Spacecraft System Integration and Test: SSTI Lewis critical design audit
NASA Technical Reports Server (NTRS)
Brooks, R. P.; Cha, K. K.
1995-01-01
The Critical Design Audit package is the final detailed design package which provides a comprehensive description of the SSTI mission. This package includes the program overview, the system requirements, the science and applications activities, the ground segment development, the assembly, integration and test description, the payload and technology demonstrations, and the spacecraft bus subsystems. Publication and presentation of this document marks the final requirements and design freeze for SSTI.
NASA Technical Reports Server (NTRS)
1976-01-01
The following areas related to the final definition and preliminary design study of the initial atmospheric cloud physics laboratory (ACPL) were covered: (1) proposal organization, personnel, schedule, and project management, (2) proposed configurations, (3) study objectives, (4) ACPL experiment program listing and description, (5) mission/flight flexibility and modularity/commonality, (6) study plan, and (7) description of following tasks: requirement analysis and definition task flow, systems analysis and trade studies, subsystem analysis and trade studies, specifications and interface control documents, preliminary design task flow, work breakdown structure, programmatic analysis and planning, and project costs. Finally, an overview of the scientific requirements was presented.
DOT National Transportation Integrated Search
2013-05-01
This Final Architecture and Design report has been prepared to describe the structure and design of all the system components for the LA-Gateway FRATIS Demonstration Project. More specifically, this document provides: Detailed descriptions of the...
Automatic control system generation for robot design validation
NASA Technical Reports Server (NTRS)
Bacon, James A. (Inventor); English, James D. (Inventor)
2012-01-01
The specification and drawings present a new method, system and software product for and apparatus for generating a robotic validation system for a robot design. The robotic validation system for the robot design of a robotic system is automatically generated by converting a robot design into a generic robotic description using a predetermined format, then generating a control system from the generic robotic description and finally updating robot design parameters of the robotic system with an analysis tool using both the generic robot description and the control system.
NASA Technical Reports Server (NTRS)
1975-01-01
A detailed description of a video system for controlling space shuttle payloads and experiments is presented in the preliminary design review and critical design review, first and second engineering design reports respectively, and in the final report submitted jointly with the design package. The material contained in the four subsequent sections of the package contains system descriptions, design data, and specifications for the recommended 2-view system. Section 2 contains diagrams relating to the simulation test configuration of the 2-view system. Section 3 contains descriptions and drawings of the deliverable breadboard equipment. A description of the recommended system is contained in Section 4 with equipment specifications in Section 5.
Natural Channel Design Review Checklist
This document presents a brief description of the checklist items by the following sections: Watershed and Geomorphic Assessment, Preliminary Design, Final Design, and Maintenance and Monitoring Plans.
Computer-Aided Authoring of Programmed Instruction for Teaching Symbol Recognition. Final Report.
ERIC Educational Resources Information Center
Braby, Richard; And Others
This description of AUTHOR, a computer program for the automated authoring of programmed texts designed to teach symbol recognition, includes discussions of the learning strategies incorporated in the design of the instructional materials, hardware description and the algorithm for the software, and current and future developments. Appendices…
The 30/20 GHz flight experiment system, phase 2. Volume 2: Experiment system description
NASA Technical Reports Server (NTRS)
Bronstein, L.; Kawamoto, Y.; Ribarich, J. J.; Scope, J. R.; Forman, B. J.; Bergman, S. G.; Reisenfeld, S.
1981-01-01
A detailed technical description of the 30/20 GHz flight experiment system is presented. The overall communication system is described with performance analyses, communication operations, and experiment plans. Hardware descriptions of the payload are given with the tradeoff studies that led to the final design. The spacecraft bus which carries the payload is discussed and its interface with the launch vehicle system is described. Finally, the hardwares and the operations of the terrestrial segment are presented.
NASA Technical Reports Server (NTRS)
1984-01-01
The design, development and analysis of the 7.3 MW MOD-5A wind turbine generator is documented. Volume 3, book 1 describes the performance and characteristics of the MOD-5A wind turbine generator in its final configuration. Each subsystem - the rotor, drivetrain, nacelle, tower and foundation is described in detail.
NASA Technical Reports Server (NTRS)
1991-01-01
This document presents the solar electric propulsion (SEP) concept design developed as part of the Space Transfer Concepts and Analysis for Exploration Missions (STCAEM) study. The evolution of the SEP concept is described along with the requirements, guidelines and assumptions for the design. Operating modes and options are defined and a systems description of the vehicle is presented. Artificial gravity configuration options and space and ground support systems are discussed. Finally, an implementation plan is presented which addresses technology needs, schedules, facilities, and costs.
NASA Technical Reports Server (NTRS)
1991-01-01
The cryogenic/aerobrake (CAB) and the cryogenic all-propulsive (CAP) concept designs developed in support of the Space Transfer Concepts and Analysis for Exploration Missions (STCAEM) study are presented. The evolution of the CAB and CAP concepts is described along with the requirements, guidelines and assumptions for the designs. Operating modes and options are defined and systems descriptions of the vehicles are presented. Artificial gravity configuration options and space and ground support systems are discussed. Finally, an implementation plan is presented which addresses technology needs, schedules, facilities, and costs.
NASA Technical Reports Server (NTRS)
1991-01-01
The nuclear electric propulsion (NEP) concept design developed in support of the Space Transfer Concepts and Analysis for Exploration Missions (STCAEM) study is presented. The evolution of the NEP concept is described along with the requirements, guidelines, and assumptions for the design. Operating modes and options are defined and a systems description of the vehicle is presented. Artificial gravity configuration options and space and ground support systems are discussed. Finally, an implementation plan is presented which addresses technology needs, schedules, facilities and costs.
NASA Technical Reports Server (NTRS)
1991-01-01
This document presents the nuclear thermal rocket (NTR) concept design developed in support of the Space Transfer Concepts and Analysis for Exploration Missions (STCAEM) study. The evolution of the NTR concept is described along with the requirements, guidelines and assumptions for the design. Operating modes and options are defined and a systems description of the vehicle is presented. Artificial gravity configuration options and space and ground support systems are discussed. Finally, an implementation plan is presented which addresses technology needs, schedules, facilities and costs.
77 FR 66471 - Methodology for Designation of Frontier and Remote Areas
Federal Register 2010, 2011, 2012, 2013, 2014
2012-11-05
... the use of a shorter, more intuitively appealing descriptive label in research publications and other...) Selection of final methodological approach; and (8) Analyses using final methodology on 2000 data. All the...
Shuttle payload S-band communications system
NASA Technical Reports Server (NTRS)
Batson, B. H.; Teasdale, W. E.; Pawlowski, J. F.; Schmidt, O. L.
1985-01-01
The Shuttle payload S-band communications system design, operational capabilities, and performance are described in detail. System design requirements, overall system and configuration and operation, and laboratory/flight test results are presented. Payload communications requirements development is discussed in terms of evolvement of requirements as well as the resulting technical challenges encountered in meeting the initial requirements. Initial design approaches are described along with cost-saving initiatives that subsequently had to be made. The resulting system implementation that was finally adopted is presented along with a functional description of the system operation. A description of system test results, problems encountered, how the problems were solved, and the system flight experience to date is presented. Finally, a summary of the advancements made and the lessons learned is discussed.
NASA Technical Reports Server (NTRS)
Clausen, O. W.
1976-01-01
Systems design for an initial atmospheric cloud physics laboratory to study microphysical processes in zero gravity is presented. Included are descriptions of the fluid, thermal, mechanical, control and data, and electrical distribution interfaces with Spacelab. Schedule and cost analysis are discussed.
Final system instrumentation design package for Decade 80 solar house
NASA Technical Reports Server (NTRS)
1978-01-01
The final configuration of the Decade 80 solar house to monitor and collect system performance data is presented. A review demonstrated by actual operation that the system and the data acquisition subsystem operated satisfactorily and installation of instrumentation was in accordance with the design. This design package is made up of (1) site and system description, (2) operating and control modes, and (3) instrumentation program (including sensor schematic).
76 FR 10269 - AP1000 Design Certification Amendment
Federal Register 2010, 2011, 2012, 2013, 2014
2011-02-24
... design control document proposals. For the final rule, the NRC will complete the review of the CIs and... control requirement includes the descriptions of the design features and functional capabilities... objective of the change controls is to determine whether the design of the facility, as changed or modified...
Inertial Fusion Energy reactor design studies: Prometheus-L, Prometheus-H. Volume 2, Final report
DOE Office of Scientific and Technical Information (OSTI.GOV)
Waganer, L.M.; Driemeyer, D.E.; Lee, V.D.
1992-03-01
This report contains a review of design studies for Inertial Confinement reactor. This second of three volumes discussions is some detail the following: Objectives, requirements, and assumptions; rationale for design option selection; key technical issues and R&D requirements; and conceptual design selection and description.
Developing a Methodology for Designing Systems of Instruction.
ERIC Educational Resources Information Center
Carpenter, Polly
This report presents a description of a process for instructional system design, identification of the steps in the design process, and determination of their sequence and interrelationships. As currently envisioned, several interrelated steps must be taken, five of which provide the inputs to the final design process. There are analysis of…
NASA Technical Reports Server (NTRS)
1973-01-01
Configuration data and design information for the space shuttle launched configuration is presented. The overall system definition, operations and control, and telecommunication service system including link budgets are discussed. A brief description of the user transceiver and ground station is presented. A final section includes a summary description of the TDR spacecraft and all the subsystems. The data presented are largely in tabular form.
DEVELOPMENT OF A SYSTEM FOR AN EDUCATIONAL PRODUCTS INFORMATION EXCHANGE. FINAL REPORT.
ERIC Educational Resources Information Center
KOMOSKI, P. KENNETH
THIS STUDY WAS UNDERTAKEN TO DESIGN AN EASILY ACCESSIBLE NATIONWIDE SYSTEM FOR EXCHANGING DESCRIPTIVE, EVALUATIVE PRODUCT INFORMATION AMONG ALL SECTORS OF THE EDUCATIONAL COMMUNITY ON A COOPERATIVE COST-SHARING BASIS. THE FEASIBILITY OF SUCH A COLLECTION AND EXCHANGE OF DESCRIPTIVE AND EVALUATIVE INFORMATION ABOUT INSTRUCTIONAL MATERIALS SYSTEMS…
Mod-1 wind turbine generator analysis and design report, volume 1
NASA Technical Reports Server (NTRS)
1979-01-01
The activities leading to the completion of detail design of the MOD-1 wind turbine generator are described. Emphasis is placed on the description of the design as it finally evolved. However, the steps through which the design progressed are also traced in order to understand the major design decisions.
DOT National Transportation Integrated Search
2013-07-01
This Final Architecture and Design report has been prepared to describe the structure and design of all the system components for the South Florida FRATIS Demonstration Project. More specifically, this document provides: Detailed descriptions of ...
NASA Technical Reports Server (NTRS)
1984-01-01
The design, development and analysis of the 7.3MW MOD-5A wind turbine generator is documented. The report is divided into four volumes: Volume 1 summarizes the entire MOD-5A program, Volume 2 discusses the conceptual and preliminary design phases, Volume 3 describes the final design of the MOD-5A, and Volume 4 contains the drawings and specifications developed for the final design. Volume 3, book 2 describes the performance and characteristics of the MOD-5A wind turbine generator in its final configuration. The subsystem for power generation, control, and instrumentation subsystems is described in detail. The manufacturing and construction plans, and the preparation of a potential site on Oahu, Hawaii, are documented. The quality assurance and safety plan, and analyses of failure modes and effects, and reliability, availability and maintainability are presented.
23 CFR Appendix A to Part 1340 - Sample Design
Code of Federal Regulations, 2011 CFR
2011-04-01
... 23 Highways 1 2011-04-01 2011-04-01 false Sample Design A Appendix A to Part 1340 Highways... OBSERVATIONAL SURVEYS OF SEAT BELT USE Pt. 1340, App. A Appendix A to Part 1340—Sample Design Following is a description of a sample design that meets the final survey guidelines and, based upon NHTSA's experience in...
23 CFR Appendix A to Part 1340 - Sample Design
Code of Federal Regulations, 2010 CFR
2010-04-01
... OBSERVATIONAL SURVEYS OF SEAT BELT USE Pt. 1340, App. A Appendix A to Part 1340—Sample Design Following is a description of a sample design that meets the final survey guidelines and, based upon NHTSA's experience in.... This information is intended only as an example of a complying survey design and to provide guidance...
Guidance, navigation, and control subsystem for the EOS-AM spacecraft
NASA Technical Reports Server (NTRS)
Linder, David M.; Tolek, Joseph T.; Lombardo, John
1992-01-01
This paper presents the preliminary design of the Guidance, Navigation, and Control (GN&C) subsystem for the EOS-AM spacecraft and specifically focuses on the GN&C Normal Mode design. First, a brief description of the EOS-AM science mission, instruments, and system-level spacecraft design is provided. Next, an overview of the GN&C subsystem functional and performance requirements, hardware, and operating modes is presented. Then, the GN&C Normal Mode attitude determination, attitude control, and navigation systems are detailed. Finally, descriptions of the spacecraft's overall jitter performance and Safe Mode are provided.
Development of a Graduate Course in Computer-Aided Geometric Design.
ERIC Educational Resources Information Center
Ault, Holly K.
1991-01-01
Described is a course that focuses on theory and techniques for ideation and refinement of geometric models used in mechanical engineering design applications. The course objectives, course outline, a description of the facilities, sample exercises, and a discussion of final projects are included. (KR)
NASA Technical Reports Server (NTRS)
1973-01-01
Configuration data and design information for a Delta 2914 launched configuration with greatly enhanced telecommunication service over the Part I Delta 2914 configuration is contained. The overall system definition, operations and control, and telecommunication service system, including link budgets are discussed. A brief description of the user transceiver and ground station is presented. A final section includes a summary description of the TDR spacecraft and all the subsystems. The data presented are largely in tabular form.
DOT National Transportation Integrated Search
2017-02-14
This project report provides a descriptive overview of the architecture and design of wireless underground radio frequency smart sensors, data collection and Internet of Things (IOT) [8] transmission system and an SLR decision support system. The roa...
A Talking Computers System for Persons with Vision and Speech Handicaps. Final Report.
ERIC Educational Resources Information Center
Visek & Maggs, Urbana, IL.
This final report contains a detailed description of six software systems designed to assist individuals with blindness and/or speech disorders in using inexpensive, off-the-shelf computers rather than expensive custom-made devices. The developed software is not written in the native machine language of any particular brand of computer, but in the…
Federal Register 2010, 2011, 2012, 2013, 2014
2012-08-23
... export of goods and services for the design and construction of an aquarium. Brief non-proprietary... industry. Parties: Principal Supplier: International Concept Management. Obligor: State of Cear[aacute... Planning, Budget and Management. Description of Items Being Exported: Design, engineering and construction...
ERIC Educational Resources Information Center
Southern Univ. and Agricultural and Mechanical Coll., Baton Rouge, LA.
This final report of the third year of the Southern University-Tulane University Regional Head Start Evaluation and Research Center is a statement of activities engaged in since September 1968. Chapter I includes an introduction and description of the centers; Chapter II, evaluation guidelines, test battery, quality control, evaluation design and…
NASA Technical Reports Server (NTRS)
1973-01-01
Design and development efforts for a spaceborne modular computer system are reported. An initial baseline description is followed by an interface design that includes definition of the overall system response to all classes of failure. Final versions for the register level designs for all module types were completed. Packaging, support and control executive software, including memory utilization estimates and design verification plan, were formalized to insure a soundly integrated design of the digital computer system.
Visualization design and verification of Ada tasking using timing diagrams
NASA Technical Reports Server (NTRS)
Vidale, R. F.; Szulewski, P. A.; Weiss, J. B.
1986-01-01
The use of timing diagrams is recommended in the design and testing of multi-task Ada programs. By displaying the task states vs. time, timing diagrams can portray the simultaneous threads of data flow and control which characterize tasking programs. This description of the system's dynamic behavior from conception to testing is a necessary adjunct to other graphical techniques, such as structure charts, which essentially give a static view of the system. A series of steps is recommended which incorporates timing diagrams into the design process. Finally, a description is provided of a prototype Ada Execution Analyzer (AEA) which automates the production of timing diagrams from VAX/Ada debugger output.
Preliminary design report: Babcock and Wilcox BR-100 100-ton rail/barge spent fuel shipping cask
DOE Office of Scientific and Technical Information (OSTI.GOV)
None
1990-02-01
The purpose of this document is to provide information on burnup credit as applied to the preliminary design of the BR-100 shipping cask. There is a brief description of the preliminary basket design and the features used to maintain a critically safe system. Following the basket description is a discussion of various criticality analyses used to evaluate burnup credit. The results from these analyses are then reviewed in the perspective of fuel burnups expected to be shipped to either the final repository or a Monitored Retrievable Storage (MRS) facility. The hurdles to employing burnup credit in the certification of anymore » cask are then outlines and reviewed. the last section gives conclusions reached as to burnup credit for the BR-100 cask, based on our analyses and experience. All information in this study refers to the cask configured to transport PWR fuel. Boiling Water Reactor (BWR) fuel satisfies the criticality requirements so that burnup credit is not needed. All calculations generated in the preparation of this report were based upon the preliminary design which will be optimized during the final design. 8 refs., 19 figs., 16 tabs.« less
DOE Office of Scientific and Technical Information (OSTI.GOV)
None,
1979-01-01
This volume documents the preliminary design developed for the Solar Total Energy System to be installed at Fort Hood, Texas. Current system, subsystem, and component designs are described and additional studies which support selection among significant design alternatives are presented. Overall system requirements which form the system design basis are presented. These include program objectives; performance and output load requirements; industrial, statutory, and regulatory standards; and site interface requirements. Material in this section will continue to be issued separately in the Systems Requirements Document and maintained current through revision throughout future phases of the project. Overall system design and detailedmore » subsystem design descriptions are provided. Consideration of operation and maintenance is reflected in discussion of each subsystem design as well as in an integrated overall discussion. Included are the solar collector subsystem; the thermal storage subsystem, the power conversion sybsystem (including electrical generation and distribution); the heating/cooling and domestic hot water subsystems; overall instrumentation and control; and the STES building and physical plant. The design of several subsystems has progressed beyond the preliminary stage; descriptions for such subsystems are therefore provided in more detail than others to provide complete documentation of the work performed. In some cases, preliminary design parameters require specific verificaton in the definitive design phase and are identified in the text. Subsystem descriptions will continue to be issued and revised separately to maintain accuracy during future phases of the project. (WHK)« less
El Toro Library Solar Heating and Cooling Demonstration Project. Final report
DOE Office of Scientific and Technical Information (OSTI.GOV)
Not Available
This report is divided into a number of essentially independent sections, each of which covers a specific topic. The sections, and the topics covered, are as follows. Section 1 provides a brief summary description of the solar energy heating and cooling system including the key final design parameters. Section 2 contains a copy of the final Acceptance Test Report. Section 3 consists of a reduced set of final updated as-built mechanical, electrical, control and instrumentations drawings of the solar energy heating and cooling system. Section 4 provides a summary of system maintenance requirements, in the form of a maintenance schedulemore » which lists necessary maintenance tasks to be performed at monthly, quarterly, semi-annual, and annual intervals. Section 5 contains a series of photographs of the final solar energy system installation, including the collector field and the mechanical equipment room. Section 6 provides a concise summary of system operation and performance for the period of December 1981 through June 1982, as measured, computed and reported by Vitro Laboratories Division of Automation Industries, Inc., for the DOE National Solar Data Network. Section 7 provides a summary of key as-built design parameters, compared with the corresponding original design concept parameters. Section 8 provides a description of a series of significant problems encountered during construction, start-up and check-out of the solar energy heating and cooling system, together with the method employed to solve the problem at the time and/or recommendations for avoiding the problem in the future design of similar systems. Appendices A through H contain the installation, operation and maintenance submittals of the various manufacturers on the major items of equipment in the system. Reference CAPE-2823.« less
ERIC Educational Resources Information Center
Paulien, Daniel K.; Thibodeau, Yvonne
This document is a description of a prototype Library/Student Center designed to serve approximately 10,000 students at a comprehensive campus. Prepared by the firm Paulien & Associates, Inc., of Denver, Colorado, this prototype will serve a design basis for facilities at all Pima Community College (PCC) campuses. The prototype will not be…
Technical Assistance and Training from the Document Design Project. Final Report.
ERIC Educational Resources Information Center
American Institutes for Research, Washington, DC.
Contained in this report is a description of the technical assistance and training phase of the Document Design Project, a program funded by the National Institute of Education and intended to address and correct the readability problems posed by public documents. The first section of the report provides background material on the assistance and…
NASA Technical Reports Server (NTRS)
Bozajian, J. M.
1973-01-01
The requirements, trades, and design descriptions for the probe bus and orbiter spacecraft configurations, structure, thermal control, and harness are defined. Designs are developed for Thor/Delta and Atlas/Centaur launch vehicles with the latter selected as the final baseline. The major issues examined in achieving the baseline design are tabulated. The importance of spin axis orientation because of the effect on science experiments and earth communications is stressed.
NASA Technical Reports Server (NTRS)
1972-01-01
A reference handbook of configuration data and design information is presented. It treats the overall system definition, operations and control, and telecommunication service system including link budgets. A brief description of the user transceiver and ground station is presented. A final section includes a summary description of the TDR spacecraft and all the subsystems. The data presented are largely in tabular form for easy reference.
Design Evaluation for Personnel, Training and Human Factors (DEPTH) Final Report.
1998-01-17
human activity was primarily intended to facilitate man-machine design analyses of complex systems. By importing computer aided design (CAD) data, the human figure models and analysis algorithms can help to ensure components can be seen, reached, lifted and removed by most maintainers. These simulations are also useful for logistics data capture, training, and task analysis. DEPTH was also found to be useful in obtaining task descriptions for technical
A robotic exploration mission to Mars and Phobos
NASA Technical Reports Server (NTRS)
Kerr, Justin H.; Defosse, Erin; Ho, Quang; Barriga, Ernisto; Davis, Grant; Mccourt, Steve; Smith, Matt
1993-01-01
This report discusses the design of a robotic exploration to Mars and Phobos. It begins with the mission's background and objectives, followed by a detailed explanation of various elements of Project Aeneas, including science, spacecraft, probes, and orbital trajectories. In addition, a description of Argos Space Endeavours, management procedures, and overall project costs are presented. Finally, a list of recommendations for future design activity is included.
ERIC Educational Resources Information Center
Wheeler, Patricia; And Others
This formative review of a project designed to help high school students become more discriminating television viewers (1) presents a description of the curriculum designed during the project to foster critical television viewing in teenagers, (2) outlines the major tasks involved in the formative review of the curriculum, and (3) presents and…
ERIC Educational Resources Information Center
Henderson, William Edward, Jr.
Developed during a project designed to provide continuous, performance-based vocational training at the secondary and postsecondary levels, this instructional guide is intended to help teachers implement a laterally and vertically articulated secondary level automotive mechanics program. Introductory materials include descriptions of Automotive…
ERIC Educational Resources Information Center
Vinton, Dennis A.; Zachmeyer, Richard F.
This final report presents a description of a 3-year project to develop and implement a model training program (for special education personnel, park and resource management personnel, and parents of disabled children) designed to promote outdoor environmental education for disabled children. The project conducted 22 training workshops (2-5 days)…
NASA Technical Reports Server (NTRS)
1984-01-01
The design, development and analysis of the 7.3 MW MOD-5A wind turbine generator is documented. There are four volumes. In Volume 2, book 1 the requirements and criteria for the design are presented. The conceptual design studies, which defined a baseline configuration and determined the weights, costs and sizes of each subsystem, are described. The development and optimization of the wind turbine generator are presented through the description of the ten intermediate configurations between the conceptual and final designs. Analyses of the system's load and dynamics are presented.
A methodology for designing aircraft to low sonic boom constraints
NASA Technical Reports Server (NTRS)
Mack, Robert J.; Needleman, Kathy E.
1991-01-01
A method for designing conceptual supersonic cruise aircraft to meet low sonic boom requirements is outlined and described. The aircraft design is guided through a systematic evolution from initial three view drawing to a final numerical model description, while the designer using the method controls the integration of low sonic boom, high supersonic aerodynamic efficiency, adequate low speed handling, and reasonable structure and materials technologies. Some experience in preliminary aircraft design and in the use of various analytical and numerical codes is required for integrating the volume and lift requirements throughout the design process.
Articulated, Performance-Based Instruction Guide for Drafting II. Final Document. Revised.
ERIC Educational Resources Information Center
Henderson, William Edward, Jr.
Developed during a project designed to provide continuous, performance-based vocational training at the secondary and postsecondary levels, this instructional guide is intended to help teachers implement a laterally and vertically articulated secondary level drafting II program. Introductory materials include a description of Drafting II,…
Articulated, Performance-Based Instruction Objectives Guide for Welding. Final Document. Revised.
ERIC Educational Resources Information Center
Henderson, William Edward, Jr.
Developed during a project designed to provide continuous, performance-based vocational training at the secondary and postsecondary levels, this instructional guide is intended to help teachers implement a laterally and vertically articulated secondary level welding program. Introductory materials include descriptions of Welding I and II,…
ERIC Educational Resources Information Center
Henderson, William Edward, Jr.
Developed during a project designed to provide continuous, performance-based vocational training at the secondary and postsecondary levels, this instructional guide is intended to help teachers implement a laterally and vertically articulated secondary level building construction/carpentry program. Introductory materials include descriptions of…
Federal Register 2010, 2011, 2012, 2013, 2014
2011-10-28
... agency, and requirements to enhance descriptive materials distributed to families. This rule finalizes... design. The rule added language reflecting the statutory requirement that any communication with... in student households through the Home Language Survey. FNS will promote providing NSLP application...
NASA Technical Reports Server (NTRS)
Dominick, Wayne D. (Editor); Hall, Philip P.
1985-01-01
This Working Paper Series entry represents a collection of presentation visuals associated with the companion report entitled, The Design of PC/MISI, a PC-Based Common User Interface to Remote Information Storage and Retrieval Systems, USL/DBMS NASA/RECON Working Paper Series report number DBMS.NASA/RECON-15. The paper discusses the following: problem definition; the PC solution; the goals of system design; the design description; future considerations, the research environment; conclusions.
NASA Technical Reports Server (NTRS)
1973-01-01
Configuration data and design information for the Atlas Centaur launched configuration are presented. Overall system definition, operations and control, and telecommunication service system, including link budgets, are discussed. A brief description of the user telecommunications equipment and ground station is presented. A summary description of the TDR spacecraft and all the subsystems is included. The data presented are largely in tabular form. A brief treatment of an optional configuration with enhanced telecommunications service is described.
Cockpit Automation Technology CSERIAC-CAT
1991-06-01
AD-A273 124 AL-TR-1991-0078 A R COCKPIT AUTOMATION TECHNOLOGY M CSERIAC- CAT S JULY 1989 - DEC 1990: FINAL REPORT T R Trudy S. Abrams Cindy D. Martin...TITLE AND SUBTITLE 5. FUNDING NUMBERS Cockpit Automation Technology CSERIAC- CAT JUL 89 - DEC 90 PE 62202F Final Report (U) PR 7184 ,___,TA 12 6. AUTHOR(S...Boeing-developed CAT software tools, and for facilitating their use by the cockpit design community. A brief description of the overall task is given
Remote measurements of upper atmospheric density and temperature
NASA Technical Reports Server (NTRS)
Yee, Jeng-Hwa
1995-01-01
A suborbital experiment was designed to study the photochemistry of the mesosphere by observing simultaneously the airglow emissions with in-situ minor species number density profiles. The experiment was very successful and some preliminary results have already been reported in various scientific meetings. Two scientific papers are currently in the process of final preparation for submission for publication. In this final project report, we will first give a background description of the experiment and follow by the summaries of the scientific papers currently being prepared.
10-decade wide-range neutron-monitoring system. Final test report
DOE Office of Scientific and Technical Information (OSTI.GOV)
Green, W.K.
The objective of Project Agreement 49 was to design, fabricate, test, and evaluate under actual nuclear reactor operating conditions, one prototype counting-Campbelling wide-range type thermal neutron flux measurement channel. This report describes the basic system designed for PA 49, and describes and presents the results of tests conducted on the system. Individual module descriptions and schematics are contained in the instruction manual which was issued with the system.
Articulated Instruction Objectives Guide for Drafting. Final Document for Articulation of Drafting.
ERIC Educational Resources Information Center
Henderson, Wm. Edward, Jr.
Intended for use in competency-based and criterion-referenced vocational programs, this articulated, performance-based instruction objectives guide for Drafting I is designed for reference use in the articulation of drafting programs at the secondary and postsecondary levels. It consists of a description of the development of the guide, 14…
Local/State Bilingual Project. 1981-82 Final Technical Report. Appendixes.
ERIC Educational Resources Information Center
Austin Independent School District, TX. Office of Research and Evaluation.
The 1981-82 Local/State Bilingual Program Technical Report addresses the evaluation questions of the Local/State Bilingual Program Evaluation Design. It is organized into six appendixes. Each appendix reports the information collected by a specific measure. Each appendix consists of (1) an instrument description, (2) purpose of the measure, (3)…
Final evaluation of the acoustics of the APS conference center
DOE Office of Scientific and Technical Information (OSTI.GOV)
Restrepo, J.M.
Along with a description of the changes that I prescribed on the original design, this report is an evaluation of the acoustical properties of the new Advanced Photon Source Auditorium at Argonne National Laboratory. Acoustical deficiencies in the hall are presented with several options for their expedient and economical solution.
Inferencing by Children from Connected Discourse. Final Report.
ERIC Educational Resources Information Center
Trabasso, Tom
This report contains brief descriptions of 37 published and unpublished works and ongoing studies produced by a project designed to investigate the ways in which both children and adults comprehend and remember connected discourse. Among the topics of the published works, which include articles, book chapters, and a book, are the following: story…
Trends in OMR Techniques and Equipment.
ERIC Educational Resources Information Center
Ward, Obie; Poulos, Cynthia
Various aspects of the Optical Mark Reader (OMR) used by the Atlanta Public School System are discussed. First considered are the required features of the OMR scanner. Following this, methods of motivating users to record data accurately are described. Finally, a description of how forms are designed for the convenience of users is provided. (PB)
NASA Astrophysics Data System (ADS)
Borriello, G.; Bonori, V.; Cresti, M.; Dente, E.; Ideo, L.; Mazzi, G.; Usai, A.; Tafuto, A.; Togna, F.
2014-10-01
In this paper authors provide a description of the currently deployed Man Portable Air Defense System (ManPADS) heat-seeking missiles. Principles of IR seeking and Aircraft signatures are shortly described. Basic information are listed on currently designed Infra-Red Counter Measure Systems, intended to protect Aircrafts against ManPADS. Authors provide an overview on ELT-572(v)2 DIRCM Program, funded by Italian Air Force, currently in low rate production phase. Description of the Design and Development phase, completed in Elettronica SpA in 2013, is reported. Development Test and Evaluation (DTE) Activities on ELT-572(v)2 DIRCM, jointly performed by Elettronica Spa and Italian Air Force Flight Test Centre, are shortly described. A summary of tests and some results are also discussed. Platform Installation Programs, using the low rate production units from ELT-572(v)2 DIRCM Program, are finally listed.
Fundamental neutron physics beamline at the spallation neutron source at ORNL
Fomin, N.; Greene, G. L.; Allen, R. R.; ...
2014-11-04
In this paper, we describe the Fundamental Neutron Physics Beamline (FnPB) facility located at the Spallation Neutron Source at Oak Ridge National Laboratory. The FnPB was designed for the conduct of experiments that investigate scientific issues in nuclear physics, particle physics, astrophysics and cosmology using a pulsed slow neutron beam. Finally, we present a detailed description of the design philosophy, beamline components, and measured fluxes of the polychromatic and monochromatic beams.
Statistical complex fatigue data for SAE 4340 steel and its use in design by reliability
NASA Technical Reports Server (NTRS)
Kececioglu, D.; Smith, J. L.
1970-01-01
A brief description of the complex fatigue machines used in the test program is presented. The data generated from these machines are given and discussed. Two methods of obtaining strength distributions from the data are also discussed. Then follows a discussion of the construction of statistical fatigue diagrams and their use in designing by reliability. Finally, some of the problems encountered in the test equipment and a corrective modification are presented.
FINAL SAFETY ANALYSIS REPORT--SNAP 1A RADIOISOTOPE FUELED THERMOELECTRIC GENERATOR
DOE Office of Scientific and Technical Information (OSTI.GOV)
Dix, G.P.
1960-06-30
The safety aspects involved in utilizing the Task 2 radioisotope-powered thermoelectric generator in a terrestrial satellite are described. It is based upon a generalized satellite mission having a 600-day orbital lifetime. A description of the basic design of the generator is presented in order to establish the analytical model. This includes the generator design, radiocerium fuel properties, and the fuel core. The transport of the generator to the launch site is examined, including the shipping cask, shipping procedures, and shipping hazards. A description of ground handling and vehicle integration is presented including preparation for fuel transfer, transfer, mating of generatorsmore » to final stage, mating final stage to booster, and auxiliary support equipment. The flight vehicle is presented to complete the analytical model. Contained in this chapter are descriptions of the booster-sustainer, final stage, propellants, and built-in safety systems. The typical missile range is examined with respect to the launch complex and range safety characteristics. The shielding of the fuel is discussed and includes both dose rates and shield thicknesses required. The bare core, shielded generator, fuel transfer operation and dose rates for accidental conditions are treated. mechanism of re-entry from the successful mission is covered. Radiocerium inventories with respect to time and the chronology of re-entry are specifically treated. The multiplicity of conditions for aborted missions is set forth. The definition of aborted missions is treated first in order to present the initial conditions. Following this, a definition of the forces imposed upon the generator is presented. The aborted missions is presented. A large number of initial vehicle failure cases is narrowed down into categories of consequences. Since stratospheric injection of fuel results in cases where the fuel is not contained after re-entry, an extensive discussion of the fall-out mechanism is presented. (auth)« less
Preliminary design report for OTEC stationkeeping subsystems (SKSS)
DOE Office of Scientific and Technical Information (OSTI.GOV)
Not Available
1979-12-12
Lockheed Ocean Systems with IMODCO prepared these preliminary designs for OTEC Stationkeeping Subsystems (SKSS) under contract to NOAA in support of the Department of Energy OTEC program. The results of Tasks III, V, and VI are presented in this design report. The report consists of five sections: introduction, preliminary designs for the multiple anchor leg (MAL) and tension anchor leg (TAL), costs and schedule, and conclusions. Extensive appendixes provide detailed descriptions of design methodology and include backup calculations and data to support the results presented. The objective of this effort is to complete the preliminary designs for the barge-MAL andmore » Spar-TAL SKSS. A set of drawings is provided for each which show arrangements, configuration, component details, engineering description, and deployment plan. Loads analysis, performance assessment, and sensitivity to requirements are presented, together with the methodology employed to analyze the systems and to derive the results presented. Life cycle costs and schedule are prepared and compared on a common basis. Finally, recommendations for the Commercial Plant SKSS are presented for both platform types.« less
Design Protocols and Analytical Strategies that Incorporate Structural Reliability Models
NASA Technical Reports Server (NTRS)
Duffy, Stephen F.
1995-01-01
The general goal of this project is to establish design protocols that enable the engineer to analyze and predict certain types of behavior in ceramic composites. Sections of the final report addresses the following: Description of the Problem that Motivated the Technology Development, Description of the New Technology that was Developed, Unique and Novel Features of the Technology and Results/Benefits of Application (year by year accomplishments), and Utilization of New Technology in Non-Aerospace Applications. Activities for this reporting period included the development of a design analysis as part of a cooperative agreement with general Electric Aircraft Engines. The effort focused on modifying the Toughened Ceramics Analysis and Reliability Evaluation of Structures (TCARES) algorithm for use in the design of engine components fabricated from NiAl. Other activities related to the development of an ASTM standard practice for estimating Weibull parameters. The standard focuses on the evaluation and reporting of uniaxial strength data, and the estimation of probability distribution parameters for ceramics which fail in a brittle fashion.
Federal Register 2010, 2011, 2012, 2013, 2014
2013-09-13
... DEPARTMENT OF AGRICULTURE Forest Service Boundary Description and Final Map for Roaring Wild and... availability. SUMMARY: In accordance with section 3(b) of the Wild and Scenic Rivers Act, the USDA Forest Service, Washington Office, is transmitting the final boundary description and map of the Roaring Wild and...
ERIC Educational Resources Information Center
Hayati, Noor
2015-01-01
This research aimed to investigate; students' English academic achievement, beliefs about English language learning, English language learning strategies, and the relationship of them. Descriptive and correlational design, quantitative methods were applied in this research. The students' final English scores of the first year, BALLI, and SILL were…
ERIC Educational Resources Information Center
Holton, Gerald; And Others
Detailed descriptions about Project Physics are presented in this report covering the period from July 1, 1964 - August 15, 1970. The objectives of designing a humanistically-oriented course, attracting more senior-high students, and contributing to the advancement of knowledge of the factors influencing physics learning are discussed with a…
Evaluation of a College Curriculum Advisory Program Utilizing Student Advisors. Final Report.
ERIC Educational Resources Information Center
Brown, Coke R.
This study was designed to evaluate the viability of using students as academic advisors for freshmen students and to document the process of the advising program at Idaho State University. Results show that students advised by students did as well academically and had a lower dropout rate than students advised by faculty. Descriptions of advisor…
ERIC Educational Resources Information Center
Carter, Keith A.; And Others
Project 2142 was a multi-phase effort to discover and mobilize for dissemination to rural decision-makers various information and findings pertaining to the quality of life experienced by rural people. The initial research phases involved design of a conceptual framework that placed some parameters on the variety of social phenomena studied.…
EZLP: An Interactive Computer Program for Solving Linear Programming Problems. Final Report.
ERIC Educational Resources Information Center
Jarvis, John J.; And Others
Designed for student use in solving linear programming problems, the interactive computer program described (EZLP) permits the student to input the linear programming model in exactly the same manner in which it would be written on paper. This report includes a brief review of the development of EZLP; narrative descriptions of program features,…
NASA Technical Reports Server (NTRS)
Cook, Jerry D.; Zhou, Shiliang
1993-01-01
The purpose of this work is to extend resonator theory into the region in which the planar mirror is quite small. Results of the theoretical description are then extended to resonator design and experimental arrangements as discussed in further sections of this work. Finally, a discussion of dielectric measurements for small samples is included as a specific application of this work.
ERIC Educational Resources Information Center
Hughes, John; And Others
This report provides a description of a Computer Aided Training System Development and Management (CATSDM) environment based on state-of-the-art hardware and software technology, and including recommendations for off the shelf systems to be utilized as a starting point in addressing the particular systematic training and instruction design and…
The Nature-Computer Camp. Final Evaluation Report, 1982-1983. E.C.I.A. Chapter 2.
ERIC Educational Resources Information Center
District of Columbia Public Schools, Washington, DC. Div. of Quality Assurance.
This report presents a description and evaluation of the Nature-Computer Camp (NCC), an environmental and computer science program designed for sixth grade students in the District of Columbia public schools. Among the major components of the program were: planning for administration of operating the camp and for instruction in environmental…
The Nature-Computer Camp. Final Evaluation Report, 1984-1985. E.C.I.A. Chapter 2.
ERIC Educational Resources Information Center
District of Columbia Public Schools, Washington, DC. Div. of Quality Assurance.
This report presents a description and evaluation of the Nature-Computer Camp (NCC), an environmental and computer science program designed for sixth grade students in the District of Columbia public schools. Inputs, processes and outcomes based on a Planning, Monitoring and Implementing (PMI) Evaluation Model are reviewed for each of the four…
Nature-Computer Camp. Final Evaluation Report 1984-1985. E.C.I.A. Chapter 2.
ERIC Educational Resources Information Center
District of Columbia Public Schools, Washington, DC. Div. of Quality Assurance.
This report presents a description and evaluation of the Nature-Computer Camp (NCC), a science- and technology-oriented program for sixth-grade students from the District of Columbia Public Schools. The NCC experience is designed to offer students opportunities in such environmentally-related areas as woodland ecology, stream ecology, geology, as…
Nature-Computer Camp. Final Evaluation Report. E.C.I.A. Chapter 2.
ERIC Educational Resources Information Center
District of Columbia Public Schools, Washington, DC. Div. of Quality Assurance.
This report presents a description and evaluation of the Nature-Computer Camp (NCC), an environmental and computer science program designed for sixth grade students in the District of Columbia public schools. Inputs, processes and outcomes based on a Planning, Monitoring and Implementing (PMI) Evaluation Model are reviewed for each of the four…
School-Based Job Placement Service Model: Phase I, Planning. Final Report.
ERIC Educational Resources Information Center
Gingerich, Garland E.
To assist school administrators and guidance personnel in providing job placement services, a study was conducted to: (1) develop a model design for a school-based job placement system, (2) identify students to be served by the model, (3) list specific services provided to students, and (4) develop job descriptions for each individual responsible…
A Technical Description of the Officer Procurement Model (TOPOPS). Final Report.
ERIC Educational Resources Information Center
Akman, Allan; And Others
The Total Objective Plan for the Officer Procurement System (TOPOPS) is an aggregate-level, computer-based model of the Air Force Officer procurement system developed to operate on the UNIVAC 1108 system. It is designed to simulate officer accession and training and achieve optimal solutions in terms of either cost minimization or accession…
Development of a Self-Instructional Course in Engineering Statics. Final Report.
ERIC Educational Resources Information Center
Alexander, Daniel E.
Reported is the development of a self-instructional course in engineering statics designed for engineering students that has been implemented in several institutions. There are 15 unit modules in the course divided into three different levels. Each unit begins with a description of general objectives. The unit is then divided into several subunits…
Acoustics in Halls for Speech and Music
NASA Astrophysics Data System (ADS)
Gade, Anders C.
This chapter deals specifically with concepts, tools, and architectural variables of importance when designing auditoria for speech and music. The focus will be on cultivating the useful components of the sound in the room rather than on avoiding noise from outside or from installations, which is dealt with in Chap. 11. The chapter starts by presenting the subjective aspects of the room acoustic experience according to consensus at the time of writing. Then follows a description of their objective counterparts, the objective room acoustic parameters, among which the classical reverberation time measure is only one of many, but still of fundamental value. After explanations on how these parameters can be measured and predicted during the design phase, the remainder of the chapter deals with how the acoustic properties can be controlled by the architectural design of auditoria. This is done by presenting the influence of individual design elements as well as brief descriptions of halls designed for specific purposes, such as drama, opera, and symphonic concerts. Finally, some important aspects of loudspeaker installations in auditoria are briefly touched upon.
Mechatronic system design course for undergraduate programmes
NASA Astrophysics Data System (ADS)
Saleem, A.; Tutunji, T.; Al-Sharif, L.
2011-08-01
Technology advancement and human needs have led to integration among many engineering disciplines. Mechatronics engineering is an integrated discipline that focuses on the design and analysis of complete engineering systems. These systems include mechanical, electrical, computer and control subsystems. In this paper, the importance of teaching mechatronic system design to undergraduate engineering students is emphasised. The paper offers the collaborative experience in preparing and delivering the course material for two universities in Jordan. A detailed description of such a course is provided and a case study is presented. The case study used is a final year project, where students applied a six-stage design procedure that is described in the paper.
ERIC Educational Resources Information Center
Rigothi, Anthony, Ed.
Concept definition and activity description constituted the major focus of implementation proceedings of this outdoor education program designed for a residential school serving secondary students with emotional and drug related problems. Major program objectives were the development of greater academic growth and more positive self-concept for…
ERIC Educational Resources Information Center
Sherry, Lee
The study, involving 100 children (11 and 12 years old), was designed to generate descriptive data regarding the behavioral and psychometric characteristics of exceptional children in the public schools. A review of the literature revealed that it is difficult to make a differential diagnosis among educable mentally retarded (EMR), emotionally…
ERIC Educational Resources Information Center
Pyecha, J. N.; And Others
The Office of Education's Talent Search program is designed to: (a) identify needy youths with exceptional potential and encourage them to complete secondary school and undertake further education; (b) publicize student financial aid; and (c) encourage dropouts of demonstrated aptitude to reenter educational programs. The Talent Search program…
ERIC Educational Resources Information Center
Adkins, John; And Others
A project was designed to produce a broad description of current mining training programs and to evaluate their effectiveness with respect to reducing mine injuries. The research strategy was built on the ranking of mines according to the effectiveness of their training with an effective training effort being defined as that training which is…
Respiratory protective device design using control system techniques
NASA Technical Reports Server (NTRS)
Burgess, W. A.; Yankovich, D.
1972-01-01
The feasibility of a control system analysis approach to provide a design base for respiratory protective devices is considered. A system design approach requires that all functions and components of the system be mathematically identified in a model of the RPD. The mathematical notations describe the operation of the components as closely as possible. The individual component mathematical descriptions are then combined to describe the complete RPD. Finally, analysis of the mathematical notation by control system theory is used to derive compensating component values that force the system to operate in a stable and predictable manner.
"Who Doesn't?"--The Impact of Descriptive Norms on Corruption.
Köbis, Nils C; van Prooijen, Jan-Willem; Righetti, Francesca; Van Lange, Paul A M
2015-01-01
Corruption poses one of the major societal challenges of our time. Considerable advances have been made in understanding corruption on a macro level, yet the psychological antecedents of corrupt behavior remain largely unknown. In order to explain why some people engage in corruption while others do not, we explored the impact of descriptive social norms on corrupt behavior by using a novel behavioral measure of corruption. We conducted three studies to test whether perceived descriptive norms of corruption (i.e. the belief about the prevalence of corruption in a specific context) influence corrupt behavior. The results indicated that descriptive norms highly correlate with corrupt behavior--both when measured before (Study 1) or after (Study 2) the behavioral measure of corruption. Finally, we adopted an experimental design to investigate the causal effect of descriptive norms on corruption (Study 3). Corrupt behavior in the corruption game significantly drops when participants receive short anti-corruption descriptive norm primes prior to the game. These findings indicate that perceived descriptive norms can impact corrupt behavior and, possibly, could offer an explanation for inter-personal and inter-cultural variation in corrupt behavior in the real world. We discuss implications of these findings and draw avenues for future research.
Analysis of Feeder Bus Network Design and Scheduling Problems
Almasi, Mohammad Hadi; Karim, Mohamed Rehan
2014-01-01
A growing concern for public transit is its inability to shift passenger's mode from private to public transport. In order to overcome this problem, a more developed feeder bus network and matched schedules will play important roles. The present paper aims to review some of the studies performed on Feeder Bus Network Design and Scheduling Problem (FNDSP) based on three distinctive parts of the FNDSP setup, namely, problem description, problem characteristics, and solution approaches. The problems consist of different subproblems including data preparation, feeder bus network design, route generation, and feeder bus scheduling. Subsequently, descriptive analysis and classification of previous works are presented to highlight the main characteristics and solution methods. Finally, some of the issues and trends for future research are identified. This paper is targeted at dealing with the FNDSP to exhibit strategic and tactical goals and also contributes to the unification of the field which might be a useful complement to the few existing reviews. PMID:24526890
Beam director design report: Volume 1
DOE Office of Scientific and Technical Information (OSTI.GOV)
Younger, F.C.
1986-08-01
A design and fabrication effort for a beam director is documented. The conceptual design provides for the beam to pass first through a bending and focusing system (or ''achromat''), through a second achromat, through an air-to-vacuum interface (the ''beam window''), and finally through the vernier steering system. Following an initial concept study for a beam director, a prototype permanent magnet 30/sup 0/ beam-bending achromat and a prototype vernier steering magnet were designed and built. In volume I, the design requirements are stated, the design is summarized and illustrated, and detailed analysis and computations are provided. Also, a summary of materialsmore » used, a description of the manufacturing process, and a summary of project funding are provided. (LEW)« less
NASA Technical Reports Server (NTRS)
Magee, Todd E.; Wilcox, Peter A.; Fugal, Spencer R.; Acheson, Kurt E.; Adamson, Eric E.; Bidwell, Alicia L.; Shaw, Stephen G.
2013-01-01
This report describes the work conducted by The Boeing Company under American Recovery and Reinvestment Act (ARRA) and NASA funding to experimentally validate the conceptual design of a supersonic airliner feasible for entry into service in the 2018 to 2020 timeframe (NASA N+2 generation). The report discusses the design, analysis and development of a low-boom concept that meets aggressive sonic boom and performance goals for a cruise Mach number of 1.8. The design is achieved through integrated multidisciplinary optimization tools. The report also describes the detailed design and fabrication of both sonic boom and performance wind tunnel models of the low-boom concept. Additionally, a description of the detailed validation wind tunnel testing that was performed with the wind tunnel models is provided along with validation comparisons with pretest Computational Fluid Dynamics (CFD). Finally, the report describes the evaluation of existing NASA sonic boom pressure rail measurement instrumentation and a detailed description of new sonic boom measurement instrumentation that was constructed for the validation wind tunnel testing.
A Social Studies Curriculum for a Modern World. The Marin Social Studies Project. Final Report.
ERIC Educational Resources Information Center
Lester, G. Sidney; And Others
The major portion of this report provides a narrative summary and description of the work of the project, its context, evaluation, and recommendations. The major objectives of this three-year project were to: 1) field test and evaluate new K-12 social studies curriculum project materials, and 2) design a new K-12 social studies framework based on…
ERIC Educational Resources Information Center
Lukas, George; Feurzeig, Wallace
A description is provided of a computer system designed to aid in the analysis of student programing work. The first section of the report consists of an overview and user's guide. In it, the system input is described in terms of a "dribble file" which records all student inputs generated; also an introduction is given to the aids…
Defense Acquisition Research Journal. Volume 23, Number 4, Issue 79, October 2016
2016-10-01
the final word on ship design decisions, including critical operational requirements and costs. Kuehn provides a captivating description of how the...requires using material from primary sources, including program documents, policy papers, memoranda, surveys , interviews, etc. Articles are...instrument, • describe the limitations of the research, • ensure results are quantitative and qualitative, • determine if the study can be replicated, and
Impact of Attendance on Academic Performance in Prenursing Students.
Branson, Marietta; Loftin, Collette; Hadley, Lance; Hartin, Vicki; Devkota, Shravan
2016-01-01
A descriptive-correlational design was used to explore the relationship between attendance and course grade in a prenursing course. Findings revealed that attendance was positively associated with final course grades (r443 = 0.54, P < .001). Traditional students attended a significantly higher percentage of classes than their nontraditional counterparts. These findings support the long-held belief by nursing faculty that attendance positively impacts course outcomes.
NASA Technical Reports Server (NTRS)
Oneil, W. J.; Rudd, R. P.; Farless, D. L.; Hildebrand, C. E.; Mitchell, R. T.; Rourke, K. H.; Euler, E. A.
1979-01-01
A comprehensive description of the navigation of the Viking spacecraft throughout their flight from Earth launch to Mars landing is given. The flight path design, actual inflight control, and postflight reconstruction are discussed in detail. The preflight analyses upon which the operational strategies and performance predictions were based are discussed. The inflight results are then discussed and compared with the preflight predictions and, finally, the results of any postflight analyses are presented.
ERIC Educational Resources Information Center
Adkins, John; And Others
A project was designed to produce a broad description of current mining training programs and to evaluate their effectiveness with respect to reducing mine injuries. Aggregate training and injury data were used to evaluate the overall training effort at 300 mines as well as specific efforts in 12 categories of training course objectives. From such…
Alternative approaches to analytical designs in occupational injury epidemiology.
Mittleman, M A; Maldonado, G; Gerberich, S G; Smith, G S; Sorock, G S
1997-08-01
In this paper, we discuss the theoretical framework upon which observational studies of occupational injuries are based. Following a general description of how causal effects are estimated, the challenges faced by researchers working in this area are outlined, with an emphasis on case-control studies. These challenges include defining the at-risk period for workers whose tasks change over time and whose hazard period may be very brief, evaluating the underreporting of both exposures and injuries, and considering the effects of multiple injuries per individual on study design and data analysis. We review both the theoretical and practical considerations in the design and conduct of traditional case-control studies, based on the collection of individual level data, as well as other approaches, such as using information culled from administrative and descriptive databases, and case-control studies in which the plant or work site is the unit of analysis. The case-crossover design is also reviewed and its utility for reducing confounding due to differences between individuals by self-matching is highlighted. While this design has not yet been applied to the work setting, its potential for increasing our understanding of the causes of acute-onset occupational injuries seems promising. Finally, a variety of hybrid designs are discussed, including combinations of case-control, case-crossover, and cohort designs.
Software engineering and Ada in design
NASA Technical Reports Server (NTRS)
Oneill, Don
1986-01-01
Modern software engineering promises significant reductions in software costs and improvements in software quality. The Ada language is the focus for these software methodology and tool improvements. The IBM FSD approach, including the software engineering practices that guide the systematic design and development of software products and the management of the software process are examined. The revised Ada design language adaptation is revealed. This four level design methodology is detailed including the purpose of each level, the management strategy that integrates the software design activity with the program milestones, and the technical strategy that maps the Ada constructs to each level of design. A complete description of each design level is provided along with specific design language recording guidelines for each level. Finally, some testimony is offered on education, tools, architecture, and metrics resulting from project use of the four level Ada design language adaptation.
A sectionwise defined model for the material description of 100Cr6 in the thixotropic state
NASA Astrophysics Data System (ADS)
Behrens, B.-A.; Chugreev, A.; Hootak, M.
2018-05-01
A sectionwise defined material model has been developed for the numerical description of thixoforming processes. It consists of two sections. The first one describes the material behaviour below the solidus temperature and comprises an approach from structure mechanics, whereas the second section model describes the thixotropic behaviour above the solidus temperature based on the Ostwald-de Waele power law. The material model has been implemented in a commercial FE software Simufact Forming by means of user-defined subroutines. Numerical and experimental investigations of special upsetting tests have been designed and carried out with Armco iron-coated specimens. Finally, the model parameters were fitted by reverse engineering.
Construction of Interaction Layer on Socio-Environmental Simulation
NASA Astrophysics Data System (ADS)
Torii, Daisuke; Ishida, Toru
In this study, we propose a method to construct a system based on a legacy socio-environmental simulator which enables to design more realistic interaction models in socio-environmetal simulations. First, to provide a computational model suitable for agent interactions, an interaction layer is constructed and connected from outside of a legacy socio-environmental simulator. Next, to configure the agents interacting ability, connection description for controlling the flow of information in the connection area is provided. As a concrete example, we realized an interaction layer by Q which is a scenario description language and connected it to CORMAS, a socio-envirionmental simulator. Finally, we discuss the capability of our method, using the system, in the Fire-Fighter domain.
High efficiency magnetic bearings
NASA Technical Reports Server (NTRS)
Studer, Philip A.; Jayaraman, Chaitanya P.; Anand, Davinder K.; Kirk, James A.
1993-01-01
Research activities concerning high efficiency permanent magnet plus electromagnet (PM/EM) pancake magnetic bearings at the University of Maryland are reported. A description of the construction and working of the magnetic bearing is provided. Next, parameters needed to describe the bearing are explained. Then, methods developed for the design and testing of magnetic bearings are summarized. Finally, a new magnetic bearing which allows active torque control in the off axes directions is discussed.
NASA Technical Reports Server (NTRS)
Bukley, Angie; Paloski, William; Clement, Gilles
2006-01-01
This chapter discusses potential technologies for achieving artificial gravity in a space vehicle. We begin with a series of definitions and a general description of the rotational dynamics behind the forces ultimately exerted on the human body during centrifugation, such as gravity level, gravity gradient, and Coriolis force. Human factors considerations and comfort limits associated with a rotating environment are then discussed. Finally, engineering options for designing space vehicles with artificial gravity are presented.
ERIC Educational Resources Information Center
Grasso, Janet; Fosburg, Steven
Fifth in a series of seven volumes reporting the design, methodology, and findings of the 4-year National Day Care Home Study (NDCHS), this volume presents a descriptive and statistical analysis of the day care institutions that administer day care systems. These systems, such as Learning Unlimited in Los Angeles and the family day care program of…
MDR/Omni-band Reconfigurable Terminal: Design Concept
1998-09-01
tasks, data bases and major communications flows. Global issues relevant to most of the blocks are then covered. Finally the planned sequence of...and event logger that are detailed in later paragraphs. The BITE(built-in test equipment)/Debugger detail can be found separately in the Global Issues paragraphs...conditions. Every part of the simulator has a BITE/Debugger component, the general description of which is given in Global Issues . Simulator control
Farzandipour, Mehrdad; Riazi, Hossein; Jabali, Monireh Sadeqi
2018-01-01
Introduction: System usability assessment is among the important aspects in assessing the quality of clinical information technology, especially when the end users of the system are concerned. This study aims at providing a comprehensive list of system usability. Methods: This research is a descriptive cross-sectional one conducted using Delphi technique in three phases in 2013. After experts’ ideas were concluded, the final version of the questionnaire including 163 items in three phases was presented to 40 users of information systems in hospitals. The grading ranged from 0-4. Data analysis was conducted using SPSS software. Those requirements with a mean point of three or higher were finally confirmed. Results: The list of system usability requirements for electronic health record was designed and confirmed in nine areas including suitability for the task (24 items), self-descriptiveness (22 items), controllability (19 questions), conformity with user expectations (25 items), error tolerance (21 items), suitability for individualization (7 items), suitability for learning (19 items), visual clarity (18 items) and auditory presentation (8 items). Conclusion: A relatively comprehensive model including useful requirements for using EHR was presented which can increase functionality, effectiveness and users’ satisfaction. Thus, it is suggested that the present model be adopted by system designers and healthcare system institutions to assess those systems. PMID:29719310
“Who Doesn’t?”—The Impact of Descriptive Norms on Corruption
Köbis, Nils C.; van Prooijen, Jan-Willem; Righetti, Francesca; Van Lange, Paul A. M.
2015-01-01
Corruption poses one of the major societal challenges of our time. Considerable advances have been made in understanding corruption on a macro level, yet the psychological antecedents of corrupt behavior remain largely unknown. In order to explain why some people engage in corruption while others do not, we explored the impact of descriptive social norms on corrupt behavior by using a novel behavioral measure of corruption. We conducted three studies to test whether perceived descriptive norms of corruption (i.e. the belief about the prevalence of corruption in a specific context) influence corrupt behavior. The results indicated that descriptive norms highly correlate with corrupt behavior—both when measured before (Study 1) or after (Study 2) the behavioral measure of corruption. Finally, we adopted an experimental design to investigate the causal effect of descriptive norms on corruption (Study 3). Corrupt behavior in the corruption game significantly drops when participants receive short anti-corruption descriptive norm primes prior to the game. These findings indicate that perceived descriptive norms can impact corrupt behavior and, possibly, could offer an explanation for inter-personal and inter-cultural variation in corrupt behavior in the real world. We discuss implications of these findings and draw avenues for future research. PMID:26121127
Barlow, D H; Hayes, S C
1979-01-01
A little used and often confused design, capable of comparing two treatments within a single subject, has been termed, variously, a multielement baseline design, a multiple schedule design, and a randomization design. The background of these terms is reviewed, and a new, more descriptive term, Alternating Treatments Design, is proposed. Critical differences between this design and a Simultaneous Treatment Design are outlined, and experimental questions answerable by each design are noted. Potential problems with multiple treatment interference in this procedure are divided into sequential confounding, carryover effects, and alternation effects and the importance of these issues vis-a-vis other single-case experimental designs is considered. Methods of minimizing multiple treatment interference as well as methods of studying these effects are outlined. Finally, appropriate uses of Alternating Treatments Designs are described and discussed in the context of recent examples. PMID:489478
Design of a fuel-efficient guidance system for a STOL aircraft
NASA Technical Reports Server (NTRS)
Mclean, J. D.; Erzberger, H.
1981-01-01
In the predictive mode, the system synthesizes a horizontal path from an initial aircraft position and heading to a desired final position and heading and then synthesizes a fuel-efficient speed-altitude profile along the path. In the track mode, the synthesized trajectory is reconstructed and tracked automatically. An analytical basis for the design of the system is presented and a description of the airborne computer implementation is given. A detailed discussion of the software, which should be helpful to those who use the actual software developed for these tests, is also provided.
Magnetohydrodynamic generator experimental studies
NASA Technical Reports Server (NTRS)
Pierson, E. S.
1972-01-01
The results for an experimental study of a one wavelength MHD induction generator operating on a liquid flow are presented. First the design philosophy and the experimental generator design are summarized, including a description of the flow loop and instrumentation. Next a Fourier series method of treating the fact that the magnetic flux density produced by the stator is not a pure traveling sinusoid is described and some results summarized. This approach appears to be of interest after revisions are made, but the initial results are not accurate. Finally, some of the experimental data is summarized for various methods of excitation.
Energy utilization: municipal waste incineration. Final report
DOE Office of Scientific and Technical Information (OSTI.GOV)
LaBeck, M.F.
An assessment is made of the technical and economical feasibility of converting municipal waste into useful and useable energy. The concept presented involves retrofitting an existing municipal incinerator with the systems and equipment necessary to produce process steam and electric power. The concept is economically attractive since the cost of necessary waste heat recovery equipment is usually a comparatively small percentage of the cost of the original incinerator installation. Technical data obtained from presently operating incinerators designed specifically for generating energy, documents the technical feasibility and stipulates certain design constraints. The investigation includes a cost summary; description of process andmore » facilities; conceptual design; economic analysis; derivation of costs; itemized estimated costs; design and construction schedule; and some drawings.« less
Receptive fields selection for binary feature description.
Fan, Bin; Kong, Qingqun; Trzcinski, Tomasz; Wang, Zhiheng; Pan, Chunhong; Fua, Pascal
2014-06-01
Feature description for local image patch is widely used in computer vision. While the conventional way to design local descriptor is based on expert experience and knowledge, learning-based methods for designing local descriptor become more and more popular because of their good performance and data-driven property. This paper proposes a novel data-driven method for designing binary feature descriptor, which we call receptive fields descriptor (RFD). Technically, RFD is constructed by thresholding responses of a set of receptive fields, which are selected from a large number of candidates according to their distinctiveness and correlations in a greedy way. Using two different kinds of receptive fields (namely rectangular pooling area and Gaussian pooling area) for selection, we obtain two binary descriptors RFDR and RFDG .accordingly. Image matching experiments on the well-known patch data set and Oxford data set demonstrate that RFD significantly outperforms the state-of-the-art binary descriptors, and is comparable with the best float-valued descriptors at a fraction of processing time. Finally, experiments on object recognition tasks confirm that both RFDR and RFDG successfully bridge the performance gap between binary descriptors and their floating-point competitors.
Integrated flight/propulsion control system design based on a decentralized, hierarchical approach
NASA Technical Reports Server (NTRS)
Mattern, Duane; Garg, Sanjay; Bullard, Randy
1989-01-01
A sample integrated flight/propulsion control system design is presented for the piloted longitudinal landing task with a modern, statistically unstable fighter aircraft. The design procedure is summarized. The vehicle model used in the sample study is described, and the procedure for partitioning the integrated system is presented along with a description of the subsystems. The high-level airframe performance specifications and control design are presented and the control performance is evaluated. The generation of the low-level (engine) subsystem specifications from the airframe requirements are discussed, and the engine performance specifications are presented along with the subsystem control design. A compensator to accommodate the influence of airframe outputs on the engine subsystem is also considered. Finally, the entire closed loop system performance and stability characteristics are examined.
Integrated flight/propulsion control system design based on a decentralized, hierarchical approach
NASA Technical Reports Server (NTRS)
Mattern, Duane; Garg, Sanjay; Bullard, Randy
1989-01-01
A sample integrated flight/propulsion control system design is presented for the piloted longitiudinal landing task with a modern, statistically unstable fighter aircraft. The design procedure is summarized, the vehicle model used in the sample study is described, and the procedure for partitioning the integrated system is presented along with a description of the subsystems. The high-level airframe performance specifications and control design are presented and the control performance is evaluated. The generation of the low-level (engine) subsystem specifications from the airframe requirements are discussed, and the engine performance specifications are presented along with the subsystem control design. A compensator to accommodate the influence of airframe outputs on the engine subsystem is also considered. Finally, the entire closed loop system performance and stability characteristics are examined.
1980-01-01
82179 15/5 MANTECH OF NEW JERSEY CORP NEW SHREWSBURY COMMUNICATIONS AND SYSTEMS OPERATION AN/TPO-36 Mzrtar Artillery Locating Radar T~ansoort...BOEING MILITARY AIRPLANE DEVELOPMENT ORGANIZATION New Strategic Airlift Concepts Study. Volume I. Executive Summary. (U) DESCRIPTIVE ’ OTE: Final rept...Gliders (U) !DENT!FIERS: Aircraft design, Boeing 747 aircraft, PEe2201F, wUAFFDL24040103 (U) Tme New Strategic A;rlift Concepts Study had as ’ts
1980-01-01
land- marks are the San Pedro Breakwater and Angels Gate Lighthouse, the Termial Island Schoolhouse, and the Municipal Fish Market. Descriptions of...MILES, Chairman Navigation and Ocean Development Commission I, Marty Mercado , Secretary of the Navigation and Ocean Development Commission, do hereby...officials who have authority or responsibility in this area. STAN1&’.~LIMCara NAVIGATION AND OCEAN DEVELOPMENT COIISSION I, Marty Mercado , Secretary
ERIC Educational Resources Information Center
Hutchins, C. L.; And Others
A description is given of alternative goals and plans for introducing a program for civil defense readiness in grades 7-9. This program is designed to train young people in survival skills for disasters, both natural and man-made. While emphasis is placed on children at the junior high school level, an outline is provided for extending such…
The electrical power subsystem design for the high energy solar physics spacecraft concepts
NASA Technical Reports Server (NTRS)
Kulkarni, Milind
1993-01-01
This paper discusses the Electrical Power Subsystem (EPS) requirements, architecture, design description, performance analysis, and heritage of the components for two spacecraft concepts for the High Energy Solar Physics (HESP) Mission. It summarizes the mission requirements and the spacecraft subsystems and instrument power requirements, and it describes the EPS architecture for both options. A trade study performed on the selection of the solar cells - body mounted versus deployed panels - and the optimum number of panels is also presented. Solar cell manufacturing losses, array manufacturing losses, and the radiation and temperature effects on the GaAs/Ge and Si solar cells were considered part of the trade study and are included in this paper. Solar cell characteristics, cell circuit description, and the solar array area design are presented, as is battery sizing analysis performed based on the power requirements during launch and initial spacecraft operations. This paper discusses Earth occultation periods and the battery power requirements during this period as well as shunt control, battery conditioning, and bus regulation schemes. Design margins, redundancy philosophy, and predicted on-orbit battery and solar cell performance are summarized. Finally, the heritage of the components and technology risk assessment are provided.
Test results and description of a 1-kW free-piston Stirling engine with a dashpot load
NASA Technical Reports Server (NTRS)
Schreiber, J.
1983-01-01
A 1 kW (1.33 hp) single cylinder free piston Stirling engine was installed in the test facilities at the Lewis laboratory. The engine was designed specifically for research of the dynamics of its operation. A more complete description of the engine and its instrumentation is provided in a prior NASA paper TM-82999 by J. G. Schreiber. Initial tests at Lewis showed the power level and efficiency of the engine to be below design level. Tests were performed to help determine the specific problems in the engine causing the below design level performance. Modifications to engine hardware and to the facility where performed in an effort to bring the power output and efficiency to their design values. As finally configured the engine generated more than 1250 watts of output power at an engine efficiency greater than 32 percent. This report presents the tests performed to help determine the specific problems, the results if the problem was eliminated, the fix performed to the hardware, and the test results after the engine was tested. In cases where the fix did not cause the anticipated effects, a possible explanation is given.
Sketching Designs Using the Five Design-Sheet Methodology.
Roberts, Jonathan C; Headleand, Chris; Ritsos, Panagiotis D
2016-01-01
Sketching designs has been shown to be a useful way of planning and considering alternative solutions. The use of lo-fidelity prototyping, especially paper-based sketching, can save time, money and converge to better solutions more quickly. However, this design process is often viewed to be too informal. Consequently users do not know how to manage their thoughts and ideas (to first think divergently, to then finally converge on a suitable solution). We present the Five Design Sheet (FdS) methodology. The methodology enables users to create information visualization interfaces through lo-fidelity methods. Users sketch and plan their ideas, helping them express different possibilities, think through these ideas to consider their potential effectiveness as solutions to the task (sheet 1); they create three principle designs (sheets 2,3 and 4); before converging on a final realization design that can then be implemented (sheet 5). In this article, we present (i) a review of the use of sketching as a planning method for visualization and the benefits of sketching, (ii) a detailed description of the Five Design Sheet (FdS) methodology, and (iii) an evaluation of the FdS using the System Usability Scale, along with a case-study of its use in industry and experience of its use in teaching.
Injector Design Tool Improvements: User's manual for FDNS V.4.5
NASA Technical Reports Server (NTRS)
Chen, Yen-Sen; Shang, Huan-Min; Wei, Hong; Liu, Jiwen
1998-01-01
The major emphasis of the current effort is in the development and validation of an efficient parallel machine computational model, based on the FDNS code, to analyze the fluid dynamics of a wide variety of liquid jet configurations for general liquid rocket engine injection system applications. This model includes physical models for droplet atomization, breakup/coalescence, evaporation, turbulence mixing and gas-phase combustion. Benchmark validation cases for liquid rocket engine chamber combustion conditions will be performed for model validation purpose. Test cases may include shear coaxial, swirl coaxial and impinging injection systems with combinations LOXIH2 or LOXISP-1 propellant injector elements used in rocket engine designs. As a final goal of this project, a well tested parallel CFD performance methodology together with a user's operation description in a final technical report will be reported at the end of the proposed research effort.
Global Sentry: NASA/USRA high altitude reconnaissance aircraft design, volume 2
NASA Technical Reports Server (NTRS)
Alexandru, Mona-Lisa; Martinez, Frank; Tsou, Jim; Do, Henry; Peters, Ashish; Chatsworth, Tom; Yu, YE; Dhillon, Jaskiran
1990-01-01
The Global Sentry is a high altitude reconnaissance aircraft design for the NASA/USRA design project. The Global Sentry uses proven technologies, light-weight composites, and meets the R.F.P. requirements. The mission requirements for the Global Sentry are described. The configuration option is discussed and a description of the final design is given. Preliminary sizing analyses and the mass properties of the design are presented. The aerodynamic features of the Global Sentry are described along with the stability and control characteristics designed into the flight control system. The performance characteristics are discussed as is the propulsion installation and system layout. The Global Sentry structural design is examined, including a wing structural analysis. The cockpit, controls and display layouts are covered. Manufacturing is covered and the life cost estimation. Reliability is discussed. Conclusions about the current Global Sentry design are presented, along with suggested areas for future engineering work.
Brunetti, Riccardo; Manni, Lucia; Mastrototaro, Francesco; Gissi, Carmela; Gasparini, Fabio
2017-11-22
Botryllus schlosseri is a widespread colonial ascidian commonly considered cosmopolitan and amply used as model for researches ranging from developmental biology to immunobiology. Recently, molecular data lead to hypothesize that the species named B. schlosseri may consist of more than a single taxon. Indeed, five highly divergent clades, named A-E, have been genetically identified and are referred as cryptic species. In this context, and lacking both a type and a detailed morphological description, we believe that it is necessary, as a taxonomic reference point, to designate a neotype and re-describe the species. Therefore, a sample from the Lagoon of Venice (Adriatic Sea, Italy) was deposited as neotype in the Natural History Museum of Venice (Italy), preserved both in formalin and in 90% ethanol. Here we provide a morphological description of the suggested neotype of B. schlosseri that takes into account several developmental stages (oozooid, zooid of first blastogenic generations, and mature zooid) and is carefully compared with the previous descriptions of samples coming from other European and non-European localities. Finally, we associate our morphological description to a "DNA barcode", consisting in a long fragment of the mitochondrial COI gene. Our description is associated to clade A, although at now we cannot guarantee that this association is univocal.
VHDL Descriptions for the FPGA Implementation of PWL-Function-Based Multi-Scroll Chaotic Oscillators
2016-01-01
Nowadays, chaos generators are an attractive field for research and the challenge is their realization for the development of engineering applications. From more than three decades ago, chaotic oscillators have been designed using discrete electronic devices, very few with integrated circuit technology, and in this work we propose the use of field-programmable gate arrays (FPGAs) for fast prototyping. FPGA-based applications require that one be expert on programming with very-high-speed integrated circuits hardware description language (VHDL). In this manner, we detail the VHDL descriptions of chaos generators for fast prototyping from high-level programming using Python. The cases of study are three kinds of chaos generators based on piecewise-linear (PWL) functions that can be systematically augmented to generate even and odd number of scrolls. We introduce new algorithms for the VHDL description of PWL functions like saturated functions series, negative slopes and sawtooth. The generated VHDL-code is portable, reusable and open source to be synthesized in an FPGA. Finally, we show experimental results for observing 2, 10 and 30-scroll attractors. PMID:27997930
Tlelo-Cuautle, Esteban; Quintas-Valles, Antonio de Jesus; de la Fraga, Luis Gerardo; Rangel-Magdaleno, Jose de Jesus
2016-01-01
Nowadays, chaos generators are an attractive field for research and the challenge is their realization for the development of engineering applications. From more than three decades ago, chaotic oscillators have been designed using discrete electronic devices, very few with integrated circuit technology, and in this work we propose the use of field-programmable gate arrays (FPGAs) for fast prototyping. FPGA-based applications require that one be expert on programming with very-high-speed integrated circuits hardware description language (VHDL). In this manner, we detail the VHDL descriptions of chaos generators for fast prototyping from high-level programming using Python. The cases of study are three kinds of chaos generators based on piecewise-linear (PWL) functions that can be systematically augmented to generate even and odd number of scrolls. We introduce new algorithms for the VHDL description of PWL functions like saturated functions series, negative slopes and sawtooth. The generated VHDL-code is portable, reusable and open source to be synthesized in an FPGA. Finally, we show experimental results for observing 2, 10 and 30-scroll attractors.
Minimally inconsistent reasoning in Semantic Web.
Zhang, Xiaowang
2017-01-01
Reasoning with inconsistencies is an important issue for Semantic Web as imperfect information is unavoidable in real applications. For this, different paraconsistent approaches, due to their capacity to draw as nontrivial conclusions by tolerating inconsistencies, have been proposed to reason with inconsistent description logic knowledge bases. However, existing paraconsistent approaches are often criticized for being too skeptical. To this end, this paper presents a non-monotonic paraconsistent version of description logic reasoning, called minimally inconsistent reasoning, where inconsistencies tolerated in the reasoning are minimized so that more reasonable conclusions can be inferred. Some desirable properties are studied, which shows that the new semantics inherits advantages of both non-monotonic reasoning and paraconsistent reasoning. A complete and sound tableau-based algorithm, called multi-valued tableaux, is developed to capture the minimally inconsistent reasoning. In fact, the tableaux algorithm is designed, as a framework for multi-valued DL, to allow for different underlying paraconsistent semantics, with the mere difference in the clash conditions. Finally, the complexity of minimally inconsistent description logic reasoning is shown on the same level as the (classical) description logic reasoning.
Minimally inconsistent reasoning in Semantic Web
Zhang, Xiaowang
2017-01-01
Reasoning with inconsistencies is an important issue for Semantic Web as imperfect information is unavoidable in real applications. For this, different paraconsistent approaches, due to their capacity to draw as nontrivial conclusions by tolerating inconsistencies, have been proposed to reason with inconsistent description logic knowledge bases. However, existing paraconsistent approaches are often criticized for being too skeptical. To this end, this paper presents a non-monotonic paraconsistent version of description logic reasoning, called minimally inconsistent reasoning, where inconsistencies tolerated in the reasoning are minimized so that more reasonable conclusions can be inferred. Some desirable properties are studied, which shows that the new semantics inherits advantages of both non-monotonic reasoning and paraconsistent reasoning. A complete and sound tableau-based algorithm, called multi-valued tableaux, is developed to capture the minimally inconsistent reasoning. In fact, the tableaux algorithm is designed, as a framework for multi-valued DL, to allow for different underlying paraconsistent semantics, with the mere difference in the clash conditions. Finally, the complexity of minimally inconsistent description logic reasoning is shown on the same level as the (classical) description logic reasoning. PMID:28750030
SIGMA Final Report. Volume V, Part 1-3. Introduction, Functional Description and Evaluation.
1982-05-01
AD-AlSb 359 UNIVERSITY OF SOUTHERN CALIFORNIA MARINA DEL REY INFO-ETC F/6 17/2 SIGMA FINAL REPORT . VOLUME V. PART 1-3. INTRODUCTION. FUNCTIONA-ETC(U...EIIIIIIIIIIIIE IIIEIIIIEIIIII 111111111111flfflfflEllllllEEllEE H ~28 ",2,5 11111 ..25 .411111 ii1.6 MICROCOPY RESOLUTION TEST CHAFT N W MME Final Report ...Volume V, Parts 1, 2, and 3 ISI/FiR-82-94 SIGMA Final Report : Introduction, Functional Description, and Evaluation Robert Stotz David Wilczynski
Small-sided games in football as a method to improve high school students’ instep passing skills
NASA Astrophysics Data System (ADS)
Ridwan, M.; Darmawan, G.; Fuadi, Z.
2018-01-01
This study analyzed the influence of small sided games application toward increasing the learning result of instep passing in football. The research used one group pretest-posttest design. The data were obtained once a week for 135 minutes of small sided games and this activity had been held for four weeks with a final test in the final meeting. According to descriptive data result, there were increases of the mean. The data showed the increase of the application of small sided games resulted in not only the mean of the descriptive data but also the result of T-test. The significant of T-test is 0,000. It means less than 0,05 then the hypothesis Ha received and Ho rejected automatically. The presentation showed that 48,15% data is increasing by small-sided games application. The small-sided games were proven to be the right tool to increase instep passing football technique. We suggested to the apply that kind of games of football learning on physical education subject, especially for pre-university students.
Mars Science Laboratory CHIMRA: A Device for Processing Powdered Martian Samples
NASA Technical Reports Server (NTRS)
Sunshine, Daniel
2010-01-01
The CHIMRA is an extraterrestrial sample acquisition and processing device for the Mars Science Laboratory that emphasizes robustness and adaptability through design configuration. This work reviews the guidelines utilized to invent the initial CHIMRA and the strategy employed in advancing the design; these principles will be discussed in relation to both the final CHIMRA design and similar future devices. The computational synthesis necessary to mature a boxed-in impact-generating mechanism will be presented alongside a detailed mechanism description. Results from the development testing required to advance the design for a highly-loaded, long-life and high-speed bearing application will be presented. Lessons learned during the assembly and testing of this subsystem as well as results and lessons from the sample-handling development test program will be reviewed.
Radiation protective structure alternatives for habitats of a lunar base research outpost
NASA Technical Reports Server (NTRS)
Bell, Fred J.; Foo, Lai T.; Mcgrew, William P.
1988-01-01
The solar and galactic cosmic radiation levels on the Moon pose a hazard to extended manned lunar missions. Lunar soil represents an available, economical material to be used for radiation shielding. Several alternatives have been suggested to use lunar soil to protect the inhabitants of a lunar base research outpost from radiation. The Universities Space Research Association has requested that a comparative analysis of the alternatives be performed, with the purpose of developing the most advantageous design. Eight alternatives have been analyzed, including an original design which was developed to satisfy the identified design criteria. The original design consists of a cylindrical module and airlock, partially buried in the lunar soil, at a depth sufficient to achieve adequate radiation shielding. The report includes descriptions of the alternatives considered, the method of analysis used, and the final design selected.
NetList(+): A simple interface language for chip design
NASA Astrophysics Data System (ADS)
Wuu, Tzyh-Yung
1991-04-01
NetList (+) is a design specification language developed at MOSIS for rapid turn-around cell-based ASIC prototyping. By using NetList (+), a uniform representation is achieved for the specification, simulation, and physical description of a design. The goal is to establish an interfacing methodology between design specification and independent computer aided design tools. Designers need only to specify a system by writing a corresponding netlist. This netlist is used for both functional simulation and timing simulation. The same netlist is also used to derive the low level physical tools to generate layout. Another goal of using NetList (+) is to generate parts of a design by running it through different kinds of placement and routing (P and R) tools. For example some parts of a design will be generated by standard cell P and R tools. Other parts may be generated by a layout tiler; i.e., datapath compiler, RAM/ROM generator, or PLA generator. Finally all different parts of a design can be integrated by general block P and R tools as a single chip. The NetList (+) language can actually act as an interface among tools. Section 2 shows a flowchart to illustrate the NetList (+) system and its relation with other related design tools. Section 3 shows how to write a NetList (+) description from the block diagram of a circuit. In section 4 discusses how to prepare a cell library or several cell libraries for a design system. Section 5 gives a few designs by NetList (+) and shows their simulation and layout results.
Calibrating LOFAR using the Black Board Selfcal System
NASA Astrophysics Data System (ADS)
Pandey, V. N.; van Zwieten, J. E.; de Bruyn, A. G.; Nijboer, R.
2009-09-01
The Black Board SelfCal (BBS) system is designed as the final processing system to carry out the calibration of LOFAR in an efficient way. In this paper we give a brief description of its architectural and software design including its distributed computing approach. A confusion limited deep all sky image (from 38-62 MHz) by calibrating LOFAR test data with the BBS suite is shown as a sample result. The present status and future directions of development of BBS suite are also touched upon. Although BBS is mainly developed for LOFAR, it may also be used to calibrate other instruments once their specific algorithms are plugged in.
Development and characteristics of the hardware for Skylab experiment S015
NASA Technical Reports Server (NTRS)
Thirolf, R. G.
1975-01-01
Details are given regarding the hardware for the Skylab S015 experiment, which was designed to detect the effects of zero gravity on cell growth rates. Experience gained in hardware-related considerations is presented for use of researchers concerned with future research of this type and further study of the S015 results. Brief descriptions are given of the experiment hardware, the hardware configuration for the critical design review, the major configuration changes, the final configuration, and the postflight review and analysis. An appendix describes pertinent documentation, film, and hardware that are available to qualified researchers; sources for additional or special information are given.
Optics of high-performance electron microscopes*
Rose, H H
2008-01-01
During recent years, the theory of charged particle optics together with advances in fabrication tolerances and experimental techniques has lead to very significant advances in high-performance electron microscopes. Here, we will describe which theoretical tools, inventions and designs have driven this development. We cover the basic theory of higher-order electron optics and of image formation in electron microscopes. This leads to a description of different methods to correct aberrations by multipole fields and to a discussion of the most advanced design that take advantage of these techniques. The theory of electron mirrors is developed and it is shown how this can be used to correct aberrations and to design energy filters. Finally, different types of energy filters are described. PMID:27877933
Lopes; Oden
1999-06-01
In recent years, descriptive models of risky choice have incorporated features that reflect the importance of particular outcome values in choice. Cumulative prospect theory (CPT) does this by inserting a reference point in the utility function. SP/A (security-potential/aspiration) theory uses aspiration level as a second criterion in the choice process. Experiment 1 compares the ability of the CPT and SP/A models to account for the same within-subjects data set and finds in favor of SP/A. Experiment 2 replicates the main finding of Experiment 1 in a between-subjects design. The final discussion brackets the SP/A result by showing the impact on fit of both decreasing and increasing the number of free parameters. We also suggest how the SP/A approach might be useful in modeling investment decision making in a descriptively more valid way and conclude with comments on the relation between descriptive and normative theories of risky choice. Copyright 1999 Academic Press.
A Process Algebraic Approach to Software Architecture Design
NASA Astrophysics Data System (ADS)
Aldini, Alessandro; Bernardo, Marco; Corradini, Flavio
Process algebra is a formal tool for the specification and the verification of concurrent and distributed systems. It supports compositional modeling through a set of operators able to express concepts like sequential composition, alternative composition, and parallel composition of action-based descriptions. It also supports mathematical reasoning via a two-level semantics, which formalizes the behavior of a description by means of an abstract machine obtained from the application of structural operational rules and then introduces behavioral equivalences able to relate descriptions that are syntactically different. In this chapter, we present the typical behavioral operators and operational semantic rules for a process calculus in which no notion of time, probability, or priority is associated with actions. Then, we discuss the three most studied approaches to the definition of behavioral equivalences - bisimulation, testing, and trace - and we illustrate their congruence properties, sound and complete axiomatizations, modal logic characterizations, and verification algorithms. Finally, we show how these behavioral equivalences and some of their variants are related to each other on the basis of their discriminating power.
[Modeling and implementation method for the automatic biochemistry analyzer control system].
Wang, Dong; Ge, Wan-cheng; Song, Chun-lin; Wang, Yun-guang
2009-03-01
In this paper the system structure The automatic biochemistry analyzer is a necessary instrument for clinical diagnostics. First of is analyzed. The system problems description and the fundamental principles for dispatch are brought forward. Then this text puts emphasis on the modeling for the automatic biochemistry analyzer control system. The objects model and the communications model are put forward. Finally, the implementation method is designed. It indicates that the system based on the model has good performance.
Advanced exterior sensor project : final report, September 2004.
DOE Office of Scientific and Technical Information (OSTI.GOV)
Ashby, M. Rodema
2004-12-01
This report (1) summarizes the overall design of the Advanced Exterior Sensor (AES) system to include detailed descriptions of system components, (2) describes the work accomplished throughout FY04 to evaluate the current health of the original prototype and to return it to operation, (3) describes the status of the AES and the AES project as of September 2004, and (4) details activities planned to complete modernization of the system to include development and testing of the second-generation AES prototype.
DOE Office of Scientific and Technical Information (OSTI.GOV)
Weber, E.R.
1983-09-01
The appendixes for the Saguaro Power Plant includes the following: receiver configuration selection report; cooperating modes and transitions; failure modes analysis; control system analysis; computer codes and simulation models; procurement package scope descriptions; responsibility matrix; solar system flow diagram component purpose list; thermal storage component and system test plans; solar steam generator tube-to-tubesheet weld analysis; pipeline listing; management control schedule; and system list and definitions.
METRRA Signature - Radar Cross Section Measurements. Final Report/ Instruction Manual
1978-12-01
Configuration 1 1. 5 Condensed System Parameters 1 1.5.1 Transmitter 1 1.5.2 Receiver 4 2.0 Description 5 V 2.1 Transmitter 5 2.3 Receiver 10 2.4 Antennas 14...System Configuration. 1.4.1 See Figure 1.4.2. 1.5 Condensed System Parameters . 1.5.1 Transmitter. "Mainframe: Applied Microwave Laboratory, Model...for Cubic Defense by Addington Laboratories. Techebychev designs are used for both filters to provide the steepest skirts for given numbers of reactive
A set of devices for Mechanics Laboratory assisted by a Computer
NASA Astrophysics Data System (ADS)
Rusu, Alexandru; Pirtac, Constantin
2015-12-01
The booklet give a description of a set of devices designed for unified work out of a number of Laboratory works in Mechanics for students at Technical Universities. It consists of a clock, adjusted to a computer, which allows to compute times with an error not greater than 0.0001 s. It allows also to make the calculations of the physical quantities measured in the experience and present the compilation of the final report. The least square method is used throughout the workshop.
SPOT 4 space magnetic recorder mechanisms
NASA Technical Reports Server (NTRS)
Borrien, A.; Vialatoux, E.; Lhermet, J. L.; Didier, A.
1990-01-01
The design of the SPOT 4 satellite will be quite different from the previous ones. The design of the new magnetic tape recorder, which was derived from industrial knowledge and mission requirements; the main technical characteristics of the recorder; and the mechanical subsystems of the recorder and their locations and contributions to the final performance are all discussed. The philosophy of the development program, required to achieve the desired performance and reliability for each flight model, is described, and information on the schedule and current development is presented. The components of the tape plate system, (the transmission belts, tape rollers of the recorders, and reel hub ball bearings) which are subjected to heavy mechanical operation, fatigue, and wear in the thermal environment of the mission, are discussed. For each of the components, a description of its function in the recorder is given, as well as the mechanical stress imposed during the various operational phases. The quality testing program, which was used to verify the design safety margins, is described. Finally, the first test results of a functioning model of the flight system are presented.
Overview of the 1986 free-piston Stirling SP-100 activities at the NASA Lewis Research Center
NASA Technical Reports Server (NTRS)
Slaby, J. G.
1986-01-01
An overview of the NASA Lewis Research Center SP-100 free-piston Stirling engine activities is presented. These activities include a free-piston Stirling space-power technology feasibility demonstration project as part of the SP-100 program being conducted in support of the Department of Defennse (DOD), Department of Energy (DOE), and NASA. The space-power Stirling advanced technology effort, under SP-100, addresses the status of the 25 kWe Space Power Demonstrator Engine (SPDE) including test results. Future space-power projections are presented along with a description of a study that will investigate the feasibility of scaling a single-cylinder free-piston Stirling space-power module to the 150 kW power range. Design parameters and conceptual design features will be presented for a 25 kWe, single-cylinder free-piston Stirling space-power converter. A description of a hydrodynamic gas bearing concept is presented whereby the displacer of a 1 kWe free-piston Stirling engine is modified to demonstrate the bearing concept. And finally the goals of a conceptual design for a 25 kWe Solar Advanced Stirling Conversion System capable of delivering electric power to an electric utility grid are discussed.
Overview of the 1986 free-piston Stirling SP-100 activities at the NASA Lewis Research Center
NASA Technical Reports Server (NTRS)
Slaby, J. G.
1986-01-01
An overview of the NASA Lewis Research Center SP-100 free-piston Stirling engine activities is presented. These activities include a free-piston Stirling space-power technology feasibility demonstration project as part of the SP-100 program being conducted in support of the Department of Defense (DOD), Department of Energy (DOE), and NASA. The space-power Stirling advanced technology effort, under SP-100, addresses the status of the 25 kWe Space Power Demonstrator Engine (SPDE) including test results. Future space-power projections are presented along with a description of a study that will investigate the feasibility of scaling a single-cylinder free-piston Stirling space-power module to the 150 kW power range. Design parameters and conceptual design features will be presented for a 25 kWe, single-cylinder free-piston Stirling space-power converter. A description of a hydrodynamic gas bearing concept is presented whereby the displacer of a 1 kWe free-piston Stirling engine is modified to demonstrate the bearing concept. And finally the goals of a conceptual design for a 25 kWe Solar Advanced Stirling Conversion System capable of delivering electric power to an electric utility grid are discussed.
van der Riet, Pamela; Levett-Jones, Tracy; Courtney-Pratt, Helen
2018-05-01
Clinical placements are specifically designed to facilitate authentic learning opportunities and are an integral component of undergraduate nursing programs. However, as academics and clinicians frequently point out, clinical placements are fraught with problems that are long-standing and multidimensional in nature. Collaborative placement models, grounded in a tripartite relationship between students, university staff and clinical partners, and designed to foster students' sense of belonging, have recently been implemented to address many of the challenges associated with clinical placements. In this study a qualitative descriptive design was undertaken with the aim of exploring 14 third year third year nursing students' perceptions of a collaborative clinical placement model undertaken in an Australian university. Students participated in audio recorded focus groups following their final clinical placement. Thematic analysis of the interview data resulted in identification of six main themes: Convenience and Camaraderie, Familiarity and Confidence, Welcomed and Wanted, Belongingness and Support, Employment, and The Need for Broader Clinical Experiences. The clinical collaborative model fostered a sense of familiarity for many of the participants and this led to belongingness, acceptance, confidence and meaningful learning experiences. Copyright © 2018 Elsevier Ltd. All rights reserved.
Optical analysis of laser systems using interferometry
NASA Astrophysics Data System (ADS)
Viswanathan, V. K.; Liberman, I.; Lawrence, G.; Seery, B. D.
1980-06-01
It is noted that previous approaches of predicting focal spot parameters involved the digitization of interference patterns of the optical components and propagation of the complex amplitude and phase of the wave front throughout the system. The present paper describes an approach in which the computational procedure is extended to produce computer plots of the final emerging wave front. It is shown that this enables direct comparison with the experimentally produced wave front of the total system and makes possible the optical analysis, design, and possible optimization of laser systems. A description is given of the computational procedure and the Twyman-Green and Smartt IR interferometers constructed to verify this approach. Finally, consideration is given to the implications of the results.
Güner, Perihan
2015-01-01
The purpose of this study is to determine the perceptions of final-year nursing students regarding the adequacy of education, resources and internships in preparation for graduation. The study design was a descriptive cross-sectional study of nursing students (n: 1804) in their final year of education and questionnaires were used to collect data. Information related to student-to-instructor ratios and internships was obtained from each institution. Most students reported receiving instruction or supervision by lecturers and clinicians who did not specialise in the field. Overall, students did not find the facilities, educational or technological resources and the quality of education offered by their respective schools adequate. The proportion of students who found the level of theoretical education, clinical practice and instructor support adequate was higher in state university colleges of nursing/faculties of health sciences than in state university schools of health sciences.
Analysis of a Radiation Model of the Shuttle Space Suit
NASA Technical Reports Server (NTRS)
Anderson, Brooke M.; Nealy, John E.; Kim, Myung-Hee; Qualls, Garry D.; Wilson, John W.
2003-01-01
The extravehicular activity (EVA) required to assemble the International Space Station (ISS) will take approximately 1500 hours with 400 hours of EVA per year in operations and maintenance. With the Space Station at an inclination of 51.6 deg the radiation environment is highly variable with solar activity being of great concern. Thus, it is important to study the dose gradients about the body during an EVA to help determine the cancer risk associated with the different environments the ISS will encounter. In this paper we are concerned only with the trapped radiation (electrons and protons). Two different scenarios are looked at: the first is the quiet geomagnetic periods in low Earth orbit (LEO) and the second is during a large solar particle event in the deep space environment. This study includes a description of how the space suit's computer aided design (CAD) model was developed along with a description of the human model. Also included is a brief description of the transport codes used to determine the total integrated dose at several locations within the body. Finally, the results of the transport codes when applied to the space suit and human model and a brief description of the results are presented.
Design Aspects of the VLBI2010 System - Progress Report of the IVS VLBI2010 Committee
NASA Technical Reports Server (NTRS)
Petrachenko, Bill; Niell, Arthur; Behrend, Dirk; Corey, Brian; Boehm, Johannes; Chralot, Patrick; Collioud, Arnaud; Gipson, John; Haas, Ruediger; Hobiger, Thomas;
2009-01-01
This report summarizes the progress made in developing the next generation VLBI system, dubbed the VLBI2010 system. The VLBI2010 Committee of the International VLBI Service for Geodesy and Astrometry (IVS) worked on the design aspects of the new system. The report covers Monte Carlo simulations showing the impact of the new operating modes on the final products. A section on system considerations describes the implications for the VLBI2010 system parameters by considering the new modes and system-related issues such as sensitivity, antenna slew rate, delay measurement error. RF1, frequency requirements, antenna deformation, and source structure corrections_ This is followed by a description of all major subsystems and recommendations for the network, station. and antenna. Then aspects of the feed, polarization processing. calibration, digital back end, and correlator subsystems are covered. A section is dedicated to the NASA. proof-of-concept demonstration. Finally, sections tm operational considerations, on risks and fallback options, and on the next steps complete the report.
Design, analysis, and test verification of advanced encapsulation systems
NASA Technical Reports Server (NTRS)
Mardesich, N.; Minning, C.
1982-01-01
Design sensitivities are established for the development of photovoltaic module criteria and the definition of needed research tasks. The program consists of three phases. In Phase I, analytical models were developed to perform optical, thermal, electrical, and structural analyses on candidate encapsulation systems. From these analyses several candidate systems will be selected for qualification testing during Phase II. Additionally, during Phase II, test specimens of various types will be constructed and tested to determine the validity of the analysis methodology developed in Phase I. In Phse III, a finalized optimum design based on knowledge gained in Phase I and II will be developed. All verification testing was completed during this period. Preliminary results and observations are discussed. Descriptions of the thermal, thermal structural, and structural deflection test setups are included.
Federal Register 2010, 2011, 2012, 2013, 2014
2013-09-13
... DEPARTMENT OF AGRICULTURE Forest Service Boundary Description and Final Map for Sandy Wild and...: Notice of availability. SUMMARY: In accordance with section 3(b) of the Wild and Scenic Rivers Act, the... Sandy Wild and Scenic River, Upper Portion, to Congress. DATES: The boundaries and classification of the...
Anticancer drug discovery and pharmaceutical chemistry: a history.
Braña, Miguel F; Sánchez-Migallón, Ana
2006-10-01
There are several procedures for the chemical discovery and design of new drugs from the point of view of the pharmaceutical or medicinal chemistry. They range from classical methods to the very new ones, such as molecular modeling or high throughput screening. In this review, we will consider some historical approaches based on the screening of natural products, the chances for luck, the systematic screening of new chemical entities and serendipity. Another group comprises rational design, as in the case of metabolic pathways, conformation versus configuration and, finally, a brief description on available new targets to be carried out. In each approach, the structure of some examples of clinical interest will be shown.
Extended GTST-MLD for aerospace system safety analysis.
Guo, Chiming; Gong, Shiyu; Tan, Lin; Guo, Bo
2012-06-01
The hazards caused by complex interactions in the aerospace system have become a problem that urgently needs to be settled. This article introduces a method for aerospace system hazard interaction identification based on extended GTST-MLD (goal tree-success tree-master logic diagram) during the design stage. GTST-MLD is a functional modeling framework with a simple architecture. Ontology is used to extend the ability of system interaction description in GTST-MLD by adding the system design knowledge and the past accident experience. From the level of functionality and equipment, respectively, this approach can help the technician detect potential hazard interactions. Finally, a case is used to show the method. © 2011 Society for Risk Analysis.
An approach to the design and implementation of spacecraft attitude control systems
NASA Technical Reports Server (NTRS)
ODonnell, James R., Jr.; Mangus, David J.
1998-01-01
Over 39 years and a long list of missions, the guidance, navigation, and control (GN&C) groups at the Goddard Space Flight Center have gradually developed approaches to the design and implementation of successful spacecraft attitude control systems. With the recent creation of the Guidance, Navigation, and Control Center at Goddard, there is a desire to document some of these design practices to help to ensure their consistent application in the future. In this paper, we will discuss the beginnings of this effort, drawing primarily on the experience of one of the past attitude control system (ACS) groups at Goddard (what was formerly known as Code 712, the Guidance, Navigation, and Control Branch). We will discuss the analysis and design methods and criteria used, including guidelines for linear and nonlinear analysis, as well as the use of low- and high-fidelity simulation for system design and verification of performance. Descriptions of typical ACS sensor and actuator hardware will be shown, and typical sensor/actuator suites for a variety of mission types detailed. A description of the software and hardware test effort will be given, along with an attempt to make some qualitative estimates on how much effort is involved. The spacecraft and GN&C subsystem review cycles will be discussed, giving an outline of what design reviews are typically held and what information should be presented at each stage. Finally, we will point out some of the lessons learned at Goddard.
An Approach to the Design and Implementation of Spacecraft Attitude Control Systems
NASA Technical Reports Server (NTRS)
ODonnell, James R., Jr.; Mangus, David J.
1998-01-01
Over 39 years and a long list of missions, the guidance, navigation, and control (GN&C) groups at the Goddard Space Flight Center have gradually developed approaches to the design and implementation of successful spacecraft attitude control systems. With the recent creation of the Guidance, Navigation, and Control Center at Goddard, there is a desire to document some of these design practices to help to ensure their consistent application in the future. In this paper, we will discuss the beginnings of this effort, drawing primarily on the experience of one of the past attitude control system (ACS) groups at Goddard (what was formerly known as Code 712, the Guidance, Navigation, and Control Branch). We will discuss the analysis and design methods and criteria used, including guidelines for linear and nonlinear analysis, as well as the use of low- and high-fidelity simulation for system design and verification of performance. Descriptions of typical ACS sensor and actuator hardware will be shown, and typical sensor/actuator suites for a variety of mission types detailed. A description of the software and hardware test effort will be given, along with an attempt to make some qualitative estimates on how much effort is involved. The spacecraft and GN&C subsystem review cycles will be discussed, giving an outline of what design reviews are typically held and .what information should be presented at each stage. Finally, we will point out some of the lessons learned at Goddard.
Zborowsky, Terri
2014-01-01
The purpose of this paper is to explore nursing research that is focused on the impact of healthcare environments and that has resonance with the aspects of Florence Nightingale's environmental theory. Nurses have a unique ability to apply their observational skills to understand the role of the designed environment to enable healing in their patients. This affords nurses the opportunity to engage in research studies that have immediate impact on the act of nursing. Descriptive statistics were performed on 67 healthcare design-related research articles from 25 nursing journals to discover the topical areas of interest of nursing research today. Data were also analyzed to reveal the research designs, research methods, and research settings. These data are part of an ongoing study. Descriptive statistics reveal that topics and settings most frequently cited are in keeping with the current healthcare foci of patient care quality and safety in acute and intensive care environments. Research designs and methods most frequently cited are in keeping with the early progression of a knowledge area. A few assertions can be made as a result of this study. First, education is important to continue the knowledge development in this area. Second, multiple method research studies should continue to be considered as important to healthcare research. Finally, bedside nurses are in the best position possible to begin to help us all, through research, understand how the design environment impacts patients during the act of nursing. Evidence-based design, literature review, nursing.
NASA Technical Reports Server (NTRS)
Ling, Jerri S.; Kramer, Edward H.
1988-01-01
The Ion Auxiliary Propulsion System (IAPS) experiment is designed for launch on an Air Force Space Test Program satellite (NASA-TM-78859; AIAA Paper No. 78-647). The primary objective of the experiment is to flight qualify the 8 cm mercury ion thruster system for stationkeeping applications. Secondary objectives are measuring the interactions between operating ion thruster systems and host spacecraft, and confirming the design performance of the thruster systems. Two complete 8 cm mercury ion thruster subsystems will be flown. One of these will be operated for 2557 on and off cycles and 7057 hours at full thrust. Tests are currently under way in support of the IAPS flight experiment. In this test an IAPS thruster is being operated through a series of startup/run/shut-down cycles which simulate thruster operation during the planned flight experiment. A test facility description and operational considerations of this testing using an engineering model 8 cm thruster (S/N 905) is the subject of this paper. Final results will be published at a later date when the ground test has been concluded.
Flight experiments to improve terminal area operations
NASA Technical Reports Server (NTRS)
Salmirs, S.; Morello, S. A.
1978-01-01
A brief description is given of the objectives and activities of the terminal configured vehicle (TCV) program and of some of the airborne facilities. A short analysis of some particular problems in CTOL operations in the terminal area is also presented to show how the program's technical objectives are related to the defined problems. The test aircraft was flown both manually and automatically with manual monitoring over paths including 130 deg intercepts and 2.0 km and 0.8 km finals. Some statistical data are presented from these and other flight profiles designed to address specific terminal area problems. An overview is presented of research studies receiving emphasis in the next biennium and their application to the terminal area. A description of work undertaken to study the addition of adjacent traffic information to present map displays is also given.
Flight experiments to improve terminal area operations
NASA Technical Reports Server (NTRS)
Salmirs, S.; Morello, S. A.
1978-01-01
A brief description is given of the objectives and activities of the terminal configured vehicle (TCV) program and of some of the airborne facilities. A short analysis of some particular problems of CTOL operations in the terminal area is also presented to show how the program's technical objectives are related to the defined problems. The test aircraft was flown both manually and automatically with manual monitoring over paths including 130 deg intercepts and 2.0 km (1.1. n. mi.) and 0.8 km (0.44 n. mi.) finals. Some statistical data are presented from these and other flight profiles designed to address specific terminal in the next biennium and their application to the terminal area. A description of work being undertaken to study the addition of adjacent traffic information to present map displays is also given.
30 CFR 250.413 - What must my description of well drilling design criteria address?
Code of Federal Regulations, 2011 CFR
2011-07-01
... design criteria address? 250.413 Section 250.413 Mineral Resources BUREAU OF OCEAN ENERGY MANAGEMENT... must my description of well drilling design criteria address? Your description of well drilling design... drilling and the completion phases, including the anticipated surface pressure used for designing the...
Vehicle infrastructure integration proof of concept : technical description--vehicle : final report
DOT National Transportation Integrated Search
2009-05-19
This report provides the technical description of the VII system developed for the Cooperative Agreement VII Program between the USDOT and the VII Consortium. The basic architectural elements are summarized and detailed descriptions of the hardware a...
Federal Register 2010, 2011, 2012, 2013, 2014
2013-06-10
... Service 9 CFR Part 317 [Docket No. FSIS-2008-0017] RIN 0583-AD45 Descriptive Designation for Needle- or... require the use of the descriptive designation ``mechanically tenderized'' on the labels of raw or...'' products. FSIS is proposing that the product name for such beef products include the descriptive...
NASA Technical Reports Server (NTRS)
Borg, Stephen E.; Harper, Samuel E.
2001-01-01
This paper documents the design and development of the fiber-optic probes utilized in the flame detection systems used in NASA Langley Research Center's 8-Foot High Temperature Tunnel (8-ft HTT). Two independent flame detection systems are utilized to monitor the presence and stability of the main-burner and pilot-level flames during facility operation. Due to the harsh environment within the combustor, the successful development of a rugged and efficient fiber-optic probe was a critical milestone in the development of these flame detection systems. The final optical probe design for the two flame detection systems resulted from research that was conducted in Langley's 7-in High Temperature Pilot Tunnel (7-in HTT). A detailed description of the manufacturing process behind the optical probes used in the 8-ft HTT is provided in Appendix A of this report.
Pydna: a simulation and documentation tool for DNA assembly strategies using python.
Pereira, Filipa; Azevedo, Flávio; Carvalho, Ângela; Ribeiro, Gabriela F; Budde, Mark W; Johansson, Björn
2015-05-02
Recent advances in synthetic biology have provided tools to efficiently construct complex DNA molecules which are an important part of many molecular biology and biotechnology projects. The planning of such constructs has traditionally been done manually using a DNA sequence editor which becomes error-prone as scale and complexity of the construction increase. A human-readable formal description of cloning and assembly strategies, which also allows for automatic computer simulation and verification, would therefore be a valuable tool. We have developed pydna, an extensible, free and open source Python library for simulating basic molecular biology DNA unit operations such as restriction digestion, ligation, PCR, primer design, Gibson assembly and homologous recombination. A cloning strategy expressed as a pydna script provides a description that is complete, unambiguous and stable. Execution of the script automatically yields the sequence of the final molecule(s) and that of any intermediate constructs. Pydna has been designed to be understandable for biologists with limited programming skills by providing interfaces that are semantically similar to the description of molecular biology unit operations found in literature. Pydna simplifies both the planning and sharing of cloning strategies and is especially useful for complex or combinatorial DNA molecule construction. An important difference compared to existing tools with similar goals is the use of Python instead of a specifically constructed language, providing a simulation environment that is more flexible and extensible by the user.
PWR PRELIMINARY DESIGN FOR PL-3
DOE Office of Scientific and Technical Information (OSTI.GOV)
Humphries, G. E.
1962-02-28
The pressurized water reactor preliminary design, the preferred design developed under Phase I of the PL-3 contract, is presented. Plant design criteria, summary of plant selection, plant description, reactor and primary system description, thermal and hydraulic analysis, nuclear analysis, control and instrumentatlon description, shielding description, auxiliary systems, power plant equipment, waste dispusal, buildings and tunnels, services, operation and maintenance, logistics, erection, cost information, and a training program outline are given. (auth)
ERIC Educational Resources Information Center
Georgia Univ., Athens. Coll. of Education.
The institute was designed to provide information and develop some ability in initiating, developing, and evaluating programs for training workers as food service supervisors in post-high school level programs. Organizational details, student and faculty qualifications, a job description and analysis of the food service supervisor occupation are…
Attitude-referenced radiometer study. Part 2: Primary calibration system
NASA Technical Reports Server (NTRS)
Williamson, W. R.; Otte, A. A.
1971-01-01
A primary calibration system, PCS, for infrared radiometers has been developed, built, and tested. The system allows radiometers to be calibrated with less than 1 percent error for use in earth coverage horizon measurements, earth resources surveys, and synoptic meteorological measurement. The final design, fabrication and test of the PCS are reported. A detailed description of the PCS construction is presented, along with the results of a complete series of functional tests. Test to verify the source thermal characteristics, collimator reflectance, and output beam characteristics are described and their results presented.
Shen, Yi; Dai, Wei; Richards, Virginia M
2015-03-01
A MATLAB toolbox for the efficient estimation of the threshold, slope, and lapse rate of the psychometric function is described. The toolbox enables the efficient implementation of the updated maximum-likelihood (UML) procedure. The toolbox uses an object-oriented architecture for organizing the experimental variables and computational algorithms, which provides experimenters with flexibility in experimental design and data management. Descriptions of the UML procedure and the UML Toolbox are provided, followed by toolbox use examples. Finally, guidelines and recommendations of parameter configurations are given.
Skylab thruster attitude control system
NASA Technical Reports Server (NTRS)
Wilmer, G. E., Jr.
1974-01-01
Preflight activities and the Skylab mission support effort for the thruster attitude control system (TACS) are documented. The preflight activities include a description of problems and their solutions encountered in the development, qualification, and flight checkout test programs. Mission support effort is presented as it relates to system performance assessment, real-time problem solving, flight anomalies, and the daily system evaluation. Finally, the detailed flight evaluation is presented for each phase of the mission using system telemetry data. Data assert that the TACS met or exceeded design requirements and fulfilled its assigned mission objectives.
Introduction to nanotechnology: a short course for high school students
NASA Astrophysics Data System (ADS)
Markin, Alexey V.
2016-04-01
This report devoted to presenting results of development and implementation of a short course (4 hours) entitled "Introduction to Nanotechnology" that was specially designed for familiarizing high school students with nanomaterials and nanotechnology. The course contains introduction to nanotechnology, essential definitions, short overview of history, descriptions for various examples of nanomaterials and their classifications, performing demonstration experiments. All these parts of the course are briefly analyzed from pedagogical effectiveness point of view. Finally, results of course testing, problems and perspectives of nano-oriented education at high school are also discussed shortly.
1982-02-01
sediment environ- ment remains anaerobic . Most metals are bound to the organics, sulfides, and particulates of the sediments and would remain...mentioned in the bathymetric description of the general site area. The currents at the site area are below the threshold velocities that typical silt...8217It4.’it i I Page 2 Army Corps of Engineers Jan. 10, 1982 honestly say that the benefits of marathon swimming are based not only on a feeling of
[The need to develop demographic census systems for Latin America].
Silva, A
1987-01-01
The author presents the case for developing new software packages specifically designed to process population census information for Latin America. The focus is on the problems faced by developing countries in handling vast amounts of data in an efficient way. First, the basic methods of census data processing are discussed, then brief descriptions of some of the available software are included. Finally, ways in which data processing programs could be geared toward and utilized for improving the accuracy of Latin American censuses in the 1990s are proposed.
Solar heating and cooling system installed at RKL Controls Company, Lumberton, New Jersey
NASA Technical Reports Server (NTRS)
1981-01-01
The final results of the design and operation of a computer controlled solar heated and cooled 40,000 square foot manufacturing building, sales office, and computer control center/display room are summarized. The system description, test data, major problems and resolutions, performance, operation and maintenance manual, equipment manufacturers' literature, and as-built drawings are presented. The solar system is composed of 6,000 square feet of flat plate collectors, external above ground storage subsystem, controls, absorption chiller, heat recovery, and a cooling tower.
NASA Astrophysics Data System (ADS)
Niswatin, C.; Latief, M. A.; Suharyadi, S.
2018-02-01
This research aims to uncover the fact about engineering students in dealing with composing abstracts for their final projects. The research applies a descriptive qualitative quantitative design. The data were collected through questioners involving 104 engineering students, including the alumni at Politeknik Kota Malang, Indonesia. Furthermore, interviews were carried out to explain the details where necessary to support the primary data. It is found that the common problems faced by engineering students include 1) combining words into sentences, 2) identifying the most appropriate technical terms in engineering, and 3) applying grammar in context. To cope with those difficulties they demanded translation application machines, supported by peer-proofreaders. In addition, they considerably engaged personal tutoring with the lectures more than three times.
ERIC Educational Resources Information Center
Seftor, Neil S.; Calcagno, Juan Carlos
2010-01-01
This final report updates the report "Upward Bound Math-Science: Program Description and Interim Impact Estimates" published in 2007 (Olsen et al. 2007). The 2007 interim report contained descriptive findings from a survey of Upward Bound Math-Science (UBMS) grantees from the late 1990s at the time of the study's initiation and impact estimates…
Fiberglass composite blades for the 2 MW Mod-1 wind turbine generator
NASA Technical Reports Server (NTRS)
Batesole, W. R.
1982-01-01
In mid-1979, NASA contracted with Kaman Aerospace Corporation for the design, manufacture, and ground testing of two 100 foot composite rotor blades intended for operation on the Mod-1 wind turbine. The Mod-1 blades have been completed and are currently stored at the Kaman facility. The design, tooling, fabrication, and testing phases which have been carried out to date, as well as testing still planned are described. Discussed are differences from the 150 foot blade which were introduced for cost and manufacturing improvement purposes. Also included is a description of the lightning protection system installed in the blades, and its development program. Actual costs and manhours expended for Blade No. 2 are provided as a base, along with a projection of costs for the blade in production. Finally, cost drivers are identified relative to future designs.
DOE Office of Scientific and Technical Information (OSTI.GOV)
Lopez, M.A.M.
1995-03-01
Even though the ALARA philosophy was formally implemented in the early 1980`s, to some extent, ALARA considerations already had been incorporated into the design of most commercial equipment and facilities based on experience and engineering development. In Mexico, the design of medical and industrial facilities were based on international recommendations containing those considerations. With the construction of Laguna Verde Nuclear Power Station, formal ALARA groups were created to review some parts of its design, and to prepare the ALARA Program and related procedures necessary for its commercial operation. This paper begins with a brief historical description of ALARA development inmore » Mexico, and then goes on to discuss our regulatory frame in Radiation Protection, some aspects of the ALARA Program, efforts in controlling and reducing of sources of radiation, and finally, future perspectives in the ALARA field.« less
DOE Office of Scientific and Technical Information (OSTI.GOV)
None
1968-12-12
The purpose of this Conceptual Facility Design Description (CFDD) is to provide a technical description of the Inert Gas Cell Examination Facility such that agreement with RDT on a Conceptual Design can be reached . The CFDD also serves to establish a common understanding of the facility concept among all responsible FFTF Project parties including the Architect Engineer and Reactor Designer. Included are functions and design requirements, a physical description of the facility, safety considerations, principles of operation, and maintenance principles.
NASA Technical Reports Server (NTRS)
Peters, C.; Kampe, F. (Principal Investigator)
1980-01-01
The mathematical description and implementation of the statistical estimation procedure known as the Houston integrated spatial/spectral estimator (HISSE) is discussed. HISSE is based on a normal mixture model and is designed to take advantage of spectral and spatial information of LANDSAT data pixels, utilizing the initial classification and clustering information provided by the AMOEBA algorithm. The HISSE calculates parametric estimates of class proportions which reduce the error inherent in estimates derived from typical classify and count procedures common to nonparametric clustering algorithms. It also singles out spatial groupings of pixels which are most suitable for labeling classes. These calculations are designed to aid the analyst/interpreter in labeling patches with a crop class label. Finally, HISSE's initial performance on an actual LANDSAT agricultural ground truth data set is reported.
Spent nuclear fuel project cold vacuum drying facility operations manual
DOE Office of Scientific and Technical Information (OSTI.GOV)
IRWIN, J.J.
This document provides the Operations Manual for the Cold Vacuum Drying Facility (CVDF). The Manual was developed in conjunction with HNF-SD-SNF-SAR-002, Safety Analysis Report for the Cold Vacuum Drying Facility, Phase 2, Supporting Installation of Processing Systems (Garvin 1998) and, the HNF-SD-SNF-DRD-002, 1997, Cold Vacuum Drying Facility Design Requirements, Rev. 3a. The Operations Manual contains general descriptions of all the process, safety and facility systems in the CVDF, a general CVD operations sequence, and has been developed for the SNFP Operations Organization and shall be updated, expanded, and revised in accordance with future design, construction and startup phases of themore » CVDF until the CVDF final ORR is approved.« less
77 FR 37025 - Final Priority: Disability Rehabilitation Research Project-Burn Model Systems Centers
Federal Register 2010, 2011, 2012, 2013, 2014
2012-06-20
... other types of research, including but not limited to, descriptive research, exploratory research, and... interventions research and descriptive research, exploratory research, measures development, or other types of... injury or to conduct other types of research, including but not limited to, descriptive research...
On the pedagogy of pharmacological communication: a study of final semester health science students.
Zetterqvist, Ann; Aronsson, Patrik; Hägg, Staffan; Kjellgren, Karin; Reis, Margareta; Tobin, Gunnar; Booth, Shirley
2015-10-26
There is a need to improve design in educational programmes for the health sciences in general and in pharmacology specifically. The objective of this study was to investigate and problematize pharmacological communication in educational programmes for the health sciences. An interview study was carried out where final semester students from programmes for the medical, nursing and specialist nursing in primary health care professions were asked to discuss the pharmacological aspects of two written case descriptions of the kind they would meet in their everyday work. The study focused on the communication they envisaged taking place on the concerns the patients were voicing, in terms of two features: how communication would take place and what would be the content of the communication. A phenomenographic research approach was used. The results are presented as outcome spaces, sets of categories that describe the variation of ways in which the students voiced their understanding of communication in the two case descriptions and showed the qualitatively distinct ways in which the features of communication were experienced. The results offer a base of understanding the students' perspectives on communication that they will take with them into their professional lives. We indicate that there is room for strengthening communication skills in the field of pharmacology, integrating them into programmes of education, by more widely implementing a problem-based, a case-oriented or role-playing pedagogy where final year students work across specialisations and there is a deliberate effort to evoke and assess advanced conceptions and skills.
Tidd hot gas clean up program. Final report
DOE Office of Scientific and Technical Information (OSTI.GOV)
NONE
This Final Report on the Tidd Hot Gas Clean Up Program covers the period from initial Proof-of-Concept testing in August, 1990, through final equipment inspections in May, 1995. The Tidd Hot Gas Clean Up (HGCU) system was installed in the Tidd Pressurized Fluidized Bed Combustion (PFBC) Demonstration Plant, which is the first utility-scale PFBC plant in the United States. Detailed design work on the project began in July, 1990, and site construction began in December, 1991. Initial operation of the system occurred in May, 1992, and the hot gas filter was commissioned in October, 1992. The test program ended inmore » March, 1995, when the Tidd Plant was shut down following its four-year test program. Section 1.0 of this report is an executive summary of the project covering the project background, system description, test results and conclusions. Section 2.0 is an introduction covering the program objectives and schedule. Section 3.0 provides detailed descriptions of the system and its major components. Section 4.0 provides detailed results of all testing including observations and posttest inspection results. Sections 5.0 and 6.0 list the program conclusions and recommendations, respectively. Appendix I is a report prepared by Southern Research Institute on the properties of Tidd PFBC ash sampled during the test program. Appendix II is a report prepared by Westinghouse STC on the performance of candle filter fail-safe regenerator devices.« less
MECDAS: A distributed data acquisition system for experiments at MAMI
NASA Astrophysics Data System (ADS)
Krygier, K. W.; Merle, K.
1994-02-01
For the coincidence experiments with the three spectrometer setup at MAMI an experiment control and data acquisition system has been built and was put successfully into final operation in 1992. MECDAS is designed as a distributed system using communication via Ethernet and optical links. As the front end, VME bus systems are used for real time purposes and direct hardware access via CAMAC, Fastbus or VMEbus. RISC workstations running UNIX are used for monitoring, data archiving and online and offline analysis of the experiment. MECDAS consists of several fixed programs and libraries, but large parts of readout and analysis can be configured by the user. Experiment specific configuration files are used to generate efficient and powerful code well adapted to special problems without additional programming. The experiment description is added to the raw collection of partially analyzed data to get self-descriptive data files.
Modeling a description logic vocabulary for cancer research.
Hartel, Frank W; de Coronado, Sherri; Dionne, Robert; Fragoso, Gilberto; Golbeck, Jennifer
2005-04-01
The National Cancer Institute has developed the NCI Thesaurus, a biomedical vocabulary for cancer research, covering terminology across a wide range of cancer research domains. A major design goal of the NCI Thesaurus is to facilitate translational research. We describe: the features of Ontylog, a description logic used to build NCI Thesaurus; our methodology for enhancing the terminology through collaboration between ontologists and domain experts, and for addressing certain real world challenges arising in modeling the Thesaurus; and finally, we describe the conversion of NCI Thesaurus from Ontylog into Web Ontology Language Lite. Ontylog has proven well suited for constructing big biomedical vocabularies. We have capitalized on the Ontylog constructs Kind and Role in the collaboration process described in this paper to facilitate communication between ontologists and domain experts. The artifacts and processes developed by NCI for collaboration may be useful in other biomedical terminology development efforts.
DOE Office of Scientific and Technical Information (OSTI.GOV)
NONE
This volume and its appendixes supplement the Advisory Committee`s final report by reporting how we went about looking for information concerning human radiation experiments and intentional releases, a description of what we found and where we found it, and a finding aid for the information that we collected. This volume begins with an overview of federal records, including general descriptions of the types of records that have been useful and how the federal government handles these records. This is followed by an agency-by-agency account of the discovery process and descriptions of the records reviewed, together with instructions on how tomore » obtain further information from those agencies. There is also a description of other sources of information that have been important, including institutional records, print resources, and nonprint media and interviews. The third part contains brief accounts of ACHRE`s two major contemporary survey projects (these are described in greater detail in the final report and another supplemental volume) and other research activities. The final section describes how the ACHRE information-nation collections were managed and the records that ACHRE created in the course of its work; this constitutes a general finding aid for the materials deposited with the National Archives. The appendices provide brief references to federal records reviewed, descriptions of the accessions that comprise the ACHRE Research Document Collection, and descriptions of the documents selected for individual treatment. Also included are an account of the documentation available for ACHRE meetings, brief abstracts of the almost 4,000 experiments individually described by ACHRE staff, a full bibliography of secondary sources used, and other information.« less
NASA Technical Reports Server (NTRS)
Renaud, John E.; Batill, Stephen M.; Brockman, Jay B.
1999-01-01
This research effort is a joint program between the Departments of Aerospace and Mechanical Engineering and the Computer Science and Engineering Department at the University of Notre Dame. The purpose of the project was to develop a framework and systematic methodology to facilitate the application of Multidisciplinary Design Optimization (MDO) to a diverse class of system design problems. For all practical aerospace systems, the design of a systems is a complex sequence of events which integrates the activities of a variety of discipline "experts" and their associated "tools". The development, archiving and exchange of information between these individual experts is central to the design task and it is this information which provides the basis for these experts to make coordinated design decisions (i.e., compromises and trade-offs) - resulting in the final product design. Grant efforts focused on developing and evaluating frameworks for effective design coordination within a MDO environment. Central to these research efforts was the concept that the individual discipline "expert", using the most appropriate "tools" available and the most complete description of the system should be empowered to have the greatest impact on the design decisions and final design. This means that the overall process must be highly interactive and efficiently conducted if the resulting design is to be developed in a manner consistent with cost and time requirements. The methods developed as part of this research effort include; extensions to a sensitivity based Concurrent Subspace Optimization (CSSO) NMO algorithm; the development of a neural network response surface based CSSO-MDO algorithm; and the integration of distributed computing and process scheduling into the MDO environment. This report overviews research efforts in each of these focus. A complete bibliography of research produced with support of this grant is attached.
Team-Based Learning in a Community Health Nursing Course: Improving Academic Outcomes.
Miles, Jane M; Larson, Kim L; Swanson, Melvin
2017-07-01
Population health concepts, such as upstream thinking, present challenging ideas to undergraduate nursing students grounded in an acute care orientation. The purpose of this study was to describe how team-based learning (TBL) influenced academic outcomes in a community health nursing course. A descriptive correlational design examined the relationship among student scores on individual readiness assurance tests (iRATs), team readiness assurance tests (tRATs), and the final examination. The sample included 221 nursing students who had completed the course. A large positive correlation was found between iRAT and final examination scores. For all students, the mean tRAT score was higher than the mean iRAT score. A moderate positive correlation existed between tRAT and final examination scores. The study contributes to understanding the effects of TBL pedagogy on student academic outcomes in nursing education. TBL is a valuable teaching method in a course requiring the application of challenging concepts. [J Nurs Educ. 2017;56(7):425-429.]. Copyright 2017, SLACK Incorporated.
The SNL100-03 Blade: Design Studies with Flatback Airfoils for the Sandia 100-meter Blade.
DOE Office of Scientific and Technical Information (OSTI.GOV)
Griffith, Daniel; Richards, Phillip William
A series of design studies were performed to inv estigate the effects of flatback airfoils on blade performance and weight for large blades using the Sandi a 100-meter blade designs as a starting point. As part of the study, the effects of varying the blade slenderness on blade structural performance was investigated. The advantages and disadvantages of blad e slenderness with respect to tip deflection, flap- wise & edge-wise fatigue resistance, panel buckling capacity, flutter speed, manufacturing labor content, blade total weight, and aerodynamic design load magn itude are quantified. Following these design studies, a final blade design (SNL100-03) wasmore » prod uced, which was based on a highly slender design using flatback airfoils. The SNL100-03 design with flatback airfoils has weight of 49 tons, which is about 16% decrease from its SNL100-02 predecessor that used conventional sharp trailing edge airfoils. Although not systematically optimized, the SNL100 -03 design study provides an assessment of and insight into the benefits of flatback airfoils for la rge blades as well as insights into the limits or negative consequences of high blade slenderness resulting from a highly slender SNL100-03 planform as was chosen in the final design definition. This docum ent also provides a description of the final SNL100-03 design definition and is intended to be a companion document to the distribution of the NuMAD blade model files for SNL100-03, which are made publicly available. A summary of the major findings of the Sandia 100-meter blade development program, from the initial SNL100-00 baseline blade through the fourth SNL100-03 blade study, is provided. This summary includes the major findings and outcomes of blade d esign studies, pathways to mitigate the identified large blade design drivers, and tool development that were produced over the course of this five-year research program. A summary of large blade tec hnology needs and research opportunities is also presented.« less
14 CFR 161.9 - Designation of noise description methods.
Code of Federal Regulations, 2011 CFR
2011-01-01
... 14 Aeronautics and Space 3 2011-01-01 2011-01-01 false Designation of noise description methods... TRANSPORTATION (CONTINUED) AIRPORTS NOTICE AND APPROVAL OF AIRPORT NOISE AND ACCESS RESTRICTIONS General Provisions § 161.9 Designation of noise description methods. For purposes of this part, the following...
14 CFR 161.9 - Designation of noise description methods.
Code of Federal Regulations, 2010 CFR
2010-01-01
... 14 Aeronautics and Space 3 2010-01-01 2010-01-01 false Designation of noise description methods... TRANSPORTATION (CONTINUED) AIRPORTS NOTICE AND APPROVAL OF AIRPORT NOISE AND ACCESS RESTRICTIONS General Provisions § 161.9 Designation of noise description methods. For purposes of this part, the following...
NASA Technical Reports Server (NTRS)
1972-01-01
Major study areas treated in this volume are: 1) operations and control and 2) the telecommunication service system. The TDRS orbit selection, orbital deployment, ground station visibility, sequence of events from launch to final orbit position, and TDRS control center functions required for stationkeeping, repositioning, attitude control, and antenna pointing are briefly treated as part of the operations and control section. The last topic of this section concerns the operations required for efficiently providing the TDRSS user telecommunication services. The discussion treats functions of the GSFC control and data processing facility, ground station, and TDRS control center. The second major portion of this volume deals with the Telecommunication Service System (TSS) which consists of the ground station, TDRS communication equipment and the user transceiver. A summary of the requirements and objectives for the telecommunication services and a brief summary of the TSS capabilities is followed by communication system analysis, signal design, and equipment design. Finally, descriptions of the three TSS elements are presented.
POWER-BURST FACILITY (PBF) CONCEPTUAL DESIGN
DOE Office of Scientific and Technical Information (OSTI.GOV)
Wasserman, A.A.; Johnson, S.O.; Heffner, R.E.
1963-06-21
A description is presented of the conceptual design of a high- performance, pulsed reactor called the Power Burst Facility (PBF). This reactor is designed to generate power bursts with initial asymptotic periods as short as 1 msec, producing energy releases large enough to destroy entire fuel subassemblies placed in a capsule or flow loop mounted in the reactor, all without damage to the reactor itself. It will be used primarily to evaluate the consequences and hazards of very rapid destructive accidents in reactors representing the entire range of current nuclear technology as applied to power generation, propulsion, and testing. Itmore » will also be used to carry out detailed studies of nondestructive reactivity feedback mechanisms in the shortperiod domain. The facility was designed to be sufficiently flexible to accommodate future cores of even more advanced design. The design for the first reactor core is based upon proven technology; hence, completion of the final design of this core will involve no significant development delays. Construction of the PBF is proposed to begin in September 1984, and is expected to take approximately 20 months to complete. (auth)« less
Response of power systems to the San Fernando Valley earthquake of 9 February 1971. Final report
DOE Office of Scientific and Technical Information (OSTI.GOV)
Schiff, A.J.; Yao, J.T.P.
1972-01-01
The impact of the San Fernando Valley earthquake on electric power systems is discussed. Particular attention focused on the following three areas; (1) the effects of an earthquake on the power network in the Western States, (2) the failure of subsystems and components of the power system, and (3) the loss of power to hospitals. The report includes sections on the description and functions of major components of a power network, existing procedures to protect the network, safety devices within the system which influence the network, a summary of the effects of the San Fernando Valley earthquake on the Westernmore » States Power Network, and present efforts to reduce the network vulnerability to faults. Also included in the report are a review of design procedures and practices prior to the San Fernando Valley earthquake and descriptions of types of damage to electrical equipment, dynamic analysis of equipment failures, equipment surviving the San Fernando Valley earthquake and new seismic design specifications. In addition, some observations and insights gained during the study, which are not directly related to power systems are discussed.« less
HZETRN: Description of a free-space ion and nucleon transport and shielding computer program
NASA Technical Reports Server (NTRS)
Wilson, John W.; Badavi, Francis F.; Cucinotta, Francis A.; Shinn, Judy L.; Badhwar, Gautam D.; Silberberg, R.; Tsao, C. H.; Townsend, Lawrence W.; Tripathi, Ram K.
1995-01-01
The high-charge-and energy (HZE) transport computer program HZETRN is developed to address the problems of free-space radiation transport and shielding. The HZETRN program is intended specifically for the design engineer who is interested in obtaining fast and accurate dosimetric information for the design and construction of space modules and devices. The program is based on a one-dimensional space-marching formulation of the Boltzmann transport equation with a straight-ahead approximation. The effect of the long-range Coulomb force and electron interaction is treated as a continuous slowing-down process. Atomic (electronic) stopping power coefficients with energies above a few A MeV are calculated by using Bethe's theory including Bragg's rule, Ziegler's shell corrections, and effective charge. Nuclear absorption cross sections are obtained from fits to quantum calculations and total cross sections are obtained with a Ramsauer formalism. Nuclear fragmentation cross sections are calculated with a semiempirical abrasion-ablation fragmentation model. The relation of the final computer code to the Boltzmann equation is discussed in the context of simplifying assumptions. A detailed description of the flow of the computer code, input requirements, sample output, and compatibility requirements for non-VAX platforms are provided.
CANISTER HANDLING FACILITY DESCRIPTION DOCUMENT
DOE Office of Scientific and Technical Information (OSTI.GOV)
J.F. Beesley
The purpose of this facility description document (FDD) is to establish requirements and associated bases that drive the design of the Canister Handling Facility (CHF), which will allow the design effort to proceed to license application. This FDD will be revised at strategic points as the design matures. This FDD identifies the requirements and describes the facility design, as it currently exists, with emphasis on attributes of the design provided to meet the requirements. This FDD is an engineering tool for design control; accordingly, the primary audience and users are design engineers. This FDD is part of an iterative designmore » process. It leads the design process with regard to the flowdown of upper tier requirements onto the facility. Knowledge of these requirements is essential in performing the design process. The FDD follows the design with regard to the description of the facility. The description provided in this FDD reflects the current results of the design process.« less
2017-05-23
Systems and the NRL Code 5763 Radio Frequency (RF) Stimulator. It includes and covers system descriptions , setup, data collection, and test goals that...6 4. Test Asset Descriptions ...7 4.1. Description of FOXTROT Anti-ship Missile (ASM) Simulator ......................................... 7
Hardware description languages
NASA Technical Reports Server (NTRS)
Tucker, Jerry H.
1994-01-01
Hardware description languages are special purpose programming languages. They are primarily used to specify the behavior of digital systems and are rapidly replacing traditional digital system design techniques. This is because they allow the designer to concentrate on how the system should operate rather than on implementation details. Hardware description languages allow a digital system to be described with a wide range of abstraction, and they support top down design techniques. A key feature of any hardware description language environment is its ability to simulate the modeled system. The two most important hardware description languages are Verilog and VHDL. Verilog has been the dominant language for the design of application specific integrated circuits (ASIC's). However, VHDL is rapidly gaining in popularity.
A New Large-Well 1024x1024 Si:As Detector for the Mid-Infrared
NASA Technical Reports Server (NTRS)
Mainzer, Amanda K.; Hong, John H.; Stapelbroek, M. G.; Hogue, Henry; Molyneux, Dale; Ressler, Michael E.; Watkins, Ernie; Reekstin, John; Werner, Mike; Young, Erick
2005-01-01
We present a description of a new 1024x1024 Si:As array designed for ground-based use from 5 - 28 microns. With a maximum well depth of 5e6 electrons, this device brings large-format array technology to bear on ground-based mid-infrared programs, allowing entry to the mega-pixel realm previously only accessible to the near-IR. The multiplexer design features switchable gain, a 256x256 windowing mode for extremely bright sources, and it is two-edge buttable. The device is currently in its final design phase at DRS in Cypress, CA. We anticipate completion of the foundry run in October 2005. This new array will enable wide field, high angular resolution ground-based follow up of targets found by space-based missions such as the Spitzer Space Telescope and the Wide-field Infrared Survey Explorer (WISE).
The Integration of an API619 Screw Compressor Package into the Industrial Internet of Things
NASA Astrophysics Data System (ADS)
Milligan, W. J.; Poli, G.; Harrison, D. K.
2017-08-01
The Industrial Internet of Things (IIoT) is the industrial subset of the Internet of Things (IoT). IIoT incorporates big data technology, harnessing the instrumentation data, machine to machine communication and automation technologies that have existed in industrial settings for years. As industry in general trends towards the IIoT and as the screw compressor packages developed by Howden Compressors are designed with a minimum design life of 25 years, it is imperative this technology is embedded immediately. This paper provides the reader with a description on the Industrial Internet of Things before moving onto describing the scope of the problem for an organisation like Howden Compressors who deploy multiple compressor technologies across multiple locations and focuses on the critical measurements particular to high specification screw compressor packages. A brief analysis of how this differs from high volume package manufacturers deploying similar systems is offered. Then follows a description on how the measured information gets from the tip of the instrument in the process pipework or drive train through the different layers, with a description of each layer, into the final presentation layer. The functions available within the presentation layer are taken in turn and the benefits analysed with specific focus on efficiency and availability. The paper concludes with how packagers adopting the IIoT can not only optimise their package but by utilising the machine learning technology and pattern detection applications can adopt completely new business models.
Towards an analytical framework for tailoring supercontinuum generation.
Castelló-Lurbe, David; Vermeulen, Nathalie; Silvestre, Enrique
2016-11-14
A fully analytical toolbox for supercontinuum generation relying on scenarios without pulse splitting is presented. Furthermore, starting from the new insights provided by this formalism about the physical nature of direct and cascaded dispersive wave emission, a unified description of this radiation in both normal and anomalous dispersion regimes is derived. Previously unidentified physics of broadband spectra reported in earlier works is successfully explained on this basis. Finally, a foundry-compatible few-millimeters-long silicon waveguide allowing octave-spanning supercontinuum generation pumped at telecom wavelengths in the normal dispersion regime is designed, hence showcasing the potential of this new analytical approach.
Richards, V. M.; Dai, W.
2014-01-01
A MATLAB toolbox for the efficient estimation of the threshold, slope, and lapse rate of the psychometric function is described. The toolbox enables the efficient implementation of the updated maximum-likelihood (UML) procedure. The toolbox uses an object-oriented architecture for organizing the experimental variables and computational algorithms, which provides experimenters with flexibility in experimental design and data management. Descriptions of the UML procedure and the UML Toolbox are provided, followed by toolbox use examples. Finally, guidelines and recommendations of parameter configurations are given. PMID:24671826
Automation of closed environments in space for human comfort and safety
NASA Technical Reports Server (NTRS)
1990-01-01
The results are presented of the first year of a three year project on the automation of the Environmental Control and Life Support System (ECLSS) of the Space Station Freedom (SSF). The results are applicable to other future space mission. The work was done by the Kansas State University NASA/USRA interdisciplinary student design team. The six ECLSS subsystems and how they interact are discussed. Proposed control schemes and their rationale are discussed for the Atmosphere Revitalization (AR) subsystem. Finally, a description of the mathematical models for many components of the ECLSS control system is given.
Performance characterization of the EarthCARE BBR Detectors
NASA Astrophysics Data System (ADS)
Proulx, C.; Allard, M.; Pope, T.; Tremblay, B.; Williamson, F.; Julien, C.; Larouche, C.; Delderfield, J.; Parker, D.
2017-11-01
The Broadband Radiometer (BBR) is an instrument being developed for the ESA EarthCARE satellite. The BBR instrument objective is to provide measurements of the reflected short-wave (0.25-4.0 μm) and emitted long-wave (4.0-50 μm) top of the atmosphere (TOA) radiance over three along-track views (forward, nadir and backward). The instrument has three fixed telescopes, one for each view, each containing a broadband detector. The BBR instrument is led by SEA in the UK with RAL responsible for the BBR optics unit (OU) while EADS Astrium is the EarthCARE prime contractor. A detailed description of the instrument is provided in [1]. The BBR detectors consist in three dedicated assemblies under the responsibility of INO. The detectors development started in 2008 and led to the design and implementation of a new gold black deposition facility at INO [2], in parallel with the preliminary and detailed design phases of the detector assemblies. As of today, two breadboard models and one engineering model have been delivered to RAL. In the BBR OU each detector mechanically interfaces with the telescope and electrically with the front-end electronics (FEE). The detectors' development is now at the Critical Design Review (CDR) level. This paper first provides a description of the detector design along with its principles of operation. It further presents and discusses measurement and analysis results for the performance characterization of the engineering model in the context of the applicable requirements. Detector-level qualification planning is finally discussed.
Description of the control system design for the SSF PMAD DC testbed
NASA Technical Reports Server (NTRS)
Baez, Anastacio N.; Kimnach, Greg L.
1991-01-01
The Power Management and Distribution (PMAD) DC Testbed Control System for Space Station Freedom was developed using a top down approach based on classical control system and conventional terrestrial power utilities design techniques. The design methodology includes the development of a testbed operating concept. This operating concept describes the operation of the testbed under all possible scenarios. A unique set of operating states was identified and a description of each state, along with state transitions, was generated. Each state is represented by a unique set of attributes and constraints, and its description reflects the degree of system security within which the power system is operating. Using the testbed operating states description, a functional design for the control system was developed. This functional design consists of a functional outline, a text description, and a logical flowchart for all the major control system functions. Described here are the control system design techniques, various control system functions, and the status of the design and implementation.
Smart cards: a specific application in the hospital.
Güler, I; Zengin, R M; Sönmez, M
1998-12-01
Computers have the ability to process and access tremendous amounts of information in our daily lives. But, now, individuals have this ability by carrying a smart card in their own wallets. These cards provide us the versatility, power, and security of computers. This study begins with a short description of smart cards and their advantages. Then, an electronic circuit that is designed for healthcare application in hospitals is introduced. This circuit functions as a smart card holder identifier, access controller for hospital doors and also can be used as a smart card reader/writer. Design steps of this electronic circuit, operation principles, serial communication with P.C., and the software are examined. Finally a complete access control network for hospital doors that functions with smart cards is discussed.
Plant engineers solar energy handbook. [Includes glossaries
DOE Office of Scientific and Technical Information (OSTI.GOV)
Not Available
1978-01-21
This handbook is to provide plant engineers with factual information on solar energy technology and on the various methods for assessing the future potential of this alternative energy source. The following areas are covered: solar components and systems (collectors, storage, service hot-water systems, space heating with liquid and air systems, space cooling, heat pumps and controls); computer programs for system optimization local solar and weather data; a description of buildings and plants in the San Francisco Bay Area applying solar technology; current Federal and California solar legislation; standards, codes, and performance testing information; a listing of manufacturers, distributors, and professionalmore » services that are available in Northern California; and information access. Finally, solar design checklists are provided for those engineers who wish to design their own systems. (MHR)« less
NASA Technical Reports Server (NTRS)
Lu, Richard; Chan, Jeffrey
1994-01-01
The original design of the Student Mentored Advanced Research and Technology Satellite (SMARTSat) began in January of 1994. The mission adhered to the guidelines and constraints set forth by the Student Explorer Demonstration Initiative Proposal, which was sponsored by the Universities Space Research Association. This report represents a redesign of that original concept. The main differences include a higher orbit and a three axis stabilization system. Of course, these changes imparted significant effects upon the other subsystems. Outlined in this document are those modifications and it offers some new analyses as well. For each subsystem there is a brief description, followed by relevant design assumptions, a summary of conclusions, and finally all pertinent supporting data and graphs. Towards the end of the report. the important issue of cost is addressed as well. Whenever possible, parametric analyses were made.
Natural language processing: an introduction.
Nadkarni, Prakash M; Ohno-Machado, Lucila; Chapman, Wendy W
2011-01-01
To provide an overview and tutorial of natural language processing (NLP) and modern NLP-system design. This tutorial targets the medical informatics generalist who has limited acquaintance with the principles behind NLP and/or limited knowledge of the current state of the art. We describe the historical evolution of NLP, and summarize common NLP sub-problems in this extensive field. We then provide a synopsis of selected highlights of medical NLP efforts. After providing a brief description of common machine-learning approaches that are being used for diverse NLP sub-problems, we discuss how modern NLP architectures are designed, with a summary of the Apache Foundation's Unstructured Information Management Architecture. We finally consider possible future directions for NLP, and reflect on the possible impact of IBM Watson on the medical field.
Natural language processing: an introduction
Ohno-Machado, Lucila; Chapman, Wendy W
2011-01-01
Objectives To provide an overview and tutorial of natural language processing (NLP) and modern NLP-system design. Target audience This tutorial targets the medical informatics generalist who has limited acquaintance with the principles behind NLP and/or limited knowledge of the current state of the art. Scope We describe the historical evolution of NLP, and summarize common NLP sub-problems in this extensive field. We then provide a synopsis of selected highlights of medical NLP efforts. After providing a brief description of common machine-learning approaches that are being used for diverse NLP sub-problems, we discuss how modern NLP architectures are designed, with a summary of the Apache Foundation's Unstructured Information Management Architecture. We finally consider possible future directions for NLP, and reflect on the possible impact of IBM Watson on the medical field. PMID:21846786
Design and construction of a prototype ACTS propagation terminal
NASA Technical Reports Server (NTRS)
Stutzman, Warren; Pratt, Tim; Nunnally, Charles; Nealy, Randall; Remaklus, Will; Sylvester, Bill; Predoehl, Andrew; Gaff, Doug
1993-01-01
The launch schedule for the Advanced Communication Technology Satellite (ACTS) spacecraft did not leave sufficient time for completion of the prototype ACTS Propagation Terminals (APT) prior to initiation of the APT production phase. In fact, the approach used was to construct and test all subassemblies of the terminal with special emphasis on the technically challenging portions. These include the RF front end that uses a state-of-the-art down converter which integrates a low noise amplifier, mixer, post amplifier, filter, and local oscillator port frequency doubler into a single small package. In addition, a new digital receiver that uses the latest DSP technology was developed. Both of these subassemblies were thoroughly tested. The highest risk technology in the APT program was the digital receiver. Several candidate algorithms and DSP chips were investigated early on, primarily under JPL sponsorship. A receiver was constructed based on Texas Instruments chip. The final prototype digital receiver was one based on an Analog Devices chip. The design and test results are documented in a report prepared for this grant. A Primary Design Review (PDR) was conducted 30 May 1991, and a Critical Design Review was held 7 Jul. 1992. Final complete documentation of the APT's will appear in the form of three reports: a hardware description report, a report on the data collection code (ACTS VIEW), and a report on the preprocessing code.
NASA Technical Reports Server (NTRS)
1991-01-01
NASA's two Office of Space Flight (Code M) Space Transfer Vehicle (STV) contractors supported development of Space Exploration Initiative (SEI) lunar transportation concepts. This work treated lunar SEI missions as the far end of a more near-term STV program, most of whose missions were satellite delivery and servicing requirements derived from Civil Needs Data Base (CNDB) projections. Space Transfer Concepts and Analysis for Exploration Missions (STCAEM) began to address the complete design of a lunar transportation system. The following challenges were addressed: (1) the geometry of aerobraking; (2) accommodation of mixed payloads; (3) cryogenic propellant transfer in Low Lunar Orbit (LLO); (4) fully re-usable design; and (5) growth capability. The leveled requirements, derived requirements, and assumptions applied to the lunar transportation system design are discussed. The mission operations section includes data on mission analysis studies and performance parametrics as well as the operating modes and performance evaluations which include the STCAEM recommendations. Element descriptions for the lunar transportation family included are a listing of the lunar transfer vehicle/lunar excursion vehicle (LTV/LEV) components; trade studies and mass analyses of the transfer and excursion modules; advanced crew recovery vehicle (ACRV) (modified crew recovery vehicle (MCRV)) modifications required to fulfill lunar operations; the aerobrake shape and L/D to be used; and some costing methods and results. Commonality and evolution issues are also discussed.
The climate visualizer: Sense-making through scientific visualization
NASA Astrophysics Data System (ADS)
Gordin, Douglas N.; Polman, Joseph L.; Pea, Roy D.
1994-12-01
This paper describes the design of a learning environment, called the Climate Visualizer, intended to facilitate scientific sense-making in high school classrooms by providing students the ability to craft, inspect, and annotate scientific visualizations. The theoretical back-ground for our design presents a view of learning as acquiring and critiquing cultural practices and stresses the need for students to appropriate the social and material aspects of practice when learning an area. This is followed by a description of the design of the Climate Visualizer, including detailed accounts of its provision of spatial and temporal context and the quantitative and visual representations it employs. A broader context is then explored by describing its integration into the high school science classroom. This discussion explores how visualizations can promote the creation of scientific theories, especially in conjunction with the Collaboratory Notebook, an embedded environment for creating and critiquing scientific theories and visualizations. Finally, we discuss the design trade-offs we have made in light of our theoretical orientation, and our hopes for further progress.
NASA Technical Reports Server (NTRS)
Alvarez, L. S.; Moore, M.; Veruttipong, W.; Andres, E.
1994-01-01
The design and implementation of an antenna beam-waveguide (BWG) mirror position control system at the DSS-13 34-m antenna is presented. While it has several potential applications, a positioner on the last flat-plate BWG mirror (M6) at DSS 13 is installed to demonstrate the conical scan (conscan) angle-tracking technique at the Ka-band (32-GHz) operating frequency. Radio frequency (RF) beam-scanning predictions for the M6 mirror, computed from a diffraction analysis, are presented. From these predictions, position control system requirements are then derived. The final mechanical positioner and servo system designs, as implemented at DSS 13, are illustrated with detailed design descriptions given in the appendices. Preliminary measurements of antenna Ka-band beam scan versus M6 mirror tilt made at DSS 13 in December 1993 are presented. After reduction, the initial measurements are shown to be in agreement with the RF predicts. Plans for preliminary conscan experimentation at DSS 13 are summarized.
A robotically constructed production and supply base on Phobos
NASA Astrophysics Data System (ADS)
1989-05-01
PHOBIA Corporation is involved with the design of a man-tenable robotically constructed, bootstrap base on Mars' moon, Phobos. This base will be a pit-stop for future manned missions to Mars and beyond and will be a control facility during the robotic construction of a Martian base. An introduction is given to the concepts and the ground rules followed during the design process. Details of a base design and its location are given along with information about some of the subsystems. Since a major purpose of the base is to supply fuel to spacecraft so they can limit their fuel mass, mining and production systems are discussed. Surface support activities such as docks, anchors, and surface transportation systems are detailed. Several power supplies for the base are investigated and include fuel cells and a nuclear reactor. Tasks for the robots are defined along with descriptions of the robots capable of completing the tasks. Finally, failure modes for the entire PHOBIA Corporation design are presented along with an effects analysis and preventative recommendations.
A robotically constructed production and supply base on Phobos
NASA Technical Reports Server (NTRS)
1989-01-01
PHOBIA Corporation is involved with the design of a man-tenable robotically constructed, bootstrap base on Mars' moon, Phobos. This base will be a pit-stop for future manned missions to Mars and beyond and will be a control facility during the robotic construction of a Martian base. An introduction is given to the concepts and the ground rules followed during the design process. Details of a base design and its location are given along with information about some of the subsystems. Since a major purpose of the base is to supply fuel to spacecraft so they can limit their fuel mass, mining and production systems are discussed. Surface support activities such as docks, anchors, and surface transportation systems are detailed. Several power supplies for the base are investigated and include fuel cells and a nuclear reactor. Tasks for the robots are defined along with descriptions of the robots capable of completing the tasks. Finally, failure modes for the entire PHOBIA Corporation design are presented along with an effects analysis and preventative recommendations.
SIG Galileo final converter. Technical summary report
DOE Office of Scientific and Technical Information (OSTI.GOV)
Hinderman, J.D.
1979-05-01
The report summarizes significant events, activities and achievements on the SIG/Galileo Converter Program at 3M Company during the period June 1, 1978 through May 15, 1979. A stop work order was received from DOE on January 29, 1979 and all subsequent work and close out activities targeted for completion by May 15, 1979. Section A describes, in detail, the component configurations developed and proposed for the SN-1 converter. This converter was the Flight Design with the possible exception of N-leg improvements and a cold frame-housing interface processing change. Included at the end of the converter description is the status ofmore » the design at the time of the stop work order. In Section B, the activities performed to accomplish the design goals are described as they occurred. Section C lists all pertinent documentation which was developed and issued relating to the design of the converter. This includes drawings, specifications, procedures and analysis. Operating requirements for the SN-1 converter are given.« less
Federal Register 2010, 2011, 2012, 2013, 2014
2013-04-11
... Information Collection: Comment Request; Final Endorsement of Credit Instrument AGENCY: Office of the... Proposal: Final Endorsement of Credit Instrument. OMB Control Number, if applicable: 2502-0016. Description... Endorsement of Credit Instrument'' form is used to request to request final endorsement by HUD of the credit...
Polarized 3He target and Final State Interactions in SiDIS
Del Dotto, Alessio; Kaptari, Leonid; Pace, Emanuele; ...
2017-01-03
Jefferson Lab is starting a wide experimental program aimed at studying the neutron’s structure, with a great emphasis on the extraction of the parton transverse-momentum distributions (TMDs). To this end, Semi-inclusive deep-inelastic scattering (SiDIS) experiments on polarized $^3$He will be carried out, providing, together with proton and deuteron data, a sound flavor decomposition of the TMDs. Here, given the expected high statistical accuracy, it is crucial to disentangle nuclear and partonic degrees of freedom to get an accurate theoretical description of both initial and final states. In this contribution, a preliminary study of the Final State Interaction (FSI) in themore » standard SiDIS, where a pion (or a Kaon) is detected in the final state is presented, in view of constructing a realistic description of the nuclear initial and final states.« less
Interpretive versus didactic learning approach towards oral biology: a student's perspective.
Farooq, Imran
2014-10-01
This study analyzed the preference of dental students for oral biology questions that require either an interpretive or a descriptive approach to answer and to compare the preferences with their final examination result retrospectively. A questionnaire requiring student academic number and containing two questions (one asked with an interpretive approach/the other asked with a descriptive approach) from random topics of oral biology course was distributed among students who have already appeared in the final examination. Majority of the students who had achieved good grades (A+, A, B+, B) preferred interpretive questions whereas majority of the students with average grades (C+, C, D+, D) selected descriptive questions. Common reason for picking interpretive question was that it enhances critical thinking. The descriptive questions were argued to provide students with a chance to explain more. Hence, students should be encouraged to learn interpretively to promote enquiry based learning (EBL) and critical thinking.
Brown, J Lynne; Ping, Yanchao
2003-02-01
To determine whether perceived benefit alters personal risk perception associated with eating genetically engineered soybeans, consumer desire for labeling, preferred phrase on a label symbol, and desired information in an educational brochure. Comparison of responses of two consumer groups who completed one of two survey versions. One hundred fifty supermarket shoppers, age 21 years and older, for each survey or n=300 total. Focus groups and a pilot test were used to develop the final survey in which consumers read a description of a genetically engineered soybean with either no obvious consumer benefit or an obvious consumer benefit and then completed a set of attitude questions and evaluated a voluntary label design and educational brochure content. Main outcome measures were mean opinion scores of personal risk and desire for labeling and ranking of desired label phrase and brochure topics. Chi;(2) and t Tests were used. Consumers reading about the soybean with obvious consumer benefit were significantly more comfortable eating these than those reading about the soybean with no obvious consumer benefit (2.9+/-1.1 vs 3.4+/-1.0, respectively; P=.001). However, the groups did not differ in desire for labeling of foods made with these soybeans or preferred brochure content. They did differ significantly in preferred phrase on the symbol (P=.05). Dietitians can use descriptions of genetic engineering applications such as those in this study to help consumers assess these applications. Dietitians can play a critical role in explaining labeling terms and designing educational materials when the FDA finalizes voluntary labeling regulations for genetically engineered foods.
Launch Vehicle Design Process: Characterization, Technical Integration, and Lessons Learned
NASA Technical Reports Server (NTRS)
Blair, J. C.; Ryan, R. S.; Schutzenhofer, L. A.; Humphries, W. R.
2001-01-01
Engineering design is a challenging activity for any product. Since launch vehicles are highly complex and interconnected and have extreme energy densities, their design represents a challenge of the highest order. The purpose of this document is to delineate and clarify the design process associated with the launch vehicle for space flight transportation. The goal is to define and characterize a baseline for the space transportation design process. This baseline can be used as a basis for improving effectiveness and efficiency of the design process. The baseline characterization is achieved via compartmentalization and technical integration of subsystems, design functions, and discipline functions. First, a global design process overview is provided in order to show responsibility, interactions, and connectivity of overall aspects of the design process. Then design essentials are delineated in order to emphasize necessary features of the design process that are sometimes overlooked. Finally the design process characterization is presented. This is accomplished by considering project technical framework, technical integration, process description (technical integration model, subsystem tree, design/discipline planes, decision gates, and tasks), and the design sequence. Also included in the document are a snapshot relating to process improvements, illustrations of the process, a survey of recommendations from experienced practitioners in aerospace, lessons learned, references, and a bibliography.
Pérez Suárez, Santiago T.; Travieso González, Carlos M.; Alonso Hernández, Jesús B.
2013-01-01
This article presents a design methodology for designing an artificial neural network as an equalizer for a binary signal. Firstly, the system is modelled in floating point format using Matlab. Afterward, the design is described for a Field Programmable Gate Array (FPGA) using fixed point format. The FPGA design is based on the System Generator from Xilinx, which is a design tool over Simulink of Matlab. System Generator allows one to design in a fast and flexible way. It uses low level details of the circuits and the functionality of the system can be fully tested. System Generator can be used to check the architecture and to analyse the effect of the number of bits on the system performance. Finally the System Generator design is compiled for the Xilinx Integrated System Environment (ISE) and the system is described using a hardware description language. In ISE the circuits are managed with high level details and physical performances are obtained. In the Conclusions section, some modifications are proposed to improve the methodology and to ensure portability across FPGA manufacturers.
Validating Future Force Performance Measures (Army Class): Concluding Analyses
2016-06-01
32 Table 3.10. Descriptive Statistics and Intercorrelations for LV Final Predictor Factor Scores...55 Table 4.7. Descriptive Statistics for Analysis Criteria...Soldier attrition and performance: Dependability (Non- Delinquency ), Adjustment, Physical Conditioning, Leadership, Work Orientation, and Agreeableness
NASA Technical Reports Server (NTRS)
Shiva, S. G.; Shah, A. M.
1980-01-01
The details of digital systems can be conveniently input into the design automation system by means of hardware description language (HDL). The computer aided design and test (CADAT) system at NASA MSFC is used for the LSI design. The digital design language (DDL) was selected as HDL for the CADAT System. DDL translator output can be used for the hardware implementation of the digital design. Problems of selecting the standard cells from the CADAT standard cell library to realize the logic implied by the DDL description of the system are addressed.
Understanding Skill in EVA Mass Handling. Volume 2; Empirical Investigation
NASA Technical Reports Server (NTRS)
Riccio, Gary; McDonald, Vernon; Peters, Brian; Layne, Charles; Bloomberg, Jacob
1997-01-01
In this report we describe the details of our empirical protocol effort investigating skill in extravehicular mass handling using NASA's principal mass handling simulator, the precision air bearing floor. Contents of this report include a description of the necessary modifications to the mass handling simulator; choice of task, and the description of an operationally relevant protocol. Our independent variables are presented in the context of the specific operational issues they were designed to simulate. The explanation of our dependent variables focuses on the specific data processing procedures used to transform data from common laboratory instruments into measures that are relevant to a special class of nested control systems (discussed in Volume 1): manual interactions between an individual and the substantial environment. The data reduction is explained in the context of the theoretical foundation described in Volume 1. Finally as a preface to the presentation of the empirical data in Volume 3 of this report series, a set of detailed hypotheses is presented.
NASA Astrophysics Data System (ADS)
Kerst, Stijn; Shyrokau, Barys; Holweg, Edward
2018-05-01
This paper proposes a novel semi-analytical bearing model addressing flexibility of the bearing outer race structure. It furthermore presents the application of this model in a bearing load condition monitoring approach. The bearing model is developed as current computational low cost bearing models fail to provide an accurate description of the more and more common flexible size and weight optimized bearing designs due to their assumptions of rigidity. In the proposed bearing model raceway flexibility is described by the use of static deformation shapes. The excitation of the deformation shapes is calculated based on the modelled rolling element loads and a Fourier series based compliance approximation. The resulting model is computational low cost and provides an accurate description of the rolling element loads for flexible outer raceway structures. The latter is validated by a simulation-based comparison study with a well-established bearing simulation software tool. An experimental study finally shows the potential of the proposed model in a bearing load monitoring approach.
The Sensor Test for Orion RelNav Risk Mitigation Development Test Objective
NASA Technical Reports Server (NTRS)
Christian, John A.; Hinkel, Heather; Maguire, Sean
2011-01-01
The Sensor Test for Orion Relative-Navigation Risk Mitigation (STORRM) Development Test Objective (DTO) ew aboard the Space Shuttle Endeavour on STS-134, and was designed to characterize the performance of the ash LIDAR being developed for the Orion. This ash LIDAR, called the Vision Navigation Sensor (VNS), will be the primary navigation instrument used by the Orion vehicle during rendezvous, proximity operations, and docking. This paper provides an overview of the STORRM test objectives and the concept of operations. It continues with a description of the STORRM's major hardware compo nents, which include the VNS and the docking camera. Next, an overview of crew and analyst training activities will describe how the STORRM team prepared for flight. Then an overview of how insight data collection and analysis actually went is presented. Key ndings and results from this project are summarized, including a description of "truth" data. Finally, the paper concludes with lessons learned from the STORRM DTO.
NASA Astrophysics Data System (ADS)
Yi, X.; Duan, H. L.
2009-08-01
Surface stress is widely used to characterize the adsorption effect on the mechanical response of nanomaterials and nanodevices. However, quantitative relations between continuum-level descriptions of surface stress and molecular-level descriptions of adsorbate interactions are not well established. In this paper, we first obtain the relations between the adsorption-induced surface stress and the van der Waals and Coulomb interactions in terms of the physical and chemical interactions between adsorbates and solid surfaces. Then, we present a theoretical framework to predict the deflection and resonance frequencies of microcantilevers with the simultaneous effects of the eigenstrain, surface stress and adsorption mass. Finally, the adsorption-induced deflection and resonance frequency shift of microcantilevers are numerically analyzed for the van der Waals and Coulomb interactions. The present theoretical framework quantifies the mechanisms of the adsorption-induced surface stress, and thus provides guidelines to the analysis of the sensitivities, and the identification of the detected substance in the design and application of micro- and nanocantilever sensors.
Preflight Adaptation Training for Spatial Orientation and Space Motion Sickness
NASA Technical Reports Server (NTRS)
Harm, Deborah L.; Parker, Donald E.
1994-01-01
Two part-task preflight adaptation trainers (PATs) are being developed at the NASA Johnson Space Center to preadapt astronauts to novel sensory stimulus conditions similar to those present in microgravity to facilitate adaptation to microgravity and readaptation to Earth. This activity is a major component of a general effort to develop countermeasures aimed at minimizing sensory and sensorimotor disturbances and Space Motion Sickness (SMS) associated with adaptation to microgravity and readaptation to Earth. Design principles for the development of the two trainers are discussed, along with a detailed description of both devices. In addition, a summary of four ground-based investigations using one of the trainers to determine the extent to which various novel sensory stimulus conditions produce changes in compensatory eye movement responses, postural equilibrium, motion sickness symptoms, and electrogastric responses are presented. Finally, a brief description of the general concept of dual-adopted states that underly the development of the PATs, and ongoing and future operational and basic research activities are presented.
Gorbaty, Benjamin
2017-10-01
The Civil War influenced all aspects of American society and culture, including the field of medicine and critical care. Union physician Lauramann Howe Russell's letter to his daughter, Ellen Howe, written on October 19, 1862, illustrates the changes in hospital construction, gender roles in healthcare and medical treatments which revolutionized healthcare during the Civil War. This letter offers a glimpse of the medical care of wounded soldiers during the early years of the Civil War. In describing his conversion hospital, he reveals the precursor to the new hospital construction which would greatly influence hospital design for decades to come. His description of women volunteers hints at the evolving role and growing importance of women in healthcare. Finally, the advancements in surgical and medical practice which developed during the Civil War are embodied in Russell's descriptions of his patients. His letter freezes a moment in medical history, bridging the gap between archaic medical practice and modern critical care. Copyright © 2017 Elsevier Inc. All rights reserved.
Atmospheric turbulence simulation for Shuttle orbiter
NASA Technical Reports Server (NTRS)
Tatom, F. B.; Smith, S. R.
1979-01-01
An improved non-recursive model for atmospheric turbulence along the flight path of the Shuttle Orbiter is developed which provides for simulation of instantaneous vertical and horizontal gusts at the vehicle center-of-gravity, and also for simulation of instantaneous gust gradients. Based on this model the time series for both gusts and gust gradients are generated and stored on a series of magnetic tapes. Section 2 provides a description of the various technical considerations associated with the turbulence simulation model. Included in this section are descriptions of the digital filter simulation model, the von Karman spectra with finite upper limits, and the final non recursive turbulence simulation model which was used to generate the time series. Section 2 provides a description of the various technical considerations associated with the turbulence simulation model. Included in this section are descriptions of the digial filter simulation model, the von Karman spectra with finite upper limits, and the final non recursive turbulence simulation model which was used to generate the time series. Section 3 provides a description of the time series as currently recorded on magnetic tape. Conclusions and recommendations are presented in Section 4.
30 CFR 250.413 - What must my description of well drilling design criteria address?
Code of Federal Regulations, 2010 CFR
2010-07-01
... design criteria address? 250.413 Section 250.413 Mineral Resources MINERALS MANAGEMENT SERVICE... drilling design criteria address? Your description of well drilling design criteria must address: (a) Pore... phases, including the anticipated surface pressure used for designing the production string; (g) A single...
30 CFR 250.413 - What must my description of well drilling design criteria address?
Code of Federal Regulations, 2013 CFR
2013-07-01
... design criteria address? 250.413 Section 250.413 Mineral Resources BUREAU OF SAFETY AND ENVIRONMENTAL... of well drilling design criteria address? Your description of well drilling design criteria must... the completion phases, including the anticipated surface pressure used for designing the production...
30 CFR 250.413 - What must my description of well drilling design criteria address?
Code of Federal Regulations, 2012 CFR
2012-07-01
... design criteria address? 250.413 Section 250.413 Mineral Resources BUREAU OF SAFETY AND ENVIRONMENTAL... of well drilling design criteria address? Your description of well drilling design criteria must... the completion phases, including the anticipated surface pressure used for designing the production...
30 CFR 250.413 - What must my description of well drilling design criteria address?
Code of Federal Regulations, 2014 CFR
2014-07-01
... design criteria address? 250.413 Section 250.413 Mineral Resources BUREAU OF SAFETY AND ENVIRONMENTAL... of well drilling design criteria address? Your description of well drilling design criteria must... the completion phases, including the anticipated surface pressure used for designing the production...
Modern steels at atomic and nanometre scales
Caballero, F. G.; Garcia-Mateo, C.; Miller, M. K.
2014-10-10
Processing bulk nanocrystalline materials for structural applications still poses a difficult challenge, particularly in achieving an industrially viable process. Recent work in ferritic steels has proved that it is possible to move from ultrafine to nanoscale by exploiting the bainite reaction without the use of severe deformation, rapid heat treatment or mechanical processing. This new generation of steels has been designed in which transformation at low temperature leads to a nanoscale structure consisting of extremely fine, 20–40 nm thick plates of bainitic ferrite and films of retained austenite. Finally, a description of the characteristics and significance of this remarkable microstructuremore » is provided here.« less
Research of TREETOPS Structural Dynamics Controls Simulation Upgrade
NASA Technical Reports Server (NTRS)
Yates, Rose M.
1996-01-01
Under the provisions of contract number NAS8-40194, which was entitled 'TREETOPS Structural Dynamics and Controls Simulation System Upgrade', Oakwood College contracted to produce an upgrade to the existing TREETOPS suite of analysis tools. This suite includes the main simulation program, TREETOPS, two interactive preprocessors, TREESET and TREEFLX, an interactive post processor, TREEPLOT, and an adjunct program, TREESEL. A 'Software Design Document', which provides descriptions of the argument lists and internal variables for each subroutine in the TREETOPS suite, was established. Additionally, installation guides for both DOS and UNIX platforms were developed. Finally, updated User's Manuals, as well as a Theory Manual, were generated.
NASA Technical Reports Server (NTRS)
1991-01-01
This document presents trade studies and reference concept designs accomplished during a study of Space Transfer Concepts and Analyses for Exploration Missions (STCAEM). This volume contains the major top level trades, level 2 trades conducted in support of NASA's Lunar/Mars Exploration Program Office, and a synopsis of the vehicles for different propulsion systems under trade consideration. The vehicles are presented in more detail in other volumes of this report. Book 1 of Volume 1 covers the following analyses: lunar/Mars commonality trades, lunar/Mars mission operations, and Mars transfer systems.
Identification and robust control of an experimental servo motor.
Adam, E J; Guestrin, E D
2002-04-01
In this work, the design of a robust controller for an experimental laboratory-scale position control system based on a dc motor drive as well as the corresponding identification and robust stability analysis are presented. In order to carry out the robust design procedure, first, a classic closed-loop identification technique is applied and then, the parametrization by internal model control is used. The model uncertainty is evaluated under both parametric and global representation. For the latter case, an interesting discussion about the conservativeness of this description is presented by means of a comparison between the uncertainty disk and the critical perturbation radius approaches. Finally, conclusions about the performance of the experimental system with the robust controller are discussed using comparative graphics of the controlled variable and the Nyquist stability margin as a robustness measurement.
Uncertainty-enabled design of electromagnetic reflectors with integrated shape control
NASA Astrophysics Data System (ADS)
Haque, Samiul; Kindrat, Laszlo P.; Zhang, Li; Mikheev, Vikenty; Kim, Daewa; Liu, Sijing; Chung, Jooyeon; Kuian, Mykhailo; Massad, Jordan E.; Smith, Ralph C.
2018-03-01
We implemented a computationally efficient model for a corner-supported, thin, rectangular, orthotropic polyvinylidene fluoride (PVDF) laminate membrane, actuated by a two-dimensional array of segmented electrodes. The laminate can be used as shape-controlled electromagnetic reflector and the model estimates the reflector's shape given an array of control voltages. In this paper, we describe a model to determine the shape of the laminate for a given distribution of control voltages. Then, we investigate the surface shape error and its sensitivity to the model parameters. Subsequently, we analyze the simulated deflection of the actuated bimorph using a Zernike polynomial decomposition. Finally, we provide a probabilistic description of reflector performance using statistical methods to quantify uncertainty. We make design recommendations for nominal parameter values and their tolerances based on optimization under uncertainty using multiple methods.
Improved self-contained breathing apparatus concept. Final report Oct 80-Jun 82
DOE Office of Scientific and Technical Information (OSTI.GOV)
White, L.; Walker, J.
1982-08-01
Past operational experiences of USAF fire fighting and rescue teams have indicated the need for an improved self-contained breathing apparatus (SCBA). In October 1980, a contract was awarded to Electronic Data Systems, Panama City, Florida, to design and develop a prototype SCBA that would meet Air Force technical requirements. A prototype was designed, developed, and tested through a subcontract with Reimers Consultants, Falls Church, Virginia. This report describes the technical requirements, a detailed technical description of the unit, and the unmanned test procedures and results. The unmanned testing demonstrate that the prototype SCBA meets all performance requirements, except for weight.more » The fully charged prototype weights 34 pounds, the maximum acceptable weight is 30 pounds. With the other performance requirements either met or exceeded, manned testing of the SCBA can proceed.« less
Study of Alternate Space Shuttle Concepts. Volume 2. Part 1: Concept Analysis and Definition
NASA Technical Reports Server (NTRS)
1971-01-01
Three different space shuttle systems have been defined and analyzed. The first is a stage-and-one-half system optimized to meet program requirements. The second is a two-stage, fully reusable system also designed to meet program requirements. The third is a convertible system which operates initially as a stage-and-one-half system and is subsequently converted to a two-stage, fully reusable system by reconfiguration of the orbiter vehicle and development of a booster vehicle. The design and performance of this third system must necessarily be compromised somewhat to facilitate the conversion. For each system, the applicable requirements, ground rules, and assumptions are defined. The characteristics of each system are listed and a detailed description and analysis of the system are presented. Finally, a cost analysis for the system is given.
NASA Technical Reports Server (NTRS)
Simon, Matthew A.; Toups, Larry
2014-01-01
Increased public awareness of carbon footprints, crowding in urban areas, and rising housing costs have spawned a 'small house movement' in the housing industry. Members of this movement desire small, yet highly functional residences which are both affordable and sensitive to consumer comfort standards. In order to create comfortable, minimum-volume interiors, recent advances have been made in furniture design and approaches to interior layout that improve both space utilization and encourage multi-functional design for small homes, apartments, naval, and recreational vehicles. Design efforts in this evolving niche of terrestrial architecture can provide useful insights leading to innovation and efficiency in the design of space habitats for future human space exploration missions. This paper highlights many of the cross-cutting architectural solutions used in small space design which are applicable to the spacecraft interior design problem. Specific solutions discussed include reconfigurable, multi-purpose spaces; collapsible or transformable furniture; multi-purpose accommodations; efficient, space saving appliances; stowable and mobile workstations; and the miniaturization of electronics and computing hardware. For each of these design features, descriptions of how they save interior volume or mitigate other small space issues such as confinement stress or crowding are discussed. Finally, recommendations are provided to provide guidance for future designs and identify potential collaborations with the small spaces design community.
Design guidelines for wind-resistant structures
DOE Office of Scientific and Technical Information (OSTI.GOV)
McDonald, J.R.; Mehta, K.C.; Minor, J.E.
1975-06-01
The purpose of this document is to prescribe criteria and to provide guidance for professional personnel who are involved in the design and evaluation of buildings and structures to resist tornadoes and extreme winds at the Oak Ridge, Tennessee, Portsmouth, Ohio, and Paducah, Kentucky, Plant Sites. The scope of the document covers loads due to extreme winds and tornadoes. Other loading conditions such as dead, live, or earthquake loads shall be considered as prescribed by the Union Carbide Corporation. In Section II the method for determining the maximum design windspeed for any specified level of risk is described. The straightmore » wind and tornado parameters are then deduced from the value of maximum design windspeed. The three types of tornado and extreme wind loads (aerodynamic, atmospheric pressure change and missiles) are treated in Sections III, IV, and V, respectively. Appropriate load combinations are defined in Section VI. The final section contains several examples showing how the design guidelines are used to determine appropriate design wind pressures. A description of the computer program used to predict missile accelerations, velocities and trajectories is contained in Appendix A. Additional design examples are provided in Appendix B.« less
Review of bilayer tablet technology.
Abebe, Admassu; Akseli, Ilgaz; Sprockel, Omar; Kottala, Niranjan; Cuitiño, Alberto M
2014-01-30
Therapeutic strategies based on oral delivery of bilayer (and multilayer) tablets are gaining more acceptance among brand and generic products due to a confluence of factors including advanced delivery strategies, patient compliance and combination therapy. Successful manufacturing of these ever more complex systems needs to overcome a series of challenges from formulation design to tablet press monitoring and control. This article provides an overview of the state-of-the-art of bilayer tablet technology, highlighting the main benefits of this type of oral dosage forms while providing a description of current challenges and advances toward improving manufacturing practices and product quality. Several aspects relevant to bilayer tablet manufacturing are addressed including material properties, lubrication, layer ordering, layer thickness, layer weight control, as well as first and final compression forces. A section is also devoted to bilayer tablet characterization that present additional complexities associated with interfaces between layers. The available features of the manufacturing equipment for bilayer tablet production are also described indicating the different strategies for sensing and controls offered by bilayer tablet press manufacturers. Finally, a roadmap for bilayer tablet manufacturing is advanced as a guideline to formulation design and selection of process parameters and equipment. Copyright © 2013 Elsevier B.V. All rights reserved.
Landsat-7 Simulation and Testing Environments
NASA Technical Reports Server (NTRS)
Holmes, E.; Ha, K.; Hawkins, K.; Lombardo, J.; Ram, M.; Sabelhaus, P.; Scott, S.; Phillips, R.
1999-01-01
A spacecraft Attitude Control and Determination Subsystem (ACDS) is heavily dependent upon simulation throughout its entire development, implementation and ground test cycle. Engineering simulation tools are typically developed to design and analyze control systems to validate the design and software simulation tools are required to qualify the flight software. However, the need for simulation does not end here. Operating the ACDS of a spacecraft on the ground requires the simulation of spacecraft dynamics, disturbance modeling and celestial body motion. Sensor data must also be simulated and substituted for actual sensor data on the ground so that the spacecraft will respond by sending commands to the actuators as they will on orbit. And finally, the simulators is the primary training tool and test-bed for the Flight Operations Team. In this paper various ACDS simulation, developed for or used by the Landsat 7 project will be described. The paper will include a description of each tool, its unique attributes, and its role in the overall development and testing of the ACDS. Finally, a section is included which discusses how the coordinated use of these simulation tools can maximize the probability of uncovering software, hardware and operations errors during the ground test process.
Plutonium Immobilization Project System Design Description for Can Loading System
DOE Office of Scientific and Technical Information (OSTI.GOV)
Kriikku, E.
2001-02-15
The purpose of this System Design Description (SDD) is to specify the system and component functions and requirements for the Can Loading System and provide a complete description of the system (design features, boundaries, and interfaces), principles of operation (including upsets and recovery), and the system maintenance approach. The Plutonium Immobilization Project (PIP) will immobilize up to 13 metric tons (MT) of U.S. surplus weapons usable plutonium materials.
Structure and Management of an Engineering Senior Design Course.
Tanaka, Martin L; Fischer, Kenneth J
2016-07-01
The design of products and processes is an important area in engineering. Students in engineering schools learn fundamental principles in their courses but often lack an opportunity to apply these methods to real-world problems until their senior year. This article describes important elements that should be incorporated into a senior capstone design course. It includes a description of the general principles used in engineering design and a discussion of why students often have difficulty with application and revert to trial and error methods. The structure of a properly designed capstone course is dissected and its individual components are evaluated. Major components include assessing resources, identifying projects, establishing teams, understanding requirements, developing conceptual designs, creating detailed designs, building prototypes, testing performance, and final presentations. In addition to the course design, team management and effective mentoring are critical to success. This article includes suggested guidelines and tips for effective design team leadership, attention to detail, investment of time, and managing project scope. Furthermore, the importance of understanding business culture, displaying professionalism, and considerations of different types of senior projects is discussed. Through a well-designed course and proper mentoring, students will learn to apply their engineering skills and gain basic business knowledge that will prepare them for entry-level positions in industry.
NASA Astrophysics Data System (ADS)
Spencer, Harvey
2002-09-01
Helicopter mounted optical systems require compact packaging, good image performance (approaching the diffraction-limit), and must survive and operate in a rugged shock and thermal environment. The always-present requirement for low weight in an airborne sensor is paramount when considering the optical configuration. In addition, the usual list of optical requirements which must be satisfied within narrow tolerances, including field-of-view, vignetting, boresight, stray light rejection, and transmittance drive the optical design. It must be determined early in the engineering process which internal optical alignment adjustment provisions must be included, which may be included, and which will have to be omitted, since adding alignment features often conflicts with the requirement for optical component stability during operation and of course adds weight. When the system is to be modular and mates with another optical system, a telescope designed by different contractor in this case, additional alignment requirements between the two systems must be specified and agreed upon. Final delivered cost is certainly critical and "touch labor" assembly time must be determined and controlled. A clear plan for the alignment and assembly steps must be devised before the optical design can even begin to ensure that an arrangement of optical components amenable to adjustment is reached. The optical specification document should be written contemporaneously with the alignment plan to insure compatibility. The optics decisions that led to the success of this project are described and the final optical design is presented. A description of some unique pupil alignment adjustments, never performed by us in the infrared, is described.
DOE Office of Scientific and Technical Information (OSTI.GOV)
ALLIANCE LIMITED, NGNP INDUSTRY
This report provides a description of the project, summarizes each phase of the project, and ends with project conclusions. In addition, the report contains a descriptive index of the technical reports generated during the course of the project.
Brügger, Urs; Horisberger, Bruno; Ruckstuhl, Alexander; Plessow, Rafael; Eichler, Klaus; Gratwohl, Alois
2015-01-01
Objectives To identify factors associated with the decisions of the Federal Department of Home Affairs concerning coverage with evidence development (CED) for contested novel medical technologies in Switzerland. Design Quantitative, retrospective, descriptive analysis of publicly available material and prospective, structured, qualitative interviews with key stakeholders. Setting All 152 controversial medical services decided on by the Federal Commission on Health Insurance Benefits within the framework of the new federal law on health insurance in Switzerland from 1997 to 2013, with focus on 33 technologies assigned initially to CED and 33 to evidence development without coverage. Main outcome measures Factors associated with numbers and type of contested services assigned to CED per year, the duration and final outcome of the evaluations and perceptions of key stakeholders. Results The rate of CED decisions (82 total; median 1.5/year; range 0–9/year), the time to final decision (4.5 years median; 0.75 to +11 years) and the probability of a final ‘yes’ varied over time. In logistic regression models, the change of office of the commission provided the best explanation for the observed outcomes. Good intentions but absence of scientific criteria for decisions were reported as major comments by the stakeholders. Conclusions The introduction of CED enabled access to some promising technologies early in their life cycle, and might have triggered establishment of registries and research. Impact on patients’ outcome and costs remain unknown. The primary association of institutional changes with measured end points illustrates the need for evaluation of the current health technology assessment (HTA) system. PMID:25818273
An integrated database with system optimization and design features
NASA Technical Reports Server (NTRS)
Arabyan, A.; Nikravesh, P. E.; Vincent, T. L.
1992-01-01
A customized, mission-specific relational database package was developed to allow researchers working on the Mars oxygen manufacturing plant to enter physical description, engineering, and connectivity data through a uniform, graphical interface and to store the data in formats compatible with other software also developed as part of the project. These latter components include an optimization program to maximize or minimize various criteria as the system evolves into its final design; programs to simulate the behavior of various parts of the plant in Martian conditions; an animation program which, in different modes, provides visual feedback to designers and researchers about the location of and temperature distribution among components as well as heat, mass, and data flow through the plant as it operates in different scenarios; and a control program to investigate the stability and response of the system under different disturbance conditions. All components of the system are interconnected so that changes entered through one component are reflected in the others.
Object linking in repositories
NASA Technical Reports Server (NTRS)
Eichmann, David (Editor); Beck, Jon; Atkins, John; Bailey, Bill
1992-01-01
This topic is covered in three sections. The first section explores some of the architectural ramifications of extending the Eichmann/Atkins lattice-based classification scheme to encompass the assets of the full life cycle of software development. A model is considered that provides explicit links between objects in addition to the edges connecting classification vertices in the standard lattice. The second section gives a description of the efforts to implement the repository architecture using a commercially available object-oriented database management system. Some of the features of this implementation are described, and some of the next steps to be taken to produce a working prototype of the repository are pointed out. In the final section, it is argued that design and instantiation of reusable components have competing criteria (design-for-reuse strives for generality, design-with-reuse strives for specificity) and that providing mechanisms for each can be complementary rather than antagonistic. In particular, it is demonstrated how program slicing techniques can be applied to customization of reusable components.
Salcedo-Diego, Isabel; de Andrés-Gimeno, Begoña; Ruiz-Antorán, Belén; Layunta, Rocío; Serrano-Gallardo, Pilar
To design and perform a face and content validation of a questionnaire to measure the competence of hospital RN to report medication incidents. Content and face questionnaire validation descriptive study. A review of the literature was performed for the creation of ítems. A panel of six experts assessed the relevance of the inclusion of each ítem in the questionnaire by calculating the position index; ítems with position index >0.70 were selected. The questionnaire was piloted by 59 RN. Finally, a meeting was convened with experts, in order to reduce the length of the piloted questionnaire through review, discussion and decision by consensus on each item. From the literature review, a battery of 151 ítems grouped into three elements of competence: attitudes, knowledge and skills was created. 52.9% (n=80) of the ítems received a position index > 0.70. The response rate in the pilot study was 40.65%. The median time to complete the questionnaire was 23:35minutes. After reduction by the experts, the final questionnaire comprised 45 ítems grouped into 32 questions. The NORMA questionnaire, designed to explore the competence of hospital RN to report medication incidents, has adequate face and content validity and is easy to administer, enabling its institutional implementation. Copyright © 2017 Elsevier España, S.L.U. All rights reserved.
Age-related differences in communication and audience design.
Horton, William S; Spieler, Daniel H
2007-06-01
This article reports an experiment examining the extent to which younger and older speakers engage in audience design, the process of adapting one's speech for particular addresses. Through an initial card-matching task, pairs of younger adults and pairs of older adults established common ground for sets of picture cards. Subsequently, the same individuals worked separately on a computer-based picture-description task that involved a novel partner-cuing paradigm. Younger speakers' descriptions to the familiar partner were shorter and were initiated more quickly than were descriptions to an unfamiliar partner. In addition, younger speakers' descriptions to the familiar partner exhibited a higher proportion of lexical overlap with previous descriptions than did descriptions to an unfamiliar partner. Older speakers showed no equivalent evidence for audience design, which may reflect difficulties with retrieving partner-specific information from memory during conversation. ((c) 2007 APA, all rights reserved).
New Approaches to HSCT Multidisciplinary Design and Optimization
NASA Technical Reports Server (NTRS)
Schrage, D. P.; Craig, J. I.; Fulton, R. E.; Mistree, F.
1996-01-01
The successful development of a capable and economically viable high speed civil transport (HSCT) is perhaps one of the most challenging tasks in aeronautics for the next two decades. At its heart it is fundamentally the design of a complex engineered system that has significant societal, environmental and political impacts. As such it presents a formidable challenge to all areas of aeronautics, and it is therefore a particularly appropriate subject for research in multidisciplinary design and optimization (MDO). In fact, it is starkly clear that without the availability of powerful and versatile multidisciplinary design, analysis and optimization methods, the design, construction and operation of im HSCT simply cannot be achieved. The present research project is focused on the development and evaluation of MDO methods that, while broader and more general in scope, are particularly appropriate to the HSCT design problem. The research aims to not only develop the basic methods but also to apply them to relevant examples from the NASA HSCT R&D effort. The research involves a three year effort aimed first at the HSCT MDO problem description, next the development of the problem, and finally a solution to a significant portion of the problem.
A Computational Workflow for the Automated Generation of Models of Genetic Designs.
Misirli, Göksel; Nguyen, Tramy; McLaughlin, James Alastair; Vaidyanathan, Prashant; Jones, Timothy S; Densmore, Douglas; Myers, Chris; Wipat, Anil
2018-06-05
Computational models are essential to engineer predictable biological systems and to scale up this process for complex systems. Computational modeling often requires expert knowledge and data to build models. Clearly, manual creation of models is not scalable for large designs. Despite several automated model construction approaches, computational methodologies to bridge knowledge in design repositories and the process of creating computational models have still not been established. This paper describes a workflow for automatic generation of computational models of genetic circuits from data stored in design repositories using existing standards. This workflow leverages the software tool SBOLDesigner to build structural models that are then enriched by the Virtual Parts Repository API using Systems Biology Open Language (SBOL) data fetched from the SynBioHub design repository. The iBioSim software tool is then utilized to convert this SBOL description into a computational model encoded using the Systems Biology Markup Language (SBML). Finally, this SBML model can be simulated using a variety of methods. This workflow provides synthetic biologists with easy to use tools to create predictable biological systems, hiding away the complexity of building computational models. This approach can further be incorporated into other computational workflows for design automation.
DOE Office of Scientific and Technical Information (OSTI.GOV)
Biancardi, F.R.; Michels, H.H.; Sienel, T.H.
1996-10-01
The purpose of this program was to conduct experimental and analytical efforts to determine lubricant circulation characteristics of new HFC/POE pairs and HFC/mineral oil pairs in a representative central residential HVAC system and to compare their behavior with the traditional HCFC-22/mineral oil (refrigerant/lubricant) pair. A dynamic test facility was designed and built to conduct the experimental efforts. This facility provided a unique capability to visually and physically measure oil circulation rates, on-line, in operating systems. A unique on-line ultraviolet-based measurement device was used to obtain detailed data on the rate and level of lubricant oil circulated within the operating heatmore » pump system. The experimental and analytical data developed during the program are presented as a function of vapor velocity, refrigerant/lubricant viscosity, system features and equipment. Both visual observations and instrumentation were used to understand ``worst case`` oil circulation situations. This report is presented in two volumes. Volume 1 contains a complete description of the program scope, objective, test results summary, conclusions, description of test facility and recommendations for future effort. Volume 2 contains all of the program test data essentially as taken from the laboratory dynamic test facility during the sequence of runs.« less
Characteristics of Qualitative Descriptive Studies: A Systematic Review
Kim, Hyejin; Sefcik, Justine S.; Bradway, Christine
2016-01-01
Qualitative description (QD) is a term that is widely used to describe qualitative studies of health care and nursing-related phenomena. However, limited discussions regarding QD are found in the existing literature. In this systematic review, we identified characteristics of methods and findings reported in research articles published in 2014 whose authors identified the work as QD. After searching and screening, data were extracted from the sample of 55 QD articles and examined to characterize research objectives, design justification, theoretical/philosophical frameworks, sampling and sample size, data collection and sources, data analysis, and presentation of findings. In this review, three primary findings were identified. First, despite inconsistencies, most articles included characteristics consistent with limited, available QD definitions and descriptions. Next, flexibility or variability of methods was common and desirable for obtaining rich data and achieving understanding of a phenomenon. Finally, justification for how a QD approach was chosen and why it would be an appropriate fit for a particular study was limited in the sample and, therefore, in need of increased attention. Based on these findings, recommendations include encouragement to researchers to provide as many details as possible regarding the methods of their QD study so that readers can determine whether the methods used were reasonable and effective in producing useful findings. PMID:27686751
Empirical data and moral theory. A plea for integrated empirical ethics.
Molewijk, Bert; Stiggelbout, Anne M; Otten, Wilma; Dupuis, Heleen M; Kievit, Job
2004-01-01
Ethicists differ considerably in their reasons for using empirical data. This paper presents a brief overview of four traditional approaches to the use of empirical data: "the prescriptive applied ethicists," "the theorists," "the critical applied ethicists," and "the particularists." The main aim of this paper is to introduce a fifth approach of more recent date (i.e. "integrated empirical ethics") and to offer some methodological directives for research in integrated empirical ethics. All five approaches are presented in a table for heuristic purposes. The table consists of eight columns: "view on distinction descriptive-prescriptive sciences," "location of moral authority," "central goal(s)," "types of normativity," "use of empirical data," "method," "interaction empirical data and moral theory," and "cooperation with descriptive sciences." Ethicists can use the table in order to identify their own approach. Reflection on these issues prior to starting research in empirical ethics should lead to harmonization of the different scientific disciplines and effective planning of the final research design. Integrated empirical ethics (IEE) refers to studies in which ethicists and descriptive scientists cooperate together continuously and intensively. Both disciplines try to integrate moral theory and empirical data in order to reach a normative conclusion with respect to a specific social practice. IEE is not wholly prescriptive or wholly descriptive since IEE assumes an interdepence between facts and values and between the empirical and the normative. The paper ends with three suggestions for consideration on some of the future challenges of integrated empirical ethics.
NASA's Space Environments and Effects Program: Technology for the New Millennium
NASA Technical Reports Server (NTRS)
Hardage, Donna M.; Pearson, Steven D.
2000-01-01
Current trends in spacecraft development include the use of advanced technologies while maintaining the "faster, better, cheaper" philosophy. Spacecraft designers are continually designing with smaller and faster electronics as well as lighter and thinner materials providing better performance, lower weight, and ultimately lower costs. Given this technology trend, spacecraft will become increasingly susceptible to the harsh space environments, causing damaging or even disabling effects on space systems. NASA's Space Environments and Effects (SEE) Program defines the space environments and provides advanced technology development to support the design, development, and operation of spacecraft systems that will accommodate or mitigate effects due to the harsh space environments. This Program provides a comprehensive and focused approach to understanding the space environment, to define the best techniques for both flight and ground-based experimentation, to update the models which predict both the environments and the environmental effects on spacecraft, and finally to ensure that this multitudinous information is properly maintained and inserted into spacecraft design programs. A description of the SEE Program, its accomplishments, and future activities is provided.
NASA Astrophysics Data System (ADS)
Lizon, Jean Louis; Klein, Barbara; Oliva, Ernesto; Löwinger, Tom; Anglada Escude, Guillem; Baade, Dietrich; Bristow, Paul; Dorn, Reinhold J.; Follert, Roman; Grunhut, Jason; Hatzes, Artie; Heiter, Ulrike; Ives, Derek; Jung, Yves; Kerber, Florian; Lockhart, Matt; Marquart, Thomas; Origlia, Livia; Pasquini, Luca; Paufique, Jerome; Piskunov, N.; Pozna, Eszter; Reiners, Ansgar; Smette, Alain; Smoker, Jonathan; Seemann, Ulf; Stempels, Eric; Valenti, Elena
2014-07-01
CRIRES is one of the few IR (0.92-5.2 μm) high-resolution spectrographs in operation at the VLT since 2006. Despite good performance it suffers a limitation that significantly hampers its ability: a small spectral coverage per exposure. The CRIRES upgrade (CRIRES+) proposes to transform CRIRES into a cross-dispersed spectrograph while maintaining the high resolution (100000) and increasing the wavelength coverage by a factor 10 compared to the current capabilities. A major part of the upgrade is the exchange of the actual cryogenic pre-disperser module by a new cross disperser unit. In addition to a completely new optical design, a number of important changes are required on key components and functions like the slit unit and detectors units. We will outline the design of these new units fitting inside a predefined and restricted space. The mechanical design of the new functions including a description and analysis will be presented. Finally we will present the strategy for the implementation of the changes.
Engineering Aerothermal Analysis for X-34 Thermal Protection System Design
NASA Technical Reports Server (NTRS)
Wurster, Kathryn E.; Riley, Christopher J.; Zoby, E. Vincent
1998-01-01
Design of the thermal protection system for any hypersonic flight vehicle requires determination of both the peak temperatures over the surface and the heating-rate history along the flight profile. In this paper, the process used to generate the aerothermal environments required for the X-34 Testbed Technology Demonstrator thermal protection system design is described as it has evolved from a relatively simplistic approach based on engineering methods applied to critical areas to one of detailed analyses over the entire vehicle. A brief description of the trajectory development leading to the selection of the thermal protection system design trajectory is included. Comparisons of engineering heating predictions with wind-tunnel test data and with results obtained using a Navier-Stokes flowfield code and an inviscid/boundary layer method are shown. Good agreement is demonstrated among all these methods for both the ground-test condition and the peak heating flight condition. Finally, the detailed analysis using engineering methods to interpolate the surface-heating-rate results from the inviscid/boundary layer method to predict the required thermal environments is described and results presented.
Engineering Aerothermal Analysis for X-34 Thermal Protection System Design
NASA Technical Reports Server (NTRS)
Wurster, Kathryn E.; Riley, Christopher J.; Zoby, E. Vincent
1998-01-01
Design of the thermal protection system for any hypersonic flight vehicle requires determination of both the peak temperatures over the surface and the heating-rate history along the flight profile. In this paper, the process used to generate the aerothermal environments required for the X-34 Testbed Technology Demonstrator thermal protection system design is described as it has evolved from a relatively simplistic approach based on engineering methods applied to critical areas to one of detailed analyses over the entire vehicle. A brief description of the trajectory development leading to the selection of the thermal protection system design trajectory is included. Comparisons of engineering heating predictions with wind-tunnel test data and with results obtained using a Navier- Stokes flowfield code and an inviscid/boundary layer method are shown. Good agreement is demonstrated among all these methods for both the ground-test condition and the peak heating flight condition. Finally, the detailed analysis using engineering methods to interpolate the surface-heating-rate results from the inviscid/boundary layer method to predict the required thermal environments is described and results presented.
Longitudinal-control design approach for high-angle-of-attack aircraft
NASA Technical Reports Server (NTRS)
Ostroff, Aaron J.; Proffitt, Melissa S.
1993-01-01
This paper describes a control synthesis methodology that emphasizes a variable-gain output feedback technique that is applied to the longitudinal channel of a high-angle-of-attack aircraft. The aircraft is a modified F/A-18 aircraft with thrust-vectored controls. The flight regime covers a range up to a Mach number of 0.7; an altitude range from 15,000 to 35,000 ft; and an angle-of-attack (alpha) range up to 70 deg, which is deep into the poststall region. A brief overview is given of the variable-gain mathematical formulation as well as a description of the discrete control structure used for the feedback controller. This paper also presents an approximate design procedure with relationships for the optimal weights for the selected feedback control structure. These weights are selected to meet control design guidelines for high-alpha flight controls. Those guidelines that apply to the longitudinal-control design are also summarized. A unique approach is presented for the feed-forward command generator to obtain smooth transitions between load factor and alpha commands. Finally, representative linear analysis results and nonlinear batch simulation results are provided.
NASA Technical Reports Server (NTRS)
Parrish, E. A., Jr.; Aylor, J. H.
1975-01-01
To aid work being conducted on the feasibility of a low cost Omega navigational receiver, a control panel was designed and constructed according to supplied specifications. Since the proposed Omega receiver is designed around a microprocessor, software engineering necessary for control panel operation is included in the design. The control panel is to be used as an operational model for use in the design of a prototype receiver. A detailed description of the hardware design is presented along with a description of the software needed to operate the panel. A complete description of the operating procedures for the panel are also included.
14 CFR 21.97 - Approval of major changes in type design.
Code of Federal Regulations, 2011 CFR
2011-01-01
... necessary descriptive data for inclusion in the type design the other configurations of the same engine type... for approval of a major change in type design must— (1) Provide substantiating data and necessary descriptive data for inclusion in the type design; (2) Show that the changed product complies with the...
14 CFR 21.97 - Approval of major changes in type design.
Code of Federal Regulations, 2013 CFR
2013-01-01
.... (a) An applicant for approval of a major change in type design must— (1) Provide substantiating data and necessary descriptive data for inclusion in the type design; (2) Show that the changed product... the necessary descriptive data for inclusion in the type design the other configurations of the same...
14 CFR 21.97 - Approval of major changes in type design.
Code of Federal Regulations, 2010 CFR
2010-01-01
... must submit substantiating data and necessary descriptive data for inclusion in the type design. (b... major change in type design must— (1) Provide substantiating data and necessary descriptive data for... 14 Aeronautics and Space 1 2010-01-01 2010-01-01 false Approval of major changes in type design...
Digital systems design language. Design synthesis of digital systems
NASA Technical Reports Server (NTRS)
Shiva, S. G.
1979-01-01
The Digital Systems Design Language (DDL) is implemented on the SEL-32 computer systems. The details of the language, translator and simulator programs are included. Several example descriptions and a tutorial on hardware description languages are provided, to guide the user.
DOE Office of Scientific and Technical Information (OSTI.GOV)
Charles Bullinger
2005-02-07
The Design Team continued to conference this quarter. Their primary task during this timeframe was to finalize the dryer design based on information learned from the NDIC Pilot work and detailed design discussions at Barr offices in August. Heyl-Patterson was tasked with incorporating all comments and drafting drawings. They submitted a preliminary proposal which spawned detailed discussions about tube bundle, air locks, and fire suppression systems. The type of fire protection specified dictated the final structural arrangement. Three meetings were spent discussing the pro's and con's of suppression vs. ventilation systems. In the end, the dryer and bucket elevator willmore » have suppression systems and the remaining equipment will be explosion vented. This is in agreement with GRE's current insurer, FM Global. Three inlet airlocks were reduced to two and four outlets were reduced to three. The inlet plenum was subdivided for greater flexibility and sparging air added in the outlet plenum. It was also decided to use bundles with varied material, diameter, and tube & fin spacing. This will be completed in an effort to identify for us which configuration has the best heat transfer characteristics using coal as the fluidizing medium. The dryer will also be delivered in four pieces. This will allow for installation through the current access door on the Air Heater deck. The Input/Output list and functional description was completed and forwarded to Honeywell to finalize controls. Major pieces of equipment received this quarter were the Bucket Elevator, Liewell Screen, conveyors, and Motor Control Center. ICI completed removal of the wall separating Silo 28 from the dryer area; handrail and grating between the two areas has also been removed. They relocated a blowdown line. They moved an Air Heater basket access hatch.« less
Carbon Mineralization by Aqueous Precipitation for Beneficial Use of CO 2 from Flue Gas
DOE Office of Scientific and Technical Information (OSTI.GOV)
Devenney, Martin; Gilliam, Ryan; Seeker, Randy
The objective of this project was to demonstrate an innovative process to mineralize CO 2 from flue gas directly to reactive carbonates and maximize the value and versatility of its beneficial use products. The program scope includes the design, construction, and testing of a CO 2 Conversion to Material Products (CCMP) Pilot Demonstration Plant utilizing CO 2 from the flue gas of a power production facility in Moss Landing, CA as well as flue gas from coal combustion. This final report details all development, analysis, design and testing of the project. Also included in the final report are an updatedmore » Techno-Economic Analysis and CO 2 Lifecycle Analysis. The subsystems included in the pilot demonstration plant are the mineralization subsystem, the Alkalinity Based on Low Energy (ABLE) subsystem, the waste calcium oxide processing subsystem, and the fiber cement board production subsystem. The fully integrated plant was proven to be capable of capturing CO 2 from various sources (gas and coal) and mineralizing it into a reactive calcium carbonate binder and subsequently producing commercial size (4ftx8ft) fiber cement boards. The final report provides a description of the “as built” design of these subsystems and the results of the commissioning activities that have taken place to confirm operability. The report also discusses the results of the fully integrated operation of the facility. Fiber cement boards have been produced in this facility exclusively using reactive calcium carbonate from captured CO 2 from flue gas. These boards meet all US and China appropriate acceptance standards. Use demonstrations for these boards are now underway.« less
40 CFR 435.30 - Applicability; description of the onshore subcategory.
Code of Federal Regulations, 2014 CFR
2014-07-01
... 40 Protection of Environment 30 2014-07-01 2014-07-01 false Applicability; description of the onshore subcategory. 435.30 Section 435.30 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY... been considered “coastal” as defined under the interim final regulations for this industry (40 CFR 435...
40 CFR 435.30 - Applicability; description of the onshore subcategory.
Code of Federal Regulations, 2012 CFR
2012-07-01
... 40 Protection of Environment 31 2012-07-01 2012-07-01 false Applicability; description of the onshore subcategory. 435.30 Section 435.30 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY... been considered “coastal” as defined under the interim final regulations for this industry (40 CFR 435...
40 CFR 435.30 - Applicability; description of the onshore subcategory.
Code of Federal Regulations, 2011 CFR
2011-07-01
... 40 Protection of Environment 30 2011-07-01 2011-07-01 false Applicability; description of the onshore subcategory. 435.30 Section 435.30 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY... been considered “coastal” as defined under the interim final regulations for this industry (40 CFR 435...
40 CFR 435.30 - Applicability; description of the onshore subcategory.
Code of Federal Regulations, 2013 CFR
2013-07-01
... 40 Protection of Environment 31 2013-07-01 2013-07-01 false Applicability; description of the onshore subcategory. 435.30 Section 435.30 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY... been considered “coastal” as defined under the interim final regulations for this industry (40 CFR 435...
40 CFR 435.30 - Applicability; description of the onshore subcategory.
Code of Federal Regulations, 2010 CFR
2010-07-01
... 40 Protection of Environment 29 2010-07-01 2010-07-01 false Applicability; description of the onshore subcategory. 435.30 Section 435.30 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY... been considered “coastal” as defined under the interim final regulations for this industry (40 CFR 435...
NASA Technical Reports Server (NTRS)
Power, J. C.
1978-01-01
A planned flight test of an 8 cm diameter, electron-bombardment mercury ion thruster system is described. The primary objective of the test is to flight qualify the 5 mN (1 mlb.) thruster system for auxiliary propulsion applications. A seven year north-south stationkeeping mission was selected as the basis for the flight test operating profile. The flight test, which will employ two thruster systems, will also generate thruster system space performance data, measure thruster-spacecraft interactions, and demonstrate thruster operation in a number of operating modes. The flight test is designated as SAMSO-601 and will be flown aboard the shuttle-launched Air Force space test program P80-1 satellite in 1981. The spacecraft will be 3- axis stabilized in its final 740 km circular orbit, which will have an inclination of approximately greater than 73 degrees. The spacecraft design lifetime is three years.
Overview of free-piston Stirling SP-100 activities at the NASA Lewis Research Center
NASA Technical Reports Server (NTRS)
Slaby, J. G.
1986-01-01
An overview of the National Aeronautics and Space Administration (NASA) Lewis Research Center (LeRC) SP-100 free-piston Stirling engine activities is presented. These activities are being conducted in support of the Department of Defense (DOD), Department of Energy (DOE), and NASA. The space-power technology effort, under SP-100, addresses the status of the 25 kWe Space Power Demonstrator Engine (SPDE). Another facet of the SP-100 project covers the status of an endurance test. Dynamic balancing of the SPDE engine is discussed along with a summary covering the parametric results of a study showing the relationship between power-converter specific weight and efficiency both as a function of Stirling engine heater to cooler temperature ratio. Design parameters and conceptual design features are presented for a 25 kWe, single-cylinder free-piston Stirling space-power converter. And finally, a description of a hydrodynamic gas bearing concept is presented.
Gurskaya, N G; Staroverov, D B; Lukyanov, K A
2016-01-01
Alternative splicing is an important mechanism of regulation of gene expression and expansion of proteome complexity. Recently we developed a new fluorescence reporter for quantitative analysis of alternative splicing of a target cassette exon in live cells (Gurskaya et al., 2012). It consists of a specially designed minigene encoding red and green fluorescent proteins (Katushka and TagGFP2) and a fragment of the target gene between them. Skipping or inclusion of the alternative exon induces a frameshift; ie, alternative exon length must not be a multiple of 3. Finally, red and green fluorescence intensities of cells expressing this reporter are used to estimate the percentage of alternative (exon-skipped) and normal (exon-retained) transcripts. Here, we provide a detailed description of design and application of the fluorescence reporter of a target alternative exon splicing in mammalian cell lines. © 2016 Elsevier Inc. All rights reserved.
NASA Technical Reports Server (NTRS)
Lieberman, S. L.
1974-01-01
Based upon extensive contacts with vendors, a broad array of non-flammable polymeric specie, and additives generally noted to have flame retarding properties, were considered. The following polymeric matrices were examined: modified silicone and fluorosilicone RTV's polyesters, epoxies, urethanes, and epoxy-urethanes. Optimization of formulations to obtain a suitable balance between the various properties and flammability resistance led to the final selection of a silicone RTV/additive-loaded compound which meets almost all program requirements. The very low valued properties found are within a realistic level of design toleration. Complete formulation, processing, and test data is provided for this compound, EPOCAST 87517-A/B, and the other formulations prepared by the project. Details of those test methods are presented along with procedures utilized in the program. In addition, a description of the special flammability facility previously designed and then modified for this program is also presented.
Uribe, Gustavo A; Blobel, Bernd; López, Diego M; Ruiz, Alonso A
2015-01-01
The development of software supporting inter-disciplinary systems like the type 2 diabetes mellitus care requires the deployment of methodologies designed for this type of interoperability. The GCM framework allows the architectural description of such systems and the development of software solutions based on it. A first step of the GCM methodology is the definition of a generic architecture, followed by its specialization for specific use cases. This paper describes the specialization of the generic architecture of a system, supporting Type 2 diabetes mellitus glycemic control, for a pharmacotherapy use case. It focuses on the behavioral aspect of the system, i.e. the policy domain and the definition of the rules governing the system. The design of this architecture reflects the inter-disciplinary feature of the methodology. Finally, the resulting architecture allows building adaptive, intelligent and complete systems.
Introduction to the magnet and vacuum systems of an electron storage ring
DOE Office of Scientific and Technical Information (OSTI.GOV)
Weng, W.T.
An accelerator or storage ring complex is a concerted interplay of various functional systems. For the convenience of discussion we can divide it into the following systems: injector, magnet, RF, vacuum, instrumentation and control. In addition, the conventional construction of the building and radiation safety consideration are also needed and finally the beam lines, detector, data acquisition and analysis set-ups for research programs. Dr. L. Teng has given a comprehensive review of the whole complex and the operation of such a facility. I concentrate on the description of magnet and vacuum systems. Only the general function of each system andmore » the basic design concepts will be introduced, no detailed engineering practice will be given which will be best done after a machine design is produced. For further understanding and references a table of bibliography is provided at the end of the paper.« less
Structural Analysis of Chemokine Receptor–Ligand Interactions
2017-01-01
This review focuses on the construction and application of structural chemokine receptor models for the elucidation of molecular determinants of chemokine receptor modulation and the structure-based discovery and design of chemokine receptor ligands. A comparative analysis of ligand binding pockets in chemokine receptors is presented, including a detailed description of the CXCR4, CCR2, CCR5, CCR9, and US28 X-ray structures, and their implication for modeling molecular interactions of chemokine receptors with small-molecule ligands, peptide ligands, and large antibodies and chemokines. These studies demonstrate how the integration of new structural information on chemokine receptors with extensive structure–activity relationship and site-directed mutagenesis data facilitates the prediction of the structure of chemokine receptor–ligand complexes that have not been crystallized. Finally, a review of structure-based ligand discovery and design studies based on chemokine receptor crystal structures and homology models illustrates the possibilities and challenges to find novel ligands for chemokine receptors. PMID:28165741
Design and Development of a Baseband Processor for the Advanced Communications Technology Satellite
NASA Technical Reports Server (NTRS)
Lee, Kerry D.
1996-01-01
This paper describes the implementation of the operational baseband processor (BBP) subsystem on board the NASA Advanced Communications Technology Satellite (ACTS). The BBP supports the network consisting of the NASA ground station (NGS) low burst rate (LBR) terminals, and the T1 very small aperture terminals (VSAT's), to provide flexible, demand assigned satellite switched (SS), baseband processed frequency division modulated (FDM)/time division multiple access (TDMA) operations. This paper presents an overview of the baseband processor and includes a description of the data flow, functional block diagrams, and a discussion of the implementation of BBP. A discussion of the supporting technologies for the BBP is presented. A brief summary of BBP-level performance testing is also presented. Finally, a discussion of the implications of current technology on the BBP design, if it were to be developed today, is presented.
Characterizing Black Hole Mergers
NASA Technical Reports Server (NTRS)
Baker, John; Boggs, William Darian; Kelly, Bernard
2010-01-01
Binary black hole mergers are a promising source of gravitational waves for interferometric gravitational wave detectors. Recent advances in numerical relativity have revealed the predictions of General Relativity for the strong burst of radiation generated in the final moments of binary coalescence. We explore features in the merger radiation which characterize the final moments of merger and ringdown. Interpreting the waveforms in terms of an rotating implicit radiation source allows a unified phenomenological description of the system from inspiral through ringdown. Common features in the waveforms allow quantitative description of the merger signal which may provide insights for observations large-mass black hole binaries.
The Loyal Opposition Comments on Plan Domain Description Languages
NASA Technical Reports Server (NTRS)
Frank, Jeremy; Golden, Keith; Jonsson, Ari
2003-01-01
In this paper we take a critical look at PDDL 2.1 as designers and users of plan domain description languages. We describe planning domains that have features which are hard to model using PDDL 2.1. We then offer some suggestions on domain description language design, and describe how these suggestions make modeling our chosen domains easier.
DOT National Transportation Integrated Search
2013-12-01
In this final report draft, our research results during the project period are highlighted : and summarized. Detailed description of our research activities is documented in our : submitted quarterly reports. The results reported in this Final Report...
DOT National Transportation Integrated Search
2015-02-01
This Demonstration Team Final Report has been prepared to provide an overview of the conduct and qualitative findings of the LA-Gateway FRATIS development and testing program. More specifically, this document provides: A description of the testin...
South Florida freight advanced traveler information system : demonstration team final report.
DOT National Transportation Integrated Search
2015-05-01
This Demonstration Team Final Report has been prepared to provide an overview of the conduct and qualitative findings of the South Florida FRATIS development and testing program. More specifically, this document provides: A description of the tes...
DOE Office of Scientific and Technical Information (OSTI.GOV)
Ermi, A.M.
1997-05-01
Description of the Proposed Activity/REPORTABLE OCCURRENCE or PIAB: This ECN changes the computer systems design description support document describing the computers system used to control, monitor and archive the processes and outputs associated with the Hydrogen Mitigation Test Pump installed in SY-101. There is no new activity or procedure associated with the updating of this reference document. The updating of this computer system design description maintains an agreed upon documentation program initiated within the test program and carried into operations at time of turnover to maintain configuration control as outlined by design authority practicing guidelines. There are no new crediblemore » failure modes associated with the updating of information in a support description document. The failure analysis of each change was reviewed at the time of implementation of the Systems Change Request for all the processes changed. This document simply provides a history of implementation and current system status.« less
37 CFR 251.48 - Rules of evidence.
Code of Federal Regulations, 2010 CFR
2010-07-01
... furnished: (1) Sample surveys. (i) A clear description of the survey design, the definition of the universe...) A complete description of the design, the controlled conditions, and the implementation of controls...
37 CFR 251.48 - Rules of evidence.
Code of Federal Regulations, 2011 CFR
2011-07-01
... furnished: (1) Sample surveys. (i) A clear description of the survey design, the definition of the universe...) A complete description of the design, the controlled conditions, and the implementation of controls...
Nadig, Aparna; Vivanti, Giacomo; Ozonoff, Sally
2009-12-01
This study compared the object descriptions of school-age children with high-functioning autism (HFA) with those of a matched group of typically developing children. Descriptions were elicited in a referential communication task where shared information was manipulated, and in a guessing game where clues had to be provided about the identity of an object that was hidden from the addressee. Across these tasks, increasingly complex levels of audience design were assessed: (1) the ability to give adequate descriptions from one's own perspective, (2) the ability to adjust descriptions to an addressee's perspective when this differs from one's own, and (3) the ability to provide indirect yet identifying descriptions in a situation where explicit labeling is inappropriate. Results showed that there were group differences in all three cases, with the HFA group giving less efficient descriptions with respect to the relevant context than the comparison group. More revealing was the identification of distinct adaptation profiles among the HFA participants: those who had difficulty with all three levels, those who displayed Level 1 audience design but poor Level 2 and Level 3 design, and those demonstrated all three levels of audience design, like the majority of the comparison group. Higher structural language ability, rather than symptom severity or social skills, differentiated those HFA participants with typical adaptation profiles from those who displayed deficient audience design, consistent with previous reports of language use in autism.
Natural Resource Information System. Volume 1: Overall description
NASA Technical Reports Server (NTRS)
1972-01-01
A prototype computer-based Natural Resource Information System was designed which could store, process, and display data of maximum usefulness to land management decision making. The system includes graphic input and display, the use of remote sensing as a data source, and it is useful at multiple management levels. A survey established current decision making processes and functions, information requirements, and data collection and processing procedures. The applications of remote sensing data and processing requirements were established. Processing software was constructed and a data base established using high-altitude imagery and map coverage of selected areas of SE Arizona. Finally a demonstration of system processing functions was conducted utilizing material from the data base.
Salud Para Su Corazon (Health for Your Heart) Community Health Worker Model
Balcazar, H.; Alvarado, M.; Ortiz, G.
2012-01-01
This article describes 6 Salud Para Su Corazon (SPSC) family of programs that have addressed cardiovascular disease risk reduction in Hispanic communities facilitated by community health workers (CHWs) or Promotores de Salud (PS). A synopsis of the programs illustrates the designs and methodological approaches that combine community-based participatory research for 2 types of settings: community and clinical. Examples are provided as to how CHWs can serve as agents of change in these settings. A description is presented of a sustainability framework for the SPSC family of programs. Finally, implications are summarized for utilizing the SPSC CHW/PS model to inform ambulatory care management and policy. PMID:21914992
NASA Technical Reports Server (NTRS)
Mukhopadhyay, A. K.
1978-01-01
A description is presented of six simulation cases investigating the effect of the variation of static-dynamic Coulomb friction on servo system stability/performance. The upper and lower levels of dynamic Coulomb friction which allowed operation within requirements were determined roughly to be three times and 50% respectively of nominal values considered in a table. A useful application for the nonlinear time response simulation is the sensitivity analysis of final hardware design with respect to such system parameters as cannot be varied realistically or easily in the actual hardware. Parameters of the static/dynamic Coulomb friction fall in this category.
NASA Technical Reports Server (NTRS)
Young, Roy M.; Montgomery, Edward E.; Montgomery, Sandy; Adams, Charles L.
2007-01-01
The NASA In-Space Propulsion Technology (ISPT) Projects Office has been sponsoring 2 separate, independent system design and development hardware demonstration activities during 2002-2005. ATK Space Systems of Goleta, CA was the prime contractor for one development team and L'Garde, Inc. of Tustin, CA was the prime contractor for the other development team. The goal of these activities was to advance the technology readiness level (TRL) of solar sail propulsion from 3 towards 6 by the year 2006. Component and subsystem fabrication and testing were completed successfully, including the ground deployment of 10-meter and 20-meter ground demonstration hardware systems under vacuum conditions. The deployment and structural testing of the 20-meter solar sail systems was conducted in the 30 meter diameter Space Power Facility thermal-vacuum chamber at NASA Glenn Plum Brook in April though August, 2005. This paper will present the results of the TRL assessment following the solar sail technology development activities associated with the design, development, analysis and testing of the 20-meter system ground demonstrators. Descriptions of the system designs for both the ATK and L'Garde systems will be presented. Changes, additions and evolution of the system designs will be highlighted. A description of the modeling and analyses activities performed by both teams, as well as testing conducted to raise the TRL of solar sail technology will be presented. A summary of the results of model correlation activities will be presented. Finally, technology gaps identified during the assessment and gap closure plans will be presented, along with "lessons learned", subsequent planning activities and validation flight opportunities for solar sail propulsion technology.
Production of refractory chamotte particle-reinforced geopolymer composite
NASA Astrophysics Data System (ADS)
Kovářík, T.; Kullová, L.; Rieger, D.
2016-04-01
Geopolymer resins are obtained by alkaline activation of aluminosilicate sources where raw calcined clays are one of the suitable potentialities. Besides the fact that chemical composition has an essential effect on final properties of the geopolymer binder, the type of filler strongly affected resulting properties of such granular composite. However, very few comparative studies have been done on detail description of composite systems: binder - granular filler, in relation to aggregate gradation design and rheology properties of the mixture. The aim of this work is to develop and describe granular composite concerning workability of the mixture and kinetics of geopolymerization/polycondensation through flow behaviour. The rheological measurements indicated that initial viscosities of the mixtures and their evolution are different for various proportions of the filler. Moreover, it was demonstrated that increase in complex viscosity responds to the creation of chemical bonds and the formation of structural network. Finally, a correlation of the mechanism of geopolymer formation was carried out by differential scanning calorimetry (DSC).
Coordinated study of Solar-Terrestrial Observatory (STO) payloads on space station
NASA Technical Reports Server (NTRS)
Wu, S. T.
1988-01-01
Since the publication of the final report of the science study group in October 1984 on the Solar Terrestrial Observatory (STO), its science goals and objectives have been clearly defined and a conceptual design and analysis was carried out by MSFC/NASA. Plans for the possible placing of the STO aboard the Space Station were made. A series of meetings for the STO science study group were held to review the instruments to be placed on the initial STO at Space Station IOC, and the placement of these instruments on the manned space station, polar platform, and the co-orbiting platform. A summary of these initial STO instruments is presented in Section 2. A brief description of the initial plan for the placement of STO instruments is included in Section 3. Finally, in Section 4, the scenario for the operation of the STO is discussed. These results were obtained from the report of the Solar Terrestrial Observatory mini-workshop held at MSFC on 6 June 1985.
Student nurses' experiences of using a learning contract as a method of assessment.
Bailey, Maria E; Tuohy, Dympna
2009-10-01
The purpose of this study was to describe final year undergraduate nurses' experiences of assessment through the use of a learning contract. Using a qualitative descriptive design, data was collected from a purposive sample of final (fourth) year undergraduate student nurses. Two approaches were taken for data collection, anonymous evaluative questionnaires and interviews. The study was approved by the local university research and ethics committee. Data was thematically analysed. This article presents and discusses the findings from the interviews. Findings suggest that students' approach to the assessment strategy influenced engagement with the learning contract. Three themes were identified: skills, perceptions, and actions. Within these themes three types of learner were identified: happy, pragmatic and fearful. Factors found to influence successful completion of the learning contract were: support, relevant skills, prior experiential learning and required theoretical knowledge. Recommendations include the need for educators to consider module assessments that recognise the learning needs and preferences of the student within a supportive environment.
A preliminary analysis of recent HVAC energy projects
DOE Office of Scientific and Technical Information (OSTI.GOV)
Gaddy, P.J.; Haake, C.F.
A typical Government HVAC design over the last 30 years consisted of two oversized (equal tonnage) electric chillers, two oversized (equal NBTU ratings) boilers, an air economizer cycle, a constant air volume system and a central station pneumatic control system. This typical basic layout for plant design has certain advantages such as simplicity and ease to construct throughout the country. The cookie cutter design/build approach suited federal facilities, when utility costs were not a major consideration, in-house maintenance and operations personnel were plentiful and energy conservation was a moral priority and not an economic concern. Those days are history asmore » energy costs have escalated and operating budgets continue to shrink leaving fewer personnel to maintain the same buildings. Advances in HVAC technology and the reduction in costs for energy efficient systems have finally started affecting the Federal Government`s HVAC replacement and new construction designs. This paper is a brief description of three HVAC projects that go outside the traditional government HVAC design parameters. GSA`s Pacific Rim Region, covering the states of Hawaii, California, Nevada, and Arizona, has implemented three HVAC projects utilizing different technologies not normally found in GSA Federal facilities.« less
Cavitation Inside High-Pressure Optically Transparent Fuel Injector Nozzles
NASA Astrophysics Data System (ADS)
Falgout, Z.; Linne, M.
2015-12-01
Nozzle-orifice flow and cavitation have an important effect on primary breakup of sprays. For this reason, a number of studies in recent years have used injectors with optically transparent nozzles so that orifice flow cavitation can be examined directly. Many of these studies use injection pressures scaled down from realistic injection pressures used in modern fuel injectors, and so the geometry must be scaled up so that the Reynolds number can be matched with the industrial applications of interest. A relatively small number of studies have shown results at or near the injection pressures used in real systems. Unfortunately, neither the specifics of the design of the optical nozzle nor the design methodology used is explained in detail in these papers. Here, a methodology demonstrating how to prevent failure of a finished design made from commonly used optically transparent materials will be explained in detail, and a description of a new design for transparent nozzles which minimizes size and cost will be shown. The design methodology combines Finite Element Analysis with relevant materials science to evaluate the potential for failure of the finished assembly. Finally, test results imaging a cavitating flow at elevated pressures are presented.
Employing a Qualitative Description Approach in Health Care Research.
Bradshaw, Carmel; Atkinson, Sandra; Doody, Owen
2017-01-01
A qualitative description design is particularly relevant where information is required directly from those experiencing the phenomenon under investigation and where time and resources are limited. Nurses and midwives often have clinical questions suitable to a qualitative approach but little time to develop an exhaustive comprehension of qualitative methodological approaches. Qualitative description research is sometimes considered a less sophisticated approach for epistemological reasons. Another challenge when considering qualitative description design is differentiating qualitative description from other qualitative approaches. This article provides a systematic and robust journey through the philosophical, ontological, and epistemological perspectives, which evidences the purpose of qualitative description research. Methods and rigor issues underpinning qualitative description research are also appraised to provide the researcher with a systematic approach to conduct research utilizing this approach. The key attributes and value of qualitative description research in the health care professions will be highlighted with the aim of extending its usage.
Employing a Qualitative Description Approach in Health Care Research
Bradshaw, Carmel; Atkinson, Sandra; Doody, Owen
2017-01-01
A qualitative description design is particularly relevant where information is required directly from those experiencing the phenomenon under investigation and where time and resources are limited. Nurses and midwives often have clinical questions suitable to a qualitative approach but little time to develop an exhaustive comprehension of qualitative methodological approaches. Qualitative description research is sometimes considered a less sophisticated approach for epistemological reasons. Another challenge when considering qualitative description design is differentiating qualitative description from other qualitative approaches. This article provides a systematic and robust journey through the philosophical, ontological, and epistemological perspectives, which evidences the purpose of qualitative description research. Methods and rigor issues underpinning qualitative description research are also appraised to provide the researcher with a systematic approach to conduct research utilizing this approach. The key attributes and value of qualitative description research in the health care professions will be highlighted with the aim of extending its usage. PMID:29204457
Hardware acceleration and verification of systems designed with hardware description languages (HDL)
NASA Astrophysics Data System (ADS)
Wisniewski, Remigiusz; Wegrzyn, Marek
2005-02-01
Hardware description languages (HDLs) allow creating bigger and bigger designs nowadays. The size of prototyped systems very often exceeds million gates. Therefore verification process of the designs takes several hours or even days. The solution for this problem can be solved by hardware acceleration of simulation.
Difficulties Encountered by Final-Year Male Nursing Students in Their Internship Programmes
Al-Momani, Mohammed Mahmoud
2017-01-01
Background The cultural norms of the Kingdom of Saudi Arabia do not encourage men to choose nursing as a career. Understanding male nursing students’ experiences of their clinical exposure to the nursing profession throughout their internship might increase their retention. This study explored the experiences of final-year male nursing students as they transitioned to the role of registered nurse. Methods A qualitative descriptive research design with an inductive content-analysis approach was used. The experiences of 22 final-year male nursing students from three public hospitals in a major city of Saudi Arabia were explored. The data were collected using focus-group interviews and documentary analysis in March 2015 and May 2015. Results Content analysis revealed three major themes: the societal and cultural image of male nurses, male students’ engagement in nursing practice, and restructuring the internship programmes’ policies to suit male students’ needs. Conclusion The findings reveal issues that mainly stem from negative social views of nursing as a male profession. Considering the students’ social and cultural needs during their internship programme will facilitate their transition into the role of registered nurse and their retention in the nursing profession. PMID:28951687
Lim, Heather K; Corden, Marya E
2017-01-01
Background Caregiver input has informed the design of a valid electronic patient-reported outcome (PRO) measure for use in pediatric rehabilitation. This proxy assessment may be further developed to expedite and enhance patient-centered care planning processes, but user input is first needed to finalize the core requirements that will guide its design. Objective The objective of this study was to examine the feasibility of a stepwise process for building on a baseline assessment of young children's participation in activities to develop a care plan relevant to pediatric rehabilitation. Methods A cross-sectional descriptive study design was employed using qualitative methods. Data were collected via Web-based technology and by telephone. Twenty-five caregivers of young children (9 with developmental delays, 16 without delays) and between 1 and 7 years were recruited from a subsample of parents who had previously enrolled in a Web-based validation of a PRO on children’s participation and provided consent for future contact. Each caregiver completed a demographic questionnaire and Young Children’s Participation and Environment Measure (YC-PEM) online, followed by a 20- to 60-min semistructured and audiotaped phone interview to review and build upon PRO results as summarized in an electronic report. Interview data were content coded to the interview guide and reviewed by multiple research staff to estimate feasibility according to stepwise completion rates, perceptions of difficulty in step completion, and perceptions of overall utility. Results Half of the participants in the final study sample (N=25) fully completed a stepwise process of building on their baseline PRO assessment to develop an initial care plan for their child. In most cases, similar stepwise completion rates and trends in the approaches taken for step completion were found regardless of the child’s disability status. However, more parents of children with disabilities reported difficulties in rank ordering their priorities for change and identified child-focused strategies for goal attainment. Nearly 77% (19/25) of users were willing to use the process to develop and communicate intervention priorities and strategies with professionals, family, and friends. Conclusions Results informed revisions to the care planning guide before usability and feasibility testing of an initial Web-based prototype that is now underway. PMID:29066421
Project Atlas Field Definitions | NOAA Gulf Spill Restoration
Archive Home Project Atlas Field Definitions Project Atlas Field Definitions Field Definition Project Title The Project Title as listed in the Final Early Restoration Plan and Environmental Assessment (FERP /EA). General Information: Project Description Narrative description of the project. General
Calibration of solar radiation measuring instruments. Final report
DOE Office of Scientific and Technical Information (OSTI.GOV)
Bahm, R J; Nakos, J C
A review of solar radiation measurement of instruments and some types of errors is given; and procedures for calibrating solar radiation measuring instruments are detailed. An appendix contains a description of various agencies who perform calibration of solar instruments and a description of the methods they used at the time this report was prepared. (WHK)
Mobile Router Testing with Diverse RF Communications Links
NASA Technical Reports Server (NTRS)
Brooks, David; Hoder, Doug; Wilkins, Ryan
2004-01-01
This is a short report on demonstrations using Mobile IP and several diverse physical communications links to connect a mobile network to a fixed IPv4 internet. The first section is a description of the equipment used, followed by descriptions of the tests, the theoretical results, and finally conclusions and the actual data.
Automatic Requirements Specification Extraction from Natural Language (ARSENAL)
2014-10-01
designers, implementers) involved in the design of software systems. However, natural language descriptions can be informal, incomplete, imprecise...communication of technical descriptions between the various stakeholders (e.g., customers, designers, imple- menters) involved in the design of software systems...the accuracy of the natural language processing stage, the degree of automation, and robustness to noise. 1 2 Introduction Software systems operate in
Design of a compliant wheel for a miniature rover to be used on Mars
NASA Astrophysics Data System (ADS)
Carroll, Mark; Johnson, Jess; Yong, Jimmy
1991-12-01
The Jet Propulsion Laboratory has identified the need for a compliant wheel for a miniature martian rover vehicle. This wheel must meet requirements of minimum mass, linear radial deflection, and reliability in cryogenic conditions over a five year lifespan. Additionally, axial and tangential deflections must be no more than 10 percent of the radial value. The team designed a wheel by use of finite element and dimensionless parameter analysis. Due to the complex geometry of the wheel, a finite element model describing its behavior was constructed to investigate different wheel configurations. Axial and tangential deflections were greatly reduced but did not meet design criteria. A composite material was selected for its high strength, toughness, fatigue resistance, and damping characteristics. The team chose a Kevlar fiber filled thermoplastic composite. This report is divided into four primary sections. First, the introduction section gives background information, defines the task, and discusses the scope and limitations of the project. Second, the alternative designs section introduces alternative design solutions, addresses advantages and disadvantages of each, and identifies the parameters used to determine the best design. Third, the design solution section introduces the methods used to evaluate the alternates, and gives a description of the design process used. Finally, the conclusion and recommendations section evaluates the wheel design, and offers recommendations pertaining to improvement of the design solution.
Design of a compliant wheel for a miniature rover to be used on Mars
NASA Technical Reports Server (NTRS)
Carroll, Mark; Johnson, Jess; Yong, Jimmy
1991-01-01
The Jet Propulsion Laboratory has identified the need for a compliant wheel for a miniature martian rover vehicle. This wheel must meet requirements of minimum mass, linear radial deflection, and reliability in cryogenic conditions over a five year lifespan. Additionally, axial and tangential deflections must be no more than 10 percent of the radial value. The team designed a wheel by use of finite element and dimensionless parameter analysis. Due to the complex geometry of the wheel, a finite element model describing its behavior was constructed to investigate different wheel configurations. Axial and tangential deflections were greatly reduced but did not meet design criteria. A composite material was selected for its high strength, toughness, fatigue resistance, and damping characteristics. The team chose a Kevlar fiber filled thermoplastic composite. This report is divided into four primary sections. First, the introduction section gives background information, defines the task, and discusses the scope and limitations of the project. Second, the alternative designs section introduces alternative design solutions, addresses advantages and disadvantages of each, and identifies the parameters used to determine the best design. Third, the design solution section introduces the methods used to evaluate the alternates, and gives a description of the design process used. Finally, the conclusion and recommendations section evaluates the wheel design, and offers recommendations pertaining to improvement of the design solution.
Muecas: A Multi-Sensor Robotic Head for Affective Human Robot Interaction and Imitation
Cid, Felipe; Moreno, Jose; Bustos, Pablo; Núñez, Pedro
2014-01-01
This paper presents a multi-sensor humanoid robotic head for human robot interaction. The design of the robotic head, Muecas, is based on ongoing research on the mechanisms of perception and imitation of human expressions and emotions. These mechanisms allow direct interaction between the robot and its human companion through the different natural language modalities: speech, body language and facial expressions. The robotic head has 12 degrees of freedom, in a human-like configuration, including eyes, eyebrows, mouth and neck, and has been designed and built entirely by IADeX (Engineering, Automation and Design of Extremadura) and RoboLab. A detailed description of its kinematics is provided along with the design of the most complex controllers. Muecas can be directly controlled by FACS (Facial Action Coding System), the de facto standard for facial expression recognition and synthesis. This feature facilitates its use by third party platforms and encourages the development of imitation and of goal-based systems. Imitation systems learn from the user, while goal-based ones use planning techniques to drive the user towards a final desired state. To show the flexibility and reliability of the robotic head, the paper presents a software architecture that is able to detect, recognize, classify and generate facial expressions in real time using FACS. This system has been implemented using the robotics framework, RoboComp, which provides hardware-independent access to the sensors in the head. Finally, the paper presents experimental results showing the real-time functioning of the whole system, including recognition and imitation of human facial expressions. PMID:24787636
Sánchez, C; Ortega, B; Wei, J L; Tang, J; Capmany, J
2013-03-25
We provide an analytical study on the propagation effects of a directly modulated OOFDM signal through a dispersive fiber and subsequent photo-detection. The analysis includes the effects of the laser operation point and the interplay between chromatic dispersion and laser chirp. The final expression allows to understand the physics behind the transmission of a multi-carrier signal in the presence of residual frequency modulation and the description of the induced intermodulation distortion gives us a detailed insight into the diferent intermodulation products which impair the recovered signal at the receiver-end side. Numerical comparisons between transmission simulations results and those provided by evaluating the expression obtained are carried out for different laser operation points. Results obtained by changing the fiber length, laser parameters and using single mode fiber with negative and positive dispersion are calculated in order to demonstrate the validity and versatility of the theory provided in this paper. Therefore, a novel analytical formulation is presented as a versatile tool for the description and study of IM/DD OOFDM systems with variable design parameters.
Video personalization for usage environment
NASA Astrophysics Data System (ADS)
Tseng, Belle L.; Lin, Ching-Yung; Smith, John R.
2002-07-01
A video personalization and summarization system is designed and implemented incorporating usage environment to dynamically generate a personalized video summary. The personalization system adopts the three-tier server-middleware-client architecture in order to select, adapt, and deliver rich media content to the user. The server stores the content sources along with their corresponding MPEG-7 metadata descriptions. Our semantic metadata is provided through the use of the VideoAnnEx MPEG-7 Video Annotation Tool. When the user initiates a request for content, the client communicates the MPEG-21 usage environment description along with the user query to the middleware. The middleware is powered by the personalization engine and the content adaptation engine. Our personalization engine includes the VideoSue Summarization on Usage Environment engine that selects the optimal set of desired contents according to user preferences. Afterwards, the adaptation engine performs the required transformations and compositions of the selected contents for the specific usage environment using our VideoEd Editing and Composition Tool. Finally, two personalization and summarization systems are demonstrated for the IBM Websphere Portal Server and for the pervasive PDA devices.
Women over the age of 85 years who live alone: a descriptive study.
Foster, Pam; Neville, Stephen
2010-03-01
New Zealand as a society is ageing. This translates to an increasing number of people particularly women, over the age of 85 years. Despite many older women living alone, they are often perceived by both society and health professionals as frail and dependent. This qualitative study was designed to explore and describe experiences of older women who lived alone in the community. A qualitative descriptive methodology underpinned the study. A sample of five older women who lived alone in their own homes was interviewed. Data were analysed using a general inductive approach. Three themes emerged which reflected the reality of living by themselves: "active participation", "keeping control", and" healthy living". The information gained from describing the lives of this group of women suggests that many older women are able to live full and successful independent lives in the community. This research provides nursing with a better understanding of the realities for older women who live alone. Finally, this paper will provide nurses with some ideas about how best to support this group of people as they age.
NASA Technical Reports Server (NTRS)
Landano, M. R.; Easter, R. W.
1984-01-01
Aspects of Space Station automated systems testing and verification are discussed, taking into account several program requirements. It is found that these requirements lead to a number of issues of uncertainties which require study and resolution during the Space Station definition phase. Most, if not all, of the considered uncertainties have implications for the overall testing and verification strategy adopted by the Space Station Program. A description is given of the Galileo Orbiter fault protection design/verification approach. Attention is given to a mission description, an Orbiter description, the design approach and process, the fault protection design verification approach/process, and problems of 'stress' testing.
Horticulture Therapy Curriculum Development. Final Report.
ERIC Educational Resources Information Center
Taylor, Sally; And Others
This final report includes two major components: a narrative describing a project at Edmonds Community College, Washington, to develop a horticultural therapy curriculum and descriptions of six courses developed or revised during the project. The narrative reports the development of a supplementary interdisciplinary certification program to train…
College Students’ Perceived Differences Between the Terms Real Meal, Meal, and Snack
Banna, Jinan; Richards, Rickelle; Brown, Lora Beth
2017-01-01
Objective To assess qualitatively and quantitatively college students’ perceived differences between a real meal, meal, and snack. Design A descriptive study design was used to administer an 11-item online survey to college students. Setting Two university campuses in the western US. Participants Pilot testing was conducted with 20 students. The final survey was completed by 628 ethnically diverse students. Main Outcome Measures Students’ perceptions of the terms real meal, meal, and snack. Analysis Three researchers coded the data independently, reconciled differences via conference calls, and agreed on a final coding scheme. Data were reevaluated based on the coding scheme. Means, frequencies, Pearson chi-square, and t test statistics were used. Results More than half of students perceived a difference between the terms real meal and meal. Most (97.6%) perceived a difference between the terms meal and snack. A marked difference in the way students defined these terms was evident, with a real meal deemed nutritious and healthy and meeting dietary recommendations, compared with meals, which were considered anything to eat. Conclusions and Implications These findings suggest that the term real meal may provide nutrition educators with a simple phrase to use in educational campaigns to promote healthful food intake among college students. PMID:27993555
Tools for Nonlinear Control Systems Design
NASA Technical Reports Server (NTRS)
Sastry, S. S.
1997-01-01
This is a brief statement of the research progress made on Grant NAG2-243 titled "Tools for Nonlinear Control Systems Design", which ran from 1983 till December 1996. The initial set of PIs on the grant were C. A. Desoer, E. L. Polak and myself (for 1983). From 1984 till 1991 Desoer and I were the Pls and finally I was the sole PI from 1991 till the end of 1996. The project has been an unusually longstanding and extremely fruitful partnership, with many technical exchanges, visits, workshops and new avenues of investigation begun on this grant. There were student visits, long term.visitors on the grant and many interesting joint projects. In this final report I will only give a cursory description of the technical work done on the grant, since there was a tradition of annual progress reports and a proposal for the succeeding year. These progress reports cum proposals are attached as Appendix A to this report. Appendix B consists of papers by me and my students as co-authors sorted chronologically. When there are multiple related versions of a paper, such as a conference version and journal version they are listed together. Appendix C consists of papers by Desoer and his students as well as 'solo' publications by other researchers supported on this grant similarly chronologically sorted.
DOE Office of Scientific and Technical Information (OSTI.GOV)
Smith, J.; Mowrey, J.
1995-12-01
This report describes the design, development and testing of process controls for selected system operations in the Browns Ferry Nuclear Plant (BFNP) Reactor Water Cleanup System (RWCU) using a Computer Simulation Platform which simulates the RWCU System and the BFNP Integrated Computer System (ICS). This system was designed to demonstrate the feasibility of the soft control (video touch screen) of nuclear plant systems through an operator console. The BFNP Integrated Computer System, which has recently. been installed at BFNP Unit 2, was simulated to allow for operator control functions of the modeled RWCU system. The BFNP Unit 2 RWCU systemmore » was simulated using the RELAP5 Thermal/Hydraulic Simulation Model, which provided the steady-state and transient RWCU process variables and simulated the response of the system to control system inputs. Descriptions of the hardware and software developed are also included in this report. The testing and acceptance program and results are also detailed in this report. A discussion of potential installation of an actual RWCU process control system in BFNP Unit 2 is included. Finally, this report contains a section on industry issues associated with installation of process control systems in nuclear power plants.« less
Space Ultrareliable Modular Computer (SUMC) instruction simulator
NASA Technical Reports Server (NTRS)
Curran, R. T.
1972-01-01
The design principles, description, functional operation, and recommended expansion and enhancements are presented for the Space Ultrareliable Modular Computer interpretive simulator. Included as appendices are the user's manual, program module descriptions, target instruction descriptions, simulator source program listing, and a sample program printout. In discussing the design and operation of the simulator, the key problems involving host computer independence and target computer architectural scope are brought into focus.
Methods for improving simulations of biological systems: systemic computation and fractal proteins
Bentley, Peter J.
2009-01-01
Modelling and simulation are becoming essential for new fields such as synthetic biology. Perhaps the most important aspect of modelling is to follow a clear design methodology that will help to highlight unwanted deficiencies. The use of tools designed to aid the modelling process can be of benefit in many situations. In this paper, the modelling approach called systemic computation (SC) is introduced. SC is an interaction-based language, which enables individual-based expression and modelling of biological systems, and the interactions between them. SC permits a precise description of a hypothetical mechanism to be written using an intuitive graph-based or a calculus-based notation. The same description can then be directly run as a simulation, merging the hypothetical mechanism and the simulation into the same entity. However, even when using well-designed modelling tools to produce good models, the best model is not always the most accurate one. Frequently, computational constraints or lack of data make it infeasible to model an aspect of biology. Simplification may provide one way forward, but with inevitable consequences of decreased accuracy. Instead of attempting to replace an element with a simpler approximation, it is sometimes possible to substitute the element with a different but functionally similar component. In the second part of this paper, this modelling approach is described and its advantages are summarized using an exemplar: the fractal protein model. Finally, the paper ends with a discussion of good biological modelling practice by presenting lessons learned from the use of SC and the fractal protein model. PMID:19324681
Description of the Large-Gap Magnetic Suspension System (LGMSS) ground based experiment
NASA Technical Reports Server (NTRS)
Groom, Nelson J.
1991-01-01
An overview of the Large Gap Magnetic Suspension System (LGMSS) ground-based experiment is provided. A description of the experiment, as originally defined, and the experiment objectives and potential applications of the technology resulting from the experiment are presented. Also, the results of two studies which were conducted to investigate the feasibility of implementing the experiment are presented and discussed. Finally, a description of the configuration which was selected for the experiment is described, and a summary of the paper is presented.
14 CFR 21.97 - Approval of major changes in type design.
Code of Federal Regulations, 2012 CFR
2012-01-01
... must— (1) Provide substantiating data and necessary descriptive data for inclusion in the type design... is made unless the applicant identifies in the necessary descriptive data for inclusion in the type... 14 Aeronautics and Space 1 2012-01-01 2012-01-01 false Approval of major changes in type design...
NASA Technical Reports Server (NTRS)
1981-01-01
Detailed information regarding the design and installation of a heating and hot water system in a commercial application is given. This information includes descriptions of system and building, design philosophy, control logic operation modes, design and installation drawing and a brief description of problems encountered and their solutions.
Design and Development of a Chemistry Subject Portal at Panjab University Library, India
ERIC Educational Resources Information Center
Singh, Neeraj Kumar; Mahajan, Preeti
2010-01-01
Purpose: This paper aims to give a brief description of some chemistry portals available worldwide, followed by a description of the chemistry portal developed for Panjab University Library, Chandigarh (India). Design/methodology/approach: A well-structured chemistry portal was designed for chemistry and its allied departments at Panjab University…
Basic School Teachers' Perceptions about Curriculum Design in Ghana
ERIC Educational Resources Information Center
Abudu, Amadu Musah; Mensah, Mary Afi
2016-01-01
This study focused on teachers' perceptions about curriculum design and barriers to their participation. The sample size was 130 teachers who responded to a questionnaire. The analyses made use of descriptive statistics and descriptions. The study found that the level of teachers' participation in curriculum design is low. The results further…
Functional description of the FAA's Aviation Environmental Design Tool's aircraft acoustics module
DOT National Transportation Integrated Search
2008-07-28
This paper presents architectural and functional descriptions of the Aircraft Acoustics Module : (AAM) in the Federal Aviation Administrations Aviation Environmental Design Tool (AEDT) : for modeling aircraft noise in the vicinity of airports. Whi...
Forest landscape description and inventories - a basis for landplanning and design
R. Burton Litton
1968-01-01
Describes six analytical factors and seven compositional types useful in recognition and description of scenic resources. Illustrates their application in two inventories made to aid managers and landscape architects in planning and design.
ERIC Educational Resources Information Center
Barnette, J. Jackson; Wallis, Anne Baber
2005-01-01
We rely a great deal on the schematic descriptions that represent experimental and quasi-experimental design arrangements, as well as the discussions of threats to validity associated with these, provided by Campbell and his associates: Stanley, Cook, and Shadish. Some of these designs include descriptions of treatments removed, removed and then…
Development of fuel oil management system software: Phase 1, Tank management module. Final report
DOE Office of Scientific and Technical Information (OSTI.GOV)
Lange, H.B.; Baker, J.P.; Allen, D.
1992-01-01
The Fuel Oil Management System (FOMS) is a micro-computer based software system being developed to assist electric utilities that use residual fuel oils with oil purchase and end-use decisions. The Tank Management Module (TMM) is the first FOMS module to be produced. TMM enables the user to follow the mixing status of oils contained in a number of oil storage tanks. The software contains a computational model of residual fuel oil mixing which addresses mixing that occurs as one oil is added to another in a storage tank and also purposeful mixing of the tank by propellers, recirculation or convection.Themore » model also addresses the potential for sludge formation due to incompatibility of oils being mixed. Part 1 of the report presents a technical description of the mixing model and a description of its development. Steps followed in developing the mixing model included: (1) definition of ranges of oil properties and tank design factors used by utilities; (2) review and adaption of prior applicable work; (3) laboratory development; and (4) field verification. Also, a brief laboratory program was devoted to exploring the suitability of suggested methods for predicting viscosities, flash points and pour points of oil mixtures. Part 2 of the report presents a functional description of the TMM software and a description of its development. The software development program consisted of the following steps: (1) on-site interviews at utilities to prioritize needs and characterize user environments; (2) construction of the user interface; and (3) field testing the software.« less
78 FR 68699 - Establishment of Class E Airspace; Battle Mountain, NV
Federal Register 2010, 2011, 2012, 2013, 2014
2013-11-15
...) navigation aid, Battle Mountain, NV. A favorable comment from the National Business Aviation Association...-4537. SUPPLEMENTARY INFORMATION: History The FAA published a final rule in the Federal Register... Final Rule Accordingly, pursuant to the authority delegated to me, the description under the History...
NASA Astrophysics Data System (ADS)
Ennico, Kimberly; Shirley, Mark; Colaprete, Anthony; Osetinsky, Leonid
2012-05-01
The primary objective of the Lunar Crater Observation and Sensing Satellite (LCROSS) was to confirm the presence or absence of water ice in a permanently shadowed region (PSR) at a lunar pole. LCROSS was classified as a NASA Class D mission. Its payload, the subject of this article, was designed, built, tested and operated to support a condensed schedule, risk tolerant mission approach, a new paradigm for NASA science missions. All nine science instruments, most of them ruggedized commercial-off-the-shelf (COTS), successfully collected data during all in-flight calibration campaigns, and most importantly, during the final descent to the lunar surface on October 9, 2009, after 112 days in space. LCROSS demonstrated that COTS instruments and designs with simple interfaces, can provide high-quality science at low-cost and in short development time frames. Building upfront into the payload design, flexibility, redundancy where possible even with the science measurement approach, and large margins, played important roles for this new type of payload. The environmental and calibration approach adopted by the LCROSS team, compared to existing standard programs, is discussed. The description, capabilities, calibration and in-flight performance of each instrument are summarized. Finally, this paper goes into depth about specific areas where the instruments worked differently than expected and how the flexibility of the payload team, the knowledge of instrument priority and science trades, and proactive margin maintenance, led to a successful science measurement by the LCROSS payload's instrument complement.
Arsiccio, Andrea; Pisano, Roberto
2018-06-01
The present work shows a rational method for the development of the freezing step of a freeze-drying cycle. The current approach to the selection of freezing conditions is still empirical and nonsystematic, thus resulting in poor robustness of control strategy. The final aim of this work is to fill this gap, describing a rational procedure, based on mathematical modeling, for properly choosing the freezing conditions. Mechanistic models are used for the prediction of temperature profiles during freezing and dimension of ice crystals being formed. Mathematical description of the drying phase of freeze-drying is also coupled with the results obtained by freezing models, thus providing a comprehensive characterization of the lyophilization process. In this framework, deep understanding of the phenomena involved is required, and according to the Quality by Design approach, this knowledge can be used to build the design space. The step-by-step procedure for building the design space for freezing is thus described, and examples of applications are provided. The calculated design space is validated upon experimental data, and we show that it allows easy control of the freezing process and fast selection of appropriate operating conditions. Copyright © 2018 American Pharmacists Association®. Published by Elsevier Inc. All rights reserved.
1992-01-01
dessert and snack items to increase acceptability and 31$,) UNCLASSIFIED UNCLASSIFIED AMENDED FY 1992/1993 BIENNIAL RDTE DESCRIPTIVE SUMMARY Program...Planned Program: " (U) Finalize development of non-organic and non-polluting processing bids for extruded and molded energetic materials * (U
Driver Education Task Analysis. Volume I: Task Descriptions. Final Report (August 1969-July 1970).
ERIC Educational Resources Information Center
McKnight, A. James; Adams, Bert B.
This resource guide is the first of a 4-volume report dealing with the development of driver education objectives through an analysis of the driver's task. Included are a detailed description of the behaviors required of passenger car drivers, rated criticalities of these behaviors, and items of supporting information relating to driver…
The Celebration of Death: Two Folk Tales about DEath. Mini-Module.
ERIC Educational Resources Information Center
African-American Inst., New York, NY. School Services Div.
This module contains two African folk tales about death, two descriptions of African funerals, a lesson plan with 11 questions exploring the finality of and customs surrounding death, and a bibliography of five books which deal with African religious beliefs. The folk tales present concepts of death and immortality of the soul. The descriptions of…
Federal Register 2010, 2011, 2012, 2013, 2014
2013-02-05
....S. manufactured commercial aircraft to Israel. Brief non-proprietary description of the anticipated use of the items being exported: To be used for short-haul passenger air service between Israel and... AL Israel Airlines, Ltd. Guarantor(s): N/A. Description of Items Being Exported: Boeing 737 aircraft...
Failover Switching Tests Between Two RF Communications Links
NASA Technical Reports Server (NTRS)
Brooks, David; Frantz, Brian; Hoder, Doug; Wilkins, Ryan
2003-01-01
This work presents a short report on the routing tests of the Ku band satcom and VHF line-of-sight communications systems on the Advanced Air Transportation Technologies (AATT) Aero/Mobile van. The first section is a description of the equipment used, followed by descriptions of the tests, the theoretical results, and finally, conclusions and the actual data.
NASA Technical Reports Server (NTRS)
Renaud, John E.; Batill, Stephen M.; Brockman, Jay B.
1998-01-01
This research effort is a joint program between the Departments of Aerospace and Mechanical Engineering and the Computer Science and Engineering Department at the University of Notre Dame. Three Principal Investigators; Drs. Renaud, Brockman and Batill directed this effort. During the four and a half year grant period, six Aerospace and Mechanical Engineering Ph.D. students and one Masters student received full or partial support, while four Computer Science and Engineering Ph.D. students and one Masters student were supported. During each of the summers up to four undergraduate students were involved in related research activities. The purpose of the project was to develop a framework and systematic methodology to facilitate the application of Multidisciplinary Design Optimization (N4DO) to a diverse class of system design problems. For all practical aerospace systems, the design of a systems is a complex sequence of events which integrates the activities of a variety of discipline "experts" and their associated "tools". The development, archiving and exchange of information between these individual experts is central to the design task and it is this information which provides the basis for these experts to make coordinated design decisions (i.e., compromises and trade-offs) - resulting in the final product design. Grant efforts focused on developing and evaluating frameworks for effective design coordination within a MDO environment. Central to these research efforts was the concept that the individual discipline "expert", using the most appropriate "tools" available and the most complete description of the system should be empowered to have the greatest impact on the design decisions and final design. This means that the overall process must be highly interactive and efficiently conducted if the resulting design is to be developed in a manner consistent with cost and time requirements. The methods developed as part of this research effort include; extensions to a sensitivity based Concurrent Subspace Optimization (CSSO) MDO algorithm; the development of a neural network response surface based CSSO-MDO algorithm; and the integration of distributed computing and process scheduling into the MDO environment. This report overviews research efforts in each of these focus. A complete bibliography of research produced with support of this grant is attached.
NASA Technical Reports Server (NTRS)
Middleton, W. D.; Lundry, J. L.; Coleman, R. G.
1980-01-01
The computer program documentation for the design and analysis of supersonic configurations is presented. Schematics and block diagrams of the major program structure, together with subroutine descriptions for each module are included.
Characteristics of Qualitative Descriptive Studies: A Systematic Review.
Kim, Hyejin; Sefcik, Justine S; Bradway, Christine
2017-02-01
Qualitative description (QD) is a term that is widely used to describe qualitative studies of health care and nursing-related phenomena. However, limited discussions regarding QD are found in the existing literature. In this systematic review, we identified characteristics of methods and findings reported in research articles published in 2014 whose authors identified the work as QD. After searching and screening, data were extracted from the sample of 55 QD articles and examined to characterize research objectives, design justification, theoretical/philosophical frameworks, sampling and sample size, data collection and sources, data analysis, and presentation of findings. In this review, three primary findings were identified. First, although there were some inconsistencies, most articles included characteristics consistent with the limited available QD definitions and descriptions. Next, flexibility or variability of methods was common and effective for obtaining rich data and achieving understanding of a phenomenon. Finally, justification for how a QD approach was chosen and why it would be an appropriate fit for a particular study was limited in the sample and, therefore, in need of increased attention. Based on these findings, recommendations include encouragement to researchers to provide as many details as possible regarding the methods of their QD studies so that readers can determine whether the methods used were reasonable and effective in producing useful findings. © 2016 Wiley Periodicals, Inc. © 2016 Wiley Periodicals, Inc.
Description of sampling designs using a comprehensive data structure
John C. Byrne; Albert R. Stage
1988-01-01
Maintaining permanent plot data with different sampling designs over long periods within an organization, as well as sharing such information between organizations, requires that common standards be used. A data structure for the description of the sampling design within a stand is proposed. It is based on the definition of subpopulations of trees sampled, the rules...
NASA Astrophysics Data System (ADS)
Huff, A. E.; Skinner, J. A.
2018-06-01
Final progress report on the 1:1,500,000-scale mapping of western Libya Montes and northwestern Tyrrhena Terra. The final unit names, labels, and descriptions are reported as well as the methodology for age determinations and brief geologic history.
Predicting Students' Performance on Agricultural Science Examination from Forecast Grades
ERIC Educational Resources Information Center
Moreetsi, Thobega; Mbako, Masole Trust
2008-01-01
The Botswana Examination Council (BEC) uses forecast grades obtained from secondary school Agriculture teachers to review component 2 of Agriculture final examination. Moderation of component 2 can help to improve candidates' final grade. This descriptive-correlational study purports to determine which of the component 1 (multiple choice),…
Digital systems design language
NASA Technical Reports Server (NTRS)
Shiva, S. G.
1979-01-01
Digital Systems Design Language (DDL) is implemented on the SEL-32 Computer Systems. The detaileds of the language, the translator, and the simulator, and the smulator programs are given. Several example descriptions and a tutorial on hardware description languages are provided, to guide the user.
Analysis of energy conservation alternatives for standard Army building. Final report
DOE Office of Scientific and Technical Information (OSTI.GOV)
Hittle, D.C.; O'Brien, R.E.; Percivall, G.S.
1983-03-01
This report describes energy conservation alternatives for five standard Army building designs. By surveying maps of major Army installations and using the Integrated Facilities System, the most popular designs were determined to be a two-company, rolling-pin-shaped barracks for enlisted personnel; a Type 64 barracks; a motor repair shop; a battalion headquarters and classroom building; and an enlisted personnel mess hall. The Building Loads Analysis and System Thermodynamics (BLAST) energy-analysis computer program was used to develop baseline energy consumption for each design based on the building descriptions and calibrated by comparison with the measured energy usage of similar buildings. Once themore » baseline was established, the BLAST program was used to study energy conservation alternatives (ECAs) which could be retrofit to the existing buildings. The ECAs included closing off air-handling units, adding storm windows, adding 2 in. (0.051 m) of exterior insulation to the walls, partially blocking the windows, adding roof insulation, putting up south overhangs, installing programmable thermostats, recovering heat from exhaust fans, installing temperature economizers, replacing lights, and installing partitions between areas of differing temperature.« less
NASA Technical Reports Server (NTRS)
Robertson, Jeffrey
2006-01-01
This paper describes the application of the Trio-Tri-Star Carpal Wrist to the Momentum Exchange Electro-Dynamic Re-boost (MXER) tether, an advanced space transportation concept being developed by the In-Space Propulsion Technology Office at NASA s Marshall Space Flight Center in Huntsville, Alabama. Dr. Joseph Bonometti and Mr. Kirk Sorensen are the principal engineers. In the paper, a brief overview of the MXER concept is given, with an emphasis on the design problem that this wrist is designed to address. The Trio-Tri-Star Carpal Wrist, a three degree of freedom parallel manipulator, invented by Dr. Stephen J. Canfield of Tennessee Tech University, is described with an overview of wrist geometry, kinematics, and stress analysis. A working model of the wrist was assembled at MSFC using Dr. Canfield s prototype to demonstrate its operation. Finally, a design description and supporting analysis of a MXER flight concept wrist is given, with recommendations for future development work.
Federal Register 2010, 2011, 2012, 2013, 2014
2013-08-09
...The U.S. Nuclear Regulatory Commission (NRC) is granting an exemption to allow a departure from the certification information of Tier 1 of the generic design control document (DCD) and issuing License Amendment No. 7 to Combined Licenses (COL), NPF-93 and NPF-94. The COLs were issued to South Carolina Electric and Gas (SCE&G) and South Carolina Public Service Authority (Santee Cooper) (the licensee), for construction and operation of the Virgil C. Summer Nuclear Station (VCSNS), Units 2 and 3 located in Fairfield County, South Carolina. The amendment changes requested revise the design of the bracing used to support the Turbine Building structure. This request requires changing Tier 1 information found in the Design Description portion of Updated Final Safety Analysis Report (UFSAR) section 3.3, ``Buildings.'' The granting of the exemption allows the changes to Tier 1 information asked for in the amendment. Because the acceptability of the exemption was determined in part by the acceptability of the amendment, the exemption and amendment are being issued concurrently.
Federal Register 2010, 2011, 2012, 2013, 2014
2013-07-30
...The U.S. Nuclear Regulatory Commission (NRC) is granting both an exemption to allow a departure from the certification information of Tier 1 of the generic design control document (DCD) and is issuing License Amendment No. 8 to Combined Licenses (COL), NPF-91 and NPF-92. The COLs were issued to Southern Nuclear Operating Company, Inc., and Georgia Power Company, Oglethorpe Power Corporation, Municipal Electric Authority of Georgia, and the City of Dalton, Georgia (the licensee); for construction and operation of the Vogtle Electric Generating Plant (VEGP), Units 3 and 4, located in Burke County, Georgia. The amendment requests to revise the design of the bracing used to support the Turbine Building structure. This request requires changing Tier 1 information found in the Design Description portion of Updated Final Safety Analysis Report (UFSAR) Section 3.3, ``Buildings.'' The granting of the exemption allows the changes to Tier 1 information asked for in the amendment. Because the acceptability of the exemption was determined in part by the acceptability of the amendment, the exemption and amendment are being issued concurrently.
NASA Technical Reports Server (NTRS)
Hooker, Stanford B. (Editor); Firestone, Elaine R. (Editor); OReilly, John E.; Maritorena, Stephane; OBrien, Margaret C.; Siegel, David A.; Toole, Dierdre; Mueller, James L.; Mitchell, B. Greg; Kahru, Mati;
2000-01-01
Volume 11 continues the sequential presentation of postlaunch data analysis and algorithm descriptions begun in Volume 9. Chapters 1 and 2 present the OC2 (version 2) and OC4 (version 4) chlorophyll a algorithms used in the SeaWiFS data second and third reprocessings, August 1998 and May 2000, respectively. Chapter 3 describes a revision of the K(490) algorithm designed to use water-leaving radiances at 490 nm which was implemented for the third reprocessing. Finally, Chapter 4 is an analysis of in situ radiometer calibration data over several years at the University of California, Santa Barbara (UCSB) to establish the temporal consistency of their in-water optical measurements.
Welding at the Kennedy Space Center.
NASA Technical Reports Server (NTRS)
Clautice, W. E.
1973-01-01
Brief description of the nature of the mechanical equipment at a space launch complex from a welding viewpoint. including an identification of the major welding applications used in the construction of this complex. The role played by welding in the ground support equipment is noted, including the welded structures and systems required in the vehicle assembly building, the mobile launchers, transporters, mobile service structure, launch pad and launch site, the propellants system, the pneumatics system, and the environmental control system. The welding processes used at the Kennedy Space Center are reviewed, and a particularly detailed account is given of the design and fabrication of the liquid hydrogen and liquid oxygen storage spheres and piping. Finally, the various methods of testing and inspecting the storage spheres are cited.
A Review of the CMOS Buried Double Junction (BDJ) Photodetector and its Applications
Feruglio, Sylvain; Lu, Guo-Neng; Garda, Patrick; Vasilescu, Gabriel
2008-01-01
A CMOS Buried Double Junction PN (BDJ) photodetector consists of two vertically-stacked photodiodes. It can be operated as a photodiode with improved performance and wavelength-sensitive response. This paper presents a review of this device and its applications. The CMOS implementation and operating principle are firstly described. This includes the description of several key aspects directly related to the device performances, such as surface reflection, photon absorption and electron-hole pair generation, photocurrent and dark current generation, etc. SPICE modelling of the detector is then presented. Next, design and process considerations are proposed in order to improve the BDJ performance. Finally, several BDJ-detector-based image sensors provide a survey of their applications. PMID:27873887
Balcazar, H; Alvarado, M; Ortiz, G
2011-01-01
This article describes 6 Salud Para Su Corazon (SPSC) family of programs that have addressed cardiovascular disease risk reduction in Hispanic communities facilitated by community health workers (CHWs) or Promotores de Salud (PS). A synopsis of the programs illustrates the designs and methodological approaches that combine community-based participatory research for 2 types of settings: community and clinical. Examples are provided as to how CHWs can serve as agents of change in these settings. A description is presented of a sustainability framework for the SPSC family of programs. Finally, implications are summarized for utilizing the SPSC CHW/PS model to inform ambulatory care management and policy.
76 FR 15216 - Security Zones; Cruise Ships, Port of San Diego, CA
Federal Register 2010, 2011, 2012, 2013, 2014
2011-03-21
...The Coast Guard is amending its regulations for Security Zones; Cruise Ships, Port of San Diego, California, by providing a common description of all security zones created by this section to encompass only navigable waters within a 100 yard radius around any cruise ship that is located within the San Diego port area landward of the sea buoys bounding the Port of San Diego. This final rule removes a reference to shore area that is no longer necessary to provide for the safety of the cruise ship, vessels, and users of the waterway. Entry into these security zones will be prohibited unless specifically authorized by the Captain of the Port (COTP) San Diego, or a COTP designated representative.
Apollo experience report: Television system
NASA Technical Reports Server (NTRS)
Coan, P. P.
1973-01-01
The progress of the Apollo television systems from the early definition of requirements through the development and inflight use of color television hardware is presented. Television systems that have been used during the Apollo Program are discussed, beginning with a description of the specifications for each system. The document describes the technical approach taken for the development of each system and discusses the prototype and engineering hardware built to test the system itself and to perform the testing to verify compatibility with the spacecraft systems. Problems that occurred during the design and development phase are described. Finally, the flight hardware, operational characteristics, and performance during several Apollo missions are described, and specific recommendations for the remaining Apollo flights and future space missions are made.
Portable Life Support Subsystem Thermal Hydraulic Performance Analysis
NASA Technical Reports Server (NTRS)
Barnes, Bruce; Pinckney, John; Conger, Bruce
2010-01-01
This paper presents the current state of the thermal hydraulic modeling efforts being conducted for the Constellation Space Suit Element (CSSE) Portable Life Support Subsystem (PLSS). The goal of these efforts is to provide realistic simulations of the PLSS under various modes of operation. The PLSS thermal hydraulic model simulates the thermal, pressure, flow characteristics, and human thermal comfort related to the PLSS performance. This paper presents modeling approaches and assumptions as well as component model descriptions. Results from the models are presented that show PLSS operations at steady-state and transient conditions. Finally, conclusions and recommendations are offered that summarize results, identify PLSS design weaknesses uncovered during review of the analysis results, and propose areas for improvement to increase model fidelity and accuracy.
Die Starter: A New System to Manage Early Feasibility in Sheet Metal Forming
NASA Astrophysics Data System (ADS)
Narainen, Rodrigue; Porzner, Harald
2016-08-01
Die Starter, a new system developed by ESI Group, allows the user to drastically reduce the number of iterations during the early tool process feasibility. This innovative system automatically designs the first quick die face, generating binder and addendum surfaces (NURBS surfaces) by taking account the full die process. Die Starter also improves the initial die face based on feasibility criteria (avoiding splits, wrinkles) by automatically generating the geometrical modifications of the binder and addendum and the bead restraining forces with minimal material usage. This paper presents a description of the new system and the methodology of Die Starter. Some industrial examples are presented from the part geometry to final die face including automatic developed flanges, part on binder and inner binder.
Oak Ridge TNS Program: system description manual
DOE Office of Scientific and Technical Information (OSTI.GOV)
Reid, R.L.; Becraft, W.R.; Brown, T.G.
1979-05-01
This document provides a systems description of the Reference Design for The Next Step (TNS) evolved at Oak Ridge National Laboratory (ORNL) during FY 1978. The description is presented on the basis of 24 individual device and facility systems. Additional information on these systems, the Reference Design, and the FY 1978 Oak Ridge TNS activities can be found in the associated technical memoranda, ORNL/TM-6720 and ORNL/TM-6722--ORNL/TM-6733.
NASA Technical Reports Server (NTRS)
LaBel, Kenneth A.; Ladbury, Ray; Oldhamm, Timothy
2010-01-01
As NASA has evolved it's usage of spaceflight computing, memory applications have followed as well. In this slide presentation, the history of NASA's memories from magnetic core and tape recorders to current semiconductor approaches is discussed. There is a brief description of current functional memory usage in NASA space systems followed by a description of potential radiation-induced failure modes along with considerations for reliable system design.
Reliability prediction of large fuel cell stack based on structure stress analysis
NASA Astrophysics Data System (ADS)
Liu, L. F.; Liu, B.; Wu, C. W.
2017-09-01
The aim of this paper is to improve the reliability of Proton Electrolyte Membrane Fuel Cell (PEMFC) stack by designing the clamping force and the thickness difference between the membrane electrode assembly (MEA) and the gasket. The stack reliability is directly determined by the component reliability, which is affected by the material property and contact stress. The component contact stress is a random variable because it is usually affected by many uncertain factors in the production and clamping process. We have investigated the influences of parameter variation coefficient on the probability distribution of contact stress using the equivalent stiffness model and the first-order second moment method. The optimal contact stress to make the component stay in the highest level reliability is obtained by the stress-strength interference model. To obtain the optimal contact stress between the contact components, the optimal thickness of the component and the stack clamping force are optimally designed. Finally, a detailed description is given how to design the MEA and gasket dimensions to obtain the highest stack reliability. This work can provide a valuable guidance in the design of stack structure for a high reliability of fuel cell stack.
Oceanographic scanner system design study, volume 1
NASA Technical Reports Server (NTRS)
1971-01-01
The design is reported of a dual mode multispectral scanner, capable of satisfying both overland and oceanographic requirements. A complete system description and performance summary of the scanner are given. In addition, subsystem and component descriptions and performance analyses are treated in individual sections. The design of the scanner, with minimum modifications, interfaces to the ERTS spacecraft and the ground data handling system.
Federal Register 2010, 2011, 2012, 2013, 2014
2013-01-25
... of Board of Directors'' on http://www.exim.gov/articles.cfm/board%20minute . Confidential Information...-proprietary description of the anticipated use of the items being exported: To be used for short- and medium.... Guarantor(s): N/A. Description of Items Being Exported: Boeing 737 aircraft. Information on Decision...
The Use Of Double Pulsed Holography For On-Site Vibration Analysis
NASA Astrophysics Data System (ADS)
Tyrer, John R.
1985-06-01
A description is given of a laser system used to produce interferograms of a large centrifugal compressor, powered by an industrial gas turbine engine with a dominant system response at 168Hz. The results demonstrate a travelling wave generated within the feed pipe to the compressor. Finally the description of a potential real time double pulse systeu is presented.
DOE Office of Scientific and Technical Information (OSTI.GOV)
None
1981-10-29
This volume is the software description for the National Utility Regulatory Model (NUREG). This is the third of three volumes provided by ICF under contract number DEAC-01-79EI-10579. These three volumes are: a manual describing the NUREG methodology; a users guide; and a description of the software. This manual describes the software which has been developed for NUREG. This includes a listing of the source modules. All computer code has been written in FORTRAN.
47 CFR 1.363 - Introduction of statistical data.
Code of Federal Regulations, 2010 CFR
2010-10-01
... case of sample surveys, there shall be a clear description of the survey design, including the... evidence in common carrier hearing proceedings, including but not limited to sample surveys, econometric... description of the experimental design shall be set forth, including a specification of the controlled...
47 CFR 1.363 - Introduction of statistical data.
Code of Federal Regulations, 2013 CFR
2013-10-01
... case of sample surveys, there shall be a clear description of the survey design, including the... evidence in common carrier hearing proceedings, including but not limited to sample surveys, econometric... description of the experimental design shall be set forth, including a specification of the controlled...
47 CFR 1.363 - Introduction of statistical data.
Code of Federal Regulations, 2014 CFR
2014-10-01
... case of sample surveys, there shall be a clear description of the survey design, including the... evidence in common carrier hearing proceedings, including but not limited to sample surveys, econometric... description of the experimental design shall be set forth, including a specification of the controlled...
47 CFR 1.363 - Introduction of statistical data.
Code of Federal Regulations, 2012 CFR
2012-10-01
... case of sample surveys, there shall be a clear description of the survey design, including the... evidence in common carrier hearing proceedings, including but not limited to sample surveys, econometric... description of the experimental design shall be set forth, including a specification of the controlled...
47 CFR 1.363 - Introduction of statistical data.
Code of Federal Regulations, 2011 CFR
2011-10-01
... case of sample surveys, there shall be a clear description of the survey design, including the... evidence in common carrier hearing proceedings, including but not limited to sample surveys, econometric... description of the experimental design shall be set forth, including a specification of the controlled...
Minding the Gap: Narrative Descriptions about Mental States Attenuate Parochial Empathy
Bruneau, Emile G.; Cikara, Mina; Saxe, Rebecca
2015-01-01
In three experiments, we examine parochial empathy (feeling more empathy for in-group than out-group members) across novel group boundaries, and test whether we can mitigate parochial empathy with brief narrative descriptions. In the absence of individuating information, participants consistently report more empathy for members of their own assigned group than a competitive out-group. However, individualized descriptions of in-group and out-group targets significantly reduce parochial empathy by interfering with encoding of targets’ group membership. Finally, the descriptions that most effectively decrease parochial empathy are those that describe targets’ mental states. These results support the role of individuating information in ameliorating parochial empathy, suggest a mechanism for their action, and show that descriptions emphasizing targets’ mental states are particularly effective. PMID:26505194
Hardware synthesis from DDL. [Digital Design Language for computer aided design and test of LSI
NASA Technical Reports Server (NTRS)
Shah, A. M.; Shiva, S. G.
1981-01-01
The details of the digital systems can be conveniently input into the design automation system by means of Hardware Description Languages (HDL). The Computer Aided Design and Test (CADAT) system at NASA MSFC is used for the LSI design. The Digital Design Language (DDL) has been selected as HDL for the CADAT System. DDL translator output can be used for the hardware implementation of the digital design. This paper addresses problems of selecting the standard cells from the CADAT standard cell library to realize the logic implied by the DDL description of the system.
The language parallel Pascal and other aspects of the massively parallel processor
NASA Technical Reports Server (NTRS)
Reeves, A. P.; Bruner, J. D.
1982-01-01
A high level language for the Massively Parallel Processor (MPP) was designed. This language, called Parallel Pascal, is described in detail. A description of the language design, a description of the intermediate language, Parallel P-Code, and details for the MPP implementation are included. Formal descriptions of Parallel Pascal and Parallel P-Code are given. A compiler was developed which converts programs in Parallel Pascal into the intermediate Parallel P-Code language. The code generator to complete the compiler for the MPP is being developed independently. A Parallel Pascal to Pascal translator was also developed. The architecture design for a VLSI version of the MPP was completed with a description of fault tolerant interconnection networks. The memory arrangement aspects of the MPP are discussed and a survey of other high level languages is given.
Planetary surface exploration MESUR/autonomous lunar rover
NASA Astrophysics Data System (ADS)
Stauffer, Larry; Dilorenzo, Matt; Austin, Dave; Ayers, Raymond; Burton, David; Gaylord, Joe; Kennedy, Jim; Laux, Richard; Lentz, Dale; Nance, Preston
Planetary surface exploration micro-rovers for collecting data about the Moon and Mars have been designed by the Department of Mechanical Engineering at the University of Idaho. The goal of both projects was to design a rover concept that best satisfied the project objectives for NASA/Ames. A second goal was to facilitate student learning about the process of design. The first micro-rover is a deployment mechanism for the Mars Environmental Survey (MESUR) Alpha Particle/Proton/X-ray (APX) Instrument. The system is to be launched with the 16 MESUR landers around the turn of the century. A Tubular Deployment System and a spiked-legged walker have been developed to deploy the APX from the lander to the Martian Surface. While on Mars, the walker is designed to take the APX to rocks to obtain elemental composition data of the surface. The second micro-rover is an autonomous, roving vehicle to transport a sensor package over the surface of the moon. The vehicle must negotiate the lunar terrain for a minimum of one year by surviving impacts and withstanding the environmental extremes. The rover is a reliable track-driven unit that operates regardless of orientation that NASA can use for future lunar exploratory missions. This report includes a detailed description of the designs and the methods and procedures which the University of Idaho design teams followed to arrive at the final designs.
Planetary surface exploration: MESUR/autonomous lunar rover
NASA Astrophysics Data System (ADS)
Stauffer, Larry; Dilorenzo, Matt; Austin, Dave; Ayers, Raymond; Burton, David; Gaylord, Joe; Kennedy, Jim; Lentz, Dale; Laux, Richard; Nance, Preston
1992-06-01
Planetary surface exploration micro-rovers for collecting data about the Moon and Mars was designed by the Department of Mechanical Engineering at the University of Idaho. The goal of both projects was to design a rover concept that best satisfied the project objectives for NASA-Ames. A second goal was to facilitate student learning about the process of design. The first micro-rover is a deployment mechanism for the Mars Environmental SURvey (MESUR) Alpha Particle/Proton/X-ray instruments (APX). The system is to be launched with the sixteen MESUR landers around the turn of the century. A Tubular Deployment System and a spiked-legged walker was developed to deploy the APX from the lander to the Martian surface. While on Mars the walker is designed to take the APX to rocks to obtain elemental composition data of the surface. The second micro-rover is an autonomous, roving vehicle to transport a sensor package over the surface of the moon. The vehicle must negotiate the lunar-terrain for a minimum of one year by surviving impacts and withstanding the environmental extremes. The rover is a reliable track-driven unit that operates regardless of orientation which NASA can use for future lunar exploratory missions. A detailed description of the designs, methods, and procedures which the University of Idaho design teams followed to arrive at the final designs are included.
Planetary surface exploration MESUR/autonomous lunar rover
NASA Technical Reports Server (NTRS)
Stauffer, Larry; Dilorenzo, Matt; Austin, Dave; Ayers, Raymond; Burton, David; Gaylord, Joe; Kennedy, Jim; Laux, Richard; Lentz, Dale; Nance, Preston
1992-01-01
Planetary surface exploration micro-rovers for collecting data about the Moon and Mars have been designed by the Department of Mechanical Engineering at the University of Idaho. The goal of both projects was to design a rover concept that best satisfied the project objectives for NASA/Ames. A second goal was to facilitate student learning about the process of design. The first micro-rover is a deployment mechanism for the Mars Environmental Survey (MESUR) Alpha Particle/Proton/X-ray (APX) Instrument. The system is to be launched with the 16 MESUR landers around the turn of the century. A Tubular Deployment System and a spiked-legged walker have been developed to deploy the APX from the lander to the Martian Surface. While on Mars, the walker is designed to take the APX to rocks to obtain elemental composition data of the surface. The second micro-rover is an autonomous, roving vehicle to transport a sensor package over the surface of the moon. The vehicle must negotiate the lunar terrain for a minimum of one year by surviving impacts and withstanding the environmental extremes. The rover is a reliable track-driven unit that operates regardless of orientation that NASA can use for future lunar exploratory missions. This report includes a detailed description of the designs and the methods and procedures which the University of Idaho design teams followed to arrive at the final designs.
Planetary surface exploration: MESUR/autonomous lunar rover
NASA Technical Reports Server (NTRS)
Stauffer, Larry; Dilorenzo, Matt; Austin, Dave; Ayers, Raymond; Burton, David; Gaylord, Joe; Kennedy, Jim; Lentz, Dale; Laux, Richard; Nance, Preston
1992-01-01
Planetary surface exploration micro-rovers for collecting data about the Moon and Mars was designed by the Department of Mechanical Engineering at the University of Idaho. The goal of both projects was to design a rover concept that best satisfied the project objectives for NASA-Ames. A second goal was to facilitate student learning about the process of design. The first micro-rover is a deployment mechanism for the Mars Environmental SURvey (MESUR) Alpha Particle/Proton/X-ray instruments (APX). The system is to be launched with the sixteen MESUR landers around the turn of the century. A Tubular Deployment System and a spiked-legged walker was developed to deploy the APX from the lander to the Martian surface. While on Mars the walker is designed to take the APX to rocks to obtain elemental composition data of the surface. The second micro-rover is an autonomous, roving vehicle to transport a sensor package over the surface of the moon. The vehicle must negotiate the lunar-terrain for a minimum of one year by surviving impacts and withstanding the environmental extremes. The rover is a reliable track-driven unit that operates regardless of orientation which NASA can use for future lunar exploratory missions. A detailed description of the designs, methods, and procedures which the University of Idaho design teams followed to arrive at the final designs are included.
ERIC Educational Resources Information Center
Levitt-Merin, Marta; Sutter, Sharon Kingdon
This final report provides a descriptive overview of three approaches which the Hawaii Demonstration Project initiated to reduce unintended teenage pregnancies. Project evaluation findings are summarized; both qualitative and quantitative data are presented for a comprehensive picture of the project and its input. Project limitations and successes…
Providing Computer-Based Information Services to an Academic Community. Final Technical Report.
ERIC Educational Resources Information Center
Bayer, Bernard
The Mechanized Information Center (MIC) at the Ohio State University conducts retrospective and current awareness searches for faculty, students, and staff using data bases for agriculture, chemistry, education, psychology, and social sciences, as well as a multidisciplinary data base. The final report includes (1) a description of the background…
Waste Package Component Design Methodology Report
DOE Office of Scientific and Technical Information (OSTI.GOV)
D.C. Mecham
2004-07-12
This Executive Summary provides an overview of the methodology being used by the Yucca Mountain Project (YMP) to design waste packages and ancillary components. This summary information is intended for readers with general interest, but also provides technical readers a general framework surrounding a variety of technical details provided in the main body of the report. The purpose of this report is to document and ensure appropriate design methods are used in the design of waste packages and ancillary components (the drip shields and emplacement pallets). The methodology includes identification of necessary design inputs, justification of design assumptions, and usemore » of appropriate analysis methods, and computational tools. This design work is subject to ''Quality Assurance Requirements and Description''. The document is primarily intended for internal use and technical guidance for a variety of design activities. It is recognized that a wide audience including project management, the U.S. Department of Energy (DOE), the U.S. Nuclear Regulatory Commission, and others are interested to various levels of detail in the design methods and therefore covers a wide range of topics at varying levels of detail. Due to the preliminary nature of the design, readers can expect to encounter varied levels of detail in the body of the report. It is expected that technical information used as input to design documents will be verified and taken from the latest versions of reference sources given herein. This revision of the methodology report has evolved with changes in the waste package, drip shield, and emplacement pallet designs over many years and may be further revised as the design is finalized. Different components and analyses are at different stages of development. Some parts of the report are detailed, while other less detailed parts are likely to undergo further refinement. The design methodology is intended to provide designs that satisfy the safety and operational requirements of the YMP. Four waste package configurations have been selected to illustrate the application of the methodology during the licensing process. These four configurations are the 21-pressurized water reactor absorber plate waste package (21-PWRAP), the 44-boiling water reactor waste package (44-BWR), the 5 defense high-level radioactive waste (HLW) DOE spent nuclear fuel (SNF) codisposal short waste package (5-DHLWDOE SNF Short), and the naval canistered SNF long waste package (Naval SNF Long). Design work for the other six waste packages will be completed at a later date using the same design methodology. These include the 24-boiling water reactor waste package (24-BWR), the 21-pressurized water reactor control rod waste package (21-PWRCR), the 12-pressurized water reactor waste package (12-PWR), the 5 defense HLW DOE SNF codisposal long waste package (5-DHLWDOE SNF Long), the 2 defense HLW DOE SNF codisposal waste package (2-MC012-DHLW), and the naval canistered SNF short waste package (Naval SNF Short). This report is only part of the complete design description. Other reports related to the design include the design reports, the waste package system description documents, manufacturing specifications, and numerous documents for the many detailed calculations. The relationships between this report and other design documents are shown in Figure 1.« less
Comparative analysis of linear motor geometries for Stirling coolers
NASA Astrophysics Data System (ADS)
R, Rajesh V.; Kuzhiveli, Biju T.
2017-12-01
Compared to rotary motor driven Stirling coolers, linear motor coolers are characterized by small volume and long life, making them more suitable for space and military applications. The motor design and operational characteristics have a direct effect on the operation of the cooler. In this perspective, ample scope exists in understanding the behavioural description of linear motor systems. In the present work, the authors compare and analyze different moving magnet linear motor geometries to finalize the most favourable one for Stirling coolers. The required axial force in the linear motors is generated by the interaction of magnetic fields of a current carrying coil and that of a permanent magnet. The compact size, commercial availability of permanent magnets and low weight requirement of the system are quite a few constraints for the design. The finite element analysis performed using Maxwell software serves as the basic tool to analyze the magnet movement, flux distribution in the air gap and the magnetic saturation levels on the core. A number of material combinations are investigated for core before finalizing the design. The effect of varying the core geometry on the flux produced in the air gap is also analyzed. The electromagnetic analysis of the motor indicates that the permanent magnet height ought to be taken in such a way that it is under the influence of electromagnetic field of current carrying coil as well as the outer core in the balanced position. This is necessary so that sufficient amount of thrust force is developed by efficient utilisation of the air gap flux density. Also, the outer core ends need to be designed to facilitate enough room for the magnet movement under the operating conditions.
Computational Modeling as a Design Tool in Microelectronics Manufacturing
NASA Technical Reports Server (NTRS)
Meyyappan, Meyya; Arnold, James O. (Technical Monitor)
1997-01-01
Plans to introduce pilot lines or fabs for 300 mm processing are in progress. The IC technology is simultaneously moving towards 0.25/0.18 micron. The convergence of these two trends places unprecedented stringent demands on processes and equipments. More than ever, computational modeling is called upon to play a complementary role in equipment and process design. The pace in hardware/process development needs a matching pace in software development: an aggressive move towards developing "virtual reactors" is desirable and essential to reduce design cycle and costs. This goal has three elements: reactor scale model, feature level model, and database of physical/chemical properties. With these elements coupled, the complete model should function as a design aid in a CAD environment. This talk would aim at the description of various elements. At the reactor level, continuum, DSMC(or particle) and hybrid models will be discussed and compared using examples of plasma and thermal process simulations. In microtopography evolution, approaches such as level set methods compete with conventional geometric models. Regardless of the approach, the reliance on empricism is to be eliminated through coupling to reactor model and computational surface science. This coupling poses challenging issues of orders of magnitude variation in length and time scales. Finally, database development has fallen behind; current situation is rapidly aggravated by the ever newer chemistries emerging to meet process metrics. The virtual reactor would be a useless concept without an accompanying reliable database that consists of: thermal reaction pathways and rate constants, electron-molecule cross sections, thermochemical properties, transport properties, and finally, surface data on the interaction of radicals, atoms and ions with various surfaces. Large scale computational chemistry efforts are critical as experiments alone cannot meet database needs due to the difficulties associated with such controlled experiments and costs.
Integrating Design and Manufacturing for a High Speed Civil Transport Wing
NASA Technical Reports Server (NTRS)
Marx, William J.; Mavris, Dimitri N.; Schrage, Daniel P.
1994-01-01
The aerospace industry is currently addressing the problem of integrating design and manufacturing. Because of the difficulties associated with using conventional, procedural techniques and algorithms, it is the authors' belief that the only feasible way to integrate the two concepts is with the development of an appropriate Knowledge-Based System (KBS). The authors propose a methodology for an aircraft producibility assessment, including a KBS, that addresses both procedural and heuristic aspects of integrating design and manufacturing of a High Speed Civil Transport (HSCT) wing. The HSCT was chosen as the focus of this investigation since it is a current NASA/aerospace industry initiative full of technological challenges involving many disciplines. The paper gives a brief background of selected previous supersonic transport studies followed by descriptions of key relevant design and manufacturing methodologies. Georgia Tech's Concurrent Engineering/Integrated Product and Process Development methodology is discussed with reference to this proposed conceptual producibility assessment. Evaluation criteria are presented that relate pertinent product and process parameters to overall product producibility. In addition, the authors' integration methodology and reasons for selecting a KBS to integrate design and manufacturing are presented in this paper. Finally, a proposed KBS is given, as well as statements of future work and overall investigation objectives.
Design of the advanced regional aircraft, the DART-75
NASA Technical Reports Server (NTRS)
Elliot, Steve; Gislason, Jason; Huffstetler, Mark; Mann, Jon; Withers, Ashley; Zimmerman, Mark
1992-01-01
The need for regional aircraft stems from the problem of hub airport congestion. Regional travel will allow a passenger to commute from one spoke city to another spoke city without entering the congested hub airport. In addition, those people traveling longer routes may begin the flight at home instead of traveling to the hub airport. At this time, there is no American aerospace company that produces a regional transport for under 100 passengers. The intention of the Developmental Advanced Regional Transport (DART-75) is to fill this void with a modern, efficient regional aircraft. This design achieves the efficiency through a number of advanced features including three lifting surfaces, partial composite construction, and an advanced engine design. Efficiency is not the only consideration. Structural integrity, fatigue life, ease of maintenance, passenger comfort and convenience, and environmental aspects must all be considered. These factors force the design team to face many tradeoffs that are studied to find the best solution. The final consideration that cannot be overlooked is that of cost. The DART-75 is a 75-passenger medium-range regional transport intended for spoke-to-spoke, spoke-to-hub, and some hub-to-hub operations. Included are the general descriptions of the structures, weight and balance, stability and control, performance, and engine design.
Building international experiences into an engineering curriculum - a design project-based approach
NASA Astrophysics Data System (ADS)
Maldonado, Victor; Castillo, Luciano; Carbajal, Gerardo; Hajela, Prabhat
2014-07-01
This paper is a descriptive account of how short-term international and multicultural experiences can be integrated into early design experiences in an aerospace engineering curriculum. Such approaches are considered as important not only in fostering a student's interest in the engineering curriculum, but also exposing them to a multicultural setting that they are likely to encounter in their professional careers. In the broader sense, this programme is described as a model that can be duplicated in other engineering disciplines as a first-year experience. In this study, undergraduate students from Rensselaer Polytechnic Institute (RPI) and Universidad del Turabo (UT) in Puerto Rico collaborated on a substantial design project consisting of designing, fabricating, and flight-testing radio-controlled model aircraft as a capstone experience in a semester-long course on Fundamentals of Flight. The two-week long experience in Puerto Rico was organised into academic and cultural components designed with the following objectives: (i) to integrate students in a multicultural team-based academic and social environment, (ii) to practise team-building skills and develop students' critical thinking and analytical skills, and finally (iii) to excite students about their engineering major through practical applications of aeronautics and help them decide if it is a right fit for them.
Design and Fabrication of a Composite Morphing Radiator Panel Using High Conductivity Fibers
NASA Technical Reports Server (NTRS)
Wescott, Matthew T.; McQuien, J. Scott; Bertagne, Christopher L.; Whitcomb, John D.; Hart, Darren J.; Erickson, Lisa R.
2017-01-01
Upcoming crewed space missions will involve large internal and external heat loads and require advanced thermal control systems to maintain a desired internal environment temperature. Radiators with at least 12:1 turndown ratios (the ratio between the maximum and minimum heat rejection rates) will be needed. However, current technologies are only able to achieve turndown ratios of approximately 3:1. A morphing radiator capable of altering shape could significantly increase turndown capabilities. Shape memory alloys offer qualities that may be well suited for this endeavor; their temperature-dependent phase changes could offer radiators the ability to passively control heat rejection. In 2015, a morphing radiator prototype was constructed and tested in a thermal vacuum environment, where it successfully demonstrated the morphing behavior and variable heat rejection. Newer composite prototypes have since been designed and manufactured using two distinct types of SMA materials. These models underwent temperature cycling tests in a thermal vacuum chamber and a series of fatigue tests to characterize the lifespan of these designs. The focus of this paper is to present the design approach and testing of the morphing composite facesheet. The discussion includes: an overall description of the project background, definition of performance requirements, composite materials selection, use of analytic and numerical design tools, facesheet fabrication, and finally fatigue testing with accompanying results.
Gallagher, Katherine E; Howard, Natasha; Kabakama, Severin; Mounier-Jack, Sandra; Burchett, Helen E D; LaMontagne, D Scott; Watson-Jones, Deborah
2017-12-01
Since 2007, HPV vaccine has been available to low and middle income countries (LAMIC) for small-scale 'demonstration projects', or national programmes. We analysed coverage achieved in HPV vaccine demonstration projects and national programmes that had completed at least 6 months of implementation between January 2007-2016. A mapping exercise identified 45 LAMICs with HPV vaccine delivery experience. Estimates of coverage and factors influencing coverage were obtained from 56 key informant interviews, a systematic published literature search of 5 databases that identified 61 relevant full texts and 188 solicited unpublished documents, including coverage surveys. Coverage achievements were analysed descriptively against country or project/programme characteristics. Heterogeneity in data, funder requirements, and project/programme design precluded multivariate analysis. Estimates of uptake, schedule completion rates and/or final dose coverage were available from 41 of 45 LAMICs included in the study. Only 17 estimates from 13 countries were from coverage surveys, most were administrative data. Final dose coverage estimates were all over 50% with most between 70% and 90%, and showed no trend over time. The majority of delivery strategies included schools as a vaccination venue. In countries with school enrolment rates below 90%, inclusion of strategies to reach out-of-school girls contributed to obtaining high coverage compared to school-only strategies. There was no correlation between final dose coverage and estimated recurrent financial costs of delivery from cost analyses. Coverage achieved during joint delivery of HPV vaccine combined with another intervention was variable with little/no evaluation of the correlates of success. This is the most comprehensive descriptive analysis of HPV vaccine coverage in LAMICs to date. It is possible to deliver HPV vaccine with excellent coverage in LAMICs. Further good quality data are needed from health facility based delivery strategies and national programmes to aid policymakers to effectively and sustainably scale-up HPV vaccination. Copyright © 2017 The Authors. Published by Elsevier B.V. All rights reserved.
Water Resources Research Grant Program Project Descriptions: Fiscal Year 1988
Lew, Melvin; McCoy, Beverly M.
1989-01-01
This report contains information on the 38 new projects funded by the U.S. Geological Survey's Water Resources Research Grant Program in fiscal year 1988 and on 11 projects completed during the year. For the new projects, the report gives the grant number, project title, performing organization, principal investigator(s), project duration, and a project description that includes: (1) identification of water-related problems and problem-solution approach, (2) contribution to problem solution, (3) objectives, and (4) approach. The 38 projects include 14 in the area of ground-water quality problems, 10 in the science and technology of water-quality management, 4 in climate variability and the hydrologic cycle, 7 in institutional change in water-resources management, and 3 in miscellaneous water-resources management problems. For the 11 completed projects, the report gives the grant number, project title, performing organization, principal investigator(s), starting date, date of receipt of final report, and an abstract of the final report. Each project description provides the information needed to obtain a copy of the final report. The report also contains tables showing (1) proposals received according to area of research interest, (2) grant awards and funding according to area of research interest, (3) proposals received according to type of submitting organization, and (4) awards and funding according to type of organization.
Water Resources Research Grant Program project descriptions, fiscal year 1987
,
1987-01-01
This report contains information on the 34 new projects funded by the United States Geological Survey 's Water Resources Research Grant Program in fiscal year 1987 and on 3 projects completed during the year. For the new projects, the report gives the grant number, project title, performing organization, principal investigator(s), and a project description that includes: (1) identification of water related problems and problem-solution approach (2) contribution to problem solution, (3) objectives, and (4) approach. The 34 projects include 12 in the area of groundwater quality problems, 12 in the science and technology of water quality management, 1 in climate variability and the hydrologic cycle, 4 in institutional change in water resources management, and 5 in surface water management. For the three completed projects, the report furnishes the grant number; project title; performing organization; principal investor(s); starting data; data of receipt of final report; and an abstract of the final report. Each project description provides the information needed to obtain a copy of the final report. The report contains tables showing: (1) proposals received according to area of research interest, (2) grant awards and funding according to area of research interest, (3) proposals received according to type of submitting organization, and (4) awards and funding according to type of organization. (Author 's abstract)
A UML model for the description of different brain-computer interface systems.
Quitadamo, Lucia Rita; Abbafati, Manuel; Saggio, Giovanni; Marciani, Maria Grazia; Cardarilli, Gian Carlo; Bianchi, Luigi
2008-01-01
BCI research lacks a universal descriptive language among labs and a unique standard model for the description of BCI systems. This results in a serious problem in comparing performances of different BCI processes and in unifying tools and resources. In such a view we implemented a Unified Modeling Language (UML) model for the description virtually of any BCI protocol and we demonstrated that it can be successfully applied to the most common ones such as P300, mu-rhythms, SCP, SSVEP, fMRI. Finally we illustrated the advantages in utilizing a standard terminology for BCIs and how the same basic structure can be successfully adopted for the implementation of new systems.
NASA Astrophysics Data System (ADS)
Kelly, Jamie S.; Bowman, Hiroshi C.; Rao, Vittal S.; Pottinger, Hardy J.
1997-06-01
Implementation issues represent an unfamiliar challenge to most control engineers, and many techniques for controller design ignore these issues outright. Consequently, the design of controllers for smart structural systems usually proceeds without regard for their eventual implementation, thus resulting either in serious performance degradation or in hardware requirements that squander power, complicate integration, and drive up cost. The level of integration assumed by the Smart Patch further exacerbates these difficulties, and any design inefficiency may render the realization of a single-package sensor-controller-actuator system infeasible. The goal of this research is to automate the controller implementation process and to relieve the design engineer of implementation concerns like quantization, computational efficiency, and device selection. We specifically target Field Programmable Gate Arrays (FPGAs) as our hardware platform because these devices are highly flexible, power efficient, and reprogrammable. The current study develops an automated implementation sequence that minimizes hardware requirements while maintaining controller performance. Beginning with a state space representation of the controller, the sequence automatically generates a configuration bitstream for a suitable FPGA implementation. MATLAB functions optimize and simulate the control algorithm before translating it into the VHSIC hardware description language. These functions improve power efficiency and simplify integration in the final implementation by performing a linear transformation that renders the controller computationally friendly. The transformation favors sparse matrices in order to reduce multiply operations and the hardware necessary to support them; simultaneously, the remaining matrix elements take on values that minimize limit cycles and parameter sensitivity. The proposed controller design methodology is implemented on a simple cantilever beam test structure using FPGA hardware. The experimental closed loop response is compared with that of an automated FPGA controller implementation. Finally, we explore the integration of FPGA based controllers into a multi-chip module, which we believe represents the next step towards the realization of the Smart Patch.
NASA Technical Reports Server (NTRS)
Jovic, Srboljub
2015-01-01
This document provides the software design description for the two core software components, the LVC Gateway, the LVC Gateway Toolbox, and two participants, the LVC Gateway Data Logger and the SAA Processor (SaaProc).
ERIC Educational Resources Information Center
Naval Training Equipment Center, Orlando, FL. Training Analysis and Evaluation Group.
The Design of Training Systems (DOTS) project was initiated by the Department of Defense (DOD) to develop tools for the effective management of military training organizations. Volume 3 contains the model and data base program descriptions and operating procedures designed for phase 2 of the project. Flow charts and program listings for the…
Atmosphere Explorer (AE) spacecraft system description
NASA Technical Reports Server (NTRS)
1972-01-01
The principal design and performance characteristics of the AE spacecraft system designed to support the Atmosphere Explorer C, D, and E missions are summarized. It has been prepared for the information of experimenters and other participants in the Atmosphere Explorer program as a general guide for design and operational planning. The description represents the spacecraft system as defined at the conclusion of the interface definition study.
ERBE and CERES broadband scanning radiometers
NASA Technical Reports Server (NTRS)
Weaver, William L.; Cooper, John E.
1990-01-01
Broadband scanning radiometers have been used extensively on earth-orbiting satellites to measure the Earth's outgoing radiation. The resulting estimates of longwave and shortwave fluxes have played an important role in helping to understand the Earth's radiant energy balance or budget. The Clouds and the Earth Radiant Energy System (CERES) experiment is expected to include instruments with three broadband scanning radiometers. The design of the CERES instrument will draw heavily from the flight-proven Earth Radiation Budget Experiment (ERBE) scanner instrument technology and will benefit from the several years of ERBE experience in mission operations and data processing. The discussion starts with a description of the scientific objectives of ERBE and CERES. The design and operational characteristics of the ERBE and CERES instrument are compared and the two ground-based data processing systems are compared. Finally, aspects of the CERES data processing which might be performed in near real-time aboard a spacecraft platform are discussed, and the types of algorithms and input data requirements for the onboard processing system are identified.
NASA Astrophysics Data System (ADS)
Lhomé, Emilie; Agócs, Tibor; Abrams, Don Carlos; Dee, Kevin M.; Middleton, Kevin F.; Tosh, Ian A.; Jaskó, Attila; Connor, Peter; Cochrane, Dave; Gers, Luke; Jonas, Graeme; Rakich, Andrew; Benn, Chris R.; Balcells, Marc; Trager, Scott C.; Dalton, Gavin B.; Carrasco, Esperanza; Vallenari, Antonella; Bonifacio, Piercarlo; Aguerri, J. Alfonso L.
2016-07-01
In this paper, we detail the manufacturing process for the lenses that will constitute the new two-degree field-of-view Prime Focus Corrector (PFC) for the 4.2m William Herschel Telescope (WHT) optimised for the upcoming WEAVE Multi-Object Spectroscopy (MOS) facility. The corrector, including an Atmospheric Dispersion Corrector (ADC), is made of six large lenses, the largest being 1.1-meter diameter. We describe how the prescriptions of the optical design were translated into manufacturing specifications for the blanks and lenses. We explain how the as-built glass blank parameters were fed back into the optical design and how the specifications for the lenses were subsequently modified. We review the critical issues for the challenging manufacturing process and discuss the trade-offs that were necessary to deliver the lenses while maintaining the optimal optical performance. A short description of the lens optical testing is also presented. Finally, the subsequent manufacturing steps, including assembly, integration, and alignment are outlined.
Modeling Negotiation by a Paticipatory Approach
NASA Astrophysics Data System (ADS)
Torii, Daisuke; Ishida, Toru; Bousquet, François
In a participatory approach by social scientists, role playing games (RPG) are effectively used to understand real thinking and behavior of stakeholders, but RPG is not sufficient to handle a dynamic process like negotiation. In this study, a participatory simulation where user-controlled avatars and autonomous agents coexist is introduced to the participatory approach for modeling negotiation. To establish a modeling methodology of negotiation, we have tackled the following two issues. First, for enabling domain experts to concentrate interaction design for participatory simulation, we have adopted the architecture in which an interaction layer controls agents and have defined three types of interaction descriptions (interaction protocol, interaction scenario and avatar control scenario) to be described. Second, for enabling domain experts and stakeholders to capitalize on participatory simulation, we have established a four-step process for acquiring negotiation model: 1) surveys and interviews to stakeholders, 2) RPG, 3) interaction design, and 4) participatory simulation. Finally, we discussed our methodology through a case study of agricultural economics in the northeast Thailand.
An Advanced Photovoltaic Array Regulator Module
NASA Technical Reports Server (NTRS)
Button, Robert M.
1996-01-01
Current trends in satellite design are focused on developing small, reliable, and inexpensive spacecraft. To that end, a modular power management and distribution system is proposed which will help transition the aerospace industry towards an assembly line approach to building spacecraft. The modular system is based on an innovative DC voltage boost converter called the Series Connected Boost Unit (SCBU). The SCBU uses any isolating DC-DC converter and adds a unique series connection. This simple modification provides the SCBU topology with many advantages over existing boost converters. Efficiencies of 94-98%, power densities above 1,000 W/kg, and inherent fault tolerance are just a few of the characteristics presented. Limitations of the SCBU technology are presented, and it is shown that the SCBU makes an ideal photovoltaic an-ay regulator. A set of photovoltaic power system requirements are presented that can be applied to almost any low Earth orbit satellite. Finally, a modular design based on the series connected boost unit is outlined and functional descriptions of the components are given.
Analysis of post-mining excavations as places for municipal waste
NASA Astrophysics Data System (ADS)
Górniak-Zimroz, Justyna
2018-01-01
Waste management planning is an interdisciplinary task covering a wide range of issues including costs, legal requirements, spatial planning, environmental protection, geography, demographics, and techniques used in collecting, transporting, processing and disposing of waste. Designing and analyzing this issue is difficult and requires the use of advanced analysis methods and tools available in GIS geographic information systems containing readily available graphical and descriptive databases, data analysis tools providing expert decision support while selecting the best-designed alternative, and simulation models that allow the user to simulate many variants of waste management together with graphical visualization of the results of performed analyzes. As part of the research study, there have been works undertaken concerning the use of multi-criteria data analysis in waste management in areas located in southwestern Poland. These works have proposed the inclusion in waste management of post-mining excavations as places for the final or temporary collection of waste assessed in terms of their suitability with the tools available in GIS systems.
Patient safety and patient assessment in pre-hospital care: a study protocol.
Hagiwara, Magnus Andersson; Nilsson, Lena; Strömsöe, Anneli; Axelsson, Christer; Kängström, Anna; Herlitz, Johan
2016-02-12
Patient safety issues in pre-hospital care are poorly investigated. The aim of the planned study is to survey patient safety problems in pre-hospital care in Sweden. The study is a retro-perspective structured medical record review based on the use of 11 screening criteria. Two instruments for structured medical record review are used: a trigger tool instrument designed for pre-hospital care and a newly development instrument designed to compare the pre-hospital assessment with the final hospital assessment. Three different ambulance organisations are participating in the study. Every month, one rater in each organisation randomly collects 30 medical records for review. With guidance from the review instrument, he/she independently reviews the record. Every month, the review team meet for a discussion of problematic reviews. The results will be analysed with descriptive statistics and logistic regression. The findings will make an important contribution to knowledge about patient safety issues in pre-hospital care.
Middleton, A; Bragin, E; Parker, M
2014-10-01
This paper offers a description of how social media, traditional media and direct invitation were used as tools for the recruitment of 6,944 research participants for a social sciences study on genomics. The remit was to gather the views of various stakeholders towards sharing incidental findings from whole genome studies. This involved recruiting members of the public, genetic health professionals, genomic researchers and non-genetic health professionals. A novel survey was designed that contained ten integrated films; this was made available online and open for completion by anyone worldwide. The recruitment methods are described together with the convenience and snowballing sampling framework. The most successful strategy involved the utilisation of social media; Facebook, Blogging, Twitter, LinkedIn and Google Ads led to the ascertainment of over 75 % of the final sample. We conclude that the strategies used were successful in recruiting in eclectic mix of appropriate participants. Design of the survey and results from the study are presented separately.
A Method of Separation Assurance for Instrument Flight Procedures at Non-Radar Airports
NASA Technical Reports Server (NTRS)
Conway, Sheila R.; Consiglio, Maria
2002-01-01
A method to provide automated air traffic separation assurance services during approach to or departure from a non-radar, non-towered airport environment is described. The method is constrained by provision of these services without radical changes or ambitious investments in current ground-based technologies. The proposed procedures are designed to grant access to a large number of airfields that currently have no or very limited access under Instrument Flight Rules (IFR), thus increasing mobility with minimal infrastructure investment. This paper primarily addresses a low-cost option for airport and instrument approach infrastructure, but is designed to be an architecture from which a more efficient, albeit more complex, system may be developed. A functional description of the capabilities in the current NAS infrastructure is provided. Automated terminal operations and procedures are introduced. Rules of engagement and the operations are defined. Results of preliminary simulation testing are presented. Finally, application of the method to more terminal-like operations, and major research areas, including necessary piloted studies, are discussed.
Corpus-Based Approaches to Language Description for Specialized Academic Writing
ERIC Educational Resources Information Center
Flowerdew, John
2017-01-01
Language description is a fundamental requirement for second language (L2) syllabus design. The greatest advances in language description in recent decades have been done with the help of electronic corpora. Such language description is the theme of this article. The article first introduces some basic concepts and principles in corpus research.…
ERIC Educational Resources Information Center
Muhammad, Anas Sa'idu; Nair, Subadrah Madhawa
2017-01-01
This study investigates the level of pragmatic competence for ESL writing skills among Nigerian undergraduates. Methodologically, it adopts descriptive research design within the explanatory framework of the QUAN-Qual model. The instruments used are descriptive essay text and focus group interview questions. In writing the descriptive essays, a…
Comparing Freshman and doctoral engineering students in design: mapping with a descriptive framework
NASA Astrophysics Data System (ADS)
Carmona Marques, P.
2017-11-01
This paper reports the results of a study of engineering students' approaches to an open-ended design problem. To carry out this, sketches and interviews were collected from 9 freshmen (first year) and 10 doctoral engineering students, when they designed solutions for orange squeezers. Sketches and interviews were analysed and mapped with a descriptive 'ideation framework' (IF) of the design process, to document and compare their design creativity (Carmona Marques, P., A. Silva, E. Henriques, and C. Magee. 2014. "A Descriptive Framework of the Design Process from a Dual Cognitive Engineering Perspective." International Journal of Design Creativity and Innovation 2 (3): 142-164). The results show that the designers worked in a manner largely consistent with the IF for generalisation and specialisation loops. Also, doctoral students produced more alternative solutions during the ideation process. In addition, compared to freshman, doctoral used the generalisation loop of the IF, working at higher levels of abstraction. The iterative nature of design is highlighted during this study - a potential contribution to decrease the gap between both groups in engineering education.
Selb, Melissa; Gimigliano, Francesca; Prodinger, Birgit; Stucki, Gerold; Pestelli, Germano; Iocco, Maurizio; Boldrini, Paolo
2017-04-01
As part of international efforts to develop and implement national models including the specification of ICF-based clinical data collection tools, the Italian rehabilitation community initiated a project to develop simple, intuitive descriptions of the ICF Rehabilitation Set, highlighting the core concept of each category in user-friendly language. This paper outlines the Italian experience in developing simple, intuitive descriptions of the ICF Rehabilitation Set as an ICF-based clinical data collection tool for Italy. Consensus process. Expert conference. Multidisciplinary group of rehabilitation professionals. The first of a two-stage consensus process involved developing an initial proposal for simple, intuitive descriptions of each ICF Rehabilitation Set category based on descriptions generated in a similar process in China. Stage two involved a consensus conference. Divided into three working groups, participants discussed and voted (vote A) whether the initially proposed descriptions of each ICF Rehabilitation Set category was simple and intuitive enough for use in daily practice. Afterwards the categories with descriptions considered ambiguous i.e. not simple and intuitive enough, were divided among the working groups, who were asked to propose a new description for the allocated categories. These proposals were then voted (vote B) on in a plenary session. The last step of the consensus conference required each working group to develop a new proposal for each and the same categories with descriptions still considered ambiguous. Participants then voted (final vote) for which of the three proposed descriptions they preferred. Nineteen clinicians from diverse rehabilitation disciplines from various regions of Italy participated in the consensus process. Three ICF categories already achieved consensus in vote A, while 20 ICF categories were accepted in vote B. The remaining 7 categories were decided in the final vote. The findings were discussed in light of current efforts toward developing strategies for ICF implementation, specifically for the application of an ICF-based clinical data collection tool, not only for Italy but also for the rest of Europe. Promising as minimal standards for monitoring the impact of interventions and for standardized reporting of functioning as a relevant outcome in rehabilitation.
2015-03-01
109 8.0 Arts, Design, Entertainment, Media, Sports , and Recreation 100 7.4 Information Technology 86 6.3 Office and Administrative Support 74 5.5...55 4.1 Government and Public Administration 35 2.6 Community and Social Service 29 2.1 Manufacturing 29 2.1 Hospitality and Tourism 25 1.8...playing a sport ; exercising; or doing yard work or housework. % Not descriptive of me % Somewhat descriptive of me % Very descriptive of me N/A
System Design Description for the TMAD Code
DOE Office of Scientific and Technical Information (OSTI.GOV)
Finfrock, S.H.
This document serves as the System Design Description (SDD) for the TMAD Code System, which includes the TMAD code and the LIBMAKR code. The SDD provides a detailed description of the theory behind the code, and the implementation of that theory. It is essential for anyone who is attempting to review or modify the code or who otherwise needs to understand the internal workings of the code. In addition, this document includes, in Appendix A, the System Requirements Specification for the TMAD System.
NASA Technical Reports Server (NTRS)
Buck, C. H.
1975-01-01
The program documentation for the PRF ARTWORK/AIDS conversion program, which serves as the interface between the outputs of the PRF ARTWORK and AIDS programs, was presented. The document has a two-fold purpose, the first of which is a description of the software design including flowcharts of the design at the functional level. The second purpose is to provide the user with a detailed description of the input parameters and formats necessary to execute the program and a description of the output produced when the program is executed.
NASA Astrophysics Data System (ADS)
García, Aday; Santos, Lucana; López, Sebastián.; Callicó, Gustavo M.; Lopez, Jose F.; Sarmiento, Roberto
2014-05-01
Efficient onboard satellite hyperspectral image compression represents a necessity and a challenge for current and future space missions. Therefore, it is mandatory to provide hardware implementations for this type of algorithms in order to achieve the constraints required for onboard compression. In this work, we implement the Lossy Compression for Exomars (LCE) algorithm on an FPGA by means of high-level synthesis (HSL) in order to shorten the design cycle. Specifically, we use CatapultC HLS tool to obtain a VHDL description of the LCE algorithm from C-language specifications. Two different approaches are followed for HLS: on one hand, introducing the whole C-language description in CatapultC and on the other hand, splitting the C-language description in functional modules to be implemented independently with CatapultC, connecting and controlling them by an RTL description code without HLS. In both cases the goal is to obtain an FPGA implementation. We explain the several changes applied to the original Clanguage source code in order to optimize the results obtained by CatapultC for both approaches. Experimental results show low area occupancy of less than 15% for a SRAM-based Virtex-5 FPGA and a maximum frequency above 80 MHz. Additionally, the LCE compressor was implemented into an RTAX2000S antifuse-based FPGA, showing an area occupancy of 75% and a frequency around 53 MHz. All these serve to demonstrate that the LCE algorithm can be efficiently executed on an FPGA onboard a satellite. A comparison between both implementation approaches is also provided. The performance of the algorithm is finally compared with implementations on other technologies, specifically a graphics processing unit (GPU) and a single-threaded CPU.
An improved resource management model based on MDS
NASA Astrophysics Data System (ADS)
Yuan, Man; Sun, Changying; Li, Pengfei; Sun, Yongdong; He, Rui
2005-11-01
GRID technology provides a kind of convenient method for managing GRID resources. This service is so-called monitoring, discovering service. This method is proposed by Globus Alliance, in this GRID environment, all kinds of resources, such as computational resources, storage resources and other resources can be organized by MDS specifications. However, this MDS is a theory framework, particularly, in a small world intranet, in the case of limit of resources, the MDS has its own limitation. Based on MDS, an improved light method for managing corporation computational resources and storage resources is proposed in intranet(IMDS). Firstly, in MDS, all kinds of resource description information is stored in LDAP, it is well known although LDAP is a light directory access protocol, in practice, programmers rarely master how to access and store resource information into LDAP store, in such way, it limits MDS to be used. So, in intranet, these resources' description information can be stored in RDBMS, programmers and users can access this information by standard SQL. Secondly, in MDS, how to monitor all kinds of resources in GRID is not transparent for programmers and users. In such way, it limits its application scope, in general, resource monitoring method base on SNMP is widely employed in intranet, therefore, a kind of resource monitoring method based on SNMP is integrated into MDS. Finally, all kinds of resources in the intranet can be described by XML, and all kinds of resources' description information is stored in RDBMS, such as MySql, and retrieved by standard SQL, dynamic information for all kinds of resources can be sent to resource storage by SNMP, A prototype resource description, monitoring is designed and implemented in intranet.
Oil in Ice Project Final Report
2018-03-01
describes the various field technology demonstrations and provides an appendix with a description of 11 tactics using the most promising response...This report describes the various field technology demonstrations and provides an appendix with a description of 11 tactics using the most promising...water. RDC developed and evaluated two prototype temporary storage containers that could be mounted on the deck of a WLB. The tie-down method still
Urban Principle of Water Sensitive Design in Kampung Kamboja at Pontianak City
NASA Astrophysics Data System (ADS)
Hasriyanti, N.; Ryanti, E.
2017-07-01
This study will define the design principles of settlement area banks of the Kapuas Pontianak to approach the concept of water sensitive urban design (WSUD) in densely populated residential areas. Using a case study of a region densely located on the banks of the river with engineering literature to formulate the aspects taken into consideration and the components are arranged in the design, analysis descriptive paradigm rationalistic to identify the characteristics of residential areas riverbank with consideration of elements WSUD and formulate design principles residential area that is sensitive to water. This research is important to do because of problems related to the water management system in the settlement bank of the river in the city of Pontianak do not maximize. So that the primacy of this study contains several objectives to be achieved is to identify the characteristics of the settlement area riverbanks under consideration aspects areas design that is sensitive to water and principle areas design that will formulate the structure of the existing problems related to the needs of the community infrastructure facilities infrastructure neighborhoods and formulate and create guidelines for appropriate technology for integrated water management systems in the residential area of the riverbank and engineering design for the settlements are sensitive to water (WSUD). The final aim of the study is expected to achieve water management systems in residential areas by utilizing the abundant rainwater availability by using LID (Low Impact Development) through the concept of urban design that sensitive water
40 CFR 270.19 - Specific part B information requirements for incinerators.
Code of Federal Regulations, 2014 CFR
2014-07-01
...) Nozzle and burner design. (ix) Construction materials. (x) Location and description of temperature... burn data are provided. (4) The design and operating conditions of the incinerator unit to be used, compared with that for which comparative burn data are available. (5) A description of the results...
40 CFR 270.19 - Specific part B information requirements for incinerators.
Code of Federal Regulations, 2010 CFR
2010-07-01
...) Nozzle and burner design. (ix) Construction materials. (x) Location and description of temperature... burn data are provided. (4) The design and operating conditions of the incinerator unit to be used, compared with that for which comparative burn data are available. (5) A description of the results...
48 CFR 1352.271-85 - Documentation of requests for equitable adjustment.
Code of Federal Regulations, 2013 CFR
2013-10-01
... installation of such property shall be indicated. A separate description shall be furnished for design and... design work and production work; (4) A description of any interference or inefficiency encountered in...-referenced to the detailed information required above; and (9) A statement setting forth a comparative...
48 CFR 1352.271-85 - Documentation of requests for equitable adjustment.
Code of Federal Regulations, 2012 CFR
2012-10-01
... installation of such property shall be indicated. A separate description shall be furnished for design and... design work and production work; (4) A description of any interference or inefficiency encountered in...-referenced to the detailed information required above; and (9) A statement setting forth a comparative...
40 CFR 270.19 - Specific part B information requirements for incinerators.
Code of Federal Regulations, 2013 CFR
2013-07-01
...) Nozzle and burner design. (ix) Construction materials. (x) Location and description of temperature... burn data are provided. (4) The design and operating conditions of the incinerator unit to be used, compared with that for which comparative burn data are available. (5) A description of the results...
40 CFR 270.19 - Specific part B information requirements for incinerators.
Code of Federal Regulations, 2011 CFR
2011-07-01
...) Nozzle and burner design. (ix) Construction materials. (x) Location and description of temperature... burn data are provided. (4) The design and operating conditions of the incinerator unit to be used, compared with that for which comparative burn data are available. (5) A description of the results...
48 CFR 1352.271-85 - Documentation of requests for equitable adjustment.
Code of Federal Regulations, 2011 CFR
2011-10-01
... installation of such property shall be indicated. A separate description shall be furnished for design and... design work and production work; (4) A description of any interference or inefficiency encountered in...-referenced to the detailed information required above; and (9) A statement setting forth a comparative...
48 CFR 1352.271-85 - Documentation of requests for equitable adjustment.
Code of Federal Regulations, 2010 CFR
2010-10-01
... installation of such property shall be indicated. A separate description shall be furnished for design and... design work and production work; (4) A description of any interference or inefficiency encountered in...-referenced to the detailed information required above; and (9) A statement setting forth a comparative...
48 CFR 1352.271-85 - Documentation of requests for equitable adjustment.
Code of Federal Regulations, 2014 CFR
2014-10-01
... installation of such property shall be indicated. A separate description shall be furnished for design and... design work and production work; (4) A description of any interference or inefficiency encountered in...-referenced to the detailed information required above; and (9) A statement setting forth a comparative...
40 CFR 270.19 - Specific part B information requirements for incinerators.
Code of Federal Regulations, 2012 CFR
2012-07-01
...) Nozzle and burner design. (ix) Construction materials. (x) Location and description of temperature... burn data are provided. (4) The design and operating conditions of the incinerator unit to be used, compared with that for which comparative burn data are available. (5) A description of the results...
NASA Astrophysics Data System (ADS)
Yi, Chen; Isaev, A. E.; Yuebing, Wang; Enyakov, A. M.; Teng, Fei; Matveev, A. N.
2011-01-01
A description is given of the COOMET project 473/RU-a/09: a pilot comparison of hydrophone calibrations at frequencies from 250 Hz to 200 kHz between Hangzhou Applied Acoustics Research Institute (HAARI, China)—pilot laboratory—and Russian National Research Institute for Physicotechnical and Radio Engineering Measurements (VNIIFTRI, Designated Institute of Russia of the CIPM MRA). Two standard hydrophones, B&K 8104 and TC 4033, were calibrated and compared to assess the current state of hydrophone calibration of HAARI (China) and Russia. Three different calibration methods were applied: a vibrating column method, a free-field reciprocity method and a comparison method. The standard facilities of each laboratory were used, and three different sound fields were applied: pressure field, free-field and reverberant field. The maximum deviation of the sensitivities of two hydrophones between the participants' results was 0.36 dB. Main text. To reach the main text of this paper, click on Final Report. The final report has been peer-reviewed and approved for publication by the CCAUV-KCWG.
Sundqvist, Ann-Sofie; Anderzén-Carlsson, Agneta; Nilsson, Ulrica; Holmefur, Marie
2018-02-01
To translate and adapt the Protective Nursing Advocacy Scale (PNAS) into a Swedish version (PNAS-Swe), evaluate its psychometric properties, and describe registered nurse anesthetists' (RNAs) advocacy beliefs and actions from a protective perspective. A cross-sectional design was used. First, the PNAS was translated into Swedish. Next, the content and construct validity of the PNAS four subscales was evaluated. Finally, the PNAS-Swe was used to describe Swedish RNA beliefs and actions regarding protective nursing advocacy. The final PNAS-Swe has 29 items in four subscales. The RNAs reported that they feel that they should provide protective nursing advocacy for their patients. There were no differences in gender, or associations with age, or work experience regarding their advocacy beliefs or actions. The PNAS-Swe is valid for use in a Swedish context. Protective nursing advocacy is important to the RNAs, which is in congruence with earlier qualitative studies. Copyright © 2016 American Society of PeriAnesthesia Nurses. Published by Elsevier Inc. All rights reserved.
ATLAS, an integrated structural analysis and design system. Volume 2: System design document
NASA Technical Reports Server (NTRS)
Erickson, W. J. (Editor)
1979-01-01
ATLAS is a structural analysis and design system, operational on the Control Data Corporation 6600/CYBER computers. The overall system design, the design of the individual program modules, and the routines in the ATLAS system library are described. The overall design is discussed in terms of system architecture, executive function, data base structure, user program interfaces and operational procedures. The program module sections include detailed code description, common block usage and random access file usage. The description of the ATLAS program library includes all information needed to use these general purpose routines.
Kuijpers, Wilma; Groen, Wim G; Oldenburg, Hester Sa; Wouters, Michel Wjm; Aaronson, Neil K; van Harten, Wim H
2015-01-22
MijnAVL (MyAVL) is an interactive portal being developed to empower cancer survivors. Literature review and focus groups yielded the selection of features such as access to the electronic medical record (EMR), patient reported outcomes (PROs) and related feedback, and a physical activity support program. Our aim was to present a final design of MijnAVL based on (1) health professionals' evaluation of proposed features, (2) cancer survivors' evaluation of a first draft, and (3) cancer survivors' evaluation of a functional online prototype. Professionals from various disciplines gave input to the content of and procedures related to MijnAVL. Subsequently, 16 cancer survivors participated in an interview to evaluate content and graphic design of a first draft (shown with screenshots). Finally, 7 survivors participated in a usability test with a fully functional prototype. They performed predefined tasks (eg, logging in, finding a test result, completing a questionnaire) while thinking aloud. Descriptive statistics and simple content analysis were used to analyze the data of both the interviews and the usability tests. Professionals supported access to the EMR (eg, histology reports, lab results, and their letters to general practitioners). They also informed the development of PROs and the physical activity support program. Based on the first draft, survivors selected the preferred graphic design, approved the features and provided suggestions for the content (eg, explanation of medical jargon, more concise texts, notification by emails). Usability tests revealed that it was relatively easy to navigate the website and use the different features. Recommendations included, among others, a frequently asked questions section and the use of hyperlinks between different parts of the website. The development of MijnAVL, an interactive portal to empower breast and lung cancer survivors, was performed iteratively and involved multiple groups of end-users. This approach resulted in a usable and understandable final version. Its effectiveness should be determined in further research.
Kuijpers, Wilma; Groen, Wim G; Oldenburg, Hester SA; Wouters, Michel WJM; Aaronson, Neil K
2015-01-01
Background MijnAVL (MyAVL) is an interactive portal being developed to empower cancer survivors. Literature review and focus groups yielded the selection of features such as access to the electronic medical record (EMR), patient reported outcomes (PROs) and related feedback, and a physical activity support program. Objective Our aim was to present a final design of MijnAVL based on (1) health professionals' evaluation of proposed features, (2) cancer survivors’ evaluation of a first draft, and (3) cancer survivors’ evaluation of a functional online prototype. Methods Professionals from various disciplines gave input to the content of and procedures related to MijnAVL. Subsequently, 16 cancer survivors participated in an interview to evaluate content and graphic design of a first draft (shown with screenshots). Finally, 7 survivors participated in a usability test with a fully functional prototype. They performed predefined tasks (eg, logging in, finding a test result, completing a questionnaire) while thinking aloud. Descriptive statistics and simple content analysis were used to analyze the data of both the interviews and the usability tests. Results Professionals supported access to the EMR (eg, histology reports, lab results, and their letters to general practitioners). They also informed the development of PROs and the physical activity support program. Based on the first draft, survivors selected the preferred graphic design, approved the features and provided suggestions for the content (eg, explanation of medical jargon, more concise texts, notification by emails). Usability tests revealed that it was relatively easy to navigate the website and use the different features. Recommendations included, among others, a frequently asked questions section and the use of hyperlinks between different parts of the website. Conclusions The development of MijnAVL, an interactive portal to empower breast and lung cancer survivors, was performed iteratively and involved multiple groups of end-users. This approach resulted in a usable and understandable final version. Its effectiveness should be determined in further research. PMID:25614924
Helminen, Kristiina; Johnson, Martin; Isoaho, Hannu; Turunen, Hannele; Tossavainen, Kerttu
2017-12-01
To describe the phenomenon of final assessment of the clinical practice of nursing students and to examine whether there were differences in assessments by the students and their teachers and mentors. Final assessment of students in clinical practice during their education has great importance for ensuring that enough high-quality nursing students are trained, as assessment tasks affect what the nursing student learns during the clinical practice. This study used descriptive, cross-sectional design. The population of this study comprised nursing students (n = 276) and their teachers (n = 108) in five universities of applied sciences in Finland as well as mentors (n = 225) who came from five partner hospitals. A questionnaire developed for this study contained questions about background variables as well as structured questions scored on a four-point scale, which also allowed the respondents to provide additional comments. When comparing the results related to nursing teachers' presence in the final assessment situation, it was found that teachers and mentors evaluated this as being carried out more often than nursing students suggested. Nursing students noted that fair and consistent assessment is carried out more often than nursing teachers thought. Mentors and teachers said that honest and direct criteria-based final assessment was carried out more often than nursing students evaluated. Nursing students and mentors need support from educational institutions and from nursing teachers in order to ensure the completion of a relevant assessment process. The findings of this study highlight an awareness of final assessment process. It is desirable to have a common understanding, for example, of how the assessment should be managed and what the assessment criteria are, as this will ensure a good quality process. © 2017 John Wiley & Sons Ltd.
Launch Vehicle Design Process Description and Training Formulation
NASA Technical Reports Server (NTRS)
Atherton, James; Morris, Charles; Settle, Gray; Teal, Marion; Schuerer, Paul; Blair, James; Ryan, Robert; Schutzenhofer, Luke
1999-01-01
A primary NASA priority is to reduce the cost and improve the effectiveness of launching payloads into space. As a consequence, significant improvements are being sought in the effectiveness, cost, and schedule of the launch vehicle design process. In order to provide a basis for understanding and improving the current design process, a model has been developed for this complex, interactive process, as reported in the references. This model requires further expansion in some specific design functions. Also, a training course for less-experienced engineers is needed to provide understanding of the process, to provide guidance for its effective implementation, and to provide a basis for major improvements in launch vehicle design process technology. The objective of this activity is to expand the description of the design process to include all pertinent design functions, and to develop a detailed outline of a training course on the design process for launch vehicles for use in educating engineers whose experience with the process has been minimal. Building on a previously-developed partial design process description, parallel sections have been written for the Avionics Design Function, the Materials Design Function, and the Manufacturing Design Function. Upon inclusion of these results, the total process description will be released as a NASA TP. The design function sections herein include descriptions of the design function responsibilities, interfaces, interactive processes, decisions (gates), and tasks. Associated figures include design function planes, gates, and tasks, along with other pertinent graphics. Also included is an expanded discussion of how the design process is divided, or compartmentalized, into manageable parts to achieve efficient and effective design. A detailed outline for an intensive two-day course on the launch vehicle design process has been developed herein, and is available for further expansion. The course is in an interactive lecture/workshop format to engage the participants in active learning. The course addresses the breadth and depth of the process, requirements, phases, participants, multidisciplinary aspects, tasks, critical elements,as well as providing guidance from previous lessons learned. The participants are led to develop their own understanding of the current process and how it can be improved. Included are course objectives and a session-by-session outline of course content. Also included is an initial identification of visual aid requirements.
Agile, a guiding principle for health care improvement?
Tolf, Sara; Nyström, Monica E; Tishelman, Carol; Brommels, Mats; Hansson, Johan
2015-01-01
The purpose of this paper is to contribute to increased understanding of the concept agile and its potential for hospital managers to optimize design of organizational structures and processes to combine internal efficiency and external effectiveness. An integrative review was conducted using the reSEARCH database. Articles met the following criteria: first, a definition of agility; second, descriptions of enablers of becoming an agile organization; and finally, discussions of agile on multiple organizational levels. In total, 60 articles qualified for the final analysis. Organizational agility rests on the assumption that the environment is uncertain, ranging from frequently changing to highly unpredictable. Proactive, reactive or embracive coping strategies were described as possible ways to handle such uncertain environments. Five organizational capacities were derived as necessary for hospitals to use the strategies optimally: transparent and transient inter-organizational links; market sensitivity and customer focus; management by support for self-organizing employees; organic structures that are elastic and responsive; flexible human and resource capacity for timely delivery. Agile is portrayed as either the "new paradigm" following lean, the needed development on top of a lean base, or as complementary to lean in distinct hybrid strategies. Environmental uncertainty needs to be matched with coping strategies and organizational capacities to design processes responsive to real needs of health care. This implies that lean and agile can be combined to optimize the design of hospitals, to meet different variations in demand and create good patient management. While considerable value has been paid to strategies to improve the internal efficiency within hospitals, this review raise the attention to the value of strategies of external effectiveness.
Systematic Review of the profile of emergency contraception users
Amengual, Maria de Lluc Bauzà; Canto, Magdalena Esteva; Berenguer, Inmaculada Pereiro; Pol, Maria Ingla
2016-01-01
Abastract Objective: to discern the profile of the Spanish Emergency Contraceptive users (EC). Design: systematic review of contraceptive use in the Spanish population. Data Source: Spanish and international databases, between January 2006 - March 2011. Keywords: Contraceptives, Postcoital pills, emergency contraception, levonorgestrel, data collection. Study selection: original papers, letters to the editor in which stated aims were the description, prediction or measurement of variables related to EC use. Twenty-two papers were retrieved and fourteen were finally selected, all of which were descriptive. Data extraction: manuscripts were evaluated by two independent reviewers. Results: Women requesting EC have ages between 21-24 years, mostly single and university students; declare that they have not previously used EC, and attend an Emergency department, at weekends and within 48 hours following unprotected sexual intercourse. The reason is condom rupture. None of the studies reviewed measured alcohol and other drug consumption, the number of sexual partners, nor any of the studies performed a comparison with a group not using EC. Conclusions: lack of homogeneity and comprehensiveness of studied variables resulted in a limited profile of Spanish EC users. Further studies are needed with a more comprehensive approach if sexual health interventions are to be carried out in possible users. PMID:27384470
Survey Data for Geomagnetic Field Modelling
NASA Technical Reports Server (NTRS)
Barraclough, D. R.; Macmillan, S.
1992-01-01
The survey data discussed here are based on observations made relatively recently at points on land. A special subset of land survey data consists of those made at specially designated sites known as repeat stations. This class of data will be discussed in another part of this document (Barton, 1991b), so only the briefest of references will be made to repeat stations here. This discussion of 'ordinary' land survey data begins with a description of the spatial and temporal distributions of available survey data based on observations made since 1900. (The reason for this rather arbitrary choice of cut-off date is that this was the value used in the production of the computer file of magnetic survey data (land, sea, air, satellite, rocket) that is the primary source of data for geomagnetic main-field modeling). This is followed by a description of the various types of error to which these survey data are, or may be, subject and a discussion of the likely effects of such errors on field models produced from the data. Finally, there is a short section on the availability of geomagnetic survey data, which also describes how the data files are maintained.
NASA Astrophysics Data System (ADS)
Egwolf, Bernhard; Tavan, Paul
2004-01-01
We extend our continuum description of solvent dielectrics in molecular-dynamics (MD) simulations [B. Egwolf and P. Tavan, J. Chem. Phys. 118, 2039 (2003)], which has provided an efficient and accurate solution of the Poisson equation, to ionic solvents as described by the linearized Poisson-Boltzmann (LPB) equation. We start with the formulation of a general theory for the electrostatics of an arbitrarily shaped molecular system, which consists of partially charged atoms and is embedded in a LPB continuum. This theory represents the reaction field induced by the continuum in terms of charge and dipole densities localized within the molecular system. Because these densities cannot be calculated analytically for systems of arbitrary shape, we introduce an atom-based discretization and a set of carefully designed approximations. This allows us to represent the densities by charges and dipoles located at the atoms. Coupled systems of linear equations determine these multipoles and can be rapidly solved by iteration during a MD simulation. The multipoles yield the reaction field forces and energies. Finally, we scrutinize the quality of our approach by comparisons with an analytical solution restricted to perfectly spherical systems and with results of a finite difference method.
NASA Astrophysics Data System (ADS)
Soare, S.; Yoon, J. W.; Cazacu, O.
2007-05-01
With few exceptions, non-quadratic homogeneous polynomials have received little attention as possible candidates for yield functions. One reason might be that not every such polynomial is a convex function. In this paper we show that homogeneous polynomials can be used to develop powerful anisotropic yield criteria, and that imposing simple constraints on the identification process leads, aposteriori, to the desired convexity property. It is shown that combinations of such polynomials allow for modeling yielding properties of metallic materials with any crystal structure, i.e. both cubic and hexagonal which display strength differential effects. Extensions of the proposed criteria to 3D stress states are also presented. We apply these criteria to the description of the aluminum alloy AA2090T3. We prove that a sixth order orthotropic homogeneous polynomial is capable of a satisfactory description of this alloy. Next, applications to the deep drawing of a cylindrical cup are presented. The newly proposed criteria were implemented as UMAT subroutines into the commercial FE code ABAQUS. We were able to predict six ears on the AA2090T3 cup's profile. Finally, we show that a tension/compression asymmetry in yielding can have an important effect on the earing profile.
Wood-Nartker, B Jeanneane; Sepanski, Jungsywan; McCrady, Joe; Gligor, Andreea
2007-06-01
To examine perceptions of design professionals, this study was designed to examine possible gender-bias based on job title and description and whether there is a relationship between the two perceptions. A respondent's sex was significantly related to perceptions of a design professional's sex. Both respondents' sex and the perceived sex of the design professional had significant effects on the perceived sexual orientation of the design professionals. Furthermore, the results also indicated that if the design professional was perceived to be male, there was a higher tendency that he would be perceived as homosexual, especially by a male respondent.
Federal Register 2010, 2011, 2012, 2013, 2014
2011-04-11
..., these descriptions are general in nature and, we believe, far less descriptive than those presented in... distribution inlets is more descriptive of the actual distribution of these whales and the essential feature... anadromous fish utilizing these waters would not change the list, but could only add another descriptive...
ERIC Educational Resources Information Center
LYNN, FRANK
THE APPENDIXES FOR "AN INVESTIGATION OF THE TRAINING AND SKILL REQUIREMENTS OF INDUSTRIAL MACHINERY MAINTENANCE WORKERS, FINAL REPORT, VOLUME I" (VT 004 006) INCLUDE (1) TWO LETTERS FROM PLANT ENGINEERS STRESSING THE IMPORTANCE OF TRAINING MACHINERY MAINTENANCE WORKERS, (2) A DESCRIPTION OF THE MAINTENANCE TRAINING SURVEY, A SAMPLE QUESTIONNAIRE,…
Penetrating School Strata through Career Education. Final Report.
ERIC Educational Resources Information Center
Nolan, Richard D.
This is a final report of a 3-year project to modify the curriculum in the Bristol, Connecticut, school system by infusing career education concepts and practices into all subjects at all grade levels. The report includes a description of the four components of the project: Grades K-8, grades 9-12, development of job placement services, and…
An Evaluation of Non-Formal Education in Ecuador. Volume 4: Appendices. Final Report.
ERIC Educational Resources Information Center
Laosa, Luis M.; And Others
As the final volume in a 4-volume evaluation report on the University of Massachusetts Non-Formal Education Project (UMass NFEP) initiated in rural Ecuador in 1973, this volume presents appendices to volumes I-III. Appendix A includes the following items: (1) Community Demographic Profile; (2) Description of Introduction to the Community; (3)…
A Tool for the Automated Design and Evaluation of Habitat Interior Layouts
NASA Technical Reports Server (NTRS)
Simon, Matthew A.; Wilhite, Alan W.
2013-01-01
The objective of space habitat design is to minimize mass and system size while providing adequate space for all necessary equipment and a functional layout that supports crew health and productivity. Unfortunately, development and evaluation of interior layouts is often ignored during conceptual design because of the subjectivity and long times required using current evaluation methods (e.g., human-in-the-loop mockup tests and in-depth CAD evaluations). Early, more objective assessment could prevent expensive design changes that may increase vehicle mass and compromise functionality. This paper describes a new interior design evaluation method to enable early, structured consideration of habitat interior layouts. This interior layout evaluation method features a comprehensive list of quantifiable habitat layout evaluation criteria, automatic methods to measure these criteria from a geometry model, and application of systems engineering tools and numerical methods to construct a multi-objective value function measuring the overall habitat layout performance. In addition to a detailed description of this method, a C++/OpenGL software tool which has been developed to implement this method is also discussed. This tool leverages geometry modeling coupled with collision detection techniques to identify favorable layouts subject to multiple constraints and objectives (e.g., minimize mass, maximize contiguous habitable volume, maximize task performance, and minimize crew safety risks). Finally, a few habitat layout evaluation examples are described to demonstrate the effectiveness of this method and tool to influence habitat design.
Blindness in designing intelligent systems
NASA Technical Reports Server (NTRS)
Denning, Peter J.
1988-01-01
New investigations of the foundations of artificial intelligence are challenging the hypothesis that problem solving is the cornerstone of intelligence. New distinctions among three domains of concern for humans--description, action, and commitment--have revealed that the design process for programmable machines, such as expert systems, is based on descriptions of actions and induces blindness to nonanalytic action and commitment. Design processes focusing in the domain of description are likely to yield programs like burearcracies: rigid, obtuse, impersonal, and unable to adapt to changing circumstances. Systems that learn from their past actions, and systems that organize information for interpretation by human experts, are more likely to be successful in areas where expert systems have failed.
Krzysztof, Naus; Aleksander, Nowak
2016-01-01
The article presents a study of the accuracy of estimating the position coordinates of BAUV (Biomimetic Autonomous Underwater Vehicle) by the extended Kalman filter (EKF) method. The fusion of movement parameters measurements and position coordinates fixes was applied. The movement parameters measurements are carried out by on-board navigation devices, while the position coordinates fixes are done by the USBL (Ultra Short Base Line) system. The problem of underwater positioning and the conceptual design of the BAUV navigation system constructed at the Naval Academy (Polish Naval Academy—PNA) are presented in the first part of the paper. The second part consists of description of the evaluation results of positioning accuracy, the genesis of the problem of selecting method for underwater positioning, and the mathematical description of the method of estimating the position coordinates using the EKF method by the fusion of measurements with on-board navigation and measurements obtained with the USBL system. The main part contains a description of experimental research. It consists of a simulation program of navigational parameter measurements carried out during the BAUV passage along the test section. Next, the article covers the determination of position coordinates on the basis of simulated parameters, using EKF and DR methods and the USBL system, which are then subjected to a comparative analysis of accuracy. The final part contains systemic conclusions justifying the desirability of applying the proposed fusion method of navigation parameters for the BAUV positioning. PMID:27537884
Krzysztof, Naus; Aleksander, Nowak
2016-08-15
The article presents a study of the accuracy of estimating the position coordinates of BAUV (Biomimetic Autonomous Underwater Vehicle) by the extended Kalman filter (EKF) method. The fusion of movement parameters measurements and position coordinates fixes was applied. The movement parameters measurements are carried out by on-board navigation devices, while the position coordinates fixes are done by the USBL (Ultra Short Base Line) system. The problem of underwater positioning and the conceptual design of the BAUV navigation system constructed at the Naval Academy (Polish Naval Academy-PNA) are presented in the first part of the paper. The second part consists of description of the evaluation results of positioning accuracy, the genesis of the problem of selecting method for underwater positioning, and the mathematical description of the method of estimating the position coordinates using the EKF method by the fusion of measurements with on-board navigation and measurements obtained with the USBL system. The main part contains a description of experimental research. It consists of a simulation program of navigational parameter measurements carried out during the BAUV passage along the test section. Next, the article covers the determination of position coordinates on the basis of simulated parameters, using EKF and DR methods and the USBL system, which are then subjected to a comparative analysis of accuracy. The final part contains systemic conclusions justifying the desirability of applying the proposed fusion method of navigation parameters for the BAUV positioning.
NASA Astrophysics Data System (ADS)
Biermann, D.; Gausemeier, J.; Heim, H.-P.; Hess, S.; Petersen, M.; Ries, A.; Wagner, T.
2014-05-01
In this contribution a framework for the computer-aided planning and optimisation of functional graded components is presented. The framework is divided into three modules - the "Component Description", the "Expert System" for the synthetisation of several process chains and the "Modelling and Process Chain Optimisation". The Component Description module enhances a standard computer-aided design (CAD) model by a voxel-based representation of the graded properties. The Expert System synthesises process steps stored in the knowledge base to generate several alternative process chains. Each process chain is capable of producing components according to the enhanced CAD model and usually consists of a sequence of heating-, cooling-, and forming processes. The dependencies between the component and the applied manufacturing processes as well as between the processes themselves need to be considered. The Expert System utilises an ontology for that purpose. The ontology represents all dependencies in a structured way and connects the information of the knowledge base via relations. The third module performs the evaluation of the generated process chains. To accomplish this, the parameters of each process are optimised with respect to the component specification, whereby the result of the best parameterisation is used as representative value. Finally, the process chain which is capable of manufacturing a functionally graded component in an optimal way regarding to the property distributions of the component description is presented by means of a dedicated specification technique.
Experiments in MPEG-4 content authoring, browsing, and streaming
NASA Astrophysics Data System (ADS)
Puri, Atul; Schmidt, Robert L.; Basso, Andrea; Civanlar, Mehmet R.
2000-12-01
In this paper, within the context of the MPEG-4 standard we report on preliminary experiments in three areas -- authoring of MPEG-4 content, a player/browser for MPEG-4 content, and streaming of MPEG-4 content. MPEG-4 is a new standard for coding of audiovisual objects; the core of MPEG-4 standard is complete while amendments are in various stages of completion. MPEG-4 addresses compression of audio and visual objects, their integration by scene description, and interactivity of users with such objects. MPEG-4 scene description is based on VRML like language for 3D scenes, extended to 2D scenes, and supports integration of 2D and 3D scenes. This scene description language is called BIFS. First, we introduce the basic concepts behind BIFS and then show with an example, textual authoring of different components needed to describe an audiovisual scene in BIFS; the textual BIFS is then saved as compressed binary file/s for storage or transmission. Then, we discuss a high level design of an MPEG-4 player/browser that uses the main components from authoring such as encoded BIFS stream, media files it refers to, and multiplexed object descriptor stream to play an MPEG-4 scene. We also discuss our extensions to such a player/browser. Finally, we present our work in streaming of MPEG-4 -- the payload format, modification to client MPEG-4 player/browser, server-side infrastructure and example content used in our MPEG-4 streaming experiments.
NASA Technical Reports Server (NTRS)
Houck, J. A.
1980-01-01
This paper describes the work being done at the National Aeronautics and Space Administration's Langley Research Center on the development of a mission simulator for use in the Terminal Configured Vehicle Program. A brief description of the goals and objectives of the Terminal Configured Vehicle Program is presented. A more detailed description of the Mission Simulator, in its present configuration, and its components is provided. Finally, a description of the first research study conducted in the Mission Simulator is presented along with a discussion of some preliminary results from this study.
Universal description of III-V/Si epitaxial growth processes
NASA Astrophysics Data System (ADS)
Lucci, I.; Charbonnier, S.; Pedesseau, L.; Vallet, M.; Cerutti, L.; Rodriguez, J.-B.; Tournié, E.; Bernard, R.; Létoublon, A.; Bertru, N.; Le Corre, A.; Rennesson, S.; Semond, F.; Patriarche, G.; Largeau, L.; Turban, P.; Ponchet, A.; Cornet, C.
2018-06-01
Here, we experimentally and theoretically clarify III-V/Si crystal growth processes. Atomically resolved microscopy shows that monodomain three-dimensional islands are observed at the early stages of AlSb, AlN, and GaP epitaxy on Si, independently of misfit. It is also shown that complete III-V/Si wetting cannot be achieved in most III-V/Si systems. Surface/interface contributions to the free-energy variations are found to be prominent over strain relief processes. We finally propose a general and unified description of III-V/Si growth processes, including a description of the formation of antiphase boundaries.
Context retrieval and description benefits for recognition of unfamiliar faces.
Jones, Todd C; Robinson, Kealagh; Steel, Brenna C
2018-04-19
Describing unfamiliar faces during or immediately after their presentation in a study phase can produce better recognition memory performance compared with a view-only control condition. We treated descriptions as elaborative information that is part of the study context and investigated how context retrieval influences recognition memory. Following general dual-process theories, we hypothesized that recollection would be used to recall descriptions and that description recall would influence recognition decisions, including the level of recognition confidence. In four experiments description conditions produced higher hit rates and higher levels of recognition confidence than control conditions. Participants recalled descriptive content on some trials, and this context retrieval was linked to an increase in the recognition confidence level. Repeating study faces in description conditions increased recognition scores, recognition confidence level, and context retrieval. Estimates of recollection from Yonelinas' (1994) dual-process signal detection ROCs were, on average, very close to the measures of context recall. Description conditions also produced higher estimates of familiarity. Finally, we found evidence that participants engaged in description activity in some ostensibly view-only trials. An emphasis on the information participants use in making their recognition decisions can advance understanding on description effects when descriptions are part of the study trial context. (PsycINFO Database Record (c) 2018 APA, all rights reserved).
Hydroxyapatite Fibers: A Review of Synthesis Methods
NASA Astrophysics Data System (ADS)
Qi, Mei-Li; He, Kun; Huang, Zhen-Nan; Shahbazian-Yassar, Reza; Xiao, Gui-Yong; Lu, Yu-Peng; Shokuhfar, Tolou
2017-08-01
Hydroxyapatite (HA) exhibits excellent biocompatibility, bioactivity, osteoconductivity, non-toxicity and so on, making it a perfect candidate for biomedical applications. However, HA is not qualified to be used in load-bearing sites due to its poor flexural strength and fracture toughness. Design, synthesis and application of fibrous HA is a promising strategy to overcome the inherent brittleness. This review provides a brief description of HA and hydroxyapatite fiber (HAF), then introduces different synthesis methods of HAF and highlights the inherent merits and drawbacks involved in each method. Finally, the future perspectives in this active research area are given. The purpose of this review is to acquaint the reader with this promising new field of biomaterials research and with emphasis on recent techniques to obtain continuous, uniform and long HAF.
Williams, Glyn; Ferenczy, György G; Ulander, Johan; Keserű, György M
2017-04-01
Small is beautiful - reducing the size and complexity of chemical starting points for drug design allows better sampling of chemical space, reveals the most energetically important interactions within protein-binding sites and can lead to improvements in the physicochemical properties of the final drug. The impact of fragment-based drug discovery (FBDD) on recent drug discovery projects and our improved knowledge of the structural and thermodynamic details of ligand binding has prompted us to explore the relationships between ligand-binding thermodynamics and FBDD. Information on binding thermodynamics can give insights into the contributions to protein-ligand interactions and could therefore be used to prioritise compounds with a high degree of specificity in forming key interactions. Copyright © 2016 Elsevier Ltd. All rights reserved.
Direct solar heating for Space Station application
NASA Technical Reports Server (NTRS)
Simon, W. E.
1985-01-01
Early investigations have shown that a large percentage of the power generated on the Space Station will be needed in the form of high-temperature thermal energy. The most efficient method of satisfying this requirement is through direct utilization of available solar energy. A system concept for the direct use of solar energy on the Space Station, including its benefits to customers, technologists, and designers of the station, is described. After a brief discussion of energy requirements and some possible applications, results of selective tradeoff studies are discussed, showing area reduction benefits and some possible configurations for the practical use of direct solar heating. Following this is a description of system elements and required technologies. Finally, an assessment of available contributive technologies is presented, and a Space Shuttle Orbiter flight experiment is proposed.
New Approaches to Systematics of Trypanosomatidae: Criteria for Taxonomic (Re)description.
Votýpka, Jan; d'Avila-Levy, Claudia M; Grellier, Philippe; Maslov, Dmitri A; Lukeš, Julius; Yurchenko, Vyacheslav
2015-10-01
While dixenous trypanosomatids represent one of the most dangerous pathogens for humans and domestic animals, their monoxenous relatives have frequently become model organisms for studies of diversity of parasitic protists and host-parasite associations. Yet, the classification of the family Trypanosomatidae is not finalized and often confusing. Here we attempt to make a blueprint for future studies in this field. We would like to elicit a discussion about an updated procedure, as traditional taxonomy was not primarily designed to be used for protists, nor can molecular phylogenetics solve all the problems alone. The current status, specific cases, and examples of generalized solutions are presented under conditions where practicality is openly favored over rigid taxonomic codes or blind phylogenetic approach. Copyright © 2015 Elsevier Ltd. All rights reserved.
Mars Science Laboratory Heatshield Flight Data Analysis
NASA Technical Reports Server (NTRS)
Mahzari, Milad; White, Todd
2017-01-01
NASA Mars Science Laboratory (MSL), which landed the Curiosity rover on the surface of Mars on August 5th, 2012, was the largest and heaviest Mars entry vehicle representing a significant advancement in planetary entry, descent and landing capability. Hypersonic flight performance data was collected using MSLs on-board sensors called Mars Entry, Descent and Landing Instrumentation (MEDLI). This talk will give an overview of MSL entry and a description of MEDLI sensors. Observations from flight data will be examined followed by a discussion of analysis efforts to reconstruct surface heating from heatshields in-depth temperature measurements. Finally, a brief overview of MEDLI2 instrumentation, which will fly on NASAs Mars2020 mission, will be presented with a discussion on how lessons learned from MEDLI data affected the design of MEDLI2 instrumentation.
A proposal of an architecture for the coordination level of intelligent machines
NASA Technical Reports Server (NTRS)
Beard, Randall; Farah, Jeff; Lima, Pedro
1993-01-01
The issue of obtaining a practical, structured, and detailed description of an architecture for the Coordination Level of Center for Intelligent Robotic Systems for Sapce Exploration (CIRSSE) Testbed Intelligent Controller is addressed. Previous theoretical and implementation works were the departure point for the discussion. The document is organized as follows: after this introductory section, section 2 summarizes the overall view of the Intelligent Machine (IM) as a control system, proposing a performance measure on which to base its design. Section 3 addresses with some detail implementation issues. An hierarchic petri-net with feedback-based learning capabilities is proposed. Finally, section 4 is an attempt to address the feedback problem. Feedback is used for two functions: error recovery and reinforcement learning of the correct translations for the petri-net transitions.
Deep Learning for Computer Vision: A Brief Review
Doulamis, Nikolaos; Doulamis, Anastasios; Protopapadakis, Eftychios
2018-01-01
Over the last years deep learning methods have been shown to outperform previous state-of-the-art machine learning techniques in several fields, with computer vision being one of the most prominent cases. This review paper provides a brief overview of some of the most significant deep learning schemes used in computer vision problems, that is, Convolutional Neural Networks, Deep Boltzmann Machines and Deep Belief Networks, and Stacked Denoising Autoencoders. A brief account of their history, structure, advantages, and limitations is given, followed by a description of their applications in various computer vision tasks, such as object detection, face recognition, action and activity recognition, and human pose estimation. Finally, a brief overview is given of future directions in designing deep learning schemes for computer vision problems and the challenges involved therein. PMID:29487619
Schmitt, J F; Meline, T J
1990-12-01
We reviewed the 1983-1988 issues of six journals that frequently publish papers including specifically language-impaired (LI) subjects. A total of 92 research reports provided data for our review. The research reports included experimental studies, ex post facto studies, and intervention studies. These studies represent a broad spectrum of the theoretical and empirical foundations of knowledge regarding LI children. The analysis of the published research centered on subject descriptions and the use of control groups. A descriptive analysis of the data showed few consistent trends among the studies with respect to subject selection, subject description, and the number and types of control groups. We discuss the importance of more complete subject descriptions in studies of LI children as well as the importance of the choice of matching criteria for control groups in between-subjects designs.
Research-Based Model for Adult Consumer-Homemaking Education.
ERIC Educational Resources Information Center
Ball State Univ., Muncie, IN.
This model is designed to be used as a guide by all teachers and designers of adult vocational consumer and homemaking courses who usually function as program planners. Chapter 1 contains an operational definition, the rationale, and description of intended users. Chapter 2 presents the model description with an overview and discussion of the…
Quality of Austrian and Dutch Falls-Prevention Information: A Comparative Descriptive Study
ERIC Educational Resources Information Center
Schoberer, Daniela; Mijnarends, Donja M.; Fliedner, Monica; Halfens, Ruud J. G.; Lohrmann, Christa
2016-01-01
Objectives: The aim of this study was to evaluate and compare the quality of written patient information material available in Austrian and Dutch hospitals and nursing homes pertaining to falls prevention. Design: Comparative descriptive study design Setting: Hospitals and nursing homes in Austria and the Netherlands. Method: Written patient…
DOT National Transportation Integrated Search
2013-10-01
This document provides a step-by-step description of the design and execution of a strategic job analysis, using the position of Freight Conductor as an example. This document was created to be useful for many different needs, and can be used as an e...
Microprocessor Design Using Hardware Description Language
ERIC Educational Resources Information Center
Mita, Rosario; Palumbo, Gaetano
2008-01-01
The following paper has been conceived to deal with the contents of some lectures aimed at enhancing courses on digital electronic, microelectronic or VLSI systems. Those lectures show how to use a hardware description language (HDL), such as the VHDL, to specify, design and verify a custom microprocessor. The general goal of this work is to teach…
Bowen, Judith L; Provost, Lloyd; Stevens, David P; Johnson, Julie K; Woods, Donna M; Sixta, Connie S; Wagner, Edward H
2010-09-01
Recent Breakthrough Series Collaboratives have focused on improving chronic illness care, but few have included academic practices, and none have specifically targeted residency education in parallel with improving clinical care. Tools are available for assessing progress with clinical improvements, but no similar instruments have been developed for monitoring educational improvements for chronic care education. To design a survey to assist teaching practices with identifying curricular gaps in chronic care education and monitor efforts to address those gaps. During a national academic chronic care collaborative, we used an iterative method to develop and pilot test a survey instrument modeled after the Assessing Chronic Illness Care (ACIC). We implemented this instrument, the ACIC-Education, in a second collaborative and assessed the relationship of survey results with reported educational measures. A combined 57 self-selected teams from 37 teaching hospitals enrolled in one of two collaboratives. We used descriptive statistics to report mean ACIC-E scores and educational measurement results, and Pearson's test for correlation between the final ACIC-E score and reported educational measures. A total of 29 teams from the national collaborative and 15 teams from the second collaborative in California completed the final ACIC-E. The instrument measured progress on all sub-scales of the Chronic Care Model. Fourteen California teams (70%) reported using two to six education measures (mean 4.3). The relationship between the final survey results and the number of educational measures reported was weak (R(2) = 0.06, p = 0.376), but improved when a single outlier was removed (R(2) = 0.37, p = 0.022). The ACIC-E instrument proved feasible to complete. Participating teams, on average, recorded modest improvement in all areas measured by the instrument over the duration of the collaboratives. The relationship between the final ACIC-E score and the number of educational measures was weak. Further research on its utility and validity is required.
Meeting IYA Goals for Diverse Science Center and Planetarium Audiences
NASA Astrophysics Data System (ADS)
Nichols Yehling, Michelle; Carney, K.
2008-05-01
The International Year of Astronomy provides the Adler Planetarium in Chicago, IL with a chance to bring astronomy into the greater Chicagoland area. 1) The presenters will outline Adler's program plans to date, from community outreach programs such as Café Scientifique and citizen science light pollution observations, to programs within the institution, like a temporary exhibit about how telescopes have shaped our understanding of the cosmos. The presenters will focus on the range of programming and how this suite of programs brings together IYA topical threads, addressing sustainability and the needs of our audiences. 2) How do we know that the IYA programs we design actually work for our audiences? How do we assess and improve our work? This session will introduce participants to the "backwards design” process through which Adler educators create experiences that begin with focused goals. Facilitators will take participants through the Adler's evaluation planning method that uncovers what we want to know about our educational programs and experiences. Tools for program design and evaluation will be shared. 3) Facilitators will present for discussion three activities that have been designed and evaluated for one of our audiences, the museum-going family. Workshop participants are invited to critique and discuss these activities, their rationale, their fit with identified audience and institutional needs, and IYA thematic strands. Participants will share any ideas they have for adaptation of these activities for other audiences in their own settings. 4) Finally, all of the educational design and evaluation tools, program descriptions, and lesson plans will be compiled into an electronic document. Participants are encouraged to bring program description examples and/or activity lesson plans that can be incorporated into the document to provide an IYA "workbook". This workbook will be sent to all interested session participants by no later than July 31, 2008.
Multiobjective optimization design of an rf gun based electron diffraction beam line
NASA Astrophysics Data System (ADS)
Gulliford, Colwyn; Bartnik, Adam; Bazarov, Ivan; Maxson, Jared
2017-03-01
Multiobjective genetic algorithm optimizations of a single-shot ultrafast electron diffraction beam line comprised of a 100 MV /m 1.6-cell normal conducting rf (NCRF) gun, as well as a nine-cell 2 π /3 bunching cavity placed between two solenoids, have been performed. These include optimization of the normalized transverse emittance as a function of bunch charge, as well as optimization of the transverse coherence length as a function of the rms bunch length of the beam at the sample location for a fixed charge of 1 06 electrons. Analysis of the resulting solutions is discussed in terms of the relevant scaling laws, and a detailed description of one of the resulting solutions from the coherence length optimizations is given. For a charge of 1 06 electrons and final beam sizes of σx≥25 μ m and σt≈5 fs , we found a relative coherence length of Lc ,x/σx≈0.07 using direct optimization of the coherence length. Additionally, based on optimizations of the emittance as a function of final bunch length, we estimate the relative coherence length for bunch lengths of 30 and 100 fs to be roughly 0.1 and 0.2 nm /μ m , respectively. Finally, using the scaling of the optimal emittance with bunch charge, for a charge of 1 05 electrons, we estimate relative coherence lengths of 0.3, 0.5, and 0.92 nm /μ m for final bunch lengths of 5, 30 and 100 fs, respectively.
Data management system DIU test system
NASA Technical Reports Server (NTRS)
1976-01-01
An operational and functional description is given of the data management system. Descriptions are included for the test control unit, analog stimulus panel, discrete stimulus panel, and the precision source. The mechanical configuration is defined and illustrated to provide card and component location for modification or repair. The unit level interfaces are mirror images of the DIU interfaces and are described in the Final Technical Report for NASA-MSFC contract NAS8-29155.
ERIC Educational Resources Information Center
Sinke, Mary
This study examined a nursing aide recognition program in a nursing home with 50 nurses and 200 nurse aides. Before the program was implemented, baseline data on job satisfaction were gathered with a questionnaire. A one-page description of the program and an evaluation tool were distributed to the nurse aides at their information sessions. Nurse…
On decentralized design: Rationale, dynamics, and effects on decision-making
NASA Astrophysics Data System (ADS)
Chanron, Vincent
The focus of this dissertation is the design of complex systems, including engineering systems such as cars, airplanes, and satellites. Companies who design these systems are under constant pressure to design better products that meet customer expectations, and competition forces them to develop them faster. One of the responses of the industry to these conflicting challenges has been the decentralization of the design responsibilities. The current lack of understanding of the dynamics of decentralized design processes is the main motivation for this research, and places value on the descriptive base. It identifies the main reasons and the true benefits for companies to decentralize the design of their products. It also demonstrates the limitations of this approach by listing the relevant issues and problems created by the decentralization of decisions. Based on these observations, a game-theoretic approach to decentralized design is proposed to model the decisions made during the design process. The dynamics are modeled using mathematical formulations inspired from control theory. Building upon this formalism, the issue of convergence in decentralized design is analyzed: the equilibrium points of the design space are identified and convergent and divergent patterns are recognized. This rigorous investigation of the design process provides motivation and support for proposing new approaches to decentralized design problems. Two methods are developed, which aim at improving the design process in two ways: decreasing the product development time, and increasing the optimality of the final design. The frame of these methods are inspired by eigenstructure decomposition and set-based design, respectively. The value of the research detailed within this dissertation is in the proposed methods which are built upon the sound mathematical formalism developed. The contribution of this work is two fold: rigorous investigation of the design process, and practical support to decision-making in decentralized environments.
DOE Office of Scientific and Technical Information (OSTI.GOV)
Andersson, Johan; Winberg, Anders; Skagius, Kristina
The Swedish Nuclear Fuel and Waste Management Co., SKB, is currently finalizing its surface based site investigations for the final repository for spent nuclear fuel in the municipalities of Oestharmnar (the Forsmark area) and Oskarshamn (the Simpevar/Laxemar area). The investigation data are assessed into a Site Descriptive Model, constituting a synthesis of geology, rock mechanics, thermal properties, hydrogeology, hydro-geochemistry, transport properties and a surface system description. Site data constitute a wide range of different measurement results. These data both need to be checked for consistency and to be interpreted into a format more amenable for three-dimensional modeling. The three-dimensional modelingmore » (i.e. estimating the distribution of parameter values in space) is made in a sequence where the geometrical framework is taken from the geological models and in turn used by the rock mechanics, thermal and hydrogeological modeling. These disciplines in turn are partly interrelated, and also provide feedback to the geological modeling, especially if the geological description appears unreasonable when assessed together with the other data. Procedures for assessing the uncertainties and the confidence in the modeling have been developed during the course of the site modeling. These assessments also provide key input to the completion of the site investigation program. (authors)« less
Qualitative Descriptive Methods in Health Science Research.
Colorafi, Karen Jiggins; Evans, Bronwynne
2016-07-01
The purpose of this methodology paper is to describe an approach to qualitative design known as qualitative descriptive that is well suited to junior health sciences researchers because it can be used with a variety of theoretical approaches, sampling techniques, and data collection strategies. It is often difficult for junior qualitative researchers to pull together the tools and resources they need to embark on a high-quality qualitative research study and to manage the volumes of data they collect during qualitative studies. This paper seeks to pull together much needed resources and provide an overview of methods. A step-by-step guide to planning a qualitative descriptive study and analyzing the data is provided, utilizing exemplars from the authors' research. This paper presents steps to conducting a qualitative descriptive study under the following headings: describing the qualitative descriptive approach, designing a qualitative descriptive study, steps to data analysis, and ensuring rigor of findings. The qualitative descriptive approach results in a summary in everyday, factual language that facilitates understanding of a selected phenomenon across disciplines of health science researchers. © The Author(s) 2016.
2004-09-01
Required> </Equipment> <Equipment code="L44680"> <Description>LAUNCHER GRENADE SMOKE: SCREENING RP M250 </Description> <Required...EquipmentPiecesOnHand> </UnitEquipment> <UnitEquipment> <EquipmentDescription>LAUNCHER GRENADE SMOKE: SCREENING RP M250 </EquipmentDescription
Ander, Douglas S; Wallenstein, Joshua; Abramson, Jerome L; Click, Lorie; Shayne, Philip
2012-10-01
Emergency Medicine (EM) clerkships traditionally assess students using numerical ratings of clinical performance. The descriptive ratings of the Reporter, Interpreter, Manager, and Educator (RIME) method have been shown to be valuable in other specialties. We hypothesized that the RIME descriptive ratings would correlate with clinical performance and examination scores in an EM clerkship, indicating that the RIME ratings are a valid measure of performance. This was a prospective cohort study of an evaluation instrument for 4(th)-year medical students completing an EM rotation. This study received exempt Institutional Review Board status. EM faculty and residents completed shift evaluation forms including both numerical and RIME ratings. Students completed a final examination. Mean scores for RIME and clinical evaluations were calculated. Linear regression models were used to determine whether RIME ratings predicted clinical evaluation scores or final examination scores. Four hundred thirty-nine students who completed the EM clerkship were enrolled in the study. After excluding items with missing data, there were 2086 evaluation forms (based on 289 students) available for analysis. There was a clear positive relationship between RIME category and clinical evaluation score (r(2)=0.40, p<0.01). RIME ratings correlated most strongly with patient management skills and least strongly with humanistic qualities. A very weak correlation was seen with RIME and final examination. We found a positive association between RIME and clinical evaluation scores, suggesting that RIME is a valid clinical evaluation instrument. RIME descriptive ratings can be incorporated into EM evaluation instruments and provides useful data related to patient management skills. Copyright © 2012 Elsevier Inc. All rights reserved.
The CADSS design automation system. [computerized design language for small digital systems
NASA Technical Reports Server (NTRS)
Franke, E. A.
1973-01-01
This research was designed to implement and extend a previously defined design automation system for the design of small digital structures. A description is included of the higher level language developed to describe systems as a sequence of register transfer operations. The system simulator which is used to determine if the original description is correct is also discussed. The design automation system produces tables describing the state transistions of the system and the operation of all registers. In addition all Boolean equations specifying system operation are minimized and converted to NAND gate structures. Suggestions for further extensions to the system are also given.
Busetto, Loraine; Luijkx, Katrien; Calciolari, Stefano; González-Ortiz, Laura G; Vrijhoef, Hubertus J M
2017-03-08
In this paper, we provide a detailed and explicit description of the processes and decisions underlying and shaping the emergent multimethod research design of our study on workforce changes in integrated chronic care. The study was originally planned as mixed method research consisting of a preliminary literature review and quantitative check of these findings via a Delphi panel. However, when the findings of the literature review were not appropriate for quantitative confirmation, we chose to continue our qualitative exploration of the topic via qualitative questionnaires and secondary analysis of two best practice case reports. The resulting research design is schematically described as an emergent and interactive multimethod design with multiphase combination timing. In doing so, we provide other researchers with a set of theory- and experience-based options to develop their own multimethod research and provide an example for more detailed and structured reporting of emergent designs. We argue that the terminology developed for the description of mixed methods designs should also be used for multimethod designs such as the one presented here.
42 CFR 84.70 - Self-contained breathing apparatus; description.
Code of Federal Regulations, 2010 CFR
2010-10-01
... 42 Public Health 1 2010-10-01 2010-10-01 false Self-contained breathing apparatus; description. 84...-Contained Breathing Apparatus § 84.70 Self-contained breathing apparatus; description. (a) Self-contained breathing apparatus, including all completely assembled, portable, self-contained devices designed for use...
42 CFR 84.70 - Self-contained breathing apparatus; description.
Code of Federal Regulations, 2011 CFR
2011-10-01
... 42 Public Health 1 2011-10-01 2011-10-01 false Self-contained breathing apparatus; description. 84...-Contained Breathing Apparatus § 84.70 Self-contained breathing apparatus; description. (a) Self-contained breathing apparatus, including all completely assembled, portable, self-contained devices designed for use...
NASA Technical Reports Server (NTRS)
VanArsdall, John C.
2005-01-01
The Hubble Space Telescope (HST) normally requires three gyroscopes for three-axis rate control. The loss of the Space Shuttle Columbia on STS-107 resulted in the cancellation of a shuttle-based HST Servicing Mission 4. Therefore, HST must operate using the on-board hardware until an alternate means of servicing can be accomplished. The probability of gyro failure indicates that fewer than three gyros will be operable before any servicing mission can be performe& To mitigate this, and to extend the HST life expectancy, a rate estimation and control algorithm was developed that requires two gyros to measure rate about two axes, with the remaining axis rate estimated using one of three alternate sensors. Three-axis magnetometers (MSS) are used for coarse rate estimation during large maneuvers and during occultations of other sensors. Fixed-Head Star Trackers (FHSTs) are used for rate estimation during safe mode recovery and during transition to science operations. Fine rate estimation during science operations is performed using the Fine Guidance Sensors (FGSs). The FHST mode (T2G) relies on star vectors as measured by the FHSTs to estimate vehicle rate about the axis not measured by the gyros. Since the FHSTs were not designed to estimate body rate, this method involves a unique set of problems that had to be overcome in the final design, such as the effect of FHST break tracks and moving targets on rate estimation. The solutions to these problems, as well as a detailed description of the design and implementation of the rate estimation are presented Also included are the time domain and frequency domain analysis of the T2G control law. A high fidelity HST simulator (HSTSIM) was used to verify T2G performance prior to on-orbit use. Results of these simulations are also presented. Finally, analysis of actual T2G on-orbit test results is presented for design validation.
Federal Register 2010, 2011, 2012, 2013, 2014
2012-10-11
... export of a U.S.-manufactured satellite and associated services to China (Hong Kong). Brief non-proprietary description of the anticipated use of the items being exported: The U.S. exports will be used to... EXPORT-IMPORT BANK OF THE UNITED STATES [Public Notice 2012-0528] Application for Final Commitment...
Associate Degree Nursing Program Guide. Final Report from February 19, 1985 to August 31, 1985.
ERIC Educational Resources Information Center
Seminole Community Coll., Sanford, FL.
This program guide is intended to help Associate Degree Nursing (ADN) instructors in Florida develop and/or update ADN programs. The first part is the final report of the project that developed the guide. Section I of the guide provides a description of the occupation, student admission criteria, retention and withdrawal standards, and program…
Federal Register 2010, 2011, 2012, 2013, 2014
2012-08-28
... at a later date, for short- and medium-haul passenger air service in East Asia, South Asia, and/or... Trading Limited. Guarantor(s): N/A. Description of Items Being Exported Boeing 737 aircraft. Information on Decision: Information on the final decision for this transaction will be available in the...
ERIC Educational Resources Information Center
Hull, Daniel M.; Lovett, James E.
This volume of the final report for the Robotics/Automated Systems Technician (RAST) curriculum project is a curriculum planning guide intended for school administrators, faculty, and student counselors/advisors. It includes step-by-step procedures to help institutions evaluate their community's needs and their capabilities to meet these needs in…
Studies in Bilingual Evaluation, Work Unit I: Bilingual Prediction Project. Final Report.
ERIC Educational Resources Information Center
de Porcel, Antonio; And Others
The final report of the Bilingual Prediction Project presents a review of the project from its inception in 1975 through completion in 1979. The main goal was to predict a student's academic ability in English. A prediction index was constructed in two stages. The first stage was a description of the target population and their school setting, as…
1983-04-01
Management Information System (OHMIS). The system design includes: detailed function data flows for each of the core data processing functions of OHMIS, in the form of input/processing/output algorithms; detailed descriptions of the inputs and outputs; performance specifications of OHMIS; resources required to develop and operate OHMIS (Vol II). In addition, the report provides a summary of the rationale used to develop the recommended system design, a description of the methodology used to develop the recommended system design, and a review of existing
NASA Technical Reports Server (NTRS)
Dicarlo, Daniel J.; Brown, Philip W.; Hallissy, James B.
1992-01-01
Flight tests of an F-106B aircraft equipped with a leading-edge vortex flap, which represented the culmination of a research effort to examine the effectiveness of the flap, were conducted at the NASA Langley Research Center. The purpose of the flight tests was to establish a data base on the use of a wing leading-edge vortex flap as a means to validate the design and analysis methods associated with the development of such a vortical flow-control concept. The overall experiment included: refinements of the design codes for vortex flaps; numerous wind tunnel entries to aid in verifying design codes and determining basic aerodynamic characteristics; design and fabrication of the flaps, structural modifications to the wing tip and leading edges of the test aircraft; development and installation of an aircraft research instrumentation system, including wing and flap surface pressure measurements and selected structural loads measurements; ground-based simulation to assess flying qualities; and finally, flight testing. This paper reviews the operational aspects associated with the flight experiment, which includes a description of modifications to the research airplane, the overall flight test procedures, and problems encountered. Selected research results are also presented to illustrate the accomplishments of the research effort.
Overview and evolution of the LeRC PMAD DC test bed
NASA Technical Reports Server (NTRS)
Soeder, James F.; Frye, Robert J.
1992-01-01
Since the beginning of the Space Station Freedom Program (SSFP), the Lewis Research Center (LeRC) has been developed electrical power system test beds to support the overall design effort. Through this time, the SSFP has changed the design baseline numerous times, however, the test bed effort has endeavored to track these changes. Beginning in August 1989 with the baseline and an all DC system, a test bed was developed to support the design baseline. The LeRC power measurement and distribution (PMAD) DC test bed and the changes in the restructure are described. The changes included the size reduction of primary power channel and various power processing elements. A substantial reduction was also made in the amount of flight software with the subsequent migration of these functions to ground control centers. The impact of these changes on the design of the power hardware, the controller algorithms, the control software, and a description of their current status is presented. An overview of the testing using the test bed is described, which includes investigation of stability and source impedance, primary and secondary fault protection, and performance of a rotary utility transfer device. Finally, information is presented on the evolution of the test bed to support the verification and operational phases of the SSFP in light of these restructure scrubs.
Overview and evolution of the LeRC PMAD DC Testbed
NASA Technical Reports Server (NTRS)
Soeder, James F.; Frye, Robert J.
1992-01-01
Since the beginning of the Space Station Freedom Program (SSFP), the Lewis Research Center (LeRC) has been developed electrical power system test beds to support the overall design effort. Through this time, the SSFP has changed the design baseline numerous times, however, the test bed effort has endeavored to track these changes. Beginning in August 1989 with the baseline and an all DC system, a test bed was developed to support the design baseline. The LeRC power measurement and distribution (PMAD) DC test bed and the changes in the restructure are described. The changes includeed the size reduction of primary power channel and various power processing elements. A substantial reduction was also made in the amount of flight software with the subsequent migration of these functions to ground control centers. The impact of these changes on the design of the power hardware, the controller algorithms, the control software, and a description of their current status is presented. An overview of the testing using the test bed is described, which includes investigation of stability and source impedance, primary and secondary fault protection, and performance of a rotary utility transfer device. Finally, information is presented on the evolution of the test bed to support the verification and operational phases of the SSFP in light of these restructure scrubs.
High-level PC-based laser system modeling
NASA Astrophysics Data System (ADS)
Taylor, Michael S.
1991-05-01
Since the inception of the Strategic Defense Initiative (SDI) there have been a multitude of comparison studies done in an attempt to evaluate the effectiveness and relative sizes of complementary, and sometimes competitive, laser weapon systems. It became more and more apparent that what the systems analyst needed was not only a fast, but a cost effective way to perform high-level trade studies. In the present investigation, a general procedure is presented for the development of PC-based algorithmic systems models for laser systems. This procedure points out all of the major issues that should be addressed in the design and development of such a model. Issues addressed include defining the problem to be modeled, defining a strategy for development, and finally, effective use of the model once developed. Being a general procedure, it will allow a systems analyst to develop a model to meet specific needs. To illustrate this method of model development, a description of the Strategic Defense Simulation - Design To (SDS-DT) model developed and used by Science Applications International Corporation (SAIC) is presented. SDS-DT is a menu-driven, fast executing, PC-based program that can be used to either calculate performance, weight, volume, and cost values for a particular design or, alternatively, to run parametrics on particular system parameters to perhaps optimize a design.
The ISS Fluids and Combustion Facility: Experiment Accommodations Summary
NASA Technical Reports Server (NTRS)
Corban, Robert R.; Simons, Stephen N. (Technical Monitor)
2001-01-01
The International Space Station's (ISS's) Fluids and Combustion Facility (FCF) is in the process of final design and development activities to accommodate a wide range of experiments in the fields of combustion science and fluid physics. The FCF is being designed to provide potential experiments with well defined interfaces that can meet the experimenters requirements, provide the flexibility for on-orbit reconfiguration, and provide the maximum capability within the ISS resources and constraints. As a multi-disciplined facility, the FCF supports various experiments and scientific objectives, which will be developed in the future and are not completely defined at this time. Since developing experiments to be performed within FCF is a continuous process throughout the FCF's operational lifetime, each individual experiment must determine the best configuration of utilizing facility capabilities and resources with augmentation of specific experiment hardware. Configurations of potential experiments in the FCF has been on-going to better define the FCF interfaces and provide assurances that the FCF design will meet its design requirements. This paper provides a summary of ISS resources and FCF capabilities, which are available for potential ISS FCF users. Also, to better understand the utilization of the FCF a description of a various experiment layouts and associated operations in the FCF are provided.
Design and experiment of vehicular charger AC/DC system based on predictive control algorithm
NASA Astrophysics Data System (ADS)
He, Guangbi; Quan, Shuhai; Lu, Yuzhang
2018-06-01
For the car charging stage rectifier uncontrollable system, this paper proposes a predictive control algorithm of DC/DC converter based on the prediction model, established by the state space average method and its prediction model, obtained by the optimal mathematical description of mathematical calculation, to analysis prediction algorithm by Simulink simulation. The design of the structure of the car charging, at the request of the rated output power and output voltage adjustable control circuit, the first stage is the three-phase uncontrolled rectifier DC voltage Ud through the filter capacitor, after by using double-phase interleaved buck-boost circuit with wide range output voltage required value, analyzing its working principle and the the parameters for the design and selection of components. The analysis of current ripple shows that the double staggered parallel connection has the advantages of reducing the output current ripple and reducing the loss. The simulation experiment of the whole charging circuit is carried out by software, and the result is in line with the design requirements of the system. Finally combining the soft with hardware circuit to achieve charging of the system according to the requirements, experimental platform proved the feasibility and effectiveness of the proposed predictive control algorithm based on the car charging of the system, which is consistent with the simulation results.
Implementation of an Adaptive Controller System from Concept to Flight Test
NASA Technical Reports Server (NTRS)
Larson, Richard R.; Burken, John J.; Butler, Bradley S.; Yokum, Steve
2009-01-01
The National Aeronautics and Space Administration Dryden Flight Research Center (Edwards, California) is conducting ongoing flight research using adaptive controller algorithms. A highly modified McDonnell-Douglas NF-15B airplane called the F-15 Intelligent Flight Control System (IFCS) is used to test and develop these algorithms. Modifications to this airplane include adding canards and changing the flight control systems to interface a single-string research controller processor for neural network algorithms. Research goals include demonstration of revolutionary control approaches that can efficiently optimize aircraft performance in both normal and failure conditions and advancement of neural-network-based flight control technology for new aerospace system designs. This report presents an overview of the processes utilized to develop adaptive controller algorithms during a flight-test program, including a description of initial adaptive controller concepts and a discussion of modeling formulation and performance testing. Design finalization led to integration with the system interfaces, verification of the software, validation of the hardware to the requirements, design of failure detection, development of safety limiters to minimize the effect of erroneous neural network commands, and creation of flight test control room displays to maximize human situational awareness; these are also discussed.
UWGSP6: a diagnostic radiology workstation of the future
NASA Astrophysics Data System (ADS)
Milton, Stuart W.; Han, Sang; Choi, Hyung-Sik; Kim, Yongmin
1993-06-01
The Univ. of Washington's Image Computing Systems Lab. (ICSL) has been involved in research into the development of a series of PACS workstations since the middle 1980's. The most recent research, a joint UW-IBM project, attempted to create a diagnostic radiology workstation using an IBM RISC System 6000 (RS6000) computer workstation and the X-Window system. While the results are encouraging, there are inherent limitations in the workstation hardware which prevent it from providing an acceptable level of functionality for diagnostic radiology. Realizing the RS6000 workstation's limitations, a parallel effort was initiated to design a workstation, UWGSP6 (Univ. of Washington Graphics System Processor #6), that provides the required functionality. This paper documents the design of UWGSP6, which not only addresses the requirements for a diagnostic radiology workstation in terms of display resolution, response time, etc., but also includes the processing performance necessary to support key functions needed in the implementation of algorithms for computer-aided diagnosis. The paper includes a description of the workstation architecture, and specifically its image processing subsystem. Verification of the design through hardware simulation is then discussed, and finally, performance of selected algorithms based on detailed simulation is provided.