Sample records for kenkyu rabo system

  1. Seitetsu kenkyu, number 311, September 1983

    SciTech Connect

    Not Available

    1983-09-01

    This special issue on steel for Intermediate-and High-Temperature Service contains research reports on Trends in High Temperature System and Their Material Requirement; Deterioration of Mechanical Properties of Low Alloy Steels during Service at Elevated Temperature; Heavy Stainless Steel Plate for Fast Breeder Reactors; Application of Stainless Steels to High-Temperature Service; Development of High Steel Plates for Intermediate and Room Temperature Pressure Vessel Service; Electric Resistance Welding Rifled Boiler Tube; Development of High Strength Ferritic Stainless Steel Boiler Tube; System for Processing Creep Data, as well as the following general reports: System for Predicting Sintering Operation; Continuous Casting of Pseudo-Rimmed Steel Using In-Mold Electromagnetic Stirrer; Computer Simulation for Continuous Caster Engineering Analysis and Simulation and PERT Models for Man-Machine Operation Study.

  2. The Role of Community Studies in the Makiguchian Pedagogy

    ERIC Educational Resources Information Center

    Gebert, Andrew

    2009-01-01

    This article focuses on two of the earlier works in the Makiguchi corpus, "Kyoju no togo chushin toshiteno kyodoka kenkyu" ("Research into Community Studies as the Integrating Focus of Instruction," 1912/1987; hereafter "Community Studies"), and "Chiri kyoju no hoho oyobi naiyo no kenkyu" ("Research into the Methods and Content of Geography…

  3. System

    NASA Astrophysics Data System (ADS)

    Diao, Jiang; Fan, Guozheng; Liu, Xuan; Xie, Bing

    2014-10-01

    Molecular dynamics simulations were carried out to investigate the anionic structures of the molten CaO-SiO2-P2O5 system. The results show that the average first nearest-neighbor distances for Si-O and P-O pairs are 1.61 and 1.53 Å, respectively. As expected, above 98 pct P and 95 pct Si show fourfold coordination and form tetrahedral structures. Due to the high basicity, nonbridging oxygen occupies a predominant position in Si and P tetrahedron. Based on the oxygen number of different types, the structures of both Si and P tetrahedron were classified as Q 0, Q 1, Q 2, Q 3, and Q 4, where the superscript referred to the number of bridging oxygen atoms. With the substitution of P2O5 for SiO2, Q 0 decreased and other type of Q i units increased. For Si tetrahedron, Q 2 and Q 3 show most notable change, for P tetrahedron, Q 1and Q 2 show the most notable change. The change of Q i units for Si tetrahedron is larger than that for P tetrahedron. The concentration of free oxygen decreases remarkably with the increase of P2O5 content. The Si-O-P linkage is energetically more favorable than Si-O-Si and P-O-P linkages. P ion has a tendency to promote the polymerization of phosphosilicate melts.

  4. Daigaku Nyugakusha Senbatsu Hoho ni kansuru Kenkyu' (Research on Examination for Entrance into Universities).

    ERIC Educational Resources Information Center

    Bulletin, 1969

    1969-01-01

    This document is an English-language abstract (approximately 1,500 words) of a series of research papers on the selection of college and university students. One paper compared the scores gained by three different types of entrants to six universities attracting applicants of high quality. It was found that a candidate has almost no chance of…

  5. System requirements. [Space systems

    SciTech Connect

    Austin, R.E.

    1982-06-01

    Requirements of future space systems, including large space systems, that operate beyond the space shuttle are discussed. Typical functions required of propulsion systems in this operational regime include payload placement, retrieval, observation, servicing, space debris control and support to large space systems. These functional requirements are discussed in conjunction with two classes of propulsion systems: (1) primary or orbit transfer vehicle (OTV) and (2) secondary or systems that generally operate within or relatively near an operational base orbit. Three propulsion system types are described in relation to these requirements: cryogenic OTV, teleoperator maneuvering system and a solar electric OTV.

  6. Body Systems

    NSDL National Science Digital Library

    2011-11-02

    What are the parts and functions of the different systems in the body? Circulatory System Watch the Circulatory System and the Heart video. Complete one of the Circulatory System quizzes. Excretory System Label the parts of the excretory system. Respiratory System Quiz Complete respiratory system quiz to review parts. Skeletal System Label each part of the skeletal system. Vocabulary Review Change the settings to only include body system terms and play Hangman to review new vocabulary. ...

  7. Library System Library System

    E-print Network

    Cinabro, David

    Library System #12;Library System 5150 Anthony Wayne Drive David Adamany Undergraduate Library that for the current fiscal year, we've been given an additional $600,000 for our library materials budget. We're very subscriptions. The Wayne State University Libraries are deeply committed to providing our faculty and students

  8. Immune System

    MedlinePLUS

    ... could put us out of commission. What the Immune System Does The immune (pronounced: ih- myoon ) system, which ... Continue Things That Can Go Wrong With the Immune System Disorders of the immune system can be broken ...

  9. Endocrine System

    MedlinePLUS

    ... is called the endocrine system . What Is the Endocrine System? Although we rarely think about the endocrine system, ... stores of energy. Back Continue What Does the Endocrine System Do? Once a hormone is secreted, it travels ...

  10. Distributed Systems Multiagent Systems

    E-print Network

    Polani, Daniel

    ; no \\big brother" #15; distributedness 5 #12; Why RoboCup? \\Conventional" Scienti#12;c Approach: #15 { solution of problems in a team { against adversarial conditions { planning, learning and adaptation #15; no \\Big Brother"! #15; prototype for multiagent systems 11 #12; Scenario server agent team 2 agent team 1

  11. Operating Systems.

    ERIC Educational Resources Information Center

    Denning, Peter J.; Brown, Robert L.

    1984-01-01

    A computer operating system spans multiple layers of complexity, from commands entered at a keyboard to the details of electronic switching. In addition, the system is organized as a hierarchy of abstractions. Various parts of such a system and system dynamics (using the Unix operating system as an example) are described. (JN)

  12. Aerospace Systems

    NSDL National Science Digital Library

    This pdf contains a syllabus for a course on aerospace systems as part of the Aerospace Technology Program. This course covers an introduction to expendable and reusable Space Launch Vehicle (SLV) systems including hydraulic, pneumatic, electrical, propulsion, mechanical, HVAC (heating, ventilation and air conditioning), and ECLSS (Environmental Control and Life Support Systems). How systems interact with computer and data acquisition systems is also covered.

  13. Immune System

    MedlinePLUS

    ... JavaScript on. Read more information on enabling JavaScript. Immune System Top Banner Content Area Skip Content Marketing Share ... and growth to maintain optimal health. Understanding the Immune System Overview of the Immune System Features of an ...

  14. Systems Thinking (and Systems Doing).

    ERIC Educational Resources Information Center

    Brethower, Dale M.; Dams, Peter-Cornelius

    1999-01-01

    Introduces human performance technology (HPT) by answering the following questions related to: what systems does; practical issues and questions to which systems thinking is relevant; research questions and answers with respect to systems thinking; how HPT practitioners can do systems thinking; systems thinking tools; what is and is not known…

  15. Microfluidic Systems Integrated Microfluidic Systems**

    E-print Network

    Ismagilov, Rustem F.

    Microfluidic Systems Integrated Microfluidic Systems** Rustem F. Ismagilov* Keywords: analytical methods · enzymes · microfluidics · microreactors · protein structures Microfluidic systems use networks of channels thinner than a human hair to manipulate nanoliter volumes of re- agents. The goal of microfluidics

  16. La temporada '97 en el teatro uruguayo

    E-print Network

    Pignataro Calero, Jorge

    1998-04-01

    discusión entre populismo y elitismo, otro síntoma más de la confusión reinante. Un rabo por desollar, todavía, agregó un fuerte ingrediente a la polémica: la incorporación del recurso administrativo y promocional del llamado "socio espectacular," que se...

  17. Fluid Management System (FMS) fluid systems overview

    NASA Technical Reports Server (NTRS)

    Baird, R. S.

    1990-01-01

    Viewgraphs on fluid management system (FMS) fluid systems overview are presented. Topics addressed include: fluid management system description including system requirements (integrated nitrogen system, integrated water system, and integrated waste gas system) and physical description; and fluid management system evolution.

  18. Systems thinking

    Microsoft Academic Search

    Derek Cabrera; Laura Colosi; Claire Lobdell

    2008-01-01

    Evaluation is one of many fields where “systems thinking” is popular and is said to hold great promise. However, there is disagreement about what constitutes systems thinking. Its meaning is ambiguous, and systems scholars have made diverse and divergent attempts to describe it. Alternative origins include: von Bertalanffy, Aristotle, Lao Tsu or multiple aperiodic “waves.” Some scholars describe it as

  19. Solar System

    NSDL National Science Digital Library

    Ms. Wright

    2009-10-09

    An introduction to to the solar system. How to distinguish between the different planets. Activities to play while getting to know the solar system. Cosmic Cookies Solar System Scavenger Hunt Edible Earth Strawkets and Control Strawkets and Thrust Strawkets and Weight ...

  20. Linked Systems.

    ERIC Educational Resources Information Center

    Association of Research Libraries, Washington, DC.

    Three papers are compiled here for research library directors: (1) "Background: Open Systems Interconnection," in which David F. Bishop provides fundamental background information to explain the concept of the emerging technology of linked systems and open systems interconnection--i.e., an agreed upon standard set of conventions or rules that,…

  1. Energy Systems

    NSDL National Science Digital Library

    Office of Educational Partnerships,

    Posters are provided for several different energy conversion systems. Students are provided with cards that give the name and a description of each of the components in an energy system. They match these with the figures on the diagram. Since the groups look at different systems, they also describe their results to the class to share their knowledge.

  2. Systems Thinking 2: Thermodynamic Systems

    NSDL National Science Digital Library

    Linda Vanasupa

    This video explains thermodynamic systems, open and closed systems, and the four key properties of a system. This video is part of the Sustainability Learning Suites, made possible in part by a grant from the National Science Foundation. See 'Learn more about this resource' for Learning Objectives, Assessment, and Activities.

  3. Antenna Systems Advanced Antenna Systems

    E-print Network

    Fang, Yuguang "Michael"

    EEL4461 EEL5462 Fall 2014 Antenna Systems Advanced Antenna Systems Instructor Dr. Jenshan Lin://lss.at.ufl.edu/) Textbooks Required: Balanis, Antenna Theory - Analysis and Design, 3rd ed. 2005 Prerequisite EEL3472 principles of antenna and to apply them to the design and analysis of antenna systems. Students will learn

  4. Operating Systems

    NSDL National Science Digital Library

    Bin Muhammad, Rashid

    Rashid Bin Muhammad at Kent State University presents his page of lectures notes and other instructional materials on operating systems. The site is divided into a number of topics about operating systems: history, structure, process, threads, Solaris-2, CPU / process scheduling, schedule algorithm, interprocess communication, deadlock, important UNIX commands, and references. The site is then followed by links to outside resources to help supplement the material presented here. This is a great resource for computer science instructors teaching students about operating systems.

  5. [Information systems].

    PubMed

    Rodríguez Maniega, José Antonio; Trío Maseda, Reyes

    2005-03-01

    The arrival of victims of the terrorist attacks of 11 March at the hospital put the efficiency of its information systems to the test. To be most efficient, these systems should be simple and directed, above all, to the follow-up of victims and to providing the necessary information to patients and families. A specific and easy to use system is advisable. PMID:15771852

  6. Geothermal systems

    NASA Technical Reports Server (NTRS)

    Mohl, C.

    1978-01-01

    Several tasks of JPL related to geothermal energy are discussed. The major task is the procurement and test and evaluation of a helical screw drive (wellhead unit). A general review of geothermal energy systems is given. The presentation focuses attention on geothermal reservoirs in California, with graphs and charts to support the discussion. Included are discussions on cost analysis, systems maintenance, and a comparison of geothermal and conventional heating and cooling systems.

  7. Systemic Darwinism

    PubMed Central

    Winther, Rasmus Grønfeldt

    2008-01-01

    Darwin's 19th century evolutionary theory of descent with modification through natural selection opened up a multidimensional and integrative conceptual space for biology. We explore three dimensions of this space: explanatory pattern, levels of selection, and degree of difference among units of the same type. Each dimension is defined by a respective pair of poles: law and narrative explanation, organismic and hierarchical selection, and variational and essentialist thinking. As a consequence of conceptual debates in the 20th century biological sciences, the poles of each pair came to be seen as mutually exclusive opposites. A significant amount of 21st century research focuses on systems (e.g., genomic, cellular, organismic, and ecological/global). Systemic Darwinism is emerging in this context. It follows a “compositional paradigm” according to which complex systems and their hierarchical networks of parts are the focus of biological investigation. Through the investigation of systems, Systemic Darwinism promises to reintegrate each dimension of Darwin's original logical space. Moreover, this ideally and potentially unified theory of biological ontology coordinates and integrates a plurality of mathematical biological theories (e.g., self-organization/structure, cladistics/history, and evolutionary genetics/function). Integrative Systemic Darwinism requires communal articulation from a plurality of perspectives. Although it is more general than these, it draws on previous advances in Systems Theory, Systems Biology, and Hierarchy Theory. Systemic Darwinism would greatly further bioengineering research and would provide a significantly deeper and more critical understanding of biological reality. PMID:18697926

  8. Anticipatory systems as linguistic systems

    NASA Astrophysics Data System (ADS)

    Ekdahl, Bertil

    2000-05-01

    The idea of system is well established although not well defined. What makes up a system depends on the observer. Thinking in terms of systems is only a convenient way to conceptualize organizations, natural or artificial, that show coherent properties. Among all properties, which can be ascribed to systems, one property seems to be more outstanding than others, namely that of being anticipatory. In nature, anticipatory properties are found only in living organizations. In this way it can be said to separate non-living systems from living because there is no indication that any natural phenomenon occurring in systems where there is no indication of life is anticipatory. The characteristic of living systems is that they are exposed to the evolution contrary to causal systems that do not undergo changes due to the influence of the environment. Causal systems are related to the past in such a way that subsequent situations can be calculated from knowledge of past situations. In causal systems the past is the cause of the present and there is no reference to the future as a determining agent, contrary to anticipatory systems where expectations are the cause of the present action. Since anticipatory properties are characteristic of living systems, this property, as all other properties in living systems, is a result of the evolution and can be found in plants as well as in animals. Thus, it is not only tied to consciousness but is found at a more basic level, i.e., in the interplay between genotype and phenotype. Anticipation is part of the genetic language in such a way that appropriate actions, for events in the anticipatory systems environment, are inscribed in the genes. Anticipatory behavior, as a result of the interpretation of the genetic language, has been selected by the evolution. In this paper anticipatory systems are regarded as linguistic systems and I argue that as such anticipation cannot be fragmented but must be holistically studied. This has the implication that anticipatory behavior can only partially be described in a computer language and, furthermore, it shows that only a restricted class of anticipatory systems can be transferred to computers.

  9. Disperse Systems

    Microsoft Academic Search

    Makoto Takeo

    1999-01-01

    Interesting applications for disperse systems exist in many areas of modern technology. Weight and cost savings achieved in engineered foams for complex designs and computer-modeled optical pigments for creating astounding effects in coating are but two examples of such diverse applications. In addition to the cost and material reductions already achieved in existing applications, future applications of disperse systems are

  10. Blackboard systems

    Microsoft Academic Search

    I. D. Craig

    1988-01-01

    The blackboard architecture is becoming an increasingly popular basis for the construction of problem-solving systems which operate in domains requiring qualitatively different kinds of knowledge to be applied in order to arrive at a solution to a problem. This paper presents the metaphor on which blackboard systems are based. The metaphor is then given an interpretation which constitutes the blackboard

  11. Multimedia Systems

    NSDL National Science Digital Library

    Ms Laurie Patterson

    CSC 304. Multimedia Systems (3) Prerequisite: CSC 121. Introduction to technologies of the Internet and networked multimedia systems. Issues in web page design; Internet client/server programming; collaborative computing and group work; network publishing; security and encryption; audio and video compression; ethical issues and privacy; e-commerce; and distributed object computing. Open only to students of junior or senior standing.

  12. Organ Systems

    NSDL National Science Digital Library

    W. R. Klemm

    2001-01-01

    This "Organ Systems" module has five units of instruction that focus on the main classes of functions that a body must perform. Rather than just naming organs of the body and what they do, they present a perspective on the body as a coordinated group of systems that must do certain things correctly in order to survive and thrive.

  13. Power system

    DOEpatents

    Hickam, Christopher Dale (Glasford, IL)

    2008-03-18

    A power system includes a prime mover, a transmission, and a fluid coupler having a selectively engageable lockup clutch. The fluid coupler may be drivingly connected between the prime mover and the transmission. Additionally, the power system may include a motor/generator drivingly connected to at least one of the prime mover and the transmission. The power-system may also include power-system controls configured to execute a control method. The control method may include selecting one of a plurality of modes of operation of the power system. Additionally, the control method may include controlling the operating state of the lockup clutch dependent upon the mode of operation selected. The control method may also include controlling the operating state of the motor/generator dependent upon the mode of operation selected.

  14. Systems and Components Fuel Delivery System, Water Delivery System, ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    Systems and Components - Fuel Delivery System, Water Delivery System, Derrick Crane System, and Crane System Details - Marshall Space Flight Center, F-1 Engine Static Test Stand, On Route 565 between Huntsville and Decatur, Huntsville, Madison County, AL

  15. File Systems File System Overview

    E-print Network

    Hamey, Len

    Pig Cat Cow Dog Goat Owl Ox Hen Ibis Lion Tree After T fig 5.2 Abstract view - properties System file (reposition) Open Close #12;File Creation Find space in the file system Make a new entry in appropriate storage space used by the file Truncate: Empty file Rename: Modify/move directory entry #12;Other

  16. Processing system

    NASA Technical Reports Server (NTRS)

    Hilland, J. E.

    1983-01-01

    To implement the analysis techniques and to provide end-to-end processing, a system was designed with the following capabilities: receive and catalog data from many sources; organize the data on mass storage for rapid access; edit for reasonableness; create new data sets by sorting on parameter, averaging and merging; provide statistical analysis and display tools; and distribute data on demand. Consideration was given to developing a flexible system that could meet immediate workshop needs and respond to future requirements. System architecture and data set details implemented are discussed.

  17. System Toolbox

    NSDL National Science Digital Library

    System Toolbox is designed for system administrators who deal with a variety of platforms. The site covers Windows NT, General Unix, Novell, Linux, Solaris, HP-UX, and the Mac OS. The "toolbox" for each platform offers annotated links to Tools (Disk Management, Anti-Virus, Security, etc.), Articles, and other useful Links. While the information here is hardly comprehensive, the site offers useful, if often basic, resources for administrators. System Toolbox's brand new History section looks promising, with two articles currently posted, "Von Braun's Slide Rule" and "The Godfather of Computing - Charles Babbage." The Comments section allows users to post questions or comments.

  18. The Systems Integration Modeling System

    SciTech Connect

    Danker, W.J.; Williams, J.R. [USDOE Office of Civilian Radioactive Waste Management, Washington, DC (United States)

    1990-10-01

    This paper discusses the systems integration modeling system (SIMS), an analysis tool for the detailed evaluation of the structure and related performance of the Federal Waste Management System (FWMS) and its interface with waste generators. It`s use for evaluations in support of system-level decisions as to FWMS configurations, the allocation, sizing, balancing and integration of functions among elements, and the establishment of system-preferred waste selection and sequencing methods and other operating strategies is presented. SIMS includes major analysis submodels which quantify the detailed characteristics of individual waste items, loaded casks and waste packages, simulate the detailed logistics of handling and processing discrete waste items and packages, and perform detailed cost evaluations.

  19. Tear System

    MedlinePLUS

    ... or tear drainage. Increased Tear Production and Dry Eyes The eye has two sets of structures that ... and cosmetic surgeon who specializes in the eyelids, orbit, and tear drain system. It’s also important that ...

  20. Earth Systems

    NSDL National Science Digital Library

    Houghton Mifflin Science

    This self-contained module on Earth systems includes a range of fun activities that students can perform in the classroom and at home with family members. They impart important concepts such as observation, identification, measurement, and differentiation.

  1. Recommender systems

    NASA Astrophysics Data System (ADS)

    Lü, Linyuan; Medo, Matúš; Yeung, Chi Ho; Zhang, Yi-Cheng; Zhang, Zi-Ke; Zhou, Tao

    2012-10-01

    The ongoing rapid expansion of the Internet greatly increases the necessity of effective recommender systems for filtering the abundant information. Extensive research for recommender systems is conducted by a broad range of communities including social and computer scientists, physicists, and interdisciplinary researchers. Despite substantial theoretical and practical achievements, unification and comparison of different approaches are lacking, which impedes further advances. In this article, we review recent developments in recommender systems and discuss the major challenges. We compare and evaluate available algorithms and examine their roles in the future developments. In addition to algorithms, physical aspects are described to illustrate macroscopic behavior of recommender systems. Potential impacts and future directions are discussed. We emphasize that recommendation has great scientific depth and combines diverse research fields which makes it interesting for physicists as well as interdisciplinary researchers.

  2. Respiratory System

    NSDL National Science Digital Library

    Jim Bidlack

    The purpose, components, and functions of the respiratory system are presented in this learning through disussion and visualizations. Participants learn about the nasal cavity, pharynx, larynx, trachea, bronchi, bronchioles, and alveoli.

  3. Root systems

    NSDL National Science Digital Library

    N/A N/A (U.S. Government; )

    2004-10-30

    One purpose that roots serve is that of anchoring the plant in the ground. Roots also take up water and nutrients for the plant. Plants all have different root system types to fit their individual needs and locations.

  4. Embedded Systems

    NSDL National Science Digital Library

    Leske, Cavin.

    Embedded systems are dedicated computers designed to perform a specific task. They are usually fairly simple devices that are used in areas where powerful, customizable computers are unnecessary; however, they can also be quite complex on occasion. Embedded systems can be found almost anywhere, including automobiles and cellular phones, and their importance is reflected in their near omnipresence.An excellent introduction to embedded systems can be found in the first three pages of this online course material (1). The educational module gives a thorough definition of embedded systems, several examples of where they are used, and a discussion of their common components. For a more detailed explanation of how these devices are used to control various appliances, motors, and other real world products, this site (2) is worth a visit. Sixteen sections comprise the site, and each includes background information and an example experiment. Although certain equipment is required for the experiments, much can be learned simply from reading the introductions. This enlightening essay (3) documents the history and development of embedded systems. Despite being somewhat specific to the author's life, it effectively illustrates the evolution of embedded systems and their incorporation into many facets of everyday life. A paper presented at the 2003 International Cryptology Conference (4) considers the vulnerability of embedded cryptosystems to side channel attacks, which are different from normal security violations because they involve monitoring parts of the hardware system instead of the software. The authors propose the design of private circuits that are resistant to such attacks. The Center for Robotics and Embedded Systems at the University of Southern California is the source of this paper (5) about networked robots. Although it is somewhat dated, the paper provides some valuable insights into how robots can be used in human environments and how they can be controlled and coordinated with wireless communications. An article from Dedicated Systems Magazine (6) highlights the role of embedded systems in NASA's Mars Exploration Rovers, which were launched in June and July 2003. The technologies that enabled the rovers to have powerful, reliable operation are described. The April 2003 issue of ACM Queue (7), the online magazine of the Association for Computing Machinery, is dedicated to embedded systems. Seven articles are included in the issue, dealing with the design and construction process of embedded devices and the hardware/software interface. Lastly, a short paper that was presented at a computer architecture symposium in January 2003 looks ahead to the realization of ubiquitous computing (8). This technology revolution, which has been predicted for many years, promises to make tiny computers embedded in virtually everything, even clothing and walls. The author focuses on the area of intelligent vehicles and wheeled mobile robots.

  5. Disperse Systems

    NASA Astrophysics Data System (ADS)

    Takeo, Makoto

    1999-03-01

    Interesting applications for disperse systems exist in many areas of modern technology. Weight and cost savings achieved in engineered foams for complex designs and computer-modeled optical pigments for creating astounding effects in coating are but two examples of such diverse applications. In addition to the cost and material reductions already achieved in existing applications, future applications of disperse systems are ripe with many heretofore-undeveloped products possessing unprecedented properties. A thorough understanding of the relationship between microscopic composition and the measurable macroscopic behaviour of disperse systems is necessary for technologists to exploit the unique properties of these systems. With such an understanding, the reader will be equipped to develop new products efficiently and to effectively achieve required material properties. Professor Makoto Takeo, the renowned expert from Portland State University, addresses this need for an understanding of disperse systems in a remarkable new text. The current knowledge base is presented and the underlying principles of these systems are revealed in a straightforward and easily accessible manner. It is an indispensable work for those who want to competently enter this fascinating field, and an absolute must for tomorrow's physicists and materials scientists.

  6. Systems Studies

    SciTech Connect

    Graham, R.L.

    1998-03-17

    The Systems Studies Activity had two objectives: (1) to investigate nontechnical barriers to the deployment of biomass production and supply systems and (2) to enhance and extend existing systems models of bioenergy supply and use. For the first objective, the Activity focused on existing bioenergy markets. Four projects were undertaken: a comparative analysis of bioenergy in Sweden and Austria; a one-day workshop on nontechnical barriers jointly supported by the Production Systems Activity; the development and testing of a framework for analyzing barriers and drivers to bioenergy markets; and surveys of wood pellet users in Sweden, Austria and the US. For the second objective, two projects were undertaken. First, the Activity worked with the Integrated BioEnergy Systems (TBS) Activity of TEA Bioenergy Task XIII to enhance the BioEnergy Assessment Model (BEAM). This model is documented in the final report of the IBS Activity. The Systems Studies Activity contributed to enhancing the feedstock portion of the model by developing a coherent set of willow, poplar, and switchgrass production modules relevant to both the US and the UK. The Activity also developed a pretreatment module for switchgrass. Second, the Activity sponsored a three-day workshop on modeling bioenergy systems with the objectives of providing an overview of the types of models used to evaluate bioenergy and promoting communication among bioenergy modelers. There were nine guest speakers addressing different types of models used to evaluate different aspects of bioenergy, ranging from technoeconomic models based on the ASPEN software to linear programming models to develop feedstock supply curves for the US. The papers from this workshop have been submitted to Biomass and Bioenergy and are under editorial review.

  7. Systemic trauma.

    PubMed

    Goldsmith, Rachel E; Martin, Christina Gamache; Smith, Carly Parnitzke

    2014-01-01

    Substantial theoretical, empirical, and clinical work examines trauma as it relates to individual victims and perpetrators. As trauma professionals, it is necessary to acknowledge facets of institutions, cultures, and communities that contribute to trauma and subsequent outcomes. Systemic trauma-contextual features of environments and institutions that give rise to trauma, maintain it, and impact posttraumatic responses-provides a framework for considering the full range of traumatic phenomena. The current issue of the Journal of Trauma & Dissociation is composed of articles that incorporate systemic approaches to trauma. This perspective extends conceptualizations of trauma to consider the influence of environments such as schools and universities, churches and other religious institutions, the military, workplace settings, hospitals, jails, and prisons; agencies and systems such as police, foster care, immigration, federal assistance, disaster management, and the media; conflicts involving war, torture, terrorism, and refugees; dynamics of racism, sexism, discrimination, bullying, and homophobia; and issues pertaining to conceptualizations, measurement, methodology, teaching, and intervention. Although it may be challenging to expand psychological and psychiatric paradigms of trauma, a systemic trauma perspective is necessary on both scientific and ethical grounds. Furthermore, a systemic trauma perspective reflects current approaches in the fields of global health, nursing, social work, and human rights. Empirical investigations and intervention science informed by this paradigm have the potential to advance scientific inquiry, lower the incidence of a broader range of traumatic experiences, and help to alleviate personal and societal suffering. PMID:24617751

  8. Investigating Army systems and Systems of Systems for value robustness

    E-print Network

    Koo, Kevin C. K. (Kevin Cheng Keong)

    2010-01-01

    This thesis proposes a value robustness approach to architect defense systems and Systems of Systems (SoS). A value robust system or SoS has the ability to provide continued value to stakeholders by performing well to meet ...

  9. Solar System

    NSDL National Science Digital Library

    2007-12-12

    This site is part of the space page of the British Broadcasting Corporation (BBC), and provides information about the Sun, the planets and their moons, and other bodies in the solar system. It contains a travel guide to the Solar System including such topics as what to see, reason to visit, how to get there, and local history. A similar travel guide is then available for the Sun, each of the planets, asteroids, and comets. In addition, multiple links for more detailed information as well as space games and puzzles are provided.

  10. Manufacturing Systems

    NSDL National Science Digital Library

    S Wallace

    2010-07-16

    Objective 7:05 - Students will develop an awareness of the designed World through : Describing a manufacturing system; listing and describing the basic type of manufacturing; defining production and manufacturing enterprise;defining AGV, CAD, CIM, CAM, CNC, production tooling, automation, and material processes. Day 1: Introduction/Background Objective Preassessment: Use a KWL chart to assess your students prior knowledge. This will also help you deal with any misconceptions regarding manufacturing system. Students will use the curriculum companion PowerPoint and Objective 7.05 Outline to develop an awarness of: Define manufacturing List and describe the basic types of Manufacturing Student ...

  11. System Overview

    NSDL National Science Digital Library

    This is a description for a learning module from Maricopa Advanced Technology Education Center. This PDF describes the module; access may be purchased by visiting the MATEC website. Technicians face the challenge of building and maintaining knowledge and skills that are applicable to microcomputer architecture. These challenges include keeping up to date on improvements in PC components, changes in PC hardware configurations, integration of new devices within PC systems, and the ability to readily apply their knowledge within the microcomputer manufacturing industry. This module provides an introduction and overview to the major system features that define the architecture of an Intel-based PC. A unique multimedia self-tutorial is included.

  12. The Nervous System Nervous System Functions

    E-print Network

    Brown, Christopher A.

    1 The Nervous System Nervous System Functions The primary functions of the nervous system are...the whole nervous system #12;5 Nervous System Organization Central Nervous System (CNS) Brain Spinal Cord Peripheral Nervous System Somatic NS--receives/sends messages to muscles Autonomic NS

  13. Immune System 1 Running Head: IMMUNE SYSTEM

    E-print Network

    Meagher, Mary

    Immune System 1 Running Head: IMMUNE SYSTEM Immune System Structure and Function Mary W. Meagher: 979-845-4727 CITATION: Meagher, M. W. (2004). Immune system structure and function. In A. Christensen System 2 Immune System Structure and Function The immune system is engaged in a constant surveillance

  14. Systems Science

    ERIC Educational Resources Information Center

    Christakis, Alexander; Hammond, Debora; Jackson, Michael; Laszlo, Alexander; Mitroff, Ian; Snowden, Dave; Troncale, Len; Carr-Chellman, Alison; Spector, J. Michael; Wilson, Brent

    2013-01-01

    Scholars representing the field of systems science were asked to identify what they considered to be the most exciting and imaginative work currently being done in their field, as well as how that work might change our understanding. The scholars included Alexander Christakis, Debora Hammond, Michael Jackson, Alexander Laszlo, Ian Mitroff, Dave…

  15. Immune System

    EPA Science Inventory

    A properly functioning immune system is essential to good health. It defends the body against infectious agents and in some cases tumor cells. Individuals with immune deficiencies resulting from genetic defects, diseases (e.g., AIDS, leukemia), or drug therapies are more suscepti...

  16. Support Systems

    E-print Network

    Wood, Jody

    2009-04-28

    thesis: SUPORT SYSTEMS Commite: __________________________ Chairperson __________________________ __________________________ Date approved: March 24, 2009 iii Abstract Support... has a double-edged consequence. On one hand it offers anonymity. But the resulting privacy comes at a cost ? it requires emotional distance; that distance is what can make someone fel lonely in a crowded room. A study published in 2006 by American...

  17. Tychonic System

    Microsoft Academic Search

    P. Murdin

    2000-01-01

    The world system proposed in 1583 by the Danish astronomer Tycho Brahe (1546-1601). Unable to accept the Copernican doctrine that the Earth moves around the Sun, he put forward the view, later disproved by Kepler (1571-1630), that the planets move around the Sun, but the Sun and Moon move around the Earth. The theory explained the observed variations of the

  18. Memory systems

    Microsoft Academic Search

    Larry R. Squire; Donald Chai

    1998-01-01

    Two recent findings are summarized here that bear on the organization of memory and brain systems. First, the capacity for simple recognition of familiarity (a form of declarative memory) depends on the hippocampal region in both humans and nonhuman primates. Second, probabilistic classification learning (a form of nondeclarative memory akin to habit learning) depends on the caudate nucleus and putamen.

  19. Lithography system

    Microsoft Academic Search

    P. Kruit

    1998-01-01

    Lithography system comprising a light source producing a light beam directed to a mask (3) located in a mask level and an optical demagnifier (4-6) for demagnifying by a factor and focusing the beam. The light beam is focused on a converter element (8) for converting said beam in a further beam having a smaller wavelength than UV light. The

  20. POWER SYSTEMS

    Microsoft Academic Search

    1962-01-01

    Low power output of other devices at this time dictates the use of ; nuclear-reactor systems for manned space explorations. Work up to the present is ; briefly reviewed, and progress and utilization of other power supplies are ; discussed. Pros and cons of solar cells, fuel cells, and thermoelectric and ; thermionic devices are included as well as consideration

  1. Circulatory system

    NSDL National Science Digital Library

    Katie Hale (CSUF; )

    2007-01-22

    The circulatory system includes the heart, blood vessels, and blood. Arteries take blood with oxygen to our organs; veins bring deoxygenated blood to the heart (to be pumped to the lungs to get oxygen). Arteries and veins bring essential nutrients from digestion (such as glucose) to our tissues as well.

  2. Laser system

    Microsoft Academic Search

    H. Karning; F. Prein; K. H. Vierling

    1985-01-01

    A laser system with a folded beam path is disclosed. The beam path is formed by a plurality of mirrors. Mirrors reflect light in a closed loop from one mirror to the other. Electrodes are disposed on opposite sides of the path between the mirrors and form channels through which the path extends. In addition to serving to direct the

  3. D System

    NSDL National Science Digital Library

    D-System is conducting research into program analysis, code generation, and programming tools for data-parallel languages like High Performance Fortran. If this research is successful, computational scientists and engineers will be able to write machine-independent, data-parallel programs for a broad spectrum of scientific applications, and achieve high performance with these programs on a variety of parallel architectures.

  4. Manufacturing Systems

    NASA Technical Reports Server (NTRS)

    1986-01-01

    Advanced Process Systems designed a portable purge unit for NASA use. The unit is designed to protect flight and ground crews from toxic fumes and to provide a post-landing controlled environment for sensitive electronic equipment. Although the work has future spinoff potential, it has also led to a research and development program in conjunction with several universities.

  5. Ventilation systems

    NASA Astrophysics Data System (ADS)

    Olander, L.

    Two different types of ventilation systems and their components are addressed: general ventilation and local or process ventilation. Calculation of the flow rates used in the different systems is addressed. The many different types of flow calculations, how they are used, and some of the computer programs that could be used for these calculations are described. Some calculations start with assumptions regarding air flow rates in rooms and locals. The flow rates can be chosen from rule of thumb or regulations or standards. Thereafter the designer calculates necessary heat and cooling loads, pressure drops, fan effect, etc. The other type of calculation is not very common. By using demands on concentrations, temperatures or air velocities the flow rates are calculated. These calculations include contaminant source generation rates, use of models (physical and theoretical), and computational fluid dynamics. The latter are focused upon.

  6. Systemic treatment.

    PubMed

    Reig, Maria; Gazzola, Alessia; Di Donato, Roberto; Bruix, Jordi

    2014-10-01

    In the last years the management of patients with liver cancer has been improved. The BCLC staging/treatment strategy identifies the optimal candidates for each treatment option and sorafenib is the only effective systemic treatment. Others (sunitinib, brivanib, linifanib, everolimus, ramucirumab) have failed in terms of safety/survival benefit. Some patients at intermediate/early stage, may be considered for systemic therapy when options of higher priority may have failed or not be feasible. The 800 mg/day is the recommended starting dose. Close follow-up and easy access for the patients so that they can report any adverse event and implement dose adjustments is the key point in the management of them. Development of early dermatologic adverse events has been correlated with better outcome and the pattern of radiologic progression characterizes better the prognosis/outcome of these patients. Treatment beyond progression may be considered if there is no option for a second line research trial. PMID:25260318

  7. Burner systems

    DOEpatents

    Doherty, Brian J. (Marblehead, MA)

    1984-07-10

    A burner system particularly useful for downhole deployment includes a tubular combustion chamber unit housed within a tubular coolant jacket assembly. The combustion chamber unit includes a monolithic tube of refractory material whose inner surface defines the combustion zone. A metal reinforcing sleeve surrounds and extends the length of the refractory tube. The inner surface of the coolant jacket assembly and outer surface of the combustion chamber unit are dimensioned so that those surfaces are close to one another in standby condition so that the combustion chamber unit has limited freedom to expand with that expansion being stabilized by the coolant jacket assembly so that compression forces in the refractory tube do not exceed about one-half the safe compressive stress of the material; and the materials of the combustion chamber unit are selected to establish thermal gradient parameters across the combustion chamber unit to maintain the refractory tube in compression during combustion system start up and cool down sequences.

  8. Surveying System

    NASA Technical Reports Server (NTRS)

    1988-01-01

    Sunrise Geodetic Surveys are setting up their equipment for a town survey. Their equipment differs from conventional surveying systems that employ transit rod and chain to measure angles and distances. They are using ISTAC Inc.'s Model 2002 positioning system, which offers fast accurate surveying with exceptional signals from orbiting satellites. The special utility of the ISTAC Model 2002 is that it can provide positioning of the highest accuracy from Navstar PPS signals because it requires no knowledge of secret codes. It operates by comparing the frequency and time phase of a Navstar signal arriving at one ISTAC receiver with the reception of the same set of signals by another receiver. Data is computer processed and translated into three dimensional position data - latitude, longitude and elevation.

  9. Tychonic System

    NASA Astrophysics Data System (ADS)

    Murdin, P.

    2000-11-01

    The world system proposed in 1583 by the Danish astronomer Tycho Brahe (1546-1601). Unable to accept the Copernican doctrine that the Earth moves around the Sun, he put forward the view, later disproved by Kepler (1571-1630), that the planets move around the Sun, but the Sun and Moon move around the Earth. The theory explained the observed variations of the phases of Venus, for which the Ptolemai...

  10. Gasification system

    DOEpatents

    Haldipur, Gaurang B. (Hempfield, PA); Anderson, Richard G. (Penn Hills, PA); Cherish, Peter (Bethel Park, PA)

    1985-01-01

    A method and system for injecting coal and process fluids into a fluidized bed gasification reactor. Three concentric tubes extend vertically upward into the fluidized bed. Coal particulates in a transport gas are injected through an inner tube, and an oxygen rich mixture of oxygen and steam are injected through an inner annulus about the inner tube. A gaseous medium relatively lean in oxygen content, such as steam, is injected through an annulus surrounding the inner annulus.

  11. Gasification system

    DOEpatents

    Haldipur, Gaurang B. (Hempfield, PA); Anderson, Richard G. (Penn Hills, PA); Cherish, Peter (Bethel Park, PA)

    1983-01-01

    A method and system for injecting coal and process fluids into a fluidized bed gasification reactor. Three concentric tubes extend vertically upward into the fluidized bed. Coal particulates in a transport gas are injected through an inner tube, and an oxygen rich mixture of oxygen and steam are injected through an inner annulus about the inner tube. A gaseous medium relatively lean in oxygen content, such as steam, is injected through an annulus surrounding the inner annulus.

  12. Injection System

    SciTech Connect

    Thomas, J.E.

    1998-06-15

    Felton Medical identified a market need for a handheld portable single shot needleless injection system. This market need was being driven by a global need to eliminate the hazards of medical needle disposal by providing an alternative injection method. Felton Medical brought to this partnership individuals experienced in the research, development, design, assembly, marketing, and servicing of precision animal health medical devices. AlliedSignal provided manufacturing understanding and a facility proficient in product development for small precision mechanical parts and assemblies.

  13. Nanoelectromechanical Systems

    Microsoft Academic Search

    M. L. Roukes

    2000-01-01

    Nanoelectromechanical systems, or NEMS, are MEMS scaled to submicron\\u000adimensions. In this size regime, it is possible to attain extremely high\\u000afundamental frequencies while simultaneously preserving very high mechanical\\u000aresponsivity (small force constants). This powerful combination of attributes\\u000atranslates directly into high force sensitivity, operability at ultralow power,\\u000aand the ability to induce usable nonlinearity with quite modest control forces.

  14. Systemic illness

    Microsoft Academic Search

    Marta Bondanelli; Maria Chiara Zatelli; Maria Rosaria Ambrosio; Ettore C. degli Uberti

    2008-01-01

    Systemic illnesses are associated with alterations in the hypothalamic–pituitary–peripheral hormone axes, which represent\\u000a part of the adaptive response to stressful events and may be influenced by type and severity of illness and\\/or pharmacological\\u000a therapy. The pituitary gland responds to an acute stressful event with two secretory patterns: adrenocorticotropin (ACTH),\\u000a prolactin (PRL) and growth hormone (GH) levels increase, while luteinizing hormone

  15. Copernican System

    NASA Astrophysics Data System (ADS)

    Murdin, P.

    2000-11-01

    The heliocentric (i.e. `Sun-centered') theory proposed by the Polish astronomer Nicolaus Copernicus (1473-1543), and published by him in 1543 in his book, De Revolutionibus Orbium Coelestium. In this system Copernicus placed the Sun at the center of the universe and regarded the Earth and the planets as moving around it in circular orbits. Because of his retention of the notion of circular motion...

  16. Braking system

    DOEpatents

    Norgren, D.U.

    1982-09-23

    A balanced braking system comprising a plurality of braking assemblies located about a member to be braked. Each of the braking assemblies consists of a spring biased piston of a first material fitted into a body of a different material which has a greater contraction upon cooling than the piston material. The piston is provided with a recessed head portion over which is positioned a diaphragm and forming a space therebetween to which is connected a pressurized fluid supply. The diaphragm is controlled by the fluid in the space to contact or withdraw from the member to be braked. A cooling means causes the body within which the piston is fitted to contract more than the piston, producing a tight shrink fit therebetween. The braking system is particularly applicable for selectively braking an arbor of an electron microscope which immobilizes, for example, a vertically adjustable low temperature specimen holder during observation. The system provides balanced braking forces which can be easily removed and re-established with minimal disturbance to arbor location.

  17. Multiprocessor system

    SciTech Connect

    Katzman, J.A.; Bartlett, J.F.; Bixler, R.M.; Davidow, W.H.; Despotakis, J.A.; Graziano, P.J.; Green, M.D.; Greig, D.A.; Hayashi, S.J.; Mackie, D.R.

    1987-06-09

    This patent describes an input/output system for a multiprocessor system of the kind in which a plurality of separate processor modules are interconnected for processing, each of the processor modules having a central processing unit and an associated main memory, at least pair of the processor modules each having an input/output channel with each such channel being independent of other such channels, the input/output system comprising: device controller for controlling the transfer of data between the pair of processor modules and a peripheral device, the device controller having multiple ports, with each such port being failure-independent of the other such ports and connected to a respective one of the input/output channels, each port including an enable latch operable in response to a disable command communicated to the port by the associated processor module to disable the port from any further data communication; the device controller including interface logic means responsive to signaling from a one of the processor modules for selecting one of the ports to the exclusion of the other of the ports for data transfers between the peripheral device and the one processor module connected to the selected port through its associated input/output channel; and interprocessor bus means communicating the pair of processor modules to one another for data transfer therebetween; each of processors modules being operable to provide a data communication path to the peripheral device for itself and for the other of the pair of processor modules.

  18. ESMDIS: Earth System Model Data Information System

    Microsoft Academic Search

    Yuechen Chi; Carlos R. Mechoso; Michael Stonebraker; Keith Sklower; Richard Troy; Richard R. Muntz; Edmond Mesrobian

    1997-01-01

    The goal of the development of the Earth System Model Data Information System (ESMDIS) are to provide Earth scientists with: 1) an output management system of Earth System Model (ESM) to browse the metadata and retrieve a desired subset of ESM output; 2) an analysis system of ESM output and other related datasets; 3) an automated pipelining system for ESM

  19. Artificial immune system based intrusion detection system

    Microsoft Academic Search

    Vadim D. Kotov; Vladimir I. Vasilyev

    2009-01-01

    In this work the intrusion detection system (IDS) based on artificial immune systems is presented. This IDS traces sequences of applications system calls and then uses the negative selection algorithm to detect changes in the normal system behavior. It works on MS Windows operation system. This IDS also shows a high performance on local area networks when artificial immune systems

  20. Purification system

    NASA Technical Reports Server (NTRS)

    Flanagan, David T. (inventor); Gibbons, Randall E. (inventor)

    1992-01-01

    A system for prolonging the life of a granulated activated charcoal (GAC) water treatment device is disclosed in which an ultraviolet light transparent material is used to constrain water to flow over carbon surfaces. It is configured to receive maximum flux from a UV radiation source for the purpose of preventing microbial proliferation on the carbon surfaces; oxidizing organic contaminants adsorbed from the water onto the carbon surfaces and from biodegradation of adsorbed microbial forms; disinfecting water; and oxidizing organic contaminants in the water.

  1. Sterilization System

    NASA Technical Reports Server (NTRS)

    1990-01-01

    Cox Sterile Products, Inc.'s Rapid Heat Transfer Sterilizer employs a heat exchange process that induces rapid air movement; the air becomes the heat transfer medium, maintaining a uniform temperature of 375 degrees Fahrenheit. It features pushbutton controls for three timing cycles for different instrument loads, a six-minute cycle for standard unpackaged instruments, eight minutes for certain specialized dental/medical instruments and 12 minutes for packaged instruments which can then be stored in a drawer in sterile condition. System will stay at 375 degrees all day. Continuous operation is not expensive because of the sterilizer's very low power requirements.

  2. Relaxation System

    NASA Technical Reports Server (NTRS)

    1987-01-01

    Environ Corporation's relaxation system is built around a body lounge, a kind of super easy chair that incorporates sensory devices. Computer controlled enclosure provides filtered ionized air to create a feeling of invigoration, enhanced by mood changing aromas. Occupant is also surrounded by multidimensional audio and the lighting is programmed to change colors, patterns, and intensity periodically. These and other sensory stimulators are designed to provide an environment in which the learning process is stimulated, because research has proven that while an individual is in a deep state of relaxation, the mind is more receptive to new information.

  3. Bearing system

    DOEpatents

    Kapich, Davorin D. (Carlsbad, CA)

    1987-01-01

    A bearing system includes backup bearings for supporting a rotating shaft upon failure of primary bearings. In the preferred embodiment, the backup bearings are rolling element bearings having their rolling elements disposed out of contact with their associated respective inner races during normal functioning of the primary bearings. Displacement detection sensors are provided for detecting displacement of the shaft upon failure of the primary bearings. Upon detection of the failure of the primary bearings, the rolling elements and inner races of the backup bearings are brought into mutual contact by axial displacement of the shaft.

  4. Onsite Wastewater Treatment Systems: Spray Distribution System

    E-print Network

    Lesikar, Bruce J.

    2008-10-23

    Disinfectant storage Pump tank Spray heads Wastewater treatment system Onsite wastewater treatment systems Spray distribution system L-5303 9-08 Figure 1: A spray distribution system with treatment and disinfection devices. S pray distribution... to install of all wastewa- ter distribution systems. However, they require the most wastewater treatment, which increases the cost of a com- plete treatment and final treatment and dispersal system. Spray systems also help conserve Texas? freshwater...

  5. Gastrointestinal system

    PubMed Central

    Cheng, Leo K.; O’Grady, Gregory; Du, Peng; Egbuji, John U.; Windsor, John A.; Pullan, Andrew J.

    2014-01-01

    The functions of the gastrointestinal (GI) tract include digestion, absorption, excretion, and protection. In this review, we focus on the electrical activity of the stomach and small intestine, which underlies the motility of these organs, and where the most detailed systems descriptions and computational models have been based to date. Much of this discussion is also applicable to the rest of the GI tract. This review covers four major spatial scales: cell, tissue, organ, and torso, and discusses the methods of investigation and the challenges associated with each. We begin by describing the origin of the electrical activity in the interstitial cells of Cajal, and its spread to smooth muscle cells. The spread of electrical activity through the stomach and small intestine is then described, followed by the resultant electrical and magnetic activity that may be recorded on the body surface. A number of common and highly symptomatic GI conditions involve abnormal electrical and/or motor activity, which are often termed functional disorders. In the last section of this review we address approaches being used to characterize and diagnose abnormalities in the electrical activity and how these might be applied in the clinical setting. The understanding of electrophysiology and motility of the GI system remains a challenging field, and the review discusses how biophysically based mathematical models can help to bridge gaps in our current knowledge, through integration of otherwise separate concepts. PMID:20836011

  6. Systemic illness.

    PubMed

    Bondanelli, Marta; Zatelli, Maria Chiara; Ambrosio, Maria Rosaria; degli Uberti, Ettore C

    2008-01-01

    Systemic illnesses are associated with alterations in the hypothalamic-pituitary-peripheral hormone axes, which represent part of the adaptive response to stressful events and may be influenced by type and severity of illness and/or pharmacological therapy. The pituitary gland responds to an acute stressful event with two secretory patterns: adrenocorticotropin (ACTH), prolactin (PRL) and growth hormone (GH) levels increase, while luteinizing hormone (LH), follicle-stimulating hormone (FSH) and thyrotropin (TSH) levels may either decrease or remain unchanged, associated with a decreased activity of their target organ. In protracted critical illness, there is a uniformly reduced pulsatile secretion of ACTH, TSH, LH, PRL and GH, causing a reduction in serum levels of the respective target-hormones. These adaptations are initially protective; however, if inadequate or excessive they may be dangerous and may contribute to the high morbidity and mortality risk of these patients. There is no consensus regarding the type of approach, as well as the criteria to use to define pituitary axis function in critically ill patients. We here provide a critical approach to pituitary axis evaluation during systemic illness. PMID:18404385

  7. Solar System!

    NSDL National Science Digital Library

    2014-09-18

    An introduction to our solar system—the planets, our Sun and Moon. To begin, students learn about the history and engineering of space travel. They make simple rockets to acquire a basic understanding Newton's third law of motion. They explore energy transfer concepts and use renewable solar energy for cooking. They see how engineers design tools, equipment and spacecraft to go where it is too far and too dangerous for humans. They explore the Earth's water cycle, and gravity as applied to orbiting bodies. They learn the steps of the design process as they create their own models of planetary rovers made of edible parts. Students conduct experiments to examine soil for signs of life, and explore orbit transfers. While studying about the International Space Station, they investigate the realities of living in space. Activities explore low gravity on human muscles, eating in microgravity, and satellite tracking. Finally, students learn about the context of our solar system—the universe—as they learn about the Hubble Space Telescope, celestial navigation and spectroscopy.

  8. Computer Systems Administrator

    E-print Network

    Computer Systems Administrator Fort Collins, CO POSITION A Computer Systems Administrator (Non activities. RESPONSIBILITIES The System Administrator will provide Unix/Linux, Windows computer system or computer science, and three years computer systems administration experience. DURATION The work is planned

  9. Prosthetic Knee Systems

    MedlinePLUS

    ... of fluid control systems — pneumatic (using air) and hydraulic (using fluid). Pneumatic control. These systems: compress air ... control than friction systems are less effective than hydraulic systems. Hydraulic control. These systems: use liquid (usually ...

  10. Systems Science Harder House

    E-print Network

    of managing complex social and technical systems. In mathematics, engineering, business administration, and the natural and social sciences, systems theorists continue to make important contributions to the growth, dynamical systems, game theory, information theory, neural networks, systems approach, system dynamics

  11. Elec 331 -Nervous System Nervous System

    E-print Network

    Pulfrey, David L.

    Elec 331 - Nervous System 1 Nervous System · Central Nervous System ­ Brain ­ Spinal Chord · Peripheral Nervous System ­ "Conductive" network between CNS & organs ­ Neurones · Individual cells · May act Flow of Information neurone #12;Elec 331 - Nervous System 2 Cell States · Resting Potential (Vc = -70m

  12. Systems Biology and Systems Medicine: Technology,

    E-print Network

    Systems Biology and Systems Medicine: Technology, Measurement and Validation Lee Hood Institute for Systems Biology, Seattle How Might One Think About Systems Biology? #12;Radio Waves Sound Waves #12;Immune Response Intra- and inter- cellular networks Development Physiology #12;Contemporary Systems Biology

  13. Artificial Immune Systems 209 Artificial Immune Systems

    E-print Network

    Timmis, Jon

    Artificial Immune Systems 209 Chapter XI Artificial Immune Systems: Using the Immune System, Idea Group Publishing. The immune system is highly distributed, highly adaptive, self encounters. From a computational view- point, the immune system has much to offer by way of inspiration

  14. Systems approach to space plasma systems

    Microsoft Academic Search

    Richard Boynton; Simon Walker

    2010-01-01

    The application of nonlinear system identification methodology was used to review complex space plasma systems. It is shown how the nonlinear system identification approach can lead to a comprehensive description of dynamical processes in developed space plasma turbulences. It is also explained how nonlinear system identification can access the analytical approach to complex dynamical systems such as the magnetosphere.

  15. Skeletal System

    NSDL National Science Digital Library

    VU Bioengineering RET Program,

    Through this unit, written for an honors anatomy and physiology class, students become familiar with the human skeletal system and answer the Challenge Question: When you get home from school, your mother grabs you, and you race to the hospital. Your grandmother fell and was rushed to the emergency room. The doctor tells your family your grandmother has a fractured hip, and she is referring her to an orthopedic specialist. The orthopedic doctor decides to perform a DEXA scan. The result show her BMD is -3.3. What would be a probable diagnosis to her condition? What are some possible causes of her condition? Should her daughter and granddaughter be worried about this condition, and if so, what are measures they could take to prevent this from happening to them?

  16. Bionanomechanical Systems

    NASA Astrophysics Data System (ADS)

    Schmidt, Jacob J.; Montemagno, Carlo D.

    2004-08-01

    Over the past two decades, advances in biophysical instrumentation have enabled the study of molecular motors at the single molecule level. These studies have inspired the creation of biological/inorganic systems powered by such motors in an attempt to exploit their unique sizes, speeds, functions, and energy utilization capabilities. We give a brief overview of the state-of-the-art of biological and synthetic molecular motors and discuss some initial efforts to exploit their function in engineered structures. We also briefly discuss the construction of devices powered by organized and coordinated arrays of millions of motors in which the growth of cardiac muscle tissue over a microfabricated silicon "skeleton" is directed and controlled.

  17. Systemic contact dermatitis Systemic contact dermatitis Systemic contact dermatitis Systemic contact dermatitis Systemic contact dermatitis

    Microsoft Academic Search

    A. K. Bajaj; A. Saraswat

    Systemic contact dermatitis (SCD), better termed systemically reactivated allergic contact dermatitis, is a type of contact hypersensitivity reaction in which ingestion or other systemic exposure to a contact allergen occurs in an already sensitized person. Although the initial sensitizing exposure is usually by topical application, re-exposure by the oral, intravenous or inhalation routes can cause SCD. Even percutaneous exposure through

  18. Systemic Risk in the International System

    E-print Network

    Ingo Piepers

    2009-10-15

    The risk of systemic war seems dependant on the level of criticality and sensitivity of the International System, and the system's conditions. The level of criticality and sensitivity is dependant on the developmental stage of the International System. Initially, following a systemic war, the increase of the level of criticality and sensitivity go hand in hand. However, at a certain stage the sensitivity of the International System for larger sized wars decreases; as a consequence of a network effect, we argue. This network effect results in increased local stability of the System. During this phase the criticality of the International System steadily increases, resulting in a release deficit. This release deficit facilitates a necessary build up of energy to push the International System, by means of systemic war, into a new stability domain. Systemic war is functional in the periodic rebalancing of an anarchistic international system.

  19. 4. System Definition 16 4. System Definition

    E-print Network

    Berlin,Technische Universität

    4. System Definition 16 _____________________________________________________________________________ 4. System Definition Based on our knowledge that we can "join" the dynamic characteristics-up, complete system. A general and simple example of substructuring is the source-transmission element

  20. Onsite Wastewater Treatment Systems: Spray Distribution System 

    E-print Network

    Lesikar, Bruce J.

    2008-10-23

    Spray distribution systems for wastewater are much like lawn sprinkler systems, in that they spray treated wastewater over the surface of a yard. This publication explains how spray distribution systems work, what their design requirements are...

  1. System safety education focused on system management

    NASA Technical Reports Server (NTRS)

    Grose, V. L.

    1971-01-01

    System safety is defined and characteristics of the system are outlined. Some of the principle characteristics include role of humans in hazard analysis, clear language for input and output, system interdependence, self containment, and parallel analysis of elements.

  2. Expanding Alternative Delivery Systems.

    ERIC Educational Resources Information Center

    Baltzer, Jan A.

    Alternative educational delivery systems that might be useful to community colleges are considered. The following categories of delivery systems are covered: broadcast delivery systems; copy delivery systems, print delivery systems, computer delivery systems, telephone delivery systems, and satellites. Among the applications for broadcast…

  3. Integrated Nanofluidic Systems for Systems Biotechnology

    E-print Network

    Fisher, Frank

    Integrated Nanofluidic Systems for Systems Biotechnology Wednesday October 28 2009 Burchard 118, 11 in prestigious journals including Science and Nature Biotechnology. Hong's research interests include Bio

  4. Incinerator system

    SciTech Connect

    Rathmell, R.K.

    1986-10-07

    An incineration system is described which consists of: combustion chamber structure having an inlet, an outlet, and burner structure in the combustion chamber, heat exchanger structure defining a chamber, divider structure between the heat exchanger chamber and the combustion chamber, an array of tubes extending through the heat exchanger chamber to the inlet of the combustion chamber at the divider structure. The heat exchanger chamber has an inlet coupled to the outlet of the combustion chamber for flow of the combustion products discharged from the combustion chamber through the heat exchanger chamber over the tubes in heat exchange relation, and an outlet for discharge of products from the heat exchanger chamber, aspirator sleeve structure secured to the divider structure between the heat exchanger chamber and the combustion chamber. Each aspirator sleeve receives the outlet end of a heat exchanger tube in slip fit relation so that the heat exchanger tubes are free to thermally expand longitudinally within the aspirator sleeves, and means for flowing vapor through the heat exchanger tubes into the combustion chamber at sufficiently high velocity to produce a reduced pressure effect in the aspirator sleeves in the heat exchanger chamber to draw a minor fraction of combustion products through the aspirator sleeves into the combustion chamber for reincineration.

  5. Separation system

    DOEpatents

    Rubin, Leslie S. (Newton, MA)

    1986-01-01

    A separation system for dewatering radioactive waste materials includes a disposal container, drive structure for receiving the container, and means for releasably attaching the container to the drive structure. Separation structure disposed in the container adjacent the inner surface of the side wall structure retains solids while allowing passage of liquids. Inlet port structure in the container top wall is normally closed by first valve structure that is centrifugally actuated to open the inlet port and discharge port structure at the container periphery receives liquid that passes through the separation structure and is normally closed by second valve structure that is centrifugally actuated to open the discharge ports. The container also includes coupling structure for releasable engagement with the centrifugal drive structure. Centrifugal force produced when the container is driven in rotation by the drive structure opens the valve structures, and radioactive waste material introduced into the container through the open inlet port is dewatered, and the waste is compacted. The ports are automatically closed by the valves when the container drum is not subjected to centrifugal force such that containment effectiveness is enhanced and exposure of personnel to radioactive materials is minimized.

  6. Communication Systems Chair of Communication Systems

    E-print Network

    Schindelhauer, Christian

    1 | 27 Communication Systems 21st lecture Chair of Communication Systems Department of Applied NATed and proxied HTTP connection of a client? Communication Systems Q&A #12;3 | 27 3rd and last part of the communication systems lecture: digital telephony For a rather long time telephone and data networks were

  7. System design description cone penetrometer system

    SciTech Connect

    Seda, R.Y., Westinghouse Hanford

    1996-08-12

    The system design description documents in detail the design of the cone penetrometer system. The systems includes the cone penetrometer physical package, raman spectroscopy package and moisture sensor package. Information pertinent to the system design, development, fabrication and testing is provided.

  8. System Dynamics, Systems Thinking, and Soft OR

    Microsoft Academic Search

    Jay W. Forrester

    1992-01-01

    System dynamics, systems thinking, and soft operations research (soft OR) all aspire to understanding and improvement of systems. In all, the first step interprets the real world into a description used in following stages. In system dynamics, description leads to equations of a model, simulation to understand dynamic behavior, evaluation of alternative policies, education and choice of a better policy,

  9. Biometric System Security Systems and Computer Engineering

    E-print Network

    Adler, Andy

    Biometric System Security Andy Adler Systems and Computer Engineering Carleton University, Ottawa to confidentiality and integrity". Defining biometrics system security is difficult, because of the ways biometric systems differ from tradi- tional computer and cryptographic security [40]. Implicit in all definitions

  10. Communication Systems Chair of Communication Systems

    E-print Network

    Schindelhauer, Christian

    ;3 | 36 Communication Systems GSM interfaces and components #12;4 | 36 Communication Systems GSM (HLR) #12;5 | 36 Communication Systems GSM interfaces and components The several MSC (Operation and Maintenance Center) ­ Network Administration #12;6 | 36 Communication Systems GSM interfaces

  11. Logical Systems Incorporated The Help Systems

    E-print Network

    Mann, Tim

    Logical Systems Incorporated The Help Systems T A B L E O F C O N T E N T S Introduction ..................................... page 2 HELP/CMD ..................................... page 3 HELPRESx ................................... page 17 #12;LDOS Help System Page 1 The LDOS HELP Systems Introduction This documentation covers all

  12. System on Chip or System on Package?

    Microsoft Academic Search

    Rao R. Tummala; Vijay K. Madisetti

    1999-01-01

    The authors propose a new system design paradigm, the system on package, which uses electronic product reengineering to meet time-to-market and performance requirements. The system on package promises a higher return on investment than the system on chip

  13. Complex System Classification

    E-print Network

    Magee, Christopher

    2004-07-24

    The use of terms such as “Engineering Systems”, “System of systems” and others have been coming into greater use over the past decade to denote systems of importance but with implied higher complexity than for the term ...

  14. Mechanical systems: A compilation

    NASA Technical Reports Server (NTRS)

    1975-01-01

    A compilation of several mechanized systems is presented. The articles are contained in three sections: robotics, industrial mechanical systems, including several on linear and rotary systems and lastly mechanical control systems, such as brakes and clutches.

  15. Immune System (For Parents)

    MedlinePLUS

    ... can lead to illness and infection. About the Immune System The immune system is the body's defense against ... that cause colds. Back Continue Problems of the Immune System Disorders of the immune system fall into four ...

  16. Immune System Involvement

    MedlinePLUS

    ... With Health Plans For Your Patients Donate The Immune System and Psoriasis In 1979, researchers coincidentally found that ... immune system is called immunology. How does the immune system affect psoriasis? A normal immune system protects the ...

  17. The V distributed system

    Microsoft Academic Search

    David R. Cheriton

    1988-01-01

    The V distributed System was developed at Stanford University as part of a research project to explore issues in distributed systems. Aspects of the design suggest important directions for the design of future operating systems and communication systems.

  18. Cooling water system design

    Microsoft Academic Search

    Jin-Kuk Kim; Robin Smith

    2001-01-01

    Research on cooling systems to date has focussed on the individual components of cooling systems, not the system as a whole. Cooling water systems should be designed and operated with consideration of all the cooling system components because of the interactions between cooling water networks and the cooling tower performance. In re-circulating cooling water systems, cooling water from the cooling

  19. Ocean observing systems demystified

    Microsoft Academic Search

    Luis Bermudez; Eric Delory; T. O'Reilly; Joaquin del Rio Fernandez

    2009-01-01

    An ocean observing system could be defined as a set of independent elements that interact to form a whole for the purpose of observing ocean data. But, what is a system? Is a sensor a system? Is a buoy a system? Is a collection of stations a system? This paper defines the components of an ocean observing system and how

  20. Visual inspection management system

    Microsoft Academic Search

    S. H. Huang; L. Y. Lee; C. C. Lou; K. R. Ling

    2000-01-01

    Using information technology to create the procedures for the in-line inspection training, quality control testing, audit and control etc, in order to improve the defect inspection process and enhance the fab yield. This system contains several sub-systems including the checking card system, the image exam system, the defect library & training system, the image record system records. The checking card

  1. Number Systems Introduction & Objectives

    E-print Network

    Bouhraoua, Abdelhafid

    number system that was in common use is the decimal number system ( ) which has a total of 10 digits (0 to the more familiar decimal system · In this lesson, you will learn: What is meant by a weighted number system. Basic features of weighted number systems. Commonly used number systems, e.g. decimal, binary

  2. System Software Framework for System of Systems Avionics

    NASA Technical Reports Server (NTRS)

    Ferguson, Roscoe C.; Peterson, Benjamin L; Thompson, Hiram C.

    2005-01-01

    Project Constellation implements NASA's vision for space exploration to expand human presence in our solar system. The engineering focus of this project is developing a system of systems architecture. This architecture allows for the incremental development of the overall program. Systems can be built and connected in a "Lego style" manner to generate configurations supporting various mission objectives. The development of the avionics or control systems of such a massive project will result in concurrent engineering. Also, each system will have software and the need to communicate with other (possibly heterogeneous) systems. Fortunately, this design problem has already been solved during the creation and evolution of systems such as the Internet and the Department of Defense's successful effort to standardize distributed simulation (now IEEE 1516). The solution relies on the use of a standard layered software framework and a communication protocol. A standard framework and communication protocol is suggested for the development and maintenance of Project Constellation systems. The ARINC 653 standard is a great start for such a common software framework. This paper proposes a common system software framework that uses the Real Time Publish/Subscribe protocol for framework-to-framework communication to extend ARINC 653. It is highly recommended that such a framework be established before development. This is important for the success of concurrent engineering. The framework provides an infrastructure for general system services and is designed for flexibility to support a spiral development effort.

  3. [X-33 Systems

    NASA Technical Reports Server (NTRS)

    1999-01-01

    Lockheed Martin Skunk Works has compiled an Annual Performance Report of the X-33/RLV Program. This report consists of individual reports from all industry team members, as well as NASA team centers. This portion of the report is comprised of a status report of Allied-Signal Aerospace's contribution to the program. The following is a summary of the work reviewed under their portion of the agreement: (1) Communication Systems; (2) Environmental Control Systems- Active Thermal Control System (ATCS), Purge and Vent System, Hydrogen Detection System (HDS), Avionics Bay Inerting System (ABIS), and Flush Air Data System (FADS); (2) Landing Systems; (3) Power Management and Generation Systems; (4) Flight Control Actuation System (FCAS)- Electric Power Control & Distribution System (EPCDS), and Battery Power System (BPS); and (5) Vehicle Management Systems (VMS)- VMS Hardware, VMS Software Development Activities, and System Integration Laboratory (SIL).

  4. Intelligent systems technology infrastructure for integrated systems

    NASA Technical Reports Server (NTRS)

    Lum, Henry, Jr.

    1991-01-01

    Significant advances have occurred during the last decade in intelligent systems technologies (a.k.a. knowledge-based systems, KBS) including research, feasibility demonstrations, and technology implementations in operational environments. Evaluation and simulation data obtained to date in real-time operational environments suggest that cost-effective utilization of intelligent systems technologies can be realized for Automated Rendezvous and Capture applications. The successful implementation of these technologies involve a complex system infrastructure integrating the requirements of transportation, vehicle checkout and health management, and communication systems without compromise to systems reliability and performance. The resources that must be invoked to accomplish these tasks include remote ground operations and control, built-in system fault management and control, and intelligent robotics. To ensure long-term evolution and integration of new validated technologies over the lifetime of the vehicle, system interfaces must also be addressed and integrated into the overall system interface requirements. An approach for defining and evaluating the system infrastructures including the testbed currently being used to support the on-going evaluations for the evolutionary Space Station Freedom Data Management System is presented and discussed. Intelligent system technologies discussed include artificial intelligence (real-time replanning and scheduling), high performance computational elements (parallel processors, photonic processors, and neural networks), real-time fault management and control, and system software development tools for rapid prototyping capabilities.

  5. Freedom System Text and Graphics System (TAGS)

    NASA Technical Reports Server (NTRS)

    1989-01-01

    The Text and Graphics System (TAGS) is a high-resolution facsimile system that scans text or graphics material and converts the analog SCAN data into serial digital data. This video shows the TAGS in operation.

  6. Language as a System of Systems

    ERIC Educational Resources Information Center

    Mulder, J. W. F.; Hervey, S. G. J.

    1975-01-01

    Based on Mulder's previous classification of all semiotic systems designed to describe the system of discrete features in human languages, this article explores a further subclassification of the genus language into species. (CLK)

  7. LCLS XTOD Attenuator System System Concept Report

    SciTech Connect

    Kishiyama, K; Roeben, M; Trent, J; Ryutov, D; Shen, S

    2006-04-12

    The attenuator system for the Linac Coherent Light Source (LCLS) X-ray Transport, Optics and Diagnostics (XTOD) system has been configured and analyzed by the Lawrence Livermore National Laboratory's New Technologies Engineering Division (NTED) as requested by the SLAC/LCLS program. The system layout, performance analyses and selection of the vacuum components are presented in this System Conceptual Review (SCR) report. Also included are the plans for prototype, procurement, mechanical integration, and the cost estimates.

  8. Stellar systems as dissipative dynamical systems

    SciTech Connect

    Gurzadyan, V.G.; Kocharyan, A.A.

    1987-09-01

    The evolution of a stellar system containing a massive central body is investigated by the methods of the theory of dynamical systems and catastrophe theory. The problem is reduced to the study of a two-dimensional dissipative system - a simple attractor. The presence of stable and unstable singular points (nodes and focuses) and cycles is shown. In the system there may be subcritical and supercritical Hopf bifurcations with a separatrix corresponding to a symmetric butterfly catastrophe of type A..mu..- 5.

  9. Informal Systems Thinking Or Systems Theory

    Microsoft Academic Search

    Matjaz Mulej; Majda Bastic; Janko Belak; Jozica Knez-riedl; Marjan Pivka; Vojko Potocan; Miroslav Rebernik; DUSKO UR?I?; Zdenka Zenko; Nastja Mulej

    2003-01-01

    Systems thinking is the practice of holistic thinking, which can be informal or based on systems theory. Success has always depended on holistic rather than one-sided thinking. Empirical findings about the innovative society can exemplify this statement, though there seems to be no universal agreement as to what the basic attributes of systems thinking are, and we offer a summary

  10. IEEE Systems Conference Panel Systems Engineering of

    E-print Network

    de Weck, Olivier L.

    anticipatory thinking, analysis, and decision making in design of systems 3. Model-based environment to enable Competencies Four Examples 1. Ability to think deeply about systems in their context 2. Situational Leadership trade ­ Understanding context in which decisions are made 3. Enhanced ability to think about `systems

  11. General Systems Theory and Instructional Systems Design.

    ERIC Educational Resources Information Center

    Salisbury, David F.

    1990-01-01

    Describes basic concepts in the field of general systems theory (GST) and identifies commonalities that exist between GST and instructional systems design (ISD). Models and diagrams that depict system elements in ISD are presented, and two matrices that show how GST has been used in ISD literature are included. (11 references) (LRW)

  12. On System Design On System Design

    E-print Network

    Chen, Yiling

    On System Design Jim Waldo #12;On System Design Jim Waldo Perspectives 2006-6 In an Essay Series and Ivan Sutherland have had on my thinking in this area. The subject of the essay, System Design, is one, and seems somehow "unscientific." There are clearly some designs that are good and others that are not

  13. Is Family Systems Theory Really Systemic?

    Microsoft Academic Search

    Harriet Goldhor Lerner

    1988-01-01

    Despite the fact that many systems theorists strive to pay primary attention to the rules of an individual's context, the family literature tends to examine family dysfunction as if it unfolds in isolation from the broader patriarchal system in which the family is embedded. Viewed from this perspective, the author argues that Family Systems Theory is not contextual enough, and

  14. Immune System Based Intrusion Detection System

    Microsoft Academic Search

    Christoph Ehret; Ulrich Ultes-nitsche

    2008-01-01

    The threats and intrusions in IT systems can basically be compared to human diseases with the difference that the human body has an effective way to deal with them, what still need to be designed for IT systems. The human immune system (HIS) can detect and defend against yet unseen intruders, is distributed, adaptive and multilayered to name only a

  15. Requirements engineering for systems of systems

    Microsoft Academic Search

    Grace A. Lewis; Edwin Morris; S. Simanta; D. B. Smith

    2009-01-01

    Traditional requirements engineering for single systems, while remaining a large challenge for engineers, has been extensively researched and many techniques have been proposed and used with varying degree of success. However, many modern systems of systems are being developed to support interaction across multiple controlling authorities and existing techniques are proving to be inadequate for meeting the challenges of requirements

  16. Landscape Management Systems The Visual Management System

    E-print Network

    Standiford, Richard B.

    Landscape Management Systems The Visual Management System of the Forest Service, USDA1 Warren R presentation on how the Visual Management System (VMS) functions. 1/ Presented at the National Conference Manual 2380, Landscape Management, USDA. INTRODUCTION The American people are concerned about the quality

  17. Immune System 101

    MedlinePLUS

    ... Body : Immune System 101 Translate Text Size Print Immune System 101 How does your immune system work? Your immune system works because your body ... tactics to destroy it. Major Players of the Immune System Lymph nodes (also called "lymph glands"): These small, ...

  18. Electronics in weapon systems

    Microsoft Academic Search

    W. Hagenbucher

    1983-01-01

    The use of electronics in weapon systems is described. The electronics policy of the US Ministry of Defense is explained. The computer generated images and digital radar landmass simulation system for cost efficient training is presented. Flight simulation systems are compared. Military computers used as flight aids are presented. A digital photogrammetry system is described. Air control information systems are

  19. Power system commonality study

    Microsoft Academic Search

    Franklin D. Littman

    1992-01-01

    A limited top level study was completed to determine the commonality of power system\\/subsystem concepts within potential lunar and Mars surface power system architectures. A list of power system concepts with high commonality was developed which can be used to synthesize power system architectures which minimize development cost. Examples of potential high commonality power system architectures are given in this

  20. Heliospheric coordinate systems

    Microsoft Academic Search

    M. Fränz; D. Harper

    2002-01-01

    This article gives an overview and reference to the most common coordinate systems currently used in space science. While coordinate systems used in near-Earth space physics have been described in previous work we extend that description to systems used for physical observations of the Sun and the planets and to systems based on spacecraft location. For all systems, we define

  1. Collaborative Systems Testing

    ERIC Educational Resources Information Center

    Pocatilu, Paul; Ciurea, Cristian

    2009-01-01

    Collaborative systems are widely used today in various activity fields. Their complexity is high and the development involves numerous resources and costs. Testing collaborative systems has a very important role for the systems' success. In this paper we present taxonomy of collaborative systems. The collaborative systems are classified in many…

  2. Purge water management system

    Microsoft Academic Search

    J. E. Cardoso-Neto; D. W. Williams

    1995-01-01

    A purge water management system is described for effectively eliminating the production of purge water when obtaining a groundwater sample from a monitoring well. In its preferred embodiment, the purge water management system comprises an expandable container, a transportation system, and a return system. The purge water management system is connected to a wellhead sampling configuration, typically permanently installed at

  3. Purge water management system

    Microsoft Academic Search

    J. E. Cardoso-Neto; D. W. Williams

    1996-01-01

    A purge water management system is described for effectively eliminating the production of purge water when obtaining a groundwater sample from a monitoring well. In its preferred embodiment, the purge water management system comprises an expandable container, a transportation system, and a return system. The purge water management system is connected to a wellhead sampling configuration, typically permanently installed at

  4. Purge water management system

    Microsoft Academic Search

    Joao E. Cardoso-Neto; Daniel W. Williams

    1996-01-01

    A purge water management system for effectively eliminating the production of purge water when obtaining a groundwater sample from a monitoring well. In its preferred embodiment, the purge water management system comprises an expandable container, a transportation system, and a return system. The purge water management system is connected to a wellhead sampling configuration, typically permanently installed at the well

  5. integration division Human Systems

    E-print Network

    future air traffic management (ATM) systems and associated human-system interactions. One of the mainintegration division Human Systems Exploration of Human Systems Integration Issues in Next to understand potential human performance and human- system interactions issues related to NextGen concepts

  6. Complexly Organised Dynamical Systems

    Microsoft Academic Search

    J. D. Collier; C. A. Hooker

    1999-01-01

    Both natural and engineered systems are fundamentally dynamical in nature: their defining properties are ca usal, and their f unctional capacities are ca usally grounded. Among dynamical systems, an interesting and important sub-class are those that are a utonomous, anticipative a nd adaptive (AAA). Living systems, intelligent systems, sophisticated robots and social systems belong to this class, and the use

  7. DDL system: Design systhesis of digital systems

    NASA Technical Reports Server (NTRS)

    Shiva, S. G.

    1983-01-01

    Digital Systems Design Language was integrated into the CADAT system environment of NASA-MSFC. The major technical aspects of this integration are summarized. Automatic hardware synthesis is now possible starting with a high level description of the system to be synthesized. The DDL system provides a high level design verification capability, thereby minimizing design changes in the later stages of the design cycle. An overview of the DDL system covering the translation, simulation and synthesis capabilities is provided. Two companion documents (the user's and programmer's manuals) are to be consulted for detailed discussions.

  8. Autonomic Nervous System Disorders

    MedlinePLUS

    Your autonomic nervous system is the part of your nervous system that controls involuntary actions, such as the beating of your heart ... breathing and swallowing Erectile dysfunction in men Autonomic nervous system disorders can occur alone or as the result ...

  9. Steam System Optimization 

    E-print Network

    Aegerter, R. A.

    1998-01-01

    Most plant steam systems are complex systems. Usually the fuel required to produce the steam represents a major expense for manufacturing facilities. By properly operating and maintaining the steam system and making minor improvements, significant...

  10. Modelling Distributed Systems

    E-print Network

    Yonezawa, Akinori

    1977-06-01

    Distributed systems are multi-processor information processing systems which do not rely on the central shared memory for communication. This paper presents ideas and techniques in modelling distributed systems and ...

  11. Reuse in Systems Engineering

    E-print Network

    Wang, Gan

    Reuse in systems engineering is a frequent but poorly understood phenomenon. Nevertheless, it has a significant impact on system development and on estimating the appropriate amount of systems engineering effort with models ...

  12. Observability of complex systems

    E-print Network

    Liu, Yang-Yu

    A quantitative description of a complex system is inherently limited by our ability to estimate the system’s internal state from experimentally accessible outputs. Although the simultaneous measurement of all internal ...

  13. Steam System Optimization

    E-print Network

    Aegerter, R. A.

    Most plant steam systems are complex systems. Usually the fuel required to produce the steam represents a major expense for manufacturing facilities. By properly operating and maintaining the steam system and making minor improvements, significant...

  14. Integrated Agricultural Systems Workgroup

    Technology Transfer Automated Retrieval System (TEKTRAN)

    The Integrated Agricultural Systems Workgroup is conducting research to developing principles of sustainable integrated agricultural systems. The Integrated Agriculture Systems (IAS) workgroup hosts producer focused workshops to examine crop and animal production practices. At each workshop, several...

  15. systems of linear equations

    NSDL National Science Digital Library

    ExploreMath.com

    2001-01-01

    Solve a system of linear equations by graphing and finding the intersection of the lines of the equations. Create a system of equations, examine its graph, matrix, and table of values, and determine the solution of the system.

  16. Electric flight systems, overview

    NASA Technical Reports Server (NTRS)

    Cronin, M. J.

    1982-01-01

    Materials illustrating a presentation on electric flight systems are presented. Fuel consumption, the power plant assembly, flight control technology, electromechanical actuator systems and components of possible power systems are surveyed.

  17. Unlocking the Endocrine System

    NSDL National Science Digital Library

    2014-09-18

    Students learn how the endocrine system works and compare it to the mail delivery system. Students discuss the importance of communication in human body systems and relate that to engineering and astronauts.

  18. Endocrine System (For Parents)

    MedlinePLUS

    ... to help the body function properly. About the Endocrine System The foundations of the endocrine system are the ... parts of the body. Continue Parts of the Endocrine System The major glands that make up the human ...

  19. The Solar System

    NSDL National Science Digital Library

    Ms. Smithson

    2009-07-07

    Identify basic components of our solar system, including the sun, planets, and Earth's moon. We have just learned about the Solar System. Click here to watch an informational overview of the Solar System: Overview of the Solar System.. The planets in our Solar System are: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune, Pluto. Every planet in our Solar System revolves around the sun. The sun provides the energy ...

  20. Umbra's system representation.

    SciTech Connect

    McDonald, Michael James

    2005-07-01

    This document describes the Umbra System representation. Umbra System representation, initially developed in the spring of 2003, is implemented in Incr/Tcl using concepts borrowed from Carnegie Mellon University's Architecture Description Language (ADL) called Acme. In the spring of 2004 through January 2005, System was converted to Umbra 4, extended slightly, and adopted as the underlying software system for a variety of Umbra applications that support Complex Systems Engineering (CSE) and Complex Adaptive Systems Engineering (CASE). System is now a standard part Of Umbra 4. While Umbra 4 also includes an XML parser for System, the XML parser and Schema are not described in this document.

  1. Systems engineering for very large systems

    NASA Technical Reports Server (NTRS)

    Lewkowicz, Paul E.

    1993-01-01

    Very large integrated systems have always posed special problems for engineers. Whether they are power generation systems, computer networks or space vehicles, whenever there are multiple interfaces, complex technologies or just demanding customers, the challenges are unique. 'Systems engineering' has evolved as a discipline in order to meet these challenges by providing a structured, top-down design and development methodology for the engineer. This paper attempts to define the general class of problems requiring the complete systems engineering treatment and to show how systems engineering can be utilized to improve customer satisfaction and profit ability. Specifically, this work will focus on a design methodology for the largest of systems, not necessarily in terms of physical size, but in terms of complexity and interconnectivity.

  2. System Optimization for Holographic Data Storage Systems

    NASA Astrophysics Data System (ADS)

    Burr, G. W.; Artajona, M. P. Bernal

    A properly-designed holographic data storage system should preserve the data entrusted to it by a user, and return that same data at some later time. System optimization is the process of maximizing the desirable features of the system (how much data can be stored, how fast can it be returned) while maintaining the mandated fidelity (the output data is really the same as the input data).

  3. System of systems modeling and simulation.

    SciTech Connect

    Lawton, Craig R.; Campbell, James E.; Anderson, Dennis James; Thompson, Bruce Miles; Longsine, Dennis E. (Intera, Inc., Austin, TX.); Shirah, Donald N.; Cranwell, Robert M.

    2005-02-01

    Analyzing the performance of a complex System of Systems (SoS) requires a systems engineering approach. Many such SoS exist in the Military domain. Examples include the Army's next generation Future Combat Systems 'Unit of Action' or the Navy's Aircraft Carrier Battle Group. In the case of a Unit of Action, a system of combat vehicles, support vehicles and equipment are organized in an efficient configuration that minimizes logistics footprint while still maintaining the required performance characteristics (e.g., operational availability). In this context, systems engineering means developing a global model of the entire SoS and all component systems and interrelationships. This global model supports analyses that result in an understanding of the interdependencies and emergent behaviors of the SoS. Sandia National Laboratories will present a robust toolset that includes methodologies for developing a SoS model, defining state models and simulating a system of state models over time. This toolset is currently used to perform logistics supportability and performance assessments of the set of Future Combat Systems (FCS) for the U.S. Army's Program Manager Unit of Action.

  4. Linear Systems: Using Algebra

    NSDL National Science Digital Library

    2009-06-14

    Students learn to solve a system of linear equations (2 equations with 2 variables) by substitution and elimination methods. They also review the definitions of consistent (independent and dependent) and inconsistent systems, and associate the number of solutions of a system with them. Detailed instructions guide students in using their graphing calculators to solve the systems of equations.

  5. Battery management system

    Microsoft Academic Search

    Albright

    1993-01-01

    A battery management system is described, comprising: a main battery; main battery charging system means coupled to the main battery for charging the main battery during operation of the main battery charging system means; at least one auxiliary battery; primary switching means for coupling the auxiliary battery to a parallel configuration with the main battery charging system means and with

  6. Introduction to VLSI systems

    Microsoft Academic Search

    Carver Mead; Lynn Conway

    1980-01-01

    The book is written to introduce all Electrical Engineering and Computer Science students to integrated system architecture and design. Combined with individual study in related research areas and participation in large system design projects, this text provides the basis for a graduate course-sequence in integrated systems. MOS devices and circuits are considered along with integrated system fabrication, data and control

  7. Wind driven energy system

    Microsoft Academic Search

    W. E. Currah; G. W. Harper

    1980-01-01

    A system for conversion of wind power to electrical energy is described. The system provides for use during a wide range of wind velocities by use of the following: an external deflection system consisting of baffles and peripheral turbulence creating walls designed to increase the wind velocity and to divert the wind stream to the aperture of the system; a

  8. Traceability in Manufacturing Systems

    Microsoft Academic Search

    M. J. Cheng; J. E. L. Simmons

    1994-01-01

    Proposes that the role of traceability in manufacturing systems is to enable the history of events to be followed and compared with scheduled plans and predefined goals. Tracing techniques can be used to detect system status (status tracing), analyse system performance (performance tracing) and support decision making (goal tracing). Manufacturing systems are conceptualized as having the levels of strategy, planning

  9. Computer Center: CIBE Systems.

    ERIC Educational Resources Information Center

    Crovello, Theodore J.

    1982-01-01

    Differentiates between computer systems and Computers in Biological Education (CIBE) systems (computer system intended for use in biological education). Describes several CIBE stand alone systems: single-user microcomputer; single-user microcomputer/video-disc; multiuser microcomputers; multiuser maxicomputer; and local and long distance computer…

  10. Modular Integrated Energy Systems

    E-print Network

    Oak Ridge National Laboratory

    Honeywell Modular Integrated Energy Systems Task 6 Field Monitoring Interim Report Period Covered 55418 Fax: (612) 951-7438 #12;Modular Integrated Energy Systems Task 6 Field Monitoring Interim Report modular system designs, · Develop a supervisory control system having on-line optimization, · Develop

  11. Modular Integrated Energy Systems

    E-print Network

    Oak Ridge National Laboratory

    Modular Integrated Energy Systems Prepared for: Oak Ridge National Laboratory P.O. Box 2008­December 2004 Honeywell #12;Modular Integrated Energy Systems Task 6 Field Monitoring Interim Report Period: · Develop a set of "reference" CAD-based IES modular system designs, · Develop a supervisory control system

  12. Vehicle Systems Panel deliberations

    Microsoft Academic Search

    Tom Bales; Tom Modlin; Jack Suddreth; Tom Wheeler; Darrel R. Tenney; Ernest O. Bayless; W. Barry Lisagor; Donald A. Bolstad; Harold Croop; J. Dyer

    1993-01-01

    The Vehicle Systems Panel addressed materials and structures technology issues related to launch and space vehicle systems not directly associated with the propulsion or entry systems. The Vehicle Systems Panel was comprised of two subpanels - Expendable Launch Vehicles & Cryotanks (ELVC) and Reusable Vehicles (RV). Tom Bales, LaRC, and Tom Modlin, JSC, chaired the expendable and reusable vehicles subpanels,

  13. Microsphere insulation systems

    NASA Technical Reports Server (NTRS)

    Allen, Mark S. (Inventor); Willen, Gary S. (Inventor); Mohling, Robert A. (Inventor)

    2005-01-01

    A new insulation system is provided that contains microspheres. This insulation system can be used to provide insulated panels and clamshells, and to insulate annular spaces around objects used to transfer, store, or transport cryogens and other temperature-sensitive materials. This insulation system provides better performance with reduced maintenance than current insulation systems.

  14. Noncooperative rendezvous radar system

    NASA Technical Reports Server (NTRS)

    1974-01-01

    A fire control radar system was developed, assembled, and modified. The baseline system and modified angle tracking system are described along with the performance characteristics of the baseline and modified systems. Proposed changes to provide additional techniques for radar evaluation are presented along with flight test data.

  15. Coaches as System Leaders

    ERIC Educational Resources Information Center

    Fullan, Michael; Knight, Jim

    2011-01-01

    The role of school leadership--of principals and coaches--must be played out on a systems level to get widespread and sustainable improvement. Successful, whole-system education reform relies on capacity building, teamwork, pedagogy, and systemic reform. The strategies of good coaches and the right drivers for whole-system reform go hand in hand.…

  16. Broad Bandwidth Telecommunications Systems.

    ERIC Educational Resources Information Center

    Sodolski, John

    Broad bandwidth transmission systems have been around for years. They include microwave, assorted cable systems, and recently, satellites. With the exception of some privately owned systems, broadband services have been furnished by the common carriers. Recently, a new element has been added--Cable Antenna Television (CATV) distribution systems.…

  17. Theory of reliable systems

    NASA Technical Reports Server (NTRS)

    Meyer, J. F.

    1975-01-01

    An attempt was made to refine the current notion of system reliability by identifying and investigating attributes of a system which are important to reliability considerations. Techniques which facilitate analysis of system reliability are included. Special attention was given to fault tolerance, diagnosability, and reconfigurability characteristics of systems.

  18. Unmanned systems and Ada

    Microsoft Academic Search

    Cynthia Cicalese; Joel Sherrill; Ricky E. Sward; Richard Weatherly

    2009-01-01

    This tutorial provides an introduction to the growing field of Unmanned Systems and the role that Ada plays in solving the challenges presented when designing, building, and operating Unmanned Systems. The tutorial begins with an introduction to the fundamentals of ground, air, and maritime Unmanned Systems and the specific challenges of these systems. The authors will demonstrate how they are

  19. The IRIDIUM communications system

    Microsoft Academic Search

    R. J. Leopold; A. Miller

    1993-01-01

    A description is given of the IRIDIUM communication system, so-called because the system design originally consisted of 77 networked satellites, and the element iridium has the atomic number 77. The goal is to make instant global communications a reality. The system design now consists of 60 satellites, a system control facility, gateways, and subscriber units. Each of these components is

  20. Flexible Satellite Systems

    Microsoft Academic Search

    Philip J. Lin; Thomas J. Kostas

    2007-01-01

    In today's unpredictable and dynamic environment, flexibility is an important aspect in system design. Flexibility increases system capability and effectiveness, reduces long term cost, encourages innovation, and protects against uncertainty. It is often at odds with optimization. High cost and harsh environment lead to specialized high performance satellite systems with stringent size, weight, and power constraints. These inflexible systems are

  1. Electronic Document Supply Systems.

    ERIC Educational Resources Information Center

    Cawkell, A. E.

    1991-01-01

    Describes electronic document delivery systems used by libraries and document image processing systems used for business purposes. Topics discussed include technical specifications; analogue read-only laser videodiscs; compact discs and CD-ROM; WORM; facsimile; ADONIS (Article Delivery over Network Information System); DOCDEL; and systems at the…

  2. Medical imaging systems

    SciTech Connect

    Frangioni, John V

    2013-06-25

    A medical imaging system provides simultaneous rendering of visible light and diagnostic or functional images. The system may be portable, and may include adapters for connecting various light sources and cameras in open surgical environments or laparascopic or endoscopic environments. A user interface provides control over the functionality of the integrated imaging system. In one embodiment, the system provides a tool for surgical pathology.

  3. Reuse in Systems Engineering

    Microsoft Academic Search

    Gan Wang; Ricardo Valerdi; Jared Fortune

    2010-01-01

    Reuse in systems engineering is a frequent but poorly understood phenomenon. Nevertheless, it has a significant impact on system development and on estimating the appropriate amount of systems engineering effort with models like the Constructive Systems Engineering Cost Model (COSYSMO). Practical experience showed that the initial version of COSYSMO, based on a “build from the scratch” philosophy, needed to be

  4. Your Endocrine System

    MedlinePLUS

    ... System How the Body Works Main Page Your Endocrine System KidsHealth > Kids > How the Body Works > Your Endocrine System Print A A A Text Size You might ... a pea, is the "master gland" of the endocrine system. It makes and releases a bunch of hormones ...

  5. DATAOVERWRITESECURITY SYSTEM (DOSS)

    E-print Network

    McLaughlin, Richard M.

    results in a latent image on the system's internal hard disk drive. Ricoh's DataOverwriteSecurity SystemRICOH ® DATAOVERWRITESECURITY SYSTEM (DOSS) Hard Disk Data Overwrite Security Solution #12;RICOH DATAOVERWRITESECURITY SYSTEM (DOSS) The Hard Disk Image Overwrite Solution... A Simple, Reliable, Low-cost Option

  6. What is systems engineering?

    SciTech Connect

    Bahill, A.T. [comp.] [Arizona Univ. (United States). Systems and Industrial Engineering

    1995-08-01

    Systems Engineering is an interdisciplinary process that ensures that the customers` needs are satisfied throughout a system`s entire life cycle. This process includes: understanding customer needs; stating the problem; specifying requirements; defining performance and cost measures, prescribing tests, validating requirements, conducting design reviews, exploring alternative concepts, sensitivity analyses, functional decomposition, system design, designing and managing interfaces, system integration, total system test, configuration management, risk management, reliability analysis; total quality management; project management; and documentation. Material for this paper was gathered from senior Systems Engineers at Sandia National Laboratories.

  7. Perspectives on Systems Biology

    Microsoft Academic Search

    Hiroaki Kitano

    2000-01-01

    Systems biology is a new field in biology that aims at system-level understanding of biological systems, such as cells and\\u000a organisms. Molecular biology has already made remarkable contribution to our understanding of biological systems, and its\\u000a current focus is on the identification of genes and the functions of their products; that is, on the components of systems.\\u000a There is no

  8. Solar photovoltaic systems

    NASA Technical Reports Server (NTRS)

    Forney, R. G.

    1978-01-01

    The Department of Energy's photovoltaic program is outlined. The main objective of the program is the development of low cost reliable terrestrial photovoltaic systems. A second objective is to foster widespread use of the system in residential, industrial and commercial application. The system is reviewed by examining each component; silicon solar cell, silicon solar cell modules, advanced development modules and power systems. Cost and applications of the system are discussed.

  9. Photovoltaic systems and applications

    SciTech Connect

    Not Available

    1982-01-01

    Abstracts are given of presentations given at a project review meeting held at Albuquerque, NM. The proceedings cover the past accomplishments and current activities of the Photovoltaic Systems Research, Balance-of-System Technology Development and System Application Experiments Projects at Sandia National Laboratories. The status of intermediate system application experiments and residential system analysis is emphasized. Some discussion of the future of the Photovoltaic Program in general, and the Sandia projects in particular is also presented.

  10. Robotics and expert systems

    SciTech Connect

    Not Available

    1986-01-01

    This volume contains papers presented at ROBEXS' 86, the Second Annual Workshop on Robotics and Expert Systems. Many diverse perspectives on automation problems, and on the merging of robotics and expert systems technology with conventional systems, are contained in this book. The contents include: Integrated Expert Systems Applications; Expert Systems Theory and Applications, Robotics, Intelligent Control, CAD/CAE/CAM, AI Tools, Human Factors, and intelligent Interfaces.

  11. Earth System Modeling

    NASA Astrophysics Data System (ADS)

    Jöckel, Patrick

    Earth system models are important research tools for improving understanding of the climate system and for simulating climate projections. This chapter is devoted to the basic construction principles and challenges of such models, whereas application examples are provided in companion chapters. Since they still do not incorporate the full complexity of the real climate system (and maybe never will), Earth system models nowadays typically focus on specific aspects, for instance on the role of chemically active substances in the climate system.

  12. FNAL system patching design

    SciTech Connect

    Schmidt, Jack; Lilianstrom, Al; Romero, Andy; Dawson, Troy; Sieh, Connie; /Fermilab

    2004-01-01

    FNAL has over 5000 PCs running either Linux or Windows software. Protecting these systems efficiently against the latest vulnerabilities that arise has prompted FNAL to take a more central approach to patching systems. Due to different levels of existing support infrastructures, the patching solution for linux systems differs from that of windows systems. In either case, systems are checked for vulnerabilities by Computer Security using the Nessus tool.

  13. Introduction to Embedded Systems

    Microsoft Academic Search

    Kai Qian; David Haring; Li Cao

    We can easily find embedded systems everywhere in our daily lives. The numbers of embedded systems are rapidly growing especially\\u000a in wireless and web applications. The embedded systems market is one of the fastest growing areas in the world. By name, an\\u000a embedded system is a special-purpose computing device designed to perform dedicated functions. Some of the embedded systems\\u000a with

  14. Intrusion detection system elements

    SciTech Connect

    Eaton, M.J.; Mangan, D.L.

    1980-09-01

    This report highlights elements required for an intrusion detection system and discusses problems which can be encountered in attempting to make the elements effective. Topics discussed include: sensors, both for exterior detection and interior detection; alarm assessment systems, with the discussion focused on video assessment; and alarm reporting systems, including alarm communication systems and dislay/console considerations. Guidance on careful planning and design of a new or to-be-improved system is presented.

  15. Brain Slice Chamber System

    E-print Network

    Kleinfeld, David

    Brain Slice Chamber System User's Manual BSC-BU Brain Slice Chamber System Base Unit MA1 65-0073 BSC-ZT Brain Slice Chamber System Zbicz Top MA1 65-0074 BSC-HT Brain Slice Chamber System Haas Top MA1 65-0075 BSC-PC Brain Slice Chamber System Prechamber MA1 65-0076 BSC-BUW Brain Slice Chamber Base

  16. System Design Conceptual Model

    Microsoft Academic Search

    Kari Tiensyrjä; Jean Mermet

    This chapter presents the foundations of the System Design Conceptual Model (SDCM). The SDCM is a meta-model that serves as\\u000a a reference model of, and gives a global view and perspective on system design. The SDCM is used to describe system design\\u000a from the viewpoints of the System Design Process (SDP) and the System Under Design (SUD). The SDP and

  17. On evolutionary systems.

    PubMed

    Alvarez de Lorenzana, J M; Ward, L M

    1987-01-01

    This paper develops a metatheoretical framework for understanding evolutionary systems (systems that develop in ways that increase their own variety). The framework addresses shortcomings seen in other popular systems theories. It concerns both living and nonliving systems, and proposes a metahierarchy of hierarchical systems. Thus, it potentially addresses systems at all descriptive levels. We restrict our definition of system to that of a core system whose parts have a different ontological status than the system, and characterize the core system in terms of five global properties: minimal length interval, minimal time interval, system cycle, total receptive capacity, and system potential. We propose two principles through the interaction of which evolutionary systems develop. The Principle of Combinatorial Expansion describes how a core system realizes its developmental potential through a process of progressive differentiation of the single primal state up to a limit stage. The Principle of Generative Condensation describes how the components of the last stage of combinatorial expansion condense and become the environment for and components of new, enriched systems. The early evolution of the Universe after the "big bang" is discussed in light of these ideas as an example of the application of the framework. PMID:3689299

  18. Selforganizing Systems Case Study: peertopeer systems ?

    E-print Network

    Roy, Matthieu

    variants as self­configuration, self­healing or reconfiguration was studied in [19] or [18]. The former work proposes the concepts of self­healing and self­configuration in wireless networks, whileSelf­organizing Systems Case Study: peer­to­peer systems ? Emmanuelle Anceaume, Maria Gradinariu

  19. Advanced information processing system: Local system services

    NASA Technical Reports Server (NTRS)

    Burkhardt, Laura; Alger, Linda; Whittredge, Roy; Stasiowski, Peter

    1989-01-01

    The Advanced Information Processing System (AIPS) is a multi-computer architecture composed of hardware and software building blocks that can be configured to meet a broad range of application requirements. The hardware building blocks are fault-tolerant, general-purpose computers, fault-and damage-tolerant networks (both computer and input/output), and interfaces between the networks and the computers. The software building blocks are the major software functions: local system services, input/output, system services, inter-computer system services, and the system manager. The foundation of the local system services is an operating system with the functions required for a traditional real-time multi-tasking computer, such as task scheduling, inter-task communication, memory management, interrupt handling, and time maintenance. Resting on this foundation are the redundancy management functions necessary in a redundant computer and the status reporting functions required for an operator interface. The functional requirements, functional design and detailed specifications for all the local system services are documented.

  20. Collaborative Design Supporting System for Manufacturing Systems

    NASA Astrophysics Data System (ADS)

    Nakano, Masaru; Sato, Shuichi; Arai, Eiji

    Global competition forces industrial companies to reduce cost and time to develop new manufacturing systems. To achieve this goal, collaborative design projects will be more popular among different companies or divisions. The design knowledge, however, is usually not well organized or archived in a digital form. This paper proposes a design agent system to navigate engineers in the design process of manufacturing systems. The design agents digitally model design processes itself, parameters for each design activity, engineering tools and rational logic rules. The design agents communicate with each other to help manufacturing system designers on distributed sites in the collaborative design processes online. In this paper, the structure, roles, and functions of the design agents are discussed. The proposed design agent system is implemented using JAVA programming language.

  1. System identification for passive linear quantum systems

    E-print Network

    Madalin Guta; Naoki Yamamoto

    2014-08-27

    System identification is a key enabling component for the implementation of quantum technologies, including quantum control. In this paper, we consider the class of passive linear input-output systems, and investigate several basic questions: (1) which parameters can be identified? (2) Given sufficient input-output data, how do we reconstruct system parameters? (3) How can we optimize the estimation precision by preparing appropriate input states and performing measurements on the output? We show that minimal systems can be identified up to a unitary transformation on the modes, and systems satisfying a Hamiltonian connectivity condition called "infecting" are completely identifiable. We propose a frequency domain design based on a Fisher information criterion, for optimizing the estimation precision for coherent input state. As a consequence of the unitarity of the transfer function, we show that the Heisenberg limit with respect to the input energy can be achieved using non-classical input states.

  2. NASA systems engineering handbook

    NASA Astrophysics Data System (ADS)

    Shishko, Robert; Aster, Robert; Chamberlain, Robert G.; McDuffee, Patrick; Pieniazek, Les; Rowell, Tom; Bain, Beth; Cox, Renee I.; Mooz, Harold; Polaski, Lou

    1995-06-01

    This handbook brings the fundamental concepts and techniques of systems engineering to NASA personnel in a way that recognizes the nature of NASA systems and environment. It is intended to accompany formal NASA training courses on systems engineering and project management when appropriate, and is designed to be a top-level overview. The concepts were drawn from NASA field center handbooks, NMI's/NHB's, the work of the NASA-wide Systems Engineering Working Group and the Systems Engineering Process Improvement Task team, several non-NASA textbooks and guides, and material from independent systems engineering courses taught to NASA personnel. Five core chapters cover systems engineering fundamentals, the NASA Project Cycle, management issues in systems engineering, systems analysis and modeling, and specialty engineering integration. It is not intended as a directive.

  3. Rover waste assay system

    SciTech Connect

    Akers, D.W.; Stoots, C.M.; Kraft, N.C.; Marts, D.J. [Idaho National Engineering Lab., Idaho Falls, ID (United States)

    1997-11-01

    The Rover Waste Assay System (RWAS) is a nondestructive assay system designed for the rapid assay of highly-enriched {sup 235}U contaminated piping, tank sections, and debris from the Rover nuclear rocket fuel processing facility at the Idaho Chemical Processing Plant. A scanning system translates a NaI(Tl) detector/collimator system over the structural components where both relative and calibrated measurements for {sup 137}Cs are made. Uranium-235 concentrations are in operation and is sufficiently automated that most functions are performed by the computer system. These functions include system calibration, problem identification, collimator control, data analysis, and reporting. Calibration of the system was done through a combination of measurements on calibration standards and benchmarked modeling. A description of the system is presented along with the methods and uncertainties associated with the calibration and analysis of the system for components from the Rover facility. 4 refs., 2 figs., 4 tabs.

  4. NASA Systems Engineering Handbook

    NASA Technical Reports Server (NTRS)

    Shishko, Robert; Aster, Robert; Chamberlain, Robert G.; Mcduffee, Patrick; Pieniazek, Les; Rowell, Tom; Bain, Beth; Cox, Renee I.; Mooz, Harold; Polaski, Lou

    1995-01-01

    This handbook brings the fundamental concepts and techniques of systems engineering to NASA personnel in a way that recognizes the nature of NASA systems and environment. It is intended to accompany formal NASA training courses on systems engineering and project management when appropriate, and is designed to be a top-level overview. The concepts were drawn from NASA field center handbooks, NMI's/NHB's, the work of the NASA-wide Systems Engineering Working Group and the Systems Engineering Process Improvement Task team, several non-NASA textbooks and guides, and material from independent systems engineering courses taught to NASA personnel. Five core chapters cover systems engineering fundamentals, the NASA Project Cycle, management issues in systems engineering, systems analysis and modeling, and specialty engineering integration. It is not intended as a directive. Superseded by: NASA/SP-2007-6105 Rev 1 (20080008301).

  5. March 23, 2008 Databases: Information Systems 1 Information Systems

    E-print Network

    Adam, Salah

    systems, planning new systems, and planning integration of existing systems Classification of IS can.g. Manufacturing IS, accounting IS Support provided by the system: E.g. Transaction Processing system, decision: Decision support systems. 1980s: Executive information systems. Expert Systems. 1990s: Integration

  6. Computer Based Systems Engineering Workshop

    Microsoft Academic Search

    Jonah Z. Lavi; Ashok K. Agrawala; Raymond J. A. Buhr; Ken Jackson; Michael Jackson; Bernard Lang

    1991-01-01

    Modern computer based systems are complex multi-systems consisting of many connected individual subsystems; each one of them is typically also a multicomputer system. The subsystems in a multi-system can be either geographically distributed or locally connected systems. Typical examples of computer based systems are medical systems, process control systems, communications systems, weapon systems and large information systems.\\u000a The development of

  7. Airborne oceanographic lidar system

    NASA Technical Reports Server (NTRS)

    1975-01-01

    Specifications and preliminary design of an Airborne Oceanographic Lidar (AOL) system, which is to be constructed for installation and used on a NASA Wallops Flight Center (WFC) C-54 research aircraft, are reported. The AOL system is to provide an airborne facility for use by various government agencies to demonstrate the utility and practicality of hardware of this type in the wide area collection of oceanographic data on an operational basis. System measurement and performance requirements are presented, followed by a description of the conceptual system approach and the considerations attendant to its development. System performance calculations are addressed, and the system specifications and preliminary design are presented and discussed.

  8. Education Systemic Change Tools

    NSDL National Science Digital Library

    The National School Boards Association provides this website as a guide to systemic change for those in the field of education. This site is broken up into three sections that explain what systemic change is, outline the process for systemic change, offer advice for difficulties along the way, and list resources for implementing systemic change in any educational organization â??from the classroom to the federal level," including the section "Leading Systemic Change" for those who would like to take charge and put systemic change in their own hands.

  9. Verification of Adaptive Systems

    SciTech Connect

    Pullum, Laura L [ORNL] [ORNL; Cui, Xiaohui [New York Institute of Technology (NYIT)] [New York Institute of Technology (NYIT); Vassev, Emil [Lero – The Irish Software Engineering Research Centre] [Lero – The Irish Software Engineering Research Centre; Hinchey, Mike [Lero – The Irish Software Engineering Research Centre] [Lero – The Irish Software Engineering Research Centre; Rouff, Christopher [Lockheed Martin Corporation] [Lockheed Martin Corporation; Buskens, Richard [Lockheed Martin Corporation] [Lockheed Martin Corporation

    2012-01-01

    Adaptive systems are critical for future space and other unmanned and intelligent systems. Verification of these systems is also critical for their use in systems with potential harm to human life or with large financial investments. Due to their nondeterministic nature and extremely large state space, current methods for verification of software systems are not adequate to provide a high level of assurance for them. The combination of stabilization science, high performance computing simulations, compositional verification and traditional verification techniques, plus operational monitors, provides a complete approach to verification and deployment of adaptive systems that has not been used before. This paper gives an overview of this approach.

  10. The BELLE DAQ system

    NASA Astrophysics Data System (ADS)

    Suzuki, Soh Yamagata; Yamauchi, Masanori; Nakao, Mikihiko; Itoh, Ryosuke; Fujii, Hirofumi

    2000-10-01

    We built a data acquisition system for the BELLE experiment. The system was designed to cope with the average trigger rate up to 500 Hz at the typical event size of 30 kB. This system has five components: (1) the readout sequence controller, (2) the FASTBUS-TDC readout systems using charge-to-time conversion, (3) the barrel shifter event builder, (4) the parallel online computing farm, and (5) the data transfer system to the mass storage. This system has been in operation for physics data taking since June 1999 without serious problems.

  11. Continuous system modeling

    NASA Technical Reports Server (NTRS)

    Cellier, Francois E.

    1991-01-01

    A comprehensive and systematic introduction is presented for the concepts associated with 'modeling', involving the transition from a physical system down to an abstract description of that system in the form of a set of differential and/or difference equations, and basing its treatment of modeling on the mathematics of dynamical systems. Attention is given to the principles of passive electrical circuit modeling, planar mechanical systems modeling, hierarchical modular modeling of continuous systems, and bond-graph modeling. Also discussed are modeling in equilibrium thermodynamics, population dynamics, and system dynamics, inductive reasoning, artificial neural networks, and automated model synthesis.

  12. MLS: Airplane system modeling

    NASA Technical Reports Server (NTRS)

    Thompson, A. D.; Stapleton, B. P.; Walen, D. B.; Rieder, P. F.; Moss, D. G.

    1981-01-01

    Analysis, modeling, and simulations were conducted as part of a multiyear investigation of the more important airplane-system-related items of the microwave landing system (MLS). Particular emphasis was placed upon the airplane RF system, including the antenna radiation distribution, the cabling options from the antenna to the receiver, and the overall impact of the airborne system gains and losses upon the direct-path signal structure. In addition, effort was expended toward determining the impact of the MLS upon the airplane flight management system and developing the initial stages of a fast-time MLS automatic control system simulation model. Results ot these studies are presented.

  13. Modeling Power Systems as Complex Adaptive Systems

    SciTech Connect

    Chassin, David P.; Malard, Joel M.; Posse, Christian; Gangopadhyaya, Asim; Lu, Ning; Katipamula, Srinivas; Mallow, J V.

    2004-12-30

    Physical analogs have shown considerable promise for understanding the behavior of complex adaptive systems, including macroeconomics, biological systems, social networks, and electric power markets. Many of today's most challenging technical and policy questions can be reduced to a distributed economic control problem. Indeed, economically based control of large-scale systems is founded on the conjecture that the price-based regulation (e.g., auctions, markets) results in an optimal allocation of resources and emergent optimal system control. This report explores the state-of-the-art physical analogs for understanding the behavior of some econophysical systems and deriving stable and robust control strategies for using them. We review and discuss applications of some analytic methods based on a thermodynamic metaphor, according to which the interplay between system entropy and conservation laws gives rise to intuitive and governing global properties of complex systems that cannot be otherwise understood. We apply these methods to the question of how power markets can be expected to behave under a variety of conditions.

  14. THE UNIVERSITY OF SOUTH FLORIDA SYSTEM (USF SYSTEM)

    E-print Network

    Meyers, Steven D.

    THE UNIVERSITY OF SOUTH FLORIDA SYSTEM (USF SYSTEM) STRATEGIC PLAN of South Florida System is a young and emerging system that currently includes and their own detailed strategic plans. The USF System was formed to bring

  15. Central nervous system

    MedlinePLUS

    The central nervous system is composed of the brain and spinal cord. Your brain and spinal cord serve as the main "processing center" for the entire nervous system, and control all the workings of your body.

  16. Liquid Phase Heating Systems 

    E-print Network

    Mordt, E. H.

    1979-01-01

    Temperature Water (HTW) central district heating systems are far superior to steam systems in large, spread out installations such as airports, universities and office complexes. Water, pressurized to keep it in the liquid state, is distributed at 400o...

  17. Ventilation Air Preconditioning Systems 

    E-print Network

    Khattar, M.; Brandemuehl, M. J.

    1996-01-01

    -load conditions pose greater challenges: systems that cycle on and off allow unconditioned air into the building during compressor off-cycles. The Electric Power Research Institute has teamed with manufacturers to develop dual path HVAC systems, with one path...

  18. JT-60 Control System

    SciTech Connect

    Yonekawa, I.; Kawamata, Y.; Totsuka, T.; Akasaka, H.; Sueoka, M.; Kurihara, K.; Kimura, T. [Japan Atomic Energy Research Institute (Japan)

    2002-09-15

    The present status of the JT-60U control system is reported including its original design concept, the progress of the system, and various modifications since the JT-60 upgrade. This control system has features of a functionally distributed and hierarchical structure, using CAMAC interfaces initially, which have been replaced by versatile module Europe (VME)-bus interfaces, and a protective interlock system composed of both software and hard-wired interlock logics. Plant monitoring and control are performed by efficient data communication through CAMAC highways and Ethernet with TCP/IP protocols. Sequential control of plasma discharges is executed by a combination of a remodeled VME-bus system and a timing system. A real-time plasma control system and a human interface system have been continuously modified corresponding to the progress of JT-60U experiments.

  19. Pneumonia - weakened immune system

    MedlinePLUS

    ... fighting off infection because of problems with the immune system. This type of disease is called "pneumonia in ... People whose immune system is not working well are less able to fight off germs. This makes them prone to infections from ...

  20. Immune System and Disorders

    MedlinePLUS

    Your immune system is a complex network of cells, tissues, and organs that work together to defend against germs. It ... t, to find and destroy them. If your immune system cannot do its job, the results can be ...

  1. Our Immune System

    MedlinePLUS

    ... story for children with primary immunodeficiency diseases Our Immune System Our Immune IMMUNE DEFICIENCY FOUNDATION A note from ... who are immune deficient to better understand their immune system. What is a “B-cell,” a “T-cell,” ...

  2. Leasing Residential PV Systems

    SciTech Connect

    Rutberg, Michael; Bouza, Antonio

    2013-11-01

    The article discusses the adoption, consequences and current market status of the leasing of residential photovoltaic systems. It addresses attributed energy savings and market potential of residential system leasing.

  3. Avian respiratory system disorders

    USGS Publications Warehouse

    Olsen, G.H.

    1989-01-01

    Diagnosing and treating respiratory diseases in avian species requires a basic knowledge about the anatomy and physiology of this system in birds. Differences between mammalian and avian respiratory system function, diagnosis, and treatment are highlighted.

  4. Crowd-powered systems

    E-print Network

    Bernstein, Michael Scott

    2012-01-01

    Crowd-powered systems combine computation with human intelligence, drawn from large groups of people connecting and coordinating online. These hybrid systems enable applications and experiences that neither crowds nor ...

  5. System for rapid subtitling

    E-print Network

    Leonard, Sean Joseph

    2005-01-01

    A system for rapid subtitling of audiovisual sequences was developed, and evaluated. This new system resulted in average time-savings of 50% over the previous work in the field. To subtitle a 27-minute English lecture, ...

  6. Stepping Motor Control System

    E-print Network

    Larson, Noble G.

    This paper describes a hardware system designed to facilitate position and velocity control of a group of eight stepping motors using a PDP-11. The system includes motor driver cards and other interface cards in addition ...

  7. Personal Information Systems

    ERIC Educational Resources Information Center

    Burton, Hilary D.

    1973-01-01

    The effects of personal systems on formal library and secondary information services use are analyzed. Conclusions are that personal information systems are not personalized libraries;'' formal library services should concentrate on developing complimentary programs. (9 references) (Author)

  8. System status display evaluation

    NASA Technical Reports Server (NTRS)

    Summers, Leland G.

    1988-01-01

    The System Status Display is an electronic display system which provides the crew with an enhanced capability for monitoring and managing the aircraft systems. A flight simulation in a fixed base cockpit simulator was used to evaluate alternative design concepts for this display system. The alternative concepts included pictorial versus alphanumeric text formats, multifunction versus dedicated controls, and integration of the procedures with the system status information versus paper checklists. Twelve pilots manually flew approach patterns with the different concepts. System malfunctions occurred which required the pilots to respond to the alert by reconfiguring the system. The pictorial display, the multifunction control interfaces collocated with the system display, and the procedures integrated with the status information all had shorter event processing times and lower subjective workloads.

  9. UNIFORM DATA SYSTEM (UDS)

    EPA Science Inventory

    This data collection system collects uniformly-defined information for the major BPHC grant programs. The system yields consistent information on patient characteristics and clinical conditions. The UDS provides data on services, site locations, delivery methods, staffing, client...

  10. Ventilation Air Preconditioning Systems

    E-print Network

    Khattar, M.; Brandemuehl, M. J.

    1996-01-01

    -load conditions pose greater challenges: systems that cycle on and off allow unconditioned air into the building during compressor off-cycles. The Electric Power Research Institute has teamed with manufacturers to develop dual path HVAC systems, with one path...

  11. Imaging system (INEL)

    SciTech Connect

    Partin, J.K.; Lassahn, G.D.; Davidson, J.R.

    1991-10-01

    This progress report gives a brief description of the general automatic target recognition system algorithms developed for this project, and also summarizes the progress in fiscal 1991. An appendix discusses the proposed computer hardware for this system.

  12. Earth System History Announcements

    E-print Network

    Mojzsis, Stephen J.

    altogether in the snakes. · With the exception of the crocodiles, the Reptile circulatory system still hasEarth System History GEOL 1020 [36] Announcements Enter the Mesozoic Age of the dinosaurs November

  13. "SYSTEMS ENGINEERING APPLICATIONS

    E-print Network

    Final: Develop and Assess Integrated Aircraft Carrier Island Concepts and Corresponding Implementation Drivers [`92] 9. System Technology Assessment Resource ("STAR") ['93] 10. "Autonomic" Ship [`93] 11 integrated aircraft carrier island & topside design system concepts capable of meeting future aircraft

  14. Biomedical recording system

    NASA Technical Reports Server (NTRS)

    Vick, H. A.

    1970-01-01

    System collects medical data directly from patients and permanently records and displays several parameters - electrocardiograph, electroencephalograph, heart rate, respiration rate, auscultatory blood pressure, leg circumference changes, body temperature, and time. Components and operation of the system are described.

  15. All Systems Are Go

    NSDL National Science Digital Library

    2007-08-09

    Test your knowledge of the digestive, respiratory, and other human body systems in this interactive game from Kinetic City. Race the clock to put Arnold's organs back into his body one system at a time.

  16. Nonlocality of Accelerated Systems

    E-print Network

    Bahram Mashhoon

    2003-05-11

    The conceptual basis for the nonlocality of accelerated systems is presented. The nonlocal theory of accelerated observers and its consequences are briefly described. Nonlocal field equations are developed for the case of the electrodynamics of linearly accelerated systems.

  17. Double Degenerate Binary Systems

    SciTech Connect

    Yakut, K. [University of Ege, Department of Astronomy and Space Sciences, 35100-Izmir (Turkey)

    2011-09-21

    In this study, angular momentum loss via gravitational radiation in double degenerate binary (DDB)systems (NS + NS, NS + WD, WD + WD, and AM CVn) is studied. Energy loss by gravitational waves has been estimated for each type of systems.

  18. Digestive System Movie

    MedlinePLUS Videos and Cool Tools

    ... Games Kids' Medical Dictionary En Español What Other Kids Are Reading Girls and Puberty Boys and Puberty ... Body Works Main Page Movie: Digestive System KidsHealth > Kids > Movies & More > Movies > Movie: Digestive System Print A ...

  19. Fluids Systems Course

    NSDL National Science Digital Library

    This pdf contains a syllabus for a course on fluids systems as part of the Aerospace Technology Program. Topics include fluid power standards, hydraulic power, pneumatic power, hypergolic and cryogenic flight systems, and hypergolic loading.

  20. Economics of Irrigation Systems 

    E-print Network

    Amosson, Stephen H.; New, Leon; Almas, Lal; Bretz, Fran; Marek, Thomas

    2002-01-11

    Choosing and buying an irrigation system for crop production can be expensive and complex. This publication discusses six common types of irrigation systems used in Texas: conventional furrow; surge flow furrow; mid-elevation ...

  1. Validation of multiprocessor systems

    NASA Technical Reports Server (NTRS)

    Siewiorek, D. P.; Segall, Z.; Kong, T.

    1982-01-01

    Experiments that can be used to validate fault free performance of multiprocessor systems in aerospace systems integrating flight controls and avionics are discussed. Engineering prototypes for two fault tolerant multiprocessors are tested.

  2. Male Reproductive System

    MedlinePLUS

    The male reproductive system, like that of the female, consists of those organs whose function is to produce a new individual, i.e., to accomplish reproduction. This system consists of a pair of testes and a ...

  3. Paradigms for Abstracting Systems.

    ERIC Educational Resources Information Center

    Pinto, Maria; Galvez, Carmen

    1999-01-01

    Discussion of abstracting systems focuses on the paradigm concept and identifies and explains four paradigms: communicational, or information theory; physical, including information retrieval; cognitive, including information processing and artificial intelligence; and systemic, including quality management. Emphasizes multidimensionality and…

  4. Systems in Science

    NSDL National Science Digital Library

    Charles L. Karr

    2003-03-01

    Undergraduate elementary education majors participate in an interdisciplinary course focused on modeling scientific systems. Students' applications of three artificial intelligence concepts used in modeling scientific systems were investigated before and

  5. Scalability of RAID systems 

    E-print Network

    Li, Yan

    2010-01-01

    RAID systems (Redundant Arrays of Inexpensive Disks) have dominated backend storage systems for more than two decades and have grown continuously in size and complexity. Currently they face unprecedented challenges from ...

  6. Scalability of RAID Systems 

    E-print Network

    Li, Yan

    2010-01-01

    RAID systems (Redundant Arrays of Inexpensive Disks) have dominated backend storage systems for more than two decades and have grown continuously in size and complexity. Currently they face unprecedented challenges from ...

  7. Silver recovery system data

    SciTech Connect

    Boulineau, B.

    1991-08-26

    In August of 1990 the Savannah River Site Photography Group began testing on a different type of silver recovery system. This paper describes the baseline study and the different phases of installation and testing of the system.

  8. Enabling Systems Biology Approaches Through Microfabricated Systems

    PubMed Central

    Zhan, Mei; Chingozha, Loice; Lu, Hang

    2014-01-01

    With the experimental tools and knowledge that have accrued from a long history of reductionist biology, we can now start to put the pieces together and begin to understand how biological systems function as an integrated whole. Here, we describe how microfabricated tools have demonstrated promise in addressing experimental challenges in throughput, resolution and sensitivity to support systems-based approaches to biological understanding. PMID:23984862

  9. Systems Concepts Effectively Taught Using Systems Practices

    NSDL National Science Digital Library

    Claudia Ludwig

    2008-07-01

    This article describes two lessons within the authors' education module entitled, Ecological Networks, that successfully teaches introductory systems content to middle and high school students. To catch students' attention when teaching these new concepts, they decided to use a network that was familiar and fun for students--a cell-phone communication network. These lessons can help students move beyond using systems terminology correctly to actually understanding what it means to have a group of interacting parts work together.

  10. Space station power system

    NASA Technical Reports Server (NTRS)

    Baraona, Cosmo R.

    1987-01-01

    The major requirements and guidelines that affect the space station configuration and power system are explained. The evolution of the space station power system from the NASA program development-feasibility phase through the current preliminary design phase is described. Several early station concepts are described and linked to the present concept. Trade study selections of photovoltaic system technologies are described in detail. A summary of present solar dynamic and power management and distribution systems is also given.

  11. Portable Dental System

    NASA Technical Reports Server (NTRS)

    1980-01-01

    Portable dental system provides dental care in isolated communities. System includes a patient's chair and a dentist's stool, an X-ray machine and a power unit, all of which fold into compact packages. A large yellow "pumpkin" is a collapsible compressed air tank. Portable system has been used successfully in South America in out of the way communities with this back-packable system, and in American nursing homes. This product is no longer manufactured.

  12. Visual Alert System

    NASA Technical Reports Server (NTRS)

    1985-01-01

    A visual alert system resulted from circuitry developed by Applied Cybernetics Systems for Langley as part of a space related telemetry system. James Campman, Applied Cybernetics president, left the company and founded Grace Industries, Inc. to manufacture security devices based on the Langley technology. His visual alert system combines visual and audible alerts for hearing impaired people. The company also manufactures an arson detection device called the electronic nose, and is currently researching additional applications of the NASA technology.

  13. Linear system theory

    NASA Technical Reports Server (NTRS)

    Callier, Frank M.; Desoer, Charles A.

    1991-01-01

    The aim of this book is to provide a systematic and rigorous access to the main topics of linear state-space system theory in both the continuous-time case and the discrete-time case; and the I/O description of linear systems. The main thrusts of the work are the analysis of system descriptions and derivations of their properties, LQ-optimal control, state feedback and state estimation, and MIMO unity-feedback systems.

  14. Modular integrated video system

    SciTech Connect

    Gaertner, K.J.; Heaysman, B.; Holt, R.; Sonnier, C.

    1986-01-01

    The Modular Integrated Video System (MIVS) is intended to provide a simple, highly reliable closed circuit television (CCTV) system capable of replacing the IAEA Twin Minolta Film Camera Systems in those safeguards facilities where mains power is readily available, and situations where it is desired to have the CCTV camera separated from the CCTV recording console. This paper describes the MIVS and the Program Plan which is presently being followed for the development, testing, and implementation of the system.

  15. Terminal area surveillance system

    Microsoft Academic Search

    James W. Rogers; Cam J. Tidwell; Arthur D. Little

    1995-01-01

    The terminal area surveillance system (TASS) is a multifunction, ground-based radar system. It is being developed to replace the airport surveillance radars (ASR-7s, 8s and 9s), terminal Doppler weather radars (TDWRs), and low level wind advisory systems (LLWASs) in the 2004 to 2010 time frame. The terminal area surveillance functions that can be met by an e-scan system are depicted.

  16. SSC Cryogenic System

    SciTech Connect

    Brown, D.P.; Louttit, R.I.; Rode, C.; VanderArend, P.C.

    1985-01-01

    The design of the 4.5 K primary cooling system and higher temperature shield cooling systems for the SSC are described. Typical flow diagrams for the magnet piping systems are presented. Estimated heat loads are given. The systems have been designed to accomodate the great distances, 90 km and up, over which the load will be distributed. Provision has been made for cooldown, warmup, quench recovery and magnet replacement, as well as for steady-state operation.

  17. What is Systems Biology?

    PubMed Central

    Breitling, Rainer

    2010-01-01

    Systems biology is increasingly popular, but to many biologists it remains unclear what this new discipline actually encompasses. This brief personal perspective starts by outlining the asthetic qualities that motivate systems biologists, discusses which activities do not belong to the core of systems biology, and finally explores the crucial link with synthetic biology. It concludes by attempting to define systems biology as the research endeavor that aims at providing the scientific foundation for successful synthetic biology. PMID:21423352

  18. Orthogonally Persistent Object Systems

    Microsoft Academic Search

    Malcolm P. Atkinson; Ronald Morrison

    1995-01-01

    Persistent Application Systems (PASs) are of increasing social andeconomic importance. They have the potential to be long-lived,concurrently accessed and consist of large bodies of data andprograms. Typical examples of PASs are CAD\\/CAM systems, officeautomation, CASE tools, software engineering environments andpatient-care support systems in hospitals. Orthogonally persistentobject systems are intended to provide improved support for thedesign, construction, maintenance and operation of...

  19. Introduction Systems Engineering Fundamentals ENGINEERING

    E-print Network

    Rhoads, James

    Introduction Systems Engineering Fundamentals i SYSTEMS ENGINEERING FUNDAMENTALS January 2001;Systems Engineering Fundamentals Introduction ii #12;Introduction Systems Engineering Fundamentals iii ............................................................................................................................................. iv PART 1. INTRODUCTION Chapter 1. Introduction to Systems Engineering Management

  20. PERMIT COMPLIANCE SYSTEM (PCS)

    EPA Science Inventory

    The Permit Compliance System (PCS) is a computerized management information system which contains data on National Pollutant Discharge Elimination System (NPDES) permit-holding facilities. PCS keeps extensive records on more than 65,000 active water-discharge permits on sites loc...

  1. Redundant data management system

    NASA Technical Reports Server (NTRS)

    Hall, J. R.

    1972-01-01

    Redundant data management system solves problem of operating redundant equipment in real time environment where failures are detected, isolated, and switched in simple manner. System consists of quadruply-redundant computer, input/output control units, and data buses. System inherently contains failure detection, isolation, and switching function.

  2. Developing Effective TV Systems.

    ERIC Educational Resources Information Center

    Rankins, Ron P.

    This case study of the planning and organization of an on-campus educational television system, designed as both an instructional and a service oriented resource, includes descriptions of the goals of the system, the equipment purchased, and problems encountered. It was found that a versatile and relatively sophisticated system could be…

  3. Safety Instrumented Systems

    Microsoft Academic Search

    Steve Gillespie; I. Eng

    Summary: In an increasingly multidisciplinary engineering environment, and in the face of ever increasing system complexity, there is a growing need for all engineers and technicians involved in process engineering to be aware of the implications of designing and operating safety-related systems. This includes knowledge of the relevant safety standards. Safety Instrumented Systems play a vital role in providing the

  4. SI System of Measurements

    NSDL National Science Digital Library

    This PDF document is a quick reference for the International System of Units (SI). SI is a "globally accepted standard for measurements in science and for economic trade." SI is also known as the metric system. This sheet explains the fundamentals of this system of measurement and will serve as a useful reference for many science or mathematics classes.

  5. Faculty Assignment Classification System.

    ERIC Educational Resources Information Center

    Whatcom Community Coll., Ferndale, WA.

    This document outlines the point-based faculty assignment classification system in effect at Whatcom Community College (Washington). The purpose of the point system is to provide an equitable and flexible means of compensating faculty members based on a system of assigning quantitative values to tasks. Teaching, which includes classroom…

  6. Hybrid Mechanical Systems

    E-print Network

    Philipp Treutlein; Claudiu Genes; Klemens Hammerer; Martino Poggio; Peter Rabl

    2015-01-06

    We discuss hybrid systems in which a mechanical oscillator is coupled to another (microscopic) quantum system, such as trapped atoms or ions, solid-state spin qubits, or superconducting devices. We summarize and compare different coupling schemes and describe first experimental implementations. Hybrid mechanical systems enable new approaches to quantum control of mechanical objects, precision sensing, and quantum information processing.

  7. Distributed operating systems

    Microsoft Academic Search

    Andrew S. Tanenbaum; Robbert Van Renesse

    1985-01-01

    Distributed operating systems have many aspects in common with centralized ones, but they also differ in certain ways. This paper is intended as an introduction to distributed operating systems, and especially to current university research about them. After a discussion of what constitutes a distributed operating system and how it is distinguished from a computer network, various key design issues

  8. Idaho Explosives Detection System

    Microsoft Academic Search

    Edward L. Reber; Larry G. Blackwood; Andrew J. Edwards; J. Keith Jewell; Kenneth W. Rohde; Edward H. Seabury; Jeffery B. Klinger

    2005-01-01

    The Idaho Explosives Detection System was developed at the Idaho National Laboratory (INL) to respond to threats imposed by delivery trucks potentially carrying explosives into military bases. A full-scale prototype system has been built and is currently undergoing testing. The system consists of two racks, one on each side of a subject vehicle. Each rack includes a neutron generator and

  9. Modular intelligent sensor system

    SciTech Connect

    Fuess, D.A.

    1993-06-17

    This paper describes a sensor system architecture suitable for application in systems intended for battery powered unattended use. The modularity concept addresses the logical interconnects between modules, the electrical interconnects between modules, and a system for the generalization of data to permit modular processing.

  10. NPOx Decontamination System

    SciTech Connect

    Archibald, K.; Demmer, R.; Argyle, M.; Ancho, M.; Hai-Pao, J.

    2002-02-25

    The nitric acid/potassium permanganate/oxalic acid (NPOx) Phase II system is being prepared for remote operation at the Idaho National Engineering and Environmental Laboratory (INEEL). Several tests have been conducted to prepare the system for remote operation. This system performs very well with high decontamination efficiencies and very low quantities of waste generated during decontamination.

  11. Solar System Voyage

    Microsoft Academic Search

    Serge Brunier

    2002-01-01

    In the last few decades, the exploration of our solar system has revealed fascinating details about the worlds that lie beyond our Earth. This lavishly illustrated book invites the reader on a journey through the solar system. After locating our planetary system in the Universe, Brunier describes the Sun and its planets, the large satellites, asteroids, and comets. Photographs and

  12. Traceability for system families

    Microsoft Academic Search

    Detlef Streitferdt

    2001-01-01

    System families are an idea of software reuse in a specific problem domain. Existing methods have little requirements engineering support for system family development. This short paper proposes a requirements metamodel for system family development. Traceability throughout model elements is a necessary precondition for preserving the consistency of the complete family model during development and is a main issue in

  13. Systemic Change in Education.

    ERIC Educational Resources Information Center

    Reigeluth, Charles M., Ed.; Garfinkle, Robert J., Ed.

    This book provides new tools for thinking about and designing the education system. Four sections, each with its own introduction, follow Charles M. Reigeluth's introductory chapter, "Introduction: The Imperative for Systemic Change." Section 1 describes some theoretical frameworks for understanding the "big ideas" of system design. It includes:…

  14. Geostar's system architectures

    NASA Astrophysics Data System (ADS)

    Lepkowski, Ronald J.

    1989-03-01

    Geostar is currently constructing a radiodetermination satellite system to provide position fixes and vehicle surveillance services, and has proposed a digital land mobile satellite service to provide data, facsimile and digitized voice services to low cost mobile users. The different system architectures for these two systems, are reviewed.

  15. Polymerase chain reaction system

    DOEpatents

    Benett, William J.; Richards, James B.; Stratton, Paul L.; Hadley, Dean R.; Milanovich, Fred P.; Belgrader, Phil; Meyer, Peter L.

    2004-03-02

    A portable polymerase chain reaction DNA amplification and detection system includes one or more chamber modules. Each module supports a duplex assay of a biological sample. Each module has two parallel interrogation ports with a linear optical system. The system is capable of being handheld.

  16. Modular Integrated Energy Systems

    E-print Network

    Oak Ridge National Laboratory

    Modular Integrated Energy Systems Prepared for: Oak Ridge National Laboratory P.O. Box 2008­April 2005 Honeywell #12;Modular Integrated Energy Systems Task 6 Field Monitoring Interim Report Period chiller. The key goals of the project are: · Develop a set of "reference" CAD-based IES modular system

  17. System integration report

    NASA Technical Reports Server (NTRS)

    Badler, N. I.; Korein, J. D.; Meyer, C.; Manoochehri, K.; Rovins, J.; Beale, J.; Barr, B.

    1985-01-01

    Several areas that arise from the system integration issue were examined. Intersystem analysis is discussed as it relates to software development, shared data bases and interfaces between TEMPUS and PLAID, shaded graphics rendering systems, object design (BUILD), the TEMPUS animation system, anthropometric lab integration, ongoing TEMPUS support and maintenance, and the impact of UNIX and local workstations on the OSDS environment.

  18. Autoresonant mechatronic systems

    Microsoft Academic Search

    V. I. Babitsky

    1995-01-01

    The conception of a technological machine as an autoresonant homeostat is presented. It is based on the keeping up of a whole mechatronic system behind the boundary of dynamic stability and active matching between oscillating system and loads. As a result the resonant conditions are maintained under deviations of parameters and loads and weak control of the system is realized.

  19. NASA systems engineering handbook

    Microsoft Academic Search

    Robert Shishko; Robert Aster; Robert G. Chamberlain; Patrick McDuffee; Les Pieniazek; Tom Rowell; Beth Bain; Renee I. Cox; Harold Mooz; Lou Polaski

    1995-01-01

    This handbook brings the fundamental concepts and techniques of systems engineering to NASA personnel in a way that recognizes the nature of NASA systems and environment. It is intended to accompany formal NASA training courses on systems engineering and project management when appropriate, and is designed to be a top-level overview. The concepts were drawn from NASA field center handbooks,

  20. Interpretation Intelligent Systems Laboratory

    E-print Network

    Ward, Koren

    1 TENS Text Interpretation Intelligent Systems Laboratory University of Wollongong TENS Text and delivering the text data to the user by electrically stimulating the fingers. Intelligent Systems Laboratory ­ University of Wollongong #12;2 The TENS Unit Intelligent Systems Laboratory ­ University of Wollongong

  1. Speech Communication Systems

    Microsoft Academic Search

    WINSTON E. KOCKt

    1962-01-01

    Telephone, radio broadcasting, public-address and bandwidth conserving systems are discussed with particular attention being given to the latter two. The relation of certain properties of hearing (e.g., the Haas effect) to public address system design is reviewed along with several bandwidth conserving techniques including speech interpolation systems and vocoders.

  2. Energy Systems Laboratory Groundbreaking

    SciTech Connect

    Hill, David; Otter, C.L.; Simpson, Mike; Rogers, J.W.

    2011-01-01

    INL recently broke ground for a research facility that will house research programs for bioenergy, advanced battery systems, and new hybrid energy systems that integrate renewable, fossil and nuclear energy sources. Here's video from the groundbreaking ceremony for INL's new Energy Systems Laboratory. You can learn more about CAES research at http://www.facebook.com/idahonationallaboratory.

  3. COMRADE design administration system

    Microsoft Academic Search

    C. Michael Chernick; Naval Ship

    1973-01-01

    The Design Administration System of COMRADE completes the set of major functions required for integrated design system support. The purpose of the Design Administration (DA) System of COMRADE is • To provide capabilities which allow the manager(s) of a large, computer-aided design effort to control and monitor design activity, and hence, to control and monitor use of their COMRADE subsystem.

  4. Personal Food System Mapping

    ERIC Educational Resources Information Center

    Wilsey, David; Dover, Sally

    2014-01-01

    Personal food system mapping is a practical means to engage community participants and educators in individualized and shared learning about food systems, decisions, and behaviors. Moreover, it is a useful approach for introducing the food system concept, which is somewhat abstract. We developed the approach to capture diversity of personal food…

  5. Designing resilient, sustainable systems.

    PubMed

    Fiksel, Joseph

    2003-12-01

    Pursuit of sustainable development requires a systems approach to the design of industrial product and service systems. Although many business enterprises have adopted sustainability goals, the actual development of sustainable systems remains challenging because of the broad range of economic, environmental and social factors that need to be considered across the system life cycle. Traditional systems engineering practices try to anticipate and resist disruptions but may be vulnerable to unforeseen factors. An alternative is to design systems with inherent "resilience" bytaking advantage of fundamental properties such as diversity, efficiency, adaptability, and cohesion. Previous work on sustainable design has focused largely upon ecological efficiency improvements. For example, companies have found that reducing material and energy intensity and converting wastes into valuable secondary products creates value for shareholders as well as for society at large. To encourage broader systems thinking, a design protocol is presented that involves the following steps: identifying system function and boundaries, establishing requirements, selecting appropriate technologies, developing a system design, evaluating anticipated performance, and devising a practical means for system deployment. The approach encourages explicit consideration of resilience in both engineered systems and the larger systems in which they are embedded. PMID:14700317

  6. Oxidative Tritium Decontamination System

    Microsoft Academic Search

    Charles A. Gentile; John J. Parker; Gregory L. Guttadora; Lloyd P. Ciebiera

    2002-01-01

    The Princeton Plasma Physics Laboratory, Tritium Systems Group has developed and fabricated an Oxidative Tritium Decontamination System (OTDS), which is designed to reduce tritium surface contamination on various components and items. The system is configured to introduce gaseous ozone into a reaction chamber containing tritiated items that require a reduction in tritium surface contamination. Tritium surface contamination (on components and

  7. SPACE SYSTEMS ENGINEERING

    E-print Network

    Yang, Eui-Hyeok

    , the leading educational institute for technical mission analysis and design, and the International Space to design cutting edge space missions, systems and associated products, as well as the systems knowledge0213 SPACE SYSTEMS ENGINEERING In today's space community, change is the only constant. From market

  8. Firefighter's Breathing System

    NASA Technical Reports Server (NTRS)

    Mclaughlan, P. B.; Giorgini, E. A.; Sullivan, J. L.; Simmonds, M. R.; Beck, E. J.

    1976-01-01

    System, based on open-loop demand-type compressed air concept, is lighter and less bulky than former systems, yet still provides thirty minutes of air supply. Comfort, visibility, donning time, and breathing resistance have been improved. Apparatus is simple to recharge and maintain and is comparable in cost to previously available systems.

  9. System Generated Email Notifications

    E-print Network

    Shyy, Wei

    Proposal Management System Generated Email Notifications Last updated: 3/14/2014 1 of 7 http://eresearch.umich.edu System-generated Email Notifications The eResearch Proposal Management system generates email notifications on certain state transitions and upon the completion of certain events/activities. All email

  10. Nationale Roadmap Embedded Systems

    NASA Astrophysics Data System (ADS)

    Damm, Werner; Achatz, Reinhold; Beetz, Klaus; Broy, Manfred; Daembkes, Heinrich; Grimm, Klaus; Liggesmeyer, Peter

    Eingebettete Systeme" sind in ihrem Softwareanteil nicht sichtbar und doch hoch relevant für den Wirtschaftsstandort Deutschland. Ihre Bedeutung fasst die vorliegende Nationale Roadmap Embedded Systems in den folgenden 10 Thesen zusammen: These 1 Die zentralen ökonomischen und gesellschaftlichen Herausforderungen in Deutschland lassen sich ohne die Querschnittstechnologie Embedded Systems nicht lösen1.

  11. Global Energy Management System

    E-print Network

    Eidt, B. D.

    2005-01-01

    , layered stewardship, and structured communications emphasize personal accountability for operating results and system performance. Figure 1. GEMS Design GEMS DEVELOPMENT Early in the development phase, experts from across our global... DESIGN Management Leadership Major Equipment Project Design Process Units Utilities Systems Organizational Commitment System Performance Operating Results Stewardship Personal Accountability Continuous Improvement Mid-way up the pyramid ? Diagnostic...

  12. The CEBAF control system

    Microsoft Academic Search

    William A. Watson

    1995-01-01

    CEBAF has recently upgraded its accelerator control system to use EPICS, a control system toolkit being developed by a collaboration among laboratories in the US and Europe. The migration to EPICS has taken place during a year of intense commissioning activity, with new and old control systems operating concurrently. Existing CAMAC hardware was preserved by adding a CAMAC serial highway

  13. Neural Systems and Computation

    E-print Network

    Zürich, Universität

    Neural Systems and Computation A specialized Masters program in which brain sciences meet? How can we translate insights about neural systems into usable technologies? Faculty of Science #12 and computer science. Goals of the program The MSc in Neural Systems and Computation is an inter- disciplinary

  14. Dynamically reconfigurable robotic system

    Microsoft Academic Search

    Toshio Fukuda; Seiya Nakagawa

    1988-01-01

    The concept of the DRRS (dynamically reconfigurable robotic system) based on a cell structure is proposed for the next generation of robotic systems. The system can reorganize its configuration and its software to a given task, so that its level of flexibility and adaptability is much higher than that of the conventional robots. It consists of a lot of intelligent

  15. Complex systems and valuation

    Microsoft Academic Search

    Karin E. Limburg; Robert V. O'neill; Robert Costanza; Stephen Farber

    2002-01-01

    Ecological and economic systems are undeniably complex. Whereas a goal of delineating ‘ecosystem services’ is to make readily apparent some of the important ways in which ecosystems underpin human welfare, insights are also gained by appreciating the nonlinear dynamic properties of ecosystems. In this paper, we review some of the relevant characteristics of complex systems. Ecosystems and economic systems share

  16. Solving Systems of Equations

    NSDL National Science Digital Library

    Mrs. Ball

    2012-09-13

    Learn how to solve systems of linear equations by graphing, substitution, and elimination. As we discovered in our Pet Sitters Unit, systems of equations are a useful way to model and solve real-world situations in business. They are also useful in science and social science applications. This online unit will help you become an expert at solving systems of linear equations. 1) ...

  17. Beyond Management Information Systems.

    ERIC Educational Resources Information Center

    Clemson, Barry

    1978-01-01

    Management information systems fail because they are based on the assumption that more facts are needed and they overtax computer systems. The alternative proposed here is much smaller (in data banks and dollars) than conventional systems and is designed to aid decision making rather than to build banks of facts. (Author/IRT)

  18. Weapons System Management

    Microsoft Academic Search

    Giles J. Strickroth

    1957-01-01

    A weapons system provides for, and includes, all elements required to perform a desired mission. The scope of a weapons system begins at the conception of an idea and ends with the successful use of the weapon in the field. A wide variety of weapons systems are concurrently in process at Martin. To manage these projects, a somewhat unique organizational

  19. Unified Science - System.

    ERIC Educational Resources Information Center

    Thomson, Barbara S.

    The goals of this curriculum, developed as a summer course for the Young Scholars Program at The Ohio State University-Columbus, are as follows: (1) enable students to develop an understanding of the concept of a system; (2) help students gain an appreciation of the value of systems; (3) develop skills in working with systems; (4) expand skills in…

  20. Medical Information Systems.

    ERIC Educational Resources Information Center

    Smith, Kent A.

    1986-01-01

    Description of information services from the National Library of Medicine (NLM) highlights a new system for retrieving information from NLM's databases (GRATEFUL MED); a formal Regional Medical Library Network; DOCLINE; the Unified Medical Language System; and Integrated Academic Information Management Systems. Research and development and the…

  1. A unified systems hypothesis

    Microsoft Academic Search

    Derek K. Hitchins

    1993-01-01

    There is, at present, no single theory around which systems thinkers of the hard and soft schools might reasonably unite. Viewpoints and methods they invoke tend, even today, to be either hard or soft. There are many potential advantages of a single theory, particularly where systems consist of quite varied parts, such as sociotechnical systems. The advent particularly of chaos

  2. A Miniature Turbocompressor System

    Microsoft Academic Search

    C. Zwyssig; D. Krähenbühl; H. Weser; J. W. Kolar

    The trend in compressors for fuel cells, heat pumps, aerospace and automotive air pressurization, heating, ventilation and air conditioning systems, is towards ultra-compact size and high efficiency. This can be achieved by increasing the rotational speed and employing new electrical drive system technology and materials. This paper presents a miniature, electrically driven turbocompressor system running at a speed of 500

  3. A imaginary number system

    Microsoft Academic Search

    Donald E. Knuth

    1960-01-01

    For centuries the decimal number system reigned supreme, except, perhaps, among the Mayan Indians, until the advent of digital computers brought the binary and octal systems into the limelight. This paper introduces another number system which may prove useful for manipulating complex numbers on machines.

  4. Training Management Information System

    Microsoft Academic Search

    Rackley

    1989-01-01

    The Training Management Information System (TMIS) is an integrated information system for all training related activities. TMIS is at the leading edge of training information systems used in the nuclear industry. The database contains all the necessary records to confirm the department's adherence to accreditation criteria and houses all test questions, student records and information needed to evaluate the training

  5. Systems Thinking 1: Introduction

    NSDL National Science Digital Library

    Linda Vanasupa

    Introduction to the concept of a dynamic system. Includes discussion of system and surroundings and system boundaries. This video is part of the Sustainability Learning Suites, made possible in part by a grant from the National Science Foundation. See 'Learn more about this resource' for Learning Objectives, Assessment, and Activities.

  6. Memory Systems Doug Burger

    E-print Network

    Burger, Doug

    Memory Systems Doug Burger University of Wisconsin-Madison A computer's memory system and produces. A perfect memory system is one that can supply immediately any datum that the CPU requests. This ideal memory is not practically implementable, however, as the three factors of memory capacity, speed

  7. Intelligent Hub Access System

    Microsoft Academic Search

    S. Thompson

    2000-01-01

    A means for high capacity communication between commanders and soldiers in the field is required. The system should be low cost, rapidly deployable, compact, and provide the ability to transmit and receive high resolution video, video-teleconference (VTC), digital maps and command and control information. A system called the Intelligent Hub Access System (IHAS) is described to suit this requirement. The

  8. FUNDAMENTALS OF TELEVISION SYSTEMS.

    ERIC Educational Resources Information Center

    KESSLER, WILLIAM J.

    DESIGNED FOR A READER WITHOUT SPECIAL TECHNICAL KNOWLEDGE, THIS ILLUSTRATED RESOURCE PAPER EXPLAINS THE COMPONENTS OF A TELEVISION SYSTEM AND RELATES THEM TO THE COMPLETE SYSTEM. SUBJECTS DISCUSSED ARE THE FOLLOWING--STUDIO ORGANIZATION AND COMPATIBLE COLOR TELEVISION PRINCIPLES, WIRED AND RADIO TRANSMISSION SYSTEMS, DIRECT VIEW AND PROJECTION…

  9. Workshop on systems failures

    Microsoft Academic Search

    John Donaldson; John Jenkins

    2001-01-01

    Systems failures cause havoc everywhere. Failures may be total, partial or temporary; and examination of the subject has to consider: implemented systems, systems being enhanced and totally new projects. When failing situations arise, the aftermath is highly complicated because there are so many possible contributing factors. For many years, students of Computer Science and Software Engineering - and indeed software

  10. LCLS Undulator Coordinate System

    SciTech Connect

    Bong, E.

    2005-01-31

    This note defines the LCLS undulator coordinate system and relates that coordinate system to the linear accelerator coordinate system. The slight downward pitch of the SLAC linac and the finite radius of the Earth necessitate some choices and definitions for the undulator layout which is described here. The layout described is consistent with the LCLS optics MAD file ''LCLS13APR04''.

  11. Systems of social exchange

    Microsoft Academic Search

    James S. Coleman

    1972-01-01

    This paper develops a formal model for exchange within a system of action. The system of action is defined by actors, events, control of actors over events, and interests of actors in the outcomes of events. The system is designed to deal with divisible events (best exemplified by private goods) or indivisible events (such as a bill on which a

  12. IDC System Specification Document.

    SciTech Connect

    Clifford, David J.

    2014-12-01

    This document contains the system specifications derived to satisfy the system requirements found in the IDC System Requirements Document for the IDC Reengineering Phase 2 project. Revisions Version Date Author/Team Revision Description Authorized by V1.0 12/2014 IDC Reengineering Project Team Initial delivery M. Harris

  13. Thermochemical energy storage systems

    Microsoft Academic Search

    E. W. Schmidt; P. A. Lowe

    1976-01-01

    A thermochemical energy storage system is based on a reversible chemical reaction which consumes heat when proceeding in one direction and releases heat when proceeding in the opposite direction. The paper presents an overview of chemical reactions which can be used in a thermochemical energy storage (CES) system. Selection criteria for candidate CES systems are presented. Emphasis is on thermal

  14. Fermionic systems Vieri Mastropietro

    E-print Network

    Roma "La Sapienza", Università di

    and this provides us with a natural example of a fermionic system; the Hamiltonian can be taken as HN = N X i=1. Second Quantization formalism The Hilbert space of states of a system of N > 1 fermions is the space HNFermionic systems Vieri Mastropietro Dipartimento di Matematica, Universit#18;a di Roma \\Tor

  15. Plane waves Lumped systems

    E-print Network

    Berlin,Technische Universität

    1 Impedance · Plane waves ­ Lumped systems S x y z Impedance · Plane waves ­ Lumped systems · open tube #12;2 Impedance · Plane waves ­ Lumped systems · closed tube Impedance · Cylindrical waves z x y r;9 Impedance · Spherical waves ­ Spherical Hankel functions hn (2)(kr)=jn(kr)-iyn(kr) #12;

  16. Umbilical connect systems.

    NASA Technical Reports Server (NTRS)

    Valkema, D.

    1972-01-01

    Umbilical connect systems were studied for the purpose of developing techniques, specifications, and hardware design concepts for prototype systems to be used in the space shuttle program. New techniques are described which permit rapid and reliable mating, connection, and checkout of umbilical carrier assemblies and couplings for vehicle services (cryogenic, electrical, pneumatic, and hydraulic systems).

  17. Automotive energy management system

    SciTech Connect

    Shiber, S.

    1980-09-23

    A hydromechanical/hydrostatic automotive energy management system is described that is comprised of two hydraulic units, the system adapted to provide: an efficient, continuously variable optimal transmission ratio, an intermittent optimal engine operation in city traffic and regenerative braking, thereby, the system is able to reduce a car's fuel consumption by as much as one half while improving drivability.

  18. Smart vehicular transportation systems

    SciTech Connect

    Little, C.Q.; Wilson, C.W.

    1997-05-01

    This work builds upon established Sandia intelligent systems technology to develop a unique approach for the integration of intelligent system control into the US Highway and urban transportation systems. The Sandia developed concept of the COPILOT controller integrates a human driver with computer control to increase human performance while reducing reliance on detailed driver attention. This research extends Sandia expertise in sensor based, real-time control of robotics systems to high speed transportation systems. Knowledge in the form of maps and performance characteristics of vehicles provides the automatic decision making intelligence needed to plan optimum routes, maintain safe driving speeds and distances, avoid collisions, and conserve fuel.

  19. Nuclear propulsion systems engineering

    NASA Astrophysics Data System (ADS)

    Madsen, W. W.; Neuman, J. E.; Vanhaften, D. H.

    1992-10-01

    The Nuclear Energy for Rocket Vehicle Application (NERVA) program of the 1960's and early 1970's was dramatically successful, with no major failures during the entire testing program. This success was due in large part to the successful development of a systems engineering process. Systems engineering, properly implemented, involves all aspects of the system design and operation, and leads to optimization of the entire system: cost, schedule, performance, safety, reliability, function, requirements, etc. The process must be incorporated from the very first and continued to project completion. This paper will discuss major aspects of the NERVA systems engineering effort and consider the implications for current nuclear propulsion efforts.

  20. Intelligent Car System

    E-print Network

    Siddique, Qasim

    2012-01-01

    In modern life the road safety has becomes the core issue. One single move of a driver can cause horrifying accident. The main goal of intelligent car system is to make communication with other cars on the road. The system is able to control to speed, direction and the distance between the cars the intelligent car system is able to recognize traffic light and is able to take decision according to it. This paper presents a framework of the intelligent car system. I validate several aspect of our system using simulation.

  1. Text Exchange System

    NASA Technical Reports Server (NTRS)

    Snyder, W. V.; Hanson, R. J.

    1986-01-01

    Text Exchange System (TES) exchanges and maintains organized textual information including source code, documentation, data, and listings. System consists of two computer programs and definition of format for information storage. Comprehensive program used to create, read, and maintain TES files. TES developed to meet three goals: First, easy and efficient exchange of programs and other textual data between similar and dissimilar computer systems via magnetic tape. Second, provide transportable management system for textual information. Third, provide common user interface, over wide variety of computing systems, for all activities associated with text exchange.

  2. Medical Imaging System

    NASA Technical Reports Server (NTRS)

    1991-01-01

    The MD Image System, a true-color image processing system that serves as a diagnostic aid and tool for storage and distribution of images, was developed by Medical Image Management Systems, Huntsville, AL, as a "spinoff from a spinoff." The original spinoff, Geostar 8800, developed by Crystal Image Technologies, Huntsville, incorporates advanced UNIX versions of ELAS (developed by NASA's Earth Resources Laboratory for analysis of Landsat images) for general purpose image processing. The MD Image System is an application of this technology to a medical system that aids in the diagnosis of cancer, and can accept, store and analyze images from other sources such as Magnetic Resonance Imaging.

  3. FRIB cryogenic distribution system

    NASA Astrophysics Data System (ADS)

    Ganni, V.; Dixon, K.; Laverdure, N.; Knudsen, P.; Arenius, D.; Barrios, M.; Jones, S.; Johnson, M.; Casagrande, F.

    2014-01-01

    The Michigan State University Facility for Rare Isotope Beams (MSU-FRIB) helium distribution system has been revised to include bayonet/warm valve type disconnects between each cryomodule and the transfer line distribution system, similar to the Thomas Jefferson National Accelerator Facility (JLab) and the Spallation Neutron Source (SNS) cryogenic distribution systems. The heat loads at various temperature levels and some of the features in the design of the distribution system are outlined. The present status, the plans for fabrication, and the procurement approach for the helium distribution system are also included.

  4. FRIB cryogenic distribution system

    SciTech Connect

    Ganni, V.; Dixon, K.; Laverdure, N.; Knudsen, P.; Arenius, D. [Thomas Jefferson National Accelerator Facility (JLab), Newport News, VA 23606 (United States); Barrios, M.; Jones, S.; Johnson, M.; Casagrande, F. [Facility for Rare Isotope Beams (FRIB), Michigan State University, East Lansing, MI 48824 (United States)

    2014-01-29

    The Michigan State University Facility for Rare Isotope Beams (MSU-FRIB) helium distribution system has been revised to include bayonet/warm valve type disconnects between each cryomodule and the transfer line distribution system, similar to the Thomas Jefferson National Accelerator Facility (JLab) and the Spallation Neutron Source (SNS) cryogenic distribution systems. The heat loads at various temperature levels and some of the features in the design of the distribution system are outlined. The present status, the plans for fabrication, and the procurement approach for the helium distribution system are also included.

  5. Systems Biology of Embryogenesis

    PubMed Central

    Edelman, Lucas B.; Chandrasekaran, Sriram; Price, Nathan D.

    2010-01-01

    The development of a complete organism from a single cell involves extraordinarily complex orchestration of biological processes that vary intricately across space and time. Systems biology seeks to describe how all elements of a biological system interact in order to understand, model, and ultimately predict aspects of emergent biological processes. Embryogenesis represents an extraordinary opportunity – and challenge – for the application of systems biology. Systems approaches have already been used successfully to study various aspects of development, from complex intracellular networks to 4D models of organogenesis. Going forward, great advancements and discoveries can be expected from systems approaches applied to embryogenesis and developmental biology. PMID:20003850

  6. Space engine safety system

    NASA Technical Reports Server (NTRS)

    Maul, William A.; Meyer, Claudia M.

    1991-01-01

    A rocket engine safety system is designed to initiate control procedures which will minimize damage to the engine and vehicle or test stand in the event of an engine failure. This report describes the features and the implementation issues associated with rocket engine safety systems. Specific concerns of safety systems applied to a space-based engine and long duration space missions are discussed. Examples of safety system features and architectures are given from recent safety monitoring investigations conducted for the Space Shuttle Main Engine and for future liquid rocket engines. Also, a general design and implementation process for rocket engine safety systems is presented.

  7. Electric system restructuring and system reliability

    NASA Astrophysics Data System (ADS)

    Horiuchi, Catherine Miller

    In 1996 the California legislature passed AB 1890, explicitly defining economic benefits and detailing specific mechanisms for initiating a partial restructuring the state's electric system. Critics have since sought re-regulation and proponents have asked for patience as the new institutions and markets take shape. Other states' electric system restructuring activities have been tempered by real and perceived problems in the California model. This study examines the reduced regulatory controls and new constraints introduced in California's limited restructuring model using utility and regulatory agency records from the 1990's to investigate effects of new institutions and practices on system reliability for the state's five largest public and private utilities. Logit and negative binomial regressions indicate negative impact from the California model of restructuring on system reliability as measured by customer interruptions. Time series analysis of outage data could not predict the wholesale power market collapse and the subsequent rolling blackouts in early 2001; inclusion of near-outage reliability disturbances---load shedding and energy emergencies---provided a measure of forewarning. Analysis of system disruptions, generation capacity and demand, and the role of purchased power challenge conventional wisdom on the causality of Californian's power problems. The quantitative analysis was supplemented by a targeted survey of electric system restructuring participants. Findings suggest each utility and the organization controlling the state's electric grid provided protection from power outages comparable to pre-restructuring operations through 2000; however, this reliability has come at an inflated cost, resulting in reduced system purchases and decreased marginal protection. The historic margin of operating safety has fully eroded, increasing mandatory load shedding and emergency declarations for voluntary and mandatory conservation. Proposed remedies focused on state-funded contracts and government-managed power authorities may not help, as the findings suggest pricing models, market uncertainty, interjurisdictional conflict and an inability to respond to market perturbations are more significant contributors to reduced regional generation availability than the particular contract mechanisms and funding sources used for power purchases.

  8. Man-systems distributed system for Space Station Freedom

    NASA Technical Reports Server (NTRS)

    Lewis, J. L.

    1990-01-01

    Viewgraphs on man-systems distributed system for Space Station Freedom are presented. Topics addressed include: description of man-systems (definition, requirements, scope, subsystems, and topologies); implementation (approach, tools); man-systems interfaces (system to element and system to system); prime/supporting development relationship; selected accomplishments; and technical challenges.

  9. Total systems intervention: A practical face to critical systems thinking

    Microsoft Academic Search

    R. L. Flood; M. C. Jackson

    1991-01-01

    This is the first exposition of a new methodology (or perhaps meta-methodology) for systems practice known as Total Systems Intervention (TSI). Designed to overcome the weaknesses of hard, cybernetic, and soft systems approaches and build on their strengths, TSI represents a practical face of critical systems thinking. It advocates combining three building blocks-systems metaphors, “system of systems methodologies,” and individual

  10. Sensitivity Analysis Method for System Operational Effectiveness in Complex Systems

    Microsoft Academic Search

    Ozge Doguc; Onur Kardes

    2009-01-01

    System Operational Effectiveness (SOE) is defined as a generic measure for holistic system evaluation, considering system elements such as system performance, availability, process efficiency, and cost. As complexity of the systems increase, SOE assessment becomes a more important and complicated task. To improve the SOE, sensitivity analysis helps the systems engineers to understand interactions between the system elements and identify

  11. Towards a Systemic Approach to Autonomic Systems Engineering

    Microsoft Academic Search

    David W. Bustard; Roy Sterritt; A. Taleb-bendiab; Andrew Laws; Martin Randles; Frank Keenan

    2005-01-01

    An autonomic system is structured as a network of autonomic elements that collaborate to achieve the system's purpose. This paper examines the potential benefit of using well-established systems concepts and techniques in the development of such systems. In particular, it considers the possible role of Checkland's Soft Systems Methodology and Beer's Viable Systems Model in system design. The paper summarizes

  12. Combined heat pump system and ice making system

    Microsoft Academic Search

    Bottum

    1979-01-01

    A combined heat pump system and ice making system is described that includes a heat pump system used for normal heating purposes. The heat pump system is augmented with an ice making system wherein ice is formed on the system evaporator. This ice making improves the operational efficiency of the heat pump system during cold or sunless periods. Additionally, the

  13. Model-Based Systems

    NASA Technical Reports Server (NTRS)

    Frisch, Harold P.

    2007-01-01

    Engineers, who design systems using text specification documents, focus their work upon the completed system to meet Performance, time and budget goals. Consistency and integrity is difficult to maintain within text documents for a single complex system and more difficult to maintain as several systems are combined into higher-level systems, are maintained over decades, and evolve technically and in performance through updates. This system design approach frequently results in major changes during the system integration and test phase, and in time and budget overruns. Engineers who build system specification documents within a model-based systems environment go a step further and aggregate all of the data. They interrelate all of the data to insure consistency and integrity. After the model is constructed, the various system specification documents are prepared, all from the same database. The consistency and integrity of the model is assured, therefore the consistency and integrity of the various specification documents is insured. This article attempts to define model-based systems relative to such an environment. The intent is to expose the complexity of the enabling problem by outlining what is needed, why it is needed and how needs are being addressed by international standards writing teams.

  14. Active optical zoom system

    DOEpatents

    Wick, David V.

    2005-12-20

    An active optical zoom system changes the magnification (or effective focal length) of an optical imaging system by utilizing two or more active optics in a conventional optical system. The system can create relatively large changes in system magnification with very small changes in the focal lengths of individual active elements by leveraging the optical power of the conventional optical elements (e.g., passive lenses and mirrors) surrounding the active optics. The active optics serve primarily as variable focal-length lenses or mirrors, although adding other aberrations enables increased utility. The active optics can either be LC SLMs, used in a transmissive optical zoom system, or DMs, used in a reflective optical zoom system. By appropriately designing the optical system, the variable focal-length lenses or mirrors can provide the flexibility necessary to change the overall system focal length (i.e., effective focal length), and therefore magnification, that is normally accomplished with mechanical motion in conventional zoom lenses. The active optics can provide additional flexibility by allowing magnification to occur anywhere within the FOV of the system, not just on-axis as in a conventional system.

  15. Exploration EVA System

    NASA Technical Reports Server (NTRS)

    Kearney, Lara

    2004-01-01

    In January 2004, the President announced a new Vision for Space Exploration. NASA's Office of Exploration Systems has identified Extravehicular Activity (EVA) as a critical capability for supporting the Vision for Space Exploration. EVA is required for all phases of the Vision, both in-space and planetary. Supporting the human outside the protective environment of the vehicle or habitat and allow ing him/her to perform efficient and effective work requires an integrated EVA "System of systems." The EVA System includes EVA suits, airlocks, tools and mobility aids, and human rovers. At the core of the EVA System is the highly technical EVA suit, which is comprised mainly of a life support system and a pressure/environmental protection garment. The EVA suit, in essence, is a miniature spacecraft, which combines together many different sub-systems such as life support, power, communications, avionics, robotics, pressure systems and thermal systems, into a single autonomous unit. Development of a new EVA suit requires technology advancements similar to those required in the development of a new space vehicle. A majority of the technologies necessary to develop advanced EVA systems are currently at a low Technology Readiness Level of 1-3. This is particularly true for the long-pole technologies of the life support system.

  16. Power Systems Control Architecture

    SciTech Connect

    James Davidson

    2005-01-01

    A diagram provided in the report depicts the complexity of the power systems control architecture used by the national power structure. It shows the structural hierarchy and the relationship of the each system to those other systems interconnected to it. Each of these levels provides a different focus for vulnerability testing and has its own weaknesses. In evaluating each level, of prime concern is what vulnerabilities exist that provide a path into the system, either to cause the system to malfunction or to take control of a field device. An additional vulnerability to consider is can the system be compromised in such a manner that the attacker can obtain critical information about the system and the portion of the national power structure that it controls.

  17. MDT DCS Electronics System

    E-print Network

    Tsarouchas, Charilaos; Gazis, Evangelos; Tsipolitis, Georgios

    This note has the aim to present the Detector Control System for the Monitor- ing of the electronics values of MDT chambers in ATLAS experiment in CERN. This system is decided to be called in short ELTX. The principal task of DCS is to enable and ensure the coherent and safe oper- ation of the detector. The interaction of detector expers, users or shifters to the detector hardware is also done via DCS. This is the responsible system of moni- toring the operational parameters and the overall state of the detector, the alarm generation and handling, the connection of hardware values to databases and the interaction with the DAQ system. Through this thesis, one can see what ELTX system has to offer as a Detector Control System and in detail, what is the hardware to be controlled and monitored. Moreover it is presented the mainstream of central Atlas DCS concerning the active interfaces.ELTX is a system following these standards.

  18. Thermodynamics of Nonadditive Systems

    NASA Astrophysics Data System (ADS)

    Latella, Ivan; Pérez-Madrid, Agustín; Campa, Alessandro; Casetti, Lapo; Ruffo, Stefano

    2015-06-01

    The usual formulation of thermodynamics is based on the additivity of macroscopic systems. However, there are numerous examples of macroscopic systems that are not additive, due to the long-range character of the interaction among the constituents. We present here an approach in which nonadditive systems can be described within a purely thermodynamics formalism. The basic concept is to consider a large ensemble of replicas of the system where the standard formulation of thermodynamics can be naturally applied and the properties of a single system can be consequently inferred. After presenting the approach, we show its implementation in systems where the interaction decays as 1 /r? in the interparticle distance r , with ? smaller than the embedding dimension d , and in the Thirring model for gravitational systems.

  19. Testing expert systems

    NASA Technical Reports Server (NTRS)

    Chang, C. L.; Stachowitz, R. A.

    1988-01-01

    Software quality is of primary concern in all large-scale expert system development efforts. Building appropriate validation and test tools for ensuring software reliability of expert systems is therefore required. The Expert Systems Validation Associate (EVA) is a validation system under development at the Lockheed Artificial Intelligence Center. EVA provides a wide range of validation and test tools to check correctness, consistency, and completeness of an expert system. Testing a major function of EVA. It means executing an expert system with test cases with the intent of finding errors. In this paper, we describe many different types of testing such as function-based testing, structure-based testing, and data-based testing. We describe how appropriate test cases may be selected in order to perform good and thorough testing of an expert system.

  20. The ILC control system.

    SciTech Connect

    Carwardine, J.; Saunders, C.; Arnold, N.; Lenkszus, F.; Rehlich, K.; Simrock, S.; Banerjee, b.; Chase, B.; Gottschalk, E.; Joireman, P.; Kasley, P.; Lackey, S.; McBride, P.; Pavlicek, V.; Patrick, J.; Votava, M.; Wolbers, S.; Furukawa, K.; Michizono, S.; Larson, R.S.; Downing, R.; DESY; FNAL; SLAC

    2007-01-01

    Since the last ICALEPCS, a small multi-region team has developed a reference design model for a control system for the International Linear Collider as part of the ILC Global Design Effort. The scale and performance parameters of the ILC accelerator require new thinking in regards to control system design. Technical challenges include the large number of accelerator systems to be controlled, the large scale of the accelerator facility, the high degree of automation needed during accelerator operations, and control system equipment requiring 'Five Nines' availability. The R&D path for high availability touches the control system hardware, software, and overall architecture, and extends beyond traditional interfaces into the technical systems. Software considerations for HA include fault detection through exhaustive out-of-band monitoring and automatic state migration to redundant systems, while the telecom industry's emerging ATCA standard - conceived, specified, and designed for High Availability - is being evaluated for suitability for ILC front-end electronics.

  1. Hydrothermal mineralising systems as critical systems

    NASA Astrophysics Data System (ADS)

    Hobbs, Bruce

    2015-04-01

    Hydrothermal mineralising systems as critical systems. Bruce E Hobbs1,2, Alison Ord1 and Mark A. Munro1. 1. Centre for Exploration Targeting, The University of Western Australia, M006, 35 Stirling Highway, Crawley, WA 6009, Australia. 2. CSIRO Earth and Resource Engineering, Bentley, WA, Australia Hydrothermal mineralising systems are presented as large, open chemical reactors held far from equilibrium during their life-time by the influx of heat, fluid and dissolved chemical species. As such they are nonlinear dynamical systems and need to be analysed using the tools that have been developed for such systems. Hydrothermal systems undergo a number of transitions during their evolution and this paper focuses on methods for characterising these transitions in a quantitative manner and establishing whether they resemble first or second (critical) phase transitions or whether they have some other kind of nature. Critical phase transitions are characterised by long range correlations for some parameter characteristic of the system, power-law probability distributions so that there is no characteristic length scale and a high sensitivity to perturbations; as one approaches criticality, characteristic parameters for the system scale in a power law manner with distance from the critical point. The transitions undergone in mineralised hydrothermal systems are: (i) widespread, non-localised mineral alteration involving exothermic mineral reactions that produce hydrous silicate phases, carbonates and iron-oxides, (ii) strongly localised veining, brecciation and/or stock-work formation, (iii) a series of endothermic mineral reactions involving the formation of non-hydrous silicates, sulphides and metals such as gold, (iv) multiple repetitions of transitions (ii) and (iii). We have quantified aspects of these transitions in gold deposits from the Yilgarn craton of Western Australia using wavelet transforms. This technique is convenient and fast. It enables one to establish if the transition is multifractal (and if so, quantify the multifractal spectrum) and determine the scale dependence of long range correlations or anti-correlations. The availability of long drill holes with detailed chemical analyses and mineral abundances derived from hyperspectral data enables individual ore bodies to be characterised in a quantitative manner and constraints placed on whether the various transition are possibly critical or of some other form. We also present some simple nonlinear models that produce the multifractal character and correlation scaling relations observed in these data sets,

  2. System model of an image stabilization system

    NASA Astrophysics Data System (ADS)

    Carmona, Manuel; Gómez, José María.; Roma, David; Casas, Albert; López, Manel; Bosch, José; Herms, Atilà; Sabater, Josep; Volkmer, Reiner; Heidecke, Frank; Maue, Thorsten; Nakai, Eiji; Schmidt, Wolfgang

    2014-08-01

    The Polarimetric and Helioseismic Imager (PHI) instrument is part of the remote instruments for the ESA Solar Orbiter (SO), which is scheduled to launch in 2017. PHI captures polarimetric images from the Sun to better understand our nearest star, the Sun. A set of images is acquired with different polarizations, and afterwards is processed to extract the Stokes parameters. As Stokes parameters require the subtraction of the image values, in order to get the desired quality it is necessary to have good contrast in the image and very small displacements between them. As a result an Image Stabilization System (ISS) is required. This paper is focused in the behavior and the main characteristics of this system. This ISS is composed of a camera, a tip-tilt mirror and a control system. The camera is based on a STAR1000 sensor that includes a 10 bits resolution high-speed Analog-to-Digital Converter (ADC). The control system includes a Correlation Tracking (CT) algorithm that determines the necessary corrections. The tip-tilt mirror is moved based on this corrections to minimize the effects of the spacecraft (S/C) drift and jitter with respect to the Sun. Due to its stringent requirements, a system model has been developed in order to verify that the required parameters can be satisfied. The results show that the ISS is feasible, although the margins are very small.

  3. Environmental Control and Life Support Systems and Power Systems ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    Environmental Control and Life Support Systems and Power Systems - Space Transportation System, Orbiter Discovery (OV-103), Lyndon B. Johnson Space Center, 2101 NASA Parkway, Houston, Harris County, TX

  4. Neotropical Ichthyology, 10(1): 167-176, 2012 Copyright 2012 Sociedade Brasileira de Ictiologia

    E-print Network

    García-Berthou, Emili

    niloticus, and channel catfish Ictalurus punctatus) and two native (yellowtail tetra Astyanax altiparanae Oreochromis niloticus e o bagre do canal Ictalurus punctatus) e duas nativas (o lambari do rabo amarelo. punctatus), depending largely on species-specific prey behavior but also on prey size and morphological

  5. Quality monitored distributed voting system

    DOEpatents

    Skogmo, D.

    1997-03-18

    A quality monitoring system can detect certain system faults and fraud attempts in a distributed voting system. The system uses decoy voters to cast predetermined check ballots. Absent check ballots can indicate system faults. Altered check ballots can indicate attempts at counterfeiting votes. The system can also cast check ballots at predetermined times to provide another check on the distributed voting system. 6 figs.

  6. Quality monitored distributed voting system

    DOEpatents

    Skogmo, David (Albuquerque, NM)

    1997-01-01

    A quality monitoring system can detect certain system faults and fraud attempts in a distributed voting system. The system uses decoy voters to cast predetermined check ballots. Absent check ballots can indicate system faults. Altered check ballots can indicate attempts at counterfeiting votes. The system can also cast check ballots at predetermined times to provide another check on the distributed voting system.

  7. Operating Systems Should Provide Transactions

    Microsoft Academic Search

    Donald E. Porter; Emmett Witchel

    2009-01-01

    Operating systems can efficiently provide system transactions to user applications, in which user-level pro- cesses can execute a series of system calls atomically and in isolation from other processes on the system. The ef- fects of system calls performed during a system transac- tion are not visible to the rest of the system (other threads or hardware devices) until the

  8. Distributed Deliberative Recommender Systems

    NASA Astrophysics Data System (ADS)

    Recio-García, Juan A.; Díaz-Agudo, Belén; González-Sanz, Sergio; Sanchez, Lara Quijano

    Case-Based Reasoning (CBR) is one of most successful applied AI technologies of recent years. Although many CBR systems reason locally on a previous experience base to solve new problems, in this paper we focus on distributed retrieval processes working on a network of collaborating CBR systems. In such systems, each node in a network of CBR agents collaborates, arguments and counterarguments its local results with other nodes to improve the performance of the system's global response. We describe D2ISCO: a framework to design and implement deliberative and collaborative CBR systems that is integrated as a part of jcolibritwo an established framework in the CBR community. We apply D2ISCO to one particular simplified type of CBR systems: recommender systems. We perform a first case study for a collaborative music recommender system and present the results of an experiment of the accuracy of the system results using a fuzzy version of the argumentation system AMAL and a network topology based on a social network. Besides individual recommendation we also discuss how D2ISCO can be used to improve recommendations to groups and we present a second case of study based on the movie recommendation domain with heterogeneous groups according to the group personality composition and a group topology based on a social network.

  9. Nemesis Autonomous Test System

    NASA Technical Reports Server (NTRS)

    Barltrop, Kevin J.; Lee, Cin-Young; Horvath, Gregory A,; Clement, Bradley J.

    2012-01-01

    A generalized framework has been developed for systems validation that can be applied to both traditional and autonomous systems. The framework consists of an automated test case generation and execution system called Nemesis that rapidly and thoroughly identifies flaws or vulnerabilities within a system. By applying genetic optimization and goal-seeking algorithms on the test equipment side, a "war game" is conducted between a system and its complementary nemesis. The end result of the war games is a collection of scenarios that reveals any undesirable behaviors of the system under test. The software provides a reusable framework to evolve test scenarios using genetic algorithms using an operation model of the system under test. It can automatically generate and execute test cases that reveal flaws in behaviorally complex systems. Genetic algorithms focus the exploration of tests on the set of test cases that most effectively reveals the flaws and vulnerabilities of the system under test. It leverages advances in state- and model-based engineering, which are essential in defining the behavior of autonomous systems. It also uses goal networks to describe test scenarios.

  10. Benchmarking unstructured systems

    SciTech Connect

    Brice, L.; Connell, J.; Lockhart, G.

    1983-01-01

    Systems developed without the advantage of structured techniques can currently be found, even though most managers agree that the lack of such techniques is apt to produce an inferior product. When an unstructured system is identified, management must decide if it should be rewritten according to modern standards. The case study presented here describes how management in one Data Processing shop made that decision and learned something about their perceptions of the staff as well. To be judged successful, a system should be friendly, useful and easily maintainable. Research has shown that psychologically complex programs are more expensive to maintain than those developed with structured techniques, free from such complexity. In this study, three suspect systems were statistically measured against a base system. When a suspect system proved at least as psychologically complex as the base system, future maintenance costs were assumed to be at least as high as for the benchmark system. In addition to judging whether or not a system should be rewritten to provide ease of maintenance, the study provided management with a more accurate view of programmer work habits. Programmers previously judged to be extremely competent had created a high level of psychological complexity which is expected to result in high maintenance costs when other programmers become responsible for the system.

  11. Intelligent systems engineering methodology

    NASA Technical Reports Server (NTRS)

    Fouse, Scott

    1990-01-01

    An added challenge for the designers of large scale systems such as Space Station Freedom is the appropriate incorporation of intelligent system technology (artificial intelligence, expert systems, knowledge-based systems, etc.) into their requirements and design. This presentation will describe a view of systems engineering which successfully addresses several aspects of this complex problem: design of large scale systems, design with requirements that are so complex they only completely unfold during the development of a baseline system and even then continue to evolve throughout the system's life cycle, design that involves the incorporation of new technologies, and design and development that takes place with many players in a distributed manner yet can be easily integrated to meet a single view of the requirements. The first generation of this methodology was developed and evolved jointly by ISX and the Lockheed Aeronautical Systems Company over the past five years on the Defense Advanced Research Projects Agency/Air Force Pilot's Associate Program, one of the largest, most complex, and most successful intelligent systems constructed to date. As the methodology has evolved it has also been applied successfully to a number of other projects. Some of the lessons learned from this experience may be applicable to Freedom.

  12. Automated biowaste sampling system feces monitoring system

    NASA Technical Reports Server (NTRS)

    Hunt, S. R.; Glanfield, E. J.

    1979-01-01

    The Feces Monitoring System (FMS) Program designed, fabricated, assembled and tested an engineering model waste collector system (WCS) to be used in support of life science and medical experiments related to Shuttle missions. The FMS design was patterned closely after the Shuttle WCS, including: interface provisions; mounting; configuration; and operating procedures. These similarities make it possible to eventually substitute an FMS for the Shuttle WCS of Orbiter. In addition, several advanced waste collection features, including the capability of real-time inertial fecal separation and fecal mass measurement and sampling were incorporated into the FMS design.

  13. The Solar System

    NSDL National Science Digital Library

    National Science Teachers Association (NSTA)

    2007-03-21

    The Solar System SciPack explores the solar system and the various bodies within it. The focus in on the Standards and Benchmarks related to how we have learned about the solar system and what we know about the planets, moons, and other bodies in the solar system. Special focus is also given to how the solar system and its bodies formed. In addition to comprehensive inquiry-based learning materials tied to Science Education Standards and Benchmarks, the SciPack includes the following additional components:? Pedagogical Implications section addressing common misconceptions, teaching resources and strand maps linking grade band appropriate content to standards. ? Access to one-on-one support via e-mail to content "Wizards".? Final Assessment which can be used to certify mastery of the concepts.Learning Outcomes:Solar System: The Earth in Space? Explain that we discovered and learn about the other planets through the use of various kinds of telescopes, space probes, and other technologies.? Relate observations of the motion of objects in the sky to a Sun-centric model of the solar system, including observations of the "wandering" stars (planets) from Earth's frame of reference.? Recognize that Earth is one of the planets in the solar system, that it orbits the Sun just as the other planets do.Solar System: A Look at the Planets? Describe, compare, and contrast the following basic features of the planets in our solar system: size, composition, atmosphere, periods of rotation and revolution, surface features, and ring systems.? Describe the similarities and differences between the terrestrial and Jovian planets.? Describe, compare, and contrast the characteristics of planetary moons in our solar system.Solar System: Asteroids, Comets, and Meteorites? Describe the similarities and differences in comets, asteroids, and meteors.? Describe the size, composition, and motion of meteors, asteroids, and comets.? Differentiate between meteors, meteorites, and meteoroids, and explain what happens to meteors as they fall through Earth's atmosphere.? Explain how we learn about asteroids, comets, and meteorites.Solar System: Formation of Our Solar System? Provide the basic story line of how the solar system may have formed from the debris of exploding stars. ? Relate the different characteristics and features of the planets to their different distances from the sun.? Explain some of the methods scientists have used to learn about the formation and evolution of the solar system.

  14. Centrifugal pump fuel system

    SciTech Connect

    McGlone, M.E.; Larkins, L.J.; Johnson, R.O.; Moeller, K.A.

    1993-06-22

    A centrifugal pump fuel system for an engine driven fuel pump for an aircraft gas turbine engine is described comprising: a centrifugal pump having at constant speed rising head/flow characteristic at low flows; a plumbing system receiving flow from the pump, and having at least one control valve located down stream of and defining a discrete volume of the plumbing system; a plumbing resonant frequency defined by the discrete volume, the geometry of the plumbing system, and the bulk modulus of the fuel; a pressure difference regulating valve located adjacent to the discharge of the pump, up stream of the vast majority of the discrete volume; and the frequency response of the regulating valve being significantly less than the frequency response of the plumbing system such that the response of the regulating valve is attenuated at the resonant frequency of the plumbing system.

  15. Toward intelligent information system

    NASA Astrophysics Data System (ADS)

    Komatsu, Sanzo

    NASA/RECON, the predecessor of DIALOG System, was originally designed as a user friendly system for astronauts, so that they should not miss-operate the machine in spite of tension in the outer space. Since then, DIALOG has endeavoured to develop a series of user friendly systems, such as knowledge index, inbound gateway, as well as Version II. In this so-called end user searching era, DIALOG has released a series of front end systems successively; DIALOG Business Connection, DIALOG Medical Connection and OneSearch in 1986, early and late 1987 respectively. They are all called expert systems. In this paper, the features of each system are described in some detail and the remaining critical issues are also discussed.

  16. Operations management system

    NASA Technical Reports Server (NTRS)

    Brandli, A. E.; Eckelkamp, R. E.; Kelly, C. M.; Mccandless, W.; Rue, D. L.

    1990-01-01

    The objective of an operations management system is to provide an orderly and efficient method to operate and maintain aerospace vehicles. Concepts are described for an operations management system and the key technologies are highlighted which will be required if this capability is brought to fruition. Without this automation and decision aiding capability, the growing complexity of avionics will result in an unmanageable workload for the operator, ultimately threatening mission success or survivability of the aircraft or space system. The key technologies include expert system application to operational tasks such as replanning, equipment diagnostics and checkout, global system management, and advanced man machine interfaces. The economical development of operations management systems, which are largely software, will require advancements in other technological areas such as software engineering and computer hardware.

  17. Cu-Sn System

    NSDL National Science Digital Library

    Kattner, Ursula

    2003-01-01

    The information provided for the Cu-Sn System consists of five parts: - Diagram: The diagram shows the calculated phase diagram of the system. - Status: The source and status of the analytical description of the Gibbs energies of the phases. - Additional Assessments: Bibliographic information for alternate thermodynamic descriptions. - Invariant Equilibria: Table with the calculated invariant equilibria of the system. The table lists the phases involved in the reaction, phase compositions and reaction temperature. - Phases: Table with the phases of the system. The table lists the crystal structure, common names of the phases and the model used for the thermodynamic description. Thermodynamic databases allow the compact storage of phase equilibria information in the form of Gibbs energy functions for each phase. The thermodynamic description of each phase in the binary system is derived from the assessment of the available phase equilibria and thermochemical data. The calculated phase diagram of the Cu-Sn system is presented.

  18. Ag-Bi System

    NSDL National Science Digital Library

    Kattner, Ursula

    2003-01-01

    The information provided for the Ag-Bi System consists of five parts: - Diagram: The diagram shows the calculated phase diagram of the system. - Status: The source and status of the analytical description of the Gibbs energies of the phases. - Additional Assessments: Bibliographic information for alternate thermodynamic descriptions. - Invariant Equilibria: Table with the calculated invariant equilibria of the system. The table lists the phases involved in the reaction, phase compositions and reaction temperature. - Phases: Table with the phases of the system. The table lists the crystal structure, common names of the phases and the model used for the thermodynamic description. Thermodynamic databases allow the compact storage of phase equilibria information in the form of Gibbs energy functions for each phase. The thermodynamic description of each phase in the binary system is derived from the assessment of the available phase equilibria and thermochemical data. The calculated phase diagram of the Ag-Bi system is presented.

  19. Ag-Cu System

    NSDL National Science Digital Library

    Kattner, Ursula

    2003-01-01

    The information provided for the Ag-Cu System consists of five parts: - Diagram: The diagram shows the calculated phase diagram of the system. - Status: The source and status of the analytical description of the Gibbs energies of the phases. - Additional Assessments: Bibliographic information for alternate thermodynamic descriptions. - Invariant Equilibria: Table with the calculated invariant equilibria of the system. The table lists the phases involved in the reaction, phase compositions and reaction temperature. - Phases: Table with the phases of the system. The table lists the crystal structure, common names of the phases and the model used for the thermodynamic description. Thermodynamic databases allow the compact storage of phase equilibria information in the form of Gibbs energy functions for each phase. The thermodynamic description of each phase in the binary system is derived from the assessment of the available phase equilibria and thermochemical data. The calculated phase diagram of the Ag-Cu system is presented.

  20. Bi-Cu System

    NSDL National Science Digital Library

    Kattner, Ursula

    2003-01-01

    The information provided for the Bi-Cu System consists of five parts: - Diagram: The diagram shows the calculated phase diagram of the system. - Status: The source and status of the analytical description of the Gibbs energies of the phases. - Additional Assessments: Bibliographic information for alternate thermodynamic descriptions. - Invariant Equilibria: Table with the calculated invariant equilibria of the system. The table lists the phases involved in the reaction, phase compositions and reaction temperature. - Phases: Table with the phases of the system. The table lists the crystal structure, common names of the phases and the model used for the thermodynamic description. Thermodynamic databases allow the compact storage of phase equilibria information in the form of Gibbs energy functions for each phase. The thermodynamic description of each phase in the binary system is derived from the assessment of the available phase equilibria and thermochemical data. The calculated phase diagram of the Bi-Cu system is presented.

  1. Pb-Sn System

    NSDL National Science Digital Library

    Kattner, Ursula

    2003-01-01

    The information provided for the Pb-Sn System consists of five parts: - Diagram: The diagram shows the calculated phase diagram of the system. - Status: The source and status of the analytical description of the Gibbs energies of the phases. - Additional Assessments: Bibliographic information for alternate thermodynamic descriptions. - Invariant Equilibria: Table with the calculated invariant equilibria of the system. The table lists the phases involved in the reaction, phase compositions and reaction temperature. - Phases: Table with the phases of the system. The table lists the crystal structure, common names of the phases and the model used for the thermodynamic description. Thermodynamic databases allow the compact storage of phase equilibria information in the form of Gibbs energy functions for each phase. The thermodynamic description of each phase in the binary system is derived from the assessment of the available phase equilibria and thermochemical data. The calculated phase diagram of the Pb-Sn system is presented.

  2. Ag-Pb System

    NSDL National Science Digital Library

    Kattner, Ursula

    2003-01-01

    The information provided for the Ag-Pb System consists of five parts: - Diagram: The diagram shows the calculated phase diagram of the system. - Status: The source and status of the analytical description of the Gibbs energies of the phases. - Additional Assessments: Bibliographic information for alternate thermodynamic descriptions. - Invariant Equilibria: Table with the calculated invariant equilibria of the system. The table lists the phases involved in the reaction, phase compositions and reaction temperature. - Phases: Table with the phases of the system. The table lists the crystal structure, common names of the phases and the model used for the thermodynamic description. Thermodynamic databases allow the compact storage of phase equilibria information in the form of Gibbs energy functions for each phase. The thermodynamic description of each phase in the binary system is derived from the assessment of the available phase equilibria and thermochemical data. The calculated phase diagram of the Ag-Pb system is presented.

  3. Ag-Sn System

    NSDL National Science Digital Library

    Kattner, Ursula

    2003-01-01

    The information provided for the Ag-Sn System consists of five parts: - Diagram: The diagram shows the calculated phase diagram of the system. - Status: The source and status of the analytical description of the Gibbs energies of the phases. - Additional Assessments: Bibliographic information for alternate thermodynamic descriptions. - Invariant Equilibria: Table with the calculated invariant equilibria of the system. The table lists the phases involved in the reaction, phase compositions and reaction temperature. - Phases: Table with the phases of the system. The table lists the crystal structure, common names of the phases and the model used for the thermodynamic description. Thermodynamic databases allow the compact storage of phase equilibria information in the form of Gibbs energy functions for each phase. The thermodynamic description of each phase in the binary system is derived from the assessment of the available phase equilibria and thermochemical data. The calculated phase diagram of the Ag-Sn system is presented.

  4. Bi-Sn System

    NSDL National Science Digital Library

    Kattner, Ursula

    2003-01-01

    Thermodynamic databases allow the compact storage of phase equilibria information in the form of Gibbs energy functions for each phase. The thermodynamic description of each phase in the binary system is derived from the assessment of the available phase equilibria and thermochemical data. The calculated phase diagram of the Bi-Sn system is presented. The information provided for the Bi-Sn System consists of five parts: - Diagram: The diagram shows the calculated phase diagram of the system. - Status: The source and status of the analytical description of the Gibbs energies of the phases. - Additional Assessments: Bibliographic information for alternate thermodynamic descriptions. - Invariant Equilibria: Table with the calculated invariant equilibria of the system. The table lists the phases involved in the reaction, phase compositions and reaction temperature. - Phases: Table with the phases of the system. The table lists the crystal structure, common names of the phases and the model used for the thermodynamic description.

  5. Bi-Pb System

    NSDL National Science Digital Library

    Kattner, Ursula

    2003-01-01

    The information provided for the Bi-Pb System consists of five parts: - Diagram: The diagram shows the calculated phase diagram of the system. - Status: The source and status of the analytical description of the Gibbs energies of the phases. - Additional Assessments: Bibliographic information for alternate thermodynamic descriptions. - Invariant Equilibria: Table with the calculated invariant equilibria of the system. The table lists the phases involved in the reaction, phase compositions and reaction temperature. - Phases: Table with the phases of the system. The table lists the crystal structure, common names of the phases and the model used for the thermodynamic description. Thermodynamic databases allow the compact storage of phase equilibria information in the form of Gibbs energy functions for each phase. The thermodynamic description of each phase in the binary system is derived from the assessment of the available phase equilibria and thermochemical data. The calculated phase diagram of the Bi-Pb system is presented.

  6. Cu-Pb System

    NSDL National Science Digital Library

    Kattner, Ursula

    2003-01-01

    The information provided for the Cu-Pb System consists of five parts: - Diagram: The diagram shows the calculated phase diagram of the system. - Status: The source and status of the analytical description of the Gibbs energies of the phases. - Additional Assessments: Bibliographic information for alternate thermodynamic descriptions. - Invariant Equilibria: Table with the calculated invariant equilibria of the system. The table lists the phases involved in the reaction, phase compositions and reaction temperature. - Phases: Table with the phases of the system. The table lists the crystal structure, common names of the phases and the model used for the thermodynamic description. Thermodynamic databases allow the compact storage of phase equilibria information in the form of Gibbs energy functions for each phase. The thermodynamic description of each phase in the binary system is derived from the assessment of the available phase equilibria and thermochemical data. The calculated phase diagram of the Cu-Pb system is presented.

  7. Quantum System Identification

    E-print Network

    Daniel Burgarth; Kazuya Yuasa

    2011-04-04

    The aim of quantum system identification is to estimate the ingredients inside a black box, in which some quantum-mechanical unitary process takes place, by just looking at its input-output behavior. Here we establish a basic and general framework for quantum system identification, that allows us to classify how much knowledge about the quantum system is attainable, in principle, from a given experimental setup. Prior knowledge on some elements of the black box helps the system identification. We present an example in which a Bell measurement is more efficient to identify the system. When the topology of the system is known, the framework enables us to establish a general criterion for the estimability of the coupling constants in its Hamiltonian.

  8. Civil satellite navigation systems

    NASA Astrophysics Data System (ADS)

    Blanchard, Walter F.

    1991-07-01

    The use of satellite navigation for civil purposes is examined critically to compare the merits and costs of existing and practical satellite systems. Accuracy and range considerations are reviewed, and the basic requirements of radionavigation systems are set forth. Specific data are given regarding coverage area, integration with ground-based systems, monitoring and control, and accuracy. Systems reviewed include 'Starfix,' Inmarsat, EVA Vavsat, and Geostar/Locstar/Omnitracs, and extensive illustrations are provided to demonstrate constellation geometries. When in view, two or three geosynchronous satellites can provide acceptable fixing, and 9 satellites can provide global coverage. It is argued that systems such as 'Starfix' are commercially viable with less than 100 users, and Inmarsat is identified as an effective European civil system.

  9. Shuttle avionics system

    NASA Technical Reports Server (NTRS)

    Gardiner, R. A.; Bradford, W. C.

    1975-01-01

    The avionics system of the Space Shuttle is designed in a fail operational/fail safe architecture. The guidance, navigation and control system is implemented, through the onboard Orbiter digital computers. Guidance, navigation and control sensors are triplex, while the flight control effectors are mechanized either in load sharing or quad structure. Two sets of basic flight instruments and controls are provided along with electronic interfaces to allow for multiple selection of input destination and display source selection. Communications, tracking and instrumentation subsystems are mechanized as a dual hardware design for key operational elements. The data processing system allows for quad, triplex, dual or single computer operation. The power distribution subsystem provides a triple bus system with appropriate tie elements. A functional description is given of the computer system, the data bus, the mass memory unit, the multiplexer/demultiplexer and the CRT display system.

  10. Annual cycle energy system

    NASA Astrophysics Data System (ADS)

    Minturn, R. E.

    The annual cycle energy system (ACES) program which incorporates in a practical system the outstanding energy conservation potential that exists when the unidirectional heat pump and the interseasonal storage of energy are combined to provide heating, cooling, and domestic hot water to buildings is described. Information on the system, its applicability to different geographic areas, and the methodology for designing and building systems are enumerated. It is shown that the system is rugged, reliable, and appreciably more conservative of purchased energy than all practical alternatives. An ACES residential design methodology was also developed. It is concluded that the system is constant in efficiency and capacity during winter operation, independent of extremes in weather, contributes to the reduction of peak demand and increases in daily and seasonal load factors.

  11. Solar System Viewers

    NSDL National Science Digital Library

    Mike Ashbury

    This website contains three separate programs that produce animations of different aspects of our solar system. The Solar System Viewer indicates the location of terrestrial planets, gas giants, the asteroid belt, Kuiper Belt and comets in relation to the Sun. This program helps to give a sense of size and location within our solar system. The Other Solar Systems Viewer animates the recent discoveries of planets orbiting other stars. This application gives an animation of how these other solar systems operate. The Satellite Viewer animates the moons of the planets in our solar system to show their names and where they are located around their respective planets. The gas giants Jupiter, Saturn, Uranus and Neptune have more than one animation to show the different groups of moons that orbit them. The moons and planets in this animation are to scale to indicate size comparisons.

  12. Environmental Conservation Online System

    NSDL National Science Digital Library

    The Environmental Conservation Online System (ECOS) is a gateway web site that provides access to data systems in the Endangered Species and Fisheries and Habitat Conservation program areas, as well as other FWS and Government data sources. ECOS provides a central point of access to assist FWS personnel in managing data and information as well as provide general public access to information from numerous FWS databases. ECOS allows users to view, query, and, in some cases, edit data. Some of the larger applications are: Threatened and Endangered Species System (TESS), Habitat Tracking Information System (HabITS), Fish Passage Decision Support System (FPDSS), Contaminant Assessment Program (CAP), and Environmental Contaminants Data Management System (ECDMS). Mapping capabilities are also available, utilizing spatially referenced data in these databases. The general mapping utility, Geotract, is an interactive tool that includes data relevant to many service personnel and the public. Other specialized mapping tools are available for specific project and end-user needs.

  13. Computer systems analyst

    NSDL National Science Digital Library

    Iowa Public Television. School to Careers Project

    2002-01-01

    What do computer systems analysts actually do? This is the introductory page for a set of materials about a career as a computer systems analyst. Here the job of a computer systems analyst is defined and described. In the rest of the resource, students can examine three specialized job titles associated with computer system specialists: computer system administrator, senior network analyst, and programmer analyst. Students can view video clips of the computer system administrator, senior network analyst, and programmer analyst at work. A student challenge activity compares the records of 10 salespeople over a two-year period to determine who the best and worst salespeople are. Challenge activity answers and teacher suggestions are provided. Copyright 2005 Eisenhower National Clearinghouse

  14. Inductive System Health Monitoring

    NASA Technical Reports Server (NTRS)

    Iverson, David L.

    2004-01-01

    The Inductive Monitoring System (IMS) software was developed to provide a technique to automatically produce health monitoring knowledge bases for systems that are either difficult to model (simulate) with a computer or which require computer models that are too complex to use for real time monitoring. IMS uses nominal data sets collected either directly from the system or from simulations to build a knowledge base that can be used to detect anomalous behavior in the system. Machine learning and data mining techniques are used to characterize typical system behavior by extracting general classes of nominal data from archived data sets. IMS is able to monitor the system by comparing real time operational data with these classes. We present a description of learning and monitoring method used by IMS and summarize some recent IMS results.

  15. NEEDS - Information Adaptive System

    NASA Technical Reports Server (NTRS)

    Kelly, W. L.; Benz, H. F.; Meredith, B. D.

    1980-01-01

    The Information Adaptive System (IAS) is an element of the NASA End-to-End Data System (NEEDS) Phase II and is focused toward onboard image processing. The IAS is a data preprocessing system which is closely coupled to the sensor system. Some of the functions planned for the IAS include sensor response nonuniformity correction, geometric correction, data set selection, data formatting, packetization, and adaptive system control. The inclusion of these sensor data preprocessing functions onboard the spacecraft will significantly improve the extraction of information from the sensor data in a timely and cost effective manner, and provide the opportunity to design sensor systems which can be reconfigured in near real-time for optimum performance. The purpose of this paper is to present the preliminary design of the IAS and the plans for its development.

  16. Thermochemical energy systems research

    SciTech Connect

    Nix, R.G.

    1983-08-01

    This paper describes research at SERI on heat-pumped thermochemical energy systems and thermochemical reduction of CO/sub 2/ to CO for open-loop solar energy transport. Analysis of the NaOH-H/sub 2/O heat-pumped system indicated cost-effectiveness relative to a hot oil solar system with parabolic trough receivers for production of 0.101 MPa saturated steam. Current work is on definition of high-temperature heat-pumped systems. Future work should be experimental with an objective of small-scale validation of high-temperature heat-pumped systems. The thermochemical CO/sub 2/ reduction is an extremely difficult and long-range research problem. Costs are unknown but are suspected to be high because of system complexity. The CO/sub 2/ reduction research should be de-emphasized.

  17. Vital signs monitoring system

    NASA Technical Reports Server (NTRS)

    Steffen, Dale A. (Inventor); Sturm, Ronald E. (Inventor); Rinard, George A. (Inventor)

    1981-01-01

    A system is disclosed for monitoring vital physiological signs. Each of the system components utilizes a single hybrid circuit with each component having high accuracy without the necessity of repeated calibration. The system also has low power requirements, provides a digital display, and is of sufficiently small size to be incorporated into a hand-carried case for portable use. Components of the system may also provide independent outputs making the component useful, of itself, for monitoring one or more vital signs. The overall system preferably includes an ECG amplifier and cardiotachometer signal conditioner unit, an impedance pneumograph and respiration rate signal conditioner unit, a heart/breath rate processor unit, a temperature monitoring unit, a selector switch, a clock unit, and an LCD driver unit and associated LCDs, with the system being capable of being expanded as needed or desired, such as, for example, by addition of a systolic/diastolic blood pressure unit.

  18. Kepler's Multiple Planet Systems

    NASA Technical Reports Server (NTRS)

    Lissauer, Jack J.

    2012-01-01

    Among the 1800 Kepler targets that have candidate planets, 20% have two or more candidate planets. While most of these objects have not yet been confirmed as true planets, several considerations strongly suggest that the vast majority of these multi-candidate systems are true planetary systems. Virtually all candidate systems are stable, as tested by numerical integrations (assuming a nominal mass-radius relationship). Statistical studies performed on these candidates reveal a great deal about the architecture of planetary systems, including the typical spacing of orbits and flatness of planetary systems. The distribution of observed period ratios shows that the vast majority of candidate pairs are neither in nor near low-order mean motion resonances. Nonetheless, there are small but statistically significant excesses of candidate pairs both in resonance and spaced slightly too far apart to be in resonance, particularly near the 2:1 resonance. The characteristics of the confirmed Kepler multi-planet systems will also be discussed.

  19. On-Site Wastewater Treatment Systems: Mound System 

    E-print Network

    Lesikar, Bruce J.

    2002-04-22

    A mound system is a soil absorption system placed above the natural surface of the ground. The system distributes treated wastewater into the soil. This publication discusses the design and maintenance of mound systems....

  20. On-Site Wastewater Treatment Systems: Mound System

    E-print Network

    Lesikar, Bruce J.

    2002-04-22

    A mound system is a soil absorption system placed above the natural surface of the ground. The system distributes treated wastewater into the soil. This publication discusses the design and maintenance of mound systems....

  1. INFORMATION SYSTEMS AND WEB INFORMATION SYSTEMS : A METHODOLOGICAL PERSPECTIVE

    E-print Network

    Boyer, Edmond

    INFORMATION SYSTEMS AND WEB INFORMATION SYSTEMS : A METHODOLOGICAL PERSPECTIVE Colette Rolland ABSTRACT The Development of Information Systems (ISD) is a complex activity that requires methodological. However, Web Information Systems have facets such as information presentation, user profile, navigation

  2. Systems Portfolio Guide A Resource For Creating Your Systems Portfolio

    E-print Network

    Amin, S. Massoud

    Systems Portfolio Guide A Resource For Creating Your Systems Portfolio Academic Quality Improvement Program Contents The Systems Portfolio........................................................................................................... 9 Using the Systems Portfolio to document the Criteria for Accreditation

  3. Water Purification Systems

    NASA Technical Reports Server (NTRS)

    1992-01-01

    A water purification/recycling system developed by Photo-Catalytics, Inc. (PCI) for NASA is commercially available. The system cleanses and recycles water, using a "photo-catalysis" process in which light or radiant energy sparks a chemical reaction. Chemically stable semiconductor powders are added to organically polluted water. The powder absorbs ultraviolet light, and pollutants are oxidized and converted to carbon dioxide. Potential markets for the system include research and pharmaceutical manufacturing applications, as well as microchip manufacture and wastewater cleansing.

  4. Network operating system

    NASA Technical Reports Server (NTRS)

    1985-01-01

    Long-term and short-term objectives for the development of a network operating system for the Space Station are stated. The short-term objective is to develop a prototype network operating system for a 100 megabit/second fiber optic data bus. The long-term objective is to establish guidelines for writing a detailed specification for a Space Station network operating system. Major milestones are noted. Information is given in outline form.

  5. Operational gunshot location system

    NASA Astrophysics Data System (ADS)

    Showen, Robert

    1997-02-01

    The nation's first operational trial of a gunshot location system is underway in Redwood City, California. The system uses acoustic sensors widely distributed over an impacted community. The impulses received at each sensor allow triangulation of the gunfire location and prompt police dispatch. A computer display shows gunfire location superimposed on a map showing property boundaries. Police are responding to system events immediately and in a community-policing investigative role.

  6. The Endocrine System

    Microsoft Academic Search

    Elizabeth S. Gray

    Until recently our knowledge of the fetal endocrine system in the human and its normal development has been limited. We have\\u000a had even less understanding of how the classical endocrine system with its blood-borne hormones, interacted with the paracrine\\u000a system and its growth factors. In the last 10 years animal experimentation and epidemiological human studies have led to a\\u000a dramatic

  7. Adelic Integrable Systems

    E-print Network

    Mircea Pigli

    1995-07-06

    Incorporating the zonal spherical function (zsf) problems on real and $p$-adic hyperbolic planes into a Zakharov-Shabat integrable system setting, we find a wide class of integrable evolutions which respect the number-theoretic properties of the zsf problem. This means that at {\\it all} times these real and $p$-adic systems can be unified into an adelic system with an $S$-matrix which involves (Dirichlet, Langlands, Shimura...) L-functions.

  8. Solid source MOCVD system

    DOEpatents

    Hubert, B.N.; Wu, X.D.

    1998-10-13

    A system for MOCVD fabrication of superconducting and non-superconducting oxide films provides a delivery system for the feeding of metallorganic precursors for multi-component chemical vapor deposition. The delivery system can include multiple cartridges containing tightly packed precursor materials. The contents of each cartridge can be ground at a desired rate and fed together with precursor materials from other cartridges to a vaporization zone and then to a reaction zone within a deposition chamber for thin film deposition. 13 figs.

  9. Solid source MOCVD system

    DOEpatents

    Hubert, Brian N. (Yakima, WA); Wu, Xin Di (San Jose, CA)

    1998-01-01

    A system for MOCVD fabrication of superconducting and non-superconducting oxide films provides a delivery system for the feeding of metalorganic precursors for multi-component chemical vapor deposition. The delivery system can include multiple cartridges containing tightly packed precursor materials. The contents of each cartridge can be ground at a desired rate and fed together with precursor materials from other cartridges to a vaporization zone and then to a reaction zone within a deposition chamber for thin film deposition.

  10. Solar Stirling system development

    Microsoft Academic Search

    J. W. Stearns Jr.; Y. S. Won; P. T. Poon; R. Das; E. Y. Chow

    1979-01-01

    A low-cost, high-efficiency dish-Stirling solar thermal-electric power system is being developed for test in 1981. System components are the solar concentrator, receiver, fossil fuel combustor, thermal energy storage (TES), engine-generator, and power processing. System conceptualization is completed and design is in progress. Two receiver alternatives are being evaluated, a direct-coupled receiver-engine configuration with no TES and a heat pipe receiver

  11. Geographic Names Information System

    USGS Publications Warehouse

    U.S. Geological Survey

    1984-01-01

    The Geographic Names Information System (GNIS) is an automated data system developed by the U.S. Geological Survey (USGS) to standardize and disseminate information on geographic names. GNIS provides primary information for all known places, features, and areas in the United States identified by a proper name. The information in the system can be manipulated to meet varied needs. You can incorporate information from GNIS into your own data base for special applications.

  12. Informationally coherent quantum systems

    Microsoft Academic Search

    Ryszard Horodecki

    1994-01-01

    An information-theoretic approach to correlated quantum systems is developed. The precise definitions of the informationally coherent N-component system are presented in terms of the state (observable) dependent index of correlation. The informational coherence of the N-particle GHZ system in an entangled pure state is analysed and it is found that the observable-dependent index of correlation is less than or equal

  13. Amos World Testing System

    NSDL National Science Digital Library

    Amos, Orley M., 1954-.

    1997-01-01

    AmosWorld Testing System is developed by Orley M. Amos, Jr., Professor of Economics at Oklahoma State University. The testing system allows users to retrieve up to ten multiple choice questions on various economics topics. Among the topics covered are scarcity, business cycles, GDP, money and unemployment. After the users have answered the multiple choice questions, the testing system will notify the users which of the questions were answered correctly. The site does not provide the correct answer for incorrect choices, however.

  14. Drone Control System

    NASA Technical Reports Server (NTRS)

    1983-01-01

    Drones, subscale vehicles like the Firebees, and full scale retired military aircraft are used to test air defense missile systems. The DFCS (Drone Formation Control System) computer, developed by IBM (International Business Machines) Federal Systems Division, can track ten drones at once. A program called ORACLS is used to generate software to track and control Drones. It was originally developed by Langley and supplied by COSMIC (Computer Software Management and Information Center). The program saved the company both time and money.

  15. Fuel system technology overview

    NASA Technical Reports Server (NTRS)

    Friedman, R.

    1980-01-01

    Fuel system research and technology studies are being conducted to investigate the correlations and interactions of aircraft fuel system design and environment with applicable characteristics of the fuel. Topics include: (1) analysis of in-flight fuel temperatures; (2) fuel systems for high freezing point fuels; (3) experimental study of low temperature pumpability; (4) full scale fuel tank simulation; and (5) rapid freezing point measurement.

  16. Titan Saturn System Mission

    NASA Technical Reports Server (NTRS)

    Reh, Kim R.

    2009-01-01

    Titan is a high priority for exploration, as recommended by NASA's 2006 Solar System Exploration (SSE) Roadmap. NASA's 2003 National Research Council (NRC) Decadal Survey and ESA's Cosmic Vision Program Themes. Recent revolutionary Cassini-Huygens discoveries have dramatically escalated interest in Titan as the next scientific target in the outer solar system. This study demonstrates that an exciting Titan Saturn System Mission (TSSM) that explores two worlds of intense astrobiological interest can be initiated now as a single NASA/ESA collaboration.

  17. Artificial Immune Systems

    Microsoft Academic Search

    Wesam Barbakh; Ying Wu; Colin Fyfe

    The Artificial Immune System paradigm (AIS) is inspired by the biological immune system whose main goal is to protect the\\u000a human body from the attack of foreign pathogens such as virus, fungus or other parasites. The biological immune system is\\u000a capable of distinguishing between the normal components of our organism and the foreign materials that can cause us harm that

  18. Superintegrable systems on sphere

    Microsoft Academic Search

    A. V. Borisov; I. S. Mamaev

    2005-01-01

    We consider various generalizations of the Kepler problem to three-dimensional sphere $S^3$, a compact space of constant curvature. These generalizations include, among other things, addition of a spherical analog of the magnetic monopole (the Poincar\\\\'e--Appell system) and addition of a more complicated field, which itself is a generalization of the MICZ-system. The mentioned systems are integrable -- in fact, superintegrable.

  19. Evolvable Neural Software System

    NASA Technical Reports Server (NTRS)

    Curtis, Steven A.

    2009-01-01

    The Evolvable Neural Software System (ENSS) is composed of sets of Neural Basis Functions (NBFs), which can be totally autonomously created and removed according to the changing needs and requirements of the software system. The resulting structure is both hierarchical and self-similar in that a given set of NBFs may have a ruler NBF, which in turn communicates with other sets of NBFs. These sets of NBFs may function as nodes to a ruler node, which are also NBF constructs. In this manner, the synthetic neural system can exhibit the complexity, three-dimensional connectivity, and adaptability of biological neural systems. An added advantage of ENSS over a natural neural system is its ability to modify its core genetic code in response to environmental changes as reflected in needs and requirements. The neural system is fully adaptive and evolvable and is trainable before release. It continues to rewire itself while on the job. The NBF is a unique, bilevel intelligence neural system composed of a higher-level heuristic neural system (HNS) and a lower-level, autonomic neural system (ANS). Taken together, the HNS and the ANS give each NBF the complete capabilities of a biological neural system to match sensory inputs to actions. Another feature of the NBF is the Evolvable Neural Interface (ENI), which links the HNS and ANS. The ENI solves the interface problem between these two systems by actively adapting and evolving from a primitive initial state (a Neural Thread) to a complicated, operational ENI and successfully adapting to a training sequence of sensory input. This simulates the adaptation of a biological neural system in a developmental phase. Within the greater multi-NBF and multi-node ENSS, self-similar ENI s provide the basis for inter-NBF and inter-node connectivity.

  20. Rapid bus multiprocessor system

    SciTech Connect

    Zoccoli, M.P.; Sanderson, A.C.

    1981-11-01

    The proposed multimicroprocessor bus system combines ease of expansion, software reconfigurability, and reasonable cost. The basic design principle is a high-speed ECL bus shared by all the 16-bit processors, memories, and peripherals, such that each device has access to the bus during every processor clock cycle. Increasing system versatility and improving cost effectiveness in the implementation of multimicroprocessor system design are the goals of this bus design. 11 references.

  1. Automated Status Notification System

    NASA Technical Reports Server (NTRS)

    2005-01-01

    NASA Lewis Research Center's Automated Status Notification System (ASNS) was born out of need. To prevent "hacker attacks," Lewis' telephone system needed to monitor communications activities 24 hr a day, 7 days a week. With decreasing staff resources, this continuous monitoring had to be automated. By utilizing existing communications hardware, a UNIX workstation, and NAWK (a pattern scanning and processing language), we implemented a continuous monitoring system.

  2. System data flow

    SciTech Connect

    Beier, G.; Kappen, L.; Lutter, R.; Schoffel, K.; Stanzel, B.; Steinberger, K.; Wilhelms, H.

    1985-08-01

    MLLE is a multiprocessor system for data acquisition and processing in nuclear physics applications. A large memory allows accumulation of megachannel histograms. The system is built from VMEbus modules and interfaces CAMAC. MLLE is connected to a host computer under UNIX, where graphic representation and mathematical analysis can be done. On the MLLE a UNIX-like environment is established. The operating system DAMOS of MLLE allows dataflow controlled processing using about ten microprocessors operating in a non-hierarchical mode.

  3. Precision displacement reference system

    DOEpatents

    Bieg, Lothar F. (Albuquerque, NM); Dubois, Robert R. (Albuquerque, NM); Strother, Jerry D. (Edgewood, NM)

    2000-02-22

    A precision displacement reference system is described, which enables real time accountability over the applied displacement feedback system to precision machine tools, positioning mechanisms, motion devices, and related operations. As independent measurements of tool location is taken by a displacement feedback system, a rotating reference disk compares feedback counts with performed motion. These measurements are compared to characterize and analyze real time mechanical and control performance during operation.

  4. Radioisotope powered AMTEC systems

    Microsoft Academic Search

    Joseph F. Ivanenok; R. K. Sievers

    1994-01-01

    Alkali Metal Thermal to Electric Converter (AMTEC) systems are being developed for high performance spacecraft power systems, including small, General Purpose Heat Source (GPHS) powered systems. Several design concepts have been evaluated for the power range from 75 W to 1 kW. The specific power for these concepts has been found to be as high as 18-20 W\\/kg and 22

  5. Muscular and Skeletal Systems

    NSDL National Science Digital Library

    Ms. Jeni

    2010-11-03

    What do the muscular and skeletal systems do? Identify structures and functions of the muscular and skeletal systems of the human body. (S3.6) You are going to watch a Movie of muscular system. I'm going to hand out a worksheet and you need to write three facts that you have learned from the video in the spaces provided and then fill out the chart about the three types of muscles. Now you are going to do a ...

  6. Distributed Computerized Catalog System

    NASA Technical Reports Server (NTRS)

    Borgen, Richard L.; Wagner, David A.

    1995-01-01

    DarkStar Distributed Catalog System describes arbitrary data objects in unified manner, providing end users with versatile, yet simple search mechanism for locating and identifying objects. Provides built-in generic and dynamic graphical user interfaces. Design of system avoids some of problems of standard DBMS, and system provides more flexibility than do conventional relational data bases, or object-oriented data bases. Data-collection lattice partly hierarchical representation of relationships among collections, subcollections, and data objects.

  7. Hybrid knowledge systems

    NASA Technical Reports Server (NTRS)

    Subrahmanian, V. S.

    1994-01-01

    An architecture called hybrid knowledge system (HKS) is described that can be used to interoperate between a specification of the control laws describing a physical system, a collection of databases, knowledge bases and/or other data structures reflecting information about the world in which the physical system controlled resides, observations (e.g. sensor information) from the external world, and actions that must be taken in response to external observations.

  8. Dewey Decimal System

    NSDL National Science Digital Library

    Mz. Bird

    2011-09-30

    Understanding the Dewey Decimal system helps us understand why books are shelved the way they are in libraries. Many of you have asked... What is the Dewey Decimal System? I have referred you to this page to give you a brief overview. Just a quick side note.. I love this system. When I look a book up on our card catalog, walk over to the shelves ...

  9. Control Systems & LEED

    SciTech Connect

    Cooperman, Alissa; Dieckmann, John; Brodrick, James

    2012-06-01

    This article discusses the LEED guidelines (2009 v3), and corresponding points, that can only be attained using control systems for lighting, HVAC, and/or the entire building. Integrating and centralizing control systems allows for better building management, energy savings and can potentially award 29 points towards certification across the following categories: Sustainable Sites, Energy & Atmosphere, and Indoor Air Quality. In closing, potential energy savings are highlighted and the overall market potential for control systems are summarized.

  10. Microgrid Energy Management System

    NSDL National Science Digital Library

    Kirby, B. J.

    2003-01-01

    While key infrastructures that were not working as a result of the August 14, 2003 blackout were widely publicized, the systems that remained operational received less notice. An item of interest that has implications for better future control of the power grid is a January 2003 document from Oak Ridge National Laboratory. The report outlines new concepts for advanced Energy Management Systems for a condensed area of electrical load. The resulting interaction between these "microgrids" and the interconnecting distribution system is also discussed.

  11. Multibody systems handbook

    SciTech Connect

    Schiehlen, W. (Univ. Stuttgart (DE))

    1990-01-01

    Dynamics of multibody systems is of importance in the fields of robotics, biomechanics, spacecraft control, road and rail vehicle design, and dynamics of machinery. Many research problems have been solved and a considerable number of computer codes based on multibody formalisms is now available. This book reports on software systems for multibody system dynamics which are established and have found acceptance in the users community.

  12. Information Systems Security Information Systems Security

    E-print Network

    Lampson, Butler W.

    , the importance information systems security must understood levels command and throughout DOD. Cyber­attack easier than cyber­defense. An effective defense must successful against attacks while attacker need only succeed once,. Cyber­attack easier, faster, and cheaper than cyber­defense. Paradoxically, cyber­attack

  13. The LSST: A System of Systems

    Microsoft Academic Search

    Chuck F. Claver; G. P. Debois-Felsmann; F. Delgado; P. Hascall; S. Marshall; M. Nordby; G. Schumacher; J. Sebag

    2011-01-01

    The Large Synoptic Survey Telescope (LSST) is a complete observing system that acquires and archives images, processes and analyzes them, and publishes reduced images and catalogs of sources and objects. The LSST will operate over a ten year period producing a survey of 20,000 square degrees over the entire [Southern] sky in 6 filters (ugrizy) with each field having been

  14. Communication Systems Chair of Communication Systems

    E-print Network

    Schindelhauer, Christian

    of businesses directly depend on this network (online shops, auctions, b2b, multiplayer games, advertisements, porn sites, web services, ... :-)) #12;8 | 28 Communication Systems network insecurity Inner and intra and leaving them at half past nine (no mail and online communication was available ­ most MS operated networks

  15. Communication Systems Chair of Communication Systems

    E-print Network

    Schindelhauer, Christian

    Internet) and an arbitrary end system in a switched Ethernet is not visible to third party ­ But what to do questions from last lecture? We were dealing with Ethernet extensions last lecture: Why CSMA/CD was dropped in the 10 GbE and 100 GbE standards? What is the major difference between an Ethernet hub

  16. System Redesign for System Capacity Building

    ERIC Educational Resources Information Center

    Hargreaves, David H.

    2011-01-01

    Purpose: A recent development in England is the emergence, under various names, of groups of schools working together in a variety of collaborative ways. Such diversification enjoys broad political support. In this paper, the author aims to argue that the trend is potentially a radical transformation of the school system as a whole. The concepts…

  17. Communication Systems Chair of Communication Systems

    E-print Network

    Schindelhauer, Christian

    -in address like MAC (layer 2 in Ethernets, WLAN, BlueTooth, TokenRing) IP has no mechanism for avoiding / protocol introduced? Special IP addresses: Which IPv4 addresses could be assigned to end systems routable world wide? Which special addresses do you know? #12;4 | 26 IP does not implement any automatic address

  18. Communication Systems Chair of Communication Systems

    E-print Network

    Schindelhauer, Christian

    Sciences University of Freiburg 2009 #12;2 | 18 Communication Systems Organization Exam: Please do register with the exam office (10 BA and 5 Masters by now), so we could decide/announce as early as possible which part to offer (BA is oral-only) Started into theory of securing network connections

  19. Operational Management System for Regulated Water Systems

    NASA Astrophysics Data System (ADS)

    van Loenen, A.; van Dijk, M.; van Verseveld, W.; Berger, H.

    2012-04-01

    Most of the Dutch large rivers, canals and lakes are controlled by the Dutch water authorities. The main reasons concern safety, navigation and fresh water supply. Historically the separate water bodies have been controlled locally. For optimizating management of these water systems an integrated approach was required. Presented is a platform which integrates data from all control objects for monitoring and control purposes. The Operational Management System for Regulated Water Systems (IWP) is an implementation of Delft-FEWS which supports operational control of water systems and actively gives advice. One of the main characteristics of IWP is that is real-time collects, transforms and presents different types of data, which all add to the operational water management. Next to that, hydrodynamic models and intelligent decision support tools are added to support the water managers during their daily control activities. An important advantage of IWP is that it uses the Delft-FEWS framework, therefore processes like central data collection, transformations, data processing and presentation are simply configured. At all control locations the same information is readily available. The operational water management itself gains from this information, but it can also contribute to cost efficiency (no unnecessary pumping), better use of available storage and advise during (water polution) calamities.

  20. Solar System: Formation of Our Solar System

    NSDL National Science Digital Library

    National Science Teachers Association (NSTA)

    2006-11-01

    This Science Object is the fourth of four Science Objects in the Solar System SciPack. It explores the hypothesis that the solar system coalesced out of a giant cloud of gas and debris left in the wake of exploding stars about five billion years ago. Everything in and on the earth, including living organisms, is made of the material from this cloud. As Earth and the other planets formed, the heavier elements fell to their centers. On planets closer to the Sun (the inner planets), the lightest elements and their compounds were mostly blown or boiled away by radiation from the newly formed sun. However, on the outer planets, the lighter substances still surround them as deep atmospheres of gas or as frozen solid layers. Learning Outcomes:? Provide the basic story line of how the solar system may have formed from the debris of exploding stars. ? Relate the different characteristics and features of the planets to their different distances from the sun.? Explain some of the methods scientists have used to learn about the formation and evolution of the solar system.

  1. The global Earth observation system of systems

    NASA Astrophysics Data System (ADS)

    Achache, José

    2010-05-01

    Recognizing the growing need for improved Earth observations, 140 governments and leading international organizations have established the Group on Earth Observations, or GEO, to collaborate and implement a Global Earth Observation System of Systems (GEOSS) by the year 2015. Countries and organizations are contributing their respective Earth monitoring systems, from satellites in space and in situ instruments on land, in the oceans and in the atmosphere. They are interlinking these systems so that, together, they provide a more complete picture of Earth's systems dynamics. GEO is developing common technical standards to pool observations and ensure their cross calibration and validation. It is building a web-based infrastructure to ensure easy access to the wealth of data and services contributed to, or generated by, GEOSS. GEO has been promoting the free and open sharing and dissemination of Earth observation data which has already driven significant changes in data distribution policies of several key Earth observing satellites: Landsat, Cbers and the future Sentinels of GMES. GEO is also reflecting on solutions to transition research systems into operational observing systems and ensure their long-term sustainability. First, the current status of GEOSS implementation and these core activities of GEO will be presented. Then, examples of global data sets and information systems or services developed through GEOSS will be presented: - a high-resolution global digital elevation model (DEM) based on Aster data was released by Japan and the USA. In situ measurements are now being used to improve the model as well as the stacking procedure used to develop it; - the Supersites initiative ensures coordinated access to data and information on natural hazards in geologically active regions. In light of the recent tragedy in Haiti, this project created a dedicated web site regularly updated with maps of seismicity, tectonics, Coulomb stress changes, topography, real and synthetic interferograms, as well as damage maps, data, and space images. See http://supersites.unavco.org/haiti.php; - the global carbon observation and analysis system combines observations, reanalysis and product development to provide regional information on emission variations. It addresses the three components of the carbon cycle (atmosphere, land, ocean). The project includes the improvement of global networks of atmospheric CO2 observations, air-surface exchange flux networks, surface ocean CO2 and related marine biochemistry observations, as well as space-based measurements combining Sciamachy , Airs and the newly launched Japanese Gosat; - the Forest Carbon Tracking (FCT) project coordinates the acquisition of observations from multi-spectral and radar (X, C and L-band) satellites, their processing through different models and methodologies and their validation by in situ measurements in 7 selected countries. The aim is to demonstrate the feasibility of a global monitoring and verification system for carbon storage and change in forests. Data and results can be viewed on-line at www.geo-fct.org. This portal allows users to visualize the FCT National Demonstrators, the relevant validation sites and the inventory of the coordinated acquisitions of satellite and in-situ data. Maps and information resulting from the processing of the data will also be posted here when available.

  2. AN EMBEDDED SYSTEMS KERNEL

    E-print Network

    -Bit RISC . . . . . . . . . . . . . . . . . . . . 13 4.4 Atmel AT91 ARM Thumb . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 5 Hardware 17 5.1 The Malta system . . . . . . . . . . . . . . . . . . . . . . . 17 5.1.1 The Core

  3. Nervous System, Neurons, Nerves

    NSDL National Science Digital Library

    How does the nervous system work? It is a question that has engaged the minds of scientists, doctors, and others for centuries. The National Science Teachers Association (NSTA) has created this tour of the nervous system for teachers and students. First-time visitors can start with the Explore a Nerve Cell area, which goes over the membrane, nucleus, axon, dendrites, and the synapse in exquisite detail with interactive graphics. Moving on, The Basics area provides summaries of the operation of the nervous system and a rather illustrative area named Ouch! The site is rounded out by the Nervous Systems Explorations section, which has some nice simulations covering Brainstorms and Simple Reflexes.

  4. The Serotonergic System

    NSDL National Science Digital Library

    2009-04-14

    Serotonin is a neurotransmitter associated with a number of cognitive disorders, namely depression, bipolar disorder and schizophrenia. Professor Trevor Robbins explains how the serotoninergic system works.

  5. Photovoltaic systems perspective

    NASA Technical Reports Server (NTRS)

    Sutton, P. D.; Jones, G. J.

    1979-01-01

    This paper summarizes the elements of photovoltaic power system and clarifies the terminology currently used. The relationship of system efficiency and cost is described particularly for the Balance of Photovoltaic System (BOPS) area. The current status of the BOPS development activity is described. The photovoltaic systems terminology is found to be on the road to standardization. Power conditioning, energy storage, and support structure are found to be BOPS cost and/or efficiency drivers. Although the current BOPS activity has identified low-cost/high-efficiency components, further development work is necessary.

  6. Solar Electric System

    NASA Technical Reports Server (NTRS)

    1987-01-01

    Heat Pipe Technology, Inc. undertook the development of a PV system that could bring solar electricity to the individual home at reasonable cost. His system employs high efficiency PV modules plus a set of polished reflectors that concentrate the solar energy and enhance the output of the modules. Dinh incorporated a sun tracking system derived from space tracking technology. It automatically follows the sun throughout the day and turns the modules so that they get maximum exposure to the solar radiation, further enhancing the system efficiency.

  7. Systems Engineering Perspective

    E-print Network

    Selection Motor Operated Valves Compartment Arrangement Technical Manuals Remanufacturing Requirement Vendor Automatic fire suppression Fail set Four AC generators and three DC systems Multiple acceleration modes

  8. Remote Systems Design & Deployment

    SciTech Connect

    Bailey, Sharon A.; Baker, Carl P.; Valdez, Patrick LJ

    2009-08-28

    The Pacific Northwest National Laboratory (PNNL) was tasked by Washington River Protection Solutions, LLC (WRPS) to provide information and lessons learned relating to the design, development and deployment of remote systems, particularly remote arm/manipulator systems. This report reflects PNNL’s experience with remote systems and lays out the most important activities that need to be completed to successfully design, build, deploy and operate remote systems in radioactive and chemically contaminated environments. It also contains lessons learned from PNNL’s work experiences, and the work of others in the national laboratory complex.

  9. Safety system status monitoring

    SciTech Connect

    Lewis, J.R.; Morgenstern, M.H.; Rideout, T.H.; Cowley, P.J.

    1984-03-01

    The Pacific Northwest Laboratory has studied the safety aspects of monitoring the preoperational status of safety systems in nuclear power plants. The goals of the study were to assess for the NRC the effectiveness of current monitoring systems and procedures, to develop near-term guidelines for reducing human errors associated with monitoring safety system status, and to recommend a regulatory position on this issue. A review of safety system status monitoring practices indicated that current systems and procedures do not adequately aid control room operators in monitoring safety system status. This is true even of some systems and procedures installed to meet existing regulatory guidelines (Regulatory Guide 1.47). In consequence, this report suggests acceptance criteria for meeting the functional requirements of an adequate system for monitoring safety system status. Also suggested are near-term guidelines that could reduce the likelihood of human errors in specific, high-priority status monitoring tasks. It is recommended that (1) Regulatory Guide 1.47 be revised to address these acceptance criteria, and (2) the revised Regulatory Guide 1.47 be applied to all plants, including those built since the issuance of the original Regulatory Guide.

  10. All Systems are Go!

    NSDL National Science Digital Library

    Science NetLinks (AAAS; )

    2003-04-29

    In this online activity, a fictional character, Arnold is missing a number of body parts. Students are presented with a body system and a variety of organs. Students drag and drop all the organs that belong in that particular body system to Arnold's body. Once all four systems are complete, a clothed Arnold will appear.Note: if students drag in an organ that doesn't belong, all the organs pop out and students have to start that system over. This exercise can also be found at Kineticcity.com under mind games.

  11. Software Management System

    NASA Technical Reports Server (NTRS)

    1989-01-01

    Transportable Applications Environment (TAE), a Goddard Space Flight Center developed software management system, organizes multiple computer programs by providing user interface development tools and a stable framework for a system. It binds applications into an easily operated whole and interfaces with users. The program also lowers system development and software conversion costs by providing software and structures for commonly recurring user requirements. Originally developed to support image processing and remote sensing applications, TAE is now used in scientific analysis and defense systems, and as a teaching tool by private industry and government. A support office assists users. New development areas are anticipated.

  12. Dr. Dobb's Embedded Systems

    NSDL National Science Digital Library

    2002-01-01

    Embedded Systems is one of the specialized sites stemming from Dr. Dobb's Journal. In addition to serving as an excellent source of news and product development articles, the site is a portal to many other Internet resources on embedded system applications. Information tailored to specific programming languages, like C++, Java, and many others, is grouped into separate categories. There are also focuses on Linux-driven handhelds and other embedded operating systems. A list of toolkits for embedded system developers is also provided, which is especially useful for finding open source solutions.

  13. Validation of expert systems

    NASA Technical Reports Server (NTRS)

    Stachowitz, Rolf A.; Combs, Jacqueline B.

    1988-01-01

    The validation of expert systems (ESs) has only recently become an active AI research topic. Current approaches have concentrated mainly on the validation of rule properties of such systems. The efforts presented improves on current methods by also exploiting the structural and semantic information of such systems. To increase programmer productivity, more and more companies have begun exploiting the advent of AI technology by developing applications using ES shells or other AI-based high level program generators. The architecture, functionality, and future goals of Expert Systems Validation are described along with the features that have been implemented for and in Automated Reasoning Tool, the ES shell presented.

  14. Adaptive power system control

    SciTech Connect

    Manansala, E.C.

    1989-01-01

    This work presents a centralized control scheme applied to a power system. The scheme has adaptive characteristics which allow the controller to keep track of the changing power system operating point and to control nonlinear functions of state variables. Feedback to the controller is obtained from phasor measurements at chosen power system buses, generator field voltage measurements, and state estimators. Control effort is aimed at minimizing the oscillations and influencing the power system state trajectory through the control of linear and nonlinear functions of state variables during a power system disturbance. The main contributions of this dissertation are the simultaneous introduction and utilization of measurement based terms in the state and output equations in the derivation and implementation of the control law, the study of limits on controller performance as the state residual vector becomes very large, and the simulation of the performance of local state estimators to prove the need for faster phasor measurement systems. The test system is a hypothetical 39-Bus AC power system consisting of typical components which have been sufficiently modelled for the simulation of power system performance in a dynamic stability study.

  15. Food Service System

    NASA Technical Reports Server (NTRS)

    1992-01-01

    The 3M Food Service System 2 employs a "cook/chill" concept for serving food in hospitals. The system allows staff to prepare food well in advance, maintain heat, visual appeal and nutritional value as well as reducing operating costs. The integral heating method, which keeps hot foods hot and cold foods cold, was developed by 3M for the Apollo Program. In the 1970s, the company commercialized the original system and in 1991, introduced Food Service System 2. Dishes are designed to resemble those used at home, and patient satisfaction has been high.

  16. Apollo 14 food system.

    NASA Technical Reports Server (NTRS)

    Smith, M. C., Jr.; Huber, C. S.; Heidelbaugh, N. D.

    1971-01-01

    The program for improving foods for use during space flights consists of introducing new foods and food-handling techniques on each successive manned space flight. Because of this continuing improvement program, the Apollo 14 food system was the most advanced and sophisticated food system to be used in the U.S. space program. The food system used during the Apollo 14 mission and recent space-food-system advances are described and discussed in regard to their usefulness for future manned space flights.

  17. Generic Observatory Control System

    NASA Astrophysics Data System (ADS)

    Pearson, M.; Ritchie, I.

    2013-09-01

    EOS has developed systems over many years to support research into Space Situational Awareness (SSA) and Satellite Laser Ranging (SLR). These systems are based upon a software architecture that simplifies systems development with the goals of supporting multiple missions at low-cost. To date the software architecture has supported local, remote and international operation of the Space Research Centre facilities at Mt. Stromlo, Australia in both manual and automatic modes. The design objectives of this software architecture are discussed in the context of future development paths aimed at lowering systems integration costs even further, and enabling participation in international SSA networks.

  18. Expert system technology

    NASA Technical Reports Server (NTRS)

    Prince, Mary Ellen

    1987-01-01

    The expert system is a computer program which attempts to reproduce the problem-solving behavior of an expert, who is able to view problems from a broad perspective and arrive at conclusions rapidly, using intuition, shortcuts, and analogies to previous situations. Expert systems are a departure from the usual artificial intelligence approach to problem solving. Researchers have traditionally tried to develop general modes of human intelligence that could be applied to many different situations. Expert systems, on the other hand, tend to rely on large quantities of domain specific knowledge, much of it heuristic. The reasoning component of the system is relatively simple and straightforward. For this reason, expert systems are often called knowledge based systems. The report expands on the foregoing. Section 1 discusses the architecture of a typical expert system. Section 2 deals with the characteristics that make a problem a suitable candidate for expert system solution. Section 3 surveys current technology, describing some of the software aids available for expert system development. Section 4 discusses the limitations of the latter. The concluding section makes predictions of future trends.

  19. Evaluating intensified camera systems

    SciTech Connect

    S. A. Baker

    2000-07-01

    This paper describes image evaluation techniques used to standardize camera system characterizations. Key areas of performance include resolution, noise, and sensitivity. This team has developed a set of analysis tools, in the form of image processing software used to evaluate camera calibration data, to aid an experimenter in measuring a set of camera performance metrics. These performance metrics identify capabilities and limitations of the camera system, while establishing a means for comparing camera systems. Analysis software is used to evaluate digital camera images recorded with charge-coupled device (CCD) cameras. Several types of intensified camera systems are used in the high-speed imaging field. Electro-optical components are used to provide precise shuttering or optical gain for a camera system. These components including microchannel plate or proximity focused diode image intensifiers, electro-static image tubes, or electron-bombarded CCDs affect system performance. It is important to quantify camera system performance in order to qualify a system as meeting experimental requirements. The camera evaluation tool is designed to provide side-by-side camera comparison and system modeling information.

  20. Multidisciplinary System Reliability Analysis

    NASA Technical Reports Server (NTRS)

    Mahadevan, Sankaran; Han, Song; Chamis, Christos C. (Technical Monitor)

    2001-01-01

    The objective of this study is to develop a new methodology for estimating the reliability of engineering systems that encompass multiple disciplines. The methodology is formulated in the context of the NESSUS probabilistic structural analysis code, developed under the leadership of NASA Glenn Research Center. The NESSUS code has been successfully applied to the reliability estimation of a variety of structural engineering systems. This study examines whether the features of NESSUS could be used to investigate the reliability of systems in other disciplines such as heat transfer, fluid mechanics, electrical circuits etc., without considerable programming effort specific to each discipline. In this study, the mechanical equivalence between system behavior models in different disciplines are investigated to achieve this objective. A new methodology is presented for the analysis of heat transfer, fluid flow, and electrical circuit problems using the structural analysis routines within NESSUS, by utilizing the equivalence between the computational quantities in different disciplines. This technique is integrated with the fast probability integration and system reliability techniques within the NESSUS code, to successfully compute the system reliability of multidisciplinary systems. Traditional as well as progressive failure analysis methods for system reliability estimation are demonstrated, through a numerical example of a heat exchanger system involving failure modes in structural, heat transfer and fluid flow disciplines.

  1. System Driven Workarounds

    NASA Technical Reports Server (NTRS)

    Connell, Linda; Wichner, David; Jakey, Abegael Marie

    2013-01-01

    The Aviation Safety Reporting System (ASRS) in a partnership between the National Aeronautics and Space Administration (NASA), the Federal Aviation Administration (FAA), participating carriers, and labor organizations. It is designed to improve the National Airspace System by collecting and studying reports detailing unsafe conditions and events in the aviation industry. Employees are able to report safety issues or concerns with confidentiality and without fear of discipline. Safety reports highlighting system driven workarounds for the aviation community highlight the human workaround for the complex aviation system.

  2. Modular authentication systems

    SciTech Connect

    Johnson, C.S.; Hale, W.R.; Mangan, D.L.

    1990-01-01

    Authentication system are required in situations where it is not necessary to protect the contents of the information but to verify the transfer of the information. The Modular Video Authentication System (MVAS) has been developed by Sandia National Laboratories to provide authentication of video signals in already-wired systems. The video authentication technique uses similar microprocessor circuitry at the transmission point, and at the receiving point, to select sample points from the video images for comparison. If a significantly different image was substituted, the comparison would fail at a number of points and the video image would not be authenticated. A similar system has been developed by Sandia for authenticating digital data transmissions. This system is used to determine whether any data alternation or substitution has occurred between the point of the data transmission and the point of the data reception. As with the MVAS, authentication equipment is required at both the transmission and receiving locations for the system operation. This paper describes both the video authentication system and the digital data authentication system, how authentication is accomplished, and how the systems interface with existing hardware. 3 figs.

  3. Intelligent flight control systems

    NASA Technical Reports Server (NTRS)

    Stengel, Robert F.

    1993-01-01

    The capabilities of flight control systems can be enhanced by designing them to emulate functions of natural intelligence. Intelligent control functions fall in three categories. Declarative actions involve decision-making, providing models for system monitoring, goal planning, and system/scenario identification. Procedural actions concern skilled behavior and have parallels in guidance, navigation, and adaptation. Reflexive actions are spontaneous, inner-loop responses for control and estimation. Intelligent flight control systems learn knowledge of the aircraft and its mission and adapt to changes in the flight environment. Cognitive models form an efficient basis for integrating 'outer-loop/inner-loop' control functions and for developing robust parallel-processing algorithms.

  4. TROPIX Power System Architecture

    NASA Technical Reports Server (NTRS)

    Manner, David B.; Hickman, J. Mark

    1995-01-01

    This document contains results obtained in the process of performing a power system definition study of the TROPIX power management and distribution system (PMAD). Requirements derived from the PMADs interaction with other spacecraft systems are discussed first. Since the design is dependent on the performance of the photovoltaics, there is a comprehensive discussion of the appropriate models for cells and arrays. A trade study of the array operating voltage and its effect on array bus mass is also presented. A system architecture is developed which makes use of a combination of high efficiency switching power convertors and analog regulators. Mass and volume estimates are presented for all subsystems.

  5. Satellite communications system 'Tyulpan'

    NASA Astrophysics Data System (ADS)

    Tchuyan, R. K.; Tarasov, E. V.; Belousov, A. P.; Balyk, V. M.; Kovtunenko, V. M.; Morozov, V. A.; Andreev, V. A.; v'yunenko, K. A.

    1993-10-01

    A concept of the satellite communication system called 'Tyulpan' (because or its tulip-resembling shape) is considered. This conception envisages the use of six satellites-retranslators installed on high-latitude elliptic orbits. Such a system can provide the communication for mean- and high-latitude region of Europe, Asia, and America. For the communication, super small ground stations of 0.4 m in diameter can be used. In the development of system conception, the already existing technical solutions and possibility of conversion or existing installations of military destination were taken into account. Therefore, the system considered can be realized at the earliest possible date.

  6. The Solar System

    NSDL National Science Digital Library

    This is a lesson about the temperature on differnt planets in our solar system. Learners will explore the planetary temperature system. They explore how each aspect (e.g., mass, temperature and gravity) influences the system and the consequences of disrupting that system. The lesson models scientific inquiry using the 5E instructional model and includes teacher notes, prerequisite concepts, common misconceptions, student journal and reading. This is lesson 8 in the Astro-Venture Astronomy Unit. The lessons are designed for educators to use in conjunction with the Astro-Venture multimedia modules.

  7. Cockpit control system

    NASA Technical Reports Server (NTRS)

    Lesnewski, David; Snow, Russ M.; Paufler, Dave; Schnieder, George; Athousake, Roxanne; Combs, Lisa

    1993-01-01

    The purpose of this project is to provide a detail design for the cockpit control system of the Viper PFT. The statement of work for this project requires provisions for control of the ailerons, elevator, rudder, and elevator trim. The system should provide adjustment for pilot stature, rigging, and maintenance. MIL-STD-1472 is used as a model for human factors criterion. The system is designed to the pilot limit loading outlined in FAR part 23.397. The general philosophy behind this design is to provide a simple, reliable control system which will withstand the daily abuse that is experienced in the training environment without excessive cost or weight penalties.

  8. Noisy Nonlinear Systems

    SciTech Connect

    Dr. Katja Lindenberg

    2005-11-20

    During the one-year period 2004-2005 our work continued to focus on nonlinear noisy systems, with special attention to spatially extended systems. There is a history of many decades of research in the sciences and engineering on the behavior of noninear noisy systems, but only in the past ten years or so has a theoretical understanding of spatially extended systems begun to emerge. This has been the outcome of a symbiosis of numerical simulations not possible until recently, laboratory experiments, and new analytic methods.

  9. Security System Software

    NASA Technical Reports Server (NTRS)

    1993-01-01

    C Language Integration Production System (CLIPS), a NASA-developed expert systems program, has enabled a security systems manufacturer to design a new generation of hardware. C.CURESystem 1 Plus, manufactured by Software House, is a software based system that is used with a variety of access control hardware at installations around the world. Users can manage large amounts of information, solve unique security problems and control entry and time scheduling. CLIPS acts as an information management tool when accessed by C.CURESystem 1 Plus. It asks questions about the hardware and when given the answer, recommends possible quick solutions by non-expert persons.

  10. Program/system update

    SciTech Connect

    Babb, R.G. II

    1982-01-01

    A great deal of effort has been devoted to finding and improving methods of designing programs and specifying system requirements. This paper presents an introduction to a new, unified approach to program and system design. Program/system design methods are based on a non-Von Neumann model of computation in which programs are viewed as being made up of numerous data-coupled, data-activated processing units. After an introduction to program/system notation and execution semantics, the techniques are illustrated by a COBOL program for updating a master file. 12 references.

  11. A Formal Model for a System’s Attack Surface

    Microsoft Academic Search

    Pratyusa K. Manadhata

    \\u000a Practical software security metrics and measurements are essential for secure software development. In this chapter, we introduce\\u000a the measure of a software system’s attack surface as an indicator of the system’s security. The larger the attack surface, the more insecure the system. We formalize the notion\\u000a of a system’s attack surface using an I\\/O automata model of the system and

  12. NUMBER SYSTEMS 19.1 The Decimal System

    E-print Network

    Smith, Marc L.

    NUMBER SYSTEMS 19.1 The Decimal System 19.2 The Binary System 19.3 Converting between Binary;19-2 CHAPTER 19 / NUMBER SYSTEMS 19.1 THE DECIMAL SYSTEM In everyday life we use a system based on decimal digits (0, 1, 2, 3, 4, 5, 6, 7, 8, 9) to represent numbers and refer to the system as the decimal system

  13. Autonomic Nervous System and Immune System Interactions

    PubMed Central

    Kenney, MJ; Ganta, CK

    2015-01-01

    The present review assesses the current state of literature defining integrative autonomic-immune physiological processing, focusing on studies that have employed electrophysiological, pharmacological, molecular biological and central nervous system experimental approaches. Central autonomic neural networks are informed of peripheral immune status via numerous communicating pathways, including neural and non-neural. Cytokines and other immune factors affect the level of activity and responsivity of discharges in sympathetic and parasympathetic nerves innervating diverse targets. Multiple levels of the neuraxis contribute to cytokine-induced changes in efferent parasympathetic and sympathetic nerve outflows, leading to modulation of peripheral immune responses. The functionality of local sympathoimmune interactions depends on the microenvironment created by diverse signaling mechanisms involving integration between sympathetic nervous system neurotransmitters and neuromodulators; specific adrenergic receptors; and the presence or absence of immune cells, cytokines and bacteria. Functional mechanisms contributing to the cholinergic anti-inflammatory pathway likely involve novel cholinergic-adrenergic interactions at peripheral sites, including autonomic ganglion and lymphoid targets. Immune cells express adrenergic and nicotinic receptors. Neurotransmitters released by sympathetic and parasympathetic nerve endings bind to their respective receptors located on the surface of immune cells and initiate immune-modulatory responses. Both sympathetic and parasympathetic arms of the autonomic nervous system are instrumental in orchestrating neuroimmune processes, although additional studies are required to understand dynamic and complex adrenergic-cholinergic interactions. Further understanding of regulatory mechanisms linking the sympathetic nervous, parasympathetic nervous, and immune systems is critical for understanding relationships between chronic disease development and immune-associated changes in autonomic nervous system function. PMID:24944034

  14. An overview of systems studies of automated highway systems

    Microsoft Academic Search

    James G. Bender

    1991-01-01

    A comprehensive systems study of the factors influencing the design, development, and deployment of an intelligent vehicle highway system is summarized. Candidate system concepts and system implementation strategies that have a high potential for successful deployment with a minimum of disruptive influence and cost impact on the current highway system are identified and analyzed. A system concept is recommended together

  15. IEED system: A new kind of Automotive electrical system

    Microsoft Academic Search

    Zhang Xinfeng; Yang Diange; Lian Xiaomin; Lu liang; Xuewen

    2008-01-01

    A new kind of automotive electrical system is proposed, which named IEED system. It is a completely distributed system with only intelligent electrical & electronic device (IEED) in it. The systempsila features is described and key IEEDs in system are also presented. The system prototype was developed and experimented. Results showed that IEED system is feasible and cost effective.

  16. Conversion Between Different Number Systems Positional number systems

    E-print Network

    Simonson, Shai

    Conversion Between Different Number Systems Positional number systems Our decimal number system digits are used in both numbers. (Although we are accustomed to our decimal number system, which of each position correspond to powers of the base of the number system. So for our decimal number system

  17. Detection system for film

    NASA Astrophysics Data System (ADS)

    Wang, Jin-jiang; Liu, Wen-yao; Ren, Li; Mo, Xu-tao; Wang, Bing-zhen

    2005-12-01

    Film is one kind of important record median. Its quality will affect image quality directly. So, it is necessary to study how to assure its quality. Because the situation of film production in dark room, normal detect method could not satisfied the film. In order to avoid to damage film, an infrared detect system is studied. This system is design to set at the position of spreader head. If the defect of film could be found at this position, the beginner of film production line, worker could tread with it in time and reduce waster. The infrared detect system include two sub systems. The two sub system need to detect one position all the time. One sub system is used to detect if there is defect. One CCD camera captures film image. The film image will be monitor by worker through screen. The screen should be set in light room. Another sub system is composed of object lens, image intensifier micro-channel plate and eye lens. If worker find defect from screen, he will inform another worker who worker in dark room. Another worker could find the defect through image intensifier system, and treat with it. The communication method between two workers is sound, not alarm light, because there is dark room. All of the two sub systems use infrared light as light source. The wavelength of light source is 940 nm, which is safe to film. This system is designed for Lekai, the biggest film company of China. This system could find detect early and help worker to deal with it on site, because the detect position is the starting of film production line.

  18. SIMPLE NERVOUS SYSTEMS AND BEHAVIOR

    E-print Network

    Cooper, Brenton G.

    CHAPTER 5: SIMPLE NERVOUS SYSTEMS AND BEHAVIOR #12;Video Octopus intelligence http with no nervous system Invertebrates with nervous system Vertebrates Radial symmetry Bilateral symmetry #12.) Simple nervous systems: Invertebrates #12;The neuron Dendrites Soma Nucleus Myelin Axon Axon terminal

  19. System Thinking and Food Safety

    E-print Network

    System Thinking and Food Safety John Helferich SDM Systems Thinking · The System and its Boundaries · Food Safety Control ­Current - Linear ­Proposed ­ Complex System · The Research QuesKons 10/21/11 2 #12;What is "Food Safety

  20. Computer Systems and Network Manager

    E-print Network

    Computer Systems and Network Manager Fort Collins, Colorado POSITION A Computers Systems activities. RESPONSIBILITIES The successful candidate will perform computer systems and network administration, including computer hardware, systems software, applications software, and all configurations

  1. Introduction to the Endocrine System

    MedlinePLUS

    ... Resource Educational Infographics View An Introduction to the Endocrine System The endocrine system controls the way your body ... your body functions properly. The Glands of the Endocrine System Your endocrine system is made of many glands ...

  2. Centrifugal pump fuel system

    Microsoft Academic Search

    M. E. McGlone; L. J. Larkins; R. O. Johnson; K. A. Moeller

    1993-01-01

    A centrifugal pump fuel system for an engine driven fuel pump for an aircraft gas turbine engine is described comprising: a centrifugal pump having at constant speed rising head\\/flow characteristic at low flows; a plumbing system receiving flow from the pump, and having at least one control valve located down stream of and defining a discrete volume of the plumbing

  3. Custom uniform source system

    NASA Technical Reports Server (NTRS)

    Balcom, John L.

    1994-01-01

    The purpose and scope of this final report is to provide information on the Custom Uniform Source System (CSTM-USS-4000). The report includes documentation and summaries of the results for the work performed under the contract. The Annex contain laboratory test findings, photographs, and drawings of the sphere system.

  4. Technology reviews: Glazing systems

    SciTech Connect

    Schuman, J.; Rubinstein, F.; Papamichael, K.; Beltran, L.; Lee, E.S.; Selkowitz, S.

    1992-09-01

    We present a representative review of existing, emerging, and future technology options in each of five hardware and systems areas in envelope and lighting technologies: lighting systems, glazing systems, shading systems, daylighting optical systems, and dynamic curtain wall systems. The term technology is used here to describe any design choice for energy efficiency, ranging from individual components to more complex systems to general design strategies. The purpose of this task is to characterize the state of the art in envelope and lighting technologies in order to identify those with promise for advanced integrated systems, with an emphasis on California commercial buildings. For each technology category, the following activities have been attempted to the extent possible: Identify key performance characteristics and criteria for each technology; determine the performance range of available technologies; identify the most promising technologies and promising trends in technology advances; examine market forces and market trends; and develop a continuously growing in-house database to be used throughout the project. A variety of information sources have been used in these technology characterizations, including miscellaneous periodicals, manufacturer catalogs and cut sheets, other research documents, and data from previous computer simulations. We include these different sources in order to best show the type and variety of data available, however publication here does not imply our guarantee of these data. Within each category, several broad classes are identified, and within each class we examine the generic individual technologies that fag into that class.

  5. Custom uniform source system

    NASA Astrophysics Data System (ADS)

    Balcom, John L.

    1994-02-01

    The purpose and scope of this final report is to provide information on the Custom Uniform Source System (CSTM-USS-4000). The report includes documentation and summaries of the results for the work performed under the contract. The Annex contain laboratory test findings, photographs, and drawings of the sphere system.

  6. The Urdu Writing System.

    ERIC Educational Resources Information Center

    Bright, William; Khan, Saeed A.

    This booklet describes the Urdu writing system, and is part of a series of teaching materials for teaching Urdu. A general introduction outlining the main characteristics of the system is followed by a presentation of the alphabet. Letters symbolizing the same sound are then discussed, followed by the vowels. Non-connectors, or letters not having…

  7. Purge water management system

    DOEpatents

    Cardoso-Neto, J.E.; Williams, D.W.

    1995-01-01

    A purge water management system is described for effectively eliminating the production of purge water when obtaining a groundwater sample from a monitoring well. In its preferred embodiment, the purge water management system comprises an expandable container, a transportation system, and a return system. The purge water management system is connected to a wellhead sampling configuration, typically permanently installed at the well site. A pump, positioned with the monitoring well, pumps groundwater through the transportation system into the expandable container, which expands in direct proportion with volume of groundwater introduced, usually three or four well volumes, yet prevents the groundwater from coming into contact with the oxygen in the air. After this quantity of groundwater has been removed from the well, a sample is taken from a sampling port, after which the groundwater in the expandable container can be returned to the monitoring well through the return system. The purge water management system prevents the purge water from coming in contact with the outside environment, especially oxygen, which might cause the constituents of the groundwater to oxidize. Therefore, by introducing the purge water back into the monitoring well, the necessity of dealing with the purge water as a hazardous waste under the Resource Conservation and Recovery Act is eliminated.

  8. Equipment management system (EMS)

    Microsoft Academic Search

    T. Yurtsever; M. Comerford

    1995-01-01

    Equipment Management System (EMS) is a software tool used to monitor and track equipment states, restrictions and PM schedules in real time. EMS has been designed and customized to support the MOS-2 die production facility. The system provides graphical representation of the entire factory. Color coded icons represent equipment's current state (i.e. qualification, production, unscheduled maintenance, etc.). Preventative maintenance schedules

  9. Battery voltage regulation system

    Microsoft Academic Search

    N. Mayumi; H. Kato; H. Matsuhashi

    1986-01-01

    A battery voltage regulating system is described for an automotive vehicle having a battery, an alternator driven by an internal combustion engine mounted on the vehicle and generating an alternating current, and a full-wave rectifier for rectifying the alternating current to charge the battery. The system consists of: an operational amplifier connected to the battery for comparing a battery voltage

  10. Battery heating system

    Microsoft Academic Search

    C. Silvertown; W. Sinclair

    1980-01-01

    A battery heating system is comprised of a number of storage batteries and an alternator driven by a variable speed prime mover connected to supply ac heating current to the batteries. The system is arranged so that the ac current is substantially constant over the working speed range of the prime mover.

  11. Solar electricity storage systems

    Microsoft Academic Search

    J. Jensen; C. Perram

    1980-01-01

    Possible methods for the storage of solar-energy-generated electricity are reviewed. Attention is given to mechanical systems, including elevated weights, pumped water, compressed air, springs and flywheels, electric and magnetic field storage in a capacitor, electromagnet or superconducting coil, and chemical storage systems, including the electrolyzer hydrogen fuel cell and secondary electric storage batteries. Consideration of the advantages and disadvantages of

  12. The vestibular system

    NASA Technical Reports Server (NTRS)

    Graybiel, A.

    1973-01-01

    The end organs, central nervous system connections, and static and dynamic characteristics of the vestibular system are presented. Vestibular servation in man and vestibular side effect prevention from space missions involving artificial gravity generation are also considered. Vestibular models and design criteria for rotating space vehicles are appended.

  13. Intellectual Property Access Systems

    Microsoft Academic Search

    Reiko Aoki; Aaron Schiff

    2007-01-01

    This paper reviews and compares patent pools and intellectual property clearinghouses as alternative systems for increasing the efficiency of access to intellectual property. These systems improve economic efficiency in downstream research and development by economizing on search and transaction costs faced by potential licensees, and by mitigating externalities among owners of complementary intellectual property that lead to excessively high license

  14. Solar energy reflecting system

    Microsoft Academic Search

    Polley

    1978-01-01

    A solar energy reflecting system is disclosed which can modify its reflector configuration in accordance with the movement of the sun across the sky. The system includes a circular dish-like housing with upper and lower circular hoops in spaced relationship within the housing which can be displaced relative to each other. A series of reflector panels are sequentially spaced around

  15. Overview of locking systems

    SciTech Connect

    Gee, K.T.; Scott, S.H.; Wilde, M.G. [Sandia National Labs., Albuquerque, NM (United States); Highland, S.E. [Albuquerque Safe Co., Albuquerque, NM (United States)

    1993-12-01

    The purpose of this document is to present technical information that should be useful for understanding and applying locking systems for physical protection and control. There are major sections on hardware for locks, vaults, safes, and security containers. Other topics include management of lock systems and safety considerations. This document also contains notes on standards and specifications and a glossary.

  16. Multipurpose hyperspectral imaging system

    Technology Transfer Automated Retrieval System (TEKTRAN)

    A hyperspectral imaging system of high spectral and spatial resolution that incorporates several innovative features has been developed to incorporate a focal plane scanner (U.S. Patent 6,166,373). This feature enables the system to be used for both airborne/spaceborne and laboratory hyperspectral i...

  17. Linear systems and normality

    Microsoft Academic Search

    Z. Kotulski; K. Sobczyk

    1981-01-01

    This paper is concerned with responses of linear systems to non-Gaussian random excitation and with the measurement of the departure of the responses from Gaussian behavior. First, we show the classical Rosenblatt result and its nonapplicability to the most popular practical systems described by differential equations of first and second order. Then, using a simple measure of departure from normality

  18. COMPARING STRAWBERRY PRODUCTION SYSTEMS

    Technology Transfer Automated Retrieval System (TEKTRAN)

    We previously reported on a new approach to growing strawberries in the mid-Atlantic region, developed at the USDA-ARS Fruit Laboratory at Beltsville, Maryland. This Advanced Matted Row system is an effort to incorporate beneficial aspects of both annual hill and traditional matted row systems, and...

  19. Material Fatigue Testing System

    NASA Technical Reports Server (NTRS)

    Gilley, P. J. (inventor)

    1973-01-01

    A system for cyclicly applying a varying load to a material under test is described. It includes a load sensor which senses the magnitude of load being applied to a material, and, upon sensing a selected magnitude of loading, causes the load to be maintained for a predetermined time and then cause the system to resume cyclical loading.

  20. Offshore wind energy systems

    Microsoft Academic Search

    P. Musgrove

    1978-01-01

    Wind energy systems deployed in the shallow but windy waters of the southern North Sea have the potential to provide more than 20% of UK electricity needs. With existing experience of windmills, and of aircraft and offshore structures, such wind energy systems could be developed within a relatively short timescale. A preliminary assessment of the economics of offshore wind energy

  1. Helicopter auxiliary energy system

    SciTech Connect

    Logan, A.H.; Graves, J.D.

    1986-09-02

    An apparatus in a rotary wing aircraft is described for providing auxiliary energy in an autorotation mode, the rotary wing aircraft including a rotor system, a main propulsion engine, and a drive shaft connecting the main propulsion engine with the rotor system.

  2. Experiences in Systemic Change

    ERIC Educational Resources Information Center

    Thompson, Scott; Clem, Joe; Battino, Wendy; Richter, Kurt; Reigeluth, Charles; Doll, Marcelle; Moore, Julie; Hoo, Janet; Malopinsky, Larissa V.

    2006-01-01

    This section describes the systemic change experiences in Norfolk Public Schools, Chugach School District, Indianapolis Metropolitan School District of Decatur Township, Ditmas Educational Complex, Georgia Systemic Teacher Education Program, Sun Microsystems, and Azerbaijan. It provides a description of the change process and discusses the…

  3. Narrowband spread spectrum systems

    Microsoft Academic Search

    K. H. Annecke; M. Ottka

    1984-01-01

    The available military radio frequency bands are covered very densely by the already existing conventional systems and therefore the application of bandwidth widening procedures as antijam measures will be allowed only with small spreading factors within these RF-bands. The problems arising from the random code selection for spread spectrum systems with small spreading factors are discussed. The calculations show the

  4. Bird Song System

    NSDL National Science Digital Library

    Dr. William Grisham, Ph.D

    Image library of songbird nuclei allowing comparisons examining sex differences and effects of various doses of estrogen given to females in posthatch development. Bird Song System is an instructional tool for teaching neurophysiology that requires only a computer. Bird Song System is available for free, along with student and instructor tutorials.

  5. BATSE spectroscopy analysis system

    NASA Technical Reports Server (NTRS)

    Schaefer, Bradley E.; Bansal, Sandhia; Basu, Anju; Brisco, Phil; Cline, Thomas L.; Friend, Elliott; Laubenthal, Nancy; Panduranga, E. S.; Parkar, Nuru; Rust, Brad

    1992-01-01

    The Burst and Transient Source Experiment (BATSE) Spectroscopy Analysis System (BSAS) is the software system which is the primary tool for the analysis of spectral data from BATSE. As such, Guest Investigators and the community as a whole need to know its basic properties and characteristics. Described here are the characteristics of the BATSE spectroscopy detectors and the BSAS.

  6. Heterodyne laser diagnostic system

    DOEpatents

    Globig, Michael A. (Antioch, CA); Johnson, Michael A. (Pleasanton, CA); Wyeth, Richard W. (Livermore, CA)

    1990-01-01

    The heterodyne laser diagnostic system includes, in one embodiment, an average power pulsed laser optical spectrum analyzer for determining the average power of the pulsed laser. In another embodiment, the system includes a pulsed laser instantaneous optical frequency measurement for determining the instantaneous optical frequency of the pulsed laser.

  7. Filter service system

    DOEpatents

    Sellers, Cheryl L. (Peoria, IL); Nordyke, Daniel S. (Arlington Heights, IL); Crandell, Richard A. (Morton, IL); Tomlins, Gregory (Peoria, IL); Fei, Dong (Peoria, IL); Panov, Alexander (Dunlap, IL); Lane, William H. (Chillicothe, IL); Habeger, Craig F. (Chillicothe, IL)

    2008-12-09

    According to an exemplary embodiment of the present disclosure, a system for removing matter from a filtering device includes a gas pressurization assembly. An element of the assembly is removably attachable to a first orifice of the filtering device. The system also includes a vacuum source fluidly connected to a second orifice of the filtering device.

  8. Space lab system analysis

    NASA Technical Reports Server (NTRS)

    Rives, T. B.; Ingels, F. M.

    1988-01-01

    An analysis of the Automated Booster Assembly Checkout System (ABACS) has been conducted. A computer simulation of the ETHERNET LAN has been written. The simulation allows one to investigate different structures of the ABACS system. The simulation code is in PASCAL and is VAX compatible.

  9. Management Systems in Education.

    ERIC Educational Resources Information Center

    Wagner, Ivan D.

    Management systems have been adapted for educational administration in response to the need for quality of educational opportunity, collective bargaining, school district consolidation, decreasing enrollments, accountability laws, limited financial resources, and participatory decision-making. Management systems adapted, not adopted, from business…

  10. Open Source CRM Systems

    Microsoft Academic Search

    Kaderják Gyula; Simon András

    The object of this study is a comprehensive review of the open source customer relationship management (CRM) systems. The open source softwares have become one of the most important trends in the software industry recently. Similarly, the CRM systems are applied more increasingly in several fields of economy. The CRM is not merely a subsequent software technology and application in

  11. Computational systems biology

    Microsoft Academic Search

    Hiroaki Kitano

    2002-01-01

    To understand complex biological systems requires the integration of experimental and computational research - in other words a systems biology approach. Computational biology, through pragmatic modelling and theoretical exploration, provides a powerful foundation from which to address critical scientific questions head-on. The reviews in this Insight cover many different aspects of this energetic field, although all, in one way or

  12. Body Defenses Immune System

    E-print Network

    Cochran-Stafira, D. Liane

    1 1 Body Defenses Immune System Part 2 2 Adaptive Immune Defenses When innate defenses have failed defenses respond to antigens Molecules the immune system recognizes as foreign to the body. Adaptive strongly to the body's own cells are eliminated in order to minimize an immune response against the body

  13. Swine immune system

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Probably no area of veterinary medicine has seen a greater explosion in knowledge then the immune system and its implications in disease and vaccination. In this chapter on the Swine Immune System for the 10th Edition of Diseases of Swine we expand on the information provided in past editions by in...

  14. Open Rating Systems

    Microsoft Academic Search

    R. Guha

    In the offline world, we look to the people we trust and those they trust for reliable information. In this paper, we present a compu- tational model of this phenomenon and show how it can be used to identify high quality content in an Open Rating System, i.e., a system in which any user can rate content. We present a

  15. Earth as a System

    NSDL National Science Digital Library

    WGBH/Boston

    This short video uses animated imagery from satellite remote sensing systems to illustrate that Earth is a complex, evolving body characterized by ceaseless change. Adapted from NASA, this visualization helps explain why understanding Earth as an integrated system of components and processes is essential to science education.

  16. Complex systems: Network thinking

    Microsoft Academic Search

    Melanie Mitchell

    2006-01-01

    Like arti?cial intelligence in its earlier years, the ?eld of complex systems has received a lot of press in the last two decades, both positive and negative, breezily hyped and unjustly derogatory. As in the early years of AI, complex systems scientists have at times made promises and set up expectations that are hard for any young science to ful?ll.

  17. Astrophysics data system

    Microsoft Academic Search

    F. Giovane

    1992-01-01

    The Astrophysics Data System is intended to make NASA's current and future data holdings more broadly and efficiently accessible, and make the data itself more interpretable. It is to provide a common information system infrastructure for science analysis which reduces duplication of effort while increasing the scientific return from the various astrophysical missions. To achieve these goals the ADS has

  18. Multipurpose smart hydrogel systems

    Microsoft Academic Search

    Yu Samchenko; Z. Ulberg; O. Korotych

    2011-01-01

    This paper represents the review of the last investigations in the field of smart polymeric hydrogels and our contribution to this matter. New hydrogel systems and nanocomposites based on acrylic monomers (acrylamide, acrylonitrile, acrylic acid, N-isopropylacrylamide etc.) with incorporated nanosized colloidal silver, hydroxyapatite and carbon nanotubes with a new set of properties have been obtained and examined. These systems can

  19. Ant System Thomas Stutzle

    E-print Network

    Hoos, Holger H.

    ¡£¢ ­ ¤¦¥ Ant System Thomas St¨utzle § Universit´e Libre de Bruxelles IRIDIA Brussels, Belgium Ant System, the first Ant Colony Optimization algorithm, showed to be a viable method for attacking Problem. To show that Ant Colony Opti- mization algorithms could be good alternatives to existing

  20. Academic Research Integration System

    ERIC Educational Resources Information Center

    Surugiu, Iula; Velicano, Manole

    2008-01-01

    This paper comprises results concluding the research activity done so far regarding enhanced web services and system integration. The objective of the paper is to define the software architecture for a coherent framework and methodology for enhancing existing web services into an integrated system. This document presents the research work that has…