Lunar rover navigation concepts

NASA Astrophysics Data System (ADS)

Burke, James D.

1993-01-01

With regard to the navigation of mobile lunar vehicles on the surface, candidate techniques are reviewed and progress of simulations and experiments made up to now are described. Progress that can be made through precursor investigations on Earth is considered. In the early seventies the problem was examined in a series of relevant tests made in the California desert. Meanwhile, Apollo rovers made short exploratory sorties and robotic Lunokhods traveled over modest distances on the Moon. In these early missions some of the required methods were demonstrated. The navigation problem for a lunar traverse can be viewed in three parts: to determine the starting point with enough accuracy to enable the desired mission; to determine the event sequence required to reach the site of each traverse objective; and to redetermine actual positions enroute. The navigator's first tool is a map made from overhead imagery. The Moon was almost completely photographed at moderate resolution by spacecraft launched in the sixties, but that data set provides imprecise topographic and selenodetic information. Therefore, more advanced orbital missions are now proposed as part of a resumed lunar exploration program. With the mapping coverage expected from such orbiters, it will be possible to use a combination of visual landmark navigation and external radio and optical references (Earth and Sun) to achieve accurate surface navigation almost everywhere on the near side of the Moon. On the far side and in permanently dark polar areas, there are interesting exploration targets where additional techniques will have to be used.

Telecommunications, navigation and information management concept overview for the Space Exploration Initiative program

NASA Technical Reports Server (NTRS)

Bell, Jerome A.; Stephens, Elaine; Barton, Gregg

1991-01-01

An overview is provided of the Space Exploration Initiative (SEI) concepts for telecommunications, information systems, and navigation (TISN), and engineering and architecture issues are discussed. The SEI program data system is reviewed to identify mission TISN interfaces, and reference TISN concepts are described for nominal, degraded, and mission-critical data services. The infrastructures reviewed include telecommunications for robotics support, autonomous navigation without earth-based support, and information networks for tracking and data acquisition. Four options for TISN support architectures are examined which relate to unique SEI exploration strategies. Detailed support estimates are given for: (1) a manned stay on Mars; (2) permanent lunar and Martian settlements; short-duration missions; and (4) systematic exploration of the moon and Mars.

Wake Vortex Advisory System (WakeVAS) Concept of Operations

NASA Technical Reports Server (NTRS)

Rutishauser, David; Lohr, Gary; Hamilton, David; Powers, Robert; McKissick, Burnell; Adams, Catherine; Norris, Edward

2003-01-01

NASA Langley Research Center has a long history of aircraft wake vortex research, with the most recent accomplishment of demonstrating the Aircraft VOrtex Spacing System (AVOSS) at Dallas/Forth Worth International Airport in July 2000. The AVOSS was a concept for an integration of technologies applied to providing dynamic wake-safe reduced spacing for single runway arrivals, as compared to current separation standards applied during instrument approaches. AVOSS included state-of-the-art weather sensors, wake sensors, and a wake behavior prediction algorithm. Using real-time data AVOSS averaged a 6% potential throughput increase over current standards. This report describes a Concept of Operations for applying the technologies demonstrated in the AVOSS to a variety of terminal operations to mitigate wake vortex capacity constraints. A discussion of the technological issues and open research questions that must be addressed to design a Wake Vortex Advisory System (WakeVAS) is included.

75 FR 60145 - PNT Advisory Board; Meeting

Federal Register 2010, 2011, 2012, 2013, 2014

2010-09-29

... J. Miller, Space Communications and Navigation Program, Space Operations Mission Directorate... NATIONAL AERONAUTICS AND SPACE ADMINISTRATION [Notice (10-114)] PNT Advisory Board; Meeting AGENCY: National Aeronautics and Space Administration. ACTION: Notice of Meeting. SUMMARY: In accordance with the...

Navigation Concepts for the James Webb Space Telescope

NASA Technical Reports Server (NTRS)

Long, Anne; Leung, Dominic; Kelbel, David; Beckman, Mark; Grambling, Cheryl

2003-01-01

This paper evaluates the performance that can be achieved using candidate ground and onboard navigation approaches for operation of the James Webb Space Telescope, which will be in an orbit about the Sun-Earth L2 libration point. The ground navigation approach processes standard range and Doppler measurements from the Deep Space Network The onboard navigation approach processes celestial object measurements and/or ground-to- spacecraft Doppler measurements to autonomously estimate the spacecraft s position and velocity and Doppler reference frequency. Particular attention is given to assessing the absolute position and velocity accuracy that can be achieved in the presence of the frequent spacecraft reorientations and momentum unloads planned for this mission. The ground navigation approach provides stable navigation solutions using a tracking schedule of one 30-minute contact per day. The onboard navigation approach that uses only optical quality celestial object measurements provides stable autonomous navigation solutions. This study indicates that unmodeled changes in the solar radiation pressure cross-sectional area and modeled momentum unload velocity changes are the major error sources. These errors can be mitigated by modeling these changes, by estimating corrections to compensate for the changes, or by including acceleration measurements.

Apollo Onboard Navigation Techniques

NASA Technical Reports Server (NTRS)

Interbartolo, Michael

2009-01-01

This viewgraph presentation reviews basic navigation concepts, describes coordinate systems and identifies attitude determination techniques including Primary Guidance, Navigation and Control System (PGNCS) IMU management and Command and Service Module Stabilization and Control System/Lunar Module (LM) Abort Guidance System (AGS) attitude management. The presentation also identifies state vector determination techniques, including PGNCS coasting flight navigation, PGNCS powered flight navigation and LM AGS navigation.

Stereotaxy, navigation and the temporal concatenation.

PubMed

Apuzzo, M L; Chen, J C

1999-01-01

Nautical and cerebral navigation share similar elements of functional need and similar developmental pathways. The need for orientation necessitates the development of appropriate concepts, and such concepts are dependent on technology for practical realization. Occasionally, a concept precedes technology in time and requires periods of delay for appropriate development. A temporal concatenation exists where time allows the additive as need, concept and technology ultimately provide an endpoint of elegant solution. Nautical navigation has proceeded through periods of dead reckoning and celestial navigation to satellite orientation with associated refinements of instrumentation and charts for guidance. Cerebral navigation has progressed from craniometric orientation and burr hole mounted guidance systems to simple rectolinear and arc-centered devices based on radiographs to guidance by complex anatomical and functional maps provided as an amalgam of modern imaging modes. These maps are now augmented by complex frame and frameless systems which allow not only precise orientation, but also point and volumetric action. These complex technical modalities required and developed in part from elements of maritime navigation that have been translated to cerebral navigation in a temporal concatenation. Copyright 2000 S. Karger AG, Basel

SURVIVORSHIP NAVIGATION OUTCOME MEASURES: A report from the ACS Patient Navigation Working Group on Survivorship Navigation

PubMed Central

Pratt-Chapman, Mandi; Simon, Melissa A.; Patterson, Angela; Risendal, Betsy C.; Patierno, Steven

2013-01-01

Survivorship navigation is a relatively new concept in the field of patient navigation, but an important one. This paper highlights the essential functions of the survivorship navigator and defines core outcomes and measures for navigation in the survivorship period. Barriers to access to care experienced by patients during active cancer treatment can continue into the post-treatment period, affecting quality follow-up care for survivors. These barriers to care can be particularly acute for non-English speakers, immigrants, the uninsured, the underinsured and other vulnerable populations. The survivorship navigator can help reduce barriers and facilitate access to survivorship care and services through communication and information exchange for patients. Survivorship navigation may improve appropriate health care utilization through education and care coordination, potentially improving health outcomes and quality of life of survivors while reducing cost to the health care system. Survivorship navigators can also educate survivors on how to improve their overall wellness, thereby directly impacting the health of a growing population of cancer survivors. PMID:21780092

Navigating the fifth dimension: new concepts in interactive multimodality and multidimensional image navigation

NASA Astrophysics Data System (ADS)

Ratib, Osman; Rosset, Antoine; Dahlbom, Magnus; Czernin, Johannes

2005-04-01

Display and interpretation of multi dimensional data obtained from the combination of 3D data acquired from different modalities (such as PET-CT) require complex software tools allowing the user to navigate and modify the different image parameters. With faster scanners it is now possible to acquire dynamic images of a beating heart or the transit of a contrast agent adding a fifth dimension to the data. We developed a DICOM-compliant software for real time navigation in very large sets of 5 dimensional data based on an intuitive multidimensional jog-wheel widely used by the video-editing industry. The software, provided under open source licensing, allows interactive, single-handed, navigation through 3D images while adjusting blending of image modalities, image contrast and intensity and the rate of cine display of dynamic images. In this study we focused our effort on the user interface and means for interactively navigating in these large data sets while easily and rapidly changing multiple parameters such as image position, contrast, intensity, blending of colors, magnification etc. Conventional mouse-driven user interface requiring the user to manipulate cursors and sliders on the screen are too cumbersome and slow. We evaluated several hardware devices and identified a category of multipurpose jogwheel device that is used in the video-editing industry that is particularly suitable for rapidly navigating in five dimensions while adjusting several display parameters interactively. The application of this tool will be demonstrated in cardiac PET-CT imaging and functional cardiac MRI studies.

A Simulator Study of Deepwater Port Shiphandling and Navigation Problems in Poor Visibility.

DTIC Science & Technology

1981-01-01

CONNECTICUT 06350 ofTIA JANUARY 1981 FINAL REPORT Document Is available to the U.S. public through the National Technical Information Service , Springfield... Service port, offshore port, inshore port, Gulf of Springfield, VA 22161 Mexico port, port approach, port navigation, port safety, navigation hazard...additional fairway traffic had been present it ,vould have bec:n handled safely. Traffic separation schemes and a traffic advisory service for deepwater

Automated Pilot Advisory System

NASA Technical Reports Server (NTRS)

Parks, J. L., Jr.; Haidt, J. G.

1981-01-01

An Automated Pilot Advisory System (APAS) was developed and operationally tested to demonstrate the concept that low cost automated systems can provide air traffic and aviation weather advisory information at high density uncontrolled airports. The system was designed to enhance the see and be seen rule of flight, and pilots who used the system preferred it over the self announcement system presently used at uncontrolled airports.

76 FR 33773 - Navigation Safety Advisory Council; Vacancies

Federal Register 2010, 2011, 2012, 2013, 2014

2011-06-09

... advice and recommendations to the Secretary, Department of Homeland Security, through the Commandant of..., routing measures, marine information, diving safety, and aids to navigation systems. DATES: Applicants... 5 U.S.C. App. (Pub. L. 92-463). NAVSAC provides advice and recommendations to the Secretary, through...

Integrated INS/GPS Navigation from a Popular Perspective

NASA Technical Reports Server (NTRS)

Omerbashich, Mensur

2002-01-01

Inertial navigation, blended with other navigation aids, Global Positioning System (GPS) in particular, has gained significance due to enhanced navigation and inertial reference performance and dissimilarity for fault tolerance and anti-jamming. Relatively new concepts based upon using Differential GPS (DGPS) blended with Inertial (and visual) Navigation Sensors (INS) offer the possibility of low cost, autonomous aircraft landing. The FAA has decided to implement the system in a sophisticated form as a new standard navigation tool during this decade. There have been a number of new inertial sensor concepts in the recent past that emphasize increased accuracy of INS/GPS versus INS and reliability of navigation, as well as lower size and weight, and higher power, fault tolerance, and long life. The principles of GPS are not discussed; rather the attention is directed towards general concepts and comparative advantages. A short introduction to the problems faced in kinematics is presented. The intention is to relate the basic principles of kinematics to probably the most used navigation method in the future-INS/GPS. An example of the airborne INS is presented, with emphasis on how it works. The discussion of the error types and sources in navigation, and of the role of filters in optimal estimation of the errors then follows. The main question this paper is trying to answer is 'What are the benefits of the integration of INS and GPS and how is this, navigation concept of the future achieved in reality?' The main goal is to communicate the idea about what stands behind a modern navigation method.

75 FR 6215 - Houston/Galveston Navigation Safety Advisory Committee

Federal Register 2010, 2011, 2012, 2013, 2014

2010-02-08

... groups will meet in Houston, Texas to discuss waterway improvements, aids to navigation, area projects...; (b) Dredging subcommittee report; (c) Technology subcommittee report; (d) Waterways Optimization...

Autonomous navigation - The ARMMS concept. [Autonomous Redundancy and Maintenance Management Subsystem

NASA Technical Reports Server (NTRS)

Wood, L. J.; Jones, J. B.; Mease, K. D.; Kwok, J. H.; Goltz, G. L.; Kechichian, J. A.

1984-01-01

A conceptual design is outlined for the navigation subsystem of the Autonomous Redundancy and Maintenance Management Subsystem (ARMMS). The principal function of this navigation subsystem is to maintain the spacecraft over a specified equatorial longitude to within + or - 3 deg. In addition, the navigation subsystem must detect and correct internal faults. It comprises elements for a navigation executive and for orbit determination, trajectory, maneuver planning, and maneuver command. Each of these elements is described. The navigation subsystem is to be used in the DSCS III spacecraft.

Development and Evaluation of 2-D and 3-D Exocentric Synthetic Vision Navigation Display Concepts for Commercial Aircraft

NASA Technical Reports Server (NTRS)

Prinzel, Lawrence J., III; Kramer, Lynda J.; Arthur, J. J., III; Bailey, Randall E.; Sweeters, Jason L.

2005-01-01

NASA's Synthetic Vision Systems (SVS) project is developing technologies with practical applications that will help to eliminate low visibility conditions as a causal factor to civil aircraft accidents while replicating the operational benefits of clear day flight operations, regardless of the actual outside visibility condition. The paper describes experimental evaluation of a multi-mode 3-D exocentric synthetic vision navigation display concept for commercial aircraft. Experimental results evinced the situation awareness benefits of 2-D and 3-D exocentric synthetic vision displays over traditional 2-D co-planar navigation and vertical situation displays. Conclusions and future research directions are discussed.

[Navigated control: a new concept in computer assisted ENT-surgery].

PubMed

Strauss, G; Koulechov, K; Richter, R; Dietz, A; Meixensberger, J; Trantakis, C; Lüth, T

2005-08-01

This work conceived and evaluates a mechatronical system for ORL-surgery by example of a Shaver for Functional Endoscopic Sinus Surgery controlled by navigation. The Shaver is automatically on/off-regulated depending on the current position in relation to the planned working space. This working space is defined on the basis of the individual CT data. Within this area the Shaver reacts to the signal of the surgeon (foot pedal). If the Shaver leaves the working space, an interruption of the drive regulation to the Shaver takes place. The evaluation of the planning software based on 32 patient CT-data sets. The registration accuracy in a anatomical model was examined on 451 measurements of endonasal attached titanium screws. The conversions of the working space were evaluated at 5 different technical models. The average time for segmenting the working space was found at 4.23 minutes per case. An average registration accuracy of the Shaver of 1.08 mm resulted. The pre-defined cavity was to be cleared away without restrictions. The preoperative determined work-space was converted by 3.1 mm over all levels. The study proves the feasibility of a mechatronical assistant system by the example of the navigate-controlled Shaver in paranasal sinus surgery. Contrary to conventional CAS solutions redundancy and cognitive discharge of the surgeon are considered in this conception. We see numerous applications according to the explained principle for power-control of instruments in ORL-surgery in the future such as drilling, high frequency surgery or laser.

Less is sometimes more: a comparison of distance-control and navigated-control concepts of image-guided navigation support for surgeons.

PubMed

Luz, Maria; Manzey, Dietrich; Modemann, Susanne; Strauss, Gero

2015-01-01

Image-guided navigation (IGN) systems provide automation support of intra-operative information analysis and decision-making for surgeons. Previous research showed that navigated-control (NC) systems which represent high levels of decision-support and directly intervene in surgeons' workflow provide benefits with respect to patient safety and surgeons' physiological stress but also involve several cost effects (e.g. prolonged surgery duration, reduced secondary-task performance). It was hypothesised that less automated distance-control (DC) systems would provide a better solution in terms of human performance consequences. N = 18 surgeons performed a simulated mastoidectomy with NC, DC and without IGN assistance. Effects on surgical performance, physiological effort, workload and situation awareness (SA) were compared. As expected, DC technology had the same benefits as the NC system but also led to less unwanted side effects on surgery duration, subjective workload and SA. This suggests that IGN systems just providing information analysis support are overall more beneficial than higher automated decision-support. This study investigates human performance consequences of different concepts of IGN support for surgeons. Less automated DC systems turned out to provide advantages for patient safety and surgeons' stress similar to higher automated NC systems with, at the same time, reduced negative consequences on surgery time and subjective workload.

Learners' strategies for reconstructing cognitive frameworks and navigating conceptual change from prior conception to consensual genetics knowledge

NASA Astrophysics Data System (ADS)

Parrott, Annette M.

Problem. Science teachers are charged with preparing students to become scientifically literate individuals. Teachers are given curriculum that specifies the knowledge that students should come away with; however, they are not necessarily aware of the knowledge with which the student arrives or how best to help them navigate between the two knowledge states. Educators must be aware, not only of where their students are conceptually, but how their students move from their prior knowledge and naive theories, to scientifically acceptable theories. The understanding of how students navigate this course has the potential to revolutionize educational practices. Methods. This study explored how five 9th grade biology students reconstructed their cognitive frameworks and navigated conceptual change from prior conception to consensual genetics knowledge. The research questions investigated were: (1) how do students in the process of changing their naive science theories to accepted science theories describe their journey from prior knowledge to current conception, and (2) what are the methods that students utilize to bridge the gap between alternate and consensual science conceptions to effect conceptual change. Qualitative and quantitative methods were employed to gather and analyze the data. In depth, semi-structured interviews formed the primary data for probing the context and details of students' conceptual change experience. Primary interview data was coded by thematic analysis. Results and discussion. This study revealed information about students' perceived roles in learning, the role of articulation in the conceptual change process, and ways in which a community of learners aids conceptual change. It was ascertained that students see their role in learning primarily as repeating information until they could add that information to their knowledge. Students are more likely to consider challenges to their conceptual frameworks and be more motivated to become active

Performance Evaluation of Individual Aircraft Based Advisory Concept for Surface Management

NASA Technical Reports Server (NTRS)

Gupta, Gautam; Malik, Waqar; Tobias, Leonard; Jung, Yoon; Hong, Ty; Hayashi, Miwa

2013-01-01

Surface operations at airports in the US are based on tactical operations, where departure aircraft primarily queue up and wait at the departure runways. NASA's Spot And Runway Departure Advisor (SARDA) tool was developed to address these inefficiencies through Air Traffic Control Tower advisories. The SARDA system is being updated to include collaborative gate hold, either tactically or strategically. This paper presents the results of the human-in-the-loop evaluation of the tactical gate hold version of SARDA in a 360 degree simulated tower setting. The simulations were conducted for the east side of the Dallas/Fort Worth airport. The new system provides gate hold, ground controller and local controller advisories based on a single scheduler. Simulations were conducted with SARDA on and off, the off case reflecting current day operations with no gate hold. Scenarios based on medium (1.2x current levels) and heavy (1.5x current levels) traffic were explored. Data collected from the simulation was analyzed for runway usage, delay for departures and arrivals, and fuel consumption. Further, Traffic Management Initiatives were introduced for a subset of the aircraft. Results indicated that runway usage did not change with the use of SARDA, i.e., there was no loss in runway throughput as compared to baseline. Taxiing delay was significantly reduced with the use of advisory by 45% in medium scenarios and 60% in heavy. Arrival delay was unaffected by the use of advisory. Total fuel consumption was also reduced by 23% in medium traffic and 33% in heavy. TMI compliance appeared unaffected by the advisory

Multi-topic assignment for exploratory navigation of consumer health information in NetWellness using formal concept analysis.

PubMed

Cui, Licong; Xu, Rong; Luo, Zhihui; Wentz, Susan; Scarberry, Kyle; Zhang, Guo-Qiang

2014-08-03

Finding quality consumer health information online can effectively bring important public health benefits to the general population. It can empower people with timely and current knowledge for managing their health and promoting wellbeing. Despite a popular belief that search engines such as Google can solve all information access problems, recent studies show that using search engines and simple search terms is not sufficient. Our objective is to provide an approach to organizing consumer health information for navigational exploration, complementing keyword-based direct search. Multi-topic assignment to health information, such as online questions, is a fundamental step for navigational exploration. We introduce a new multi-topic assignment method combining semantic annotation using UMLS concepts (CUIs) and Formal Concept Analysis (FCA). Each question was tagged with CUIs identified by MetaMap. The CUIs were filtered with term-frequency and a new term-strength index to construct a CUI-question context. The CUI-question context and a topic-subject context were used for multi-topic assignment, resulting in a topic-question context. The topic-question context was then directly used for constructing a prototype navigational exploration interface. Experimental evaluation was performed on the task of automatic multi-topic assignment of 99 predefined topics for about 60,000 consumer health questions from NetWellness. Using example-based metrics, suitable for multi-topic assignment problems, our method achieved a precision of 0.849, recall of 0.774, and F₁ measure of 0.782, using a reference standard of 278 questions with manually assigned topics. Compared to NetWellness' original topic assignment, a 36.5% increase in recall is achieved with virtually no sacrifice in precision. Enhancing the recall of multi-topic assignment without sacrificing precision is a prerequisite for achieving the benefits of navigational exploration. Our new multi-topic assignment method

Multi-topic assignment for exploratory navigation of consumer health information in NetWellness using formal concept analysis

PubMed Central

2014-01-01

Background Finding quality consumer health information online can effectively bring important public health benefits to the general population. It can empower people with timely and current knowledge for managing their health and promoting wellbeing. Despite a popular belief that search engines such as Google can solve all information access problems, recent studies show that using search engines and simple search terms is not sufficient. Our objective is to provide an approach to organizing consumer health information for navigational exploration, complementing keyword-based direct search. Multi-topic assignment to health information, such as online questions, is a fundamental step for navigational exploration. Methods We introduce a new multi-topic assignment method combining semantic annotation using UMLS concepts (CUIs) and Formal Concept Analysis (FCA). Each question was tagged with CUIs identified by MetaMap. The CUIs were filtered with term-frequency and a new term-strength index to construct a CUI-question context. The CUI-question context and a topic-subject context were used for multi-topic assignment, resulting in a topic-question context. The topic-question context was then directly used for constructing a prototype navigational exploration interface. Results Experimental evaluation was performed on the task of automatic multi-topic assignment of 99 predefined topics for about 60,000 consumer health questions from NetWellness. Using example-based metrics, suitable for multi-topic assignment problems, our method achieved a precision of 0.849, recall of 0.774, and F1 measure of 0.782, using a reference standard of 278 questions with manually assigned topics. Compared to NetWellness’ original topic assignment, a 36.5% increase in recall is achieved with virtually no sacrifice in precision. Conclusion Enhancing the recall of multi-topic assignment without sacrificing precision is a prerequisite for achieving the benefits of navigational exploration. Our

Definition study of land/sea civil user navigational location monitoring systems for NAVSTAR GPS: User requirements and systems concepts

NASA Technical Reports Server (NTRS)

Devito, D. M.

1981-01-01

A low-cost GPS civil-user mobile terminal whose purchase cost is substantially an order of magnitude less than estimates for the military counterpart is considered with focus on ground station requirements for position monitoring of civil users requiring this capability and the civil user navigation and location-monitoring requirements. Existing survey literature was examined to ascertain the potential users of a low-cost NAVSTAR receiver and to estimate their number, function, and accuracy requirements. System concepts are defined for low cost user equipments for in-situ navigation and the retransmission of low data rate positioning data via a geostationary satellite to a central computing facility.

Light Detection and Ranging-Based Terrain Navigation: A Concept Exploration

NASA Technical Reports Server (NTRS)

Campbell, Jacob; UijtdeHaag, Maarten; vanGraas, Frank; Young, Steve

2003-01-01

This paper discusses the use of Airborne Light Detection And Ranging (LiDAR) equipment for terrain navigation. Airborne LiDAR is a relatively new technology used primarily by the geo-spatial mapping community to produce highly accurate and dense terrain elevation maps. In this paper, the term LiDAR refers to a scanning laser ranger rigidly mounted to an aircraft, as opposed to an integrated sensor system that consists of a scanning laser ranger integrated with Global Positioning System (GPS) and Inertial Measurement Unit (IMU) data. Data from the laser range scanner and IMU will be integrated with a terrain database to estimate the aircraft position and data from the laser range scanner will be integrated with GPS to estimate the aircraft attitude. LiDAR data was collected using NASA Dryden's DC-8 flying laboratory in Reno, NV and was used to test the proposed terrain navigation system. The results of LiDAR-based terrain navigation shown in this paper indicate that airborne LiDAR is a viable technology enabler for fully autonomous aircraft navigation. The navigation performance is highly dependent on the quality of the terrain databases used for positioning and therefore high-resolution (2 m post-spacing) data was used as the terrain reference.

Study Navigator: An Algorithmically Generated Aid for Learning from Electronic Textbooks

ERIC Educational Resources Information Center

Agrawal, Rakesh; Gollapudi, Sreenivas; Kannan, Anitha; Kenthapadi, Krishnaram

2014-01-01

We present "study navigator," an algorithmically-generated aid for enhancing the experience of studying from electronic textbooks. The study navigator for a section of the book consists of helpful "concept references" for understanding this section. Each concept reference is a pair consisting of a concept phrase explained…

Libration Point Navigation Concepts Supporting the Vision for Space Exploration

NASA Technical Reports Server (NTRS)

Carpenter, J. Russell; Folta, David C.; Moreau, Michael C.; Quinn, David A.

2004-01-01

This work examines the autonomous navigation accuracy achievable for a lunar exploration trajectory from a translunar libration point lunar navigation relay satellite, augmented by signals from the Global Positioning System (GPS). We also provide a brief analysis comparing the libration point relay to lunar orbit relay architectures, and discuss some issues of GPS usage for cis-lunar trajectories.

Navigation in head and neck oncological surgery: an emerging concept.

PubMed

Gangloff, P; Mastronicola, R; Cortese, S; Phulpin, B; Sergeant, C; Guillemin, F; Eluecque, H; Perrot, C; Dolivet, G

2011-01-01

Navigation surgery, initially applied in rhinology, neurosurgery and orthopaedic cases, has been developed over the last twenty years. Surgery based on computed tomography data has become increasingly important in the head and neck region. The technique for hardware fusion between RMI and computed tomography is also becoming more useful. We use such device since 2006 in head and neck carcinologic situation. Navigation allows control of the resection in order to avoid and protect the precise anatomical structures (vessels and nerves). It also guides biopsy and radiofrequency. Therefore, quality of life is much more increased and morbidity is decreased for these patients who undergo major and mutilating head and neck surgery. Here we report the results of 33 navigation procedures performed for 31 patients in our institution.

Autonomous Navigation Using Celestial Objects

NASA Technical Reports Server (NTRS)

Folta, David; Gramling, Cheryl; Leung, Dominic; Belur, Sheela; Long, Anne

1999-01-01

In the twenty-first century, National Aeronautics and Space Administration (NASA) Enterprises envision frequent low-cost missions to explore the solar system, observe the universe, and study our planet. Satellite autonomy is a key technology required to reduce satellite operating costs. The Guidance, Navigation, and Control Center (GNCC) at the Goddard Space Flight Center (GSFC) currently sponsors several initiatives associated with the development of advanced spacecraft systems to provide autonomous navigation and control. Autonomous navigation has the potential both to increase spacecraft navigation system performance and to reduce total mission cost. By eliminating the need for routine ground-based orbit determination and special tracking services, autonomous navigation can streamline spacecraft ground systems. Autonomous navigation products can be included in the science telemetry and forwarded directly to the scientific investigators. In addition, autonomous navigation products are available onboard to enable other autonomous capabilities, such as attitude control, maneuver planning and orbit control, and communications signal acquisition. Autonomous navigation is required to support advanced mission concepts such as satellite formation flying. GNCC has successfully developed high-accuracy autonomous navigation systems for near-Earth spacecraft using NASA's space and ground communications systems and the Global Positioning System (GPS). Recently, GNCC has expanded its autonomous navigation initiative to include satellite orbits that are beyond the regime in which use of GPS is possible. Currently, GNCC is assessing the feasibility of using standard spacecraft attitude sensors and communication components to provide autonomous navigation for missions including: libration point, gravity assist, high-Earth, and interplanetary orbits. The concept being evaluated uses a combination of star, Sun, and Earth sensor measurements along with forward-link Doppler

Flight assessment of a data-link-based navigation-guidance concept

NASA Technical Reports Server (NTRS)

Abbott, T. S.

1983-01-01

With the proposed introduction of a data-link provision into the Air-Traffic-control (ATC) system, the capability will exist to supplement the ground-air, voice (radio) link with digital, data-link information. Additionally, ATC computers could provide, via the data link guidance and navigation information to the pilot which could then be presented in much the same manner as conventional navigation information. The primary objective of this study was to assess the feasibility and acceptability of using 4-sec and 12-sec information updating to drive conventional cockpit-navigation-instrument formats for path-tracking guidance. A flight test, consisting of 19 tracking tasks, was conducted and, through the use of pilot questionnaires and performance data, the following results were obtained. From a performance standpoint, the 4-sec and 12-sec updating led to a slight degradation in path-tracking performance, relative to continuous updating. From the pilot's viewpoint, the 12-sec data interval was suitable for long path segments (greater than 2 min of flight time), but it was difficult to use on shorter segments because of higher work load and insufficient stabilization time. Overall, it was determined that the utilization of noncontinuous data for navigation was both feasible and acceptable for the prescribed task.

Building a Navigation System to Reduce Cancer Disparities in Urban Black Older Adults

PubMed Central

Bone, Lee; Edington, Kristen; Rosenberg, Jessica; Wenzel, Jennifer; Garza, Mary A.; Klein, Catherine; Schmitt, Lisa; Ford, Jean G.

2014-01-01

Background Although cancer outcomes have improved in recent decades, substantial disparities by race, ethnicity, income and education persist. Increasingly, patient navigation services are demonstrating success in improving cancer detection, treatment and care and in reducing cancer health disparities. To advance progress in developing patient navigation programs, extensive descriptions of each component of the program must be made available to researchers and health service providers. Objective To describe the components of a patient navigation program designed to improve cancer screening based on informed decision-making on cancer screening and cancer treatment services among predominantly Black older adults in Baltimore City. Methods A community-academic participatory approach was used to develop a patient navigation program in Baltimore, Maryland. The components of the patient navigation system included the development of a community academic (advisory) committee (CAC); recruitment and selection of community health workers (CHWs)/navigators and supervisory staff; initial training and continuing education of the CHWs/navigators; and evaluation of CHWs/navigators. The study was approved by the Johns Hopkins Bloomberg School of Public Health Institutional Review Board. Conclusions The incorporation of community-based participatory research (CPBR) principles into each facet of this patient navigation program facilitated the attainment of the intervention’s objectives. This patient navigation program successfully delivered cancer navigation services to 1302 urban Black older adults. Appropriately recruited, selected and trained CHWs monitored by an experienced supervisor and investigators are the key elements in a patient navigation program. This model has the potential to be adapted by research and health service providers. PMID:23793252

Celestial Navigation with the Stereographic Projection

ERIC Educational Resources Information Center

Hutton, D. R.

1977-01-01

Presented is an exercise in the ability to navigate by the stars. It applies difficult concepts of positional astronomy concerning coordinate systems and time. Stereographic projection is utilized because it allows rapid completion of calculations and measurements and keeps the concepts clear to the students. (MA)

Performance Evaluation of SARDA: An Individual Aircraft-Based Advisory Concept for Surface Management

NASA Technical Reports Server (NTRS)

Jung, Yoon; Malik, Waqar; Tobias, Leonard; Gupta, Gautam; Hoang, Ty; Hayashi, Miwa

2015-01-01

Surface operations at airports in the US are based on tactical operations, where departure aircraft primarily queue up and wait at the departure runways. NASAs Spot And Runway Departure Advisor (SARDA) tool was developed to address these inefficiencies through Air Traffic Control Tower advisories. The SARDA system is being updated to include collaborative gate hold, either tactically or strategically. This paper presents the results of the human-in-the-loop evaluation of the tactical gate hold version of SARDA in a 360 degree simulated tower setting. The simulations were conducted for the east side of the Dallas-Fort Worth airport. The new system provides gate hold, ground controller and local controller advisories based on a single scheduler. Simulations were conducted with SARDA on and off, the off case reflecting current day operations with no gate hold. Scenarios based on medium (1.2x current levels) and heavy (1.5x current levels) traffic were explored. Data collected from the simulation was analyzed for runway usage, delay for departures and arrivals, and fuel consumption. Further, Traffic Management Initiatives were introduced for a subset of the aircraft. Results indicated that runway usage did not change with the use of SARDA, i.e., there was no loss in runway throughput as compared to baseline. Taxiing delay was significantly reduced with the use of advisory by 45 in medium scenarios and 60 in heavy. Arrival delay was unaffected by the use of advisory. Total fuel consumption was also reduced by 23 in medium traffic and 33 in heavy. TMI compliance appeared unaffected by the advisory.

Current concepts and future perspectives in computer-assisted navigated total knee replacement.

PubMed

Matsumoto, Tomoyuki; Nakano, Naoki; Lawrence, John E; Khanduja, Vikas

2018-05-12

Total knee replacements (TKR) aim to restore stability of the tibiofemoral and patella-femoral joints and provide relief of pain and improved quality of life for the patient. In recent years, computer-assisted navigation systems have been developed with the aim of reducing human error in joint alignment and improving patient outcomes. We examined the current body of evidence surrounding the use of navigation systems and discussed their current and future role in TKR. The current body of evidence shows that the use of computer navigation systems for TKR significantly reduces outliers in the mechanical axis and coronal prosthetic position. Also, navigation systems offer an objective assessment of soft tissue balancing that had previously not been available. Although these benefits represent a technical superiority to conventional TKR techniques, there is limited evidence to show long-term clinical benefit with the use of navigation systems, with only a small number of studies showing improvement in outcome scores at short-term follow-up. Because of the increased costs and operative time associated with their use as well as the emergence of more affordable and patient-specific technologies, it is unlikely for navigation systems to become more widely used in the near future. Whilst this technology helps surgeons to achieve improved component positioning, it is important to consider the clinical and functional implications, as well as the added costs and potential learning curve associated with adopting new technology.

Magnetospheric Multiscale Mission (MMS) Phase 2B Navigation Performance

NASA Technical Reports Server (NTRS)

Scaperoth, Paige Thomas; Long, Anne; Carpenter, Russell

2009-01-01

The Magnetospheric Multiscale (MMS) formation flying mission, which consists of four spacecraft flying in a tetrahedral formation, has challenging navigation requirements associated with determining and maintaining the relative separations required to meet the science requirements. The baseline navigation concept for MMS is for each spacecraft to independently estimate its position, velocity and clock states using GPS pseudorange data provided by the Goddard Space Flight Center-developed Navigator receiver and maneuver acceleration measurements provided by the spacecraft's attitude control subsystem. State estimation is performed onboard in real-time using the Goddard Enhanced Onboard Navigation System flight software, which is embedded in the Navigator receiver. The current concept of operations for formation maintenance consists of a sequence of two maintenance maneuvers that is performed every 2 weeks. Phase 2b of the MMS mission, in which the spacecraft are in 1.2 x 25 Earth radii orbits with nominal separations at apogee ranging from 30 km to 400 km, has the most challenging navigation requirements because, during this phase, GPS signal acquisition is restricted to less than one day of the 2.8-day orbit. This paper summarizes the results from high-fidelity simulations to determine if the MMS navigation requirements can be met between and immediately following the maintenance maneuver sequence in Phase 2b.

Wikipedia Entries as a Source of CAR Navigation Landmarks

NASA Astrophysics Data System (ADS)

Binski, N.; Zhang, L.; Dalyot, S.

2016-06-01

Car navigation system devices provide today with an easy and simple solution to the basic concept of reaching a destination. Although these systems usually achieve this goal, they still deliver a limited and poor sequence of instructions that do not consider the human nature of using landmarks during wayfinding. This research paper addresses the concept of enriching navigation route instructions by adding supplementary route information in the form of landmarks. We aim at using a contributed source of landmarks information, which is easy to access, available, show high update rate, and have a large scale of information. For this, Wikipedia was chosen, since it represents the world's largest free encyclopaedia that includes information about many spatial entities. A survey and classification of available landmarks is implemented, coupled with ranking algorithms based on the entries' categories and attributes. These are aimed at retrieving the most relevant landmark information required that are valuable for the enrichment of a specific navigation route. The paper will present this methodology, together with examples and results, showing the feasibility of using this concept and its potential of enriching navigation processes.

Air Navigation. Flying Training. AFM 51-40. NAVAIR 00-80V-49.

ERIC Educational Resources Information Center

Air Training Command, Randolph AFB, TX.

This manual provides information on all phases of air navigation for navigators and student navigators in training. It develops the art of navigation from the simplest concepts to the most advanced procedures and techniques. The text contains explanations on how to measure, map, and chart the earth; how to use basic instruments to obtain…

Autonomous navigation using lunar beacons

NASA Technical Reports Server (NTRS)

Khatib, A. R.; Ellis, J.; French, J.; Null, G.; Yunck, T.; Wu, S.

1983-01-01

The concept of using lunar beacon signal transmission for on-board navigation for earth satellites and near-earth spacecraft is described. The system would require powerful transmitters on the earth-side of the moon's surface and black box receivers with antennae and microprocessors placed on board spacecraft for autonomous navigation. Spacecraft navigation requires three position and three velocity elements to establish location coordinates. Two beacons could be soft-landed on the lunar surface at the limits of allowable separation and each would transmit a wide-beam signal with cones reaching GEO heights and be strong enough to be received by small antennae in near-earth orbit. The black box processor would perform on-board computation with one-way Doppler/range data and dynamical models. Alternatively, GEO satellites such as the GPS or TDRSS spacecraft can be used with interferometric techniques to provide decimeter-level accuracy for aircraft navigation.

Mars rover local navigation and hazard avoidance

NASA Technical Reports Server (NTRS)

Wilcox, B. H.; Gennery, D. B.; Mishkin, A. H.

1989-01-01

A Mars rover sample return mission has been proposed for the late 1990's. Due to the long speed-of-light delays between earth and Mars, some autonomy on the rover is highly desirable. JPL has been conducting research in two possible modes of rover operation, Computer-Aided Remote Driving and Semiautonomous Navigation. A recently-completed research program used a half-scale testbed vehicle to explore several of the concepts in semiautonomous navigation. A new, full-scale vehicle with all computational and power resources on-board will be used in the coming year to demonstrate relatively fast semiautonomous navigation. The computational and power requirements for Mars rover local navigation and hazard avoidance are discussed.

Mars Rover Local Navigation And Hazard Avoidance

NASA Astrophysics Data System (ADS)

Wilcox, B. H.; Gennery, D. B.; Mishkin, A. H.

1989-03-01

A Mars rover sample return mission has been proposed for the late 1990's. Due to the long speed-of-light delays between Earth and Mars, some autonomy on the rover is highly desirable. JPL has been conducting research in two possible modes of rover operation, Computer-Aided Remote Driving and Semiautonomous Navigation. A recently-completed research program used a half-scale testbed vehicle to explore several of the concepts in semiautonomous navigation. A new, full-scale vehicle with all computational and power resources on-board will be used in the coming year to demonstrate relatively fast semiautonomous navigation. The computational and power requirements for Mars rover local navigation and hazard avoidance are discussed.

Framework Based Guidance Navigation and Control Flight Software Development

NASA Technical Reports Server (NTRS)

McComas, David

2007-01-01

This viewgraph presentation describes NASA's guidance navigation and control flight software development background. The contents include: 1) NASA/Goddard Guidance Navigation and Control (GN&C) Flight Software (FSW) Development Background; 2) GN&C FSW Development Improvement Concepts; and 3) GN&C FSW Application Framework.

Autonomous vehicle navigation utilizing fuzzy controls concepts for a next generation wheelchair.

PubMed

Hansen, J D; Barrett, S F; Wright, C H G; Wilcox, M

2008-01-01

Three different positioning techniques were investigated to create an autonomous vehicle that could accurately navigate towards a goal: Global Positioning System (GPS), compass dead reckoning, and Ackerman steering. Each technique utilized a fuzzy logic controller that maneuvered a four-wheel car towards a target. The reliability and the accuracy of the navigation methods were investigated by modeling the algorithms in software and implementing them in hardware. To implement the techniques in hardware, positioning sensors were interfaced to a remote control car and a microprocessor. The microprocessor utilized the sensor measurements to orient the car with respect to the target. Next, a fuzzy logic control algorithm adjusted the front wheel steering angle to minimize the difference between the heading and bearing. After minimizing the heading error, the car maintained a straight steering angle along its path to the final destination. The results of this research can be used to develop applications that require precise navigation. The design techniques can also be implemented on alternate platforms such as a wheelchair to assist with autonomous navigation.

A Leapfrog Navigation System

NASA Astrophysics Data System (ADS)

Opshaug, Guttorm Ringstad

There are times and places where conventional navigation systems, such as the Global Positioning System (GPS), are unavailable due to anything from temporary signal occultations to lack of navigation system infrastructure altogether. The goal of the Leapfrog Navigation System (LNS) is to provide localized positioning services for such cases. The concept behind leapfrog navigation is to advance a group of navigation units teamwise into an area of interest. In a practical 2-D case, leapfrogging assumes known initial positions of at least two currently stationary navigation units. Two or more mobile units can then start to advance into the area of interest. The positions of the mobiles are constantly being calculated based on cross-range distance measurements to the stationary units, as well as cross-ranges among the mobiles themselves. At some point the mobile units stop, and the stationary units are released to move. This second team of units (now mobile) can then overtake the first team (now stationary) and travel even further towards the common goal of the group. Since there always is one stationary team, the position of any unit can be referenced back to the initial positions. Thus, LNS provides absolute positioning. I developed navigation algorithms needed to solve leapfrog positions based on cross-range measurements. I used statistical tools to predict how position errors would grow as a function of navigation unit geometry, cross-range measurement accuracy and previous position errors. Using this knowledge I predicted that a 4-unit Leapfrog Navigation System using 100 m baselines and 200 m leap distances could travel almost 15 km before accumulating absolute position errors of 10 m (1sigma). Finally, I built a prototype leapfrog navigation system using 4 GPS transceiver ranging units. I placed the 4 units in the vertices a 10m x 10m square, and leapfrogged the group 20 meters forwards, and then back again (40 m total travel). Average horizontal RMS position

76 FR 30202 - National Space-Based Positioning, Navigation, and Timing (PNT) Advisory Board; Meeting

Federal Register 2010, 2011, 2012, 2013, 2014

2011-05-24

.... ACTION: Notice of meeting. SUMMARY: In accordance with the Federal Advisory Committee Act (Pub. L. 92-463... Positioning System (GPS) modernization. Explore opportunities for enhancing the interoperability of GPS with.... Prioritize current and planned GPS capabilities and services while assessing future PNT architecture options...

A TCAS-II Resolution Advisory Detection Algorithm

NASA Technical Reports Server (NTRS)

Munoz, Cesar; Narkawicz, Anthony; Chamberlain, James

2013-01-01

The Traffic Alert and Collision Avoidance System (TCAS) is a family of airborne systems designed to reduce the risk of mid-air collisions between aircraft. TCASII, the current generation of TCAS devices, provides resolution advisories that direct pilots to maintain or increase vertical separation when aircraft distance and time parameters are beyond designed system thresholds. This paper presents a mathematical model of the TCASII Resolution Advisory (RA) logic that assumes accurate aircraft state information. Based on this model, an algorithm for RA detection is also presented. This algorithm is analogous to a conflict detection algorithm, but instead of predicting loss of separation, it predicts resolution advisories. It has been formally verified that for a kinematic model of aircraft trajectories, this algorithm completely and correctly characterizes all encounter geometries between two aircraft that lead to a resolution advisory within a given lookahead time interval. The RA detection algorithm proposed in this paper is a fundamental component of a NASA sense and avoid concept for the integration of Unmanned Aircraft Systems in civil airspace.

Enabling Communication and Navigation Technologies for Future Near Earth Science Missions

NASA Technical Reports Server (NTRS)

Israel, David J.; Heckler, Gregory; Menrad, Robert; Hudiburg, John; Boroson, Don; Robinson, Bryan; Cornwell, Donald

2016-01-01

In 2015, the Earth Regimes Network Evolution Study (ERNESt) proposed an architectural concept and technologies that evolve to enable space science and exploration missions out to the 2040 timeframe. The architectural concept evolves the current instantiations of the Near Earth Network and Space Network with new technologies to provide a global communication and navigation network that provides communication and navigation services to a wide range of space users in the near Earth domain. The technologies included High Rate Optical Communications, Optical Multiple Access (OMA), Delay Tolerant Networking (DTN), User Initiated Services (UIS), and advanced Position, Navigation, and Timing technology. This paper describes the key technologies and their current technology readiness levels. Examples of science missions that could be enabled by the technologies and the projected operational benefits of the architecture concept to missions are also described.

Navigation concepts for magnetic resonance imaging-guided musculoskeletal interventions.

PubMed

Busse, Harald; Kahn, Thomas; Moche, Michael

2011-08-01

Image-guided musculoskeletal (MSK) interventions are a widely used alternative to open surgical procedures for various pathological findings in different body regions. They traditionally involve one of the established x-ray imaging techniques (radiography, fluoroscopy, computed tomography) or ultrasound scanning. Over the last decades, magnetic resonance imaging (MRI) has evolved into one of the most powerful diagnostic tools for nearly the whole body and has therefore been increasingly considered for interventional guidance as well.The strength of MRI for MSK applications is a combination of well-known general advantages, such as multiplanar and functional imaging capabilities, wide choice of tissue contrasts, and absence of ionizing radiation, as well as a number of MSK-specific factors, for example, the excellent depiction of soft-tissue tumors, nonosteolytic bone changes, and bone marrow lesions. On the downside, the magnetic resonance-compatible equipment needed, restricted space in the magnet, longer imaging times, and the more complex workflow have so far limited the number of MSK procedures under MRI guidance.Navigation solutions are generally a natural extension of any interventional imaging system, in particular, because powerful hardware and software for image processing have become routinely available. They help to identify proper access paths, provide accurate feedback on the instrument positions, facilitate the workflow in an MRI environment, and ultimately contribute to procedural safety and success.The purposes of this work were to describe some basic concepts and devices for MRI guidance of MSK procedures and to discuss technical and clinical achievements and challenges for some selected implementations.

Unraveling the neural basis of insect navigation.

PubMed

Heinze, Stanley

2017-12-01

One of the defining features of animals is their ability to navigate their environment. Using behavioral experiments this topic has been under intense investigation for nearly a century. In insects, this work has largely focused on the remarkable homing abilities of ants and bees. More recently, the neural basis of navigation shifted into the focus of attention. Starting with revealing the neurons that process the sensory signals used for navigation, in particular polarized skylight, migratory locusts became the key species for delineating navigation-relevant regions of the insect brain. Over the last years, this work was used as a basis for research in the fruit fly Drosophila and extraordinary progress has been made in illuminating the neural underpinnings of navigational processes. With increasingly detailed understanding of navigation circuits, we can begin to ask whether there is a fundamentally shared concept underlying all navigation behavior across insects. This review highlights recent advances and puts them into the context of the behavioral work on ants and bees, as well as the circuits involved in polarized-light processing. A region of the insect brain called the central complex emerges as the common substrate for guiding navigation and its highly organized neuroarchitecture provides a framework for future investigations potentially suited to explain all insect navigation behavior at the level of identified neurons. Copyright © 2017 Elsevier Inc. All rights reserved.

The ADVANCE project : formal evaluation of the targeted deployment. Volume 2

DOT National Transportation Integrated Search

1997-01-01

This document reports on the formal evaluation of the targeted (limited but highly focused) deployment of the Advanced Driver and Vehicle Advisory Navigation ConcEpt (ADVANCE), an in-vehicle advanced traveler information system designed to provide sh...

The ADVANCE project : formal evaluation of the targeted deployment. Volume 1

DOT National Transportation Integrated Search

1997-01-01

The Advanced Driver and Vehicle Advisory Navigation ConcEpt (ADVANCE) was an in-vehicle advanced traveler information system (ATIS) that operated in the northwest suburbs of Chicago, Illinois. It was designed to provide origin-destination shortest-ti...

Los Angeles congestion reduction demonstration (Metro ExpressLanes) program. National evaluation : traffic system data test plan.

DOT National Transportation Integrated Search

1997-01-01

This document reports on the formal evaluation of the targeted (limited but highly focused) deployment of the Advanced Driver and Vehicle Advisory Navigation ConcEpt (ADVANCE), an in-vehicle advanced traveler information system designed to provide sh...

Evaluation of the navigation performance of shipboard-VTOL-landing guidance systems

NASA Technical Reports Server (NTRS)

Mcgee, L. A.; Paulk, C. H., Jr.; Steck, S. A.; Schmidt, S. F.; Merz, A. W.

1979-01-01

The objective of this study was to explore the performance of a VTOL aircraft landing approach navigation system that receives data (1) from either a microwave scanning beam (MSB) or a radar-transponder (R-T) landing guidance system, and (2) information data-linked from an aviation facility ship. State-of-the-art low-cost-aided inertial techniques and variable gain filters were used in the assumed navigation system. Compensation for ship motion was accomplished by a landing pad deviation vector concept that is a measure of the landing pad's deviation from its calm sea location. The results show that the landing guidance concepts were successful in meeting all of the current Navy navigation error specifications, provided that vector magnitude of the allowable error, rather than the error in each axis, is a permissible interpretation of acceptable performance. The success of these concepts, however, is strongly dependent on the distance measuring equipment bias. In addition, the 'best possible' closed-loop tracking performance achievable with the assumed point-mass VTOL aircraft guidance concept is demonstrated.

Autonomous RPRV Navigation, Guidance and Control

NASA Technical Reports Server (NTRS)

Johnston, Donald E.; Myers, Thomas T.; Zellner, John W.

1983-01-01

Dryden Flight Research Center has the responsibility for flight testing of advanced remotely piloted research vehicles (RPRV) to explore highly maneuverable aircraft technology, and to test advanced structural concepts, and related aeronautical technologies which can yield important research results with significant cost benefits. The primary purpose is to provide the preliminary design of an upgraded automatic approach and landing control system and flight director display to improve landing performance and reduce pilot workload. A secondary purpose is to determine the feasibility of an onboard autonomous navigation, orbit, and landing capability for safe vehicle recovery in the event of loss of telemetry uplink communication with the vehicles. The current RPRV approach and landing method, the proposed automatic and manual approach and autoland system, and an autonomous navigation, orbit, and landing system concept which is based on existing operational technology are described.

Intelligent personal navigator supported by knowledge-based systems for estimating dead reckoning navigation parameters

NASA Astrophysics Data System (ADS)

Moafipoor, Shahram

Personal navigators (PN) have been studied for about a decade in different fields and applications, such as safety and rescue operations, security and emergency services, and police and military applications. The common goal of all these applications is to provide precise and reliable position, velocity, and heading information of each individual in various environments. In the PN system developed in this dissertation, the underlying assumption is that the system does not require pre-existing infrastructure to enable pedestrian navigation. To facilitate this capability, a multisensor system concept, based on the Global Positioning System (GPS), inertial navigation, barometer, magnetometer, and a human pedometry model has been developed. An important aspect of this design is to use the human body as navigation sensor to facilitate Dead Reckoning (DR) navigation in GPS-challenged environments. The system is designed predominantly for outdoor environments, where occasional loss of GPS lock may happen; however, testing and performance demonstration have been extended to indoor environments. DR navigation is based on a relative-measurement approach, with the key idea of integrating the incremental motion information in the form of step direction (SD) and step length (SL) over time. The foundation of the intelligent navigation system concept proposed here rests in exploiting the human locomotion pattern, as well as change of locomotion in varying environments. In this context, the term intelligent navigation represents the transition from the conventional point-to-point DR to dynamic navigation using the knowledge about the mechanism of the moving person. This approach increasingly relies on integrating knowledge-based systems (KBS) and artificial intelligence (AI) methodologies, including artificial neural networks (ANN) and fuzzy logic (FL). In addition, a general framework of the quality control for the real-time validation of the DR processing is proposed, based on a

Metropolitan transportation management center : a case study : Georgia NaviGAtor : accurate and timely information to navigate Georgia roads

DOT National Transportation Integrated Search

1999-10-01

The following case study provides a snapshot of Atlanta's NaviGAtor transportation management center. It follows the outline provided in the companion document, Metropolitan Transportation Management Center Concepts of Operation - A Cross Cutting Stu...

Conception of an Expert Advisory Board for the European Reference Network for Rare Respiratory Diseases.

PubMed

Walther, Désirée; Steinmann, Olivia; Schaefer, Johanna; Wagner, Thomas O F; Storf, Holger

2018-01-01

Due to low prevalence of rare diseases and lack of expertise, patients suffering rare diseases are challenged with finding experts that are specialized and experienced in treating their conditions and get qualified answers. To address this issue, the approach of an interactive platform was made, which should allow affected patients or physicians the possibility to ask experts their specific questions to gather and improve their knowledge about their condition. This paper introduces the pan-European Internet platform EXABO, an Expert Advisory Board, which is developed within the framework of the European Reference Network for rare respiratory diseases (ERN-LUNG). The purpose of establishing this platform is initially dedicated to rare respiratory diseases in whole Europe, whilst the set-up is however, planned to be a generic tool for additional diseases or groups of diseases. This paper gives an overview of the concept and planning of the EXABO platform and shows how the platform is to be implemented.

Autonomous GPS/INS navigation experiment for Space Transfer Vehicle

NASA Technical Reports Server (NTRS)

Upadhyay, Triveni N.; Cotterill, Stephen; Deaton, A. W.

1993-01-01

An experiment to validate the concept of developing an autonomous integrated spacecraft navigation system using on board Global Positioning System (GPS) and Inertial Navigation System (INS) measurements is described. The feasibility of integrating GPS measurements with INS measurements to provide a total improvement in spacecraft navigation performance, i.e. improvement in position, velocity and attitude information, was previously demonstrated. An important aspect of this research is the automatic real time reconfiguration capability of the system designed to respond to changes in a spacecraft mission under the control of an expert system.

Autonomous GPS/INS navigation experiment for Space Transfer Vehicle

NASA Astrophysics Data System (ADS)

Upadhyay, Triveni N.; Cotterill, Stephen; Deaton, A. W.

1993-07-01

An experiment to validate the concept of developing an autonomous integrated spacecraft navigation system using on board Global Positioning System (GPS) and Inertial Navigation System (INS) measurements is described. The feasibility of integrating GPS measurements with INS measurements to provide a total improvement in spacecraft navigation performance, i.e. improvement in position, velocity and attitude information, was previously demonstrated. An important aspect of this research is the automatic real time reconfiguration capability of the system designed to respond to changes in a spacecraft mission under the control of an expert system.

Automatic Traffic Advisory and Resolution Service (ATARS) Multi-Site Algorithms. Revision 1,

DTIC Science & Technology

1980-10-01

Summary Concept Description The Automatic Traffic Advisory and Resolution Service is a ground based collision avoidance system to be implemented in the...capability. A ground based computer processes the data and continuously provides proximity warning information and, when necessary, resolution advisories to...of ground- based air traffic control which provides proximity warning and separation services to uncontrolled aircraft in a given region of airspace. it

Navigation - Project CAPE Teaching Module.

ERIC Educational Resources Information Center

Caldwell, Nadine; May, Charlaron

Ten lessons are included in this interdisciplinary unit on navigation, designed to supplement fifth and sixth grade social studies and science curricula. Each lesson includes: (1) lesson concepts; (2) competency goals; (3) objectives; (4) materials; (5) list of key vocabulary words; (6) background information; (7) teacher preparation; (8) list of…

Evaluation of the Terminal Area Precision Scheduling and Spacing System for Performance-Based Navigation Arrivals

NASA Technical Reports Server (NTRS)

Jung, Jaewoo; Swenson, Harry; Thipphavong, Jane; Martin, Lynne Hazel; Chen, Liang; Nguyen, Jimmy

2013-01-01

The growth of global demand for air transportation has put increasing strain on the nation's air traffic management system. To relieve this strain, the International Civil Aviation Organization has urged all nations to adopt Performance-Based Navigation (PBN), which can help to reduce air traffic congestion, decrease aviation fuel consumption, and protect the environment. NASA has developed a Terminal Area Precision Scheduling and Spacing (TAPSS) system that can support increased use of PBN during periods of high traffic, while supporting fuel-efficient, continuous descent approaches. In the original development of this system, arrival aircraft are assigned fuel-efficient Area Navigation (RNAV) Standard Terminal Arrival Routes before their initial descent from cruise, with routing defined to a specific runway. The system also determines precise schedules for these aircraft that facilitate continuous descent through the assigned routes. To meet these schedules, controllers are given a set of advisory tools to precisely control aircraft. The TAPSS system has been evaluated in a series of human-in-the-loop (HITL) air traffic simulations during 2010 and 2011. Results indicated increased airport arrival throughput up to 10 over current operations, and maintained fuel-efficient aircraft decent profiles from the initial descent to landing with reduced controller workload. This paper focuses on results from a joint NASA and FAA HITL simulation conducted in 2012. Due to the FAA rollout of the advance terminal area PBN procedures at mid-sized airports first, the TAPSS system was modified to manage arrival aircraft as they entered Terminal Radar Approach Control (TRACON). Dallas-Love Field airport (DAL) was selected by the FAA as a representative mid-sized airport within a constrained TRACON airspace due to the close proximity of a major airport, in this case Dallas-Ft Worth International Airport, one of the busiest in the world. To address this constraint, RNAV routes and

Expected Navigation Flight Performance for the Magnetospheric Multiscale (MMS) Mission

NASA Technical Reports Server (NTRS)

Olson, Corwin; Wright, Cinnamon; Long, Anne

2012-01-01

The Magnetospheric Multiscale (MMS) mission consists of four formation-flying spacecraft placed in highly eccentric elliptical orbits about the Earth. The primary scientific mission objective is to study magnetic reconnection within the Earth s magnetosphere. The baseline navigation concept is the independent estimation of each spacecraft state using GPS pseudorange measurements (referenced to an onboard Ultra Stable Oscillator) and accelerometer measurements during maneuvers. State estimation for the MMS spacecraft is performed onboard each vehicle using the Goddard Enhanced Onboard Navigation System, which is embedded in the Navigator GPS receiver. This paper describes the latest efforts to characterize expected navigation flight performance using upgraded simulation models derived from recent analyses.

Annual report of the National Advisory Committee for Aeronautics (6th).administrative report including Technical Reports nos. 83 to 110

NASA Technical Reports Server (NTRS)

1921-01-01

Report includes the National Advisory Committee for Aeronautics letter of submittal to the President, Congressional report, summaries of the committee's activities and research accomplished, expenditures, House of Representatives bill 14061, a copy of the bill introduced to the House of Representatives to regulate air navigation, and a compilation of technical reports produced.

77 FR 30289 - Federal Advisory Committee Act; Technological Advisory Council

Federal Register 2010, 2011, 2012, 2013, 2014

2012-05-22

... FEDERAL COMMUNICATIONS COMMISSION Federal Advisory Committee Act; Technological Advisory Council... Communications Commission's (FCC) Technological Advisory Council will hold a meeting on Wednesday, June 27, 2012... INFORMATION: The FCC Technological Advisory Council proposed a new work agenda for the [[Page 30290

Private Graphs - Access Rights on Graphs for Seamless Navigation

NASA Astrophysics Data System (ADS)

Dorner, W.; Hau, F.; Pagany, R.

2016-06-01

After the success of GNSS (Global Navigational Satellite Systems) and navigation services for public streets, indoor seems to be the next big development in navigational services, relying on RTLS - Real Time Locating Services (e.g. WIFI) and allowing seamless navigation. In contrast to navigation and routing services on public streets, seamless navigation will cause an additional challenge: how to make routing data accessible to defined users or restrict access rights for defined areas or only to parts of the graph to a defined user group? The paper will present case studies and data from literature, where seamless and especially indoor navigation solutions are presented (hospitals, industrial complexes, building sites), but the problem of restricted access rights was only touched from a real world, but not a technical perspective. The analysis of case studies will show, that the objective of navigation and the different target groups for navigation solutions will demand well defined access rights and require solutions, how to make only parts of a graph to a user or application available to solve a navigational task. The paper will therefore introduce the concept of private graphs, which is defined as a graph for navigational purposes covering the street, road or floor network of an area behind a public street and suggest different approaches how to make graph data for navigational purposes available considering access rights and data protection, privacy and security issues as well.

Autonomous GPS/INS navigation experiment for Space Transfer Vehicle (STV)

NASA Technical Reports Server (NTRS)

Upadhyay, Triveni N.; Cotterill, Stephen; Deaton, A. Wayne

1991-01-01

An experiment to validate the concept of developing an autonomous integrated spacecraft navigation system using on board Global Positioning System (GPS) and Inertial Navigation System (INS) measurements is described. The feasibility of integrating GPS measurements with INS measurements to provide a total improvement in spacecraft navigation performance, i.e. improvement in position, velocity and attitude information, was previously demonstrated. An important aspect of this research is the automatic real time reconfiguration capability of the system designed to respond to changes in a spacecraft mission under the control of an expert system.

Enabling Communication and Navigation Technologies for Future Near Earth Science Missions

NASA Technical Reports Server (NTRS)

Israel, David J.; Heckler, Greg; Menrad, Robert J.; Hudiburg, John J.; Boroson, Don M.; Robinson, Bryan S.; Cornwell, Donald M.

2016-01-01

In 2015, the Earth Regimes Network Evolution Study (ERNESt) Team proposed a fundamentally new architectural concept, with enabling technologies, that defines an evolutionary pathway out to the 2040 timeframe in which an increasing user community comprised of more diverse space science and exploration missions can be supported. The architectural concept evolves the current instantiations of the Near Earth Network and Space Network through implementation of select technologies resulting in a global communication and navigation network that provides communication and navigation services to a wide range of space users in the Near Earth regime, defined as an Earth-centered sphere with radius of 2M Km. The enabling technologies include: High Rate Optical Communications, Optical Multiple Access (OMA), Delay Tolerant Networking (DTN), User Initiated Services (UIS), and advanced Position, Navigation, and Timing technology (PNT). This paper describes this new architecture, the key technologies that enable it and their current technology readiness levels. Examples of science missions that could be enabled by the technologies and the projected operational benefits of the architecture concept to missions are also described.

U.S. Space Shuttle GPS navigation capability for all mission phases

NASA Technical Reports Server (NTRS)

Kachmar, Peter; Chu, William; Montez, Moises

1993-01-01

Incorporating a GPS capability on the Space Shuttle presented unique system integration design considerations and has led to an integration concept that has minimum impact on the existing Shuttle hardware and software systems. This paper presents the Space Shuttle GPS integrated design and the concepts used in implementing this GPS capability. The major focus of the paper is on the modifications that will be made to the navigation systems in the Space Shuttle General Purpose Computers (GPC) and on the Operational Requirements of the integrated GPS/GPC system. Shuttle navigation system architecture, functions and operations are discussed for the current system and with the GPS integrated navigation capability. The GPS system integration design presented in this paper has been formally submitted to the Shuttle Avionics Software Control Board for implementation in the on-board GPC software.

TDRSS Onboard Navigation System (TONS) experiment for the Explorer Platform (EP)

NASA Astrophysics Data System (ADS)

Gramling, C. J.; Hornstein, R. S.; Long, A. C.; Samii, M. V.; Elrod, B. D.

A TDRSS Onboard Navigation System (TONS) is currently being developed by NASA to provide a high-accuracy autonomous spacecraft navigation capability for users of TDRSS and its successor, the Advanced TDRSS. A TONS experiment will be performed in conjunction with the Explorer Platform (EP)/EUV Explorer mission to flight-qualify TONS Block I. This paper presents an overview of TDRSS on-board navigation goals and plans and the technical objectives of the TONS experiment. The operations concept of the experiment is described, including the characteristics of the ultrastable oscillator, the Doppler extractor, the signal-acquisition process, the TONS ground-support system, and the navigation flight software. A description of the on-board navigation algorithms and the rationale for their selection is also presented.

Understanding conflict-resolution taskload: Implementing advisory conflict-detection and resolution algorithms in an airspace

NASA Astrophysics Data System (ADS)

Vela, Adan Ernesto

2011-12-01

From 2010 to 2030, the number of instrument flight rules aircraft operations handled by Federal Aviation Administration en route traffic centers is predicted to increase from approximately 39 million flights to 64 million flights. The projected growth in air transportation demand is likely to result in traffic levels that exceed the abilities of the unaided air traffic controller in managing, separating, and providing services to aircraft. Consequently, the Federal Aviation Administration, and other air navigation service providers around the world, are making several efforts to improve the capacity and throughput of existing airspaces. Ultimately, the stated goal of the Federal Aviation Administration is to triple the available capacity of the National Airspace System by 2025. In an effort to satisfy air traffic demand through the increase of airspace capacity, air navigation service providers are considering the inclusion of advisory conflict-detection and resolution systems. In a human-in-the-loop framework, advisory conflict-detection and resolution decision-support tools identify potential conflicts and propose resolution commands for the air traffic controller to verify and issue to aircraft. A number of researchers and air navigation service providers hypothesize that the inclusion of combined conflict-detection and resolution tools into air traffic control systems will reduce or transform controller workload and enable the required increases in airspace capacity. In an effort to understand the potential workload implications of introducing advisory conflict-detection and resolution tools, this thesis provides a detailed study of the conflict event process and the implementation of conflict-detection and resolution algorithms. Specifically, the research presented here examines a metric of controller taskload: how many resolution commands an air traffic controller issues under the guidance of a conflict-detection and resolution decision-support tool. The goal

76 FR 22395 - Federal Advisory Committee Act; Open Internet Advisory Committee

Federal Register 2010, 2011, 2012, 2013, 2014

2011-04-21

... FEDERAL COMMUNICATIONS COMMISSION Federal Advisory Committee Act; Open Internet Advisory Committee... Advisory Committee, known as the ``Open Internet Advisory Committee'' (hereinafter ``the Committee''), is... effects of the FCC's Open Internet rules (available at http://www.fcc.gov/Daily_Releases/Daily_Business...

Environmental engineering of navigation infrastructure: a survey of existing practices, challenges, and potential opportunities.

PubMed

Fredette, Thomas J; Foran, Christy M; Brasfield, Sandra M; Suedel, Burton C

2012-01-01

Navigation infrastructure such as channels, jetties, river training structures, and lock-and-dam facilities are primary components of a safe and efficient water transportation system. Planning for such infrastructure has until recently involved efforts to minimize impacts on the environment through a standardized environmental assessment process. More recently, consistent with environmental sustainability concepts, planners have begun to consider how such projects can also be constructed with environmental enhancements. This study examined the existing institutional conditions within the US Army Corps of Engineers and cooperating federal agencies relative to incorporating environmental enhancements into navigation infrastructure projects. The study sought to (1) investigate institutional attitudes towards the environmental enhancement of navigation infrastructure (EENI) concept, (2) identify potential impediments to implementation and solutions to such impediments, (3) identify existing navigation projects designed with the express intent of enhancing environmental benefit in addition to the primary project purpose, (4) identify innovative ideas for increasing environmental benefits for navigation projects, (5) identify needs for additional technical information or research, and (6) identify laws, regulations, and policies that both support and hinder such design features. The principal investigation tool was an Internet-based survey with 53 questions. The survey captured a wide range of perspectives on the EENI concept including ideas, concerns, research needs, and relevant laws and policies. Study recommendations included further promotion of the concept of EENI to planners and designers, documentation of existing projects, initiation of pilot studies on some of the innovative ideas provided through the survey, and development of national goals and interagency agreements to facilitate implementation. Copyright © 2011 SETAC.

75 FR 8310 - Federal Advisory Committee; Transformation Advisory Group; Closed Meeting

Federal Register 2010, 2011, 2012, 2013, 2014

2010-02-24

... DEPARTMENT OF DEFENSE Office of the Secretary Federal Advisory Committee; Transformation Advisory... announces that the Transformation Advisory Group will hold a closed meeting on March 11, 2010. DATES: The... written statements to the membership of the Transformation Advisory Group at any time or in response to...

Navigation Architecture For A Space Mobile Network

NASA Technical Reports Server (NTRS)

Valdez, Jennifer E.; Ashman, Benjamin; Gramling, Cheryl; Heckler, Gregory W.; Carpenter, Russell

2016-01-01

The Tracking and Data Relay Satellite System (TDRSS) Augmentation Service for Satellites (TASS) is a proposed beacon service to provide a global, space-based GPS augmentation service based on the NASA Global Differential GPS (GDGPS) System. The TASS signal will be tied to the GPS time system and usable as an additional ranging and Doppler radiometric source. Additionally, it will provide data vital to autonomous navigation in the near Earth regime, including space weather information, TDRS ephemerides, Earth Orientation Parameters (EOP), and forward commanding capability. TASS benefits include enhancing situational awareness, enabling increased autonomy, and providing near real-time command access for user platforms. As NASA Headquarters Space Communication and Navigation Office (SCaN) begins to move away from a centralized network architecture and towards a Space Mobile Network (SMN) that allows for user initiated services, autonomous navigation will be a key part of such a system. This paper explores how a TASS beacon service enables the Space Mobile Networking paradigm, what a typical user platform would require, and provides an in-depth analysis of several navigation scenarios and operations concepts.

Interactive knowledge networks for interdisciplinary course navigation within Moodle.

PubMed

Scherl, Andre; Dethleffsen, Kathrin; Meyer, Michael

2012-12-01

Web-based hypermedia learning environments are widely used in modern education and seem particularly well suited for interdisciplinary learning. Previous work has identified guidance through these complex environments as a crucial problem of their acceptance and efficiency. We reasoned that map-based navigation might provide straightforward and effortless orientation. To achieve this, we developed a clickable and user-oriented concept map-based navigation plugin. This tool is implemented as an extension of Moodle, a widely used learning management system. It visualizes inner and interdisciplinary relations between learning objects and is generated dynamically depending on user set parameters and interactions. This plugin leaves the choice of navigation type to the user and supports direct guidance. Previously developed and evaluated face-to-face interdisciplinary learning materials bridging physiology and physics courses of a medical curriculum were integrated as learning objects, the relations of which were defined by metadata. Learning objects included text pages, self-assessments, videos, animations, and simulations. In a field study, we analyzed the effects of this learning environment on physiology and physics knowledge as well as the transfer ability of third-term medical students. Data were generated from pre- and posttest questionnaires and from tracking student navigation. Use of the hypermedia environment resulted in a significant increase of knowledge and transfer capability. Furthermore, the efficiency of learning was enhanced. We conclude that hypermedia environments based on Moodle and enriched by concept map-based navigation tools can significantly support interdisciplinary learning. Implementation of adaptivity may further strengthen this approach.

78 FR 51191 - Government-wide Travel Advisory Committee (GTAC); Public Advisory Committee Meeting

Federal Register 2010, 2011, 2012, 2013, 2014

2013-08-20

...] Government-wide Travel Advisory Committee (GTAC); Public Advisory Committee Meeting AGENCY: Office of... Travel Advisory Committee (GTAC) (the Committee), is a Federal Advisory Committee established in...: Ms. Marcerto Barr, Designated Federal Officer (DFO), Government-wide Travel Advisory Committee (GTAC...

AstroNavigation: Freely-available Online Instruction for Performing a Sight Reduction

NASA Astrophysics Data System (ADS)

Gessner Stewart, Susan; Grundstrom, Erika; Caudel, Dave

2015-08-01

A reliable method of obtaining your geographic location from observations of celestial bodies is globally available. This online learning module, developed through a collaboration between Vanderbilt University and the U.S. Naval Observatory, serves to address the need for freely-available comprehensive instruction in celestial navigation online. Specifically targeted are the steps of preforming a sight reduction to obtain a terrestrial position using this technique. Difficult concepts such as plotting on a navigational chart and the complexities of using navigation publications are facilitated through this online content delivery, rooted in effective course design principles. There is good potential in using celestial navigation as a tool for stimulating interest in astronomy given its resourcefulness and accessibility.

Modular Software for Spacecraft Navigation Using the Global Positioning System (GPS)

NASA Technical Reports Server (NTRS)

Truong, S. H.; Hartman, K. R.; Weidow, D. A.; Berry, D. L.; Oza, D. H.; Long, A. C.; Joyce, E.; Steger, W. L.

1996-01-01

The Goddard Space Flight Center Flight Dynamics and Mission Operations Divisions have jointly investigated the feasibility of engineering modular Global Positioning SYSTEM (GPS) navigation software to support both real time flight and ground postprocessing configurations. The goals of this effort are to define standard GPS data interfaces and to engineer standard, reusable navigation software components that can be used to build a broad range of GPS navigation support applications. The paper discusses the GPS modular software (GMOD) system and operations concepts, major requirements, candidate software architecture, feasibility assessment and recommended software interface standards. In additon, ongoing efforts to broaden the scope of the initial study and to develop modular software to support autonomous navigation using GPS are addressed,

Cameras Improve Navigation for Pilots, Drivers

NASA Technical Reports Server (NTRS)

2012-01-01

Advanced Scientific Concepts Inc. (ASC), of Santa Barbara, California, received SBIR awards and other funding from the Jet Propulsion Laboratory, Johnson Space Center, and Langley Research Center to develop and refine its 3D flash LIDAR technologies for space applications. Today, ASC's NASA-derived technology is sold to assist with collision avoidance, navigation, and object tracking.

76 FR 71033 - Federal Advisory Committee Act; Technological Advisory Council

Federal Register 2010, 2011, 2012, 2013, 2014

2011-11-16

... FEDERAL COMMUNICATIONS COMMISSION Federal Advisory Committee Act; Technological Advisory Council... Communications Commission's (FCC) Technological Advisory Council will hold a meeting on Tuesday, December 20... in progress and discuss potential agendas for the coming year. The FCC will attempt to accommodate as...

Sensitivity of Magnetospheric Multi-Scale (MMS) Mission Navigation Accuracy to Major Error Sources

NASA Technical Reports Server (NTRS)

Olson, Corwin; Long, Anne; Car[emter. Russell

2011-01-01

The Magnetospheric Multiscale (MMS) mission consists of four satellites flying in formation in highly elliptical orbits about the Earth, with a primary objective of studying magnetic reconnection. The baseline navigation concept is independent estimation of each spacecraft state using GPS pseudorange measurements referenced to an Ultra Stable Oscillator (USO) with accelerometer measurements included during maneuvers. MMS state estimation is performed onboard each spacecraft using the Goddard Enhanced Onboard Navigation System (GEONS), which is embedded in the Navigator GPS receiver. This paper describes the sensitivity of MMS navigation performance to two major error sources: USO clock errors and thrust acceleration knowledge errors.

78 FR 69991 - Advisory Committee; Veterinary Medicine Advisory Committee; Termination

Federal Register 2010, 2011, 2012, 2013, 2014

2013-11-22

... DEPARTMENT OF HEALTH AND HUMAN SERVICES Food and Drug Administration 21 CFR Part 14 [Docket No. FDA-2013-N-1380] Advisory Committee; Veterinary Medicine Advisory Committee; Termination AGENCY: Food... announcing the termination of the Veterinary Medicine Advisory Committee. This document removes the...

How the structure of Wikipedia articles influences user navigation.

PubMed

Lamprecht, Daniel; Lerman, Kristina; Helic, Denis; Strohmaier, Markus

2017-01-02

In this work we study how people navigate the information network of Wikipedia and investigate (i) free-form navigation by studying all clicks within the English Wikipedia over an entire month and (ii) goal-directed Wikipedia navigation by analyzing wikigames, where users are challenged to retrieve articles by following links. To study how the organization of Wikipedia articles in terms of layout and links affects navigation behavior, we first investigate the characteristics of the structural organization and of hyperlinks in Wikipedia and then evaluate link selection models based on article structure and other potential influences in navigation, such as the generality of an article's topic. In free-form Wikipedia navigation, covering all Wikipedia usage scenarios, we find that click choices can be best modeled by a bias towards article structure, such as a tendency to click links located in the lead section. For the goal-directed navigation of wikigames, our findings confirm the zoom-out and the homing-in phases identified by previous work, where users are guided by generality at first and textual similarity to the target later. However, our interpretation of the link selection models accentuates that article structure is the best explanation for the navigation paths in all except these initial and final stages. Overall, we find evidence that users more frequently click on links that are located close to the top of an article. The structure of Wikipedia articles, which places links to more general concepts near the top, supports navigation by allowing users to quickly find the better-connected articles that facilitate navigation. Our results highlight the importance of article structure and link position in Wikipedia navigation and suggest that better organization of information can help make information networks more navigable.

How the structure of Wikipedia articles influences user navigation

NASA Astrophysics Data System (ADS)

Lamprecht, Daniel; Lerman, Kristina; Helic, Denis; Strohmaier, Markus

2017-01-01

In this work we study how people navigate the information network of Wikipedia and investigate (i) free-form navigation by studying all clicks within the English Wikipedia over an entire month and (ii) goal-directed Wikipedia navigation by analyzing wikigames, where users are challenged to retrieve articles by following links. To study how the organization of Wikipedia articles in terms of layout and links affects navigation behavior, we first investigate the characteristics of the structural organization and of hyperlinks in Wikipedia and then evaluate link selection models based on article structure and other potential influences in navigation, such as the generality of an article's topic. In free-form Wikipedia navigation, covering all Wikipedia usage scenarios, we find that click choices can be best modeled by a bias towards article structure, such as a tendency to click links located in the lead section. For the goal-directed navigation of wikigames, our findings confirm the zoom-out and the homing-in phases identified by previous work, where users are guided by generality at first and textual similarity to the target later. However, our interpretation of the link selection models accentuates that article structure is the best explanation for the navigation paths in all except these initial and final stages. Overall, we find evidence that users more frequently click on links that are located close to the top of an article. The structure of Wikipedia articles, which places links to more general concepts near the top, supports navigation by allowing users to quickly find the better-connected articles that facilitate navigation. Our results highlight the importance of article structure and link position in Wikipedia navigation and suggest that better organization of information can help make information networks more navigable.

How the structure of Wikipedia articles influences user navigation

PubMed Central

Lamprecht, Daniel; Lerman, Kristina; Helic, Denis; Strohmaier, Markus

2017-01-01

In this work we study how people navigate the information network of Wikipedia and investigate (i) free-form navigation by studying all clicks within the English Wikipedia over an entire month and (ii) goal-directed Wikipedia navigation by analyzing wikigames, where users are challenged to retrieve articles by following links. To study how the organization of Wikipedia articles in terms of layout and links affects navigation behavior, we first investigate the characteristics of the structural organization and of hyperlinks in Wikipedia and then evaluate link selection models based on article structure and other potential influences in navigation, such as the generality of an article's topic. In free-form Wikipedia navigation, covering all Wikipedia usage scenarios, we find that click choices can be best modeled by a bias towards article structure, such as a tendency to click links located in the lead section. For the goal-directed navigation of wikigames, our findings confirm the zoom-out and the homing-in phases identified by previous work, where users are guided by generality at first and textual similarity to the target later. However, our interpretation of the link selection models accentuates that article structure is the best explanation for the navigation paths in all except these initial and final stages. Overall, we find evidence that users more frequently click on links that are located close to the top of an article. The structure of Wikipedia articles, which places links to more general concepts near the top, supports navigation by allowing users to quickly find the better-connected articles that facilitate navigation. Our results highlight the importance of article structure and link position in Wikipedia navigation and suggest that better organization of information can help make information networks more navigable. PMID:28670171

Insect-Inspired Optical-Flow Navigation Sensors

NASA Technical Reports Server (NTRS)

Thakoor, Sarita; Morookian, John M.; Chahl, Javan; Soccol, Dean; Hines, Butler; Zornetzer, Steven

2005-01-01

Integrated circuits that exploit optical flow to sense motions of computer mice on or near surfaces ( optical mouse chips ) are used as navigation sensors in a class of small flying robots now undergoing development for potential use in such applications as exploration, search, and surveillance. The basic principles of these robots were described briefly in Insect-Inspired Flight Control for Small Flying Robots (NPO-30545), NASA Tech Briefs, Vol. 29, No. 1 (January 2005), page 61. To recapitulate from the cited prior article: The concept of optical flow can be defined, loosely, as the use of texture in images as a source of motion cues. The flight-control and navigation systems of these robots are inspired largely by the designs and functions of the vision systems and brains of insects, which have been demonstrated to utilize optical flow (as detected by their eyes and brains) resulting from their own motions in the environment. Optical flow has been shown to be very effective as a means of avoiding obstacles and controlling speeds and altitudes in robotic navigation. Prior systems used in experiments on navigating by means of optical flow have involved the use of panoramic optics, high-resolution image sensors, and programmable imagedata- processing computers.

Navigation in the electronic health record: A review of the safety and usability literature.

PubMed

Roman, Lisette C; Ancker, Jessica S; Johnson, Stephen B; Senathirajah, Yalini

2017-03-01

Inefficient navigation in electronic health records has been shown to increase users' cognitive load, which may increase potential for errors, reduce efficiency, and increase fatigue. However, navigation has received insufficient recognition and attention in the electronic health record (EHR) literature as an independent construct and contributor to overall usability. Our aims in this literature review were to (1) assess the prevalence of navigation-related topics within the EHR usability and safety research literature, (2) categorize types of navigation actions within the EHR, (3) capture relationships between these navigation actions and usability principles, and (4) collect terms and concepts related to EHR navigation. Our goal was to improve access to navigation-related research in usability. We applied scoping literature review search methods with the assistance of a reference librarian to identify articles published since 1996 that reported evaluation of the usability or safety of an EHR user interface via user test, analytic methods, or inspection methods. The 4336 references collected from MEDLINE, EMBASE, Engineering Village, and expert referrals were de-duplicated and screened for relevance, and navigation-related concepts were abstracted from the 21 articles eligible for review using a standard abstraction form. Of the 21 eligible articles, 20 (95%) mentioned navigation in results and discussion of usability evaluations. Navigation between pages of the EHR was the more frequently documented type of navigation (86%) compared to navigation within a single page (14%). Navigation actions (e.g., scrolling through a medication list) were frequently linked to specific usability heuristic violations, among which flexibility and efficiency of use, recognition rather than recall, and error prevention were most common. Discussion of navigation was prevalent in results across all types of evaluation methods among the articles reviewed. Navigating between multiple

75 FR 43156 - Federal Advisory Committee; Missile Defense Advisory Committee

Federal Register 2010, 2011, 2012, 2013, 2014

2010-07-23

... DEPARTMENT OF DEFENSE Office of the Secretary Federal Advisory Committee; Missile Defense Advisory Committee AGENCY: Missile Defense Agency (MDA), DoD. ACTION: Notice of closed meeting. SUMMARY: Under the... Defense announces that the Missile Defense Advisory Committee will meet on August 4 and 5, 2010, in...

A Functional Description of a Digital Flight Test System for Navigation and Guidance Research in the Terminal Area

NASA Technical Reports Server (NTRS)

Hegarty, D. M.

1974-01-01

A guidance, navigation, and control system, the Simulated Shuttle Flight Test System (SS-FTS), when interfaced with existing aircraft systems, provides a research facility for studying concepts for landing the space shuttle orbiter and conventional jet aircraft. The SS-FTS, which includes a general-purpose computer, performs all computations for precisely following a prescribed approach trajectory while properly managing the vehicle energy to allow safe arrival at the runway and landing within prescribed dispersions. The system contains hardware and software provisions for navigation with several combinations of possible navigation aids that have been suggested for the shuttle. The SS-FTS can be reconfigured to study different guidance and navigation concepts by changing only the computer software, and adapted to receive different radio navigation information through minimum hardware changes. All control laws, logic, and mode interlocks reside solely in the computer software.

Striking a Balance: Academic Advising and the Advisory Working Alliance with Adult Master's-Level Credential Candidates at Regional Campuses

ERIC Educational Resources Information Center

Saunders, Cindy Franklin

2012-01-01

Purpose: The purpose of this study was to describe the advising approaches and the training received by academic advisors to form an advisory working alliance with adult master's-level credential candidates in educator preparation programs at regional campuses in Southern and Central California. This advisory working alliance concept includes: (a)…

Architectural Design for a Mars Communications and Navigation Orbital Infrastructure

NASA Technical Reports Server (NTRS)

Ceasrone R. J.; Hastrup, R. C.; Bell, D. J.; Roncoli, R. B.; Nelson, K.

1999-01-01

The planet Mars has become the focus of an intensive series of missions that span decades of time, a wide array of international agencies and an evolution from robotics to humans. The number of missions to Mars at any one time, and over a period of time, is unprecedented in the annals of space exploration. To meet the operational needs of this exploratory fleet will require the implementation of new architectural concepts for communications and navigation. To this end, NASA's Jet Propulsion Laboratory has begun to define and develop a Mars communications and navigation orbital infrastructure. This architecture will make extensive use of assets at Mars, as well as use of traditional Earth-based assets, such as the Deep Space Network, DSN. Indeed, the total system can be thought of as an extension of DSN nodes and services to the Mars in-situ region. The concept has been likened to the beginnings of an interplanetary Internet that will bring the exploration of Mars right into our living rooms. The paper will begin with a high-level overview of the concept for the Mars communications and navigation infrastructure. Next, the mission requirements will be presented. These will include the relatively near-term needs of robotic landers, rovers, ascent vehicles, balloons, airplanes, and possibly orbiting, arriving and departing spacecraft. Requirements envisioned for the human exploration of Mars will also be described. The important Mars orbit design trades on telecommunications and navigation capabilities will be summarized, and the baseline infrastructure will be described. A roadmap of NASA's plan to evolve this infrastructure over time will be shown. Finally, launch considerations and delivery to Mars will be briefly treated.

Results from Navigator GPS Flight Testing for the Magnetospheric MultiScale Mission

NASA Technical Reports Server (NTRS)

Lulich, Tyler D.; Bamford, William A.; Wintermitz, Luke M. B.; Price, Samuel R.

2012-01-01

The recent delivery of the first Goddard Space Flight Center (GSFC) Navigator Global Positioning System (GPS) receivers to the Magnetospheric MultiScale (MMS) mission spacecraft is a high water mark crowning a decade of research and development in high-altitude space-based GPS. Preceding MMS delivery, the engineering team had developed receivers to support multiple missions and mission studies, such as Low Earth Orbit (LEO) navigation for the Global Precipitation Mission (GPM), above the constellation navigation for the Geostationary Operational Environmental Satellite (GOES) proof-of-concept studies, cis-Lunar navigation with rapid re-acquisition during re-entry for the Orion Project and an orbital demonstration on the Space Shuttle during the Hubble Servicing Mission (HSM-4).

SEXTANT - Station Explorer for X-ray Timing and Navigation Technology

NASA Technical Reports Server (NTRS)

Mitchell, Jason W.; Hasouneh, Munther Abdel Hamid; Winternitz, Luke M. B.; Valdez, Jennifer E.; Price, Samuel R.; Semper, Sean R.; Yu, Wayne H.; Arzoumanian, Zaven; Ray, Paul S.; Wood, Kent S.;

Image processing and applications based on visualizing navigation service

NASA Astrophysics Data System (ADS)

Hwang, Chyi-Wen

2015-07-01

When facing the "overabundant" of semantic web information, in this paper, the researcher proposes the hierarchical classification and visualizing RIA (Rich Internet Application) navigation system: Concept Map (CM) + Semantic Structure (SS) + the Knowledge on Demand (KOD) service. The aim of the Multimedia processing and empirical applications testing, was to investigating the utility and usability of this visualizing navigation strategy in web communication design, into whether it enables the user to retrieve and construct their personal knowledge or not. Furthermore, based on the segment markets theory in the Marketing model, to propose a User Interface (UI) classification strategy and formulate a set of hypermedia design principles for further UI strategy and e-learning resources in semantic web communication. These research findings: (1) Irrespective of whether the simple declarative knowledge or the complex declarative knowledge model is used, the "CM + SS + KOD navigation system" has a better cognition effect than the "Non CM + SS + KOD navigation system". However, for the" No web design experience user", the navigation system does not have an obvious cognition effect. (2) The essential of classification in semantic web communication design: Different groups of user have a diversity of preference needs and different cognitive styles in the CM + SS + KOD navigation system.

Autonomous Navigation Error Propagation Assessment for Lunar Surface Mobility Applications

NASA Technical Reports Server (NTRS)

Welch, Bryan W.; Connolly, Joseph W.

2006-01-01

The NASA Vision for Space Exploration is focused on the return of astronauts to the Moon. While navigation systems have already been proven in the Apollo missions to the moon, the current exploration campaign will involve more extensive and extended missions requiring new concepts for lunar navigation. In this document, the results of an autonomous navigation error propagation assessment are provided. The analysis is intended to be the baseline error propagation analysis for which Earth-based and Lunar-based radiometric data are added to compare these different architecture schemes, and quantify the benefits of an integrated approach, in how they can handle lunar surface mobility applications when near the Lunar South pole or on the Lunar Farside.

Proof-of-concept of a laser mounted endoscope for touch-less navigated procedures

PubMed Central

Kral, Florian; Gueler, Oezguer; Perwoeg, Martina; Bardosi, Zoltan; Puschban, Elisabeth J; Riechelmann, Herbert; Freysinger, Wolfgang

2013-01-01

Background and Objectives During navigated procedures a tracked pointing device is used to define target structures in the patient to visualize its position in a registered radiologic data set. When working with endoscopes in minimal invasive procedures, the target region is often difficult to reach and changing instruments is disturbing in a challenging, crucial moment of the procedure. We developed a device for touch less navigation during navigated endoscopic procedures. Materials and Methods A laser beam is delivered to the tip of a tracked endoscope angled to its axis. Thereby the position of the laser spot in the video-endoscopic images changes according to the distance between the tip of the endoscope and the target structure. A mathematical function is defined by a calibration process and is used to calculate the distance between the tip of the endoscope and the target. The tracked tip of the endoscope and the calculated distance is used to visualize the laser spot in the registered radiologic data set. Results In comparison to the tracked instrument, the touch less target definition with the laser spot yielded in an over and above error of 0.12 mm. The overall application error in this experimental setup with a plastic head was 0.61 ± 0.97 mm (95% CI −1.3 to +2.5 mm). Conclusion Integrating a laser in an endoscope and then calculating the distance to a target structure by image processing of the video endoscopic images is accurate. This technology eliminates the need for tracked probes intraoperatively and therefore allows navigation to be integrated seamlessly in clinical routine. However, it is an additional chain link in the sequence of computer-assisted surgery thus influencing the application error. Lasers Surg. Med. 45:377–382, 2013. © 2013 Wiley Periodicals, Inc. PMID:23737122

2D/3D Synthetic Vision Navigation Display

NASA Technical Reports Server (NTRS)

Prinzel, Lawrence J., III; Kramer, Lynda J.; Arthur, J. J., III; Bailey, Randall E.; Sweeters, jason L.

2008-01-01

Flight-deck display software was designed and developed at NASA Langley Research Center to provide two-dimensional (2D) and three-dimensional (3D) terrain, obstacle, and flight-path perspectives on a single navigation display. The objective was to optimize the presentation of synthetic vision (SV) system technology that permits pilots to view multiple perspectives of flight-deck display symbology and 3D terrain information. Research was conducted to evaluate the efficacy of the concept. The concept has numerous unique implementation features that would permit enhanced operational concepts and efficiencies in both current and future aircraft.

Navigation. Northern New England Marine Education Project.

ERIC Educational Resources Information Center

Maine Univ., Orono. Coll. of Education.

This guide provides student practice problems which use the procedures of ship navigators to reinforce the skills of mathematics learned in the secondary school and which seek to provide examples of the application of mathematical concepts. Along with the practice problems, teacher background material is provided briefly in the body of the unit.…

Navigation.

PubMed

Wiltschko, Roswitha

2017-07-01

Experiments with migrating birds displaced during autumn migration outside their normal migration corridor reveal two different navigational strategies: adult migrants compensate for the displacement, and head towards their traditional wintering areas, whereas young first-time migrants continue in their migratory direction. Young birds are guided to their still unknown goal by a genetically coded migration program that indicates duration and direction(s) of the migratory flight by controlling the amount of migratory restlessness and the compass course(s) with respect to the geomagnetic field and celestial rotation. Adult migrants that have already wintered and are familiar with the goal area approach the goal by true navigation, specifically heading towards it and changing their course correspondingly after displacement. During their first journey, young birds experience the distribution of potential navigational factors en route and in their winter home, which allows them to truly navigate on their next migrations. The navigational factors used appear to include magnetic intensity as a component in their multi-modal navigational 'map'; olfactory input is also involved, even if it is not yet entirely clear in what way. The mechanisms of migratory birds for true navigation over long distances appear to be in principle similar to those discussed for by homing pigeons.

A full 3D-navigation system in a suitcase.

PubMed

Freysinger, W; Truppe, M J; Gunkel, A R; Thumfart, W F

2001-01-01

To reduce the impact of contemporary 3D-navigation systems on the environment of typical otorhinolaryngologic operating rooms, we demonstrate that a transfer of navigation software to modern high-power notebook computers is feasible and results in a practicable way to provide positional information to a surgeon intraoperatively. The ARTMA Virtual Patient System has been implemented on a Macintosh PowerBook G3 and, in connection with the Polhemus FASTRAK digitizer, provides intraoperative positional information during endoscopic endonasal surgery. Satisfactory intraoperative navigation has been realized in two- and three-dimensional medical image data sets (i.e., X-ray, ultrasound images, CT, and MR) and live video. This proof-of-concept study demonstrates that acceptable ergonomics and excellent performance of the system can be achieved with contemporary high-end notebook computers. Copyright 2001 Wiley-Liss, Inc.

Total Navigation in Spine Surgery; A Concise Guide to Eliminate Fluoroscopy Using a Portable Intraoperative Computed Tomography 3-Dimensional Navigation System.

PubMed

Navarro-Ramirez, Rodrigo; Lang, Gernot; Lian, Xiaofeng; Berlin, Connor; Janssen, Insa; Jada, Ajit; Alimi, Marjan; Härtl, Roger

2017-04-01

Portable intraoperative computed tomography (iCT) with integrated 3-dimensional navigation (NAV) offers new opportunities for more precise navigation in spinal surgery, eliminates radiation exposure for the surgical team, and accelerates surgical workflows. We present the concept of "total navigation" using iCT NAV in spinal surgery. Therefore, we propose a step-by-step guideline demonstrating how total navigation can eliminate fluoroscopy with time-efficient workflows integrating iCT NAV into daily practice. A prospective study was conducted on collected data from patients undergoing iCT NAV-guided spine surgery. Number of scans, radiation exposure, and workflow of iCT NAV (e.g., instrumentation, cage placement, localization) were documented. Finally, the accuracy of pedicle screws and time for instrumentation were determined. iCT NAV was successfully performed in 117 cases for various indications and in all regions of the spine. More than half (61%) of cases were performed in a minimally invasive manner. Navigation was used for skin incision, localization of index level, and verification of implant position. iCT NAV was used to evaluate neural decompression achieved in spinal fusion surgeries. Total navigation eliminates fluoroscopy in 75%, thus reducing staff radiation exposure entirely. The average times for iCT NAV setup and pedicle screw insertion were 12.1 and 3.1 minutes, respectively, achieving a pedicle screw accuracy of 99%. Total navigation makes spine surgery safer and more accurate, and it enhances efficient and reproducible workflows. Fluoroscopy and radiation exposure for the surgical staff can be eliminated in the majority of cases. Copyright © 2017 Elsevier Inc. All rights reserved.

International Advisory Councils and Internationalization of Governance: A Qualitative Analysis

ERIC Educational Resources Information Center

Mihut, Georgiana; Altbach, Philip G.; Salmi, Jamil

2016-01-01

This paper discusses the emergence of international advisory councils (IACs) at universities around the world and introduces the concept of internationalization of governance. Global trends in the field of higher education, such as the quest to create world-class universities and advance in global rankings, the rise of new public management, and…

76 FR 2133 - National Capital Memorial Advisory Commission; Notice of Public Meeting

Federal Register 2010, 2011, 2012, 2013, 2014

2011-01-12

... DEPARTMENT OF THE INTERIOR National Park Service [NPS-NCR-NACA-1210-6447; 3086-SYM ] National Capital Memorial Advisory Commission; Notice of Public Meeting AGENCY: National Park Service, Interior... Dwight D. Eisenhower Memorial Commission on design concepts for the Dwight D. Eisenhower Memorial...

Development of a GPS/INS/MAG navigation system and waypoint navigator for a VTOL UAV

NASA Astrophysics Data System (ADS)

Meister, Oliver; Mönikes, Ralf; Wendel, Jan; Frietsch, Natalie; Schlaile, Christian; Trommer, Gert F.

2007-04-01

Unmanned aerial vehicles (UAV) can be used for versatile surveillance and reconnaissance missions. If a UAV is capable of flying automatically on a predefined path the range of possible applications is widened significantly. This paper addresses the development of the integrated GPS/INS/MAG navigation system and a waypoint navigator for a small vertical take-off and landing (VTOL) unmanned four-rotor helicopter with a take-off weight below 1 kg. The core of the navigation system consists of low cost inertial sensors which are continuously aided with GPS, magnetometer compass, and a barometric height information. Due to the fact, that the yaw angle becomes unobservable during hovering flight, the integration with a magnetic compass is mandatory. This integration must be robust with respect to errors caused by the terrestrial magnetic field deviation and interferences from surrounding electronic devices as well as ferrite metals. The described integration concept with a Kalman filter overcomes the problem that erroneous magnetic measurements yield to an attitude error in the roll and pitch axis. The algorithm provides long-term stable navigation information even during GPS outages which is mandatory for the flight control of the UAV. In the second part of the paper the guidance algorithms are discussed in detail. These algorithms allow the UAV to operate in a semi-autonomous mode position hold as well an complete autonomous waypoint mode. In the position hold mode the helicopter maintains its position regardless of wind disturbances which ease the pilot job during hold-and-stare missions. The autonomous waypoint navigator enable the flight outside the range of vision and beyond the range of the radio link. Flight test results of the implemented modes of operation are shown.

Differential GNSS and Vision-Based Tracking to Improve Navigation Performance in Cooperative Multi-UAV Systems.

PubMed

Vetrella, Amedeo Rodi; Fasano, Giancarmine; Accardo, Domenico; Moccia, Antonio

2016-12-17

Autonomous navigation of micro-UAVs is typically based on the integration of low cost Global Navigation Satellite System (GNSS) receivers and Micro-Electro-Mechanical Systems (MEMS)-based inertial and magnetic sensors to stabilize and control the flight. The resulting navigation performance in terms of position and attitude accuracy may not suffice for other mission needs, such as the ones relevant to fine sensor pointing. In this framework, this paper presents a cooperative UAV navigation algorithm that allows a chief vehicle, equipped with inertial and magnetic sensors, a Global Positioning System (GPS) receiver, and a vision system, to improve its navigation performance (in real time or in the post processing phase) exploiting formation flying deputy vehicles equipped with GPS receivers. The focus is set on outdoor environments and the key concept is to exploit differential GPS among vehicles and vision-based tracking (DGPS/Vision) to build a virtual additional navigation sensor whose information is then integrated in a sensor fusion algorithm based on an Extended Kalman Filter. The developed concept and processing architecture are described, with a focus on DGPS/Vision attitude determination algorithm. Performance assessment is carried out on the basis of both numerical simulations and flight tests. In the latter ones, navigation estimates derived from the DGPS/Vision approach are compared with those provided by the onboard autopilot system of a customized quadrotor. The analysis shows the potential of the developed approach, mainly deriving from the possibility to exploit magnetic- and inertial-independent accurate attitude information.

CCDS concept paper: Delta-DOR

NASA Technical Reports Server (NTRS)

Berry, David S.; Broder, James S.

2005-01-01

This Concept Paper proposes the development of Consultative Committee for Space Data Systemes (CCSDS) standards for the deep space navigation technique known as 'delta-DOR' (Delta Differential One-Way Ranging).

CCSDS concept paper: Delta-DOR

NASA Technical Reports Server (NTRS)

Berry, David S.; Border, James S.

2005-01-01

This Concept Paper proposes the development of Consultative Committee for Space Data Systems (CCSDS) standards for the deep space navigation technique known as 'delta-DOR' (Delta Differential One-Way Ranging).

76 FR 52319 - Federal Advisory Committee Meeting Notice; Threat Reduction Advisory Committee

Federal Register 2010, 2011, 2012, 2013, 2014

2011-08-22

... DEPARTMENT OF DEFENSE Federal Advisory Committee Meeting Notice; Threat Reduction Advisory... committee meeting of the Threat Reduction Advisory Committee (Hereafter referred to as ``the Committee... CONTACT: Mr. William Hostyn, Defense Threat Reduction Agency/SP-ACP, 8725 John J. Kingman Road, MS 6201...

Monitoring real-time navigation processes using the automated reasoning tool (ART)

NASA Technical Reports Server (NTRS)

Maletz, M. C.; Culbert, C. J.

1985-01-01

An expert system is described for monitoring and controlling navigation processes in real-time. The ART-based system features data-driven computation, accommodation of synchronous and asynchronous data, temporal modeling for individual time intervals and chains of time intervals, and hypothetical reasoning capabilities that consider alternative interpretations of the state of navigation processes. The concept is illustrated in terms of the NAVEX system for monitoring and controlling the high speed ground navigation console for Mission Control at Johnson Space Center. The reasoning processes are outlined, including techniques used to consider alternative data interpretations. Installation of the system has permitted using a single operator, instead of three, to monitor the ascent and entry phases of a Shuttle mission.

Oral and maxillofacial surgery with computer-assisted navigation system.

PubMed

Kawachi, Homare; Kawachi, Yasuyuki; Ikeda, Chihaya; Takagi, Ryo; Katakura, Akira; Shibahara, Takahiko

2010-01-01

Intraoperative computer-assisted navigation has gained acceptance in maxillofacial surgery with applications in an increasing number of indications. We adapted a commercially available wireless passive marker system which allows calibration and tracking of virtually every instrument in maxillofacial surgery. Virtual computer-generated anatomical structures are displayed intraoperatively in a semi-immersive head-up display. Continuous observation of the operating field facilitated by computer assistance enables surgical navigation in accordance with the physician's preoperative plans. This case report documents the potential for augmented visualization concepts in surgical resection of tumors in the oral and maxillofacial region. We report a case of T3N2bM0 carcinoma of the maxillary gingival which was surgically resected with the assistance of the Stryker Navigation Cart System. This system was found to be useful in assisting preoperative planning and intraoperative monitoring.

Development of STOLAND, a versatile navigation, guidance and control system

NASA Technical Reports Server (NTRS)

Young, L. S.; Hansen, Q. M.; Rouse, W. E.; Osder, S. S.

1972-01-01

STOLAND has been developed to perform navigation, guidance, control, and flight management experiments in advanced V/STOL aircraft. The experiments have broad requirements and have dictated that STOLAND be capable of providing performance that would be realistic and equivalent to a wide range of current and future avionics systems. An integrated digital concept using modern avionics components was selected as the simplest approach to maximizing versatility and growth potential. Unique flexibility has been obtained by use of a single, general-purpose digital computer for all navigation, guidance, control, and displays computation.

Evaluation of a patient navigation program.

PubMed

Koh, Catherine; Nelson, Joan M; Cook, Paul F

2011-02-01

This study examined the value and effectiveness of a patient navigation program in terms of timeliness of access to cancer care, resolution of barriers, and satisfaction in 55 patients over a six-month period. Although not statistically significant, the time interval between diagnostic biopsy to first consultation with a cancer specialist after program implementation was reduced from an average of 14.6 days to 12.8 days. The time interval between diagnostic biopsy to initiation of cancer treatment also was reduced from 30 days to 26.2 days (not statistically significant). In addition, 71% of patient barriers were resolved by the time treatment was initiated. Overall, patients were highly satisfied with their navigated care experience. Consistent evaluation and monitoring of quality-of-care indicators are critical to further develop the program and to direct resource allocation. Oncology nurses participating in patient navigation programs should be encouraged to evaluate their importance and impact in this developing concept. Nurses should seek roles that allow them to optimize the effective use of their specialized knowledge and skills to the benefit of patients along the cancer care continuum.

77 FR 12841 - The President's Management Advisory Board (PMAB); Notification of Upcoming Public Advisory Meeting

Federal Register 2010, 2011, 2012, 2013, 2014

2012-03-02

... recommendations aimed at improving Information Technology (IT) portfolio and project management, IT vendor... President's Management Advisory Board (PMAB); Notification of Upcoming Public Advisory Meeting AGENCY...: The President's Management Advisory Board (PMAB), a Federal Advisory Committee established in...

Navigation studies based on the ubiquitous positioning technologies

NASA Astrophysics Data System (ADS)

Ye, Lei; Mi, Weijie; Wang, Defeng

2007-11-01

This paper summarized the nowadays positioning technologies, such as absolute positioning methods and relative positioning methods, indoor positioning and outdoor positioning, active positioning and passive positioning. Global Navigation Satellite System (GNSS) technologies were introduced as the omnipresent out-door positioning technologies, including GPS, GLONASS, Galileo and BD-1/2. After analysis of the shortcomings of GNSS, indoor positioning technologies were discussed and compared, including A-GPS, Cellular network, Infrared, Electromagnetism, Computer Vision Cognition, Embedded Pressure Sensor, Ultrasonic, RFID (Radio Frequency IDentification), Bluetooth, WLAN etc.. Then the concept and characteristics of Ubiquitous Positioning was proposed. After the ubiquitous positioning technologies contrast and selection followed by system engineering methodology, a navigation system model based on Incorporate Indoor-Outdoor Positioning Solution was proposed. And this model was simulated in the Galileo Demonstration for World Expo Shanghai project. In the conclusion, the prospects of ubiquitous positioning based navigation were shown, especially to satisfy the public location information acquiring requirement.

76 FR 65511 - The President's Management Advisory Board (PMAB); Notification of Upcoming Public Advisory Meeting

Federal Register 2010, 2011, 2012, 2013, 2014

2011-10-21

... management and operation, with a particular focus on productivity and the application of technology. Agenda... President's Management Advisory Board (PMAB); Notification of Upcoming Public Advisory Meeting AGENCY...: The President's Management Advisory Board (PMAB), a Federal Advisory Committee established in...

14 CFR 121.389 - Flight navigator and specialized navigation equipment.

Code of Federal Regulations, 2010 CFR

2010-01-01

... 14 Aeronautics and Space 3 2010-01-01 2010-01-01 false Flight navigator and specialized navigation equipment. 121.389 Section 121.389 Aeronautics and Space FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF....389 Flight navigator and specialized navigation equipment. (a) No certificate holder may operate an...

14 CFR 121.389 - Flight navigator and specialized navigation equipment.

Code of Federal Regulations, 2011 CFR

2011-01-01

... 14 Aeronautics and Space 3 2011-01-01 2011-01-01 false Flight navigator and specialized navigation equipment. 121.389 Section 121.389 Aeronautics and Space FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF....389 Flight navigator and specialized navigation equipment. (a) No certificate holder may operate an...

Community-based navigators for tobacco cessation treatment: a proof-of-concept pilot study among low-income smokers.

PubMed

Levinson, Arnold H; Valverde, Patricia; Garrett, Kathleen; Kimminau, Michele; Burns, Emily K; Albright, Karen; Flynn, Debra

2015-07-09

A majority of continuing smokers in the United States are socioeconomically disadvantaged (SED) adults, who are less likely than others to achieve and maintain abstinence despite comparable quit-attempt rates. A national research initiative seeks effective new strategies for increasing successful smoking cessation outcomes among SED populations. There is evidence that chronic and acute stressors may interfere with SED smokers who try to quit on their own. Patient navigators have been effectively used to improve adherence to chronic disease treatment. We designed and have pilot-tested an innovative, non-clinical community-based intervention--smoking cessation treatment navigators--to determine feasibility (acceptance, adherence, and uncontrolled results) for evaluation by randomized controlled trial (RCT). The intervention was developed for smokers among parents and other household members of inner city pre-school for low-income children. Smoking cessation treatment navigators were trained and deployed to help participants choose and adhere to evidence-based cessation treatment (EBCT). Navigators provided empathy, resource-linking, problem-solving, and motivational reinforcement. Measures included rates of study follow-up completion, EBCT utilization, navigation participation, perceived intervention quality, 7-day point abstinence and longest abstinence at three months. Both complete-case and intent-to-treat analyses were performed. Eighty-five percent of study participants (n = 40) completed final data collection. More than half (53%) enrolled in a telephone quitline and nearly three-fourths (71%) initiated nicotine replacement therapy. Participants completed a mean 3.4 navigation sessions (mean 30 min duration) and gave the intervention very high quality and satisfaction ratings. Self-reported abstinence was comparable to rates for evidence-based cessation strategies (21% among study completers, 18% using intent-to-treat analysis; median 21 days abstinent among

PATIENT NAVIGATION

PubMed Central

Wells, Kristen J.; Battaglia, Tracy A.; Dudley, Donald J.; Garcia, Roland; Greene, Amanda; Calhoun, Elizabeth; Mandelblatt, Jeanne S.; Paskett, Electra D.; Raich, Peter C.

2008-01-01

Background First implemented in 1990, patient navigation interventions are emerging as an approach to reduce cancer disparities. However, there is lack of consensus about how patient navigation is defined, what patient navigators do, and what their qualifications should be. Little is known about the efficacy and cost effectiveness of patient navigation. Methods We conducted a qualitative synthesis of published literature on cancer patient navigation. Using the keywords “navigator” or “navigation” and “cancer,” we identified 45 articles from Pubmed and reference searches that were published or in press through October 2007. 16 provided data on efficacy of navigation in improving timeliness and receipt of cancer screening, diagnostic follow-up care, and treatment. Patient navigation services are defined and differentiated from other outreach services. Results Overall there is evidence for some degree of efficacy for patient navigation in increasing participation in cancer screening and adherence to diagnostic follow-up care following an abnormality, with increases in screening ranging from 10.8% to 17.1% and increases in adherence to diagnostic follow-up care ranging from 21% to 29.2%, when compared to control patients. There is less evidence regarding efficacy of patient navigation in reducing either late stage cancer diagnosis or delays in initiation of cancer treatment or improving outcomes during cancer survivorship. There were methodological limitations in most studies, such as lack of control groups, small sample sizes, and contamination with other interventions. Conclusions Although cancer-related patient navigation interventions are being increasingly adopted across the U.S. and Canada, further research is necessary to evaluate their efficacy and cost-effectiveness in improving cancer care. PMID:18780320

78 FR 40144 - Governmentwide Travel Advisory Committee (GTAC); Upcoming Public Advisory Committee Meeting

Federal Register 2010, 2011, 2012, 2013, 2014

2013-07-03

...] Governmentwide Travel Advisory Committee (GTAC); Upcoming Public Advisory Committee Meeting AGENCY: Office of Governmentwide Policy, General Services Administration (GSA). ACTION: Notice. SUMMARY: The Governmentwide Travel... Officer (DFO), Governmentwide Travel Advisory Committee (GTAC), Office of Governmentwide Policy, General...

Space Mobile Network: A Near Earth Communication and Navigation Architecture

NASA Technical Reports Server (NTRS)

Israel, Dave J.; Heckler, Greg; Menrad, Robert J.

2016-01-01

This paper describes a Space Mobile Network architecture, the result of a recently completed NASA study exploring architectural concepts to produce a vision for the future Near Earth communications and navigation systems. The Space Mobile Network (SMN) incorporates technologies, such as Disruption Tolerant Networking (DTN) and optical communications, and new operations concepts, such as User Initiated Services, to provide user services analogous to a terrestrial smartphone user. The paper will describe the SMN Architecture, envisioned future operations concepts, opportunities for industry and international collaboration and interoperability, and technology development areas and goals.

77 FR 38065 - The President's Management Advisory Board (PMAB); Notification of Upcoming Public Advisory Meeting

Federal Register 2010, 2011, 2012, 2013, 2014

2012-06-26

... President's Management Advisory Board (PMAB); Notification of Upcoming Public Advisory Meeting AGENCY...: The President's Management Advisory Board (PMAB), a Federal Advisory Committee established in...: The meeting will be held on Wednesday, July 11, 2012, beginning at 9 a.m. eastern time, ending no...

Spatial navigation by congenitally blind individuals.

PubMed

Schinazi, Victor R; Thrash, Tyler; Chebat, Daniel-Robert

2016-01-01

Spatial navigation in the absence of vision has been investigated from a variety of perspectives and disciplines. These different approaches have progressed our understanding of spatial knowledge acquisition by blind individuals, including their abilities, strategies, and corresponding mental representations. In this review, we propose a framework for investigating differences in spatial knowledge acquisition by blind and sighted people consisting of three longitudinal models (i.e., convergent, cumulative, and persistent). Recent advances in neuroscience and technological devices have provided novel insights into the different neural mechanisms underlying spatial navigation by blind and sighted people and the potential for functional reorganization. Despite these advances, there is still a lack of consensus regarding the extent to which locomotion and wayfinding depend on amodal spatial representations. This challenge largely stems from methodological limitations such as heterogeneity in the blind population and terminological ambiguity related to the concept of cognitive maps. Coupled with an over-reliance on potential technological solutions, the field has diffused into theoretical and applied branches that do not always communicate. Here, we review research on navigation by congenitally blind individuals with an emphasis on behavioral and neuroscientific evidence, as well as the potential of technological assistance. Throughout the article, we emphasize the need to disentangle strategy choice and performance when discussing the navigation abilities of the blind population. For further resources related to this article, please visit the WIREs website. © 2015 The Authors. WIREs Cognitive Science published by Wiley Periodicals, Inc.

Area navigation and required navigation performance procedures and depictions

DOT National Transportation Integrated Search

2012-09-30

Area navigation (RNAV) and required navigation performance (RNP) procedures are fundamental to the implementation of a performance based navigation (PBN) system, which is a key enabling technology for the Next Generation Air Transportation System (Ne...

Navigation and guidance requirements for commercial VTOL operations

NASA Technical Reports Server (NTRS)

Hoffman, W. C.; Hollister, W. M.; Howell, J. D.

1974-01-01

The NASA Langley Research Center (LaRC) has undertaken a research program to develop the navigation, guidance, control, and flight management technology base needed by Government and industry in establishing systems design concepts and operating procedures for VTOL short-haul transportation systems in the 1980s time period. The VALT (VTOL Automatic Landing Technology) Program encompasses the investigation of operating systems and piloting techniques associated with VTOL operations under all-weather conditions from downtown vertiports; the definition of terminal air traffic and airspace requirements; and the development of avionics including navigation, guidance, controls, and displays for automated takeoff, cruise, and landing operations. The program includes requirements analyses, design studies, systems development, ground simulation, and flight validation efforts.

Possible Origin of Efficient Navigation in Small Worlds

NASA Astrophysics Data System (ADS)

Hu, Yanqing; Wang, Yougui; Li, Daqing; Havlin, Shlomo; di, Zengru

2011-03-01

The small-world phenomenon is one of the most important properties found in social networks. It includes both short path lengths and efficient navigation between two individuals. It is found by Kleinberg that navigation is efficient only if the probability density distribution of an individual to have a friend at distance r scales as P(r)˜r-1. Although this spatial scaling is found in many empirical studies, the origin of how this scaling emerges is still missing. In this Letter, we propose the origin of this scaling law using the concept of entropy from statistical physics and show that this scaling is the result of optimization of collecting information in social networks.

Differential GNSS and Vision-Based Tracking to Improve Navigation Performance in Cooperative Multi-UAV Systems

PubMed Central

Vetrella, Amedeo Rodi; Fasano, Giancarmine; Accardo, Domenico; Moccia, Antonio

2016-01-01

Autonomous navigation of micro-UAVs is typically based on the integration of low cost Global Navigation Satellite System (GNSS) receivers and Micro-Electro-Mechanical Systems (MEMS)-based inertial and magnetic sensors to stabilize and control the flight. The resulting navigation performance in terms of position and attitude accuracy may not suffice for other mission needs, such as the ones relevant to fine sensor pointing. In this framework, this paper presents a cooperative UAV navigation algorithm that allows a chief vehicle, equipped with inertial and magnetic sensors, a Global Positioning System (GPS) receiver, and a vision system, to improve its navigation performance (in real time or in the post processing phase) exploiting formation flying deputy vehicles equipped with GPS receivers. The focus is set on outdoor environments and the key concept is to exploit differential GPS among vehicles and vision-based tracking (DGPS/Vision) to build a virtual additional navigation sensor whose information is then integrated in a sensor fusion algorithm based on an Extended Kalman Filter. The developed concept and processing architecture are described, with a focus on DGPS/Vision attitude determination algorithm. Performance assessment is carried out on the basis of both numerical simulations and flight tests. In the latter ones, navigation estimates derived from the DGPS/Vision approach are compared with those provided by the onboard autopilot system of a customized quadrotor. The analysis shows the potential of the developed approach, mainly deriving from the possibility to exploit magnetic- and inertial-independent accurate attitude information. PMID:27999318

75 FR 81245 - Federal Advisory Committee; Defense Intelligence Agency Advisory Board; Closed Meeting

Federal Register 2010, 2011, 2012, 2013, 2014

2010-12-27

... DEPARTMENT OF DEFENSE Office of the Secretary Federal Advisory Committee; Defense Intelligence Agency Advisory Board; Closed Meeting AGENCY: Defense Intelligence Agency, DoD. ACTION: Notice. SUMMARY... Defense announces that Defense Intelligence Agency Advisory Board and two of its subcommittees will meet...

75 FR 24926 - Federal Advisory Committee; Defense Intelligence Agency Advisory Board; Closed Meeting

Federal Register 2010, 2011, 2012, 2013, 2014

2010-05-06

... DEPARTMENT OF DEFENSE Office of the Secretary Federal Advisory Committee; Defense Intelligence Agency Advisory Board; Closed Meeting AGENCY: Defense Intelligence Agency, DoD. ACTION: Meeting notice... Department of Defense announces that Defense Intelligence Agency Advisory Board, and its subcommittees, will...

76 FR 41220 - Federal Advisory Committee; Defense Intelligence Agency Advisory Board; Closed Meeting

Federal Register 2010, 2011, 2012, 2013, 2014

2011-07-13

... DEPARTMENT OF DEFENSE Office of the Secretary Federal Advisory Committee; Defense Intelligence Agency Advisory Board; Closed Meeting AGENCY: Defense Intelligence Agency, DoD. ACTION: Meeting notice... Department of Defense announces that Defense Intelligence Agency Advisory Board and two of its subcommittees...

Applying Required Navigation Performance Concept for Traffic Management of Small Unmanned Aircraft Systems

NASA Technical Reports Server (NTRS)

Jung, Jaewoo; D'Souza, Sarah N.; Johnson, Marcus A.; Ishihara, Abraham K.; Modi, Hemil C.; Nikaido, Ben; Hasseeb, Hashmatullah

2016-01-01

In anticipation of a rapid increase in the number of civil Unmanned Aircraft System(UAS) operations, NASA is researching prototype technologies for a UAS Traffic Management (UTM) system that will investigate airspace integration requirements for enabling safe, efficient low-altitude operations. One aspect a UTM system must consider is the correlation between UAS operations (such as vehicles, operation areas and durations), UAS performance requirements, and the risk to people and property in the operational area. This paper investigates the potential application of the International Civil Aviation Organizations (ICAO) Required Navigation Performance (RNP) concept to relate operational risk with trajectory conformance requirements. The approach is to first define a method to quantify operational risk and then define the RNP level requirement as a function of the operational risk. Greater operational risk corresponds to more accurate RNP level, or smaller tolerable Total System Error (TSE). Data from 19 small UAS flights are used to develop and validate a formula that defines this relationship. An approach to assessing UAS-RNP conformance capability using vehicle modeling and wind field simulation is developed to investigate how this formula may be applied in a future UTM system. The results indicate the modeled vehicles flight path is robust to the simulated wind variation, and it can meet RNP level requirements calculated by the formula. The results also indicate how vehicle-modeling fidelity may be improved to adequately verify assessed RNP level.

Navigation Architecture for a Space Mobile Network

NASA Technical Reports Server (NTRS)

Valdez, Jennifer E.; Ashman, Benjamin; Gramling, Cheryl; Heckler, Gregory W.; Carpenter, Russell

2016-01-01

The Tracking and Data Relay Satellite System (TDRSS) Augmentation Service for Satellites (TASS) is a proposed beacon service to provide a global, space based GPS augmentation service based on the NASA Global Differential GPS (GDGPS) System. The TASS signal will be tied to the GPS time system and usable as an additional ranging and Doppler radiometric source. Additionally, it will provide data vital to autonomous navigation in the near Earth regime, including space weather information, TDRS ephemerides, Earth Orientation Parameters (EOP), and forward commanding capability. TASS benefits include enhancing situational awareness, enabling increased autonomy, and providing near real-time command access for user platforms. As NASA Headquarters' Space Communication and Navigation Office (SCaN) begins to move away from a centralized network architecture and towards a Space Mobile Network (SMN) that allows for user initiated services, autonomous navigation will be a key part of such a system. This paper explores how a TASS beacon service enables the Space Mobile Networking paradigm, what a typical user platform would require, and provides an in-depth analysis of several navigation scenarios and operations concepts. This paper provides an overview of the TASS beacon and its role within the SMN and user community. Supporting navigation analysis is presented for two user mission scenarios: an Earth observing spacecraft in low earth orbit (LEO), and a highly elliptical spacecraft in a lunar resonance orbit. These diverse flight scenarios indicate the breadth of applicability of the TASS beacon for upcoming users within the current network architecture and in the SMN.

78 FR 60863 - Threat Reduction Advisory Committee; Notice of Federal Advisory Committee Meeting

Federal Register 2010, 2011, 2012, 2013, 2014

2013-10-02

... DEPARTMENT OF DEFENSE Office of the Secretary Threat Reduction Advisory Committee; Notice of... Defense announces the following Federal advisory committee meeting of the Threat Reduction Advisory... Springs, CO. FOR FURTHER INFORMATION CONTACT: Mr. William Hostyn, DoD, Defense Threat Reduction Agency/J2...

Sex differences in virtual navigation influenced by scale and navigation experience.

PubMed

Padilla, Lace M; Creem-Regehr, Sarah H; Stefanucci, Jeanine K; Cashdan, Elizabeth A

2017-04-01

The Morris water maze is a spatial abilities test adapted from the animal spatial cognition literature and has been studied in the context of sex differences in humans. This is because its standard design, which manipulates proximal (close) and distal (far) cues, applies to human navigation. However, virtual Morris water mazes test navigation skills on a scale that is vastly smaller than natural human navigation. Many researchers have argued that navigating in large and small scales is fundamentally different, and small-scale navigation might not simulate natural human navigation. Other work has suggested that navigation experience could influence spatial skills. To address the question of how individual differences influence navigational abilities in differently scaled environments, we employed both a large- (146.4 m in diameter) and a traditional- (36.6 m in diameter) scaled virtual Morris water maze along with a novel measure of navigation experience (lifetime mobility). We found sex differences on the small maze in the distal cue condition only, but in both cue-conditions on the large maze. Also, individual differences in navigation experience modulated navigation performance on the virtual water maze, showing that higher mobility was related to better performance with proximal cues for only females on the small maze, but for both males and females on the large maze.

78 FR 29334 - Threat Reduction Advisory Committee; Notice of Federal Advisory Committee Meeting

Federal Register 2010, 2011, 2012, 2013, 2014

2013-05-20

... DEPARTMENT OF DEFENSE Office of the Secretary Threat Reduction Advisory Committee; Notice of... Defense announces the following Federal advisory committee meeting of the Threat Reduction Advisory..., CO. FOR FURTHER INFORMATION CONTACT: Mr. William Hostyn, DoD, Defense Threat Reduction Agency/J2/5/8R...

77 FR 2710 - Threat Reduction Advisory Committee; Notice of Federal Advisory Committee Meeting

Federal Register 2010, 2011, 2012, 2013, 2014

2012-01-19

... DEPARTMENT OF DEFENSE Office of the Secretary Threat Reduction Advisory Committee; Notice of... following Federal advisory committee meeting of the Threat Reduction Advisory Committee (hereafter referred... CONTACT: Mr. William Hostyn, GS-15, DoD, Defense Threat Reduction Agency/SP-ACP, 8725 John J. Kingman Road...

75 FR 37410 - Federal Advisory Committee; Defense Advisory Committee on Military Personnel Testing

Federal Register 2010, 2011, 2012, 2013, 2014

2010-06-29

... DEPARTMENT OF DEFENSE Office of the Secretary Federal Advisory Committee; Defense Advisory Committee on Military Personnel Testing AGENCY: Under Secretary of Defense for Personnel and Readiness, DoD...), and 41 CFR 102-3.150, DoD announces that the Defense Advisory Committee on Military Personnel Testing...

75 FR 63823 - Federal Advisory Committee; Defense Advisory Committee on Military Personnel Testing

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2010-10-18

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77 FR 19006 - Threat Reduction Advisory Committee; Notice of Federal Advisory Committee Meeting

Federal Register 2010, 2011, 2012, 2013, 2014

2012-03-29

... DEPARTMENT OF DEFENSE Office of the Secretary Threat Reduction Advisory Committee; Notice of... advisory committee meeting of the Threat Reduction Advisory Committee (hereafter referred to as ``the.... William Hostyn, GS-15, DoD, Defense Threat Reduction Agency/SP-ACP, 8725 John J. Kingman Road, MS 6201...

77 FR 50088 - Threat Reduction Advisory Committee; Notice of Federal Advisory Committee Meeting

Federal Register 2010, 2011, 2012, 2013, 2014

2012-08-20

... DEPARTMENT OF DEFENSE Office of the Secretary Threat Reduction Advisory Committee; Notice of... following Federal advisory committee meeting of the Threat Reduction Advisory Committee (hereafter referred... INFORMATION CONTACT: Mr. William Hostyn, GS-15, DoD, Defense Threat Reduction Agency/J2/5/8R, 8725 John J...

77 FR 69807 - Threat Reduction Advisory Committee; Notice of Federal Advisory Committee Meeting

Federal Register 2010, 2011, 2012, 2013, 2014

2012-11-21

... DEPARTMENT OF DEFENSE Office of the Secretary Threat Reduction Advisory Committee; Notice of... following Federal advisory committee meeting of the Threat Reduction Advisory Committee (hereafter referred... INFORMATION CONTACT: Mr. William Hostyn, DoD, Defense Threat Reduction Agency/J2/5/8R-ACP, 8725 John J...

Interplanetary navigation

NASA Technical Reports Server (NTRS)

Stuart, J. R.

1984-01-01

The evolution of NASA's planetary navigation techniques is traced, and radiometric and optical data types are described. Doppler navigation; the Deep Space Network; differenced two-way range techniques; differential very long base interferometry; and optical navigation are treated. The Doppler system enables a spacecraft in cruise at high absolute declination to be located within a total angular uncertainty of 1/4 microrad. The two-station range measurement provides a 1 microrad backup at low declinations. Optical data locate the spacecraft relative to the target to an angular accuracy of 5 microrad. Earth-based radio navigation and its less accurate but target-relative counterpart, optical navigation, thus form complementary measurement sources, which provide a powerful sensory system to produce high-precision orbit estimates.

76 FR 52016 - NASA International Space Station Advisory Committee and the Aerospace Safety Advisory Panel; Meeting

Federal Register 2010, 2011, 2012, 2013, 2014

2011-08-19

... NATIONAL AERONAUTICS AND SPACE ADMINISTRATION [Notice (11-074)] NASA International Space Station Advisory Committee and the Aerospace Safety Advisory Panel; Meeting AGENCY: National Aeronautics and Space... meeting of the NASA International Space Station Advisory Committee and the Aerospace Safety Advisory Panel...

4D Dynamic Required Navigation Performance Final Report

NASA Technical Reports Server (NTRS)

Finkelsztein, Daniel M.; Sturdy, James L.; Alaverdi, Omeed; Hochwarth, Joachim K.

2011-01-01

New advanced four dimensional trajectory (4DT) procedures under consideration for the Next Generation Air Transportation System (NextGen) require an aircraft to precisely navigate relative to a moving reference such as another aircraft. Examples are Self-Separation for enroute operations and Interval Management for in-trail and merging operations. The current construct of Required Navigation Performance (RNP), defined for fixed-reference-frame navigation, is not sufficiently specified to be applicable to defining performance levels of such air-to-air procedures. An extension of RNP to air-to-air navigation would enable these advanced procedures to be implemented with a specified level of performance. The objective of this research effort was to propose new 4D Dynamic RNP constructs that account for the dynamic spatial and temporal nature of Interval Management and Self-Separation, develop mathematical models of the Dynamic RNP constructs, "Required Self-Separation Performance" and "Required Interval Management Performance," and to analyze the performance characteristics of these air-to-air procedures using the newly developed models. This final report summarizes the activities led by Raytheon, in collaboration with GE Aviation and SAIC, and presents the results from this research effort to expand the RNP concept to a dynamic 4D frame of reference.

77 FR 55863 - NASA Advisory Council; Science Committee; Earth Science Subcommittee; Applied Sciences Advisory...

Federal Register 2010, 2011, 2012, 2013, 2014

2012-09-11

... NATIONAL AERONAUTICS AND SPACE ADMINISTRATION [Notice (12-072)] NASA Advisory Council; Science Committee; Earth Science Subcommittee; Applied Sciences Advisory Group Meeting AGENCY: National Aeronautics... the Applied Science Advisory Group. This Subcommittee reports to the Earth Science Subcommittee...

77 FR 61581 - Notice of Advisory Committee Closed Meeting; U.S. Strategic Command Strategic Advisory Group

Federal Register 2010, 2011, 2012, 2013, 2014

2012-10-10

.... Strategic Command Strategic Advisory Group AGENCY: Department of Defense. ACTION: Notice of Advisory... advisory committee: U.S. Strategic Command Strategic Advisory Group. DATES: November 15, 2012, from 8 a.m... Command, during the development of the Nation's strategic war plans. Agenda: Topics include: Policy Issues...

78 FR 67131 - Notice of Advisory Committee Closed Meeting; U.S. Strategic Command Strategic Advisory Group

Federal Register 2010, 2011, 2012, 2013, 2014

2013-11-08

.... Strategic Command Strategic Advisory Group AGENCY: Department of Defense. ACTION: Notice of Advisory... following Federal Advisory Committee meeting of the U.S. Strategic Command Strategic Advisory Group. DATES... issues to the Commander, U.S. Strategic Command, during the development of the Nation's strategic war...

75 FR 58387 - Notice of Issuance of Exposure Draft of a Concepts Statement on Measurement of the Elements of...

Federal Register 2010, 2011, 2012, 2013, 2014

2010-09-24

... FEDERAL ACCOUNTING STANDARDS ADVISORY BOARD Notice of Issuance of Exposure Draft of a Concepts Statement on Measurement of the Elements of Accrual-Basis Financial Statements in Periods After Initial Recording AGENCY: Federal Accounting Standards Advisory Board. ACTION: Notice. Board Action: Pursuant to 31...

New High-Altitude GPS Navigation Results from the Magnetospheric Multiscale Spacecraft and Simulations at Lunar Distances

NASA Technical Reports Server (NTRS)

Winternitz, Luke B.; Bamford, William A.; Price, Samuel R.

2017-01-01

As reported in a companion work, in its first phase, NASA's 2015 highly elliptic Magnetospheric Multiscale (MMS) mission set a record for the highest altitude operational use of on-board GPS-based navigation, returning state estimates at 12 Earth radii. In early 2017 MMS transitioned to its second phase which doubled the apogee distance to 25 Earth radii, approaching halfway to the Moon. This paper will present results for GPS observability and navigation performance achieved in MMS Phase 2. Additionally, it will provide simulation results predicting the performance of the MMS navigation system applied to a pair of concept missions at Lunar distances. These studies will demonstrate how high-sensitivity GPS (or GNSS) receivers paired with onboard navigation software, as in MMS-Navigation system, can extend the envelope of autonomous onboard GPS navigation far from the Earth.

77 FR 46802 - National Emergency Medical Services Advisory Council (NEMSAC); Notice of Federal Advisory...

Federal Register 2010, 2011, 2012, 2013, 2014

2012-08-06

...-0100] National Emergency Medical Services Advisory Council (NEMSAC); Notice of Federal Advisory... Transportation (DOT). ACTION: Meeting Notice--National Emergency Medical Services Advisory Council. SUMMARY: The... NEMSAC is to provide a nationally recognized council of emergency medical services representatives and...

Navigating surgical fluorescence cameras using near-infrared optical tracking.

PubMed

van Oosterom, Matthias; den Houting, David; van de Velde, Cornelis; van Leeuwen, Fijs

2018-05-01

Fluorescence guidance facilitates real-time intraoperative visualization of the tissue of interest. However, due to attenuation, the application of fluorescence guidance is restricted to superficial lesions. To overcome this shortcoming, we have previously applied three-dimensional surgical navigation to position the fluorescence camera in reach of the superficial fluorescent signal. Unfortunately, in open surgery, the near-infrared (NIR) optical tracking system (OTS) used for navigation also induced an interference during NIR fluorescence imaging. In an attempt to support future implementation of navigated fluorescence cameras, different aspects of this interference were characterized and solutions were sought after. Two commercial fluorescence cameras for open surgery were studied in (surgical) phantom and human tissue setups using two different NIR OTSs and one OTS simulating light-emitting diode setup. Following the outcome of these measurements, OTS settings were optimized. Measurements indicated the OTS interference was caused by: (1) spectral overlap between the OTS light and camera, (2) OTS light intensity, (3) OTS duty cycle, (4) OTS frequency, (5) fluorescence camera frequency, and (6) fluorescence camera sensitivity. By optimizing points 2 to 4, navigation of fluorescence cameras during open surgery could be facilitated. Optimization of the OTS and camera compatibility can be used to support navigated fluorescence guidance concepts. (2018) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE).

78 FR 49332 - National Emergency Medical Services Advisory Council (NEMSAC); Notice of Federal Advisory...

Federal Register 2010, 2011, 2012, 2013, 2014

2013-08-13

...-0091] National Emergency Medical Services Advisory Council (NEMSAC); Notice of Federal Advisory... Transportation (DOT). ACTION: Meeting Notice--National Emergency Medical Services Advisory Council. SUMMARY: The... emergency medical services representatives and consumers, is to advise and consult with DOT and the Federal...

75 FR 60484 - NASA Advisory Council; Science Committee; Earth Science Subcommittee; Applied Sciences Advisory...

Federal Register 2010, 2011, 2012, 2013, 2014

2010-09-30

... NATIONAL AERONAUTICS AND SPACE ADMINISTRATION [Notice: (10-115)] NASA Advisory Council; Science Committee; Earth Science Subcommittee; Applied Sciences Advisory Group Meeting AGENCY: National Aeronautics...) announces a meeting of the Applied Science Advisory Group. This Subcommittee reports to the Earth Science...

Subject Matter Expert Evaluation of Multi-Flight Common Route Advisories

NASA Technical Reports Server (NTRS)

Bilimoria, Karl; Hayashi, Miwa; Sheth, Kapil S.

2017-01-01

Traffic flow management seeks to balance the demand for National Airspace System (NAS) flight resources, such as airspace and airports, with the available supply. When forecasted weather blocks nominal air traffic routes, traffic managers must re-route affected flights for weather avoidance. Depending on the nature and scope of the weather, traffic managers may use pre-coordinated re-routes such as Playbook Routes or Coded Departure Routes, or may design ad hoc local re-routes. The routes of affected flights are modified accordingly. These weather avoidance routes will, of course, be less efficient than the nominal routes due to increased flight time and fuel burn. In current traffic management operations, the transition into a weather avoidance re-routing initiative is typically implemented more aggressively than the transition out of that initiative after the weather has dissipated or moved away. For example, strategic large-scale Playbook re-routes are sometimes left in place (as initially implemented) for many hours before being lifted entirely when the weather dissipates. There is an opportunity to periodically modify the re-routing plan as weather evolves, thereby attenuating its adverse impact on flight time and fuel consumption; this is called delay recovery. Multi-Flight Common Routes (MFCR) is a NASA-developed operational concept and associated decision support tool for delay recovery, designed to assist traffic managers to efficiently update weather avoidance traffic routes after the original re-routes have become stale due to subsequent evolution of the convective weather system. MFCR groups multiple flights to reduce the number of advisories that the traffic manager needs to evaluate, and also merges these flights on a common route segment to provide an orderly flow of re-routed traffic. The advisory is presented to the appropriate traffic manager who evaluates it and has the option to modify it using MFCRs graphical user interface. If the traffic

76 FR 60811 - Notice of Advisory Committee Closed Meeting; U.S. Strategic Command Strategic Advisory Group...

Federal Register 2010, 2011, 2012, 2013, 2014

2011-09-30

... DEPARTMENT OF DEFENSE Notice of Advisory Committee Closed Meeting; U.S. Strategic Command Strategic Advisory Group; Correction AGENCY: Department of Defense. ACTION: Notice of Advisory Committee... Command Strategic Advisory Group gave notice of a meeting to be held on November 1, 2011, from 8 a.m. to 5...

75 FR 60430 - Federal Advisory Committee; Threat Reduction Advisory Committee

Federal Register 2010, 2011, 2012, 2013, 2014

2010-09-30

... DEPARTMENT OF DEFENSE Office of the Secretary Federal Advisory Committee; Threat Reduction... amended) the Department of Defense announces a meeting of the Threat Reduction Advisory Committee... Wright, Defense Threat Reduction Agency/AST, 8725 John J. Kingman Road, MS 6201, Fort Belvoir, VA 22060...

The influence of ship's stability on safety of navigation

NASA Astrophysics Data System (ADS)

Hanzu-Pazara, R.; Duse; Varsami, C.; Andrei, C.; Dumitrache, R.

2016-08-01

Ship's stability is one of the most important and complex concept about safety of ship and safety of navigation and it is governed by maritime law as well as maritime codes. The paper presents the importance of ship's intact stability as part of the general concept of ship's seaworthiness. There is always a correlation between ship’ stability and safety of ship and safety of navigation. Loss of ship's stability is presented as a threat to safety of navigation. We are going to present the causes that lead to ship stability failure and their impact on safety of navigation. A study of various ship stability casualties in heavy weather conditions are going to be presented, the causes are going to be analyzed and the possible ways of stability failures are assessed. Vessel's intact stability is a fundamental component of seaworthiness so it is in the interest of all owners/operators to learn about this topic and ensure that their vessel possesses a satisfactory level of stability in order to ensure its safety as well as that of the people on board the ship. Understanding ship's stability, trim, stress, and the basics of ship's construction is a key to keeping a ship seaworthy. The findings of this study can be beneficial to the maritime safety administrations to adopt decision-making on maritime safety management, but it is also important to carry out statistics and analysis of marine casualties to help to adopt proper safety management measures. Moreover, the study can be a useful guidance for masters and officers on board vessel in order to understand the factors that contribute to ship stability failure during the voyage not only in port during loading operations and to take preventive measures to avoid to put the ship in such a dangerous situations.

78 FR 77443 - Electricity Advisory Committee

Federal Register 2010, 2011, 2012, 2013, 2014

2013-12-23

... DEPARTMENT OF ENERGY Electricity Advisory Committee AGENCY: Office of Electricity Delivery and... announces a meeting of the Electricity Advisory Committee (EAC). The Federal Advisory Committee Act (Pub. L... at: http://energy.gov/oe/services/electricity-advisory-committee-eac . FOR FURTHER INFORMATION...

75 FR 32469 - Consumer Advisory Council; Notice of Meeting of the Consumer Advisory Council

Federal Register 2010, 2011, 2012, 2013, 2014

2010-06-08

... FEDERAL RESERVE SYSTEM Consumer Advisory Council; Notice of Meeting of the Consumer Advisory Council The Consumer Advisory Council will meet on Thursday, June 17, 2010. The meeting, which will be...'s responsibilities under various consumer financial services laws and on other matters on which the...

Navigation d'un vehicule autonome autour d'un asteroide

NASA Astrophysics Data System (ADS)

Dionne, Karine

Les missions d'exploration planetaire utilisent des vehicules spatiaux pour acquerir les donnees scientifiques qui font avancer notre connaissance du systeme solaire. Depuis les annees 90, ces missions ciblent non seulement les planetes, mais aussi les corps celestes de plus petite taille comme les asteroides. Ces astres representent un defi particulier du point de vue des systemes de navigation, car leur environnement dynamique est complexe. Une sonde spatiale doit reagir rapidement face aux perturbations gravitationnelles en presence, sans quoi sa securite pourrait etre compromise. Les delais de communication avec la Terre pouvant souvent atteindre plusieurs dizaines de minutes, il est necessaire de developper des logiciels permettant une plus grande autonomie d'operation pour ce type de mission. Ce memoire presente un systeme de navigation autonome qui determine la position et la vitesse d'un satellite en orbite autour d'un asteroide. Il s'agit d'un filtre de Kalman etendu adaptatif a trois degres de liberte. Le systeme propose se base sur l'imagerie optique pour detecter des " points de reperes " qui ont ete prealablement cartographies. Il peut s'agir de crateres, de rochers ou de n'importe quel trait physique discernable a la camera. Les travaux de recherche realises se concentrent sur les techniques d'estimation d'etat propres a la navigation autonome. Ainsi, on suppose l'existence d'un logiciel approprie qui realise les fonctions de traitement d'image. La principale contribution de recherche consiste en l'inclusion, a chaque cycle d'estimation, d'une mesure de distance afin d'ameliorer les performances de navigation. Un estimateur d'etat de type adaptatif est necessaire pour le traitement de ces mesures, car leur precision varie dans le temps en raison de l'erreur de pointage. Les contributions secondaires de recherche sont liees a l'analyse de l'observabilite du systeme ainsi qu'a une analyse de sensibilite pour six parametres principaux de conception. Les

Space shuttle navigation analysis. Volume 2: Baseline system navigation

NASA Technical Reports Server (NTRS)

Jones, H. L.; Luders, G.; Matchett, G. A.; Rains, R. G.

1980-01-01

Studies related to the baseline navigation system for the orbiter are presented. The baseline navigation system studies include a covariance analysis of the Inertial Measurement Unit calibration and alignment procedures, postflight IMU error recovery for the approach and landing phases, on-orbit calibration of IMU instrument biases, and a covariance analysis of entry and prelaunch navigation system performance.

Modified Navigation Instructions for Spatial Navigation Assistance Systems Lead to Incidental Spatial Learning

PubMed Central

Gramann, Klaus; Hoepner, Paul; Karrer-Gauss, Katja

2017-01-01

Spatial cognitive skills deteriorate with the increasing use of automated GPS navigation and a general decrease in the ability to orient in space might have further impact on independence, autonomy, and quality of life. In the present study we investigate whether modified navigation instructions support incidental spatial knowledge acquisition. A virtual driving environment was used to examine the impact of modified navigation instructions on spatial learning while using a GPS navigation assistance system. Participants navigated through a simulated urban and suburban environment, using navigation support to reach their destination. Driving performance as well as spatial learning was thereby assessed. Three navigation instruction conditions were tested: (i) a control group that was provided with classical navigation instructions at decision points, and two other groups that received navigation instructions at decision points including either (ii) additional irrelevant information about landmarks or (iii) additional personally relevant information (i.e., individual preferences regarding food, hobbies, etc.), associated with landmarks. Driving performance revealed no differences between navigation instructions. Significant improvements were observed in both modified navigation instruction conditions on three different measures of spatial learning and memory: subsequent navigation of the initial route without navigation assistance, landmark recognition, and sketch map drawing. Future navigation assistance systems could incorporate modified instructions to promote incidental spatial learning and to foster more general spatial cognitive abilities. Such systems might extend mobility across the lifespan. PMID:28243219

16 CFR 1018.26 - Advisory functions.

Code of Federal Regulations, 2010 CFR

2010-01-01

... 16 Commercial Practices 2 2010-01-01 2010-01-01 false Advisory functions. 1018.26 Section 1018.26 Commercial Practices CONSUMER PRODUCT SAFETY COMMISSION GENERAL ADVISORY COMMITTEE MANAGEMENT Operation of Advisory Committees § 1018.26 Advisory functions. (a) Unless otherwise specifically provided by statute...

Aeronautic Instruments. Section VI : Aerial Navigation and Navigating Instruments

NASA Technical Reports Server (NTRS)

Eaton, H N

1923-01-01

This report outlines briefly the methods of aerial navigation which have been developed during the past few years, with a description of the different instruments used. Dead reckoning, the most universal method of aerial navigation, is first discussed. Then follows an outline of the principles of navigation by astronomical observation; a discussion of the practical use of natural horizons, such as sea, land, and cloud, in making extant observations; the use of artificial horizons, including the bubble, pendulum, and gyroscopic types. A description is given of the recent development of the radio direction finder and its application to navigation.

Vehicle-to-infrastructure rail crossing violation warning : concept of operations.

DOT National Transportation Integrated Search

2016-03-31

This Concept of Operations (ConOps) document describes the operational characteristics of a Vehicle-to-Infrastructure (V2I) Rail Crossing Violation Warning (RCVW) safety application. The development of this document was completed with an advisory tea...

76 FR 29752 - The President's Management Advisory Board (PMAB); Notification of Upcoming Public Advisory Meeting

Federal Register 2010, 2011, 2012, 2013, 2014

2011-05-23

...The President's Management Advisory Board, a Federal Advisory Committee established in accordance with the Federal Advisory Committee Act (FACA), 5 U.S.C., App., and Executive Order 13538, will hold a public meeting on June 17, 2011.

75 FR 27557 - Federal Advisory Committee Act

Federal Register 2010, 2011, 2012, 2013, 2014

2010-05-17

... the charter for the Advisory Committee for the 2012 Radiocommunication Conference (WRC-12 Advisory Committee), for a two-year period. The WRC-12 Advisory Committee is a Federal advisory committee under the... CONTACT: Alexander Roytblat, Designated Federal Official, WRC-12 Advisory Committee, FCC International...

Patient navigation across the spectrum of women's health care in the United States.

PubMed

McKenney, Kathryn M; Martinez, Noelle G; Yee, Lynn M

2018-03-01

Patient navigation is a patient-centered intervention that uses trained personnel to identify patient-level barriers, including financial, cultural, logistical, and educational obstacles to health care and then mitigate these barriers to facilitate complete and timely access to health services. For example, to assist a woman with Medicaid who is seeking postpartum care, a patient navigator could help her schedule an appointment before her insurance benefits change, coordinate transportation and child care, give her informational pamphlets on contraception options, and accompany her to the appointment to ensure her questions are answered. Existing studies examining the efficacy of patient navigation interventions show particularly striking benefits in the realm of cancer care, including gynecological oncology; patient navigation has been demonstrated to increase access to screening, shorten time to diagnostic resolution, and improve cancer outcomes, particularly in health disparity populations, such as women of color, rural populations, and poor women. Because of the successes in cancer care at reducing disparities in health care access and health outcomes, patient navigation has the potential to improve care and reduce disparities in obstetric and benign gynecological care. We review the concept of patient navigation, offer potential roles for patient navigation in obstetrics and gynecology, and discuss areas for further investigation. Copyright © 2017 Elsevier Inc. All rights reserved.

77 FR 69869 - National Advisory Council on Alcohol Abuse and Alcoholism, National Advisory Council on Drug...

Federal Register 2010, 2011, 2012, 2013, 2014

2012-11-21

... DEPARTMENT OF HEALTH AND HUMAN SERVICES National Institutes of Health National Advisory Council on Alcohol Abuse and Alcoholism, National Advisory Council on Drug Abuse, and National Cancer Advisory Board; Notice of Joint Meeting Pursuant to section 10(a) of the Federal Advisory Committee Act, as amended (5 U.S.C. App.), notice is hereby given o...

75 FR 43493 - Office of the Secretary; Federal Advisory Committee; Defense Intelligence Agency Advisory Board...

Federal Register 2010, 2011, 2012, 2013, 2014

2010-07-26

... DEPARTMENT OF DEFENSE Office of the Secretary; Federal Advisory Committee; Defense Intelligence Agency Advisory Board; Closed Meeting AGENCY: Defense Intelligence Agency, DOD. ACTION: Meeting notice... Department of Defense announces that Defense Intelligence Agency Advisory Board will meet on September 1 and...

Computer-Assisted Hip and Knee Arthroplasty. Navigation and Active Robotic Systems

PubMed Central

2004-01-01

Executive Summary Objective The Medical Advisory Secretariat undertook a review of the evidence on the effectiveness and cost-effectiveness of computer assisted hip and knee arthroplasty. The two computer assisted arthroplasty systems that are the topics of this review are (1) navigation and (2) robotic-assisted hip and knee arthroplasty. The Technology Computer-assisted arthroplasty consists of navigation and robotic systems. Surgical navigation is a visualization system that provides positional information about surgical tools or implants relative to a target bone on a computer display. Most of the navigation-assisted arthroplasty devices that are the subject of this review are licensed by Health Canada. Robotic systems are active robots that mill bone according to information from a computer-assisted navigation system. The robotic-assisted arthroplasty devices that are the subject of this review are not currently licensed by Health Canada. Review Strategy The Cochrane and International Network of Agencies for Health Technology Assessment databases did not identify any health technology assessments on navigation or robotic-assisted hip or knee arthroplasty. The MEDLINE and EMBASE databases were searched for articles published between January 1, 1996 and November 30, 2003. This search produced 367 studies, of which 9 met the inclusion criteria. Summary of Findings Navigation-Assisted Arthroplasty Five studies were identified that examined navigation-assisted arthroplasty. A Level 1 evidence study from Germany found a statistically significant difference in alignment and angular deviation between navigation-assisted and free-hand total knee arthroplasty in favour of navigation-assisted surgery. However, the endpoints in this study were short-term. To date, the long-term effects (need for revision, implant longevity, pain, functional performance) are unknown.(1) A Level 2 evidence short-term study found that navigation-assisted total knee arthroplasty was

Self-motivated visual scanning predicts flexible navigation in a virtual environment.

PubMed

Ploran, Elisabeth J; Bevitt, Jacob; Oshiro, Jaris; Parasuraman, Raja; Thompson, James C

2014-01-01

The ability to navigate flexibly (e.g., reorienting oneself based on distal landmarks to reach a learned target from a new position) may rely on visual scanning during both initial experiences with the environment and subsequent test trials. Reliance on visual scanning during navigation harkens back to the concept of vicarious trial and error, a description of the side-to-side head movements made by rats as they explore previously traversed sections of a maze in an attempt to find a reward. In the current study, we examined if visual scanning predicted the extent to which participants would navigate to a learned location in a virtual environment defined by its position relative to distal landmarks. Our results demonstrated a significant positive relationship between the amount of visual scanning and participant accuracy in identifying the trained target location from a new starting position as long as the landmarks within the environment remain consistent with the period of original learning. Our findings indicate that active visual scanning of the environment is a deliberative attentional strategy that supports the formation of spatial representations for flexible navigation.

INL Autonomous Navigation System

DOE Office of Scientific and Technical Information (OSTI.GOV)

2005-03-30

The INL Autonomous Navigation System provides instructions for autonomously navigating a robot. The system permits high-speed autonomous navigation including obstacle avoidance, waypoing navigation and path planning in both indoor and outdoor environments.

Biomimetic MEMS sensor array for navigation and water detection

NASA Astrophysics Data System (ADS)

Futterknecht, Oliver; Macqueen, Mark O.; Karman, Salmah; Diah, S. Zaleha M.; Gebeshuber, Ille C.

2013-05-01

The focus of this study is biomimetic concept development for a MEMS sensor array for navigation and water detection. The MEMS sensor array is inspired by abstractions of the respective biological functions: polarized skylight-based navigation sensors in honeybees (Apis mellifera) and the ability of African elephants (Loxodonta africana) to detect water. The focus lies on how to navigate to and how to detect water sources in desert-like or remote areas. The goal is to develop a sensor that can provide both, navigation clues and help in detecting nearby water sources. We basically use the information provided by the natural polarization pattern produced by the sunbeams scattered within the atmosphere combined with the capability of the honeybee's compound eye to extrapolate the navigation information. The detection device uses light beam reactive MEMS, which are capable to detect the skylight polarization based on the Rayleigh sky model. For water detection we present various possible approaches to realize the sensor. In the first approach, polarization is used: moisture saturated areas near ground have a small but distinctively different effect on scattering and polarizing light than less moist ones. Modified skylight polarization sensors (Karman, Diah and Gebeshuber, 2012) are used to visualize this small change in scattering. The second approach is inspired by the ability of elephants to detect infrasound produced by underground water reservoirs, and shall be used to determine the location of underground rivers and visualize their exact routes.

75 FR 18824 - Federal Advisory Committee; Meeting of the Department of Defense Historical Advisory Committee

Federal Register 2010, 2011, 2012, 2013, 2014

2010-04-13

... DEPARTMENT OF DEFENSE Office of the Secretary Federal Advisory Committee; Meeting of the Department of Defense Historical Advisory Committee AGENCY: Department of Defense (DoD). ACTION: Notice of... notice announces a meeting of the Department of Defense Historical Advisory Committee. During the meeting...

78 FR 21349 - Defense Advisory Committee on Military Personnel Testing; Notice of Federal Advisory Committee...

Federal Register 2010, 2011, 2012, 2013, 2014

2013-04-10

... DEPARTMENT OF DEFENSE Office of the Secretary Defense Advisory Committee on Military Personnel... advisory committee meeting of the Defense Advisory Committee on Military Personnel Testing will take place... meeting is to review planned changes and progress in developing computerized tests for military enlistment...

33 CFR 207.185 - Taylors Bayou, Tex., Beaumont Navigation District Lock; use, administration, and navigation.

Code of Federal Regulations, 2011 CFR

2011-07-01

... 33 Navigation and Navigable Waters 3 2011-07-01 2011-07-01 false Taylors Bayou, Tex., Beaumont Navigation District Lock; use, administration, and navigation. 207.185 Section 207.185 Navigation and... § 207.185 Taylors Bayou, Tex., Beaumont Navigation District Lock; use, administration, and navigation...

33 CFR 207.185 - Taylors Bayou, Tex., Beaumont Navigation District Lock; use, administration, and navigation.

Code of Federal Regulations, 2010 CFR

2010-07-01

... 33 Navigation and Navigable Waters 3 2010-07-01 2010-07-01 false Taylors Bayou, Tex., Beaumont Navigation District Lock; use, administration, and navigation. 207.185 Section 207.185 Navigation and... § 207.185 Taylors Bayou, Tex., Beaumont Navigation District Lock; use, administration, and navigation...

Autonomous integrated GPS/INS navigation experiment for OMV. Phase 1: Feasibility study

NASA Technical Reports Server (NTRS)

Upadhyay, Triveni N.; Priovolos, George J.; Rhodehamel, Harley

1990-01-01

The phase 1 research focused on the experiment definition. A tightly integrated Global Positioning System/Inertial Navigation System (GPS/INS) navigation filter design was analyzed and was shown, via detailed computer simulation, to provide precise position, velocity, and attitude (alignment) data to support navigation and attitude control requirements of future NASA missions. The application of the integrated filter was also shown to provide the opportunity to calibrate inertial instrument errors which is particularly useful in reducing INS error growth during times of GPS outages. While the Orbital Maneuvering Vehicle (OMV) provides a good target platform for demonstration and for possible flight implementation to provide improved capability, a successful proof-of-concept ground demonstration can be obtained using any simulated mission scenario data, such as Space Transfer Vehicle, Shuttle-C, Space Station.

Navigable networks as Nash equilibria of navigation games.

PubMed

Gulyás, András; Bíró, József J; Kőrösi, Attila; Rétvári, Gábor; Krioukov, Dmitri

2015-07-03

Common sense suggests that networks are not random mazes of purposeless connections, but that these connections are organized so that networks can perform their functions well. One function common to many networks is targeted transport or navigation. Here, using game theory, we show that minimalistic networks designed to maximize the navigation efficiency at minimal cost share basic structural properties with real networks. These idealistic networks are Nash equilibria of a network construction game whose purpose is to find an optimal trade-off between the network cost and navigability. We show that these skeletons are present in the Internet, metabolic, English word, US airport, Hungarian road networks, and in a structural network of the human brain. The knowledge of these skeletons allows one to identify the minimal number of edges, by altering which one can efficiently improve or paralyse navigation in the network.

Autonomous Navigation Above the GNSS Constellations and Beyond: GPS Navigation for the Magnetospheric Multiscale Mission and SEXTANT Pulsar Navigation Demonstration

NASA Technical Reports Server (NTRS)

Winternitz, Luke

2017-01-01

This talk will describe two first-of-their-kind technology demonstrations attached to ongoing NASA science missions, both of which aim to extend the range of autonomous spacecraft navigation far from the Earth. First, we will describe the onboard GPS navigation system for the Magnetospheric Multiscale (MMS) mission which is currently operating in elliptic orbits reaching nearly halfway to the Moon. The MMS navigation system is a key outgrowth of a larger effort at NASA Goddard Space Flight Center to advance high-altitude Global Navigation Satellite System (GNSS) navigation on multiple fronts, including developing Global Positioning System receivers and onboard navigation software, running simulation studies, and leading efforts to characterize and protect signals at high-altitude in the so-called GNSS Space-Service Volume (SSV). In the second part of the talk, we will describe the Station Explorer for X-ray Timing and Navigation Technology (SEXTANT) mission that aims to make the first in-space demonstration of X-ray pulsar navigation (XNAV). SEXTANT is attached to the NASA astrophysics mission Neutron-star Interior Composition ExploreR (NICER) whose International Space Station mounted X-ray telescope is investigating the fundamental physics of extremes in gravity, material density, and electromagnetic fields found in neutron stars, and whose instrument provides a nearly ideal navigation sensor for XNAV.

78 FR 68861 - Certain Navigation Products, Including GPS Devices, Navigation and Display Systems, Radar Systems...

Federal Register 2010, 2011, 2012, 2013, 2014

2013-11-15

... Devices, Navigation and Display Systems, Radar Systems, Navigational Aids, Mapping Systems and Related... navigation products, including GPS devices, navigation and display systems, radar systems, navigational aids..., radar systems, navigational aids, mapping systems and related software by reason of infringement of one...

Citizens Advisory Committees.

ERIC Educational Resources Information Center

Stemnock, Suzanne K.

1968-01-01

This document contains the results of a national survey designed to determine the composition and location of permanent citizens advisory committees operating within the nation's school districts. The 52 district-wide, continuing citizens advisory bodies identified by 290 responding school systems are listed alphabetically by State. The following…

Advisory: Definitions, Descriptions, Decisions, Directions.

ERIC Educational Resources Information Center

Galassi, John P.; Gulledge, Suzanne A.; Cox, Nancy D.

Advisory groups have played an essential role in improving the school climate and conditions for young adolescents in schools. How middle school decision makers go about the process of designing or re-designing an advisory program needs to be considered. A discussion is presented of the background information that helps define advisories. It…

GPS Auto-Navigation Design for Unmanned Air Vehicles

NASA Technical Reports Server (NTRS)

Nilsson, Caroline C. A.; Heinzen, Stearns N.; Hall, Charles E., Jr.; Chokani, Ndaona

2003-01-01

A GPS auto-navigation system is designed for Unmanned Air Vehicles. The objective is to enable the air vehicle to be used as a test-bed for novel flow control concepts. The navigation system uses pre-programmed GPS waypoints. The actual GPS position, heading, and velocity are collected by the flight computer, a PC104 system running in Real-Time Linux, and compared with the desired waypoint. The navigator then determines the necessity of a heading correction and outputs the correction in the form of a commanded bank angle, for a level coordinated turn, to the controller system. This controller system consists of 5 controller! (pitch rate PID, yaw damper, bank angle PID, velocity hold, and altitude hold) designed for a closed loop non-linear aircraft model with linear aerodynamic coefficients. The ability and accuracy of using GPS data, is validated by a GPS flight. The autopilots are also validated in flight. The autopilot unit flight validations show that the designed autopilots function as designed. The aircraft model, generated on Matlab SIMULINK is also enhanced by the flight data to accurately represent the actual aircraft.

Evolving earth-based and in-situ satellite network architectures for Mars communications and navigation support

NASA Astrophysics Data System (ADS)

Hastrup, Rolf; Weinberg, Aaron; McOmber, Robert

1991-09-01

Results of on-going studies to develop navigation/telecommunications network concepts to support future robotic and human missions to Mars are presented. The performance and connectivity improvements provided by the relay network will permit use of simpler, lower performance, and less costly telecom subsystems for the in-situ mission exploration elements. Orbiting relay satellites can serve as effective navigation aids by supporting earth-based tracking as well as providing Mars-centered radiometric data for mission elements approaching, in orbit, or on the surface of Mars. The relay satellite orbits may be selected to optimize navigation aid support and communication coverage for specific mission sets.

Evolving earth-based and in-situ satellite network architectures for Mars communications and navigation support

NASA Technical Reports Server (NTRS)

Hastrup, Rolf; Weinberg, Aaron; Mcomber, Robert

1991-01-01

Results of on-going studies to develop navigation/telecommunications network concepts to support future robotic and human missions to Mars are presented. The performance and connectivity improvements provided by the relay network will permit use of simpler, lower performance, and less costly telecom subsystems for the in-situ mission exploration elements. Orbiting relay satellites can serve as effective navigation aids by supporting earth-based tracking as well as providing Mars-centered radiometric data for mission elements approaching, in orbit, or on the surface of Mars. The relay satellite orbits may be selected to optimize navigation aid support and communication coverage for specific mission sets.

ATON (Autonomous Terrain-based Optical Navigation) for exploration missions: recent flight test results

NASA Astrophysics Data System (ADS)

Theil, S.; Ammann, N.; Andert, F.; Franz, T.; Krüger, H.; Lehner, H.; Lingenauber, M.; Lüdtke, D.; Maass, B.; Paproth, C.; Wohlfeil, J.

2018-03-01

Since 2010 the German Aerospace Center is working on the project Autonomous Terrain-based Optical Navigation (ATON). Its objective is the development of technologies which allow autonomous navigation of spacecraft in orbit around and during landing on celestial bodies like the Moon, planets, asteroids and comets. The project developed different image processing techniques and optical navigation methods as well as sensor data fusion. The setup—which is applicable to many exploration missions—consists of an inertial measurement unit, a laser altimeter, a star tracker and one or multiple navigation cameras. In the past years, several milestones have been achieved. It started with the setup of a simulation environment including the detailed simulation of camera images. This was continued by hardware-in-the-loop tests in the Testbed for Robotic Optical Navigation (TRON) where images were generated by real cameras in a simulated downscaled lunar landing scene. Data were recorded in helicopter flight tests and post-processed in real-time to increase maturity of the algorithms and to optimize the software. Recently, two more milestones have been achieved. In late 2016, the whole navigation system setup was flying on an unmanned helicopter while processing all sensor information onboard in real time. For the latest milestone the navigation system was tested in closed-loop on the unmanned helicopter. For that purpose the ATON navigation system provided the navigation state for the guidance and control of the unmanned helicopter replacing the GPS-based standard navigation system. The paper will give an introduction to the ATON project and its concept. The methods and algorithms of ATON are briefly described. The flight test results of the latest two milestones are presented and discussed.

A time-based concept for terminal-area traffic management

NASA Technical Reports Server (NTRS)

Erzberger, Heinz; Tobias, Leonard

1986-01-01

An automated air-traffic-management concept that has the potential for significantly increasing the efficiency of traffic flows in high-density terminal areas is discussed. The concept's implementation depends on techniques for controlling the landing time of all aircraft entering the terminal area, both those that are equipped with on-board four-dimensional (4D) guidance systems as well as those aircraft types that are conventionally equipped. The two major ground-based elements of the system are a scheduler which assigns conflict-free landing times and a profile descent advisor. Landing time provided by the scheduler is uplinked to equipped aircraft and translated into the appropriate 4D trajectory by the-board flight-management system. The controller issues descent advisories to unequipped aircraft to help them achieve the assigned landing times. Air traffic control simulations have established that the concept provides an efficient method for controlling various mixes of 4D-equipped and unequipped, as well as low- and high-performance, aircraft. Piloted simulations of profiles flown with the aid of advisories have verified the ability to meet specified descent times with prescribed accuracy.

Navigable networks as Nash equilibria of navigation games

PubMed Central

Gulyás, András; Bíró, József J.; Kőrösi, Attila; Rétvári, Gábor; Krioukov, Dmitri

2015-01-01

Common sense suggests that networks are not random mazes of purposeless connections, but that these connections are organized so that networks can perform their functions well. One function common to many networks is targeted transport or navigation. Here, using game theory, we show that minimalistic networks designed to maximize the navigation efficiency at minimal cost share basic structural properties with real networks. These idealistic networks are Nash equilibria of a network construction game whose purpose is to find an optimal trade-off between the network cost and navigability. We show that these skeletons are present in the Internet, metabolic, English word, US airport, Hungarian road networks, and in a structural network of the human brain. The knowledge of these skeletons allows one to identify the minimal number of edges, by altering which one can efficiently improve or paralyse navigation in the network. PMID:26138277

75 FR 2880 - Homeland Security Advisory Council

Federal Register 2010, 2011, 2012, 2013, 2014

2010-01-19

... DEPARTMENT OF HOMELAND SECURITY [Docket No. DHS-2009-0160] Homeland Security Advisory Council... advisory committee meeting. SUMMARY: The Homeland Security Advisory Council (HSAC) will meet on February 3.... Mail: Homeland Security Advisory Council, 1100 Hampton Park Boulevard, Mailstop 0850, Capitol Heights...

Single-Frequency GPS Relative Navigation in a High Ionosphere Orbital Environment

NASA Technical Reports Server (NTRS)

Conrad, Patrick R.; Naasz, Bo J.

2007-01-01

The Global Positioning System (GPS) provides a convenient source for space vehicle relative navigation measurements, especially for low Earth orbit formation flying and autonomous rendezvous mission concepts. For single-frequency GPS receivers, ionospheric path delay can be a significant error source if not properly mitigated. In particular, ionospheric effects are known to cause significant radial position error bias and add dramatically to relative state estimation error if the onboard navigation software does not force the use of measurements from common or shared GPS space vehicles. Results from GPS navigation simulations are presented for a pair of space vehicles flying in formation and using GPS pseudorange measurements to perform absolute and relative orbit determination. With careful measurement selection techniques relative state estimation accuracy to less than 20 cm with standard GPS pseudorange processing and less than 10 cm with single-differenced pseudorange processing is shown.

77 FR 64335 - Notification of a Public Teleconference of the Science Advisory Board; Perchlorate Advisory Panel

Federal Register 2010, 2011, 2012, 2013, 2014

2012-10-19

... Science Advisory Board; Perchlorate Advisory Panel AGENCY: Environmental Protection Agency (EPA). ACTION... announces two public teleconferences of the SAB Perchlorate Advisory Panel to discuss its revised draft... Epidemiological Evidence to Develop a Maximum Contaminant Level Goal (MCLG) for Perchlorate. DATES: The public...

77 FR 25706 - Notice of Advisory Committee Closed Meeting; U.S. Strategic Command Strategic Advisory Group

Federal Register 2010, 2011, 2012, 2013, 2014

2012-05-01

..., Command and Control, Science and Technology, Missile Defense. Meeting Accessibility: Pursuant to 5 U.S.C... DEPARTMENT OF DEFENSE Notice of Advisory Committee Closed Meeting; U.S. Strategic Command Strategic Advisory Group AGENCY: Department of Defense. ACTION: Notice of Advisory Committee closed meeting...

Electromagnetic navigational bronchoscopy and robotic-assisted thoracic surgery.

PubMed

Christie, Sara

2014-06-01

With the use of electromagnetic navigational bronchoscopy and robotics, lung lesions can be diagnosed and resected during one surgical procedure. Global positioning system technology allows surgeons to identify and mark a thoracic tumor, and then robotics technology allows them to perform minimally invasive resection and cancer staging procedures. Nurses on the perioperative robotics team must consider the logistics of providing safe and competent care when performing combined procedures during one surgical encounter. Instrumentation, OR organization and room setup, and patient positioning are important factors to consider to complete the procedure systematically and efficiently. This revolutionary concept of combining navigational bronchoscopy with robotics requires a team of dedicated nurses to facilitate the sequence of events essential for providing optimal patient outcomes in highly advanced surgical procedures. Copyright © 2014 AORN, Inc. Published by Elsevier Inc. All rights reserved.

16 CFR 1018.12 - Statutory advisory committees.

Code of Federal Regulations, 2010 CFR

2010-01-01

... 16 Commercial Practices 2 2010-01-01 2010-01-01 false Statutory advisory committees. 1018.12 Section 1018.12 Commercial Practices CONSUMER PRODUCT SAFETY COMMISSION GENERAL ADVISORY COMMITTEE MANAGEMENT Establishment of Advisory Committees § 1018.12 Statutory advisory committees. The Commission has...

Public Library Advisory Board Handbook.

ERIC Educational Resources Information Center

Bailey, Alvin R., Ed.; And Others

In Texas, public library advisory boards are a recent innovation that have developed as a result of the Council-Manager form of government. This handbook is a response to that development as a compilation of information on the most efficient roles and functions of advisory boards. An advisory board is appointed by the governing body of which the…

Patient Navigation from the Paired Perspectives of Cancer Patients and Navigators: A Qualitative Analysis

PubMed Central

Yosha, Amanat M.; Carroll, Jennifer K.; Hendren, Samantha; Salamone, Charcy M.; Sanders, Mechelle; Fiscella, Kevin; Epstein, Ronald M.

2011-01-01

Objective Patient navigation for cancer care assesses and alleviates barriers to health care services. We examined paired perspectives of cancer patients and their navigators to examine the process of patient navigation. We explored the strengths, limitations, and our own lessons learned about adopting the novel methodology of multiperspective analysis. Methods As part of a larger RCT, patients and navigators were interviewed separately. We reviewed interviews with 18 patient-navigator dyads. Dyad summaries were created that explicitly incorporated both patient and navigator perspectives. Emerging themes and verbatim quotations were reflected in the summaries. Results Paired perspectives were valuable in identifying struggles that arose during navigation. These were represented as imbalanced investment and relational amelioration. Patients and navigators had general consensus about important patient needs for cancer care, but characterized these needs differently. Conclusion Our experience with multiperspective analysis revealed a methodology that delivers novel relational findings, but is best conducted de novo rather than as part of a larger study. Practice Implications Multiperspective analysis should be more widely adopted with clear aims and analytic strategy that strengthen the ability to reveal relational dynamics. Navigation training programs should anticipate navigator struggles and provide navigators with tools to manage them. PMID:21255958

Crew aiding and automation: A system concept for terminal area operations, and guidelines for automation design

NASA Technical Reports Server (NTRS)

Dwyer, John P.

1994-01-01

This research and development program comprised two efforts: the development of guidelines for the design of automated systems, with particular emphasis on automation design that takes advantage of contextual information, and the concept-level design of a crew aiding system, the Terminal Area Navigation Decision Aiding Mediator (TANDAM). This concept outlines a system capable of organizing navigation and communication information and assisting the crew in executing the operations required in descent and approach. In service of this endeavor, problem definition activities were conducted that identified terminal area navigation and operational familiarization exercises addressing the terminal area navigation problem. Both airborne and ground-based (ATC) elements of aircraft control were extensively researched. The TANDAM system concept was then specified, and the crew interface and associated systems described. Additionally, three descent and approach scenarios were devised in order to illustrate the principal functions of the TANDAM system concept in relation to the crew, the aircraft, and ATC. A plan for the evaluation of the TANDAM system was established. The guidelines were developed based on reviews of relevant literature, and on experience gained in the design effort.

75 FR 33616 - Science Advisory Board Staff Office; Notification of Closed Meetings of the Science Advisory...

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2010-06-14

... Closed Meetings of the Science Advisory Board's Scientific and Technological Achievement Awards Committee... Agency's (EPA), Science Advisory Board (SAB) Staff Office announces a meeting and teleconference of the....gov . The SAB Mailing address is: U.S. EPA Science Advisory Board (1400F), U.S. Environmental...

75 FR 4069 - Science Advisory Board Staff Office; Notification of a Clean Air Scientific Advisory Committee...

Federal Register 2010, 2011, 2012, 2013, 2014

2010-01-26

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75 FR 10479 - Science Advisory Board Staff Office; Notification of a Clean Air Scientific Advisory Committee...

Federal Register 2010, 2011, 2012, 2013, 2014

2010-03-08

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78 FR 50040 - Technology Advisory Committee

Federal Register 2010, 2011, 2012, 2013, 2014

2013-08-16

... COMMODITY FUTURES TRADING COMMISSION Technology Advisory Committee AGENCY: Commodity Futures Trading Commission. ACTION: Notice of Meeting of Technology Advisory Committee. SUMMARY: The Commodity Futures Trading Commission (CFTC) announces that on September 12, 2013, the CFTC's Technology Advisory...

A Comprehensive Electronic Health Record Based Patient Navigation Module Including Technology Driven Colorectal Cancer Outreach and Education.

PubMed

Ajeesh, Sunny; Luis, Rustveld

2018-06-01

The purpose of this concept paper is to propose an innovative multifaceted patient navigation module embedded in the Electronic Health Record (EHR) to address barriers to efficient and effective colorectal cancer (CRC) care. The EHR-based CRC patient navigation module will include several patient navigation features: (1) CRC screening registry; (2) patient navigation data, including CRC screening data, outcomes of patient navigation including navigation status (CRC screening referrals, fecal occult blood test (FOBT) completed, colonoscopy scheduled and completed, cancelations, reschedules, and no-shows); (3) CRC counseling aid; and 4) Web-based CRC education application including interactive features such as a standardized colonoscopy preparation guide, modifiable CRC risk factors, and links to existing resources. An essential component of health informatics is the use of EHR systems to not only provide a system for storing and retrieval of patient health data but can also be used to enhance patient decision-making both from a provider and patient perspective.

76 FR 44912 - Science Advisory Board Staff Office; Notification of Closed Meetings of the Science Advisory...

Federal Register 2010, 2011, 2012, 2013, 2014

2011-07-27

... Closed Meetings of the Science Advisory Board's Scientific and Technological Achievement Awards Committee... Agency's (EPA), Science Advisory Board (SAB) Staff Office announces a meeting and teleconference of the[email protected] . The SAB Mailing address is: U.S. EPA Science Advisory Board (1400R), U.S. Environmental...

Lunar Navigation with Libration Point Orbiters and GPS

NASA Technical Reports Server (NTRS)

Carpenter, J. Russell

2004-01-01

NASA is currently studying a Vision for Space Exploration based on spiral development of robotic and piloted missions to the moon and Mars, but research into how to perform such missions has continued ever since the first era of lunar exploration. One area of study that a number of researchers have pursued is libration point navigation and communication relay concepts. These concepts would appear to support many of NASA's current requirements for navigation and communications coverage for human and robotic spacecraft operating in lunar space and beyond. In trading libration point concepts against other options, designers must consider issues such as the number of spacecraft, required to provide coverage, insertion and stationkeeping costs, power and data rate requirements, frequency allocations, and many others. The libration points, along with a typical cis-lunar trajectory, are equilibrium locations for an infinitesimal mass in the rotating coordinate system that follows the motion of two massive bodies in circular orbits with respect to their common barycenter. There are three co-linear points along the line connecting the massive bodies: between the bodies, beyond the secondary body, and beyond the primary body. The relative distances of these points along the line connecting the bodies depend on the mass ratios. There are also two points that form equilateral triangles with the massive bodies. Ideally, motion in the neighborhood of the co-linear points is unstable, while motion near the equilibrium points is stable. However, in the real world, the motions are highly perturbed so that a satellite will require stationkeeping maneuvers.

78 FR 28207 - Electricity Advisory Committee

Federal Register 2010, 2011, 2012, 2013, 2014

2013-05-14

... DEPARTMENT OF ENERGY Electricity Advisory Committee AGENCY: Office of Electricity Delivery and... a meeting of the Electricity Advisory Committee (EAC). The Federal Advisory Committee Act (Pub. L..., Arlington, Virginia 22203. FOR FURTHER INFORMATION CONTACT: Matthew Rosenbaum, Office of Electricity...

77 FR 15737 - Technology Advisory Committee

Federal Register 2010, 2011, 2012, 2013, 2014

2012-03-16

... COMMODITY FUTURES TRADING COMMISSION Technology Advisory Committee AGENCY: Commodity Futures Trading Commission (``CFTC''). ACTION: Notice of meeting of Technology Advisory Committee. SUMMARY: The CFTC announces that on March 29, 2012, the CFTC's Technology Advisory Committee (``TAC'') will hold a...

77 FR 29995 - Electricity Advisory Committee

Federal Register 2010, 2011, 2012, 2013, 2014

2012-05-21

... DEPARTMENT OF ENERGY Electricity Advisory Committee AGENCY: Office of Electricity Delivery and... a meeting of the Electricity Advisory Committee (EAC). The Federal Advisory Committee Act (Pub. L... INFORMATION CONTACT: Matthew Rosenbaum, Office of Electricity Delivery and Energy Reliability, U.S. Department...

77 FR 58534 - Electricity Advisory Committee

Federal Register 2010, 2011, 2012, 2013, 2014

2012-09-21

... DEPARTMENT OF ENERGY Electricity Advisory Committee AGENCY: Office of Electricity Delivery and... a meeting of the Electricity Advisory Committee (EAC). The Federal Advisory Committee Act (Pub. L... FURTHER INFORMATION CONTACT: Matthew Rosenbaum, Office of Electricity Delivery and Energy Reliability, U.S...

76 FR 59667 - Electricity Advisory Committee

Federal Register 2010, 2011, 2012, 2013, 2014

2011-09-27

... DEPARTMENT OF ENERGY Electricity Advisory Committee AGENCY: Office of Electricity Delivery and... a meeting of the Electricity Advisory Committee (EAC). The Federal Advisory Committee Act (Pub. L..., Virginia 22203. FOR FURTHER INFORMATION CONTACT: David Meyer, Office of Electricity Delivery and Energy...

75 FR 61454 - Electricity Advisory Committee

Federal Register 2010, 2011, 2012, 2013, 2014

2010-10-05

... DEPARTMENT OF ENERGY Electricity Advisory Committee AGENCY: Department of Energy, Office of Electricity Delivery and Energy Reliability. ACTION: Notice of open meeting. SUMMARY: This notice announces the open meeting of the re-established DOE Electricity Advisory Committee. The Federal Advisory...

76 FR 57023 - Science Advisory Board

Federal Register 2010, 2011, 2012, 2013, 2014

2011-09-15

... DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration (NOAA) Science Advisory... forth the schedule and proposed agenda of a forthcoming meeting of the NOAA Science Advisory Board. The... date. SUPPLEMENTARY INFORMATION: The Science Advisory Board (SAB) was established by a Decision...

75 FR 54854 - Science Advisory Board

Federal Register 2010, 2011, 2012, 2013, 2014

2010-09-09

... DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration Science Advisory Board... the schedule and proposed agenda of a forthcoming meeting of the NOAA Science Advisory Board. The... FURTHER INFORMATION CONTACT: Dr. Cynthia Decker, Executive Director, Science Advisory Board, NOAA, Rm...

Unified Simulation and Analysis Framework for Deep Space Navigation Design

NASA Technical Reports Server (NTRS)

Anzalone, Evan; Chuang, Jason; Olsen, Carrie

2013-01-01

As the technology that enables advanced deep space autonomous navigation continues to develop and the requirements for such capability continues to grow, there is a clear need for a modular expandable simulation framework. This tool's purpose is to address multiple measurement and information sources in order to capture system capability. This is needed to analyze the capability of competing navigation systems as well as to develop system requirements, in order to determine its effect on the sizing of the integrated vehicle. The development for such a framework is built upon Model-Based Systems Engineering techniques to capture the architecture of the navigation system and possible state measurements and observations to feed into the simulation implementation structure. These models also allow a common environment for the capture of an increasingly complex operational architecture, involving multiple spacecraft, ground stations, and communication networks. In order to address these architectural developments, a framework of agent-based modules is implemented to capture the independent operations of individual spacecraft as well as the network interactions amongst spacecraft. This paper describes the development of this framework, and the modeling processes used to capture a deep space navigation system. Additionally, a sample implementation describing a concept of network-based navigation utilizing digitally transmitted data packets is described in detail. This developed package shows the capability of the modeling framework, including its modularity, analysis capabilities, and its unification back to the overall system requirements and definition.

76 FR 64088 - World Trade Center Health Program Scientific/Technical Advisory Committee (WTCHP STAC or Advisory...

Federal Register 2010, 2011, 2012, 2013, 2014

2011-10-17

... DEPARTMENT OF HEALTH AND HUMAN SERVICES Centers for Disease Control and Prevention [Docket Number NIOSH-248] World Trade Center Health Program Scientific/Technical Advisory Committee (WTCHP STAC or Advisory Committee), National Institute for Occupational Safety and Health (NIOSH) In accordance with section 10(a)(2) of the Federal Advisory...

50 CFR 100.12 - Local advisory committees.

Code of Federal Regulations, 2010 CFR

2010-10-01

... 50 Wildlife and Fisheries 6 2010-10-01 2010-10-01 false Local advisory committees. 100.12 Section... Structure § 100.12 Local advisory committees. (a) The Board shall establish such local Federal Advisory... in § 100.11. (b) Local Federal Advisory Committees, if established by the Board, shall operate in...

50 CFR 100.12 - Local advisory committees.

Code of Federal Regulations, 2011 CFR

2011-10-01

... 50 Wildlife and Fisheries 8 2011-10-01 2011-10-01 false Local advisory committees. 100.12 Section... Structure § 100.12 Local advisory committees. (a) The Board shall establish such local Federal Advisory... in § 100.11. (b) Local Federal Advisory Committees, if established by the Board, shall operate in...

The Development of a Simulator System and Hardware Test Bed for Deep Space X-Ray Navigation

NASA Astrophysics Data System (ADS)

Doyle, Patrick T.

2013-03-01

Currently, there is a considerable interest in developing technologies that will allow using photon measurements from celestial x-ray sources for deep space navigation. The impetus for this is that many envisioned future space missions will require spacecraft to have autonomous navigation capabilities. For missions close to Earth, Global Navigation Satellite Systems (GNSS) such as GPS are readily available for use, but for missions far from Earth, other alternatives must be provided. While existing systems such as the Deep Space Network (DSN) can be used, latencies associated with servicing a fleet of vehicles may not be compatible with some autonomous operations requiring timely updates of their navigation solution. Because of their somewhat predictable emissions, pulsars are the ideal candidates for x-ray sources that can be used to provide key parameters for navigation. Algorithms and simulation tools that will enable designing and analyzing x-ray navigation concepts are presented. The development of a compact x-ray detector system is pivotal to the eventual deployment of such navigation systems. Therefore, results of a high altitude balloon test to evaluate the design of a compact x-ray detector system are described as well.

76 FR 37103 - Electricity Advisory Committee

Federal Register 2010, 2011, 2012, 2013, 2014

2011-06-24

... DEPARTMENT OF ENERGY Electricity Advisory Committee AGENCY: Office of Electricity Delivery and... a meeting of the Electricity Advisory Committee (EAC). The Federal Advisory Committee Act (Pub. L...: David Meyer, Office of Electricity Delivery and Energy Reliability, U.S. Department of Energy, Forrestal...

77 FR 476 - Science Advisory Board

Federal Register 2010, 2011, 2012, 2013, 2014

2012-01-05

... DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration (NOAA) Science Advisory... forth the schedule and proposed agenda of a forthcoming meeting of the NOAA Science Advisory Board. The... INFORMATION: The Science Advisory Board (SAB) was established by a Decision Memorandum dated September 25...

77 FR 14017 - World Trade Center Health Program Scientific/Technical Advisory Committee (WTCHP STAC or Advisory...

Federal Register 2010, 2011, 2012, 2013, 2014

2012-03-08

... DEPARTMENT OF HEALTH AND HUMAN SERVICES Centers for Disease Control and Prevention World Trade Center Health Program Scientific/Technical Advisory Committee (WTCHP STAC or Advisory Committee), National Institute for Occupational Safety and Health (NIOSH) In accordance with section 10(a)(2) of the Federal Advisory Committee Act (Pub. L. 92-463),...

77 FR 4820 - World Trade Center Health Program Scientific/Technical Advisory Committee (WTCHP STAC or Advisory...

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2012-01-31

... DEPARTMENT OF HEALTH AND HUMAN SERVICES Centers for Disease Control and Prevention World Trade Center Health Program Scientific/Technical Advisory Committee (WTCHP STAC or Advisory Committee), National Institute for Occupational Safety and Health (NIOSH) In accordance with section 10(a)(2) of the Federal Advisory Committee Act (Pub. L. 92-463),...

76 FR 81947 - World Trade Center Health Program Scientific/Technical Advisory Committee (WTCHP STAC or Advisory...

Federal Register 2010, 2011, 2012, 2013, 2014

2011-12-29

... DEPARTMENT OF HEALTH AND HUMAN SERVICES Centers for Disease Control and Prevention World Trade Center Health Program Scientific/Technical Advisory Committee (WTCHP STAC or Advisory Committee), National Institute for Occupational Safety and Health (NIOSH) In accordance with section 10(a)(2) of the Federal Advisory Committee Act (Pub. L. 92-463)...

75 FR 11883 - Science Advisory Board Staff Office; Notification of a Public Meeting of the Science Advisory...

Federal Register 2010, 2011, 2012, 2013, 2014

2010-03-12

... ENVIRONMENTAL PROTECTION AGENCY [FRL-9126-2] Science Advisory Board Staff Office; Notification of a Public Meeting of the Science Advisory Board (SAB) AGENCY: Environmental Protection Agency (EPA). ACTION: Notice. SUMMARY: The Environmental Protection Agency (EPA) Science Advisory Board (SAB) Staff...

75 FR 6358 - Federal Advisory Committee; Defense Advisory Board for Employer Support of the Guard and Reserve...

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2010-02-09

... DEPARTMENT OF DEFENSE Office of the Secretary Federal Advisory Committee; Defense Advisory Board...; Charter Revision AGENCY: Department of Defense (DoD). ACTION: Federal advisory committee charter. SUMMARY... Committee Reports to include the Under Secretary of Defense (Personnel and Readiness). FOR FURTHER...

77 FR 52335 - Advisory Board on Radiation and Worker Health (ABRWH or Advisory Board), National Institute for...

Federal Register 2010, 2011, 2012, 2013, 2014

2012-08-29

... DEPARTMENT OF HEALTH AND HUMAN SERVICES Centers for Disease Control and Prevention Advisory Board on Radiation and Worker Health (ABRWH or Advisory Board), National Institute for Occupational Safety.... Background: The Advisory Board was established under the Energy Employees Occupational Illness Compensation...

77 FR 9254 - Advisory Board on Radiation and Worker Health (ABRWH or Advisory Board), National Institute for...

Federal Register 2010, 2011, 2012, 2013, 2014

2012-02-16

... DEPARTMENT OF HEALTH AND HUMAN SERVICES Centers for Disease Control and Prevention Advisory Board on Radiation and Worker Health (ABRWH or Advisory Board), National Institute for Occupational Safety.... Background: The Advisory Board was established under the Energy Employees Occupational Illness Compensation...

77 FR 69486 - Advisory Board on Radiation and Worker Health (ABRWH or Advisory Board), National Institute for...

Federal Register 2010, 2011, 2012, 2013, 2014

2012-11-19

... DEPARTMENT OF HEALTH AND HUMAN SERVICES Centers for Disease Control and Prevention Advisory Board on Radiation and Worker Health (ABRWH or Advisory Board), National Institute for Occupational Safety... people. Background: The Advisory Board was established under the Energy Employees Occupational Illness...

76 FR 5814 - Advisory Board on Radiation and Worker Health (ABRWH or Advisory Board), National Institute for...

Federal Register 2010, 2011, 2012, 2013, 2014

2011-02-02

... DEPARTMENT OF HEALTH AND HUMAN SERVICES Centers for Disease Control and Prevention Advisory Board on Radiation and Worker Health (ABRWH or Advisory Board), National Institute for Occupational Safety...: The Advisory Board was established under the Energy Employees Occupational Illness Compensation...

75 FR 66769 - Advisory Board on Radiation and Worker Health (ABRWH or Advisory Board), National Institute for...

Federal Register 2010, 2011, 2012, 2013, 2014

2010-10-29

... DEPARTMENT OF HEALTH AND HUMAN SERVICES Centers for Disease Control and Prevention Advisory Board on Radiation and Worker Health (ABRWH or Advisory Board), National Institute for Occupational Safety...: The Advisory Board was established under the Energy Employees Occupational Illness Compensation...

13 CFR 130.360 - SBDC advisory boards.

Code of Federal Regulations, 2010 CFR

2010-01-01

... the operation of the SBDC network. (2) The advisory board shall be referred to as a State SBDC... 13 Business Credit and Assistance 1 2010-01-01 2010-01-01 false SBDC advisory boards. 130.360... CENTERS § 130.360 SBDC advisory boards. (a) State/Regional Advisory Boards. (1) The Lead Center must...

13 CFR 130.360 - SBDC advisory boards.

Code of Federal Regulations, 2013 CFR

2013-01-01

... the operation of the SBDC network. (2) The advisory board shall be referred to as a State SBDC... 13 Business Credit and Assistance 1 2013-01-01 2013-01-01 false SBDC advisory boards. 130.360... CENTERS § 130.360 SBDC advisory boards. (a) State/Regional Advisory Boards. (1) The Lead Center must...

13 CFR 130.360 - SBDC advisory boards.

Code of Federal Regulations, 2014 CFR

2014-01-01

... the operation of the SBDC network. (2) The advisory board shall be referred to as a State SBDC... 13 Business Credit and Assistance 1 2014-01-01 2014-01-01 false SBDC advisory boards. 130.360... CENTERS § 130.360 SBDC advisory boards. (a) State/Regional Advisory Boards. (1) The Lead Center must...

13 CFR 130.360 - SBDC advisory boards.

Code of Federal Regulations, 2012 CFR

2012-01-01

... the operation of the SBDC network. (2) The advisory board shall be referred to as a State SBDC... 13 Business Credit and Assistance 1 2012-01-01 2012-01-01 false SBDC advisory boards. 130.360... CENTERS § 130.360 SBDC advisory boards. (a) State/Regional Advisory Boards. (1) The Lead Center must...

13 CFR 130.360 - SBDC advisory boards.

Code of Federal Regulations, 2011 CFR

2011-01-01

... the operation of the SBDC network. (2) The advisory board shall be referred to as a State SBDC... 13 Business Credit and Assistance 1 2011-01-01 2011-01-01 false SBDC advisory boards. 130.360... CENTERS § 130.360 SBDC advisory boards. (a) State/Regional Advisory Boards. (1) The Lead Center must...

78 FR 55692 - Electricity Advisory Committee

Federal Register 2010, 2011, 2012, 2013, 2014

2013-09-11

... DEPARTMENT OF ENERGY Electricity Advisory Committee AGENCY: Office of Electricity Delivery and... a meeting of the Electricity Advisory Committee (EAC). The Federal Advisory Committee Act (Pub. L... Electricity Delivery and Energy Reliability, U.S. Department of Energy, Forrestal Building, Room 8G-017, 1000...

5 CFR 724.403 - Advisory guidelines.

Code of Federal Regulations, 2010 CFR

2010-01-01

... 5 Administrative Personnel 2 2010-01-01 2010-01-01 false Advisory guidelines. 724.403 Section 724.403 Administrative Personnel OFFICE OF PERSONNEL MANAGEMENT (CONTINUED) CIVIL SERVICE REGULATIONS... RETALIATION ACT OF 2002 Best Practices § 724.403 Advisory guidelines. OPM will issue advisory guidelines to...

77 FR 58356 - Science Advisory Board

Federal Register 2010, 2011, 2012, 2013, 2014

2012-09-20

... DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration Science Advisory Board... the schedule and proposed agenda of a forthcoming meeting of the NOAA Science Advisory Board. The... Science Advisory Board (SAB) was established by a Decision Memorandum dated September 25, 1997, and is the...

76 FR 8715 - Technology Advisory Committee

Federal Register 2010, 2011, 2012, 2013, 2014

2011-02-15

... COMMODITY FUTURES TRADING COMMISSION Technology Advisory Committee AGENCY: Commodity Futures Trading Commission (``CFTC''). ACTION: Notice of meeting of Technology Advisory Committee. SUMMARY: The Technology Advisory Committee will hold a rescheduled public meeting on March 1, 2011, from 1 p.m. to 5 p.m...

76 FR 75874 - Technology Advisory Committee

Federal Register 2010, 2011, 2012, 2013, 2014

2011-12-05

... COMMODITY FUTURES TRADING COMMISSION Technology Advisory Committee AGENCY: Commodity Futures Trading Commission (``CFTC''). ACTION: Notice of Meeting of Technology Advisory Committee. SUMMARY: The Technology Advisory Committee will hold a public meeting on December 13, 2011, from 10 a.m. to 5 p.m., at the...

76 FR 776 - Technology Advisory Committee

Federal Register 2010, 2011, 2012, 2013, 2014

2011-01-06

... COMMODITY FUTURES TRADING COMMISSION Technology Advisory Committee AGENCY: Commodity Futures Trading Commission (``CFTC''). ACTION: Notice of meeting of Technology Advisory Committee. SUMMARY: The Technology Advisory Committee will hold a public meeting on January 27, 2011, from 1 p.m. to 5 p.m., at the...

Moth-inspired navigation algorithm in a turbulent odor plume from a pulsating source.

PubMed

Liberzon, Alexander; Harrington, Kyra; Daniel, Nimrod; Gurka, Roi; Harari, Ally; Zilman, Gregory

2018-01-01

Some female moths attract male moths by emitting series of pulses of pheromone filaments propagating downwind. The turbulent nature of the wind creates a complex flow environment, and causes the filaments to propagate in the form of patches with varying concentration distributions. Inspired by moth navigation capabilities, we propose a navigation strategy that enables a flier to locate an upwind pulsating odor source in a windy environment using a single threshold-based detection sensor. This optomotor anemotaxis strategy is constructed based on the physical properties of the turbulent flow carrying discrete puffs of odor and does not involve learning, memory, complex decision making or statistical methods. We suggest that in turbulent plumes from a pulsating point source, an instantaneously measurable quantity referred as a "puff crossing time", improves the success rate as compared to the navigation strategies based on temporally regular zigzags due to intermittent contact, or an "internal counter", that do not use this information. Using computer simulations of fliers navigating in turbulent plumes of the pulsating point source for varying flow parameters such as turbulent intensities, plume meandering and wind gusts, we obtained statistics of navigation paths towards the pheromone sources. We quantified the probability of a successful navigation as well as the flight parameters such as the time spent searching and the total flight time, with respect to different turbulent intensities, meandering or gusts. The concepts learned using this model may help to design odor-based navigation of miniature airborne autonomous vehicles.

77 FR 43090 - Advisory Board on Radiation and Worker Health (ABRWH or Advisory Board), National Institute for...

Federal Register 2010, 2011, 2012, 2013, 2014

2012-07-23

... DEPARTMENT OF HEALTH AND HUMAN SERVICES Centers for Disease Control and Prevention Advisory Board on Radiation and Worker Health (ABRWH or Advisory Board), National Institute for Occupational Safety... Advisory Board was established under the Energy Employees Occupational Illness Compensation Program Act of...

75 FR 35496 - Advisory Board on Radiation and Worker Health (ABRWH or Advisory Board), National Institute for...

Federal Register 2010, 2011, 2012, 2013, 2014

2010-06-22

... DEPARTMENT OF HEALTH AND HUMAN SERVICES Centers for Disease Control and Prevention Advisory Board on Radiation and Worker Health (ABRWH or Advisory Board), National Institute for Occupational Safety... Advisory Board was established under the Energy Employees Occupational Illness Compensation Program Act of...

77 FR 32117 - Advisory Board on Radiation and Worker Health (ABRWH or Advisory Board), National Institute for...

Federal Register 2010, 2011, 2012, 2013, 2014

2012-05-31

... DEPARTMENT OF HEALTH AND HUMAN SERVICES Centers for Disease Control and Prevention Advisory Board on Radiation and Worker Health (ABRWH or Advisory Board), National Institute for Occupational Safety... Advisory Board was established under the Energy Employees Occupational Illness Compensation Program Act of...

76 FR 47590 - Advisory Board on Radiation and Worker Health (ABRWH or Advisory Board), National Institute for...

Federal Register 2010, 2011, 2012, 2013, 2014

2011-08-05

... DEPARTMENT OF HEALTH AND HUMAN SERVICES Centers for Disease Control and Prevention Advisory Board on Radiation and Worker Health (ABRWH or Advisory Board), National Institute for Occupational Safety... Advisory Board was established under the Energy Employees Occupational Illness Compensation Program Act of...

The Aging Navigational System.

PubMed

Lester, Adam W; Moffat, Scott D; Wiener, Jan M; Barnes, Carol A; Wolbers, Thomas

2017-08-30

The discovery of neuronal systems dedicated to computing spatial information, composed of functionally distinct cell types such as place and grid cells, combined with an extensive body of human-based behavioral and neuroimaging research has provided us with a detailed understanding of the brain's navigation circuit. In this review, we discuss emerging evidence from rodents, non-human primates, and humans that demonstrates how cognitive aging affects the navigational computations supported by these systems. Critically, we show 1) that navigational deficits cannot solely be explained by general deficits in learning and memory, 2) that there is no uniform decline across different navigational computations, and 3) that navigational deficits might be sensitive markers for impending pathological decline. Following an introduction to the mechanisms underlying spatial navigation and how they relate to general processes of learning and memory, the review discusses how aging affects the perception and integration of spatial information, the creation and storage of memory traces for spatial information, and the use of spatial information during navigational behavior. The closing section highlights the clinical potential of behavioral and neural markers of spatial navigation, with a particular emphasis on neurodegenerative disorders. Copyright © 2017 Elsevier Inc. All rights reserved.

A reactive system for open terrain navigation: Performance and limitations

NASA Technical Reports Server (NTRS)

Langer, D.; Rosenblatt, J.; Hebert, M.

1994-01-01

We describe a core system for autonomous navigation in outdoor natural terrain. The system consists of three parts: a perception module which processes range images to identify untraversable regions of the terrain, a local map management module which maintains a representation of the environment in the vicinity of the vehicle, and a planning module which issues commands to the vehicle controller. Our approach is to use the concept of 'early traversability evaluation', and on the use of reactive planning for generating commands to drive the vehicle. We argue that our approach leads to a robust and efficient navigation system. We illustrate our approach by an experiment in which a vehicle travelled autonomously for one kilometer through unmapped cross-country terrain.

75 FR 22560 - Federal Advisory Committee; Naval Research Advisory Committee; Charter Renewal

Federal Register 2010, 2011, 2012, 2013, 2014

2010-04-29

... DEPARTMENT OF DEFENSE Office of the Secretary Federal Advisory Committee; Naval Research Advisory... 102-3.50, the Department of Defense gives notice that it is renewing the charter for the Naval... independent advice and recommendations to the Secretary of the Navy, the Chief of Naval Operations and the...

A greedy-navigator approach to navigable city plans

NASA Astrophysics Data System (ADS)

Lee, Sang Hoon; Holme, Petter

2013-01-01

We use a set of four theoretical navigability indices for street maps to investigate the shape of the resulting street networks, if they are grown by optimizing these indices. The indices compare the performance of simulated navigators (having a partial information about the surroundings, like humans in many real situations) to the performance of optimally navigating individuals. We show that our simple greedy shortcut construction strategy generates the emerging structures that are different from real road network, but not inconceivable. The resulting city plans, for all navigation indices, share common qualitative properties such as the tendency for triangular blocks to appear, while the more quantitative features, such as degree distributions and clustering, are characteristically different depending on the type of metrics and routing strategies. We show that it is the type of metrics used which determines the overall shapes characterized by structural heterogeneity, but the routing schemes contribute to more subtle details of locality, which is more emphasized in case of unrestricted connections when the edge crossing is allowed.

5 CFR 724.403 - Advisory guidelines.

Code of Federal Regulations, 2011 CFR

2011-01-01

... 5 Administrative Personnel 2 2011-01-01 2011-01-01 false Advisory guidelines. 724.403 Section 724... (CONTINUED) IMPLEMENTATION OF TITLE II OF THE NOTIFICATION AND FEDERAL EMPLOYEE ANTIDISCRIMINATION AND RETALIATION ACT OF 2002 Best Practices § 724.403 Advisory guidelines. OPM will issue advisory guidelines to...

5 CFR 724.403 - Advisory guidelines.

Code of Federal Regulations, 2013 CFR

2013-01-01

... 5 Administrative Personnel 2 2013-01-01 2013-01-01 false Advisory guidelines. 724.403 Section 724... (CONTINUED) IMPLEMENTATION OF TITLE II OF THE NOTIFICATION AND FEDERAL EMPLOYEE ANTIDISCRIMINATION AND RETALIATION ACT OF 2002 Best Practices § 724.403 Advisory guidelines. OPM will issue advisory guidelines to...

5 CFR 724.403 - Advisory guidelines.

Code of Federal Regulations, 2014 CFR

2014-01-01

... 5 Administrative Personnel 2 2014-01-01 2014-01-01 false Advisory guidelines. 724.403 Section 724... (CONTINUED) IMPLEMENTATION OF TITLE II OF THE NOTIFICATION AND FEDERAL EMPLOYEE ANTIDISCRIMINATION AND RETALIATION ACT OF 2002 Best Practices § 724.403 Advisory guidelines. OPM will issue advisory guidelines to...

5 CFR 724.403 - Advisory guidelines.

Code of Federal Regulations, 2012 CFR

2012-01-01

... 5 Administrative Personnel 2 2012-01-01 2012-01-01 false Advisory guidelines. 724.403 Section 724... (CONTINUED) IMPLEMENTATION OF TITLE II OF THE NOTIFICATION AND FEDERAL EMPLOYEE ANTIDISCRIMINATION AND RETALIATION ACT OF 2002 Best Practices § 724.403 Advisory guidelines. OPM will issue advisory guidelines to...

Error Analysis System for Spacecraft Navigation Using the Global Positioning System (GPS)

NASA Technical Reports Server (NTRS)

Truong, S. H.; Hart, R. C.; Hartman, K. R.; Tomcsik, T. L.; Searl, J. E.; Bernstein, A.

1997-01-01

The Flight Dynamics Division (FDD) at the National Aeronautics and Space Administration (NASA) Goddard Space Flight Center (GSFC) is currently developing improved space-navigation filtering algorithms to use the Global Positioning System (GPS) for autonomous real-time onboard orbit determination. In connection with a GPS technology demonstration on the Small Satellite Technology Initiative (SSTI)/Lewis spacecraft, FDD analysts and programmers have teamed with the GSFC Guidance, Navigation, and Control Branch to develop the GPS Enhanced Orbit Determination Experiment (GEODE) system. The GEODE system consists of a Kalman filter operating as a navigation tool for estimating the position, velocity, and additional states required to accurately navigate the orbiting Lewis spacecraft by using astrodynamic modeling and GPS measurements from the receiver. A parallel effort at the FDD is the development of a GPS Error Analysis System (GEAS) that will be used to analyze and improve navigation filtering algorithms during development phases and during in-flight calibration. For GEAS, the Kalman filter theory is extended to estimate the errors in position, velocity, and other error states of interest. The estimation of errors in physical variables at regular intervals will allow the time, cause, and effect of navigation system weaknesses to be identified. In addition, by modeling a sufficient set of navigation system errors, a system failure that causes an observed error anomaly can be traced and accounted for. The GEAS software is formulated using Object Oriented Design (OOD) techniques implemented in the C++ programming language on a Sun SPARC workstation. The Phase 1 of this effort is the development of a basic system to be used to evaluate navigation algorithms implemented in the GEODE system. This paper presents the GEAS mathematical methodology, systems and operations concepts, and software design and implementation. Results from the use of the basic system to evaluate

75 FR 2542 - Science Advisory Board Staff Office Notification of a Public Meeting of the Science Advisory...

Federal Register 2010, 2011, 2012, 2013, 2014

2010-01-15

... ENVIRONMENTAL PROTECTION AGENCY [FRL-9104-2] Science Advisory Board Staff Office Notification of a Public Meeting of the Science Advisory Board Committee on Science Integration for Decisionmaking AGENCY... Agency) Science Advisory Board (SAB) Staff Office announces a public meeting of the SAB Committee on...

75 FR 9895 - Science Advisory Board Staff Office; Notification of a Public Meeting of the Science Advisory...

Federal Register 2010, 2011, 2012, 2013, 2014

2010-03-04

... ENVIRONMENTAL PROTECTION AGENCY [FRL-9122-2] Science Advisory Board Staff Office; Notification of a Public Meeting of the Science Advisory Board; Committee on Science Integration for Decision Making... Agency (EPA or Agency) Science Advisory Board (SAB) Staff Office announces a public meeting of the SAB...

76 FR 53671 - Federal Advisory Committee; Defense Intelligence Agency Advisory Board; Closed Meeting

Federal Register 2010, 2011, 2012, 2013, 2014

2011-08-29

... DEPARTMENT OF DEFENSE Office of the Secretary Federal Advisory Committee; Defense Intelligence Agency Advisory Board; Closed Meeting AGENCY: Defense Intelligence Agency (DIA), Department of Defense... amended), and 41 CFR 102-3.150 the Department of Defense announces that Defense Intelligence Agency...

75 FR 57743 - Unconventional Resources Technology Advisory Committee

Federal Register 2010, 2011, 2012, 2013, 2014

2010-09-22

... DEPARTMENT OF ENERGY Unconventional Resources Technology Advisory Committee AGENCY: Department of... of the Unconventional Resources Technology Advisory Committee. The Federal Advisory Committee Act... INFORMATION: Purpose of the Committee: The purpose of the Unconventional Resources Technology Advisory...

Autonomous self-navigating drug-delivery vehicles: from science fiction to reality.

PubMed

Petrenko, Valery A

2017-12-01

Low efficacy of targeted nanomedicines in biological experiments enforced us to challenge the traditional concept of drug targeting and suggest a paradigm of 'addressed self-navigating drug-delivery vehicles,' in which affinity selection of targeting peptides and vasculature-directed in vivo phage screening is replaced by the migration selection, which explores ability of 'promiscuous' phages and their proteins to migrate through the tumor-surrounding cellular barriers, using a 'hub and spoke' delivery strategy, and penetrate into the tumor affecting the diverse tumor cell population. The 'self-navigating' drug-delivery paradigm can be used as a theoretical and technical platform in design of a novel generation of molecular medications and imaging probes for precise and personal medicine. [Formula: see text].

78 FR 68430 - Unconventional Resources Technology Advisory Committee

Federal Register 2010, 2011, 2012, 2013, 2014

2013-11-14

... DEPARTMENT OF ENERGY Unconventional Resources Technology Advisory Committee AGENCY: Office of... meeting of the Unconventional Resources Technology Advisory Committee. The Federal Advisory Committee Act... the Unconventional Resources Technology Advisory Committee is to provide advice on development and...

78 FR 58294 - Unconventional Resources Technology Advisory Committee

Federal Register 2010, 2011, 2012, 2013, 2014

2013-09-23

... DEPARTMENT OF ENERGY Unconventional Resources Technology Advisory Committee AGENCY: Office of... meeting of the Unconventional Resources Technology Advisory Committee. The Federal Advisory Committee Act... the Unconventional Resources Technology Advisory Committee is to provide advice on development and...

77 FR 59182 - Unconventional Resources Technology Advisory Committee

Federal Register 2010, 2011, 2012, 2013, 2014

2012-09-26

... DEPARTMENT OF ENERGY Unconventional Resources Technology Advisory Committee AGENCY: Office of... meeting of the Unconventional Resources Technology Advisory Committee. The Federal Advisory Committee Act... INFORMATION: Purpose of the Committee: The purpose of the Unconventional Resources Technology Advisory...

76 FR 77990 - Unconventional Resources Technology Advisory Committee

Federal Register 2010, 2011, 2012, 2013, 2014

2011-12-15

... DEPARTMENT OF ENERGY Unconventional Resources Technology Advisory Committee AGENCY: Office of... meeting of the Unconventional Resources Technology Advisory Committee. The Federal Advisory Committee Act... INFORMATION: Purpose of the Committee: The purpose of the Unconventional Resources Technology Advisory...

78 FR 17924 - U.S. Strategic Command Strategic Advisory Group; Notice of Federal Advisory Committee Closed Meeting

Federal Register 2010, 2011, 2012, 2013, 2014

2013-03-25

... DEPARTMENT OF DEFENSE Office of the Secretary U.S. Strategic Command Strategic Advisory Group... following federal advisory committee: U.S. Strategic Command Strategic Advisory Group. DATES: April 18, 2013..., intelligence, and policy-related issues to the Commander, U.S. Strategic Command, during the development of the...

76 FR 71567 - Advisory Board on Radiation and Worker Health (ABRWH or Advisory Board), National Institute for...

Federal Register 2010, 2011, 2012, 2013, 2014

2011-11-18

... DEPARTMENT OF HEALTH AND HUMAN SERVICES Centers for Disease Control and Prevention Advisory Board on Radiation and Worker Health (ABRWH or Advisory Board), National Institute for Occupational Safety and Health (NIOSH) In accordance with section 10(a)(2) of the Federal Advisory Committee Act (Pub. L...

78 FR 69682 - Advisory Board on Radiation and Worker Health (ABRWH or Advisory Board), National Institute for...

Federal Register 2010, 2011, 2012, 2013, 2014

2013-11-20

... DEPARTMENT OF HEALTH AND HUMAN SERVICES Centers for Disease Control and Prevention (CDC) Advisory Board on Radiation and Worker Health (ABRWH or Advisory Board), National Institute for Occupational Safety and Health (NIOSH) In accordance with section 10(a)(2) of the Federal Advisory Committee Act (Pub...

76 FR 26301 - Advisory Board on Radiation and Worker Health (ABRWH or Advisory Board), National Institute for...

Federal Register 2010, 2011, 2012, 2013, 2014

2011-05-06

... DEPARTMENT OF HEALTH AND HUMAN SERVICES Centers for Disease Control and Prevention Advisory Board on Radiation and Worker Health (ABRWH or Advisory Board), National Institute for Occupational Safety and Health (NIOSH) In accordance with section 10(a)(2) of the Federal Advisory Committee Act (Pub. L...

Progressor: social navigation support through open social student modeling

NASA Astrophysics Data System (ADS)

Hsiao, I.-Han; Bakalov, Fedor; Brusilovsky, Peter; König-Ries, Birgitta

2013-06-01

The increased volumes of online learning content have produced two problems: how to help students to find the most appropriate resources and how to engage them in using these resources. Personalized and social learning have been suggested as potential ways to address these problems. Our work presented in this paper combines the ideas of personalized and social learning in the context of educational hypermedia. We introduce Progressor, an innovative Web-based tool based on the concepts of social navigation and open student modeling that helps students to find the most relevant resources in a large collection of parameterized self-assessment questions on Java programming. We have evaluated Progressor in a semester-long classroom study, the results of which are presented in this paper. The study confirmed the impact of personalized social navigation support provided by the system in the target context. The interface encouraged students to explore more topics attempting more questions and achieving higher success rates in answering them. A deeper analysis of the social navigation support mechanism revealed that the top students successfully led the way to discovering most relevant resources by creating clear pathways for weaker students.

78 FR 70932 - Unconventional Resources Technology Advisory Committee

Federal Register 2010, 2011, 2012, 2013, 2014

2013-11-27

... DEPARTMENT OF ENERGY Unconventional Resources Technology Advisory Committee AGENCY: Office of... meeting of the Unconventional Resources Technology Advisory Committee. The Federal Advisory Committee Act... of the Unconventional Resources Technology Advisory Committee is to provide advice on development and...

75 FR 57743 - Unconventional Resources Technology Advisory Committee

Federal Register 2010, 2011, 2012, 2013, 2014

2010-09-22

... DEPARTMENT OF ENERGY Unconventional Resources Technology Advisory Committee AGENCY: Department of... of the Unconventional Resources Technology Advisory Committee. The Federal Advisory Committee Act...: Purpose of the Committee: The purpose of the Unconventional Resources Technology Advisory Committee is to...

78 FR 53741 - Unconventional Resources Technology Advisory Committee

Federal Register 2010, 2011, 2012, 2013, 2014

2013-08-30

... DEPARTMENT OF ENERGY Unconventional Resources Technology Advisory Committee AGENCY: Office of... meeting of the Unconventional Resources Technology Advisory Committee. The Federal Advisory Committee Act... of the Unconventional Resources Technology Advisory Committee is to provide advice on development and...

75 FR 36346 - Olympic National Forest; Title II Resource Advisory Committee Meeting Advisory

Federal Register 2010, 2011, 2012, 2013, 2014

2010-06-25

... DEPARTMENT OF AGRICULTURE Olympic National Forest; Title II Resource Advisory Committee Meeting Advisory AGENCY: Olympic National Forest, USDA Forest Service. ACTION: Notice of meeting. SUMMARY: The... this meeting will be to review project proposals and provide recommendations for Title II projects to...

77 FR 2133 - Debt Management Advisory Committee Meeting

Federal Register 2010, 2011, 2012, 2013, 2014

2012-01-13

... DEPARTMENT OF THE TREASURY Debt Management Advisory Committee Meeting Notice is hereby given... management advisory committee: Treasury Borrowing Advisory Committee of the Securities Industry and Financial... financing operations. Historically, this advice has been offered by debt management advisory committees...

78 FR 22034 - Debt Management Advisory Committee Meeting

Federal Register 2010, 2011, 2012, 2013, 2014

2013-04-12

... DEPARTMENT OF THE TREASURY Debt Management Advisory Committee Meeting Notice is hereby given... management advisory committee: Treasury Borrowing Advisory Committee of The Securities Industry and Financial... financing operations. Historically, this advice has been offered by debt management advisory committees...

78 FR 62941 - Debt Management Advisory Committee Meeting

Federal Register 2010, 2011, 2012, 2013, 2014

2013-10-22

... DEPARTMENT OF THE TREASURY Debt Management Advisory Committee Meeting Notice is hereby given... management advisory committee: Treasury Borrowing Advisory Committee of The Securities Industry and Financial... financing operations. Historically, this advice has been offered by debt management advisory committees...

77 FR 5246 - Unconventional Resources Technology Advisory Committee

Federal Register 2010, 2011, 2012, 2013, 2014

2012-02-02

... DEPARTMENT OF ENERGY Unconventional Resources Technology Advisory Committee AGENCY: Office of... meeting of the Unconventional Resources Technology Advisory Committee. The Federal Advisory Committee Act... Committee: The purpose of the Unconventional Resources Technology Advisory Committee is to provide advice on...

77 FR 63300 - Unconventional Resources Technology Advisory Committee

Federal Register 2010, 2011, 2012, 2013, 2014

2012-10-16

... DEPARTMENT OF ENERGY Unconventional Resources Technology Advisory Committee AGENCY: Office of... meeting of the Unconventional Resources Technology Advisory Committee. The Federal Advisory Committee Act... Committee: The purpose of the Unconventional Resources Technology Advisory Committee is to provide advice on...

76 FR 64992 - Debt Management Advisory Committee; Meeting

Federal Register 2010, 2011, 2012, 2013, 2014

2011-10-19

... DEPARTMENT OF THE TREASURY Debt Management Advisory Committee; Meeting Notice is hereby given... management advisory committee: Treasury Borrowing Advisory Committee of the Securities Industry and Financial... operations. Historically, this advice has been offered by debt management advisory committees established by...

28 CFR 0.129 - Professional Responsibility Advisory Office.

Code of Federal Regulations, 2010 CFR

2010-07-01

... 28 Judicial Administration 1 2010-07-01 2010-07-01 false Professional Responsibility Advisory... OF JUSTICE 2-Professional Responsibility Advisory Office § 0.129 Professional Responsibility Advisory Office. (a) The Professional Responsibility Advisory Office is headed by a Director appointed by the...

The Rockefeller University Navigation Program: A Structured Multidisciplinary Protocol Development and Educational Program to Advance Translational Research

PubMed Central

Kost, Rhonda G.; Dowd, Kathleen A.; Hurley, Arlene M.; Rainer, Tyler‐Lauren; Coller, Barry S.

2014-01-01

Abstract The development of translational clinical research protocols is complex. To assist investigators, we developed a structured supportive guidance process (Navigation) to expedite protocol development to the standards of good clinical practice (GCP), focusing on research ethics and integrity. Navigation consists of experienced research coordinators leading investigators through a concerted multistep protocol development process from concept initiation to submission of the final protocol. To assess the effectiveness of Navigation, we collect data on the experience of investigators, the intensity of support required for protocol development, IRB review outcomes, and protocol start and completion dates. One hundred forty‐four protocols underwent Navigation and achieved IRB approval since the program began in 2007, including 37 led by trainee investigators, 26 led by MDs, 9 by MD/PhDs, 57 by PhDs, and 12 by investigators with other credentials (e.g., RN, MPH). In every year, more than 50% of Navigated protocols were approved by the IRB within 30 days. For trainees who had more than one protocol navigated, the intensity of Navigation support required decreased over time. Navigation can increase access to translational studies for basic scientists, facilitate GCP training for investigators, and accelerate development and approval of protocols of high ethical and scientific quality. PMID:24405608

Trajectory Design for a Single-String Impactor Concept

NASA Technical Reports Server (NTRS)

Dono Perez, Andres; Burton, Roland; Stupl, Jan; Mauro, David

2017-01-01

This paper introduces a trajectory design for a secondary spacecraft concept to augment science return in interplanetary missions. The concept consist of a single-string probe with a kinetic impactor on board that generates an artificial plume to perform in-situ sampling. The trajectory design was applied to a particular case study that samples ejecta particles from the Jovian moon Europa. Results were validated using statistical analysis. Details regarding the navigation, targeting and disposal challenges related to this concept are presented herein.

77 FR 47593 - Shoshone Resource Advisory Committee

Federal Register 2010, 2011, 2012, 2013, 2014

2012-08-09

... DEPARTMENT OF AGRICULTURE Forest Service Shoshone Resource Advisory Committee AGENCY: Forest Service, USDA. ACTION: Notice of meeting. SUMMARY: The Shoshone Resource Advisory Committee (Committee... CONTACT: Olga Troxel, Resource Advisory Committee Coordinator, Shoshone National Forest Supervisor's...

ITS Standards Advisory : Dynamic Message Signs (DMS)

DOT National Transportation Integrated Search

2003-01-01

ITS Standards Advisories provide the transportation community with information and guidance on key activities related to ITS standards, with each Advisory focusing on a single ITS application and its corresponding standards. This advisory focuses on ...

16 CFR 16.13 - Renewal of advisory committees.

Code of Federal Regulations, 2010 CFR

2010-01-01

... 16 Commercial Practices 1 2010-01-01 2010-01-01 false Renewal of advisory committees. 16.13 Section 16.13 Commercial Practices FEDERAL TRADE COMMISSION ORGANIZATION, PROCEDURES AND RULES OF PRACTICE ADVISORY COMMITTEE MANAGEMENT § 16.13 Renewal of advisory committees. (a) Any advisory committee...

16 CFR 16.12 - Termination of advisory committees.

Code of Federal Regulations, 2010 CFR

2010-01-01

... 16 Commercial Practices 1 2010-01-01 2010-01-01 false Termination of advisory committees. 16.12 Section 16.12 Commercial Practices FEDERAL TRADE COMMISSION ORGANIZATION, PROCEDURES AND RULES OF PRACTICE ADVISORY COMMITTEE MANAGEMENT § 16.12 Termination of advisory committees. Any advisory committee shall...

16 CFR 1018.13 - Non-statutory advisory committees.

Code of Federal Regulations, 2010 CFR

2010-01-01

... 16 Commercial Practices 2 2010-01-01 2010-01-01 false Non-statutory advisory committees. 1018.13 Section 1018.13 Commercial Practices CONSUMER PRODUCT SAFETY COMMISSION GENERAL ADVISORY COMMITTEE MANAGEMENT Establishment of Advisory Committees § 1018.13 Non-statutory advisory committees. (a) In proposing...

49 CFR 95.7 - Industry advisory committees: Membership.

Code of Federal Regulations, 2012 CFR

2012-10-01

... 49 Transportation 1 2012-10-01 2012-10-01 false Industry advisory committees: Membership. 95.7 Section 95.7 Transportation Office of the Secretary of Transportation ADVISORY COMMITTEES § 95.7 Industry advisory committees: Membership. Each industry advisory committee must be reasonably representative of the...

49 CFR 95.7 - Industry advisory committees: Membership.

Code of Federal Regulations, 2010 CFR

2010-10-01

... 49 Transportation 1 2010-10-01 2010-10-01 false Industry advisory committees: Membership. 95.7 Section 95.7 Transportation Office of the Secretary of Transportation ADVISORY COMMITTEES § 95.7 Industry advisory committees: Membership. Each industry advisory committee must be reasonably representative of the...

49 CFR 95.7 - Industry advisory committees: Membership.

Code of Federal Regulations, 2011 CFR

2011-10-01

... 49 Transportation 1 2011-10-01 2011-10-01 false Industry advisory committees: Membership. 95.7 Section 95.7 Transportation Office of the Secretary of Transportation ADVISORY COMMITTEES § 95.7 Industry advisory committees: Membership. Each industry advisory committee must be reasonably representative of the...

75 FR 17701 - High Energy Physics Advisory Panel

Federal Register 2010, 2011, 2012, 2013, 2014

2010-04-07

... DEPARTMENT OF ENERGY High Energy Physics Advisory Panel AGENCY: Department of Energy, Office of... Physics Advisory Panel (HEPAP). Federal Advisory Committee Act (Pub. L. 92-463, 86 Stat. 770) requires... Energy Physics Advisory Panel; U.S. Department of Energy; SC-25/ Germantown Building, 1000 Independence...

22 CFR 214.32 - Calling of advisory committee meetings.

Code of Federal Regulations, 2010 CFR

2010-04-01

... 22 Foreign Relations 1 2010-04-01 2010-04-01 false Calling of advisory committee meetings. 214.32 Section 214.32 Foreign Relations AGENCY FOR INTERNATIONAL DEVELOPMENT ADVISORY COMMITTEE MANAGEMENT Operation of Advisory Committees § 214.32 Calling of advisory committee meetings. (a) No advisory committee...

76 FR 41196 - Shoshone Resource Advisory Committee

Federal Register 2010, 2011, 2012, 2013, 2014

2011-07-13

... DEPARTMENT OF AGRICULTURE Forest Service Shoshone Resource Advisory Committee AGENCY: Forest Service, USDA. ACTION: Notice of meeting. SUMMARY: The Shoshone Resource Advisory Committee (Committee... INFORMATION CONTACT: Olga Troxel, Resource Advisory Committee Coordinator, Shoshone National Forest Supervisor...

76 FR 12317 - Shoshone Resource Advisory Committee

Federal Register 2010, 2011, 2012, 2013, 2014

2011-03-07

... DEPARTMENT OF AGRICULTURE Forest Service Shoshone Resource Advisory Committee AGENCY: Forest Service, USDA. ACTION: Notice of meeting. SUMMARY: The Shoshone Resource Advisory Committee (Committee..., Resource Advisory Committee Coordinator, Shoshone National Forest Supervisor's Office, (307) 578-5164...

75 FR 38086 - Technology Advisory Committee Meeting

Federal Register 2010, 2011, 2012, 2013, 2014

2010-07-01

... COMMODITY FUTURES TRADING COMMISSION Technology Advisory Committee Meeting The Commodity Futures Trading Commission's (``Commission'') Technology Advisory Committee will conduct a meeting on Wednesday... Technology Advisory Committee, which will inform the Commission of technological issues and developments...

77 FR 18786 - Eastern Washington Cascades Provincial Advisory Committee and the Yakima Provincial Advisory...

Federal Register 2010, 2011, 2012, 2013, 2014

2012-03-28

... DEPARTMENT OF AGRICULTURE Forest Service Eastern Washington Cascades Provincial Advisory Committee and the Yakima Provincial Advisory Committee AGENCY: Forest Service, USDA. ACTION: Notice of meeting... Chief's 10-Year Stewardship Challenge, Upper Yakima Basin Water Enhancement Project, Holden Mine...

49 CFR 95.11 - Meetings; industry advisory committees.

Code of Federal Regulations, 2010 CFR

2010-10-01

... 49 Transportation 1 2010-10-01 2010-10-01 false Meetings; industry advisory committees. 95.11... Meetings; industry advisory committees. (a) Meetings of an industry advisory committee may be held only at...) No industry advisory committee may receive, compile, or discuss data or reports showing the current...

49 CFR 95.11 - Meetings; industry advisory committees.

Code of Federal Regulations, 2012 CFR

2012-10-01

... 49 Transportation 1 2012-10-01 2012-10-01 false Meetings; industry advisory committees. 95.11... Meetings; industry advisory committees. (a) Meetings of an industry advisory committee may be held only at...) No industry advisory committee may receive, compile, or discuss data or reports showing the current...

49 CFR 95.11 - Meetings; industry advisory committees.

Code of Federal Regulations, 2011 CFR

2011-10-01

... 49 Transportation 1 2011-10-01 2011-10-01 false Meetings; industry advisory committees. 95.11... Meetings; industry advisory committees. (a) Meetings of an industry advisory committee may be held only at...) No industry advisory committee may receive, compile, or discuss data or reports showing the current...

77 FR 56607 - Shoshone Resource Advisory Committee

Federal Register 2010, 2011, 2012, 2013, 2014

2012-09-13

... DEPARTMENT OF AGRICULTURE Forest Service Shoshone Resource Advisory Committee AGENCY: Forest Service, USDA. ACTION: Notice of meeting. SUMMARY: The Shoshone Resource Advisory Committee (Committee) is... call. FOR FURTHER INFORMATION CONTACT: Olga Troxel, Resource Advisory Committee Coordinator, Shoshone...

Pilot factors guidelines for the operational inspection of navigation systems

NASA Technical Reports Server (NTRS)

Sadler, J. F.; Boucek, G. P.

1988-01-01

A computerized human engineered inspection technique is developed for use by FAA inspectors in evaluating the pilot factors aspects of aircraft navigation systems. The short title for this project is Nav Handbook. A menu-driven checklist, computer program and data base (Human Factors Design Criteria) were developed and merged to form a self-contained, portable, human factors inspection checklist tool for use in a laboratory or field setting. The automated checklist is tailored for general aviation navigation systems and can be expanded for use with other aircraft systems, transports or military aircraft. The Nav Handbook inspection concept was demonstrated using a lap-top computer and an Omega/VLF CDU. The program generates standardized inspection reports. Automated checklists for LORAN/C and R NAV were also developed. A Nav Handbook User's Guide is included.

75 FR 9416 - Advisory Committee Information Hotline

Federal Register 2010, 2011, 2012, 2013, 2014

2010-03-02

... Drugs Advisory Committee 3014512542 Peripheral and Central Nervous System Drugs Advisory Committee... Devices Panel 3014512624 Circulatory System Devices Panel 3014512625 Clinical Chemistry and Clinical... about any particular advisory committee meeting, this system will provide interested parties with timely...

77 FR 43064 - Meeting; Technology Advisory Committee

Federal Register 2010, 2011, 2012, 2013, 2014

2012-07-23

... COMMODITY FUTURES TRADING COMMISSION Meeting; Technology Advisory Committee AGENCY: Commodity Futures Trading Commission (CFTC). ACTION: Notice of emergency meeting of technology advisory committee. SUMMARY: The CFTC announces that on Thursday, July 26, 2012, the CFTC's Technology Advisory Committee...

22 CFR 214.2 - Definition of advisory committee.

Code of Federal Regulations, 2010 CFR

2010-04-01

... 22 Foreign Relations 1 2010-04-01 2010-04-01 false Definition of advisory committee. 214.2 Section 214.2 Foreign Relations AGENCY FOR INTERNATIONAL DEVELOPMENT ADVISORY COMMITTEE MANAGEMENT General § 214.2 Definition of advisory committee. (a) The term advisory committee is defined in section 3(2) of...

10 CFR 7.4 - Establishment of advisory committees.

Code of Federal Regulations, 2012 CFR

2012-01-01

... 10 Energy 1 2012-01-01 2012-01-01 false Establishment of advisory committees. 7.4 Section 7.4 Energy NUCLEAR REGULATORY COMMISSION ADVISORY COMMITTEES § 7.4 Establishment of advisory committees. (a) An NRC advisory committee may be established under this part only if its establishment— (1) Is...

10 CFR 7.4 - Establishment of advisory committees.

Code of Federal Regulations, 2014 CFR

2014-01-01

... 10 Energy 1 2014-01-01 2014-01-01 false Establishment of advisory committees. 7.4 Section 7.4 Energy NUCLEAR REGULATORY COMMISSION ADVISORY COMMITTEES § 7.4 Establishment of advisory committees. (a) An NRC advisory committee may be established under this part only if its establishment— (1) Is...

10 CFR 7.4 - Establishment of advisory committees.

Code of Federal Regulations, 2013 CFR

2013-01-01

... 10 Energy 1 2013-01-01 2013-01-01 false Establishment of advisory committees. 7.4 Section 7.4 Energy NUCLEAR REGULATORY COMMISSION ADVISORY COMMITTEES § 7.4 Establishment of advisory committees. (a) An NRC advisory committee may be established under this part only if its establishment— (1) Is...

10 CFR 7.4 - Establishment of advisory committees.

Code of Federal Regulations, 2010 CFR

2010-01-01

... 10 Energy 1 2010-01-01 2010-01-01 false Establishment of advisory committees. 7.4 Section 7.4 Energy NUCLEAR REGULATORY COMMISSION ADVISORY COMMITTEES § 7.4 Establishment of advisory committees. (a) An NRC advisory committee may be established under this part only if its establishment— (1) Is...

10 CFR 7.4 - Establishment of advisory committees.

Code of Federal Regulations, 2011 CFR

2011-01-01

... 10 Energy 1 2011-01-01 2011-01-01 false Establishment of advisory committees. 7.4 Section 7.4 Energy NUCLEAR REGULATORY COMMISSION ADVISORY COMMITTEES § 7.4 Establishment of advisory committees. (a) An NRC advisory committee may be established under this part only if its establishment— (1) Is...

Space shuttle navigation analysis. Volume 1: GPS aided navigation

NASA Technical Reports Server (NTRS)

Matchett, G. A.; Vogel, M. A.; Macdonald, T. J.

1980-01-01

Analytical studies related to space shuttle navigation are presented. Studies related to the addition of NAVSTAR Global Positioning System user equipment to the shuttle avionics suite are presented. The GPS studies center about navigation accuracy covariance analyses for both developmental and operational phases of GPS, as well as for various orbiter mission phases.

76 FR 3081 - Shoshone Resource Advisory Committee

Federal Register 2010, 2011, 2012, 2013, 2014

2011-01-19

... DEPARTMENT OF AGRICULTURE Forest Service Shoshone Resource Advisory Committee AGENCY: Forest Service, USDA. ACTION: Notice of meeting. SUMMARY: The Shoshone Resource Advisory Committee (Committee... meeting will be held via conference call. FOR FURTHER INFORMATION CONTACT: Olga Troxel, Resource Advisory...

78 FR 64910 - Virginia Resource Advisory Committee

Federal Register 2010, 2011, 2012, 2013, 2014

2013-10-30

... DEPARTMENT OF AGRICULTURE Forest Service Virginia Resource Advisory Committee AGENCY: Forest Service, USDA. ACTION: Notice of meetings. SUMMARY: The Virginia Resource Advisory Committee will meet in... Resource Advisory Committee meetings are subject to change or cancellation. Contact Michael Williams...

75 FR 46902 - Ketchikan Resource Advisory Committee

Federal Register 2010, 2011, 2012, 2013, 2014

2010-08-04

... DEPARTMENT OF AGRICULTURE Forest Service Ketchikan Resource Advisory Committee AGENCY: Forest Service, USDA. ACTION: Notice of meeting. SUMMARY: The Ketchikan Resource Advisory Committee will meet in..., 3031 Tongass Avenue, Ketchikan, Alaska. Send written comments to Ketchikan Resource Advisory Committee...

77 FR 47592 - Ketchikan Resource Advisory Committee

Federal Register 2010, 2011, 2012, 2013, 2014

2012-08-09

... DEPARTMENT OF AGRICULTURE Forest Service Ketchikan Resource Advisory Committee AGENCY: Forest Service, USDA. ACTION: Notice of meeting. SUMMARY: The Ketchikan Resource Advisory Committee will meet in... District, 3031 Tongass Avenue, Ketchikan, Alaska. Send written comments to Ketchikan Resource Advisory...

77 FR 51512 - Allegheny Resource Advisory Committee

Federal Register 2010, 2011, 2012, 2013, 2014

2012-08-24

... DEPARTMENT OF AGRICULTURE Forest Service Allegheny Resource Advisory Committee AGENCY: Forest Service, USDA. ACTION: Notice of meeting. SUMMARY: The Allegheny Resource Advisory Committee will meet in...: The following business will be conducted: Allegheny Resource Advisory Committee members will solicit...

76 FR 23537 - Resource Advisory Committee Meeting

Federal Register 2010, 2011, 2012, 2013, 2014

2011-04-27

... DEPARTMENT OF AGRICULTURE Resource Advisory Committee Meeting AGENCY: Forest Service, USDA. ACTION: Notice of Public Meeting, Sabine National Forest Resource Advisory Committee. SUMMARY: In accordance with.... Department of Agriculture, Forest Service, Sabine National Forest Resource Advisory Committee (RAC) meeting...

Evaluation of Pushback Decision-Support Tool Concept for Charlotte Douglas International Airport Ramp Operations

NASA Technical Reports Server (NTRS)

Hayashi, Miwa; Hoang, Ty; Jung, Yoon C.; Malik, Waqar; Lee, Hanbong; Dulchinos, Victoria L.

2015-01-01

This paper proposes a new departure pushback decision-support tool (DST) for airport ramp-tower controllers. It is based on NASA's Spot and Runway Departure Advisor (SARDA) collaborative decision-making concept, except with the modification that the gate releases now are controlled by tactical pushback (or gate-hold) advisories instead of strategic pre-assignments of target pushback times to individual departure flights. The proposed ramp DST relies on data exchange with the airport traffic control tower (ATCT) to coordinate pushbacks with the ATCT's flow-management intentions under current operational constraints, such as Traffic Management Initiative constraints. Airlines would benefit in reduced taxi delay and fuel burn. The concept was evaluated in a human-in-the-loop simulation experiment with current ramp-tower controllers at the Charlotte Douglas International Airport as participants. The results showed that the tool helped reduce taxi time by one minute per flight and overall departure flight fuel consumption by 10-12% without reducing runway throughput. Expect Departure Clearance Time (EDCT) conformance also was improved when advisories were provided. These benefits were attained without increasing the ramp-tower controllers' workload. Additionally, the advisories reduced the ATCT controllers' workload.

77 FR 18797 - Federal Advisory Committee; Defense Intelligence Agency (DIA) Advisory Board; Closed Meeting

Federal Register 2010, 2011, 2012, 2013, 2014

2012-03-28

... DEPARTMENT OF DEFENSE Office of the Secretary Federal Advisory Committee; Defense Intelligence... meeting necessarily includes discussions of classified information relating to DIA's intelligence... capabilities in support of current intelligence operations. Agenda May 2, 2012 S 8:30 a.m Convene Advisory...

76 FR 70425 - Federal Advisory Committee; Defense Intelligence Agency (DIA) Advisory Board; Closed Meeting

Federal Register 2010, 2011, 2012, 2013, 2014

2011-11-14

... DEPARTMENT OF DEFENSE Office of the Secretary Federal Advisory Committee; Defense Intelligence.... The meetings necessarily include discussions of classified information relating to DIA's intelligence... current intelligence operations. Agenda December 2, 2011 8:30 a.m Convene Advisory Mr. William Caniano...

77 FR 2277 - Federal Advisory Committee; Defense Intelligence Agency (DIA) Advisory Board; Closed Meeting

Federal Register 2010, 2011, 2012, 2013, 2014

2012-01-17

... DEPARTMENT OF DEFENSE Office of the Secretary Federal Advisory Committee; Defense Intelligence.... The meetings necessarily include discussions of classified information relating to DIA's intelligence... intelligence operations. Agenda February 24, 2012 8:30 a.m Convene Advisory Mr. William Caniano, Board Meeting...

Coordinating sensing and local navigation

NASA Technical Reports Server (NTRS)

Slack, Marc G.

1991-01-01

Based on Navigation Templates (or NaTs), this work presents a new paradigm for local navigation which addresses the noisy and uncertain nature of sensor data. Rather than creating a new navigation plan each time the robot's perception of the world changes, the technique incorporates perceptual changes directly into the existing navigation plan. In this way, the robot's navigation plan is quickly and continuously modified, resulting in actions that remain coordinated with its changing perception of the world.

76 FR 78717 - Public Meeting of a Joint Subcommittee of the Motor Carrier Safety Advisory Committee and the...

Federal Register 2010, 2011, 2012, 2013, 2014

2011-12-19

... Committee and the Medical Review Board; Obstructive Sleep Apnea AGENCY: Federal Motor Carrier Safety... Safety Advisory Committee (MCSAC) and Medical Review Board (MRB). SUMMARY: FMCSA announces that MCSAC and... ideas and concepts the Agency should consider for potential regulatory changes to the current physical...

Beach Advisory and Closing Online Notification (BEACON) system

EPA Pesticide Factsheets

Beach Advisory and Closing Online Notification system (BEACON) is a colletion of state and local data reported to EPA about beach closings and advisories. BEACON is the public-facing query of the Program tracking, Beach Advisories, Water quality standards, and Nutrients database (PRAWN) which tracks beach closing and advisory information.

77 FR 16894 - Financial Research Advisory Committee

Federal Register 2010, 2011, 2012, 2013, 2014

2012-03-22

... DEPARTMENT OF THE TREASURY Financial Research Advisory Committee AGENCY: Office of Financial Research, Treasury. ACTION: Notice of establishment of the Financial Research Advisory Committee and... is in the public interest to establish the Financial Research Advisory Committee. A Charter for the...

77 FR 10486 - Electricity Advisory Committee Meeting

Federal Register 2010, 2011, 2012, 2013, 2014

2012-02-22

... DEPARTMENT OF ENERGY Electricity Advisory Committee Meeting AGENCY: Office of Electricity Delivery... announces a meeting of the Electricity Advisory Committee (EAC). The Federal Advisory Committee Act (Pub. L... 20229. FOR FURTHER INFORMATION CONTACT: Matthew Rosenbaum, Office of Electricity Delivery and Energy...

78 FR 9038 - Electricity Advisory Committee Meeting

Federal Register 2010, 2011, 2012, 2013, 2014

2013-02-07

... DEPARTMENT OF ENERGY Electricity Advisory Committee Meeting AGENCY: Office of Electricity Delivery... announces a meeting of the Electricity Advisory Committee (EAC). The Federal Advisory Committee Act (Pub. L..., Arlington, Virginia 22203. FOR FURTHER INFORMATION CONTACT: Matthew Rosenbaum, Office of Electricity...

76 FR 10577 - Electricity Advisory Committee Meeting

Federal Register 2010, 2011, 2012, 2013, 2014

2011-02-25

... DEPARTMENT OF ENERGY Electricity Advisory Committee Meeting AGENCY: Office of Electricity Delivery... announces a meeting of the reestablished Electricity Advisory Committee (EAC). The Federal Advisory... CONTACT: David Meyer, Office of Electricity Delivery and Energy Reliability, U.S. Department of Energy...

75 FR 33241 - Coconino Resource Advisory Committee

Federal Register 2010, 2011, 2012, 2013, 2014

2010-06-11

... DEPARTMENT OF AGRICULTURE Forest Service Coconino Resource Advisory Committee AGENCY: Forest Service, USDA. ACTION: Notice of meeting. SUMMARY: The Coconino Resource Advisory Committee will meet in... 86341. Send written comments to Brady Smith, RAC Coordinator, Coconino Resource Advisory Committee, c/o...

75 FR 39656 - Coconino Resource Advisory Committee

Federal Register 2010, 2011, 2012, 2013, 2014

2010-07-12

... DEPARTMENT OF AGRICULTURE Forest Service Coconino Resource Advisory Committee AGENCY: Forest Service, USDA. ACTION: Notice of meeting. SUMMARY: The Coconino Resource Advisory Committee will meet in... Brady Smith, RAC Coordinator, Coconino Resource Advisory Committee, c/o Forest Service, USDA, 1824 S...

77 FR 50675 - Virginia Resource Advisory Committee

Federal Register 2010, 2011, 2012, 2013, 2014

2012-08-22

... DEPARTMENT OF AGRICULTURE Forest Service Virginia Resource Advisory Committee AGENCY: Forest Service, USDA. ACTION: Notice of meeting. SUMMARY: The Virginia Resource Advisory Committee will meet in... Contact. All reasonable accommodation requests are managed on a case by case basis. Resource Advisory...

75 FR 52304 - Coconino Resource Advisory Committee

Federal Register 2010, 2011, 2012, 2013, 2014

2010-08-25

... DEPARTMENT OF AGRICULTURE Forest Service Coconino Resource Advisory Committee AGENCY: Forest Service, USDA. ACTION: Notice of meeting. SUMMARY: The Coconino Resource Advisory Committee will meet in... Brady Smith. RAC Coordinator, Coconino Resource Advisory Committee, do Forest Service. USDA, 1824 5...

75 FR 6056 - National Geospatial Advisory Committee

Federal Register 2010, 2011, 2012, 2013, 2014

2010-02-05

... DEPARTMENT OF THE INTERIOR Office of the Secretary National Geospatial Advisory Committee AGENCY: Office of the Secretary, Interior. ACTION: Notice of renewal of National Geospatial Advisory Committee... renewed the National Geospatial Advisory Committee. The Committee will provide advice and recommendations...

75 FR 53707 - Homeland Security Advisory Council

Federal Register 2010, 2011, 2012, 2013, 2014

2010-09-01

... DEPARTMENT OF HOMELAND SECURITY [Docket No. DHS-2010-0074] Homeland Security Advisory Council... Meeting. SUMMARY: The Homeland Security Advisory Council (HSAC) will meet via teleconference for the... message. Fax: (202) 282-9207. Mail: Homeland Security Advisory Council, Department of Homeland Security...

76 FR 55079 - Homeland Security Advisory Council

Federal Register 2010, 2011, 2012, 2013, 2014

2011-09-06

... DEPARTMENT OF HOMELAND SECURITY [Docket No. DHS-2011-0063] Homeland Security Advisory Council... Meeting. SUMMARY: The Homeland Security Advisory Council (HSAC) will meet via teleconference for the...) 282-9207. Mail: Homeland Security Advisory Council, Department of Homeland Security, Mailstop 0445...

75 FR 26782 - Homeland Security Advisory Council

Federal Register 2010, 2011, 2012, 2013, 2014

2010-05-12

... DEPARTMENT OF HOMELAND SECURITY [Docket No. DHS-2010-0039] Homeland Security Advisory Council... Meeting. SUMMARY: The Homeland Security Advisory Council (HSAC) will meet via teleconference for the purpose of reviewing the final report of the HSAC's Quadrennial (Homeland Security) Review Advisory...

76 FR 58813 - Homeland Security Advisory Council

Federal Register 2010, 2011, 2012, 2013, 2014

2011-09-22

... DEPARTMENT OF HOMELAND SECURITY [Docket No. DHS-2011-0096] Homeland Security Advisory Council... meeting. SUMMARY: The Homeland Security Advisory Council (HSAC) will meet via teleconference for the...-9207 Mail: Homeland Security Advisory Council, Department of Homeland Security, Mailstop 0445, 245...

77 FR 64532 - Homeland Security Advisory Council

Federal Register 2010, 2011, 2012, 2013, 2014

2012-10-22

... DEPARTMENT OF HOMELAND SECURITY [Docket No. DHS-2012-0064] Homeland Security Advisory Council... meeting. SUMMARY: The Homeland Security Advisory Council (HSAC) will meet via teleconference for the...-9207 Mail: Homeland Security Advisory Council, Department of Homeland Security, Mailstop 0445, 245...

76 FR 21877 - Environmental Management Advisory Board

Federal Register 2010, 2011, 2012, 2013, 2014

2011-04-19

... DEPARTMENT OF ENERGY Environmental Management Advisory Board AGENCY: Department of Energy. ACTION: Notice of call for nominations for appointment to the Environmental Management Advisory Board. SUMMARY... Environmental Management Advisory Board. DATES: Nominations will be accepted through May 13, 2011. ADDRESSES...

A Low-Cost, Passive Navigation Training System for Image-Guided Spinal Intervention.

PubMed

Lorias-Espinoza, Daniel; Carranza, Vicente González; de León, Fernando Chico-Ponce; Escamirosa, Fernando Pérez; Martinez, Arturo Minor

2016-11-01

Navigation technology is used for training in various medical specialties, not least image-guided spinal interventions. Navigation practice is an important educational component that allows residents to understand how surgical instruments interact with complex anatomy and to learn basic surgical skills such as the tridimensional mental interpretation of bidimensional data. Inexpensive surgical simulators for spinal surgery, however, are lacking. We therefore designed a low-cost spinal surgery simulator (Spine MovDigSys 01) to allow 3-dimensional navigation via 2-dimensional images without altering or limiting the surgeon's natural movement. A training system was developed with an anatomical lumbar model and 2 webcams to passively digitize surgical instruments under MATLAB software control. A proof-of-concept recognition task (vertebral body cannulation) and a pilot test of the system with 12 neuro- and orthopedic surgeons were performed to obtain feedback on the system. Position, orientation, and kinematic variables were determined and the lateral, posteroanterior, and anteroposterior views obtained. The system was tested with a proof-of-concept experimental task. Operator metrics including time of execution (t), intracorporeal length (d), insertion angle (α), average speed (v¯), and acceleration (a) were obtained accurately. These metrics were converted into assessment metrics such as smoothness of operation and linearity of insertion. Results from initial testing are shown and the system advantages and disadvantages described. This low-cost spinal surgery training system digitized the position and orientation of the instruments and allowed image-guided navigation, the generation of metrics, and graphic recording of the instrumental route. Spine MovDigSys 01 is useful for development of basic, noninnate skills and allows the novice apprentice to quickly and economically move beyond the basics. Copyright © 2016 Elsevier Inc. All rights reserved.

33 CFR 209.325 - Navigation lights, aids to navigation, navigation charts, and related data policy, practices and...

Code of Federal Regulations, 2014 CFR

2014-07-01

... Navigation and Navigable Waters CORPS OF ENGINEERS, DEPARTMENT OF THE ARMY, DEPARTMENT OF DEFENSE...), will report the channel conditions promptly, using standard tabular forms, to: Director, Defense... operations in important channels in tidal waters—either in progress and not already reported, or soon to be...

Preliminary navigation accuracy analysis for the TDRSS Onboard Navigation System (TONS) experiment on EP/EUVE

NASA Technical Reports Server (NTRS)

Gramling, C. J.; Long, A. C.; Lee, T.; Ottenstein, N. A.; Samii, M. V.

1991-01-01

A Tracking and Data Relay Satellite System (TDRSS) Onboard Navigation System (TONS) is currently being developed by NASA to provide a high accuracy autonomous navigation capability for users of TDRSS and its successor, the Advanced TDRSS (ATDRSS). The fully autonomous user onboard navigation system will support orbit determination, time determination, and frequency determination, based on observation of a continuously available, unscheduled navigation beacon signal. A TONS experiment will be performed in conjunction with the Explorer Platform (EP) Extreme Ultraviolet Explorer (EUVE) mission to flight quality TONS Block 1. An overview is presented of TONS and a preliminary analysis of the navigation accuracy anticipated for the TONS experiment. Descriptions of the TONS experiment and the associated navigation objectives, as well as a description of the onboard navigation algorithms, are provided. The accuracy of the selected algorithms is evaluated based on the processing of realistic simulated TDRSS one way forward link Doppler measurements. The analysis process is discussed and the associated navigation accuracy results are presented.

75 FR 7440 - Eastern Washington Cascades Provincial Advisory Committee and the Yakima Provincial Advisory...

Federal Register 2010, 2011, 2012, 2013, 2014

2010-02-19

... DEPARTMENT OF AGRICULTURE Forest Service Eastern Washington Cascades Provincial Advisory Committee and the Yakima Provincial Advisory Committee AGENCY: Forest Service, USDA. ACTION: Notice of meeting... Committee will meet on March 9, 2010 at the Sunnyslope Fire Station, 206 Easy Street, Wenatchee, WA. During...

75 FR 61693 - Coconino Resource Advisory Committee

Federal Register 2010, 2011, 2012, 2013, 2014

2010-10-06

... DEPARTMENT OF AGRICULTURE Forest Service Coconino Resource Advisory Committee AGENCY: Forest Service, USDA. ACTION: Notice of meeting. SUMMARY: The Coconino Resource Advisory Committee will meet in Flagstaff, Arizona. The purpose of the meeting is to receive training on Resource Advisory Committees and...

76 FR 3081 - Sitka Resource Advisory Committee

Federal Register 2010, 2011, 2012, 2013, 2014

2011-01-19

... DEPARTMENT OF AGRICULTURE Forest Service Sitka Resource Advisory Committee AGENCY: Forest Service, USDA. ACTION: Notice of meeting. SUMMARY: The Sitka Resource Advisory Committee will meet in Sitka...., Sitka, Alaska. Send written comments to Sitka Resource Advisory Committee, c/o District Ranger, USDA...

77 FR 54876 - Colville Resource Advisory Committee

Federal Register 2010, 2011, 2012, 2013, 2014

2012-09-06

... DEPARTMENT OF AGRICULTURE Forest Service Colville Resource Advisory Committee AGENCY: Forest Service, USDA. ACTION: Notice of meeting. SUMMARY: The Colville Resource Advisory Committee will meet in..., presentation and voting of 2012 Colville Resource Advisory Committee projects. The full agenda may be previewed...

76 FR 85 - Coconino Resource Advisory Committee

Federal Register 2010, 2011, 2012, 2013, 2014

2011-01-03

... DEPARTMENT OF AGRICULTURE Forest Service Coconino Resource Advisory Committee AGENCY: Forest Service, USDA. ACTION: Notice of meeting. SUMMARY: The Coconino Resource Advisory Committee will meet in... Resource Advisory Committee, c/o Forest Service, USDA, 1824 S. Thompson St., Flagstaff, Arizona 86001 or...

75 FR 65295 - Sitka Resource Advisory Committee

Federal Register 2010, 2011, 2012, 2013, 2014

2010-10-22

... DEPARTMENT OF AGRICULTURE Forest Service Sitka Resource Advisory Committee AGENCY: Forest Service, USDA. ACTION: Notice of meeting. SUMMARY: The Sitka Resource Advisory Committee will meet in Sitka..., 204 Siginaka Way, Sitka, Alaska. Send written comments to Sitka Resource Advisory Committee, c/o...

77 FR 26774 - Homeland Security Advisory Council

Federal Register 2010, 2011, 2012, 2013, 2014

2012-05-07

... DEPARTMENT OF HOMELAND SECURITY [Docket No. DHS-2012-0021] Homeland Security Advisory Council.... SUMMARY: The Homeland Security Advisory Council (HSAC) will meet in person and members of the public may...-9207. Mail: Homeland Security Advisory Council, Department of Homeland Security, Mailstop 0450, 245...

77 FR 67809 - Nuclear Energy Advisory Committee

Federal Register 2010, 2011, 2012, 2013, 2014

2012-11-14

... DEPARTMENT OF ENERGY Nuclear Energy Advisory Committee AGENCY: Department of Energy, Office of Nuclear Energy. ACTION: Notice of Open Meeting. SUMMARY: This notice announces a meeting of the Nuclear Energy Advisory Committee (NEAC). Federal Advisory Committee Act requires that public notice of these...

76 FR 54747 - State Energy Advisory Board

Federal Register 2010, 2011, 2012, 2013, 2014

2011-09-02

... DEPARTMENT OF ENERGY Energy Efficiency and Renewable Energy State Energy Advisory Board AGENCY: Energy Efficiency and Renewable Energy, Department of Energy. ACTION: Notice of open meeting. SUMMARY: This notice announces an open meeting of the State Energy Advisory Board (STEAB). The Federal Advisory...

76 FR 2672 - Science Advisory Board Meeting

Federal Register 2010, 2011, 2012, 2013, 2014

2011-01-14

... DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration Science Advisory Board... forth the schedule and proposed agenda of a forthcoming meeting of the NOAA Science Advisory Board. The... CONTACT: Dr. Cynthia Decker, Executive Director, Science Advisory Board, NOAA, Rm. 11230, 1315 East-West...

Apollo experience report guidance and control systems: Primary guidance, navigation, and control system development

NASA Technical Reports Server (NTRS)

Holley, M. D.; Swingle, W. L.; Bachman, S. L.; Leblanc, C. J.; Howard, H. T.; Biggs, H. M.

1976-01-01

The primary guidance, navigation, and control systems for both the lunar module and the command module are described. Development of the Apollo primary guidance systems is traced from adaptation of the Polaris Mark II system through evolution from Block I to Block II configurations; the discussion includes design concepts used, test and qualification programs performed, and major problems encountered. The major subsystems (inertial, computer, and optical) are covered. Separate sections on the inertial components (gyroscopes and accelerometers) are presented because these components represent a major contribution to the success of the primary guidance, navigation, and control system.

29 CFR 1912.36 - Advice of advisory committees.

Code of Federal Regulations, 2010 CFR

2010-07-01

... members of an advisory committee shall not be a reason for not giving advice to the Assistant Secretary... 29 Labor 7 2010-07-01 2010-07-01 false Advice of advisory committees. 1912.36 Section 1912.36... Advice of advisory committees. (a) Approval by a majority of all members of an advisory committee is...

29 CFR 1912.36 - Advice of advisory committees.

Code of Federal Regulations, 2011 CFR

2011-07-01

... members of an advisory committee shall not be a reason for not giving advice to the Assistant Secretary... 29 Labor 7 2011-07-01 2011-07-01 false Advice of advisory committees. 1912.36 Section 1912.36... Advice of advisory committees. (a) Approval by a majority of all members of an advisory committee is...

Impact of Patient Navigation on Timely Cancer Care: The Patient Navigation Research Program

PubMed Central

Battaglia, Tracy A.; Calhoun, Elizabeth; Darnell, Julie S.; Dudley, Donald J.; Fiscella, Kevin; Hare, Martha L.; LaVerda, Nancy; Lee, Ji-Hyun; Levine, Paul; Murray, David M.; Patierno, Steven R.; Raich, Peter C.; Roetzheim, Richard G.; Simon, Melissa; Snyder, Frederick R.; Warren-Mears, Victoria; Whitley, Elizabeth M.; Winters, Paul; Young, Gregory S.; Paskett, Electra D.

2014-01-01

Background Patient navigation is a promising intervention to address cancer disparities but requires a multisite controlled trial to assess its effectiveness. Methods The Patient Navigation Research Program compared patient navigation with usual care on time to diagnosis or treatment for participants with breast, cervical, colorectal, or prostate screening abnormalities and/or cancers between 2007 and 2010. Patient navigators developed individualized strategies to address barriers to care, with the focus on preventing delays in care. To assess timeliness of diagnostic resolution, we conducted a meta-analysis of center- and cancer-specific adjusted hazard ratios (aHRs) comparing patient navigation vs usual care. To assess initiation of cancer therapy, we calculated a single aHR, pooling data across all centers and cancer types. We conducted a metaregression to evaluate variability across centers. All statistical tests were two-sided. Results The 10521 participants with abnormal screening tests and 2105 with a cancer or precancer diagnosis were predominantly from racial/ethnic minority groups (73%) and publically insured (40%) or uninsured (31%). There was no benefit during the first 90 days of care, but a benefit of navigation was seen from 91 to 365 days for both diagnostic resolution (aHR = 1.51; 95% confidence interval [CI] = 1.23 to 1.84; P < .001)) and treatment initiation (aHR = 1.43; 95% CI = 1.10 to 1.86; P < .007). Metaregression revealed that navigation had its greatest benefits within centers with the greatest delays in follow-up under usual care. Conclusions Patient navigation demonstrated a moderate benefit in improving timely cancer care. These results support adoption of patient navigation in settings that serve populations at risk of being lost to follow-up. PMID:24938303

The navigation of homing pigeons: Do they use sun Navigation?

NASA Technical Reports Server (NTRS)

Walcott, C.

1972-01-01

Experiments to determine the dependence of homing pigeons on the sun as a navigational cue are discussed. Various methods were employed to interrupt the circadian rhythms of the pigeons prior to release. It was determined that the sun may serve as a compass, but that topographic features are more important for navigation. The effects of a magnetic field produced by electric equipment carried by the bird were also investigated. It was concluded that magnetic fields may have a small effect on the homing ability. The exact nature of the homing pigeon's navigational ability is still unknown after years of elaborate experimentation.

45 CFR 1222.4 - Advisory group responsibilities.

Code of Federal Regulations, 2014 CFR

2014-10-01

... 45 Public Welfare 4 2014-10-01 2014-10-01 false Advisory group responsibilities. 1222.4 Section... COMMUNITY SERVICE PARTICIPATION OF PROJECT BENEFICIARIES § 1222.4 Advisory group responsibilities. The advisory group shall have the following responsibilities for the intent and purposes of these requirements...

45 CFR 1222.4 - Advisory group responsibilities.

Code of Federal Regulations, 2013 CFR

2013-10-01

... 45 Public Welfare 4 2013-10-01 2013-10-01 false Advisory group responsibilities. 1222.4 Section... COMMUNITY SERVICE PARTICIPATION OF PROJECT BENEFICIARIES § 1222.4 Advisory group responsibilities. The advisory group shall have the following responsibilities for the intent and purposes of these requirements...

45 CFR 1222.4 - Advisory group responsibilities.

Code of Federal Regulations, 2012 CFR

2012-10-01

... 45 Public Welfare 4 2012-10-01 2012-10-01 false Advisory group responsibilities. 1222.4 Section... COMMUNITY SERVICE PARTICIPATION OF PROJECT BENEFICIARIES § 1222.4 Advisory group responsibilities. The advisory group shall have the following responsibilities for the intent and purposes of these requirements...

16 CFR 1018.61 - Statutory advisory committees.

Code of Federal Regulations, 2010 CFR

2010-01-01

... 16 Commercial Practices 2 2010-01-01 2010-01-01 false Statutory advisory committees. 1018.61 Section 1018.61 Commercial Practices CONSUMER PRODUCT SAFETY COMMISSION GENERAL ADVISORY COMMITTEE MANAGEMENT Termination and Renewal § 1018.61 Statutory advisory committees. A new charter shall be filed for...

45 CFR 1222.4 - Advisory group responsibilities.

Code of Federal Regulations, 2010 CFR

2010-10-01

... 45 Public Welfare 4 2010-10-01 2010-10-01 false Advisory group responsibilities. 1222.4 Section... COMMUNITY SERVICE PARTICIPATION OF PROJECT BENEFICIARIES § 1222.4 Advisory group responsibilities. The advisory group shall have the following responsibilities for the intent and purposes of these requirements...

78 FR 54680 - NASA Federal Advisory Committees

Federal Register 2010, 2011, 2012, 2013, 2014

2013-09-05

... NATIONAL AERONAUTICS AND SPACE ADMINISTRATION [Notice: 13-109] NASA Federal Advisory Committees... by U.S. Citizens for Service on NASA Federal Advisory Committees. SUMMARY: NASA announces its annual invitation for public nominations for service on NASA Federal advisory committees. U.S. citizens may nominate...

75 FR 20371 - Homeland Security Advisory Council

Federal Register 2010, 2011, 2012, 2013, 2014

2010-04-19

... DEPARTMENT OF HOMELAND SECURITY [Docket No. DHS-2010-0030] Homeland Security Advisory Council... Meeting. SUMMARY: The Homeland Security Advisory Council (HSAC) will meet via teleconference for the... number in the subject line of the message. Fax: (202) 282-9207 Mail: Homeland Security Advisory Council...

75 FR 67351 - Environmental Management Advisory Board

Federal Register 2010, 2011, 2012, 2013, 2014

2010-11-02

... DEPARTMENT OF ENERGY Environmental Management Advisory Board AGENCY: Department of Energy. ACTION... Management Advisory Board (EMAB). The Federal Advisory Committee Act (Pub. L. No. 92-463, 86 Stat. 770... Management (EM) with advice and recommendations on corporate issues confronting the EM program. EMAB will...

75 FR 7255 - Army Educational Advisory Committee

Federal Register 2010, 2011, 2012, 2013, 2014

2010-02-18

... DEPARTMENT OF DEFENSE Department of the Army Army Educational Advisory Committee AGENCY: Department of the Army, DoD. ACTION: Notice of open meeting. SUMMARY: Pursuant to the Federal Advisory... Committee: U.S. Army War College Subcommittee of the Army Education Advisory Committee. Date of Meeting...

76 FR 72914 - Army Educational Advisory Committee

Federal Register 2010, 2011, 2012, 2013, 2014

2011-11-28

... DEPARTMENT OF DEFENSE Department of the Army Army Educational Advisory Committee AGENCY: Department of the Army, DoD. ACTION: Notice of open meeting. SUMMARY: Pursuant to the Federal Advisory...: U.S. Army War College Subcommittee of the Army Education Advisory Committee. Dates of Meeting...

76 FR 12087 - Army Educational Advisory Committee

Federal Register 2010, 2011, 2012, 2013, 2014

2011-03-04

... DEPARTMENT OF DEFENSE Department of the Army Army Educational Advisory Committee AGENCY: Department of the Army, DoD. ACTION: Notice of open meeting. SUMMARY: Pursuant to the Federal Advisory...: U.S. Army War College Subcommittee of the Army Education Advisory Committee. Dates of Meeting: March...

75 FR 67351 - Nuclear Energy Advisory Committee

Federal Register 2010, 2011, 2012, 2013, 2014

2010-11-02

... DEPARTMENT OF ENERGY Nuclear Energy Advisory Committee AGENCY: Office of Nuclear Energy, Department of Energy. ACTION: Notice of open meeting. SUMMARY: This notice announces a meeting of the Nuclear Energy Advisory Committee (NEAC). The Federal Advisory Committee Act (Pub. L. 92-463, 86 Stat. 770...

78 FR 29125 - Nuclear Energy Advisory Committee

Federal Register 2010, 2011, 2012, 2013, 2014

2013-05-17

... DEPARTMENT OF ENERGY Nuclear Energy Advisory Committee AGENCY: Office of Nuclear Energy, Department of Energy. ACTION: Notice of open meeting. SUMMARY: This notice announces a meeting of the Nuclear Energy Advisory Committee (NEAC). Federal Advisory Committee Act (Pub. L. 94-463, 86 Stat. 770) requires...

76 FR 67717 - Nuclear Energy Advisory Committee

Federal Register 2010, 2011, 2012, 2013, 2014

2011-11-02

... DEPARTMENT OF ENERGY Nuclear Energy Advisory Committee AGENCY: Department of Energy, Office of Nuclear Energy. ACTION: Notice of open meeting. SUMMARY: This notice announces a meeting of the Nuclear Energy Advisory Committee (NEAC). The Federal Advisory Committee Act (Pub. L. 92-463, 86 Stat. 770...

75 FR 13269 - Nuclear Energy Advisory Committee

Federal Register 2010, 2011, 2012, 2013, 2014

2010-03-19

... DEPARTMENT OF ENERGY Nuclear Energy Advisory Committee AGENCY: Department of Energy, Office of Nuclear Energy. ACTION: Notice of open meeting. SUMMARY: This notice announces a meeting of the Nuclear Energy Advisory Committee (NEAC). The Federal Advisory Committee Act (Pub. L. 92-463, 86 Stat. 770...

77 FR 26274 - Nuclear Energy Advisory Committee

Federal Register 2010, 2011, 2012, 2013, 2014

2012-05-03

... DEPARTMENT OF ENERGY Nuclear Energy Advisory Committee AGENCY: Department of Energy, Office of Nuclear Energy. ACTION: Notice of open meeting. SUMMARY: This notice announces a meeting of the Nuclear Energy Advisory Committee (NEAC). The Federal Advisory Committee Act (Pub. Law 92-463, 86 Stat. 770...

75 FR 56997 - Global Markets Advisory Committee

Federal Register 2010, 2011, 2012, 2013, 2014

2010-09-17

... COMMODITY FUTURES TRADING COMMISSION Global Markets Advisory Committee AGENCY: Commodity Futures Trading Commission (``CFTC''). ACTION: Notice of meeting of Global Markets Advisory Committee. SUMMARY: The Global Markets Advisory Committee will hold a public meeting on October 5, 2010, from 1 p.m. to 5...

75 FR 58367 - Technology Advisory Committee Meeting

Federal Register 2010, 2011, 2012, 2013, 2014

2010-09-24

... COMMODITY FUTURES TRADING COMMISSION Technology Advisory Committee Meeting AGENCY: Commodity Futures Trading Commission (``CFTC''). ACTION: Notice of meeting of Technology Advisory Committee. SUMMARY: The Technology Advisory Committee will hold a public meeting on October 12, 2010, from 1 p.m. to 5 p.m...

Mars Rover Concept Vehicle

NASA Image and Video Library

2017-06-05

The scientifically-themed Mars rover concept vehicle operates on an electric motor, powered by solar panels and a 700-volt battery. The rover separates in the middle with the front area designed for scouting and equipped with a radio and navigation provided by the Global Positioning System. The back section serves as a full laboratory which can disconnect for autonomous research. The "Summer of Mars" promotion is designed to provide guests with a better understanding of NASA's studies of the Red Planet. The builders of the rover, Parker Brothers Concepts of Port Canaveral, Florida, incorporated input into its design from NASA subject matter experts.

Markovian robots: Minimal navigation strategies for active particles

NASA Astrophysics Data System (ADS)

Nava, Luis Gómez; Großmann, Robert; Peruani, Fernando

2018-04-01

We explore minimal navigation strategies for active particles in complex, dynamical, external fields, introducing a class of autonomous, self-propelled particles which we call Markovian robots (MR). These machines are equipped with a navigation control system (NCS) that triggers random changes in the direction of self-propulsion of the robots. The internal state of the NCS is described by a Boolean variable that adopts two values. The temporal dynamics of this Boolean variable is dictated by a closed Markov chain—ensuring the absence of fixed points in the dynamics—with transition rates that may depend exclusively on the instantaneous, local value of the external field. Importantly, the NCS does not store past measurements of this value in continuous, internal variables. We show that despite the strong constraints, it is possible to conceive closed Markov chain motifs that lead to nontrivial motility behaviors of the MR in one, two, and three dimensions. By analytically reducing the complexity of the NCS dynamics, we obtain an effective description of the long-time motility behavior of the MR that allows us to identify the minimum requirements in the design of NCS motifs and transition rates to perform complex navigation tasks such as adaptive gradient following, detection of minima or maxima, or selection of a desired value in a dynamical, external field. We put these ideas in practice by assembling a robot that operates by the proposed minimalistic NCS to evaluate the robustness of MR, providing a proof of concept that is possible to navigate through complex information landscapes with such a simple NCS whose internal state can be stored in one bit. These ideas may prove useful for the engineering of miniaturized robots.

22 CFR 8.9 - Meetings of advisory committees.

Code of Federal Regulations, 2010 CFR

2010-04-01

... 22 Foreign Relations 1 2010-04-01 2010-04-01 false Meetings of advisory committees. 8.9 Section 8.9 Foreign Relations DEPARTMENT OF STATE GENERAL ADVISORY COMMITTEE MANAGEMENT § 8.9 Meetings of advisory committees. (a) Applicability. The term “meeting” covers any situation in which all or some of the members of an advisory committee convene with...

Optimal motion planning using navigation measure

NASA Astrophysics Data System (ADS)

Vaidya, Umesh

2018-05-01

We introduce navigation measure as a new tool to solve the motion planning problem in the presence of static obstacles. Existence of navigation measure guarantees collision-free convergence at the final destination set beginning with almost every initial condition with respect to the Lebesgue measure. Navigation measure can be viewed as a dual to the navigation function. While the navigation function has its minimum at the final destination set and peaks at the obstacle set, navigation measure takes the maximum value at the destination set and is zero at the obstacle set. A linear programming formalism is proposed for the construction of navigation measure. Set-oriented numerical methods are utilised to obtain finite dimensional approximation of this navigation measure. Application of the proposed navigation measure-based theoretical and computational framework is demonstrated for a motion planning problem in a complex fluid flow.

A navigation system for the visually impaired using colored navigation lines and RFID tags.

PubMed

Seto, First Tatsuya

2009-01-01

In this paper, we describe about a developed navigation system that supports the independent walking of the visually impaired in the indoor space. Our developed instrument consists of a navigation system and a map information system. These systems are installed on a white cane. Our navigation system can follow a colored navigation line that is set on the floor. In this system, a color sensor installed on the tip of a white cane senses the colored navigation line, and the system informs the visually impaired that he/she is walking along the navigation line by vibration. The color recognition system is controlled by a one-chip microprocessor and this system can discriminate 6 colored navigation lines. RFID tags and a receiver for these tags are used in the map information system. The RFID tags and the RFID tag receiver are also installed on a white cane. The receiver receives tag information and notifies map information to the user by mp3 formatted pre-recorded voice. Three normal subjects who were blindfolded with an eye mask were tested with this system. All of them were able to walk along the navigation line. The performance of the map information system was good. Therefore, our system will be extremely valuable in supporting the activities of the visually impaired.

78 FR 11899 - Invasive Species Advisory Committee

Federal Register 2010, 2011, 2012, 2013, 2014

2013-02-20

... DEPARTMENT OF THE INTERIOR Office of the Secretary Invasive Species Advisory Committee AGENCY... notice of public meetings of the Invasive Species Advisory Committee. The document contained incorrect..., March 6, 2013; 9 a.m. to 1:45 p.m. Meeting of the Invasive Species Advisory Committee (OPEN): Thursday...

36 CFR 242.12 - Local advisory committees.

Code of Federal Regulations, 2010 CFR

2010-07-01

... 36 Parks, Forests, and Public Property 2 2010-07-01 2010-07-01 false Local advisory committees... SUBSISTENCE MANAGEMENT REGULATIONS FOR PUBLIC LANDS IN ALASKA Program Structure § 242.12 Local advisory committees. (a) The Board shall establish such local Federal Advisory Committees within each region as...

36 CFR 242.12 - Local advisory committees.

Code of Federal Regulations, 2011 CFR

2011-07-01

... 36 Parks, Forests, and Public Property 2 2011-07-01 2011-07-01 false Local advisory committees... SUBSISTENCE MANAGEMENT REGULATIONS FOR PUBLIC LANDS IN ALASKA Program Structure § 242.12 Local advisory committees. (a) The Board shall establish such local Federal Advisory Committees within each region as...

76 FR 2081 - Ketchikan Resource Advisory Committee

Federal Register 2010, 2011, 2012, 2013, 2014

2011-01-12

... Resource Advisory Committee AGENCY: Forest Service, USDA. ACTION: Notice of meeting. SUMMARY: The Ketchikan Resource Advisory Committee will meet in Ketchikan, Alaska, March 29, 2011. The purpose of this meeting is... written comments to Ketchikan Resource Advisory Committee, c/o District Ranger, USDA Forest Service, 3031...

76 FR 31935 - Juneau Resource Advisory Committee

Federal Register 2010, 2011, 2012, 2013, 2014

2011-06-02

... DEPARTMENT OF AGRICULTURE Forest Service Juneau Resource Advisory Committee AGENCY: Forest Service, USDA. ACTION: Notice of meeting. SUMMARY: The Juneau Resource Advisory Committee will meet in Juneau... Atadero, Juneau Resource Advisory Committee, PO Box 21628, Juneau, AK 99802, or by e-mail to [email protected

29 CFR 1430.8 - Advisory committee meetings.

Code of Federal Regulations, 2010 CFR

2010-07-01

... 29 Labor 4 2010-07-01 2010-07-01 false Advisory committee meetings. 1430.8 Section 1430.8 Labor Regulations Relating to Labor (Continued) FEDERAL MEDIATION AND CONCILIATION SERVICE FEDERAL MEDIATION AND CONCILIATION SERVICE ADVISORY COMMITTEES § 1430.8 Advisory committee meetings. (a) Initiation of meetings. (1...

78 FR 70932 - Nuclear Energy Advisory Committee

Federal Register 2010, 2011, 2012, 2013, 2014

2013-11-27

... DEPARTMENT OF ENERGY Nuclear Energy Advisory Committee AGENCY: Office of Nuclear Energy, Department of Energy. ACTION: Notice of open meeting. SUMMARY: This notice announces a meeting of the Nuclear Energy Advisory Committee (NEAC). The Federal Advisory Committee Act (Public Law No. 94-463, 86 Stat. 770...

75 FR 22561 - Federal Advisory Committee; United States Strategic Command Strategic Advisory Group; Charter...

Federal Register 2010, 2011, 2012, 2013, 2014

2010-04-29

... Command Strategic Advisory Group; Charter Renewal AGENCY: Department of Defense (DoD). ACTION: Renewal of... Command Strategic Advisory Group (hereafter referred to as the Group). FOR FURTHER INFORMATION CONTACT... Chairman of the Joint Chiefs of Staff and the Commander of the U.S. Strategic Command independent advice...

Flight Test Evaluation of Synthetic Vision Concepts at a Terrain Challenged Airport

NASA Technical Reports Server (NTRS)

Kramer, Lynda J.; Prince, Lawrence J., III; Bailey, Randell E.; Arthur, Jarvis J., III; Parrish, Russell V.

2004-01-01

NASA's Synthetic Vision Systems (SVS) Project is striving to eliminate poor visibility as a causal factor in aircraft accidents as well as enhance operational capabilities of all aircraft through the display of computer generated imagery derived from an onboard database of terrain, obstacle, and airport information. To achieve these objectives, NASA 757 flight test research was conducted at the Eagle-Vail, Colorado airport to evaluate three SVS display types (Head-up Display, Head-Down Size A, Head-Down Size X) and two terrain texture methods (photo-realistic, generic) in comparison to the simulated Baseline Boeing-757 Electronic Attitude Direction Indicator and Navigation/Terrain Awareness and Warning System displays. The results of the experiment showed significantly improved situation awareness, performance, and workload for SVS concepts compared to the Baseline displays and confirmed the retrofit capability of the Head-Up Display and Size A SVS concepts. The research also demonstrated that the tunnel guidance display concept used within the SVS concepts achieved required navigation performance (RNP) criteria.

33 CFR 207.169 - Oklawaha River, navigation lock and dam at Moss Bluff, Fla.; use, administration, and navigation.

Code of Federal Regulations, 2010 CFR

2010-07-01

... 33 Navigation and Navigable Waters 3 2010-07-01 2010-07-01 false Oklawaha River, navigation lock and dam at Moss Bluff, Fla.; use, administration, and navigation. 207.169 Section 207.169 Navigation... REGULATIONS § 207.169 Oklawaha River, navigation lock and dam at Moss Bluff, Fla.; use, administration, and...

33 CFR 207.169 - Oklawaha River, navigation lock and dam at Moss Bluff, Fla.; use, administration, and navigation.

Code of Federal Regulations, 2011 CFR

2011-07-01

... 33 Navigation and Navigable Waters 3 2011-07-01 2011-07-01 false Oklawaha River, navigation lock and dam at Moss Bluff, Fla.; use, administration, and navigation. 207.169 Section 207.169 Navigation... REGULATIONS § 207.169 Oklawaha River, navigation lock and dam at Moss Bluff, Fla.; use, administration, and...

78 FR 45496 - Flathead Resource Advisory Committee

Federal Register 2010, 2011, 2012, 2013, 2014

2013-07-29

... DEPARTMENT OF AGRICULTURE Forest Service Flathead Resource Advisory Committee AGENCY: Forest Service, USDA. ACTION: Notice of meetings. SUMMARY: The Flathead Resource Advisory Committee will meet in.... September 24, 2013--4:00 p.m. to 6:30 p.m. All Resource Advisory Committee meetings are subject to change or...

36 CFR 219.25 - Science advisory boards.

Code of Federal Regulations, 2010 CFR

2010-07-01

... 36 Parks, Forests, and Public Property 2 2010-07-01 2010-07-01 false Science advisory boards. 219... PLANNING National Forest System Land and Resource Management Planning The Contribution of Science § 219.25 Science advisory boards. (a) National science advisory board. The Forest Service Deputy Chief for Research...

36 CFR 219.25 - Science advisory boards.

Code of Federal Regulations, 2011 CFR

2011-07-01

... 36 Parks, Forests, and Public Property 2 2011-07-01 2011-07-01 false Science advisory boards. 219... PLANNING National Forest System Land and Resource Management Planning The Contribution of Science § 219.25 Science advisory boards. (a) National science advisory board. The Forest Service Deputy Chief for Research...

Impact of patient navigation on timely cancer care: the Patient Navigation Research Program.

PubMed

Freund, Karen M; Battaglia, Tracy A; Calhoun, Elizabeth; Darnell, Julie S; Dudley, Donald J; Fiscella, Kevin; Hare, Martha L; LaVerda, Nancy; Lee, Ji-Hyun; Levine, Paul; Murray, David M; Patierno, Steven R; Raich, Peter C; Roetzheim, Richard G; Simon, Melissa; Snyder, Frederick R; Warren-Mears, Victoria; Whitley, Elizabeth M; Winters, Paul; Young, Gregory S; Paskett, Electra D

2014-06-01

Patient navigation is a promising intervention to address cancer disparities but requires a multisite controlled trial to assess its effectiveness. The Patient Navigation Research Program compared patient navigation with usual care on time to diagnosis or treatment for participants with breast, cervical, colorectal, or prostate screening abnormalities and/or cancers between 2007 and 2010. Patient navigators developed individualized strategies to address barriers to care, with the focus on preventing delays in care. To assess timeliness of diagnostic resolution, we conducted a meta-analysis of center- and cancer-specific adjusted hazard ratios (aHRs) comparing patient navigation vs usual care. To assess initiation of cancer therapy, we calculated a single aHR, pooling data across all centers and cancer types. We conducted a metaregression to evaluate variability across centers. All statistical tests were two-sided. The 10521 participants with abnormal screening tests and 2105 with a cancer or precancer diagnosis were predominantly from racial/ethnic minority groups (73%) and publically insured (40%) or uninsured (31%). There was no benefit during the first 90 days of care, but a benefit of navigation was seen from 91 to 365 days for both diagnostic resolution (aHR = 1.51; 95% confidence interval [CI] = 1.23 to 1.84; P < .001)) and treatment initiation (aHR = 1.43; 95% CI = 1.10 to 1.86; P < .007). Metaregression revealed that navigation had its greatest benefits within centers with the greatest delays in follow-up under usual care. Patient navigation demonstrated a moderate benefit in improving timely cancer care. These results support adoption of patient navigation in settings that serve populations at risk of being lost to follow-up. © The Author 2014. Published by Oxford University Press. All rights reserved. For Permissions, please e-mail: journals.permissions@oup.com.

78 FR 20685 - Aviation Security Advisory Committee (ASAC) Meeting

Federal Register 2010, 2011, 2012, 2013, 2014

2013-04-05

... DEPARTMENT OF HOMELAND SECURITY Transportation Security Administration Aviation Security Advisory...; Notice of Closed Federal Advisory Committee Meeting. SUMMARY: The Aviation Security Advisory Committee... Committee Act, 5 U.S.C. App. (Pub. L. 92-463). The Aviation Security Advisory Committee (ASAC) provides...

The real-world navigator

NASA Technical Reports Server (NTRS)

Balabanovic, Marko; Becker, Craig; Morse, Sarah K.; Nourbakhsh, Illah R.

1994-01-01

The success of every mobile robot application hinges on the ability to navigate robustly in the real world. The problem of robust navigation is separable from the challenges faced by any particular robot application. We offer the Real-World Navigator as a solution architecture that includes a path planner, a map-based localizer, and a motion control loop that combines reactive avoidance modules with deliberate goal-based motion. Our architecture achieves a high degree of reliability by maintaining and reasoning about an explicit description of positional uncertainty. We provide two implementations of real-world robot systems that incorporate the Real-World Navigator. The Vagabond Project culminated in a robot that successfully navigated a portion of the Stanford University campus. The Scimmer project developed successful entries for the AIAA 1993 Robotics Competition, placing first in one of the two contests entered.

76 FR 64122 - NASA Advisory Committee; Renewal of NASA's International Space Station Advisory Committee Charter

Federal Register 2010, 2011, 2012, 2013, 2014

2011-10-17

... NATIONAL AERONAUTICS AND SPACE ADMINISTRATION [Notice (11-095)] NASA Advisory Committee; Renewal of NASA's International Space Station Advisory Committee Charter AGENCY: National Aeronautics and Space Administration (NASA). ACTION: Notice of renewal and amendment of the Charter of the International...

National and Governmental Advisory Committees: Meetings

EPA Pesticide Factsheets

Meetings and Teleconference Information for the National Advisory Committee and Governmental Advisory Committee to the United States Representative to the North American Commission for Environmental Cooperation,

Electromagnetic tracking of flexible robotic catheters enables "assisted navigation" and brings automation to endovascular navigation in an in vitro study.

PubMed

Schwein, Adeline; Kramer, Benjamin; Chinnadurai, Ponraj; Virmani, Neha; Walker, Sean; O'Malley, Marcia; Lumsden, Alan B; Bismuth, Jean

2018-04-01

, mean cannulation time was also significantly reduced when using EM tracking (P < .001). The use of novel EM assisted navigation feature (mode 3) showed further reduced cannulation time for the posterior gate (P = .002) and improved quality of catheter movement for the left renal artery cannulation (P = .021). These results confirmed the findings of a prior study that highlighted the value of combining 3D robotic catheter control and 3D navigation to improve safety and efficiency of endovascular procedures. The novel EM assisted navigation feature augments the robotic master/slave concept with automated catheter orientation toward the target and shows promising results in reducing procedure time and improving catheter motion quality. Copyright © 2017 Society for Vascular Surgery. Published by Elsevier Inc. All rights reserved.

16 CFR 1018.14 - Non-Commission established advisory committees.

Code of Federal Regulations, 2010 CFR

2010-01-01

... 16 Commercial Practices 2 2010-01-01 2010-01-01 false Non-Commission established advisory committees. 1018.14 Section 1018.14 Commercial Practices CONSUMER PRODUCT SAFETY COMMISSION GENERAL ADVISORY COMMITTEE MANAGEMENT Establishment of Advisory Committees § 1018.14 Non-Commission established advisory...

Augmented Reality Based Navigation for Computer Assisted Hip Resurfacing: A Proof of Concept Study.

PubMed

Liu, He; Auvinet, Edouard; Giles, Joshua; Rodriguez Y Baena, Ferdinando

2018-05-23

Implantation accuracy has a great impact on the outcomes of hip resurfacing such as recovery of hip function. Computer assisted orthopedic surgery has demonstrated clear advantages for the patients, with improved placement accuracy and fewer outliers, but the intrusiveness, cost, and added complexity have limited its widespread adoption. To provide seamless computer assistance with improved immersion and a more natural surgical workflow, we propose an augmented-reality (AR) based navigation system for hip resurfacing. The operative femur is registered by processing depth information from the surgical site with a commercial depth camera. By coupling depth data with robotic assistance, obstacles that may obstruct the femur can be tracked and avoided automatically to reduce the chance of disruption to the surgical workflow. Using the registration result and the pre-operative plan, intra-operative surgical guidance is provided through a commercial AR headset so that the user can perform the operation without additional physical guides. To assess the accuracy of the navigation system, experiments of guide hole drilling were performed on femur phantoms. The position and orientation of the drilled holes were compared with the pre-operative plan, and the mean errors were found to be approximately 2 mm and 2°, results which are in line with commercial computer assisted orthopedic systems today.

21 CFR 20.118 - Advisory committee records.

Code of Federal Regulations, 2010 CFR

2010-04-01

... 21 Food and Drugs 1 2010-04-01 2010-04-01 false Advisory committee records. 20.118 Section 20.118 Food and Drugs FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES GENERAL PUBLIC INFORMATION Availability of Specific Categories of Records § 20.118 Advisory committee records. All advisory...

Computer-assisted surgery: virtual- and augmented-reality displays for navigation during urological interventions.

PubMed

van Oosterom, Matthias N; van der Poel, Henk G; Navab, Nassir; van de Velde, Cornelis J H; van Leeuwen, Fijs W B

2018-03-01

To provide an overview of the developments made for virtual- and augmented-reality navigation procedures in urological interventions/surgery. Navigation efforts have demonstrated potential in the field of urology by supporting guidance for various disorders. The navigation approaches differ between the individual indications, but seem interchangeable to a certain extent. An increasing number of pre- and intra-operative imaging modalities has been used to create detailed surgical roadmaps, namely: (cone-beam) computed tomography, MRI, ultrasound, and single-photon emission computed tomography. Registration of these surgical roadmaps with the real-life surgical view has occurred in different forms (e.g. electromagnetic, mechanical, vision, or near-infrared optical-based), whereby the combination of approaches was suggested to provide superior outcome. Soft-tissue deformations demand the use of confirmatory interventional (imaging) modalities. This has resulted in the introduction of new intraoperative modalities such as drop-in US, transurethral US, (drop-in) gamma probes and fluorescence cameras. These noninvasive modalities provide an alternative to invasive technologies that expose the patients to X-ray doses. Whereas some reports have indicated navigation setups provide equal or better results than conventional approaches, most trials have been performed in relatively small patient groups and clear follow-up data are missing. The reported computer-assisted surgery research concepts provide a glimpse in to the future application of navigation technologies in the field of urology.

36 CFR 219.18 - Role of advisory committees.

Code of Federal Regulations, 2011 CFR

2011-07-01

... PLANNING National Forest System Land and Resource Management Planning Collaborative Planning for Sustainability § 219.18 Role of advisory committees. (a) Advisory committees. Advisory committees can provide an...)). Ecological, Social, and Economic Sustainability ...

Racial and Ethnic Differences in Patient Navigation: Results from the Patient Navigation Research Program

PubMed Central

Ko, Naomi Y; Snyder, Frederick R; Raich, Peter C; Paskett, Electra D.; Dudley, Donald; Lee, Ji-Hyun; Levine, Paul H.; Freund, Karen M

2016-01-01

Purpose Patient navigation was developed to address barriers to timely care and reduce cancer disparities. This study explores navigation and racial and ethnic differences in time to diagnostic resolution of a cancer screening abnormality. Patients and Methods We conducted an analysis of the multi-site Patient Navigation Research Program. Participants with an abnormal cancer screening test were allocated to either navigation or control. Unadjusted median time to resolution was calculated for each racial and ethnic group by navigation and control. Multivariable Cox proportional hazards models were fit, adjusting for sex, age, cancer abnormality type, and health insurance, stratifying by center of care. Results Among a sample of 7,514 participants, 29% were Non-Hispanic White, 43% Hispanic, and 28% Black. In the control group Blacks had a longer median time to diagnostic resolution (108 days) than Non-Hispanic Whites (65 days) or Hispanics (68 days) (p< .0001). In the navigated groups, Blacks had a reduction in median time to diagnostic resolution (97 days) (p <.0001). In the multivariable models, among controls, Black race was associated with increased delay to diagnostic resolution (HR=0.77; 95% CI: 0.69, 0.84) compared to the Non-Hispanic Whites, which was reduced in the navigated arm (HR=0.85; 95% CI: 0.77, 0.94). Conclusion Patient navigation had its greatest impact for Black patients who had the greatest delays in care. PMID:27227342

Linchpins or Lost Time: Creating Effective Advisories

ERIC Educational Resources Information Center

Johnson, Bil

2009-01-01

That advisories in secondary schools are fairly pervasive around the country may be one of the great unintended consequences of the Coalition of Essential Schools (CES) reform effort. While no CES Common Principle explicitly states that advisories should exist in schools, as Coalition Schools evolved, advisories became one of the logical ways for…

Modification to area navigation equipment for instrument two-segment approaches

NASA Technical Reports Server (NTRS)

1975-01-01

A two-segment aircraft landing approach concept utilizing an area random navigation (RNAV) system to execute the two-segment approach and eliminate the requirements for co-located distance measuring equipment (DME) was investigated. This concept permits non-precision approaches to be made to runways not equipped with ILS systems, down to appropriate minima. A hardware and software retrofit kit for the concept was designed, built, and tested on a DC-8-61 aircraft for flight evaluation. A two-segment approach profile and piloting procedure for that aircraft that will provide adequate safety margin under adverse weather, in the presence of system failures, and with the occurrence of an abused approach, was also developed. The two-segment approach procedure and equipment was demonstrated to line pilots under conditions which are representative of those encountered in air carrier service.

Texas ports and navigation districts : overview.

DOT National Transportation Integrated Search

2017-01-01

The first Navigation District was established in 1909, and there are now 24 Navigation Districts statewide.1 Navigation districts generally provide for the construction and improvement of waterways in Texas for the purpose of navigation. The creation...

75 FR 18470 - Olympic National Forest; Federal Register-Title II Resource Advisory Committee Meeting Advisory

Federal Register 2010, 2011, 2012, 2013, 2014

2010-04-12

... DEPARTMENT OF AGRICULTURE Forest Service Olympic National Forest; Federal Register--Title II Resource Advisory Committee Meeting Advisory AGENCY: Olympic National Forest, USDA Forest Service. ACTION... recommendations for Title II projects to be funded by the Secure Rural Schools and Community Self- Determination...

The California Earthquake Advisory Plan: A history

USGS Publications Warehouse

Roeloffs, Evelyn A.; Goltz, James D.

2017-01-01

Since 1985, the California Office of Emergency Services (Cal OES) has issued advisory statements to local jurisdictions and the public following seismic activity that scientists on the California Earthquake Prediction Evaluation Council view as indicating elevated probability of a larger earthquake in the same area during the next several days. These advisory statements are motivated by statistical studies showing that about 5% of moderate earthquakes in California are followed by larger events within a 10-km, five-day space-time window (Jones, 1985; Agnew and Jones, 1991; Reasenberg and Jones, 1994). Cal OES issued four earthquake advisories from 1985 to 1989. In October, 1990, the California Earthquake Advisory Plan formalized this practice, and six Cal OES Advisories have been issued since then. This article describes that protocol’s scientific basis and evolution.

A Guide for Planning, Organizing, and Utilizing Advisory Councils.

ERIC Educational Resources Information Center

Illinois State Office of Education, Springfield. Div. of Vocational and Technical Education.

Designed for administrators and teachers at the community college/secondary/elementary levels, the guide is a reference source for establishing and developing citizen advisory councils. A section on Advisory Councils--Planning discusses the need for citizen advisory councils, definition and purpose, advisory council types, and operational…

Shuttle unified navigation filter, revision 1

NASA Technical Reports Server (NTRS)

Muller, E. S., Jr.

1973-01-01

Equations designed to meet the navigation requirements of the separate shuttle mission phases are presented in a series of reports entitled, Space Shuttle GN and C Equation Document. The development of these equations is based on performance studies carried out for each particular mission phase. Although navigation equations have been documented separately for each mission phase, a single unified navigation filter design is embodied in these separate designs. The purpose of this document is to present the shuttle navigation equations in a form in which they would most likely be coded-as the single unified navigation filter used in each mission phase. This document will then serve as a single general reference for the navigation equations replacing each of the individual mission phase navigation documents (which may still be used as a description of a particular navigation phase).

75 FR 48320 - Unconventional Resources Technology Advisory Committee

Federal Register 2010, 2011, 2012, 2013, 2014

2010-08-10

... DEPARTMENT OF ENERGY Unconventional Resources Technology Advisory Committee AGENCY: Department of... of the Unconventional Resources Technology Advisory Committee. The Federal Advisory Committee Act.... SUPPLEMENTARY INFORMATION: Purpose of the Committee: The purpose of the Unconventional Resources Technology...

77 FR 53191 - Unconventional Resources Technology Advisory Committee

Federal Register 2010, 2011, 2012, 2013, 2014

2012-08-31

... DEPARTMENT OF ENERGY Unconventional Resources Technology Advisory Committee AGENCY: Department of... of the Unconventional Resources Technology Advisory Committee. The Federal Advisory Committee Act.... SUPPLEMENTARY INFORMATION: Purpose of the Committee: The purpose of the Unconventional Resources Technology...

42 CFR 90.9 - Public health advisory.

Code of Federal Regulations, 2010 CFR

2010-10-01

... 42 Public Health 1 2010-10-01 2010-10-01 false Public health advisory. 90.9 Section 90.9 Public Health PUBLIC HEALTH SERVICE, DEPARTMENT OF HEALTH AND HUMAN SERVICES HEALTH ASSESSMENTS AND HEALTH... PROCEDURES § 90.9 Public health advisory. ATSDR may issue a public health advisory based on the findings of a...

42 CFR 90.9 - Public health advisory.

Code of Federal Regulations, 2013 CFR

2013-10-01

... 42 Public Health 1 2013-10-01 2013-10-01 false Public health advisory. 90.9 Section 90.9 Public Health PUBLIC HEALTH SERVICE, DEPARTMENT OF HEALTH AND HUMAN SERVICES HEALTH ASSESSMENTS AND HEALTH... PROCEDURES § 90.9 Public health advisory. ATSDR may issue a public health advisory based on the findings of a...

42 CFR 90.9 - Public health advisory.

Code of Federal Regulations, 2011 CFR

2011-10-01

... 42 Public Health 1 2011-10-01 2011-10-01 false Public health advisory. 90.9 Section 90.9 Public Health PUBLIC HEALTH SERVICE, DEPARTMENT OF HEALTH AND HUMAN SERVICES HEALTH ASSESSMENTS AND HEALTH... PROCEDURES § 90.9 Public health advisory. ATSDR may issue a public health advisory based on the findings of a...

42 CFR 90.9 - Public health advisory.

Code of Federal Regulations, 2012 CFR

2012-10-01

... 42 Public Health 1 2012-10-01 2012-10-01 false Public health advisory. 90.9 Section 90.9 Public Health PUBLIC HEALTH SERVICE, DEPARTMENT OF HEALTH AND HUMAN SERVICES HEALTH ASSESSMENTS AND HEALTH... PROCEDURES § 90.9 Public health advisory. ATSDR may issue a public health advisory based on the findings of a...

42 CFR 90.9 - Public health advisory.

Code of Federal Regulations, 2014 CFR

2014-10-01

... 42 Public Health 1 2014-10-01 2014-10-01 false Public health advisory. 90.9 Section 90.9 Public Health PUBLIC HEALTH SERVICE, DEPARTMENT OF HEALTH AND HUMAN SERVICES HEALTH ASSESSMENTS AND HEALTH... PROCEDURES § 90.9 Public health advisory. ATSDR may issue a public health advisory based on the findings of a...

Lunar Navigation Architecture Design Considerations

NASA Technical Reports Server (NTRS)

D'Souza, Christopher; Getchius, Joel; Holt, Greg; Moreau, Michael

2009-01-01

The NASA Constellation Program is aiming to establish a long-term presence on the lunar surface. The Constellation elements (Orion, Altair, Earth Departure Stage, and Ares launch vehicles) will require a lunar navigation architecture for navigation state updates during lunar-class missions. Orion in particular has baselined earth-based ground direct tracking as the primary source for much of its absolute navigation needs. However, due to the uncertainty in the lunar navigation architecture, the Orion program has had to make certain assumptions on the capabilities of such architectures in order to adequately scale the vehicle design trade space. The following paper outlines lunar navigation requirements, the Orion program assumptions, and the impacts of these assumptions to the lunar navigation architecture design. The selection of potential sites was based upon geometric baselines, logistical feasibility, redundancy, and abort support capability. Simulated navigation covariances mapped to entry interface flightpath- angle uncertainties were used to evaluate knowledge errors. A minimum ground station architecture was identified consisting of Goldstone, Madrid, Canberra, Santiago, Hartebeeshoek, Dongora, Hawaii, Guam, and Ascension Island (or the geometric equivalent).

32 CFR 1698.2 - Requests for advisory opinions.

Code of Federal Regulations, 2010 CFR

2010-07-01

... ADVISORY OPINIONS § 1698.2 Requests for advisory opinions. (a) Any male born after December 31, 1959 who... advisory opinion as to the liability of any male person born after December 31, 1959 who has attained 18...

32 CFR 1698.2 - Requests for advisory opinions.

Code of Federal Regulations, 2011 CFR

2011-07-01

... ADVISORY OPINIONS § 1698.2 Requests for advisory opinions. (a) Any male born after December 31, 1959 who... advisory opinion as to the liability of any male person born after December 31, 1959 who has attained 18...

78 FR 1265 - Aerospace Safety Advisory Panel; Meeting

Federal Register 2010, 2011, 2012, 2013, 2014

2013-01-08

... NATIONAL AERONAUTICS AND SPACE ADMINISTRATION [Notice 13-001] Aerospace Safety Advisory Panel... Aeronautics and Space Administration announces a forthcoming meeting of the Aerospace Safety Advisory Panel..., Aerospace Safety Advisory Panel Executive Director, National Aeronautics and Space Administration...

76 FR 62455 - Aerospace Safety Advisory Panel; Meeting

Federal Register 2010, 2011, 2012, 2013, 2014

2011-10-07

... NATIONAL AERONAUTICS AND SPACE ADMINISTRATION [Notice (11-088)] Aerospace Safety Advisory Panel... Aeronautics and Space Administration announces a forthcoming meeting of the Aerospace Safety Advisory Panel... Burch, Aerospace Safety Advisory Panel Administrative Officer, National Aeronautics and Space...

77 FR 10485 - Unconventional Resources Technology Advisory Committee

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2012-02-22

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76 FR 64923 - Unconventional Resources Technology Advisory Committee

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2011-10-19

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10 CFR 7.17 - Reports required for advisory committees.

Code of Federal Regulations, 2013 CFR

2013-01-01

... 10 Energy 1 2013-01-01 2013-01-01 false Reports required for advisory committees. 7.17 Section 7.17 Energy NUCLEAR REGULATORY COMMISSION ADVISORY COMMITTEES § 7.17 Reports required for advisory committees. (a) The Commission shall furnish a report on the activities of NRC advisory committees annually...

10 CFR 7.17 - Reports required for advisory committees.

Code of Federal Regulations, 2014 CFR

2014-01-01

... 10 Energy 1 2014-01-01 2014-01-01 false Reports required for advisory committees. 7.17 Section 7.17 Energy NUCLEAR REGULATORY COMMISSION ADVISORY COMMITTEES § 7.17 Reports required for advisory committees. (a) The Commission shall furnish a report on the activities of NRC advisory committees annually...

10 CFR 7.17 - Reports required for advisory committees.

Code of Federal Regulations, 2012 CFR

2012-01-01

... 10 Energy 1 2012-01-01 2012-01-01 false Reports required for advisory committees. 7.17 Section 7.17 Energy NUCLEAR REGULATORY COMMISSION ADVISORY COMMITTEES § 7.17 Reports required for advisory committees. (a) The Commission shall furnish a report on the activities of NRC advisory committees annually...

10 CFR 7.17 - Reports required for advisory committees.

Code of Federal Regulations, 2010 CFR

2010-01-01

... 10 Energy 1 2010-01-01 2010-01-01 false Reports required for advisory committees. 7.17 Section 7.17 Energy NUCLEAR REGULATORY COMMISSION ADVISORY COMMITTEES § 7.17 Reports required for advisory committees. (a) The Commission shall furnish a report on the activities of NRC advisory committees annually...

10 CFR 7.17 - Reports required for advisory committees.

Code of Federal Regulations, 2011 CFR

2011-01-01

... 10 Energy 1 2011-01-01 2011-01-01 false Reports required for advisory committees. 7.17 Section 7.17 Energy NUCLEAR REGULATORY COMMISSION ADVISORY COMMITTEES § 7.17 Reports required for advisory committees. (a) The Commission shall furnish a report on the activities of NRC advisory committees annually...

Autonomous Wheeled Robot Platform Testbed for Navigation and Mapping Using Low-Cost Sensors

NASA Astrophysics Data System (ADS)

Calero, D.; Fernandez, E.; Parés, M. E.

2017-11-01

This paper presents the concept of an architecture for a wheeled robot system that helps researchers in the field of geomatics to speed up their daily research on kinematic geodesy, indoor navigation and indoor positioning fields. The presented ideas corresponds to an extensible and modular hardware and software system aimed at the development of new low-cost mapping algorithms as well as at the evaluation of the performance of sensors. The concept, already implemented in the CTTC's system ARAS (Autonomous Rover for Automatic Surveying) is generic and extensible. This means that it is possible to incorporate new navigation algorithms or sensors at no maintenance cost. Only the effort related to the development tasks required to either create such algorithms needs to be taken into account. As a consequence, change poses a much small problem for research activities in this specific area. This system includes several standalone sensors that may be combined in different ways to accomplish several goals; that is, this system may be used to perform a variety of tasks, as, for instance evaluates positioning algorithms performance or mapping algorithms performance.

Non-Alumni Advisory Board Volunteers

ERIC Educational Resources Information Center

Nagai, Judy; Nehls, Kimberly

2014-01-01

Advisory boards typically offer guidance, support, social, and financial capital to academic units within colleges and universities. They are generally comprised of prominent volunteers from the community and appropriate industries or businesses. The results of this exploratory study found that non-alumni advisory board volunteers developed…

75 FR 52732 - Renewal of Department of Defense Federal Advisory Committee; Missile Defense Advisory Committee

Federal Register 2010, 2011, 2012, 2013, 2014

2010-08-27

... DEPARTMENT OF DEFENSE Office of the Secretary Renewal of Department of Defense Federal Advisory Committee; Missile Defense Advisory Committee AGENCY: Department of Defense (DoD). ACTION: Renewal of..., the Department of Defense gives notice that it is renewing the charter for the Missile Defense...

75 FR 61219 - Aerospace Safety Advisory Panel; Meeting

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2010-10-04

... NATIONAL AERONAUTICS AND SPACE ADMINISTRATION [Notice (10-116)] Aerospace Safety Advisory Panel... Aeronautics and Space Administration announces a forthcoming meeting of the Aerospace Safety Advisory Panel... Dakon, Aerospace Safety Advisory Panel Executive Director, National Aeronautics and Space Administration...

76 FR 19147 - Aerospace Safety Advisory Panel; Meeting.

Federal Register 2010, 2011, 2012, 2013, 2014

2011-04-06

... NATIONAL AERONAUTICS AND SPACE ADMINISTRATION [Notice (11-030)] Aerospace Safety Advisory Panel... Aeronautics and Space Administration announce a forthcoming meeting of the Aerospace Safety Advisory Panel.... Kathy Dakon, Aerospace Safety Advisory Panel Executive Director, National Aeronautics and Space...

78 FR 56941 - Aerospace Safety Advisory Panel; Meeting

Federal Register 2010, 2011, 2012, 2013, 2014

2013-09-16

... NATIONAL AERONAUTICS AND SPACE ADMINISTRATION [Notice: 13-114] Aerospace Safety Advisory Panel... Aeronautics and Space Administration announces a forthcoming meeting of the Aerospace Safety Advisory Panel.... Harmony Myers, Aerospace Safety Advisory Panel Executive Director, National Aeronautics and Space...

77 FR 58413 - Aerospace Safety Advisory Panel; Meeting

Federal Register 2010, 2011, 2012, 2013, 2014

2012-09-20

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77 FR 38090 - Aerospace Safety Advisory Panel; Meeting.

Federal Register 2010, 2011, 2012, 2013, 2014

2012-06-26

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10 CFR 7.13 - Minutes of advisory committee meetings.

Code of Federal Regulations, 2012 CFR

2012-01-01

... 10 Energy 1 2012-01-01 2012-01-01 false Minutes of advisory committee meetings. 7.13 Section 7.13 Energy NUCLEAR REGULATORY COMMISSION ADVISORY COMMITTEES § 7.13 Minutes of advisory committee meetings. (a) Detailed minutes shall be kept of each NRC advisory committee meeting. The minutes shall include...

10 CFR 7.6 - Amendment to advisory committee charters.

Code of Federal Regulations, 2013 CFR

2013-01-01

... 10 Energy 1 2013-01-01 2013-01-01 false Amendment to advisory committee charters. 7.6 Section 7.6 Energy NUCLEAR REGULATORY COMMISSION ADVISORY COMMITTEES § 7.6 Amendment to advisory committee charters. (a) Final authority for amending the charter of an NRC advisory committee established or utilized by...

10 CFR 7.6 - Amendment to advisory committee charters.

Code of Federal Regulations, 2012 CFR

2012-01-01

... 10 Energy 1 2012-01-01 2012-01-01 false Amendment to advisory committee charters. 7.6 Section 7.6 Energy NUCLEAR REGULATORY COMMISSION ADVISORY COMMITTEES § 7.6 Amendment to advisory committee charters. (a) Final authority for amending the charter of an NRC advisory committee established or utilized by...

10 CFR 7.19 - Advisory committee members with disabilities.

Code of Federal Regulations, 2014 CFR

2014-01-01

... 10 Energy 1 2014-01-01 2014-01-01 false Advisory committee members with disabilities. 7.19 Section 7.19 Energy NUCLEAR REGULATORY COMMISSION ADVISORY COMMITTEES § 7.19 Advisory committee members with disabilities. An NRC advisory committee member who is disabled may be provided services by a personal assistant...

10 CFR 7.6 - Amendment to advisory committee charters.

Code of Federal Regulations, 2014 CFR

2014-01-01

... 10 Energy 1 2014-01-01 2014-01-01 false Amendment to advisory committee charters. 7.6 Section 7.6 Energy NUCLEAR REGULATORY COMMISSION ADVISORY COMMITTEES § 7.6 Amendment to advisory committee charters. (a) Final authority for amending the charter of an NRC advisory committee established or utilized by...

10 CFR 7.13 - Minutes of advisory committee meetings.

Code of Federal Regulations, 2013 CFR

2013-01-01

... 10 Energy 1 2013-01-01 2013-01-01 false Minutes of advisory committee meetings. 7.13 Section 7.13 Energy NUCLEAR REGULATORY COMMISSION ADVISORY COMMITTEES § 7.13 Minutes of advisory committee meetings. (a) Detailed minutes shall be kept of each NRC advisory committee meeting. The minutes shall include...

10 CFR 7.13 - Minutes of advisory committee meetings.

Code of Federal Regulations, 2014 CFR

2014-01-01

... 10 Energy 1 2014-01-01 2014-01-01 false Minutes of advisory committee meetings. 7.13 Section 7.13 Energy NUCLEAR REGULATORY COMMISSION ADVISORY COMMITTEES § 7.13 Minutes of advisory committee meetings. (a) Detailed minutes shall be kept of each NRC advisory committee meeting. The minutes shall include...

10 CFR 7.19 - Advisory committee members with disabilities.

Code of Federal Regulations, 2013 CFR

2013-01-01

... 10 Energy 1 2013-01-01 2013-01-01 false Advisory committee members with disabilities. 7.19 Section 7.19 Energy NUCLEAR REGULATORY COMMISSION ADVISORY COMMITTEES § 7.19 Advisory committee members with disabilities. An NRC advisory committee member who is disabled may be provided services by a personal assistant...

10 CFR 7.19 - Advisory committee members with disabilities.

Code of Federal Regulations, 2012 CFR

2012-01-01

... 10 Energy 1 2012-01-01 2012-01-01 false Advisory committee members with disabilities. 7.19 Section 7.19 Energy NUCLEAR REGULATORY COMMISSION ADVISORY COMMITTEES § 7.19 Advisory committee members with disabilities. An NRC advisory committee member who is disabled may be provided services by a personal assistant...

10 CFR 7.13 - Minutes of advisory committee meetings.

Code of Federal Regulations, 2010 CFR

2010-01-01

... 10 Energy 1 2010-01-01 2010-01-01 false Minutes of advisory committee meetings. 7.13 Section 7.13 Energy NUCLEAR REGULATORY COMMISSION ADVISORY COMMITTEES § 7.13 Minutes of advisory committee meetings. (a) Detailed minutes shall be kept of each NRC advisory committee meeting. The minutes shall include...

10 CFR 7.6 - Amendment to advisory committee charters.

Code of Federal Regulations, 2010 CFR

2010-01-01

... 10 Energy 1 2010-01-01 2010-01-01 false Amendment to advisory committee charters. 7.6 Section 7.6 Energy NUCLEAR REGULATORY COMMISSION ADVISORY COMMITTEES § 7.6 Amendment to advisory committee charters. (a) Final authority for amending the charter of an NRC advisory committee established or utilized by...

10 CFR 7.19 - Advisory committee members with disabilities.

Code of Federal Regulations, 2010 CFR

2010-01-01

... 10 Energy 1 2010-01-01 2010-01-01 false Advisory committee members with disabilities. 7.19 Section 7.19 Energy NUCLEAR REGULATORY COMMISSION ADVISORY COMMITTEES § 7.19 Advisory committee members with disabilities. An NRC advisory committee member who is disabled may be provided services by a personal assistant...

10 CFR 7.6 - Amendment to advisory committee charters.

Code of Federal Regulations, 2011 CFR

2011-01-01

... 10 Energy 1 2011-01-01 2011-01-01 false Amendment to advisory committee charters. 7.6 Section 7.6 Energy NUCLEAR REGULATORY COMMISSION ADVISORY COMMITTEES § 7.6 Amendment to advisory committee charters. (a) Final authority for amending the charter of an NRC advisory committee established or utilized by...

10 CFR 7.19 - Advisory committee members with disabilities.

Code of Federal Regulations, 2011 CFR

2011-01-01

... 10 Energy 1 2011-01-01 2011-01-01 false Advisory committee members with disabilities. 7.19 Section 7.19 Energy NUCLEAR REGULATORY COMMISSION ADVISORY COMMITTEES § 7.19 Advisory committee members with disabilities. An NRC advisory committee member who is disabled may be provided services by a personal assistant...

10 CFR 7.13 - Minutes of advisory committee meetings.

Code of Federal Regulations, 2011 CFR

2011-01-01

... 10 Energy 1 2011-01-01 2011-01-01 false Minutes of advisory committee meetings. 7.13 Section 7.13 Energy NUCLEAR REGULATORY COMMISSION ADVISORY COMMITTEES § 7.13 Minutes of advisory committee meetings. (a) Detailed minutes shall be kept of each NRC advisory committee meeting. The minutes shall include...

Guidance and navigation for automatic landing, rollout, and turnoff using MLS and magnetic cable sensors

NASA Technical Reports Server (NTRS)

Pines, S.; Hueschen, R. M.

1978-01-01

This paper describes the navigation and guidance system developed for the TCV B-737, a Langley Field NASA research aircraft, and presents the results of an evaluation during final approach, landing, rollout and turnoff obtained through a nonlinear digital simulation. A Kalman filter (implemented in square root form) and a third order complementary filter were developed and compared for navigation. The Microwave Landing Systems (MLS) is used for all phases of the flight for navigation and guidance. In addition, for rollout and turnoff, a three coil sensor which detects the magnetic field induced by a buried wire in the runway (magnetic leader cable) is used. The outputs of the sensor are processed into measurements of position and heading deviation from the wire. The results show the concept to be both feasible and practical for commercial type aircraft terminal area control.

Computer-assisted hip and knee arthroplasty. Navigation and active robotic systems: an evidence-based analysis.

PubMed

2004-01-01

The Medical Advisory Secretariat undertook a review of the evidence on the effectiveness and cost-effectiveness of computer assisted hip and knee arthroplasty. The two computer assisted arthroplasty systems that are the topics of this review are (1) navigation and (2) robotic-assisted hip and knee arthroplasty. Computer-assisted arthroplasty consists of navigation and robotic systems. Surgical navigation is a visualization system that provides positional information about surgical tools or implants relative to a target bone on a computer display. Most of the navigation-assisted arthroplasty devices that are the subject of this review are licensed by Health Canada. Robotic systems are active robots that mill bone according to information from a computer-assisted navigation system. The robotic-assisted arthroplasty devices that are the subject of this review are not currently licensed by Health Canada. The Cochrane and International Network of Agencies for Health Technology Assessment databases did not identify any health technology assessments on navigation or robotic-assisted hip or knee arthroplasty. The MEDLINE and EMBASE databases were searched for articles published between January 1, 1996 and November 30, 2003. This search produced 367 studies, of which 9 met the inclusion criteria. NAVIGATION-ASSISTED ARTHROPLASTY: Five studies were identified that examined navigation-assisted arthroplasty.A Level 1 evidence study from Germany found a statistically significant difference in alignment and angular deviation between navigation-assisted and free-hand total knee arthroplasty in favour of navigation-assisted surgery. However, the endpoints in this study were short-term. To date, the long-term effects (need for revision, implant longevity, pain, functional performance) are unknown.(1)A Level 2 evidence short-term study found that navigation-assisted total knee arthroplasty was significantly better than a non-navigated procedure for one of five postoperative measured

78 FR 3498 - Debt Management Advisory Committee Meeting

Federal Register 2010, 2011, 2012, 2013, 2014

2013-01-16

... DEPARTMENT OF THE TREASURY Departmental Offices Debt Management Advisory Committee Meeting Notice.... of the following debt management advisory committee: Treasury Borrowing Advisory Committee of The... decisions on major financing operations. Historically, this advice has been offered by debt management...

75 FR 16438 - U.S. Travel and Tourism Advisory Board: Meeting of the U.S. Travel and Tourism Advisory Board

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2010-04-01

... DEPARTMENT OF COMMERCE International Trade Administration U.S. Travel and Tourism Advisory Board: Meeting of the U.S. Travel and Tourism Advisory Board AGENCY: International Trade Administration, U.S... Tourism Advisory Board (Board) will hold a meeting to discuss topics related to the travel and tourism...

75 FR 14135 - U.S. Travel And Tourism Advisory Board: Meeting of the U.S. Travel and Tourism Advisory Board

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2010-03-24

... DEPARTMENT OF COMMERCE International Trade Administration U.S. Travel And Tourism Advisory Board: Meeting of the U.S. Travel and Tourism Advisory Board AGENCY: International Trade Administration, U.S. Department of Commerce. ACTION: Notice of an open meeting. SUMMARY: The U.S. Travel and Tourism Advisory...

75 FR 39496 - U.S. Travel and Tourism Advisory Board: Meeting of the U.S. Travel and Tourism Advisory Board

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2010-07-09

... DEPARTMENT OF COMMERCE International Trade Administration U.S. Travel and Tourism Advisory Board: Meeting of the U.S. Travel and Tourism Advisory Board AGENCY: International Trade Administration, U.S. Department of Commerce. ACTION: Notice of an open meeting. SUMMARY: The U.S. Travel and Tourism Advisory...

77 FR 56242 - Dodd-Frank Investor Advisory Committee

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2012-09-12

... Investor Advisory Committee AGENCY: Securities and Exchange Commission. ACTION: Notice of Meeting of Securities and Exchange Commission Dodd- Frank Investor Advisory Committee. SUMMARY: The Securities and Exchange Commission Investor Advisory Committee, established pursuant to Section 911 of the Dodd-Frank Wall...

77 FR 11084 - Army Education Advisory Committee Meeting

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2012-02-24

... DEPARTMENT OF DEFENSE Department of the Army Army Education Advisory Committee Meeting AGENCY... the Army announces the following committee meeting: Name of Committee: Army Education Advisory... , (757) 501-5810, or to the following address: Army Education Advisory Committee, Designated Federal...

77 FR 50089 - Army Education Advisory Committee Meeting

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2012-08-20

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75 FR 9887 - Advanced Scientific Computing Advisory Committee

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2010-03-04

... DEPARTMENT OF ENERGY Advanced Scientific Computing Advisory Committee AGENCY: Department of Energy... Advanced Scientific Computing Advisory Committee (ASCAC). Federal Advisory Committee Act (Pub. L. 92-463... INFORMATION CONTACT: Melea Baker, Office of Advanced Scientific Computing Research; SC-21/Germantown Building...

76 FR 9765 - Advanced Scientific Computing Advisory Committee

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2011-02-22

... DEPARTMENT OF ENERGY Advanced Scientific Computing Advisory Committee AGENCY: Office of Science... Advanced Scientific Computing Advisory Committee (ASCAC). The Federal Advisory Committee Act (Pub. L. 92... INFORMATION CONTACT: Melea Baker, Office of Advanced Scientific Computing Research, SC-21/Germantown Building...

76 FR 41559 - Debt Management Advisory Committee Meeting

Federal Register 2010, 2011, 2012, 2013, 2014