Science.gov

Sample records for advisory navigation concept

  1. 76 FR 21772 - Navigation Safety Advisory Council

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-04-18

    ... Register (73 FR 3316). Docket: For access to the docket to read documents or comments related to this... SECURITY Coast Guard Navigation Safety Advisory Council AGENCY: Coast Guard, DHS. ACTION: Notice of Federal Advisory Committee Meeting. SUMMARY: The Navigation Safety Advisory Council (NAVSAC) will meet on May...

  2. 78 FR 19277 - Navigation Safety Advisory Council; Meeting

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-03-29

    ... SECURITY United States Coast Guard Navigation Safety Advisory Council; Meeting AGENCY: United States Coast Guard, DHS. ACTION: Notice of Federal Advisory Committee meeting: correction. SUMMARY: The Navigation...; navigation regulations and equipment; routing measures; marine information; diving safety; and aids...

  3. 75 FR 51473 - Houston/Galveston Navigation Safety Advisory Committee

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-08-20

    ... SECURITY Coast Guard Houston/Galveston Navigation Safety Advisory Committee AGENCY: Coast Guard, DHS. ACTION: Notice of meetings. SUMMARY: The Houston/Galveston Navigation Safety Advisory Committee (HOGANSAC... navigation, area projects impacting safety on the Houston Ship Channel, and various other navigation...

  4. 76 FR 33773 - Navigation Safety Advisory Council; Vacancies

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-06-09

    ... SECURITY Coast Guard Navigation Safety Advisory Council; Vacancies AGENCY: Coast Guard, DHS. ACTION: Request for applications. SUMMARY: The Coast Guard seeks applications for membership on the Navigation... the Road, navigation regulations and equipment, routing measures, marine information, diving...

  5. 75 FR 6215 - Houston/Galveston Navigation Safety Advisory Committee

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-02-08

    ... SECURITY Coast Guard Houston/Galveston Navigation Safety Advisory Committee AGENCY: Coast Guard, DHS. ACTION: Notice of meetings. SUMMARY: The Houston/Galveston Navigation Safety Advisory Committee... improvements, aids to navigation, area projects impacting safety on the Houston Ship Channel, and various...

  6. 75 FR 27353 - Navigation Safety Advisory Council; Meeting

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-05-14

    ... SECURITY Coast Guard Navigation Safety Advisory Council; Meeting AGENCY: Coast Guard, DHS. ACTION: Notice of meeting. SUMMARY: The Navigation Safety Advisory Council (NAVSAC) will meet in Washington, DC, to discuss various issues relating to the safety of navigation. The meeting will be open to the public....

  7. 77 FR 15784 - Navigation Safety Advisory Council; Vacancies

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-03-16

    ... SECURITY Coast Guard Navigation Safety Advisory Council; Vacancies AGENCY: Coast Guard, DHS. ACTION: Request for applications. SUMMARY: The Coast Guard seeks applications for membership on the Navigation..., rammings, and groundings, Inland Rules of the Road, International Rules of the Road, navigation...

  8. 78 FR 32412 - Navigation Safety Advisory Council; Vacancies

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-05-30

    ... SECURITY Coast Guard Navigation Safety Advisory Council; Vacancies AGENCY: Coast Guard, DHS. ACTION: Request for applications. SUMMARY: The Coast Guard seeks applications for membership on the Navigation..., rammings, and groundings; Inland Rules of the Road; International Rules of the Road; navigation...

  9. 76 FR 63934 - Navigation Safety Advisory Council

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-10-14

    ... of the Federal Register (73 FR 3316). Docket: For access to the docket to read documents or comments... measures, marine information, diving safety, and aids to navigation systems. The meeting will be open to... information, diving safety, and aids to navigation systems. Agenda The NAVSAC will meet to review, discuss...

  10. 76 FR 2916 - Houston/Galveston Navigation Safety Advisory Committee; Meetings

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-01-18

    ... SECURITY Coast Guard Houston/Galveston Navigation Safety Advisory Committee; Meetings AGENCY: Coast Guard, DHS. ACTION: Notice of Meetings. SUMMARY: The Houston/Galveston Navigation Safety Advisory Committee... to discuss waterway improvements, aids to navigation, area projects impacting safety on the...

  11. 76 FR 65540 - National Space-Based Positioning, Navigation, and Timing (PNT) Advisory Board; Meeting

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-10-21

    ... SPACE ADMINISTRATION National Space-Based Positioning, Navigation, and Timing (PNT) Advisory Board...'s 2004 U.S. Space-Based Positioning, Navigation, and Timing Policy, the National Aeronautics and Space Administration announces a meeting of the National Space- Based Positioning, Navigation,...

  12. 77 FR 44288 - National Space-Based Positioning, Navigation, and Timing (PNT) Advisory Board; Meeting

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-07-27

    ... SPACE ADMINISTRATION National Space-Based Positioning, Navigation, and Timing (PNT) Advisory Board... President's 2004 U.S. Space-Based Positioning, Navigation, and Timing (PNT) Policy, the National Aeronautics and Space Administration (NASA) announces a meeting of the National Space-Based...

  13. 78 FR 65006 - National Space-Based Positioning, Navigation, and Timing (PNT) Advisory Board; Meeting

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-10-30

    ... SPACE ADMINISTRATION National Space-Based Positioning, Navigation, and Timing (PNT) Advisory Board; Meeting AGENCY: National Aeronautics and Space Administration (NASA). ACTION: Notice of meeting. SUMMARY... President's 2004 U.S. Space-Based Positioning, Navigation, and Timing (PNT) Policy, the National...

  14. 76 FR 27337 - Houston/Galveston Navigation Safety Advisory Committee

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-05-11

    ... of the Federal Register (73 FR 3316). Docket: For access to the docket to read background documents... Advisory Committee postponed its originally scheduled February 3, 2011, meeting due to inclement...

  15. 76 FR 22924 - Re-Establishment of the National Space-Based Positioning, Navigation, and Timing (PNT) Advisory...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-04-25

    ... From the Federal Register Online via the Government Publishing Office NATIONAL AERONAUTICS AND... (PNT) Advisory Board AGENCY: National Aeronautics and Space Administration (NASA). ACTION: Notice of..., Office of Space Communications and Navigation, National Aeronautics and Space Administration,...

  16. 75 FR 49508 - Navigation Safety Advisory Council; Vacancies

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-08-13

    ... industry (Group Two); one person who is a lawyer licensed by a state and who either practices or teaches... maritime academies; maritime education and training institutions teaching Rules of the Road, navigation... Employees (SGE). All Group Three members must be lawyers licensed by a state who either practice...

  17. 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.

  18. 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.

  19. 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.

  20. 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.

  1. Problems and concepts of space station guidance, navigation, and control

    NASA Technical Reports Server (NTRS)

    Guha, A. K.; Craig, M.

    1984-01-01

    The Space Station System is defined as a network of space and ground assets which work together to support a variety of missions including commercial missions, science and applications missions, and technology development missions. The elements of the Space Station System include a Space Station Base, Space Platforms, Free Flyers, a Teleoperator Manuevering System (TMS), Orbital Transfer Vehicles (OTV), Orbiter Berthing Equipment, and Ground Support Equipment and Facilities. Guidance, navigation, and control (GNC) subsystem requirements are considered along with configuration trades.

  2. Current sensing for navigated electrosurgery: proof of concept

    NASA Astrophysics Data System (ADS)

    Carter, K.; Lasso, A.; Ungi, T.; Morin, E.; Fichtinger, G.

    2016-03-01

    PURPOSE: Tracked power-tools are routinely used in computer-assisted intervention and surgical systems. In order to properly perform temporal and spatial monitoring of the tracked tool with the navigation system, it is important to know when the tool, such as an electrosurgical cauterizer, is being activated during surgery. We have developed a general purpose current sensor that can be augmented to tracked surgical devices in order to inform the surgeon and the navigation system when the tool is activated. METHODS: Two non-invasive AC current sensors, two peak detector circuits, one voltage comparator circuit, and a microcontroller were used to detect when an electrosurgical cauterizer is being powered on and differentiate between the cut and coagulation modes. The system was tested by cauterizing various substances at varied power ratings. RESULTS: By comparing the ratio of amplitudes as well as the frequencies of the signals, the current sensing system is able to differentiate between on/off, cut/coagulation, as well as when cauterizer tissue. DISCUSSION: The current sensing system is able to detect when the cauterizer is being powered on and can differentiate between monopolar cut and coagulation modes. CONCLUSION: This system shows promise for detecting when the cauterizer is being powered on and in the future could be integrated with a navigation system in order to easily temporally monitor the electrosurgical tool.

  3. Simulating the Liaison Navigation Concept in a Geo + Earth-Moon Halo Constellation

    NASA Technical Reports Server (NTRS)

    Fujimoto, K.; Leonard, J. M.; McGranaghan, R. M.; Parker, J. S.; Anderson, R. L.; Born, G. H.

    2012-01-01

    Linked Autonomous Interplanetary Satellite Orbit Navigation, or LiAISON, is a novel satellite navigation technique where relative radiometric measurements between two or more spacecraft in a constellation are processed to obtain the absolute state of all spacecraft. The method leverages the asymmetry of the gravity field that the constellation exists in. This paper takes a step forward in developing a high fidelity navigation simulation for the LiAISON concept in an Earth-Moon constellation. In particular, we aim to process two-way Doppler measurements between a satellite in GEO orbit and another in a halo orbit about the Earth-Moon L1 point.

  4. How Concept-Mapping Perception Navigates Student Knowledge Transfer Performance

    ERIC Educational Resources Information Center

    Tseng, Kuo-Hung; Chang, Chi-Cheng; Lou, Shi-Jer; Tan, Yue; Chiu, Chien-Jung

    2012-01-01

    The purpose of this paper is to investigate students' perception of concept maps as a learning tool where knowledge transfer is the goal. This article includes an evaluation of the learning performance of 42 undergraduate students enrolled in a nanotech course at a university in Taiwan. Canonical correlation and MANOVA analyses were employed to…

  5. 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.

  6. Concept of "One Window" Data Exchange System Fulfilling the Recommendation for e-Navigation System

    NASA Astrophysics Data System (ADS)

    Filipkowski, Damian; Wawruch, Ryszard

    The implementation in maritime radio-communication of so called "One window concept" for exchange of information between a ship and a port and coastal state authorities requires designation of one contact point on shore for these purposes, e.g. harbour master or ships' monitoring or traffic control centre. In Poland, as contact points regional and local centres of the Polish National Maritime Safety System will be designated. Paper describes the proposal for system of data exchange between a ship and a shore contact point, containing definition, functions and architecture of proposed system, possible directions of information flow and levels of access, fulfilling requirements of this concept and recommendation for e-navigation system developed on the basis of the International Maritime Organization (IMO) and International Association of Marine Aids to Navigation and Lighthouse Authorities (IALA) working papers.

  7. 78 FR 23598 - National Space-Based Positioning, Navigation, and Timing (PNT) Advisory Board; Meeting

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-04-19

    ... From the Federal Register Online via the Government Publishing Office NATIONAL AERONAUTICS AND...; Meeting AGENCY: National Aeronautics and Space Administration (NASA). ACTION: Notice of Meeting. SUMMARY... President's 2004 U.S. Space-Based Positioning, Navigation, and Timing (PNT) Policy, the National...

  8. Airspace Concept Evaluation System (ACES), Concept Simulations using Communication, Navigation and Surveillance (CNS) System Models

    NASA Technical Reports Server (NTRS)

    Kubat, Greg; Vandrei, Don

    2006-01-01

    Project Objectives include: a) CNS Model Development; b Design/Integration of baseline set of CNS Models into ACES; c) Implement Enhanced Simulation Capabilities in ACES; d) Design and Integration of Enhanced (2nd set) CNS Models; and e) Continue with CNS Model Integration/Concept evaluations.

  9. A spiral wave front beacon for underwater navigation: basic concept and modeling.

    PubMed

    Hefner, Brian T; Dzikowicz, Benjamin R

    2011-06-01

    A spiral wave front source produces an acoustic field that has a phase that is proportional to the azimuthal angle about the source. The concept of a spiral wave front beacon is developed by combining this source with a reference source that has a phase that is constant with the angle. The phase difference between these sources contains information about the receiver's azimuthal angle relative to the beacon and can be used for underwater navigation. To produce the spiral wave front, two sources are considered: a "physical-spiral" source, which produces the appropriate phase by physically deforming the active element of the source into a spiral, and a "phased-spiral" source, which uses an array of active elements, each driven with the appropriate phase, to produce the spiral wave front. Using finite element techniques, the fields produced by these sources are examined in the context of the spiral wave front beacon, and the advantages of each source are discussed.

  10. Technical concepts for vascular electromagnetic navigated interventions: aortic in situ fenestration and transjugular intrahepatic porto-systemic shunts.

    PubMed

    Penzkofer, Tobias; Isfort, Peter; Na, Hong-Sik; Wilkmann, Christoph; Osterhues, Sabine; Besting, Andreas; Hänisch, Christoph; Bisplinghoff, Stefan; Jansing, Johannes; von Werder, Sylvie; Gooding, Jorge; de la Fuente, Mathias; Mahnken, Andreas H; Disselhorst-Klug, Catherine; Schmitz-Rode, Thomas; Kuhl, Christiane K; Bruners, Philipp

    2014-04-01

    This work presents concepts for complex endovascular procedures using electromagnetic navigation technology (EMT). Navigation software interfacing a standard commercially available navigation system was developed, featuring registration, electromagnetic field distortion correction, breathing motion detection and gating, and state-of-the-art 3D imaging post processing. Protocols for endovascularly placed, in-situ fenestrated abdominal aortic stent grafts and an EMT guided transjugular intrahepatic portosystemic shunt (TIPSS) creation have been designed. A dedicated set of interventional devices was developed for each of the procedures: For aortic in-situ fenestration a combination of high-porosity stentgrafts, steerable catheters and electromagnetically navigated guidewires was used, for TIPSS a dual-navigated (sheath and stylet) TIPSS-device was designed and manufactured. The developed devices underwent phantom testing, in preparation for animal experiments to prove the feasibility of the approach. Once established, these systems could aid in performing these challenging interventional radiology procedures, exploiting the unique characteristics of electromagnetic navigation and solving multiple of the problems associated with these interventions being performed under X-ray fluoroscopy, such as lacking real-time 3D information or extensive exposure to ionizing radiation.

  11. 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.

  12. 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.

  13. Development and evaluation of 2D and 3D exocentric synthetic vision navigation display concepts for commercial aircraft

    NASA Astrophysics Data System (ADS)

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

    2005-05-01

    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.

  14. 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.

  15. Systems for dead-reckoning navigation and for simulation of instrumental error - Concepts

    NASA Technical Reports Server (NTRS)

    Green, W. L.

    1971-01-01

    Navigational system for manned lunar vehicles is intended for travel totaling 30 km within 5 km of home base, total distance traveled must be indicated with 2 percent accuracy. Hardware includes two two-degrees-of-freedom gyroscopes, odometers, tachometers, and signal processing equipment.

  16. 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.

  17. 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. PMID:19141895

  18. 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

  19. 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.

  20. Accuracy of navigated control concepts using an Er: Yag-laser for cavity preparation.

    PubMed

    Wolff, Regine; Weitz, Jochen; Poitzsch, Luise; Hohlweg-Majert, Bettina; Deppe, Herbert; Lueth, Tim C

    2011-01-01

    This paper describes a method for measuring the shape accuracy of a cylindrical hole which is created by means of an automatically power-controlled laser system using navigated control. In dental surgery, drills or mills are used for bone treatment. For most patients the use of these instruments is very inconvenient. Furthermore, the bone treatment with rotating instruments can lead to thermal necrosis. Using a laser system could be a good alternative for the patient. The utilization of a laser system could also facilitate bone treatment without any severe thermal damage. An optical navigation system can be used for a safer handling of a laser system. The position and the orientation of the laser handpiece relative to the patient can be calculated. Thereby, the laser can be automatically switched off, if the end of the laser beam does not hit the preoperative planned area. In order to measure the accuracy of such a laser system, we created several cavities in a phantom with a manually guided, automatically power-controlled laser. Afterwards, the deviation between the planned shape and the shape created by manually guided automatically power-controlled laser treatment has been measured. The application of this system showed, that the required accuracy of <1 mm for dental implantology applications, could not be reached.

  1. Study of aircraft centered navigation, guidance, and traffic situation system concept for terminal area operation

    NASA Technical Reports Server (NTRS)

    Anderson, W. W.; Will, R. W.; Grantham, C.

    1972-01-01

    A concept for automating the control of air traffic in the terminal area in which the primary man-machine interface is the cockpit is described. The ground and airborne inputs required for implementing this concept are discussed. Digital data link requirements of 10,000 bits per second are explained. A particular implementation of this concept including a sequencing and separation algorithm which generates flight paths and implements a natural order landing sequence is presented. Onboard computer/display avionics utilizing a traffic situation display is described. A preliminary simulation of this concept has been developed which includes a simple, efficient sequencing algorithm and a complete aircraft dynamics model. This simulated jet transport was flown through automated terminal-area traffic situations by pilots using relatively sophisticated displays, and pilot performance and observations are discussed.

  2. Confronting, Representing, and Believing Counterintuitive Concepts: Navigating the Natural and the Supernatural.

    PubMed

    Lane, Jonathan D; Harris, Paul L

    2014-03-01

    Recent research shows that even preschoolers are skeptical; they frequently reject claims from other people when the claims conflict with their own perceptions and concepts. Yet, despite their skepticism, both children and adults come to believe in a variety of phenomena that defy their first-hand perceptions and intuitive conceptions of the world. In this review, we explore how children and adults acquire such concepts. We describe how a similar developmental process underlies mental representation of both the natural and the supernatural world, and we detail this process for two prominent supernatural counterintuitive ideas-God and the afterlife. In doing so, we highlight the fact that conceptual development does not always move in the direction of greater empirical truth, as described within naturalistic domains. We consider factors that likely help overcome skepticism and, in doing so, promote belief in counterintuitive phenomena. These factors include qualities of the learners, aspects of the context, qualities of the informants, and qualities of the information.

  3. Navigating Competing Conceptions of Civic Education: Lessons from Three Israeli Civics Classrooms

    ERIC Educational Resources Information Center

    Cohen, Aviv

    2016-01-01

    The concentration of this study was the documentation and analysis of ways in which competing conceptions of citizenship play out in actual classroom settings. Examining three cases in the context of the Israeli education system, its findings show that civics teachers' views and beliefs influenced ways in which they interpreted the curriculum…

  4. Confronting, Representing, and Believing Counterintuitive Concepts: Navigating the Natural and the Supernatural.

    PubMed

    Lane, Jonathan D; Harris, Paul L

    2014-03-01

    Recent research shows that even preschoolers are skeptical; they frequently reject claims from other people when the claims conflict with their own perceptions and concepts. Yet, despite their skepticism, both children and adults come to believe in a variety of phenomena that defy their first-hand perceptions and intuitive conceptions of the world. In this review, we explore how children and adults acquire such concepts. We describe how a similar developmental process underlies mental representation of both the natural and the supernatural world, and we detail this process for two prominent supernatural counterintuitive ideas-God and the afterlife. In doing so, we highlight the fact that conceptual development does not always move in the direction of greater empirical truth, as described within naturalistic domains. We consider factors that likely help overcome skepticism and, in doing so, promote belief in counterintuitive phenomena. These factors include qualities of the learners, aspects of the context, qualities of the informants, and qualities of the information. PMID:24683418

  5. Confronting, Representing, and Believing Counterintuitive Concepts: Navigating the Natural and the Supernatural

    PubMed Central

    Lane, Jonathan D.; Harris, Paul. L.

    2014-01-01

    Recent research shows that even preschoolers are skeptical; they frequently reject claims from other people when the claims conflict with their own perceptions and concepts. Yet, despite their skepticism, both children and adults come to believe in a variety of phenomena that defy their first-hand perceptions and intuitive conceptions of the world. In this review, we explore how children and adults acquire such concepts. We describe how a similar developmental process underlies mental representation of both the natural and the supernatural world, and we detail this process for two prominent supernatural counterintuitive ideas—God and the afterlife. In doing so, we highlight the fact that conceptual development does not always move in the direction of greater empirical truth, as described within naturalistic domains. We consider factors that likely help overcome skepticism, and in doing so promote belief in counterintuitive phenomena. These factors include qualities of the learners, aspects of the context, qualities of the informants, and qualities of the information. PMID:24683418

  6. United States Control Module Guidance, Navigation, and Control Subsystem Design Concept

    NASA Technical Reports Server (NTRS)

    Polites, M. E.; Bartlow, B. E.

    1997-01-01

    Should the Russian Space Agency (RSA) not participate in the International Space Station (ISS) program, then the United States (U.S.) National Aeronautics and Space Administration (NASA) may choose to execute the ISS mission. However, in order to do this, NASA must build two new space vehicles, which must perform the functions that the Russian vehicles and hardware were to perform. These functions include periodic ISS orbit reboost, initial ISS attitude control, and U.S. On-Orbit Segment (USOS) control Moment gyroscope (CMG) momentum desaturation. The two new NASA vehicles that must perform these functions are called the U.S. control module (USCM) and the U.S. resupply module. This paper presents a design concept for the USCM GN&C subsystem, which must play a major role in ISS orbit reboost and initial attitude control, plus USOS CMG momentum desaturation. The proposed concept is structured similar to the USOS GN&C subsystem, by design. It is very robust, in that it allows the USCM to assume a variety of vehicle attitudes and stay power-positive. It has a storage/safe mode that places the USCM in a gravity-gradient orientation and keeps it there for extended periods of time without consuming a great deal of propellant. Simulation results are presented and discussed that show the soundness of the design approach. An equipment list is included that gives detailed information on the baselined GN&C components.

  7. 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.

  8. 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.

  9. 75 FR 60145 - PNT Advisory Board; Meeting

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-09-29

    ... Space-Based Positioning, Navigation, and Timing (PNT) Advisory Board. DATES: Thursday, October 14, 2010... on U.S. Space-Based Positioning, Navigation and Timing (PNT) Policy and Global Positioning System... GPS Standard Positioning Service Performance Standards and effects on non-ICD compliant...

  10. 77 FR 19302 - Navigation Safety Advisory Council

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-03-30

    ... a briefing on the ACPARS undertaken to accommodate offshore wind energy development. (8) Form... Register (73 FR 3316). Docket: For access to the docket to read documents or comments related to...

  11. 78 FR 68077 - Navigation Safety Advisory Council

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-11-13

    ... Study (ACPARS). The Council will receive an update on the ACPARS undertaken to accommodate offshore wind energy development. The update will include a presentation on what activities are currently in progress... January 17, 2008, issue of the Federal Register (73 FR 3316). Docket: For access to the docket to...

  12. 77 FR 67658 - Navigation Safety Advisory Council

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-11-13

    ... invite their comments or input regarding the extent of current users. (5) Off-shore wind farms/renewable energy. The Council will receive an update of the status of offshore wind energy development. (6) Request... FR 3316). Docket: For access to the docket to read documents or comments related to this notice,...

  13. 78 FR 18615 - Navigation Safety Advisory Council

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-03-27

    ... receive an update on the ACPARS undertaken to accommodate offshore wind energy development. The update... regarding our public dockets in the January 17, 2008, issue of the Federal Register (73 FR 3316)....

  14. Nonlinear trajectory navigation

    NASA Astrophysics Data System (ADS)

    Park, Sang H.

    Trajectory navigation entails the solution of many different problems that arise due to uncertain knowledge of the spacecraft state, including orbit prediction, correction maneuver design, and trajectory estimation. In practice, these problems are usually solved based on an assumption that linear dynamical models sufficiently approximate the local trajectory dynamics and their associated statistics. However, astrodynamics problems are nonlinear in general and linear spacecraft dynamics models can fail to characterize the true trajectory dynamics when the system is subject to a highly unstable environment or when mapped over a long time period. This limits the performance of traditional navigation techniques and can make it difficult to perform precision analysis or robust navigation. This dissertation presents an alternate method for spacecraft trajectory navigation based on a nonlinear local trajectory model and their statistics in an analytic framework. For a given reference trajectory, we first solve for the higher order Taylor series terms that describe the localized nonlinear motion and develop an analytic expression for the relative solution flow. We then discuss the nonlinear dynamical mapping of a spacecraft's probability density function by solving the Fokker-Planck equation for a deterministic system. From this result we derive an analytic method for orbit uncertainty propagation which can replicate Monte-Carlo simulations with the benefit of added flexibility in initial orbit statistics. Using this approach, we introduce the concept of the statistically correct trajectory where we directly incorporate statistical information about an orbit state into the trajectory design process. As an extension of this concept, we define a nonlinear statistical targeting method where we solve for a correction maneuver which intercepts the desired target on average. Then we apply our results to a Bayesian filtering problem to obtain a general filtering algorithm for

  15. New bionic navigation algorithm based on the visual navigation mechanism of bees

    NASA Astrophysics Data System (ADS)

    Huang, Yufeng; Liu, Yi; Liu, Jianguo

    2015-04-01

    Through some research on visual navigation mechanisms of flying insects especially honeybees, a novel navigation algorithm integrating entropy flow with Kalman filter has been introduced in this paper. Concepts of entropy image and entropy flow are also introduced, which can characterize topographic features and measure changes of the image respectively. To characterize texture feature and spatial distribution of an image, a new concept of contrast entropy image has been presented in this paper. Applying the contrast entropy image to the navigation algorithm to test its' performance of navigation and comparing with simulation results of intensity entropy image, a conclusion that contrast entropy image performs better and more robust in navigation has been made.

  16. Viking navigation

    NASA Technical Reports Server (NTRS)

    Oneil, W. J.; Rudd, R. P.; Farless, D. L.; Hildebrand, C. E.; Mitchell, R. T.; Rourke, K. H.; Euler, E. A.

    1979-01-01

    A comprehensive description of the navigation of the Viking spacecraft throughout their flight from Earth launch to Mars landing is given. The flight path design, actual inflight control, and postflight reconstruction are discussed in detail. The preflight analyses upon which the operational strategies and performance predictions were based are discussed. The inflight results are then discussed and compared with the preflight predictions and, finally, the results of any postflight analyses are presented.

  17. INL Autonomous Navigation System

    SciTech Connect

    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.

  18. Senior Adult Consumer Advisory Manual,

    ERIC Educational Resources Information Center

    Ater, E. Carolyn, Ed.

    This manual is intended for use by senior adult peer advisors (age 60 and over) engaged in helping relationships in providing consumer education to other senior adults. The advisory procedures are based on a problem solving approach which incorporates the development of a self-help concept. Chapter 1 provides information on consumer advising. It…

  19. 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.

  20. Computation Simulation Of Autonomous Vehicle Navigation

    NASA Astrophysics Data System (ADS)

    Meystel, A.; Koch, E.

    1984-06-01

    A concept of navigation is simulated based upon heuristic search. A mobile robot with a vision system navigates with an unknown or an unclear map. The range of vision is limited, thus, inflicting various judgments concerned with the comparison of alternatives of motion. The frequency of the decision-making procedure is limited by a definite time of computation. The system is simulated with a number of maps and the results of navigation are compared.

  1. 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

  2. PNP: mining of profile navigational patterns

    NASA Astrophysics Data System (ADS)

    Li, Hua-Fu; Shan, Man-Kwan

    2002-03-01

    Web usage mining is a key knowledge discovery research and as such has been well researched. So far, this research has focused mainly on databases containing access log data only. However, many real-world databases contain users profile data and current solutions for this situation are still insufficient. In this paper we have a large database containing of user profile information together with user web-pages navigation patterns. The user profile data includes quantitative attributes, such as salary or age, and categorical attributes, such as sex or marital status. We introduce the concept of profile navigation patterns, which discusses the problem of relating user profile information to navigational behavior. An example of such profile navigation pattern might be 20% of married people between age 25 and 30 have the similar navigational behavior <(a,c)(c,h)(h,i)(i,h)(h,l)>, where a, c, h, i, l are web pages in a web site. The navigation patterns may contain the generic traversal behavior, e.g. trend to backward moves, cycles etc. The objective of mining profile navigation patterns is to identify browser profile for web personalization. We give an algorithm for mining such profile navigation patterns. Our method (algorithm PNP) can discover profile navigation patterns efficiently. We also present new inclination measurements to identify the interesting profile navigational patterns. Experimental results show the efficiency and scalability of PNP.

  3. 78 FR 21911 - Environmental Technologies Trade Advisory Committee Public Meeting

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-04-12

    ... International Trade Administration Environmental Technologies Trade Advisory Committee Public Meeting AGENCY... notice sets forth the schedule and proposed agenda of a meeting of the Environmental Technologies Trade... adoption of environmental technologies and discuss ways to leverage the concept of sustainability...

  4. 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…

  5. Microcomputers and astronomical navigation.

    NASA Astrophysics Data System (ADS)

    Robin-Jouan, Y.

    1996-04-01

    Experienced navigators remember ancient astronomical navigation and its limitations. Using microcomputers in small packages and selecting up-to-date efficient methods will overcome many of these limitations. Both features lead to focus on observations, and encourage an increase in their numbers. With no intention of competing with satellite navigation, sextant navigation in the open sea can then be accessed again by anybody. It can be considered for demonstrative use or as a complement to the GPS.

  6. Analysis of Ares 1 Ascent Navigation Options

    NASA Technical Reports Server (NTRS)

    Norris, Lee; Tao, Yee-Chee; Hall, Robert; Chuang, Jason; Whorton, Mark

    2008-01-01

    The paper documents a collaborative analysis of ascent Navigation options for the Ares 1 launch vehicle by the NASA Marshall Space Flight Center (MSFC) and the C. S. Draper Laboratory. The objective of the work was the development of a Navigation concept and supporting requirements which meet the Ares 1 accuracy specification in a manner which is straightforward, reliable, and cost effective. Six primary Navigation architectures were considered. In each case analysis was performed to determine under what conditions the required accuracy at second stage cutoff could be achieved. Those architectures which met the accuracy requirements were then assessed in terms of cost, complexity, and reliability to determine a baseline Navigation approach and the primary supporting requirements.

  7. 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.

  8. Innovations for Navigating the Doctoral Dissertation

    ERIC Educational Resources Information Center

    Di Pierro, Marianne

    2011-01-01

    Concept papers and quality circles help future dissertation advisors improve doctoral student success in the completion of the Ph.D. and increase retention. Through these tools, students navigate the conceptual development of a topic and evaluate final drafts of chapters. Implementation of these innovations indicates positive trends in the…

  9. 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.

  10. 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.

  11. Development of visual-display aid to air navigation

    NASA Technical Reports Server (NTRS)

    Matcovich, T. J.

    1973-01-01

    The developments are discussed in the design of a liquid-crystal, visual display, air navigation aid, which uses two VOR signals to locate the aircraft. The system concepts, liquid crystal materials, stability tests, and the electronic system are described. It is concluded that a navigational aid of this type is technically feasible, but not at the projected low cost.

  12. Maps and navigation methods

    NASA Technical Reports Server (NTRS)

    Duval, A

    1922-01-01

    Different maps and scales are discussed with particular emphasis on their use in aviation. The author makes the observation that current navigation methods are slow and dangerous and should be replaced by scientific methods of navigation based on loxodromy and the use of the compass.

  13. Navigator program risk management

    NASA Technical Reports Server (NTRS)

    Wessen, Randii R.; Padilla, Deborah A.

    2004-01-01

    In this paper, program risk management as applied to the Navigator Program: In Search of New Worlds will be discussed. The Navigator Program's goals are to learn how planetary systems form and to search for those worlds that could or do harbor life.

  14. 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…

  15. 76 FR 18757 - Monthly Public Meetings of the Local Government Advisory Committee's Small Community Advisory...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-04-05

    ... AGENCY Monthly Public Meetings of the Local Government Advisory Committee's Small Community Advisory... Advisory Committee Act, the U.S. Environmental Protection Agency's Local Government Advisory Committee's... the Local Government Advisory Committee. BILLING CODE 6560-50-P...

  16. 78 FR 70946 - The President's Management Advisory Board (PMAB); Notification of Upcoming Public Advisory Meeting

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-11-27

    ... ADMINISTRATION The President's Management Advisory Board (PMAB); Notification of Upcoming Public Advisory Meeting.... SUMMARY: The President's Management Advisory Board (PMAB), a Federal Advisory Committee established in... Management Advisory Board, Office of Executive Councils, General Services Administration, 1800 F Street...

  17. 78 FR 40144 - Governmentwide Travel Advisory Committee (GTAC); Upcoming Public Advisory Committee Meeting

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-07-03

    ... ADMINISTRATION Governmentwide Travel Advisory Committee (GTAC); Upcoming Public Advisory Committee Meeting AGENCY... Governmentwide Travel Advisory Committee (GTAC) (the Committee), is a Federal Advisory Committee established in..., Designated Federal Officer (DFO), Governmentwide Travel Advisory Committee (GTAC), Office of...

  18. 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

    ... ADMINISTRATION The President's Management Advisory Board (PMAB); Notification of Upcoming Public Advisory Meeting.... SUMMARY: The President's Management Advisory Board (PMAB), a Federal Advisory Committee established in... Officer, President's Management Advisory Board, Office of Executive Councils, General...

  19. 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

    ... ADMINISTRATION The President's Management Advisory Board (PMAB); Notification of Upcoming Public Advisory Meeting.... SUMMARY: The President's Management Advisory Board (PMAB), a Federal Advisory Committee established in..., President's Management Advisory Board, Office of Executive Councils, General Services Administration, 1776...

  20. 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.

  1. 75 FR 23793 - Houston/Galveston Navigation Safety Advisory Committee

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-05-04

    ... 25, 2010. ADDRESSES: The full Committee will meet at the Charles T. Doyle Convention Center, 2010 5th... written material and requests to make oral presentations to Commander Michael Zidik, Assistant...

  2. Navigation lights color study

    NASA Astrophysics Data System (ADS)

    Barbosa, Jose G.; Alberg, Matthew T.

    2015-05-01

    The chromaticity of navigation lights are defined by areas on the International Commission on Illumination (CIE) 1931 chromaticity diagram. The corner coordinates for these areas are specified in the International Regulations for Prevention of Collisions at Sea, 1972 (72 COLREGS). The navigation light's color of white, red, green, and yellow are bounded by these areas. The chromaticity values specified by the COLREGS for navigation lights were intended for the human visual system (HVS). The HVS can determine the colors of these lights easily under various conditions. For digital color camera imaging systems the colors of these lights are dependent on the camera's color spectral sensitivity, settings, and color correction. At night the color of these lights are used to quickly determine the relative course of vessels. If these lights are incorrectly identified or there is a delay in identifying them this could be a potential safety of ship concern. Vessels that use camera imaging systems exclusively for sight, at night, need to detect, identify, and discriminate navigation lights for navigation and collision avoidance. The introduction of light emitting diode (LED) lights and lights with different spectral signatures have the potential to be imaged very differently with an RGB color filter array (CFA) color camera than with the human eye. It has been found that some green navigation lights' images appear blue verse green. This has an impact on vessels that use camera imaging systems exclusively for navigation. This paper will characterize color cameras ability to properly reproducing navigation lights' color and survey a set of navigation light to determine if they conform to the COLREGS.

  3. Advisory Committee Handbook.

    ERIC Educational Resources Information Center

    Black Hawk Coll., Moline, IL.

    An advisory committee is generally comprised of persons outside the education profession who have specialized knowledge in a given area. The committee advises, makes recommendations, and gives service to the college and its students, instructors, and administrators. At Black Hawk College, there are four types of advisory committees: community,…

  4. Navigation Systems for Ablation

    PubMed Central

    Wood, B. J.; Kruecker, J.; Abi-Jaoudeh, N; Locklin, J.; Levy, E.; Xu, S.; Solbiati, L.; Kapoor, A.; Amalou, H.; Venkatesan, A.

    2010-01-01

    Navigation systems, devices and intra-procedural software are changing the way we practice interventional oncology. Prior to the development of precision navigation tools integrated with imaging systems, thermal ablation of hard-to-image lesions was highly dependent upon operator experience, spatial skills, and estimation of positron emission tomography-avid or arterial-phase targets. Numerous navigation systems for ablation bring the opportunity for standardization and accuracy that extends our ability to use imaging feedback during procedures. Existing systems and techniques are reviewed, and specific clinical applications for ablation are discussed to better define how these novel technologies address specific clinical needs, and fit into clinical practice. PMID:20656236

  5. Space shuttle navigation analysis

    NASA Technical Reports Server (NTRS)

    Jones, H. L.; Luders, G.; Matchett, G. A.; Sciabarrasi, J. E.

    1976-01-01

    A detailed analysis of space shuttle navigation for each of the major mission phases is presented. A covariance analysis program for prelaunch IMU calibration and alignment for the orbital flight tests (OFT) is described, and a partial error budget is presented. The ascent, orbital operations and deorbit maneuver study considered GPS-aided inertial navigation in the Phase III GPS (1984+) time frame. The entry and landing study evaluated navigation performance for the OFT baseline system. Detailed error budgets and sensitivity analyses are provided for both the ascent and entry studies.

  6. Spatial cognition and navigation

    NASA Technical Reports Server (NTRS)

    Aretz, Anthony J.

    1989-01-01

    An experiment that provides data for the development of a cognitive model of pilot flight navigation is described. The experiment characterizes navigational awareness as the mental alignment of two frames of reference: (1) the ego centered reference frame that is established by the forward view out of the cockpit and (2) the world centered reference frame that is established by the aircraft's location on a map. The data support a model involving at least two components: (1) the perceptual encoding of the navigational landmarks and (2) the mental rotation of the map's world reference frame into alignment with the ego centered reference frame. The quantitative relationships of these two factors are provided as possible inputs for a computational model of spatial cognition during flight navigation.

  7. Onboard Navigation Systems Characteristics

    NASA Technical Reports Server (NTRS)

    1979-01-01

    The space shuttle onboard navigation systems characteristics are described. A standard source of equations and numerical data for use in error analyses and mission simulations related to space shuttle development is reported. The sensor characteristics described are used for shuttle onboard navigation performance assessment. The use of complete models in the studies depend on the analyses to be performed, the capabilities of the computer programs, and the availability of computer resources.

  8. 76 FR 8715 - Technology Advisory Committee

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-02-15

    ... 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...: Office of the Secretary. Please use the title ``Technology Advisory Committee'' in any written...

  9. 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.

  10. 77 FR 13131 - Advisory Committees; Filing of Closed Meeting Reports

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-03-05

    ... Research Allergenic Products Advisory Committee Blood Products Advisory Committee Cellular, Tissue and Gene Therapies Advisory Committee Vaccines and Related Biological Products Advisory Committee Center for...

  11. Voyager navigation strategy and accuracy

    NASA Technical Reports Server (NTRS)

    Jones, J. B.; Mcdanell, J. P.; Bantell, M. H., Jr.; Chadwick, C.; Jacobson, R. A.; Miller, L. J.; Synnott, S. P.; Van Allen, R. E.

    1977-01-01

    The paper presents the results of the prelaunch navigation studies conducted for the Mariner spacecraft launched toward encounters with the giant planets. The navigation system and the strategy for using this system are described. The requirements on the navigation system demanded by the goals of the project are mentioned, and the predicted navigational capability relative to each of the requirements is discussed. Baseline navigation results for three possible trajectories are analyzed.

  12. 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.

  13. Innovative Approaches to Reducing Cancer Health Disparities: The Moffitt Cancer Center Patient Navigator Research Program

    PubMed Central

    Wells, Kristen J.; Meade, Cathy D.; Calcano, Ercilia; Lee, Ji-Hyun; Rivers, Desiree; Roetzheim, Richard G.

    2013-01-01

    The Moffitt Cancer Center Patient Navigation Research Program (Moffitt PNRP) is evaluating the efficacy of patient navigation in reducing delays from screening abnormality to diagnostic resolution of a breast or colorectal abnormality. The Moffitt PNRP was conducted in three phases: (1) developing an acceptable, appealing, and culturally appropriate patient navigation program; (2) conducting a group randomized controlled trial to evaluate the patient navigation program; and (3) disseminating research findings and Moffitt PNRP intervention model. The patient navigation program was developed through significant formative research, input from the Moffitt PNRP Community Advisory Board, and through a close collaboration with the Tampa Bay Community Cancer Network. 1367 patients are enrolled in the Phase 2 group randomized trial of the Moffitt PNRP. Most Moffitt PNRP group randomized trial participants are Hispanic, female, and Spanish speaking, with minimal education and income. The intervention is being disseminated in primary care clinics in west central Florida. PMID:21573740

  14. 76 FR 22395 - Federal Advisory Committee Act; Open Internet Advisory Committee

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-04-21

    ... COMMISSION Federal Advisory Committee Act; Open Internet Advisory Committee AGENCY: Federal Communications... ``Open Internet Advisory Committee'' (hereinafter ``the Committee''), is being established. FOR FURTHER... Internet rules (available at...

  15. Aerocapture navigation at Neptune

    NASA Technical Reports Server (NTRS)

    Haw, Robert J.

    2003-01-01

    A proposed Neptune orbiter Aerocapture mission will use solar electric propulsion to send an orbiter to Neptune. Navigation feasibility of direct-entry aerocapture for orbit insertion at Neptune is shown. The navigation strategy baselines optical imaging and (delta)VLBI measurement in order to satisfy the flight system's atmosphere entry flight path angle, which is targeted to enter Neptune with an entry flight path angle of -11.6 . Error bars on the entry flight path angle of plus/minus0.55 (3(sigma)) are proposed. This requirement can be satisfied with a data cutoff 3.2 days prior to arrival. There is some margin in the arrival template to tighten (i.e. reduce) the entry corridor either by scheduling a data cutoff closer to Neptune or alternatively, reducing uncertainties by increasing the fidelity of the optical navigation camera.

  16. Mars Rover Concept Development

    NASA Astrophysics Data System (ADS)

    McTamaney, Louis S.; Harmon, Scott Y.

    1989-03-01

    FMC conducted a carefully structured study effort designed to develop an extensive set of mobility and navigation concepts for a planetary exploration vehicle. This focused study commenced with a requirements analysis that defined operational and functional requirements and constraints. Next, the physical system, its value system (evaluation parameters and design criteria) and the martian terrain design environment (surface models) were developed simultaneously. Mobility (the basic vehicle structure, suspension, and power train) and navigation (both global and local navigation including global reference, local terrain assessment, and guidance and control) concepts were developed independently and then integrated. Special attention was paid to the interdependency of navigation and locomotion in order to strike the appropriate balance between autonomy and mobility. Finally, the most promising concepts were subjected to a rigorous, structured evaluation process to derive the best candidate systems. To support the evaluation process, a three-layer computer model of the martian surface was developed. This model was based on the 1/64° Digital Elevation Model (DEM) of Mars developed by USGS Flagstaff. Local surface roughness based on measured martian slope distribution and power spectral density was superimposed on the DEM. Rocks based on H. Moore's distribution model were then added. To assess performance, selected concepts were modeled using DADSR from Computer Aided Software Inc., and simulations were run with the vehicle traversing the martian surface model, including one meter high vertical steps and one meter wide crevasses . During the course of this study, over 300 mobility concepts and more than 400 navigation concepts generated during a series of brainstorming sessions evolved into three promising candidate systems. The evolution of these systems is discussed; design details, conclusions and recommendations are presented.

  17. Electromagnetically navigated laparoscopic ultrasound.

    PubMed

    Wilheim, Dirk; Feussner, Hubertus; Schneider, Armin; Harms, Jens

    2003-01-01

    A three-dimensional (3D) representation of laparoscopic ultrasound examinations could be helpful in diagnostic and therapeutic laparoscopy, but has not yet been realised with flexible laparoscopic ultrasound probes. Therefore, an electromagnetic navigation system was integrated into the tip of a conventional laparoscopic ultrasound probe. Navigated 3D laparoscopic ultrasound was compared with the imaging data of 3D navigated transcutaneous ultrasound and 3D computed tomography (CT) scan. The 3D CT scan served as the "gold standard". Clinical applicability in standardized operating room (OR) settings, imaging quality, diagnostic potential, and accuracy in volumetric assessment of various well-defined hepatic lesions were analyzed. Navigated 3D laparoscopic ultrasound facilitates exact definition of tumor location and margins. As compared with the "gold standard" of the 3D CT scans, 3D laparoscopic ultrasound has a tendency to underestimate the volume of the region of interest (ROI) (Delta3.1%). A comparison of 3D laparoscopy and transcutaneous 3D ultrasonography demonstrated clearly that the former is more accurate for volumetric assessment of the ROI and facilitates a more detailed display of the lesions. 3D laparoscopic ultrasound imaging with a navigated probe is technically feasible. The technique facilitates detailed ultrasound evaluation of laparoscopic procedures that involve visual, in-depth, and volumetric perception of complex liver pathologies. Navigated 3D laparoscopic ultrasound may have the potential to promote the practical role of laparoscopic ultrasonography, and become a valuable tool for local ablative therapy. In this article, our clinical experiences with a certified prototype of a 3D laparoscopic ultrasound probe, as well as its in vitro and in vivo evaluation, is reported.

  18. 78 FR 48438 - Pediatric Ethics Subcommittee of the Pediatric Advisory Committee; Notice of Meeting

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-08-08

    ..., or call the advisory committee information line to learn about possible modifications before coming... medical counter measures, focusing on the concepts of minimal risk, disorder or condition, and exposure...

  19. 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.

  20. 78 FR 33092 - Federal Advisory Committee Act; Technological Advisory Council

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-06-03

    ... From the Federal Register Online via the Government Publishing Office FEDERAL COMMUNICATIONS COMMISSION Federal Advisory Committee Act; Technological Advisory Council AGENCY: Federal Communications..., this notice advises interested persons that the Federal Communications Commission's (FCC)...

  1. 77 FR 70434 - Federal Advisory Committee Act; Technological Advisory Council

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-11-26

    ... From the Federal Register Online via the Government Publishing Office FEDERAL COMMUNICATIONS COMMISSION Federal Advisory Committee Act; Technological Advisory Council AGENCY: Federal Communications..., this notice advises interested persons that the Federal Communications Commission's (FCC)...

  2. Methods of Optical Navigation

    NASA Technical Reports Server (NTRS)

    Owen, William M., Jr.

    2011-01-01

    Optical navigation is the use of onboard imaging to aid in the determination of the spacecraft trajectory and of the targets' ephemerides. Opnav techniques provide a direct measurement of the direction from a spacecraft to target bodies. Opnav data thus complement both radiometric tracking data (for instance, Doppler and range) and the groundbased astrometry which is used to determine the a priori ephemeris of the targets. We present the geometry and camera models which form the mathematical basis for optical navigation and some of the image processing techniques by which one can extract the optical observables--that is, the sample and line coordinates of images--from pictures.

  3. Mariner 9 navigation

    NASA Technical Reports Server (NTRS)

    Neil, W. J.; Jordan, J. F.; Zielenbach, J. W.; Wong, S. K.; Mitchell, R. T.; Webb, W. A.; Koskela, P. E.

    1973-01-01

    A final, comprehensive description of the navigation of Mariner 9-the first U.S. spacecraft to orbit another planet is provided. The Mariner 9 navigation function included not only precision flight path control but also pointing of the spacecraft's scientific instruments mounted on a two degree of freedom scan platform. To the extent appropriate, each section describes the perflight analyses on which the operational strategies and performance predictions were based. Inflight results are then discussed and compared with the preflight predictions. Postflight analyses, which were primarily concerned with developing a thorough understanding of unexpected in-flight results, are also presented.

  4. Experimental validation of GPS-INS-STAR hybrid navigation system for space autonomy

    NASA Astrophysics Data System (ADS)

    Tanabe, Toru; Harigae, Masatoshi

    The experimental validation of the GPS-INS-STAR hybrid navigation system concept is performed. The hybrid navigation system combines the best features of employed sensors to improve total navigation performances. The GPS-INS-STAR hybrid navigation system consists of the three different sensors, a GPS receiver, an inertial navigation system and a STAR image sensor. In this concept, the system integrates a high positioning performance of the GPS system, an accurate attitude determination capability of the STAR image sensor and the INS signal with a wide bandwidth. It results in a complete 6-DOF (degrees of freedom) autonomous navigation system. The present paper shows the validation of the concept by the experiments using GPS, INS and STAR hardware systems. The experiments are divided into three steps. Firstly, the INS-STAR hybrid navigation system is constructed on the 3-axis motion table to verify the performances of its attitude loop. Secondly, the GPS-INS hybrid navigation system installed on the car shows the performance improvement in its translational loop. Finally, the full configuration of the GPS-INS-STAR hybrid navigation system is evaluated at night. Each experiment result is checked by the theoretical analysis. In the theoretical analysis, the concept of observability well explains the performances of the system. Its feasibility for space application is also evaluated in the point of existing hardware technology. It is concluded that the experiments vaidate the concept of the hybrid navigation system and confirm its capability to realize space autonomy.

  5. 76 FR 12981 - Lower Mississippi River Waterway Safety Advisory Committee; Meeting

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-03-09

    ... Warrant Officer David Chapman, Assistant to the DFO of Lower Mississippi River Waterway Safety Advisory... (RNA); Gulf Intracoastal Waterway, Inner Harbor Navigation Canal, Harvey Canal, Algiers Canal, New Orleans, LA published in the Federal Register, Vol. 75, page 32275 (75 FR 32275), on June 8, 2010,...

  6. Navigation for everyday life

    SciTech Connect

    Fu, D.D.; Hammond, K.J.; Swain, M.J.

    1996-12-31

    Past work in navigation has worked toward the goal of producing an accurate map of the environment. While no one can deny the usefulness of such a map, the ideal of producing a complete map becomes unrealistic when an agent is faced with performing real tasks. And yet an agent accomplishing recurring tasks should navigate more efficiently as time goes by. We present a system which integrates navigation, planning, and vision. In this view, navigation supports the needs of a larger system as opposed to being a task in its own right. Whereas previous approaches assume an unknown and unstructured environment, we assume a structured environment whose organization is known, but whose specifics are unknown. The system is endowed with a wide range of visual capabilities as well as search plans for informed exploration of a simulated store constructed from real visual data. We demonstrate the agent finding items while mapping the world. In repeatedly retrieving items, the agent`s performance improves as the learned map becomes more useful.

  7. Navigating between the Dimensions

    ERIC Educational Resources Information Center

    Fleron, Julian F.; Ecke, Volker

    2011-01-01

    Generations have been inspired by Edwin A. Abbott's profound tour of the dimensions in his novella "Flatland: A Romance of Many Dimensions" (1884). This well-known satire is the story of a flat land inhabited by geometric shapes trying to navigate the subtleties of their geometric, social, and political positions. In this article, the authors…

  8. Learning for autonomous navigation

    NASA Technical Reports Server (NTRS)

    Angelova, Anelia; Howard, Andrew; Matthies, Larry; Tang, Benyang; Turmon, Michael; Mjolsness, Eric

    2005-01-01

    Autonomous off-road navigation of robotic ground vehicles has important applications on Earth and in space exploration. Progress in this domain has been retarded by the limited lookahead range of 3-D sensors and by the difficulty of preprogramming systems to understand the traversability of the wide variety of terrain they can encounter.

  9. Galileo asteroid encounter navigation

    NASA Technical Reports Server (NTRS)

    Murrow, D. W.; Chodas, P. W.; Kallemeyn, P. H.

    1990-01-01

    The Galileo spacecraft will be targeted to encounter one or more asteroids during its cruise to Jupiter. Accurate navigation will maximize science return from these asteroid flyby opportunities. Navigation errors for these encounters are dominated by uncertainties in the asteroid ephemeris, which is obtained from fits to ground-based observations. As the spacecraft approaches, on-board optical navigation dramatically improves knowledge of the spacecraft-relative asteroid position normal to the line of sight, while correlations in the asteroid ephemeris provide moderate improvement along the approach direction. The remaining uncertainty in encounter time can be further reduced only by improving the ground-based asteroid ephemeris. Uncertainties perpendicular to the line of sight can be reduced by improving the timing of optical navigation images and their placement with respect to the star background. At the closest approach to the asteroid Gaspra, the one-sigma errors in knowledge of the spacecraft position are less than 10 km in position and 25 seconds in encounter time.

  10. Advisory Technical Skills Committee Manual

    ERIC Educational Resources Information Center

    Barbee, Jim R.

    2005-01-01

    The use of advisory committees is well established in the public school system. The purpose of advisory committees is to provide leadership, guidance and technical assistance to maintain, improve and develop quality career and technical education programs. This manual is written for those planning to form new advisory technical skills committees,…

  11. 78 FR 9917 - The President's Management Advisory Board (PMAB); Notification of Upcoming Public Advisory Meeting

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-02-12

    ...) portfolio and project management; Senior Executive Service (SES) leadership development and SES performance... ADMINISTRATION The President's Management Advisory Board (PMAB); Notification of Upcoming Public Advisory Meeting.... SUMMARY: The President's Management Advisory Board (PMAB), a Federal Advisory Committee established...

  12. 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... ADMINISTRATION The President's Management Advisory Board (PMAB); Notification of Upcoming Public Advisory Meeting.... SUMMARY: The President's Management Advisory Board (PMAB), a Federal Advisory Committee established...

  13. 76 FR 53901 - The President's Management Advisory Board (PMAB); Notification of Upcoming Public Advisory Meeting

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-08-30

    ... improve government performance in the areas of IT portfolio and project management, IT vendor performance... ADMINISTRATION The President's Management Advisory Board (PMAB); Notification of Upcoming Public Advisory Meeting.... SUMMARY: The President's Management Advisory Board (PMAB), a Federal Advisory Committee established...

  14. 77 FR 59399 - The President's Management Advisory Board (PMAB); Notification of Upcoming Public Advisory Meeting

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-09-27

    ... Information Technology (IT) portfolio and project management, IT vendor performance management, Senior... ADMINISTRATION The President's Management Advisory Board (PMAB); Notification of Upcoming Public Advisory Meeting.... SUMMARY: The President's Management Advisory Board (PMAB), a Federal Advisory Committee established...

  15. Designing Navigation Support in Hypertext Systems Based on Navigation Patterns

    ERIC Educational Resources Information Center

    Puntambekar, Sadhana; Stylianou, Agni

    2005-01-01

    In this paper, we present two studies designed to help students navigate effectively and learn from a hypertext system, CoMPASS. Our first study ("N" = 74) involved an analysis of students' navigation patterns to group them into clusters, using a "k"-means clustering technique. Based on this analysis, navigation patterns were grouped into four…

  16. 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.

  17. 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.

  18. Terrain-Adaptive Navigation Architecture

    NASA Technical Reports Server (NTRS)

    Helmick, Daniel M.; Angelova, Anelia; Matthies, Larry H.; Helmick, Daniel M.

    2008-01-01

    A navigation system designed for a Mars rover has been designed to deal with rough terrain and/or potential slip when evaluating and executing paths. The system also can be used for any off-road, autonomous vehicles. The system enables vehicles to autonomously navigate different terrain challenges including dry river channel systems, putative shorelines, and gullies emanating from canyon walls. Several of the technologies within this innovation increase the navigation system s capabilities compared to earlier rover navigation algorithms.

  19. Coastal Piloting & Charting: Navigation 101.

    ERIC Educational Resources Information Center

    Osinski, Alison

    This curriculum guide for a beginning course on marine navigation describes marine navigation (the art of and science of determining position of a ship and its movement from one position to another in order to keep track of where the ship is and where it is going) and defines dead reckoning, piloting, electronic navigation, and celestial…

  20. The Learning Organization Implemented in Education through Advisory Committees

    ERIC Educational Resources Information Center

    Davis, Jason Lee; Davis, Harley

    2009-01-01

    Advisory committees have an established history as effective leadership components to assist in planning and evaluating vocational programs and in establishing communication links between institutions and communities. Authorities in the concepts of learning teams, such as Massachusetts Institute of Technology's Peter Senge, Harvard Business…

  1. Imaging, Navigation, and Robotics in Spine Surgery.

    PubMed

    Johnson, Norbert

    2016-04-01

    Spinal technology involves imaging, navigation, and robotics-collectively known as "image-guided therapy." Imaging coupled with navigation enhances visualization of irregular anatomy, enabling less invasive procedures. With robotics surgeons can perform quicker and safer hand movements with increased accuracy. In the 1890s, X-rays were invented by Roentgen. The first piece of X-ray equipment, the Cryptoscope, would take an image for 15 minutes, with the surgeon placing his hand in front of the beam to guide calibration; radiation exposure for both surgeon and patient was extreme. In the 1950s, fluoroscopy (C-arm) was invented. In the 1970s, computer-assisted tomography (CAT), known as CAT scan, became available; magnetic resonance imaging had its beginnings in the 1980s, and in 1985, the first robotic surgery was performed to obtain a neurosurgical biopsy specimen. The concept of navigation was introduced in the 1990s, and today's niche products for navigation came onto the market in the 2000s. PMID:27015071

  2. Imaging, Navigation, and Robotics in Spine Surgery.

    PubMed

    Johnson, Norbert

    2016-04-01

    Spinal technology involves imaging, navigation, and robotics-collectively known as "image-guided therapy." Imaging coupled with navigation enhances visualization of irregular anatomy, enabling less invasive procedures. With robotics surgeons can perform quicker and safer hand movements with increased accuracy. In the 1890s, X-rays were invented by Roentgen. The first piece of X-ray equipment, the Cryptoscope, would take an image for 15 minutes, with the surgeon placing his hand in front of the beam to guide calibration; radiation exposure for both surgeon and patient was extreme. In the 1950s, fluoroscopy (C-arm) was invented. In the 1970s, computer-assisted tomography (CAT), known as CAT scan, became available; magnetic resonance imaging had its beginnings in the 1980s, and in 1985, the first robotic surgery was performed to obtain a neurosurgical biopsy specimen. The concept of navigation was introduced in the 1990s, and today's niche products for navigation came onto the market in the 2000s.

  3. The memory structure of navigation in honeybees.

    PubMed

    Menzel, Randolf; Greggers, Uwe

    2015-06-01

    The analytical approach to navigation studies aims to identify elementary sensory motor processes that guide an animal to a remote site. This approach will be used here to characterize components of navigation in a flying insect, the honeybee. However, navigation studies need to go beyond an analysis of behavioral routines to come up with a synthesis. We will defend the concept of an active memory structure guiding navigation in bees that is best described as a mental or cognitive map. In our opinion, spatial/temporal relations of landmarks are stored in a mental map in such a way that behavioral routines such as expectation and planning, as indicated by shortcutting, are possible. We view the mental map of animals including the honeybee as an "action memory of spatial relations" rather than as a sensory representation as we humans experience it by introspection. Two components characterize the mental map, the relational representation of landmarks and the meaning of locations to the animal. As yet, there is little data to suggest that bees assign meaning to the experienced locations. To explore this possibility, further studies will be needed, whereby honeybees provide a unique model to address this question.

  4. 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.

  5. Self-navigating robot

    NASA Technical Reports Server (NTRS)

    Thompson, A. M.

    1978-01-01

    Rangefinding equipment and onboard navigation system determine best route from point to point. Research robot has two TV cameras and laser for scanning and mapping its environment. Path planner finds most direct, unobstructed route that requires minimum expenditure of energy. Distance is used as measure of energy expense, although other measures such as time or power consumption (which would depend on the topography of the path) may be used.

  6. 33 CFR 2.36 - Navigable waters of the United States, navigable waters, and territorial waters.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 33 Navigation and Navigable Waters 1 2014-07-01 2014-07-01 false Navigable waters of the United States, navigable waters, and territorial waters. 2.36 Section 2.36 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY GENERAL JURISDICTION Jurisdictional Terms § 2.36 Navigable waters of the United States, navigable...

  7. Multisensor robot navigation system

    NASA Astrophysics Data System (ADS)

    Persa, Stelian; Jonker, Pieter P.

    2002-02-01

    Almost all robot navigation systems work indoors. Outdoor robot navigation systems offer the potential for new application areas. The biggest single obstacle to building effective robot navigation systems is the lack of accurate wide-area sensors for trackers that report the locations and orientations of objects in an environment. Active (sensor-emitter) tracking technologies require powered-device installation, limiting their use to prepared areas that are relative free of natural or man-made interference sources. The hybrid tracker combines rate gyros and accelerometers with compass and tilt orientation sensor and DGPS system. Sensor distortions, delays and drift required compensation to achieve good results. The measurements from sensors are fused together to compensate for each other's limitations. Analysis and experimental results demonstrate the system effectiveness. The paper presents a field experiment for a low-cost strapdown-IMU (Inertial Measurement Unit)/DGPS combination, with data processing for the determination of 2-D components of position (trajectory), velocity and heading. In the present approach we have neglected earth rotation and gravity variations, because of the poor gyroscope sensitivities of our low-cost ISA (Inertial Sensor Assembly) and because of the relatively small area of the trajectory. The scope of this experiment was to test the feasibility of an integrated DGPS/IMU system of this type and to develop a field evaluation procedure for such a combination.

  8. 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

  9. Principles of X-ray Navigation

    SciTech Connect

    Hanson, John Eric; /SLAC

    2006-03-17

    X-ray navigation is a new concept in satellite navigation in which orientation, position and time are measured by observing stellar emissions in x-ray wavelengths. X-ray navigation offers the opportunity for a single instrument to be used to measure these parameters autonomously. Furthermore, this concept is not limited to missions in close proximity to the earth. X-ray navigation can be used on a variety of missions from satellites in low earth orbit to spacecraft on interplanetary missions. In 1997 the Unconventional Stellar Aspect Experiment (USA) will be launched as part of the Advanced Research and Global Observation Satellite (ARGOS). USA will provide the first platform for real-time experimentation in the field of x-ray navigation and also serves as an excellent case study for the design and manufacturing of space qualified systems in small, autonomous groups. Current techniques for determining the orientation of a satellite rely on observations of the earth, sun and stars in infrared, visible or ultraviolet wavelengths. It is possible to use x-ray imaging devices to provide arcsecond level measurement of attitude based on star patterns in the x-ray sky. This technique is explored with a simple simulation. Collimated x-ray detectors can be used on spinning satellites to provide a cheap and reliable measure of orientation. This is demonstrated using observations of the Crab Pulsar taken by the high Energy Astronomy Observatory (HEAO-1) in 1977. A single instrument concept is shown to be effective, but dependent on an a priori estimate of the guide star intensity and thus susceptible to errors in that estimate. A star scanner based on a differential measurement from two x-ray detectors eliminates the need for an a priori estimate of the guide star intensity. A first order model and a second order model of the two star scanner concepts are considered. Many of the stars that emit in the x-ray regime are also x-ray pulsars with frequency stability approaching a

  10. 33 CFR 209.325 - Navigation lights, aids to navigation, navigation charts, and related data policy, practices and...

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 33 Navigation and Navigable Waters 3 2010-07-01 2010-07-01 false Navigation lights, aids to... ADMINISTRATIVE PROCEDURE § 209.325 Navigation lights, aids to navigation, navigation charts, and related data... procedure to be used by all Corps of Engineers installations and activities in connection with aids...

  11. 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

    ... 33 Navigation and Navigable Waters 3 2014-07-01 2014-07-01 false Navigation lights, aids to... ADMINISTRATIVE PROCEDURE § 209.325 Navigation lights, aids to navigation, navigation charts, and related data... procedure to be used by all Corps of Engineers installations and activities in connection with aids...

  12. GPS-INS-STAR - A navigation system for the era of space autonomy

    NASA Astrophysics Data System (ADS)

    Tanabe, Toru; Kitamura, Toshiaki; Ikeuchi, Masayuki; Tanaka, Toshiyuki; Akasaka, Akira

    Experimental validation of the GPS-INS-STAR hybrid navigation system concept is performed. First, an INS-STAR hybrid navigation system is constructed on the 3-axis motion table to verify the performance of its attitude loop. A GPS-INS hybrid navigation system is then installed on a car, and its translational performance is evaluated. Each result of the experiments is verified by theoretical analysis, and its feasibility for space application is evaluated. Through the experiments, the concept of the autonomous hybrid navigation is validated, and its potential in space autonomy is indicated.

  13. Integrated navigation method based on inertial navigation system and Lidar

    NASA Astrophysics Data System (ADS)

    Zhang, Xiaoyue; Shi, Haitao; Pan, Jianye; Zhang, Chunxi

    2016-04-01

    An integrated navigation method based on the inertial navigational system (INS) and Lidar was proposed for land navigation. Compared with the traditional integrated navigational method and dead reckoning (DR) method, the influence of the inertial measurement unit (IMU) scale factor and misalignment was considered in the new method. First, the influence of the IMU scale factor and misalignment on navigation accuracy was analyzed. Based on the analysis, the integrated system error model of INS and Lidar was established, in which the IMU scale factor and misalignment error states were included. Then the observability of IMU error states was analyzed. According to the results of the observability analysis, the integrated system was optimized. Finally, numerical simulation and a vehicle test were carried out to validate the availability and utility of the proposed INS/Lidar integrated navigational method. Compared with the test result of a traditional integrated navigation method and DR method, the proposed integrated navigational method could result in a higher navigation precision. Consequently, the IMU scale factor and misalignment error were effectively compensated by the proposed method and the new integrated navigational method is valid.

  14. 75 FR 28542 - Superior Resource Advisory Committee

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-05-21

    ... orient the new Superior Resource Advisory Committee members on their roles and responsibilities. DATES... of the roles and responsibilities of the Superior Resource Advisory Committee members; Election of... Forest Service Superior Resource Advisory Committee AGENCY: Forest Service, USDA. ACTION: Notice...

  15. 75 FR 56997 - Global Markets Advisory Committee

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-09-17

    ... 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...., Washington, DC 20581, attention Office of the Secretary. Please use the title ``Global Markets...

  16. 78 FR 50040 - Technology Advisory Committee

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-08-16

    ... 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 Committee (TAC) will hold a...

  17. 75 FR 58367 - Technology Advisory Committee Meeting

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-09-24

    ... COMMISSION Technology Advisory Committee Meeting AGENCY: Commodity Futures Trading Commission (``CFTC''). ACTION: Notice of meeting of Technology Advisory Committee. SUMMARY: The Technology Advisory Committee...., Washington, DC 20581, attention: Office of the Secretary. Please use the title ``Technology...

  18. 77 FR 43064 - Meeting; Technology Advisory Committee

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-07-23

    ... 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 (``TAC'') will hold an emergency...

  19. 76 FR 776 - Technology Advisory Committee

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-01-06

    ... 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...., Washington, DC 20581, attention: Office of the Secretary. Please use the title ``Technology...

  20. 77 FR 53920 - NASA Federal Advisory Committees

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-09-04

    ... SPACE ADMINISTRATION NASA Federal Advisory Committees AGENCY: National Aeronautics and Space... amended, the National Aeronautics and Space Administration, and in accordance with the Memorandum for the... NASA's Federal advisory committees. NASA's Federal advisory committees have member vacancies from...

  1. 77 FR 50675 - Virginia Resource Advisory Committee

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-08-22

    ... Forest Service Virginia Resource Advisory Committee AGENCY: Forest Service, USDA. ACTION: Notice of meeting. SUMMARY: The Virginia Resource Advisory Committee will meet in Roanoke, Virginia. The committee... a case by case basis. Resource Advisory Committee Positions Available: Those interested in...

  2. 76 FR 12317 - Shoshone Resource Advisory Committee

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-03-07

    ... Forest Service Shoshone Resource Advisory Committee AGENCY: Forest Service, USDA. ACTION: Notice of meeting. SUMMARY: The Shoshone Resource Advisory Committee (Committee) will meet in Thermopolis, Wyoming... Broadway, Thermopolis, Wyoming. FOR FURTHER INFORMATION CONTACT: Olga Troxel, Resource Advisory...

  3. 77 FR 56607 - Shoshone Resource Advisory Committee

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-09-13

    ... Forest Service Shoshone Resource Advisory Committee AGENCY: Forest Service, USDA. ACTION: Notice of meeting. SUMMARY: The Shoshone Resource Advisory Committee (Committee) is holding a meeting on September... INFORMATION CONTACT: Olga Troxel, Resource Advisory Committee Coordinator, Shoshone National Forest...

  4. 77 FR 51512 - Allegheny Resource Advisory Committee

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-08-24

    ... Forest Service Allegheny Resource Advisory Committee AGENCY: Forest Service, USDA. ACTION: Notice of meeting. SUMMARY: The Allegheny Resource Advisory Committee will meet in Warren, Pennsylvania. The... conducted: Allegheny Resource Advisory Committee members will solicit and consider project proposals...

  5. 76 FR 41196 - Shoshone Resource Advisory Committee

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-07-13

    ... Forest Service Shoshone Resource Advisory Committee AGENCY: Forest Service, USDA. ACTION: Notice of meeting. SUMMARY: The Shoshone Resource Advisory Committee (Committee) will meet in Thermopolis, Wyoming...: Olga Troxel, Resource Advisory Committee Coordinator, Shoshone National Forest Supervisor's...

  6. 76 FR 3081 - Shoshone Resource Advisory Committee

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-01-19

    ... Forest Service Shoshone Resource Advisory Committee AGENCY: Forest Service, USDA. ACTION: Notice of meeting. SUMMARY: The Shoshone Resource Advisory Committee (Committee) will hold a conference call on.... FOR FURTHER INFORMATION CONTACT: Olga Troxel, Resource Advisory Committee Coordinator,...

  7. 76 FR 2081 - Ketchikan Resource Advisory Committee

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-01-12

    ...; ] 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 Ketchikan..., 3031 Tongass Avenue, Ketchikan, Alaska. Send written comments to Ketchikan Resource Advisory...

  8. 76 FR 22672 - Shoshone Resource Advisory Committee

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-04-22

    ... Forest Service Shoshone Resource Advisory Committee AGENCY: Forest Service, USDA. ACTION: Notice of meeting. SUMMARY: The Shoshone Resource Advisory Committee (Committee) will meet in Thermopolis, Wyoming... CONTACT: Olga Troxel, Resource Advisory Committee Coordinator, Shoshone National Forest...

  9. 76 FR 31578 - Siskiyou Resource Advisory Committee

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-06-01

    ... Forest Service Siskiyou Resource Advisory Committee AGENCY: Forest Service, USDA. ACTION: Notice of meeting. SUMMARY: The Siskiou Resource Advisory Committee will meet in Smith River, California. The..., OR Resource Advisory committee for Josephine, Coos and Curry Counties; review and recommend...

  10. 77 FR 47360 - Shoshone Resource Advisory Committee

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-08-08

    ... Forest Service Shoshone Resource Advisory Committee AGENCY: Forest Service, USDA. ACTION: Notice of meeting. SUMMARY: The Shoshone Resource Advisory Committee (Committee) will hold a conference call on.... FOR FURTHER INFORMATION CONTACT: Olga Troxel, Resource Advisory Committee Coordinator,...

  11. 33 CFR 401.53 - Obstructing navigation.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 33 Navigation and Navigable Waters 3 2013-07-01 2013-07-01 false Obstructing navigation. 401.53 Section 401.53 Navigation and Navigable Waters SAINT LAWRENCE SEAWAY DEVELOPMENT CORPORATION, DEPARTMENT OF TRANSPORTATION SEAWAY REGULATIONS AND RULES Regulations Seaway Navigation § 401.53...

  12. 33 CFR 401.53 - Obstructing navigation.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 33 Navigation and Navigable Waters 3 2014-07-01 2014-07-01 false Obstructing navigation. 401.53 Section 401.53 Navigation and Navigable Waters SAINT LAWRENCE SEAWAY DEVELOPMENT CORPORATION, DEPARTMENT OF TRANSPORTATION SEAWAY REGULATIONS AND RULES Regulations Seaway Navigation § 401.53...

  13. 33 CFR 401.35 - Navigation underway.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 33 Navigation and Navigable Waters 3 2012-07-01 2012-07-01 false Navigation underway. 401.35 Section 401.35 Navigation and Navigable Waters SAINT LAWRENCE SEAWAY DEVELOPMENT CORPORATION, DEPARTMENT OF TRANSPORTATION SEAWAY REGULATIONS AND RULES Regulations Seaway Navigation § 401.35...

  14. 33 CFR 401.35 - Navigation underway.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 33 Navigation and Navigable Waters 3 2010-07-01 2010-07-01 false Navigation underway. 401.35 Section 401.35 Navigation and Navigable Waters SAINT LAWRENCE SEAWAY DEVELOPMENT CORPORATION, DEPARTMENT OF TRANSPORTATION SEAWAY REGULATIONS AND RULES Regulations Seaway Navigation § 401.35...

  15. 33 CFR 401.35 - Navigation underway.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 33 Navigation and Navigable Waters 3 2014-07-01 2014-07-01 false Navigation underway. 401.35 Section 401.35 Navigation and Navigable Waters SAINT LAWRENCE SEAWAY DEVELOPMENT CORPORATION, DEPARTMENT OF TRANSPORTATION SEAWAY REGULATIONS AND RULES Regulations Seaway Navigation § 401.35...

  16. 33 CFR 401.35 - Navigation underway.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 33 Navigation and Navigable Waters 3 2011-07-01 2011-07-01 false Navigation underway. 401.35 Section 401.35 Navigation and Navigable Waters SAINT LAWRENCE SEAWAY DEVELOPMENT CORPORATION, DEPARTMENT OF TRANSPORTATION SEAWAY REGULATIONS AND RULES Regulations Seaway Navigation § 401.35...

  17. 33 CFR 401.53 - Obstructing navigation.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 33 Navigation and Navigable Waters 3 2010-07-01 2010-07-01 false Obstructing navigation. 401.53 Section 401.53 Navigation and Navigable Waters SAINT LAWRENCE SEAWAY DEVELOPMENT CORPORATION, DEPARTMENT OF TRANSPORTATION SEAWAY REGULATIONS AND RULES Regulations Seaway Navigation § 401.53...

  18. 33 CFR 401.35 - Navigation underway.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 33 Navigation and Navigable Waters 3 2013-07-01 2013-07-01 false Navigation underway. 401.35 Section 401.35 Navigation and Navigable Waters SAINT LAWRENCE SEAWAY DEVELOPMENT CORPORATION, DEPARTMENT OF TRANSPORTATION SEAWAY REGULATIONS AND RULES Regulations Seaway Navigation § 401.35...

  19. 33 CFR 401.53 - Obstructing navigation.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 33 Navigation and Navigable Waters 3 2012-07-01 2012-07-01 false Obstructing navigation. 401.53 Section 401.53 Navigation and Navigable Waters SAINT LAWRENCE SEAWAY DEVELOPMENT CORPORATION, DEPARTMENT OF TRANSPORTATION SEAWAY REGULATIONS AND RULES Regulations Seaway Navigation § 401.53...

  20. 33 CFR 401.53 - Obstructing navigation.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 33 Navigation and Navigable Waters 3 2011-07-01 2011-07-01 false Obstructing navigation. 401.53 Section 401.53 Navigation and Navigable Waters SAINT LAWRENCE SEAWAY DEVELOPMENT CORPORATION, DEPARTMENT OF TRANSPORTATION SEAWAY REGULATIONS AND RULES Regulations Seaway Navigation § 401.53...

  1. Control algorithms for autonomous robot navigation

    SciTech Connect

    Jorgensen, C.C.

    1985-09-20

    This paper examines control algorithm requirements for autonomous robot navigation outside laboratory environments. Three aspects of navigation are considered: navigation control in explored terrain, environment interactions with robot sensors, and navigation control in unanticipated situations. Major navigation methods are presented and relevance of traditional human learning theory is discussed. A new navigation technique linking graph theory and incidental learning is introduced.

  2. A Placement Advisory Test

    ERIC Educational Resources Information Center

    Hughes, Chris

    2010-01-01

    The primary method of placement at Portland CC (PCC) is the Compass Placement test. For the most part, students are placed correctly, but there are cases when students feel that they have been placed too low. In such cases we use our newly created Placement Advisory Test (PAT) to help us place them appropriately. (Contains 2 figures.)

  3. The UKCIS Advisory Service.

    ERIC Educational Resources Information Center

    Bingham, Archie

    1979-01-01

    Describes the free advisory service available to both users and potential users of chemical and biological databases in the United Kingdom and Ireland. Three specific areas are discussed in which queries about Chemical Abstracts Service (CAS) Registry Numbers have been received: isomers, replacing registry numbers, and mixed compounds. (JD)

  4. Fundamentals of satellite navigation

    NASA Astrophysics Data System (ADS)

    Stiller, A. H.

    The basic operating principles and capabilities of conventional and satellite-based navigation systems for air, sea, and land vehicles are reviewed and illustrated with diagrams. Consideration is given to autonomous onboard systems; systems based on visible or radio beacons; the Transit, Cicada, Navstar-GPS, and Glonass satellite systems; the physical laws and parameters of satellite motion; the definition of time in satellite systems; and the content of the demodulated GPS data signal. The GPS and Glonass data format frames are presented graphically, and tables listing the GPS and Glonass satellites, their technical characteristics, and the (past or scheduled) launch dates are provided.

  5. 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.

  6. 75 FR 26918 - Siuslaw Resource Advisory Committee

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-05-13

    ...; ] DEPARTMENT OF AGRICULTURE Forest Service Siuslaw Resource Advisory Committee AGENCY: Forest Service, USDA. ACTION: Notice of meeting. SUMMARY: The Siuslaw Resource Advisory Committee will meet in Corvallis,...

  7. 75 FR 39910 - Dixie Resource Advisory Committee

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-07-13

    ...; ] DEPARTMENT OF AGRICULTURE Forest Service Dixie Resource Advisory Committee AGENCY: Forest Service, USDA. ACTION: Notice of meetings. SUMMARY: The Dixie Resource Advisory Committee will meet in Cedar City,...

  8. Learning for Autonomous Navigation

    NASA Technical Reports Server (NTRS)

    Angelova, Anelia; Howard, Andrew; Matthies, Larry; Tang, Benyang; Turmon, Michael; Mjolsness, Eric

    2005-01-01

    Robotic ground vehicles for outdoor applications have achieved some remarkable successes, notably in autonomous highway following (Dickmanns, 1987), planetary exploration (1), and off-road navigation on Earth (1). Nevertheless, major challenges remain to enable reliable, high-speed, autonomous navigation in a wide variety of complex, off-road terrain. 3-D perception of terrain geometry with imaging range sensors is the mainstay of off-road driving systems. However, the stopping distance at high speed exceeds the effective lookahead distance of existing range sensors. Prospects for extending the range of 3-D sensors is strongly limited by sensor physics, eye safety of lasers, and related issues. Range sensor limitations also allow vehicles to enter large cul-de-sacs even at low speed, leading to long detours. Moreover, sensing only terrain geometry fails to reveal mechanical properties of terrain that are critical to assessing its traversability, such as potential for slippage, sinkage, and the degree of compliance of potential obstacles. Rovers in the Mars Exploration Rover (MER) mission have got stuck in sand dunes and experienced significant downhill slippage in the vicinity of large rock hazards. Earth-based off-road robots today have very limited ability to discriminate traversable vegetation from non-traversable vegetation or rough ground. It is impossible today to preprogram a system with knowledge of these properties for all types of terrain and weather conditions that might be encountered.

  9. Space Shuttle Orbiter descent navigation

    NASA Technical Reports Server (NTRS)

    Montez, M. N.; Madden, M. F.

    1982-01-01

    The entry operational sequence (OPS 3) begins approximately 2 hours prior to the deorbit maneuver and continues through atmospheric entry, terminal area energy management (TAEM), approach and landing, and rollout. During this flight phase, the navigation state vector is estimated by the Space Shuttle Orbiter onboard navigation system. This estimate is computed using a six-element sequential Kalman filter, which blends inertial measurement unit (IMU) delta-velocity data with external navaid data. The external navaids available to the filter are tactical air navigation (TACAN), barometric altimeter, and microwave scan beam landing system (MSBLS). Attention is given to the functional design of the Orbiter navigation system, the descent navigation sensors and measurement processing, predicted Kalman gains, correlation coefficients, and current flights navigation performance.

  10. Shifting the Inertial Navigation Paradigm with MEMS Technology

    NASA Technical Reports Server (NTRS)

    Crain, Timothy; Brady, Tye; Bishop, Robert H.

    2010-01-01

    Why don t you use MEMS? is one of the most common questions posed to navigation systems engineers designing inertial navigation solutions in the modern era. The question stems from a general understanding that great strides have been made in terrestrial MEMS accelerometers and attitude rate sensors in terms of accuracy, mass, and power. Yet, when compared on a unit-to-unit basis, MEMS devices do not provide comparable performance (accuracy) to navigation grade sensors. This paper will propose a paradigm shift where the comparison in performance is between multiple MEMS devices and a single navigation grade sensor. The concept is that systematically, a sufficient number of MEMS sensors may mathematically provide comparable performance to a single navigation grade device and be competitive in terms power and mass allocations when viewed on a systems level. The implication is that both inertial navigation system design and fault detection, identification, and recovery could benefit from a system of MEMS devices in the same way that swarm sensing has benefited Earth observation and astronomy. A survey of the state of the art in inertial sensor accuracy scaled by mass and power will be provided to show the specific error in MEMS and navigation graded devices, a mathematical comparison of multi-unit to single-unit sensor errors will be developed, and preliminary applications to Constellation vehicles will be explored.

  11. Shifting the Intertial Navigation Paradigm with the MEMS Technology

    NASA Technical Reports Server (NTRS)

    Crain, Timothy P., II; Bishop, Robert H.; Brady, Tye

    2010-01-01

    "Why don't you use MEMS?" is of the most common questions posed to navigation systems engineers designing inertial navigation solutions in the modern era. The question stems from a general understanding that great strides have been made in terrestrial MEMS accelerometers and attitude rate sensors in terms of accuracy, mass, and power. Yet, when compared on a unit-to-unit basis, MEMS devices do not provide comparable performance (accuracy) to navigation grade sensors in several key metrics. This paper will propose a paradigm shift where the comparison in performance is between multiple MEMS devices and a single navigation grade sensor. The concept is that systematically, a sufficient number of MEMS sensors may mathematically provide comparable performance to a single navigation grade device and be competitive in terms power and mass allocations when viewed on a systems level. The implication is that both inertial navigation system design and fault detection, identification, and recovery could benefit from a system of MEMS devices in the same way that swarm sensing has benefited Earth observation and astronomy. A survey of the state of the art in inertial sensor accuracy scaled by mass and power will be provided to show the scaled error in MEMS and navigation graded devices, a mathematical comparison of multi-unit to single-unit sensor errors will be developed, and preliminary application to an Orion lunar skip atmospheric entry trajectory will be explored.

  12. 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 Navigable Waters CORPS OF ENGINEERS, DEPARTMENT OF THE ARMY, DEPARTMENT OF DEFENSE NAVIGATION...

  13. 33 CFR 207.185 - Taylors Bayou, Tex., Beaumont Navigation District Lock; use, administration, and navigation.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 33 Navigation and Navigable Waters 3 2012-07-01 2012-07-01 false Taylors Bayou, Tex., Beaumont Navigation District Lock; use, administration, and navigation. 207.185 Section 207.185 Navigation and Navigable Waters CORPS OF ENGINEERS, DEPARTMENT OF THE ARMY, DEPARTMENT OF DEFENSE NAVIGATION...

  14. 33 CFR 207.185 - Taylors Bayou, Tex., Beaumont Navigation District Lock; use, administration, and navigation.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 33 Navigation and Navigable Waters 3 2014-07-01 2014-07-01 false Taylors Bayou, Tex., Beaumont Navigation District Lock; use, administration, and navigation. 207.185 Section 207.185 Navigation and Navigable Waters CORPS OF ENGINEERS, DEPARTMENT OF THE ARMY, DEPARTMENT OF DEFENSE NAVIGATION...

  15. 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 Navigable Waters CORPS OF ENGINEERS, DEPARTMENT OF THE ARMY, DEPARTMENT OF DEFENSE NAVIGATION...

  16. 33 CFR 207.185 - Taylors Bayou, Tex., Beaumont Navigation District Lock; use, administration, and navigation.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 33 Navigation and Navigable Waters 3 2013-07-01 2013-07-01 false Taylors Bayou, Tex., Beaumont Navigation District Lock; use, administration, and navigation. 207.185 Section 207.185 Navigation and Navigable Waters CORPS OF ENGINEERS, DEPARTMENT OF THE ARMY, DEPARTMENT OF DEFENSE NAVIGATION...

  17. Navigation, robotics, and intraoperative imaging in spinal surgery.

    PubMed

    Ringel, Florian; Villard, Jimmy; Ryang, Yu-Mi; Meyer, Bernhard

    2014-01-01

    Spinal navigation is a technique gaining increasing popularity. Different approaches as CT-based or intraoperative imaging-based navigation are available, requiring different methods of patient registration, bearing certain advantages and disadvantages. So far, a large number of studies assessed the accuracy of pedicle screw implantation in the cervical, thoracic, and lumbar spine, elucidating the advantages of image guidance. However, a clear proof of patient benefit is missing, so far. Spinal navigation is closely related to intraoperative 3D imaging providing an imaging dataset for navigational use and the opportunity for immediate intraoperative assessment of final screw position giving the option of immediate screw revision if necessary. Thus, postoperative imaging and a potential revision surgery for screw correction become dispensable.Different concept of spinal robotics as the DaVinci system and SpineAssist are under investigation.

  18. Inertial navigation system for directional surveying

    SciTech Connect

    Kohler, S.M.

    1982-09-01

    A Wellbore Inertial Navigation System (WINS) was developed and tested. Developed for directional surveying of geothermal, oil, and gas wells, the system uses gyros and accelerometers to obtain survey errors of less than 10 ft (approx. 3 m) in a 10,000-ft (approx. 300-m) well. The tool, which communicates with a computer at the surface, is 4 in. (approx. 10 cm) in diameter and 20 ft (approx. 6.1 m) long. The concept and hardware is based on a system developed by Sandia for flight vehicles.

  19. 75 FR 1381 - Science Advisory Board Staff Office; Notification of a Public Teleconference of the Clean Air...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-01-11

    ... FR 16436). CASAC advisory reports on this subject are available on the CASAC Web site at http..._cr_fr.html ). Since the proposed standards are based on the scientific record from the 2008... navigation bar. The proposed rule is available at...

  20. 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.

  1. Dynamic Transportation Navigation

    NASA Astrophysics Data System (ADS)

    Meng, Xiaofeng; Chen, Jidong

    Miniaturization of computing devices, and advances in wireless communication and sensor technology are some of the forces that are propagating computing from the stationary desktop to the mobile outdoors. Some important classes of new applications that will be enabled by this revolutionary development include intelligent traffic management, location-based services, tourist services, mobile electronic commerce, and digital battlefield. Some existing application classes that will benefit from the development include transportation and air traffic control, weather forecasting, emergency response, mobile resource management, and mobile workforce. Location management, i.e., the management of transient location information, is an enabling technology for all these applications. In this chapter, we present the applications of moving objects management and their functionalities, in particular, the application of dynamic traffic navigation, which is a challenge due to the highly variable traffic state and the requirement of fast, on-line computations.

  2. Comprehension of Navigation Directions

    NASA Technical Reports Server (NTRS)

    Healy, Alice F.; Schneider, Vivian I.

    2002-01-01

    Subjects were shown navigation instructions varying in length directing them to move in a space represented by grids on a computer screen. They followed the instructions by clicking on the grids in the locations specified. Some subjects repeated back the instructions before following them, some did not, and others repeated back the instructions in reduced form, including only the critical words. The commands in each message were presented simultaneously for half of the subjects and sequentially for the others. For the longest messages, performance was better on the initial commands and worse on the final commands with simultaneous than with sequential presentation. Instruction repetition depressed performance, but reduced repetition removed this disadvantage. Effects of presentation format were attributed to visual scanning strategies. The advantage for reduced repetition was attributable either to enhanced visual scanning or to reduced output interference. A follow-up study with auditory presentation supported the visual scanning explanation.

  3. Stardust Navigation Covariance Analysis

    NASA Technical Reports Server (NTRS)

    Menon, Premkumar R.

    2000-01-01

    The Stardust spacecraft was launched on February 7, 1999 aboard a Boeing Delta-II rocket. Mission participants include the National Aeronautics and Space Administration (NASA), the Jet Propulsion Laboratory (JPL), Lockheed Martin Astronautics (LMA) and the University of Washington. The primary objective of the mission is to collect in-situ samples of the coma of comet Wild-2 and return those samples to the Earth for analysis. Mission design and operational navigation for Stardust is performed by the Jet Propulsion Laboratory (JPL). This paper will describe the extensive JPL effort in support of the Stardust pre-launch analysis of the orbit determination component of the mission covariance study. A description of the mission and it's trajectory will be provided first, followed by a discussion of the covariance procedure and models. Predicted accuracy's will be examined as they relate to navigation delivery requirements for specific critical events during the mission. Stardust was launched into a heliocentric trajectory in early 1999. It will perform an Earth Gravity Assist (EGA) on January 15, 2001 to acquire an orbit for the eventual rendezvous with comet Wild-2. The spacecraft will fly through the coma (atmosphere) on the dayside of Wild-2 on January 2, 2004. At that time samples will be obtained using an aerogel collector. After the comet encounter Stardust will return to Earth when the Sample Return Capsule (SRC) will separate and land at the Utah Test Site (UTTR) on January 15, 2006. The spacecraft will however be deflected off into a heliocentric orbit. The mission is divided into three phases for the covariance analysis. They are 1) Launch to EGA, 2) EGA to Wild-2 encounter and 3) Wild-2 encounter to Earth reentry. Orbit determination assumptions for each phase are provided. These include estimated and consider parameters and their associated a-priori uncertainties. Major perturbations to the trajectory include 19 deterministic and statistical maneuvers

  4. 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

  5. Aerospace safety advisory panel

    NASA Technical Reports Server (NTRS)

    1994-01-01

    This report from the Aerospace Safety Advisory Panel (ASAP) contains findings, recommendations, and supporting material concerning safety issues with the space station program, the space shuttle program, aeronautics research, and other NASA programs. Section two presents findings and recommendations, section three presents supporting information, and appendices contain data about the panel membership, the NASA response to the March 1993 ASAP report, and a chronology of the panel's activities during the past year.

  6. Ash cloud aviation advisories

    SciTech Connect

    Sullivan, T.J.; Ellis, J.S.; Schalk, W.W.; Nasstrom, J.S.

    1992-06-25

    During the recent (12--22 June 1991) Mount Pinatubo volcano eruptions, the US Air Force Global Weather Central (AFGWC) requested assistance of the US Department of Energy`s Atmospheric Release Advisory Capability (ARAC) in creating volcanic ash cloud aviation advisories for the region of the Philippine Islands. Through application of its three-dimensional material transport and diffusion models using AFGWC meteorological analysis and forecast wind fields ARAC developed extensive analysis and 12-hourly forecast ash cloud position advisories extending to 48 hours for a period of five days. The advisories consisted of ``relative`` ash cloud concentrations in ten layers (surface-5,000 feet, 5,000--10,000 feet and every 10,000 feet to 90,000 feet). The ash was represented as a log-normal size distribution of 10--200 {mu}m diameter solid particles. Size-dependent ``ashfall`` was simulated over time as the eruption clouds dispersed. Except for an internal experimental attempt to model one of the Mount Redoubt, Alaska, eruptions (12/89), ARAC had no prior experience in modeling volcanic eruption ash hazards. For the cataclysmic eruption of 15--16 June, the complex three-dimensional atmospheric structure of the region produced dramatically divergent ash cloud patterns. The large eruptions (> 7--10 km) produced ash plume clouds with strong westward transport over the South China Sea, Southeast Asia, India and beyond. The low-level eruptions (< 7 km) and quasi-steady-state venting produced a plume which generally dispersed to the north and east throughout the support period. Modeling the sequence of eruptions presented a unique challenge. Although the initial approach proved viable, further refinement is necessary and possible. A distinct need exists to quantify eruptions consistently such that ``relative`` ash concentrations relate to specific aviation hazard categories.

  7. Navigation: Traveling the Water Highways.

    ERIC Educational Resources Information Center

    Fisher, Marion; Lane, Jack

    1995-01-01

    One of the most important yet often overlooked uses of water is as a method of transportation or, navigation. Presents an activity to help students understand the importance of water as a critical, renewable, and natural resource for navigational use. Lists the learning objective, materials, and procedure for the activity. Also includes a foldout.…

  8. Navigating the Seas of Policy.

    ERIC Educational Resources Information Center

    Cunningham, Stephanie; Kennedy, Steve; McAlonan, Susan; Hotchkiss, Heather

    As the sun, moon, and stars helped sea captains to navigate, policy (defined as a formalized idea to encourage change) indicates general direction and speed but does not establish a specific approach to achieve implementation. Formal and informal policies have advantages and disadvantages. These are steps in navigating policy formation: identify…

  9. Introductory Course on Satellite Navigation

    ERIC Educational Resources Information Center

    Giger, Kaspar; Knogl, J. Sebastian

    2012-01-01

    Satellite navigation is widely used for personal navigation and more and more in precise and safety-critical applications. Thus, the subject is suited for attracting the interest of young people in science and engineering. The practical applications allow catching the students' attention for the theoretical background. Educational material on the…

  10. 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.

  11. 78 FR 70317 - Invasive Species Advisory Committee

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-11-25

    ... Office of the Secretary Invasive Species Advisory Committee AGENCY: Office of the Secretary, Interior. ACTION: Notice of Public Meeting (via Teleconference) of the Invasive Species Advisory Committee. SUMMARY... Invasive Species Advisory Committee. The purpose of the Advisory Committee is to provide advice to...

  12. 78 FR 77443 - Electricity Advisory Committee

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-12-23

    ... Electricity Advisory Committee AGENCY: Office of Electricity Delivery and Energy Reliability, Department of... Electricity Advisory Committee (EAC). The Federal Advisory Committee Act (Pub. L. 92-463, 86 Stat. 770.../oe/services/electricity-advisory-committee-eac . FOR FURTHER INFORMATION CONTACT: Matthew...

  13. 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...

  14. 77 FR 59627 - Homeland Security Advisory Council

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-09-28

    ... SECURITY Homeland Security Advisory Council AGENCY: The Office of Policy, DHS. ACTION: Notice of open teleconference federal advisory committee meeting. SUMMARY: The Homeland Security Advisory Council (HSAC) will... line of the message. Fax: (202) 282-9207. Mail: Homeland Security Advisory Council, Department...

  15. 75 FR 53707 - Homeland Security Advisory Council

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-09-01

    ... SECURITY Homeland Security Advisory Council AGENCY: The Office of Policy, DHS. ACTION: Notice of Open Teleconference Federal Advisory Committee Meeting. SUMMARY: The Homeland Security Advisory Council (HSAC) will...: Homeland Security Advisory Council, Department of Homeland Security, Mailstop 0850, 245 Murray Lane,...

  16. 75 FR 59278 - Homeland Security Advisory Council

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-09-27

    ... SECURITY Homeland Security Advisory Council AGENCY: The Office of Policy, DHS. ACTION: Notice of Closed Federal Advisory Committee Meeting. SUMMARY: The Homeland Security Advisory Council (HSAC) will meet on... message. Fax: (202) 282-9207. Mail: Homeland Security Advisory Council, Department of Homeland...

  17. 77 FR 64532 - Homeland Security Advisory Council

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-10-22

    ... SECURITY Homeland Security Advisory Council AGENCY: The Office of Policy, DHS. ACTION: Notice of open teleconference Federal advisory committee meeting. SUMMARY: The Homeland Security Advisory Council (HSAC) will... in the subject line of the message. Fax: (202) 282-9207 Mail: Homeland Security Advisory...

  18. 75 FR 26782 - Homeland Security Advisory Council

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-05-12

    ... SECURITY Homeland Security Advisory Council AGENCY: The Office of Policy, DHS. ACTION: Notice of Open Teleconference Federal Advisory Committee Meeting. SUMMARY: The Homeland Security Advisory Council (HSAC) will... (Homeland Security) Review Advisory Committee. DATE: The HSAC conference call will take place from 4 p.m....

  19. 75 FR 2880 - Homeland Security Advisory Council

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-01-19

    ... SECURITY Homeland Security Advisory Council AGENCY: The Office of Policy, DHS. ACTION: Committee management; Notice of partially closed federal advisory committee meeting. SUMMARY: The Homeland Security Advisory.... E-mail: HSAC@dhs.gov . Fax: 202-282-9207. Mail: Homeland Security Advisory Council, 1100...

  20. 76 FR 55079 - Homeland Security Advisory Council

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-09-06

    ... SECURITY Homeland Security Advisory Council AGENCY: The Office of Policy, DHS. ACTION: Notice of Open Teleconference Federal Advisory Committee Meeting. SUMMARY: The Homeland Security Advisory Council (HSAC) will... subject line of the message. Fax: (202) 282-9207. Mail: Homeland Security Advisory Council, Department...

  1. 39 CFR 310.6 - Advisory opinions.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ..., 475 L'Enfant Plaza SW., Washington, DC 20260-1100. A numbered series of advisory opinions is available... 39 Postal Service 1 2010-07-01 2010-07-01 false Advisory opinions. 310.6 Section 310.6 Postal... PRIVATE EXPRESS STATUTES § 310.6 Advisory opinions. An advisory opinion on any question arising under...

  2. 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.

  3. Vision assisted aircraft lateral navigation

    NASA Astrophysics Data System (ADS)

    Mohideen, Mohamed Ibrahim; Ramegowda, Dinesh; Seiler, Peter

    2013-05-01

    Surface operation is currently one of the least technologically equipped phases of aircraft operation. The increased air traffic congestion necessitates more aircraft operations in degraded weather and at night. The traditional surface procedures worked well in most cases as airport surfaces have not been congested and airport layouts were less complex. Despite the best efforts of FAA and other safety agencies, runway incursions continue to occur frequently due to incorrect surface operation. Several studies conducted by FAA suggest that pilot induced error contributes significantly to runway incursions. Further, the report attributes pilot's lack of situational awareness - local (e.g., minimizing lateral deviation), global (e.g., traffic in the vicinity) and route (e.g., distance to next turn) - to the problem. An Enhanced Vision System (EVS) is one concept that is being considered to resolve these issues. These systems use on-board sensors to provide situational awareness under poor visibility conditions. In this paper, we propose the use of an Image processing based system to estimate the aircraft position and orientation relative to taxiway markings to use as lateral guidance aid. We estimate aircraft yaw angle and lateral offset from slope of the taxiway centerline and horizontal position of vanishing line. Unlike automotive applications, several cues such as aircraft maneuvers along assigned route with minimal deviations, clear ground markings, even taxiway surface, limited aircraft speed are available and enable us to implement significant algorithm optimizations. We present experimental results to show high precision navigation accuracy with sensitivity analysis with respect to camera mount, optics, and image processing error.

  4. 77 FR 55863 - NASA Advisory Council; Science Committee; Earth Science Subcommittee; Applied Sciences Advisory...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-09-11

    ... SPACE ADMINISTRATION NASA Advisory Council; Science Committee; Earth Science Subcommittee; Applied Sciences Advisory Group Meeting AGENCY: National Aeronautics and Space Administration. ACTION: Notice of... Aeronautics and Space Administration (NASA) announces a meeting of the Applied Science Advisory Group....

  5. 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

    ... Clean Air Scientific Advisory Committee (CASAC) Ambient Air Monitoring & Methods Subcommittee (AAMMS or... AGENCY Science Advisory Board Staff Office; Notification of a Clean Air Scientific Advisory Committee (CASAC); Ambient Air Methods and Monitoring Subcommittee (AAMMS); Meeting and Public...

  6. 76 FR 70425 - Federal Advisory Committee; Defense Intelligence Agency (DIA) Advisory Board; Closed Meeting

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-11-14

    ... Office of the Secretary Federal Advisory Committee; Defense Intelligence Agency (DIA) Advisory Board... discussions of classified information relating to DIA's intelligence operations including its support to... Advisory Board to discuss DIA operations and capabilities in support of current intelligence...

  7. 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

    ... SPACE ADMINISTRATION NASA International Space Station Advisory Committee and the Aerospace Safety... International Space Station Advisory Committee and the Aerospace Safety Advisory Panel. The purpose of this... consideration by NASA for Commercial Resupply Services for the International Space Station (ISS),...

  8. 78 FR 295 - Federal Advisory Committee; Defense Intelligence Agency (DIA) Advisory Board; Closed Meeting

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-01-03

    ... of the Secretary Federal Advisory Committee; Defense Intelligence Agency (DIA) Advisory Board; Closed... discussions of classified information relating to DIA's intelligence operations including its support to... the Advisory Board to discuss DIA operations and capabilities in support of current...

  9. 77 FR 2277 - Federal Advisory Committee; Defense Intelligence Agency (DIA) Advisory Board; Closed Meeting

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-01-17

    ... of the Secretary Federal Advisory Committee; Defense Intelligence Agency (DIA) Advisory Board; Closed... discussions of classified information relating to DIA's intelligence operations including its support to... Advisory Board to discuss DIA operations and capabilities in support of current intelligence...

  10. 77 FR 62222 - Federal Advisory Committee; Defense Intelligence Agency (DIA) Advisory Board; Closed Meeting

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-10-12

    ... of the Secretary Federal Advisory Committee; Defense Intelligence Agency (DIA) Advisory Board; Closed... discussions of classified information relating to DIA's intelligence operations including its support to... the Advisory Board to discuss DIA operations and capabilities in support of current...

  11. The navigation toolkit

    NASA Technical Reports Server (NTRS)

    Rich, William F.; Strom, Stephen W.

    1994-01-01

    This report summarizes the experience of the authors in managing, designing, and implementing an object-oriented applications framework for orbital navigation analysis for the Flight Design and Dynamics Department of the Rockwell Space Operations Company in Houston, in support of the Mission Operations Directorate of NASA's Johnson Space Center. The 8 person year project spanned 1.5 years and produced 30,000 lines of C++ code, replacing 150,000 lines of Fortran/C. We believe that our experience is important because it represents a 'second project' experience and generated real production-quality code - it was not a pilot. The project successfully demonstrated the use of 'continuous development' or rapid prototyping techniques. Use of formal methods and executable models contributed to the quality of the code. Keys to the success of the project were a strong architectural vision and highly skilled workers. This report focuses on process and methodology, and not on a detailed design description of the product. But the true importance of the object-oriented paradigm is its liberation of the developer to focus on the problem rather than the means used to solve the problem.

  12. 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.

  13. 14 CFR 121.389 - Flight navigator and specialized navigation equipment.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... 14 Aeronautics and Space 3 2013-01-01 2013-01-01 false Flight navigator and specialized navigation....389 Flight navigator and specialized navigation equipment. (a) No certificate holder may operate an... flight navigator certificate; or (2) Specialized means of navigation approved in accordance with §...

  14. 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....389 Flight navigator and specialized navigation equipment. (a) No certificate holder may operate an... flight navigator certificate; or (2) Specialized means of navigation approved in accordance with §...

  15. 14 CFR 121.389 - Flight navigator and specialized navigation equipment.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... 14 Aeronautics and Space 3 2012-01-01 2012-01-01 false Flight navigator and specialized navigation....389 Flight navigator and specialized navigation equipment. (a) No certificate holder may operate an... flight navigator certificate; or (2) Specialized means of navigation approved in accordance with §...

  16. 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....389 Flight navigator and specialized navigation equipment. (a) No certificate holder may operate an... flight navigator certificate; or (2) Specialized means of navigation approved in accordance with §...

  17. 14 CFR 121.389 - Flight navigator and specialized navigation equipment.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... 14 Aeronautics and Space 3 2014-01-01 2014-01-01 false Flight navigator and specialized navigation....389 Flight navigator and specialized navigation equipment. (a) No certificate holder may operate an... flight navigator certificate; or (2) Specialized means of navigation approved in accordance with §...

  18. 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).

  19. 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.

  20. 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.

  1. Navigable networks as Nash equilibria of navigation games

    NASA Astrophysics Data System (ADS)

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

    2015-07-01

    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.

  2. 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.

  3. NASA tracking ship navigation systems

    NASA Technical Reports Server (NTRS)

    Mckenna, J. J.

    1976-01-01

    The ship position and attitude measurement system that was installed aboard the tracking ship Vanguard is described. An overview of the entire system is given along with a description of how precise time and frequency is utilized. The instrumentation is broken down into its basic components. Particular emphasis is given to the inertial navigation system. Each navigation system used, a mariner star tracker, navigation satellite system, Loran C and OMEGA in conjunction with the inertial system is described. The accuracy of each system is compared along with their limitations.

  4. Navigation/Prop Software Suite

    NASA Technical Reports Server (NTRS)

    Bruchmiller, Tomas; Tran, Sanh; Lee, Mathew; Bucker, Scott; Bupane, Catherine; Bennett, Charles; Cantu, Sergio; Kwong, Ping; Propst, Carolyn

    2012-01-01

    Navigation (Nav)/Prop software is used to support shuttle mission analysis, production, and some operations tasks. The Nav/Prop suite containing configuration items (CIs) resides on IPS/Linux workstations. It features lifecycle documents, and data files used for shuttle navigation and propellant analysis for all flight segments. This suite also includes trajectory server, archive server, and RAT software residing on MCC/Linux workstations. Navigation/Prop represents tool versions established during or after IPS Equipment Rehost-3 or after the MCC Rehost.

  5. Experiment D009: Simple navigation

    NASA Technical Reports Server (NTRS)

    Silva, R. M.; Jorris, T. R.; Vallerie, E. M., III

    1971-01-01

    Space position-fixing techniques have been investigated by collecting data on the observable phenomena of space flight that could be used to solve the problem of autonomous navigation by the use of optical data and manual computations to calculate the position of a spacecraft. After completion of the developmental and test phases, the product of the experiment would be a manual-optical technique of orbital space navigation that could be used as a backup to onboard and ground-based spacecraft-navigation systems.

  6. Retrodirective-Optical-Transponder Concept

    NASA Technical Reports Server (NTRS)

    Dickinson, R. M.

    1985-01-01

    Pointing errors and optical imperfections automatically corrected. Coherent optical transponder employs nearly-degenerate four-wave mixing in nonlinear optical element to produce signal traveling back toward source of incoming signal. Return signal modulated for communication, navigation, data transmission, tracking, and identification. When perfected concept finds important civilian and military applications in line-of-sight tracking, communication and identification.

  7. 76 FR 7551 - Advisory Committee on Student Financial Assistance: Hearing

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-02-10

    ... Advisory Committee on Student Financial Assistance: Hearing AGENCY: Advisory Committee on Student Financial... Student Financial Assistance (the Advisory Committee). This notice also describes the functions of the.... Alison Bane, Associate Director of Government Relations, Advisory Committee on Student...

  8. 77 FR 2539 - Meetings of the Small Communities Advisory Subcommittee and the Local Government Advisory Committee

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-01-18

    ... if the number of requests for appearances requires it. The Local Government Advisory Committee (LGAC... requests for appearances requires it. Dates and Addresses: The Small Communities Advisory...

  9. NES: How to Navigate the Virtual Campus

    NASA Video Gallery

    This video describes how to navigate the NASA Explorer Schools public website. Information includes descriptions of the left navigation, using the breadcrumbs, understanding the various announcemen...

  10. 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.

  11. Navigating "Assisted Dying".

    PubMed

    Schipper, Harvey

    2016-02-01

    Carter is a bellwether decision, an adjudication on a narrow point of law whose implications are vast across society, and whose impact may not be realized for years. Coupled with Quebec's Act Respecting End-of-life Care it has sharply changed the legal landscape with respect to actively ending a person's life. "Medically assisted dying" will be permitted under circumstances, and through processes, which have yet to be operationally defined. This decision carries with it moral assumptions, which mean that it will be difficult to reach a unifying consensus. For some, the decision and Act reflect a modern acknowledgement of individual autonomy. For others, allowing such acts is morally unspeakable. Having opened the Pandora's Box, the question becomes one of navigating a tolerable societal path. I believe it is possible to achieve a workable solution based on the core principle that "medically assisted dying" should be a very rarely employed last option, subject to transparent ongoing review, specifically as to why it was deemed necessary. My analysis is based on 1. The societal conditions in which have fostered demand for "assisted dying", 2. Actions in other jurisdictions, 3. Carter and Quebec Bill 52, 4. Political considerations, 5. Current medical practice. Leading to a series of recommendations regarding. 1. Legislation and regulation, 2. The role of professional regulatory agencies, 3. Medical professions education and practice, 4. Public education, 5. Health care delivery and palliative care. Given the burden of public opinion, and the legal steps already taken, a process for assisted-dying is required. However, those legal and regulatory steps should only be considered a necessary and defensive first step in a two stage process. The larger goal, the second step, is to drive the improvement of care, and thus minimize assisted-dying. PMID:27169205

  12. Bore hole navigator

    SciTech Connect

    Hoffman, G.J.

    1987-09-29

    A bore hole navigator is described comprising a two axis platform for lowering down a bore hole on a cable with its longitudinal axis parallel to the local bore hole direction. The two axis platform has an outer gimbal, bearing supported on the outer gimbal axis for rotation about the longitudinal axis of the platform, and an inner gimbal axis orthogonal the the outer gimbal axis. The inner gimbal axis has multiple axis segments spaced along the longitudinal axis of the platform and each bearing supported on the outer gimbal. The inner gimbal axis segment has a two axis gyro mounted thereon with its spin axis orthogonal to the respective inner gimbal axis segment, a first gyro sensitive axis parallel to the respective inner gimbal axis segment and a second gyro sensitive axis orthogonal to the spin axis. The second inner gimbal axis segment has a pitch torquer thereon operative to provide a controllable torque about the respective inner gimbal axis segment. The third inner gimbal axis segment has a pitch resolver thereon operative to measure rotation of the respective inner gimbal axis segment with respect to the outer gimbal. The first, second and third inner gimbal axis segments are coupled to rotate together. The outer gimbal has a yaw torquer thereon to provide a controllable torque about the outer gimbal axis, and a yaw resolver thereon to measure rotation of the outer gimbal about the outer gimbal axis. The outer gimbal also has a single axis accelerometer therein having its sensitive axis orthogonal to the outer gimbal axis and the inner gimbal axis segments.

  13. 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.

  14. 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.

  15. Navigating the Rockets Educator Guide

    NASA Video Gallery

    In this brief video overview, learn how to navigate the Rockets Educator Guide. Get a glimpse of the resources available in the guide, including a pictorial history, an overview of the physics cont...

  16. Potential applications of satellite navigation

    NASA Astrophysics Data System (ADS)

    Schaenzer, G.

    The applicability of Navstar GPS to civil air navigation is discussed. The accuracy of current air-navigation systems is reviewed; the basic principle and accuracy of GPS navigation are characterized; the relatively low cost of GPS receiving equipment is pointed out; and particular attention is given to hybrid systems combining GPS with inertial navigation. It is predicted that CAT III landings will be possible using such hybrid systems when the GPS satellites are fully deployed, even without access to the military GPS code. Techniques for GPS-based precision landings, reduced-noise landings, landings on parallel runways, control of taxiing maneuvers, and aircraft-based geodetic measurements are briefly described and illustrated with diagrams.

  17. Almanac services for celestial navigation

    NASA Astrophysics Data System (ADS)

    Nelmes, S.; Whittaker, J.

    2015-08-01

    Celestial navigation remains a vitally important back up to Global Navigation Satellite Systems (GNSS) and relies on the use of almanac services. HM Nautical Almanac Office (HMNAO) provides a number of these services. The printed book, The Nautical Almanac, produced yearly and now available as an electronic publication, is continuously being improved, making use of the latest ideas and ephemerides to provide the user with their required data. HMNAO also produces NavPac, a software package that assists the user in calculating their position as well as providing additional navigational and astronomical tools. A new version of NavPac will be released in 2015 that will improve the user experience. The development of applications for mobile devices is also being considered. HMNAO continues to combine the latest improvements and theories of astrometry with the creation of books and software that best meet the needs of celestial navigation users.

  18. SEXTANT: Navigating by Cosmic Beacon

    NASA Video Gallery

    Imagine a technology that would allow space travelers to transmit gigabytes of data per second over interplanetary distances or to navigate to Mars and beyond using powerful beams of light emanatin...

  19. Navigator program: exploring new worlds

    NASA Technical Reports Server (NTRS)

    Lawson, Peter R.

    2006-01-01

    NASA's Navigator Program is a series of interrelated missions to explore and characterize new worlds. Each successive mission provides an essential step toward the ultimate goal of discovering habitable planets and life around nearby stars.

  20. The navigation of space probes

    NASA Technical Reports Server (NTRS)

    Fliegel, H. F.; Ohandley, D. A.; Zielenbach, J. W.

    1974-01-01

    A new navigational method combining electronic measurement procedures and celestial mechanics makes it possible to conduct a space probe very close to a desired point in the neighborhood of a remote planet. Approaches for the determination of the position of the space probe in space are discussed, giving attention to the effects of errors in the employed data. The application of the navigational methods in a number of space missions is also considered.

  1. Visual Navigation in Nocturnal Insects.

    PubMed

    Warrant, Eric; Dacke, Marie

    2016-05-01

    Despite their tiny eyes and brains, nocturnal insects have evolved a remarkable capacity to visually navigate at night. Whereas some use moonlight or the stars as celestial compass cues to maintain a straight-line course, others use visual landmarks to navigate to and from their nest. These impressive abilities rely on highly sensitive compound eyes and specialized visual processing strategies in the brain. PMID:27053732

  2. FLASH LIDAR Based Relative Navigation

    NASA Technical Reports Server (NTRS)

    Brazzel, Jack; Clark, Fred; Milenkovic, Zoran

    2014-01-01

    Relative navigation remains the most challenging part of spacecraft rendezvous and docking. In recent years, flash LIDARs, have been increasingly selected as the go-to sensors for proximity operations and docking. Flash LIDARS are generally lighter and require less power that scanning Lidars. Flash LIDARs do not have moving parts, and they are capable of tracking multiple targets as well as generating a 3D map of a given target. However, there are some significant drawbacks of Flash Lidars that must be resolved if their use is to be of long-term significance. Overcoming the challenges of Flash LIDARs for navigation-namely, low technology readiness level, lack of historical performance data, target identification, existence of false positives, and performance of vision processing algorithms as intermediaries between the raw sensor data and the Kalman filter-requires a world-class testing facility, such as the Lockheed Martin Space Operations Simulation Center (SOSC). Ground-based testing is a critical step for maturing the next-generation flash LIDAR-based spacecraft relative navigation. This paper will focus on the tests of an integrated relative navigation system conducted at the SOSC in January 2014. The intent of the tests was to characterize and then improve the performance of relative navigation, while addressing many of the flash LIDAR challenges mentioned above. A section on navigation performance and future recommendation completes the discussion.

  3. 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.

  4. 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.

  5. Navigation in GPS Challenged Environments Based Upon Ranging Imagery

    NASA Astrophysics Data System (ADS)

    Markiel, J. N. Nikki

    , particularly with respect to 2D datasets, has long been a difficult proposition when attempting to link overlapping data sets. 2) Secondly, an innovative methodology to segment a set of discrete 3D range measurements is presented. 3) Finally, the research develops a methodology to support navigation in environments previously infeasible for autonomous vehicles due to lack of position updates. This problem is well known in the navigation field; while Global Positioning Systems (GPS) provide excellent positional information, their signals can become unavailable in a wide variety of conditions. Current research in robotic manipulation rarely addresses the concept of operations within an unknown environment, and virtually never attempts navigation in the presence of non-static objects. The ability to extend the navigation solution beyond these limitations extends the possibilities for autonomous navigation and advances the field of navigation. The current algorithm cannot provide a navigation solution for an indefinite time period; it can extend the feasible extent of navigation without benefit of GPS positioning. While this research could not possibly claim to solve the problem of autonomous navigation, it represents an important step towards the vision of developing a machine to emulate cognitive navigation.

  6. 46 CFR 120.420 - Navigation lights.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 46 Shipping 4 2011-10-01 2011-10-01 false Navigation lights. 120.420 Section 120.420 Shipping... Systems § 120.420 Navigation lights. All vessels must have navigation lights that are in compliance with... than 19.8 meters (65 feet) in length must also have navigation lights that meet UL 1104,...

  7. 46 CFR 183.420 - Navigation lights.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 46 Shipping 7 2010-10-01 2010-10-01 false Navigation lights. 183.420 Section 183.420 Shipping...) ELECTRICAL INSTALLATION Lighting Systems § 183.420 Navigation lights. All vessels must have navigation lights..., except that a vessel of more than 19.8 meters (65 feet) in length must also have navigation lights...

  8. 46 CFR 183.420 - Navigation lights.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 46 Shipping 7 2011-10-01 2011-10-01 false Navigation lights. 183.420 Section 183.420 Shipping...) ELECTRICAL INSTALLATION Lighting Systems § 183.420 Navigation lights. All vessels must have navigation lights..., except that a vessel of more than 19.8 meters (65 feet) in length must also have navigation lights...

  9. 46 CFR 120.420 - Navigation lights.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 46 Shipping 4 2010-10-01 2010-10-01 false Navigation lights. 120.420 Section 120.420 Shipping... Systems § 120.420 Navigation lights. All vessels must have navigation lights that are in compliance with... than 19.8 meters (65 feet) in length must also have navigation lights that meet UL 1104,...

  10. 32 CFR 644.3 - Navigation projects.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 32 National Defense 4 2013-07-01 2013-07-01 false Navigation projects. 644.3 Section 644.3... ESTATE HANDBOOK Project Planning Civil Works § 644.3 Navigation projects. (a) Land to be acquired in fee... for channel improvements, navigation pools, navigation aids, and spoil disposal areas for...

  11. 32 CFR 644.3 - Navigation projects.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 32 National Defense 4 2012-07-01 2011-07-01 true Navigation projects. 644.3 Section 644.3 National... HANDBOOK Project Planning Civil Works § 644.3 Navigation projects. (a) Land to be acquired in fee. All... channel improvements, navigation pools, navigation aids, and spoil disposal areas for future...

  12. 32 CFR 644.3 - Navigation projects.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 32 National Defense 4 2014-07-01 2013-07-01 true Navigation projects. 644.3 Section 644.3 National... HANDBOOK Project Planning Civil Works § 644.3 Navigation projects. (a) Land to be acquired in fee. All... channel improvements, navigation pools, navigation aids, and spoil disposal areas for future...

  13. 46 CFR 183.420 - Navigation lights.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 46 Shipping 7 2014-10-01 2014-10-01 false Navigation lights. 183.420 Section 183.420 Shipping...) ELECTRICAL INSTALLATION Lighting Systems § 183.420 Navigation lights. All vessels must have navigation lights..., except that a vessel of more than 19.8 meters (65 feet) in length must also have navigation lights...

  14. 46 CFR 120.420 - Navigation lights.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 46 Shipping 4 2013-10-01 2013-10-01 false Navigation lights. 120.420 Section 120.420 Shipping... Systems § 120.420 Navigation lights. All vessels must have navigation lights that are in compliance with... than 19.8 meters (65 feet) in length must also have navigation lights that meet UL 1104,...

  15. 46 CFR 120.420 - Navigation lights.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 46 Shipping 4 2012-10-01 2012-10-01 false Navigation lights. 120.420 Section 120.420 Shipping... Systems § 120.420 Navigation lights. All vessels must have navigation lights that are in compliance with... than 19.8 meters (65 feet) in length must also have navigation lights that meet UL 1104,...

  16. 46 CFR 183.420 - Navigation lights.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 46 Shipping 7 2013-10-01 2013-10-01 false Navigation lights. 183.420 Section 183.420 Shipping...) ELECTRICAL INSTALLATION Lighting Systems § 183.420 Navigation lights. All vessels must have navigation lights..., except that a vessel of more than 19.8 meters (65 feet) in length must also have navigation lights...

  17. 46 CFR 120.420 - Navigation lights.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 46 Shipping 4 2014-10-01 2014-10-01 false Navigation lights. 120.420 Section 120.420 Shipping... Systems § 120.420 Navigation lights. All vessels must have navigation lights that are in compliance with... than 19.8 meters (65 feet) in length must also have navigation lights that meet UL 1104,...

  18. 46 CFR 183.420 - Navigation lights.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 46 Shipping 7 2012-10-01 2012-10-01 false Navigation lights. 183.420 Section 183.420 Shipping...) ELECTRICAL INSTALLATION Lighting Systems § 183.420 Navigation lights. All vessels must have navigation lights..., except that a vessel of more than 19.8 meters (65 feet) in length must also have navigation lights...

  19. 33 CFR 66.10-15 - Aids to navigation.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 33 Navigation and Navigable Waters 1 2014-07-01 2014-07-01 false Aids to navigation. 66.10-15 Section 66.10-15 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY AIDS TO NAVIGATION PRIVATE AIDS TO NAVIGATION Uniform State Waterway Marking System § 66.10-15 Aids to navigation....

  20. 33 CFR 66.10-15 - Aids to navigation.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 33 Navigation and Navigable Waters 1 2012-07-01 2012-07-01 false Aids to navigation. 66.10-15 Section 66.10-15 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY AIDS TO NAVIGATION PRIVATE AIDS TO NAVIGATION Uniform State Waterway Marking System § 66.10-15 Aids to navigation....

  1. 33 CFR 66.10-15 - Aids to navigation.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 33 Navigation and Navigable Waters 1 2011-07-01 2011-07-01 false Aids to navigation. 66.10-15 Section 66.10-15 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY AIDS TO NAVIGATION PRIVATE AIDS TO NAVIGATION Uniform State Waterway Marking System § 66.10-15 Aids to navigation....

  2. 33 CFR 66.10-15 - Aids to navigation.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 33 Navigation and Navigable Waters 1 2013-07-01 2013-07-01 false Aids to navigation. 66.10-15 Section 66.10-15 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY AIDS TO NAVIGATION PRIVATE AIDS TO NAVIGATION Uniform State Waterway Marking System § 66.10-15 Aids to navigation....

  3. 33 CFR 66.10-15 - Aids to navigation.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 33 Navigation and Navigable Waters 1 2010-07-01 2010-07-01 false Aids to navigation. 66.10-15 Section 66.10-15 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY AIDS TO NAVIGATION PRIVATE AIDS TO NAVIGATION Uniform State Waterway Marking System § 66.10-15 Aids to navigation....

  4. Modelling group navigation: transitive social structures improve navigational performance

    PubMed Central

    Flack, Andrea; Biro, Dora; Guilford, Tim; Freeman, Robin

    2015-01-01

    Collective navigation demands that group members reach consensus on which path to follow, a task that might become more challenging when the group's members have different social connections. Group decision-making mechanisms have been studied successfully in the past using individual-based modelling, although many of these studies have neglected the role of social connections between the group's interacting members. Nevertheless, empirical studies have demonstrated that individual recognition, previous shared experiences and inter-individual familiarity can influence the cohesion and the dynamics of the group as well as the relative spatial positions of specific individuals within it. Here, we use models of collective motion to study the impact of social relationships on group navigation by introducing social network structures into a model of collective motion. Our results show that groups consisting of equally informed individuals achieve the highest level of accuracy when they are hierarchically organized with the minimum number of preferred connections per individual. We also observe that the navigational accuracy of a group will depend strongly on detailed aspects of its social organization. More specifically, group navigation does not only depend on the underlying social relationships, but also on how much weight leading individuals put on following others. Also, we show that groups with certain social structures can compensate better for an increased level of navigational error. The results have broader implications for studies on collective navigation and motion because they show that only by considering a group's social system can we fully elucidate the dynamics and advantages of joint movements. PMID:26063820

  5. 75 FR 36373 - Federal Advisory Committee; Advisory Council on Dependents' Education

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-06-25

    ... of the Secretary Federal Advisory Committee; Advisory Council on Dependents' Education AGENCY... that the Advisory Council on Dependents' Education will meet on September 8, 2010, in Arlington, VA... organizations may submit written statements to the Advisory Council on Dependents' Education about its...

  6. 78 FR 69392 - Defense Advisory Committee on Military Personnel Testing; Notice of Federal Advisory Committee...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-11-19

    ... of the Secretary Defense Advisory Committee on Military Personnel Testing; Notice of Federal Advisory... advisory committee meeting of the Defense Advisory Committee on Military Personnel Testing. The purpose of the meeting is to review planned changes and progress in developing computerized tests for...

  7. 78 FR 70960 - Utah Resource Advisory Council/Recreation Resource Advisory Council Meeting/Conference Call

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-11-27

    ... Bureau of Land Management Utah Resource Advisory Council/Recreation Resource Advisory Council Meeting..., and the Federal Lands Recreation Enhancement Act, the Bureau of Land Management's (BLM) Utah Resource Advisory Council (RAC)/Recreation Resource Advisory Council (RRAC) will host a meeting/conference...

  8. 75 FR 59235 - Federal Advisory Committee; Army National Cemeteries Advisory Commission

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-09-27

    ... of the Secretary Federal Advisory Committee; Army National Cemeteries Advisory Commission AGENCY... establishing the charter for the Army National Cemeteries Advisory Commission (hereafter referred to as ``the... advisory committee established to provide the Secretary of Defense, through the Under Secretary of the...

  9. 75 FR 22757 - Federal Advisory Committee; Army Education Advisory Committee; Charter Renewal

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-04-30

    ... of the Secretary Federal Advisory Committee; Army Education Advisory Committee; Charter Renewal... renewing the charter for the Army Education Advisory Committee (hereafter referred to as the Committee... advisory committee that shall provide the Secretary of Defense, through the Secretary of the Army and...

  10. 75 FR 22560 - Federal Advisory Committee; U.S. Air Force Scientific Advisory Board; Charter Renewal

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-04-29

    ... of the Secretary Federal Advisory Committee; U.S. Air Force Scientific Advisory Board; Charter... that it is renewing the charter for the U.S. Air Force Scientific Advisory Board (hereafter referred to as the Board). FOR FURTHER INFORMATION CONTACT: Jim Freeman, Deputy Advisory Committee...

  11. 75 FR 22754 - Federal Advisory Committee; Chief of Engineers Environmental Advisory Board; Charter Renewal

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-04-30

    ... of the Secretary Federal Advisory Committee; Chief of Engineers Environmental Advisory Board; Charter... that it is renewing the charter for the Chief of Engineers Environmental Advisory Board (hereafter referred to as the Board). FOR FURTHER INFORMATION CONTACT: Jim Freeman, Deputy Advisory...

  12. 78 FR 56231 - Government-Wide Travel Advisory Committee (GTAC); Public Advisory Committee Meeting

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-09-12

    ... ADMINISTRATION Government-Wide Travel Advisory Committee (GTAC); Public Advisory Committee Meeting AGENCY: Office of Government-Wide Policy, General Services Administration (GSA). ACTION: Notice. SUMMARY: The Government-wide Travel Advisory Committee (GTAC) (the Committee), is a Federal Advisory Committee...

  13. 78 FR 51191 - Government-wide Travel Advisory Committee (GTAC); Public Advisory Committee Meeting

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-08-20

    ... ADMINISTRATION Government-wide Travel Advisory Committee (GTAC); Public Advisory Committee Meeting AGENCY: Office of Government-wide Policy, General Services Administration (GSA). ACTION: Notice. SUMMARY: The Government-wide Travel Advisory Committee (GTAC) (the Committee), is a Federal Advisory Committee...

  14. Structure and navigation for electronic publishing

    NASA Astrophysics Data System (ADS)

    Tillinghast, John; Beretta, Giordano B.

    1998-01-01

    The sudden explosion of the World Wide Web as a new publication medium has given a dramatic boost to the electronic publishing industry, which previously was a limited market centered around CD-ROMs and on-line databases. While the phenomenon has parallels to the advent of the tabloid press in the middle of last century, the electronic nature of the medium brings with it the typical characteristic of 4th wave media, namely the acceleration in its propagation speed and the volume of information. Consequently, e-publications are even flatter than print media; Shakespeare's Romeo and Juliet share the same computer screen with a home-made plagiarized copy of Deep Throat. The most touted tool for locating useful information on the World Wide Web is the search engine. However, due to the medium's flatness, sought information is drowned in a sea of useless information. A better solution is to build tools that allow authors to structure information so that it can easily be navigated. We experimented with the use of ontologies as a tool to formulate structures for information about a specific topic, so that related concepts are placed in adjacent locations and can easily be navigated using simple and ergonomic user models. We describe our effort in building a World Wide Web based photo album that is shared among a small network of people.

  15. Practice advisory on liposuction.

    PubMed

    Iverson, Ronald E; Lynch, Dennis J

    2004-04-15

    COMMITTEE STATEMENT: At the 69th annual meeting of the American Society of Plastic Surgeons (ASPS) in October of 2000, the ASPS Board of Directors convened the Task Force on Patient Safety in Office-Based Surgery Facilities. The task force was assembled in the wake of several highly publicized patient deaths involving plastic surgery and increasing state legislative and regulatory activity of office-based surgery facilities. In response to the increased scrutiny of the office-based surgery setting, the task force produced two practice advisories: "Procedures in the Office-Based Surgery Setting" and "Patient Selection in the Office-Based Surgery Setting." Since the task force's inception, professional and public awareness of patient safety issues has continued to grow. This heightened interest resulted in an increased need for plastic surgeons to communicate their views on the topic. To meet this challenge, the task force evolved into the Committee on Patient Safety, allowing the committee to address topics affecting the safety and welfare of plastic surgery patients, regardless of the facility setting. The "Practice Advisory on Liposuction" is the first advisory developed since the committee was formed. It was a lengthy and painstaking process for the committee, which included representatives from related plastic surgery organizations as well as the American Society of Anesthesiologists (ASA). Committee members included Ronald E. Iverson, M.D., chair; Jeffery L. Apfelbaum, M.D., ASA representative; Bruce L. Cunningham, M.D., ASPS/Plastic Surgery Educational Foundation (PSEF) Joint Outcomes Task Force representative; Richard A. D'Amico, M.D., ASPS representative; Victor L. Lewis, Jr., M.D., ASPS Health Policy Analysis Committee representative; Dennis J. Lynch, M.D., ASPS representative; Noel B. McDevitt, M.D., ASPS Deep Vein Thrombosis Task Force representative; Michael F. McGuire, M.D., The American Society for Aesthetic Plastic Surgery (ASAPS) representative

  16. Autonomous navigation system. [gyroscopic pendulum for air navigation

    NASA Technical Reports Server (NTRS)

    Merhav, S. J. (Inventor)

    1981-01-01

    An inertial navigation system utilizing a servo-controlled two degree of freedom pendulum to obtain specific force components in the locally level coordinate system is described. The pendulum includes a leveling gyroscope and an azimuth gyroscope supported on a two gimbal system. The specific force components in the locally level coordinate system are converted to components in the geographical coordinate system by means of a single Euler transformation. The standard navigation equations are solved to determine longitudinal and lateral velocities. Finally, vehicle position is determined by a further integration.

  17. Mission Operations and Navigation Toolkit Environment

    NASA Technical Reports Server (NTRS)

    Sunseri, Richard F.; Wu, Hsi-Cheng; Hanna, Robert A.; Mossey, Michael P.; Duncan, Courtney B.; Evans, Scott E.; Evans, James R.; Drain, Theodore R.; Guevara, Michelle M.; Martin Mur, Tomas J.; Attiyah, Ahlam A.

    2009-01-01

    MONTE (Mission Operations and Navigation Toolkit Environment) Release 7.3 is an extensible software system designed to support trajectory and navigation analysis/design for space missions. MONTE is intended to replace the current navigation and trajectory analysis software systems, which, at the time of this reporting, are used by JPL's Navigation and Mission Design section. The software provides an integrated, simplified, and flexible system that can be easily maintained to serve the needs of future missions in need of navigation services.

  18. Evolutionary Computing for Low-thrust Navigation

    NASA Technical Reports Server (NTRS)

    Lee, Seungwon; Fink, Wolfgang; vonAllmed, Paul; Petropoulos, Anastassios E.; Russell, Ryan P.; Terrile, Richard J.

    2005-01-01

    The development of new mission concepts requires efficient methodologies to analyze, design and simulate the concepts before implementation. New mission concepts are increasingly considering the use of ion thrusters for fuel-efficient navigation in deep space. This paper presents parallel, evolutionary computing methods to design trajectories of spacecraft propelled by ion thrusters and to assess the trade-off between delivered payload mass and required flight time. The developed methods utilize a distributed computing environment in order to speed up computation, and use evolutionary algorithms to find globally Pareto-optimal solutions. The methods are coupled with two main traditional trajectory design approaches, which are called direct and indirect. In the direct approach, thrust control is discretized in either arc time or arc length, and the resulting discrete thrust vectors are optimized. In the indirect approach, a thrust control problem is transformed into a costate control problem, and the initial values of the costate vector are optimized. The developed methods are applied to two problems: 1) an orbit transfer around the Earth and 2) a transfer between two distance retrograde orbits around Europa, the closest to Jupiter of the icy Galilean moons. The optimal solutions found with the present methods are comparable to other state-of-the-art trajectory optimizers and to analytical approximations for optimal transfers, while the required computational time is several orders of magnitude shorter than other optimizers thanks to an intelligent design of control vector discretization, advanced algorithmic parameterization, and parallel computing.

  19. 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.

  20. 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.

  1. Navigation in Animals

    NASA Astrophysics Data System (ADS)

    Matthews, G. V. T.

    This paper was first published in the Journal in 1969 (Vol. 22, p. 118). It is followed by comments from John Kemp.The last twenty-one years have seen some very striking advances in our knowledge of how animals can determine their location. In many cases we have learned that they have available a wider range of stimuli than ourselves for recognizing landmarks and for pilotage within their home area. Thus the associated senses of smell and taste are extraordinarily well developed in some species. The ability of the males of certain moths to detect the scent emitted by females at very considerable distances had long been known. More recently the extreme sensitivity, and selectivity, of fish to waterborne odours has led to an understanding of how they locate their home waters. As but one example, eels have shown reactions to concentrations of chemicals as low as 3 18, equivalent to but two or three molecules within the fish's olfactory sac. In other cases animals have developed sensitivities of which we have little or no conception. Ecolocation is employed by certain birds, by many marine animals and reaches a peak of efficiency in the case of bats. Not only do the latter detect sounds of much higher frequency than ourselves, they also respond to echoes of sounds they emitted but 0·001 seconds earlier. We have little appreciation of the sensations produced by the pressure-receptors in the lateral-line organs of fish.

  2. 14 CFR 125.267 - Flight navigator and long-range navigation equipment.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... 14 Aeronautics and Space 3 2012-01-01 2012-01-01 false Flight navigator and long-range navigation... Requirements § 125.267 Flight navigator and long-range navigation equipment. (a) No certificate holder may...-range means of navigation which enable a reliable determination to be made of the position of...

  3. 14 CFR 125.267 - Flight navigator and long-range navigation equipment.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... 14 Aeronautics and Space 3 2013-01-01 2013-01-01 false Flight navigator and long-range navigation... Requirements § 125.267 Flight navigator and long-range navigation equipment. (a) No certificate holder may...-range means of navigation which enable a reliable determination to be made of the position of...

  4. 14 CFR 125.267 - Flight navigator and long-range navigation equipment.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... 14 Aeronautics and Space 3 2014-01-01 2014-01-01 false Flight navigator and long-range navigation... Requirements § 125.267 Flight navigator and long-range navigation equipment. (a) No certificate holder may...-range means of navigation which enable a reliable determination to be made of the position of...

  5. 14 CFR 125.267 - Flight navigator and long-range 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 long-range navigation... Requirements § 125.267 Flight navigator and long-range navigation equipment. (a) No certificate holder may...-range means of navigation which enable a reliable determination to be made of the position of...

  6. 14 CFR 125.267 - Flight navigator and long-range 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 long-range navigation... Requirements § 125.267 Flight navigator and long-range navigation equipment. (a) No certificate holder may...-range means of navigation which enable a reliable determination to be made of the position of...

  7. CONCEPT LEARNING AND CONCEPT TEACHING.

    ERIC Educational Resources Information Center

    GLASER, ROBERT

    REVIEWED ARE THE PSYCHOLOGICAL STUDIES OF CONCEPT LEARNING AS THEY RELATE TO CONCEPT TEACHING. AN ANALYSIS IS MADE OF THE NATURE OF CONCEPT LEARNING AS IT IS STUDIED IN THE PSYCHOLOGIST'S LABORATORY, INCLUDING THE NATURE OF CONCEPT TASKS AS THEY APPEAR IN SUBJECT MATTER LEARNING. THE PRIMARY KINDS OF CONCEPT LEARNING SITUATIONS, INCLUDING THE…

  8. Navigation system for autonomous mapper robots

    NASA Astrophysics Data System (ADS)

    Halbach, Marc; Baudoin, Yvan

    1993-05-01

    This paper describes the conception and realization of a fast, robust, and general navigation system for a mobile (wheeled or legged) robot. A database, representing a high level map of the environment is generated and continuously updated. The first part describes the legged target vehicle and the hexapod robot being developed. The second section deals with spatial and temporal sensor fusion for dynamic environment modeling within an obstacle/free space probabilistic classification grid. Ultrasonic sensors are used, others are suspected to be integrated, and a-priori knowledge is treated. US sensors are controlled by the path planning module. The third part concerns path planning and a simulation of a wheeled robot is also presented.

  9. 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.

  10. Payload advisory panel recommendations

    NASA Technical Reports Server (NTRS)

    Moore, Berrien, III

    1991-01-01

    The Payload Advisory Panel proposes a restructured Earth Observing System (EOS) mission to address high-priority science and environmental policy issues in Earth System Science. These issues have been identified through studies conducted by the Intergovernmental Panel on Climate Change (IPCC), the United States Environmental Protection Agency (EPA), and the Committee on Earth and Environmental Sciences (CEES). The restructured EOS defers efforts to improve the understanding of the middle and upper stratosphere and solid earth geophysics. The strategy of the mission combines high priority new measurements with continuation of critical data sets begun by missions which precede EOS. Collaborative arrangements with international partners are an essential part of the program and additional arrangements are posed. The need for continuity in Earth observations and the urgency of environmental questions require launch of some EOS elements as soon as possible. They further require maintenance of the EOS objective of obtaining consistent 15-year measurement records.

  11. Atmospheric Release Advisory Capability

    SciTech Connect

    Dickerson, M.H.; Gudiksen, P.H.; Sullivan, T.J.

    1983-02-01

    The Atmospheric Release Advisory Capability (ARAC) project is a Department of Energy (DOE) sponsored real-time emergency response service available for use by both federal and state agencies in case of a potential or actual atmospheric release of nuclear material. The project, initiated in 1972, is currently evolving from the research and development phase to full operation. Plans are underway to expand the existing capability to continuous operation by 1984 and to establish a National ARAC Center (NARAC) by 1988. This report describes the ARAC system, its utilization during the past two years, and plans for its expansion during the next five to six years. An integral part of this expansion is due to a very important and crucial effort sponsored by the Defense Nuclear Agency to extend the ARAC service to approximately 45 Department of Defense (DOD) sites throughout the continental US over the next three years.

  12. Aerospace Safety Advisory Panel

    NASA Technical Reports Server (NTRS)

    1993-01-01

    The Aerospace Safety Advisory Panel (ASAP) provided oversight on the safety aspects of many NASA programs. In addition, ASAP undertook three special studies. At the request of the Administrator, the panel assessed the requirements for an assured crew return vehicle (ACRV) for the space station and reviewed the organization of the safety and mission quality function within NASA. At the behest of Congress, the panel formed an independent, ad hoc working group to examine the safety and reliability of the space shuttle main engine. Section 2 presents findings and recommendations. Section 3 consists of information in support of these findings and recommendations. Appendices A, B, C, and D, respectively, cover the panel membership, the NASA response to the findings and recommendations in the March 1992 report, a chronology of the panel's activities during the reporting period, and the entire ACRV study report.

  13. 75 FR 31760 - Advisory Committee Meeting

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-06-04

    ... Grain Inspection, Packers and Stockyards Administration Advisory Committee Meeting AGENCY: Grain... of the Grain Inspection, Packers and Stockyards Administration (GIPSA) Grain Inspection Advisory... Administrator on the programs and services that GIPSA delivers under the U.S. Grain Standards...

  14. 75 FR 67682 - Advisory Committee Meeting

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-11-03

    ... Grain Inspection, Packers and Stockyards Administration Advisory Committee Meeting AGENCY: Grain... of the Grain Inspection, Packers and Stockyards Administration (GIPSA) Grain Inspection Advisory... Administrator on the programs and services that GIPSA delivers under the U.S. Grain Standards...

  15. 76 FR 30305 - Advisory Committee Meeting

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-05-25

    ... Grain Inspection, Packers and Stockyards Administration Advisory Committee Meeting AGENCY: Grain... of the Grain Inspection, Packers and Stockyards Administration (GIPSA) Grain Inspection Advisory... Administrator on the programs and services that GIPSA delivers under the U.S. Grain Standards...

  16. 75 FR 44770 - Marine Fisheries Advisory Committee

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-07-29

    ... National Oceanic and Atmospheric Administration RIN 0648-XX87 Marine Fisheries Advisory Committee AGENCY: National Marine Fisheries Service (NMFS), National Oceanic and Atmospheric Administration (NOAA), Commerce... of a forthcoming meeting of the Marine Fisheries Advisory Committee (MAFAC). The members will...

  17. 78 FR 3402 - Marine Fisheries Advisory Committee

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-01-16

    ... National Oceanic and Atmospheric Administration RIN 0648-XC443 Marine Fisheries Advisory Committee AGENCY: National Marine Fisheries Service (NMFS), National Oceanic and Atmospheric Administration (NOAA), Commerce... of a forthcoming meeting of the Marine Fisheries Advisory Committee (MAFAC). The members will...

  18. 77 FR 46733 - Marine Fisheries Advisory Committee

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-08-06

    ... National Oceanic and Atmospheric Administration RIN 0648-XC145 Marine Fisheries Advisory Committee AGENCY: National Marine Fisheries Service (NMFS), National Oceanic and Atmospheric Administration (NOAA), Commerce... of a forthcoming meeting of the Marine Fisheries Advisory Committee (MAFAC). The members will...

  19. 76 FR 14379 - Marine Fisheries Advisory Committee

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-03-16

    ... National Oceanic and Atmospheric Administration RIN 0648-XA265 Marine Fisheries Advisory Committee AGENCY: National Marine Fisheries Service (NMFS), National Oceanic and Atmospheric Administration (NOAA), Commerce... of a forthcoming meeting of the Marine Fisheries Advisory Committee (MAFAC). The members will...

  20. 75 FR 13598 - NASA Advisory Council; Meeting

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-03-22

    ... SPACE ADMINISTRATION NASA Advisory Council; Meeting AGENCY: National Aeronautics and Space... Information Technology Infrastructure Committee of the NASA Advisory Council. DATES: Thursday, April 15, 2010...; 2939943. ADDRESSES: NASA Headquarters, 300 E Street, SW., Washington, DC, Room 2O43 FOR...

  1. 77 FR 67029 - NASA Advisory Council Meeting

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-11-08

    ... SPACE ADMINISTRATION NASA Advisory Council Meeting AGENCY: National Aeronautics and Space Administration... amended, the National Aeronautics and Space Administration announces a meeting of the NASA Advisory... are local time. ADDRESSES: NASA Marshall Space Flight Center, Building 4200, Room P- 110,...

  2. 77 FR 57086 - Open Internet Advisory Committee

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-09-17

    ... COMMISSION Open Internet Advisory Committee AGENCY: Federal Communications Commission. ACTION: Notice. SUMMARY: The Commission announces the next meeting date, time, and agenda of the Open Internet Advisory... Open Internet rules, and to provide any recommendations it deems appropriate to the...

  3. 77 FR 74661 - Open Internet Advisory Committee

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-12-17

    ... COMMISSION Open Internet Advisory Committee AGENCY: Federal Communications Commission. ACTION: Notice. SUMMARY: The Commission announces the next meeting date, time, and agenda of the Open Internet Advisory... Open Internet rules, and to provide any recommendations it deems appropriate to the...

  4. 78 FR 16852 - Open Internet Advisory Committee

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-03-19

    ... COMMISSION Open Internet Advisory Committee AGENCY: Federal Communications Commission. ACTION: Notice. SUMMARY: The Commission announces the next meeting date, time, and agenda of the Open Internet Advisory... Open Internet rules, and to provide any recommendations it deems appropriate to the...

  5. 75 FR 3197 - Mendocino Resource Advisory Committee

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-01-20

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF AGRICULTURE Forest Service Mendocino Resource Advisory Committee AGENCY: Forest Service, USDA. ACTION: Notice of meeting. SUMMARY: The Mendocino County Resource Advisory Committee will meet February 5, 2010 (RAC)...

  6. 77 FR 47812 - Yakutat Resource Advisory Committee

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-08-10

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF AGRICULTURE Forest Service Yakutat Resource Advisory Committee AGENCY: Forest Service, USDA. ACTION: Notice of meeting. SUMMARY: The Yakutat Resource Advisory Committee will meet in Yakutat, Alaska. The committee...

  7. 77 FR 50985 - Gogebic Resource Advisory Committee

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-08-23

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF AGRICULTURE Forest Service Gogebic Resource Advisory Committee AGENCY: Forest Service, USDA. ACTION: Notice of meeting. SUMMARY: The Gogebic Resource Advisory Committee will meet in Watersmeet, Michigan. The...

  8. 77 FR 50984 - Ontonagon Resource Advisory Committee

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-08-23

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF AGRICULTURE Forest Service Ontonagon Resource Advisory Committee AGENCY: Forest Service, USDA. ACTION: Notice of meeting. SUMMARY: The Ontonagon Resource Advisory Committee will meet in Ontonagon, Michigan....

  9. 76 FR 22077 - Gogebic Resource Advisory Committee

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-04-20

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF AGRICULTURE Forest Service Gogebic Resource Advisory Committee AGENCY: Forest Service, USDA. ACTION: Notice of meeting. SUMMARY: The Gogebic Resource Advisory Committee will meet in Marenisco, Michigan. The...

  10. 76 FR 38109 - Allegheny Resource Advisory Committee

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-06-29

    ... From the Federal Register Online via the Government Publishing Office 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 Marienville, Pennsylvania....

  11. 77 FR 48126 - Flathead Resource Advisory Committee

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-08-13

    ... From the Federal Register Online via the Government Publishing Office 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 Kalispell, Montana. The...

  12. 76 FR 20310 - Ketchikan Resource Advisory Committee

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-04-12

    ... Forest Service Ketchikan Resource Advisory Committee AGENCY: Forest Service, USDA. ACTION: Notice of meeting. SUMMARY: The Ketchikan Resource Advisory Committee will meet in Ketchikan, Alaska, June 28, 2011... Ranger District, 3031 Tongass Avenue, Ketchikan, Alaska. Send written comments to Ketchikan...

  13. 77 FR 49410 - Chequamegon Resource Advisory Committee

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-08-16

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF AGRICULTURE Forest Service Chequamegon Resource Advisory Committee AGENCY: Forest Service, USDA. ACTION: Notice of meeting. SUMMARY: The Chequamegon Resource Advisory Committee will meet in Park Falls, Wisconsin....

  14. 76 FR 11193 - Superior Resource Advisory Committee

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-03-01

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF AGRICULTURE Forest Service Superior Resource Advisory Committee AGENCY: Forest Service, USDA. ACTION: Notice of meeting. SUMMARY: The Superior Resource Advisory Committee will meet in Duluth, Minnesota. The...

  15. 76 FR 51343 - Mendocino Resource Advisory Committee

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-08-18

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF AGRICULTURE Forest Service Mendocino Resource Advisory Committee AGENCY: Forest Service, USDA. ACTION: Notice of meeting. ] SUMMARY: The Mendocino County Resource Advisory Committee will meet September 16, 2011 (RAC)...

  16. 76 FR 4862 - Fishlake Resource Advisory Committee

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-01-27

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF AGRICULTURE Forest Service Fishlake Resource Advisory Committee AGENCY: Forest Service, USDA. ACTION: Notice of meeting. SUMMARY: The Fishlake Resource Advisory Committee will meet in Richfield, Utah. The committee...

  17. 77 FR 50460 - Cherokee Resource Advisory Committee

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-08-21

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF AGRICULTURE Forest Service Cherokee Resource Advisory Committee AGENCY: Forest Service, USDA. ACTION: Notice of meeting. SUMMARY: The Cherokee Resource Advisory Committee will meet in Knoxville, Tennessee....

  18. 76 FR 50993 - Allegheny Resource Advisory Committee

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-08-17

    ... From the Federal Register Online via the Government Publishing Office 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 Warren, Pennsylvania....

  19. 78 FR 22842 - Nicolet Resource Advisory Committee

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-04-17

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF AGRICULTURE Forest Service Nicolet Resource Advisory Committee AGENCY: Forest Service, USDA. ACTION: Notice of meeting. SUMMARY: The Nicolet Resource Advisory Committee will meet in Crandon, WI. The committee...

  20. 77 FR 50676 - Nicolet Resource Advisory Committee

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-08-22

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF AGRICULTURE Forest Service Nicolet Resource Advisory Committee AGENCY: Forest Service, USDA. ACTION: Notice of meeting. SUMMARY: The Nicolet Resource Advisory Committee will meet in Crandon, WI. The committee...

  1. 75 FR 45091 - Ontonagon Resource Advisory Committee

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-08-02

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF AGRICULTURE Forest Service Ontonagon Resource Advisory Committee AGENCY: Forest Service, USDA. ACTION: Notice of meeting. SUMMARY: The Ontonagon Resource Advisory Committee will meet in Ontonagon, Michigan....

  2. 77 FR 56607 - Mendocino Resource Advisory Committee

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-09-13

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF AGRICULTURE Forest Service Mendocino Resource Advisory Committee AGENCY: Forest Service, USDA. ACTION: Notice of meeting. SUMMARY: The Mendocino County Resource Advisory Committee will meet September 21, 2012 (RAC)...

  3. 77 FR 45329 - Sabine Resource Advisory Committee

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-07-31

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF AGRICULTURE Forest Service Sabine Resource Advisory Committee AGENCY: Forest Service, USDA. ACTION: Notice of meeting. SUMMARY: The Sabine Resource Advisory Committee will meet in ] Hemphill, Texas. The committee...

  4. 75 FR 26918 - Fishlake Resource Advisory Committee

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-05-13

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF AGRICULTURE Forest Service Fishlake Resource Advisory Committee AGENCY: Forest Service, USDA. ACTION: Notice of meeting. SUMMARY: The Fishlake Resource Advisory Committee will meet in Richfield, Utah. The committee...

  5. 76 FR 85 - Coconino Resource Advisory Committee

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-01-03

    ... 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, to finalize...., Flagstaff, Arizona 86004. Send written comments to Brady Smith, RAC Coordinator, Coconino Resource...

  6. 75 FR 27704 - Mendocino Resource Advisory Committee

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-05-18

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF AGRICULTURE Forest Service Mendocino Resource Advisory Committee AGENCY: Forest Service, USDA. ACTION: Notice of meeting. SUMMARY: The Mendocino County Resource Advisory Committee will meet June 18, 2010 (RAC)...

  7. 76 FR 22672 - Nicolet Resource Advisory Committee

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-04-22

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF AGRICULTURE Forest Service Nicolet Resource Advisory Committee AGENCY: Forest Service, USDA. ACTION: Notice of meeting. SUMMARY: The Nicolet Resource Advisory Committee will meet in Crandon, WI. The committee...

  8. 75 FR 42067 - Chequamegon Resource Advisory Committee

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-07-20

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF AGRICULTURE Forest Service Chequamegon Resource Advisory Committee AGENCY: Forest Service, USDA. ACTION: Notice of meeting. SUMMARY: The Nicolet Resource Advisory Committee will meet in Crandon, Wisconsin. The...

  9. 78 FR 23741 - Flathead Resource Advisory Committee

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-04-22

    ... From the Federal Register Online via the Government Publishing Office 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 Kalispell, Montana. The...

  10. 78 FR 41362 - Ontonagon Resource Advisory Committee

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-07-10

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF AGRICULTURE Forest Service Ontonagon Resource Advisory Committee AGENCY: Forest Service, USDA. ACTION: Notice of meeting. SUMMARY: The Ontonagon Resource Advisory Committee will meet in Kenton, Michigan on the...

  11. 76 FR 2882 - Ontonagon Resource Advisory Committee

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-01-18

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF AGRICULTURE Forest Service Ontonagon Resource Advisory Committee AGENCY: Forest Service, USDA. ACTION: Notice of meeting. SUMMARY: The Ontonagon Resource Advisory Committee will meet in Ewen, Michigan. The Committee...

  12. 78 FR 41362 - Gogebic Resource Advisory Committee

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-07-10

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF AGRICULTURE Forest Service Gogebic Resource Advisory Committee AGENCY: Forest Service, USDA. ACTION: Notice of meeting. SUMMARY: The Gogebic Resource Advisory Committee (RAC) will meet in Watersmeet, Michigan on...

  13. 76 FR 44573 - Chequamegon Resource Advisory Committee

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-07-26

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF AGRICULTURE Forest Service Chequamegon Resource Advisory Committee AGENCY: Forest Service, USDA. ACTION: Notice of meeting. SUMMARY: The Chequamegon Resource Advisory Committee will meet in Park Falls, Wisconsin....

  14. 76 FR 45227 - Allegheny Resource Advisory Committee

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-07-28

    ... From the Federal Register Online via the Government Publishing Office ] 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 Clarendon, Pennsylvania....

  15. 77 FR 49410 - Kisatchie Resource Advisory Committee

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-08-16

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF AGRICULTURE Forest Service Kisatchie Resource Advisory Committee AGENCY: Forest Service, USDA. ACTION: Notice of meeting. SUMMARY: The Kisatchie Resource Advisory Committee will meet in Natchitoches, Louisiana....

  16. 76 FR 50994 - Allegheny Resource Advisory Committee

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-08-17

    ... From the Federal Register Online via the Government Publishing Office 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 Clarendon, Pennsylvania....

  17. 76 FR 23275 - Allegheny Resource Advisory Committee

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-04-26

    ... From the Federal Register Online via the Government Publishing Office 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 Clarendon, Pennsylvania....

  18. 76 FR 770 - Mendocino Resource Advisory Committee

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-01-06

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF AGRICULTURE Forest Service Mendocino Resource Advisory Committee AGENCY: Forest Service, USDA. ACTION: Notice of meeting. SUMMARY: The Mendocino County Resource Advisory Committee will meet January 21, 2011 (RAC)...

  19. 76 FR 4089 - Nicolet Resource Advisory Committee

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-01-24

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF AGRICULTURE Forest Service Nicolet Resource Advisory Committee AGENCY: Forest Service, USDA. ACTION: Notice of Meeting. SUMMARY: The Nicolet Resource Advisory Committee will meet in Crandon, Wisconsin. The...

  20. 75 FR 55539 - Shoshone Resource Advisory Committee

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-09-13

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF AGRICULTURE Forest Service Shoshone Resource Advisory Committee AGENCY: Forest Service, USDA. ACTION: Notice of meeting. SUMMARY: The Shoshone Resource Advisory Committee will meet in Thermopolis, Wyoming....

  1. 75 FR 19608 - Recreation Resource Advisory Committees

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-04-15

    ...; ] DEPARTMENT OF AGRICULTURE Forest Service Recreation Resource Advisory Committees AGENCY: Forest Service, USDA. ACTION: Call for nominations for the Pacific Northwest Recreation Resource Advisory Committees. SUMMARY: The Secretary of Agriculture has established the Pacific Northwest Recreation Resource...

  2. 76 FR 23969 - Virginia Resource Advisory Committee

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-04-29

    ... Forest Service Virginia Resource Advisory Committee AGENCY: Forest Service, USDA. ACTION: Notice of meeting. SUMMARY: The Virginia Resource Advisory Committee will meet in Roanoke, Virginia. The committee... National Forests Supervisor's Office conference room at 5162 Valleypointe Parkway, Roanoke, Virginia...

  3. 75 FR 67351 - Environmental Management Advisory Board

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-11-02

    ... Environmental Management Advisory Board AGENCY: Department of Energy. ACTION: Notice of Open Teleconference. SUMMARY: This notice announces a teleconference of the Environmental Management Advisory Board (EMAB). The... is to provide the Assistant Secretary for Environmental Management (EM) with advice...

  4. 76 FR 39884 - Aviation Security Advisory Committee

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-07-07

    ... SECURITY Aviation Security Advisory Committee AGENCY: Transportation Security Administration, DHS. ACTION... Security Administration (TSA) announces the re-establishment of the Aviation Security Advisory Committee...-governmental organizations (NGOs) and stakeholder representatives concerning potential risks to...

  5. 5 CFR 724.403 - Advisory guidelines.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... RETALIATION ACT OF 2002 Best Practices § 724.403 Advisory guidelines. OPM will issue advisory guidelines to Federal agencies incorporating the best practices identified under § 724.402 that agencies may follow...

  6. 77 FR 49777 - Fishlake Resource Advisory Committee

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-08-17

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF AGRICULTURE Forest Service Fishlake Resource Advisory Committee AGENCY: Forest Service, USDA. ACTION: Notice of meeting. SUMMARY: The Fishlake Resource Advisory Committee will meet in Richfield, Utah. The committee...

  7. 76 FR 16378 - Mendocino Resource Advisory Committee

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-03-23

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF AGRICULTURE Forest Service Mendocino Resource Advisory Committee AGENCY: Forest Service, USDA. ACTION: Notice of meeting. SUMMARY: The Mendocino County Resource Advisory Committee will meet April 15, 2011 (RAC)...

  8. 75 FR 65296 - Superior Resource Advisory Committee

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-10-22

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF AGRICULTURE Forest Service Superior Resource Advisory Committee AGENCY: Forest Service, USDA. ACTION: Notice of meeting. SUMMARY: The Superior Resource Advisory Committee will meet in Duluth, Minnesota. The...

  9. 75 FR 9416 - Advisory Committee Information Hotline

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-03-02

    ... Respiratory Therapy Devices Panel 3014512624 Circulatory System Devices Panel 3014512625 Clinical Chemistry... Central Nervous System Drugs Advisory Committee 3014512543 Pharmaceutical Science & Clinical Pharmacology... current information available about any particular advisory committee meeting, this system will...

  10. Neural mechanisms of insect navigation.

    PubMed

    Webb, Barbara; Wystrach, Antoine

    2016-06-01

    We know more about the ethology of insect navigation than the neural substrates. Few studies have shown direct effects of brain manipulation on navigational behaviour; or measure brain responses that clearly relate to the animal's current location or spatial target, independently of specific sensory cues. This is partly due to the methodological problems of obtaining neural data in a naturally behaving animal. However, substantial indirect evidence, such as comparative anatomy and knowledge of the neural circuits that provide relevant sensory inputs provide converging arguments for the role of some specific brain areas: the mushroom bodies; and the central complex. Finally, modelling can help bridge the gap by relating the computational requirements of a given navigational task to the type of computation offered by different brain areas. PMID:27436729

  11. Behavioral Mapless Navigation Using Rings

    NASA Technical Reports Server (NTRS)

    Monroe, Randall P.; Miller, Samuel A.; Bradley, Arthur T.

    2012-01-01

    This paper presents work on the development and implementation of a novel approach to robotic navigation. In this system, map-building and localization for obstacle avoidance are discarded in favor of moment-by-moment behavioral processing of the sonar sensor data. To accomplish this, we developed a network of behaviors that communicate through the passing of rings, data structures that are similar in form to the sonar data itself and express the decisions of each behavior. Through the use of these rings, behaviors can moderate each other, conflicting impulses can be mediated, and designers can easily connect modules to create complex emergent navigational techniques. We discuss the development of a number of these modules and their successful use as a navigation system in the Trinity omnidirectional robot.

  12. Navigation: traveling the water highways!

    USGS Publications Warehouse

    Fisher, Marion; Vandas, Stephen; Farrar, Frank

    1996-01-01

    NAVIGATION is travel or transportation over water. Many different kinds of boats and ships are used on rivers and oceans to move people and products from one place to another. Navigation was extremely important for foreign and domestic trade and travel in the early days of our country before cars, trucks, trains, and airplanes were invented. In those days, rivers were used as "roads" to connect inland settlements to river and coastal ports. Communities established at these commercial ports became important economic, cultural, and social hubs in the development of our Nation.

  13. Navigator program: exploring new worlds

    NASA Technical Reports Server (NTRS)

    Lawson, Peter R.

    2006-01-01

    NASA's Navigator Program is a series of interrelated missions to explore and characterize new worlds. Each successive mission provides an essential step toward the ultimate goal of discovering habitable planets and life around nearby stars. Are there other solar systems like our own? Are there other habitable worlds? Is there life elsewhere in the universe? these questions are timeless, but only in this generation has technology progressed to the state where we can conceive of an build a suite of missions that capable of answering them. The Navigator Program and its missions are described in this paper.

  14. Seamless Resource-Adaptive Navigation

    NASA Astrophysics Data System (ADS)

    Schwartz, Tim; Stahl, Christoph; Baus, Jörg; Wahlster, Wolfgang

    Research in the project RENA (REsource-Adapative NAvigation) together with DFKI GmbH, BMW Research and Technology AG, and Eyeled GmbH has been concerned with the conceptual and methodological foundations and the design of a resource-adaptive platform for seamless outdoor and indoor navigation that can serve as a basis for product development by the companies in the RENA consortium. Future in-car assistance systems will have a user interface, which adapts to the driveŕs current exposure caused by the actual traffic situation.

  15. Midlet Navigation Graphs in JML

    NASA Astrophysics Data System (ADS)

    Mostowski, Wojciech; Poll, Erik

    In the context of the EU project Mobius on Proof Carrying Code for Java programs (midlets) on mobile devices, we present a way to express midlet navigation graphs in JML. Such navigation graphs express certain security policies for a midlet. The resulting JML specifications can be automatically checked with the static checker ESC/Java2. Our work was guided by a realistically sized case study developed as demonstrator in the project. We discuss practical difficulties with creating efficient and meaningful JML specifications for automatic verification with a lightweight verification tool such as ESC/Java2, and the potential use of these specifications for PCC.

  16. Low cost omega navigation receiver

    NASA Technical Reports Server (NTRS)

    Lilley, R. W.

    1974-01-01

    The development of a low cost Omega navigation receiver is discussed. Emphasis is placed on the completion and testing of a modular, multipurpose Omega receiver which utilizes a digital memory-aided, phase-locked loop to provide phase measurement data to a variety of applications interfaces. The functional units contained in the prototype device are described. The receiver is capable of receiving and storing phase measurements for up to eight Omega signals and computes two switch-selectable lines of position, displaying this navigation data in chart-recorded form.

  17. Automated pilot advisory system test and evaluation at Manassas Municipal Airport

    NASA Technical Reports Server (NTRS)

    Parks, J. L., Jr.

    1981-01-01

    In cooperation with the Federal Aviation Administration, NASA developed an experimental automated pilot advisory system (APAS) to provide airport and air traffic advisories at high density uncontrolled airports. The APAS concept is to utilize low cost automated systems to provide the necessary information for pilots to more safely plan and execute approach and landing at uncontrolled high density airports. The system is designed to be a natural extension of the procedural visual flight rules system used at uncontrolled airports and, as an advisory system, will enhance the "see-and-be-seen" rule and an evaluation of the APAS concept was obtained from pilots who used the system at the Manassas, Virginia airport. These evaluations and the system performance are presented.

  18. Impact of tether cutting on onboard navigation during the Tethered Satellite Mission-1

    NASA Astrophysics Data System (ADS)

    Pirker, Dana M.

    1989-10-01

    The first Tethered Satellite System mission (TSS-1) is manifested for Shuttle Flight STS-44 in January of 1991. The TSS mission presents a new challenge to engineers, requiring advanced guidance, navigation and control concepts. Current NASA flight rules require that the navigational state of the Orbiter at deorbit burn be known to an accuracy of 20 nautical miles. Response of the Shuttle crew to this contingency may involve cutting the tether prior to a complete retrieval. The degradation of the navigational state accuracy as modelled by Shuttle navigation system is examined. Responses to the loss of communication scenario are proposed for two cases. The first case examines navigational performance during a nominal attitude profile. The second case is identical to the first, with the inclusion of modelled tether electrodynamical forces. Comparisons of trajectories propagated from the onboard navigational state vector and a reference ephemeris state vector were performed, with the tether cut simulated at various points during the mission. Additionally, updates to the onboard navigational state via ground uplinks were provided prior to the assumed loss of communication. Through these comparisons, the onboard navigation state error was determined. Alternative responses result from efforts to minimize this error during the various phases of TSS-1 deployment. These results demonstrated existing NASA flight rules could be violated by cutting the tether, and suggests reponses to a loss of communications contingency to maintain a more accurate navigational state.

  19. 48 CFR 401.371 - AGAR Advisories.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 48 Federal Acquisition Regulations System 4 2011-10-01 2011-10-01 false AGAR Advisories. 401.371... ACQUISITION REGULATION SYSTEM Agency Acquisition Regulations 401.371 AGAR Advisories. The SPE may issue AGAR Advisories, consistent with the policies of the FAR and the AGAR, for the following purposes: (a)...

  20. 48 CFR 401.371 - AGAR Advisories.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 48 Federal Acquisition Regulations System 4 2010-10-01 2010-10-01 false AGAR Advisories. 401.371... ACQUISITION REGULATION SYSTEM Agency Acquisition Regulations 401.371 AGAR Advisories. The SPE may issue AGAR Advisories, consistent with the policies of the FAR and the AGAR, for the following purposes: (a)...

  1. 78 FR 11899 - Invasive Species Advisory Committee

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-02-20

    ... Office of the Secretary Invasive Species Advisory Committee AGENCY: Office of the Secretary, Interior... Invasive Species Advisory Committee. The document contained incorrect dates. This document corrects those.... Meeting of the Invasive Species Advisory Committee (OPEN): Thursday, March 7, 2013 through Friday, March...

  2. 76 FR 10577 - Electricity Advisory Committee Meeting

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-02-25

    ... Electricity Advisory Committee Meeting AGENCY: Office of Electricity Delivery and Energy Reliability... reestablished Electricity Advisory Committee (EAC). The Federal Advisory Committee Act (Pub. L. 92-463, 86 Stat... of Electricity Delivery and Energy Reliability, U.S. Department of Energy, Forrestal Building,...

  3. 75 FR 61454 - Electricity Advisory Committee

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-10-05

    ... Electricity Advisory Committee AGENCY: Department of Energy, Office of Electricity Delivery and Energy...-established DOE Electricity Advisory Committee. The Federal Advisory Committee Act (Pub. L. 92-463, 86 Stat...: David Meyer, Designated Federal Officer, Office of Electricity Delivery and Energy Reliability,...

  4. 77 FR 476 - Science Advisory Board

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-01-05

    ... National Oceanic and Atmospheric Administration (NOAA) Science Advisory Board AGENCY: Office of Oceanic and... agenda of a forthcoming meeting of the NOAA Science Advisory Board. The members will discuss and provide... be reviewed prior to the meeting date. SUPPLEMENTARY INFORMATION: The Science Advisory Board...

  5. 77 FR 58356 - Science Advisory Board

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-09-20

    ... National Oceanic and Atmospheric Administration Science Advisory Board AGENCY: Office of Oceanic and... agenda of a forthcoming meeting of the NOAA Science Advisory Board. The members will discuss and provide... the meeting date. SUPPLEMENTARY INFORMATION: The Science Advisory Board (SAB) was established by...

  6. 75 FR 54854 - Science Advisory Board

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-09-09

    ... National Oceanic and Atmospheric Administration Science Advisory Board AGENCY: Office of Oceanic and... agenda of a forthcoming meeting of the NOAA Science Advisory Board. The members will discuss and provide.... Cynthia Decker, Executive Director, Science Advisory Board, NOAA, Rm. 11230, 1315 East-West...

  7. 76 FR 2672 - Science Advisory Board Meeting

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-01-14

    ... National Oceanic and Atmospheric Administration Science Advisory Board Meeting AGENCY: Office of Oceanic... agenda of a forthcoming meeting of the NOAA Science Advisory Board. The members will discuss and provide... Decker, Executive Director, Science Advisory Board, NOAA, Rm. 11230, 1315 East-West Highway,...

  8. 78 FR 68037 - Science Advisory Board (SAB)

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-11-13

    ... National Oceanic and Atmospheric Administration Science Advisory Board (SAB) AGENCY: Office of Oceanic and... the NOAA Science Advisory Board (SAB) was published in the Federal Register on October 2, 2013.... Cynthia Decker, Executive Director, Science Advisory Board, NOAA, Rm. 11230, 1315 East-West...

  9. Advisory Teacher Service in Queensland Primary Schools.

    ERIC Educational Resources Information Center

    Varley, Peter J.; Cumming, Joy

    The aim of this study was to obtain information about how advisory teachers and persons within schools perceive the operation of the Advisory Teacher Service inaugurated in the Queensland State Department of Education in 1970. The service was provided so that advisory teachers would visit primary schools on invitation of the principal and help…

  10. 75 FR 38086 - Technology Advisory Committee Meeting

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-07-01

    ... COMMISSION Technology Advisory Committee Meeting The Commodity Futures Trading Commission's (``Commission'') Technology Advisory Committee will conduct a meeting on Wednesday, July 14, 2010, beginning at 1 p.m. The...://www.cftc.gov . This will be the first meeting of the reestablished Technology Advisory...

  11. 77 FR 15737 - Technology Advisory Committee

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-03-16

    ... 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 public meeting at the CFTC's...

  12. 77 FR 47592 - Ketchikan Resource Advisory Committee

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-08-09

    ... Forest Service Ketchikan Resource Advisory Committee AGENCY: Forest Service, USDA. ACTION: Notice of meeting. SUMMARY: The Ketchikan Resource Advisory Committee will meet in Ketchikan, Alaska, September 11..., Ketchikan, Alaska. Send written comments to Ketchikan Resource Advisory Committee, c/o District Ranger,...

  13. 75 FR 61693 - Coconino Resource Advisory Committee

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-10-06

    ... 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 National Environmental...

  14. 75 FR 52304 - Coconino Resource Advisory Committee

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-08-25

    ... 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... Coordinator, Coconino Resource Advisory Committee, do Forest Service. USDA, 1824 5. Thompson St.,...

  15. 75 FR 33241 - Coconino Resource Advisory Committee

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-06-11

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

  16. 75 FR 10460 - Yakutat Resource Advisory Committee

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-03-08

    ... Forest Service Yakutat Resource Advisory Committee AGENCY: Forest Service, USDA. ACTION: Notice of meeting. SUMMARY: The Yakutat Resource Advisory Committee will meet in Yakutat, Alaska. The purpose of the meeting is to continue business of the Yakutat Resource Advisory Committee. The committee was formed...

  17. 76 FR 3081 - Sitka Resource Advisory Committee

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-01-19

    ... Forest Service Sitka Resource Advisory Committee AGENCY: Forest Service, USDA. ACTION: Notice of meeting. SUMMARY: The Sitka Resource Advisory Committee will meet in Sitka, Alaska, February 15, 2011. The purpose... to Sitka Resource Advisory Committee, c/o District Ranger, USDA Forest Service, 204 Siginaka...

  18. 75 FR 8916 - Ketchikan Resource Advisory Committee

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-02-26

    ... Forest Service Ketchikan Resource Advisory Committee AGENCY: Forest Service, USDA. ACTION: Notice of meeting. SUMMARY: The Ketchikan Resource Advisory Committee will meet in Ketchikan, Alaska, March 31, 2010..., Alaska. Send written comments to Ketchikan Resource Advisory Committee, do District Ranger, USDA...

  19. 78 FR 64910 - Virginia Resource Advisory Committee

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-10-30

    ... Forest Service Virginia Resource Advisory Committee AGENCY: Forest Service, USDA. ACTION: Notice of meetings. SUMMARY: The Virginia Resource Advisory Committee will meet in Roanoke, Virginia. The committee... 31, 2014: 10 a.m. to 6 p.m. February 7, 2014: 10 a.m. to 6 p.m. All Resource Advisory...

  20. 77 FR 54876 - Colville Resource Advisory Committee

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-09-06

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

  1. 75 FR 46902 - Ketchikan Resource Advisory Committee

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-08-04

    ... Forest Service Ketchikan Resource Advisory Committee AGENCY: Forest Service, USDA. ACTION: Notice of meeting. SUMMARY: The Ketchikan Resource Advisory Committee will meet in Ketchikan, Alaska, August 18..., Ketchikan, Alaska. Send written comments to Ketchikan Resource Advisory Committee, c/o District Ranger,...

  2. 75 FR 54846 - Sitka Resource Advisory Committee

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-09-09

    ... Forest Service Sitka Resource Advisory Committee AGENCY: Forest Service, USDA. ACTION: Notice of meeting. SUMMARY: The Sitka Resource Advisory Committee will meet in Sitka, Alaska, October 8, 2010. The purpose of... Sitka Resource Advisory Committee, c/o District Ranger, USDA Forest Service, 204 Siginaka Way, Sitka,...

  3. 75 FR 39656 - Coconino Resource Advisory Committee

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-07-12

    ... 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..., Coconino Resource Advisory Committee, c/o Forest Service, USDA, 1824 S. Thompson St., Flagstaff,...

  4. 76 FR 23537 - Resource Advisory Committee Meeting

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-04-27

    ... Resource Advisory Committee Meeting AGENCY: Forest Service, USDA. ACTION: Notice of Public Meeting, Sabine National Forest Resource Advisory Committee. SUMMARY: In accordance with the Secure Rural Schools and..., Sabine National Forest Resource Advisory Committee (RAC) meeting will meet as indicated below. DATES:...

  5. 78 FR 45496 - Flathead Resource Advisory Committee

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-07-29

    ... Forest Service Flathead Resource Advisory Committee AGENCY: Forest Service, USDA. ACTION: Notice of meetings. SUMMARY: The Flathead Resource Advisory Committee will meet in Kalispell, Montana on the dates..., 2013--4:00 p.m. to 6:30 p.m. All Resource Advisory Committee meetings are subject to change...

  6. 75 FR 54846 - Ketchikan Resource Advisory Committee

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-09-09

    ... Forest Service Ketchikan Resource Advisory Committee AGENCY: Forest Service, USDA. ACTION: Notice of meeting. SUMMARY: The Ketchikan Resource Advisory Committee will meet in Ketchikan, Alaska, September 30..., Ketchikan, Alaska. Send written comments to Ketchikan Resource Advisory Committee, c/o District Ranger,...

  7. 75 FR 6056 - National Geospatial Advisory Committee

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-02-05

    ... Office of the Secretary National Geospatial Advisory Committee AGENCY: Office of the Secretary, Interior. ACTION: Notice of renewal of National Geospatial Advisory Committee. SUMMARY: This notice is published in... given that the Secretary of the Interior ] has renewed the National Geospatial Advisory Committee....

  8. 78 FR 4120 - Recreation Resource Advisory Committees

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-01-18

    ...; ] DEPARTMENT OF AGRICULTURE Office of the Secretary Recreation Resource Advisory Committees AGENCY: Forest Service, USDA. ACTION: Notice of intent to re-establish the Recreation Resource Advisory Committees... Recreation Resource Advisory Committees (Recreation RACs) pursuant to Section 4 of the Federal...

  9. 77 FR 4238 - Advisory Committee Management

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-01-27

    ... Part 8 RIN 1400-AC64 Advisory Committee Management AGENCY: Department of State. ACTION: Final rule... establish uniform administrative guidelines and management controls for advisory committees established by... of Subjects in 22 CFR Part 8 Advisory Committee Management. Accordingly, under the authority of 22...

  10. 76 FR 4123 - Homeland Security Advisory Council

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-01-24

    ... SECURITY Homeland Security Advisory Council AGENCY: The Office of Policy, DHS. ACTION: Notice of partially closed Federal Advisory Committee Meeting. SUMMARY: The Homeland Security Advisory Council (HSAC) will... . Include docket number in the subject line of the message. Fax: (202) 282-9207 Mail: Homeland...

  11. 75 FR 65295 - Sitka Resource Advisory Committee

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-10-22

    ... Forest Service Sitka Resource Advisory Committee AGENCY: Forest Service, USDA. ACTION: Notice of meeting. SUMMARY: The Sitka Resource Advisory Committee will meet in Sitka, Alaska, November 1, 2010. The purpose... to Sitka Resource Advisory Committee, c/o District Ranger, USDA Forest Service, 204 Siginaka...

  12. Evaluation of STOL navigation avionics

    NASA Technical Reports Server (NTRS)

    Dunn, W. R., Jr.

    1977-01-01

    Research projects, including work on a vector magnetometer for aircraft attitude measurement, are summarized. The earth's electric field phenomena was investigated in its application to aircraft control and navigation. Research on electronic aircraft cabin noise suppression is reviewed and strapdown inertial reference unit technical support is outlined.

  13. Multiple source navigation signal generator

    NASA Astrophysics Data System (ADS)

    Bojda, Petr

    2010-09-01

    The paper presents a FPGA based digital VOR/LOC signal generator. It provides the composite signal, which consists of the particular signals of several predefined navigation sources - VOR beacons. Design of the generator is implemented into the two different FPGA DSP platforms.

  14. Linguistic geometry for autonomous navigation

    SciTech Connect

    Stilman, B.

    1995-09-01

    To discover the inner properties of human expert heuristics, which were successful in a certain class of complex control systems, we develop a formal theory, the Linguistic Geometry. This paper reports two examples of application of Linguistic Geometry to autonomous navigation of aerospace vehicles that demonstrate dramatic search reduction.

  15. Autonomous navigation for artificial satellites

    NASA Technical Reports Server (NTRS)

    Desai, P. S.

    1975-01-01

    An autonomous navigation system is considered that provides a satellite with sufficient numbers and types of sensors, as well as computational hardware and software, to enable it to track itself. Considered are attitude type sensors, meteorological cameras and scanners, one way Doppler, and image correlator.

  16. SMALL CRAFT OPERATION AND NAVIGATION.

    ERIC Educational Resources Information Center

    Louisiana State Dept. of Education, Baton Rouge.

    THIS REFERENCE TEXTBOOK WAS PREPARED FOR USE IN THE FIRST PART OF A TWO-PART COURSE IN MARINE NAVIGATION AND SMALL CRAFT OPERATION ON INLAND AND INTERNATIONAL WATERS. THE MATERIAL WAS DEVELOPED BY AN INDIVIDUAL AUTHOR FOR USE IN TRADE SCHOOL PREPARATORY AND EXTENSION CLASSES FOR MALE ADULTS WHO PLAN TO OPERATE BOATS. IT IS MAINLY CONCERNED WITH…

  17. Self-Navigating THE TERRAIN

    ERIC Educational Resources Information Center

    Anyaso, Hilary Hurd

    2008-01-01

    There's some good news in the academy regarding Black women: They occupy a number of high-profile executive posts in higher education. But whether Black women scholars want to follow in their footsteps or continue in a teaching or research capacity, the bad news is that many feel they are left to navigate the personal and professional politics of…

  18. 33 CFR 263.21 - Small navigation project authority.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 33 Navigation and Navigable Waters 3 2014-07-01 2014-07-01 false Small navigation project authority. 263.21 Section 263.21 Navigation and Navigable Waters CORPS OF ENGINEERS, DEPARTMENT OF THE ARMY, DEPARTMENT OF DEFENSE CONTINUING AUTHORITIES PROGRAMS Navigation Policy § 263.21 Small navigation...

  19. 33 CFR 164.78 - Navigation under way: Towing vessels.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 33 Navigation and Navigable Waters 2 2012-07-01 2012-07-01 false Navigation under way: Towing vessels. 164.78 Section 164.78 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) PORTS AND WATERWAYS SAFETY NAVIGATION SAFETY REGULATIONS § 164.78 Navigation under...

  20. 33 CFR 263.21 - Small navigation project authority.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 33 Navigation and Navigable Waters 3 2013-07-01 2013-07-01 false Small navigation project authority. 263.21 Section 263.21 Navigation and Navigable Waters CORPS OF ENGINEERS, DEPARTMENT OF THE ARMY, DEPARTMENT OF DEFENSE CONTINUING AUTHORITIES PROGRAMS Navigation Policy § 263.21 Small navigation...

  1. 33 CFR 164.13 - Navigation underway: tankers.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 33 Navigation and Navigable Waters 2 2011-07-01 2011-07-01 false Navigation underway: tankers. 164.13 Section 164.13 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) PORTS AND WATERWAYS SAFETY NAVIGATION SAFETY REGULATIONS § 164.13 Navigation underway:...

  2. 33 CFR 164.78 - Navigation under way: Towing vessels.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 33 Navigation and Navigable Waters 2 2014-07-01 2014-07-01 false Navigation under way: Towing vessels. 164.78 Section 164.78 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) PORTS AND WATERWAYS SAFETY NAVIGATION SAFETY REGULATIONS § 164.78 Navigation under...

  3. 33 CFR 263.21 - Small navigation project authority.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 33 Navigation and Navigable Waters 3 2011-07-01 2011-07-01 false Small navigation project authority. 263.21 Section 263.21 Navigation and Navigable Waters CORPS OF ENGINEERS, DEPARTMENT OF THE ARMY, DEPARTMENT OF DEFENSE CONTINUING AUTHORITIES PROGRAMS Navigation Policy § 263.21 Small navigation...

  4. 33 CFR 164.78 - Navigation under way: Towing vessels.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 33 Navigation and Navigable Waters 2 2013-07-01 2013-07-01 false Navigation under way: Towing vessels. 164.78 Section 164.78 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) PORTS AND WATERWAYS SAFETY NAVIGATION SAFETY REGULATIONS § 164.78 Navigation under...

  5. 33 CFR 164.13 - Navigation underway: tankers.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 33 Navigation and Navigable Waters 2 2013-07-01 2013-07-01 false Navigation underway: tankers. 164.13 Section 164.13 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) PORTS AND WATERWAYS SAFETY NAVIGATION SAFETY REGULATIONS § 164.13 Navigation underway:...

  6. 33 CFR 164.13 - Navigation underway: tankers.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 33 Navigation and Navigable Waters 2 2012-07-01 2012-07-01 false Navigation underway: tankers. 164.13 Section 164.13 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) PORTS AND WATERWAYS SAFETY NAVIGATION SAFETY REGULATIONS § 164.13 Navigation underway:...

  7. 33 CFR 164.13 - Navigation underway: tankers.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 33 Navigation and Navigable Waters 2 2010-07-01 2010-07-01 false Navigation underway: tankers. 164.13 Section 164.13 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) PORTS AND WATERWAYS SAFETY NAVIGATION SAFETY REGULATIONS § 164.13 Navigation underway:...

  8. 33 CFR 263.21 - Small navigation project authority.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 33 Navigation and Navigable Waters 3 2012-07-01 2012-07-01 false Small navigation project authority. 263.21 Section 263.21 Navigation and Navigable Waters CORPS OF ENGINEERS, DEPARTMENT OF THE ARMY, DEPARTMENT OF DEFENSE CONTINUING AUTHORITIES PROGRAMS Navigation Policy § 263.21 Small navigation...

  9. 33 CFR 164.13 - Navigation underway: tankers.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 33 Navigation and Navigable Waters 2 2014-07-01 2014-07-01 false Navigation underway: tankers. 164.13 Section 164.13 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) PORTS AND WATERWAYS SAFETY NAVIGATION SAFETY REGULATIONS § 164.13 Navigation underway:...

  10. 33 CFR 263.21 - Small navigation project authority.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 33 Navigation and Navigable Waters 3 2010-07-01 2010-07-01 false Small navigation project authority. 263.21 Section 263.21 Navigation and Navigable Waters CORPS OF ENGINEERS, DEPARTMENT OF THE ARMY, DEPARTMENT OF DEFENSE CONTINUING AUTHORITIES PROGRAMS Navigation Policy § 263.21 Small navigation...

  11. 33 CFR 401.54 - Interference with navigation aids.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 33 Navigation and Navigable Waters 3 2013-07-01 2013-07-01 false Interference with navigation aids. 401.54 Section 401.54 Navigation and Navigable Waters SAINT LAWRENCE SEAWAY DEVELOPMENT CORPORATION... with navigation aids. (a) Aids to navigation shall not be interfered with or used as moorings. (b)...

  12. 33 CFR 401.54 - Interference with navigation aids.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 33 Navigation and Navigable Waters 3 2010-07-01 2010-07-01 false Interference with navigation aids. 401.54 Section 401.54 Navigation and Navigable Waters SAINT LAWRENCE SEAWAY DEVELOPMENT CORPORATION... with navigation aids. (a) Aids to navigation shall not be interfered with or used as moorings. (b)...

  13. 33 CFR 67.35-10 - Private aids to navigation.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 33 Navigation and Navigable Waters 1 2014-07-01 2014-07-01 false Private aids to navigation. 67.35-10 Section 67.35-10 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY AIDS TO NAVIGATION AIDS TO NAVIGATION ON ARTIFICIAL ISLANDS AND FIXED STRUCTURES Applications §...

  14. 33 CFR 401.54 - Interference with navigation aids.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 33 Navigation and Navigable Waters 3 2011-07-01 2011-07-01 false Interference with navigation aids. 401.54 Section 401.54 Navigation and Navigable Waters SAINT LAWRENCE SEAWAY DEVELOPMENT CORPORATION... with navigation aids. (a) Aids to navigation shall not be interfered with or used as moorings. (b)...

  15. 33 CFR 67.35-10 - Private aids to navigation.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 33 Navigation and Navigable Waters 1 2012-07-01 2012-07-01 false Private aids to navigation. 67.35-10 Section 67.35-10 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY AIDS TO NAVIGATION AIDS TO NAVIGATION ON ARTIFICIAL ISLANDS AND FIXED STRUCTURES Applications §...

  16. 33 CFR 67.35-10 - Private aids to navigation.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 33 Navigation and Navigable Waters 1 2011-07-01 2011-07-01 false Private aids to navigation. 67.35-10 Section 67.35-10 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY AIDS TO NAVIGATION AIDS TO NAVIGATION ON ARTIFICIAL ISLANDS AND FIXED STRUCTURES Applications §...

  17. 33 CFR 67.35-10 - Private aids to navigation.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 33 Navigation and Navigable Waters 1 2010-07-01 2010-07-01 false Private aids to navigation. 67.35-10 Section 67.35-10 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY AIDS TO NAVIGATION AIDS TO NAVIGATION ON ARTIFICIAL ISLANDS AND FIXED STRUCTURES Applications §...

  18. 33 CFR 67.35-10 - Private aids to navigation.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 33 Navigation and Navigable Waters 1 2013-07-01 2013-07-01 false Private aids to navigation. 67.35-10 Section 67.35-10 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY AIDS TO NAVIGATION AIDS TO NAVIGATION ON ARTIFICIAL ISLANDS AND FIXED STRUCTURES Applications §...

  19. 33 CFR 401.54 - Interference with navigation aids.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 33 Navigation and Navigable Waters 3 2012-07-01 2012-07-01 false Interference with navigation aids. 401.54 Section 401.54 Navigation and Navigable Waters SAINT LAWRENCE SEAWAY DEVELOPMENT CORPORATION... with navigation aids. (a) Aids to navigation shall not be interfered with or used as moorings. (b)...

  20. 33 CFR 401.54 - Interference with navigation aids.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 33 Navigation and Navigable Waters 3 2014-07-01 2014-07-01 false Interference with navigation aids. 401.54 Section 401.54 Navigation and Navigable Waters SAINT LAWRENCE SEAWAY DEVELOPMENT CORPORATION... with navigation aids. (a) Aids to navigation shall not be interfered with or used as moorings. (b)...

  1. 75 FR 26846 - Genomic Medicine Program Advisory Committee; Notice of Meeting

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-05-12

    ... (VA) gives notice under Public Law 92-463 (Federal Advisory Committee Act) that the Genomic Medicine... enhance development of tests and treatments for diseases particularly relevant to Veterans. The Committee... concept for genome-phenome associations using the electronic health record; an overview of an...

  2. 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. PMID:23209009

  3. Concept Maps for Web-Based Applications. ERIC Technical Report.

    ERIC Educational Resources Information Center

    Milam, John H., Jr.; Santo, Susan A.; Heaton, Lisa A.

    This study examined the use of concept maps for Web-based applications in higher education. The purpose of the project was to design concept maps that could serve as prototypes for navigating and searching Internet resources. It also explored the value of concept mapping as a method of bibliographic retrieval for the ERIC database. Following an…

  4. 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...

  5. 32 CFR 644.3 - Navigation Projects.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    .... Requirements for navigation aids should be coordinated by the District Engineer with the local Coast Guard... construction and borrow areas. (3) In navigation-only projects, the right to permanently flood should...

  6. 32 CFR 644.3 - Navigation projects.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... maintenance. Requirements for navigation aids should be coordinated by the District Engineer with the local..., and temporary construction and borrow areas. (3) In navigation-only projects, the right to...

  7. 33 CFR 66.05-100 - Designation of navigable waters as State waters for private aids to navigation.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... as State waters for private aids to navigation. 66.05-100 Section 66.05-100 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY AIDS TO NAVIGATION PRIVATE AIDS TO NAVIGATION State Aids to Navigation § 66.05-100 Designation of navigable waters as State waters for private aids...

  8. 33 CFR 66.05-100 - Designation of navigable waters as State waters for private aids to navigation.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... as State waters for private aids to navigation. 66.05-100 Section 66.05-100 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY AIDS TO NAVIGATION PRIVATE AIDS TO NAVIGATION State Aids to Navigation § 66.05-100 Designation of navigable waters as State waters for private aids...

  9. 33 CFR 66.05-100 - Designation of navigable waters as State waters for private aids to navigation.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... as State waters for private aids to navigation. 66.05-100 Section 66.05-100 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY AIDS TO NAVIGATION PRIVATE AIDS TO NAVIGATION State Aids to Navigation § 66.05-100 Designation of navigable waters as State waters for private aids...

  10. 33 CFR 66.05-100 - Designation of navigable waters as State waters for private aids to navigation.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... as State waters for private aids to navigation. 66.05-100 Section 66.05-100 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY AIDS TO NAVIGATION PRIVATE AIDS TO NAVIGATION State Aids to Navigation § 66.05-100 Designation of navigable waters as State waters for private aids...

  11. 33 CFR 66.05-100 - Designation of navigable waters as State waters for private aids to navigation.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... as State waters for private aids to navigation. 66.05-100 Section 66.05-100 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY AIDS TO NAVIGATION PRIVATE AIDS TO NAVIGATION State Aids to Navigation § 66.05-100 Designation of navigable waters as State waters for private aids...

  12. Aerospace Safety Advisory Panel

    NASA Astrophysics Data System (ADS)

    1989-03-01

    This report provides findings, conclusions and recommendations regarding the National Space Transportation System (NSTS), the Space Station Freedom Program (SSFP), aeronautical projects and other areas of NASA activities. The main focus of the Aerospace Safety Advisory Panel (ASAP) during 1988 has been monitoring and advising NASA and its contractors on the Space Transportation System (STS) recovery program. NASA efforts have restored the flight program with a much better management organization, safety and quality assurance organizations, and management communication system. The NASA National Space Transportation System (NSTS) organization in conjunction with its prime contractors should be encouraged to continue development and incorporation of appropriate design and operational improvements which will further reduce risk. The data from each Shuttle flight should be used to determine if affordable design and/or operational improvements could further increase safety. The review of Critical Items (CILs), Failure Mode Effects and Analyses (FMEAs) and Hazard Analyses (HAs) after the Challenger accident has given the program a massive data base with which to establish a formal program with prioritized changes.

  13. Aerospace Safety Advisory Panel

    NASA Technical Reports Server (NTRS)

    1989-01-01

    This report provides findings, conclusions and recommendations regarding the National Space Transportation System (NSTS), the Space Station Freedom Program (SSFP), aeronautical projects and other areas of NASA activities. The main focus of the Aerospace Safety Advisory Panel (ASAP) during 1988 has been monitoring and advising NASA and its contractors on the Space Transportation System (STS) recovery program. NASA efforts have restored the flight program with a much better management organization, safety and quality assurance organizations, and management communication system. The NASA National Space Transportation System (NSTS) organization in conjunction with its prime contractors should be encouraged to continue development and incorporation of appropriate design and operational improvements which will further reduce risk. The data from each Shuttle flight should be used to determine if affordable design and/or operational improvements could further increase safety. The review of Critical Items (CILs), Failure Mode Effects and Analyses (FMEAs) and Hazard Analyses (HAs) after the Challenger accident has given the program a massive data base with which to establish a formal program with prioritized changes.

  14. Aerospace safety advisory panel

    NASA Technical Reports Server (NTRS)

    1995-01-01

    The Aerospace Safety Advisory Panel (ASAP) monitored NASA's activities and provided feedback to the NASA Administrator, other NASA officials and Congress throughout the year. Particular attention was paid to the Space Shuttle, its launch processing and planned and potential safety improvements. The Panel monitored Space Shuttle processing at the Kennedy Space Center (KSC) and will continue to follow it as personnel reductions are implemented. There is particular concern that upgrades in hardware, software, and operations with the potential for significant risk reduction not be overlooked due to the extraordinary budget pressures facing the agency. The authorization of all of the Space Shuttle Main Engine (SSME) Block II components portends future Space Shuttle operations at lower risk levels and with greater margins for handling unplanned ascent events. Throughout the year, the Panel attempted to monitor the safety activities related to the Russian involvement in both space and aeronautics programs. This proved difficult as the working relationships between NASA and the Russians were still being defined as the year unfolded. NASA's concern for the unique safety problems inherent in a multi-national endeavor appears appropriate. Actions are underway or contemplated which should be capable of identifying and rectifying problem areas. The balance of this report presents 'Findings and Recommendations' (Section 2), 'Information in Support of Findings and Recommendations' (Section 3) and Appendices describing Panel membership, the NASA response to the March 1994 ASAP report, and a chronology of the panel's activities during the reporting period (Section 4).

  15. Wind Advisory System

    NASA Technical Reports Server (NTRS)

    Curto, Paul A. (Inventor); Brown, Gerald E. (Inventor); Zysko, Jan A. (Inventor)

    2001-01-01

    The present invention is a two-part wind advisory system comprising a ground station at an airfield and an airborne unit placed inside an aircraft. The ground station monitors wind conditions (wind speed, wind direction, and wind gust) at the airfield and transmits the wind conditions and an airfield ID to the airborne unit. The airborne unit identifies the airfield by comparing the received airfield ID with airfield IDs stored in a database. The airborne unit also calculates the headwind and crosswind for each runway in both directions at the airfield using the received wind conditions and runway information stored in the database. The airborne unit then determines a recommended runway for takeoff and landing operations of the aircraft based on th runway having the greatest headwind value and displays the airfield ID, wind conditions, and recommended runway to the pilot. Another embodiment of the present invention includes a wireless internet based airborne unit in which the airborne unit can receive the wind conditions from the ground station over the internet.

  16. 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.

  17. 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.

  18. 34 CFR 461.53 - May a State establish an advisory body other than a State advisory council?

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 34 Education 3 2011-07-01 2011-07-01 false May a State establish an advisory body other than a... May a State establish an advisory body other than a State advisory council? (a) A State may establish an advisory body that is funded solely from non-Federal sources. (b) The advisory body described...

  19. 34 CFR 461.53 - May a State establish an advisory body other than a State advisory council?

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 34 Education 3 2010-07-01 2010-07-01 false May a State establish an advisory body other than a... May a State establish an advisory body other than a State advisory council? (a) A State may establish an advisory body that is funded solely from non-Federal sources. (b) The advisory body described...

  20. 46 CFR 129.430 - Navigational lighting.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 46 Shipping 4 2012-10-01 2012-10-01 false Navigational lighting. 129.430 Section 129.430 Shipping... INSTALLATIONS Lighting Systems § 129.430 Navigational lighting. (a) Each vessel of less than 100 gross tons and less than 19.8 meters (65 feet) in length must have navigational lighting in compliance with...

  1. 46 CFR 129.430 - Navigational lighting.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 46 Shipping 4 2013-10-01 2013-10-01 false Navigational lighting. 129.430 Section 129.430 Shipping... INSTALLATIONS Lighting Systems § 129.430 Navigational lighting. (a) Each vessel of less than 100 gross tons and less than 19.8 meters (65 feet) in length must have navigational lighting in compliance with...

  2. 46 CFR 129.430 - Navigational lighting.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 46 Shipping 4 2014-10-01 2014-10-01 false Navigational lighting. 129.430 Section 129.430 Shipping... INSTALLATIONS Lighting Systems § 129.430 Navigational lighting. (a) Each vessel of less than 100 gross tons and less than 19.8 meters (65 feet) in length must have navigational lighting in compliance with...

  3. 46 CFR 129.430 - Navigational lighting.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 46 Shipping 4 2010-10-01 2010-10-01 false Navigational lighting. 129.430 Section 129.430 Shipping... INSTALLATIONS Lighting Systems § 129.430 Navigational lighting. (a) Each vessel of less than 100 gross tons and less than 19.8 meters (65 feet) in length must have navigational lighting in compliance with...

  4. 46 CFR 129.430 - Navigational lighting.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 46 Shipping 4 2011-10-01 2011-10-01 false Navigational lighting. 129.430 Section 129.430 Shipping... INSTALLATIONS Lighting Systems § 129.430 Navigational lighting. (a) Each vessel of less than 100 gross tons and less than 19.8 meters (65 feet) in length must have navigational lighting in compliance with...

  5. Shuttle OFT Level C navigation requirements

    NASA Technical Reports Server (NTRS)

    1980-01-01

    Detailed requirements for the orbital operations computer loads, OPS 2, and OPS 8 are given. These requirements represent the total on-orbit/rendezvous navigation baseline requirements for the following principal functions: on-orbital/rendezvous navigation sequencer; on-orbit/rendezvous UPP sequencer; on-orbit rendezvous navigation; on-orbit prediction; on-orbit user parameter processing; and landing Site update.

  6. Autonomous Guidance, Navigation and Control

    NASA Astrophysics Data System (ADS)

    Bordano, A. J.; McSwain, G. G.; Fernandes, S. T.

    The NASA Autonomous Guidance, Navigation and Control (GN&C) Bridging program is reviewed to demonstrate the program plan and GN&C systems for the Space Shuttle. The ascent CN&C system is described in terms of elements such as the general-purpose digital computers, sensors for the navigation subsystem, the guidance-system software, and the flight-control subsystem. Balloon-based and lidar wind soundings are used for operations assessment on the day of launch, and the guidance software is based on dedicated units for atmospheric powered flight, vacuum powered flight, and abort-specific situations. Optimization of the flight trajectories is discussed, and flight-control responses are illustrated for wavelengths of 500-6000 m. Alternate sensors are used for load relief, and adaptive GN&C systems based on alternate gain synthesis are used for systems failures.

  7. NAVIGATION IN TOTAL KNEE ARTHROPLASTY

    PubMed Central

    da Mota e Albuquerque, Roberto Freire

    2015-01-01

    Navigation was the most significant advance in instrumentation for total knee arthroplasty over the last decade. It provides surgeons with a precision tool for carrying out surgery, with the possibility of intraoperative simulation and objective control over various anatomical and surgical parameters and references. Since the first systems, which were basically used to control the alignment of bone cutting referenced to the mechanical axis of the lower limb, many other surgical steps have been incorporated, such as component rotation, ligament balancing and arranging the symmetry of flexion and extension spaces, among others. Its efficacy as a precision tool with an effective capacity for promoting better alignment of the lower-limb axis has been widely proven in the literature, but the real value of optimized alignment and the impact of navigation on clinical results and the longevity of arthroplasty have yet to be established. PMID:27026979

  8. 78 FR 67362 - Federal Advisory Committee Act; Technological Advisory Council

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-11-12

    ..., this notice advises interested persons that the Federal Communications Commission's (FCC) Technological...-418-0807; Walter.Johnston@FCC.gov . SUPPLEMENTARY INFORMATION: The FCC Technological Advisory Council... FCC will attempt to accommodate as many people as possible. However, admittance will be limited...

  9. 78 FR 55255 - Federal Advisory Committee Act; Technological Advisory Council

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-09-10

    ..., this notice advises interested persons that the Federal Communications Commission's (FCC) Technological....Johnston@FCC.gov . SUPPLEMENTARY INFORMATION: The FCC Technological Advisory Council will discuss progress on work areas announced at its initial meeting of the year on March 11, 2013. The FCC will attempt...

  10. 77 FR 30289 - Federal Advisory Committee Act; Technological Advisory Council

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-05-22

    ..., this notice advises interested persons that the Federal Communications Commission's (FCC) Technological...-418-0807; Walter.Johnston@FCC.gov . SUPPLEMENTARY INFORMATION: The FCC Technological Advisory Council... issues that have been uncovered by TAC members while undertaking this work. The FCC will attempt...

  11. 77 FR 52332 - Federal Advisory Committee Act; Technological Advisory Council

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-08-29

    ..., this notice advises interested persons that the Federal Communications Commission's (FCC) Technological... Division, 202-418-0807; Walter.Johnston@FCC.gov . SUPPLEMENTARY INFORMATION: The FCC Technological Advisory... TAC members while undertaking this work. The FCC will attempt to accommodate as many people...

  12. 76 FR 14009 - Federal Advisory Committee Act; Technological Advisory Council

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-03-15

    ..., this notice advises interested persons that the Federal Communications Commission's (FCC) Technological... Division, 202-418-0807; Walter.Johnston@FCC.gov . SUPPLEMENTARY INFORMATION: Technical Advisory Council... to date and discuss possible further work. The FCC will attempt to accommodate as many people...

  13. 76 FR 58513 - Federal Advisory Committee Act; Technological Advisory Council

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-09-21

    ..., this notice advises interested persons that the Federal Communications Commission's (FCC) Technological... Division, 202-418-0807; Walter.Johnston@FCC.gov . SUPPLEMENTARY INFORMATION: Technical Advisory Council... to date and discuss possible further work. The FCC will attempt to accommodate as many people...

  14. 77 FR 12839 - Federal Advisory Committee Act; Technological Advisory Council

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-03-02

    ..., this notice advises interested persons that the Federal Communications Commission's (FCC) Technological..., 202-418-0807; Walter.Johnston@FCC.gov . SUPPLEMENTARY INFORMATION: Technical Advisory Council members... discuss potential work programs for 2012 and define work groups to support planned work. The FCC...

  15. 78 FR 69991 - Advisory Committee; Veterinary Medicine Advisory Committee; Termination

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-11-22

    ... established on April 24, 1984 (49 FR 20809; May 17, 1984). The purpose of the Committee was to review and... HUMAN SERVICES Food and Drug Administration 21 CFR Part 14 Advisory Committee; Veterinary Medicine... Food and Drug Administration (FDA) is announcing the termination of the Veterinary Medicine...

  16. 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.

  17. 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.

  18. 77 FR 42637 - Navigation and Navigable Waters; Technical, Organizational, and Conforming Amendments; Corrections

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-07-20

    ... 21, 2012 (77 FR 37305), the Coast Guard published a final rule entitled ``Navigation and Navigable... Register of Thursday, June 21, 2012 (77 FR 37305). The regulations related to technical, organizational and... SECURITY Coast Guard 33 CFR Parts 84 and 115 RIN 1625-AB86 Navigation and Navigable Waters;...

  19. 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

    ..., Navigational Aids, Mapping Systems and Related Software; Institution of Investigation Pursuant to 19 U.S.C... and display systems, radar systems, navigational aids, mapping systems and related software by reason... products, including GPS devices, navigation and display systems, radar systems, navigational aids,...

  20. Orientation in birds. Olfactory navigation.

    PubMed

    Papi, F

    1991-01-01

    Research work on the olfactory navigation of birds, which has only recently attracted attention, has shown that many wild species rely on an osmotactic mechanism to find food sources, even at a considerable distance. The homing pigeon, the only bird to have been thoroughly investigated with respect to olfactory navigation, has been found to rely on local odours for homeward orientation, and to integrate olfactory cues perceived during passive transportation with those picked up at the release site. It is possible to design experiments in which birds are given false olfactory information, and predictions about the effects of this can be made and tested. Pigeons are able to home from unfamiliar sites because they acquire an olfactory map extending beyond the area they have flown over. The olfactory map is built up by associating wind-borne odours with the direction from which they come; this was shown by experiments which aimed to prevent, limit or alter this association. One aim of the research work has been to test whether pigeons flying over unfamiliar areas also rely or can learn to rely on non-olfactory cues, depending on their local availability, and/or on the methods of rearing and training applied to them. Various evaluations have been made of the results; the most recent experiments, however, confirm that pigeons do derive directional information from atmospheric odours. A neurobiological approach is also in progress; its results show that some telencephalic areas are involved in orientation and olfactory navigation. The lack of any knowledge about the distribution and chemical nature of the odorants which allow pigeons to navigate hinders progress in this area of research.

  1. Dilution of Precision-Based Lunar Navigation Assessment for Dynamic Position Fixing

    NASA Technical Reports Server (NTRS)

    Sands, Obed S.; Connolly, Joseph W.; Welch, Bryan W.; Carpenter, James R.; Ely, Todd A.; Berry, Kevin

    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 contrast to Apollo missions, which were limited to the near-side equatorial region of the moon, missions under the Exploration Systems Initiative will require navigation on the moon's limb and far-side. As these regions have poor Earth visibility, a navigation system comprised solely of Earth-based tracking stations will not provide adequate navigation solutions in these areas. In this paper, a Dilution of Precision (DoP) based analysis of the performance of a network of Moon orbiting satellites is provided. The analysis extends previous analysis of a Lunar Network (LN) of navigation satellites by providing an assessment of the capability associated with a variety of assumptions. These assumptions are with regard to the navigation receiver and satellite visibility. The assessment is accomplished by making appropriately formed estimates of DoP. Different adaptations of DoP (i.e., GDoP, PDoP, etc.) are associated with a different set of assumptions regarding augmentations to the navigation receiver or transceiver.

  2. Astronomical Methods in Aerial Navigation

    NASA Technical Reports Server (NTRS)

    Beij, K Hilding

    1925-01-01

    The astronomical method of determining position is universally used in marine navigation and may also be of service in aerial navigation. The practical application of the method, however, must be modified and adapted to conform to the requirements of aviation. Much of this work of adaptation has already been accomplished, but being scattered through various technical journals in a number of languages, is not readily available. This report is for the purpose of collecting under one cover such previous work as appears to be of value to the aerial navigator, comparing instruments and methods, indicating the best practice, and suggesting future developments. The various methods of determining position and their application and value are outlined, and a brief resume of the theory of the astronomical method is given. Observation instruments are described in detail. A complete discussion of the reduction of observations follows, including a rapid method of finding position from the altitudes of two stars. Maps and map cases are briefly considered. A bibliography of the subject is appended.

  3. Celestial Navigation for the Novice

    NASA Astrophysics Data System (ADS)

    Sadler, Philip M.

    2011-01-01

    What kinds of astronomical lab activities can introductory astronomy students carry out easily in daytime? The most impressive is the determination of their latitude and longitude from observations of the sun. The "shooting of a noon sight” and its "reduction to a position” is a technique still practiced by navigators in this age of GPS. Indeed, the U.S. Coast Guard exams for ocean-going licenses and include celestial navigation. These techniques continue to be used by the military and by private sailors as a backup to electronic navigation systems. We present a method to establish one's latitude and longitude to better than 30 miles from measurements of the sun's altitude that is easily within the capability non-science majors. This is a practical application of astronomy in use the world over. The streamlined method used is based on an easy-to-build protractor and string quadrant. Participants will leave with all materials to conduct this activity in their own classroom.

  4. Onboard navigation rendezvous expert system

    NASA Astrophysics Data System (ADS)

    Kocen, Michelle

    The Onboard Navigation rendezvous expert system is designed to aid the ground flight controller in monitoring the shuttle onboard navigation system. The system is designed to keep track of the navigation sensors and relative state vectors. In addition, the system also keeps an event log and fills out forms usually handled by the flight controller. This expert system is one of the few rendezvous specific systems being developed for the Mission Control Center. The expert system has been in development for six years. Through these years the system has seen hardware, software, and personnel changes. Initial development was done by the Information Systems Directorate (ISD) and Mission Operations Directorate (MOD) at Johnson Space Center. As of October 1, 1991 the system has been turned over to MOD. The system is completely developed except for some minor adjustments to the user interface. The rule base is in the verification stage with total certification of the system due to be completed by May 1992. Test cases for verification are obtained by saving data used for flight controller integrated simulations. The actual data comes from both the shuttle mission simulator and the Mission Control Center Computer. So far no actual flight data has been available. This paper covers all aspects of the system from the development history to the current hardware, software, and use of the system.

  5. 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.

  6. 78 FR 17640 - National Climate Assessment and Development Advisory Committee

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-03-22

    ... National Oceanic and Atmospheric Administration National Climate Assessment and Development Advisory... the National Climate Assessment and Development Advisory Committee (NCADAC) for a six-month period.... Decker, Designated Federal Officer, National Climate Assessment and Development Advisory Committee,...

  7. 75 FR 62369 - Technology Innovation Program Advisory Board

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-10-08

    ... National Institute of Standards and Technology Technology Innovation Program Advisory Board AGENCY.... SUMMARY: The Technology Innovation Program Advisory Board, National Institute of Standards and Technology... INFORMATION: The Technology Innovation Program (TIP) Advisory Board is composed of ten members appointed...

  8. 75 FR 22553 - Technology Innovation Program Advisory Board

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-04-29

    ... National Institute of Standards and Technology Technology Innovation Program Advisory Board AGENCY.... SUMMARY: The Technology Innovation Program Advisory Board, National Institute of Standards and Technology... Technology Innovation Program (TIP) Advisory Board is composed of ten members appointed by the Director...

  9. 77 FR 67013 - Blood Products Advisory Committee; Notice of Meeting

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-11-08

    ... HUMAN SERVICES Food and Drug Administration Blood Products Advisory Committee; Notice of Meeting AGENCY... public. Name of Committee: Blood Products Advisory Committee. General Function of the Committee: To... links: December 4, 2012: Blood Products Advisory Committee Day 1:...

  10. 76 FR 39405 - Blood Products Advisory Committee; Notice of Meeting

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-07-06

    ... HUMAN SERVICES Food and Drug Administration Blood Products Advisory Committee; Notice of Meeting AGENCY... public. Name of Committee: Blood Products Advisory Committee. General Function of the Committee: To... available at the following links. Blood Products Advisory Committee Day 1:...

  11. 78 FR 38723 - National Infrastructure Advisory Council; Meetings

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-06-27

    ... SECURITY National Infrastructure Advisory Council; Meetings AGENCY: National Protection and Programs...: The National Infrastructure Advisory Council (NIAC) will meet July 17, August 14, and September 17... FURTHER INFORMATION CONTACT: Nancy Wong, National Infrastructure Advisory Council Designated...

  12. 76 FR 14647 - Sabine National Forest Resource Advisory Committee Meeting

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-03-17

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

  13. 76 FR 19952 - Davy Crockett National Forest Resource Advisory Committee

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-04-11

    ... Davy Crockett National Forest Resource Advisory Committee AGENCY: Forest Service, USDA. ACTION: Notice of Public Meeting, Davy Crockett National Forest Resource Advisory Committee. SUMMARY: In accordance.... Department of Agriculture, Forest Service, Davy Crockett National Forest Resource Advisory Committee...

  14. 77 FR 57559 - National Technical Information Service Advisory Board

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-09-18

    ... National Technical Information Service National Technical Information Service Advisory Board AGENCY: National Technical Information Service, Commerce. ACTION: Notice of open meeting. SUMMARY: This notice announces the next meeting of the National Technical Information Service Advisory Board (the Advisory...

  15. 78 FR 16255 - National Technical Information Service Advisory Board

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-03-14

    ... National Technical Information Service National Technical Information Service Advisory Board AGENCY: National Technical Information Service, Commerce. ACTION: Notice of Open Meeting. SUMMARY: This notice announces the next meeting of the National Technical Information Service Advisory Board (the Advisory...

  16. 76 FR 2348 - National Technical Information Service Advisory Board

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-01-13

    ... National Technical Information Service National Technical Information Service Advisory Board AGENCY: National Technical Information Service, Commerce. ACTION: Notice of open meeting. SUMMARY: This notice announces the next meeting of the National Technical Information Service Advisory Board (the Advisory...

  17. 76 FR 43988 - National Technical Information Service Advisory Board

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-07-22

    ... National Technical Information Service National Technical Information Service Advisory Board AGENCY: National Technical Information Service, Commerce. ACTION: Notice of open meeting. SUMMARY: This notice announces the next meeting of the National Technical Information Service Advisory Board (the Advisory...

  18. 78 FR 61337 - National Technical Information Service Advisory Board

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-10-03

    ... National Technical Information Service National Technical Information Service Advisory Board AGENCY: National Technical Information Service, Commerce. ACTION: Notice of open meeting SUMMARY: This notice announces the next meeting of the National Technical Information Service Advisory Board (the Advisory...

  19. 77 FR 779 - National Technical Information Service Advisory Board

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-01-06

    ... National Technical Information Service National Technical Information Service Advisory Board AGENCY: National Technical Information Service, Commerce. ACTION: Notice of open meeting. SUMMARY: This notice announces the next meeting of the National Technical Information Service Advisory Board (the Advisory...

  20. 75 FR 10204 - Collaborative Forest Landscape Restoration Advisory Committee

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-03-05

    ...; ] DEPARTMENT OF AGRICULTURE Office of the Secretary Collaborative Forest Landscape Restoration Advisory... Forest Landscape Restoration Advisory Committee and call for nominations. SUMMARY: The Secretary of Agriculture intends to establish the Collaborative Forest Landscape Restoration Advisory Committee...

  1. 78 FR 12056 - National Environmental Justice Advisory Council

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-02-21

    ... AGENCY National Environmental Justice Advisory Council AGENCY: Environmental Protection Agency (EPA). ACTION: Request for Nominations to the National Environmental Justice Advisory Council (NEJAC). SUMMARY... candidates to be considered for appointment to its National Environmental Justice Advisory Council...

  2. 75 FR 3959 - Railroad Safety Advisory Committee; Notice of Meeting

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-01-25

    ... TRANSPORTATION Federal Railroad Administration Railroad Safety Advisory Committee; Notice of Meeting AGENCY... Railroad Safety Advisory Committee (RSAC) Meeting. SUMMARY: FRA announces the forty-first meeting of the RSAC, a Federal advisory committee that develops railroad safety regulations through a...

  3. 77 FR 28421 - Railroad Safety Advisory Committee; Charter Renewal

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-05-14

    ... Federal Railroad Administration Railroad Safety Advisory Committee; Charter Renewal AGENCY: Federal... of the Railroad Safety Advisory Committee (RSAC). SUMMARY: FRA announces the charter renewal of the RSAC, a Federal Advisory Committee that develops railroad safety regulations through a...

  4. 75 FR 27053 - Railroad Safety Advisory Committee; Charter Renewal

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-05-13

    ... Federal Railroad Administration Railroad Safety Advisory Committee; Charter Renewal AGENCY: Federal... of the Railroad Safety Advisory Committee (RSAC). SUMMARY: FRA announces the charter renewal of the RSAC, a Federal Advisory Committee that develops railroad safety regulations through a...

  5. 75 FR 50797 - Motor Carrier Safety Advisory Committee Public Meeting

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-08-17

    ... Federal Motor Carrier Safety Administration Motor Carrier Safety Advisory Committee Public Meeting AGENCY: Federal Motor Carrier Safety Administration (FMCSA), DOT. ACTION: Notice of Motor Carrier Safety Advisory Committee Meeting. SUMMARY: FMCSA announces that its Motor Carrier Safety Advisory Committee (MCSAC)...

  6. 75 FR 72863 - Motor Carrier Safety Advisory Committee Public Meeting

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-11-26

    ... Federal Motor Carrier Safety Administration Motor Carrier Safety Advisory Committee Public Meeting AGENCY: Federal Motor Carrier Safety Administration, DOT. ACTION: Notice of Motor Carrier Safety Advisory Committee Meeting. SUMMARY: FMCSA announces that the Agency's Motor Carrier Safety Advisory Committee...

  7. 76 FR 31945 - Advanced Scientific Computing Advisory Committee

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-06-02

    ... Advanced Scientific Computing Advisory Committee AGENCY: Department of Energy, Office of Science. ACTION... the Advanced Scientific Computing Advisory Committee (ASCAC). The Federal Advisory Committee Act (Pub... INFORMATION CONTACT: Melea Baker, Office of Advanced Scientific Computing Research; SC-21/Germantown...

  8. 78 FR 20685 - Aviation Security Advisory Committee (ASAC) Meeting

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-04-05

    ... SECURITY Transportation Security Administration Aviation Security Advisory Committee (ASAC) Meeting AGENCY... Committee Meeting. SUMMARY: The Aviation Security Advisory Committee (ASAC) will meet in Arlington, VA. This.... L. 92-463). The Aviation Security Advisory Committee (ASAC) provides advice and...

  9. 77 FR 56909 - Aviation Rulemaking Advisory Committee (ARAC); Renewal

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-09-14

    ... Federal Aviation Administration Aviation Rulemaking Advisory Committee (ARAC); Renewal AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice of Renewal. SUMMARY: The FAA announces the charter renewal of the Aviation Rulemaking Advisory Committee (ARAC), a Federal Advisory Committee that works...

  10. 75 FR 60493 - Aviation Rulemaking Advisory Committee; Renewal

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-09-30

    ... Federal Aviation Administration Aviation Rulemaking Advisory Committee; Renewal AGENCY: Federal Aviation... Regulations, the FAA gives notice it has renewed the Aviation Rulemaking Advisory Committee (ARAC) for a 2..., Executive Director, Aviation Rulemaking Advisory Committee. BILLING CODE 4910-13-P...

  11. 78 FR 70954 - Risk Communications Advisory Committee; Notice of Meeting

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-11-27

    ... HUMAN SERVICES Food and Drug Administration Risk Communications Advisory Committee; Notice of Meeting... the public. Name of Committee: Risk Communications Advisory Committee. General Function of the... the free Webcast. Visit the Risk Communication Advisory Committee Web site at...

  12. 76 FR 78908 - Biological and Environmental Research Advisory Committee

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-12-20

    ... Biological and Environmental Research Advisory Committee AGENCY: Office of Science, Department of Energy. ACTION: Notice of renewal of the Biological and Environmental Research Advisory Committee. SUMMARY... Biological and Environmental Research Advisory Committee will be renewed for a two- year period...

  13. 76 FR 31319 - Biological and Environmental Research Advisory Committee

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-05-31

    ... Biological and Environmental Research Advisory Committee AGENCY: Office of Science, Department of Energy... the Biological and Environmental Research Advisory Committee (BERAC). The Federal Advisory Committee..., Office of Biological and Environmental Research, SC-23/Germantown Building, 1000 Independence Avenue,...

  14. 78 FR 53497 - Commercial Space Transportation Advisory Committee; Closed Session

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-08-29

    ... Federal Aviation Administration Commercial Space Transportation Advisory Committee; Closed Session AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice of Commercial Space Transportation Advisory... closed session of the Commercial Space Transportation Advisory Committee (COMSTAC). The special...

  15. 77 FR 53168 - Olympic Peninsula Resource Advisory Committee

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-08-31

    ... Forest Service Olympic Peninsula Resource Advisory Committee AGENCY: Forest Service, USDA. ACTION: Notice of meeting. SUMMARY: The Olympic Peninsula Resource Advisory Committee will meet in Olympia, WA. The...: The following business will be conducted: The Olympic Peninsula Resource Advisory Committee...

  16. Aerospace Safety Advisory Panel

    NASA Technical Reports Server (NTRS)

    2001-01-01

    This annual report is based on the activities of the Aerospace Safety Advisory Panel in calendar year 2000. During this year, the construction of the International Space Station (ISS) moved into high gear. The launch of the Russian Service Module was followed by three Space Shuttle construction and logistics flights and the deployment of the Expedition One crew. Continuous habitation of the ISS has begun. To date, both the ISS and Space Shuttle programs have met or exceeded most of their flight objectives. In spite of the intensity of these efforts, it is clear that safety was always placed ahead of cost and schedule. This safety consciousness permitted the Panel to devote more of its efforts to examining the long-term picture. With ISS construction accelerating, demands on the Space Shuttle will increase. While Russian Soyuz and Progress spacecraft will make some flights, the Space Shuttle remains the primary vehicle to sustain the ISS and all other U.S. activities that require humans in space. Development of a next generation, human-rated vehicle has slowed due to a variety of technological problems and the absence of an approach that can accomplish the task significantly better than the Space Shuttle. Moreover, even if a viable design were currently available, the realities of funding and development cycles suggest that it would take many years to bring it to fruition. Thus, it is inescapable that for the foreseeable future the Space Shuttle will be the only human-rated vehicle available to the U.S. space program for support of the ISS and other missions requiring humans. Use of the Space Shuttle will extend well beyond current planning, and is likely to continue for the life of the ISS.

  17. Aerospace Safety Advisory Panel

    NASA Technical Reports Server (NTRS)

    1999-01-01

    This report covers the activities of the Aerospace Safety Advisory Panel (ASAP) for calendar year 1998-a year of sharp contrasts and significant successes at NASA. The year opened with the announcement of large workforce cutbacks. The slip in the schedule for launching the International Space Station (ISS) created a 5-month hiatus in Space Shuttle launches. This slack period ended with the successful and highly publicized launch of the STS-95 mission. As the year closed, ISS assembly began with the successful orbiting and joining of the Functional Cargo Block (FGB), Zarya, from Russia and the Unity Node from the United States. Throughout the year, the Panel maintained its scrutiny of NASAs safety processes. Of particular interest were the potential effects on safety of workforce reductions and the continued transition of functions to the Space Flight Operations Contractor. Attention was also given to the risk management plans of the Aero-Space Technology programs, including the X-33, X-34, and X-38. Overall, the Panel concluded that safety is well served for the present. The picture is not as clear for the future. Cutbacks have limited the depth of talent available. In many cases, technical specialties are "one deep." The extended hiring freeze has resulted in an older workforce that will inevitably suffer significant departures from retirements in the near future. The resulting "brain drain" could represent a future safety risk unless appropriate succession planning is started expeditiously. This and other topics are covered in the section addressing workforce. In the case of the Space Shuttle, beneficial and mandatory safety and operational upgrades are being delayed because of a lack of sufficient present funding. Likewise, the ISS has little flexibility to begin long lead-time items for upgrades or contingency planning.

  18. Mars Exploration Rovers navigation results

    NASA Technical Reports Server (NTRS)

    D'Amario, Louis A.

    2004-01-01

    The twin Mars Exploration Rovers, Spirit and Opportunity, were launched on June 10, 2003, and July 8, 2003, from Cape Canaveral, Florida. Spirit and Opportunity were targeted for landings at Gusev Crater (arrival on January 4, 2004) and Meridiani Planum (arrival on January 25, 2004). The primary navigation challenge was to deliver each spacecraft to the desired atmospheric entry interface point with sufficient accuracy such that each lander would touch down within a specified landing ellipse (about 70 km x 5 km) determined to be safe for landing and also judged to be scientifically interesting. In order to achieve landing within the target ellipse, precise control of the inertial entry flight path angle (FPA) at atmospheric entry was required. The maximum allowable errors in FPA following TCM-5 (trajectory correction maneuver #5) at Entry (E) -2 days were +/-0.12 deg(3 sigma) for Spirit and +/-0.14 deg(3 sigma) for Opportunity. Achieving these entry delivery accuracies necessitated significant improvements to the interplanetary navigation system used for MER. These improvements included new processes and software for orbit determination, propulsive maneuver design, and entry, descent, and landing (EDL) trajectory simulation. The actual achieved atmospheric entry accuracies for Spirit and Opportunity significantly exceeded the requirements. At the navigation data cutoff for the TCM-5 final design, the orbit determination FPA knowledge error was 0.028 deg(3 sigma) for Spirit and 0.035 deg(3 sigma) for Opportunity. Because of exceptionally accurate navigation performance, TCM-5 (E - 2 days) and TCM-6 (E - 4 hours) were canceled for both Spirit and Opportunity. The actual landing locations (determined from in-situ Doppler tracking between the MER rovers and the Mars Odyssey orbiter) differed from the target landing points by 10.1 km (downtrack) for Spirit and 24.6 km (downtrack) for Opportunity. The majority of the landing position offsets for both landers was

  19. Writing Reviews for Readers' Advisory

    ERIC Educational Resources Information Center

    Hooper, Brad

    2010-01-01

    Reviews are an important resource for readers' advisory and collection development. They are also a helpful promotional tool, introducing patrons to what is new on the shelf. This resource includes: (1) Tips for writing strong, relevant reviews; (2) Different ways reviews can be used to promote your library; and (3) A chapter by Joyce Saricks…

  20. Forming a Consumer Advisory Committee.

    ERIC Educational Resources Information Center

    Library of Congress, Washington, DC. National Library Service for the Blind and Physically Handicapped.

    This publication contains guidelines for the formation of consumer advisory committees to aid in the improvement of library services to blind and physically handicapped individuals. The purpose, justification, and composition of such committees are reviewed, as well as the tasks of organizing the committee's first meeting and providing…