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1

Transportation Research Circular: Future Aviation Activities  

NSDL National Science Digital Library

The 12th International Workshop on Future Aviation Activities was held in September 2002, and this collection of presentation transcripts was released the following January. Many references to the September 11 terrorist attacks are made, especially concerning airport security measures and changes in the public's views of flying. Speakers also addressed long-term trends in air transportation, such as airspace capacity and general aviation growth. Nearly every kind of aviation was discussed; ranging from domestic to international activities and airports to manufacturers, the event had implications for the industry as a whole.

2003-01-01

2

78 FR 46594 - Extension of Agency Information Collection Activity Under OMB Review: Aviation Security Customer...  

Federal Register 2010, 2011, 2012, 2013, 2014

...Review: Aviation Security Customer Satisfaction Performance Measurement Passenger...surveying travelers to measure customer satisfaction of aviation security in an...Title: Aviation Security Customer Satisfaction Performance Measurement...

2013-08-01

3

Aviation Science Activities for Elementary Grades. Revised.  

ERIC Educational Resources Information Center

This guide contains the procedures and lists of materials needed for 105 aviation activities, demonstrations, and experiments. These activities, demonstrations, and experiments (suitable for students in all elementary grades) are organized into three sections by major topic area: (1) properties of air; (2) factors related to airplane flight; and…

Federal Aviation Administration (DOT), Washington, DC.

4

75 FR 29567 - Extension of Agency Information Collection Activity Under OMB Review: Aviation Security Customer...  

Federal Register 2010, 2011, 2012, 2013, 2014

...Review: Aviation Security Customer Satisfaction Performance Measurement Passenger...surveying travelers to measure customer satisfaction of aviation security in an...1652-0013; Aviation Security Customer Satisfaction Performance Measurement...

2010-05-26

5

78 FR 4856 - Extension of Agency Information Collection Activity Under OMB Review: Aviation Security...  

Federal Register 2010, 2011, 2012, 2013, 2014

...Activity Under OMB Review: Aviation Security Infrastructure Fee Records Retention...necessary for TSA to help set the Aviation Security Infrastructure Fee (ASIF...Collection Requirement Title: Aviation Security Infrastructure Fee Records...

2013-01-23

6

75 FR 47311 - Extension of Agency Information Collection Activity Under OMB Review: Aviation Security...  

Federal Register 2010, 2011, 2012, 2013, 2014

...Activity Under OMB Review: Aviation Security Infrastructure Fee Records Retention...necessary for TSA to help set the Aviation Security Infrastructure Fee (ASIF...Collection Requirement Title: Aviation Security Infrastructure Fee Records...

2010-08-05

7

A National Opinion Survey of Aviation Maintenance Training Regulations. Technical Report.  

ERIC Educational Resources Information Center

A national survey examined the opinions of aircraft maintenance training school administrators and instructors concerning the suitability of Federal Aviation Regulation Part 147 (FAR 147) to regulate effectively today's training programs. Responding to the mail survey instrument were 163 persons representing 90 schools in 37 states. Included among…

Johnson, William B.; Ziegler, Charles F., Jr.

8

The National Aviation Operational Monitoring Service (NAOMS): A Documentation of the Development of a Survey Methodology  

NASA Technical Reports Server (NTRS)

The National Aviation Operational Monitoring Service (NAOMS) was a research project under NASA s Aviation Safety Program during the years from 2000 to 2005. The purpose of this project was to develop a methodology for gaining reliable information on changes over time in the rates-of-occurrence of safety-related events as a means of assessing the safety of the national airspace. The approach was a scientifically designed survey of the operators of the aviation system concerning their safety-related experiences. This report presents the results of the methodology developed and a demonstration of the NAOMS concept through a survey of nearly 20,000 randomly selected air-carrier pilots. Results give evidence that the NAOMS methodology can provide a statistically sound basis for evaluating trends of incidents that could compromise safety. The approach and results are summarized in the report and supporting documentation and complete analyses of results are presented in 14 appendices.

Connors, Mary M.; Mauro, Robert; Statler, Irving C.

2012-01-01

9

Aviator's night vision system (ANVIS) in Operation Enduring Freedom (OEF): user acceptability survey  

NASA Astrophysics Data System (ADS)

In 1973, the U.S. Army adopted night vision devices for use in the aviation environment. These devices are based on the principle of image intensification (I2) and have become the mainstay for the aviator's capability to operate during periods of low illumination, i.e., at night. In the nearly four decades that have followed, a number of engineering advancements have significantly improved the performance of these devices. The current version, using 3rd generation I2 technology is known as the Aviator's Night Vision Imaging System (ANVIS). While considerable experience with performance has been gained during training and peacetime operations, no previous studies have looked at user acceptability and performance issues in a combat environment. This study was designed to compare Army Aircrew experiences in a combat environment to currently available information in the published literature (all peacetime laboratory and field training studies) and to determine if the latter is valid. The purpose of this study was to identify and assess aircrew satisfaction with the ANVIS and any visual performance issues or problems relating to its use in Operation Enduring Freedom (OEF). The study consisted of an anonymous survey (based on previous validated surveys used in the laboratory and training environments) of 86 Aircrew members (64% Rated and 36% Non-rated) of an Aviation Task Force approximately 6 months into their OEF deployment. This group represents an aggregate of >94,000 flight hours of which ~22,000 are ANVIS and ~16,000 during this deployment. Overall user acceptability of ANVIS in a combat environment will be discussed.

Hiatt, Keith L.; Trollman, Christopher J.; Rash, Clarence E.

2010-04-01

10

76 FR 66346 - Agency Information Collection Activities; Requests for Comments: Clearance of Renewed Approval of...  

Federal Register 2010, 2011, 2012, 2013, 2014

...Information Collection; General Aviation and Air Taxi Activity and Avionics Survey AGENCY: Federal Aviation Administration (FAA), DOT...2120-0060. Title: General Aviation and Air Taxi Activity and Avionics Survey. Form Numbers: There are no FAA forms associated...

2011-10-26

11

78 FR 75671 - Agency Information Collection Activities: Requests for Comments; Clearance of Renewed Approval of...  

Federal Register 2010, 2011, 2012, 2013, 2014

...Information Collection: General Aviation and Air Taxi Activity and Avionics Survey AGENCY: Federal Aviation Administration (FAA), DOT...2120-0060. Title: General Aviation and Air Taxi Activity and Avionics Survey. Form Numbers: There are no FAA forms associated...

2013-12-12

12

76 FR 81009 - Agency Information Collection Activities: Requests for Comments; Clearance of Renewed Approval of...  

Federal Register 2010, 2011, 2012, 2013, 2014

...Information Collection: General Aviation and Air Taxi Activity and Avionics Survey AGENCY: Federal Aviation Administration (FAA), DOT...2120-0060. Title: General Aviation and Air Taxi Activity and Avionics Survey. Form Numbers: There are no FAA forms associated...

2011-12-27

13

PRINCIPLE OF ACTIVE SYSTEM SAFETY FOR AVIATION: CHALLENGES, SUPPORTIVE THEORY, IMPLEMENTATION, APPLICATION AND FUTURE  

Microsoft Academic Search

Active system safety approach for aviation is pre- sented. An implementation scheme using a typical air- crafts structure is discussed with requirements, models and algorithms, hardware and software features. A re- liability gain of the active system safety approach is analyzed. It is shown how active system safety model of an aircraft is organized and features of the main de-

V. Bukov; V. Chernyshov; B. Kirk; I. Schagaev

14

Let's Explore Aviation  

ERIC Educational Resources Information Center

Presents an intermediate level social studies unit dealing with air education, social aspects of aviation, and the importance of aviation to industry and transportation. Includes objectives, twelve activities, and evaluative procedures. (SL)

Arvin, Jean

1977-01-01

15

Guidelines for Federal Aviation Administration Regional Aviation Education Coordinators and Aviation Education Facilitators.  

ERIC Educational Resources Information Center

This publication is designed to provide both policy guidance and examples of how to work with various constituencies in planning and carrying out appropriate Federal Aviation Administration (FAA) aviation education activities. Information is provided on the history of aerospace/aviation education, FAA educational materials, aerospace/aviation

Strickler, Mervin K., Jr.

16

Applying the Principle of Active Safety to Aviation  

Microsoft Academic Search

The paper describes the Principle of Active System Safety applied to the reduction of operational risks by analysing data during in real time of flight to prevent accidents. Key elements of the aircraft, flight and piloting behaviour are modelled and considered as a set of interconnected elements with dependencies in terms of their impact on each other from the safety

B. Kirk; V. Bukov; Weavers House

17

Collegiate Aviation and the Community College: A Survey of Post-September 11 Issues  

ERIC Educational Resources Information Center

Undoubtedly, the aviation industry has experienced turbulent times recently and may face significant restructuring in the next few years. Especially noteworthy has been the impact on collegiate flight programs, particularly those 2-year programs offered by community colleges that often bridge the gap in financial aid and flexible class schedules…

Bliss, Timm J.; Kutz, Mary N.

2008-01-01

18

Measuring water activity of aviation fuel using a polymer optical fiber Bragg grating  

NASA Astrophysics Data System (ADS)

Poly(methyl methacrylate) (PMMA) based polymer optical fiber Bragg gratings have been used for measuring water activity of aviation fuel. Jet A-1 samples with water content ranging from 100% ERH (wet fuel) to 10 ppm (dried fuel), have been conditioned and calibrated for measurement. The PMMA based optical fiber grating exhibits consistent response and a good sensitivity of 59±3pm/ppm (water content in mass). This water activity measurement allows PMMA based optical fiber gratings to detect very tiny amounts of water in fuels that have a low water saturation point, potentially giving early warning of unsafe operation of a fuel system.

Zhang, Wei; Webb, David J.; Carpenter, Mark; Williams, Colleen

2014-05-01

19

Systems analysis of the installation, mounting, and activation of emergency locator transmitters in general aviation aircraft  

NASA Technical Reports Server (NTRS)

A development program was developed to design and improve the Emergency Locator Transmitter (ELT) transmitter and to improve the installation in the aircraft and its activation subsystem. There were 1135 general aviation fixed wing aircraft accident files reviewed. A detailed description of the damage to the aircraft was produced. The search aspects of these accidents were studied. As much information as possible about the ELT units in these cases was collected. The data should assist in establishing installation and mounting criteria, better design standards for activation subsystems, and requirements for the new ELT system design in the area of crashworthiness.

Hall, D. S.

1980-01-01

20

Survey of Civic Engagement Activities  

E-print Network

Survey of Civic Engagement Activities in Higher Education in Ireland #12;Report co by CASTLE PRINT MAy 2011 #12;Survey of Civic Engagement Activities in Higher Education in Ireland #12;4 Campus EngagE Survey of Civic Engagement Activities in Higher Education in Ireland Acknowledgements

O'Mahony, Donal E.

21

Aviation turbine fuels, 1985  

SciTech Connect

Samples of this report are typical 1985 production and were analyzed in the laboratories of 17 manufactures of aviation turbine (jet) fuels. The data were submitted for study, calculation, and compilation under a cooperative agreement between the National Institute for Petroleum and Energy Research (NIPER), Bartlesville, Oklahoma, the American Petroleum Institute (API), and the United States Department of Energy (DOE), Bartlesville Project Office. results for certain properties of 88 samples of aviation turbine fuels are included in the report for military grades JP-4 and JP-5, and commercial type Jet A. Previous aviation fuel survey reports are listed.

Dickson, C.L.; Woodward, P.W.

1986-05-01

22

Biofuels as an Alternative Energy Source for Aviation-A Survey  

NASA Technical Reports Server (NTRS)

The use of biofuels has been gaining in popularity over the past few years because of their ability to reduce the dependence on fossil fuels. As a renewable energy source, biofuels can be a viable option for sustaining long-term energy needs if they are managed efficiently. We investigate past, present, and possible future biofuel alternatives currently being researched and applied around the world. More specifically, we investigate the use of ethanol, cellulosic ethanol, biodiesel (palm oil, algae, and halophytes), and synthetic fuel blends that can potentially be used as fuels for aviation and nonaerospace applications. We also investigate the processing of biomass via gasification, hydrolysis, and anaerobic digestion as a way to extract fuel oil from alternative biofuels sources.

McDowellBomani, Bilal M.; Bulzan, Dan L.; Centeno-Gomez, Diana I.; Hendricks, Robert C.

2009-01-01

23

Error, stress, and teamwork in medicine and aviation: cross sectional surveys  

Microsoft Academic Search

Objectives: To survey operating theatre and intensive care unit staff about attitudes concerning error, stress, and teamwork and to compare these attitudes with those of airline cockpit crew. Design: Cross sectional surveys. Setting: Urban teaching and non›teaching hospitals in the United States, Israel, Germany, Switzerland, and Italy. Major airlines around the world. Participants: 1033 doctors, nurses, fellows, and residents working

J Bryan Sexton; Eric J Thomas; Robert L Helmreich

2000-01-01

24

Nanoparticle molybdenum dioxide: A highly active catalyst for partial oxidation of aviation fuels  

Microsoft Academic Search

The More Electric Airplane (MEA) concept may be the most innovative development in aviation since the Wright “Flyer” and certainly represents the most transformative change in commercial aviation since the first use of jet engines in 1952. One of the key requirements for enabling the MEA is fuel-flexible solid oxide fuel cell systems that operate directly on logistics fuels such

Oscar Marin-Flores; Timothy Turba; Caleb Ellefson; Kang Wang; Joe Breit; Jeongmin Ahn; M. Grant Norton; Su Ha

2010-01-01

25

Agricultural aviation research  

NASA Technical Reports Server (NTRS)

A compilation of papers, comments, and results is provided during a workshop session. The purpose of the workshop was to review and evaluate the current state of the art of agricultural aviation, to identify and rank potentially productive short and long range research and development areas, and to strengthen communications between research scientists and engineers involved in agricultural research. Approximately 71 individuals actively engaged in agricultural aviation research were invited to participate in the workshop. These were persons familiar with problems related to agricultural aviation and processing expertise which are of value for identifying and proposing beneficial research.

Chevalier, H. L. (compiler); Bouse, L. F. (compiler)

1977-01-01

26

Small V/STOL aircraft analysis. Volume 2: Appendices. [to determine current and future general aviation missions and performance requirements  

NASA Technical Reports Server (NTRS)

A survey of general aviation activities in the United States was principally conducted through interviews with users, manufacturers, trade associations, and government organizations. A list of the organizations interviews is presented. The data became the basis for defining the current and future general aviation missions and performance. The economic characteristics of general aviation are examined. The desires of each organization regarding future aircraft characteristics are summarized.

Smith, K. R., Jr.; Belina, F. W.

1973-01-01

27

Physical education activity program survey  

E-print Network

This survey assessed the perceptions of students in the spring semester, 1984, about characteristics of and courses in the University of North Carolina's Physical Education Activities Program and obtained their suggestions for changes in the program...

Lumpkin, Angela; Avery, Marybell

1986-01-01

28

Active Volcanoes of the Kurile Islands: A Reference Guide for Aviation Users  

USGS Publications Warehouse

Introduction: The many volcanoes of the remote and mostly uninhabited Kurile Island arc (fig. 1; table 1) pose a serious hazard for air traffic in the North Pacific. Ash clouds from Kurile eruptions can impact some of the busiest air travel routes in the world and drift quickly into airspace managed by three countries: Russia, Japan, and the United States. Prevailing westerly winds throughout the region will most commonly send ash from any Kurile eruption directly across the parallel North Pacific airways between North America and Asia (Kristine A. Nelson, National Weather Service, oral commun., 2006; fig. 1). This report presents maps showing locations of the 36 most active Kurile volcanoes plotted on Operational Navigational Charts published by the Defense Mapping Agency (map sheets ONC F-10, F-11, and E-10; figs. 1, 2, 3, 4). These maps are intended to assist aviation and other users in the identification of restless Kurile volcanoes. A regional map is followed by three subsections of the Kurile volcanic arc (North, Central, South). Volcanoes and selected primary geographic features are labeled. All maps contain schematic versions of the principal air routes and selected air navigational fixes in this region.

Neal, Christina A.; Rybin, Alexander; Chibisova, Marina; Miller, Edward

2008-01-01

29

Error, stress, and teamwork in medicine and aviation: cross sectional surveys  

NASA Technical Reports Server (NTRS)

OBJECTIVES: To survey operating theatre and intensive care unit staff about attitudes concerning error, stress, and teamwork and to compare these attitudes with those of airline cockpit crew. DESIGN:: Cross sectional surveys. SETTING:: Urban teaching and non-teaching hospitals in the United States, Israel, Germany, Switzerland, and Italy. Major airlines around the world. PARTICIPANTS:: 1033 doctors, nurses, fellows, and residents working in operating theatres and intensive care units and over 30 000 cockpit crew members (captains, first officers, and second officers). MAIN OUTCOME MEASURES:: Perceptions of error, stress, and teamwork. RESULTS:: Pilots were least likely to deny the effects of fatigue on performance (26% v 70% of consultant surgeons and 47% of consultant anaesthetists). Most pilots (97%) and intensive care staff (94%) rejected steep hierarchies (in which senior team members are not open to input from junior members), but only 55% of consultant surgeons rejected such hierarchies. High levels of teamwork with consultant surgeons were reported by 73% of surgical residents, 64% of consultant surgeons, 39% of anaesthesia consultants, 28% of surgical nurses, 25% of anaesthetic nurses, and 10% of anaesthetic residents. Only a third of staff reported that errors are handled appropriately at their hospital. A third of intensive care staff did not acknowledge that they make errors. Over half of intensive care staff reported that they find it difficult to discuss mistakes. CONCLUSIONS: Medical staff reported that error is important but difficult to discuss and not handled well in their hospital. Barriers to discussing error are more important since medical staff seem to deny the effect of stress and fatigue on performance. Further problems include differing perceptions of teamwork among team members and reluctance of senior theatre staff to accept input from junior members.

Sexton, J. B.; Thomas, E. J.; Helmreich, R. L.

2000-01-01

30

An Active Flow Circulation Controlled Flap Concept for General Aviation Aircraft Applications  

NASA Technical Reports Server (NTRS)

A recent focus on revolutionary aerodynamic concepts has highlighted the technology needs of general aviation and personal aircraft. New and stringent restrictions on these types of aircraft have placed high demands on aerodynamic performance, noise, and environmental issues. Improved high lift performance of these aircraft can lead to slower takeoff and landing speeds that can be related to reduced noise and crash survivability issues. Circulation Control technologies have been around for 65 years, yet have been avoided due to trade offs of mass flow, pitching moment, perceived noise etc. The need to improve the circulation control technology for general aviation and personal air-vehicle applications is the focus of this paper. This report will describe the development of a 2-D General Aviation Circulation Control (GACC) wing concept that utilizes a pulsed pneumatic flap.

Jones, Gregory S.; Viken, Sally A.; Washburn, Anthony E.; Jenkins, Luther N.; Cagle, C. Mark

2002-01-01

31

The relationship between aviation activities and ultrafine particulate matter concentrations near a mid-sized airport  

NASA Astrophysics Data System (ADS)

Aircraft contribute to emissions of ultrafine particulate matter (UFP) and other air pollutants, with corresponding impacts on community-level exposures near active airports. However, it is challenging to isolate the contribution of aircraft from local road traffic and other nearby combustion sources. In this study, we used high-resolution monitoring and flight activity data to quantify contributions from landing and take-off operations (LTO) to UFP concentrations. UFP concentrations were monitored with 1-min resolution at four monitoring sites surrounding T.F. Green Airport in Warwick, RI, in three one-week campaigns across different seasons in 2007 and 2008. Along with pollutant monitoring, wind data were collected and runway-specific LTO data were obtained from airport officials. We developed regression models in which wind speed and direction were included as a nonparametric smooth spatial term using thin-plate splines applied to wind velocity vectors and fitted using linear mixed models. To better pinpoint the timing in the LTO cycle most contributing to elevated concentrations, we used regression models with lag terms for flight activity (ranging from 5 min before to 5 min after the departure or arrival). Results suggest positive associations between UFP concentrations and LTO activities, especially for departures when an aircraft moves near or passes a monitoring site. Departures of jet engine aircrafts on a runway proximate to one of the monitors have a maximal impact 1 min prior to take-off, with median absolute contributions during those minutes of 7400 particles cm-3 (range: 1100-70,000 particles cm-3). Across all observations, our models indicate median (95th, 99th percentile) percent contribution for all LTO activities of 9.8% (54%, 72%) and 6.6% (39%, 55%) for the two sites proximate to the airport's principal runway, and 4.7% (24%, 36%) and 1.8% (22%, 31%) for the remaining two sites. Our analysis illustrates the complexity of aviation impacts on local air quality and allows for quantification of the marginal contribution of LTO activity relative to other nearby sources.

Hsu, Hsiao-Hsien; Adamkiewicz, Gary; Andres Houseman, E.; Vallarino, Jose; Melly, Steven J.; Wayson, Roger L.; Spengler, John D.; Levy, Jonathan I.

2012-04-01

32

Aviation application over IPv6: performance issues  

Microsoft Academic Search

Aviation industries in United States and in Europe are undergoing a major paradigm shift in the introduction of new network technologies. In the US, NASA is also actively investigating the feasibility of IPv6 based networks for the aviation needs of the United States. In Europe, the Eurocontrol lead, Internet protocol for aviation exchange (iPAX) Working Group is actively investigating the

Vikash Srivastava; Chris Wargo; S. Lai

2004-01-01

33

Aviation & Emissions Federal Aviation Administration  

E-print Network

or greenhouse gases, respectively. Water in the aircraft exhaust at altitude may have a greenhouse effect produces contrails, which also may have a greenhouse effect. About 10 percent of aircraft emissions of all.S. However, aviation also has environmental impacts ­ primarily noise and atmospheric emissions. While

34

Global thunderstorm activity research survey  

NASA Technical Reports Server (NTRS)

The published literature on the subject of the monitoring of global thunderstorm activity by instrumented satellites was reviewed. A survey of the properties of selected physical parameters of the thunderstorm is presented. The concepts used by satellites to identify and to measure terrestrial lightning pulses are described. The experimental data acquired by satellites are discussed. The scientific achievements of the satellites are evaluated against the needs of scientists and the potential requirements of user agencies. The performances of the satellites are rated according to their scientific and operational achievements.

Coroniti, S. C.

1982-01-01

35

Aviation safety analysis  

E-print Network

Introduction: Just as the aviation system is complex and interrelated, so is aviation safety. Aviation safety involves design of aircraft and airports, training of ground personnel and flight crew members' maintenance of ...

Ausrotas, Raymond A.

1984-01-01

36

Aviation Dentistry  

PubMed Central

With the rapid expansion of the airline industry in all sectors, dentists should pay special attention to crews and frequent flyers, due to change of pressure in-flight, that cause different types of oro-facial pain. Aviation dentistry deals with evaluation, principles of prevention, treatment of diseases, disorders or conditions which are related to oral cavity and maxillofacial area or adjacent and associated structures and their impact on people who travel or on aircrew members and flight restrictions. Dentists should prevent the creation of in-flight hazards when they treat aircrew members and frequent flyers. PMID:24783162

Lakshmi; Sakthi, D Sri

2014-01-01

37

Aviation Lubricants  

NASA Astrophysics Data System (ADS)

Aviation lubricants must be extremely reliable, withstand high specific loadings and extreme environmental conditions within short times. Requirements are critical. Piston engines increasingly use multi-grade oils, single grades are still used extensively, with anti-wear and anti-corrosion additives for some classes of engines. The main gas turbine lubricant problem is transient heat exposure, the main base oils used are synthetic polyol esters which minimise thermal degradation. Aminic anti-oxidants are used together with anti-wear/load-carrying, corrosion inhibitor and anti-foam additives. The majority of formulation viscosities are 5 cSt at 100°C. Other considerations are seal compatibility and coking tendency.

Lansdown, A. R.; Lee, S.

38

Aviation dentistry.  

PubMed

With the rapid expansion of the airline industry in all sectors, dentists should pay special attention to crews and frequent flyers, due to change of pressure in-flight, that cause different types of oro-facial pain. Aviation dentistry deals with evaluation, principles of prevention, treatment of diseases, disorders or conditions which are related to oral cavity and maxillofacial area or adjacent and associated structures and their impact on people who travel or on aircrew members and flight restrictions. Dentists should prevent the creation of in-flight hazards when they treat aircrew members and frequent flyers. PMID:24783162

Lakshmi; Sakthi, D Sri

2014-03-01

39

78 FR 32416 - Intent To Request Renewal From OMB of One Current Public Collection of Information: Aviation...  

Federal Register 2010, 2011, 2012, 2013, 2014

...Information: Aviation Security Customer Satisfaction Performance Measurement Passenger...surveying travelers to measure customer satisfaction of aviation security in an...1652-0013; Aviation Security Customer Satisfaction Performance Measurement...

2013-05-30

40

75 FR 11552 - Intent To Request Renewal From OMB of One Current Public Collection of Information: Aviation...  

Federal Register 2010, 2011, 2012, 2013, 2014

...Information: Aviation Security Customer Satisfaction Performance Measurement Passenger...surveying travelers to measure customer satisfaction of aviation security in an...1652-0013; Aviation Security Customer Satisfaction Performance Measurement...

2010-03-11

41

Feasibility Study for Aviation Programs at Hudson Valley Community College.  

ERIC Educational Resources Information Center

This is a report on a survey to determine the feasibility of establishing aviation training programs at a New York community college. It examines existing sources, and present and future needs for commercial pilots, aviation mechanics, and airline stewardesses. Among the conclusions are the discovery that the aviation industry is on the threshold…

Buckley, Edward P.

42

Volcanic hazards and aviation safety  

USGS Publications Warehouse

An aeronautical chart was developed to determine the relative proximity of volcanoes or ash clouds to the airports and flight corridors that may be affected by volcanic debris. The map aims to inform and increase awareness about the close spatial relationship between volcanoes and aviation operations. It shows the locations of the active volcanoes together with selected aeronautical navigation aids and great-circle routes. The map mitigates the threat that volcanic hazards pose to aircraft and improves aviation safety.

Casadevall, Thomas J.; Thompson, Theodore B.; Ewert, John W.

1996-01-01

43

Aviation fuels, 1983  

Microsoft Academic Search

Properties of some aviation gasolines and aviation turbine fuels marketed in the United States during 1983 are presented in this report. The samples represented are typical 1983 production and were analyzed in the laboratories of 12 manufacturers of aviation gasolines and 18 producers of aviation turbine (jet) fuels. The data were submitted for study, calculation, and compilation under a cooperative

E. M. Shelton; C. L. Dickson

1984-01-01

44

General Aviation Propulsion  

NASA Technical Reports Server (NTRS)

Programs exploring and demonstrating new technologies in general aviation propulsion are considered. These programs are the quiet, clean, general aviation turbofan (QCGAT) program; the general aviation turbine engine (GATE) study program; the general aviation propeller technology program; and the advanced rotary, diesel, and reciprocating engine programs.

1980-01-01

45

Aviation Safety Issues Database  

NASA Technical Reports Server (NTRS)

The aviation safety issues database was instrumental in the refinement and substantiation of the National Aviation Safety Strategic Plan (NASSP). The issues database is a comprehensive set of issues from an extremely broad base of aviation functions, personnel, and vehicle categories, both nationally and internationally. Several aviation safety stakeholders such as the Commercial Aviation Safety Team (CAST) have already used the database. This broader interest was the genesis to making the database publically accessible and writing this report.

Morello, Samuel A.; Ricks, Wendell R.

2009-01-01

46

General aviation and community development  

NASA Technical Reports Server (NTRS)

The summer program is summarized. The reports presented concern (1) general aviation components, (2) general aviation environment, (3) community perspective, and (4) transportation and general aviation in Virginia.

Sincoff, M. Z. (editor); Dajani, J. S. (editor)

1975-01-01

47

Estimating the environmental benefits of aviation fuel and emissions reductions  

E-print Network

With commercial aviation continuing to grow and environmental policymaking activity intensifying, it is becoming increasingly necessary to assess the environmental impact of measures that result in changes in aviation fuel ...

Dorbian, Christopher S. (Christopher Salvatore)

2010-01-01

48

The U.S. aviation system to the year 2000  

E-print Network

Introduction: 1.1 The Future of the Aviation System. It is nothing if not presumptuous to look ahead twenty years in any phase of human activity. This seems particularly true in civil aviation where the certificated airlines ...

Ausrotas, Raymond A.

1982-01-01

49

Aviation News  

NSDL National Science Digital Library

Whether you're a fan of Airbus or Boeing, Quantas or Aer Lingus, this website provides very thorough coverage of the airline industry. The Flight Global group's motto is "serious about aviation", and it shows on their homepage, where visitors can find over thirteen sections dedicated to air transport, helicopters, training, and spaceflight. The more casual user may just wish to click on a few of the "Latest News Headlines", but dedicated aeronautics devotees may wish to sign up for their e-newsletter and their RSS feed. Moving down the site's homepage, visitors can cruise on in to the "What's Hot" area and the "Jobs" section, which might be useful for future members of a flight crew or those looking to make a more dramatic career change. Of course, any visit to this site would be woefully incomplete if visitors didn't take a look at profiles of the Airbus 380, the Boeing 747, and many other planes in the "Dynamic Aircraft Profiles" area of the site.

50

Monitoring volcanic activity with satellite remote sensing to reduce aviation hazard and mitigate the risk: application to the North Pacific  

NASA Astrophysics Data System (ADS)

Volcanic activity across the North Pacific (NOPAC) occurs on a daily basis and as such monitoring needs to occur on a 24 hour, 365 days a year basis. The risk to the local population and aviation traffic is too high for this not to happen. Given the size and remoteness of the NOPAC region, satellite remote sensing has become an invaluable tool to monitor the ground activity from the regions volcanoes as well as observe, detect and analyze the volcanic ash clouds that transverse across the Pacific. Here, we describe the satellite data collection, data analysis, real-time alert/alarm systems, observational database and nearly 20-year archive of both automated and manual observations of volcanic activity. We provide examples of where satellite remote sensing has detected precursory activity at volcanoes, prior to the volcanic eruption, as well as different types of eruptive behavior that can be inferred from the time series data. Additionally, we illustrate how the remote sensing data be used to detect volcanic ash in the atmosphere, with some of the pro's and con's to the method as applied to the NOPAC, and how the data can be used with other volcano monitoring techniques, such as seismic monitoring and infrasound, to provide a more complete understanding of a volcanoes behavior. We focus on several large volcanic events across the region, since our archive started in 1993, and show how the system can detect both these large scale events as well as the smaller in size but higher in frequency type events. It's all about how to reduce the risk, improve scenario planning and situational awareness and at the same time providing the best and most reliable hazard assessment from any volcanic activity.

Webley, P. W.; Dehn, J.

2012-12-01

51

[Advancement and goals of the aviation human engineering].  

PubMed

Analyzed were the efforts of the State Scientific-Research Test Institute of Aviation and Space Medicine to weigh and account the human factor in designing and upgrading avionics and aviation machinery. Described are the policy of human engineering support to the development, evaluation, and operation of aviation machinery, and the benefits from the human factor knowledge to the specifications for aviation machinery and allowance for the psychophysiological aptitudes of human on different phases of development of ergatic aviation systems. Outlined is the mainstream of ergonomic enhancement of the quality and safety, and humanization of the activities of different aviation specialists. PMID:9156675

Stupakov, G P; Ushakov, I B; Turzin, P S

1997-01-01

52

Interagency Aviation Training System  

NSDL National Science Digital Library

Developed under the direction of the Aviation Management Council, the Interagency Aviation Training System is designed to increase awareness of �agency policy, procedures, and safe practices� in aviation among agencies of the federal government. While designed for federal agency employees, this site has a wealth of free resources available that provide valuable information about the study and practice of aviation and its management for students, instructors, and enthusiasts. Of particular educational interest are the online education modules, which allow self-paced study of topics ranging from Aviation Safety to Crash Survival to an Overview of Aviation Safety & Accident Prevention Programs.

53

A volcanic activity alert-level system for aviation: review of its development and application in Alaska  

USGS Publications Warehouse

An alert-level system for communicating volcano hazard information to the aviation industry was devised by the Alaska Volcano Observatory (AVO) during the 1989–1990 eruption of Redoubt Volcano. The system uses a simple, color-coded ranking that focuses on volcanic ash emissions: Green—normal background; Yellow—signs of unrest; Orange—precursory unrest or minor ash eruption; Red—major ash eruption imminent or underway. The color code has been successfully applied on a regional scale in Alaska for a sustained period. During 2002–2011, elevated color codes were assigned by AVO to 13 volcanoes, eight of which erupted; for that decade, one or more Alaskan volcanoes were at Yellow on 67 % of days and at Orange or Red on 12 % of days. As evidence of its utility, the color code system is integrated into procedures of agencies responsible for air-traffic management and aviation meteorology in Alaska. Furthermore, it is endorsed as a key part of globally coordinated protocols established by the International Civil Aviation Organization to provide warnings of ash hazards to aviation worldwide. The color code and accompanying structured message (called a Volcano Observatory Notice for Aviation) comprise an effective early-warning message system according to the United Nations International Strategy for Disaster Reduction. The aviation color code system currently is used in the United States, Russia, New Zealand, Iceland, and partially in the Philippines, Papua New Guinea, and Indonesia. Although there are some barriers to implementation, with continued education and outreach to Volcano Observatories worldwide, greater use of the aviation color code system is achievable.

2013-01-01

54

Women and Minorities in Alaskan Aviation. Alaskan Equity Publication.  

ERIC Educational Resources Information Center

This resource guide tells the story of Alaskan women and minority aviators and those in aviation-related businesses, from the early 20th century to the present. Developed for secondary students but also suitable for younger students, the guide combines six accounts of Alaskan women and minority aviators with classroom activities centered around…

Dordan, Mary Lou; Nicholson, Deborah

55

Commercial aviation icing research requirements  

NASA Technical Reports Server (NTRS)

A short range and long range icing research program was proposed. A survey was made to various industry and goverment agencies to obtain their views of needs for commercial aviation ice protection. Through these responsed, other additional data, and Douglas Aircraft icing expertise; an assessment of the state-of-the-art of aircraft icing data and ice protection systems was made. The information was then used to formulate the icing research programs.

Koegeboehn, L. P.

1981-01-01

56

Workshop Addresses Aviation Community  

NASA Astrophysics Data System (ADS)

Delta Airlines had an unprecedented experience in 2011: For the first time, a flight was rerouted because of space weather activity. Flight 189 from Detroit, Mich., to Beijing, China, had to reroute due to solar activity that occurred 24-28 September 2011. Over the last decade most airlines that fly routes across the North Pole region have had diversions as a result of solar activity. As cross-polar air traffic increases, standing at 10,993 one-way crossings in 2011, the aviation industry is becoming more aware of the impacts that space weather can have on operations, communications, and navigation, as well as the issue of increased radiation exposure for passengers and flight crew on board.

Meehan, Jennifer; Kunches, Joseph

2012-08-01

57

Modelling Environmental & Economic Impacts of Aviation: Introducing the Aviation Integrated Modelling Project  

Microsoft Academic Search

The Aviation Integrated Modelling project is developing a policy assessment capability to enable comprehensive analyses of aviation, environment and economic interactions at local and global levels. It contains a set of inter-linked modules of the key elements relevant to this goal. These include models for aircraft\\/engine technologies, air transport demand, airport activity and airspace operations, all coupled to global climate,

Tom G. Reynolds; Steven Barrett; Lynnette M. Dray; Antony D. Evans; Marcus O. Köhler; María Vera Morales; Andreas Schäfer; Zia Wadud; Rex Britter; Henry Hallam; Richard Hunsley

2007-01-01

58

Federal Aviation Administration (FAA) Aviation Safety Information: Aviation Safety Data  

NSDL National Science Digital Library

The US Federal Aviation Administration (FAA) has recently made available three searchable aviation databases: NTSB (National Transportation Safety Board) Accident/Incident Database, FAA Incident Data System, and NTSB Recommendations to the FAA. The databases are updated monthly and are available back to 1983, 1978, and 1963 respectively. The first two can be searched via a form that allows a combination of user entries and choices from drop-down menus. Interested users are strongly encouraged to read the "Learn About the Databases" section, as well as the information about each variable before using the databases. The site also contains a brief aviation glossary and FAA regulations from the US Code of Federal Regulations. Note that the site "supports Netscape and Microsoft Internet Explorer only."

1997-01-01

59

Transfer Learning for Activity Recognition: A Survey  

PubMed Central

Many intelligent systems that focus on the needs of a human require information about the activities being performed by the human. At the core of this capability is activity recognition, which is a challenging and well-researched problem. Activity recognition algorithms require substantial amounts of labeled training data yet need to perform well under very diverse circumstances. As a result, researchers have been designing methods to identify and utilize subtle connections between activity recognition datasets, or to perform transfer-based activity recognition. In this paper we survey the literature to highlight recent advances in transfer learning for activity recognition. We characterize existing approaches to transfer-based activity recognition by sensor modality, by differences between source and target environments, by data availability, and by type of information that is transferred. Finally, we present some grand challenges for the community to consider as this field is further developed. PMID:24039326

Cook, Diane; Feuz, Kyle D.; Krishnan, Narayanan C.

2013-01-01

60

Naval Aviation Maintenance Office Information Strategy Plan  

SciTech Connect

Data Systems Engineering Organization (DSEO) personnel, together with members of Naval Aviation Maintenance Office (NAMO), developed an Information Strategy Plan (ISP) using a combination of Information Engineering (IE) methodologies. The purpose of the ISP was to comprehensively and objectively analyze the information requirements of NAMO. The ISP activities began with structures interviews of the NAMO top level management to identify the information needs and functions crucial to the NAMO organization. Joint Applications Design (JAD) sessions were held with functional experts to further enhance what was learned during the interview cycle. The information gathered through interviews, JAD sessions, and survey of the current systems was used to develop the Strategic Plan and the deliverables of an ISP: the Information Architecture, Business Systems Architecture, and Technical Architecture. These architectures are detailed, along with the major findings, recommendations, strategies, and plans for implementing further stages of IE. 72 figs.

Halsey, P.J.; Busbee, M.E.; Miller, L.M.; Wills, J.W.; Woods, S.D.

1990-06-01

61

Aviation system capacity improvements through technology  

NASA Technical Reports Server (NTRS)

A study was conducted with the primary objective of determining the impact of technology on capacity improvements in the U.S. air transportation system and, consequently, to assess the areas where NASA's expertise and technical contributions would be the most beneficial. The outlook of the study is considered both near- and long-term (5 to 25 years). The approach was that of actively working with the Massachusetts Institute of Technology (MIT) Flight Transportation Laboratory and included interactions with 'users' outside of both agencies as well as with organizations within. This report includes an overall survey of what are believed to be the causes of the capacity problems, ongoing work with the Federal Aviation Administration (FAA) to alleviate the problems, and identifies improvements in technology that would increase capacity and reduce delays.

Harvey, W. Don

1995-01-01

62

Aviation Teachers Resource  

NSDL National Science Digital Library

The Aeronautics Learning Laboratory presents a basic guide to teaching and learning aviation. The collection of links and articles provides exploration into the science and math behind aviation, in addition to practical considerations such as government qualification requirements. The teacher-focused research provides lesson plans for K-4, 5-8, and 9-12, but versions of the 9-12 have been adapted for college-level study. Florida International University hopes that this website will encourage more young people to go into aviation by preparing them with the knowledge and skills necessary to find gainful employment in the aviation industry.

63

Airborne volcanic ash; a global threat to aviation  

USGS Publications Warehouse

The world's busy air traffic corridors pass over or downwind of hundreds of volcanoes capable of hazardous explosive eruptions. The risk to aviation from volcanic activity is significant - in the United States alone, aircraft carry about 300,000 passengers and hundreds of millions of dollars of cargo near active volcanoes each day. Costly disruption of flight operations in Europe and North America in 2010 in the wake of a moderate-size eruption in Iceland clearly demonstrates how eruptions can have global impacts on the aviation industry. Airborne volcanic ash can be a serious hazard to aviation even hundreds of miles from an eruption. Encounters with high-concentration ash clouds can diminish visibility, damage flight control systems, and cause jet engines to fail. Encounters with low-concentration clouds of volcanic ash and aerosols can accelerate wear on engine and aircraft components, resulting in premature replacement. The U.S. Geological Survey (USGS), in cooperation with national and international partners, is playing a leading role in the international effort to reduce the risk posed to aircraft by volcanic eruptions.

Neal, Christina A.; Guffanti, Marianne C.

2010-01-01

64

ENVIRONMENT AVIATION, ENERGY  

E-print Network

#12;03 ENVIRONMENT AVIATION, ENERGY "Flying--the worst thing to do ... The dirtiest industry TRANSPORT ASSOCIATION PRESIDENT AND CEO, CONGRESSIONAL TESTIMONY, 200712 Aviation, environment, and energy the roaring jet engines coming from outraged ... residents and politicians." 13 BOSTON HERALD, AUGUST 12, 2007

Peraire, Jaime

65

Aviation turbine fuels, 1982  

Microsoft Academic Search

Properties of some aviation turbine fuels marketed in the United States during 1982 are presented in this report. The samples represented are typical 1982 production and were analyzed in the laboratories of 14 manufacturers of aviation turbine (jet) fuels. The data were submitted for study, calculation, and compilation under a cooperative agreement between the Department of Energy (DOE), Bartlesville Energy

E. M. Shelton; C. L. Dickson

1983-01-01

66

General Aviation Pilots' Perceived Usage and Valuation of Aviation Weather Information Sources  

NASA Technical Reports Server (NTRS)

Aviation suffers many accidents due to the lack of good weather information in flight. Existing aviation weather information is difficult to obtain when it is most needed and is not well formatted for in-flight use. Because it is generally presented aurally, aviation weather information is difficult to integrate with spatial flight information and retain for reference. Efforts, by NASA's Aviation Weather Information (AWIN) team and others, to improve weather information accessibility, usability and decision aiding will enhance General Aviation (GA) pilots' weather situation awareness and decision-making and therefore should improve the safety of GA flight. Consideration of pilots' economic concerns will ensure that in-flight weather information systems are financially accessible to GA pilots as well. The purpose of this survey was to describe how aviation operator communities gather and use weather information as well as how weather related decisions are made between flight crews and supporting personnel. Pilots of small GA aircraft experience the most weather-related accidents as well as the most fatal weather related accident. For this reason, the survey design and advertisement focused on encouraging participation from GA pilots. Perhaps as a result of this emphasis, most responses, 97 responses or 85% of the entire response set, were from GA pilots, This paper presents only analysis of these GA pilots' responses. The insights provided by this survey regarding GA pilots' perceived value and usage of current aviation weather information. services, and products provide a basis for technological approaches to improve GA safety. Results of this survey are discussed in the context of survey limitations and prior work, and serve as the foundation for a model of weather information value, guidance for the design of in-flight weather information systems, and definition of further research toward their development.

Latorella, Kara; Lane, Suzanne; Garland, Daniel

2002-01-01

67

Aviation Human Factors Division Institute of Aviation  

E-print Network

reconfiguration of the interconnected North American electric power grid, operators must now comprehend a vast between adjacent utilities, and the actions of operators now influence not only the utility companies who (Aviation Human Factors Division) and Thomas J. Overbye (Electrical and Computer Engineering) Technical

68

Improved weather information and aviation  

NASA Technical Reports Server (NTRS)

The major impacts of weather forecasts on aviation are reviewed. Topics discussed include: (1) present and projected structure of American aviation, (2) weather problems considered particularly important for aviation, (3) projected needs for improved weather information by aviators, (4) safety and economics, and (5) future studies utilizing satellite meteorology.

Hallahan, K.; Zdanys, V.

1973-01-01

69

Collegiate Aviation Review. September 1995.  

ERIC Educational Resources Information Center

This document contains three papers on aviation education. "Aviation/Aerospace Teacher Education Workshops: Program Development and Implementation" (Mavis F. Green) discusses practical issues in the development of an aviation/aerospace teacher education workshop designed to help elementary school teachers promote aviation to their students.…

Barker, Ballard M., Ed.

70

Mycological survey of activated sludge in MBRs.  

PubMed

The objective of this research was to conduct a survey of fungi in activated sludge plants with membrane bioreactors (MBRs). Thirty-six samples of both aerobic and anoxic activated sludge were taken from two plants with MBRs treating domestic wastewater. Over a period of 8 months, two samples from each plant were taken per month. The samples were prepared for count and identification of fungi. The obtained data show that 61 species belonging to 30 genera were identified from activated sludge samples, under aerobic conditions (27 genera and 54 species) and anoxic conditions (21 genera and 39 species), by culturing at 30 °C for 15 days. In aerobic activated sludge samples, the prevalence of Geotrichum candidum was 100% followed by Fusarium (72.2%), yeast (61.1%), Aspergillus (50.0%), Penicillium (50.0%) and Trichoderma (41.6%), while in anoxic activated sludge, G. candidum (94.4%), Fusarium (91.6%), Aspergillus (77.7%), yeast (63.8%), Penicillium (50.0%) and Trichoderma (50.0%) species were the most prevalent. In addition, the other genera found included Chaetomum, Chrysosporium, Cladosporium, Doratomyces, Gibberella, Gliocladium, Gymnoascus, Mucor, Paecilomyces, Phialophora, Rhizopus, Scopulariopsis, Stachybotrys, Stemphylium and others. The results indicate that aerobic and anoxic activated sludge provides a suitable habitat for the growth and sporulation of different groups of fungi, both saprophytic and pathogenic. PMID:21554420

Awad, Mohamed F; Kraume, M

2011-09-01

71

Aviation Data Integration System  

NASA Technical Reports Server (NTRS)

During the analysis of flight data and safety reports done in ASAP and FOQA programs, airline personnel are not able to access relevant aviation data for a variety of reasons. We have developed the Aviation Data Integration System (ADIS), a software system that provides integrated heterogeneous data to support safety analysis. Types of data available in ADIS include weather, D-ATIS, RVR, radar data, and Jeppesen charts, and flight data. We developed three versions of ADIS to support airlines. The first version has been developed to support ASAP teams. A second version supports FOQA teams, and it integrates aviation data with flight data while keeping identification information inaccessible. Finally, we developed a prototype that demonstrates the integration of aviation data into flight data analysis programs. The initial feedback from airlines is that ADIS is very useful in FOQA and ASAP analysis.

Kulkarni, Deepak; Wang, Yao; Windrem, May; Patel, Hemil; Keller, Richard

2003-01-01

72

Initial Cognitive Performance Predicts Longitudinal Aviator Performance  

PubMed Central

Objectives. The goal of the study was to improve prediction of longitudinal flight simulator performance by studying cognitive factors that may moderate the influence of chronological age. Method. We examined age-related change in aviation performance in aircraft pilots in relation to baseline cognitive ability measures and aviation expertise. Participants were aircraft pilots (N = 276) aged 40–77.9. Flight simulator performance and cognition were tested yearly; there were an average of 4.3 (± 2.7; range 1–13) data points per participant. Each participant was classified into one of the three levels of aviation expertise based on Federal Aviation Administration pilot proficiency ratings: least, moderate, or high expertise. Results. Addition of measures of cognitive processing speed and executive function to a model of age-related change in aviation performance significantly improved the model. Processing speed and executive function performance interacted such that the slowest rate of decline in flight simulator performance was found in aviators with the highest scores on tests of these abilities. Expertise was beneficial to pilots across the age range studied; however, expertise did not show evidence of reducing the effect of age. Discussion. These data suggest that longitudinal performance on an important real-world activity can be predicted by initial assessment of relevant cognitive abilities. PMID:21586627

Jo, Booil; Adamson, Maheen M.; Kennedy, Quinn; Noda, Art; Hernandez, Beatriz; Zeitzer, Jamie M.; Friedman, Leah F.; Fairchild, Kaci; Scanlon, Blake K.; Murphy, Greer M.; Taylor, Joy L.

2011-01-01

73

Alternative Aviation Fuel Experiment (AAFEX)  

NASA Technical Reports Server (NTRS)

The rising cost of oil coupled with the need to reduce pollution and dependence on foreign suppliers has spurred great interest and activity in developing alternative aviation fuels. Although a variety of fuels have been produced that have similar properties to standard Jet A, detailed studies are required to ascertain the exact impacts of the fuels on engine operation and exhaust composition. In response to this need, NASA acquired and burned a variety of alternative aviation fuel mixtures in the Dryden Flight Research Center DC-8 to assess changes in the aircraft s CFM-56 engine performance and emission parameters relative to operation with standard JP-8. This Alternative Aviation Fuel Experiment, or AAFEX, was conducted at NASA Dryden s Aircraft Operations Facility (DAOF) in Palmdale, California, from January 19 to February 3, 2009 and specifically sought to establish fuel matrix effects on: 1) engine and exhaust gas temperatures and compressor speeds; 2) engine and auxiliary power unit (APU) gas phase and particle emissions and characteristics; and 3) volatile aerosol formation in aging exhaust plumes

Anderson, B. E.; Beyersdorf, A. J.; Hudgins, C. H.; Plant, J. V.; Thornhill, K. L.; Winstead, E. L.; Ziemba, L. D.; Howard, R.; Corporan, E.; Miake-Lye, R. C.; Herndon, S. C.; Timko, M.; Woods, E.; Dodds, W.; Lee, B.; Santoni, G.; Whitefield, P.; Hagen, D.; Lobo, P.; Knighton, W. B.; Bulzan, D.; Tacina, K.; Wey, C.; VanderWal, R.; Bhargava, A.

2011-01-01

74

Chromospherically Active Stars in the RAVE Survey  

NASA Astrophysics Data System (ADS)

We present a qualitative characterization of activity levels of a large database of ~44,000 candidate RAVE stars (unbiased, magnitude limited medium resolution survey) that show chromospheric emission in the Ca II infrared triplet and this vastly enlarges previously known samples. Our main motivation to study these stars is the anti-correlation of chromospheric activity and stellar ages that could be calibrated using stellar clusters with known ages. Locally linear embedding used for a morphological classification of spectra revealed 53,347 cases with a suggested emission component in the calcium lines. We analyzed a subsample of ~44,000 stars with S/N>20 using a spectral subtraction technique where observed reference spectra of inactive stars were used as templates instead of synthetic ones. Both the equivalent width of the excess emission for each calcium line and their sum is derived for all candidate active stars with no respect to the origin of their emission flux. ~17,800 spectra show a detectable chromospheric flux with at least 2 ? confidence level. The overall distribution of activity levels shows a bimodal shape, with the first peak coinciding with inactive stars and the second with the pre-main-sequence cases.

Žerjal, M.; Zwitter, T.; Matijevi?, G.; Strassmeier, K. G.

2014-01-01

75

76 FR 39884 - Aviation Security Advisory Committee  

Federal Register 2010, 2011, 2012, 2013, 2014

...DEPARTMENT OF HOMELAND SECURITY Aviation Security Advisory Committee AGENCY...the re-establishment of the Aviation Security Advisory Committee (ASAC...the commerce of aviation. The Aviation Security Advisory Committee The...

2011-07-07

76

Preliminary study of NAVSTAR/GPS for general aviation  

NASA Technical Reports Server (NTRS)

The activities conducted as a planning effort to focus attention on the applicability of the global positioning system for general aviation are described. The description of GPS, its impact on economic and functional aspects of general aviation avionics, as well as a declaration of potential extensions of the basic concept have been studied in detail.

Alberts, R. D.; Ruedger, W. H.

1976-01-01

77

Volcanic-ash hazard to aviation during the 2003-2004 eruptive activity of Anatahan volcano, Commonwealth of the Northern Mariana Islands  

USGS Publications Warehouse

Within the Commonwealth of the Northern Mariana Islands (CNMI), Anatahan is one of nine active subaerial volcanoes that pose hazards to major air-traffic routes from airborne volcanic ash. The 2003-2004 eruptive activity of Anatahan volcano affected the region's aviation operations for 3 days in May 2003. On the first day of the eruption (10 May 2003), two international flights from Saipan to Japan were cancelled, and several flights implemented ash-avoidance procedures. On 13 May 2003, a high-altitude flight through volcanic gas was reported, with no perceptible damage to the aircraft. TOMS and MODIS analysis of satellite data strongly suggests that no significant ash and only minor amounts of SO2 were involved in the incident, consistent with crew observations. On 23 May 2003, airport operations were disrupted when tropical-cyclone winds dispersed ash to the south, dusting Saipan with light ashfall and causing flight cancellations there and at Guam 320 km south of the volcano. Operational (near-real-time) monitoring of ash clouds produced by Anatahan has been conducted since the first day of the eruption on 10 May 2003 by the Washington Volcanic Ash Advisory Center (VAAC). The VAAC was among the first groups outside of the immediate area of the volcano to detect and report on the unexpected eruption of Anatahan. After being contacted about an unusual cloud by National Weather Service forecasters in Guam at 1235 UTC on 10 May 2003, the VAAC analyzed GOES 9 images, confirming Anatahan as the likely source of an ash cloud and estimating that the eruption began at about 0730 UTC. The VAAC issued its first Volcanic Ash Advisory for Anatahan at 1300 UTC on 10 May 2003 more than 5 h after the start of the eruption, the delay reflecting the difficulty of detecting and confirming a surprise eruption at a remote volcano with no in situ real-time geophysical monitoring. The initial eruption plume reached 10.7-13.4 km (35,000-44,000 ft), well into jet cruise altitudes; thereafter, the maximum plume height decreased and during the rest of the eruption usually did not exceed ???5 km (???17,000 ft), which lessened the potential hazard to aircraft at higher cruise altitudes. Drifting ash clouds commonly extended hundreds of kilometers from the volcano, occasionally as far west as the Philippines. Over the course of the eruptive activity in 2003-2004, the VAAC issued 323 advisories (168 with graphical depictions of ash clouds) for Anatahan, serving as a reliable source of ash-cloud information for aviation-related meteorological offices and air carriers. With a record of frequent eruptions in the CNMI, continued satellite and in situ real-time geophysical monitoring is needed at Anatahan and other Marianas volcanoes so that potential hazards to aviation from any future eruptive activity can be quickly and correctly assessed. ?? 2005 Elsevier B.V. All rights reserved.

Guffanti, M.; Ewert, J.W.; Gallina, G.M.; Bluth, G.J.S.; Swanson, G.L.

2005-01-01

78

Aviation Opens Antarctica  

NSDL National Science Digital Library

The history of aviation and the history of Antarctic exploration and science are inextricably entwined. In 1929, naval aviation pioneer Richard E. Byrd, became the first person to fly over the South Pole, dropping a flag to mark his achievement and breaking the isolation of the skies over the Pole for the first time since the age of the dinosaurs. Today, more than 100 such flights annually cross the 900 miles between McMurdo Station (NSF's logistics hub in Antarctica) and the South Pole.

79

Aviation Maintenance Alerts  

NSDL National Science Digital Library

The FAA has published monthly aviation maintenance alerts online for the past 10 years. This site is of particular interests for those studying or teaching aviation maintenance, as it will provide users with up to date maintenance alerts. The alerts contain critical reports that regard manufacturing defects or design flaws, along with any known solutions to the issues. In addition to alerts, visitors can find out how to report safety issues, as well as obtain information on aircraft safety programs funded by the FAA.

80

Aviation--An Individualized Approach  

ERIC Educational Resources Information Center

Describes an individualized aviation course for high school seniors. The course, broken down into Learner Education Guides with students progressing at their own learning rates, consists of the history of aviation, career opportunities, the space program, basic aeronautics, navigation, meteorology, Federal Aviation Administration regulations and…

Seeds, Fred F.

1974-01-01

81

General Aviation Pilot Education Program.  

ERIC Educational Resources Information Center

General Aviation Pilot Education (GAPE) was a safety program designed to improve the aeronautical education of the general aviation pilot in anticipation that the national aircraft accident rate might be improved. GAPE PROGRAM attempted to reach the average general aviation pilot with specific and factual information regarding the pitfalls of his…

Cole, Warren L.

82

Collegiate Aviation Review. September 1996.  

ERIC Educational Resources Information Center

This document contains three papers on aviation education. "Academic Integrity in Higher Education: Is Collegiate Aviation Education at Risk?" (Jeffrey A. Johnson) discusses academic integrity and legal issues in higher education and argues that academic integrity needs to be an integral part of collegiate aviation education if students expect to…

Barker, Ballard M., Ed.

83

Active optics in Large Synoptic Survey Telescope  

NASA Astrophysics Data System (ADS)

The Large Synoptic Survey Telescope (LSST) has a 3.5º field of view and F/1.2 focus that makes the performance quite sensitive to the perturbations of misalignments and mirror surface deformations. In order to maintain the image quality, LSST has an active optics system (AOS) to measure and correct those perturbations in a closed loop. The perturbed wavefront errors are measured by the wavefront sensors (WFS) located at the four corners of the focal plane. The perturbations are solved by the non-linear least square algorithm by minimizing the rms variation of the measured and baseline designed wavefront errors. Then the correction is realized by applying the inverse of the perturbations to the optical system. In this paper, we will describe the correction processing in the LSST AOS. We also will discuss the application of the algorithm, the properties of the sensitivity matrix and the stabilities of the correction. A simulation model, using ZEMAX as a ray tracing engine and MATLAB as an analysis platform, is set up to simulate the testing and correction loop of the LSST AOS. Several simulation examples and results are presented.

Liang, Ming; Krabbendam, Victor; Claver, Charles F.; Chandrasekharan, Srinivasan; Xin, Bo

2012-09-01

84

Worksite Health Promotion Activities. 1992 National Survey. Summary Report.  

ERIC Educational Resources Information Center

The survey reported in this document examined worksite health promotion and disease prevention activities in 1,507 private worksites in the United States. Specificlly, the survey assessed policies, practices, services, facilities, information, and activities sponsored by employers to improve the health of their employees, and assessed health…

Public Health Service (DHHS), Rockville, MD. Office of Disease Prevention and Health Promotion.

85

DECONTAMINATION OF AVIATION MATERIEL  

Microsoft Academic Search

Modern warfare may expose aviation materiel to the action of radioactive ; substances. While this may not affect the quality of the material or the flying ; capacity of airplanes, heavy contamination presents a threat to peoples' lives. ; It is therefore imperative to decontaminate combat material and remove ; radioactive substances and dust from surfaces as soon as possible.

A. Akopov; A. Popov

1958-01-01

86

Collegiate Aviation Review, 1999.  

ERIC Educational Resources Information Center

This document, published annually, contains six papers devoted to aviation education. "Enhancing Global Competitiveness: Benchmarking Airline Operational Performance in Highly Regulated Environments" (Brent D. Bowen, Dean Headley, Karisa D. Kane, Rebecca K. Lutte) outlines a model to help policymakers and others evaluate the effects of airline…

Carney, Thomas Q., Ed.; Luedtke, Jacqueline R., Ed.; Johnson, Jeffrey A., Ed.

1999-01-01

87

General Aviation Manpower Study.  

ERIC Educational Resources Information Center

Highlights a study examining manpower supply/demand in general aviation. Eight job categories were examined: pilots, flight instructors, engineers, machinists/toolers, and A&P, airframe, and avionics technicians. Findings among others indicate that shortages in indicated job categories exist because personnel are recruited by other industries. (JN)

Feller, Richard

1982-01-01

88

Aviation turbine fuels, 1985  

Microsoft Academic Search

Samples of this report are typical 1985 production and were analyzed in the laboratories of 17 manufactures of aviation turbine (jet) fuels. The data were submitted for study, calculation, and compilation under a cooperative agreement between the National Institute for Petroleum and Energy Research (NIPER), Bartlesville, Oklahoma, the American Petroleum Institute (API), and the United States Department of Energy (DOE),

C. L. Dickson; P. W. Woodward

1986-01-01

89

Collegiate Aviation Review, 2001.  

ERIC Educational Resources Information Center

This issue contains these 12 papers: "Exploring the Viability of an Organizational Readiness Assessment for Participatory Management Programs in a Passenger Airline Carrier" (Al Bellamy); "Teaching the Pilots of the New Millennium: Adult Cooperative Education in Aviation Education" (Joseph F. Clark, III); "The Transfer of Flight Training…

Carney, Thomas Q., Ed.

2001-01-01

90

Collegiate Aviation Review.  

ERIC Educational Resources Information Center

This document contains five research papers devoted to aviation education and training. The first paper, "An Examination of the U.S. Airline Policy Regarding Child Restraint Systems" (Larry Carstenson, Donald Sluti, and Jacqueline Luedtke), examines communication of airline policy from airline management to airline personnel to the traveling…

Lehrer, Henry R., Ed.

91

Current research on aviation weather (bibliography)  

NASA Technical Reports Server (NTRS)

This bibliography of 326 readily usable references of basic and applied research programs related to the various areas of aviation meteorology was assembled. A literature search was conducted which surveyed the major abstract publications such as the International Aerospace Abstracts, the Meteorological and Geoastrophysical Abstracts, and the Scientific and Technical Aerospace Reports. In addition, NASA and DOT computer literature searches were run; and NASA, NOAA, and FAA research project managers were requested to provide writeups on their ongoing research.

Durham, D. E.; Frost, W.

1978-01-01

92

Faith based aviation: An ethnographic study of missionary flights international  

NASA Astrophysics Data System (ADS)

The development of faith-based missionary aviation is a post-World War II phenomenon. The war effort demonstrated the value, utility, and global reach of aviation to remote, underdeveloped areas of the world. With the beginnings of a worldwide infrastructure for aviation, Christian aviators realized aviation could increase the range and effectiveness of their efforts to reach the world for Christ (Mellis, 2006). Although individual organizations provide statistical information and data about flight operations there is a lack of external evidence and relevant research literature confirming the scope and value of these faith based aviation organizations and operations. A qualitative, ethnographic study was conducted to document the activities of one faith-based aviation organization to gain an understanding of this little known aspect of civilian aviation. The study was conducted with Missionary Flights International (MFI) of Fort Pierce, FL which has been involved in faith-based, missionary aviation since its inception in 1964. As an aviation organization "MFI strives to offer affiliated missions the kind of efficient service and professionalism expected of an airline operation" (Missionary Flights International, 2013, p.1). MFI is a lifeline for missionaries to Haiti and the Dominican Republic, fulfilling their motto of "Standing in the Gap". MFI provides twice a week service to the island of Hispaniola and the Republic of Haiti. In this in-depth study insight and understanding was gained into the purpose of MFI, their daily routines and operations, and the challenges they face in maintaining their flight services to Haiti. This study provided documentation of the value and utility of such aviation efforts and of the individuals involved in this endeavor.

Cooper, Joseph H.

93

Aviation Particle Emissions Workshop  

NASA Technical Reports Server (NTRS)

The Aviation Particle Emissions Workshop was held on November 18 19, 2003, in Cleveland, Ohio. It was sponsored by the National Aeronautic and Space Administration (NASA) under the Vehicle Systems Program (VSP) and the Ultra- Efficient Engine Technology (UEET) Project. The objectives were to build a sound foundation for a comprehensive particulate research roadmap and to provide a forum for discussion among U.S. stakeholders and researchers. Presentations included perspectives from the Federal Aviation Administration, the U.S. Environmental Protection Agency, NASA, and United States airports. There were five interactive technical sessions: sampling methodology, measurement methodology, particle modeling, database, inventory and test venue, and air quality. Each group presented technical issues which generated excellent discussion. The five session leads collaborated with their members to present summaries and conclusions to each content area.

Wey, Chowen C. (Editor)

2004-01-01

94

TRANSPORTATION CENTER--NORTHWESTERN UNIVERSITY Aviation Symposium: The Future for Aviation  

E-print Network

TRANSPORTATION CENTER--NORTHWESTERN UNIVERSITY Aviation Symposium: The Future for Aviation April The Transportation Center has organized a special Aviation Symposium focusing on important aviation industry topics, Professor of Transportation at Northwestern University and former Director of the Transportation Center

Bustamante, Fabián E.

95

AWE: aviation weather data visualization environment  

Microsoft Academic Search

Weather is one of the major causes of aviation accidents. General aviation (GA) flights account for 92% of all the aviation accidents. In spite of all the official and unofficial sources of weather visualization tools available to pilots, there is an urgent need for visual- izing several weather related data tailored for general aviation pilots. Our system, Aviation Weather Data

Lilly Spirkovska; Suresh K. Lodha

2002-01-01

96

VLBI Surveys of Active Galactic Nuclei  

E-print Network

A review is given on the current status and selected results from large VLBI surveys of compact extragalactic radio sources made between 13 cm and 3 mm wavelengths and covering the entire sky. More than 4200 objects are observed and imaged with dynamic ranges from a hundred to several thousand at (sub)parsec scales. Implications to the VSOP-2 project are discussed.

Y. Y. Kovalev

2008-04-07

97

NASA aviation safety reporting system  

NASA Technical Reports Server (NTRS)

During the second quarter of the Aviation Safety Reporting System (ASRS) operation, 1,497 reports were received from pilots, controllers, and others in the national aviation system. Details of the administration and results of the program to date are presented. Examples of alert bulletins disseminated to the aviation community are presented together with responses to those bulletins. Several reports received by ASRS are also presented to illustrate the diversity of topics covered by reports to the system.

1976-01-01

98

Space Weather Impacts on Aviation  

NSDL National Science Digital Library

Space Weather Impacts on Aviation examines the effects of solar flares, coronal mass ejections, and other solar phenomena on aviation operations. The module builds on background science knowledge taught in the course prerequisite, Space Weather Basics, 2nd Edition. The content gives aviation forecasters and others an overview of the information and products available from NOAA's Space Weather Prediction Center and provides practice interpreting and using those products for decision support during space weather events.

2014-09-14

99

Suggestions for Popularizing Civil Aviation  

NASA Technical Reports Server (NTRS)

The public generally is taking very little interest in the progress of Civil Aviation, and the time has come to educate the public in aeronautics and to make them realize the far-reaching importance of air transport. Briefly, the whole problem resolves itself into discovering and applying means for bringing some of the many aspects and effects of civil aviation into the everyday lives of the public. The report suggests three principal groups of methods: (1) Bring aviation into daily contact with the public. (2) Bring the public into daily contact with aviation. (3) General publicity.

1926-01-01

100

General aviation avionics equipment maintenance  

NASA Technical Reports Server (NTRS)

Maintenance of general aviation avionics equipment was investigated with emphasis on single engine and light twin engine general aviation aircraft. Factors considered include the regulatory agencies, avionics manufacturers, avionics repair stations, the statistical character of the general aviation community, and owners and operators. The maintenance, environment, and performance, repair costs, and reliability of avionics were defined. It is concluded that a significant economic stratification is reflected in the maintenance problems encountered, that careful attention to installations and use practices can have a very positive impact on maintenance problems, and that new technologies and a general growth in general aviation will impact maintenance.

Parker, C. D.; Tommerdahl, J. B.

1978-01-01

101

General Aviation Task Force report  

NASA Technical Reports Server (NTRS)

General aviation is officially defined as all aviation except scheduled airlines and the military. It is the only air transportation to many communities throughout the world. In order to reverse the recent decline in general aviation aircraft produced in the United States, the Task Force recommends that NASA provide the expertise and facilities such as wind tunnels and computer codes for aircraft design. General aviation manufacturers are receptive to NASA's innovations and technological leadership and are expected to be effective users of NASA-generated technologies.

1993-01-01

102

Technical highlights in general aviation  

NASA Technical Reports Server (NTRS)

Improvements in performance, safety, efficiency, and emissions control in general aviation craft are reviewed. While change is slow, the U.S. industries still account for the bulk (90%) of the world's general aviation fleet. Advances in general aviation aerodynamics, structures and materials, acoustics, avionics, and propulsion are described. Supercritical airfoils, drag reduction design, stall/spin studies, crashworthiness and passenger safety, fiberglass materials, flight noise abatement, interior noise and vibration reduction, navigation systems, quieter and cleaner (reciprocating, turboprop, turbofan) engines, and possible benefits of the Global Position Satellite System to general aviation navigation are covered in the discussion. Some of the developments are illustrated.

Stickle, J. W.

1977-01-01

103

UH-1 Helicopter Mechanic (MOS 67N20) Job Description Survey: Performance of Specific Maintenance Tasks.  

ERIC Educational Resources Information Center

The report is the second of two describing the results of a world-wide survey of the maintenance activities of UH-1 helicopter mechanics for the purpose of studying the relationships among job requirements, training, and manpower considerations for aviation maintenance. A summary of the results of the first report is included. The survey

Schulz, Russel E.; And Others

104

Entrepreneurship within General Aviation  

NASA Technical Reports Server (NTRS)

Many modern economic theories place great importance upon entrepreneurship in the economy. Some see the entrepreneur as the individual who bears risk of operating a business in the face of uncertainty about future conditions and who is rewarded through profits and losses. The 20th century economist Joseph Schumpter saw the entrepreneur as the medium by which advancing technology is incorporated into society as businesses seek competitive advantages through more efficient product development processes. Due to the importance that capitalistic systems place upon entrepreneurship, it has become a well studied subject with many texts to discuss how entrepreneurs can succeed in modern society. Many entrepreneuring and business management courses go so far as to discuss the characteristic phases and prominent challenges that fledgling companies face in their efforts to bring a new product into a competitive market. However, even with all of these aids, start-up companies fail at an enormous rate. Indeed, the odds of shepherding a new company through the travails of becoming a well established company (as measured by the ability to reach Initial Public Offering (IPO)) have been estimated to be six in 1,000,000. Each niche industry has characteristic challenges which act as barriers to entry for new products into that industry. Thus, the applicability of broad generalizations is subject to limitations within niche markets. This paper will discuss entrepreneurship as it relates to general aviation. The goals of this paper will be to: introduce general aviation; discuss the details of marrying entrepreneurship with general aviation; and present a sample business plan which would characterize a possible entrepreneurial venture.

Ullmann, Brian M.

1995-01-01

105

General aviation technology assessment  

NASA Technical Reports Server (NTRS)

The existing problem areas in general aviation were investigated in order to identify those which can benefit from technological payoffs. The emphasis was placed on acceptance by the pilot/passenger in areas such as performance, safety, handling qualities, ride quality, etc. Inputs were obtained from three sectors: industry; government; and user, although slanted toward the user group. The results should only be considered preliminary due to the small sample sizes of the data. Trends are evident however and a general methodology for allocating effort in future programs is proposed.

Jacobson, I. D.

1975-01-01

106

Alternative aviation turbine fuels  

NASA Technical Reports Server (NTRS)

The efficient utilization of fossil fuels by future jet aircraft may necessitate the broadening of current aviation turbine fuel specifications. The most significant changes in specifications would be an increased aromatics content and a higher final boiling point in order to minimize refinery energy consumption and costs. These changes would increase the freezing point and might lower the thermal stability of the fuel and could cause increased pollutant emissions, increased smoke and carbon formation, increased combustor liner temperatures, and poorer ignition characteristics. This paper discusses the effects that broadened specification fuels may have on present-day jet aircraft and engine components and the technology required to use fuels with broadened specifications.

Grobman, J.

1977-01-01

107

Agent Architecture for Aviation Data Integration System  

NASA Technical Reports Server (NTRS)

This paper describes the proposed agent-based architecture of the Aviation Data Integration System (ADIS). ADIS is a software system that provides integrated heterogeneous data to support aviation problem-solving activities. Examples of aviation problem-solving activities include engineering troubleshooting, incident and accident investigation, routine flight operations monitoring, safety assessment, maintenance procedure debugging, and training assessment. A wide variety of information is typically referenced when engaging in these activities. Some of this information includes flight recorder data, Automatic Terminal Information Service (ATIS) reports, Jeppesen charts, weather data, air traffic control information, safety reports, and runway visual range data. Such wide-ranging information cannot be found in any single unified information source. Therefore, this information must be actively collected, assembled, and presented in a manner that supports the users problem-solving activities. This information integration task is non-trivial and presents a variety of technical challenges. ADIS has been developed to do this task and it permits integration of weather, RVR, radar data, and Jeppesen charts with flight data. ADIS has been implemented and used by several airlines FOQA teams. The initial feedback from airlines is that such a system is very useful in FOQA analysis. Based on the feedback from the initial deployment, we are developing a new version of the system that would make further progress in achieving following goals of our project.

Kulkarni, Deepak; Wang, Yao; Windrem, May; Patel, Hemil; Wei, Mei

2004-01-01

108

WRF-EMS Aviation Products  

NSDL National Science Digital Library

This lesson illustrates how numerical guidance from the Weather Research and Forecasting Model - Environmental Modeling System (WRF-EMS) can be added to surface observations, satellite graphics, and conceptual models of important aviation phenomena, to produce TAFs. Specifically, the lesson describes how visibility, cloud ceilings, and the flight categories variables provide values for aviation forecasts in Africa.

2014-09-14

109

Aviation Weather Information Requirements Study  

NASA Technical Reports Server (NTRS)

The Aviation Safety Program (AvSP) has as its goal an improvement in aviation safety by a factor of 5 over the next 10 years and a factor of 10 over the next 20 years. Since weather has a big impact on aviation safety and is associated with 30% of all aviation accidents, Weather Accident Prevention (WxAP) is a major element under this program. The Aviation Weather Information (AWIN) Distribution and Presentation project is one of three projects under this element. This report contains the findings of a study conducted by the Georgia Tech Research Institute (GTRI) under the Enhanced Weather Products effort, which is a task under AWIN. The study examines current aviation weather products and there application. The study goes on to identify deficiencies in the current system and to define requirements for aviation weather products that would lead to an increase in safety. The study also provides an overview the current set of sensors applied to the collection of aviation weather information. New, modified, or fused sensor systems are identified which could be applied in improving the current set of weather products and in addressing the deficiencies defined in the report. In addition, the study addresses and recommends possible sensors for inclusion in an electronic pilot reporting (EPIREP) system.

Keel, Byron M.; Stancil, Charles E.; Eckert, Clifford A.; Brown, Susan M.; Gimmestad, Gary G.; Richards, Mark A.; Schaffner, Philip R. (Technical Monitor)

2000-01-01

110

Aerospace/Aviation Science Occupations.  

ERIC Educational Resources Information Center

The guide was developed to provide secondary students the opportunity to study aviation and aerospace education from the conceptual and career approach coupled with general education specifically related to science. Unit plans were prepared to motivate, develop skills, and offer counseling to the students of aviation science and occupational…

North Carolina State Dept. of Public Instruction, Raleigh. Div. of Occupational Education.

111

Microbial growth in aviation fuel  

Microsoft Academic Search

Growth of microorganisms in petroleum products has been recorded since 1895, causing fouling, malfunction and corrosion in storage tanks, airfield equipment, pipelines, airframes and engines. This paper considers the problems that fuel microbes pose to the aviation industry and discusses the International Air Transport Association Aviation Working Group's “Guidance Material on Microbiological Contamination in Aircraft Fuel Tanks”.

Ted Hill

2003-01-01

112

NASA general aviation research overview  

NASA Technical Reports Server (NTRS)

Review of current NASA research programs directly focused on general aviation. Significant accomplishments are cited in the areas of airfoil research, stall/spin technology, crashworthiness, and propulsion noise and efficiency. Highlights of recent NASA organizational developments affecting general aviation research are outlined.

Stickle, J. W.; Winblade, R. L.; Westfall, J. A.

1974-01-01

113

General Aviation Data Framework  

NASA Technical Reports Server (NTRS)

The Flight Research Services Directorate at the NASA Langley Research Center (LaRC) provides development and operations services associated with three general aviation (GA) aircraft used for research experiments. The GA aircraft includes a Cessna 206X Stationair, a Lancair Colombia 300X, and a Cirrus SR22X. Since 2004, the GA Data Framework software was designed and implemented to gather data from a varying set of hardware and software sources as well as enable transfer of the data to other computers or devices. The key requirements for the GA Data Framework software include platform independence, the ability to reuse the framework for different projects without changing the framework code, graphics display capabilities, and the ability to vary the interfaces and their performance. Data received from the various devices is stored in shared memory. This paper concentrates on the object oriented software design patterns within the General Aviation Data Framework, and how they enable the construction of project specific software without changing the base classes. The issues of platform independence and multi-threading which enable interfaces to run at different frame rates are also discussed in this paper.

Blount, Elaine M.; Chung, Victoria I.

2006-01-01

114

Some Aviation Growth Events  

NASA Technical Reports Server (NTRS)

The growth of aviation since the first flight of a heavier-than-air powered manned vehicle in 1903 has been somewhat remarkable. Some of the events that have influenced this growth are reviewed in this paper. This review will include some events prior to World War I; the influence of the war itself; the events during the post-war years including the establishment of aeronautical research laboratories; and the influence of World War II which, among other things, introduced new technologies that included rocket and jet propulsion and supersonic aerodynamics. The subsequent era of aeronautical research and the attendant growth in aviation over the past half century will be reviewed from the view point of the author who, since 1944, has been involved in the NACA/NASA aeronautical research effort at what is now the Langley Research Center in Hampton, Virginia. The review will discuss some of the research programs related to the development of some experimental aircraft, the Century series of fighter aircraft, multi-mission aircraft, advanced military aircraft and missiles, advanced civil aircraft, supersonic transports, spacecraft and others.

Spearman, M. Leroy

2002-01-01

115

Active Compliant Motion: A survey. Tine Lefebvre  

E-print Network

keywords: compliant motion, contact modeling, fine-motion planning, contact identification, force control-line, and a controller for executing the compliant motion commands with both the low-level feedback provided by sensors (Section 4), and control (Section 5) for active compliant motion. At present no fully autonomous compliant

Xiao, Jing

116

A Survey of Active Network Research  

Microsoft Academic Search

Abstract Active networks are a novel approach to network architecture in which the switches of the network perform customized computations on the messages flowing through them. This approach is motivated by both lead u ser applications, which perform user-driven computation at nodes within the network today, and the e mergence of mobile c ode technologies that make dynamic network service

D. L Tennenhouse

1996-01-01

117

Career Games - Online Activities and surveys  

NSDL National Science Digital Library

This site features several workshops and games that facilitate the PIE career development method practiced by Daniel Porot, a leading European pioneer in career design and job hunting. The site features a self-assessment, job targeting, open marketing, hidden markets, interviewing, overviews, site maps, and external links. This is a fun interactive set of activities.

Porot, Daniel

118

A survey of active network research  

Microsoft Academic Search

Abstract: Active networks are a novel approach to network architecture in which the switches of thenetwork perform customized computations on the messages flowing through them. Thisarchitecture is motivated by both lead applications which perform user-driven computationat nodes within the network today, and the emergence of mobile code and othertechnologies that make the goal of network service innovation attainable. In this

David L. Tennenhouse; Jonathan M. Smith; W. David Sincoskie; D. J. Wetherall; G. J. Minden

1997-01-01

119

Prevalence of spectacle wear among U.S. Army aviators.  

PubMed

The advanced avionic and electro-optical systems installed in Army rotary wing aircraft are becoming increasingly incompatible with spectacle wear. Therefore, the prevalence of spectacle wear among Army aviators is an important consideration in the development of future systems. A review of spectacle prevalence data from the Aviation Epidemiology Data Register (AEDR) for the years 1986, 1987, 1988, and 1989 was performed. Data were consistent across all 4 years, with mean prevalence of spectacle wear being 22% for active component forces. Reserve and National Guard components displayed mean spectacle wear prevalences of 27% and 32%, respectively. These prevalence rates are higher than those previously obtained in 1985 by a similar, but slightly different paradigm. Spectacle-wearing aviators exist in greater numbers than previously documented and represent a segment of the aviation population that will have increasing compatibility problems with advanced flight systems. Therefore, system planners will need to address these incompatibilities in future hardware developments. PMID:1923326

Schrimsher, R H; Lattimore, M R

1991-07-01

120

1990 Nationwide Truck Activity and Commodity Survey selected tabulations  

SciTech Connect

The Nationwide Truck Activity and Commodity Survey (NTACS) provides detailed activity data for a sample of trucks covered in the 1987 Truck Inventory and Use Survey (TIUS) for days selected at random over a 12-month period ending in 1990. The NTACS was conducted by the US Bureau of the Census for the US Department of Transportation (DOT). A Public Use File for the NTACS was developed by Oak Ridge National Laboratory (ORNL) under a reimbursable agreement with the DOT. The content of the Public Use File and the detailed design of the NTACS are described in the ORNL Report [open quotes]Technical Documentation for the 1990 Nationwide Truck Activity and Commodity Survey Public Use File[close quotes]. (1992). ORNL Technical Report No. TM-12188, Oak Ridge National Laboratory, Oak Ridge, TN 37831. The main purpose of this summary report is to provide selected tables based on the public use file.

Not Available

1993-06-01

121

A survey of active network research  

Microsoft Academic Search

Abstract Active networksare a novel approach to network,architecture in which the switches of the network,perform customized computations,on the,messages,flowing through them. This approach is motivated by both lead user applications, which perform user-driven computation at nodes within the network today, and the emergence of mobile code technologies that make dynamic network service innovation attainable. In this paper, we discuss two approaches

D. L. Tennenhouse; J. M. Smith; W. D. Sincoskie; D. J. Wetherall; G. J. Minden

1995-01-01

122

Aviation Education Multimedia Library  

NSDL National Science Digital Library

Purdue University is well-known for their various engineering programs, and they have also distinguished themselves through their work in aeronautical engineering research and practice. This website is designed to provide instructional materials for aviation educators, and one can imagine that such materials might work well in classroom slide presentations as well as for students who might be seeking a visual aid. The materials are basically organized in one long continuous list, and visitors can just scroll through them at their leisure. Among these materials, visitors will find photographs of landing gear equipment, squat switches, crush plates, and the tell-tale corroded electrical terminal. Finally, in their "General Materials" area, visitors can look over a presentation on turbocharger systems and consider a presentation on engine theory.

123

Safer Aviation Materials Tested  

NASA Technical Reports Server (NTRS)

A series of thermally stable polymer samples were tested. These materials are called low heat release materials and are designed for aircraft interior decorative materials. The materials are designed to give off a minimum amount of noxious gases when heated, which increases the possibility that people can escape from a burning aircraft. New cabin materials have suitably low heat release so that fire does not spread, toxic chemicals are not given off, and the fire-emergency escape time for crew and passengers is lengthened. These low heat-release materials have a variety of advantages and applications: interiors for ground-based facilities, interiors of space vehicles, and many commercial fire-protection environments. A microscale combustion calorimeter at the Federal Aviation Administration's (FAA) Technical Center tested NASA Langley Research Center materials samples. The calorimeter is shown. A sharp, quantitative, and reproducible heat-release-rate peak is obtained in the microscale heat-release-rate test. The newly tested NASA materials significantly reduced the heat release capacity and total heat release. The thermal stability and flammability behavior of the samples was very good. The new materials demonstrated a factor of 4 reduction in total heat release over ULTEM (a currently used material). This information is provided in the following barchart. In other tests, the materials showed greater than a factor 9 reduction in heat-release capacity over ULTEM. The newly tested materials were developed for low dielectric constant, low color, and good solubility. A scale up of the material samples is needed to determine the repeatability of the performance in larger samples. Larger panels composed of the best candidate materials will be tested in a larger scale FAA Technical Center fire facility. The NASA Glenn Research Center, Langley (Jeff Hinkley), and the FAA Technical Center (Richard Lyon) cooperatively tested these materials for the Accident Mitigation aspects of Fire Prevention under NASA's Aviation Safety Program.

Palaszewski, Bryan A.

2001-01-01

124

Ash cloud aviation advisories  

SciTech Connect

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.

Sullivan, T.J.; Ellis, J.S. [Lawrence Livermore National Lab., CA (United States); Schalk, W.W.; Nasstrom, J.S. [EG and G, Inc., Pleasanton, CA (United States)

1992-06-25

125

AWE: Aviation Weather Data Visualization  

NASA Technical Reports Server (NTRS)

The two official sources for aviation weather reports both require the pilot to mentally visualize the provided information. In contrast, our system, Aviation Weather Environment (AWE) presents aviation specific weather available to pilots in an easy to visualize form. We start with a computer-generated textual briefing for a specific area. We map this briefing onto a grid specific to the pilot's route that includes only information relevant to his flight route that includes only information relevant to his flight as defined by route, altitude, true airspeed, and proposed departure time. By modifying various parameters, the pilot can use AWE as a planning tool as well as a weather briefing tool.

Spirkovska, Lilly; Lodha, Suresh K.

2001-01-01

126

NASA aviation safety reporting system  

NASA Technical Reports Server (NTRS)

During the third quarter of operation of the Aviation Safety Reporting System (ASRS), 1429 reports concerning aviation safety were received from pilots, air traffic controllers, and others in the national aviation system. Details of the administration and results of the program are discussed. The design and construction of the ASRS data base are briefly presented. Altitude deviations and potential aircraft conflicts associated with misunderstood clearances were studied and the results are discussed. Summary data regarding alert bulletins, examples of alert bulletins and responses to them, and a sample of deidentified ASRS reports are provided.

1977-01-01

127

Activity and education of clinical dental technicians: a UK survey  

Microsoft Academic Search

Aims This survey aimed to determine the clinical activity of clinical dental technicians (CDTs) in the UK and to establish their employment status, views of statutory registration and need for further education. Until 2006, this practise was illegal in the UK.Materials and methods A postal questionnaire was sent to 128 members of the Clinical Dental Technicians' Association (CDTA) who had

R. J. Ibbetson; S. Turner; M. K. Ross

2007-01-01

128

Energy prices and aggregate economic activity: an interpretative survey  

Microsoft Academic Search

In this article, we survey the theory and evidence linking fluctuations in energy prices to those in aggregate economic activity. We then examine the implications of this research for both monetary policy and energy policy in response to oil price shocks. The currently available research seems to provide relatively reliable guidance for monetary policy. Because the precise channels through which

Stephen P. A. Brown; Mine K. Yücel

2002-01-01

129

Marketing Universities: A Survey of Student Recruitment Activities  

ERIC Educational Resources Information Center

Admissions officers of 350 private colleges and universities were surveyed to ascertain their understanding of the term "marketing," current use of promotional (advertising and personal selling) activities, market segmentation approaches, and their product (i.e., academic programs) development and differentiation strategies. The mail questionnaire…

Murphy, Patrick E.; McGarrity, Richard A.

1978-01-01

130

General Aviation Aircraft Reliability Study  

NASA Technical Reports Server (NTRS)

This reliability study was performed in order to provide the aviation community with an estimate of Complex General Aviation (GA) Aircraft System reliability. To successfully improve the safety and reliability for the next generation of GA aircraft, a study of current GA aircraft attributes was prudent. This was accomplished by benchmarking the reliability of operational Complex GA Aircraft Systems. Specifically, Complex GA Aircraft System reliability was estimated using data obtained from the logbooks of a random sample of the Complex GA Aircraft population.

Pettit, Duane; Turnbull, Andrew; Roelant, Henk A. (Technical Monitor)

2001-01-01

131

Nowcasting for Aviation in Africa  

NSDL National Science Digital Library

Nowcasting for Aviation in Africa summarizes techniques and best practices for developing area-specific forecasts at very short (0-6 hour) timescales. This 1-hour lesson presents a case study focused on interpreting threats and communicating correct warning information for a weather event affecting multiple airports in Gauteng Province, South Africa. In completing the lesson, the learner will assess the state of the atmosphere, develop a nowcast, monitor conditions, and update/create appropriate nowcast products for aviation stakeholders.

2014-09-14

132

75 FR 16912 - Proposed Information Collection (Dental Patient Satisfaction Survey) Activity: Comment Request  

Federal Register 2010, 2011, 2012, 2013, 2014

...Information Collection (Dental Patient Satisfaction Survey) Activity: Comment...information needed to measure patients' satisfaction with VA's dental services...Healthcare Experiences, Dental Patient Satisfaction Survey, VA Form...

2010-04-02

133

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

Federal Register 2010, 2011, 2012, 2013, 2014

...Transportation Security Administration Aviation Security Advisory Committee (ASAC...SUMMARY: The Aviation Security Advisory Committee (ASAC...Pub. L. 92-463). The Aviation Security Advisory Committee...

2013-04-05

134

NASA ASRS (Pub. 63) Aviation Safety Reporting System  

E-print Network

User Access Terminal Service FAA Federal Aviation Administration FAR Federal Aviation Regulation FAS National Business Aviation Association NOAA National Oceanic and Atmospheric Administration NORCAL Northern

135

July 1973 ground survey of active Central American volcanoes  

NASA Technical Reports Server (NTRS)

The author has identified the following significant results. Ground survey has shown that thermal anomalies of various sizes associated with volcanic activity at several Central American volcanoes should be detectable from Skylab. Anomalously hot areas of especially large size (greater than 500 m in diameter) are now found at Santiaguito and Pacaya volcanoes in Guatemala and San Cristobal in Nicaragua. Smaller anomalous areas are to be found at least seven other volcanoes. This report is completed after ground survey of eleven volcanoes and ground-based radiation thermometry mapping at these same points.

Stoiber, R. E. (principal investigator); Rose, W. I., Jr.

1973-01-01

136

NASA Aviation Safety Program Weather Accident Prevention/weather Information Communications (WINCOMM)  

NASA Technical Reports Server (NTRS)

Weather is a contributing factor in approximately 25-30 percent of general aviation accidents. The lack of timely, accurate and usable weather information to the general aviation pilot in the cockpit to enhance pilot situational awareness and improve pilot judgment remains a major impediment to improving aviation safety. NASA Glenn Research Center commissioned this 120 day weather datalink market survey to assess the technologies, infrastructure, products, and services of commercial avionics systems being marketed to the general aviation community to address these longstanding safety concerns. A market survey of companies providing or proposing to provide graphical weather information to the general aviation cockpit was conducted. Fifteen commercial companies were surveyed. These systems are characterized and evaluated in this report by availability, end-user pricing/cost, system constraints/limits and technical specifications. An analysis of market survey results and an evaluation of product offerings were made. In addition, recommendations to NASA for additional research and technology development investment have been made as a result of this survey to accelerate deployment of cockpit weather information systems for enhancing aviation safety.

Feinberg, Arthur; Tauss, James; Chomos, Gerald (Technical Monitor)

2002-01-01

137

[Aviation medicine laboratory of the North Fleet air base celebrates the 70th anniversary].  

PubMed

The article is dedicated to the history of formation and development of the oldest aviation medicine department and its role in a flight safety of the North Fleet naval aviation. The aviation medicine laboratory was created in the years of the Great Patriotic war for medical backup of flights, medical review board, delivering of combat casualty care, prophylaxis of hypothermia and exhaustion of flight and ground crew. In a post-war period the aviation medicine laboratory made a great contribution to development of medical backup of educational and combat activity of the North Fleet aviation. Participation in cosmonaut applicants selection (incl. Yu.A. Gagarin), optimization of flight services during the transmeridian flights, research of carrier-based aircraft habitability and body state of the contingent during the longstanding ship-based aviation, development of treatment methods for functional status of sea-based aviation crew are the achievements of aviation medicine laboratory. Nowadays medicine laboratory is performing a research and practice, methodic and consultative activity with the aim of improving the system of medical backup, aviation medicine, psychology, flight safety, improvement of air crew health, prolong of flying proficiency. PMID:24000629

Gavrilov, V V; Maza?kin, D N; Buldakov, I M; Pisarev, A A

2013-05-01

138

76 FR 28801 - Agency Information Collection Activities: Automated Commercial Environment Trade Survey  

Federal Register 2010, 2011, 2012, 2013, 2014

...Collection Activities: Automated Commercial Environment Trade Survey AGENCY: U.S. Customs...Reduction Act: Automated Commercial Environment Trade Survey. This document is published...information. Title: Automated Commercial Environment Trade Survey. OMB Number: Will...

2011-05-18

139

75 FR 32539 - Agency Information Collection (Dental Patient Satisfaction Survey) Activities Under OMB Review  

Federal Register 2010, 2011, 2012, 2013, 2014

...10-0503)] Agency Information Collection (Dental Patient Satisfaction Survey) Activities Under OMB Review AGENCY: Veterans...Title: Survey of Healthcare Experiences, Dental Patient Satisfaction Survey, VA Form 10-0503. OMB Control...

2010-06-08

140

78 FR 79079 - Agency Information Collection (Dental Patient Satisfaction Survey); Activities under OMB Review  

Federal Register 2010, 2011, 2012, 2013, 2014

...Information Collection (Dental Patient Satisfaction Survey); Activities under...No. 2900- 0764 (Dental Patient Satisfaction Survey)'' in any correspondence...No. 2900-0764 (Dental Patient Satisfaction Survey)'' in any...

2013-12-27

141

78 FR 8499 - Agency Information Collection Activities; Comment Request; Private School Universe Survey 2013-16  

Federal Register 2010, 2011, 2012, 2013, 2014

...Activities; Comment Request; Private School Universe Survey 2013-16 AGENCY: Department...Title of Collection: Private School Universe Survey 2013-16. OMB Control Number...410. Abstract: The Private School Universe Survey (PSS) is the NCES...

2013-02-06

142

76 FR 31357 - Agency Information Collection Activities: Comment Request for the Ferrous Metals Surveys  

Federal Register 2010, 2011, 2012, 2013, 2014

...Activities: Comment Request for the Ferrous Metals Surveys AGENCY: U.S. Geological Survey...paperwork requirements for the Ferrous Metals Surveys. This collection consists of...consumption data of 13 ores, concentrates, metals, and ferroalloys, some of which...

2011-05-31

143

77 FR 10544 - Agency Information Collection Activities: Comment Request for the Nonferrous Metals Surveys (30...  

Federal Register 2010, 2011, 2012, 2013, 2014

...Activities: Comment Request for the Nonferrous Metals Surveys (30 Forms) AGENCY: U.S...paperwork requirements for the Nonferrous Metals Surveys. This collection consists of...Various (30 forms). Title: Nonferrous Metals Surveys. Type of Request: Revision...

2012-02-22

144

Cyber threats within civil aviation  

NASA Astrophysics Data System (ADS)

Existing security policies in civil aviation do not adequately protect against evolving cyber threats. Cybersecurity has been recognized as a top priority among some aviation industry leaders. Heightened concerns regarding cyber threats and vulnerabilities surround components utilized in compliance with the Federal Aviation Administration's (FAA) Next Generation Air Transportation (NextGen) implementation. Automated Dependent Surveillance-B (ADS-B) and Electronic Flight Bags (EFB) have both been exploited through the research of experienced computer security professionals. Civil aviation is essential to international infrastructure and if its critical assets were compromised, it could pose a great risk to public safety and financial infrastructure. The purpose of this research was to raise awareness of aircraft system vulnerabilities in order to provoke change among current national and international cybersecurity policies, procedures and standards. Although the education of cyber threats is increasing in the aviation industry, there is not enough urgency when creating cybersecurity policies. This project intended to answer the following questions: What are the cyber threats to ADS-B of an aircraft in-flight? What are the cyber threats to EFB? What is the aviation industry's response to the issue of cybersecurity and in-flight safety? ADS-B remains unencrypted while the FAA's mandate to implement this system is rapidly approaching. The cyber threat of both portable and non-portable EFB's have received increased publicity, however, airlines are not responding quick enough (if at all) to create policies for the use of these devices. Collectively, the aviation industry is not being proactive enough to protect its aircraft or airport network systems. That is not to say there are not leaders in cybersecurity advancement. These proactive organizations must set the standard for the future to better protect society and it's most reliable form of transportation.

Heitner, Kerri A.

145

National Survey of Children's Hospitals on Legacy-Making Activities  

PubMed Central

Abstract Objective Many hospitals offer legacy-building activities for children with serious illnesses or their family members, yet legacy-making has received little empirical attention. This descriptive cross-sectional study examined healthcare provider perceptions of legacy-making activities (e.g., memory books) currently offered by hospitals to pediatric patients and their families. Methods Healthcare providers in seventy-seven (100%) teaching children's hospitals across the United States completed an electronic survey. Results Nearly all providers surveyed reported offering legacy-making activities to ill children and their families, with patients and families usually completing the activity together. Most activities were offered before a patient died and when cure is no longer being sought. Perceived outcomes included benefit to bereaved families and a tangible memento of their deceased child. Conclusion Legacy-making may enhance life and decrease suffering for dying children and their families. Healthcare professionals can facilitate opportunities for children and their families to build legacies. Additional research is needed to examine activities across different age groups and conditions, the best time to offer such activities, and associations with positive and negative outcomes for ill children, their family members, and the bereaved. PMID:22577785

Dietrich, Mary S.; Friedman, Debra L.; Gordon, Jessie E.; Gilmer, Mary J.

2012-01-01

146

NATIONAL HUMAN ACTIVITY PATTERN SURVEY (NHAPS): USE OF NATIONWIDE ACTIVITY DATA FOR HUMAN EXPOSURE ASSESSMENT  

EPA Science Inventory

The National Human Activity Pattern Survey (NHAPS) was initiated to fill a need for updated activity information on a nationwide scale. Several recent exposure field monitoring studies have shown that human activities play a critical role in explaining the variation in human expo...

147

Status report on the survey and alignment activities at Fermilab  

SciTech Connect

The surveying and alignment activities at Fermilab are the responsibility of the Alignment and Metrology Group. The Group supports and interacts with physicists and engineers working on any particular project, from the facility construction phase to the installation and final alignment of components in the beam line. One of the goals of the Alignment and Metrology Group is to upgrade the old survey networks in the tunnel using modern surveying technology, such as the Laser Tracker for tunnel networks and GPS for the surface networks. According to the job needs, all surveys are done with Laser Trackers and/or Videogrammetry (V-STARS) systems for spatial coordinates; optical and electronic levels are used for elevations, Gyro-Theodolite for azimuths, Mekometer for distances and GPS for baseline vectors. The group has recently purchased two new API Laser Trackers, one INCA3 camera for the V-Stars, and one DNA03 digital level. This report presents the projects and major activities of the Alignment and Metrology Group at Fermilab during the period of 2000 to 2004. It focuses on the most important current projects, especially those that have to be completed during the currently scheduled three-month shutdown period. Future projects, in addition to the status of the current projects, are also presented.

Oshinowo, Babatunde O'Sheg; /Fermilab

2004-10-01

148

Active Progress Bars: Facilitating the Switch to Temporary Activities  

E-print Network

participatory design, and a follow-up survey of 96 respondents. Finally we describe an early prototype of active progress bars, and report on initial use. Author Keywords Progress bars, participatory design, frustration-1-4503-0268-5/11/05. Christophe Hurter Civil Aviation Research Center, IRIT Toulouse University 7 Avenue Edouard Belin 31055

Paris-Sud XI, Université de

149

Russian eruption warning systems for aviation  

USGS Publications Warehouse

More than 65 potentially active volcanoes on the Kamchatka Peninsula and the Kurile Islands pose a substantial threat to aircraft on the Northern Pacific (NOPAC), Russian Trans-East (RTE), and Pacific Organized Track System (PACOTS) air routes. The Kamchatka Volcanic Eruption Response Team (KVERT) monitors and reports on volcanic hazards to aviation for Kamchatka and the north Kuriles. KVERT scientists utilize real-time seismic data, daily satellite views of the region, real-time video, and pilot and field reports of activity to track and alert the aviation industry of hazardous activity. Most Kurile Island volcanoes are monitored by the Sakhalin Volcanic Eruption Response Team (SVERT) based in Yuzhno-Sakhalinsk. SVERT uses daily moderate resolution imaging spectroradiometer (MODIS) satellite images to look for volcanic activity along this 1,250-km chain of islands. Neither operation is staffed 24 h per day. In addition, the vast majority of Russian volcanoes are not monitored seismically in real-time. Other challenges include multiple time-zones and language differences that hamper communication among volcanologists and meteorologists in the US, Japan, and Russia who share the responsibility to issue official warnings. Rapid, consistent verification of explosive eruptions and determination of cloud heights remain significant technical challenges. Despite these difficulties, in more than a decade of frequent eruptive activity in Kamchatka and the northern Kuriles, no damaging encounters with volcanic ash from Russian eruptions have been recorded. ?? Springer Science+Business Media B.V. 2009.

Neal, C.; Girina, O.; Senyukov, S.; Rybin, A.; Osiensky, J.; Izbekov, P.; Ferguson, G.

2009-01-01

150

Kamchatkan Volcanic Eruption Response Team (KVERT), Russia: preventing the danger of volcanic eruptions to aviation.  

NASA Astrophysics Data System (ADS)

The Kamchatkan Volcanic Eruption Response Team (KVERT) has been a collaborative project of scientists from the Institute of Volcanology and Seismology, the Kamchatka Branch of Geophysical Surveys, and the Alaska Volcano Observatory (IVS, KB GS and AVO). The purpose of KVERT is to reduce the risk of costly, damaging, and possibly deadly encounters of aircraft with volcanic ash clouds. To reduce this risk, KVERT collects all possible volcanic information and issues eruption alerts to aviation and other emergency officials. KVERT was founded by Institute of Volcanic Geology and Geochemistry FED RAS in 1993 (in 2004, IVGG merged with the Institute of Volcanology to become IVS). KVERT analyzes volcano monitoring data (seismic, satellite, visual and video, and pilot reports), assigns the Aviation Color Code, and issues reports on eruptive activity and unrest at Kamchatkan (since 1993) and Northern Kurile (since 2003) volcanoes. KVERT receives seismic monitoring data from KB GS (the Laboratory for Seismic and Volcanic Activity). KB GS maintains telemetered seismic stations to investigate 11 of the most active volcanoes in Kamchatka. Data are received around the clock and analysts evaluate data each day for every monitored volcano. Satellite data are provided from several sources to KVERT. AVO conducts satellite analysis of the Kuriles, Kamchatka, and Alaska as part of it daily monitoring and sends the interpretation to KVERT staff. KVERT interprets MODIS and MTSAT images and processes AVHRR data to look for evidence of volcanic ash and thermal anomalies. KVERT obtains visual volcanic information from volcanologist's field trips, web-cameras that monitor Klyuchevskoy (established in 2000), Sheveluch (2002), Bezymianny (2003), Koryaksky (2009), Avachinsky (2009), Kizimen (2011), and Gorely (2011) volcanoes, and pilots. KVERT staff work closely with staff of AVO, AMC (Airport Meteorological Center) at Yelizovo Airport and the Tokyo Volcanic Ash Advisory Center (VAAC), the Anchorage VAAC, the Washington VAAC, the Montreal VAAC, and the Darwin VAAC to release timely eruption warnings. Urgent information is sent by email to government agencies, aviation services, and scientists (>300 users) located throughout the North Pacific region. KVERT staff also notify AMC and other emergency agencies in Kamchatka by telephone. VONA/KVERT Information Releases (VONA - Volcano Observatory Notice for Aviation) are formal written notifications that are sent by email to these same users to announce Aviation Color Code changes and significant changes in activity. These statements are posted on the KVERT (http://www.kscnet.ru/ivs/kvert/) and the AVO (http://www.avo.alaska.edu) web site. During the period of 2009-2011, eruptions of 6 of Kamchatkan volcanoes were potentially dangerous for aviation: three significant events occurred at Bezymianny (2009, 2010 and 2011), one protracted eruption at Klyuchevskoy (from 2009 till 2010), three short events at Koryaksky (2009) and an ongoing explosive-effusive eruption at Kizimen (2010-2012). Eruptions of Karymsky and Sheveluch volcanoes have continued essentially uninterrupted throughout the period 2009-2011 and have also posed a hazard to aviation intermittently. Very strong explosive eruption of Sheveluch occurred on October 27-28, 2010.

Girina, O.; Neal, Ch.

2012-04-01

151

An Operations Research approach to aviation security  

E-print Network

Since the terrorist attacks of September 11, 2001, aviation security policy has remained a focus of national attention. We develop mathematical models to address some prominent problems in aviation security. We explore ...

Martonosi, Susan Elizabeth

2005-01-01

152

Survey of Active Vibration Isolation Systems for Microgravity Applications  

NASA Technical Reports Server (NTRS)

In view of the utility of space vehicles as orbiting science laboratories, the need for vibration isolation systems for acceleration-sensitive experiments has gained increasing visibility. To date, three active microgravity vibration isolation systems have successfully been demonstrated in flight. A tutorial discussion of the microgravity vibration isolation problem, including a description of the acceleration environment of the International Space Station and attenuation requirements, as well as a comparison or the dynamics of passive isolation, active rack-level isolation, and active payload-level isolation is provided. The flight test results of the three demonstrated systems: suppression of transient accelerations by levitation, the microgravity vibration isolation mount, and the active rack isolation system are surveyed.

Grodsinsky, Carlos M.; Whorton, Mark S.

2000-01-01

153

A Survey of Active Vibration Isolation Systems for Microgravity Applications  

NASA Technical Reports Server (NTRS)

In view of the utility of space vehicles as orbiting science laboratories, the need for vibration isolation systems for acceleration sensitive experiments has gained increasing visibility. To date, three active microgravity vibration isolation systems have successfully been demonstrated in flight. This paper provides a tutorial discussion of the microgravity vibration isolation problem including a description of the acceleration environment of the International Space Station and attenuation requirements as well as a comparison of the dynamics of passive isolation, active rack-level isolation, and active payload-level isolation. This paper also surveys the flight test results of the three demonstrated systems: Suppression of Transient Accelerations By Levitation (STABLE); the Microgravity Vibration Isolation Mount (MIM); and the Active Rack Isolation System (ARIS).

Grodsinsky, Carlos M.; Whorton, Mark S.

2000-01-01

154

Distributed Aviation Concepts and Technologies  

NASA Technical Reports Server (NTRS)

Aviation has experienced one hundred years of evolution, resulting in the current air transportation system dominated by commercial airliners in a hub and spoke infrastructure. While the first fifty years involved disruptive technologies that required frequent vehicle adaptation, the second fifty years produced a stable evolutionary optimization of decreasing costs with increasing safety. This optimization has resulted in traits favoring a centralized service model with high vehicle productivity and cost efficiency. However, it may also have resulted in a system that is not sufficiently robust to withstand significant system disturbances. Aviation is currently facing rapid change from issues such as environmental damage, terrorism threat, congestion and capacity limitations, and cost of energy. Currently, these issues are leading to a loss of service for weaker spoke markets. These catalysts and a lack of robustness could result in a loss of service for much larger portions of the aviation market. The impact of other competing transportation services may be equally important as casual factors of change. Highway system forecasts indicate a dramatic slow down as congestion reaches a point of non-linearly increasing delay. In the next twenty-five years, there is the potential for aviation to transform itself into a more robust, scalable, adaptive, secure, safe, affordable, convenient, efficient and environmentally friendly system. To achieve these characteristics, the new system will likely be based on a distributed model that enables more direct services. Short range travel is already demonstrating itself to be inefficient with a centralized model, providing opportunities for emergent distributed services through air-taxi models. Technologies from the on-demand revolution in computers and communications are now available as major drivers for aviation on-demand adaptation. Other technologies such as electric propulsion are currently transforming the automobile industry, and will also significantly alter the functionality of future distributed aviation concepts. Many hurdles exist, including technology, regulation, and perception. Aviation has an inherent governmental role not present in other recent on-demand transformations, which may pose a risk of curtailing aviation democratization .

Moore, Mark D.

2008-01-01

155

Civil Aviation and Facilities. Aerospace Education II.  

ERIC Educational Resources Information Center

This is a revised textbook for use in the Air Force ROTC training program. The main theme of the book is concerned with the kinds of civil aviation facilities and many intricacies involved in their use. The first chapter traces the development of civil aviation and the formation of organizations to control aviation systems. The second chapter…

Callaway, R. O.; Elmer, James D.

156

Aviation Safety Program Aircraft Aging & Durability Project  

E-print Network

Aviation Safety Program Aircraft Aging & Durability Project Technical Plan Summary Principal by NASA to define the rationale, scope and detailed content of a comprehensive Aviation Safety, Aircraft Aircraft Aging & Durability Project ADP Advanced Digital Processing AvSP Aviation Safety Program CDM

157

Aviation Insights: Unmanned Aerial Vehicles  

ERIC Educational Resources Information Center

Aviation as people know it today is a mature but very young technology as time goes. Considering that the 100th anniversary of flight was celebrated just a few years ago in 2003, millions of people fly from city to city or from nation to nation and across the oceans and around the world effortlessly and economically. Additionally, they have space…

Deal, Walter F., III

2005-01-01

158

Alternative Fuel Options in Aviation  

Microsoft Academic Search

Aviation has come a long way over the past century, but the largest challenge may still lie ahead. The planet is running out of the one thing an airplane needs to stay in flight: fuel. Fossil fuels are the only resource being used to power aircraft at a higher level than a testing phase. With scholars, scientists, geologists, and politicians

Nathan DeLisle

2006-01-01

159

International standardization compliance in aviation  

NASA Astrophysics Data System (ADS)

The commercial aviation industry is global in the sense that passengers travel around the world from destination to destination. It is also global in that the states of the world (countries) regulate the industry domestically and internationally. There is a unique stage where the world comes together to promote aviation, discuss ideas and establish international standards. This stage is the International Civil Aviation Organization (ICAO). The 191 current member states signed treaties acknowledging their commitment to abiding by the standards and practices established by ICAO. No state is 100 percent compliant with international standards, however, and the purpose of this paper is to explore the relationship between the fulfillment of compliance by individual member states and the safety of the commercial aviation industry in terms of fatality rates. Analysis of the results suggested that there is a relationship between compliance and fatalities, as compliance percentage increases the fatality rate decreases. Further analysis indicated the results were statistically significant regardless of the wealth of a state or size of a state's commercial operation.

Spence, Tyler B.

160

NASA aviation safety reporting system  

NASA Technical Reports Server (NTRS)

The human factors frequency considered a cause of or contributor to hazardous events onboard air carriers are examined with emphasis on distractions. Safety reports that have been analyzed, processed, and entered into the aviation safety reporting system data base are discussed. A sampling of alert bulletins and responses to them is also presented.

1979-01-01

161

NASA's Aviation Safety and Modeling Project  

NASA Technical Reports Server (NTRS)

The Aviation Safety Monitoring and Modeling (ASMM) Project of NASA's Aviation Safety program is cultivating sources of data and developing automated computer hardware and software to facilitate efficient, comprehensive, and accurate analyses of the data collected from large, heterogeneous databases throughout the national aviation system. The ASMM addresses the need to provide means for increasing safety by enabling the identification and correcting of predisposing conditions that could lead to accidents or to incidents that pose aviation risks. A major component of the ASMM Project is the Aviation Performance Measuring System (APMS), which is developing the next generation of software tools for analyzing and interpreting flight data.

Chidester, Thomas R.; Statler, Irving C.

2006-01-01

162

Combining users' activity survey and simulators to evaluate human activity recognition systems.  

PubMed

Evaluating human activity recognition systems usually implies following expensive and time-consuming methodologies, where experiments with humans are run with the consequent ethical and legal issues. We propose a novel evaluation methodology to overcome the enumerated problems, which is based on surveys for users and a synthetic dataset generator tool. Surveys allow capturing how different users perform activities of daily living, while the synthetic dataset generator is used to create properly labelled activity datasets modelled with the information extracted from surveys. Important aspects, such as sensor noise, varying time lapses and user erratic behaviour, can also be simulated using the tool. The proposed methodology is shown to have very important advantages that allow researchers to carry out their work more efficiently. To evaluate the approach, a synthetic dataset generated following the proposed methodology is compared to a real dataset computing the similarity between sensor occurrence frequencies. It is concluded that the similarity between both datasets is more than significant. PMID:25856329

Azkune, Gorka; Almeida, Aitor; López-de-Ipiña, Diego; Chen, Liming

2015-01-01

163

The NASA Aviation Safety Program: Overview  

NASA Technical Reports Server (NTRS)

In 1997, the United States set a national goal to reduce the fatal accident rate for aviation by 80% within ten years based on the recommendations by the Presidential Commission on Aviation Safety and Security. Achieving this goal will require the combined efforts of government, industry, and academia in the areas of technology research and development, implementation, and operations. To respond to the national goal, the National Aeronautics and Space Administration (NASA) has developed a program that will focus resources over a five year period on performing research and developing technologies that will enable improvements in many areas of aviation safety. The NASA Aviation Safety Program (AvSP) is organized into six research areas: Aviation System Modeling and Monitoring, System Wide Accident Prevention, Single Aircraft Accident Prevention, Weather Accident Prevention, Accident Mitigation, and Synthetic Vision. Specific project areas include Turbulence Detection and Mitigation, Aviation Weather Information, Weather Information Communications, Propulsion Systems Health Management, Control Upset Management, Human Error Modeling, Maintenance Human Factors, Fire Prevention, and Synthetic Vision Systems for Commercial, Business, and General Aviation aircraft. Research will be performed at all four NASA aeronautics centers and will be closely coordinated with Federal Aviation Administration (FAA) and other government agencies, industry, academia, as well as the aviation user community. This paper provides an overview of the NASA Aviation Safety Program goals, structure, and integration with the rest of the aviation community.

Shin, Jaiwon

2000-01-01

164

First Results of the TIGRE Chromospheric Activity Survey  

NASA Astrophysics Data System (ADS)

We present the first results of the stellar activity survey with TIGRE (Telescopio Internacional de Guanajuato, Robótico-Espectroscópico). This long term program was started in August 2013 with the monitoring of a larger number of stars. We aim at measuring the short- and long-term variability of stellar activity for stars of different spectral types and luminosity classes, using indicators of different spectral lines (mainly Ca II S-Index, Ca II IR triplet, H_? and sodium D). A transformation equation of the TIGRE S-Index into the Mount Wilson S-index was derived in order to compare our results to the vast body of existing S-index measurements. Furthermore, the correlation between the S-index and the lines of the Ca II IR triplet has been studied, based on strictly simultaneous observations.

Mittag, M.; Hempelmann, A.; Gonzalez-Perez, J. N.; Schmitt, J. H. M. M.

2015-01-01

165

Fog: Its Processes and Impacts to Aviation and Aviation Forecasting  

NSDL National Science Digital Library

This module first introduces forecasters to aviation-forecast customers and their needs, and discusses how fog impacts aviation operations. The main content of the module then explains the physical processes and life cycle of radiation and advection fog, including their preconditioning environment, initiation, growth, and dissipation. The processes covered in the module include radiation (both solar and longwave), soil-atmosphere thermal interactions, turbulent mixing, the roles of condensation nuclei, and droplet settling. Each section of the module includes a set of interactive questions based on the information presented. The module concludes with a discussion of the physical processes and life-cycles of terrain-induced and pre- and post- frontal fog.

2014-09-14

166

Compton thick active galactic nuclei in Chandra surveys  

NASA Astrophysics Data System (ADS)

We present the results from an X-ray spectral analysis of active galactic nuclei (AGN) in the Chandra Deep Field-South, All-wavelength Extended Groth-strip International Survey (AEGIS)-Deep X-ray survey (XD) and Chandra-Cosmic Evolution Surveys (COSMOS), focusing on the identification and characterization of the most heavily obscured, Compton thick (CT, NH > 1024 cm-2) sources. Our sample is comprised of 3184 X-ray selected extragalactic sources, which has a high rate of redshift completeness (96.6 per cent), and includes additional spectroscopic redshifts and improved photometric redshifts over previous studies. We use spectral models designed for heavily obscured AGN which self-consistently include all major spectral signatures of heavy absorption. We validate our spectral fitting method through simulations, identify CT sources not selected through this method using X-ray colours and take considerations for the constraints on NH given the low count nature of many of our sources. After these considerations, we identify a total of 100 CT AGN with best-fitting NH > 1024 cm-2 and NH constrained to be above 1023.5 cm-2 at 90 per cent confidence. These sources cover an intrinsic 2-10 keV X-ray luminosity range of 1042-3 × 1045 erg s-1 and a redshift range of z = 0.1-4. This sample will enable characterization of these heavily obscured AGN across cosmic time and to ascertain their cosmological significance. These survey fields are sites of extensive multiwavelength coverage, including near-infrared Cosmic Assembly Near-infrared Deep Extragalactic Legacy Survey (CANDELS) data and far-infrared Herschel data, enabling forthcoming investigations into the host properties of CT AGN. Furthermore, by using the torus models to test different covering factor scenarios, and by investigating the inclusion of the soft scattered emission, we find evidence that the covering factor of the obscuring material decreases with LX for all redshifts, consistent with the receding torus model, and that this factor increases with redshift, consistent with an increase in the obscured fraction towards higher redshifts. The strong relationship between the parameters of obscuration and LX points towards an origin intrinsic to the AGN; however, the increase of the covering factor with redshift may point towards contributions to the obscuration by the host galaxy. We make NH, ? (with uncertainties), observed X-ray fluxes and intrinsic 2-10 keV luminosities for all sources analysed in this work publicly available in an online catalogue.

Brightman, Murray; Nandra, Kirpal; Salvato, Mara; Hsu, Li-Ting; Aird, James; Rangel, Cyprian

2014-09-01

167

Compressing Aviation Data in XML Format  

NASA Technical Reports Server (NTRS)

Design, operations and maintenance activities in aviation involve analysis of variety of aviation data. This data is typically in disparate formats making it difficult to use with different software packages. Use of a self-describing and extensible standard called XML provides a solution to this interoperability problem. XML provides a standardized language for describing the contents of an information stream, performing the same kind of definitional role for Web content as a database schema performs for relational databases. XML data can be easily customized for display using Extensible Style Sheets (XSL). While self-describing nature of XML makes it easy to reuse, it also increases the size of data significantly. Therefore, transfemng a dataset in XML form can decrease throughput and increase data transfer time significantly. It also increases storage requirements significantly. A natural solution to the problem is to compress the data using suitable algorithm and transfer it in the compressed form. We found that XML-specific compressors such as Xmill and XMLPPM generally outperform traditional compressors. However, optimal use of Xmill requires of discovery of optimal options to use while running Xmill. This, in turn, depends on the nature of data used. Manual disc0ver.y of optimal setting can require an engineer to experiment for weeks. We have devised an XML compression advisory tool that can analyze sample data files and recommend what compression tool would work the best for this data and what are the optimal settings to be used with a XML compression tool.

Patel, Hemil; Lau, Derek; Kulkarni, Deepak

2003-01-01

168

Satellite Delivery of Aviation Weather Data  

NASA Technical Reports Server (NTRS)

With aviation traffic continuing to increase worldwide, reducing the aviation accident rate and aviation schedule delays is of critical importance. In the United States, the National Aeronautics and Space Administration (NASA) has established the Aviation Safety Program and the Aviation System Capacity Program to develop and test new technologies to increase aviation safety and system capacity. Weather is a significant contributor to aviation accidents and schedule delays. The timely dissemination of weather information to decision makers in the aviation system, particularly to pilots, is essential in reducing system delays and weather related aviation accidents. The NASA Glenn Research Center is investigating improved methods of weather information dissemination through satellite broadcasting directly to aircraft. This paper describes an on-going cooperative research program with NASA, Rockwell Collins, WorldSpace, Jeppesen and American Airlines to evaluate the use of satellite digital audio radio service (SDARS) for low cost broadcast of aviation weather information, called Satellite Weather Information Service (SWIS). The description and results of the completed SWIS Phase 1 are presented, and the description of the on-going SWIS Phase 2 is given.

Kerczewski, Robert J.; Haendel, Richard

2001-01-01

169

7 CFR 612.2 - Snow survey and water supply forecast activities.  

Code of Federal Regulations, 2013 CFR

...2013-01-01 false Snow survey and water supply forecast activities. ...Continued) NATURAL RESOURCES CONSERVATION SERVICE, DEPARTMENT OF AGRICULTURE CONSERVATION OPERATIONS SNOW SURVEYS AND WATER SUPPLY FORECASTS § 612.2...

2013-01-01

170

7 CFR 612.2 - Snow survey and water supply forecast activities.  

Code of Federal Regulations, 2011 CFR

...2011-01-01 false Snow survey and water supply forecast activities. ...Continued) NATURAL RESOURCES CONSERVATION SERVICE, DEPARTMENT OF AGRICULTURE CONSERVATION OPERATIONS SNOW SURVEYS AND WATER SUPPLY FORECASTS § 612.2...

2011-01-01

171

7 CFR 612.2 - Snow survey and water supply forecast activities.  

Code of Federal Regulations, 2012 CFR

...2012-01-01 false Snow survey and water supply forecast activities. ...Continued) NATURAL RESOURCES CONSERVATION SERVICE, DEPARTMENT OF AGRICULTURE CONSERVATION OPERATIONS SNOW SURVEYS AND WATER SUPPLY FORECASTS § 612.2...

2012-01-01

172

7 CFR 612.2 - Snow survey and water supply forecast activities.  

Code of Federal Regulations, 2010 CFR

...2010-01-01 false Snow survey and water supply forecast activities. ...Continued) NATURAL RESOURCES CONSERVATION SERVICE, DEPARTMENT OF AGRICULTURE CONSERVATION OPERATIONS SNOW SURVEYS AND WATER SUPPLY FORECASTS § 612.2...

2010-01-01

173

7 CFR 612.2 - Snow survey and water supply forecast activities.  

Code of Federal Regulations, 2014 CFR

...2014-01-01 false Snow survey and water supply forecast activities. ...Continued) NATURAL RESOURCES CONSERVATION SERVICE, DEPARTMENT OF AGRICULTURE CONSERVATION OPERATIONS SNOW SURVEYS AND WATER SUPPLY FORECASTS § 612.2...

2014-01-01

174

77 FR 64382 - Agency Information Collection (Nation-Wide Customer Satisfaction Surveys) Activities Under OMB...  

Federal Register 2010, 2011, 2012, 2013, 2014

...Agency Information Collection (Nation-Wide Customer Satisfaction Surveys) Activities Under OMB Review AGENCY...SUPPLEMENTARY INFORMATION: Title: Nation-wide Customer Satisfaction Surveys, VA Forms 10-1465- 2 through...

2012-10-19

175

78 FR 38809 - Agency Information Collection (NCA Customer Satisfaction Surveys (Headstone/Marker)) Activity...  

Federal Register 2010, 2011, 2012, 2013, 2014

...2900-0571] Agency Information Collection (NCA Customer Satisfaction Surveys (Headstone/Marker)) Activity Under...INFORMATION: Title: Generic Clearance for NCA, and IG Customer Satisfaction Surveys. OMB Control Number: 2900-0571....

2013-06-27

176

75 FR 9277 - Proposed Information Collection (Nation-Wide Customer Satisfaction Surveys) Activity: Comment...  

Federal Register 2010, 2011, 2012, 2013, 2014

...Proposed Information Collection (Nation-Wide Customer Satisfaction Surveys) Activity: Comment Request AGENCY...information technology. Title: Nation-wide Customer Satisfaction Surveys, VA Forms 1465-2 through...

2010-03-01

177

77 FR 2349 - Proposed Information Collection (Nation-wide Customer Satisfaction Surveys) Activity: Comment...  

Federal Register 2010, 2011, 2012, 2013, 2014

...Proposed Information Collection (Nation-wide Customer Satisfaction Surveys) Activity: Comment Request AGENCY...information technology. Title: Nation-wide Customer Satisfaction Surveys, VA Forms 10-1465- 2 through...

2012-01-17

178

75 FR 25320 - Agency Information Collection (Nation-wide Customer Satisfaction Surveys) Activities Under OMB...  

Federal Register 2010, 2011, 2012, 2013, 2014

...Agency Information Collection (Nation-wide Customer Satisfaction Surveys) Activities Under OMB Review AGENCY...SUPPLEMENTARY INFORMATION: Title: Nation-wide Customer Satisfaction Surveys, VA Forms 1465-2 through...

2010-05-07

179

75 FR 1119 - Agency Information Collection (Supplier Perception Survey) Activity Under OMB Review  

Federal Register 2010, 2011, 2012, 2013, 2014

...2900-New (Supplier)] Agency Information Collection (Supplier Perception Survey) Activity Under OMB Review AGENCY: Office of Acquisition...INFORMATION: Title: Department of Veterans Affairs Supplier Perception Survey. OMB Control Number: 2900-New (Supplier)....

2010-01-08

180

78 FR 11965 - Agency Information Collection (Learner's Perception (LP) Survey) Activities Under OMB Review  

Federal Register 2010, 2011, 2012, 2013, 2014

...Information Collection (Learner's Perception (LP) Survey) Activities Under OMB...SUPPLEMENTARY INFORMATION: Title: Learner's Perception (LP) Survey, VA Form 10-0439...be use to obtain health care trainees perception of their clinical experience with...

2013-02-20

181

76 FR 70827 - Proposed Information Collection (Supplier Perception Survey) Activity; Comment Request  

Federal Register 2010, 2011, 2012, 2013, 2014

...2900-0751] Proposed Information Collection (Supplier Perception Survey) Activity; Comment Request AGENCY: Office of Acquisition...technology. Title: Department of Veterans Affairs Supplier Perception Survey. OMB Control Number: 2900-0751. Type of...

2011-11-15

182

77 FR 7244 - Agency Information Collection (Supplier Perception Survey) Activity Under OMB Review  

Federal Register 2010, 2011, 2012, 2013, 2014

...No. 2900-0751] Agency Information Collection (Supplier Perception Survey) Activity Under OMB Review AGENCY: Office of Acquisition...INFORMATION: Title: Department of Veterans Affairs Supplier Perception Survey. OMB Control Number: 2900-2900-0751. Type...

2012-02-10

183

76 FR 56504 - Proposed Information Collection (Spinal Cord Injury Patient Care Survey) Activity: Comment Request  

Federal Register 2010, 2011, 2012, 2013, 2014

...Proposed Information Collection (Spinal Cord Injury Patient Care Survey) Activity...information technology. Title: Spinal Cord Injury Patient Care Survey, VA Form...10-0515 will be used to determine spinal cord patients' satisfaction...

2011-09-13

184

A Survey of Health-Related Activities on Second Life  

PubMed Central

Background Increasingly, governments, health care agencies, companies, and private groups have chosen Second Life as part of their Web 2.0 communication strategies. Second Life offers unique design features for disseminating health information, training health professionals, and enabling patient education for both academic and commercial health behavior research. Objectives This study aimed to survey and categorize the range of health-related activities on Second Life; to examine the design attributes of the most innovative and popular sites; and to assess the potential utility of Second Life for the dissemination of health information and for health behavior change. Methods We used three separate search strategies to identify health-related sites on Second Life. The first used the application’s search engine, entering both generic and select illness-specific keywords, to seek out sites. The second identified sites through a comprehensive review of print, blog, and media sources discussing health activities on Second Life. We then visited each site and used a snowball method to identify other health sites until we reached saturation (no new health sites were identified). The content, user experience, and chief purpose of each site were tabulated as well as basic site information, including user traffic data and site size. Results We found a wide range of health-related activities on Second Life, and a diverse group of users, including organizations, groups, and individuals. For many users, Second Life activities are a part of their Web 2.0 communication strategy. The most common type of health-related site in our sample (n = 68) were those whose principle aim was patient education or to increase awareness about health issues. The second most common type of site were support sites, followed by training sites, and marketing sites. Finally, a few sites were purpose-built to conduct research in SL or to recruit participants for real-life research. Conclusions Studies show that behaviors from virtual worlds can translate to the real world. Our survey suggests that users are engaged in a range of health-related activities in Second Life which are potentially impacting real-life behaviors. Further research evaluating the impact of health-related activities on Second Life is warranted. PMID:19632971

Beard, Leslie; Wilson, Kumanan; Morra, Dante

2009-01-01

185

General aviation fuel quality control  

NASA Technical Reports Server (NTRS)

Quality control measures for aviation gasoline, and some of the differences between quality control on avgas and mogas are discussed. One thing to keep in mind is that with motor gasoline you can always pull off to the side of the road. It's not so easy to do in an airplane. Consequently, there are reasons for having the tight specifications and the tight quality control measures on avgas as compared to motor gasoline.

Poitz, H.

1983-01-01

186

Supermassive black hole activity in the Cosmic Evolution Survey  

NASA Astrophysics Data System (ADS)

I investigate active supermassive black holes, also called active galactic nuclei (AGNs). My tool for this work is the Cosmic Evolution Survey (COSMOS), a deep multiwavelength survey over 2 deg2 of the sky. I describe the COSMOS AGN optical spectroscopy campaign, and present the largest AGN sample to date with full multiwavelength (radio, IR, optical, UV and X-ray) spectral energy distributions. Studying the COSMOS AGN sample reveals a unified model for supermassive black hole activity based on accretion rate, as shown by the following main results. (1) Classically "obscured" (Type 2) AGNs are more prevalent at higher redshifts and lower luminosities, suggesting that these objects accrete through low-level stochastic disk feeding by their hosts. (2) The presence of broad emission lines in an AGN requires a minimum accretion rate (L/LEdd > 0.01). Broad-line (Type 1) AGNs in COSMOS span a large range of accretion rates (0.01 < L/LEdd < 1), in contrast to results from previous, shallower surveys, and broad-line AGNs become more optically luminous as accretion rate increases. (3) Lineless, "optically dull" AGNs have very different SEDs than broad-line and narrow-line AGNs, with comparatively brighter X-ray emission, redder optical continua, no infrared hot dust, and stronger radio emission. While up to 2/3 of optically dull AGNs may be "normal" AGNs diluted by extranuclear host galaxy light, at least 1/3 are best described as unobscured, intrinsically weak AGNs. (4) At low accretion rates, material accreting onto an AGN changes from a thin disk to an advection-dominated flow near the black hole, resulting in very different observed properties: the broad-line region disappears, radio jets become more important, and the hot dust signature changes. In contrast to previous unification models, observations indicate that most of the narrow-line and lineless AGNs in COSMOS are best described as weakly accreting AGNs. We conclude by noting a few predictions and observational tests to further investigate our model of AGN unification by accretion rate.

Trump, Jonathan Russell

187

Taxation of United States general aviation  

NASA Astrophysics Data System (ADS)

General aviation in the United States has been an important part of the economy and American life. General aviation is defined as all flying excluding military and scheduled airline operations, and is utilized in many areas of our society. The majority of aircraft operations and airports in the United States are categorized as general aviation, and general aviation contributes more than one percent to the United States gross domestic product each year. Despite the many benefits of general aviation, the lead emissions from aviation gasoline consumption are of great concern. General aviation emits over half the lead emissions in the United States or over 630 tons in 2005. The other significant negative externality attributed to general aviation usage is aircraft accidents. General aviation accidents have caused over 8000 fatalities over the period 1994-2006. A recent Federal Aviation Administration proposed increase in the aviation gasoline tax from 19.4 to 70.1 cents per gallon has renewed interest in better understanding the implications of such a tax increase as well as the possible optimal rate of taxation. Few studies have examined aviation fuel elasticities and all have failed to study general aviation fuel elasticities. Chapter one fills that gap and examines the elasticity of aviation gasoline consumption in United States general aviation. Utilizing aggregate time series and dynamic panel data, the price and income elasticities of demand are estimated. The price elasticity of demand for aviation gasoline is estimated to range from -0.093 to -0.185 in the short-run and from -0.132 to -0.303 in the long-run. These results prove to be similar in magnitude to automobile gasoline elasticities and therefore tax policies could more closely mirror those of automobile tax policies. The second chapter examines the costs associated with general aviation accidents. Given the large number of general aviation operations as well as the large number of fatalities and injuries attributed to general aviation accidents in the United States, understanding the costs to society is of great importance. This chapter estimates the direct and indirect costs associated with general aviation accidents in the United States. The indirect costs are estimated via the human capital approach in addition to the willingness-to-pay approach. The average annual accident costs attributed to general aviation are found to be 2.32 billion and 3.81 billion (2006 US) utilizing the human capital approach and willingness-to-pay approach, respectively. These values appear to be fairly robust when subjected to a sensitivity analysis. These costs highlight the large societal benefits from accident and fatality reduction. The final chapter derives a second-best optimal aviation gasoline tax developed from previous general equilibrium frameworks. This optimal tax reflects both the lead pollution and accident externalities, as well as the balance between excise taxes and labor taxes to finance government spending. The calculated optimal tax rate is 4.07 per gallon, which is over 20 times greater than the current tax rate and 5 times greater than the Federal Aviation Administration proposed tax rate. The calculated optimal tax rate is also over 3 times greater than automobile gasoline optimal tax rates calculated by previous studies. The Pigovian component is 1.36, and we observe that the accident externality is taxed more severely than the pollution externality. The largest component of the optimal tax rate is the Ramsey component. At 2.70, the Ramsey component reflects the ability of the government to raise revenue aviation gasoline which is price inelastic. The calculated optimal tax is estimated to reduce lead emissions by over 10 percent and reduce accidents by 20 percent. Although unlikely to be adopted by policy makers, the optimal tax benefits are apparent and it sheds light on the need to reduce these negative externalities via policy changes.

Sobieralski, Joseph Bernard

188

In-depth survey of sunspot and active region catalogs  

NASA Astrophysics Data System (ADS)

When consulting detailed photospheric catalogs for solar activity studies spanning long time intervals, solar physicists face multiple limitations in the existing catalogs: finite or fragmented time coverage, limited time overlap between catalogs and even more importantly, a mismatch in contents and conventions. In view of a study of new sunspot-based activity indices, we have conducted a comprehensive survey of existing catalogs. In a first approach, we illustrate how the information from parallel catalogs can be merged to form a much more comprehensive record of sunspot groups. For this, we use the unique Debrecen Photoheliographic Data (DPD), which is already a composite of several ground observatories and SOHO data, and the USAF/Mount Wilson catalog from the Solar Optical Observing Network (SOON). We also describe our semi-interactive cross-identification method, which was needed to match the non-overlapping solar active region nomenclature, the most critical and subtle step when working with multiple catalogs. This effort, focused here first on the last two solar cycles, should lead to a better central database collecting all available sunspot group parameters to address future solar cycle studies beyond the traditional sunspot index time series Ri.

Lefèvre, Laure; Clette, Frédéric; Baranyi, Tunde

2011-08-01

189

Navigating towards improved surgical safety using aviation-based strategies.  

PubMed

Safety practices in the aviation industry are being increasingly adapted to healthcare in an effort to reduce medical errors and patient harm. However, caution should be applied in embracing these practices because of limited experience in surgical disciplines, lack of rigorous research linking these practices to outcome, and fundamental differences between the two industries. Surgeons should have an in-depth understanding of the principles and data supporting aviation-based safety strategies before routinely adopting them. This paper serves as a review of strategies adapted to improve surgical safety, including the following: implementation of crew resource management in training operative teams; incorporation of simulation in training of technical and nontechnical skills; and analysis of contributory factors to errors using surveys, behavioral marker systems, human factors analysis, and incident reporting. Avenues and challenges for future research are also discussed. PMID:17477934

Kao, Lillian S; Thomas, Eric J

2008-04-01

190

FAA Safety Resources for Aviation Maintenance Technicians  

NSDL National Science Digital Library

Brought to you by the FAA Safety Team, the aviation maintenance technician (AMT) section of the Safety Team�s digital library offers videos, power point presentations, pamphlets, and articles on topics such as runway safety and maintenance for aircraft owners. While the number of resources in the aviation maintenance technician section of the digital library may be low, the resources themselves are informative and would be valuable to instructors and students concerned with Aviation Safety.

191

General Aviation in Nebraska: Nebraska SATS Project Background Paper No. 1  

NASA Technical Reports Server (NTRS)

The Nebraska SATS project is a state-level component of NASA's Small Aircraft Transportation System (SATS). During the next several years the project will examine several different factors affecting SATS implementation in Nebraska. These include economic and taxation issues, public policy issues, airport planning processes, information dissemination strategies, and systemic change factors. This background paper profiles the general aviation system in Nebraska. It is written to provide information about the "context" within which SATS will be pursued. The primary focus is thus on describing and providing background information about the current situation. A secondary focus is on drawing general conclusions about the ability of the current system to incorporate the types of changes implied by SATS. First, some brief information on the U.S. aviation system is provided. The next two sections profile the current general aviation aircraft and pilot base. Nebraska's system of general aviation airports is then described. Within this section of the paper, information is provided on the different types of general aviation airports in Nebraska, airport activity levels and current infrastructure. The fourth major section of the background paper looks at Nebraska's local airport authorities. These special purpose local governments oversee the majority of the general aviation airports in the state. Among the items examined are total expenditures, capital expenditures and planning activities. Next, the paper provides background information on the Nebraska Department of Aeronautics (NDA) and recent Federal funding for general aviation in Nebraska. The final section presents summary conclusions.

Smith, Russell; Wachal, Jocelyn

2000-01-01

192

Systemwide Aviation/Aerospace Education Program Review. Aviation/Aerospace Task Force's Report to the Oklahoma State Regents for Higher Education.  

ERIC Educational Resources Information Center

A program review was done of all aviation/aerospace-related higher education programs in Oklahoma. A team of nine experts reviewed statistics on the state's public and private programs, conducted a survey of institutions on industry status and projected training needs, and visited all 10 program locations. The project applied guidelines to…

Oklahoma State Regents for Higher Education, Oklahoma City.

193

Post stapedotomy aviation: A changing scenario  

PubMed Central

Aeromedical implications of stapedotomy like rapid barometric changes and G forces are generally thought to put an end to the aviation career of an aviator. Aviation industry has grown tremendously in the last few decades, and aviation now is not only occupational but also recreational. The Indian Military Aviation rules state that, “Stapedectomy cases will be assessed permanently unfit for flying duties. These cases will be cautioned against flying in an unpressurised aircraft.” The basis of this is the aeromedical concerns associated with stapedotomy as clinical conditions which are of minor significance on the ground may become aggravated in the air. With an ever expanding civil and military aviation industry, the number of aviators who have undergone stapedotomy has also increased. Though grounding the aircrew is the safest option, but if medical certification is denied to all, then the majority who can fly safely will also be excluded, thus denying the organization of its trained resources. This paper discusses post otosclerosis and post stapedotomy aeromedical concerns, reviews existing literature concerning post stapedotomy aviation and various post stapedotomy aviation policies. PMID:25598613

Rajguru, Renu

2014-01-01

194

Aviation turbine fuels: An assessment of alternatives  

NASA Technical Reports Server (NTRS)

The general outlook for aviation turbine fuels, the effect that broadening permissible aviation turbine fuel properties could have on the overall availability of such fuels, the fuel properties most likely to be affected by use of lower grade petroleum crudes, and the research and technology required to ensure that aviation turbine fuels and engines can function satisfactorily with fuels having a range of fuel properties differing from those of current specification fuel are assessed. Views of industry representatives on alternative aviation turbine fuels are presented.

1982-01-01

195

Collegiate Aviation Research and Education Solutions to Critical Safety Issues. UNO Aviation Monograph Series. UNOAI Report.  

ERIC Educational Resources Information Center

This document contains four papers concerning collegiate aviation research and education solutions to critical safety issues. "Panel Proposal Titled Collegiate Aviation Research and Education Solutions to Critical Safety Issues for the Tim Forte Collegiate Aviation Safety Symposium" (Brent Bowen) presents proposals for panels on the following…

Bowen, Brent, Ed.

196

Aviation and the Environment. A Selected, Annotated Bibliography Related to Aviation's Responses Toward Improving the Environment.  

ERIC Educational Resources Information Center

This informal, brief bibliography attempts to stress the positive side of aviation, annotating documents that explain how the airlines, aircraft engine manufacturers, government agencies, military aviation, and general aviation are meeting their responsibilities in solving environmental problems. Topics arousing public concern are identified:…

Marshall, Jane

197

Workshop on the Impacts of Aviation on Climate Change  

NASA Technical Reports Server (NTRS)

Projections indicate that demand for aviation transportation will increase by more than two fold over the next few decades. Timely action is needed to understand and quantify the potential climate impacts of aviation emissions particularly given the sustained lapse over the last several years in U.S. research activities in this area. In response to the stated needs, a group of international experts participated in the Workshop on the Impacts of Aviation on Climate Change during June 7-9, 2006 in Boston, MA. The workshop focus was on the impacts of subsonic aircraft emissions in the UT/LS region and on the potential response of the climate system. The goals of the workshop were to assess and document the present state of scientific knowledge, to identify the key underlying uncertainties and gaps, to identify ongoing and further research needed, to explore the development of climate impact metrics, and to help focus the scientific community on the aviation-climate change research needs. The workshop concluded that the major ways that aviation can affect climate, in agreement with the 1999 assessment by the Intergovernmental Panel on Climate Change (IPCC), are the direct climate effects from CO2 and water vapor emissions, the indirect forcing on climate resulting from changes in the distributions and concentrations of ozone and methane as a primary consequence of aircraft nitrogen oxide (NOx) emissions, the direct effects (and indirect effects on clouds) from emitted aerosols and aerosol precursors, and the climate effects associated with contrails and cirrus cloud formation. The workshop was organized in three subgroups: (1) Effects of aircraft emissions on the UT/LS chemical composition, (2) Effects of water and particle emissions on contrails and on cirrus clouds, and (3) Impacts on climate from aircraft emissions and identification of suitable metrics to measure these impacts. The workshop participants acknowledged the need for focused research specifically to address the uncertainties and gaps in our understanding of current and projected impacts of aviation on climate and to develop metrics to better characterize these impacts. This may entail coordination and/or expansion of existing and planned climate research programs, or new activities. Such efforts should include strong and continuing interactions among the science and aviation communities as well as policymakers to develop well-informed decisions.

Wuebbles, Don; Gupta, Mohan; Ko, Malcolm

2006-01-01

198

77 FR 39745 - General Aviation Search and Rescue  

Federal Register 2010, 2011, 2012, 2013, 2014

...TRANSPORTATION SAFETY BOARD General Aviation Search and Rescue The National Transportation...day forum focused on general aviation search and rescue operations on July 17 and 18...of a general aviation airplane, inland searches for the aircraft are conducted by...

2012-07-05

199

Development of an autoland system for general aviation aircraft  

E-print Network

Accidents due to engine failure, pilot disorientation or pilot incapacitation occur far more frequently in general aviation than in commercial aviation, yet general aviation aircraft are equipped with less safety-enhancing ...

Siegel, Diana

2012-01-01

200

78 FR 3908 - Aviation Security Advisory Committee (ASAC) Meeting  

Federal Register 2010, 2011, 2012, 2013, 2014

...Docket No. TSA-2011-0008] Aviation Security Advisory Committee (ASAC...will hold a meeting of the Aviation Security Advisory Committee (ASAC...TSA on matters affecting civil aviation security. This meeting is open to...

2013-01-17

201

78 FR 41413 - Aviation Security Advisory Committee (ASAC) Meeting  

Federal Register 2010, 2011, 2012, 2013, 2014

...Docket No. TSA-2011-0008] Aviation Security Advisory Committee (ASAC...will hold a meeting of the Aviation Security Advisory Committee (ASAC...recommendations for improving aviation security measures to the...

2013-07-10

202

77 FR 53902 - Aviation Security Advisory Committee (ASAC) Meeting  

Federal Register 2010, 2011, 2012, 2013, 2014

...Docket No. TSA-2011-0008] Aviation Security Advisory Committee (ASAC...will hold a meeting of the Aviation Security Advisory Committee (ASAC...TSA on matters affecting civil aviation security. This meeting is open to...

2012-09-04

203

76 FR 27384 - Agency Information Collection Activity (Veteran Suicide Prevention Online Quantitative Surveys...  

Federal Register 2010, 2011, 2012, 2013, 2014

...DEPARTMENT OF VETERANS AFFAIRS [OMB Control No. 2900-New...Information Collection Activity (Veteran Suicide Prevention Online Quantitative Surveys) Under OMB Review AGENCY: Veterans Health Administration,...

2011-05-11

204

NASA research on general aviation power plants  

NASA Technical Reports Server (NTRS)

Research activities within NASA to support general aviation industry in improving propulsion engines are described. Near-term objectives include improvements of gasoline piston engines to achieve fuel savings and reduce emissions well below EPA levels. To meet the longer term goals, advanced combustion research has been considered as essential in obtaining further improvements in BSFC (break specific fuel consumption). Modifications of an aircraft rotary engine were tested and it was found that by increasing the compression ratio and other refinements the BSFC was improved by 15%. The applicability of available large turbofan engine technology to small engines in order to obtain significant reductions in noise and pollutant emissions is being tested. Studies have been conducted at exploring the possibility of achieving high improvements in cost and performance for turboprop engines of less than 1000 horsepower.

Stewart, W. L.; Weber, R. J.; Willis, E. A.; Sievers, G. K.

1979-01-01

205

Characteristics of successful aviation leaders of Oklahoma  

NASA Astrophysics Data System (ADS)

Scope and method of study. The purpose of the study was to examine the personal traits, skills, practices, behaviors, background, academic, and career success patterns of selected aviation leaders in Oklahoma. A purposive sample of 18 leaders who had achieved a top-ranked position of aviation leadership in an organization or a position of influence in the community was selected for interview. The leaders chosen for interview came from a variety of aviation organizations including government, academia, military, corporate aviation, and air carrier leadership as well as community leadership (specifically those aviation personnel who were engaged in a political or civic leadership role). Findings and conclusions. This study identified no common career choices, educational, family, or other background factors exclusively responsible for leadership success of all of the participants. Some of the more significant findings were that a high percentage of the leaders held undergraduate and advanced degrees; however, success had been achieved by some who had little or no college education. Aviation technical experience was not a prerequisite for aviation leadership success in that a significant number of the participants held no airman rating and some had entered positions of aviation leadership from non-aviation related careers. All had received some positive learning experience from their family background even those backgrounds which were less than desirable. All of the participants had been involved in volunteer civic or humanitarian leadership roles, and all had received numerous honors. The most frequently identified value expressed by the leaders was honesty; the predominant management style was participative with a strong backup style for directing, the most important skills were communication and listening skills, and the most frequently mentioned characteristics of success were honesty, credibility, vision, high standards, love for aviation and fiscal responsibility. The most frequently identified curriculum need across all aviation disciplines was that of communication skills.

Kutz, Mary N. Hill

206

Correlation of GPS signal fades due to ionospheric scintillation for aviation applications  

NASA Astrophysics Data System (ADS)

Deep and frequent Global Positioning System (GPS) signal fading due to strong ionospheric scintillation is a major concern for GPS-guided aviation in equatorial areas during high solar activity. A GPS aviation receiver may lose carrier tracking lock under deep fading, and a lost channel cannot be used for position calculation until lock is reestablished. Hence, frequent loss of lock due to frequent fading can significantly reduce the availability of GPS aviation. However, the geometric diversity of the satellites can mitigate scintillation impact on GPS aviation depending on the correlation level of deep fades between satellites. This paper proposes a metric to measure the correlation level of two fading channels from the perspective of GPS aviation. Using this metric, the satellite-to-satellite correlation is studied based on real scintillation data. The low satellite-to-satellite correlation shown in this paper envisions notable availability benefit from the geometric diversity of satellites under strong scintillation. In addition, this paper proposes a way to generate correlated fading processes with arbitrary correlation coefficients. Using this correlated fading process model, the availability of Localizer Performance with Vertical guidance (LPV)-200 under severe scintillation scenarios is analyzed. The result emphasizes the importance of a fast reacquisition capability of an aviation receiver after a brief outage, which is not currently mandated by the aviation receiver performance standards.

Seo, Jiwon; Walter, Todd; Enge, Per

2011-05-01

207

The Rotary Combustion Engine: a Candidate for General Aviation. [conferences  

NASA Technical Reports Server (NTRS)

The state of development of the rotary combustion engine is discussed. The nonturbine engine research programs for general aviation and future requirements for general aviation powerplants are emphasized.

1978-01-01

208

Antimicrobial stewardship activities: a survey of Queensland hospitals.  

PubMed

Objective In 2011, the Australian Commission on Safety and Quality in Health Care (ACSQHC) recommended that all hospitals in Australia must have an Antimicrobial Stewardship (AMS) program by 2013. Nevertheless, little is known about current AMS activities. This study aimed to determine the AMS activities currently undertaken, and to identify gaps, barriers to implementation and opportunities for improvement in Queensland hospitals. Methods The AMS activities of 26 facilities from 15 hospital and health services in Queensland were surveyed during June 2012 to address strategies for effective AMS: implementing clinical guidelines, formulary restriction, reviewing antimicrobial prescribing, auditing antimicrobial use and selective reporting of susceptibility results. Results The response rate was 62%. Nineteen percent had an AMS team (a dedicated multidisciplinary team consisting of a medically trained staff member and a pharmacist). All facilities had access to an electronic version of Therapeutic Guidelines: Antibiotic, with a further 50% developing local guidelines for antimicrobials. One-third of facilities had additional restrictions. Eighty-eight percent had advice for restricted antimicrobials from in-house infectious disease physicians or clinical microbiologists. Antimicrobials were monitored with feedback given to prescribers at point of care by 76% of facilities. Deficiencies reported as barriers to establishing AMS programs included: pharmacy resources, financial support by hospital management, and training and education in antimicrobial use. Conclusions Several areas for improvement were identified: reviewing antimicrobial prescribing with feedback to the prescriber, auditing, and training and education in antimicrobial use. There also appears to be a lack of resources to support AMS programs in some facilities. What is known about the topic? The ACSQHC has recommended that all hospitals implement an AMS program by 2013 as a requirement of Standard 3 (Preventing and Controlling Healthcare-Associated Infections) of the National Safety and Quality Health Service Standards. The intent of AMS is to ensure appropriate prescribing of antimicrobials as part of the broader systems within a health service organisation to prevent and manage healthcare-associated infections, and improve patient safety and quality of care. This criterion also aligns closely with Standard 4: Medication Safety. Despite this recommendation, little is known about what AMS activities are undertaken in these facilities and what additional resources would be required in order to meet these national standards. What does the paper add? This is the first survey that has been conducted of public hospital and health services in Queensland, a large decentralised state in Australia. This paper describes what AMS activities are currently being undertaken, identifies practice gaps, barriers to implementation and opportunities for improvement in Queensland hospitals. What are the implications for practitioners? Several areas for improvement such as reviewing antimicrobial prescribing with feedback to the prescriber, auditing, and training and education in antimicrobial use have been identified. In addition, there appears to be a lack of resources to support AMS programs in some facilities. PMID:25376911

Avent, Minyon L; Hall, Lisa; Davis, Louise; Allen, Michelle; Roberts, Jason A; Unwin, Sean; McIntosh, Kylie A; Thursky, Karin; Buising, Kirsty; Paterson, David L

2014-11-01

209

Aviation system modeling study and alternatives  

NASA Technical Reports Server (NTRS)

The Aviation System Modeling Study was directed toward two primary goals: an improved understanding of the U.S. aviation system, and technology. There are three major categories into which the individual study efforts may be subdivided. These three categories are: special issue studies, task studies, and data base development.

1975-01-01

210

Aviation System Analysis Capability Executive Assistant Analyses  

NASA Technical Reports Server (NTRS)

This document describes the analyses that may be incorporated into the Aviation System Analysis Capability Executive Assistant. The document will be used as a discussion tool to enable NASA and other integrated aviation system entities to evaluate, discuss, and prioritize analyses.

Roberts, Eileen; Kostiuk, Peter

1999-01-01

211

Machinist's Mate J 1 and C: Aviation.  

ERIC Educational Resources Information Center

The rate training manual is one of a series of training manuals prepared for enlisted personnel of the Navy and Naval Reserve studying for advancement from the Aviation Machinist's Mate ADJ2 rating to ADJ1 to ADJC. Aviation Machinist's Mates J maintain aircraft jet engines and their related systems. Chpater 1 discusses the enlisted rating…

Naval Training Publications Center, Memphis, TN.

212

Aviation Career Awareness Program [and Related Materials].  

ERIC Educational Resources Information Center

The learning packet focuses on general aviation and is to be used in career awareness programs at the elementary level. It includes a document which presents a group of units on general aviation and its related careers. The units include the following: (1) aircraft manufacturing, (2) instruments and controls, (3) how airplanes fly, (4) flight…

Petrie, Edwin T.

213

Net Taxable Gasoline Gallons (Including Aviation Gasoline)  

E-print Network

Net Taxable Gasoline Gallons (Including Aviation Gasoline) Period 2000 2001 (2) 2002 2003 2004 "gross" to "net" , was deemed impractical. (5) This report replaces the Gross Taxable Gasoline Gallons (Including Aviation Gasoline) report which will not be produced after December 2002. (6) The November 2007

214

VERIFICATION SURVEY ACTIVITIES IN FS SURVEY UNITS 7, 8, 9, 10, 11, 13 & 14 AT THE SEPARATIONS PROCESS RESEARCH UNIT  

SciTech Connect

FINAL INTERIM REPORT VERIFICATION SURVEY ACTIVITIES IN FINAL STATUS SURVEY UNITS 7, 8, 9, 10, 11, 13 AND 14 AT THE SEPARATIONS PROCESS RESEARCH UNIT, Niskayuna, New York 0496-SR-03-0. The Separations Process Research Unit (SPRU) facilities were constructed in the late 1940s to research the chemical separation of plutonium and uranium. SPRU operated between February 1950 and October 1953. The research activities ceased following the successful development of the reduction/oxidation and plutonium/uranium extraction processes that were subsequently used by the Hanford and the Savannah River sites.

M.G. JADICK

2010-05-26

215

78 FR 17359 - Takes of Marine Mammals Incidental to Specified Activities; Marine Geophysical Survey in the...  

Federal Register 2010, 2011, 2012, 2013, 2014

...survey, particularly during turning movements, and short-duration equipment maintenance...activity. 5. Data on the behavior and movement patterns of marine mammals seen at times...state; Observed behaviors and types of movements versus airgun activity state;...

2013-03-21

216

Aviation  

Microsoft Academic Search

Jawad Rachami is a senior manager at a US-based aerospace engineering fi rm. Morocco faces a complex development challenge: searching for growth amid ailing fundamentals and a serious global recession—a challenge comparable to that of building a plane while trying to fl y at the same time. In the last decade, Morocco has reformed a number of its institutions and

JAWAD RACHAMI

1979-01-01

217

A Survey of the Friends of the Library Recent Activities in Ohio: Report--Description.  

ERIC Educational Resources Information Center

In October 1978 a survey was conducted of Friends of the Library (FOL) activities during the preceding 6 years in support of public, branch, academic, public school, media center, institution, and special libraries in Ohio. The purpose of the survey was to identify and provide a comprehensive summary listing of the recent activities of Friends…

McLean, Dulce DiDio

218

Flight duration, airspeed practices and altitude management of airplanes involved in the NASA VGH General Aviation Program  

NASA Technical Reports Server (NTRS)

Flight duration, airspeed, and altitude information obtained from NASA velocity gravity height (VGH) recorders is presented for each of 95 general aviation airplanes flown in twin- and single-engine executive, personal, instructional, commercial survey, aerial application, aerobatic, commuter, and float operations. These data complement normal acceleration data obtained from the same airplanes and reported in NASA-TM-84660, and together they provide a data base for the design and analysis of general aviation airplane operations.

Jewel, Joseph W., Jr.

1987-01-01

219

Environmentally Responsible Aviation - Real Solutions for Environmental Challenges Facing Aviation  

NASA Technical Reports Server (NTRS)

The combined reality of persistently strong growth in air traffic and the vital economic role of the air transport system result in continued demand for the progress of technology for the reduction of aircraft noise, emissions of oxides of nitrogen, and fuel burn. NASA s Environmentally Responsible Aviation (ERA) project has set aggressive goals in these three areas including a noise goal of 42 dB cumulative below the Stage 4 certification level. The goal for the reduction of oxides of nitrogen is 75% below the current standard. The fuel burn reduction goal is 50% below that of a current state-of-the-art aircraft. Furthermore, the overall goal of ERA is to mature technologies that will meet these goals simultaneously and with a timeframe of 2020 for technical readiness. This paper outlines the key technologies and the progress achieved to date toward the goals.

Collier, Fayette; Thomas, Russell; Burley, Casey; Nickol, Craig; Lee, Chi-Ming; Tong, Michael

2010-01-01

220

Questionnaire Survey of PHysical activITy in General Practitioners (PHIT GP Study)  

PubMed Central

Objectives To assess the levels of physical activity and other health related behaviours of General Practitioners (GPs) and compare their reported levels of physical activity with those of the general population. Study Design Cross sectional postal questionnaire survey. Methods A questionnaire, which did not allow identification of individual respondents, was posted to all 1074 (GPs) in Northern Ireland. It included the validated International Physical Activity Questionnaire (IPAQ) and questions relating to smoking and alcohol consumption. A national survey of a representative sample of the general population of similar age (29-67 years; n = 3010) provided comparative data. Results 735 GPs responded (68.4%). IPAQ data indicated that fewer GPs (43.4%) were “physically inactive” compared to the general population (56.2%) (p <0.001) and to a subgroup of professionals (51.8%) (p < 0.016). Compared to the general population, relatively fewer GPs reported smoking (4.2% v 29%; p<0.001); more reported drinking alcohol (86.5% v 71.6%; p<0.001) but fewer reported drinking above recommended limits (12.6% v 16.9%; p < 0.001). Conclusions Our findings suggest that GPs are better than the general population at following health promotion advice. Since their personal habits influence the impact of their advice to their patients, their healthy lifestyles should be encouraged and further efforts should be made to promote activity among those who are physically inactive. PMID:17476823

McGrady, Finbar P; McGlade, Kieran J; Cupples, Margaret E; Tully, Mark A; Hart, Nigel; Steele, Keith

2007-01-01

221

Three-Dimensional Georadar Surveying of Active Faults  

NASA Astrophysics Data System (ADS)

For reliable seismic hazard estimates and knowledge of the fundamental processes that govern surface rupturing earthquakes it is necessary to determine the locations and geometries of active faults, including those buried beneath recently deposited sediments. Although excavated trenches may supply important details on hidden faults, the subsurface volumes that can be examined in this manner are generally small. In an attempt to provide paleoseismologists with a non-invasive tool that will allow them to investigate regions between and beyond sparsely spaced trenches, we have developed cost-effective 3-D georadar data acquisition, processing and interpretation techniques. These techniques have been applied with varying degrees of success to a range of active strike-slip, normal, thrust and transpressional fault zones. Our 3-D georadar data across the northern San Andreas fault in California revealed, unexpectedly, the existence of two fault strands. An offset of a linear-trending feature suggested that 4.5 5.5 m of horizontal displacement had occurred on one of these strands, either during the 1906 San Francisco earthquake or earlier. Somewhat surprisingly, two fault stands were also detected in 3-D georadar data acquired across the Wellington strike-slip fault in New Zealand (NZ). The first-ever fault-plane reflections from an active strike-slip fault were observed in these data. Georadar data collected within the Taupo Volcanic Zone (NZ) contained two prominent parallel reflections that originated from the boundaries of Late Pleistocene lacustrine and tephra deposits. Distinct vertical offsets of these reflections allowed us to estimate displacements at individual normal fault strands across the entire inner graben of the Maleme Fault Zone. The total displacement represented by these offsets was roughly 10-20% greater than that inferred from geomorphological studies, demonstrating the limitations of surface observations for determining cumulative fault movements. In the Canterbury Plains west of Christchurch (NZ), the results of 3-D georadar surveying not only confirmed the location of a fault zone, the existence of which had been postulated on the basis of subtle geomorphological features, but also demonstrated that it comprised multiple strands. Finally, 3-D georadar data allowed us to map the detailed geometry of several thrust planes of the Ostler fault system (NZ).

McClymont, A.; Campbell, J.; Corboz, P.; Grass, C.; Green, A.; Gross, R.; Holliger, K.; Horstmeyer, H.; Nobes, D.; Streich, R.; Tronicke, J.; Villamor, P.

2005-05-01

222

Shock waves in aviation security and safety  

NASA Astrophysics Data System (ADS)

Accident investigations such as of Pan Am 103 and TWA 800 reveal the key role of shock-wave propagation in destroying the aircraft when an on-board explosion occurs. This paper surveys shock wave propagation inside an aircraft fuselage, caused either by a terrorist device or by accident, and provides some new experimental results. While aircraft-hardening research has been under way for more than a decade, no such experiments to date have used the crucial tool of high-speed optical imaging to visualize shock motion. Here, Penn State's Full-Scale Schlieren flow visualization facility yields the first shock-motion images in aviation security scenarios: 1) Explosions beneath full-size aircraft seats occupied by mannequins, 2) Explosions inside partially-filled luggage containers, and 3) Luggage-container explosions resulting in hull-holing. Both single-frame images and drum-camera movies are obtained. The implications of these results are discussed, though the overall topic must still be considered in its infancy.

Settles, G. S.; Keane, B. T.; Anderson, B. W.; Gatto, J. A.

223

Principles and Guidelines for Duty and Rest Scheduling in Commercial Aviation  

NASA Technical Reports Server (NTRS)

The aviation industry requires 24-hour activities to meet operational demands. Growth in global long-haul, regional, overnight cargo, and short-haul domestic operations will continue to increase these round-the-clock requirements. Flight crews must be available to support 24-hour-a-day operations to meet these industry demands. Both domestic and international aviation can also require crossing multiple time zones. Therefore, shift work, night work, irregular work schedules, unpredictable work schedules, and dm zone changes will continue to be commonplace components of the aviation industry. These factors pose known challenges to human physiology, and because they result in performance-impairing fatigue, they pose a risk to safety. It is critical to acknowledge and, whenever possible, incorporate scientific information on fatigue, human sleep, and circadian physiology into 24-hour aviation operations. Utilization of such scientific information can help promote crew performance and alertness during flight operations and thereby maintain and improve the safety margin.

Dinges, David F.; Graeber, R. Curtis; Rosekind, Mark R.; Samel, Alexander

1996-01-01

224

Studies towards assessing the effects of aviation on climate  

NASA Astrophysics Data System (ADS)

Emissions from aviation are an important component in the overall concerns about the effects of human activities on climate. Aviation emissions modify the chemical and physical properties of the upper troposphere and lower stratosphere (UTLS) in various ways. Aircraft emit gases and particles that can either directly or indirectly affect climate and air quality, including: carbon dioxide (CO2); nitrogen oxides (NOx) that can increase ozone (O3) production and increase the destruction of methane (CH4); water vapor that under certain atmospheric conditions can lead to contrail formation; and soot and other particles that along with contrails can affect the amount and characteristics of cirrus clouds. Soot and sulfate particles can also change the cloudiness by acting as cloud condensation nuclei. Due to the high growth in air traffic that is projected to continue, it is important to understand the effects of aviation on air quality and climate. Based on then existing analyses of the emissions and their effects, the aviation contribution in changing the radiative forcing on the climate system was about 5% of the total human-related emissions (relative to 1750) in 2005 (Lee et al., 2009). This contribution is a result of various effects, especially the direct effects of CO2, NOx-induced effects, aerosol direct and indirect effects, and increased cloudiness from contrail formation and aerosols acting as cloud condensation nuclei. One of the main challenges of the aviation scientific community has been to increase the level of scientific understanding of these effects, especially with respect to those most uncertain (i.e. NOx effects, contrail-cirrus and aerosol effects). Another challenge has been to develop a simple climate model (SCM) that has the level of sophistication necessary to accurately assess aviation induced climate effects while being easy to use by policy makers for use in policy considerations. The main objectives in this study were: (1) to evaluate the capabilities and limitations of simple climate models for evaluating aviation policy options and tradeoffs, and (2) to increase the scientific understanding of aviation NOx-induced effects on climate. With regard to the first goal, enhancing the evaluation of SCMs, the carbon cycle and energy balance treatments in several widely used simplified climate models were evaluated. The findings from this study resulted in modifications to the carbon cycle and energy balance model components of the APMT model that is used extensively by FAA in aviation policy analyses. With regard to the second goal, 3 lines of research were pursued to increase the scientific understanding of aviation NOx-induced effects on climate. First, aviation NOx-induced effects were quantified using three-dimensional (3-D) climate-chemistry models and further, an intercomparison of NOx-induced effects in 3-D climate-chemistry models was performed. The NOx-induced forcings obtained in 3-D simulations were further used to update the parameterization of these effects in SCMs. Second, two additional NOx-induced effects (i.e., reduction in long-term O3 concentrations and lower stratospheric water vapor (SWV)) that have not been fully accounted for in previous studies were quantified based on parameterizing the results obtained in the 3-D simulations. Results indicate that the inclusion of long-term O3 and SWV RFs decreases the net aviation-induced RFs by about 21 to 31% for different range of scenarios studied. Finally, the representation of aviation NOx-induced effects in SCMs were evaluated and improved. The parameterization was improved based on the results of the 3-D simulations and by including the lifetime of the perturbed species and their emissions history into RF calculations. This resulted in 10 to 36% higher aviation NOx-induced net forcing than the net forcings that were reported in the literature, previously. Third, a set of experiments were performed to directly calculate the aviation NOx-induced changes in CH4 that were otherwise calculated through a simple parameterization, and also to

Khodayari, Arezoo

225

Water-resources activities of the U.S. Geological Survey in Minnesota, 1993 water year  

USGS Publications Warehouse

Water-resources activities of the Minnesota District, Water Resources Division, U.S. Geological Survey are a continued response to the need for information on the quantity and quality of water resources. U.S. Geological Survey water-resource activities in Minnesota are done in cooperation with State, local, and other Federal agencies. Some activities are short in duration (1-5 years), while others are continuous. This report is a summary of water-resource activities in the Minnesota District for the 1993 water year. A list of reports published during the 1993 water year and additional sources of U.S. Geological Survey publications also are included.

Amos, G.L.

1994-01-01

226

Aviation Research and the Internet  

NASA Technical Reports Server (NTRS)

The Internet is a network of networks. It was originally funded by the Defense Advanced Research Projects Agency or DOD/DARPA and evolved in part from the connection of supercomputer sites across the United States. The National Science Foundation (NSF) made the most of their supercomputers by connecting the sites to each other. This made the supercomputers more efficient and now allows scientists, engineers and researchers to access the supercomputers from their own labs and offices. The high speed networks that connect the NSF supercomputers form the backbone of the Internet. The World Wide Web (WWW) is a menu system. It gathers Internet resources from all over the world into a series of screens that appear on your computer. The WWW is also a distributed. The distributed system stores data information on many computers (servers). These servers can go out and get data when you ask for it. Hypermedia is the base of the WWW. One can 'click' on a section and visit other hypermedia (pages). Our approach to demonstrating the importance of aviation research through the Internet began with learning how to put pages on the Internet (on-line) ourselves. We were assigned two aviation companies; Vision Micro Systems Inc. and Innovative Aerodynamic Technologies (IAT). We developed home pages for these SBIR companies. The equipment used to create the pages were the UNIX and Macintosh machines. HTML Supertext software was used to write the pages and the Sharp JX600S scanner to scan the images. As a result, with the use of the UNIX, Macintosh, Sun, PC, and AXIL machines, we were able to present our home pages to over 800,000 visitors.

Scott, Antoinette M.

1995-01-01

227

Cooperative Demonstration Program To Train Aviation Maintenance Technicians. Final Report.  

ERIC Educational Resources Information Center

The Alabama Aviation and Technical College, working with representatives of the aviation industry, the military, the Alabama Department of Aeronautics, and the Federal Aviation Administration, developed a training program for aviation maintenance technicians. The program also aimed to emphasize and expand opportunities for minorities, females, and…

Alabama Aviation and Technical Coll., Ozark.

228

Real-Time Patient Survey Data During Routine Clinical Activities for Rapid-Cycle Quality Improvement  

PubMed Central

Background Surveying patients is increasingly important for evaluating and improving health care delivery, but practical survey strategies during routine care activities have not been available. Objective We examined the feasibility of conducting routine patient surveys in a primary care clinic using commercially available technology (Web-based survey creation, deployment on tablet computers, cloud-based management of survey data) to expedite and enhance several steps in data collection and management for rapid quality improvement cycles. Methods We used a Web-based data management tool (survey creation, deployment on tablet computers, real-time data accumulation and display of survey results) to conduct four patient surveys during routine clinic sessions over a one-month period. Each survey consisted of three questions and focused on a specific patient care domain (dental care, waiting room experience, care access/continuity, Internet connectivity). Results Of the 727 available patients during clinic survey days, 316 patients (43.4%) attempted the survey, and 293 (40.3%) completed the survey. For the four 3-question surveys, the average time per survey was overall 40.4 seconds, with a range of 5.4 to 20.3 seconds for individual questions. Yes/No questions took less time than multiple choice questions (average 9.6 seconds versus 14.0). Average response time showed no clear pattern by order of questions or by proctor strategy, but monotonically increased with number of words in the question (<20 words, 21-30 words, >30 words)—8.0, 11.8, 16.8, seconds, respectively. Conclusions This technology-enabled data management system helped capture patient opinions, accelerate turnaround of survey data, with minimal impact on a busy primary care clinic. This new model of patient survey data management is feasible and sustainable in a busy office setting, supports and engages clinicians in the quality improvement process, and harmonizes with the vision of a learning health care system. PMID:25768807

Jones, Robert E

2015-01-01

229

Changing the Landscape of Civil Aviation  

NASA Technical Reports Server (NTRS)

NASA is undertaking several bold new initiatives to develop revolutionary technologies for civil aviation. These technologies span the civil aviation fleet from general aviation to large subsonic and supersonic aircraft and promise to bring a new era of new aircraft, lower operation costs, faster more direct flight capabilities, more environmentally friendly aircraft, and safer airline operations. These initiatives have specific quantified goals that require technologies well beyond those currently being developed creating a bold new vision for aeronautics. Revolutionary propulsion systems are enabling for these advancements. This paper gives an overview of the new national aeronautics goals and explores for a selected subset of goals some of the revolutionary technologies will be required to meet some of these goals. The focus of the paper is on the pivotal role propulsion and icing technologies will play in changing the landscape of civil aviation.

Russo, Carol J.

1997-01-01

230

76 FR 78966 - Federal Aviation Administration  

Federal Register 2010, 2011, 2012, 2013, 2014

...Approval of Noise Compatibility Program for Kona International Airport at Keahole, Keahole, North Kona, HI AGENCY: Federal Aviation Administration...On April 20, 2011 the FAA approved the Kona International Airport at Keahole noise...

2011-12-20

231

Enabling America's Next Generation of Aviation Vehicles  

NASA Technical Reports Server (NTRS)

Viewgraphs o America's Next Generation of Aviation Vehicles are presented. The topics include: 1) UAV's- Unlimited Applications; 2) Global Challenges; 3) UAV/CNS Overview; 4) Communications; 5) Navigation; and 6) Surveillance.

2004-01-01

232

Aviation Safety Reporting System Meteorological and  

E-print Network

Aviation Safety Reporting System Meteorological and Aeronautical Information Services (AIS) Data Comments 12 Preliminary Conclusions 13 b | Meteorological & Aeronautical Information Services (AIS) Data Meteorological (MET) and Aeronautical Information Services (AIS) information is provided to the cockpit via data

233

Considering Object Oriented Technology in Aviation Applications  

NASA Technical Reports Server (NTRS)

Few developers of commercial aviation software products are using object-oriented technology (OOT), despite its popularity in some other industries. Safety concerns about using OOT in critical applications, uncertainty about how to comply with regulatory requirements, and basic conservatism within the aviation community have been factors behind this caution. The Federal Aviation Administration (FAA) and the National Aeronautics and Space Administration (NASA) have sponsored research to investigate and workshops to discuss safety and certification concerns about OOT and to develop recommendations for safe use. Two Object Oriented Technology in Aviation (OOTiA) workshops have been held and numerous issues and comments about the effect of OOT features and languages have been collected. This paper gives a high level overview of the OOTiA project, and discusses selected specific results from the March 2003 workshop. In particular, results in the form of questions to consider before making the decision to use OOT are presented.

Hayhurst, Kelly J.; Holloway, C. Michael

2003-01-01

234

NASA Research on General Aviation Power Plants  

NASA Technical Reports Server (NTRS)

Propulsion systems are key factors in the design and performance of general aviation airplanes. NASA research programs that are intended to support improvements in these engines are described. Reciprocating engines are by far the most numerous powerplants in the aviation fleet; near-term efforts are being made to lower their fuel consumption and emissions. Longer-term work includes advanced alternatives, such as rotary and lightweight diesel engines. Work is underway on improved turbofans and turboprops.

Stewart, W. L.; Weber, R. J.; Willis, E. A.; Sievers, G. K.

1978-01-01

235

A Workshop for the Aviation Community  

NASA Astrophysics Data System (ADS)

On 23-24 February 2004 at NOAA's Space Environment Center in Boulder, Colo., the SEC, Virgin Atlantic Airways, and SolarMetrics hosted an aviation workshop on integrating space weather information into the operating procedures for commercial airlines. The meeting, with representatives from the industry and academic communities, led to the formation of the International Committee for Space Weather Impacts on Aviation Safety working group.

Murtagh, William; Combs, Larry; Kunches, Joseph

2004-06-01

236

Monodisperse atomizers for agricultural aviation applications  

NASA Technical Reports Server (NTRS)

Conceptual designs of two monodisperse spray nozzles are described and the rationale used in each design is discussed. The nozzles were designed to eliminate present problems in agricultural aviation applications, such as ineffective plant coverage, drift due to small droplets present in the spray being dispersed, and nonuniform swath coverages. Monodisperse atomization techniques are reviewed and a synopsis of the information obtained concerning agricultural aviation spray applications is presented.

Christensen, L. S.; Steely, S. L.

1980-01-01

237

General Aviation Turbine Engine (GATE) study  

NASA Technical Reports Server (NTRS)

The feasibility of turbine engines for the smaller general aviation aircraft was investigated and a technology program for developing the necessary technology was identified. Major results included the definition of the 1988 general aviation market, the identification of turboprop and turboshaft engines that meet the requirements of the aircraft studies, a benefit analysis showing the superiority of gas turbine engines for portions of the market studied, and detailed plans for the development of the necessary technology.

Baerst, C. F.; Furst, D. G.

1979-01-01

238

Activities and services of the U.S. Geological Survey, Denver area, Colorado  

USGS Publications Warehouse

This booklet is a summary of the activities and services of the United States Geological Survey, written for people who have visited or plan to visit one or more of its offices in the Denver area as well as to provide general information about the Geological Survey and its work. Sources of additional information are listed on pages 42-43.

U.S. Geological Survey

1969-01-01

239

A SURVEY OF THE PRACTICES AND ACTIVITIES OF CANADIAN CLINICAL PSYCHOLOGISTS  

Microsoft Academic Search

To document the nature of clinical psychology in Canada, a national survey was conducted to collect data on clinical psychologists' demographic characteristics, professional affiliations, professional identities, therapeutic orientations and activities, and publications. Eightyeight members of the Canadian Register of Health Service Providers in Psychology returned questionnaires designed to assess these areas. Survey results are presented in detail, including the findings

JOHN HUNSLEY; MONIQUE LEFEBVRE

1990-01-01

240

Aviation human factors research in US universities: Potential contributions to national needs  

NASA Technical Reports Server (NTRS)

Universities can and should make vital contributions to national needs in aviation human factors. However, to guide and utilize university research effectively we must understand what types of expertise and facilities universities can bring to bear on aviation problems. We should be aware of where relevant research is already underway and where untapped potential exists. How does the character of research in universities differ from and complement research in government and industry laboratories? What conditions would encourage universities to focus on national priorities and would promote high quality, relevant research? This paper attempts to address these issues. It is based on a survey conducted by the author, which included site visits to several universities, telephone interviews with faculty members at other universities, and a search of the aviation human factors research literature.

Dismukes, R. Key

1994-01-01

241

Come Fly with Me! Exploring Science 7-9 through Aviation/Aerospace Concepts.  

ERIC Educational Resources Information Center

This guide contains 67 activities dealing with various aerospace/aviation education concepts. The activities are presented in units related to physical science, earth science, and life science. In addition, there is a section related to student involvement in the space shuttle programs. The physical science unit (activities 1-23) focuses on the…

Housel, David C.; Housel, Doreen K. M.

242

Orientation and disorientation in aviation  

PubMed Central

On the ground, the essential requirement to remain orientated is a largely unconscious activity. In flight, orientation requires a conscious effort by the pilot particularly when the visual environment becomes degraded and a deceptive force environment becomes the frame of reference. Furthermore, an unusual force environment can determine the apparent location of objects within a limited visual scene, sometimes with disastrous consequences. This review outlines the sources of pilot disorientation that arise from the visual and force environment of flight and their interaction. It challenges the value of the traditional illusion-based approach to the subject both to aircrew and to surveys of disorientation. Also, it questions the emphasis on the shortcomings of vestibular function as the physiological basis for disorientation. While military accidents from all causes have shown a decline, there has been no corresponding reduction in accidents involving disorientation, 85% of which are the results of unrecognised disorientation. This finding has implications for the way in which pilots are taught about disorientation in the interest of enhanced flight safety. It argues for a greater use of conventional fixed base simulators to create disorientating scenarios rather than complex motion devices to create unusual sensations. PMID:23849216

2013-01-01

243

Aviation Frontiers: On-Demand Aircraft  

NASA Technical Reports Server (NTRS)

Throughout the 20th Century, NASA has defined the forefront of aeronautical technology, and the aviation industry owes much of its prosperity to this knowledge and technology. In recent decades, centralized aeronautics has become a mature discipline, which raises questions concerning the future aviation innovation frontiers. Three transformational aviation capabilities, bounded together by the development of a Free Flight airspace management system, have the potential to transform 21st Century society as profoundly as civil aviation transformed the 20th Century. These mobility breakthroughs will re-establish environmental sustainable centralized aviation, while opening up latent markets for civil distributed sensing and on-demand rural and regional transportation. Of these three transformations, on-demand aviation has the potential to have the largest market and productivity improvement to society. The information system revolution over the past 20 years shows that vehicles lead, and the interconnecting infrastructure to make them more effective follows; that is, unless on-demand aircraft are pioneered, a distributed Air Traffic Control system will likely never be established. There is no single technology long-pole that will enable on-demand vehicle solutions. However, fully digital aircraft that include electric propulsion has the potential to be a multi-disciplinary initiator of solid state technologies that can provide order of magnitude improvements in the ease of use, safety/reliability, community and environmental friendliness, and affordability.

Moore, Mark D.

2010-01-01

244

AWE: Aviation Weather Data Visualization Environment  

NASA Technical Reports Server (NTRS)

Weather is one of the major causes of aviation accidents. General aviation (GA) flights account for 92% of all the aviation accidents, In spite of all the official and unofficial sources of weather visualization tools available to pilots, there is an urgent need for visualizing several weather related data tailored for general aviation pilots. Our system, Aviation Weather Data Visualization Environment AWE), presents graphical displays of meteorological observations, terminal area forecasts, and winds aloft forecasts onto a cartographic grid specific to the pilot's area of interest. Decisions regarding the graphical display and design are made based on careful consideration of user needs. Integral visual display of these elements of weather reports is designed for the use of GA pilots as a weather briefing and route selection tool. AWE provides linking of the weather information to the flight's path and schedule. The pilot can interact with the system to obtain aviation-specific weather for the entire area or for his specific route to explore what-if scenarios and make "go/no-go" decisions. The system, as evaluated by some pilots at NASA Ames Research Center, was found to be useful.

Spirkovska, Lilly; Lodha, Suresh K.; Norvig, Peter (Technical Monitor)

2000-01-01

245

A Survey of Computing Activities in Secondary Schools. Final Report.  

ERIC Educational Resources Information Center

Results of a survey of secondary schools indicate that the use of computers, especially for instructional purposes, has grown rapidly. However, the diversity of use is still limited. The most prevalent applications are problem solving and Electronic Data Processing (EDP) skills training. The major emphasis of computer application is on teaching…

Korotkin, Arthur L.; And Others

246

U.S. Geological Survey activities in New York, 1979  

USGS Publications Warehouse

This report describes the work of the U.S. Geological Survey and summarizes projects conducted in New York during 1979. Many of these projects are continuing into the 1980's. The major programs provide basic scientific information concerning water, land, and mineral resources. The Survey also supervises the exploration for mineral fuels on leased outer continental shelf lands. The programs are: (1) Water resources investigations--These encompass (a) statewide networks of measurement stations that provide continuous records of streamflow, groundwater levels, water quality, and sediment discharge, and (b) projects to study local or regional water problems as well as critical water problems of national scope or interest. (2) Geologic and mineral resource surveys and mapping--These studies focus on geologic, mineral, and energy-resources investigations both on land and offshore. (3) Conservation of lands and mineral resources--These studies include the classification and evaluation of mineral resources on the outer continental shelf. (4) Topographic surveys and mapping--These studies include quadrangle, small-scale, and special mapping. (5) Land information and analysis--These studies focus on the interpretation and application of earth-science and related information to multi-disciplinary land-resource and environmental-impact problems. (USGS)

Finch, Anne; Gori, Paula

1979-01-01

247

49 CFR 1511.5 - Imposition of Aviation Security Infrastructure Fees.  

Code of Federal Regulations, 2014 CFR

... Imposition of Aviation Security Infrastructure Fees. 1511.5 Section 1511...PROCEDURAL RULES AVIATION SECURITY INFRASTRUCTURE FEE § 1511.5 Imposition of Aviation Security Infrastructure Fees. (a) Effective...

2014-10-01

248

49 CFR 1511.5 - Imposition of Aviation Security Infrastructure Fees.  

Code of Federal Regulations, 2013 CFR

... Imposition of Aviation Security Infrastructure Fees. 1511.5 Section 1511...PROCEDURAL RULES AVIATION SECURITY INFRASTRUCTURE FEE § 1511.5 Imposition of Aviation Security Infrastructure Fees. (a) Effective...

2013-10-01

249

49 CFR 1511.15 - Cessation of the Aviation Security Infrastructure Fee.  

Code of Federal Regulations, 2014 CFR

...Cessation of the Aviation Security Infrastructure Fee. 1511.15 Section 1511...PROCEDURAL RULES AVIATION SECURITY INFRASTRUCTURE FEE § 1511.15 Cessation of the Aviation Security Infrastructure Fee....

2014-10-01

250

49 CFR 1511.5 - Imposition of Aviation Security Infrastructure Fees.  

Code of Federal Regulations, 2010 CFR

... Imposition of Aviation Security Infrastructure Fees. 1511.5 Section 1511...PROCEDURAL RULES AVIATION SECURITY INFRASTRUCTURE FEE § 1511.5 Imposition of Aviation Security Infrastructure Fees. (a) Effective...

2010-10-01

251

49 CFR 1511.5 - Imposition of Aviation Security Infrastructure Fees.  

Code of Federal Regulations, 2011 CFR

... Imposition of Aviation Security Infrastructure Fees. 1511.5 Section 1511...PROCEDURAL RULES AVIATION SECURITY INFRASTRUCTURE FEE § 1511.5 Imposition of Aviation Security Infrastructure Fees. (a) Effective...

2011-10-01

252

49 CFR 1511.5 - Imposition of Aviation Security Infrastructure Fees.  

Code of Federal Regulations, 2012 CFR

... Imposition of Aviation Security Infrastructure Fees. 1511.5 Section 1511...PROCEDURAL RULES AVIATION SECURITY INFRASTRUCTURE FEE § 1511.5 Imposition of Aviation Security Infrastructure Fees. (a) Effective...

2012-10-01

253

78 FR 3403 - Agency Information Collection Activities: Financial Education Content Needs Survey  

Federal Register 2010, 2011, 2012, 2013, 2014

...Agency Information Collection Activities: Financial Education Content Needs Survey AGENCY: Commodity Futures Trading Commission...inquire as to how often the respondents would like to receive content from CFTC, the format in which the respondents would...

2013-01-16

254

78 FR 65661 - Agency Information Collection Activities; Proposed Collection; Comment Request; Food Safety Survey  

Federal Register 2010, 2011, 2012, 2013, 2014

...DEPARTMENT OF HEALTH AND HUMAN SERVICES Food and Drug Administration [Docket No. FDA-2013-N-1161...Activities; Proposed Collection; Comment Request; Food Safety Survey AGENCY: Food and Drug Administration, HHS. ACTION:...

2013-11-01

255

How Does Active Parental Consent Influence the Findings of Drug-Use Surveys in Schools?  

ERIC Educational Resources Information Center

This study examines the impact of passive and active parental consent procedures on the type of adolescents participating in a school-based survey examining substance use. Schools recruited from a random sample of metropolitan schools were assigned to passive or active parental consent condition. Results showed that participation rates in active

White, Victoria M.; Hill, David J.; Effendi, Yuksel

2004-01-01

256

Professional Learning Activities in Context: A Statewide Survey of Middle School Mathematics Teachers  

ERIC Educational Resources Information Center

Based on a statewide survey of professional learning activities among 577 middle school mathematics teachers in Missouri, this study examined two questions: 1) What professional learning activities do middle school math teachers participate in and how much time do they spend in these activities?, and 2) How are teacher qualifications and…

Akiba, Motoko

2012-01-01

257

A Survey of Non-Resident Lending and Borrowing Activity in Massachusetts.  

ERIC Educational Resources Information Center

This survey presenting raw data for the planning of resource sharing and other cooperative library activities in Massachusetts focuses on the borrowing and lending characteristics of libraries with regard to nonresident borrowing activity. It is intended to provide up-to-date estimates of such activity, formulate long term solutions to fiscal…

Piggford, Roland R.; And Others

258

NASA aviation safety reporting system  

NASA Technical Reports Server (NTRS)

A sample of reports relating to operations during winter weather is presented. Several reports involving problems of judgment and decisionmaking have been selected from the numerous reports representative of this area. Problems related to aeronautical charts are discussed in a number of reports. An analytic study of reports involving potential conflicts in the immediate vicinity of uncontrolled airports was performed; the results are discussed in this report. It was found that in three-fourths of 127 such conflicts, neither pilot, or only one of the pilots, was communicating position and intentions on the appropriate frequency. The importance of providing aural transfer of information, as a backup to the visual see and avoid mode of information transfer is discussed. It was also found that a large fraction of pilots involved in potential conflicts on final approach had executed straight-in approaches, rather than the recommended traffic pattern entries, prior to the conflicts. A selection of alert bulletins and responses to them by various segments of the aviation community is presented.

1978-01-01

259

Aviation Safety Program The Aviation Safety Program (AvSP), part of  

E-print Network

inves- tigates improvements to increase the inherent safety of aircraft systems and structures, ways and their effects on composite materials used in a variety of aircraft structures. System-Wide Safety and AssuranceAviation Safety Program The Aviation Safety Program (AvSP), part of NASA's Aeronautics Research

260

Emerging trends in alternative aviation fuels  

NASA Astrophysics Data System (ADS)

The days of petroleum-based aviation fuels are numbered. New regulations to be set in place in the coming years will force current fuels to be phased out in favor of cleaner fuels with less toxic emissions. The alternative fuel industry has already taken its foothold in other modes of transportation, and aviation will soon follow suit. Many companies have cropped up over the last decade, and a few have been around longer, that work hard to develop the alternative aviation fuels of the future. It is important, however, for the aviation community to know what to expect and when to expect it concerning alternative fuels. This study investigates where various companies in the alternative aviation fuel industry currently stand in their development and production processes, and how their products will affect aircraft owners and operators. By interviewing representatives from these companies and analyzing their responses to identify trends, an educated prediction can be made about where the industry is headed and when the aviation community can expect these fuel to be available. The findings of this study indicate that many companies are still in their developmental stages, with a few notable outliers, and that most of these companies expect to see production of their product by 2017. Also, the fuel manufacturers are dealing with all the legal hurdles regarding alternative fuels, so little to no effort will be required on the part of the consumer. These findings, along with their analysis, will enable the aviation community to make educated decisions concerning fuel and their aircraft, as well and do their part to help these beneficial fuels get to market.

Corbett, Cody

261

SURVEY  

Microsoft Academic Search

ABSTRACTBackground: Experiencing ethical problems requires both ethically problematic situations and ethical sensitivity. Ethically problematic treatment decisions are distressing and might reflect health care quality problems. Whether all physicians actually experience ethical problems, what these problems are and how they vary according to physician age, gender and work sector are largely unknown.Methods: A mail survey of all non-retired physicians licensed in

SAMULI I. SAARNI; PIITU PARMANNE; RITVA HALILA

2008-01-01

262

Surveys  

Cancer.gov

Behavioral Risk Factor Surveillance System (BRFSS) The world's largest, on-going telephone health survey system, tracking health conditions and risk behaviors in the United States yearly since 1984. Currently, data are collected monthly in all 50 states, the District of Columbia, Puerto Rico, the U.S. Virgin Islands, and Guam.

263

Come Fly with Me! Exploring Science K-6 through Aviation/Aerospace Concepts.  

ERIC Educational Resources Information Center

This guide contains 95 activities dealing with various aerospace/aviation education concepts. The activities are presented in units for kindergarten through sixth grade organized around a central theme at each grade level. The themes follow a sequence from grade to grade. Beginning with the introduction of basic inquiry process skills in…

Housel, David C.; Housel, Doreen K. M.

264

Aviation Safety Reporting System: Process and Procedures  

NASA Technical Reports Server (NTRS)

The Aviation Safety Reporting System (ASRS) was established in 1976 under an agreement between the Federal Aviation Administration (FAA) and the National Aeronautics and Space Administration (NASA). This cooperative safety program invites pilots, air traffic controllers, flight attendants, maintenance personnel, and others to voluntarily report to NASA any aviation incident or safety hazard. The FAA provides most of the program funding. NASA administers the program, sets its policies in consultation with the FAA and aviation community, and receives the reports submitted to the program. The FAA offers those who use the ASRS program two important reporting guarantees: confidentiality and limited immunity. Reports sent to ASRS are held in strict confidence. More than 350,000 reports have been submitted since the program's beginning without a single reporter's identity being revealed. ASRS removes all personal names and other potentially identifying information before entering reports into its database. This system is a very successful, proof-of-concept for gathering safety data in order to provide timely information about safety issues. The ASRS information is crucial to aviation safety efforts both nationally and internationally. It can be utilized as the first step in safety by providing the direction and content to informed policies, procedures, and research, especially human factors. The ASRS process and procedures will be presented as one model of safety reporting feedback systems.

Connell, Linda J.

1997-01-01

265

National General Aviation Design Competition Project Report  

NASA Technical Reports Server (NTRS)

This report summarizes the management of the National General Aviation Design Competition on behalf of NASA, the FAA and the Air Force by the Virginia Space Grant Consortium (VSGC) for the time period October 1, 1999 through September 30, 2000. This was the VSGC's sixth year of managing the Competition, which the Consortium originally designed, developed and implemented for NASA and the FAA. The seventh year of the Competition was announced in July 2000. Awards to winning university teams were presented at a ceremony held at AirVenture 2000, the Experimental Aircraft Association's Annual Convention and Fly-In at Oshkosh, WIS. NASA, FAA and AOPA administrators presented the awards. The competition calls for individuals or teams of undergraduate and graduate students from U.S. engineering schools to participate in a major national effort to rebuild the U.S. general aviation sector. For the purpose of the contest, General aviation aircraft are defined as fixed wing, single or dual engine (turbine or piston), single-pilot aircraft for 2-6 passengers. In addressing design challenges for a small aircraft transportation system, the competition seeks to raise student awareness of the importance of general aviation and to stimulate breakthroughs in technology and their application in the general aviation market. The Competition has two categories: Innovative Design, and Design It, Build It, Fly It. Awards were given in both categories for this reporting year.

2001-01-01

266

NASA Aviation Safety Reporting System (ASRS)  

NASA Technical Reports Server (NTRS)

The NASA Aviation Safety Reporting System (ASRS) collects, analyzes, and distributes de-identified safety information provided through confidentially submitted reports from frontline aviation personnel. Since its inception in 1976, the ASRS has collected over 900,000 reports and has never breached the identity of the people sharing their information about events or safety issues. From this volume of data, the ASRS has released over 5,500 aviation safety alerts concerning potential hazards and safety concerns. The ASRS processes these reports, evaluates the information, and provides de-identified report information through the online ASRS Database at http://asrs.arc.nasa.gov. The NASA ASRS is also a founding member of the International Confidential Aviation Safety Systems (ICASS) group which is a collection of other national aviation reporting systems throughout the world. The ASRS model has also been replicated for application to improving safety in railroad, medical, fire fighting, and other domains. This presentation \\vill discuss confidential, voluntary, and non-punitive reporting systems and their advantages in providing information for safety improvements.

Connell, Linda

2011-01-01

267

AWE: Aviation Weather Data Visualization Environment  

NASA Technical Reports Server (NTRS)

The two official sources for aviation weather reports both provide weather information to a pilot in a textual format. A number of systems have recently become available to help pilots with the visualization task by providing much of the data graphically. However, two types of aviation weather data are still not being presented graphically. These are airport-specific current weather reports (known as meteorological observations, or METARs) and forecast weather reports (known as terminal area forecasts, or TAFs). Our system, Aviation Weather Environment (AWE), presents intuitive graphical displays for both METARs and TAFs, as well as winds aloft forecasts. We start with a computer-generated textual aviation weather briefing. We map this briefing onto a cartographic grid specific to the pilot's area of interest. The pilot is able to obtain aviation-specific weather for the entire area or for his specific route. The route, altitude, true airspeed, and proposed departure time can each be modified in AWE. Integral visual display of these three elements of weather reports makes AWE a useful planning tool, as well as a weather briefing tool.

Spirkovska, Lilly; Lodha, Suresh K.

2000-01-01

268

Current and historical trends in general aviation in the United States  

E-print Network

General aviation (GA) is an important component of aviation in the United States. In 2011, general aviation and air taxi operations represented 63% of all towered operations in the United States, while commercial aviation ...

Shetty, Kamala Irene

2012-01-01

269

Dose-response relationship between physical activity and mental health: the Scottish Health Survey  

Microsoft Academic Search

Objectives:Regular physical activity is thought to be associated with better mental health, although there is a lack of consensus regarding the optimal amount and type of activity to achieve these benefits. The association between mental health and physical activity behaviours was examined among a representative sample of men and women from the Scottish Health Surveys.Methods:Self-reported physical activity was measured and

M Hamer; E Stamatakis; A Steptoe

2009-01-01

270

Active Transportation to School: Findings from a National Survey  

ERIC Educational Resources Information Center

In the past, active transportation to school offered an important source of daily physical activity for youth; more recently, however, factors related to distance, safety, or physical or social environments may have contributed to the proportion of children who travel to school by motorized vehicle. The authors examine the characteristics of…

Fulton, Janet E.; Shisler, Jessica L.; Yore, Michelle M.; Caspersen, Carl J.

2005-01-01

271

AH-64 IHADSS aviator vision experiences in Operation Iraqi Freedom  

NASA Astrophysics Data System (ADS)

Forty AH-64 Apache aviators representing a total of 8564 flight hours and 2260 combat hours during Operation Iraqi Freedom and its aftermath were surveyed for their visual experiences with the AH-64's monocular Integrated Helmet and Display Sighting System (IHADSS) helmet-mounted display in a combat environment. A major objective of this study was to determine if the frequencies of reports of visual complaints and illusions reported in the previous studies, addressing mostly benign training environments, differ in the more stressful combat environments. The most frequently reported visual complaints, both while and after flying, were visual discomfort and headache, which is consistent with previous studies. Frequencies of complaints after flying in the current study were numerically lower for all complaint types, but differences from previous studies are statistically significant only for visual discomfort and disorientation (vertigo). With the exception of "brownout/whiteout," reports of degraded visual cues in the current study were numerically lower for all types, but statistically significant only for impaired depth perception, decreased field of view, and inadvertent instrumental meteorological conditions. This study also found statistically lower reports of all static and dynamic illusions (with one exception, disorientation). This important finding is attributed to the generally flat and featureless geography present in a large portion of the Iraqi theater and to the shift in the way that the aviators use the two disparate visual inputs presented by the IHADSS monocular design (i.e., greater use of both eyes as opposed to concentrating primarily on display imagery).

Hiatt, Keith L.; Rash, Clarence E.; Harris, Eric S.; McGilberry, William H.

2004-09-01

272

Aviation: Front Sand Dunes to Sonic Booms  

NSDL National Science Digital Library

This site was created by the National Park Service, United States Air Force, and others to celebrate the Centennial of Flight - the 100th anniversary of the first successful air flight by the Wright brothers on December 17, 1903. Here you can find photographs, articles, and videos that detail the history of civilian and military aviation in the United States in the last hundred years, and information on how aviation technology has shaped current American culture. Using the �Map� feature, users can also read about the historical contributions of each state to this technology, and the �List of Sites� link will take visitors to the general database of articles within the site. This resource would be an important supplement to any course syllabus on the history of aviation and air power for its thorough coverage and intriguing videos and images.

273

NASA's aviation safety research and technology program  

NASA Technical Reports Server (NTRS)

Aviation safety is challenged by the practical necessity of compromising inherent factors of design, environment, and operation. If accidents are to be avoided these factors must be controlled to a degree not often required by other transport modes. The operational problems which challenge safety seem to occur most often in the interfaces within and between the design, the environment, and operations where mismatches occur due to ignorance or lack of sufficient understanding of these interactions. Under this report the following topics are summarized: (1) The nature of operating problems, (2) NASA aviation safety research, (3) clear air turbulence characterization and prediction, (4) CAT detection, (5) Measurement of Atmospheric Turbulence (MAT) Program, (6) Lightning, (7) Thunderstorm gust fronts, (8) Aircraft ground operating problems, (9) Aircraft fire technology, (10) Crashworthiness research, (11) Aircraft wake vortex hazard research, and (12) Aviation safety reporting system.

Fichtl, G. H.

1977-01-01

274

Finding Autonomy in Activity: Development and Validation of a Democratic Classroom Survey  

ERIC Educational Resources Information Center

This paper developed a Democratic Classroom Survey to measure students' perceived democratic environment of the classroom. Perceived democratic environment is one of the most important variables for understanding classroom activity and indeed any type of group activity, but actually measuring perceptions in an objective manner has been…

Hur, Eun Hye; Glassman, Michael; Kim, Yunhwan

2013-01-01

275

"Activities of Older Adults" Survey: Tapping into Student Views of the Elderly  

ERIC Educational Resources Information Center

This article describes an exercise used in a life span developmental psychology course to tap into undergraduates' perceptions of activities of the elderly. Students were asked to generate items to be included in a hypothetical Activities of Older Adults survey (to be administered to people 65 years and older). Responses from 1,340 students over a…

Wurtele, Sandy K.

2009-01-01

276

A survey of online activity recognition using mobile phones.  

PubMed

Physical activity recognition using embedded sensors has enabled many context-aware applications in different areas, such as healthcare. Initially, one or more dedicated wearable sensors were used for such applications. However, recently, many researchers started using mobile phones for this purpose, since these ubiquitous devices are equipped with various sensors, ranging from accelerometers to magnetic field sensors. In most of the current studies, sensor data collected for activity recognition are analyzed offline using machine learning tools. However, there is now a trend towards implementing activity recognition systems on these devices in an online manner, since modern mobile phones have become more powerful in terms of available resources, such as CPU, memory and battery. The research on offline activity recognition has been reviewed in several earlier studies in detail. However, work done on online activity recognition is still in its infancy and is yet to be reviewed. In this paper, we review the studies done so far that implement activity recognition systems on mobile phones and use only their on-board sensors. We discuss various aspects of these studies. Moreover, we discuss their limitations and present various recommendations for future research. PMID:25608213

Shoaib, Muhammad; Bosch, Stephan; Incel, Ozlem Durmaz; Scholten, Hans; Havinga, Paul J M

2015-01-01

277

A Survey of Online Activity Recognition Using Mobile Phones  

PubMed Central

Physical activity recognition using embedded sensors has enabled many context-aware applications in different areas, such as healthcare. Initially, one or more dedicated wearable sensors were used for such applications. However, recently, many researchers started using mobile phones for this purpose, since these ubiquitous devices are equipped with various sensors, ranging from accelerometers to magnetic field sensors. In most of the current studies, sensor data collected for activity recognition are analyzed offline using machine learning tools. However, there is now a trend towards implementing activity recognition systems on these devices in an online manner, since modern mobile phones have become more powerful in terms of available resources, such as CPU, memory and battery. The research on offline activity recognition has been reviewed in several earlier studies in detail. However, work done on online activity recognition is still in its infancy and is yet to be reviewed. In this paper, we review the studies done so far that implement activity recognition systems on mobile phones and use only their on-board sensors. We discuss various aspects of these studies. Moreover, we discuss their limitations and present various recommendations for future research. PMID:25608213

Shoaib, Muhammad; Bosch, Stephan; Incel, Ozlem Durmaz; Scholten, Hans; Havinga, Paul J.M.

2015-01-01

278

An assessment of the health implications of aviation emissions regulations  

E-print Network

An exploration of the health implications of aviation emissions regulations is made by assessing the results of a study of aviation's effects on United States air quality mandated by the Energy Policy Act of 2005. The ...

Sequeira, Christopher J

2008-01-01

279

76 FR 72967 - Aviation Security Advisory Committee (ASAC) Meeting  

Federal Register 2010, 2011, 2012, 2013, 2014

...By Laws (3) Overview of aviation security (4) Presentations: a. Risk-based screening b. General Aviation airport security guidelines c. Air Cargo security update (5) Working group formation; areas for consideration (6) Public...

2011-11-28

280

The air quality and health impacts of aviation in Asia  

E-print Network

Aviation in Asia is growing more rapidly than other regions around the world. Adverse health impacts of aviation are linked to an increase in the concentration of particulate matter smaller than 2.5 [mu]m in diameter ...

Lee, In Hwan, S.M. Massachusetts Institute of Technology

2012-01-01

281

ICAO Assistance to Civil Aviation in the Developing World.  

ERIC Educational Resources Information Center

Describes the cost advantages of air transportation over road, rail, and river transportation in many circumstances which prevail today in developing countries. Presents accounts of International Civil Aviation Organization's (ICAO's) efforts supporting civil aviation programs in these countries. (DS)

Vivian, Jack

1981-01-01

282

47 CFR 17.23 - Aviation Red Obstruction Lighting [Reserved  

Code of Federal Regulations, 2010 CFR

...Telecommunication 1 2010-10-01 2010-10-01 false Aviation Red Obstruction Lighting [Reserved] 17.23 Section 17.23...1999, as amended at 69 FR 18803, Apr. 9, 2004] Aviation Red Obstruction Lighting...

2010-10-01

283

Future trends in local air quality impacts of aviation  

E-print Network

The International Civil Aviation Organization is considering the use of cost-benefit analyses to estimate interdependencies between the industry costs and the major environmental impacts in policy-making for aviation. To ...

Rojo, Julien Joseph

2007-01-01

284

A proposed system for aviation noise measurement and control  

E-print Network

This report reviews previous work on various measures for aviation noise, and proposes a completely new system for aviation noise measurement and control compatible with real time, operational noise monitoring hardware. ...

Simpson, R. W.

1973-01-01

285

47 CFR 17.23 - Aviation Red Obstruction Lighting [Reserved  

Code of Federal Regulations, 2013 CFR

...Telecommunication 1 2013-10-01 2013-10-01 false Aviation Red Obstruction Lighting [Reserved] 17.23 Section 17.23...1999, as amended at 69 FR 18803, Apr. 9, 2004] Aviation Red Obstruction Lighting...

2013-10-01

286

47 CFR 17.23 - Aviation Red Obstruction Lighting [Reserved  

Code of Federal Regulations, 2012 CFR

...Telecommunication 1 2012-10-01 2012-10-01 false Aviation Red Obstruction Lighting [Reserved] 17.23 Section 17.23...1999, as amended at 69 FR 18803, Apr. 9, 2004] Aviation Red Obstruction Lighting...

2012-10-01

287

47 CFR 17.23 - Aviation Red Obstruction Lighting [Reserved  

Code of Federal Regulations, 2014 CFR

...Telecommunication 1 2014-10-01 2014-10-01 false Aviation Red Obstruction Lighting [Reserved] 17.23 Section 17.23...other specifications provided by the Commission. Aviation Red Obstruction Lighting [Reserved] Effective Date Note:...

2014-10-01

288

Alternative fuels : how can aviation cross the "Valley of Death"  

E-print Network

Aviation has used petroleum-derived fuels for over 100 years. With the rapidly rising price of oil and concerns about supply, the military and the commercial airlines are fostering the development of an alternative aviation ...

Harrison, William E. (William Elton)

2008-01-01

289

An acoustic sensitivity study of general aviation propellers  

NASA Technical Reports Server (NTRS)

This paper describes the results of a study in which a systematic approach has been taken in studying the effect of selected propeller parameters on the character and magnitude of propeller noise. Four general aviation aircraft were chosen, i.e., a Cessna 172, Cessna 210, Cessna 441, and a 19 passenger commuter concept, to provide a range in flight velocity, engine horsepower, and gross weight. The propeller parameters selected for examination consisted of number of blades, rpm reduction, thickness/chord reduction, activity factor reduction, proplets, airfoil improvement, sweep, position of maximum blade loading, and diameter reduction.

Korkan, K. D.; Gregorek, G. M.; Keiter, I.

1980-01-01

290

Aeronautics and Aviation Science: Careers and Opportunities Project  

NASA Technical Reports Server (NTRS)

The National Aeronautics and Space Administration funded project, Aeronautics and Aviation Science: Careers and Opportunities has been in operation since July, 1995. This project operated as a collaboration with Massachusetts Corporation for Educational Telecommunications, the Federal Aviation Administration, Bridgewater State College and four targeted "core sites" in the greater Boston area. In its first and second years, a video series on aeronautics and aviation science was developed and broadcast via "live, interactive" satellite feed. Accompanying teacher and student supplementary instructional materials for grades 6-9 were produced and disseminated by the Massachusetts Corporation for Educational Telecommunications (MCET). In the MCET grant application it states that project Take Off! in its initial phase would recruit and train teachers at "core" sites in the greater Boston area, as well as opening participation to other on-line users of MCET's satellite feeds. "Core site" classrooms would become equipped so that teachers and students might become engaged in an interactive format which aimed at not only involving the students during the "live" broadcast of the instructional video series, but which would encourage participation in electronic information gathering and sharing among participants. As a Take Off! project goal, four schools with a higher than average proportion of minority and underrepresented youth were invited to become involved with the project to give these students the opportunity to consider career exploration and development in the field of science aviation and aeronautics. The four sites chosen to participate in this project were: East Boston High School, Dorchester High School, Randolph Junior-Senior High School and Malden High School. In year 3 Dorchester was unable to continue to fully participate and exited out. Danvers was added to the "core site" list in year 3. In consideration of Goals 2000, the National Science Foundation standards for quality of teaching, and an educational agenda that promotes high standards for all students, Aeronautics and Aviation Science: Careers and Opportunities had as its aim to deliver products to schools, both in and outside the project sites, which attempt to incorporate multi-disciplined approaches in the presentation of a curriculum which would be appropriate in any classroom, while also aiming to appeal to young women and minorities. The curriculum was developed to provide students with fundamentals of aeronautics and aviation science. The curriculum also encouraged involving students and teachers in research projects, and further information gathering via electronic bulletin boards and internet capabilities. Though not entirely prescriptive, the curriculum was designed to guide teachers through recommended activities to supplement MCET's live telecast video presentations. Classroom teachers were encouraged to invite local pilots, meteorologists, and others from the field of aviation and aeronautics, particularly women and minorities to visit schools and to field questions from the students.

Texter, P. Cardie

1998-01-01

291

National estimates of teenage sexual activity: Evaluating the comparability of three national surveys  

Microsoft Academic Search

In this article, we examine the reliability with which teenage sexual activity was reported in three recent national surveys.\\u000a Unlike other study-effects analyses of objective demographic phenomena such as births and marriages, ours focuses on a more\\u000a sensitive question—age at first intercourse as reported in three very different surveys. Specifically, we compare reports\\u000a for the 1959–1963 cohort in the 1979

Joan R. Kahn; William D. Kalsbeek; Sandra L. Hofferth

1988-01-01

292

Application of propfan propulsion to general aviation  

NASA Technical Reports Server (NTRS)

Recent studies of advanced propfan propulsion systems have shown significant reductions in fuel consumption of 15-30 percent for transport class aircraft. This paper presents the results of a study which examined applying propfan propulsion to General Aviation class aircraft to determine if similar improvements could be achieved for business aircraft. In addition to the potential performance gains, this paper also addresses the cost aspects of propfan propulsion on General Aviation aircraft emphasizing the significant impact that the cost of capital and tax aspects have on determining the total cost of operation for business aircraft.

Awker, R. W.

1986-01-01

293

Meteorological and Environmental Inputs to Aviation Systems  

NASA Technical Reports Server (NTRS)

Reports on aviation meteorology, most of them informal, are presented by representatives of the National Weather Service, the Bracknell (England) Meteorological Office, the NOAA Wave Propagation Lab., the Fleet Numerical Oceanography Center, and the Aircraft Owners and Pilots Association. Additional presentations are included on aircraft/lidar turbulence comparison, lightning detection and locating systems, objective detection and forecasting of clear air turbulence, comparative verification between the Generalized Exponential Markov (GEM) Model and official aviation terminal forecasts, the evaluation of the Prototype Regional Observation and Forecast System (PROFS) mesoscale weather products, and the FAA/MIT Lincoln Lab. Doppler Weather Radar Program.

Camp, Dennis W. (editor); Frost, Walter (editor)

1988-01-01

294

Aviation Safety/Automation Program Conference  

NASA Technical Reports Server (NTRS)

The Aviation Safety/Automation Program Conference - 1989 was sponsored by the NASA Langley Research Center on 11 to 12 October 1989. The conference, held at the Sheraton Beach Inn and Conference Center, Virginia Beach, Virginia, was chaired by Samuel A. Morello. The primary objective of the conference was to ensure effective communication and technology transfer by providing a forum for technical interchange of current operational problems and program results to date. The Aviation Safety/Automation Program has as its primary goal to improve the safety of the national airspace system through the development and integration of human-centered automation technologies for aircraft crews and air traffic controllers.

Morello, Samuel A. (compiler)

1990-01-01

295

Runway Incursion Prevention for General Aviation Operations  

NASA Technical Reports Server (NTRS)

A Runway Incursion Prevention System (RIPS) and additional incursion detection algorithm were adapted for general aviation operations and evaluated in a simulation study at the National Aeronautics and Space Administration (NASA) Langley Research Center (LaRC) in the fall of 2005. RIPS has been designed to enhance surface situation awareness and provide cockpit alerts of potential runway conflicts in order to prevent runway incidents while also improving operational capability. The purpose of the study was to evaluate the airborne incursion detection algorithms and associated alerting and airport surface display concepts for general aviation operations. This paper gives an overview of the system, simulation study, and test results.

Jones, Denise R.; Prinzel, Lawrence J., III

2006-01-01

296

General aviation air traffic pattern safety analysis  

NASA Technical Reports Server (NTRS)

A concept is described for evaluating the general aviation mid-air collision hazard in uncontrolled terminal airspace. Three-dimensional traffic pattern measurements were conducted at uncontrolled and controlled airports. Computer programs for data reduction, storage retrieval and statistical analysis have been developed. Initial general aviation air traffic pattern characteristics are presented. These preliminary results indicate that patterns are highly divergent from the expected standard pattern, and that pattern procedures observed can affect the ability of pilots to see and avoid each other.

Parker, L. C.

1973-01-01

297

Computer technology forecast study for general aviation  

NASA Technical Reports Server (NTRS)

A multi-year, multi-faceted program is underway to investigate and develop potential improvements in airframes, engines, and avionics for general aviation aircraft. The objective of this study was to assemble information that will allow the government to assess the trends in computer and computer/operator interface technology that may have application to general aviation in the 1980's and beyond. The current state of the art of computer hardware is assessed, technical developments in computer hardware are predicted, and nonaviation large volume users of computer hardware are identified.

Seacord, C. L.; Vaughn, D.

1976-01-01

298

Rating hydrogen as a potential aviation fuel  

NASA Technical Reports Server (NTRS)

The viability of liquid hydrogen, liquid methane, and synthetic aviation kerosene as future alternate fuels for transport aircraft is analyzed, and the results of a comparative assessment are given in terms of cost, energy resource utilization, areas of fuel production, transmission airport facilities, and ultimate use in the aircraft. Important safety (fires) and some environmental aspects (CO2 balance) are also described. It is concluded that fuel price estimates indicate the price of synthetic aviation kerosene (synjet) would be approximately half of the price calculated for liquid hydrogen and somewhat less than that of liquid methane, with synjet from oil shale reported to be the least expensive.

Witcofski, R. D.

1980-01-01

299

Survey of Some Actinomycetales for ?-Galactosidase Activity1  

PubMed Central

The enzyme ?-galactosidase offers potential to (i) eliminate possibly the flatus-inducing factor(s) in edible beans, (ii) eliminate raffinose during beet-sugar processing, and (iii) determine raffinose analytically. Accordingly, 20 genera of the order Actinomycetales Buchanan 1917 were tested for evidence of ?-galactosidase activity. Test filtrates were prepared with a medium containing D-galactose and soybean meal. Enzyme activity was demonstrated through cellulose thin-layer chromatography. Of 123 strains tested, 28 produced extracellular ?-galactosidase. Almost all were streptomycetes. Members of the genera Actinoplanes Couch 1950, Micromonospora ?Orskov 1923, and Promicromonospora Krasil'nikov et al. 1961 also exhibited ?-galactosidase activity. Additional tests led to the selection of five strains whose filtrates degraded melibiose, raffinose, and stachyose but not lactose and sucrose. Tests also were made with several soybean preparations. PMID:5392462

Lyons, A. J.; Pridham, T. G.; Hesseltine, C. W.

1969-01-01

300

14 CFR Special Federal Aviation... - Process for Requesting Waiver of Mandatory Separation Age for a Federal Aviation Administration...  

Code of Federal Regulations, 2012 CFR

...Federal Aviation Administration Air Traffic Control Specialist In Flight Service...and the David J. Hurley Air Traffic Control System Command Center Federal...Federal Aviation Administration Air Traffic Control Specialist In Flight...

2012-01-01

301

14 CFR Special Federal Aviation... - Process for Requesting Waiver of Mandatory Separation Age for a Federal Aviation Administration...  

Code of Federal Regulations, 2013 CFR

...Federal Aviation Administration Air Traffic Control Specialist In Flight Service...and the David J. Hurley Air Traffic Control System Command Center Federal...Federal Aviation Administration Air Traffic Control Specialist In Flight...

2013-01-01

302

14 CFR Special Federal Aviation... - Process for Requesting Waiver of Mandatory Separation Age for a Federal Aviation Administration...  

Code of Federal Regulations, 2014 CFR

...Federal Aviation Administration Air Traffic Control Specialist In Flight Service...and the David J. Hurley Air Traffic Control System Command Center Federal...Federal Aviation Administration Air Traffic Control Specialist In Flight...

2014-01-01

303

14 CFR Special Federal Aviation... - Process for Requesting Waiver of Mandatory Separation Age for a Federal Aviation Administration...  

Code of Federal Regulations, 2011 CFR

...Federal Aviation Administration Air Traffic Control Specialist In Flight Service...and the David J. Hurley Air Traffic Control System Command Center Federal...Federal Aviation Administration Air Traffic Control Specialist In Flight...

2011-01-01

304

Peer Ratings as Predictors of Success in Military Aviation.  

ERIC Educational Resources Information Center

Three experimental peer rating forms were developed for use in research in prediction of the aviation training performance criterion--completion/attrition--from the training program for Aviation Warrant Officer Candidates at the U.S. Army Helicopter School. This paper describes the construction of the ratings, the "Potential Aviator Rating" forms,…

Wahlberg, James L.; And Others

305

Aviation -- Where Career Opportunities are Bright, Counselor's Guide.  

ERIC Educational Resources Information Center

This aviation occupations guide is designed for use as a unit as well as in conjunction with an aviation careers package of material that contains a film strip and recording. Chapter One contains the script of the film strip, Aviation--Where Career Opportunities are Bright, and includes all photographs used in the film strip plus numerous…

Zaharevitz, Walter; Marshall, Jane N.

306

1990 Nationwide Truck Activity and Commodity Survey selected tabulations. Summary report  

SciTech Connect

The Nationwide Truck Activity and Commodity Survey (NTACS) provides detailed activity data for a sample of trucks covered in the 1987 Truck Inventory and Use Survey (TIUS) for days selected at random over a 12-month period ending in 1990. The NTACS was conducted by the US Bureau of the Census for the US Department of Transportation (DOT). A Public Use File for the NTACS was developed by Oak Ridge National Laboratory (ORNL) under a reimbursable agreement with the DOT. The content of the Public Use File and the detailed design of the NTACS are described in the ORNL Report {open_quotes}Technical Documentation for the 1990 Nationwide Truck Activity and Commodity Survey Public Use File{close_quotes}. (1992). ORNL Technical Report No. TM-12188, Oak Ridge National Laboratory, Oak Ridge, TN 37831. The main purpose of this summary report is to provide selected tables based on the public use file.

Not Available

1993-06-01

307

The UNO Aviation Monograph Series: Aviation Security: An Annotated Bibliography of Responses to the Gore Commission  

NASA Technical Reports Server (NTRS)

This monograph is a companion to UNOAI Monograph 96-2, "The Image of Airport Security: An Annotated Bibliography," compiled in June 1996. The White House Commission on Aviation Safety and Security, headed by Vice President Al Gore, was formed as a result of the TWA Flight 800 crash in August 1996. The Commission's final report included 31 recommendations addressed toward aviation security. The recommendations were cause for security issues to be revisited in the media and by the aviation industry. These developments necessitated the need for an updated bibliography to review the resulting literature. Many of the articles were written in response to the recommendations made by the Gore Commission. "Aviation Security: An Annotated Bibliography of Responses to the Gore Commission" is the result of this need.

Carrico, John S.; Schaaf, Michaela M.

1998-01-01

308

Light transport and general aviation aircraft icing research requirements  

NASA Technical Reports Server (NTRS)

A short term and a long term icing research and technology program plan was drafted for NASA LeRC based on 33 separate research items. The specific items listed resulted from a comprehensive literature search, organized and assisted by a computer management file and an industry/Government agency survey. Assessment of the current facilities and icing technology was accomplished by presenting summaries of ice sensitive components and protection methods; and assessments of penalty evaluation, the experimental data base, ice accretion prediction methods, research facilities, new protection methods, ice protection requirements, and icing instrumentation. The intent of the research plan was to determine what icing research NASA LeRC must do or sponsor to ultimately provide for increased utilization and safety of light transport and general aviation aircraft.

Breeze, R. K.; Clark, G. M.

1981-01-01

309

Proceedings of the Annual Nebraska Aviation Education Association Conference (1st, Omaha, Nebraska, January 1994). The UNO Aviation Monograph Series.  

ERIC Educational Resources Information Center

This collection of six papers constitutes the proceedings of the First Annual Conference of the Nebraska Aviation Education Association. These papers present many issues that the discipline of aviation is confronting, including those related to the aviation industry. The papers included are as follows: (1) "Using the DAT for Selection of Pilot…

Crehan, James E., Ed.

310

EU Accession and Civil Aviation Regimes: Malta and Cyprus as a Case Study  

NASA Technical Reports Server (NTRS)

Aviation deregulation is usually a challenging and demanding task and accession to the European Union requires that all candidate states should harmonize their legislation in the context of the European Common Aviation Area. Malta and Cyprus, the small Mediterranean island-states to join the EU in 2004, will have to abandon any protectionist policies in favour of their flag-carriers and let them survive in a liberal framework. The paper discusses the implications of this regime change for civil aviation in Malta and Cyprus and in addition to the airline industry, it examines the impacts on the complementary tourism sector. Unless carrying capacity limits are understood, the islands may become victims of successful airline liberalisation. The paper concludes by stressing the need for sustainable development and active policy making. Keywords: carrying capacity, Cyprus, air transport deregulation, Malta, tourism

Papatheodorou, Andreas; Busuttil, Louis

2003-01-01

311

Seismic Surveys Negatively Affect Humpback Whale Singing Activity off Northern Angola  

PubMed Central

Passive acoustic monitoring was used to document the presence of singing humpback whales off the coast of Northern Angola, and opportunistically test for the effect of seismic survey activity in the vicinity on the number of singing whales. Two Marine Autonomous Recording Units (MARUs) were deployed between March and December 2008 in the offshore environment. Song was first heard in mid June and continued through the remaining duration of the study. Seismic survey activity was heard regularly during two separate periods, consistently throughout July and intermittently in mid-October/November. Numbers of singers were counted during the first ten minutes of every hour for the period from 24 May to 1 December, and Generalized Additive Mixed Models (GAMMs) were used to assess the effect of survey day (seasonality), hour (diel variation), moon phase and received levels of seismic survey pulses (measured from a single pulse during each ten-minute sampled period) on singer number. Application of GAMMs indicated significant seasonal variation, which was the most pronounced effect when assessing the full dataset across the entire season (p<0.001); however seasonality almost entirely dropped out of top-ranked models when applied to a reduced dataset during the July period of seismic survey activity. Diel variation was significant in both the full and reduced datasets (from p<0.01 to p<0.05) and often included in the top-ranked models. The number of singers significantly decreased with increasing received level of seismic survey pulses (from p<0.01 to p<0.05); this explanatory variable was included among the top ranked models for one MARU in the full dataset and both MARUs in the reduced dataset. This suggests that the breeding display of humpback whales is disrupted by seismic survey activity, and thus merits further attention and study, and potentially conservation action in the case of sensitive breeding populations. PMID:24618836

Cerchio, Salvatore; Strindberg, Samantha; Collins, Tim; Bennett, Chanda; Rosenbaum, Howard

2014-01-01

312

Technical documentation for the 1990 Nationwide Truck Activity and Commodity Survey Public Use File  

SciTech Connect

The Nationwide Truck Activity and Commodity Survey (NTACS) provides detailed activity data for a sample of trucks covered in the 1987 Truck Inventory and Use Survey (TIUS) for days selected at random over a 12-month period ending in 1990. The NTACS was conducted by the US Bureau of the Census for the US Department of Transportation (DOT). A Public Use File for the NTACS was developed by Oak Ridge National Laboratory (ORNL) under a reimbursable agreement with the DOT. The content of the Public Use File and the design of the NTACS are described in this document.

Not Available

1992-09-01

313

Meteorological needs of the aviation community  

NASA Technical Reports Server (NTRS)

A study was conducted to determine the important meteorological needs of the aviation community and to recommend research in those areas judged most beneficial. The study was valuable in that it provided a comprehensive list of suspected meteorological deficiencies and ideas for research programs relative to these deficiencies. The list and ideas were generated from contacts with various pilots, air traffic controllers, and meteorologists.

Luers, J. K.

1977-01-01

314

Miramar College Program Evaluation: Aviation Maintenance.  

ERIC Educational Resources Information Center

Qualitative and quantitative data are presented in this evaluation of the curricular, personnel, and financial status of Miramar College's program in aviation maintenance. The report first provides the results of an interview with the program chairperson, which sought information on program objectives and goals and their determination, the extent…

Moriyama, Bruce; Brumley, Leslie

315

Situation Awareness and Workload in Aviation  

Microsoft Academic Search

A pilot faces special challenges imposed by the need to control a multivariate lagged system in a heterogeneous multitask environment. The time lags between critical variables require prediction in an uncertain world. The interrelated concepts of situation awareness and workload are central to aviation psychology. Three components of situation awareness are spatial awareness, system awareness, and task awareness. Each of

Christopher D. Wickens

2002-01-01

316

Pilots and Flight Engineers. Aviation Careers Series.  

ERIC Educational Resources Information Center

This booklet, one in a series on aviation careers, outlines the variety of careers available for airplane pilots and flight engineers. The first part of the booklet provides general information about careers for pilots and summarizes the information in a table. In the main part of the booklet, the following 11 job categories are outlined: flight…

Zaharevitz, Walter

317

Integrated decision support for aviation safety inspectors  

Microsoft Academic Search

This paper presents a systems viewpoint for developing an advanced decision support system for aircraft safety inspectors. Research results from a Federal Aviation Administration (FAA) sponsored project to use neural network and expert systems technology to analyze aircraft maintenance databases are summarized. One of the main objectives of this research is to define more refined “alert” indicators for national comparison

James T. Luxhøj; Trefor P. Williams

1996-01-01

318

Airline Careers. Aviation Careers Series. Revised.  

ERIC Educational Resources Information Center

This booklet, one in a series on aviation careers, outlines the variety of careers available in airlines. The first part of the booklet provides general information about careers in the airline industry, including salaries, working conditions, job requirements, and projected job opportunities. In the main part of the booklet, the following 22 job…

Zaharevitz, Walter

319

Flight Attendants. Aviation Careers Series. Revised.  

ERIC Educational Resources Information Center

This booklet, one in a series on aviation careers, outlines the career opportunities of airline flight attendants. General information about airline hiring policies for flight attendants are discussed, and the following information about the flight attendant job classification is provided: nature of the work, working conditions, where the jobs…

Zaharevitz, Walter

320

NASA and General Aviation. NASA SP-485.  

ERIC Educational Resources Information Center

A detailed examination of the nature and function of general aviation and a discussion of how the National Aeronautics and Space Administration (NASA) helps keep it on the cutting edge of technology are offered in this publication. The intricacies of aerodynamics, energy, and safety as well as the achievements in aeronautical experimentation are…

Ethell, Jeffrey L.

321

Behavior Pattern Recognition and Aviation Security  

Microsoft Academic Search

New and evolving threats to aviation security require innovative and proactive solutions. Boston's Logan International Airport is adopting new methods to screen passengers based on techniques developed in Israel over the past 30 years. Behavior pattern recognition is a form of profiling passengers based not on race or religion but on suspicious and deceitful behavior. This technique is being used

Brian Seymour

2005-01-01

322

Aviation technology applicable to developing regions  

NASA Technical Reports Server (NTRS)

This paper is an analysis of aviation technologies useful for formulation of development plans to the year 2000 for emerging nations. The Caribbean Basin was used as a specific application. This development promises to be so explosive over the next 15 years as to be virtually unpredictable.

Zuk, John; Alton, Larry R.

1988-01-01

323

Aviation Sustainable Biofuels: An Asian Airline Perspective  

E-print Network

Generation Biofuels ­ key advantages · Environmental ­ reduced CO2 emissions throughout the lifecycle in sectors with best economic returns (currently diesel/gasoline) - Aviation may get up to 15% of global chain establishment and control Challenge: Greenhouse Gas Emissions Opportunity: · Reduce emissions cost

324

Understanding Aviation Meteorology and Weather Hazards with Ground-Based Observations  

Microsoft Academic Search

\\u000a Meteorology is no doubt important for aviation, as weather hazards have a significant negative impact on aircraft safety and\\u000a traffic delay. Based on recent surveys, 20–30% of worldwide air accidents and as much as 22% of air traffic delays are due\\u000a to to adverse weather conditions. Information on thunderstorms, ceiling and visibility, wind shear, turbulence, and aircraft\\u000a icing conditions are

Christian Pagé

325

U.S. GEOLOGICAL SURVEY--REDUCING THE RISK FROM VOLCANO HAZARDS U.S. Geological Survey's Alert-Notification System for Volcanic Activity  

E-print Network

U.S. GEOLOGICAL SURVEY--REDUCING THE RISK FROM VOLCANO HAZARDS U.S. Geological Survey's Alert's 170 active volcanoes (red triangles) for signs of unrest and for issuing timely warnings of hazardous at the five volcano observatories operated by the USGS Volcano Hazards Program and also by State

Torgersen, Christian

326

An IUE survey of activity in red giants and supergiants  

NASA Astrophysics Data System (ADS)

Chromospheric and transition region line activity is examined in apparently single red giants and supergiants using the IUE archives. Low-resolution, large-aperture spectra (mostly short-wavelength) were used to search for variations of emission-line fluxes in time. A series of automatic processing procedures were implemented in order to uniformly calibrate a large number of spectra, fit continua to each of them, determine the fluxes of as many as 18 emission lines, and compare them at different epochs. A method is offered to compute the overall error in the integrated flux, a critical measure of activity, independent of the observing and processing details. This processing was applied to above 120 images of 26 stars taken over a period of 7 yr (1978-1984). Four stars showed UV emission-line flux variations. Alpha Aqr, Beta Peg, and Sigma Oph showed a single enhanced-emission event in all detectable emission lines. Gamma Aql exhibited an increase in the flux level of the O I (1641 A) line in mid-1981 with no comparable change in any other lines. These four stars lie in a region of the H-R diagram in which time-dependent circumstellar absorption lines appear.

Oznovich, I.; Gibson, D. M.

1987-08-01

327

Projected Impact of Compositional Verification on Current and Future Aviation Safety Risk  

NASA Technical Reports Server (NTRS)

The projected impact of compositional verification research conducted by the National Aeronautic and Space Administration System-Wide Safety and Assurance Technologies on aviation safety risk was assessed. Software and compositional verification was described. Traditional verification techniques have two major problems: testing at the prototype stage where error discovery can be quite costly and the inability to test for all potential interactions leaving some errors undetected until used by the end user. Increasingly complex and nondeterministic aviation systems are becoming too large for these tools to check and verify. Compositional verification is a "divide and conquer" solution to addressing increasingly larger and more complex systems. A review of compositional verification research being conducted by academia, industry, and Government agencies is provided. Forty-four aviation safety risks in the Biennial NextGen Safety Issues Survey were identified that could be impacted by compositional verification and grouped into five categories: automation design; system complexity; software, flight control, or equipment failure or malfunction; new technology or operations; and verification and validation. One capability, 1 research action, 5 operational improvements, and 13 enablers within the Federal Aviation Administration Joint Planning and Development Office Integrated Work Plan that could be addressed by compositional verification were identified.

Reveley, Mary S.; Withrow, Colleen A.; Leone, Karen M.; Jones, Sharon M.

2014-01-01

328

Aviation Trends Related to Atmospheric Environment Safety Technologies Project Technical Challenges  

NASA Technical Reports Server (NTRS)

Current and future aviation safety trends related to the National Aeronautics and Space Administration's Atmospheric Environment Safety Technologies Project's three technical challenges (engine icing characterization and simulation capability; airframe icing simulation and engineering tool capability; and atmospheric hazard sensing and mitigation technology capability) were assessed by examining the National Transportation Safety Board (NTSB) accident database (1989 to 2008), incidents from the Federal Aviation Administration (FAA) accident/incident database (1989 to 2006), and literature from various industry and government sources. The accident and incident data were examined for events involving fixed-wing airplanes operating under Federal Aviation Regulation (FAR) Parts 121, 135, and 91 for atmospheric conditions related to airframe icing, ice-crystal engine icing, turbulence, clear air turbulence, wake vortex, lightning, and low visibility (fog, low ceiling, clouds, precipitation, and low lighting). Five future aviation safety risk areas associated with the three AEST technical challenges were identified after an exhaustive survey of a variety of sources and include: approach and landing accident reduction, icing/ice detection, loss of control in flight, super density operations, and runway safety.

Reveley, Mary S.; Withrow, Colleen A.; Barr, Lawrence C.; Evans, Joni K.; Leone, Karen M.; Jones, Sharon M.

2014-01-01

329

Mitigating Aviation Communication and Satellite Orbit Operations Surprises from Adverse Space Weather  

NASA Technical Reports Server (NTRS)

Adverse space weather affects operational activities in aviation and satellite systems. For example, large solar flares create highly variable enhanced neutral atmosphere and ionosphere electron density regions. These regions impact aviation communication frequencies as well as precision orbit determination. The natural space environment, with its dynamic space weather variability, is additionally changed by human activity. The increase in orbital debris in low Earth orbit (LEO), combined with lower atmosphere CO2 that rises into the lower thermosphere and causes increased cooling that results in increased debris lifetime, adds to the environmental hazards of navigating in near-Earth space. This is at a time when commercial space endeavors are posed to begin more missions to LEO during the rise of the solar activity cycle toward the next maximum (2012). For satellite and aviation operators, adverse space weather results in greater expenses for orbit management, more communication outages or aviation and ground-based high frequency radio used, and an inability to effectively plan missions or service customers with space-based communication, imagery, and data transferal during time-critical activities. Examples of some revenue-impacting conditions and solutions for mitigating adverse space weather are offered.

Tobiska, W. Kent

2008-01-01

330

Global, regional and local health impacts of civil aviation emissions  

NASA Astrophysics Data System (ADS)

Aviation emissions impact surface air quality at multiple scales—from near-airport pollution peaks associated with airport landing and take off (LTO) emissions, to intercontinental pollution attributable to aircraft cruise emissions. Previous studies have quantified aviation’s air quality impacts around a specific airport, in a specific region, or at the global scale. However, no study has assessed the air quality and human health impacts of aviation, capturing effects on all aforementioned scales. This study uses a multi-scale modeling approach to quantify and monetize the air quality impact of civil aviation emissions, approximating effects of aircraft plume dynamics-related local dispersion (?1 km), near-airport dispersion (?10 km), regional (?1000 km) and global (?10 000 km) scale chemistry and transport. We use concentration-response functions to estimate premature deaths due to population exposure to aviation-attributable PM2.5 and ozone, finding that aviation emissions cause ?16 000 (90% CI: 8300–24 000) premature deaths per year. Of these, LTO emissions contribute a quarter. Our estimate shows that premature deaths due to long-term exposure to aviation-attributable PM2.5 and O3 lead to costs of ?21 bn per year. We compare these costs to other societal costs of aviation and find that they are on the same order of magnitude as global aviation-attributable climate costs, and one order of magnitude larger than aviation-attributable accident and noise costs.

Yim, Steve H. L.; Lee, Gideon L.; Lee, In Hwan; Allroggen, Florian; Ashok, Akshay; Caiazzo, Fabio; Eastham, Sebastian D.; Malina, Robert; Barrett, Steven R. H.

2015-03-01

331

The Impact of Active Consent Procedures on Nonresponse and Nonresponse Error in Youth Survey Data: Evidence from a New Experiment  

ERIC Educational Resources Information Center

This article reports results from a student survey fielded using an experimental design with 14 Kentucky school districts. Seven of the 14 districts were randomly assigned to implement the survey with active consent procedures; the other seven districts implemented the survey with passive consent procedures. We used our experimental design to…

Courser, Matthew W.; Shamblen, Stephen R.; Lavrakas, Paul J.; Collins, David; Ditterline, Paul

2009-01-01

332

A MID-INFRARED CENSUS OF STAR FORMATION ACTIVITY IN BOLOCAM GALACTIC PLANE SURVEY SOURCES  

SciTech Connect

We present the results of a search for mid-infrared signs of star formation activity in the 1.1 mm sources in the Bolocam Galactic Plane Survey (BGPS). We have correlated the BGPS catalog with available mid-IR Galactic plane catalogs based on the Spitzer Space Telescope GLIMPSE legacy survey and the Midcourse Space Experiment (MSX) Galactic plane survey. We find that 44% (3712 of 8358) of the BGPS sources contain at least one mid-IR source, including 2457 of 5067 (49%) within the area where all surveys overlap (10 deg. < l < 65 deg.). Accounting for chance alignments between the BGPS and mid-IR sources, we conservatively estimate that 20% of the BPGS sources within the area where all surveys overlap show signs of active star formation. We separate the BGPS sources into four groups based on their probability of star formation activity. Extended Green Objects and Red MSX Sources make up the highest probability group, while the lowest probability group is comprised of 'starless' BGPS sources which were not matched to any mid-IR sources. The mean 1.1 mm flux of each group increases with increasing probability of active star formation. We also find that the 'starless' BGPS sources are the most compact, while the sources with the highest probability of star formation activity are on average more extended with large skirts of emission. A subsample of 280 BGPS sources with known distances demonstrates that mass and mean H{sub 2} column density also increase with probability of star formation activity.

Dunham, Miranda K. [Department of Astronomy, Yale University, P.O. Box 208101, New Haven, CT 06520-8101 (United States); Robitaille, Thomas P.; Evans, Neal J. II [Department of Astronomy, University of Texas at Austin, 1 University Station C1400, Austin, Texas 78712-0259 (United States); Schlingman, Wayne M. [Steward Observatory, University of Arizona, 933 North Cherry Ave., Tucson, AZ 85721 (United States); Cyganowski, Claudia J. [Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138 (United States); Urquhart, James, E-mail: miranda.dunham@yale.edu [Australia Telescope National Facility, CSIRO Astronomy and Space Science, P.O. Box 76, Epping, NSW 1710 (Australia)

2011-04-20

333

A COMPARATIVE SURVEY OF ACTIVITY-BASED METHODS FOR INFORMATION SYSTEMS DEVELOPMENT  

E-print Network

A COMPARATIVE SURVEY OF ACTIVITY-BASED METHODS FOR INFORMATION SYSTEMS DEVELOPMENT Amanda Quek with which to analyse and understand human behaviour in context. AT-based methods for IS development may-based methods for IS development. The importance of considering contextual and social issues in IS development

334

Test-Retest Reliability of a Survey to Measure Transport-Related Physical Activity in Adults  

ERIC Educational Resources Information Center

The present research details test-retest reliability of a newly developed, telephone-administered TPA survey for adults. This instrument examines barriers, perceptions, and current travel behaviors to place of work/study and local convenience shops. Demonstrated test-retest reliability of the Active Friendly Environments-Transport-Related Physical…

Badland, Hannah; Schofield, Grant

2006-01-01

335

Happiness and Physical Activity in Special Populations: Evidence From Korean Survey Data  

Microsoft Academic Search

This article contributes to the literature on happiness by focusing on the effects of physical activity or sport participation on happiness or life satisfaction in a special population. Using survey data collected by the Korean Sports Association for the Disabled, all respondents were legally disabled. This study presents empirical evidence of positive \\

Young Hoon Lee

2010-01-01

336

Social Work Roles and Activities Regarding Psychiatric Medication: Results of a National Survey  

ERIC Educational Resources Information Center

This article reports the findings of a 2001 national survey of social workers regarding their everyday practice roles and activities regarding psychiatric medication. The results of this quantitative study indicate variability in the types of roles carried out by social workers with regard to psychiatric medication, but that perceptions of…

Bentley, Kia J.; Walsh, Joseph; Farmer, Rosemary L.

2005-01-01

337

A LOOMING RHETORICAL GAP: A SURVEY OF PUBLIC COMMUNICATIONS ACTIVITIES FOR CARBON DIOXIDE  

E-print Network

A LOOMING RHETORICAL GAP: A SURVEY OF PUBLIC COMMUNICATIONS ACTIVITIES FOR CARBON DIOXIDE CAPTURE The major communications efforts to the general public on carbon dioxide capture and storage (CCS: Public communications, carbon dioxide capture and storage (CCS), outreach, science and technology

Aickelin, Uwe

338

Energy Survey Activities off Atlantic Coast Get Green Light From Obama Administration  

NASA Astrophysics Data System (ADS)

The 27 February release of an environmental review of geological and geophysical (G&G) survey activities off the mid- and South Atlantic outer continental shelf is a key step toward potentially opening the area to oil and gas exploration, according to industry and environmental groups. That is a prospect industry groups favor and environmental groups say will harm marine life.

Showstack, Randy

2014-03-01

339

Factors Associated with Physical Activity among Spanish Youth through the National Health Survey  

Microsoft Academic Search

Background. Physical inactivity is emerging as one of the largest public health problems throughout Europe. This study updates descriptive data on physical activity and the factors associated with it among the 6- to 15-year-old Spanish population during leisure time through the National Health Survey.Methods. This is a cross-sectional study from a representative sample of Spanish children's physical activity during their

Luisa Lasheras; Susana Aznar; Begoña Merino; Enrique Gil López

2001-01-01

340

Synthetic and Biomass Alternate Fueling in Aviation  

NASA Technical Reports Server (NTRS)

While transportation fueling can accommodate a broad range of alternate fuels, aviation fueling needs are specific, such as the fuel not freezing at altitude or become too viscous to flow properly or of low bulk energy density that shortens range. The fuel must also be compatible with legacy aircraft, some of which are more than 50 years old. Worldwide, the aviation industry alone uses some 85-95 billion gallons of hydrocarbon-based fossil fuel each year, which is about 10% of the transportation industry. US civil aviation alone consumes nearly 14 billion gallons. The enormity of the problem becomes overwhelming, and the aviation industry is taking alternate fueling issues very seriously. Biofuels (algae, cyanobacteria, halophytes, weeds that use wastelands, wastewater and seatwater), when properly sourced, have the capacity to be drop-in fuel replacements for petroleum fuels. As such, biojet from such sources solves the aviation CO2 emissions issue without the downsides of 'conventional' biofuels, such as competing with food and fresh water resources. Of the many current fundamental problems, the major biofuel problem is cost. Both research and development and creative engineering are required to reduce these biofuels costs. Research is also ongoing in several 'improvement' areas including refining/processing and biologics with greater disease resistance, greater bio-oil productivity, reduced water/nutrient requirements, etc. The authors' current research is aimed at aiding industry efforts in several areas. They are considering different modeling approaches, growth media and refining approaches, different biologic feedstocks, methods of sequestering carbon in the processes, fuel certification for aviation use and, overall, ensuring that biofuels are feasible from all aspects - operability, capacity, carbon cycle and financial. The authors are also providing common discussion grounds/opportunities for the various parties, disciplines and concerned organization to share both issues and potential ways for moving forward, and overall, trying to educate those concerned about the innate limitations of 'conventional' biofuels and the solutions provided by non-traditional feedstocks that used waste lands/water or saline/salt water have an immense capacity potential.

Hendricks, R. C.; Bushnell, D. M.

2009-01-01

341

Multi-fuel rotary engine for general aviation aircraft  

NASA Technical Reports Server (NTRS)

Design studies of advanced multifuel general aviation and commuter aircraft rotary stratified charge engines are summarized. Conceptual design studies were performed at two levels of technology, on advanced general aviation engines sized to provide 186/250 shaft kW/hp under cruise conditions at 7620 (25000 m/ft) altitude. A follow on study extended the results to larger (2500 hp max.) engine sizes suitable for applications such as commuter transports and helicopters. The study engine designs were derived from relevant engine development background including both prior and recent engine test results using direct injected unthrottled rotary engine technology. Aircraft studies, using these resultant growth engines, define anticipated system effects of the performance and power density improvements for both single engine and twin engine airplanes. The calculated results indicate superior system performance and 27 to 33 percent fuel economy improvement for the rotary engine airplanes as compared to equivalent airframe concept designs with current baseline engines. The research and technology activities required to attain the projected engine performance levels are also discussed.

Jones, C.; Ellis, D. R.; Meng, P. R.

1983-01-01

342

Multi-Fuel Rotary Engine for General Aviation Aircraft  

NASA Technical Reports Server (NTRS)

Design studies, conducted for NASA, of Advanced Multi-fuel General Aviation and Commuter Aircraft Rotary Stratified Charge Engines are summarized. Conceptual design studies of an advanced engine sized to provide 186/250 shaft KW/HP under cruise conditions at 7620/25,000 m/ft. altitude were performed. Relevant engine development background covering both prior and recent engine test results of the direct injected unthrottled rotary engine technology, including the capability to interchangeably operate on gasoline, diesel fuel, kerosene, or aviation jet fuel, are presented and related to growth predictions. Aircraft studies, using these resultant growth engines, define anticipated system effects of the performance and power density improvements for both single engine and twin engine airplanes. The calculated results indicate superior system performance and 30 to 35% fuel economy improvement for the Rotary-engine airplanes as compared to equivalent airframe concept designs with current baseline engines. The research and technology activities required to attain the projected engine performance levels are also discussed.

Jones, C.; Ellis, D. R.; Meng, P. R.

1983-01-01

343

Multi-fuel rotary engine for general aviation aircraft  

NASA Technical Reports Server (NTRS)

Design studies of advanced multifuel general aviation and commuter aircraft rotary stratified charge engines are summarized. Conceptual design studies were performed at two levels of technology, an advanced general aviation engines sized to provide 186/250 shaft kW/hp under cruise conditions at 7620 (25,000 m/ft) altitude. A follow on study extended the results to larger (2500 hp max.) engine sizes suitable for applications such as commuter transports and helicopters. The study engine designs were derived from relevant engine development background including both prior and recent engine test results using direct injected unthrottled rotary engine technology. Aircraft studies, using these resultant growth engines, define anticipated system effects of the performance and power density improvements for both single engine and twin engine airplanes. The calculated results indicate superior system performance and 27 to 33 percent fuel economy improvement for the rotary engine airplanes as compared to equivalent airframe concept designs with current baseline engines. The research and technology activities required to attain the projected engine performance levels are also discussed. Previously announced in STAR as N83-18910

Jones, C.; Ellis, D. R.; Meng, P. R.

1983-01-01

344

Seismic Vulnerability Evaluations Within The Structural And Functional Survey Activities Of The COM Bases In Italy  

SciTech Connect

The paper describes technical and functional surveys on COM buildings (Mixed Operative Centre). This activity started since 2005, with the contribution of both Italian Civil Protection Department and the Regions involved. The project aims to evaluate the efficiency of COM buildings, checking not only structural, architectonic and functional characteristics but also paying attention to surrounding real estate vulnerability, road network, railways, harbours, airports, area morphological and hydro-geological characteristics, hazardous activities, etc. The first survey was performed in eastern Sicily, before the European Civil Protection Exercise 'EUROSOT 2005'. Then, since 2006, a new survey campaign started in Abruzzo, Molise, Calabria and Puglia Regions. The more important issue of the activity was the vulnerability assessment. So this paper deals with a more refined vulnerability evaluation technique by means of the SAVE methodology, developed in the 1st task of SAVE project within the GNDT-DPC programme 2000-2002 (Zuccaro, 2005); the SAVE methodology has been already successfully employed in previous studies (i.e. school buildings intervention programme at national scale; list of strategic public buildings in Campania, Sicilia and Basilicata). In this paper, data elaborated by SAVE methodology are compared with expert evaluations derived from the direct inspections on COM buildings. This represents a useful exercise for the improvement either of the survey forms or of the methodology for the quick assessment of the vulnerability.

Zuccaro, G.; Cacace, F. [Studies Center Plinivs--Lupt, Univ. of Naples 'Federico II', Via Toledo 402--80134 Naples (Italy); Albanese, V.; Mercuri, C.; Papa, F.; Pizza, A. G.; Sergio, S.; Severino, M. [Italian Department of Civil Protection, Via Vitorchiano 2, 00189, Rome (Italy)

2008-07-08

345

Cosmic rays and dosimetry at aviation altitudes.  

PubMed

Recent concerns regarding the effects of the cosmic radiation field at aircraft altitudes on aircrew have resulted in a renewed interest in detailed measurements of the neutral and charged particle components in the atmosphere. CR-39 nuclear track detectors have been employed on a number of subsonic and supersonic aircraft to measure charge spectra and LET spectra at aircraft altitudes. These detectors are ideal for long term exposures required for these studies and their passive nature makes them suitable for an environment where interference with flight instrumentation could be a problem. We report here on measurements and analysis of short range tracks which were produced by high LET particles generated mainly by neutron interactions at aviation altitudes. In order to test the overall validity of the technique measurements were also carried out at the CERN-CEC field which simulates the radiation field at aviation altitudes and good agreement was found with dose values obtained using mainly heavy ion calibration. PMID:12025842

O'Sullivan, D; Zhou, D; Heinrich, W; Roesler, S; Donnelly, J; Keegan, R; Flood, E; Tommasino, L

1999-06-01

346

Synthetic and Biomass Alternate Fueling in Aviation  

NASA Technical Reports Server (NTRS)

Worldwide, aviation alone uses 85 to 95 billion gallons of nonrenewable fossil fuel per year (2008). General transportation fueling can accommodate several different fuels; however, aviation fuels have very specific requirements. Biofuels have been flight demonstrated, are considered renewable, have the capacity to become "drop-in" replacements for Jet-A fuel, and solve the CO2 climate change problem. The major issue is cost; current biomass biofuels are not economically competitive. Biofuel feedstock sources being researched are halophytes, algae, cyanobacteria, weeds-to-crops, wastes with contingent restraints on use of crop land, freshwater, and climate change. There are five major renewable energy sources: solar thermal, solar photovoltaic, wind, drilled geothermal and biomass, each of which have an order of magnitude greater capacity to meet all energy needs. All five address aspects of climate change; biomass has massive potential as an energy fuel feedstock.

Hendricks, R.C.; Bushnell, D.M.

2009-01-01

347

Ultralean combustion in general aviation piston engines  

NASA Technical Reports Server (NTRS)

The role of ultralean combustion in achieving fuel economy in general aviation piston engines was investigated. The aircraft internal combustion engine was reviewed with regard to general aviation requirements, engine thermodynamics and systems. Factors affecting fuel economy such as those connected with an ideal leanout to near the gasoline lean flammability limit (ultralean operation) were analyzed. A Lycoming T10-541E engine was tested in that program (both in the test cell and in flight). Test results indicate that hydrogen addition is not necessary to operate the engine ultralean. A 17 percent improvement in fuel economy was demonstrated in flight with the Beechcraft Duke B60 by simply leaning the engine at constant cruiser power and adjusting the ignition for best timing. No detonation was encountered, and a 25,000 ft ceiling was available. Engine roughness was shown to be the limiting factor in the leanout.

Chirivella, J. E.

1979-01-01

348

On the applicability of integrated circuit technology to general aviation orientation estimation  

NASA Technical Reports Server (NTRS)

The criteria of the significant value of the panel instruments used in general aviation were examined and kinematic equations were added for comparison. An instrument survey was performed to establish the present state of the art in linear and angular accelerometers, pressure transducers, and magnetometers. A very preliminary evaluation was done of the computers available for data evaluation and estimator mechanization. The mathematical model of a light twin aircraft employed in the evaluation was documented, the results of the sensor survey and the results of the design studies were presented.

Debra, D. B.; Tashker, M. G.

1976-01-01

349

Activity Groupings of Primary Science Co?ordinators: a survey of co?ordinators’ activities  

Microsoft Academic Search

A check?list of 119 activities was completed by 222 science co?ordinators of primary schools in two local education authorities (LEAs). Cluster analysis was used to group the check?list activities into 10 activity scales; the scales were then used to group the co?ordinators. Five activity groups of co?ordinators could be distinguished according to their usage of the activity scales. The activity

J. L. Moore

1994-01-01

350

Toward Risk-Based Aviation Security Policy  

Microsoft Academic Search

The well-coordinated terrorist attacks on Sept. 11, 2001 presented the world with a new aviation security threat: the capture of aircraft in flight to be used as human-guided missiles. The two previous threats—hijacking an aircraft for ransom and putting a bomb aboard an aircraft—had led to varying degrees of screening of baggage and passengers in developed countries, plus some use

Robert W. Poole Jr.

2008-01-01

351

Aviation turbine fuel properties and their trends  

NASA Technical Reports Server (NTRS)

Fuel property values and their trends were studied through a review of a recognized, wide ranging sample population from actual fuel inspection data. A total of 676 fuel samples of Jet A aviation turbine fuel were compiled over an eleven year period. Results indicate that most fuel samples have one to three near-specification properties, the most common being aromatics, smoke point, and freezing point.

Friedman, R.

1981-01-01

352

Military aviation: a contact lens review.  

PubMed

The military aviation communities have benefitted from the development of advanced electro-optical avionics systems. One drawback that has emerged is an increasing system incompatibility with traditional spectacle visual corrections. An alternative solution to the refractive error correction problem that some services have been investigating is that of contact lens wear. Since this much-debated topic is currently of command interest, a general overview of contact lens issues is presented as a framework for future discussions. PMID:2241737

Lattimore, M R

1990-10-01

353

Aviation Weather Information Overview and Status  

NASA Technical Reports Server (NTRS)

This paper presents the weather accident prevention project review during the period of June 5, through June 7, 2001. The topics include: 1) Background; 2) Guidance; 3) Plan; 4) System Elements; 5) AWIN System; 6) Market Segments; 7) Technology Development Level; 8) Aviation Safety Program Organization; 9) Partnerships; 10) NASA Facilities; 11) Timeline; 12) AWIN Research Areas; and 13) Cooperative Research with FAA. This paper is in viewgraph form.

Stough, Paul

2003-01-01

354

Helicopter Flight Training Through Serious Aviation Gaming  

Microsoft Academic Search

The notion of Serious Games dates to at least 1970. More recently leaders also identified gaming technology as a possible disruptive technology. If off-the-shelf PC-based aviation games and the vast library of related civilian developed databases and models can be leveraged for serious training use, then existing flight training paradigms from familiarization training to mission rehearsal might be disrupted and

Michael D. Proctor; Maria Bauer; Thomas Lucario

2007-01-01

355

BoM Aviation Fog Case Exercise  

NSDL National Science Digital Library

This case exercise focuses on a potential fog event in Melbourne, Australia, on 6-7 April 2008. The key aim of this module is to step through the forecast process during a potential fog event from the perspective of an aviation forecaster with the Australian Bureau of Meteorology. This involves consideration of model guidance and observations, identification of potential areas of fog, forecasting and nowcasting fog formation and clearance, and considering and providing TAF updates throughout.

COMET

2009-02-26

356

Validation of a New Brief Physical Activity Survey among Men and Women Aged 60-69 Years  

Microsoft Academic Search

The Stanford Brief Activity Survey (SBAS), a new two-item physical activity survey, and the Stanford Seven-Day Physical Activity Recall (PAR) questionnaire were administered to men and women, aged 60-69 years, in the Atherosclerotic Disease VAscular functioN and genetiC Epidemiology (ADVANCE) Study. Frequency distributions of SBAS activity levels, as well as a receiver operating curve, were calculated to determine if the

Ruth E. Taylor-Piliae; Linda C. Norton; William L. Haskell; Mohammed H. Mahbouda; Joan M. Fair; Carlos Iribarren; Mark A. Hlatky; Alan S. Go; Stephen P. Fortmann

2006-01-01

357

The Aviation System Monitoring and Modeling (ASMM) Project: A Documentation of its History and Accomplishments: 1999-2005  

NASA Technical Reports Server (NTRS)

The Aviation System Monitoring and Modeling (ASMM) Project was one of the projects within NASA s Aviation Safety Program from 1999 through 2005. The objective of the ASMM Project was to develop the technologies to enable the aviation industry to undertake a proactive approach to the management of its system-wide safety risks. The ASMM Project entailed four interdependent elements: (1) Data Analysis Tools Development - develop tools to convert numerical and textual data into information; (2) Intramural Monitoring - test and evaluate the data analysis tools in operational environments; (3) Extramural Monitoring - gain insight into the aviation system performance by surveying its front-line operators; and (4) Modeling and Simulations - provide reliable predictions of the system-wide hazards, their causal factors, and their operational risks that may result from the introduction of new technologies, new procedures, or new operational concepts. This report is a documentation of the history of this highly successful project and of its many accomplishments and contributions to improved safety of the aviation system.

Statler, Irving C. (Editor)

2007-01-01

358

Aviation Fueling: A Cleaner, Greener Approach  

NASA Technical Reports Server (NTRS)

Projected growth of aviation depends on fueling where specific needs must be met. Safety is paramount, and along with political, social, environmental and legacy transport systems requirements, alternate aviation fueling becomes an opportunity of enormous proportions. Biofuels sourced from halophytes, algae, cyanobacteria, and weeds using wastelands, waste water, and seawater have the capacity to be drop-in fuel replacements for petroleum fuels. Biojet fuels from such sources solves the aviation CO2 emissions issue and do not compete with food or freshwater needs. They are not detrimental to the social or environmental fabric and use the existing fuels infrastructure. Cost and sustainable supply remains the major impediments to alternate fuels. Halophytes are the near-term solution to biomass/biofuels capacity at reasonable costs; they simply involve more farming, at usual farming costs. Biofuels represent a win-win approach, proffering as they do at least the ones we are studying massive capacity, climate neutral-to-some sequestration, and ultimately, reasonable costs.

Hendricks, Robert C.; Bushnell, Dennis M.; Shouse, Dale T.

2010-01-01

359

Global civil aviation black carbon emissions.  

PubMed

Aircraft black carbon (BC) emissions contribute to climate forcing, but few estimates of BC emitted by aircraft at cruise exist. For the majority of aircraft engines the only BC-related measurement available is smoke number (SN)-a filter based optical method designed to measure near-ground plume visibility, not mass. While the first order approximation (FOA3) technique has been developed to estimate BC mass emissions normalized by fuel burn [EI(BC)] from SN, it is shown that it underestimates EI(BC) by >90% in 35% of directly measured cases (R(2) = -0.10). As there are no plans to measure BC emissions from all existing certified engines-which will be in service for several decades-it is necessary to estimate EI(BC) for existing aircraft on the ground and at cruise. An alternative method, called FOX, that is independent of the SN is developed to estimate BC emissions. Estimates of EI(BC) at ground level are significantly improved (R(2) = 0.68), whereas estimates at cruise are within 30% of measurements. Implementing this approach for global civil aviation estimated aircraft BC emissions are revised upward by a factor of ~3. Direct radiative forcing (RF) due to aviation BC emissions is estimated to be ~9.5 mW/m(2), equivalent to ~1/3 of the current RF due to aviation CO2 emissions. PMID:23844612

Stettler, Marc E J; Boies, Adam M; Petzold, Andreas; Barrett, Steven R H

2013-09-17

360

Human Factors Directions for Civil Aviation  

NASA Technical Reports Server (NTRS)

Despite considerable progress in understanding human capabilities and limitations, incorporating human factors into aircraft design, operation, and certification, and the emergence of new technologies designed to reduce workload and enhance human performance in the system, most aviation accidents still involve human errors. Such errors occur as a direct or indirect result of untimely, inappropriate, or erroneous actions (or inactions) by apparently well-trained and experienced pilots, controllers, and maintainers. The field of human factors has solved many of the more tractable problems related to simple ergonomics, cockpit layout, symbology, and so on. We have learned much about the relationships between people and machines, but know less about how to form successful partnerships between humans and the information technologies that are beginning to play a central role in aviation. Significant changes envisioned in the structure of the airspace, pilots and controllers' roles and responsibilities, and air/ground technologies will require a similarly significant investment in human factors during the next few decades to ensure the effective integration of pilots, controllers, dispatchers, and maintainers into the new system. Many of the topics that will be addressed are not new because progress in crucial areas, such as eliminating human error, has been slow. A multidisciplinary approach that capitalizes upon human studies and new classes of information, computational models, intelligent analytical tools, and close collaborations with organizations that build, operate, and regulate aviation technology will ensure that the field of human factors meets the challenge.

Hart, Sandra G.

2002-01-01

361

Environmental Survey preliminary report, Department of Energy (DOE) activities at Santa Susana Field Laboratories, Ventura County, California  

SciTech Connect

This report presents the preliminary findings from the first phase of the Environmental Survey of the United States Department of Energy (DOE) activities at the Santa Susana Field Laboratories Site (DOE/SSFL), conducted May 16 through 26, 1988. The Survey is being conducted by an interdisciplinary team of environmental specialists, led and managed by the Office of Environment, Safety and Health's Office of Environmental Audit. Individual participants for the Survey team are being supplied by an private contractor. The objective of the survey is to identify environmental problems and areas of environmental risk associated with DOE activities at SSFL. The Survey covers all environmental media and all areas of environmental regulation. It is being performed in accordance with the DOE Environmental Survey Manual. This phase of the Survey involves the review of existing site environmental data, observations of the operations performed at SSFL, and interviews with site personnel. 90 refs., 17 figs., 28 tabs.

Not Available

1989-02-01

362

U.S. Geological Survey's Alert Notification System for Volcanic Activity  

USGS Publications Warehouse

The United States and its territories have about 170 volcanoes that have been active during the past 10,000 years, and most could erupt again in the future. In the past 500 years, 80 U.S. volcanoes have erupted one or more times. About 50 of these recently active volcanoes are monitored, although not all to the same degree. Through its five volcano observatories, the U.S. Geological Survey (USGS) issues information and warnings to the public about volcanic activity. For clarity of warnings during volcanic crises, the USGS has now standardized the alert-notification system used at its observatories.

Gardner, Cynthia A.; Guffanti, Marianne C.

2006-01-01

363

The Impact of Child Obesity on Active Parental Consent in School-Based Survey Research on Healthy Eating and Physical Activity  

ERIC Educational Resources Information Center

Previous studies have shown that active consent procedures result in sampling bias in surveys dealing with adolescent risk behaviors such as cigarette smoking and illicit drug use. To examine sampling bias from active consent procedures when the survey topic pertains to childhood obesity and associated health behaviors, the authors pair data…

Mellor, Jennifer M.; Rapoport, Ronald B.; Maliniak, Daniel

2008-01-01

364

ASMET 7: Forecasting Fog for Aviation: Kenya Case Study  

NSDL National Science Digital Library

This lesson aims to improve aviation forecasts of fog in the African airspace by teaching forecasters to make more accurate forecasts using satellite imagery, numerical weather prediction, and other available data. A process for diagnosing and forecasting fog is presented and applied to a case over the Nairobi, Kenya region. Learners assume the role of aviation forecaster, analysing various products to determine whether the current Terminal Aerodrome Forecast (TAF) is valid or needs to be amended. The lesson is intended for aviation forecasters, general weather forecasters interested in aviation meteorology, and meteorological forecasting instructors and students. This lesson is one of three aviation weather case studies developed by the ASMET project to improve aviation forecasting in Africa. They also support COMET's Review of Aeronautical Meteorology – Africa online learning curriculum, which provides training that supports the WMO/ICAO competencies for Aeronautical Meteorological Forecasters.

COMET

2013-11-05

365

Completion of a Large Survey of Activity in Nearby G Dwarfs  

NASA Astrophysics Data System (ADS)

This program will complete a survey of activity in ~5,000 solar- type stars within 60 pc. By ``solar-type'' we mean about F8V to K2V (the sample is defined by B-V colors from Hipparcos). Activity is measured from the cores of the Ca II H and K lines. We have already observed ~3,000 stars above -40° declination at Kitt Peak and about 800 stars below -26° in an earlier effort at CTIO. This proposal is for mop-up in the northern portions, and for the first semester for southern stars using the Hipparcos-defined sample (the earlier sample was less well defined and not volume-limited, although portions of it are still valid). This survey has three purposes. First, we identify interesting (i.e., highly active) stars worthy of further study. Some of these turn out to be pre-main sequence stars which are not associated with known regions of star formation, and their existence is difficult to explain. Second, we provide an extensive context into which to place solar and stellar activity in a statistical sense. Finally, the survey will provide metallicities of good systematic quality for studying properties of our Galactic neighborhood. The information we produce will become part of an effort to fully characterize the nearby stars.

Soderblom, David R.; King, Jeremy R.; Henry, Todd J.

2000-08-01

366

An Examination of Safety Management Systems and Aviation Technologies in the Helicopter Emergency Medical Services Industry  

NASA Astrophysics Data System (ADS)

The Helicopter Emergency Medical Service (HEMS) industry has a significant role in the transportation of injured patients, but has experienced more accidents than all other segments of the aviation industry combined. With the objective of addressing this discrepancy, this study assesses the effect of safety management systems implementation and aviation technologies utilization on the reduction of HEMS accident rates. Participating were 147 pilots from Federal Aviation Regulations Part 135 HEMS operators, who completed a survey questionnaire based on the Safety Culture and Safety Management System Survey (SCSMSS). The study assessed the predictor value of SMS implementation and aviation technologies to the frequency of HEMS accident rates with correlation and multiple linear regression. The correlation analysis identified three significant positive relationships. HEMS years of experience had a high significant positive relationship with accident rate (r=.90; p<.05); SMS had a moderate significant positive relationship to Night Vision Goggles (NVG) (r=.38; p<.05); and SMS had a slight significant positive relationship with Terrain Avoidance Warning System (TAWS) (r=.234; p<.05). Multiple regression analysis suggested that when combined with NVG, TAWS, and SMS, HEMS years of experience explained 81.4% of the variance in accident rate scores (p<.05), and HEMS years of experience was found to be a significant predictor of accident rates (p<.05). Additional quantitative regression analysis was recommended to replicate the results of this study and to consider the influence of these variables for continued reduction of HEMS accidents, and to induce execution of SMS and aviation technologies from a systems engineering application. Recommendations for practice included the adoption of existing regulatory guidance for a SMS program. A qualitative analysis was also recommended for future study SMS implementation and HEMS accident rate from the pilot's perspective. A quantitative longitudinal study would further explore inferential relationships between the study variables. Current strategies should include the increased utilization of available aviation technology resources as this proactive stance may be beneficial for the establishment of an effective safety culture within the HEMS industry.

Buckner, Steven A.

367

Legacy: General Aviation Highlights from 8 Decades of NACA/NASA Research  

NASA Technical Reports Server (NTRS)

Legacy includes the bibliographic citations and full text images of 179 NACA (National Advisory Committee for Aeronautics) and NASA (National Aeronautics and Space Administration) reports of interest to the general aviation (GA) community. The majority of titles included in this collection were recommended by the GA community in response to an Advanced General Aviation Transport Experiments (AGATE) survey conducted in January 1995. Searching and browsing of the collection is supported using all elements of the bibliographic record. A complete scanned image of each report is provided for viewing and printing. This 'first volume' of Legacy is a prototype product that will serve as a proof-of-concept trial for distributing information via CD-ROM to members of AGATE and others. The CD-ROM may be operated on Mac (6.0.5 or higher), Windows (3.1 or higher), or DOS (3.0 or higher) platforms.

Adkins, Susan L.; Strain, Natale A.; Robinson, Stephen K.

1995-01-01

368

Cooperative activities of the U.S. Geological Survey with Historically Black Colleges and Universities, fiscal years 1983-90  

USGS Publications Warehouse

The U.S. Department of the Interior, U.S. Geological Survey, has been involved in numerous cooperative activities with Historically Black Colleges and Universities. Assistance agreements, which include both grants and cooperative agreements, have fostered many educational research and development activities. These activities have included site visits, employment opportunities, curriculum development, seminars, and research projects. The activities are consistent with the Geological Survey's mission of conducting earth-science research and dissemination of the results. The cooperative have benefitted the Historically Black Colleges and Universities, their students, and the Geological Survey.

Hall, A. E., (Edited By); Scott, J.C.

1991-01-01

369

System for Secure Integration of Aviation Data  

NASA Technical Reports Server (NTRS)

The Aviation Data Integration System (ADIS) of Ames Research Center has been established to promote analysis of aviation data by airlines and other interested users for purposes of enhancing the quality (especially safety) of flight operations. The ADIS is a system of computer hardware and software for collecting, integrating, and disseminating aviation data pertaining to flights and specified flight events that involve one or more airline(s). The ADIS is secure in the sense that care is taken to ensure the integrity of sources of collected data and to verify the authorizations of requesters to receive data. Most importantly, the ADIS removes a disincentive to collection and exchange of useful data by providing for automatic removal of information that could be used to identify specific flights and crewmembers. Such information, denoted sensitive information, includes flight data (here signifying data collected by sensors aboard an aircraft during flight), weather data for a specified route on a specified date, date and time, and any other information traceable to a specific flight. The removal of information that could be used to perform such tracing is called "deidentification." Airlines are often reluctant to keep flight data in identifiable form because of concerns about loss of anonymity. Hence, one of the things needed to promote retention and analysis of aviation data is an automated means of de-identification of archived flight data to enable integration of flight data with non-flight aviation data while preserving anonymity. Preferably, such an automated means would enable end users of the data to continue to use pre-existing data-analysis software to identify anomalies in flight data without identifying a specific anomalous flight. It would then also be possible to perform statistical analyses of integrated data. These needs are satisfied by the ADIS, which enables an end user to request aviation data associated with de-identified flight data. The ADIS includes client software integrated with other software running on flight-operations quality-assurance (FOQA) computers for purposes of analyzing data to study specified types of events or exceedences (departures of flight parameters from normal ranges). In addition to ADIS client software, ADIS includes server hardware and software that provide services to the ADIS clients via the Internet (see figure). The ADIS server receives and integrates flight and non-flight data pertaining to flights from multiple sources. The server accepts data updates from authorized sources only and responds to requests from authorized users only. In order to satisfy security requirements established by the airlines, (1) an ADIS client must not be accessible from the Internet by an unauthorized user and (2) non-flight data as airport terminal information system (ATIS) and weather data must be displayed without any identifying flight information. ADIS hardware and software architecture as well as encryption and data display scheme are designed to meet these requirements. When a user requests one or more selected aviation data characteristics associated with an event (e.g., a collision, near miss, equipment malfunction, or exceedence), the ADIS client augments the request with date and time information from encrypted files and submits the augmented request to the server. Once the user s authorization has been verified, the server returns the requested information in de-identified form.

Kulkarni, Deepak; Wang, Yao; Keller, Rich; Chidester, Tom; Statler, Irving; Lynch, Bob; Patel, Hemil; Windrem, May; Lawrence, Bob

2007-01-01

370

Progress in aviation through aircraft engineering and modification  

Microsoft Academic Search

Commercial and General Aviation has benefited over the years through the efforts of Research and Development (R&D). Some of these efforts are pursued by the aerospace industry, partnerships with academic institutions, and most frequently by aviation-related government agencies. The Federal Aviation Administration (FAA) has participated and contributed significantly to R&D efforts at the William J. Hughes Technical Center in Egg

L. J. Bottino

2005-01-01

371

Assessing the Relationship between Airlines' Maintenance Outsourcing and Aviation Professionals' Job Satisfaction  

NASA Astrophysics Data System (ADS)

The current economic and security challenges placed an additional burden on U.S. airlines to provide optimum service at reasonable costs to the flying public. In efforts to stay competitive, U.S. airlines increased foreign-based outsourcing of aircraft major repair and overhaul (MRO) mainly to reduce labor costs and conserve capital. This concentrated focus on outsourcing and restructuring, ignored job dissatisfaction among remaining employees which could reduce and or eliminate an airline's competitiveness. The purpose of this quantitative study was (a) to assess the relationship between increased levels of foreign-based MRO outsourcing and aviation professionals' job satisfaction (Y1); (b) to assess the influence of increased levels of foreign-based outsourcing on MRO control (Y2), MRO error rate (Y3), and MRO technical punctuality (Y4) as perceived by aviation professionals; and (c) to assess the influence of increased levels of foreign-based MRO outsourcing on technical skills (Y5) and morale ( Y6) as perceived by aviation professionals. The survey instrument was utilized based on Paul Spector's Job Satisfaction Questionnaire and MRO specific questions. A random sample of 300 U.S. airline participants was requested via MarketTools to meet required sample size of 110 as determined through a priori power analysis. Study data rendered 198 useable surveys of 213 total responses, and correlation, multiple regression, and ANOVA methods were used to test study hypotheses. The Spearman's rho for (Y 1) was statistically significant, p = .010 and multiple regression was statistically significant, p < .001. A one-way ANOVA indicated participants differed in their opinions of (Y2) through (Y6), Recommendations for future research include contrasting domestic and global MRO providers, and examining global aircraft parts suppliers and aviation technical training.

McCamey, Rotorua

372

Survey of oil and gas activities on federal wildlife refuges and waterfowl production areas  

SciTech Connect

An analysis of survey data provides empirical evidence of the effects of oil and gas activities on federal wildlife refuges. The paper reports the results of a systematic survey of units of the National Wildlife Refuge System by the American Petroleum Institute in the form of questionnaires sent to refuge managers. The data suggest that oil and gas operations have had little or no adverse effect on wildlife on most refuges and Waterfowl Protection Areas, that oil and gas activities have detracted little from and have often enhanced other economic and recreational uses which occur on the refuges, and that appropriate regulations, stipulations, and restrictions are a key government management tool for protecting wildlife and other refuge resources. 3 figures, 44 tables.

Ethridge, M.; Guerrieri, U.

1983-01-01

373

Activities of the U.S. Geological Survey Water-Resources Division in North Carolina, 1986  

USGS Publications Warehouse

Water resources programs conducted by the U.S. Geological Survey in the state of North Carolina during 1985 and proposed programs for 1986 are described. This is the first in a series of biennial progress reports on Survey activities in the state. Activities such as gathering, interpreting and publishing hydrologic data and scientific information in support of state and local water resources planning, management, and regulatory programs are presented. The water resources programs described are funded through cooperative agreements with state and local agencies and through special agreements with other federal agencies. Cooperative programs are reviewed annually to insure that state, local and national priorities are being met. Groundwater withdrawals are estimated to have produced water level declines of 150 ft and more for large areas of the northeast and central Coastal Plain. Future demands for water quality and quantity are discussed.

Turner, J. F., (compiler); Deckard, R.J.

1986-01-01

374

[Current aspects of the noise problem in aviation medicine].  

PubMed

The authors discuss the problem of improvement the noise factor prevention in aviation medicine. The analysis of the real acoustic load on aviation engineer specialists, performing maintenance of the modern military aircraft have been given. The authors show the importance of the approach to the aviation noise as an ecological significant factor, that means taking into account the acoustic load during work time as well as during rest-sleep periods. The authors suggested the advanced complex of the preventive measures for the purpose of optimization of the noise exposure on the aviation specialists. PMID:8677650

Vorob'ev, O A; Krylov, Iu V; Zaritski?, V V; Skrebnev, S V

1996-02-01

375

[Progress in synthesis technologies and application of aviation biofuels].  

PubMed

Development of aviation biofuels has attracted great attention worldwide because that the shortage of fossil resources has become more and more serious. In the present paper, the development background, synthesis technologies, current application status and existing problems of aviation biofuels were reviewed. Several preparation routes of aviation biofuels were described, including Fischer-Tropsch process, catalytic hydrogenation and catalytic cracking of bio-oil. The status of flight tests and commercial operation were also introduced. Finally the problems for development and application of aviation biofuels were stated, and some accommodation were proposed. PMID:23789270

Sun, Xiaoying; Liu, Xiang; Zhao, Xuebing; Yang, Ming; Liu, Dehua

2013-03-01

376

Survey of trace elements in coals and coal-related materials by neutron activation analysis  

USGS Publications Warehouse

Utilizing primarily instrumental neutron activation analysis (INAA) and other analytical methods as many as 61 elements were quantitatively surveyed in 170 U.S. whole coals, 70 washed coals, and 40 bench samples. Data on areal and vertical distributions in various regions were obtained along with extensive information on the mode of occurrence of various elements in the coal matrix itself. ?? 1977 Akade??miai Kiado??.

Ruch, R.R.; Cahill, R.A.; Frost, J.K.; Camp, L.R.; Gluskoter, H.J.

1977-01-01

377

Understanding Sexual Activity and Chlamydia Testing Rate Based on Linked National Survey and Medicaid Claims Data  

PubMed Central

Background Monitoring adherence to national recommendations for annual chlamydia screening of female adolescents and young adult women is important for targeting quality improvement interventions to improve low screening rates. However, accurate measurement of rates may vary depending on the data source used to determine eligible sexually-active women. Methods The 2001–2004 NHANES data linked with Medicaid administrative data by respondent’s unique identifier, the 2011–2012 NHANES data, and the 2004 and 2010 Medicaid data were used in this cross-sectional analysis. We defined self-reported sexual activity by self-reported sexual behaviors, claim-identified sexual activity by reproductive-related claims among women who had ? one healthcare claim, HEDIS-defined sexual activity by reproductive-related claims among women who were enrolled in Medicaid for ?330 days and had ? one healthcare claim, and chlamydia tests by claims submitted in the 12 months prior to the survey interview. Results Of Medicaid women aged 18–25 years, 91.5% self-reported to be sexually-active. Of self-reported sexually-active women aged 18–25 years, 92.0% had ? one healthcare claim in the 12 months prior to the survey interview; of this subpopulation, only 58.8% were enrolled in Medicaid for ? 330 days in the 12 months prior to the survey interview; of this further subpopulation, 74.1% had healthcare claims identifying them as sexually-active in the 12 months prior to the survey interview. Of HEDIS-defined sexually-active women, 42.4% had chlamydia testing. Conclusion Our study suggests that the number of sexually-active women aged 18–25 years used as the denominator in the chlamydia testing measure could be significantly different, depending upon the definition applied and the data used. Our data highlight the limited representativeness of Medicaid population in the current HEDIS measure on chlamydia testing when a high proportion of women who were enrolled in Medicaid for <330 days had been excluded from the measure. The interventions that can improve the proportion of women who were enrolled in Medicaid for ? 330 days among all young Medicaid women are needed not only for improving health care services, but also for measuring quality of healthcare. PMID:25875858

Tao, Guoyu; Hua, Jennifer; Chen, Jessica L.

2015-01-01

378

American Time Use Survey: Sleep Time and Its Relationship to Waking Activities  

PubMed Central

Study Objectives: To gain some insight into how various behavioral (lifestyle) factors influence sleep duration, by investigation of the relationship of sleep time to waking activities using the American Time Use Survey (ATUS). Design: Cross-sectional data from ATUS, an annual telephone survey of a population sample of US citizens who are interviewed regarding how they spent their time during a 24-hour period between 04:00 on the previous day and 04:00 on the interview day. Participants: Data were pooled from the 2003, 2004, and 2005 ATUS databases involving N=47,731 respondents older than 14 years of age. Interventions: N/A Results: Adjusted multiple linear regression models showed that the largest reciprocal relationship to sleep was found for work time, followed by travel time, which included commute time. Only shorter than average sleepers (<7.5 h) spent more time socializing, relaxing, and engaging in leisure activities, while both short (<5.5 h) and long sleepers (?8.5 h) watched more TV than the average sleeper. The extent to which sleep time was exchanged for waking activities was also shown to depend on age and gender. Sleep time was minimal while work time was maximal in the age group 45–54 yr, and sleep time increased both with lower and higher age. Conclusions: Work time, travel time, and time for socializing, relaxing, and leisure are the primary activities reciprocally related to sleep time among Americans. These activities may be confounding the frequently observed association between short and long sleep on one hand and morbidity and mortality on the other hand and should be controlled for in future studies. Citation: Basner M; Fomberstein KM; Razavi FM; Banks S; William JH; Rosa RR; Dinges DF. American time use survey: sleep time and its relationship to waking activities. SLEEP 2007;30(9):1085-1095. PMID:17910380

Basner, Mathias; Fomberstein, Kenneth M.; Razavi, Farid M.; Banks, Siobhan; William, Jeffrey H.; Rosa, Roger R.; Dinges, David F.

2007-01-01

379

49 CFR 1511.7 - Remittance of Aviation Security Infrastructure Fees.  

Code of Federal Regulations, 2014 CFR

... Remittance of Aviation Security Infrastructure Fees. 1511.7 Section 1511...PROCEDURAL RULES AVIATION SECURITY INFRASTRUCTURE FEE § 1511.7 Remittance of Aviation Security Infrastructure Fees. (a) No later...

2014-10-01

380

49 CFR 1511.7 - Remittance of Aviation Security Infrastructure Fees.  

Code of Federal Regulations, 2013 CFR

... Remittance of Aviation Security Infrastructure Fees. 1511.7 Section 1511...PROCEDURAL RULES AVIATION SECURITY INFRASTRUCTURE FEE § 1511.7 Remittance of Aviation Security Infrastructure Fees. (a) No later...

2013-10-01

381

49 CFR 1511.7 - Remittance of Aviation Security Infrastructure Fees.  

Code of Federal Regulations, 2010 CFR

... Remittance of Aviation Security Infrastructure Fees. 1511.7 Section 1511...PROCEDURAL RULES AVIATION SECURITY INFRASTRUCTURE FEE § 1511.7 Remittance of Aviation Security Infrastructure Fees. (a) No later...

2010-10-01

382

49 CFR 1511.7 - Remittance of Aviation Security Infrastructure Fees.  

Code of Federal Regulations, 2011 CFR

... Remittance of Aviation Security Infrastructure Fees. 1511.7 Section 1511...PROCEDURAL RULES AVIATION SECURITY INFRASTRUCTURE FEE § 1511.7 Remittance of Aviation Security Infrastructure Fees. (a) No later...

2011-10-01

383

49 CFR 1511.7 - Remittance of Aviation Security Infrastructure Fees.  

Code of Federal Regulations, 2012 CFR

... Remittance of Aviation Security Infrastructure Fees. 1511.7 Section 1511...PROCEDURAL RULES AVIATION SECURITY INFRASTRUCTURE FEE § 1511.7 Remittance of Aviation Security Infrastructure Fees. (a) No later...

2012-10-01

384

78 FR 35043 - Aviation Security Advisory Committee Charter Renewal and Request for Applicants  

Federal Register 2010, 2011, 2012, 2013, 2014

...Docket No. TSA-2011-0008] Aviation Security Advisory Committee Charter Renewal...renewal of the charter for the Aviation Security Advisory Committee (ASAC...membership as stated in the Aviation Security Advisory Committee Charter...

2013-06-11

385

LINE PILOTS' ATTITUDES ABOUT AND EXPERIENCE WITH FLIGHT DECK AUTOMATION: RESULTS OF AN INTERNATIONAL SURVEY AND PROPOSED GUIDELINES  

Microsoft Academic Search

A survey of line pilots' attitudes about flight deck automation was conducted by the Royal Air Force Institute of Aviation Medicine (RAF IAM, Farnborough, UK) under the sponsorship of the United Kingdom's Civil Aviation Authority and in cooperation with IATA (the International Air Transport Association). Survey freehand comments given by pilots operating 13 types of commercial transports across five manufacturers

Marianne Rudisill

386

75 FR 34520 - The Future of Aviation Advisory Committee (FAAC) Aviation Safety Subcommittee; Notice of Meeting  

Federal Register 2010, 2011, 2012, 2013, 2014

...challenges, and opportunities of the global economy. The Aviation Safety...develop a list of priority safety issues to be referred to the full committee...and identification of priority issues for the second Subcommittee...Develop a list of priority safety issues to be referred to the full...

2010-06-17

387

2013 aircrew, avionics, and operations survey, part 1.  

PubMed

Air medical transport services (AMTS) depend on the teamwork of aviation professionals, medical caregivers, communications specialists, maintenance staff, and administrative personnel to facilitate the safe medical transportation and care to critically ill and injured patients across the world. Consisting of respondents based in the United States, this 2013 survey revisits contemporary AMTS aircrew (pilot, aviator) experience, compensation, benefits, training, and safety in the industry compared to a survey conducted in 2000. PMID:24182879

Greene, Michael J

2013-01-01

388

Aviation System Analysis Capability Executive Assistant Design  

NASA Technical Reports Server (NTRS)

In this technical document, we describe the design developed for the Aviation System Analysis Capability (ASAC) Executive Assistant (EA) Proof of Concept (POC). We describe the genesis and role of the ASAC system, discuss the objectives of the ASAC system and provide an overview of components and models within the ASAC system, and describe the design process and the results of the ASAC EA POC system design. We also describe the evaluation process and results for applicable COTS software. The document has six chapters, a bibliography, three appendices and one attachment.

Roberts, Eileen; Villani, James A.; Osman, Mohammed; Godso, David; King, Brent; Ricciardi, Michael

1998-01-01

389

A psychologist's view of validating aviation systems  

NASA Technical Reports Server (NTRS)

All systems, no matter what they are designed to do, have shortcomings that may make them less productive than was hoped during the initial development. Such shortcomings can arise at any stage of development: from conception to the end of the implementation life cycle. While systems failure and errors of a lesser magnitude can occur as a function of mechanical or software breakdown, the majority of such problems, in aviation are usually laid on the shoulders of the human operator and, to a lesser extent, on human factors. The operator bears the responsibility and blame even though, from a human factors perspective, error may have been designed into the system. Human factors is not a new concept in aviation. The name may be new, but the issues related to operators in the loop date back to the industrial revolution of the nineteenth century and certainly to the aviation build-up for World War I. During this first global confrontation, military services from all sides discovered rather quickly that poor selection and training led to drastically increased personnel losses. While hardware design became an issue later, the early efforts were primarily focused on increased care in pilot selection and on their training. This actually involved early labor-intensive simulation, using such devices as sticks and chairs mounted on rope networks which could be manually moved in response to control input. The use of selection criteria and improved training led to more viable person-machine systems. More pilots survived training and their first ten missions in the air, a rule of thumb arrived at by experience which predicted ultimate survival better than any other. This rule was to hold through World War II. At that time, personnel selection and training became very sophisticated based on previous standards. Also, many psychologists were drafted into Army Air Corps programs which were geared towards refining the human factor. However, despite the talent involved in these programs and the tremendous build-up of aviation during the war, there were still aircraft designs that were man killers (no sexism implied since all combat pilots were men). One classic design error that was identified fifty years ago was the multipointer altimeter, which could easily be misread especially by a pilot under considerable task load. It has led to flying fully operational aircraft into the terrain. The authors of the research which formally identified this problem put 'Human Errors' in quotes to express their dissatisfaction with the traditional approach to accident investigation. It traditionally places the burden of guilt on the operator. Some of these altimeters still exist in older aircraft to this day.

Stein, Earl S.; Wagner, Dan

1994-01-01

390

BoM Aviation Fog Case Exercise  

NSDL National Science Digital Library

This case study focuses on a potential fog event in Melbourne, Australia on the sixth and seventh of April, 2008. The key aim of this module is to step through the forecast process during a potential fog event as an aviation forecaster with the Australian Bureau of Meteorology. This involves consideration of model guidance and consideration, identification of potential areas of fog, forecasting and "now"-casting both formation and clearance, and providing TAF updates throughout. It is presented in video format with audio commentary.

391

Advanced General Aviation Turbine Engine (GATE) study  

NASA Technical Reports Server (NTRS)

The small engine technology requirements suitable for general aviation service in the 1987 to 1988 time frame were defined. The market analysis showed potential United States engines sales of 31,500 per year providing that the turbine engine sales price approaches current reciprocating engine prices. An optimum engine design was prepared for four categories of fixed wing aircraft and for rotary wing applications. A common core approach was derived from the optimum engines that maximizes engine commonality over the power spectrum with a projected price competitive with reciprocating piston engines. The advanced technology features reduced engine cost, approximately 50 percent compared with current technology.

Smith, R.; Benstein, E. H.

1979-01-01

392

The General Aviation Propulsion (GAP) Program  

NASA Technical Reports Server (NTRS)

The General Aviation Propulsion (GAP) Program Turbine Engine Element focused on the development of an advanced small turbofan engine. Goals were good fuel consumption and thrust-to-weight ratio, and very low production cost. The resulting FJX-2 turbofan engine showed the potential to meet all of these goals. The development of the engine was carried through to proof of concept testing of a complete engine system. The proof of concept engine was ground tested at sea level and in altitude test chambers. A turboprop derivative was also sea-level tested.

2008-01-01

393

Recent trends in aviation turbine fuel properties  

NASA Technical Reports Server (NTRS)

Plots and tables, compiled from Department of Energy (and predecessor agency) inspection reports from 1969 to 1980, present ranges, averages, extremes, and trends for most of the 22 properties of Jet A aviation turbine fuel. In recent years, average values of aromatics content, mercaptan sulfur content, distillation temperature of 10 percent recovered, smoke point, and freezing point show small but recognizable trends toward their specification limits. About 80 percent of the fuel samples had at least one property near specification, defined as within a standard band about the specification limit. By far the most common near-specification properties were aromatics content, smoke point, and freezing point.

Friedman, R.

1982-01-01

394

Toxicology and drug testing in aviation.  

PubMed

The occupational physician working in the aviation industry must have some toxicological expertise. Airline production and maintenance operations, while similar to other large manufacturing facilities, use some exotic metals and composites with unique toxicity. Airport operations involve exposure of the ground crew to de-icing chemicals and jet fuels. Moreover, evaluation of drug test results requires a background in pharmacology, physiology, and laboratory methods. Frank response to employees and coordination of plans with industrial hygienists, managers, and employees are necessary when toxicological questions arise. This article also offers a Controversy (Substituted Urine: Offer a Retest or Not?). PMID:11872436

Green, Kendall B

2002-01-01

395

Regulation, Competition and Network Evolution in Aviation  

NASA Technical Reports Server (NTRS)

Our focus is the evolution of business strategies and network structure decisions in the commercial passenger aviation industry. The paper reviews the growth of hub-and-spoke networks as the dominant business model following deregulation in the latter part of the 20 century, followed by the emergence of value-based airlines as a global phenomenon at the end of the century. The paper highlights the link between airline business strategies and network structures, and examines the resulting competition between divergent network structure business models. In this context we discuss issues of market structure stability and the role played by competition policy.

Gillen, David; Morrison, William

2003-01-01

396

NASA general aviation crashworthiness seat development  

NASA Technical Reports Server (NTRS)

Three load limiting seat concepts for general aviation aircraft designed to lower the deceleration of the occupant in the event of a crash were sled tested and evaluated with reference to a standard seat. Dummy pelvis accelerations were reduced up to 50 percent with one of the concepts. Computer program MSOMLA (Modified Seat Occupant Model for Light Aircraft) was used to simulate the behavior of a dummy passenger in a NASA full-scale crash test of a twin engine light aircraft. A computer graphics package MANPLOT was developed to pictorially represent the occupant and seat motion.

Fasanella, E. L.; Alfaro-Bou, E.

1979-01-01

397

Aviation System Analysis Capability Executive Assistant Development  

NASA Technical Reports Server (NTRS)

In this technical document, we describe the development of the Aviation System Analysis Capability (ASAC) Executive Assistant (EA) Proof of Concept (POC) and Beta version. We describe the genesis and role of the ASAC system, discuss the objectives of the ASAC system and provide an overview of components and models in the ASAC system, and describe the design process and the results of the ASAC EA POC and Beta system development. We also describe the evaluation process and results for applicable COTS software. The document has seven chapters, a bibliography, and two appendices.

Roberts, Eileen; Villani, James A.; Anderson, Kevin; Book, Paul

1999-01-01

398

Nurse characteristics and attitudes to active voluntary euthanasia: a survey in the Australian Capital Territory.  

PubMed

While surveys of Australian nurses' attitudes to active voluntary euthanasia (AVE) have found that the majority are in favour, there may be important differences between subgroups of nurses. This paper investigates the role of the following nurse characteristics on nurses' attitudes to AVE: age, gender, religion, amount of contact with terminally ill patients, area of specialty, and degree of interest taken in the issue of AVE. A postal survey on AVE was carried out in late 1996 of 2000 randomly selected registered nurses from the Australian Capital Territory. Responses were received from 1218 nurses (61%). The survey included a question asking whether the law should be changed to allow doctors to take active steps to bring about a patient's death under some circumstances. Overall, 69% of respondents agreed that the law should be changed. Those nurses who were more likely to agree were under the age of 40 years, agnostic, atheist or of the Anglican religion, to have less contact with terminally ill patients, to work in the area of critical care or mental health, and to take less interest in the issue of AVE. Palliative care nurses were the only subgroup without a majority in favour (33%). There is other evidence in the euthanasia literature, that nurses and doctors are less in favour of AVE than the general public. Taken together with the present findings, it can be concluded that attitudes towards AVE are more favourable in people who have less contact with the terminally ill. PMID:9687132

Kitchener, B A

1998-07-01

399

1992 Ontario Survey of Public Health Nurses: perceptions of roles and activities.  

PubMed

A survey of public health nurses (PHNs) who work in official public health units in Ontario was undertaken to determine whether their perceptions of their roles and activities concurred with a 1990 Canadian Public Health Association report which describes the roles and qualifications of public health nursing in Canada. The survey questionnaire was completed by 1,849 PHNs in all 42 public health units (response rate = 85%). About one tenth of the PHNs reported no activity as a caregiver/service provider. Most PHNs reported being active in the roles of educator/consultant, social marketer, and facilitator/communicator/collaborator. The community developer, policy formulator, research/evaluator, and resource manager/planner/coordinator roles were less frequently performed, however, increased activities in such roles were expected in the future. Nurses said that they needed further preparation to perform the latter roles. These results have implications for deployment of PHNs as Ontario's health system shifts to community health and health promotion. PMID:7922961

Chambers, L W; Underwood, J; Halbert, T; Woodward, C A; Heale, J; Isaacs, S

1994-01-01

400

General Aviation Propulsion (GAP) Program, Turbine Engine System Element  

NASA Technical Reports Server (NTRS)

The goal of the General Aviation Propulsion (GAP) Program Turbine Engine System Elements is to conduct a shared resource project to develop an affordable gas turbine engine for use on 4 to 6 place, light aircraft that will lead to revitalization of the general aviation industry in the United States, creating many new, high-quality jobs.

1997-01-01

401

77 FR 44511 - Airworthiness Directives; Alpha Aviation Concept Limited Airplanes  

Federal Register 2010, 2011, 2012, 2013, 2014

...Road, RD 1, Cambridge 3493, New Zealand; telephone: +64 7 827 0528...which is the aviation authority for New Zealand, has issued DCA/R2000/41...which is the aviation authority for New Zealand, dated June 8, 2012; and...

2012-07-30

402

Aviation Electronics Technician 3 and 2. Rate Training Manual.  

ERIC Educational Resources Information Center

The manual is designed as a self-study text for use by personnel of the Navy and Naval Reserve who are preparing to meet professional requirements for advancement in the rating of Aviation Electronics Technician. The document opens with a review of leadership and qualifications for the Aviation Electronics Technician rating. Other chapters cover…

Bureau of Naval Personnel, Washington, DC.

403

The US aviation system to the year 2000  

NASA Technical Reports Server (NTRS)

The aviation system of the U.S. is described. Growth of the system over the past twenty years is analyzed. Long term and short term causes of air travel are discussed. The interaction of economic growth, airline yields, and quality of service in producing domestic traffic is shown. Forecasts are made for airline and general aviation growth. Potential airline scenarios are presented.

Austrotas, R. A.

1982-01-01

404

Toward a Naval Aviation Training Quality Feedback System  

ERIC Educational Resources Information Center

Naval aviation needs a unified standard for job-task analyses and data collection. Such a standard would facilitate consolidation of data across aviation platforms and permit evaluation of training content across phases of the training continuum. It would also make possible the construction of a training transfer evaluation system. The Navy cannot…

Phillips, Henry L., IV; Foster, T. Chris

2008-01-01

405

Aviation Maintenance Technology. Course Content Guides. FAA Approved Curriculum.  

ERIC Educational Resources Information Center

Course content guides are provided for the 30 courses in this aviation maintenance technology curriculum approved by the Federal Aviation Administration. Course titles are physics for technicians; aircraft information, regulations, and procedures; aircraft assembly; fundamentals of aircraft electronics; aircraft electrical components; aircraft…

Shrawder, Jack; And Others

406

Descriptive statistics tables from a detailed analysis of the National Human Activity Pattern Survey (NHAPS) data  

SciTech Connect

Detailed results tables are presented from an unweighted statistical analysis of selected portions of the 1992--1994 National Human Activity Pattern Survey (NHAPS) data base. This survey collected data on the potential exposure of Americans to important household pollutants. Randomly selected individuals (9,386) supplied minute-by-minute diaries spanning a 24-hour day as well as follow-up questions on specific exposure types. Selected 24-hour diary locations and activities, selected regroupings of the 24-hour diary locations, activities, and smoker-present categories, and most of the follow-up question variables in the NHAPS data base were statistically analyzed across 12 subgroups (gender, age, Hispanic, education, employment, census region, day-of-week, season, asthma, angina and bronchitis/emphysema). Overall statistics were also generated for the 9,386 total respondents. Tables show descriptive statistics (including frequency distributions) of time spent and frequency of occurrence in each of 39 locations and for 22 activities (that were experienced by more than 50 respondents), along with equivalent tables for 10 regrouped locations (Residence-Indoors, Residence-Outdoors, Inside Vehicle, Near Vehicle, Other Outdoor, Office/Factory, Mall/Store, Public Building, Bar/Restaurant, Other Indoor), seven regrouped activities and smoker present. Tables of frequency distributions of time spent in exposure activities, or the frequency of occurrence of exposure activities, as determined from the follow up questions that were analyzed are also presented. Detailed indices provide page numbers for each table. An Appendix contains a condensed listing of the questionnaires (Versions A and B for adults, child-direct and child-proxy interview types), including the question number, the NHAPS data base variable name, and the verbatim question text.

Tsang, A.M.; Klepeis, N.E.

1996-07-01

407

Will climate change increase transatlantic aviation turbulence?  

NASA Astrophysics Data System (ADS)

Atmospheric turbulence causes most weather-related aircraft incidents. Commercial aircraft encounter moderate-or-greater turbulence tens of thousands of times each year world-wide, injuring probably hundreds of passengers (occasionally fatally), costing airlines tens of millions of dollars, and causing structural damage to planes. Clear-air turbulence is especially difficult to avoid, because it cannot be seen by pilots or detected by satellites or on-board radar. Clear-air turbulence is linked to atmospheric jet streams, which are projected to be strengthened by anthropogenic climate change. However, the response of clear-air turbulence to climate change has not previously been studied. Here we show using computer simulations that clear-air turbulence changes significantly within the transatlantic flight corridor when the concentration of carbon dioxide in the atmosphere is doubled. At cruise altitudes within 50-75°N and 10-60°W in winter, most clear-air turbulence measures show a 10-40% increase in the median strength of turbulence and a 40-170% increase in the frequency of occurrence of moderate-or-greater turbulence. Our results suggest that climate change will lead to bumpier transatlantic flights by the middle of this century. Journey times may lengthen and fuel consumption and emissions may increase. Aviation is partly responsible for changing the climate, but our findings show for the first time how climate change could affect aviation.

Williams, Paul; Joshi, Manoj

2013-04-01

408

Will Climate Change Increase Transatlantic Aviation Turbulence?  

NASA Astrophysics Data System (ADS)

Atmospheric turbulence causes most weather-related aircraft incidents. Commercial aircraft encounter moderate-or-greater turbulence tens of thousands of times each year world-wide, injuring probably hundreds of passengers (occasionally fatally), costing airlines tens of millions of dollars, and causing structural damage to planes. Clear-air turbulence is especially difficult to avoid, because it cannot be seen by pilots or detected by satellites or on-board radar. Clear-air turbulence is linked to atmospheric storm tracks and jet streams, which are projected to be strengthened by anthropogenic climate change. However, the response of clear-air turbulence to climate change has not previously been studied. Here we show using computer simulations that clear-air turbulence changes significantly within the transatlantic flight corridor when the concentration of carbon dioxide in the atmosphere is doubled. At cruise altitudes within 50-75°N and 10-60°W in winter, most clear-air turbulence measures show a 10-40% increase in the median strength of turbulence and a 40-170% increase in the frequency of occurrence of moderate-or-greater turbulence. Our results suggest that climate change will lead to bumpier transatlantic flights by the middle of this century. Journey times may lengthen and fuel consumption and emissions may increase. Aviation is partly responsible for changing the climate, but our findings show for the first time how climate change could affect aviation.

Williams, P. D.; Joshi, M. M.

2013-12-01

409

Q-FANSTM for general aviation aircraft  

NASA Technical Reports Server (NTRS)

Continued growth of general aviation over the next 10 to 15 years is dependent on continuing improvement in aircraft safety, utility, performance and cost. Moreover, these advanced aircraft will need to conform to expected government regulations controlling propulsion system emissions and noise levels. An attractive compact low noise propulsor concept, the Q-FANTM when matched to piston, rotary combustion, or gas turbine engines opens up the exciting prospect of new, cleaner airframe designs for the next generation of general aviation aircraft which will provide these improvements and meet the expected noise and pollution restriction of the 1980 time period. New Q-FAN methodology which was derived to predict Q-FAN noise, weight and cost is presented. Based on this methodology Q-FAN propulsion system performance, weight, noise, and cost trends are discussed. Then the impact of this propulsion system type on the complete aircraft is investigated for several representative aircraft size categories. Finally, example conceptual designs for Q-FAN/engine integration and aircraft installations are presented.

Worobel, R.; Mayo, M. G.

1973-01-01

410

Cockpit Technology for Prevention of General Aviation Runway Incursions  

NASA Technical Reports Server (NTRS)

General aviation accounted for 74 percent of runway incursions but only 57 percent of the operations during the four-year period from fiscal year (FY) 2001 through FY2004. Elements of the NASA Runway Incursion Prevention System were adapted and tested for general aviation aircraft. Sixteen General Aviation pilots, of varying levels of certification and amount of experience, participated in a piloted simulation study to evaluate the system for prevention of general aviation runway incursions compared to existing moving map displays. Pilots flew numerous complex, high workload approaches under varying weather and visibility conditions. A rare-event runway incursion scenario was presented, unbeknownst to the pilots, which represented a typical runway incursion situation. The results validated the efficacy and safety need for a runway incursion prevention system for general aviation aircraft.

Prinzel, Lawrence J., III; Jones, Denise R.

2007-01-01

411

Sampling and analysis plan for the preoperational environmental survey for the immobilized low activity waste (ILAW) project W-465  

SciTech Connect

This document provides a detailed description of the Sampling and Analysis Plan for the Preoperational Survey to be conducted at the Immobilized Low Activity Waste (ILAW) Project Site in the 200 East Area.

Mitchell, R.M.

1998-09-28

412

Cluster Report or Survey Description Date due to IEA Responsible person(s) Comments Summer Activity Report  

E-print Network

Cluster Report or Survey Description Date due to IEA Responsible person(s) Comments Summer Activity, data is provided by IEA for report completion. Fall Activity Report Activity reports for Fall, 2013 April 4, 2014 Academic Department Heads By January 17, 2014, data is provided by IEA for report

Fernandez, Eduardo

413

CTEPP DATA COLLECTION FORM 08 (PERIODS 1-5 AND FOOD, FRUIT & VEG): CHILD ACTIVITY DIARY AND FOOD SURVEY  

EPA Science Inventory

This data collection form is divided into two parts: Child Activity Diary and Food Survey. The Child Activity Diary collects information on the child's activities at home over the 48-hr monitoring period. The diary is divided into five time periods over the 48-hr monitoring inter...

414

CTEPP DATA COLLECTION FORM 09 (PERIODS 1-4 AND FOOD, FRUIT & VEG): CHILD ACTIVITY DIARY AND FOOD SURVEY  

EPA Science Inventory

This data collection form is divided into two parts: Child Activity Diary and Food Survey. The Child Activity Diary collects information on the child's activities at home over the 48-hr monitoring period. The diary is divided into four time periods over the 48-hr monitoring inter...

415

Cosmic X-ray Surveys of Distant Active Galaxies: The Demographics, Physics, and Ecology of Growing Supermassive Black Holes  

E-print Network

We review results from cosmic X-ray surveys of active galactic nuclei (AGNs) over the past ~ 15 yr that have dramatically improved our understanding of growing supermassive black holes (SMBHs) in the distant universe. First, we discuss the utility of such surveys for AGN investigations and the capabilities of the missions making these surveys, emphasizing Chandra, XMM-Newton, and NuSTAR. Second, we briefly describe the main cosmic X-ray surveys, the essential roles of complementary multiwavelength data, and how AGNs are selected from these surveys. We then review key results from these surveys on the AGN population and its evolution ("demographics"), the physical processes operating in AGNs ("physics"), and the interactions between AGNs and their environments ("ecology"). We conclude by describing some significant unresolved questions and prospects for advancing the field.

Brandt, W N

2015-01-01

416

Cosmic X-ray surveys of distant active galaxies. The demographics, physics, and ecology of growing supermassive black holes  

NASA Astrophysics Data System (ADS)

We review results from cosmic X-ray surveys of active galactic nuclei (AGNs) over the past years that have dramatically improved our understanding of growing supermassive black holes in the distant universe. First, we discuss the utility of such surveys for AGN investigations and the capabilities of the missions making these surveys, emphasizing Chandra, XMM-Newton, and NuSTAR. Second, we briefly describe the main cosmic X-ray surveys, the essential roles of complementary multiwavelength data, and how AGNs are selected from these surveys. We then review key results from these surveys on the AGN population and its evolution ("demographics"), the physical processes operating in AGNs ("physics"), and the interactions between AGNs and their environments ("ecology"). We conclude by describing some significant unresolved questions and prospects for advancing the field.

Brandt, W. N.; Alexander, D. M.

2015-01-01

417

Recommended survey designs for occupancy modelling using motion-activated cameras: insights from empirical wildlife data.  

PubMed

Motion-activated cameras are a versatile tool that wildlife biologists can use for sampling wild animal populations to estimate species occurrence. Occupancy modelling provides a flexible framework for the analysis of these data; explicitly recognizing that given a species occupies an area the probability of detecting it is often less than one. Despite the number of studies using camera data in an occupancy framework, there is only limited guidance from the scientific literature about survey design trade-offs when using motion-activated cameras. A fuller understanding of these trade-offs will allow researchers to maximise available resources and determine whether the objectives of a monitoring program or research study are achievable. We use an empirical dataset collected from 40 cameras deployed across 160 km(2) of the Western Slope of Colorado, USA to explore how survey effort (number of cameras deployed and the length of sampling period) affects the accuracy and precision (i.e., error) of the occupancy estimate for ten mammal and three virtual species. We do this using a simulation approach where species occupancy and detection parameters were informed by empirical data from motion-activated cameras. A total of 54 survey designs were considered by varying combinations of sites (10-120 cameras) and occasions (20-120 survey days). Our findings demonstrate that increasing total sampling effort generally decreases error associated with the occupancy estimate, but changing the number of sites or sampling duration can have very different results, depending on whether a species is spatially common or rare (occupancy = ?) and easy or hard to detect when available (detection probability = p). For rare species with a low probability of detection (i.e., raccoon and spotted skunk) the required survey effort includes maximizing the number of sites and the number of survey days, often to a level that may be logistically unrealistic for many studies. For common species with low detection (i.e., bobcat and coyote) the most efficient sampling approach was to increase the number of occasions (survey days). However, for common species that are moderately detectable (i.e., cottontail rabbit and mule deer), occupancy could reliably be estimated with comparatively low numbers of cameras over a short sampling period. We provide general guidelines for reliably estimating occupancy across a range of terrestrial species (rare to common: ? = 0.175-0.970, and low to moderate detectability: p = 0.003-0.200) using motion-activated cameras. Wildlife researchers/managers with limited knowledge of the relative abundance and likelihood of detection of a particular species can apply these guidelines regardless of location. We emphasize the importance of prior biological knowledge, defined objectives and detailed planning (e.g., simulating different study-design scenarios) for designing effective monitoring programs and research studies. PMID:25210658

Shannon, Graeme; Lewis, Jesse S; Gerber, Brian D

2014-01-01

418

Recommended survey designs for occupancy modelling using motion-activated cameras: insights from empirical wildlife data  

PubMed Central

Motion-activated cameras are a versatile tool that wildlife biologists can use for sampling wild animal populations to estimate species occurrence. Occupancy modelling provides a flexible framework for the analysis of these data; explicitly recognizing that given a species occupies an area the probability of detecting it is often less than one. Despite the number of studies using camera data in an occupancy framework, there is only limited guidance from the scientific literature about survey design trade-offs when using motion-activated cameras. A fuller understanding of these trade-offs will allow researchers to maximise available resources and determine whether the objectives of a monitoring program or research study are achievable. We use an empirical dataset collected from 40 cameras deployed across 160 km2 of the Western Slope of Colorado, USA to explore how survey effort (number of cameras deployed and the length of sampling period) affects the accuracy and precision (i.e., error) of the occupancy estimate for ten mammal and three virtual species. We do this using a simulation approach where species occupancy and detection parameters were informed by empirical data from motion-activated cameras. A total of 54 survey designs were considered by varying combinations of sites (10–120 cameras) and occasions (20–120 survey days). Our findings demonstrate that increasing total sampling effort generally decreases error associated with the occupancy estimate, but changing the number of sites or sampling duration can have very different results, depending on whether a species is spatially common or rare (occupancy = ?) and easy or hard to detect when available (detection probability = p). For rare species with a low probability of detection (i.e., raccoon and spotted skunk) the required survey effort includes maximizing the number of sites and the number of survey days, often to a level that may be logistically unrealistic for many studies. For common species with low detection (i.e., bobcat and coyote) the most efficient sampling approach was to increase the number of occasions (survey days). However, for common species that are moderately detectable (i.e., cottontail rabbit and mule deer), occupancy could reliably be estimated with comparatively low numbers of cameras over a short sampling period. We provide general guidelines for reliably estimating occupancy across a range of terrestrial species (rare to common: ? = 0.175–0.970, and low to moderate detectability: p = 0.003–0.200) using motion-activated cameras. Wildlife researchers/managers with limited knowledge of the relative abundance and likelihood of detection of a particular species can apply these guidelines regardless of location. We emphasize the importance of prior biological knowledge, defined objectives and detailed planning (e.g., simulating different study-design scenarios) for designing effective monitoring programs and research studies. PMID:25210658

Lewis, Jesse S.; Gerber, Brian D.

2014-01-01

419

A Deep-Wide Far-Infrared Survey of Cosmological Star Formation and AGN Activity  

NASA Astrophysics Data System (ADS)

Spitzer is creating a vast legacy of 24 micron imaging, with hundreds of thousands of sources detected at cosmological distances. In principle, 24 micron data are the most sensitive probe of dust-enshrouded star formation and distant active galactic nuclei. In practice, at z > 1, they sample mid-infrared wavelengths complex in structure (PAH emission and silicate absorption) and physics (PAH excitation, metallicity dependence, extinction, warm dust and hidden AGN). Other data are needed to understand MIR emission, to calibrate its relation to star formation, to establish its dependence on other galaxy properties, to measure how many atypical objects there are, and to learn how to account for them in conclusions drawn from deep surveys. We propose a program of very deep MIPS imaging geared toward 70 micron detection of 1000 "normal" IR-luminous galaxies at 0.5 < z < 2.5 at wavelengths which trace thermal dust emission which more directly correlates with physical properties of interest such as star formation rates. We will survey 2200 square arcmin in three premier deep survey fields using far-infrared, radio and submillimeter data to measure bolometric luminosities, dust temperatures and masses, to quantify the population of Compton-obscured AGN, and to calibrate the use of 24 micron data for studying high redshift galaxy evolution.

Dickinson, Mark; Alexander, David; Bell, Eric; Brandt, Niel; Calzetti, Daniela; Casertano, Stefano; Chapman, Scott; Chary, Ranga-Ram; Daddi, Emanuele; Davis, Mark; Dole, Hervé; Dunlop, James; Eisenhardt, Peter; Elbaz, David; Faber, Sandra; Fazio, Giovanni; Ferguson, Henry; Frayer, David; Giavalisco, Mauro; Halpern, Mark; Huang, Jiasheng; Huynh, Minh; Ivison, Rob; Koekemoer, Anton; Le Floc'h, Emeric; Morrison, Glenn; Moustakas, Leonidas; Papovich, Casey; Pope, Alexandra; Renzini, Alvio; Rieke, George; Rix, Hans-Walter; Scott, Douglas; Smail, Ian; Yan, Haojing; van Dokkum, Pieter; van der Werf, Paul

2006-05-01

420

An Overview of the NASA Aviation Safety Program (AVSP) Systemwide Accident Prevention (SWAP) Human Performance Modeling (HPM) Element  

NASA Technical Reports Server (NTRS)

An overview is provided of the Human Performance Modeling (HPM) element within the NASA Aviation Safety Program (AvSP). Two separate model development tracks for performance modeling of real-world aviation environments are described: the first focuses on the advancement of cognitive modeling tools for system design, while the second centers on a prescriptive engineering model of activity tracking for error detection and analysis. A progressive implementation strategy for both tracks is discussed in which increasingly more complex, safety-relevant applications are undertaken to extend the state-of-the-art, as well as to reveal potential human-system vulnerabilities in the aviation domain. Of particular interest is the ability to predict the precursors to error and to assess potential mitigation strategies associated with the operational use of future flight deck technologies.

Foyle, David C.; Goodman, Allen; Hooley, Becky L.

2003-01-01

421

Aviation human factors research in U.S. universities: Potential contributions to national needs  

NASA Technical Reports Server (NTRS)

Univesity research can make vital contributions to national needs in aviation human factors (AHF). This article examines the types of expertise and facilities available in universities and explores how university capabilities complement the work of government laboratories. The AHF infrastructure is discussed and compared to other fields of applied research. Policy and funding issues are also examined. This study is based on a survey conducted by the author, which included site visits to several universities, telephone interviews with faculty members at other universities, and a search of the AHF research literature.

Key Dismukes, R.

1994-01-01

422

Evaluating Behaviorally Oriented Aviation Maintenance Resource Management (MRM) Training and Programs: Methods, Results, and Conclusions  

NASA Technical Reports Server (NTRS)

Assessment of the impact of Aviation Resource Management Programs on aviation culture and performance has compelled a considerable body of research (Taylor & Robertson, 1995; Taylor, 1998; Taylor & Patankar, 2001). In recent years new methods have been applied to the problem of maintenance error precipitated by factors such as the need for self-assessment of communication and trust. The present study - 2002 -- is an extension of that past work. This research project was designed as the conclusion of a larger effort to help understand, evaluate and validate the impact of Maintenance Resource Management (MRM) training programs, and other MRM interventions on participant attitudes, opinions, behaviors, and ultimately on enhanced safety performance. It includes research and development of evaluation methodology as well as examination of psychological constructs and correlates of maintainer performance. In particular, during 2002, three issues were addressed. First, the evaluation of two (independent & different) MRM programs for changing behaviors was undertaken. In one case we were able to further apply the approach to measuring written communication developed during 2001 (Taylor, 2002; Taylor & Thomas, 2003). Second, the MRM/TOQ surveys were made available for completion on the internet. The responses from these on-line surveys were automatically linked to a results calculator (like the one developed and described in Taylor, 2002) to aid industry users in analyzing and evaluating their local survey data on the internet. Third, the main trends and themes from our research about MRM programs over the past dozen years were reviewed.

Taylor, James C.; Thomas, Robert L., III

2003-01-01

423

THE COSMOS ACTIVE GALACTIC NUCLEUS SPECTROSCOPIC SURVEY. I. XMM-NEWTON COUNTERPARTS  

SciTech Connect

We present optical spectroscopy for an X-ray and optical flux-limited sample of 677 XMM-Newton selected targets covering the 2 deg{sup 2} Cosmic Evolution Survey field, with a yield of 485 high-confidence redshifts. The majority of the spectra were obtained over three seasons (2005-2007) with the Inamori Magellan Areal Camera and Spectrograph instrument on the Magellan (Baade) telescope. We also include in the sample previously published Sloan Digital Sky Survey spectra and supplemental observations with MMT/Hectospec. We detail the observations and classification analyses. The survey is 90% complete to flux limits of f {sub 0.5-10keV} > 8 x 10{sup -16} erg cm{sup -2} s{sup -1} and i {sup +} {sub AB} < 22, where over 90% of targets have high-confidence redshifts. Making simple corrections for incompleteness due to redshift and spectral type allows for a description of the complete population to i {sup +} {sub AB} < 23. The corrected sample includes a 57% broad emission line (Type 1, unobscured) active galactic nucleus (AGN) at 0.13 < z < 4.26, 25% narrow emission line (Type 2, obscured) AGN at 0.07 < z < 1.29, and 18% absorption line (host-dominated, obscured) AGN at 0 < z < 1.22 (excluding the stars that made up 4% of the X-ray targets). We show that the survey's limits in X-ray and optical fluxes include nearly all X-ray AGNs (defined by L {sub 0.5-10keV} > 3 x 10{sup 42} erg s{sup -1}) to z < 1, of both optically obscured and unobscured types. We find statistically significant evidence that the obscured-to-unobscured AGN ratio at z < 1 increases with redshift and decreases with luminosity.

Trump, Jonathan R.; Impey, Chris D.; Gabor, Jared; Kelly, Brandon C. [Steward Observatory, University of Arizona, 933 North Cherry Avenue, Tucson, AZ 85721 (United States); Elvis, Martin; Huchra, John P.; Civano, Francesca; Hao, Heng [Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138 (United States); McCarthy, Patrick J.; Scoville, Nick Z.; Smolcic, Vernesa [Observatories of the Carnegie Institute of Washington, Santa Barbara Street, Pasadena, CA 91101 (United States); Brusa, Marcella; Cappelluti, Nico; Hasinger, Gunther [Max Planck-Institut fuer Extraterrestrische Physik, Giessenbachstrasse 1, D-85748 Garching (Germany); Salvato, Mara; Capak, Peter [California Institute of Technology, MC 105-24, 1200 East California Boulevard, Pasadena, CA 91125 (United States); Comastri, Andrea [INAF-Osservatorio Astronomico di Bologna, via Ranzani 1, 40127 Bologna (Italy); Jahnke, Knud; Schinnerer, Eva [Max Planck Institut fuer Astronomie, Koenigstuhl 17, D-69117 Heidelberg (Germany); Lilly, Simon J. [Department of Physics, ETH Zurich, CH-8093 Zurich (Switzerland)

2009-05-10

424

The Southern 2MASS Active Galactic Nuclei Survey: Spectroscopic Follow-up with Six Degree Field  

NASA Astrophysics Data System (ADS)

The Two Micron All-Sky Survey (2MASS) has provided a uniform photometric catalog to search for previously unknown red active galactic nuclei (AGN) and Quasi-Stellar Objects (QSOs). We have extended the search to the southern equatorial sky by obtaining spectra for 1182 AGN candidates using the six degree field (6dF) multifibre spectrograph on the UK Schmidt Telescope. These were scheduled as auxiliary targets for the 6dF Galaxy Redshift Survey. The candidates were selected using a single color cut of J-Ks>2 to Ks<~15.5 and a galactic latitude of |b|>30°. 432 spectra were of sufficient quality to enable a reliable classification. 116 sources (~27%) were securely classified as type I AGN, 20 as probable type I AGN, and 57 as probable type II AGN. Most of them span the redshift range 0.0520%) than in any previous (mostly blue-selected) galaxy survey. A small fraction of the type I AGN could have their optical colors reddened by optically thin dust with AV<2mag relative to optically selected QSOs. A handful show evidence of excess far-infrared (IR) emission. The equivalent width (EW) and color distributions of the type I and II AGN are consistent with AGN unified models. In particular, the EW of the [Oiii] emission line weakly correlates with optical-near-IR color in each class of AGN, suggesting anisotropic obscuration of the AGN continuum. Overall, the optical properties of the 2MASS red AGN are not dramatically different from those of optically-selected QSOs. Our near-IR selection appears to detect the most near-IR luminous QSOs in the local universe to z~=0.6 and provides incentive to extend the search to deeper near-IR surveys.

Masci, Frank J.; Cutri, Roc M.; Francis, Paul J.; Nelson, Brant O.; Huchra, John P.; Heath Jones, D.; Colless, Matthew; Saunders, Will

2010-09-01

425

New active galactic nuclei detected in ROSAT All Sky Survey galaxies - The complete dataset  

E-print Network

The ROSAT ALL Sky Survey Bright Source Catalogue (RASS-BSC) has been correlated with the Catalogue of Principal Galaxies (PGC) to identify new extragalactic counterparts. 550 reliable optical counterparts have been detected. We took optical spectra of 176 X-ray candidates and companions at ESO, Calar Alto observatory and McDonald observatory. We discuss the redshift-, linewidth-, as well as optical and X-ray luminosity distribution of our ROSAT selected sample. 139 galaxies of our 166 X-ray counterparts have been identified as AGN with 93 being Seyfert 1 galaxies (61%). Eighteen of them (20%) are Narrow Line Seyfert 1 galaxies. 34 X-ray candidates (21%) are LINERs and only eight candidates (5%) are Seyfert 2. The ratio of the number of Seyfert 1 galaxies to Seyfert 2 galaxies is about 11/1. Optical surveys result in ratios of 1/1.4. The high fraction of detected Seyfert 1 galaxies is explained by the sensitivity of the ROSAT to soft X-rays which are heavily absorbed in type 2 AGN. Two X-ray candidates are HII-galaxies and 25 candidates (15%) show no signs of spectral activity. The AGN in our RASS selected sample exhibit slightly higher optical luminosities M_B = (-20.71 +- 1.75) mag and similar X-ray luminosities (log(L_X [erg/s]) = 42.9 +- 1.7) compared to other AGN surveys. The Halpha line width distribution (FWHM) of our newly identified ROSAT AGN sample is similar to the line widths distribution based on SDSS AGN. However, our newly identified RASS AGN have rather reddish colors explaining why they have not been detected before in ultraviolet or blue excess surveys.

W. Kollatschny; R. Kotulla; W. Pietsch; K. Bischoff; M. Zetzl

2008-04-11

426

78 FR 21008 - Proposed Information Collection (NCA Customer Satisfaction Surveys (Headstone/Marker) Activity...  

Federal Register 2010, 2011, 2012, 2013, 2014

...Information Collection (NCA Customer Satisfaction Surveys (Headstone/Marker...burden estimates relating to customer satisfaction surveys involving the National...Clearance for NCA, and IG Customer Satisfaction Surveys. OMB Control...

2013-04-08

427

75 FR 3539 - Agency Information Collection (NCA Customer Satisfaction Surveys (Headstone/Marker)) Activity...  

Federal Register 2010, 2011, 2012, 2013, 2014

...Information Collection (NCA Customer Satisfaction Surveys (Headstone/Marker...Clearance for NCA, and IG Customer Satisfaction Surveys. OMB Control Number...a. Next of Kin National Customer Satisfaction Survey (Mail to...

2010-01-21

428

Ethics Education in University Aviation Management Programs in the US: Part Two B--Statistical Analysis of Current Practice.  

ERIC Educational Resources Information Center

Part Two B of a three-part study examined how 40 universities with baccalaureate programs in aviation management include ethics education in the curricula. Analysis of responses suggests that there is strong support for ethics instruction and that active department head involvement leads to higher levels of planned ethics inclusion. (JOW)

Oderman, Dale

2003-01-01

429

Federal Aviation Administration retained savings program proposal  

SciTech Connect

Federal legislation allows federal agencies to retain up to 50% of the savings associated with implementing energy efficiency and water conservation measures and practices. Given budget pressures to reduce expenditures, the use of retained savings to fund additional projects represents a source of funds outside of the traditional budget cycle. The Southwest Region Federal Aviation Administration (FAA) has tasked Pacific Northwest National Laboratory (PNNL) to develop a model retained savings program for Southwest Region FAA use and as a prototype for consideration by the FAA. PNNL recommends the following steps be taken in developing a Southwest Region FAA retained savings program: Establish a retained savings mechanism. Determine the level at which the retained savings should be consolidated into a fund. The preliminary recommendation is to establish a revolving efficiency loan fund at the regional level. Such a mechanism allows some consolidation of savings to fund larger projects, while maintaining a sense of facility ownership in that the funds will remain within the region.

Hostick, D.J.; Larson, L.L. [Pacific Northwest National Lab., Richland, WA (United States); Hostick, C.J. [IBP, Inc., Pasco, WA (United States)

1998-03-01

430

AirDisaster.com: Aviation accidents  

NSDL National Science Digital Library

The Wall Street Journal calls AirDisaster.com "the number one aviation-safety resource on the net." In addition to offering ongoing coverage of current investigations, including that of EgyptAir Flight 990, the site provides links to full-text accident reports for dozens of air disasters over the last 40 years; a news archive of stories on recent airline accidents; eyewitness reports; feature articles by experts on air safety issues; Special Reports by the authors of the Website on particularly complex or illustrative airline failures, such as that of TWA 800 which exploded fifteen minutes after take-off from New York; and for those who have use of such materials, crash photographs and videos. Chris Kilroy, a pilot and student at Embry-Riddle Aeronautical University, and Darryl Morrell, an amateur historian of air disasters, maintain the site.

431

Potential global jamming transition in aviation networks  

E-print Network

In this paper, we propose a nonlinear transport model for an aviation network. The takeoff rate from an airport is characterized by the degree of ground congestion. Due to the effect of "surface congestion," the performance of an airport deteriorates because of inefficient configurations of waiting aircraft on the ground. Using a simple transport model, we performed simulations on a U. S. airport network and found a global jamming transition induced by local surface congestion. From a physical perspective, the mechanism of the transition is studied analytically and the resulting aircraft distribution is discussed considering system dynamics. This study shows that the knowledge of the relationship between a takeoff rate and a congestion level on the ground is vital for efficient air traffic operations.

Ezaki, Takahiro

2015-01-01

432

Characteristics of civil aviation atmospheric hazards  

NASA Technical Reports Server (NTRS)

Clear air turbulence, wake vortices, dry hail, and volcanic ash are hazards to civil aviation that have not been brought to the forefront of public attention by a catastrophic accident. However, these four hazards are responsible for major and minor injuries, emotional trauma, significant aircraft damage, and in route and terminal area inefficiency. Most injuries occur during clear air turbulence. There is significant aircraft damage for any volcanic ash encounter. Rolls induced by wake vortices occur near the ground. Dry hail often appears as an area of weak echo on the weather radar. This paper will present the meteorological, electromagnetic, and spatiotemporal characteristics of each hazard. A description of a typical aircraft encounter with each hazard will be given. Analyzed microwave and millimeter wave sensor systems to detect each hazard will be presented.

Marshall, Robert E.; Montoya, J.; Richards, Mark A.; Galliano, J.

1994-01-01

433

Outlook for alternative energy sources. [aviation fuels  

NASA Technical Reports Server (NTRS)

Predictions are made concerning the development of alternative energy sources in the light of the present national energy situation. Particular emphasis is given to the impact of alternative fuels development on aviation fuels. The future outlook for aircraft fuels is that for the near term, there possibly will be no major fuel changes, but minor specification changes may be possible if supplies decrease. In the midterm, a broad cut fuel may be used if current development efforts are successful. As synfuel production levels increase beyond the 1990's there may be some mixtures of petroleum-based and synfuel products with the possibility of some shale distillate and indirect coal liquefaction products near the year 2000.

Card, M. E.

1980-01-01

434

Active and Passive Hydrologic Tomographic Surveys:A Revolution in Hydrology (Invited)  

NASA Astrophysics Data System (ADS)

Mathematical forward or inverse problems of flow through geological media always have unique solutions if necessary conditions are givens. Unique mathematical solutions to forward or inverse modeling of field problems are however always uncertain (an infinite number of possibilities) due to many reasons. They include non-representativeness of the governing equations, inaccurate necessary conditions, multi-scale heterogeneity, scale discrepancies between observation and model, noise and others. Conditional stochastic approaches, which derives the unbiased solution and quantifies the solution uncertainty, are therefore most appropriate for forward and inverse modeling of hydrological processes. Conditioning using non-redundant data sets reduces uncertainty. In this presentation, we explain non-redundant data sets in cross-hole aquifer tests, and demonstrate that active hydraulic tomographic survey (using man-made excitations) is a cost-effective approach to collect the same type but non-redundant data sets for reducing uncertainty in the inverse modeling. We subsequently show that including flux measurements (a piece of non-redundant data set) collected in the same well setup as in hydraulic tomography improves the estimated hydraulic conductivity field. We finally conclude with examples and propositions regarding how to collect and analyze data intelligently by exploiting natural recurrent events (river stage fluctuations, earthquakes, lightning, etc.) as energy sources for basin-scale passive tomographic surveys. The development of information fusion technologies that integrate traditional point measurements and active/passive hydrogeophysical tomographic surveys, as well as advances in sensor, computing, and information technologies may ultimately advance our capability of characterizing groundwater basins to achieve resolution far beyond the feat of current science and technology.

Yeh, T. J.

2013-12-01

435

Comparison of global 3-D aviation emissions datasets  

NASA Astrophysics Data System (ADS)

Aviation emissions are unique from other transportation emissions, e.g., from road transportation and shipping, in that they occur at higher altitudes as well as at the surface. Aviation emissions of carbon dioxide, soot, and water vapor have direct radiative impacts on the Earth's climate system while emissions of nitrogen oxides (NOx), sulfur oxides, carbon monoxide (CO), and hydrocarbons (HC) impact air quality and climate through their effects on ozone, methane, and clouds. The most accurate estimates of the impact of aviation on air quality and climate utilize three-dimensional chemistry-climate models and gridded four dimensional (space and time) aviation emissions datasets. We compare five available aviation emissions datasets currently and historically used to evaluate the impact of aviation on climate and air quality: NASA-Boeing 1992, NASA-Boeing 1999, QUANTIFY 2000, Aero2k 2002, and AEDT 2006 and aviation fuel usage estimates from the International Energy Agency. Roughly 90% of all aviation emissions are in the Northern Hemisphere and nearly 60% of all fuelburn and NOx emissions occur at cruise altitudes in the Northern Hemisphere. While these datasets were created by independent methods and are thus not strictly suitable for analyzing trends they suggest that commercial aviation fuelburn and NOx emissions increased over the last two decades while HC emissions likely decreased and CO emissions did not change significantly. The bottom-up estimates compared here are consistently lower than International Energy Agency fuelburn statistics although the gap is significantly smaller in the more recent datasets. Overall the emissions distributions are quite similar for fuelburn and NOx with regional peaks over the populated land masses of North America, Europe, and East Asia. For CO and HC there are relatively larger differences. There are however some distinct differences in the altitude distribution of emissions in certain regions for the Aero2k dataset.

Olsen, S. C.; Wuebbles, D. J.; Owen, B.

2013-01-01

436

Variation in harbour porpoise activity in response to seismic survey noise.  

PubMed

Animals exposed to anthropogenic disturbance make trade-offs between perceived risk and the cost of leaving disturbed areas. Impact assessments tend to focus on overt behavioural responses leading to displacement, but trade-offs may also impact individual energy budgets through reduced foraging performance. Previous studies found no evidence for broad-scale displacement of harbour porpoises exposed to impulse noise from a 10 day two-dimensional seismic survey. Here, we used an array of passive acoustic loggers coupled with calibrated noise measurements to test whether the seismic survey influenced the activity patterns of porpoises remaining in the area. We showed that the probability of recording a buzz declined by 15% in the ensonified area and was positively related to distance from the source vessel. We also estimated received levels at the hydrophones and characterized the noise response curve. Our results demonstrate how environmental impact assessments can be developed to assess more subtle effects of noise disturbance on activity patterns and foraging efficiency. PMID:24850891

Pirotta, Enrico; Brookes, Kate L; Graham, Isla M; Thompson, Paul M

2014-05-01

437

Higher Education: Aviation Has Found a "Home" at Southern Illinois University.  

ERIC Educational Resources Information Center

Describes the organization of the aviation programs within the School of Technical Careers at Southern Illinois University at Carbondale. The associate degree programs in aviation include aviation and avionics technology and flight training. The baccalaureate programs include a variety of aviation specialization possibilities. (SA)

Newmyer, David A.

1980-01-01

438

Family Health Education and Its Place in the Training of Student Aviators: A Method.  

ERIC Educational Resources Information Center

The real mission of a flight surgeon is often misunderstood by military aviation students and their families. Because of his prominent position in student aviator selection and retention, a flight surgeon may represent a threat to an aviator's career. While the Army aviation training program is rapidly expanding, formal contacts between students…

Knapp, Stanley C.

439

The Aviation Safety Reporting System is a cooperative program established by the Federal Aviation Administration's Office of The Assistant Administrator for Aviation Safety, and administered by the National Aeronautics and Space Administration.  

E-print Network

is back again -- this time to talk about ground deicing and anti-icing issues in air carrier operationsThe Aviation Safety Reporting System is a cooperative program established by the Federal Aviation

440

CHROMOSPHERICALLY ACTIVE STARS IN THE RADIAL VELOCITY EXPERIMENT (RAVE) SURVEY. I. THE CATALOG  

SciTech Connect

RAVE, the unbiased magnitude limited survey of southern sky stars, contained 456,676 medium-resolution spectra at the time of our analysis. Spectra cover the Ca II infrared triplet (IRT) range, which is a known indicator of chromospheric activity. Our previous work classified all spectra using locally linear embedding. It identified 53,347 cases with a suggested emission component in calcium lines. Here, we use a spectral subtraction technique to measure the properties of this emission. Synthetic templates are replaced by the observed spectra of non-active stars to bypass the difficult computations of non-local thermal equilibrium profiles of the line cores and stellar parameter dependence. We derive both the equivalent width of the excess emission for each calcium line on a 5 Å wide interval and their sum EW{sub IRT} for ?44,000 candidate active dwarf stars with signal-to-noise ratio >20, with no cuts on the basis of the source of their emission flux. From these, ?14,000 show a detectable chromospheric flux with at least a 2? confidence level. Our set of active stars vastly enlarges previously known samples. Atmospheric parameters and, in some cases, radial velocities of active stars derived from automatic pipelines suffer from systematic shifts due to their shallower calcium lines. We re-estimate the effective temperature, metallicity, and radial velocities for candidate active stars. The overall distribution of activity levels shows a bimodal shape, with the first peak coinciding with non-active stars and the second with the pre-main-sequence cases. The catalog will be made publicly available with the next RAVE public data releases.

Žerjal, M.; Zwitter, T. [Faculty of Mathematics and Physics, University of Ljubljana, Jadranska 19, 1000 Ljubljana (Slovenia); Matijevi?, G. [Department of Astronomy and Astrophysics, Villanova University, 800 E Lancaster Avenue, Villanova, PA 19085 (United States); Strassmeier, K. G.; Siviero, A.; Steinmetz, M. [Leibniz-Institut für Astrophysik Potsdam (AIP), An der Sternwarte 16, D-14482 Potsdam (Germany); Bienaymé, O. [Observatoire astronomique de Strasbourg, Université de Strasbourg, CNRS, 11 rue de l'Université, F-67000 Strasbourg (France); Bland-Hawthorn, J. [Sydney Institute for Astronomy, School of Physics A28, Sydney, NSW 2006 (Australia); Boeche, C.; Grebel, E. K. [Astronomisches Rechen-Institut, Zentrum für Astronomie der Universität Heidelberg, Mönchhofstr. 12-14, D-69120 Heidelberg (Germany); Freeman, K. C. [Research School of Astronomy and Astrophysics, Australia National University, Weston Creek, Canberra, ACT 2611 (Australia); Kordopatis, G. [Institute of Astronomy, Cambridge University, Madingley Road, Cambridge CB3 0HA (United Kingdom); Munari, U. [INAF Osservatorio Astronomico di Padova, I-36012 Asiago (Italy); Navarro, J. F. [Department of Physics and Astronomy, University of Victoria, Victoria BC, V8P 5C2 (Canada); Parker, Q. A.; Reid, W. [Department of Physics and Astronomy, Macquarie University, Sydney, NSW 2109 (Australia); Seabroke, G. [Mullard Space Science Laboratory, University College London, Holmbury St Mary, Dorking, RH5 6NT (United Kingdom); Wyse, R. F. G., E-mail: marusa.zerjal@fmf.uni-lj.si [Johns Hopkins University, Homewood Campus, 3400 North Charles Street, Baltimore, MD 21218 (United States)

2013-10-20

441

Chromospherically Active Stars in the RAdial Velocity Experiment (RAVE) Survey. I. The Catalog  

NASA Astrophysics Data System (ADS)

RAVE, the unbiased magnitude limited survey of southern sky stars, contained 456,676 medium-resolution spectra at the time of our analysis. Spectra cover the Ca II infrared triplet (IRT) range, which is a known indicator of chromospheric activity. Our previous work classified all spectra using locally linear embedding. It identified 53,347 cases with a suggested emission component in calcium lines. Here, we use a spectral subtraction technique to measure the properties of this emission. Synthetic templates are replaced by the observed spectra of non-active stars to bypass the difficult computations of non-local thermal equilibrium profiles of the line cores and stellar parameter dependence. We derive both the equivalent width of the excess emission for each calcium line on a 5 Å wide interval and their sum EWIRT for ~44,000 candidate active dwarf stars with signal-to-noise ratio >20, with no cuts on the basis of the source of their emission flux. From these, ~14,000 show a detectable chromospheric flux with at least a 2? confidence level. Our set of active stars vastly enlarges previously known samples. Atmospheric parameters and, in some cases, radial velocities of active stars derived from automatic pipelines suffer from systematic shifts due to their shallower calcium lines. We re-estimate the effective temperature, metallicity, and radial velocities for candidate active stars. The overall distribution of activity levels shows a bimodal shape, with the first peak coinciding with non-active stars and the second with the pre-main-sequence cases. The catalog will be made publicly available with the next RAVE public data releases.

Žerjal, M.; Zwitter, T.; Matijevi?, G.; Strassmeier, K. G.; Bienaymé, O.; Bland-Hawthorn, J.; Boeche, C.; Freeman, K. C.; Grebel, E. K.; Kordopatis, G.; Munari, U.; Navarro, J. F.; Parker, Q. A.; Reid, W.; Seabroke, G.; Siviero, A.; Steinmetz, M.; Wyse, R. F. G.

2013-10-01

442

Audio-Visual Situational Awareness for General Aviation Pilots  

NASA Technical Reports Server (NTRS)

Weather is one of the major causes of general aviation accidents. Researchers are addressing this problem from various perspectives including improving meteorological forecasting techniques, collecting additional weather data automatically via on-board sensors and "flight" modems, and improving weather data dissemination and presentation. We approach the problem from the improved presentation perspective and propose weather visualization and interaction methods tailored for general aviation pilots. Our system, Aviation Weather Data Visualization Environment (AWE), utilizes information visualization techniques, a direct manipulation graphical interface, and a speech-based interface to improve a pilot's situational awareness of relevant weather data. The system design is based on a user study and feedback from pilots.

Spirkovska, Lilly; Lodha, Suresh K.; Clancy, Daniel (Technical Monitor)

2001-01-01

443

Transition, Training, and Assessment of Multispectral Composite Imagery in Support of the NWS Aviation Forecast Mission  

NASA Technical Reports Server (NTRS)

The NASA/Short-term Prediction, Research, and Transition (SPoRT) Program works closely with NOAA/NWS weather forecasters to transition unique satellite data and capabilities into operations in order to assist with nowcasting and short-term forecasting issues. Several multispectral composite imagery (i.e. RGB) products were introduced to users in the early 2000s to support hydrometeorology and aviation challenges as well as incident support. These activities lead to SPoRT collaboration with the GOES-R Proving Ground efforts where instruments such as MODIS (Aqua, Terra) and S-NPP/VIIRS imagers began to be used as near-realtime proxies to future capabilities of the Advanced Baseline Imager (ABI). One of the composite imagery products introduced to users was the Night-time Microphysics RGB, originally developed by EUMETSAT. SPoRT worked to transition this imagery to NWS users, provide region-specific training, and assess the impact of the imagery to aviation forecast needs. This presentation discusses the method used to interact with users to address specific aviation forecast challenges, including training activities undertaken to prepare for a product assessment. Users who assessed the multispectral imagery ranged from southern U.S. inland and coastal NWS weather forecast offices (WFOs), to those in the Rocky Mountain Front Range region and West Coast, as well as highlatitude forecasters of Alaska. These user-based assessments were documented and shared with the satellite community to support product developers and the broad users of new generation satellite data.

Fuell, Kevin; Jedlovec, Gary; Leroy, Anita; Schultz, Lori

2015-01-01

444

Impact of aviation emissions on the Arctic environment - GEM-AC model simulations  

NASA Astrophysics Data System (ADS)

The continuing decrease of ice cover over the Artic allows for the increase in shipping and industrial activities in the region. These activities lead to the increase of anthropogenic emissions from shipping, prospecting, exploration, and smelting. Emissions from shipping are dominant and their magnitude and impact on the Arctic environment have been addressed in recent publications. The objective of this study is investigate the impact of the increased demand for commercial aviation transport to the Arctic on the air quality near the ground as well as the impact of aviation emissions injected at cruise altitudes (9-11 km ) which in many cases will be above the tropopause. We will present results from the GEM-AC model simulations for several aviation emissions scenarios. GEM-AC (Global Environmental Multiscale model for Atmospheric Chemistry) is a chemical weather model based on the GEM model developed by the Meteorological Service of Canada for operational weather forecasting where air quality, free tropospheric, and stratospheric chemistry process are on-line and interactive. In vertical, the model domain is defined on hybrid levels from the surface to ~60km. The gas-phase chemistry includes detailed reactions of Ox, NOx, HOx, CO, CH4, NMVOCs, halocarbons, ClOx and BrO. Also, the model can address aerosol microphysics and gas-aerosol partitioning. The model will be run on a global variable grid with ~30 km uniform horizontal resolution over the Arctic.

Kaminski, J. W.; Porebska, M.; Semeniuk, K.; Lupu, A.

2013-12-01

445

Demonstration and implementation of ethanol as an aviation fuel. Final report  

SciTech Connect

The objectives of the program were to demonstrate the viability of ethanol as an aviation fuel at appropriate locations and audiences in the participating Biomass Energy Program Regions, and to promote implementation projects in the area. Seven demonstrations were to be performed during the Summer 1995 through December 1996 period. To maximize the cost effectiveness of the program, additional corporate co-sponsorships were sought at each demonstration site and the travel schedule was arranged to take advantage of appropriate events taking place in the vicinity of the schedule events or enroute. This way, the original funded amount was stretched to cover another year of activities increasing the number of demonstrations from seven to thirty-nine. While the Renewable Aviation Fuels Development Center (RAFDC) contract focused on ethanol as an aviation fuel, RAFDC also promoted the broader use of ethanol as a transportation fuel. The paper summarizes locations and occasions, and gives a brief description of each demonstration/exhibit/presentation held during the term of the project. Most of the demonstrations took place at regularly scheduled air shows, such as the Oshkosh, Wisconsin Air Show. The paper also reviews current and future activities in the areas of certification, emission testing, the international Clean Airports Program, air pollution monitoring with instrumented aircraft powered by renewable fuels, training operation and pilot project on ethanol, turbine fuel research, and educational programs.

NONE

1998-01-01

446

The Impact of Active Consent Procedures on Nonresponse and Nonresponse Error in Youth Survey Data: Evidence from a New Experiment  

PubMed Central

This paper reports results from a student survey fielded using an experimental design with 14 Kentucky school districts. Seven of the fourteen districts were randomly assigned to implement the survey with active consent procedures; the other seven districts implemented the survey with passive consent procedures. We utilized our experimental design to investigate the impact of consent procedures on (a) participation rates, (b) demographic characteristic of the survey samples, and (c) estimates of ATOD use. We found that the use of active consent procedures resulted in reduced response rates, under-representation of male students and older students, and lower lifetime and past 30 day prevalence rates for most drugs and for most antisocial behaviors. Methodological implications of these findings are discussed, along with directions for further research. PMID:19506295

Courser, Matthew W.; Shamblen, Stephen R.; Lavrakas, Paul J.; Collins, David; Ditterline, Paul

2009-01-01

447

A geophysical survey of active volcanism in the Central and Southern Andes  

NASA Astrophysics Data System (ADS)

The subduction of the Nazca plate beneath the South American plate results in great earthquakes and active volcanism along the Andean margin. The Central Volcanic Zone (CVZ) between 15°S and 28°S and the Southern Volcanic Zone (SVZ) between 33°S and 46°S are separated by a zone of flat slab subduction and differ significantly in the manifestation of current volcanic activity. The CVZ has been considered less hazardous due to the few number of historical volcanic eruptions compared to the SVZ, yet it contains the largest mid-crustal magma body on Earth and erupted at least 10,000 km 3 of ignimbrite in the Late Miocene (10-1 Ma). In this dissertation, I use InSAR (interferometric synthetic aperture radar), thermal remote sensing, and seismology to investigate active volcanism in the Central and Southern Andes. InSAR and thermal remote sensing provide synoptic coverage along the volcanic arc, and seismic experiments allow further examination of selected volcanoes. I establish the first catalog of seismicity at Uturuncu volcano in Bolivia, where InSAR has observed continuous uplift since 1992, and find an unusually high seismicity rate for a Pleistocene volcano as well as swarm activity and triggered earthquakes. I then conduct a survey using satellite thermal infrared data to detect thermal hotspots related to volcanic activity throughout the CVZ and SVZ. I find hotspots at many volcanoes that had not previously been documented, with the CVZ containing more volcanoes with hotspots than the SVZ. One of the most thermally active volcanoes in the SVZ, Cordon Caulle volcano, experienced a large rhyodacitic eruption from 2011-2012. I use InSAR and petrology to model the pre-eruptive conditions at depth and co-eruptive processes and find that a large, long-lived crustal magma reservoir must be present beneath Cordon Caulle. Finally, I carry out an InSAR survey of volcanoes in southern Peru, completing a regional study of volcano deformation in the CVZ and allowing for a comprehensive comparative analysis between the CVZ and SVZ.

Jay, Jennifer Ann

448

Flight test and evaluation of Omega navigation for general aviation  

E-print Network

A seventy hour flight test program was accomplished to determine the suitability and accuracy of a low cost Omega navigation receiver in a general aviation aircraft. An analysis was made of signal availability in two widely ...

Hwoschinsky, Peter V.

1975-01-01

449

Comparative analysis of aviation safety information feedback systems  

E-print Network

In the aviation system, there are several feedback systems to prevent an accident. First of all, the accident and serious incident reporting and investigation system is established by the Chicago Convention. In general, ...

Funahashi, Yoshifuru

2010-01-01

450

77 FR 60887 - Airworthiness Directives; Alpha Aviation Concept Limited Airplanes  

Federal Register 2010, 2011, 2012, 2013, 2014

...Road, RD 1, Cambridge 3493, New Zealand; telephone: +64 7 827 0528...which is the aviation authority for New Zealand, dated June 8, 2012; and Alpha...Road, RD 1, Cambridge 3493, New Zealand; telephone: +64 7 827...

2012-10-05

451

14 CFR Appendix - Special Federal Aviation Regulation No. 97  

Code of Federal Regulations, 2014 CFR

...CERTIFICATION AND OPERATIONS OPERATING REQUIREMENTS: DOMESTIC, FLAG, AND SUPPLEMENTAL OPERATIONS Special Federal Aviation Regulation No. 97 Editorial Note: For the text of SFAR No. 97, see part 91 of this...

2014-01-01

452

Use of Loran-C for general aviation aircraft navigation  

E-print Network

This report describes an extensive evaluation of Loran-C for use by general aviation. Flight, ground, and antenna tests were done. Flight tests measured the accuracy and the ability to make approaches. Receiver reliability ...

Natarajan, Krishnan

1981-01-01

453

A general equilibrium analysis of climate policy for aviation  

E-print Network

Regulation of aviation's contribution to the global problem of climate change is increasingly likely in the near term, but the method agreed upon by most economists-a multi-sectoral market-based approach such as a cap and ...

Gillespie, Christopher Whittlesey

2011-01-01

454

76 FR 11308 - Aviation Noise Impacts Roadmap Annual Meeting  

Federal Register 2010, 2011, 2012, 2013, 2014

...scientific knowledge of the impact of aircraft noise on society in order to improve our...various aspects of noise impacts and develop optimal mitigation...how best to address the impacts of aviation noise on society. Issued in...

2011-03-01

455

14 CFR 153.5 - Aviation safety inspector airport access.  

Code of Federal Regulations, 2012 CFR

...Aviation safety inspector airport access. Airports, aircraft...110A free and uninterrupted access to public-use airports...FAA Form 110A do not require access media or identification media...other such duties as the FAA may...

2012-01-01

456

14 CFR 153.5 - Aviation safety inspector airport access.  

Code of Federal Regulations, 2013 CFR

...Aviation safety inspector airport access. Airports, aircraft...110A free and uninterrupted access to public-use airports...FAA Form 110A do not require access media or identification media...other such duties as the FAA may...

2013-01-01

457

14 CFR 153.5 - Aviation safety inspector airport access.  

Code of Federal Regulations, 2011 CFR

...Aviation safety inspector airport access. Airports, aircraft...110A free and uninterrupted access to public-use airports...FAA Form 110A do not require access media or identification media...other such duties as the FAA may...

2011-01-01

458

14 CFR 153.5 - Aviation safety inspector airport access.  

Code of Federal Regulations, 2014 CFR

...Aviation safety inspector airport access. Airports, aircraft...110A free and uninterrupted access to public-use airports...FAA Form 110A do not require access media or identification media...other such duties as the FAA may...

2014-01-01

459

14 CFR 153.5 - Aviation safety inspector airport access.  

Code of Federal Regulations, 2010 CFR

...Aviation safety inspector airport access. Airports, aircraft...110A free and uninterrupted access to public-use airports...FAA Form 110A do not require access media or identification media...other such duties as the FAA may...

2010-01-01

460

General aviation Omega navigation in the national airspace system  

E-print Network

Introduction: Omega navigation has great potential as a navigation sensor for general aviation aircraft. Advantages of Omega navigation include signal availability at all altitudes, and no need for overflying of various ...

Wischmeyer, Carl Edward

1976-01-01

461

NASA's Role in Aeronautics: A Workshop. Volume 4: General aviation  

NASA Technical Reports Server (NTRS)

A substantially improved flow of new technology is imperative if the general aviation industry is to maintain a strong world position. Although NASA is the most eminently suited entity available to carry out the necessary research and technology development effort because of its facilities, expertise, and endorsement by the aircraft industry, less than 3% of its aeronautical R&T budget is devoted to general aviation aeronautics. It is recommended that (1) a technology program, particularly one that focuses on improving fuel efficienty and safety, be aggressively pursued by NASA; (2) NASA be assigned the role of leading basic research technology effort in general aviation up through technology demonstration; (3) a strategic plan be developed by NASA, in cooperation with the industry, and implemented in time for the 1982 budget cycle; and (4) a NASA R&T budget be allocated for general aviation adequate to support the proposed plan.

1981-01-01

462

77 FR 35465 - Advisory Committee for Aviation Consumer Protection  

Federal Register 2010, 2011, 2012, 2013, 2014

...David Berg who is the senior vice president, general counsel and corporate secretary for Airlines for America; (3) Deborah Ale-Flint who is Oakland International Airport's director of aviation; and (4) Charles Leocha who is the founder of the...

2012-06-13

463

An estimate of the global impact of commercial aviation noise  

E-print Network

This study estimates the impacts of commercial aviation noise at 181 airports around the world. These airports are located in 38 countries plus Taiwan, with 95 of the airports located in the United States. They are part ...

Kish, Christopher (Christopher John)

2008-01-01

464

A program risk assessment method for aviation technology transitions  

E-print Network

This work presents a method for assessing the potential impacts of program risks on aviation technology transitions. It first establishes a framework that provides a methodology to complete the assessment of those risks. ...

Gibbs, Jonathan Marcus

2011-01-01

465

Service network design optimization for Army Aviation lift planning  

E-print Network

The need for optimized aviation lift planning is becoming increasingly important as the United States and her allies participate in the Global War on Terror (GWOT). As part of a comprehensive effort, our nation's fighting ...

Mogensen, Matthew D. (Matthew David)

2014-01-01

466

It's time to reinvent the general aviation airplane  

NASA Technical Reports Server (NTRS)

Current designs for general aviation airplanes have become obsolete, and avenues for major redesign must be considered. New designs should incorporate recent advances in electronics, aerodynamics, structures, materials, and propulsion. Future airplanes should be optimized to operate satisfactorily in a positive air traffic control environment, to afford safety and comfort for point-to-point transportation, and to take advantage of automated manufacturing techniques and high production rates. These requirements have broad implications for airplane design and flying qualities, leading to a concept for the Modern Equipment General Aviation (MEGA) airplane. Synergistic improvements in design, production, and operation can provide a much needed fresh start for the general aviation industry and the traveling public. In this investigation a small four place airplane is taken as the reference, although the proposed philosophy applies across the entire spectrum of general aviation.

Stengel, Robert F.

1988-01-01

467

A Domain-Specific Language for Aviation Domain Interoperability  

ERIC Educational Resources Information Center

Modern information systems require a flexible, scalable, and upgradeable infrastructure that allows communication and collaboration between heterogeneous information processing and computing environments. Aviation systems from different organizations often use differing representations and distribution policies for the same data and messages,…

Comitz, Paul

2013-01-01

468

Transcription of the Workshop on General Aviation Advanced Avionics Systems  

NASA Technical Reports Server (NTRS)

Papers are presented dealing with the design of reliable, low cost, advanced avionics systems applicable to general aviation in the 1980's and beyond. Sensors, displays, integrated circuits, microprocessors, and minicomputers are among the topics discussed.

Tashker, M. (editor)

1975-01-01

469

78 FR 14912 - International Aviation Safety Assessment (IASA) Program Change  

Federal Register 2010, 2011, 2012, 2013, 2014

...safety of its airlines. It does not assess the safety compliance of any particular air carrier (nor does it address aviation security, airports, or air traffic management). Although the FAA assessment team typically visits one or more air...

2013-03-08

470

Prospective Safety Analysis and the Complex Aviation System  

NASA Technical Reports Server (NTRS)

Fatal accident rates in commercial passenger aviation are at historic lows yet have plateaued and are not showing evidence of further safety advances. Modern aircraft accidents reflect both historic causal factors and new unexpected "Black Swan" events. The ever-increasing complexity of the aviation system, along with its associated technology and organizational relationships, provides fertile ground for fresh problems. It is important to take a proactive approach to aviation safety by working to identify novel causation mechanisms for future aviation accidents before they happen. Progress has been made in using of historic data to identify the telltale signals preceding aviation accidents and incidents, using the large repositories of discrete and continuous data on aircraft and air traffic control performance and information reported by front-line personnel. Nevertheless, the aviation community is increasingly embracing predictive approaches to aviation safety. The "prospective workshop" early assessment tool described in this paper represents an approach toward this prospective mindset-one that attempts to identify the future vectors of aviation and asks the question: "What haven't we considered in our current safety assessments?" New causation mechanisms threatening aviation safety will arise in the future because new (or revised) systems and procedures will have to be used under future contextual conditions that have not been properly anticipated. Many simulation models exist for demonstrating the safety cases of new operational concepts and technologies. However the results from such models can only be as valid as the accuracy and completeness of assumptions made about the future context in which the new operational concepts and/or technologies will be immersed. Of course that future has not happened yet. What is needed is a reasonably high-confidence description of the future operational context, capturing critical contextual characteristics that modulate both the likelihood of occurrence of hazards, and the likelihood that those hazards will lead to negative safety events. Heuristics extracted from scenarios, questionnaires, and observed trends from scanning the aviation horizon may be helpful in capturing those future changes in a way conducive to safety assessment. What is also needed is a checklist of potential sources of emerging risk that arise from organizational features that are frequently overlooked. The ultimate goal is to develop a pragmatic, workable method for using descriptions of the future aviation context, to generate valid predictions of safety risks.

Smith, Brian E.

2013-01-01

471

General view, marine aviation hangars, looking northwest. Oral history has ...  

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

General view, marine aviation hangars, looking northwest. Oral history has suggested that the north unit of the two surviving structures (in the background with the gable roof) was used as a repair shed by what is now the Philadelphia International Airport when it opened in 1925, and the south (doubled) unit was constructed as part of the 1926 Sesqui-Centennial Exposition. - Lazaretto Quarantine Station, Marine Aviation Hangars, Wanamaker Avenue and East Second Street, Essington, Delaware County, PA

472

Low-energy gamma ray attenuation characteristics of aviation fuels  

Microsoft Academic Search

Am241 (59.5 keV) gamma ray attenuation characteristics were investigated in 270 aviation fuel (Jet A and Jet A-1) samples from 76 airports around the world as a part of world wide study to measure the variability of aviation fuel properties as a function of season and geographical origin. All measurements were made at room temperature which varied from 20 to

J. J. Singh; C. Shen; D. R. Sprinkle

1990-01-01

473

Outsourcing Aviation Maintenance: Human Factors Implications, Specifically for Communications  

Microsoft Academic Search

As part of the Federal Aviation Administration's response to the 1997 crash of ValuJet Flight 592, the potential for human errors unique to the aviation third-party repair station environment was investigated. Data collected at 5 U.S. and 1 foreign repair stations disclosed a number of opportunities for errors arising from the more complex interactions among the repair station, the airline

Colin G. Drury; Kathryn P. Guy; Caren A. Wenner

2010-01-01

474

A review of NASA's propulsion programs for aviation  

NASA Technical Reports Server (NTRS)

A review of five NASA engine-oriented propulsion programs of major importance to civil aviation are presented and discussed. Included are programs directed at exploring propulsion system concepts for (1) energy conservation subsonic aircraft (improved current turbofans, advanced turbofans, and advanced turboprops); (2) supersonic cruise aircraft (variable cycle engines); (3) general aviation aircraft (improved reciprocating engines and small gas turbines); (4) powered lift aircraft (advanced turbofans); and (5) advanced rotorcraft.

Stewart, W. L.; Johnson, H. W.; Weber, R. J.

1978-01-01

475

Flight test and evaluation of Omega navigation for general aviation  

NASA Technical Reports Server (NTRS)

A seventy hour flight test program was performed to determine the suitability and accuracy of a low cost Omega navigation receiver in a general aviation aircraft. An analysis was made of signal availability in two widely separated geographic areas. Comparison is made of the results of these flights with other navigation systems. Conclusions drawn from the test experience indicate that developmental system improvement is necessary before a competent fail safe or fail soft area navigation system is offered to general aviation.

Hwoschinsky, P. V.

1975-01-01

476

The development of human factors research objectives for civil aviation  

NASA Technical Reports Server (NTRS)

Human factors research programs which would support civil aviation and be suitable for accomplishment by NASA research centers are identified. Aviation problems formed the basis for the research program recommendations and, accordingly, problems were identified, ranked and briefly defined in an informal report to the project monitor and other cognizant NASA personnel. The sources for this problem foundation were literature reviews and extensive interviews with NASA and non-NASA personnel. An overview of these findings is presented.

Post, T. J.

1970-01-01

477

Survey of plutonium and uranium atom ratios and activity levels in Mortandad Canyon  

SciTech Connect

For more than three decades Mortandad Canyon has been the primary release area of treated liquid radioactive waste from the Los Alamos National Laboratory (Laboratory). In this survey, six water samples and seven stream sediment samples collected in Mortandad Canyon were analyzed by thermal ionization mass spectrometry (TIMS) to determine the plutonium and uranium activity levels and atom ratios. Be measuring the {sup 240}Pu/{sup 239}Pu atom ratios, the Laboratory plutonium component was evaluated relative to that from global fallout. Measurements of the relative abundance of {sup 235}U and {sup 236}U were also used to identify non-natural components. The survey results indicate the Laboratory plutonium and uranium concentrations in waters and sediments decrease relatively rapidly with distance downstream from the major industrial sources. Plutonium concentrations in shallow alluvial groundwater decrease by approximately 1000 fold along a 3000 ft distance. At the Laboratory downstream boundary, total plutonium and uranium concentrations were generally within regional background ranges previously reported. Laboratory derived plutonium is readily distinguished from global fallout in on-site waters and sediments. The isotopic ratio data indicates off-site migration of trace levels of Laboratory plutonium in stream sediments to distances approximately two miles downstream of the Laboratory boundary.

Gallaher, B.M.; Benjamin, T.M.; Rokop, D.J.; Stoker, A.K.

1997-09-22

478

Survey of plutonium and uranium atom ratios and activity levels in Mortandad Canyon  

SciTech Connect

For more than three decades, Mortandad Canyon has been the primary release area of treated liquid radioactive waste from the Los Alamos National Laboratory (Laboratory). In this survey, six water samples and seven stream sediment samples collected in Mortandad Canyon were analyzed by thermal ionization mass spectrometry to determine the plutonium and uranium activity levels and atom ratios. By measuring the {sup 240}Pu/{sup 239}Pu atom ratios, the Laboratory plutonium component was evaluated relative to that from global fallout. Measurements of the relative abundance of {sup 235}U and {sup 236}U were also used to identify non-natural components. The survey results indicate that the Laboratory plutonium and uranium concentrations in waters and sediments decrease relatively rapidly with distance downstream from the major industrial sources. Plutonium concentrations in shallow alluvial groundwater decrease by approximately 1,000-fold along a 3,000-ft distance. At the Laboratory downstream boundary, total plutonium and uranium concentrations were generally within regional background ranges previously reported. Laboratory-derived plutonium is readily distinguished from global fallout in on-site waters and sediments. The isotopic ratio data indicate off-site migration of trace levels of Laboratory plutonium in stream sediments to distances approximately two miles downstream of the Laboratory boundary.

Gallaher, B.M.; Efurd, D.W.; Rokop, D.J.; Benjamin, T.M. [Los Alamos National Lab., NM (United States); Stoker, A.K. [Science Applications, Inc., White Rock, NM (United States)

1997-10-01

479

A Survey of Intrinsic Absorption in Active Galaxies using the Far Ultraviolet Spectroscopic Explorer  

E-print Network

We present a survey of 72 Seyfert galaxies and quasars observed by the it Far Ultraviolet Spectroscopic Explorer (FUSE). We have determined that 72 of 253 available active galactic nuclei (AGN) targets are viable targets for detection of intrinsic absorption lines. We examined these spectra for signs of intrinsic absorption in the O VI doublet (lambda 1031.9, 1037.6) and Lyman beta (lambda 1025.7). The fraction of Seyfert 1 galaxies and low-redshift quasars at z absorption is ~50%, which is slightly lower than Crenshaw et al. (1999) found (60%) based on a smaller sample of Seyfert 1 galaxies observed with the Hubble Space Telescope (HST). With this new fraction we find a global covering factor of the absorbing gas with respect to the central nucleus of ~0.4. Our survey is to date the largest searching for intrinsic UV absorption with high spectral resolution, and is the first step toward a more comprehensive study of intrinsic absorption in low-redshift AGN.

Jay P. Dunn; D. Michael Crenshaw; S. B. Kraemer; J. R. Gabel

2007-06-20

480

Aviation Management Perception of Biofuel as an Alternative Fuel Source  

NASA Astrophysics Data System (ADS)

The purpose of this phenomenological study was to explore lived experiences and perceptions from a population of 75 aviation managers in various locations in Pennsylvania about the use of aviation biofuel and how it will impact the aviation industry. The primary research question for this study focused on the impact of biofuel on the airline industry and how management believes biofuel can contribute to the reduction of fossil fuel. Grounded in the conceptual framework of sustainability, interview data collected from 27 airline and fueling leaders were analyzed for like terms, coded, and reduced to 3 themes. Data were organized and prioritized based on frequency of mention. The findings represented themes of (a) flight planning tools, (b) production, and (c) costs that are associated with aviation fuel. The results confirmed findings addressed in the literature review, specifically that aviation biofuel will transform the airline industry through lower cost and production. These findings have broad applicability for all management personnel in the aviation industry. Implications for social change and improved business environments could be realized with a cleaner environment, reduced fuel emissions, and improved air quality.

Marticek, Michael

481

The COSMOS Active Galactic Nucleus Spectroscopic Survey. I. XMM-Newton Counterparts  

NASA Astrophysics Data System (ADS)

We present optical spectroscopy for an X-ray and optical flux-limited sample of 677 XMM-Newton selected targets covering the 2 deg2 Cosmic Evolution Survey field, with a yield of 485 high-confidence redshifts. The majority of the spectra were obtained over three seasons (2005-2007) with the Inamori Magellan Areal Camera and Spectrograph instrument on the Magellan (Baade) telescope. We also include in the sample previously published Sloan Digital Sky Survey spectra and supplemental observations with MMT/Hectospec. We detail the observations and classification analyses. The survey is 90% complete to flux limits of f 0.5-10 keV > 8 × 10-16 erg cm-2 s-1 and i + AB < 22, where over 90% of targets have high-confidence redshifts. Making simple corrections for incompleteness due to redshift and spectral type allows for a description of the complete population to i + AB < 23. The corrected sample includes a 57% broad emission line (Type 1, unobscured) active galactic nucleus (AGN) at 0.13 < z < 4.26, 25% narrow emission line (Type 2, obscured) AGN at 0.07 < z < 1.29, and 18% absorption line (host-dominated, obscured) AGN at 0 < z < 1.22 (excluding the stars that made up 4% of the X-ray targets). We show that the survey's limits in X-ray and optical fluxes include nearly all X-ray AGNs (defined by L 0.5-10 keV > 3 × 1042 erg s-1) to z < 1, of both optically obscured and unobscured types. We find statistically significant evidence that the obscured-to-unobscured AGN ratio at z < 1 increases with redshift and decreases with luminosity. Based on observations with the NASA/ESA Hubble Space Telescope, obtained at the Space Telescope Science Institute, which is operated by AURA Inc., under NASA contract NAS 5-26555; the XMM-Newton, an ESA science mission with instruments and contributions directly funded by ESA Member States and NASA; the Magellan Telescope, which is operated by the Carnegie Observatories; and the MMT, operated by the MMT Observatory, a joint venture of the Smithsonian Institution and the University of Arizona.

Trump, Jonathan R.; Impey, Chris D.; Elvis, Martin; McCarthy, Patrick J.; Huchra, John P.; Brusa, Marcella; Salvato, Mara; Capak, Peter; Cappelluti, Nico; Civano, Francesca; Comastri, Andrea; Gabor, Jared; Hao, Heng; Hasinger, Gunther; Jahnke, Knud; Kelly, Brandon C.; Lilly, Simon J.; Schinnerer, Eva; Scoville, Nick Z.; Smol?i?, Vernesa

2009-05-01

482

Data collecting activities of the 'Outlook for Space' Panel. [information sources for technological forecasting survey  

NASA Technical Reports Server (NTRS)

The paper describes the work of the 'Outlook for Space' Panel, a NASA-wide study group concerned with the role space flight might play in American society during the years approaching 2000. The study considers the progression of projects from 'could do' (for which capability exists), to 'should do' (because of social benefits), to 'will do' (unknown at this time). Opinions as to objectives were solicited from NASA personnel, advisory committees, industrial organizations, and academic theoreticians. Poll data was examined. A large-scale survey of the attitudes of young people toward the future and space was also undertaken, and a complete matrix is presented of themes (such as production and management of food and forestry resources) and theme subcategory specific activities (for example, global crop production), versus the students' perceived areas of national interest or benefit (e.g., expansion of human knowledge).

Stroud, W. G.

1977-01-01