Commander Truly on aft flight deck holding communication kit assembly (ASSY)

NASA Image and Video Library

1983-09-05

STS008-04-106 (30 Aug-5 Sept 1983) --- On aft flight deck, Richard M. Truly, STS-8 commander, holds communication kit assembly (ASSY) headset (HDST) interface unit (HIU) and mini-HDST in front of the on orbit station. Hasselblad camera is positioned on overhead window W8.

Distinct neural circuits for control of movement vs. holding still

PubMed Central

2017-01-01

In generating a point-to-point movement, the brain does more than produce the transient commands needed to move the body part; it also produces the sustained commands that are needed to hold the body part at its destination. In the oculomotor system, these functions are mapped onto two distinct circuits: a premotor circuit that specializes in generating the transient activity that displaces the eyes and a “neural integrator” that transforms that transient input into sustained activity that holds the eyes. Different parts of the cerebellum adaptively control the motor commands during these two phases: the oculomotor vermis participates in fine tuning the transient neural signals that move the eyes, monitoring the activity of the premotor circuit via efference copy, whereas the flocculus participates in controlling the sustained neural signals that hold the eyes, monitoring the activity of the neural integrator. Here, I review the oculomotor literature and then ask whether this separation of control between moving and holding is a design principle that may be shared with other modalities of movement. To answer this question, I consider neurophysiological and psychophysical data in various species during control of head movements, arm movements, and locomotion, focusing on the brain stem, motor cortex, and hippocampus, respectively. The review of the data raises the possibility that across modalities of motor control, circuits that are responsible for producing commands that change the sensory state of a body part are distinct from those that produce commands that maintain that sensory state. PMID:28053244

Flight test evaluation of a separate surface attitude command control system on a Beech 99 airplane

NASA Technical Reports Server (NTRS)

Gee, S. W.; Jenks, G. E.; Roskam, J.; Stone, R. L.

1976-01-01

A joint NASA/university/industry program was conducted to flight evaluate a potentially low cost separate surface implementation of attitude command in a Beech 99 airplane. Saturation of the separate surfaces was the primary cause of many problems during development. Six experienced professional pilots who made simulated instrument flight evaluations experienced improvements in airplane handling qualities in the presence of turbulence and a reduction in pilot workload. For ride quality, quantitative data show that the attitude command control system results in all cases of airplane motion being removed from the uncomfortable ride region.

Astronaut Alan Bean holds Special Environmental Sample Container

NASA Image and Video Library

1969-11-20

AS12-49-7278 (19-20 Nov. 1969) --- Astronaut Alan L. Bean holds a Special Environmental Sample Container filled with lunar soil collected during the extravehicular activity (EVA) in which astronauts Charles Conrad Jr., commander, and Bean, lunar module pilot, participated. Conrad, who took this picture, is reflected in Bean's helmet visor. Conrad and Bean descended in the Apollo 12 Lunar Module (LM) to explore the lunar surface while astronaut Richard F. Gordon Jr., command module pilot, remained with the Command and Service Modules (CSM) in lunar orbit. Photo credit: NASA

WMAP C&DH Software

NASA Technical Reports Server (NTRS)

Cudmore, Alan; Leath, Tim; Ferrer, Art; Miller, Todd; Walters, Mark; Savadkin, Bruce; Wu, Ji-Wei; Slegel, Steve; Stagmer, Emory

2007-01-01

The command-and-data-handling (C&DH) software of the Wilkinson Microwave Anisotropy Probe (WMAP) spacecraft functions as the sole interface between (1) the spacecraft and its instrument subsystem and (2) ground operations equipment. This software includes a command-decoding and -distribution system, a telemetry/data-handling system, and a data-storage-and-playback system. This software performs onboard processing of attitude sensor data and generates commands for attitude-control actuators in a closed-loop fashion. It also processes stored commands and monitors health and safety functions for the spacecraft and its instrument subsystems. The basic functionality of this software is the same of that of the older C&DH software of the Rossi X-Ray Timing Explorer (RXTE) spacecraft, the main difference being the addition of the attitude-control functionality. Previously, the C&DH and attitude-control computations were performed by different processors because a single RXTE processor did not have enough processing power. The WMAP spacecraft includes a more-powerful processor capable of performing both computations.

Alternative Attitude Commanding and Control for Precise Spacecraft Landing

NASA Technical Reports Server (NTRS)

Singh, Gurkirpal

2004-01-01

A report proposes an alternative method of control for precision landing on a remote planet. In the traditional method, the attitude of a spacecraft is required to track a commanded translational acceleration vector, which is generated at each time step by solving a two-point boundary value problem. No requirement of continuity is imposed on the acceleration. The translational acceleration does not necessarily vary smoothly. Tracking of a non-smooth acceleration causes the vehicle attitude to exhibit undesirable transients and poor pointing stability behavior. In the alternative method, the two-point boundary value problem is not solved at each time step. A smooth reference position profile is computed. The profile is recomputed only when the control errors get sufficiently large. The nominal attitude is still required to track the smooth reference acceleration command. A steering logic is proposed that controls the position and velocity errors about the reference profile by perturbing the attitude slightly about the nominal attitude. The overall pointing behavior is therefore smooth, greatly reducing the degree of pointing instability.

Flight test evaluation of a separate surface attitude command control system on a Beech 99 airplane

NASA Technical Reports Server (NTRS)

Gee, S. W.; Jenks, G. E.; Roskam, J.; Stone, R. L.

1976-01-01

A joint NASA/university/industry program was conducted to flight evaluate a potentially low cost separate surface implementation of attitude command in a Beech 99 airplane. Saturation of the separate surfaces was the primary cause of many problems during development. Six experienced professional pilots made simulated instrument flight evaluations in light-to-moderate turbulence. They were favorably impressed with the system, particularly with the elimination of control force transients that accompanied configuration changes. For ride quality, quantitative data showed that the attitude command control system resulted in all cases of airplane motion being removed from the uncomfortable ride region.

14 CFR 125.281 - Pilot-in-command qualifications.

Code of Federal Regulations, 2014 CFR

2014-01-01

... 14 Aeronautics and Space 3 2014-01-01 2014-01-01 false Pilot-in-command qualifications. 125.281... Requirements § 125.281 Pilot-in-command qualifications. No certificate holder may use any person, nor may any person serve, as pilot in command of an airplane unless that person— (a) Holds at least a commercial...

14 CFR 125.283 - Second-in-command qualifications.

Code of Federal Regulations, 2013 CFR

2013-01-01

... 14 Aeronautics and Space 3 2013-01-01 2013-01-01 false Second-in-command qualifications. 125.283... Requirements § 125.283 Second-in-command qualifications. No certificate holder may use any person, nor may any person serve, as second in command of an airplane unless that person— (a) Holds at least a commercial...

14 CFR 125.283 - Second-in-command qualifications.

Code of Federal Regulations, 2014 CFR

2014-01-01

... 14 Aeronautics and Space 3 2014-01-01 2014-01-01 false Second-in-command qualifications. 125.283... Requirements § 125.283 Second-in-command qualifications. No certificate holder may use any person, nor may any person serve, as second in command of an airplane unless that person— (a) Holds at least a commercial...

14 CFR 125.281 - Pilot-in-command qualifications.

Code of Federal Regulations, 2013 CFR

2013-01-01

... 14 Aeronautics and Space 3 2013-01-01 2013-01-01 false Pilot-in-command qualifications. 125.281... Requirements § 125.281 Pilot-in-command qualifications. No certificate holder may use any person, nor may any person serve, as pilot in command of an airplane unless that person— (a) Holds at least a commercial...

14 CFR 125.283 - Second-in-command qualifications.

Code of Federal Regulations, 2010 CFR

2010-01-01

... 14 Aeronautics and Space 3 2010-01-01 2010-01-01 false Second-in-command qualifications. 125.283... Requirements § 125.283 Second-in-command qualifications. No certificate holder may use any person, nor may any person serve, as second in command of an airplane unless that person— (a) Holds at least a commercial...

14 CFR 125.283 - Second-in-command qualifications.

Code of Federal Regulations, 2011 CFR

2011-01-01

... 14 Aeronautics and Space 3 2011-01-01 2011-01-01 false Second-in-command qualifications. 125.283... Requirements § 125.283 Second-in-command qualifications. No certificate holder may use any person, nor may any person serve, as second in command of an airplane unless that person— (a) Holds at least a commercial...

14 CFR 125.283 - Second-in-command qualifications.

Code of Federal Regulations, 2012 CFR

2012-01-01

... 14 Aeronautics and Space 3 2012-01-01 2012-01-01 false Second-in-command qualifications. 125.283... Requirements § 125.283 Second-in-command qualifications. No certificate holder may use any person, nor may any person serve, as second in command of an airplane unless that person— (a) Holds at least a commercial...

14 CFR 125.281 - Pilot-in-command qualifications.

Code of Federal Regulations, 2011 CFR

2011-01-01

... 14 Aeronautics and Space 3 2011-01-01 2011-01-01 false Pilot-in-command qualifications. 125.281... Requirements § 125.281 Pilot-in-command qualifications. No certificate holder may use any person, nor may any person serve, as pilot in command of an airplane unless that person— (a) Holds at least a commercial...

14 CFR 125.281 - Pilot-in-command qualifications.

Code of Federal Regulations, 2010 CFR

2010-01-01

... 14 Aeronautics and Space 3 2010-01-01 2010-01-01 false Pilot-in-command qualifications. 125.281... Requirements § 125.281 Pilot-in-command qualifications. No certificate holder may use any person, nor may any person serve, as pilot in command of an airplane unless that person— (a) Holds at least a commercial...

14 CFR 125.281 - Pilot-in-command qualifications.

Code of Federal Regulations, 2012 CFR

2012-01-01

... 14 Aeronautics and Space 3 2012-01-01 2012-01-01 false Pilot-in-command qualifications. 125.281... Requirements § 125.281 Pilot-in-command qualifications. No certificate holder may use any person, nor may any person serve, as pilot in command of an airplane unless that person— (a) Holds at least a commercial...

STS-30 Commander Walker on forward flight deck

NASA Technical Reports Server (NTRS)

1989-01-01

On Atlantis', Orbiter Vehicle (OV) 104's, forward flight deck between commanders and pilots seats, STS-30 Commander David M. Walker smiles while having his picture taken. Walker, wearing a mission polo shirt and light blue flight coverall pants, holds onto the commanders seat back. Forward flight control panels are visible above Walker's head and behind him.

Attitude and position estimation on the Mars Exploration Rovers

NASA Technical Reports Server (NTRS)

Ali, Khaled S.; Vanelli, C. Anthony; Biesiadecki, Jeffrey J.; Maimone, Mark W.; Yang Cheng, A.; San Martin, Miguel; Alexander, James W.

2005-01-01

NASA/JPL 's Mars Exploration Rovers acquire their attitude upon command and autonomously propagate their attitude and position. The rovers use accelerometers and images of the sun to acquire attitude, autonomously searching the sky for the sun with a pointable camera. To propagate the attitude and position the rovers use either accelerometer and gyro readings or gyro readings and wheel odometiy, depending on the nature of the movement ground operators are commanding. Where necessary, visual odometry is performed on images to fine tune the position updates, particularly in high slip environments. The capability also exists for visual odometry attitude updates. This paper describes the techniques used by the rovers to acquire and maintain attitude and position knowledge, the accuracy which is obtainable, and lessons learned after more than one year in operation.

Solar Sail Attitude Control Performance Comparison

NASA Technical Reports Server (NTRS)

Bladt, Jeff J.; Lawrence, Dale A.

2005-01-01

Performance of two solar sail attitude control implementations is evaluated. One implementation employs four articulated reflective vanes located at the periphery of the sail assembly to generate control torque about all three axes. A second attitude control configuration uses mass on a gimbaled boom to alter the center-of-mass location relative to the center-of-pressure producing roll and pitch torque along with a pair of articulated control vanes for yaw control. Command generation algorithms employ linearized dynamics with a feedback inversion loop to map desired vehicle attitude control torque into vane and/or gimbal articulation angle commands. We investigate the impact on actuator deflection angle behavior due to variations in how the Jacobian matrix is incorporated into the feedback inversion loop. Additionally, we compare how well each implementation tracks a commanded thrust profile, which has been generated to follow an orbit trajectory from the sun-earth L1 point to a sub-L1 station.

Enhancing the Operational Art: The Influence of the Information Environment on the Command-and-Control of Airpower

DTIC Science & Technology

2000-06-01

appropriate working definition. Whereas command takes the form of art , control borders closely on the realm of science . One source holds control to be: [The......OPERATIONAL ART 6 3 COMMAND, CONTROL, AND AIRPOWER 15 4 CASE STUDIES IN THE COMMAND-AND-CONTROL OF AIRPOWER 30 5 CONCLUSIONS 78 6 IMPLICATIONS 87 GLOSSARY

STS-32 Commander Brandenstein displays birthday card on OV-102's flight deck

NASA Image and Video Library

1990-01-17

STS032-30-024 (17 Jan 1990) --- Astronaut Daniel C. Brandenstein, STS-32 mission commander, holds up a card signed by friends in the astronaut office and around JSC. The commander celebrated his 47th birthday on January 17, 1990, about two thirds the way through an eleven-day mission in Earth orbit aboard Columbia. Brandenstein is seated at the commander's station.

Navigator Command Potential: An Analysis of U.S. Air Force Pilot Attitudes toward the Job Satisfaction Characteristics of U.S. Air Force Navigators

DTIC Science & Technology

1990-09-01

than many of the other officer career fields. In 1986, Marchewka reported that job dissatisfaction among navigators was *probably because their jobs are...Company, Inc., 1935. 30. Marchewka , Maj Peter S. Job Attitudes of USAF Pilots and Navigators. Unpublished report No. 86-1610. Air Command and Staff

Mariner Mars 1971 attitude control subsystem

NASA Technical Reports Server (NTRS)

Edmunds, R. S.

1974-01-01

The Mariner Mars 1971 attitude control subsystem (ACS) is discussed. It is comprised of a sun sensor set, a Canopus tracker, an inertial reference unit, two cold gas reaction control assemblies, two rocket engine gimbal actuators, and an attitude control electronics unit. The subsystem has the following eight operating modes: (1) launch, (2) sun acquisition, (3) roll search, (4) celestial cruise, (5) all-axes inertial, (6) roll inertial, (7) commanded turn, and (8) thrust vector control. In the celestial cruise mode, the position control is held to plus or minus 0.25 deg. Commanded turn rates are plus or minus 0.18 deg/s. The attitude control logic in conjunction with command inputs from other spacecraft subsystems establishes the ACS operating mode. The logic utilizes Sun and Canopus acquisition signals generated within the ACS to perform automatic mode switching so that dependence of ground control is minimized when operating in the sun acquisition, roll search, and celestial cruise modes. The total ACS weight is 65.7 lb, and includes 5.4 lb of nitrogen gas. Total power requirements vary from 9 W for the celestial cruise mode to 54 W for the commanded turn mode.

Commander De Wine poses for a photo

NASA Image and Video Library

2009-11-08

ISS021-E-022397 (8 Nov. 2009) --- European Space Agency astronaut Frank De Winne, Expedition 21 commander, holds a stowage bag containing various beverages in the Unity node of the International Space Station.

Initial Investigation of Reaction Control System Design on Spacecraft Handling Qualities for Earth Orbit Docking

NASA Technical Reports Server (NTRS)

Bailey, Randall E.; Jackson, E. Bruce; Goodrich, Kenneth H.; Ragsdale, W. Al; Neuhaus, Jason; Barnes, Jim

2008-01-01

A program of research, development, test, and evaluation is planned for the development of Spacecraft Handling Qualities guidelines. In this first experiment, the effects of Reaction Control System design characteristics and rotational control laws were evaluated during simulated proximity operations and docking. Also, the influence of piloting demands resulting from varying closure rates was assessed. The pilot-in-the-loop simulation results showed that significantly different spacecraft handling qualities result from the design of the Reaction Control System. In particular, cross-coupling between translational and rotational motions significantly affected handling qualities as reflected by Cooper-Harper pilot ratings and pilot workload, as reflected by Task-Load Index ratings. This influence is masked but only slightly by the rotational control system mode. While rotational control augmentation using Rate Command Attitude Hold can reduce the workload (principally, physical workload) created by cross-coupling, the handling qualities are not significantly improved. The attitude and rate deadbands of the RCAH introduced significant mental workload and control compensation to evaluate when deadband firings would occur, assess their impact on docking performance, and apply control inputs to mitigate that impact.

Spacecraft Attitude Tracking and Maneuver Using Combined Magnetic Actuators

NASA Technical Reports Server (NTRS)

Zhou, Zhiqiang

2012-01-01

A paper describes attitude-control algorithms using the combination of magnetic actuators with reaction wheel assemblies (RWAs) or other types of actuators such as thrusters. The combination of magnetic actuators with one or two RWAs aligned with different body axis expands the two-dimensional control torque to three-dimensional. The algorithms can guarantee the spacecraft attitude and rates to track the commanded attitude precisely. A design example is presented for nadir-pointing, pitch, and yaw maneuvers. The results show that precise attitude tracking can be reached and the attitude- control accuracy is comparable with RWA-based attitude control. When there are only one or two workable RWAs due to RWA failures, the attitude-control system can switch to the control algorithms for the combined magnetic actuators with the RWAs without going to the safe mode, and the control accuracy can be maintained. The attitude-control algorithms of the combined actuators are derived, which can guarantee the spacecraft attitude and rates to track the commanded values precisely. Results show that precise attitude tracking can be reached, and the attitude-control accuracy is comparable with 3-axis wheel control.

Apollo experience report: Command module uprighting system

NASA Technical Reports Server (NTRS)

White, R. D.

1973-01-01

A water-landing requirement and two stable flotation attitudes required that a system be developed to ensure that the Apollo command module would always assume an upright flotation attitude. The resolution to the flotation problem and the uprighting concepts, design selection, design changes, development program, qualification, and mission performance are discussed for the uprighting system, which is composed of inflatable bags, compressors, valves, and associated tubing.

Judgmental Bias in the Rating of Attitude Statements

ERIC Educational Resources Information Center

Bruvold, William H.

1975-01-01

Judges holding divergent attitudes rated two sets of statements regarding uses of water reclaimed from sewage. Results showed a close linear relationship between item scale values obtained from positive and negative attitudinal groups, and a somewhat reduced rating range for judges holding unfavorable personal attitudes toward reuse. (Author/RC)

46 CFR 4.07-1 - Commandant or District Commander to order investigation.

Code of Federal Regulations, 2010 CFR

2010-10-01

...) Whether there is evidence that any act of misconduct, inattention to duty, negligence or willful violation of the law on the part of any person holding a Coast Guard credential contributed to the casualty, so...

Analysis of the Command and Control Segment (CCS) attitude estimation algorithm

NASA Technical Reports Server (NTRS)

Stockwell, Catherine

1993-01-01

This paper categorizes the qualitative behavior of the Command and Control Segment (CCS) differential correction algorithm as applied to attitude estimation using simultaneous spin axis sun angle and Earth cord length measurements. The categories of interest are the domains of convergence, divergence, and their boundaries. Three series of plots are discussed that show the dependence of the estimation algorithm on the vehicle radius, the sun/Earth angle, and the spacecraft attitude. Common qualitative dynamics to all three series are tabulated and discussed. Out-of-limits conditions for the estimation algorithm are identified and discussed.

The Identification of Factors Influencing College Students' Attitudes toward Radioactivity.

ERIC Educational Resources Information Center

Crater, Harold L., Jr.

The two basic questions considered in this study were: (1) What attitudes do college students hold toward radioactivity? and (2) What are some characteristics associated with the college students who hold the more favorable attitudes toward radioactivity? The sample studied included 1,205 mostly undergraduate students at the University of Texas at…

A Survey of Civilian Employee Attitudes

DTIC Science & Technology

1989-06-01

U.S. Army Troop Support Command. The survey was conducted as part of an organizational diagnosis in preparation for the implementation of a civilian...survey as part of the program evaluation is recommended. Keywords: Surveys; Questionnaires; Employee attitudes; Attitude measurement; Organizational diagnosis .

Photo of family members of STS-5 commander, Vance D. Brand

NASA Technical Reports Server (NTRS)

1982-01-01

Erik Brand and his mother Beverly are seen in a photo of family members of STS-5 commander Vance D. Brand. Erik holds a small model of the space shuttle with its solid rocket boosters and external fuel tank still attached.

A pilot's assessment of helicopter handling-quality factors common to both agility and instrument flying tasks

NASA Technical Reports Server (NTRS)

Gerdes, R. M.

1980-01-01

A series of simulation and flight investigations were undertaken to evaluate helicopter flying qualities and the effects of control system augmentation for nap-of-the-Earth (NOE) agility and instrument flying tasks. Handling quality factors common to both tasks were identified. Precise attitude control was determined to be a key requirement for successful accomplishment of both tasks. Factors that degraded attitude controllability were improper levels of control sensitivity and damping, and rotor system cross coupling due to helicopter angular rate and collective pitch input. Application of rate command, attitude command, and control input decouple augmentation schemes enhanced attitude control and significantly improved handling qualities for both tasks. The NOE agility and instrument flying handling quality considerations, pilot rating philosophy, and supplemental flight evaluations are also discussed.

Piloted Simulator Investigation of Techniques to Achieve Attitude Command Response with Limited Authority Servos

NASA Technical Reports Server (NTRS)

Key, David L.; Heffley, Robert K.

2002-01-01

The purpose of the study was to develop generic design principles for obtaining attitude command response in moderate to aggressive maneuvers without increasing SCAS series servo authority from the existing +/- 10%. In particular, to develop a scheme that would work on the UH-60 helicopter so that it can be considered for incorporation in future upgrades. The basic math model was a UH-60A version of GENHEL. The simulation facility was the NASA-Ames Vertical Motion Simulator (VMS). Evaluation tasks were Hover, Acceleration-Deceleration, and Sidestep, as defined in ADS-33D-PRF for Degraded Visual Environment (DVE). The DVE was adjusted to provide a Usable Cue Environment (UCE) equal to two. The basic concept investigated was the extent to which the limited attitude command authority achievable by the series servo could be supplemented by a 10%/sec trim servo. The architecture used provided angular rate feedback to only the series servo, shared the attitude feedback between the series and trim servos, and when the series servo approached saturation the attitude feedback was slowly phased out. Results show that modest use of the trim servo does improve pilot ratings, especially in and around hover. This improvement can be achieved with little degradation in response predictability during moderately aggressive maneuvers.

Afghanistan 2012 and Beyond: Clearing, Holding, and Building with Transition Teams

DTIC Science & Technology

2012-05-10

Afghan population, towards achieving those goals. However, given the time already spent in Afghanistan, the constant changes of command and rotation...messages from the White House and apathy of the Afghan government, the pressure is on commanders to expedite the COIN strategy. One problem that...prevents commanders from moving quicker towards transitioning to ANSF is that the definition of success in Afghanistan is difficult to define. In 2009

Simulator study of flight characteristics of several large, dissimilar, cargo transport airplanes during approach and landing

NASA Technical Reports Server (NTRS)

Grantham, W. D.; Smith, P. M.; Deal, P. L.; Neely, W. R., Jr.

1984-01-01

A six-degree-of-freedom, ground based simulator study is conducted to evaluate the low-speed flight characteristics of four dissimilar cargo transport airplanes. These characteristics are compared with those of a large, present-day (reference) transport configuration similar to the Lockheed C-5A airplane. The four very large transport concepts evaluated consist of single-fuselage, twin-fuselage, triple-fuselage, and span-loader configurations. The primary piloting task is the approach and landing operation. The results of his study indicate that all four concepts evaluated have unsatisfactory longitudinal and lateral directional low speed flight characteristics and that considerable stability and control augmentation would be required to improve these characteristics (handling qualities) to a satisfactory level. Through the use of rate command/attitude hold augmentation in the pitch and roll axes, and the use of several turn-coordination features, the handling qualities of all four large transports simulated are improved appreciably.

Fuzzy Finite-Time Command Filtered Control of Nonlinear Systems With Input Saturation.

PubMed

Yu, Jinpeng; Zhao, Lin; Yu, Haisheng; Lin, Chong; Dong, Wenjie

2017-08-22

This paper considers the fuzzy finite-time tracking control problem for a class of nonlinear systems with input saturation. A novel fuzzy finite-time command filtered backstepping approach is proposed by introducing the fuzzy finite-time command filter, designing the new virtual control signals and the modified error compensation signals. The proposed approach not only holds the advantages of the conventional command-filtered backstepping control, but also guarantees the finite-time convergence. A practical example is included to show the effectiveness of the proposed method.

Reusable Launch Vehicle Attitude Control Using a Time-Varying Sliding Mode Control Technique

NASA Technical Reports Server (NTRS)

Shtessel, Yuri B.; Zhu, J. Jim; Daniels, Dan; Jackson, Scott (Technical Monitor)

2002-01-01

In this paper we present a time-varying sliding mode control (TVSMC) technique for reusable launch vehicle (RLV) attitude control in ascent and entry flight phases. In ascent flight the guidance commands Euler roll, pitch and yaw angles, and in entry flight it commands the aerodynamic angles of bank, attack and sideslip. The controller employs a body rate inner loop and the attitude outer loop, which are separated in time-scale by the singular perturbation principle. The novelty of the TVSMC is that both the sliding surface and the boundary layer dynamics can be varied in real time using the PD-eigenvalue assignment technique. This salient feature is used to cope with control command saturation and integrator windup in the presence of severe disturbance or control effector failure, which enhances the robustness and fault tolerance of the controller. The TV-SMC ascent and descent designs are currently being tested with high fidelity, 6-DOF dispersion simulations. The test results will be presented in the final version of this paper.

The Army Public Affairs Program

DTIC Science & Technology

2000-09-15

charge levied to defray expenses for food , beverages , and other incidentals. (2) Using bands and other ceremonial unit support at military-sponsored...command channels by the authorized cable television (CATV) franchise . g. Advise the commander on audience attitudes about and perceptions of policies...support events and activities of common interest and benefit to local, state, regional, national, or broadly represented audiences. Commanders must be

Why Brilliant Military Leaders Fail: Learning from Their Mistakes

DTIC Science & Technology

2009-03-24

systemic issue, military culture holds the commander or leader ultimately responsible for that happens within the command. A military commander is...Johnson, Wang Labs, Samsung Motors, 5 Schwinn, and even the Boston Red Sox have met with dramatic failure.13 From the numerous theories of why a...of the need for a convoy system to protect merchant shipping. Yet, it was not until six months after the United States entered the war, May 1942

A pilot's assessment of helicopter handling-quality factors common to both agility and instrument flying tasks

NASA Technical Reports Server (NTRS)

Gerdes, R. M.

1980-01-01

Results from a series of simulation and flight investigations undertaken to evaluate helicopter flying qualities and the effects of control system augmentation for nap-of-the-earth (NOE) agility and instrument flying tasks were analyzed to assess handling-quality factors common to both tasks. Precise attitude control was determined to be a key requirement for successful accomplishment of both tasks. Factors that degraded attitude controllability were improper levels of control sensitivity and damping and rotor-system cross-coupling due to helicopter angular rate and collective pitch input. Application of rate-command, attitude-command, and control-input decouple augmentation schemes enhanced attitude control and significantly improved handling qualities for both tasks. NOE agility and instrument flying handling-quality considerations, pilot rating philosophy, and supplemental flight evaluations are also discussed.

Culbertson holds a syringe kit in Destiny during Expedition Three

NASA Image and Video Library

2001-08-29

ISS003-E-5475 (29 August 2001) --- Astronaut Frank L. Culbertson, Expedition Three mission commander, holds a syringe kit to be used in the Quad Tissue Culture Module Assemblies (QTCMA) for the Biotechnology Specimen Temperature Controller (BSTC) experiment in the U.S. Laboratory.

Command and data handling for Atmosphere Explorer satellite

NASA Technical Reports Server (NTRS)

Fuldner, W. V.

1974-01-01

The command and data-handling subsystem of the Atmosphere Explorer satellite provides the necessary controls for the instrumentation and telemetry, and also controls the satellite attitude and trajectory. The subsystem executes all command information within the spacecraft, either in real time (as received over the S-band command transmission link) or remote from the command site (as required by the orbit operations schedule). Power consumption in the spacecraft is optimized by suitable application and removal of power to various instruments; additional functions include control of magnetic torquers and of the orbit-adjust propulsion subsystem. Telemetry data from instruments and the spacecraft equipment are formatted into a single serial bit stream. Attention is given to command types, command formats, decoder operation, and command processing functions.

The SAS-3 delayed command system

NASA Technical Reports Server (NTRS)

Hoffman, E. J.

1975-01-01

To meet the requirements arising from the increased complexity of the power, attitude control and telemetry systems, a full redundant high-performance control section with delayed command capability was designed for the Small Astronomy Satellite-3 (SAS-3). The relay command system of SAS-3 is characterized by 56 bystate relay commands, with capability for handling up to 64 commands in future versions. The 'short' data command service of SAS-1 and SAS-2 consisting of shifting 24-bit words to two users was expanded to five users and augmented with a 'long load' data command service (up to 4080 bits) used to program the telemetry system and the delayed command subsystem. The inclusion of a delayed command service ensures a program of up to 30 relay or short data commands to be loaded for execution at designated times. The design and system operation of the SAS-3 command section are analyzed, with special attention given to the delayed command subsystem.

Improved Lunar Lander Handling Qualities Through Control Response Type and Display Enhancements

NASA Technical Reports Server (NTRS)

Mueller, Eric Richard; Bilimoria, Karl D.; Frost, Chad Ritchie

2010-01-01

A piloted simulation that studied the handling qualities for a precision lunar landing task from final approach to touchdown is presented. A vehicle model based on NASA's Altair Lunar Lander was used to explore the design space around the nominal vehicle configuration to determine which combination of factors provides satisfactory pilot-vehicle performance and workload; details of the control and propulsion systems not available for that vehicle were derived from Apollo Lunar Module data. The experiment was conducted on a large motion base simulator. Eight Space Shuttle and Apollo pilot astronauts and three NASA test pilots served as evaluation pilots, providing Cooper-Harper ratings, Task Load Index ratings and qualitative comments. Each pilot flew seven combinations of control response types and three sets of displays, including two varieties of guidance and a nonguided approach. The response types included Rate Command with Attitude Hold, which was used in the original Apollo Moon landings, a Velocity Increment Command response type designed for up-and-away flight, three response types designed specifically for the vertical descent portion of the trajectory, and combinations of these. It was found that Velocity Increment Command significantly improved handling qualities when compared with the baseline Apollo design, receiving predominantly Level 1 ratings. This response type could be flown with or without explicit guidance cues, something that was very difficult with the baseline design, and resulted in approximately equivalent touchdown accuracies and propellant burn as the baseline response type. The response types designed to be used exclusively in the vertical descent portion of the trajectory did not improve handling qualities.

Engines-only flight control system

NASA Technical Reports Server (NTRS)

Burcham, Frank W. (Inventor); Gilyard, Glenn B (Inventor); Conley, Joseph L. (Inventor); Stewart, James F. (Inventor); Fullerton, Charles G. (Inventor)

1994-01-01

A backup flight control system for controlling the flightpath of a multi-engine airplane using the main drive engines is introduced. The backup flight control system comprises an input device for generating a control command indicative of a desired flightpath, a feedback sensor for generating a feedback signal indicative of at least one of pitch rate, pitch attitude, roll rate and roll attitude, and a control device for changing the output power of at least one of the main drive engines on each side of the airplane in response to the control command and the feedback signal.

Hearing on Space Situational Awareness:

NASA Image and Video Library

2018-06-22

House Subcommittee on Strategic Forces holds a hearing on Space Situational Awareness: Whole of Government Perspectives on Roles and Responsibilities, Friday, June 22, 2018 at the Rayburn House Office Building in Washington. Witnesses: NASA Administrator Jim Bridenstine; Commander, U.S. Strategic Command, General John Hyten; and Secretary of Commerce Wilbur Ross. Photo Credit: (NASA/Bill Ingalls)

Managing Cassini Safe Mode Attitude at Saturn

NASA Technical Reports Server (NTRS)

Burk, Thomas A.

2010-01-01

The Cassini spacecraft was launched on October 15, 1997 and arrived at Saturn on June 30, 2004. It has performed detailed observations and remote sensing of Saturn, its rings, and its satellites since that time. In the event safe mode interrupts normal orbital operations, Cassini has flight software fault protection algorithms to detect, isolate, and recover to a thermally safe and commandable attitude and then wait for further instructions from the ground. But the Saturn environment is complex, and safety hazards change depending on where Cassini is in its orbital trajectory around Saturn. Selecting an appropriate safe mode attitude that insures safe operation in the Saturn environment, including keeping the star tracker field of view clear of bright bodies, while maintaining a quiescent, commandable attitude, is a significant challenge. This paper discusses the Cassini safe table management strategy and the key criteria that must be considered, especially during low altitude flybys of Titan, in deciding what spacecraft attitude should be used in the event of safe mode.

Expedition 22 Change of Command in the U.S. Laboratory

NASA Image and Video Library

2010-03-17

ISS022-E-100383 (17 March 2010) --- Crew members aboard the International Space Station are pictured in the Destiny laboratory during the ceremony of Changing-of-Command from Expedition 22 to Expedition 23. Pictured are NASA astronauts Jeffrey Williams (right, holding microphone), Expedition 22 commander; and T.J. Creamer (second right), Expedition 22/23 flight engineer; Russian cosmonauts Oleg Kotov (left), Expedition 22 flight engineer and Expedition 23 commander; and Maxim Suraev (mostly obscured at left background), Expedition 22 flight engineer; along with Japan Aerospace Exploration Agency (JAXA) astronaut Soichi Noguchi, Expedition 22/23 flight engineer.

Expedition 22 Change of Command in the U.S. Laboratory

NASA Image and Video Library

2010-03-17

ISS022-E-100363 (17 March 2010) --- Crew members aboard the International Space Station are pictured in the Destiny laboratory during the ceremony of Changing-of-Command from Expedition 22 to Expedition 23. Pictured are NASA astronauts Jeffrey Williams (right, holding microphone), Expedition 22 commander; and T.J. Creamer (center background), Expedition 22/23 flight engineer; Russian cosmonauts Oleg Kotov (left), Expedition 22 flight engineer and Expedition 23 commander; and Maxim Suraev (bottom), Expedition 22 flight engineer; along with Japan Aerospace Exploration Agency (JAXA) astronaut Soichi Noguchi (mostly out of frame at right), Expedition 22/23 flight engineer.

Artificial Earth Satellites Designed and Fabricated by The Johns Hopkins University Applied Physics Laboratory. Revised

DTIC Science & Technology

1978-07-01

occurred. The attitude detection system included a three-axis fluxgate vector magnetometer and solar attitude detectors that produced both analog and digital ...heliogoniometer ( digital solar attitudeIsensing system) Three axis analog solar detection - Rubidium vapor magnetometer Three axis fluxgate magnetometer ...Telemetry: 35 channels modulating 150 MHz carrier on command Three axis solar attitude detector system Three axis fluxgate magnetometer system

Foale holds the top endcap for the TVIS Gyroscope in SM during Expedition 8

NASA Image and Video Library

2003-12-09

ISS008-E-07384 (9 Dec. 2003) --- Astronaut C. Michael Foale, Expedition 8 commander and NASA ISS science officer, holds the top end-cap for the Treadmill Vibration Isolation System (TVIS) gyroscope in the Zvezda Service Module on the International Space Station (ISS).

Mission Command in the Joint Task Force -- Port Opening

DTIC Science & Technology

2015-06-12

a significant concern. The appearance of lack of disciplined initiative suggests a laissez - faire attitude on the part of DDOC personnel. A...Chiefs of Staff (CJCS) published the Mission Command White Paper on 03 April 2012, launching Mission Command to the forefront of Army leadership ...trust and leadership - subordinate close proximity; furthermore, research has also shown that the same level of trust was not inherent between leaders

Physiology and pathology of saccades and gaze holding.

PubMed

Shaikh, Aasef G; Ghasia, Fatema F

2013-01-01

Foveation is the fundamental requirement for clear vision. Saccades rapidly shift the gaze to the interesting target while gaze holding ensures foveation of the desired object. We will review the pertinent physiology of saccades and gaze holding and their pathophysiology leading to saccadic oscillations, slow saccades, saccadic dysmetria, and nystagmus. Motor commands for saccades are generated at multiple levels of the neuraxis. The frontal and parietal eye field send saccadic commands to the superior colliculus. Latter then projects to the brain-stem saccadic burst generator. The brain-stem burst generators guarantee optimum signal to ensure rapid saccadic velocity, while the neural integrator, by mathematically integrating the saccadic pulse, facilitates stable gaze holding. Reciprocal innervations that ensure rapid saccadic velocity are prone to inherent instability leading to saccadic oscillations. In contrast, suboptimal function of the burst generators causes slow saccades. Impaired error correction, either at the cerebellum or the inferior olive, leads to impaired saccade adaptation and ultimately saccadic dysmetria and oculopalatal tremor. Impairment in the function of neural integrator causes nystagmus. Neurophysiology of saccades, gaze holding, and their deficits are well recognized. These principles can be implemented to define novel therapeutic and rehabilitation approaches.

Know Yourself, Define Your Enemy: Presidential Rhetoric and American Strategic Culture

DTIC Science & Technology

2016-06-10

Commander Gareth Prendergast received his commission from the Queen in 2000. Upon qualification in role as a Navigator on the Tornado GR4 fighter...On returning to the Tornado , he successfully deployed the first UK combat air assets in support of the humanitarian crisis in Iraq and...subsequently commanded the RAF Tornado detachment. Wing Commander Prendergast read for a Masters in International Law at Lancaster University and holds a Bachelor degree with honors from Keele University in International Relations.

Krikalev films Usachev in Node 1

NASA Image and Video Library

2001-03-17

STS102-340-014 (8-21 March 2001) --- Cosmonaut Sergei K. Krikalev, Expedition One flight engineer (left), and cosmonaut Yury V. Usachev, Expedition Two commander, are photographed in the Unity node holding cameras. Cosmonaut Yuri P. Gidzenko, Expedition Two commander, joins them as he floats through the tunnel from the Russian-built Zarya control module. All three are associated with Rosaviakosmos.

INFLIGHT - APOLLO 7 (CREW ACTIVITIES)

NASA Image and Video Library

1968-10-15

S68-50713 (14 Oct. 1968) --- Astronauts Walter M. Schirra Jr. (on right), mission commander; and Donn F. Eisele, command module pilot; are seen in the first live television transmission from space. Schirra is holding a sign which reads, "Keep those cards and letters coming in, folks!" Out of view at left is astronaut Walter Cunningham, lunar module pilot.

STS-36 Commander Creighton and drinking water containers on OV-104's middeck

NASA Technical Reports Server (NTRS)

1990-01-01

On Atlantis', Orbiter Vehicle (OV) 104's, middeck, STS-36 Commander John O. Creighton, holding his bifocals, reads labels on drinking water containers attached to the forward lockers. Creighton and four other NASA astronauts spent four days, 10 hours and 19 minutes aboard OV-104 for the Department of Defense (DOD) devoted mission.

A Comparative Study of PDF Generation Methods: Measuring Loss of Fidelity When Converting Arabic and Persian MS Word Files to PDF

DTIC Science & Technology

2011-02-17

document objects, on one or more electronic document pages. These commands have their roots in typography , so, to understand the PDF Language, one...must have at least a rudimentary understanding of typography . Only a few of the typographic commands, called text showing operators, can hold strings

Attitude Design for the LADEE Mission

NASA Technical Reports Server (NTRS)

Galal, Ken; Nickel, Craig; Sherman, Ryan

2015-01-01

The Lunar Atmosphere and Dust Environment Explorer (LADEE) satellite successfully completed its 148-day science investigation in a low-altitude, near-equatorial lunar orbit on April 18, 2014. The LADEE spacecraft was built, managed and operated by NASA's Ames Research Center (ARC). The Mission Operations Center (MOC) was located at Ames and was responsible for activity planning, command sequencing, trajectory and attitude design, orbit determination, and spacecraft operations. The Science Operations Center (SOC) was located at Goddard Space Flight Center and was responsible for science planning, data archiving and distribution. This paper details attitude design and operations support for the LADEE mission. LADEE's attitude design was shaped by a wide range of instrument pointing requirements that necessitated regular excursions from the baseline one revolution per orbit "Ram" attitude. Such attitude excursions were constrained by a number of flight rules levied to protect instruments from the Sun, avoid geometries that would result in simultaneous occlusion of LADEE's two star tracker heads, and maintain the spacecraft within its thermal and power operating limits. To satisfy LADEE's many attitude requirements and constraints, a set of rules and conventions was adopted to manage the complexity of this design challenge and facilitate the automation of ground software that generated pointing commands spanning multiple days of operations at a time. The resulting LADEE Flight Dynamics System (FDS) that was developed used Visual Basic scripts that generated instructions to AGI's Satellite Tool Kit (STK) in order to derive quaternion commands at regular intervals that satisfied LADEE's pointing requirements. These scripts relied heavily on the powerful "align and constrain" capability of STK's attitude module to construct LADEE's attitude profiles and the slews to get there. A description of the scripts and the attitude modeling they embodied is provided. One particular challenge analysts faced was in the design of LADEE maneuver attitudes. A flight rule requiring pre-maneuver verification of in-flight maneuver conditions by ground operators prior to burn execution resulted in the need to accommodate long periods in the maneuver attitude. This in turn complicated efforts to satisfy star tracker interference and communication constraints in lunar orbit. In response to this challenge, a graphical method was developed and used to survey candidate rotation angles about the thrust vector. This survey method is described and an example of its use on a particular LADEE maneuver is discussed. Finally, the software and methodology used to satisfy LADEE's attitude requirements are also discussed in the context of LADEE's overall activity planning effort. In particular, the way in which strategic schedules of instrument and engineering activities were translated into actual attitude profiles at the tactical level, then converted into precise quaternion commands to achieve those pointing goals is explained. In order to reduce the risk of time-consuming re-planning efforts, this process included the generation of long-term projections of constraint violation predictions for individual attitude profiles that could be used to establish keep-out time-frames for particular attitude profiles. The challenges experienced and overall efficacy of both the overall LADEE ground system and the attitude components of the Flight Dynamics System in meeting LADEE's varied pointing requirements are discussed.

Ew, that's icky: Assessing children's attitudes towards the insects of Connecticut

NASA Astrophysics Data System (ADS)

Weeks, Faith Jean-Ellen

This study investigated children's attitudes towards insects, focusing on how attitudes change from fascination to repulsion as the children age. This study involved 127 elementary students (grades 4-6) and 139 high school students (grades 9-12) from New Haven public schools. Students were administered Likert type surveys to evaluate their attitudes after viewing photos of 8 common insects of Connecticut; the butterfly, ladybug, dragonfly, ant, moth, cricket, beetle, and fly. Scores from elementary school students were compared with high school students to determine if attitudes towards insects became less favorable as the children age. The results were also analyzed to determine if attitudinal changes were consistent between girls and boys. It was found that elementary school students did not hold more negative attitudes than high school students, but girls did hold more negative attitudes towards insects than boys.

Job Attitudes of Air National Guard Personnel.

DTIC Science & Technology

1986-04-01

organizational behavior literature. 2. To compare OAP-measured demographic characteristics and job attitudes of Air National Guard personnel with the ...thought to represent official ideas, attitudes , or policies of any agency of the United States Government. The author has rot had special access to...day that they are drawn together as a total force. ANG commanders studying this report will see the job attitude strengths and weaknesses of ANG

Knowledge, attitude and techniques of breastfeeding among Nigerian mothers from a semi-urban community

PubMed Central

2013-01-01

Background Mothers’ poor knowledge and negative attitude towards breastfeeding may influence practices and constitute barriers to optimizing the benefits of the baby-friendly initiative. This study assessed breastfeeding knowledge, attitude and techniques of postures, positioning, hold practice and latch-on among Nigerian mothers from a Semi-Urban community. Methods Three hundred and eighty three consenting lactating mothers who have breastfed for 6 months and up to two years volunteered for this cross-sectional survey, yielding a response rate of 95.7%. A self-administered questionnaire that sought information on maternal socio-demographic variables, knowledge, attitudes and breastfeeding techniques of mothers was employed. Results Based on cumulative breastfeeding knowledge and attitude scores, 71.3% of the respondents had good knowledge while 54.0% had positive attitude. Seventy one point three percent practiced advisable breastfeeding posture. Sitting on a chair to breastfeed was common (62.4%); and comfort of mother/baby (60.8%) and convenience (29.5%) were the main reasons for adopting breastfeeding positions. Cross-cradle hold (80.4%), football hold technique (13.3%), breast-to-baby (18.0%) and baby-to-breast latch-on (41.3%) were the common breastfeeding techniques. A majority of the respondents (75.7%) agreed that neck flexion, slight back flexion, arm support with pillow and foot rest was essential during breastfeeding. There was no significant association between breastfeeding posture practice and each of cumulative breastfeeding knowledge score levels (X2 = 0.044; p = 0.834) and attitude score levels (X2 = 0.700; p = 0.403). Conclusion Nigerian mothers demonstrated good knowledge and positive attitude towards breastfeeding. Most of the mothers practiced advisable breastfeeding postures, preferred sitting on a chair to breastfeed and utilized cross-cradle hold and baby-to-breast latch-on. PMID:24359943

Linsdey holds up boxes of chocolate covered coffee beans in the MDK during STS-121

NASA Image and Video Library

2006-07-07

S121-E-05896 (7 July 2006) --- Astronaut Steven W. Lindsey, STS-121 commander, holds small boxes of food items on the middeck of the Space Shuttle Discovery. Also visible in the background are astronauts Lisa M. Nowak (left), mission specialist, and Mark E. Kelly, pilot.

33 CFR 100.30 - Approval required for holding event.

Code of Federal Regulations, 2013 CFR

2013-07-01

... event. 100.30 Section 100.30 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND... holding event. (a) An event for which application is required under § 100.15(a) shall be held only after approval of such event by the District Commander, except that applications referred to a State under § 100...

33 CFR 100.30 - Approval required for holding event.

Code of Federal Regulations, 2012 CFR

2012-07-01

... event. 100.30 Section 100.30 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND... holding event. (a) An event for which application is required under § 100.15(a) shall be held only after approval of such event by the District Commander, except that applications referred to a State under § 100...

33 CFR 100.30 - Approval required for holding event.

Code of Federal Regulations, 2011 CFR

2011-07-01

... event. 100.30 Section 100.30 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND... holding event. (a) An event for which application is required under § 100.15(a) shall be held only after approval of such event by the District Commander, except that applications referred to a State under § 100...

33 CFR 100.30 - Approval required for holding event.

Code of Federal Regulations, 2014 CFR

2014-07-01

... event. 100.30 Section 100.30 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND... holding event. (a) An event for which application is required under § 100.15(a) shall be held only after approval of such event by the District Commander, except that applications referred to a State under § 100...

Job Attitudes of Military Airlift Command Personnel

DTIC Science & Technology

1986-04-01

the OAP survey as part of LMDC’s consulting program. As noted in the literature review, no related research was found comparing the job attitudes of... attitudes than the other enlisted personnel in the areas of the work itself and job kA enrichment. In these two areas, MAC scores on three related factors...a more positive attitude than the other Air Force enlisted personnel toward Job Related Satisfaction. On the General

Do Attitudes toward School Influence the Underachievement of Turkish and Moroccan Minority Students in Flanders? The Attitude-Achievement Paradox Revisited

ERIC Educational Resources Information Center

D'hondt, Fanny; Van Praag, Lore; Stevens, Peter A. J.; Van Houtte, Mieke

2015-01-01

While many ethnic minority students underachieve compared with their ethnic majority peers, they often hold very positive school attitudes. Mickelson (1990) explained this attitude-achievement paradox by the existence of a double set of attitudes. Abstract attitudes reflect the dominant ideas about schooling, while concrete attitudes refer to a…

Krikalev holds tube within CPCF-2 Activation Mechanism during Expedition 10 / Expedition 11

NASA Image and Video Library

2005-04-18

ISS010-E-24980 (18 April 2005) --- Cosmonaut Sergei K. Krikalev, Expedition 11 commander representing Russia's Federal Space Agency, holds a sample tube within the Commercial Protein Crystallization Facility-2 (CPCF-2) Activation Mechanism which is part of the Kriogem-03 refrigerator in the Zvezda Service Module of the International Space Station (ISS).

Onufrienko holds a Grab Sample Container (GSC) in the SM during Expedition Four

NASA Image and Video Library

2002-05-23

ISS004-E-12368 (23 May 2002) --- Cosmonaut Yury I. Onufrienko, Expedition Four mission commander representing Rosaviakosmos, holds a Grab Sample Container (GSC) in the Zvezda Service Module on the International Space Station (ISS). The GSC is used to take air samples in various modules as part of environmental quality control.

Astronaut Alan Bean holds Special Environmental Sample Container

NASA Technical Reports Server (NTRS)

1969-01-01

Astronaut Alan L. Bean, lunar module pilot for the Apollo 12 lunar landing mission, holds a Special Environmental Sample Container filled with lunar soil collected during the extravehicular activity (EVA) in which Astronauts Charles Conrad Jr., commander, and Bean participated. Connrad, who took this picture, is reflected in the helmet visor of the lunar module pilot.

Kuipers holds the Plasma-03 experiment container as Foale looks on during Expedition 9 / Expedition 8

NASA Image and Video Library

2004-04-29

ISS008-E-22393 (29 April 2004) --- European Space Agency (ESA) astronaut Andre Kuipers of the Netherlands, holds a Complex “Plasma-03” canister in the Zvezda Service Module of the International Space Station (ISS). Astronaut C. Michael Foale, Expedition 8 commander and NASA ISS science officer, is at right.

Art Concept - Apollo VIII - Command Module (CM) - Re-Entry Orientation

NASA Image and Video Library

1968-01-01

S68-55292 (August 1968) --- A North American Rockwell Corporation artist's concept depicting the Apollo Command Module (CM), oriented in a blunt-end-forward attitude, re-entering Earth's atmosphere after returning from a lunar landing mission. Note the change in color caused by the extremely high temperatures encountered upon re-entry.

STS-87 Commander Kregel holds the crew patch in front of Columbia's entry hatch at LC 39B during TCD

NASA Technical Reports Server (NTRS)

1997-01-01

STS-87 Commander Kevin Kregel holds the crew patch in front of Columbia's entry hatch at Launch Pad 39B during Terminal Countdown Demonstration Test (TCDT) activities. The crew of the STS-87 mission is scheduled for launch Nov. 19 aboard the Space Shuttle Columbia. The TCDT is held at KSC prior to each Space Shuttle flight providing the crew of each mission opportunities to participate in simulated countdown activities. The TCDT ends with a mock launch countdown culminating in a simulated main engine cut-off. The crew also spends time undergoing emergency egress training exercises at the pad and has an opportunity to view and inspect the payloads in the orbiter's payload bay.

Expedition Three Commander Culbertson and STS-105 Commander Horowitz in the White Room

NASA Technical Reports Server (NTRS)

2001-01-01

KENNEDY SPACE CENTER, Fla. -- Expedition Three Commander Frank Culbertson (left) and STS-105 Commander Scott Horowitz (right), in the White Room at Launch Pad 39A, hold the sign for their mission. Both crews are at KSC to take part in Terminal Countdown Demonstration Test activities, which include emergency egress training, a simulated launch countdown and familiarization with the payload. Mission STS-105 will be transporting the Expedition Three crew, several payloads and scientific experiments to the International Space Station aboard Discovery. The current Expedition Two crew members on the Station will return to Earth on Discovery. Launch of Discovery is scheduled no earlier than Aug. 9, 2001.

Flight dynamics simulation modeling and control of a large flexible tiltrotor aircraft

NASA Astrophysics Data System (ADS)

Juhasz, Ondrej

A high order rotorcraft mathematical model is developed and validated against the XV-15 and a Large Civil Tiltrotor (LCTR) concept. The mathematical model is generic and allows for any rotorcraft configuration, from single main rotor helicopters to coaxial and tiltrotor aircraft. Rigid-body and inflow states, as well as flexible wing and blade states are used in the analysis. The separate modeling of each rotorcraft component allows for structural flexibility to be included, which is important when modeling large aircraft where structural modes affect the flight dynamics frequency ranges of interest, generally 1 to 20 rad/sec. Details of the formulation of the mathematical model are given, including derivations of structural, aerodynamic, and inertial loads. The linking of the components of the aircraft is developed using an approach similar to multibody analyses by exploiting a tree topology, but without equations of constraints. Assessments of the effects of wing flexibility are given. Flexibility effects are evaluated by looking at the nature of the couplings between rigid-body modes and wing structural modes and vice versa. The effects of various different forms of structural feedback on aircraft dynamics are analyzed. A proportional-integral feedback on the structural acceleration is deemed to be most effective at both improving the damping and reducing the overall excitation of a structural mode. A model following control architecture is then implemented on full order flexible LCTR models. For this aircraft, the four lowest frequency structural modes are below 20 rad/sec, and are thus needed for control law development and analysis. The impact of structural feedback on both Attitude-Command, Attitude-Hold (ACAH) and Translational Rate Command (TRC) response types are investigated. A rigid aircraft model has optimistic performance characteristics, and a control system designed for a rigid aircraft could potentially destabilize a flexible one. The various control systems are flown in a fixed-base simulator. Pilot inputs and aircraft performance are recorded and analyzed.

Changing Medical Students' Attitudes toward Older Adults

ERIC Educational Resources Information Center

Gonzales, Ernest; Morrow-Howell, Nancy; Gilbert, Pat

2010-01-01

Given the growth in the number of older adults and the ageist attitudes many in the health care profession hold, interventions aimed at improving health professionals' attitudes toward older adults are imperative. Vital Visionaries is an intergenerational art program designed to improve medical students' attitudes toward older adults. Participants…

The Coast Artillery Journal. Volume 80, Number 4, July-August 1937

DTIC Science & Technology

1937-08-01

800 Massachusetts and 200 Connecticut infantry commanded by Colore ! Prescott marched from Cambridge to seize and hold the heights above Charlestown... effectof additional rounds to each man of Prescott’s command. their close-rangefire. Furthermore, many rounds had been allocated to rein- Another...been without food throughout the entire day. Despite these various de- moralizing factors, the corps maintained its discipline. The retirement began

Airsea Battle: Can the Air Force and the Navy Get Along

DTIC Science & Technology

2011-06-01

staffs at headquarters, Special Operations Command – Korea (SOCKOR) and at Joint Special Operations Task Force – Philippines (JSOTF- P ). His most...Detachment (JSOAD) deputy commander for JSOTF- P . Major Kobs holds a Bachelors of Arts Degree in Political Science from the University of New...1894), p . 26. concept, Glenn H. Curtiss agreed to instruct naval officers for the creation of a naval aviation program. Lieutenant T.G

Commanding an Air Force Squadron in the 21st Century: A Practical Guide of Tips and Techniques for Today’s Squadron Commander

DTIC Science & Technology

2002-04-01

132 CATS AND DOGS ...hostage for hours regurgitating old news or non-critical information. How and when you hold a squadron staff meeting is entirely up to you as the...interview with author, Maxwell AFB, Alabama, 14 March 02. 140 Chapter Six CATS AND DOGS This chapter deals with those issues that do not

STS-57 Commander Grabe adjusts Thermal Enclosure System (TES) aboard OV-105

NASA Technical Reports Server (NTRS)

1993-01-01

STS-57 Commander Ronald J. Grabe adjusts a bolt on the Thermal Enclosure System (TES) with Crystal Observation System (COS) experiment installation located in an aft locker (MA16J) on the middeck of Endeavour, Orbiter Vehicle (OV) 105. Holding a camcorder in his right hand, Grabe prepares to monitor and record the crystal growth. The open airlock hatch is partially visible in the background.

Astronaut Russell Schweickart photographed during EVA

NASA Image and Video Library

1969-03-06

AS09-19-2994 (6 March 1969) --- Astronaut Russell L. Schweickart, lunar module pilot, is photographed from the Command Module (CM) "Gumdrop" during his extravehicular activity (EVA) on the fourth day of the Apollo 9 Earth-orbital mission. He holds, in his right hand, a thermal sample which he is retrieving from the Lunar Module (LM) exterior. The Command and Service Modules (CSM) and LM "Spider" are docked. Schweickart, wearing an Extravehicular Mobility Unit (EMU), is standing in "golden slippers" on the LM porch. Visible on his back are the Portable Life Support System (PLSS) and Oxygen Purge System (OPS). Astronaut James A. McDivitt, Apollo 9 commander, was inside the "Spider". Astronaut David R. Scott, command module pilot, remained at the controls in the CM "Gumdrop".

STS-103 crew return at building 990, Ellington Field

NASA Image and Video Library

1999-12-29

Photographic documentation showing STS-103 crew return at bldg. 990, Ellington Field. Views include: Mission Specialist (MS) John M. Grunsfeld at podium (16048); MS Jean-Francois Clervoy at podium (16049); Grunsfeld signs autographs (16050); woman and child (16051); MS Claude Nicollier meets his Swiss-American fan club (16052); Clervoy holds child (16053); mission commander Curtis L. Brown signs autographs (16054, 16057); MS E. Michael Foale signs autographs (16055); MS and Payload Commander (PLC) Steven L. Smith kneels and holds child (16056); overall view of stage showing Brown at podium with crew seated behind him; from left to right: Nicollier, pilot Scott J. Kelly, Clervoy, Grunsfeld, Mr. George Abbey (JSC director), Foale and Smith (16058); Nicollier at podium (16059); Mr. George Abbey at the podium (16060): Foale ath the podium (16061); Kelly signs autographs (16062).

STS-78 crew holds up Olympic torch at SLF

NASA Technical Reports Server (NTRS)

1996-01-01

KENNEDY SPACE CENTER, FLA. -- STS-78 Payload Commander Susan J. Helms (center) holds up an Olympic torch that was presented to the crew after they arrived at KSC's Shuttle Landing Facility. With Helms are (from left) Payload Specialist Robert Brenton Thirsk (Canadian Space Agency); Mission Specialist Charles E. Brady; Mission Commander Terence T. 'Tom' Henricks; Helms; Mission Specialist Richard M. Linnehan; Pilot Keven R. Kregel; and Payload Specialist Jean-Jacques Favier (French Space Agency). The crew will take the torch with them on their upcoming spaceflight and then present it upon their return to a representative of the Atlanta Committee for the Olympic games (ACOG). The countdown clock began ticking earlier today toward the June 20 launch of the Space Shuttle Columbia on Mission STS- 78, the fifth Shuttle flight of 1996.

Evangelical Christian College Students and Attitudes toward Gay Rights: A California University Sample

ERIC Educational Resources Information Center

Wolff, Joshua R.; Himes, Heather L.; Kwon, Ellen Miller; Bollinger, Richard A.

2012-01-01

Research demonstrates that Evangelical Christians generally hold more negative attitudes toward gays and lesbians, and are less supportive of gay rights than the general U.S. population. To assess these attitudes, undergraduate students at an Evangelical Christian university in California (N = 319) completed the Attitudes Toward Lesbians and Gay…

Prospective Elementary Teachers' Perceptions of Gender Differences in Children's Attitudes toward Mathematics

ERIC Educational Resources Information Center

Schwartz, Catherine S.; Sinicrope, Rose

2013-01-01

Prospective elementary teachers hold preconceived ideas about elementary school students' attitudes toward mathematics. We found that there exists a gender bias with prospective teachers expecting girls to have negative attitudes toward mathematics and boys more likely to have positive attitudes toward mathematics. We found that these…

Military and Civilian Undergraduates: Attitudes toward Women, Masculinity, and Authoritarianism.

ERIC Educational Resources Information Center

Kurpius, Sharon E. Robinson; Lucart, A. Leigh

2000-01-01

Surveyed students at the U.S. Naval Academy, U.S. Air Force Academy, Reserve Officer Training Corp, and a civilian university about attitudes toward gender roles and authoritarianism. Military students had the most traditional authoritarian beliefs and gender role attitudes, with Naval Academy males holding the most traditional attitudes toward…

Regular Primary Schoolteachers' Attitudes towards Inclusive Education: A Review of the Literature

ERIC Educational Resources Information Center

de Boer, Anke; Pijl, Sip Jan; Minnaert, Alexander

2011-01-01

Teachers are seen as key persons to implement inclusive education. Positive attitudes are therefore argued as playing a considerable role in implementing this educational change successfully. The aim of this study is to examine what attitudes teachers hold towards inclusive education, which variables are related to their attitudes and if these…

Lunar Reconnaissance Orbiter (LRO) Thruster Control Mode Design and Flight Experience

NASA Technical Reports Server (NTRS)

Hsu, Oscar C.

2010-01-01

National Aeronautics and Space Administration s (NASA) Goddard Space Flight Center (GSFC) in Greenbelt, MD, designed, built, tested, and launched the Lunar Reconnaissance Orbiter (LRO) from Cape Canaveral Air Force Station on June 18, 2009. The LRO spacecraft is the first operational spacecraft designed to support NASA s return to the Moon, as part of the Vision for Space Exploration. LRO was launched aboard an Atlas V 401 launch vehicle into a direct insertion trajectory to the Moon. Twenty-four hours after separation the propulsion system was used to perform a mid-course correction maneuver. Four days after the mid-course correction a series of propulsion maneuvers were executed to insert LRO into its commissioning orbit. The commission period lasted eighty days and this followed by a second set of thruster maneuvers that inserted LRO into its mission orbit. To date, the spacecraft has been gathering invaluable data in support of human s future return to the moon. The LRO Attitude Control Systems (ACS) contains two thruster based control modes: Delta-H and Delta-V. The design of the two controllers are similar in that they are both used for 3-axis control of the spacecraft with the Delta-H controller used for momentum management and the Delta-V controller used for orbit adjust and maintenance maneuvers. In addition to the nominal purpose of the thruster modes, the Delta-H controller also has the added capability of performing a large angle slew maneuver. A suite of ACS components are used by the thruster based control modes, for both initialization and control. For initialization purposes, a star tracker or the Kalman Filter solution is used for providing attitude knowledge and upon entrance into the thruster based control modes attitude knowledge is provided via rate propagation using a inertial reference unit (IRU). Rate information for the controller is also supplied by the IRU. Three-axis control of the spacecraft in the thruster modes is provided by eight 5-lbf class attitude control thrusters configured in two sets of four thrusters for redundancy purposes. Four additional 20-lbf class thrusters configured in two sets of two thrusters are used for Lunar Orbit Insertion maneuvers. The propulsion system is one the few systems on-board the LRO spacecraft that has built in redundancy. The Delta-H controller consists of a Proportional-Derivative (PD) controller with a structural filter on the thrusters and a Proportional controller on the reaction wheels. The PD control that employs the thrusters is used for attitude and rate control. The Proportional controller on the reaction wheels is used for commanding the wheels to a new momentum state. The ground commands used for the Delta-H controller are the system momentum vector, reaction wheel momentum, maximum expected command time, and which set of attitude control thrusters to use. The ability to command both the system momentum vector and reaction wheel momentum in the Delta-H controller provides both a capability and an additional source of operator error. Large angle slews via the Delta-H controller is achievable via this commands because these commands are used for the exit mode criteria. Setting these commands to non-consistent values prevents the mode from exiting nominally.

Clear, Hold, Build: Modern Political Techniques in COIN

DTIC Science & Technology

2008-01-01

coordinating with groups that are not typically associated with military activities. Key to this coordination is leveraging assets that allow commanders to understand the social relationships in their AO.

STS-35 Commander Brand is suspended over JSC WETF pool during egress exercise

NASA Technical Reports Server (NTRS)

1990-01-01

STS-35 Commander Vance D. Brand is suspended via his parachute harness above the pool in JSC's Weightless Environment Training Facility (WETF) Bldg 29 during launch emergency egress exercises. Divers in the pool hold Brand's feet to steady him. In the background and on the poolside is Pilot Guy S. Gardner. Both Brand and Gardner are wearing launch and entry suits (LESs) and launch and entry helmets (LEHs).

Attitudes towards prisoners, as reported by prison inmates, prison employees and college students.

PubMed

Kjelsberg, Ellen; Skoglund, Tom Hilding; Rustad, Aase-Bente

2007-05-04

Positive attitudes towards prisoners are important in securing the effectiveness of various correctional rehabilitation programs and the successful reintegration of prisoners after release. We wanted to investigate the attitudes towards prisoners among prison inmates, prison employees and college students. The Attitudes Toward Prisoners scale was completed by 298 inmates in 4 Norwegian prisons, 387 employees working in the same prisons, and 183 college students. In addition, all respondents were asked a number of general questions about prisoners, crime and punishment. The study groups differed significantly in their attitudes towards prisoners, as measured by the Attitudes Toward Prisoners scale, with prison inmates holding the most positive attitudes. Prison officers held more negative attitudes than other prison employees. Prison employees working in female-only facilities held more positive attitudes than those working in male-only facilities. Students differed significantly in their attitudes, with those studying business economics holding more negative attitudes than those studying nursing. A number of strong correlations emerged between negative attitudes towards prisoners and more pessimistic and punitive answers on general questions about prisoners, crime and punishment. The attitudes towards prisoners differed markedly among the groups investigated. The findings could have important implications, particularly for the preventive work carried out in our prisons. Whether attitudes toward prisoners can be influenced by educational programs and the dispersion of factual information needs to be investigated.

Attitudes towards prisoners, as reported by prison inmates, prison employees and college students

PubMed Central

Kjelsberg, Ellen; Skoglund, Tom Hilding; Rustad, Aase-Bente

2007-01-01

Background Positive attitudes towards prisoners are important in securing the effectiveness of various correctional rehabilitation programs and the successful reintegration of prisoners after release. We wanted to investigate the attitudes towards prisoners among prison inmates, prison employees and college students. Methods The Attitudes Toward Prisoners scale was completed by 298 inmates in 4 Norwegian prisons, 387 employees working in the same prisons, and 183 college students. In addition, all respondents were asked a number of general questions about prisoners, crime and punishment. Results The study groups differed significantly in their attitudes towards prisoners, as measured by the Attitudes Toward Prisoners scale, with prison inmates holding the most positive attitudes. Prison officers held more negative attitudes than other prison employees. Prison employees working in female-only facilities held more positive attitudes than those working in male-only facilities. Students differed significantly in their attitudes, with those studying business economics holding more negative attitudes than those studying nursing. A number of strong correlations emerged between negative attitudes towards prisoners and more pessimistic and punitive answers on general questions about prisoners, crime and punishment. Conclusion The attitudes towards prisoners differed markedly among the groups investigated. The findings could have important implications, particularly for the preventive work carried out in our prisons. Whether attitudes toward prisoners can be influenced by educational programs and the dispersion of factual information needs to be investigated. PMID:17480213

Attitude towards Inclusive Education: The Perspective of Slovenian Preschool and Primary School Teachers

ERIC Educational Resources Information Center

Štemberger, Tina; Kiswarday, Vanja Riccarda

2018-01-01

The paper is built on premises that teachers' attitude is one of the most important factors of implementing inclusive education and it focuses on preschool and primary school teachers' attitudes towards inclusive education. The purpose of the study was to establish what attitude Slovenian preschool and primary school teachers hold towards…

Design of an all-attitude flight control system to execute commanded bank angles and angles of attack

NASA Technical Reports Server (NTRS)

Burgin, G. H.; Eggleston, D. M.

1976-01-01

A flight control system for use in air-to-air combat simulation was designed. The input to the flight control system are commanded bank angle and angle of attack, the output are commands to the control surface actuators such that the commanded values will be achieved in near minimum time and sideslip is controlled to remain small. For the longitudinal direction, a conventional linear control system with gains scheduled as a function of dynamic pressure is employed. For the lateral direction, a novel control system, consisting of a linear portion for small bank angle errors and a bang-bang control system for large errors and error rates is employed.

Astronaut Alan Bean reads data from book while holding teleprinter tape

NASA Technical Reports Server (NTRS)

1973-01-01

Astronaut Alan L. Bean, Skylab 3 commander, reads data from book in his right hand while holding teleprinter tape in his left hand, in the ward room of the Skylab space station's Orbital Workshop (OWS) crew quarters. This photograph was taken with a 35mm Nikon camera held by one of Bean's fellow crewmen during the 56.5 day second manned Skylab mission in Earth orbit.

NANORACK

NASA Image and Video Library

2012-10-12

ISS033-E-011683 (12 Oct. 2012) --- NASA astronaut Sunita Williams, Expedition 33 commander, holds a plastic storage bag as she prepares to service the NanoRacks Module 9 payload in the Kibo laboratory of the International Space Station.

NANORACK

NASA Image and Video Library

2012-10-12

ISS033-E-011684 (12 Oct. 2012) --- NASA astronaut Sunita Williams, Expedition 33 commander, holds a plastic storage bag as she prepares to service the NanoRacks Module 9 payload in the Kibo laboratory of the International Space Station.

Superstreet benefits and capacities.

DOT National Transportation Integrated Search

2011-03-01

Though most Americans hold pro-environmental attitudes, an attitudes-behavior gap exists with respect to vehicle ownership. Significant constraints appear to prevent most people with environmental concerns from buying smaller, more fuel-efficient, le...

Compendium of Nitromethane Data Relevant to the Tactical Explosive System (TEXS) Program

DTIC Science & Technology

1989-04-01

reduced charge size. Confined NM in glass tubes and added silica impurities with a known particle size distribution, and used guar gum to hold silica...internal ignition test. The explosive in the pipe bomb is subjected to the action of a cen- trally located black powder (20 g) igniter. A positive...Laboratory 2800 Powder Mill Road Adelphia, MD 20783-1145 Commander U.S. Army Test and Evaluation Command ATTN: AMSTE-TE-AT, B. Hawley Aberdeen

Space Station Commander Talks to South Carolina Students

NASA Image and Video Library

2017-10-02

Aboard the International Space Station, Expedition 53 Commander Randy Bresnik of NASA discussed life and work aboard the orbital laboratory during an in-flight educational event Oct. 2 with students at The Citadel STEM Center at the Laing Middle School near Charleston, South Carolina. Bresnik holds a Bachelor of Arts degree in mathematics and an honorary doctorate in aeronautics from The Citadel. He launched to the station in July and will remain on board through mid-December.

MS Peterson eats while reviewing procedures with Commander Weitz on middeck

NASA Technical Reports Server (NTRS)

1983-01-01

Mission Specialist (MS) Peterson, holding food container, eats while reviewing procedures with Commander Weitz (wearing bifocals) on middeck in front of starboard wall. Weitz points out an item in the frew activity plan (CAP) to Peterson as the mission specialist uses a spoon to eat a meal aboard the Earth-orbiting Challenger, Orbiter Vehicle (OV) 099. Weitz and Peterson are wearing the shirt and trouser portions of the light blue cotton multi-piece constant wear garments.

Commander Young reviews clipboard notes and procedures on forward flight deck

NASA Image and Video Library

1981-04-14

STS001-07-540 (12-14 April 1981) --- Astronaut John W. Young, commander, is seated at his left side station in the flight deck of the space shuttle Columbia. He holds a loose-leaf book in which he recorded data during the flight. Soon after the launch phase of STS-1, astronauts Young and Robert L. Crippen, pilot, changed from their high altitude pressure garments into the light blue constant wear garment. Photo credit: NASA

The knowledge and attitudes of midwives regarding legal and religious commandments on induced abortion and their relationship with some demographic characteristics.

PubMed

Afhami, Narges; Bahadoran, Parvin; Taleghani, Hamid Reza; Nekuei, Nafisehsadat

2016-01-01

Induced abortion is an important medical issue. Knowledge and attitude of midwives regarding legal and religious commandments on induced abortion can be useful in confronting this issue. The aim of this study was to assess the knowledge and attitudes of midwives of Isfahan regarding these rules and to find their relationship with demographic characteristics. This was a cross-sectional, descriptive, and analytical study. The study participants consisted of 189 midwives working in hospitals, health centers, private gynecology clinics, and university. Random quota sampling method was used. Data were collected using a researcher-made questionnaire. Data were analyzed using mean, frequency distribution tables, Pearson correlation, and Spearman's coefficient. For all tests, an error of less than 0.05 was considered. The majority of the participants had extremely low to moderate (73%) knowledge about the subject of the study. Their attitudes toward effective implementation of these rules were mostly extremely weak to moderate (68.72%). No correlation was observed between knowledge, age, work experience, and education. However, there was a relationship between the level of knowledge about these rules and the location of service. There was no significant correlation between attitude and demographic characteristics. Due to less knowledge of the midwives and their low attitude score in this regard, training them, improving their attitude toward these issues, and effective implementation of these laws are necessary. Therefore, by identifying the factors affecting the formation of attitudes and the level of knowledge, more constructive proceedings can be taken to promote them.

Removing Bias towards World Englishes: The Development of a Rater Attitude Instrument Using Indian English as a Stimulus

ERIC Educational Resources Information Center

Hsu, Tammy Huei-Lien

2016-01-01

This study explores the attitudes of raters of English speaking tests towards the global spread of English and the challenges in rating speakers of Indian English in descriptive speaking tasks. The claims put forward by language attitude studies indicate a validity issue in English speaking tests: listeners tend to hold negative attitudes towards…

The Effect of Attitude toward the Elderly on Behavior toward an Older Adult.

ERIC Educational Resources Information Center

Sinnott, Jan D.; And Others

Many people hold negative attitudes toward older adults, and these attitudes often are associated with negative behavior toward the old. To explore the behavioral correlates of attitudes toward the elderly, 105 male and female college students, with a mean age of 24.5 years, participated in a two-phase experiment. During phase one, all subjects…

Attitudes of the Macedonian Preschool Teachers toward Students with Disabilities

ERIC Educational Resources Information Center

Dimitrova-Radojichikj, Daniela Blagoj; Chichevska-Jovanova, Natasha; Rashikj-Canevska, Olivera

2016-01-01

Preschool teachers are seen as key persons to implement inclusive education. Positive attitudes are therefore argued as playing a considerable role in implementing this educational change successfully. The aim of this study was to examine what attitudes Macedonian preschool teachers hold towards early inclusive education; which variables are…

Beliefs about behavior account for age differences in the correspondence bias.

PubMed

Stanley, Jennifer Tehan; Blanchard-Fields, Fredda

2011-03-01

Older adults tend to exhibit the correspondence bias to a greater extent than young adults. The current study examined whether these age differences are a function of the degree to which an individual subscribes to a lay theory of attitude-behavior consistency. First, participants responded to questions regarding their beliefs about attitude-behavior consistency. Approximately 2 weeks later, 144 (67 young adults and 77 older adults) participants completed the correspondence bias task. As expected, older adults were more biased than young adults. Analyses revealed that the degree to which an individual holds attitude-behavior consistency beliefs in the dishonesty domain accounted for age-related differences in the correspondence bias. The results of this study suggest that age differences in the correspondence bias task are in part driven by older adults holding stronger attitude-behavior consistency beliefs than young adults.

Joint Operations and the Vicksburg Campaign

DTIC Science & Technology

1993-06-04

the laisse faire attitude the army took with the navy maybe the navy should be a separate and equal command instead of subordinate to the army...of effort with the civilian Secretary of War managing the common direction and objectives for army and navy cooperation was an ideal concept. Although...lamented about. Halleck urged Washington to correct this by making him the overall Western Commander; thus, Halleck could better manage his naval resources

Proceedings of the 1997 Space Control Conference, Volume 2

DTIC Science & Technology

1997-03-27

of attitude information are used in our orbit determination. The attitude history buffer on MSX holds quaternions and time tags at 100-second...being able to use the attitude quaternions , DYNAMO can also compute the park-mode attitude of MSX if, for example, some of the raw on-board attitude ... used to aid the target discrimination process. THE MSX SPACECRAFT The SBV sensor was launched on the BMDO supported MSX spacecraft on 24 April

Padalka holds packages of food unloaded from the Progress 15P vehicle during Expedition 9

NASA Image and Video Library

2004-08-15

ISS009-E-18558 (15 August 2004) --- Cosmonaut Gennady I. Padalka, Expedition 9 commander representing Russia's Federal Space Agency, holds packages of food, as two apples float freely near him, in the Unity node of the International Space Station (ISS). The food was recently unloaded from the Progress 15 supply vehicle docked to the Station. The functional cargo block (FGB) or Zarya hatchway is visible in the background.

Establishing a Suitable Tactical Design Model for Clear-Hold-Build Counterinsurgency Operations

DTIC Science & Technology

2009-06-12

Vietnam capitol of Saigon. Cedar Falls was tactically designed to achieve this result through two measures . First, U.S. Army forces would separate...provide a higher force ratio for the operation. This tethering would mitigate risk for the Soldiers themselves. Because risk management is so integrated...Vietnam) BCT Brigade Combat Team BCTP Battle Command Training Program BN Battalion BSP Baghdad Security Plan CF Coalition Forces C-H-B Clear-Hold

Apollo Onboard Navigation Techniques

NASA Technical Reports Server (NTRS)

Interbartolo, Michael

2009-01-01

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

Thrust vector control of upper stage with a gimbaled thruster during orbit transfer

NASA Astrophysics Data System (ADS)

Wang, Zhaohui; Jia, Yinghong; Jin, Lei; Duan, Jiajia

2016-10-01

In launching Multi-Satellite with One-Vehicle, the main thruster provided by the upper stage is mounted on a two-axis gimbal. During orbit transfer, the thrust vector of this gimbaled thruster (GT) should theoretically pass through the mass center of the upper stage and align with the command direction to provide orbit transfer impetus. However, it is hard to be implemented from the viewpoint of the engineering mission. The deviations of the thrust vector from the command direction would result in large velocity errors. Moreover, the deviations of the thrust vector from the upper stage mass center would produce large disturbance torques. This paper discusses the thrust vector control (TVC) of the upper stage during its orbit transfer. Firstly, the accurate nonlinear coupled kinematic and dynamic equations of the upper stage body, the two-axis gimbal and the GT are derived by taking the upper stage as a multi-body system. Then, a thrust vector control system consisting of the special attitude control of the upper stage and the gimbal rotation of the gimbaled thruster is proposed. The special attitude control defined by the desired attitude that draws the thrust vector to align with the command direction when the gimbal control makes the thrust vector passes through the upper stage mass center. Finally, the validity of the proposed method is verified through numerical simulations.

Test Candidates' Attitudes and Their Relationship to Demographic and Experiential Variables: The Case of Overseas Trained Teachers in NSW, Australia

ERIC Educational Resources Information Center

Murray, Jill C.; Riazi, A. Mehdi; Cross, Judith L.

2012-01-01

One measure of the impact of a high-stakes test is the attitudes that test takers hold towards it. It has been suggested that positive attitudes produce beneficial effects while real or anticipated negative experiences can result in the development of attitudes that erode confidence and potentially impact negatively on performance. This study…

Selection of an Optimum Air Defense Weapon Package Using MAUM (Multi-Attribute Utility Measurement).

DTIC Science & Technology

1983-06-01

SELECTION OF AN OPTIMUM AIR DEFENSE WEAPON PACKAGE USING MAUM by Wilton L. Ham June 1983 Thesis Advisor: R. G. Nickerson Approved for public release...OSSTRIUTON STATEMEN4T (of if AlRpeat) Approved for public release; distribution unlimited. I?. 01STVAGUTgOg STATE[MENT (of me ubeh’ei antered Ian...hold": do not fire except in self defense. 4. Firing Commands. These are commands issued regard- less of the weapons control in effect. There are three

CrossTalk. The Journal of Defense Software Engineering. Volume 16, Number 11, November 2003

DTIC Science & Technology

2003-11-01

memory area, and stack pointer. These systems are classified as preemptive or nonpreemptive depending on whether they can preempt an existing task or not...of charge. The Software Technology Support Center was established at Ogden Air Logistics Center (AFMC) by Headquarters U.S. Air Force to help Air...device. A script file could be a list of commands for a command interpreter such as a batch file [15]. A communications port consists of a queue to hold

STS-87 Commander Kevin R. Kregel suits up

NASA Technical Reports Server (NTRS)

1997-01-01

STS-87 Commander Kevin Kregel sits in his launch and entry suit in the Operations and Checkout Building holding a cap of his sons soccer team of which Kregel is the coach. Shortly, he and the five other crew members of STS-87 will depart for Launch Pad 39B, where the Space Shuttle Columbia awaits liftoff on a 16-day mission to perform microgravity and solar research. A veteran of two space flights (STS-70 and -78), Kregel has logged more than 618 hours in space.

Commanders and Cyber Chat: Should More Guidance be Provided for Social Networking Sites

DTIC Science & Technology

2011-04-01

his favorite book is Mein Kampf, his favorite movie is the Nazi propaganda film, Triumph of the Will, his interests are “white women, and his...service member wearing a Navy uniform and holding a Confederate insignia is on a commander’s friends list? Is that commander responsible for...Cybervetting and Posting. January 10, 2011. www.inamecheck.com. 18 Ibid. 19 Ibid. 20 Baron, Kevin. "Watchdog group: Dozens of active-duty found on neo- Nazi

Investigation of piloting aids for manual control of hypersonic maneuvers

NASA Technical Reports Server (NTRS)

Raney, David L.; Phillips, Michael R.; Person, Lee H., Jr.

1995-01-01

An investigation of piloting aids designed to provide precise maneuver control for an air-breathing hypersonic vehicle is described. Stringent constraints and nonintuitive high-speed flight effects associated with maneuvering in the hypersonic regime raise the question of whether manual control of such a vehicle should even be considered. The objectives of this research were to determine the extent of manual control that is desirable for a vehicle maneuvering in this regime and to identify the form of aids that must be supplied to the pilot to make such control feasible. A piloted real-time motion-based simulation of a hypersonic vehicle concept was used for this study, and the investigation focused on a single representative cruise turn maneuver. Piloting aids, which consisted of an auto throttle, throttle director, autopilot, flight director, and two head-up display configurations, were developed and evaluated. Two longitudinal control response types consisting of a rate-command/attitude-hold system and a load factor-rate/load-factor-hold system were also compared. The complete set of piloting aids, which consisted of the autothrottle, throttle director, and flight director, improved the average Cooper-Harper flying qualities ratings from 8 to 2.6, even though identical inner-loop stability and control augmentation was provided in all cases. The flight director was determined to be the most critical of these aids, and the cruise turn maneuver was unachievable to adequate performance specifications in the absence of this flight director.

Investigating the Role of an Inquiry-Based Biology Lab Course on Student Attitudes and Views toward Science

ERIC Educational Resources Information Center

Jeffery, Erica; Nomme, Kathy; Deane, Thomas; Pollock, Carol; Birol, Gülnur

2016-01-01

Students' academic experiences can influence their conceptualization of science. In contrast experts hold particular beliefs, perceptions, opinions, and attitudes about science that are often absent in first-year undergraduate students. Shifts toward more expert-like attitudes and views have been linked to improved student engagement,…

An Examination of Gender Differences in Mexican-American Attitudes toward Family and Career Roles.

ERIC Educational Resources Information Center

Gowan, Mary; Trevino, Melanie

1998-01-01

Examined attitudes of 76 Mexican-American females and 62 Mexican-American males about the role of the woman in the workplace and child care responsibility of working parents. Controlling for age, marital status, number of children, and acculturation, males were more likely to hold traditional attitudes than women. (SLD)

Understanding the Relationship between Student Attitudes and Student Learning

ERIC Educational Resources Information Center

Cahill, Michael J.; McDaniel, Mark A.; Frey, Regina F.; Hynes, K. Mairin; Repice, Michelle; Zhao, Jiuqing; Trousil, Rebecca

2018-01-01

Student attitudes, defined as the extent to which one holds expertlike beliefs about and approaches to physics, are a major research topic in physics education research. An implicit but rarely tested assumption underlying much of this research is that student attitudes play a significant part in student learning and performance. The current study…

A double standard for "Hooking Up": How far have we come toward gender equality?

PubMed

Allison, Rachel; Risman, Barbara J

2013-09-01

While sexual attitudes have liberalized in the past half century, research is mixed as to whether attitudes have become less gendered over time. Recent studies on college students' sexual and romantic relationships suggest that a sexual double standard continues to organize sexuality on many campuses. Data from the Online College Social Life Survey shed light on students' evaluation of casual sex, or "hooking up." In addition to exploring gendered attitudinal patterns, we use gender structure theory to explore how individual characteristics and normative expectations of campus group affiliations shape attitudes. While three quarters of students do not hold different standards for men and women's hooking up, attitudes are more conservative than liberal, with almost half of students losing respect for men and women who hook up "a lot." However, men are more likely to hold a traditional double standard, while women are more likely to espouse egalitarian conservative attitudes. Individual characteristics, including age, religion, race, social class and sexual orientation are frequently related to sexual attitudes, as are number of hook ups, fraternity/sorority affiliation and varsity athletic participation. Published by Elsevier Inc.

Is Pornography Really about "Making Hate to Women"? Pornography Users Hold More Gender Egalitarian Attitudes Than Nonusers in a Representative American Sample.

PubMed

Kohut, Taylor; Baer, Jodie L; Watts, Brendan

2016-01-01

According to radical feminist theory, pornography serves to further the subordination of women by training its users, males and females alike, to view women as little more than sex objects over whom men should have complete control. Composite variables from the General Social Survey were used to test the hypothesis that pornography users would hold attitudes that were more supportive of gender nonegalitarianism than nonusers of pornography. Results did not support hypotheses derived from radical feminist theory. Pornography users held more egalitarian attitudes--toward women in positions of power, toward women working outside the home, and toward abortion--than nonusers of pornography. Further, pornography users and pornography nonusers did not differ significantly in their attitudes toward the traditional family and in their self-identification as feminist. The results of this study suggest that pornography use may not be associated with gender nonegalitarian attitudes in a manner that is consistent with radical feminist theory.

Yurchikhin poses for a photo in the SM during Expedition 15

NASA Image and Video Library

2007-06-03

ISS015-E-10628 (3 June 2007) --- Cosmonaut Fyodor N. Yurchikhin, Expedition 15 commander representing Russia's Federal Space Agency, holds a garlic planter in the Zvezda Service Module of the International Space Station.

STS-47 crew during fire fighting exercises at JSC's Fire Training Pit

NASA Technical Reports Server (NTRS)

1992-01-01

STS-47 Endeavour, Orbiter Vehicle (OV) 105, crewmembers line up along water hoses to extinguish a blaze in JSC's Fire Training Pit during fire fighting exercises. Manning the hose in the foreground are Payload Specialist Mamoru Mohri, holding the hose nozzle, backup Payload Specialist Takao Doi, Mission Specialist (MS) Jerome Apt, and Commander Robert L. Gibson, at rear. Lined up on the second hose are Pilot Curtis L. Brown, Jr, holding the hose nozzle, followed by MS N. Jan Davis, MS and Payload Commander (PLC) Mark C. Lee, and backup Payload Specialist Stan Koszelak. A veteran firefighter monitors the effort from a position between the two hoses. In the background, backup Payload Specialist Chiaki Naito-Mukai, donning gloves, and MS Mae C. Jemison look on. The Fire Training Pit is located across from the Gilruth Center Bldg 207. Mohri, Doi, and Mukai all represent Japan's National Space Development Agency (NASDA).

Factors contributing to attitude exchange amongst preservice elementary teachers

NASA Astrophysics Data System (ADS)

Palmer, David H.

2002-01-01

Previous research has shown that elementary education majors often dislike science and lack confidence in their ability to teach it. This is an important problem because students who hold these attitudes are likely to avoid teaching science, or teach it poorly, when they become teachers. It is therefore necessary to identify preservice elementary teachers who hold negative attitudes towards science, and attempt to convert these attitudes to positive before they become teachers. This study was designed to identify students whose attitudes had changed from negative to positive (i.e., attitude exchange had occurred) after participating in a one-semester elementary science education course, and to identify the course factors that were responsible. Four participants were individually interviewed. The transcripts indicated that attitude exchange had occurred for each of the four students. Each student described several features of the course that had a positive influence. These were of three main types: personal attributes of the tutor, specific teaching strategies, and external validation. It was proposed that many of the individual factors were effective because they represented either performance accomplishments or vicarious experience as defined by Bandura (Psychological Review, 84, 1977, 191-215).

Comparison of two head-up displays in simulated standard and noise abatement night visual approaches

NASA Technical Reports Server (NTRS)

Cronn, F.; Palmer, E. A., III

1975-01-01

Situation and command head-up displays were evaluated for both standard and two segment noise abatement night visual approaches in a fixed base simulation of a DC-8 transport aircraft. The situation display provided glide slope and pitch attitude information. The command display provided glide slope information and flight path commands to capture a 3 deg glide slope. Landing approaches were flown in both zero wind and wind shear conditions. For both standard and noise abatement approaches, the situation display provided greater glidepath accuracy in the initial phase of the landing approaches, whereas the command display was more effective in the final approach phase. Glidepath accuracy was greater for the standard approaches than for the noise abatement approaches in all phases of the landing approach. Most of the pilots preferred the command display and the standard approach. Substantial agreement was found between each pilot's judgment of his performance and his actual performance.

Mir 22 and STS-81 crew work with gyrodyne

NASA Image and Video Library

1997-02-04

STS081-301-031 (12-22 Jan 1997) --- Shortly after docking of the Space Shuttle Atlantis and Russia's Mir Space Station, crew members from the respective spacecraft begin to transfer hardware from the Spacehab Double Module (DM) onto the Mir complex. Here, cosmonaut Valeri G. Korzun, Mir-22 commander, along with astronauts Michael A. Baker, commander, and Brent W. Jett, Jr., pilot, unstow a gyrodyne, device for attitude control, transfer to Mir.

Astronaut Alan Bean reads data from book while holding teleprinter tape

NASA Image and Video Library

1973-08-08

SL3-111-1514 (July-September 1973) --- Astronaut Alan L. Bean, Skylab 3 commander, reads data from book in his right hand while holding teleprinter tape in his left hand, in the ward room of the Skylab space station's Orbital Workshop (OWS) crew quarters. This photograph was taken with a 35mm Nikon camera held by one of Bean's fellow crewmen during the 56.5 day second manned Skylab mission in Earth orbit. Photo credit: NASA

Full quaternion based finite-time cascade attitude control approach via pulse modulation synthesis for a spacecraft.

PubMed

Mazinan, A H; Pasand, M; Soltani, B

2015-09-01

In the aspect of further development of investigations in the area of spacecraft modeling and analysis of the control scheme, a new hybrid finite-time robust three-axis cascade attitude control approach is proposed via pulse modulation synthesis. The full quaternion based control approach proposed here is organized in association with both the inner and the outer closed loops. It is shown that the inner closed loop, which consists of the sliding mode finite-time control approach, the pulse width pulse frequency modulator, the control allocation and finally the dynamics of the spacecraft is realized to track the three-axis referenced commands of the angular velocities. The pulse width pulse frequency modulators are in fact employed in the inner closed loop to accommodate the control signals to a number of on-off thrusters, while the control allocation algorithm provides the commanded firing times for the reaction control thrusters in the overactuated spacecraft. Hereinafter, the outer closed loop, which consists of the proportional linear control approach and the kinematics of the spacecraft is correspondingly designed to deal with the attitude angles that are presented by quaternion vector. It should be noted that the main motivation of the present research is to realize a hybrid control method by using linear and nonlinear terms and to provide a reliable and robust control structure, which is able to track time varying three-axis referenced commands. Subsequently, a stability analysis is presented to verify the performance of the overall proposed cascade attitude control approach. To prove the effectiveness of the presented approach, a thorough investigation is presented compared to a number of recent corresponding benchmarks. Copyright © 2015 ISA. Published by Elsevier Ltd. All rights reserved.

Statistical Control Paradigm for Aerospace Structures Under Impulsive Disturbances

DTIC Science & Technology

2006-08-03

attitude control system with an innovative and robust statistical controller design shows significant promise for use in attitude hold mode operation...indicate that the existing attitude control system with an innovative and robust statistical controller design shows significant promise for use in...and three thrusters are for use in controlling the attitude of the satellite. Then the angular momentum of the satellite with three thrusters and a

Lessons Learned from FY82 US Army Aviation Mishaps.

DTIC Science & Technology

1983-07-01

command action to ensure inexperienced instructor pilots recognize the problems associated with inexpe-rience, particularly those related to anticipating...and failed to remove tiedowns before flight. These actions were the result of a. improper attitude regarding the requirement to perform preflight...lack of self-discipline (improper Attitude ) by encouraging pilot to fly unauthorized maneuvers which exceeded he ability of the pilot and aircraft

Managing Perceptions of United States Africa Command

DTIC Science & Technology

2009-02-12

and their effects on the wider community.10 How does this different perspective affect African perceptions? A review of African media reaction to... global inequities. Africans fit the attacks in a narrative of America being punished for its unilateral foreign policy, citing examples such as...Pew Global Attitudes survey mirrored these results.20 A review of the internal numbers of the Pew Global Attitudes African surveys reveals quite

14 CFR 91.131 - Operations in Class B airspace.

Code of Federal Regulations, 2010 CFR

2010-01-01

... lateral limits of that area. (3) Any person conducting pilot training operations at an airport within a... pilot in command holds a sport pilot certificate and has met— (A) The requirements of § 61.325 of this...

14 CFR 91.131 - Operations in Class B airspace.

Code of Federal Regulations, 2011 CFR

2011-01-01

... lateral limits of that area. (3) Any person conducting pilot training operations at an airport within a... pilot in command holds a sport pilot certificate and has met— (A) The requirements of § 61.325 of this...

Teachers' Attitudes towards Inclusion, Perceived Adequacy of Support and Classroom Learning Environment

ERIC Educational Resources Information Center

Monsen, Jeremy J.; Ewing, Donna L.; Kwoka, Maria

2014-01-01

Inclusive education has become a cornerstone of many government policies in an increasing number of countries, yet teachers have been found to hold mixed attitudes towards its implementation and usefulness. This article, using English terminology and thinking, aims to extend previous research on the effect of teacher attitudes towards inclusion in…

Mental Illness Stigma as a Mediator of Differences in Caucasian and South Asian College Students' Attitudes toward Psychological Counseling

ERIC Educational Resources Information Center

Loya, Fred; Reddy, Radhika; Hinshaw, Stephen P.

2010-01-01

Previous research has established that Asian Americans use mental health services less frequently and hold poorer attitudes toward psychological counseling than Caucasians. The authors directly tested whether stigmatizing beliefs regarding mental illness might explain such differential attitudes toward counseling in a South Asian and Caucasian…

Attitudes to Diversity: A Cross-Cultural Study of Education Students in Spain, England and the United States

ERIC Educational Resources Information Center

Molto, M. Cristina Cardona; Florian, Lani; Rouse, Martyn; Stough, Laura M.

2010-01-01

This study explores the beliefs and attitudes that university students enrolled in teacher education programmes in Spain, England and the US (Texas) hold about individuals who differ. A beliefs and attitudes toward difference scale (BATD) was constructed using nine dimensions of diversity; culture, language, socioeconomic status/social class,…

Pre-Service ELT Teachers' Attitudes towards Computer Use: A Turkish Survey

ERIC Educational Resources Information Center

Sariçoban, Arif

2013-01-01

Problem Statement: Computer technology plays a crucial role in foreign/second language (L2) instruction, and as such, L2 teachers display different attitudes towards the use of computers in their teaching activities. It is important to know what attitudes these teachers hold towards the use of computers and whether they have these varying…

Attitudes toward the Unification of Western Europe and Cross-National Suicide Rates: Eight European Countries, 1973-1990.

ERIC Educational Resources Information Center

Fernquist, Robert M.

2001-01-01

Political integration theory (Durkheim) argues that when political crises occur, individuals band together to solve the problem at hand, which yields lower suicide rates. This analysis examines a different component of political integration-attitudes. Cross-sectional time series analysis reveals that attitudes individuals hold toward such an event…

Attitude controls for VTOL aircraft

NASA Technical Reports Server (NTRS)

Pauli, F. A.

1971-01-01

Systems consist of single duct system with two sets of reaction control nozzles, one linked mechanically to pilot's controls, and other set driven by electric servomotors commanded by preselected combinations of electrical signals.

An investigation into constraints to sustainable vehicle ownership : a focus group study.

DOT National Transportation Integrated Search

2011-03-01

Though most Americans hold pro-environmental attitudes, an attitudes-behavior gap exists with respect to vehicle ownership. Significant constraints appear to prevent most people with environmental concerns from buying smaller, more fuel-efficient, le...

Teachers' Political Attitudes: Implications for Political Socialization

ERIC Educational Resources Information Center

Funderburk, Charles; Shaw, Paul C.

1976-01-01

This article describes a study in Pennsylvania which examined three political attitudes of public school teachers: alienation, political cynicism, and commitment to democratic values. Data analysis shows that teachers hold political beliefs supportive of the established political order. (Author/AV)

Ground station software for receiving and handling Irecin telemetry data

NASA Astrophysics Data System (ADS)

Ferrante, M.; Petrozzi, M.; Di Ciolo, L.; Ortenzi, A.; Troso, G

2004-11-01

The on board resources, needed to perform the mission tasks, are very limited in nano-satellites. This paper proposes a software system to receive, manage and process in Real Time the Telemetry data coming from IRECIN nanosatellite and transmit operator manual commands and operative procedures. During the receiving phase, it shows the IRECIN subsystem physical values, visualizes the IRECIN attitude, and performs other suitable functions. The IRECIN Ground Station program is in charge to exchange information between IRECIN and the Ground segment. It carries out, in real time during IRECIN transmission phase, IRECIN attitude drawing, sun direction drawing, power supply received from Sun, visualization of the telemetry data, visualization of Earth magnetic field and more other functions. The received data are memorized and interpreted by a module, parser, and distribute to the suitable modules. Moreover it allows sending manual and automatic commands. Manual commands are delivered by an operator, on the other hand, automatic commands are provided by pre-configured operative procedures. Operative procedures development is realized in a previous phase called configuration phase. This program is also in charge to carry out a test session by mean the scheduler and commanding modules allowing execution of specific tasks without operator control. A log module to memorize received and transmitted data is realized. A phase to analyze, filter and visualize in off line the collected data, called post analysis, is based on the data extraction form the log module. At the same time, the Ground Station Software can work in network allowing managing, receiving and sending data/commands from different sites. The proposed system constitutes the software of IRECIN Ground Station. IRECIN is a modular nanosatellite weighting less than 2 kg, constituted by sixteen external sides with surface-mounted solar cells and three internal Al plates, kept together by four steel bars. Lithium-ions batteries are used. Attitude is determined by two three-axis magnetometers and the solar panels data. Control is provided by an active magnetic control system. The spacecraft will be spin- stabilized with the spin-axis normal to the orbit. All IRECIN electronic components are SMD technology in order to reduce weight and size. The realized Electronic board are completely developed, realized and tested at the Vitrociset S.P.A. under control of Research and Develop Group

Astronaut Owen Garriott trims hair of Astronaut Alan Bean

NASA Technical Reports Server (NTRS)

1973-01-01

Scientist-Astronaut Owen K. Garriott, Skylab 3 science pilot, trims the hair of Astronaut Alan L. Bean, commander, in this on-board photograph from the Skylab Orbital Workshop (OWS). Bean holds a vacuum hose to gather in loose hair.

78 FR 45278 - Sunshine Act Meeting

Federal Register 2010, 2011, 2012, 2013, 2014

2013-07-26

...) District Commander's overview of current project issues within the Rock Island District; and (3... MISSISSIPPI RIVER COMMISSION Sunshine Act Meeting AGENCY HOLDING THE MEETINGS: Mississippi River... Landing, La Cross, WI STATUS: Open to the public. MATTERS TO BE CONSIDERED: (1) Summary report by...

Expedition Seven Malenchenko eating in Zvezda Service module

NASA Image and Video Library

2003-09-01

ISS007-E-14282 (1 September 2003) --- Cosmonaut Yuri I. Malenchenko, Expedition 7 mission commander, is pictured holding a spoon while a package of food floats nearby in the Zvezda Service Module on the International Space Station (ISS). Malenchenko represents Rosaviakosmos.

Mildly Retarded Adults: Their Attitudes Toward Retardation

ERIC Educational Resources Information Center

Gan, Jennifer; And Others

1977-01-01

Responses to a 40-item questionnaire distributed to 50 mildly mentally retarded (MR) adults indicate that the majority possess accurate information about MR, hold realistic attitudes toward their own needs and abilities, and advocate community integration of the retarded. (Author/JG)

Army Sustainment. Volume 43, Issue 4, July-August 2011

DTIC Science & Technology

2011-08-01

ManageMent coMMand. he holdS a B.a. degree in criMinal juStice froM con- cordia college in Michigan and iS level ii certified in PrograM ManageMent and...got there. Think about the entire process, from raw-materials extraction to transformation at a plant or mill, movement of these materials to a manu...facturing plant , assembly of the product’s various components, packaging and further movement to a warehouse or distribution center, delivery to the

Chiao holds an Electronic Box Assembly from the TVIS in the SM during Expedition 10

NASA Image and Video Library

2005-02-17

ISS010-E-18164 (17 February 2005) --- Astronaut Leroy Chiao, Expedition 10 commander and NASA ISS science officer, holds an Electronic Box Assembly, and Violation Isolation and Stabilization (VIS) Controller Assembly, which is part of the Treadmill Vibration Isolation System (TVIS) in the Zvezda Service Module of the International Space Station (ISS). Also in view is a VIS/TM data cable and VIS/TM power cable. This box receives power and distributes it between the treadmill and the VIS subassemblies.

SKYLAB (SL) PRIME CREW - BLDG. 5 - JSC

NASA Image and Video Library

1973-03-20

S73-20759 (1 March 1973) --- Astronaut Charles Conrad Jr., commander of the first manned Skylab mission, takes items from the M512 materials processing equipment storage assembly during Skylab training at Johnson Space Center. Conrad is standing in the Multiple Docking Adapter (MDA) trainer in the JSC Mission Simulation and Training Facility. The assembly holds equipment designed to explore space manufacturing capability in a weightless state. Conrad is holding one of the experiment parts in his left hand. Photo credit: NASA

Ageism among college students: a comparative study between U.S. and China.

PubMed

Luo, Baozhen; Zhou, Kui; Jin, Eun Jung; Newman, Alisha; Liang, Jiayin

2013-03-01

It is often assumed that Chinese people tend to have a more positive attitude toward aging and old age than Americans, due to the cultural generalization of collectivism versus individualism. This study aimed to critically examine this assumption by using first-hand empirical data collected in a Chinese and an American university (standardized surveys and in-depth focus group interviews). Respectively, 980 college students in China and 332 college students in the U.S. were recruited for the standardized surveys; whereas two focus-group interviews in each country (4 participants per group) were conducted to collect more in-depth information. Contrary to the common assumption, this study revealed that Chinese students actually hold more negative attitudes toward aging and older people compared to their American peers. It was also found that females tend to hold more positive attitudes than male students across both cultures, though American female students hold more positive attitudes than Chinese female students. Chinese students' interactions with seniors are often limited to their grandparents whereas American students tend to reach out to non-grandparent seniors in larger communities. Chinese students' more negative attitudes toward aging and older people may be a result of a combination of educational, social, and economic factors-a higher level of age segregation (geographically, socially, and intellectually) and a lack of gerontological curriculum in Chinese educational system, the caregiving burden faced by the one-child generation compounded with lack of governmental support for caregiving, as well as the rising youth-oriented consumerist culture.

Inverse free steering law for small satellite attitude control and power tracking with VSCMGs

NASA Astrophysics Data System (ADS)

Malik, M. S. I.; Asghar, Sajjad

2014-01-01

Recent developments in integrated power and attitude control systems (IPACSs) for small satellite, has opened a new dimension to more complex and demanding space missions. This paper presents a new inverse free steering approach for integrated power and attitude control systems using variable-speed single gimbal control moment gyroscope. The proposed inverse free steering law computes the VSCMG steering commands (gimbal rates and wheel accelerations) such that error signal (difference in command and output) in feedback loop is driven to zero. H∞ norm optimization approach is employed to synthesize the static matrix elements of steering law for a static state of VSCMG. Later these matrix elements are suitably made dynamic in order for the adaptation. In order to improve the performance of proposed steering law while passing through a singular state of CMG cluster (no torque output), the matrix element of steering law is suitably modified. Therefore, this steering law is capable of escaping internal singularities and using the full momentum capacity of CMG cluster. Finally, two numerical examples for a satellite in a low earth orbit are simulated to test the proposed steering law.

Direct Inverse Control using an Artificial Neural Network for the Autonomous Hover of a Helicopter

DTIC Science & Technology

2014-10-05

that if r(t) is the command to hover; the output y(t) will simply track the input command and hold a hover for the helicopter. III. THE X- 4P ...being used to test the DIC techniques to simulate realistic flight conditions. The X- 4P was instrumented with a number of sensors and a data recording...research [1] for system identification. The X- 4P SISO transfer functions were developed by CIFER in order to compare results against the DIC control

Integrated multiple-model adaptive fault identification and reconfigurable fault-tolerant control for Lead-Wing close formation systems

NASA Astrophysics Data System (ADS)

Liu, Chun; Jiang, Bin; Zhang, Ke

2018-03-01

This paper investigates the attitude and position tracking control problem for Lead-Wing close formation systems in the presence of loss of effectiveness and lock-in-place or hardover failure. In close formation flight, Wing unmanned aerial vehicle movements are influenced by vortex effects of the neighbouring Lead unmanned aerial vehicle. This situation allows modelling of aerodynamic coupling vortex-effects and linearisation based on optimal close formation geometry. Linearised Lead-Wing close formation model is transformed into nominal robust H-infinity models with respect to Mach hold, Heading hold, and Altitude hold autopilots; static feedback H-infinity controller is designed to guarantee effective tracking of attitude and position while manoeuvring Lead unmanned aerial vehicle. Based on H-infinity control design, an integrated multiple-model adaptive fault identification and reconfigurable fault-tolerant control scheme is developed to guarantee asymptotic stability of close-loop systems, error signal boundedness, and attitude and position tracking properties. Simulation results for Lead-Wing close formation systems validate the efficiency of the proposed integrated multiple-model adaptive control algorithm.

Attitude analysis of the Earth Radiation Budget Satellite (ERBS) yaw turn anomaly

NASA Technical Reports Server (NTRS)

Kronenwetter, J.; Phenneger, M.; Weaver, William L.

1988-01-01

The July 2 Earth Radiation Budget Satellite (ERBS) hydrazine thruster-controlled yaw inversion maneuver resulted in a 2.1 deg/sec attitude spin. This mode continued for 150 minutes until the spacecraft was inertially despun using the hydrazine thrusters. The spacecraft remained in a low-rate Y-axis spin of .06 deg/sec for 3 hours until the B-DOT control mode was activated. After 5 hours in this mode, the spacecraft Y-axis was aligned to the orbit normal, and the spacecraft was commanded to the mission mode of attitude control. This work presents the experience of real-time attitude determination support following analysis using the playback telemetry tape recorded for 7 hours from the start of the attitude control anomaly.

Speed-constrained three-axes attitude control using kinematic steering

NASA Astrophysics Data System (ADS)

Schaub, Hanspeter; Piggott, Scott

2018-06-01

Spacecraft attitude control solutions typically are torque-level algorithms that simultaneously control both the attitude and angular velocity tracking errors. In contrast, robotic control solutions are kinematic steering commands where rates are treated as the control variable, and a servo-tracking control subsystem is present to achieve the desired control rates. In this paper kinematic attitude steering controls are developed where an outer control loop establishes a desired angular response history to a tracking error, and an inner control loop tracks the commanded body angular rates. The overall stability relies on the separation principle of the inner and outer control loops which must have sufficiently different response time scales. The benefit is that the outer steering law response can be readily shaped to a desired behavior, such as limiting the approach angular velocity when a large tracking error is corrected. A Modified Rodrigues Parameters implementation is presented that smoothly saturates the speed response. A robust nonlinear body rate servo loop is developed which includes integral feedback. This approach provides a convenient modular framework that makes it simple to interchange outer and inner control loops to readily setup new control implementations. Numerical simulations illustrate the expected performance for an aggressive reorientation maneuver subject to an unknown external torque.

A COTS-Based Attitude Dependent Contact Scheduling System

NASA Technical Reports Server (NTRS)

DeGumbia, Jonathan D.; Stezelberger, Shane T.; Woodard, Mark

2006-01-01

The mission architecture of the Gamma-ray Large Area Space Telescope (GLAST) requires a sophisticated ground system component for scheduling the downlink of science data. Contacts between the ````````````````` satellite and the Tracking and Data Relay Satellite System (TDRSS) are restricted by the limited field-of-view of the science data downlink antenna. In addition, contacts must be scheduled when permitted by the satellite s complex and non-repeating attitude profile. Complicating the matter further, the long lead-time required to schedule TDRSS services, combined with the short duration of the downlink contact opportunities, mandates accurate GLAST orbit and attitude modeling. These circumstances require the development of a scheduling system that is capable of predictively and accurately modeling not only the orbital position of GLAST but also its attitude. This paper details the methods used in the design of a Commercial Off The Shelf (COTS)-based attitude-dependent. TDRSS contact Scheduling system that meets the unique scheduling requirements of the GLAST mission, and it suggests a COTS-based scheduling approach to support future missions. The scheduling system applies filtering and smoothing algorithms to telemetered GPS data to produce high-accuracy predictive GLAST orbit ephemerides. Next, bus pointing commands from the GLAST Science Support Center are used to model the complexities of the two dynamic science gathering attitude modes. Attitude-dependent view periods are then generated between GLAST and each of the supporting TDRSs. Numerous scheduling constraints are then applied to account for various mission specific resource limitations. Next, an optimization engine is used to produce an optimized TDRSS contact schedule request which is sent to TDRSS scheduling for confirmation. Lastly, the confirmed TDRSS contact schedule is rectified with an updated ephemeris and adjusted bus pointing commands to produce a final science downlink contact schedule.

Attitudes among dentists and dental hygienists towards extended scope and independent practice of dental hygienists.

PubMed

Reinders, Jan J; Krijnen, Wim P; Onclin, Pieter; van der Schans, Cees P; Stegenga, Boudewijn

2017-02-01

Attitudes of dentists and dental hygienists towards extended scope and independent dental hygiene practice are described in several studies, but the results are heterogenous. The purpose of this systematic review was to compare the attitudes of dentists and dental hygienists towards extended scope and independent dental hygiene practice. PubMed, AMED and CINAHL were screened by two independent assessors to identify relevant studies. Only quantitative studies that reported the percentages of dentists' and dental hygienists' attitude towards extended scope and independent dental hygiene practice were included. The random-effects model was used to synthesise possible heterogenous influences. Meta proportions with regard to a positive attitude towards extended scope of practice are 0.54 for dentists and 0.81 for dental hygienists. Meta proportions of a positive attitude towards independent practice are 0.14 for dentists and 0.59 for dental hygienists. A meta analysis with regard to negative attitudes could only be performed on extended scope of practice and did not reveal a difference between the two professions. We obtained homogeneous outcomes of the studies included regarding negative attitudes of dentists . A minority of dentists hold negative attitudes towards extended scope of dental hygiene practice. Study outcomes regarding negative attitudes of dental hygienists were heterogeneous. Positive attitudes are present among a majority of dentists and dental hygienists with regard to extended scope of dental hygiene practice, while for independent dental hygiene practice this holds for a minority of dentists and a majority of dental hygienists. © 2016 FDI World Dental Federation.

Improved Re-Configurable Sliding Mode Controller for Reusable Launch Vehicle of Second Generation Addressing Aerodynamic Surface Failures and Thrust Deficiencies

NASA Technical Reports Server (NTRS)

Shtessel, Yuri B.

2002-01-01

In this report we present a time-varying sliding mode control (TV-SMC) technique for reusable launch vehicle (RLV) attitude control in ascent and entry flight phases. In ascent flight the guidance commands Euler roll, pitch and yaw angles, and in entry flight it commands the aerodynamic angles of bank, attack and sideslip. The controller employs a body rate inner loop and the attitude outer loop, which are separated in time-scale by the singular perturbation principle. The novelty of the TVSMC is that both the sliding surface and the boundary layer dynamics can be varied in real time using the PD-eigenvalue assignment technique. This salient feature is used to cope with control command saturation and integrator windup in the presence of severe disturbance or control effector failure, which enhances the robustness and fault tolerance of the controller. The TV-SMC is developed and tuned up for the X-33 sub-orbital technology demonstration vehicle in launch and re-entry modes. A variety of nominal, dispersion and failure scenarios have tested via high fidelity 6DOF simulations using MAVERIC/SLIM simulation software.

Presynaptic membrane potential affects transmitter release in an identified neuron in Aplysia by modulating the Ca2+ and K+ currents.

PubMed

Shapiro, E; Castellucci, V F; Kandel, E R

1980-01-01

We have examined the relationships between the modulation of transmitter release and of specific ionic currents by membrane potential in the cholinergic interneuron L10 of the abdominal ganglion of Aplysia californica. The presynaptic cell body was voltage-clamped under various pharmacological conditions and transmitter release from the terminals was assayed simultaneously by recording the synaptic potentials in the postsynaptic cell. When cell L10 was voltage-clamped from a holding potential of -60 mV in the presence of tetrodotoxin, graded transmitter release was evoked by depolarizing command pulses in the membrane voltage range (-35 mV to + 10 mV) in which the Ca(2+) current was also increasing. Depolarizing the holding potential of L10 results in increased transmitter output. Two ionic mechanisms contribute to this form of plasticity. First, depolarization inactivates some K(+) channels so that depolarizing command pulses recruit a smaller K(+) current. In unclamped cells the decreased K(+) conductance causes spike-broadening and increased influx of Ca(2+) during each spike. Second, small depolarizations around resting potential (-55 mV to -35 mV) activate a steady-state Ca(2+) current that also contributes to the modulation of transmitter release, because, even with most presynaptic K(+) currents blocked pharmacologically, depolarizing the holding potential still increases transmitter release. In contrast to the steady-state Ca(2+) current, the transient inward Ca(2+) current evoked by depolarizing clamp steps is relatively unchanged from various holding potentials.

Tracking Positions and Attitudes of Mars Rovers

NASA Technical Reports Server (NTRS)

Ali, Khaled; vanelli, Charles; Biesiadecki, Jeffrey; Martin, Alejandro San; Maimone, Mark; Cheng, Yang; Alexander, James

2006-01-01

The Surface Attitude Position and Pointing (SAPP) software, which runs on computers aboard the Mars Exploration Rovers, tracks the positions and attitudes of the rovers on the surface of Mars. Each rover acquires data on attitude from a combination of accelerometer readings and images of the Sun acquired autonomously, using a pointable camera to search the sky for the Sun. Depending on the nature of movement commanded remotely by operators on Earth, the software propagates attitude and position by use of either (1) accelerometer and gyroscope readings or (2) gyroscope readings and wheel odometry. Where necessary, visual odometry is performed on images to fine-tune the position updates, particularly on high-wheel-slip terrain. The attitude data are used by other software and ground-based personnel for pointing a high-gain antenna, planning and execution of driving, and positioning and aiming scientific instruments.

Inflight redesign of the IUE attitude control system

NASA Technical Reports Server (NTRS)

Femiano, M. D.

1986-01-01

The one- and two-gyro system designs of the International Ultraviolet Explorer (IUE) attitude control system (ACS) are examined. The inertial reference assembly that provides the primary attitude reference for IUE consists of six rate sensors which are single-axis rate integrating gyros. The gyros operate in a pulse rebalanced mode that produces an output pulse for 0.01 arcsec of motion about the input axis. The functions of the fine error sensor, fine sun sensor (FSS), the IUE reaction wheels, the onboard computer, and the hold/slew algorithm are described. The use of the hold/slew algorithm to compute the control voltage for the ACS based on the Kalman filter is studied. A two-gyro system was incorporated into IUE following gyro failure. The procedures for establishing attitude control with the two-gyro design based on the FSS is analyzed. The performance of the two-gyro system is evaluated; it is observed that the pitch and yaw gyro control is 0.24 arcsec and the control is sufficient to permit extended periods of observation.

Gender Differences Related to Attitudes Toward Suicide and Suicidal Behavior.

PubMed

Poreddi, Vijayalakshmi; Thimmaiah, Rohini; Ramu, Rajalakshmi; Selvi, Sugavana; Gandhi, Sailaxmi; Ramachandra; Math, Suresh Bada

2016-02-01

This descriptive study examined gender differences related to attitudes toward suicide among randomly selected urban residents. Data was collected using a standardized questionnaire through face-to-face interview. Our findings revealed that men hold more pro preventive attitudes to help persons with suicidal thoughts (80.3 %, p = 0.05) and agreed that suicidal attempts are impulsive (78.6 %, p = 0.01). However, they hold permissive attitude to help persons with incurable diseases and expressing death wishes to die (66 %, p = 0.05). A majority of men (78.6 %) than women agreed that "suicidal attempt is essentially a cry for help" (χ (2) = 11.798, p = 0.05). These gender differences need to be taken into consideration when developing appropriate programs to prevent suicide. Further, decriminalizing the law, high-quality research and raising awareness about suicide prevention among the general population is crucial in developing countries like India.

Application of the concept of dynamic trim control and nonlinear system inverses to automatic control of a vertical attitude takeoff and landing aircraft

NASA Technical Reports Server (NTRS)

Smith, G. A.; Meyer, G.

1981-01-01

A full envelope automatic flight control system based on nonlinear inverse systems concepts has been applied to a vertical attitude takeoff and landing (VATOL) fighter aircraft. A new method for using an airborne digital aircraft model to perform the inversion of a nonlinear aircraft model is presented together with the results of a simulation study of the nonlinear inverse system concept for the vertical-attitude hover mode. The system response to maneuver commands in the vertical attitude was found to be excellent; and recovery from large initial offsets and large disturbances was found to be very satisfactory.

Landsat-1 and Landsat-2 flight evaluation

NASA Technical Reports Server (NTRS)

1975-01-01

The flight performance of Landsat 1 and Landsat 2 is analyzed. Flight operations of the satellites are briefly summarized. Other topics discussed include: orbital parameters; power subsystem; attitude control subsystem; command/clock subsystem; telemetry subsystem; orbit adjust subsystem; magnetic moment compensating assembly; unified s-band/premodulation processor; electrical interface subsystem; thermal subsystem; narrowband tape recorders; wideband telemetry subsystem; attitude measurement sensor; wideband video tape recorders; return beam vidicon; multispectral scanner subsystem; and data collection subsystem.

Job Attitudes of AFSC (Air Force Systems Command) Acquisition Project Managers.

DTIC Science & Technology

1986-04-01

for performance (3rd ed.). Homewood, IL: Irwin. Ajzen , 1. & Fishbein , M . (1977). Attitude-behavior relations: A theoretical analysis and review of...factors that may be influencing job attitudes. I X. Chapter One I NTRODUCTION Today, about 2000 Air Force members manage the acquisit ion of bi1lions of...ison.i .ncl I (’ate" Nt ro’ p 2ject ranager s and cther AFSC o tI c rs ha N.e s ie m a r - a t t ,.des, IL t their att itudes ai e lower compai ed to

Attitudes and attitude change.

PubMed

Petty, R E; Wegener, D T; Fabrigar, L R

1997-01-01

We review empirical and conceptual developments over the past four years (1992-1995) on attitudes and persuasion. A voluminous amount of material was produced concerning attitude structure, attitude change, and the consequences of holding attitudes. In the structure area, particular attention is paid to work on attitude accessibility, ambivalence, and the affective versus cognitive bases of attitudes. In persuasion, our review examines research that has focused on high effort cognitive processes (central route), low effort processes (peripheral route), and the multiple roles by which variables can have an impact on attitudes. Special emphasis is given to work on cognitive dissonance and other biases in message processing, and on the multiple processes by which mood influences evaluations. Work on the consequences of attitudes focuses on the impact of attitudes on behavior and social judgments.

Optimal Variable-Structure Control Tracking of Spacecraft Maneuvers

NASA Technical Reports Server (NTRS)

Crassidis, John L.; Vadali, Srinivas R.; Markley, F. Landis

1999-01-01

An optimal control approach using variable-structure (sliding-mode) tracking for large angle spacecraft maneuvers is presented. The approach expands upon a previously derived regulation result using a quaternion parameterization for the kinematic equations of motion. This parameterization is used since it is free of singularities. The main contribution of this paper is the utilization of a simple term in the control law that produces a maneuver to the reference attitude trajectory in the shortest distance. Also, a multiplicative error quaternion between the desired and actual attitude is used to derive the control law. Sliding-mode switching surfaces are derived using an optimal-control analysis. Control laws are given using either external torque commands or reaction wheel commands. Global asymptotic stability is shown for both cases using a Lyapunov analysis. Simulation results are shown which use the new control strategy to stabilize the motion of the Microwave Anisotropy Probe spacecraft.

Attitude profile design program

NASA Technical Reports Server (NTRS)

1991-01-01

The Attitude Profile Design (APD) Program was designed to be used as a stand-alone addition to the Simplex Computation of Optimum Orbital Trajectories (SCOOT). The program uses information from a SCOOT output file and the user defined attitude profile to produce time histories of attitude, angular body rates, and accelerations. The APD program is written in standard FORTRAN77 and should be portable to any machine that has an appropriate compiler. The input and output are through formatted files. The program reads the basic flight data, such as the states of the vehicles, acceleration profiles, and burn information, from the SCOOT output file. The user inputs information about the desired attitude profile during coasts in a high level manner. The program then takes these high level commands and executes the maneuvers, outputting the desired information.

57. Photocopy of Hold, Booklet of General Plans, U.S.C.G.C. White ...

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

57. Photocopy of Hold, Booklet of General Plans, U.S.C.G.C. White Heath, WLM-545. U.S. Coast Guard Naval Engineering Department, U.S.C.G. Headquarters, Washington, D.C. Coast Guard Headquarters Drawing No. 540-WAGL-0103-019 C. sheet 7 of 7, dated May 1967; revised June 1971, December 1976, and April 1989. Original drawing property of the U.S. Coast Guard. - U.S. Coast Guard Cutter WHITE HEATH, USGS Integrated Support Command Boston, 427 Commercial Street, Boston, Suffolk County, MA

The Relationship Between Student Attitudes Toward Quality of Instruction and Other Aspects of a University. Research Report #14-70.

ERIC Educational Resources Information Center

Fiore, Neil A.; Sedlacek, William E.

Students holding diametrically opposed opinions about the quality of instruction at the University were compared on a number of other attitude variables. A comparison was made of 2,310 students choosing item 2B and 1,625 students choosing item 3B on the 1969 University Student Census, an attitude and activities inventory given annually to all…

Global Unemployment: Challenge to Futurists.

ERIC Educational Resources Information Center

Gross, Bertram; Singh, Kusum

Creative actions toward preventing global unemployment seek to (1) uncover the painful realities of joblessness, (2) design better models for fruitful discourse and action, (3) climb the "commanding policy heights" of moral vision, (4) move from autocratic to democratic corporatism, (5) uncover the kind of information that may hold power…

The Last Bastion of Sexual and Gender Prejudice? Sexualities, Race, Gender, Religiosity, and Spirituality in the Examination of Prejudice Toward Sexual and Gender Minorities.

PubMed

Cragun, Ryan T; Sumerau, J Edward

2015-01-01

Prior research has reported that many Americans hold prejudicial attitudes toward sexual and gender minorities. Most of this research analyzed attitudes toward target categories in isolation and not in relation to attitudes toward heterosexuals. In addition, most previous research has not examined attitudes of members of sexual and gender minority categories toward other categories. While some research has examined the influence of religiosity on attitudes toward sexual and gender minorities, none of these studies has examined religiosity while also examining the influence of spirituality. In this article we drew on insights from queer theory to examine attitudes toward heterosexual, gay, lesbian, bisexual, and transgender individuals, as well as individuals who practice polygamy, among college students. Three samples gathered over a four-year period (2009, 2011, 2013) at a private, nonsectarian, midsized urban university in the Southeastern United States were used. We found that heterosexuals had the most positive rating, followed in order of rating by gay/lesbian, bisexual, and transgender individuals, and then those who practice polygamy. Regression analyses revealed gender and race were significant predictors of attitudes toward various sexual and gender categories. Holding a literalistic view of the Bible and self-identifying as more religious were related to more negative views toward sexual minorities, while self-identifying as more spiritual was related to more positive views.

STS-57 crewmembers train in JSC's FB Shuttle Mission Simulator (SMS)

NASA Technical Reports Server (NTRS)

1993-01-01

STS-57 Endeavour, Orbiter Vehicle (OV) 105, Mission Specialist 2 (MS2) Nancy J. Sherlock, holding computer diskettes and procedural checklist, discusses equipment operation with Commander Ronald J. Grabe on the middeck of JSC's fixed based (FB) shuttle mission simulator (SMS). Payload Commander (PLC) G. David Low points to a forward locker location as MS3 Peter J.K. Wisoff switches controls on overhead panels MO42F and MO58F, and MS4 Janice E. Voss looks on. The FB-SMS is located in the Mission Simulation and Training Facility Bldg 5.

An improved lateral control wheel steering law for the Transport Systems Research Vehicle (TSRV)

NASA Technical Reports Server (NTRS)

Ragsdale, W. A.

1992-01-01

A lateral control wheel steering law with improved performance was developed for the Transport Systems Research Vehicle (TSRV) simulation and used in the Microwave Landing System research project. The control law converted rotational hand controller inputs into roll rate commands, manipulated ailerons, spoilers, and the rudder to achieve the desired roll rates. The system included automatic turn coordination, track angle hold, and autopilot/autoland modes. The resulting control law produced faster roll rates (15 degrees/sec), quicker response to command reversals, and safer bank angle limits, while using a more concise program code.

Job Attitudes of Workers with Two Jobs

ERIC Educational Resources Information Center

Zickar, Michael J.; Gibby, Robert E.; Jenny, Tim

2004-01-01

This article examines the job attitudes of people who hold more than one job. Satisfaction, stress, and organizational (continuance and affective) commitment were assessed for both primary and secondary jobs for 83 full-time workers who held two jobs concurrently. Consistency between job constructs across jobs was negligible, except for…

Gender Ideology, Household Behavior, and Backlash in Urban China

ERIC Educational Resources Information Center

Pimentel, Ellen Efron

2006-01-01

This article analyzes gender attitudes and behaviors of husbands and wives across three urban Chinese cohorts. While women remain egalitarian in gender ideology across cohorts, the percentage of men who hold egalitarian gender attitudes declines significantly across cohorts. At the same time, the division of household labor has become somewhat…

Effective Teaching Practices during Physical Fitness Testing

ERIC Educational Resources Information Center

Stewart, Amanda; Elliot, Steven; Boyce, B. Ann; Block, Martin E.

2005-01-01

Participation in fitness tests is among the most common memories many adults hold of physical education class. If students have a negative attitude towards fitness testing, they may be less likely to assess their own progress once they graduate. These negative attitudes often promote lifestyle choices that support participation in at-risk…

Attitudes of Suicidal Ideators and Non-Ideators toward Suicide.

ERIC Educational Resources Information Center

Ingram, Ellen; Ellis, Jon B.

This study was conducted to investigate attitudes that people hold about a hypothetical suicide victim in different situations. These situations depicted the victim in a scenario as either having cancer, Acquired Immune Deficiency Syndrome (AIDS), schizophrenia, or a depressive disorder. An analysis was made to discern whether there were…

Slavic and Italian Canadian Attitudes towards Authority.

ERIC Educational Resources Information Center

Ryan, Michael G.

Predicting that Italian Canadians would hold attitudes of greater hostility and anxiety toward authority than Slavic Canadians, this study, using 58 part-time summer students (29 Italians and 29 Slavs) at three universities in Canada, analyzed the subjects' responses to the five-response option Likert type scale. Results confirmed the early…

Changing Students' Stereotypes of Older Adults

ERIC Educational Resources Information Center

Wurtele, Sandy K.; Maruyama, LaRae

2013-01-01

Research suggests that university students tend to hold negative attitudes about older adults. However, there is some evidence to suggest that these ageist attitudes can be challenged and changed through curricular intervention. The current study was designed to determine whether the "Activities of Older Adults" exercise as part of a…

Analysis of Public Attitudes Toward Homosexual Behavior

ERIC Educational Resources Information Center

Nyberg, Kenneth L.; Alston, Jon P.

1976-01-01

Data from a 1974 representative survey of the white American adult population indicate most white Americans (75 percent) disapprove of homosexual relations. Persons who tend to hold more favorable attitudes toward homosexual relations are those under 30 years of age, those living in larger urban centers, and those with college experience. (Author)

The Phoenix Pluto Probe

NASA Technical Reports Server (NTRS)

Gunning, George R.; Spapperi, Jeff; Wilkinson, Jeffrey P.; Eldred, Jim; Labij, Dennis; Strinni, Meredith

1990-01-01

A design proposal for an unmanned probe to Pluto is presented. The topics covered include: (1) scientific instrumentation; (2) mission management, planning, and costing; (3) power and propulsion system; (4) structural subsystem; (5) command, control, and communication; and (6) attitude and articulation control.

Design, implementation and flight testing of PIF autopilots for general aviation aircraft

NASA Technical Reports Server (NTRS)

Broussard, J. R.

1983-01-01

The designs of Proportional-Integrated-Filter (PIF) auto-pilots for a General Aviation (NAVION) aircraft are presented. The PIF autopilot uses the sampled-data regulator and command generator tracking to determine roll select, pitch select, heading select, altitude select and localizer/glideslope capture and hold autopilot modes. The PIF control law uses typical General Aviation sensors for state feedback, command error integration for command tracking, digital complementary filtering and analog prefiltering for sensor noise suppression, a control filter for computation delay accommodation and the incremental form to eliminate trim values in implementation. Theoretical developments described in detail, were needed to combine the sampled-data regulator with command generator tracking for use as a digital flight control system. The digital PIF autopilots are evaluated using closed-loop eigenvalues and linear simulations. The implementation of the PIF autopilots in a digital flight computer using a high order language (FORTRAN) is briefly described. The successful flight test results for each PIF autopilot mode is presented.

CubeSat Attitude Determination and Helmholtz Cage Design

DTIC Science & Technology

2012-03-01

4.2.2. 3.6 CubeSat Components The CubeSat used in this experiment is commanded and controlled via the Arduino Mega board that is based on the ATmel...UNIVERSITY AIR FORCE INSTITUTE OF TECHNOLOGY Wright-Patterson Air Force Base , Ohio APPROVED FOR PUBLIC RELEASE; DISTRIBUTION UNLIMITED The views...ENY/12-M03 Abstract A method of 3-axis satellite attitude determination utilizing six body-fixed light sensors and a 3-axis magnetometer is analyzed. A

Wheel speed management control system for spacecraft

NASA Technical Reports Server (NTRS)

Goodzeit, Neil E. (Inventor); Linder, David M. (Inventor)

1991-01-01

A spacecraft attitude control system uses at least four reaction wheels. In order to minimize reaction wheel speed and therefore power, a wheel speed management system is provided. The management system monitors the wheel speeds and generates a wheel speed error vector. The error vector is integrated, and the error vector and its integral are combined to form a correction vector. The correction vector is summed with the attitude control torque command signals for driving the reaction wheels.

Computer Techniques for Studying Coverage, Overlaps, and Gaps in Collections.

ERIC Educational Resources Information Center

White, Howard D.

1987-01-01

Describes techniques for using the Statistical Package for the Social Sciences (SSPS) to create tables for cooperative collection development across a number of libraries. Specific commands are given to generate holdings profiles focusing on collection coverage, overlaps, gaps, or other areas of interest, from a master bibliographic list. (CLB)

WA1 Antenna assembly cables and connector

NASA Image and Video Library

2002-08-06

ISS005-E-08721 (6 August 2002) --- Cosmonaut Valery G. Korzun, Expedition Five mission commander, holds one of the two amateur radio antennas in the Unity node on the International Space Station (ISS). The antennas will be installed during a spacewalk scheduled for August 22, 2002. Korzun represents Rosaviakosmos.

Onufrienko holds the Amateur Radio (HAM) WA3 Antenna Assembly, Expedition Four

NASA Image and Video Library

2002-01-12

ISS004-E-5931 (January 2002) --- Cosmonaut Yury I. Onufrienko, Expedition Four mission commander representing Rosaviakosmos, works with the Amateur Radio (HAM) WA3 Antenna Assembly in the Zvezda Service Module on the International Space Station (ISS). The image was taken with a digital still camera.

Rock sample brought to earth from the Apollo 12 lunar landing mission

NASA Technical Reports Server (NTRS)

1969-01-01

Astronaut Charles Conrad Jr., commander of the Apollo 12 lunar landing mission, holds two lunar rocks which were among the samples brought back from the Moon by the Apollo 12 astronauts. The samples are under scientific examination in the Manned Spacecraft Center's Lunar Receiving Laboratory.

14 CFR 121.437 - Pilot qualification: Certificates required.

Code of Federal Regulations, 2011 CFR

2011-01-01

... 14 Aeronautics and Space 3 2011-01-01 2011-01-01 false Pilot qualification: Certificates required... Pilot qualification: Certificates required. (a) No pilot may act as pilot in command of an aircraft (or... pilots) unless he holds an airline transport pilot certificate and an appropriate type rating for that...

14 CFR 121.437 - Pilot qualification: Certificates required.

Code of Federal Regulations, 2010 CFR

2010-01-01

... 14 Aeronautics and Space 3 2010-01-01 2010-01-01 false Pilot qualification: Certificates required... Pilot qualification: Certificates required. (a) No pilot may act as pilot in command of an aircraft (or... pilots) unless he holds an airline transport pilot certificate and an appropriate type rating for that...

33 CFR 116.25 - Public meetings.

Code of Federal Regulations, 2010 CFR

2010-07-01

... 33 Navigation and Navigable Waters 1 2010-07-01 2010-07-01 false Public meetings. 116.25 Section... OF UNREASONABLY OBSTRUCTIVE BRIDGES § 116.25 Public meetings. (a) Any time the Administrator, Bridge... unreasonably obstructive, the District Commander will hold a public meeting near the location of the bridge to...

STS-32 crewmembers hold finish line banner as MS Low races on treadmill

NASA Technical Reports Server (NTRS)

1990-01-01

On Columbia's, Orbiter Vehicle (OV) 102's, middeck, STS-32 crewmembers hold marathon finish line banner in front of Mission Specialist (MS) G. David Low as he races on the treadmill. Commander Daniel C. Brandenstein (left) and Pilot James D. Wetherbee (right) each hold an end of the banner reading 'Columbia/STS 32 Around-The-World Marathon' as Low raises his arms above it in runners fashion. The crewmembers are enjoying one of the lighter moments of the 11-day mission. Wetherbee's mother competed in a marathon in Houston while the STS-32 crewmembers had their own in-space version. The treadmill served as an exerciser and also was an important element of onboard biomedical testing.

Recruiting, Selection, Training and Military Operations of Female Aircrew (Le Recrutement, la Selection, l’Entrainement et les Operations Militaires du Personnel Navigant Feminin)

DTIC Science & Technology

1990-08-01

remembered to pack shampoo , requested and received a minimal amount from the staff in order that we could wash our hair about half way through the...accepted. Thirdly we have performed a survey in the RNoAF, in order to map the attitudes of squadron commanders and flight commanders (34 males) about their...experience their situation seen from a female point of view. This survey consists of 36 questions covering subjects like recruiting, education, working

Staggering Inflation To Stabilize Attitude of a Solar Sail

NASA Technical Reports Server (NTRS)

Quadrelli, Marco; West, John

2007-01-01

A document presents computational-simulation studies of a concept for stabilizing the attitude of a spacecraft during deployment of such structures as a solar sail or other structures supported by inflatable booms. Specifically, the solar sail considered in this paper is a square sail with inflatable booms and attitude control vanes at the corners. The sail inflates from its stowed configuration into a square sail with four segments and four vanes at the tips. Basically, the concept is one of controlling the rates of inflation of the booms to utilize in mass-distribution properties to effect changes in the system s angular momentum. More specifically, what was studied were the effects of staggering inflation of each boom by holding it at constant length for specified intervals between intervals of increasing length until full length is reached. The studies included sensitivity analyses of effects of variations in mass properties, boom lengths, rates of increase in boom length, initial rates of rotation of the spacecraft, and several asymmetries that could arise during deployment. The studies led to the conclusion that the final attitude of the spacecraft could be modified by varying the parameters of staggered inflation. Computational studies also showed that by feeding back attitude and attitude-rate measurements so that corrective action is taken during the deployment, the final attitude can be maintained very closely to the initial attitude, thus mitigating the attitude changes incurred during deployment and caused by modeling errors. Moreover, it was found that by optimizing the ratio between the holding and length-increasing intervals in deployment of a boom, one could cause deployment to track a desired deployment profile to place the entire spacecraft in a desired attitude at the end of deployment.

Health professionals' attitudes towards suicide prevention initiatives.

PubMed

Brunero, S; Smith, J; Bates, E; Fairbrother, G

2008-09-01

Preventing suicide can depend upon the ability of a range of different health professionals to make accurate suicide risk assessments and treatment plans. The attitudes that clinicians hold towards suicide prevention initiatives may influence their suicide risk assessment and management skills. This study measures a group of non-mental health professionals' attitude towards suicide prevention initiatives. Health professionals that had attended suicide prevention education showed significantly more positive attitudes towards suicide prevention initiatives. The findings in this study further support the effectiveness of educating non-mental health professionals in suicide risk awareness and management.

KENNEDY SPACE CENTER, FLA. - The Return To Flight Task Group (RTFTG) holds the first public meeting at the Debus Center, KSC Visitor Complex. Members and staff at the table, from left, are retired Navy Rear Adm. Walter H. Cantrell, David Raspet, retired Air Force Col. Gary S. Geyer, Dr. Kathryn Clark, Dr. Decatur B. Rogers, Dr. Dan L. Crippen, Dr. Walter Broadnax and astronaut Carlos Noriega. The RTFTG was at KSC to conduct organizational activities, tour Space Shuttle facilities and receive briefings on Shuttle-related topics. The task group was chartered by NASA Administrator Sean O’Keefe to perform an independent assessment of NASA’s implementation of the final recommendations of the Columbia Accident Investigation Board. The group is co-chaired by former Shuttle commander Richard O. Covey and retired Air Force Lt. Gen. Thomas P. Stafford, who was an Apollo commander.

NASA Image and Video Library

2003-08-07

KENNEDY SPACE CENTER, FLA. - The Return To Flight Task Group (RTFTG) holds the first public meeting at the Debus Center, KSC Visitor Complex. Members and staff at the table, from left, are retired Navy Rear Adm. Walter H. Cantrell, David Raspet, retired Air Force Col. Gary S. Geyer, Dr. Kathryn Clark, Dr. Decatur B. Rogers, Dr. Dan L. Crippen, Dr. Walter Broadnax and astronaut Carlos Noriega. The RTFTG was at KSC to conduct organizational activities, tour Space Shuttle facilities and receive briefings on Shuttle-related topics. The task group was chartered by NASA Administrator Sean O’Keefe to perform an independent assessment of NASA’s implementation of the final recommendations of the Columbia Accident Investigation Board. The group is co-chaired by former Shuttle commander Richard O. Covey and retired Air Force Lt. Gen. Thomas P. Stafford, who was an Apollo commander.

Human reproduction: Jewish perspectives.

PubMed

Schenker, Joseph G

2013-11-01

Developments in science and technology and corresponding clinical applications raise new religious questions, often without clear answers. The role of theology in bioethics is integral to clarify perceived attitudes toward these developments for different religious communities. The Jewish attitude towards procreation is derived from the first commandment of God to Adam to 'Be fruitful and multiply'. Judaism allows the practice of all techniques of assisted reproduction when the oocyte and spermatozoon originate from the wife and husband respectively. This paper presents the attitude of Jewish Law -- Halacha to therapeutic procedures, such as IVF-embryo transfer, spermatozoa, oocytes, embryo donation, cryopreservation of genetic material, surrogacy, posthumous reproduction, gender preselection, reproductive and therapeutic cloning.

Predictors of Mexican American Mothers' and Fathers' Attitudes toward Gender Equality.

ERIC Educational Resources Information Center

Leaper, Campbell; Valin, Dena

1996-01-01

Among 50 Mexican American married mothers and 33 Mexican American married fathers of preschool children, egalitarian gender attitudes were related to greater educational attainment and placing lower value on competitiveness for both mothers and fathers, and to U.S. birth and holding communal values for mothers. Suggests that egalitarian gender…

The Concept of Black Music: A Survey Analysis.

ERIC Educational Resources Information Center

Handy, D. Antoinette

1978-01-01

The author's research suggests that: (1) the label "Black music" needs clarification; (2) many proponents of the slogan hold traditional White attitudes; (3) the attitudes of Black musicians themselves need to be changed; (4) Black music needs to be included in the political struggle; and (5) the music industry is discriminatory. (Author/MC)

Hearts and Minds: The Priority of Affective versus Cognitive Factors in Person Perception.

ERIC Educational Resources Information Center

Edwards, Kari; Hippel, William von

1995-01-01

In two experiments, affect-based and cognition-based attitudes toward a person were induced by varying sequence of affective and cognitive information presented to subjects while holding content constant. Results indicated affect-based attitudes were most effectively changed by affective persuasive appeals, whether these appeals were produced by…

LANDSAT-2 and LANDSAT-3 Flight evaluation report

NASA Technical Reports Server (NTRS)

Winchester, T. W.

1978-01-01

Flight performance analysis of LANDSAT 2 and LANDSAT 3 are presented for the period July 1978 to October 1978. Spacecraft operations and orbital parameters are summarized for each spacecraft. Data are provided on the performance and operation of the following subsystems onboard the spacecraft: power; attitude control; command/clock; telemetry; orbit adjust; magnetic moment compensating assembly; unified S band/premodulation processor; electrical interface; thermal narrowband tape recorders; wideband telemetry; attitude measurement sensor; wideband video tape recorders; return beam vidicon; multispectral scanner subsystem; and data collections.

Comparison of Job Attitudes between Physicians, Nurses, Other Medical Officers, and other Air Force Officers.

DTIC Science & Technology

1986-04-01

was to satisfy the author’s curiosity about the job attitudes of physicians and nurses in the Air Force medical career field. There are very few...feedback to leaders and managers within the medical career field. The fourth was to fulfill a requirement for graduation from Air Command and Staff College...version of the style prescribed by the American Psychological Association. I am indebted to many individuals who provided support in the completion of

Preliminary Validation of the Sex Trafficking Attitudes Scale.

PubMed

Houston-Kolnik, Jaclyn D; Todd, Nathan R; Wilson, Midge

2016-09-01

This study presents the Sex Trafficking Attitudes Scale (STAS), assessing cognitive, behavioral, and affective attitudes toward the sex trafficking of women and girls. Across two studies, exploratory and confirmatory factor analyses revealed and confirmed six subscales: (a) Knowledge About Sex Trafficking, (b) Awareness of Sex Trafficking, (c) Attitudes Toward Ability to Leave Sex Trafficking, (d) Attitudes Toward Helping Survivors, (e) Empathic Reactions Toward Sex Trafficking, and (f) Efficacy to Reduce Sex Trafficking. Results showed support for convergent validity as the subscales were associated with related measures. The STAS holds promise to expand research and inform efforts to support trafficking survivors. © The Author(s) 2016.

Who Aspires to a Science Career? A comparison of survey responses from primary and secondary school students

NASA Astrophysics Data System (ADS)

DeWitt, Jennifer; Archer, Louise

2015-09-01

There is broad international agreement about the importance of increasing participation in science once it is no longer compulsory in school, particularly among groups who have been historically underrepresented in science. Previous research reflects that despite broadly positive attitudes to science in and outside of school, there is limited translation of these attitudes into later aspirations and participation in science. The ASPIRES project, a five-year longitudinal study, has sought to understand students' science and career aspirations between the ages of 10 and 14 and to identify factors that contribute to, or hinder, the development of aspirations in science. Utilising data from two cross-sectional surveys conducted with students in their last year of primary school (9300 students) and in their third year of secondary school (4,600 students), we explore who is most likely to hold science aspirations and what factors seem to be connected to those aspirations at both time points. Descriptive, multivariate and multilevel modelling analyses of the data reflect consistency in who holds science aspirations, as well as highlighting that the factors connected to these aspirations-attitudes to school science and parental attitudes-are similar at both times. However, for many students, positive attitudes to school science and positive parental attitudes to science are not translating into children wanting a career in science. We suggest that differences in 'science capital' may help explain this persistent gap.

STS-57 crewmembers examine stowage locker contents during bench review

NASA Technical Reports Server (NTRS)

1993-01-01

STS-57 Endeavour, Orbiter Vehicle (OV) 105, crewmembers, wearing clean suits, examine stowage locker contents during their bench review at Boeing's Flight Equipment Processing Facility (FEPF) located near JSC. Pilot Brian J. Duffy pulls equipment from a locker while Commander Ronald J. Grabe (behind him), Mission Specialist 2 (MS2) Nancy J. Sherlock, Payload Commander (PLC) G. David Low (holding checklist), and MS3 Peter J.K. Wisoff discuss checklist procedures. The crewmembers reviewed equipment locations for OV-105 as well as the SPACEHAB-01 (Commercial Middeck Augmentation Module (CMAM)) experiment stowage locations. Photo taken by NASA JSC contract photographer Benny Benavides.

STS-45 blue shift crewmembers enjoy eating a meal on OV-104's middeck

NASA Technical Reports Server (NTRS)

1992-01-01

STS-45 Commander Charles F. Bolden retrieves a straw from his meal tray assembly secured on the middeck ceiling as other blue shift crewmembers around him enjoy eating their meals. Below Bolden, Pilot Brian Duffy balances a meal tray assembly on his lap as a food package and spoon freefloat between his hands. Payload Specialist Dirk D. Frimout, holding a food package and a spoon, steadies himself while eating by positioning his feet under a forward locker handhold strap. In the background, Mission Specialist (MS) and Payload Commander (PLC) Kathryn D. Sullivan prepares to take a bite of food.

KSC-01pp1336

NASA Image and Video Library

2001-07-19

KENNEDY SPACE CENTER, Fla. -- Expedition Three Commander Frank Culbertson (left) and STS-105 Commander Scott Horowitz (right), in the White Room at Launch Pad 39A, hold the sign for their mission. Both crews are at KSC to take part in Terminal Countdown Demonstration Test activities, which include emergency egress training, a simulated launch countdown and familiarization with the payload. Mission STS-105 will be transporting the Expedition Three crew, several payloads and scientific experiments to the International Space Station aboard Discovery. The current Expedition Two crew members on the Station will return to Earth on Discovery. Launch of Discovery is scheduled no earlier than Aug. 9, 2001

Portrait - Apollo 9 - Prime Crew - Cape

NASA Image and Video Library

1968-12-18

S68-56621 (18 Dec. 1968) --- These three astronauts are the prime crew of the Apollo 9 (Spacecraft 104/Lunar Module 3/Saturn 504) space mission. Left to right, are James A. McDivitt, commander; David R. Scott, command module pilot: and Russell L. Schweickart, lunar module pilot. The Apollo 9 launch is scheduled no earlier than February 28, 1969. In the background is the Apollo 8 space vehicle on Pad A, Launch Complex 39, Kennedy Space Center, which was launched on December 21, 1968. (Gaseous liquid oxygen is venting from the vehicle’s first [S-1C] stage during a countdown demonstration test). McDivitt holds a U.S. flag.

McArthur conducts SAFER onboard training during Expedition 12

NASA Image and Video Library

2005-10-21

ISS012-E-06035 (21 October 2005) --- Astronaut William S. McArthur Jr., Expedition 12 commander and NASA science officer, holds a Hand Control Module (HCM) while looking at laptop computer graphics during a Simplified Aid for EVA Rescue (SAFER) training session in the Unity node of the international space station.

McArthur conducts SAFER onboard training during Expedition 12

NASA Image and Video Library

2005-10-21

ISS012-E-06030 (21 October 2005) --- Astronaut William S. McArthur Jr., Expedition 12 commander and NASA science officer, holds a Hand Control Module (HCM) while looking at laptop computer graphics during a Simplified Aid for EVA Rescue (SAFER) training session in the Unity node of the international space station.

33 CFR 17.01-10 - Authority to receive gifts.

Code of Federal Regulations, 2010 CFR

2010-07-01

... 33 Navigation and Navigable Waters 1 2010-07-01 2010-07-01 false Authority to receive gifts. 17.01... GENERAL UNITED STATES COAST GUARD GENERAL GIFT FUND General Provisions § 17.01-10 Authority to receive gifts. (a) The Commandant, United States Coast Guard, may accept, receive, hold, or administer gifts...

Learning From Loneliness.

ERIC Educational Resources Information Center

Geller, Robert

1967-01-01

Allan Sillitoe's "The Loneliness of the Long Distance Runner" and the movie version of that novel capture the imagination of students because of the stature of the hero, Colin Smith. He refuses to "play it cool" or to "cop out"; he loses his race and wins his manhood. To the students, he carries the command to hold on…

14 CFR 105.45 - Use of tandem parachute systems.

Code of Federal Regulations, 2010 CFR

2010-01-01

...) Has completed a minimum of 500 freefall parachute jumps using a ram-air parachute, and (iii) Holds a... parachute jump with a tandem parachute system unless— (1) The main parachute has been packed by a certificated parachute rigger, the parachutist in command making the next jump with that parachute, or a person...

Williams receives a haircut from Yurchikhin in the SM during Expedition 15

NASA Image and Video Library

2007-06-03

ISS015-E-10596 (3 June 2007) --- Cosmonaut Fyodor N. Yurchikhin, Expedition 15 commander representing Russia's Federal Space Agency, cuts astronaut Sunita L. Williams' hair in the Zvezda Service Module of the International Space Station. Williams, flight engineer, holds a vacuum device fashioned to garner freshly cut hair.

Whitson receives haircut from Korzun in Zvezda

NASA Image and Video Library

2002-10-01

ISS005-E-18072 (October 2002) --- Cosmonaut Valery G. Korzun, Expedition Five mission commander, cuts astronaut Peggy A. Whitson’s hair in the Zvezda Service Module on the International Space Station (ISS). Whitson, flight engineer, holds a vacuum device the crew has fashioned to garner freshly cut hair, which is floating freely.

Whitson receives haircut from Korzun in Zvezda

NASA Image and Video Library

2002-10-01

ISS005-E-18071 (October 2002) --- Cosmonaut Valery G. Korzun, Expedition Five mission commander, cuts astronaut Peggy A. Whitson’s hair in the Zvezda Service Module on the International Space Station (ISS). Whitson, flight engineer, holds a vacuum device the crew has fashioned to garner freshly cut hair, which is floating freely.

Williams receives a haircut from Yurchikhin in the SM during Expedition 15

NASA Image and Video Library

2007-06-03

ISS015-E-10595 (3 June 2007) --- Cosmonaut Fyodor N. Yurchikhin, Expedition 15 commander representing Russia's Federal Space Agency, cuts astronaut Sunita L. Williams' hair in the Zvezda Service Module of the International Space Station. Williams, flight engineer, holds a vacuum device fashioned to garner freshly cut hair.

Expedition 24 State Commission

NASA Image and Video Library

2010-06-13

Head of the Russian Federal Space Agency, Anatoly Perminov holds a poster given to him by the crew of Expedition 24 during the State Commission meeting to approve the Soyuz launch of Expedition 24 Flight Engineers Doug Wheelock, Shannon Walker and Soyuz Commander Fyodor Yurchikhin on Monday, June 14, 2010 in Baikonur, Kazakhstan. Photo Credit: (NASA/Carla Cioffi)

FORRAY experiment for the ESA DELTA Research during Expedition 8/9 joint operations

NASA Image and Video Library

2004-05-01

ISS009-E-07646 (May 2004) --- Cosmonaut Gennady I. Padalka, Expedition 9 commander representing Russia’;s Federal Space Agency, holds a procedures checklist as the Fluorescence Orbital Radiation Risk Assessment Using Yeast (FORRAY) assembly floats freely nearby in the Zvezda Service Module of the International Space Station (ISS).

46 CFR 154.350 - Bilge and ballast systems in the cargo area.

Code of Federal Regulations, 2010 CFR

2010-10-01

..., and insulation spaces must have a means of sounding the space or other means of detecting liquid leakage specially approved by the Commandant (CG-522). (b) Each hold and insulation space must have a bilge drainage system. (c) Interbarrier spaces must have an eductor or pump for removing liquid cargo...

46 CFR 154.350 - Bilge and ballast systems in the cargo area.

Code of Federal Regulations, 2011 CFR

2011-10-01

..., and insulation spaces must have a means of sounding the space or other means of detecting liquid leakage specially approved by the Commandant (CG-522). (b) Each hold and insulation space must have a bilge drainage system. (c) Interbarrier spaces must have an eductor or pump for removing liquid cargo...

46 CFR 154.350 - Bilge and ballast systems in the cargo area.

Code of Federal Regulations, 2012 CFR

2012-10-01

..., and insulation spaces must have a means of sounding the space or other means of detecting liquid leakage specially approved by the Commandant (CG-ENG). (b) Each hold and insulation space must have a bilge drainage system. (c) Interbarrier spaces must have an eductor or pump for removing liquid cargo...

46 CFR 154.350 - Bilge and ballast systems in the cargo area.

Code of Federal Regulations, 2013 CFR

2013-10-01

..., and insulation spaces must have a means of sounding the space or other means of detecting liquid leakage specially approved by the Commandant (CG-ENG). (b) Each hold and insulation space must have a bilge drainage system. (c) Interbarrier spaces must have an eductor or pump for removing liquid cargo...

46 CFR 154.350 - Bilge and ballast systems in the cargo area.

Code of Federal Regulations, 2014 CFR

2014-10-01

..., and insulation spaces must have a means of sounding the space or other means of detecting liquid leakage specially approved by the Commandant (CG-ENG). (b) Each hold and insulation space must have a bilge drainage system. (c) Interbarrier spaces must have an eductor or pump for removing liquid cargo...

Casper at control board

NASA Image and Video Library

1996-06-25

STS077-372-019 (19-29 May 1996) --- Astronaut John H. Casper, commander, holds his finger on the power kill switch on the Spacehab 4 Module aboard the Earth-orbiting Space Shuttle Endeavour. Casper and five other astronauts spent almost ten days aboard Endeavour in support of the Spacehab 4 mission and a number of other payloads.

STS-47 crew participates in fire fighting exercises at JSC Fire Training Pit

NASA Technical Reports Server (NTRS)

1992-01-01

STS-47 Endeavour, Orbiter Vehicle (OV) 105, Mission Specialist (MS) N. Jan Davis (foreground) and MS and Payload Commander (PLC) Mark C. Lee, squinting and holding water hose, listen to instructions prior to participating in fire fighting exercises held at JSC's Fire Training Pit across from Gilruth Center Bldg 207.

Complexity of Language Ideologies in Transnational Movement: Korean "Jogi Yuhak" Families' Ambivalent Attitudes towards Local Varieties of English in Singapore

ERIC Educational Resources Information Center

Bae, So Hee

2015-01-01

This paper discusses the complex and competing language ideologies that Korean educational migrant families in Singapore hold about the normativity and legitimacy of English language varieties. During their educational migration in Singapore, Korean families show ambivalent attitudes toward the local variety of English in Singapore, Singlish.…

From Ally McBeal to Sabado Gigante: Contributions of Television Viewing to the Gender Role Attitudes of Latino Adolescents

ERIC Educational Resources Information Center

Rivadeneyra, Rocio; Ward, L. Monique

2005-01-01

Although previous findings indicate that frequent television viewing is associated with holding more stereotypical attitudes about gender, no studies have examined this connection among Latino youth, who are frequent viewers of both English- and Spanish-language programming. The present study attempted to rectify this situation by examining…

Key Stakeholdersí Attitudes towards Teacher Education Programs in TEFL: A Case Study of Farhangian University in Iran

ERIC Educational Resources Information Center

Gholami, Javad; Qurbanzada, Isa

2016-01-01

Recently, teacher training courses have attracted the researchers' special attention, while teacher education programs have not received as much attention. The present study investigated the attitudes key stakeholders in a teacher education program (i.e., student teachers, in-service teachers, and teacher educators) hold toward the appropriateness…

Age and Skin Tone as Predictors of Positive and Negative Racial Attitudes in Hispanic Children

ERIC Educational Resources Information Center

Stokes-Guinan, Katie

2011-01-01

Past research suggests that both White children and minority children, including Hispanics, hold pro-White biases. Although doll studies have been a popular way of assessing racial attitudes among children, several methodological issues have made it challenging to interpret the results from these studies. Furthermore, past research has failed to…

Teachers' Attitudes toward the Appointment of Women as School Leaders: The Case of the Arab Education System in Israel

ERIC Educational Resources Information Center

Arar, Khalid; Abramovitz, Ruth

2013-01-01

The trend towards gender equality in principalship appointments continues to interest researchers, especially when it appears in traditional societies that maintain patriarchal, anti-feminist attitudes and values. Arab society in Israel is undergoing transition from traditionalism to modernism. Arab women hold the majority of Arab school teaching…

CS Unplugged and Middle-School Students' Views, Attitudes, and Intentions regarding CS

ERIC Educational Resources Information Center

Taub, Rivka; Armoni, Michal; Ben-Ari, Mordechai

2012-01-01

Many students hold incorrect ideas and negative attitudes about computer science (CS). In order to address these difficulties, a series of learning activities called Computer Science Unplugged was developed by Tim Bell and his colleagues. These activities expose young people to central concepts in CS in an entertaining way without requiring a…

A Qualitative Study of Southern Baptist Mothers' and Their Daughters' Attitudes toward Sexuality

ERIC Educational Resources Information Center

Matyastik Baier, Margaret E.; Wampler, Karen S.

2008-01-01

This qualitative study of 14 Southern Baptist mother-daughter dyads uses grounded theory to explore the attitudes these mothers and daughters hold toward sexuality, religiosity, and spirituality, in addition to how they communicate with each other about these topics. Themes that emerge from the data include abstinence before marriage, lack of…

Attitudes Toward Victims of Rape: Effects of Gender, Race, Religion, and Social Class

ERIC Educational Resources Information Center

Nagel, Barbara; Matsuo, Hisako; McIntyre, Kevin P.; Morrison, Nancy

2005-01-01

Although previous literature focusing on perceptions of victims of rape has examined how gender, race, and culture influence the attitudes one holds toward victims, these studies have yielded mixed results. This study compared perceptions of victims of rape across a wide range of ages, educational backgrounds, religions, and income levels, while…

Language Competition in an Ethnic Autonomous Region: A Case of Ethnic Mongol Students in Inner Mongolia

ERIC Educational Resources Information Center

Ojijed, Wuyuncang

2010-01-01

This study examines language attitudes among Mongols in Inner Mongolia, using an extensive questionnaire. Forty Mongolian students who are studying at Inner Mongolia Normal University participated in this study. The results show that Mongols hold more positive attitudes toward putonghua and English than toward the Mongolian language in many…

Continuity or Break: Danto and Gadamer on the Crisis of Anti-Aestheticism

ERIC Educational Resources Information Center

Foster, James

2011-01-01

According to Arthur Danto, the crisis of modern art is not the abandonment of representation, nor an attempt at intentional "uglification," but a struggle to escape the aesthetic objectification of artworks. This attempt at escape has led modern artists to hold an indifferent attitude toward beauty, an attitude that has resulted in the readymade:…

Do Education and Income Affect Support for Democracy in Muslim Countries? Evidence from the "Pew Global Attitudes Project"

ERIC Educational Resources Information Center

Shafiq, M. Najeeb

2009-01-01

Using micro-level public opinion data from the "Pew Global Attitudes Project" 2005, this study investigates the effect of educational attainment and income on support for democracy in five predominantly Muslim countries: Indonesia, Jordan, Lebanon, Pakistan, and Turkey. Holding all else constant and compared to not finishing primary…

Do Education and Income Affect Support for Democracy in Muslim Countries? Evidence from the "Pew Global Attitudes Project"

ERIC Educational Resources Information Center

Shafiq, M. Najeeb

2010-01-01

Using micro-level public opinion data from the "Pew Global Attitudes Project 2005", this study investigates the effect of educational attainment and income on support for democracy in five predominantly Muslim countries: Indonesia, Jordan, Lebanon, Pakistan, and Turkey. Holding all else constant and compared to not finishing primary…

Student Preferences toward Microcomputer User Interfaces.

ERIC Educational Resources Information Center

Hazari, Sunil I.; Reaves, Rita R.

1994-01-01

Describes a study of undergraduates that was conducted to determine students' preferences toward Graphical User Interface versus Command Line Interface during computer-assisted instruction. Previous experience, comfort level, performance scores, and student attitudes are examined and compared, and the computer use survey is appended. (Contains 13…

Control theory analysis of a three-axis VTOL flight director. M.S. Thesis - Pennsylvania State Univ.

NASA Technical Reports Server (NTRS)

Niessen, F. R.

1971-01-01

A control theory analysis of a VTOL flight director and the results of a fixed-based simulator evaluation of the flight-director commands are discussed. The VTOL configuration selected for this study is a helicopter-type VTOL which controls the direction of the thrust vector by means of vehicle-attitude changes and, furthermore, employs high-gain attitude stabilization. This configuration is the same as one which was simulated in actual instrument flight tests with a variable stability helicopter. Stability analyses are made for each of the flight-director commands, assuming a single input-output, multi-loop system model for each control axis. The analyses proceed from the inner-loops to the outer-loops, using an analytical pilot model selected on the basis of the innermost-loop dynamics. The time response of the analytical model of the system is primarily used to adjust system gains, while root locus plots are used to identify dominant modes and mode interactions.

Correspondence between mothers' self-reported and observed child-rearing practices.

PubMed

Kochanska, G; Kuczynski, L; Radke-Yarrow, M

1989-02-01

The correspondence between self-reported child-rearing attitudes and practices and actual child management was examined among 68 mothers of young children. Data on mothers' verbal and physical control techniques along with children's responses (cooperation vs. resistance) were obtained during 90 min of spontaneous interaction in a naturalistic setting. Self-report data (the Block Q-Sort) were obtained 1-2 weeks later. The Block Q-Sort factors were combined to represent authoritarian and authoritative patterns of attitudes. The authoritarian pattern was positively associated with the use of direct commands, physical enforcements, reprimands, and prohibitive interventions, and negatively associated with the use of suggestions. The authoritative pattern was positively related to the use of suggestions and positive incentives, and negatively related to the use of physical enforcements, prohibitive interventions, and direct commands. Mothers' enjoyment of the parental role and their negative affect toward the child, as expressed in the Block Q-Sort, were more a result of the child's cooperation/resistance during the interaction than predictors of maternal control strategies.

Robust integral variable structure controller and pulse-width pulse-frequency modulated input shaper design for flexible spacecraft with mismatched uncertainty/disturbance.

PubMed

Hu, Qinglei

2007-10-01

This paper presents a dual-stage control system design method for the flexible spacecraft attitude maneuvering control by use of on-off thrusters and active vibration control by input shaper. In this design approach, attitude control system and vibration suppression were designed separately using lower order model. As a stepping stone, an integral variable structure controller with the assumption of knowing the upper bounds of the mismatched lumped perturbation has been designed which ensures exponential convergence of attitude angle and angular velocity in the presence of bounded uncertainty/disturbances. To reconstruct estimates of the system states for use in a full information variable structure control law, an asymptotic variable structure observer is also employed. In addition, the thruster output is modulated in pulse-width pulse-frequency so that the output profile is similar to the continuous control histories. For actively suppressing the induced vibration, the input shaping technique is used to modify the existing command so that less vibration will be caused by the command itself, which only requires information about the vibration frequency and damping of the closed-loop system. The rationale behind this hybrid control scheme is that the integral variable structure controller can achieve good precision pointing, even in the presence of uncertainties/disturbances, whereas the shaped input attenuator is applied to actively suppress the undesirable vibrations excited by the rapid maneuvers. Simulation results for the spacecraft model show precise attitude control and vibration suppression.

Spacecraft Attitude Tracking and Maneuver Using Combined Magnetic Actuators

NASA Technical Reports Server (NTRS)

Zhou, Zhiqiang

2010-01-01

The accuracy of spacecraft attitude control using magnetic actuators only is low and on the order of 0.4-5 degrees. The key reason is that the magnetic torque is two-dimensional and it is only in the plane perpendicular to the magnetic field vector. In this paper novel attitude control algorithms using the combination of magnetic actuators with Reaction Wheel Assembles (RWAs) or other types of actuators, such as thrusters, are presented. The combination of magnetic actuators with one or two RWAs aligned with different body axis expands the two-dimensional control torque to three-dimensional. The algorithms can guarantee the spacecraft attitude and rates to track the commanded attitude precisely. A design example is presented for Nadir pointing, pitch and yaw maneuvers. The results show that precise attitude tracking can be reached and the attitude control accuracy is comparable with RWAs based attitude control. The algorithms are also useful for the RWAs based attitude control. When there are only one or two workable RWAs due to RWA failures, the attitude control system can switch to the control algorithms for the combined magnetic actuators with the RWAs without going to the safe mode and the control accuracy can be maintained.

Simulation evaluation of two VTOL control/display systems in IMC approach and shipboard landing

NASA Technical Reports Server (NTRS)

Merrick, V. K.

1984-01-01

Two control/display systems, which differed in overall complexity but were both designed for VTOL flight operations to and from small ships in instrument meteorological conditions (IMC), were tested using the Ames Flight Simulator for Advanced Aircraft (FSAA). Both systems have attitude command in transition and horizontal-velocity command in hover; the more complex system also has longitudinal-acceleration and flightpath-angle command in transition, and vertical-velocity command in hover. The most important overall distinction between the two systems for the viewpoint of implementation is that in one - the more complex - engine power and nozzle position are operated indirectly through flight controllers, whereas in the other they are operated directly by the pilot. Simulated landings were made on a moving model of a DD 963 Spruance-class destroyer. Acceptable transitions can be performed in turbulence of 3 m/sec rms using either system. Acceptable landings up to sea state 6 can be performed using the more complex system, and up to sea state 5 using the other system.

Attributions and Attitudes of Mothers and Fathers in Kenya.

PubMed

Oburu, Paul Odhiambo

2011-07-01

OBJECTIVE: The present study examined differences and similarities between Kenyan mothers and fathers in attributions regarding successes and failures in caregiving situations and progressive versus authoritarian attitudes. DESIGN: Interviews were conducted with both mothers and fathers in 100 two-parent families in Kenya. RESULTS: Mothers were more likely to make attributions regarding adult-controlled failure in caregiving situations than were fathers, but mothers and fathers did not differ on attributions regarding uncontrollable success, child-controlled failure, or authoritarian or progressive attitudes. Moderate to large correlations were found between mothers and fathers in terms of attributions regarding uncontrollable success, authoritarian attitudes, and modernity of attitudes. CONCLUSIONS: Kenyan mothers and fathers hold very similar attributions for success and failures in caregiving situations as well as parenting attitudes.

Mir 22 and STS-81 crew work with gyrodyne

NASA Image and Video Library

1997-02-04

STS081-301-032 (12-22 Jan. 1997) --- Shortly after the docking of the Space Shuttle Atlantis and Russia's Mir Space Station, crewmembers from the respective spacecraft begin to transfer hardware from the Spacehab Double Module (DM) onto the Mir complex. In this scene, cosmonaut Valeri G. Korzun (second left) Mir-22 commander, along with astronauts Michael A. Baker (second right) commander, and Brent W. Jett, Jr., pilot, unstow a gyrodyne, a device used for attitude control, for transfer to Mir. Astronaut Marsha S. Ivins looks over a lengthy inventory of supplies to be transferred.

Ten Commandments of Formal Methods...Ten Years Later

NASA Technical Reports Server (NTRS)

Bowen, Jonathan P.; Hinchey, Michael G.

2006-01-01

More than a decade ago, in "Ten Commandments of Formal Methods," we offered practical guidelines for projects that sought to use formal methods. Over the years, the article, which was based on our knowledge of successful industrial projects, has been widely cited and has generated much positive feedback. However, despite this apparent enthusiasm, formal methods use has not greatly increased, and some of the same attitudes about the infeasibility of adopting them persist. Formal methodists believe that introducing greater rigor will improve the software development process and yield software with better structure, greater maintainability, and fewer errors.

The design of digital-adaptive controllers for VTOL aircraft

NASA Technical Reports Server (NTRS)

Stengel, R. F.; Broussard, J. R.; Berry, P. W.

1976-01-01

Design procedures for VTOL automatic control systems have been developed and are presented. Using linear-optimal estimation and control techniques as a starting point, digital-adaptive control laws have been designed for the VALT Research Aircraft, a tandem-rotor helicopter which is equipped for fully automatic flight in terminal area operations. These control laws are designed to interface with velocity-command and attitude-command guidance logic, which could be used in short-haul VTOL operations. Developments reported here include new algorithms for designing non-zero-set-point digital regulators, design procedures for rate-limited systems, and algorithms for dynamic control trim setting.

Singularity-free extraction of a quaternion from a direction-cosine matrix. [for spacecraft control and guidance

NASA Technical Reports Server (NTRS)

Klumpp, A. R.

1976-01-01

A computer algorithm for extracting a quaternion from a direction-cosine matrix (DCM) is described. The quaternion provides a four-parameter representation of rotation, as against the nine-parameter representation afforded by a DCM. Commanded attitude in space shuttle steering is conveniently computed by DCM, while actual attitude is computed most compactly as a quaternion, as is attitude error. The unit length of the rotation quaternion, and interchangeable of a quaternion and its negative, are used to advantage in the extraction algorithm. Protection of the algorithm against square root failure and division overflow are considered. Necessary and sufficient conditions for handling the rotation vector element of largest magnitude are discussed

Attitudes of medical students toward communication skills learning in Western Saudi Arabia.

PubMed

Alotaibi, Fawaz S; Alsaeedi, Abdullah

2016-07-01

To explore medical students' attitudes towards communication skills learning in Western Saudi Arabia and to examine impact of socio-demographic variables on the attitudes towards learning these skills.   In this cross-sectional study, sample of medical students were recruited from Taif University, Taif, Kingdom of Saudi Arabia during the second semester (January-May 2014). Participants were all year 2 (197 students) and year 5 (151 students). The study utilize the Communication Skills Attitude Scale (CSAS) to measure students' attitudes toward communication skills learning. The response rate was 93.9%.  The study showed that Taif medical students hold highly positive attitudes towards learning communication skills. Positive attitude score (PAS) was significantly higher in level 5 students, older age group.   Significant positive attitude toward learning communication skills clearly observed in target group. Students with more positive attitudes towards communication skills learning tended to be higher level and older age.

Sex-role attitudes across two cultures: United States and India.

PubMed

Rao, V V; Rao, V N

1985-12-01

This study tests whether students from India hold more traditional sex role attitudes compared to students from the US, whether women from either country hold more liberal sex role attitudes than males, and whether socioeconomic and demographic factors are better predictors of sex role attitudes among women of either culture. Data were obtained in 1978 from a sample of 409 undergraduate students from three Mississippi colleges in the US and 419 undergraduate and graduate students from three educational institutions in Andhra Pradesh, India. Sex role attitudes are measured by scaling developed by Scanzoni (1975). Out of a total possible score of 100, the mean values are 69.09 for the US sample and 53.62 for the Indian sample. Differences between the means for all 20 sex role attitudes are statistically significant. Results indicate that US females and Indian females had less traditional sex role attitudes than their respective counterparts. Mother role, wife role, father role, and total sex role attitude were more traditional among males in India compared to males in the US and among females in India compared to females in the US. More traditional attitudes were held by males in India with lower educated fathers and unemployed mothers. Religion was the only variable significantly related to Indian female students. In the US, traditional sex role attitudes of males were significantly related to high maternal income and residence in urban areas. More traditional sex role attitudes among US females were related to increasing age and marital status. Stepwise analysis reveals that the most powerful explanatory factors were sex and mother's occupation among Indian students and sex, father's income, and year in college among US students. What little variance was explained was explained by more variables in the US sample, and the best model predictors explained more variance in the US sample.

A Control Allocation Technique to Recover From Pilot-Induced Oscillations (CAPIO) Due to Actuator Rate Limiting

NASA Technical Reports Server (NTRS)

Yildiz, Yildiray; Kolmanovsky, Ilya V.

2010-01-01

This paper proposes a control allocation technique that can help pilots recover from pilot induced oscillations (PIO). When actuators are rate-saturated due to aggressive pilot commands, high gain flight control systems or some anomaly in the system, the effective delay in the control loop may increase depending on the nature of the cause. This effective delay increase manifests itself as a phase shift between the commanded and actual system signals and can instigate PIOs. The proposed control allocator reduces the effective time delay by minimizing the phase shift between the commanded and the actual attitude accelerations. Simulation results are reported, which demonstrate phase shift minimization and recovery from PIOs. Conversion of the objective function to be minimized and constraints to a form that is suitable for implementation is given.

Stability Properties and Cross Coupling Performance of the Control Allocation Scheme CAPIO

NASA Technical Reports Server (NTRS)

Yildiz, Yildiray; Kolmanovsky, Ilya V.

2010-01-01

This paper presents a stability analysis and an application of a recently developed Control Allocator for recovery from Pilot Induced Oscillations (CAPIO). When actuators are rate-saturated due to either aggressive pilot commands, high gain ight control systems or some anomaly in the system, the effective delay in the control loop may increase. This effective delay increase manifests itself as a phase shift between the commanded and actual system signals and can instigate Pilot induced Oscillations (PIO). CAPIO reduces the e ective time delay by minimizing the phase shift between the commanded and the actual attitude accelerations. We present a stability analysis of CAPIO for a scalar system. In addition, we present simulation results for aircraft with cross-coupling which demonstrates the potential of CAPIO serving as an effective PIO handler in adverse conditions.

Young Women's Perceptions of and Attitudes towards Mental Health and Mental Illness: A Qualitative Interview Study

ERIC Educational Resources Information Center

McQuoid, Courtney

2010-01-01

Late adolescents face a multitude of stressors in their daily lives and must find ways to weather this distress. The attitudes and beliefs late adolescents hold about seeking formal help when appropriate can influence their engagement in formal help seeking behaviors. Previous research suggests that adolescents' willingness to seek help for mental…

The Impact of Participation and Social Contacts on International Attitudes of Youth (The Case of Bolivia and Chile).

ERIC Educational Resources Information Center

Menanteau-Horta, Dario

Interviews with high school seniors in Bolivia (n=1,100) and Chile (n=2,460) demonstrated that individuals with international contacts hold more positive attitudes toward others than those individuals without this type of exposure. The study examined the students' opinions about other countries of the Latin American region, opportunities for…

A National Survey of Middle and High School Science Teachers' Responses to Standardized Testing: Is Science Being Devalued in Schools?

ERIC Educational Resources Information Center

Aydeniz, Mehmet; Southerland, Sherry A.

2012-01-01

This study explored American high school and middle school science teachers' attitudes toward the use of standardized testing for accountability purposes, their justification for the attitudes they hold and the impact of standardized testing on their instructional and assessment practices. A total of 161 science teachers participated in the study.…

Landsat-1 and Landsat-2 evaluation report, 23 January 1975 to 23 April 1975

NASA Technical Reports Server (NTRS)

1975-01-01

A description of the work accomplished with the Landsat-1 and Landsat-2 satellites during the period 23 Jan. - 23 Apr. 1975 was presented. The following information was given for each satellite: operational summary, orbital parameters, power subsystem, attitude control subsystem, command/clock subsystem, telemetry subsystem, orbit adjust subsystem, magnetic moment compensating assembly, unified S-band/premodulation processor, electrical interface subsystem, thermal subsystem, narrowband tape recorders, wideband telemetry subsystem, attitude measurement sensor, wideband video tape recorders, return beam vidicon, multispectral scanner subsystem, and data collection subsystem.

Attitudes toward consumer involvement in mental health services: a cross-sectional survey of Indian medical and nursing undergraduates.

PubMed

Poreddi, Vijayalakshmi; Gandhi, Sailaxmi; Thimmaiah, Rohini; Bm, Suresh

2016-06-01

To understand the views of medical and nursing undergraduates regarding consumer involvement in mental health services. A descriptive cross sectional survey was conducted in Bangalore, South India, among medical (n=155) and nursing (n=116) undergraduates using self-reported the Mental Health Consumer Participation Questionnaire of Happell et al. ''Mental health consumer'' or ''consumer'' is defined as a person who is currently using mental health services as either an in-patient or out-patient. The overall mean score on Mental Health Consumer Participation Questionnaire (54.1±6.7) implies that 64% of the participants hold positive attitudes towards consumer involvement in mental health services. Medical students possessed more positive attitudes than nursing in: consumer capacity (p<0.001), consumer as staff (p< 0.001) and overall score on mental health consumer participation questionnaire (t=6.892, p<0.001). The findings suggest that majority of the participants hold positive attitudes towards mental health consumer involvement in health care services. However, additional research is urgently required from developing countries to understand the effectiveness of involving mental health consumers in academic programs at undergraduate level.

Beliefs About Wife Beating Among Social Work Students in Taiwan.

PubMed

Haj-Yahia, Muhammad M; Shen, April Chiung-Tao

2017-07-01

Based on an integrative framework, this study addresses the beliefs that a group of social work students from Taiwan had about wife beating. A self-administered questionnaire was filled out by 790 students (76.5% female, 23.5% male) spanning all 4 years of undergraduate studies. The results show that male students exhibited a greater tendency than their female counterparts to justify wife beating and to hold battered women responsible for violence against them. This tendency was also found among students who held traditional attitudes toward women, students who held patriarchal expectations of marriage, and students who had witnessed interparental violence in childhood. In addition, male students and students with traditional attitudes toward women exhibited the strongest tendency to believe that wives benefit from beating. Conversely, female students expressed more willingness than their male counterparts to help battered women, as did students who held liberal attitudes toward women and students who held egalitarian expectations of marriage. Furthermore, female students and those with liberal attitudes toward women tended to hold violent husbands responsible for their behavior, and to express support for punishing violent husbands. This article concludes with a discussion of the study's limitations and the results' implications for future research on the topic.

Expedition 27 Docking

NASA Image and Video Library

2011-04-06

Top officials from the Russian Federal Space Agency and NASA hold a Soyuz post-docking press conference at the Russian Mission Control Center in Korolev, Russia on Thursday, April 7, 2011. The Soyuz TMA-21 docked to the International Space Station carrying Expedition 27 Soyuz Commander Alexander Samokutyaev, NASA Flight Engineer Ron Garan and Russian Flight Engineer Andrey Borisenko. Photo Credit: (NASA/Carla Cioffi)

14 CFR 61.58 - Pilot-in-command proficiency check: Operation of an aircraft that requires more than one pilot...

Code of Federal Regulations, 2013 CFR

2013-01-01

...-powered; (5) For a pilot authorized by the Administrator to operate an experimental turbojet-powered aircraft that possesses, by original design or through modification, more than a single seat, the required proficiency check for all of the experimental turbojet-powered aircraft for which the pilot holds an...

14 CFR 61.58 - Pilot-in-command proficiency check: Operation of an aircraft that requires more than one pilot...

Code of Federal Regulations, 2014 CFR

2014-01-01

...-powered; (5) For a pilot authorized by the Administrator to operate an experimental turbojet-powered aircraft that possesses, by original design or through modification, more than a single seat, the required proficiency check for all of the experimental turbojet-powered aircraft for which the pilot holds an...

STS-5 crew onboard portrait on port side middeck

NASA Technical Reports Server (NTRS)

1982-01-01

Crew onboard portrait taken on port side middeck shows Commander Brand holding Ace Moving Co sign (partially obscured, near center) and surrounded by Pilot Overmyer (in light t-shirt), Mission Specialist (MS) Allen (center bottom) and MS Lenoir (center top). The sign refers to the successful deployment of two commercial communications satellites on the flight's first two days.

STS-5 crew onboard portrait on port side middeck

NASA Image and Video Library

1982-11-16

Crew onboard portrait taken on port side middeck shows Commander Brand holding Ace Moving Co sign (partially obscured, near center) and surrounded by Pilot Overmyer (in light t-shirt), Mission Specialist (MS) Allen (center bottom) and MS Lenoir (center top). The sign refers to the successful deployment of two commercial communications satellites on the flight's first two days.

KSC-97pc453

NASA Image and Video Library

1997-03-13

The Space Shuttle Mission STS-83 crew talks to the media at Launch Complex 39A during the crew's Terminal Countdown Demonstration Test (TCDT). From left to right, they are Mission Commander James D. Halsell; Pilot Susan L. Still; Mission Specialists Michael L. Gernhardt, Donald Thomas, and Janice E. Voss (holding microphone); and Payload Specialists Roger K. Crouch and Gregory T. Linteris

Direct Fault Tolerant RLV Altitude Control: A Singular Perturbation Approach

NASA Technical Reports Server (NTRS)

Zhu, J. J.; Lawrence, D. A.; Fisher, J.; Shtessel, Y. B.; Hodel, A. S.; Lu, P.; Jackson, Scott (Technical Monitor)

2002-01-01

In this paper, we present a direct fault tolerant control (DFTC) technique, where by "direct" we mean that no explicit fault identification is used. The technique will be presented for the attitude controller (autopilot) for a reusable launch vehicle (RLV), although in principle it can be applied to many other applications. Any partial or complete failure of control actuators and effectors will be inferred from saturation of one or more commanded control signals generated by the controller. The saturation causes a reduction in the effective gain, or bandwidth of the feedback loop, which can be modeled as an increase in singular perturbation in the loop. In order to maintain stability, the bandwidth of the nominal (reduced-order) system will be reduced proportionally according to the singular perturbation theory. The presented DFTC technique automatically handles momentary saturations and integrator windup caused by excessive disturbances, guidance command or dispersions under normal vehicle conditions. For multi-input, multi-output (MIMO) systems with redundant control effectors, such as the RLV attitude control system, an algorithm is presented for determining the direction of bandwidth cutback using the method of minimum-time optimal control with constrained control in order to maintain the best performance that is possible with the reduced control authority. Other bandwidth cutback logic, such as one that preserves the commanded direction of the bandwidth or favors a preferred direction when the commanded direction cannot be achieved, is also discussed. In this extended abstract, a simplistic example is proved to demonstrate the idea. In the final paper, test results on the high fidelity 6-DOF X-33 model with severe dispersions will be presented.

Design and Integration of an All-Magnetic Attitude Control System for FASTSAT-HSV01's Multiple Pointing Objectives

NASA Technical Reports Server (NTRS)

DeKock, Brandon; Sanders, Devon; Vanzwieten, Tannen; Capo-Lugo, Pedro

2011-01-01

The FASTSAT-HSV01 spacecraft is a microsatellite with magnetic torque rods as it sole attitude control actuator. FASTSAT s multiple payloads and mission functions require the Attitude Control System (ACS) to maintain Local Vertical Local Horizontal (LVLH)-referenced attitudes without spin-stabilization, while the pointing errors for some attitudes be significantly smaller than the previous best-demonstrated for this type of control system. The mission requires the ACS to hold multiple stable, unstable, and non-equilibrium attitudes, as well as eject a 3U CubeSat from an onboard P-POD and recover from the ensuing tumble. This paper describes the Attitude Control System, the reasons for design choices, how the ACS integrates with the rest of the spacecraft, and gives recommendations for potential future applications of the work.

Positive expectations encourage generalization from a positive intergroup interaction to outgroup attitudes.

PubMed

Deegan, Matthew P; Hehman, Eric; Gaertner, Samuel L; Dovidio, John F

2015-01-01

The current research reveals that while positive expectations about an anticipated intergroup interaction encourage generalization of positive contact to outgroup attitudes, negative expectations restrict the effects of contact on outgroup attitudes. In Study 1, when Blacks and Whites interacted with positive expectations, interaction quality predicted outgroup attitudes to a greater degree than when groups interacted with negative expectations. When expectations (Studies 2 and 3) and the actual interaction quality (Study 4) were manipulated orthogonally, negative expectations about the interaction predicted negative outgroup attitudes, regardless of actual interaction quality. By contrast, participants holding positive expectations who experienced a positive interaction expressed positive outgroup attitudes, whereas when they experienced a negative interaction, they expressed outgroup attitudes as negative as those with negative expectations. Across all four studies, positive expectations encouraged developing outgroup attitudes consistent with interaction quality. © 2014 by the Society for Personality and Social Psychology, Inc.

A Comparative Analysis of Job Attitudes of Military Airlift Command Pilots.

DTIC Science & Technology

1986-04-01

1985). The survey is designed to measure the three widely accepted variables of successful leadership and management: success of the group, leadership ... management style, and the situational environment (Mahr, 1982). This is achieved through a 16-item demographic section followed by a 93-item attitudinal

LANDSAT-1 and LANDSAT-2 flight evaluation report, 23 January - 23 April 1977

NASA Technical Reports Server (NTRS)

1977-01-01

The LANDSAT operations from launch through orbital instrument observations are reviewed. Orbital parameters, power subsystem, attitude control subsystem, and command/clock subsystem are discussed. Other subsystems are also considered, such as telemetry, orbit adjust, electrical interface, thermal, wideband telemetry, multispectral scanner, and data collection.

Transforming the Army with Mission Command

DTIC Science & Technology

2015-06-12

organizations the work of John Kotter has served as a useful guide. “Changing behavior is less a matter of giving people analysis to influence their thoughts......fear or panic. The third is you cannot make me move deviance , driven by anger. The last is a very pessimistic attitude that leads to constant

Ground-based and in-flight simulator studies of flight characteristics of a twin-fuselage passenger transport airplane during approach and landing

NASA Technical Reports Server (NTRS)

Grantham, W. D.; Smith, P. M.; Neely, W. R., Jr.; Deal, P. L.; Yenni, K. R.

1985-01-01

Six-degree-of-freedom ground-based and in-flight simulator studies were conducted to evaluate the low-speed flight characteristics of a twin-fuselage passenger transport airplane and to compare these characteristics with those of a large, single-fuselage (reference) transport configuration similar to the Lockheed C-5A airplane. The primary piloting task was the approach and landing task. The results of this study indicated that the twin-fuselage transport concept had acceptable but unsatisfactory longitudinal and lateral-directional low-speed flight characteristics, and that stability and control augmentation would be required in order to improve the handling qualities. Through the use of rate-command/attitude-hold augmentation in the pitch and roll axes, and the use of several turn coordination features, the handling qualities of the simulated transport were improved appreciably. The in-flight test results showed excellent agreement with those of the six-degree-of-freedom ground-based simulator handling qualities tests. As a result of the in-flight simulation study, a roll-control-induced normal-acceleration criterion was developed. The handling qualities of the augmented twin-fuselage passenger transport airplane exhibited an improvement over the handling characteristics of the reference (single-fuselage) transport.

STS-26 crewmembers experiment with microgravity and eat on middeck

NASA Technical Reports Server (NTRS)

1988-01-01

STS-26 Mission Specialist John M. Lounge, using a beverage container, experiments with microgravity as Commander Frederick H. Hauck (left) and MS David C. Hilmers (right) look on. Lounge freefloats as he closes in on a sphere of the red liquid drifting in front of his mouth. Hauck holds a spoon while sipping from a beverage container as he balances a meal tray assembly on his thighs. Hilmers, partially blocked by the open airlock hatch and holding a spoon and a can of food, pauses to watch the experiment. Automated Directional Solidification Furnace (ADSF) and forward middeck lockers appear on Lounge's right.

Astronaut Robert Crippen holds training model of Skylab experiment

NASA Image and Video Library

1972-06-15

S72-43280 (15 June 1972) --- Astronaut Robert L. Crippen, Skylab Medical Experiment Altitude Test (SMEAT) commander, holds the training model of Skylab experiment T003, the aerosol analysis test, in this preview of SMEAT activity. He is part of a three-man SMEAT crew who will spend up to 56 days in the Crew Systems Division's 20-foot altitude chamber at the NASA Manned Spacecraft Center (MSC) beginning in mid-July to obtain medical data and evaluate medical experiment equipment for Skylab. The two crew members not shown in this view are astronauts Karol J. Bobko, SMEAT pilot, and Dr. William E. Thornton, SMEAT science pilot. Photo credit: NASA

The mediating role of facebook fan pages.

PubMed

Chih, Wen-Hai; Hsu, Li-Chun; Wang, Kai-Yu; Lin, Kuan-Yu

2014-01-01

Using the dual mediation hypothesis, this study investigates the role of interestingness (the power of attracting or holding one's attention) attitude towards the news, in the formation of Facebook Fan Page users' electronic word-of-mouth intentions. A total of 599 Facebook fan page users in Taiwan were recruited and structural equation modeling (SEM) was used to test the research hypotheses. The results show that both perceived news entertainment and informativeness positively influence interestingness attitude towards the news. Interestingness attitude towards the news subsequently influences hedonism and utilitarianism attitudes towards the Fan Page, which then influence eWOM intentions. Interestingness attitude towards the news plays a more important role than hedonism and utilitarianism attitudes in generating electronic word-of-mouth intentions. Based on the findings, the implications and future research suggestions are provided.

Cultural socialization in families with internationally adopted children.

PubMed

Lee, Richard M; Grotevant, Harold D; Hellerstedt, Wendy L; Gunnar, Megan R

2006-12-01

Cultural socialization attitudes, beliefs, and parenting behaviors were examined in families with internationally adopted children. The authors hypothesized that parents with lower color-blind racial attitudes would be more likely to engage in enculturation and racialization parenting behaviors because they hold stronger beliefs in the value and importance of cultural socialization. Using data from the Minnesota International Adoption Project, the results support this mediation model of cultural socialization. Individual variations in cultural socialization also are discussed in terms of child development and shifting adoption attitudes and practices. (c) 2006 APA, all rights reserved.

Cultural Socialization in Families With Internationally Adopted Children

PubMed Central

Lee, Richard M.; Grotevant, Harold D.; Hellerstedt, Wendy L.; Gunnar, Megan R.

2008-01-01

Cultural socialization attitudes, beliefs, and parenting behaviors were examined in families with internationally adopted children. The authors hypothesized that parents with lower color-blind racial attitudes would be more likely to engage in enculturation and racialization parenting behaviors because they hold stronger beliefs in the value and importance of cultural socialization. Using data from the Minnesota International Adoption Project, the results support this mediation model of cultural socialization. Individual variations in cultural socialization also are discussed in terms of child development and shifting adoption attitudes and practices. PMID:17176191

Quaternion normalization in additive EKF for spacecraft attitude determination

NASA Technical Reports Server (NTRS)

Bar-Itzhack, I. Y.; Deutschmann, J.; Markley, F. L.

1991-01-01

This work introduces, examines, and compares several quaternion normalization algorithms, which are shown to be an effective stage in the application of the additive extended Kalman filter (EKF) to spacecraft attitude determination, which is based on vector measurements. Two new normalization schemes are introduced. They are compared with one another and with the known brute force normalization scheme, and their efficiency is examined. Simulated satellite data are used to demonstrate the performance of all three schemes. A fourth scheme is suggested for future research. Although the schemes were tested for spacecraft attitude determination, the conclusions are general and hold for attitude determination of any three dimensional body when based on vector measurements, and use an additive EKF for estimation, and the quaternion for specifying the attitude.

Student perceptions of the nature of science and attitudes towards science education in an experiential science program

NASA Astrophysics Data System (ADS)

Jelinek, David John

1997-11-01

This study investigates student perceptions of the nature of science and student attitudes toward science education, then employs experiential teaching strategies to determine what role, if any, these play in enhancing those perceptions and attitudes. The literature review identifies three shortcomings that justify the need for such research, concluding that a study to help broaden knowledge regarding interactive effects of attitudes, perceptions, and experiential learning could add significantly to the literature base. This is an explorative case study of 20 high school students participating in an Upward Bound summer program at the University of California in Santa Barbara. A six-week course drawing upon experiential learning theory was devised and delivered to the students, then various qualitative data collection materials were administered. The objective was to investigate pre-, during-, and post-instruction perspectives of students, thus identifying core factors concerning attitudes and perceptions. Constant comparative analysis was used to investigate the multiple sources of data, resulting in: (a) a collection of emic perspectives that distinguish between pre- and post-perceptions of the nature of science and of attitudes towards science education; (b) three themes of enhanced students' images of science and scientists; (c) two themes suggesting sociological perspectives that help broaden student perceptions; and (d) interest and boredom as key motivational considerations. A model of nature of science enhancement is proposed, proceeding through four stages of: (a) engagement in meaningful, first-hand activities; (b) student accountability for active participation and reflectiveness; (c) emphasis of high importance and high interest values; and (d) in-depth, multiple encounters with the phenomena and processes. Finally, implications of catching and holding interest are discussed. It was found that various experiential strategies proved successful in catching student interest but the findings were ambiguous as to whether the effects would hold long term. However, comparisons with findings from previous studies strongly suggest that two major conditions strengthen the likelihood of holding interest: meaningfulness and imagination. These conditions and other practical implications are considered in light of the experiential context and data collected from this study.

Simulation study of two VTOL control/display systems in IMC approach and landing

NASA Technical Reports Server (NTRS)

Merrick, V. K.

1981-01-01

Both systems had full attitude command; the more complex system (Type 1) also had translational velocity command. The systems were applied to existing models of a VTOL lift-fan transport and the AV-8A Harrier. Simulated landings were made on a model of a DD963 Spruance-class destroyer. It was concluded that acceptable transitions and vertical landings can be performed, using the Type 1 system, in free-air turbulence up to 2.5 m/sec and sea state 6 and, using the Type 2 system, in free-air turbulence up to 1.5 m/sec and sea state 4.

View of Expedition 21 and STS-129 Crew Members working in the Node 2

NASA Image and Video Library

2009-11-24

S129-E-009492 (24 Nov. 2009) --- NASA astronauts Randy Bresnik (left), STS-129 mission specialist, and Jeffrey Williams, holding a camcorder, talk "International Space Station" on the eve of going separate directions when the space shuttle Atlantis and the orbital outpost are scheduled to undock. Williams assumes command today of the station crew.

OBR-1-1/Fizika-LT(Letaushaya Tarelka/Flying Disk) experiment

NASA Image and Video Library

2009-04-24

ISS019-E-010226 (24 April 2009) --- Cosmonaut Gennady Padalka, Expedition 19/20 commander, holds the OBR-1-1/?Fizika-LT? (Letaushaya Tarelka/Flying Disk) educational experiment, also called ?UFO?, in the Zvezda Service Module of the International Space Station. The OBR-1-1 is part of the OBRAZOVANIE (Education) suite of three educational demonstrations of physics in microgravity.

14 CFR 61.315 - What are the privileges and limits of my sport pilot certificate?

Code of Federal Regulations, 2012 CFR

2012-01-01

... sport pilot certificate? 61.315 Section 61.315 Aeronautics and Space FEDERAL AVIATION ADMINISTRATION... INSTRUCTORS Sport Pilots § 61.315 What are the privileges and limits of my sport pilot certificate? (a) If you hold a sport pilot certificate you may act as pilot in command of a light-sport aircraft, except as...

14 CFR 61.315 - What are the privileges and limits of my sport pilot certificate?

Code of Federal Regulations, 2013 CFR

2013-01-01

... sport pilot certificate? 61.315 Section 61.315 Aeronautics and Space FEDERAL AVIATION ADMINISTRATION... INSTRUCTORS Sport Pilots § 61.315 What are the privileges and limits of my sport pilot certificate? (a) If you hold a sport pilot certificate you may act as pilot in command of a light-sport aircraft, except as...

14 CFR 61.315 - What are the privileges and limits of my sport pilot certificate?

Code of Federal Regulations, 2014 CFR

2014-01-01

... sport pilot certificate? 61.315 Section 61.315 Aeronautics and Space FEDERAL AVIATION ADMINISTRATION... INSTRUCTORS Sport Pilots § 61.315 What are the privileges and limits of my sport pilot certificate? (a) If you hold a sport pilot certificate you may act as pilot in command of a light-sport aircraft, except as...

14 CFR 61.64 - Use of a flight simulator and flight training device.

Code of Federal Regulations, 2012 CFR

2012-01-01

... helicopter is not used during the practical test for a type rating in a helicopter (except for preflight... and the applicant must meet one of the following requirements— (1) Hold a type rating in a helicopter... appointed by the U.S. Armed Forces as pilot in command of a helicopter; (3) Have 500 hours of flight time in...

14 CFR 61.315 - What are the privileges and limits of my sport pilot certificate?

Code of Federal Regulations, 2010 CFR

2010-01-01

... sport pilot certificate? 61.315 Section 61.315 Aeronautics and Space FEDERAL AVIATION ADMINISTRATION... INSTRUCTORS Sport Pilots § 61.315 What are the privileges and limits of my sport pilot certificate? (a) If you hold a sport pilot certificate you may act as pilot in command of a light-sport aircraft, except as...

14 CFR 61.315 - What are the privileges and limits of my sport pilot certificate?

Code of Federal Regulations, 2011 CFR

2011-01-01

... sport pilot certificate? 61.315 Section 61.315 Aeronautics and Space FEDERAL AVIATION ADMINISTRATION... INSTRUCTORS Sport Pilots § 61.315 What are the privileges and limits of my sport pilot certificate? (a) If you hold a sport pilot certificate you may act as pilot in command of a light-sport aircraft, except as...

20. Photographic copy of an asconstructed site plan for additions ...

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

20. Photographic copy of an as-constructed site plan for additions to North Base: Job No. A(8-1), Military Construction, Materiel Command Flight Test Base, Muroc, California; Additional Construction, Location Plan, Sheet No. 2, October 1943. Reproduced from the holdings of the National Archives, Pacific Southwest Region - Edwards Air Force Base, North Base, North Base Road, Boron, Kern County, CA

KENNEDY SPACE CENTER, FLA. - The STS-114 crew gathers around the work stand holding the insert for Discovery’s nose cap. From left are Mission Specialists Soichi Noguchi, and Charles Camarda; Commander Eileen Collins; Mission Specialists Andrew Thomas and Wendy Lawrence; Pilot James Kelly; and Mission Specialist Stephen Robinson. Noguchi represents the Japanese Aerospace and Exploration Agency. The insert is being fitted with thermal protection system insulation blankets. The crew is spending time becoming familiar with Shuttle and mission equipment. The mission is Logistics Flight 1, which is scheduled to deliver supplies and equipment plus the external stowage platform to the International Space Station.

NASA Image and Video Library

2004-03-05

KENNEDY SPACE CENTER, FLA. - The STS-114 crew gathers around the work stand holding the insert for Discovery’s nose cap. From left are Mission Specialists Soichi Noguchi, and Charles Camarda; Commander Eileen Collins; Mission Specialists Andrew Thomas and Wendy Lawrence; Pilot James Kelly; and Mission Specialist Stephen Robinson. Noguchi represents the Japanese Aerospace and Exploration Agency. The insert is being fitted with thermal protection system insulation blankets. The crew is spending time becoming familiar with Shuttle and mission equipment. The mission is Logistics Flight 1, which is scheduled to deliver supplies and equipment plus the external stowage platform to the International Space Station.

Obesity: attitudes of undergraduate student nurses and registered nurses.

PubMed

Poon, Man-Yuk; Tarrant, Marie

2009-08-01

To investigate undergraduate student nurses' and registered nurses' attitudes towards obese persons and towards the management of obese patients. Obesity is a global public health problem. Escalating rates of overweight and obesity are also taking a toll in Asian countries that have historically had much lower rates. Despite the growing prevalence of obesity worldwide, studies show that nurses and other health professionals hold negative attitudes towards obese people, which may affect the care of obese patients. Cross-sectional study. A self-administered questionnaire was completed by 352 undergraduate student nurses and 198 registered nurses. The questionnaire consisted of the Fat Phobia Scale, the Attitudes Toward Obese Adult Patients Scale and a demographic profile. Data were analysed using descriptive statistics and student's t-tests. Overall mean scores on the Fat Phobia Scale (3.53 SD 0.47) indicated average levels of fat phobia and mean scores on the Attitudes Toward Obese Adult Patients scale (2.64 SD 0.51) indicated neutral attitudes towards obese patients. Registered nurses had significantly higher levels of fat phobia and more negative attitudes than did student nurses. The majority of participants perceived that obese people liked food, overate, and were shapeless, slow and unattractive. Additionally, over one-half of participants believed that obese adults should be put on a diet while in hospital. Results of this study show that both registered nurses and student nurses have negative perceptions of obesity and are unlikely to attribute positive characteristics to obese individuals. That registered nurses hold more negative attitudes towards obese person is cause for concern. Given the increasing prevalence of obesity and the disproportionate number of obese persons affected by many health conditions, current and future nurses should have positive professional attitudes towards obese individuals. Obesity needs to be more adequately addressed, both in basic nursing education programs and in continuing professional education for practising nurses.

Factors associated with stigma attitude towards people living with HIV among general individuals in Heilongjiang, Northeast China.

PubMed

Li, Xin; Yuan, Lili; Li, Xiaoxia; Shi, Jingli; Jiang, Liying; Zhang, Chundi; Yang, Xiujing; Zhang, Yeli; Zhao, Donghui; Zhao, Yashuang

2017-02-17

HIV-related stigma always is major obstacles to an effective HIV response worldwide. The effect of HIV-related stigma on HIV prevention and treatment is particularly serious in China. This study was to examine stigma attitude towards people living with HIV/AIDS (PLWHA) among general individuals in Heilongjiang Province, Northeast China and the factors associated with stigma attitude, including socio-demographic factors and HIV/AIDS Knowledge. A cross-sectional survey was carried out in Heilongjiang Province, China. A total of 4050 general individuals with age 15-69 years in four villages in rural areas and two communities in urban areas were drawn using stratified cluster sampling. Standardized questionnaire interviews were administered. Univariate and multivariate log-binomial regression were performed to assess factors affecting stigma attitude towards PLWHA. The proportions of participants holding stigma attitude towards PLWHA were 49.6% among rural respondents and 37.0% among urban respondents (P < 0.001). Multivariate log binomial regression analysis among both rural participants (RR = 0.89, 95% CI: 0.87-0.91, P < 0.001) and urban participants (RR = 0.89, 95% CI: 0.87-0.91, P < 0.001) showed that greater knowledge of HIV transmission misconceptions was significantly associated with lower stigma attitude towards people living with HIV. And among urban participants, higher education level (high school vs. primary school or less: RR = 0.73, 95%CI: 0.62-0.87, P < 0.001; middle school vs. primary school or less: RR = 0.83, 95%CI: 0.71-0.97, P = 0.018) were also significantly associated with lower stigma attitude towards PLWHA. The level of stigma attitude towards PLWHA is higher in rural areas than in urban areas in Heilongjiang. Meanwhile, individuals who better were aware of HIV/AIDS transmission misconceptions may hold lower stigma attitude toward PLWHA whether among rural or urban residents.

Impact of a visual programming experience on the attitude toward programming of introductory undergraduate students

NASA Astrophysics Data System (ADS)

Godbole, Saurabh

Traditionally, textual tools have been utilized to teach basic programming languages and paradigms. Research has shown that students tend to be visual learners. Using flowcharts, students can quickly understand the logic of their programs and visualize the flow of commands in the algorithm. Moreover, applying programming to physical systems through the use of a microcontroller to facilitate this type of learning can spark an interest in students to advance their programming knowledge to create novel applications. This study examined if freshmen college students' attitudes towards programming changed after completing a graphical programming lesson. Various attributes about students' attitudes were examined including confidence, interest, stereotypes, and their belief in the usefulness of acquiring programming skills. The study found that there were no statistically significant differences in attitudes either immediately following the session or after a period of four weeks.

Integrated Power and Attitude Control for a Spacecraft with Flywheels and Control Moment Gyroscopes

NASA Technical Reports Server (NTRS)

Roithmayr, Carlos M.; Karlgaard, Christopher D.; Kumar, Renjith R.; Bose, David M.

2003-01-01

A law is designed for simultaneous control of the orientation of an Earth-pointing spacecraft, the energy stored by counter-rotating flywheels, and the angular momentum of the flywheels and control moment gyroscopes used together as all integrated set of actuators for attitude control. General. nonlinear equations of motion are presented in vector-dyadic form, and used to obtain approximate expressions which are then linearized in preparation for design of control laws that include feedback of flywheel kinetic energy error as it means of compensating for damping exerted by rotor bearings. Two flywheel 'steering laws' are developed such that torque commanded by all attitude control law is achieved while energy is stored or discharged at the required rate. Using the International Space Station as an example, numerical simulations are performed to demonstrate control about a torque equilibrium attitude and illustrate the benefits of kinetic energy error feedback.

Surveying Language Attitudes and Practices in Latvia

ERIC Educational Resources Information Center

Priedite, Aija

2005-01-01

As a heritage from the Soviet period (1945-1991) about 500,000-700,000 (mostly Russophone) persons (military persons, workers and others) lived in Latvia with little or no command of Latvian. During the same period, the Russian language had replaced Latvian in the public administration. Following the restitution of independence in 1991, one of the…

Magellan attitude control mission operations

NASA Technical Reports Server (NTRS)

Dukes, Eileen M.

1993-01-01

From the Martin Marietta Astronautics Group base in Denver, Colorado, spacecraft engineers have been operating the Magellan spacecraft for the past three and one half years, along with the Jet Propulsion Laboratory, for NASA. The spacecraft team in Denver is responsible for the health of the vehicle, from command generation to evaluation of engineering telemetry. Operation of the spacecraft's Attitude and Articulation Control Subsystem (AACS) has specifically posed several in-flight challenges. This system must provide accurate pointing of the spacecraft throughout each 3.2 hour orbit which typically consists of 5 - 9 discrete maneuvers. Preparation of bi-weekly command sequences, monitoring execution, and trending of subsystem performance is of paramount importance, but in-flight anomalies have also demanded the attention of AACS engineers. Anomalies are often very interesting and challenging aspects of a project, and the Magellan mission was no exception. From the first unsuccessful attempts to perform a starscan, to spacecraft safing events, much has been experienced to add to the `lessons learned' from this mission. Many of Magellan's in-flight experiences, anomalies, and their resolutions are highlighted in this paper.

Magellan attitude control mission operations

NASA Astrophysics Data System (ADS)

Dukes, Eileen M.

From the Martin Marietta Astronautics Group base in Denver, Colorado, spacecraft engineers have been operating the Magellan spacecraft for the past three and one half years, along with the Jet Propulsion Laboratory, for NASA. The spacecraft team in Denver is responsible for the health of the vehicle, from command generation to evaluation of engineering telemetry. Operation of the spacecraft's Attitude and Articulation Control Subsystem (AACS) has specifically posed several in-flight challenges. This system must provide accurate pointing of the spacecraft throughout each 3.2 hour orbit which typically consists of 5 - 9 discrete maneuvers. Preparation of bi-weekly command sequences, monitoring execution, and trending of subsystem performance is of paramount importance, but in-flight anomalies have also demanded the attention of AACS engineers. Anomalies are often very interesting and challenging aspects of a project, and the Magellan mission was no exception. From the first unsuccessful attempts to perform a starscan, to spacecraft safing events, much has been experienced to add to the `lessons learned' from this mission. Many of Magellan's in-flight experiences, anomalies, and their resolutions are highlighted in this paper.

Attitudes to teaching mathematics: Further development of a measurement instrument

NASA Astrophysics Data System (ADS)

Relich, Joe; Way, Jenni; Martin, Andrew

1994-07-01

The evidence that a relationship exists between attitudes to teaching mathematics and the formation of positive attitudes to mathematics among pupils is somewhat tenuous. Nevertheless, there is a strong belief among pre-service teacher educators that positive attitudes need to be fostered in teacher education students, particularly for prospective primary school teachers. Unfortunately, the research evidence suggests that high proportions of pre-service teachers hold negative attitudes towards mathematics. Although many instruments measuring affect in areas such as self-concept, anxiety, etc. have appeared in the literature over the years, no comprehensive instrument on attitudes is available to help teacher educators monitor attitudinal changes among their pre-service student teachers to the teaching of mathematics. This research re-examines an earlier attempt to develop such an instrument in Australia (Nisbet, 1991) and posits an alternative and refined version.

Beliefs in and About God and Attitudes Toward Voluntary Euthanasia.

PubMed

Sharp, Shane

2018-06-01

I use data from the General Social Survey to evaluate several hypotheses regarding how beliefs in and about God predict attitudes toward voluntary euthanasia. I find that certainty in the belief in God significantly predicts negative attitudes toward voluntary euthanasia. I also find that belief in a caring God and in a God that is the primary source of moral rules significantly predicts negative attitudes toward voluntary euthanasia. I also find that respondents' beliefs about the how close they are to God and how close they want to be with God predict negative attitudes toward voluntary euthanasia. These associations hold even after controlling for religious affiliation, religious attendance, views of the Bible, and sociodemographic factors. The findings indicate that to understand individuals' attitudes about voluntary euthanasia, one must pay attention to their beliefs in and about God.

A software toolbox for robotics

NASA Technical Reports Server (NTRS)

Sanwal, J. C.

1985-01-01

A method for programming cooperating manipulators, which is guided by a geometric description of the task to be performed, is given. For this a suitable language must be used and a method for describing the workplace and the objects in it in geometric terms. A task level command language and its implementation for concurrently driven multiple robot arm is described. The language is suitable for driving a cell in which manipulators, end effectors, and sensors are controlled by their own dedicated processors. These processors can communicate with each other through a communication network. A mechanism for keeping track of the history of the commands already executed allows the command language for the manipulators to be event driven. A frame based world modeling system is utilized to describe the objects in the work environment and any relationships that hold between these objects. This system provides a versatile tool for managing information about the world model. Default actions normally needed are invoked when the data base is updated or accessed. Most of the first level error recovery is also invoked by the database by utilizing the concepts of demons. The package can be utilized to generate task level commands in a problem solver or a planner.

Touchless attitude correction for satellite with constant magnetic moment

NASA Astrophysics Data System (ADS)

Ao, Hou-jun; Yang, Le-ping; Zhu, Yan-wei; Zhang, Yuan-wen; Huang, Huan

2017-09-01

Rescue of satellite with attitude fault is of great value. Satellite with improper injection attitude may lose contact with ground as the antenna points to the wrong direction, or encounter energy problems as solar arrays are not facing the sun. Improper uploaded command may set the attitude out of control, exemplified by Japanese Hitomi spacecraft. In engineering practice, traditional physical contact approaches have been applied, yet with a potential risk of collision and a lack of versatility since the mechanical systems are mission-specific. This paper puts forward a touchless attitude correction approach, in which three satellites are considered, one having constant dipole and two having magnetic coils to control attitude of the first. Particular correction configurations are designed and analyzed to maintain the target's orbit during the attitude correction process. A reference coordinate system is introduced to simplify the control process and avoid the singular value problem of Euler angles. Based on the spherical triangle basic relations, the accurate varying geomagnetic field is considered in the attitude dynamic mode. Sliding mode control method is utilized to design the correction law. Finally, numerical simulation is conducted to verify the theoretical derivation. It can be safely concluded that the no-contact attitude correction approach for the satellite with uniaxial constant magnetic moment is feasible and potentially applicable to on-orbit operations.

A cross-sectional study to assess the patient safety culture in the Palestinian hospitals: a baseline assessment for quality improvement.

PubMed

Elsous, Aymen; Akbari Sari, Ali; Rashidian, Arash; Aljeesh, Yousef; Radwan, Mahmoud; AbuZaydeh, Hatem

2016-12-01

To measure and establish a baseline assessment of the patient safety culture in the Palestinian hospitals. A cross-sectional descriptive study using the Arabic version of the Safety Attitude Questionnaire (Short Form 2006). A total of 339 nurses and physicians returned the questionnaire out of 370 achieving a response rate of 91.6%. Four public general hospitals in the Gaza Strip, Palestine. Nurses and physicians were randomly selected using a proportionate random sampling. Data analysis performed using Statistical Package for the Social Sciences software version 20, and p value less than 0.05 was statistically significant. Current status of patient safety culture among healthcare providers and percentage of positive attitudes. Male to female ratio was 2.16:1, and mean age was 36.5 ± 9.4 years. The mean score of Arabic Safety Attitude Questionnaire across the six dimensions on 100-point scale ranged between 68.5 for Job Satisfaction and 48.5 for Working Condition. The percentage of respondents holding a positive attitude was 34.5% for Teamwork Climate, 28.4% for Safety Climate, 40.7% for Stress Recognition, 48.8% for Job Satisfaction, 11.3% for Working Conditions and 42.8% for Perception of Management. Healthcare workers holding positive attitudes had better collaboration with co-workers than those without positive attitudes. Findings are useful to formulate a policy on patient safety culture and targeted a specific safety culture dimension to improve the safety of patients and improve the clinical outcomes within healthcare organisations.

STS-94 Commander Halsell in LC-39A White Room

NASA Technical Reports Server (NTRS)

1997-01-01

STS-94 Mission Commander James D. Halsell, Jr., prepares to enter the Space Shuttle Columbia at Launch Pad 39A in preparation for launch. Halsell is on his fourth space flight, having served as commander of STS-83 and pilot of both STS-74 and STS-65. He is a lieutenant colonel in the Air Force and a former SR-71 Blackbird test pilot and holds masters degrees in management and space operations. Halsell will have responsibility for the success of the mission and will operate and maintain Columbia during the Red, or second shift. He will also assist with a materials science experiment and a protein crystal growth payload during the 16-day mission. Halsell and six fellow crew members will lift off during a launch window that opens at 1:50 a.m. EDT, July 1. The launch window will open 47 minutes early to improve the opportunity to lift off before Florida summer rain showers reach the space center.

Mission management, planning, and cost: PULSE Attitude And Control Systems (AACS)

NASA Technical Reports Server (NTRS)

1990-01-01

The Pluto unmanned long-range scientific explorer (PULSE) is a probe that will do a flyby of Pluto. It is a low weight, relatively low costing vehicle which utilizes mostly off-the-shelf hardware, but not materials or techniques that will be available after 1999. A design, fabrication, and cost analysis is presented. PULSE will be launched within the first decade of the twenty-first century. The topics include: (1) scientific instrumentation; (2) mission management, planning, and costing; (3) power and propulsion systems; (4) structural subsystem; (5) command, control, and communication; and (6) attitude and articulation control.

The Relationship between Class Attitudes towards Peers with a Disability and Peer Acceptance, Friendships and Peer Interactions of Students with a Disability in Regular Secondary Schools

ERIC Educational Resources Information Center

Petry, Katja

2018-01-01

Students with a disability in inclusive classes often face problems with peer acceptance, friendships and peer interactions. In this paper, the relationship between these difficulties in social participation and the attitudes that typically developing adolescents hold towards peers with a disability at the level of the class was explored. A…

Influence of Religion on Attitude Towards Suicide: An Indian Perspective.

PubMed

Thimmaiah, Rohini; Poreddi, Vijayalakshmi; Ramu, Rajalakshmi; Selvi, Sugavana; Math, Suresh Bada

2016-12-01

This cross-sectional survey was aimed to compare attitudes towards suicide and suicidal behaviour among randomly selected sample (N = 172) belonged to Hindu and Muslim religions. Data were collected through face-to-face interview. Hindus differed from Muslims regarding suicidal attempts among family (χ (2) = 12.356, p < .002) and community members (χ (2) = 20.425, p < .000). Our study also showed that suicidal behaviours were comparatively low among Muslim participants than Hindus. Further, Muslims hold more negative attitudes towards suicide than Hindus. An enhanced understanding of attitudes towards suicide among general population may be crucial to plan educational, intervention and prevention programs.

STS-42 OV-103 crew poses for onboard (in-space) portrait in IML-1 SL module

NASA Image and Video Library

1992-01-30

STS042-78-061 (22-30 Jan. 1992) --- The seven STS-42 crewmembers pose for a traditional in-space portrait in the shirt-sleeve environment of the International Microgravity Laboratory (IML-1) science module in the shuttle's cargo bay. (Hold picture with index numbers at top.) David C. Hilmers, mission specialist, is at top center of the 70mm image. Others pictured are (clockwise) Ronald J. Grabe, mission commander; William F. Readdy; mission specialist; Ulf Merbold, European Space Agency (ESA) payload specialist; Norman E. Thagard, payload commander; Stephen S. Oswald, pilot; and Roberta L. Bondar, Canadian payload specialist. The rotating chair, used often in biomedical tests on the eight-day flight, is (partially obscured) in center frame.

Launch of the Apollo 17 lunar landing mission

NASA Image and Video Library

1972-12-07

S72-55482 (7 Dec. 1972) --- The huge, 363-feet tall Apollo 17 (Spacecraft 114/Lunar Module 12/Saturn 512) space vehicle is launched from Pad A., Launch Complex 39, Kennedy Space Center (KSC), Florida, at 12:33 a.m. (EST), Dec. 7, 1972. Apollo 17, the final lunar landing mission in NASA's Apollo program, was the first nighttime liftoff of the Saturn V launch vehicle. Aboard the Apollo 17 spacecraft were astronaut Eugene A. Cernan, commander; astronaut Ronald E. Evans, command module pilot; and scientist-astronaut Harrison H. Schmitt, lunar module pilot. Flame from the five F-1 engines of the Apollo/Saturn first (S-1C) stage illuminates the nighttime scene. A two-hour and 40-minute hold delayed the Apollo 17 launching.

Launch of the Apollo 17 lunar landing mission

NASA Image and Video Library

1972-09-07

S72-55070 (7 Dec. 1972) --- The huge, 363-feet tall Apollo 17 (Spacecraft 114/Lunar Module 12/Saturn 512) space vehicle is launched from Pad A, Launch Complex 39, Kennedy Space Center (KSC), Florida, at 12:33 a.m. (EST), Dec. 7, 1972. Apollo 17, the final lunar landing mission in NASA's Apollo program, was the first nighttime liftoff of the Saturn V launch vehicle. Aboard the Apollo 17 spacecraft were astronaut Eugene A. Cernan, commander; astronaut Ronald E. Evans, command module pilot; and scientist-astronaut Harrison H. Schmitt, lunar module pilot. Flame from the five F-1 engines of the Apollo/Saturn first (S-1C) stage illuminates the nighttime scene. A two-hour and 40-minute hold delayed the Apollo 17 launching.

Optimal attitude maneuver execution for the Advanced Composition Explorer (ACE) mission

NASA Technical Reports Server (NTRS)

Woodard, Mark A.; Baker, David

1995-01-01

The Advanced Composition Explorer (ACE) spacecraft will require frequent attitude reorientations in order to maintain the spacecraft high gain antenna (HGA) within 3 deg of earth-pointing. These attitude maneuvers will be accomplished by employing a series of ground-commanded thruster pulses, computed by ground operations personnel, to achieve the desired change in the spacecraft angular momentum vector. With each maneuver, attitude nutation will be excited. Large nutation angles are undesirable from a science standpoint. It is important that the thruster firings be phased properly in order to minimize the nutation angle at the end of the maneuver so that science collection time is maximized. The analysis presented derives a simple approximation for the nutation contribution resulting from a series of short thruster burns. Analytic equations are derived which give the induced nutation angle as a function of the number of small thruster burns used to execute the attitude maneuver and the phasing of the burns. The results show that by properly subdividing the attitude burns, the induced nutation can be kept low. The analytic equations are also verified through attitude dynamics simulation and simulation results are presented. Finally, techniques for quantifying the post-maneuver nutation are discussed.

Skylab 4 crewmen passing trash bags in to the OWS waste disposal tank

NASA Technical Reports Server (NTRS)

1974-01-01

Two Skylab 4 crewmen are seen passing trash bags through the trash airlock of the Orbital Workshop (OWS) of the Skylab space station in Earth orbit. The trash airlock leads to the OWS waste disposal tank. Astronaut William R. Pogue, Skylab 4 pilot, holds onto the OWS crew quarters ceiling as he prepares to jump onto the OWS airlock hatch cover to force another trash bag further down into the airlock. Astronaut Gerald P. Carr, Skylab 4 commander, is assisting. Carr is holding onto the trash bags. A third trash bag is floating in the zero-gravity environment near Pogue's right leg. The wardroom can be seen behind Pogue.

A Within-Group Analysis of African American Mothers’ Authoritarian Attitudes, Limit-Setting and Children's Self-Regulation

PubMed Central

LeCuyer, Elizabeth A.; Swanson, Dena Phillips

2016-01-01

Research suggests that higher levels of authoritarian parenting exist in African American (AA) families than in European American (EA) families, and that authoritarian attitudes may be associated with more positive outcomes in AA families than EA families. However, less is known about authoritarian attitudes and children's development within AA families. This within-group study of 50 African American mothers and their 3-year-old children examined associations between maternal authoritarian attitudes, observed maternal limit-setting strategies, and children's self-regulation during a limit-setting interaction. The findings indicate that while AA families may hold more authoritarian attitudes than EA families, the direction of effect of authoritarian attitudes on children's outcomes appears to be the same in both ethnic groups. In this sample, when examining AA authoritarian attitudes relative to those of other AA mothers, less or lower authoritarian attitudes were associated with authoritative limit-setting behavior (firm limits within the context of overall warmth and responsiveness) and better children's self-regulation. PMID:28408794

A Within-Group Analysis of African American Mothers' Authoritarian Attitudes, Limit-Setting and Children's Self-Regulation.

PubMed

LeCuyer, Elizabeth A; Swanson, Dena Phillips

2017-03-01

Research suggests that higher levels of authoritarian parenting exist in African American (AA) families than in European American (EA) families, and that authoritarian attitudes may be associated with more positive outcomes in AA families than EA families. However, less is known about authoritarian attitudes and children's development within AA families. This within-group study of 50 African American mothers and their 3-year-old children examined associations between maternal authoritarian attitudes, observed maternal limit-setting strategies, and children's self-regulation during a limit-setting interaction. The findings indicate that while AA families may hold more authoritarian attitudes than EA families, the direction of effect of authoritarian attitudes on children's outcomes appears to be the same in both ethnic groups. In this sample, when examining AA authoritarian attitudes relative to those of other AA mothers, less or lower authoritarian attitudes were associated with authoritative limit-setting behavior (firm limits within the context of overall warmth and responsiveness) and better children's self-regulation.

Attributions and Attitudes of Mothers and Fathers in Jordan.

PubMed

Al-Hassan, Suha; Takash, Hanan

2011-07-01

OBJECTIVE: The present study examined mean level similarities and differences as well as correlations between mothers' and fathers' attributions regarding successes and failures in caregiving situations and progressive versus authoritarian attitudes in Jordan. DESIGN: Interviews were conducted with both mothers and fathers in 112 families. RESULTS: There were no significant main effects of gender on any of the constructs of interest. Mothers and fathers reported similar levels of attributions regarding uncontrollable success, adult-controlled failure, and child-controlled failure in the same family. Regarding attitudes, mothers and fathers reported greater progressive attitudes than authoritarian attitudes. Large, significant correlations were found for concordance between parents in the same family on all seven attributions and attitudes examined; all remained significant after controlling for parents' age, education, and possible social desirability bias. Significant positive correlations were found for mothers' and fathers' attributions regarding uncontrollable success, adult-controlled failure, child-controlled failure, perceived control over failure, progressive attitudes, authoritarian attitudes, and modernity of attitudes. CONCLUSIONS: This study concluded that in Jordan mothers and fathers hold similar levels of attributions and attitudes.

Expedition 28 Docking

NASA Image and Video Library

2011-06-10

Top officials from the Russian Federal Space Agency and NASA hold a Soyuz post-docking press conference at the Russian Mission Control Center in Korolev, Russia on Friday, June 10, 2011. The Soyuz TMA-02M docked to the International Space Station carrying Expedition 28 Soyuz Commander Sergei Volkov, NASA Flight Engineer Mike Fossum and JAXA (Japanase Aerospace Exploration Agency) Flight Engineer Satoshi Furukawa. Photo Credit: (NASA/Carla Cioffi)

Hair cuttime on ISS

NASA Image and Video Library

2015-03-22

Caption: ISS043E044174 (03/22/2015) --- Its haircut time onboard the International Space Station as Expedition 43 Commander and NASA astronaut Terry Virts handles the scissors while ESA (European Space Agency) astronaut Samantha Cristoforetti holds the vacuum to immediately pull the fine hair strands into the safe container so they don't float away into the station. Hair trims are a regular occurrence during an astronaut's six month tour.

Expedition 23 State Commission

NASA Image and Video Library

2010-03-31

Expedition 23 Soyuz Commander Alexander Skvortsov, center, holds up a poster of the Expedition 23 crew while Flight Engineer Tracy Caldwell Dyson and Flight Engineer Mikhail Kornienko, right, smile during the State Commission meeting held at the Cosmonaut Hotel, Thursday, April 1, 2010 in Baikonur, Kazakhstan. The State Commission meeting approves the Soyuz launch of Caldwell Dyson, Skvortsov and Kornienko to the International Space Station. Photo Credit: (NASA/Bill Ingalls)

STS-26 crewmembers participate in bench review at offsite Boeing Bldg

NASA Technical Reports Server (NTRS)

1988-01-01

STS-26 Discovery, Orbiter Vehicle (OV) 103, crewmembers participate in bench review at the offsite Boeing Building. Left to right Mission Specialist (MS) David C. Hilmers, MS George D. Nelson, Commander Frederick H. Hauck, and Pilot Richard O. Covey, holding clipboards with checklists, look over hygiene supplies (razors, deodorants, tooth paste, etc.). Photograph was taken by Keith Meyers of the NEW YORK TIMES.

Changes in women's fear of success and fear of appearing incompetent in business.

PubMed

Tomkiewicz, J; Bass, K

1999-12-01

The primary purpose of this research was to examine whether fear of success and of appearing incompetent among women have changed recently. Another purpose was to examine whether such fears differed among women who hold Traditional views and those who hold Progressive views about the roles of women in the workplace. The Fear of Success Scale, the Fear of Appearing Incompetent Scale, and the Attitude Toward Women Scale were completed by 61 male and 52 female graduating seniors. Significant differences were found between the groups for scores on the Attitude Toward Women Scale, but none between the sexes for scores on the Fear of Success Scale or the Fear of Appearing Incompetent Scale. Significant differences were found, however, on the latter two scales when women were separated into Traditional and Progressive groups.

Disclosure of cancer diagnosis and prognosis: a survey of the general public's attitudes toward doctors and family holding discretionary powers

PubMed Central

Miyata, Hiroaki; Tachimori, Hisateru; Takahashi, Miyako; Saito, Tami; Kai, Ichiro

2004-01-01

Background This study aimed to ask a sample of the general population about their preferences regarding doctors holding discretionary powers in relation to disclosing cancer diagnosis and prognosis. Methods The researchers mailed 443 questionnaires to registered voters in a ward of Tokyo which had a socio-demographic profile similar to greater Tokyo's average and received 246 responses (response rate 55.5%). We describe and analysed respondents' attitudes toward doctors and family members holding discretionary powers in relation to cancer diagnoses disclose. Results Amongst respondents who wanted full disclosure about the diagnosis without delay, 117 (69.6 %) respondents agreed to follow the doctor's discretion, whilst 111 (66.1 %) respondents agreed to follow the family member's decision. For respondents who preferred to have the diagnosis and prognosis withheld, 59 (26.5 %) agreed to follow the doctor's decision, and 79 (35.3 %) of respondents agreed with following family member's wishes. Conclusions The greater proportion of respondents wants or permits disclosure of cancer diagnosis and prognosis. In patients who reveal negative attitudes toward being given a cancer disclosure directly, alternative options exist such as telling the family ahead of the patient or having a discussion of the cancer diagnosis with the patient together with the family. It is recommended that health professionals become more aware about the need to provide patients with their cancer diagnosis and prognosis in a variety of ways. PMID:15571636

The effects of Crew Resource Management (CRM) training in airline maintenance: Results following three year's experience

NASA Technical Reports Server (NTRS)

Taylor, J. C.; Robertson, M. M.

1995-01-01

An airline maintenance department undertook a CRM training program to change its safety and operating culture. In 2 1/2 years this airline trained 2200 management staff and salaried professionals. Participants completed attitude surveys immediately before and after the training, as well as two months, six months, and one year afterward. On-site interviews were conducted to test and confirm the survey results. Comparing managers' attitudes immediately after their training with their pretraining attitudes showed significant improvement for three attitudes. A fourth attitude, assertiveness, improved significantly above the pretraining levels two months after training. The expected effect of the training on all four attitude scales did not change significantly thereafter. Participants' self-reported behaviors and interview comments confirmed their shift from passive to more active behaviors over time. Safety, efficiency, and dependability performance were measured before the onset of the training and for some 30 months afterward. Associations with subsequent performance were strongest with positive attitudes about sharing command (participation), assertiveness, and stress management when those attitudes were measured 2 and 12 months after the training. The two month follow-up survey results were especially strong and indicate that active behaviors learned from the CRM training consolidate and strengthen in the months immediately following training.

GOES-R active vibration damping controller design, implementation, and on-orbit performance

NASA Astrophysics Data System (ADS)

Clapp, Brian R.; Weigl, Harald J.; Goodzeit, Neil E.; Carter, Delano R.; Rood, Timothy J.

2018-01-01

GOES-R series spacecraft feature a number of flexible appendages with modal frequencies below 3.0 Hz which, if excited by spacecraft disturbances, can be sources of undesirable jitter perturbing spacecraft pointing. To meet GOES-R pointing stability requirements, the spacecraft flight software implements an Active Vibration Damping (AVD) rate control law which acts in parallel with the nadir point attitude control law. The AVD controller commands spacecraft reaction wheel actuators based upon Inertial Measurement Unit (IMU) inputs to provide additional damping for spacecraft structural modes below 3.0 Hz which vary with solar wing angle. A GOES-R spacecraft dynamics and attitude control system identified model is constructed from pseudo-random reaction wheel torque commands and IMU angular rate response measurements occurring over a single orbit during spacecraft post-deployment activities. The identified Fourier model is computed on the ground, uplinked to the spacecraft flight computer, and the AVD controller filter coefficients are periodically computed on-board from the Fourier model. Consequently, the AVD controller formulation is based not upon pre-launch simulation model estimates but upon on-orbit nadir point attitude control and time-varying spacecraft dynamics. GOES-R high-fidelity time domain simulation results herein demonstrate the accuracy of the AVD identified Fourier model relative to the pre-launch spacecraft dynamics and control truth model. The AVD controller on-board the GOES-16 spacecraft achieves more than a ten-fold increase in structural mode damping for the fundamental solar wing mode while maintaining controller stability margins and ensuring that the nadir point attitude control bandwidth does not fall below 0.02 Hz. On-orbit GOES-16 spacecraft appendage modal frequencies and damping ratios are quantified based upon the AVD system identification, and the increase in modal damping provided by the AVD controller for each structural mode is presented. The GOES-16 spacecraft AVD controller frequency domain stability margins and nadir point attitude control bandwidth are presented along with on-orbit time domain disturbance response performance.

GOES-R Active Vibration Damping Controller Design, Implementation, and On-Orbit Performance

NASA Technical Reports Server (NTRS)

Clapp, Brian R.; Weigl, Harald J.; Goodzeit, Neil E.; Carter, Delano R.; Rood, Timothy J.

2017-01-01

GOES-R series spacecraft feature a number of flexible appendages with modal frequencies below 3.0 Hz which, if excited by spacecraft disturbances, can be sources of undesirable jitter perturbing spacecraft pointing. In order to meet GOES-R pointing stability requirements, the spacecraft flight software implements an Active Vibration Damping (AVD) rate control law which acts in parallel with the nadir point attitude control law. The AVD controller commands spacecraft reaction wheel actuators based upon Inertial Measurement Unit (IMU) inputs to provide additional damping for spacecraft structural modes below 3.0 Hz which vary with solar wing angle. A GOES-R spacecraft dynamics and attitude control system identified model is constructed from pseudo-random reaction wheel torque commands and IMU angular rate response measurements occurring over a single orbit during spacecraft post-deployment activities. The identified Fourier model is computed on the ground, uplinked to the spacecraft flight computer, and the AVD controller filter coefficients are periodically computed on-board from the Fourier model. Consequently, the AVD controller formulation is based not upon pre-launch simulation model estimates but upon on-orbit nadir point attitude control and time-varying spacecraft dynamics. GOES-R high-fidelity time domain simulation results herein demonstrate the accuracy of the AVD identified Fourier model relative to the pre-launch spacecraft dynamics and control truth model. The AVD controller on-board the GOES-16 spacecraft achieves more than a ten-fold increase in structural mode damping of the fundamental solar wing mode while maintaining controller stability margins and ensuring that the nadir point attitude control bandwidth does not fall below 0.02 Hz. On-orbit GOES-16 spacecraft appendage modal frequencies and damping ratios are quantified based upon the AVD system identification, and the increase in modal damping provided by the AVD controller for each structural mode is presented. The GOES-16 spacecraft AVD controller frequency domain stability margins and nadir point attitude control bandwidth are presented along with on-orbit time domain disturbance response performance.

A manned maneuvering unit proximity operations planning and flight guidance display and control system

NASA Technical Reports Server (NTRS)

Gershzohn, Gary R.; Sirko, Robert J.; Zimmerman, K.; Jones, A. D.

1990-01-01

This task concerns the design, development, testing, and evaluation of a new proximity operations planning and flight guidance display and control system for manned space operations. A forecast, derivative manned maneuvering unit (MMU) was identified as a candidate for the application of a color, highway-in-the-sky display format for the presentation of flight guidance information. A silicon graphics 4D/20-based simulation is being developed to design and test display formats and operations concepts. The simulation includes the following: (1) real-time color graphics generation to provide realistic, dynamic flight guidance displays and control characteristics; (2) real-time graphics generation of spacecraft trajectories; (3) MMU flight dynamics and control characteristics; (4) control algorithms for rotational and translational hand controllers; (5) orbital mechanics effects for rendezvous and chase spacecraft; (6) inclusion of appropriate navigation aids; and (7) measurement of subject performance. The flight planning system under development provides for: (1) selection of appropriate operational modes, including minimum cost, optimum cost, minimum time, and specified ETA; (2) automatic calculation of rendezvous trajectories, en route times, and fuel requirements; (3) and provisions for manual override. Man/machine function allocations in planning and en route flight segments are being evaluated. Planning and en route data are presented on one screen composed of two windows: (1) a map display presenting a view perpendicular to the orbital plane, depicting flight planning trajectory and time data attitude display presenting attitude and course data for use en route; and (2) an attitude display presenting local vertical-local horizontal attitude data superimposed on a highway-in-the-sky or flight channel representation of the flight planned course. Both display formats are presented while the MMU is en route. In addition to these displays, several original display elements are being developed, including a 3DOF flight detector for attitude commanding, a different flight detector for translation commands, and a pictorial representation of velocity deviations.

Evolution of International Space Station GN&C System Across ISS Assembly Stages

NASA Technical Reports Server (NTRS)

Lee, Roscoe; Frank, K. D. (Technical Monitor)

1999-01-01

The Guidance Navigation and Control (GN&C) system for the International Space Station is initially implemented by the Functional Cargo Block (FGB) which was built by the Khrunichev Space Center under direct contract to Boeing. This element (Stage 1A/R) was launched on 20 November 1998 and is currently operating on-orbit. The components and capabilities of the FGB Motion Control System (MCS) are described. The next ISS element, which has GN&C functionality will be the Service Module (SM) built by Rocket Space Corporation-Energia. This module is scheduled for launch (Stage 1R) in early 2000. Following activation of the SM GN&C system, the FGB MCS is deactivated and no longer used. The components and capabilities of the SM GN&C system are described. When a Progress vehicle is attached to the ISS it can be used for reboost operations, based on commands provided by the Mission Control Center-Moscow. When a data connection is implemented between the SM and the Progress, the SM can command the Progress thrusters for attitude control and reboosts. On Stage 5A, the U.S. GN&C system will become activated when the U.S. Laboratory is de loyed and installed (launch schedule is currently TBD). The U.S. GN&C system provides non-propulsive control capabilities to support micro-gravity operations and minimize the use of propellant for attitude control, and an independent capability for determining the ISS state vector, attitude, attitude rate. and time.. The components and capabilities of the U.S. GN&C system are described and the interactions between the U.S. and Russian Segment GN&C systems are also described.

Digital controllers for VTOL aircraft

NASA Technical Reports Server (NTRS)

Stengel, R. F.; Broussard, J. R.; Berry, P. W.

1976-01-01

Using linear-optimal estimation and control techniques, digital-adaptive control laws have been designed for a tandem-rotor helicopter which is equipped for fully automatic flight in terminal area operations. Two distinct discrete-time control laws are designed to interface with velocity-command and attitude-command guidance logic, and each incorporates proportional-integral compensation for non-zero-set-point regulation, as well as reduced-order Kalman filters for sensor blending and noise rejection. Adaptation to flight condition is achieved with a novel gain-scheduling method based on correlation and regression analysis. The linear-optimal design approach is found to be a valuable tool in the development of practical multivariable control laws for vehicles which evidence significant coupling and insufficient natural stability.

The MGS Avionics System Architecture: Exploring the Limits of Inheritance

NASA Technical Reports Server (NTRS)

Bunker, R.

1994-01-01

Mars Global Surveyor (MGS) avionics system architecture comprises much of the electronics on board the spacecraft: electrical power, attitude and articulation control, command and data handling, telecommunications, and flight software. Schedule and cost constraints dictated a mix of new and inherited designs, especially hardware upgrades based on findings of the Mars Observer failure review boards.

Formative Evaluation of an Experimental BE/E [Basic Electricity and Electronics] Program. Report No. 9-75.

ERIC Educational Resources Information Center

Fishburne, R. P., Jr.; Mims, Diane M.

An experimental Basic Electricity and Electronics course (BE/E) utilizing a lock-step, instructor presentation methodology was developed and evaluated at the Service School Command, Great Lakes. The study, directed toward the training of lower mental group, school nonqualified personnel, investigated comparative data on test performance, attitude,…

The Design of an Adaptive Attitude Control System

DTIC Science & Technology

1992-09-01

spacecraft to reorient itself by rotating about the eigenaxis will be executing an optimal maneuver . [Ref. 9: pp. 375-3761 2. Quaternion Feedback Regulator...34% The below program will simulate the CER Control System for Large "% Angle (Slewing) Motion. The Control Law is a Quaternion Feedback "% Regulator...Equipment/Retriever (CER) during autonomous attitude hold and large angle or slewing maneuvers . The CER is a proposed space robot that deploys from

The Role of Virtual Learning Environment in Improving Information and Communication Technology Adoption in Teaching Exploring How Virtual Learning Environments Improve University Teacher's Attitudes about the Use of Information and Communication Technology

ERIC Educational Resources Information Center

Ageel, Mohammed

2012-01-01

The adoption of ICT-enabled teaching in contemporary schools has largely lagged behind despite its obvious and many benefits, mainly because teachers still hold ignorant, misinformed and highly negative attitudes towards ICT-enabled teaching. This article aimed at investigating the effect of Virtual Learning Environments (VLE) on university…

The role of religion in death attitudes: distinguishing between religious belief and style of processing religious contents.

PubMed

Dezutter, Jessie; Soenens, Bart; Luyckx, Koen; Bruyneel, Sabrina; Vansteenkiste, Maarten; Duriez, Bart; Hutsebaut, Dirk

2009-01-01

Although it is widely assumed that religiosity plays an important role in individuals' attitudes about death, research to date has failed to reveal consistent associations between religiosity and death attitudes. Drawing from D. M. Wulff's (1991) multidimensional model of religiosity, the authors examined associations between religious attitudes as measured by the Post-Critical Belief Scale and death attitudes as assessed by the Death Attitude Profile--Revised. In total, 471 Dutch-speaking Belgian adults completed both questionnaires. Hierarchical multiple regression analyses were used to asses the unique contribution of the religious attitudes in the prediction of the death attitudes. First, results show that religious people are more likely to endorse an approach acceptance attitude toward death, indicating that religiosity as such is related to belief in an afterlife. Second, people holding a literal attitude toward religion report more death anxiety, indicating that the processing of religious contents is related to defensiveness toward death. Finally, the specific combination of the two dimensions seems important in the prediction of a neutral acceptance attitude. The relevance of our findings for future research on religiosity and death attitudes is discussed.

Examining Implicit Attitudes towards Exercisers with a Physical Disability

PubMed Central

Dionne, Cassandra D.; Gainforth, Heather L.; O'Malley, Deborah A.; Latimer-Cheung, Amy E.

2013-01-01

Background. Using measures of explicit attitudes, physical activity status has been established as a factor that reduces the stigma able-bodied people hold towards people with physical disabilities. This phenomenon is called the exerciser stereotype. However, whether the exerciser stereotype exists when using measures of implicit attitudes remains unknown. Objective. The aims of this study were to evaluate the prevalence of negative implicit attitudes towards people with physical disabilities and determine whether implicit attitudes towards people with physical disabilities were influenced by the exerciser stereotype. Methods. One hundred able-bodied participants (82 females, 18 males) completed two implicit association tests (IATs): the Disability-Attitudes IAT and the Disability-Activity IAT. The Disability-Attitudes IAT measured implicit attitudes towards people who were not disabled relative to disabled; the Disability-Activity IAT measured attitudes towards people with a physical disability who were active relative to inactive. Results. Results revealed that 83.8% of participants had negative implicit attitudes towards people with a disability. Participants held more positive attitudes towards active versus inactive people with a physical disability. Conclusions. The study findings indicate that the exerciser stereotype exists implicitly and may undermine negative attitudes towards people with physical disabilities. PMID:23710142

Orion MPCV GN and C End-to-End Phasing Tests

NASA Technical Reports Server (NTRS)

Neumann, Brian C.

2013-01-01

End-to-end integration tests are critical risk reduction efforts for any complex vehicle. Phasing tests are an end-to-end integrated test that validates system directional phasing (polarity) from sensor measurement through software algorithms to end effector response. Phasing tests are typically performed on a fully integrated and assembled flight vehicle where sensors are stimulated by moving the vehicle and the effectors are observed for proper polarity. Orion Multi-Purpose Crew Vehicle (MPCV) Pad Abort 1 (PA-1) Phasing Test was conducted from inertial measurement to Launch Abort System (LAS). Orion Exploration Flight Test 1 (EFT-1) has two end-to-end phasing tests planned. The first test from inertial measurement to Crew Module (CM) reaction control system thrusters uses navigation and flight control system software algorithms to process commands. The second test from inertial measurement to CM S-Band Phased Array Antenna (PAA) uses navigation and communication system software algorithms to process commands. Future Orion flights include Ascent Abort Flight Test 2 (AA-2) and Exploration Mission 1 (EM-1). These flights will include additional or updated sensors, software algorithms and effectors. This paper will explore the implementation of end-to-end phasing tests on a flight vehicle which has many constraints, trade-offs and compromises. Orion PA-1 Phasing Test was conducted at White Sands Missile Range (WSMR) from March 4-6, 2010. This test decreased the risk of mission failure by demonstrating proper flight control system polarity. Demonstration was achieved by stimulating the primary navigation sensor, processing sensor data to commands and viewing propulsion response. PA-1 primary navigation sensor was a Space Integrated Inertial Navigation System (INS) and Global Positioning System (GPS) (SIGI) which has onboard processing, INS (3 accelerometers and 3 rate gyros) and no GPS receiver. SIGI data was processed by GN&C software into thrust magnitude and direction commands. The processing changes through three phases of powered flight: pitchover, downrange and reorientation. The primary inputs to GN&C are attitude position, attitude rates, angle of attack (AOA) and angle of sideslip (AOS). Pitch and yaw attitude and attitude rate responses were verified by using a flight spare SIGI mounted to a 2-axis rate table. AOA and AOS responses were verified by using a data recorded from SIGI movements on a robotic arm located at NASA Johnson Space Center. The data was consolidated and used in an open-loop data input to the SIGI. Propulsion was the Launch Abort System (LAS) Attitude Control Motor (ACM) which consisted of a solid motor with 8 nozzles. Each nozzle has active thrust control by varying throat area with a pintle. LAS ACM pintles are observable through optically transparent nozzle covers. SIGI movements on robot arm, SIGI rate table movements and LAS ACM pintle responses were video recorded as test artifacts for analysis and evaluation. The PA-1 Phasing Test design was determined based on test performance requirements, operational restrictions and EGSE capabilities. This development progressed during different stages. For convenience these development stages are initial, working group, tiger team, Engineering Review Team (ERT) and final.

PMD2HD--a web tool aligning a PubMed search results page with the local German Cancer Research Centre library collection.

PubMed

Bohne-Lang, Andreas; Lang, Elke; Taube, Anke

2005-06-27

Web-based searching is the accepted contemporary mode of retrieving relevant literature, and retrieving as many full text articles as possible is a typical prerequisite for research success. In most cases only a proportion of references will be directly accessible as digital reprints through displayed links. A large number of references, however, have to be verified in library catalogues and, depending on their availability, are accessible as print holdings or by interlibrary loan request. The problem of verifying local print holdings from an initial retrieval set of citations can be solved using Z39.50, an ANSI protocol for interactively querying library information systems. Numerous systems include Z39.50 interfaces and therefore can process Z39.50 interactive requests. However, the programmed query interaction command structure is non-intuitive and inaccessible to the average biomedical researcher. For the typical user, it is necessary to implement the protocol within a tool that hides and handles Z39.50 syntax, presenting a comfortable user interface. PMD2HD is a web tool implementing Z39.50 to provide an appropriately functional and usable interface to integrate into the typical workflow that follows an initial PubMed literature search, providing users with an immediate asset to assist in the most tedious step in literature retrieval, checking for subscription holdings against a local online catalogue. PMD2HD can facilitate literature access considerably with respect to the time and cost of manual comparisons of search results with local catalogue holdings. The example presented in this article is related to the library system and collections of the German Cancer Research Centre. However, the PMD2HD software architecture and use of common Z39.50 protocol commands allow for transfer to a broad range of scientific libraries using Z39.50-compatible library information systems.

GRODY - GAMMA RAY OBSERVATORY DYNAMICS SIMULATOR IN ADA

NASA Technical Reports Server (NTRS)

Stark, M.

1994-01-01

Analysts use a dynamics simulator to test the attitude control system algorithms used by a satellite. The simulator must simulate the hardware, dynamics, and environment of the particular spacecraft and provide user services which enable the analyst to conduct experiments. Researchers at Goddard's Flight Dynamics Division developed GRODY alongside GROSS (GSC-13147), a FORTRAN simulator which performs the same functions, in a case study to assess the feasibility and effectiveness of the Ada programming language for flight dynamics software development. They used popular object-oriented design techniques to link the simulator's design with its function. GRODY is designed for analysts familiar with spacecraft attitude analysis. The program supports maneuver planning as well as analytical testing and evaluation of the attitude determination and control system used on board the Gamma Ray Observatory (GRO) satellite. GRODY simulates the GRO on-board computer and Control Processor Electronics. The analyst/user sets up and controls the simulation. GRODY allows the analyst to check and update parameter values and ground commands, obtain simulation status displays, interrupt the simulation, analyze previous runs, and obtain printed output of simulation runs. The video terminal screen display allows visibility of command sequences, full-screen display and modification of parameters using input fields, and verification of all input data. Data input available for modification includes alignment and performance parameters for all attitude hardware, simulation control parameters which determine simulation scheduling and simulator output, initial conditions, and on-board computer commands. GRODY generates eight types of output: simulation results data set, analysis report, parameter report, simulation report, status display, plots, diagnostic output (which helps the user trace any problems that have occurred during a simulation), and a permanent log of all runs and errors. The analyst can send results output in graphical or tabular form to a terminal, disk, or hardcopy device, and can choose to have any or all items plotted against time or against each other. Goddard researchers developed GRODY on a VAX 8600 running VMS version 4.0. For near real time performance, GRODY requires a VAX at least as powerful as a model 8600 running VMS 4.0 or a later version. To use GRODY, the VAX needs an Ada Compilation System (ACS), Code Management System (CMS), and 1200K memory. GRODY is written in Ada and FORTRAN.

Changing Health Care Professionals' Attitudes Toward Spanking.

PubMed

Burkhart, Kimberly; Knox, Michele; Hunter, Kimberly

2016-10-01

Twenty-two pediatric residents and 31 medical students viewed the Play Nicely program. The Play Nicely program is a multimedia program that teaches health care professionals how to counsel parents to use positive parenting and disciplining strategies in response to early childhood aggression. Health care professionals completed pre- and posttraining questionnaires to assess changes in comfort with counseling, parenting knowledge, and attitudes toward spanking. Results indicated at posttraining that health care professionals were significantly more comfortable with counseling parents, had increased parenting knowledge, and decreased positive attitudes toward spanking. Findings suggest that this program holds promise for educating health care professionals on how to counsel parents on positive parenting strategies and positively change attitudes toward spanking. © The Author(s) 2016.

Ethical ideology, animal rights activism, and attitudes toward the treatment of animals.

PubMed

Galvin, Shelley L; Herzog, Harold A

1992-01-01

In two studies, we used the Ethics Position Questionnaire (EPQ) to investigate the relationship between individual differences in moral philosophy, involvement in the animal rights movement, and attitudes toward the treatment of animals. In the first, 600 animal rights activists attending a national demonstration and 266 nonactivist college students were given the EPQ. Analysis of the returns from 157 activists and 198 students indicated that the activists were more likely than the students to hold an "absolutist" moral orientation (high idealism, low relativism). In the second study, 169 students were given the EPQ with a scale designed to measure attitudes toward the treatment of animals. Multiple regression showed that gender and the EPQ dimension of idealism were related to attitudes toward animal use.

Talking with juvenile offenders about gay males and lesbians: implications for combating homophobia.

PubMed

Van de Ven, P

1995-01-01

Violence against gay males and lesbians, much of it perpetrated by young people, has emerged as a significant social problem. Thirty-one juvenile offenders were asked a series of structured questions in order to elucidate the functions their attitudes toward homosexuals serve. In addition, responses were examined for evidence of social-structural and cognitive variables which mediate offending behaviors. Juvenile offenders were found to hold attitudes toward homosexuals characterized by negativity, ambivalence, and defensiveness. These attitudes were maintained by particular myths and stereotypes about gay and lesbian culture, and were related to Opportunism, Impulsivity, Role-Taking Inability, and Disabilities in Social Problem Solving. Specific recommendations for combating homophobic attitudes and behaviors in juvenile offender populations are discussed.

Belief in Life After Death and Attitudes Toward Voluntary Euthanasia.

PubMed

Sharp, Shane

2017-01-01

Research has documented associations among religious affiliation, religious practice, and attitudes toward voluntary euthanasia, yet very few studies have investigated how particular religious beliefs influence these attitudes. I use data from the General Social Survey (GSS; N = 19,967) to evaluate the association between the belief in life after death and attitudes toward voluntary euthanasia. I find that those who believe in life after death are significantly less likely than those who do not believe in life after death or those who doubt the existence of life after death to have positive attitudes toward voluntary euthanasia. These associations hold even after controlling for religious affiliation, religious attendance, views of the Bible, and sociodemographic factors. The findings indicate that to understand individuals' views about voluntary euthanasia, one must pay attention to individuals' particular religious beliefs.

Message framing in social networking sites.

PubMed

Kao, Danny Tengti; Chuang, Shih-Chieh; Wang, Sui-Min; Zhang, Lei

2013-10-01

Online social networking sites represent significant new opportunities for Internet advertisers. However, results based on the real world cannot be generalized to all virtual worlds. In this research, the moderating effects of need for cognition (NFC) and knowledge were applied to examine the impact of message framing on attitudes toward social networking sites. A total of 216 undergraduates participated in the study. Results reveal that for social networking sites, while high-NFC individuals form more favorable attitudes toward negatively framed messages than positively framed messages, low-NFC individuals form more favorable attitudes toward positively framed messages than negatively framed messages. In addition, low-knowledge individuals demonstrate more favorable attitudes toward negatively framed messages than positively framed messages; however, the framing effect does not differentially affect the attitudes of high-knowledge individuals. Furthermore, the framing effect does not differentially affect the attitudes of high-NFC individuals with high knowledge. In contrast, low-NFC individuals with low knowledge hold more favorable attitudes toward positively framed messages than negatively framed messages.

Design development of the Apollo command and service module thrust vector attitude control systems

NASA Technical Reports Server (NTRS)

Peters, W. H.

1978-01-01

Development of the Apollo thrust vector control digital autopilot (TVC DAP) was summarized. This is the control system that provided pitch and yaw attitude control during velocity change maneuvers using the main rocket engine on the Apollo service module. A list of ten primary functional requirements for this control system are presented, each being subordinate to a more general requirement appearing earlier on the list. Development process functions were then identified and the essential information flow paths were explored. This provided some visibility into the particular NASA/contractor interface, as well as relationships between the many individual activities.

PIFCGT: A PIF autopilot design program for general aviation aircraft

NASA Technical Reports Server (NTRS)

Broussard, J. R.

1983-01-01

This report documents the PIFCGT computer program. In FORTRAN, PIFCGT is a computer design aid for determing Proportional-Integral-Filter (PIF) control laws for aircraft autopilots implemented with a Command Generator Tracker (CGT). The program uses Linear-Quadratic-Regulator synthesis algorithms to determine feedback gains, and includes software to solve the feedforward matrix equation which is useful in determining the command generator tracker feedforward gains. The program accepts aerodynamic stability derivatives and computes the corresponding aerodynamic linear model. The nine autopilot modes that can be designed include four maneuver modes (ROLL SEL, PITCH SEL, HDG SEL, ALT SEL), four final approach models (APR GS, APR LOCI, APR LOCR, APR LOCP), and a BETA HOLD mode. The program has been compiled and executed on a CDC computer.

STS-47 crew during JSC fire fighting exercises in the Fire Training Pit

NASA Technical Reports Server (NTRS)

1992-01-01

STS-47 Endeavour, Orbiter Vehicle (OV) 105, crewmembers line up along water hoses during JSC fire fighting exercises held at JSC's Fire Training Pit. In the foreground are (left to right) Pilot Curtis L. Brown, Jr, holding the hose nozzle, Mission Specialist (MS) N. Jan Davis, MS and Payload Commander (PLC) Mark C. Lee, and backup Payload Specialist Stan Koszelak, partially visible at the end of the line. In the background, manning a second hose are backup Payload Specialist Takao Doi, MS Jerome Apt, and Commander Robert L. Gibson. A veteran fire fighter (behind Brown) stands between the two hoses giving instructions. The Fire Training Pit is located across from the Gilruth Center Bldg 207. Doi represents Japan's National Space Development Agency (NASDA).

DSN human factors project

NASA Technical Reports Server (NTRS)

Chafin, R. L.; Martin, T. H.

1980-01-01

The project plan was to hold focus groups to identify the factors influencing the ease of use characteristics of software and to bond the problem. A questionnaire survey was conducted to evaluate those factors which were more appropriately measured with that method. The performance oriented factors were analyzed and relationships hypothesized. The hypotheses were put to test in the experimental phase of the project. In summary, the initial analysis indicates that there is an initial performance effect favoring computer controlled dialogue but the advantage fades fast as operators become experienced. The user documentation style is seen to have a significant effect on performance. The menu and prompt command formats are preferred by inexperienced operators. The short form mnemonic is least favored. There is no clear best command format but the short form mnemonic is clearly the worst.

STS-54 Commander Casper with DSO 802 and Physics of Toys on OV-105's middeck

NASA Technical Reports Server (NTRS)

1993-01-01

STS-54 Commander John H. Casper holds up a paper boomerang before sailing it across the middeck of the Earth-orbiting Endeavour, Orbiter Vehicle (OV) 105. The demonstration was part of Application Specific Preprogrammed Experiment Culture System Physics of Toys (ASPEC) and Detailed Supplementary Objective (DSO) 802, Educational activities. Through telephone and TV downlinks, Casper conversed with students in four schools who participated in a special lesson to discover how specific toys function differently in the classroom compared to those on the Shuttle. The boomerang was used to demonstrate Bernouli's principle and gyroscopic stability. The entire collection of toys will be videotaped for an educational program to be distributed to schools in the fall of this year. This scene was downlinked at 18:11:04:26 GMT.

Crew Training - Apollo 9 - Grumman Aircraft Eng. Corp. (GAEC)

NASA Image and Video Library

1969-01-25

S69-17615 (25 Jan. 1969) --- Astronaut Russell L. Schweickart, lunar module pilot of the Apollo 9 prime crew, participates in a press conference at the Grumman Aircraft Engineering Corporation. Grumman is the contractor to NASA for the Lunar Module. Schweickart is holding a model of a docked Lunar Module/Command and Service Modules. The Apollo 9 mission will evaluate spacecraft lunar module systems performance during manned Earth-orbital flight.

Identification of Knowledge, Skills, and Abilities for Army Design

DTIC Science & Technology

2014-04-01

the problem. Ntuen and Leedom (2007) emphasized that an agile and adaptive commander regularly engages in metacognitive processes to assess whether the...described reflective thinking and metacognition as vital components of design. They described reflective thinking as involving self-awareness of...and evolutionary. It wasn’t like we sat down to write a battalion operations order.” Finally, the ability to hold and consider two distinct, and

STS-30 crewmembers participate in fire fighting training at JSC

NASA Technical Reports Server (NTRS)

1989-01-01

STS-30 Atlantis, Orbiter Vehicle (OV) 104, crewmembers participate in fire fighting training at JSC's fire training pit across from the Gilruth Center Bldg 207. Crewmembers listen to hose and nozzle instructions given by fire / security staff member Robert Fife. Left to right Commander David M. Walker (holding hose nozzle), Mission Specialist (MS) Mark C. Lee, MS Mary L. Cleave, Pilot Ronald J. Grabe, and MS Norman E. Thagard.

Tyurin gives Culbertson a haircut in the Service Module during Expedition Three

NASA Image and Video Library

2001-09-22

ISS003-E-5901 (22 September 2001) --- Astronaut Frank L. Culbertson, Jr. (right), Expedition Three mission commander, holds a vacuum device the crew has fashioned to garner freshly cut hair floating freely, as Mikhail Tyurin cuts his hair in the Zvezda Service Module on the International Space Station (ISS). Tyurin is a flight engineer representing Rosaviakosmos. This image was taken with a digital still camera.

Tyurin gives Culbertson a haircut in the Service Module during Expedition Three

NASA Image and Video Library

2001-09-22

ISS003-E-5896 (22 September 2001) --- Astronaut Frank L. Culbertson, Jr. (right), Expedition Three mission commander, holds a vacuum device the crew has fashioned to garner freshly cut hair floating freely, as Mikhail Tyurin cuts his hair in the Zvezda Service Module on the International Space Station (ISS). Tyurin is a flight engineer representing Rosaviakosmos. This image was taken with a digital still camera.

Nondestructive Evaluation of Metallized Tape Bonds Formed by Tape Automated Bonding (TAB)

DTIC Science & Technology

1989-04-01

powered by micro-positioning linear actuators. 3) Interchangeable sample-holding fixtures mounted upon top of slide assembly. 4) Coverslip gantry mounted...Controller Unit 1) Motor power supplies 2) Motor output servo driver amplifiers 3) "Macro-language" command Interpreter 4) Two-way cormunications with...adjustments are manual knobs giving approximately one degree of tilt adjustment per turn. The servo controller has self-contained power supplies for

14. Photographic copy of photograph, n.d. (original photograph in 55th ...

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

14. Photographic copy of photograph, n.d. (original photograph in 55th Wing Historian files, Offutt AFB, Bellevue, Nebraska). Detail of funnel-shaped drogue that holds the trailing wire antenna, a component of the aircraft's communication system. - Offutt Air Force Base, Looking Glass Airborne Command Post, Looking Glass Aircraft, On Operational Apron covering northeast half of Project Looking Glass Historic District, Bellevue, Sarpy County, NE

STS-130 Nationals Park Visit

NASA Image and Video Library

2010-04-20

The crew of STS-130 present the principal owner of the Washington Nationals, Debra Lerner Cohen (holding montage) with a montage of their mission, Tuesday, April 20, 2010 at Nationals Park in Washington. From left are seen Commander George Zamka, Mission Specialist Nicholas Patrick, Pilot Terry Virts, Debra Lerner Cohen, Edward Cohen, Mission Specialist Kathryn Hire, Mission Specialist Robert Behnken, Lauren Lerner, Jacob Lerner and Alan Gottlieb. Photo Credit: (NASA/Carla Cioffi)

SPHERES Slosh

NASA Image and Video Library

2014-06-18

ISS040-E-013914 (18 June 2014) --- In the International Space Station's Kibo laboratory, NASA astronauts Steve Swanson (left), Expedition 40 commander; and Reid Wiseman, flight engineer, conduct test runs of the SPHERES-Slosh experiment, using the soccer-ball-sized, free-flying satellites known as Synchronized Position Hold, Engage, Reorient, Experimental Satellites, or SPHERES. The SPHERES-Slosh investigation uses small robotic satellites on the space station to examine how liquids move around inside containers in microgravity.

SPHERES Slosh

NASA Image and Video Library

2014-06-18

ISS040-E-014615 (18 June 2014) --- In the International Space Station's Kibo laboratory, NASA astronauts Steve Swanson (top), Expedition 40 commander; and Reid Wiseman, flight engineer, conduct test runs of the SPHERES-Slosh experiment, using the soccer-ball-sized, free-flying satellites known as Synchronized Position Hold, Engage, Reorient, Experimental Satellites, or SPHERES. The SPHERES-Slosh investigation uses small robotic satellites on the space station to examine how liquids move around inside containers in microgravity.

SPHERES Slosh

NASA Image and Video Library

2014-06-18

ISS040-E-014147 (18 June 2014) --- In the International Space Station's Kibo laboratory, NASA astronauts Steve Swanson (foreground), Expedition 40 commander; and Reid Wiseman, flight engineer, conduct test runs of the SPHERES-Slosh experiment, using the soccer-ball-sized, free-flying satellites known as Synchronized Position Hold, Engage, Reorient, Experimental Satellites, or SPHERES. The SPHERES-Slosh investigation uses small robotic satellites on the space station to examine how liquids move around inside containers in microgravity.

SPHERES Slosh

NASA Image and Video Library

2014-06-18

ISS040-E-014536 (18 June 2014) --- In the International Space Station's Kibo laboratory, NASA astronauts Steve Swanson (left), Expedition 40 commander; and Reid Wiseman, flight engineer, conduct test runs of the SPHERES-Slosh experiment, using the soccer-ball-sized, free-flying satellites known as Synchronized Position Hold, Engage, Reorient, Experimental Satellites, or SPHERES. The SPHERES-Slosh investigation uses small robotic satellites on the space station to examine how liquids move around inside containers in microgravity.

SPHERES Slosh

NASA Image and Video Library

2014-06-18

ISS040-E-014444 (18 June 2014) --- In the International Space Station's Kibo laboratory, NASA astronauts Steve Swanson (left), Expedition 40 commander; and Reid Wiseman, flight engineer, conduct test runs of the SPHERES-Slosh experiment, using the soccer-ball-sized, free-flying satellites known as Synchronized Position Hold, Engage, Reorient, Experimental Satellites, or SPHERES. The SPHERES-Slosh investigation uses small robotic satellites on the space station to examine how liquids move around inside containers in microgravity.

SPHERES Slosh

NASA Image and Video Library

2014-06-18

ISS040-E-015415 (18 June 2014) --- In the International Space Station's Kibo laboratory, NASA astronauts Steve Swanson, Expedition 40 commander; and Reid Wiseman (partially obscured), flight engineer, conduct test runs of the SPHERES-Slosh experiment, using the soccer-ball-sized, free-flying satellites known as Synchronized Position Hold, Engage, Reorient, Experimental Satellites, or SPHERES. The SPHERES-Slosh investigation uses small robotic satellites on the space station to examine how liquids move around inside containers in microgravity.

Gravity Probe B spacecraft description

NASA Astrophysics Data System (ADS)

Bennett, Norman R.; Burns, Kevin; Katz, Russell; Kirschenbaum, Jon; Mason, Gary; Shehata, Shawky

2015-11-01

The Gravity Probe B spacecraft, developed, integrated, and tested by Lockheed Missiles & Space Company and later Lockheed Martin Corporation, consisted of structures, mechanisms, command and data handling, attitude and translation control, electrical power, thermal control, flight software, and communications. When integrated with the payload elements, the integrated system became the space vehicle. Key requirements shaping the design of the spacecraft were: (1) the tight mission timeline (17 months, 9 days of on-orbit operation), (2) precise attitude and translational control, (3) thermal protection of science hardware, (4) minimizing aerodynamic, magnetic, and eddy current effects, and (5) the need to provide a robust, low risk spacecraft. The spacecraft met all mission requirements, as demonstrated by dewar lifetime meeting specification, positive power and thermal margins, precision attitude control and drag-free performance, reliable communications, and the collection of more than 97% of the available science data.

Impact of "+Contigo" training on the knowledge and attitudes of health care professionals about suicide

PubMed Central

Santos, José Carlos; Simões, Rosa Maria Pereira; Erse, Maria Pedro Queiroz de Azevedo; Façanha, Jorge Daniel Neto; Marques, Lúcia Amélia Fernandes Alves

2014-01-01

OBJECTIVES: to evaluate the results of "+Contigo" training, developed by nurses and directed at 66 health professionals of integrated school health teams in Primary Health Care. METHOD: quantitative with data collection through the Suicide Behavior Attitude Questionnaire, administered before and after the training. RESULTS: significant increases were observed in suicide prevention knowledge and in changing attitudes of health professionals towards individuals with suicidal behavior. CONCLUSION: these results allow us to affirm that nurses hold scientific and pedagogical knowledge that grant them a privileged position in the health teams, to develop training aimed at health professionals involved in suicide prevention. PMID:25296153

Programming for Pioneer 12

NASA Technical Reports Server (NTRS)

Shem, B. C.

1985-01-01

Background on Pioneer probes 6 to 11 is given as well as an overview of the Pioneer Venus mission. A computer program was written in C language for analyzing radio signals from the Pioneer Venus orbiter. A second program was written to facilitate high gain antenna commands to move the antenna itself, to set the simulated spin period, and to set the attitude control system angle.

Tailhook 91. Part 1. Review of the Navy Investigations

DTIC Science & Technology

1992-09-01

9 VI. MANAGEMENT ERRORS RESULTED IN INADEQUATE INVESTIGATIONS ................... 11 VII. PERSONAL FAILURES AND RESPONSIBILITIES... 14 A. The...Under Secretary of the Navy ...... 14 B. The Commander, NIS ....................... 15 Attitude Toward Women in Military Service...he alert his subordinates to a number of concerns: The general decorum and conduct last year was far less than that expected of mature naval officers

Controlling Attitude of a Solar-Sail Spacecraft Using Vanes

NASA Technical Reports Server (NTRS)

Mettler, Edward; Acikmese, Ahmet; Ploen, Scott

2006-01-01

A paper discusses a concept for controlling the attitude and thrust vector of a three-axis stabilized Solar Sail spacecraft using only four single degree-of-freedom articulated spar-tip vanes. The vanes, at the corners of the sail, would be turned to commanded angles about the diagonals of the square sail. Commands would be generated by an adaptive controller that would track a given trajectory while rejecting effects of such disturbance torques as those attributable to offsets between the center of pressure on the sail and the center of mass. The controller would include a standard proportional + derivative part, a feedforward part, and a dynamic component that would act like a generalized integrator. The controller would globally track reference signals, and in the presence of such control-actuator constraints as saturation and delay, the controller would utilize strategies to cancel or reduce their effects. The control scheme would be embodied in a robust, nonlinear algorithm that would allocate torques among the vanes, always finding a stable solution arbitrarily close to the global optimum solution of the control effort allocation problem. The solution would include an acceptably small angle, slow limit-cycle oscillation of the vanes, while providing overall thrust vector pointing stability and performance.

Priming us and them: automatic assimilation and contrast in group attitudes.

PubMed

Ledgerwood, Alison; Chaiken, Shelly

2007-12-01

Social judgment theory holds that a person's own attitudes function as reference points, influencing the perception of others' attitudes. The authors argue that attitudes themselves are influenced by reference points, namely, the presumed attitudes of others. Whereas exposure to a group that acts as a contextual reference should cause attitude assimilation, exposure to a group that acts as a comparative reference should cause attitude contrast. In Study 1, participants subliminally primed with their political ingroup or outgroup endorsed more extreme political positions than did controls. Study 2 demonstrated that prime types known to uniquely facilitate assimilation and contrast enhanced the polarization effect in the ingroup and outgroup conditions, respectively. Study 3 established an important boundary condition for whether group salience produces attitude assimilation or contrast by showing that perceived closeness to the elderly moderates the direction and strength of the group priming effect. The results suggest that the transition from assimilation to contrast occurs when a group ceases to function as a context and becomes a comparison point. Implications for social judgment theory, assimilation and contrast research, and conflict escalation are discussed. (c) 2007 APA, all rights reserved.

Opinions about child corporal punishment and influencing factors.

PubMed

Bell, Tessa; Romano, Elisa

2012-07-01

The use of corporal punishment has been linked to negative developmental outcomes for children. Despite this finding, Section 43 of the Canadian Criminal Code permits the use of corporal punishment by parents for children 2 to 12 years of age. Therefore, this study's first objective is to investigate opinions toward Section 43 and spanking more generally. The second objective is to investigate predictors of opinions toward Section 43 and spanking more generally. The sample consists of 818 nonparents (70.7% female, 29.0% male) who completed an online study. Results indicate that 38.6% were favorable toward upholding Section 43. However, this decreases to 25.8% when a condition is included, stating that parents would not be prosecuted for mild slaps or spankings. For attitudes toward spanking more generally, results reveal that 16.7% of the participants held favorable attitudes. Hierarchical regression analyses reveal that planning to use corporal punishment upon becoming a parent predicted having a more favorable attitude toward Section 43 as well as toward spanking more generally (after controlling for sociodemographics). In contrast, having experienced violence during one's childhood predicts having less favorable attitudes toward Section 43 and spanking more generally. Significant interactions are found between childhood experiences of corporal punishment and perceptions of parental warmth/support and impulsiveness during discipline in predicting attitudes toward spanking. Those who report experiencing more corporal punishment during childhood but also more parental warmth/support hold more favorable attitudes toward spanking and those who report experiencing more corporal punishment during childhood and also more parental impulsiveness hold less favorable attitudes toward spanking. Findings indicate that examining opinions toward Section 43 and spanking separately is important because these concepts are not synonymous. In addition, both more immediate factors and those related to one's developmental history play a role in predicting opinions toward Section 43 and spanking more generally.

Multiscale factors affecting human attitudes toward snow leopards and wolves.

PubMed

Suryawanshi, Kulbhushansingh R; Bhatia, Saloni; Bhatnagar, Yash Veer; Redpath, Stephen; Mishra, Charudutt

2014-12-01

The threat posed by large carnivores to livestock and humans makes peaceful coexistence between them difficult. Effective implementation of conservation laws and policies depends on the attitudes of local residents toward the target species. There are many known correlates of human attitudes toward carnivores, but they have only been assessed at the scale of the individual. Because human societies are organized hierarchically, attitudes are presumably influenced by different factors at different scales of social organization, but this scale dependence has not been examined. We used structured interview surveys to quantitatively assess the attitudes of a Buddhist pastoral community toward snow leopards (Panthera uncia) and wolves (Canis lupus). We interviewed 381 individuals from 24 villages within 6 study sites across the high-elevation Spiti Valley in the Indian Trans-Himalaya. We gathered information on key explanatory variables that together captured variation in individual and village-level socioeconomic factors. We used hierarchical linear models to examine how the effect of these factors on human attitudes changed with the scale of analysis from the individual to the community. Factors significant at the individual level were gender, education, and age of the respondent (for wolves and snow leopards), number of income sources in the family (wolves), agricultural production, and large-bodied livestock holdings (snow leopards). At the community level, the significant factors included the number of smaller-bodied herded livestock killed by wolves and mean agricultural production (wolves) and village size and large livestock holdings (snow leopards). Our results show that scaling up from the individual to higher levels of social organization can highlight important factors that influence attitudes of people toward wildlife and toward formal conservation efforts in general. Such scale-specific information can help managers apply conservation measures at appropriate scales. Our results reiterate the need for conflict management programs to be multipronged. © 2014 Society for Conservation Biology.

Angling into the Future: Ten Commandments for Recreational Fisheries Science, Management, and Stewardship in a Good Anthropocene

NASA Astrophysics Data System (ADS)

Elmer, Laura K.; Kelly, Lisa A.; Rivest, Stephanie; Steell, S. Clay; Twardek, William M.; Danylchuk, Andy J.; Arlinghaus, Robert; Bennett, Joseph R.; Cooke, Steven J.

2017-08-01

A new geological epoch, the "Anthropocene", has been defined as the period in which humans have had substantial geological and ecological influence on the planet. A positive future for this epoch can be referred to as the "good Anthropocene" and would involve effective management strategies and changes in human behavior that promote the sustainability and restoration of ecosystems. Recreational fisheries hold significant social, cultural, and economic value and can generate many benefits when managed sustainably and thus be an integral part of a "good Anthropocene". Here, we list ten commandments to facilitate persistence and long-term sustainability of recreational fisheries in the "good Anthropocene". This list includes fostering aquatic stewardship, promoting education, using appropriate capture gear, adopting evidence-based management approaches, promoting the concept of resilience, obtaining and using effort data in management, embracing the ecosystem approach, engaging in multilevel collaboration, enhancing accessibility, and embracing optimism. When used singly, or simultaneously, these ten commandments will contribute to the harmonization of sustainable fish populations and angling practices, to create recreational fisheries' "bright spots".

Helicopter flight-control design using an H(2) method

NASA Technical Reports Server (NTRS)

Takahashi, Marc D.

1991-01-01

Rate-command and attitude-command flight-control designs for a UH-60 helicopter in hover are presented and were synthesized using an H(2) method. Using weight functions, this method allows the direct shaping of the singular values of the sensitivity, complementary sensitivity, and control input transfer-function matrices to give acceptable feedback properties. The designs were implemented on the Vertical Motion Simulator, and four low-speed hover tasks were used to evaluate the control system characteristics. The pilot comments from the accel-decel, bob-up, hovering turn, and side-step tasks indicated good decoupling and quick response characteristics. However, an underlying roll PIO tendency was found to exist away from the hover condition, which was caused by a flap regressing mode with insufficient damping.

Proposed CMG momentum management scheme for space station

NASA Technical Reports Server (NTRS)

Bishop, L. R.; Bishop, R. H.; Lindsay, K. L.

1987-01-01

A discrete control moment gyro (CMG) momentum management scheme (MMS) applicable to spacecraft with principal axes misalignments, such as the proposed NASA dual keel space station, is presented in this paper. The objective of the MMS is to minmize CMG angular momentum storage requirements for maintaining the space station near local vertical in the presence of environmental disturbances. It utilizes available environmental disturbances, namely gravity gradient torques, to minimize CMG momentum storage. The MMS is executed once per orbit and generates a commanded torque equilibrium attitude (TEA) time history which consists of a yaw, pitch and roll angle command profile. Although the algorithm is called only once per orbit to compute the TEA profile, the space station will maneuver several discrete times each orbit.

Sexual misbehaviour in the Australian Defence Force.

PubMed

Williams, Angela; Ranson, David

2013-12-01

It is clear from recent media reporting that serious issues have come to light regarding sexual misbehaviour matters within the Australian Defence Force. Subsequent reviews have indicated that these behaviours appear to have been more widespread than the initial media reports suggested and a number of reviews have been undertaken to better understand the problem and address the concerns of victims, Defence command, government and the community. If these problems are not addressed, there is a risk that recruitment to the Defence Forces may become problematic. The strong command structures within the Defence Forces can both exacerbate these misbehaviours through entrenching secrecy and at the same time have the capacity to provide a powerful leadership message that can change attitudes and reduce such misbehaviours.

Uneven transitions: Period- and cohort-related changes in gender attitudes in China, 1995-2007.

PubMed

Shu, Xiaoling; Zhu, Yifei

2012-09-01

This paper analyzes temporal variations in two gender attitudes in China: beliefs about gender equality and perspectives on women's combined work and family roles. It uses the most currently available population series from the 1995, 2001 and 2007 World Value Surveys of 4500 respondents and a series of multilevel cross-classified models to properly estimate period and cohort effects. Attitudes toward women's dual roles manifest neither period nor cohort effects; the population displays a universal high level of acceptance of women's paid employment. Orientations toward gender equality manifest both cohort and period effects: members of the youngest cohort of both sexes hold the most liberal attitudes; the positive effect of college education has increased over time. Attitude toward gender equality in China displays neither a shift toward conservatism nor an over-time trend toward egalitarianism in 1995-2007, a time of rapid economic growth. Copyright © 2012 Elsevier Inc. All rights reserved.

Student computer attitudes, experience and perceptions about the use of two software applications in Building Engineering

NASA Astrophysics Data System (ADS)

Chiner, Esther; Garcia-Vera, Victoria E.

2017-11-01

The purpose of this study was to examine students' computer attitudes and experience, as well as students' perceptions about the use of two specific software applications (Google Drive Spreadsheets and Arquimedes) in the Building Engineering context. The relationships among these variables were also examined. Ninety-two students took part in this study. Results suggest that students hold favourable computer attitudes. Moreover, it was found a significant positive relationship among students' attitudes and their computer experience. Findings also show that students find Arquimedes software more useful and with higher output quality than Google Drive Spreadsheets, while the latter is perceived to be easier to use. Regarding the relationship among students' attitudes towards the use of computers and their perceptions about the use of both software applications, only a significant positive relationship in the case of Arquimedes was found. Findings are discussed in terms of its implications for practice and further research.

STS-109 Crew Return Ceremony at Ellington Field

NASA Image and Video Library

2002-03-13

Photographic documentation of the STS-109 Crew Return Ceremony. The events take place at Hangar 990 at Ellington Field. Views include: Overall view of crewmembers [09319]; View of crewmembers standing on stage talking to group [09320]; Unidentified crewmember waving to crowd [09321]; Unidentified crewmember autographing photo [09322]; Mission Specialist Michael J. Massimino holding crew photo as he talks to child in group [09323]; Pilot Duane G. Carey signing a crew photo for a visitor [09324]; Unidentified crewmember signing a photo for visitor [09325]; Commander Scott D. Altman talking to child in group [09326]; Unidentified crewmember giving a photo to visitor [09327]; Crewmembers exiting plane [09328]; Duane G. Carey shaking hands with visitor. Astronaut Scott Altman smiling in the background [09329); Astronaut Jim Newman kissing his child [09330]; Jim Newman holding his daughter as his son grabs at his pant leg [09331]; Close-up view of Payload Commander John Grunsfeld holding his daughter [09332]; Duane G. Carey standing with family members [09333]; Close-up view of Duane G. Carey placing his hand on a child's head as he is talking to him [09334]; Overall view of spectator watching ceremony [09335]; Close-up view of speaker during ceremony [09336]; Close-up view of Scott Altman speaking to crowd [09337]; Close-up view of a young spectator at ceremony [09338]; Close-up view of Duane G. Carey speaking to the crowd [09339]; Close-up view of Mission Specialist Nancy J. Currie speaking to the crowd [09340]; Close-up view of John M. Grunsfield speaking to the crowd [09341]; Close-up view of Mission Specialist Richard M. Linnehan speaking to the crowd [09342]; Close-up view of James H. Newman speaking to the crowd [09343]; Close-up view of Michael J. Massimino speaking to the crowd [09344

Ethnic Identity as a Predictor of Microaggressions Toward Blacks, Whites, and Hispanic LGBs by Blacks, Whites, and Hispanics.

PubMed

Elias, Troy; Jaisle, Alyssa; Morton-Padovano, Cynthia

2017-01-01

Results of the study suggest racial differences still exist when it comes to attitudes toward homosexuality in the United States. Findings indicate Black individuals hold significantly less favorable attitudes toward lesbian/gay/bisexual (LGB) individuals than non-Hispanic White individuals but not Hispanics, after controlling for demographics. Hispanic individuals' attitudes toward LGBs were not significantly different from those of non-Hispanic Whites. Despite less favorable attitudes toward LGBs, however, Black Americans display a significantly lower likelihood of engaging in LGB-directed microaggressions than both non-Hispanic Whites and Hispanics. Finally, the results of the study indicate that as non-Hispanic White individuals' ethnic identity gets stronger, their likelihood of engaging in microaggressions toward LGBs increases, more so than Black or Hispanic individuals.

Gender differences in attitudes toward nuclear power: a multivariate explanation

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

Baxter, R.K.

1987-01-01

The purpose of this study was to examine gender differences in attitudes toward nuclear power and to discover what factors account for these differences. The marginality explanation for these differences suggest that women have less-favorable attitudes toward nuclear power because they are less concerned about energy supplies and economic growth and are less convinced of the benefits of nuclear power for society than are men. The irrationality explanation holds that women are less favorable toward nuclear power because they are less knowledgeable about this technology than are men. The lay-rationality explanation argues that people form attitudes toward nuclear power whichmore » are consistent with their relevant beliefs, attitudes and values; thus, this explanation suggests that women's unfavorable attitudes toward nuclear power stem from greater concern about environmental protection, exposing society to risk, and lower faith in science and technology. Data for this study were collected via a mail questionnaire administered to a state wide sample of Washington residents (n= 696).« less

Medical students' attitudes toward gay men.

PubMed

Matharu, Kabir; Kravitz, Richard L; McMahon, Graham T; Wilson, Machelle D; Fitzgerald, Faith T

2012-08-08

Healthcare providers' attitudes toward sexual minorities influence patient comfort and outcomes. This study characterized medical student attitudes toward gay men, focusing on behavior, personhood, gay civil rights, and male toughness. A cross-sectional web-based anonymous survey was sent to medical students enrolled at the University of California, Davis (N = 371) with a response rate of 68%. Few respondents expressed negative attitudes toward gay men or would deny them civil rights. More negative responses were seen with respect to aspects of intimate behavior and homosexuality as a natural form of sexual expression. Men and students younger than 25 years old were more likely to endorse negative attitudes toward behavior as well as more traditional views on male toughness. We show that an important minority of students express discomfort with the behavior of gay men and hold to a narrow construction of male identity. These findings suggest that competency training must move beyond conceptual discussions and address attitudes toward behaviors through new pedagogical approaches.

Medical students’ attitudes toward gay men

PubMed Central

2012-01-01

Background Healthcare providers’ attitudes toward sexual minorities influence patient comfort and outcomes. This study characterized medical student attitudes toward gay men, focusing on behavior, personhood, gay civil rights, and male toughness. Methods A cross-sectional web-based anonymous survey was sent to medical students enrolled at the University of California, Davis (N = 371) with a response rate of 68%. Results Few respondents expressed negative attitudes toward gay men or would deny them civil rights. More negative responses were seen with respect to aspects of intimate behavior and homosexuality as a natural form of sexual expression. Men and students younger than 25 years old were more likely to endorse negative attitudes toward behavior as well as more traditional views on male toughness. Conclusions We show that an important minority of students express discomfort with the behavior of gay men and hold to a narrow construction of male identity. These findings suggest that competency training must move beyond conceptual discussions and address attitudes toward behaviors through new pedagogical approaches. PMID:22873668

Why Do White Americans Oppose Race-Targeted Policies? Clarifying the Impact of Symbolic Racism

PubMed Central

Rabinowitz, Joshua L.; Sears, David O.; Sidanius, Jim; Krosnick, Jon A.

2009-01-01

Measures of symbolic racism (SR) have often been used to tap racial prejudice toward Blacks. However, given the wording of questions used for this purpose, some of the apparent effects on attitudes toward policies to help Blacks may instead be due to political conservatism, attitudes toward government, and/or attitudes toward redistributive government policies in general. Using data from national probability sample surveys and an experiment, we explored whether SR has effects even when controlling for these potential confounds and whether its effects are specific to policies involving Blacks. Holding constant conservatism and attitudes toward limited government, SR predicted Whites' opposition to policies designed to help Blacks and more weakly predicted attitudes toward social programs whose beneficiaries were racially ambiguous. An experimental manipulation of policy beneficiaries revealed that SR predicted policy attitudes when Blacks were the beneficiary but not when women were. These findings are consistent with the claim that SR's association with racial policy preferences is not due to these confounds. PMID:20161542

Attitudes Toward Homosexuality in China: Exploring the Effects of Religion, Modernizing Factors, and Traditional Culture.

PubMed

Xie, Ying; Peng, Minggang

2017-09-28

Using the zero-inflated model and nationally representative sample data from the Chinese General Social Surveys 2013, this study systematically explored the effects of religion, modernizing factors, and traditional culture on attitudes toward homosexuality in China. The findings indicate that most Chinese people generally hold conservative attitudes toward homosexuality, as approximately 78.53% of the respondents believed that "same-sex sexual behavior is always wrong." Modernizing factors (i.e., education, exposure to Internet information, and liberal inclinations) predicted greater tolerance for homosexuality, whereas Islamic beliefs negatively influenced respondents' attitudes toward homosexuality. In contrast to the findings of the existing literature, Christian beliefs and traditional culture did not have significant effects on attitudes toward homosexuality. These findings may contribute to the literature by not only quantitatively testing the applicability of several factors identified in most Western studies of this topic but also providing new knowledge of attitudes toward homosexuality in the social context of China.

Teachers' attitudes and beliefs about homosexuality.

PubMed

Pérez-Testor, Carles; Behar, Julia; Davins, Montse; Conde Sala, José Luís; Castillo, José A; Salamero, Manel; Alomar, Elisabeth; Segarra, Sabina

2010-05-01

Schools play a key role in transmitting attitudes towards sexual diversity. Many studies stress the importance of teachers' and other professionals' attitudes towards gay men and/or lesbian women. This study evaluates attitudes and prejudices toward homosexuality in a sample of 254 elementary and high school teachers in Barcelona and its surrounding area. The results obtained using a scale of overt and subtle prejudice and a scale of perceived discrepancy of values indicate that discrepancy between likely behavior and personal values was significantly greater in women, those who hold religious beliefs, churchgoers and people without any gay or lesbian acquaintances. Approximately 88% of the teachers showed no type of prejudiced attitudes towards gay men and lesbian women. The experience of proximity to gay men and/or lesbian women reduces not only the discrepancy between personal values and likely behavior but also the presence of homophobic prejudice. It would be advisable to expand specific teacher training in the subject of sexual diversity in order to reduce prejudicial attitudes, thus fostering non-stereotyped knowledge of homosexuality.

Astronauts Parise and Jernigan check helmets prior to training session

NASA Technical Reports Server (NTRS)

1994-01-01

Attired in training versions of the Shuttle partial-pressure launch and entry suits, payload specialist Dr. Ronald A Parise (left) and astronaut Tamara E. Jernigan, payload commander, check over their helmets prior to a training session. Holding the helmets is suit expert Alan M. Rochford, of NASA. The two were about to join their crew mates in a session of emergency bailout training at JSC's Weightless Environment Training Facility (WETF).

Astronaut Charles Conrad trims hair of Astronaut Paul Weitz

NASA Technical Reports Server (NTRS)

1973-01-01

Astronaut Charles Conrad Jr., Skylab 2 commander, trims the hair of Astronaut Paul J. Weitz, Skylab 2 pilot, during the 28-day Skylab 2 mission in Earth orbit. They are in the crew quarters wardroom of the Orbital Workshop of the Skylab 1 and 2 space station. Weitz is holding a vacuum hose in his right hand. This picture was taken by Scientist-Astronaut Joseph P. Kerwin, Skylab 2 science pilot.

Joint by Design: The Western Desert Campaign

DTIC Science & Technology

2015-05-21

levels, he knew he would be unable to hold his tenuous position indefinitely. Under a full moon that glinted off the desert sand on the night of...treacherous minefields and loose sand under heavy fire from coalition aircraft and artillery. The slow movement further depleted his precious fuel...shifting sands .2 One Allied commander wrote, “Not only was Rommel’s bid for Egypt ended, but he was totally and finally defeated. He would never

Hatch closing between Mir and Shuttle

NASA Image and Video Library

1996-03-28

S76-E-5222 (28 March 1996) --- One would take this triumvirate of thumbs-up symbols to refer to a successful hatch closing, as the Space Shuttle Atlantis is about to be separated from its link with Russia's Mir Space Station. Hold photo with frame number and clock at bottom left. Astronaut Kevin P. Chilton, mission commander, is at lower left. Others are astronauts Richard A. Searfoss (top), pilot, and Michael R. (Rich) Clifford, mission specialist.

AIR FORCE CYBER MISSION ASSURANCE SOURCES OF MISSION UNCERTAINTY

DTIC Science & Technology

2017-04-06

Army’s Command and General Staff College at Fort Leavenworth, Kansas. Lt Col Herwick holds a bachelor of science degree in Computer Science from the...United States Air Force Academy and a master’s degree in Computer Resources and Information Management from Webster University. iii Abstract...vocabulary and while it is common to use conversationally, that usage is not always based on specific definitions. As a result, it finds common usage in

The Philippines’ Contribution to Hemispheric Defense

DTIC Science & Technology

1949-05-10

improvements, equipnent or facilities located at or on any base and .. paid for with funds of the United States. No export tax shall be charged on...contribution to hemitt spheric defense, by Comdr J. Francisco, Philippine Navy. Command and General Staf College. Jl May 49. This Docutnent IS A HOLDING OF ...7 Mar 52-5M Report Documentation Page Form ApprovedOMB No. 0704-0188 Public reporting burden for the collection of information is estimated to

Kotov and Mastracchio during SPHERES Experiment

NASA Image and Video Library

2014-01-16

ISS038-E-031405 (15 Jan. 2014) --- In the International Space Station's Kibo laboratory, Russian cosmonaut Oleg Kotov (left), Expedition 38 commander; and NASA astronaut Rick Mastracchio, flight engineer, conduct a session with a pair of bowling-ball-sized free-flying satellites known as Synchronized Position Hold, Engage, Reorient, Experimental Satellites, or SPHERES. The experiment uses student written algorithms that operate the small satellites to demonstrate critical mission tasks such as formation flying and vehicle dockings.

Pilot Fullerton sleeps on aft flight deck

NASA Image and Video Library

1982-03-30

STS003-22-113 (24 March 1982) --- Astronaut Gordon Fullerton, STS-3 pilot, wearing communication kit assembly mini-headset (HDST), sleeps on aft flight deck resting his back against the floor and his feet against commander's ejection seat (S1) back. On-orbit station control panel A8 and payload station panel L15 appear above Fullerton. Special clips for holding notebooks open and beverage containers are velcroed on various panels. Photo credit: NASA

Pilot Fullerton in ejection escape suit (EES) on aft flight deck

NASA Image and Video Library

1982-03-30

STS003-31-290 (30 March 1982) --- Astronaut Gordon Fullerton, STS-3 pilot, wearing communications kit assembly (ASSY) mini-headset (HDST) and ejection escape suit (EES), holds flexible hose attached to his EES vent hose fitting and second hose for commander's EES while behind pilots ejection seat (S2) seat back on the aft flight deck. Forward flight deck control panels are visible in the background. Photo credit: NASA

KSC00pp0262

NASA Image and Video Library

2000-02-23

The STS-99 crew get ready to leave KSC with their families for a return trip to Houston. From left are Mission Specialist Janice Voss, Pilot Dominic Gorie, Commander Kevin Kregel, and Mission Specialists Mamoru Mohri of Japan, Gerhard Thiele of Germany, and Janet Kavandi, holding her daughter. The STS-99 crew completed a successful 11-day Shuttle Radar Topography Mission mapping 47 million square miles of the Earth's surface before landing at KSC Feb. 22

KSC-00pp0262

NASA Image and Video Library

2000-02-23

The STS-99 crew get ready to leave KSC with their families for a return trip to Houston. From left are Mission Specialist Janice Voss, Pilot Dominic Gorie, Commander Kevin Kregel, and Mission Specialists Mamoru Mohri of Japan, Gerhard Thiele of Germany, and Janet Kavandi, holding her daughter. The STS-99 crew completed a successful 11-day Shuttle Radar Topography Mission mapping 47 million square miles of the Earth's surface before landing at KSC Feb. 22

Ocean Thermal Conversion (OTEC) Project Bottom Cable Protection Study: Environmental Characteristics and Hazards Analysis,

DTIC Science & Technology

1981-10-01

Chesaneake Division, Naval Facilities Engineering Command, Washington, DC) 34. "Strait of Belle Isle Crossing HVDC Transmission - Submarine Cable...phenomena; such as wind storm generated wave action, bottom currents, bottom mudslides, or seismic activity; as well as human activity, such as...engaging a cable. Ship anchors are used to develop holding power on the seafloor for mooring a floating body permanently or temporary on site. The major

Understanding the relationship between student attitudes and student learning

NASA Astrophysics Data System (ADS)

Cahill, Michael J.; McDaniel, Mark A.; Frey, Regina F.; Hynes, K. Mairin; Repice, Michelle; Zhao, Jiuqing; Trousil, Rebecca

2018-02-01

Student attitudes, defined as the extent to which one holds expertlike beliefs about and approaches to physics, are a major research topic in physics education research. An implicit but rarely tested assumption underlying much of this research is that student attitudes play a significant part in student learning and performance. The current study directly tested this attitude-learning link by measuring the association between incoming attitudes (Colorado Learning Attitudes about Science Survey) and student learning during the semester after statistically controlling for the effects of prior knowledge [early-semester Force Concept Inventory (FCI) or Brief Electricity and Magnetism Assessment (BEMA)]. This study spanned four different courses and included two complementary measures of student knowledge: late-semester concept inventory scores (FCI or BEMA) and exam averages. In three of the four courses, after controlling for prior knowledge, attitudes significantly predicted both late-semester concept inventory scores and exam averages, but in all cases these attitudes explained only a small amount of variance in concept-inventory and exam scores. Results indicate that after accounting for students' incoming knowledge, attitudes may uniquely but modestly relate to how much students learn and how well they perform in the course.

Flight evaluation of advanced controls and displays for transition and landing on the NASA V/STOL systems research aircraft

NASA Technical Reports Server (NTRS)

Franklin, James A.; Stortz, Michael W.; Borchers, Paul F.; Moralez, Ernesto, III

1996-01-01

Flight experiments were conducted on Ames Research Center's V/STOL Systems Research Aircraft (VSRA) to assess the influence of advanced control modes and head-up displays (HUD's) on flying qualities for precision approach and landing operations. Evaluations were made for decelerating approaches to hover followed by a vertical landing and for slow landings for four control/display mode combinations: the basic YAV-8B stability augmentation system; attitude command for pitch, roll, and yaw; flightpath/acceleration command with translational rate command in the hover; and height-rate damping with translational-rate command. Head-up displays used in conjunction with these control modes provided flightpath tracking/pursuit guidance and deceleration commands for the decelerating approach and a mixed horizontal and vertical presentation for precision hover and landing. Flying qualities were established and control usage and bandwidth were documented for candidate control modes and displays for the approach and vertical landing. Minimally satisfactory bandwidths were determined for the translational-rate command system. Test pilot and engineer teams from the Naval Air Warfare Center, the Boeing Military Airplane Group, Lockheed Martin, McDonnell Douglas Aerospace, Northrop Grumman, Rolls-Royce, and the British Defense Research Agency participated in the program along with NASA research pilots from the Ames and Lewis Research Centers. The results, in conjunction with related ground-based simulation data, indicate that the flightpath/longitudinal acceleration command response type in conjunction with pursuit tracking and deceleration guidance on the HUD would be essential for operation to instrument minimums significantly lower than the minimums for the AV-8B. It would also be a superior mode for performing slow landings where precise control to an austere landing area such as a narrow road is demanded. The translational-rate command system would reduce pilot workload for demanding vertical landing tasks aboard ship and in confined land-based sites.

Sustainability Of The 21M Missile Maintainer

DTIC Science & Technology

2016-02-16

access to information , procedures, processes , and details of the mission are often deliberately separated. For nuclear surety and security purposes...serious erosion…in expertise” which resulted in process improvements, increased oversight, leadership firings, and the creation of a 4-star command.2 The...duties and tasks into cohesive job clusters that are used to match personnel requirements with personal aptitudes, attitudes , and qualifications.”4

The Necessity for the Military Assistance Command--Vietnam Studies and Observations Group

DTIC Science & Technology

2015-06-12

officials, as well as then-Colonel Edward Lansdale. An opponent of President Eisenhower’s laissez - faire attitude towards French Colonialism, the... leadership since the military was now tasked to 3 John Plaster, SOG: The Secret Wars of America’s...University of California Press Berkeley, 1972), 2. 9 oversee covert military actions. The military leadership argued that covert actions were not

Persistence of toxic and unethical leadership: how does the US Army improve leader development and selection

DTIC Science & Technology

2015-05-21

Source Assessment and Feedback OER Officer Evaluation Report PME Professional Military Education TRADOC Training and Doctrine Command...Toxic leadership is a combination of self-centered attitudes, motivations , and behaviors that have adverse effects on subordinates, the...process of influencing people by providing purpose, direction and motivation to accomplish the mission and improve the organization.”28 The ideal

President and Mrs. Clinton watch launch of Space Shuttle Discovery

NASA Technical Reports Server (NTRS)

1998-01-01

Watching a successful launch of Space Shuttle Discovery from the roof of the Launch Control Center are (left to right) Astronaut Eileen Collins (in flight suit) with unidentified companions, NASA Administrator Daniel Goldin, Astronaut Robert Cabana, First Lady Hillary Rodham Clinton, and U.S. President Bill Clinton. This was the first launch of a Space Shuttle to be viewed by President Clinton, or any President to date. They attended the launch to witness the return to space of American legend John H. Glenn Jr., payload specialist on mission STS-95. Collins will command the crew of STS-93, the first woman to hold that position. Cabana will command the crew of STS-88, the first Space Shuttle mission to carry hardware to space for the assembly of the International Space Station, targeted for liftoff on Dec. 3.

Motor Control of Two Flywheels Enabling Combined Attitude Control and Bus Regulation

NASA Technical Reports Server (NTRS)

Kenny, Barbara H.

2004-01-01

This presentation discussed the flywheel technology development work that is ongoing at NASA GRC with a particular emphasis on the flywheel system control. The "field orientation" motor/generator control algorithm was discussed and explained. The position-sensorless angle and speed estimation algorithm was presented. The motor current response to a step change in command at low (10 kRPM) and high (60 kRPM) was discussed. The flywheel DC bus regulation control was explained and experimental results presented. Finally, the combined attitude control and energy storage algorithm that controls two flywheels simultaneously was presented. Experimental results were shown that verified the operational capability of the algorithm. shows high speed flywheel energy storage (60,000 RPM) and the successful implementation of an algorithm to simultaneously control both energy storage and a single axis of attitude with two flywheels. Overall, the presentation demonstrated that GRC has an operational facility that

A practical six-degree of freedom solar sail dynamics model for optimizing solar sail trajectories with torque constraints

NASA Technical Reports Server (NTRS)

Lisano, Michael E.

2004-01-01

Controlled flight of a solar sail-propelled spacecraft ('sailcraft') is a six-degree-of-freedom dynamics problem. Current state-of-the-art tools that simulate and optimize the trajectories flown by sailcraft do not treat the full kinetic (i.e. force and torque-constrained) motion, instead treating a discrete history of commanded sail attitudes, and either neglecting the sail attitude motion over an integration timestep, or treating the attitude evolution kinematically with a spline or similar treatment. The present paper discusses an aspect of developing a next generation sailcraf trajectory designing optimization tool JPL, for NASA's Solar Sail Spaceflight Simulation Software (SS). The aspect discussed in an experimental approach to modeling full six-degree-of-freedom kinetic motion of a solar sail in a trajectory propagator. Early results from implementing this approach in a new trajectory propagation tool are given.

Singularity-free backstepping controller for model helicopters.

PubMed

Zou, Yao; Huo, Wei

2016-11-01

This paper develops a backstepping controller for model helicopters to achieve trajectory tracking without singularity, which occurs in the attitude representation when the roll or pitch reaches ±π2. Based on a simplified model with unmodeled dynamics, backstepping technique is introduced to exploit the controller and hyperbolic tangent functions are utilized to compensate the unmodeled dynamics. Firstly, a position loop controller is designed for the position tracking, where an auxiliary dynamic system with suitable parameters is introduced to warrant the singularity-free requirement for the extracted command attitude. Then, a novel attitude loop controller is proposed to obviate singularity. It is demonstrated that, based on the established criteria for selecting controller parameters and desired trajectories, the proposed controller realizes the singularity-free trajectory tracking of the model helicopter. Simulations confirm the theoretical results. Copyright © 2016 ISA. Published by Elsevier Ltd. All rights reserved.

A spacecraft attitude and articulation control system design for the Comet Halley intercept mission

NASA Technical Reports Server (NTRS)

Key, R. W.

1981-01-01

An attitude and articulation control system design for the Comet Halley 1986 intercept mission is presented. A spacecraft dynamics model consisting of five hinge-connected rigid bodies is used to analyze the spacecraft attitude and articulation control system performance. Inertial and optical information are combined to generate scan platform pointing commands. The comprehensive spacecraft model has been developed into a digital computer simulation program, which provides performance characteristics and insight pertaining to the control and dynamics of a Halley Intercept spacecraft. It is shown that scan platform pointing error has a maximum value of 1.8 milliradians during the four minute closest approach interval. It is also shown that the jitter or scan platform pointing rate error would have a maximum value of 2.5 milliradians/second for the nominal 1000 km closest approach distance trajectory and associated environment model.

Dynamic Model Investigation of Water Pressures and Accelerations Encountered During Landings of the Apollo Spacecraft

NASA Technical Reports Server (NTRS)

Stubbs, Sandy M.

1967-01-01

An experimental investigation was made to determine impact water pressures, accelerations, and landing dynamics of a 1/4-scale dynamic model of the command module of the Apollo spacecraft. A scaled-stiffness aft heat shield was used on the model to simulate the structural deflections of the full-scale heat shield. Tests were made on water to obtain impact pressure data at a simulated parachute letdown (vertical) velocity component of approximately 30 ft/sec (9.1 m/sec) full scale. Additional tests were made on water, sand, and hard clay-gravel landing surfaces at simulated vertical velocity components of 23 ft/sec (7.0 m/sec) full scale. Horizontal velocity components investigated ranged from 0 to 50 ft/sec (15 m/sec) full scale and the pitch attitudes ranged from -40 degrees to 29 degrees. Roll attitudes were O degrees, 90 degrees, and 180 degrees, and the yaw attitude was 0 degrees.

Data for interventional role of training in changing the knowledge and attitudes of urban mothers towards food hygiene (A case study of Ravansar Township, Kermanshah, Iran).

PubMed

Safari, Yahya; Maleki, Sara; Karimyan, Kamaleddin; Arfaeinia, Hossein; Gupta, Vinod Kumar; Yoosefpour, Nasrin; Shalyari, Naseh; Akhlaghi, Maliheh; Sharfi, Hooshmand; Ziapour, Arash

2018-08-01

Food hygiene is a key factor at the time of production and distribution of food. Therefore, the present study aimed to assess the interventional role of education in changing the knowledge and attitudes of urbane mothers towards food hygiene in Ravansar Township, Kermanshah, Iran. To this end, 200 mothers residing in Ravansar Township were selected using simple random sampling. First, the subjects' knowledge and attitudes towards food hygiene were evaluated in a pre-test, and then after holding some educational sessions, the two variables were assessed again in a post-test using a researcher-made questionnaire with 72 questions. The reliability and validity of the questionnaire were evaluated using Cronbach's alpha and content validity, respectively. After completing the questionnaires, the results were analyzed using the SPSS Statistical Software Version 21.0, and all tests were at the significance level of α = 0.05. The results of the present study demonstrated that education did not promote the knowledge of married subjects, those whose use of media was average or high, and the ones aged above 20 ( P > 0.05). However, the results showed that education had significant effects on other factors ( P < 0.05). In addition, it was revealed that the effects of education on promoting the attitudes of individuals aged above 60, those holding academic education and married subjects were not significant ( P > 0.05), Nevertheless, the results revealed that education had significant effects on other factors ( P < 0.05). Hence, it can be concluded that education plays a major role in changing the knowledge and attitudes of urban mothers towards food hygiene.

Toward a Structuralist Dramaturgy.

ERIC Educational Resources Information Center

Hornby, Richard

In a review of dramaturgy (the collective techniques of dramatic composition), the concept of structuralism holds promise for treating many of the traditional problems in dramatic theory, criticism and production. Traditional attitudes toward intentions, influences, style, and interpretation have long been dominated by a historical approach,…

The Software Design for the Wide-Field Infrared Explorer Attitude Control System

NASA Technical Reports Server (NTRS)

Anderson, Mark O.; Barnes, Kenneth C.; Melhorn, Charles M.; Phillips, Tom

1998-01-01

The Wide-Field Infrared Explorer (WIRE), currently scheduled for launch in September 1998, is the fifth of five spacecraft in the NASA/Goddard Small Explorer (SMEX) series. This paper presents the design of WIRE's Attitude Control System flight software (ACS FSW). WIRE is a momentum-biased, three-axis stabilized stellar pointer which provides high-accuracy pointing and autonomous acquisition for eight to ten stellar targets per orbit. WIRE's short mission life and limited cryogen supply motivate requirements for Sun and Earth avoidance constraints which are designed to prevent catastrophic instrument damage and to minimize the heat load on the cryostat. The FSW implements autonomous fault detection and handling (FDH) to enforce these instrument constraints and to perform several other checks which insure the safety of the spacecraft. The ACS FSW implements modules for sensor data processing, attitude determination, attitude control, guide star acquisition, actuator command generation, command/telemetry processing, and FDH. These software components are integrated with a hierarchical control mode managing module that dictates which software components are currently active. The lowest mode in the hierarchy is the 'safest' one, in the sense that it utilizes a minimal complement of sensors and actuators to keep the spacecraft in a stable configuration (power and pointing constraints are maintained). As higher modes in the hierarchy are achieved, the various software functions are activated by the mode manager, and an increasing level of attitude control accuracy is provided. If FDH detects a constraint violation or other anomaly, it triggers a safing transition to a lower control mode. The WIRE ACS FSW satisfies all target acquisition and pointing accuracy requirements, enforces all pointing constraints, provides the ground with a simple means for reconfiguring the system via table load, and meets all the demands of its real-time embedded environment (16 MHz Intel 80386 processor with 80387 coprocessor running under the VRTX operating system). The mode manager organizes and controls all the software modules used to accomplish these goals, and in particular, the FDH module is tightly coupled with the mode manager.

Lock-up control system for an automatic transmission

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

Higashi, H.; Yashiki, S.; Waki, K.

A lock-up control system is described for an automatic transmission including a torque converter coupled with the output portion on an engine, and a power transmitting gear arrangement coupled with the output portion of the torque converter and controlled to vary the transmitting gear ratio therein by gear ratio control means in accordance with a shifting up or down command supplied to the latter. A lock-up clutch is provided for locking up the output portion of the torque converter to the output portion of the engine. The lock-up control system comprises: lock-up operation control means for controlling the lock-up clutchmore » to be in its operative state and in its inoperative state selectively, and for causing the lock-up clutch to be in the inoperative state thereof when the gear ratio control means performs the control with the shifting up or down command, and lock-up command means for preventing the lock-up operation control means from causing the lock-up clutch to be in the inoperative state thereof until a predetermined reductive variation in the speed of the output portion of the torque converter arises after the shifting up command is supplied to the gear ratio control means under the condition in which the lock-up clutch is in operation to hold a lock-up state.« less

Mental Health Professionals' Attitudes Toward Offenders With Mental Illness (Insanity Acquittees) in Ghana.

PubMed

Adjorlolo, Samuel; Abdul-Nasiru, Inusah; Chan, Heng Choon Oliver; Bambi, Laryea Efua

2018-02-01

Mental health professionals' attitudes toward offenders with mental illness have significant implications for the quality of care and treatment rendered, making it imperative for these professionals to be aware of their attitudes. Yet, this topical issue has received little research attention. Consequently, the present study investigates attitudes toward offenders with mental illness (insanity acquittees) in a sample of 113 registered mental health nurses in Ghana. Using a cross-sectional survey and self-report methodology, the participants respond to measures of attitudes toward offenders with mental illness, attitudes toward mental illness, conviction proneness, and criminal blameworthiness. The results show that mental health nurses who reportedly practiced for a longer duration (6 years and above) were more likely to be unsympathetic, while the male nurses who were aged 30 years and above were more likely to hold offenders with mental illness strictly liable for their offenses. Importantly, the nurses' scores in conviction proneness and criminal blameworthiness significantly predict negative attitudes toward the offenders even after controlling for their attitudes toward mental illness. Yet, when the nurses' conviction proneness and criminal blameworthiness were held constant, their attitudes toward mental illness failed to predict attitudes toward the offenders. This initial finding implies that the nurses' views regarding criminal blameworthiness and conviction may be more influential in understanding their attitudes toward offenders with mental illness relative to their attitudes toward mental illness.

Is the effect of justice system attitudes on recidivism stable after youths' first arrest? Race and legal socialization among first-time youth offenders.

PubMed

Fine, Adam; Cavanagh, Caitlin; Donley, Sachiko; Frick, Paul J; Steinberg, Laurence; Cauffman, Elizabeth

2017-04-01

Youth who hold negative attitudes toward the justice system are more likely to engage in crime. It is particularly important to study attitudes early in someone's criminal career when they may still be open to change. To date, however, there has been no empirical test assessing whether the relation between attitudes and behavior changes after a first arrest. Using a sample of 1,216 first-time, male, juvenile offenders from the Crossroads Study, the present study explored: (a) racial/ethnic differences in the longitudinal patterns of youths' attitudes; and (b) reciprocal associations between youths' attitudes and both their offending behavior and rearrests in the 2.5 years after their first arrest. The results indicated that White youths' attitudes remained largely stable, Black youths' attitudes became more negative, and Latino youths' attitudes became more negative but only among Latino youth who reoffended. Although the results indicated that youths' attitudes were related to both offending and rearrest, the bidirectional relation between attitudes and offending weakened across time. After 2.5 years after their first arrest, attitudes no longer predicted offending or rearrests. These novel findings suggest that a youth's first contact is likely the most impactful. When it comes to young offenders' interactions with the justice system, first impressions matter. (PsycINFO Database Record (c) 2017 APA, all rights reserved).

Genetic and Environmental Influences on Individual Differences in Attitudes Toward Homosexuality: An Australian Twin Study

PubMed Central

Shekar, Sri N.; Zietsch, Brendan P.; Eaves, Lindon J.; Bailey, J. Michael; Boomsma, Dorret I.; Martin, Nicholas G.

2008-01-01

Previous research has shown that many heterosexuals hold negative attitudes toward homosexuals and homosexuality (homophobia). Although a great deal of research has focused on the profile of homophobic individuals, this research provides little theoretical insight into the aetiology of homophobia. To examine genetic and environmental influences on variation in attitudes toward homophobia, we analysed data from 4,688 twins who completed a questionnaire concerning sexual behaviour and attitudes, including attitudes toward homosexuality. Results show that, in accordance with literature, males have significantly more negative attitudes toward homosexuality than females and non-heterosexuals are less homophobic than heterosexuals. In contrast with some earlier findings, age had no significant effect on the homophobia scores in this study. Genetic modelling showed that variation in homophobia scores could be explained by additive genetic (36%), shared environmental (18%) and unique environmental factors (46%). However, corrections based on previous findings show that the shared environmental estimate may be almost entirely accounted for as extra additive genetic variance arising from assortative mating for homophobic attitudes. The results suggest that variation in attitudes toward homosexuality is substantially inherited, and that social environmental influences are relatively minor. PMID:18347968

A piloted simulator study on augmentation systems to improve helicopter flying qualities in terrain flight

NASA Technical Reports Server (NTRS)

Chen, R. T. N.; Talbot, P. D.; Gerdes, R. M.; Dugan, D. C.

1979-01-01

Four basic single-rotor helicopters, one teetering, on articulated, and two hingeless, which were found to have a variety of major deficiencies in a previous fixed-based simulator study, were selected as baseline configurations. The stability and control augmentation systems (SCAS) include simple control augmentation systems to decouple pitch and yaw responses due to collective input and to quicken the pitch and roll control responses; SCAS of rate-command type designed to optimize the sensitivity and damping and to decouple the pitch-roll due to aircraft angular tate; and attitude-command type SCAS. Pilot ratings and commentary are presented as well as performance data related to the task. SCAS control usages and their gain levels associated with specific rotor types are also discussed.

Single step optimization of manipulator maneuvers with variable structure control

NASA Technical Reports Server (NTRS)

Chen, N.; Dwyer, T. A. W., III

1987-01-01

One step ahead optimization has been recently proposed for spacecraft attitude maneuvers as well as for robot manipulator maneuvers. Such a technique yields a discrete time control algorithm implementable as a sequence of state-dependent, quadratic programming problems for acceleration optimization. Its sensitivity to model accuracy, for the required inversion of the system dynamics, is shown in this paper to be alleviated by a fast variable structure control correction, acting between the sampling intervals of the slow one step ahead discrete time acceleration command generation algorithm. The slow and fast looping concept chosen follows that recently proposed for optimal aiming strategies with variable structure control. Accelerations required by the VSC correction are reserved during the slow one step ahead command generation so that the ability to overshoot the sliding surface is guaranteed.

MCC level C formulation requirements. Shuttle TAEM guidance and flight control, STS-1 baseline

NASA Technical Reports Server (NTRS)

Carman, G. L.; Montez, M. N.

1980-01-01

The TAEM guidance and body rotational dynamics models required for the MCC simulation of the TAEM mission phase are defined. This simulation begins at the end of the entry phase and terminates at TAEM autoland interface. The logic presented is the required configuration for the first shuttle orbital flight (STS-1). The TAEM guidance is simulated in detail. The rotational dynamics simulation is a simplified model that assumes that the commanded rotational rates can be achieved in the integration interval. Thus, the rotational dynamics simulation is essentially a simulation of the autopilot commanded rates and integration of these rates to determine orbiter attitude. The rotational dynamics simulation also includes a simulation of the speedbrake deflection. The body flap and elevon deflections are computed in the orbiter aerodynamic simulation.

The Current Commander: Understanding and Effecting Change in Civilian Organizations

DTIC Science & Technology

2007-03-30

communication, treatment according to contract, and no special attention. Out- group members do only what is required, operating within strictly...complete what he calls the Taking-Hold stage. This is a period in which the new leader gains “orientational and evaluative learning and begins to take...focus on those priorities • Being Captured by the Wrong People – new leaders must exercise great care in deciding who to listen to and to what degree

STS-55 crewmembers repair waste water tank on OV-102's middeck

NASA Technical Reports Server (NTRS)

1993-01-01

Three STS-55 crewmembers participate in an inflight maintenance (IFM) exercise to counter problems experienced with a waste water tank below Columbia's, Orbiter Vehicle (OV) 102's, middeck. Mission Specialist 3 (MS3) Bernard A. Harris, Jr, inside the airlock, holds middeck floor access panel MD54G and looks below at Pilot Terence T. Henricks who is in the bilge area. Commander Steven R. Nagel is lying on middeck floor at the left.

STS-99 crew and family DEPART for Houston

NASA Technical Reports Server (NTRS)

2000-01-01

The STS-99 crew get ready to leave KSC with their families for a return trip to Houston. From left are Mission Specialist Janice Voss, Pilot Dominic Gorie, Commander Kevin Kregel, and Mission Specialists Mamoru Mohri of Japan, Gerhard Thiele of Germany, and Janet Kavandi, holding her daughter. The STS-99 crew completed a successful 11-day Shuttle Radar Topography Mission mapping 47 million square miles of the Earth's surface before landing at KSC Feb. 22.

Astronauts Stafford and Slayton visit Soviet Soyuz spacecraft

NASA Technical Reports Server (NTRS)

1975-01-01

Astronauts Thomas P. Stafford, left, NASA ASTP crew commander, and Donald K. Slayton, docking module pilot, visit the Soviet Soyuz spacecraft during the joint phase of the ASTP mission. They hold Soviet containers of borsh (beet soup) over which vodka labels have been pasted. This was the crew's way of toasting each other. The photo was taken in the Orbital Module portion of the Soviet Soyuz spacecraft. The hatch to the Soyuz Descent Vehicle is in center background.

Base Closure: A Road Map for Completion

DTIC Science & Technology

1991-03-22

leadership . At the same time, he should issue written press releases. Selected senior leaders from the base should be briefed separately from key community...they will hold with other agencies on base. These matters should be the commander’s call; they will reflect his style of leadership and preference for...base closure. He alone must foresee what can most likely go wrong as well as what should go right in this arduous process. DCNSIZING AN ORGANIZATIN The

The Tullahoma Campaign: Operational Insights

DTIC Science & Technology

1991-06-07

Bragg in bolstering his manpower. Through great diligence and perseverance, Rosecrans managed to build his cavalry arm up to 10,000 effectives. With the ... managed to erode whatever support he might have had by the time the call for his relief came. 4 2 If Rosecrans had a mixed reputation as a commander, so too... the army and suffered the brunt of the Confederate attack, but fought bravely and managed to avoid disaster.49 Rosecrans did not hold McCook in

Developing Students' Environmental Knowledge through Interactive Worksheets.

ERIC Educational Resources Information Center

Ballantyne, Roy; Witney, Eve; Tulip, David

1998-01-01

Environmental education is often characterized by a concern with developing attitudes and behavior rather than developing environmental knowledge and concepts. Students may thus unknowingly hold and later teach environmental misconceptions. Discusses the use of interactive worksheets to provide a time-effective means of developing students'…

Survey of Expert Opinion on Intelligence and Aptitude Testing.

ERIC Educational Resources Information Center

Snyderman, Mark; Rothman, Stanley

1987-01-01

Psychologists and educational specialists with expertise in areas related to intelligence testing responded to a questionnaire dealing with possible racial and socioeconomic bias of IQ tests. Overall, experts hold positive attitudes about the validity and usefulness of intelligence and aptitude tests. (Author/LHW)

Return of the Teacher

ERIC Educational Resources Information Center

Tubbs, Nigel

2003-01-01

The notion of "enlightenment" holds within it two seemingly contradictory attitudes. On the one hand enlightenment is synonymous with freedom, self-determination, autonomy and independence. On the other hand, in their critique of enlightenment, Horkheimer and Adorno draw attention to its more pernicious features. This critique of enlightenment as…

Justificationist Social Epistemology and Critical Thinking

ERIC Educational Resources Information Center

Ritola, Juho

2011-01-01

In this essay Juho Ritola develops a justificationist approach to social epistemology, which holds that normatively satisfactory social processes pertaining to the acquisition, storage, dissemination, and use of knowledge must be evidence-based processes that include appropriate reflective attitudes by the relevant agents and, consequently, the…

National distracted driving telephone survey finds most drivers answer the call, hold the phone, and continue to drive : traffic tech.

DOT National Transportation Integrated Search

2011-12-01

The National Highway Traffic Safety Administration conducted : the first of several periodic national surveys of distracted : driving to monitor the publics attitudes, knowledge, : and self-reported behavior about cell phones, texting, and : drive...

Job Attitudes of USAF Administrative Personnel

DTIC Science & Technology

1986-04-01

34opportunities for training, giving supervisory feedback, and -developing future leaders. Their findings were bas-ed on researrch Sdate similar to those upon...chance to move in and out of this rewarding functional area, could have a significant effect on the outcome of future attitudinal surveys of the admin...admin personnal to mission accomplishment at newcomer orientetions , commander’s calls, and similar gatherings, especially when families are present. (c

Apollo guidance, navigation and control: Guidance system operations plan for manned CM earth orbital and lunar missions using Program COLOSSUS 3. Section 3: Digital autopilots (revision 14)

NASA Technical Reports Server (NTRS)

1972-01-01

Digital autopilots for the manned command module earth orbital and lunar missions using program COLOSSUS 3 are discussed. Subjects presented are: (1) reaction control system digital autopilot, (2) thrust vector control autopilot, (3) entry autopilot and mission control programs, (4) takeover of Saturn steering, and (5) coasting flight attitude maneuver routine.

TDRSS momentum unload planning

NASA Technical Reports Server (NTRS)

Cross, George R.; Potter, Mitchell A.; Whitehead, J. Douglass; Smith, James T.

1991-01-01

A knowledge-based system is described which monitors TDRSS telemetry for problems in the momentum unload procedure. The system displays TDRSS telemetry and commands in real time via X-windows. The system constructs a momentum unload plan which agrees with the preferences of the attitude control specialists and the momentum growth characteristics of the individual spacecraft. During the execution of the plan, the system monitors the progress of the procedure and watches for unexpected problems.

Momentum management strategy during Space Station buildup

NASA Technical Reports Server (NTRS)

Bishop, Lynda; Malchow, Harvey; Hattis, Philip

1988-01-01

The use of momentum storage devices to control effectors for Space Station attitude control throughout the buildup sequence is discussed. Particular attention is given to the problem of providing satisfactory management of momentum storage effectors throughout buildup while experiencing variable torque loading. Continuous and discrete control strategies are compared and the effects of alternative control moment gyro strategies on peak momentum storage requirements and on commanded maneuver characteristics are described.

Nanosatellite Maneuver Planning for Point Cloud Generation With a Rangefinder

DTIC Science & Technology

2015-06-05

aided active vision systems [11], dense stereo [12], and TriDAR [13]. However, these systems are unsuitable for a nanosatellite system from power, size...command profiles as well as improving the fidelity of gap detection with better filtering methods for background objects . For example, attitude...application of a single beam laser rangefinder (LRF) to point cloud generation, shape detection , and shape reconstruction for a space-based space

Communications satellite no. 2 (CS-2)

NASA Technical Reports Server (NTRS)

1982-01-01

The purpose of the Japanese CS-2 satellite is to provide national communications and industrial communications, such as special emergency and remote communications, and to contribute to the development of technology pertaining to communications satellites. Description and operating parameters of the following satellite components are presented: structure, communications system, telemetry/command system, electric power system, attitude and antenna control system, secondary propulsion system, apogee motor, framework, and heat control system.

Inertial Pointing and Positioning System

NASA Technical Reports Server (NTRS)

Yee, Robert (Inventor); Robbins, Fred (Inventor)

1998-01-01

An inertial pointing and control system and method for pointing to a designated target with known coordinates from a platform to provide accurate position, steering, and command information. The system continuously receives GPS signals and corrects Inertial Navigation System (INS) dead reckoning or drift errors. An INS is mounted directly on a pointing instrument rather than in a remote location on the platform for-monitoring the terrestrial position and instrument attitude. and for pointing the instrument at designated celestial targets or ground based landmarks. As a result. the pointing instrument and die INS move independently in inertial space from the platform since the INS is decoupled from the platform. Another important characteristic of the present system is that selected INS measurements are combined with predefined coordinate transformation equations and control logic algorithms under computer control in order to generate inertial pointing commands to the pointing instrument. More specifically. the computer calculates the desired instrument angles (Phi, Theta. Psi). which are then compared to the Euler angles measured by the instrument- mounted INS. and forms the pointing command error angles as a result of the compared difference.

Fault tolerant attitude sensing and force feedback control for unmanned aerial vehicles

NASA Astrophysics Data System (ADS)

Jagadish, Chirag

Two aspects of an unmanned aerial vehicle are studied in this work. One is fault tolerant attitude determination and the other is to provide force feedback to the joy-stick of the UAV so as to prevent faulty inputs from the pilot. Determination of attitude plays an important role in control of aerial vehicles. One way of defining the attitude is through Euler angles. These angles can be determined based on the measurements of the projections of the gravity and earth magnetic fields on the three body axes of the vehicle. Attitude determination in unmanned aerial vehicles poses additional challenges due to limitations of space, payload, power and cost. Therefore it provides for almost no room for any bulky sensors or extra sensor hardware for backup and as such leaves no room for sensor fault issues either. In the face of these limitations, this study proposes a fault tolerant computing of Euler angles by utilizing multiple different computation methods, with each method utilizing a different subset of the available sensor measurement data. Twenty-five such methods have been presented in this document. The capability of computing the Euler angles in multiple ways provides a diversified redundancy required for fault tolerance. The proposed approach can identify certain sets of sensor failures and even separate the reference fields from the disturbances. A bank-to-turn maneuver of the NASA GTM UAV is used to demonstrate the fault tolerance provided by the proposed method as well as to demonstrate the method of determining the correct Euler angles despite interferences by inertial acceleration disturbances. Attitude computation is essential for stability. But as of today most UAVs are commanded remotely by human pilots. While basic stability control is entrusted to machine or the on-board automatic controller, overall guidance is usually with humans. It is therefore the pilot who sets the command/references through a joy-stick. While this is a good compromise between complete automation and complete human control, it still poses some unique challenges. Pilots of manned aircraft are present inside the cockpit of the aircraft they fly and thus have a better feel of the flying environment and also the limitations of the flight. The same might not be true for UAV pilots stationed on the ground. A major handicap is that visual feedback is the only one available for the UAV pilot. An additional parameter like force feedback on the remote control joy-stick can help the UAV pilot to physically feel the limitation of the safe flight envelope. This can make the flying itself easier and safer. A method proposed here is to design a joy-stick assembly with an additional actuator. This actuator is controlled so as to generate a force feedback on the joy-stick. The control developed for this system is such that the actuator allows free movement for the pilot as long as the UAV is within the safe flight envelope. On the other hand, if it is outside this safe range, the actuator opposes the pilot's applied torque and prevents him/her from giving erroneous commands to the UAV.

Expectancy Disconfirmation and Attitude Change.

PubMed

McPeek, Robert W; Edwards, John D

1975-08-01

An experiment was conducted testing the hypothesis that sources delivering unexpected communications (long-haired males arguing against marijuana usage and seminarians arguing in its favor) would be more persuasive than communicators of expected messages (promarijuana hippies and antimarijuana seminarians). Greater attitude change for unexpected sources was found only when the message was antimarijuana. Unexpected communicators also were rated as more sincere and honest than expected sources. Possible reasons for the failure of the expectancy effect to hold for promarijuana communications were suggested, and the results were discussed in terms of a variety of social-psychological theories.

Comparisons between the attitudes of student nurses and other health and social care students toward illicit drug use: An attitudinal survey.

PubMed

Harling, Martyn R

2017-01-01

In the context of a recent emphasis on compassion in the delivery of health care, the current study set out to measure the attitudes of different groups of health and social care students toward illicit drug users. Previous research has identified variations in the attitudes of different groups of health and social care professionals toward working with illicit drug users. Nurses, in particular, have been reported as holding moralistic or stereotypical views of illicit drug users. However, few studies have measured the attitudes of student nurses or compared their attitudes to other health and social care students. This article describes the use of a bespoke attitude scale to measure the attitudes of cohorts of student nurses, clinical psychology trainees, health and social care, social work and midwifery students at the start of their course (N=308). Results indicated that student nurses had the least tolerant attitudes, reinforcing the need for a specific educational focus on working with illicit drug users in nurse education. Variations between student groups indicate that Interprofessional Education can provide an opportunity to improve attitudes toward illicit drug users, particularly amongst student nurses. Copyright © 2016 Elsevier Ltd. All rights reserved.

The Attitude Control System for the Wilkinson Microwave Anisotropy Probe

NASA Technical Reports Server (NTRS)

Markley, F. Landis; Andrews, Stephen F.; ODonnell, James R., Jr.; Ward, David K.

2003-01-01

The Wilkinson Microwave Anisotropy Probe mission produces a map of the cosmic microwave background radiation over the entire celestial sphere by executing a fast spin and a slow precession of its spin axis about the Sun line to obtain a highly interconnected set of measurements. The spacecraft attitude is sensed and controlled using an inertial reference unit, two star trackers, a digital sun sensor, twelve coarse sun sensors, three reaction wheel assemblies, and a propulsion system. Sufficient attitude knowledge is provided to yield instrument pointing to a standard deviation (l sigma) of 1.3 arc-minutes per axis. In addition, the spacecraft acquires and holds the sunline at initial acquisition and in the event of a failure, and slews to the proper orbit adjust orientations and to the proper off-sunline attitude to start the compound spin. This paper presents an overview of the design of the attitude control system to carry out this mission and presents some early flight experience.

Increased Length of Awareness of Assisted Reproductive Technologies Fosters Positive Attitudes and Acceptance among Women

PubMed Central

Fortin, Chelsea; Abele, Susanne

2016-01-01

Background The field of infertility medicine has witnessed a surge of scientific developments in recent years, but research on public attitudes towards infertility treatments has remained minimal. This study examined the social and demographic factors that affect women’s attitudes towards assisted reproductive technology (ART) in general, as well as their opinions of specific issues related to ART. Materials and Methods This cross-sectional study was conducted from March 2011 to April 2011 by means of an online survey administered to a sample of 287 women. Results Women with a longer length of awareness of ART had significantly greater attitudinal favorability towards ART. Political affiliation was also significantly related to general attitudes, as well as several specific aspects of ART issues. Conclusion The results of this study suggest that several factors influence attitudes that women hold in regards to ART. Identifying some of these factors serves as a crucial starting point for devising strategies to increase public acceptance of ART. PMID:27110326

Reading is for girls!? The negative impact of preschool teachers' traditional gender role attitudes on boys' reading related motivation and skills

PubMed Central

Wolter, Ilka; Braun, Edith; Hannover, Bettina

2015-01-01

According to gender stereotypes, reading is for girls. In this study, we investigated the role of preschool teachers in transmitting such gendered expectations. We suggest that boys are less motivated to read in preschool, and less competent in reading 1 year later in primary school, if their preschool teacher holds a traditional gender role attitude than if the teacher has egalitarian beliefs. In 135 independent dyads of a female preschool teacher (N = 135) and one boy (n = 65) or one girl (n = 70) we measured teacher's gender role attitude, child's reading related motivation as well as precursors of reading skills in preschool, and child's reading skills at the end of first grade in primary school. As expected, the more traditional preschool teachers' gender role attitude was, the weaker was boys' motivation to (learn to) read while girls' motivation was unrelated to teachers' gender role attitude. In either gender, motivation in preschool predicted reading skills at the end of first grade. PMID:26379592

Reading is for girls!? The negative impact of preschool teachers' traditional gender role attitudes on boys' reading related motivation and skills.

PubMed

Wolter, Ilka; Braun, Edith; Hannover, Bettina

2015-01-01

According to gender stereotypes, reading is for girls. In this study, we investigated the role of preschool teachers in transmitting such gendered expectations. We suggest that boys are less motivated to read in preschool, and less competent in reading 1 year later in primary school, if their preschool teacher holds a traditional gender role attitude than if the teacher has egalitarian beliefs. In 135 independent dyads of a female preschool teacher (N = 135) and one boy (n = 65) or one girl (n = 70) we measured teacher's gender role attitude, child's reading related motivation as well as precursors of reading skills in preschool, and child's reading skills at the end of first grade in primary school. As expected, the more traditional preschool teachers' gender role attitude was, the weaker was boys' motivation to (learn to) read while girls' motivation was unrelated to teachers' gender role attitude. In either gender, motivation in preschool predicted reading skills at the end of first grade.

KSC-04PD-0972

NASA Technical Reports Server (NTRS)

2004-01-01

KENNEDY SPACE CENTER, FLA. -- At the Kennedy Space Center Visitor Complex, Dr. Norman E. Thagard (left) is inducted into the U.S. Astronaut Hall of Fame. Thagard was the first American to occupy Russia's Mir space station. Former NASA astronaut James A. Lovell Jr. holds a 'penguin suit,' the clothing Thagard wore aboard Mir. The suit will be put on display in the Hall of Fame. Also chosen for induction in 2004 are Kathryn D. Sullivan, the first American woman to walk in space; Richard O. Covey, commander of the Hubble Space Telescope repair mission; Frederick D. Gregory, the first African-American to command a space mission; and the late Francis R. 'Dick' Scobee, commander of the ill-fated 1986 Challenger mission. The U.S. Astronaut Hall of Fame opened in 1990 to provide a place where space travelers could be remembered for their participation and accomplishments in the U.S. space program. To be eligible for induction, an individual must have been a U.S. citizen, a NASA astronaut, and out of the active astronaut corps at least five years. The five inductees join 52 previously honored astronauts from the ranks of the Gemini, Apollo, Skylab, Apollo-Soyuz, and Space Shuttle programs.

KSC-04pd0972

NASA Image and Video Library

2004-05-01

KENNEDY SPACE CENTER, FLA. -- At the Kennedy Space Center Visitor Complex, Dr. Norman E. Thagard (left) is inducted into the U.S. Astronaut Hall of Fame. Thagard was the first American to occupy Russia's Mir space station. Former NASA astronaut James A. Lovell Jr. holds a "penguin suit," the clothing Thagard wore aboard Mir. The suit will be put on display in the Hall of Fame. Also chosen for induction in 2004 are Kathryn D. Sullivan, the first American woman to walk in space; Richard O. Covey, commander of the Hubble Space Telescope repair mission; Frederick D. Gregory, the first African-American to command a space mission; and the late Francis R. "Dick" Scobee, commander of the ill-fated 1986 Challenger mission. The U.S. Astronaut Hall of Fame opened in 1990 to provide a place where space travelers could be remembered for their participation and accomplishments in the U.S. space program. To be eligible for induction, an individual must have been a U.S. citizen, a NASA astronaut, and out of the active astronaut corps at least five years. The five inductees join 52 previously honored astronauts from the ranks of the Gemini, Apollo, Skylab, Apollo-Soyuz, and Space Shuttle programs.

Learning to Predict and Control the Physics of Our Movements

PubMed Central

2017-01-01

When we hold an object in our hand, the mass of the object alters the physics of our arm, changing the relationship between motor commands that our brain sends to our arm muscles and the resulting motion of our hand. If the object is unfamiliar to us, our first movement will exhibit an error, producing a trajectory that is different from the one we had intended. This experience of error initiates learning in our brain, making it so that on the very next attempt our motor commands partially compensate for the unfamiliar physics, resulting in smaller errors. With further practice, the compensation becomes more complete, and our brain forms a model that predicts the physics of the object. This model is a motor memory that frees us from having to relearn the physics the next time that we encounter the object. The mechanism by which the brain transforms sensory prediction errors into corrective motor commands is the basis for how we learn the physics of objects with which we interact. The cerebellum and the motor cortex appear to be critical for our ability to learn physics, allowing us to use tools that extend our capabilities, making us masters of our environment. PMID:28202784

STS-108 and Expedition 4 pose outside Endeavour's hatch

NASA Technical Reports Server (NTRS)

2001-01-01

KENNEDY SPACE CENTER, Fla. -- The STS-108 and Expedition 4 crews pose outside the hatch to Endeavour. Standing left to right are Daniel W. Bursch, Mission Commander Dominic L. Gorie, Pilot Mark E. Kelly and Expedition 4 Commander Yuri Onufrienko. Gorie and Onufrienko hold the patch for the mission. Kneeling in front are Expedition 4 member Carl E. Walz and Mission Specialists Daniel M. Tani and Linda A. Godwin. Crew members are at KSC for Terminal Countdown Demonstration Test activities that include a simulated launch countdown, plus the emergency exit training from the orbiter and launch pad. STS-108 is a Utilization Flight that will carry the replacement Expedition 4 crew to the International Space Station, as well as the Multi-Purpose Logistics Module Raffaello, filled with supplies and equipment. The l1-day mission is scheduled for launch Nov. 29 on Space Shuttle Endeavour.

KSC-2012-6059

NASA Image and Video Library

2012-11-02

CAPE CANAVERAL, Fla. – At NASA's Kennedy Space Center in Florida, the space shuttle Atlantis pauses during its 10-mile journey to the Kennedy visitor complex for a ceremony to commemorate its transfer. NASA Administrator Charles Bolden, left, and Kennedy Director Bob Cabana hold the just-signed document transferring title of Atlantis from the agency to Kennedy Space Center. Participating in the ceremony, from left, are Chris Ferguson, who commanded Atlantis' final mission, Bolden, Cabana, Karol Bobko, commander of Atlantis' first mission, and Delaware North Companies Parks and Resorts Chief Operating Officer Bill Moore. As part of transition and retirement of the Space Shuttle Program, Atlantis is to be displayed at Kennedy's visitor complex beginning in the summer of 2013. Over the course of its 26-year career, Atlantis traveled 125,935,769 miles during 307 days in space over 33 missions. For more information, visit http://www.nasa.gov/transition Photo credit: NASA/ Tony Gray

Male attitudes to family planning education in Santiago, Chile.

PubMed

Hall, M F

1977-01-01

Male attitudes toward family planning education were assessed through a study of 720 men in Santiago and 240 men in a nearby rural area of Chile. Interviews were conducted by male students at the University of Chile School of Public Health. A large majority of the men were using or planned to use contraception in the future. There was a near consensus that adults should be informed regarding family planning. More than a majority of the respondents favored provision of contraceptive information for unmarried women, but most did not approve of premarital sexual activity for females. Most respondents favored the teaching of sex education in schools "according to the age of the children." Younger and higher class males tended to hold the most liberal attitudes.

Traffic safety issues in North Dakota : phase II : driver knowledge, attitude, behavior and beliefs : focus group : young male drivers

DOT National Transportation Integrated Search

2008-10-01

Traffic safety is a widespread social concern. Tackling the problem requires understanding the people : who are driving. This includes information about driver behavior, but also about perceptions these drivers : hold regarding their driving. North D...

Multivariable control of a forward swept wing aircraft. M.S. Thesis

NASA Technical Reports Server (NTRS)

Quinn, W. W.

1986-01-01

The impact of independent canard and flaperon control of the longitudinal axis of a generic forward swept wing aircraft is examined. The Linear Quadratic Gaussian (LQG)/Loop Transfer Recovery (LTR) method is used to design three compensators: two single-input-single-output (SISO) systems, one with angle of attack as output and canard as control, the other with pitch attitude as output and canard as control, and a two-input-two-output system with both canard and flaperon controlling both the pitch attitude and angle of attack. The performances of the three systems are compared showing the addition of flaperon control allows the aircraft to perform in the precision control modes with very little loss of command following accuracy.

CSM docked DAP/orbital assembly bending interaction-axial case

NASA Technical Reports Server (NTRS)

Turnbull, J. F.; Jones, J. E.

1972-01-01

A digital autopilot which can provide attitude control for the entire Skylab orbital assembly using the service module reaction control jets is described. An important consideration is the potential interaction of the control system with the bending modes of the orbital assembly. Two aspects of this potential interaction were considered. The first was the possibility that bending induced rotations feeding back through the attitude sensor into the control system could produce an instability or self-sustained oscillation. The second was whether the jet activity commanded by the control system could produce excessive loads at any of the critical load points of the orbital assembly. Both aspects were studied by using analytic techniques and by running simulations on the all-digital simulator.

Attitudes toward victims of rape: effects of gender, race, religion, and social class.

PubMed

Nagel, Barbara; Matsuo, Hisako; McIntyre, Kevin P; Morrison, Nancy

2005-06-01

Although previous literature focusing on perceptions of victims of rape has examined how gender, race, and culture influence the attitudes one holds toward victims, these studies have yielded mixed results. This study compared perceptions of victims of rape across a wide range of ages, educational backgrounds, religions, and income levels, while focusing on gender and racial differences. Results indicate (N = 220) that victims of rape are generally viewed more sympathetically by females than by males and by Whites than by African Americans. However, the effect of race disappears when socioeconomic variables are controlled, suggesting a more complex relationship. Also, a hierarchical regression indicates that age, sex, education, and income are significant predictors of attitudes toward victims. This study builds on existing research that examines such attitudes from a cultural perspective and extends this literature by examining the interactive effects of several demographic variables within a community sample.

Smoking at the workplace: Effects of genetic and environmental causal accounts on attitudes towards smoking employees and restrictive policies

PubMed Central

Dar-Nimrod, Ilan; Zuckerman, Miron; Duberstein, Paul

2014-01-01

People hold diverse beliefs regarding the etiologies of individual and group differences in behaviors which, in turn, might affect their attitudes and behaviors. It is important to establish how perceived etiologies for smoking might affect the effectiveness of policy initiatives and prevention efforts. The present study assessed whether exposure to genetic vs. environmental accounts for smoking affects attitudes towards a) workplace-related smoking policies and b) smokers at the workplace. Results indicate that exposure to a genetic explanation led to stronger objections to a smoking restrictive policy compared with a non-genetic explanation. Additionally, participants in the genetic condition were more accepting of a smoker in the workplace than in the environmental condition. Evidently, beliefs about the etiology of smoking influence a range of attitudes related to smokers and smoking related policies. PMID:25530710

WRS2 UPA DA Removal

NASA Image and Video Library

2009-11-23

ISS021-E-032275 (23 Nov. 2009) --- NASA astronaut Leland Melvin, STS-129 mission specialist, holds the failed Urine Processor Assembly / Distillation Assembly (UPA DA) in the Destiny laboratory of the International Space Station while space shuttle Atlantis remains docked with the station. Melvin and European Space Agency astronaut Frank De Winne (out of frame), Expedition 21 commander, removed and packed the UPA DA, then transferred it from the Water Recovery System 2 (WRS-2) rack to Atlantis for stowage on the middeck.

WRS2 UPA DA Removal

NASA Image and Video Library

2009-11-23

ISS021-E-032273 (23 Nov. 2009) --- European Space Agency astronaut Frank De Winne, Expedition 21 commander, holds the failed Urine Processor Assembly / Distillation Assembly (UPA DA) in the Destiny laboratory of the International Space Station while space shuttle Atlantis remains docked with the station. De Winne and NASA astronaut Leland Melvin (out of frame), STS-129 mission specialist, removed and packed the UPA DA, then transferred it from the Water Recovery System 2 (WRS-2) rack to Atlantis for stowage on the middeck.

Krikalev with probe-and-cone docking mechanism (StM) in the Zvezda module

NASA Image and Video Library

2005-06-19

ISS011-E-09210 (19 June 2005) --- Cosmonaut Sergei K. Krikalev, Expedition 11 commander representing Russia's Federal Space Agency, holds the dismantled probe-and-cone docking mechanism from the Progress 18 spacecraft in the Zvezda Service Module of the International Space Station (ISS). The Progress docked to the aft port of the Service Module at 7:42 p.m. (CDT) as the two spacecraft flew approximately 225 statute miles, above a point near Beijing, China.

The Future Role of the Department of Defense in Protecting and Defending America’s Economy in Cyberspace

DTIC Science & Technology

2014-12-12

hold. The retail giant installed a FireEye computer security system that completed a month long testing phase in May 2013. The system was designed ...agencies. Through the Untied States Cyber Command, the Department of Defense has capability that can be used to defend America. This reseach paper looks... reseach paper looks at the roles and responsibilities of the Department of Defense as it relates to Homeland Defense and the protection of credit

2. Photographic copy of architectural elevations for Building 4505, Taylor ...

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

2. Photographic copy of architectural elevations for Building 4505, Taylor & Barnes, Architects & Engineers, 803 W. Third Street, Los Angeles California, O.C.E. Office of Civil Engineer Job No. A(9-10), Military Construction: Materiel Command Flight Test Base, Muroc, California, Hangar and Auxiliary Buildings: Hangar Type P-A, Exterior Elevations, Sheet No. 18, March 1944. Reproduced from the holdings of the National Archives, Pacific Southwest Region - Edwards Air Force Base, North Base, Hangar, End of North Base Road, Boron, Kern County, CA

Countering Threat Finance as a Critical Subset of Irregular Warfare: An Interpretive Case Study of Northern Nigeria

DTIC Science & Technology

2009-05-01

com_content&task=view&id=598&Itemid=34 (accessed 6 May 2009). 148Economic and Crimes Commission, “2nd AML / CFT Compliance Stakeholders’ Summit holds in...Genasci, “Overt Indicators of Islamic Extremism in Nigeria” ( Thesis , Army Command and General Staff College, Fort Leavenworth, Kansas, 2006), 16. 31...Sharia on Niger,” ( Thesis , The College of Arts and Science, Ohio Univeristy, 2004), 38. 40 combined with shrinking domestic investment and

Gemini-Titan - Prelaunch

NASA Image and Video Library

1966-07-18

S66-42738 (18 July 1966) --- Astronaut John W. Young, Gemini-10 command pilot, holds a pair of king-size pliers presented to him by the crew at Pad 19 for in-flight first-echelon maintenance of a spacecraft utility power cord Young earlier had difficulty in connecting. Gunther Wendt (right center background), Pad 19 leader, jokes with Young about the pliers. At right is Dr. Donald K. Slayton, MSC Director of Flight Crew Operations. At left is astronaut Michael Collins, Gemini-10 pilot. Photo credit: NASA

Krayola Khans: An Analysis of US Operational Commanders and Indigenous Warlords

DTIC Science & Technology

2006-05-09

state. History has shown that Afghanistan has rarely, if ever, been ruled from the capital. Traditionally, whoever ruled in Kabul did so with the aid...holds within his tribal network, one could then deduce his CV to be the bond he has with the tribe . Of the three CV’s listed above, the last could be...appearing to be attacking the tribe itself. In this particular case, the use of information operations will be one of the keys to success. The JFC

STS-118 Ascent/Entry Flight Control Team in WFCR

NASA Image and Video Library

2007-09-17

JSC2007-E-46429 (17 Sept. 2007) --- The members of the STS-118 Ascent/Entry flight control team and crewmembers pose for a group portrait in the space shuttle flight control room of Houston's Mission Control Center (MCC). Flight director Steve Stich holds the STS-118 mission logo. Astronauts Scott Kelly, commander, is at left foreground and astronaut Chris Ferguson, spacecraft communicator (CAPCOM), is at right foreground. Additional crewmembers pictured are Charlie Hobaugh, pilot; Barbara R. Morgan, Tracy Caldwell and Rick Mastracchio, all mission specialists.

STS-26 crewmembers participate in bench review at offsite Boeing Bldg

NASA Technical Reports Server (NTRS)

1988-01-01

STS-26 Discovery, Orbiter Vehicle (OV) 103, crewmembers participate in bench review at the offsite Boeing Building. Left to right Mission Specialist (MS) David C. Hilmers, MS George D. Nelson, Commander Frederick H. Hauck, and Pilot Richard O. Covey, holding clipboards with checklists, look over hygiene supplies (razors, deodorants, tooth paste, etc.). Flight Equipment Processing engineer Laura E. Duvall, standing behind crew members, waits to lend a hand in the 'shopping spree'. Photograph was taken by Keith Meyers of the NEW YORK TIMES.

1. Photographic copy of architectural plan for Building 4505, Taylor ...

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

1. Photographic copy of architectural plan for Building 4505, Taylor & Barnes, Architects & Engineers, 803 W. Third Street, Los Angeles California, O.C.E. Office of Civil Engineer Job No. A(9-10), Military Construction: Materiel Command Flight Test Base, Muroc, California, Hangar and Auxiliary Buildings: Hangar Type P-A, Floor Plan & Roof Plan, Sheet No. 16, March 1944. Reproduced from the holdings of the National Archives, Pacific Southwest Region - Edwards Air Force Base, North Base, Hangar, End of North Base Road, Boron, Kern County, CA

Commanders Responsibilities in the Operations Process During the 1864 Red River Expedition

DTIC Science & Technology

2015-05-21

1999), 340. (Hereafter referred to as J.C.C.W.). 20 J.C.C.W., 278. 6 Major General Frederick Steele , 17,000 troops from the Department of the...Assistant Quartermaster Captain D .N. Welch noted “the navy is seizing all that cotton they can get hold of. Every gun -boat is loaded with cotton...then precipitated an increasing withdrawal, turned into an all-out rout, of the Union forces as “ Guns , knapsacks, blankets—everything was thrown away by

SPHERES Slosh

NASA Image and Video Library

2014-06-18

ISS040-E-014468 (18 June 2014) --- In the International Space Station's Kibo laboratory, NASA astronauts Steve Swanson (left), Expedition 40 commander; and Reid Wiseman, flight engineer, conduct test runs of the SPHERES-Slosh experiment, using the soccer-ball-sized, free-flying satellites known as Synchronized Position Hold, Engage, Reorient, Experimental Satellites, or SPHERES. The SPHERES-Slosh investigation uses small robotic satellites on the space station to examine how liquids move around inside containers in microgravity. Russian cosmonaut Maxim Suraev (bottom right), flight engineer, looks on.

KSC-97PC1681

NASA Image and Video Library

1997-11-19

STS-87 Commander Kevin Kregel sits in his launch and entry suit in the Operations and Checkout Building holding a cap of his son’s soccer team of which Kregel is the coach. Shortly, he and the five other crew members of STS-87 will depart for Launch Pad 39B, where the Space Shuttle Columbia awaits liftoff on a 16-day mission to perform microgravity and solar research. A veteran of two space flights (STS-70 and -78), Kregel has logged more than 618 hours in space

An Analysis of the United States Special Operations Command’s Acquisition Process to Determine Its Compliance with Acquisition Reform Initiatives of the Past Decade

DTIC Science & Technology

1996-12-01

This includes an exemption from publishing the opportunity in the Commerce Business Daily ( CBD ) and elimination of the requirement to hold the...of assigned programs. In discharging this responsibility, thc 990 coor.int-tes his efforts with ether ASN(RDMA) offices, b. TEFlO..M-VAL OPERATIONS...Communications, Computers and Information Systems CA Civil Affairs CAIV Cost as an Independent Variable CBD Commerce Business Daily CBPL Capabilities

Apollo 11 - Prime and Backup Crews - Geology Training - TX

NASA Image and Video Library

1969-03-03

S69-25199 (25 Feb. 1969) --- Two Apollo 11 astronauts study a rock specimen during a geological field trip to the Quitman Mountains area near the Fort Quitman ruins in far west Texas. On the left is James A. Lovell Jr., Apollo 11 backup crew commander; and on the right is Fred W. Haise Jr., backup crew lunar module pilot. Lovell holds a camera which was used in simulating taking pictures of actual lunar samples on the surface of the Moon.

SPHERES Vertigo

NASA Image and Video Library

2014-07-25

ISS040-E-079083 (25 July 2014) --- In the International Space Station?s Kibo laboratory, NASA astronaut Steve Swanson, Expedition 40 commander, enters data in a computer in preparation for a session with a trio of soccer-ball-sized robots known as the Synchronized Position Hold, Engage, Reorient, Experimental Satellites, or SPHERES. The free-flying robots were equipped with stereoscopic goggles called the Visual Estimation and Relative Tracking for Inspection of Generic Objects, or VERTIGO, to enable the SPHERES to perform relative navigation based on a 3D model of a target object.

Attitudes toward unauthorized immigrants, authorized immigrants, and refugees.

PubMed

Murray, Kate E; Marx, David M

2013-07-01

Rates of human migration are steadily rising and have resulted in significant sociopolitical debates over how to best respond to increasing cultural diversity and changing migration patterns. Research on prejudicial attitudes toward immigrants has focused on the attitudes and beliefs that individuals in the receiving country hold about immigrants. The current study enhances this literature by examining how young adults view authorized and unauthorized immigrants and refugees. Using a between-groups design of 191 undergraduates, we found that participants consistently reported more prejudicial attitudes, greater perceived realistic threats, and greater intergroup anxiety when responding to questions about unauthorized compared with authorized immigrants. Additionally, there were differences in attitudes depending on participants' generational status, with older-generation participants reporting greater perceived realistic and symbolic threat, prejudice, and anxiety than newer-generation students. In some instances, these effects were moderated by participant race/ethnicity and whether they were evaluating authorized or unauthorized immigrants. Lastly, perceived realistic threat, symbolic threat, and intergroup anxiety were significant predictors of prejudicial attitudes. Overall, participants reported positive attitudes toward refugees and resettlement programs in the United States. These findings have implications for future research and interventions focused on immigration and prejudice toward migrant groups. PsycINFO Database Record (c) 2013 APA, all rights reserved.

Community Influences on White Racial Attitudes: What Matters and Why?

PubMed Central

Taylor, Marylee C.; Mateyka, Peter J.

2014-01-01

Tracing the roots of racial attitudes in historical events and individual biographies has been a longstanding goal of race relations scholars. Recent years have seen a new development in racial attitude research: Local community context has entered the spotlight as a potential influence on racial views. The race composition of the locality has been the most common focus; evidence from earlier decades suggests that white Americans are more likely to hold anti-black attitudes if they live in areas where the African American population is relatively large. However, an influential 2000 article argued that the socioeconomic composition of the white community is a more powerful influence on white attitudes: In low-SES locales, “stress-inducing” deprivations and hardships in whites’ own lives purportedly lead them to disparage blacks. The study reported here re-assesses this “scapegoating” claim, using data from the 1998–2002 General Social Surveys linked to 2000 census information about communities. Across many dimensions of racial attitudes, there is pronounced influence of both local racial proportions and college completion rates among white residents. However, the economic dimension of SES exerts negligible influence on white racial attitudes, suggesting that local processes other than scapegoating must be at work. PMID:21910274

Pharmacy Student Attitudes and Willingness to Engage in Care with People Living with HIV/AIDS

PubMed Central

Furtek, Kari J.; Malladi, Ruthvik; Ng, Eric; Zhou, Maria

2016-01-01

Objective. To describe the extent to which pharmacy students hold negative attitudes toward people living with HIV/AIDS (PLWHA) and to determine whether background variables, student knowledge, and professional attitudes may affect willingness to care for PLWHA. Methods. An online survey tool was developed and administered to 150 pharmacy students in their third professional year. Descriptive and stepwise multivariate regressions were performed. Results. While descriptive results showed a majority of respondents had favorable professional attitudes towards caring for PLWHA, most pharmacy students expressed discomfort with specific attitudes about being in close physical contact and receiving selected services from PLWHA. Multivariate results revealed that: (1) being a minority predicted greater knowledge; (2) having received prior HIV instruction and greater HIV knowledge predicted more positive professional attitudes caring for PLWHA; (3) being more socially liberal, having more positive professional attitudes caring for PLWHA, and having greater empathy towards PLWHA predicted student willingness to provide services. Conclusion. Future educational interventions specifically targeted toward socially conservative whites may impact greater student willingness to care for PLWHA. Additional research should also explore the generalizability of the present findings and modeling to pharmacy students in other regions of the country. PMID:27170816

Instructional strategies to improve women's attitudes toward science

NASA Astrophysics Data System (ADS)

Newbill, Phyllis Leary

Although negative attitudes toward science are common among women and men in undergraduate introductory science classes, women's attitudes toward science tend to be more negative than men's. The reasons for women's negative attitudes toward science include lack of self-confidence, fear of association with social outcasts, lack of women role models in science, and the fundamental differences between traditional scientific and feminist values. Attitudes are psychological constructs theorized to be composed of emotional, cognitive, and behavioral components. Attitudes serve functions, including social expressive, value expressive, utilitarian, and defensive functions, for the people who hold them. To change attitudes, the new attitudes must serve the same function as the old one, and all three components must be treated. Instructional designers can create instructional environments to effect attitude change. In designing instruction to improve women's attitudes toward science, instructional designers should (a) address the emotions that are associated with existing attitudes, (b) involve credible, attractive women role models, and (c) address the functions of the existing attitudes. Two experimental instructional modules were developed based on these recommendations, and two control modules were developed that were not based on these recommendations. The asynchronous, web-based modules were administered to 281 undergraduate geology and chemistry students at two universities. Attitude assessment revealed that attitudes toward scientists improved significantly more in the experimental group, although there was no significant difference in overall attitudes toward science. Women's attitudes improved significantly more than men's in both the experimental and control groups. Students whose attitudes changed wrote significantly more in journaling activities associated with the modules. Qualitative analysis of journals revealed that the guidelines worked exactly as predicted for some students.