NobleBlocks

United States Department of the Air Force

governmentWashington, District of Columbia, United States

Research output, citation impact, and the most-cited recent papers from United States Department of the Air Force (United States). Aggregated across the NobleBlocks index of 300M+ scholarly works.

Total works
156
Citations
910
h-index
16
i10-index
29
Also known as
U.S. Department of the Air ForceUnited States Department of the Air Force

Top-cited papers from United States Department of the Air Force

Barriers to the long‐term recovery of individuals with disabilities following a disaster
Laura M. Stough, Amy N. Sharp, J. Aaron Resch, Curt Decker +1 more
2015· Disasters129doi:10.1111/disa.12161

This study examines how pre-existing disabling conditions influenced the recovery process of survivors of Hurricane Katrina. It focuses specifically on the barriers that hindered the recovery process in these individuals. Focus groups were convened in four Gulf Coast states with 31 individuals with disabilities who lived in or around New Orleans, Louisiana, prior to Hurricane Katrina in August 2005. Qualitative data were analysed using grounded theory methodology. Five themes emerged as the most significant barriers to recovery: housing; transportation; employment; physical and mental health; and accessing recovery services. While these barriers to recovery were probably common to most survivors of the disaster, the research results suggest that disability status enhanced the challenges that participants experienced in negotiating the recovery process and in acquiring resources that accommodated their disabilities. The findings indicate that, when disaster recovery services and resources did not accommodate the needs of individuals with disabilities, recovery was hindered. Recovery efforts should include building accessible infrastructure and services that will allow for participation by all.

CloudSat Anomaly Recovery and Operational Lessons Learned
Michael Nayak
2012· SpaceOps 2012 Conference60doi:10.2514/6.2012-1295798

In April 2011, NASA’s pioneering cloud profiling radar satellite, CloudSat, experienced a battery anomaly that placed it into emergency mode and rendered it operations incapable. All initial attempts to recover the spacecraft failed as the resultant power limitations could not support even the lowest power mode. Originally part of a six-satellite constellation known as the “A-Train”, CloudSat was unable to stay within its assigned control box, posing a threat to other A-Train satellites. CloudSat needed to exit the constellation, but with the tenuous power profile, conducting maneuvers was very risky. The team was able to execute a complex sequence of operations which recovered control, conducted an orbit lower maneuver, and returned the satellite to safe mode, within one 65 minute sunlit period. During the course of the anomaly recovery, the team developed several bold, innovative operational strategies. Details of the investigation into the root-cause and the multiple approaches to revive CloudSat are examined. Satellite communication and commanding during the anomaly are presented. A radical new system of “Daylight Only Operations ” (DO-OP) was developed, which cycles the payload and subsystem components off in tune with earth eclipse entry and exit in order to maintain positive power and thermal profiles. The scientific methodology and operational results behind the

Ear Acupuncture for Acute Sore Throat: A Randomized Controlled Trial
David A. Moss, Paul Crawford
2015· The Journal of the American Board of Family Medicine39doi:10.3122/jabfm.2015.06.150014

BACKGROUND: Sore throat is a common cause of pain in outpatient encounters. Battlefield auricular acupuncture (the placing of needles in specific points in the ear) is a modality used to treat acute pain associated with a variety of ailments. The aim of our study was to determine whether auricular acupuncture reduces pain, medication usage, and missed work hours when added to standard therapy in adult patients with acute sore throat. METHODS: We conducted an unblinded, pragmatic, randomized controlled trial among adult, nonpregnant patients presenting to an Air Force family medicine clinic with pain from acute sore throat. A total of 54 patients were followed for 48 hours after treatment. RESULTS: Patients receiving auricular acupuncture reported lower pain scores than those who did not at 15 minutes (6.0 [95% confidence interval (CI), 5.4-6.6] vs 2.6 [95% CI, 1.7-3.5]; P < .0001), 6 hours (4.8 [95% CI, 4.0-5.6] vs 2.5 [95% CI, 1.6-3.4]; P = .0005), and 24 hours (4.1 [95% CI, 3.3-4.9] vs 1.3 [95% CI, 1.0-2.8]; P = .0006). They also reported taking fewer cumulative doses of pain medication at 6 hours (1.07 [95% CI, 0.69-1.45] vs 0.39 [95% CI, 0.2-0.58]; P = .003), 24 hours (2.63 [95% CI, 1.95-3.31] vs 1.37 [95% CI, 0.92-1.82]; P = .004), and 48 hours (4.07 [95% CI, 2.9-5.24] vs 2.19 [95% CI, 1.44-2.94]; P = .009). There was no difference in time missed from work between the auricular acupuncture and standard therapy groups. CONCLUSIONS: Compared with usual treatment, battlefield auricular acupuncture was associated with reduced sore throat pain for 24 hours and decreased use of pain medication for up to 48 hours. There was no apparent effect on hours missed from work.

Formation Flying Satellite Control Around the L2 Sun-Earth Libration Point
David Folta, Bauer, Frank, Nicholas Hamilton, Russell Carpenter
· NASA STI Repository (National Aeronautics and Space Administration)38

This paper discusses the development of a linear control algorithm for formations in the vicinity of the L2 sun-Earth libration point. The development of a simplified extended Kalman filter is included as well. Simulations are created for the analysis of the stationkeeping and various formation maneuvers of the Stellar Imager mission. The simulations provide tracking error, estimation error, and control effort results. For formation maneuvering, the formation spacecraft track to within 4 meters of their desired position and within 1.5 millimeters per second of their desired zero velocity. The filter, with few exceptions, keeps the estimation errors within their three-sigma values. Without noise, the controller performs extremely well, with the formation spacecraft tracking to within several micrometers. Each spacecraft uses around 1 to 2 grams of propellant per maneuver, depending on the circumstances.

Family Violence in the Air Force: A Look at Offenders and the Role of the Family Advocacy Program
Willard W. Mollerstrom, Michael A. Patchner, Joel S. Milner
1992· Military Medicine35doi:10.1093/milmed/157.7.371

Family violence exists throughout society and, unfortunately, also among military families. The Air Force's Family Advocacy Program is designed not only to treat victims, offenders, and families of abuse and neglect, but also to provide prevention services. Each Air Force base has a Family Advocacy Officer, who is a credentialed clinical social worker, charged with the duty of addressing spouse abuse and child maltreatment problems. To evaluate the effectiveness of current services, and to improve the quality of the services provided through the Family Advocacy Program, the Air Force is currently conducting a 4-year evaluation study. This research represents the largest study ever conducted on family violence, with either military or civilian offenders. This paper, based upon the first year of data collected at approximately one-third of all Air Force medical treatment facilities, reported on the descriptive characteristics of the substantiated cases of spouse abuse and child abuse/neglect, and the interventions which were being recommended to alleviate the abusive situations and to prevent future maltreatment. The results will guide policy and future manning and staffing decisions for the Air Force Family Advocacy Program, and serve to document the kinds of treatment strategies which work most effectively for which kinds of problems. Findings are expected to help improve the quality of services to victims, offenders, and families, and to do so for those who are civilians as well as for those who are in the military.(ABSTRACT TRUNCATED AT 250 WORDS)

Carcinosarcoma and Mixed Mesodermal Tumor of the Ovary
Bernard Czernobilsky, GARY C. LaBARRE
1968· Obstetrics and Gynecology35doi:10.1097/00006250-196801000-00004

From the Departments of Pathology and of Obstetrics and Gynecology, School of Medicine, University of Pennsylvania, Philadelphia, Pa. The views expressed herein are those of the authors and do not necessarily reflect the views of the Air University, the United States Air Force, or the Department of Defense. Submitted for publication June 5, 1967.

Influence of Hibernation on Survival Time and Weight Loss of X-Irradiated Ground Squirrels.
John Doull, Kenneth P. DuBois
1953· Experimental Biology and Medicine25doi:10.3181/00379727-84-20647

The LD50 of x-ray for non-hibernating ground squirrels (Citellus tride-cemlineatus) is approximately 700 r. Non-hibernating animals given 800 r of x-ray exhibited over 80% mortality within 10 days. Ground squirrels irradiated while in hibernation and maintained in the hibernating state following irradiation exhibited no mortality within 30 days following exposure to x-ray, but when these animals were returned to the homeothermic state either at 2 weeks or at 4 weeks after irradiation, death ensued within 10 days. Animals which were maintained in hibernation following lethal doses of x-ray eventually succumbed, although survival was greatly prolonged. Thus, while hibernation markedly increased the survival time in this species following lethal doses of x-ray, it did not alter the ultimate mortality.

Mars Program Independent Assessment Team Report
Thomas Young, James O. Arnold, Thomas Brackey, M. H. Carr +4 more
200021

The Climate Orbiter failed to achieve orbit on September 23, 1999. On December 3, 1999, Polar Lander and two Deep Space 2 microprobes failed. As a result, the NASA Administrator established the Program Independent Assessment Team (MPIAT) with the following charter: 1) Review and analyze successes and failures of recent and Deep Space Missions which include: a) Global Surveyor, b) Climate Orbiter, c) Pathfinder, d) Polar Lander, e) Deep Space 1, and f) Deep Space 2; 2) Examine the relationship between and among, NASA Jet Propulsion Laboratory (JPL), California Institute of Technology (Caltech), NASA Headquarters, and industry partners; 3) Assess effectiveness of involvement of scientists; 4) Identify lessons learned from successes and failures; 5) Review revised Surveyor Program to assure lessons learned are utilized; 6) Oversee Polar Lander and Deep Space 2 failure reviews; and 7) Complete by March 15, 2000. In-depth reviews were conducted at NASA Headquarters, JPL, and Lockheed Martin Astronautics (LMA). Structured reviews, informal sessions with numerous Program participants, and extensive debate and discussion within the MPIAT establish the basis for this report. The review process began on January 7, 2000, and concluded with a briefing to the NASA Administrator on March 14, 2000. This report represents the integrated views of the members of the MPIAT who are identified in the appendix. In total, three related reports have been produced: a summary report, this report entitled Mars Program Independent Assessment Team Report, and the Report on the Loss of the Polar Lander and Deep Space 2 Missions.

Multi‐carrier radar waveforms for communications and detection
John Ellinger, Zhiping Zhang, Michael C. Wicks, Zhiqiang Wu
2016· IET Radar Sonar & Navigation17doi:10.1049/iet-rsn.2016.0244

The use of multi‐carrier waveforms, such as Orthogonal Frequency Division Multiplexing (OFDM) as used in radio communication, for radar operations has gained strong interest recently. While the authors have completed research on using multi‐carrier waveforms for simultaneous radar and communications operations, this study focuses on the recent research on using these waveforms for communications. Namely, they demonstrate how to employ OFDM to modulate Multi‐Frequency Complementary Phase Coded sequences for wireless communications.

An analytical method for ride quality of flexible airplanes
Robert L. Swaim, David K. Schmidt, Philip A. Roberts, A. J. Hinsdale
1977· AIAA Journal16doi:10.2514/3.7295

A new and easily used method of aircraft ride quality analysis is developed, and its use is illustrated by a numerical example using DC-8 airplane equations of motion. The method readily allows any type of stability augmentation system to be included for good handling qualities. A particularly powerful method of specifying and achieving all roots of a desired closed-loop characteristic equation by use of full state variable feedback is described and applied to the DC-8 example.

Tunable inductors using vanadium dioxide as the control material
S. Wang, Weisong Wang, Eunsung Shin, T. Quach +1 more
2017· Microwave and Optical Technology Letters13doi:10.1002/mop.30459

ABSTRACT This article experimentally studies the application of vanadium dioxide (VO 2 ) thin film for tunable inductor design. VO 2 's temperature‐dependent conductivity is used for implementing a tunable inductor using VO 2 as the control material. Two different configurations of inductors are designed. One design uses a short VO 2 bar as a circuit switch and the other uses VO 2 to replace the full spiral coil inductor. The frequency range in the experiments is 0.3–2 GHz. Experimental results show a 32% tuning range (1–0.68 nH) through applied temperature variation (25–100°C) in the devices. These results are matched by a working circuit π model. © 2017 Wiley Periodicals, Inc. Microwave Opt Technol Lett 59:1057–1061, 2017

Formation Flying Satellite Control Around the L2 Sun-Earth Libration Point
Nicholas H. Hamilton, David Folta, Russell Carpenter
2002· AIAA/AAS Astrodynamics Specialist Conference and Exhibit13doi:10.2514/6.2002-4528

A growing interest in formation flying satellites demands development and analysis of control and estimation algorithms for station-keeping and formation maneuvering. This thesis discusses the development of a discrete linear-quadratic- regulator control algorithm for formations in the vicinity of the L2 sun-earth libration point. The development of an appropriate Kalman filter is included as well. Simulations are created for the analysis of the station-keeping and various formation maneuvers of the Stellar Imager mission. The simulations provide tracking error, estimation error, and control effort results. From the control effort, useful design parameters such as AV and propellant mass are determined. For formation maneuvering, the drone spacecraft track to within 4 meters of their desired position and within 1.3 millimeters per second of their desired zero velocity. The filter, with few exceptions, keeps the estimation errors within their three-sigma values. Without noise, the controller performs extremely well, with the drones tracking to within several micrometers. Bach drone uses around 1 to 2 grams of propellant per maneuver, depending on the circumstances.

Comparison of the Airway Scope and Macintosh Laryngoscope With In-Line Cervical Stabilization by the Semisolid Neck Collar: Manikin Study
Kohei Takahashi, Naoto Morimura, Tetsuya Sakamoto, Takahiro Onuki +3 more
2010· The Journal of Trauma: Injury, Infection, and Critical Care12doi:10.1097/ta.0b013e3181a70940

BACKGROUND: The usefulness of Airway Scope (AWS) and Macintosh direct laryngoscope (ML) for patients with trauma requiring intubation with in-line cervical stabilization for protection of the cervical spine was compared. METHODS: Thirty-three residents performed orotracheal intubation using ML and AWS in an intubation model with in-line cervical stabilization. The tracheal intubation success rate, time required for tracheal intubation, and number of trials of inserting the tracheal tube into the trachea were measured in individual residents. RESULTS: Two residents inserted the tube into the esophagus using ML (success rate: 93.9%), but all residents succeeded in tracheal intubation using AWS (success rate: 100%) (p = 0.492). The time required for intubation was similar using AWS and ML (15 seconds vs. 20 seconds, p = 0.261). The number of trials using AWS was significantly lower (2.0 times vs. 1.0 times, p = 0.001). CONCLUSION: The usefulness of AWS may be comparable with or greater than that of ML for oral intubation in trauma patients with in-line cervical stabilization.

Disaster Care: Public Health Emergencies and Children
John S. Murray
2009· AJN American Journal of Nursing11doi:10.1097/01.naj.0000365175.55331.a1

In Brief New guidelines offer an opportunity to be better prepared. Recent guidelines provide health care practitioners with the tools they need to create emergency care plans designed specifically for children.

Use of Computer-Assisted Instruction in Introductory Management Science
Janet Fowler
1983· The Journal of Experimental Education10doi:10.1080/00220973.1983.11011868

This study investigated the effects of computerassisted instruction on student problem-solving ability and student attitude toward computers and quantitative methods. This was done in conjunction with a traditional introductory management science course. Scores on a departmental group final and responses to pre- and post-course questionnaires were analyzed. The findings indicate that the use of computer-assisted instruction did affect student attitudes. The students who used the computer materials showed an overall increase in their appreciation of computers and quantitative methods. The students who did not use the computer-assisted instruction showed no overall change in their attitudes.

A Treatment of Multiple-Process Industries
J. Harvey Edmonston
1952· The Quarterly Journal of Economics10doi:10.2307/1882105

I. Introduction, 557. — II. Formulation, 560. — III. General comments, 568. — IV. Numerical example, 570.

Science and Technology (S&amp;T) Roadmap Collaboration between SMC, NASA, and Government Partners
Joseph Betser, Roberta M. Ewart, Faith Chandler
2016· AIAA SPACE 20166doi:10.2514/6.2016-5228

National Security Space (NSS) presents multi-faceted S and T challenges. We must continually innovate enterprise and information management; provide decision support; develop advanced materials; enhance sensor technology; transform communication technology; develop advanced propulsion and resilient space architectures and capabilities; and enhance multiple additional S and T domains. These challenges are best met by leveraging advanced S and T research and technology development from a number of DoD agencies and civil agencies such as NASA. The authors of this paper have engaged in these activities since 2006 and over the past decade developed multiple strategic S and T relationships. This paper highlights the Office of the Space Missile Systems Center (SMC) Chief Scientist (SMC/ST) collaboration with the NASA Office of Chief Technologist (NASA OCT), which has multiple S and T activities that are relevant to NSS. In particular we discuss the development of the Technology Roadmaps that benefit both Civil Space and NSS. Our collaboration with NASA OCT has been of mutual benefit to multiple participants. Some of the other DoD components include the Defense Advanced Research Projects agency (DARPA), Air Force Research Laboratory (AFRL), Naval Research Laboratory (NRL), The USAF Office of Chief Scientist, the USAF Science Advisory Board (SAB), Space and Naval Warfare Systems Command (SPAWAR), and a number of other services and agencies. In addition, the human talent is a key enabler of advanced S and T activities; it is absolutely critical to have a strong supply of talent in the fields of Science Technology, Engineering, and Mathematics (STEM). Consequently, we continually collaborate with the USAF Institute of Technology (AFIT), other service academies and graduate schools, and other universities and colleges. This paper highlights the benefits that result from such strategic S and T partnerships and recommends a way forward that will continually build upon these achievements into the future.

Effect of Whole-Body X-Radiation on Rat Intestine and Intestinal Nucleoprotein
Robert N. Feinstein, C. L. Butler
1952· Experimental Biology and Medicine6doi:10.3181/00379727-79-19313

SummaryAfter 800 r of whole body irradiation to rats, a nucleoprotein-rich fraction of the intestine is diminished in amount and also in its content of total phosphorus, total nitrogen, dry weight, and ash. The greatest loss of phosphorus is derived from the nucleic acid fraction. In addition, the weight of the intestine, as well as the viscosity of its alkaline solutions, is significantly decreased after whole body irradiation. These data are interpreted as substantiation of the idea that one effect of whole body irradiation is the degradation of nucleic acid.

Complex Modal Analysis of Rotating Systems
C. L. Kessler, Jay H. Kim
1999· SAE technical papers on CD-ROM/SAE technical paper series4doi:10.4271/1999-01-1835

&lt;div class="htmlview paragraph"&gt;The objective of this paper is to present the complex analysis method for the free vibration of general anisotropic rotors. The approach developed in this work represents the natural mode of the rotor as the sum of two sub-modes, one that rotates in the forward direction and the other in the backward direction. It is shown that the natural mode has to be described as such to satisfy the complex equation of motion of general rotor systems. Physical interpretation of results from the analysis of a model of the anti-symmetric motion of the rigid rotor shows that the complex mode contains modal directivity information as well as the conventional modal information. Proposed representation of the natural mode enables one to make clear definition of the forward mode and the backward mode, and more importantly enables one to complete the complex rotor analysis procedure.&lt;/div&gt;

Space Station Integrated Kinetic Launcher for Orbital Payload Systems (SSIKLOPS) - Cyclops
James Smith, C. R. Lamb, Perry G. Ballard
2013· NASA STI Repository (National Aeronautics and Space Administration)4

Access to space for satellites in the 50-100 kg class is a challenge for the small satellite community. Rideshare opportunities are limited and costly, and the small sat must adhere to the primary payloads schedule and launch needs. Launching as an auxiliary payload on an Expendable Launch Vehicle presents many technical, environmental, and logistical challenges to the small satellite community. To assist the community in mitigating these challenges and in order to provide the community with greater access to space for 50-100 kg satellites, the NASA International Space Station (ISS) and Engineering communities in collaboration with the Department of Defense (DOD) Space Test Program (STP) is developing a dedicated 50-100 kg class ISS small satellite deployment system. The system, known as Cyclops, will utilize NASA's ISS resupply vehicles to launch small sats to the ISS in a controlled pressurized environment in soft stow bags. The satellites will then be processed through the ISS pressurized environment by the astronaut crew allowing satellite system diagnostics prior to orbit insertion. Orbit insertion is achieved through use of the Japan Aerospace Exploration Agency's Experiment Module Robotic Airlock (JEM Airlock) and one of the ISS Robotic Arms. Cyclops' initial satellite deployment demonstration of DOD STP's SpinSat and UT/TAMU's Lonestar satellites will be toward the end of 2013 or beginning of 2014. Cyclops will be housed on-board the ISS and used throughout its lifetime. The anatomy of Cyclops, its concept of operations for satellite deployment, and its satellite interfaces and requirements will be addressed further in this paper.