Flight Measurements of Flying Qualities of a P-47D-30 Airplane (AAF No. 43-3441) to Determine Longitudinal Stability and Control and Stalling Characteristics

Flight tests have been made to determine the longitudinal stability and control and stalling characteristics of the P-47.E-30 airplane. The teat results show the airplane to be unstable stick free in any power-on condition even at the most forward center-of-gravity position tested. At the rearward center-of-gravity position tested the airplane also had neutral to negative stick-fixed stability with power on. The characteristics in accelerated flight were acceptable at the forward center-of-gravity position at low and high altitudes except at high speed where the control-force variations with acceleration were high. At the rearward center-of-gravity position, elevator-force reversals were experienced in turns at low speeds, and the force per g was low at all the other speeds. Ample stall warning was afforded in all the conditions tested and the stalling characteristics were very satisfactory except in the approach and wave-off conditions

The GIS Professional Ethics Project: Practical Ethics Education for GIS Professionals

Teaching GIS involves teaching ethical and moral thinking as a distinct engagement with the use, applications, and responsibilities of GIS professionals. Over the past 20 years scholars (particularly those affiliated with the discipline of Geography) have contributed critiques of the instrumental nature of GIS as well as reflective case studies that seek to demonstrate how the technology can be used to promote social justice. During the same period a profession of GIS developed as governmental and private use of GIS burgeoned; a marker for the professionalization of GIS in the United States can be found in the observation that by mid-2009 over 4,500 individuals had earned certification as GIS professionals. Requirements for professional certification in the U.S. include practitioners’ commitment to adhere with a formal Code of Ethics and Rules of Conduct. Meanwhile, U.S. higher education institutions have rushed to develop practice-oriented certificate and degree programs in response to the increasing demand for qualified GIS professionals in industry and government. Professional programs differ from academic degree programs in that most are designed to produce practitioners rather than scholars. In general, the rich literature in GIS and Society and Critical GIS is more useful to students and instructors in academic programs than those in professional programs. The objective of the National Science Foundation-funded GIS Professional Ethics Project (http://gisprofessionalethics.org) we describe in this chapter is to provide pedagogical practice and resources for American students and academics. The project combines the perspectives and experience of GIS educators and applied ethicists. The project has produced open educational resources (especially formal case studies with explicit linkages to the Code and Rules) to help professional GIS higher education programs prepare current and future practitioners to recognize and engage ethical problems.This is an author's manuscript, as accepted by the publisher. The published chapter [14] is copyrighted by John Wiley & Sons, Inc

THE GIS PROFESSIONAL ETHICS PROJECT: PRACTICAL ETHICS EDUCATION FOR GIS PROS

Abstract GIS professors and GIS professionals are separate but overlapping populations, in the U.S. at least. Both communities care about the moral and ethical implications of geospatial technologies and practices. They tend to express their concerns in different ways, however. Over the past 20 years scholars (particularly those affiliated with the discipline of Geography) have contributed critiques of the instrumental nature of GIS as well as reflective case studies that seek to demonstrate how the technology can be used to promote social justice. During the same period a profession of GIS coalesced; by mid-2009 over 4,500 individuals had earned certification as GIS Professionals. Requirements for professional certification in the U.S. include practitioners' commitment to comply with a formal Code of Ethics and Rules of Conduct. Meanwhile, U.S. higher education institutions have rushed to develop practice-oriented certificate and degree programs in response to the increasing demand for qualified GIS professionals in industry and government. Professional programs differ from academic degree programs in that most are designed to produce practitioners rather than scholars. In general, the rich literature in GIS and Society and Critical GIS is more useful to students and instructors in academic programs than those in professional programs. The objective of the National Science Foundation-funded GIS Professional Ethics Project is to produce open educational resources (especially formal case studies with explicit linkages to the Code and Rules) that help professional programs prepare current and future practitioners to recognize ethical problems and to act with integrity. The project (http://gisprofessionalethics.org) combines the perspectives and experience of GIS educators and applied ethicists. The goal of this ICA paper is to promote widespread use of GIS-specific case studies and to invite international perspectives on applied ethics in the GIS profession

Mycobacterium tuberculosis Cluster with Developing Drug Resistance, New York, New York, USA, 2003–2009

In 2004, identification of patients infected with the same Mycobacterium tuberculosis strain in New York, New York, USA, resulted in an outbreak investigation. The investigation involved data collection and analysis, establishing links between patients, and forming transmission hypotheses. Fifty-four geographically clustered cases were identified during 2003–2009. Initially, the M. tuberculosis strain was drug susceptible. However, in 2006, isoniazid resistance emerged, resulting in isoniazid-resistant M. tuberculosis among 17 (31%) patients. Compared with patients with drug-susceptible M. tuberculosis, a greater proportion of patients with isoniazid-resistant M. tuberculosis were US born and had a history of illegal drug use. No patients named one another as contacts. We used patient photographs to identify links between patients. Three links were associated with drug use among patients infected with isoniazid-resistant M. tuberculosis. The photographic method would have been more successful if used earlier in the investigation. Name-based contact investigation might not identify all contacts, particularly when illegal drug use is involved

NACA Technical Notes

Report presenting flight tests to determine the lateral and directional stability and control characteristics of an F-47D-30 airplane. Results regarding the physical characteristics, static directional and lateral stability and control characteristics, dynamic directional stability and control characteristics, directional and lateral trim characteristics, and aileron control characteristics are provided

NACA Research Memorandums

"Flight tests have been made to determine the longitudinal stability and control and stalling characteristics of the P-47.E-30 airplane. The teat results show the airplane to be unstable stick free in any power-on condition even at the most forward center-of-gravity position tested. At the rearward center-of-gravity position tested the airplane also had neutral to negative stick-fixed stability with power on. The characteristics in accelerated flight were acceptable at the forward center-of-gravity position at low and high altitudes except at high speed where the control-force variations with acceleration were high" (p. 1)

NACA Technical Notes

Flight tests were made of the flying qualities of an F-47D-30 airplane to determine the longitudinal stability and control and stalling characteristics. The results indicated that the airplane was unstable with stick free in any power-on condition even at the most forward center-of-gravity position tested