Landing approach evaluation of an integrated CRT display for general aviation aircraft

A flight director adaptable to general aviation aircraft was evaluated for the landing approach task in a twin turbojet business aircraft. The flight director combined aircraft heading, pitch and roll atitude, and ILS (Instrument Landing System) signals into a single picture on a small cathode ray tube (CRT) to give the pilot an integrated picture of the aircraft situation. The display is unique in that it presents the information on a CRT and gives quasi-command signals to the pilot. The particular display investigated was a preproduction version of the Kaiser Model FP-50 flight director. Approaches made with visual references only, with a conventional ILS displacement instrument, and with the CRT display were compared in terms of tracking performance and pilot workload. Tracking performance of three research pilots using the CRT display was superior to that using the conventional ILS instrument and comparable to that under VFR conditions. Pilot workload (based on pilot comments) was not clearly decreased

History of the Virginia Teachers Association, 1940-1965

The major purpose of this study was to examine the Virginia Teachers Association as a force for educational change in Virginia. The study involved (1) an examination of the primary purposes of the association and their relationship to its educational goals and programs, (2) a review of the forces that generated educational change in Virginia during the period 1940-1965, (3) a survey of the contributions of two of the organization\u27s most influential leaders, and (4) an examination of the process involved in merging Virginia\u27s black and white teachers associations. The historical method of research was utilized in this study.;On the basis of the findings of this study, the following conclusions seemed to be warranted: (1) The primary goals and purposes of the Virginia Teachers Association as well as the program which it projected were of such depth and quality during the period covered in this study that the organization was able to survive and grow. (2) Black educators used effectively the political and social mood of the 1930\u27s and 1940\u27s to build a network of self-help organizations and through these mechanisms contributed significantly to changing the attitudes of the members of the social and political power structure of Virginia. (3) Through the leadership of many members of the Virginia Teachers Association but specifically as a result of the leadership of Lutrelle F. Palmer and J. Rupert Picott the Association made a lasting contribution to the professionalization of Virginia\u27s teachers by the elimination of discriminatory practices in public education. (4) The Virginia Teachers Associal seized the initiative in bringing about the merger of the VTA and the Virginia Education Association and thus gave Virginia a single professional organization of educators.;Upon the basis of this research, the following recommendations are made. (1) Many assure that most of the problems of discrimination and separation that affected educators prior to the period of desegregation and the ultimate merging of the dual teachers associations have been solved. A study is needed to ascertain the degree of real progress in human relations that has been realized since Virginia has had a single professional organization of educators. (2) The Philosophy and major activities of the merged VTA-VEA projects an identity that is different from either of the former organizations. What makes the current organization a different entity? Further study is necessary to determine the conditions that caused the new directions of the merged organization to develop. Also, to what extent have some of the primary attributes of each of the former organizations (VTA and VEA) been preserved? Finally, to what extent have the changes in emphasis and impact of the Association resulted from factors not directly associated with education or the professional development of educators in either of the former organizations. What makes the current organization a different entity? Further study is necessary to determine the conditions that caused the new directions of the merged organization to develop. Also, to what extent have the strengths of the two original organizations been retained? Finally, to what extent have the changes in emphasis and impact of the Association resulted from factors not directly associated with education or the professional development of educators. (3) The records, official documents and working papers and the VTA are scattered and housed in the archives of several institutions. For the purpose of conducting further research, in connection with the former teachers association, these records should be collected, organized and housed in a single location preferable the VEA headquarters in Richmond, Virginia. (4) This study reveals the tremendous impact of the educational and cultural improvement of the entire black community in Virginia

Sex differences in science achievement in grades five and seven

Thesis (Ed.M.)--Boston University This item was digitized by the Internet Archive

The carbon abundance in two h 2 regions of the small Megallanic Cloud

Observations of the ultraviolet spectra of two locations in the H II region NGC 346 and of the entire H II region IC 1644 in the Small Magellanic Cloud (SMC) were made using the International Ultraviolet Explorer (IUE) satellite. The abundance of carbon in the nebulae was derived using theoretical model analysis combined with ground-based spectrophotometry of other emission lines. The abundance of C relative to H in the SMC was found to be lower by -0.9 dex compared with the Sun and lower by -0.8 dex compared with the Orion Nebula. This C deficiency is similar to that of O, Ne, S, and Ar in the SMC, but not as great as found for N. The sites and history of C nucleosynthesis in galaxies is similar to that of O, Ne, S, and Ar, in contrast to that of N, which appears to be more complex, perhaps because of a mixture of secondary primary sources or a significant contribution from intermediate-mass long-lived stars

Prosecuting Members of the U.S. Military for Wartime Environmental Crimes

War is inherently damaging to the environment. Though these deleterious actions are often attributed to states during times of armed conflict, they are normally the result of military operations conducted by members of the military who are carrying out orders from military superiors. While many have proposed systemic changes that affect how states can or should be held responsible, few have commented on the process of holding individual military personnel or commanders responsible for battlefield acts of environmental damage. This paper argues that there are sufficient laws and regulations in place to hold individuals and commanders in the United States military responsible for illegal environmental damage during wartime. Further, these laws and regulations provide sufficient penalties and other enforcement mechanisms to deter potential violators, punish convicted criminals, and protect the environment

Prosecuting Members of the U.S. Military for Wartime Environmental Crimes

War is inherently damaging to the environment. Though these deleterious actions are often attributed to states during times of armed conflict, they are normally the result of military operations conducted by members of the military who are carrying out orders from military superiors. While many have proposed systemic changes that affect how states can or should be held responsible, few have commented on the process of holding individual military personnel or commanders responsible for battlefield acts of environmental damage. This paper argues that there are sufficient laws and regulations in place to hold individuals and commanders in the United States military responsible for illegal environmental damage during wartime. Further, these laws and regulations provide sufficient penalties and other enforcement mechanisms to deter potential violators, punish convicted criminals, and protect the environment

Double precision trajectory program /DPTRAJ 2.2C/

Four part program computes trajectory of space probe moving in solar system and subject to variety of forces

Solar Models of Low Neutrino-Counting Rate: The Central Black Hole

Partial evolutionary sequences have been calculated for several solar models with central black holes of the order of one hundred-thousandth of a solar mass. If these are assumed to radiate their Eddington-limiting luminosity, the central temperature is depressed to the extent that the predicted count rate for the Cl-36 solar neutrino experiment nears the current upper limit of 1 SNU. This occurs when the auxiliary energy source provides about half of the solar luminosity. Count rates below this limit would result from an even larger black-hole luminosity. Consequences for stellar evolution of the occasional presence of black holes inside normal stars are discussed