The future world-wide installation of the newly developed Microwave Landing System (MLS) will permit a four-dimensional (incl. time) guidance of aircraft in the airport area with the combined advantages of safer, more...
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The future world-wide installation of the newly developed Microwave Landing System (MLS) will permit a four-dimensional (incl. time) guidance of aircraft in the airport area with the combined advantages of safer, more economical flight paths with less detrimental environmental impact such as noise nuisance. Purpose of this paper is to demonstrate that the introduction of these advanced navigation and flight guidance technologies will make it possible to compute and to apply continuously time-dependent command inputs for an aircraft in a way which will minimize the noise annoyance for the population living in the neighborhood of the airport. Factors considered in the investigations for the optimization calculations included not only the location and population density of living areas along the approach trajectory but also the effects of temperature and wind gradients on noise propagation. The results obtained for the Airport Düsseldorf-Lohausen show that, even taking into account numerous design, comfort, and safety constraints, the noise exposure for the average airport area inhabitant could be reduced by 70 % if the proposed flight trajectory management procedure would be applied.
Neurite outgrowth is guided by narrow pathways of bioactive laminin. These pathways are created by UV light irradiation of laminin-coated coverslips masked with EM grids. Patterned outgrowth of neurites is independent...
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Neurite outgrowth is guided by narrow pathways of bioactive laminin. These pathways are created by UV light irradiation of laminin-coated coverslips masked with EM grids. Patterned outgrowth of neurites is independent of gross mechanical guidance and guidance caused by substrate limitation. Cells [chicken embryonic] on unirradiated laminin are less readily displaced by shear forces than cells on irradiated laminin. UV light alters the adhesive properties of laminin and that differential cell-substratum adhesion may guide extending neurites on the purified naturally occurring substance, laminin.
This investigation provided a comparative analysis of results of follow-up studies of graduates of doctoral programs at Ohio State and Michigan State universities. The same questionnaire survey and similar sampling pr...
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This investigation provided a comparative analysis of results of follow-up studies of graduates of doctoral programs at Ohio State and Michigan State universities. The same questionnaire survey and similar sampling procedures were used in both settings. The survey considered alumni perceptions of guidance committee activities, course work, comprehensive examinations, and dissertations. Most findings were consistent across both institutions (e.g., about one-fifth of the graduates from both universities wish they had taken more course work in research methodology). However, some striking contrasts were also found (e.g., the proportion of graduates who published articles based on their dissertations was 40% at one university and 23% at the other). The report offers recommendations for doctoral guidance committees suggested by the findings.
The ‘lifetime employment system’ in Japan offers employees a high degree of job security. The characteristics, foundations, extent and effects of the system are examined, as are some present strains upon it. The sys...
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The ‘lifetime employment system’ in Japan offers employees a high degree of job security. The characteristics, foundations, extent and effects of the system are examined, as are some present strains upon it. The system's implications for education and for careers guidance in Japan are then explored. The structure of guidance services in schools, in employment offices, in universities and colleges, and for adults, are described, and are related both to the lifetime employment system and to other features of Japanese society.
Presents results of a national survey of the counseling and guidance staff (N=45) and its functions within state departments of education throughout the United States and four territories during the past decade. Resul...
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Presents results of a national survey of the counseling and guidance staff (N=45) and its functions within state departments of education throughout the United States and four territories during the past decade. Results indicated economic changes and imply further diversification of services with fewer staff members. (BH)
A stochastic pursuit-evasion differential game involving two players, E and P, moving in the plane is considered. It is assumed that player E (the evader) has complete observation of the position and velocity of playe...
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A stochastic pursuit-evasion differential game involving two players, E and P, moving in the plane is considered. It is assumed that player E (the evader) has complete observation of the position and velocity of player P, whereas player P (the pursuer) can measure the distanced (P, E) between P and E but receives noise-corrupted measurements of the bearing β of E from P. Three cases are dealt with: (a) using the noise-corrupted measurements of β, player P applies the proportional navigation guidance law; (b) P has complete observation ofd (P, E) and β (this case is treated for the sake of completeness); (c) using the noise-corrupted measurements of β, P applies an erroneous line-of sight guidance law. For each of the cases, sufficient conditions on optimal strategies are derived. In each of the cases, these conditions require the solution of a nonlinear partial differential equation on a in ?2. Finally, optimal strategies are computed by solving the corresponding equations numerically.
The impact of the family on the vocational development of youth is critically and systematically examined in this paper. First, the relevant empirical and theoretical literature is identified together with the limitat...
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The impact of the family on the vocational development of youth is critically and systematically examined in this paper. First, the relevant empirical and theoretical literature is identified together with the limitations of that literature, particularly with its failure to consider, a) the ecological influences on career development, b) female career development, and c) the developmental aspects of career choice, entry and maintenance. Second, the paper examines the following family variables in career development; socio-economic status, family process variables, socialization and sex differences, family interactions and family structure. Finally, some implications for guidance and counselling following an individual/environmental perspective are identified.
In response to your September 1984 request, we have reviewed Department of Defense DOD and service adherence to national TEMPEST policy. TEMPEST refers to technical investigations and studies of compromising emanation...
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In response to your September 1984 request, we have reviewed Department of Defense DOD and service adherence to national TEMPEST policy. TEMPEST refers to technical investigations and studies of compromising emanations from electronic information-processing equipment. Compromising emanations are unintentional intelligence-bearing signals which, if intercepted and analyzed, disclose classified information. National policy instructs federal agencies to protect classified information against such emanations. TEMPEST countermeasures-such as metal shielding, special wiring, and special equipment- are costly to implement. Total TEMPEST costs within DOD are unknown however, they are estimated at hundreds of millions of dollars annually.
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