Some system considerations in configuring a digital flight control - navigation system

A trade study was conducted with the objective of providing a technical guideline for selection of the most appropriate computer technology for the automatic flight control system of a civil subsonic jet transport. The trade study considers aspects of using either an analog, incremental type special purpose computer or a general purpose computer to perform critical autopilot computation functions. It also considers aspects of integration of noncritical autopilot and autothrottle modes into the computer performing the critical autoland functions, as compared to the federation of the noncritical modes into either a separate computer or with a R-Nav computer. The study is accomplished by establishing the relative advantages and/or risks associated with each of the computer configurations

Personality Characteristics and Labour Market Entry an exploration

In an explorative study, the value of four personality constructs in predicting success in the labour market entry has been analysed with a sample of graduates in economics from Maastricht University. The research question is: do personality characteristics predict labour market entry success and how much weight do these ‘soft’ factors have compared to the traditional ‘hard’ human capital factors like study results? Two out of the four constructs, i.e. (internal) Locus of control and Type A behaviour appear to have a positive effect on labour market success. The effects are independent of the effects of study results and other traditional human capital variables. Locus of control affects getting a job soon after graduation and having tenure, whereas Type A behaviour affects having tenure and wages. Study results merely affect job quality indicators. For obtaining an academic job, the human capital factors have a positive effect while personality has no effect at all. The findings underline the relevance of further labour market research with respect to the importance and role of the so called ‘soft’ factors like personality characteristics. At the same time, the role of ‘hard’ human capital factors is not to be neglected. Both types of factors seem to have their own and independent effects. Future research directions are given and implications of the study are discussed.labour market entry;

Application of the techniques for evaluating the acoustic sources of background noise in wind tunnel facilities

Techniques for evaluating acoustic sources of background noise in wind tunnel

Pseudo-open functions are monotonic decreasing for ordinal and cardinal invariants

AbstractA new property of pseudo-open functions is presented in this paper. Pseudo-open functions are monotonic decreasing with respect to ordinal and cardinal invariants defined by compact and sequential closures. A weak form of continuity, called k-continuous, is defined, characterized and used in the proof of the monotonicity properties of pseudo-open mappings. The relationships between the classes of k-continuous and sequentially continuous mappings in the category of all topological spaces and the continuous mappings in the subcategories of k-spaces and sequential spaces are presented

Land Subdivision, Heterogeneity, and Declining Food Security for African Pastoralists

Pastoral livestock inhabit landscapes that are spatially heterogeneous and have forage patches that pulse in their value to animals. Mobile pastoralists have evolved movement patterns to maximize use of these ephemeral food sources. In pastoral communities across Africa, changes in land tenure policy and socioeconomic pressures have caused pastoralists to decrease their mobility. Pastoralists recognize that shrinking access to land reduces their options to find forage, and theory suggests that the capacity of land to support herbivores decreases as a power of the square root of area accessible. We used ecosystem modelling in South Africa and Kenya to quantify declines in the number of livestock that can be supported under subdivision

The Implications of Galaxy Formation Models for the TeV Observations of Current Detectors

This paper represents a step toward constraining galaxy formation models via TeV gamm a ray observations. We use semi-analytic models of galaxy formation to predict a spectral distribution for the intergalactic infrared photon field, which in turn yields information about the absorption of TeV gamma rays from extra-galactic sources. By making predictions for integral flux observations at >200 GeV for several known EGRE T sources, we directly compare our models with current observational upper limits obtained by Whipple. In addition, our predictions may offer a guide to the observing programs for the current population of TeV gamma ray observatories.Comment: 6 pages, 11 figures, to appear in the proceedings of the 6th TeV Workshop at Snowbird, U