Effects of modes of cockpit automation on pilot performance and workload in a next generation flight concept of operation

The objective of this study was to compare the effects of various forms of advanced cockpit automation for flight planning on pilot performance and workload under a futuristic concept of operation. A lab experiment was conducted in which airline pilots flew simulated tailored arrivals to an airport using three modes of automation (MOAs), including a control‐display unit (CDU) to the aircraft flight management system, an enhanced CDU (CDU+), and a continuous descent approach (CDA) tool. The arrival scenario required replanning to avoid convective activity and was constrained by a minimum fuel requirement at the initial approach fix. The CDU and CDU+ modes allowed for point‐by‐point path planning or selection among multiple standard arrivals, respectively. The CDA mode completely automated the route replanning for pilots. It was expected that the higher‐level automation would significantly reduce pilot workload and improve overall flight performance. In general, results indicated that the MOAs influenced pilot performance and workload responses according to hypotheses. This study provides new knowledge about the relationship of cockpit automation and interface features with pilot performance and workload in a novel next generation–style flight concept of operation. © 2012 Wiley Periodicals, Inc.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/92410/1/20377_ftp.pd

Nationalism and Attitudes towards Immigration: A comparison on ethnic and civic nationalism and the impact on attitudes towards immigrants.

Immigration has been an important topic throughout America’s history. Studies have linked nationalism to attitudes towards immigrants, and literature has repeatedly distinguished different types of nationalism. This study looks at measures of two different types of nationalism (civic and ethnic nationalism) and tests the measures on the impact of attitudes towards immigrants. It was predicted civic and ethnic nationalism would both be predictive of negative attitudes towards immigrants, but that measures of ethnic nationalism would have greater predictive value than measures of civic nationalism. Data was used from the 2014 General Social Survey, with analysis being run using SPSS. Findings supported the hypothesis that ethnic measures of nationalism was more predictive of negative attitudes towards immigrants, but due to the small set of measures of civic nationalism, findings are supportive of the first hypothesis but require further research

Clay and Clay Minerals: A Detailed Review

In this study, we focused on the presentation of clay minerals, their conditions of formation and their different categories. We also reported the importance of purification in removing impurities and the responses induced by heat treatment of these minerals. Techniques used to detect clay minerals are also exposed. On the other hand, the mineralogical, physicochemical and thermal properties have a direct impact on the field of use of these minerals. These properties differ from one mineral to another, depending on the structure and chemical composition. Moreover, the remarkable properties of smectites make these minerals the most preferred for the industry and also in the environmental field. Due to their brilliant firing properties, illites are suitable for the construction industry. Moreover, the purification by acids (acetic acid and HCl) allows the removal of most associated minerals, and thus a secure access to the clays' characteristics and a very strong sensitization even to the small variation. Finally, the ethylene glycol (EG) swelling test only affects the basal distance of smectites, increasing this distance to 17 Å, but heating to 500°C destroys kaolinite, and closes the basal distance of smectites and vermiculites to 10 Å. Illites and chlorites show no response to these two treatments (EG, heating to 500°C)

Ill-Conditioning versus Ill-Posedness for the Boundary Controllability of the Heat Equation

Accepted for publications in Journal of Inverse and Ill posed problesmIll-posedness and/or Ill-conditioning are features users have to deal with appropriately in the controllability of diffusion problems for secure and reliable outputs. We investigate those issues in the case of a boundary Dirichlet control, in an attempt to underline the origin of the troubles arising in the numerical computations and to shed some light on the difficulties to obtain good quality simulations. The exact controllability is severely ill-posed while, in spite of its well-posedness, the null-controllability turns out to be very badly ill-conditioned. Theoretical and numerical results are stated on the heat equation in one dimension to illustrate the specific instabilities of each problem. The main tools used here are first a characterization of the subspace where the HUM control lies and the study of the spectrum of some structured matrices, of Pick and Löwner type, obtained from the Fourier calculations on the state and adjoint equations

Improvement of the Intelligent Tutor by Identifying the Face of the E-Learner's

As part of our project which aims at the realization of a system named ASTEMOI. In this article, we display a new and productive facial image representation based on the Local Sensitive Hash (LSH). This technique makes it possible to recognize the learners who follow their training in our learning platform. Once recognized, the student must be oriented towards an appropriate profile that takes into account his strengths and weaknesses. We also use a light processing module on the client device with a compact code so that we don’t need a lot of bandwidth, a lot of network transmission capacity to send the feature over the network, and to be able to index many pictures in a huge database in the cloud

Adsorption of the Polymer on a Clay Matrix : Theoretical Study

Adsorption of polymers is a phenomenon of great importance in a number of areas of our daily life. However, understanding this phenomenon is essential. In the present work, we are interested in the theoretical study of the adsorption phenomenon of the polymer on the sheets of a clay matrix. We have presented the different adsorption regimes encountered as well as the expressions of the surface coverage rate as a function of the volume fraction of monomer for each case. A strong adsorption was noted for the first two regimes (diluted on the surface, and semi-diluted two-dimensional on the surface) confirmed by the exponential term, and when the surface is saturated we meet the plateau regime for which the adsorption varies so logarithmic due to the occupation of most of the sites available on the surface of the clay. Finally, we presented the variation of the volume fraction as a function of z (axis perpendicular to the surface), which helps to estimate the thickness of the layer adsorbed on the surface

Hidrogeología regional de la cuenca del río Tajuña : (provincias de Madrid y Guadalajara)

Tesis Univ. Complutense de Madrid.Fac. de Ciencias GeológicasTRUEProQuestpu

Hidrogeología regional de la cuenca del río Tajuña : (provincias de Madrid y Guadalajara)

Tesis Univ. Complutense de Madrid.Fac. de Ciencias GeológicasTRUEProQuestpu