Whitney topology and spaces of preference relations

The strong Whitney topology on the sets of maps of smooth manifolds induces a topology on the set of preferences in euclidean space. We prove that the obtained space is not connected which implies that there is no continuous social choice function defined on a finite power of this space. We also show that the obtained space is not normal.Whitney topology

Probability measure monad on the category of ultrametric spaces

[EN] The set of all probability measures with compact support on an ultrametric space can be endowed with a natural ultrametric. We show that the functor of probability measures with finite supports (respectively compact supports) forms a monad in the category of ultrametric spaces (respectively complete ultrametric spaces) and nonexpanding maps. It is also proven that the G-symmetric power functor has an extension onto the Kleisli category of the probability measure monad.Hubal, O.; Zarichnyi, M. (2008). Probability measure monad on the category of ultrametric spaces. Applied General Topology. 9(2):229-237. https://doi.org/10.4995/agt.2008.18032292379

A many-kind particle systems in the Boltzmann — Grad limit

секция: Интегро-дифференциальные операторы и уравнени

The Fokker-Planck Equation for the System "Brownian Particle in Thermostat" Based on the Presented Probability Approach

A one-dimensional system "Brownian particle in thermostat" is considered. The Fokker-Planck equation describing dynamics of the particle system under consideration is derived on the basis of the presented probability approach. The solution of the derived equation is also obtained

A one-dimensional discrete velocity model of the Cauchy problem for the BBGKY hierarchy of equations for many-kind particle systems

секция: Уравнения в частных производны

The Relationship Between Collision History and a Computerized Assessment of Visual and Cognitive Skills in a Sample of School Bus Drivers

The objective of this study was to explore whether measures of visual and cognitive performance in a safe computerized driving environment were associated with collision involvement and the cost of collisions in a sample of professional motor vehicle operators. One hundred and nine (109) school bus drivers in a large metropolitan area were asked to take a 15-minute interactive computer-based driving assessment. The skills included visual target identification, scanning in four directions, divided-attention, reaction time, steering smoothness, false positive responses, and evasive maneuvers. An overall score validated in previous research summarized each driver’s performance. Each driver’s collision history over the last three years was then compared to the driving assessment scores. Collision data included collision type, frequency, and damage cost associated with each incident. Drivers with collisions (n = 27) were compared to drivers with no collisions (n = 82). Drivers with collisions had significantly lower overall scanning and steering smoothness scores than drivers without collisions. Drivers with collisions also had significantly higher braking and target false-positive scores, indicating disorientation. The total cost of collisions for the lower 40th percentile test scores was $42,261, whereas the cost for the upper 60th percentile was$10,314. The results indicate that drivers who are prone to become disoriented and overwhelmed in a high-demand computerized assessment were more likely to have had collisions on the road. The relationship between collision cost/incidence and test scores suggests that a sufficiently complex and rapidly paced computerized assessment has utility in identifying drivers who would benefit from remedial training

The Structure of the Nomadic Discourse in Two Years in Paradise by Dr. Zainab Sateh

تعدُّ الرحلة الأدبية أدباً مكانياً بامتياز؛ لأنها تقوم على انتقال الكاتب "ارتحاله " من مكانه الأصلي إلى آخر مغاير تماماً بمستوياته البيئية والاجتماعية والثقافية فضلاً على العادات والتقاليد المتأصلة في المكانين، والمختلفة في بنيتها الثقافية، كذلك ترتكز الرحلة على مجموعة من العناصر المهمة تتمثلُ بالمقدمة التي يقوم الكاتب ببنائها سردياً على وفق المعايير والآليات الرحلية، وقد يرويها شخص آخر، كأن يكون صديقاً، وهناك المقدمة الغيرية التي تتميز بمدح الرحلة أو الرحالة وكلُّ ما يتعلق بها من مميزات شخصية، وهناك عناصر بنائية مهمة منها الشخصية وقد تكون رئيسة أو ثانوية، والزمكانية، والأحداث، وجميعها تتآزر في بناء النصّ الرحلي فضلاً عن عنصر الوصف الذي يعد ركناً مهماً في وصف الأماكن والأحداث والشخصيات التي تتفاعل فيما بينها لبناء النص، وتعد الدكتورة " زينب ساطع "من الأقلام النسوية التي خاضت في مجال الرحلة الأدبية على صعيد العراق، وقد كان لها أسلوبها السردي المتفرد في بناء نصها الرحلي، لذا كانت موضع اهتمام البحث ودراسته. The literary journey is a spatial literature par excellence. Because it is based on the writer moving his "travel" from his place of origin to another completely different with its environmental, social and cultural levels, as well as on the customs and traditions rooted in the two places, and different in their cultural structure. And the nomadic mechanisms, and another person may narrate them, such as being a friend, and there is the altruistic introduction that is characterized by praising the journey or the traveler and all that is related to him of personal characteristics, and there are important structural elements, including personality, which may be major or secondary, and temporal, and events All of them cooperate in building the nomadic text, in addition to the element of description, which is an important pillar in describing the places, events, and personalities that interact with each other to build the text. Unique in the construction of its nomadic text, so it was the subject of research and study

The Relationship Between Collision History and a Computerized Assessment of Visual and Cognitive Skills in a Sample of School Bus Drivers

The objective of this study was to explore whether measures of visual and cognitive performance in a safe computerized driving environment were associated with collision involvement and the cost of collisions in a sample of professional motor vehicle operators. One hundred and nine (109) school bus drivers in a large metropolitan area were asked to take a 15-minute interactive computer-based driving assessment. The skills included visual target identification, scanning in four directions, divided-attention, reaction time, steering smoothness, false positive responses, and evasive maneuvers. An overall score validated in previous research summarized each driver’s performance. Each driver’s collision history over the last three years was then compared to the driving assessment scores. Collision data included collision type, frequency, and damage cost associated with each incident. Drivers with collisions (n = 27) were compared to drivers with no collisions (n = 82). Drivers with collisions had significantly lower overall scanning and steering smoothness scores than drivers without collisions. Drivers with collisions also had significantly higher braking and target false-positive scores, indicating disorientation. The total cost of collisions for the lower 40th percentile test scores was $42,261, whereas the cost for the upper 60th percentile was$10,314. The results indicate that drivers who are prone to become disoriented and overwhelmed in a high-demand computerized assessment were more likely to have had collisions on the road. The relationship between collision cost/incidence and test scores suggests that a sufficiently complex and rapidly paced computerized assessment has utility in identifying drivers who would benefit from remedial training

Attitudes of pregnant women towards collection of biological specimens during pregnancy and at birth

Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/90568/1/j.1365-3016.2012.01265.x.pd

A mathematical description of a one-dimensional discrete velocity model of non-symmetric particle systems

Аналитическая теория дифференциальных уравнени