Finding the source of an accidental or deliberate release of a toxic substance into the atmosphere is of great importance for national security. The paper presents a search algorithm for turbulent environments which falls into the class of cognitive (infotaxi) algorithms. Bayesian estimation of the source parameter vector is carried out using the Rao-Blackwell dimension-reduction method, while ...

The educational process requires learning methods, strategies, the use of appropriate media and technological models, so as to create a pleasant atmosphere in all subjects arouse spirit learning. To more lively atmosphere, teachers must be able make classroom enjoyable. choice approach is an alternative that can taken. contextual teaching concept helps teacher relate material he teaches student...

the quality of pressure distribution over the atmosphere of the sea level and geopotential altitude at different atmosphere layers affect on many climate and meteorology phenomena of the earth surface. one of the important meteorology phenomenon is the occurrence of frost phenomenon especially late spring frost. in this surrey, occurring late spring frost days and minimum temperature during the...

The prooles of H in a number of cool Ap stars are anomalous. Broad wings, indicative of temperatures in the range 7000-8000K end abruptly in narrow cores. The widths of these cores are compatible with those of dwarfs with temperatures of 6000K or lower. This pro-le has been known for Przybylski's star, but it is seen in other cool Ap's. The H proole in several of these stars shows a similar cor...

In this research, the high-energy planetary mill was employed to produce nanocrystalline Ti-50Al(γ)(at%) powders. Initial powders were mechanically alloyed in 99.9999% and 90% purities of Argon and also Air atmosphere with alloying times up to 50h. The effect of impurity of Argon atmosphere on the microstructure and the rate of phase transformation of Ti-50Al were investigated during mechanical...

BACKGROUND Hyperbaric oxygen (HBO) and Ginkgo biloba extract (e.g., EGB 761) were shown to ameliorate cognitive and memory impairment in Alzheimer's disease (AD). However, the exact mechanism remains elusive. The aim of the present study was to investigate the possible mechanisms of HBO and EGB 761 via the function of nuclear factor kappa-B (NF-κB) pathway. METHODS AD rats were induced by inj...

Cognitive disorders among elderly patients decrease the quality of life for them and their family. Although certain methods and techniques of support provided to this group are being developed and described in the subject literature, nevertheless, there are still many open issues. The Vygotsky-Luria system is one of the models which makes it possible to reorganize activity and develop certain s...

As online retailers seek to attract customers through innovative electronic storefront designs, some are experimenting with three-dimensional (3D) websites. This study examines the influence of website dimensionality on cognitive absorption, perceived ease of use, and, indirectly, perceived website usefulness and intentions to buy online using the website. Findings indicate that shopping websit...

global warming is one of the major concerns in environmental issues. its effects are being exposed faster than anticipated recently. it causes adverse ecological and socioeconomical effects. the 4th assessment report issued by the u. n.’s intergovernmental panel on climate change (ipcc) states that it is appropriate to define global warming was caused by greenhouse gases due to human activities...