Military Academy

About: Military Academy is a based out in . It is known for research contribution in the topics: Population & Context (language use). The organization has 2478 authors who have published 3003 publications receiving 33188 citations.

Geometric control of quantum spin systems

Abstract: Recent papers by Khaneja, Brockett and Glaser obtained efficient RF pulse trains for two-spin and three-spin NMR systems by finding sub-Riemannian geodesics on a quotient space of SU(4). This paper outlines a method for extending their results via the Griffiths formalism for constrained variational problems.

Effects of Mining Activities on Gerbillus nanus in Saudi Arabia: A Biochemical and Histological Study.

Abstract: Mining can impact the environment, biodiversity, and human health through direct and indirect practices. This study investigated the effects of gold mining on Gerbillus nanus, in relation to organ dysfunction and redox imbalance. Soil samples, Lycium shawii, and G. nanus were collected from a site near a mining plant, and a control site. Soil and L. shawii samples from the mining site showed significantly higher cadmium (Cd), copper (Cu), mercury (Hg), arsenic (As), zinc (Zn), lead (Pb), and vanadium (V) levels. Hepatic, renal, and pulmonary Cd, Pb, Hg, Zn, Cu, Fe, As, and V concentrations were significantly higher in G. nanus from the mining site. Markers of liver and kidney function were elevated in serum, and several histological manifestations were observed in the liver, kidney, and lung of G. nanus from the mining site. Malondialdehyde and nitric oxide levels increased, and glutathione and antioxidant enzymes decreased in the liver and kidney of G. nanus. In conclusion, mining practices trigger tissue damage and oxidative stress in G. nanus that live close to the mining site. These findings can represent a scientific basis for evaluating the environmental and health impacts of mining on nearby communities.

Analysis of Material Punching Including a Rotational Speed of the Projectile

Abstract: Materials used for the construction of ballistic shields are characterized by a variety of behaviours under the influence of external loads. Ballistic impact (by a bullet) in armour (ballistic shield) is an example of the phenomena that could be considered in the category of a dynamic load caused by the strike of the mass. Computer simulations are commonly used in such situations. It is especially important to adopt a proper model of the behaviour of the material. This paper presents the results obtained by simulating free 3D points and using the application developed by the authors for the purpose of this research. The made calculations include the translational motion and rotary motion of the projectile as well as the stiffness of the material, the damping of the material, friction at the points of contacting surfaces, viscous friction and plastic deformation (the material beyond the plastic yield point is perfectly plastic). The results of simulations were validated with experimental research.

Accounting consolidation of the balance by the acquisition method

Abstract: The emergence and need for making the consolidated calculations is a significant issue in a modern financial reporting. For the consolidation needs is important to determine theoretically a group of enterprises, in its narrower and broader sense, and connections among enterprises within a group. Adducting a collective balance weakness is necessary to point out to a necessity of the following elements elimination: internal share in capital and the capital, internal receivables and liabilities, internal inter-results and internal incomes and expenditures. The main part of the paper refers to a method of subsidiary companies′ capital consolidation, by the acquisition method. Harmonized with the IFRS 3 Business Combinations were defined and also analysed the basic requirements for conduction of the acquisition method. There were also analysed the examples which refer to an initial consolidation and the consolidation termination.