Number 1. (in 1 part) September 05, 2013

Abstract:
Experimental research of steels, used in nuclear industry is conducted by the method of positron annihilation spectroscopy (Method of Temporal Distribution of Annihilation Photons). The experimental data process and their comparison with literary data enabled to detect vacancy defects, including the ones, induced by neutron irradiation and determine their sizes.

URL: http://ejournal4.com/journals_n/1378356524.pdf
Number of views: 2652      Download in PDF

Abstract:
The article considers the aspects of power facilities on the basis of renewable energy resources with the use of electro-chemical systems with hydrogen store for energy accumulation. It was shown that energy storage in the form of hydrogen – high-efficiency energy source is considerably superior in capacity to traditional accumulator batteries and enables to smooth both daily and seasonal voltage variation from renewable energy resources.

URL: http://ejournal4.com/journals_n/1378355678.pdf
Number of views: 2661      Download in PDF

Abstract:
The article discusses an urgent task for the development of decentralized power in the Russian Federation – the design and development of high-speed non-contact magneto-electric generators for microturbine systems for biogas. On the basis of the equations of Arnold and equations that characterize the mechanical strength of the rotor, designed the expression reflecting the dependence of the power of high-speed non-contact magneto generator on the speed of its rotor, adjusting the air gap. Designed expression can be used for the design of electrical machines in its class, and as a single-purpose or multi-purpose optimization function. The effect of thickness of the high-coercivity permanent magnets in the rotor to the power of high-speed non-contact magneto generator varies with the frequency of rotation.

URL: http://ejournal4.com/journals_n/1378355760.pdf
Number of views: 2478      Download in PDF

Abstract:
Wave transformation in the areas of submarine canyons through their reflections on slopes is considered. As shown by field observations, including the destruction of the protective breakwater sections of the port of Imeretinskiy, and laboratory tests, the height of the waves on the windward edge of the parapet of submarine canyons in oblique approach of waves can be increased by 30–50 % compared with the waves outside the canyons. A mathematical model describing these effects and can simulate the excitement of the field in the areas of submarine canyons.

URL: http://ejournal4.com/journals_n/1378355839.pdf
Number of views: 2578      Download in PDF

Abstract:
The mathematical model of transformation of waves and dynamics of pebble beaches on artificial island complexes is offered. Results of hydraulic modeling of dynamics of a pebble beach on the artificial island on the Southern coast of the Crimea near the cape Fiolent are given. The mathematical model is calibrated according to experiments and it is offered for optimization of beach protection constructions at design of island beaches.

URL: http://ejournal4.com/journals_n/1378355964.pdf
Number of views: 2475      Download in PDF

Abstract:
It should be pointed out that indoor climates in buildings is significant to the accomplishment of a building not only in making it comfortable, but also in deciding its energy consumption holistically and the thermal comfort of the occupants in the building. Thermal comfort can be defined as a psychological state of mind, often expressing a sensation of considerable heat or cold and it occurs when there is a balanced exchange of heat between a person’s body and the environment, marked by the absence of regulatory sweating. Thermal comfort is imperative in both psychological and physical aspect where it could affects morale of the people. Based on their degree of thermal comfort, residents may complain, productivity may suffer and in some situations, people may refuse to work in a particular environment. This paper will discuss thoroughly the concept of thermal comfort, effects of thermal condition on occupants and some of the significant factors that influencing thermal comfort. In addition, thermal transition between the external environment and internal spaces of the buildings, human body interaction with surroundings and effective comfort range will also be presented to get a clear picture on how thermal comfort affects the building occupants comprehensively.

URL: http://ejournal4.com/journals_n/1378356078.pdf
Number of views: 2580      Download in PDF

Abstract:
The article describes the methods for estimating the specific characteristics of objects and systems that is called complexity. The article describes the "dogma of dimensionality" as a method to eliminate or reduce complexity. The article describes the kinds of difficulty. The article reveals the causes of difficulty. The article argues that the complexity is a correlate. The article describes the internal and external factors of complexity. The article describes the main evaluation methods of complexity.

URL: http://ejournal4.com/journals_n/1378356159.pdf
Number of views: 2376      Download in PDF

Abstract:
A new feature selection algorithm for solving classification problems is proposed. The algorithm exploits the ensemble-based methodology and iteratively combines classifiers in order to assign weights to features characterizing their importance in classification. The algorithm is based on the joint use of a filter method and the well known support vector machine. Moreover, the filter method uses only support vectors instead of the total training set to calculate the feature weights. Numerical experiments with publicly available data sets show that the proposed algorithm improves the classification accuracy.

URL: http://ejournal4.com/journals_n/1378356248.pdf
Number of views: 2790      Download in PDF

URL: http://ejournal4.com/journals_n/1378356311.pdf
Number of views: 2805      Download in PDF