Subjective entropy maximum principle for preferences functions of alternatives given in the view of logical conditions

In the article the task of finding the optimal combination of objective functions given in the view of a logical conditional system of equations is considered. It is modeled the behavior of an active system controlled by the intellectual (active) element. The principle of the subjective entropy maximum is applied for obtaining the canonical distribution of the individual’s preferences as the solution to the problem for the conditional extremum.У статті розглядається задача відшукання оптимальної комбінації цільових функцій, заданих у вигляді логічної умовної системи рівнянь. Моделюється поведінка активної системи, керованої інтелектуальним (активним) елементом. Принцип максимуму суб’єктивної ентропії застосовується для отримання канонічного розподілу індивідуальних переваг у якості розв’язка задачі на умовний екстремум.В статье рассматривается задача отыскания оптимальной комбинации целевых функций, заданных в виде логической условной системы уравнений. Моделируется поведение активной системы, управляемой интеллектуальным (активным) элементом. Принцип максимума субъективной энтропии применяется для получения канонического распределения индивидуальных предпочтений в качестве решения задачи на условный экстремум

Quasideterminant solutions of a non-Abelian Toda lattice and kink solutions of a matrix sine-Gordon equation

Two families of solutions of a generalized non-Abelian Toda lattice are considered. These solutions are expressed in terms of quasideterminants, constructed by means of Darboux and binary Darboux transformations. As an example of the application of these solutions, we consider the 2-periodic reduction to a matrix sine-Gordon equation. In particular, we investigate the interaction properties of polarized kink solutions.Comment: 14 pages; 4 picture

Energy Supply System for Industrial Poultry Houses

The gas engine driven carbon dioxide heat pump designed for providing the heat, cold and electricity for industrial poultry house is proposed. The scheme differs from the known by using recuperative heat exchanger installed between the exhaust air duct of poultry house and heat pump evaporator and the heat curtain installed on the air duct after the evaporator. The air coming into the poultry house after the regenerative heat exchanger is supplied to the heat pump gas cooler. The heat pump produces heat of the required parameters of the input air and water for watering of poultry, space heating, etc. Heat pump compressor is driven by gas engine (GPA), by natural gas or biogas. The part of the gas-piston engine heat is used for adjusting the optimal heat pump mode and for regeneration of the absorbent in an evaporative cooler. The proposed technical solution of the above scheme provides a higher COP of the heat pump. Installing of heat curtain does not require the use of non-freezing solution to prevent icing of the air outlet of heat pump evaporator. The latter allows producing, besides electric power and heat, still cold (with the use off the adsorption-refrigerating machine) and provide drying air inlet evaporative cooler (if necessary)

Low-Temperature Evaporative Air Coolers. Development and Analysis of Opportunities

The purpose of the study is to develop and conduct a cycle of theoretical and experimental studies of low-temperature evaporative air coolers. The developed circuit solutions of the coolers ensure the reduction of the evaporative cooling limit from the temperature of the wet thermometer to the dew point temperature of the incoming air flow. The analysis of the fundamental capabilities of low-temperature air coolers are made taking into account modern solutions (patents) and publications in leading foreign scientific journals. The scientific novelty of the research consists in analyzing of the state of the air flow within the nozzle of the evaporative cooler. The authors conducted studies taking into account the danger of “recondensation” of the processes of joint heat and mass transfer in an indirect type evaporative air cooler - a chiller, which provides an opportunity to analyze the state of the main and auxiliary air flows in the evaporative air cooler depending on the ratio of gas and liquid flows and initial parameters (temperature and moisture content) of the external air. A series of experimental studies of hydrodynamic processes and joint heat and mass transfer is developed. The goal of reducing the limit of evaporative cooling had been achieved by using of air coolers - chillers ensures the achievement of comfort parameters of air in an air conditioning system without using traditional vapor compression technology. This goal had been achieved by using a portion of chilled water to pre-cool the incoming air stream with its constant moisture content

First study of radiation hardness of lead tungstate crystals at low temperatures

The electromagnetic calorimeter of PANDA at the FAIR facility will rely on an operation of lead tungstate (PWO) scintillation crystals at temperatures near -25 deg.C to provide sufficient resolution for photons in the energy range from 8 GeV down to 10 MeV. Radiation hardness of PWO crystals was studied at the IHEP (Protvino) irradiation facility in the temperature range from room temperature down to -25 deg.C. These studies have indicated a significantly different behaviour in the time evolution of the damaging processes well below room temperature. Different signal loss levels at the same dose rate, but at different temperatures were observed. The effect of a deep suppression of the crystal recovery process at temperatures below 0 deg.C has been seen.Comment: 10 pages 7 figure

Anisotropic Bose-Einstein condensates and completely integrable dynamical systems

A Gaussian ansatz for the wave function of two-dimensional harmonically trapped anisotropic Bose-Einstein condensates is shown to lead, via a variational procedure, to a coupled system of two second-order, nonlinear ordinary differential equations. This dynamical system is shown to be in the general class of Ermakov systems. Complete integrability of the resulting Ermakov system is proven. Using the exact solution, collapse of the condensate is analyzed in detail. Time-dependence of the trapping potential is allowed

Performance of a fine-sampling electromagnetic calorimeter prototype in the energy range from 1 to 19 GeV

The fine-sampling electromagnetic calorimeter prototype has been experimentally tested using the 1-19 GeV/c tagged beams of negatively charged particles at the U70 accelerator at IHEP, Protvino. The energy resolution measured by electrons is Delta{E}/E=2.8%/\sqrt{E} + 1.3%. The position resolution for electrons is Delta{x}=3.1 + 15.4/sqrt{E} mm in the center of the cell. The lateral non-uniformity of the prototype energy response to electrons and MIPs has turned out to be negligible. Obtained experimental results are in a good agreement with Monte-Carlo simulations.Comment: Article is prepared for pdflatex using the class elsart. 13 pages, 9 figures in 11 PDF file

Comparison of Radiation Damage in Lead Tungstate Crystals under Pion and Gamma Irradiation

Studies of the radiation hardness of lead tungstate crystals produced by the Bogoroditsk Techno-Chemical Plant in Russia and the Shanghai Institute of Ceramics in China have been carried out at IHEP, Protvino. The crystals were irradiated by a 40-GeV pion beam. After full recovery, the same crystals were irradiated using a $^{137}Cs$ $\gamma$-ray source. The dose rate profiles along the crystal length were observed to be quite similar. We compare the effects of the two types of radiation on the crystals light output.Comment: 10 pages, 8 figures, Latex 2e, 28.04.04 - minor grammatical change

Correlation of Beam Electron and LED Signal Losses under Irradiation and Long-term Recovery of Lead Tungstate Crystals

Radiation damage in lead tungstate crystals reduces their transparency. The calibration that relates the amount of light detected in such crystals to incident energy of photons or electrons is of paramount importance to maintaining the energy resolution the detection system. We report on tests of lead tungstate crystals, read out by photomultiplier tubes, exposed to irradiation by monoenergetic electron or pion beams. The beam electrons themselves were used to measure the scintillation light output, and a blue light emitting diode (LED) was used to track variations of crystals transparency. We report on the correlation of the LED measurement with radiation damage by the beams and also show that it can accurately monitor the crystals recovery from such damage.Comment: 9 pages, 6 figures, LaTeX2

LED Monitoring System for the BTeV Lead Tungstate Crystal Calorimeter Prototype

We report on the performance of a monitoring system for a prototype calorimeter for the BTeV experiment that uses Lead Tungstate crystals coupled with photomultiplier tubes. The tests were carried out at the 70 GeV accelerator complex at Protvino, Russia.Comment: 12 pages, 8 figures, LaTeX2e, revised versio