METHODS OF CHOICE THE SOFTWARE TESTING AND ALGORITHMIC REDUNDANCY PARAMETERS TO ACHIEVE RELIABILITY REQUIREMENTS FOR THE REAL-TIME PROCESSING SYSTEMS

We propose methods for the evaluation software reliability parameter of the real-time processing systems at complex application software testing and algorithmic redundancy. A formulation of the problem of choice the software testing and algorithmic redundancy parameters for achieving reliability requirements for the realtime processing systems is given as a problem of the mixed (integer and continuous) programming with the nonlinear constraints. The problem is solved by brute-force and mesh adaptive direct search algorithms

Comparison of nucleotide sequences of the rplJL leader in Enterobacteria

Determination of primary structure and comparison of the mRNA secondary structure in the rplJL lider was carried out for five species of Enterobacteria. The highly conserved structural organisation was found.Проведено визначення нуклеотидної послідовності та порівняння структур лідерних областей rplJL oпepонів п'яти ентеробактерій. Виявлено високу консервативність структурової організації.Проведено определение нуклеотидной последовательности и сравнения структур лидерных областей rplJL oпepонов пяти энтеробактерий. Выявлена ??высокая консервативность структурной организации

Numerical modelling of transspectral processes in natural waters: implications for remote sensing

Based on a previously developed and thoroughly validated hydro- optical model, numerical simulations of the spectral composition of water leaving radiance are presented. These simulations take into account absorption, elastic scattering, water Raman ( inelastic) scattering as well as the fluorescence of chlorophyll (chl) and dissolved organics (doc). The results obtained for forward modelling were also used for the inverse problem: retrieval of water quality parameters from water volume reflectance (R) spectra. The Levenberg-Marquardt multivariate optimization procedure was used for this purpose. Unlike water Raman scattering, the chl and doc fluorescence has an impact on R, so the retrieval results can change substantially for waters rich in chl or doc. Suspended minerals (sm) suppress both the chl and doc fluorescence influence on R. The retrieval results indicate that chl can be accurately assessed if the concentration of sm is not low and the doc concentration is less than or equal to2 mgC l(-1). For waters devoid of doc, the concentration of chl can be accurately retrieved even if the sm concentration is very low. Retrieval errors prove to be strongly dependent on the fluorescence yield value of both chl and doc

The approaches to developing the distributed information-control systems of organizational type

The article contains the results of research aimed at developing a scientific and methodological framework for justifying solutions for the development of distributed information-control systems of an organizational type. The structuring of the initial data is made, a formalized statement of the problem of justifying solutions for the development of distributed information-control systems of the organizational type is proposed. To solve this problem, a scientific-methodical approach is proposed, which includes methods for assessing the effectiveness of the solution and the individual indicators

The approaches to developing the distributed information-control systems of organizational type

The article contains the results of research aimed at developing a scientific and methodological framework for justifying solutions for the development of distributed information-control systems of an organizational type. The structuring of the initial data is made, a formalized statement of the problem of justifying solutions for the development of distributed information-control systems of the organizational type is proposed. To solve this problem, a scientific-methodical approach is proposed, which includes methods for assessing the effectiveness of the solution and the individual indicators

Numerical simulations of transspectral processes in clear and turbid waters: Implications for water quality remote sensing in the visible spectrum

Assessed are the spectral impacts of water Raman and chlorophyll (chl) and dissolved organics (doe) fluorescence on both upwelling radiance and water quality retrieval results. It is found that unlike water Raman scattering, chl and doe fluorescence impact on both upwelling radiance and retrieval results can be very substantial in waters rich in chl and/or doe, Our simulations indicate that, generally, the chl or doe retrieval errors decrease with increasing content of suspended minerals (sm). The retrieval errors are strongly dependent not only on the optically active water constituents concentration vector, but also on the chl or doc fluorescence yield: the enhancement of this quality results in substantial worsening of water quality retrieval results

Catalytic Hydrogenation Activity and Electronic Structure Determination of Bis(arylimidazol-2-ylidene)pyridine Cobalt Alkyl and Hydride Complexes

The bis(arylimidazol-2-ylidene)pyridine cobalt methyl complex, ((iPr)CNC)CoCH(3), was evaluated for the catalytic hydrogenation of alkenes. At 22 °C and 4 atm of H(2) pressure, ((iPr)CNC)CoCH(3) is an effective pre-catalyst for the hydrogenation of sterically hindered, unactivated alkenes such as trans-methylstilbene, 1-methyl-1-cyclohexene and 2,3-dimethyl-2-butene, representing one of the most active cobalt hydrogenation catalysts reported to date. Preparation of the cobalt hydride complex, ((iPr)CNC)CoH was accomplished by hydrogenation of ((iPr)CNC)CoCH(3). Over the course of 3 hours at 22 °C, migration of the metal-hydride to the 4-position of the pyridine ring yielded (4-H(2)-(iPr)CNC)CoN(2). Similar alkyl migration was observed upon treatment of ((iPr)CNC)CoH with 1,1-diphenylethylene. This reactivity raised the question as to whether this class of chelate is redoxactive, engaging in radical chemistry with the cobalt center. A combination of structural, spectroscopic and computational studies was conducted and provided definitive evidence for bis(arylimidazol-2-ylidene)pyridine radicals in reduced cobalt chemistry. Spin density calculations established that the radicals were localized on the pyridine ring, accounting for the observed reactivity and suggest a wide family of pyridine-based pincers may also be redox active