Построение математических моделей численной оценки параметров жизненного цикла технического документа
The purpose of this article is to provide a mathematical model to numerically estimate the parameters of the life cycle of the technical documentation on high-tech enterprises. Methodology of constructing such a model based on the consideration of statistical regularities of the life cycle of technical documentation involved in different projects. It uses data from the knowledge base of the enterprise. This work has revealed the basic rules of constructing mathematical models of similar estimates of the parameters of the life cycle of technical documentation as a result. This article is focused on the duration as a parameter of the life cycle. The constructed model analysis is universal and applicable to almost any high technology enterprise, which has its own knowledge base. Sure thing that the task of evaluating the various parameters of the life cycle of the technical paper is very relevant. Managers often must be aware of the total material costs of the project with a specific set of technical documentation before it starts. The constructed model is based on statistical regularities that exist for various projects in the enterprise, separated in time, thereby allowing the manager to have an idea about the project before it starts.
Inferences on the development and morphology of extinct brachiopods must be informed by the ontogeny and shell ornamentation of extantbrachiopods. Although the adult shells of extant brachiopods are wellstudied,detailed descriptions of the embryonic and juvenile shells of extant lingulides are lacking. Here, we describe in detail the shells of juveniles of Lingula anatina Lamarck, 1801 from Vietnam and the Republic of the Philippines. The following previously unknown properties of the lingulide shell are described: (i) a distinct border between the protegulum and the brephic shell; (ii) drapes that develop on both the protegulum and brephic shell; and (iii) the notched anterior margin of the brephic shell. The drapes and cogs on the brephic shell may becaused by the formation of setal follicles during the planktonic stage. Specimens of L. anatina from the Philippines have larger brephic shells than those from Vietnam probably because the former have a longer planktonic stage. Based on comparisons of the first-formed shells of extant brachiopods with published data on fossil brachiopods, we suggest that the life cycle of extant lingulides, in which planktotrophic juveniles with a shell hatch from the egg envelopes, is the mostevolutionarily advanced brachiopod life cycle and appeared in the Early Silurian. We suggest criteria for determining the type of life cycle based on the structure of the first-formed shell of brachiopods. Finally, we consider hypothetical scenarios of life cycles of fossil brachiopods including true planktotrophic larvae in the Cambrian linguliforms.
This article is dedicated to the problem of knowledge inthe field of morality. The main idea here is that such knowledge needs so called moral feeling.
The article considers the processes of progress in production and service sectors and answers the question how and thanks to what service sector of Russian economy left the productive one behind (concerning contribution in GDP of our country). The rates of development of service sector turned out to be so high firstly - as a reason of peculiarities of new Russian economy, which historically was built on the market principles and was developing in conditions of investment resources deficit, secondly - as a reason of system differences between «physical» goods and services as an object of sale. Nowadays Russia faces an unusual symbiosis: effective service companies, operating in hard competitive sphere with average profitability and non-affective from the point of management industrial companies, which thanks to monopolistic pricing have great profitability, providing profits of Russian budget and determining a macroeconomic situation.
In the paper integrated information systems for corporate planning and budgeting are considered. Four groups of practical tasks exceeding the bounds of typical functionality of special-purpose planning and budgeting information systems are allocated. Several classes of information systems (simulation, statistical analysis, financial analysis and modeling, group decision making, business intelligence), which may provide the completeness of corporate planning and budgeting are denoted as solutions complementary to special-purpose planning and budgeting systems.
We consider certain spaces of functions on the circle, which naturally appear in harmonic analysis, and superposition operators on these spaces. We study the following question: which functions have the property that each their superposition with a homeomorphism of the circle belongs to a given space? We also study the multidimensional case.
We consider the spaces of functions on the m-dimensional torus, whose Fourier transform is p -summable. We obtain estimates for the norms of the exponential functions deformed by a C1 -smooth phase. The results generalize to the multidimensional case the one-dimensional results obtained by the author earlier in “Quantitative estimates in the Beurling—Helson theorem”, Sbornik: Mathematics, 201:12 (2010), 1811 – 1836.
We consider the spaces of function on the circle whose Fourier transform is p-summable. We obtain estimates for the norms of exponential functions deformed by a C1 -smooth phase.