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Logic and risk as qualitative and quantitative dimensions of decision-making processes

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GALANC T., KOŁWZAN W., PIERONEK J., SKOWRONEK-GRĄDZIEL A.
Operations Research and Decisions
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2016
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vol. 26
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issue 3
21-42
EN
Key problems in the field of decision-making have been considered. The authors’ aim was to in-dicate the extremely important for management role of logic and risk in relation to decisions taken under conditions of uncertainty. In the course of the research, the following hypothesis was tested: the complexity of risk is determined by the diversity of reality. The result of this is that in science there is no current study developing a uniform methodology for the assessment of risk. It might even be doubt-ful whether it can be created. In a certain sense, this is indicated in the article by the discussion about the dimensions of logic and risk apparent in any decisions taken by a man. The paper presents the complexity and diversity of risk assessment on the basis of selected, but essential to the discussed issue, fields of knowledge. This is valid when the numerical or qualitative level of risk is substantial in the context of the analyzed problem.
2
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Probabilistic characteristics supporting the management of a production-supply system

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GALANC T., KOŁWZAN W., PIERONEK J.
Operations Research and Decisions
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2017
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vol. 27
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issue 3
51-63
EN
The construction of a model and quantitative measures have been presented aimed at improving the efficiency of a production-supply system described by a three-dimensional stochastic process. For this purpose, the laws governing the functioning of the system have been described, corresponding to the three different states of the stock level in the subsystem M. These laws generate the quantitative model of the examined system, which enables the construction of the proposed quantitative measures supporting the managing process of such a system.
3
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Non-extreme variant of support management model of a production-supply system with the structural process of product supply

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GALANC T., KOŁWZAN W., PIERONEK J.
Operations Research and Decisions
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2019
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vol. 29
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issue 2
43-53
EN
The paper is dedicated to building a probabilistic analysis method of functioning a productionsupply system with the structural process of product supply. This analysis is carried out in the nonextreme variant of warehouse filling level to which two independent streams of production (of the product) are directed by means of a transport subsystem. For this variant, four sets of equations that fulfilled the density function determining state probabilities of a multidimensional process characterizing operations of the system examination were derived.
4
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Informatics systems of decision support and analysis of their security

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GALANC T., KOŁWZAN W., PIERONEK J.
Operations Research and Decisions
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2016
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vol. 26
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issue 1
45-53
EN
A new approach to security issues associated with the use of teleinformatics systems in the decision-making process has been presented. There is a discussion of the relationship between the security of informatics systems and the security of the decision-making process in which they are used, in particular regarding the threats resulting from the use of informatics systems and modern teleinformatics technologies. In addition, an overview of the dangers that could have a significant impact on appropriate decision-making has been performed. The paper points out the possible ways to ensure security depending on the type of threats encountered. In particular, threats particularly linked with the security of informatics systems supporting decision-making have been identified.
5
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Risk estimation and decision making in management (in selected areas of science)

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GALANC T., KOŁWZAN W., PIERONEK J., SKOWRONEK-GRĄDZIEL A.
Operations Research and Decisions
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2020
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vol. 30
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issue 1
47-66
EN
Risk is a category that is inseparably connected with uncertainty and probability, which means that the nature of risk as a category of science is complex, and the concept of risk is very difficult to define by one conceptual system of modern science. Due to the above, the main research hypothesis of the work is oriented to the assumption that the complexity of the risk category is determined by the diversity (variety) of reality, as a result of which in science there is currently no uniform methodology for risk assessment and estimation. As a result, the main goal of the article is to describe the research area based on selected representative methods of risk estimation and logical decision-making schemes, as well as to systematise the knowledge about the methodology used in them. In the article, the authors illustrate risk estimation with examples developed by themselves and quoted from various fields of science, differing from one another in formal terms in quantitative and qualitative (numerical and content-verbally) dimensions. Strategic risk, risk of fraction estimation, Bayesian risk, Bayesian methods for estimation of population distribution parameters, risk of econometric model assessment, interest rate risk, banking risk, and adverse event as a measure of risk are here addressed. The article also focuses on the problem of risk estimation in terms of the theory of fractals. The work is to have not only cognitive but also practical meaning. The created source of knowledge should prove helpful for decision-makers in the area of management since effective process management requires the expertise of risk estimation in various dimensions and using various mathematical tools.
6
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Management and decisions in the structures of human activities

100%
GALANC T., KOŁWZAN W., PIERONEK J., SKOWRONEK-GRĄDZIEL A.
Operations Research and Decisions
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2017
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vol. 27
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issue 4
45-69
EN
This article has been devoted to the key dimensions of decision-making. The main goal of the authors was to point out the role and effect of invariants of nature, logic and conceptual systems of science and management, which are extremely important in decision-making processes. The research hypothesis has been tested that the complexity of decision-making and management are determined by the state of reality (Nature). This hypothesis is related to the fact that in science there is currently no uniform methodology associated with decision-making, just as science is not methodologically uniform. One can even doubt whether it is possible to describe the essential dimensions of decisions undertaken by Man, as discussed in this article. These problems are not a novelty to science, since they have been analysed by many scientists in the past. The authors of the article present the complexity and diversity of concepts defining systems of decision-making and management, based on selected fields of knowledge which are generally relevant to this issue, in particular fields associated with ontology and epistemology. Therefore, the text refers broadly to investigating the reality of basic areas of human knowledge and the overlapping relationships between them. This applies to the so-called circle of the sciences proposed and examined by the psychologist J. Piaget. An additional aim of the authors was to create a text presenting contemporary human knowledge about the reality which surrounds us. To understand reality means to be in relative equilibrium with it.
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