(Discrete Nature of the Migration Space as a Risk Factor of Ethno-Political System Stability)

2015 ◽  
Author(s):  
Sergey ((((((() Grishin ((((((()
Keyword(s):  
Risk Factor ◽  
Political System ◽  
System Stability ◽  
Discrete Nature

scholarly journals Methods for the Calculation of Thermoacoustic Stability Margins and Monte Carlo-Free Uncertainty Quantification

2017 ◽  
Author(s):  
Georg A. Mensah ◽  
Luca Magri ◽  
Jonas P. Moeck
Keyword(s):  
Monte Carlo ◽  
Factor Analysis ◽  
Risk Factor ◽  
Uncertainty Quantification ◽  
Frequency Domain ◽  
Gas Turbines ◽  
Network Models ◽  
System Stability ◽  
Risk Factor Analysis ◽  
Model Parameters

Thermoacoustic instabilities are a major threat for modern gas turbines. Frequency-domain based stability methods, such as network models and Helmholtz solvers, are common design tools because they are fast compared to compressible CFD computations. Frequency-domain approaches result in an eigenvalue problem, which is nonlinear with respect to the eigenvalue. Nonlinear functions of the frequency are, for example, the n–τ model, impedance boundary conditions, etc. Thus, the influence of the relevant parameters on mode stability is only given implicitly. Small changes in some model parameters, which are obtained by experiments with some uncertainty, may have a great impact on stability. The assessment of how parameter uncertainties propagate to system stability is therefore crucial for safe gas turbine operation. This question is addressed by uncertainty quantification. A common strategy for uncertainty quantification in thermoacoustics is risk factor analysis. It quantifies the uncertainty of a set of parameters in terms of the probability of a mode to become unstable. One general challenge regarding uncertainty quantification is the sheer number of uncertain parameter combinations to be quantified. For instance, uncertain parameters in an annular combustor might be the equivalence ratio, convection times, geometrical parameters, boundary impedances, flame response model parameters etc. Assessing also the influence of all possible combinations of these parameters on the risk factor is a numerically very costly task. A new and fast way to obtain algebraic parameter models in order to tackle the implicit nature of the eigenfrequency problem is using adjoint perturbation theory. Though adjoint perturbation methods were recently applied to accelerate the risk factor analysis, its potential to improve the theory has not yet been fully exploited. This paper aims to further utilize adjoint methods for the quantification of uncertainties. This analytical method avoids the usual random Monte Carlo simulations, making it particularly attractive for industrial purposes. Using network models and the open-source Helmholtz solver PyHoltz it is also discussed how to apply the method with standard modeling techniques. The theory is exemplified based on a simple ducted flame and a combustor of EM2C laboratory for which experimental validation is available.

scholarly journals DATA PROCESSING CENTER AS THE BASIS OF INFORMATION SECURITY OF THE DEFENSE MINISTRY OF UKRAINE

2019 ◽  
Vol 5 (57) ◽  
pp. 84-87
Author(s):  
S. Suhak ◽  
L. Shabanova-Kushnarenko ◽  
M. Siruk ◽  
N. Bihun ◽  
A. Mishchenko
Keyword(s):  
Data Processing ◽  
Data Center ◽  
Political System ◽  
Armed Forces ◽  
Information Infrastructure ◽  
System Stability ◽  
The Political ◽  
Political Processes ◽  
Data Processing Center ◽  
The Creation

Nowadays, the development of information technologies determines the successful functioning of the political system, since they allow to control political processes, prevent social and political conflicts. Increasing the level of reliability of the information, the most effective use of information resources, external and internal information ropes increase the stability of the political system, stability of the socio-political development of the country. The combination of different telecommunication technologies that create the preconditions for building flexible and high-performance service-oriented systems can be used to solve problems in different industries. However, nowadays, one of the constraints on the implementation and further development of such networks is the theoretical under-development of service delivery models, due to the lack of comprehensive information on the structure of data center networks. During the research conducted by the authors, it was found that the data processing center is the basis for informing the defense ministry of Ukraine. During the research, the authors used general scientific methods of analysis and synthesis, as well as the basic provisions of the theory of informatics, the theory of complex technical systems, the theory of information, etc. During the research, the authors substantiated the main tasks that will be performed by the data processing center of the defense ministry of Ukraine, identified the main information and calculation tasks that will be performed by them. The authors also substantiated the requirements for building a data center of the Defense Ministry of Ukraine. The authors evaluated modern technological solutions and software and hardware for the creation of the information infrastructure of the defense ministry of Ukraine. Possible technical and software for building a reliable and secure data processing center of the defense ministry of Ukraine are proposed. Therefore, the prospective direction of further scientific research of the authors should be considered the justification of ways of improvement of informatization of the armed forces of Ukraine and the creation of information infrastructure of the defense ministry of Ukraine are mobile data centers. This will allow the deployment of information infrastructure in various conditions, including in the open space, which is very relevant for the specifics of actions in the east of Ukraine.

Dimensions of Political Alienation

1970 ◽  
Vol 64 (2) ◽  
pp. 389-410 ◽  
Author(s):  
Ada W. Finifter
Keyword(s):  
World War Ii ◽  
Political Institutions ◽  
Political System ◽  
System Stability ◽  
Civic Culture ◽  
The Political ◽  
Political Systems ◽  
Marked Rise ◽  
Citizen Support ◽  
The Individual

In recent years there has emerged in this country a radical questioning and rejection of established political institutions unparalleled since the Civil War in its intensity and scope. One objective indicator of this trend since World War II is the marked rise in voluntary renunciation of American citizenship, an act which represents the formal and final estrangement of the individual from his former political ties. Available evidence suggests that estrangement from the polity is also widespread in countries throughout the world as fundamental questions are being raised about the legitimacy of political institutions and political leadership.Attitudes toward the political system have long been a concern of political scientists. Major orienting theories of the political system suggest that citizen support plays a crucial role in determining the structure and processes of political systems. Almond and Verba, for example, use the concept “civic culture” to refer to a complex mix of attitudes and behaviors considered to be conducive to democratic government. Easton underscores the fundamental importance of attitudes for system stability, focusing especially on “diffuse support” as a prerequisite for the integration of political systems. He suggests that “(w)here the input of support falls below [a certain] minimum, the persistence of any kind of system will be endangered. A system will finally succumb unless it adopts measures to cope with the stress.”The conversion of these general theoretical ideas into systematic empirical theory requires further rigorous and comprehensive analyses of types of citizen support and the development of empirical indicators for this domain.

scholarly journals The Formation of a Stable Political Governance: Structural-Functional and Morphological Analysis

2021 ◽  
pp. 118-127
Author(s):  
A. D. Tumanov
Keyword(s):  
Political System ◽  
Morphological Analysis ◽  
Political Stability ◽  
System Stability ◽  
Modern World ◽  
The Political ◽  
Integral Basis ◽  
Systematic Analysis ◽  
State Management ◽  
Political Governance

The purpose of the article is to implement a systematic analysis of the factors of the formation of a stable system of political governance. To clarify the functions and structure of a stable political system, the characteristics of stability are highlighted, according to which the political system: has signs of legitimacy; is able to cope with the threat of illegitimate violence; supports the constitu-tional system; reproduces a model of behavior based on stability. Methodologically, the article is based on the works of classical and modern scientists (P. M. Khomyakov, M.A. Gaydes, I.B . Rodionov, A. A. Khomiakov). Makarycheva), devoted to the systematic analysis of political systems. The paper also uses morphological analysis, analysis of political efficiency, and in the final part — the method of state-management design. The author comes to the conclusion that the functions and structure of the modern political system should be considered from the point of view of the defini-tions of “political stability”, viewed through the prism of the absence of political threats, adaptive irremovability of political subjects and the balance of political forces. Political stability implies that the distribution of resources in society involves not only the institutional subsystem of the political system, but also the functional, regulatory and ideological subsystems. Morphological analysis demonstrates that a stable political system is characterized by a balanced interaction of subsystems, in which at least the institutional, regulatory and functional subsystems jointly determine the process of functioning and development of the political system. Stability is the basis and guarantee of po-litical development in the modern world, and stability is not contrary to innovative development or development in general. Both stability and development are the basic conditions for the development of a modern political system, methods of avoiding negative adaptation in the global environment. Stability is not synonymous with closeness — on the contrary, it implies horizontal and vertical mobility, a constitutional system, and a focus on maintaining the activity of political actors. At the same time, all these processes cannot be allowed to take their course and develop outside the political control of the vertical structures of power. Integrity as a system-wide property is an integral basis for the stability of the political system.

Courts and Conflict Resolution: Problems in the Mobilization of Adjudication

1975 ◽  
Vol 69 (4) ◽  
pp. 1200-1217 ◽  
Author(s):  
Austin Sarat ◽  
Joel B. Grossman
Keyword(s):  
Conflict Resolution ◽  
Social Context ◽  
Conflict Management ◽  
Political Culture ◽  
Dispute Resolution ◽  
Entire Range ◽  
Political System ◽  
System Stability ◽  
The Political

This article attempts to assess the role of courts and other adjudicative institutions in the definition, interpretation, and management of conflict. Understanding the function of courts requires an understanding of a society's entire range of conflict management mechanisms. Particular emphasis is placed on those variables most likely to determine where and how conflicts will be solved.Adjudicative institutions can be effectively differentiated by a typology which measures the level of formality in procedures and the degree of “publicness.” The structure of a dispute-resolving institution will have an important effect on which disputes are presented to it and how they are decided. The nature of the dispute, goals of the disputants, social context, and political culture are also important variables.Government has an important stake in the manner in which disputes arise and are resolved. It may promote or require the resolution of some disputes in the courts while allowing others to be resolved in less public and formal arenas. Formal litigation may provide a model for private dispute resolution. It may also absorb and deflect grievances before they escalate into more organized and intense demands on the political system. Finally, litigation may have an important effect on system stability by promoting support for regime values.

Measuring Social and Political Requirements for System Stability in Latin America

1968 ◽  
Vol 62 (4) ◽  
pp. 1125-1143 ◽  
Author(s):  
Ernest A. Duff ◽  
John F. McCamant
Keyword(s):  
Latin America ◽  
Political System ◽  
System Stability ◽  
The Political ◽  
Political Systems ◽  
Political Factors ◽  
The Social ◽  
The Stability

This article considers the social and political factors that influence the stability/instability of the political system and attempts to measure some of these factors in the political systems of Latin America.

scholarly journals SOLVING THE BOTTLENECK PROBLEM IN A WAREHOUSE USING SIMULATIONS

2021 ◽  
Vol 8 (2) ◽  
pp. 107-116
Author(s):  
Jana Fabianova ◽  
Jaroslava Janekova ◽  
Jozef Horbulak
Keyword(s):  
Risk Factor ◽  
Computer Simulations ◽  
Simulation Analysis ◽  
Simulation Method ◽  
System Stability ◽  
Financial Resources ◽  
Customer Requirements ◽  
Financial Costs ◽  
Distribution Process ◽  
Workload Distribution

The uneven workload distribution and working time utilisation create a bottleneck, leading to inefficient utilisation of capacity and increased costs. A bottleneck is a limiting and risk factor for any business entity. In the case of a distribution warehouse, the bottleneck limits its ability to meet the requirements for sending an order within the required time limit. Delays at any phase of a distribution process may result in non-compliance with customer requirements. In solving capacity problems and bottlenecks elimination, computer simulations and optimisation are often used. The article presents a basic simulation analysis of workload distribution and work times, useful for logistics companies, thus for the area of human and financial resources. In the article, the use of simulations in the ExtendSim9 program to eliminate the bottleneck is discussed. The bottleneck is solved by experiments on a simulation model when optimal workers assignment to individual workplaces of the warehouse is sought. The two final proposals for workers allocation, with the current and increased number of workers, are compared in workforce utilisation and system stability. The simulation method allows verification of the proposals' impacts in advance and practically with no financial costs.

Clinical aspects of reactive oxygen and nitrogen species

2004 ◽  
Vol 71 ◽  
pp. 121-133 ◽  
Author(s):  
Ascan Warnholtz ◽  
Maria Wendt ◽  
Michael August ◽  
Thomas Münzel
Keyword(s):  
Oxidative Stress ◽  
Reactive Oxygen Species ◽  
Risk Factor ◽  
Endothelial Dysfunction ◽  
Vascular Tissue ◽  
Rapid Development ◽  
Reactive Oxygen ◽  
Clinical Aspects ◽  
No Production ◽  
Oxygen Species

Endothelial dysfunction in the setting of cardiovascular risk factors, such as hypercholesterolaemia, hypertension, diabetes mellitus and chronic smoking, as well as in the setting of heart failure, has been shown to be at least partly dependent on the production of reactive oxygen species in endothelial and/or smooth muscle cells and the adventitia, and the subsequent decrease in vascular bioavailability of NO. Superoxide-producing enzymes involved in increased oxidative stress within vascular tissue include NAD(P)H-oxidase, xanthine oxidase and endothelial nitric oxide synthase in an uncoupled state. Recent studies indicate that endothelial dysfunction of peripheral and coronary resistance and conductance vessels represents a strong and independent risk factor for future cardiovascular events. Ways to reduce endothelial dysfunction include risk-factor modification and treatment with substances that have been shown to reduce oxidative stress and, simultaneously, to stimulate endothelial NO production, such as inhibitors of angiotensin-converting enzyme or the statins. In contrast, in conditions where increased production of reactive oxygen species, such as superoxide, in vascular tissue is established, treatment with NO, e.g. via administration of nitroglycerin, results in a rapid development of endothelial dysfunction, which may worsen the prognosis in patients with established coronary artery disease.

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