SENSITIVITY ANALYSIS IN MODELS OF TECHNOLOGICAL PROCESSES CONTROL

2019 ◽  
Vol 1 (7) ◽  
pp. 117-121
Author(s):  
L. P. Vershinina ◽  
M. I. Vershinin
Keyword(s):  
Sensitivity Analysis ◽  
Production Technology ◽  
Statistical Data ◽  
Large Range ◽  
Technological Processes ◽  
Radio Electronic ◽  
Control Models ◽  
Sensitivity Indices

Features of technology of modern production of radio-electronic means and requirements to models of management of technological processes according to features of production are defined. The role of sensitivity analysis in the development of control models is shown. Traditionally applied sensitivity indices and methods of their estimation are considered. The limitations of their application due to the large range of products, the variability of the production technology of radio-electronic means, the non-linearity of the dynamics of technological processes and the lack of statistical data are shown. An algorithm for calculating fuzzy sensitivity parameters using a family of Johnson distributions is proposed. The application of the algorithm is effective in conditions of uncertainty of technological processes’ dynamics, uncontrollability of disturbances and insufficiency of statistical data.

Statistical Data as a Source of Information on the Great Patriotic War

2020 ◽  
Vol 27 (6) ◽  
pp. 105-113
Author(s):  
T. G. Nekhaeva
Keyword(s):  
World War Ii ◽  
Information Sources ◽  
Statistical Data ◽  
Logical Structure ◽  
The Body ◽  
Information Warfare ◽  
Great Patriotic War ◽  
Historical Truth ◽  
Great Victory

The article examines publication of statistical data commemorating the anniversaries of the USSR Victory in the Great Patriotic War as the most important information sources for an objective analysis of historical events. The reason for writing this article was the release of the statistical handbook of Rosstat, dedicated to the 75th anniversary of the Great Victory. In the introduction, the author argues the current urgency of issues addressed in the article caused by information warfare aimed at distorting the historical truth about the role of our country in the anti-Hitler coalition and the defeat of fascism in the World War II. The body of the article describes the concept and content of the anniversary edition. An important point of the article is the analysis of data sources used in the preparation of the handbook. The author reviews the anniversary handbook structure that includes a preface and the following sections: Population, Economic, Living conditions, Mobilization of population, Partisan movement, Evacuation during the war, Casualties and losses during the war, Military memorials and cemeteries, State awards, References. It is noted that the handbook maintains the tradition of previous statistical publications dedicated to the anniversaries of the Great Victory. Lastly, the author substantiates the novelty of data presented in the anniversary handbook and the logical structure of statistical materials in it. The author draws conclusions about the paramount importance of, and need to continue popularization of data on the great exploits of the Soviet people during the war and to introduce new statistical information into scientific circulation, which is causing further comprehension of primary information sources about the Great Patriotic War of 1941-1945.

Role of Rasayana in Geriatric Care - A Review

2016 ◽  
Vol 1 (1) ◽  
Author(s):  
Yagyik Mishra ◽  
Negalur Vijay ◽  
Thakor Krunal ◽  
Bhat Nagaraj ◽  
Shubhasri B.
Keyword(s):  
Older People ◽  
Old Age ◽  
Statistical Data ◽  
Geriatric Care ◽  
The Body ◽  
Psychological Improvement

The growth of any country or society depends on the number of youth dwelling in that country but according to recent statistical data we soon will have older people more than children and more people at extreme old age than ever before. The number of people aged 65 or older is projected to grow from an estimated 524 million in 2010 to nearly 1.5 billion in 2050. Geriatrics (Jarachikitsa) is the branch of medicine dealing exclusively with the problems of aging and the diseases of elderly. The term Rasayana (rejuvination) refers to nourishment or nutrition. Rasayana therapy act essentially on nutrition dynamics and rejuvenate the body on both physical and mental levels. The problems of health due to modernization can be solved by increasing resistance against diseases and psychological improvement by implementing Rasayana therapy. Aging (Jara) is one among the Swabhavika Vyadhis. Jara Chikitsa is one among the Astanga of Ayurveda which is specifically dedicated for geriatric care. As per estimation, India currently has around 75 million persons over 65 years. By proper administration of Rasayana therapy as preventive tool one can delay Jara Janita Vyadhis to occur. This paper highlights the role of Rasayana in geriatric care.

scholarly journals Sensitivity Analysis for Microscopic Crowd Simulation

Algorithms ◽  
2020 ◽  
Vol 13 (7) ◽  
pp. 162
Author(s):  
Marion Gödel ◽  
Rainer Fischer ◽  
Gerta Köster
Keyword(s):  
Sensitivity Analysis ◽  
Low Cost ◽  
Input Parameter ◽  
Dimensional Subspace ◽  
Crowd Simulation ◽  
Pedestrian Dynamics ◽  
Sensitivity Indices ◽  
Expensive Problems ◽  
Influential Parameters ◽  
Typical Scenario

Microscopic crowd simulation can help to enhance the safety of pedestrians in situations that range from museum visits to music festivals. To obtain a useful prediction, the input parameters must be chosen carefully. In many cases, a lack of knowledge or limited measurement accuracy add uncertainty to the input. In addition, for meaningful parameter studies, we first need to identify the most influential parameters of our parametric computer models. The field of uncertainty quantification offers standardized and fully automatized methods that we believe to be beneficial for pedestrian dynamics. In addition, many methods come at a comparatively low cost, even for computationally expensive problems. This allows for their application to larger scenarios. We aim to identify and adapt fitting methods to microscopic crowd simulation in order to explore their potential in pedestrian dynamics. In this work, we first perform a variance-based sensitivity analysis using Sobol’ indices and then crosscheck the results by a derivative-based measure, the activity scores. We apply both methods to a typical scenario in crowd simulation, a bottleneck. Because constrictions can lead to high crowd densities and delays in evacuations, several experiments and simulation studies have been conducted for this setting. We show qualitative agreement between the results of both methods. Additionally, we identify a one-dimensional subspace in the input parameter space and discuss its impact on the simulation. Moreover, we analyze and interpret the sensitivity indices with respect to the bottleneck scenario.

Social and Familial Factors in the Development of Early Childhood Asthma

PEDIATRICS ◽  
1985 ◽  
Vol 75 (5) ◽  
pp. 859-868 ◽  
Author(s):  
L. J. Horwood ◽  
D. M. Fergusson ◽  
F. T. Shannon
Keyword(s):  
Early Childhood ◽  
Birth Cohort ◽  
Childhood Asthma ◽  
Proportional Hazards ◽  
Large Range ◽  
Significant Risk ◽  
Social Background ◽  
Familial Factors ◽  
The Family

The role of social and familial factors in the development of childhood asthma by age 6 years was studied in a birth cohort of New Zealand children. Rates of asthma varied markedly with the child's sex; boys had twice the rate of asthma as girls. In addition, the factors associated with asthma varied with the child's sex. For boys, wheeze during infancy, early eczema, and parental asthma were all significant risk factors; for girls, the only risk factor was early eczema. Proportional hazards modeling of the data failed to show any significant associations between the development of asthma and a large range of other social and familial factors including breast-feeding, parental smoking habits, pets in the child's family, stress in the family, or family social background. It was concluded that asthma in early childhood appeared to be inherited to some extent, its age of expression was related to the child's sex, and it had a complex interaction with other forms of allergic disease. There was no evidence to suggest that the structure, practices, or dynamics of the child's family played a significant role in the development of asthma for children in this birth cohort.

THE ROLE OF WOMEN IN THE PUBLIC EDUCATION OF THE SURKHAN OASIS(ON EXAMPLE IN THEYEARS OF INDEPENDENCE)

2021 ◽  
Vol 4 (6) ◽  
pp. 62-66
Author(s):  
Sabohat B. Radjabova ◽  
Keyword(s):  
Public Education ◽  
Education System ◽  
Statistical Data ◽  
The State ◽  
Work Activities ◽  
The Public ◽  
Role Of Women

It is scientifically analyzed information about the activity of women in the education system of Surkhandarya region in the period of independence years and their achievements in this field through statistical data with examples over the years in this article. It is emphasized that the state pays attention to the work activities of selfless women, who have been awarded many medals and medals in this region, such as the Medal of “Shukhrat”, the Order of “Saglom avlod uchun”, the title of "Xalk ta`limi a`lochisi", is also mentioned separately

scholarly journals Georeferenced data in epidemiologic research

2008 ◽  
Vol 13 (6) ◽  
pp. 1753-1766 ◽  
Author(s):  
Guilherme Loureiro Werneck
Keyword(s):  
Sensitivity Analysis ◽  
Spatial Clustering ◽  
Spatiotemporal Modeling ◽  
Epidemiologic Research ◽  
Research Issues ◽  
Correlation Studies ◽  
Analytical Approaches ◽  
Ecological Correlation ◽  
Further Development

This paper reviews some conceptual and practical issues regarding the application of georeferenced data in epidemiologic research. Starting with the disease mapping tradition of geographical medicine, topics such as types of georeferenced data, implications for data analysis, spatial autocorrelation and main analytical approaches are heuristically discussed, relying on examples from the epidemiologic literature, most of them concerning mapping disease distribution, detection of disease spatial clustering, evaluation of exposure in environmental health investigation and ecological correlation studies. As for concluding remarks, special topics that deserve further development, including the misuses of the concept of space in epidemiologic research, issues related to data quality and confidentiality, the role of epidemiologic designs for spatial research, sensitivity analysis and spatiotemporal modeling, are presented.

scholarly journals A Global Sensitivity Analysis Framework for Hybrid Simulation with Stochastic Substructures

2021 ◽  
Vol 7 ◽  
Author(s):  
Nikolaos Tsokanas ◽  
Xujia Zhu ◽  
Giuseppe Abbiati ◽  
Stefano Marelli ◽  
Bruno Sudret ◽  
...  
Keyword(s):  
Sensitivity Analysis ◽  
Hybrid Model ◽  
Surrogate Model ◽  
Global Sensitivity Analysis ◽  
Hybrid Simulation ◽  
Hybrid Models ◽  
Analysis Framework ◽  
Global Sensitivity ◽  
Sensitivity Indices ◽  
Realistic Situation

Hybrid simulation is an experimental method used to investigate the dynamic response of a reference prototype structure by decomposing it to physically-tested and numerically-simulated substructures. The latter substructures interact with each other in a real-time feedback loop and their coupling forms the hybrid model. In this study, we extend our previous work on metamodel-based sensitivity analysis of deterministic hybrid models to the practically more relevant case of stochastic hybrid models. The aim is to cover a more realistic situation where the physical substructure response is not deterministic, as nominally identical specimens are, in practice, never actually identical. A generalized lambda surrogate model recently developed by some of the authors is proposed to surrogate the hybrid model response, and Sobol’ sensitivity indices are computed for substructure quantity of interest response quantiles. Normally, several repetitions of every single sample of the inputs parameters would be required to replicate the response of a stochastic hybrid model. In this regard, a great advantage of the proposed framework is that the generalized lambda surrogate model does not require repeated evaluations of the same sample. The effectiveness of the proposed hybrid simulation global sensitivity analysis framework is demonstrated using an experiment.

scholarly journals The Role of Ethnic Social Capital in the Operation of Entrepreneurs in Transcarpathia, Ukraine

2021 ◽  
Vol 9 (3) ◽  
pp. 129-156
Author(s):  
Katalin Kovály
Keyword(s):  
Social Capital ◽  
Statistical Data ◽  
Ethnic Relations ◽  
Business Organizations ◽  
Structured Interviews ◽  
Foreign Investors ◽  
History Of ◽  
The Given ◽  
Foreign Enterprises

Owing to its geopolitical position, history of shifting borders, and multiethnic-multilingual population, Transcarpathia provides a convenient environment to study how ethnicity interplays with the economy. The present research aims to examine the role of formal and informal ethnic social capital in the life of Transcarpathian enterprises. The research is based on mainly semi-structured interviews conducted with foreign investors in Transcarpathia and with local Transcarpathian Hungarian entrepreneurs as well as with representatives of business organizations related to the given community. I also analyzed economic databases and statistical data. The results of the research imply that informal relationships are essential in the operation of enterprises, however, these relationships are not always organized on an ethnic basis. I argue that institutionalized relations have not played an important role in the case of foreign enterprises. However, among Transcarpathian Hungarian entrepreneurs, the role of formal ethnic relations has increased due to the financial support provided by Hungary.

scholarly journals Abandoning the concept of renewable energy

2019 ◽  
Author(s):  
Atte Harjanne ◽  
Janne M. Korhonen
Keyword(s):  
Renewable Energy ◽  
Energy Policy ◽  
Energy Production ◽  
Statistical Data ◽  
Global Climate ◽  
Specific Form ◽  
Case Examples ◽  
Central Energy ◽  
Policy Impacts

Renewable energy is a widely used term that describes certain types of energy production. In politics, business and academia, renewable energy is often framed as the key solution to the global climate challenge. We, however, argue that the concept of renewable energy is problematic and should be abandoned in favor of more unambiguous conceptualization.Building on the theoretical literature on framing and based on document analysis, case examples and statistical data, we discuss how renewable energy is framed and has come to be a central energy policy concept and analyze how its use has affected the way energy policy is debated and conducted. We demonstrate the key problems the concept of renewable energy has in terms of sustainability, incoherence, policy impacts, bait-and-switch tactics and generally misleading nature. After analyzing these issues, we discuss alternative conceptualizations and present our model of categorizing energy production according to carbon content and combustion.The paper does not intend to criticize or promote any specific form of energy production, but instead discusses the role of institutional conceptualization in energy policy.

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