181 research outputs found
Using slit rheometry in characterising coating colour flow in the blade coating process
The aim of the present work was to evaluate the suitability of SLIT rheometry for characterising the coating colour flow in paper coating. The detailed aims were to determine the mechanisms governing the flow through the SLIT; to find out what kind of information on the coating colour flow that can be obtained with the SLIT; and to evaluate the ability of the SLIT to predict the relationship between coat weight and blade pressure.
For this purpose, flows of Newtonian model fluids and coating colours were studied both with conventional capillary and SLIT geometries attached to a high-shear rheometer. Correlations with laboratory coating data were determined for both geometries.
It was found that the flow through the SLIT does not attain a fully developed velocity profile and is unstable along the whole length of the SLIT. The instability caused by entrance effects is present at the exit from the SLIT as residual entrance pressure.
The SLIT geometry was found to be more sensitive to differences in coating colour formulations and also able to differentiate between coating colours displaying similar flow behaviour in conventional capillary measurements.
In a laboratory trial, the differences in coating formulations reflected by the SLIT measurements were found to be in good correlation with the blade position required to achieve the target weights. Coating colours demonstrating greater flow resistance in SLIT measurements required a smaller blade distance to achieve the required coat weight.reviewe
М.Я. Лемешев – основатель науки об экономике природопользования
The article is dedicated to the memory of the outstanding Russian scientist and social and political figure Mikhail Yakovlevich Lemeshev, whose life and work were dedicated to serving science and the people. The work highlights the scientific activity of M. Ya. Lemeshev as an outstanding world-class economist who laid the fundamental theoretical foundations of environmental economics and the development of the human community in harmony with the environment
WHAT ECONOMIC THEORY SHOULD BE TAUGHT IF THE GOAL IS SUSTAINABLE DEVELOPMENT?
The article is devoted to the topic of possible transformations in the paradigm of socio-economic development of modern world civilization, in the context of climate change. The purpose of the study: to identify what it would be desirable to change in textbooks on economics so that those who study, becoming managers and politicians, do not destroy the Earth’s biosphere by their actions. What in the economic mainstream underlies those pathological features of the world economy that lead all of humanity to the climatic apocalypse? At the level of theory, this is due to the extreme subjectivity of modern economic theory, which has taken the form of abandoning the category of “value”. The discussion of value is potentially of great practical importance: it is, in essence, a discussion of the legitimacy of the entire modern world financial and economic order. as the whole experience of world civilization shows, new ideas replace old ones when a new generation grows, for which these ideas are an organic part of their view of the world. Therefore, a change in the financial and economic paradigm should begin with changes in the textbooks of economics.
Methodology of formation and realization of competitive strategy of machine building enterprises
The article views approaches of the Russian and foreign scientists to development and realization of competitive strategy of enterprises. Necessity and importance of development of competitive strategy, oriented at formation of competitive advantages, methods, and means of competitive struggle, predetermined by increased competition and growth of consumers’ requirements to product quality. This process plays a very important role in machine building. Machine building is one of the strategically important spheres which ensure development and security of the country. At the same time, Russian machine building lags behind most of developed countries as to the level of development. Main reasons for such lagging behind are: inaccessibility of credit means, low investment and innovational provision, low qualification of management, and old production and technical base. In order to overcome the existing gap, it is necessary to develop long-term competitive strategy of development of machine building enterprises which ensures conquering certain markets of specific products. Based on the analysis of definitions of scientists and specialists in the sphere of strategic management, the notion “competitive strategy of enterprise” is specified. Methodology of formation and realization of enterprise’s strategy are viewed in detail. Specific examples of missions, strategic vision, and strategic goals of leading enterprises of machine building are given. Significance of development of competitive strategy for effective functioning and development of enterprise is shown. Features which distinguish the process of development and realization of competitive strategy from models of strategic planning that exist in scientific literature are determined. It is proved that development of competitive strategy requires paying special attention to analysis of competitive potential of enterprise and level of its competitive activity – for the purpose of creation of effective strategy which would fully express specifics of activities and individuality of enterprise.peer-reviewe
Propensity Score-Matched Analysis of Open Surgical and Endovascular Repair for Type B Aortic Dissection
Objective. To identify national outcomes of thoracic endovascular aortic repair (TEVAR) for type B aortic dissections (TBADs).
Methods. The Nationwide Inpatient Sample database was examined from 2005 to 2008 using ICD-9 codes to identify patients with TBAD who underwent TEVAR or open surgical repair. We constructed separate propensity models for emergently and electively admitted patients and calculated mortality and complication rates for propensity score-matched cohorts of TEVAR and open repair patients.
Results. In-hospital mortality was significantly higher following open repair than TEVAR (17.5% versus 10.8%, P = .045) in emergently admitted TBAD. There was no in-hospital mortality difference between open repair and TEVAR (5.6% versus 3.3%, P = .464) for elective admissions. Hospitals performing thirty or more TEVAR procedures annually had lower mortality for emergent TBAD than hospitals with fewer than thirty procedures.
Conclusions. TEVAR produces better in-hospital outcomes in emergent TBAD than open repair, but further longitudinal analysis is required
Action perception theory of cognition and communication
A new perspective on cognition views cortical cell assemblies linking together
knowledge about actions and perceptions not only as the vehicles of integrated
action and perception processing but, furthermore, as a brain basis for a wide
range of higher cortical functions, including attention, meaning and concepts,
sequences, goals and intentions, and even communicative social interaction.
This article explains mechanisms relevant to mechanistic action perception
theory, points to concrete neuronal circuits in brains along with artificial
neuronal network simulations, and summarizes recent brain imaging and other
experimental data documenting the role of action perception circuits in
cognition, language and communication
ДЕТСКО-РОДИТЕЛЬСКИЕ ОТНОШЕНИЯ В МАТЕРИНСКОЙ СЕМЬЕ
Nowadays there is tendency to an increase in the number of children born without a father. The article presents the results of studying child-parent relations in an uncomplete (maternal) family.The aim of the study is identify the type of parental relationship in the maternal family.The subject of this work is parent-child relationships in the maternal family. The subjects of the study were 60 teenagers and 60 single mothers living in rural area of the Republic of Sakha (Yakutia).The research was carried out with the use of psychodiagnostic questionnaire "Parents behavior and attitude towards them" (ADOR – abbreviated adolescents about parents), questionnaire of the paternal relationship (A.Ya. Varga, V.V. Stolin), method for studying the structure of an integral individuality on 120 symptoms (T.F. Basylevich).There were marked the styles of relationship with adolescent children preferred by the alone mothers. It was found that the negative or positive perception of paternal relationship largely depends on the sex of adolescents: the mother`s desire to infantilize the child is perceived by the boys as negative, by the girls as positive. Differences also exist in the indicators within the same sex, depending on the set-up structure of adolescent individuality. Mothers of sons belonging to the I typological syndrome of individuality are more disposed to ignorance than mothers of boys with the II typological syndrome. The mother`s desire to infantilize an extroverted son is perceived by him as hostile one, i.e. aggressive and excessive severity on the side of mother in interpersonal relationships.The results of study can be used by school psychologists and educators in their practical work.В настоящее время наблюдается рост количества детей, родившихся без отца. В статье представлены результаты изучения детско-родительских отношений в неполной (материнской) семье.Целью исследования является выявление типа родительского отношения в материнской семье.Предметом данной работы являются детско-родительские отношения в материнской семье. Объектами исследования были 60 подростков и 60 одиноких матерей, проживающие в сельском районе Республики Саха (Якутия).Исследование детско-родительских отношений было проведено с помощью опросника «Поведение родителей и отношение подростков к ним» (ADOR-сокращенно, подростки о родителях, опросник родительских отношений (А.Я. Варга, В.В. Столин), методика изучения структуры интегральной индивидуальности по 120 симптомам (Т.Ф. Базылевич).Выделены предпочитаемые одинокими матерями типы взаимоотношений с детьми подросткового возраста. Обнаружено, что негативное или положительное восприятие родительских отношений в значительной мере обусловлено полом подростков: стремление матери инфантилизировать ребенка воспринимается мальчиками как негативное, девочками как позитивное. Однако различия имеются в показателях внутри представителей одного пола в зависимости от сложившейся структуры индивидуальности подростков. Матери сыновей, принадлежащих к I типологическому синдрому индивидуальности, более склонны к отвержению, чем матери мальчиков с II типологическим синдромом.Результаты исследования могут быть применены школьными психологами и социальными педагогами
Organizational and methodological approaches to development of accounting policy for formation of integrated accounting of interrelated agricultural companies
The purpose of the article is to determine advantages and drawbacks of existing organizational and methodological approaches to development of accounting policy and develop optimal approach to formation of integrated accounting of interrelated agricultural enterprises. For this purpose, the article uses methods of problem and comparative analysis, method of optimization, and methods of graphical presentation of information. The authors conduct comparative analysis of existing organizational and methodological approaches to development of accounting policy of enterprise and develop optimal approach to formation of integrated accounting of interrelated agricultural enterprises. As a result of the research, the authors come to the conclusion that Russian and international approach to development of accounting policy differ from each other, but neither of these approaches is optimal for formation of integrated accounting of interrelated agricultural enterprises. The developed optimal approach to formation of integrated accounting allows unifying the process of development of accounting policy of enterprise and thus is the best for interrelated agricultural enterprises. This approach is oriented at consumers, due to which it is able not only to simplify the process of formation of corporate accounting of interrelated agricultural enterprises but to turn it into the factor of their competitiveness.peer-reviewe
Competency-based approach and competencies in higher education: a theoretical review
Economic changes not only in the country, but also on the world labor market explain the growing demands on young professionals. New requirements for the model and quality of the graduate appear, and new approaches to their competitiveness and effectiveness appear. The authors analyzed the concepts of a competency-based approach, competence, developed characteristic features and the field of implementation of these definitions in higher education. It has been established that a qualitatively new mission, tasks and content of modern education in the new conditions should be focused not only on fundamental knowledge, but also on the formation of practically oriented skills and competencies
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