Perfection of rolls sizing in bar & wire rod mill 370/150 to ensure accuracy in rolled product profile

2020 ◽  
Vol 76 (11) ◽  
pp. 1119-1127
Author(s):  
I. A. Pankovets ◽  
M. V. Oborov ◽  
N. A. Khodosovskaya ◽  
M. N. Vereshchagin
Keyword(s):  
Analytical Description ◽  
Rolling Process ◽  
New Method ◽  
Key Factors ◽  
Actual Problem ◽  
Product Profile ◽  
Experimental Rolling ◽  
The Subject ◽  
To Come ◽  
Data Efficiency

An actual problem of production bars with increased geometry accuracy at existing mill 370/150 at OJSC “BMZ -management company of Holding “BMC” has been reviewed. The object of research was reducing-sizing mill, composed of three finishing stands. The subject of research was rolling process in finishing stands aiming at achieving highly accurate geometry in the finished profile. In the work, based on empirical data, efficiency of existing methods of sizing by statistical method to produce a profile of regular accuracy and highly accurate profile was assessed. By the method of finite elements the rolling processes were simulated, approximated to real conditions by means of numerical modeling. Empiric and theoretic data revealed drawbacks of existing systems of sizing, as well as let determine further direction of research. Analytical description of key factors of rolling affecting creation of profile enabled to come to conclusion that the basis for achieving geometry sizes of transversal profile depends on pressure of steel on to rolls and the inter-stand tension. On this basis the new method of sizing has been developed. On the basis of the new method of sizing, rolling processes at different frequencies of rolls rotation were simulated. The process of mathematical simulation to the maximum approximated to real conditions of rolling. Thanks to this it became possible to obtain reliable results of research, enabling to achieve highly accurate geometry of transversal profile. Obtained results of research are the basis for further study of inter-stand deformation to be followed by experimental rolling at mill 370/150.

Program-Target Budgeting as a Tool for Investment Stimulation of Business

2018 ◽  
Vol 11 (3) ◽  
pp. 77-82 ◽  
Author(s):  
A. I. Masterov
Keyword(s):  
Current Practice ◽  
Negative Impact ◽  
Key Factors ◽  
Economic Sectors ◽  
State Budget ◽  
Research Findings ◽  
The Subject ◽  
Program Budgeting ◽  
Large Investment ◽  
Stimulation Of

The paper discusses the use of the program-targeted budgeting methodology in the investment stimulation of business in the most problem sectors of the economy. The subject of the study is the dynamics of business activity in key economic sectors adversely affected by factors of the economic and geopolitical nature. The purposes of the study were to identify the key factors that have a negative impact on economic growth and seek options for investment stimulation of business activities in the most problem sectors of the economy using state budget funds. It is concluded that the current practice of budget investment is associated with significant risks and poor justification of investment decisions. Therefore, the American practice of the program budgeting in the implementation of large investment infrastructure projects using budget funds seems to be advantageous. Based on the research findings, methods for increasing the effectiveness of program-target budgeting tools under the Russian conditions are proposed.

Introduction

2018 ◽  
Author(s):  
Chakravarthi Ram-Prasad
Keyword(s):  
Philosophical Tradition ◽  
Phenomenological Tradition ◽  
The Third ◽  
Western Philosophical Tradition ◽  
The Subject ◽  
To Come

The Introduction outlines the various chapters. It then situates the question of ‘body’ in the modern Western philosophical tradition following Descartes, and argues that this leaves subsequent responses to come under one of three options: metaphysical dualism of body and subject; any anti-dualist reductionism; or the overcoming of the divide. Describing the Phenomenology of Merleau-Ponty as a potent example of the third strategy, the Introduction then suggests his philosophy will function as foil to the ecological phenomenology developed and presented in the book. Moreover, one approach within the Western Phenomenological tradition, of treating phenomenology as a methodology for the clarification of experience (rather than the means to the determination of an ontology of the subject) is compared to the approach in this book. Since classical India, while understanding dualism, did not confront the challenge of Descartes (for better or for worse), its treatment of body follows a different trajectory.

scholarly journals Innovative Method for Calculating the Break-Even for Multi-Assortment Production

Energies ◽  
2021 ◽  
Vol 14 (14) ◽  
pp. 4213
Author(s):  
Dariusz Fuksa
Keyword(s):  
Coal Mines ◽  
New Method ◽  
Hard Coal ◽  
Customer Demand ◽  
Innovative Method ◽  
The Subject ◽  
Economic Health ◽  
Production Plans ◽  
A Company ◽  
A Current

The subject of the article is a new method that I have developed for calculating a multi-asset break-even for multi-assortment production, extended by a percentage threshold and a current sales ratio (which was missing in previously published methods). The percentage threshold provides unambiguous information about the economic health of a company. As a result, it became possible to use it in practice to evaluate the activities of economic entities (mines) and to perform modelling and optimisation of production plans based on different variants of customer demand scenarios. The publication addresses the complexity of the problem of determining the break-even in multi-assortment production. Moreover, it discusses the practical limitations of previous methods and demonstrates the usefulness of the proposed method on the example of hard coal mines.

scholarly journals A LOOK INTO CIRCULAR ECONOMY RESEARCH: EXPLORING THE BIO AND TECHNO CYCLES AND THE NEED FOR DUAL CIRCULARITY

2021 ◽  
Vol 1 ◽  
pp. 121-130
Author(s):  
Julija Metic ◽  
Tim C. McAloone ◽  
Daniela C. A. Pigosso
Keyword(s):  
Circular Economy ◽  
Biological Cycle ◽  
Systematic Analysis ◽  
Technological Cycle ◽  
Business Perspective ◽  
Subject Areas ◽  
The Subject ◽  
To Come

AbstractThis study undertakes a systematic analysis of literature within Circular Economy (CE) in an industrial perspective, with a focus on understanding the consideration of the biological and technological cycles, as well as dual circularity. The paper articulates the key research differences, gaps and trends on the basis of publication evolution, key subject areas, influential journals and keywords co-occurrence mapping. The analysis shows the increasing publication trend with dominance of technological cycle and a wide variety of subject areas incorporated in CE biological, technological and dual cycles. Due to the multidisciplinary and transversal nature of CE, as well as its diverse interpretation and applications, an expansion and consolidation of the subject areas and journals are expected in the years to come. Analysis of co-occurrence on the authors' keywords underlined a limited focus of a business perspective research within the biological cycle, heterogeneous and proactive technological cycle but fragmented research on dual circularity. Further analysis of synergies and limitations is necessary to enhance business effectiveness towards enhanced sustainability.

Measurement of the Interfacial Stresses in Rolling Using the Elastic Deformation of the Roll

1987 ◽  
Vol 109 (4) ◽  
pp. 362-369 ◽  
Author(s):  
D. J. Meierhofer ◽  
K. A. Stelson
Keyword(s):  
Elastic Deformation ◽  
Normal Pressure ◽  
New Method ◽  
Frictional Stress ◽  
Stress Distributions ◽  
Strain Gages ◽  
Experimental Rolling ◽  
Mechanical Isolation ◽  
Roll Gap ◽  
Future Work

A new method to measure the frictional stresses and normal pressure in the roll gap during cold rolling, and experimental verification of this new method, are presented. The method overcomes many of the shortcomings of pin-type sensors. The elastic deformation of the roll itself is measured with strain gages, and is used to calculate the stresses between the sheet and the roll. Since no modification of the roll is necessary, the deformation process is undisturbed by the measurement. Mechanical isolation of the sensor is unnecessary. The mathematical procedure used to calculate the normal pressure and frictional stresses from the measured strains explicitly acknowledges that these strains are the result of the entire distribution of pressures and shears in the roll gap. An experimental rolling mill was constructed to verify the proposed method. Lead was rolled, and the resulting pressure and frictional stress distributions in the roll gap were measured. Several features of these distributions are in agreement with measurements made by various investigators using other techniques, thereby confirming the usefulness of the new method. Future work is proposed to increase the accuracy with which the roll gap stresses may be measured.

The Collecting and Recording of Descriptive and Anthropometric Data of the Ear in the Neurotic, Insane, and Criminal—a New Method

1898 ◽  
Vol 44 (185) ◽  
pp. 241-247
Author(s):  
John R. Lord
Keyword(s):  
New Method ◽  
Anthropometric Data ◽  
The Subject

The writings of Morel, Wildermuth, Binder, Gradengo, Vali, Frigerio, Eyle, Schwalbe, have familiarised us with several types of ear; and this, together with Bertillon's work, perhaps forms the bulk of our knowledge on the subject. Recently, in America, good summaries have been published by Meyer and Peterson.

John von Neumann and the Evolutionary Growth of Complexity: Looking Backward, Looking Forward

2000 ◽  
Vol 6 (4) ◽  
pp. 347-361 ◽  
Author(s):  
Barry McMullin
Keyword(s):  
Subsequent Development ◽  
Early Death ◽  
Problem Situation ◽  
John Von Neumann ◽  
Von Neumann ◽  
Comprehensive Theory ◽  
History Of ◽  
The Subject ◽  
To Come ◽  
Evolutionary Growth

In the late 1940s John von Neumann began to work on what he intended as a comprehensive “theory of [complex] automata.” He started to develop a book length manuscript on the subject in 1952. However, he put it aside in 1953, apparently due to pressure of other work. Due to his tragically early death in 1957, he was never to return to it. The draft manuscript was eventually edited, and combined for publication with some related lecture transcripts, by Burks in 1966. It is clear from the time and effort that von Neumann invested in it that he considered this to be a very significant and substantial piece of work. However, subsequent commentators (beginning even with Burks) have found it surprisingly difficult to articulate this substance. Indeed, it has since been suggested that von Neumann's results in this area either are trivial, or, at the very least, could have been achieved by much simpler means. It is an enigma. In this paper I review the history of this debate (briefly) and then present my own attempt at resolving the issue by focusing on an analysis of von Neumann's problem situation. I claim that this reveals the true depth of von Neumann's achievement and influence on the subsequent development of this field, and further that it generates a whole family of new consequent problems, which can still serve to inform—if not actually define—the field of artificial life for many years to come.

scholarly journals A Modular Mobile Robotic Platform to Assist People with Different Degrees of Disability

2021 ◽  
Vol 11 (15) ◽  
pp. 7130
Author(s):  
Jose M. Catalan ◽  
Andrea Blanco ◽  
Arturo Bertomeu-Motos ◽  
Jose V. Garcia-Perez ◽  
Miguel Almonacid ◽  
...  
Keyword(s):  
Activities Of Daily Living ◽  
Daily Living ◽  
Occupational Therapists ◽  
Living Room ◽  
Key Factors ◽  
Robotic Platform ◽  
Robotic Exoskeleton ◽  
Simulated Home Environment ◽  
Wheel Chair ◽  
The Subject

Robotics to support elderly people in living independently and to assist disabled people in carrying out the activities of daily living independently have demonstrated good results. Basically, there are two approaches: one of them is based on mobile robot assistants, such as Care-O-bot, PR2, and Tiago, among others; the other one is the use of an external robotic arm or a robotic exoskeleton fixed or mounted on a wheelchair. In this paper, a modular mobile robotic platform to assist moderately and severely impaired people based on an upper limb robotic exoskeleton mounted on a robotized wheel chair is presented. This mobile robotic platform can be customized for each user’s needs by exploiting its modularity. Finally, experimental results in a simulated home environment with a living room and a kitchen area, in order to simulate the interaction of the user with different elements of a home, are presented. In this experiment, a subject suffering from multiple sclerosis performed different activities of daily living (ADLs) using the platform in front of a group of clinicians composed of nurses, doctors, and occupational therapists. After that, the subject and the clinicians replied to a usability questionnaire. The results were quite good, but two key factors arose that need to be improved: the complexity and the cumbersome aspect of the platform.

SUDDEN AND UNEXPECTED DEATH IN INFANCY: A REVIEW OF THE WORLD LITERATURE 1954-1966

PEDIATRICS ◽  
1967 ◽  
Vol 39 (1) ◽  
pp. 123-138
Author(s):  
Marie A. Valdes-Dapena
Keyword(s):  
United States ◽  
World Literature ◽  
The United States ◽  
Large Series ◽  
Human Race ◽  
Unexpected Death ◽  
The World ◽  
The Subject ◽  
To Come

It is apparent that we are still woefully ignorant with respect to the subject of sudden and unexpected deaths in infants. Only by continual investigation of large series of cases, employing uniform criteria to define such deaths and using the investigative procedures outlined above as well as others which will undoubtedly suggest themselves, can we hope to understand and possibly prevent the deaths of some 15,000 to 25,000 infants in the United States each year. These lives, to say nothing of those in other countries throughout the world might provide some of the leadership which is necessary to maintain and advance the human race in the years to come.

‘Couldn’t it happen in Switzerland?’ : The East African Revival and Swiss Church Life in the 1940s and 1950s

2021 ◽  
Vol 30 (1) ◽  
pp. 119-141
Author(s):  
Ian Randall
Keyword(s):  
Medical Doctor ◽  
Grand Nombre ◽  
Doctor Who ◽  
East African ◽  
Cambridge University ◽  
Church Life ◽  
The Subject ◽  
To Come ◽  
The 1960S ◽  
Spiritual Movement

Summary The East African Revival was a major spiritual movement which started in the 1930s. Joe Church, a medical doctor who had been at Cambridge University, was a central figure and gathered a very large amount of material about the Revival. The connection of the Revival with Switzerland, which has not previously been studied, is the subject of this article, which draws from the Joe Church archive. The connection came about through Berthe Ryf (1900-1989), a missionary nurse in what was then Ruanda-Urundi who on returning to her native Switzerland in 1939 spoke in Swiss churches over a period of five years about the powerful experiences in East Africa. As a result, there were invitations for teams of Europeans and Africans to come to Switzerland. From 1947 onwards many meetings were held, addressed by those who had participated in the Revival. This article explores developments from the 1930s to the 1960s.ZusammenfassungDie ostafrikanische Erweckung war eine größere geistliche Bewegung, die in den Jahren nach 1930 begann. Der Arzt Joe Church, der von der Universität Cambridge kam, war eine führende Figur; er trug eine beträchtliche Menge an Material über die Erweckung zusammen. Die Verbindung dieser Erweckung mit der Schweiz war zuvor noch nicht untersucht worden und stellt das Thema dieses Artikels dar, der mit Material aus dem Joe Church Archiv arbeitet. Diese Beziehung kam zustande durch Berthe Ryf (1900-1989), eine Krankenschwester und Missionarin in dem damals sogenannten Ruanda-Urundi; sie sprach nach ihrer Rückkehr fünf Jahre lang über die kraftvollen Erfahrungen, die sie in Ostafrika gemacht hatte. Infolge dessen gingen Einladungen an Teams von Europäern und Afrikanern, in die Schweiz zu kommen. Von 1947 an gab es viele Veranstaltungen, von jenen gehalten, welche an der Erweckung teilgenommen hatten. Der vorliegende Artikel erforscht die Entwicklungen in den Jahren um 1930 bis um 1960 herum.RésuméLe Réveil en Afrique orientale (East African Revival) est un mouvement spirituel majeur qui débuta dans les années trente. Joe Church, un médecin formé à l’Université de Cambridge, en fut un personnage clé. On lui doit d’avoir collecté un très grand nombre de documents sur ce Réveil. Le sujet de cet article est le rapport entre le Réveil et la Suisse, un thème étudié ici pour la première fois sur la base des archives de Joe Church. Ce lien a été établi grâce à Berthe Ryf (1900-1989), une infirmière missionnaire dans ce pays appelé alors Ruanda-Urundi, qui, après son retour en Suisse, en 1939, fit pendant cinq ans le tour des Églises pour témoigner des expériences bouleversantes que vivait l’Afrique orientale. Le résultat fut que des équipes d’Européens et d’Africains furent invitées à venir en Suisse. À partir de 1947, de nombreuses réunions furent organisées dans lesquelles prenaient la parole ceux qui avaient participé au Réveil. Cet article explore les développements observés des années trente aux années soixante.

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