168 research outputs found
Calculation of rolling radius of rolls in mills with closed calibers of the tube welding aggregate
No full textБуксбаум Виктор Борисович, кандидат технических наук, начальник технического отдела, ОАО «Уралтрубмаш». Тел.: (351)7347352. E-mail: [email protected]
Buksbaum Viktor Borisovich, candidate of engineering science, head of the Engineering department, JSC “Uraltrubmash”. Tel.: (351)7347352. E-mail: [email protected] Усова Мария Викторовна, инженертехнолог, ОАО «Уралтрубмаш». Тел.:(351)7347352. E-mail: [email protected]
Usova Maria Viktorovna, industrial engineer, JSC “Uraltrubmash”. Tel.: (351)7347352. E-mail: [email protected]Предложена методика расчета катающего радиуса валков в клетях с закрытыми калибрами через условие равенства площадей полной поверхности валка в зонах
опережения и отставания. Разработан математический аппарат. Выполнен расчет
катающего радиуса и габаритов верхних валков двух последних клетей (четвертой и
пятой) трубоэлектросварочного агрегата для двух типоразмеров труб.
The technique of calculation the rolling radius of the rolls in mills with closed calibers
is presented by using the equality condition of the full roll’s surfaces in forward slip and
backward slip areas. The mathematical tool is developed. The calculation of rolling radius and dimension of the rolls in two last mills (4th and 5th) of welding aggregate is carried out.ОАО «Уралтрубмаш
Features of Educational and Developmental Activity of Students Under Forced Self-Isolation
No full textThe paper analyses differences in the expression and determination of the educational and developmental activity of students in everyday life and under forced social isolation. The study was conducted on a sample of young students (N=338) aged 16—25 years (M=19.9; SD=2.1), 63.9% female. The following methods were used: the authors’ questionnaire aimed at identifying the intensity of educational and developmental activity in different life conditions; the technique “Activity of personality under forced social restrictions” (by N.V. Usova, I.V. Arendachuk, M.A. Klenova); the technique “Assessment of mental activation, interest, emotional tonus, tension and comfort” (by L.A. Kurgansky, T.A. Nemchin). The study found that under self-isolation the educational and developmental activity of students is higher than in ‘normal’ life. The paper also shows how various psychological features determine such activity. The less the students under self-isolation display educational and developmental activity, the more it is due to reactions of frustration and is further compensated by the transfer of activity to family relationships. Those students who display high educational and developmental activity tend to be more confident of having control over their life. They focus on professional development, recreation and entertainment. More or less, the display of educational and developmental activity of students greatly depends on their psychological and emotional states
Genetic heterogeneity of familial hypercholesterolaemia in two populations from two different countries
No full textBackground: Familial hypercholesterolemia (FH) is a genetically determined monogenic disorder of predominantly autosomal dominant inheritance. A number of studies on differences in the genetic profile of patients with FH have demonstrated the importance of a more substantive evaluation of genetic features. The aim of this study was to evaluate the genetic profile of patients with clinical FH among Italian and Russian patients. Methods: We included 144 Italian and 79 Russian FH patients; clinical diagnosis was based on the same criteria. Patients were divided in: positive to genetic test (one causative variant), inconclusive (only variants of uncertain clinical significance [VUS]), and negative (with likely benign/benign variants, heterozygous variants in LDLRAP1 gene, or without causative variants). Results: The genetic test was positive in 76.4 % of the Italian patients and in 49.4 % of the Russian patients. The presence of VUS alone was detected in 7.6 % and in 19.0 % (p < 0.001), respectively. Among patients with positive genetic diagnosis, pre-treatment LDL-C levels were higher in the Russian cohort (353.5 +/- 111.3 vs. 302.7 +/- 52.1 mg/dL, p = 0.009), as well as the percentage of treated patients (53.8 % vs. 14.5 %, p < 0.001) and the prevalence of premature coronary heart disease (12.8 % vs. 3.6 %, p = 0.039). Among patients carrying only VUS, mean pre-treatment LDL-C levels were similar between the cohorts (299.5 +/- 68.1 vs. 295.3 +/- 46.8 mg/dL, p = 0.863). Among pathogenic/likely pathogenic variants and VUS, only 5 % and 4 % was shared between the two cohorts, respectively. Conclusion: The genetic background of patients clinically diagnosed with FH in two different countries is characterized by high variability
Optimisation of Cycling Trends in Hamiltonian Systems of Economic Growth Models
Get PDFThe paper analyses dynamical growth models predicting the cyclic development of investigated economic factors. The provided research deals with an optimal control problem based on the economic growth model with the production function of Cobb–Douglas type. Following the Pontryagin maximum principle, we derived the Hamiltonian system and conducted its qualitative analysis, which reveals conditions for the cyclic behaviour of the optimal solutions around the isolate steady state. Numerical experiments visually illustrated the obtained results by demonstrating a phase portrait corresponding to a steady state of the focal type. © 2023 by the authors.Ministry of Education and Science of the Russian Federation, Minobrnauka; Russian Science Foundation, RSF: 19-11-00105; Ural Federal University, UrFUResearch of A.M. Tarasyev and A.A. Usova is supported by the Russian Scientific Foundation, Project No 19-11-00105. https://rscf.ru/en/project/19-11-00105/ (accessed on 3 February 2023). Research of A.A. Tarasyev is supported by the research funding from the Ministry of Science and Higher Education of the Russian Federation (Ural Federal University project within the Priority-2030 Program)
Identification of consumer development trends in a major city: a market-based approach
Get PDFThe subject matter of this article consists in a comparative analysis of key indicators of consumer market development in major cities of various Subjects of the Russian Federation, which are located in the same macro-region, taking the first three places in the regional hierarchy according to the population of the RF Subject territory, comprising the centres of large urban agglomerations and making a significant contribution to the formation of regional indicators of socio-economic development. The article is based on Federal State Statistics Service data on three RF Subjects namely, Perm Krai, Sverdlovsk and Chelyabinsk regions covering the period from 2007 to 2015. The study is based on the analysis, classification and systematisation of the information of theoretical sources and statistical data relating to the study, as well as on the presentation of the author’s approaches and conclusions. Thus, within the framework of the research, the author considers different theoretical approaches to the consumer market and proposes a definition for the consumer market of a major city, taking into account the specifics of its functioning as an element of the economy of the city. With regard to the identification of development trends, in the framework of the study, new indices have been applied, such as “index of concentration of stationary retail establishments”, “index of concentration of non-stationary retail establishments”, “index of concentration of public canteens, snack bars”, “index of concentration of canteens owned by the educational institutions, organisations, industrial enterprises” and “index of concentration of restaurants, cafes, bars”. These indices characterise the degree of concentration of different types of retail establishments and catering establishments within a defined territory. According to the research, all cities included in the scope of the study have been grouped according to the identified consumer market development trends. The author has also developed a number of recommendations for the public authorities and local governments for improving the consumer markets of studied cities
Estimation of long coiled tubing durability
No full textБрылкин Андрей Владиславович – коммерческий директор ОАО «Уралтрубмаш», г. Челябинск. E-mail: [email protected]. Brylkin Andrey Vladislavovich is Commercial Director of JSC «Uraltrubmash», Chelyabinsk.
E-mail: [email protected]
Буксбаум Виктор Борисович – кандидат технических наук, начальник технического отдела ОАО «Уралтрубмаш», г. Челябинск.
E-mail: [email protected]. Buksbaum Victor Borisovich is Cand. Sc. (Engineering), Chief of Technical Department of JSC «Uraltrubmash», Chelyabinsk.
E-mail: [email protected].
Колесников Константин Иванович – зам. коммерческого директора ОАО «Уралтрубмаш», г. Челябинск.
E-mail: [email protected]. Kolesnikov Konstantin Ivanovich is Deputy of Commercial Director of JSC «Uraltrubmash», Chelyabinsk.
E-mail: [email protected]
Порошин Вадим Борисович – доцент, кандидат технических наук, кафедра прикладной механики, динамики и прочности машин,
Южно-Уральский государственный университет.
E-mail: [email protected]. Poroshin Vadim Borisovich is Cand. Sc. (Engineering),Associate Professor, Applied Mechanics, Dynamics and Strength of Machines Department,
South Ural State University. E-mail: [email protected]
Усова Мария Викторовна – инженер-технолог ОАО «Уралтрубмаш», г. Челябинск.
E-mail: [email protected]. Usova Maria Viktorovna is Industrial engineer of JSC «Uraltrubmash», Chelyabinsk.
E-mail: [email protected]Рассмотрена методика ускоренных ресурсных (эквивалентных) испытаний длинномерных гибких труб, использующая модель накопления повреждения кинетического типа. Отмечается, что для обеспечения адекватности предлагаемого подхода деформационные и прочностные свойства материала необходимо получать в условиях циклического нагружения. Применительно к технологии колтюбинга выполнен прогноз долговечности для модельного технологического цикла по результатам стендовых испытаний на установке ОАО «Уралтрубмаш». The technique of accelerated resource (equivalent) testing for long coiled tubes is considered. It is based on the kinetic model of damage accumulation. It is noted that to ensure the adequacy of the proposed approach, deformation and strength properties of the material must be obtained under cyclic loading
conditions. Relating to the technology of coiled tubing, life prediction is made for the model technological cycle based on the results of bench tests on the JSC «Uraltrubmash» equipment
Mykolo Romerio mokslinė pozicija dėl Lietuvos Respublikos ir Šventojo Sosto konkordato (1927)
Get PDFStraipsnyje perteikiamas Mykolo Romerio mokslinis teisinis požiūris į 1927 m. Lietuvos Respublikos ir Šventojo Sosto konkordatą (toliau – Lietuvos konkordatas). Šis tyrimas atskleidžia M. Romerio profesinės veiklos Valstybės Taryboje, asmeninės biografijos faktus, susijusius su civilinės metrikacijos problemomis Lietuvos konkordato galiojimo metu, ir mokslinių interesų įtaką jo mokslinės pozicijos šiuo klausimu formavimuisi. Straipsnyje pateikiami duomenys – M. Romerio pozicijos mokslinė argumentacija, Valstybės Tarybos nuomonės Lietuvos konkordato taikymo klausimais, monopolinės bažnytinės metrikacijos Lietuvoje problemos teisiniai aspektai ir mokslinė analizė – yra integruoti į vieningą koncepciją, klasifikuoti ir atspindi griežtą M. Romerio mokslinę poziciją dėl Lietuvos konkordato.Straipsnyje perteikiamas Mykolo Romerio mokslinis teisinis požiūris į 1927 m. Lietuvos Respublikos ir Šventojo Sosto konkordatą (toliau – Lietuvos konkordatas). Šis tyrimas atskleidžia M. Romerio profesinės veiklos Valstybės Taryboje, asmeninės biografijos faktus, susijusius su civilinės metrikacijos problemomis Lietuvos konkordato galiojimo metu, ir mokslinių interesų įtaką jo mokslinės pozicijos šiuo klausimu formavimuisi. Straipsnyje pateikiami duomenys – M. Romerio pozicijos mokslinė argumentacija, Valstybės Tarybos nuomonės Lietuvos konkordato taikymo klausimais, monopolinės bažnytinės metrikacijos Lietuvoje problemos teisiniai aspektai ir mokslinė analizė – yra integruoti į vieningą koncepciją, klasifikuoti ir atspindi griežtą M. Romerio mokslinę poziciją dėl Lietuvos konkordato
The Restrictions on Human Rights of a Professional Athlete, Legal Framework and Problematic Issues.
No full textTiesību zinātneTiesību zinātneLaw ScienceLaw ScienceMaģistra darba tēma ir “Profesionālā sportista cilvēktiesību ierobežojumu tiesiskais regulējums un tā problemātika”. Analizējot Sporta arbitrāžas tiesas nolēmumus, tiek secināts, ka profesionāli sportisti regulāri vēršas šķīrējtiesā, saistībā ar cilvēktiesību pārkāpumiem. Profesionālo sportistu skaits mūsdienās ir pietiekami augsts, lai pievērstu uzmanību tam, ka profesionālajā sportā ir vairāki cilvēktiesību ierobežojumi un pārkāpumi. Ņemot vērā, ka cilvēktiesības nav absolūtas un ir ierobežojamas, autore izvērtēs sportista cilvēktiesību ierobežojumu apmēru un nepieciešamību. Autore darbā mēģina rast risinājumus, lai cilvēktiesību ierobežojumi samazinātos un vai to var panākt ar nacionālā līmeņa normatīvo aktu grozījumiem un papildinājumiem. Darba kopējais lappušu skaits ir 83 lappuses.The subject of the master's work is “The Restrictions of the Human Rights of a Professional Athlete, Legal Framework and Problematic Issues”. An analysis of the rulings of the Court of Arbitration for Sport concludes that professional athletes regularly turn to arbitration, in connection with human rights violations. The number of professional athletes today is high enough to draw attention to the fact that there are a number of human rights restrictions and violations in professional sport. Given that human rights are not absolute and are controlled, the author will assess the extent and necessity of the athlete's human rights restrictions. At work, the author tries to find solutions to reduce human rights restrictions and whether it can be achieved by amendments and additions to national legislation. The total number of pages of work is 83 pages
Mediation for resolving family disputes
No full textNowadays the understanding of the institute of marriage and its importance in the society has changed. Marriage is no longer assumed to be a commitment for a lifetime. As the principle of equality has replaced hierarchy as the guiding principle of family law it gave more grounds for family disputes and it became socially acceptable to leave marriages that are intolerable or merely unfulfilling. The aim of this article is to suggest an alternative dispute resolution method-mediation as a worthy option for resolving family conflicts
EU competition policy in fuel market : Latvia in the context of Europe
No full textDiplomdarbā izpētīta un noteikta konkurences situācija Latvijas degvielas mazumtirdzniecības tirgū, noteikti galvenie tirgus dalībnieki un to ietekme tirgū.
Pētījumā pielietota kvalitatīvā metode, t.i., tika apkopoti nozares viedokļi un analizēti apvienošanās gadījumi nozarē. Vēl nozare tika analizēta, izmantojot M. Portera piecu spēku modeli. Veiktā pētījuma rezultātā tika konstatēts, ka Latvijas degvielas mazumtirdzniecības tirgū pastāv oligopols. Par to liecina tirgus viendabīgā prece, augstas ienākšanas barjeras, kā arī pircēju nespēja ietekmēt produkta cenas. Ietekme tirgū koncentrējas trīs lielāko dalībnieku starpā, un apvienošanās procesu dēļ lielie uzņēmumi pastiprina savas pozīcijas.
Darba apjoms 70 lapas, 11 attēli, 6 tabulas, 47 literatūras avoti.
Atslēgvārdi: Konkurence, degvielas tirgus, oligopols, apvienošanās.The aim of this work was to analyze competition within Latvian fuel retail market, identify the main market players and estimate their market power.
The methodology of this study was qualitative. It included summarizing the opinions of the industry’s experts and analyzing merging cases within the industry. The industry was also analyzed using M. Porters five forces framework. The major conclusion of this work is that there is oligopoly in Latvian fuel retail market. This conclusion is supported by the evidence that the product is homogenous, entry barriers are high and customers have no power to change the price of the product. Market power is concentrated in the hands of the three largest market players who reinforce their positions using mergers.
This work consists of 70 pages, 11 figures, 6 tables, 47 references.
Key words: Competition, fuel market, oligopoly, merger
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