scholarly journals MODERN TRENDS OF DESIGN, RESEARCH AND USE OF HYDRAULIC MACHINES IN DRIVES OF MECHANISMS AND TRANSMISSIONS (REVIEW ARTICLE)

Author(s):  
Volodymyr Serykov

The work is devoted to an overview of modern trends in the design, research and use of hydraulic machines in the drives of mechanisms and transmissions. The analysis of the use of hydromechanical transmissions has been carried out. The advantages and disadvantages of hydromechanical transmissions in comparison with mechanical ones are described. A brief overview of modern approaches to the design of new products, taking into account the existing information technologies, is carried out. We have analyzed modern software products designed to support the project at different stages of the product life cycle. It has been found that at the present time the appearance of individual variants of highly specialized software with a modern interface for synthesizing the structure of a designed product does not make it possible to solve the problems of synthesis and structural analysis of hydro-mechanical transmissions. A review of the analysis of operational factors affecting the fault tolerance and operating parameters of hydrostatic transmissions in general and hydromechanical transmission in particular is carried out. We have also considered the examples of technical solutions that allow to reduce the number of failures associated with the influence of one factor or another, as well as allow to reduce its influence on the parameters of the mechanism. The analysis of sources with information on the study of the parameters of hydrostatic transmissions using field tests or the mathematical apparatus developed by the authors is carried out. The ways of solving problems arising at the stages of design research are outlined. Keywords: design, hydrostatic transmission, hydromechanical transmission, influence of operational factors, synthesis

2021 ◽  
pp. 20-26
Author(s):  
N. Yu. Barkova

The article considers key information and communication technologies used in the supply chains of the fashion industry. The author segmented these technologies into several groups, including selected programs that ensure effective communication between the company’s functional departments and supply chain links; software resources aimed at maintaining logistics operations, such as production, warehousing, cargo transportation; operational and strategic planning systems. The main purpose of the considered information technologies is to take into account the specific characteristics of the “fashion” business, such as a high range and a short product life cycle, the need to take into account the rapidly changing requirements of buyers of goods in the fashion industry, the geographical distribution of supply chain participants. The author performs a review of key software products and technologies that improve the efficiency of business process management in the supply chains of the fashion industry, including CAD and CAM systems, ERP systems on the example of SAP AFS, SAP Fashion Management and some other software resources and technologies.


2021 ◽  
pp. 17-20
Author(s):  
Vadym RATYNSKYI

The issues of application of new information technologies in accounting are considered. Peculiarities of automated accounting in the conditions of domestic reality are singled out, methodical principles of informatization of administrative activity are shown. The classification of software products used for automation of accounting is made, the rating of the most widespread programs for informatization of administrative activity in our country is resulted. The main advantages and disadvantages of using information technology in the organization of accounting are shown. Problems of automation of administrative activity at transition to the international standards are considered. A critical assessment of well-known authors and scientists of the modern level of automated accounting in economics is given. Particular attention is paid to the use of remote hardware and software resources in solving problems of informatization of management. Prospects of application in the account of the expert systems constructed on the basis of high-level software products are considered. Some problems of information protection that pose a threat to the use of information technology in management tasks are highlighted. The role of the person in the automated system of accounting, irreplaceability of experience and professionalism of the accountant at any level of development of information technologies is shown. All this makes it possible to create a single information space for the enterprise. Studies have shown that only the integrated development of conceptual accounting models, transformed into mathematical and algorithmic models, in combination with information technology will make it possible to raise accounting to a higher level. Thus, the development of information technologies and the digitalization of the economy make it possible to change the functions performed by accounting services and transform accountants from information input operators into economists-controllers and information users.


2021 ◽  
Vol 26 (3(88)) ◽  
Author(s):  
Anna Chkan ◽  
Natalya Kyrychenko ◽  
Polina Kasai

In the article the essence of defenitions “digitalization”, “digitization” and “virtualization” of business processes are determined. The author proves that all these areas of activity are the stages of the modern information revolution in the business environment. It is determined that digitization involves the conversion of analog data on paper into digital format, and digitalization is the introduction of modern innovative information technologies, software products, IT solutions in the activity of enterprises. All these processes are aimed at optimizing the management of enterprises. Both of them are the basis of the virtualization of modern business. The article summarizes the reasons for the need to digitalize business processes: the necessity of quick adaption to the changes in consumers’ demands, of establishment of strong relationships with them, of building effective communication with external market participants and employees, of coordination and organization of remote work of employees. As a result of the research in the article the basic tools and technologies of digitalization of business processes of the modern enterprise of any form of ownership, the size and sphere of activity are generalized: planning and setting tasks for staff, document management and information exchange, communications between employees and management, organization of meetings, seminars, webinars, sales of products and services, establishing and maintaining relationships with customers, evaluation of competitors, partners and own efficiency, comprehensive organization of office work remotely. In the work the comparative analysis of various tools and technologies are carried out (messengers as tools for digitalization of business processes, services for video conferencing), the advantages and disadvantages of them are revealed. According to the results of the study, the advantages of digitalization are determined. These advantages are: acceleration of all business processes at the enterprise, reduction of expenses for operational activity due to its considerable optimization, reduction of time for implementation of bureaucratic procedures. All this creates significant competitive advantages for the company in the market, its compliance with the requirements of the time and the needs of consumers, and accordingly is the basis for management efficiency.


Author(s):  
Anton Koshelev ◽  
Ekaterina Rusakova

A significant leap in the development of information technology over the past twenty years has made the global legal community respond to new challenges that have come along with the progress in the digital environment. Together with the convenience of using electronic resources, society has developed a need for a simple and understandable legislative regulation of legal relations arising from the use of computer information technologies and various products of electronic digital activity in order to protect their interests potentially. The concept and types of electronic evidence in civil proceedings in different countries have different meanings. Meanwhile, the regulations of their procedural admissibility and applicability differ. The common thing is the tendency towards an increase in the use of electronic information carriers in court proceedings, increasing importance for establishing specific facts, and the decisive evidentiary role in making decisions by the court. India became one of the first countries to realize the growing level of implementation of Internet technologies, electronic digital storage media, and computer dominance in society and the state's daily life [1] (Artemyeva, Y.A. et al.). The consequence of this understanding was the timely development and implementation of the substantive and procedural bases in evidence law for practical, understandable, and convenient use of electronic evidence in civil proceedings. The article examines the types and procedural status of electronic evidence and analyzes the current legislation and law enforcement practice in the admissibility and application of electronic evidence in civil proceedings in India. The study identifies the existing system of electronic evidence in the legal field of India, the determination of the advantages and disadvantages in the gathering, presentation, research, and evaluation of electronic evidence by the court in civil proceedings, as well as the identification of the procedural order for their provision. The researchers have identified the following tasks to achieve the goals: • to define and research the legislation of India governing the concept, types and procedural order of applicability and admissibility of electronic evidence in civil proceedings in India; • to develop a particular procedural order for the effective use of the institution of electronic evidence in civil litigation in India; • to identify the current trends in the gathering, presentation, research, and evaluation of electronic evidence in India's courts, based on the established judicial practice study. The research methodology is based on general theoretical and scientific methods of cognition, including abstraction and specification, analysis and synthesis, modeling and comparison, and systemic, logical, and functional analyzes. The scientific novelty of the research consists of a comprehensive study of the instruments of legal regulation of the institution of electronic evidence in India's legal field, including regulatory legal acts and judicial precedents, and a consideration of the possibility of applying Indian approaches in the jurisdictions of other countries. The analysis of legislation and jurisprudence regarding electronic evidence in India's civil proceedings was carried out using the synergistic principle of object study, statistical-sequential analysis, and empirical research method. This study's results can be used in lawmaking to develop and improve regulations regarding the procedural status and use of electronic evidence in civil litigation in any country. The reference, citation, and use of this article's conclusions and materials are permissible when conducting lectures and seminars on civil procedure and private international law, research activities, law enforcement practice, and teaching.


2017 ◽  
Vol 6 (7) ◽  
pp. 5426 ◽  
Author(s):  
Hiren J. Patel ◽  
Vaishnavi P. Parikh

The pharmaceutical industry has faced several marked challenges in order to bring new chemical entities (NCEs) into the market over the past few decades. Various novel drug delivery approaches have been used as a part of life cycle management from which Osmotic drug delivery systems look the most promising one. After discussing the history of osmotic pump development, this article looks at the principles, advantages and disadvantages of osmotic drug delivery systems. Then, the basic components of osmotic pump and factors affecting the design of oral osmotic drug delivery systems are discussed in detail. In the later part of the manuscript, various types of osmotic pumps available in the market and evaluation methods for osmotic drug delivery systems are discussed in detail.


2020 ◽  
Vol 22 (1) ◽  
pp. 26-32
Author(s):  
ALIKHAN М. BAIMENOV ◽  

The article emphasizes that modern governments, working in unique socio-economic, historical and cultural conditions, must take into account global trends, as well as the growth of citizens’ expectations associated with the rapid development of information technologies and other factors. In such circumstances, special attention is paid to the effectiveness of public administration. The article discusses some of the significant factors impacting the effectiveness of public administration, such as the professionalization of the state apparatus, the legibility of the institutional framework, the optimization of information flows and corporate culture. In accordance with this, on the basis of work experience in the public administration system and analysis of civil service reforms in the countries of the region, the main challenges and possible solutions are shown. In the professionalization of the state apparatus, the importance of the merit principles in the selection and promotion stages of personnel through the empowerment of human resource (HR) management services, the integrity of tools and approaches at all stages of selection process, and the responsibility of the selection board are noted. The author focuses on the need to ensure a balance of powers, responsibility and resources, delimitation of powers between political and administrative civil servants, optimization of information flows. Particular importance is paid to corporate culture, which is one of the main factors affecting the efficiency of the state apparatus. It is noted that central values of corporate culture and leadership in state bodies of the countries of our region, along with generally accepted in the modern leadership theory, should be respect for the dignity, work and time of employees.


2012 ◽  
Vol 212-213 ◽  
pp. 1057-1061 ◽  
Author(s):  
Zhong Liu ◽  
Zhu Qing Huang ◽  
Shu Yun Zou ◽  
Hong De Rao

The 3# bulb turbine in Hongjiang Hydropower Plant has faced the problem of output deficiency since its commission in Sept. 2003, which caused a large economic loss. Following simple theoretical analyses on the main factors affecting the turbine’s output and efficiency, the field test schemes were determined to measure the shapes and intervals of guide vanes and runner blades of the 3#, 5# and 6# turbines. The test results discover that the average blade intervals of the 3# turbine are generally less than those of the 5# one. Suggestions on runner blade installation adjustment and combined curve modification are given.


Author(s):  
Katarzyna Markowska-Lech ◽  
Wojciech Sas ◽  
Mariusz Lech ◽  
Katarzyna Gabryś ◽  
Alojzy Szymański

Abstract The shear modulus of soils at small strain (G0) is one of the input parameters in a finite element analysis with the hardening soil model with small strain stiffness, required in the advanced numerical analyses of geotechnical engineering problems. The small strain stiffness can be determined based on the seismic wave velocities measured in the laboratory and field tests, but the interpretation of test results is still under discussion because of many different factors affecting the measurements of the wave travel time. The recommendations and proposed solutions found in the literature are helpful as a guide, but ought to be adopted with a certain measure of care and caution on a case-by-case basis. The equipment, procedures, tests results and interpretation analyses of bender elements (BE) tests performed on natural overconsolidated cohesive soils are presented.


Author(s):  
Olena Osadcha

The article deals with the development of the model of students’ independent work under conditions of distance learning. The importance of the research into this problem is determined, on the one hand, by the growing possibilities of using various information technologies and, on the other hand by the necessity to adapt to the conditions of today’s world where independent work of students is becoming increasingly important. The advantages and disadvantages of distance learning have been explored. The author studied the role of independent work in the formation of the professional competences of students. The issue of modeling in the area of education has been tackled. The approaches to the development of the model of independent work have been identified and analyzed. The components of the model, such as the goal, the tasks, the content, the methods, the means and evaluation of results have been determined and characterized. The prospects of further development of this research are related to the exploration of models of independent work of students majoring in different areas.


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