Methodology of adjusting the strategy of technical systems maintenance and repair according to the results of their operation

In the publication the authors solve the problem of forming the optimal volume of control actions to maintain the technical systems (TS) service availability. To achieve the desired result the analysis of the TS as a service object was carried out. As a result of the analysis the system elements with a level of reliability below the required level are assigned to a separate group for which the maintenance modes are formed later, their actual state being taken into account. Namely, the decision is made what work on these elements can perform and what forces and means of the technical support system will be required for their operation. To form a list of necessary operations, the functional scheme analysis of the TS considered is carried out, during the analysis the functional as well as degradation characteristics of the system elements are determined as well as the significance (weight) of each element in the system. The analysis of the functional scheme of the TS is performed by using the functional-topological method.

A COMPARATIVE STUDY OF THE USABILITY OF DIFFERENT PRODUCTION SCHEDULING ALGORITHMS AND RULES

Production scheduling optimization is a very important part of a production process. There are production systems with one service object and systems with multiple service objects. When using several service objects, there are systems with service objects arranged in a parallel or in a serial manner. We also distinguish between systems such as flow shop, job shop, open shop and mixed shop. Throughout the history of production planning, a number of algorithms and rules have been developed to calculate optimal production plans. These algorithms and rules differ from each other in the possibilities and conditions of their application. Since there are too many possible algorithms and rules it is not easy to select the proper algorithm or rule for solving a specific scheduling problem. In this article we analyzed the usability of 33 different algorithms and rules in total. Each algorithm or rule is suitable for a specific type of problem. The result of our analysis is a set of comparison tables that can serve as a basis for making the right decision in the production process decision-making process in order to select the proper algorithm or rule for solving a specific problem. We believe that these tables can be used for a quick and easy selection of the proper algorithm or rule for solving some of the typical production scheduling problems.

DP-TABU: an algorithm to solve single-depot multi-line vehicle scheduling problem

A DP-TABU algorithm is proposed which can effectively solve the multi-line scheduling problem of single Deport (SD-ML-VSP). The multi-line regional coordinated dispatch of the single-line deport of the bus is to solve the problems of idle low-peak vehicles and insufficient peak capacity in single-line scheduling. The capacity of multiple lines at the same station is adjusted to realize resource sharing such as timetables, vehicles, and drivers. Shared capacity such as bus departure intervals and bus schedules. Taking the regional scheduling of multiple lines at the same station as the service object, a vehicle operation planning model based on the objective of optimal public transportation resources (minimum bus and driver costs) is established to optimize the vehicle dispatching mode of multiple lines. We applied this algorithm to the three lines S105, S107, and S159 of Zhengzhou Public Transport Corporation, and the results proved that the algorithm is effective. Through comparison with manual scheduling and simulated annealing algorithm, the advantages of DP-TABU algorithm in performance optimization and robustness are further verified.

Problem of angular motion control of a non-cooperative on-orbit service object

The realization of existing projects of on-orbit servicing and the development of new ones is a steady trend in the development of space technology. In many cases, on-orbit service clients are objects that exhibit an undesired rotary motion, which renders their servicing difficult or impossible. The problem of on-orbit service object motion control determines the topicality of studies aimed not only at the refinement of methods and algorithms of controlling both the translational and the rotary motion of an object, but also at the development and refinement of methods of onboard determination of the object – service spacecraft relative motion parameters. This paper overviews the state of the art of the problem of object motion parameter determination in on-orbit servicing tasks and existing methods of object motion control and angular motion damping and specifies lines of further investigations into the angular motion control of non-cooperative service objects. Based on the analysis of publications on the subject, the applicability of onboard means for object motion parameter determination is characterized. The analysis of the applicability of methods of remote determination of the parameters of an unknown non-cooperative object from a service spacecraft shows that they are at the research stage. The input data for the verification of methods proposed in the literature were simulated or taken from ground experiments or previous missions. Contact and contactless methods of angular motion control of non-cooperative on-orbit service objects are considered. From the state of the art of investigations into the contactless motion control of on-orbit service objects it may be concluded that the most advanced contactless method of motion control of an on-orbit service object is a technology based on the use of an ion beam directed to the object from an electrojet engine onboard a service spacecraft. Lines of further investigations into non-cooperative object motion control are proposed.

PERAN MAINTENANCE DALAM MEMODERASI PENGARUH TQM TERHADAP KINERJA PERUSAHAAN BOUNTY CRUISES DI PELABUHAN BENOA

Company performance is a condition produced by a company with reference to the company's performance appraisal standards. Performance is used as an evaluation material for management of the quality and level of organizational performance. In managing quality, companies need to implement a quality management system, namely Total Quality Management (TQM). Companies also need to pay attention to the maintenance of a service object in order to keep it functioning properly. This study aims to determine the performance of companies that are affected by TQM and the role of maintenance in strengthening or weakening the influence of TQM on company performance. This study used a saturated sample of 96 crew / staff through interviews and questionnaires with the data analysis techniques used, namely Factor Analysis and Moderated Regression Analysis (MRA). This study results in a maintenance role that can strengthen the influence of TQM on company performance. The results of this study can guidelines through the implementation of maintenance and quality dimensions. Keywords: TQM, Maintenance, Company Performance.

The basis for placing a roadside service object in a municipal area

As international experience and Russian practice of creating an investment climate show, the effectiveness of the efforts of the local government level is of decisive importance when investors choose their production locations and implement other direct investments. The paper discusses topical issues of investment attractiveness of placing a roadside service facility on a land plot. Issues related to the implementation of the investment program of the Berdyuzhsky municipal district of the Tyumen region, namely the development of roadside services, including the analysis of urban planning documentation and territories of municipalities, urban planning (territorial) planning, planning and development of the territory, as well as actions to establish requirements for the considered land plots.

Cases on Research Support Services in Academic Libraries

Peking University Library (the Library) conducts organizational restructuring in 2019, and the Collaborative Service Center (CCS) is designated as the provider of research support services, which is operated in interaction with the talent training system and the process of comprehensive reform. A string of innovations in research support services are implemented by CCS's two teams in an overall manner. This chapter introduces status of research support services in China and the Library's practices in research support services. This chapter introduces the new framework of the research support services from four aspects—service object, service provider, service content, and service strategy—and outlines its plans and visions for further efforts in this regard.

Implementation of environmental measures in the study of pre-design situations on the example of a roadside service facility

When solving project tasks, it is necessary to take into account the maximum number of possible solutions that contribute to the efficiency of the object. When analyzing the activity of multifunctional objects, such solutions are all the more important, since they allow, taking into account the specific features of the object, to make the most rational design decision, especially if these solutions are associated with the ability to solve environmental and energy-efficient problems. The decisions made can take into account both the operation of the object itself and the infrastructure that provides the solution with the necessary engineering solutions. The most difficult thing in making project decisions is to systematize the studied situations and analyze informative sources. Systematization of methods of pre-project analysis, generalization of the experience of project work on the example of designing a roadside service object. Wepropose forms that facilitate the structuring of information sources, as well as logical tables that give an idea of the specifics of the choice of positions and directions that allows quickly come to an understanding of how to implement project tasks. Awareness of the methods that allow organizing the logic and sequence of design processes in design and architectural design allows the author to identify the most important problems from his point of view and fit them into the range of design tasks. The search for answers to these problems is formed by ways of structuring information and displaying it in pictorial structures, where the word takes on the meaning of a specific symbol, in a chain of connections that determine the understanding of the integral process of functioning of the future object, taking into account all aspects of its activity.

STATISTICAL ANALYSIS OF THE RECEIVABLES OF ENTERPRISES OF HOUSING AND COMMUNAL SERVICES: ACCOUNTING SUPPORT

The branch characteristics of activity of the enterprises of housing and communal services are defined with features of management of receivables: its absence of alternative concerning partially rendered services to consumers that would directly influence reduction of incomes of the enterprise of housing and communal services; its impossibility of resale of services, lack of clear control over the quality of services provided and its price, which leads to dissatisfaction with the social needs of the population; its lack of flexible discounts for honest payers of housing and communal services. The analysis of the structure of receivables of the population for the consumed housing and communal services of the enterprises of the Lviv region during April-August 2020 is carried out. It is established that the use of inefficient methods of housing management leads to low payment discipline of buyers, which contributes to the deterioration of the financial condition of the industry as a whole. Therefore, methods of accelerating the payment of receivables with appropriate reporting on the quality of services provided should be actively used. The dynamics of the amount of funds for which agreements on debt restructuring for housing and communal services have been concluded, and the amount repaid by consumers-debtors indicates increased activities on concluding contracts and gradual repayment of debts by consumers. In case of overdue receivables for housing and communal services, the consumer should be reminded of the need to pay the debt in different ways. These are in the form of a re-receipt, correspondent (send by registered mail on demand), SMS, or call, or direct visit of the housing and communal services department representative to the service object, and finding out the cause of existing receivables, the order of criteria for their classification into doubtful and bad types of receivables. The purpose of the research is to identify sectorial characteristics of housing and communal services, which determine the features of receivables management and improve the methodology of statistical analysis of receivables to identify causes of late payment of housing and communal services and ways to motivate consumers to repay debts. Methodology. The method of statistical analysis of receivables is developed to be carried out in three stages: analysis of the structure of receivables; analysis of the dynamics of receivables for communal services; analysis of the effectiveness of receivables restructuring. Results. The following stages of statistical analysis of receivables for housing and communal services are offered. Analysis of the structure of receivables to determine the types of housing and communal services for which we observe the largest and smallest share in total is proposed. Analysis of the dynamics of receivables for communal services to determine trends in indicators in the regional aspect is suggested. Analysis of the effectiveness of the restructuring receivables (provides for the calculation of the increase in the number of agreements on debt restructuring and assessment in the dynamics of repayment of these receivables) is proffered. Practical implications. We identified effective management methods of receivables of housing and communal services that improves the financial condition of the industry as a whole. Value/originality. The statistical analysis of the receivables of enterprise of housing and communal services has been further developed.

“Touching” services: tangible objects create an emotional connection to services even before their first use

Although research suggests that physical elements of the servicescape play an important role in the service process, there is little research on the impact of tangible objects that companies give to consumers such as membership cards, pens, mugs, or fashion articles. Drawing on research about embodied cognition, this paper investigates how and under which conditions the provision of tangible service objects affects consumers. Three experimental studies were conducted, in which participants received different objects they could either touch or just see. These studies indicate that touching a service object metaphorically translates into a perceived mental connection towards the service. More specifically, physically connecting to a service object leads to a stronger psychological connection to the corresponding service, which, in turn, increases behavioral intentions. The results also demonstrate that providing a tangible object only has an impact when the object is of high aesthetic appeal. These findings suggest that providing tangible service objects is an effective way for service providers to build an emotional connection with potential customers and to strengthen the emotional connections of existing customers.