Iskanje po katalogu digitalne knjižnice

Opis: This paper deals with determining the accuracy of measuring systems for determining the characteristics of rotating electrical machines. Efficiency classes and experimental methods for determining efficiency, are given in a standard, which has to be strictly respected. For determining the efficiency of an electrical machine, it is necessary to have a modern and accurate measurement system with sensors of high accuracy classes, which enables the user to carry out precise measurements and consequently, to determine all the characteristics of the electrical machine. This paper will be focused on torque and speed measurements.
Ključne besede: efficiency, measuring system, electric machines, torque and rotational sensors, accuracy
Objavljeno v DKUM: 04.12.2023; Ogledov: 529; Prenosov: 30
Celotno besedilo (18,06 MB)
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Opis: An operating temperature of the photovoltaic (PV) module greatly affects performance and its lifetime. Therefore, it is essential to evaluate operating temperature of the photovoltaic module in different weather conditions and how it affects its performance. The primary objective of this paper is to present a dynamic thermo-electric model for determining the temperature and output power of the photovoltaic module. The presented model is validated with field measurement at the Institute of Energy Technology, Faculty of Energy Technology, University of Maribor, Slovenia. The presented model was compared with other models in different weather conditions, such as clear, cloudy and overcast. The evaluation was performed for the operating temperature and output power of the photovoltaic module using Root-Mean-Square-Error (RMSE) and Mean-Absolute-Error (MAE). The average RMSE and MAE values are 1.75C and 1.14C for the thermal part and 20.34 W and 10.97 W for the electrical part.
Ključne besede: dynamic modeling, thermo-electric model, accuracy, measuring device, temperature, output power, PV module
Objavljeno v DKUM: 13.11.2023; Ogledov: 380; Prenosov: 33
Celotno besedilo (9,51 MB)
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Opis: In the master’s thesis we researched corporate governance and the quality of corporate governance. Corporate governance and management of organizations stem from the need and the desire for the existence and development of an organization. It is necessary to establish certain kind of monitoring and controlling in organizations, which we define with the term “corporate governance”. Corporate governance is the system of regulating and controlling corporate conduct and of balancing interests of all shareholders and other stakeholders to which company has influence. The interests of directors and shareholders may be in contrast. The purpose of corporate governance is to find a way to satisfy the interest of both, the board of directors and the shareholders, and at the same time to create long-team and sustainable growth for the company. Corporate governance is extremely important for individual organizations and, consequently, for their business. Compering different organizations, their corporate governance is done in different ways. Corporate governance in developed countries and leading economies is certainly different than in smaller and less developed countries. In this case, arises a question what kind of corporate governance can be labelled as “good” or “first-class” corporate governance. In order to improve corporate governance practices, various legal regulations and other forms of binding and less binding rules, recommendations, codes and standards have been developed. Quality is extremely important for organizations, therefore several methods, methodologies and indexes for measuring the quality of corporate governance have been developed. The purpose of methods is to evaluate and compare the quality of corporate governance between individual companies and between different countries. The results can serve for developing measures to improve corporate governance practices. At the same time, findings can serve to modify and supplement existing legislation and recommendations. The corporate governance index, as a measure of the quality of corporate governance processes, can also be one of the important indicators of the company's potential in order to access to new sources of capital and to reduce the capital´s costs in comparison with other companies. The main purpose of the master's thesis is to study corporate governance and its impact on the business of Slovenian and German telecommunication companies. We make comparison between following companies: Telekom Slovenije, d.d., A1 Slovenija, d.d., Deutsche Telekom AG and Telefónica Deutschland Holding AG. The quality of corporate governance in selected companies was measured with the SEECGAN methodology and index. The methodology was designed to measure the quality of corporate governance. It ensures transparency and provides a structured overview of the main areas of corporate governance between different companies. In empirical part of master’s thesis, we found out that Telekom Slovenije, d.d. has "first-class" quality of corporate governance, A1 Slovenia, d.d. has a "good" quality of corporate governance, Deutsche Telekom AG has a "first-class" quality of corporate governance and Telefónica Deutschland Holding AG has a "good" quality of corporate governance. We found out that both countries have companies with “first-class” and “good” corporate governance. The quality of corporate governance is not related to the national origin or country of operation of the company. One of the main finding of the analysis is that there are no significant differences between the quality of corporate governance in specific areas of SEECGAN index in Slovenian and German companies.
Ključne besede: corporate governance, quality of corporate governance, telecommunication companies, public stock companies, SEECGAN index and methodology, measuring the quality of corporate governance
Objavljeno v DKUM: 24.10.2019; Ogledov: 1226; Prenosov: 114
Celotno besedilo (3,15 MB)

Opis: Background/purpose: The interest of measuring customer satisfaction is reflected in its ability to gain customer loyalty, enhance favourable word of mouth, lead to repeat purchases and improve a company’s market share and profitability. The issue of integrating the Kano model of customer satisfaction with other models and tools to support development or improvement of a product, or to determine market strategies, is relatively unexplored in the Slovenian sector. This research aims to construct the Kano model in order to enhance customer satisfaction in the case of home appliances. Design/Methodology/Approach: Data was collected using an online survey amongst randomly selected individuals from the service interventions for an end users database. Principal component factor analysis was first used to identify the underlying factors of home appliance characteristics. In the next phase we calculated the derived and stated importance of customer satisfaction, which was then used to construct the Kano model of customer satisfaction. We further analysed which factors are the strongest drivers, or predictors, of repeat purchase using multiple regression analysis. Results: In the study we identified the underlying home appliance factors. The results show that these factors are: sales environment, price, user features, design features and technical features. The results were then used to construct the Kano model where the analysis goes beyond the qualitative analysis by implementing two approaches, stated and derived importance approach. According to the Kano model, marketers should concentrate on delight characteristics such as: wider knowledge of the salesperson, professional skills of the salesperson, design of home appliance, brand of home appliance. What is more, factors called ‘user features’ are the strongest predictors of repeat purchase. Conclusion: This paper links the Kano model with measuring customer satisfaction and presents a contribution for marketing research theory. Therefore, the results could be used to support optimization of business decision-making, as well as for further scientific research.
Ključne besede: optimization, business decisions, Kano model, consumers, satisfaction, measuring satisfaction
Objavljeno v DKUM: 23.01.2018; Ogledov: 1560; Prenosov: 246
Celotno besedilo (842,90 KB)
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Opis: A manual measuring time tool in mass sporting competitions would not be imaginable nowadays, because many modern disciplines, such as IRONMAN, last a long-time and, therefore, demand additional reliability. Moreover, automatic timing-devices based on RFID technology, have become cheaper. However, these devices cannot operate as standalone because they need a computer measuring system that is capable of processing incoming events, encoding the results, assigning them to the correct competitor, sorting the results according to theachieved times, and then providing a printout of the results. This article presents the domain-specific language EasyTime, which enables the controlling of an agent by writing the events within a database. It focuses, in particular, on the implementation of EasyTime with a LISA tool that enables the automatic construction of compilers from language specifications, using Attribute Grammars.
Ključne besede: domain specific modelling language, compiler, code generator, measuring time
Objavljeno v DKUM: 06.07.2017; Ogledov: 1699; Prenosov: 378
Celotno besedilo (409,44 KB)
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