Search
Search Results
-
Corporate Performance Measurement in the E-Commerce
80-91Views:611Performance of the domestic online commerce showed a dynamic increase in recent years and, based on the expected forecasts, this trend will be realized in the future as well. In Hungary, the number of electronic commerce undertakings is estimated to be within a range of between 5 000 and 6 000 pieces and this number is steadily increasing. Today, the opportunities offered by the internet play an increasingly significant role in every segment of the economy. In the increasing market competition, it is no longer sufficient to serve the local population. Driver of the internet commerce is a marketing activity therefore the performance measurement is a priority. The excellent result and success essentially and principally depend on the performance, in addition to luck. Performance is understood as the measurable results or, in the broad sense, the successful efforts which are made to achieve the organizational objectives. The performance measurement is a measurement process of the efficiency and economy of an activity. Its aim is to support the decisions and actions related to the operation of the undertaking. The performance measurement is not only a decision support tool but also an element influencing every level of the decision-making system; it has an effect on the actions of stakeholders. Its danger and importance are simultaneously the fact that its improper operation (application of incorrect yardstick) can result in a functioning contrary to the corporate objectives. My aim is to survey the corporate performance measurement practice, to assess the connection between the financial and operational performance as well as to analyse the connection between the performance measurement practice and the performance achieved.
-
Study on Nonlinear Behavior of Variable Thickness Plates
72-80Views:293The analysis of variable-thickness plates is much more complicated than that of uniform-thickness plates because variable coefficients occur in the equations. In reality, this analysis is of great interest in various engineering disciplines, such as civil engineering, aerospace engineering, machine design, and so on. Although there is extensive literature on analyses of plates with constant thickness, a rather limited amount of technical literature is available on the solutions to problems dealing with plates with nonuniform thickness. The reason is that the analytical solutions meet insurmountable difficulties. Besides, the nonlinear analysis process also faces more difficulties than the linear analysis of structures. For these reasons, the nonlinear behavior of variable-thickness plates based on a finite element procedure is presented in this study. Although the topic is not special, it will help the engineer have a specific view of the nonlinear bending of the plate with variable thickness. This survey will be based on the change in geometrical parameters. Numerical solutions are then presented to verify the simplicity of this proposed procedure.
-
Experiences of Innovation Projects in the Light of the „European Paradox”
563-578Views:276Corporate innovation can be a major factor in economic development and long-term high-level corporate performance. The position of the EU in international innovation rankings has not improved since the 2000 2009 period; though there has been a more positive trend since 2010, meeting the Lisbon goals, the EU is still not at the forefront in terms of R&D&I. Behind this process is the rapid progress of some industrially developing nations in R&D&I, as well as the relatively slow institutional development of national innovation systems in Europe. The relative lag in Europe can be explained by the frequently referred to “European paradox”, which is still unclear for methodological reasons. Firstly we consider the international ranking in innovation, then discuss one of the explanations put forth to explain this rather weak performance. We present case study that represent Hungarian experiences with corporate innovation.
-
Effect of Heat Input on the Toughness Properties of S690QL Steel during Hardfacing
1-12Views:144In recent years, the use of high-strength steels in hardfacing process has become increasingly common. One typical industrial example is the case of hydraulic shears used in building demolition operations, where the components are exposed not only to significant abrasive wear but also to intense dynamic loading. The use of quenched and tempered high-strength steel grade S690QL has become particularly widespread in this field, primarily as the base material for the hardfacing applied to the most heavily loaded regions of demolition shears. However, quenched and tempered high-strength steels are highly sensitive to the effects of the welding thermal cycle, which typically cause detrimental changes in the microstructure and mechanical properties of the heat-affected zone. The thermal cycles occurring during hardfacing differ from those typical of fusion welding, and consequently, the structure and mechanical properties of the resulting heat-affected zone may also vary. In addition, the penetration depth of the hardface layer can differ, which may significantly alter the load-bearing cross-section of the high-strength steel and, thus, the in-service behavior of the component. In the experimental work, hardfaced samples were performed on S690QL base material using different levels of heat input, thereby producing varying penetration depths. The aim of the study was to determine the effect of penetration depth on the resistance of the hardfaced component to dynamic loading. The tests were carried out at both +20 °C and –40 °C. The results clearly demonstrated that samples with deeper penetration exhibited reduced toughness at both investigated temperatures.
-
Simulation of Hot Rolling by Cellular Automata
190-195Views:374Our research is focusing to one of the most complex and important production step of flat rolled products that is the simulation of hot rolling. During hot rolling two phenomena as work hardening and the process of regeneration of crystals has strong influence for physical properties of microstructure of aluminium alloys. It needs to be taken into account in case of rolling technology steps and development. When we talk about aluminium the dynamic softening in fact it is dynamic recovery that is followed by dynamic recrystallization. It goes in the same order of magnitude rate. But in steels the recovery has only a minor effect. Hot rolled and newly modified grain structure is influenced by these dynamic phenomena. Hot rolled grain structure goes through significant changes under further production steps like cold rolling and heat treatments. But aside from these intermediate production steps the microstructure that we get after hot rolling has significant effect for mechanical and grains structure of the final flat rolled product. Proper technology planning is essential that for cellular automata simulation method can ensure useable and good solution for the simulation of recrystallization.
-
Study on Mathematical Competence and Attitude of Engineering Students
43-55Views:354Efficiency of the learning process is in the focus of studies dealing with the Hungarian higher education, including engineering education. The efficiency can be evaluated if the required competences are declared and systematically controlled. In this paper the results of a graduate student survey is presented. Students taking part in the survey have got a bachelor's degree in engineering and are first semester students presently in different engineering master programs. Mathematical thinking ability and creativity, as important competences in studying mathematics were measured with the questionnaire, rather than formulas and complicated calculation methods. Students’ experience in studying and applying Mathematics were asked in the first part of the questionnaire.
-
Investigation of Zeta Potential of Water Based Nanomagnetite-Bentonite Dispersions
54-66Views:342The stability of different type nanomaterials play an important role among recent scientific and industrial
challenges, including the examination of the effect of polymers, surfactants and their mixture on surface and electric surface properties and aggregation extent of dispersed particles, which are of utmost importance. Bentonite and its composite with different nanomaterials are frequently used for instance in environmental protection for wastewater treatment, since due to their great specific surface area they have excellent sorption properties. There are several publications in the literature for the application of bentonite in drilling muds. By using them the fluid loss can be decreased during the drilling process, the filtration of the fluid can be increased, it also improves the rheological properties and the formation damage can also be mitigated. During research the investigation and the analysis of the zeta-potential of nanoparticles and their composites at different pH and salt content can be an interesting topic. During our experiments the electric surface properties of nanomagnetite synthetized in laboratory (NM), cation
exchanged bentonite from Mád (Be) and the composite particles of these particles were investigated. Hybrid particles of different compositions (9:1, 7:3, 1:1, 3:7, 1:9) were analyzed at different potassium chloride concentrations (0.1 – 0.0001 M). The surface adsorption on the surface, i.e. the change in the surface charge can be traced well by analyzing the obtained zeta-potential values. The behavior of such systems was observed in the full pH interval, thus, valuable data were obtained regarding the colloidal stability. As for the stability, different requirements may emerge in practice, there are application fields where the colloidally stable system is advantageous, on the other hand, in some cases, ceasing the stabile system is the goal. Our investigations are of high importance in terms of stability and its characterization. -
Practice of Organizational Development in a Domestic Company
117-126Views:1201In today's changing world, it is extremely important that organizations can keep up with market trends. The perspectives of continuous development are expanding and the commitment of decision-makers to development activities is growing steadily. The starting point for organizational development is always man. Organizational development always begins with deeper research and modeling. Fundamental guidelines are set out as a paradigm of development. The most important and at the same time the most difficult step is to introduce the results of the analysis. The most effective, but the most time-consuming and cost-effective solution is full organizational development. The management of the organization faces significant efforts to embark on a full organizational development process. The aim of our study is to propose different development opportunities for the company's management with the help of analysis by the organization and supported by measurable data, as well as the catalyst for the modifying efforts observed among employees.
-
Dependence of the Passive Force Fp From the Revolutions, back Engagement of Cutting Edge Ae, Working Engagement of the Cutting Edge Ap During Milling
72-79Views:350In this contribution is analysed the force component of final force (passive force) by peripheral milling operation. Therefore, the main parameters that had influence to independent variable were revolutions, back engagement of a cutting edge ae, working engagement of the cutting edge ap. The article deals with the issue of milling in material AlMgSi0.5 (aluminium alloy). Specifically evaluates the force component with respect to change of revolutions (4000/min., 5000/min., 6000/min.), working engagement of the cutting edge ap (1 mm, 2 mm, 3 mm) and back engagement of a cutting edge ae (5 mm, 10 mm, 15 mm). The Alfaflex process fluid with 7% concentration was supplied in an amount of about cca 10 l/min.
-
Role of Lean and Agile Supply Chain Models for Pellet Fuel Technologies
119-130Views:349Business organisations constantly strive to improve their processes, both internal and external. Within the supply chain of a product, different strategies can be applied. This paper aims to answer the basic questions like what is the core of lean and agile SCM strategies, what are the differences of the two models, and how can they be combined. This paper examines further, which of these SCM models and what elements of them can be applied for wood pellet supply chains, also examining the possibility of their combination. The result of these examinations is, that even though fuel pellets can be considered as simple commodity and not a very innovative product, diversity in input characteristics, optimization of fuel pellet technology process variables and changes in output market qualities and quantities need sometimes agile, flexible answer from pellet fuel SCM. The basically lean character of pellet fuel technologies and SCM can further enhanced by implementing agile SCM model elements, as is the increased integration of suppliers into the supply chain.
-
Challenges of the Quality- and Change Management in the Context of Upcoming Social-Industrial Changes (5.0) – Conclusion of a Survey
138-150Views:404The upcoming industrial-social revolution, which may be called the 5.0, is emphasizing the coordination of the value-creating work of technology (machine) and man. This approach wishes to move towards sustainability, which deserves a significant role in nowadays through the world empathizing the negative effects of the wolrd. During my research I was looking for the answer that how the extended industry 4.0 and its tone be in Hungary via supply chain of the automotive industry. During my research I was looking for the answer that how the extended industry 4.0 be in Hungary and its tune through supply chain of the automotive industry. I also have examined that which changes are justified regarding management systems in interest of efficiency and emphasizing the human capital by leaders interviewed. As a part of qualitative research in-depth expert interviews were interpreted with help of content analysis based on the methodology of grounded theory. The results demonstrate the need to review and change existing processes in order to ensure that the potential of human capital is not lost and that technological development, even more so, is at the service of human resources in order to achieve its efficiency and effectiveness. Among the possible tools we can find the re-structurizing changes of post tracking processes of the audits in management systems providing quality. Furthermore, the practical implementation of multifactorial statistical process control in the evaluation of processed data, which may be one of the essences of industrial (IoT) data.
-
Laboratory-scale gasification of brown coal and char from RDF pyrolysis
188-193Views:291The pyrolysis is a promising process for producing syngas from wastes. However, the by-product of the technology may contain large quantities of carbon, therefore it is suitable for further syngas production. In this paper we examined the steam gasification of brown coal from Felsőnyárád and char from RDF pyrolysis derived from an experimental pilot plant operating in Zalaegerszeg. We performed our experiments in a laboratory-scale fix-bed reactor at 900 °C. The aim of this work to examine the efficiency of syngas production from pyrolysis char, as well as to explore the similarities and differences of the thermal decomposition of the feedstock materials.
-
The Opportunity of Analysing Global Career
115-124Views:410The study aims to define global career and to present an applicable method. Internationalisation and globalisation indisputably have affect on companies actions. The value of human capital as a resource has got notably higher than before. To retain competitiveness, multinational companies have to focus their sight on employees with globally usable knowledge. In today’s globalized world international assignments are particularly frequent. It is a must to differentiate between working abroad willingly or sent abroad by the company. Achieved and applied knowledge from international assignments are essential ingredients of global career. However, the inappropriately planned career structure can cause damage for the company and for the cost effectiveness of the HR department. It is vital to appoint the most suitable employee for the assignment, to increase the company’s success rate and to maximize the individual’s performance as soon as possible. The effectiveness of the selection has influence on performing a successful assignment in the process of the career path.
-
Evaluation of a Trainee Program’s Selection and Induction
502-511Views:863The research based on the trainee program of a large Hungarian company. The company recommends the program to entrants or those who have 1-1,5 years of work experience. The main objective is the evaluation of the effectiveness of the program through some of the HR functions. This study contains the process of the selection and the evaluation of getting into the program. What makes the program special, is the appearance of the technical mentor. According to the hypothesis, the mentor’s assistance reduces the uncertainty when the trainee inducted into the organization. The occasions of the beginner education, the conversations and feedbacks during the induction adds more efficiency to the success of the program. The searched data in literature features HR functions and mentoring. To learn about the program, a case study was made beforehand, and then the questionnaire was edited for the trainees at the company. In the course of the research, an interview was done with the technical mentor. The interview was based on the questionnaire. In point of the results, recommendations were defined connected to the assumed shortages of the program, also to increase the efficiency of the selection and induction. In conclusion, the maintenance of the trainee program is equally beneficial for the trainees and for the company as well.
-
Theoretical Overview of Discrete Choice Experiment
62-73Views:354The purpose of this study is to present a preference evaluation method, the discrete choice experiment. The reader can gain information on the background, application areas (with particular emphasis on health economics), the process and about three models (multinomial logit, random parameter logit, nested logit). Based on the results of literature analysis it can be said that the method is very promising, but in many areas it still needs improvement.
-
Principles of Three-Dimensional Computer Design for Understanding Impossible Figures
167-173Views:319For a better understanding of the impossible figures, it is advisable to use modern technological means by which the design of the geometry of the models gives a complete understanding of how they are made. Computer-aided 3D design completely solves this problem. That is, on the one hand, the ultimate visual variant of impossible figures is created, on the other hand, there is the possibility for real manipulation, movement, rotation and other models of space. In this study, 3D models of impossible figures are fully constructed, which are applied in the educational process in order to develop logical thinking. The steps of creating 3D geometry using open source software Blender 3D are described in details.
-
Quality Questions of Clinch Join
122-127Views:214This article deals with the quality of the clinch joints. Due to the volume of the production there is a need for the inspection of the joints and the monitoring of the joining process. Different producers give solutions for the inspection and monitoring and these solutions will be introduce through 1-1 example their importance.
-
Visual Analysis and Geometric Modeling of Metal Foams
89-92Views:250The development of an efficient procedure for 3D modelling and finite element simulation of metal foams
is one of the greatest challenges to engineer researchers nowadays. Creating 3D CAD model is alone a demanding
engineering task due to its extremely complex geometry, and the proper finite element analysis process is still in the
center of the research. The aim of this project is to analyze the related literature and to adapt the results may be
considered. -
Modeling the Thermal Behavior of Permanent Magnet Synchronous Motors
466-477Views:300The aim of this study is to present a thermal analysis of a permanent magnet synchronous machine based on finite element method. The developed model can be used to predict temperature distribution inside the studied motor during the rated operation. Electromagnetic computation is carried out with the aid of two 2D finite-element (FE) simulations on the cross-section of the PM motor. To analyse the process of heat transfer in an electrical machine, empirical correlations are used to describe the convective heat transfer from the different surfaces of the PM motor. The heat transfer coefficient is determined using dimensionless numbers and Nusselt number. After the loss calculation, the temperatures of the machine are calculated by using 3D finite element method. The results obtained by the model are compared with experimental results from testing the prototype electric motor.
-
Szervezeti struktúra jellemzői spanyol labdarúgó kluboknál
1-11Views:599In Hungary the developement of sport sector needs to changes in structural scheme of sport organizations. The question is that, in the different sports areasthe association-based sports model, or the buisness-based sports model can operate effectively. Nowadays, in addition to professional successes in sporting activities, Hungarian sports entities and professional sports enterprises do consider options for the most effective operations possible, and gather good international practices in order to establish such business-based sports models in Hungary that are efficiently operable. The business side of sports is particularly apparent in professional football. On a global scale, this sport clearly demonstrates the process of structural transformation that is directed at the realization of the appropriate form of enterprise and structural setup. This article has been written to describe the Spanish model by example of organizational scheme of Real Madrid and Barcelona FC.
-
Local Annealing of Cold Rolled Aluminum Sheets by LASER Treatment
21-26Views:286LASER treatment widely used in material processing technologies. The annealing is not the typical application of the LASER treatment, but this is possible to apply in case of cold deformed metals. In the article a cold rolled EN AW 8006 aluminum sheet is annealed by LASER treatment. The microstructure of the annealed sheets is observed by optical microscopy. An existing cellular automata simulation of recrystallization process is modified to study the LASER annealing. The observed microstructure and the simulated results are compared to determine the further development of the developed automaton.
-
Application of Nanomaterials in Food Industry and Agriculture
116-126Views:357Nanomaterials have unique application features which can mainly be associated with their size properties. These materials have much higher surface than the normal particle size variant of the same materials. Due to these properties, nanomaterials are widely used in the industry. Food industry and the agrarian sector are using these materials increasingly. The main goal of nano size components and additives are the improvement of some parameters of the food manufacturing process, the elongation of the best before date of the food and the improvement of the texture, stability and the consistence of the food. Probably, nanomaterials will play an important role in the development of the food industry, moreover, it can be anticipated that nanotechnology will also appear there and will influence the whole food chain. It should be noted that food industry is using several nano size class materials which are not referred to as nanomaterials. Some examples are the micelles of some proteins, like milk protein, and fatty acids. Considering all these, the aim of our work was to present a thorough review and summary of the current applications.
-
Technical Issues and Their Effect on the Financial and Time Scheduling of the Building Under Roof and/or Floor Upbuilding
324-343Views:257Building under roof and/or floor upbuilding raises technical issues different as one raise in the case of green investments. Primarily, depending of system of building constructions of the existing building there is a possibility to build under roof, and/or floor upbuilding. In the paper we review those technical issues, what decide, that in the case of given building there is or not possibility to build under roof, and/or floor upbuilding. We examine in general, that in the case of building under roof, and/or floor upbuilding what building process should be considered, and what kind of time and financial scheduling is advisable to prescribe. We will present a case study, that the inadequate processing of technical issues may require time and financial rescheduling.
-
Quality Indexes of Warehouse Services
1-13Views:655There was a wide range and rapid development in the field of warehouse management in the recent decades as a result of strong and spectacular improvement of establishing and operating warehouses, in addition to increasingly complex logistic processes. In my research, I analysed the complex problems of determining the performance expectedfromoperatingthewarehousetechnologicalsystem. Thisdecisioninvolvestheselection of the essential performance indicators suitable for performance measurement and the determination of the expected performance level based on these indicators through the example of an examined enterprise. During my research, I concluded that the logistic performance measurement of warehouse processes is a very difficult process, because all enterprises have to define and use indexes which adapt to the enterprise profile well and reflect the performance to be measured. This decision is of key importance, since the warehouse system and its operation principles have to be adjusted to this expected performance.
-
Improving of Geometric Precision in the Manufacture of Circular Holes Using Technology WEDM
238-245Views:376WEDM technology is among the final technology. It is characterized by the high quality of the machined surface. Therefore, a small geometric deviation from the desired shape, position, orientation or run out may have a significant impact on the functionality of the finished component. Its range is largely influenced by the accuracy of the applied electroerosion device, the precision of the workpiece and tool setting, the machining method, but also the combination of each other and the adjustment of all process parameters. They result in the final quality of the machined surface not only in terms of roughness parameters but also in terms of geometric precision of the machined surface. The aim of the paper was to describe the possibilities of improving the geometrical accuracy of WEDM with thin brass electrodes. At the same time, it contributes to an existing database of knowledge that defines the influence of selected aspects on the geometrical accuracy of the machined area in the production of circular openings.
