Keresés
Keresési eredmények
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An Analytical Solution for Static Problems of Cantilever Curved Beams with Variable Cross Sections
226-233Megtekintések száma:145This paper gives an analytical method to obtain the deformation of a cantilever curved beam. The curved beam considered has circular centre line and the thickness of the cross section in radial direction depends on the circumferential coordinate. The kinematics of the Euler-Bernoulli beam model is used to formulate of governing equations. The curved homogeneous and isotropic elastic beam is fixed at the one of the end cross section and on the other end cross section is subjected to concentrated forces and a couple. A numerical example illustrates the applications of the derived formulae.
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A Heinrich Spatial Visualization Test Implementálása Virtuális Környezetben
1-8Megtekintések száma:218Egy virtuális környezet fejlesztése valósult meg PC-re és Androidra. Az előbbit asztali kijelzővel, az utóbbit a Gear VR készülékkel lehet használni. A környezet használatával az emberek térbeli készségeinek mérése, valamint fejlesztése a célunk, hiszen az utóbbi megvalósítható egyszerű geometriai feladatok megoldásával. Eredetileg ez a virtuális környezet csak három térbeli készséget fejlesztő tesztből állt, nevezetesen a Mental Rotation Testből, a Mental Cutting Testből és a Purdue Spatial Visualization Testből. A szerzők már végeztek régebben méréseket ezekkel a tesztekkel, de most már a Heinrich Spatial Visualization Test is bekerült a virtuális környezetbe. Ebben a cikkben bemutatjuk ezen teszttípus implementálását és jövőbeli mérési tervünket.
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Generative Design of Articulated Rod of Radial Engine
36-47Megtekintések száma:482The constant need for improvement drives humans to look for the best possible option in every field. Computer Aided Design (CAD) is no exception, to follow the best method of designing a product and finalizing it, researchers came up with an idea to generate multiple designs using fixed input values and finalizing the most appropriate one. The objective is achieved using an iterative design process based on algorithms by a specific software. Generative design introduces a new experience based on the Integration of machine dynamics in the manufacturing of objects and about experience. In this work generative design method was investigated on an articulated rod, one of the most important components of the rotary engine, to effectively improve the overall working performance of the engine and enhance its performance by decreasing its mass. Since fuel consumption by the machine can be greatly reduced by lowering the mass, so the goal is to minimize the weight of the rod while mechanical characteristics have to be within the acceptable values. Also, finite element analysis (FEA) was investigated on the part as to ensure the reliability of the rod before and after optimization.
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The Impact of Sales Promotion, User Interface and User Experience Design on Shopee App Users' Repurchase Intentions
90-104Megtekintések száma:1365By 2022, Gen Z and millennial consumers dominated Shopee usage in Indonesia. Similar e-commerce platforms are forced to constantly innovate to remain competitive in the market due to increasing competition. Therefore, the primary focus of e-commerce platform development should be on the user interface, user experience design, and promotions that are appealing and easy to access so that potential customers are inclined to repurchase. This research aims to determine the influence of UI design, UX design, and promotions on the repurchase intention of users of the Shopee application. The sampling method used was systematic sampling. Ninety-six respondents are included in the sample. This study uses descriptive analysis, classical assumption tests, multiple linear regression, and hypothesis testing for data analysis. SPSS Statistics 28.0 was used for data processing. The study found that user interface design, user experience design, and sales promotions statistically impact the repurchase intention of users of the Shopee application. The results demonstrate the effectiveness of repurchase intent in e-commerce.
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Roguelike Games: The Way We Play
80-92Megtekintések száma:1625The spread of the gameable personal computers and game consoles resulted in the diversification of the video game genre, and from the 7th generation of the gaming consoles, the experience support of the games became largely enhanced. These games are now consumable owing to their resolution, the content, the plots are so fascinating so that they tie the gamer to the seat. Gamers seek experiences in the games. Still, such a special genre called roguelike was established, which is characterized by the constant termination of this world of experience in such a way that the gamer, as a results of the high level of difficulty, is obliged to start the game again and again. These new genre games are now leading titles of the new generation consoles, such as Demon’s Souls or the Returnal, gaining huge role in the introduction and sale of the new gaming console PS5. This study aims to reveal specifications of this genre, moreover, aims to describe through empirical research how gamers relate to it, and whether features of these games contribute to the devotion to them or lead to the disappointment from this world of experience.
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Egészségügyi menedzsment képzések-formák és tartalmak
Megtekintések száma:270Az egy tudományterületen belüli szakterületi önállósodás a XXI. századra plurális jelleget öltött. A menedzsment diszciplína XX. század eleji megjelenése az ipar területére korlátozódott, és a hatékonyság maximalizálásával volt összefüggésben. Mára a menedzsment az egészségügy területén is önállósodott, a képzések terén bizonyosan, melyet nemzetközi szinten számtalan képzési forma kínálata erősít meg. Itthon a képzési formák felsőoktatási szinten egyelőre bináris jelleget öltenek, egyetlen BA és egyetlen MA képzési lehetőséget kínálva. Tanulmányunk célja feltárni a nemzetközi képzések sokszínűségét, bemutatva azok fontosabb sajátosságait, összevetve a hazai viszonyokkal, mely összességében új vagy újszerű képzési formák megjelenésének szükségességére világíthat rá.
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Sportcivilek-ellenőrzés, beszámolási sajátosságok
289-299Megtekintések száma:240Az ellenőrzés, mint vezetési funkció nem mondható egy, a vezetési szakirodalmakban különösen preferált vizsgálati témának, hasonlóan igaz ez a civil szervezetek témakörére is. Magyarországon a rendszerváltást követően intenzívvé váló nonprofit, azon belül pedig a civil szféra lényegesen meghatározóvá vált. 2017-ben a 61 151 nonprofit szervezet 15,2%-a sport cél szerinti tevékenységű, az 53 613 klasszikus civil szervezet (egyesületek és alapítványok) esetében ez az arány magasabb, 16,2%. Ezeknek a szervezeteknek különös sajátossága a támogatásokkal kapcsolatos különös összefüggés, mely a KSH aktuális adatai szerint mára támogatásfüggőséggé vált (a bevételek közel 2/3-a támogatás). Ezért válhat érzékennyé a téma, amennyiben egy szervezet ugyanis nem tud elszámolni támogatásokkal, vagy nem tud megfelelni a törvényi elvárásoknak, úgy az összefüggésben lehet a vezető ellenőrzői funkciójával, és rávilágít a civil szervezetek és az ellenőrzés összefüggésére. Tanulmányunkban az ellenőrzés mint vezetési funkción keresztül kívánjuk röviden áttekinteni a téma sajátosságait, ahol eredményeink szerint ezek a szervezetek egy jelentős része nem is igazán tud az elvárásoknak megfelelően teljesíteni.
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Vibration Measurement of a Screening Machine
116-123Megtekintések száma:171In this paper we use linear vibration approach to make a model of a horizontal vibration screen, which can be applied at gravel pit in order to perform separation operation of the wet gravel particles. The model can produce the natural frequencies of the system, which are useful in the adjustment of the angular velocity of the vibration exciter. A laser triangulation unit is well applicable to measure peak-to-peak amplitude of the working vibration screen. Comparison has been performed between the results of the simulation and the measurements.
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Stratégiát megalapozó elemzések gyakorlati alkalmazása
59-72Megtekintések száma:484A környezet növekvő változékonysága egyre nagyobb kihívást jelent a vállalatok, vállalkozások számára. A gazdasági események bekövetkezésének sebessége változó, a bizonytalanság miatti kockázat nő, ami az üzleti vállalkozásoktól új szemléletű tervezési gyakorlatot vár el. Stratégiájuk kialakítása, tervezése során mind a külső és a belső környezet tényezőinek feltárása, mind a versenytársaik elemzése jól megválasztott módszerek alapján történhet. Ezen módszerek áttekintését, a tervezési és oktatási gyakorlatban történő alkalmazását tekintjük cikkünk céljának, melynek során a hazai és a nemzetközi gyakorlatban is alkalmazott stratégiát megalapozó módszereket mutatjuk be, kiemelve a külső és a belső környezetet elemző módszereket. A külső környezet elemzése során a hagyományos PEST analízisre és a Porter–féle öttényezős modellre épülő külső faktor értékelő mátrix felépítését és alkalmazhatóságát szemléltetjük. A belső elemzési módszerek esetén a módszerválasztás szempontrendszerét, valamint az alkalmazható módszerek esetén az erőforrás alapú megközelítésre, kulcsfontosságú tényezők elemzésére, illetve a Porteri értéklánc elemzésre épülő belső faktor értékelő mátrix jelentőségére térünk ki. A stratégiát megalapozó elemzések harmadik pillérét a versenytársak mátrix alapú értékelése jelenti. A módszerek alkalmazhatósága függ a vállalkozás formájától, működési területétől és tevékenységének jellegétől, amit az új gazdasági szférák (pl.: sharing) és az átalakult erőviszonyok megjelenése is bonyolít.
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Introducing a Task Management Tool into the Operation of a Management Consulting Firm
122-135Megtekintések száma:337Lean and agile methods are now widely used in various fields. Seeing their success, management consultancy firms also want to take advantage of using them. In this case study, the company selects the appropriate task management tool for their operation, the kanban board, and implements it. The implementation process is supported by quantitative analysis. In order to track the introduction progress of the kanban board, a key performance index is defined: the board activity, which is the number of operations performed on the board in a given time period. Based on the evaluation of over 26 weeks’ data, board activity proved to be an appropriate indicator of the kanban board’s reception, operation, and stability. The individual indicators examined, however, were not found to be suitable for performance appraisal.
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Design an Opening Force Measuring Device for Balancing Clips
220-225Megtekintések száma:129This paper deals with the development of a force measuring device to determine the opening force of different types of balancing clips. These elements can be used in the impellers of ventilators to rebalance the rotor. The measuring device contains a commercially available beam type load cell. The data processing is performed by Arduino Nano development platform with a 24-bit sigma delta A/D converter. The device is well applicable to determine the opening force of the clips in different opening distances.
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A 9. konzolgenerációk válsága-fókuszban a Playstation 5 és az Xbox Series X
1-10Megtekintések száma:423A múlt század végére piacra kerültek a kimondottan játékra optimalizált, azaz játékosok igényeit kielégítő sajátos számítógépek, az ún. játékkonzolok. A múlt év végére, hosszas várakozást követően jelentek meg a piacon a 9.generációs játékkonzolok új típusai, a Sony és a Microsoft kiadásában. A szakmában ismertek szerint a konzolok megjelenésének ovációját egy azóta is be nem töltött űr váltotta fel, ugyanis immár több hónapos eseményeket követően jelenthető ki: a Playstation 5 és a Microsoft Series X játékcélú használata komoly nehézségekkel szembesült. A tanulmány, melynek módszertani alapját elsősorban esettanulmány, illetve meglévő adatok másodelemzése képezi, igyekszik rávilágítani arra, hogy mi vezethetett erre a helyzetre, mennyire átmeneti vagy tartós jelenségről van szó, illetve vajon hogyan is reagál az érintett piac és játékra áhítozó társadalom erre a helyzetre. Az eredmények szerint sajnos nem csupán átmeneti jelenségről van szó, összetett problémák hatására piaci anomáliák alakultak ki, mely alapvetően átformálja a konzolpiaccal kapcsolatos viszonyunkat.
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Pure Bending of Homogenous Isotropic Elastic Curved Beam
67-75Megtekintések száma:66In this paper a detailed analysis is given for the pure bending problem of curved beams. The material of the curved beam is homogenous isotropic linearly elastic. The mantle of the curved beam is stress free and there is no body force on the curved beam. The plane of the curvature of the beam is the plane of symmetry for the whole beam. Paper gives the expressions of circumferential and radial normal stresses. A strength of material approach is used to derive the governing equations. A numerical example illustrates the application of the presented solutions.
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Latest Trends and New Tools Being Used in Strategic Management
73-85Megtekintések száma:763In today’s rapidly changing world, there is an increased need for excellent strategic planning. A firm’s survival may indeed hinge on the firm’s planning process being exemplary. Various aspects of the strategic planning process are under review today as organizations wrestle to compete more effectively in an ever-changing world. This paper reveals and describes five new trends or tools being utilized today by firms to more effectively engage in strategic planning. Specifically, the new trends and tools to be discussed in this paper are as follows: increased need to follow a strategic planning model; increased need to develop quality vision and mission statements; a new improved method for incorporating SWOT analysis into practice. Utilizing two matrices one internal and one external to provide a less biased way to access the current strategy fit with conditions facing the firm. Explain the use of a decision matrix commonly called the QSPM (Quantitative Strategic Planning Matrix) for assessing the relative attractiveness of various strategies being considered for implementation. The purpose of this paper is to familiarize readers with basic new tools and techniques being used by organizations to effectively develop an improved strategic plan for the firm.
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New Method for Dynamic Tribological Test of Engineering Polymers
25-29Megtekintések száma:134In this article, tribological tests of Polyamide 6 (PA 6), Ultra High Molecular Weight Polyethylene (UHMW PE) and Polyoxymethylene copolymer (POM C) by a new testing method is introduced. The tribometer used in the test is capable for pin-on-disc measuring within all possible layout known in tribology practice, otherwise can be modified into special model of fatigue sliding test. The pin was a specimen made from examined materials, always in contact with a rotating metal disc under a normal load, which is usually static. However, since vibration exists in every practical scene as an important phenomenon, for instance in turning process, we added vibration load into the test. The supplement load is generated by a special-designed vibrating machine. Then properties of examined materials can be studied more profoundly under vibration load. As a result, different value of friction coefficient in static and vibration load have been discovered and taken into comparison.
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Prediction of FLD using Abaqus and Gurson Model for Simple Flat Spacemen
32-44Megtekintések száma:104In the past century, in many industries, such as, metal forming industry, it has been important to predict ductile damage and fracture of metals under complex loadings. Regarding damage mechanics, one of the most classical models is the GTN, which was originated from Gurson and later enhanced by Tvergaard and Needleman. The inprovement was achieved by introducing an equivalent void volume fraction f and two more parameters called q1 and q2 into the yield function of Gurson’s model.
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The CAD Modelling Possibilities of Gear Pairs by Two Ways in the Mechanical Engineering Practice
205-219Megtekintések száma:151The GearTeq 2021 software is a complex gear designer software which is capable to design different types of gears based on the initial geometric parameters by the user. Naturally, the users’ appropriate knowledge for the gear theorem and the manufacturing technology is indispensable for the design. The possibilities of the software are shown in this publication. The designed gear pairs are usable for different engineering fields (robots, working machines, vehicles, etc.).
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Development of a Low-cost Pressure Sensor
33-38Megtekintések száma:236In this paper development of a pressure sensor has been discussed. The main benefit of this sensor is relatively cheap compared to commercially available ones. The unit contains a beam type load cell and a pneumatic cylinder. The load cell has 4 strain gauges in Wheatstone bridge configuration in order to convert the change of resistance into measurable voltage. The system is well applicable in numerous circumstances, where digital pressure signal is necessary for control or data acquisition.
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Requirements for Multicultural Competencies Defined by a Focus Group
44-56Megtekintések száma:217Globalization, the spread of multinational companies and the enormous development of information technology can lead to a new trend in employers’ requirements. However, being employed by an international company is a real possibility for any employee in any part of the world. Even if they do not have to work abroad, employees may have to function in a multinational environment in their home countries. A favourable combination of intercultural competencies is a key factor in the selection and development of employees. A possible way of measuring these competencies can be the Multicultural Personality Questionnaire (MPQ). First of all,on the employers’ part, it is important to clarify the exact requirements and competencies (dimensions) to be able to draw up an ‘ideal profile’. We prepared two versions of the MPQ (91-item; 5-dimensional) and used them to test employers’ requirements in the selection process regarding the dimensions of cultural empathy, open-mindedness, social initiative, emotional stability and flexibility. This study describes the results of a focus group interview, which took place in 2017, revealing the importance of multicultural competencies from the employers’ point of view and examining the conditions of the adaptability of the two questionnaires. We used the focus group method to find out in what conditions the questionnaires canbe used in a selection process. What possibilities and limits are therefor using the direct five-dimensional questionnaire? What aspects do we need to take into consideration in expressing and interpreting the requirements in the results of the test?
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Applying New Innovative Market Research Methods in the Innovation Process of New Products
56-69Megtekintések száma:243The innovation environment has changed a lot in the recent years, companies and their enterprises concentrating on product- and process innovation have undergone a lot of changes. According to GUPTA et al. (1986) product innovation is a multidisciplinary process. Although, all functional interfaces are important in the product development process, the research and development – marketing interface is one of the most difficult one. In the last two decades the incredibly fast penetration of the internet has more and more effects on the consumer attitudes. It encourages market researchers to apply such methods by which they could get as close as to the consumers to know their attitudes without taking them out of their natural habitat. In this study our aim is to concentrate on the first phase of the product innovation, which is the exploration of insights and attitudes. In this phase we can use the classical, conventional market research techniques if we want to get primary data, such as focus group interviews, questionnaires, in-depth interviews, but there are new methods as well. One of such novel methods is netnography. The biggest advantage of this research method is that the researcher can observe the consumer groups’ state of mind and decision-making mechanisms through publicly available communication sources in their natural environment. In this study it will be analysed how the directions of netnographic researches have changed by the dynamic changes of the internet. Besides, online participants’ attitudes towards healthconscious nutrition are analysed in practice. As a result of this study, special groups could be identified, which can provide a new perspective for the companies operating in this field beside the classical segmentation techniques. These groups can be the ones which draw up latent market requirements, and thus, helping the companies’ innovation processes.
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Some Aspects to the Rehabilitation of the Vernacular Adobe Architecture
1-15Megtekintések száma:216In this paper, we are dealing with the heat-technical modeling, life cycle assessment and the conservation of the vernacular adobe wall house. One of our investigations is directed to the seasonal equalizing property of this wall structure. The reason of this choice of this topic can be found in the fact, that in the old Hungarian folk house construction, the abode wall was popular and a significant fraction of the people living in the countryside are still inhabit these old houses. The Hungarian winter is cold and followed normally by sizzling hot summer. The adobe wall construction is perfect for the local climatic conditions. Due to the on-going global warming up, the ecological importance of these wall constructions is becoming more prominent. Most of these adobe wall constructed houses are already under preservation order, due to their ecological significance and also because they are part of our culture heritage. Their conservation and maintenance problems are briefly described in the paper, too.
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The Effect of Sizes of the Cast Polyamide 6 Rods upon Tensile-Impact Strength
21-24Megtekintések száma:144We have studied the tensile-impact strength of the magnesium catalysed cast polyamide 6 (PA6) rods according to the EN ISO 8256:2004 standard. The purpose of our investigation was to follow: the mechanical properties of rods are mapped beside same casting technological process in case of different diameters. We have compared the received results with each other than have sought disparities. We examined cylindrical product (rod) in seven dimensional steps in diameter ranging from 40 mm to 300 mm. We have determined that the semi-finished products can be divided into two groups typically in case of their tensile-impact strengths in this size range. The tensile-impact strength is higher in case of the rods with a diameter of less than 100 mm and it is smaller in the larger dimension range. Therefore, the smallest tensile-impact strength can be established in case of the natural semifinished PA6 rods that each rod accomplishes independently of size. However, a range can be determined, which the tensile-impact strength values of product are separated according to the manufacturing size
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Municipal Geothermal Systems: Evaluation of Three Hungarian Cases
81-93Megtekintések száma:120Geothermal energy holds great potential for a sustainable future, as it is a clean and weather-independent form of energy. In addition to energy production, it can also serve the population of a region through direct use. In this paper, three municipal geothermal systems (Szarvas, Nagyszénás, Békéscsaba) in the same Hungarian region which have been recently installed or expanded are presented and analysed. Here, the direct usage of geothermal energy for heating purposes is a very important issue. The three systems show several differences and to some extent face different challenges in the various phases of the projects. Particular attention has been paid to engineering solutions to the problems that arise. The challenges, such as technical difficulties during installation, maintenance difficulties, or problems arising during operation are introduced. The strengths, weaknesses, opportunities, and threats of similar geothermal systems were summarized, based on the relevant literature. These points were evaluated by their appearance and characteristics in the examined systems. This study aims to provide insights, based on recently gained experiences, into geothermal projects, thus providing feedback and practical information for researchers and practitioners.
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Maintenance of Electric and Hybrid Vehicles
37-46Megtekintések száma:505An electric car is a vehicle powered by one or more electric engines, utilizing energy stored within batteries that are rechargeable. The first register of a usable electrical vehicle dates from 1880s. A hybrid vehicle incorporates two or more different power types, including, e.g., gasoline engines and electric motor. The goal in this work is to present the overall overview of the structure of the electric, hybrid and electric-hybrid vehicles, advantages and disadvantages of these types, the main points to focus when maintaining these and the challenges involved in its production and maintenance.
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Strategies and Effects of LEDS (Low Emission Development Strategy) in Fortaleza, Brazil
110-121Megtekintések száma:179When it comes to climate change, the built environment, together with transport, and waste and water management play a significant role as Greenhouse Gases (GHG) emitting sectors, reflecting the strong need to address such issues by local governments. A notable action that has been taken in this regard is the Urban Low Emission Development Strategies (Urban LEDS), which consists of a project implemented by the UN-Habitat and the International Council for Local Environmental Initiatives (ICLEI) that selected eight model cities and twenty-one satellite cities around the world and aims to support integrated and ambitious climate action, encouraging low-carbon efforts in emerging economies through the collaboration among them. In addition, eight European cities also participated in the project in its first phase, contributing with their expertise and experience with climate change mitigation. Since 2012, the city of Fortaleza in Brazil is a model city of the Urban LEDS project and it has sustainably integrated and developed many projects, making it a more resilient city, stimulating its economic growth and improving its quality of life. This paper aims to present the milestones that Fortaleza has already met within Urban LEDS and its main priorities in the next years, identifying best practices in three European cities (Copenhagen, Zagreb and Hannover) that could also be implemented in its geographical, social and cultural context, as well as indicate lessons that other cities can learn from Fortaleza.
