University of Miskolc OJS
Not a member yet
2834 research outputs found
Sort by
Tehetségek kinevelése és tudományos pályára állítása Hantos Elemér Gazdálkodás- és Regionális Tudományi Doktori Iskola
Get PDFA Doktori Iskola története a nem intézményesített és akkreditált időszakot is figyelembe véve, több mint 30 éves múltra tekint vissza. A Gazdaságtudományi Kar 1992-ben indította el kísérleti doktori programját, majd a „Vállalkozáselmélet és gyakorlat” doktori programja 1994-ben nyerte el akkreditációját az Országos Akkreditációs Bizottság 1994/1/18 sz. (1994.05.24.) állásfoglalása alapján. A doktori program keretében első alkalommal 1996-ban szereztek abszolutóriumot a hallgatók, míg az első PhD fokozatot 1997-ben állították
Consequences of leniency programmes and whistleblowing measures for the sanctioning process in criminal proceedings
Get PDFWhistleblowing and leniency programmes are important instruments to detect and successfully solve crimes. Whereas whistleblowers are natural persons who report or disclose legal violations in which they are not necessarily involved, principal witnesses are involved in criminal activities and report their knowledge to the authorities. Legal systems must provide incentives for people to report their knowledge and make it available to the authorities. Whistleblowers must therefore be guaranteed adequate protection, and principal witnesses must benefit from disclosing their knowledge by having their penalties reduced or waived entirely.Whistleblowing and leniency programmes are important instruments to detect and successfully solve crimes. Whereas whistleblowers are natural persons who report or disclose legal violations in which they are not necessarily involved, principal witnesses are involved in criminal activities and report their knowledge to the authorities. Legal systems must provide incentives for people to report their knowledge and make it available to the authorities. Whistleblowers must therefore be guaranteed adequate protection, and principal witnesses must benefit from disclosing their knowledge by having their penalties reduced or waived entirely.Whistleblowing and leniency programmes are important instruments to detect and successfully solve crimes. Whereas whistleblowers are natural persons who report or disclose legal violations in which they are not necessarily involved, principal witnesses are involved in criminal activities and report their knowledge to the authorities. Legal systems must provide incentives for people to report their knowledge and make it available to the authorities. Whistleblowers must therefore be guaranteed adequate protection, and principal witnesses must benefit from disclosing their knowledge by having their penalties reduced or waived entirely
„Kik vagyunk mi”? Az adó megfizetésére kötelezett személy jogorvoslathoz való jogának problematikája
Get PDFIn the past period, the Constitutional Court of Hungary actively formed the right to an effective remedy of the person who liable to pay the tax with its decisions. However, they formulated so requirements whose implementation resulted practical and legal status problems. The goal of my paper is to identify and present the problematic of the answers of the Constitutional Court of Hungary regarding the right to an effective remedy and legal status of the person who liable to pay the tax. In doing so, I review the previous and currently effective regulatory frameworks of the right to remedy. I deal in detail with the jurisprudence established by the Supreme Court of Hungary (Kúria) before the decisions of the Constitutional Court of Hungary, and then I analyze its changes in the light of their decision. Finally, I will point out the serious collision between the constitutional requirement determined by the Constitutional Court and the effective legal framework. In connection with this, I also briefly refer to a possible solution.Az elmúlt időszakban az adó megfizetésére kötelezett személy jogorvoslati jogát aktívan alakította az Alkotmánybíróság a döntéseivel. Azonban azok olyan követelményeket fogalmaztak meg, amelyek gyakorlati megvalósulása aggályos és jogállási problémákat is eredményezett. A jelen tanulmány arra vállalkozik, hogy azonosítsa és bemutassa az Alkotmánybíróság által megállapított valós problémákra adott válaszok problematikáját az adójogi mögöttes felelős jogorvoslathoz való jogát és jogállását érintően. Ennek során áttekintem a jogorvoslati jog korábbi és jelenleg hatályos szabályozási kereteit. Részletesen foglalkozom a Legfelsőbb Bíróság, majd a Kúria által az alkotmánybírósági határozatok előtt kialakított joggyakorlattal, majd elemzem annak változását azok meghozatalának tükrében. Végül rámutatok Alkotmánybíróság által meghatározott alkotmányos követelmény és a hatályos szakjogi keretek súlyos kollíziójára. Ehhez kapcsolódóan röviden utalok megoldási lehetőségre is
CO2 sequestration experiments by producing geopolymer specimens from lignite fly ash: ONLINE FIRST (pre-proof)
No full textThe mineral-based sequestration of CO₂ offers a permanent and safe method to store CO₂ captured from flue gas. In this process, CO₂ reacts with calcium and/or magnesium-bearing materials to form stable, environmentally benign carbonate minerals. In a recent research project, CO₂ sequestration was performed on deposited fly ash from Visonta, Hungary, coupled with mechanical activation. The resultant carbonate phases were analyzed for their suitability as geopolymer-based construction materials. CO₂ sequestration and mechanical activation occurred in a Fritsch Pulverisette 5 planetary ball mill under wet conditions. The samples were dried post-sequestration, and 20x20x20 mm geopolymer specimens were prepared and tested for compressive strength after seven days. It was found that bassanite, the primary calcium source in fly ash, reacts with CO₂ only in the presence of NaOH. Additionally, low NaOH concentrations (0.5 M) during grinding positively impacted the compressive strength of the geopolymer, while higher concentrations reduced it. At 2 M NaOH, the specimen failed to consolidate fully, deforming plastically under pressure. The experiment yielded a maximum compressive strength of 16.1 MPa for the geopolymer using 0.5 M NaOH
Comparative analysis of multi-criteria decision-making techniques for groundwater potential mapping in highland of Eritrea
Get PDFThis study employs an approach that integrates geospatial techniques with the Analytical Hierarchy Process (AHP) and Fuzzy-AHP to identify groundwater potential zones in Debarwa. Seven environmental parameters significantly influencing groundwater potential were selected for analysis: geology, soil, lineament density, rainfall, land use/land cover, drainage density, and slope. A comparative study between the two methods was employed using Geographic Information System (GIS) and Remote Sensing (RS) tools. The thematic layers for each parameter were created and subsequently weighed through pairwise comparisons based on the AHP and Fuzzy-AHP methodology. Consistency tests were conducted to ensure the reliability of the assigned weights. The final weighted overlay map classified the groundwater potential into four categories: poor, good, very good, and excellent. The spatial distribution of the area coverage for the potential zone of AHP and Fuzzy-AHP fall under the good and very good zones. The results for good and very good use of AHP are 74.68% and 24.88%, respectively, with 80.12% and 19.87% for Fuzzy-AHP. While both methods produce comparable results, Fuzzy-AHP exhibits a slight advantage in refining classification accuracy by incorporating degrees of membership rather than rigid classifications. This makes Fuzzy-AHP potentially more effective when uncertainty and gradual transitions between groundwater potential zones are expected. The resulting outcome provides a valuable tool for decision-makers to prioritize regions for detailed groundwater exploration and management. The research recommends further validation using different approaches to evaluate the accuracy and robustness of the proposed groundwater potential zones.
 
Az RCP klíma forgatókönyveken alapuló nap- szélerőmű kapacitásfaktor horizontális és vertikális elemzése
Get PDFThe article examines the current and future development of Hungary's solar energy and wind energy production from an unusual perspective. It examines two consecutive thirty-year periods through changes in the capacity factor of solar and wind power plants under three climate scenarios. The analysis was carried out for eight NUTS2 regions of Hungary. Such studies contribute to increasing efficiency by combining resources and integrating areas with different production patterns, which has the potential to maximise production and minimise production uncertainty. You may want to do these with different vertical and horizontal resolutions.A cikk egy szokatlan szemszögből vizsgálja a magyar napenergia- és szélenergia-termelés jelenlegi és jövőbeli alakulását. A nap- és szélerőművek kapacitásfaktor változásán keresztül vizsgál meg két egymást követtő harmincéves időszakot, három klíma forgatókönyv mentén. Az elemzés Magyarország nyolc NUTS2-es besorolású régiójára készült el. Az ilyen vizsgálatok hozzájárulnak a hatékonyság növeléséhez a források kombinálásával és a különböző termelési mintákkal rendelkező területek integrálásával, ami lehetőséget nyújt a termelés maximalizálására és a termelés bizonytalanságának minimalizálására. Ezeket érdemes különböző vertikális és horizontális felbontás mellett elvégezni
Numerical modeling of pipe-soil interaction under surface loading
Get PDFBuried steel pipelines (BSPs) subjected to large surface-induced ground movements (e.g., fault displacements) exhibit complex behavior that is not yet fully understood. Such ground-induced deformations give significant risks to pipeline integrity, motivating detailed investigation into BSP response under extreme conditions. This study addresses the problem by numerically modeling pipe–soil interaction under a 1.0 m vertical fault displacement, illustrating the pipeline’s stress–strain response and highlighting the challenges of this complex engineering scenario. The purpose of this paper is to demonstrate a robust simulation approach that captures the intricate BSP behavior under large ground shifts, thereby advancing understanding and aiding in the safe design of buried pipelines. The analysis employs a Pasternak elastic foundation model coupled with a finite element method (FEM) in Abaqus, using special pipe–soil interaction (PSI) elements to simulate the soil support and pipeline coupling. The numerical results provide detailed stress and displacement distributions along the pipeline, confirming an elastic–plastic deformation pattern. Permanent deformations (plastic yielding) develop primarily in the vicinity of the fault, while pipeline regions farther than roughly 100 m remain in the elastic region.Buried steel pipelines (BSPs) subjected to large surface-induced ground movements (e.g., fault displacements) exhibit complex behavior that is not yet fully understood. Such ground-induced deformations give significant risks to pipeline integrity, motivating detailed investigation into BSP response under extreme conditions. This study addresses the problem by numerically modeling pipe–soil interaction under a 1.0 m vertical fault displacement, illustrating the pipeline’s stress–strain response and highlighting the challenges of this complex engineering scenario. The purpose of this paper is to demonstrate a robust simulation approach that captures the intricate BSP behavior under large ground shifts, thereby advancing understanding and aiding in the safe design of buried pipelines. The analysis employs a Pasternak elastic foundation model coupled with a finite element method (FEM) in Abaqus, using special pipe–soil interaction (PSI) elements to simulate the soil support and pipeline coupling. The numerical results provide detailed stress and displacement distributions along the pipeline, confirming an elastic–plastic deformation pattern. Permanent deformations (plastic yielding) develop primarily in the vicinity of the fault, while pipeline regions farther than roughly 100 m remain in the elastic region
Invisible data, visible experiences: Artificial intelligence in the service of data-driven city marketing
Get PDFRecent advancements in artificial intelligence have begun to reshape the practices of contemporary city marketing by enabling the development of more targeted, efficient and personalised communication and development strategies. By analysing real-time data gathered from digital interactions and user feedback, AI technologies support the creation of segment-specific content and the improvement of the user experience, while fostering a stronger sense of belonging to a community among various stakeholders, including residents, tourists, businesses and students.
This article provides a comprehensive overview of the role regarding data-driven decision making in city marketing. European best practises – such as Madrid’s VisitMadridGPT system and Helsinki’s MyHelsinki platform – show that AI contributes not only to communication, but also to strategic and operational dimensions of urban development. These examples emphasise the ability of AI to improve both the competitiveness and long-term sustainability of cities. Ethical considerations, particularly in relation to data privacy, are also addressed as integral components of responsible AI adoption. The study aims to summarise current trends, practical implementations and critical challenges in the application of AI regarding city marketing and ultimately contribute to the development of more conscious, data-driven urban strategies.Recent advancements in artificial intelligence have begun to reshape the practices of contemporary city marketing by enabling the development of more targeted, efficient and personalised communication and development strategies. By analysing real-time data gathered from digital interactions and user feedback, AI technologies support the creation of segment-specific content and the improvement of the user experience, while fostering a stronger sense of belonging to a community among various stakeholders, including residents, tourists, businesses and students.
This article provides a comprehensive overview of the role regarding data-driven decision making in city marketing. European best practises – such as Madrid’s VisitMadridGPT system and Helsinki’s MyHelsinki platform – show that AI contributes not only to communication, but also to strategic and operational dimensions of urban development. These examples emphasise the ability of AI to improve both the competitiveness and long-term sustainability of cities. Ethical considerations, particularly in relation to data privacy, are also addressed as integral components of responsible AI adoption. The study aims to summarise current trends, practical implementations and critical challenges in the application of AI regarding city marketing and ultimately contribute to the development of more conscious, data-driven urban strategies
A demográfiai változások hatása a nyugdíjrendszer pénzügyeire
Get PDFIn the present study, I examine the effects of demographic change, especially aging, on the pension system and its finances. Following the theoretical basis, I briefly summarize the demographic changes of the last century and then analyze the relationship between demography and the pension system. In addition to the basic assumptions of pension systems, I will address the connections between the state pay-as-you-go pension system and an aging society. Finally, among the macroeconomic effects of demographic change, I present the budgetary effects.Jelen tanulmányomban a demográfiai változások, különösen az öregedés nyugdíjrendszerre és annak pénzügyeire gyakorolt hatásait vizsgálom. Az elméleti alapvetést követően az elmúlt évszázad demográfiai változásait röviden összegzem, majd a demográfia és a nyugdíjrendszer összefüggéseit elemzem. A nyugdíjrendszerek alapfelvetései mellett az állami felosztó-kirovó nyugdíjrendszer és az elöregedő társadalom összefüggéseire térek ki. Végül a demográfiai változások makrogazdasági hatásai között a költségvetési hatásokat mutatom be
