János Nagy

Mr. János Nagy

orcid

Research Focus & Metrics

Academic Career Length

33Years (1994-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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20 February 2019 in Sustainability
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MPMiklós Pakurár
Miklós Pakurár
HHHossam Haddad
Hossam Haddad
JNJános Nagy
János Nagy
József PoppJózsef Popp
József Popp
Judit OláhJudit Oláh
Judit Oláh
Banks must meet the needs of their customers in order to achieve sustainable development. The aim of this paper is to examine service quality dimensions, by using the modified SERVQUAL model, which can be used to measure customer satisfaction, and the effect of these dimensions (tangibles, responsiveness, empathy, assurance, reliability, access, financial aspect, and employee competences) on customer satisfaction in Jordanian banks. Data were gathered from 825 customers in the Jordanian banking sector. The sample data were statistically analyzed through exploratory factor analysis by the SPSS program to determine service quality perception and customer satisfaction. The results illustrate that the modified SERVQUAL Model extracted four subscales in the new model instead of eight in the initial model. The first subscale contains four dimensions—assurance, reliability, access and employee competences. The second subscale consists of two dimensions—responsiveness and empathy. The third and fourth subscales—financial aspect and tangibility—are separate factors. Further studies should consider the dimensions of access, financial aspect, and employee competences as essential parts of service quality dimensions with the other subscales, so as to improve wider customer satisfaction in the banking sector. In the authors’ opinion, the modified SERVQUAL model is useful for addressing customer satisfaction in the banking sector.

27 February 2019 in Sustainability
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MPMiklós Pakurár
Miklós Pakurár
HHHossam Haddad
Hossam Haddad
JNJános Nagy
János Nagy
József PoppJózsef Popp
József Popp
Judit OláhJudit Oláh
Judit Oláh
The aim of this paper is to use a recently developed framework of supply chain integration (SCI) to examine the influence of a set of relationships between SCI and internal control on financial performance in the Jordanian banking sector. SCI consists of external integration and internal integration. External integration includes customer integration and supplier integration. This study utilizes survey data from 249 employees in the Jordanian banking sector and tests the research framework and hypotheses using exploratory factor analysis. The impact of supply chain internal and external integration and internal control significantly affected financial performance. The impact of the examined factors on financial performance is as follows, in decreasing order: internal integration, supplier integration, customer integration, and internal control. This study’s contribution to supply chain management is in its integration of SCI and internal control variables to propose a practical framework for the banks to use, and its development of a measurement tool for managers to determine the effects of internal and external integration and internal control on financial performance.

1 December 2013 in Acta Silvatica et Lignaria Hungarica
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CRCsaba Rácz
Csaba Rácz
JNJános Nagy
János Nagy
ADAttila Csaba Dobos
Attila Csaba Dobos
The knowledge of the evapotranspiration of natural ecosystems and plant populations is of fundamental importance in several branches of science, research and practical uses. Nevertheless, the harmonisation of the large number of methods and user needs often causes problems. The objective of the analyses was to explore the output range and sensitivity of models of different physical approaches under local conditions. We performed descriptive statistical and sensitivity analysis of 10 commonly used estimation models - one of them with two variants. Correlation between modelled and measured evapotranspiration data series was assessed. The magnitude of the model outputs, their variability and responses to the changes of selected atmospheric parameters were evaluated. Priestley-Taylor, Penman-Monteith-FAO-56, Shuttleworth-Wallace (parameterized with alternative radiation balance), Szász and Makkink proved to be the most sensitive methods. As regards the systematic error, Makkink and Shuttleworth-Wallace showed the best agreement with pan evaporation, while Shuttleworth-Wallace, Blaney-Criddle and Makkink models were found to be the closest to the Penman-Monteith-FAO-56 method as a reference value.

1 June 2014 in Journal of Cancer Research and Clinical Oncology
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GMGéza Mezey
Géza Mezey
ATAndrea Treszl
Andrea Treszl
ASAndrew V. Schally
Andrew V. Schally
NBNormann L. Block
Normann L. Block
LVLaura Vízkeleti
Laura Vízkeleti
LBLaszlo Bognar
Laszlo Bognar

JNJános Nagy
János Nagy
SSSándor Sipka
Sándor Sipka
JKJudit Kocsis
Judit Kocsis
ZHZsolt Horváth
Zsolt Horváth
We compared the age-adjusted death rates (AADR) for cardiovascular diseases (CVD) among 206,159 inhabitants analyzed between 2000 and 2010 in four wine territories of Hungary: Tokaj (white wines), Eger (mostly red wines), Balaton (mostly white wines), Szekszárd-Villány (mostly red wines) and Hódmezővásárhely (HMV) (not a wine region). The mortality rates were also assessed from the aspects of total hardness of drinking water and index of socio-economic deprivation (ID). We found the highest cardiovascular mortality in the Tokaj region and HMV. On the other hand, lower numbers of CVD were observed in Szekszárd-Villány, Balaton and Eger. These findings on cardiovascular mortality correlated negatively and significantly with the values of total hardness of drinking waters, which were low in Tokaj and HMV. They were higher in Szekszárd-Villány, Balaton and Eger. Additionally, and surprisingly, the mortality of CVD correlated positively and significantly with the ID values despite of the small numeric differences. The hardness of drinking water and the level of socio-economic state seem to have a greater impact on the mortality rate of CVD than the consumption of “red” or “white” dominant types of wines at a region. This study shows data on a population larger than 200,000 persons.

25 November 2020 in Life
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KFKlara Fodor
Klara Fodor
ÉSÉva Sipos
Éva Sipos
NDNikoletta Dobos
Nikoletta Dobos
JNJános Nagy
János Nagy
ZSZita Steiber
Zita Steiber
Gabor HalmosGabor Halmos
Gabor Halmos
Uveal melanoma (UM) is the most common malignant tumor of the eye with extremely high metastatic potential. UM tumor cells can disseminate only hematogenously, thus, angiogenic signals have a particular role in the prognosis of the disease. Although the presence of cancer stem cells (CSCs) in densely vascularized UMs has been reported previously, their role in the process of hematogenous spread of UM has not been studied. In this study, we investigated the regulation of angiogenesis in UM in correlation with the presence of CSCs. Seventy UM samples were collected to analyze the expression of CSC markers and angiogenic factors. The expression of CSC markers was studied by RT-PCR, Western blotting techniques and IHC-TMA technique. RT-PCR showed high expression of CSC markers, particularly nestin, FZD6 and SOX10 and somewhat lower expression of NGFR. The protein expression of FZD6, HIF-1α and VEGFA was further evaluated in 52 UM samples by the IHC-TMA technique. We report here for the first time a significant correlation between FZD6 and VEGFA expression in UM samples. The observed correlation between FZD6 and VEGFA suggests the presence of CSCs in UM that are associated with the vascularization process.