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1.

001-es BibID:BIBFORM098403
Első szerző:Csipkés Margit (gazdasági agrármérnök)
Cím:The use of renewable energies in the Visegrad Group and Romania / Csipkés Margit, Czeglédi László
Dátum:2018
ISSN:1222-569X 1582-5450
Tárgyszavak:Társadalomtudományok Gazdálkodás- és szervezéstudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
Megjelenés:The Annals of the University of Oradea. Economic Sciences. - 1 : 1 (2018), p. 73-79. -
További szerzők:Czeglédi László (1992-) (logisztikai menedzser)
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2.

001-es BibID:BIBFORM097214
Első szerző:Csipkés Margit (gazdasági agrármérnök)
Cím:Optimization of the production structure of field energy crops / Csipkés Margit, Gál Tímea
Dátum:2016
ISSN:1222-569X 1582-5450
Megjegyzések:In our paper we have dealt with the biomass-based energy production during the agricultural production, since the sustainable energy management is one of the most actual issues. In our paper we have dealt with the biomass-based energy production during the agricultural production, since the sustainable energy management is one of the most actual issues. In our research we wanted to know how much renewable energy could be produced on a field of 1800 hectares with five plants (silage maize, Lucerne, wheat, maize, sunflower). Data of the energy content were collected from literature, all other data were collected from a company in the Northern Great Plain Region with 1800 hectares and the information from the Institute of Agricultural Engineering (IAE). Besides, we analysed how much income could be reached and for what the produced energy could be used, what demand it could meet by replacing fossil energy sources having high environmental pressure. Crop production technologies applied in the model were set up by the practical experiences of a real agricultural company. Working operations were set on a monthly basis with the assignment of prime mover machinery relations. The material needs of the working operations were also set (fertilizers, pesticides, sowings, twines, silage foil) where it was needed. To answer our research question two model variants were elaborated. In the first model variant the five crops were competed by the maximum energy content, and in the second variant by the maximum gross margin. Production optimization was done for 1800 hectares. We supposed that 100% of the plant products are marketed (animal farms are not considered), and in the model only raw material production is done (further processing of plant products for energy purposes are not part of this analysis). Besides, we supposed that these five plants will be used as: by-products (wheat straw, maize stem, sunflower stem) and Lucerne hay by direct combustion; bioethanol from wheat and maize grain; biodiesel from sunflower grain; biogas from silage maize.
Tárgyszavak:Társadalomtudományok Gazdálkodás- és szervezéstudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
Megjelenés:Annals of the University of Oradea Economic Science. - 25 : 1 (2016), p. 527-537. -
További szerzők:Gál Tímea (1985-) (gazdasági agrármérnök)
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3.

001-es BibID:BIBFORM097213
Első szerző:Csipkés Margit (gazdasági agrármérnök)
Cím:Analysis of Romania's energy management from 2000 until today / Csipkés Margit, Nagy Sándor, Gál Tímea
Dátum:2017
ISSN:1222-569X 1582-5450
Megjegyzések:The aim of energy management is to provide good quality and proper quantity energy in an economic and continuous way for the energy consumers in different parts of the country with minimal energy costs. We did our calculations because many changes happened during the last 15 years in the energy management of Romania. Year by year the percent of the import energy is increasing. Most of the energy is produced by nuclear, hydro and thermal plants. Looking at the year 2016 in the energy production of Romania the most dominant is the coal and gas usage to produce electric energy in thermal plants. In this paper we wanted to look through the energy management of Romania both in the field of conventional and renewable energy sources based on different aspects. In our research we have made several forecasts considering the consumption and production. In this paper we have reviewed the Romanian energy management from 2000 until recently, since a continuous change can be seen in the energy management of Romania. In the analysis descriptive statistics, dynamic indices and polynomial trend values were used. At the calculations many databases were taken into consideration. For some of the analysis we used the data found on Transelectrica. Besides, we used the data of BP Statistical Review of World Energy and their descriptions. In case of Romania we also utilized the governmental strategies, professional political materials, action plans and different professional studies as well. In the course of our research we used long time series in which the component effect of the time series must be filtered out, so it had to be ♭smoothened'. There are two methods for this: the method of moving averages and the analytical trend calculation. We chose the analytical trend calculations (polynomial trend function) based on the proper fitting.
Tárgyszavak:Társadalomtudományok Gazdálkodás- és szervezéstudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
Megjelenés:Annals of the University of Oradea Economic Science. - 26 : 1 (2017), p. 44-45. -
További szerzők:Nagy Sándor Gál Tímea (1985-) (gazdasági agrármérnök)
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4.

001-es BibID:BIBFORM097183
Első szerző:Csipkés Margit (gazdasági agrármérnök)
Cím:The electricity market of Hungary and Romania in the past five years / Csipkés Margit
Dátum:2017
ISSN:1222-569X 1582-5450
Megjegyzések:The European Parliament and 2009/28/EK Council Directive sets mandatory targets for energy from renewable energy sources for EU Member States. As much of the energy management of Hungary and Romania is currently based on fossil energy sources, so that CO2 emissions are only slightly reduced compared to the previous period. In order to reduce the volume of greenhouse gases, both countries should increasingly involve renewable energy sources in their energy management. Renewable energy sources are durable energies that are constantly reproduced and therefore inexhaustible. Alternative energy sources include solar energy, wind energy, hydropower, geothermal energy and biomass in different forms. The importance of renewable energy sources is that their use is in line with the principles of sustainable development, as opposed to the use of non-renewable energy sources, does not cause cumulative adverse effects such as greenhouse effect, air pollution, water pollution. Not only because of the global warming crisis, but also because of the temporal overcrowding of global oil production, it is also necessary to separate from non-renewable resources.
Tárgyszavak:Társadalomtudományok Gazdálkodás- és szervezéstudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
Megjelenés:The Annals of the University of Oradea. Economic Sciences. - 26 : 2 (2017), p. 300-311. -
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5.

001-es BibID:BIBFORM097182
Első szerző:Csipkés Margit (gazdasági agrármérnök)
Cím:Formation of migration potencial in Hungary from 2000 until today / Csipkés Margit, Nagy Sándor
Dátum:2017
ISSN:1222-569X 1582-5450
Megjegyzések:When hearing international migration we can think of two things. One is the emigration process while the other is the wave of refugees. In our study we examined the changes of the number of employees emigrating from Hungary from 2000 until today. Examining the migration potential can be viewed as a very important topic nowadays in Hungary, since the rate of Hungarian emigrants started to grow after 2006 and the rate of growth got faster after 2010. The reason of fastening was the opening of the Austrian and German labor market. The actuality of the topic lays in the fact that international emigration melts the labor market's processes, influences the given country's employment level, moreover it has an influencing role on the rate of wages. Emigration from the given state can have several reasons: natural damage, war, marginalization, economic reasons, etc. In our study we examine emigration caused by economic reasons. We have to take into consideration that measuring emigration is hard in every country (in this way, in Hungary as well), due to the deficiency of data. The reason of deficiency is that those who leave for abroad often forgot to report their leaving for abroad. The reason of this is that from March 1, 2013, only the permanent foreign settlement should be reported towards the administration (District Office, Consulate). Earlier, the temporary (more than 3 months) settlement was also obligatory to be reported Many leaving Hungarian forgets that that working on abroad for more than 3 months should be reported in every case towards Social Insurance organizations and Tax Authorities. That is why we emphasize that the introduction of migration potential made by us does not show any direct correlation with the actual migration, however, with the help of this study, the expected measure of moving could be recognized along with the expected composition of emigrants.
Tárgyszavak:Társadalomtudományok Gazdálkodás- és szervezéstudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
Megjelenés:The Annals of the University of Oradea. Economic Sciences. - 26 : 2 (2017), p. 312-318. -
További szerzők:Nagy Sándor
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6.

001-es BibID:BIBFORM096820
Első szerző:Harcsa Imre Milán (közgazdász)
Cím:Economic analysis of subcontract distilleries by simulation modeling method / Harcsa Imre Milán, Kovács Sándor, Nábrádi András
Dátum:2020
ISSN:1222-569X 1582-5450
Tárgyszavak:Társadalomtudományok Gazdálkodás- és szervezéstudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
Megjelenés:The Annals of the University of Oradea. Economic Sciences. - 29 :1 (2020), p. 39-49. -
További szerzők:Kovács Sándor (1978-) (matematika tanár) Nábrádi András (1956-) (közgazdász, agrárökonómus)
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7.

001-es BibID:BIBFORM074430
Első szerző:Oláh Judit (agrárközgazdász, logisztika)
Cím:Applying big data algorithms for sales data stored in SAP HANA / Judit Oláh, Edina Erdei, József Popp
Dátum:2017
ISSN:1222-569X 1582-5450
Megjegyzések:An increasing number of small and medium enterprises operate and supervise their financial, logistics, production, human resource and other activities with ERP (Enterprise Resource Planning) IT systems, which are capable of managing these processes in a uniform framework. It is our research objective to explore analytical and prediction methods which can provide solutions to various financial and logistics problems that are faced by nowadays' enterprises. In order to achieve this objective, we analysed a real database of an enterprise using SAP. This database covers the period between January 2013 ? October 2016 and contains 7 million sales records of 15,674 different products. These products also include currently inactive items, however, they can still be important from the aspect of data analysis in relation to the examined period. The data structure was created using the recently introduced SAP HANA (High Performance Analytic Appliance) database management system which revolutionised data storage with its in-memory and column-oriented features. This new technology makes it possible to execute various transactions more effectively and more quickly. Following the preparation of the schematics of data needed for processing and the calculation of calculation fields, we used the tools provided by SAP Predictive Analytics which was introduced to the market in 2015. After filtering sales data for 15 quarters, we used k-means clustering for each period. After preparing and examining the clusters, we made observations which make it easier to perform stock management, logistics and pricing activities in the future, thereby contributing to the long-term increase of enterprise profit. Clustering was also performed in R programming language, which enabled us to illustrate the clustering results, i.e., each sales record in 3D, colouring them based on their associated cluster label. After inspecting these graphic outputs, it was concluded that certain products should be withdrawn from the market, while others should be either developed or their stock level increased.We used regression analysis on the cluster centroids to predict the movement of each cluster mainly in terms of time. As a result, we provided an estimation as to the direction that the products belonging to the sales records in each cluster will fluctuate to in accordance with the coordinates of the cluster centroids, thereby making recommendations related to the management of each item and group of items. As a next step, we performed a global F test for regression analysis to examine the correctness of our model. As a conclusion, we reject the null hypothesis which stated that our model is basically invalid
Tárgyszavak:Társadalomtudományok Gazdálkodás- és szervezéstudományok idegen nyelvű folyóiratközlemény külföldi lapban
regression analysis
k-means clustering
R programming language
SAP Predictive Analytics
SAP HANA
Megjelenés:Annals of the University of Oradea Economic Science. - 26 : 1 (2017), p. 453-461. -
További szerzők:Erdei Edina (1992-) (gazdaságinformatikus) Popp József (1955-) (közgazdász)
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8.

001-es BibID:BIBFORM066656
Első szerző:Zulfiqar, Sehar (közgazdász)
Cím:Financial performance of Islamic banks in the United Arab Emirates, Pakistan and Jordan: a case comparative study in a dupont approach / Sahar Zulfiqar, Hossam Haddad, Yahya Al-Shehhi, Domicián Máté
Dátum:2016
ISSN:1222-569X 1582-5450
Megjegyzések:Islamic banking system has observed a high remarkable growth in the circles of global finance since the last three decades. This paper is intended to provide a perspective of Islamic banking in three countries, namely in the United Arab Emirates (UAE), Jordan and Pakistan by analyzing the financial performance of Dubai Islamic Bank (DIB) operating in these countries. A DuPont method is used for our financial analysis. This article consists of two main parts. The first one provides an overview of Islamic banking system and the other represents some empirical findings. In this perspective our study highlights that the financial performance (return on equity) of DIB is better than in UAE comparing to Pakistan and Jordan. The variability of our results can be attributed to several determinants; i.e. different profitability, efficiency and debt policy, and the Islamic institutional environment. Consequently, the age of banks and length of implementation of Islamic banking in the respective countries are also matter.
Tárgyszavak:Társadalomtudományok Közgazdaságtudományok idegen nyelvű folyóiratközlemény külföldi lapban
Islamic Banks
Financial Performance
Dupont Method
Megjelenés:Analele Universităţii din Oradea. Ştiinţe economice = Annals of University of Oradea. Economic science. - 25 : 2 (2016), p. 403-409. -
További szerzők:Haddad, Hossam (1983-) (közgazdász) Alshehhi Yahya Zakareyya Hasan (1972-) (közgazdász) Máté Domicián (1976-) (közgazdász, informatika tanár)
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