Találati lista | Tudóstér

001-es BibID:	BIBFORM103302
035-os BibID:	(cikkazonosító)7985 (Scopus)85136577074 (WOS)000846258700001
Első szerző:	Herman Emilia (közgazdász)
Cím:	Cluster Analysis with K-Mean versus K-Medoid in Financial Performance Evaluation / Herman Emilia, Zsido Kinga-Emese, Fenyves Veronika
Dátum:	2022
ISSN:	2076-3417
Megjegyzések:	Nowadays there is a large amount of information at our disposal, which is increasing day by day, and right now the question is not whether we have a method to process it, but which method is most effective, faster and best. When processing large databases, with different data, the formation of homogeneous groups is recommended. This paper presents the financial performance of Hungarian and Romanian food retail companies by using two well-known cluster analyzing methods (K-Mean and K-Medoid) based on ROS (Return on Sales), ROA (Return on Assets) and ROE (Return on Equity) financial ratios. The research is based on two complete databases, including the financial statements for five years of all retail food companies from one Hungarian and one Romanian county. The hypothesis of the research is: in the case of large databases with variable quantitative data, cluster analysis is necessary in order to obtain accurate results and the method chosen can bring different results. It is justified to think carefully about choosing a method depending on the available data and the research aim. The aim of this study is to highlight the differences between the results of these two grouping procedures. Using the two methods we reached different results, which means a different evaluation of financial performance. The results demonstrate that the method chosen for grouping may influence the assessment of the financial performance of companies: the K-Mean method produces a greater variety of groups and the range of results obtained after grouping is larger; whereas, the group distribution and the results obtained by the K-Medoid method are more balanced.
Tárgyszavak:	Társadalomtudományok Gazdálkodás- és szervezéstudományok idegen nyelvű folyóiratközlemény külföldi lapban folyóiratcikk database cluster analysis K-Mean method K-Medoid method financial performance financial statements food retail companies Hungary Romania
Megjelenés:	Applied Sciences-Basel. - 12 : 16 (2022), p. 1-19. -
További szerzők:	Zsidó Kinga Emese (1979-) (közgazdász) Fenyves Veronika (1978-) (gazdasági agrármérnök)
Internet cím:	Szerző által megadott URL DOI Intézményi repozitóriumban (DEA) tárolt változat
Borító:
Saját polcon:

001-es BibID:	BIBFORM102041
035-os BibID:	(cikkazonosító)5012 (Scopus)85130682602 (WOS)000801771800001
Első szerző:	Pusztai László Péter (logisztikai menedzser)
Cím:	Selection of Production Reliability Indicators for Project Simulation Model / Pusztai László Péter, Nagy Lajos, Budai István
Dátum:	2022
ISSN:	2076-3417
Megjegyzések:	Due to technological enhancements, traditional, qualitative decision-making methods are usually replaced by data-driven decision-making even in smaller companies. Process simulation is one of these solutions, which can help companies avoid costly failures as well as evaluate positive or negative effects. The reason for this paper is twofold: first, authors conducted a Quality Function Deployment analysis to find the most vital reliability indicators in the field of production scheduling. The importance was acquired from the meta-analysis of papers published in major journals. The authors found 3 indicators to be the most important: mean time between failure (MTBF), mean repair time and mean downtime. The second part of the research is for the implementation of these indicators to the stochastic environment: possible means of application are proposed, confirming the finding with a case study in which 100 products must be produced. The database created from the simulation is analyzed in terms of major production KPIs, such as production quantity, total process time and efficiency of the production. The results of the study show that calculating with reliability issues in production during the negotiation of a production deadline supports business excellence.
Tárgyszavak:	Társadalomtudományok Gazdálkodás- és szervezéstudományok idegen nyelvű folyóiratközlemény külföldi lapban folyóiratcikk production reliability reliability mean time between failure (MTBF) mean time to repair (MTTR) process simulation project production
Megjelenés:	Applied Sciences-Basel. - 12 : 10 (2022), p. 1-15. -
További szerzők:	Nagy Lajos (1964-) (agrármérnök) Budai István (1977-) (folyamatmérnök)
Internet cím:	Szerző által megadott URL DOI Intézményi repozitóriumban (DEA) tárolt változat
Borító:
Saját polcon:

001-es BibID:	BIBFORM096810
035-os BibID:	(cikkazonosító)3200 (Scopus)85104051804 (WOS)000638379900001
Első szerző:	Sipos László
Cím:	Eye-Tracker Analysis of the Contrast Sensitivity of Anomalous and Normal Trichromats : a Loglinear Examination with Landolt-C Figures / Sipos László, Gere Attila, Kókai Zoltán, Nyitrai Ákos, Kovács Sándor, Urbin Ágnes, Samu Krisztián, Wenzel Klára
Dátum:	2021
ISSN:	2076-3417
Megjegyzések:	Selected and expert sensory assessors should not have any deficiencies that could affect their perception and adversely affect their sensory performance and thus affect the reliability of their evaluations. In sensory practice, numerous pseudoisochromatic images have been developed to test color vision, and the anomaloscope is used instrumentally. The eye-tracking and series of achromatic and colored pseudoisochromatic tests used in our research, and their combination, provide detailed analytical possibilities for the eye movements of the subjects. By testing the achromatic and colored figures, the decision and decision time of groups with different contrast sensitivity can be evaluated together with the survival analysis. The combined method can also be used for diagnostic testing of color vision. The contrast sensitivity of normal and anomalous trichromats were examined with Landolt-C figures by eye-tracking system. For the measurements, two series of test images (achromatic and colored) were designed. The difficulty levels of the tests were gradually increased after each right answer. In the case of the observation of the ring of the Landolt-C figures, the variables related to fixation duration, fixation count, visit duration and count significantly affected this subject, success or image parameters, and their interactions. The main questions of this study were as follows: Which statistical method is suitable to model the differences between anomalous and normal trichromats? Which eye-movement variables have a significant effect on the investigated parameters and on their interactions? Is there any significant difference between eye-movement variables of normal and anomalous trichromats? How does the survival time of anomalous and normal trichromats change in the case of achromatic and colored figures? The results showed that the right answers of anomalous and normal trichromats can be described with multiple or cross-classified contingency tables evaluated effectively by loglinear regression. The survival analysis showed that normal trichromats are more successful in interpreting colored images, while anomalous trichromats seemed to be more efficient in perceiving achromatic images.
Tárgyszavak:	Társadalomtudományok Gazdálkodás- és szervezéstudományok idegen nyelvű folyóiratközlemény külföldi lapban folyóiratcikk color-vision deficiency Landolt-Ceye-tracker loglinear regression Scheirer-Ray-Hare test
Megjelenés:	Applied Sciences-Basel. - 11 : 7 (2021), p. 1-18. -
További szerzők:	Gere Attila Kókai Zoltán Nyitrai Ákos Kovács Sándor (1978-) (matematika tanár) Urbin Ágnes Samu Krisztián Wenzel Klára
Internet cím:	Szerző által megadott URL DOI Intézményi repozitóriumban (DEA) tárolt változat
Borító:
Saját polcon:

001-es BibID:	BIBFORM115818
035-os BibID:	(cikkazonosító)12061
Első szerző:	Szalóki Melinda (vegyész)
Cím:	The Surface Free Energy of Resin-Based Composite in Context of Wetting Ability of Dental Adhesives / Melinda Szalóki, Zsófia Szabó, Renáta Martos, Attila Csík, Gergő József Szőllősi, Csaba Hegedűs
Dátum:	2023
ISSN:	2076-3417
Tárgyszavak:	Orvostudományok Klinikai orvostudományok idegen nyelvű folyóiratközlemény külföldi lapban folyóiratcikk
Megjelenés:	Applied Sciences-Basel. - 13 : 21 (2023), p. 1-17. -
További szerzők:	Szabó Zsófia Sára (1989-) Martos Renáta (1975-) (fogszakorvos) Csik Attila (1975-) (fizikus) Szőllősi Gergő József (1991-) (népegészségügyi ellenőr, népegészségügyi szakember) Hegedűs Csaba (1953-) (fogszakorvos)
Internet cím:	Szerző által megadott URL DOI Intézményi repozitóriumban (DEA) tárolt változat
Borító:
Saját polcon: