Pub Date : 2022-12-01DOI: 10.24193/subbmath.2022.4.16
C. Revnic, F. Pătrulescu
"A free convection problem for bidisperse porous media is considered. The numerical solutions are obtained using an algorithm based on an nonuniform grid. Results for some values of the governing parameters when Rayleigh number is equal to 10^4 are provided."
{"title":"Mathematical modelling of free convection in a square cavity filled with a bidisperse porous medium for large values of Rayleigh number","authors":"C. Revnic, F. Pătrulescu","doi":"10.24193/subbmath.2022.4.16","DOIUrl":"https://doi.org/10.24193/subbmath.2022.4.16","url":null,"abstract":"\"A free convection problem for bidisperse porous media is considered. The numerical solutions are obtained using an algorithm based on an nonuniform grid. Results for some values of the governing parameters when Rayleigh number is equal to 10^4 are provided.\"","PeriodicalId":30022,"journal":{"name":"Studia Universitatis BabesBolyai Geologia","volume":"249 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76884923","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-12-01DOI: 10.24193/subbmath.2022.4.04
Tayeb Hadj Kaddour, A. Hakem
"The goal of this paper is to study the nonexistence of nontrivial solutions of the following Cauchy problem $$left{ begin{array}{ll} u_{tt}+(-Delta)^{beta/2} u+u_{t}=displaystyleint_{0}^{t}left(t-tau right) ^{-gamma}leftvert u(tau ,cdot) rightvert^{p}dtau, cr u(0,x)=u_{0}(x),quad u_t(0,x)=u_1(x),quad xinmathbb{R}^n, end{array}right.$$ where $p>1, 0
{"title":"Blow-up results for damped wave equation with fractional Laplacian and non linear memory","authors":"Tayeb Hadj Kaddour, A. Hakem","doi":"10.24193/subbmath.2022.4.04","DOIUrl":"https://doi.org/10.24193/subbmath.2022.4.04","url":null,"abstract":"\"The goal of this paper is to study the nonexistence of nontrivial solutions of the following Cauchy problem $$left{ begin{array}{ll} u_{tt}+(-Delta)^{beta/2} u+u_{t}=displaystyleint_{0}^{t}left(t-tau right) ^{-gamma}leftvert u(tau ,cdot) rightvert^{p}dtau, cr u(0,x)=u_{0}(x),quad u_t(0,x)=u_1(x),quad xinmathbb{R}^n, end{array}right.$$ where $p>1, 0<gamma <1,,, betain(0,2) $ and $(-Delta)^{beta/2} $ is the fractional Laplacian operator of order $frac{beta}{2}$. Our approach is based on the test function method.\"","PeriodicalId":30022,"journal":{"name":"Studia Universitatis BabesBolyai Geologia","volume":"44 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87518192","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-12-01DOI: 10.2478/subboec-2022-0011
József Poór, Ákos Jarjabka, Zsuzsa Karoliny, Gábor Balogh, Tiszberger Mónika Galambosné, Z. Kőmüves, K. Szabó, Gábor Szabó-Szentgróti
Abstract The regime change in 1989 marked a significant milestone in the development of human resource (HR) management in Hungary. Changes in the legal, institutional and ownership environment placed significantly different demands on the HR work of companies and institutions. It has become very important for organizations to have access to comparative HR data with other organizations related to HR activities. The Cranet international HR university non-for-profit research network, founded in 1989 in Cranfield, England, has a long tradition in this field. Hungarian researchers have participated in Cranet’s international HR research on four occasions so far. In this article, we aim to present the main features of the Cranet HR research in Hungary in 2021. We review the findings and noteworthy results of the research. Where possible, we compare it with relevant data from the 2014-2016 survey.
{"title":"HR Trends and Tendencies in Hungary in the Light of the Experiences of the Latest Cranet Survey 2021","authors":"József Poór, Ákos Jarjabka, Zsuzsa Karoliny, Gábor Balogh, Tiszberger Mónika Galambosné, Z. Kőmüves, K. Szabó, Gábor Szabó-Szentgróti","doi":"10.2478/subboec-2022-0011","DOIUrl":"https://doi.org/10.2478/subboec-2022-0011","url":null,"abstract":"Abstract The regime change in 1989 marked a significant milestone in the development of human resource (HR) management in Hungary. Changes in the legal, institutional and ownership environment placed significantly different demands on the HR work of companies and institutions. It has become very important for organizations to have access to comparative HR data with other organizations related to HR activities. The Cranet international HR university non-for-profit research network, founded in 1989 in Cranfield, England, has a long tradition in this field. Hungarian researchers have participated in Cranet’s international HR research on four occasions so far. In this article, we aim to present the main features of the Cranet HR research in Hungary in 2021. We review the findings and noteworthy results of the research. Where possible, we compare it with relevant data from the 2014-2016 survey.","PeriodicalId":30022,"journal":{"name":"Studia Universitatis BabesBolyai Geologia","volume":"11 1","pages":"1 - 13"},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85162520","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-12-01DOI: 10.2478/subboec-2022-0015
Barrington Graham
Abstract Talent management (TM) is a relatively new management discipline that has generated considerable interest among scholars and practitioners within the past decade. It has been studied extensively among large enterprises and global organizations, but the practices have received limited investigation among Small and Medium Sized Enterprises (SMEs). This research paper uses a systematic review of the existing literature from 55 papers to present some insights into how TM is defined, conceptualized, and practised. An agenda for future research of SMEs TM is presented to spur further study. The paper uses the PRISMA methodology recommended by (Moher et al., (2009) to search the databases of Web of Science, Scopus, and Google Scholar for papers published within the last ten years between 2011-21. The findings confirm that the study of TM in SMEs is a developing field, and while there has been an encouraging increase in the number of publications in the past 10 years, it still lags behind other fields. Thus, there is a need for researchers and academics to accelerate the pace of research.
人才管理(TM)是一门相对较新的管理学科，在过去十年中引起了学者和实践者的极大兴趣。它在大型企业和全球性组织中得到了广泛的研究，但在中小企业(SMEs)中得到的调查有限。本研究论文对现有55篇论文的文献进行了系统的回顾，提出了一些关于TM是如何定义、概念化和实践的见解。本文提出了中小企业知识管理的未来研究议程，以促进进一步的研究。本文采用(Moher et al.，(2009)推荐的PRISMA方法，对Web of Science、Scopus和b谷歌Scholar等数据库检索2011-21年间近十年发表的论文。研究结果证实，中小企业的TM研究是一个发展中的领域，虽然在过去的10年里有了令人鼓舞的增长，但它仍然落后于其他领域。因此，研究人员和学术界有必要加快研究的步伐。
{"title":"A Decade of Talent Management Practices in Small and Medium Sized Enterprises, A Systematic Review of a Developing Field","authors":"Barrington Graham","doi":"10.2478/subboec-2022-0015","DOIUrl":"https://doi.org/10.2478/subboec-2022-0015","url":null,"abstract":"Abstract Talent management (TM) is a relatively new management discipline that has generated considerable interest among scholars and practitioners within the past decade. It has been studied extensively among large enterprises and global organizations, but the practices have received limited investigation among Small and Medium Sized Enterprises (SMEs). This research paper uses a systematic review of the existing literature from 55 papers to present some insights into how TM is defined, conceptualized, and practised. An agenda for future research of SMEs TM is presented to spur further study. The paper uses the PRISMA methodology recommended by (Moher et al., (2009) to search the databases of Web of Science, Scopus, and Google Scholar for papers published within the last ten years between 2011-21. The findings confirm that the study of TM in SMEs is a developing field, and while there has been an encouraging increase in the number of publications in the past 10 years, it still lags behind other fields. Thus, there is a need for researchers and academics to accelerate the pace of research.","PeriodicalId":30022,"journal":{"name":"Studia Universitatis BabesBolyai Geologia","volume":"110 1","pages":"53 - 70"},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80573168","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-12-01DOI: 10.24193/subbmath.2022.4.07
T. Blouhi, M. Ferhat, S. Benmansour
"This paper is devoted to the study of a convex stochastic sweeping process with fractional Brownian by time delay. The approach is based on dis- cretizing stochastic functional differential inclusions."
本文研究了一类具有分数布朗时滞的凸随机扫描过程。该方法是基于离散的随机函数微分内含物。
{"title":"Existence for stochastic sweeping process with fractional Brownian motion","authors":"T. Blouhi, M. Ferhat, S. Benmansour","doi":"10.24193/subbmath.2022.4.07","DOIUrl":"https://doi.org/10.24193/subbmath.2022.4.07","url":null,"abstract":"\"This paper is devoted to the study of a convex stochastic sweeping process with fractional Brownian by time delay. The approach is based on dis- cretizing stochastic functional differential inclusions.\"","PeriodicalId":30022,"journal":{"name":"Studia Universitatis BabesBolyai Geologia","volume":"21 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82912587","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-12-01DOI: 10.24193/subbmath.2022.4.02
Nadjet Laledj, S. Abbas, M. Benchohra, J. Henderson
"This paper deals with some existence results for a class of implicit fractional q-difference equations. The results are based on the fi xed point theory in Banach spaces and the concept of measure of noncompactness. An illustrative example is given in the last section."
{"title":"Existence theory for implicit fractional q-difference equations in Banach spaces","authors":"Nadjet Laledj, S. Abbas, M. Benchohra, J. Henderson","doi":"10.24193/subbmath.2022.4.02","DOIUrl":"https://doi.org/10.24193/subbmath.2022.4.02","url":null,"abstract":"\"This paper deals with some existence results for a class of implicit fractional q-difference equations. The results are based on the fi xed point theory in Banach spaces and the concept of measure of noncompactness. An illustrative example is given in the last section.\"","PeriodicalId":30022,"journal":{"name":"Studia Universitatis BabesBolyai Geologia","volume":"81 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77800083","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-12-01DOI: 10.24193/subbmath.2022.4.13
A. De La Barrera, O. Ferrer, J. Sanabria
"We define and investigate a class of positive de nite kernel so called equivalent-kernel. We formulate and prove an analogous of Paley-Wiener theorem in the context of positive definite kernel. The main ingredient in the proof is Kolmogorov decomposition. Finally, some applications to stochastic processes are given."
{"title":"Positive definite kernels on the set of integers, stability, some properties and applications","authors":"A. De La Barrera, O. Ferrer, J. Sanabria","doi":"10.24193/subbmath.2022.4.13","DOIUrl":"https://doi.org/10.24193/subbmath.2022.4.13","url":null,"abstract":"\"We define and investigate a class of positive de nite kernel so called equivalent-kernel. We formulate and prove an analogous of Paley-Wiener theorem in the context of positive definite kernel. The main ingredient in the proof is Kolmogorov decomposition. Finally, some applications to stochastic processes are given.\"","PeriodicalId":30022,"journal":{"name":"Studia Universitatis BabesBolyai Geologia","volume":"29 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83688542","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-10-14DOI: 10.24193/subbmath.2023.1.01
G. Farkas
"The classical de Jonquieres and MacDonald formulas describe the virtual number of divisors with prescribed multiplicities in a linear system on an algebraic curve. We discuss the enumerative validity of the de Jonquieres formulas for a general curve of genus g."
{"title":"Generalized de Jonqui eres divisors on generic curves","authors":"G. Farkas","doi":"10.24193/subbmath.2023.1.01","DOIUrl":"https://doi.org/10.24193/subbmath.2023.1.01","url":null,"abstract":"\"The classical de Jonquieres and MacDonald formulas describe the virtual number of divisors with prescribed multiplicities in a linear system on an algebraic curve. We discuss the enumerative validity of the de Jonquieres formulas for a general curve of genus g.\"","PeriodicalId":30022,"journal":{"name":"Studia Universitatis BabesBolyai Geologia","volume":"26 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77194893","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-08-01DOI: 10.2478/subboec-2022-0010
R. Rena, A. Kamuinjo
Abstract This study explores the relation between capital, market risks and banks’ liquidity conditions. In estimating the SVAR regression model, Granger causality, impulse-response functions and forecast error variance decomposition were employed and used for estimation of the results. The data sample comprised of commercial banks over the 2009 to 2018 period. The empirical results showed that liquidity shocks are caused by a combination of structural shocks. The Granger causality, impulse-response functions and forecast error variance decomposition documented that sensitivity to market risk is the key factor affecting liquidity conditions in the banking sector in the long run. In addition, the empirical results showed that capital adequacy has minimal impact on liquidity conditions in the short run. The reforming rate to sensitivity to market risk policies, capital adequacy policies and liquidity policy measures can be valuable policy tools to minimize liquidity shortages and avoid insolvent banks.
{"title":"An Empirical Analysis of the Relationship Between Capital, Market Risks, and Liquidity Shocks in the Banking Industry","authors":"R. Rena, A. Kamuinjo","doi":"10.2478/subboec-2022-0010","DOIUrl":"https://doi.org/10.2478/subboec-2022-0010","url":null,"abstract":"Abstract This study explores the relation between capital, market risks and banks’ liquidity conditions. In estimating the SVAR regression model, Granger causality, impulse-response functions and forecast error variance decomposition were employed and used for estimation of the results. The data sample comprised of commercial banks over the 2009 to 2018 period. The empirical results showed that liquidity shocks are caused by a combination of structural shocks. The Granger causality, impulse-response functions and forecast error variance decomposition documented that sensitivity to market risk is the key factor affecting liquidity conditions in the banking sector in the long run. In addition, the empirical results showed that capital adequacy has minimal impact on liquidity conditions in the short run. The reforming rate to sensitivity to market risk policies, capital adequacy policies and liquidity policy measures can be valuable policy tools to minimize liquidity shortages and avoid insolvent banks.","PeriodicalId":30022,"journal":{"name":"Studia Universitatis BabesBolyai Geologia","volume":"10 1","pages":"67 - 83"},"PeriodicalIF":0.0,"publicationDate":"2022-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80906308","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-08-01DOI: 10.2478/subboec-2022-0009
Fatso E. Makuluni, H. Dunga
Abstract This study evaluates the implications that access to credit has on welfare inequality in Malawi in order to address the gap left in previous studies concerning credit. The study employed data from Malawi’s Integrated Household Survey 2017 and used the propensity score analysis to examine what impact access to credit may have on the welfare of Malawian households using consumption per capita as a proxy for household welfare. The study further proceeded to use the generalized Lorenz curve, the Theil indexes as well as the Gini to examine the inequalities present in welfare among the households that access credit and those that do not. The results showed a positive impact of access to credit on welfare as households with access to credit experience lower levels of inequality than those without. However, a closer examination of the Theil’s indexes found that factors unrelated to access to credit had a stronger effect on inter-household inequalities than access to credit. The results imply that the impact that access to credit has on welfare inequality is a positive one, but its effect is substantially small. Thus, implying that policies aimed at enhancing distribution of credit should continue. Simultaneously, a more holistic approach on reducing inequality should be included at both household level and national level to achieve a desired result.
{"title":"The Impact of Access to Credit on Welfare Inequality in Malawi","authors":"Fatso E. Makuluni, H. Dunga","doi":"10.2478/subboec-2022-0009","DOIUrl":"https://doi.org/10.2478/subboec-2022-0009","url":null,"abstract":"Abstract This study evaluates the implications that access to credit has on welfare inequality in Malawi in order to address the gap left in previous studies concerning credit. The study employed data from Malawi’s Integrated Household Survey 2017 and used the propensity score analysis to examine what impact access to credit may have on the welfare of Malawian households using consumption per capita as a proxy for household welfare. The study further proceeded to use the generalized Lorenz curve, the Theil indexes as well as the Gini to examine the inequalities present in welfare among the households that access credit and those that do not. The results showed a positive impact of access to credit on welfare as households with access to credit experience lower levels of inequality than those without. However, a closer examination of the Theil’s indexes found that factors unrelated to access to credit had a stronger effect on inter-household inequalities than access to credit. The results imply that the impact that access to credit has on welfare inequality is a positive one, but its effect is substantially small. Thus, implying that policies aimed at enhancing distribution of credit should continue. Simultaneously, a more holistic approach on reducing inequality should be included at both household level and national level to achieve a desired result.","PeriodicalId":30022,"journal":{"name":"Studia Universitatis BabesBolyai Geologia","volume":"98 1","pages":"50 - 66"},"PeriodicalIF":0.0,"publicationDate":"2022-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76184596","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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