İşletme Bölümü

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Determinants of The Export Performance of SMEs: Comparative Analysis of Turkish SMEs Exporting to Middle East and European Regions
(International Journal of Business and Social Science, 2017) Altun, İslam
This study aims to explain determinants of the export performance of Turkish SMEs by focusing on what factors impact the performance of firms mainly exporting to Europe and Middle East. As methodology, comperative analysis will be followed. Further, qualitative method, inductive approach based on a case study and interview data collection method were conducted in order to have reliable data to provide robust analysis. The case study data were collected from 20 small and medium sized Turkish companies exporting to Europe and Middle East regarding their international business activity in order to get direct information by addressing open ended questions to the firm owners. As concluded from interview data, internal factors in the firm level and managerial levels have positive impact on export activities of companies exporting to Europe. Moreover, technological and political environment as external factors have positive effect on export performance of firms as well, whereas economic, social and cultural environment may have some negative effects on the firms. In the firm analysis that export to Middle East countries, some of firm level and managerial level factors have positive effects on the performance while some of them effects it negatively. Additionally, political environment and firms’ technological capabilities have negative effect on export of firms. Unlike the firms exporting European region, social and cultural environment favourably effect export performance of Turkish SMEs that export to Middle East countries.
Citation - WoS: 21
Citation - Scopus: 21
Mathematical model and a variable neighborhood search algorithm for mixed-model robotic two-sided assembly line balancing problems with sequence-dependent setup times
(SpringerLink, 2022) Aslan, Şehmus
Human labor is generally being replaced with robots for high automation, increased fexibility, and reduced costs in modern industry. Few studies consider the sequencedependent setup times in the assembly line balancing literature. However, it should not be overlooked in a real-life setting. This article presents a new mathematical model and variable neighborhood search (VNS) algorithm for mixed-model robotic two-sided assembly line balancing, with the aim of minimizing the cycle time by considering the sequence-dependent setup times. The efectiveness of the proposed VNS is tested with a set of test problems from the literature. The computational results and statistical analysis indicate that the proposed method yields promising results.
COMPACTIFICATION OF WEIGHTED HARDY OPERATOR IN VARIABLE EXPONENT LEBESGUES SPACES
(Asian Journal of Mathematics and Computer Research, 2017) Mamedov, Ferman; Zeren, Yusuf; AKIN, Lutfi
We study necessity and sufficiency conditions for the weighted Hardy operator   x v w H f x v x f t w t dt 0 , ( ) ( ) ( ) ( ) to be compact from Lp(.) (0, l) to Lq(.) (0,l) .
Citation - WoS: 7
Citation - Scopus: 10
On innovations of n-dimensional integral-type inequality on time scales
(2021) Akın, Lütfi
Integral-type inequalities and dynamic equations have an important place in time scales. In this paper, we present some innovations of n-dimensional Minkowski’s integral-type inequality on time scales via ♦α-integral.
Citation - WoS: 3
Citation - Scopus: 2
On generalized weighted dynamic inequalities for diamond - ∝ integral on time scales calculus
(SpringerLink, 2023) Akın, Lütfi
Abstract In this paper, we will prove a new version of generalized exponentially weighted dynamic inequalities of Hardy’s type for diamond / integral on time scales calculus. Our results are a new version of some published works earlier on generalized Hardy’s type integral inequalities.
Some Weighted Martingale Inequalities on Rearrangement Invariant Quasi-Banach Function Spaces
(MSU J. of Sci.,, 2017) AKIN, Lutfi
The Burkholder-Davis-Gundy’s inequalities and the sharp maximal function inequalities for martingale inequalities are established for rearrangement invariant quasi-Banach function spaces. Martingale inequalities very important in mathematic Martingale inequalities are worked by very mathematicians. We will establish some weighted Martingale inequalities for rearrangement invariant quasi-Banach function spaces
Citation - WoS: 13
Citation - Scopus: 22
Entrepreneurship in Crisis: The Determinants of Syrian Refugees' Entrepreneurial Intentions in Turkey
(Sustainability, 2021) Dawoud, Almohammad; Omar, Durrah; Taher, Alkhalaf; Mohamad, Rashid
This study aims to identify the determinants of entrepreneurial intentions among Syrian refugees in Turkey. The research, based on planned behaviour theory, focused on the impact of the refugee context on those intentions and thus on the attitudes and behaviour of entrepreneurs. The study is based on the positivist paradigm, and a quantitative methodology was used to collect data. We preferred the method of convenience sampling and chose 122 entrepreneurial projects at the beginning of 2020. The results show that psychological characteristics have no significant impact. Motivation, conviction, and independence are not sufficient conditions for the choice of an entrepreneurial profession. Self-standards do not affect the entrepreneurial intentions of refugees, as support from family and friends may not be sufficient reason to engage in an entrepreneurial project. However, entrepreneurship emerged among the refugees distinguished by perseverance, efficiency, a spirit of innovation, prior experience, adequate perceptions of barriers, and having the resources needed to implement projects. The refugee context has a negative emotional impact on entrepreneurship for reasons related to conditions of instability, language difficulties, the need for capital to invest, and a lack of entrepreneurial knowledge. The research findings can be used to support the role of humanitarian organisations, UN agencies, and host governments in developing a deeper understanding of entrepreneurial intentions in the refugee context. © 2021 by the authors. Licensee MDPI, Basel, Switzerland.
Determinant of the Export Performance of Small and Medium Sized Companies: Case of the Turkish SMEs
(University of Leicester, School of Management, 2013) Altun, İslam
Small and medium-sized companies have gained more popularity and attention in the international business market. Thus, exporting activity becomes one of the main aims for SMEs in order to attain more benefit from international business. In this perspective, influencing factors of the export performance has gained attention in business literature. The aim of this study is to explain the determinant of export performance of small and medium sized companies, focusing on internal influencing factors; managerial level factors, firm level factors and external influencing factors. The previous studies have attempted to investigate the relations between internal and external factor of companies and export performance. This research based on literature review and case study which is two Turkish small and medium sized companies. Data of this research has been collected through semi-structured interview. According to companies’ data export performance of the companies strongly related with internal and external factors. In addition, this research showed that some factors directly affects the export performance, some other factors have indirectly affects the export performance although a few factor have no influence on export performance of the companies. Due to the companies which are run in different business sectors and exporting to the different countries, different factors have different influence on export performance of the companies.
Citation - WoS: 10
Citation - Scopus: 11
On the Fractional Maximal Delta Integral Type Inequalities on Time Scales
(MDPI, 2020) Akin, Lutfi
Time scales have been the target of work of many mathematicians for more than a quarter century. Some of these studies are of inequalities and dynamic integrals. Inequalities and fractional maximal integrals have an important place in these studies. For example, inequalities and integrals contributed to the solution of many problems in various branches of science. In this paper, we will use fractional maximal integrals to establish integral inequalities on time scales. Moreover, our findings show that inequality is valid for discrete and continuous conditions.
On Some Properties of Hardy- Littlewood Maximal Operators on Hardy Spaces Built upon BFS
(Gece Publishing ABD Adres/ USA Address: 387 Park Avenue South, 5th Floor, New York, 10016, USA Telefon/Phone: +1 347 355 10 70, 2019) AKIN, Lutfi
Operator theory studied by very mathematicians, we refer to [1,2,3,4,5]. Compactification of weighted Hardy operator in variable exponent Lebesgue spaces has been proof by [6]. Generalized duality of some Banach function spaces has been proof by [7]. On two weight criterions for the Hardy-Littlewood maximal operator in BFS has been proven, we refer to [8]. A Characterization of Approximation of Hardy Operators in VLS has been proven by [9]. We know that it is established an integraltype necessary and sufficient condition on weights which provides the boundedness of the Hardy-Littlewood maximal operator from weighted Lebesgue spaces into p-convex weighted BFS, we refer to [11].
Citation - WoS: 20
Citation - Scopus: 21
Industry 4.0 and sustainable business models: An intercontinental sample
(John Wiley and Sons Ltd, 2023) Kılıç, Cumali; Atilla, Gaye
In the rapidly evolving contemporary business landscape, the Industry 4.0 revolution has emerged as an immense and transformative force, fundamentally reshaping industries and presenting significant challenges to prevailing business models. As technology components continued to evolve in response to this revolution, it became increasingly evident that understanding the multifaceted implications of these changes for organizational sustainability is of paramount importance. The overarching goal of this research was to elucidate the intricate interplay between Industry 4.0 technologies and organizational sustainability. To achieve this objective, we conducted a comprehensive exploration of real-world instances where companies boldly embraced Industry 4.0 technologies, subjecting their specific practices and processes to thorough examination. This methodological approach yielded a wealth of invaluable insights into the practical implications of Industry 4.0 on organizational sustainability, effectively bridging the gap between theory and practice. This research underscores the urgent need to provide businesses and decision-makers with insights of paramount significance. The findings of the study aim to serve as a guiding compass for organizations, offering clarity on potential benefits and challenges associated with Industry 4.0 adoption. Notably, within the scope study, the utilization of semi-structured interview technique added a unique dimension, enabling in-depth insights. Interviews were conducted with individuals from diverse nations across different continents, thoughtfully selected based on predefined criteria, setting this research apart in terms of both the sample's size and the remarkable diversity within the participant profile. This diversity enriched the research findings by encompassing various perspectives and experiences, significantly enhancing the depth and breadth of the study's insights.
A Research Approximation to Generalized Riemann Derivatives by Integral Operator Families
(Mathematics and Computer Science, 2018) AKIN, Lutfi
Approximation theory has very important applications of polynomial approximation in various areas of functional analysis, Harmonic analysis, Fourier analysis, application mathematic, operator theory in the field generalized derivatives and numerical solutions of differential and integral equations, etc. Integral operators is very important in Harmonic and Fourier analysis. The study of approximation theory is a well-established area of research which deals with the problem of approximating a function f by means of a sequence n L of positive linear operators. Generalized derivatives (Riemann, Peano and Taylor derivative) are more general than ordinary derivative. Approximation theory is very important for mathematical world. Nowadays, many mathematicians are working in this field.
Citation - WoS: 1
Citation - Scopus: 2
Determinants of the economic adaptation of refugees: the case of Midyat Camp
(2021) Aljasem, Abdulnaser; Abedtalas, Musallam; Lokman Toprak, Wissam Aldien Aloklah, Abdulhamid Alawak, Şehmus Aykol
In the context of the bottom-up approach to development and poverty reduction, this is the first study to use the Sustainable Livelihood Approach (SLA), with a slight adjustment, to study the economic adaptation of refugees within camps. The object- ive of this study was to explore the factors affecting the economic adaptation of refugees in Midyat Refugee Camp in Turkey. The study used a focus group to help design the questionnaire that was subsequently used to collect data from a sample of 393 households in Midyat Camp. The data was used to estimate a Structural Equations Model. The findings indicated that the most important factors in deter- mining refugees’ economic adaptation are human capital, social capital and institutions.
ON TWO WEIGHT CRITERIONS FOR THE HARDY LITTLEWOOD MAXIMAL OPERATOR IN BFS
(Asian Journal of Science and Technology, 2018) AKIN, Lutfi
Our aim of this paper is to prove two-weight criterions for the Hardy-Littlewood maximal operator from weighted Lebesgue spaces into Banach function spaces (BFS). We used boundedness of geometric mean operator and sufficient condition on the weights for boundedness of certain sublinear operator from weighted Lebesgue spaces into weighted Musielak-Orlicz spaces
Corporate Governance and Performance of Islamic Banks: A Comparative Study of Banks in Malaysia and the GCC Countries
(Anemon Muş Alparslan Üniversitesi Sosyal Bilimler Dergisi, 2020) Önal, Mehmet Maksud
This paper contributes to the literature by discussing the relationship between corporate governance and performance of Islamic banks operating in Malaysia and the Gulf Cooperation Council (GCC) countries. The effects of board independence and board size on performance are examined by using relevant analyses. The paper finds that there was a significant and negative relationship between ROA and board independence and it was also a significant predictor of ROE. Malaysian banks were performed better than the GCC banks by comparing the average ROE and ROA and they also had more independent directors. According to the univariate test results, Malaysian banks were performed better than the GCC banks in terms of ROE and Tobin`s Q.
Compactness of Fractional Maximal Operator in Weighted and Variable Exponent Spaces
(Erzincan University Journal of Science and Technology, 2019) AKIN, Lutfi
We have studied necessary and sufficienty conditions for the weighted fractional maximal operator to be compactness from ) , 0( (.) l Lp to ) , 0( (.) l Lq .
ON SOME RESULTS OF WEIGHTED HÖLDER TYPE INEQUALITY ON TIME SCALES
(2020) Akın, Lütfi
The concept of time scales has attracted the attention of mathematicians for a quarter-century. The time scales have a very important place in mathematical analysis. Many mathematicians have worked on this subject and they have achieved good results. Inequalities and dynamic equations are at the top of these studies. Inequalities and dynamic equations contributed to the solution of many problems in various branches of science. In this article, some results of weighted Hölder type inequality are presented via ... integral.
ON SOME RESULTS OF WEIGHTED HÖLDER TYPE INEQUALITY ON TIME SCALES
(2020) Akın, Lütfi
The concept of time scales has attracted the attention of mathematicians for a quarter-century. The time scales have a very important place in mathematical analysis. Many mathematicians have worked on this subject and they have achieved good results. Inequalities and dynamic equations are at the top of these studies. Inequalities and dynamic equations contributed to the solution of many problems in various branches of science. In this article, some results of weighted Hölder type inequality are presented via ... integral.
Mobbing and Suicide: A Case Study on Suicide Incidents in Turkey
(OPUS, 2023)
The frequency and persistence of mobbing behavior, which can occur in all professional groups and organizations, has devastating effects on the victim and in some cases leads to suicide. In this study, the characteristics of the individuals who committed suicide due to workplace mobbing and how they experienced this situation was examined through newspaper news on the internet. Case study, which is a qualitative research approach, was used as the research design. Descriptive content analysis was performed in order to analyse the data. The analyses were made after news about suicide incidents in Turkey were found on the internet by typing "mobbing and suicide". 12 of these suicide cases were associated with mobbing by researchers. These cases were examined in terms of variables such as gender, age, profession, type of suicide, suicide note, psychiatric treatment, mobbing claim and type of mobbing. As a result of the analysis, a relationship was found between mobbing and suicide. It has been determined that the majority of those who commit suicide due to mobbing are women and the age range where suicides occur most frequently is the 25-34 age range. It has been found that the majority of those who commit suicide are single. It has been claimed that the professional group in which suicides occur most frequently is doctors and the most common form of suicide is jumping from a height. It has been determined that some of those who committed suicide received psychiatric treatment. It has been observed that almost half of those who committed suicide left a suicide note. The most common forms of mobbing are It has been revealed that these are threats, work pressure, humiliation, isolation, disregard, gossip, slander, interference with lifestyle, arbitrary practices, obstruction of professional advancement and physical violence.
THE LONG MEMORY BEHAVIOR IN TIME-VARYING BETA: AN EMPIRICAL APPLICATION ON BIST
(Süleyman Demirel Üniversitesi, 2020) Keskin, Hüseyin; Çelik, İsmail
The study aims to investigate the long memory behavior in time-varying beta, a systematic risk indicator, in İstanbul Stock Exchange (BIST) sub-indices. Using the data regarding BIST national indices, sub-indices and twoyear benchmark bond interest rate between January 2009 and September 2019, the time-varying beta coefficient is determined with DECO-FIGARCH model, and the long memory behaviors of the beta coefficient are analyzed with GPH, Lo R / S and GSP tests. It is found that the beta coefficient of the three sub-indices (banking, financial and industrial) changes over time and the beta coefficient demonstrates long memory behavior (mean-reverting at a hyperbolic speed). It is indicated that the time-varying beta coefficients are forecastable and our findings contradict the weak-form of market efficiency.

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