İktisadi ve İdari Bilimler Fakültesi / Faculty of Economics and Administrative Sciences

Permanent URI for this collectionhttps://hdl.handle.net/11727/1399

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    Malmquist Index Evaluation of Countries: 2000-2019
    (2023) Farnoudkia, Hajar
    One of the sophisticated mathematical techniques for evaluating the relative efficiency of decision-making units (DMUs) in a multi-inputs-output setting is data envelopment analysis. A non-parametric productivity index called the Malmquist index (MI) tracks changes in a DMU's overall factor output over time. This study seeks to present a broad overview of the changes in the MI for nearly all of the world's nations over 19 years beginning in 3061. This research evaluates a time series data set made up of 16 economic indexes. Each nation's MI, which compares 2000 and 2019, shows how each nation has changed over that period. One of the most important purposes of this study comparing the countries by their MI is that it allows for a fair comparison of productivity across different time periods and regions. It also provides insights into the sources of productivity growth, such as changes in technology or improvements in efficiency. As a result, the countries can allocate resources more wisely and develop more effective investment plans by understanding the elements that lead to productivity increase. By implementing some statistical techniques, nations are further divided into four categories based on their MI. Furthermore, a yearly distribution of the MI has been included to illustrate its trends between the years 2000 to 2019. Finally, the changing flow for some countries of each category is shown in three-year tracks.
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    Who Desires To Stay? The Role Of Relational Job Crafting On The Intention To Stay With The Mediating Role Of Workplace Friendship
    (2022) Cinar, Esra; Basim, H. Nejat
    Drawing on theory of reasoned action and identity theory, we examined the mediating effect of workplace friendship on the association between relational job crafting and the intention to stay. The hypotheses were tested by analysing the data collected from 228 participants. We found positive and significant relationships between the intention to stay and relational job crafting, as well as with workplace friendship. Furthermore, a positive and significant relationship between relational job crafting and workplace friendship was found. The results also indicate that workplace friendship has a partial mediating effect on the relationship between relational job crafting and the intention to stay.
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    Academic Trends in European Union Studies in Turkey within the Framework of Turkey-EU Relations
    (2022) Mercan, S. Sezgin; Bilgin, Kivilcim Romya; Karadag, Haluk; Ongun, Yelda
    The relationship between academics and policymakers has a complex and multi-layered structure, and there are different views on how this relationship should be. While discussing the political processes in the context of Turkey's membership, the interactions between academics and policymakers in the relations between Turkey and the EU have the potential to provide solutions in the steps that need to be taken. However, the academic tendency of EU studies in Turkey will be revealed by answering questions such as what subjects are preferred by academics working on the EU in Turkey to study in the knowledge-production process, which subjects they prioritize in EU studies, what the effects of the ups and downs in Turkey-EU relations are on the academy, and how the academy positions itself in the field of EU studies. It is considered that such a study will contribute to further studies on how the academy's relations with policymakers are and how they should be in studying Turkey-EU relations.
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    An Important Initiative On The Cyprus Problem: Cyprus Turkish Party And Its Relations With The Democratic Party
    (2022) Balyemez, Mehmet
    The roots of Turkey's relations with Cyprus stretches 500-year history. The Turkish presence in Cyprus started in 1571, when the Ottoman Empire conquered Cyprus and remained under Ottoman rule for 307 years. However, this situation changed after the 19th century and the British adminastriation in Cyprus started in 1878. Turkish Cypriots, on the one hand, resisted the Greeks' struggle against Enosis, and on the other hand, struggled to get their social, political and cultural rights in the Ottoman period. The governments of Turkey, while partially support the struggle of Turkish Cypriots from the Lausanne Peace Treaty to the period up to 1950th and showed efforts to maintain the equilibrium established in the Mediterranean. This situation started to change after the 1950s, when the Democratic Party came to power. Greece's decision to support the Enosis request of the Greek Cypriots and in this context, in 1954 the issue to the UN in 1955 with the transport of violence began on the island of Cyprus is one of the important improvements that will change its also directed to Turkey's policy on Cyprus to Turkey. The Cyprus Turkish Party was established in August 1955, when these developments were most intense, and started its political life. Established with the support of the Democratic Party of Cyprus Turkish Party, after Turkey's Cyprus policy of facilitating the implementation of Turkey's ruling party in 1958 to increase the reduction to the public starting public support has a
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    New Organizations in Complex Networks: Survival and Success
    (2022) Asbas, Caner; Senyuva, Zuhal; Tuzlukaya, Sule
    Purpose: The present study investigates the survival and success of new organizations in the light of complex network theory. Methodology: The empirical data was collected using the survey method from the technology park companies are analyzed with social network analysis. Two main methods were used in this study: descriptive statistics and social network analysis. Findings: The findings indicate that new nodes appearing because of splitting up of bigger nodes from present or other related networks have a higher degree of centrality. In practice, this means that companies founded by former members of large-scale companies from these networks are more successful due to the ease in providing the flow of resources and information through previous links. This suggests that the imprint effect can be observed in the appearance, lifecycle, and performance of new nodes in complex networks. Originality: The literature lacks studies on new organizations' lifecycle in complex networks despite the existence of studies about new organizations in organizational networks. This study examines the appearance, success, and survival of new organizations in networks by complex network approaches such as dynamism, dissipative structures, and uncertainties.
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    A new Keynesian model with unemployment: The effect of on-the-job search
    (2021) Kantur, Zeynep; Keskin, Kerim; https://orcid.org/0000-0002-5756-6457
    Although new Keynesian models with labor market frictions report an increase in unemployment and a decrease in labor market tightness in response to a positive technology shock, which appears to be in line with recent empirical findings, the volatilities of these variables are not as high as their empirical counterparts. This calls for the introduction of new modeling tools to amplify the volatilities of the unemployment rate and labor market tightness. Along this line, this paper contributes to the theoretical literature by studying the effect of employment-to-employment flow in a new Keynesian model with labor market frictions. We consider two types of firms that offer different wage levels, which incentivize low-paid agents to search on the job. Differently from the existing literature, the main source of wage dispersion is the difference between firms' bargaining powers. The proposed model generates a higher volatility of unemployment and labor market tightness in response to a positive technology shock compared to the model without on-the-job search, without causing a significant change in the responses of other variables.
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    Foreign Direct Investment Among Developing Markets and Its Technological Impact on Host: Evidence from Spatial Analysis of Chinese Investment in Africa
    (2021) Hu, Dengfeng; You, Kefei; Esiyok, Bulent
    This paper investigates the technological impact of foreign direct investment (FDI) among developing markets on the host economy, as the distinctive features of FDI from developing countries may induce stronger technologyenhancing effect on the host developing nations than that of FDI from developed economies. Adopting the context of Chinese FDI in a set of 24 African nations during 2006?2017, we first separate structural change from total factor productivity (TFP) to obtain the technological progress series. We then account for spatial dependence in technological progress across countries by employing various spatial models; of these, the Spatial Durbin Model is found to best describe our data. We find that, first, both structural change and technological progress have contributed positively to TFP in Africa. Thus, the latter captures the pure technological change more accurately than TFP does. Second, Chinese FDI in Africa has had a positive and significant effect on the region?s technological progress, whilst non-Chinese FDI (mainly from developed countries) has not, substantiating our expectation of stronger technological benefit for developing economies when FDI is from other developing nations. Finally, there had been negative spatial technological dependence across countries, implying a competitive rather than cooperative relationship among African nations.
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    Welcoming immigrants in Istanbul: Gendering faith-based and professionalised hospitality
    (2021) Senses, Nazli; Farahani, Fataneh
    This article examines the hospitality practices of pro-migrant civil society organisations in Istanbul. Drawing from qualitative interviews, we focus on intersecting gendered, professionalised and faith-based aspects of pro-migrant activities and explore the ways that politically and morally charged ambivalences of hospitality practices are articulated and negotiated. Moreover, by contextualising Turkey's religious and geopolitical particularity as a gatekeeper of Europe, we work with Derrida's concept of plural laws to investigate hospitality practices towards refugees in Istanbul. Civil actors' intentions and attempts to be good citizens, Muslims, and care providers expose the intimate aspects of hospitality - a segue into discourses of displaced subjects' (gendered) deservingness. By portraying how macro-micro, global-local and public-private relations condition hospitality practices, we observe how globalisation is lived intimately, influencing perceptions of deservingness and the prioritisation of displaced subjects' needs.
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    Vine copula graphical models in the construction of biological networks
    (2021) Farnoudkia, Hajar; Purutcuoglu, Vilda
    The copula Gaussian graphical model (CGGM) is one of the major mathematical models for high dimensional biological networks which provides a graphical representation, espe-cially, for sparse networks. Basically, this model uses a regression of the Gaussian graphical model (GGM) whose precision matrix describes the conditional dependence between the variables to estimate the coefficients of the linear regression model. The Bayesian inference for the model parameters is used to overcome the dimensional limitation of GGM under sparse networks and small sample sizes. But from the application in bench-mark data sets, it is seen that although CGGM is successful in certain systems, it may not fit well for non-normal multivariate observations. In this study, we propose the vine copulas to relax the strict normality assumption of CGGM and to describe networks from a variety of copulas alternates besides the Gaussian copula. Accordingly, we evaluate the best fitted bivariate copula distribution for every pairwise gene and compute the estimated adjacency matrix which denotes the presence of an edge between the corresponding genes. We assess the performance of our proposed approach in three network data via distinct accuracy measures by comparing the outputs with the results of the CGGM.
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    Card spending dynamics in Turkey during the COVID-19 pandemic
    (2021) Kantur, Zeynep; Ozcan, Gulserim; 0000-0002-5756-6457
    This paper provides an extensive analysis of card spending during the COVID-19 pandemic in Turkey by using weekly aggregated and sectoral credit and debit card spending data from March 2014 to December 2020. At an aggregated level, we show that aggregate demand decreases significantly at the early stages of COVID-19 and seems to reinstate its pre-COVID trend. However, when we include the pre-existing conditions of Turkey, the 2018 currency crisis, we observe that the recovery in demand is not that strong. To highlight the underlying reasons for structural change in aggregate demand, we estimate the model with stringency index and unemployment-related search index. The estimated model indicates that containment measures and restrictions and fear of job/income loss mainly explain the overall impact of COVID-19 on aggregate demand. We also examined sectoral data to understand aggregate demand dynamics better. Only stable and delayable sector groups have reached a trend above their pre-pandemic trajectories. However, the social and work-related sectors are far from their respective pre-pandemic trend. (C) 2021 The Authors. Published by Elsevier B.V. on behalf of Central Bank of The Republic of Turkey.