A slack-based DEA analysis for the world cup teams

Gökgöz, Fazıl; Yalçın, Engin

doi:10.1108/tpm-07-2021-0050

Cited by 11 publications

(5 citation statements)

References 49 publications

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“…Awareness of finite energy sources has called for countries to act more cautiously in terms of resource use. To this end, the concept of CE makes important contributions to understanding both the economy and the environment (Gökgöz et al, 2021). There is no unique definition of CE, as we can confirm for instance from Kirchherr et al (2017), who analysed 114 definitions of CE.…”

Section: Literature Reviewmentioning

confidence: 86%

Consumption behavior towards the circular economy

Kulli,

Grzywińska-Rąpca,

Duarte

et al. 2023

Central European Economic Journal

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The article focuses on the consumption of goods used by consumers of different generations from 3 different countries: Albania, Polish and Portugal. The aim of the analysis was to identify respondents‘ indications concerning: (1) knowledge of the definition of the circular economy, (2) declared by respondents places of purchase of used products and (3) type of purchased products used by respondents. The analysis was conducted among 495 respondents from Albania, Polish and Portugal representing three generations (X, Y, Z). Correspondence analysis was used for statistical data analysis. Statistically significant differences in knowledge of the definition of the circular economy were shown between respondents from Albania, Polish and Portugal. It was also found that respondents‘ preferences regarding the place of purchase of second-hand goods are differentiated (at a statistically significant level) by nationality and year of birth (generation). The obtained results open the possibility of further research aimed at identifying different behaviors among these groups of consumers. The presented work, both in the cognitive and application part, can be a source of knowledge and popularization of research, as well as a source of inspiration for in-depth reflection and scientific discussion. The analyses presented in the publication may complement the existing research in the field of circular economy. Extending the survey to other EU countries can help define a strategy for policymakers, manufacturers and retailers to make greater use of circular economy solutions, while maintaining the viability of their operations.

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Section: Literature Reviewmentioning

confidence: 86%

Consumption behavior towards the circular economy

Kulli,

Grzywińska-Rąpca,

Duarte

et al. 2023

Central European Economic Journal

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“…DEA has gone through a rapid development process both methodologically and theoretically with the introduction of the CCR model (Gökgöz and Yalçın, 2022b, 2023a). In the following years, this version expanded with the addition of the convexity constraint (Cooper et al ., 2011).…”

Section: Methodsmentioning

confidence: 99%

Investigating the financial efficiencies and productivities of the banking sector

Gökgöz,

Yalçın,

Salahaldeen

2023

JES

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PurposeThe banking industry, which is one of the most significant industries when taking into account both deposit sizes and employment statistics in Turkey, is one of the country's primary economic drivers. In this regard, it is highly important to evaluate banks as it is necessary to present to what extent they use their resources efficiently. The main purpose of the study is to analyze the efficiencies of Turkish banks by the two-stage data envelopment analysis (DEA) and Malmquist productivity index (MPI).Design/methodology/approachThe authors aim to analyze both the efficiency and productivity of Turkish banks by two-stage DEA and the MPI, which enable decomposing into sub-sections of production processes. Hence, more detailed insight into the Turkish banking system can be presented through two-stage efficiency and production approaches.FindingsDEA results indicate that two out of three state-owned banks achieved resource efficiency while none of the investigated banks performed profit efficiency throughout the investigated period. Besides, average resource efficiency is found higher than average profit efficiency in Turkish banks. MPI results reveal that both technological and technical improvement prospects exist for Turkish banks.Originality/valueThe original contribution of this paper is to employ two-stage DEA and the MPI, which reflect both the static and dynamic performance of the Turkish banking sector. In this regard, this study aims to be a pioneer by both reflecting the static and dynamic performance analysis of Turkish banks.

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“…53 DMU is estimated by the SBM-DEA model to be at the farthest point on the efficient frontier thus by attaining the highest slacks, the objective function is decreased. 54,55 minp ¼…”

Section: The Slack-based Dea Approachmentioning

confidence: 99%

An environmental, energy, and economic efficiency analysis for the energy market in European Union

Gökgöz

Yalçın

2023

Env Prog and Sustain Energy

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Energy and environmental issues have been high on agendas of European Union members since they are intertwined with efforts to mitigate climate change and expand the economy. We intend to analyze the energy and environmental efficiency of EU countries using enhanced data envelopment analysis techniques. First, our study investigates energy efficiencies using the bootstrap DEA technique, which addresses the problem of statistical noise. Further, we examine the environmental and eco-innovation efficiency of EU countries by employing the two-stage superslack-based DEA technique, which is one of the most suitable approaches for modeling undesired output. According to the environmental efficiency findings, the Nordic countries are primarily more efficient whereas, in terms of eco-innovation efficiency, Germany is ranked as the top-performing country. In addition, substantial prospects for improvements exist in the efficiency of the EU countries We may conclude that this research will help policymakers in this area.

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A slack-based DEA analysis for the world cup teams

Cited by 11 publications

References 49 publications

Consumption behavior towards the circular economy

Consumption behavior towards the circular economy

Investigating the financial efficiencies and productivities of the banking sector

An environmental, energy, and economic efficiency analysis for the energy market in European Union

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