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Following the industrial revolution, factors such as accelerated industrial processes, increased population, urbanization, and deforestation contributed to a variety of environmental issues, particularly global warming. This study proposes a new Data Envelopment Analysis model to assess the environmental activities of developed and developing countries that have signed the Kyoto Protocol. Using the proposed model, Decision Making Units (DMUs) with similar performance were clustered by creating efficient boundaries, and the efficiency improvement of the effective DMUs in each cluster on each other, as well as the efficiency improvement on the ineffective DMUs in the entire data set, were examined. The final efficiency score of the proposed model is calculated by adding the initial efficiency score, which expresses the initial position of the DMUs, and the efficiency improvement over all DMUs. Finally, the full ranking is obtained by sorting the clusters from smallest to largest, as well as the final efficiency scores of the DMUs within each cluster, from largest to smallest. During the study's implementation phase, the environmental effectiveness of 38 countries that signed the Kyoto Protocol and whose data can be accessed based on determined input/output was assessed using the proposed model. The undesirable input/output problem encountered in environmental effectiveness evaluation was addressed by determining a monotonically decreasing function. The ranking obtained with the proposed model was compared to three different models found in the literature. The proposed model defined seven clusters, and Sweden, Switzerland, Iceland and Norway were in the 1st cluster as the DMUs with the highest efficiency scores. [ABSTRACT FROM AUTHOR]

Copyright of Verimlilik Dergisi is the property of Verimlilik Dergisi and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Amaç: Bu çalışmada OECD ülkelerinin COVID-19 pandemisiyle mücadelelerinin ilk bir yıllık sürecindeki kaynak verimliliklerinin aylık ve dönem boyu zaman dilimleri açısından karşılaştırmalı olarak incelenmesi amaçlanmıştır.Yöntem: Araştırmada Veri Zaflama Analizi (VZA) kullanılmıştır. VZA ile ülkelerin aylık ve dönem boyu zaman aralıklarına ilişkin etkinlik skorları elde edilmiştir. Daha sonra ülkelerin verimlilik sıralamalarını belirlemek amacıyla süper etkinlik analizi yapılmış ve ülkelerin ele alınan zaman dilimlerindeki kendi aralarındaki verimlilik sıraları elde edilmiştir.Bulgular: Ülkelerin COVID-19 pandemisiyle mücadele etkinlikleri zaman içerisinde değişmiş, bazı ülkelerin süreç boyunca başarısız olduğu görülmüştür. ABD, Kolombiya ve Yeni Zelanda’nın süreç boyunca en başarılı ülkeler olduğu görülmüştür.Özgünlük: Bu çalışma, OECD ülkelerinin COVID-19 pandemisiyle mücadele verimliliğini karşılaştırırken etkili olacağı düşünülen birçok değişkeni ele alması, belirli zaman aralıklarıyla incelemesi ve sadece verimliliklerinin değil, verimlilik sıralamalarının da belirlenmesi açısından literatürdeki diğer çalışmalardan ayrışmaktadır.

Copyright of Journal of Abant Social Sciences / Abant Sosyal Bilimler Dergisi is the property of Journal of Abant Social Sciences and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Çankırı Karatekin University Journal of the Faculty of Economics & Administrative Sciences is the property of Cankiri Karatekin University, Faculty of Economics & Administrative Sciences and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Emerging Economies & Policy is the property of JOEEP: Journal of Emerging Economies & Policy and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of University Research / Üniversite Araştırmaları Dergisi is the property of Journal of University Research and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Bölgelerin küresel alanda önem kazanmasıyla, kalkınma ajanslarına büyük görevler düşmektedir. Çalışmada Kuzeydoğu Kalkınma Ajansı'nın desteklerinden yola çıkarak bölgesel kalkınma ajanslarının kalkınmaya ve yerel ekonomiye etkileri TRA1 bölgesi özelinde incelenmiştir. Çalışmada, Veri Zarflama Analizi (VZA) kullanılmıştır. Bu çalışmanın amacı; BKA’ları, özel sektörün girişimde çekimser olduğu alanlara yönlendirmek, yeni sanayi bölgelerinin oluşturulması için bölgesel dinamikleri harekete geçirmek ve VZA ile TRA1 bölgesinin etkinlik-verimlilik analizini il bazında değerlendirmektir. Çalışmada KUDAKA’nın bölge kalkınma perspektifine ne ölçüde katkı sağladığı nicel veriler yardımıyla değerlendirilmiştir. VZA sonucunda, Erzurum ve Erzincan’ın etkin sabit ölçek etkinliğine sahip olduğu; Bayburt’un ise artan ölçek etkinliği ile görece daha az etkin olduğu saptanmıştır. CCR sonuçları Bayburt, Erzurum ve Erzincan için sırasıyla 0.31, 1.00 ve 1.00 olarak bulunmuştur. Ayrıca çalışmada, BKA’ların hem ulusal hem de yerel kalkınmada faydalı kurumlar olduğu, Türkiye’de uzak geçmişe sahip olmayan bu yapıların bazı eksiklerinin olduğu ancak yapılacak çalışmalarla bu eksiklerin giderilerek bölgesel kalkınmanın daha ileri seviyeye ulaşacağı öngörülmektedir.

Son yıllarda, sağlık sistemlerinde, hastaların artan beklenti ve ihtiyaçları doğrultusunda hızla gelişmekte olan bağımsız ve tarafsız performans değerlendirme kavramı, denetlenebilir, hasta odaklı, hesap verebilirliği fazla olan, verimli, iyileştirilebilir, sürdürülebilir ve erişilebilir sistemler meydana getirebilmek açısından büyük bir önem taşımaktadır. Performans değerlendirme sürecinin ana aktörlerinden biri, belirli performans göstergelerinin tanımlanabileceği ve sağlık sisteminde gereken alanlarda düzenli olarak kullanılabilecek bir yapının sunulması olmakla beraber, bu sürece netlik kazandırmak amacıyla performansın bütünsel bir görünümünü oluşturabilmek için konuyu odak noktası alan araştırmacılar tarafından, sağlık sisteminin çeşitli yapıtaşlarında farklı araç ve yöntemler kullanılarak çalışmalara devam edilmektedir. Sağlık hizmetlerinde performans değerlendirme, her ne kadar zor ve karmaşık bir süreç olsa da sistemin iyileştirilebilmesi-geliştirilebilmesi adına kritik bir önem taşımaktadır. Bu derleme çalışmasında, sağlık alanında 2011-2021 yılları arasında gerçekleştirilen çeşitli performans değerlendirme çalışmalarında kullanılan araç ve yöntemler incelenerek özetlenmiş, çalışmalarda öne çıkan kavramlar sınıflandırılmıştır. Çalışmanın sonucunda literatürdeki eksikliklerin gözlemlenmesiyle, gerçekleştirilen çalışmanın, mevcut literatüre katkı sağlaması amaçlanmıştır.

It is an undeniable fact that in today's absolute competition environment where there is unprivileged access to information, the population and accordingly the needs are increasing rapidly and scarce resources are decreasing day by day. Health institutions, especially in low-income countries, need to use their existing resources in the most effective way in order to maintain their existence, keep up with the developing market conditions and provide a quality service. In this direction, the aim of this study is to determine how effective and efficient the per capita income, health expenditure per capita, the number of doctors, nurses and midwives are on infant mortality indicators, by using the data envelopment analysis method of countries in the low income group, taking into account the World Bank income classification. In the study, CCR and BCC input-oriented models were used to determine the effectiveness of basic health indicators in reducing infant mortality, which is one of the important health indicators of countries. According to the World Bank income classification, 20 countries from 28 countries belonging to the low-income group, whose data can be fully accessed, were included in the analysis. R Studio package programs were used for the analysis of the research data. As a result of the research, when the total efficiencies of the countries are examined according to the CCR model, it has been determined that 6 countries are effective and 7 countries are effective when the technical efficiency of the countries is examined according to the BCC model. In addition, when the scale efficiency of the countries is examined, it is seen that 11 countries have increasing, 3 countries decreasing and 6 countries have constant returns to scale.. [ABSTRACT FROM AUTHOR]

Globalization, technological changes, competitive conditions, and crises lead businesses to use their resources effectively. Businesses, which have to grow and develop continuously, need a successful evaluation of efficiency in order to achieve their goals and to gain an advantage over their competitors. In this direction, it is aimed to evaluate the financial activities of 26 businesses operating in the BIST food, beverage, and tobacco sector between the years 2018 and 2020, using the DEA CCR and fuzzy DEA CCR methods with 6 input and 3 output ratios. In the research, it was aimed to determine the efficiency values of the enterprises with the classical DEA method and to calculate them with the fuzzy DEA method according to different alpha levels, so that the methods complement each other and reach more consistent results. Since the food sector is important for the national economy, the DEA method used in the analysis part is suitable for efficiency measurement, and the fuzzy DEA method is used in very few studies related to the sector, especially in Turkey, the relevant sector and analysis methods have been preferred. As a result of the study, according to DEA, in 2018, 16 enterprises, 17 enterprises in 2019, and 20 enterprises in 2020 were active. However, as a result of fuzzy DEA, it was understood that the enterprises with the highest efficiency were VANGD and KNFRT, and the enterprises with the lowest efficiency were KERVT and ULUUN. [ABSTRACT FROM AUTHOR]

The importance of women entrepreneurship increases day by day as it has a significant contribution to economic development, job creation, and innovation. Thus, policymakers put more emphasis on the criticality of standardized data, comparative studies, and measurement methods for women's entrepreneurship because these are essential to developing public policy and incentive/support systems. Within the scope of the study, women entrepreneurship performance of OECD countries was evaluated via Data Envelopment Analysis (DEA) and a comparative analysis presented. Input-oriented Charnes Cooper Rhodes (CCR) model was used and the established model was solved using EMS (Efficiency Measurement System). Results show that 11 countries (Denmark, Finland, France, Greece, Lithuania, Luxembourg, Netherlands, Norway, Portugal, Sweden, Switzerland) are efficient countries with their women entrepreneurship performance and as an output of the analysis the inefficient countries and their references are shared. Turkey took 29th place among 30 countries in the means of women entrepreneurship performance and Turkey, France, and Portugal should be taken as references for the improvement activities.

In this study, it is aimed to determine the energy use and greenhouse gas emission in greenhouse tomato production in Antalya and to reduce energy consumption and greenhouse gas emissions by optimizing the inputs to be used. In the study, the amount of energy input and output and the amount of greenhouse gas emissions were found by multiplying the amount of inputs used in greenhouse tomato cultivation with the energy equivalence coefficients and greenhouse gas emission coefficients. The energy equivalent amounts of the inputs and the greenhouse gas emission equivalent amounts were analyzed with the help of data envelopment analysis and the optimum usage amounts and production efficiency of the enterprises were determined. According to the data obtained as a result of the research, the total technical efficiency was determined as 0.833, the pure technical efficiency was 0.975 and the scale efficiency was 0.853 in the enterprises growing greenhouse tomatoes in Antalya. The current energy input of the enterprises is calculated as 7 583.8MJ. It has been determined that a decrease of 9.50% in energy input and 7.81% in GHG emission can be achieved with the provision of efficiency in the enterprises, in other words, with the use of optimum inputs. According to this result, the same output amount as providing technical efficiency in enterprises; 56.66% less chemical fertilizer, 15.08% less fuel, 10.34% less electricity, 8.45% less farm manure, 3.96% less chemical pesticides, 2.72% less machinery. It has been determined that 2.63% less labor and 0.15% less irrigation water energy can be obtained and a 7.81% reduction in GHG emissions can be achieved. Measures to increase labor productivity, especially farmer training on the use of inputs, encouraging the use of renewable energy sources and efficient use of input sources for sustainable agriculture, etc. recommendations are made. [ABSTRACT FROM AUTHOR]

Copyright of Duzce University Journal of Science & Technology is the property of Duzce University Journal of Science & Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Verimlilik Dergisi is the property of Verimlilik Dergisi and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The sustainability impact and reporting results of air transport have become important for societies. In this field, the Global Reporting Initiative presents the reports and databases of many sectors in chronological order. Nowadays, airports all over the world transparently present their sustainability results to the public with a sense of responsibility. In this respect, measuring the sustainability performance of airports, determining the targets, and making the necessary improvements become more of an issue. In this study, the efficiency analysis of 30 international airports included in the comprehensive sustainability database of the Global Reporting Initiative was carried out using the Data Envelopment Analysis (DEA). In this context, common inputs and outputs affecting the sustainability of airports were determined and a sustainability performance measurement model was developed. The relative efficiency scores of the airports were found with the input-oriented CCR method by using the developed model. Thanks to the results, inefficient airports were identified, and necessary improvements were presented to improve sustainability levels. [ABSTRACT FROM AUTHOR]

The aim of this study is to evaluate the performance of Consumer Arbitration Committees, operating in 81 provinces, by Data Envelopment Analysis (DEA). The inputs and outputs of the research model was developed by an expert group specifically for the procedures of Consumer Arbitration Committees. The results of the study conclude that 23 provinces of Consumer Arbitration Committees (Amasya, Ankara, Antalya, Aydın, Batman, Corum, Gumushane, Istanbul, Konya, Mersin, Rize, Sinop etc.) are relatively efficient. [ABSTRACT FROM AUTHOR]

Amaç: İki ya da daha çok şirketin birlikte ürün veya hizmet üretmesi, üretilen ürün veya hizmetlerin satışında ortak çıkarlar doğrultusunda hareket etmesi stratejik ortaklık (strategic alliance) olarak tanımlanmaktadır. Günümüzde özellikle havacılık endüstrisinde faaliyet gösteren havayolu şirketlerinin değişen küresel şartlara daha hızlı uyum sağlamak adına bu tarz stratejik ortaklıklar kurdukları görülmektedir. Buradan hareketle çalışmanın amacı; havacılık sektöründe kurulmuş olan stratejik ortaklıklar üzerinde karşılaştırmalı bir etkinlik analizi gerçekleştirmektir.Yöntem: Çalışmada 59 havayolu şirketine geleneksel Veri Zarflama Analizi (VZA) yöntemine ilave olarak Güven Bölgesi Yaklaşımı (Assurance Region) uygulanmış ve elde edilen bulguların yorumları bu yaklaşım ışığında farklı bir bakış açısı ile gerçekleştirilmiştir.Bulgular: Geleneksel VZA yöntemine kıyasla her bir karar biriminin değişken ağırlıklarına verdikleri önem seviyeleri dikkate alınarak gerçekleştirilen Güven Bölgesi Yaklaşımında oldukça farklı sonuçlar elde edilmiştir. Sonuç: VZA yöntemi altında elde edilen etkinlik değerleri ortalaması %62 civarında iken daha hassas bir yaklaşım olan VZA/AR yöntemi altında etkinlik değerleri ortalaması yaklaşık %30 düşüş ile %44 seviyesine gerilemiştir. Geleneksel VZA yönteminde 11 havayolu şirketi etkin olarak bulunmuşken bu sayı VZA/AR yönteminde sadece 3 tür. Bu da, geleneksel VZA yönteminin hassas analizler konusunda yetersiz kaldığını göstermektedir.

Irish farms are predominately and highly specialized in crops as cereals, protein crops and in dairy productions. The aim of this research was to estimate the economic efficiency in Irish farms part of the Farm Accountancy Data Network (FADN) dataset stratified in function of their own typology of productive specialization since 2004 to 2015 by a quantitative approach such as the Data Envelopment Analysis (DEA). Positive has been the role of inputs as financial subsidies allocated by the Common Agricultural Policy, the first and second pillar, in increasing the economic efficiency of Irish farms. Field crops farms have not had the best results in terms of the economic efficiency even if over the time, in particular during the economic crises 2008-2009, findings have not been stable with significant fluctuations and a sharply decrease of efficiency as a consequence of economic turbulences. Focusing the attention on the research outcomes in all years of investigation comparing also the different typology of farming, mixed farms and farms with animals, such as specialist cattle, sheep, goats and other grazing livestock, have had the highest levels of economic efficiency equal to 100%; by contrast Irish dairy farms have had the modest levels of economic efficiency close to 77%.

In the country plan, versatile structuring measures are required for integration and multidimensional measurement techniques are required to measure the effects of these measures on effectiveness. One of these effectiveness measurement techniques is also Data Envelopment Analysis. Data Envelopment Analysis (DEA) is a linear programming technique planned to measuring effectiveness of decision making units that convert input into output. First of all, different portfolio types were obtained by Particle Swarm Optimization (PSO) algorithm that is one of the artificial intelligence methods in this study. In order to access optimum portfolio, the most preferred parameter values were created in literature and Sharpe performance ratio which is the measure of portfolio performance was used as the goal function. In the study, the data set consisting of the daily return rates of the shares of BIST-30 index between 02/01/2017- 31/12/2017 was analysed for portfolio optimization with PSO algorithm. Data Envelopment Analysis was conducted to measure effectiveness of portfolios with different proceeds and risk ratios as a result of analysis and the portfolio with the least risk and the most proceed was defined as an effective portfolio. Used DEA model was input oriented CCR model. Thus, which portfolios are effective were determined. Then super effectiveness of DMUs were investigated by AP approach and were obtained a rank for effective portfolios and suggestions have been given on how to make ineffective portfolios effective. [ABSTRACT FROM AUTHOR]

Copyright of Accounting & Auditing Perspective Magazine / Muhasebe ve Denetime Bakış is the property of Union of Chambers of Certified Public Accountants of Turkey (TURMOB) and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The public/private sector plays an important role in the efficient/fair presentation of health services to the society and its performance is important for the country. This study aims to evaluate the healthcare performance for OECD countries which Turkey is a member in terms of multi-criteria decision-making (MCDM) methods and data envelopment analysis (DEA). In the analysis, two output and eight input health data for the 35 OECD countries for 2010-2016 are used. CCR (output-oriented DEA model), entropy and CRITICS methods are used to determine the priorities of the criteria/variable in terms of 11 different scenarios with using the data; and OECD countries are raked by using 26 different scenarios with DEA, TOPSIS and GRA methods according to health effectiveness/performance. The infant mortality rate from the output variables is twice more important than the life expectancy, and health equipment investments and health expenditures from the output factors are important than others. The health services efficiency/performance of the OECD countries evaluated via borda counting method. [ABSTRACT FROM AUTHOR]

Copyright of Revue d'Economie Politique is the property of Editions Dalloz Sirrey and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

As known, radical changes have been made in public finance and management system with Public Financial Management and Control Law no 5018. With this law including performance management oriented activities, such as strategic planning, performance program, activity report has also started to be implemented in public enterprises. The subject of study is performance management in public enterprises and the measurement of 2014 and 2015 events of state universities founded after 2000 by data envelopment analysis. As a result of the analysis, relatively effective and ineffective universities h ave b een i dentified, and what has to be done in order for the ineffective universities to be effective universities. [ABSTRACT FROM AUTHOR]

Copyright of Electronic Turkish Studies is the property of Electronic Turkish Studies and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The aim of this study is to determine with Data Envelopment Analysis (DEA) whether health, education and transportation-communication expenditures made in the provinces of Turkey in 2015 were used effectively. CCR model and BCC model were used in analyzing efficiencies of the provinces in Turkey. Output-oriented analyses were performed on both models. In the study, the general situation is shown in terms of Turkey's provinces and various suggestions were made in order to use the resources more effectively in the context of selected Aydın, Denizli and Mugla provinces. As a result, in line with the variables used in the study, Mugla province was found 100% effective in terms of both models (CCR-BCC). Aydın province is 56% efficient according to CCR model and 99% efficient according to BCC model. Denizli province is 61% efficient according to CCR model and 100% efficient according to BCC model. [ABSTRACT FROM AUTHOR]

Copyright of Gazi Journal of Economics & Business is the property of Gazi Journal of Economics & Business and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Research Journal of Politics, Economics & Management / Siyaset, Ekonomi ve Yönetim Araştırmaları Dergisi is the property of Research Journal of Politics, Economics & Management and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of DSI Technical Bulletin / DSİ Teknik Bülteni is the property of DSI Technical Bulletin / DSI Teknik Bulteni and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of International Social Research is the property of Journal of International Social Research and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Nüfusun hızla artmakta olduğu dünyada bireylerin ihtiyaçlarınıkarşılamak ve gelişmekte olan teknolojiler karşısında esnek ve uygun bir yapıya sahip olmak işletmeler için büyük bir önem arz etmektedir. Bu durum sektörlerde ilerleme kaydedebilmek ve az gelişmişveya gelişmekte olan ülkelerde belli bir istikrar seviyesini yakalayabilmek bağlamında önemli bir rol oynamaktadır. Üretim sektörünün alt dallarından olan taşve toprağa dayalısektör ile metal eşya makine ve gereç yapım sektörleri, son yıllarda inşaat ve beyaz eşya sektörlerinde yaşanan gelişmelere paralellik göstermektedir. Özellikle taşve toprağa dayalısektörlerde yer alan çimento sektörü de Türkiye’de inşaat sektöründeki gelişmelerden büyük ölçüde etkilenmektedir ve uzun yıllar boyunca devam edeceği beklenmektedir. Bu sebepten dolayıpetrol ve enerji maliyetlerini minimize etmek ve bu duruma uygun bir çözüm getirebilmek amacıyla birçok faaliyetlerde bulunulmaktadır. Türkiye’deki 2010 ihracat verilerine göre; 113,7 milyar dolarlık toplam ihracat rakamıiçerisinde otomotiv sektörü %15’lik pay ile diğer sektörler arasında ilk sırada yer almaktadır. Bu durum daha kapsamlıbir gözlem yapabilmek amacıyla; hem üretim hem de finansal performansın farklıyöntemlerle ölçülmesi gerektiğini göstermektedir. Bu çalışmada taşve toprağa dayalısektörde faaliyet gösteren 26 işletme ile metal eşya makine ve gereç yapım sektöründe faaliyet gösteren 28 işletmenin 2008-2010 yıllarıarasındaki etkinlik ölçümü ve performans değerlendirmeleri Veri Zarflama Analizi ve TOPSIS yöntemleriyle yapılmasıamaçlanmıştır. Veri Zarflama Analizi uygulanmasında DEA-Solver-LV programıkullanılırken TOPSIS yöntemi uygulamasında ise Sanna programından yararlanılmıştır. İlk olarak 1957 yılında; Farrell, tek bir sektörden bütün bir ekonomiye uygulanabilme imkânıolan bir model oluşturulabileceği, yani herhangi bir kavramın etkinliğini ölçmede etkinliğin de kendi içinde parçalara ayrılabileceği fikrini ortaya atmıştır Eken ve Kale, 2011: 889-901 . Daha sonra 1978 yılında Charnes, Cooper ve Rhades tarafından karar alma birimlerinin etkinliğini ölçme konusunda bir çalışma yapılmışve Farrell’in öne sürdüğü model Veri Zarflama Analizi VZA olarak adlandırılmıştır. Bu yöntemle üretim teknolojilerinin etkinliğini ölçme konusunda bir uygulama gerçekleştirilmiştir Ebnerasoul ve Yavarian, 2009: 42-48 . VZA; yöneylem araştırması, yönetim bilimi ve ekonometriyi bir araya getiren yeni bir çalışma alanıdır. Bu yöntem; üretim ve hizmet faaliyetlerinin etkinliğini ölçmede ve geliştirmede gün geçtikçe artan bir önem kazanmaktadır. Charnes’in yönetim ve ekonomi bilimi gibi farklıalanlarda yaptığıçalışmaların, diğer VZA çalışmalarının yapılmasında büyük bir etkisi olduğu gözlemlenmiştir Wei, 2001: 1321-1332 . Veri Zarflama Analizi ile değerlendirilecek işletmeler ayrıgirdi ve çıktıya sahip olmalarızorundadır. İlgili girdi ve çıktıların belirleyiciliği Veri Zarflama Analizi kullanımıiçin büyük önem arz etmektedir. Aksi halde söz konusu metottan doğru bir sonuca ulaşılamayabilir. TOPSIS; çoklu karar verme yöntemlerinden uygulanmasıkolay olan ve etkin sonuçların alınmasınısağlayan tekniklerden biridir. TOPSIS yönteminin uygulanma sürecinde; performans dereceleri ve kriterlerin ağırlıklarıdüzenli değerler halinde oluşturulmaktadır. Bu nedenden dolayıağırlıkların ve sayısal özelliklerin ölçümlenmesi, herhangi bir rakam üzerindeki kişisel tercihler ile ilgili belirsizlikleri dikkate almaz Soba, Akcanlı, Erem ve Eren, 2011: 413-420 . TOPSIS yönteminin aşamalarıaşağıdaki gibidir Demireli, 2010: 104-106 : • Karar matrislerinin oluşturulması, • Karar matrislerinin normalleştirilmesi, • Normalleştirilen karar matrislerinin ağırlıklandırılması, • Matrislerin maksimum ve minimum değerleri, • Pozitif ideal çözüme yakınlık değerleri negatif ideal çözüme uzaklık değerleri, • Alternatiflerin göreceli sıralanmasıolarak ifade edilebilir. Bu çalışmanın konu alanı İstanbul Menkul Kıymetler Borsası’na kayıtlıve taş-toprağa dayalısektörler ile metal eşya, makine ve gereç yapım sektörlerini kapsamaktadır. Kullanılan Veri Zarflama Analizi modelinde değişkenlerin tanımlanmasıaşağıdaki tabloda gösterilmiştir: Veri zarflama analizi yönteminden elde edilen sonuçlara göre: • Taşve toprağa dayalısektörde 2008 yılında 26 işletme arasından 14 tane göreli etkin işletme olduğu, 2009 yılında ise 8 tane etkin işletme olduğu sonucu elde edilmiştir. Ayrıca Adana çimento, Anadolu cam, Çimsa, Eczacıbaşıyapı, Göltaşçimento, Mardin çimento ve Uşak seramik işletmelerinin 2008 yılındaki etkinliklerini 2009 yılında da koruyabildikleri gözlemlenmiştir. Söz konusu sektörde 2010 yılında 11 tane etkin işletme olduğu sonucuna varılmıştır. Bu üç yıllık değerlendirme göz önüne alındığında; Adana çimento, Çimsa, Eczacıbaşıyapı, Göltaşçimento, Mardin çimento ve Uşak seramik işletmelerinin etkinliklerini korumayıbaşardıklarıgörülmüştür. • Metal eşya, makine ve gereç yapım sektöründe 2008 ve 2009 yıllarında 25 işletme arasından göreli etkin olan işletme sayısı9 tanedir Esas olarak söz konususektörde faaliyet gösteren işletme sayısı28 tanedir, ancak bu işletmelerden Uzel Makine, Katmerciler Ekipman ve Bosch Fren Sistemleri işletmelerinin bilanço ve gelir tablolarına ulaşılamamasısebebiyle çalışma kapsamıdışında tutulmuştur . Söz konusu sektörde 2010 yılında etkin olan işletme sayısı11 tanedir. Ayrıca etkin olmayan işletmeler arasından Emek Elektrik işletmesinin etkinlik değerine 1,0000 en yakın işletme olduğu sonucuna varılmıştır. Benzer yorumlar diğer işletmeler için de yapılabilmektedir. TOPSIS yönteminden elde edilen sonuçlara göre; • Taşve toprağa dayalısektörde 2008 yılında BatıSöke çimento işletmesinin 26 işletme arasında ilk sırada yer aldığıve Eczacıbaşıyapıişletmesinin ise en düşük performans derecesine sahip olduğu görülmüştür. Mardin çimento işletmesi 2009 yılında en yüksek performans derecesine sahip iken, Konya çimento ikinci ve Ünye çimento üçüncü sırada yer almıştır. Konya çimento 2010 yılında birinci sırada yer almışve Eczacıbaşıyapıtekrardan en düşük performans derecesine sahip olmuştur. • Metal eşya, makine ve gereç yapım sektöründe 2008 yılında F-M İzmit Piston işletmesi 25 işletme arasında en yüksek performans derecesine sahip olmuşve diğer iki yılda da performans derecesine düşürmesine rağmen birincilik konumunu korumayıbaşarmıştır. Sonuç olarak; performans değerlemesi ve ya etkinlik ölçümü birçok farklıanaliz teknikleri uygulanarak yapılabilmektedir. Fakat en uygun girdi-çıktıbileşimini belirlemenin çalışmanın sonuçlarıüzerinde önemli bir etkisi olduğu gerçeği de göz ardı edilmemelidir.

In this study, we try to estimate the agricultural production efficiencies of the countries with Data Envelopment Analysis. The constant returns to scale and the variable returns to scale models was used for this estimation. The Meta Frontier approach was applied for efficiency comparison. Totally 215 countries taken into account and they were divided into four groups. Income economies were used to define the groups (Low income, Lower-Middle income, Upper-Middle income and High income economies). Countries were analyzed in their intragroup and whole pooled group. As a result, it is determined that, income economies have a positive effect on the agricultural production efficiency. Besides, it is also determined that the countries are especially inefficient on the usage of the agricultural production area. The countries which are capital-intensive are more efficienct than the countries which are labour-intensive. [ABSTRACT FROM AUTHOR]

Copyright of Sakarya Journal of Economics / Sakarya Iktisat Dergisi is the property of Sakarya Journal of Economics / Sakarya Iktisat Dergisi and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

In the present study, removal of polycyclic aromatic hydrocarbon (PAH) compounds from Bursa organized industry district (OID) treatment sludge with ambient air applications were examined. Effect of titanium dioxide (TiO2) and diethyl amine (DEA) as photocatalysts were determined. ∑ludge samples without addition of photocatalysts and with addition of photocatalyst at the ratio of 5% and 20% of dry sludge weight were exposed to the ambient air conditions for 24 hours. The initial total 12 PAH (Σ12 PAH) concentration in the sludge was measured as 3268±170 ng/g of dry matter (DM). It was observed that PAH concentrations in the sludge did not decrease during the ambient air applications when photocatalysts were not used. Σ12 PAH removal ratio was calculated as 64% with the addition of 5% TiO2 and this value was reached to 76% with increasing of TiO2 amount to 20%. ∑12 PAH removal ratios in the UV-DEA experiments were calculated as 67% and 47% when 5% and 20% of DEA were employed, respectively. It was concluded that TiO2 was more effective photocatalyst than DEA to remove PAHs from the Bursa OID sludge during the ambient air applications. [ABSTRACT FROM AUTHOR]

Competition, had been feeling deeply even in small market shares because of disappearing economic boundaries, can be turned into advantage by using sources efficiently and productively. Competition advantage depends on manufacturing more output by using lesser input and using it efficiently. The aim of the study is to compare 16 firms in Paper and Paper Products, Printing and Publishing Industry, publicly traded in İMKB, with Data Envelopment Analysis (DEA). Input and output variables using in analysis were chosen among financial ratios, which have been using in common. As a result of the study, applied by using data of 2012, average efficiency score of sector was determined as 60.8% and HÜRRİYET, KOZA, DURAN DOĞAN and DENTAŞ use their sources precisely efficient and they were determined as reference firms. Required potential development ratios were calculated in order that the firms can be efficient and necessary suggestions were offered. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Administrative Sciences / Yonetim Bilimleri Dergisi is the property of Canakkale Onsekiz Mart Universitesi, Terzioglu Kampusu and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

In this paper, it is tried to investigate the efficiency of the firms in the manufacturing sector that are listed in the İstanbul Stock Exchange and in the İSO500 by using Data Envelopment Analysis (DEA). Examined a total of 29 firms by 2009 and concluded 8 of this firms efficiently in 21 of them ineffective. The study is also tried to determine input-output quantities which proportions need to make improvement that use ineffective firms come up with effective position [ABSTRACT FROM AUTHOR]

Copyright of International Journal of Economic & Social Research is the property of Abant Izzet Baysal University, Faculty of Economics & Administrative Sciences and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Since the beginning of 1980s while the interaction and importance of finance sector with other sectors increased, it also became the pushing power of economic growth. Especially, the developments in banking sector increased the importance of capital savings and total factor productivity and required more effective usage of sources and diverting productivity to higher stages. As in most of the sectors in economy, inflation level has important effects on process and efficiency of banking sector. The purpose of this study was to see the periodical differences in efficiency of the banks, to define sources, the change and the factors that affect the inefficiency. For that reason, the efficiency of the sector between 1990 and 2008 was carried out using data envelopment analysis (DEA) on two different periods- 1990 and 2000 high inflation period and 2001-2008 low inflation periods. [ABSTRACT FROM AUTHOR]

Copyright of Selcuk University Social Sciences Institute Journal is the property of Selcuk University Social Sciences Institute Journal and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Giriş: Hepatit C virüsü (HCV) tüm dünyada önemli bir sağlık sorunu olup kronik hepatit, karaciğer sirozu ve hepatosellüler karsinomun en önemli nedenlerindendir. Uzun yıllardır interferon (IFN) ve IFN + ribavirin kombinasyonu tedavi rehberlerinde yer almıştı. Ancak son yıllarda tüm rehberler direkt etkili antiviral tedavileri (DEA) önermektedirler. Düşük yan etki profilleri yanında yüksek kalıcı virolojik yanıt sağlayan bu oral antiviral ajanların, kliniğimizde kullanılan hastalardaki gerçek yaşam verilerini değerlendirmeyi amaçladık. Çalışmamızın, kronik hepatit C enfeksiyonu tedavisinde kullanılan rejimlerin etkinlik derecelerini göstermede yol gösterici olacağını düşünüyoruz. Gereç ve Yöntem: Çalışmamız, kronik hepatit C enfeksiyonu tanılı 64 olgunun tanı, takip ve tedavi bilgilerinin retrospektif olarak incelenmesi ile yapıldı. Bu hastalar için uygulanmış değişik tedavi alternatifleri ve bu tedavilerin HCV RNA negatifleşmesi üzerindeki etkileri incelendi. Bulgular: Hastalarımızın 37’si (%58) erkek, 27’si (%42) kadındı. Tedavi başlangıcında olguların ortalama yaşı 55,3±15,1 (yaş aralığı 29-86) idi. Tedavi öncesi HCV-RNA değerlendirmesinde en düşük HCV-RNA değeri 194 IU/ml, en yüksek HCV-RNA değeri 42 milyon IU/ml, ortalama değer ise 2.606.558 IU/ml idi. Olgularımızın 47’si (%73) genotip 1b olarak tespit edildi. Yirmi iki (%34) olguda ALT normalden yüksekti. Bunlar arasında en düşük ALT değeri 56 U/l, en yüksek ALT değeri 172 U/l, ortalama ALT değeri ise 100 U/l idi. Yedi olguda (%11) IFN + ribavirin, 15 olguda (%23) Pegile IFN + ribavirin ile HCV-RNA negatifleşmesi elde edildi. IFN tedavisinden fayda görmeyen 14 olguya (%22) ombitasvir + paritaprevir + ritonavir + dasabuvir verildi, HCV-RNA negatifleşmesi görüldü. On altı olguda (%25) sofosbuvir + ledipasvir, üç olguda (%5) sofosbuvir + ribavirin, dokuz olguda (%14) glecaprevir + pibrentasvir tedavisi verildi ve HCV-RNA negatifliği elde edildi. DEA verilen hastalarda ilaç yan etkisi ve tedavi uyumsuzluğu tespit edilmedi. Sonuç: Olgu serimizde kullanmakta olduğumuz DEA ajanlar ile IFN tedavisinden fayda görmeyen hastalar da dahil olmak üzere kronik hepatit C tedavisinde yüksek kalıcı virolojik yanıt oranları elde edildi. [ABSTRACT FROM AUTHOR]

The main objective of this study is to determine the firms' efficiency and factors affecting it. In order to do that, among 500 leader firms of Turkey 43 were analyzed. In order to achieve the objective, the technical efficiency of firms was determined as efficiency scores by using data envelope analysis. Then by using a TOBIT Model, the effects of independent variables on the scores were determined. According to results, the firms found to be not efficient as a result of not using optimal input combinations and not achieving to the maximum output level. On the other hand, geographic region and size of scale had positive and negative effects on the efficiency, relatively. [ABSTRACT FROM AUTHOR]