645 research outputs found
Reforming Without Resourcing: The Case of the Urban Water Supply in Zambia
No full textI. Introduction Public water supply systems have increasingly been subject to commercialisation or corporatisation in the developing world. This method is sometimes used as a surrogate for privatisation in circumstances where existing systems of provision are unattractive for multinational water companies. By reforming the public sector in the image of independent and self-sufficient private enterprises, the chief aim of commercialisation is to improve the efficiency of operations often associated with the private sector. (...)Reforming Without Resourcing: The Case of the Urban Water Supply in Zambia
Using the analytic network process (ANP) in a SWOT analysis - A case study for a textile firm
No full text4th International Conference on Intelligent Technologies -- DEC 17-19, 2003 -- Chiang Mai, THAILANDyuksel, ihsan/0000-0002-5799-8794; Yuksel, Ihsan/0000-0002-0011-8872; DAGDEVIREN, METIN/0000-0003-2121-5978Strengths, Weaknesses, Opportunities and Threats (SWOT) analysis does not provide an analytical means to determine the importance of the identified factors or the ability to assess decision alternatives according to these factors. Although the analysis successfully pinpoints the factors, individual factors are usually described briefly and very generally. For this reason, SWOT analysis possesses deficiencies in the measurement and evaluation steps. Although the analytic hierarchy process (AHP) technique removes these deficiencies, it does not allow for measurement of the possible dependencies among the factors. The AHP method assumes that the factors presented in the hierarchical structure are independent; however, this assumption may be inappropriate in light of certain internal and external environmental effects. Therefore, it is necessary to employ a form of SWOT analysis that measures and takes into account the possible dependency among the factors. This paper demonstrates a process for quantitative SWOT analysis that can be performed even when there is dependence among strategic factors. The proposed algorithm uses the analytic network process (ANP), which allows measurement of the dependency among the strategic factors, as well as AHP, which is based on the independence between the factors. Dependency among the SWOT factors is observed to effect the strategic and sub-factor weights, as well as to change the strategy priorities. (C) 2007 Elsevier Inc. All rights reserved.Math Fd
A fuzzy analytic network process (ANP) model to identify faulty behavior risk (FBR) in work system
No full textyuksel, ihsan/0000-0002-5799-8794; DAGDEVIREN, METIN/0000-0003-2121-5978; Yuksel, Ihsan/0000-0002-0011-8872Work system safety is a function of many factors, besides it is dynamic and complex. There may be relations and dependencies among the safety factors. Therefore, work system safety should be analyzed in a holistic manner. In this study, the faulty behavior risk (FBR) which is significant in work system safety is tried to be determined through analytical network process (ANP) which is an extension of analytical hierarchy process and allows analysis of complex systems. Besides, there are many difficulties and limitations in measuring the faulty behavior factors. For this reason, the weights of factors and sub-factors necessary to calculate the FBR are determined by using fuzzy ANP and by this way it was possible to make better decisions in this process. (C) 2007 Elsevier Ltd. All rights reserved
Using the fuzzy analytic network process (ANP) for Balanced Scorecard (BSC): A case study for a manufacturing firm
No full textyuksel, ihsan/0000-0002-5799-8794; DAGDEVIREN, METIN/0000-0003-2121-5978; Yuksel, Ihsan/0000-0002-0011-8872Balanced Scorecard (BSC), which is used as a strategic evaluation tool, is a method of determining business performance using lagging and leading indicators on the basis of vision and strategies. The method suggests that business performance should be evaluated not only by using financial indicators but also simultaneously considering non-financial indicators. It has been revealed in the review of relevant literature that despite the satisfying levels achieved in conceptual and theoretical dimension of Balanced Scorecard, the met hod has some deficiencies in terms of implementation on a quantitative basis and that there remain some problems to be resolved Subject of this study covered the measurement and evaluation dimension of BSC. In the scope of the study, BSC approach was integrated with fuzzy ANP technique so as to determine the performance level of a business on the basis of its vision and strategies. Proposed model has shown that performance indicators with different structures included in BSC approach can be consolidated with the help of fuzzy ANP technique. (C) 2009 Elsevier Ltd. All rights reserved
A fuzzy analytic network process (ANP) model for measurement of the sectoral competititon level (SCL)
No full textyuksel, ihsan/0000-0002-5799-8794; Yuksel, Ihsan/0000-0002-0011-8872; DAGDEVIREN, METIN/0000-0003-2121-5978The purpose of this study is to measure the sectoral competition level (SCL) of an organization within the framework of Porter's five forces analysis by using fuzzy analytic network process (ANP) technique The framework of the study was based on two main thoughts: First is the necessity to approach to the problem on fuzzy logic basis because of complexity and vagueness. which are inherent in the nature of the competition concept. Second is the necessity to take into consideration the mutual Interactions between factors as five forces analysis of Porter suggests so in order to determine SCL. In the scope of the study, firstly the factors and sub-factors which have an impact oil the competition level were determined and then inner dependencies between models and factors were examined The Weights Of sub-factors were determined oil the basis of these examined dependencies and these weights were used for a case Study to determine SCL (C) 2009 Elsevier Ltd All rights reserve
Developing a fuzzy analytic hierarchy process (AHP) model for behavior-based safety management
No full textDAGDEVIREN, METIN/0000-0003-2121-5978; yuksel, ihsan/0000-0002-5799-8794; Yuksel, Ihsan/0000-0002-0011-8872Safety management (SM) is a very important element within an effective manufacturing organization. One of the most important components of SM is to maintain the safety of work systems in the workplace. Safety of work systems is a function of many factors which affect the system, and these factors affect the safety of work systems simultaneously. For this reason, measuring work system safety needs a holistic approach. In this study, the work safety issue is studied through the analytic hierarchy process (AHP) approach which allows both multi-criteria and simultaneous evaluation. Another limitation faced in SM is the inability to measure the variables exactly and objectively. Generally, the factors affecting work system safety have non-physical structures. Therefore, the real problem can be represented in a better way by using fuzzy numbers instead of numbers to evaluate these factors. In this study, a fuzzy AHP approach is proposed to determine the level of faulty behavior risk (FBR) in work systems. The proposed method is applied in a real manufacturing company. In the application, factors causing faulty behavior are weighted with triangular fuzzy numbers in pairwise comparisons. These factors are evaluated based on the work system by using these weights and fuzzy linguistic variables. As a result of this evaluation FBR levels of work systems are determined and different studies are planned for work systems according to the FBR levels. In this way, faulty behavior is prevented before occurrence and work system safety is improved. (c) 2007 Elsevier Inc. All rights reserved
sj-docx-1-jct-10.1177_23800844221124083 – Supplemental material for Single-Implant Overdentures Retained by a Novel Attachment: A Mixed Methods Crossover Randomized Clinical Trial
No full textSupplemental material, sj-docx-1-jct-10.1177_23800844221124083 for Single-Implant Overdentures Retained by a Novel Attachment: A Mixed Methods Crossover Randomized Clinical Trial by R.F. de Souza, A.A. Jabbar, D. Jafarpour, C. Bedos, S. Esfandiari, N.M. Makhoul, D. Dagdeviren, S. Abi Nader and J.S. Feine in JDR Clinical & Translational Research</p
Genetic ablation of lymphocytes and cytokine signaling in nonobese diabetic mice prevents diet-induced obesity and insulin resistance
No full textFull author list omitted for brevity. For full list of authors see article.
Co-author Sezin Dagdeviren is a doctoral student in the Interdisciplinary Graduate Program in the Graduate School of Biomedical Sciences (GSBS) at UMass Medical School.Obesity is characterized by a dysregulated immune system, which may causally associate with insulin resistance and type 2 diabetes. Despite widespread use of nonobese diabetic (NOD) mice, NOD with severe combined immunodeficiency (scid) mutation (SCID) mice, and SCID bearing a null mutation in the IL-2 common gamma chain receptor (NSG) mice as animal models of human diseases including type 1 diabetes, the underlying metabolic effects of a genetically altered immune system are poorly understood. For this, we performed a comprehensive metabolic characterization of these mice fed chow or after 6 wk of a high-fat diet. We found that NOD mice had approximately 50% less fat mass and were 2-fold more insulin sensitive, as measured by hyperinsulinemic-euglycemic clamp, than C57BL/6 wild-type mice. SCID mice were also more insulin sensitive with increased muscle glucose metabolism and resistant to diet-induced obesity due to increased energy expenditure ( approximately 10%) and physical activity ( approximately 40%) as measured by metabolic cages. NSG mice were completely protected from diet-induced obesity and insulin resistance with significant increases in glucose metabolism in peripheral organs. Our findings demonstrate an important role of genetic background, lymphocytes, and cytokine signaling in diet-induced obesity and insulin resistance.Interdisciplinary Graduate Progra
Analysis of the Tradeoff Between Network Lifetime and k-connectivity in WSNs
No full text26th Telecommunications Forum (TELFOR) -- NOV 20-21, 2018 -- Belgrade, SERBIAReliability and network lifetime maximization are two important objectives when designing a Wireless Sensor Network (WSN). However, these two are conflicting objectives. To increase the reliability maintaining k-connectivity is necessary, yet, for higher k values transmission power should be kept at the maximum which reduces the lifetime. In this study we investigate the reliability versus lifetime tradeoff.Telecommunicat Soc, Univ Belgrade, Sch Elect Engn, IEEE Serbia & Montenegro COM Chapter, Telekom Serbija a d, Minist Trade Tousim & Telecommunicat, VLATACOM d o o, ERICSSON, IRITEL a d BEOGRAD, MAKSNET Telekomunikacije, Minist Educ Sci & Technol Dev, MDS, Publ PTT Enterprise Srbija, Republ Agcy Elect Communicat Serbia, ROAMING Networks, TERI Engn, VIP Mobile, CISCO, IEEE Serbia & Montenegro Sect, KAPSCH, Serbian Natl Register of Internet Domain Names, IEEE Commun Soc Serbia & Montenegro Chapter, IEEE Reg 8, mtsTUBITAKTurkiye Bilimsel ve Teknolojik Arastirma Kurumu (TUBITAK) [113E470]Orhan Dagdeviren and Vahid Khalilpour Akram thank to TUBITAK for grant number 113E470
Modelling Contiki-Based IoT Systems
No full textIn this paper, we investigate how model-driven engineering (MDE) of Internet of Things (IoT) systems and Wireless-Sensor Networks (WSN) can be supported and introduce a domain-specific metamodel for modeling such systems based on the well-known Contiki operating system. The unique lightweight thread structure of Contiki makes it more preferable in the implementation of new IoT systems instead of many other existing platforms. Although some MDE approaches exist for IoT systems and WSNs, currently there is no study which addresses the modelling according to the specifications of Contiki platform. The work presented in this paper aims at filling this gap and covers the development of both a modeling language syntax and a graphical modeling environment for the MDE of IoTs according to event-driven mechanism and protothread architecture of Contiki. Use of the proposed modeling language is demonstrated with including the development of an IoT system for forest fire detection
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