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Grouping OECD countries based on energy-related variables using k-means and fuzzy clustering
No full textThe main purpose of this study is to examine the relationships between energy consumption, CO2 emission and economic growth for 28 OECD countries and to form clusters based on the findings. The study is carried out under the 1990-2010 period, considering the annual data, the average annual values for each country are calculated and the countries are grouped by taking into account the main energy variables. This study examined OECD countries into three groups to form more specific clustering, rendering to test the hypotheses in current empirical studies, and examining the relationships of the interacted variables for within and inter-cluster countries
Improved artificial cooperative search algorithm for solving non- convex economic dispatch problems with valve-point effects
Full text linkThis paper presents Improved Artificial Cooperative Search (IACS) algorithm for solving economic dispatch problemsconsidering the valve point effects, ramp rate limits, transmission losses and prohibited operation zones. In order to improve the solutionquality and increase the search efficiency, a novel perturbation scheme called “Global best guided chaotic local search” is proposed andincorporated into ACS algorithm. The effectiveness of the proposed IACS algorithm has been benchmarked with twelve widely knownoptimization test problems. In order to assess the performance of the proposed algorithm on non-convex optimization problems, four casestudies related to highly nonlinear economic dispatch problems have been solved . Results retrieved from IACS algorithm have beencompared with literature approaches in terms of minimum, maximum and average generation cost values. Comparison results indicate thatIACS produces more economical power load than those of other optimizers available in the literature
Evaluation of Coulomb stress criteria in earthquake Interactions; East Anatolian fault line
Full text linkTürkiye’nin önemli fay zonlarından biri olan Doğu Anadolu Fay Zonu (DAFZ), içinde bulunduğumuz yüzyılda çok aktifgörünmemesine rağmen, tarihsel dönemlerde büyük depremler üretmiş bir fay zonudur. DAFZ’in yakın çevresinde büyük yerleşimbirimlerinin bulunması, dolayısıyla gelecekte meydana gelebilecek muhtemel bir depremin yerinin belirlenmesi önem arz etmektedir.Fayların içinde bulundukları gerilme durumları ve komşu faylara olan etkisi Coulomb gerilme kriteri ile modellenebilmekte, gerilmeninarttığı bölgeler tespit edilerek, gelecekte oluşabilecek bir deprem lokasyon olarak değerlendirilebilmektedir. Bu çalışmada DAFZuzerinde 1822 yılından günümüze kadar meydana gelmiş orta ve büyük ölçekli depremler Coulomb kriteri kullanılarak modellenmişve incelenen depremlerin birbirleri ile olan ilişkileri araştırılmıştır. Ayrıca, lehva hareketlerine bağlı meydana gelen tektonik gerilmedeğişimleri analiz edilerek, bölgede deprem riski oluşturabilecek gerilmenin yüksek olduğu alanlar incelenmiştir. Elde edilen bulgularagöre; modellenen 18 depremden 12 tanesi oluşumları itibariyle gerilme ilişkileri tespit edilmiş ve bir anlamda birbirlerini tetiklemişlerdir.Geçmiş yıllarda araştırmacılar tarafından gerilme artışı saptanan Elazığ-Bingöl arasındaki segmentin 2003 Bingöl ve 2010 Elazığdepremlerinden sonra kısmen deprem riski taşımadıgı da tespit edilmiştir. Inceleme alanında yer alan Kahramanmaraş-Malatya illeriarasında yer alan segmentte hem deprem tetiklemelerinden, hem de tektonik hareketlerden kaynaklı bir gerilme artışı tespit edilerek,deprem riskinin yüksek olduğu alan olarak çalışmada belirlenmiştir.East Anatolian Fault Zone (EAFZ), one of Turkey’s major fault zones, is quiescent in this century, was very active and produced major earthquakes in historical periods. In terms of large cities existence along the EAFZ, It is important to identify a possible location of the earthquake that may occur in the future. The stress state in the faults and their possible triggering effect to neighboring faults can be modelled by the Coulomb stress criterion. Hence, the future earthquake location can be determined by detecting the stress increased areas. In this study, moderate and large earthquakes that have been occurred since 1822 were modelled using the Coulomb criterion and their stress interactions were investigated. In addition, by analyzing the tectonic stress changes due to plate motions, the areas where the positive stress change is high, which may create earthquake risk in the region, were also investigated. According to the study findings; 12 of the 18 modelled earthquakes have a causal link between their occurence; it can be concluded that the earthquakes were triggered by their subsequent ones. Furthermore, the segment between Elazığ and Bingöl cities, where the stress increased area examined by the researchers in the previous years, was currently determined to be partially relaxed following the 2003 Bingöl ve 2010 Elazığ earthquakes. In conclusion, the segment between Kahramanmaraş and Malatya cities was determined to be a seismic hazard which poses a high earthquake risk due to both earthquake interactions and tectonic movements modelling
Which standards are more effective for healthcare external evaluation organizations management systems?: ISQua 4th Ed. vs ISO 9004:2009
Full text linkThe aim of this study; to find out which standard for institutional accreditation ismore appropriate for external evaluation organizations for healthcare institutions. Dataobtained from ISQua: Guidelines and Standards for External Evaluation Organizations4th Edition Version 1.2 and ISO: Managing for the sustained success of an organization– A quality management approach.In this study; two sets of standards that organizations can use as guide to increasetheir institutional quality were evaluated to find out which one is the best choice forExternal Evaluation Organizations for health care. Other quality systems and standardsets were not evaluated in this study.First, the ISO standard set was examined in detail, then it was sought whetherthere is a matching standard or requirement in the ISQua standard set with each standardfound in the ISO standard set.It was evaluated whether the sets had superiority orweakness against each other. ISQua: Guidelines and Standards for External EvaluationOrganizations were found as more suitable for external evaluation organizations forhealthcare institutions
Working with women in Turkey exposed to childhood sexual abuse
No full textObjective Sexual abuse of children is an important public health issue. The aim of this study was to provide a multidimensional examination of women over the age of 18 who were exposed to sexual abuse in childhood and the effect of this abuse on their lives. Design and Sample Measures This qualitative study was conducted over the period June 2015-February 2017. Twenty-three women were gathered by the snowball sampling method. We collected the data using a semi-structured questionnaire and in-depth interviews. Content analysis was used in the evaluation of the data. Results Conclusion We found five themes that participants considered to result from their sexual abuse: emotional effects, sexuality, marriage, academic, and social aspects. Sexual abuse adversely affected the physical, psychological, and social lives of individuals. Public health nurses play a role in working with women who were exposed to sexual abuse in childhood
Political and economic institutions and economic performance: Evidence from Kosovo
Full text linkThis study examines Kosovo's attempts to create efficient political and economic institutions while assuming that if these institutions cannot perform well and the market economy will also fail. Thus, the main aim of this paper is to understand the reasons behind institutional and economic failure. A qualitative research approach that we used is based on a longitudinal perspective and a set of secondary data which are analyzed by using Qualitative Content Analysis technique. Our findings suggest that the state-building period which was administrated by the international organizations created problems such as polarizations in views, duality and imbalance in power distribution and illegitimacy of the governing institutions. These problems are more or less reflected in other institutions in the following independence period. Moreover, due to continuing and deepening political fragmentation and tension amongst the local parties, attempts to create well-functioning and supporting institutions have not yet produced fruitful results. With such institutional performance Kosovo has not yet been able to create a functioning market economy and to overcome economic challenges