Effects of Sintering Temperature on Microstructural Properties of Ni1-xZnxFe2O4 Synthesized by Powder Metallurgy

Powder metallurgy (PM) is a modern manufacturing method that allows high-tech materials, alloys and complex shaped parts to be manufactured with precision and almost without the need for finishing operations such as deburring. PM involves powder production, powder processing, forming operations, pressing and sintering or pressure-assisted hot consolidation. This paper reports results on Ni1-xZnxFe2O4 produced by powder metallurgy at different sintering temperatures. Ni1-xZnxFe2O4 is an interesting functional magnetic material due to its special properties such as stability, very good dielectric properties, electrical resistivity, low dielectric loss, chemical stability, etc. all being important in cutting-edge technology. The use of Ni1-xZnxFe2O4 in diverse fields such as the biomedical field i.e. drug delivery is another vibrant research area. SEM imaging was performed for the structural analysis of the produced bulk sample. EDXRF analyses were performed for elemental composition along with SEM images.Trakya University [TUBAP-2011/149]In this study, the experimental data obtained during Mustafa ARAS's Master's Thesis (under the supervision of Prof. Muemin SAHIN), was used. The Master's Thesis was supported by Trakya University with the TUBAP-2011/149 project. The authors would like to thank to Istanbul Technical University, Gebze Technical University, Kocaeli University and Trakya University, Tuerkiye for their help in the experimental part of the study. The authors would also like to thank Prof Ali GENCER of Ankara University for his useful comments. With respect to Prof. Orhan KAMER of Istanbul Technical University

İnsan kaynakları bilgi sistemlerinin başarısında rol oynayan faktörler : bir araştırma

06.03.2018 tarihli ve 30352 sayılı Resmi Gazetede yayımlanan “Yükseköğretim Kanunu İle Bazı Kanun Ve Kanun Hükmünde Kararnamelerde Değişiklik Yapılması Hakkında Kanun” ile 18.06.2018 tarihli “Lisansüstü Tezlerin Elektronik Ortamda Toplanması, Düzenlenmesi ve Erişime Açılmasına İlişkin Yönerge” gereğince tam metin erişime açılmıştır.İnsan kaynakları yönetimi alanında son yıllarda bir dönüşüm yaşanmaktadır. Teknolojideki değişim bu dönüşümün parametrelerinden biridir. İnsan kaynakları disiplini bu değişime ayak uydurmuştur. İnsan kaynakları departmanında insan kaynakları bilgi sistemlerinin(İKBS) kullanımının yaygınlaşması bu değişime örnek olarak verilebilir.Bu çalışma insan kaynakları bilgi sistemlerinin başarısında etkili olan faktörleri tespit etmeyi amaçlamaktadır. Çalışma üç bölümden oluşmaktadır. İlk bölümde insan kaynakları yönetimi teknoloji ilişkisine değinilmiştir. İkinci bölümde insan kaynakları bilgi sistemlerine kavramsal açıdan değinilmiş, bu bağlamda İKBS yararları, kısıtları, İKBS kurulması ele alınmıştır. Üçüncü bölüm olan uygulama kısmında ise araştırma bulguları ve yorumlarına değinilmiştir.İnsan kaynakları bilgi sistemlerinin başarısında rol oynayan faktörleri belirlemek amacıyla Marmara bölgesinde çalışan 117 İKBS kullanıcısına standardize anket uygulanmıştır. Daha sonra anketler analiz edilmiş ve bulgular değerlendirilmiştir.Gerçekleştirilen çalışma sonucunda cinsiyet, eğitim ve işletme büyüklüğü değişkenleri ile kullanıcı bilgi tatmini arasında fark bulunamamıştır. Yazılım şirketi İKBS eğitimi, kurum içi İKBS eğitimi ve yönetim desteği ile kullanıcı bilgi tatmini arasında pozitif bir ilişki bulunmuştur. Son olarak kullanıcı belgelerinin varlığı ve kalitesi, kullanım kolaylığı ve sistemin yararlı olması değişkenleri ile kullanıcı bilgi tatmini arasında pozitif bir ilişki tespit edilmiştir.In recent years experienced a transformation in the field of human resource management. Technological change is one of the parameters of this transformation. Human resources discipline kept pace with these changes. Widespread use of human resources information systems (HRIS) in human resources department are examples of this change.In this study is aimed to identify the factors that affecting human resource information systems success. This study consists of three parts. In the first chapter, the relationship between human resource management and technology is discussed. In the second chapter, the conceptual side of human resources information systems is mentioned, in this context HRIS benefits, constraints, the establishment of HRIS is discussed. In the third chapter is related with the application that findings and comment are mentioned.To identify factors that play role in the success of human resource information systems, standardized questionnaire is administered by 117 HRIS users who work in the Marmara region. After that surveys are analyzed and findings are evaluated.As result of this study; there is no difference between the variables of gender, education, and business size and user information satisfaction. A positive relationship is found between software company HRIS training, in-house HRIS training, management support variables and user information satisfaction. Finally, a positive relationship is found between the existence and quality of user documentation, ease of use, usefulness and user information satisfaction

SSR-Based Molecular Identification and Population Structure Analysis for Forage Pea (Pisum sativum var. arvense L.) Landraces

Plant genetic diversity has a significant role in providing traits that can help meet future challenges, such as the need to adapt crops to changing climatic conditions or outbreaks of disease. Our aim in this study was to evaluate the diversity of 61 forage pea specimens (P. sativum ssp. arvense L.) collected from the northeastern Anatolia region of Turkey using 28 simple sequence repeat (SSR) markers. These primers generated a total of 82 polymorphic bands. The number of observed alleles (Na) per primer varied from 2 to 4 with a mean of 2.89 alleles/locus. The mean value of expected heterozygosity (Exp-Het = 0.50) was higher than the mean value of observed heterozygosity (Obs-Het = 0.22). The mean of polymorphic information content (PIC) was 0.41 with a range of 0.03–0.70. The mean number of effective alleles (Ne) was found to be 2.15, Nei’s expected heterozygosity (H) 0.49, and Shannon’s information index (I) 0.81. Cluster analysis through the unweighted pair-group mean average (UPGMA) method revealed that 61 forage pea landraces were divided into three main clusters. Genetic dissimilarity between the genotypes, calculated with the use of NTSYS-pc software, varied between 0.10 (G30 and G34) and 0.66 (G1 and G32). Principal coordinate analysis (PCoA) revealed that three principal coordinates explained 51.54% of the total variation. Moreover, population structure analysis showed that all genotypes formed three sub-populations. Expected heterozygosity values varied between 0.2669 (the first sub-population) and 0.3223 (third sub-population), with an average value of 0.2924. Average population differentiation measurement (Fst) was identified as 0.2351 for the first sub-population, 0.3838 for the second sub-population, and 0.2506 for the third sub-population. In general, current results suggest that SSR markers could be constantly used to illuminate the genetic diversity of forage pea landraces and can potentially be incorporated into future studies that examine the diversity within a larger collection of forage pea genotypes from diverse regions

Reel Ekonomiye Katkıları Bakımından katılım Bankalarının Kullandırdığı Fonların Analizi

Participation banks have been operating as a third kind of banks as well as deposit banks and development/investment banks in Turkish Banking System since 1985. Participation banks are operating according to Islamic principles. Therefore, they do not use interest in collecting and utilizing funds processes instead use profit/loss sharing model in these processes. The amount of allocated funds by participation banks and the share of participation banks in allocated funds have increased in the banking sector especially since 2002. The profıt/loss method that is one of the methods on allocated funds by participation banks in the banking sector is the most important method contribution to the real economy. Nevertheless, the share of allocated funds on the basis of the profıt/loss method is very low in the total allocated funds. In this case shows that participation banks despite of passing 30 years after its founding could not provide yet the expected contribution to the real sector of Turkish economy

The Effect of the Macroeconomic Determinants on Sovereign Credit Rating of Turkey

The effects of the main macroeconomic determinants on the sovereign credit rating of Turkey assigned by Standard & Poor’s are analyzed in this paper. As the main macroeconomic determinants, inflation rate, economic growth rate, foreign direct investment, external debt, current account debt and savings are taken into account in this study. The data related to Turkey in this study covers between 1992-2016. In this study, the Granger causality test and the OLS regression model are used for that correlations of the variables. Outcomes of the analysis show that just two in six macroeconomic determinants are effective on the sovereign credit rating. According to the results of the study, external debt and inflation rate have a statistically significant relationship with the sovereign credit rating of Turkey. The outcomes show that external debt and the inflation rate have negative effects on the sovereign credit rating of the country. The coefficient of the external debt and the inflation is negative which means that if the inflation or external debt increases the rating decreases in appropriate with the theory. On the other hand, the effects of the other four macroeconomic variables are not significant. The results of the study indicate that some factors other than the primary macroeconomic determinants are effective on the sovereign credit ratings of Turkey. The results also unveil the door for the criticism that the decisions of the credit rating agencies are biased

SOSYAL HİZMETLERDE KARİYER YÖNETİMİ

Yaşlı, çocuk ve dezavantajlı kişilerin bakımı, kadına ve aileye yönelik uygulamalarla sosyal hizmet kurumları toplumsal açıdan önemli bir görevi yerine getirmektedir. Bu yüzden sosyal hizmetler istihdam açısından gelişmekte ve bir çalışma alanı olarak önemi artmaktadır. Bu çalışmada sosyal hizmetlerde kariyer uygulamalarına değinilmiştir. Sosyal hizmetlerde çalışma alanları geniş olmasına rağmen özel sektör kuruluşlarının aksine kamuda kariyer uygulamaları-terfi ve transferler yönetmelikler ile belirlenmiştir. Başarı ve yetkinliklerden ziyade kıdem kariyer uygulamalarında öne çıkmaktadır. Ayrıca sosyal hizmet uzmanlarının tükenmişlik ve cam tavan gibi kariyer sorunları ile karşılaştıkları görülmüştür

Constitutional Economics, Fiscal Policy Rules, and The Case of Turkey

Discretionary fiscal policies have arisen because of dominant Keynesian economic policies from 1930’s to 1970’s. Public expenditures intensively and excessively increased in order to ensure macroeconomic stability during this period. Many countries faced the emergence of macroeconomic problems such as affectively using public resources, budget deficit and inflation. As a result, Keynesian economic policies and the stagnation experienced in following high inflation years have faced economies with stagflation process in the 1970’s. However, Keynesian approach did not solve the problem. Therefore, new economic approaches developed for solving the problem. One of the new economic approaches was Constitutional Economic Theory. The theory includes economic policy rules including fiscal rules as well as monetary rules. Fiscal rules have been one of the main stabilization tools in obtaining budget and public finance balance. Many countries have implemented specific fiscal policy rules to struggle with economic instabilities, budget deficits and public financial imbalances. A specific form of fiscal policy rule has been started to implement in Turkey since 1999. Several fiscal policy rules have been adopted in Turkey’s public financial management system as part of the economic program which was conducted with the collaboration of IMF since 1999. These rules are called as implicit fiscal policy rules. These fiscal rules have become a draft legal text in 2010 as “Fiscal Rule Draft Law”. Although the fiscal rule was planned to start the application period as of 2011, it is delayed to fiscal year 2012 because of some economic reasons

Foreign Capital Investment and Economic Crises in Turkey

1970’s financial liberalization has been followed by the liberalization of commercial markets in the process of globalization. Liberalization of financial markets has caused the acceleration of capital flows and the increase of their volume. Capital that flows to developing countries suffering from saving gaps has positive effects on the economies when they entered into these countries and lead to destabilizations on their economies when they went out. The influences of capital flows, especially the ones of speculative capital, have been observed in the financial crises erupted in international level since the 1990s. By performing the financial liberalization, Turkey has tried to resolve the capital gap problem with the entrance of foreign capital since 1989. Unfortunately, by increasing its vulnerabilities, liberalization caused Turkish economy, which has macroeconomic weaknesses; to become open to destabilizing effects of capital flows and global financial crises. The aim of this study is to determine the effects of capital flows on Turkish Economy

The Effect of the Macroeconomic Determinants on Sovereign Credit Rating of Turkey

The effects of the main macroeconomic determinants on the sovereign credit rating of Turkey assigned by Standard & Poor’s are analyzed in this paper. As the main macroeconomic determinants, inflation rate, economic growth rate, foreign direct investment, external debt, current account debt and savings are taken into account in this study. The data related to Turkey in this study covers between 1992-2016. In this study, the Granger causality test and the OLS regression model are used for that correlations of the variables. Outcomes of the analysis show that just two in six macroeconomic determinants are effective on the sovereign credit rating. According to the results of the study, external debt and inflation rate have a statistically significant relationship with the sovereign credit rating of Turkey. The outcomes show that external debt and the inflation rate have negative effects on the sovereign credit rating of the country. The coefficient of the external debt and the inflation is negative which means that if the inflation or external debt increases the rating decreases in appropriate with the theory. On the other hand, the effects of the other four macroeconomic variables are not significant. The results of the study indicate that some factors other than the primary macroeconomic determinants are effective on the sovereign credit ratings of Turkey. The results also unveil the door for the criticism that the decisions of the credit rating agencies are biased