The aim of this study is to examine students' bullying toward teachers and classroom management skills in terms of various variables. The sample of the study consisted of 422 participant teachers. The 'Bullying toward Teachers Questionnaire' and 'Classroom Management Skills Scale' were used as data collection instruments. According to the results, it was determined that 57.2% of participant teachers have not been bullied whereas 42.8 % have been bullied by their students. The teachers who have been bullied by their students were mostly woman, had undergraduate degrees and more than 16 years of teaching experience. There was no significant difference of teachers' total scores and two sub-dimension scores of CMSS according to gender, school type, education level and years of experience variables. There were significant differences between bullied and non-bullied teachers' total scores and two sub-dimension scores obtained from CMSS. It is evident that non-bullied teachers' mean scores obtained from two sub-dimensions and total scores of CMSS were significantly higher than those of the bullied teachers.

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Supplier selection is considered among the most criterional decision-making problems as it aims to maximize conflicting targets. In order to meet the demands of customers, enterprises take environmental and social factors into account as well as economic factors. The main objective of the study is to evaluate supplier selection criteria within a sustainable supply chain and to determine which criteria have more weight. In the study, a conceptual framework has been developed by taking into account economic, environmental and social factors in order to evaluate the performance of a sustainable supply chain performance. In addition to these 3 main criteria, 9 sub-criteria are also included in the study. In this study, the DEMATEL method is applied to measure the sustainability performance of suppliers in the sustainable supply chain of a company operating in the natural wood coating sector. At the end of the practice, the weight rating of each criterion is calculated. It has been revealed that the economic, then social and environmental dimension is considered important in the sustainable supplier selection criteria for the company evaluated within the scope of the study and that the cost of supply is the most important performance criterion. The criteria are divided into affecting and affected by evaluating the level of importance relative to each other. It has been shown that the enterprise should focus on which performance criteria in the supplier selection.

Bu araştırma, takım oluşturma, takım performansı ve takım devamlılığı arasındaki ilişkileri incelemeyi amaçlamaktadır. Bu kapsamda takım performansının aracılık rolünün tespit edilmesi araştırmanın temel problemini oluşturmaktadır. Araştırmada ilişkisel tarama modeli tercih edilmiştir. Veriler, anket tekniği ile toplanmıştır. Toplamda 375 katılımcıdan elde edilen veriler üzerinden araştırma modeli test edilmiştir. Verilerin analizinde SPSS 21.0 ve LİSREL 8.72 programları kullanılmıştır. Analiz sonucunda takım oluşumu ve takım devamlılığı ile ilgili tek boyutlu, takım performansı ile ilgili iki boyutlu (sosyalleşme, dayanışma) bir yapıya ulaşılmıştır. Takım yapısı, takım performansı ve takım devamlılığı arasında yüksek düzeyde pozitif yönlü anlamlı ilişkiler tespit edilmiştir. Takım oluşturma ve devamlılık arasındaki ilişkide performans anlamlı düzeyde kısmi aracılık etkisine sahipken dayanışma performansının sosyalleşme performansına nispeten daha önemli bir kısmi aracılık rolüne sahip olduğu belirlenmiştir.