Mechanical and thermal properties of non-crimp glass fiber reinforced clay/epoxy nanocomposites were investigated. Clay/epoxy nanocomposite systems were prepared to use as the matrix material for composite laminates. X-ray diffraction results obtained from natural and modified clays indicated that intergallery spacing of the layered clay increases with surface treatment. Tensile tests indicated that clay loading has minor effect on the tensile properties. Flexural properties of laminates were improved by clay addition due to the improved interface between glass fibers and epoxy. Differential scanning calorimetry (DSC) results showed that the modified clay particles affected the glass transition temperatures (T g ) of the nanocomposites. Incorporation of surface treated clay particles increased the dynamic mechanical properties of nanocomposite laminates. It was found that the flame resistance of composites was improved significantly by clay addition into the epoxy matrix.

Bir bireyin ya da grubun kendi bölgesine özgü kültürel ögeleri ve farklı toplumlarda karşılaştığı yeni kültürel ögeleri, kendinde birleştirmesiyle kültürleşme ortaya çıkmaktadır. Bireyler kültürlerarası iletişim sürecinde, adaptasyon nedeniyle kültürleşme stresiyle karşı karşıya kalmaktadırlar. Bu sebeple kültürleşme stresini irdelemeye yönelik yapılan çalışmalar akademik ve toplumsal açıdan önem arz etmektedir. Bu çalışma kapsamında da Daya S. Sandhu ve Badiolah R. Asrabadi (1994) tarafından geliştirilen kültürleşme stresi ölçeğinden yararlanılarak kültürlerarası iletişim sürecinde kültürleşme stresi Konya Selçuk Üniversitesinde okuyan Afrikalı öğrenciler üzerinden incelenmiştir. Çalışmada ayrıca belli değişkenler doğrultusunda kültürleşme stres düzeylerinin farklılaşıp farklılaşmadığı belirlenmiştir. Bu çalışmada araştırmacılar tarafından saha araştırması yöntemi kullanılmış ve 55 Afrikalı öğrencinin online anket aracılığı ile görüşleri öğrenilmiştir. Faktör analizi sonuçlarının değerlendirilmesinde Daya S. Sandhu ve Badiolah R. Asrabadi'nin (1994) (ASSIS) ölçeğindeki faktörler kullanılmış ve altı faktör saptanmıştır. Diğer taraftan katılımcıların kültürleşme stres düzeyleri ile çeşitli değişkenler arasında anlamlı bir farklılığa rastlanılmamıştır.

Exam anxiety, which is an element affecting the success of exams in school terms, is a situation that students face from the first years of their education. The students who are introduced to the exam in the first time when they start school, face the exam continuously during their life. Especially university students, who are going to start their business life, compete with their friends in a competitive environment in order to achieve their goals for the future and to be in a good position in their professions. As a matter of fact, the anxiety in the exams to reach the goals in this race affects the success. For this purpose, a field study was conducted on the students of Vocational School of Afyon Kocatepe University to determine the test anxiety and the relationship between various variables. The main problematic of the study is the level of exam anxiety of vocational high school students and how they differ according to socio-demographic characteristics.In order to collect data, a questionnaire consisting of 34 questions was used. The first 5 questions in the questionnaire aimed to reveal the sociodemographic characteristics of the participants. Exam anxiety is a negative situation experienced by students during the education process. This situation may affect students negatively. Many factors affect students' anxiety before the exam. These factors include; family attitudes and behaviors, working environment, financial conditions, friend relations, socialization, teacher-student relations and expectations. Therefore, in order to minimize exam anxiety, considering the above factors, besides families and trainers; It is recommended that students be made aware of these issues from an early age. As a result of the study, it was concluded that the students' test anxiety levels were high, while demographic factors did not show any difference on the test anxiety.