THE EFFECT OF DROPOUT PREVENTION PROGRAM OF 9th GRADE RETENTIONS STUDENTS ON DROPOUT RISK, SELF-EFFICACY BELIEF AND LEARNING MOTIVATION STRATEGIES

High school dropout is a common problem in many countries and governments are trying to solve this problem for years. School counsellors can play an important role in dropout prevention by implementing school-based interventions. The aim of this study is to examine the effect of the Social-Cognitive Learning theory-based dropout prevention program which is applied to 9th grade retention students of the Anatolian and vocational high school students who were at risk for dropout. The dropout prevention program was aimed at reducing dropout risk, enhancing self-efficacy belief, and learning motivation strategies of students. The program was implemented in 11 sessions for the experimental students. For the data analysis, ‘ANOVA’ for the repeated measures and ‘Bonferroni test were used to evaluate the effect of the program on students. The result of the study showed that the dropout prevention program is effective in reducing participants’ dropout risk, enhancing learning motivation strategies, and moderating self-efficacy beliefs. In conclusion, it can be said that Social-Cognitive Learning theory-based psychoeducation program is effective to reduce the dropout risk at high schools.  Article visualizations

Age, Growth and Otolith Biometry-Body Length Relationships of Red Bandfish (Cepola Macrophthalma L., 1758) in the Sea of Marmara, Turkey

DergiPark: 714201trkjnatThe age, growth, and the otolith biometry-total length relationships of Cepola macrophthalma (Linnaeus, 1758) were investigated. The individuals were caught with beam trawl in the Sea of Marmara from March 2012 to June 2014. The individual with 51.5 cm total length sampled in this study was recorded as the new maximum size of C. macrophthalma in the Marmara Sea. The length-weight relationship showed negative allometric growth with a 1.36 b value. Otolith length-otolith weight, otolith width-otolith weight, otolith length-total length, otolith width-total length, otolith length-otolith width and total length-otolith weight relationships were found as OW=0.0002*OL2.6377 (R2=0.91), OW=0.001*OWi2.6215 (R2=0.94), O=0.057*TL+3.2087 (R2=0.57), OWi=0.0316*TL+1.8511 (R2=0.55), OWi=0.527*OL+0.2015 (R2=0.86), OW=0.0004*TL+0.0029 (R2=0.58), respectively. Ages were estimated from 80 otolith readings and the minimum and maximum ages observed were 1 and 5 years, respectively. The growth parameters of the von Bertalanffy equation were calculated as L?=61.95 cm, K=0.19 year-1, t0 = -0.05 years. A great majority of the stock (77%) consisted of younger individuals (1-2 age groups). Cepola macrophthalma stock consisted of mainly younger individuals which may indicate that an effective fishing pressure is effective on the stock. Cepola macrophthalma (Linnaeus, 1758)’in yaş, büyüme ve otolit biyometri-total boy ilişkileri araştırılmıştır. Bireyler Mart 2012-Haziran 2014 tarihleri arasında Marmara Denizi'nde algarna ile yakalanmıştır. Bu çalışmada örneklenen 51,5 cm'lik C. macrophthalma bireyinin boyu, Marmara Denizi'nde bu tür için maksimum olarak kaydedilmiştir. Boy-ağırlık ilişkisi denklemine göre büyüme tipi negatif allometrik olarak belirlenmiştir (b=1,36). Otolith boyu-otolith ağırlığı, otolith genişliği- otolith ağırlığı, otolith boyu-total boy, otolith genişliği-total boy, otolit boyu-otolit genişliği, total boy-otolit ağırlığı ilişkileri OW=0,0002*OL2,6377 (R2=0,91), OW=0,001*OWi2,6215 (R2=0,94), OL=0,057*TL+3,2087 (R2=0,57), OWi=0,0316*TL+1,8511 (R2=0,55), OWi=0,527*OL+0,2015 (R2=0,86) OW=0,0004*TL+0,0029 (R2=0,58) olarak hesaplanmıştır. Yaşlar 80 adet otolit okumasından hesaplanmıştır; gözlemlenen en küçük ve en büyük yaşlar sırasıyla 1 ve 5’tir. von Bertalanffy denklemine göre hesaplanan büyüme parametreleri değerleri L?=61,95 cm, K=0,19 yıl-1, t0 = -0,05 yıl olarak belirlenmiştir. Stoğun büyük çoğunluğu (%77) genç bireylerden (1-2 yaş grubu) oluşmaktadır. Marmara Denizi’nde C. macrophthalma stoğunun daha çok genç bireylerden oluşması stokların av baskısı altında olduğunu düşündürmektedir.

The history-making Bosporus Bridge

Taha Toros Arşivi, Dosya No: 115-Otellerİstanbul Kalkınma Ajansı (TR10/14/YEN/0033) İstanbul Development Agency (TR10/14/YEN/0033

Karadeniz' in Türkiye kıyılarındaki mezgitin (Merlangius merlangus euxinus) populasyon dinamiği parametreleri üzerine bir ön çalışma

Karadeniz'in Türkiye kıyılarında yayılış gösteren mezgitin (Merlangius merlangus euxinus) yaş-boy verileri kullanılarak bazı populasyon parametreleri tespit edilmiştir. Boyca ortalama yıllık büyüme oranı 3.7 cm olarak bulunmuştur. Maksimum yaş dişiler için IX, erkekler için VI olarak tespit edilmiştir. Mevsimsel salınımlı von Bertalanffy boyca büyüme parametreleri; L„=39.1 cm, K = 0.15, to = -1.05, C=0.23, tj=0.48 olarak saptanmıştır. Erkek ve dişilerin büyüme oranları arasında farklılık olduğu; dişilerin erkeklerden daha hızlı büyüdükleri ve daha büyük maksimum boya ulaştıkları saptanmıştır. Toplam ölüm ve bileşenleri; Z=1.63, M = 0.39 ve F = 1.24 olarak belirlenmiştir. Trolle avlanabilecek en yüksek biyokütle değerinin, Doğu Karadeniz'de trol avcılığına kapalı bölge olan Çaltı Burnu-Sarp arasındaki alanda olduğu bulunmuştur. Trol avlarında en bol bulunan türün mezgit olduğu belirlenmiştir.Some population parameters of the whiting (Merlangius merlangus euxinus) distributed along the Turkish Black Sea coast, were determined by using age-length data. The mean annual growth rate in length was found to be 3.7 cm. The maximum age group was determined as IX for females and VI for males. The seasonalized von Bertalanffy growth parameters in length were estimated to be $L_\infty$=39.1 cm, K = 0.15 $year^-1$, to = -1.53 year, C=0.23, $t_s$=0.48. There was a difference in growth rate between male and female fish. The females grow faster than males and reach a greater maximum length. Total mortality and its components were Z=1.63, M = 0.39 and F = 1.24. The highest trawlable biomass was found in the region between Çaltı Cape and Sarp which is an area closed to trawl fishing in the eastern Black Sea. In the trawl catches, the whiting was the dominant fish

Karadeniz'in Türkiye kıyılarında bir ayrışım fonksiyonu kullanarak Mezgit Merlangius merlangus euxinus stoklarının morfometrik ve meristik ayırımı

Stock differentiation studies of whiting, Merlangius merlangus euxinus, from the Turkish Black Sea coast were carried out using morphometric and meristic characters and applying the generalised distance of Mahalanobis. Fifteen morphometric measurements, together with eleven meristic characters, were used in the analyses. Insufficient differences (P>0.01) in general phenotypic and genotypic characteristics implied the existence of a single unit stock. Samples taken in different periods showed lower similarity than those taken in the same periods.Stock differentiation studies of whiting, Merlangius merlangus euxinus, from the Turkish Black Sea coast were carried out using morphometric and meristic characters and applying the generalised distance of Mahalanobis. Fifteen morphometric measurements, together with eleven meristic characters, were used in the analyses. Insufficient differences (P>0.01) in general phenotypic and genotypic characteristics implied the existence of a single unit stock. Samples taken in different periods showed lower similarity than those taken in the same periods

The Biology and population parameters of the whiting (Merlangius merlangus euxinus Nordmann) in the Turkish Coast of the Black Sea

Ph.D. - Doctoral Progra