Development of Analytical Thinking Tendency Scale: Validity and Reliability Study

This study aims to develop a analytical thinking tendency scale for university students. In this direction, a draft scale, consisting of 50 items, was applied to 574 university students. The obtained data were subjected to reliability tests, explanatory and confirmatory factor analysis (EFA-CFA). The factor analysis showed that the scale is composed of 2 factors. The percentage of variance explained by the factors was calculated as 43%. The fit indexes of the model obtained via CFA showed that the fit indexes of the two-factor structure are sufficient. Considering the reliability coefficients and AVE values calculated within the scope of the research, it can be said that the measurement results are reliable, and the divergent validity of the measurement results is provided. As a result of analyzes, a 5-score Likert type analytical thinking tendency scale consisting of 19-items was developed. According to the findings, it is determined that the analytical thinking tendency scale is a valid and a reliable assessment tool

Türkiye İstanbul İlinde Yetiştirilen İtalyan Orijinli Manda Sürülerinde Farklı Modeller ile Laktasyon Eğrilerinin Karşılaştırılması

This study was aimed to investigate biometry of lactation curve for Italian origined water buffalo in Istanbul province of Turkey. Total 72 heads Italian origined water buffalo were used at first lactation and three calving seasons as animal material. Wood, Wilmink and Cobby and Le Du models were chosen in this study. The general average lactation length, total lactation milk yield average and average daily milk yield were found 234 days, 1607.4 kg and 6.86 kg, respectively. Determination coefficient was calculated for Wood, Wilmink and Cobby and Le Du models for summer calving season as 0.94, 0.92 and 0.93, respectively. Wood model was found the highest coefficient of determination in general. Moreover, persistency (S) and maximum milk yields (Ymax) for Wood model were calculated. These values were found as 5.89 and 9.76 for first lactation in general group, respectively. Finally, this study is showed that the Wood model has the best fitted model among all models for all groups for first lactation for Italian origined water buffalo,Bu çalışmada Türkiye’de İstanbul ilinde yetiştirilen İtalyan orijinli mandalarda laktasyon eğrilerinin biyometrisi araştırılması amaçlanmıştır. Hayvan materyali olarak üç malaklama mevsiminde ve ilk laktasyonda olan 72 baş İtalyan orijinli manda kullanılmıştır. Sunulan çalışmada Wood, Wilmink ve Cobby ve Le Du modelleri seçilmiştir. Genel ortalama laktasyon süresi, toplam süt verim ortalaması ve günlük ortalama süt verimi sırasıyla 234 gün, 1607,4 kg ve 6.86 kg olarak bulunmuştur. Yazın malaklayan hayvanlarda Wood, Wilmink ve Cobby ve Le Du modelleri için belirleme katsayıları sırasıyla 0.94, 0.92 ve 0.93 olarak bulunmuştur. Genel olarak Wood modeli en yüksek belirleme katsayısına sahip olmuştur. Bunun yanında, Wood modeli için persistens (S), maksimum süt verimi (Ymax) değerleri hesaplanmıştır. Bu değerler ilk laktasyon için sırasıyla 5.89 ve 9.76 olarak bulunmuştur. Sonuç olarak çalışma göstermiştir ki ilk laktasyondaki İtalyan orijinli mandalarda tüm gruplar için diğer modeler içinde en iyi uyum Wood modelinde görülmüştür

Examining the Two Categorical Datas by Jmetrik, Bilog-Mg and Irtpro with Application of Mathematics Exam

The aim of this study was to examination of two-category rated mathematics course final exam based on Item Response Theory data analyzed with the help of 2-Parameter Logistic Model and determination of the ability and standard errors with the help of different programs. This study involves a comparative interpretation of some descriptive statistics and analysis. Therefore, research has characterized as relational model which is one of the general survey models. For this purpose, 771 students’ final achievement test responses to a 20-point final exam, were analyzed by BILOG, IRT PRO and JMETRİK programs. Item Response Theory assumptions were analyzed with SPSS and Factor 9.3 programs. Working as a result of the analysis of data all of the IRT assumptions are met and the most appropriate model of data set has been concluded that the twoparameter logistic model. The study also found that there is a statistically significant relationship between the estimated parameters related to individual ability and error at the level of .01. Especially compared to the others there is also significant relationship between JMETRİK and IRT PRO. Different models and methods of research proposals have been made in terms of response patterns to be analyzed a gain for the same data set

Investigation on Reducing Chromium Quantity in Chromium Containing Wastes of Leather Industry Using Oyster Mushroom (Pleurotus ostreatus)

Content: In the leather industry, the shaved wastes after the wet blue phase, which are exposed by the shaving process, are one of the substances that cause environmental pollution for the leather industry. Most of the time, these wastes can be buried and may cause serious environmental pollution. In this study, wet blue shaved wastes to be mineralized to chromium and so prevented oxidise to Cr (VI) by using oyster mushrooms (Pleurotus ostreatus) .Wet blue shaved wastes were mixed with 0.5%, 1%, 1.5% and 2% doses into the growth medium. After the oyster mushroom growth, the consuming of chromium from the growth media and chromium content that uptaken by the mushroom were investigated with in House method / ICP-MS. Take-Away: -Oyster mushroom degrade the waste -Oyster mushroom can uptake chromium -Oyster mushroom can grow medium where contens chromiu

Genetic Animal Heritage of Anatolia: Short-beaked Pigeon Genotypes

This study aimed to determine the morphological and morphometric characteristics of Bango, Mısıri and Baska pigeons, which have been preferred to breed as ornamental and diver pigeons in Anatolia. The ages of the pigeons were classified into four groups: 12-24 months of age (age group I), 25-36 months of age (age group II), 37-48 months of age (age group III), and 48 months of age and over (age group IV). These three pigeon genotypes were included in the bird group with short beak and small body structure. There were statistically significant differences among the genotypes in terms of body weight, head length-width, beak length-depth, chest depth-width, thoracic perimeter, tail and body length, wing span-length, tarsus diameter (p?0.01). Considering the body plumage color of pigeons, Mısıri and Bango pigeons show more similar appearance, however Baska pigeons has a different appearance from both genotypes. However, it is thought that it would be appropriate to evaluate morphological data together with genetic analysis. We think that these three pigeon genotypes should be taken under immediate protection in order to protect the domestic gene resources of Turkey.

Evaluation of the yield of strawberry genotypes by morpho-physiological parameters under deficit irrigation in the Mediterranean environment

The most pressing concern of the century is food security, mostly supported by irrigated agriculture. In this respect, studies on water stress have drawn increased attention with a highlighting expectation foreseen via our breeding efforts documented in this study concerning the significant commercial strawberry cultivars ‘Rubygem’, ‘Sabrina’ and ‘Festival’ along with some selected superior bred lines (‘33’, ‘36’, ‘59’, ‘61’ and ‘112’). Plants cultivated in the Spanish-type high tunnel were exposed to both full (IR100) and deficit irrigation (IR50) in the Mediterranean part of Türkiye. Fruit yield as well as certain critical morphological and physiological parameters were examined throughout the active harvest period. This study found that the parameters relating to the vegetative components, as well as the fruit weight and yield, drastically dropped when plants were subjected to deficit irrigation. Therefore, depending on the limited irrigation, as a result of the closure of stomata, it was concluded that the amount of water and stomatal conductance of the plant is associated with a decrease. IR50 was found to have less impact on low-yield genotypes than on high-yield genotypes. Photosynthetic activity and stomatal conductivity were high in the ‘33’ bred line with a high yield. On the other hand, photosynthesis activity and leaf water potential (LWP) values were relatively low in the ‘36’ bred line with low yield. The study proved that variables like photosynthetic activity, stomatal conductance, and LWP could be used as markers for high yield genotype selection

Educational Data Mining: The Analysis of the Factors Affecting Science Instruction by Clustering Analysis

Science literacy, which is included in Programme for International Student Assessment (PISA) as an assessment area, is an important research and discussion area of science education literature with all its dimensions. In this study, the clustering results of the students from 34 Organization for Economic Cooperation and Development (OECD) countries participating in the PISA 2015 test and sampled by systematic sampling method are obtained by K-Means Clustering and Two-Step Cluster Analysis using the factor scores and PISA science literacy average scores. It is thought that the study is of great importance in terms of dividing individuals into clusters according to science instruction methods and the mean of plausible values and having an idea about how each cluster is defined. As a result of the K-means cluster analysis, it was determined that the input variable with the highest level of importance in the formation of the first and third clusters in which the students with the highest scores were included was teacher-directed science instruction, and after this variable, the input variable with the highest level of importance was the perceived feedback from science teachers. Within the scope of the Two-Step Clustering Analysis, it was determined that teacher-directed science instruction has the most importance in terms of the decomposition of clusters, followed by adaptive instruction in science lessons in terms of importance level

Kinetic model of photosensitized homolysis of erythrocytes: multihit target theory

Fotosensitize edilmis eritrositlerdeki hemoliz hız kinetigini örnek sistem olarak kullanarak, hücre zarındaki fotosensitizasyon mekanizmasının açıklanması amaçlanmıstır. Fotohemolizin ısıga baglı olusan hasar (fotokimyasal safha) ve termal aktivasyonun (termal safha) birlikte olan etkisiyle olustugunu kabul eden “Çok Vuruslu HedefTeori” 'de; her safhadaki kinetik düzen özel vuru sayıları ile belirlenebilmektedir. Fotohemoliz hızı formülüyle hesaplanmıs olup, sistemde %50 hemoliz olması için gerekli olan karanlık inkübasyon zamanını, uygulanan ısık dozunu, protoporfirin konsantrasyonu , reaksiyon sabitini, ve ise ölçülen üssel degerleri belirtmektedir. Deneyde, pH 7.4, 10 mM tuzlu fosfat tamponda hazırlanan insan eritrositleri degisik konsantrasyonlarda protoporfirin IX ile fotosensitif hale getirilmis ve ısıga maruz bırakılarak gecikmis fotohemoliz ölçümleri yapılmıstır. Ayrıca gecikmis fotohemoliz verileri “ÇokVuruslu HedefTeori” kullanılarak incelenmistir. Fotohemoliz egrileri s-seklinde olup, düsük protoporfirin konsantrasyonu ve ısınlama zamanında t degeri daha uzamıs olarak ölçülmüstür. Gecikmis fotohemoliz ölçümlerinde, fotohemoliz hızının sogurulan ısınımın karesiyle orantılı oldugu belirlenmistir. Deneysel ve modelle hesaplanan fotohemoliz egrileri uyum içindedir. “Çok Vuruslu Hedef Teori” ile, fotohemoliz sonuçlarının karakterize edilmesi ve karsılastırması açısından önemli oldugu gösterilmistir. Bu kinetik modelle belirlenen degisik konsantrasyonda fotosensitif ajan ve ısık dozunun fotohemoliz egrileri üzerine olan etkisinin, ölçülen deneysel verilerle uyum içinde olması ile “ÇokVuruslu HedefTeori” desteklenmektedir.By using rate kinetics of photosensitized hemolysis of erythrocyte as a model system, understanding the mechanism of photosensitization on the cell membrane was purposed in this work. Photohemolysis required the combined effect of the light activated (photochemical stage) and thermal (thermal stage) process, and these stages can be represented by “MultihitTarget Theory”, defined with photochemical and thermal hit numbers. Photohemolysis rate was calculated by using where is the dark incubation time required for 50% hemolysis, L is the incident light dose, is the bound dye concentration, and are the “as measured” exponents, and g is the reaction constant. Erythrocyte suspension, which was prepared in pH 7.4 10 mM phosphate buffered saline, was photosensitized with various concentration of protoporphyrin IX and was irradiated by visible light. Then, delayed photohemolysis was measured for each sample, and data were analyzed using “MultihitTarget Theory”. Prolonged t values were measured on delayed photohemolysis curve (s-shaped) with low protoporphyrin IX concentration and irradiation time. Delayed photohemolysis measurements are indicative of second power dependence of the photohemolysis rate on the absorbed light energy. Photohemolysis data obtained from experiments and kinetic model calculations were in good agreement. “Multihit Target Theory” is important for characterizing and comparing photohemolysis results. The effects of various concentrations of photosensitizers and light doses on photohemolysis curve were analyzed with kinetic model. Thus, experimental data were in good agreement with recent kinetic model, based on “MultihitTarget Theory”