Organizational Commitment, Human Resources, Continuance Commitment, Affective Commitment, Normative Commitment, Banking Sector

The concept of organizational commitment is defined as employees's strong belief in accepting organizational goals and values; a strong desire to spend high-level effort taking into account the benefit of the organization and to maintain membership in the organization. Although there are different classifications related to organizational commitment in the literature, affective commitment, continuance commitment and normative commitment sub-dimensions were emphasized. This study includes the implementation of an organizational commitment questionnaire developed by Allen and Meyer (1990) and adapted to Turkish by Wasti (2000) on a total of 53 employees in a participation bank operating in the East Black Sea Region. As a result of the study, no statistically significant relationship was found between the organizational commitment levels of the bank employees and the variables of age, marital status, gender, lenght of work, job title, income level. When the organizational score means of the employees were evaluated, it was seen that the average scores of affective commitment were higher than continuance and normative commitment

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Taha Toros Arşivi, Dosya No: 40-Ahmet Hamdi Tanpınarİstanbul Kalkınma Ajansı (TR10/14/YEN/0033) İstanbul Development Agency (TR10/14/YEN/0033

Clinical outcomes of multiple aneurysms microsurgical clipping: Evaluation of 90 patients

Background The incidence of multiple intracranial aneurysms (MIAs) among patients who are diagnosed with aneurysm is 15–45% in the literature. Treatment options depend on the patient's status, age, aneurysm location and neurosurgeon's experience. In this study outcomes of micro-surgically clipped 90 patients have been evaluated. Materials and methods Medical records of 90 (49 women and 41 men) patients of MIAs who underwent surgery by the authors, during a 3-year period from 2011 to 2013 were retrospectively reviewed of prospectively collected patients’ data. Surgically treated patients underwent a lateral supraorbital craniotomy followed by microsurgical clipping of all reachable aneurysms. Results The mean age of the sample is 50.8±11.9 (25–82) years. There were 67 patients presented with SAH. The most common complaint was severe headache of sudden onset (94%) in SAH group and migraine type headache (60.8%) in incidentally diagnosed group. According to location of the arteries; ACoA (50), MCA (R:49,L:45), ICA (R:34,L:15), PCoA (R:9,L:4), ACA (R:6,L:4), basilar artery (3) and SCA (2). Mortality rate was 13.3% (n=12), morbidity rate (new deficit was developed) was 18.8% (n=17) [7 out of them were partially/completely dependent on others for daily living activities before surgery (i.e. GOS<3)] and 67.8% (n=61) of the patients returned to their normal jobs and daily activities. Conclusions Multiple cerebral aneurysms are not associated with a less favorable outcome than are single aneurysm cases. Authors prefer microsurgical clipping of all the aneurysms, be it on the reverse side, if the aneurysm location is reachable and that includes bilaterally presenting MIAs

Analysis of Pre-Service Science Teachers’ Heuristic Reasoning Processes about Hydrogen Bonding

The purpose of this research was to determine the heuristics used by pre-service science teachers in understanding the details of hydrogen bonding.  The reasoning processes demonstrated were evaluated based on ten heuristic models suggested by Talanquer (2014). Phenomenographic assessment of the 30 participants indicated that all ten heuristics were utilized to make interpretations about hydrogen bonding. It was found that most students used short-cut strategies rather than efficient analytical reasoning processes. A total of 12 answer patterns were determined based on the answers of the participants. The percentage of students who gave the correct answer was low. The frequency sequencing of participants' heuristics demonstrated in this study was fluency, associative activation, recognition, one-reason decision making, attribute substitution, overconfidence, surface similarity, generalization, rigidity, and affect

Analysis of pre-service science teachers’ level of associating their chemistry knowledge with daily life and the relationship between these levels and their attitudes towards teaching science

The aim of this study is to determine science teacher candidates’ (PSTs) levels of associating their chemistry knowledge with daily life and to examine the relationship between these levels and their attitudes towards teaching science. The study is a descriptive study conducted through the survey method. This study was carried out with 30 PSTs in the part of science teacher education at the College of Education in their final semester. As the data collection tools, an open-ended questionnaire, which was developed by Kıyıcı and Aydoğdu (2011), was applied to determine the PSTs’ levels of associating their chemical knowledge with daily life. Also, the “Science Teaching Attitude Scale” developed by Thompson and Shringley (1986) and adapted into Turkish by Özkan, Tekkaya and Çakıroğlu (2002) was used to determine PSTs’ attitudes towards teaching science. The data obtained from the open-ended questionnaire analyzed based on the three categories that were used by Vazquez-Alanso and Manassero-Mas (1999). Findings obtained from the data showed that PSTs’ level of associating their chemistry knowledge with daily life was low. Results of the statistical analyses showed that there was a significant relations between level of associating their chemistry knowledge with daily and their attitudes towards teaching science

Perceptions of Science Teachers on Implementation of Seven Principles for Good Practice in Education by Chickering and Gamson in Courses

The present study aimed to determine the perceptions of science teachers on the implementation of the seven principles for good practice in education by Chickering and Gamson in their courses. Seven principles for good science education were used as a data collection tool in the survey. “The seven principles for good practice in science education scale" for teachers was used as the data collection instrument in the study. “The seven principles for good practice in science education scale" is the adapted form of the “Seven Principles for Good Practice in Education: Faculty Inventory” developed by Chickering and Gamson into Turkish language and junior high school science courses. The scale was applied to 285 science teachers employed in Elazığ province in Turkey and interviews were conducted with 45 teachers. Analysis of the study data demonstrated that the surveyed teachers implemented each of these seven principles at different levels. Conducted interviews revealed the examples of different strategies adopted by the teachers in implementing the abovementioned seven principles

Nanoakışkanlar ve güneş enerjili sıcak su sistemlerinde kullanımı

Güneş Enerjisi Sistemleri Sempozyumu ve Sergisi (8. : 2019 : Mersin, Türkiye)Nanoakışkanlar en genel tanımıyla; nanometrik boyuttaki (1-100 nm) katı partiküllerin bir temel akışkan içerisinde dağıtılması ile oluşturulan akışkanlardır. Böyle bir yapı oluşturmaktaki amaç, ısıl iletkenliği temel akışkanın ısıl iletkenliğinden daha yüksek olan bir nanomalzemeyi (metal, metal oksit veya yüksek yüzey alanlı karbonik yapılar) akışkan içerisine karıştırarak, akışkanın ısıl iletkenliğini arttırmaktır. Günümüzde bu akışkanın birçok ısıl uygulama alanı bilimsel olarak çalışılmaktadır. Bu çalışmada nanoakışkan sentezi ve nanoakışkanların hazırlama yöntemleri, nanoakışkanların termofiziksel özellikleri ve nanoakışkan uygulama alanları ve özellikle de güneş enerjili sistemleride kullanımı üzerine literatür araştırması yapılmış olup, bu akışkanların gerek güneş enerjili sistemler gerekse diğer ısıl sistemlerde ticari olarak kullanılabilmesi için araştırılması gereken konular ve aşılması gereken problemler tespit edilmeye çalışılmıştır.Nanofluids are the fluids formed by dispersing the solid particles of nanometric size (1-100nm) in a base fluid. The purpose of forming such a structure is to increase the thermal conductivity of the fluid by mixing a nanomaterial (metal, metal oxide or high surface area carbonic structures) into the fluid whose thermal conductivity is higher than the thermal conductivity of the base fluid. Today, many applications of this fluid are scientifically studied. In this study, nano-fluid synthesis and preparation methods of nano-fluids, thermophysical properties of nano-fluids and application areas of nano-fluids and especially the use of solar energy systems have been investigated in the literature. In order to use these fluids commercially in both solar energy systems and other thermal systems, the issues that need to be investigated and the problems to be overcome have been tried to be determined.No sponso

Integrated Taguchi-simulated annealing (SA) approach for analyzing wear behaviour of silicon nitride

In this study, the integrated Taguchi-simulated annealing (SA) approach is applied to examine the wear behaviour of silicon nitride (Si3 N4)-hexagonal boron nitride (hBN). Wear tests for Si3N4 -hBN composite versus steel (ASTM 316L) disc were carried out for a dry sliding conditions in a so-called pin-on-disc arrangement. The tests were realized at % volume of hBN 0, 4, 8, 12, 16 in Si3 N4 under the loads of 5, 10, 15, 20, 25 N. The wear rate (WR) was analyzed using Taguchi –signal to noise ratio approach with the aim of finding optimal combination of load and % volume of hBN in Si3N4 . By applying the analysis of variance, it was also found that the greatest impact on wear rate has interaction of load and % volume of hBN with percentage effect of 51.89%, then % volume of hBN with 35.04% and load with 13.06%. The experimental results are further utelized to develop the second-order, linear mathematical model. Further, this model is processed with simulated annealing (SA) to find the optimal combination of load and % volume of hBN to minimize wear rate. Combined Taguchi-SA approach was successfully used to predict the optimal combination of load and % volume of hBN in Si3 N4 to minimize wear rate of Si3 N4 . The dominant wear mechanism is adhesive wear as confirmed by scanning electron microscopy with energy dispersive spectroscopy (SEM-EDS)