Comparative Study of the Length-Weight Relationships of Some Fish Species along the Turkish Coasts

This study presents 738 length-weight relationships for 242 species found in Turkish seas. All length-weight relationships presented were collected from a total of 33 studies. These studies were all performed in Turkish coastal waters between 1997 and 2013. For all studies, the median of a value was calculated as 0.014 and the median of b value was calculated as 3.016

Non-magnetic semiconductor spin transistor

We propose a spin transistor using only non-magnetic materials that exploits the characteristics of bulk inversion asymmetry (BIA) in (110) symmetric quantum wells. We show that extremely large spin splittings due to BIA are possible in (110) InAs/GaSb/AlSb heterostructures, which together with the enhanced spin decay times in (110) quantum wells demonstrates the potential for exploitation of BIA effects in semiconductor spintronics devices. Spin injection and detection is achieved using spin-dependent resonant interband tunneling and spin transistor action is realized through control of the electron spin lifetime in an InAs lateral transport channel using an applied electric field (Rashba effect). This device may also be used as a spin valve, or a magnetic field sensor. The electronic structure and spin relaxation times for the spin transistor proposed here are calculated using a nonperturbative 14-band k.p nanostructure model.Comment: Accepted for publication in Applied Physics Letter

YOUNG ADOLESCENT EFL LEARNERS’ PERSPECTIVES ON CRITICAL THINKING SKILLS

Critical Thinking Skills (CTs) are among the 21st century learning skills, and schools are expected to equip the students with these skills.  Turkey has been restructuring the educational system in order to improve the quality of education which enables students to acquire such learning skills as critical and creative thinking, problem solving, and collaboration. The present study based on the perspectives of Young Adolescent EFF learners presents findings on the students’ awareness of CTs, and whether or not they apply them to a given task, and if there is any conflict between knowledge and application of CTs. The findings showed that the students, despite their quiet well awareness, they did not effectively apply CTs. The problems they encountered were assumed to be resulted from lacking in metacognitive knowledge

Microwave-assisted synthesis, characterizations, antimicrobial activities, and DFT studies on some pyridine derived Schiff base

This study reports a joint experimental, theoretical and microbiological investigation on the (E)-N,N-dimethyl-4-((pyridine-2-ylmethylene)amino)aniline (5), (E)-N,N-dimethyl-4-((pyridine-4-ylmethylene)amino)aniline (6) and (E)-N,N-dimethyl-4-((pyridine-3-ylmethylene)amino)aniline (7). These compounds were synthesized with microwave method and their structures characterized by FT-IR, 1H-NMR, 13C-NMR, and elemental analysis tecniques. In the theoretical studies, torsional barriers analysis, ground state structure, Fourier Transform Infrared spectra (FT-IR), and Nuclear Magnetic Resonance spectra (NMR) of 5, 6, and, 7 were calculated by Density Functional Theory (DFT) computations. The conformers obtained from the torsional barrier scanning were optimized by B3LYP/6-31G(d,p) level. The harmonic vibrational frequencies, potential energy distribution (PED), infrared intensities, and NMR chemical shifts of the most stable conformers were determined using the B3LYP/6-311++G(d,p). Theoretically, predicted spectral data were compared with experimental results. Antimicrobial studies of the synthesized compounds were performed against various microbial strains. Antimicrobial activities of 5, 6, and, 7 were tested against selected bacteria and yeast through minimum inhibitory concentration (MIC) and diffusion method. Compound 7 was found to be the most active against bacteria and yeast, while compound 5 was found to be moderately active. Compounds 6 (against S. aureus and C. albicans) and, 7 were found to have a very high minimum inhibitory concentration, ranging between 1.95 and 7.81 g/mL (against P. aeruginosa and E. coli). Compounds (6 and 7) showed zone of inhibition values in the range of 10–20 mm against other bacteria except L. monocytogenes and S. thyphimurium. © 2022 Elsevier B.V

Opinions of inspectors about elemantary mathematics curriculum

2005-2006 öğretim yılından itibaren okullarda uygulanan matematik öğretim programının öğretmenlerin bakış açısınca incelendiği birçok çalışma mevcuttur. Bu çalışma ise yapılan diğer çalışmalardan farklı olarak matematik programının uygulanmasını denetleyen ilköğretim müfettişlerinin matematik programı hakkındaki görüşlerini programın farklı boyutları bakımından incelemeye yönelik olarak yapılmıştır. Araştırma, 2010 yılında Erzurum ilinde hizmet-içi eğitim etkinliklerine katılan 107 müfettişe anket tekniği kullanılarak tarama modelinde yapılmış betimsel bir araştırmadır. Bulgular, müfettişlerin matematik programına ilişkin genel olarak belirtilen maddelere kısmen/orta düzeyde katıldıklarını; müfettişlerin ilköğretimin genel amaçlarının çok önemli olduğunu vurgularken uygulamada amaçların yeterince gerçekleşmediğini düşündüklerini; öğrenme alanlarından en az sıkıntıyı ‘sayılar’, en çok da ‘ölçme’ alanlarında yaşadıklarını; programın öğretim sürecinde uygulanmasında sıkıntılar olduğunu; öğretmenlerin derslerinde genellikle düz anlatım yöntemine ve soru cevap tekniğine, klasik testlere bağlı kaldıklarını göstermektedir. Bulgular ayrıca müfettişlerin görüşlerine göre öğretmenlerin matematik programında etkinlik hazırlama, matematiği günlük hayatla ilişkilendirme, özel ve genel öğretim yöntem ve teknikleri, ölçme ve değerlendirme ve problem kurma ve çözme konularında hizmetiçi eğitime gereksinimleri olduğunu göstermektedir.There are many studies available on the mathematics curriculum commenced to be implemented in schools in 2005-2006 school year. Unlike the other studies, this study has been carried out to analyze the curriculum in terms of different dimensions of the curriculum through elementary school inspectors’ opinions, who supervise mathematics curriculum implementation, on mathematics curriculum. The study is a descriptive research carried out in survey model using questionnaire technique applied to 107 inspectors participating inservice training activities in Erzurum province in 2010. Findings indicate that inspectors agree at partial/middle level in items generally stated related with mathematics curriculum; and they think that goals haven’t been realized at a sufficient level during implementation while they are emphasizing that general goals of the elementary curriculum are very important, that students experience the least difficulty in “numbers” and the most difficulty in “measurement”, that there are problems in implementation of the curriculum during instruction and that teachers generally depend on narrative method, question-answer technique and classic tests in their lessons. Also, findings indicate that in view of the inspectors, teachers need in-service training on preparing activities in mathematics curriculum, relating mathematics to daily life, individual and overall teaching methods and techniques, measurement and evaluation, problem posing and solving

Examination Of Mobbing Behaviors Experıenced By The Personnel Working At Youth Services And Provincial Directorates Of Sports,

The purpose of this research is to examine mobbing behaviors experienced by the personnel working at Youth Services and Provincial Directorates of Sports according to their sex, age, marital status, occupational seniority and graduated school. The research is such made by using general scanning model. The personnel working at the district and provincial offices of Youth Services and General Directorate of Sports constitute the population of the research and 325 personnel working at Youth Services and Provincial Directorates of Sports selected randomly from the population in 25 provinces constitute the sample of the research. The data regarding mobbing actions experienced by the personnel was collected by using “Negative Acts Questionnaire” (NAQ). “Negative Acts Questionnaire” (NAQ) was developed by Einarsen and Raknes (1) and adapted to Turkish by Cemaloglu (2). Cronbach Alpha reliability coefficient of the subjected scale was re-calculated and determined to be 0,89. During the analysis of data frequency (f), percentage distribution (%), arithmetic average (x), -t and F tests were used and data were analyzed by means of SPSS 15,00 packaged software. Significance level was accepted as 0.5 in order to determine whether a difference exists between the variants applied in the questionnaire. As a result of our research it was determined that 44% of the personnel working in GHSİM (Youth Services and General Directorate of Sports) suffered mobbing behaviors. When the questionnaire results are analyzed it is seen that women exposed more mobbing behaviors comparing to men, those between 21-30 age group exposed more mobbing behaviors comparing to other age groups, those married exposed more mobbing behaviors comparing to single and divorced, those having 1-10 years of seniority exposed more mobbing behaviors comparing to those having other seniorities, those having bachelor’s degree and associate degree exposed to more mobbing behaviors comparing to other graduates. It was determined that there is a significant difference between mobbing experiencing levels according to sex, age, occupational seniority and graduated school of the GHSİM personnel and no significant difference according to marital status variant

Risultati audiologici e rate di attecchimento dell'innesto di cartilagine con pericondrio nella timpanoplastica: PACIT

La cartilagine rappresenta una delle opzioni più interessanti per il confezionamento dell'innesto nella timpanoplastica (TPL). Col presente studio presentiamo i nostri risultati audiologici e il rate di attecchimento nei casi di TPL trattati con innesto di cartilagine con pericondrio (PACIT). Sono stati analizzati, in termini di tipo di chirurgia effettuata, attecchimento dell'innesto e risultati audiologici, 194 orecchi di 191 pazienti (108 maschi, 83 donne). Sono state effettuate 127 (65,46%) TPL tipo I, 45 (23,20%) tipo II e 22 (11,34%) tipo III. Il gap medio fra via aerea e via ossea all'audiometria tonale preoperatoria è stato rispettivamente 33,74 ± 9,60, 52,58 ± 9,07, e 56,58 ± 10,27 dB HL; i valori nel postoperatorio sono stai invece 18,55 ± 9,25, 31,21 ± 4,36, and 44,84 ± 12,45 dB HL. Nel postoperatorio di è registrato un miglioramento della soglia (≥ 10dB) nel 76,81% degli orecchi valutati, con un recupero medio di 20 dB HL (range 10-40 dB). Tuttavia il 19,07% degli orecchi valutati non ha mostrato un miglioramento della soglia uditiva, e il 4,12% ha manifestato un peggioramento della soglia. L'innesto ha attecchito correttamente nel 91,24% dei casi con follow-up di almeno 13 mesi con una media di 68,64 mesi, mentre si è registrato un fallimento nel 8,76% dei casi. In considerazione dei livelli postoperatori della soglia uditiva e dell'elevato rate di attecchimenti registrato, il presente studio ha evidenziato l'efficacia a lungo termine dell'innesto di cartilagine con pericondrio

The Importance Of Schools’ Sport Promotion In Society,

This study aims to generalize of school sports in the society, and this indicates how it impresses to the achievement of sporty.The universe of the research constitues physical education teachers work at schools of Ministry of National Education. The sample of research constitutes is composed twenty-six female and one hundred-two male physical education teachers, who work in the center of Elazig. A questionnaire is applied as a data collection device, these rates and frequency values of the questionnaire data are considered, and these values put into tables. Consequently, physical education teachers participated in this research stated that; %85.1 (109 people) considers that school sports would be affective for spreading schools in society, %68 has economic problems in sportive facilities, %95.3 thinks that hours of physical education courses are not adequate, %83 considers that sports organizations among schools would be benefical for national sports

Spin relaxation in (110) and (001) InAs/GaSb superlattices

We report an enhancement of the electron spin relaxation time (T1) in a (110) InAs/GaSb superlattice by more than an order of magnitude (25 times) relative to the corresponding (001) structure. The spin dynamics were measured using polarization sensitive pump probe techniques and a mid-infrared, subpicosecond PPLN OPO. Longer T1 times in (110) superlattices are attributed to the suppression of the native interface asymmetry and bulk inversion asymmetry contributions to the precessional D'yakonov Perel spin relaxation process. Calculations using a nonperturbative 14-band nanostructure model give good agreement with experiment and indicate that possible structural inversion asymmetry contributions to T1 associated with compositional mixing at the superlattice interfaces may limit the observed spin lifetime in (110) superlattices. Our findings have implications for potential spintronics applications using InAs/GaSb heterostructures.Comment: 4 pages, 2 figure

Hannah Arendt

Peer reviewe