PROSPECTİVE TEACHERS’ OPINIONS ABOUT ANIMATIONS IN SCIENCE EDUCATION

The purpose of the current research is to determine prospective teachers’ opinions about animations. The current research employed case research design as a qualitative research method. The research group of the current research is comprised of 124 prospective primary teachers and 116 prospective science teachers. A structured form including 10 open-ended questions and a semi-structured interview form consisting of 8 questions were administered to the participants of the research. The findings of the research revealed that the opinions stated by the prospective teachers about the use of animations in science education could be gathered under the following themes: applications related to the objectives of the course, course energizers, individual differences, physical-technical capacity, student-teacher competencies, economic capacity, program capacity, learning gained with the help of others, type of music, behavioral-mental communication skills, empathy and science literacy. The data collected from the interviews showed that the prospective teachers see themselves as willing but incompetent in using animations, want to have training about the preparation of animation programs, want to use the animations they themselves develop but prefer to use the ones prepared by others and think that it is necessary to make use of animations in today’s educational environments. In light of the findings of the current research, experimental activities in the form of student seminars and courses can be suggested for prospective teachers to enhance their information, skills and competencies about animations.  Article visualizations

PRE-SERVICE BIOLOGY TEACHERS’ PERCEPTION OF THE CONCEPT OF ENVIRONMENT: A METAPHOR STUDY

The current study was conducted to reveal the pre-service biology teachers’ perceptions of environment through metaphors. A total of 71 pre-service teachers (1st year, 2nd year, 3rd year and 4th year students) participated in the current study in 2006-2017 academic year. The data of the study were obtained by asking the students to complete the sentence “environment is like… because…” five times. The collected data were analyzed according to grade level by using both qualitative and quantitative data analysis techniques. The findings of the study have revealed that the 1st year pre-service teachers produced a total of 53 valid metaphors, the second year pre-service teachers produced 39 valid metaphors, the third year pre-service teachers produced 39 valid metaphors and the fourth year pre-service teachers produced 49 valid metaphors about the concept of environment. These metaphors were analyzed in terms of their common features and by using the conceptual categories developed by Aydın (2011), they were gathered under 10 categories. The pre-service teachers’ metaphoric perceptions of the concept of environment were found to be categorically varying across the grade levels. As a result, it can be argued that metaphors can be used as effective measurement and evaluation tools in revealing pre-service biology teachers’ perceptions and mental images of the concept of environment.  Article visualizations

Povezanost volatilnosti među globalnim dionicama e-trgovine

This paper studies the volatility connectedness between the stock prices of e-commerce companies. For that matter, we implement the TVP-VAR-Based connectedness procedure to unearth the dynamic structure of volatilities. This approach helps us to determine the volatility spillover between assets that are risk receivers or risk transmitters. We utilize the daily log-return data of the largest e-commerce companies by market cap. The data set consists of the daily open, close, high, and low prices of stocks between 2019-01-02 and 2022-12-23. We obtain the volatility of stocks using the Garman-Klass range-based approach. The findings reveal that the average total connected index is relatively high by 65.45%, which means that the forecasting error variance in the variables is due to the transmission and connectedness between these variables. Furthermore, net pairwise directional connectedness results evidence that the most dominant stock is Amazon within the network. Ultimately, we find the strongest bilateral volatility interconnectedness to occur between the stocks of Alibaba and Jingdong Mall.Ovaj rad proučava povezanost volatilnosti između cijena dionica e-trgovinskih poduzeća. U tu svrhu implementira se TVP-VAR-Based postupak povezanosti kako bi se otkrila dinamička struktura volatilnosti. Ovaj pristup pomaže utvrditi prijenos volatilnosti između imovine koja prima ili prenosi rizik. Pritom se koriste logaritamski vrijednosti dnevnih povrata najvećih e-trgovinskih poduzeća prema tržišnoj kapitalizaciji. Skup podataka sastoji se od dnevnih cijena otvaranja, zatvaranja, najviših i najnižih cijena dionica u razdoblju od 2019-01-02 do 2022-12-23. Volatilnost dionica dobivena je koristeći Garman-Klass pristup temeljen na rasponu. Rezultati pokazuju da je prosječni ukupni indeks povezanosti relativno visok sa 65,45%, što znači da je varijanca prognostičke pogreške u varijablama rezultat prijenosa i povezanosti između tih varijabli. Nadalje, rezultati dvosmjerne povezanosti pokazuju da je Amazon najdominantnija dionica unutar mreže. Na kraju, otkrivamo da se najjača bilateralna povezanost volatilnosti javlja između dionica Alibabe i Jingdong Mall-a

On-line new event detection and tracking in a multi-resource environment

Cataloged from PDF version of article.As the amount of electronically available information resources increase, the need for information also increases. Today, it is almost impossible for a person to keep track all the information resources and find new events as soon as possible. In this thesis, we present an on-line new event detection and tracking system, which automatically detects new events from multiple news resources and immediately start tracking events as they evolve. Since we implemented the on-line version of event detection approach, the novelty decision about a news story is done before processing the next one. We also present a new threshold, called support threshold, used in detection process to decrease the number of new event alarms, that are caused by informative and one-time-only news. The support threshold can be used to tune the weights of news resources. We implemented the tracking phase as an unsupervised learning process, that is, detected events are automatically tracked by training the system using the first news story of an event. Since events evolve over time, an unsupervised adaptation is used to retrain the tracking system in order to increase the tracking system performance. Adaptation is achieved by adding predicted documents to the training process. From the corpus observations, we conclude that one news story can be associated to more than one event. For this reason, the tracking system can relate a news story to more than one event. The on-line new event detection and tracking system has been tested on the Reuters news feed, available on the Internet. The Reuters news feed, that we used, comprises four independent news resources. The news stories are in Turkish.Kurt, HakanM.S

The self-esteem of high school students and their attitudes towards physical education and sports lessons

Bu çalışmada, lise öğrencilerinin benlik saygıları ile beden eğitimi ve spor dersine ilişkin tutumları arasındaki ilişkinin incelenmesi amaçlanmıştır. Araştırma evrenini 2021-2022 eğitim öğretim yılındaki Doğu Karadeniz Bölgesi Fen Lisesi öğrencileri oluşturmaktayken; örneklemini bu okullarda öğrenim gören basit tesadüfi örnekleme yöntemi ile belirlenen 383 gönüllü öğrenci oluşturmaktadır. Araştırmada verilerin toplanması “Demografik Bilgi Formu”, “Coopersmith Benlik Saygısı Envanteri” ve “Ortaöğretim Öğrencileri İçin Beden Eğitimi Dersi Tutum Ölçeği” ile sağlanmıştır. Veri analizleri SPSS 26.0 lisanlı paket program kullanılarak değerlendirilmiştir. Analizlerde betimleyici istatistiklerin, One-Way ANOVA, Tukey HSD testi ve Pearson Korelasyon analizlerinden faydalanılmıştır. Araştırma bulgularında öğrencilerin, benlik saygısı puanlarının yaş, sınıf, gelir düzeyi ve lisanslı spor yapma durumu açısından anlamlı farklılıklar gösterdiği (p<0.05), beden eğitimi ve spor dersine ilişkin tutum puanlarında ise cinsiyet ve lisanslı spor yapma durumu değişkenleri açısından anlamlı farklılıklar gösterdiği (p<0.05) belirlenmiştir. Ayrıca benlik saygıları ile beden eğitimi ve spor (BES) dersine ilişkin tutum puanları arasında pozitif yönde anlamlı bir ilişkinin olduğu görülmüştür. Sonuç olarak, fen lisesi öğrencilerinin demografik özelliklerine göre benlik saygısı düzeyleri ile BES dersine ilişkin tutumlarında pozitif yönlü anlamlı ilişkiler olduğu, benlik saygısı kavramının, beden eğitimi ve spor dersine ilişkin olumlu tutum geliştirmede önemli bir yordayıcı olduğu sonucuna ulaşılmıştır

A retrospective observational study of the frequency of distomolar teeth in a population of 14.250 patients

OBJECTIVESThe supernumerary teeth that occur distally to a molar tooth described as “distomolar” teeth. Supernumerary teeth were found more often in the maxilla than in the mandible. They may erupt normally or remain impacted and appear inverted. Distomolar teeth are generally seen smaller than second or third molars and most of them are impacted The aim of this study is to determine the frequency, location, and shape of distomolar teeth in a population of urban Turkish adults.MATERIAL AND METHODSA retrospective observational study was conducted on 14.250 patients’ panoramic images, with the documentation of demographic data, the presence of distomolar teeth, their number and morphology.RESULTSThe presence of distomolars in this population was found to be 0.32%. In total, 55 distomolar teeth were detected in 45 patients. All distomolars were found in maxilla and majority of them were impacted (n=51, 92.7% of the distomolars). 19 distomolars were found bilaterally in nine cases (0.06%). In one patient, two distomolars were detected in the maxilla in which one in left and the other in the right side.CONCLUSIONSDistomolars, which described as a supernumerary tooth distal to the third molar, are rare occurring dental anomalies. Because of that clinicians should make a careful investigation of panoramic radiographs

SOMA LİNYİT AÇIK OCAĞINDA OLUŞAN DEFORMASYONLARIN İNKLİNOMETRİK YÖNTEMLE İZLENMESİ

2013 yılı Ocak-Ekim döneminde, Türkiye Kömür İşletmeleri-Ege Linyitleri İşletmesi Soma linyit açık ocağı Işıklar panosunda oluşan şev duraysızlıklarına bağlı gelişen deformasyonların miktarlarının ve yönlerinin yüzeyden ve derinden belirlenmesi amacıyla açılan iki adet inklinometre kuyusundan TKİ-ELİ tarafından ölçümler alınmıştır. Bu çalışmada bu ölçümlerin sonuçları değerlendirilmiştir. Bu değerlendirmeler sonucunda alt kuyuda (ALT-1) yaklaşık 80 mm ve üst kuyuda da (ÜST-1) yaklaşık 6 mm deformasyonlar tespit edilmiştir. Üst kuyudaki en büyük tekrarlayan deformasyon aralığının 26 metre derinlikte, alt kuyuda ise 16,5 metre derinlikte gerçekleştiği ve her iki hareket yönünün de güney batı istikametinde olduğu belirlenmiştir. Bu elde edilen veriler kayma düzleminin yeri ve kayması muhtemel kütlenin miktarını ortaya çıkarırken kaymaya karşı alınacak tedbirler için de bir veri tabanı oluşturacaktır

The diabetic brain and cognition

The prevalence of both Alzheimer’s disease (AD) and vascular dementia (VaD) is increasing with the aging of the population. Studies from the last several years have shown that people with diabetes have an increased risk for dementia and cognitive impairment. Therefore, the authors of this consensus review tried to elaborate on the role of diabetes, especially diabetes type 2 (T2DM) in both AD and VaD. Based on the clinical and experimental work of scientists from 18 countries participating in the International Congress on Vascular Disorders and on literature search using PUBMED, it can be concluded that T2DM is a risk factor for both, AD and VaD, based on a pathology of glucose utilization. This pathology is the consequence of a disturbance of insulin-related mechanisms leading to brain insulin resistance. Although the underlying pathological mechanisms for AD and VaD are different in many aspects, the contribution of T2DM and insulin resistant brain state (IRBS) to cerebrovascular disturbances in both disorders cannot be neglected. Therefore, early diagnosis of metabolic parameters including those relevant for T2DM is required. Moreover, it is possible that therapeutic options utilized today for diabetes treatment may also have an effect on the risk for dementia. T2DM/IRBS contribute to pathological processes in AD and VaD. © 2017 Springer-Verlag GmbH Austri

The association between serum YKL-40 levels, mean platelet volume, and c-reactive protein in patients with cellulitis

cure, erkan/0000-0001-7807-135X; Cure, Medine Cumhur/0000-0001-9253-6459; ERTURK, AYSE/0000-0001-6413-9165WOS: 000349843900013PubMed: 25657159Background: Lower limb cellulitis is an infectious disease that has serious complications unless it is treated. Objectives: in this pilot study, we evaluated whether levels of YKL-40, an acute-phase reactant, and mean platelet volume (MPV), which occurs secondary to inflammation in cellulitis, increase compared to healthy subjects. We also aimed to investigate the association between YKL-40 and MPV in the prognosis of the patients. Material and Methods: A total of 55 patients with cellulitis (23 men and 32 women) and a similar age group of 46 healthy individuals (22 men and 24 women) were included in the study. Cellulitis was diagnosed according to guideline. Serum YKL-40 levels, MPV, C-reactive protein (CRP), and other biochemical values of both groups were compared. Results: YKL-40 levels (52.2 +/- 34.5 ng/mL vs 34.6 +/- 18.0 ng/mL, P = 0.004), MPV (7.7 +/- 1.0 fL vs 6.9 +/- 0.7 fL, P < 0.001), and CRP (9.5 +/- 8.2 mg/dL vs 0.7 +/- 0.6 mg/dL, P < 0.001) were significantly higher in the patients with cellulitis than the control. the mean recovery time (RT) of the patients was 22.6 +/- 6.9 days. We found that YKL-40 (odds ratio [OR] 0.1, confidence interval [Cl] 0.028-0.191, P = 0.009) and MPV (OR 2.4, Cl 0.254-4.578, P = 0.029) have an independent association with RT. Conclusion: YKL-40 and MPV values were correlated with higher CRP in the cellulitis group than in controls. According to these results, increased YKL-40 and MPV levels might be a prognostic factor for cellulitis in patients