THE OPINIONS OF TEACHERS AND STUDENTS IN THE SCIENCE AND ART CENTER REGARDING THE CONCEPT OF SPECIAL TALENTED

Considering the potential of special talented students, the importance of training them is increasing day by day. The perspectives of special talented students and their teachers regarding the concept of special talented are also effective in revealing students' potential. The aim of this study is to determine the opinions of the teachers and students in the Science and Art Center about the concept of special talented. The study was carried out with 20 teachers and 55 students in Science and Art Centers in Turkey in the 2019-2020 academic year. Case study, one of the qualitative research designs, was used. Participants were determined using accessible case sampling. A semi-structured interview form prepared by the researchers was used as a data collection tool. Descriptive analysis was used to analyze the data obtained as a result of the interviews. It has been tried to reflect the positive and negative aspects of special talented students from the perspective of teachers and students. As a result of this study, it has been determined that teachers and students in the Science and Art Center perceive the concept of special talented students as individuals who offer creative solutions to problems and who have a quick grasp. In addition, both students and teachers think that receiving education at Science and Art Centers makes positive contributions to students. Finally, different types of suggestions are made in order to increase the positive sides and eliminate the negative sides of special talented students.  Article visualizations

Characterizing mathematical discourse according to teacher and student interactions: The core of mathematical discourse

The discussion on the development of mathematical discourse plays a key role in the determination of the in-classroom interactions in mathematics learning and instruction. The present study aims to present a theoretical framework for the nature of mathematical discourse that addresses the teacher and student interaction in the classroom. Previous studies attempted to discuss the theoretical structure in mathematical discourse with the embedded theory approach. The findings revealed the core of mathematical discourse that reflected the structure of mathematical discourse based on open, axial and selective codes determined based on the embedded theory approach. The external structure of this core reflects the types of in-classroom interaction, while the internal structure reflects the development of the mathematical discourse. The external structure included four types of interaction: teacher, teacher-class, teacher-student, and student-student. The internal structure includes mathematical discourse movements associated with three stages: motivation, explanation of mathematical ideas, and achievement of mathematical ideas. The external structure of mathematical discourse core revealed the general state of in-classroom interaction core, and the internal structure revealed the specific mathematical discourse based on the mathematical content. It could be suggested that the discourse movements in the mathematical discourse core determined in the present study would provide guidelines for mathematical communications. The study also includes recommendations for future studies on the employment of this general and specific theoretical mathematical discourse framework

Potansiyel biyolojik ve tıbbi aktiviteleri olan pirolo[1,2-a]kinoksalin ve iyotpiridin türevlerinin sentezi

TÜBİTAK TBAG01.10.201215bH-İzokinolino[1,2-c]pirolo[1,2-a]kinoksalin (3), 5-alkiliden-1,2-benzo-5,14b-dihidro-4H- [1,4]oksazepino[5,4-c]pirolo[1,2-a]kinoksalin (5) ve 2,3,4-trisübstitüye-5-iyotpiridin (7) bileşikleri organik kimyada önemli bileşikler olup uygun gruplar taşıyan birçok türevinin antiallerjik, antimalaryal (sıtmayı önleyici), antitüberküloz (veremi önleyici), antiülser, antitümör ve antikanser özellikleri vardır. Bu nedenle bu tür bileşikler ilaç tasarımında büyük önem kazanmıştır çünkü daha etkili antitümör maddelerinin bulunması ve geliştirilmesi kanser gibi hastalıkların tedavisinde yeni umutlar olabilir. Organik bileşiklerin biyolojik aktiviteleri hakkında bazı tahminler yapılabilmekle beraber aktivitelerin kesin olarak belirlenmesi ancak bileşiklerin biyolojik aktivite testleri ile mümkündür. Bu da bileşiklerin önce eldesini yani laboratuvarda sentezini gerektirmektedir. Bu projede aşağıda gösterildiği üzere bu bileşiklerin sentezi için yeni ve uygulanabilir metotlar geliştirilmiştir. Önerilen yöntemler test edilip tepkime şartları optimize edilmiştir. Çözücü, konsantrasyon, zaman ve sıcaklığın ürün verimleri üzerine olan etkileri araştırılıp oluşan ürünler spektroskopik yöntemlerle karakterize edilmiştir. Pirolokinoksalin 3 ve 5 bileşiklerinin π-konjuge fonksiyonel grupları içermesi nedeniyle potansiyel organik yarı iletken ve lüminesent malzeme özellikleri olabilir.15bH-Isoquinolino[1,2-c]pyrrolo[1,2-a]quinoxaline (3), 5-alkylidene-1,2-benzo-5,14b-dihydro-4H- [1,4]oxazepino[5,4-c]-pyrrolo[1,2-a]quinoxaline (5) and 2,3,4-trisustituted-5-iodopyridine (7) derivatives have gained importance in organic chemistry since properly substituted many derivatives exhibit antiallergic, antimalarial, anti-tuberculosis, antiulcer, antitumor and anticancer activities. For this reason, such compounds are valuable candidates in drug design since development of new potential antitumor compounds is likely to provide new promising drug substances for curing the cancer type diseases. Although the biological activities of organic compounds can be predicted to some extent, the certain activities can be determined only by their biological activity tests, which would require first the laboratory synthesis of such compounds. In this project as shown below, new and applicable methodologies have been developed for the synthesis of such compounds. Proposed new methodologies have been tested and reaction conditions have been optimized. The effect of solvent, concentration, time and temperature on the product distribution has been investigated and the resulting products have been characterized by spectroscopic methods. Pyrroloquinoxaline compounds 3 and 5 may display organic semiconductor and luminescent material properties since they have π- conjugated functional groups

Fantastic realism

Tez (Yüksek Lisans) -- Mimar Sinan Üniversitesi Sosyal Bilimler Enstitüsü, 1986.Kaynakça var.[Abstract Not Available

The vıews of secondary school mathemetıcs teachers on theır dıstance educatıon experıences: the case of Turkey

Distance learning process was initiated by the Ministry of National Education to allow equal opportunity and to improve accessibility, and the teachers provided online courses, exams or material. In the present study, conducted to determine the views of mathematics teachers, who are among the stakeholders in the process, on their experiences in online instruction of the mathematics course in secondary schools, phenomenology approach, a qualitative research method, was employed. The findings of the present study conducted with 105 secondary school mathematics teachers employed in seven regions in Turkey demonstrated that the middle school mathematics teachers considered distance education an obligation to continue mathematics courses and to maintain the communication with their students. It was also observed that the teachers believed that it would be difficult to instruct the mathematics course online due to its nature. It was determined that the predominant view argued that distance education allowed instruction of the course independent of the time and the place, and hence an advantage of the process, but the teachers also stated that distance education had certain cognitive, affective, technical and social disadvantages. The teachers complained that technical problems such as internet access and lack of tablets led to a difficult process

Energy Effıcıent Placement Of Vırtual Securıty Functıons: Method Proposals And Applıcatıon

Yazılım Tanımlı Ağlar (Software Defined Networking - SDN) ve Ağ Fonksiyonlarını Sanallaştırma (Network Functions Virtualization – NFV) teknolojilerinin kullanıldığı ortamlarda güvenlik; saldırı tespit sistemi ve güvenlik duvarı gibi fonksiyonların sanallaştırılması ve birer yazılım haline getirilerek genel amaçlı sunucular üzerinde çalıştırılması ile sağlanmaktadır. Bir ağda, sanal güvenlik fonksiyonları (virtual security functions - VSF) tarafından işlenen trafik akışlarının farklı güvenlik gereksinimleri olabilmektedir. Öte yandan her ağda, güvenlik sağlanırken göz önünde bulundurulması gereken ve ağın ihtiyaçlarına göre farklılık gösteren bir takım operasyonel amaçlar (maliyetin ez aza indirgenmesi, yük dengeleme yapılması vb.) vardır. Bu nedenle, ağın güvenlik gereksinimlerini ve operasyonel amaçlarını göz önünde bulundurarak VSF’lerin yerleştirilmesi ele alınması gereken önemli bir problemdir. Bu doğrultuda, tez kapsamında yapılan çalışmalar üç başlık altında toplanmıştır. İlk çalışmada, literatürde ilk defa bir taksonomi geliştirilmiş ve literatürdeki mevcut VSF yerleştirme çözümleri bu taksonomi ışığında sekiz boyutta sınıflandırılarak tartışılmıştır. İkinci çalışmada, literatürde ilk defa, trafik akışı bazında güvenlik gereksinimleri göz önünde bulundurularak enerji etkin bir şekilde sanal ağ güvenliği fonksiyonlarının yerleştirilmesi ve trafiğin ihtiyaçları doğrultusunda bu fonksiyonlar üzerinden yönlendirilmesi problemi modellenmiş ve çözülmüştür. Bu amaçla, bir Tam Sayılı Doğrusal Programlama (Integer Linear Programming – ILP) modeli geliştirilmiş ve bu modelin ölçeklenebilirlik sorununu çözmek için enerji tüketimini en aza indirgeyen çözümleri kısa sürede üreten yeni bir sezgisel algoritma önerilmiştir. Son olarak üçüncü çalışmada, geliştirilen yaklaşımın yazılım tanımlı ağ altyapısında uygulanabilirliğini göstermek için sezgisel algoritmanın aldığı kararlar doğrultusunda ağa gelen trafik akışlarını yönlendiren SDN kontrolcüsü geliştirilmiştir. Sonuç olarak, geliştirilen yöntemlerin, enerji tüketimini %48’e kadar azalttığı ve geliştirilen SDN kontrolcüsünün ağa gelen trafiği toplam bant genişliği, uçtan uca gecikme, paket kayıp oranı ve jitter gibi hizmet kalitesi parametreleri açısından etkin bir şekilde yönlendirebildiği görülmüştürIn Software Defined Networking (SDN) and Network Functions Virtualization (NFV) enabled environments, network security is provided by virtualizing security functions such as intrusion detection system and deep packet inspection etc., and deploying them on general-purpose servers as software. The traffic handled by virtual security functions (VSF) may have different security requirements. On the other hand, there are some operational objectives that differ according to the needs of the network such as minimizing cost and load balancing. Therefore, the issue of placing VSFs considering both security requirements and operational objectives is an important research challenge. In this regard, the studies conducted in the scope of this thesis is grouped under three parts. In the first study, a novel thematic taxonomy for classifying current VSF placement solutions is developed for the first time in the literature. State-of-the-art studies are reviewed and categorized based upon the eight dimensions of the developed taxonomy. In the second study, the problem of (i) VSF placement with the objective of minimizing energy consumption while meeting security requirements of the traffic at the flow-level, (ii) and routing flows through the VSFs according to their needs is defined and modelled for the first time in the literature. To this end, an Integer Linear Programming (ILP) model is developed to minimize server energy consumption. In addition, a novel heuristic algorithm that produces solutions minimizing energy consumption within practical time limits is proposed to solve the scalability issue of the ILP model for larger scale network instances. Finally in the third study, an SDN controller that forwards network traffic according to the results of the proposed energy-efficient VSF placement heuristic is developed in order to demonstrate the practicality of our placement approach in SDN infrastructures. As a result, it is concluded that the developed methods can reduce energy consumption by up to 48%, and network traffic can be effectively routed in terms of the QoS parameters including throughput, end-to-end latency, packet loss rate, and jitte