Particle based modeling and simulation of natural phenomena

Ankara : The Department of Computer Engineering and the Institute of Engineering and Science of Bilkent University, 2010.Thesis (Ph. D.) -- Bilkent University, 2010.Includes bibliographical references leaves 92-108.This thesis is about modeling and simulation of fluids and cloth-like deformable objects by the physically-based simulation paradigm. Simulated objects are modeled with particles and their interaction with each other and the environment is defined by particle-to-particle forces. We propose several improvements over the existing particle simulation techniques. Neighbor search algorithms are crucial for the performance efficiency and robustness of a particle system. We present a sorting-based neighbor search method which operates on a uniform grid, and can be parallelizable. We improve upon the existing fluid surface generation methods so that our method captures surface details better since we consider the relative position of fluid particles to the fluid surface. We investigate several alternatives of particle interaction schema (i.e. Smoothed Particle Hydrodynamics, the Discrete Element Method, and Lennard-Jones potential) for the purpose of defining fluid-fluid, fluid-cloth, fluid-boundary interaction forces. We also propose a practical way to simulate knitwear and its interaction with fluids. We employ capillary pressure–based forces to simulate the absorption of fluid particles by knitwear. We also propose a method to simulate the flow of miscible fluids. Our particle simulation system is implement to exploit parallel computing capabilities of the commodity computers. Specifically, we implemented the proposed methods on multicore CPUs and programmable graphics boards. The experiments show that our method is computationally efficient and produces realistic results.Bayraktar, SerkanPh.D

A Survey on Physical Education and Sport Department Students’ Opinion about Cooperative Learning Method

The aim of the study is to find out the opinion of the students who had taken two different courses as theoretical and applied courses about this learning strategy with the help of cooperative learning method and to match the opinion of students who are studying theoretical and applied courses with each other. Totally, 55 students, 25 of which are the ones who studied applied “Basic Gymnasium” in the curriculum of Physical Education and Sports Academy of Education Faculty in the academic year of 2009-2010, and, 30 of which are the ones who studied theoretical “Physical Education and Fundamentals of Sports” at the same department in the academic year of 2010-2011, constitute the sample group of cooperative learning method that was applied. At the end of courses, student opinion scale that was developed by the researchers in order to detect the interests of students about the related method was applied to the students. In order to find out the opinion of the students about the method, their answers to the questions were evaluated statistically and percentage distributions were given comparatively as a result of the applications that have been done. According to the data that was gathered, the application of cooperative learning method in physical and sports department was confronted positively. The study has revealed that the students to whom cooperative learning method was applied in applied courses had more positive thoughts than the students to whom cooperative learning method was applied in theoretical courses. Keywords: Cooperative Learning, Theoretical Courses, Applied Courses, Students’ Opinion

Níveis de prontidão na gestão da qualidade total

The aim of this study was to define the perceptions of instructors of Near East University based on their level of readiness for total quality management. Total quality management is a management mentality that provides institution or organization with maximum productivity, reduced level of defects, high level of satisfaction for participants and principles of democracy within a company. Acceptance of total quality management as a mentality rather than a tool seems to be the most important way to implement it successfully. For this purpose, a special questionnaire has been prepared, which was checked for its reliability and validity by Cronbach`s Alpha analysis (.963). The questionnaire was composed of two parts. The first part included personar information, whereas the second part focused on the students in terms of the centered, quality concept centered, continuous education centered, management, manager and leadership centered, measurement of quality centered and organization structure centered factors of total quality management. A total of 69 suggestions were related to these factors. The research was conducted with 120 participants who were instructors at Near East University and also residents of the Turkish Republic of Northern Cyprus. Collected data were analyzed by the SPSS 12.00 statistical package program through T-Test, Variance Analysis (ANOVA) and LSD Test. Furthermore, descriptive interpretations have been made by using frequencies, percentages, standard deviations and arithmetical means. In this study, the perceptions of Near East University instructors based on their readiness level for total quality management were identified. Additionally, the instructors perception levels were analyzed according variables of: faculty/vocational school, employment status (full time/part time), degree level, education field, gender, professional level and position were analyzed. Based on these variables, their perceptions of student centered, participation centered, quality concept centered, continuos education centered, management, manager and leadership centered, measurement of quality centered and organization structure centered wre analized.El objetivo de este estudio fue definir las percepciones de los instructores de Near East University en función de su nivel de preparación para la gestión de calidad total. La gestión de la calidad total es una mentalidad de gestión que proporciona a la institución u organización la máxima productividad, un nivel reducido de defectos, un alto nivel de satisfacción para los participantes y los principios de democracia dentro de una empresa. La aceptación de la gestión de la calidad total como una mentalidad en lugar de una herramienta parece ser la forma más importante de implementarla con éxito. Para este propósito, se preparó un cuestionario especial, que fue verificado por su análisis de Alpha de Cronbach (.963). El cuestionario estaba compuesto por dos partes. La primera parte incluía información personal, mientras que la segunda se centró en los estudiantes en términos de centrado, concepto de calidad centrado, educación continua, administración, gestión y liderazgo centrado, medición de la calidad centrada y factores centrados en la estructura de la organización de la gestión de la calidad total. Un total de 69 sugerencias se relacionaron con estos factores. La investigación se realizó con 120 participantes que fueron instructores en la Universidad del Cercano Oriente y también residentes de la República Turca del Norte de Chipre. Los datos recopilados se analizaron mediante el paquete estadístico SPSS 12.00 a través de T-Test, Variance Analysis (ANOVA) y LSD Test. Además, se han realizado interpretaciones descriptivas utilizando frecuencias, porcentajes, desviaciones estándar y medios aritméticos. En este estudio, se identificaron las percepciones de los instructores de la Universidad del Cercano Oriente según su nivel de preparación para la gestión de la calidad total. Además, se analizaron los niveles de percepción de los instructores según las variables de: facultad / escuela vocacional, situación laboral (tiempo completo / tiempo parcial), nivel de grado, campo de educación, género, nivel profesional y posición. Sobre la base de estas variables, se analizaron sus percepciones de centrado en el alumno, centrado en la participación, centrado en el concepto de la calidad, centrado en la educación continua, gestión, gestión y liderazgo, centrado en la calidad y centrado en la estructura de la organización.O objetivo deste estudo foi definir as percepções dos instrutores da Universidade do Oriente Próximo com base no seu nível de prontidão para o gerenciamento da qualidade total. A gestão da qualidade total é uma mentalidade de gestão que proporciona à instituição ou organização o máximo de produtividade, reduzido nível de defeitos, alto nível de satisfação dos participantes e princípios de democracia dentro de uma empresa. A aceitação da gestão da qualidade total como uma mentalidade, e não como uma ferramenta, parece ser a maneira mais importante de implementá-la com sucesso. Para tanto, foi elaborado um questionário especial, que foi verificado quanto à sua confiabilidade e validade pela análise de Alpha de Cronbach (.963). O questionário foi composto de duas partes. A primeira parte incluía informação persona, enquanto a segunda parte focava nos estudantes em termos de centrado, centrado no conceito de qualidade, centrado na educação continuada, gestão, gestor e liderança centrada, medição dos fatores centrados na qualidade e centrados na estrutura organizacional da gestão da qualidade total. Um total de 69 sugestões foram relacionadas a esses fatores. A pesquisa foi realizada com 120 participantes que eram instrutores da Universidade do Oriente Próximo e também residentes da República Turca do Norte de Chipre. Os dados coletados foram analisados pelo programa estatístico SPSS 12.00 por meio do teste T, Análise de Variância (ANOVA) e Teste LSD. Além disso, interpretações descritivas foram feitas usando freqüências, porcentagens, desvios-padrão e meios aritméticos. Neste estudo, foram identificadas as percepções dos instrutores da Universidade do Oriente Próximo com base em seu nível de prontidão para a gestão da qualidade total. Além disso, os níveis de percepção dos instrutores foram analisados de acordo com variáveis de: faculdade / escola profissionalizante, situação empregatícia (tempo integral / meio período), grau, escolaridade, gênero, nível profissional e posição. Com base nessas variáveis, suas percepções de centrada no aluno, centrada na participação, centrada no conceito de qualidade, centrada na educação contínua, centrada na gestão, gerente e liderança centrada, medição da qualidade centrada e estrutura organizacional centralizada

The Investigation on Physical Education Teacher Candidate’s Resilience, Tenacity and Motivation Levels

The main purpose of this study is to examine possible relationships between resilience, tenacity and motivation of physical education teacher candidates. In addition, resilience, tenacity and motivation levels were examined according to class and gender levels. Participants of the study are 154 PE students in Ağrı province. There are 50 female participants and 104 male students. The Resilience Scale adapted to Turkish by Sarıçam et al. (2012). The Tenacity Scale-Short Form adapted to Turkish by Sarıçam et al. (2016) Stability Scale and Personal Information Form were used. To analyze the data, t test, ANOVA, Pearson moment product correlation analysis and multiple regression analysis were used. 99% p <.01 was taken as confidence interval in the study. According to research findings, there are statistically significant relationships in positive direction among the resilience, tenacity and motivation in the candidates of physical education teachers. When the resilience increases, tenacity and motivation levels also increase. According to gender and class level, resilience, tenacity and motivational stability do not differ statistically. The study can be expanded by adding different sections and classes

Application Of Construction Control In Global Scale And Its Development Process In Turkey

Tez (Yüksek Lisans) -- İstanbul Teknik Üniversitesi, Fen Bilimleri Enstitüsü, 2001Thesis (M.Sc.) -- İstanbul Technical University, Institute of Science and Technology, 2001Bu çalışmada öncelikle yapı denetimi kavramının dünya genelindeki tarihsel gelişimi incelenmiş, özellikle Anadolu tarihinde meydana gelen doğal afetler ile bunlara karşı alınan tedbirlerden bahsedilmiştir. Daha sonraki bölümde günümüzde gelişmiş ülkelerde uygulanmakta olan yapı denetim sistemleri araştırılmış ve örnek alınan her ülkedeki sorumluluk ve denetim anlayışları ayrı ayrı açıklanmıştır. Burada inceleme konusu olan ülkelerin hemen hepsinde sigorta güvencesinin, sistemleri tamamlayan bir unsur olarak kullanıldığı görülmüştür. Bunun üzerine sigorta kavramı incelenmiş, sigortanın temel ilkelerinden bahsedilmiş, Türkiye’de ve dünyadaki gelişim süreci araştırılmıştır. Daha sonra sigorta kavramı daha özele indirgenerek inşaat sigortalarından bahsedilmiş, bu sigortaların temel özellikleri, dünyadaki ve ülkemizdeki uygulama alanları araştırılmış ve gelişmiş ülkelerde yapı denetim sistemlerini hangi anlamda ve hangi şartlar altında güvence altında aldıkları ortaya konmuştur. Çalışmanın ikinci kısmında Türkiye’de uygulanan ve 1999 yılında meydana gelen depremlerden sonra yürülükten kaldırılan yapı denetim sistemi ele alınmıştır. Bu sistemin tarafları, kamu ve özel sektör açısından işleyişi incelenmiş, çalışmanın ilerleyen bölümlerinde değişik kesimlerden sisteme getirilen eleştiriler ile çözüm önerileri geniş biçimde ortaya konmuştur. Tezin son bölümlerinde ülkemizde yürülüğe konan yeni yapı denetim sistemi incelenmiş, inşaat ve sigorta sektörünün yeni sisteme bakış açısından bahsedilmiştir. Burada sistemin aksayan yönleri gerek inşaat gerekse sigorta sektörünün bakış açısından yansıtılmıştır.Sonuçlar ve öneriler kısmında yazarın yaptığı araştırmalar sonucu bugün yürürlükte olan yapı denetim sistemi hakkındaki kendi görüş ve önerileri yer almaktadır.In the first chapter of this thesis, the worldwide development of construction control and the disasters that occured in Anatolia including precautions against the possible ones were mentioned. The following chapter explains construction control methods applied in developed countries and also the supervision comprehension of these systems. The researches point that insurance guarantee is used as an accomplishment for most of the systems. Thus, the insurance concept was studied including the basic principles of insurance and the development process in Turkey and all over the world. Later, the concept of insurance was more specialized and the construction insurances were studied including the basic properties, the global application areas of these insurances and how developed countries would bind them with their construction control systems. The second part of this study contains researches about the old construction control system in Turkey which was abolished after the major earthquakes that took place back in 1999. The parties of this system including the systems process for public and civil sector were discussed and later on, the critics and the solution methods for this system were also mentioned. The last chapters of this thesis explain the basic properties of the new construction control system and the critics made by both construction and the insurance sectors. The last part of this study consists of conclusions and author’s recommendations about the new system.Yüksek LisansM.Sc

Kütle-yay sistemleri kullanarak kumaş modellemek

Cataloged from PDF version of article.Thesis (M.S.): Bilkent University, Department of Computer Engineering, İhsan Doğramacı Bilkent University, 2002.Includes bibliographical references (leaves 50-52).by Serkan Bayraktar.M.S

Allergic reactions to human insulin: a review of current knowledge and treatment options.

Although the incidence of insulin allergy decreased after the introduction of recombinant human insulin preparations, it is still a major problem which may be life-threatening in some cases. In this article, we attempted to review current knowledge concerning allergic reactions to human insulin and discuss the available treatment options of insulin allergy

The Effect of Sporting Habits and Different Variables on Self-Esteem of Police Officers

Having low or high self-esteem is considered to have an effect on one's attitude to wards himself or her self as well as to wards other individuals in the society. The refore, it is importantto determine the factors that improve individuals' self-esteem. Considering that the quality of education obtained by an individual has an impact on self-esteem, it is imperative to pointout what factors in the education process boostone's self-esteem and to execute such factors. The purpose of this study is to investigate the effect of sporting activities on self-esteem of police officers with respect to different variables. The total of 266 police officers, 32 female and 234 male, who serve in the City of Erzurum in Turkey participated in this survey. Scale of Self Esteem, developed by Kuzgun (2005), was used in order to gather data. T test and variance analysis were utilized as well. The difference among the groups' choices is evaluated based on P 0.05 significancelevel. Based on the evaluation of the survey results, no difference among police officers was observed in terms of average self-esteem with respect to gender and sporting habits, where as, a difference was observed in terms of average self-esteem with respect to the type of sport performed. Those who perform individual sportst end to have higher self-esteem compared to those who perform team sports or no sport at all. Since, having police officers with high self-esteem serve and interact with individuals will have a positive effect on social interactions in the society. It is imperative to provide opportunities and encoruge policeofficers to do individual sports and to further study the factors that may help increase the self-esteem of such individuals

Yoga versus home exercise program in children with enthesitis related arthritis: A pilot study

Purpose: The aim was to compare the effects of yoga and home exercise program on lower extremity functional status, pain, and quality of life in children with enthesitis related arthritis (ERA). Methods: Twenty-one children with ERA were divided into two groups as yoga (n = 11) and home exercise (n = 10). Yoga group performed supervised yoga exercises twice a week for eight weeks. Home exercise group performed video-based exercises for the same period. Pain in rest and activity, lower extremity functional status, and quality of life were evaluated at baseline and following eight weeks. Results: The groups were similar at baseline (p > 0.05). All the parameters, except parent reported quality of life, significantly improved in yoga group (p < 0.05), where only stair climb test times significantly improved in home exercise group (p < 0.05). Conclusions: Yoga seems promising for improving lower extremity functional status, pain, and quality of life as an exercise intervention in rehabilitation programs of children with ERA