82 research outputs found

    A spatial analysis of the physical properties of Sivas Cumhuriyet University Campus

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    Research problem/aim: This study aimed to reveal the physical characteristics of the Sivas Cumhuriyet University Campus. University campuses are equipped with highly diversified physical qualities in terms of the design and planning stages. The quality and property of the physical space are the values that enrich and develop the livable, accessible, and perceptible features of the campus space. In this study, the basic physical components that make up a university campus were identified in order to analyze their qualities. Method: The method was based on fieldwork documentation tools such as observation, on-site examination, photography, and drawing. Accordingly, the Sivas Cumhuriyet University campus was evaluated in terms of its basic physical characteristics such as borders, building usage patterns, morphology, occupancy-vacancy, common areas, and green areas. Findings: It was determined that the campus space has a scattered and disjointed group of relationships, and individual and independent spatial arrangements present a fragmented appearance throughout the built environment. Accordingly, it was determined that the common and green areas and the occupancy-vacancy relations were disturbed, and a morphologically unstable and scattered physical space presentation emerged. Conclusions: Ultimately, this study, which analyzed the current physical environment of the campus, proposed the preparation of an urgent design guide for the campus in order to transform the built environmental components that have been constructed in a disconnected, dispersed, fragmented and unrelated manner into holistic, coherent and continuous spatial organizations

    Evaluation of trabecular bone microstructure of mandibular condyle in edentulous, unilateral edentulous and fully dentate patients using cone-beam computed tomography

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    Background: The aim of this study was to compare the trabecular bone microstructure of the mandibular condyle in edentulous, unilateral edentulous (Kennedy Class II), and fully dentate patients.Materials and methods: The study used the cone-beam computed tomography (CBCT) images of 17 fully dentate (34 condyles), 16 edentulous (32 condyles), and 17 unilateral edentulous patients (34 condyles) aged 19 to 80 years. The trabecular bone microstructure of the mandibular condyle was evaluated on 8 consecutive cross-sectional images of these patients. In the microstructure analysis, structural model index (SMI), ellipsoid factor (EF), bone volume fraction (BV/TV), trabecular thickness (Tb.Th) and trabecular seperation (Tb.Sp) were measured.Results: There was no significant difference between the mean SMI, BV/TV, EF and Tb.Th microstructure values of each group (p = 0.243, p = 0.095, p = 0.962, p = 0.095, respectively). However, there was significant difference in terms of mean Tb.Sp between the groups (p = 0.021). The trabecular structure in all three groups was more rod-shaped. No correlation was found between age factor and microstructure values.Conclusions: Considering the in vivo microstructure analysis of CBCT images, it can be said that teeth loss does not have a significant effect on the microstructure parameters excluding Tb.Sp of mandible condyles and does not affect mandibular condyle trabecular endurance

    Preobrazba središta grada Sivasa u kontekstu prostornoga kontinuiteta i kulturnih obrazaca

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    Situated to the east of central Anatolia, Sivas is one of the oldest cities in Turkey. Due to cultural shifts, the location of the city’s historical areas allows us to investigate the development of its urban morphology. Additionally, the spatial continuity of the city has been interrupted by visions of globalization, and the city center has been subject to rapid and devastating transformations. This text aims to examine how Sivas city center has been changed over time with regards to spatial legibility.Sivas je jedan od najstarijih gradova u Turskoj, smješten istočno od središta pokrajine Anatolije. Lokacije povijesnih zona zbog kulturnih promjena omogućavaju istraživanje razvoja urbane morfologije. Globalizacijske vizije razvoja prekidaju prostorni kontinuitet, a gradsko središte grada Sivasa podložno je brzim i razornim preobrazbama. Cilj je rada promotriti kako se gradsko središte Sivasa mijen jalo tijekom vremena s obzirom na prepoznatljivost prostora

    Using simulated annealing for computing test case-aware covering arrays

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    Exhaustive testing of highly configurable software systems is generally infeasible in practice. For this reason, efficient sampling of the configuration space is important to improve the coverage of testing. A t-way covering array is a list of systematically selected configurations covering all value combinations for every t-way option combinations and it aims to discover faults caused by interactions of configuration options. Despite its many successes, it can be difficult to use covering arrays in practice. Once a traditional t-way covering array is constructed, the system is then tested by running its test cases in all the selected configurations. By doing so, traditional covering arrays assume that all test cases can run in all configurations of covering array. Recent studies, however, show that test cases of configurable systems are likely to have assumptions about the underlying configurations, i.e., they are like to have some test case-specific inter-option constraints. When a configuration does not satisfy the test casespecific constraints of a test case, that test case simply skips the configuration, which prevents the test case from testing all valid combinations of option settings appearing in the configuration an effect called a masking effect. A harmful consequence of masking effects is that they can make the developers to believe that they have tested certain option setting combinations while they in fact have not. A solution approach is to use test case-aware covering arrays a novel type of combinatorial objects for testing that has been recently introduced. Test case-aware covering arrays take test case-specific inter-option constraints into account when computing combinatorial interaction test suites, such that no masking effects caused by overlooked constraints occur. Given a configuration space model augmented with test case-specific constraints, a test case-aware covering array is not just a set of configurations as is the case in traditional covering arrays, but a set of configurations each of which is associated with a set of test cases, indicating the test cases scheduled to be executed in the configuration. Although it has been empirically demonstrated that test case-aware covering arrays, compared to traditional covering arrays, can significantly improve the quality of combinatorial interaction testing by avoiding masking e ects, there is no efficient and effective algorithms to compute them, except for a couple of proof-of-concept algorithms. We conjecture that this greatly hurts the adaptation of test case-aware covering arrays in practice. In this thesis, we have developed simulated annealing-based, efficient and effective algorithms to compute test case-aware covering arrays and a tool implementing these algorithms. We, furthermore, compare and contrast the performance of our algorithms by conducting large-scale experiments in which we used two highly configurable large software systems. The results of our empirical studies strongly suggest that the proposed algorithms are an efficient and effective way of computing test case-aware covering arrays and that they perform better than existing approaches

    Modulated Model Predictive Control of Permanent Magnet Synchronous Motors with Improved Steady-State Performance

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    Finite Control Set Model Predictive Control (FCS-MPC) is an optimal control strategy that predicts the future trends of the control goals by assessing the discrete-time model of the system. FCS-MPC has many advantages, such as it has a fast dynamic response, and nonlinearities can be controlled by the customized cost function. Besides the featured benefits of the FCS-MPC strategy, the ripple in the output variable (in most cases, control variable) may be problematic due to the uncontrolled switching frequency. For that reason, the MPC-based closed-loop strategy offers a better regulation performance at high-sampling frequency. However, the selection of a low sampling rate causes an unpleasant distortion or poor power quality. A modulated model predictive control method is proposed in this work to suppress the unwanted distortion in the control variable. In the proposed method, a space vector modulator is integrated into the FCS-MPC-based control method to attain a fixed-switching frequency. By doing so, the distortions and unwanted harmonics are significantly decreased. In this paper, a modulated model predictive control (M2PC) method is proposed for controlling the permanent magnet synchronous motor. The proposed method calculates the dwell-time of the modulator stage by assessing the multi-objective cost function. The noticeable lower distortions in the stator currents are obtained by the proposed routine. All theoretical concepts are verified by extensive simulations. Based on the simulation results, the proposed method provides a better control performance for permanent magnet synchronous motors (PMSM). Furthermore, the proposed modulated MPC strategy offers superior steady-state performance compared to the conventional MPC method in all regards

    Leading and Teaching with Technology: School Principals’ Perspective

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    Technology has changed the way people live, from use of the Internet to the way they communicate with text messages and e-mails. This change is also evident in education system. This study traced how principals' leadership roles have changed in the school setting because digital natives and society in general have become technologically savvy. The findings for this study were generated from interviews and observations of high school principals. This qualitative research study revealed that administrators are apprehensive about social media in the classroom and that they need to become more familiar with this to better implement technology effectively in the classroom. To ease their apprehension, principals need to change their ways of thinking about social media's use.st   digital educational environment

    Moving forward with combinatorial interaction testing

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    Combinatorial interaction testing (CIT) is an efficient and effective method of detecting failures that are caused by the interactions of various system input parameters. In this paper, we discuss CIT, point out some of the difficulties of applying it in practice, and highlight some recent advances that have improved CIT’s applicability to modern systems. We also provide a roadmap for future research and directions; one that we hope will lead to new CIT research and to higher quality testing of industrial systems

    Amasya ilinde yerleşik kamu çalışanlarının serbest zaman etkinliklerine katılım düzeyleri ve bu etkinlikler içinde sporun yeri

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    Tez (Yüksek Lisans) -- Kırıkkale Üniversitesi116757

    A search concerning the inspection and the analysis of the fatal risks in constructions

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    Sosyal devlet olabilmenin en önemli koşullarından biri insanların çalışma hakkının güvenli bir şekilde kullanılmasını sağlamaktır. Her geçen gün yapılan çalışmalar ve düzenlenen mevzuatlarla çalışanların çalışma koşulları iyileştirilmekte, iş sağlığı ve güvenliği konusunun hayatımızın vazgeçilmez bir parçası olduğu bilinci topluma yerleştirilmeye çalışılmaktadır. İşçi, işveren ve devletten oluşan üçayaklı mekanizmanın devlet ayağının önemli bir kolu olan teftiş sisteminin etkin bir şekilde uygulanmasının iş sağlığı ve güvenliğinin sağlanmasında önemli bir etken olduğu bilinen bir gerçektir. Bu çalışmanın amacı inşaat faaliyetleri sırasında gerçekleşen iş kazalarından hayati önem taşıyan risklerin, iş kazası verilerinin kullanılarak istatistiksel yöntemlerle analiz edilmesi ve hata ağacı yönteminin kullanılarak bu hayati risk unsurlarının denetimine ilişkin öneriler geliştirilmesidir. Veri kümesi olarak 2008-2012 yılları arasındaki sürede iş müfettişleri tarafından incelenen 380 adet inşaat iş kazası raporu kullanılmıştır. Sonuç olarak, karar ağaçları ve hata ağacı analizi ile incelenen iş kazalarına bağlı olarak inşaat işyerlerinde hangi risklerin öncelikli olduğu gösterilmiş ve bu risklere bağlı olarak bir skor algoritması elde edilerek hangi yönetmelik maddelerinin hayati risk olarak kabul edilebileceği belirlenmiştir.To ensure the safety usage of the constitutional right of working of people, is one of the important provisions to be a social state. Every passing day, with arranged legislations and studies, working conditions tried to upgraded and the awareness that the occupational health and safety is indispensable part of our lives tried to pose to the society. It is fact that the effective implementation of labour inspection which is an important arm of state leg of the tripod mechanism which comprises of employee, employer and state, is an important factor provides occupational health and safety. Tha aim of this study is to analyze the fatal risks by means of occupational accidents which occured in constructions with statistical methods and to make offers concerning inspection about fatal risks with decision tree method. 380 reports of occupational construction accidents which occured between 2008-2012 are used as data set. As a result, according to the analyzed occupational accidents which risks are prior shown and risk grades of regulation articles identified by gaining the score algorithm based on the statistical results of the risks
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