Elastik Zemine Oturan Sonsuz Uzun Elastik Kirişin Hareketli Yük Altında Dinamik Davranışı

Konferans Bildirisi -- Teorik ve Uygulamalı Mekanik Türk Milli Komitesi, 2013Conference Paper -- Theoretical and Applied Mechanical Turkish National Committee, 2013Bu çalışmada, elastik zemine oturan sonsuz uzun kirişin hareketli yük altında dinamik davranışı incelenmiştir. Hareket denkleminin analitik çözümü için üstel Fourier dönüşümü kullanılmıştır. Ters dönüşümlerde ortaya çıkan integrallerin hesabı rezidü integral teoremi ile yapılmış ve kirişin dinamik yer değiştirmelerinin yük hızı, yatak katsayısı ve sönüme göre değişimi incelenmiştir. Anahtar Kelimeler: Hareketli Yük, Rezidü Teoremi, Fourier Dönüşümü, Sonsuz Kiriş, Elastik ZeminIn this study, dynamic behavior of an infinite elastic beam on elastic foundation under moving load is investigated. The complex Fourier transform and the residue integral theorem are used in the analytical solution. Variation of dynamic displacements of the beam under moving loads is investigated with the load speed, the foundation stiffness, the beam damping. Keywords: Moving Load, Residue Theorem, Fourier Transform, Infinite Beam, Elastic Foundatio

Hareketli Yük Altında Köprü Titreşimlerinin Ayarlı Kütle Sönümleyiciler Kullanılarak Azaltılması

Konferans Bildirisi -- Teorik ve Uygulamalı Mekanik Türk Milli Komitesi, 2013Conference Paper -- Theoretical and Applied Mechanical Turkish National Committee, 2013Bu çalışmada, ayarlı kütle sönümleyiciler (AKS) kullanılarak hareketli yük etkisindeki tek açıklıklı köprülerde meydana gelen titreşimlerin azaltılması problemi ele alınmıştır. Problemin çözümü analitik ve sayısal olarak iki farklı yoldan yapılmıştır. AKS kullanımının köprünün dinamik davranışı üzerindeki etkileri incelenmiştir. Sayısal sonuçlar, AKS kullanımının köprülerde titreşimin azaltılmasında önemli bir etkiye sahip olduğunu göstermiştir. Anahtar Kelimeler: Hareketli yük, Ayarlı kütle sönümleyici, Köprü, Titreşim azaltmaIn this paper, the problem of vibration reduction of single span bridges under moving loads using tuned mass dampers (TMDs) is considered. Solution of the problem is obtained by using both analytical and numerical methods. Effect of the use of TMDs on the dynamic behavior of bridges are examined. Numerical results show that the use of TMDs has a great effect on suppression of the bridge vibrations. Keywords: Moving load, Tuned mass damper, Bridge, Vibration suppressio

THE EFFECT OF ACTIVE LEARNING ACTIVITIES ON THE PERFORMANCE AND MOTIVATION OF VIOLA STUDENTS

In this study, it is aimed to determine the effects of active learning activities on viola students' performance and motivation. One group pretest-posttest experimental design was used in the study. The study group consist of 10 students, 7 of them receiving Viola training within the scope of the Individual Instrument course at Gaziosmanpaşa University Fine Arts Education Department Music Education Department and 3 students within the scope of Turkish and Western Music Instruments course at Tokat Fine Arts and Sports High School. During the eight-week practice, with the students in the study group, active learning-based activities which are prepared for the viola training were carried out with students in the study group. In the study, as a means of data collection, by adapting ‘Exam Performance’ dimension of ‘Violin Lesson Performance Form’ to the viola, the ‘Motivation Scale’ part of ‘Motivated Strategies for Learning Questionnaire’ were used. According to the results of the study, it was determined that the activities based on active learning increased viola performance success, and influenced the students' motivation for viola lesson positively

Całkowita histerektomia laparoskopowa metodą pojedynczego nacięcia pępkowego: technika i pierwsze doświadczenia w Turcji

Objectives: The aim of the study is to determine the results of our initial experience of 32 cases who underwent single incision total laparoscopic hysterectomy. Materials and Methods: Thirty-two patients who underwent transumbilical single incision total laparoscopic hysterectomy between March 2009 and February 2011 were reviewed retrospectively at the Department of Obstetrics and Gynecology, Ege University Faculty of Medicine, Izmir, Turkey. Articulating and rigid instruments, 30 degrees 10 mm telescope, SILS™ port and advanced bipolar and mechanical energy modalities were used during the procedure. Duration of surgery, length of hospital stay, mean blood loss and postoperative complications were assessed. Results: Mean age of patients and mean operation time were 48 years (ranged 42-55) and 108 minutes (ranged 80-180), respectively. In all cases vaginal cuff s were closed with either intracorporeal or extracorporeal separate sutures. There were no intraoperative complications. All patients were discharged within 48 hours postoperatively. The mean length of hospital stay and mean blood loss were as 1.6 days (range 1-2) and 45 ml (range 30-100), respectively. Conclusions: Total laparoscopic hysterectomy performed through transumbilical single incision is technically feasible and safe. Development of advanced fl exible instrumentation and visualization platform may facilitate this new operative approach.Cel pracy: Celem tego badania była ocena wyników naszego pierwszego doświadczenia z 32 pacjentkami, które przeszły całkowitą laparoskopową histerektomię metodą pojedynczego nacięcia. Materiał i metoda: Przeanalizowano retrospektywnie trzydzieści dwie pacjentki, które przeszły całkowitą laparoskopową histerektomię metodą pojedynczego nacięcia pępkowego pomiędzy marcem 2009 a lutym 2011, w Oddziale Położniczo-Ginekologicznym, Ege University Faculty of Medicine w Turcji. W trakcie procedury użyto instrumentarium giętkiego i sztywnego, endoskopu o kącie widzenie 30°, 10mm, portu SILSTM i zaawansowanych urządzeń bipolarnych oraz energii mechanicznej. Oceniono czas trwania operacji, długość pobytu w szpitalu, średnią utratę krwi i komplikacje pooperacyjne. Wyniki: Średnia wieku pacjentek wynosiła 48 lat (zakres 42-55), średni czas trwania operacji 108 minut (zakres 80-180). We wszystkich przypadkach mankiet pochwy zeszyto osobnymi szwami wewnątrzbrzusznymi lub zewnątrzbrzusznymi. Nie obserwowano żadnych powikłań w trakcie operacji. Wszystkie pacjentki wypisano do domu w ciągu 48 godzin od operacji. Średni czas pobytu w szpitalu wynosił 1,6 dni (zakres 1-2) a utrata krwi wynosiła 45ml (zakres 30-100). Wnioski: Całkowita laparoskopowa histerektomia metodą pojedynczego nacięcia pępkowego jest technicznie wykonalna i bezpieczna. Ulepszanie zaawansowanego, elastycznego instrumentarium oraz możliwości wizualizacji ułatwiają to nowe podejście operacyjne

Towards harmonizing property measurement standards

Area and volume values of buildings and building parts have been used in many applications including taxation, valuation and land use planning. Many countries maintain a national standard for representing the measurements of floor areas in buildings. The national standards generally use similar basis for measuring building floor areas, in fact, areas specified in national standards often have semantic differences. Therefore, a number of international standards have been developed for harmonizing floor area measurements; however, they also have differences. This study aims at harmonizing the floor areas defined in the international property measurement standards by revealing the semantic relations between them and formalizing them with an ontological approach. To achieve this objective, the international property measurement standards were firstly examined in order to identify semantics, principles and practices in floor area measurements. Then, the obtained information were utilized to develop a set of measurement ontologies for harmonizing the property measurement standards. This paper also investigates 3D data standards to reveal whether they can be utilized for realizing the property measurement standards

Frequency of latent tuberculosis in patients receiving Anti-TNF-Alpha therapy

Setting-Objective: In this study, it was aimed to reveal the incidence of tuberculosis development in patients receiving tumor necrosis factor-alpha (TNF-α) blocker therapy, despite tuberculosis chemoprophylaxis. Design: 520 patients who were receiving anti TNF-α treatment in the last 3 years were evaluated retrospectively. Radiological imaging tuberculin skin test (TST), history of tuberculosis, BCG vaccine, chemoprophylaxis administration, used anti TNF-α drugs were recorded. Results: There were 265(51.0%) of the patients with ankylosing spondylitis (AS), 175(33.7%) with rheumatoid arthritis, 35(6.7%) with Crohn's, 10(1.9%) with ulcerative colitis (UC), 21(4.0%) with psoriatic arthritis, 14(2.7%) with psoriasis vulgaris. In total, 455 (79.6%) patients were given INH prophylaxis. Active tuberculosis development was observed in five patients (4: pulmonary,1: extrapulmonary; 3: UC, 2:AS) who all received anti TNF-α treatment (0.96%), infliximab. Three patients had tuberculosis disease in the 6th month, and the other 2 patients in the 5th and 24th month of their anti TNF-α treatments, and two had 9-month, and 1 had 6-month chemoprophylaxis history. Conclusion: The incidence of tuberculosis development in patients treated with anti TNF-α was found to be higher than the general population. In our country, where tuberculosis is still prevalent, patients receiving Anti TNF-α treatment (especially in-fliximab) should be carefully questioned and examined about tuberculosis

Characteristics of hospitalised COVID-19 patients and parameters associated with severe pneumonia

Background: After the first case of coronavirus disease 2019 (COVID-19) was reported in China in December 2019, it caused a global pandemic, including Turkey. Objectives: The aim of this study was to analyse the characteristics of hospitalised COVID-19 patients and assess the parameters related to severe pneumonia. Methods: Included in the study were hospitalised COVID-19 patients with positive naso-oropharyngeal swabs. Patients’ demographics, admission symptoms, laboratory and radiological findings were recorded retrospectively. Results: Of 1013 patients, 583 were males (57.6%) and 430 were females (42.4%), with a mean age of 53.7 ± 17.9. More than half of the patients had at least one comorbidities, the most common of which were hypertension and diabetes mellitus. Cough (59.8%), fatigue (49.5%) and fever (41.2%) were the most common presenting symptoms. Of the hospitalised COVID-19 patients, 84.9% had pneumonia and 83.5% had typical radiological COVID-19 appearances (94.5%: ground-glass areas). The most common laboratory findings were high C-reactive protein (CRP) (73.6%) and lactate dehydrogenase (LDH) (46.2%) levels, as well as lymphopenia (30.1%). Severe pneumonia was present in 28.1% of COVID-19 patients. Multivariate logistic regression analysis indicated that advanced age, hypotension, anaemia and elevated CRP and LDH serum levels were independent risk factors for the severity of COVID-19 pneumonia (P = .011, .006, .017, .003 and .001, respectively). Conclusion: This study, as one of the first multicentre studies about characteristics of COVID-19 in Turkey, may guide about disease-related parameters and severity of pneumonia. Age, blood pressure, complete blood count and routine biochemical tests (including CRP and LDH) would appear to be important parameters for the evaluation of the severity of COVID-19 pneumonia

A General outlook to Turkish Musical institutions from republican period

Bu çalışmada, Cumhuriyetin ilanından itibaren kurulan, hattaevveliyatı Tanzimat devrine kadar uzanan resmî müzik müesseselerininkuruluş, muhteviyat ve değişimlerine temas edilmiştir. Bu kurumlar, tasnifedilirken kronolojik sıra ve bilhassa kurumların kendi içlerindekikategarizasyonuna dikkat edilmiştir. Buradan hareketle; askerî müzikkurumları, müzik öğretmeni yetiştiren lise, üniversite kurumları, devlet operave baleleri, her nevi konservatuvarlar, Kültür Bakanlığı’na ait birçok müzikorganizasyonları ve Türkiye Radyo Televizyon Kurumuna bağlı müzikkurumları başta olmak üzere birçok müessese; meydana gelişi, ihtiva ettikleriunsurlar ve Türk müzik eğitim-öğretim ve kültür hayatındaki rolü veehemmiyeti bakımından incelenmiştir. Bu inceleme neticesinde, iki asra yakınmazisi olan bu kurumların, birçok anlayış ve idare tarzı değişiklerineuğradığı, ülkenin siyasî, idarî kültür atmosferinin, bu kurumlarda icra edilen,öğretilen ve benimsetilmek istenen müzik türlerine büyük tesiri olduğugörülmüştür. Bu bakımdan, Tanzimat devrinden günümüz Türkiye’sine kadarresmî müzik kurumlarının birçoğuna temas edilen bu çalışmanın, bu devirlerarasındaki müzik kurumları tarih ve perspektifine genel manada bir çerçeveçizerek, ışık tutacağı düşünülmektedir.In this study, we aim to provide informations on self-evolution,development and also content-development of formal musical institutionssince Turkish Republican period which also dates back to the Tanzimat reform period. In reassortment of these institutions, we used chronologicalorder and also self-intra-categorisation of these institutions. Thus, weanalysed military music academies (specifically nco training schools), lyceesthat particularly educates music teacher candidates, state universities, alltypeconservatoires, state opera and ballet houses, musical organisationswhich hierarchically dependent on to the ministry of culture, organisationsthat dependent on to the Turkish Radio Corporation and many of themaccording to its foundational purposes, contents and its role in Turkish musiceducation and music cultural life. As a result, these institutions which alsodates back to approximately two century ago, has been reformed many timesaccording to political standpoint and the cultural perspective of rulers.Furthermore, the educational & teaching curricula and styles also have beeninfluenced due to above-mentioned manners. In this regard, since this studyencompasses a wide period from Tanzimat reform to the current TurkishRepublic, we believe this study will draw a frame and also shed a light on tohistory and official understanding of these music institutions