Shaking table study of masonry buildings with reinforced plaster

U radu je prikazano određivanje seizmičkog ponašanja zidanih građevina sa žbukom od armiranog morta, pri čemu je naglasak stavljen na promjenu odziva konstrukcije kada se umjesto obične žbuke koristi žbuka armirana polipropilenom i čelikom. Na vibracijskom stolu analizirana je otpornost na seizmičko opterećenje jednokatnih, jednorasponskih zidanih građevina. U toku ispitivanja, određeni su prirodni periodi, spektri ubrzanja odziva i spektar ovisnosti zidanih građevina. Za ispitane su građevine izrađeni i modeli metodom konačnih elemenata te su rezultati proračuna uspoređeni s rezultatima ispitivanja.The objective of this study is to determine seismic behaviour of masonry buildings with reinforced plaster mortar, with a particular focus on the modification of structural response due to application of the polypropylene and steel reinforced plaster, as compared to an ordinary type of plaster. The resistance of one-storey single-span masonry buildings subjected to seismic load on the shaking table is investigated in the study. Experimental results revealed natural periods, response acceleration spectrums, and spectrum interactions of masonry buildings. In addition, finite element models of test buildings were established, and their results were compared with those obtained during experimental stud

Development of Attitude Scale Towards Mobile Learning

Bu çalışma, mobil öğrenmeye yönelik tutum ölçeği geliştirmek amacı ile gerçekleştirilmiştir. Ölçeğin geliştirilme sürecinde öncelikle literatür taraması yapılmıştır. Daha sonra mobil öğrenme hakkında 78 öğrenciye 7 adet açık uçlu soru sorulmuştur. Elde edilen veriler ve uzman görüşlerinden yararlanılarak 57 maddelik madde havuzu oluşturulmuştur. Kapsam geçerliliğini sağlamak amacıyla uzman görüşlerine başvurulmuştur. Uzmanların görüş ve önerileri doğrultusunda düzeltmeler yapılmıştır. Tutum maddesi olmayan maddeler ve birbirine benzer maddeler ölçekten çıkarılmıştır. Yapılan düzeltmelerden sonra madde havuzu 52 maddeye düşürülmüştür. Oluşturulan maddeler beşli likert tipinde olup, tamamen katılıyorum (5), katılıyorum (4), kısmen katılıyorum (3), katılmıyorum (2), tamamen katılmıyorum (1) şeklinde derecelendirilmiştir. Pilot uygulama, 2013-2014 güz yarıyılında Dokuz Eylül Üniversitesi Buca Eğitim Fakültesi ve Anadolu Üniversitesi Eğitim Fakültesi'nin farklı bölümlerinde öğrenim gören toplam 326 öğrenci ile gerçekleştirilmiştir. KMO değerini .936 olarak bulunmuştur. Faktör analizleri sonucunda 21 ölçek maddesinin 4 faktörde toplandığı ve ölçeğin toplam varyansın % 51.116'sını açıkladığı belirlenmiştir. Ölçeğe madde yükü .40'dan yüksek olan 45 madde dahil edilmiştir. Ölçeğin dört faktör ve 45 maddeden oluşan son halinde yer alan maddelerin yükleri .82 ile .40 arasında yer almaktadır. Ölçeğin son haline ait Cronbach Alfa güvenirlik katsayısı .950 hesaplanmış ve yüksek derecede güvenir olarak görülmüştür. Ölçekte yer alan tüm maddelerin alt üst grup ortalamalarına dayalı madde analizi sonuçları anlamlı derecede ayırt edici bulunmuştur (p<.05). Bu araştırmanın lisans öğrencileri ile mobil öğrenme alanında yapılacak araştırmalara katkı sağlayacağı düşünülmektedirThis present study was conducted with the purpose of developing an attitude scale towards mobile learning. Related literature was reviewed primarily in the process of developing the scale. Then by seven open-ended questions related with mobile learning were asked to 78 students. Taking the advantages of the data collected and the expert opinions, an item pool including 57 items was developed. In order to insure the content validity, the experts' opinions were used. In accordance with the recommendations and the opinions of the experts, the items were re-evaluated. The items which did not include attitude expression or which were alike were removed from the scale item pool. After making the revisions, the item pool included 52 items. These items created as five-point Likert-type and rated as totally agree (5), agree (4), partially agree (3), disagree (2), totally disagree (1). The pilot study was conducted with 326 undergraduate students, who studies in different departments in Dokuz Eyl&uuml;l University, Buca Faculty of Education and Anadolu University, Faculty of Education, in the first term of the 2013-2014 academic year. KMO value found as .936. 21 items of the scale grouped by four factors and explain the %51.116 of the total variance of the scale is determined in the result of factor analysis. 45 items which item load is higher than .40 were included to scale. The last version of the scale consists four factors and 45 items which loadings are between .82 and .40. The Cronbach's alpha internal consistency coefficient which belongs the last version of the scale was computed as .950 and was seen as very highly reliable. The item analysis based on the difference between the upper and lower group results of the all items in the scale found significantly distinguished (p&lt;.05). This research is expected to contribute researchs which will be held in the field of mobile learning with undergraduate students

ÖĞRETMEN SORUNLARI -ÇANAKKALE İLİ ÖRNEĞİ-

Bu araştırma Çanakkale ilinde görev yapan okul öncesi öğretmenleri, sınıf öğretmenleri ve branş öğretmenlerinin yaşadıkları sorunları ortaya çıkarmayı amaçlamaktadır. Bu doğrultuda Milli Eğitim Bakanlığı tarafından düzenlene hizmet içi eğitim faaliyetlerine katılan 220 öğretmenden 99'una 15 sorundan oluşan bir ölçek sunulmuş ve bu sorunlardan en çok rahatsız oldukları 4 tanesini seçmeleri istenmiştir. Böylece öğretmenler tarafından toplam 396 sorun seçimi yapılmıştır. Bu sorunlardan frekansı en çok olanlar incelendiğinde öğretmenler için en rahatsız edici sorunların başında \"gelirin düşük olması\", \"toplumdaki saygınlığının düşmesi\" ile \"sık değişen programlar ve mevzuatlar\" ın geldiği ortaya çıkmıştır. Frekansı en az olan sorunlar incelendiğinde ise \"norm kadro sorunları\", \"performansın takdir edilmemesi\" ile \"çalışma saatlerinin fazlalığı\" sorunlarının öğretmenleri en az rahatsız eden sorunlardan olduğu görülmüştü

Seismic Assessment in a Historical Masonry Minaret by Linear and Non-linear Seismic Analyses

Operational Modal Analysis (OMA) method is frequently used in order to determine dynamical properties of historical masonry structures. In this study, damage pattern of historical Alaca minaret which is selected as application is investigated under different ground motions by updating finite element models (FEM) depending on operational modal analysis test. Initial Finite element model was prepared in ABAQUS V10 program and numerical dynamic characteristics of minaret were determined. In addition, experimental dynamic properties of minaret were provided by operational modal analysis. Initial numerical model of brick masonry structure was calibrated via OMA method. Then, linear and non-linear seismic analyses of calibrated FEM of historical minaret were performed by using different earthquakes acceleration records that occurred in Turkey. Concrete Damage Plasticity model was taken into account in non-linear seismic analyses. As a result of the analyses, it is concluded that the stresses obtained with linear analyses aren’t as realistic as the non-linear analyses results and the earthquakes can cause some damages in the minaret. &nbsp

An Analysis of the Impact of the Syrian Crisis on Turkey’s Politic-Military, Social and Economic Security

This study analyzes how the ongoing Syrian Crisis has affected Turkey’s security. It starts with an overview of recent developments in the Middle East in general and in Syria specifically. It then examines the political, military, social, and economic effects of the Syrian Crisis for Turkey’s security. It concludes that the Syrian Crisis represents Turkey’s most challenging security problem since the end of the Second World War as it has had many profound impacts on the country

Nonlinearities in Economic Globalization Effects on the Environment: New Insights from a Panel Smooth Transition Regression Model

AbstractThis study aimed to estimate the impact of economic globalization on environmental quality and examine the role of renewable energy production (REP) in this impact. For this purpose, the annual data of 1976–2021, which is the longest possible period, of the top 5 countries (Sweden, Switzerland, Norway, France, and Denmark) that show the best performance according to the Global Green Economy Index 2022 report, were used. These countries were chosen due to their high performance in green economy integration; and thus, it was considered that this research could provide reference results for other countries. In order to achieve this, the panel smooth transition regression model was applied to the dataset. This nonlinear approach divides the series into homogeneous regimes depending on the threshold variable and allows us to make regime-specific interpretations. As a result, this study, in which REP was defined as the threshold variable, has shown that there is a two-regime nonlinear relationship between environmental quality and economic globalization. According to the findings, economic globalization caused an increase in environmental degradation in the first regime, which had low REP. However, this impact was eliminated in the second regime, where REP was high

Turner syndrome and associated problems in turkish children: A multicenter study

Objective: Turner syndrome (TS) is a chromosomal disorder caused by complete or partial X chromosome monosomy that manifests various clinical features depending on the karyotype and on the genetic background of affected girls. This study aimed to systematically investigate the key clinical features of TS in relationship to karyotype in a large pediatric Turkish patient population. Methods: Our retrospective study included 842 karyotype-proven TS patients aged 0-18 years who were evaluated in 35 different centers in Turkey in the years 2013-2014. Results: The most common karyotype was 45,X (50.7%), followed by 45,X/46,XX (10.8%), 46,X,i(Xq) (10.1%) and 45,X/46,X,i(Xq) (9.5%). Mean age at diagnosis was 10.2±4.4 years. The most common presenting complaints were short stature and delayed puberty. Among patients diagnosed before age one year, the ratio of karyotype 45,X was significantly higher than that of other karyotype groups. Cardiac defects (bicuspid aortic valve, coarctation of the aorta and aortic stenosi) were the most common congenital anomalies, occurring in 25% of the TS cases. This was followed by urinary system anomalies (horseshoe kidney, double collector duct system and renal rotation) detected in 16.3%. Hashimoto’s thyroiditis was found in 11.1% of patients, gastrointestinal abnormalities in 8.9%, ear nose and throat problems in 22.6%, dermatologic problems in 21.8% and osteoporosis in 15.3%. Learning difficulties and/or psychosocial problems were encountered in 39.1%. Insulin resistance and impaired fasting glucose were detected in 3.4% and 2.2%, respectively. Dyslipidemia prevalence was 11.4%. Conclusion: This comprehensive study systematically evaluated the largest group of karyotype-proven TS girls to date. The karyotype distribution, congenital anomaly and comorbidity profile closely parallel that from other countries and support the need for close medical surveillance of these complex patients throughout their lifespan. © Journal of Clinical Research in Pediatric Endocrinology

Coexistence of left ventricular noncompaction and double-orifice mitral valve in a patient with congestive heart failure

Left ventricular noncompaction (LVNC) is a rare cardiomyopathy. It usually presents with ventricular dysfunction, thromboembolic events and arrhythmias. An asymptomatic clinical course is also possible. LVNC is frequently associated with other congenital heart diseases including heart valve abnormalities. The coexistence of LVNC with double-orifice mitral valve was observed rarely. The presence of such coexistence in a patient presented with heart failure in the newborn period is reported herein because of its rarity

Atypical presentations of SSPE: a clinical study in four cases

Subacute sclerosing panencephalitis (SSPE) is a progressive, fatal disease of the central nervous system caused by a persistent measles virus. It is clinically characterized by insidious onset of intellectual deterioration and behavioral changes followed by myoclonias and eventually complete neurologic deterioration. The diagnosis is based on characteristic clinical features, periodic electroencephalography (EEG) complexes of high slow waves and increased antibody titer against measles in cerebrospinal fluid. Here, we report four SSPE cases, two of whom manifested with hemiparesis; in the third and fourth cases, cerebellar ataxia and acute encephalopathy with focal seizures were the presenting symptoms at the onset of disease, respectively. The typical periodic EEG complexes in our patients led to the diagnosis of SSPE. Our findings show that SSPE should be considered in the differential diagnosis of hemiparesis, cerebellar ataxia and acute encephalopathy, and highlight the diagnostic significance of EEG in unidentified cases

Primary school teachers’ views on constructive classroom management

Behavioural teaching programmes that had long been used in Turkey began changing in 2005. In a significant development, new programmes based on constructivism have come to the fore. The adaptation of teachers in this transitional process and their internalization of this new approach have been of utmost importance for the success of the programme. Difficulties faced by experienced primary school teachers in particular have become a serious matter that should be qualitatively addressed. This study aimed to reveal the views of experienced primary school teachers (175) about constructive classroom management. Interviews were employed to do so. The study revealed that a large majority of the interviewed teachers considered themselves to be successful at classroom management (thanks to factors like experience, close contact with students, their affection for students, etc.), while almost half of the teachers thought that classroom management had been much easier in pre-2005 teaching programmes. The results also exposed disturbing behaviours, among them students fighting, the use of improper language, disrupting in-class teaching processes and irrelevant talking among students. The coping techniques adopted for these behaviours were warnings, punishment and more enjoyable teaching that incorporated a range of different activities. © 2016, International Electronic Journal of Elementary Education. All rights reserved