155 research outputs found
The effect of classroom management skills of elementary school teachers on undesirable discipline behaviour of students
AbstractA majority of disciplinary incidents that take place in the classroom originate from the insufficiency of teachers’ classroom management skills. The aim of this study is to assess the effect of elementary school teachers’ classroom management skills on the discipline behaviour of students.The research was conducted as a survey with 450 teachers commissioned in the city of Antalya. Data were analysed employing t-test with regards to the significance of regression coefficients. A significant relation between the dimensions regarding classroom management skills of the teachers and disciplinary behaviour of the students was observed. It was seen that there was a positive relation between all the dimensions of students’ disciplinary behaviour and teachers’ first, second, third, fourth and sixth dimensions regarding classroom management; and a negative one with the fifth dimension. It is observed that the dimensions regarding teachers’ classroom management skills are important predictors in students’ disciplinary behaviour
Opinions Regarding the Effectiveness of the Educational Activities within which Education Supervisors Are Involved
In this study, it was aimed to determine the views of the education inspectors about the in-service training (IST) they attended and the problems they experience during IST. Quantitative and qualitative design were used together in the study. The data were collected through the In-Service Training Assessment Scale (ISTA) and an open-ended questionnaire. The data obtained from 300 education inspectors who filled in the scale (working at 10 cities) and from 100 education inspectors among them who answered open-ended questions were evaluated. According to the results of the research, while the inspectors stated at “A Little” level, their IST needs have been determined, IST has been planned, the activities of IST have been evaluated and their IST needs have been met, they agreed “Moderately” that running process of IST is effective. The views of the education inspector differed in terms of age and graduation variables. Findings from qualitative research parallel with findings from quantitative data. Educational inspectors pointed out problems about the suitability of the course centers, utility of IST activities, the activities of the Ministry of National Education (MNE), the teaching staff in these activities and the number of IST. According to the results of the research, it could be said that the IST studies on education inspectors were not sufficient
BDI, Gold Price and Economic Growth
AbstractSince its establishment, the Baltic Dry Index has become one of the foremost indicators on the cost of shipping as well as an important barometer on the volume of worldwide trade and manufacturing activity. In this paper, the MSIH(3)-VAR(3) model is selected to analyse the relationship between BDI, Gold prices and economic growth for the United States. The BDI, gold prices and GDP are cointegrated for the United States. The crisis regime tends to last 1 years on average, while Regime 2 is comparatively more persistent with 6.46 years. Finally, Regime 3 which corresponds to high growth tends to last 1.16 years, on average. The crisis regime of the economy is the most persistent regime in the US. Thus, the BDI and gold prices can be used as an indicator of crisis in GDP growth for the United States
Genelleştirilmiş Riesz fark dizi uzaylarının bazı topolojik ve geometrik özellikleri
06.03.2018 tarihli ve 30352 sayılı Resmi Gazetede yayımlanan “Yükseköğretim Kanunu İle Bazı Kanun Ve Kanun Hükmünde Kararnamelerde Değişiklik Yapılması Hakkında Kanun” ile 18.06.2018 tarihli “Lisansüstü Tezlerin Elektronik Ortamda Toplanması, Düzenlenmesi ve Erişime Açılmasına İlişkin Yönerge” gereğince tam metin erişime açılmıştır.Üç bölüm olarak hazırlanan bu tezin birinci bölümünde daha sonraki bölümlerde kullanılacak olan bazı temel tanım ve teoremler verildi.İkinci bölümde Riesz ve B^m matrisi yardımıyla tanımlanan r^q(p,B^m) dizi uzayı tanımlandı. Tanımlanan bu dizi uzayının tam paranormlu lineer metrik uzay olduğu ve l(p) uzayı ile lineer izomorfik olduğu gösterildi. r^q(p,B^m) dizi uzayının Schauder bazı alfa ve beta dualleri bulundu. Ayrıca beta geometrik özelliği incelendi.Üçüncü bölümde (r^q(p,B^m)sonsuz, r^q(p,B^m)yakınsak ve r^q(p,B^m)sıfıra yakınsak) dizi uzayları tanımlandı. Tanımlanan bu dizi uzaylarının tam paranormlu lineer metrik uzay olduğu ve sırasıyla l(p)sonsuz, c(p) ve c(p)^0 uzaylarına lineer izomorfik olduğu gösterildi. Bu dizi uzaylarının alfa, beta ve gama dualleri bulundu. r^q(p,B^m)yakınsak ve r^q(p,B^m)sıfıra yakınsak dizi uzaylarının Schauder bazları verildi.This thesis consists of four chapters. In the first chapter, some fundamental definitions and theorems will be used in the later chapters were given.In the second chapter r^q(p,B^m) sequence space defined by Riesz matrix and B^m was introduced. It was shown that this sequence space was total paranormed linear metric space and linear isomorphic to l(p). Schauder base and alpha ve beta duals of r^q(p,B^m) sequence space were defined. Besides, beta geometric property of this sequence space was examined.In the third chapter (r^q(p,B^m)infinity, r^q(p,B^m)convergence and r^q(p,B^m)convergence to 0 ) sequence spaces were defined. It was shown that these sequence spaces were total paranormed linear metric spaces and linear isomorphic to l(p)infinity, c(p) and c(p)^0, respectively. Alpha, beta and gamma duals of these sequence spaces were investigated. Also Schauder bases of (r^q(p,B^m)convergence and r^q(p,B^m)convergence to 0) sequence spaces were given
Effectiveness of defibrotide in the prevention of hepatic venooclusive disease among adult patients receiving allogeneic hematopoietic cell transplantation: A retrospective single center experience
Hepatic veno-occlusive disease/sinusoidal obstruction syndrome (VOD/SOS) is one of the most life-threatening early complications following hematopoietic cell transplantation (HCT). Due to the high mortality rate of severe VOD/SOS accompanied with multiorgan failure, there is a great interest in preventive strategies. The efficacy of defibrotide (DF) on the prevention of VOD/SOS has been clearly shown in high-risk pediatric patients, but evidence-based data on adults is scarce. In this report, we aimed to assess the impact of DF on the incidence of VOD/SOS in our center by posttransplant day 30 among patients who were treated with allogeneic HCT (allo-HCT). The study included a total of 56 patiens (28 males, 28 females). The median age of the study cohort was 43 (20-68). The daily dose of DF was 10 mg/kg and 25 mg/kg in 53 (94.6 %) and 3 (5.3 %) patients, respectively. Patients also recieved oral ursodeoxycolic acid (UDCA) 250 mg three-times daily started with conditioning until D + 90. Twenty-three (41.1 %) patients had at least one major EBMT-defined risk factor for development of VOD/SOS. One patient who belonged to a very high-risk group (with at least two major risk factors) developed very-severe VOD/SOS at posttransplant D + 20 and died as a result of multiorgan failure. The cumulative incidence of VOD/SOS at D + 30 was 1.9 %. Our findings indicate that 10 mg/kg daily intravenous DF combined with UDCA is quite effective in prevention of VOD/SOS in patients who underwent first allo-HSCT
Comparison of ITRF2014 station coordinate input time series of DORIS, VLBI and GNSS
In this paper station coordinate time series from three space geodesy techniques that have contributed to the realization of the International Terrestrial Reference Frame 2014 (ITRF2014) are compared. In particular the height component time series extracted from official combined intra-technique solutions submitted for ITRF2014 by DORIS, VLBI and GNSS Combination Centers have been investigated. The main goal of this study is to assess the level of agreement among these three space geodetic techniques. A novel analytic method, modeling time series as discrete-time Markov processes, is presented and applied to the compared time series. The analysis method has proven to be particularly suited to obtain quasi-cyclostationary residuals which are an important property to carry out a reliable harmonic analysis. We looked for common signatures among the three techniques. Frequencies and amplitudes of the detected signals have been reported along with their percentage of incidence. Our comparison shows that two of the estimated signals, having one-year and 14 days periods, are common to all the techniques. Different hypotheses on the nature of the signal having a period of 14 days are presented. As a final check we have compared the estimated velocities and their standard deviations (STD) for the sites that co-located the VLBI, GNSS and DORIS stations, obtaining a good agreement among the three techniques both in the horizontal (1.0 mm/yr mean STD) and in the vertical (0.7 mm/yr mean STD) component, although some sites show larger STDs, mainly due to lack of data, different data spans or noisy observations
Modeling mutant phenotypes and oscillatory dynamics in the Saccharomyces cerevisiae cAMP-PKA pathway
Background The cyclic AMP-Protein Kinase A (cAMP-PKA) pathway is an evolutionarily conserved signal transduction mechanism that regulates cellular growth and differentiation in animals and fungi. We present a mathematical model that recapitulates the short-term and long-term dynamics of this pathway in the budding yeast, Saccharomyces cerevisiae. Our model is aimed at recapitulating the dynamics of cAMP signaling for wild-type cells as well as single (pde1Δ and pde2Δ) and double (pde1Δpde2Δ) phosphodiesterase mutants. Results Our model focuses on PKA-mediated negative feedback on the activity of phosphodiesterases and the Ras branch of the cAMP-PKA pathway. We show that both of these types of negative feedback are required to reproduce the wild-type signaling behavior that occurs on both short and long time scales, as well as the the observed responses of phosphodiesterase mutants. A novel feature of our model is that, for a wide range of parameters, it predicts that intracellular cAMP concentrations should exhibit decaying oscillatory dynamics in their approach to steady state following glucose stimulation. Experimental measurements of cAMP levels in two genetic backgrounds of S. cerevisiae confirmed the presence of decaying cAMP oscillations as predicted by the model. Conclusions Our model of the cAMP-PKA pathway provides new insights into how yeast respond to alterations in their nutrient environment. Because the model has both predictive and explanatory power it will serve as a foundation for future mathematical and experimental studies of this important signaling network
Deniz-demir yolu uluslararası kombine yük taşımacılığı operasyonları için karar destek sistemi
Kombine taşımacılık, diğer bir isimle çok türlü taşımacılık, uluslararası yük taşıma zincirinde genellikle tek tip taşıma türü olan kara yolu yerine, en az iki farklı taşıma türünün birleştirilmesi ile yapılan taşımacılığı ifade etmektedir. Literatürde kombine taşımacılık ile yüklerin nasıl daha etkili ve verimli taşınacağı araştırılmış, avantajları ile dezavantajları irdelenmiş olmakla beraber fiyatlandırma politikası ayrıntılı incelenmemiştir. Günümüzde uygulanan kombine taşımacılıkta esasen sabit fiyat politikası güdülmektedir. Ancak, hava yolu taşımacılığı ve otel yönetimi gibi sektörlerde görülen dinamik fiyatlandırma yaklaşımlarının kombine taşımacılık operasyonel planlamasında uygulanmasıyla geliri artırmak mümkün olabilmektedir.
Bu çalışmada, gelir yönetimine göre uluslararası deniz-demir yolu kombine yük taşımacılığı senkronize operasyonları için web tabanlı bir karar destek sistemi (KDS) sunulmuştur. Ship2Rail adlı projenin operasyonel planlama çıktılarını kullanıcıya sunmak amaçlı hazırlanan bu web tabanlı platformu oluşturan kullanıcı arayüzü, mantık arayüzü ve veri tabanlarını içeren bir prototip tasarımı betimlenmiştir. Buna temel teşkil eden ER modeli (Entitiy-Relationship Diagram, Varlık-Bağıntı Modeli) sunulmuş, veri tabanı tasarımı için kullanılan veri modelinin çalışma prensipleri açıklanmıştır. Ayrıca, talebe göre sabit ve dinamik fiyatlandırma politikalarını içeren senaryolarda gözetilen, farklılaşan unsurlar vurgulanmıştır
Trend analysis of relative sea level changes in the Aegean sea with copula functions
İklim değişikliği başta olmak üzere birçok nedenden dolayı global ölçekte deniz seviyesinde meydana gelen artışlar, kıyı ekosistemlerini
etkilemekte ve kıyı yerleşimlerini tehdit etmektedir. Jeodezik açıdan uzun dönemli deniz seviyesi gözlemleri düşey kontrol ağlarının
datumunun belirlenmesi açısından önemlidir. İstatistik, ekonomi, aktüerya analizi, meteoroloji, hidroloji gibi birçok alanda farklı
değişkenler arasındaki ilişkileri araştırmak için kullanılan Kapula fonksiyonları değişkenlerin ve hatalarının dağılımından
etkilenmeyen, lineer ve lineer olmayan ilişkileri yansıtan, lokal bağımlılıkları da gösterebilen korelasyon yapısıyla lineer korelasyon
katsayısına göre oldukça elverişli bir korelasyon yapısı sunabilmektedir. Bu çalışmada, Ege Denizi kıyısında bulunan 5 mareograf
istasyonundan elde edilen 1990-2008 yılları arasında aylık deniz seviyesi ve deniz yüzey sıcaklığı ortalamaları verileri ile kıyılardaki
uzun dönemli bağıl deniz seviyesi değişimleri ve bu değişimlerin deniz yüzey sıcaklığı ile ilişkisi Kapula Fonksiyonları ile incelenmiştir.
Bu çalışma kapsamında ilk defa sunulan kapula temelli trend analiz yöntemi ile deniz seviyesi ve deniz yüzey sıcaklığı zaman serilerinde
trend analizleri gerçekleştirilerek elde edilen trendler regresyon modelleri ile karşılaştırılmıştır. Ege denizinde 1990-1998 yılları
arasında deniz seviyesinin oldukça hızlı bir şekilde arttığı, 1999-2008 yılları arasında ise deniz seviyesinin düştüğü görülmüştür. 1990-
1998 yılları arasında deniz seviyelerindeki artışın deniz yüzey sıcaklıklarındaki sıcaklık artışlarından kaynaklandığı, 1999-2008 yılları
arasındaki deniz seviyesindeki azalmaların da deniz yüzey sıcaklıklarındaki soğumalardan kaynaklandığı değerlendirilmiştir.Nowadays, it is known that for many reasons such as climate change, the sea level has globally increased. Sea level rises affect coastal
ecosystems and threaten coastal settlements. From a geodetic point of view, long term sea level observations are important in terms of
determining the datum of vertical control networks. Copula functions, which are frequently used in many fields such as statistics,
economics, actuarial analysis, meteorology and hydrology, have a correlation structure that reflects linear and nonlinear relationships
and can show local dependencies. In this study, relative sea level changes in the Aegean Sea and the relationship of these changes with
sea surface temperature were investigated by using a Copula based trend analysis method. The sea level data used in the study were
obtained from 5 tide – gauge stations in the Aegean Sea. Copula based trend analysis was performed in sea level and sea surface
temperature time series. The usability of Copula based trend analysis was investigated by comparing it with regression models. As a
result, it was observed that although the relative sea level increased rapidly in the Aegean Sea between 1990 and 1998, it decreased
between 1999 and 2008. Thanks to the Copula-based trend analysis applied in the sea surface temperature time series, it was observed
that the relative sea level rise was caused by the increase in sea surface temperatures between 1990 and 1998. It was determined that
sea level decreases between 1999 and 2008 were caused by the decrease in sea surface temperatures
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