A study on developing a three-tier concept test on exponential expressions

Kavram yanılgılarını tespit etmenin yollarından biri “Üç aşamalı testler”dir. Bu testlerde birinci aşamada öğrenciden doğru olan cevabı seçmesi istenmektedir. İkinci aşamada yaptığı seçimin açıklamasını yani çözümünü yazması istenmektedir. Üçüncü aşamada ise bu cevaplarından emin olup olmadığını belirtmesi istenmektedir. Üç aşamalı testlerin bir ve iki aşamalı testlere kıyasla öğrencilerin kavram yanılgılarını tespit etmede daha geçerli ve güvenilir olduğu düşünülmektedir. Üslü ifadeler öğrencilerin hata yaptıkları ve güçlük yaşadıkları konulardan biridir. Bu düşünceden hareketle, üslü ifadelerde üç aşamalı kavram testi geliştirme bu çalışmanın amacını oluşturmaktadır. Test kavram yanılgısı yanında öğrencinin bilimsel bilgisini (başarısını), bilgi eksikliğini ve güven eksikliğini de ortaya çıkarmayı amaçlamaktadır. Çalışmada üç aşamadan oluşan 20 maddelik bir kavram testi kullanılmıştır. Test, 2017-2018 eğitim-öğretim yılında dört farklı devlet ortaokulunun sekizinci sınıflarında öğrenim gören toplam 103 öğrenciye uygulanmıştır. Testin geçerliği için uzman görüşüne başvurulmuş, madde analizlerini gerçekleştirmek için, öğrencilerin “%27’lik üst grubu” ile “%27’lik alt grubu” belirlenmiştir. Yapılan analizler sonucunda madde güçlük katsayıları ve madde ayırtedicilik katsayıları tespit edilmiştir. Yapılan bu çalışmalar sonucunda bir madde testten çıkarılmıştır. Daha sonra testin güvenilirliği için istatistiksel analizler yapılmış ve 19 soruluk testin ilk aşaması için güvenirlik katsayısı 0,89; ikinci aşaması için 0,92; üçüncü aşaması için 0,91 olarak bulunmuştur. Çalışma sonunda “Üslü İfadeler Kavram Testinin” güvenilir ve geçerli bir test olduğu kabul edilmiştirOne way to determining the misconceptions is three-stage tests. In these tests, the student is asked to mark the correct answer in the first stage. In the second stage, the option is marked by specifying the justification of the marking. In the third stage, it is required to indicate whether the students make sure of their answers. It is thought that three-stage tests determine students' misconceptions more effectively than one-stage and two-stage tests. Exponential expressions are one of the subjects where students make mistakes and have difficulty. The purpose of this study is to develop a three-stage concept test in exponential expressions. The test was applied to 103 students studying in the eighth grade of four different public middle schools in the 2017-2018 year. The experts’ opinions were consulted for the content and face validity of the test. To perform item analysis, the top 27% of the students and the bottom 27% of the students were determined. As a result of the item analysis, item difficulty indexes and item discrimination indices were determined. As a result of these studies, 1 item was excluded from the test. Then, statistical analyzes were made for construct validity and the reliability coefficient for the first stage of the 19-question test was 0.89, 0.92 for the second stage, for the third stage; it was found as 0.91. At the end of the study, it was accepted that the Exponential Expressions Concept Test is a reliable and valid tes

GÖREV ESANSINDA BUHARLAŞIP KAYNAYAN KİMLİK

Orhan Kemal’in “Murtaza” adlı romanında ana kahraman olan Bekçi Murtaza’nın kendine yabancılaşması ve göreviyle bütünleşmesi sorunu nasıl ele alınmıştır

The place of the oxymetholone in the treatment of aplastic anemia

Bu çalışma, 19-20 Kasım 1981 tarihlerinde İstanbul[Türkiye]'da düzenlenen XVI. Ulusal Hematoloji Kongresi'nde bildiri olarak sunulmuştur.Çalışmamızda, EdinseI Aplastik Anemili 13 hastaya, en az 2 ay süre ile oral yoldan 2,5 mg/ kg/gün dozunda Oxymetholone verildi. Çalışma sonunda 7 hastada (% 54) tam remisyon, 5 hastada (% 38.4) kısmi remisyon sağlanmış, 1 hastada ( % 7.9) ise hiç cevap alınamamıştır. Tam remisyon sağlanan hastalardan 4'ü 7-23 aydır ilaçsız olarak takip edilmekte olup, 3 ünde ise azaltılmış dozlarda oxymetholone tedavisine devam edilmektedir. Tedavi sırasında .5 hastada serum transaminazlarında yükselme, 2 hastada sarılık , 2 hastada amenore ve 1 'er hastada da kas krampları , virilizasyon ve ahne görülmüştür. Bu yan etkiler ilacın geçici olarak kesilmesi veya dozunun azaltılması ile tamamen kaybolmuştur.In our study , peros 2.5 mg/kg/day Oxymetholone were given lo thirteen patients with acquired aplastic anemia for minimum two months. At the end of the treatment complete remission was achieved in 7 patient (% 54 ), partial remis·sion in .5 patients (% 38.4) and no response in one (% 7.9). In 4 patients with complete remission therapy was ceased for a period of 7-23 months, and in 3 patient treatment was continued in low doses. The side effects observed during therapy were: rise in transaminase levels (5 cases), Jaundice (2 cases), amenorrhea (2 cases), muscle cramps, virilization and acnea (I case). All these side effects were subsided after the reduction or cessation of the therapy

Long-term outcomes in patients with West syndrome: An outpatient clinical study

AbstractPurposeNearly half of all patients with seizure onset in the first year of life suffer from West syndrome (WS). The prognosis of epilepsy and psychosocial outcomes in children with WS are variable. This study was performed to examine the factors influencing the outcome of this patient population.MethodsA total of 109 patients with WS followed up regularly for at least 3 years were included in the study. Relevant clinical, laboratory, and imaging data were collected.ResultsThe male/female ratio was 65/44 (59.6%/40.4%). The mean age at onset of infantile spasm (IS) was 6±6 (1–36) months. With regard to neuro-developmental and social conditions during the final evaluation, 29.4% of the patients were socially dependent on caregivers, 61.8% needed assistance, and 8.8% were normal. Among the patients, 5.9% were free of epilepsy and antiepileptic drugs (AED) for at least 2 years, 49.0% had no seizures with AEDs, and 45.1% had uncontrollable seizures. Parameters with significant negative effects on the long-term outcomes included symptomatic etiology, presence of developmental retardation before the onset of IS, persistence of active epilepsy, and male gender.ConclusionIn this study, 37 (33.9%) patients had severe consequences as a result of WS. The majority of the rest could cope with daily life with varying degrees of assistance. Eight percent of the patients had a normal development. These results draw attention to the two-thirds of patients with WS who have the chance of an acceptable quality of life (QoL) with early diagnosis and therapeutic measures

Patterns of intergenerational mobility of the old and new middle classes

It has often been proposed that new cleavages have emerged within the middle class. In this paper, we examine the distinction between social and cultural specialists and technocrats, and investigate whether these new and old middle class fractions are differentiated by their patterns of intergenerational mobility. To what extent do these newly distinguished middle class fractions have specific external and internal intergenerational mobility patterns? And to what extent have mobility boundaries between them been rising over time? To answer these questions, we use 47 Dutch national population sample surveys with detailed occupation codes collected between 1970 and 2006 (N = 60,978). Our analyses of internal and external homogeneity show that the middle class fractions each have characteristic mobility and immobility patterns and therefore a necessary condition is satisfied to declare them as separate classes. Furthermore, in the early periods, the social and cultural specialists were differentiated by a high level of immobility but in the later periods, the distance between the old and new middle classes has decreased significantly

Understanding the religious behaviour of Muslims in the Netherlands and the UK

The position of Muslims in Western societies is the subject of intense study and debate. However, remarkably little attention has been paid to the practice of European Muslims and how Muslim religiosity relates to conventional measures of social and economic integration. In this paper we draw on theories of secularization, assimilation, revitalization and integration to explore the correlates of attendance at religious meetings for Muslims of different backgrounds in the Netherlands and the UK. We conclude that patterns of religiosity and secularisation cannot be generalised across national contexts