An Exploratory Study of Presenteeism in Turkish Context

Presenteeism has been an emerging research era, where many exploratory questions may be produced. Literature is not very definitive for the conceptualization of the construct in many aspects. There are few studies about the reasons, measurement approaches and positive outcomes of the concept. Studies conducted in Turkish context are even fewer. Paper combines two studies; first study aims to investigate different conceptualizations, possible reasons, negative and positive outcomes of presenteeism. The purpose of the second study is to find out how those concepts structure and relate to each other. Findings provide useful insights for reasons, outcomes and criteria of presenteeism. They also indicate different conceptualization of the concept and there are significant relationships between variables according to the research.   

Education practices of national education ministers (1999-2011)

Adnan Menderes Üniversitesi Sosyal Bilimler Enstitüsü İlköğretim Sınıf Öğretmenliği Ana Bilim Dalında Yüksek Lisans Tezi olarak hazırlanan bu çalışmanın konusu “Milli Eğitim Bakanları ve Eğitim İcraatları (1999-2011)”dir. İncelediğimiz dönemde 5 hükümet kurulmuş ve 5 Milli Eğitim Bakanı görev yapmıştır. Çalışma üç ana bölümden oluşmaktadır. I. Bölümde, araştırmanın amacı, önemi, sınırlılıkları ve yöntemi verilerek, konu ile ilgili kavramlar tanımlanmış ve açıklanmıştır. II. Bölümde, kurulan hükümetlerde eğitim, parti programlarında eğitim ile 1999-2011 yılları arasında görev yapan Milli Eğitim Bakanlarının eğitim konusunda yaptıkları çalışmalar sunulmuştur. III. Bölümde, değerlendirme, yorum, sonuç ve öneriler yer almıştır.The subject matter of this masters thesis prepared in Adnan Menderes Social Sciences Institute of Elementary Education Social Studies Education program is the national education ministers’s educational works which were done between 1999-2011. 5 governments are established and 5 national education ministers worked between 1999-2011 period. Therefore, this study was concentrated on this term. This study has three main chapters. In chapter I, study’s aim, limitations and method have been given and the concept of study has been explained. In chapter II, education in which was established governments, education in political parties program and the national education ministers’s educational works which is done between the year of 1999-2011, have been explained. Chapter III dealth with evaluation, comments and results, some advices have also been given

Ostrowski’s fourth-order iterative method speedily solves cubic equations of state

AbstractPressure–volume–temperature (P–V–T) data are required in simulating chemical plants because the latter usually involve production, separation, transportation, and storage of fluids. In the absence of actual experimental data, the pertinent mathematical model must rely on phase behaviour prediction by the so-called equations of state (EOS). When the plant model is a combination of differential and algebraic equations, simulation generally relies on numerical integration which proceeds in a piecewise fashion unless an approximate solution is needed at a single point. Needless to say, the constituent algebraic equations must be efficiently re-solved before each update of derivatives. Now, Ostrowski’s fourth-order iterative technique is a partial substitution variant of Newton’s popular second-order method. Although simple and powerful, this two-point variant has been utilised very little since its publication over forty years ago. After a brief introduction to cubic equations of state and their solution, this paper solves five of them. The results clearly demonstrate the superiority of Ostrowski’s method over Newton’s, Halley’s, and Chebyshev’s solvers

İstatiksel Tasarım Yöntemi Kullanılarak İnsan Kalça Ekleminin Mekanik Davranışının Belirlenmesi

Konferans Bildirisi -- Teorik ve Uygulamalı Mekanik Türk Milli Komitesi, 2015Conference Paper -- Theoretical and Applied Mechanical Turkish National Committee, 2015Bu çalışmada protezli insan kalça ekleminin mekanik davranışı istatistik olarak tasarlanmış sonlu elemanlar yöntemi (SEY) kullanılarak incelenmiştir. Çalışma kapsamında Charnley ve Hipokrat isimli 2 farklı tip çimentolu protez tam kalça yenileme ameliyatının (THA) mekanik davranışını ve ameliyat sonrası kemik-protez adaptasyonunu tahmin etmek için kullanılmıştır. İki farklı yükleme durumu olarak noktasal ve yüzeysel kas ve kalça temas kuvvetleri yürüme ve merdiven çıkma hareketleri için çimentolu THA’lı kalça eklemine uygulanmıştır. Sonlu elemanlar modeli ve analizleri, bu hareket ve protezleri dikkate alan 23 faktöriyel tasarım metoduna göre oluşturulmuştur. Sonlu elemanlar analizlerinde kemiğin katmanları olan kortikal ve trabeküler kemiklerde, protezde ve protezi kemiğe bağlamada kullanılan çimentoda oluşan maksimum von Mises gerilme değerleri belirlenmiştir. Bu verilerin istatistik analizi varyans analiziyle gözlemlenen değerler üzerinde ana faktörlerin ilişkisini ve katkısını değerlendirmede kullanılmıştır. Bu istatistik çalışma sonucunda çimentolu THA uygulamasından sonra bileşenlerin maksimum von-Mises gerilmelerinin ana faktörler ve ikili etkilerin büyük çoğunluğunda önemli ölçüde farklılıklar gösterdiği tespit edilmiştir. Anahtar Kelimeler: Biyomekanik, Kalça Eklemi, Kalça Protezi, Sonlu Elemanlar Yöntemi, Faktöriyel Tasarım, ANOVAIn the study, the mechanical behavior of human hip joint with prosthesis was investigated by using statistically designed finite element method. In the scope of the study, two different cemented prostheses types namely; Charnley and Hipokrat were used for predicting bone adaptation and mechanical behavior of cemented total hip reconstructions (THR). The concentrated or distributed muscle and hip contact forces were applied to the cemented THR during walking and climbing of stairs. The finite element modeling and analyses were then pursued according to 23 factorial design method using these prostheses and activities. The maximum von Mises stresses occurred on the components of the cemented THR having the cortical and trabecular layers of bones, prosthesis and cement mantle were determined in the finite element analysis. The statistical analysis of these data was then carried out using variance analysis method to evaluate the contribution and interaction of main factors on the observed values. It was identified from this statistical study that the maximum von Mises stresses of the cemented THR’s components showed significant differences for the majority of main factors and their two-factor interactions. Key Words: Biomechanics, Hip joint, Finite Element Method, Factorial Design, ANOV

Is arthroscopic intervention-assisted fragment-specific fixation technique superior to volar plating in distal radius fractures involving the middle column?

Purpose: In this study, the clinical and radiological results of volar plating and arthroscopic intervention-assisted fragment-specific fixation techniques used in patients operated for AO Type B-C distal radius fracture in which the medial colon is affected were compared. Materials and Methods: X-ray and clinical records of 98 patients who underwent surgical treatment for radius distal end (DER) fracture between April 2011 and January 2017. The patient groups treated with arthroscopy-assisted fragment-oriented fixation (Group A) and plate screw fixation with a volar approach without arthroscopic intervention (Group B) were compared in terms of joint range of motion, grip strength, and clinical scores. Flexion and extension, ulnar deviation, radial deviation, pronation, and supination angles measured with a standard goniometer were recorded in the joint range of motion measurement. Grip strength was measured with a Jamar dynamometer for power measurement. DASH score was used in clinical evaluation. Results: When the operated wrists of both patient groups were compared, there was no significant difference between the DASH score, grip strength, palmar flexion, and pronation angles of motion. A statistically significant difference was observed between the mean dorsiflexion angles of 55 degrees in group A and 44 degrees in group B, mean radial deviation angles of 25 and 19 degrees, and the mean supination angles of 87 and 80 degrees, respectively. Conclusion: Although arthroscopic-assisted fragmentspecific fixation is technically a laborious procedure that requires a learning curve in patients with intra-articular distal radius fractures, it may be beneficial to provide better postoperative results, especially in young patients with high range of motion expectations

Propofol ve karanfil yağının Jack Dempsey balıklarının (Rocio octofasciata) taşınmasında sedatif olarak karşılaştırmalı etkinliği

Aim: The aim of this research was to examine the efficacies of propofoland clove oil to decrease the metabolic activity during transportationin order to determine optimal protocols for sedation of fish.Materials and Methods: 126 Jack Dempsey fish were used in thisresearch. Control (n:42), propofol (n:42) and clove oil (n:42) groupsplaced into closed clear plastic fish bags filled with three litres ofoxygen per litre of water and supplemented with 0.1 ml/L of propofoland clove oil. Respiratory rates, induction and recovery times,feed intake and color-changing times were measured while reactionsto light, vibration and touch were scored for sensitivity controls.Results: According to the results, the decrease of respiratory ratesper minute (67.26 ± 6.3, 50.26 ± 9.4, 36.52 ± 4.6, 11.74 ± 4.8, 7.10 ±3.5, 4.50 ± 2.2, 3.69 ±1.5) and recovery time respiratory rates (frequencyper minute) of the propofol group (80.12 ± 1.84) differed fromthe control and clove oil groups (p ? 0.05). Regarding the sensibilitycontrols, propofol group was less sensible to light, vibration and touch.Conclusion: Considering its low cost and easy availability, sincepropofol has been found to be more suitable and clove oil was moreineffective than propofol, therefore propofol can be recommended asa priority in the transport of aquarium fish.Amaç: Araştırmanın amacı, balıkların sedasyonuna yönelik en uygun protokolleri belirlemek için, propofol ve karanfil yağının taşıma sırasındaki metabolik etkinliğini azaltmadaki etkinliğini incelemektir. Gereç ve Yöntem: Araştırmada 126 Dempsey balığı kullanıldı. Kontrol (n:42), propofol (n:42) ve karanfil yağı grupları (n:42) litre su başına üç litre oksijenle dolduruldu ve 0.1 ml/L propofol ve karanfil yağı ile takviye edilmiş kapalı plastik torbalara yerleştirildi. Solunum oranları, indüksiyon ve iyileşme süreleri, yem alımı ve renk değiştirme süreleri kaydedildi. Bulgular: Elde edilen bulgular, propofol grubunun solunum hızındaki azalmanın (67.26 ± 6.3, 50.26 ± 9.4, 36.52 ± 4.6, 11.74 ± 4.8, 7.10 ± 3.5, 4.50 ± 2.2, 3.69 ± 1.5) ve iyileşme süresi (dakika başına frekans) (80.12 ± 1.84) kontrol ve karanfil yağı gruplarından istatistiksel olarak farklı (P ? 0.05) olduğu ortaya koyuldu. Duyarlılık kontrolleri bakımından, propofol grubunun ışığa, titreşime ve dokunmaya daha az duyarlı olduğu tespit edildi. Öneri: Düşük maliyetli ve kolay bulunabilirliği göz önüne alındığında, propofol, karanfil yağına oranla daha uygun bulundu ve karanfil yağının daha az etkili bir ajan olduğu tespit edildi. Bu nedenle akvaryum balığı taşımacılığında propofolün öncelikli olarak kullanılması önerilebilir