İktisadi aktivite ve işsizlik oranının konut talebi üzerine etkileri: Türkiye için vektör hata düzeltme modeli tahmini

This study investigates the relationship between the probability of buying a house, industrial production index, and unemployment rate in Turkey. This paper tests whether there is a long-run relationship among above-stated variables by conducting a cointegration analysis and estimating a vector error correction model with a monthly data over the period between 2010:01 and 2019:12. While the test results suggest a negative and statistically significant relation between the probability of buying a house and the unemployment rate, the results suggest a positive but statistically insignificant relation with economic activity. Moreover, the deviation from the longrun equilibrium is corrected towards equilibrium by 24% within a periodBu çalışma Türkiye'de konut satın alma ihtimali, sanayi üretim endeksi ve işsizlik oranı arasındaki ilişkiyi araştırmaktadır. Makale, eş bütünleşme analizi ve vektör hata düzeltme modelini 2010:01 ile 2019:12 arasındaki aylık verilerle tahmin ederek belirtilen değişkenler arasındaki uzun dönemli ilişki olup olmadığını test etmektedir. Test sonuçları, ev satın alma ihtimalinin işsizlik oranı ile arasında negatif ve istatistiksel olarak anlamlı ilişki olduğunu ortaya koyarken iktisadi aktivite ile arasında pozitif fakat istatistiksel olarak anlamsız ilişki olduğunu ortaya koymaktadır. İlaveten, konut satın alma ihtimalinde meydana gelen uzun dönem dengesinden sapma her bir dönem içinde %24 oranında düzelmektedi

The impact of going public on firm-level employment: Evidence from IPO listed firms on BIST

This paper investigates how issuing initial public offerings (IPOs) affects corporate decisions in a firm. We focus on the impacts of capital raised at IPO event dates on subsequent employment growth in IPO listed firms that went public between 2000 and 2016 in Borsa Istanbul (BIST). We find that accessing the public equity market has a positive impact on employment growth through accessing the debt market. As their borrowing abilities improve, firms tend to increase their expenditures on physical capital. In turn, firms need to hire more employees to run their operations. Moreover, we find that reliance on external financing above the median degree or being younger than the median sample age positively and significantly affect employment growth during IPO and in the post-IPO event years. Finally, we calculate the effects of marginal changes in primary capital on firms' assets, cash holdings, capital expenditure, personnel expenditure, and debt, and find that the firms tend to spend an incremental amount of externally generated funds via IPO mostly on physical capital expenditures

İpek Yolu, ed. Ahmet Taşağıl

Eski çağlardan itibaren ticaretin önemli rotalarından biri olan tarihi İpek Yolu’nun oluşumunu, geçirdiği süreçleri, güzergâhlarını, üzerinde kurulan uygarlıkları, kültürleri, mimari ve sanat eserlerini çeşitli dönemler ve bölgede hüküm sürmüş devletler üzerinden inceleyen İpek Yolu başlıklı çalışma, Ahmet Taşağıl editörlüğünde, Türk Tarihine Hizmet Vakfı, T.C. Başbakanlık TİKA, TDBB (Türk Dünyası Belediyeler Birliği) ve Yunus Emre Enstitüsü’nün işbirliğiyle yayımlanmış

Dynamic implications of prospect utility in an overlapping generations model

Ankara : The Department of Economics, İhsan Doğramacı Bilkent University, 2014.Thesis (Master's) -- Bilkent University, 2014.Includes bibliographical references leaves 19-20.This thesis studies an overlapping generations model in the presence of prospect theory which has scarcely been addressed in macroeconomic growth models. The set up in this thesis provides us a unique steady state with global convergence and multiple steady states with local convergence. The presence of prospect preferences in the utility form leads to the multiplicity even under convex technology. Numerical analysis supports us that cross country income divergence can also be explained by a mechanism in which preference component is altered.Usta, AhmetM.S

Duodenum birinci kısım divertikülünden kaynaklanan nadir bir schwannom olgusu

Bu yazıda periferal sinir schwann hücrelerinden köken alan nadir bir duodenal schwannoma olgusu sunulmuştur. 57 yaşında bayan hasta anemi tetkiki sırasında ateş ve karın ağrısı şikayeti ile başvurdu. Fizik muayenesinde karın sağ üst kadranda hassasiyet tespit edildi. Laboratuar değerlerinde 15 300/l olan lökositoz haricinde anormallik yoktu. Tüm tümör belirteçleri normal değerlerdeydi. Ultrasonografide duodenuma yapışık hipoekoik kitle tespit edildi. Bilgisayarlı tomografi ve manyetik rezonans incelemede aynı lokalizasyonda 4x3 cm'lik kitle ve 8x11x12 cm'lik karaciğer sağ lobda abse bulundu. Hepatik abse drenajı ve duodenal divertikülektomi yapıldı. Histopatolojik incelemede şekil ve büyüklükte hafif derecede değişiklikler gösteren kesişen iğsi hücre kümeleri içeren tümöral kitle görüldü. İmmünohistokimyasal olarak tümör hücrelerinin S100 protein ile kuvvetli pozitiflik vermesi nedeni ile duodenal schwannoma tanısı kondu. Ameliyat sonrası dönemi sorunsuz geçen hasta 8. gün taburcu oldu.A case of duodenal schwannoma, a rare tumor arising from schwannian cells of peripheral nerves is presented. A 57-year-old woman was admitted with abdominal pain and fever during investigation of anemia. Physical examination revealed tenderness in the right side of the upper abdomen. Laboratory tests showed no abnormality except for leucocytosis of 15 300/l. All tumor markers were negative. Ultrasonography revealed a hypoechoic mass adjacent to the duodenum. Computed tomography and magnetic resonance imaging showed a 4x3 cm mass in the same region and an abscess with dimensions of 8x11x12 cm in the right lobe of liver. Hepatic abscess drainage and duodenal diverticulectomy was performed. Histopathological examination revealed a tumorous mass composed of interlacing bundles of spindle cells, showing mild variations in nuclear shape and size. Immunohistochemically tumor cells were positive for S100 protein, thus, schwannoma of the duodenum was diagnosed. The postoperative course was uneventful and the patient was discharged on the eighth day of operation

Evaluation of the coronal malposition of the volar locking plate in the treatment of distal radius fractures

Background and objectives: Literature does not show any studies regarding plate placement problems in the coronal plane of patients with volar plating due to distal radius fracture diagnosis. We aimed to investigate the functional and laboratory results of the coronal malposition of the volar locking plate in patients with distal radius fracture treated with internal fixation. Methods: In this retrospective study, we included patients who had volar plate fixation, were aged between 18 and 80, had no pathological fracture, had a minimum of six months of follow-up, and had the same rehabilitation protocol. We consider the angle subtended on the coronal axis between the distal radius long axis and the distal radius locking plate as coronal malposition. We named the coronal malposition angle the "AYE Angle." Patients with an AYE angle of over 1 degree were evaluated under group 1. Patients with an AYE angle of 0-1 degrees were evaluated under group 2. Radiological parameters were taken from AP-Lateral X-ray views. Superficial University System of Georgia (USG) examinations were applied to detect tendon problems. The DASH and QUICK-DASH scoring systems were used for clinical evaluation. Grip strength was measured with a dynamometer in all patients. All results were compared between the two groups. Results: Thirteen patients were female and 27 patients were male. Nineteen patients who had coronal malposition were added to group 1, while 21 patients who had no coronal malposition were added to group 2. Fifteen patients had normal USG results in group 2, while 18 patients had edema around the flexor pollicis longus (FPL) tendon as a result of USG in group 1. Statistically, a significant difference was detected between the two groups in terms of the amount of tenosynovitis around FPL (p=0.01). A statistically significant relationship was found between USG grading and malposition grading. The study revealed that a higher rate of USG grade 2 was found in patients with malposition grade 2 (90.9%), while a higher rate of USG grade 1 (50%) was observed in patients with malposition grade 1 (p=0.01). A statistically significant difference was not found between Soong grading and USG in terms of the level of tenosynovitis around the FPL tendon. The amount of tenosynovitis detected around the FPL tendon was 62.5% for Soong and grade 0 level, 60.7% for grade 1 level, and 50% for grade 2 level. There was no statistically significant difference between the two groups in the DASH and QUICK-DASH scoring systems (p=0.96). There was no statistically significant difference between the two groups in the grip strength (p=0.52). Conclusion: Coronal plate position in the treatment of the distal radius fracture is important to avoid potential flexor tendon problems. The volar plate position should be adjusted properly both in the coronal and sagittal axes

The presence of hydronephrosıs ın stagıng bladder cancer: an omınous sıgn

Objective: We investigated whether the presence of unilateral or bilateral upper tract obstruction could accurately predict advanced cancer stage. Methods: Six hundred and ten patients with bladder cancer entered into the tumor registries of our institutions between January 1990 and December 1994. The median patient age was 64 years (range 35 to 80). A total 75 (12%) patients had unilateral or bilateral hydronephrosis on an IVP at the time of initial diagnosis of the bladder cancer. Preoperative screening included physical examination, chest radiograph, complete blood count, blood urea nitrogen, creatinin, electrolyte analysis and IVP. Furthermore, patients were usually evaluated by bone scan and computerized tomography (CT). The diagnosis of transitional cell carcinoma was made by cystoscopy and transurethral resection of the tumor. Staging transurethral resection was done in all cases. Results: During a 5-year period 75 of 610 patients with carcinoma of the bladder had ureteral obstruction on excretory urography at the time of the initial diagnosis. Preoperative IVP revealed unilateral and bilateral hydronephrosis in 55 (73%) and 20 (27%) patients, respectively. Pathological staging revealed predominantly pT1 lesions for patients with unilateral obstruction. There were 30 (55%) patients with pT1, 10 (18%) with pT2, and 15 (27%) with pT3. Pathological staging revealed predominantly pT2 lesions for patients with bilateral obstruction. Pathological stage was pT2 in 10 (50%) cases, pT3 in 5 (25%), and pT4 in 5 (25%). Conclusion: IVP can be used in staging because hydronephrosis may Indicate the presence of a muscle-invasive bladder cancer, especially, bilateral hydronephrosis was strongly associated with advanced stage disease

Sustainability of traditional buildings located in rural area

In this days, sensitivity to environmental issues of people increased together with the awareness of the concept of sustainability. The structures, which are built in a rural residential area, are integrated with the natural environment. In Turkey, local traditional structures are structures that can be produced easily in place and materials are being used wisely. These houses which are used renewable natural materials carries a lot of features of the sustainable approach. Traditional structures have been shaped by the region where they are, because of the necessity. In this study, materials and construction systems of the traditional buildings which are located in rural areas are discussed and the buildings have been evaluated the context of ecology and sustainability

A rare cause of intestinal obstruction due to an exophytic gastrointestinal stromal tumor of the small bowel

Introduction: Gastrointestinal stromal tumors constitute a distinct group of rare gastrointestinal tract tumors that originate from the interstitial cells of Cajal. These jejunoileal lesions are a rare cause of obstruction but can be associated with substantial morbidity. Case: A 59-year-old woman presented to the emergency department with abdominal pain and distention. Physical examination revealed tenderness and rebound in right lower quadrant. Computed tomography revealed a mass in lower right quadrant. A 9x9x4 cm exophytic ileal mass was observed at exploration. Preoperative diagnose was a small bowel tumor and then segmental resection and primary anastomosis were performed. Histopathological investigation revealed spindle cells that stained strongly for C-117, consistent with a diagnosis of a malign gastrointestinal stromal tumor. Conclusion: We conclude that exophytic small bowel gastrointestinal stromal tumors are rare lesions, which should be kept in mind by physicians among the diagnosis of small bowel obstructions in order to reduce substantial morbidity and mortality

Attitudes towards mobile learning of the Faculty of Education and the Faculty of Tourism students

Mobil cihazlar, teknolojik araçların ve İnternetin birlikte gelişiminin önemli bir temsilcisi konumundadır. Artan işlem gücüne karşın donanımsal olarak küçülen ve taşınabilirliği nedeniyle mobil olarak adlandırılan bu cihazların hayatta her geçen gün önemi artmaktadır. Eğitim alanı da mobil cihazların kullanıldığı alanlardan biridir. Bu araştırmada da eğitim alanında mobil teknolojilere yönelik öğrenci tutumları araştırılmıştır. Bu kapsamda 2014-2015 eğitim öğretim yılında eğitim fakültesi ve turizm fakültesi öğrencilerinden toplam 450 öğrenciye ulaşılmıştır. Eğitim ve turizm fakültesi öğrencilerine demografik veri anketi ve “Mobil Öğrenmeye Yönelik Tutum Ölçeği” araştırma verilerini toplamak için uygulanmıştır. Bu iki fakülte temel alınarak ve “Mobil Öğrenmeye Yönelik Tutum Ölçeği” kullanılarak öğrencilerin mobil öğrenmeye yönelik tutumları farklı değişkenler açısından incelenmiştir. Araştırma sonucunda eğitim fakültesinde öğrenim gören öğrencilerin turizm fakültesinde öğrenim gören öğrencilere oranla daha fazla mobil öğrenmeye yönelik olumlu tutuma sahip oldukları, fakülte kontrol altında tutulmak kaydıyla cinsiyet, öğrenim görülen sınıf, mezun olunan lise türü ve kalınan yerde İnternete sahip olma durumlarına göre tutumlar farklılaşmazken kendine ait mobil cihaz/bilgisayar olma durumuna göre ise mobil öğrenmeye yönelik tutumun farklılaştığı sonucuna ulaşılmıştır.Mobile devices are an important representative of technological tools and the Internet development together. The importance of these devices which are called mobile due to their portability and which have shrunken hardware although their improved processing power is increasing in everyday life. The field of education is one of the areas where mobile devices are used. In this study, students’ attitudes towards mobile technology in education have been investigated. In this context, 450 students from the faculties of education and tourism have been reached in 2014-2015 academic year. Students’ attitudes towards mobile learning are analyzed in terms of different variables based on these two faculties, using Mobile Learning Attitude Scale. Research results indicated that the faculty of education students have more positive attitude towards mobile learning compared to the faculty of tourism students. According to the results, controlling faculty variable, although attitudes do not differentiate in terms of gender, grade level, graduated high school and the presence of Internet connection at households; attitudes towards mobile learning differentiate in terms of mobile device-computer possession