18 research outputs found

    A Fracking Fragile Issue: Courts Continue to Tiptoe Around Subsurface Trespass Claims

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    Theoretical and empirical literature shows that there is a significant relation between currency substitution and exchange rate volatility, and this volatility affects money demand significantly. This study examines the relation between reverse currency substitution and the volatility in exchange rate as well as the effects of this volatility on the demand for money. We used monthly data covering the period of 2001/04-2006/12, which started with the implementation of Program for Transition to a Strong Economy. Following the literature, we employed E-GARCH method in exchange rate volatility modeling and Pesaran et al (2001) bounds test approach in the estimation of money demand function. In accordance with the theoretical expectations, we found that with the increase in reverse currency substitution the exchange rate volatility decreased. Moreover, the decline in the volatility of exchange rate increased the money demand, i.e. accelerated the reverse currency substitution process.Teorik ve ampirik literatür, para ikamesinin döviz kurundaki oynaklığı ve bu oynaklığın da para talebini anlamlı düzeyde etkilediğini göstermektedir. Bu çalışmanın amacı, son dönemde, tersine dönmeye başlayan para ikamesinin döviz kuru oynaklığına ve bu oynaklığın da para talebi üzerine etkisinin olup olmadığının araştırılmasıdır. Çalışmada Güçlü Ekonomiye Geçiş Programı veri seti için başlangıç olarak alınmış ve 2001/04-2006/12 dönemini kapsayan aylık veri seti kullanılmıştır. Oynaklığın modellenmesinde E-GARCH ve para talebi denkleminde ise Pesaran vd. (2001) sınır testi yaklaşımı ile tahmin yapılmıştır. Teorik beklentiye uygun olarak, tahmin sonuçlarına göre inceleme döneminde, para ikamesinin tersine dönmesi döviz kuru oynaklığını azaltmıştır. Ayrıca, döviz kuru oynaklığındaki bu azalışın da ters para ikamesi sürecini hızlandırdığı para talebi modeli tahminiyle gösterilmiştir

    İMKB’de Spekülatif Şişkinlerin Test Edilmesi

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    The main aim of this study is to examine the existence of speculative bubbles in Turkey using the daily data on ISE-100 and different sectors. For this purpose, the approach developed by McQueen and Thorley (1994), which utilizes duration models, is used. The beginning date of the daily indexes are 3/7/1987 for ISE-100 index, 28/12/1990 for financial and industry indexes, and 2/1/1997 for services index and 3/7/2000 for technology index. The end of observation period for all of the indexes is 20/02/2008. Both parametric and nonparametric duration test results do not support the expectations that there are speculative bubbles in all cases, that is, for the full data (ISE-100) and the data by considering sector differences as well.Bu çalışmanın amacı İMKB’de spekülatif şişkinliklerin varlığının süre verisi (duration) modeli ile test edilmesidir. Bu amaçla İMKB’deki hisse senedi fiyatlarında süre bağımlılığı olup olmadığı McQueen ve Thorley (1994)’nin yaklaşımı kullanılarak farklı sektörler bazında araştırılmaktadır. Verilerin başlangıç tarihi IMKB 100 endeksi için 3/7/1987, mali endeks ve sınai endeksi için 28/12/1990, hizmetler için 2/1/1997 ve teknoloji endeksi için 3/7/2000’dir. Seriler başlangıç tarihlerinden 20/02/2008 tarihine kadar olan süreyi kapsamaktadır ve günlük verilerdir. Yapılan hem parametrik hem de parametrik olmayan süre bağımlılığı testlerine göre incelenen tüm sektörlerde spekülatif şişkinliklerin var olmadığı gözlemlenmiştir

    İMKB’de Spekülatif Şişkinlerin Test Edilmesi

    Get PDF
    The main aim of this study is to examine the existence of speculative bubbles in Turkey using the daily data on ISE-100 and different sectors. For this purpose, the approach developed by McQueen and Thorley (1994), which utilizes duration models, is used. The beginning date of the daily indexes are 3/7/1987 for ISE-100 index, 28/12/1990 for financial and industry indexes, and 2/1/1997 for services index and 3/7/2000 for technology index. The end of observation period for all of the indexes is 20/02/2008. Both parametric and nonparametric duration test results do not support the expectations that there are speculative bubbles in all cases, that is, for the full data (ISE-100) and the data by considering sector differences as well.Bu çalışmanın amacı İMKB’de spekülatif şişkinliklerin varlığının süre verisi (duration) modeli ile test edilmesidir. Bu amaçla İMKB’deki hisse senedi fiyatlarında süre bağımlılığı olup olmadığı McQueen ve Thorley (1994)’nin yaklaşımı kullanılarak farklı sektörler bazında araştırılmaktadır. Verilerin başlangıç tarihi IMKB 100 endeksi için 3/7/1987, mali endeks ve sınai endeksi için 28/12/1990, hizmetler için 2/1/1997 ve teknoloji endeksi için 3/7/2000’dir. Seriler başlangıç tarihlerinden 20/02/2008 tarihine kadar olan süreyi kapsamaktadır ve günlük verilerdir. Yapılan hem parametrik hem de parametrik olmayan süre bağımlılığı testlerine göre incelenen tüm sektörlerde spekülatif şişkinliklerin var olmadığı gözlemlenmiştir

    Inflationary effect of crude oil prices in Turkey

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    It is generally acknowledged that changes in oil prices affect economic welfare in ways that are not entirely reflected in transactions in the oil market. In this article, by using the 1990 input-output table, the inflationary effects of crude oil prices are investigated for Turkey. Under fixed nominal wages, profits, interest and rent earnings, the effect of increasing prices of oil on inflation is limited. However, when wages and the other three factors of income (profit, interest and rent) are adjusted to the general price level that includes the oil price increases, the inflationary effect of oil prices becomes significant. Hence, indexation could have very severe effects on an economy when oil prices increase and, in some cases, could even lead to hyperinflation. © 2002 Elsevier Science B.V. All rights reserved

    Kendi Hesabına Çalışılan İşler: Türkiye Üzerine Ekonometrik Bir Uygulama(Self-Employment: An Econometric Application on Turkey)

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    This study examines the main determinants of self-employment in Turkey. For this aim, we utilized from the definition of self-employment in TURKSTAT’s Household Labor Force Surveys (HLFS), where self-employment covers three groups of individuals, namely, employer, own-account worker and unpaid-family workers. The data set is obtained from the raw data of Household Labor Force Surveys of 2006-2007 and 2008. In order to analyze the data, the multinomial-logit model is used and estimated by maximum likelihood estimation method. Main findings of this analysis are as the following. We find that living in the urban areas increases the likelihood of being employer, but decreases the likelihood of being own-account worker as well as unpaid family worker, as compared to the base category of wage-employed individuals. Also, being female declines the likelihood of being in the self-employment types. Further, being married increases the probability of being employer and own-account worker, while it declines the probability of being unpaid family worker. In addition, being head of household increases the likelihood of being employer, but it declines the likelihood of being own-account worker and unpaid family worker, as compared to the base group. Furthermore, increases in age continuously increase the probability of being employer, while there is a U-shaped relation between age and being unpaid family worker, compared to the base group of wage-employed. As compared to non-graduates the probability of being employer is lower for vocational high school and university graduates, while the same probability is higher for B. Darıcı & H.M. Taşçı / Kendi Hesabına Çalışılan İşler: Türkiye Üzerine Ekonometrik Bir Uygulama 16 the primary school graduates. Finally, geographical region of residence is also statistically significant difference in determining the types of employment

    Investigations of listeria species in milk and silage produced in Burdur province [Burdur yöresinde üretilen su7die;t ve silajlarda listeria türlerinin araştirilmasi]

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    The aim of this study was to investigate the presence of Listeria species in the milk and silage samples obtained from fifteen different farms in Burdur. A total of 250 samples (silage and cow's milk obtained from animals fed and not fed with silage) were analyzed. L. monocytogenes was isolated in 6 (2.4%) out of the 250 samples. Five (6.66%) of the 75 silage samples and 1 (1.17%) of the 85 milk samples obtained from cows fed with silage were contaminated with L. monocytogenes, whereas no Listeria spp. were isolated from the 90 milk samples from cows not fed with silage. The isolation of L. monocytogenes from milk and silage samples in Burdur indicates that these products could create a serious risk to the public health

    Bronchiolitis as a feature of Kartagener syndrome A case report

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    Summary: Kartagener syndrome (KS), also known as immotile cilia syndrome or as a primary ciliary dyskinesia, is characterized by the triad of situs inversus, bronchiectasis, and chronic pansinusitis. A few studies reported that diffuse bronchiolitis might be one of the characteristic features of the lung in KS. We aimed to present the radiologic characteristics of KS, including diffuse bronchiolitis, sinus aplasia, and situs inversus totalis in a single case. Copyright © 2011 by Lippincott Williams & Wilkins

    Dehydroepiandrosterone supplementation improves ovarian response and cycle outcome in poor responders

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    Ozmen, Batuhan/0000-0002-4504-669X; Atabekoglu, Cem Somer/0000-0003-0264-0709; Ozkavukcu, Sinan/0000-0003-4525-9027WOS: 000271046800009PubMed: 19909591The effect of dehydroepiandrosterone (DHEA) supplementation on cycle outcome was assessed in patients with poor ovarian response. In total, 19 poor responder patients who were scheduled to undergo a second intracytoplasmic sperm injection (ICSI)/embryo transfer cycle were enrolled and first ICSI/embryo transfer cycles were taken as the control group. All subjects were given DHEA supplementation (25 me, t.i.d.) for at least 3 months prior to their second ICSI/embryo transfer cycle. In both cycles a fixed dose of rFSH (300 IU/day) and human menopausal gonadotrophin (HMG) (75 or 150 IU/day) along with a flexible gonadotrophin-releasing hormone (GnRH) antagonist protocol were administered. A favourable decrease was noted in mean day 3 serum oestradiol concentrations after DHEA Supplementation (75.14 +/- 28.93 versus 43.07 +/- 11.77; P 17 mm follicles (3 +/- 0.7 versus 1.9 +/- 1.3; P < 0.05), MII oocytes (4 +/- 1.8 versus 2.1 +/- 1.8; P < 0.05), top quality day 2 (2.2 +/- 0.8 versus 1.3 +/- 1.1: P < 0.05) and day 3 embryos (1.9 +/- 0.8 versus 0.7 +/- 0.6; P < 0.05) were achieved in DHEA-supplemented cycles. Cycle cancellation rates were reduced (5.3% versus 42.1%; P < 0.01), and the pregnancy rate per patient and clinical pregnancy rate per embryo transfer (47.4% versus 10.5%; P<0.01 and 44.4% versus 0%; P < 0.01) were improved after DHEA supplementation. DHEA supplementation might enhance ovarian response, reduce cycle cancellation rates and increase embryo quality in poor responders
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