... Adana: Kemal Matbaası, 119 pp. ... J. Econ. Entomol. 89, 175182. Rashad, AM; Ammar, ED, 1984... more ... Adana: Kemal Matbaası, 119 pp. ... J. Econ. Entomol. 89, 175182. Rashad, AM; Ammar, ED, 1984: Mass rearing of the spiny bollworm, Earias insulana (Boisd.) on semi artificial diet. Bull. Soc. Entomol. d'Egypte 65, 239244. ...
... an approximately 50 000 ha area of the plain (State Hydraulic Works, 2004). As the basin is c... more ... an approximately 50 000 ha area of the plain (State Hydraulic Works, 2004). As the basin is closed, discharge of the drainage water is currently the biggest problem in the Harran Plain (Bahçeci et al., 2008). METHODOLOGY. ...
... KAYNAKLAR Andiç, S., Şahin, K., Koç, Ş., 2002. Ayar A, Demirulus H, (2000): Benli, E. 2004. D... more ... KAYNAKLAR Andiç, S., Şahin, K., Koç, Ş., 2002. Ayar A, Demirulus H, (2000): Benli, E. 2004. DİE, 2003. Erkuş, A., Bülbül, M., Kıral, T., Açıl, F., Demirci, R. 1995. Gönç, S. Oysun, G. Ve Ergüllü, E. 1993. Karagözlü, C. ve Kavas, G. 1998. Özcan, TF, Erbil ve E., Kurdal, 1998. ...
The Poznań University of Economics Review, Jun 29, 2006
... Table 2 shows the results of nested and non-nested tests of model performance as a series of ... more ... Table 2 shows the results of nested and non-nested tests of model performance as a series of pair-wise comparisons. A careful indiction for the preferred model shows that the ZIP II model is of the choice for milk, tea and spirits beverages. ...
Bu araştırma TRA1 bölgesindeki hane halklarının sütü ve süt ürünleri talebinin belirlenmesi amacı... more Bu araştırma TRA1 bölgesindeki hane halklarının sütü ve süt ürünleri talebinin belirlenmesi amacıyla yapılmıştır. Örnek hacminin hesaplanmasında oransal örnekleme yöntemi, verilerin analizinde ise Yaklaşık İdeal Talep Sistemi (AIDS) modeli kullanılmıştır. Ayrıca, sistem eşitliklerinin çözümünde Görünüşte İlişkisiz Regresyon (GİR) yöntemine yer verilmiştir. Araştırmada ortalama aile fert sayısı 3 kişi olarak belirlenmiştir. Aile başına haftada ortalama 5.1 litre süt, 2.4 kg peynir, 4.4 kg yoğurt ve 1 kg tereyağı tüketildiği tespit edilmiştir. Süt, peynir, yoğurt ve tereyağı ortalama fiyatları sırasıyla, 3.5, 20.1, 5.7 ve 35.7 TL olarak ortaya konmuştur. Ayrıca süt, peynir, yoğurt ve tereyağına ait ortalama harcama ise haftalık olarak 114.1 TL olarak belirlenmiştir. Elde edilen tahmin sonuçları, Marshalcı fiyat esnekliklerinin homojenlik ve simetri kısıtlı olan modelde yer alan ve incelenen süt ve süt ürünleri için esnek olmadıklarını göstermiştir. Hicksçi fiyat esnekliği bakımından d...
International Journal of Health Planning and Management, Apr 1, 2022
This study identifies the driving forces that contribute to the probabilities of incidence of out... more This study identifies the driving forces that contribute to the probabilities of incidence of out-of-pocket (OOP) expenditures by households in Turkey. Factors affecting the probability of OOP expenditures on medical products/devices/supplies (MP), outpatient services (OTS), and inpatient services (ITS) are examined using the Household Budget Survey data gathered by the Turkish Statistical Institute in 2018. The study applies the multivariate probit model. The incidence of OOP spending varied with 48.9% of the households reporting OOP expenditure on MP, 22.4% on OTS, and 25.4% on ITS. The largest probability changes were associated with household disposable annual income, household type and size, age category, and having private health insurance. Gender and marital status also influenced expenditures in some categories. Lifestyle choices had small and mixed effects, with smoking and alcohol consumption lowering the probability of OOP spending. From a policy standpoint, households with the lowest incomes, large households, and those where the household head was 'others' (retiree, student, housewife, not actively working, etc.) or had a condition preventing employment seemed to report OOP expenditures less frequently and may have chosen not to receive healthcare services, leading to the need for more healthcare services later.
Background The 2002 World Health Report documented that low fruit and vegetable intake are among ... more Background The 2002 World Health Report documented that low fruit and vegetable intake are among the top ten risk factors contributing to attributable mortality and up to three million lives could be saved each year by adequate consumption of F&V across the globe, leading an examination of behavioral preferences of the individual and family social, environmental, and behavioral factors that constitute perceived barriers to fruit and vegetable consumption. ObjectiveThe study examines factors affecting the choice of eating fruits and vegetables by household members and calculates eating frequency probabilities of different population-origin associated with personal attributes and behavior. Method Turkish Health Survey (THS) 2019 data from the Turkish Statistical Institute (TSI) national representative household panel is applied. Estimating a random-effect bivariate probit model of fruit and vegetable choice, we calculated marginal probabilities of choosing fruits and vegetables, the j...
Having spread all over the world and become effective in a very short period, COVID-19 has brough... more Having spread all over the world and become effective in a very short period, COVID-19 has brought about negative effects on food supply and demand by breaking all supply chains. This study aims to determine the long-term volatility spillovers between egg and feed wheat markets in Turkey by using an exchange rate and COVID-19 as exogenous variables as well as to investigate whether these spillovers are asymmetric. The daily market data between 2010:01 and 2022:03 and the Asymmetric BEKK-GARCH (1, 1) model were used for the study . We determined that the conditional variances of egg and feed wheat return series are positively affected by both their shocks in the short run and their uncertainties in the long run. The conditional variances of egg and feed wheat return series were observed to have been positively affected by the uncertainties arising from the exchange rate in the long run, while they were negatively affected by the volatility caused by COVID-19. The depreciation of the ...
Censoring, extreme values, and non-normal distribution are common features in microdata. These da... more Censoring, extreme values, and non-normal distribution are common features in microdata. These data features can compromise the statistical distributions of the estimators when an appropriate model is not used. We use an inverse hyperbolic sine (IHS) transformation in the double-hurdle (DH) model to accommodate extreme values and skewness in censored accommodation spending among Turkish households. The full-parameterized model nests many restricted specifications which do not accommodate dependence, heteroscedasticity, and non-normality in the error terms. Statistical test results support the use of the fully parameterized dependent IHS-DH specification. The statistically significant correlation between the binary and level decisions of accommodation precludes the use of a model with a two-step structure. Some of the findings in our study have a determining or driving force in expressing causality relationship in monthly accommodation probability and level decisions. The study made ...
... Adana: Kemal Matbaası, 119 pp. ... J. Econ. Entomol. 89, 175182. Rashad, AM; Ammar, ED, 1984... more ... Adana: Kemal Matbaası, 119 pp. ... J. Econ. Entomol. 89, 175182. Rashad, AM; Ammar, ED, 1984: Mass rearing of the spiny bollworm, Earias insulana (Boisd.) on semi artificial diet. Bull. Soc. Entomol. d'Egypte 65, 239244. ...
... an approximately 50 000 ha area of the plain (State Hydraulic Works, 2004). As the basin is c... more ... an approximately 50 000 ha area of the plain (State Hydraulic Works, 2004). As the basin is closed, discharge of the drainage water is currently the biggest problem in the Harran Plain (Bahçeci et al., 2008). METHODOLOGY. ...
... KAYNAKLAR Andiç, S., Şahin, K., Koç, Ş., 2002. Ayar A, Demirulus H, (2000): Benli, E. 2004. D... more ... KAYNAKLAR Andiç, S., Şahin, K., Koç, Ş., 2002. Ayar A, Demirulus H, (2000): Benli, E. 2004. DİE, 2003. Erkuş, A., Bülbül, M., Kıral, T., Açıl, F., Demirci, R. 1995. Gönç, S. Oysun, G. Ve Ergüllü, E. 1993. Karagözlü, C. ve Kavas, G. 1998. Özcan, TF, Erbil ve E., Kurdal, 1998. ...
The Poznań University of Economics Review, Jun 29, 2006
... Table 2 shows the results of nested and non-nested tests of model performance as a series of ... more ... Table 2 shows the results of nested and non-nested tests of model performance as a series of pair-wise comparisons. A careful indiction for the preferred model shows that the ZIP II model is of the choice for milk, tea and spirits beverages. ...
Bu araştırma TRA1 bölgesindeki hane halklarının sütü ve süt ürünleri talebinin belirlenmesi amacı... more Bu araştırma TRA1 bölgesindeki hane halklarının sütü ve süt ürünleri talebinin belirlenmesi amacıyla yapılmıştır. Örnek hacminin hesaplanmasında oransal örnekleme yöntemi, verilerin analizinde ise Yaklaşık İdeal Talep Sistemi (AIDS) modeli kullanılmıştır. Ayrıca, sistem eşitliklerinin çözümünde Görünüşte İlişkisiz Regresyon (GİR) yöntemine yer verilmiştir. Araştırmada ortalama aile fert sayısı 3 kişi olarak belirlenmiştir. Aile başına haftada ortalama 5.1 litre süt, 2.4 kg peynir, 4.4 kg yoğurt ve 1 kg tereyağı tüketildiği tespit edilmiştir. Süt, peynir, yoğurt ve tereyağı ortalama fiyatları sırasıyla, 3.5, 20.1, 5.7 ve 35.7 TL olarak ortaya konmuştur. Ayrıca süt, peynir, yoğurt ve tereyağına ait ortalama harcama ise haftalık olarak 114.1 TL olarak belirlenmiştir. Elde edilen tahmin sonuçları, Marshalcı fiyat esnekliklerinin homojenlik ve simetri kısıtlı olan modelde yer alan ve incelenen süt ve süt ürünleri için esnek olmadıklarını göstermiştir. Hicksçi fiyat esnekliği bakımından d...
International Journal of Health Planning and Management, Apr 1, 2022
This study identifies the driving forces that contribute to the probabilities of incidence of out... more This study identifies the driving forces that contribute to the probabilities of incidence of out-of-pocket (OOP) expenditures by households in Turkey. Factors affecting the probability of OOP expenditures on medical products/devices/supplies (MP), outpatient services (OTS), and inpatient services (ITS) are examined using the Household Budget Survey data gathered by the Turkish Statistical Institute in 2018. The study applies the multivariate probit model. The incidence of OOP spending varied with 48.9% of the households reporting OOP expenditure on MP, 22.4% on OTS, and 25.4% on ITS. The largest probability changes were associated with household disposable annual income, household type and size, age category, and having private health insurance. Gender and marital status also influenced expenditures in some categories. Lifestyle choices had small and mixed effects, with smoking and alcohol consumption lowering the probability of OOP spending. From a policy standpoint, households with the lowest incomes, large households, and those where the household head was 'others' (retiree, student, housewife, not actively working, etc.) or had a condition preventing employment seemed to report OOP expenditures less frequently and may have chosen not to receive healthcare services, leading to the need for more healthcare services later.
Background The 2002 World Health Report documented that low fruit and vegetable intake are among ... more Background The 2002 World Health Report documented that low fruit and vegetable intake are among the top ten risk factors contributing to attributable mortality and up to three million lives could be saved each year by adequate consumption of F&V across the globe, leading an examination of behavioral preferences of the individual and family social, environmental, and behavioral factors that constitute perceived barriers to fruit and vegetable consumption. ObjectiveThe study examines factors affecting the choice of eating fruits and vegetables by household members and calculates eating frequency probabilities of different population-origin associated with personal attributes and behavior. Method Turkish Health Survey (THS) 2019 data from the Turkish Statistical Institute (TSI) national representative household panel is applied. Estimating a random-effect bivariate probit model of fruit and vegetable choice, we calculated marginal probabilities of choosing fruits and vegetables, the j...
Having spread all over the world and become effective in a very short period, COVID-19 has brough... more Having spread all over the world and become effective in a very short period, COVID-19 has brought about negative effects on food supply and demand by breaking all supply chains. This study aims to determine the long-term volatility spillovers between egg and feed wheat markets in Turkey by using an exchange rate and COVID-19 as exogenous variables as well as to investigate whether these spillovers are asymmetric. The daily market data between 2010:01 and 2022:03 and the Asymmetric BEKK-GARCH (1, 1) model were used for the study . We determined that the conditional variances of egg and feed wheat return series are positively affected by both their shocks in the short run and their uncertainties in the long run. The conditional variances of egg and feed wheat return series were observed to have been positively affected by the uncertainties arising from the exchange rate in the long run, while they were negatively affected by the volatility caused by COVID-19. The depreciation of the ...
Censoring, extreme values, and non-normal distribution are common features in microdata. These da... more Censoring, extreme values, and non-normal distribution are common features in microdata. These data features can compromise the statistical distributions of the estimators when an appropriate model is not used. We use an inverse hyperbolic sine (IHS) transformation in the double-hurdle (DH) model to accommodate extreme values and skewness in censored accommodation spending among Turkish households. The full-parameterized model nests many restricted specifications which do not accommodate dependence, heteroscedasticity, and non-normality in the error terms. Statistical test results support the use of the fully parameterized dependent IHS-DH specification. The statistically significant correlation between the binary and level decisions of accommodation precludes the use of a model with a two-step structure. Some of the findings in our study have a determining or driving force in expressing causality relationship in monthly accommodation probability and level decisions. The study made ...
Uploads
Papers by Abdulbaki Bilgic