نتایج جستجو برای: O47 C33

تعداد نتایج: 832  

2001
Espen Henriksen Karen Helene Midelfart Frode Steen

Economies of Scale in European Manufacturing Revisited* We test for internal and external economies of scale in European manufacturing, employing a more disaggregated data set than has been used in earlier analyses. We aim to separate externalities from common business cycle effects. Fifteen European manufacturing industries in France, Germany, Italy and the UK are analysed. We focus on economi...

Journal: :iranian journal of economic studies 2012
zahra elmi omid ranjbar

abstract in this paper, income per capita convergence hypothesis is tested in selected oic countries. for this purpose, we use the time series model and univariate kpss stationary test with multiple structural breaks (carrion-i-silvestre et al. (2005)) over the period 1950-2008. the results show that most oic countries could not catch up toward usa. although because of some positive term of tra...

Journal: :International Journal of Energy Economics and Policy 2021

Oil price volatility has increased tremendously in the last decade and become most difficult commodity to predict. The of Brent crude oil was 42 US dollars 2020, whereas it is 72 today. All countries are adversely affected by this volatility. But severity differs between countries. Especially oil-exporting expected be more negatively. Among bordering Caspian Sea, national incomes Russia, Iran, ...

Journal: :تحقیقات اقتصادی 0
زهرا دهقان شبانی استادیار بخش اقتصاد دانشگاه شیراز روح اله شهنازی استادیار بخش اقتصاد دانشگاه شیراز

human capital has important role on economic growth. this factor can increase labor and capital productivity. it can increase capacity of new technology and reduce criminal participation and improve voters’ political behavior and migration of people with high human capital to another region has effects on region and spatial spillover on other regions. the present study aimed to analyze the dire...

Journal: :Molecular pharmacology 2015
Manna Huang Yongxian Shao Jianying Hou Wenjun Cui Beibei Liang Yingchun Huang Zhe Li Yinuo Wu Xinhai Zhu Peiqing Liu Yiqian Wan Hengming Ke Hai-Bin Luo

Phosphodiesterase-9 (PDE9) inhibitors have been studied as potential therapeutics for treatment of central nervous system diseases and diabetes. Here, we report the discovery of a new category of PDE9 inhibitors by rational design on the basis of the crystal structures. The best compound, (S)-6-((1-(4-chlorophenyl)ethyl)amino)-1-cyclopentyl-1,5,6,7-tetrahydro-4H-pyrazolo[3,4-day]pyrimidin-4-one...

Journal: :Frontiers in Microbiology 2020

2010
Almas Heshmati Subal C. Kumbhakar

Technical Change and Total Factor Productivity Growth: The Case of Chinese Provinces In the literature technical change is mostly assumed to be exogenous and specified as a function of time. However, some exogenous external factors other than time can also affect technical change. In this paper we model technical change via time trend (purely external non-economic) as well as other exogenous (e...

2010
Flávio Vieira Ronald MacDonald

The paper investigates the role of real exchange rate misalignment on long-run growth for a set of ninety countries using time series data from 1980 to 2004. We first estimate a panel data model (using fixed and random effects) for the real exchange rate, with different model specification, in order to produce estimates of the equilibrium real exchange rate and this is then used to construct ou...

Journal: :تحقیقات اقتصادی 0
امید رنجبر کارشناس مطالعات اقتصادی وزارت بازرگانی، دفتر امور بین‏الملل و سازمان‏های تخصصی zahra elmi دانشیار در دانشگاه مازندران، دانشکده اقتصاد و علوم اداری

in this paper, we analyze the dynamics of income gap between 138 countries with usa by using time series model of convergence hypothesis and various panel unit root tests over period 1950-2008. all panel unit root tests don’t reject the null hypothesis of unit root. univariate unit root tests results show that gdp per capita of south korea, switzerland, austria, lesoto and hungry catch up with ...

ژورنال: :مجله تحقیقات اقتصادی 2011
امید رنجبر zahra elmi

در این مقاله، تغییر کاهش شکاف درآمد سرانه‎ی 138 کشور دنیا به سمت امریکا، با کمک مدل سری زمانی فرضیه‎ی هم‎گرایی و آزمون‏های ریشه‎ی واحد داده‎های تابلویی، طی دوره‎ی 2008-1950 بررسی شده است. کلیه آزمون‏های ریشه‎ی واحد داده‏های تابلویی فرضیه هم‎گرایی گروهی کشورها به سمت امریکا را رد می‏نمایند. نتایج آزمون‏های ریشه‎ی واحد تک متغیره حاکی از ارتقاء درآمد سرانه کشورهای کره‎ی جنوبی، سوئیس ، اتریش، مجارس...

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