نتایج جستجو برای: سفتهبازی کوتاهمدت short term speculation

تعداد نتایج: 893715  

Journal: :EMBO reports 2011
Joyce Tait Guy Barker

Food security has become an issue of serious concern because global food supplies are threatened by systemic collapse. increasing demand for food caused by global population growth, changing lifestyles in developing countries, climate change and competition with bio fuels are combining to create a ‘perfect storm’ (godfray et al, 2010). Moreover, short-term weather pattern changes leading to flo...

2011
Yu-Jane Liu

This paper demonstrates that investor irrationality can be contagious across markets. Supplementing existing studies on resale option theory, we illustrate that warrant speculation could spill over to the underlying stock market. Our findings indicate that high turnover of underlying stocks is associated with previous day’s high unexpected turnover of warrants, or previous day’s larger price de...

2007
Michael Hanke Jürgen Huber Michael Kirchler Matthias Sutter

The effects of a Tobin tax on foreign exchange markets have long been disputed. We present an experiment with currency trading on two markets, where either none, one, or both markets are taxed. Our results confirm the hitherto undisputed issues: a tax reduces trading volume, shifts market share to untaxed markets, and leads to negligible tax revenues if tax havens exist. Concerning the controve...

Journal: :International Journal of Forecasting 2022

We construct a set of HAR models with three types infinite Hidden Markov regime-switching structures. In particular, jumps, leverage effects, and speculation effects are all taken into account in the realized volatility modeling. forecast five agricultural commodity futures (Corn, Cotton, Indica rice, Palm oil Soybeans) based on high-frequency data from Chinese markets, evaluate performances us...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی اصفهان - دانشکده صنایع و سیستمها 1386

هدف اصلی این پایان نامه بررسی تاثیر زیرساخت ها بر رشد اقتصادی ایران است. در این تحقیق از تابع تولید کاب- داگلاس استفاده شده که در کنار نیرویکار و سرمایه به نمایندگی از اثر زیرساخت ها بر رشد از شاخصهای چهارگانه مربوط به نیرو و انرژی، حملونقل، ارتباطات و بهداشت و سلامت جهت تاثیر بر رشد اقتصادی استفاده شده است. با استفاده از دادههای سریزمانی به برآورد تابع بهرهوری نیرویکار در طی سال های 1380-1353 ...

Journal: :JCP 2012
Geng Tian Hui Peng Chao Sun Yijun Li

Reputation Speculation behavior means that the buyers and sellers collaborate with each other to make fake transaction and give positive feedbacks in order to raise reputation level of online shops. This paper finds that reputation speculation is widely adopted and becomes an industry in China, making the consumers distrust the reputation of online stores, which is not conducive for the long-te...

ژورنال: ارمغان دانش 2020

Abstract Background:  Diabetes is a major public health problem globally with an increasing disease trend. The Specific problems of patients in the control and treatment of this disease, which is caused great challenges of everyday life using coping behaviors necessary to better adaptability . Stress can interfere with memory by mechanisms that directly affect brain function. Deploying an appr...

Journal: :Renewable Energy 2022

We study the dependence of renewable energy production-related critical metal futures and producer equity returns, compared to non-renewable (oil natural gas) some other globally relevant commodity markets. find different asymmetric symmetric dependencies in these The is most important markets, i.e., silver, copper, platinum. Still, surprisingly, for example, oil market, relationship symmetric,...

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