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Regulation of Money Market Funds (MMFs) in the EU requires some categories MMFs to consider applying liquidity management tools if they breach a minimum ‘weekly’ requirement. Anticipation application such is plausible amplifier run risks. Using larger European dataset than previously studied, we assess whether proximity thresholds explains differences redemptions both at start COVID-19 crisis a...
از آنجاکه صفات فنوتیپی، تنوع ژنتیکی مستقیمی را نشان میدهند، هدف از این مطالعه تنوع موجود در جمعیتهای زنبور عسل که یکی از اهداف مهم در اصلاح نژاد زنبور عسل محسوب میشود، بوده است. بدین ترتیب در پاییز 93 از کلنیهای زنبور عسل 16 استان کشور به طور تصادفی نمونهگیری و جمع آوری گردید. گروهبندی جمعیت کلنیهای مورد بررسی بر اساس صفات کلیدی مورفولوژیک با روش تجزیه خوشهای (PCA) و به روش حداقل واریا...
این تحقیق به منظور تجزیه اثرات متقابل ژنوتیپ در محیط (G×E) برای عملکرد دانه درآزمایشات چند محیطی گندم دوروم در ایستگاههای تحقیقات کشاورزی دیم کشور با استفاده از مدلهای آماری GGEبایپلات (اثر ژنوتیپ + اثر متقابل G×E) و رگرسیون توام (ضریب رگرسیون + واریانس انحراف از رگرسیون) انجام شد. بر اساس نتایج تجزیه واریانس، سهم اثرات اصلی محیط، اثر متقابل G×E و اثر ژنوتیپ به ترتیب 84%، 7/7% و 3/2% ...
Article history: Received 3 April 2014 Accepted 13 November 2014 Available online 20 November 2014 This paper examines the effect of insider trading restrictions on corporate risk-taking. Using a cross-country sample of 38 countries over the 1990 to 2003 period, we find that corporate risk-taking is positively related to insider trading restrictions. This finding is robust to alternative regres...
We estimate the importance of household liquidity for the effect of the Car Allowance Rebate System (CARS) on vehicle transactions. We measure the average program impact by comparing households with “clunkers” eligible for CARS to households with similar vehicles that are ineligible. The liquidity provided by CARS contributed to its larger than anticipated take-up. Clunkers with existing loans,...
We evaluate the effect that payday loan access has on credit and labor market outcomes of individuals in the U.S. Army. Along with the conditional random assignment of servicemembers to different states, we employ three identification strategies using cross-sectional variation in state policies, within-state variation in payday lending laws over time, and difference-indifference analysis using ...
A life-cycle model with equilibrium default in which consumers with and without temptation coexist is constructed to evaluate the 2005 bankruptcy law reform and other counterfactual reforms. The calibrated model indicates that the 2005 bankruptcy reform achieves its goal of reducing the number of bankruptcy filings, as seen in the data, but at the cost of loss in social welfare. The creditor-fr...
Recognition of tRNA by the cognate aminoacyl-tRNA synthetase during translation is crucial to ensure the correct expression of the genetic code. To understand tRNA(Leu) recognition sets and their evolution, the recognition of tRNA(Leu) by the leucyl-tRNA synthetase (LeuRS) from the primitive hyperthermophilic bacterium Aquifex aeolicus was studied by RNA probing and mutagenesis. The results sho...
A life-cycle model with equilibrium default in which consumers with and without temptation coexist is constructed to evaluate the 2005 bankruptcy law reform and other counterfactual reforms. The calibrated model indicates that the 2005 bankruptcy reform achieves its goal of reducing the number of bankruptcy filings, as seen in the data, but at the cost of loss in social welfare. The creditor-fr...
Assumptions about the dynamic and distributional behavior of risk factors are crucial for the construction of optimal portfolios and for risk assessment. Although asset returns are generally characterized by conditionally varying volatilities and fat tails, the normal distribution with constant variance continues to be the standard framework in portfolio management. Here we propose a practical ...
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