منابع مشابه
When doing the wrong thing is right
3つの異なる練習方法でダンスの学習効果を検証した. marking練習は full-out練習よりも学習効果がある. markingと full-outと共にmental simulation練習よりも学習効果がある.
متن کاملWhat is the cost of getting the price wrong?
BACKGROUND The objective of this study was to compare differences in cost estimates for paediatric HIV hospital service provision based on hospital prices with cost estimates obtained through a research-based service-specific costing exercise. METHODS Activity data on the use of hospital services of children by stage of HIV infection were collected from case-notes for 118 HIV antibody positiv...
متن کاملWhen Is Price Discrimination Profitable?
W consider a general model of monopoly price discrimination and characterize the conditions under which price discrimination is and is not profitable. We show that an important condition for profitable price discrimination is that the percentage change in surplus (i.e., consumers’ total willingness to pay, less the firm’s costs) associated with a product upgrade is increasing in consumers’ will...
متن کاملWhen is the price of risk high ? ∗
We show that the price of risk and quantity of risk are negatively correlated in the time-series for benchmark factors in equities and currencies. Managed portfolios that increase factor exposures when volatility is low and decrease exposure when volatility is high thus produce positive alphas and increase factor Sharpe ratios. We also find volatility timing to be more beneficial to a mean vari...
متن کاملThe eyes are right when the mouth is wrong.
When describing visual scenes, speakers typically gaze at objects while preparing their names. In a study of the relation between eye movements and speech, a corpus of self-corrected speech errors was analyzed. If errors result from rushed word preparation, insufficient visual information, or failure to check prepared names against objects, speakers should spend less time gazing at referents be...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Science
سال: 2003
ISSN: 0036-8075,1095-9203
DOI: 10.1126/science.301.5635.895