منابع مشابه
Complex Data Produce Better Characters By: B. K. KIRCHOFF
Two studies were conducted to explore the use of complex data in character description and hybrid identification. In order to determine if complex data allow the production of better characters, eight groups of plant systematists were given two classes of drawings of plant parts, and asked to divide them into character states (clusters) in two separate experiments. The first class of drawings c...
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Theory predicts that unit taxes increase the quality in a market since unit taxes reduce the relative price of high quality goods. Ad valorem taxes, on the other hand, have no effect on relative prices and should not affect product quality. The hypothesis is tested empirically in the US wine market. I find that the market share of high quality wine is significantly increased by unit taxes and t...
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The purpose of a learner is to make changes in a performance system to do similar tasks more effectively the next time. The meaning of “more effectively” can be only asserted in the context of the learner’s goals. Three types of learning goals can be distinguished in the context of planning systems: domain goals, planning efficiency goals, and plan efficiency or plan quality goals. Most work to...
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Conventional wisdom suggests that high-reputation banks will generally produce good securities to maintain their long-run reputation. We show with a simple model that, when securities are complex a high-reputation bank may produce assets that underperform during market downturns. We examine this possibility using a unique sample of $10.1 trillion of CLO, MBS, ABS, and CDOs. Contrary to the conv...
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Data Envelopment Analysis (DEA) is a nonparametric approach for measuring the relative efficiency of a decision making units consists of multiple inputs and outputs. In all standard DEA models semi positive real valued measures are assumed, while in some real cases inputs and outputs may take complex valued. The question is related to measuring efficiency in such cases. As far as we are aware, ...
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ژورنال
عنوان ژورنال: Systematic Biology
سال: 2004
ISSN: 1076-836X,1063-5157
DOI: 10.1080/10635150490424376