生物技术:一个烫手的市场

即使是生物技术公司能够带来丰厚利润的时候．投资者仍需谨慎小心。有关的建议是：确保你所投资的公司既能赚钱又有有前途的新产品。公司的产品越弱．投资失败的机会就越大。     

从"双缺口"到"双溢出"——我国引进外资的现状与对策分析

改革开放初期,由于缺乏建设资金,我国用各种优惠政策吸引外资以加快经济建设,取得了显著成效.但近些年来,在利用外资促进经济发展的过程中,外资流入与国内储蓄"双溢出"现象日益突出,这似乎与传统的利用外资"双缺口"理论相悖,但实际情况并非如此.本文分析论述了我国引进外资从"双缺口"到"双溢出"的变化过程及原因,并论述了在"双溢出"情况下应该如何引进外资.     

Question order effects in taste testing of beverages

The effect of order position has been demonstrated in marketing research, sometimes compromising survey results. This paper studies the influence of order position in product taste trials of carbonated beverages using a sequential monadic design. The authors measure attitude ratings across product trials rather than across products to examine the effect of order position on preference ratings.     

Strategy in research design and hypothesis testing

The efficiency of a research design may be measured in terms of the degree to which knowledge is enhanced within given resource constraints. Thus, two different types of research design, even though they contain the same number of expected observations, may differ considerably in the amount of information provided. An example is the number N of 32 observations obtained with an analysis of variance witheither 2 factors, 2 levels per factor and a replication of 8or 4 factors, 4 levels per factor and a replication of 2. We analyze and compare the relative efficiencies of regression and variance analysis models and their implications to research strategy development. Three major considerations are evaluated: (1) short versus long time horizon (interval until effects of a decision are realized), (2) small versus large cost of erroneous rejection of the Null Hypothesis and (3) gross versus refined stage of development of the research study. A set of general guidelines towards improved designs is developed.