何时联盟？何时并购？

联合与并购同样是战略选择,这意味着如果选择其中一种战略就得放弃另外一种。如果公司在决策中正确地应用战略选择,他们将会取得更好的业绩。     

EBCT measured coronary artery calcium scores in asymptomatic life insurance applicants

EBCT measured coronary calcium is fast becoming a standard screening tool in asymptomatic patients with and without risk factors who apply for life insurance. Since atherosclerotic plaques become calcified as part of their natural history, the calcium score is an excellent measure of total atherosclerotic burden. Over the past 5 years, various clinical studies have confirmed the predictive value of the coronary calcium score for both soft (revascularization, MI) and hard (MI and sudden cardiac death) events incrementally and independently of traditional coronary risk factors identified by the Framingham Heart Study. Accurate assessment of cardiac mortality risk in asymptomatic applicants for life insurance should include both traditional risk factor assessments in combination with age and gender specific percentiles for coronary calcium. New data from both new and ongoing clinical trials will seek to further support the predictive value of coronary calcium scores as an independent and incremental predictor of hard cardiac events.     

中国能否统治世界？

据报道,中国经济总量已经超过日本,成为第二大经济体。于是,一些问题浮出水面：“中国必将取代美国成为全球第一大经济体？”“中国什么时候可以超过美国成为第一大经济体,如何超越？”“中美是否会因为经济地位的起落发生冲突？”对这些问题的评论开始在全球各大媒体迅速升温。     

What Holds Back the Second Generation? The Intergenerational Transmission of Language Human Capital Among Immigrants

In 2000 Census microdata, various outcomes of second-generation immigrants are related to their parents' age at arrival to the United States, and in particular whether that age fell within the "critical period" of language acquisition. We interpret this as an effect of the parent's English-language skills and construct an instrumental variable for parental English proficiency. Estimates of the effect of parent's English-speaking proficiency using two-stage least squares yield significant, positive results for children's English-speaking proficiency and preschool attendance, and significant, negative results for dropping out of high school and being below age-appropriate grade. (JEL J13, J24, J62).     

越南的经济困境

越南政府在危机面前反应迟钝的部分原因在于,共产党强硬的保守派和经济自由派出现了严重的路线分歧。在一个要取得多数人同意的政治系统里,要使领导人做出强硬的决定是十分困难的。     

结构改革与中国工业增长

1978年以来,中国工业在持续的结构改革中经历了强劲的增长和生产率水平的不断提高。本文估算了工业分行业随机前沿生产函数,发现1992年后,TFP增长超过了要素投入增长,但是TFP对工业增长的贡献在2001年后出现了下降。进一步对TFP增长分解后发现,由工业结构改革引致的行业间要素重置显然对改革开放期间中国工业生产率的提高乃至工业增长起到了实际推动作用,即结构红利是显著存在的,而2001年后要素配置效率的下降也成为同期TFP增长贡献份额下降的主要原因。因素回归分析显示,中国要素市场的改革和工业行业的结构调整主导了要素配置效率变化的总体走势,并造成了不同行业要素配置效率的显著差异。