生态学视角下的现代服务业集群最优规模的确定

从生态学的角度研究分析了现代服务业集群的生命周期,认为现代服务业集群中同样存在着一种负反馈机制,调节着系统中种群数量的增减,使之维持动态平衡,即认为现代服务业集群发展过程是一种＂均衡-非均衡-均衡＂的循环反复的过程。文章借用逻辑斯蒂方程进一步解释说明,即在有限的社会、经济、技术和生态资源下,现代服务业集群总会受某一阈值的制约,而由此形成的每一次均衡即是现代服务业集群在特定时空条件下的最优规模。     

5.12山崩地裂中 巍然矗立着万众一心的民族脊梁

公元2008年,中国天灾人祸频发。5月12日,大地最终以一场毁灭性的灾难将我们从迷梦中惊醒:人类如此无助,生命如此脆弱。钢筋水泥废墟下绝望的血肉之躯,特别是那些手捧课本的孩子们,从这一天开始,将永远纠缠撕扯着生者的心灵,这是一种无法安慰和忘怀的悲伤。多少年了,没有见过这么多的人流泪。5月19日,震后"一七",中华大地国旗低垂,警报声撕心裂肺,人民泪飞如雨。天安门广场上数万人含泪高呼:"四川加油!中国加油!"那是誓言,可以惊天地!那是悲愤,足以泣鬼神!寒冰火焰更番过,碧血热泪献春华。公元2008年,将是中华民族的又一次凤凰涅槃。光荣与苦难俱来,激情与哀伤交替,血液一次次沸腾,热泪一次次涌出。中国红再一次洋溢了我们的心灵与视野,并成为世界上最坚强、最耀眼的颜色。一切的灾难与障碍,你们最终会输,因为我们可以被打倒,会流泪,但不会被打败。,5.12的废墟上,已经流尽了我们的泪水,但苦难和极限之中表现出来的人性之高贵、友爱与坚韧,必将成为理想主义的与民族复兴的永恒基石。     

OAT,电视广告成功的事前诸葛

怎样推出一个一定能够成功的电视广告甲这是所有电视广告主们梦寐以求的事情。然而,这看似有点奢望的故事。实际却正在发生着。     

“日本型风险投资模式”的合理性分析

"日本型风险投资模式"是在"日本型经济体制"的基础上形成的,是雇日本经济条件下为降低风险投资交易成本的合理选择.政府的介入、规制和大企业控制对"日本型风险投资模式"的形成产生了很大的影响.通过与"美国古典型风险投资模式"对比得知,日本政府的适当介入和"日本型风险投资模式"用"组织"代替了"美国古典型风险投资模式"中的主体--"个人"的合理性,说明风险投资是一个相对的概念,是一种制度的创新,只有根据各国的国情建立的风险投资模式,才能最大限度地实现对创新的支持.     

试析社会思潮对高职院校学生的影响及教育对策

高职教育的根本任务是培养高素质的应用型人才和技能型人才。在改革开放和发展社会主义市场经济的过程中,各种社会思潮相继涌现,对高职院校学生的思想和生活产生深刻影响,对其人生观、世界观的影响利弊共存。文章提出要加强对社会思潮的研究,提高青年学生对不良社会思潮的辨别力,不断增强社会主义核心价值体系对青年高职大学生思想的引导力。     

查克·费尼:从商人到圣人

金钱是人类文化中最复杂的部分,但中国传统的儒家伦理学却相对简单清晰,即将义与利做成二元对立,为富就可能不仁。这种思想无疑具有时空局限性,因为在今天商品经济的复杂关系中,你得与他失常常不是简单的零和博弈,而     

Plan Evasion and Supply Instability in a Double-Track System

In the reforms of centrally planned economies (CPEs), variants of thedouble-track system as a transitional measure. While there have been somestudies of the system from the demand side, little effort has been spentby economists to analyze its consequences from the t supply side. Thispaper is an attempt to do so in a disequilibrium framework. We show thatgiven a particular form of plan evasion, it is possible for the plannedprice to affect output, a result which contrasts with that of a generalequilibrium model (Sicular, 1988). Moreover, quantum changes in supplycould take place, generating instability in the system. The model isextended into a two-product case, where we illustrate that supplyinstability may still take place. Some alleviating factors that reducefluctuations are then discussed.     

The Client Is King: Do Mutual Fund Relationships Bias Analyst Recommendations?

This paper investigates whether the business relations between mutual funds and brokerage firms influence sell‐side analyst recommendations. Using a unique data set that discloses brokerage firms’ commission income derived from each mutual fund client as well as the share holdings of these mutual funds, we find that an analyst's recommendation on a stock relative to consensus is significantly higher if the stock is held by the mutual fund clients of the analyst's brokerage firm. The optimism in analyst recommendations increases with the weight of the stock in a mutual fund client's portfolio and the commission revenue generated from the mutual fund client. However, this favorable recommendation bias toward a client's existing portfolio stocks is mitigated if the stock in question is highly visible to other mutual fund investors. Abnormal stock returns are significantly greater both for the announcement period and, in the long run, for favorable stock recommendations from analysts not subject to client pressure than for equally favorable recommendations from business‐related analysts. In addition, we find that, subsequent to announcements of bad news from the covered firms, analysts are significantly less likely to downgrade a stock held by client mutual funds. Mutual funds increase their holdings in a stock that receives a favorable recommendation but this impact is significantly reduced if the recommendation comes from analysts subject to client pressure.