全球化：前景、潜力与问题

本文扼要阐述了经济全球化发展的前景和潜力,并运用李嘉图模型对全球化可能导致的经济损害作出论证分析进而说明,尽管经济学家在极大程度上趋向于将全球化视为基本良性的现象,但全球化仍然对某些国家（包括发达国家）带来经济损害,及对部分人群可能造成极其痛苦的后果。不过,源自于全球化的不断增长的竞争压力,会加强创新和增长,从长远来看,的确对每个国家有利。     

自媒体时代下当代大学生学习状况分析及建议

自媒体在信息收集与信息传递过程中起着不可替代的作用.作为最主要受众之一的大学生群体在当下自媒体时代中享受着便利,也遭遇着诸多诱惑.为了应对这些问题,需要政府、学校以及社会来共同努力,为当代大学生营造一个良好的自媒体环境.     

世界即将迎来人民币时代

正英国财政大臣乔治·奥斯本(George Osborne)在近期访问上海时表示:虽然人民币目前的市场知名度还不是很高,但在我有生之年,人民币将会变成几乎和美元一样无人不知的货币。人民币地位的任何变化都离不开国际金融图景的深刻调整。但人民币目前的演进速度之快引人瞩目。作为交换中介以及计账单位,人民币将在3年内取得国际地位;而在     

美国控制温室气体排放的市场化政策选择

在历史上,美国习惯于采用指挥与控制法来减少污染物排放。然而,这种规制措施会降低产业部门的生产效率。文章引入基于市场机制的两种碳价政策,一是碳税,二是总量控制与交易计划,并对这两种政策选择的设计进行了探讨,对二者在不确定性条件下的减排效果、促进政府税收、加强行政管理等方面的差异进行了比较,认为采用一种将碳税和总量控制与交易计划结合在一起的综合性碳价政策,在效率和分配方面要优于指挥与控制法。     

谷歌盈利能否持续增长？

业绩有所恢复，但仍不尽如人意，至少对谷歌公司而言是不够的.     

星空：追星直到天尽头

浩瀚的星空总能激发人的好奇心，其中还含有一种唯美的情愫。理性派诉诸于科学探索，头脑中有一张详尽的天文图谱；浪漫派将一切交付于想象，不愿意掀开古老传说的面纱；牛郎织女与寂寞的嫦娥，偕同二十八星宿，当轻罗小扇扑流萤之时，守护着一代代人对星空的梦想。     

Program Evaluation and Review Technique (PERT) in Construction Schedule Risk Assessment

Construction project scheduling is one of the most critical factors for project success measurement.Not only for the project planning but for construction process management,the scheduling is the basic tool for communication between the owner and the project manager.By developing the schedule before the project starts,the owner knows in advance that the expected timeline of the project.By preparing construction process scheduling,the owner and general contractor can better manage the subcontractors,sub-trades progress,materials storage and deliveries,labors schedule and equipment set up which will eventually save time,money and hassle.Basically,Critical Path Method(CPM) is commonly used in the construction industry.CPM is a deterministic method that assumes that through the network,there is at least one path that determines the project duration and that the path is the critical path.CPM does not consider the uncertainty in the activities;rather it assumes that each activity can be finished in the given situation.Program Evaluation and Review Technique(PERT) is a stochastic technique which is based on the assumption that the duration of a single activity can be described by a probability density function.PERT takes into account the uncertainty during the construction process and has been created out of the need to plan,schedule and control complex projects with many uncertainties.The PERT approach is stated in some books and papers,but there is no deep investigation on the application in the schedule risk assessment.This paper investigates the PERT work process and takes a valuable try on the construction schedule risk assessment by using case studies.The utilization in the estimate the construction liquidated damage with the uncertainties is performed,which also can be used in the insurance company to calculate the insurance premium.     

投资与债务不能代替消费

美国自冬天结束后就有了一丝温暖,股票投资有了一些可观的回报。在2011年第四季度积极势头的基础上,2012年一季度,投资热情一路看涨。正如笔者上季度所提到的,市场波动几乎会永久地存在,投资者情绪在逃避风险和接纳风险之间翻来覆去,账户中的资产从股票到货币型基金来回变化,这种现象在我们看来也几乎见惯不