DEMOGRAPHY IN MACROECONOMIC MODELS: WHEN LABOUR SUPPLY MATTERS FOR ECONOMIC CYCLES

The issue of the onset of Malthusian cycles is investigated by means of a demo‐economic model incorporating the age structure of the population. It is shown that the delayed recruitment into the labour force is a major source of demo‐economic instability, potentially leading to sustained oscillations. We also compare different modelling strategies for age structure, by showing that the results of our general model are borne out by those provided by a simpler model, based on a representation of age structure via time delays, which allows a deeper mathematical analysis. This suggests that simplified delay models may be of great help in understanding the qualitative properties of complex age structure models.     

THE LATENT CHOICE. WHEN IT IS WORTH POSTPONING THE DECISION

We discuss choices among irreversible projects under uncertainty. This kind of problem was first posed studying natural resource utilization (Weisbrod, Arrow-Fisher), but our analysis may be applied to a wide class of phenomena. In an uncertain world, an economic agent, instead of committing himself to an irreversible decision, could prefer to postpone his choice waiting for better information. In this paper, we discuss the projects characteristics and the information qualities that make postponing the preferred choice. We use a Markov process with a three-period horizon, because it allows us to treat analitically the way in which information arrives over time.     

工资的事情有多大

在下以为工资是人的立身之本,职工也好,民工也好,监工也好,义工也好……都是靠它活命的!奖金可以忽冷忽热,忽多忽少,甚至可以没有了奖金,"因为这个月我们公司效益不好",但工资一分钱不能少(即使退休工资都不能少)。     

文化因素对国际商务谈判的影响及对策分析

中国的某家公司计划从日本购买一艘轮船,同时有几家日本公司表达了与该中国公司的合作意向。但其中一家日本公司行动比较快。这家日本公司首先向中国公司的管理层人士发出邀请,请他们到日本参观他们的公司及产品。这几个被邀请者到了日本之后受到了很周到的接待,不但参观该日本公司,而且还被安排游览日本一些特色景点。这几个人兴高采烈地回国后,对这家公司及其产品赞不绝口,提议就从这家购入需要的     

一边开会 一边看球——里约热内卢会议业速览

2014年,世界杯足球赛的圣火再次点燃巴西,照耀里约热内卢。一时间,里约热内卢犹似万千宠爱于一身的天之骄子,受到世人的瞩目。在这里,我们不仅可以欣赏到出神人化的球技,氤氲秀美的自然风光,激情似火的桑巴舞,还能感受到那洋溢着的浓浓的会议之风。     

微软品牌排名急剧下滑跌至第59位

亚洲IT服务市场增长迅速2011年将达559亿美元;时代赢客获6500万风险投资     

IFC发布《2008中国营商环境报告》中国营商环境改革位居全球前10名

4月22日,世界银行集团成员之一国际金融公司（IFC）与中国社会科学院财政与贸易经济研究所在北京共同发布了第一份《中国营商环境报告》。报告表明．中国各地方政府都在积极推进商业规制的改革．以为私营部门的发展提供更便利的营商环境。中国在营商环境改革方面位居全球前10名。     

ENERGY CONSIDERATIONS WHEN COOKING WITH SAUCEPANS

Greater efficiency in terms of utilization of energy in cooking can be achieved by reducing the use of small diameter saucepans. A sheet of household aluminium foil placed below the radiant ring of an electric cooker leads to small but significant energy savings. The life of rings could be shortened if a reflector is used without a saucepan.     

当马云遇到李连杰——第八届全球网商大会回顾

2011年9月9—10日,2011第八届全球网商大会在浙江省杭州市浙江省人民大会堂举行,本届大会主题是“开放,生态,共赢”,参会者达3000人。全球网商大会由中国电子商务协会和阿里巴巴集团主办,是中国规模最大的电子商务行业性会议。全球网商大会以及全球网商颁奖盛典目前是国际互联网特别是国际电子商务界最为瞩目的盛事。     

IT专栏

<正>PC大战又次上演联想IBM腹背受敌继去年12月8日联想并购案之后, 戴尔和惠普就明确表示,他们准备抢夺对该并购交易有不确定感的企业客户, 其他如Acer等品牌也在暗地里开始向联想在国内的领先优势发起挑战。从今年     

IT Information

A. "Banking Key Business Sys-tem" Has Been Introduced to ChinaBy Liu JinxiaThe Unihub company, which integrates tele-communication and IT technol-ogy( IT&T), has made some new actions in the field of banking service system ; it has intro-     

IT Information

A.Panda Brand Mobile PhoneWill Be Totally China-Made 》By Jiang YeqingIt was reported from the 2003 ChinaFirst Mobile Communication Forum and 4th CCID NewsBriefing on Users' Satisfaction of Chinese Mobile PhoneService that Nanjing Panda Electronics Co., Ltd would in-vest RMB200 million in developing a totally China-mademobile phone independently. The first mobile phone devel-     

WHEN IS THE SHORT RATE MARKOVIAN?

We answer this question in the very general context of the n-factor Heath, Jarrow, and Morton model for the evolution of the term structure of interest rates, with nonrandom volatility. the answer is that a constraint is imposed on the behavior of the volatility structure. We explain the importance of this result for the design of efficient numerical algorithms for the valuation of options on the term structure.     

塑造当代力度

生活在亚洲的人们似乎早已适应了充斥着钢筋水泥建筑的城市生活,而在欧洲或者南美洲,人们似乎对老式建筑和闲适的乡村生活更加青睐。所以,每当建筑师们在城市中架构出一个现代感十足的建筑时,总会遭到争议和排斥。而美好的东西经过时间洗礼后,又会逐渐被人接受,这也许就是当代建筑的魅力之一。     

南海的信息梦

当年哥伦布发现新大陆后有人说,这有什么稀奇,如果我去航海旅行,也会发现.哥伦布一笑,不作正面回答,他拿了一只鸡蛋问大家:谁能把这只鸡蛋竖起来?结果谁也无法竖起这只鸡蛋.哥伦布把鸡蛋一头往桌上轻轻一碰,鸡蛋就站在桌面上了.在座的朋友中立刻有人不服:这样竖鸡蛋,谁不会呢?