Personal income taxation under mobility, exogenous and endogenous welfare weights, and asymmetric information

This paper analyses how governments should tax labour income accruing to a group of highly skilled and geographically mobile individuals who divide their time or career between several jurisdictions. The analysis differs from previous models on migration and taxation by addressing optimal regulation when agents work for several principals. Optimal taxation is developed for social welfare functions with exogenous and endogenous welfare weights. Marginal income taxes are applied for screening purposes, and the rates are lower with endogenous than with exogenous welfare weights. Received: 22 January 1998/Accepted: 3 July 1999)     

A two phases queueing system with Bernoulli vacation schedule under multiple vacation policy

This paper deals with a single server Poisson arrival queue with two phases of heterogeneous service along with a Bernoulli schedule vacation model, where after two successive phases service the server either goes for a vacation with probability p (0≤p≤1) or may continue to serve the next unit, if any, with probability q(=1−p). Further the concept of multiple vacation policy is also introduced here. We obtained the queue size distributions at a departure epoch and at a random epoch, Laplace Stieltjes Transform of the waiting time distribution and busy period distribution along with some mean performance measures. Finally we discuss some statistical inference related issues.     

On the mode of administering a questionnaire and responses to open-ended items

Concurrently administered personal and telephone surveys are compared to measure differences between the modes for identical questions. Speed of questioning is found to be greater in telephone interviews than personal interviews. The faster pace of telephone interviews is linked to shorter answers to open-ended items on the telephone. The tendency to reduce such responses is disproportionately exhibited by younger, affluent respondents who tend to provide detailed responses in personal interviews.     

The cost of children: May the collective approach to household behavior help?

The collective approach to household consumption behavior tries to infer from variables supposed to affect the general bargaining position of household members information on the allocation of consumptions goods and tasks among them. This paper investigates the extension of previous work to the case where children may be considered as a public consumption good by the two adult members of a household. The main question being asked is whether it is possible to retrieve from the aggregate consumption behaviour of the household and the relative earnings of the parents information on the allocation of goods between them and children. This alternative approach to the estimation of the ‘cost of children’ is contrasted with the conventional approach based on a ‘unitary’ representation of and demographic separability assumptions on household consumption behaviour. Received: 29 August 1997/Accepted: 26 November 1998     

基于结构方程模型的城市流动人口心理健康影响因素分析

利用清华大学"中国城镇化与劳动移民研究成人问卷"的数据信息进行结构方程模型建构,以此研究个体因素和社会因素如何具体影响流动人口心理健康。研究结果显示:女性流动人口心理健康状况相对于男性要差;教育因素对女性流动人口心理健康的影响更为明显,教育水平越高的流动人口心理状态表现更积极;经济因素对流动人口心理健康影响不显著;流动人口的社会交往程度越高,城市居民对流动人口的社会排斥程度越低,他们的心理健康状况就越好。因此,在关注流动人口时不能只关注经济因素,城市应创造一个更友善的社会环境来接纳流动人口,并提供更多的社会交往空间,使其在城市更健康快乐的生活。     

Rate efficient estimation of realized Laplace transform of volatility with microstructure noise

In this paper, we consider the problem of estimating the Laplace transform of volatility within a fixed time interval [0,T] using high‐frequency sampling, where we assume that the discretized observations of the latent process are contaminated by microstructure noise. We use the pre‐averaging approach to deal with the effect of microstructure noise. Under the high‐frequency scenario, we obtain a consistent estimator whose convergence rate is , which is known as the optimal convergence rate of the estimation of integrated volatility functionals under the presence of microstructure noise. The related central limit theorem is established. The simulation studies justify the finite‐sample performance of the proposed estimator.     

多媒体课件视觉效果与文本切换频率对文本理解的影响

采用3(课件视觉效果)×3(文本的切换频率)两因素混合实验设计,考察多媒体课件的不同视觉效果及文本的切换频率对理解文本内容的影响。结果显示:不同视觉效果多媒体课件的主效应极其显著,视觉效果Ⅱ优于视觉效果Ⅰ和视觉效果Ⅲ;不同的切换频率主效应显著,文本字数500左右的幻灯片切换5次效果较好;对课件的理想程度评定结果表明,被试对视觉效果Ⅱ的评价得分较高。     

美学范式:实践的生态和谐观

实践美学以马克思主义实践哲学为基础,把实践作为联系人和自然的纽带,把美的本质归结为“人的本质力量的对象化”,即美是人在对象上面的自我观照。实践美学的思想主要来源是马克思的《1844年经济学哲学手稿》,其中“自然人化”和“两个尺度”的论述对实践美学有重要的影响。今天,传统的实践观和旧有的主体性哲学范式已不尽符合现实要求。对中国当代的美学进行重释,使其理论基础由主体性哲学向主体间性哲学转换,以适应哲学和美学的未来发展趋势,是一个十分重要的课题。     

迷茫中的选择现实中的妥协——对我国刑诉案中证人出庭困境的理性批判

《刑事诉讼法》经过系统修改在我国颁布实行后,我国的刑事司法制度日益完善,更趋向于合理。但在具体考量刑事司法制度变革是否深入的问题时,证人怠于出庭逐渐成为衡量其成功与否的重要因素。对此问题的探究,不能仅站在国家管理者的高度凭惯性思考,需要研究者超越历史的局限,从证人对自身重大利益的关切,以及社会强势群体的示范导向和人情社会的惰性阻碍着眼,加以理性地批判。     

群体性突发事件中政府机会主义行为的演化博弈分析

群体性突发事件成为影响当前我国社会稳定和实现现代化平稳过渡的重要因素,但是研究主要是基于实践经验的概述和总结分析上,缺少合适的理论分析工具揭示群体性突发事件的演化规律和发展特征。本文尝试运用演化博弈理论建立了地方政府部门与社会弱势群体之间的演化博弈模型,分析了地方政府部门机会主义行为导致的群体性突发事件呈现扩大化的趋势。研究结果表明:(1)如果社会弱势群体的情绪和行动尚未激化,至多停留在集体上访或集会等体制内平和的诉求手段,机会主义的地方政府将采取高压强硬策略;此时博弈均衡结果是(妥协或平和诉求,强硬);(2)一旦弱势群体中出现少数分子采取了"打砸抢"等暴力抗争的行动,由于机会主义政府转而做出较大让步,从而诱导其他弱势成员相继采取暴力抗争行动,事态反而进一步呈现扩大趋势。因此,群体性突发事件处置过程中,地方政府的机会主义行为不仅延误事件处置的最佳时机,而且直接导致了事态的扩大化。最后结合数值分析和瓮安事件案例,剖析了地方政府部门采取的机会主义应急处置措施,以及本文理论模型的适用范围。