GETTING IT DONE: DYNAMIC INCENTIVES TO COMPLETE A PROJECT

A principal wants an agent to complete a project. The agent undertakes unobservable effort, which affects in each period the probability that the project is completed. We characterize the contracts that the principal sets, with and without commitment. With full commitment, the contract involves the agent's value and wage declining over time, in order to give the agent incentives to exert effort. The best sequentially rational equilibrium for the principal also involves the agent's wage declining over time, while the worst sequentially rational equilibrium for the principal has a constant wage (and is in fact the unique stationary equilibrium). The best (weakly) renegotiation‐proof equilibrium for the principal is achieved by a constant wage that maximizes the principal's payoff, conditional on wages being constant. We compare these solutions to the efficient outcome.     

SLOW INFORMATION DIFFUSION AND THE INERTIAL BEHAVIOR OF DURABLE CONSUMPTION

This paper studies the aggregate dynamics of durable and nondurable consumption under slow information diffusion (SID) due to noisy observations and learning within the permanent income hypothesis framework. We show that SID can significantly improve the model's predictions on the joint behavior of income, durable consumption, and nondurable consumption at the aggregate level. Specifically, we find that SID can significantly improve the model's predictions for: (i) smoothness in durable and nondurable consumption, (ii) autocorrelation of durable consumption, and (iii) contemporaneous correlation between durable and nondurable consumption.     

HOW DO INFORMAL AGREEMENTS AND REVISION SHAPE CONTRACTUAL REFERENCE POINTS?

The notion of contracts as reference points provides the basis for a deeper understanding of important phenomena such as the employment contract, vertical integration, firm scope, authority, and delegation. Previous experiments lend support to this notion but they ignore realistic aspects of trading relationships such as informal agreements and ex‐post renegotiation or revision. Here we show that the central behavioral mechanism underlying contractual reference points is robust to such considerations. Our data reveal that informal agreements can mitigate the trade‐off between rigidity and flexibility but they do not fully resolve the problem of misaligned reference points. Our experiments also show that contract revision is a more nuanced process than the previous literature has recognized. We find, for example, that it is sometimes better for parties to write a simple (rigid) contract and then revise it ex post if needed, rather than to anticipate and include future contingencies in a (flexible) contract from the outset.     

CORRELATIONS AND CHARACTERIZATIONS OF THE UNIFORM DISTRIBUTION

Two characterizations of the uniform distribution on a suitable compact space are proved. These characterizations are applied to a number of particular examples of which the most interesting is the following: if X , Y and Z are independent n-vectors whose components are independent and identically distributed within a vector, then the pairwise independence of the product moment correlation coefficients between X , Y and Z implies that these vectors are normally distributed.     

International Impacts of protection: model structure and results for FC agricultural policy

A dynamic international commodity trade model is introduced that combines stochastic production with three features: multimarket dynamics, endogenous trade policy behavior, and endogenous stock-holding behavior. The significance of these features is illustrated using versions of the model with each excluded in turn. Their role in policy analysis is examined by using each version to measure the impacts of the grain-meat components of the European Community's Common Agricultural Policy. The absence of each is found to alter significantly the estimated terms of trade, trade volume, and welfare effects. Endogenous stock holding is found to be especially important when insulating trade policies are reprented in the model.     

环境会计控制的若干基本问题研究

企业环境破坏问题一直是当前学术界研究的焦点，但多数文献主要围绕着企业外部环境控制进行研究，而对企业内部的环境控制研究则较少。本文主要从企业内部环境控制角度进行研究，分析了环境会计控制的若干基本问题，并细化了会计第二报告体系进行具体的环境会计控制研究。     

Brief Analyses of Some Contradictory Characteristics of the Language Applied in Business Correspondence

Business correspondence are the indispensable tool in the practical process of business communication and interchange.Especially,as the communicated body of information,their language possesses specific characteristics.Rooted from the "Politeness Principle" and the "Cooperative Principle",the most distinctive epitome of it is the seven "C" principles.Based on the discussion of the seven "C" principles,this paper devotes itself to the analyses of the contradictory characteristics which occur frequently in the concrete business contexts,and then to examine the causes of these features.Ultimately,it will suggest more flexible and more widened perspective towards the creation of business correspondence and the language applied in them.     

Sociological consciousness as a component of linguistic variation1

While practice theory has provided a valuable framework for establishing connections between individual‐level sociolinguistic variation and social structures, Bourdieu's (1977) formulation of practice theory has been argued to inadequately address subjectivity. The sociologist C. Wright Mills' (1959) concept of the sociological imagination – consciousness of links among personal experiences, social structures, and historical processes – is posited as a partial solution, as it offers a framework for modeling one aspect of subjectivity. Use of the sociological imagination concept is demonstrated through a quantitative acoustic analysis of /o/ fronting in Worthington, Ohio, a Columbus suburb confronting acute urban sprawl. The distribution of /o/ fronting across 21 speakers largely resists traditional sociolinguistic explanations. A close analysis of four speakers' mental representations of the local tensions surrounding urban sprawl reveals significant differences which are argued to account for their variable use of fronted /o/.     

GOODNESS OF FIT FOR THE BINOMIAL DISTRIBUTION

Goodness of fit testing for the binomial distribution can be carried out using Pearson's X²_p statistic and its components. Applications of this technique are considered and compared with recently suggested empirical distribution function tests. Diagnostic use of components is discussed.     

铜盐催化剂对溴代苯酚聚合反应的影响

本文研究了不同铜盐对溴代苯酚聚合反应产率的影响,利用Taft取代基常数作为考察指标得出sum from(δ(?)>5.5)时,铜(Ⅱ)盐才有催化活性;分离出的铜(Ⅱ)盐中,当CuCl_2·2H_2o/CH_3ONa摩尔比为0.5时,对聚合反应有最大的催化活性.并提出了铜(Ⅱ)盐催化由铜(Ⅱ)——酚氧配合物中间体生成聚合物的单电子转移历程.