Drivers of context-specific ICT use across work and nonwork domains: A boundary theory perspective

Most theories predicting technology use were conceived when information and communication technology (ICT) devices were less portable, had less functionality, and individuals experienced less permeability between work and nonwork domains. Thus, while individuals today widely use ICT for both professional and personal needs, there is limited knowledge about the validity of traditional models predicting ICT use within and across work and nonwork domains. Using a model based on boundary theory, border theory, and human agency perspective, this study empirically examines the predictors of ICT use across four contexts, namely work use on work and nonwork days, and nonwork use on work and nonwork days. The results, based on data collected from managers and professionals from different Canadian industries, suggest that different drivers may be affecting the four contexts of ICT use. While perceived usefulness of ICT is a significant predictor for both within-domain and across-domain ICT use, there are specific work and individual characteristics that drive across-domain ICT use. Using theories from work/nonwork literature, this paper presents a renewed view to predict context-specific ICT use beyond the traditional models.     

Heterogeneity of customers of personal image services: a segmentation based on value co-creation

The aim of this work is to gain an understanding of the heterogeneity of the customers of service firms dedicated to personal care. This comes from their participation in the value co-creation process. We later analyze if the distribution of the satisfaction variable is the same between the previously-identified groups. This analysis is carried out via a latent class segmentation. The empirical research data was obtained from a sample of users of firms from the Spanish sector of hairdressing and aesthetics. This is mostly made up of young, self-employed entrepreneurs and microenterprises. 547 questionnaires were correctly completed and included in the study. The use of the customers’ involvement in value co-creating as a segmentation criteria resulted in the users being put into two groups. It was thus verified that there are differences in the distribution of the satisfaction variable between the two groups studied. The main contribution of the study stems from considering the value co-creation behavior as a valid criterion for the segmentation of customers of aesthetics and personal care services. This facilitates the decision-making related to the marketing policies of the firms in the sector.     

东南亚区域发展与金融危机

本文从东南亚国家的发展角度探讨了其金融危机的必然性。认为始于 １９９７ 年的东南亚金融风暴并不是简单的金融信用危机，而是其经济发展模式的必然结果。经济发展过于依赖“外贸”和“外资”，为其经济发展的不稳定和爆发金融危机隐患之一；投资结构不合理，导致经济结构发展失衡，产业结构未能适时升级和转换，为其经济发展不稳定和日后爆发金融危机隐患之二；世界范围内区域经济一体化的冲击，动摇了东南亚国家经济基础，是其爆发金融危机的原因之三。     

A score test for non‐nested hypotheses with applications to discrete data models

In this paper it is shown that a convenient score test against non‐nested alternatives can be constructed from the linear combination of the likelihood functions of the competing models. This is essentially a test for the correct specification of the conditional distribution of the variable of interest. Given its characteristics, the proposed test is particularly attractive to check the distributional assumptions in models for discrete data. The usefulness of the test is illustrated with an application to models for recreational boating trips. Copyright © 2001 John Wiley & Sons, Ltd.     

Reflections on the perspectives of the global economy from the point of view of emerging economies

 Recently a number of emerging economies, with high inflation and various kinds of imbalances have experienced what has come to be referred to as dollarization– the phenomenon of currency substitution where the dollar gradually replaces the national currency in the performance of its fundamental functions. The phenomenon is most commonly encountered as a component of the exchange-rate-based stabilization programs implemented in a number of emerging economies in Latin America, Asia and the Middle East. The fundamental issue we want to explore is whether this process forces the monetary authorities of emerging economies to act with their hands tied, as if caught in a trap. It is argued that when the expansion of liquidity and domestic credit is determined by the quantity of foreign-exchange reserves, an independent monetary policy vanishes and national sovereignty itself is shackled. Since this scenario typically occurs in a world of increasing globalization of finance, this paper also discusses (with reference to emerging economies) the risks and implications of capital inflows for macroeconomic policy autonomy, economic instability, and vulnerability to external shocks.     

Wheat policy and economy-wide reform in Brazil

In recent years, the wheat sector in Brazil has moved from governmental protection and public intervention to a free market and privatization. In this study, those changes are analyzed through measures of governmental intervention on nominal rates of protection and on welfare of producers and consumers. Elasticities of demand and supply of wheat are estimated, and the effects of changes in policies are analyzed under official and shadow exchange rates. Welfare measures indicate that almost US$ 8 billion were spent from 1970 until 1989 with policies to subsidize producers and consumers. The policy-induced stimulus to consumer demand exceeded the stimulus to domestic production, and self sufficiency in wheat declined. The reduction in wheat subsidies since 1989 was more than an isolated sector-specific policy. It was part of macroeconomic antiinflation policy, and it coincided with other economy-wide changes such as real appreciation and a decline in international commodity prices.     

物资流通企业EDI系统的建设

先对电子数据交换（ＥＤＩ）的工作原理者了简单的回顾，进而介绍了多个ＥＤＩ系统之间的通讯方式和各种通讯方式的比较，并着重介绍了第三方网络的选择依据。     

A multivariate innovations state space Beveridge–Nelson decomposition

The Beveridge–Nelson vector innovations structural time series framework is a new formulation that decomposes a set of variables into their permanent and transitory components. The proposed framework is flexible, modelling inter-series relationships and common features in a simple manner. In particular, it is shown that this new specification is simpler than conventional state space and cointegration approaches. The approach is illustrated using a trivariate data set comprising the GDP of Australia, the USA and the UK.