虚拟衍生企业的竞争力研究

本文主要介绍有关衍生企业和虚拟组织的最新学说。并且,在融合这两种学说的基础上,探讨政府科研机构转移高技术成果的新模式——虚拟衍生企业模式。以求说明建立虚拟衍生企业、迅速形成核心竞争力,对于发展落后国家的高技术产业具有极为重要的作用。结合中国实际,本研究认为,虚拟衍生企业模式为中国的科研体制和企业体制的改革提供了一条新思路。     

Double unit root tests for cross-sectionally dependent panel data

This paper proposes various double unit root tests for cross-sectionally dependent panel data. The cross-sectional correlation is handled by the projection method [P.C.B. Phillips and D. Sul, Dynamic panel estimation and homogeneity testing under cross section dependence, Econom. J. 6 (2003), pp. 217–259; H.R. Moon and B. Perron, Testing for a unit root in panels with dynamic factors, J. Econom. 122 (2004), pp. 81–126] or the subtraction method [J. Bai and S. Ng, A PANIC attack on unit roots and cointegration, Econometrica 72 (2004), pp. 1127–1177]. Pooling or averaging is applied to combine results from different panel units. Also, to estimate autoregressive parameters the ordinary least squares estimation [D.P. Hasza and W.A. Fuller, Estimation for autoregressive processes with unit roots, Ann. Stat. 7 (1979), pp. 1106–1120] or the symmetric estimation [D.L. Sen and D.A. Dickey, Symmetric test for second differencing in univariate time series, J. Bus. Econ. Stat. 5 (1987), pp. 463–473] are used, and to adjust mean functions the ordinary mean adjustment or the recursive mean adjustment are used. Combinations of different methods in defactoring to eliminate the cross-sectional dependency, integrating results from panel units, estimating the parameters, and adjusting mean functions yields various available tests for double unit roots in panel data. Simple asymptotic distributions of the proposed test statistics are derived, which can be used to find critical values of the test statistics.

We perform a Monte Carlo experiment to compare the performance of these tests and to suggest optimal tests for a given panel data. Application of the proposed tests to a real data, the yearly export panel data sets of several Latin–American countries for the past 50 years, illustrates the usefulness of the proposed tests for panel data, in that they reveal stronger evidence of double unit roots than the componentwise double unit root tests of Hasza and Fuller [Estimation for autoregressive processes with unit roots, Ann. Stat. 7 (1979), pp. 1106–1120] or Sen and Dickey [Symmetric test for second differencing in univariate time series, J. Bus. Econ. Stat. 5 (1987), pp. 463–473].     

Perceptions of Life Quality among the Korean Mass Public: Unraveling their Dynamics and Standards

South Korea is widely known as an Asian model of economic development and democratization. Yet until now, research has not shown whether the country’s successful transition to democracy and market capitalism has enabled ordinary citizens to experience a life of happiness and satisfaction in their private and public lives. To address this question, this study analyzes a 2002 Euromodule survey of the Korean electorate designed to appraise the quality of life as a whole and in its various important domains. Results of the analysis reveal that a substantial minority of South Koreans still leads undesirable lives full of unhappiness and dissatisfaction. Furthermore, among the socioeconomically deprived, more people report deteriorations rather than improvements in their living conditions over the past five years. On the basis of these findings, we conclude that the surging forces of democratization and marketization can hinder ordinary people from experiencing a better quality of life by motivating them to compare themselves with other people in better situations to a greater extent than they did under past circumstances.     

Avowed happiness as an overall assessment of the quality of life

The concept of happiness has been mistakenly identified with feelings of pleasure in recent studies of quality of life. This paper clarifies the meaning of the concept ‘happiness’ and establishes grounds for its proper use in scholarly research. In addition, an empirical test of four major accounts of happiness derived from a careful review of philosophical and empirical literature is undertaken to propose a theory of happiness. The theory suggests that happiness is primarily a product of the positive assessments of life situations and favorable comparisons of these life situations with those of others and in the past. The various personal characteristics of an individual and the resources in his command, such as sex, age and income, influence happiness mostly through their effects upon the two psychological processess of assessment and comparison.     

Environmental effects on perceptions of life quality in Korea

Both in industrialized and industrializing countries environment is widely believed to be an important contributing source of the quality which people seek to bring to their lives. Yet, quality of life researchers have made little effort to determine the exact nature of environmental effects on perceptions of quality of life. This paper examines the individual and joint effects of community, housing and household on the levels of satisfaction, dissatisfaction, pleasure, and worry which Korean people experience.     

Status of organization–public relationship research from an analysis of published articles, 1985–2004

This study analyzes trends and patterns of research about organization-public relationships (OPR) through a content analysis of articles published between 1985 and 2004. The current status of OPR studies suggests that we have made progress in OPR research over the past two decades but need to explicate, replicate and extend the existing studies and cumulate the research trend.     

LONG-RUN STRUCTURAL MODELLING

The paper develops a general framework for identification, estimation, and hypothesis testing in cointegrated systems when the cointegrating coefficients are subject to (possibly) non-linear and cross-equation restrictions, obtained from economic theory or other relevant a priori information. It provides a proof of the consistency of the quasi maximum likelihood estimators (QMLE), establishes the relative rates of convergence of the QMLE of the short-run and the long-run parameters, and derives their asymptotic distributions; thus generalizing the results already available in the literature for the linear case. The paper also develops tests of the over-identifying (possibly) non-linear restrictions on the cointegrating vectors. The estimation and hypothesis testing procedures are applied to an Almost Ideal Demand System estimated on U.K. quarterly observations. Unlike many other studies of consumer demand this application does not treat relative prices and real per capita expenditures as exogenously given.     

Prenatal Cardiac Function and Postnatal Cognitive Development: An Exploratory Study

Fetal cardiac function was measured at 24, 30, and 36 weeks gestation and quantified in terms of heart rate, variability, and episodic accelerations. Children's representational capacity was evaluated at 27 months in terms of language and play. Thirty‐ and 36‐wcek‐old fetuses that displayed greater heart‐rate variability and more episodic accelerations, and fetuses that exhibited a more precipitous increase in heart‐rate variability and acceleration over gestation achieved higher levels of language competence. Thirty‐six‐week‐old fetuses with higher heart‐rate variability and accelerations, and steeper growth trajectories over gestation, achieved higher levels of symbolic play. Cardiac patterning during gestation may reflect an underlying neural substrate that persists through early childhood: Individual variation in rate of development could be stable, or efficient cardiac function could positively influence the underlying neural substrate to enhance cognitive performance.     

Child health in Peru: importance of regional variation and community effects on children's height and weight

In developing countries, height and weight are good indicators of children's health and nutritional status. Maternal education has been accepted as one of the most important influences on child health. Using the 2000 Demographic and Health Survey of Peru, however, I find that the effect of maternal education varies as a function of region. In the most prosperous urban region, maternal education is less important for child health than in poor rural areas, and a higher level of education has a greater effect in rural areas. Multilevel analysis shows that a significant part of the observed correlation between maternal education and child health is moderated by regional differences and community characteristics. The finding suggests that Peruvian public policy should emphasize resource redistribution as well as women's education, and that investment in maternal education should be considered within regional contexts to enhance child health in rural areas.     

A Study of the Development of Alcohol Use Disorder in Muslim Immigrant Workers in Korea

Abstract

This study examines the process by which Muslim immigrant workers, prohibited by their religion from drinking, develop alcohol use disorder when working in Korea. Participants were seven male immigrant workers who have lived in Korea for 6–10?years and all experienced a change in immigrant status, shifting from registered to unregistered. Utilizing grounded theory devised by Strauss and Corbin, 87 concepts, 24 subcategories, and 10 categories were derived as a result. By converting these categories into a paradigm model, participants moved through stages of “self-monitoring,” “confusion,” “self-despair,” and “daily collapse” as they developed alcohol use disorder, and began to take on an existence as drifters, not settling into life in Korea. Their “learning experiences of drinking to survive turning into experiences of causing social death” is considered a core category. The study’s results suggest that a rehabilitation program for immigrant workers needs to be developed wherein the program not only enables them to reflect on their current existence but also allows them to develop specific coping skills. Future research should be broadened to consider social support mechanisms and viewpoints of other people, including female immigrant workers, and local community members in close contact with Muslim immigrant workers.