Organization communication regarding ISO 26000 practices in South Korea: focusing on the enlarged scope

ISO 26000, issued on November 1, 2010, has enlarged the scope of social responsibility (SR) from corporations to all types of organizations. This article examines how organizations that traditionally have not been concerned with this term, such as public or governmental institutions and nonprofit organizations, interpret this new standard and the notion of SR, especially in the South Korean context. For this research, we observed the SR-related reports and media activity of seven Korean organizations: Korean Standards Association (KSA), the Ministry of Knowledge Economy (MKE), Gangdong-gu Office (GDG), Christian Ethics Movement of Korea (CEMK), LG Electronics Union (LGEU), Collective Action (CA), and Working Together Corporation (WTCO). We also carried out interviews with experts in these organizations, who largely work on the subject. Using the organizing theory frame (enactment–selection–retention) of Karl E. Weick, we analyzed three elements of the organizational communication of these institutions: strategy, ISO 26000 messaging, and receivers of the information. ISO 26000 was first actively used in public organizations (e.g., KSA, MKE, and GDG) as a policy tool to expand the concept to all aspects of Korean society, and was later used in certain nonprofit organizations (e.g., LGEU and CEMK) as a new paradigm, creating new concepts such as union SR and churches’ SR that partially accept the international standard in different contexts. Some civil societies, such as CA and WTCO, observe the phenomenon in a passive way to see if it could promote the social values of their organizations. Lastly, in spite of the scope enlargement, we note that SR is still in the range of corporate SR, and the application process in South Korea shows that the social aspect is more easily ignored than the economic and environmental aspects.     

Conditional correlation in asset return and GARCH intensity model

In an asset return series, there is a conditional asymmetric dependence between current return and past volatility depending on the current return’s sign. To take into account the conditional asymmetry, we introduce new models for asset return dynamics in which frequencies of the up and down movements of asset price have conditionally independent Poisson distributions with stochastic intensities. The intensities are assumed to be stochastic recurrence equations of the GARCH type to capture the volatility clustering and the leverage effect. We provide an important linkage between our model and existing GARCH, explain how to apply maximum likelihood estimation to determine the parameters in the intensity model and show empirical results with the S&P 500 index return series.     

Terminological Interchange Between Sociology and Political Science*

Objectives. To determine how frequently disciplinary terminology moves from discipline to discipline and to measure how long it takes for a term to be established in another discipline. Methods. Using sociology and political science as case studies, core concepts in each discipline are identified and their usage in the home and the other (adoptive) discipline assessed through a content analysis of three top journals in each field. Results. Movement of concepts between the two disciplines is sparse, though political science is more of a borrower from sociology than the reverse. Conclusions. Interdisciplinary ideas have not been likely to flourish in leading disciplinary outlets over the past century, and there seems to be little reason to expect major departures from the patterns documented here.     

Drivers and Enablers That Foster Environmental Management Capabilities in Small‐ and Medium‐Sized Suppliers in Supply Chains

The limited capabilities and resources available within many small‐ and medium‐sized enterprises frequently hamper an effective response to environmental pressures, which in turn hurts large buying firms (i.e., customers). Using a case study method with multiple suppliers of two large buying firms, we mapped factors that initiated and improved environmental capabilities in small‐ and medium‐sized enterprises over time. Through several specific mechanisms, buyers' green supply chain management initiated and then enabled the improvement of suppliers' environmental capabilities. Independent of buyers, internal championing of environmental concerns also provided an impetus for small‐ and medium‐sized enterprise suppliers to acquire resources outside the supply chain. Thus, synergistic linkages emerged in supportive buyer‐supplier relationships, resource acquisition, and capability development. When these findings are combined with earlier research on larger suppliers, an integrative framework emerges that provides direction for suppliers, buyers, and public agencies seeking to improve environmental performance.     

The effects of income transfers on poverty reduction in people with disabilities in South Korea

Using a nationally representative sample dataset from the 2016 Korean Welfare Panel Study, we examined the anti‐poverty effects of income transfers in people with disabilities. Our findings indicate that in households with a person with a disability, income transfers decreased by 55.9% and 84.8% of the pre‐transfer poverty rate and poverty gap, respectively. Before income transfers, households with a person with a disability were 1.94 times more likely to be poor compared to those without a person with a disability. When income transfers were offered, the chance of being poor in the disability group was only 1.11 times higher than that in the non‐disability group. Findings from the aggregated data suggest that means‐tested income transfers were more effective in reducing poverty levels than social insurance or private income transfers. At the individual level, the provision of means‐tested programs was also more likely to decrease the likelihood of experiencing poverty than social insurance and private income transfers.     

On entropy goodness-of-fit test based on integrated distribution function

In this study, we consider an entropy-type goodness-of-fit (GOF) test based on integrated distribution functions. We first construct the test for the simple vs. simple hypothesis and then extend it to the composite hypothesis case. It is shown that under regularity conditions, the null limiting distribution of the proposed test is a function of a Brownian bridge. A bootstrap method is also considered and is shown to be weakly consistent. A simulation study and real data analysis are conducted for illustration.     

An evaluation of the bootstrap for model validation in mixture models

Bootstrapping has been used as a diagnostic tool for validating model results for a wide array of statistical models. Here we evaluate the use of the non-parametric bootstrap for model validation in mixture models. We show that the bootstrap is problematic for validating the results of class enumeration and demonstrating the stability of parameter estimates in both finite mixture and regression mixture models. In only 44% of simulations did bootstrapping detect the correct number of classes in at least 90% of the bootstrap samples for a finite mixture model without any model violations. For regression mixture models and cases with violated model assumptions, the performance was even worse. Consequently, we cannot recommend the non-parametric bootstrap for validating mixture models.

The cause of the problem is that when resampling is used influential individual observations have a high likelihood of being sampled many times. The presence of multiple replications of even moderately extreme observations is shown to lead to additional latent classes being extracted. To verify that these replications cause the problems we show that leave-k-out cross-validation where sub-samples taken without replacement does not suffer from the same problem.     

Double sampling |S| control chart with variable sample size and variable sampling interval

This study presents a control chart for monitoring shifts in the covariance matrix of a multivariate normally distributed process. This chart combines the double sampling, variable sample size and variable sampling interval features, and is called the DSVSSI |S| chart. A Markov chain approach is developed to design the DSVSSI |S| chart, by minimizing the average time to signal (ATS), for a specified shift size in the covariance matrix. The DSVSSI |S| chart has a better ATS performance compared to other existing charts. An example is given to illustrate the operation of the DSVSSI |S| chart.