Toward General Principles for Resilience Engineering

Maintaining the performance of infrastructure-dependent systems in the face of surprises and unknowable risks is a grand challenge. Addressing this issue requires a better understanding of enabling conditions or principles that promote system resilience in a universal way. In this study, a set of such principles is interpreted as a group of interrelated conditions or organizational qualities that, taken together, engender system resilience. The field of resilience engineering identifies basic system or organizational qualities (e.g., abilities for learning) that are associated with enhanced general resilience and has packaged them into a set of principles that should be fostered. However, supporting conditions that give rise to such first-order system qualities remain elusive in the field. An integrative understanding of how such conditions co-occur and fit together to bring about resilience, therefore, has been less clear. This article contributes to addressing this gap by identifying a potentially more comprehensive set of principles for building general resilience in infrastructure-dependent systems. In approaching this aim, we organize scattered notions from across the literature. To reflect the partly self-organizing nature of infrastructure-dependent systems, we compare and synthesize two lines of research on resilience: resilience engineering and social-ecological system resilience. Although some of the principles discussed within the two fields overlap, there are some nuanced differences. By comparing and synthesizing the knowledge developed in them, we recommend an updated set of resilience-enhancing principles for infrastructure-dependent systems. In addition to proposing an expanded list of principles, we illustrate how these principles can co-occur and their interdependencies.     

A Simple Toxicokinetic Model Exhibiting Complex Dynamics and Nonlinear Exposure Response

Uncertainty in model predictions of exposure response at low exposures is a problem for risk assessment. A particular interest is the internal concentration of an agent in biological systems as a function of external exposure concentrations. Physiologically based pharmacokinetic (PBPK) models permit estimation of internal exposure concentrations in target tissues but most assume that model parameters are either fixed or instantaneously dose-dependent. Taking into account response times for biological regulatory mechanisms introduces new dynamic behaviors that have implications for low-dose exposure response in chronic exposure. A simple one-compartment simulation model is described in which internal concentrations summed over time exhibit significant nonlinearity and nonmonotonicity in relation to external concentrations due to delayed up- or downregulation of a metabolic pathway. These behaviors could be the mechanistic basis for homeostasis and for some apparent hormetic effects.     

A measure of slope-rotatability for second order response surface experimental designs

In the design of experiments for estimating the slope of a response surface, slope-rotatability is a desirable property. In this paper, a measure is introduced that enables us to assess the degree of slope-rotatability for a given response surface design. The measure takes the value zero if and only if the design is slope-rotatable, and becomes larger as the design deviates from a slope-rotatable design. Examples of applying this measure to some response surface designs are also given.     

Import competition and job displacement: A case study of Korean manufacturing industries

This paper investigates the impact of import competition on job displacement in Korean manufacturing industries. Using a regression model for the period of 1993–2003, the empirical results show that import competition raises the job displacement rate in the Korean manufacturing sector but the elasticity is negligible in its magnitude. Worker characteristics, such as gender, age, job tenure, and education level, proved to be significant in determining the displacement rate. Characteristics of displaced workers in high import-competing industries are also investigated based on the survey data. Workers who lost their jobs in these sectors were slightly older, less educated, and had longer job tenure than the workers in the other groups.     

Exclusion by design: intersections of social,digital and data exclusion

ABSTRACT

As smart technologies such as artificial intelligence (AI), automation and Internet of Things (IoT) are increasingly embedded into commercial and government services, we are faced with new challenges in digital inclusion to ensure that existing inequalities are not reinforced and new gaps that are created can be addressed. Digital exclusion is often compounded by existing social disadvantage, and new systems run the risk of creating new barriers and harms. Adopting a case study approach, this paper examines the exclusionary practices embedded in the design and implementation of social welfare services in Australia. We examined Centrelink’s automated Online Compliance Intervention system (‘Robodebt’) and the National Disability Insurance Agency’s intelligent avatar interface ‘Nadia’. The two cases show how the introduction of automated systems can reinforce the punitive policies of an existing service regime at the design stage and how innovative AI systems that have the potential to enhance user participation and inclusion can be hindered at implementation so that digital benefits are left unrealised.     

Consumption in the Korean Wedding Ritual: Wedding Ritual Values, Consumer Needs, and Expenditures

Recently, consumer researchers have been interested in rituals that concisely express the consumption system in a culture. This article studies the Korean wedding ritual. The particular focus is on consumer values, needs, and expenditures related to Korean weddings. Research hypotheses were developed by analyzing the consumption phenomena in a sociocultural context and using focus groups and in-depth interviews. The author suggests that hedonic values relating to wedding rituals influence conspicuous and female-focused consumption. Implications of the study and further consumption research issues are discussed.     

The role of non-profit corporate foundations in Korea: Positive and negative perspectives

There are two opposing views on the role of private foundations, especially the corporate foundations. Korean people seem to think that corporate foundations have been used as a device to transfer the wealth of rich families with favourable tax treatment. Considering the curret status and past performance of corporate foundations, the evidence seems to lend support to this negative view at the moment. The corporate foundations have performed within a very limited range of activities and have not made many efforts to develop non-profit activities to meet the expectations of Korean society. The negative view does not imply that corporate foundations have not contributed to Korean society. But the negative view can be regarded as a criticism of the past performance of corporate foundations and the way they have been managed. Prepared for presentation at the Third International Conference of Research on Voluntary and Non-Profit Organizations, sponsored by Indiana University Centre on Philanthropy, March 1992.     

A general class of flexible Weibull distributions

We consider a linear combination of two logarithms of cumulative hazard functions and propose a general class of flexible Weibull distribution functions which includes some well-known modified Weibull distributions (MWDs). We suggest a very flexible Weibull distribution, which belongs to the class, and show that its hazard function is monotone, bathtub-shaped, modified bathtub-shaped, or even upside-down bathtub-shaped. We also discuss the methods of least square estimation and maximum likelihood estimation of the unknown parameters. We take two illustrated examples to compare the suggested distribution with some current MWDs, and show that the suggested distribution shows good performances.     

Being Canada's national citizen: difference and the economics of multicultural nationalism

This paper examines the ambivalent positioning of difference in western multicultural nation-states in the neoliberal moment. It does so by analyzing the multiple and contradictory ways that the figure of Governor General Adrienne Clarkson, a Chinese Canadian woman, was utilized in the service of Canadian nation-building. Much heralded as the first racialized minority (and second woman) to be appointed to the highest public position in the land, Clarkson was chosen to represent and define the Canadian nation to itself and to the international community because of, and not in spite of, her difference. Drawing on media and government texts, this paper highlights the narratives that shaped the meaning of Clarkson's appointment as well as the narratives that were negated. The author emphasizes how gender, in addition to class, race and ethnicity, was central to Clarkson's appointment by analyzing how the disassociation between women and Asian capital was key to her ability to speak for us as one of us. In addition to Canadian government and corporate elite courting of Asian capital, gender was also key to the other narratives that could not be spoken, Clarkson's interracial marriage and discourses of miscegenation.