Business drivers not sector membership determine the most effective production planning and control; a novel approach to a perennial problem

This paper outlines research aimed at developing novel planning and scheduling reference models for industrial sectors where the MRPII paradigm is not appropriate. It outlines the process mapping approach adopted, the data capture method developed for the case study companies, the use of ARIS (Scheer's) enterprise modelling tool, and the first stages in the production of sector reference models.     

A Hausman test for Brownian motion

New tests are proposed for the specification of the intraday price process of a risky asset, based on open, high, low, and close prices. Under the null of a Brownian process we derive two stochastically independent, unbiased volatility estimators. For a Hausman specification test we prove its equivalence with an F-test, consider its robustness against variation in drift and volatility, and analyze the power against an Ornstein–Uhlenbeck process, as well as a random walk with alternative distributions.     

Modeling Values for Anti-Terrorism Analysis

Decisions are made to achieve objectives. A qualitative list of the objectives for a decision is the foundation for a value model that unambiguously represents objectives in a quantitative manner. The objectives guide thinking and the value model provides a basis for analyzing alternatives to best meet the desired objectives. This article illustrates the usefulness of clearly identifying objectives and developing value models to support anti-terrorism analysis. It outlines procedures to develop value models for the Department of Homeland Security and for terrorist organizations. The later is useful to both design anti-terrorism alternatives and suggest possible terrorist priorities and actions. An example that develops a terrorist value model for the theft and misuse of plutonium is presented. Several uses of value models for anti-terrorist activities are discussed and suggestions for developing such value models are outlined.     

Managing Nuclear Waste from Power Plants

National strategies to manage nuclear waste from commercial nuclear power plants are analyzed and compared. The current strategy is to try to operate a repository at Yucca Mountain, Nevada, to dispose of high-level nuclear waste underground. The main alternatives involve temporary above-ground storage at a centralized facility or next to nuclear power plants. If either of these is pursued now, the analysis assumes that a repository will be built in 2100 for waste not subsequently put to use. The analysis treats various uncertainties: whether a repository at Yucca Mountain would be licensed, possible theft and misuse of the waste, innovations in repository design and waste management, the potential availability of a cancer cure by 2100, and possible future uses of nuclear waste. The objectives used to compare alternatives include concerns for health and safety, environmental and socioeconomic impacts, and direct economic costs, as well as equity concerns (geographical, intergenerational, and procedural), indirect economic costs to electricity ratepayers, federal government responsibility to manage nuclear waste, and implications of theft and misuse of nuclear waste. The analysis shows that currently building an underground repository at Yucca Mountain is inferior to other available strategies by the equivalent of $10,000 million to $50,000 million. This strongly suggests that this policy should be reconsidered. A more detailed analysis using the framework presented would help to define a new national policy to manage nuclear waste.     

A SEMI-PARAMETRIC MODEL FOR ASYMMETRIC INFORMATION IN HEALTH PLAN MARKETS

Two sources of asymmetric information in health markets are adverse selection where only individuals know their illness probability and their preventive effort to reduce illness probabilities. This effort is not observed by insurers, and thus individuals cannot be adequately compensated for their effort. I investigate whether asymmetric information plays a role in health care markets through a semi-parametric model that allows both adverse selection and preventive effort. I find that preventive effort plays a role in illness probabilities. If the United States implements universal health coverage, the currently uninsured population will exert less preventive effort, and their illness probabilities will increase. (JEL I11 , C14 )     

Constructing the Transition to Parenthood*

How is the transition to parenthood constructed in a context in which fatherhood and motherhood are therapeutically defined? Relying on ethnographic observations of 66 expectant and new parent couples assigned to 13 different parent educator‐led groups, we show how, with the arrival of a baby, a sense of transition is crafted and often amplified. Our analysis suggests that just as the overall life course is constructed through language and meaningful gesture, so also the transition to parenthood is constructed through verbal and nonverbal signification. Using a vocabulary of contrast and change, parent edu‐cators and expectant and new parents create a collective feeling that they are witnessing a transformation of major proportions. By emphasizing the idea that things are no longer the same, parent educators also establish themselves as authorities whose job it is to steer fathers and mothers through unfamiliar terrain. For their part, expectant and new parents not only listen to but often also replicate the parent educators’ vocabularies and, in so doing, further magnify distinctions between before parenthood and after, and between one stage of parenthood and another. Childbirth stands uncomfortably at the junction of the two worlds of nature and culture. Like death and disease it is a biological event, but the defining feature of biological events in human life is their social character. Ann Oakley (1980:7)     

ALTRUISM, MATCHING, AND NONMARKET INSURANCE

Incomplete market insurance gives rise to nonmarket arrangements for coinsurance. We find that the effort altruistically linked individuals take to avoid an accident increases with the degree of altruism. If the degree of altruism is sufficiently high, an economy with nonmarket insurance yields higher social welfare than an economy without nonmarket insurance. As altruism increases, the equilibrium level of effort approaches the second-best solution without the need for costly monitoring. Coinsurance is above (below) the socially optimal level if individuals place greater weight (less weight) on their own utility than on that of their partners.     

Discourses of multicultural coexistence (Tabunka Kyōsei) and the ‘old-comer’ Korean residents of Japan

This paper explores the discourses of ‘old-comer’ Korean communities (zainichi) in Japan in relation to the recent advent of notions of coexistence (kyōsei) and multiculturalism (tabunka). I adopt an analytical framework that has been used to critically examine Australian multiculturalism, recognising that although the Australian context is different, this analytical framework is useful for the examination in hand. I argue that although the discursive recognition of Japan as multicultural is an important step away from ubiquitous notions of monoculturality, this relatively new direction needs to be balanced with critical interrogation of how it is being represented. The results of this research clarify the positions adopted by the Korean diaspora in Japan and offer a possible alternative perspective on the way forward.