Bayesian inversion of geoelectrical resistivity data

Summary. Enormous quantities of geoelectrical data are produced daily and often used for large scale reservoir modelling. To interpret these data requires reliable and efficient inversion methods which adequately incorporate prior information and use realistically complex modelling structures. We use models based on random coloured polygonal graphs as a powerful and flexible modelling framework for the layered composition of the Earth and we contrast our approach with earlier methods based on smooth Gaussian fields. We demonstrate how the reconstruction algorithm may be efficiently implemented through the use of multigrid Metropolis–coupled Markov chain Monte Carlo methods and illustrate the method on a set of field data.     

The Flip Side of Holland Type Congruence: Incongruence and Job Satisfaction

This study examined the relationship between Holland type (Realistic, Investigative, Artistic, Social, Enterprising, and Conventional; Holland, 1959, 1997) congruence and incongruence (i.e., lack of fit between an occupation's 3‐letter Holland code and a person's lowest 3 Holland interest types) and tested whether incongruence predicts unique variance in satisfaction beyond congruence. Results from an employee sample suggest that incongruence and congruence are distinct constructs (in that they correlated r = ‐.32) and that beyond congruence, incongruence did not predict variance in overall or intrinsic job satisfaction. Counselors are urged to assess both congruence and incongruence, but to focus on helping clients to identify best‐fitting occupations when possible, rather than to merely avoid incongruent occupations.     

Complement to a comparative analysis of heuristics for the <Emphasis Type="Italic">p</Emphasis>-median problem

A recent comparison of evolutionary, neural network, and scatter search heuristics for solving the p-median problem is completed by (i) gathering or obtaining exact optimal values in order to evaluate errors precisely, and (ii) including results obtained with several variants of a variable neighborhood search (VNS) heuristic. For a first, well-known, series of instances, the average errors of the evolutionary and neural network heuristics are over 10% and more than 1000 times larger than that of VNS. For a second series, this error is about 3% while the errors of the parallel VNS and of a hybrid heuristic are about 0.01% and that of parallel scatter search even smaller.     

The distribution of a federal entitlement: The case of adoption assistance

Adoption assistance entitlements support children whose birth parents cannot care for them. The entitlements are meant to offset the extra cost to adoptive families of raising children whose early adverse experiences leave them with special needs. Unlike other Social Security Act programs, adoption assistance is not federally administered but is administered by states or localities. State-to-state variation in administration of this federal entitlement leads to unequal treatment of similar children. Moreover, although adoption assistance is an entitlement for children, payments made by many states are systematically correlated with the characteristics of adoptive families.     

The quality of land surrounding the major urban centres of Canada,the United States and Britain

Prime agricultural land is the most productive and important foodland in a nation. When disproportionate amounts of prime farmland are located near to the major metropolitan areas of a country, national productive capacity can be adversely affected by continued urbanisation. The disproportionate location of prime agricultural land adjacent to major cities is compared in Canada, the U.S. and Britain. The bias is far larger in Canada than it is in the U.S. or Britain. Investigating the more urbanised regions of these countries, the bias of prime land with urban areas is found to be still more accentuated in Canada.     

Can we protect children from abuse? A review of three cases

Abused infants at risk of further abuse are not being protected for many reasons. The ability of a variety of professionals to recognize and manage abuse when it occurs is limited. The reasons for this are briefly presented. Three cases in which young infants were reinjured, one fatally, are presented. Continuing efforts to improve all parts of the child welfare system and community response system need to be made. In this way, infants at risk will be better protected in our society.     

A dream come true – no more residential care. A corrective note

This note is about the attempt by the Australian State and Territory child care and protection systems to do without residential programmes. It traces the process of moving to this position and the historical and policy imperatives that supported this service direction. It also outlines the consequences of the absence of 24 hours-a-day 7-days-a-week residential education or treatment programmes for difficult and disturbed young people. It is both a cautionary and corrective note designed to underline the need for some specialised and highly selective residential programmes as part of any mature child care and protection system. This is something that Australia forgot.