Scholarly communication in an electronic environment: problems and challenges

Thanks to remarkable feats of international cooperation over the last 50 years librarians have produced and maintained a string of standards which collectively have made the identification of almost any published item a straightforward task (UBC), and have changed interlibrary document supply from a peripheral operation to a core activity (UAP). The system runs so smoothly that it is taken for granted and its lessons are not being used to inform discussions on the emergence of exactly the same issues in the electronic environment. The Internet is seen as a great and liberating development, but it is not a neutral one, and it requires very substantial international effort if it is to be made usable for sustained scholarly communication rather than short-term gratification. The preservation and archiving of electronic information has only just begun to surface as a very complex issue. An electronic environment is being created which is inimical to scholarship and which is largely being ignored by commercial and entertainment forces that are irrelevant to the scholarly process. A much more active approach from the library profession is required

Information policy for a new millennium

Previous revolutions, the Agrarian and Industrial, are examined and their features compared with the Information Revolution. Lessons are drawn from the comparison and a range of global issues identified. The nature of the Internet is considered and its pretensions argued to be inflated. The role of the state in developing an information society is discussed. A national information policy is identified as a feature and its application in and implications for Scotland are considered. Key features of an Internet culture are indicated and discussed, with lessons and conclusions for social development within the information society presented

Exploring barriers to organ donation in the African American communities of California

There are a disproportionate number of African-Americans on transplant waiting lists across the country. The outcomes of a transplant are greatly improved when the donor and the recipient are from the same ethnic group. Sadly, the demand for cadaver organs in the African-American community exceeds the supply. Researchers in the past have sought to identify barriers to organ and tissue donation. To date, the studies have been conducted in the eastern and southern regions of the United States. This study examines whether the previously identified barriers are applicable in the African-American communities of California. A revised version of the Bone Marrow Donation Intention Tool was administered both in person and online. A t-test was used for analysis. The findings revealed statistically significant agreement/disagreement statements. These statements indicated that the barriers to organ donation from other areas of the United States were not representative of the respondents on the west coast

Liquid bridging of cylindrical colloids in near-critical solvents

Within mean field theory, we investigate the bridging transition between a pair of parallel cylindrical colloids immersed in a binary liquid mixture as a solvent which is close to its critical consolute point $T_c$. We determine the universal scaling functions of the effective potential and of the force between the colloids. For a solvent which is at the critical concentration and close to $T_c$, we find that the critical Casimir force is the dominant interaction at close separations. This agrees very well with the corresponding Derjaguin approximation for the effective interaction between the two cylinders, while capillary forces originating from the extension of the liquid bridge turn out to be more important at large separations. In addition, we are able to infer from the wetting characteristics of the individual colloids the first-order transition of the liquid bridge connecting two colloidal particles to the ruptured state. While specific to cylindrical colloids, the results presented here provide also an outline for identifying critical Casimir forces acting on bridged colloidal particles as such, and for analyzing the bridging transition between them.Comment: 23 pages, 12 figure

Cumulative prospect theory and gambling

Whilst Cumulative Prospect theory (CPT) provides an explanation of gambling on longshots at actuarially unfair odds, it cannot explain why people might bet on more favoured outcomes. This paper shows that this is explicable if the degree of loss aversion experienced by the agent is reduced for small-stake gambles (as a proportion of wealth), and probability distortions are greater over losses than gains. If the utility or value function is assumed to be bounded, the degree of loss aversion assumed by Kahneman and Tversky leads to absurd predictions, reminiscent of those pointed out by Rabin (2000), of refusal to accept infinite gain bets at low probabilities. Boundedness of the value function in CPT implies that the indifference curve between expected-return and win-probability will typically exhibit both an asymptote (implying rejection of an infinite gain bet) and a minimum at low probabilities, as the shape of the value function dominates the probability weighting function. Also the high probability section of the indifference curve will exhibit a maximum. These implications are consistent with outcomes observed in gambling markets.

The Determinants of Progressive Era Reform: The Pure Food and Drugs Act of 1906

We examine three theories of Progressive Era regulation: public interest, industry capture, and information manipulation by the federal bureaucracy and muckraking press. Based on analysis of qualitative legislative histories and econometric evidence, we argue that the adoption of the 1906 Pure Food and Drugs Act was due to all three factors. Select producer groups sought regulation to tilt the competitive playing field to their advantage. Progressive reform interests desired regulation to reduce uncertainty about food and drug quality. Additionally, rent-seeking by the muckraking press and its bureaucratic allies played a key role in the timing of the legislation. We also find that because the interests behind regulation could not shape the enforcing agency or the legal environment in which enforcement took place, these groups did not ultimately benefit from regulation in the ways originally anticipated.

Effective interaction between a colloid and a soft interface near criticality

Within mean-field theory we determine the universal scaling function for the effective force acting on a single colloid located near the interface between two coexisting liquid phases of a binary liquid mixture close to its critical consolute point. This is the first study of critical Casimir forces emerging from the confinement of a fluctuating medium by at least one soft interface, instead by rigid walls only as studied previously. For this specific system, our semi-analytical calculation illustrates that knowledge of the colloid-induced, deformed shape of the interface allows one to accurately describe the effective interaction potential between the colloid and the interface. Moreover, our analysis demonstrates that the critical Casimir force involving a deformable interface is accurately described by a universal scaling function, the shape of which differs from that one for rigid walls.Comment: 19 pages, 11 figure