Boolean Rings that are Baire Spaces

∗ The present article was originally submitted for the second volume of Murcia Seminar on Functional Analysis (1989). Unfortunately it has been not possible to continue with Murcia Seminar publication anymore. For historical reasons the present vesion correspond with the original one.Weak completeness properties of Boolean rings are related to the property of being a Baire space (when suitably topologised) and to renorming properties of the Banach spaces of continuous functions on the corresponding Stone spaces

Finitely fibered Rosenthal compacta and trees

We study some topological properties of trees with the interval topology. In particular, we characterize trees which admit a 2-fibered compactification and we present two examples of trees whose one-point compactifications are Rosenthal compact with certain renorming properties of their spaces of continuous functions.Comment: Small changes, mainly in the introduction and in final remark

Constitutional Law - Privilege Against Self-Incrimination - Danger of Prosecution in Other Jurisdictions

Defendant, a witness called by the New Hampshire attorney general in an investigation of subversive activities, was granted statutory immunity in New Hampshire from criminal prosecution which might arise from his testimony and was ordered to testify. Since any disclosures would create serious danger of prosecution by the United States and Massachusetts, whose agencies were also investigating his activities, defendant refused to testify despite the grant of immunity, invoking the privilege against self-incrimination guaranteed by the state constitution. He was found guilty of contempt, subject to his exceptions regarding the constitutionality of the immunity statute. On hearing before the state supreme court, held, exceptions overruled, one justice dissenting. The constitutional privilege may be invoked only if there is danger of prosecution within the state. Since this danger is removed by the grant of immunity, the immunity statute, being as broad as the privilege, is constitutional. Wyman v. De Gregory, (N.H. 1957) 137 A. (2d) 512

Contracts - Statute of Frauds - Signature Applicable to Only Part of a Memorandum

Plaintiff buyer sought specific performance of an alleged contract for the sale of real estate. The instrument, denominated deposit receipt, acknowledged receipt of the deposit, and then set forth the terms of the trade. This was signed By Raymond Asmar, the alleged agent of the seller, in the place where the broker normally signs. Following this were two provisions. One, signed by plaintiff, stated that he agreed to purchase the property and that he confirmed the contract. A similar provision immediately following was not signed by defendant seller. The district court dismissed for failure to state a claim on which relief could be granted. On appeal, held, affirmed, one judge dissenting. The agreement does not satisfy the Florida statute of frauds. Asmar did not sign as defendant\u27s agent to sell; his signature merely acknowledged receipt of the money. Moritt v. Fine, (5th Cir. 1957) 242 F. (2d) 128

Corporations - Clayton Act - Service of Process on Alien Corporations Through Their Local Subsidiaries

Two affiliated German corporations, one of which is the defendant, established a jointly owned subsidiary in New York. Three members of the subsidiary\u27s five-man board of directors are officers or directors of the German parents, while a fourth is a former employee sent to this country to manage the subsidiary. The American company is devoted exclusively to the business of the German parents. It assists in the negotiation of contracts, although it has no power to bind the parents, advises with respect to patents, and makes infrequent sales and purchases. For these services, it receives a flat fee plus a five percent price differential on the sales and purchases made for the parents. Although the subsidiary\u27s officers have appreciable freedom in day-to-day action, any expenditure which will increase its budget must be approved by the parent corporations. A subpoena, addressed to defendant in connection with a grand jury investigation of possible antitrust violations, was served on the assistant treasurer of the American subsidiary. On defendant\u27s motion to quash service, held, denied. The subsidiary is the alter ego of the German parents; therefore, defendant is found in this country within section 12 of the Clayton Act. In re Siemens & Halske A. G., Berlin, Germany, (S.D. N.Y. 1957) 155 F. Supp. 897

Plasticity in transmission strategies of the malaria parasite, Plasmodium chabaudi : environmental and genetic effects

Parasites may alter their behaviour to cope with changes in the within-host environment. In particular, investment in transmission may alter in response to the availability of parasite resources or host immune responses. However, experimental and theoretical studies have drawn conflicting conclusions regarding parasites' optimal (adaptive) responses to deterioration in habitat quality. We analyse data from acute infections with six genotypes of the rodent malaria species to quantify how investment in transmission (gametocytes) is influenced by the within-host environment. Using a minimum of modelling assumptions, we find that proportional investment in gametocytogenesis increases sharply with host anaemia and also increases at low parasite densities. Further, stronger dependence of investment on parasite density is associated with greater virulence of the parasite genotype. Our study provides a robust quantitative framework for studying parasites' responses to the host environment and whether these responses are adaptive, which is crucial for predicting the short-term and evolutionary impact of transmission-blocking treatments for parasitic diseases

A fundamental test for stellar feedback recipes in galaxy simulations

Direct comparisons between galaxy simulations and observations that both reach scales < 100 pc are strong tools to investigate the cloud-scale physics of star formation and feedback in nearby galaxies. Here we carry out such a comparison for hydrodynamical simulations of a Milky Way-like galaxy, including stochastic star formation, HII region and supernova feedback, and chemical post-processing at 8 pc resolution. Our simulation shows excellent agreement with almost all kpc-scale and larger observables, including total star formation rates, radial profiles of CO, HI, and star formation through the galactic disc, mass ratios of the ISM components, both whole-galaxy and resolved Kennicutt-Schmidt relations, and giant molecular cloud properties. However, we find that our simulation does not reproduce the observed de-correlation between tracers of gas and star formation on < 100 pc scales, known as the star formation 'uncertainty principle', which indicates that observed clouds undergo rapid evolutionary lifecycles. We conclude that the discrepancy is driven by insufficiently-strong pre-supernova feedback in our simulation, which does not disperse the surrounding gas completely, leaving star formation tracer emission too strongly associated with molecular gas tracer emission, inconsistent with observations. This result implies that the cloud-scale de-correlation of gas and star formation is a fundamental test for feedback prescriptions in galaxy simulations, one that can fail even in simulations that reproduce all other macroscopic properties of star-forming galaxies.Comment: 13 pages, 10 figures, accepted for publication in MNRA

The impact of host species and vector control measures on the fitness of African malaria vectors

Many malaria vector mosquitoes in Africa have an extreme preference for feeding on humans. This specialization allows them to sustain much higher levels of transmission than elsewhere, but there is little understanding of the evolutionary forces that drive this behaviour. In Tanzania, we used a semi-field system to test whether the well-documented preferences of the vectors An. arabiensis and An. gambiae s.s. for cattle and humans respectively are predicted by the fitness they obtain from host-seeking on these species relative to other available hosts. Mosquito fitness was contrasted when humans were fully exposed, and when they were protected by a typical bednet. The fitness of both vectors varied between host species. The predicted relationship between host preference and fitness was confirmed in An. arabiensis, but not in An. gambiae s.s. whose fitness was similar on humans and other mammals. Use of typical, imperfect bednets generated only minor reductions in An. gambiae s.s. feeding success and fitness on humans, but was predicted to generate a significant reduction in the lifetime reproductive success of An. arabiensis on human relative to cows. This supports the hypothesis that such human-protective measures could additionally benefit malaria control by increasing selection for zoophily in vectors

Embezzled Funds as Taxable Income: A Study in Judicial Footwork

The James case might not be worthy of extensive comment if its only significance rested on the decision that embezzled funds constitute taxable income in the year of misappropriation. But close analysis of the five separate opinions that were written indicates that James may have considerable significance beyond its precise holding