The combinatorics of open covers (II)

We continue to investigate various diagonalization properties for sequences of open covers of separable metrizable spaces introduced in Part I. These properties generalize classical ones of Rothberger, Menger, Hurewicz, and Gerlits-Nagy. In particular, we show that most of the properties introduced in Part I are indeed distinct. We characterize two of the new properties by showing that they are equivalent to saying all finite powers have one of the classical properties above (Hurewicz property in one case and in the Menger property in other). We consider for each property the smallest cardinality of metric space which fails to have that property. In each case this cardinal turns out to equal another well-known cardinal less than the continuum. We also disprove (in ZFC) a conjecture of Hurewicz which is analogous to the Borel conjecture. Finally, we answer several questions from Part I concerning partition properties of covers

Correlation studies of seventeen variables assumed to be predictive of success in foreign language study

The purpose of this thesis is to study the extent to which certain data in a student\u27s cumulative folder can be relied upon to predict success in the study of foreign languag

Alien Registration- Miller, Marion K. (South Portland, Cumberland County)

https://digitalmaine.com/alien_docs/20194/thumbnail.jp

Near-infrared line identification in type Ia supernovae during the transitional phase

We present near-infrared synthetic spectra of a delayed-detonation hydrodynamical model and compare them to observed spectra of four normal type Ia supernovae ranging from day +56.5 to day +85. This is the epoch during which supernovae are believed to be undergoing the transition from the photospheric phase, where spectra are characterized by line scattering above an optically thick photosphere, to the nebular phase, where spectra consist of optically thin emission from forbidden lines. We find that most spectral features in the near-infrared can be accounted for by permitted lines of Fe II and Co II. In addition, we find that [Ni II] fits the emission feature near 1.98 {\mu}m, suggesting that a substantial mass of 58Ni exists near the center of the ejecta in these objects, arising from nuclear burning at high density. A tentative identification of Mn II at 1.15 {\mu}m may support this conclusion as well.Comment: accepted to Ap

Braided strands of meaning : Mavis Gallant's language

This thesis grew out o£ the difficulties in classifying Gallant’s fiction. Critics, when examining the works of Mavis Gallant, have tended to use a thematic approach: the themes of exile, fractured human relationships, and the importance of memory in recreating the past have all been described as unifying features of her work.* The critics' reliance upon this particular approach has meant that the way in which Gallant uses language to construct her fiction has been relatively neglected. As Barbara Godard writes: "Obsessed with thematic analysis and the national scene, critics failed to evolve a vocabulary and concepts for discussing the construction of literary reality, for exploring the technical means of achieving what Barthes calls the 'reality effect'" (76). Godard's study, which develops a semiotics of irony through an analysis of Gallant's irony, takes the first step in addressing this critical deficiency. In this thesis, I would like to continue along the path Godard has illuminated. Through an exploration of the r structure of two of Gallant's texts, this thesis wil examine the way in which Gallant uses language itself to undercut the 'reality effect' created by language

Implementing a step down intermediate care service

Purpose: The purpose of this paper is to explore implementation and development of step-down intermediate care (IC) in Glasgow City from the perspective of staff. Design/methodology/approach: The study used qualitative methods. Nine key members of staff were interviewed and three focus groups were run for social work, rehabilitation and care home staff. Framework analysis was used to identify common themes. Findings: The proposed benefits of IC were supported anecdotally by staff. Perceived enablers included: having a range of engaged stakeholders, strong leadership and a risk management system in place, good relationships, trust and communication between agencies, a discharge target, training of staff, changing perception of risk and risk aversion, the right infrastructure and staffing, an accommodation-based strategy for patients discharged from IC, the right context of political priorities, funding and ongoing adaptation of the model in discussion with frontline staff. Potential improvements included a common recording system shared across all agencies, improving transition of patients from hospital to IC, development of a tool for identifying suitable candidates for IC, overcoming placement issues on discharge from IC, ensuring appropriate rehabilitation facilities within IC units, attachment of social work staff to IC units and finding solutions to issues related to variation in health and social care systems between sectors and hospitals. Originality/value: The findings of this study help the ongoing refinement of the IC service. Some of the recommendations have already been implemented and will be of value to similar services being developed elsewhere

Zika virus preferentially replicates in the female reproductive tract after vaginal inoculation of rhesus macaques.

Zika virus (ZIKV) is a mosquito-transmitted virus that can cause severe defects in an infected fetus. ZIKV is also transmitted by sexual contact, although the relative importance of sexual transmission is unclear. To better understand the role of sexual transmission in ZIKV pathogenesis, a nonhuman primate (NHP) model of vaginal transmission was developed. ZIKV was readily transmitted to mature cycling female rhesus macaque (RM) by vaginal inoculation with 104-106 plaque-forming units (PFU). However, there was variability in susceptibility between the individual RM with 1->8 vaginal inoculations required to establish infection. After treatment with Depoprovera, a widely used contraceptive progestin, two RM that initially resisted 8 vaginal ZIKV inoculations became infected after one ZIKV inoculation. Thus, Depoprovera seemed to enhance susceptibility to vaginal ZIKV transmission. Unexpectedly, the kinetics of virus replication and dissemination after intravaginal ZIKV inoculation were markedly different from RM infected with ZIKV by subcutaneous (SQ) virus inoculation. Several groups have reported that after SQ ZIKV inoculation vRNA is rapidly detected in blood plasma with vRNA less common in urine and saliva and only rarely detected in female reproductive tract (FRT) secretions. In contrast, in vaginally inoculated RM, plasma vRNA is delayed for several days and ZIKV replication in, and vRNA shedding from, the FRT was found in all 6 animals. Further, after intravaginal transmission ZIKV RNA shedding from FRT secretions was detected before or simultaneously with plasma vRNA, and persisted for at least as long. Thus, ZIKV replication in the FRT was independent of, and often preceded virus replication in the tissues contributing to plasma vRNA. These results support the conclusion that ZIKV preferentially replicates in the FRT after vaginal transmission, but not after SQ transmission, and raise the possibility that there is enhanced fetal infection and pathology after vaginal ZIKV transmission compared to a mosquito transmitted ZIKV

The combinatorics of Borel covers

In this paper we extend previous studies of selection principles for families of open covers of sets of real numbers to also include families of countable Borel covers. The main results of the paper could be summarized as follows: 1. Some of the classes which were different for open covers are equal for Borel covers -- Section 1; 2. Some Borel classes coincide with classes that have been studied under a different guise by other authors -- Section 4.Comment: Regular updat

Impacts of Drying and Rewetting on the Radiocarbon Signature of Respired CO2 and Implications for Incubating Archived Soils

The radiocarbon signature of respired CO2 (∆14C-CO2) measured in laboratory soil incubations integrates contributions from soil carbon pools with a wide range of ages, making it a powerful model constraint. Incubating archived soils enriched by “bomb-C” from mid-20th century nuclear weapons testing would be even more powerful as it would enable us to trace this pulse over time. However, air-drying and subsequent rewetting of archived soils, as well as storage duration, may alter the relative contribution to respiration from soil carbon pools with different cycling rates. We designed three experiments to assess air-drying and rewetting effects on ∆14C-CO2 with constant storage duration (Experiment 1), without storage (Experiment 2), and with variable storage duration (Experiment 3). We found that air-drying and rewetting led to small but significant (α < 0.05) shifts in ∆14C-CO2 relative to undried controls in all experiments, with grassland soils responding more strongly than forest soils. Storage duration (4–14 y) did not have a substantial effect. Mean differences (95% CIs) for experiments 1, 2, and 3 were: 23.3‰ (±6.6), 19.6‰ (±10.3), and 29.3‰ (±29.1) for grassland soils, versus −11.6‰ (±4.1), 12.7‰ (±8.5), and −24.2‰ (±13.2) for forest soils. Our results indicate that air-drying and rewetting soils mobilizes a slightly older pool of carbon that would otherwise be inaccessible to microbes, an effect that persists throughout the incubation. However, as the bias in ∆14C-CO2 from air-drying and rewetting is small, measuring ∆14C-CO2 in incubations of archived soils appears to be a promising technique for constraining soil carbon models

The Ursinus Weekly, October 6, 1941

Coulter launches sales campaign for 1942 annual • Enrollment here drops fifty below last year\u27s peak • Adams speaks at first Y vespers; Kooker sings solo • President McClure depicts the role Ursinus can play in defense • Dr. J. L. Barnard passes away after sudden illness • Booster comm. plans Pete Stevens\u27 day and a pep rally Friday • Ursinus offers varied courses in night school for workers in defense • Four attend debate conclave to formulate questions for debate • Terrorized freshman redcaps survive rigors of initial week • Grizzly Gridder due Friday; features Pete Stevens\u27 Day • Ursinus committee wins national prize for essay on The next decade of American foreign policy • Over 750 delegates attend seven summer conferences • Frosh find handbook a directory to campus • Twelve from Ursinus attend June conference at Eagles Mere • Faculty changes made; new prof in physics • Mertz represents Ursinus • Red Devils conquer Stevens\u27 bears in opener by 20-7: Rookie Rehor\u27s passing downs bears Saturday • Forecaster sees good percentage of bear victories • Owls drub bear soccermen 12-0 in game Saturday • Miss Snell drills veteran squad for full schedule • New football coach more than mere grid mentor • Steinmetz to coach Jr. varsity football squad • Ex-Ursinus \u2742, Dick Dennis, lets bride marry best manhttps://digitalcommons.ursinus.edu/weekly/1764/thumbnail.jp