Quasiconvex Subgroups and Nets in Hyperbolic Groups

Consider a hyperbolic group G and a quasiconvex subgroup H of infinite index. We construct a set-theoretic section s of the quotient map (of sets) from G to G/H such that s(G/H) is a net in G; that is, any element of G is a bounded distance from s(G/H). This section arises naturally as a set of points minimizing word-length in each fixed coset gH. The left action of G on G/H induces an action on s(G/H), which we use to prove that H contains no infinite subgroups normal in G.Comment: 15 pages, 1 figure; v3: Replaced another typo; v2: Replaced minor typo in abstrac

Family variables which are associated with achievement of community tenure by persons released from psychiatric hospitalization

The pattern of frequent discharges and readmissions which characterizes most psychiatric hospitalization in this country today was described, and it was argued that the costs of this “revolving door” outweigh such benefits as might be derived from it. An alternative stepwise progression model of aftercare was proposed. This model identified community tenure as the most appropriate goal for initial aftercare efforts. Attempts to identify correlates of the establishment of community tenure by mental hospital releasees were reviewed. It was found that the ex-patient\u27s ability to remain in the community is not highly correlated with the extent to which he manifests deviant behavior. This finding was interpreted as an indication that environmental factors may play significant part in ex-patients’ avoidance of rehospitalization. Data were presented which indicated that a clear majority of mental hospital releasees take up residency immediately with family members. It was hypothesized, then, that measurable family variables are correlated with the ability of the ex-patient to achieve community tenure. An attempt was made to examine this hypothesis in the light of relevant research. Studies of the issue which contained substantive empirical support were categorized into four topic areas: family tolerance of the ex-patient\u27s symptomatic behavior, kin role which the family affords to the ex-patient, familial expectations of the ex-patient\u27s performance, and family attitudes and personality characteristics. After reviewing the studies of authors who attempted to assess the degree of correlation between the capacity of the ex-patient’s family to tolerate symptomatic behavior on the part of the ex-patient and the ex-patient’s ability to avoid rehospitalization, it was concluded that the linear correlation between the two variables which would be predicted logically may not exist. A review of studies of the relationship between the kin role which the ex-patient\u27s family affords to him and the ex-patient\u27s ability to achieve community tenure yielded a tentative conclusion that returning to the social biological role of “child” (son or daughter) as opposed to the kin role of spouse was positively correlated with remaining in the community. After examining studies which attempted to explore the relationship between familial expectations of instrumental performance on the part of the ex-patient and the ability of the ex-patient to avoid rehospitalization, it was concluded that little support was provided for the hypothesis that the two variables are related. A survey of attempts to identify family attitude and personality characteristic correlates of ex-patient achievement of community tenure resulted in arrival at the conclusion that such efforts, as a whole, have met with little success, although significant correlations between two general family attitudes toward mental illness and ex-patient avoidance of rehospitalization were found. Considering the findings which were reviewed as a whole, it was concluded that little support was provided for the hypothesis that measurable family variables are correlated with the ability of the ex-patient to achieve community tenure. The rather limited aftercare practice applications which could be drawn from the few correlations that have been discovered were described, and implications of the over-all finding for future research were discussed

Torts—Products Liability Cases—Privity No Longer Required

Goldberg v. Kollsman Instrument Corp., 12 N.Y.2d 432, 240 N.Y.S.2d 592, 191 N.E.2d 81 (1963)

Torts—Maintenance Of Abandoned House In State Of Disrepair Not Basis For Absolute Liability

Beauckamp v. New York City Housing Authority, 12 N.Y.2d 400, 240 N.Y.S.2d 15, 190 N.E.2d 412 (1963)

The Timing of Visual Object Categorization

An object can be categorized at different levels of abstraction: as natural or man-made, animal or plant, bird or dog, or as a Northern Cardinal or Pyrrhuloxia. There has been growing interest in understanding how quickly categorizations at different levels are made and how the timing of those perceptual decisions changes with experience. We specifically contrast two perspectives on the timing of object categorization at different levels of abstraction. By one account, the relative timing implies a relative timing of stages of visual processing that are tied to particular levels of object categorization: Fast categorizations are fast because they precede other categorizations within the visual processing hierarchy. By another account, the relative timing reflects when perceptual features are available over time and the quality of perceptual evidence used to drive a perceptual decision process: Fast simply means fast, it does not mean first. Understanding the short-term and long-term temporal dynamics of object categorizations is key to developing computational models of visual object recognition. We briefly review a number of models of object categorization and outline how they explain the timing of visual object categorization at different levels of abstraction

SEGMENTING NICHE GOAT-MEAT MARKETS

This research report provides an examination of the ratings of an important sensory attribute of chevon (goat meat) with that of beef and pork. Results from an analysis of variance of comparative ratings of the flavor of chevon and that of beef and pork suggest that selected demographic characteristics of U.S. consumers influenced the ratings of chevon'Â’s flavor with that of beef and pork. The findings indicate that Hispanics, blacks, and females should not be treated as homogenous niche markets. The results suggest that there are distinct subdivision preferences within and between these consumer partitions.Agribusiness,

First human study in treatment of unresectable liver metastases from colorectal cancer with irinotecan-loaded beads (DEBIRI)

The objective of this pilot clinical study was to assess the safety, technical feasibility, pharmacokinetic (PK) profile and tumour response of DC Bead™ with irinotecan (DEBIRI™) delivered by intra-arterial embolisation for the treatment of metastatic colorectal cancer. Eleven patients with unresectable liver metastases from CRC, tumour burden <30% of liver volume, adequate haematological, liver and renal function, performance status of <2 were included in this study. Patients received up to 4 sessions of TACE with DEBIRI at 3-week intervals. Feasibility of the procedure, safety and tumour response were assessed after each cycle. PK was measured after the first cycle. Patients were followed up to 24 weeks. Only mild to moderate adverse events were observed. DEBIRI is a technically feasibile procedure; no technical complications were observed. Average Cmax for irinotecan and SN-38 was 194 ng/ml and 16.7 ng/ml, respectively, with average t½ of 4.6 h and 12.4 h following administration of DEBIRI. Best overall response during the study showed disease control in 9 patients (2 patients with partial response and 7 with stable disease, overall response rate of 18%). Our study shows that transarterial chemoembolisation with irinotecan-loaded DC beads (DEBIRI) is safe, technically feasible and effective with a good PK profile

Continued investigation of LDEF's structural frame and thermal blankets by the Meteoroid and Debris Special Investigation Group

This report focuses on the data acquired by detailed examination of LDEF intercostals, 68 of which are now in possession of the Meteoroid and Debris Special Investigation Group (M&D SIG) at JSC. In addition, limited data will be presented for several small sections from the A0178 thermal control blankets that were examined/counted prior to being shipped to Principal Investigators (PI's) for scientific study. The data presented here are limited to measurements of crater and penetration-hole diameters and their frequency of occurrence which permits, yet also constrains, more model-dependent, interpretative efforts. Such efforts will focus on the conversion of crater and penetration-hole sizes to projectile diameters (and masses), on absolute particle fluxes, and on the distribution of particle-encounter velocities. These are all complex issues that presently cannot be pursued without making various assumptions which relate, in part, to crater-scaling relationships, and to assumed trajectories of natural and man-made particle populations in LEO that control the initial impact conditions