Volume and homology of one-cusped hyperbolic 3-manifolds

Let M be a complete, finite-volume, orientable hyperbolic manifold having exactly one cusp. If we assume that pi_1(M) has no subgroup isomorphic to a genus-2 surface group, and that either (a) H_1(M;Z_p) has dimension at least 5 for some prime p, or (b) H_1(M;Z_2) has dimension at least 4, and the subspace of H^2(M;Z_2) spanned by the image of the cup product has dimension at most 1, then vol M > 5.06 If we assume that H_1(M;Z_2) has dimension at least 7, and that the compact core of M does not contain a genus-2 closed incompressible surface, then vol M > 5.06.Comment: 31 pages. This version agrees with the published version of the paper, except that an error in the published abstract has been corrected. In particular, the result which applies to manifolds with mod 2 homology of dimension at least 7 is stronger and has a shorter proof than the corresponding result in version

Predicting the use of sexual initiation tactics in a sample of college women

Journal ArticleSignificant attention has been focused on women's initiation of sexual contact with men and the point at which this initiation becomes sexual aggression. The purpose of this study was to examine possible predictors of the use of three conceptually distinct sets of sexual initiation tactics: seduction, coercion, and force. Relationships between women's personal characteristics, future expectancies about sex and relationships, the ‘rehearsal behavior' of telephone calling patterns in adolescence, sexual self-esteem, past abuse, and past sexual abuse were related to measures of women's sexual initiation and aggression. Survey respondents were 272, mostly white women students with a mean age of 26 years. A complex relationship emerged between predictor and outcome variables. Social learning theory is utilized to interpret the findings and recommend future research directions

Superfluid transitions in bosonic atom-molecule mixtures near Feshbach resonance

We study bosonic atoms near a Feshbach resonance, and predict that in addition to a standard normal and atomic superfluid phases, this system generically exhibits a distinct phase of matter: a molecular superfluid, where molecules are superfluid while atoms are not. We explore zero- and finite-temperature properties of the molecular superfluid (a bosonic, strong-coupling analog of a BCS superconductor), and study quantum and classical phase transitions between the normal, molecular superfluid and atomic superfluid states.Comment: 4 revtex pages, 3 eps figures; submitted to PR

Dehn surgery, homology and hyperbolic volume

If a closed, orientable hyperbolic 3--manifold M has volume at most 1.22 then H_1(M;Z_p) has dimension at most 2 for every prime p not 2 or 7, and H_1(M;Z_2) and H_1(M;Z_7) have dimension at most 3. The proof combines several deep results about hyperbolic 3--manifolds. The strategy is to compare the volume of a tube about a shortest closed geodesic C in M with the volumes of tubes about short closed geodesics in a sequence of hyperbolic manifolds obtained from M by Dehn surgeries on C.Comment: This is the version published by Algebraic & Geometric Topology on 8 December 200

Homeless Canadians’ Perspectives on Homelessness in Calgary

Since the 1990s, homelessness has increased in Canada, but the strategies of the government and public health service providers to manage the situation have had limited success. Researchers have also noted the lack of inclusion of those experiencing homelessness in homelessness research to better understand and develop a solution to the issue. In the present study, this is addressed through inclusion of homeless participants from diverse backgrounds. The purpose of this phenomenological study, framed by social cognitive theory, reciprocal determinism, and symbolic interaction, was to understand homelessness from the perspectives of people who do not have homes. Data were collected from open-ended interviews with a purposeful sample of 15 individuals who were homeless. Several themes emerged after interview data were transcribed via hand coding and analyzed using cognitive data analysis. The prominent themes were lack of money, home, privacy, and support; discrimination directed primarily toward First Nations people and those of African descent; mental illness and addiction; the need for a review of housing policy that addresses rent, mortgage qualification criteria, and house tax; and the creation of awareness of government support systems and the services that they provide. Public health service providers and designated authorities can use the findings of this study to understand the phenomenon from the perspective of people who are experiencing homelessness, which can influence the development of better homelessness reduction strategies that could improve the lives of those experiencing homelessness and their communities. Because homelessness is a public health issue, bringing it under control could positively impact the health and safety of the public

Report on a formative evaluation conducted for the Youth Against Tobacco counter marketing campaign

This paper reports the formative evaluation findings of a tobacco counter-marketing campaign and recommendations based on those findings. Focus groups were used w determine reactions to four messages for the Youth Against Tobacco (YAT) campaign. Participants aged eleven to eighteen years old, who resided in the metropolitan New Orleans area. were selected from area schools usiNg convenience sampling. Results indicated that while reactions w the messages were positive overall, some aspects of the messages seemed too complex to be used effectively in the campaign. These results helped to guide modification and selection of messages prior to use in the campaign

The Sexual History Polygraph Examination and Its Influences on Recidivism

The polygraph in postconviction sex offender testing is used to assist in the treatment and supervision of convicted sex offenders by more than 70% of the jurisdictions that supervise these offenders in the United States. Prior researchers have failed to convincingly demonstrate how the polygraph can be used to target risk behaviors and reduce recidivism. Consequently, the use of the sexual history polygraph examination (SHPE) has not been demonstrated to reduce recidivism. We sought answers as to how the SHPE influences the behaviors of sexual offenders required to undergo a SHPE, and whether or not there is a difference in recidivism between those offenders who undergo a SHPE as compared to those who do not. Within the group that took a polygraph, recidivists went longer before taking a SHPE, and there was a significant difference in recidivism between those who took a polygraph and those who did not. This information may be useful in assisting other jurisdictions both in the United States and internationally in making better choices in the implementation of supervision and getting the maximum return in the use of the polygraph. It is hoped that ultimately this would lead to more knowledgeable decisions to promote positive social change for the sex offender, which would ultimately lead to positive social change in the community by reducing recidivism of childhood sexual abuse among convicted sex offenders