New constraints on the tau neutrino mass and fourth generation mixing

We present new constraints on the mass $m_{\nu_\tau}$ of the tau neutrino and its mixing with a fourth generation neutrino. From an analysis of the partial widths of tau lepton decays we obtain the following bounds at the 90% confidence level: $m_{\nu_\tau} < 32$ MeV and $\sin^2\theta < 0.007$, where $\theta$ describes the Cabibbo-like mixing of the third and fourth generation neutrinos.Comment: 2 pages, no figures. Submitted to Phys. Rev.

Faulty Metrics and the Future of Digital Journalism

This report explores the industry of Internet measurement and its impact on news organizations working online. It investigates this landscape through a combination of documentary research and interviews with measurement companies, trade groups, advertising agencies, media scholars, and journalists from national newspapers, regional papers, and online-only news ventures

Ethical Issues in Teaching About Research Ethics

Ethical issues in the conduct of research is an important topic in research methods courses for graduate students inmany Faculties of Education. The authors relate their experiences in teaching this topic over several semesters using a simulation of the well-known research into obedience by Stanley Milgram in the early 1960s. Students' reactions to the use of the simulation at both emotional and intellectual levels are describedand discussed, as is the ethical dilemmathose reactionshave createdfor their teachers in contemplating future use of such emotion-charged teaching approaches

What Happens if Pensions Disappear? A Case Analysis

Long before General Motors filed for bankruptcy protection, it closed all 10 of its facilities in Anderson, Indiana, which was devastating to the greater Anderson Community, yet today, more than ten thousand General Motors retirees reside around Anderson and the pension benefits continue to buffer the economic impact on the community. There are viable threats in the current economic climate to this stream of pension income, however. This study is an attempt to assess the long-term economic impact that a loss or significant reduction of future pensions could potentially have on the Anderson, Indiana, area

Children’s Perceptions of Intimate Partner Violence: Causes, Consequences, and Coping

Children’s appraisals of conflictual and aggressive parental interactions mediate their effect on children’s adjustment. Previous studies have relied almost exclusively on selfreport questionnaires to assess appraisals; consequently we know little about perceptions that occur naturallywhen children witness interparental aggression. This study employed a semistructured interview to assess the thoughts and feelings of 34 children (ages 7–12) whose mothers were receiving services at domestic violence agencies, and mothers reported on interparental aggression that took place in the home. Children’s thoughts centered on consequences and efforts to understand why fights occurred. They generally viewed their mother’s partner as responsible for violence, though a significant number viewed both parents as playing a role. Sadness and anger were more common than anxiety, and children often attempted to stop or withdraw from fights or both. When asked why family violence occurs, most focused on perpetrators’ lack of control of anger or personal characteristics, but approximately onethird viewed victims as provoking aggression. These findings support the idea that children actively attempt to understand the causes and consequences of interparental violence and suggest that their perceptions and interpretations are important for understanding the development of beliefs regarding the use of violence in close relationships

Sensitivities of one-prong tau branching fractions to tau neutrino mass, mixing, and anomalous charged current couplings

We analyse the sensitivities of exclusive one-prong tau branching fractions to: the tau neutrino mass; its mixing with a fourth generation neutrino; the weak charged current magnetic and electric dipole moments of the tau; and the Michel parameter $\eta$. Quantitative constraints are derived from current experimental data and the future constraints derivable from tau-charm factory measurements are estimated. The anomalous coupling constraints are used to constrain the tau compositeness scale and the allowed parameter space for Higgs doublet models.Comment: Invited talk at the Tau-Charm Workshop, 6-9 March 1999, SLAC, US