N-String Vertices in String Field Theory

We give the general form of the vertex corresponding to the interaction of an arbitrary number of strings. The technique employed relies on the ``comma" representation of String Field Theory where string fields and interactions are represented as matrices and operations between them such as multiplication and trace. The general formulation presented here shows that the interaction vertex of N strings, for any arbitrary N, is given as a function of particular combinations of matrices corresponding to the change of representation between the full string and the half string degrees of freedom.Comment: 22 pages, A4-Latex (latex twice), FTUV IFI

Pleasure, pressure and power: Some contradictions of gendered sexuality

The AIDS epidemic has encouraged public discussion of safer sex, but heterosexual young women have to negotiate sexual relationships with men in situations in which sex is defined largely in terms of men's needs and which lack notions of a positive female sexuality or female desires. Analysis of data from the Women, Risk and AIDS Project is interpreted to show both the range of pressures on young women to engage in sexual practices which are risky, violent or not pleasurable, but also the possibilities for young women to empower themselves in sexual relationships. Women's control over sexual safety is undermined by the dominance of male sexuality and women's compliance in satisfying men's desires. Empowerment is a contradictory and contested process requiring both critical reflection (intellectual empowerment) and the transforming of sexual experiences (experiential empowerment), but some young women are able to put into practice ways of negotiating safe and pleasurable sexual encounters with men

An evaluation of the childhood family structure measures from the sixth wave of the British Household Panel Survey

The paper performs an evaluation of the data that were collected in the sixth wave of the British Household Panel Survey (BHPS) on childhood family structure. After comparing such data with a large number of studies by using external sources, we find that the BHPS data "overestimate" the proportion of people who report an experience of life in a non-intact family during childhood by about 10%. Although an explanation based on recall error that deteriorates with the age of the BHPS respondents is possible, the overestimation is likely to be accounted for by non-ignorable attrition that may affect most of the comparison studies based on longitudinal data. Conversely, comparisons with other independent measurements from the BHPS itself reveal that the wave 6 data "underestimate" the proportion of young people who have lived at least part of their childhood in a non-intact family by about 8%. The probability of disagreement between these two sets of measures is strongly associated with poor interview characteristics, which may affect the comparison measure more than the wave 6 measure. Despite such differences, there is therefore a substantial degree of similarity between the family structure information that was collected in the sixth wave of the BHPS and the host of highly diverse records against which it has been compared. Copyright 2005 Royal Statistical Society.