Women?s health in mid-life: life course social roles and agencyas quality

Data from a prospective British birth cohort study showed that women who were childless, lone mothers or full-timehomemakers between the ages of 26 and 54 were more likely to report poor health at age 54 than women who occupiedmultiple roles between these ages. To explain this finding we developed and tested a theory of role quality based on theconcept of agency by drawing on Giddens? theory of structuration and Doyal and Gough?s theory of human needs.According to our theory, the patriarchal structuration (drawing on Giddens? term) of work and family roles provides bothlimitation and opportunity for the expression of agency. Doyal and Gough?s theory of human needs was then used toidentify the restriction of agency as a possible influence on health. This theory of role quality was operationalised using ameasure of work (paid and unpaid) quality at age 36 and a measure of work and family stress between ages 48 and 54. Therelatively poor subjective health in mid-life of lone mothers was explained by work and family stress and adult social class.In contrast, the poor health in mid-life of long-term homemakers and childless women was less easily explained.Homemaker?s excess risk of reporting poor health at age 54 remained strong and significant even after adjusting for rolequality and socioeconomic indicators, and childless women were at an increased risk of reporting poor health despite thesocial advantage inherent in attaining educational qualifications and occupying professional or managerial occupations.This study highlights the need to develop measures of role quality specifically designed to capture agency aspects of socialroles

Evaluation of the Environmental Impact of Milk Quotas

The aim of this study is to examine the environmental impacts of the different systems for allocation and transfer of milk quota under the Common Agricultural Policy (CAP) in individual Member States of the European Union (EU). In particular, it seeks to identify the ways in which differences in the implementation of milk quota regimes can impact on various sectoral and farm management trends and the environmental implications of these

Radioactive-type dual ablation measuring system, volume 1 Final report

Nucleonic measurement of ablative heat shield material recessio

Strategies for enhancing quantum entanglement by local photon subtraction

Subtracting photons from a two-mode squeezed state is a well-known method to increase entanglement. We analyse different strategies of local photon subtraction from a two-mode squeezed state in terms of entanglement gain and success probability. We develop a general framework that incorporates imperfections and losses in all stages of the process: before, during, and after subtraction. By combining all three effects into a single efficiency parameter, we provide analytical and numerical results for subtraction strategies using photon-number-resolving and threshold detectors. We compare the entanglement gain afforded by symmetric and asymmetric subtraction scenarios across the two modes. For a given amount of loss, we identify an optimised set of parameters, such as initial squeezing and subtraction beam splitter transmissivity, that maximise the entanglement gain rate. We identify regimes for which asymmetric subtraction of different Fock states on the two modes outperforms symmetric strategies. In the lossless limit, subtracting a single photon from one mode always produces the highest entanglement gain rate. In the lossy case, the optimal strategy depends strongly on the losses on each mode individually, such that there is no general optimal strategy. Rather, taking losses on each mode as the only input parameters, we can identify the optimal subtraction strategy and required beam splitter transmissivities and initial squeezing parameter. Finally, we discuss the implications of our results for the distillation of continuous-variable quantum entanglement.Comment: 13 pages, 11 figures. Updated version for publicatio