Functional significance of human female orgasm still hypothetical

The official published version can be accessed from the link below - Copyright © Cambridge University Press 2000Human males are more polygamously inclined than females. However, there is substantial within-sex variation in polygamous inclinations and practices. This is acknowledged by Gangestad & Simpson but we pose the question: Is the target article's “strategic pluralism” pluralistic enough? In addition, we argue that the hypothesis that the female orgasm is an adaptation for post-copulatory female choice between rival ejaculates demands more research

Spatially and Temporally Explicit Energy System Modelling to Support the Transition to a Low Carbon Energy Infrastructure – Case Study for Wind Energy in the UK

Renewable energy sources and electricity demand vary with time and space and the energy system is constrained by the location of the current infrastructure in place. The transitioning to a low carbon energy society can be facilitated by combining long term planning of infrastructure with taking spatial and temporal characteristics of the energy system into account. There is a lack of studies addressing this systemic view. We soft-link two models in order to analyse long term investment decisions in generation, transmission and storage capacities and the effects of short-term fluctuation of renewable supply: The national energy system model UKTM (UK TIMES model) and a dispatch model. The modelling approach combines the benefits of two models: an energy system model to analyse decarbonisation pathways and a power dispatch model that can evaluate the technical feasibility of those pathways and the impact of intermittent renewable energy sources on the power market. Results give us the technical feasibility of the UKTM solution from 2010 until 2050. This allows us to determine lower bounds of flexible elements and feeding them back in an iterative process (e.g. storage, demand side control, balancing). We apply the methodology to study the long-term investments of wind infrastructure in the United Kingdom

Mobile integrated conditional access system

This paper presents design of a novel security architecture integrating mobile and broadcasting technologies in the Pay-TV system. The security architecture proposed herein is a state-of-the-art solution to tackle well-known problems challenging current Pay-TV systems including but not limited to interoperability amongst service providers, relatively high cost of the service deployment, the security compromise, limited interactivity and bespoken services offered to subscribers. It also proposes the Follow-me service that enables subscribers to access their entitlements via an arbitrary set-top box

Security architectures in mobile integrated pay-TV

This paper presents the design and describes the advantage of the state-of-the-art Mobile Integrated Conditional Access System (MICAS) concerning interoperability, personalisation, security and operational costs in Pay-TV systems. The Message Handling Subsystem is proposed and outlined together with ‘Follow-Me’ service, which proposed herewith to extend mobility and personalisation concepts on Pay-TV service

Narrative and learning with Web 2.0 technologies: towards a research agenda

This paper investigates the impact of Web. 2.0 technologies on the ways learning can be conceived of as a narrative process within contemporary contexts, using blogs as an illustrative example. It is premised on the concept of narrative as a way in which individuals re-present and organize experience in order to learn from it and make it sharable with others within social contexts. The first part of the paper offers a theoretical analysis of the role of narrative in the social construction of knowledge by the ways it enables users of Web 2.0 technologies to participate meaningfully in the exchange of experiences and ideas. The second part of the paper offers a ‘situated’ analysis of the narrative practices engaged with by users of blogs. A ‘narrative trail’ is used to provide a contextualized instance of the narrative practices which are involved. The paper concludes by examining the research issues which are raised and suggests a research agenda which is needed to explore Web 2.0 technologies as social utilities affecting knowledge production, in which the adaptation of narrative theory is a central feature

Assessing the influence of the rhizosphere on soil hydraulic properties using X-ray Computed Tomography and numerical modelling

Understanding the dynamics of water distribution in soil is crucial for enhancing our knowledge of managing soil and water resources. The application of X-ray Computed Tomography (CT) to the plant and soil sciences is now well established. However, few studies have utilised the technique for visualising water in soil pore spaces. Here we utilise this method to visualise the water in soil in situ and in three-dimensions at successive reductive matric potentials in bulk and rhizosphere soil. The measurements are combined with numerical modelling to determine the unsaturated hydraulic conductivity, providing a complete picture of the hydraulic properties of the soil. The technique was performed on soil cores that were sampled adjacent to established roots (rhizosphere soil) and from soil that had not been influenced by roots (bulk soil). A water release curve was obtained for the different soil types using measurements of their pore geometries derived from CT imaging and verified using conventional methods e.g. pressure plates. The water, soil and air phases from the images were segmented and quantified using image analysis. The water release characteristics obtained for the contrasting soils showed clear differences in hydraulic properties between rhizosphere and bulk soil, especially in clay soil. The data suggests that soils influenced by roots (rhizosphere soil) are less porous due to increased aggregation when compared to bulk soil. The information and insights obtained on the hydraulic properties of rhizosphere and bulk soil will enhance our understanding of rhizosphere biophysics and improve current water uptake models

[Accepted Manuscript] Sexual rights but not the right to health? Lesbian and bisexual women in South Africa's National Strategic Plans on HIV and STIs

Synergies between securing sexual rights and the right to health have been pursued where there are clear public health gains to be made, such as lowering incidence of HIV and other sexually transmitted infections (STI). South Africa?s 1996 Constitution outlawed discrimination on the basis of sexual orientation and promoted the right to health. This qualitative health policy analysis sought to understand why and how interventions to improve sexual health of lesbian and bisexual women and address sexual violence were initially proposed in the HIV & AIDS and STI Strategic Plan for South Africa 2007?2011 and why and how these concerns were deprioritised in the National Strategic Plan (NSP) on HIV, STIs and TB 2012?2016. A conceptual framework considered several determinants of political priority for the inclusion in NSP development in 2007 and 2011 around sexual health concerns of women who have sex with women. This article presents findings from 25 in?depth key informant interviews and document review and highlights results of application of categories for a framework on determinants of political priority for lesbian and bisexual women?s issues to be included in South Africa?s NSP including: actor power, ideas, political context and issue characteristics. The article demonstrates how the epidemiological and structural drivers of lesbian and bisexual women?s vulnerability to HIV and STIs, including sexual violence and other violations of their sexual rights, have been expressed in policy forums and whether this has made an impact on lesbian and bisexual women?s ability to claim the right to health