Wireless Sensor Network (WSN) is leading towards a new and more advanced paradigm that is Internet of Everything (IoE). Ambient Assisted Living (AAL), which aims to support elderly and physically ...challenged persons, is based on sensor networks. WSNs are mostly installed for a particular single application. Though, future of WSNs hides in WSN virtualization, which supports multiple applications. The aggregation of the sensor network resources in the form of software or hardware are supported by WSN virtualization. In Virtualizing WSN, the role of middleware layer is of supreme importance. However, a middleware layer faces overhead challenges of high processing time, delay, and the power consumption. The major challenge faced by AAL application in the paradigm of WSN virtualization is the delay caused by the aggregation of the sensed data. In this research paper efforts have been made to design a priority based multi-threading middleware design for sensor virtualization. The proposed middleware resides at the sensor node as well as the gateway that reduces the delay caused by the sensor virtualization. The proposed middleware design has been implemented and tested on the AAL testbed.
To distinguish between three distinct groups of male and transgender sex workers in Pakistan and to demonstrate how members of these stigmatized groups need to be engaged in the research process to ...go beyond stated norms of behaviour.
A peer ethnography study was undertaken in a major city in Pakistan. 15 male and 15 transgender sex workers were trained as peer researchers to each interview three peers in their network. Analysis was based on interviews with peer researchers as well as observation of dynamics during training and analysis workshops.
The research process revealed that, within the epidemiological category of biological males who sell sex, there are three sociologically different sexual identities: khusras (transgender), khotkis (feminized males) and banthas (mainstream male identity). Both khusras and khotkis are organised in strong social structures based on a shared identity. While these networks provide emotional and material support, they also come with rigid group norms based on expected "feminine" behaviours. In everyday reality, sex workers showed fluidity in both behaviour and identity according to the situational context, transgressing both wider societal and group norms. The informal observational component in peer ethnography was crucial for the accurate interpretation of interview data. Participant accounts of behaviour and relationships are shaped by the research contexts including who interviews them, at what stage of familiarity and who may overhear the conversation.
To avoid imposing a "false clarity" on categorisation of identity and assumed behaviour, it is necessary to go beyond verbal accounts to document the fluidity of everyday reality.
Pitfalls in F-18 FDG-PET CT: An Imaging Spectrum Khan, Jehanzeb; Qureshi, Saadia; Hickeson, Mark ...
Contemporary diagnostic radiology,
2007-February-28, Letnik:
30, Številka:
5
Journal Article
F-18 FDG-PET CT imaging is being used more and more often, leading to a developing and clearer understanding of the significant findings and artifacts on these studies. Many of the pitfalls related ...to F-18 FDG-PET CT studies are easy to recognize. This article illustrates some common pitfalls.
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