Disposable clean delivery kits and prevention of neonatal tetanus in the presence of skilled birth attendants.

OBJECTIVE: To determine whether the use of disposable clean delivery kits (CDKs) is effective in reducing neonatal tetanus (NNT) infection, regardless of the skills of birth attendants in resource-poor settings. METHODS: A secondary analysis was conducted on data from a matched case-control study in Karachi, Pakistan, involving 140 NNT cases and 280 controls between 1998 and 2001. Conditional logistic regression was performed to assess the independent effect on NNT of CDKs and skilled birth attendants (SBAs). RESULTS: After adjustment for socioeconomic factors, both CDKs (adjusted matched odds ratio [mOR] 2.0; 95% confidence interval [CI], 1.3-3.1) and SBAs (adjusted mOR 1.7; 95% CI, 1.1-2.7) were independently associated with NNT. The association with CDKs remained significant when additionally adjusted for SBAs (mOR 2.0; 95% CI, 1.0-3.9; P=0.05). The population attributable risk for lack of CDK use was 24% in the study setting. CONCLUSION: In the context of resource-poor settings in low-income countries with poor coverage of tetanus toxoid immunization, the use of CDKs seems to be an effective strategy for reducing NNT infection, irrespective of the skill levels of birth attendants. Approximately one-quarter of NNT cases could be prevented in low-income populations with the use of CDKs

Bandwidth Efficient Root Nyquist Pulses for Optical Intensity Channels

Indoor diffuse optical intensity channels are bandwidth constrained due to the multiple reflected paths between the transmitter and the receiver which cause considerable inter-symbol interference (ISI). The transmitted signal amplitude is inherently non-negative, being a light intensity signal. All optical intensity root Nyquist pulses are time-limited to a single symbol interval which eliminates the possibility of finding bandlimited root Nyquist pulses. However, potential exists to design bandwidth efficient pulses. This paper investigates the modified hermite polynomial functions and prolate spheroidal wave functions as candidate waveforms for designing spectrally efficient optical pulses. These functions yield orthogonal pulses which have constant pulse duration irrespective of the order of the function, making them ideal for designing an ISI free pulse. Simulation results comparing the two pulses and challenges pertaining to their design and implementation are discussed

Effects of Neutrino Inverse Seesaw Mechanism on the Sparticle Spectrum in CMSSM and NUHM2

We study the implications of the inverse seesaw mechanism (ISS) on the sparticle spectrum in the Constrained Minimal Supersymmetric Standard Model (CMSSM) and Non-Universal Higgs Model (NUHM2). Employing the maximal value of the Dirac Yukawa coupling involving the up type Higgs doublet provides a 2-3 GeV enhancement of the lightest CP-even Higgs boson mass. This effect permits one to have lighter colored sparticles in the CMSSM and NUHM2 scenarios with LSP neutralino, which can be tested at LHC14. We present a variety of LHC testable benchmark points with the desired LSP neutralino dark matter relic abundance.Comment: 18 pages, 10 figures and 2 table

Accelerated modernity

This paper aims to show how current undergraduate students use social media in their daily lives, taking the first ten minutes of the day as a concentrated insight into their priorities of practice. The work draws on primary data from four focus groups of UK business students in higher education. Through the application of Rosa’s construct of social acceleration, initial findings indicate a hierarchy of priorities, shaped by economic, cultural and structural drivers in what social media is engaged with, in what sequence, and for what purpose. These choices reflect acceleration in the changes to the technology, the pace of social changes and the accelerated expectations of the pace of life. This article seeks to reimagine transmedia in the context of social media identity in an accelerated modernity. Here we have the intersection of three important rapidly changing constructs for the analysis of the use of media. These are the widespread, ubiquitous use of social media, the acceleration of late modernity and the impact of transmedia practice on how users engage with media

Systemic problems related to multiple stakeholders in technology adoption and use in organizations : a systems thinking perspective

Understanding and creating the conditions under which information systems will be embraced by human organizations (thinking systems) remain high-priority research issues. Despite numerous benefits associated with information technology (IT), implementing an information system (IS) in organizational environment is challenging. The literature reports numerous IS project failures. During IS implementation, several factors impede technology’s widespread adoption and use in organizations. These organizational problems often result from such barriers or ‘systemic problems’. The proposed work is based on the argument that addressing ‘systemic problems’ can reduce barriers to organizational progress. Most of the IS/IT adoption theories (e.g. TAM, UTAUT, TAM2 and TAM3) highlight factors related to system users, completely ignoring the other stakeholders who are affected by the adoption process. The purpose of this study is to apply an holistic or systems thinking approach to identify systemic problems in information technology adoption and use within an organizational context by considering the complete stakeholder set as a ‘system of stakeholders’. It involves the study of a web portal implementation project in an Australian university referred to as Aus-Uni. Data was collected through face-to-face interviews of different stakeholders across Aus-Uni and were fundamentally classified into the two categories of ‘involved’ and ‘affected’. Their relevant comments and experiences have been analysed using the lens of a systems thinking-based framework of Critical Systems Heuristics (CSH). The interpretive approach, based on structured-case study method, and the technique of practising CSH have been used as a data gathering framework for this case study. The study’s findings contribute towards identifying information needs and systemic problem scenarios, related to multiple stakeholders in the context of the web portal project. However, its insights may allow broader applications. The roles which these stakeholders play have been classified under the categories prescribed by the CSH methodology of boundary critique. This generated ‘system of stakeholders’ was further analysed to explore problem scenarios as subsystems to this ‘system of stakeholders’. Each problem scenario identifies who was involved and affected by it. It is believed that identifying problems holistically will lead to smoother IS adoption, and reduce IS project failures. This research also proposes two theoretical models based on Critical Systems Heuristics (CSH); one for IS adoption, which demonstrates how CSH can be coupled with the existing IS implementation methodologies to create a holistic perspective of IS implementation issues. This model uses Systems Development Life Cycle (SDLC) as an example, and proposes that the stakeholder roles need to be identified using boundary critique throughout the project life cycle. The second model is for managing conflicts in the context of organizational change, and is applicable for implementing innovative practices inside organizations, and identifying conflicting scenarios which surface during that process

A high-performance communication topology for decentralized protocols

Preserving transaction atomicity and ensuring its commitment is key to the maintenance of data integrity in a distributed database. The distributed consensus protocol is a prominent example of a mechanism used to accomplish safe commitment of a distributed transaction. These protocols are based primarily on repeated message exchange among all sites/nodes and their performance is characterized not only by the number of these messages but also by the underlying communication topology. This thesis proposes a measure of performance known as average message complexity and proposes a communication structure based on folded even graphs called the Folded Even Network (FEN). Performance of FEN is compared to other known structures and is shown to outperform them for various values of the number of nodes in the network. It is also shown that large topologies can be generated by connecting multiple FENs together. The expanded structure is also shown to have the same complexity as a single FEN