Determinants of conventional health service utilization among pastoralists in northeast Ethiopia

Background: Health service utilization pattern among pastoralists in Ethiopia is not well documented. Available data are very few and mostly institution based. Objective: To assess the determinants of conventional health care utilization among pastoralist communities in northeast Ethiopia. Methods: The study employed a cross-sectional household survey conducted using structured questionnaires administered among 276 mobile and 262 settled subjects within the pastoral area. In addition, reviews of outpatient and inpatient records for the previous year at the local health facilities, as well as focus group discussions among the study communities were conducted to supplement the household survey data. Results: Analysis of the collected data revealed steep distance decay in level of health service utilization, in addition to statistically significant difference in the service utilization between the settled and the mobile pastoralist communities (the odd ratio and 95% CI for utilizing health services of settlers over mobile ones were 1.38 (1.138,1.667) with P valu

Extramarital sexual practices and perceived association with HIV infection among the Borana pastoral community

Background: Evidence has shown that in sub-Saharan Africa, HIV spreads mainly through heterosexual relationships. It is documented that, among others, the problem is more pronounced in connection to prevailing multiple sexual relations and marital infidelity. Despite evident association between such practice and spread in HIV infection, to date multiple sexual partnerships is a common practice. Among the Borana pastoral community, where awareness about HIV and AIDS is documented to be limited, engagement in extramarital sexual practice is believed to be the norm rather than exception. However, it remains unclear as to why the practice continues and if the community feels its consequences.Objectives: To explore if and why extramarital sexual practice is maintained and sustained and perceived vulnerability to HIV infection among the Borana pastoral community.Methods: An ethnographic study design was employed to responds to the objectives of this study. Such questions: whether extramarital sex is still practiced, if so why? Who practices it, whether the community is aware of the consequence of such practice vis-a-vis HIV infection, were set to be answered. A total of nine FGDs with sixty-eight participants and sixty in-depth interviews with men and women participated in the study. Information so generated was coded, categorized and summarized with an application of MAXQDA version 10 qualitative data analysis software, and interpretation of the results was carried out based on the objectives of the study.Results: Sex before marriage is considered as a taboo and those involved are out-casted (cabana) from the normal life processes of the community. While young men may engage in sexual activity with married women even before marriage and continues to maintain extramarital partner (jaalto) after marriage, women’s engagement in the practice follows marriage. Participants agreed that although local culture ‘disproves’ it and the community recognizes the fact that it would facilitate HIV infection, extramarital sexual practice remains common in the community. Its persistence is attributed to multiple factors including personal interest to prove that one is wanted by the opposite sex given fulfillment of socially prescribed gender roles, and economic transactions between families of those involved. Despite consistent denial of the cultural approval of such practice and the growing concern over its consequences to the spread of HIV infection, extramarital sexual activity remains to be valued and cherished in the community.Conclusion: Despite the widespread recognition of the consequences of extramarital sex on the spread of HIV infection, there is vested interest among the community numbers to maintain the practice. This calls for urgent action to launch culturally sound HIV interventions to mitigate further spread of HIV infection in Borana

Bibliography on HIV/AIDS in Ethiopia and Ethiopians in the Diaspora: The 2006 Update

No Abstract. The Ethiopian Journal of Health Development Vol. 21 (1) 2007: pp. 70-9

Bibliography on HIV/AIDS in Ethiopia and Ethiopians in the Diaspora: The 2011 Update

No abstract

Gravitational waves from brane-world inflation with induced gravity

We calculate the amplitude of gravitational waves produced by inflation on a de Sitter brane embedded in five-dimensional anti-de Sitter bulk spacetime, extending previous calculations in Randall-Sundrum type cosmology to include the effect of induced gravity corrections on the brane. These corrections arise via a term in the brane action that is proportional to the brane Ricci scalar. We find that, as in the Randall-Sundrum case, there is a mass gap between the discrete zero-mode and a continuum of massive bulk modes, which are too heavy to be excited during inflation. We give the normalization of the zero-mode as a function of the Hubble rate on the brane and are thus able to calculate the high energy correction to the spectrum of gravitational wave (tensor) modes excited on large scales during inflation from initial vacuum fluctuations on small scales. We also calculate the amplitude of density (scalar) perturbations expected due to inflaton fluctuations on the brane, and show that the usual four-dimensional consistency relation for the tensor/scalar ratio remains valid for brane inflation with induced gravity corrections.Comment: 8 pages, 2 figure

The linked survival prospects of siblings : evidence for the Indian states

This paper reports an analysis of micro-data for India that shows a high correlation in infant mortality among siblings. In 13 of 15 states, we identify a causal effect of infant death on the risk of infant death of the subsequent sibling (a scarring effect), after controlling for mother-level heterogeneity. The scarring effects are large, the only other covariate with a similarly large effect being mother’s (secondary or higher) education. The two states in which evidence of scarring is weak are Punjab, the richest, and Kerala, the socially most progressive. The size of the scarring effect depends upon the sex of the previous child in three states, in a direction consistent with son-preference. Evidence of scarring implies that policies targeted at reducing infant mortality will have social multiplier effects by helping avoid the death of subsequent siblings. Comparison of other covariate effects across the states offers some interesting new insights

The impact of image dynamic range on texture classification of brain white matter

<p>Abstract</p> <p>Background</p> <p>The Greylevel Cooccurrence Matrix method (COM) is one of the most promising methods used in Texture Analysis of Magnetic Resonance Images. This method provides statistical information about the spatial distribution of greylevels in the image which can be used for classification of different tissue regions. Optimizing the size and complexity of the COM has the potential to enhance the reliability of Texture Analysis results. In this paper we investigate the effect of matrix size and calculation approach on the ability of COM to discriminate between peritumoral white matter and other white matter regions.</p> <p>Method</p> <p>MR images were obtained from patients with histologically confirmed brain glioblastoma using MRI at 3-T giving isotropic resolution of 1 mm³. Three Regions of Interest (ROI) were outlined in visually normal white matter on three image slices based on relative distance from the tumor: one peritumoral white matter region and two distant white matter regions on both hemispheres. Volumes of Interest (VOI) were composed from the three slices. Two different calculation approaches for COM were used: i) Classical approach (CCOM) on each individual ROI, and ii) Three Dimensional approach (3DCOM) calculated on VOIs. For, each calculation approach five dynamic ranges (number of greylevels N) were investigated (N = 16, 32, 64, 128, and 256).</p> <p>Results</p> <p>Classification showed that peritumoral white matter always represents a homogenous class, separate from other white matter, regardless of the value of N or the calculation approach used. The best test measures (sensitivity and specificity) for average CCOM were obtained for N = 128. These measures were also optimal for 3DCOM with N = 128, which additionally showed a balanced tradeoff between the measures.</p> <p>Conclusion</p> <p>We conclude that the dynamic range used for COM calculation significantly influences the classification results for identical samples. In order to obtain more reliable classification results with COM, the dynamic range must be optimized to avoid too small or sparse matrices. Larger dynamic ranges for COM calculations do not necessarily give better texture results; they might increase the computation costs and limit the method performance.</p

Muonium Hyperfine Structure and the Decay μ+→e++ν‾e+νμ \mu ^+\to e^+ +\overline \nu _e +\nu _{\mu} in Models with Dilepton Gauge Bosons

We examine the muonium ($\mu ^+e^-$)-antimuonium ($\mu ^-e^+$) system in the models which accomodate the dilepton gauge bosons, and study their contributions to the ground state hyperfine splitting in ``muonium''. We also consider the exotic muon decay $\mu ^+\to e^+ +\overline \nu _e +\nu _{\mu}$ mediated by the dilepton gauge boson, and obtain a lower bound $(M_{X^{\pm }}/g_{3l})>550 \rm GeV$ at 90\% confidence level for the singly-charged dilepton mass using the unitarity relation of the Kobayashi-Maskawa matrix for the 3-family case.Comment: 8 pages, harvmac (extra preprint # and reference added

Online teacher training in a context for forced immobility: the Case of Gaza, Palestine

This article discusses an action research study that involved the design and delivery of an online training course for teachers of Arabic to speakers of other languages in the Gaza Strip (Palestine). Grounded in Freirean pedagogy, the course aimed to respond to the employment needs of university graduates by creating opportunities for online language teaching. The action research study explored the dynamics at play within the online educational environment, to evidence elements that challenged and/or facilitated effective collaboration between trainers and trainees. This article retraces and discusses the processes through which the course moved from didacticism to engaged critical pedagogy

Conceivable security risks and authentication techniques for smart devices

With the rapidly escalating use of smart devices and fraudulent transaction of users’ data from their devices, efficient and reliable techniques for authentication of the smart devices have become an obligatory issue. This paper reviews the security risks for mobile devices and studies several authentication techniques available for smart devices. The results from field studies enable a comparative evaluation of user-preferred authentication mechanisms and their opinions about reliability, biometric authentication and visual authentication techniques