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Search Results: 1 - 10 of 11844 matches for " Ruth-Marie Nymark "
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Experimental Investigations of the Shear Capacity of Nails in a Row  [PDF]
Christian O. S?rensen, Ruth-Marie Nymark, Lars Baastad
Open Journal of Civil Engineering (OJCE) , 2013, DOI: 10.4236/ojce.2013.33021
Abstract:

Tests of the capacity of shear connections consisting of nails in a row placed at distances 7, 10 and 14d, “d” being the cross-sectional dimension of the nail, versus single nail capacities, were executed. The performed tests do support the connotation that no reduction should be required for nails of diameter 2.8 mm or less in a row, provided that nails are spaced sufficiently far apart for wood cracking not to occur. At the ultimate capacity of the joint, all such thin nails in a row will be yielding, having developed plastic hinges, i.e. each single nail will have developed its ultimate capacity. Hence, the ultimate capacity of the connection will be each nail’s capacity times the number of nails in the row. The force pr. nail increases subsequent to the development of a plastic hinge. This is likely due to the axial pullout-force, i.e. the ultimate capacity of a shear connection is higher than the force required for developing plastic hinges in the nails. This additional capacity-reserve may also partly be attributed to the rotational resistance of nails. The number of nails in a row should make insignificant difference in the pr. nail capacity, as long as no wood cracking takes place. Thus, applying elastic theory to nails in a row does not seem relevant. This is in contrast to bolt-connections.

Counting edge-Kempe-equivalence classes for 3-edge-colored cubic graphs
sarah-marie belcastro,Ruth Haas
Mathematics , 2012,
Abstract: Two edge colorings of a graph are {\em edge-Kempe equivalent} if one can be obtained from the other by a series of edge-Kempe switches. This work gives some results for the number of edge-Kempe equivalence classes for cubic graphs. In particular we show every 2-connected planar bipartite cubic graph has exactly one edge-Kempe equivalence class. Additionally, we exhibit infinite families of nonplanar bipartite cubic graphs with a range of numbers of edge-Kempe equivalence classes. Techniques are developed that will be useful for analyzing other classes of graphs as well.
Triangle-free Uniquely 3-Edge Colorable Cubic Graphs
Sarah-Marie Belcastro,Ruth Haas
Mathematics , 2015,
Abstract: This paper presents infinitely many new examples of triangle-free uniquely 3-edge colorable cubic graphs. The only such graph previously known was given by Tutte in 1976.
Evaluation of OwnHealth : a telephone based care management service for long-term conditions in the West Midlands
Iain Donald McNeil,Liv Nymark
International Journal of Integrated Care , 2012,
Abstract:
Zeroing in on AIDS and global health Post-2015
Kent Buse, Ruth Blackshaw, Marie-Goretti Ndayisaba
Globalization and Health , 2012, DOI: 10.1186/1744-8603-8-42
Abstract: This Viewpoint argues that today’s rapidly changing world, including its shifting geo-political and economic landscape, requires policy responses that are context-sensitive. We highlight the Shared Responsibility-Global Solidarity agenda, as pioneered by the African Union in its recent Roadmap on AIDS, tuberculosis, and malaria, to illustrate ways in which global health can be re-thought to tackle twenty-first century challenges. In light of the emerging debate on what a Post-2015 development agenda and accountability framework should look like, we argue that the AIDS response offers lessons as a pathfinder which can pave the way for global health responses in which the most marginalised are at the centre of the debate, human rights are protected under the rule of law, strong accountability is in place for results for people, and community and participatory processes are the norm. These hard-learned and -won principles of the AIDS response are critical if we are to realize a world in which there is zero inequality and health justice for all.December 1st marks World AIDS Day with the theme ‘Getting to zero’. Three short years ago, UNAIDS articulated what was then considered to be an ambitious vision – the aspiration for zero new HIV infections, zero discrimination and zero-AIDS related deaths. As we imagine the Post-2015 development agenda, we now can and should reconceptualise this vision as a set of concrete goals.In 2011, for the first time in the history of the AIDS response, the number of people receiving antiretroviral therapy in low- and middle-income countries (just over 8 million) outweighed those needing treatment, but without access [1]. With the number of people newly acquiring HIV continuing to decline, alongside progress in the scale-up of treatment coverage and evidence of the effectiveness of treatment for prevention, achieving the ‘three zeroes’ in the coming years is possible. Indeed, at the 2012 XIX International AIDS Conference in Washington, a nu
Assessing midwives' breastfeeding knowledge: Properties of the Newborn Feeding Ability questionnaire and Breastfeeding Initiation Practices scale
Debra K Creedy, Ruth M Cantrill, Marie Cooke
International Breastfeeding Journal , 2008, DOI: 10.1186/1746-4358-3-7
Abstract: A national postal survey of Australian midwives (n = 3500) was conducted in October 2001. Reliability was determined through Cronbach's alpha coefficient and stability determined by a test-retest. Content validity was established through a critical review of literature and review by an expert panel. Construct validity was informed by an exploratory factor analysis and principle component analysis with varimax rotation. Correlations between NFA and BKQ knowledge subscale scores and BIP and BKQ practice subscale scores assessed criterion validity. A multiple hierarchical regression analysis determined predictive validity of the NFA and BIP.A response rate of 31.6% (n = 1107) was achieved. Adequate internal consistency was established for both instruments. Five factors on the NFA questionnaire were congruent with knowledge about effects of skin-to-skin contact, physiological stability, newborn innate abilities, work practices and effective breastfeeding. The BIP revealed three factors related to observing pre-feeding behavior, mother/baby care and attachment and positioning practices. Predictive validity of knowledge was moderate (r = 0.481, p < 0.01) and contributed to 31.5% of variance in reported practice. Midwives with high knowledge scores were more likely to report best practice when assisting mothers to initiate breastfeeding. Midwives with more personal breastfeeding experience scored higher on all scales.The Newborn Feeding Ability questionnaire and the Breastfeeding Initiation Practices scale can contribute to practice development by assessing lactation and infant feeding knowledge and practice deficits. Individual learning needs can be identified, and effectiveness of education interventions evaluated using these tools. Further testing is required with other samples of midwives and health professionals involved in the promotion of breastfeeding.Healthcare service providers play a key support and educative role to mothers about human lactation and infant feed
Leadership and Faith in a School Tragedy: A School Principal’s Perspective  [PDF]
Ruth Tarrant
Psychology (PSYCH) , 2014, DOI: 10.4236/psych.2014.55051
Abstract:

On April 15, 2008, six students (aged 16 years) and one teacher (aged 29 years) from a New Zealand school lost their lives in a river canyoning tragedy. The present study investigated the school principal’s perspective of how he led his school through the tragedy, and the role of faith in the school’s coping. The school principal was interviewed two years after the event. The school’s Christian foundation was the fundamental source of strength and guidance for the principal, as well as for students, staff, teachers, and families in the immediate aftermath of the tragedy and in the two years following (i.e., to the time of the present study), the Christian culture of the school guiding decision-making. Support from outside the school (e.g. critical incident support; teaching support from other schools; social support from community agencies and civic leaders) also played an important role in assisting the school through the tragedy, particularly in the immediate aftermath of the event. Further studies are required that allow the voices of children, families and school staff to be heard regarding leadership strategies that impact on them through a disaster.

Study of Configural Reasoning and Written Discourse in Geometric Exercises of Proving  [PDF]
Ruth Cueva
Open Journal of Social Sciences (JSS) , 2016, DOI: 10.4236/jss.2016.42007
Abstract:

This article presents a study of configural reasoning and written discourse developed by students of the National Polytechnic School of Ecuador when performing geometrical exercises of proving.

Need for Timely Paediatric HIV Treatment within Primary Health Care in Rural South Africa
Graham S. Cooke, Kirsty E. Little, Ruth M. Bland, Hilary Thulare, Marie-Louise Newell
PLOS ONE , 2009, DOI: 10.1371/journal.pone.0007101
Abstract: Background In areas where adult HIV prevalence has reached hyperendemic levels, many infants remain at risk of acquiring HIV infection. Timely access to care and treatment for HIV-infected infants and young children remains an important challenge. We explore the extent to which public sector roll-out has met the estimated need for paediatric treatment in a rural South African setting. Methods Local facility and population-based data were used to compare the number of HIV infected children accessing HAART before 2008, with estimates of those in need of treatment from a deterministic modeling approach. The impact of programmatic improvements on estimated numbers of children in need of treatment was assessed in sensitivity analyses. Findings In the primary health care programme of HIV treatment 346 children <16 years of age initiated HAART by 2008; 245(70.8%) were aged 10 years or younger, and only 2(<1%) under one year of age. Deterministic modeling predicted 2,561 HIV infected children aged 10 or younger to be alive within the area, of whom at least 521(20.3%) would have required immediate treatment. Were extended PMTCT uptake to reach 100% coverage, the annual number of infected infants could be reduced by 49.2%. Conclusion Despite progress in delivering decentralized HIV services to a rural sub-district in South Africa, substantial unmet need for treatment remains. In a local setting, very few children were initiated on treatment under 1 year of age and steps have now been taken to successfully improve early diagnosis and referral of infected infants.
Validating child vaccination status in a demographic surveillance system using data from a clinical cohort study: evidence from rural South Africa
James Ndirangu, Ruth Bland, Till B?rnighausen, Marie-Louise Newell
BMC Public Health , 2011, DOI: 10.1186/1471-2458-11-372
Abstract: The sample includes 821 children in the Vertical Transmission cohort Study (VTS), who were born between December 2001 and April 2005, and were matched to the Africa Centre DSS, in northern KwaZulu-Natal. Vaccination information in the surveillance was collected retrospectively, using standardized questionnaires during bi-annual household visits, when the child was 12 to 23 months of age. DSS vaccination information was based on extraction from a vaccination card or, if the card was not available, on maternal recall. In the VTS, vaccination data was collected at scheduled maternal and child clinic visits when a study nurse administered child vaccinations. We estimated the sensitivity of the surveillance in detecting vaccinations conducted as part of the VTS during these clinic visits.Vaccination data in matched children in the DSS was based on the vaccination card in about two-thirds of the cases and on maternal recall in about one-third. The sensitivity of the vaccination variables in the surveillance was high for all vaccines based on either information from a South African Road-to-Health (RTH) card (0.94-0.97) or maternal recall (0.94-0.98). Addition of maternal recall to the RTH card information had little effect on the sensitivity of the surveillance variable (0.95-0.97). The estimates of sensitivity did not vary significantly, when we stratified the analyses by maternal antenatal HIV status. Addition of maternal recall of vaccination status of the child to the RTH card information significantly increased the proportion of children known to be vaccinated across all vaccines in the DSS.Maternal recall performs well in identifying vaccinated children aged 12-23 months (both in HIV-infected and HIV-uninfected mothers), with sensitivity similar to information extracted from vaccination cards. Information based on both maternal recall and vaccination cards should be used if the aim is to use surveillance data to identify children who received a vaccination.Child vacc
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