Comparison of calculated and measured lower critical field for some Nb-Ti alloys

Calculation of lower critical fields and comparison with measured values for some niobium-titanium alloy

Promoting healthy parenting practices across cultural groups: a CDC research brief

Promoting Healthy Parenting Practices Across Cultural Groups: A CDC Research Brief summarizes findings from a CDC study on cultural values and parenting and child rearing. The study focused on five cultural groups--African-Americans, American Indians, Asian-Americans, Hispanic-Americans, and non-Hispanic Whites. It examined the ways that parents respond to children's behavior and their views of desirable or undesirable parenting practices. Uncovering the differences and commonalities in values, normative practices, and child-rearing goals across cultural groups is an important step in developing culturally-competent and effective programs and support for parents of all cultural backgrounds.authors, Keri M. Lubell, Teresa Lofton, Helen Harber Singer.A publication of the Centers for Disease Control and Prevention's National Center for Chronic Disease Prevention and Health Promotion, the National Center for Injury Prevention and Control, and the Adolescent Goals TeamAlso available via the World Wide Web.Includes bibliographical references (p. 17-18)Lubell KM, Lofton T, Singer HH. Promoting Healthy Parenting Practices Across Cultural Groups: A CDC Research Brief. Atlanta (GA): Centers for Disease Control and Prevention, National Center for Injury Prevention and Control; 2008

Medical Investigation and Documentation of Torture: A Handbook for Health Professionals

This Handbook is primarily aimed at raising awareness of relevant medical ethical, legal and professional standards of the many health professionals who would wish to do the most conscientious job, with a view to helping victims of torture and contributing to efforts to eliminate the practice. The key task is to establish the most scientifically valid documentation concerning possible torture of individuals, consistent with the often difficult conditions under which the work sometimes has to be undertaken. It is inspired by The Istanbul Protocol, approved by United Nations bodies, which lays down the best professional standards for physicians working in the field. Yet it recognises that not all health professionals called on to do the work will have extensive experience in this field and it presents the material in a way that aims to be accessible to all these professionals. Guidance is given in the general skills of interviewing, as well as the medical examination and documentation. In addition to the relevant ethical and legal principles, the Handbook also points to sources of advice for those who wish to further their knowledge or gain support and advice on particular situations

The Consequence of Self-field and Non-uniform Current Distribution on Short Sample Tests of Superconducting Cables

Electrical measurements on samples of superconducting cables are usually performed in order to determine the critical current $I_c$ and the n-value, assuming that the voltage U at the transition from the superconducting to the normal state follows the power law, U\sim($I/I_c$)$^n$. An accurate measurement of $I_c$ and n demands, first of all, good control of temperature and field, and precise measurement of current and voltage. The critical current and n-value of a cable are influenced by the self-field of the cable, an effect that has to be known in order to compare the electrical characteristics of the cable with those of the strands from which it is made. The effect of the self-field is dealt with taking into account the orientation and magnitude of the applied field and the n-value of the strands. An important source of inaccuracy is related to the distribution of the currents among the strands. Non-uniform distributions, mainly caused by non-equal resistances of the connections between the strands of the cable and the current leads, can easily result in a misinterpretation of the measured critical current and n-value by 5% and 50% respectively. In this paper this effect is explained in detail, taking also into account the influence of the current ramp-rate (during a voltage-current measurement), the sample length, the contact resistance between the strands and the placement of the voltage taps

Core-periphery or decentralized? Topological shifts of specialized information on Twitter

In this paper we investigate shifts in Twitter network topology resulting from the type of information being shared. We identified communities matching areas of agricultural expertise and measured the core-periphery centralization of network formations resulting from users sharing generic versus specialized information. We found that centralization increases when specialized information is shared and that the network adopts decentralized formations as conversations become more generic. The results are consistent with classical diffusion models positing that specialized information comes with greater centralization, but they also show that users favor decentralized formations, which can foster community cohesion, when spreading specialized information is secondary

Magnetic flux flow and superconductor stabilization Quarterly report, 1 Jan. - 31 Mar. 1968

Magnetic flux flow and stability of superconducting niobium titanium strip

Integrating Plug-in Electric Vehicles into the Grid: Policy Entrepreneurship in California

The deployment of large numbers of plug-in electric vehicles (PEVs), in order to satisfy zero-emission-vehicle (ZEV) goals in California, brings both potential benefits and costs for the electric grid. Since early 2009, the issue of so-called vehicle-grid integration (VGI) has become a center-stage policy discussion among the electricity and transportation sectors. By conducting a policy process analysis, this research addresses the questions of how the policy process for VGI regulations has been formed in California, and what have been the major challenges in policy-making. A series of interviews were conducted between with representatives of 18 organizations from the government, electric utility, and PEV sectors. The qualitative data is analyzed under the three dimensions of policy process; problem, politics, and policy as suggested by Multiple Streams framework (Kingdon, 1995). The results show that a policy window for VGI regulations was opened for the first time by the political stream, through State Senate Bill 626 in 2009, and later, supported by the Governor’s ZEV action plan in 2012. In response, the California Public Utility Commission became a policy entrepreneur, and has adopted an incremental policy-making strategy targeting investor-owned utilities (IOUs). The two largest barriers facing an effective policy solution are identified as the complexities involved in quantifying economic value from VGI and the feasibility concerns about adopting VGI enabling technologies on the grid

Cost-effectiveness analysis of introducing RDTs for malaria diagnosis as compared to microscopy and presumptive diagnosis in central and peripheral public health facilities in Ghana.

Cost-effectiveness information on where malaria rapid diagnostic tests (RDTs) should be introduced is limited. We developed incremental cost-effectiveness analyses with data from rural health facilities in Ghana with and without microscopy. In the latter, where diagnosis had been presumptive, the introduction of RDTs increased the proportion of patients who were correctly treated in relation to treatment with antimalarials, from 42% to 65% at an incremental societal cost of Ghana cedis (GHS)12.2 (US$8.3) per additional correctly treated patients. In the "microscopy setting" there was no advantage to replacing microscopy by RDT as the cost and proportion of correctly treated patients were similar. Results were sensitive to a decrease in the cost of RDTs, which cost GHS1.72 (US$1.17) per test at the time of the study and to improvements in adherence to negative tests that was just above 50% for both RDTs and microscopy

Predictors of disease severity in children presenting from the community with febrile illnesses: a systematic review of prognostic studies.

Early identification of children at risk of severe febrile illness can optimise referral, admission and treatment decisions, particularly in resource-limited settings. We aimed to identify prognostic clinical and laboratory factors that predict progression to severe disease in febrile children presenting from the community. We systematically reviewed publications retrieved from MEDLINE, Web of Science and Embase between 31 May 1999 and 30 April 2020, supplemented by hand search of reference lists and consultation with an expert Technical Advisory Panel. Studies evaluating prognostic factors or clinical prediction models in children presenting from the community with febrile illnesses were eligible. The primary outcome was any objective measure of disease severity ascertained within 30 days of enrolment. We calculated unadjusted likelihood ratios (LRs) for comparison of prognostic factors, and compared clinical prediction models using the area under the receiver operating characteristic curves (AUROCs). Risk of bias and applicability of studies were assessed using the Prediction Model Risk of Bias Assessment Tool and the Quality In Prognosis Studies tool. Of 5949 articles identified, 18 studies evaluating 200 prognostic factors and 25 clinical prediction models in 24 530 children were included. Heterogeneity between studies precluded formal meta-analysis. Malnutrition (positive LR range 1.56-11.13), hypoxia (2.10-8.11), altered consciousness (1.24-14.02), and markers of acidosis (1.36-7.71) and poor peripheral perfusion (1.78-17.38) were the most common predictors of severe disease. Clinical prediction model performance varied widely (AUROC range 0.49-0.97). Concerns regarding applicability were identified and most studies were at high risk of bias. Few studies address this important public health question. We identified prognostic factors from a wide range of geographic contexts that can help clinicians assess febrile children at risk of progressing to severe disease. Multicentre studies that include outpatients are required to explore generalisability and develop data-driven tools to support patient prioritisation and triage at the community level. CRD42019140542

Magnetic flux flow and superconductor stabilization Quarterly report, Apr. 1 - Jun. 30, 1967

Magnetic flux flow and superconductor stabilizatio