2,874 research outputs found

    Fixing numbers for matroids

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    Motivated by work in graph theory, we define the fixing number for a matroid. We give upper and lower bounds for fixing numbers for a general matroid in terms of the size and maximum orbit size (under the action of the matroid automorphism group). We prove the fixing numbers for the cycle matroid and bicircular matroid associated with 3-connected graphs are identical. Many of these results have interpretations through permutation groups, and we make this connection explicit.Comment: This is a major revision of a previous versio

    Women and Leadership: An Integrative Focus on Equality

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    This article explores the importance of equality in leadership practice; describes an inclusive approach to effective leadership; and summarizes examples of contemporary and inclusive leadership models. It identifies the barriers and challenges that women face in advancing into top-level leadership positions and outlines a balanced approach to leadership that embraces equality and honors both feminine and masculine leadership principles

    Beyond Contract-versus-Charity, Toward Participation and Provision: On the Concept of Social Citizenship

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    Also CSST Working Paper #76.http://deepblue.lib.umich.edu/bitstream/2027.42/51238/1/472.pd

    Strengthening Unarmed Community Self-protection in Cameroon's Anglophone Conflict

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    This brief discusses the innovative unarmed civilian self-protection strategies employed by individuals, groups and communities affected by the armed conflict and their accompanying challenges. In doing so, it not only emphasises the urgency in finding sustainable solution to the conflict, but equally demonstrates the resilience, resourcefulness, and pro-activeness of civilians in protecting themselves in violent contexts. Some key recommendations are provided for future policy and programmatic interventions

    Gay/Lesbian sexual orientation increases risk for cigarette smoking and heavy drinking among members of a large Northern California health plan

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    BACKGROUND AND SIGNIFICANCE: Tobacco and alcohol use and related morbidity and mortality are critical public health problems. Results of several, but not all, studies suggest that lesbians and gay men are at elevated risk for smoking tobacco and alcohol misuse. METHODS: Data from random sample general health surveys of adult members of a large Northern California Health Plan conducted in 1999 and 2002 were analyzed using gender-based multivariate logistic regression models to assess whether lesbians (n = 210) and gay men (n = 331) aged 20–65 were more likely than similarly aged heterosexual women (n = 12,188) and men (n = 9342) to be smokers and heavy drinkers. RESULTS: After adjusting for age, race/ethnicity, education, and survey year, lesbians were significantly more likely than heterosexual women to be heavy drinkers (OR 2.14, 95% CI 1.08, 4.23) and current smokers (OR 1.60, 95% CI 1.02, 2.51). Among men, gays were significantly more likely than heterosexuals to be current smokers (OR 2.40, 95% CI 1.75, 3.30), with borderline significant increased risk for heavy drinking (OR 1.54, 95% CI 0.96, 2.45). CONCLUSION: Lesbians and gay men may be at increased risk for morbidity and mortality due to higher levels of cigarette and alcohol use. More population-based research is needed to understand the nature of substance use in these communities so that appropriate interventions can be developed

    Perceptions of Graduates from a Canadian Bachelor of Nursing Program: Preparing for the Registered Nurse National Council Licensure Examination (NCLEX-RN) (Perceptions des diplômées d’un programme canadien de baccalauréat en sciences infirmières : préparation à l’examen pour infirmières autorisées du National Council Licensure Examination (NCLEX-RN)

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    Perceptions of Graduates from a Canadian Bachelor of Nursing Program: Preparing for the Registered Nurse National Council Licensure Examination (NCLEX-RN) As a self-regulated profession, nursing in Canada is based on legislation enacted by provincial and territorial associations with the purpose of protecting the public from harm (Marquis & Trajan, 2012). Since 1970 most Canadian jurisdictions required completion of national examinations to obtain professional licensure (Elliott, Rutty & Villeneuve, 2013; Kovner & Spetz, 2013). In 2011 the Canadian Council of Registered Nurse Regulators (CCRNR) announced the Canadian Registered Nurse Examination (CRNE) would be replaced with the National Council Licensure Examination-Registered Nurse (NCLEX-RN) developed in the United States as the new requirement for registered nurses (RN) to enter practice in Canada. The implementation of the NCLEX-RN in 2015 stimulated extensive dialogue among nursing stakeholders in Canada. Preliminary exam results indicated that the first cohort of Canadian NCLEX-RN writers had lower scores than both previous CRNE results and the NCLEX-RN pass rates of writers in the United States (Hobbins & Bradley, 2013; PennellSebekos, 2015). A key factor impacting NCLEX-RN success is strategies used by candidates to prepare for the exam. This paper describes research undertaken to investigate the perceptions of the first cohort of graduates from an Atlantic Canada Bachelor of Nursing (BN) program about their NCLEX-RN preparations. The investigation focused on strategies employed by participants prior to, and after program completion, and how these preparations aligned with their experiences in writing the exam. Résumé La profession infirmière au Canada étant autorégulée, elle se fonde sur la législation adoptée par les ordres professionnels des provinces et territoires afin de protéger le public de tout danger (Marquis & Trajan, 2012). Depuis 1970, la plupart des autorités canadiennes en la matière exigent la réussite d’un examen national en vue de l’obtention du permis d’exercer professionnellement (Elliott, Rutty & Villeneuve, 2013; Kovner & Spetz, 2013). En 2011, le Conseil canadien des organismes de réglementation de la profession infirmière (CCORPI) a annoncé que l’Examen d’autorisation infirmière au Canada (EAIC) serait remplacé par l’examen américain pour infirmières autorisées du National Council Licensure Examination (NCLEX-RN), à titre de nouvelle exigence d’entrée dans la pratique des infirmières autorisées au Canada. L’implantation du NCLEX-RN, en 2015, a engendré de nombreuses discussions parmi les diverses parties prenantes du domaine infirmier au pays. Les résultats de l’examen préliminaire indiquaient que la première cohorte de diplômées canadiennes à passer le NCLEX-RN a obtenu des notes inférieures aux deux EAIC précédents et un taux plus faible de réussite que les candidates américaines au NCLEX-RN (Hobbins & Bradley, 2013; Pennell-Sebekos, 2015). Un facteur essentiel de réussite du NCLEX-RN est le suivant: les stratégies adoptées par les candidates pour se préparer à l’examen. Cet article décrit la recherche entreprise pour examiner les perceptions de la première cohorte de diplômées d’un programme de baccalauréat en sciences infirmières dans la région atlantique en ce qui concerne leur préparation à l’examen NCLEX-RN. La recherche portait sur les stratégies employées par les participantes avant et après la fin de leur programme, et sur le parallèle entre cette préparation et leur expérience en cours d’examen

    Using nonfat milk solids. Part III, Yeast bread and rolls

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    Mitochondrial cytochrome c oxidase subunit IV is phosphorylated by an endogenous kinase

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    AbstractThis study was undertaken to identify novel mitochondrial membrane proteins that are potential targets for phosphorylation. Mitochondrial membranes were incubated in the presence of [γ-32P]ATP and the Triton X-114 extractable protein was subjected to ion-exchange and polyacrylamide gel chromatography to purify a major phosphorylated protein of approximately 17 000 Da. The determined peptide sequence of the purified phosphoprotein corresponded to a segment of cytochrome c oxidase subunit IV, an inner membrane protein of 17 160 Da. The identity of the phosphoprotein was confirmed by two-dimensional electrophoresis and Western blotting. The results identify mitochondrial cytochrome c oxidase subunit IV as a protein which is phosphorylated by an endogenous kinase

    Modulation of pulmonary vasomotor tone in the fetus and neonate

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    The high pulmonary vascular resistance (PVR) of atelectatic, hypoxic, fetal lungs limits intrauterine pulmonary blood flow (PBF) to less than 10% of combined right and left ventricular output. At birth, PVR decreases precipitously to accommodate the entire cardiac output. The present review focuses on the role of endothelium-derived nitric oxide (NO), prostacyclin, and vascular smooth muscle potassium channels in mediating the decrease in PVR that occurs at birth, and in maintaining reduced pulmonary vasomotor tone during the neonatal period. The contribution of vasodilator and vasoconstrictor modulator activity to the pathophysiology of neonatal pulmonary hypertension is also addressed
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