713 research outputs found
The role of trait emotional intelligence in academic performance during the university transition: An integrative model of mediation via social support, coping, and adjustment
© 2015 Elsevier Ltd. The authors propose conceptual models linking trait emotional intelligence (TEI) with achievement both directly and indirectly via perceived social support (PSS), engagement coping (EC), and adjustment, in the context of the university transition. The models were tested in a multiwave design with a sample of incoming Australian undergraduates ( N = 470). In structural equation analyses, TEI was found to be a direct predictor of higher PSS and the greater use of EC strategies. Further, mediation analyses revealed that TEI was indirectly associated with academic adjustment via EC and psychological adjustment via EC and PSS operating in parallel. TEI was also found to be indirectly associated with achievement via EC and academic adjustment linked serially in a three-path mediated sequence. These direct and indirect relations were robust when controlling for known confounding influences. The empirically supported mediating processes extend the literature by elucidating some of the pathways through which TEI is linked with better adjustment and achievement
Performance interface document for users of Tracking and Data Relay Satellite System (TDRSS) electromechanically steered antenna systems (EMSAS)
Satellites that use the NASA Tracking and Data Relay Satellite System (TDRSS) require antennas that are crucial for performing and achieving reliable TDRSS link performance at the desired data rate. Technical guidelines are presented to assist the prospective TDRSS medium-and high-data rate user in selecting and procuring a viable, steerable high-gain antenna system. Topics addressed include the antenna gain/transmitter power/data rate relationship; Earth power flux-density limitations; electromechanical requirements dictated by the small beam widths, desired angular coverage, and minimal torque disturbance to the spacecraft; weight and moment considerations; mechanical, electrical and thermal interfaces; design lifetime failure modes; and handling and storage. Proven designs are cited and space-qualified assemblies and components are identified
Care-seeking decisions for worsening symptoms in heart failure: a qualitative metasynthesis
© 2015, Springer Science+Business Media New York. Over 50 % of heart failure (HF) patients delay seeking help for worsening symptoms until these reach acute levels and require emergency hospitalisation. This metasynthesis aimed to identify and explore factors influencing timely care-seeking in patients with HF. Electronic databases searched were MEDLINE, Embase, and CINAHL. Studies were included if they were peer-reviewed journal articles, written in English, and reported perspectives of HF patients following qualitative data collection and analysis. Forty articles underwent analysis following the approach of Thomas and Harden. Leventhal’s self-regulatory model (SRM) was used to organise the literature. Much of the literature fits within the SRM; however, this model did not account for all factors that influence patients’ care-seeking for worsening symptoms. Factors not accounted for included patients’ appraisals of previous care-seeking experiences, perceived system and provider barriers to accessing care, and the influence of external appraisals. When added to factors already represented in the model, such as misattribution of symptoms, not identifying with HF diagnosis, cognitive status, lack of understanding information provided, adaptation to symptoms, and emotional responses, a more comprehensive account of patients’ decision-making was revealed. This metasynthesis identified factors, as yet unaccounted for, in a prominent model, and has suggested a more comprehensive framework for addressing care-seeking in HF patients. This information can be used to tailor education, communication, and service initiatives to improve HF patients’ responses to worsening symptoms and target those most at risk of delay
The feminization of aging: How will this impact on health outcomes and services?
We conducted an integrative review to identify issues and challenges that face aging women and to distinguish areas for future research. We found that many older women continue to face inequities related to health and often are invisible within the discourse of aging policy. In this article we argue for a greater focus on the unique needs of women, a gendered approach to policy and intervention development, and promotion of the health of women across the life span. Policymakers, health care workers, and researchers need to consider the perspective of gender as well as age when implementing and evaluating effective interventions. © Taylor & Francis Group, LLC
Nanoparticles-cell association predicted by protein corona fingerprints
In a physiological environment (e.g., blood and interstitial fluids) nanoparticles (NPs) will bind proteins shaping a "protein corona" layer. The long-lived protein layer tightly bound to the NP surface is referred to as the hard corona (HC) and encodes information that controls NP bioactivity (e.g. cellular association, cellular signaling pathways, biodistribution, and toxicity). Decrypting this complex code has become a priority to predict the NP biological outcomes. Here, we use a library of 16 lipid NPs of varying size (Ø ≈ 100-250 nm) and surface chemistry (unmodified and PEGylated) to investigate the relationships between NP physicochemical properties (nanoparticle size, aggregation state and surface charge), protein corona fingerprints (PCFs), and NP-cell association. We found out that none of the NPs' physicochemical properties alone was exclusively able to account for association with human cervical cancer cell line (HeLa). For the entire library of NPs, a total of 436 distinct serum proteins were detected. We developed a predictive-validation modeling that provides a means of assessing the relative significance of the identified corona proteins. Interestingly, a minor fraction of the HC, which consists of only 8 PCFs were identified as main promoters of NP association with HeLa cells. Remarkably, identified PCFs have several receptors with high level of expression on the plasma membrane of HeLa cells
Nanoparticles-cell association predicted by protein corona fingerprints
In a physiological environment (e.g., blood and interstitial fluids) nanoparticles (NPs) will bind proteins shaping a "protein corona" layer. The long-lived protein layer tightly bound to the NP surface is referred to as the hard corona (HC) and encodes information that controls NP bioactivity (e.g. cellular association, cellular signaling pathways, biodistribution, and toxicity). Decrypting this complex code has become a priority to predict the NP biological outcomes. Here, we use a library of 16 lipid NPs of varying size (Ø ≈ 100-250 nm) and surface chemistry (unmodified and PEGylated) to investigate the relationships between NP physicochemical properties (nanoparticle size, aggregation state and surface charge), protein corona fingerprints (PCFs), and NP-cell association. We found out that none of the NPs' physicochemical properties alone was exclusively able to account for association with human cervical cancer cell line (HeLa). For the entire library of NPs, a total of 436 distinct serum proteins were detected. We developed a predictive-validation modeling that provides a means of assessing the relative significance of the identified corona proteins. Interestingly, a minor fraction of the HC, which consists of only 8 PCFs were identified as main promoters of NP association with HeLa cells. Remarkably, identified PCFs have several receptors with high level of expression on the plasma membrane of HeLa cells
The nurse educator role in the acute care setting in Australia: Important but poorly described
Objective The purpose of this paper is to describe the nurse educator role in the acute care setting in Australia. Method A literature review using Ganong's (1987) method of analysis was undertaken. Computerised databases were searched for articles published in English between 2000 and 2008 using the key words: 'education', 'nursing', 'nurse-educator', 'teaching methods', 'clinical', 'outcomes health care' and 'Australia'. Information was summarised to identify issues impacting on the nurse educator role using a standardised data extraction tool. Results The search strategies generated 152 articles and reports. The review identified that the nurse educator role is fundamental in supporting clinical practice and integral to developing a skilled and competent health workforce. Conclusion Confusion in nursing roles and role ambiguity contribute to the challenges for nurse educators in acute care. The absence of a national, standardised approach to role description and scope of practice in Australia may adversely impact role enactment. Further discussion and debate of the nurse educator role in Australia is warranted
Prehospital delay for acute coronary syndrome in China
Background: Despite the effectiveness of timely reperfusion therapy for acute coronary syndrome, prehospital delay remains a global concern. Objective: This article assesses the state-of-the-science regarding prehospital delay for acute coronary syndrome in China. Method: Electronic databases and hand searching were undertaken using key words such as prehospital delay, care-seeking delay, coronary heart disease, heart disease, acute coronary syndrome, unstable angina pain, acute myocardial infarction, cardiovascular disease, chest pain, and Chin (China/Chinese). The Chinese search was supervised by a Chinese health librarian. Results: Based on the search criteria, 28 studies were identified and reviewed using a standardized data extraction tool. Older age, attribution of symptoms to noncardiac causes, lack of health insurance coverage, poor access to transportation, and female sex were identified as contributing to prehospital delay. Conclusion: Health system reforms in China are necessary, particularly with regard to addressing the needs of older people, women, and other vulnerable populations in the context of the rising number of people with coronary heart disease. Developing targeted strategies, learned from both national and international experience, are required to develop targeted interventions. Copyright © 2010 Wolters Kluwer Health. Lippincott Williams & Wilkins
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