905 resultados para Moving Barrier-to-Vehicle Impact Tests.
Resumo:
Ensuring sustainable use of natural resources is crucial for maintaining the basis for our livelihoods. With threats from climate change, disputes over water, biodiversity loss, competing claims on land, and migration increasing worldwide, the demands for sustainable land management (SLM) practices will only increase in the future. For years already, various national and international organizations (GOs, NGOs, donors, research institutes, etc.) have been working on alternative forms of land management. And numerous land users worldwide – especially small farmers – have been testing, adapting, and refining new and better ways of managing land. All too often, however, the resulting SLM knowledge has not been sufficiently evaluated, documented and shared. Among other things, this has often prevented valuable SLM knowledge from being channelled into evidence-based decision-making processes. Indeed, proper knowledge management is crucial for SLM to reach its full potential. Since more than 20 years, the international WOCAT network documents and promotes SLM through its global platform. As a whole, the WOCAT methodology comprises tools for documenting, evaluating, and assessing the impact of SLM practices, as well as for knowledge sharing, analysis and use for decision support in the field, at the planning level, and in scaling up identified good practices. In early 2014, WOCAT’s growth and ongoing improvement culminated in its being officially recognized by the UNCCD as the primary recommended database for SLM best practices. Over the years, the WOCAT network confirmed that SLM helps to prevent desertification, to increase biodiversity, enhance food security and to make people less vulnerable to the effects of climate variability and change. In addi- tion, it plays an important role in mitigating climate change through improving soil organic matter and increasing vegetation cover. In-depth assessments of SLM practices from desertification sites enabled an evaluation of how SLM addresses prevalent dryland threats. The impacts mentioned most were diversified and enhanced production and better management of water and soil degradation, whether through water harvesting, improving soil moisture, or reducing runoff. Among others, favourable local-scale cost-benefit relationships of SLM practices play a crucial role in their adoption. An economic analysis from the WOCAT database showed that land users perceive a large majority of the technologies as having benefits that outweigh costs in the long term. The high investment costs associated with some practices may constitute a barrier to adoption, however, where appropriate, short-term support for land users can help to promote these practices. The increased global concerns on climate change, disaster risks and food security redirect attention to, and trigger more funds for SLM. To provide the necessary evidence-based rationale for investing in SLM and to reinforce expert and land users assessments of SLM impacts, more field research using inter- and transdisciplinary approaches is needed. This includes developing methods to quantify and value ecosystem services, both on-site and off-site, and assess the resilience of SLM practices, as currently aimed at within the EU FP7 projects CASCADE and RECARE.
Resumo:
Operating room (OR) team safety training and learning in the field of dialysis access is well suited for the use of simulators, simulated case learning and root cause analysis of adverse outcomes. The objectives of OR team training are to improve communication and leadership skills, to use checklists and to prevent errors. Other objectives are to promote a change in the attitudes towards vascular access from learning through mistakes in a nonpunitive environment, to positively impact the employee performance and to increase staff retention by making the workplace safer, more efficient and user friendly.
Resumo:
This study has the purpose of determining the barriers and facilitators to nurses' acceptance of the Johnson and Johnson Protectiv®* Plus IV catheter safety needle device and implications for needlestick injuries at St. Luke's Episcopal Hospital, Houston, Texas. A one-time cross-sectional survey of 620 responding nurses was conducted by this researcher during December, 2000. The study objectives were to: (1) describe the perceived (a) organizational and individual barriers and facilitators and (b) acceptance of implementation of the IV catheter device; (2) examine the relative importance of these predictors; (3) describe (a) perceived changes in needlestick injuries after implementation of the device; (b) the reported incidence of injuries; and (c) the extent of underreporting by nurses; and (4) examine the relative importance of (a) the preceding predictors and (b) acceptance of the device in predicting perceived changes in needlestick injuries. Safety climate and training were evaluated as organizational factors. Individual factors evaluated were experience with the device, including time using it and frequency of use, and background information, including nursing unit, and length of time as a nurse in this hospital and in total nursing career. The conceptual framework was based upon the safety climate model. Descriptive statistics and multiple and logistic regression were utilized to address the study objectives. ^ The findings showed widespread acceptance of the device and a strong perception that it reduced the number of needlesticks. Acceptance was notably predicted by adequate training, appropriate time between training and device use, solid safety climate, and short length of service, in that order. A barrier to acceptance was nurses' longtime of use of previous needle technologies. Over four-fifths of nurses were compliant in always using the device. Compliance had two facilitators: length of time using device and, to a lesser extent, safety climate. Rates of compliance tended to be lower among nurses in units in which the device was frequently used. ^ High quality training and an atmosphere of caring about nurse safety stand out as primary facilitators that other institutions would need to adopt in order to achieve maximum success in implementing safety programs involving utilization of new safety devices. ^
Resumo:
This paper examines the mean-reverting property of real exchange rates. Earlier studies have generally not been able to reject the null hypothesis of a unit-root in real exchange rates, especially for the post-Bretton Woods floating period. The results imply that long-run purchasing power parity does not hold. More recent studies, especially those using panel unit-root tests, have found more favorable results, however. But, Karlsson and Löthgren (2000) and others have recently pointed out several potential pitfalls of panel unit-root tests. Thus, the panel unit-root test results are suggestive, but they are far from conclusive. Moreover, consistent individual country time series evidence that supports long-run purchasing power parity continues to be scarce. In this paper, we test for long memory using Lo's (1991) modified rescaled range test, and the rescaled variance test of Giraitis, Kokoszka, Leipus, and Teyssière (2003). Our testing procedure provides a non-parametric alternative to the parametric tests commonly used in this literature. Our data set consists of monthly observations from April 1973 to April 2001 of the G-7 countries in the OECD. Our two tests find conflicting results when we use U.S. dollar real exchange rates. However, when non-U.S. dollar real exchange rates are used, we find only two cases out of fifteen where the null hypothesis of an unit-root with short-term dependence can be rejected in favor of the alternative hypothesis of long-term dependence using the modified rescaled range test, and only one case when using the rescaled variance test. Our results therefore provide a contrast to the recent favorable panel unit-root test results.
Resumo:
Health Information Exchange (HIE) will play a key part in our nation’s effort to improve healthcare. The evidence of HIEs transformational role in healthcare delivery systems is quite limited. The lack of such evidence led us to explore what exists in the healthcare industry that may provide evidence of effectiveness and efficiency of HIEs. The objective of the study was to find out how many fully functional HIEs are using any measurements or metrics to gauge impact of HIE on quality improvement (QI) and on return on investment (ROI).^ A web-based survey was used to determine the number of operational HIEs using metrics for QI and ROI. Our study highlights the fact that only 50 percent of the HIEs who responded use or plan to use metrics. However, 95 percent of the respondents believed HIEs improve quality of care while only 56 percent believed HIE showed positive ROI. Although operational HIEs present numerous opportunities to demonstrate the business model for improving health care quality, evidence to document the impact of HIEs is lacking. ^
Resumo:
Child overweight and obesity reaches across ethnic, cultural, socioeconomic and regional barriers. It must be assessed, diagnosed and treated to help families make sustainable behavior changes. Treatment recommendations have been made to address pediatric overweight and obesity. They include screening for risk factors, monitoring BMI trends and educating patients and families to make small sustainable changes. Health insurance companies can play a meaningful role in supporting and facilitating provider education and behavior change to diagnose, treat and prevent pediatric overweight and obesity.^ The aims of this thesis were: (1) Describe a disease management program that uses evidence-based practices to create provider behavior change related to pediatric obesity screening, diagnosis and treatment. (2) Identify ways to improve the implementation of the program based on the perceptions of participating clinicians.^ A literature review was completed to evaluate current recommendations for screening and treating pediatric obesity using the Ovid data base. The evidenced-based recommendations were compared against the practices of the Healthy Lifestyles Program (HeLP). The literature confirmed that HeLP is following evidence-based recommendations for assessment, diagnosis and treatment of pediatric obesity.^ A Children’s Mercy Family Health Partners focus group was convened to create a provider survey. The goals of the survey were to assess providers’ perception of the Healthy Lifestyles Program (HeLP). The survey was sent out through email using Survey Monkey. All survey responses were anonymous. The survey was sent to a total of 80 providers who had completed HeLP. Twenty-five percent responded. The survey results were evaluated to make recommendations for HeLP.^ Results of the survey included motivating factors for participation in HeLP. Concern about the increasing prevalence of pediatric obesity was a frequent motivator for participation. Provider barriers to obesity diagnosis were evaluated. Lack of time during clinic visits a frequent barrier to obesity diagnosis. ^ In conclusion several recommendations for the HeLP were made based on survey results. It is recommended that the program evaluate methods and tools for facilitating effective weight management follow up visits. Promotional materials should highlight the increasing prevalence of pediatric obesity when advertising HeLP. These recommendations will be used to refine the current Healthy Lifestyles Program.^
Resumo:
Much has been written about the relation of social support to health outcomes. Support networks were found to be predictive of health status. Not so clear was the manner in which social support helped the individual to avoid health complications. Whereas some aspects of the support network were protective, others were burdensome. Duties to one's network could serve as a stressor and duties outside one's network might stress the support system itself. Exposure to one's network was associated with certain health risks while disruption in one's social support network was associated with other health risks.^ Many factors contributed to the impact of a social support network upon the individual member: the characteristics of the individual, the individual's role or position within the network, qualities of the network and duties or indebtedness of the individual to the network. This investigation considered the possibility that performance could serve as a stressor in a fashion similar to an exposure to a health hazard.^ Because the literature includes many examples of studies in which the subjects were college students, academic progress is a performance common to most subjects. A profile of the support networks of successful students was contrasted with those of less successful students in this correlational study.^ What was uncovered in this investigation was a very complex web of interrelated constructs. Most aspects of the social support network did not significantly predict academic performance. Only a limited number of characteristics were associated with academic success: the frequency of support, student age, the existence of a 'mentor' within one' s network, and the extent to which one received a predominant source of support. Other factors had a tendency to be negatively correlated with midterm grade, suggesting those factors may impede academic performance.^ Medical status did not predict grades, but was correlated with many aspects of the network. Disruptions in particular parts of one's network were correlated with particular health categories. In fact, disruption in social support was more predictive of academic outcomes than medical complications. Whereas the individual's values were related to the contributing factors, only the individual's satisfaction with certain aspects of the support network were predictive of higher midterm grades in a psychology class. Dissatisfaction was associated with lower grades, suggesting a disruptive effect within the network. Associations among the features of support networks which predicted academic progress were considered. ^
Resumo:
Community health workers (CHWs) can serve as a bridge between healthcare providers and communities to positively impact social determinants of health and, thus, the overall health of the population. The potential to effect lasting change is particularly significant within resource-poor settings with limited access to formally trained health care providers such as the small, rural village of Santa Ana Intibucá, Honduras and surrounding areas—located on the geographically and politically isolated border of Honduras and El Salvador. The Baylor Shoulder to Shoulder Foundation (BSTS) works in conjunction with Santa Ana's volunteer health committee to bring a health brigade that has provided health care and public health projects to the area at least twice a year since 2001. They have also hired a full-time Honduran physician, a Honduran in-country administrative director, and built a clinic; yet, no community health worker program exists. This CHW program model is the response to a clear need for a CHW program within the area served by BSTS and presents a CHW program model specific to Santa Ana Intibucá and surrounding areas to be implemented by BSTS. Methods used to develop this model include reviewing the literature for recommendations from leading authorities as well as successfully implemented CHW programs in comparable regions. This information was incorporated into existing knowledge and materials currently being used in the area. Using the CHW model proposed here, each brigade, in conjunction with the communities served, can help develop new modules to respond to the specific health priorities of the region at that time, incorporating consistent modes of contact with the local physician and the CHWs to provide refresher courses, training in new topics of interest, and to be reminded of the importance of community health workers' role as the critical link to healthy societies. With cooperation, effort, and support, the brigade can continue to help integrate a sustainable CHW system in which communities may be able to maximize the care they receive while also learning to care for their own health and the future of their communities.^
Resumo:
Objectives. Obesity is a growing problem in the United States among children. Great efforts are being made to target this problem, both at home and at school. While parents and peers have proven an effective means of distributing information, the well of the influence of teacher encouragement of health behaviors remains untapped. The purpose of this study is to assess the association of teacher encouragement with diet and physical activity behaviors and obesity in a sample of eighth grade students in central Texas. ^ Methods. In the spring of 2011, the Coordinated Approach to Child Health (CATCH) study distributed teacher surveys to each of the teachers in the schools on the grant. In addition to questions concerning the implementation of CATCH, this survey employed social support questions to gauge the prevalence of teacher encouragement of health behaviors in the classroom. During the same time frame, eighth graders in these same schools completed student surveys which assessed dietary and physical activity knowledge and behaviors and demographics and participated in objective measures of student height and weight. A cross-sectional secondary data analysis was conducted in order to compare self-reported teacher encouragement to student behaviors and several student obesity measures on a by school basis. ^ Results. 1150 teachers and 2582 students from 29 of the 30 measurement schools returned completed surveys. No statistically significant relationship was found between the six teacher encouragement measures and their corresponding student reported health behaviors, nor was one found the mean support per school and child percent overweight. A menial positive relationship was found between the mean support per school and child BMI z-scores, BMI, and percent obese (p = 0.035, 0.003 and 0.003, respectively); however, these relationships were not in the predicted direction. ^ Conclusion. While the findings of this investigation show primarily null results, motivating questions as to the impact to teacher encouragement on middle school student's health remain. It is possible that in order to draw more effective conclusions, more comprehensive studies are warranted which specifically target these relationships.^
Resumo:
Catheter related bloodstream infections are a significant barrier to success in many inpatient healthcare facilities. The goal of this study was to analyze and determine if an evidence based methodology to reduce the number of catheter related bloodstream infections in a pediatric inpatient healthcare facility had significant impact on the infection rate. Catheter related bloodstream infection rates were compared before and after program implementation. The patient population was selected based upon a recommendation in the 2010 National Healthcare Safety Network report on device related infections. This report indicated a need for more data on pediatric populations requiring admission to a long term care facility. The study design is a retrospective cohort study. Catheter related bloodstream infection data was gathered between 2008 and 2011. In October of 2008 a program implementation began to reduce the number of catheter related bloodstream infections. The key components of this initiative were to implement a standardized catheter maintenance checklist, introduce the usage of a chlorhexadine gluconate based product for catheter maintenance and skin antisepsis, and a multidisciplinary education plan that focused on hand hygiene and aseptic technique. The catheter related bloodstream infection rate in 2008 was 21.21 infections per 1000 patient-line days. After program implementation the 2009 catheter related bloodstream infection rate dropped to 1.11 per 1000 patient-line days. The infection rates in 2010 and 2011 were 2.19 and 1.47 respectively. Additionally, this study demonstrated that there was a potential cost savings of $620,000 to $1,240,000 between 2008 and 2009. In conclusion, an evidence based program based upon CDC guidelines can have a significant impact on catheter related bloodstream infection rates. ^
Resumo:
Globalization has resulted in unprecedented movements of people, goods, and alien species across the planet. Although the impacts of biological invasions are widely appreciated, a bias exists in research effort to post-dispersal processes because of the difficulties of measuring propagule pressure. The Antarctic provides an ideal model system in which to investigate propagule movements because of the region's isolation and small number of entry routes. Here we investigated the logistics operations of the South African National Antarctic Programme (SANAP) and quantified the initial dispersal of alien species into the region. we found that over 1400 seeds from 99 taxa are transported into the Antarctic each field season in association with SANAP passenger luggage and cargo. The first ever assessment of propagule drop-off indicated that 30-50% of these propagules will enter the recipient environment. Many of the taxa include cosmopolitan weeds and known aliens in the Antarctic, indicating that logistics operations form part of a globally self-perpetuating cycle moving alien species between areas of human disturbance. in addition, propagules of some taxa native to the Antarctic region were also found, suggesting that human movements may be facilitating intra-regional homogenization. Several relatively simple changes in biosecurity policy that could significantly reduce the threat of introduction of nonnative species are suggested.
Resumo:
En este trabajo se comunican los resultados preliminares de una investigación más amplia sobre desempeño y autopercepción en lectura y escritura de alumnos universitarios. Se trata en este caso de los resultados en comprensión verbal, dadas las relaciones que guarda con la comprensión lectora. Esta última constituye un aspecto crítico, particularmente en la construcción del modelo de situación , que se logra vía integración de la información proporcionada por el texto con el conocimiento previo relevante. Para su estudio se seleccionó una muestra piloto aleatoria de 60 alumnos de tercer año, de ambos sexos, de 23 años de edad promedio, a los que se les aplicó colectivamente las pruebas Vocabulario, Información y Analogías del WAIS III. Los resultados en el Índice de Comprensión Verbal muestran medidas de tendencia central semejantes a los de la muestra de tipificación y una dispersión menor, con casos particulares con puntuaciones en el límite inferior del promedio. Se hacen observaciones respecto del desempeño en población universitaria y sobre algunas particularidades acerca del tipo de errores en las respuestas proporcionadas, que merecen consideraciones adicionales. En principio indican ausencia e insuficiencia de información, confusiones conceptuales en algunos términos de uso relativamente frecuente y dificultades en la formación de conceptos, situación a ser atendida por sus implicaciones en el aprendizaje exitoso a partir de los textos
Resumo:
En este trabajo se comunican los resultados preliminares de una investigación más amplia sobre desempeño y autopercepción en lectura y escritura de alumnos universitarios. Se trata en este caso de los resultados en comprensión verbal, dadas las relaciones que guarda con la comprensión lectora. Esta última constituye un aspecto crítico, particularmente en la construcción del modelo de situación , que se logra vía integración de la información proporcionada por el texto con el conocimiento previo relevante. Para su estudio se seleccionó una muestra piloto aleatoria de 60 alumnos de tercer año, de ambos sexos, de 23 años de edad promedio, a los que se les aplicó colectivamente las pruebas Vocabulario, Información y Analogías del WAIS III. Los resultados en el Índice de Comprensión Verbal muestran medidas de tendencia central semejantes a los de la muestra de tipificación y una dispersión menor, con casos particulares con puntuaciones en el límite inferior del promedio. Se hacen observaciones respecto del desempeño en población universitaria y sobre algunas particularidades acerca del tipo de errores en las respuestas proporcionadas, que merecen consideraciones adicionales. En principio indican ausencia e insuficiencia de información, confusiones conceptuales en algunos términos de uso relativamente frecuente y dificultades en la formación de conceptos, situación a ser atendida por sus implicaciones en el aprendizaje exitoso a partir de los textos.
Resumo:
En este trabajo se comunican los resultados preliminares de una investigación más amplia sobre desempeño y autopercepción en lectura y escritura de alumnos universitarios. Se trata en este caso de los resultados en comprensión verbal, dadas las relaciones que guarda con la comprensión lectora. Esta última constituye un aspecto crítico, particularmente en la construcción del modelo de situación , que se logra vía integración de la información proporcionada por el texto con el conocimiento previo relevante. Para su estudio se seleccionó una muestra piloto aleatoria de 60 alumnos de tercer año, de ambos sexos, de 23 años de edad promedio, a los que se les aplicó colectivamente las pruebas Vocabulario, Información y Analogías del WAIS III. Los resultados en el Índice de Comprensión Verbal muestran medidas de tendencia central semejantes a los de la muestra de tipificación y una dispersión menor, con casos particulares con puntuaciones en el límite inferior del promedio. Se hacen observaciones respecto del desempeño en población universitaria y sobre algunas particularidades acerca del tipo de errores en las respuestas proporcionadas, que merecen consideraciones adicionales. En principio indican ausencia e insuficiencia de información, confusiones conceptuales en algunos términos de uso relativamente frecuente y dificultades en la formación de conceptos, situación a ser atendida por sus implicaciones en el aprendizaje exitoso a partir de los textos
Resumo:
En este trabajo se comunican los resultados preliminares de una investigación más amplia sobre desempeño y autopercepción en lectura y escritura de alumnos universitarios. Se trata en este caso de los resultados en comprensión verbal, dadas las relaciones que guarda con la comprensión lectora. Esta última constituye un aspecto crítico, particularmente en la construcción del modelo de situación , que se logra vía integración de la información proporcionada por el texto con el conocimiento previo relevante. Para su estudio se seleccionó una muestra piloto aleatoria de 60 alumnos de tercer año, de ambos sexos, de 23 años de edad promedio, a los que se les aplicó colectivamente las pruebas Vocabulario, Información y Analogías del WAIS III. Los resultados en el Índice de Comprensión Verbal muestran medidas de tendencia central semejantes a los de la muestra de tipificación y una dispersión menor, con casos particulares con puntuaciones en el límite inferior del promedio. Se hacen observaciones respecto del desempeño en población universitaria y sobre algunas particularidades acerca del tipo de errores en las respuestas proporcionadas, que merecen consideraciones adicionales. En principio indican ausencia e insuficiencia de información, confusiones conceptuales en algunos términos de uso relativamente frecuente y dificultades en la formación de conceptos, situación a ser atendida por sus implicaciones en el aprendizaje exitoso a partir de los textos.