906 resultados para social ecological model


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Los modelos ecológicos se han convertido en una pieza clave de esta ciencia. La generación de conocimiento se consigue en buena medida mediante procesos analíticos más o menos complejos aplicados sobre conjuntos de datos diversos. Pero buena parte del conocimiento necesario para diseñar e implementar esos modelos no está accesible a la comunidad científica. Proponemos la creación de herramientas informáticas para documentar, almacenar y ejecutar modelos ecológicos y flujos de trabajo. Estas herramientas (repositorios de modelos) están siendo desarrolladas por otras disciplinas como la biología molecular o las ciencias de la Tierra. Presentamos un repositorio de modelos (ModeleR) desarrollado en el contexto del Observatorio de seguimiento del cambio global de Sierra Nevada (Granada-Almería). Creemos que los repositorios de modelos fomentarán la cooperación entre científicos, mejorando la creación de conocimiento relevante que podría ser transferido a los tomadores de decisiones.

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La Ley General de Sanidad 14/1986 de 25 de Abril posibilitó el tránsito del antiguo modelo de Seguridad Social al actual modelo de Sistema Nacional de Salud (SNS), financiado con impuestos y de cobertura prácticamente universal. Desde entonces se han producido profundos cambios en el sistema que culminaron en el año 2002 con la descentralización total de competencias en materia de salud en las Comunidades Autónomas. La regulación nacional de competencias en materia de salud se realiza desde el Consejo Interterritorial del Sistema Nacional de Salud, organismo que agrupa a los máximos responsables autonómicos en materia de salud de cada Comunidad Autónoma y que tiene entre otras, la responsabilidad de evitar las desigualdades en servicios sanitarios dentro del territorio nacional. La creación y competencias del Consejo Interterritorial quedan recogidas en la Ley 16/2003 de 28 de mayo de Cohesión de la calidad del Sistema Nacional de Salud. La cartera de servicios comunes del SNS se establece en el Real Decreto 1030/2006 de 15 de Septiembre, actualizando el Real Decreto 63/1995 de 20 de enero sobre Ordenación de las prestaciones sanitarias, resultando del actual marco legislativo con la descentralización de competencias y gestión de los presupuestos un horizonte de posible variabilidad en los modelos de gestión de cada CCAA, que, si bien deben garantizar la universalidad de las prestaciones, también ofrece una diversidad de modalidades de gestionar los recursos en materia de salud. En cuanto al estado de salud de los españoles, destacar que la esperanza de vida al nacer se sitúa en 79,9 años, superior a la media europea, 78,3 años, y la esperanza de vida ajustada por incapacidad fue en 2002 de 72,6 años en España respecto a los 70,8 de la UE. Según cifras del propio Ministerio de Sanidad, la percepción de la salud de los ciudadanos fue positiva para un 73% de los hombres y un 63,2 de las mujeres. Alrededor del 60% de la población tiene un peso normal y la morbilidad sitúa en los primeros lugares las enfermedades del aparato circulatorio, el cáncer y las enfermedades del aparato respiratorio (CIE-9). El gasto sanitario en España, es un capítulo presupuestario importante, al situarse en torno al 7,5 del P.I.B, y los recursos e inversiones presentan aparentes desigualdades autonómicas. Los modelos de gestión y dependencia patrimonial de los recursos, variables entre Autonomías, plantean la necesidad de monitorizar un seguimiento que permita evaluar en los próximos diez años el impacto de la descentralización de competencias del Sistema. La estructura del Sistema tiene dos niveles asistenciales mayoritarios, atención primaria y especializada, absorbiendo la atención especializada la mayor parte del presupuesto. El incremento del gasto sanitario y la universalidad de las prestaciones han condicionado en gran medida la implantación de modelos de gestión diferentes a los tradicionales. Esta situación no es exclusiva del Estado Español. En los Estados del entorno de la Unión Europea, el Consejo de Ministros de Sanidad de la UE en su sesión celebrada los días 1 y 2 de Junio de 200625 concluyeron un documento que recoge los valores y principios comunes de los sistemas sanitarios de los países de la Unión Europea, resaltando los principios y valores de los sistemas sanitarios como soporte estructural de dichos estados. Como conclusión, en este momento (2007) el Sistema Nacional de Salud Español, está inmerso en un proceso de trasformación orientado a garantizar la eficiencia de las prestaciones de manera responsable, es decir, ofertar al ciudadano la mejor calidad de servicios al mínimo coste.

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Tese de doutoramento, Alterações Climáticas e Políticas de Desenvolvimento Sustentável (Sociologia), Universidade de Lisboa, Instituto de Ciências Sociais, 2016

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Commonwealth countries share their British social policy legacy in a variety of ways. Autstralia attempted to adopt the postwar new Fabian welfare state model at the very time when international economic circumstances undermined its Keynesian foundation. With Labor governments in power from 1983 to 1996, Australia diverged significantly from the neo-liberal reform path adopted in the United Kingdom. Australian governments looked increasingly to European social democracies for alternative social policy model In a manner anticipating the Third Way. the tendency was towards mixing neo-liberal economics with social democratic welfare. The Australian Third Way which resulted proved unstable. Current social reformers, the paper proposes, ought to revisit a neglected but characteristically British emphasis on the need for a measure of socialization of investment to underpin redistributive strategies.

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Queensland fruit fly, Bactrocera (Dacus) tryoni (QFF) is arguably the most costly horticultural insect pest in Australia. Despite this, no model is available to describe its population dynamics and aid in its management. This paper describes a cohort-based model of the population dynamics of the Queensland fruit fly. The model is primarily driven by weather variables, and so can be used at any location where appropriate meteorological data are available. In the model, the life cycle is divided into a number of discreet stages to allow physiological processes to be defined as accurately as possible. Eggs develop and hatch into larvae, which develop into pupae, which emerge as either teneral females or males. Both females and males can enter reproductive and over-wintering life stages, and there is a trapped male life stage to allow model predictions to be compared with trap catch data. All development rates are temperature-dependent. Daily mortality rates are temperature-dependent, but may also be influenced by moisture, density of larvae in fruit, fruit suitability, and age. Eggs, larvae and pupae all have constant establishment mortalities, causing a defined proportion of individuals to die upon entering that life stage. Transfer from one immature stage to the next is based on physiological age. In the adult life stages, transfer between stages may require additional and/or alternative functions. Maximum fecundity is 1400 eggs per female per day, and maximum daily oviposition rate is 80 eggs/female per day. The actual number of eggs laid by a female on any given day is restricted by temperature, density of larva in fruit, suitability of fruit for oviposition, and female activity. Activity of reproductive females and males, which affects reproduction and trapping, decreases with rainfall. Trapping of reproductive males is determined by activity, temperature and the proportion of males in the active population. Limitations of the model are discussed. Despite these, the model provides a useful agreement with trap catch data, and allows key areas for future research to be identified. These critical gaps in the current state of knowledge exist despite over 50 years of research on this key pest. By explicitly attempting to model the population dynamics of this pest we have clearly identified the research areas that must be addressed before progress can be made in developing the model into an operational tool for the management of Queensland fruit fly. (C) 2003 Published by Elsevier B.V.

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Drugs acting at 5-HT receptors were evaluated on three animal models of anxiety. On the elevated X-maze test the majority of 5-HT1 agonists were found to be anxiogenic. However, ipsapirone was anxiolytic and buspirone and gepirone were inactive. The 5-HT2 agonist DOI and the 5-HT2 antagonist ritanserin were anxiolytic while ICI 169,369, a 5-HT2 antagonist was inactive. All 5-HT3 antagonists tested were inactive in this test, while the indirect serotomimetics zimeldine and fenfluramine were anxiogenic. Neither beta-adrenoceptor agonists nor antagonists had reproducible effects on anxiety in this model. Combined beta-1/beta-2 adrenoceptor antagonists reversed the anxiogenic effects of 8-OH-DPAT while selective beta-1 or beta-2 antagonists did not. On the social interaction model the 5-HT1 agonists 8-OH-DPAT, RU 24969 and 5-MeODMT were anxiogenic and ipsapirone was anxiolytic. The 5-HT2 agonist DOI and the beta-adrenoceptor- and 5-HT- antagonist pindolol were anxiolytic, while the 5-HT2 and 5-HT3 antagonists were inactive. In the marble burying test, the 5-HT upake inhibitors zimeldine, fluvoxamine, indalpine and citalopram, the 5-HT1B/5-HT1C agonists mCPP and TFMPP and the 5-HT2/5-HT1C agonist DOI reduced marble burying without affecting locomotor activity. 5-HT1A agonists and the 5-HT2 and 5-HT3 antagonists were without effect. Lesions of the dorsal raphe nucleus reversed the anxiogenic effects of 8-OH-DPAT in the X-maze model. The implication of these results for the understanding of the pharmacology of 5-HT in anxiety is discussed.

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The research was carried out within a major public company. It sought to implement an approach to strategic planning which accounted for organisational values as well as employing a holistic value-free analysis of the firm and its environment. To this end, an 'ecological' model of the firm was formulated. A series of value-free strategic policies for its development were generated. These policies were validated by the company's top-management.They compared favourably with their own planning outcomes. The approach appeared to be diagnostically strong but lacked sufficient depth in the context of finding realistic corrective measures. However, feedback from the company showed it to be a useful complementary process to conventional procedures, in providing an explicitly different perspective. The research empirically evaluated the company's value-systems and their influence on strategy. It introduced the idea of an organisational 'self-concept' pre-determining the acceptability of various strategies.The values and the "self-concept' of the company were identified and validated, They appeared to have considerable influence on strategy. In addition, tho company's planning process within the decentralised structure was shown to be sub-optimal. This resulted from the variety of value systems maintained by different parts of the organisation. Proposals attempting to redress this situation were ofJered and several accepted. The study was postured as process-action research and the chosen perspective could be succinctly described as a 'worm's-eye view', akin to that of many real planners operating at some distance from the decision-making body. In this way, the normal strategic functionings of the firm and any changes resulting from the researcher's intervention were observed and recorded. Recurrent difficulties of the planning process resulting from the decentralised structure were identified. The overall procedure suggested as a result of the research aimed to increase the viabiIity of planning and the efficiency of the process. It is considered to be flexible enough to be applicable in a broader context.

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Sustainable development is notoriously difficult to grasp for students and professionals. Multidimensional, encompassing social, ecological and economic theories, policies and practice, it can be a maze of complexity and contradiction. This powerful new textbook, by a topic instructor in the field, is the first to unravel sustainable development and provide readers with the deep understanding so often missing in other texts. The book adopts a multi-perspective approach designed specifically to allow access to the topic from a wide range of educational and professional backgrounds and to develop understanding of a diversity of approaches and traditions at different levels. It features multiple entry points, explains jargon and explores controversies. Also offering boxed examples from the local to the global, Understanding Sustainable Development is the most complete guide to the subject for course leaders, students and self-learners.

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Our aim was to approach an important and well-investigable phenomenon – connected to a relatively simple but real field situation – in such a way, that the results of field observations could be directly comparable with the predictions of a simulation model-system which uses a simple mathematical apparatus and to simultaneously gain such a hypothesis-system, which creates the theoretical opportunity for a later experimental series of studies. As a phenomenon of the study, we chose the seasonal coenological changes of aquatic and semiaquatic Heteroptera community. Based on the observed data, we developed such an ecological model-system, which is suitable for generating realistic patterns highly resembling to the observed temporal patterns, and by the help of which predictions can be given to alternative situations of climatic circumstances not experienced before (e.g. climate changes), and furthermore; which can simulate experimental circumstances. The stable coenological state-plane, which was constructed based on the principle of indirect ordination is suitable for unified handling of data series of monitoring and simulation, and also fits for their comparison. On the state-plane, such deviations of empirical and model-generated data can be observed and analysed, which could otherwise remain hidden.

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This dissertation introduced substance abuse to the Dynamic Vulnerability Formulation (DVF) and the social competence model to determine if the relationship between schizophrenic symptomatology and coping ability in the DVF applied also to the dually diagnosed schizophrenic or if these variables needed to be modified. It compared the coping abilities of dually and singly diagnosed clients in day treatment and identified, examined, and assessed the relative influence of relevant mediating variables on two dimensions of coping ability of the dually diagnosed: coping skills and coping effort. These variables were: presence of negative and nonnegative symptoms, duration of mental illness, type of substance used, and age of first substance use.^ A priori effect sizes based on previous empirical research were used to interpret the results related to the comparison of demographic, socioeconomic, and treatment characteristics between the singly and dually diagnosed study samples. The data suggested that the singly diagnosed group had higher coping skills than the dually diagnosed group, particularly in the areas of housing stability, work affect, and total social adjustment. The dually diagnosed group had lower scores on one aspect of coping effort--agency or self-efficacy. The data supported the presence of an inverse relationship between symptom severity and coping skills, particularly for the dually diagnosed group. The data did not support the presence of an inverse relationship between symptom severity and coping effort, but did suggest a positive relationship between symptom severity and one measure of coping effort, agency, for the dually diagnosed group. Regression equations using each summary measure of coping skill--social adjustment and role functioning--yielded statistically significant F-ratios. Thirty-six percent of the variance in social adjustment and thirty-one percent of the variance in role functioning were explained by the relative influence of the relevant variables. Both negative and non-negative symptoms were the only significant predictors of social adjustment. The non-negative symptoms variable was the sole significant predictor of role functioning. The results of this study provided partial support for the use of the Dynamic Vulnerability Formulation (DVF) with the dually diagnosed. ^

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We have developed a comprehensive ecological indicator for invasive exotic plants, a human-influenced component of the Everglades that could threaten the success of the restoration initiative. Following development of a conceptual ecological model for invasive exotic species, presented as a companion paper in this special issue, we developed criteria to evaluate existing invasive exotic monitoring programs for use in developing invasive exotic performance measures. We then used data from the selected monitoring programs to define specific performance measures, using species presence and abundance as the basis of the indicator for invasive exotic plants. We then developed a series of questions used to evaluate region and/or individual species status with respect to invasion. Finally, we used an expert panel who had answered the questions for invasive exotic plants in the Everglades Lake Okeechobee model to develop a stoplight restoration report card to communicate invasive exotic plant status. The report card system provides a way to effectively evaluate and present indicator data to managers, policy makers, and the public using a uniform format among indicators. Collectively, the model, monitoring assessment, performance measures, and report card enable us to evaluate how invasive plants are impacting the restoration program and how effectively that impact is being managed. Applied through time, our approach also allows us to follow the progress of management actions to control the spread and reduce the impacts of invasive species and can be easily applied and adapted to other large-scale ecosystem projects.

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While undergraduate enrollment of all racial groups in United States higher education institutions has increased, 6-year graduation rates of Blacks (39%) remain low compared to other races; Asians (69%), Whites (62%), and Hispanics (50%; NCES, 2010). Women's graduation rate is higher than men's; 58% compared to men's at 53% in public institutions (IPEDS, 2011). Retention literature does not address the perceptions of Black ethnic groups' experiences in college, particularly in Hispanic serving institutions. Informed by Tinto's (1975, 1987, 1993) student academic and social integration model, Guiffrida's (2003, 2004, 2005, 2006) model of relationships while at college, and ex-post facto research design, the study investigated personal and institutional factors that relate to Black students' self-efficacy and persistence to the senior year in college. Data about Black ethnic undergraduate seniors' (N = 236) academic and social experiences in college were collected using the Student Institutional Integration Survey (SIIS), an online questionnaire. Descriptive statistics were used to collect background information about the sample, correlation was calculated to indicate the degree of relationship between the variables, and multiple linear regressions were used to identify variables that are predictors of self-efficacy of persistence. Independent samples t-test and analyses of variance were computed to determine whether differences in perceptions of personal and institutional factors that relate to self-efficacy of persistence to the senior year in college could be identified between gender and ethnicity. Frequency was summarized to identify themes of participants' primary motivation for finishing undergraduate degree programs. These themes were: (a) self-pride/personal goal, (b) professional aspiration/career (c) motivation to support family, (d) desire to have financial independence/better job, (e) to serve community, (f) opportunity to go to college, (g) being first-generation college student, and (h) prove to family the value of higher education. The research findings support the tenets of academic and social integration theories which suggest that students' interaction with peer and faculty, relationships with family and friends, and involvement in institutional activities and organizations influence their persistence in college. Implications based on the findings affect institutional policy, curriculum, and program improvements that relate to Black undergraduate students' academic and social support.

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While undergraduate enrollment of all racial groups in United States higher education institutions has increased, 6-year graduation rates of Blacks (39%) remain low compared to other races; Asians (69%), Whites (62%), and Hispanics (50%; NCES, 2010). Women’s graduation rate is higher than men’s; 58% compared to men’s at 53% in public institutions (IPEDS, 2011). Retention literature does not address the perceptions of Black ethnic groups’ experiences in college, particularly in Hispanic serving institutions. Informed by Tinto’s (1975, 1987, 1993) student academic and social integration model, Guiffrida’s (2003, 2004, 2005, 2006) model of relationships while at college, and ex-post facto research design, the study investigated personal and institutional factors that relate to Black students’ self-efficacy and persistence to the senior year in college. Data about Black ethnic undergraduate seniors’ (N = 236) academic and social experiences in college were collected using the Student Institutional Integration Survey (SIIS), an online questionnaire. Descriptive statistics were used to collect background information about the sample, correlation was calculated to indicate the degree of relationship between the variables, and multiple linear regressions were used to identify variables that are predictors of self-efficacy of persistence. Independent samples t-test and analyses of variance were computed to determine whether differences in perceptions of personal and institutional factors that relate to self-efficacy of persistence to the senior year in college could be identified between gender and ethnicity. Frequency was summarized to identify themes of participants’ primary motivation for finishing undergraduate degree programs. These themes were: (a) self-pride/personal goal, (b) professional aspiration/career (c) motivation to support family, (d) desire to have financial independence/better job, (e) to serve community, (f) opportunity to go to college, (g) being first-generation college student, and (h) prove to family the value of higher education. The research findings support the tenets of academic and social integration theories which suggest that students’ interaction with peer and faculty, relationships with family and friends, and involvement in institutional activities and organizations influence their persistence in college. Implications based on the findings affect institutional policy, curriculum, and program improvements that relate to Black undergraduate students’ academic and social support.

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Background Diabetes has reached epidemic proportions in the United States, particularly among minorities, and if improperly managed can lead to medical complications and death. Healthcare providers play vital roles in communicating standards of care, which include guidance on diabetes self-management. The background of the client may play a role in the patient-provider communication process. The aim of this study was to determine the association between medical advice and diabetes self care management behaviors for a nationally representative sample of adults with diabetes. Moreover, we sought to establish whether or not race/ethnicity was a modifier for reported medical advice received and diabetes self-management behaviors. Methods We analyzed data from 654 adults aged 21 years and over with diagnosed diabetes [130 Mexican-Americans; 224 Black non-Hispanics; and, 300 White non-Hispanics] and an additional 161 with 'undiagnosed diabetes' [N = 815(171 MA, 281 BNH and 364 WNH)] who participated in the National Health and Nutrition Examination Survey (NHANES) 2007-2008. Logistic regression models were used to evaluate whether medical advice to engage in particular self-management behaviors (reduce fat or calories, increase physical activity or exercise, and control or lose weight) predicted actually engaging in the particular behavior and whether the impact of medical advice on engaging in the behavior differed by race/ethnicity. Additional analyses examined whether these relationships were maintained when other factors potentially related to engaging in diabetes self management such as participants' diabetes education, sociodemographics and physical characteristics were controlled. Sample weights were used to account for the complex sample design. Results Although medical advice to the patient is considered a standard of care for diabetes, approximately one-third of the sample reported not receiving dietary, weight management, or physical activity self-management advice. Participants who reported being given medical advice for each specific diabetes self-management behaviors were 4-8 times more likely to report performing the corresponding behaviors, independent of race. These results supported the ecological model with certain caveats. Conclusions Providing standard medical advice appears to lead to diabetes self-management behaviors as reported by adults across the United States. Moreover, it does not appear that race/ethnicity influenced reporting performance of the standard diabetes self-management behavior. Longitudinal studies evaluating patient-provider communication, medical advice and diabetes self-management behaviors are needed to clarify our findings.

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Background: Diabetes has reached epidemic proportions in the United States, particularly among minorities, and if improperly managed can lead to medical complications and death. Healthcare providers play vital roles in communicating standards of care, which include guidance on diabetes self-management. The background of the client may play a role in the patient-provider communication process. The aim of this study was to determine the association between medical advice and diabetes self care management behaviors for a nationally representative sample of adults with diabetes. Moreover, we sought to establish whether or not race/ethnicity was a modifier for reported medical advice received and diabetes self-management behaviors. Methods: We analyzed data from 654 adults aged 21 years and over with diagnosed diabetes [130 MexicanAmericans; 224 Black non-Hispanics; and, 300 White non-Hispanics] and an additional 161 with ‘undiagnosed diabetes’ [N = 815(171 MA, 281 BNH and 364 WNH)] who participated in the National Health and Nutrition Examination Survey (NHANES) 2007-2008. Logistic regression models were used to evaluate whether medical advice to engage in particular self-management behaviors (reduce fat or calories, increase physical activity or exercise, and control or lose weight) predicted actually engaging in the particular behavior and whether the impact of medical advice on engaging in the behavior differed by race/ethnicity. Additional analyses examined whether these relationships were maintained when other factors potentially related to engaging in diabetes self management such as participants’ diabetes education, sociodemographics and physical characteristics were controlled. Sample weights were used to account for the complex sample design. Results: Although medical advice to the patient is considered a standard of care for diabetes, approximately onethird of the sample reported not receiving dietary, weight management, or physical activity self-management advice. Participants who reported being given medical advice for each specific diabetes self-management behaviors were 4-8 times more likely to report performing the corresponding behaviors, independent of race. These results supported the ecological model with certain caveats. Conclusions: Providing standard medical advice appears to lead to diabetes self-management behaviors as reported by adults across the United States. Moreover, it does not appear that race/ethnicity influenced reporting performance of the standard diabetes self-management behavior. Longitudinal studies evaluating patient-provider communication, medical advice and diabetes self-management behaviors are needed to clarify our findings.