947 resultados para Bayesian spatial analysis, dengue, socioecological factors


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Purpose: To assess the compliance of Daily Disposable Contact Lenses (DDCLs) wearers with replacing lenses at a manufacturer-recommended replacement frequency. To evaluate the ability of two different Health Behavioural Theories (HBT), The Health Belief Model (HBM) and The Theory of Planned Behaviour (TPB), in predicting compliance. Method: A multi-centre survey was conducted using a questionnaire completed anonymously by contact lens wearers during the purchase of DDCLs. Results: Three hundred and fifty-four questionnaires were returned. The survey comprised 58.5% females and 41.5% males (mean age 34. ±. 12. years). Twenty-three percent of respondents were non-compliant with manufacturer-recommended replacement frequency (re-using DDCLs at least once). The main reason for re-using DDCLs was "to save money" (35%). Predictions of compliance behaviour (past behaviour or future intentions) on the basis of the two HBT was investigated through logistic regression analysis: both TPB factors (subjective norms and perceived behavioural control) were significant (p. <. 0.01); HBM was less predictive with only the severity (past behaviour and future intentions) and perceived benefit (only for past behaviour) as significant factors (p. <. 0.05). Conclusions: Non-compliance with DDCLs replacement is widespread, affecting 1 out of 4 Italian wearers. Results from the TPB model show that the involvement of persons socially close to the wearers (subjective norms) and the improvement of the procedure of behavioural control of daily replacement (behavioural control) are of paramount importance in improving compliance. With reference to the HBM, it is important to warn DDCLs wearers of the severity of a contact-lens-related eye infection, and to underline the possibility of its prevention.

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Cette étude visait à documenter les perceptions et les croyances sur l’hygiène des mains chez des infirmières de deux hôpitaux de la République démocratique du Congo (RDC). Le modèle PRECEDE-PROCEED a guidé les travaux et permis de centrer l’analyse sur les facteurs prédisposants et les facteurs facilitants, éléments favorisant l’adoption des comportements de santé. Le devis utilisé est de type descriptif corrélationnel. Un échantillon de convenance incluant 74 infirmières recrutées dans les deux hôpitaux a été assemblé. Les données ont été recueillies au moyen d’un questionnaire auto-administré composé de 34 questions, tirées d’outils repérés dans la recension des écrits. Les questions portaient sur les connaissances, les perceptions au regard de l’hygiène des mains et l’accès aux infrastructures facilitant l’adoption de ce comportement. La collecte des données s’est déroulée à Kinshasa, capitale de la RDC. Les résultats révèlent d’importantes lacunes dans les connaissances. Les perceptions relatives aux normes sociales sont ressorties comme davantage favorables. Les résultats révèlent également des lacunes en ce qui a trait aux facteurs facilitants, notamment dans l’utilisation de la friction hydro-alcoolique. Par ailleurs, les infirmières les plus instruites et les plus expérimentées étaient plus nombreuses à percevoir l'importance de la pratique d’hygiène des mains. La discussion aborde quelques pistes en termes d’actions à entreprendre pour améliorer les comportements d’hygiène chez les infirmières dans les pays en développement telle la RDC.

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Genetic evidence has implicated several genes as being critical for heart development. However, the inducers of these genes as well as their targets and pathways they are involved with, remain largely unknown. Previous studies in the avian embryo showed that at HH4 Cerberus (cCer) transcripts are detected in the anterior endomesoderm including the heart precursor cells and later in the left lateral plate mesoderm. We have identified a promoter element of chick cCer able to drive EGFP expression in a population of cells that consistently exit from the anterior primitive streak region, from as early as stage HH3+, and that later will populate the heart. Using this promoter element as a tool allowed us to identify novel genes previously not known to potentially play a role in heart development. In order to identify and study genes expressed and involved in the correct development and differentiation of the vertebrate heart precursor cell (HPC) lineages, a differential screening using Affymetrix GeneChip system technologies was performed. Remarkably, this screening led to the identification of more than 700 transcripts differentially expressed in the heart forming regions (HFR). Bioinformatic tools allowed us to filter the large amount of data generated from this approach and to select a few transcripts for in vivo validation. Whole-mount in situ hybridization and sectioning of selected genes showed heart and vascular expression patterns for these transcripts during early chick development. We have developed an effective strategy to specifically identify genes that are differentially expressed in the HPC lineages. Within this set we have identified several genes that are expressed in the heart, blood and vascular lineages, which are likely to play a role in their development. These genes are potential candidates for future functional studies on early embryonic patterning.

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El objetivo de esta investigación se centra en el análisis de los factores que inciden con mayor frecuencia en el fracaso de los emprendimientos en Colombia, y considerar su proximidad con el concepto de logística como actividad elemental para el desarrollo de los emprendimientos en el país. La finalidad de esta investigación es mostrar que los patrones que conducen al fracaso, los cuales están catalogados dentro de las categorías financiera, organizacional, operativa, de entorno, de mercadeo o de recursos humanos, tienen un nivel de incidencia dentro del fracaso, por lo cual, se puede ejecutar un análisis que permita demostrar el orden de las seis categorías mencionadas según su impacto dentro del fracaso y a su vez, brindar estrategias que permitan reducir las posibilidades de fracasar en los emprendimientos.

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The changing role of agriculture is at the core of transition pathways in many rural areas. Productivism, post-productivism and multifunctionality have been targeted towards a possible conceptualization of the transition happening in rural areas. The factors of change, including productivist and post-productivist trends, are combined in various ways and have gone in quite diverse directions and intensities, in individual regions and localities. Even, in the same holding, productivist and post-productivist strategies can co-exist spatially, temporally, structurally, leading to a higher complexity in changing patterns. In south Portugal extensive landscapes, dominated by traditionally managed agro-forestry systems under a fuzzy land use pattern, multifunctionality at the farm level is indeed conducted by different stakeholders whose interests may or not converge: a multifunctional land management may indeed incorporate post-productivist and productivist agents. These stakeholders act under different levels of ownership, management and use, reflecting a particular land management dynamic, in which different interests may exist, from commercial production to a variety of other functions (hunting, bee-keeping, subsistence farming, etc.), influencing management at the farm level and its supposed transition trajectory. This multistakeholder dynamic is composed by the main land-manager (the one who takes the main decisions), sub land-managers (land-managers under the rules of the main land-manager), workers and users (locals or outsiders), whose interest and action within the holding may vary differently according to future (policy, market, etc.) trends, and therefore reflect more or less resilient systems. The goal of the proposed presentation is to describe the multi-stakeholder relations at the farm level, its spatial expression and the factors influencing the land management system resilience in face of the transition trends in place.

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Com esta investigação, pretende-se fazer uma análise comparativa sobre o comprometimento e motivação dos trabalhadores, tendo como fator diferencial a gestão do recrutamento, de modo interno e a gestão por outsourcing. O objetivo principal é verificar se existem diferenças significativas nos dois grupos de trabalhadores, à luz de um quadro teórico muito vasto. Para concretizar esta análise foi elaborado um questionário on-line, com questões de escala manifestadas por afirmações elaboradas, com base no enquadramento teórico que constituiu a revisão da literatura, sobre motivação e comprometimento. Os resultados demonstraram que não existem diferenças significativas nos valores médios dos dois grupos na avaliação dos fatores de motivação, embora em ambos os grupos, se verifique uma grande vontade de darem mais de si à organização, de forma a superarem objetivos. Os valores de motivação revelaram-se muito baixos no geral, nos dois grupos. Em ambos os grupos apurou-se que há mais insatisfação face a fatores recompensatórios (tanto a nível material como imaterial): o salário e o reconhecimento do trabalho. Em relação ao comprometimento, verifica-se menor comprometimento por parte dos trabalhadores outsourcing, não numa análise de comparabilidade de médias gerais, mas numa análise de médias mais específicas de alguns fatores em avaliação: intenções de abandono. As médias das intenções de abandono foram mais visíveis neste grupo. No geral, ambos os trabalhadores dos dois grupos são movidos por um comprometimento instrumental, mais relacionado com as poucas alternativas que o mercado de trabalho dispõe , para uma evolução profissional; Abstract: The influence of human resource management structure in the motivation and commitment of employees: internal management versus outsourcing With this research aims to make a comparative analysis on the commitment and motivation of workers, with the differentiating factor the management of the internal mode recruitment and management by outsourcing. The main objective is to verify whether there are significant differences in the two groups of workers in the light of a very broad theoretical framework. To realize this analysis was prepared an online questionnaire with scale issues raised by elaborate statements, based on the theoretical framework that was the literature review of motivation and commitment. The results showed no significant differences in mean values of the two groups in the evaluation of the motivating factors, although in both groups, that there is a great desire to give more of themselves to the organization in order to overcome objectives. The motivation values proved to be very low in general, in both groups. In both groups it was found that there is more dissatisfaction with the recompensatórios factors (both material and immaterial level): wages and recognition of the work. Regarding the commitment, there is less commitment by the outsourcing workers, not an analysis of comparability of overall averages but a more average specific analysis of some factors reviewed abandonment of intentions. The average dropout intentions were more visible in this group. Overall, both employees of the two groups are driven by an instrumental commitment, more related to the few alternatives that the labor market has for professional development.

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Este trabajo evalúa el contendido y la variabilidad espacial de mercurio en suelos agrícolas de Islas Baleares y Canarias utilizando técnicas integradas en los sistemas de información geográfica. El propósito de este estudio ha sido valorar el contenido y distribución del mercurio en el suelo y distinguir la contribución considerada como natural, y procedente del aporte de la roca de origen, de la inducida por actividades humanas, considerada como contaminante. El SIG se muestra comouna tecnología capaz de localizar fuentes de contaminación y proporcionar el alcance de éstos. Los mapas generados con la relación de Hg_suelo/Hg_roca han permitido cuantificar las entradas de este metal en el suelo y evaluar el enriquecimiento de mercurio en el mismo. Valores excesivamente elevados encontrados en un área de la Isla de Mallorca son atribuibles a las emisiones de una planta eléctrica de carbón cercana.PALABRAS CLAVE: Análisis espacial, SIG, geostadística, mercurio, contaminación de suelos.ABSTRACTThis study assesses Hg concentration and the spatial variability of mercury in agricultural soils of the Balearic and Canary Islands using integrated techniques of geographic information systems. The purpose of this study was to characterize in quantitative terms the mercury concentrations and to distinguish “natural” mercury contribution from that of human-induced contamination. GIS is shown to be technologically capable of locating sources of pollution and assessing their scope. The top soil/rock mercury content maps showed a high level of mercury in the same areas. Excessively high Hg values found in an area of the island of Mallorca are attributable to emissions from a coalfired power plant nearby.KEYWORDS: Spatial analysis, GIS, geostatistic, mercury, soil contamination

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La danta centroamericana (Tapirus bairdii) es el mamífero terrestre de mayor tamaño en el Neotrópico. Es un importante dispersor de semillas que contribuye al enriquecimiento de especies en los bosques donde habita. Varios estudios ecológicos han permitido conocer esta especie discreta; sin embargo, su distribución y el tamaño de sus poblaciones permanece sensiblemente desconocido fuera de las áreas silvestres protegidas. El propósito de esta investigación consistió en proponer una metodología de análisis geo-espacial sencilla que permitiera realizar una evaluación rápida del hábitat potencial para la danta centroamericana. Se seleccionaron siete variables de la ecología de la danta centroamericana, las cuales fueron evaluadas en el Corredor Biológico San Juan-La Selva, mediante un sistema de información geográfica (SIG). Estimamos la población de dantas con un rango de 69 a 208 individuos. Esto es una manera barata de determinar la viabilidad del hábitat de la danta cuando existe información confiable sobre los procesos dinámicos de los ecosistemas presentes en el área del estudio.Palabras clave: Tapiridae, danta centroamericana, Tapirus bairdii, evaluación de hábitat, analisis geo-espacial, Corredor Biológico San Juan-La Selva, Costa RicaAbstract: Baird’s Tapir (Tapirus bairdii) is the largest terrestrial mammal in the Neotropics. It is an important seed disperser that contributes to the enrichment of species in the forests where it lives. Several ecological studies on this species have generated knowledge about this discreet species; nevertheless, its distribution and the size of its populations outside protected wildlife areas sensibly remain unknown. The purpose of this investigation consisted in proposing a simple methodology of geo-space analysis that allowed realizing a fast evaluation of the potential habitat for Baird’s Tapir. Seven variables of the ecology of Baird’s Tapir were selected, which were evaluated in the San Juan-La Selva Biological Corridor, using a geographical information system (GIS) program. We estimated the tapir population to range from 69 to 208 individuals. This is an inexpensive way to assess Tapir’s habitat viability when there is a strong knowledge about the dynamic processes from the ecosystems present in the study area.Key Words: Tapiridae, Baird’s Tapir, Tapirus bairdii, habitat viability assessment, geo-spatial analysis, San Juan-La Selva Biological Corridor, Costa Rica

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En este artículo se pretende rescatar el análisis de redes independientemente del enfoque aureolar, destacando sus virtudes en un mundo globalizado, en donde cada vez más el concepto de distancia es sustituido por de tiempo, hasta llegar al extremo de que el costo, de algunos productos o la información, ya no depende de la distancia como el caso de las tarifas planas de Internet. Se aborda un enfoque teórico metodológico que cuestiona  el  análisis  regional,  debido  a  que,  éste  enfoque  en  algunos  aspectos  ya  no puede  resolver  los  problemas  que  la  sociedad  actual  demanda.   En  el  espacio  red,la noción de  localización absoluta pierde vigencia, mientras se refuerza  la  importancia de la  conexión  a  las  redes. Las metodologías  propuestas,  podrían mejorar  la  ejecución  y operación  de  las  redes    presentes  en  los planes  de  ordenamiento  del  territorio,  tan  en boga, en nuestro país. Abstract:In  this article  it  is  tried  to rescue  the analysis of networks  independently of the approach  to  aureole, emphasizing  its  virtues  in a globalized world,  in where more and more the distance concept is replaced by the time, until arriving at the end of which the cost, no  longer depends on  the distance as  the case of  the  flat  tariffs of Internet. A theoretical/ methodological approach  that questions  the regional analysis, because,  this one approach  in some aspects no longer can solve the problems that the present society demand.  In  the  space  network,  the  notion  of  absolute  location  loses  use  while  the importance  of  the  connection  to  the  networks  is  reinforced.  The  proposed methodologies  could  improve  the  boarding  of  the  present  networks  in  the  regulating plans, so in rows, our country.

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El artículo hace referencia a un encuadre teórico desde la geografía cultural, a partir de una sistematización de fuentes bibliográficas seleccionadas, para explicar el análisis espacial a escala local integrando la variable “identidad territorial”. Con tal propósito se elaboró un instrumento que permite identificar dónde es posible señalar rasgos de identidad territorial en la población de Cabuya, con el fin de que la información recopilada sea utilizada como insumo de intervención, en el proceso de participación ciudadana en los talleres que realiza la Universidad Nacional (UNA) para elaborar un plan estratégico en dicha comunidad. ABSTRACT The article refers to a theoretical framework from cultural geography, referring to a bibliographical system of selected sources that explain the spatial analysis to local scale integrating the variable “territorial identity”. With this in mind, we developed a tool to identify, where possible, features of territorial identity in the population of Cabuya so that the compiled information could be used as an input of intervention in the process of citizen participation in workshops conducted by Universidad Nacional to develop a strategic plan for the community of Cabuya.

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This dissertation has two main themes: first, the economic impact of tourism on cities and, secondly, the determinants of European long-run development, with a focus on the pre-Industrial era. The common thread is the attempt to develop economic geography models that incorporate spatial frictions and are liable to be given empirical content. Chapter 1, written in conjunction with G. Alfredo Minerva, provides an empirical analysis of the relationship between tourism and economic activity across Italian municipalities, and lays down the basic elements of an urban theory of tourism in an a-spatial setting. Chapter 2 extends these ideas to a quantitative urban framework to study the economic impact and the welfare consequences of tourism into the city of Venice. The model is given empirical content thanks to a large collection of data at the Census tract level for the Municipality of Venice, and then used to perform counterfactual policty analysis. In chapter 3, with Matteo Santacesaria, we consider a setting where agents are continuously distributed over a two-dimensional heterogeneous geography, and are allowed to do business at a finite set of markets. We study the equilibrium partition of the economic space into a collection of mutually-exclusive market areas, and provide condition for this equilibrium partition to exist and to be unique. Finally, chapter 4 "The rise of (urban) Europe: a Quantitative-Spatial analysis", co-authored with Matteo Cervellati and Alex Lehner, sets up a quantitative economic geography model to understand the roots of the Industrial Revolution, in an attempt to match the evolution of the European urban network, and the corresponding city-size distribution, over the period A.D. 1000-1850. It highlights the importance of agricultural trade across cities for the emergence of large manufacturing hubs.

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Smart Farming Technologies (SFT) is a term used to define the set of digital technologies able not only to control and manage the farm system, but also to connect it to the many disruptive digital applications posed at multiple links along the value chain. The adoption of SFT has been so far limited, with significant differences at country-levels and among different types of farms and farmers. The objective of this thesis is to analyze what factors contributes to shape the agricultural digital transition and to assess its potential impacts in the Italian agri-food system. Specifically, this overall research objective is approached under three different perspectives. Firstly, we carry out a review of the literature that focuses on the determinants of adoption of farm-level Management Information Systems (MIS), namely the most adopted smart farming solutions in Italy. Secondly, we run an empirical analysis on what factors are currently shaping the adoption of SFT in Italy. In doing so, we focus on the multi-process and multi-faceted aspects of the adoption, by overcoming the one-off binary approach often used to study adoption decisions. Finally, we adopt a forward-looking perspective to investigate what the socio-ethical implications of a diffused use of SFT might be. On the one hand, our results indicate that bigger, more structured farms with higher levels of commercial integration along the agri-food supply chain are those more likely to be early adopters. On the other hand, they highlight the need for the institutional and organizational environment around farms to more effectively support farmers in the digital transition. Moreover, the role of several other actors and actions are discussed and analyzed, by highlighting the key role of specific agri-food stakeholders and ad-hoc policies, with the aim to propose a clearer path towards an efficient, fair and inclusive digitalization of the agrifood sector.

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I miomi uterini sono la neoplasia uterina più comune e colpiscono fino al 30% delle donne in età fertile. Nonostante l’elevata prevalenza, pochi studi in Letteratura hanno analizzato i fattori di rischio per la crescita dei miomi uterini, mostrando spesso dei risultati contrastanti. Nel nostro studio osservazionale prospettico sono state arruolate pazienti che rispettassero i criteri di inclusione e di esclusione, con diagnosi di miomi uterini evidenziati mediante ecografia eseguita presso i nostri ambulatori, a partire da giugno 2017. A partire da gennaio 2019, sono state ricercate mensilmente le pazienti precedentemente arruolate che erano tornate presso i nostri ambulatori per esecuzione di ulteriore ecografia, a distanza di 24 ± 5 mesi, fino a raggiungere il campione designato, cioè 450 pazienti totali. È stato, quindi, valutato il tasso di crescita annuo del mioma di maggiori dimensioni ed è stato utilizzato l'approccio polinomiale frazionario multivariabile per selezionare i fattori di rischio anamnestici ed ecografici legati all’incremento volumetrico. Circa la metà dei miomi uterini analizzati ha mostrato stabilità dimensionale nel corso del follow-up (crescita ≤10%), mentre la restante metà ha mostrato una crescita > 10%. Il solo fattore di rischio associato alla crescita volumetrica dei miomi uterini è risultato essere il volume del mioma durante l’ecografia di arruolamento (P = 0.001), quindi miomi di piccole dimensioni presentano un tasso di crescita maggiore rispetto ai miomi di grandi dimensioni. Lo studio ha raccolto la più ampia casistica in Letteratura nella valutazione del naturale andamento di modifica dimensionale dei miomi uterini. Sebbene siano necessari ulteriori studi con campione più ampio, questi dati possono fornire un utile supporto per eseguire un adeguato counselling con le pazienti nella pratica clinica quotidiana.

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Elephant poaching and the ivory trade remain high on the agenda at meetings of the Convention on International Trade in Endangered Species of Wild Fauna and Flora (CITES). Well-informed debates require robust estimates of trends, the spatial distribution of poaching, and drivers of poaching. We present an analysis of trends and drivers of an indicator of elephant poaching of all elephant species. The site-based monitoring system known as Monitoring the Illegal Killing of Elephants (MIKE), set up by the 10th Conference of the Parties of CITES in 1997, produces carcass encounter data reported mainly by anti-poaching patrols. Data analyzed were site by year totals of 6,337 carcasses from 66 sites in Africa and Asia from 2002–2009. Analysis of these observational data is a serious challenge to traditional statistical methods because of the opportunistic and non-random nature of patrols, and the heterogeneity across sites. Adopting a Bayesian hierarchical modeling approach, we used the proportion of carcasses that were illegally killed (PIKE) as a poaching index, to estimate the trend and the effects of site- and country-level factors associated with poaching. Important drivers of illegal killing that emerged at country level were poor governance and low levels of human development, and at site level, forest cover and area of the site in regions where human population density is low. After a drop from 2002, PIKE remained fairly constant from 2003 until 2006, after which it increased until 2008. The results for 2009 indicate a decline. Sites with PIKE ranging from the lowest to the highest were identified. The results of the analysis provide a sound information base for scientific evidence-based decision making in the CITES process.

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INTRODUCTION: The purpose of this ecological study was to evaluate the urban spatial and temporal distribution of tuberculosis (TB) in Ribeirão Preto, State of São Paulo, southeast Brazil, between 2006 and 2009 and to evaluate its relationship with factors of social vulnerability such as income and education level. METHODS: We evaluated data from TBWeb, an electronic notification system for TB cases. Measures of social vulnerability were obtained from the SEADE Foundation, and information about the number of inhabitants, education and income of the households were obtained from Brazilian Institute of Geography and Statistics. Statistical analyses were conducted by a Bayesian regression model assuming a Poisson distribution for the observed new cases of TB in each area. A conditional autoregressive structure was used for the spatial covariance structure. RESULTS: The Bayesian model confirmed the spatial heterogeneity of TB distribution in Ribeirão Preto, identifying areas with elevated risk and the effects of social vulnerability on the disease. We demonstrated that the rate of TB was correlated with the measures of income, education and social vulnerability. However, we observed areas with low vulnerability and high education and income, but with high estimated TB rates. CONCLUSIONS: The study identified areas with different risks for TB, given that the public health system deals with the characteristics of each region individually and prioritizes those that present a higher propensity to risk of TB. Complex relationships may exist between TB incidence and a wide range of environmental and intrinsic factors, which need to be studied in future research.