WorldWideScience

Sample records for carlos municipio insular

  1. Prevalencia de maloclusiones en niños de la escuela Carlos Cuquejo del municipio Puerto Padre, Las Tunas

    OpenAIRE

    Haideé Tamara Díaz Méndez; Bernardo Ochoa Fernández; Lisett Paz Quiñones; Kenya Casanova Sales; Yudenia Coca García

    2015-01-01

    Fundamento: en el examen estomatológico correspondiente, realizado a los niños de primero a sexto grado de la escuela primaria Carlos Cuquejo, fue detectado un alto número de niños con maloclusiones de diferentes tipos. Objetivo: describir la prevalencia de las maloclusiones en escolares de 5 a 11 años de edad. Métodos: se realizó un estudio descriptivo, transversal, en el periodo comprendido desde septiembre 2011 a marzo 2012, con todos los escolares que presentaron maloclusión, pertenecient...

  2. Significados en torno a la reparación, la ayuda humanitaria, la indemnización y la restitución en víctimas del conflicto armado en el municipio de San Carlos

    OpenAIRE

    Juan David Villa Gómez; Alfonso Insuasty Rodríguez

    2015-01-01

    Se presentan los primeros resultados de las indagaciones sobre la valoración que las mismas víctimas del conflicto armado, del municipio de San Carlos Antioquia (Colombia), hacen de la implementación de la Ley 1448 (Ley de Victimas); dicho proceso de investigación, en esta primera entrega, evidenció entre otros hallazgos, la contradicción entre el discurso oficial y el relato de las víctimas en relación a los procesos de reparación, discursos contradictorios respecto a la transición, el estad...

  3. Significados en torno a la indemnización y la restitución en víctimas del conflicto armado en el municipio de San Carlos

    Directory of Open Access Journals (Sweden)

    Villa Gómez, Juan David

    2016-02-01

    Full Text Available Resumen. Se resultados de las indagaciones sobre la valoración que las mismas víctimas del conflicto armado, del municipio de San Carlos Antioquia (Colombia, hacen de la implementación de la Ley 1448 (Ley de Victimas; dicho proceso de investigación, evidenció entre otros hallazgos, la contradicción entre el discurso oficial y el relato de las víctimas en relación a los procesos de reparación, discursos contradictorios respecto a la transición, el estado de vulneración e insatisfacción de necesidades básicas de las personas victimizadas así como una alta confusión en la implementación de la Ley. Estos resultados, entre otros, permiten afirmar que, la reparación hoy, dista mucho de ser un proceso que aporte a la reconstrucción del tejido social, a la paz y la reconciliación. Abstract. The results of the inquiries on the valuation that the very victims make of the armed conflict, in the Municipality of San Carlos, Antioquia, Colombia of the implementation of the 1448 Law (Law of victims; such a process of research, made evident among other findings, the contradiction between the official discourse and the story of the victims in relation to the processes of repair, contradictory speeches regarding the transition, the state of infringement and dissatisfaction of victimized people’s basic needs, as well as a high confusion in the implementation of the Law. These findings, among others, allow to affirm that, repair today, is very far from being a process that contributes to the reconstruction of the social fabric, to peace, and reconciliation.

  4. Significados en torno a la reparación, la ayuda humanitaria, la indemnización y la restitución en víctimas del conflicto armado en el municipio de San Carlos

    Directory of Open Access Journals (Sweden)

    Juan David Villa Gómez

    2015-08-01

    Full Text Available Se presentan los primeros resultados de las indagaciones sobre la valoración que las mismas víctimas del conflicto armado, del municipio de San Carlos Antioquia (Colombia, hacen de la implementación de la Ley 1448 (Ley de Victimas; dicho proceso de investigación, en esta primera entrega, evidenció entre otros hallazgos, la contradicción entre el discurso oficial y el relato de las víctimas en relación a los procesos de reparación, discursos contradictorios respecto a la transición, el estado de vulneración e insatisfacción de necesidades básicas de las personas victimizadas así como una alta confusión en la implementación de la Ley. Estos resultados, entre otros, permiten afirmar que, la reparación hoy, dista mucho de ser un proceso que aporte a la reconstrucción del tejido social, a la paz y la reconciliación. The first results of the inquiries on the valuation made by the very victims of the armed conflict, in the municipality of San Carlos Antioquia (Colombia are shown in this paper, which are part of the implementation of the 1448 Law (Law of Victims; such a research process of, in this first installment, evidenced among other findings, the contradiction between the official discourse and the story of the victims in relation to the reparation processes, contradictory speeches regarding the transition, the state of infringement and dissatisfaction of victimized people’s basic needs, as well as a high confusion as for the implementation of the Law. These findings, among others, allow to affirm that reparation today, is far from being a process that contributes to the reconstruction of the social fabric, to peace, and reconciliation.

  5. Food related processes in the insular cortex

    OpenAIRE

    Frank, Sabine; Kullmann, Stephanie; Veit, Ralf

    2013-01-01

    The insular cortex is a multimodal brain region with regional cytoarchitectonic differences indicating various functional specializations. As a multisensory neural node, the insular cortex integrates perception, emotion, interoceptive awareness, cognition, and gustation. Regarding the latter, predominantly the anterior part of the insular cortex is regarded as the primary taste cortex. In this review, we will specifically focus on the involvement of the insula in food processing and on multim...

  6. Food related processes in the insular cortex

    OpenAIRE

    Sabine eFrank; Stephanie eKullmann; Ralf eVeit

    2013-01-01

    The insular cortex is a multimodal brain region with regional cytoarchitectonic differences indicating various functional specializations. As a multisensory neural node, the insular cortex integrates perception, emotion, interoceptive awareness, cognition, and gustation. Regarding the latter, predominantly the anterior part of the insular cortex is regarded as the primary taste cortex.In this review, we will specifically focus on the involvement of the insula in food processing and on multimo...

  7. Food related processes in the insular cortex

    Directory of Open Access Journals (Sweden)

    Sabine eFrank

    2013-08-01

    Full Text Available The insular cortex is a multimodal brain region with regional cytoarchitectonic differences indicating various functional specializations. As a multisensory neural node, the insular cortex integrates perception, emotion, interoceptive awareness, cognition, and gustation. Regarding the latter, predominantly the anterior part of the insular cortex is regarded as the primary taste cortex.In this review, we will specifically focus on the involvement of the insula in food processing and on multimodal integration of food-related items. Influencing factors of insular activation elicited by various foods range from calorie-content to the internal physiologic state, body mass index or eating behavior. Sensory perception of food-related stimuli including seeing, smelling, and tasting elicits increased activation in the anterior and mid-dorsal part of the insular cortex. Apart from the pure sensory gustatory processing, there is also a strong association with the rewarding/hedonic aspects of food items, which is reflected in higher insular activity and stronger connections to other reward-related areas. Interestingly, the processing of food items has been found to elicit different insular activation in lean compared to obese subjects and in patients suffering from an eating disorder (anorexia nervosa, bulimia nervosa. The knowledge of functional differences in the insular cortex opens up the opportunity for possible noninvasive treatment approaches for obesity and eating disorders. To target brain functions directly, real-time functional magnetic resonance imaging neurofeedback offers a state-of-the-art tool to learn to control the anterior insular cortex activity voluntarily. First evidence indicates that obese adults have an enhanced ability to regulate the anterior insular cortex.

  8. 24 CFR 570.441 - Citizen participation-insular areas.

    Science.gov (United States)

    2010-04-01

    ... 24 Housing and Urban Development 3 2010-04-01 2010-04-01 false Citizen participation-insular areas...-Entitlement CDBG Grants in Hawaii and Insular Areas Programs § 570.441 Citizen participation—insular areas. (a) General. An insular area jurisdiction submitting an abbreviated consolidated plan under 24 CFR...

  9. municipios Maracaibo y San Francisco

    Directory of Open Access Journals (Sweden)

    Rosa E. Ortiz

    2005-01-01

    Full Text Available El estudio de las Organizaciones No Gubernamentales estuvo dirigido a caracterizar la diversidad de grupos y asociaciones que bajo el termino genérico de ONG’s existen en los municipios Maracaibo y San Francisco, los más poblados y relevantes en la vida política, económica, social y cultural del estado Zulia-Venezuela. Se planteó una investigación exploratoria y descriptiva. El resultado permitió reconocer a Existe un crecimiento sostenido de las ONG en estos municipios: b los sectores con mayor concentración son el de salud; educación; deporte y recreación; arte y cultura. c Las instituciones que promueven más organizaciones son la iglesia y el Estado, lo que supone es este último caso una reducción de las funciones que le corresponden, además de la minimización de costos y conflictos laborales. d Ambivalencia en la orientación de su funcionamiento: Algunas ONG’s implementan prácticas próximas a la mercantilización de los servicios con lo cual legitiman estrategias del modelo económico neoliberal mientras otras contribuyen a fortalecer la democratización de los servicios públicos. Se concluye que el crecimiento y características de las ONGs en estos municipios estuvo vinculado en los noventa y comienzos de la década de 2000 por la aplicación de las políticas públicas neoliberales.

  10. Morphometry of Human Insular Cortex and Insular Volume Reduction in Williams syndrome

    OpenAIRE

    Cohen, Jeremy D.; Mock, Jeffrey R.; Nichols, Taylor; Zadina, Janet; Corey, David M.; Lemen, Lisa; Bellugi, Ursula; Galaburda, Albert; Reiss, Allan; Foundas, Anne L.

    2009-01-01

    Functional imaging in humans and anatomical data in monkeys have implicated the insula as a multimodal sensory integrative brain region. The topography of insular connections is organized by its cytoarchitectonic regions. Previous attempts to measure the insula have utilized either indirect or automated methods. This study was designed to develop a reliable method for obtaining volumetric magnetic resonance imaging (MRI) measurements of the human insular cortex, and to validate that method by...

  11. The insular cortex: a comparative perspective.

    Science.gov (United States)

    Butti, Camilla; Hof, Patrick R

    2010-06-01

    The human insular cortex is involved in a variety of viscerosensory, visceromotor, and interoceptive functions, and plays a role in complex processes such as emotions, music, and language. Across mammals, the insula has considerable morphologic variability. We review the structure and connectivity of the insula in laboratory animals (mouse, domestic cat, macaque monkey), and we present original data on the morphology and cytoarchitecture of insular cortex in less common species including a large carnivore (the Atlantic walrus, Odobenus rosmarus), two artiodactyls (the pigmy hippopotamus, Hexaprotodon liberiensis, and the Western bongo, Tragelaphus eurycerus), two cetaceans (the beluga whale, Delphinapterus leucas, and the minke whale, Balaenoptera acutorostrata), and a sirenian (the Florida manatee, Trichechus manatus latirostris). The insula shows substantial variability in shape, extent, and gyral and sulcal patterns, as well as differences in laminar organization, cellular specialization, and structural association with the claustrum. Our observations reveal that the insular cortex is extremely variable among mammals. These differences could be related to the role exerted by specific and selective pressures on cortical structure during evolution. We conclude that it is not possible to identify a general model of organization for the mammalian insular cortex. PMID:20512368

  12. A gut feeling about insular seizures

    OpenAIRE

    Dionisio, S; A. Koenig; Murray, J.; Somerville, E

    2011-01-01

    A 43-year-old man presented to the Prince of Wales Hospital, Sydney, New South Wales, Australia, after experiencing his first tonic-clonic seizure. For the previous 2 years he had undergone gastroenterological investigation of episodes of gagging associated with hypersalivation and lachrymation, occurring three or four times per week. EEG showed epileptiform discharges in the right anterior temporal region; brain MRI revealed a lesion in the right insular cortex. Video-EEG telemetry demonstra...

  13. Insular Ischemic Stroke: Clinical Presentation and Outcome

    OpenAIRE

    Lemieux, F.; Lanthier, S.; Chevrier, M.-C.; de Gioia, L.; I. Rouleau; Cereda, C.; Nguyen, D.K.

    2012-01-01

    Background The insula is a small but complex structure located in the depth of the sylvian fissure, covered by the frontal, parietal and temporal operculum. Ischemic strokes limited to the insula are rare and have not been well studied. Our objective is to better define the clinical presentation and outcome of insular ischemic strokes (IIS). Methods We reviewed the institutional prospective, consecutive stroke database from two centers to identify patients with IIS seen between 2008 and 2010....

  14. Eusocial Apidae in tropical insular region

    OpenAIRE

    Maria Cristina Affonso Lorenzon; Marilena de Menezes Silva Conde; Celso Guimarães Barbosa

    2006-01-01

    This study examined species richness and relative abundance of eusocial Apidae in an insular region of rain-forest, southeastern Brazil. Sampling took place during one year, using an standardized method with entomological net, at sites of secondary growth habitats surrounded by Atlantic rain-forest. Thirteen species of eusocial Apidae were netted at flowers, over 80% of the captured individuals were meliponine species, although the presence of Apis mellifera, commonly dominant in Brazilian ha...

  15. Biodiversity and Natural Resource Management in Insular Southeast Asia

    OpenAIRE

    Gerald A. Persoon; Merlijn van Weerd

    2006-01-01

    Indonesia and the Philippines are amongst the world’s mega-biodiversity countries. Their insular nature has certainly contributed to this level of diversity. However, at the same time, there is rapid environmental degradation in terms of forest loss, loss of plant and animal species and overexploitation of wildlife. Insular Southeast Asia, with a population of over 300 million, is more densely populated than any other insular area. Yet, remarkably, this region plays a low-key role in comparat...

  16. Biblioteca pública y municipio

    OpenAIRE

    Merlo Vega, José Antonio; Omella i Claparols, Ester

    2004-01-01

    Se realiza un estudio sobre la vinculación de los municipios con la biblioteca pública en el entorno de la realidad española. The article presents a study about the Public Library in the boroughs in Spain.

  17. Three Systems of Insular Functional Connectivity Identified with Cluster Analysis

    OpenAIRE

    Deen, Ben; Pitskel, Naomi B.; Kevin A. Pelphrey

    2010-01-01

    Despite much research on the function of the insular cortex, few studies have investigated functional subdivisions of the insula in humans. The present study used resting-state functional connectivity magnetic resonance imaging (MRI) to parcellate the human insular lobe based on clustering of functional connectivity patterns. Connectivity maps were computed for each voxel in the insula based on resting-state functional MRI (fMRI) data and segregated using cluster analysis. We identified 3 ins...

  18. The Role of the Insular Cortex in Retaliation

    Science.gov (United States)

    Lobbestael, Jill; Arntz, Arnoud; Brugman, Suzanne; Sack, Alexander Thomas

    2016-01-01

    The insular cortex has consistently been associated with various aspects of emotion regulation and social interaction, including anger processing and overt aggression. Aggression research distinguishes proactive or instrumental aggression from retaliation, i.e. aggression in response to provocation. Here, we investigated the specific role of the insular cortex during retaliation, employing a controlled behavioral aggression paradigm implementing different levels of provocation. Fifteen healthy male volunteers underwent whole brain functional magnetic resonance imaging (fMRI) to identify brain regions involved in interaction with either a provoking or a non-provoking opponent. FMRI group analyses were complemented by examining the parametric modulations of brain activity related to the individual level of displayed aggression. These analyses identified a hemispheric lateralization as well as an anatomical segregation of insular cortex with specifically the left posterior part being involved in retaliation. The left-lateralization of insular activity during retaliation is in accordance with evidence from electro-physiological studies, suggesting left-lateralized fronto-cortical dominance during anger processing and aggressive acts. The posterior localization of insular activity, on the other hand, suggests a spatial segregation within insular cortex with particularly the posterior part being involved in the processing of emotions that trigger intense bodily sensations and immediate action tendencies. PMID:27096431

  19. Report to Congress on Insular Area energy vulnerability

    Energy Technology Data Exchange (ETDEWEB)

    1994-05-01

    This report was prepared in response to Section 1406 of the Energy Policy Act of 1992 (Public Law 102-486), which directed the Department of Energy (DOE) to ``conduct a study of the implications of the unique vulnerabilities of the insular areas to an oil supply disruption,`` and to ``outline how the insular areas shall gain access to vital oil supplies during times of national emergency.`` The Act defines the insular areas to be the US Virgin Islands and Puerto Rico in the Caribbean, and Guam, American Samoa, the Commonwealth of the Northern Mariana Islands (CNMI), and Palau in the Pacific. In the study, ``unique vulnerabilities`` were defined as susceptibility to: (1) more frequent or more likely interruptions of oil supplies compared to the US Mainland, and/or (2) disproportionately larger or more likely economic losses in the event of an oil supply disruption. In order to assess unique vulnerabilities, the study examined the insular areas` experience during past global disruptions of oil supplies and during local emergencies caused by natural disasters. The effects of several possible future global disruptions and local emergencies were also analyzed. Analyses were based on historical data, simulations using energy and economic models, and interviews with officials in the insular governments and the energy industry.

  20. Eusocial Apidae in tropical insular region

    Directory of Open Access Journals (Sweden)

    Maria Cristina Affonso Lorenzon

    2006-09-01

    Full Text Available This study examined species richness and relative abundance of eusocial Apidae in an insular region of rain-forest, southeastern Brazil. Sampling took place during one year, using an standardized method with entomological net, at sites of secondary growth habitats surrounded by Atlantic rain-forest. Thirteen species of eusocial Apidae were netted at flowers, over 80% of the captured individuals were meliponine species, although the presence of Apis mellifera, commonly dominant in Brazilian habitats. Foraging activity of these bee species were essentially non-seasonal, apparently affected by high humidity. The patterns in abundance and species richness observed in Ilha Grande differed with other studies conducted at tropical islands, which were characterized by the poverty of meliponine species.Esta pesquisa foi realizada em uma Ilha tropical do Sudeste brasileiro, onde se examinou a riqueza em espécies e sua abundância relativa de abelhas Apidae eussocias. A amostragem foi feita durante um ano, com pulçás entomológicos, utilizando-se método padrão de coleta em regiões de habitat secundário, cercado por floresta de mata Atlântica. Treze espécies de abelhas eussociais foram capturadas nas flores, mais de 80% do total de espécimes eram meliponíneos, apesar da presença de Apis mellifera, comumente dominante nos hábitats brasileiros. O forrageamento das espécies de abelhas apresentou-se asazonal, com forte influência de períodos muito úmidos. Na Ilha Grande, padrões de abundância e riqueza em espécies contrastam com estudos realizados em outras ilhas, que se caracterizam pela baixa ocorrência de meliponíneos.

  1. Biodiversity and Natural Resource Management in Insular Southeast Asia

    Directory of Open Access Journals (Sweden)

    Gerald A. Persoon

    2006-05-01

    Full Text Available Indonesia and the Philippines are amongst the world’s mega-biodiversity countries. Their insular nature has certainly contributed to this level of diversity. However, at the same time, there is rapid environmental degradation in terms of forest loss, loss of plant and animal species and overexploitation of wildlife. Insular Southeast Asia, with a population of over 300 million, is more densely populated than any other insular area. Yet, remarkably, this region plays a low-key role in comparative island studies. Both Indonesia and the Philippines have recently moved from centralized forms of government to regional and even local autonomy. This article presents an overview of the present state of biological and cultural diversity of the two archipelagic states. Recent changes in styles of natural resource management are discussed, with a focus on forest resources in the area.

  2. Insular cortex activity and the evocation of laughter.

    Science.gov (United States)

    Wattendorf, Elise; Westermann, Birgit; Lotze, Martin; Fiedler, Klaus; Celio, Marco R

    2016-06-01

    The insular cortex is fundamentally involved in the processing of interoceptive information. It has been postulated that the integrative monitoring of the bodily responses to environmental stimuli is crucial for the recognition and experience of emotions. Because emotional arousal is known to be closely coupled to functions of the anterior insula, we suspected laughter to be associated primarily with neuronal activity in this region. An anatomically constrained re-analysis of our imaging data pertaining to ticklish laughter, to inhibited ticklish laughter, and to voluntary laughter revealed regional differences in the levels of neuronal activity in the posterior and mid-/anterior portions of the insula. Ticklish laughter was associated specifically with right ventral anterior insular activity, which was not detected under the other two conditions. Hence, apparently, only laughter that is evoked as an emotional response bears the signature of autonomic arousal in the insular cortex. J. Comp. Neurol. 524:1608-1615, 2016. © 2015 Wiley Periodicals, Inc. PMID:26287648

  3. COYUNTURA ECONÓMICA Y CAMBIO EN LOS USOS DEL SUELO EN LA ISLA DE LA PALMA (CANARIAS, EL EJEMPLO DEL MUNICIPIO DE TAZACORTE

    Directory of Open Access Journals (Sweden)

    Carlos S. Martín Fernández

    2011-01-01

    Full Text Available El sector terciario y, en concreto, el turismo ha constituido el eje estructurador de la economía canaria en las últimas décadas. Un proceso que, en competencia con la agricultura, no se ha manifestado de igual forma en todas las islas. En esta línea, presentamos lo acontecido en la isla de La Palma, donde una rentable agricultura comercial, y por tanto un escaso interés de los propietarios por el cambio sectorial, ralentizó la penetración del fenómeno turístico. Para explicar este fenómeno, utilizamos el ejemplo del municipio de Tazacorte, uno de los emblemáticos enclaves plataneros insulares y, a la vez, uno de los más activos en el reciente cambio de funcionalización territorial.

  4. Turismo em meio insular africano: potencialidades, constrangimentos e impactos

    OpenAIRE

    Brito, Brígida Rocha; Pinto, Joaquim Ramos; Alarcão, Nuno; Duarte, Andreia; Loloum, Bastien

    2010-01-01

    “Turismo em Meio Insular Africano. Potencialidades, constrangimentos e impactos” é o resultado de um Projecto de Investigação financiado pela Fundação para a Ciência e a Tecnologia (FCT), intitutlado “O impacto do Turismo no Desenvolvimento Comunitário em África: análise de experiências insulares”, que consistiu num estudo comparativo entre dois Pequenos Estados Insulares em Desenvolvimento, Cabo Verde e São Tomé e Príncipe, sendo analisados os efeitos do turismo no desenvolvimento das popula...

  5. Ideas on the Margins: Professional Counseling and Ideological Insularity

    Science.gov (United States)

    Hansen, James

    2010-01-01

    Efforts to professionalize counseling practice have yielded extraordinary benefits to counselors. However, professionalization has also caused counselors to adopt strict definitions of their education, practices, and ethics. In order to combat the ideological insularity brought on by professionalization, several marginalized ideas are considered.…

  6. Second Surgery in Insular Low-Grade Gliomas

    Directory of Open Access Journals (Sweden)

    Tamara Ius

    2015-01-01

    Full Text Available Background. Given the technical difficulties, a limited number of works have been published on insular gliomas surgery and risk factors for tumor recurrence (TR are poorly documented. Objective. The aim of the study was to determine TR in adult patients with initial diagnosis of insular Low-Grade Gliomas (LGGs that subsequently underwent second surgery. Methods. A consecutive series of 53 patients with insular LGGs was retrospectively reviewed; 23 patients had two operations for TR. Results. At the time of second surgery, almost half of the patients had experienced progression into high-grade gliomas (HGGs. Univariate analysis showed that TR is influenced by the following: extent of resection (EOR (P<0.002, ΔVT2T1 value (P<0.001, histological diagnosis of oligodendroglioma (P=0.017, and mutation of IDH1 (P=0.022. The multivariate analysis showed that EOR at first surgery was the independent predictor for TR (P<0.001. Conclusions. In patients with insular LGG the EOR at first surgery represents the major predictive factor for TR. At time of TR, more than 50% of cases had progressed in HGG, raising the question of the oncological management after the first surgery.

  7. Insular projections to the parahippocampal region in the rat.

    Science.gov (United States)

    Mathiasen, Mathias L; Hansen, Lilliane; Witter, Menno P

    2015-06-15

    The insular cortex is involved in the perception of interoceptive signals, coding of emotional and affective states, and processing information from gustatory, olfactory, auditory, somatosensory, and nociceptive modalities. This information represents an important component of episodic memory, mediated by the parahippocampal-hippocampal region. A comprehensive description of insular projections to the latter region is lacking. Previous studies reported that insular projections do not target any of the subdivisions in the hippocampal formation (the dentate gyus, the cornu ammonis [CA] fields 1, 2, and 3 and the subiculum), but, in contrast, target the parahippocampal region (perirhinal, postrhinal, lateral and medial entorhinal cortices, and pre- and parasubiculum). The present study examined the topographical and laminar organization of insular projections to the parahippocampal region in the rat with the use of anterograde tracing. Notably, our results corroborated the absence of hippocampal projections. We further showed that the perirhinal and the lateral entorhinal cortices received extensive projections from the insular cortex, primarily from its agranular areas. With the exception of a weak projection to the postrhinal cortex, projections to the remaining parahippocampal areas were either absent or very sparse. The projections to the lateral entorhinal cortex displayed a preference for the deep layers of its most lateral subdivisions, known also to receive hippocampal inputs. Projections to the perirhinal cortex primarily targeted the superficial layers with a preference for its ventral subdivision, referred to as area 35. Our findings indicate that only processed information, reflecting emotional and affective states, but not primary gustatory and viscerosensory information, has direct access to the parahippocampal-hippocampal system. PMID:25641117

  8. Body size evolution in insular speckled rattlesnakes (Viperidae: Crotalus mitchellii.

    Directory of Open Access Journals (Sweden)

    Jesse M Meik

    Full Text Available BACKGROUND: Speckled rattlesnakes (Crotalus mitchellii inhabit multiple islands off the coast of Baja California, Mexico. Two of the 14 known insular populations have been recognized as subspecies based primarily on body size divergence from putative mainland ancestral populations; however, a survey of body size variation from other islands occupied by these snakes has not been previously reported. We examined body size variation between island and mainland speckled rattlesnakes, and the relationship between body size and various island physical variables among 12 island populations. We also examined relative head size among giant, dwarfed, and mainland speckled rattlesnakes to determine whether allometric differences conformed to predictions of gape size (and indirectly body size evolving in response to shifts in prey size. METHODOLOGY/PRINCIPAL FINDINGS: Insular speckled rattlesnakes show considerable variation in body size when compared to mainland source subspecies. In addition to previously known instances of gigantism on Angel de la Guarda and dwarfism on El Muerto, various degrees of body size decrease have occurred frequently in this taxon, with dwarfed rattlesnakes occurring mostly on small, recently isolated, land-bridge islands. Regression models using the Akaike information criterion (AIC showed that mean SVL of insular populations was most strongly correlated with island area, suggesting the influence of selection for different body size optima for islands of different size. Allometric differences in head size of giant and dwarf rattlesnakes revealed patterns consistent with shifts to larger and smaller prey, respectively. CONCLUSIONS/SIGNIFICANCE: Our data provide the first example of a clear relationship between body size and island area in a squamate reptile species; among vertebrates this pattern has been previously documented in few insular mammals. This finding suggests that selection for body size is influenced by changes in

  9. Insular Dysfunction in People at Risk for Psychotic Disorders

    Directory of Open Access Journals (Sweden)

    Gianna Sepede

    2015-06-01

    Full Text Available In response to the review article written by Pavuluri and May [1] and to the original article by Tomasino et al [2] we will comment the recent neuroimaging findings of insular dysfunctions in Schizophrenia and Bipolar Disorders, focusing on people at genetic risk for developing psychotic symptoms. A disrupted insular functioning was reported in several studies, even though the results were not univocal with respect to the direction of the effect (some studies reported a reduced activation, other an augmented activation and the lateralization of the observed alterations (left, right or bilateral. We will conclude that an altered function of the insula during both cognitive and emotional task may be a candidate vulnerability marker for psychotic disorders.

  10. Activation of the insular cortex during dynamic exercise in humans

    DEFF Research Database (Denmark)

    Williamson, James; Nobrega, A C; McColl, R;

    1997-01-01

    role as a site for regulation of autonomic activity. 2. Eight subjects were studied during voluntary active cycling and passively induced cycling. Additionally, four of the subjects underwent passive movement combined with electrical stimulation of the legs. 3. Increases in regional cerebral blood flow...... during active, but not passive cycling. There were no significant changes in rCBF for the right insula. Also, the magnitude of rCBF increase for leg primary motor areas was significantly greater for both active cycling and passive cycling combined with electrical stimulation compared with passive cycling...... alone. 5. These findings provide the first evidence of insular activation during dynamic exercise in humans, suggesting that the left insular cortex may serve as a site for cortical regulation of cardiac autonomic (parasympathetic) activity. Additionally, findings during passive cycling with electrical...

  11. Orosensory and Homeostatic Functions of the Insular Taste Cortex

    OpenAIRE

    de Araujo, Ivan E; Geha, Paul; Small, Dana M.

    2012-01-01

    The gustatory aspect of the insular cortex is part of the brain circuit that controls ingestive behaviors based on chemosensory inputs. However, the sensory properties of foods are not restricted to taste and should also include salient features such as odor, texture, temperature, and appearance. Therefore, it is reasonable to hypothesize that specialized circuits within the central taste pathways must be involved in representing several other oral sensory modalities in addition to taste. In ...

  12. Insular Volume Reduction in Patients with Social Anxiety Disorder

    OpenAIRE

    Kawaguchi, Akiko; Nemoto, Kiyotaka; Nakaaki, Shutaro; Kawaguchi, Takatsune; Kan, Hirohito; ARAI Nobuyuki; Shiraishi, Nao; Hashimoto, Nobuhiko; Akechi, Tatsuo

    2016-01-01

    Despite the fact that social anxiety disorder (SAD) is highly prevalent, there have been only a few structural imaging studies. Moreover, most of them reported about a volume reduction in amygdale, which plays a key role in the neural function of SAD. Insula is another region of interest. Its hyperactivity in regard to processing negative emotional information or interoceptive awareness has been detected in patients with SAD. Referring to these studies, we hypothesized that insular volumes mi...

  13. Insular cortex activity and the evocation of laughter

    OpenAIRE

    Wattendorf, Elise; Westermann, Birgit; Lotze, Martin; Fiedler, Klaus; Celio, Marco R.

    2015-01-01

    The insular cortex is fundamentally involved in the processing of interoceptive information. It has been postulated that the integrative monitoring of the bodily responses to environmental stimuli is crucial for the recognition and experience of emotions. Because emotional arousal is known to be closely coupled to functions of the anterior insula, we suspected laughter to be associated primarily with neuronal activity in this region. An anatomically constrained re-analysis of our imaging data...

  14. Hydraulic preferences of shrimps and fishes in tropical insular rivers

    OpenAIRE

    Girard, V.; Monti, D.; Valade, P.; Lamouroux, N.; Mallet, J.P.; Grondin, H.

    2014-01-01

    Hydraulic habitat models based on the preferences of species for the hydraulic characteristics of their microhabitats are frequently used to evaluate the impact on the habitat of a change in river flow regime. Their application in a tropical insular environment is still limited as little is known about the hydraulic preferences of species. Hydraulic preference models have been developed for 15 taxa (diadromous shrimps and fishes) sampled in 52 rivers in the Caribbean (the French West Indies) ...

  15. Auditory, Somatosensory, and Multisensory Insular Cortex in the Rat

    OpenAIRE

    Rodgers, Krista M.; Benison, Alexander M.; Klein, Andrea; Barth, Daniel S.

    2008-01-01

    Compared with other areas of the forebrain, the function of insular cortex is poorly understood. This study examined the unisensory and multisensory function of the rat insula using high-resolution, whole-hemisphere, epipial evoked potential mapping. We found the posterior insula to contain distinct auditory and somatotopically organized somatosensory fields with an interposed and overlapping region capable of integrating these sensory modalities. Unisensory and multisensory responses were un...

  16. The insular taste cortex contributes to odor quality coding

    Directory of Open Access Journals (Sweden)

    Maria G Veldhuizen

    2010-07-01

    Full Text Available Despite distinct peripheral and central pathways, stimulation of both the olfactory and the gustatory systems may give rise to the sensation of sweetness. Whether there is a common central mechanism producing sweet quality sensations or two discrete mechanisms associated independently with gustatory and olfactory stimuli is currently unknown. Here we used fMRI to determine whether odor sweetness is represented in the piriform olfactory cortex, which is thought to code odor quality, or in the insular taste cortex, which is thought to code taste quality. Fifteen participants sampled two concentrations of a pure sweet taste (sucrose, two sweet food odors (chocolate and strawberry, and two sweet floral odors (lilac and rose. Replicating prior work we found that olfactory stimulation activated the piriform, orbitofrontal and insular cortices. Of these regions, only the insula also responded to sweet taste. More importantly, the magnitude of the response to the food odors, but not to the non-food odors, in this region of insula was positively correlated with odor sweetness rating. These findings demonstrate that insular taste cortex contributes to odor quality coding by representing the taste-like aspects of food odors. Since the effect was specific to the food odors, and only food odors are experienced with taste, we suggest this common central mechanism develops as a function of experiencing flavors.

  17. Insular Volume Reduction in Patients with Social Anxiety Disorder.

    Science.gov (United States)

    Kawaguchi, Akiko; Nemoto, Kiyotaka; Nakaaki, Shutaro; Kawaguchi, Takatsune; Kan, Hirohito; Arai, Nobuyuki; Shiraishi, Nao; Hashimoto, Nobuhiko; Akechi, Tatsuo

    2016-01-01

    Despite the fact that social anxiety disorder (SAD) is highly prevalent, there have been only a few structural imaging studies. Moreover, most of them reported about a volume reduction in amygdale, which plays a key role in the neural function of SAD. Insula is another region of interest. Its hyperactivity in regard to processing negative emotional information or interoceptive awareness has been detected in patients with SAD. Referring to these studies, we hypothesized that insular volumes might reduce in patients with SAD and made a comparison of insular volumes between 13 patients with SAD and 18 healthy controls with matched age and gender using voxel-based morphometry. As a result, we found a significant volume reduction in insula in the SAD group. Our results suggest that the patients with SAD might have an insular volume reduction apart from amygdala. Since insula plays a critical role in the pathology of SAD, more attention should be paid not only to functional study but also morphometrical study of insula. PMID:26834652

  18. Insular Volume Reduction in Patients with Social Anxiety Disorder

    Science.gov (United States)

    Kawaguchi, Akiko; Nemoto, Kiyotaka; Nakaaki, Shutaro; Kawaguchi, Takatsune; Kan, Hirohito; Arai, Nobuyuki; Shiraishi, Nao; Hashimoto, Nobuhiko; Akechi, Tatsuo

    2016-01-01

    Despite the fact that social anxiety disorder (SAD) is highly prevalent, there have been only a few structural imaging studies. Moreover, most of them reported about a volume reduction in amygdale, which plays a key role in the neural function of SAD. Insula is another region of interest. Its hyperactivity in regard to processing negative emotional information or interoceptive awareness has been detected in patients with SAD. Referring to these studies, we hypothesized that insular volumes might reduce in patients with SAD and made a comparison of insular volumes between 13 patients with SAD and 18 healthy controls with matched age and gender using voxel-based morphometry. As a result, we found a significant volume reduction in insula in the SAD group. Our results suggest that the patients with SAD might have an insular volume reduction apart from amygdala. Since insula plays a critical role in the pathology of SAD, more attention should be paid not only to functional study but also morphometrical study of insula. PMID:26834652

  19. Beyond the tripartite cognition-emotion-interoception model of the human insular cortex

    OpenAIRE

    Uddin, Lucina Q.; Kinnison, Joshua; Pessoa, Luiz; Anderson, Michael L.

    2013-01-01

    Functional MRI studies report insular activations across a wide range of tasks involving affective, sensory, and motor processing, but also during tasks of high-level perception, attention, and control. While insular cortical activations are often reported in the literature, the diverse functional roles of this region are still not well understood. We used a meta-analytic approach to analyze the coactivation profiles of insular subdivisions -- dorsal anterior, ventral anterior, and posterior ...

  20. Electrical Stimulation of the Insular Region Attenuates Nicotine-Taking and Nicotine-Seeking Behaviors

    OpenAIRE

    Pushparaj, Abhiram; Hamani, Clement; Yu, Wilson; Shin, Damian S; Kang, Bin; Nobrega, José N; Le Foll, Bernard

    2012-01-01

    Pharmacological inactivation of the granular insular cortex is able to block nicotine-taking and -seeking behaviors in rats. In this study, we explored the potential of modulating activity in the insular region using electrical stimulation. Animals were trained to self-administer nicotine (0.03 mg/kg per infusion) under a fixed ratio-5 (FR-5) schedule of reinforcement followed by a progressive ratio (PR) schedule. Evaluation of the effect of stimulation in the insular region was performed on ...

  1. Algunas aves de gaitania: (municipio de ataco, tolima, colombia)

    OpenAIRE

    Olivares, Antonio

    2012-01-01

    This paper is a contribution to the knowledge of the avifauna of the Upper Magdalena River in Colombia.  The birds, representative of 50 species and subespecies, were taken at Gaitania Municipio de Ataco, Tolima, a zone of humid forest on the eastern of the Central Andes (30) 8 N., 750 49' W. of Greenwich. Alt. 2100 m. approx.).

  2. Prevalencia de la catarata en el municipio Camagüey

    Directory of Open Access Journals (Sweden)

    Sureya Martínez Castro

    2010-01-01

    Full Text Available Fundamento: La catarata es la principal causa de ceguera tratable en el mundo. Se estima que existen 20 millones de ciegos por cataratas, siendo éstas las responsables del 50% de las cegueras a nivel mundial. Ob jetivo: determinar la prevalencia de la catarata en el municipio de Camagüey desde diciembre de 2006 hasta junio de año 2007. Método: se realizó un estudio descriptivo en pacientes con catarata atendidos en el centro oftalmológico de Camagüey Carlos J. Finlay. El universo de estudio se constituyó por seiscientos y cinco pacientes mayores de quince años atendidos en la consulta de catarata del centro oftalmológico de Camagüey Carlos J. Finlay. Se seleccionó la muestra mediante el criterio de expertos, la cual se integró por ciento cincuenta y siete pacientes diagnosticados con catarata. Las variables de estudio fueron: edad, sexo, ocupación, agudeza visual, y causa de la catarata. Resultados: se determinó que el mayor por ciento de los pacientes presentó una pérdida visual severa¿ el 52,23% no tuvieron ocupaciones de riesgo. La causa senil representó el 68,79% de los casos y la prevalencia general fue del 25,95%. Conclusiones: la prevalencia de la catarata aumentó con la edad.

  3. Cardioembolism and Involvement of the Insular Cortex in Patients with Ischemic Stroke.

    Directory of Open Access Journals (Sweden)

    Jihoon Kang

    Full Text Available To evaluate whether topographical characteristics of insular involvement in ischemic stroke are associated with cardioembolism.A consecutive series of patients hospitalized for ischemic stroke within 7 days of symptom onset were identified. Based on diffusion-weighted imaging, we included those who had ischemic lesions in the middle cerebral artery (MCA territory. Each patient was assigned to one of two groups based on the presence or absence of insular involvement. The primary outcome was the frequency of cardioembolism, which was compared based on insular involvement. Of 1,311 patients with ischemic stroke in the MCA territory, 112 had insular involvement (8.5%. The frequency of cardioembolism in patients with insular involvement (52.7% was significantly higher than that in patients without insular involvement (30.4%, P < 0.001. Although insular involvement was associated with a severe baseline National Institutes of Health Stroke Scale score (13 vs. 4, it did not independently affect the 3-month functional outcome.In cases of stroke in the MCA territory, involvement of the insular cortex may be associated with a risk of cardioembolism.

  4. Altered functional connectivity of the insular cortex across prefrontal networks in cocaine addiction.

    Science.gov (United States)

    Cisler, Josh M; Elton, Amanda; Kennedy, Ashley P; Young, Jonathan; Smitherman, Sonet; Andrew James, George; Kilts, Clinton D

    2013-07-30

    Interoception is theorized to be an important process mediating substance use disorders, and the insular cortex is recognized as a core neural region supporting interoception. The purpose of this study was to compare the integration of the insular cortex into prefrontal-related resting-state networks between individuals with cocaine dependence and healthy controls. Participants comprised 41 patients with cocaine dependence and 19 controls who underwent a resting-state 3-T functional magnetic resonance imaging scan. Individuals with cocaine dependence demonstrated altered functional connectivity of the insular cortex, predominantly the right insular cortex, with all eight prefrontal-related resting-state networks identified through Independent Component Analysis (ICA). A conjunction analysis demonstrated that the right insular cortex was the neural region with the highest number of common group differences across the networks. There was no evidence that insular cortex connectivity commonly differed between groups for non-prefrontal-related networks. Further, seed-based functional connectivity analyses extended the network analyses and indicated that cocaine dependence was associated with greater connectivity of the right insula with the dorsomedial prefrontal cortex, inferior frontal gyrus, and bilateral dorsolateral prefrontal cortex. These data support the hypothesis that cocaine dependence is related to altered functional interactions of the insular cortex with prefrontal networks. The results suggest possible neural mechanisms by which the insular cortex and interoceptive information influence cognitive control and decision-making processes presumably mediated by prefrontal networks in the cocaine dependence process. PMID:23684980

  5. Isolated left posterior insular infarction and convergent roles in verbal fluency, language, memory, and executive function

    OpenAIRE

    Julayanont, Parunyou; Ruthirago, Doungporn; DeToledo, John C.

    2016-01-01

    The posterior insular cortex—a complex structure interconnecting various brain regions for different functions—is a rare location for ischemic stroke. We report a patient with isolated left posterior insular infarction who presented with multiple cognitive impairment, including impairment in semantic and phonemic verbal fluency.

  6. Activos intangibles y desarrollo sostenible en territorios insulares

    OpenAIRE

    Agustín J. Sánchez Medina

    2004-01-01

    [ES] El desarrollo sostenible resulta un objetivo a lograr para cualquier territorio, máxime si éste es una isla pequeña. Para lograr este fin de desarrollo y preservación de los recursos naturales, sería ideal basar buena parte de la economía insular en los activos intangibles, ya que éstos no se deprecian ni se desgastan con su utilización. En el presente trabajo se ha diseñado un modelo que permite identificar y medir los principales activos intangibles que contribuyen a que los territorio...

  7. Comercio de Colombia con el Caribe Insular, 1990-1999

    OpenAIRE

    María Modesta Aguilera Diaz

    2001-01-01

    El Caribe insular es un mercado regional que ofrece una gran oportunidad de exportación para los bienes y servicios colombianos, debido a que es importador de la mayoría de los bienes que consume. Esta investigación analiza la evolución y magnitud del comercio que Colombia mantuvo con esta región económica en la década de los noventa, encontrando un mercado aún muy reducido con una alta especialización hacia la venta de petróleo, pero con una tendencia a la diversificación hacia otros product...

  8. Insular Carcinoma of Thyroid Presenting as a Giant Skull Lesion: A Dilemma in Treatment.

    Directory of Open Access Journals (Sweden)

    Bhattacharya A

    2013-01-01

    Full Text Available Thyroid surgeons are becoming increasingly more aware of a histologically distinct subset of thyroid carcinoma whose classification falls between well-differentiated and anaplastic carcinomas with respect to both cell differentiation and clinical behavior. This subtype of tumors has been categorized as poorly differentiated or insular carcinoma, based on its characteristic cell groupings. Although the differentiation of insular carcinoma from other thyroid carcinomas has important prognostic and therapeutic significance, relatively little about insular carcinoma has been published in the otolaryngology literature. In this article, we discuss a case of insular carcinoma of thyroid presenting with concurrent distant metastasis to skull, lung, ribs, and inguinal region with review of the literature. We conclude that insular thyroid carcinoma warrants aggressive management with total thyroidectomy and excision of accessible giant lesion followed by radioactive iodine ablation of any remaining thyroid tissue.

  9. Municipio Mariño Estado Nueva Esparta

    Directory of Open Access Journals (Sweden)

    María Medina

    2008-01-01

    Full Text Available Se caracteriza la gastronomía típica margariteña como atractivo turístico del Municipio Mariño, sus componentes: restaurantes, autores, platos y promoción. Para formular recomendaciones que permitan su aprovechamiento. Los fundamentos teóricos se basan en el área turismo y gastronomía, y su importancia para la actividad. La metodología es descriptiva y su diseño es de campo. Como conclusión se tiene que la situación actual de la gastronomía típica margariteña como atractivo turístico del municipio se caracteriza por la falta de información y promoción, la cual no se está aprovechando como atractivo turístico debido a la falta de conocimiento sobre la gastronomía típica margariteña y donde además en los restaurantes del municipio se están modificando las recetas originales.

  10. Phylogeny and adaptation shape the teeth of insular mice.

    Science.gov (United States)

    Ledevin, Ronan; Chevret, Pascale; Ganem, Guila; Britton-Davidian, Janice; Hardouin, Emilie A; Chapuis, Jean-Louis; Pisanu, Benoit; da Luz Mathias, Maria; Schlager, Stefan; Auffray, Jean-Christophe; Renaud, Sabrina

    2016-02-10

    By accompanying human travels since prehistorical times, the house mouse dispersed widely throughout the world, and colonized many islands. The origin of the travellers determined the phylogenetic source of the insular mice, which encountered diverse ecological and environmental conditions on the various islands. Insular mice are thus an exceptional model to disentangle the relative role of phylogeny, ecology and climate in evolution. Molar shape is known to vary according to phylogeny and to respond to adaptation. Using for the first time a three-dimensional geometric morphometric approach, compared with a classical two-dimensional quantification, the relative effects of size variation, phylogeny, climate and ecology were investigated on molar shape diversity across a variety of islands. Phylogeny emerged as the factor of prime importance in shaping the molar. Changes in competition level, mostly driven by the presence or absence of the wood mouse on the different islands, appeared as the second most important effect. Climate and size differences accounted for slight shape variation. This evidences a balanced role of random differentiation related to history of colonization, and of adaptation possibly related to resource exploitation. PMID:26842576

  11. GLOBAL AND INSULAR DIMENSIONS: SPACE IN SARDINIA BLUES

    Directory of Open Access Journals (Sweden)

    Ana Maria Chiarini

    2010-11-01

    Full Text Available The aim of this work is to focus attention on the dimension of space in Sardinia Blues (Publisher Bompiani, 2008, by Flavio Soriga. This is justified by the centrality of space throughout the novel and by the title itself. The island of Sardinia is not just a mere setting, but it is most importantly the articulating and conducting thread for all the themes related to the characters’ self-identity and existential issues. The regional Sardinian space, perceived as stereotyped and folkloristic, and the global space, seen as a source of both desire and fear, are problematized by the three young self-proclaimed “pirates of the island” in their long hours of idleness. It is our intention to highlight the conflicts of this marginal insular condition, heavily contaminated by an inevitable process of change, in Soriga’s simultaneously innovative and nostalgic fragmented text, filled with songs’ extracts and languages hybrids.

  12. Time evolution of complex networks: commuting systems in insular Italy

    Science.gov (United States)

    de Montis, Andrea; Caschili, Simone; Chessa, Alessandro

    2011-03-01

    The aim of this paper is to study the dynamics of the commuting system of two insular regions of Italy, Sardinia and Sicily, inspected as complex networks. The authors refer to a 20-year time period and take into account three census data sets about the work and study-driven inter-municipal origin-destination movements of residential inhabitants in 1981, 1991 and 2001. Since it is likely that the number of municipalities (in this case, the vertices of the system) does not display sharp variations, the authors direct the study to the variation of the properties emerging through both a topological and a weighted network representation of commuting in the time periods indicated.

  13. Morbilidad oculta por parasitismo intestinal en Lagunita, municipio Girardot, Venezuela

    OpenAIRE

    Yanelis Núñez Gómez; Abdel Abad Hechavarría Espinosa

    2014-01-01

    Se realizó un estudio epidemiológico descriptivo de corte transversal, con el objetivo de determinar la morbilidad oculta por parasitismo intestinal en Lagunita, municipio Girardot, Venezuela; en el período de enero a octubre de 2009. El universo fue de 286 niños, lo que se corresponde con la población total del grupo de edad de menores de 15 años. De estos se seleccionaron por muestreo aleatorio simple 43 pacientes, a los que se les aplicó un cuestionario y se confeccionó una guía de observa...

  14. Calidad del servicio de taxis del municipio Maracaibo

    Directory of Open Access Journals (Sweden)

    Joheni A. Urdaneta G.

    2011-05-01

    Full Text Available El presente trabajo tiene como objetivo describir la calidad del servicio de los taxis en el municipio Maracaibo, ya que los mismos forman parte del sistema de transporte urbano de la ciudad, y es un servicio público fundamental para la convivencia de la sociedad; para lograr este objetivo se realizó una adaptación del modelo SERVPERF, diseñando un instrumento tipo cuestionario, con 32 ítems en 6 dimensiones, adecuado a las características propias del servicio de taxi, con la finalidad de confirmar que los ítems de los instrumentos se correspondían con las dimensiones adaptadas se aplicó la técnica de análisis factorial resultando un nuevo instrumento con 24 ítems en 3 dimensiones. Se utilizó la escala de Likert con tres (3 alternativas de respuesta. La investigación es de tipo descriptiva y aplicada, bajo diseño no experimental de tipo transeccional descriptiva y de campo. La población quedó conformada por los usuarios de las líneas de taxis del municipio Maracaibo. Se aplicó muestreo aleatorio por conglomerado. La confiabilidad del instrumento se midió a través del coeficiente alfa de Cronbach resultando de 0,82 lo cual se considera aceptable. Los resultados revelan que la calidad del servicio de taxis del municipio Maracaibo es mediana por lo tanto este servicio es susceptible a mejoras, las cuales son necesarias para elevar la calidad de vida de los marabinos. Este resultado se obtuvo con el instrumento originalmente adaptado de 32 ítems y con el cuestionario resultante del análisis factorial, de 24 ítems; esto confirma lo apropiado de esta técnica, ya que se redujo el número de ítems y de las dimensiones originalmente adaptadas y no se encontraron diferencias significativas en los resultados con ambos instrumentos; de esta manera se puede medir la calidad del servicio de taxis en el municipio Maracaibo a través de las dimensiones: confiabilidad del servicio, socialización y responsabilidad.

  15. Altered Functional Connectivity of the Insular Cortex across Prefrontal Networks in Cocaine Addiction

    OpenAIRE

    Cisler, Josh M.; Elton, Amanda; Kennedy, Ashley P.; Young, Jonathan; Smitherman, Sonet; James, George Andrew; Kilts, Clinton D

    2013-01-01

    Interoception is theorized to be an important process mediating substance use disorders, and the insular cortex is recognized as a core neural region supporting interoception. The purpose of this study was to compare the integration of the insular cortex into prefrontal-related resting-state networks between individuals with cocaine dependence and healthy controls. 41 participants with cocaine dependence and 19 control participants underwent a resting-state 3T fMRI scan. Individuals with coca...

  16. Probabilistic Tractography Recovers a Rostrocaudal Trajectory of Connectivity Variability in the Human Insular Cortex

    OpenAIRE

    Cerliani, Leonardo; Thomas, Rajat M.; Jbabdi, Saad; Siero, Jeroen CW; Nanetti, Luca; Crippa, Alessandro; Gazzola, Valeria; D'Arceuil, Helen; Keysers, Christian

    2011-01-01

    The insular cortex of macaques has a wide spectrum of anatomical connections whose distribution is related to its heterogeneous cytoarchitecture. Although there is evidence of a similar cytoarchitectural arrangement in humans, the anatomical connectivity of the insula in the human brain has not yet been investigated in vivo. In the present work, we used in vivo probabilistic white-matter tractography and Laplacian eigenmaps (LE) to study the variation of connectivity patterns across insular t...

  17. GluA1 Phosphorylation Contributes to Postsynaptic Amplification of Neuropathic Pain in the Insular Cortex

    OpenAIRE

    Qiu, Shuang; Zhang, Ming; Yan LIU; Guo, Yanyan; Zhao, Huan; Song, Qian; Zhao, Minggao; Huganir, Richard L.; Luo, Jianhong; Xu, Hui; Zhuo, Min

    2014-01-01

    Long-term potentiation of glutamatergic transmission has been observed after physiological learning or pathological injuries in different brain regions, including the spinal cord, hippocampus, amygdala, and cortices. The insular cortex is a key cortical region that plays important roles in aversive learning and neuropathic pain. However, little is known about whether excitatory transmission in the insular cortex undergoes plastic changes after peripheral nerve injury. Here, we found that peri...

  18. Spatial segregation of somato-sensory and pain activations in the human operculo-insular cortex

    OpenAIRE

    Mazzola, Laure; Faillenot, Isabelle; Barral, Fabrice Guy; Mauguière, François; Peyron, Roland

    2012-01-01

    The role of operculo-insular region in the processing of somato-sensory inputs, painful or not, is now well established. However, available maps from previous literature show a substantial overlap of cortical areas activated by these stimuli, and the region referred to as the "secondary somatosensory area (SII)" is widely distributed in the parietal operculum. Differentiating SII from posterior insula cortex, which is anatomically contiguous, is not easy, explaining why the "operculo-insular"...

  19. Roles of the Insular Cortex in the Modulation of Pain: Insights from Brain Lesions

    OpenAIRE

    Starr, Christopher J.; Sawaki, Lumy; Wittenberg, George F.; Burdette, Jonathan H.; Oshiro, Yoshitetsu; Quevedo, Alexandre S.; Coghill, Robert C.

    2009-01-01

    Subjective sensory experiences are constructed by the integration of afferent sensory information with information about the uniquely personal internal cognitive state. The insular cortex is anatomically positioned to serve as one potential interface between afferent processing mechanisms and more cognitively-oriented modulatory systems. However, the role of the insular cortex in such modulatory processes remain poorly understood. Two individuals with extensive lesions to the insula were exam...

  20. Insular Carcinoma of Thyroid Presenting as a Giant Skull Lesion: A Dilemma in Treatment.

    OpenAIRE

    Bhattacharya A; Sandeep Bansal; Amit Shankar; Gupta, Ashok K.; Rijuneeta Gupta; Amanjit Bal

    2013-01-01

    Thyroid surgeons are becoming increasingly more aware of a histologically distinct subset of thyroid carcinoma whose classification falls between well-differentiated and anaplastic carcinomas with respect to both cell differentiation and clinical behavior. This subtype of tumors has been categorized as poorly differentiated or insular carcinoma, based on its characteristic cell groupings. Although the differentiation of insular carcinoma from other thyroid carcinomas has important prognostic ...

  1. Subgroup characteristics of insular low-grade glioma based on clinical and molecular analysis of 42 cases.

    Science.gov (United States)

    Tang, Chao; Zhang, Zhen-Yu; Chen, Ling-Chao; Sun, Zelin; Zhang, Yi; Qin, Zhiyong; Yao, Yu; Zhou, Liang-Fu

    2016-02-01

    Although the classification of insular glioma has been established based on the anatomical location in order to facilitate personalized surgical resection, the diagnosis based on anatomical and functional characteristics becomes more complex when insular tumors extend into either the frontobasal brain region and/or the temporal lobe, as part of the limbic system. Moreover, prognosis of insular tumor resection is still controversial. Further analysis of subgroup characteristics of insular grade II gliomas based on clinical and molecular analysis is required to reliably determine patients' survival rates. In this retrospective study 20 purely insular grade II gliomas patients and 22 paralimbic grade II gliomas that involved frontal and/or temporal lobes were compared with regard to epidemiological and clinical characteristics. The molecular profiles including Isocitrate dehydrogenase 1 (IDH1), telomerase reverse transcriptase (TERT) promoter, and P53 mutations, 1p19q co-deletion were analyzed, and microRNA profiles were assessed by microarray and bioinformatics analysis. Purely insular grade II gliomas displayed a high frequency of IDH1 mutations with favorable outcome. IDH1 mutated paralimbic glioma shared many parameters with the purely insular glioma in respect to growth patterns, survival, and microRNA profile, but differed significantly from the IDH1 wild type paralimbic gliomas. Our findings suggest that IDH1 mutations can define subpopulations of insular gliomas with distinct disease entities regardless of tumor extension patterns. These findings could be useful to develop a customized treatment strategy for insular glioma patients. PMID:26586262

  2. Nuevos accesos a la C-32 en el municipio de Teià

    OpenAIRE

    Pérez Albert, Aina; Barrio Ciutat, Laura

    2013-01-01

    Como su nombre indica, este proyecto pretende facilitar el acceso de los habitantes del municipio de Teià a la autopista C-32. Para ello, se propone el diseño de nuevas vías de acceso y salida en dicho municipio. El proyecto consiste principalmente en dar una alternativa viable a dichos habitantes, ya que actualmente los únicos accesos a la autopista C-32 disponibles están situados en Premià de Dalt y Alella, obligando a los habitantes de Teià a desplazarse a dichos municipios ...

  3. The Insular Cortex and the Regulation of Cardiac Function.

    Science.gov (United States)

    Oppenheimer, Stephen; Cechetto, David

    2016-04-01

    Cortical representation of the heart challenges the orthodox view that cardiac regulation is confined to stereotyped, preprogrammed and rigid responses to exteroceptive or interoceptive environmental stimuli. The insula has been the region most studied in this regard; the results of clinical, experimental, and functional radiological studies show a complex interweave of activity with patterns dynamically varying regarding lateralization and antero-posterior distribution of responsive insular regions. Either acting alone or together with other cortical areas including the anterior cingulate, medial prefrontal, and orbito-frontal cortices as part of a concerted network, the insula can imbue perceptions with autonomic color providing emotional salience, and aiding in learning and behavioral decision choice. In these functions, cardiovascular input and the right anterior insula appear to play an important, if not pivotal role. At a more basic level, the insula gauges cardiovascular responses to exteroceptive and interoceptive stimuli, taking into account memory, cognitive, and reflexive constructs thereby ensuring appropriate survival responses and maintaining emotional and physiological homeostasis. When acquired derangements to the insula occur after stroke, during a seizure or from abnormal central processing of interoceptive or exteroceptive environmental cues as in psychiatric disorders, serious consequences can arise including cardiac electrophysiological, structural and contractile dysfunction and sudden cardiac death. PMID:27065176

  4. Ecoturismo en el municipio de Choachí – Cundinamarca.

    OpenAIRE

    2012-01-01

    Esta monografía identificó los potenciales lugares ecoturísticos del Municipio de Choachí, Departamento de Cundinamarca, para lo cual se llevó a cabo una revisión de los aspectos teóricos y conceptuales sobre el turismo y las formas de hacer turismo, con base en ésta se realizó un análisis del turismo internacional y nacional como contextualización para abordar la definición de ecoturismo, su clasificación, características y aplicación. Se diseñó y aplicó una encuesta para establecer la v...

  5. Estudio de la anurofauna del municipio de Ibagué

    Directory of Open Access Journals (Sweden)

    Páez C. A.

    2000-12-01

    Full Text Available

    Colombia es considerada, en el mundo, el país más rico en especies de anfibios (Lynch, 1998. De las 4.300 especies registradas en el planeta, Colombia presenta 583 (Ruiz et al., 1996. Esto refleja la gran riqueza que el país tiene respecto a la diversidad  no sólo de anfibios, sino también de otros grupos de animales y plantas. Entre los anfibios el mayor número de especies se encuentra en el orden Anura, los comúnmente conocidos como ranas y sapos, le sigue el orden Urodela (salamandras y por ultimo esta el Apoda (cecilias. En Colombia se han reportado 540 especies de anuros, pertenecientes a 56 géneros y 9 familias (Ruiz et 01., 1996. Por otra parte, entre las regiones de Colombia con mayor aporte a la diversidad de anuros esta la Cordillera Central. Estimulados por esta riqueza de anuros y dada las amplias zonas del país aún desconocidas a nivel de inventarios, entre ellas el municipio de Ibagué, el cual por su posición geográfica en la Cordillera Central y por su variedad de niveles altitudinales, ecosistemas y el hábitat para el albergue de los anuros, se llevó a cabo el presente estudio, con el propósito de reconocer el aporte de este municipio a la diversidad descrita con respecto a la Cordillera Central ya Colombia.

  6. Insular Area energy vulnerability, Puerto Rico, US Virgin Islands. Technical Appendix 1

    Energy Technology Data Exchange (ETDEWEB)

    Stern, M.; Willard, E.E.; Efferding, S. [Ensys Energy & Systems, Inc., Flemington, NJ (United States)

    1994-05-01

    This report was prepared in response to Section 1406 of the Energy Policy Act of 1992 (P.L. 192-486). The Act directed the Department of Energy (DOE) to ``conduct a study of the implications of the unique vulnerabilities of the insular areas to an oil supply disruption,`` and to ``outline how the insular areas shall gain access to vital oil supplies during times of national emergency.`` The Act defines the insular areas to be the US Virgin Islands and Puerto Rico in the Caribbean, and Guam, American Samoa, the Commonwealth of the Northern Mariana Islands (CNMI), and Palau in the Pacific. This report is the analysis of Puerto Rico and the US Virgin Islands. In the study, ``unique vulnerabilities`` were defined as susceptibility to: (1) more frequent or more likely interruptions of oil supplies compared to the mainland, and/or (2) disproportionately larger or more likely economic losses in the event of an oil supply disruption. In order to asses unique vulnerabilities, the study examined in the insular areas` experience during past global disruptions of oil supplies and during local emergencies caused by natural disasters. The effects of several possible future global disruptions and local emergencies were also analyzed. Analyses were based on historical data, simulations using energy and economic models, and interviews with officials in the insular governments and the energy industry.

  7. Insular Area energy vulnerability, Puerto Rico, US Virgin Islands. Technical Appendix 1

    International Nuclear Information System (INIS)

    This report was prepared in response to Section 1406 of the Energy Policy Act of 1992 (P.L. 192-486). The Act directed the Department of Energy (DOE) to ''conduct a study of the implications of the unique vulnerabilities of the insular areas to an oil supply disruption,'' and to ''outline how the insular areas shall gain access to vital oil supplies during times of national emergency.'' The Act defines the insular areas to be the US Virgin Islands and Puerto Rico in the Caribbean, and Guam, American Samoa, the Commonwealth of the Northern Mariana Islands (CNMI), and Palau in the Pacific. This report is the analysis of Puerto Rico and the US Virgin Islands. In the study, ''unique vulnerabilities'' were defined as susceptibility to: (1) more frequent or more likely interruptions of oil supplies compared to the mainland, and/or (2) disproportionately larger or more likely economic losses in the event of an oil supply disruption. In order to asses unique vulnerabilities, the study examined in the insular areas' experience during past global disruptions of oil supplies and during local emergencies caused by natural disasters. The effects of several possible future global disruptions and local emergencies were also analyzed. Analyses were based on historical data, simulations using energy and economic models, and interviews with officials in the insular governments and the energy industry

  8. Crecimiento relativo del producto per capita de los municipios de la Republica Mexicana, 1988-2004

    OpenAIRE

    Manuel Gomez-Zaldivar; Ernesto Laguna; Berenice Martinez; Marco Mosqueda

    2010-01-01

    Analizamos la hipotesis de convergencia en el producto per capita para el caso de los municipios de Mexico en el periodo 1988- 2004. El analisis emplea la metodologia de Barro y Sala-i-Martin (1992) usada en la mayoria de los estudios empiricos que utilizan datos de seccion cruzada. Los resultados sugieren evidencia a favor de la hipotesis de convergencia entre municipios para el periodo estudiado, lo cual difiere con lo encontrado en estudios similares a niveles estatal y regional. Ademas id...

  9. Dyscalculia, dysgraphia, and left-right confusion from a left posterior peri-insular infarct.

    Science.gov (United States)

    Bhattacharyya, S; Cai, X; Klein, J P

    2014-01-01

    The Gerstmann syndrome of dyscalculia, dysgraphia, left-right confusion, and finger agnosia is generally attributed to lesions near the angular gyrus of the dominant hemisphere. A 68-year-old right-handed woman presented with sudden difficulty completing a Sudoku grid and was found to have dyscalculia, dysgraphia, and left-right confusion. Magnetic resonance imaging (MRI) showed a focus of abnormal reduced diffusivity in the left posterior insula and temporoparietal operculum consistent with acute infarct. Gerstmann syndrome from an insular or peri-insular lesion has not been described in the literature previously. Pathological and functional imaging studies show connections between left posterior insular region and inferior parietal lobe. We postulate that the insula and operculum lesion disrupted key functional networks resulting in a pseudoparietal presentation. PMID:24817791

  10. Impaired executive functioning after left anterior insular stroke: a case report.

    Science.gov (United States)

    Markostamou, Ioanna; Rudolf, Jobst; Tsiptsios, Iakovos; Kosmidis, Mary H

    2015-01-01

    Given the insular's anatomic complexity and functional interconnectivity, acute lesions may result in varied clinical presentations, including autonomic, somatosensory, perceptual, motor, affective, and cognitive deficits. Although functional neuroimaging studies have demonstrated its role in executive functions, no clinical manifestations have been reported to date. We present the case of a woman with an acute left anterior insular infarction leading to executive (i.e., word and design fluency, mental flexibility, sustained attention, inhibitory control), but not language, visuoperceptual, or memory impairment. This case confirms the left anterior insula's involvement in executive functioning and suggests that an infarction may result in executive impairment. PMID:25537237

  11. Calodium (Capillaria hepaticum (Nematoda, Capillariidae in insular small rodent populations

    Directory of Open Access Journals (Sweden)

    Bugmyrin Sergey

    2014-12-01

    Full Text Available The data on the distribution of the nematode Calodium hepaticum (Bancroft 1893 Moravec 1982 (syn.: Capillaria hepatica, Hepaticola hepatica on the islands of Kizhi Archipelago are reported (N 62°00'; E 35°12'. Samples were collected on 18 islands and the mainland part of the Kizhi skerries region in the period from August 2005 till 2014. The method of partial helminthological dissection was applied to 346 specimens of rodents belonging to two species – the bank vole Myodes glareolus Schreber 1780 (301 spm. and the field vole Microtus agrestis Linnaeus 1761 (45 spm.. The prevalence and the abundance index of nematode were 16.6% and 1.1 in M. glareolus and 11.1%; 0.3 in M. agrestis, respectively. The highest prevalence and abundance of C. hepaticum were detected in mature voles. No sex-related differences were found. C. hepaticum was present in 12 of 19 sampling sites. On the islands where the sample number (host individuals was over 15, the highest prevalence and abundance values were 57% and 5.8 spm., respectively. Significant positive coefficients of correlation (Spearman’s and Pearson’s ones between nematode numbers and characteristics of the island were found in the pair «Prevalence – degree of isolation» (0.48 and 0.49. Single-factor analysis of variance showed that the size of the island had some effect on the nematode invasion prevalence and abundance. However, no significant regression relationship between the prevalence and abundance of nematodes and characteristics of an island was revealed by multivariate regression analysis (multiple regression: the coefficient of determination of the regression equation R2 < 0.3, and the regression coefficients were insignificant The reasons for high abundance of C. hepaticum in northern insular ecosystems are discussed. Possible key factors for the stable vitality of the parasite populations are: 1 favourable hydrothermal conditions of the soil in the shore (littoral zone; 2 the

  12. Distinct Excitation to Pulpal Stimuli between Somatosensory and Insular Cortices.

    Science.gov (United States)

    Nakamura, H; Shirakawa, T; Koshikawa, N; Kobayashi, M

    2016-02-01

    Somatosensory information from the dental pulp is processed in the primary (S1) and secondary somatosensory cortex (S2) and in the insular oral region (IOR). Stimulation of maxillary incisor and molar initially induces excitation in S2/IOR, rostrodorsal to the mandibular incisor and molar pulp-responding regions. Although S1 and S2/IOR play their own roles in nociceptive information processing, the anatomical and physiological differences in the temporal activation kinetics, dependency on stimulation intensity, and additive or summative effects of simultaneous pulpal stimulation are still unknown. This information contributes not only to understanding topographical organization but also to speculating about the roles of S1 and S2/IOR in clinical aspects of pain regulation. In vivo optical imaging enables investigation of the spatiotemporal profiles of cortical excitation with high resolution. We determined the distinct features of optical responses to nociceptive stimulation of dental pulps between S1 and S2/IOR. In comparison to S1, optical signals in S2/IOR showed a larger amplitude with a shorter rise time and a longer decay time responding to maxillary molar pulp stimulation. The latency of excitation in S2/IOR was shorter than in S1. S2/IOR exhibited a lower threshold to evoke optical responses than S1, and the peak amplitude was larger in S2/IOR than in S1. Unexpectedly, the topography of S1 that responded to maxillary and mandibular incisor and molar pulps overlapped with the most ventral sites in S1 that was densely stained with cytochrome oxidase. An additive effect was observed in both S1 and S2/IOR after simultaneous stimulation of bilateral maxillary molar pulps but not after contralateral maxillary and mandibular molar pulp stimulation. These findings suggest that S2/IOR is more sensitive for detecting dental pulp sensation and codes stimulation intensity more precisely than S1. In addition, contra- and ipsilateral dental pulp nociception converges

  13. Paleo relief study of insular shelf electric sounding in Amarillo level basin Rivera distric in Uruguay

    International Nuclear Information System (INIS)

    In the framework of the Uranium project the geophysical team composed by BRGM and DINAMIGE members have carried out a study of insular shelf morphology. It was a sedimentary basin level in the middle of the Isla Cristalina. The following topics were developed: geographical location, geologic framework, developed works and materials, methods and results

  14. The biogeography of threatened insular iguanas and opportunities for invasive vertebrate management

    Science.gov (United States)

    Tershy, Bernie R.; Newton, Kelly M.; Spatz, Dena R.; Swinnerton, Kirsty; Iverson, John B.; Fisher, Robert N.; Harlow, Peter S.; Holmes, Nick D.; Croll, Donald A.

    2016-01-01

    Iguanas are a particularly threatened group of reptiles, with 61% of species at risk of extinction. Primary threats to iguanas include habitat loss, direct and indirect impacts by invasive vertebrates, overexploitation, and human disturbance. As conspicuous, charismatic vertebrates, iguanas also represent excellent flagships for biodiversity conservation. To assist planning for invasive vertebrate management and thus benefit threatened iguana recovery, we identified all islands with known extant or extirpated populations of Critically Endangered and Endangered insular iguana taxa as recognized by the International Union for Conservation of Nature (IUCN) Red List of Threatened Species. For each island, we determined total area, sovereignty, the presence of invasive alien vertebrates, and human population. For the 23 taxa of threatened insular iguanas we identified 230 populations, of which iguanas were extant on 185 islands and extirpated from 45 islands. Twenty-one iguana taxa (91% of all threatened insular iguana taxa) occurred on at least one island with invasive vertebrates present; 16 taxa had 100% of their population(s) on islands with invasive vertebrates present. Rodents, cats, ungulates, and dogs were the most common invasive vertebrates. We discuss biosecurity, eradication, and control of invasive vertebrates to benefit iguana recovery: (1) on islands already free of invasive vertebrates; (2) on islands with high iguana endemicity; and (3) for species and subspecies with small total populations occurring across multiple small islands. Our analyses provide an important first step toward understanding how invasive vertebrate management can be planned effectively to benefit threatened insular iguanas.

  15. Close association of centroacinar ductular and insular cells in the rat pancreas

    OpenAIRE

    Leeson, Thomas S.; Leeson, Roland

    1986-01-01

    Close contacts between endocrine insular cells and exocrine acinar, centroacinar and ductular cells occur frequently in the rat pancreas as seen by both light and electron microscopy. lslets of Langerhans are surrounded incompletely by a thin connective tissue capsule or mantle but numerous exocrine-endocrine cell contacts occur at the periphery, which is irregular with considerable "intermingling" of the two cell types. Centroacinar ...

  16. vInterocepción y corteza insular: convergencia multimodal y surgimiento de la conciencia corporal

    Directory of Open Access Journals (Sweden)

    Juan Blas Couto1

    2012-01-01

    Full Text Available La interocepción como censado del estado homeostático y visceral, ha sido recientemente postulada como requisito para la conciencia de estados emocionales corporales (Craig, 2009. Vías parasimpáticas y espinotalámicas que codifican esta información corporal tienen relevo en la corteza insular. Simultáneamente, han sido descriptas otras funciones insulares implicadas en procesos conscientes, como la intencionalidad, la toma de decisiones, la conciencia sensorio-motora, la percepción temporal, reconocer la imagen visual de uno mismo o percibir confiables a otros individuos (Craig, 2009; Ibanez, Gleichgerrcht, & Manes, 2010. Esta evidencia, sumada a resultados de estudios de lesión y neuroimágenes funcionales, sugiere que la corteza insular anterior (IA sería la encargada de integrar señales multimodales cognitivas, emocionales y sociales para dirigir las conductas motivacionales que entrañan la supervivencia del individuo. En esta revisión analizamos el cúmulo de evidencia que involucran a la interocepción y al procesamiento insular integrativo en el surgimiento de estados emocionales conscientes, a través de estudios de lesiones y de técnicas de conectividad funcional en resonancia magnética funcional (RMF.

  17. Microsurgery Resection of Intrinsic Insular Tumors via Transsylvian Surgical Approach in 12 Cases

    International Nuclear Information System (INIS)

    To investigate the clinical characteristics, operative methods, and diffusion tensor imaging (DTI) in the resection of intrinsic insular gliomas via transsylvian approach. From June 2008 to June 2010, 12 patients with intrinsic insular gliomas were treated via transsylvian microsurgical approach, with preoperative magnetic resonance imaging diffusion tensor imaging (MR DTI) evaluation. The data of these patients were retrospectively analyzed. All patients had astrocytoma, including 8 patients of Grades I to II, 2 patients of Grades III to IV, and 2 patients of mixed glial tumors. The insular tumors were completely removed in 9 patients, whereas they were only partially removed from 3 patients. No death was related to the operations. Two patients had transient aphasia, 2 experienced worsened hemiplegia on opposite sides of their bodies, and 2 had mild hemiplegia and language function disturbance. Most of the insular gliomas are of low grade. By evaluating the damage of the corticospinal tract through DTI and using ultrasonography to locate the tumors during operation, microsurgery treatment removes the lesions as much as possible, protects the surrounding areas, reduces the mobility rate, and improves the postoperative quality of life

  18. Towards grid parity in insular energy systems: The case of photovoltaics (PV) in Cyprus

    International Nuclear Information System (INIS)

    Grid parity is defined as the threshold at which a grid-connected renewable energy sources (RES) system supplies electricity to the end user at the same price as grid-supplied electricity. Predictions from the 2006 time-frame expected retail grid parity for solar in the 2016 to 2020 era, but due to rapid downward pricing changes, more recent calculations have forced dramatic reductions in time scale, and the suggestion that solar has already reached grid parity in a wide variety of locations. This study presents aspects of achieving grid parity in insular energy systems, based on a case study applied in Cyprus. The analysis presents the variation of the manufacturing cost, the selling price of the produced energy, and the performance of the solar panels to examine the conditions of accomplishing grid parity event. It is also concluded that grid parity may be easier achieved in insular energy systems due to the higher cost of primary energy. - Highlights: • This study presents aspects of achieving grid parity in insular energy systems, based on a case study applied in Cyprus. • The impact of the manufacturing cost and the feed in tariff on accomplishing grid parity event is analysed. • A sensitivity analysis is conducted to define the parameters that strongly affect the goal of grid parity. • It is concluded that grid parity may be easier achieved in insular energy systems due to the higher cost of primary energy

  19. Node Detection Using High-Dimensional Fuzzy Parcellation Applied to the Insular Cortex.

    Science.gov (United States)

    Vercelli, Ugo; Diano, Matteo; Costa, Tommaso; Nani, Andrea; Duca, Sergio; Geminiani, Giuliano; Vercelli, Alessandro; Cauda, Franco

    2016-01-01

    Several functional connectivity approaches require the definition of a set of regions of interest (ROIs) that act as network nodes. Different methods have been developed to define these nodes and to derive their functional and effective connections, most of which are rather complex. Here we aim to propose a relatively simple "one-step" border detection and ROI estimation procedure employing the fuzzy c-mean clustering algorithm. To test this procedure and to explore insular connectivity beyond the two/three-region model currently proposed in the literature, we parcellated the insular cortex of 20 healthy right-handed volunteers scanned in a resting state. By employing a high-dimensional functional connectivity-based clustering process, we confirmed the two patterns of connectivity previously described. This method revealed a complex pattern of functional connectivity where the two previously detected insular clusters are subdivided into several other networks, some of which are not commonly associated with the insular cortex, such as the default mode network and parts of the dorsal attentional network. Furthermore, the detection of nodes was reliable, as demonstrated by the confirmative analysis performed on a replication group of subjects. PMID:26881093

  20. Las competencias de los Cabildos Insulares: análisis y perspectivas

    OpenAIRE

    Sarmiento Acosta, Manuel Jesús

    1994-01-01

    [ES] Para cualquier jurista en formación investigar sobre un tema tan vivo y tan plagado de consecuencias prácticas es estimulante, porque los Cabildos Insulares, para bien o para mal, llevan siendo más de ochenta años las Corporaciones típicas de las Islas.

  1. en el empoderamiento comunitario en el municipio de Muqui, Brasil

    Directory of Open Access Journals (Sweden)

    Altair Toledo-Machado

    2006-01-01

    Full Text Available El desarrollo de la estrategia del mejoramiento participativo, en las comunidades de pequeños agricultores ubicados en el municipio de Muqui, en el Estado de Espírito Santo, Brasil, influyó en la autosostenibilidad de la producción de semilla y en la obtención de variedades de maíz mejor adaptadas a sus sistemas de manejo Los agricultores de esta región vienen desarrollando, desde 1993, trabajos en el campo comunitario de semillas. A partir de 2001, como estrategias del mejoramiento participativo fueron desarrollados trabajos referentes al rescate de variedades locales y mejoradas de maíz, y ensayos de evaluación de variedades. Diez variedades fueron utilizadas en este trabajo: Sol da Manhã , Eldorado, BR 106, BR 473, BR 451, Saracura, Caiano de Sobrália, Palha Rôxa de Santa Catarina, Caiano de Espírito Santo y Fortaleza. Con excepción de las variedades BR 106, BR 473, BR 451 y Saracura, que fueron seleccionadas de forma convencional, las demás fueron seleccionadas con base en fitomejoramiento participativo. Fueron realizados tres ciclos de selección en cada una de esas variedades y las mismas fueron evaluadas en los años agrícolas de 2002/2003, 2003/2004 y 2004/2005, en ensayos en bloques al azar, con tres repeticiones y manejo orgánico. Las actividades de mejoramiento, en las comunidades de Muqui, fueran realizadas enfatizando la variedad Fortaleza, se empleó el esquema de selección masal estratificada. Los campos de semillas comunitarias se incrementaron, tanto en productividad como en la mayor participación de los agricultores, además de la participación en los ensayos y los campos de mejoramiento

  2. Morbilidad oculta por parasitismo intestinal en Lagunita, municipio Girardot, Venezuela

    Directory of Open Access Journals (Sweden)

    Yanelis Núñez Gómez

    2014-08-01

    Full Text Available Se realizó un estudio epidemiológico descriptivo de corte transversal, con el objetivo de determinar la morbilidad oculta por parasitismo intestinal en Lagunita, municipio Girardot, Venezuela; en el período de enero a octubre de 2009. El universo fue de 286 niños, lo que se corresponde con la población total del grupo de edad de menores de 15 años. De estos se seleccionaron por muestreo aleatorio simple 43 pacientes, a los que se les aplicó un cuestionario y se confeccionó una guía de observación, para describir los factores epidemiológicos que influyen en la infestación por parasitismo intestinal. Además, se les realizaron análisis de las heces fecales seriadas para el diagnóstico del parasitismo. El método estadístico fue el cálculo de las frecuencias absolutas y relativas. A través del estudio de las heces fecales seriadas se obtuvo que 27 pacientes tenían parasitosis intestinal, para una morbilidad de 62,79%, con una mayor incidencia en los niños de cinco a nueve años de edad. El sexo femenino fue el más afectado. Los factores epidemiológicos que más influyeron fueron: los malos hábitos higiénicos personales, el entorno desfavorable y el consumo de agua no potable; existió relación entre el nivel socioeconómico, los factores epidemiológicos y la morbilidad por parasitismo intestinal. Predominó la parasitosis por Entamoeba Histolytica, con 11 casos, para un 40,74%. La diarrea, las molestias abdominales y la pérdida de apetito constituyeron los principales síntomas

  3. Evaluación y cartografiado del peligro por deslizamientos en el municipio de Moa

    Directory of Open Access Journals (Sweden)

    Yexenia Viltres-Milán

    2014-10-01

    Full Text Available La ocurrencia de deslizamientos en el municipio de Moa genera situaciones de amenaza a la industria, las comunidades, las actividades socio-económicas y al medio ambiente. El presente trabajo tuvo el propósito de evaluar y cartografiar, aplicando los Sistemas de Información Geográfica (SIG, el peligro por deslizamiento en el municipio. Como basamento metodológico se utilizó la guía para el estudio de peligro, vulnerabilidad y riesgo por deslizamientos del terreno, elaborada por el Grupo Nacional de Gestión de Riesgos, del año 2012. El resultado fue el mapa de peligrosidad total por deslizamiento del municipio de Moa, a escala 1: 100 000, el cual constituye una herramienta más de gestión y reducción del riesgo en el ordenamiento territorial

  4. Calidad de vida y el desarrollo institucional de los municipios petroleros de Colombia (2000-2010

    Directory of Open Access Journals (Sweden)

    Diana Patricia Niño Muñoz

    2015-12-01

    Full Text Available Los recursos naturales pueden ser una maldición para el desarrollo humano dependiendo de las instituciones. Para determinar si un declive institucional y el deterioro de la calidad de vida se presentan en forma independiente en los municipios petroleros del país se construyeron dos índices para el periodo 2000-2010. Los resultados sugieren que hay un umbral institucional, por encima del cual la relación entre regalías per cápita y calidad institucional es negativa, una situación necesaria pero no suficiente en los municipios que sufrieron la maldición de recursos naturales y que alerta sobre las políticas de estos municipios y la nueva reglamentación de las regalías.

  5. Diagnóstico Territorial Integral del municipio de Ciudad Darío

    Directory of Open Access Journals (Sweden)

    Laurent Dietsch

    2010-12-01

    Full Text Available EN ESTE ARTÍCULO SE PRESENTA EL “DIAGNÓSTICO TERRITORIAL INTEGRAL de Ciudad Darío” realizado como trabajo de fin de curso de la Maestría en Desarrollo Rural de la Universidad Centroamericana. Este estudio ha buscado contribuir a la formulación de propuestas de intervención de los actores sociales del municipio de Ciudad Darío sobre los procesos estratégicos de desarrollo del territorio. Se realizó unazonificación integral del municipio, identificándose cuatro zonas: una zona alta, campesina de agricultura de subsistencia; una zona de laderas secas; una planicie seca de latifundio ganadero; y finalmente, una zona de llanos y vegas fértiles de riego semi-intensivo. Posteriormente, se identificaron y clasificaron por capital (ambiental, económico, social-humano y político-institucional y nivel territorial, los principales procesos de cambio que afectan o podrían afectar al municipio. Su análisis permitió caracterizar las principales oportunidades y amenazas para el desarrollo del territorio y, al relacionarlo con las fortalezas y debilidades identificadas en la zonificación, evidenciar los principales factores que podrían incidir en el municipio y sus principales retos. Para enfrentar estos retos, se identificaron tres ejes estratégicos: la reducción de los niveles de inseguridad alimentaria y vulnerabilidad ambiental del municipio; el fomento integral de las cadenas de producción de hortalizas; y la prevención de riesgos sociales. Para cada uno de estos ejes se ha definido un conjunto de acciones ordenadas por capital y nivel territorial, orientadas a incidir sobre los principales procesos de cambio identificados. Finalmente, se definieron ejes estratégicos transversales enfocados al desarrollo de capacidades de incidir sobre los procesos claves de desarrollo del municipio.

  6. Mancomunidad de Municipios Costal del Sol Oriental-Axarquía

    OpenAIRE

    Carrión García, Benedicto

    2015-01-01

    El trabajo realizado parte del año de la creación de la Mancomunidad de la Costa el Sol Oriental, 1972. Esta Mancomunidad se constituye con los cinco municipios costeros de la zona oriental de MálagA. Es una mancomunidad fundamentalmente turística aunque el fin urbanístico aparece como la causa principal de su creación. Los indicios apuntan a que no fue una mancomunidad que surgiera de la inquietud de los municipios que después se mancomunaron, sino de una iniciativa estatal, y así ta...

  7. Consecuencias de la concentración parcelaria en el municipio de Medina de Pomar (Burgos)

    OpenAIRE

    Isla Peña, Samuel

    2016-01-01

    RESUMEN El ser humano vive en constante desarrollo y este no es ajeno a la tierra y el parcelario. En este trabajo busco mostrar los grandes cambios que han sucedido en el municipio de Medina de Pomar desde los años 60 hasta la actualidad. La concentración parcelaria que se ejecutó entre 1966 y 1972 tuvo una gran incidencia también en la sociedad, economía y urbanización del municipio. Fue el detonante de un cambio profundo en la estructura económica, pasando de ser prominentemente agraria a ...

  8. Aves de la costa del pacífico, municipio de guapi, cauca, colombia, i

    OpenAIRE

    Olivares, Antonio

    2012-01-01

    Las aves estudiadas en este trabajo las coleccioné en el Municipio de Guapi, Cauca, Colombia, durante el tiempo comprendido entre el 21 de noviembre de 1955 y el 19 de enero de 1956.  El Municipio está situado en el extremo suroeste del Departamento del Cauca. entre los 20 11' y 20 40' de latitud norte y los 770 10' y 78" (aprox.) de longitud occidental de Greenwich. Limita al norte con Timbiquí, al oriente con el Tambo, al sur y occidente con el Departamento de Nariño y al noroeste lo baña e...

  9. La movilidad y la distribución del ingreso en los municipios de Coahuila

    OpenAIRE

    Luis Gutiérrez Flores; Alba Verónica Méndez Delgado; José Refugio Reyes Valdés

    2011-01-01

    En este artículo se analiza la dinámica en la distribución del ingreso de los municipios del estado de Coahuila, de 1970 a 2000. Para esto se utilizan herramientas de creciente aceptación, como alternativas para estudiar la dinámica en las desigualdades regionales: las cadenas de Markov y las funciones de densidad. En este caso, el análisis se desagrega hasta el municipio, con el objetivo de conocer cómo interactúan dichas unidades económicas entre sí, un contexto que tendría que enriquecer l...

  10. El espacio industrial en Canarias. El tejido empresarial y el territorio en las áreas insulares

    OpenAIRE

    Hernández Torres, Santiago

    2003-01-01

    [ES] Trabajo de investigación referido a las implicaciones en el territorio del desarrollo de los usos industriales del suelo, atendiendo a las singularidades derivadas de los espacios insulares en el ejemplo de Canarias

  11. Insular species of Afrotropical freshwater crabs (Crustacea: Decapoda: Brachyura: Potamonautidae and Potamidae) with special reference to Madagascar and the Seychelles

    OpenAIRE

    Cumberlidge, N.

    2008-01-01

    The evolutionary relationships between island and mainland faunas of the 24 species of insular freshwater crabs in the Afrotropical region are reviewed in the light of phylogenetic studies. Twenty insular species of freshwater crabs are endemic, and four are also found on the neighboring mainland of Africa. The Atlantic Ocean islands of Sherbro, Bioko, Príncipe, and São Tomé support five species of Potamonautidae, while the Western Indian Ocean islands of the Seychelles, Zanzibar, Pemba, Mafi...

  12. Impaired anterior insular activation during risky decision making in young adults with internet gaming disorder.

    Science.gov (United States)

    Lee, Deokjong; Lee, Junghan; Yoon, Kang Joon; Kee, Namkoong; Jung, Young-Chul

    2016-05-25

    Internet gaming disorder is defined as excessive and compulsive use of the internet to engage in games that leads to clinically significant psychosocial impairment. We tested the hypothesis that individuals with internet gaming disorder would be less sensitive to high-risk situations and show aberrant brain activation related to risk prediction processing. Young adults with internet gaming disorder underwent functional MRI while performing a risky decision-making task. The healthy control group showed stronger activations within the dorsal attention network and the anterior insular cortex, which were not found in the internet gaming disorder group. Our findings imply that young adults with internet gaming disorder show impaired anterior insular activation during risky decision making, which might make them vulnerable when they need to adapt new behavioral strategies in high-risk situations. PMID:27092470

  13. Island colonization and evolution of the insular woody habit in Echium L. (Boraginaceae).

    OpenAIRE

    Böhle, U R; Hilger, H.H.; Martin, W. F.

    1996-01-01

    Numerous island-inhabiting species of predominantly herbaceous angiosperm genera are woody shrubs or trees. Such "insular woodiness" is strongly manifested in the genus Echium, in which the continental species of circummediterranean distribution are herbaceous, whereas endemic species of islands along the Atlantic coast of north Africa are woody perennial shrubs. The history of 37 Echium species was traced with 70 kb of noncoding DNA determined from both chloroplast and nuclear genomes. In al...

  14. Taste-Potentiated Odor Aversion Learning in Rats with Lesions of the Insular Cortex

    OpenAIRE

    Lin, Jian-You; Roman, Christopher; Reilly, Steve

    2009-01-01

    The current study assessed the influence of excitotoxic lesions of the insular cortex (IC) on taste-potentiated odor aversion (TPOA) learning. Water-deprived rats initially received a single odor-toxicosis or odor/taste-toxicosis pairing and were subsequently tested, in separate trials, with the odor and the taste stimulus. Indicating TPOA, neurologically intact rats conditioned with the odor/taste compound stimulus acquired significantly stronger odor aversions than normal rats conditioned w...

  15. The anterior insular and anterior cingulate cortices in emotional processing for self-face recognition

    OpenAIRE

    Morita, Tomoyo; Tanabe, Hiroki C.; Akihiro T Sasaki; Shimada, Koji; Kakigi, Ryusuke; Sadato, Norihiro

    2013-01-01

    Individuals can experience embarrassment when exposed to self-feedback images, depending on the extent of the divergence from the internal representation of the standard self. Our previous work implicated the anterior insular cortex (AI) and the anterior cingulate cortex (ACC) in the processing of embarrassment; however, their exact functional contributions have remained uncertain. Here, we explored the effects of being observed by others while viewing self-face images on the extent of embarr...

  16. Insular Cortex Lesions Fail to Block Flavor and Taste Preference Learning in Rats

    OpenAIRE

    Touzani, Khalid; Sclafani, Anthony

    2007-01-01

    The role of the insular cortex (IC) in learning to associate orosensory cues with the oral and post-oral properties of carbohydrate was examined. Rats with either small (gustatory region) or large (gustatory and visceral regions) ibotenic acid lesions of the IC learned to prefer flavors (Experiments 1 & 3) and taste mixtures (Experiments 2 & 4) paired with intragastric (IG) infusions of maltodextrin. The rats with large IC lesions also learned a preference for a flavor cue paired with the swe...

  17. Differential psychophysiological interactions of insular subdivisions during varied oropharyngeal swallowing tasks

    OpenAIRE

    Humbert, Ianessa A.; McLaren, Donald G.

    2013-01-01

    Abstract The insula is a highly integrated cortical region both anatomically and functionally. It has been shown to have cognitive, social–emotional, gustatory, and sensorimotor functions. Insular involvement in both normal and abnormal swallowing behavior is well established, yet its functional connectivity is unclear. Studies of context‐dependent connectivity, or the connectivity during different task conditions, have the potential to reveal information about synaptic function of the insula...

  18. Differential psychophysiological interactions of insular subdivisions during varied oropharyngeal swallowing tasks

    OpenAIRE

    Humbert, Ianessa A.; McLaren, Donald G.

    2014-01-01

    Abstract The insula is a highly integrated cortical region both anatomically and functionally. It has been shown to have cognitive, social–emotional, gustatory, and sensorimotor functions. Insular involvement in both normal and abnormal swallowing behavior is well established, yet its functional connectivity is unclear. Studies of context‐dependent connectivity, or the connectivity during different task conditions, have the potential to reveal information about synaptic function of the insula...

  19. Insular Cortex Projections to Frontal and Parahippocampal Areas in the Rat

    OpenAIRE

    Mathiasen, Mathias Lysholt

    2015-01-01

    Insular cortex er en struktur i hjernen som har avgjørende betydning for hjernens behandling av en rekke sensoriske inntrykk, og strukturen er også involvert i koding av emosjonelle og affektive tilstander. Den primære smakscortex er lokaliseret i dette område, samtidig som området er involvert i behandling av olfaktorisk, visceral, auditorisk, somatosensorisk og nociceptiv informasjon. Denne informasjonen behandles i et samspill med andre strukturer i hjernen og i denne avhand...

  20. Posterior insular cortex – a site of vestibular–somatosensory interaction?

    OpenAIRE

    Baier, Bernhard; zu Eulenburg, Peter; Best, Christoph; Geber, Christian; Müller-Forell, Wibke; Birklein, Frank; Dieterich, Marianne

    2013-01-01

    Background In previous imaging studies the insular cortex (IC) has been identified as an essential part of the processing of a wide spectrum of perception and sensorimotor integration. Yet, there are no systematic lesion studies in a sufficient number of patients examining whether processing of vestibular and the interaction of somatosensory and vestibular signals take place in the IC. Methods We investigated acute stroke patients with lesions affecting the IC in order to fill this gap. In de...

  1. Insular Cortex Abnormalities in Psychotic Major Depression: Relationship to Gender and Psychotic Symptoms

    OpenAIRE

    Cohen, Jeremy D.; Nichols, Taylor; KELLER, JENNIFER; Gomez, Rowena G.; Schatzberg, Alan F.; Reiss, Allan L

    2013-01-01

    Recent data suggests that psychotic major depression (PMD) may be a discrete disorder distinguishable from nonpsychotic major depression (NPMD), and that patients with PMD may be more similar to individuals with schizophrenia than individuals with NPMD. The insula is a brain region in which morphometric changes have been associated with psychotic symptom severity in schizophrenia and affective psychosis. It was hypothesized that insular volumes would be reduced in PMD compared to NPMD and con...

  2. Node Detection Using High-Dimensional Fuzzy Parcellation Applied to the Insular Cortex

    OpenAIRE

    Ugo Vercelli; Matteo Diano; Tommaso Costa; Andrea Nani; Sergio Duca; Giuliano Geminiani; Alessandro Vercelli; Franco Cauda

    2015-01-01

    Several functional connectivity approaches require the definition of a set of regions of interest (ROIs) that act as network nodes. Different methods have been developed to define these nodes and to derive their functional and effective connections, most of which are rather complex. Here we aim to propose a relatively simple “one-step” border detection and ROI estimation procedure employing the fuzzy c-mean clustering algorithm. To test this procedure and to explore insular connectivity beyon...

  3. Variable temporo-insular cortex neuroanatomy in primates suggests a bottleneck effect in eastern gorillas

    OpenAIRE

    Barks, Sarah K.; Bauernfeind, Amy L.; Bonar, Christopher J.; Cranfield, Michael R.; de Sousa, Alexandra A.; Erwin, Joseph M.; Hopkins, William D.; Lewandowski, Albert H.; Mudakikwa, Antoine; Phillips, Kimberley A.; Raghanti, Mary Ann; Stimpson, Cheryl D.; Hof, Patrick R; Zilles, Karl; Sherwood, Chet C.

    2014-01-01

    In this study, we describe an atypical neuroanatomical feature present in several primate species that involves a fusion between the temporal lobe (often including Heschl’s gyrus in great apes) and the posterior dorsal insula, such that a portion of insular cortex forms an isolated pocket medial to the Sylvian fissure. We assessed the frequency of this fusion in 56 primate species (including apes, Old World monkeys, New World monkeys, and strepsirrhines) using either magnetic resonance images...

  4. Ontogeny of Neuro-Insular Complexes and Islets Innervation in the Human Pancreas

    OpenAIRE

    AlexandraE.Proshchina

    2014-01-01

    The ontogeny of the neuro-insular complexes (NIC) and the islets innervation in human pancreas has not been studied in detail. Our aim was to describe the developmental dynamics and distribution of the nervous system structures in the endocrine part of human pancreas. We used doublestaining with antibodies specific to pan-neural markers (neuron-specific enolase (NSE) and S100 protein) and to hormones of pancreatic endocrine cells. NSE and S100-positive nerves and ganglia were identified in th...

  5. Smart and sustainable power systems operations, planning, and economics of insular electricity grids

    CERN Document Server

    Catalão, João P S

    2015-01-01

    The smart grid initiative, integrating advanced sensing technologies, intelligent control methods, and bi-directional communications into the contemporary electricity grid, offers excellent opportunities for energy efficiency improvements and better integration of distributed generation, coexisting with centralized generation units within an active network. A large share of the installed capacity for recent renewable energy sources already comprises insular electricity grids, since the latter are preferable due to their high potential for renewables. However, the increasing share of

  6. Involvement of the insular cortex in regulating glucocorticoid effects on memory consolidation of inhibitory avoidance training

    OpenAIRE

    Fornari, Raquel V.; Wichmann, Romy; Atucha, Erika; Desprez, Tifany; Eggens-Meijer, Ellie; Roozendaal, Benno

    2012-01-01

    Glucocorticoids are known to enhance the consolidation of memory of emotionally arousing experiences by acting upon a network of interconnected brain regions. Although animal studies typically do not consider the insular cortex (IC) to be part of this network, the present findings indicate that the IC is importantly involved in regulating glucocorticoid effects on memory consolidation of emotionally arousing inhibitory avoidance training. The specific glucocorticoid receptor (GR) agonist RU 2...

  7. Involvement of the insular cortex in regulating glucocorticoid effects on memory consolidation of inhibitory avoidance training

    OpenAIRE

    Raquel Fornari

    2012-01-01

    Glucocorticoids are known to enhance the consolidation of memory of emotionally arousing experiences by acting upon a network of interconnected brain regions. Although animal studies typically do not consider the insular cortex (IC) to be part of this network, the present findings indicate that the IC is importantly involved in regulating glucocorticoid effects on memory consolidation of emotionally arousing inhibitory avoidance training. The specific glucocorticoid receptor agonist RU 2836...

  8. Insular neural system controls decision-making in healthy and methamphetamine-treated rats.

    Science.gov (United States)

    Mizoguchi, Hiroyuki; Katahira, Kentaro; Inutsuka, Ayumu; Fukumoto, Kazuya; Nakamura, Akihiro; Wang, Tian; Nagai, Taku; Sato, Jun; Sawada, Makoto; Ohira, Hideki; Yamanaka, Akihiro; Yamada, Kiyofumi

    2015-07-21

    Patients suffering from neuropsychiatric disorders such as substance-related and addictive disorders exhibit altered decision-making patterns, which may be associated with their behavioral abnormalities. However, the neuronal mechanisms underlying such impairments are largely unknown. Using a gambling test, we demonstrated that methamphetamine (METH)-treated rats chose a high-risk/high-reward option more frequently and assigned higher value to high returns than control rats, suggestive of changes in decision-making choice strategy. Immunohistochemical analysis following the gambling test revealed aberrant activation of the insular cortex (INS) and nucleus accumbens in METH-treated animals. Pharmacological studies, together with in vivo microdialysis, showed that the insular neural system played a crucial role in decision-making. Moreover, manipulation of INS activation using designer receptor exclusively activated by designer drug technology resulted in alterations to decision-making. Our findings suggest that the INS is a critical region involved in decision-making and that insular neural dysfunction results in risk-taking behaviors associated with altered decision-making. PMID:26150496

  9. Ontogeny of neuro-insular complexes and islets innervation in the human pancreas.

    Directory of Open Access Journals (Sweden)

    Alexandra E. Proshchina

    2014-04-01

    Full Text Available The ontogeny of the neuro-insular complexes (NIC and the islets innervation in human pancreas has not been studied in detail. Our aim was to describe the developmental dynamics and distribution of the nervous system structures in the endocrine part of human pancreas. We used doublestaining with antibodies specific to pan-neural markers (neuron-specific enolase (NSE and S100 protein and to hormones of pancreatic endocrine cells. NSE and S100-positive nerves and ganglia were identified in the human fetal pancreas from gestation week (gw 10 onwards. Later the density of S100 and NSE-positive fibers increased. In adults this network was sparse. The islets innervation started to form from gw 14. NSE-containing endocrine cells were identified from gw 12 onwards. Additionally, S100-positive cells were detected both in the periphery and within some of the islets starting at gw 14. The analysis of islets innervation has shown that the fetal pancreas contained neuro-insular complexes and the number of these complexes was reduced in adults. The highest density of neuro-insular complexes is detected during middle and late fetal periods, when the mosaic islets, typical for adults, form. The close integration between the developing pancreatic islets and the nervous system structures may play an important role not only in the hormone secretion, but also in the islets morphogenesis.

  10. Two insular regions are differentially involved in behavioral variant FTD and nonfluent/agrammatic variant PPA.

    Science.gov (United States)

    Mandelli, Maria Luisa; Vitali, Paolo; Santos, Miguel; Henry, Maya; Gola, Kelly; Rosenberg, Lynne; Dronkers, Nina; Miller, Bruce; Seeley, William W; Gorno-Tempini, Maria Luisa

    2016-01-01

    The non-fluent/agrammatic variant of primary progressive aphasia (nfvPPA) and the behavioral variant frontotemporal dementia (bvFTD) are focal neurodegenerative disorders belonging to the FTD-spectrum clinical syndromes. NfvPPA is characterized by effortful speech and/or agrammatism and left frontal atrophy, while bvFTD is characterized by social-emotional dysfunction often accompanied by right-lateralized frontal damage. Despite their contrasting clinical presentations, both disorders show prominent left anterior insula atrophy. We investigated differential patterns of insular sub-region atrophy in nfvPPA and bvFTD. Based on knowledge of insular connectivity and physiology, we hypothesized that the left superior precentral region of the dorsal anterior insula (SPGI) would be more atrophic in nvfPPA due to its critical role in motor speech, whereas the ventral anterior region would be more atrophied in bvFTD reflecting its known role in social-emotional-autonomic functions. Early stage nfvPPA and bvFTD patients matched for disease severity, age, gender and education and healthy controls participated in the study. Detailed clinical history, neurological examination, neuropsychological screening evaluation, and high-resolution T1-weighted brain magnetic resonance imaging (MRI) were collected. Voxel-based morphometry (VBM) was applied to perform group comparisons across the whole brain and in bilateral insula region of interest (ROI). Correlation analyses between insular sub-region atrophy and relevant clinical features were performed. Whole brain group comparisons between nfvPPA and bvFTD showed the expected predominantly left or right anterior insular atrophy pattern. ROI analysis of bilateral insula showed that the left SPGI was significantly more atrophied in nfvPPA compared to bvFTD, while the bilateral ventral anterior and right dorsal anterior insula sub-regions were more atrophied in bvFTD than nfvPPA. Only left SPGI volume correlated with speech production

  11. Exploring Monte Carlo methods

    CERN Document Server

    Dunn, William L

    2012-01-01

    Exploring Monte Carlo Methods is a basic text that describes the numerical methods that have come to be known as "Monte Carlo." The book treats the subject generically through the first eight chapters and, thus, should be of use to anyone who wants to learn to use Monte Carlo. The next two chapters focus on applications in nuclear engineering, which are illustrative of uses in other fields. Five appendices are included, which provide useful information on probability distributions, general-purpose Monte Carlo codes for radiation transport, and other matters. The famous "Buffon's needle proble

  12. The effects of feral cats on insular wildlife: the Club-Med syndrome

    Science.gov (United States)

    Hess, Steve C.; Danner, Raymond M.

    2012-01-01

    Domestic cats have been introduced to many of the world‘s islands where they have been particularly devastating to insular wildlife which, in most cases, evolved in the absence of terrestrial predatory mammals and feline diseases. We review the effects of predation, feline diseases, and the life history characteristics of feral cats and their prey that have contributed to the extirpation and extinction of many insular vertebrate species. The protozoan Toxoplasma gondii is a persistent land-based zoonotic pathogen hosted by cats that is known to cause mortality in several insular bird species. It also enters marine environments in cat feces where it can cause the mortality of marine mammals. Feral cats remain widespread on islands throughout the world and are frequently subsidized in colonies which caretakers often assert have little negative effect on native wildlife. However, population genetics, home range, and movement studies all suggest that there are no locations on smaller islands where these cats cannot penetrate within two generations. While the details of past vertebrate extinctions were rarely documented during contemporary time, a strong line of evidence is emerging that the removal of feral cats from islands can rapidly facilitate the recolonization of extirpated species, particularly seabirds. Islands offer unique, mostly self-contained ecosystems in which to conduct controlled studies of the effects of feral cats on wildlife, having implications for continental systems. The response of terrestrial wildlife such as passerine birds, small mammals, and herptiles still needs more thorough long-term monitoring and documentation after the removal of feral cats.

  13. Functional topography of cardiovascular regulation along the rostrocaudal axis of the rat posterior insular cortex.

    Science.gov (United States)

    Marins, Fernanda Ribeiro; Limborço-Filho, Marcelo; Xavier, Carlos Henrique; Biancardi, Vinicia C; Vaz, Gisele C; Stern, Javier E; Oppenheimer, Stephen M; Fontes, Marco Antonio Peliky

    2016-04-01

    Cardiovascular (CV) representation has been identified within the insular cortex (IC) and a lateralization of function previously suggested. In order to further understand the role of IC on cardiovascular control, the present study compared the CV responses evoked by stimulation of N-metil-D-aspartate (NMDA) receptors in the right and left posterior IC at different rostrocaudal levels. Intracortical microinjections of NMDA were performed into the IC of male Wistar rats anaesthetized with urethane (1.4 g/kg) prepared for blood pressure, heart rate and renal sympathetic nerve activity. Gene expression of NMDA receptor subunits NR2A and NR2B in the IC was confirmed by RT-PCR. Immunofluorescence for the NMDA receptor NR1 subunit was demonstrated in the IC (coordinates anteroposterior (AP) +1.5, 0.0 and -1.5 mm). A cardiac sympathoinhibitory site was identified, more rostrally located than identified in previous studies. A site of sympathoexcitatory cardiac control was identified more caudal to this region in agreement with earlier work. Under the experimental conditions, no lateralization of cardiovascular function was identified with chemical stimulation eliciting the same responses from either left or right insular cortices. No tonic role of the insula on cardiovascular control was identified with the use of the NMDA antagonist, AP-5. Peri-insular microinjection of NMDA was without cardiovascular effect indicating the specificity of the insula as a cardiovascular regulatory site. The current study reveals a functional topography for autonomic cardiovascular control along the rostrocaudal axis of the posterior IC. PMID:26748663

  14. Structural basis of empathy and the domain general region in the anterior insular cortex

    Directory of Open Access Journals (Sweden)

    Isabella Mutschler

    2013-05-01

    Full Text Available Empathy is key for healthy social functioning and individual differences in empathy have strong implications for manifold domains of social behavior. Empathy comprises emotional and cognitive components, such as feeling and knowing what another person is feeling, and may also be closely linked to sensorimotor processes, which go along with the motivation and behavior to respond compassionately to another person’s feelings and to reduce another person’s pain. There is growing evidence for local plastic change in the structure of the healthy adult human brain in response to environmental demands or intrinsic factors. Here we have investigated changes in brain structure resulting from or predisposing to empathy. Structural MRI data of 101 healthy adult females was analyzed. Empathy in fictitious as well as real-life situations was assessed by using a widely used and validated self-evaluation measure. Furthermore, empathy-related structural effects were also put into the context of a functional map of the anterior insular cortex determined by activation likelihood estimate (ALE meta-analysis of previous functional imaging studies. We found that gray matter density in the left dorsal anterior insular cortex correlates with empathy and that this area overlaps with the domain general region of the anterior insula that is situated in-between functional systems involved in emotion-cognition, pain and motor tasks as determined by our meta-analysis. Thus, we propose that this insular region where we find structural differences depending on individual empathy might play a crucial role in modulating the efficiency of neural integration underlying emotional, cognitive, and sensorimotor information which is essential for global empathy.

  15. High rate of deletion of chromosomes 1p and 19q in insular oligodendroglial tumors

    OpenAIRE

    Wu, Adam; Aldape, Kenneth; Lang, Frederick F.

    2009-01-01

    It has been reported recently that oligodendroglial tumors arising in the insula rarely harbor co-deletions of chromosomes 1p and 19q, a molecular signature which is associated with a good prognosis and increased responsiveness to radiation and chemotherapy compared with tumors in which 1p and/or 19q is intact. In the context of this claim, we analyzed a series of insular oligodendroglial tumors in order to determine the frequency of 1p/19q co-deletion in tumors arising in this region. We ide...

  16. Long-term monitoring of an insular population of Barbary Falcon Falco peregrinus pelegrinoides

    OpenAIRE

    Siverio, Manuel; Siverio, Felipe; Rodríguez, Beneharo; Rodríguez, Airam

    2012-01-01

    Territory spacing and breeding rates of an insular population (north-western Tenerife, Canary Islands) of Barbary Falcon Falco peregrinus pelegrinoides was studied from 1993 to 2008. The population increased constantly since the outset, from two pairs in 1993 to 12 in 2008. Mean density was 5.48 pairs per 100 km² and mean nearest neighbour distance was 3 119 m. The regularity of the spatial distribution pattern of the nests, observed in most years, may be maintained in the future despite ...

  17. Factores latentes del desarrollo en los municipios de la Región de Murcia.

    Directory of Open Access Journals (Sweden)

    José Alberto Hermoso Gutiérrez

    2004-01-01

    Full Text Available Un concepto de gran importancia dentro de la Economía lo constituye el desarrollo de una población, y en particular, el desarrollo económico-comercial de poblaciones. En nuestro caso, nos centraremos en los municipios de la Comunidad Autónoma de la Región de Murcia, con el fin de analizar las analogías y diferencias existentes entre ellos. En este trabajo, determinaremos factores latentes del desarrollo de los municipios de la Región de Murcia, a través de un conjunto de variables de carácter económico-comercial observadas sobre dichas poblaciones. Asimismo, analizaremos si existen diferencias de tipo económico-comercial, entre grupos homogéneos para el desarrollo, de municipios de la Comunidad Autónoma de la Región de Murcia y obtendremos una representación gráfica del posicionamiento relativo de éstos, aplicando el Análisis Canónico de Poblaciones.

  18. Monte Carlo Radiative Transfer

    CERN Document Server

    Whitney, Barbara A

    2011-01-01

    I outline methods for calculating the solution of Monte Carlo Radiative Transfer (MCRT) in scattering, absorption and emission processes of dust and gas, including polarization. I provide a bibliography of relevant papers on methods with astrophysical applications.

  19. Monte Carlo transition probabilities

    OpenAIRE

    Lucy, L. B.

    2001-01-01

    Transition probabilities governing the interaction of energy packets and matter are derived that allow Monte Carlo NLTE transfer codes to be constructed without simplifying the treatment of line formation. These probabilities are such that the Monte Carlo calculation asymptotically recovers the local emissivity of a gas in statistical equilibrium. Numerical experiments with one-point statistical equilibrium problems for Fe II and Hydrogen confirm this asymptotic behaviour. In addition, the re...

  20. El reconocimiento de los bienes de dominio público: El caso de los municipios portugueses

    Directory of Open Access Journals (Sweden)

    Susana Catarino Rua

    2016-02-01

    Full Text Available Objeto: Este trabajo tiene por objetivos analizar el mencionado en el POCAL (1999, en las NICSP del IPSASB y en diversas opiniones doctrinales con respecto al reconocimiento de los bienes de dominio público (BDP, así como verificar si existen problemas inherentes al reconocimiento de los BDP en Portugal, superables con la adopción de las NICSP. Diseño/metodología/Enfoque: Para este estudio, fue efectuada una revisión de literatura, de la posición del POCAL (1999, de las NICSP del IPSASB, y de la perspectiva doctrinal, con respecto al reconocimiento de los bienes de dominio público. Además, se realizó un estudio de la evolución de los valores de los bienes de dominio público, de los años 2006 a 2013, del total de los 308 municipios portugueses, para concluir acerca de la existencia de dificultades en el reconocimiento de estos activos y de la necesidad de adoptar los normativos internacionales. Aportaciones y Resultados: En algunos municipios portugueses, el proceso de inventario aún no está concluido, existiendo dificultades con respecto al reconocimiento de los BDP. Dichas dificultades resultan de que el POCAL (1999 no presenta los requisitos para el reconocimiento de los activos; problema superado en la NICSP nº 17 del IPSASB (2006b, que refiere esos requisitos. Adoptar un nuevo Sistema de Normalización Contable aplicable a la Administración Pública (SNC-AP, basado en las NICSP, puede ser la solución para dichas cuestiones, introduciendo criterios a considerar en el reconocimiento de los activos, que aseguren la comparabilidad de la información y de los valores del patrimonio de los municipios portugueses. Limitaciones: La inexistencia de criterios de reconocimiento a seguir por los municipios trae limitaciones al nivel de la comparabilidad de los valores de los diferentes componentes del activo presentados por los varios municipios. Valor añadido: Este trabajo nos enseña que, en Portugal, aún existen problemas con

  1. The Cortical Signature of Central Poststroke Pain: Gray Matter Decreases in Somatosensory, Insular, and Prefrontal Cortices.

    Science.gov (United States)

    Krause, T; Asseyer, S; Taskin, B; Flöel, A; Witte, A V; Mueller, K; Fiebach, J B; Villringer, K; Villringer, A; Jungehulsing, G J

    2016-01-01

    It has been proposed that cortical structural plasticity plays a crucial role in the emergence and maintenance of chronic pain. Various distinct pain syndromes have accordingly been linked to specific patterns of decreases in regional gray matter volume (GMV). However, it is not known whether central poststroke pain (CPSP) is also associated with cortical structural plasticity. To determine this, we employed T1-weighted magnetic resonance imaging at 3 T and voxel-based morphometry in 45 patients suffering from chronic subcortical sensory stroke with (n = 23) and without CPSP (n = 22), and healthy matched controls (n = 31). CPSP patients showed decreases in GMV in comparison to healthy controls, involving secondary somatosensory cortex (S2), anterior as well as posterior insular cortex, ventrolateral prefrontal and orbitofrontal cortex, temporal cortex, and nucleus accumbens. Comparing CPSP patients to nonpain patients revealed a similar but more restricted pattern of atrophy comprising S2, ventrolateral prefrontal and temporal cortex. Additionally, GMV in the ventromedial prefrontal cortex negatively correlated to pain intensity ratings. This shows for the first time that CPSP is accompanied by a unique pattern of widespread structural plasticity, which involves the sensory-discriminative areas of insular/somatosensory cortex, but also expands into prefrontal cortex and ventral striatum, where emotional aspects of pain are processed. PMID:25129889

  2. High antipredatory efficiency of insular lizards: a warning signal of excessive specimen collection?

    Directory of Open Access Journals (Sweden)

    Miguel Delibes

    Full Text Available We live-captured lizards on islands in the Gulf of California and the Baja California peninsula mainland, and compared their ability to escape predation. Contrary to expectations, endemic lizard species from uninhabited islands fled from humans earlier and more efficiently than those from peninsular mainland areas. In fact, 58.2% (n=146 of the lizards we tried to capture on the various islands escaped successfully, while this percentage was only 14.4% (n=160 on the peninsular mainland. Separate evidence (e.g., proportion of regenerated tails, low human population at the collection areas, etc. challenges several potential explanations for the higher antipredatory efficiency of insular lizards (e.g., more predation pressure on islands, habituation to humans on the peninsula, etc.. Instead, we suggest that the ability of insular lizards to avoid predators may be related to harvesting by humans, perhaps due to the value of endemic species as rare taxonomic entities. If this hypothesis is correct, predation-related behavioral changes in rare species could provide early warning signals of their over-exploitation, thus encouraging the adoption of conservation measures.

  3. High antipredatory efficiency of insular lizards: a warning signal of excessive specimen collection?

    Science.gov (United States)

    Delibes, Miguel; Blázquez, María del Carmen; Soriano, Laura; Revilla, Eloy; Godoy, José Antonio

    2011-01-01

    We live-captured lizards on islands in the Gulf of California and the Baja California peninsula mainland, and compared their ability to escape predation. Contrary to expectations, endemic lizard species from uninhabited islands fled from humans earlier and more efficiently than those from peninsular mainland areas. In fact, 58.2% (n=146) of the lizards we tried to capture on the various islands escaped successfully, while this percentage was only 14.4% (n=160) on the peninsular mainland. Separate evidence (e.g., proportion of regenerated tails, low human population at the collection areas, etc.) challenges several potential explanations for the higher antipredatory efficiency of insular lizards (e.g., more predation pressure on islands, habituation to humans on the peninsula, etc.). Instead, we suggest that the ability of insular lizards to avoid predators may be related to harvesting by humans, perhaps due to the value of endemic species as rare taxonomic entities. If this hypothesis is correct, predation-related behavioral changes in rare species could provide early warning signals of their over-exploitation, thus encouraging the adoption of conservation measures. PMID:22216244

  4. Involvement of the rostral agranular insular cortex in nicotine self-administration in rats.

    Science.gov (United States)

    Pushparaj, Abhiram; Kim, Aaron S; Musiol, Martin; Trigo, Jose M; Le Foll, Bernard

    2015-09-01

    Our prior work demonstrated the involvement of the caudal granular subregion of the insular cortex in a rat model of nicotine self-administration. Recent studies in various animal models of addiction for nicotine and other drugs have identified a role for the rostral agranular subregion (RAIC). The current research was undertaken to examine the involvement of the RAIC in a rat model of nicotine self-administration. We investigated the inactivating effects of local infusions of a γ-aminobutyric acid agonist mixture (baclofen/muscimol) into the RAIC on nicotine self-administration under a fixed-ratio 5 (FR-5) schedule and on reinstatement of nicotine seeking induced by nicotine-associated cues in rats. We also evaluated the effects of RAIC inactivation on food self-administration under an FR5 schedule as a control. Inactivation of the RAIC decreased nicotine, but not food, self-administration. RAIC inactivation also prevented the reinstatement, after extinction, of nicotine seeking induced by nicotine-associated cues. Our study indicates that the RAIC is involved in nicotine-taking and nicotine-seeking in rats. Modulating insular cortex function appears to be a promising approach for nicotine dependence treatment. PMID:25934486

  5. Intraoperative diffusion tensor imaging predicts the recovery of motor dysfunction after insular lesions

    Institute of Scientific and Technical Information of China (English)

    Jinjiang Li; Xiaolei Chen; Jiashu Zhang; Gang Zheng; Xueming Lv; Fangye Li; Shen Hu; Ting Zhang; Bainan Xu

    2013-01-01

    Insular lesions remain surgically challenging because of the need to balance aggressive resection and functional protection. Motor function deficits due to corticospinal tract injury are a common complication of surgery for lesions adjacent to the internal capsule and it is therefore essential to evaluate the corticospinal tract adjacent to the lesion. We used diffusion tensor imaging to evaluate the corticospinal tract in 89 patients with insular lobe lesions who underwent surgery in Chinese PLA General Hospital from February 2009 to May 2011. Postoperative motor function evaluation revealed that 57 patients had no changes in motor function, and 32 patients suffered motor dysfunction or aggravated motor dysfunction. Of the affected patients, 20 recovered motor function during the 6–12-month follow-up, and an additional 12 patients did not recover over more than 12 months of follow-up. Following reconstruction of the corticospinal tract, fractional anisotropy comparison demonstrated that preoperative, intraoperative and follow-up normalized fractional anisotropy in the stable group was higher than in the transient deficits group or the long-term deficits group. Compared with the transient deficits group, intraoperative normalized fractional anisotropy significantly decreased in the long-term deficits group. We conclude that intraoperative fractional anisotropy values of the corticospinal tracts can be used as a prognostic indicator of motor function outcome.

  6. Direction-dependent activation of the insular cortex during vertical and horizontal hand movements.

    Science.gov (United States)

    Rousseau, C; Fautrelle, L; Papaxanthis, C; Fadiga, L; Pozzo, T; White, O

    2016-06-14

    The planning of any motor action requires a complex multisensory processing by the brain. Gravity - immutable on Earth - has been shown to be a key input to these mechanisms. Seminal fMRI studies performed during visual perception of falling objects and self-motion demonstrated that humans represent the action of gravity in parts of the cortical vestibular system; in particular, the insular cortex and the cerebellum. However, little is known as to whether a specific neural network is engaged when processing non-visual signals relevant to gravity. We asked participants to perform vertical and horizontal hand movements without visual control, while lying in a 3T-MRI scanner. We highlighted brain regions activated in the processing of vertical movements, for which the effects of gravity changed during execution. Precisely, the left insula was activated in vertical movements and not in horizontal movements. Moreover, the network identified by contrasting vertical and horizontal movements overlapped with neural correlates previously associated to the processing of simulated self-motion and visual perception of the vertical direction. Interestingly, we found that the insular cortex activity is direction-dependent which suggests that this brain region processes the effects of gravity on the moving limbs through non-visual signals. PMID:27001175

  7. On the origin of r-1 log r terms in PPN expansions of the gravitational field from insular systems

    International Nuclear Information System (INIS)

    The aim of this paper is to support the viewpoint according to wich a suitable co-ordinate straining should be employed to get rid of r-1logr terms in PPN expansions of the gravitational field from insular systems. (C.P.)

  8. What species-specific traits make a bird a better surrogate of native species richness? A test with insular avifauna

    OpenAIRE

    Carrascal, L. M.; Cayuela, L.; Palomino, D. (Desirée); Seoane, Javier

    2012-01-01

    This is an electronic version of an article published in Biological Conservation. Carrascal, L.M. et al. What species-specific traits make a bird a better surrogate of native species richness? A test with insular avifauna. Biological Conservation 152 (2012): 204-211

  9. CERN honours Carlo Rubbia

    CERN Multimedia

    2009-01-01

    Carlo Rubbia turned 75 on March 31, and CERN held a symposium to mark his birthday and pay tribute to his impressive contribution to both CERN and science. Carlo Rubbia, 4th from right, together with the speakers at the symposium.On 7 April CERN hosted a celebration marking Carlo Rubbia’s 75th birthday and 25 years since he was awarded the Nobel Prize for Physics. "Today we will celebrate 100 years of Carlo Rubbia" joked CERN’s Director-General, Rolf Heuer in his opening speech, "75 years of his age and 25 years of the Nobel Prize." Rubbia received the Nobel Prize along with Simon van der Meer for contributions to the discovery of the W and Z bosons, carriers of the weak interaction. During the symposium, which was held in the Main Auditorium, several eminent speakers gave lectures on areas of science to which Carlo Rubbia made decisive contributions. Among those who spoke were Michel Spiro, Director of the French National Insti...

  10. Insular ecosystems of the southeastern United States- A regional synthesis to support biodiversity conservation in a changing climate

    Science.gov (United States)

    Cartwright, Jennifer M.; Wolfe, William J.

    2016-01-01

    In the southeastern United States, insular ecosystems—such as rock outcrops, depression wetlands, high-elevation balds, flood-scoured riparian corridors, and insular prairies and barrens—occupy a small fraction of land area but constitute an important source of regional and global biodiversity, including concentrations of rare and endemic plant taxa. Maintenance of this biodiversity depends upon regimes of abiotic stress and disturbance, incorporating factors such as soil surface temperature, widely fluctuating hydrologic conditions, fires, flood scouring, and episodic droughts that may be subject to alteration by climate change. Over several decades, numerous localized, site-level investigations have yielded important information about the floristics, physical environments, and ecological dynamics of these insular ecosystems; however, the literature from these investigations has generally remained fragmented. This report consists of literature syntheses for eight categories of insular ecosystems of the southeastern United States, concerning (1) physical geography, (2) ecological determinants of community structures including vegetation dynamics and regimes of abiotic stress and disturbance, (3) contributions to regional and global biodiversity, (4) historical and current anthropogenic threats and conservation approaches, and (5) key knowledge gaps relevant to conservation, particularly in terms of climate-change effects on biodiversity. This regional synthesis was undertaken to discern patterns across ecosystems, identify knowledge gaps, and lay the groundwork for future analyses of climate-change vulnerability. Findings from this synthesis indicate that, despite their importance to regional and global biodiversity, insular ecosystems of the southeastern United States have been subjected to a variety of direct and indirect human alterations. In many cases, important questions remain concerning key determinants of ecosystem function. In particular, few

  11. Late Miocene insular mice from the Tusco-Sardinian palaeobioprovince provide new insights on the palaeoecology of the Oreopithecus faunas.

    Science.gov (United States)

    Casanovas-Vilar, Isaac; van Dam, Jan A; Moyà-Solà, Salvador; Rook, Lorenzo

    2011-07-01

    Oreopithecus bambolii is one of the few hominoids that evolved under insular conditions, resulting in the development of unique adaptations that have fueled an intensive debate. The palaeoenvironment associated with this great ape has been the subject of great controversy as well. On the one hand, palaeobotanical data indicate that Oreopithecus likely inhabited mixed mesophytic forests interrupted by swamps; on the other hand, an abundance of hypsodont bovids points towards the existence of dry and open environments. Here, we provide a new approach based on the ecomorphology of the extinct endemic Muridae (rats and mice) of the so-called Oreopithecus faunas. Our results show that the successive species of endemic insular murids (Huerzelerimys and Anthracomys) evolved a number of adaptations observed only in extant family members that include significant proportions of grass in their diet. While this fits the pattern exhibited by large mammals, it contrasts with the available palaeobotanical information, which indicates that grasses were minor components of the vegetation. This contradiction may be explained because these endemic murids may have been adapted to the consumption of particular food items such as hard parts of aquatic plants (as shown by some extant murid species). However, because it is unlikely that the remaining herbivore mammals were adapted to this diet as well, we favour an alternative hypothesis that takes into account the peculiar ecological conditions of insular ecosystems leading to a density-dependent selective regime with strong competition. Such a regime would promote the selection of dental adaptations to increase feeding efficiency and durability of the dentition (such as hypsodonty) as seen in some fossil insular ruminants. This hypothesis requires further testing, but may partly account for parallel evolution of dental traits in phylogenetically unrelated insular mammals. PMID:21371736

  12. Mezcla de promoción para la comercialización de municipios turísticos. Estudio de caso en el municipio Gibara del destino Holguín/Cuba. Un acercamiento desde La Habana Vieja

    OpenAIRE

    Litzandra Guerrero Arias; María de los Ángeles Arias Guevara

    2013-01-01

    El presente texto constituye un estudio de caso sobre Gibara, uno de los municipios de la provincia Holguín, de Cuba, que cuenta con numerosos y atractivos recursos insuficientemente explotados. Desde el punto de vista teórico se apoya en el Marketing Turístico como una opción ineludible para alcanzar importantes niveles de preferencia entre los consumidores y tiene como objetivo diseñar la mezcla de promoción comercial para Gibara como municipio turístico. Dentro de la investigación se utili...

  13. Financiamiento del sector industrial de las MIPYMES en el municipio de Sincelejo

    OpenAIRE

    Salas Quintana, Heberto

    2015-01-01

    En este artículo se reportan los resultados de una investigación que tuvo como objetivo analizarlas fuentes de financiamiento utilizadas por las Mipymes del sector industrial del municipio de Sincelejo con el fin de caracterizar determinantes claves en su funcionamiento. La muestra la conformaron 208 empresarios a los cuales se les aplicó un cuestionario escala tipo Liker. La confiabilidad del cuestionario se hizo con el índice alfa de Cronbach, y para procesar la información s...

  14. Herramienta para la estratificación de municipios en zonas de riesgo para la salud

    OpenAIRE

    López Caviedes, Marco Antonio

    2004-01-01

    El programa "Atención Integral" de los Servicios de Salud de Hidalgo (SSH) está enfocado a reducir los niveles de enfermedad de las diferentes localidades que integran al Estado de Hidalgo, con un presupuesto autorizado limitado. Para realizar este trabajo, se determinaron cuáles de los 84 municipios que conforman el Estado de Hidalgo presentan los mayores índices de rezago en atención a la salud, carencia de recursos y marginalidad. Obteniendo una estructuración (agrupamiento) en cuatro zona...

  15. Gasto no obligatorio de los municipios. Una muestra de ayuntamientos valencianos

    OpenAIRE

    Margareto Layunta, Leonardo

    2015-01-01

    El Ayuntamiento es la institución de Gobierno que mayores presiones recibe, al ser la más accesible para los ciudadanos, como instancia de poder más próxima y los municipios, por su parte, intentan responder a esa presión financiando una serie de gastos que no recogen como obligatorios ni la Ley Reguladora de las Bases del Régimen Local (LBRL), aprobada en 2005 , ni el resto de leyes que abordan esta cuestión. La legislación vigente establece cuáles son las obligaciones que deben atende...

  16. El envejecimiento en los municipios rurales del País Valenciano

    OpenAIRE

    Gozálvez Pérez, Vicente

    1987-01-01

    En términos generales, la corriente inmigratoria experimentada en el País Valenciano entre 1961-1981 no ha supuesto el rejuvenecimiento absoluto del censo total. Las personas de 65 y más años han continuado aumentando, aunque haya habido una pausa en el proceso de envejecimiento. Por otra parte, las migraciones interiores han sido muy importantes en este mismo período y han intensificado profundamente el envejecimiento de los municipios rurales valencianos.

  17. Balanced scorecard en las empresas mixtas petroleras del municipio Maracaibo del estado Zulia

    OpenAIRE

    Alvaro Finali; Linda Chacín

    2014-01-01

    La presente investigación, tuvo como objetivo identificar las perspectivas basadas en el enfoque del Balanced Scorecard en las empresas mixtas petroleras del municipio Maracaibo del estado Zulia. El sustento teórico utilizado para el estudio, se enmarcó en los aportes realizados por Caycho (2010), Kaplan y Norton, (2004), López (2001), Muñiz y Monfort (2005), Niven (2003), Pérez (2003), Rampersad (2005), Solano et al (2002), entre otros. El presente estudio es de tipo descriptivo, de campo, n...

  18. Plan de Acción Inmediato-PAI para el municipio de Marmato 2010

    OpenAIRE

    Duque Escobar, Gonzalo; Ramírez, Alexander; Ortiz Ortiz, Doralice; Dunoyer Mejía, Mónica

    2010-01-01

    El Plan de Acción Inmediato gestionado por Corpocaldas como estrategia para la aplicación de acciones emblemáticas coordinadas, por parte de los actores de un territorio, resulta ser una medida facilitadora para la autogestión y coordinación de recursos que formen sinergias alrededor de un objetivo común: el mejoramiento de las condiciones socio-ambientales del municipio de Marmato ante un eventual reasentamiento. El presente documento que parte de los estudios de diagnóstico existentes, desa...

  19. INFECCIONES DE TRANSMISIÓN SEXUAL EN ADOLESCENTES. MUNICIPIO CÉSPEDES

    OpenAIRE

    Marco Rodríguez Betancourt; Marisel Cedeño Donet; Dayamí Peraza Morelle; Reina Peraza Morelle

    2004-01-01

    Se realizó un estudio descriptivo y transversal sobre el comportamiento de las infecciones de transmisión sexual en las adolescentes del municipio Céspedes, desde enero del 2000 hasta septiembre del 2002. Se utilizaron las encuestas epidemiológicas del departamento de control de enfermedades transmisibles. De los 80 pacientes encuestados, 34 eran adolescentes (42.5 %), el 58.8 % pertenecía al sexo femenino, el 26.4 % tenía 17 años, pero un 17.7 % de 12-14 años; el total de los jóvenes comenzó...

  20. Calidad de vida y el desarrollo institucional de los municipios petroleros de Colombia (2000-2010)

    OpenAIRE

    Diana Patricia Niño Muñoz

    2015-01-01

    Los recursos naturales pueden ser una maldición para el desarrollo humano dependiendo de las instituciones. Para determinar si un declive institucional y el deterioro de la calidad de vida se presentan en forma independiente en los municipios petroleros del país se construyeron dos índices para el periodo 2000-2010. Los resultados sugieren que hay un umbral institucional, por encima del cual la relación entre regalías per cápita y calidad institucional es negativa, una situación necesaria per...

  1. La participacion femenina en el programa integral de Deporte Escolar del municipio de Segovia

    OpenAIRE

    Escudero Valenzuela, José A.

    2012-01-01

    La investigación tiene como principal objetivo analizar la participación de las chicas inscritas en el Programa Integral de Deporte Escolar del municipio de Segovia Hemos realizado una revisión una revisión sobre los antecedentes que nos sitúan y contextualizan el PIDEMSG apoyado por la revisión bibliográfica correspondiente. Se ha realizado un estudio de casos; utilizando la entrevista, la observación y el cuaderno de investigación como principales técnicas de recogida de datos. El ...

  2. Talento humano y trabajo en equipo del personal directivo de las universidades del municipio Maracaibo

    OpenAIRE

    Maribel Medina Fuenmayor

    2010-01-01

    El propósito de esta investigación fue determinar la relación entre talento humano y trabajo en equipo del personal directivo de las universidades del Municipio Maracaibo, sobre la base de los enfoques teóricos de Alles (2005), Dolan et al. (2003), Gubman (2000), Hayes (2002), Jericó (2001), entre otros. La investigación se tipificó como correlacional, no experimental y transversal, utilizando una población de 31 sujetos pertenecientes a la planta directiva de administración de las referidas ...

  3. Calidad en la atención al cliente en las Pymes del municipio de Arauca

    OpenAIRE

    Soto Soto, Adriana Del Pilar

    2013-01-01

    El presente estudio, muestra como las pymes del municipio de Arauca orientan la calidad del servicio al cliente y como la existencia de factores internos que están bajo la orientación de la gerencia, ocasionan que las expectativas de los clientes sean mayores que sus percepciones. Lo poca planificación estratégica, la falta de liderazgo empresarial y la cultura inciden de forma negativa en los procesos de calidad que las empresas deben lograr para tener niveles altos de satisfacción de los...

  4. Insular Cortex is Critical for the Perception, Modulation, and Chronification of Pain.

    Science.gov (United States)

    Lu, Changbo; Yang, Tao; Zhao, Huan; Zhang, Ming; Meng, Fancheng; Fu, Hao; Xie, Yingli; Xu, Hui

    2016-04-01

    An increasing body of neuroimaging and electrophysiological studies of the brain suggest that the insular cortex (IC) integrates multimodal salient information ranging from sensation to cognitive-affective events to create conscious interoception. Especially with regard to pain experience, the IC has been supposed to participate in both sensory-discriminative and affective-motivational aspects of pain. In this review, we discuss the latest data proposing that subregions of the IC are involved in isolated pain networks: the posterior sensory circuit and the anterior emotional network. Due to abundant connections with other brain areas, the IC is likely to serve as an interface where cross-modal shaping of pain occurs. In chronic pain, however, this mode of emotional awareness and the modulation of pain are disrupted. We highlight some of the molecular mechanisms underlying the changes of the pain modulation system that contribute to the transition from acute to chronic pain in the IC. PMID:26898298

  5. Introductions do not compensate for functional and phylogenetic losses following extinctions in insular bird assemblages.

    Science.gov (United States)

    Sobral, Fernando L; Lees, Alexander C; Cianciaruso, Marcus V

    2016-09-01

    The ratio of species extinctions to introductions has been comparable for many insular assemblages, suggesting that introductions could have 'compensated' for extinctions. However, the capacity for introduced species to replace ecological roles and evolutionary history lost following extinction is unclear. We investigated changes in bird functional and phylogenetic diversity in the wake of extinctions and introductions across a sample of 32 islands worldwide. We found that extinct and introduced species have comparable functional and phylogenetic alpha diversity. However, this was distributed at different positions in functional space and in the phylogeny, indicating a 'false compensation'. Introduced and extinct species did not have equivalent functional roles nor belong to similar lineages. This makes it unlikely that novel island biotas composed of introduced taxa will be able to maintain ecological roles and represent the evolutionary histories of pre-disturbance assemblages and highlights the importance of evaluating changes in alpha and beta diversity concurrently. PMID:27353518

  6. Reduction of brain and sense organs in the fossil insular bovid Myotragus.

    Science.gov (United States)

    Köhler, Meike; Moyà-Solà, Salvador

    2004-01-01

    Our study of the fossil rupicaprine bovid Myotragus [Bate, 1909] from the Mediterranean island Majorca (Spain) provides evidence that this animal underwent significant changes (reduction) in the relative size of brain and sense organs after geographic isolation at the end of the Messinian Salinity Crisis (Miocene-Pliocene boundary, 5.2 Mya). The changes in the central nervous system of Myotragus parallel the pattern reported for domesticated animals, in which decrease in relative brain size is accompanied by a decrease in the relative size of their sense organs. We interpret the important size reduction of brain and sense organs in Myotragus as an adaptive strategy for more efficient energy use under the special environmental conditions of the insular ecosystem, characterized by absence of predation and limitation of trophic resources. PMID:14726622

  7. The insular cortex controls food preferences independently of taste receptor signaling

    Directory of Open Access Journals (Sweden)

    Albino J Oliveira-Maia

    2012-03-01

    Full Text Available The insular cortex (IC contains the primary sensory cortex for oral chemosensation including gustation, and its integrity is required for appropriate control of feeding behavior. However, it remains unknown whether the role of this brain area in food selection relies on the presence of peripheral taste input. Using multielectrode recordings, we found that the responses of populations of neurons in the IC of freely licking, sweet-blind Trpm5-/- mice are modulated by the rewarding postingestive effects of sucrose. FOS immunoreactivity analyses revealed that these responses are restricted to the dorsal insula. Furthermore, bilateral lesions in this area abolished taste-independent preferences for sucrose that can be conditioned in these Trpm5-/- animals while preserving their ability to detect sucrose. Overall, these findings demonstrate that even in the absence of peripheral taste input, IC regulates food choices based on postingestive signals.

  8. Hospital acquired pneumonia is linked to right hemispheric peri-insular stroke.

    Directory of Open Access Journals (Sweden)

    André Kemmling

    Full Text Available PURPOSE: Hospital acquired pneumonia (HAP is a major complication of stroke. We sought to determine associations between infarction of specific brain regions and HAP. METHODS: 215 consecutive acute stroke patients with HAP (2003-2009 were carefully matched with 215 non-pneumonia controls by gender, then NIHSS, then age. Admission imaging and binary masks of infarction were registered to MNI-152 space. Regional atlas and voxel-based log-odds were calculated to assess the relationship between infarct location and the likelihood of HAP. An independently validated penalized conditional logistic regression model was used to identify HAP associated imaging regions. RESULTS: The HAP and control patients were well matched by gender (100%, age (95% within 5-years, NIHSS (98% within 1-point, infarct size, dysphagia, and six other clinical variables. Right hemispheric infarcts were more frequent in patients with HAP versus controls (43.3% vs. 34.0%, p = 0.054, whereas left hemispheric infarcts were more frequent in controls (56.7% vs. 44.7%, p = 0.012; there was no significant difference between groups in the rate of brainstem strokes (p = 1.0. Of the 10 most infarcted regions, only right insular cortex volume was different in HAP versus controls (20 vs. 12 ml, p = 0.02. In univariate analyses, the highest log-odds regions for pneumonia were right hemisphere, cerebellum, and brainstem. The best performing multivariate model selected 7 brain regions of infarction and 2 infarct volume-based variables independently associated with HAP. CONCLUSIONS: HAP is associated with right hemispheric peri-insular stroke. These associations may be related to autonomic modulation of immune mechanisms, supporting recent hypotheses of stroke mediated immune suppression.

  9. Parental Praise Correlates with Posterior Insular Cortex Gray Matter Volume in Children and Adolescents

    Science.gov (United States)

    Matsudaira, Izumi; Yokota, Susumu; Hashimoto, Teruo; Takeuchi, Hikaru; Asano, Kohei; Asano, Michiko; Sassa, Yuko; Taki, Yasuyuki; Kawashima, Ryuta

    2016-01-01

    A positive parenting style affects psychological and cognitive development in children. Neuroimaging studies revealed that a positive parenting style influenced brain structure in children. Parental praise is a concrete behavior observed in positive parenting. Although previous psychological studies revealed a positive effect of parental praise on children, little is known about the relationship between parental praise and brain structure in children. Thus, the purpose of the present study was to determine whether there was a correlation between the parental attitude towards praising their child and gray matter volume in the children (116 boys and 109 girls; mean age, 10.6 years old). We examined the correlation between regional gray matter volume and parental praise using voxel-based morphometry (VBM) following magnetic resonance imaging (MRI). In addition, to confirm the positive effects of parental praise, we analyzed the correlation between the frequency of parental praise and personality traits in children. We showed that the parental attitude towards praising their child was significantly and positively correlated with the gray matter volume of the left posterior insular cortex in children. Moreover, we found a significant positive correlation between parental attitude towards praising their child and the personality traits of conscientiousness and openness to experience in the children. Prior studies said that gray matter volume in the posterior insula was correlated with empathy, and the functional connectivity between this area and the amygdala was associated with emotional regulation. Furthermore, the posterior insula relates to auditory function, and therefore, was likely involved in the processing of parental praise. Considering the possibility of experience-dependent plasticity, frequent parental praise would lead to increased posterior insular gray matter volume in children. Our study is the first to elucidate the relationship between a specific

  10. Designing an Information System for the Preservation of the Insular Tropical Environment of Reunion Island

    Science.gov (United States)

    Conruyt, Noël; Sébastien, Didier; Courdier, Rémy; David, Daniel; Sébastien, Nicolas; Ralambondrainy, Tiana

    Decision-makers who wish to manage Insular Tropical Environments more efficiently need to narrow the gap between the production of scientific knowledge in universities, or other labs, and its pragmatic use by the general public and administrations. Today, one of the main challenges concerning the environment is the preservation of the biodiversity of ecosystems that suffer from urban and agricultural pressure. As we can only protect what we know, it is all the more important to share expert knowledge about habitats and species by using Internet in order to educate the public about their wealth and beauty. Based on Reunion Island, and taking into consideration an expected population growth of over 30% in the next twenty years, we are working to predict the human impact on this closed territory. To help tackle these two questions about biodiversity and land consumption, we have designed an Information System (IS) in the framework of the ETIC program. Our aim is to enhance insular tropical environment research in order to help the Reunion National Park to manage its protected territory. On the one hand, biodiversity research is handled statically, using knowledge bases and databases, to enhance Systematics and ecological university research. On the other hand, spatial planning concerns are treated dynamically, using multi-agent systems to simulate population densification movements. These software technologies have been implemented and integrated through a common architectural system in the ETIC program. They were conceived using Web Services that allow each module to communicate its functionalities and information with one another, as well as with external systems.

  11. Parental Praise Correlates with Posterior Insular Cortex Gray Matter Volume in Children and Adolescents.

    Science.gov (United States)

    Matsudaira, Izumi; Yokota, Susumu; Hashimoto, Teruo; Takeuchi, Hikaru; Asano, Kohei; Asano, Michiko; Sassa, Yuko; Taki, Yasuyuki; Kawashima, Ryuta

    2016-01-01

    A positive parenting style affects psychological and cognitive development in children. Neuroimaging studies revealed that a positive parenting style influenced brain structure in children. Parental praise is a concrete behavior observed in positive parenting. Although previous psychological studies revealed a positive effect of parental praise on children, little is known about the relationship between parental praise and brain structure in children. Thus, the purpose of the present study was to determine whether there was a correlation between the parental attitude towards praising their child and gray matter volume in the children (116 boys and 109 girls; mean age, 10.6 years old). We examined the correlation between regional gray matter volume and parental praise using voxel-based morphometry (VBM) following magnetic resonance imaging (MRI). In addition, to confirm the positive effects of parental praise, we analyzed the correlation between the frequency of parental praise and personality traits in children. We showed that the parental attitude towards praising their child was significantly and positively correlated with the gray matter volume of the left posterior insular cortex in children. Moreover, we found a significant positive correlation between parental attitude towards praising their child and the personality traits of conscientiousness and openness to experience in the children. Prior studies said that gray matter volume in the posterior insula was correlated with empathy, and the functional connectivity between this area and the amygdala was associated with emotional regulation. Furthermore, the posterior insula relates to auditory function, and therefore, was likely involved in the processing of parental praise. Considering the possibility of experience-dependent plasticity, frequent parental praise would lead to increased posterior insular gray matter volume in children. Our study is the first to elucidate the relationship between a specific

  12. Educación y desarrollo en un municipio rural: el caso de Pauna en Boyacá

    OpenAIRE

    Barrera Pineda, Libia Isabel

    2013-01-01

    En esta investigación se acude al estudio de caso de Pauna (Boyacá) para analizar la pertinencia de la oferta educativa del nivel medio de educación con las necesidades y expectativas formativas, laborales y/u ocupacionales de los jóvenes y las necesidades para el desarrollo del municipio al que pertenecen. Los principales resultados de esta investigación permiten establecer que el servicio educativo de este municipio no solo no es pertinente con lo que los jóvenes desean hacer en un escenari...

  13. Diagnóstico Ambiental Asociado almanejo de residuos sólidos urbanos en el Municipio de Arauca

    OpenAIRE

    Salamanca Corredor, Luis Ernesto

    2005-01-01

    El manejo de Residuos Sólidos en la actualidad en Arauca Municipio, esta siendo muy cuestionado, razón por la cual se hace indispensable la utilización de herramientas con las cuales permitan realizar una evaluación e una manera clara , sencilla y vislumbrando la realidad en todos sus ámbitos. El presente trabajo consistente en un diagnostico permitirá evaluar la situación actual del Manejo de Residuos Sólidos Urbanos en el Municipio de Arauca, teniendo en cuenta aspectos importantes como ...

  14. Riesgo Familiar Total y Grado de Salud Familiar, Familias Desplazadas Residentes en el Municipio de Bugalagrande, Valle del Cauca

    OpenAIRE

    Soto González, Ana María

    2014-01-01

    OBJETIVO: determinar el riesgo familiar total y el grado de salud familiar de las familias desplazadas residentes en el municipio de Bugalagrande, Valle del Cauca. MATERIALES Y MÉTODOS: Es un estudio de tipo descriptivo transversal con abordaje cuantitativo, que permite identificar el Riesgo familiar total y grado de salud familiar, la muestra estuvo conformada por 59 familias desplazadas residentes en el área urbana del municipio, de estrato socio-económico 1, 2, 3, que aceptaron de manera v...

  15. Fundamentals of Monte Carlo

    Energy Technology Data Exchange (ETDEWEB)

    Wollaber, Allan Benton [Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

    2016-06-16

    This is a powerpoint which serves as lecture material for the Parallel Computing summer school. It goes over the fundamentals of Monte Carlo. Welcome to Los Alamos, the birthplace of “Monte Carlo” for computational physics. Stanislaw Ulam, John von Neumann, and Nicholas Metropolis are credited as the founders of modern Monte Carlo methods. The name “Monte Carlo” was chosen in reference to the Monte Carlo Casino in Monaco (purportedly a place where Ulam’s uncle went to gamble). The central idea (for us) – to use computer-generated “random” numbers to determine expected values or estimate equation solutions – has since spread to many fields. "The first thoughts and attempts I made to practice [the Monte Carlo Method] were suggested by a question which occurred to me in 1946 as I was convalescing from an illness and playing solitaires. The question was what are the chances that a Canfield solitaire laid out with 52 cards will come out successfully? After spending a lot of time trying to estimate them by pure combinatorial calculations, I wondered whether a more practical method than “abstract thinking” might not be to lay it out say one hundred times and simply observe and count the number of successful plays... Later [in 1946], I described the idea to John von Neumann, and we began to plan actual calculations." - Stanislaw Ulam.

  16. Carlo Caso (1940 - 2007)

    CERN Multimedia

    Leonardo Rossi

    Carlo Caso (1940 - 2007) Our friend and colleague Carlo Caso passed away on July 7th, after several months of courageous fight against cancer. Carlo spent most of his scientific career at CERN, taking an active part in the experimental programme of the laboratory. His long and fruitful involvement in particle physics started in the sixties, in the Genoa group led by G. Tomasini. He then made several experiments using the CERN liquid hydrogen bubble chambers -first the 2000HBC and later BEBC- to study various facets of the production and decay of meson and baryon resonances. He later made his own group and joined the NA27 Collaboration to exploit the EHS Spectrometer with a rapid cycling bubble chamber as vertex detector. Amongst their many achievements, they were the first to measure, with excellent precision, the lifetime of the charmed D mesons. At the start of the LEP era, Carlo and his group moved to the DELPHI experiment, participating in the construction and running of the HPC electromagnetic c...

  17. Corticotrigeminal projections from the insular cortex to the trigeminal caudal subnucleus regulate orofacial pain after nerve injury via extracellular signal-regulated kinase activation in insular cortex neurons

    Directory of Open Access Journals (Sweden)

    Jian eWang

    2015-12-01

    Full Text Available Cortical neuroplasticity alterations are implicated in the pathophysiology of chronic orofacial pain. However, the relationship between critical cortex excitability and orofacial pain maintenance has not been fully elucidated. We recently demonstrated a top-down corticospinal descending pain modulation pathway from the anterior cingulate cortex (ACC to the spinal dorsal horn that could directly regulate nociceptive transmission. Thus, we aimed to investigate possible corticotrigeminal connections that directly influence orofacial nociception in rats. Infraorbital nerve chronic constriction injury (IoN-CCI induced significant orofacial nociceptive behaviors as well as pain-related negative emotions such as anxiety/depression in rats. By combining retrograde and anterograde tract tracing, we found powerful evidence that the trigeminal caudal subnucleus (Vc, especially the superficial laminae (I/II, received direct descending projections from granular and dysgranular parts of the insular cortex (IC. Extracellular signal-regulated kinase (ERK, an important signaling molecule involved in neuroplasticity, was significantly activated in the IC following IoN-CCI. Moreover, in IC slices from IoN-CCI rats, U0126, an inhibitor of ERK activation, decreased both the amplitude and the frequency of spontaneous excitatory postsynaptic currents (sEPSCs and reduced the paired-pulse ratio (PPR of Vc-projecting neurons. Additionally, U0126 also reduced the number of action potentials in the Vc-projecting neurons. Finally, intra-IC infusion of U0126 obviously decreased Fos expression in the Vc, accompanied by the alleviation of both nociceptive behavior and negative emotions. Thus, the corticotrigeminal descending pathway from the IC to the Vc could directly regulate orofacial pain, and ERK deactivation in the IC could effectively alleviate neuropathic pain as well as pain-related negative emotions in IoN-CCI rats, probably through this top-down pathway. These

  18. Responsabilidad social en las universidades del municipio Maracaibo del estado Zulia

    Directory of Open Access Journals (Sweden)

    Mary Urdaneta

    2016-01-01

    Full Text Available La responsabilidad social es una temática que en los últimos años ha alcanzado notoriedad en las Instituciones de Educación Superior. El propósito de esta investigación es analizar la responsabilidad social en las universidades del municipio Maracaibo, estado Zulia (Venezuela. Se trató de una investigación analítica, con diseño no experimental de fuente mixta. La población estuvo conformada por siete (7 universidades públicas y privadas ubicadas en el municipio Maracaibo. Se diseñaron cinco instrumentos para medir responsabilidad social, considerando el enfoque teórico propuesto por Vallaeys (2007, 2008 y 2011, que incluye las políticas de responsabilidad social, docencia, gestión interna, investigación y extensión. Los resultados arrojaron que las universidades tienen diseñadas políticas de responsabilidad social, las cuales deben ser reforzadas y difundidas entre la comunidad universitaria. Mantienen un enfoque parcial de aplicación de esas políticas, al realizar su acción social a través de la extensión. La responsabilidad social en las Instituciones de Educación Superior debe ser implementada en sus cuatro procesos medulares: docencia, investigación, extensión y gestión interna.

  19. Isolated insular strokes and plasma MR-proANP levels are associated with newly diagnosed atrial fibrillation: a pilot study.

    Directory of Open Access Journals (Sweden)

    Karl Frontzek

    Full Text Available INTRODUCTION: In this study, we assessed the relationship of insular strokes and plasma MR-proANP levels with newly diagnosed atrial fibrillation (NDAF. METHODS: This study is based on a prospective acute stroke cohort (http://www.clinicaltrials.gov, NCT00390962. Patient eligibility was dependent on the diagnosis of acute ischemic stroke, absence of previous stroke based on past medical history and MRI, no history of AF and congestive heart failure (cohort A and, additionally, no stroke lesion size ≥ 20 mL (sub-cohort A*. AF, the primary endpoint, was detected on 24-hour electrocardiography and/or echocardiography. Involvement of the insula was assessed by two experienced readers on MRI blinded to clinical data. MR-proANP levels were obtained through a novel sandwich immunoassay. Logistic-regression-models were fitted to estimate odds ratios for the association of insular strokes and MR-proANP with NDAF. The discriminatory accuracy of insular strokes and MR-proANP was assessed by a model-wise comparison of the area under the receiver-operating-characteristics-curve (AUC with known predictors of AF. RESULTS: 104 (cohort A and 83 (cohort A* patients fulfilled above-mentioned criteria. Patients with isolated insular strokes had a 10.7-fold higher odds of NDAF than patients with a small ischemic stroke at any other location. The AUC of multivariate logistic regression models for the prediction of NDAF improved significantly when adding stroke location and MR-proANP levels. Moreover, MR-proANP levels remained significantly elevated throughout the acute hospitalization period in patients with NDAF compared to those without. CONCLUSIONS: Isolated insular strokes and plasma MR-proANP levels on admission are independent predictors of NDAF and significantly improve the prediction accuracy of identifying patients with NDAF compared to known predictors including age, the NIHSS and lesion size. To accelerate accurate diagnosis and enhance secondary

  20. Environmental drivers of megafaunal assemblage composition and biomass distribution over mainland and insular slopes of the Balearic Basin (Western Mediterranean)

    Science.gov (United States)

    Fanelli, E.; Cartes, J. E.; Papiol, V.; López-Pérez, C.

    2013-08-01

    The influence of mesoscale physical and trophic variables on deep-sea megafauna, a scale of variation often neglected in deep-sea studies, is crucial for understanding their role in the ecosystem. Drivers of megafaunal assemblage composition and biomass distribution have been investigated in two contrasting areas of the Balearic basin in the NW Mediterranean: on the mainland slope (Catalonian coasts) and on the insular slope (North of Mallorca, Balearic Islands). An experimental bottom trawl survey was carried out during summer 2010, at stations in both sub-areas located between 450 and 2200 m water depth. Environmental data were collected simultaneously: near-bottom physical parameters, and the elemental and isotopic composition of sediments. Initially, data were analysed along the whole depth gradient, and then assemblages from the two areas were compared. Analysis of the trawls showed the existence of one group associated with the upper slope (US=450-690 m), another with the middle slope (MS=1000-1300 m) and a third with the lower slope (LS=1400-2200 m). Also, significant differences in the assemblage composition were found between mainland and insular slopes at MS. Dominance by different species was evident when the two areas were compared by SIMPER analysis. The greatest fish biomass was recorded in both areas at 1000-1300 m, a zone linked to minimum temperature and maximum O2 concentration on the bottom. Near the mainland, fish assemblages were best explained (43% of total variance, DISTLM analysis) by prey availability (gelatinous zooplankton biomass). On the insular slope, trophic webs seemed less complex and were based on vertical input of surface primary production. Decapods, which reached their highest biomass values on the upper slope, were correlated with salinity and temperature in both the areas. However, while hydrographic conditions (temperature and salinity) seemed to be the most important variables over the insular slope, resource availability

  1. Monte Carlo photon benchmark problems

    International Nuclear Information System (INIS)

    Photon benchmark calculations have been performed to validate the MCNP Monte Carlo computer code. These are compared to both the COG Monte Carlo computer code and either experimental or analytic results. The calculated solutions indicate that the Monte Carlo method, and MCNP and COG in particular, can accurately model a wide range of physical problems. 8 refs., 5 figs

  2. The Human Operculo-Insular Cortex Is Pain-Preferentially but Not Pain-Exclusively Activated by Trigeminal and Olfactory Stimuli

    OpenAIRE

    Lötsch, Jörn; Walter, Carmen; Felden, Lisa; Nöth, Ulrike; Deichmann, Ralf; Oertel, Bruno Georg

    2012-01-01

    Increasing evidence about the central nervous representation of pain in the brain suggests that the operculo-insular cortex is a crucial part of the pain matrix. The pain-specificity of a brain region may be tested by administering nociceptive stimuli while controlling for unspecific activations by administering non-nociceptive stimuli. We applied this paradigm to nasal chemosensation, delivering trigeminal or olfactory stimuli, to verify the pain-specificity of the operculo-insular cortex. I...

  3. Differential Involvement of the Agranular vs Granular Insular Cortex in the Acquisition and Performance of Choice Behavior in a Rodent Gambling Task

    OpenAIRE

    Pushparaj, Abhiram; Kim, Aaron S; Musiol, Martin; Zangen, Abraham; Daskalakis, Zafiris J.; Zack, Martin; Winstanley, Catharine A.; Le Foll, Bernard

    2015-01-01

    Substance-related and addictive disorders, in particular gambling disorder, are known to be associated with risky decision-making behavior. Several neuroimaging studies have identified the involvement of the insular cortex in decision-making under risk. However, the extent of this involvement remains unclear and the specific contributions of two distinct insular subregions, the rostral agranular (RAIC) and the caudal granular (CGIC), have yet to be examined. Animals were trained to perform a ...

  4. Who Writes Carlos Bulosan?

    OpenAIRE

    Charlie Samuya Veric

    2001-01-01

    The importance of Carlos Bulosan in Filipino and Filipino-American radical history and literature is indisputable. His eminence spans the pacific, and he is known, diversely, as a radical poet, fictionist, novelist, and labor organizer. Author of the canonical America Iis the Hearts, Bulosan is celebrated for chronicling the conditions in America in his time, such as racism and unemployment. In the history of criticism on Bulosan's life and work, however, there is an undeclared general consen...

  5. Fundamentals of Monte Carlo

    Energy Technology Data Exchange (ETDEWEB)

    Wollaber, Allan Benton [Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

    2016-06-16

    This is a powerpoint presentation which serves as lecture material for the Parallel Computing summer school. It goes over the fundamentals of the Monte Carlo calculation method. The material is presented according to the following outline: Introduction (background, a simple example: estimating π), Why does this even work? (The Law of Large Numbers, The Central Limit Theorem), How to sample (inverse transform sampling, rejection), and An example from particle transport.

  6. Contributon Monte Carlo

    International Nuclear Information System (INIS)

    The contributon Monte Carlo method is based on a new recipe to calculate target responses by means of volume integral of the contributon current in a region between the source and the detector. A comprehensive description of the method, its implementation in the general-purpose MCNP code, and results of the method for realistic nonhomogeneous, energy-dependent problems are presented. 23 figures, 10 tables

  7. Vivir en riesgo, dormir seguro: Participa en las actividades de prevención de desastres de tu municipio

    OpenAIRE

    Banco Interamericano de Desarrollo (BID)

    2006-01-01

    Este folleto presenta las actividades de prevención de desastres en las ciudades de Estelí (Nicaragua), La Mancomunidad de Municipios del Centro del Departamento de Atlántida (Honduras), Managua (Nicaragua), San Salvador (El Salvador) y San Pedro Sula (Honduras).

  8. Implantación de red pública Wi-Fi en el municipio de Begur

    OpenAIRE

    Fernández Nevado, Raúl

    2013-01-01

    El proyecto contempla la instalación de una red WiFi de uso público para el municipio ampurdanés de Begur. Se ha empleado tecnología Radwin, Aruba, Netgear y Fortinet y software de emulación R-Planner y Ekahau.

  9. Who Writes Carlos Bulosan?

    Directory of Open Access Journals (Sweden)

    Charlie Samuya Veric

    2001-12-01

    Full Text Available The importance of Carlos Bulosan in Filipino and Filipino-American radical history and literature is indisputable. His eminence spans the pacific, and he is known, diversely, as a radical poet, fictionist, novelist, and labor organizer. Author of the canonical America Iis the Hearts, Bulosan is celebrated for chronicling the conditions in America in his time, such as racism and unemployment. In the history of criticism on Bulosan's life and work, however, there is an undeclared general consensus that views Bulosan and his work as coherent permanent texts of radicalism and anti-imperialism. Central to the existence of such a tradition of critical reception are the generations of critics who, in more ways than one, control the discourse on and of Carlos Bulosan. This essay inquires into the sphere of the critical reception that orders, for our time and for the time ahead, the reading and interpretation of Bulosan. What eye and seeing, the essay asks, determine the perception of Bulosan as the angel of radicalism? What is obscured in constructing Bulosan as an immutable figure of the political? What light does the reader conceive when the personal is brought into the open and situated against the political? the essay explores the answers to these questions in Bulosan's loving letters to various friends, strangers, and white American women. The presence of these interrogations, the essay believes, will secure ultimately the continuing importance of Carlos Bulosan to radical literature and history.

  10. CERN honours Carlo Rubbia

    CERN Multimedia

    2009-01-01

    On 7 April CERN will be holding a symposium to mark the 75th birthday of Carlo Rubbia, who shared the 1984 Nobel Prize for Physics with Simon van der Meer for contributions to the discovery of the W and Z bosons, carriers of the weak interaction. Following a presentation by Rolf Heuer, lectures will be given by eminent speakers on areas of science to which Carlo Rubbia has made decisive contributions. Michel Spiro, Director of the French National Institute of Nuclear and Particle Physics (IN2P3) of the CNRS, Lyn Evans, sLHC Project Leader, and Alan Astbury of the TRIUMF Laboratory will talk about the physics of the weak interaction and the discovery of the W and Z bosons. Former CERN Director-General Herwig Schopper will lecture on CERN’s accelerators from LEP to the LHC. Giovanni Bignami, former President of the Italian Space Agency, will speak about his work with Carlo Rubbia. Finally, Hans Joachim Schellnhuber of the Potsdam Institute for Climate Research and Sven Kul...

  11. CERN honours Carlo Rubbia

    CERN Multimedia

    2009-01-01

    On 7 April CERN will be holding a symposium to mark the 75th birthday of Carlo Rubbia, who shared the 1984 Nobel Prize for Physics with Simon van der Meer for contributions to the discovery of the W and Z bosons, carriers of the weak interaction. Following a presentation by Rolf Heuer, lectures will be given by eminent speakers on areas of science to which Carlo Rubbia has made decisive contributions. Michel Spiro, Director of the French National Institute of Nuclear and Particle Physics (IN2P3) of the CNRS, Lyn Evans, sLHC Project Leader, and Alan Astbury of the TRIUMF Laboratory will talk about the physics of the weak interaction and the discovery of the W and Z bosons. Former CERN Director-General Herwig Schopper will lecture on CERN’s accelerators from LEP to the LHC. Giovanni Bignami, former President of the Italian Space Agency and Professor at the IUSS School for Advanced Studies in Pavia will speak about his work with Carlo Rubbia. Finally, Hans Joachim Sch...

  12. Major depressive disorder and alterations in insular cortical activity: a review of current functional magnetic imaging (fMRI research.

    Directory of Open Access Journals (Sweden)

    Shawn Hayley

    2012-12-01

    Full Text Available Major depressive disorder (MDD is characterized by a dysregulated fronto-limbic network. The hyperactivation of limbic regions leads to increased attention and processing of emotional information, with a bias toward negative stimuli. Pathological ruminative behavior is a common symptom of depressive disorder whereby the individual is unable to disengage from internal mental processing of emotionally-salient events. In fact, lower deactivations of the neural baseline resting state may account for the increased internal self-focus. The insular cortex, with its extensive connections to fronto-limbic and association areas has recently also been implicated to be a part of this network. Given its wide-reaching connectivity, it has been putatively implicated as an integration center of autonomic, visceromotor, emotional and interoceptive information. The following paper will review recent imaging findings of altered insular function and connectivity in depressive pathology.

  13. Major depressive disorder and alterations in insular cortical activity: a review of current functional magnetic imaging research.

    Science.gov (United States)

    Sliz, Diane; Hayley, Shawn

    2012-01-01

    Major depressive disorder (MDD) is characterized by a dysregulated fronto-limbic network. The hyperactivation of limbic regions leads to increased attention and processing of emotional information, with a bias toward negative stimuli. Pathological ruminative behavior is a common symptom of depressive disorder whereby the individual is unable to disengage from internal mental processing of emotionally salient events. In fact, lower deactivations of the neural baseline resting state may account for the increased internal self-focus. The insular cortex, with its extensive connections to fronto-limbic and association areas has recently also been implicated to be a part of this network. Given its wide-reaching connectivity, it has been putatively implicated as an integration center of autonomic, visceromotor, emotional, and interoceptive information. The following paper will review recent imaging findings of altered insular function and connectivity in depressive pathology. PMID:23227005

  14. Effects of insularity on digestion: living on islands induces shifts in physiological and morphological traits in island reptiles

    Science.gov (United States)

    Sagonas, Kostas; Pafilis, Panayiotis; Valakos, Efstratios D.

    2015-10-01

    Living on islands entails numerous challenges for animals, among which resource scarcity stands out. In order to survive, animals have to optimize energy acquisition. We examined the impact of insularity on digestion comparing a series of physiological and morphological traits of adult males between insular and mainland populations of the Balkan green lizard. Island lizards had longer gastrointestinal tracts and gut passage times and higher digestive efficiencies. The dissection of the hindgut revealed an unexpected finding, the presence of cecal valves that were more frequent in island lizards. Thanks to all above islanders retain food for longer periods and thus maximize energy income and increase the amount of the extracted nutrients. That way, they secure energy income from the limited, in time and quantity, food resources of the islands.

  15. A Role for the Insular Cortex in Long-Term Memory for Context-Evoked Drug Craving in Rats

    OpenAIRE

    Contreras, Marco; Billeke, Pablo; Vicencio, Sergio; Madrid, Carlos; Perdomo, Guetón; González, Marcela; Torrealba, Fernando

    2012-01-01

    Drug craving critically depends on the function of the interoceptive insular cortex, and may be triggered by contextual cues. However, the role of the insula in the long-term memory linking context with drug craving remains unknown. Such a memory trace probably resides in some neocortical region, much like other declarative memories. Studies in humans and rats suggest that the insula may include such a region. Rats chronically implanted with bilateral injection cannulae into the high-order ro...

  16. Comparison of anterior cingulate vs. insular cortex as targets for real-time fMRI regulation during pain stimulation

    OpenAIRE

    Kirsten Emmert; Markus Breimhorst; Thomas Bauermann

    2014-01-01

    Real-time functional magnetic resonance imaging (rt-fMRI) neurofeedback allows learning voluntary control over specific brain areas by means of operant conditioning and has been shown to decrease pain perception. To further increase the effect of rt-fMRI neurofeedback on pain, we directly compared two different target regions of the pain network, notably the anterior insular cortex (AIC) and the anterior cingulate cortex (ACC). Participants for this prospective study were randomly assigned to...

  17. Modulation of functionally localized right insular cortex activity using real-time fMRI-based neurofeedback

    OpenAIRE

    Berman, Brian D.; Horovitz, Silvina G.; Hallett, Mark

    2013-01-01

    The capacity for subjects to learn to volitionally control localized brain activity using neurofeedback is actively being investigated. We aimed to investigate the ability of healthy volunteers to quickly learn to use visual feedback during real-time functional MRI (rtfMRI) to modulate brain activity within their anterior right insular cortex (RIC) localized during a blink suppression task, an approach of possible interest in the use of rtfMRI to reduce urges. The RIC region of interest (RIC-...

  18. Building and Applying "Insularity Theory": Review on Knapp's Prehistoric and Protohistoric Cyprus, 2008.

    Science.gov (United States)

    Katsarou-Tzeveleki, Stella

    listing of external factors (colonization, invasions) originating in the Near East and the Aegean as sequential narrative history, and the descriptive, systemic analysis of 'materiality, production, trade, migration and colonization which have for long been the cornerstones of Cypriot archaeology' (p. 11). In contrast, he turns his attention towards the internal processes within the island society of Bronze Age Cyprus, which shape its insularity and give it a distinctive identity at this specific period, processes that lead to contextual history and formative tradition. 'To study how any society changes, at any time, it is crucial first to look at internal rather than external factors' (p. 1). Defining the concept of insularity is his aim; therefore, he begins with a number of very apposite rhetorical questions (p. 13) and identifies several individual parameters (connectivity, islandscape, social identity, ethnicity, migration, acculturation, hybridization) to which he assigns collective and individual meanings. The eight chapters that follow may be assigned, broadly, to three general units: in the first of these (ch. 1-2), Knapp offers a synthesis of these parameters in the form of a 'theory of insularity'. In the second (ch. 3-7) he formulates his revised narrative of the prehistory and social identity of the island, which involves a presentation of social and economic, rather than stylistic categories, on the basis of the parameters laid down in his theoretical scheme. Finally, in the third unit (ch. 8), he records his overall conclusions, the new cognitive experiences and concerns that have emerged from the application of his theory, both to Cyprus and to insular archaeology in the Mediterranean and on a world scale. Knapp's synthesis of the theory of insularity in the first unit is a major contribution to Mediterranean archaeology, and makes this book a seminal work. Continuing and broadening Broodbank's (2000) reasoning about the Cyclades, Knapp, with Cyprus as his

  19. Cytoarchitecture-Dependent Decrease in Propagation Velocity of Cortical Spreading Depression in the Rat Insular Cortex Revealed by Optical Imaging.

    Science.gov (United States)

    Fujita, Satoshi; Mizoguchi, Naoko; Aoki, Ryuhei; Cui, Yilong; Koshikawa, Noriaki; Kobayashi, Masayuki

    2016-04-01

    Cortical spreading depression (SD) is a self-propagating wave of depolarization accompanied by a substantial disturbance of the ionic distribution between the intra- and extracellular compartments. Glial cells, including astrocytes, play critical roles in maintenance of the extracellular environment, including ionic distribution. Therefore, SD propagation in the cerebral cortex may depend on the density of astrocytes. The present study aimed to examine the profile of SD propagation in the insular cortex (IC), which is located between the neocortex and paleocortex and is where the density of astrocytes gradually changes. The velocity of SD propagation in the neocortex, including the somatosensory, motor, and granular insular cortices (5.7 mm/min), was higher than that (2.8 mm/min) in the paleocortex (agranular insular and piriform cortices). Around thick vessels, including the middle cerebral artery, SD propagation was frequently delayed and sometimes disappeared. Immunohistological analysis of glial fibrillary acidic protein (GFAP) demonstrated the sparse distribution of astrocytes in the somatosensory cortex and the IC dorsal to the rhinal fissure, whereas the ventral IC showed a higher density of astrocytes. These results suggest that cortical cytoarchitectonic features, which possibly involve the distribution of astrocytes, are crucial for regulating the velocity of SD propagation in the cerebral cortex. PMID:25595184

  20. Spatiotemporal dynamics of excitation in rat insular cortex: intrinsic corticocortical circuit regulates caudal-rostro excitatory propagation from the insular to frontal cortex.

    Science.gov (United States)

    Fujita, S; Adachi, K; Koshikawa, N; Kobayashi, M

    2010-01-13

    The insular cortex (IC), composing unique anatomical connections, receives multi-modal sensory inputs including visceral, gustatory and somatosensory information from sensory thalamic nuclei. Axonal projections from the limbic structures, which have a profound influence on induction of epileptic activity, also converge onto the IC. However, functional connectivity underlying the physiological and pathological roles characteristic to the IC still remains unclear. The present study sought to elucidate the spatiotemporal dynamics of excitatory propagation and their cellular mechanisms in the IC using optical recording in urethane-anesthetized rats. Repetitive electrical stimulations of the IC at 50 Hz demonstrated characteristic patterns of excitatory propagation depending on the stimulation sites. Stimulation of the granular zone of the IC (GI) and other surrounding cortices such as the motor/primary sensory/secondary sensory cortices evoked round-shaped excitatory propagations, which often extended over the borders of adjacent areas, whereas excitation of the agranular and dysgranular zones in the IC (AI and DI, respectively) spread along the rostrocaudal axis parallel to the rhinal fissure. Stimulation of AI/DI often evoked excitation in the dorsolateral orbital cortex, which exhibited spatially discontinuous topography of excitatory propagation in the IC. Pharmacological manipulations using 6,7-dinitroquinoxaline-2,3(1H,4H)-dione (DNQX), a non-NMDA receptor antagonist, D-2-amino-5-phosphonovaleric acid (D-APV), an NMDA receptor antagonist, and bicuculline methiodide, a GABA(A) receptor antagonist, indicate that excitatory propagation was primarily regulated by non-NMDA and GABA(A) receptors. Microinjection of lidocaine or incision of the supragranular layers of the rostrocaudally middle part of excitatory regions suppressed excitation in the remote regions from the stimulation site, suggesting that the excitatory propagation in the IC is largely mediated by

  1. Gastronomía típica Margariteña como atractivo turístico del Municipio Mariño Estado Nueva Esparta

    Directory of Open Access Journals (Sweden)

    Medina, María

    2008-04-01

    Full Text Available The typical margariteñan gastronomy, its elements: restaurants, authors, dishes and promotion as a tourism attraction at the Municipio Mariño is characterized. Recommendations for its improvement are presented. Tourism and gastronomy are the theoretical grounds and its importance for the tourism industry. A descriptive and field methodology was used. Today, there is a lack of information, promo-tion and improvement of the typical margariteñan gastronomy as a tourism attraction at the Municipio Mariño due to the lack of its knowledge in addition to the modification that restaurants of the Municipio are doing with the original recipes, are concluded

  2. Diseño de una red local en el núcleo del municipio de Móra d'Ebre

    OpenAIRE

    Linares Guerrero, Isaac

    2013-01-01

    Este proyecto nace por la necesidad del municipio de Móra d'Ebre de tener una red geodésica, coherente y enlazada con la red del Institut Cartogràfic de Catalunya, con la que poder desarrollar futuros proyectos.El municipio contaba con dos vértices de la red utilitaria del ICC, pero debido a obras para la mejora de las vías uno de ellos ha desaparecido. Este hecho junto al actual crecimiento y mejoras de infraestructuras que se está produciendo en el municipio y pueblos cercanos, motiva a la ...

  3. Una aproximación a las características de los municipios de la Región de Murcia

    OpenAIRE

    Rosique Hernández, Virginia

    2013-01-01

    El principal objetivo es analizar el comportamiento de los 45 municipios de la Región de Murcia, en base a las variables población, industria y contratos de empleo. Veremos si estos municipios siguen unas tendencias similares, e intentaremos encontrar un patrón común en su comportamiento, si lo hubiera. Analizaremos como se comportan dichos municipios con respecto a la evolución de sus medias, e intentaremos aproximarnos lo más cerca posible a la realidad socioeconómica de la R...

  4. Programa pre natal dirigido a la gestante indígena del municipio de Caldono - Cauca

    OpenAIRE

    Cabrera Herrera, Claudia Carolina; Patiño Lopeda, Edna Ruth; Casso, Ana Jael

    2013-01-01

    plantear un programa de atención integral a la gestante indígenas del municipio de caldono, cauca de acuerdo a la Normatividad Legal Vigente y teniendo en cuenta sus creencias y costumbres.teniendo en cuenta acuerdos entre IPS, autoridades indígenas y parteras acerca de la atención integral a la embarazada indígena; enseñando lo que es la gestación,su proceso, la serie de cambios: anatómicos, fisiológicos y psicológicos, que no sólo son experimentados por la mujer, sino también, por su parej...

  5. El presupuesto público en la gestión eficiente de los municipios

    Directory of Open Access Journals (Sweden)

    Carlos Arturo Gómez R.

    2004-12-01

    Full Text Available El presente artículo plantea la necesidad de realizar un cambio en el proceso del presupuesto público colombiano, de manera que permita llevar a la práctica los planes de desarrollo elaborados con la participación ciudadana, pasando de un sistema rígido donde se estimula el gasto a un sistema orientado a resultados que tenga en cuenta los objetivos definidos y el impacto social de cada partida asignada. De esta manera, los municipios colombianos, enmarcados en el proceso de descentralización que se ha venido desarrollando en el país, pueden contar con una herramienta de gestión pública que busque la eficiencia y la eficacia, dinamizando el desarrollo social mediante la optimización de costos y gastos, aumentos en la productividad y el mejoramiento de los procesos.

  6. La deuda pública de los municipios aragoneses en los siglos XIV y XV

    Directory of Open Access Journals (Sweden)

    Abella Samitier, Juan

    2009-06-01

    Full Text Available This article aims at studying the origin of public debt in Aragon in the 14th century and its development in the 15th century. Hence, the dire state of municipal finances, the reasons that led city and town councils to run into debt, cuts and rises in interest rates, and some the most important issues of public debt will be fully discussed and analysed.

    El objeto de este artículo es estudiar los orígenes de la deuda pública de los municipios aragoneses en el siglo XIV y su evolución en el siglo XV. En este sentido, se analiza especialmente la cronología de las principales emisiones, los cambios en los tipos de interés y las causas que obligaron a las ciudades y villas del reino a endeudarse.

  7. La desnaturalización del procedimiento insaculatorio en los municipios aragoneses bajo los Austrias

    Directory of Open Access Journals (Sweden)

    Josep María TORRAS I RIBÉ

    2009-11-01

    Full Text Available RESUMEN: Dentro de las actuaciones políticas emprendidas por Felipe II respecto al reino de Aragón con posterioridad a las "alteraciones" del año 1591, merece especial atención por su trascendencia y por sus consecuencias de largo alcance la persistente intromisión del monarca en los municipios aragoneses. El arranque de estas actuaciones debería fijarse en la elaboración de un minucioso informe jurídico realizado por el Dr. Martín Miravete de Blancas en el año 1596. Según el contenido de este documento se pretendía asegurar el control efectivo por parte de la monarquía de la elección de los oficios municipales de todas las ciudades del reino, por medio de la intervención de comisarios electores regios en la selección de los candidatos. A finales del siglo XVII la imposición de este nuevo sistema electoral se había difundido ya a la mayoría de municipios aragoneses.ABSTRACT: Among the political measures taken by Philip II concerning the kingdom of Aragon after the "upheavals" of 1591, the persistent royal interference in Aragonese town councils deserves special attention because of its importance and its far reaching consequences. The start of these interferences lies in a meticulous juridical report written by Dr. Martin Miravete de Blancas in 1596. Its goal was to give the crown real control on the lottery for municipal offices of all the townships of the kingdom, by means of the intervention of royal elector commissaries in the selection of candidates. By the late Seventeenth century this new electoral procedure had spread to a fair majority of Aragonese town councils.

  8. Desarrollo local y políticas rurales en el Municipio del Pilar

    Directory of Open Access Journals (Sweden)

    María Carolina Feito

    2010-07-01

    Full Text Available Analizamos el rol del municipio y las políticas municipales en las problemáticas de los productores hortícolas, considerando que las nuevas funciones de los gobiernos locales implican un nuevo perfil del Estado. En Pilar se reformularon estrategias de intervención en la gestión de los espacios hortícolas. Repasamos ejes del concepto de desarrollo local, el perfil del territorio y el rol de la sociedad civil y desafíos de la gestión municipal, mediante avances de una investigación que aplica metodología cualitativa con trabajo de campo etnográfico en distintos ámbitos municipales del partido. La capacidad de respuesta de las estructuras burocráticas gubernamentales locales es, por el momento, adecuada a las demandas de los productores. Se visualiza cierta coordinación y articulación entre y dentro de los organismos públicos del municipio.We analize the rol of the municipality in the problematics of horticultural productors, considering that the new functions of local governments involves a new profile of the State. InPilar, intervention strategies are reformulated in the management of the horticultural spaces. We will analize axis of the concept of local development, the territorial profile, the rol of civil society and the management of local government. We present advances of an investigation that uses qualitative methodology whit ethnographical fieldwork in several local scopes. The capacity of response of gubernamental burocratic structures is, by now, adequate to the demands of rural productors. We visualize certain coordination and articulation between and inside the public organisms of local government.

  9. Balanced scorecard en las empresas mixtas petroleras del municipio Maracaibo del estado Zulia

    Directory of Open Access Journals (Sweden)

    Alvaro Finali

    2014-01-01

    Full Text Available La presente investigación, tuvo como objetivo identificar las perspectivas basadas en el enfoque del Balanced Scorecard en las empresas mixtas petroleras del municipio Maracaibo del estado Zulia. El sustento teórico utilizado para el estudio, se enmarcó en los aportes realizados por Caycho (2010, Kaplan y Norton, (2004, López (2001, Muñiz y Monfort (2005, Niven (2003, Pérez (2003, Rampersad (2005, Solano et al (2002, entre otros. El presente estudio es de tipo descriptivo, de campo, no experimental, transaccional. La población estuvo conformada en total por cuarenta (40 sujetos entre gerentes y supervisores. Se utilizó como técnica la encuesta, la cual sirvió como mecanismo para evaluar la opinión de la población, a través de un cuestionario estructurado elaborado especialmente para la variable Balanced Scorecard, constituido por cincuenta items, bajo la escala de respuestas tipo Likert, validado por cinco expertos, con un coeficiente Alpha Cronbach que arrojó una confiabilidad de (0,99. Se evidencia cómo en las empresas mixtas petroleras del municipio Maracaibo del estado Zulia, se miden a través de las perspectivas del Balanced Scorecard (BSC algunas veces con el indicador financiera y casi siempre evalúan las del cliente, proceso interno, aprendizaje y crecimiento en la organización, mostrando una tendencia positiva en busca de mejorar su sistema de gestión, para lo cual se recomendó cuidar que todas las perspectivas (financiera, clientes, procesos internos y aprendizaje organizacional, con el fin de que el Sistema Balanceado de Indicadores (SBI produzca la serie de resultados favorables en la administración de la empresas objetos de estudio, ya que para lograrlo es necesario implementar la metodología, monitoreo y análisis constante de los indicadores obtenidos.

  10. Household waste compositional analysis variation from insular communities in the framework of waste prevention strategy plans

    International Nuclear Information System (INIS)

    Highlights: • Waste framework directive has set clear waste prevention procedures. • Household Compositional analysis. • Waste management plans. • Zero waste approach. • Waste generation. - Abstract: Waste management planning requires reliable data regarding waste generation, affecting factors on waste generation and forecasts of waste quantities based on facts. In order to decrease the environmental impacts of waste management the choice of prevention plan as well as the treatment method must be based on the features of the waste that are produced in a specific area. Factors such as culture, economic development, climate, and energy sources have an impact on waste composition; composition influences the need of collecting waste more or less frequently of waste collection and disposition. The research question was to discover the main barriers concerning the compositional analysis in Insular Communities under warm climate conditions and the findings from this study enabled the main contents of a waste management plan to be established. These included advice to residents on waste minimisation, liaison with stakeholders and the expansion of kerbside recycling schemes

  11. Cortex Insular y su rol putativo en la configuración de trastornos Alimenticios

    Directory of Open Access Journals (Sweden)

    Noemí Sanagua

    2007-07-01

    Full Text Available El estudio neurocientífico de los desordenes alimenticios, ha experimentado importantes avances en la ultima década, posibilitando dilucidar sustratos cerebrales asociados a la configuración de diversas patologías. El lóbulo insular ha sido escasamente estudiado, trabajos de neuroimagen recientes han permitido conocer su representación anatómica, citoarquitectónica y funcional, así como su conexión con el sistema límbico y neocortex. Su activación, ha sido implicada en diversos procesos: sensomotores viscerales, somatosensoriales (incluyendo el dolor, motores, volitivos, gustativos, auditivos, vestibulares, emocionales y funciones cognitivas como el lenguaje (Ackermann, H.; Riecker, A; 2004. El presente artículo, tiene por objetivo analizar los correlatos neurofisiológicos asociados a desordenes alimenticios (obesidad, anorexia y bulimia. Sugiriendo una activación tónica diferencial en ínsula, que permitiría explicar la experiencia de saciedad y valoración afectiva a estímulos apetitivos, alterada en desordenes alimenticios.

  12. Taste intensity modulates effective connectivity from the insular cortex to the thalamus in humans.

    Science.gov (United States)

    Yeung, Andy Wai Kan; Tanabe, Hiroki C; Suen, Justin Long Kiu; Goto, Tazuko K

    2016-07-15

    Evaluation of taste intensity is one of the most important perceptual abilities in our daily life. In contrast with extensive research findings regarding the spatial representation of taste in the insula and thalamus, little is known about how the thalamus and insula communicate and reciprocally influence their activities for processing taste intensity. To examine this neurophysiological relationship, we investigated the modulatory effect of intensity of saltiness on connections in the network processing taste signals in the human brain. These "effective connectivity" relationships refer to the neurophysiological influence (including direction and strength of influence) of one brain region on another. Healthy adults (N=34), including 17 males and 17 females (mean age=21.3years, SD=2.4; mean body mass index (BMI)=20.2kg/m(2), SD=2.1) underwent functional magnetic resonance imaging as they tasted three concentrations of sodium chloride solutions. By effective connectivity analysis with dynamic causal modeling, we show that taste intensity enhances top-down signal transmission from the insular cortex to the thalamus. These results are the first to demonstrate the modulatory effect of taste intensity on the taste network in the human brain. PMID:27132544

  13. Neural correlates of the 'good life': eudaimonic well-being is associated with insular cortex volume.

    Science.gov (United States)

    Lewis, Gary J; Kanai, Ryota; Rees, Geraint; Bates, Timothy C

    2014-05-01

    Eudaimonic well-being reflects traits concerned with personal growth, self-acceptance, purpose in life and autonomy (among others) and is a substantial predictor of life events, including health. Although interest in the aetiology of eudaimonic well-being has blossomed in recent years, little is known of the underlying neural substrates of this construct. To address this gap in our knowledge, here we examined whether regional gray matter (GM) volume was associated with eudaimonic well-being. Structural magnetic resonance images from 70 young, healthy adults who also completed Ryff's 42-item measure of the six core facets of eudaimonia, were analysed with voxel-based morphometry techniques. We found that eudaimonic well-being was positively associated with right insular cortex GM volume. This association was also reflected in three of the sub-scales of eudaimonia: personal growth, positive relations and purpose in life. Positive relations also showed a significant association with left insula volume. No other significant associations were observed, although personal growth was marginally associated with left insula, and purpose in life exhibited a marginally significant negative association with middle temporal gyrus GM volume. These findings are the first to our knowledge linking eudaimonic well-being with regional brain structure. PMID:23512932

  14. Household waste compositional analysis variation from insular communities in the framework of waste prevention strategy plans

    Energy Technology Data Exchange (ETDEWEB)

    Zorpas, Antonis A., E-mail: antonis.zorpas@ouc.ac.cy [Cyprus Open University, Faculty of Pure and Applied Science, Environmental Conservation and Management, P.O. Box 12794, 2252 Latsia, Nicosia (Cyprus); Lasaridi, Katia, E-mail: klasaridi@hua.gr [Harokopio University, Department of Geography, 70 El. Venizelou, 176 71 Athens, Kallithea (Greece); Voukkali, Irene [Institute of Environmental Technology and Sustainable Development, ENVITECH LTD, Department of Research and Development, P.O. Box 34073, 5309 (Cyprus); Loizia, Pantelitsa, E-mail: irenevoukkali@envitech.org [Institute of Environmental Technology and Sustainable Development, ENVITECH LTD, Department of Research and Development, P.O. Box 34073, 5309 (Cyprus); Chroni, Christina [Harokopio University, Department of Geography, 70 El. Venizelou, 176 71 Athens, Kallithea (Greece)

    2015-04-15

    Highlights: • Waste framework directive has set clear waste prevention procedures. • Household Compositional analysis. • Waste management plans. • Zero waste approach. • Waste generation. - Abstract: Waste management planning requires reliable data regarding waste generation, affecting factors on waste generation and forecasts of waste quantities based on facts. In order to decrease the environmental impacts of waste management the choice of prevention plan as well as the treatment method must be based on the features of the waste that are produced in a specific area. Factors such as culture, economic development, climate, and energy sources have an impact on waste composition; composition influences the need of collecting waste more or less frequently of waste collection and disposition. The research question was to discover the main barriers concerning the compositional analysis in Insular Communities under warm climate conditions and the findings from this study enabled the main contents of a waste management plan to be established. These included advice to residents on waste minimisation, liaison with stakeholders and the expansion of kerbside recycling schemes.

  15. Anthropogenic and Climatic Influence on Vegetation Fires in Peatland of Insular Southeast Asia

    Science.gov (United States)

    Liew, S.; Miettinen, J.; Salinas Cortijo, S. V.

    2011-12-01

    Fire is traditionally used as a tool in land clearing by farmers and shifting cultivators in Southeast Asia. However, the small scale clearing of land is increasingly being replaced by modern large-scale conversion of forests into plantations/agricultural land, usually also by fires. Fires get out of control in periods of extreme drought, especially during the El Nino periods, resulting in severe episodes of transboundary air pollution in the form of smoke haze. We use the MODIS active fires product (hotspots) to establish correlations between the temporal and spatial patterns of vegetation fires with climatic variables, land cover change and soil type (peat or non-peat) in the western part of Insular Southeast Asia for a decade from 2001 to 2010. Fire occurrence exhibits a negative correlation with rainfall, and is more severe overall during the El-Nino periods. However, not all regions are equally affected by El-Nino. In Southern Sumatra and Southern Borneo the correlation with El-Nino is high. However, fires in some regions such as the peatland in Riau, Jambi and Sarawak do not appear to be influenced by El-Nino. These regions are also experiencing rapid conversion of forest to large scale plantations.

  16. Insular activation during reward anticipation reflects duration of illness in abstinent pathological gamblers

    Directory of Open Access Journals (Sweden)

    Kosuke Tsurumi

    2014-09-01

    Full Text Available Pathological gambling (PG is a chronic mental disorder characterized by a difficulty restraining gambling behavior despite negative consequences. Although brain abnormalities in patients with substance use disorders are caused by repetitive drug use and recover partly with drug abstinence, the relationship between brain activity and duration of illness or abstinence of gambling behavior in PG patients remains unclear. Here, using functional magnetic resonance imaging, we compared the brain activity of 23 PG patients recruited from a treatment facility with 27 demographically-matched healthy control subjects during reward anticipation, and examined the correlations between brain activity and duration of illness or abstinence in PG patients. During reward anticipation, PG patients showed decreased activity compared to healthy controls in a broad range of the reward system regions, including the insula cortex. In PG patients, activation in the left insula showed a significant negative correlation with illness duration. Our findings suggest that insular activation during reward anticipation may serve as a marker of progression of pathological gambling.

  17. Crocidura populations (Mammalia, Soricidae from the Sicilian-Maltese insular area

    Directory of Open Access Journals (Sweden)

    Maurizio Sarà

    1996-12-01

    Full Text Available Abstract Recent studies have shown the presence of a new endemic species of Soricidae, Crocidura sicula, in the Mediterranean area. Its karyotype consists of 36 chromosomes (NF = 56, NFa = 52 as previously recorded in specimens from Sicily and Gozo (Malta. Karyological analysis carried out in the present study on specimens from Marettimo (Egadi and Ustica and on two additional Sicilian localities proved the presence of the same C. sicula karyotype. The multivariate analysis of skull and mandible of these populations revealed a pattern of geographic variation which is mainly related to a size decrease (76% of the total variability accounted for in shrews living in the small islands around Sicily. The body biometrics of these insular shrews follows this trend, with some exceptions such as in Ustica, where shrews are relatively bigger. The shrews from Ustica show also melanic fur, which is darker than the grey-witheish colour found in conspecific populations. Such a phenotype could be the result of adaptation to the volcanic environment on this island. This latter population is, of all the small islands, the most divergent and differentiated from the mother-island; if considering its skull morphometrics (i.e. the residual 24% of total variability and its body biometrics.

  18. Optimization of Monte Carlo simulations

    OpenAIRE

    Bryskhe, Henrik

    2009-01-01

    This thesis considers several different techniques for optimizing Monte Carlo simulations. The Monte Carlo system used is Penelope but most of the techniques are applicable to other systems. The two mayor techniques are the usage of the graphics card to do geometry calculations, and raytracing. Using graphics card provides a very efficient way to do fast ray and triangle intersections. Raytracing provides an approximation of Monte Carlo simulation but is much faster to perform. A program was ...

  19. Quantum Gibbs ensemble Monte Carlo

    International Nuclear Information System (INIS)

    We present a path integral Monte Carlo method which is the full quantum analogue of the Gibbs ensemble Monte Carlo method of Panagiotopoulos to study the gas-liquid coexistence line of a classical fluid. Unlike previous extensions of Gibbs ensemble Monte Carlo to include quantum effects, our scheme is viable even for systems with strong quantum delocalization in the degenerate regime of temperature. This is demonstrated by an illustrative application to the gas-superfluid transition of 4He in two dimensions

  20. Factores asociados a la hospitalización por procesos sensibles a cuidados ambulatorios en los municipios

    Directory of Open Access Journals (Sweden)

    Márquez-Calderón S.

    2003-01-01

    Full Text Available Objetivos: Describir la variabilidad en las tasas de hospitalización por procesos sensibles a cuidados ambulatorios (PSCA entre municipios del área de referencia de un hospital de tercer nivel, y determinar la influencia de las características de la atención primaria, los factores socioeconómicos, el nivel de salud de la población y la accesibilidad geográfica al hospital. Método: Se realizó un estudio ecológico en 34 municipios del área del Hospital Virgen de las Nieves (Granada, abarcando todas las hospitalizaciones por PSCA de 1997 a 1999. Las tasas de hospitalización se calcularon por separado para varones y mujeres y se estandarizaron por el método indirecto según la edad. Se exploraron como variables independientes las siguientes: características de la atención primaria (tipo de modelo y centro, socioeconómicas (desempleo, renta, comercios, tamaño del municipio, de salud (mortalidad y accesibilidad (crona: minutos desde el municipio al hospital. Se realizó un análisis de regresión lineal múltiple. Resultados: El 9,8% de los ingresos ocurridos en el hospital fueron por PSCA. La tasa media anual fue de 10 ingresos por 1.000 habitantes, siendo superior en varones y en los mayores de 74 años. En el 56% de los municipios las razones de hospitalización estandarizadas no fueron estadísticamente diferentes de 1, en un 26% fueron menores y en un 18%, mayores. Un 62% de la variabilidad en las tasas de los varones se explicó por la crona al hospital, el tamaño del municipio, la interacción entre ambas variables y la mortalidad. Las tasas en mujeres se explicaron en un 18% por la crona y la tasa de desempleo. Conclusiones: La variabilidad de las tasas de hospitalización por PSCA no se asoció a las características de la atención primaria en el ámbito geográfico estudiado. La mayor accesibilidad en tiempo al hospital fue la única variable asociada a mayores tasas en varones y mujeres. Las tasas en mujeres fueron

  1. La propensión a los accidentes de tránsito en municipios urbanos de México en 1990

    OpenAIRE

    Marcelino Mauricio Ricárdez Cabrera; Luis Chias Becerril

    2000-01-01

    En este trabajo se realiza una interpretación sobre la intensidad de los accidentes de tránsito en los municipios urbanos de la República Mexicana, considerando a estos eventos como un efecto negativo de la movilidad que se genera en las zonas urbanas. Se analiza una muestra de municipios en el ámbito regional en base en la siniestralidad e incidencia de los accidentes en la población.

  2. Monte Carlo techniques

    International Nuclear Information System (INIS)

    The course of ''Monte Carlo Techniques'' will try to give a general overview of how to build up a method based on a given theory, allowing you to compare the outcome of an experiment with that theory. Concepts related with the construction of the method, such as, random variables, distributions of random variables, generation of random variables, random-based numerical methods, will be introduced in this course. Examples of some of the current theories in High Energy Physics describing the e+e- annihilation processes (QED, Electro-Weak, QCD) will also be briefly introduced. A second step in the employment of this method is related to the detector. The interactions that a particle could have along its way, through the detector as well as the response of the different materials which compound the detector will be quoted in this course. An example of detector at LEP era, in which these techniques are being applied, will close the course. (orig.)

  3. MCMini: Monte Carlo on GPGPU

    Energy Technology Data Exchange (ETDEWEB)

    Marcus, Ryan C. [Los Alamos National Laboratory

    2012-07-25

    MCMini is a proof of concept that demonstrates the possibility for Monte Carlo neutron transport using OpenCL with a focus on performance. This implementation, written in C, shows that tracing particles and calculating reactions on a 3D mesh can be done in a highly scalable fashion. These results demonstrate a potential path forward for MCNP or other Monte Carlo codes.

  4. The problem of the use the hybrid and photovoltaic systems in insular zones with climatic siversity in Madeira; A problematica da utilizacao de sistemas fotovoltaicos e hibridos em zonas insulares de diversidade climatica-ILHA da Madeira

    Energy Technology Data Exchange (ETDEWEB)

    Magro, J. C. E.

    2004-07-01

    Project PAUER contemplates the evaluation and utilization of renewable energy in insular zones with climatic diversity, situated on the Archipelago of Madeira. The project has three main areas of intervention: prospecting and evaluating energetic resources; creation of data bases of climatic data for application in energetic studies and other areas; the installation of twenty autonomous photovoltaic or hybrid systems in isolated localities. This communication presents some data from meteorological observations made up until the present date, following appropriate statistical analysis. Characteristics of some installed photovoltaic and hybrid systems as well as some of the principal problems encountered in the field are also given. (Author)

  5. Monte Carlo Methods in Physics

    International Nuclear Information System (INIS)

    Method of Monte Carlo integration is reviewed briefly and some of its applications in physics are explained. A numerical experiment on random generators used in the monte Carlo techniques is carried out to show the behavior of the randomness of various methods in generating them. To account for the weight function involved in the Monte Carlo, the metropolis method is used. From the results of the experiment, one can see that there is no regular patterns of the numbers generated, showing that the program generators are reasonably good, while the experimental results, shows a statistical distribution obeying statistical distribution law. Further some applications of the Monte Carlo methods in physics are given. The choice of physical problems are such that the models have available solutions either in exact or approximate values, in which comparisons can be mode, with the calculations using the Monte Carlo method. Comparison show that for the models to be considered, good agreement have been obtained

  6. Caracterización preliminar para arcillas bauxíticas de la vereda mesitas, municipio de Aipe, Huila

    OpenAIRE

    O. M. Castellanos Alarcón

    2006-01-01

    El presente trabajo resume los resultados de estudios de laboratorio para muestras de arcilla bauxítica del Municipio de Aipe, Departamento del Huila, utilizando técnicas granulométricas e hidrométricas, Difracción de Rayos X, Absorción Atómica y determinación de propiedades físicas básicas y parámetro ALFA.

  7. Caracterización geológica de arcillas del Valle de Laboyos, Municipio de Pitalito, Huila

    OpenAIRE

    Oscar Mauricio Castellanos Alarcón

    2005-01-01

    El presente trabajo resume los resultados del estudio geológico de caracterización para los depósitos de arcilla del Valle de Laboyos en el Municipio de Pitalito, Departamento del Huila, utilizando técnicas hidrométricas, de humedad, plasticidad, Difracción de Rayos X, ensayos térmicos y de resistencia de materiales

  8. Evoluci��n histórica del municipio Marianao: contexto en que se desarrolla la lucha antituberculosa

    Directory of Open Access Journals (Sweden)

    Ivette Molina Serpa

    2003-04-01

    Full Text Available Se realizó una investigación sobre la lucha antituberculosa en el municipio Marianao. En Cuba esta lucha desde su surgimiento estuvo a cargo de entidades privadas con recursos insuficientes e inescrupulosamente manejados. El municipio Marianao, establecido desde 1878, contó con administraciones municipales que desarrollaron una política negativa para los intereses populares, que propició la propagación de la tuberculosis por causa de las pésimas condiciones de vida y de trabajo de la población. Después del triunfo revolucionario en 1959, en Cuba se estableció la lucha antituberculosa de forma sistemática con el Programa Nacional de Control, que actúa de forma descentralizada desde el nivel municipal. En el municipio Marianao la incidencia de tuberculosis históricamente ha constituido un problema de salud, aunque la tendencia actual ha sido la disminución y ocupa el lugar 13 de entre los 15 municipios de la provincia Ciudad de La Habana.A research on the fight against tuberculosis in Marianao municipality was made. In Cuba, this campaign since its beginning was in the hands of private entities with limited resources that were inscrupulously managed. The Marianao municipality, established in 1878, had municipal administrations that implemented negative policies for the people’s interests and propitiated the spreading of tuberculosis due to the terrible working and living conditions of the population. Since the triumph of the Revolution, in 1959, it was established in Cuba a systematic fight against tuberculosis with the introduction of the National Control Program that acts in a decentralized way from the municipal level. In this municipality, the incidence of tuberculosis has historically been a health problem, although at present there is a trend towards the decrease of this disease and it occupies the 13th place among the 15 municipalites of the province of Havana City.

  9. Decoupling of ENSO and fires in insular Southeast Asia from 2001-2010

    Science.gov (United States)

    Fuller, D. O.

    2010-12-01

    Eight-day active fire time series (2001-May 2010) in western, insular Southeast Asia were analyzed to evaluate whether the relationship between the El Niño Southern Oscillation (ENSO) and fires has changed through time consistent with the hypothesis that fires and climate forcings are becoming decoupled as deforestation has continued in the region. The study period was marked by three major fire peaks in 2002, 2006 and 2009-2010 coinciding with three El Niño events. Maximum cross correlation coefficients (MCC) between lagged ENSO sea-surface temperature indices and fire counts (raw and seasonally detrended) were modest (≤ 0.50) and showed a general decrease for most land cover types from 2001-2006 to 2007-May 2010. A notable exception was peat swamp forest where the MCC increased slightly between the two periods for all indices except Niño3. A measure of annual seasonality also revealed that fires in peat swamp forest, lowland forest and secondary formations from 2007-May 2010 were more seasonal than fires during 2001-2006. Overall, the evidence suggests that fires and ENSO are becoming decoupled in the region and that forest types such as peat swamp and lowland forest may be experiencing more seasonal fires. We hypothesize that the decoupling occurs because of a stabilization in land use and establishment of permanent crops. We thus expect that fires will diminish in these areas as permanent plantations (primarily oil palm) are established and incentives to protect valuable crops outweigh incentives to convert land for cultivation.

  10. Involvement of the insular cortex in regulating glucocorticoid effects on memory consolidation of inhibitory avoidance training

    Directory of Open Access Journals (Sweden)

    Raquel eFornari

    2012-03-01

    Full Text Available Glucocorticoids are known to enhance the consolidation of memory of emotionally arousing experiences by acting upon a network of interconnected brain regions. Although animal studies typically do not consider the insular cortex (IC to be part of this network, the present findings indicate that the IC is importantly involved in regulating glucocorticoid effects on memory consolidation of emotionally arousing inhibitory avoidance training. The specific glucocorticoid receptor agonist RU 28362 (3 or 10 ng in 0.5 l infused bilaterally into the IC of male Sprague-Dawley rats immediately after one-trial inhibitory avoidance training dose-dependently enhanced 48-h retention performance. Moreover, training on the inhibitory avoidance task increased neuronal activity of the IC, as assessed by an increased number of cells expressing immunoreactivity for phosphorylated extracellular signal-regulated kinase 1/2 (pERK1/2. However, systemic administration of a memory-enhancing dose of corticosterone (1 mg/kg after inhibitory avoidance training rapidly reduced the number of pERK1/2-positive cells in the IC, suggesting that glucocorticoid administration reduces overall neuronal activity of the IC. To investigate which components of the inhibitory avoidance training experience were influenced by the intra-IC glucocorticoid administration, in the last experiment rats were trained on a modified inhibitory avoidance task in which context exposure and footshock training occur on two sequential days. RU 28362 administration into the IC enhanced later retention when infused immediately after either the context or footshock training. Thus, these findings indicate that the IC mediates glucocorticoid effects on the consolidation of memory of different components of inhibitory avoidance training and suggest that the IC might be an important element of the rodent brain network involved in emotional regulation of learning and memory.

  11. Intrinsic functional connectivity of insular cortex and symptoms of sickness during acute experimental inflammation.

    Science.gov (United States)

    Lekander, Mats; Karshikoff, Bianka; Johansson, Emilia; Soop, Anne; Fransson, Peter; Lundström, Johan N; Andreasson, Anna; Ingvar, Martin; Petrovic, Predrag; Axelsson, John; Nilsonne, Gustav

    2016-08-01

    Task-based fMRI has been used to study the effects of experimental inflammation on the human brain, but it remains unknown whether intrinsic connectivity in the brain at rest changes during a sickness response. Here, we investigated the effect of experimental inflammation on connectivity between areas relevant for monitoring of bodily states, motivation, and subjective symptoms of sickness. In a double-blind randomized controlled experiment, 52 healthy volunteers were injected with 0.6ng/kg LPS (lipopolysaccharide) or placebo, and participated in a resting state fMRI experiment after approximately 2h 45min. Resting state fMRI data were available from 48 participants, of which 28 received LPS and 20 received placebo. Bilateral anterior and bilateral posterior insula sections were used as seed regions and connectivity with bilateral orbitofrontal and cingulate (anterior and middle) cortices was investigated. Back pain, headache and global sickness increased significantly after as compared to before LPS, while a non-significant trend was shown for increased nausea. Compared to placebo, LPS was followed by increased connectivity between left anterior insula and left midcingulate cortex. This connectivity was significantly correlated to increase in back pain after LPS and tended to be related to increased global sickness, but was not related to increased headache or nausea. LPS did not affect the connectivity from other insular seeds. In conclusion, the finding of increased functional connectivity between left anterior insula and middle cingulate cortex suggests a potential neurophysiological mechanism that can be further tested to understand the subjective feeling of malaise and discomfort during a sickness response. PMID:26732827

  12. Learning Touch Preferences with a Tactile Robot Using Dopamine Modulated STDP in a Model of Insular Cortex

    Directory of Open Access Journals (Sweden)

    Ting-Shuo eChou

    2015-07-01

    Full Text Available Neurorobots enable researchers to study how behaviors are produced by neural mechanisms in an uncertain, noisy, real-world environment. To investigate how the somatosensory system processes noisy, real-world touch inputs, we introduce a neurorobot called CARL-SJR, which has a full-body tactile sensory area. The design of CARL-SJR is such that it encourages people to communicate with it through gentle touch. CARL-SJR provides feedback to users by displaying bright colors on its surface. In the present study, we show that CARL-SJR is capable of learning associations between conditioned stimuli (CS; a color pattern on its surface and unconditioned stimuli (US; a preferred touch pattern by applying a spiking neural network (SNN with neurobiologically inspired plasticity. Specifically, we modeled the primary somatosensory cortex, prefrontal cortex, striatum, and the insular cortex, which is important for hedonic touch, to process noisy data generated directly from CARL-SJR’s tactile sensory area. To facilitate learning, we applied dopamine-modulated Spike Timing Dependent Plasticity (STDP to our simulated prefrontal cortex, striatum and insular cortex. To cope with noisy, varying inputs, the SNN was tuned to produce traveling waves of activity that carried spatiotemporal information. Despite the noisy tactile sensors, spike trains, and variations in subject hand swipes, the learning was quite robust. Further, the plasticity (i.e., STDP in primary somatosensory cortex and insular cortex in the incremental pathway of dopaminergic reward system allowed us to control CARL-SJR’s preference for touch direction without heavily pre-processed inputs. The emerged behaviors we found in this model match animal’s behaviors wherein they prefer touch in particular areas and directions. Thus, the results in this paper could serve as an explanation on the underlying neural mechanisms for developing tactile preferences and hedonic touch.

  13. Modulation of functionally localized right insular cortex activity using real-time fMRI-based neurofeedback

    Directory of Open Access Journals (Sweden)

    Brian D Berman

    2013-10-01

    Full Text Available The capacity for subjects to learn to volitionally control localized brain activity using neurofeedback is actively being investigated. We aimed to investigate the ability of healthy volunteers to quickly learn to use visual feedback during real-time functional MRI (rtfMRI to modulate brain activity within their anterior right insular cortex (RIC localized during a blink suppression task, an approach of possible interest in the use of rtfMRI to reduce urges. The RIC region of interest (RIC-ROI was functionally localized using a blink suppression task, and BOLD signal changes within RIC-ROI used to create a constantly updating display fed back to the subject in the scanner. Subjects were instructed to use emotional imagery to try and increase activity within RIC-ROI during four feedback training runs (FB1–FB4. A ‘control’ run (CNTRL before training and a ‘transfer’ run (XSFR after training were performed without feedback to assess for baseline abilities and learning effects. Fourteen participants completed all neurofeedback training runs. At the group level, increased BOLD activity was seen in the anterior RIC during all the FB runs, but a significant increase in the functionally defined RIC-ROI was only attained during FB2. In atlas-defined insular cortex ROIs, significant increases were seen bilaterally during the CNTRL, FB1, FB2, and FB4 runs. Increased activity within the insular cortices did not show lateralization. Training did, however, result in a significant increase in functional connectivity between the RIC-ROI and the medial frontal gyrus when comparing FB4 to FB1. Since neurofeedback training did not lead to an increase in BOLD signal across all feedback runs, we suggest that learning to control one’s brain activity in this fashion may require longer or repeated rtfMRI training sessions.

  14. Insular artefacts from Viking-Age burials from mid-Norway. A review of contact between Trøndelag and Britain and Ireland

    Directory of Open Access Journals (Sweden)

    Aina Margrethe Heen-Pettersen

    2014-12-01

    Full Text Available This article presents a detailed overview of the Insular artefacts found in Viking-Age burials from the Trøndelag region of mid-Norway, most of which have not previously been published in English. The archaeological evidence indicates that contact between Trøndelag and the British Isles was well established at an early stage of the Viking Age. The main evidence for contact comes from the 9th century, when a number of significant patterns can be discerned. Some local concentrations of Insular goods show the continuing importance of some pre-Viking centres, while other areas suggest co-operation between several neighbouring families in order to equip and provision overseas expeditions. Later, the datable Insular artefacts indicate significant changes in the nature of contact. North Sea trading towards the end of the Viking Age appears to be affected by increasing centralisation of power in Trøndelag during the 10th century.

  15. Condiciones higiénico-sanitarias de comedores escolares del municipio de Oviedo

    Directory of Open Access Journals (Sweden)

    Arias Díaz Cristina

    1998-01-01

    Full Text Available FUNDAMENTO: Conocer las condiciones higiénico-sanitarias en las que se encuentran los comedores escolares del municipio de Oviedo, mediante la realización de una inspección higiénico-sanitaria en estas instalaciones. MÉTODO: Se ha realizado un estudio epidemiológico descriptivo transversal en 24 colegios del municipio de Oviedo, 9 concertados y 15 públicos, según información procedente del Ministerio de Educación y Ciencia (MEC. Se ha llevado a cabo una inspección con un protocolo basado en la Reglamentación Técnico-Sanitaria de Comedores Colectivos. Las variables son las condiciones higiénico-sanitarias de los locales (cocinas, comedores y servicios higiénicos, del utillaje, condiciones del personal y de las materias primas y alimentos. Se han considerado condiciones inadecuadas o deficiencias cuando no se cumplen los criterios del protocolo. RESULTADOS: Las deficiencias encontradas en la mayoría de los comedores escolares inspeccionados han sido la falta de protección en los elementos de iluminación, de malla antiinsectos en ventanas y lavamanos de accionamiento no manual, toallas de papel de un solo uso y jabón líquido tanto en cocinas como en servicios higiénicos. Se han comparado estadísticamente las variables del estudio entre colegios públicos y concertados, para ello se ha realizado un Test de T de Student obteniéndose diferencias significativas, entre ambos tipos de colegios, solo en el estado de las cocinas y en el total de los ítems. CONCLUSIONES: La mayoría de las anomalías encontradas, tanto en colegios públicos como en concertados, son de carácter estructural y de las instalaciones, originadas por el desconocimiento de la legislación vigente. Se cree conveniente impartir formación en Educación Sanitaria, dada la actitud positiva mostrada por los responsables de los centros educativos.

  16. The functional status of the insular apparatus and adrenal cortex of rats at early times after irradiation

    International Nuclear Information System (INIS)

    As early as 0.5-3 h after X-irradiation of rats with a lethal dose of 12 Gy glucocorticoid activity of adrenal cortex was enhanced and 11-oxycorticosteroid level in blood was increased. The increasing of the immunoreactive insulin content of blood was registered at the background of hypercorticoidism and normal function of insular apparatus during the first hours following irradiation. At later times (24-72 h), a stable hypercorticoidism developed, the ability of β-cells to react adequately to glucose was impaired, and IRI content of blood decreased

  17. Parallelizing Monte Carlo with PMC

    Energy Technology Data Exchange (ETDEWEB)

    Rathkopf, J.A.; Jones, T.R.; Nessett, D.M.; Stanberry, L.C.

    1994-11-01

    PMC (Parallel Monte Carlo) is a system of generic interface routines that allows easy porting of Monte Carlo packages of large-scale physics simulation codes to Massively Parallel Processor (MPP) computers. By loading various versions of PMC, simulation code developers can configure their codes to run in several modes: serial, Monte Carlo runs on the same processor as the rest of the code; parallel, Monte Carlo runs in parallel across many processors of the MPP with the rest of the code running on other MPP processor(s); distributed, Monte Carlo runs in parallel across many processors of the MPP with the rest of the code running on a different machine. This multi-mode approach allows maintenance of a single simulation code source regardless of the target machine. PMC handles passing of messages between nodes on the MPP, passing of messages between a different machine and the MPP, distributing work between nodes, and providing independent, reproducible sequences of random numbers. Several production codes have been parallelized under the PMC system. Excellent parallel efficiency in both the distributed and parallel modes results if sufficient workload is available per processor. Experiences with a Monte Carlo photonics demonstration code and a Monte Carlo neutronics package are described.

  18. Insular artefacts from Viking-Age burials from mid-Norway. A review of contact between Trøndelag and Britain and Ireland

    OpenAIRE

    Aina Margrethe Heen-Pettersen

    2014-01-01

    This article presents a detailed overview of the Insular artefacts found in Viking-Age burials from the Trøndelag region of mid-Norway, most of which have not previously been published in English. The archaeological evidence indicates that contact between Trøndelag and the British Isles was well established at an early stage of the Viking Age. The main evidence for contact comes from the 9th century, when a number of significant patterns can be discerned. Some local concentrations of Insular ...

  19. ASSE ENTERO-INSULARE E METABOLISMO GLICO-LIPIDICO NEL DIABETE DI TIPO 2 E NELL’OBESITÀ: EFFETTI DELLA CHIRURGIA BARIATRICA E DI DIVERSI INTERVENTI NUTRIZIONALI

    OpenAIRE

    Griffo, Ettore

    2014-01-01

    Le evidenze scientifiche attribuiscono agli ormoni dell’asse entero-insulare (GLP-1 e GIP), molteplici azioni che vanno dalla regolazione dell’omeostasi glicemica e lipidica al controllo del senso di fame, dell’assunzione di cibo e, quindi, dell’introito energetico. Molte funzioni svolte dagli ormoni dell’asse entero-insulare si sono evidenziate solo dopo gli interventi di chirurgia bariatrica attuati per la terapia dell’obesità morbigena. Durante il triennio del corso di dottorato in “Scienz...

  20. Calidad del servicio público de aseo urbano. Caso: Municipio Maracaibo

    Directory of Open Access Journals (Sweden)

    Alejandrina Sáez

    2011-01-01

    Full Text Available En Venezuela el aseo urbano es considerado un servicio básico, cuya responsabilidad recae sobre los gobiernos locales. En tal sentido por ser catalogado básico, las fallas en la prestación del servicio genera manifestaciones de malestar de la población, como es el caso de la ciudad de Maracaibo, comportamiento que ha experimentado un auge, tanto por las graves consecuencias en la salubridad, como la incomodidad estética y el impacto ambiental ocasionados. Esto ha hecho pertinente, determinar la calidad del servicio público de aseo urbano domiciliario en el municipio Maracaibo, parroquias Francisco Eugenio Bustamante y Antonio Borjas Romero, constituyendo el objetivo principal del presente artículo. El diseño de investigación fue no experimental de campo, con un tipo de estudio descriptivo, para lo cual se elaboró y aplicó un instrumento de medición de la calidad con base en la percepción del usuario, siguiendo un muestreo por etapas. Finalmente, se obtuvo una medición de la calidad de servicio valorada en 2.228, en una escala de 1.0 a 5.0, siendo 5.0 la máxima puntuación. En consecuencia se concluye que el nivel de calidad de servicio en las parroquias estudiadas es bajo.

  1. Desempeño gerencial en las instituciones de la AVEC del Municipio Boconó

    Directory of Open Access Journals (Sweden)

    Gudiño, Maira

    2010-01-01

    Full Text Available El objetivo de la presente investigación fue evaluar el desempeño gerencial educativo en las instituciones católicas bajo la coordinación de AVEC (Asociación Venezolana de Escuelas Católicas del municipio Boconó del estado Trujillo. La fundamentación teórica estuvo basada en Drucker (1999, Rodríguez (2001, Ander Egg (2008, entre otros. El estudio se realizó bajo un tipo de investigación evaluativa con un diseño no experimental transaccional, para el cual se tomó la población total como muestra por ser finita conformada por dieciocho (18 directivos de gerencia alta y media de las diferentes instituciones de AVEC, aplicando un cuestionario validado de varias alternativas con un grado de confiabilidad de 0,75. Se concluyó que los gerentes de AVEC planifican de acuerdo a los lineamientos emanados por la organización a nivel nacional y desde el punto de vista gerencial se puede resaltar que trabajan en equipo, existe sinergia y el manejo de personal se lleva a cabo a través de una comunicación participativa. Sin embargo, el personal docente se encuentra con pocas oportunidades para innovar.

  2. La gobernabilidad metropolitana de Santiago: la dispar relación de poder de los municipios

    Directory of Open Access Journals (Sweden)

    ARTURO ORELLANA

    2009-04-01

    Full Text Available En ausencia de un gobierno metropolitano, las grandes ciudades que sostienen la problemática de una gestión multinivel, es decir, donde se sobrepone la acción del gobierno central, regional y de un conjunto significativo de municipios, generan un escenario complejo para la gobernabilidad en pro de un desarrollo urbano y territorial equilibrado. Desde esta perspectiva, la gran disparidad en la configuración socioterritorial que muestra el Área Metropolitana de Santiago constituye un reflejo de la estructura de poder sobre el espacio metropolitano, donde las comunas del cono oriente muestran un mejor posicionamiento para orientar las acciones públicas y privadas a favor del interés público de su población residenteIn the absence of metropolitan level government, large cities retain the problems associated with multilevel management whereby the activities of central government, regional government and numerous municipal governments overlap, generating in turn a complex scenario for governance in favour of balanced urban and regional development. From this perspective, the significant disparity in socio-spatial configuration within the Santiago Metropolitan Area reflects the structure of power within this metropolitan space, whereby municipalities in the eastern cone are better able to shape public and private actions in support of the public interests of their resident populations.

  3. TARC: Carlo Rubbia's Energy Amplifier

    CERN Multimedia

    Laurent Guiraud

    1997-01-01

    Transmutation by Adiabatic Resonance Crossing (TARC) is Carlo Rubbia's energy amplifier. This CERN experiment demonstrated that long-lived fission fragments, such as 99-TC, can be efficiently destroyed.

  4. Carlos Chagas: biographical sketch.

    Science.gov (United States)

    Moncayo, Alvaro

    2010-01-01

    Carlos Chagas was born on 9 July 1878 in the farm "Bon Retiro" located close to the City of Oliveira in the interior of the State of Minas Gerais, Brazil. He started his medical studies in 1897 at the School of Medicine of Rio de Janeiro. In the late XIX century, the works by Louis Pasteur and Robert Koch induced a change in the medical paradigm with emphasis in experimental demonstrations of the causal link between microbes and disease. During the same years in Germany appeared the pathological concept of disease, linking organic lesions with symptoms. All these innovations were adopted by the reforms of the medical schools in Brazil and influenced the scientific formation of Chagas. Chagas completed his medical studies between 1897 and 1903 and his examinations during these years were always ranked with high grades. Oswaldo Cruz accepted Chagas as a doctoral candidate and directed his thesis on "Hematological studies of Malaria" which was received with honors by the examiners. In 1903 the director appointed Chagas as research assistant at the Institute. In those years, the Institute of Manguinhos, under the direction of Oswaldo Cruz, initiated a process of institutional growth and gathered a distinguished group of Brazilian and foreign scientists. In 1907, he was requested to investigate and control a malaria outbreak in Lassance, Minas Gerais. In this moment Chagas could not have imagined that this field research was the beginning of one of the most notable medical discoveries. Chagas was, at the age of 28, a Research Assistant at the Institute of Manguinhos and was studying a new flagellate parasite isolated from triatomine insects captured in the State of Minas Gerais. Chagas made his discoveries in this order: first the causal agent, then the vector and finally the human cases. These notable discoveries were carried out by Chagas in twenty months. At the age of 33 Chagas had completed his discoveries and published the scientific articles that gave him world

  5. Estrategia de intervención para el cuidado de los-as adolescentes en salud sexual y reproductiva. Policlínico “DR. Carlos J. Finlay”. Marianao, 2009.

    OpenAIRE

    Fajardo Villarroel, Aurora

    2011-01-01

    Se realizó un estudio descriptivo de corte transversal con el objetivo de diseñar una estrategia de intervención para el cuidado de los/as adolescentes en salud sexual y reproductiva que contribuya a elevar el conocimiento de estos, dirigido a los/as adolescentes del Consultorio # 9 del Policlínico Docente Dr. Carlos J. Finlay en el periodo de enero-diciembre del 2009, municipio Marianao. La muestra quedó constituida por 43 adolescentes procedentes del consultorio, lo que constituyó el 100% d...

  6. Mid-Holocene (4200 kyr BP) mass mortalities in Mauritius (Mascarenes) : Insular vertebrates resilient to climatic extremes but vulnerable to human impact

    NARCIS (Netherlands)

    Rijsdijk, Kenneth F.; Zinke, Jens; de Louw, Perry G. B.; Hume, Julian P.; van der Plicht, Hans (J); Hooghiemstra, Henry; Meijer, Hanneke J. M.; Vonhof, Hubert B.; Porch, Nick; Florens, F. B. Vincent; Baider, Claudia; van Geel, Bas; Brinkkemper, Joost; Vernimmen, Tamara; Janoo, Anwar

    2011-01-01

    In the light of the currently increasing drought frequency and water scarcity on oceanic islands, it is crucial for the conservation of threatened insular vertebrates to assess how they will be affected. A 4000 yr old fossil assemblage in the Mare Aux Songes (MAS), southwest Mauritius, Mascarene Isl

  7. Mid-Holocene (4200 yr BP) mass mortalities in Mauritius (Mascarenes): insular vertebrates resilient to climatic extremes but vulnerable to human impact

    NARCIS (Netherlands)

    K.F. Rijsdijk; J. Zinke; P.G.B. de Louw; J.P. Hume; J. van der Plicht; H. Hooghiemstra; H.J.M. Meijer; H.B. Vonhof; N. Porch; V Florens; C. Baider; B. van Geel; J. Brinkkemper; T. Vernimmen; A. Janoo

    2011-01-01

    In the light of the currently increasing drought frequency and water scarcity on oceanic islands, it is crucial for the conservation of threatened insular vertebrates to assess how they will be affected. A 4000 yr old fossil assemblage in the Mare Aux Songes (MAS), southwest Mauritius, Mascarene Isl

  8. THE ASSOCIATION OF WELL-DIFFERENTIATED THYROID-CARCINOMA WITH INSULAR OR ANAPLASTIC THYROID-CARCINOMA - EVIDENCE FOR DEDIFFERENTIATION IN TUMOR PROGRESSION

    NARCIS (Netherlands)

    van der Laan, Bernard F.A.M.; FREEMAN, JL; TSANG, RW; ASA, SL

    1993-01-01

    The sequence of tumorigenesis in the thyroid is unclear. It has been proposed that anaplastic carcinomas of the thyroid develop by dedifferentiation in pre-existing differentiated carcinomas. We reviewed all anaplastic and insular (poorly differentiated) thyroid carcinomas in a consultation practice

  9. 19 CFR 7.3 - Duty-free treatment of goods imported from insular possessions of the United States other than...

    Science.gov (United States)

    2010-04-01

    ... possessions of the United States other than Puerto Rico. 7.3 Section 7.3 Customs Duties U.S. CUSTOMS AND... insular possessions of the United States other than Puerto Rico. (a) General. Under the provisions of... sale other than at retail, and the port director is satisfied that the importation into the...

  10. Talento humano y trabajo en equipo del personal directivo de las universidades del municipio Maracaibo

    Directory of Open Access Journals (Sweden)

    Maribel Medina Fuenmayor

    2010-01-01

    Full Text Available El propósito de esta investigación fue determinar la relación entre talento humano y trabajo en equipo del personal directivo de las universidades del Municipio Maracaibo, sobre la base de los enfoques teóricos de Alles (2005, Dolan et al. (2003, Gubman (2000, Hayes (2002, Jericó (2001, entre otros. La investigación se tipificó como correlacional, no experimental y transversal, utilizando una población de 31 sujetos pertenecientes a la planta directiva de administración de las referidas universidades públicas y privadas. La técnica de recolección de datos fue la observación mediante encuesta, para lo cual se diseñaron dos (2 instrumentos de recolección de datos, estructurados con cinco alternativas de respuestas bajo una escala de actitud tipo Likert, utilizando una validez de contenido por el criterio de 10 expertos, utilizando además el análisis discriminante de ítems, lo cual permitió mayor certeza en sus diseños. La confiabilidad fue calculada por el coeficiente Alfa de Cronbach, el cual arrojó un valor de 0.99 para talento humano y 0.91 para trabajo en equipo, siendo altamente consistentes. Los resultados se analizaron mediante estadística descriptiva con frecuencias absolutas y porcentuales, soportadas con medidas de tendencia central, haciendo uso además de la estadística inferencial con pruebas no paramétricas. Como conclusión, se observó una correlación con dirección positiva y magnitud fuerte entre las variables con un índice rho de Spearman de 0.88, lo que sugiere que bajo las actuales condiciones de este estudio existe una fuerte concomitancia entre las variables.

  11. Determinacion de periodos fundamentales del suelo mediante vibraciones ambientales en el municipio de Humacao, Puerto Rico

    Science.gov (United States)

    Cintron Aponte, Rommel

    La tecnica de Nakamura ha sido utilizada a nivel mundial para determinar periodos fundamentales del suelo. La tecnica consiste en calcular y graficar cocientes espectrales H/V de vibraciones ambientales registradas sobre el suelo. Mediciones de vibraciones ambientales fueron tomadas en 151 lugares dentro del municipio de Humacao, localizado al este de Puerto Rico. Los datos se procesaron utilizando espectros de Fourier y espectros de potencia. La tecnica fue validada al compararla con los resultados de cocientes espectrales H/V de registros de sismos debiles y tambien con una modelacion numerica realizada con datos de un ensayo "downhole". Las graficas de los cocientes espectrales H/V fueron divididas en casos y grupos, los cuales dependen de la facilidad para identificar el periodo fundamental pico y amplitudes en frecuencias menores de 1 Hz, respectivamente. Los resultados obtenidos con ambos espectros fueron comparados y se concluye que los mismos se complementan para proveer resultados mas confiables. Se crearon mapas de periodos fundamentales, factores de amplitud, isoperiodos y clasificacion sismica de sitio. Los mapas de isoperiodos fueron realizados en las zonas mas pobladas sobre depositos de suelo. El mapa de periodos fundamentales del suelo mostro buena correlacion con la geologia local. El mapa de clasificacion sismica derivado de periodos de sitio fue comparado con el mapa de clasificacion sismica derivado de barrenos geotecnicos. El mapa de clasificacion obtenido de periodos puede sobreestimar un poco algunas clasificaciones del suelo. Sin embargo, este mapa puede proveer un estimado aproximado de la velocidad de onda de corte promedio del suelo hasta una profundidad de 100 pies (30 metros).

  12. REIVINDICACIÓN DE LOS EJIDOS EN EL MUNICIPIO LIBERTADOR, DISTRITO CAPITAL

    Directory of Open Access Journals (Sweden)

    Marcelo Carrasco

    2009-01-01

    Full Text Available La ciudad de Caracas dispuso de ejidos desde el año 1594, cuando el Gobernador de la Provincia de Venezuela Don Diego de Osorio los decretó, con la finalidad de que Santiago de León estuviera provista de reservas de tierras para bosques, aguas, y pastos. Los ejidos históricos incluyeron la Serranía del Ávila y sus vertientes montañosas, así como el valle de Caracas y sus inmediaciones no adjudicadas como mercedes de tierras a los conquistadores. Mediante el proceso de composición de tierras liderado por los ediles del Cabildo, casualmente terratenientes, fueron expandiendo la gran propiedad privada en detrimento de los ejidos y de los resguardos indígenas. Mediante una política con fundamentos legales y cartográficos consistentes, la alcaldía del municipio Libertador con la participación de la Dirección de Catastro y el apoyo de la Sindicatura Municipal logró en tiempos recientes la reivindicación parcial de terrenos ejidales, cumpliendo con el mandato de las Leyes respectivas que permiten su investigación, delimitación, conformación legal mediante decretos e incluso su protocolización como son los ejidos hoy reivindicados ubicados en las Parroquias Antímano, El Junquito, La Vega, El Valle, Santa Rosalía y El Paraíso, cuyos casos se exponen en el presente trabajo.

  13. Eventos adversos temporalmente asociados a VAMENGOC- BC®. Municipio La Lisa, 1998-1999

    Directory of Open Access Journals (Sweden)

    Iván Edelberto Cuevas

    2000-12-01

    Full Text Available Con el objetivo de describir la frecuencia de eventos temporalmente asociados a la vacuna cubana VAMENGOC- BC®, se realizó un estudio observacional de tipo descriptivo, cuyo universo estuvo constituido por los lactantes en las edades comprendidas de tres (3549 y cinco meses (3832 de edad de las áreas de salud del Municipio La Lisa en Ciudad de La Habana. Hubo un 3,21% de niños con eventos adversos, con una mayor frecuencia después de la primera dosis; sin diferencias apreciables por sexo. La clasificación fue de un 52% de tipo sistémico, locales un 19% y no solicitados un 29%. La mayor parte de los niños afectados fue en las primeras 72 horas posteriores a la vacunación, y desaparecieron antes de 72 horas desde su comienzo. Las manifestaciones más frecuentes fueron fiebre (predominó entre todos los eventos adversos con 1,53 casos por 100 vacunados; la induración (0,31 por 100 vacunados, eritema (0,30 por 100 vacunados y el dolor (0,136 por 100 vacunados en el sitio de administración de la vacuna; irritabilidad (0,244 por 100 vacunados y pérdida de apetito (0,311 por 100 vacunados. Los eventos no solicitados más frecuentes fueron la Enfermedad Respiratoria Aguda (0,637 por 100 vacunados, la Enfermedad Diarreica Aguda (0,311 por 100 vacunados y la Otitis Media (0,176 por 100 vacunados. Los eventos adversos serios fueron infrecuentes. No hubo fallecidos y todos los casos se recuperaron en menos de diez días, sin secuelas, discapacidades ni minusvalías

  14. Geoprocesamiento aplicado al analisis del uso de la tierra en el municipio de San Pedro de Ycuamandyyú, Paraguay.

    Directory of Open Access Journals (Sweden)

    Oscar Agustín Torres Figueredo

    2010-08-01

    Full Text Available El municipio de San Pedro de Ycuamandyyú está ubicado en el noroeste de la región oriental del Paraguay. Los objetivos de este trabajo constituyen la elaboración y el análisis del mapa del uso de la tierra para la planificación de actividades forestales en la zona, para los cuales se utilizaron técnicas de cartografía, sensores remotos y (SIG Sistemas de Informaciones Geográficas, que posibilitaron el análisis de informaciones provenientes de imágenes satelitales LANDSAT TM 5, de cartas topográficas y de (GPS Sistema de Posicionamiento Global, que permitió el procesamiento de datos en el programa Idrisi 2.0 para la confección de un mapa que posibilitó el análisis sobre la situación del uso de la tierra en el municipio. Se distinguió categorías predominantes como praderas altas o campos naturales, uso agropecuario y praderas bajas o bañados, siendo la cobertura forestal con valor inferior al 25%. Se concluyó que el municipio presenta bastantes áreas de campos naturales y uso agropecuario que podrían utilizarse para actividades de reforestación, sea con especies nativas o exóticas de rápido crecimiento con la finalidad de obtener valores de cobertura forestal en equilibrio con las demás categorías de uso de la tierra.

  15. Aptitud relativa agrícola del municipio de Tuxpan, Nayarit, utilizando el modelo Almagra del Sistema MicroLEIS

    OpenAIRE

    José López García; Diego de la Rosa Acosta; José Irán Bojórquez Serrano

    2006-01-01

    Se realizó la evaluación de tierras para uso agrícola en la llanura fluviomarina dentro del municipio de Tuxpan, Nayarit, con base en un levantamiento de suelos semidetallado. Se evaluó la aptitud relativa agrícola, mediante la modificación del modelo Almagra del sistema MicroLEIS 4.1, el cual permite definir la aptitud relativa agrícola, de lo cual resulta el Almagra-Tuxpan, al crearse una base de datos con las condiciones específicas de esta región. Con base en el modelo Almagra...

  16. ANÁLISIS, PROPUESTA DE ORGANIZACIÓN Y MEJORAS DEL TRANSPORTE PÚBLICO DEL MUNICIPIO DE TORRENT

    OpenAIRE

    Ávila Puerto, José Luis

    2012-01-01

    El objeto del presente TFC es la mejora del Servicio Municipal de Transporte Público del ayuntamiento de Torrent, mediante la reorganización del Servicio de Información de Transporte Público que permita mejorar la atención al ciudadano y a su vez asegure una mayor agilidad en la tramitación de las diversas quejas o sugerencias que las personas puedan realizar. Así como también la mejora de los Servicios de Transporte Público que tiene el municipio, tanto en el Servicio Torre...

  17. Habilidades y representaciones sociales de alumnos de escuelas estatales del municipio de S??o Paulo (Brasil)

    OpenAIRE

    Maria Laura Puglisi Barbosa Franco

    2011-01-01

    Este trabajo hace parte de una investigaci??n m??s amplia que tuvo como objetivo correlatar el rendimiento escolar y el desempe??o en ???habilidades sociales??? con vistas a la formaci??n del ciudadano. Fue desarrollada junto a 741 alumnos de Escuelas Estaduales del Municipio de S??o Paulo, Brasil Teniendo en vista la correlaci??n positiva, observada entre el desempe??o en ???habilidades sociales??? y el rendimiento escolar (principalmente en los ex??menes de Lengua...

  18. Fragilidad visual de la actividad minera de roca ornamental en el municipio de Cehegín (Murcia

    Directory of Open Access Journals (Sweden)

    Ma. de la Luz Tudela Serrano

    2002-01-01

    Full Text Available Todo proceso extractivo presenta una clara incidencia sobre el medio en el cual se desarrolla dejando una serie de secuelas en forma de impactos o riesgos potenciales. Debido a la importancia que los impactos visuales tienen para el desarrollo de la actividad minera de la roca ornamental se plantea en este trabajo determinar las zonas de mayor Fragilidad Visual del Municipio de Cehegín (Murcia y proporcionar una valiosa información de base para una Planificación del Territorio.

  19. Evolución espacio-temporal en la ordenación territorial del municipio de Blanca (Murcia)

    OpenAIRE

    José Molina Ruiz; Mª Luz Tudela Serrano

    2010-01-01

    El territorio es una realidad compleja, frágil y vulnerable cuyos elementos tangibles e intangibles, patrimoniales y comunes, naturales y culturales, son considerados valiosos. Los cambios en las estructuras económicas de los municipios enfocados a una economía de servicios basada en el turismo residencial deben poner especial énfasis en todo lo relacionado con el paisaje y su gestión, evitando una evolución distinta del territorio y un resultado paisajístico también diferente. El diseño de u...

  20. LAS CADENAS PRODUCTIVAS, ESTRATEGIA DE DESARROLLO EMPRESARIAL PARA EL MUNICIPIO DE TAMUÍN, SAN LUIS POTOSÍ

    OpenAIRE

    Ana Diana Betancourt Enríquez; Hugo Daniel Navarro Payta

    2013-01-01

    El presente artículo tiene como principal objetivo el análisis del esquema de cadena productiva, como estrategia para el desarrollo competitivo empresarial del municipio de Tamuín, S.L.P., aunado al caso del Grupo Gusi Sociedad de Producción Rural de Responsabilidad Limitada de esta localidad. En la investigación se presentan lineamientos teóricos que incluyen la conceptualización de la cadena productiva, clasificación de la misma, ventajas de integración del esquema, y rubros de lo local a l...

  1. Tratamiento de aguas residuales con humedales artificiales en Tlapanaloya, municipio de Tequisquiac, Estado de México.

    OpenAIRE

    Avelar Roblero, Juan Uriel

    2011-01-01

    La presente tesis tiene como objeto proponer, mostrar y validar una alternativa basada en el uso y acondicionamiento de humedales artificiales, para resolver el problema de salud pública y contaminación ambiental que genera la descarga de aguas residuales. El campo de estudio y evaluación fue la cabecera municipal de Hueypoxtla, Estado de México, cuyas aguas residuales vierten directamente al cauce del Río Salado, el cual cruza por la comunidad de Tlapanaloya, municipio de Tequisquiac, Estado...

  2. ALGUNAS CONSIDERACIONES DE REHABILITACIÓN MINERA EN LA MINERÍA DEL NÍQUEL: MUNICIPIO DE MOA, CUBA

    OpenAIRE

    Alina Chaviano Beitra; Yosbanis Cervantes Guerra; Allan Pierra Conde

    2011-01-01

    En el municipio de Moa desde el 1939, la Compañía Madereras Moa comenzó la tala extensiva de los bosques en el territorio, derivando esta situación a una explotación indiscriminada de los recursos forestales. Unido a esto, el territorio cuenta con grandes reservas minerales que comenzaron a explotarse en la década de los cincuenta, incrementándose la tala de los bosques. Todo esto, a lo largo de los años produjo un impacto notable sobre el ambiente. Esto significa que el paradigma de sustenta...

  3. Análisis de la seguridad alimentaria en los hogares el municipio de Xochiapulco Puebla, México

    OpenAIRE

    Guadalupe Selene Zárate Guevara; José Arturo Méndez Espinoza; Javier Ramírez Juárez; José Isabel Olvera Hernández

    2016-01-01

    El objetivo de este estudio es conocer el grado de seguridad alimentaria que presentan los hogares del municipio de Xochiapulco, Puebla, teniendo como variables de estudio la disponibilidad y suficiencia alimentaria, el acceso físico y económico a los alimentos y la equidad y carencia por acceso a los alimen- tos. El estudio se desarrolló con un muestreo aleatorio simple con unidad de análisis el hogar rural. Los resultados muestran que el 54% de las ...

  4. Sistemas agro y silvopastoriles en El Limón, municipio de Paso de Ovejas, Veracruz, México

    OpenAIRE

    Bautista Tolentino, Marcelo

    2012-01-01

    La caracterización de los sistemas agroforestales es una buena herramienta que en su momento proporciona elementos de análisis para la toma de decisiones en sistemas de uso del suelo. El objetivo de la investigación fue caracterizar los sistemas agroforestales de acuerdo a sus componentes (agrícola, forestal y pecuario) y al principal uso de las especies arbóreas en la comunidad El Limón, municipio de Paso de Ovejas, Veracruz. Además evaluar la producción de biomasa vegetal y composición quím...

  5. Vial entre el municipio de Móstoles y el polígono industrial Valdearenal(Arroyomolinos).

    OpenAIRE

    Díaz Pérez, David

    2013-01-01

    el proyecto consiste en el diseño de un vial que une el municipio de Móstoles y el Polígono Industrial Valdearenal, perteneciente al término municipal de Arroyomolinos. Adicionalmente se pretende diseñar una glorieta en su enlace con las vías urbanas de Móstoles para enlazar el vial con las vías urbanas de Móstoles. El enlace con el polígono industrial se realiza en una glorieta ya presente en la zona. Para la realización de este proyecto se ha seguido un proceso que engloba varias fases. ...

  6. Plan integral de servicio social en municipios de muy alta marginación en el estado de Oaxaca

    OpenAIRE

    Guillermo Trejo Carbajal

    2013-01-01

    El plan de servicio social implantado por la UABJO, pretende la creación de cuatro Brigadas de Servicio Social integradas por estudiantes de diversas carreras, con el fin de atender a veinte municipios de las Sierras norte y sur en condiciones de muy alta marginación. El objetivo es incidir en la mejora de niveles de salud, vivienda, economía familiar, desarrollo urbano y sustentable. Desarrollando acciones múltiples de diagnósticos de necesidades esenciales, asesorías contables, administrat...

  7. Implementación de red WiMAX/WiFi en el municipio de Llançà

    OpenAIRE

    Martínez Campo, José

    2013-01-01

    Diseño de una red telemática. Implementación de una red WiMAX/WiFi de acceso público en localizaciones turísticas en el municipio de Llançà. Disseny d'una xarxa telemàtica. Implementació d'una xarxa WiMAX/WiFi d'accés públic en localitzacions turístiques en el municipi de Llançà. Bachelor thesis for the Telecommunication Technologies program on Telematics.

  8. Tentativas de suicidio en el municipio de Valencia: evolución y distribución urbana.

    OpenAIRE

    J Gimeno Adelantado; Manuel Gómez Beneyto

    1993-01-01

    Se analizan las tentativas de suicidio registradas en los hospitales públicos del municipio de Valencia desde 1982 a 1985. La evolución temporal indica un mantenimiento de las tasas anuales, con un incremento relativo de la proporción de hombres y de los intervalos de edad de 15 a 29 y más de 60. La sobredosis de medicamentos tiende a disminuir, así como los ingresos, tanto en sala como en UCI. La distribución urbana revela la existencia de tres áreas de alto riesgo barrios "artificiales" cre...

  9. MODELO DE GOBIERNO ELECTRÓNICO PARA LA ALCALDÍA RURAL DEL MUNICIPIO AUTÓNOMO COLÓN

    OpenAIRE

    Albanio Alcántara Acosta; Jesús J. Cendros Guasch

    2006-01-01

    En la actualidad el avance de las nuevas tecnologías y el progresivo acceso de los ciudadanos a la red de Internet esta abriendo camino a nuevas posibilidades en el campo del gobierno, descubriendo a Internet como una instrumento de evolución en la forma de relación entre las administraciones públicas y los ciudadanos. El propósito del presente estudio fue proponer un modelo de gobierno electrónico para la Alcaldía rural del municipio autónomo Colón. La investigación fue de tipo descripti...

  10. MODELO DE GOBIERNO ELECTRÓNICO PARA LA ALCALDÍA RURAL DEL MUNICIPIO AUTÓNOMO COLÓN

    Directory of Open Access Journals (Sweden)

    Albanio Alcántara Acosta

    2006-01-01

    Full Text Available En la actualidad el avance de las nuevas tecnologías y el progresivo acceso de los ciudadanos a la red de Internet esta abriendo camino a nuevas posibilidades en el campo del gobierno, descubriendo a Internet como una instrumento de evolución en la forma de relación entre las administraciones públicas y los ciudadanos. El propósito del presente estudio fue proponer un modelo de gobierno electrónico para la Alcaldía rural del municipio autónomo Colón. La investigación fue de tipo descriptiva y de campo. La población y muestra se dividió en dos tipos, la población A 101.219 habitantes del municipio Colón quedando su muestra en 204 sujetos y la población B de 13 Coordinadores y jefes de unidades de la Alcaldía tomándolos como censo poblacional. Utilizando instrumentos con preguntas cerradas para la población A y tipo likert para la población B. Se aplicaron estadísticas descriptivas con frecuencias absolutas y porcentuales para la población A, permitiendo concluir que la brecha digital en el municipio es del 67%, viéndose afectada mayormente por el nivel académico de la población, de igual manera se realizó un análisis de varianza para la población B obteniendo como resultado que la alcaldía necesita la contratación de personal especializado en el área de tecnología, así como también la creación de un portal Web que contenga los servicios ofrecidos por la alcaldía. Se recomienda establecer el Modelo de Gobierno Electrónico para la Alcaldía Rural del Municipio Autónomo Colón del Estado Zulia propuesto planteado en esta investigación.

  11. GOBIERNO ELECTRÓNICO DE LA ALCALDÍA DEL MUNICIPIO CARIRUBANA DEL ESTADO FALCÓN - VENEZUELA

    OpenAIRE

    Felix Scarbay; Doris Parra; Niorka Medina

    2008-01-01

    El propósito de esta investigación fue determinar los factores organizacionales, tecnológicos y legales que inciden en el desarrollo del Gobierno Electrónico en la alcaldía del Municipio Carirubana, así como determinar la brecha digital existente en los ciudadanos que habitan en él proponiendo lineamientos estratégicos para desarrollar el Gobierno electrónico. La investigación es de tipo descriptivo de campo. La metodología utilizada fue dividida en fases y actividades que generaban entradas ...

  12. Los Pteridófitos de un bosque subandino en el municipio de Albán, Cundinamarca (Colombia)

    OpenAIRE

    Triana Moreno Luz Amparo; Murillo Aldana José

    2004-01-01

    Se presenta el tratamiento taxonómico de los helechos y plantas afines de un bosque subandino localizado en el municipio de Albán, al occidente de Cundinamarca, entre 1.900 y 2.100 m de altitud. El área de estudio comprende una su erficie de 70 ha, de las cuales 22 corres-ponden a un relicto de bosque subandino. Allí se registran 107 especies distribuidas en
    45 géneros (38% de los géneros colombianos) y 21 familias (60% de las familias del país),   resultados importantes teniendo e...

  13. Caracterizacion de la Macrofauna dulceacuícola de invertebrados del río Sevilla, municipio Niquero (Granma

    Directory of Open Access Journals (Sweden)

    Damaiky Hernández Duarte

    2005-01-01

    Full Text Available En el presente trabajo se realizó una caracterización faunística y ecológica del río Sevilla ubicado en el municipio Niquero, Provincia Granma. Se ofrece una lista anotada de las 63 taxa infragenéricos representados por 3061 individuos colectados en las siete localidades investigadas desde noviembre del 2002 hasta febrero del 2003, durante los períodos de lluvia y seca. Además se ofrece un análisis al nivel de las especies estudiadas utilizando índices como frecuencia, constancia, abundancia e importancia relativa.

  14. La deserción escolar en la educación rural, Municipio de El Fuerte, Sinaloa.

    OpenAIRE

    Ruíz Ramírez, Rosalva

    2014-01-01

    El objetivo de la investigación fue analizar las causas y consecuencias -de tipo personal, económico y social- que provocan la deserción escolar de estudiantes de preparatoria, caso Universidad Autónoma de Sinaloa (UAS) en el municipio El Fuerte. La pesquisa se efectuó en la Unidad Académica San Blas y sus extensiones La Constancia y Las Higueras de Los Natoches en 2013. Se trabajó con metodología de enfoque mixto analizando datos cualitativos y cuantitativos a través de observación directa, ...

  15. Diseños hidráulicos plan maestro de alcantarillado centro poblado la magdalena municipio de Quebradanegra

    OpenAIRE

    Castro Ladino, Nelson Yovani

    2012-01-01

    Este trabajo desarrolla los estudios y diseños hidráulicos del Plan Maestro de Alcantarillado del Centro Poblado La Magdalena del municipio de Quebradanegra Cundinamarca, en el marco de los Planes Departamentales para el Manejo Empresarial de los Servicios de Agua Potable y Saneamiento Básico (PDA), definidos por el Gobierno Nacional como estrategia de apoyo a la gestión municipal, a través del MAVDT y específicamente con el Viceministerio de Aguas y Saneamiento. Se reali...

  16. Conocimientos y prácticas en salud sexual y reproductiva de adolescentes escolares en un municipio colombiano

    OpenAIRE

    Rengifo reina, Herney Alonso; Cordoba Espinal, Alexandra; Serrano Rodriguez, Mayerlin

    2013-01-01

    Objetivo Identificar los conocimientos y prácticas en salud sexual y reproductiva de adolescentes del municipio de Miranda - Cauca en Colombia.Métodos Se realizó un estudio observacional descriptivo de corte transversal. La muestra fue de 406 adolescentes. Se exploraron variables en tres áreas o categorías: sociodemográficas, de conocimiento y de prácticas. Resultados Se presentaron conocimientos en niveles altos y muy alto, donde     90,5 % (362) de adolescentes habían recibido información s...

  17. Salud laboral en artesanos de microempresas en un municipio mexicano: una investigación-acción participativa

    OpenAIRE

    Anaya Velasco, Ana; Universidad de Guadalajara; Aranda Beltrán, Carolina; Universidad de Guadalajara; Torres López, Teresa Margarita; Universidad de Guadalajara

    2013-01-01

    El presente trabajo describe una investigación-acción participativa para conocer las condiciones de salud y la evolución de grupo en diez microempresas en un municipio mexicano. Para evaluar las primeras se utilizó el Cuestionario de Grupo Homogéneo, extraído del modelo obrero italiano original, y para la segunda un listado de momentos de integración de grupos operativos e indicadores. Se identificaron condiciones peligrosas, tales como ruido, polvo, exposición a instrumentos cortantes y exig...

  18. La asociatividad como estrategia para mejorar la competitividad de las Microempresas productoras de calzado del Municipio de Sincelejo

    OpenAIRE

    Esquivia Salgado, Luis Isaac

    2013-01-01

    Este artículo de revisión bibliográfica, cuyo objetivo es diagnosticar la situación actual, en materia de asociatividad empresarial en el municipio de Sincelejo. Se realizó en tres fases, consultar de fuentes secundarias, análisis de las condiciones de favorabilidad que permitan implementar un proceso asociativo entre empresas productoras de calzado y redacción del artículo. Los resultados evidencian que, su estado de asociatividad empresarial es bastante precario o nulo, al no pertenecer a...

  19. COMERCIALIZACIÓN DE OVINOS DE PELO EN LOS MUNICIPIOS DE TEJUPILCO Y AMATEPEC DEL ESTADO DE MÉXICO

    OpenAIRE

    Juvencio Hern\\u00E1ndez-Mart\\u00EDnez; Mar\\u00EDa Isabel Ort\\u00EDz-Rivera; Samuel Rebollar-Rebollar; Eugenio Guzm\\u00E1n-Soria; Felipe de Jes\\u00FAs Gonz\\u00E1lez -Razo

    2013-01-01

    El presente trabajo tuvo como objetivo determinar el mercado de los ovinos en el sur del Estado de México. Se analizó el proceso de comercialización de los ovinos de pelo en los Municipios de Tejupilco y Amatepec, durante el año 2011, en la cual se identificaron los canales de comercialización y se realizaron los cálculos de sus márgenes de comercialización, en términos absolutos y relativos mediante sus valores equivalentes de la carne de ovino. La información provino de un muestreo por inte...

  20. Entre el agua y el oro: tensiones y reconfiguraciones territoriales en el Municipio de Vetas, Santander, Colombia

    OpenAIRE

    Buitrago Hernández, Emerson Andrés

    2012-01-01

    El siguiente trabajo busca, en primer lugar, visibilizar a los habitantes del páramo de Santurbán, especialmente a las personas que habitan el municipio de Vetas (departamento de Santander), a través del estudio de cómo los recursos implicados en el centro del debate, el oro y el agua, son apropiados por los y las habitantes de Vetas, de tal forma que configuran su territorialidad. A través de esto, también se busca resaltar su propio proyecto de páramo y generar argumentos que puedan dar bas...

  1. Análisis de la competitividad agrícola del municipio de Arauca (Arauca): corregimiento de Todos los Santos

    OpenAIRE

    Garzón Peña, Mary Ilsa

    2013-01-01

    El presente trabajo de investigación tuvo como propósito analizar la competitividad agrícola del municipio de Arauca (Arauca), específicamente en lo que respecta a los sistemas productivos de plátano y cacao ubicados en el corregimiento de Todos los Santos, toda vez que esta zona representa la única área productiva del municipio para estos dos cultivos. Dicho análisis se desarrolló basado en el comportamiento de la producción del período 2000-2010 y tomando como referencia el mercado agrícola...

  2. Caracterización de suelos según su Índice de fertilidad y capacidad de uso en El Municipio de Ancoraimes

    OpenAIRE

    Mamani, B.; Miranda, R.; Montavalli, P.; J. Cusicanqui

    2007-01-01

    El presente trabajo de investigación se viene desarrollando en el Municipio de Ancoraimes, correspondiente al Altiplano Norte de la Provincia Omasuyos del Departamento de La Paz. Los objetivos son: caracterizar los suelos de tres comunidades del municipio de Ancoraimes - Chinchaya, Cohani y Chojñapata; y determinar la fertilidad y uso actual de la tierra. Para el presente estudio se elaboró mapas en base a imágenes satelitales, donde se realizo un análisis del paisaje y subpaisaje los que fue...

  3. El protagonismo de los municipios en el desarrollo educativo: Propuesta de un modelo e instrumento para su análisis

    OpenAIRE

    Muñoz Moreno, José Luís; Gairín Sallán, Joaquín

    2015-01-01

    La presente aportación destaca las contribuciones más relevantes derivadas del estudio que indaga sobre algunas herramientas para diagnosticar el desarrollo educativo de los municipios promovido por los Ayuntamientos. Particularmente, profundiza en el diseño y la validación de un Modelo de estadios de desarrollo educativo y de un Instrumento para la autoevaluación que permiten analizar, de manera contextualizada, del desarrollo educativo de los municipios. La creación del Modelo y del Instrum...

  4. Inventario de atractivos para el desarrollo turístico local del municipio Martí. Inventory of attractions for local tourist development of the Marti municipality.

    OpenAIRE

    Mabel Font Aranda; Leonardo Cuétara Sánchez; Yoleidy Castanedo Aneiro; Mavis Acosta Peñate; Daylis Delgado Fajardo; Dubier Caña Pereira; Orestes Morales; Yuri La Rosa Martínez

    2013-01-01

    El deterioro del sector agropecuario en el municipio Martí, exige la necesidad de ejecución de un grupo de proyectos de desarrollo local, que permitan revertir los procesos en el ámbito social, económico y ambiental a partir de los recursos naturales y socioculturales propios. Sobre la base anterior, se realizó el inventario de recursos/atractivos del municipio Martí como parte del diseño de productos turísticos a ofrecer  en la búsqueda de alternativas para el desarrollo local. Se registró y...

  5. Proyecto de reforma de la calle Pou y la calle Passeig de Mar del municipio de Sant Llorenç des Cardessar, Mallorca

    OpenAIRE

    Miguel Gaya, Rafel

    2012-01-01

    El Ayuntamiento de Sant Llorenç des Cardessar (Mallorca) cree oportuna una reforma y remodelación de la calle Pou y de un tramo de la calle Passeig de la Mar. En los estos últimos años, el Ayuntamiento ha estado reurbanizando varias calles del centro urbano del municipio debido al estado inadecuado de estas. Las calles a remodelar ámbito del presente proyecto, están situadas en el núcleo urbano de Sant Llorenç des Cardessar y forman parte del centro histórico del municipio. ...

  6. La problemática del manejo de los residuos sólidos en seis municipios del sur de Zacatecas

    OpenAIRE

    Germaín A. Castañeda Delgado; Aldo A. Pérez Escatel

    2015-01-01

    los objetivos de la presente investigación son determinar la cantidad de residuos sólidos generados en seis municipios del estado de Zacatecas, México, y comparar su composición porcentual en peso y volumen. Los resultados muestran la complejidad para el tratamiento y la disposición final de residuos sólidos en los municipios rurales y urbanos, debido a los grandes volúmenes generados y a los cambios en los patrones de consumo, que revelan la necesidad de emprender proyectos enfocados a su re...

  7. Mezcla de promoción para la comercialización de municipios turísticos. Estudio de caso en el municipio Gibara del destino Holguín/Cuba. Un acercamiento desde La Habana Vieja

    Directory of Open Access Journals (Sweden)

    Litzandra Guerrero Arias

    2013-12-01

    Full Text Available El presente texto constituye un estudio de caso sobre Gibara, uno de los municipios de la provincia Holguín, de Cuba, que cuenta con numerosos y atractivos recursos insuficientemente explotados. Desde el punto de vista teórico se apoya en el Marketing Turístico como una opción ineludible para alcanzar importantes niveles de preferencia entre los consumidores y tiene como objetivo diseñar la mezcla de promoción comercial para Gibara como municipio turístico. Dentro de la investigación se utilizaron procedimientos lógicos del conocimiento científico, el enfoque teórico sistémico estructural, métodos empíricos relacionados con instrumentos sicosociales de búsqueda de información y la modelación como método teórico. Como resultado se obtuvo la propuesta metodológica para el diseño de la mezcla y se aplicaron de forma práctica el diseño de dos de sus instrumentos: el Programa de Publicidad y el Programa de Relaciones Públicas. Este estudio podría tributar al crecimiento del territorio como destino, pero también podría ser aplicable a otras localidades con potencialidades para el desarrollo del turismo.

  8. Mezcla de promoción para la comercialización de municipios turísticos. Estudio de caso en el municipio Gibara del destino Holguín/Cuba. Un acercamiento desde La Habana Vieja

    Directory of Open Access Journals (Sweden)

    Litzandra Guerrero Arias

    2013-11-01

    Full Text Available El presente texto constituye un estudio de caso sobre Gibara, uno de los municipios de la provincia Holguín, de Cuba, que cuenta con numerosos y atractivos recursos insuficientemente explotados. Desde el punto de vista teórico se apoya en el Marketing Turístico como una opción ineludible para alcanzar importantes niveles de preferencia entre los consumidores y tiene como objetivo diseñar la mezcla de promoción comercial para Gibara como municipio turístico. Dentro de la investigación se utilizaron procedimientos lógicos del conocimiento científico, el enfoque teórico sistémico estructural, métodos empíricos relacionados con instrumentos sicosociales de búsqueda de información y la modelación como método teórico. Como resultado se obtuvo la propuesta metodológica para el diseño de la mezcla y se aplicaron de forma práctica el diseño de dos de sus instrumentos: el Programa de Publicidad y el Programa de Relaciones Públicas. Este estudio podría tributar al crecimiento del territorio como destino, pero también podría ser aplicable a otras localidades con potencialidades para el desarrollo del turismo.

  9. Blood supply of the insular cortex of Cercopithecus Aethiops: Another approach to establish non-human primate model for addiction

    Directory of Open Access Journals (Sweden)

    Filipović Branislav

    2008-01-01

    Full Text Available The non-human primate model has already been applied in studies about alcoholism in the last decade, demonstrating a high confidence level of similarities between humans and non-human monkeys. Authors indented to establish the definitive model for addiction by investigating the insular blood supply in Cercopithecus Aethiops. In 23 out of 24 Latex injected adult brains, the insula received blood supplied by the M2 segment of the middle cerebral artery (MCA. The cortex was supplied by two separate trunks, while perforating branches originating directly from MCA, individually, or together with lateral striate (lenticulostriate arteries. Their average caliber was about 120 µm, and the number of its branches ranged from 2 to 9. No left - right asymmetries have been recorded. Similarities with the human vascular pattern have been studied. .

  10. Food webs patterns in species-poor insular lakes resemble climate-related patterns in continental lakes

    DEFF Research Database (Denmark)

    Vidal, Nicolas; Amsinck, Susanne Lildal; Goncalves, Vitor;

    2015-01-01

    island groups with contrasting climates but similar seasonality: The Faroe Islands (cold; 6.5±2.8°C) and the Azores (warm; 17.3±2.9°C). We analysed community and food web structure using a stable isotopes approach investigating fish, macro-invertebrates, and zooplankton in 20 lakes. We found a smaller...... mean body size of fish in the Azorean lakes even if standardised by maximum length of the fish species present, suggesting a higher predation pressure on zooplankton and consequently higher phytoplankton abundance at the same nutrient levels. A triangular shape of the food web, with wider carbon range...... for basal organisms and for the whole food web appeared in the colder lakes. In contrast to previous works, though, Layman metrics of the fish food web were similar between the two climatic regions despite differences in basal organisms. Our results from insular systems showed a reduced fish body size...

  11. Proton Upset Monte Carlo Simulation

    Science.gov (United States)

    O'Neill, Patrick M.; Kouba, Coy K.; Foster, Charles C.

    2009-01-01

    The Proton Upset Monte Carlo Simulation (PROPSET) program calculates the frequency of on-orbit upsets in computer chips (for given orbits such as Low Earth Orbit, Lunar Orbit, and the like) from proton bombardment based on the results of heavy ion testing alone. The software simulates the bombardment of modern microelectronic components (computer chips) with high-energy (.200 MeV) protons. The nuclear interaction of the proton with the silicon of the chip is modeled and nuclear fragments from this interaction are tracked using Monte Carlo techniques to produce statistically accurate predictions.

  12. La planificación y gestión del desarrollo territorial en municipios con dificultades de gobernabilidad

    Directory of Open Access Journals (Sweden)

    Hernando Gonz\\u00E1lez Murillo

    2004-01-01

    Full Text Available En los municipios de la «Otra Colombia», las condiciones existentes para llevar adelante un proceso de planificación como el establecido por las leyes 152 de 1994 (Plan de Desarrollo y 388 de 1997 (Plan de Ordenamiento Territorial son muy endebles, por lo cual dichos instrumentos han contribuido poco al mejoramiento de las condiciones de vida de sus habitantes. Partiendo de las condiciones características de los municipios de la «Otra Colombia», este artículo examina el modelo de planeación derivado de la Ley 152 de 1994, resaltando sus debilidades y planteando los enfoques de planeación requeridos para que esta herramienta se convierta en un recurso potente para la reconstrucción del tejido social y el fortalecimiento de los potenciales endógenos, movilizándolos a través de un proyecto político de desarrollo con visión de largo plazo, como condición indispensable para que las comunidades locales se conviertan en gestoras de su propio desarrollo. Finalmente, se presentará una propuesta de ajuste al proceso de planeación local, contemplando el ciclo de la planeación establecido por la norma y precisando algunas reformas legales y requerimientos de sistemas de apoyo a la planeación participativa.

  13. Prevalencia de anticuerpos para Trypanosoma cruzi en caninos de dos municipios endémicos de Boyacá

    Directory of Open Access Journals (Sweden)

    Diego Manrique Abril

    2012-04-01

    Full Text Available Objetivo. evaluar la prevalencia de anticuerpos anti Trypanosoma cruzi (T. cruzi en una muestra de caninos domésticos residentes en dos municipios endémicos. Materiales y métodos. Se tomaron muestras séricas de 20 caninos procedentes de hogares donde residen mujeres gestantes seropositivas y 40 perros habitantes de hogares de mujeres gestantes seronegativas en Miraflores y Moniquira, Boyacá. El análisis se realizó mediante prueba diagnóstica rápida dipstick de InBios. Resultados. Se encontró prevalencia del 16.7% en Moniquirá y del 13.3% Miraflores respectivamente con una prevalencia general del 15% en los dos municipios. Se halló riesgo 3 veces mayor de que ocurra la infección en caninos, en los hogares donde residen gestantes seropositivas; además la infestación por pulgas y garrapatas en el animal, hábitat cercano a la vivienda, se relacionan con mayor seropositividad en el canino. Conclusiones. La raza, el sexo, la presencia de aves en la casa y al examen clínico general son considerados factores pronósticos en en la infección por Trypanosoma cruzi en caninos. Como factores protectores se identificó la desparasitación y vacunación de los animales.

  14. GOBIERNO ELECTRÓNICO DE LA ALCALDÍA DEL MUNICIPIO CARIRUBANA DEL ESTADO FALCÓN - VENEZUELA

    Directory of Open Access Journals (Sweden)

    Felix Scarbay

    2008-05-01

    Full Text Available El propósito de esta investigación fue determinar los factores organizacionales, tecnológicos y legales que inciden en el desarrollo del Gobierno Electrónico en la alcaldía del Municipio Carirubana, así como determinar la brecha digital existente en los ciudadanos que habitan en él proponiendo lineamientos estratégicos para desarrollar el Gobierno electrónico. La investigación es de tipo descriptivo de campo. La metodología utilizada fue dividida en fases y actividades que generaban entradas y salidas que fueron utilizadas en las actividades posteriores, concluyendo que la brecha digital existente en el uso de Internet en los ciudadanos es de 82%, y esta determinada básicamente por el nivel económico de las personas, el acceso a la tecnología y del conocimiento en el manejo de Internet, también influye el nivel educativo que presentan los ciudadanos del municipio Carirubana. Por otra parte los servicios de mayor demanda por parte del público son el pago de ejidos, trimestres y la solicitud de documentos oficiales.

  15. Flora medicinal en San Nicolás, municipio de Malinalco, Estado de México

    Directory of Open Access Journals (Sweden)

    Laura White-Olascoaga

    2015-08-01

    Full Text Available Se determinaron aspectos sobre el hábitat, uso y función de los recursos vegetales utilizados en la medicina tradicional, en la comunidad de San Nicolás, municipio de Malinalco, ubicada al sur del Estado de México. De enero de 2010 a enero de 2011 se aplicaron entrevistas a 30 hombres y mujeres, de entre 20 y 60 años de edad. La observación directa y participativa permitió verifi car la función y manejo de las plantas. Se registraron 165 especies correspondientes a 147 géneros y 70 familias de plantas vasculares. Las especies utilizadas en la medicina tradicional se agruparon en 13 clases o categorías de acuerdo con el tipo de enfermedad en que se utilizan. Las categorías de plantas medicinales que mostraron las mayores frecuencias de utilización se relacionan con el tratamiento de enfermedades del aparato digestivo, aparato respiratorio, enfermedades asociadas con la nutrición y sistema endócrino, además de las referidas como síndromes de filiación cultural.Las plantas medicinales se presentaron en dos diferentes hábitat; 45.4% son especies pertenecientes a la flora viaria y el 54.5% prosperan en agroecosistemas familiares, llamados localmente huertos o solares. Aproximadamente un tercio de las especies eran cultivadas y el resto silvestres. Tres cuartos de las especies presentan una distribución natural en América, y las demás han sido introducidas de ultramar. Los datos muestran que el mayor número de especies utilizadas para fines medicinales se encuentran en los huertos. Esto implica nuevos retos debido a que los huertos familiares tradicionales están siendo utilizados para fines diversos, como la construcción de viviendas o establecimientos comerciales, ocasionando pérdida de germoplasma in situ y en consecuencia pérdida de la biodiversidad en este territorio del subtrópico mexicano.

  16. Monte Carlo Particle Lists: MCPL

    CERN Document Server

    Kittelmann, Thomas; Knudsen, Erik B; Willendrup, Peter; Cai, Xiao Xiao; Kanaki, Kalliopi

    2016-01-01

    A binary format with lists of particle state information, for interchanging particles between various Monte Carlo simulation applications, is presented. Portable C code for file manipulation is made available to the scientific community, along with converters and plugins for several popular simulation packages.

  17. Los municipios de la "otra Colombia" en la política de descentralización: Balance de la situación y propuestas

    Directory of Open Access Journals (Sweden)

    Alberto Maldonado

    2004-01-01

    Full Text Available En este documento se presenta un breve análisis del lugar que han ocupado los municipios pequeños y atrasados -los de la "Otra Colombia" en las políticas de descentralización y ordenamiento territorial durante las dos últimas décadas, analizar la situación actual y formular recomendaciones para una política de apoyo a este grupo de municipios, con énfasis en aquellos que presentan serios problemas de cultivos ilícitos y violencia. La idea central que orienta el documento es la necesidad de elaborar una política explícita de apoyo a los municipios pequeños y atrasados del país, con énfasis en aquellos afectados en especial por cultivos ilícitos y altos niveles de violencia, que se enmarque en los lineamientos generales de la descentralización pero que reconozca las particularidades de este conjunto de unidades territoriales. El documento desarrolla las siguientes partes: antecedentes de las políticas de descentralización y caracterización de los municipios de la «Otra Colombia»; los objetivos de la descentralización y el ordenamiento territorial; los instrumentos; los avances y resultados alcanzados; los factores explicativos de dichos avances y resultados; y los lineamientos de política.

  18. Recensión del libro: "La Arquitectura Escolar en Cantabria. Análisis de la arquitectura escolar en el municipio de Castro Urdiales"

    OpenAIRE

    Francisco Javier RODRÍGUEZ MÉNDEZ

    2012-01-01

    Recensión del libro "La Arquitectura Escolar en Cantabria: Análisis de la arquitectura escolar en el municipio de Castro Urdiales" de la autora Victoria Cabieces Ibarrondo, publicado en 2011 en Santander por la Consejería de Educación, Cultura y Deporte de Cantabria (ISBN 9788495302533).

  19. Faunistic patterns of leaf beetles (Coleoptera, Chrysomelidae) within elevational and temporal gradients in Sierra de San Carlos, Mexico.

    Science.gov (United States)

    Sánchez-Reyes, Uriel Jeshua; Niño-Maldonado, Santiago; Barrientos-Lozano, Ludivina; Clark, Shawn M; Jones, Robert W

    2016-01-01

    The study of biodiversity of Chrysomelidae in Mexico and its variation within ecological gradients has increased recently, although important areas in the country remain to be explored. We conducted a faunistic inventory and analyzed the elevational and temporal variation of leaf beetle communities in the Sierra de San Carlos, in the state of Tamaulipas, in northeastern Mexico. This is an area with high to extreme priority for conservation, and due to its insular geographical position and to the vegetational communities present, it must be considered as a sky island. We selected seven sample sites distributed in different elevations within three localities, and comprising different vegetational communities. At each site, we randomly delimited 12 sample plots of 400 m(2) where sampling was conducted by entomological sweep netting and collecting directly by hand. Sampling was conducted monthly at each plot, for a total of 1,008 samples between February 2013 and January 2014. By the end of the study, we had obtained a total of 3,081 specimens belonging to six subfamilies, 65 genera, and 113 species, with Trichaltica scabricula (Crotch, 1873) being recorded for first time in Mexico. Species richness was less than the values observed at other studies conducted in the same region, which is attributed to differences in the number of plant species and to the insular location of Sierra de San Carlos; however, the higher diversity values suggest a higher quality of natural resources and vegetational communities. No consistent pattern of leaf beetle communities was correlated with elevation, although higher values of species richness and diversity were obtained at the highest elevation site. The seasonal gradient showed that the rainy season is most favorable for leaf beetle communities. We found that species composition was different between sites and months, and also that there exists a significant association between the abundance obtained at each site and particular

  20. Mepraia spinolai in the Southeastern Pacific Ocean Coast (Chile) - First insular record and feeding pattern on the Pan de Azúcar Island

    OpenAIRE

    Hernán Sagua Franco; Jorge Araya Rojas; Jorge González Cortes; Iván Neira Cortes

    2000-01-01

    In a field collection performed at Pan de Azúcar Island in Northern Chile, 95 specimens representing all instars of Mepraia spinolai were collected. The intestinal contents of 55 specimens were examined for Trypanosoma cruzi infection and were found to be negative. This is the first record of an insular habitat for M. spinolai, where the insects had fed mainly on seabirds (78%), some on marine mammals (5%), and some on reptiles (7%).

  1. Epileptic seizure propagation from the second somatic sensory area to the fronto-medial region, by insular redistribution. A case report and a connectome description

    OpenAIRE

    Balogh Attila; Halász Péter; Fabó Dániel; Erőss Lóránd

    2015-01-01

    Introduction. The seizure propagation phenomenon by inducing remote symptoms brings several difficulties in finding the seizure onset and delineating the epileptic network which should be taken into consideration in epilepsy surgery. By demonstrating a difficult (MRI negative) epilepsy surgery case explored with invasive presurgical evaluation we highlight the importance to recognise the secondary sensory area and to explore the the parieto-opercular-insular-medial frontal network in certain ...

  2. Multiple Somatotopic Representations of Heat and Mechanical Pain in the Operculo-Insular Cortex: A High-Resolution fMRI Study

    OpenAIRE

    Baumgärtner, Ulf; Iannetti, Gian Domenico; Zambreanu, Laura; Stoeter, Peter; Treede, Rolf-Detlef; Tracey, Irene

    2010-01-01

    Whereas studies of somatotopic representation of touch have been useful to distinguish multiple somatosensory areas within primary (SI) and secondary (SII) somatosensory cortex regions, no such analysis exists for the representation of pain across nociceptive modalities. Here we investigated somatotopy in the operculo-insular cortex with noxious heat and pinprick stimuli in 11 healthy subjects using high-resolution (2 × 2 × 4 mm) 3T functional magnetic resonance imaging (fMRI). Heat stimuli (...

  3. Mepraia spinolai in the Southeastern Pacific Ocean Coast (Chile - First insular record and feeding pattern on the Pan de Azúcar Island

    Directory of Open Access Journals (Sweden)

    Hernán Sagua Franco

    2000-04-01

    Full Text Available In a field collection performed at Pan de Azúcar Island in Northern Chile, 95 specimens representing all instars of Mepraia spinolai were collected. The intestinal contents of 55 specimens were examined for Trypanosoma cruzi infection and were found to be negative. This is the first record of an insular habitat for M. spinolai, where the insects had fed mainly on seabirds (78%, some on marine mammals (5%, and some on reptiles (7%.

  4. Shell model Monte Carlo methods

    International Nuclear Information System (INIS)

    We review quantum Monte Carlo methods for dealing with large shell model problems. These methods reduce the imaginary-time many-body evolution operator to a coherent superposition of one-body evolutions in fluctuating one-body fields; resultant path integral is evaluated stochastically. We first discuss the motivation, formalism, and implementation of such Shell Model Monte Carlo methods. There then follows a sampler of results and insights obtained from a number of applications. These include the ground state and thermal properties of pf-shell nuclei, thermal behavior of γ-soft nuclei, and calculation of double beta-decay matrix elements. Finally, prospects for further progress in such calculations are discussed. 87 refs

  5. Kinematics of multigrid Monte Carlo

    International Nuclear Information System (INIS)

    We study the kinematics of multigrid Monte Carlo algorithms by means of acceptance rates for nonlocal Metropolis update proposals. An approximation formula for acceptance rates is derived. We present a comparison of different coarse-to-fine interpolation schemes in free field theory, where the formula is exact. The predictions of the approximation formula for several interacting models are well confirmed by Monte Carlo simulations. The following rule is found: For a critical model with fundametal Hamiltonian Η(φ), absence of critical slowing down can only be expected if the expansion of (Η(φ+ψ)) in terms of the shift ψ contains no relevant (mass) term. We also introduce a multigrid update procedure for nonabelian lattice gauge theory and study the acceptance rates for gauge group SU(2) in four dimensions. (orig.)

  6. Asynchronous Anytime Sequential Monte Carlo

    OpenAIRE

    Paige, Brooks; Wood, Frank; Doucet, Arnaud; Teh, Yee Whye

    2014-01-01

    We introduce a new sequential Monte Carlo algorithm we call the particle cascade. The particle cascade is an asynchronous, anytime alternative to traditional particle filtering algorithms. It uses no barrier synchronizations which leads to improved particle throughput and memory efficiency. It is an anytime algorithm in the sense that it can be run forever to emit an unbounded number of particles while keeping within a fixed memory budget. We prove that the particle cascade is an unbiased mar...

  7. Neural Adaptive Sequential Monte Carlo

    OpenAIRE

    Gu, Shixiang; Ghahramani, Zoubin; Turner, Richard E

    2015-01-01

    Sequential Monte Carlo (SMC), or particle filtering, is a popular class of methods for sampling from an intractable target distribution using a sequence of simpler intermediate distributions. Like other importance sampling-based methods, performance is critically dependent on the proposal distribution: a bad proposal can lead to arbitrarily inaccurate estimates of the target distribution. This paper presents a new method for automatically adapting the proposal using an approximation of the Ku...

  8. Parallel Monte Carlo reactor neutronics

    International Nuclear Information System (INIS)

    The issues affecting implementation of parallel algorithms for large-scale engineering Monte Carlo neutron transport simulations are discussed. For nuclear reactor calculations, these include load balancing, recoding effort, reproducibility, domain decomposition techniques, I/O minimization, and strategies for different parallel architectures. Two codes were parallelized and tested for performance. The architectures employed include SIMD, MIMD-distributed memory, and workstation network with uneven interactive load. Speedups linear with the number of nodes were achieved

  9. Adaptive Multilevel Monte Carlo Simulation

    KAUST Repository

    Hoel, H

    2011-08-23

    This work generalizes a multilevel forward Euler Monte Carlo method introduced in Michael B. Giles. (Michael Giles. Oper. Res. 56(3):607–617, 2008.) for the approximation of expected values depending on the solution to an Itô stochastic differential equation. The work (Michael Giles. Oper. Res. 56(3):607– 617, 2008.) proposed and analyzed a forward Euler multilevelMonte Carlo method based on a hierarchy of uniform time discretizations and control variates to reduce the computational effort required by a standard, single level, Forward Euler Monte Carlo method. This work introduces an adaptive hierarchy of non uniform time discretizations, generated by an adaptive algorithmintroduced in (AnnaDzougoutov et al. Raùl Tempone. Adaptive Monte Carlo algorithms for stopped diffusion. In Multiscale methods in science and engineering, volume 44 of Lect. Notes Comput. Sci. Eng., pages 59–88. Springer, Berlin, 2005; Kyoung-Sook Moon et al. Stoch. Anal. Appl. 23(3):511–558, 2005; Kyoung-Sook Moon et al. An adaptive algorithm for ordinary, stochastic and partial differential equations. In Recent advances in adaptive computation, volume 383 of Contemp. Math., pages 325–343. Amer. Math. Soc., Providence, RI, 2005.). This form of the adaptive algorithm generates stochastic, path dependent, time steps and is based on a posteriori error expansions first developed in (Anders Szepessy et al. Comm. Pure Appl. Math. 54(10):1169– 1214, 2001). Our numerical results for a stopped diffusion problem, exhibit savings in the computational cost to achieve an accuracy of ϑ(TOL),from(TOL−3), from using a single level version of the adaptive algorithm to ϑ(((TOL−1)log(TOL))2).

  10. Monomial Gamma Monte Carlo Sampling

    OpenAIRE

    Zhang, Yizhe; Wang, Xiangyu; Chen, Changyou; Fan, Kai; Carin, Lawrence

    2016-01-01

    We unify slice sampling and Hamiltonian Monte Carlo (HMC) sampling by demonstrating their connection under the canonical transformation from Hamiltonian mechanics. This insight enables us to extend HMC and slice sampling to a broader family of samplers, called monomial Gamma samplers (MGS). We analyze theoretically the mixing performance of such samplers by proving that the MGS draws samples from a target distribution with zero-autocorrelation, in the limit of a single parameter. This propert...

  11. Distortion of time interval reproduction in an epileptic patient with a focal lesion in the right anterior insular/inferior frontal cortices.

    Science.gov (United States)

    Monfort, Vincent; Pfeuty, Micha; Klein, Madelyne; Collé, Steffie; Brissart, Hélène; Jonas, Jacques; Maillard, Louis

    2014-11-01

    This case report on an epileptic patient suffering from a focal lesion at the junction of the right anterior insular cortex (AIC) and the adjacent inferior frontal cortex (IFC) provides the first evidence that damage to this brain region impairs temporal performance in a visual time reproduction task in which participants had to reproduce the presentation duration (3, 5 and 7s) of emotionally-neutral and -negative pictures. Strikingly, as compared to a group of healthy subjects, the AIC/IFC case considerably overestimated reproduction times despite normal variability. The effect was obtained in all duration and emotion conditions. Such a distortion in time reproduction was not observed in four other epileptic patients without insular or inferior frontal damage. Importantly, the absolute extent of temporal over-reproduction increased in proportion to the magnitude of the target durations, which concurs with the scalar property of interval timing, and points to an impairment of time-specific rather than of non temporal (such as motor) mechanisms. Our data suggest that the disability in temporal reproduction of the AIC/IFC case would result from a distorted memory representation of the encoded duration, occurring during the process of storage and/or of recovery from memory and leading to a deviation of the temporal judgment during the reproduction task. These findings support the recent proposal that the anterior insular/inferior frontal cortices would be involved in time interval representation. PMID:25223467

  12. Distinctive Roles of 5-aza-2′-deoxycytidine in Anterior Agranular Insular and Basolateral Amygdala in Reconsolidation of Aversive Memory Associated with Morphine in Rats

    Science.gov (United States)

    Liu, Peng; Zhang, JianJun; Li, Ming; Sui, Nan

    2016-01-01

    5-aza-2′-deoxycytidine (5-aza), an inhibitor of DNA methyltransferases (DNMTs), has been implicated in aversive memory and the function of brain region involved in processing emotion. However, little is known about the role of 5-aza in the reconsolidation of opiate withdrawal memory. In the present study, using the morphine-naloxone induced conditioned place aversion (CPA) model in rats, we injected 5-aza into agranular insular (AI), granular insular (GI), basolateral amygdala (BLA) and central amygdala (CeA) immediately after the memory retrieval and tested the behavioral consequences at 24 h, 7 and 14 days after retrieval test. We found that 5-aza injection into AI disrupted the reconsolidation of morphine-associated withdrawal memory, but 5-aza injection into GI had no impact on the reconsolidation. Meanwhile, 5-aza injection into BLA but not CeA attenuated the withdrawal memory trace 14 days later. However, 5-aza administration to rats, in the absence of memory reactivation, had no effect on morphine-associated withdrawal memory. These findings suggest that 5-aza interferes with the reconsolidation of opiate withdrawal memory, and the roles of insular and amygdala in reconsolidation are distinctive. PMID:27014010

  13. Distinctive Roles of 5-aza-2'-deoxycytidine in Anterior Agranular Insular and Basolateral Amygdala in Reconsolidation of Aversive Memory Associated with Morphine in Rats.

    Science.gov (United States)

    Liu, Peng; Zhang, JianJun; Li, Ming; Sui, Nan

    2016-01-01

    5-aza-2'-deoxycytidine (5-aza), an inhibitor of DNA methyltransferases (DNMTs), has been implicated in aversive memory and the function of brain region involved in processing emotion. However, little is known about the role of 5-aza in the reconsolidation of opiate withdrawal memory. In the present study, using the morphine-naloxone induced conditioned place aversion (CPA) model in rats, we injected 5-aza into agranular insular (AI), granular insular (GI), basolateral amygdala (BLA) and central amygdala (CeA) immediately after the memory retrieval and tested the behavioral consequences at 24 h, 7 and 14 days after retrieval test. We found that 5-aza injection into AI disrupted the reconsolidation of morphine-associated withdrawal memory, but 5-aza injection into GI had no impact on the reconsolidation. Meanwhile, 5-aza injection into BLA but not CeA attenuated the withdrawal memory trace 14 days later. However, 5-aza administration to rats, in the absence of memory reactivation, had no effect on morphine-associated withdrawal memory. These findings suggest that 5-aza interferes with the reconsolidation of opiate withdrawal memory, and the roles of insular and amygdala in reconsolidation are distinctive. PMID:27014010

  14. Distinctive roles of 5-Aza-2′-deoxycytidine in Anterior Agranular Insular and Basolateral Amygdala in Reconsolidation of aversive memory associated with Morphine in Rats

    Directory of Open Access Journals (Sweden)

    Peng eLiu

    2016-03-01

    Full Text Available 5-aza-2-deoxycytidine (5-aza, an inhibitor of DNA methyltransferases (DNMTs, has been implicated in aversive memory and the function of brain region which processing affect. However, little is known about the role of 5-aza in the reconsolidation of opiate withdrawal memory. In the present study, using the morphine-naloxone induced conditioned place aversion (CPA model in rats, we injected 5-aza into agranular insular (AI, granular insular (GI, basolateral amygdala (BLA and central amygdala (CeA immediately after the memory retrieval and tested the behavioral consequences at 24hours, 7 days and 14days after retrieval test. We found that 5-aza injection into AI disrupted the reconsolidation of morphine-associated withdrawal memory, but 5-aza injection into GI had no impact on the reconsolidation. Meanwhile, 5-aza injection into BLA but not CeA attenuated the withdrawal memory trace 14 days later. However, 5-aza administration to rats, in the absence of memory reactivation, had no effect on morphine-associated withdrawal memory. These findings suggest that 5-aza interfere with the reconsolidation of opiate withdrawal memory, and the roles of insular and amygdala in reconsolidation are distinctive.

  15. Extending canonical Monte Carlo methods

    Science.gov (United States)

    Velazquez, L.; Curilef, S.

    2010-02-01

    In this paper, we discuss the implications of a recently obtained equilibrium fluctuation-dissipation relation for the extension of the available Monte Carlo methods on the basis of the consideration of the Gibbs canonical ensemble to account for the existence of an anomalous regime with negative heat capacities C < 0. The resulting framework appears to be a suitable generalization of the methodology associated with the so-called dynamical ensemble, which is applied to the extension of two well-known Monte Carlo methods: the Metropolis importance sampling and the Swendsen-Wang cluster algorithm. These Monte Carlo algorithms are employed to study the anomalous thermodynamic behavior of the Potts models with many spin states q defined on a d-dimensional hypercubic lattice with periodic boundary conditions, which successfully reduce the exponential divergence of the decorrelation time τ with increase of the system size N to a weak power-law divergence \\tau \\propto N^{\\alpha } with α≈0.2 for the particular case of the 2D ten-state Potts model.

  16. Non statistical Monte-Carlo

    International Nuclear Information System (INIS)

    We have shown that the transport equation can be solved with particles, like the Monte-Carlo method, but without random numbers. In the Monte-Carlo method, particles are created from the source, and are followed from collision to collision until either they are absorbed or they leave the spatial domain. In our method, particles are created from the original source, with a variable weight taking into account both collision and absorption. These particles are followed until they leave the spatial domain, and we use them to determine a first collision source. Another set of particles is then created from this first collision source, and tracked to determine a second collision source, and so on. This process introduces an approximation which does not exist in the Monte-Carlo method. However, we have analyzed the effect of this approximation, and shown that it can be limited. Our method is deterministic, gives reproducible results. Furthermore, when extra accuracy is needed in some region, it is easier to get more particles to go there. It has the same kind of applications: rather problems where streaming is dominant than collision dominated problems

  17. Cooperación entre municipios y tercer sector en políticas sociales: mitos y realidades

    Directory of Open Access Journals (Sweden)

    Alejandro Navarro Arredondo

    2013-01-01

    Full Text Available El objetivo del artículo es analizar las percepciones de las organizaciones de la sociedad civil (OSC acerca de sus interacciones con municipios en el diseño, ejecución y evaluación de políticas sociales. En la primera sección se abordan las dimensiones teóricas y contextuales sobre la relación entre el tercer sector y el gobierno. En la segunda se describe el marco legal para el funcionamiento de las OSC en el ámbito local. En la tercera, se analiza una encuesta diseñada a partir de las dimensiones planteadas. Por último, se formulan algunas conclusiones e interrogantes para el desarrollo de futuras investigaciones.

  18. Diagnóstico de competitividad del sector productor de arracacha. Caso municipio de Boyacá (Colombia 2014

    Directory of Open Access Journals (Sweden)

    Diana Lizeth Rojas Cruz

    2016-07-01

    Full Text Available El presente artículo analiza las condiciones de competitividad del sector productor de arracacha en el municipio de Boyacá y su influencia en dicho territorio. Para ello, se emplean los modelos “cinco fuerzas” y “diamante de competitividad” desarrollados por el profesor Michael Porter. Los resultados obtenidos permitieron establecer un diagnóstico cualitativo sobre la situación actual y las perspectivas de la cadena, dilucidándose factores clave que deben intervenirse en pro de propuestas generadoras de valor y oportunidades encaminadas a la construcción de alternativas en el área agroindustrial, que faciliten el acceso a nuevos mercados y provean, tanto crecimiento sostenible para la región, como mejor calidad de vida para los agricultores.

  19. Tentativas de suicidio en el municipio de Valencia: evolución y distribución urbana.

    Directory of Open Access Journals (Sweden)

    J Gimeno Adelantado

    1993-01-01

    Full Text Available Se analizan las tentativas de suicidio registradas en los hospitales públicos del municipio de Valencia desde 1982 a 1985. La evolución temporal indica un mantenimiento de las tasas anuales, con un incremento relativo de la proporción de hombres y de los intervalos de edad de 15 a 29 y más de 60. La sobredosis de medicamentos tiende a disminuir, así como los ingresos, tanto en sala como en UCI. La distribución urbana revela la existencia de tres áreas de alto riesgo barrios "artificiales" creados por decisiones administrativas, barrios socialmente conflictivos, con tasas altas de delincuencia y drogadicción; y barrios de acogida de población inmigrante. En conjunto las tasas estandardizadas de tentativas presentan correlaciones significativas con todos los indicadores de deprivación social analizados.

  20. Tuberculosis notificada en cuatro municipios de la capital cubana Tuberculosis reported in four municipalities of the Cuban capital

    Directory of Open Access Journals (Sweden)

    Tamine Jordán Severo

    2011-09-01

    Full Text Available INTRODUCCIÓN: La detección de casos es la actividad fundamental de pesquisa que se realiza en Cuba y una de las estrategias fundamentales para lograr la eliminación de la tuberculosis como problema de salud pública. OBJETIVO: Describir algunas características encontradas en los casos de tuberculosis notificados en los municipios Boyeros, 10 de Octubre, Arroyo Naranjo y Cotorro, en el 2008. MÉTODOS: Se realizó un estudio descriptivo de los casos de tuberculosis notificados en el 2008, en cuatro municipios del sur de la capital del país. Estas personas fueron visitadas en sus hogares y se entrevistaron, utilizando un cuestionario adicional validado previamente. Se creó una base de datos y se procesó en Epi Info 2002. RESULTADOS: Se notificaron 59 casos de tuberculosis en estos cuatro municipios, los que mostraron tasas de incidencia de la enfermedad entre 6,2 y 10,1/100 000 habitantes. El 72,9 % de los casos se encontró entre 15 y 59 años y el 78 % fue del sexo masculino; el 86,4 % tuvo tuberculosis pulmonar y el 13,6 % falleció. El 91,5 % perteneció a grupos de riesgo, de estos fundamentalmente ancianos, alcohólicos y exreclusos. El 100 % de los fallecidos pertenecía a grupos de riesgo. CONCLUSIONES: Los cuatro municipios mostraron tasas de incidencia > 5/ 100 000 habitantes y todos excepto Arroyo Naranjo estuvieron por encima de la tasa nacional; predominó el grupo de edades de 15 a 59 años, el sexo masculino y la tuberculosis pulmonar con baciloscopia positiva, pertenecientes en su mayoría a grupos vulnerables importantes, en los cuales ocurrió la totalidad de los fallecidos.INTRODUCTION: The case detection is the fundamental activity of screening carried out in Cuba and one of the essential strategies to achieve the eradication of tuberculosis as a problem of public health. OBJECTIVE: To describe some characteristics found in the cases of tuberculosis reported in 2008 at the Boyeros, 10 de Octubre, Arroyo Naranjo and

  1. Plan integral de servicio social en municipios de muy alta marginación en el estado de Oaxaca

    Directory of Open Access Journals (Sweden)

    Guillermo Trejo Carbajal

    2013-10-01

    Full Text Available El plan de servicio social implantado por la UABJO, pretende la creación de cuatro Brigadas de Servicio Social integradas por estudiantes de diversas carreras, con el fin de atender a veinte municipios de las Sierras norte y sur en condiciones de muy alta marginación. El objetivo es incidir en la mejora de niveles de salud, vivienda, economía familiar, desarrollo urbano y sustentable. Desarrollando acciones múltiples de diagnósticos de necesidades esenciales, asesorías contables, administrativas, proyectos productivos de traspatio, alfabetización, normas de agua y residuos, sanitarios ecológicos para vivienda, huertos familiares, esterilización felina y canina, recreación y deportes. Plazo de ejecución seis meses y financiamiento del Gobierno Estatal.

  2. Impacto de las cartas de servicio en los empleados del área deportiva de mancomunidades de municipios de Extremadura

    Directory of Open Access Journals (Sweden)

    Alberto Bl\\u00E1zquez Manzano

    2013-01-01

    Full Text Available El objetivo del estudio fue conocer el impacto de las cartas de servicios para los empleados del área deportiva de mancomunidades de municipios extremeñas. Participaron 114 dinamizadores deportivos y 29 gerentes. Se analizaron los beneficiarios, dificultad en elaboración, aplicación y utilidad de las cartas de servicios; así como la concordancia entre la opinión de empleados sobre elementos y finalidades que deben centrar las acciones de calidad y lo expresado en dicho documento. Los resultados reflejan alineamiento relativo en la opinión de empleados entre sí y alta divergencia con el perfil de los indicadores que recogen las cartas de servicios. La utilidad del documento tiene alta valoración, mientras que el beneficio para destinatarios, dificultad de elaboración y aplicación, es media.

  3. Caracterización del estado de la biodiversidad en el municipio Guamá, Santiago de Cuba

    OpenAIRE

    2010-01-01

    Se ofrece una compilación de los materiales existentes sobre el status de la biodiversidad del municipio Guamá. Las principales problemáticas ambientales son: la antropización producto de migraciones incontroladas de la población hacia las áreas próximas a la línea de costa, vertimientos de desechos sólidos y líquidos en playas y ríos, deficiente red de alcantarillado, presencia de 14 despulpadoras de café, fragmentación de hábitat, la deforestación, erosión de los suelos e introd...

  4. Caracterización de la Violencia Intrafamiliar en mujeres del municipio Santa Ana. Beni Bolivia Junio-Diciembre 2010.

    Directory of Open Access Journals (Sweden)

    Yacquelynes Corona-Hechavarria

    2013-01-01

    Full Text Available Abordó una investigación descriptiva en municipio Santa Ana, Beni en Bolivia para determinar el comportamiento de las mujeres que sufren violencia intrafamiliar en el 2010. Los datos se obtuvieron mediante la revisión de las fichas familiares e individuales, se realizaron encuestas directas a las mujeres que sufrían violencia intrafamiliar. Se concluyo que el grupo de edad más afectado fue el de 25-34, con nivel de escolaridad secundaria, predominaron las amas de casa, se encontraron pacientes que reconocían sufrir algún tipo de violencia, las causas más frecuentes fueron los celos y el alcoholismo. Se recomendó continuar la investigación para lograr un incremento del conocimiento sobre la violencia intrafamiliar en la mujer.

  5. Estudio léxico en el corregimiento de Boraudo: municipio de Lloró, Chocó

    OpenAIRE

    Gómez Figueroa, Fabio Alirio

    2014-01-01

    En el presente estudio, se identifican y analizan algunas variables léxicas evidentes en las conversaciones espontáneas y libres de los habitantes del corregimiento de Boraudo, municipio de Lloró Chocó. En el desarrollo del estudio que se ofrece se tuvo en cuenta la categorización léxica de varios campos semánticos tales como: léxico sobre la minería artesanal; la pesca artesanal en ríos y riachuelos; navegación en el río Atrato; léxico sobre la alimentación campesina; léxico sobre prendas de...

  6. Percepción del riesgo de inundaciones en municipios litorales alicantinos: ¿aumento de la vulnerabilidad?

    Directory of Open Access Journals (Sweden)

    Antonio M. Rico Amorós

    2010-01-01

    Full Text Available Durante las dos últimas décadas, el litoral alicantino ha registrado un fuerte incremento de la vulnerabilidad a los fenómenos de inundación como consecuencia del aumento a la exposición física a los mismos, propiciada por la expansión de nuevas áreas residenciales urbano-turísticas. En este artículo, se analiza la percepción social de las inundaciones, valorando las variables de resistencia y resiliencia frente a este riesgo natural. Para ello, se ofrecen los resultados de las encuestas de percepción llevadas a cabo a la población permanente y estacional afectada por las inundaciones en municipios litorales alicantinos.

  7. Atlas digital: uma contribuicao para o sistema de informacoes do municipio de Sao Joao de Meriti – RJ

    Directory of Open Access Journals (Sweden)

    Ricardo Araujo Mathias

    2011-07-01

    Full Text Available Um Atlas Digital é um atlas que pode ser acessado atraves de um computador, sendo possivel a utilizacao de uma variada gama de temas, formatos e escalas. Neste trabalho apresenta-se um prototipo de Atlas Digital como colaboracao ao Sistema de Informacao Municipal – SIM, para o municipio de Sao João de Meriti, RJ. O SIM tem como meta os servicos municipais, sendo as suas informacoes fundamentais para a melhoria da gestao das prefeituras. A pesquisa foi direcionada para o tema da habitabilidade, que consiste num conjunto de condicoes voltadas para a criacao de um habitat saudavel, conseguinte foram trabalhados os subtemas: infraestrutura de abastecimento de agua, esgoto, coleta de lixo, saude e educacao.

  8. Inventario preliminar de las especies de la familia Orquidaceae en La Vereda La Granja del municipio de Sasaima, Cundinamarca, Colombia

    Directory of Open Access Journals (Sweden)

    Ordóñez B. Juan Camilo

    2005-12-01

    Full Text Available La familia Orquidaceae tiene la mayor diversidad del reino vegetal, presenta variaciones en cuanto al hábitat, floración, polinización, entre otros aspectos. Colombia registra aproximadamente 3.500 especies en 250 géneros, representando el 10% de la diversidad de la vegetación mundial. Este trabajo presenta un inventario preliminar, sobre las orquidáceas de la Vereda “La Granja” del municipio de Sasaima, Cundinamarca, Colombia. El muestreo se realizó en transectos desde la zona urbana municipal, por la carretera que conduce al municipio de la Vega, hasta “La Ye” ubicada a 500 m del río Gualiva, abarcando un total de 10 km. El trabajo en campo incluyó una ficha morfotaxonómica de caracterización, destacando: descripción del hábitat y especie, condiciones ambientales, épocas de floración, abundancia y huéspedes en caso de epifitismos. La identificación de géneros se basó en las claves de Gentry y Valdivieso, y la de especies se hizo por comparación de muestras y fotografías con la publicación de Villegas. Se registraron 41 especies agrupadas en 27 géneros, de estos se destaca Epidendrum. El 56% de las especies son poco comunes, y solo el 7,3% muy abundantes. El hábitat más común es el Epífito. La época de mayor floración se encuentra entre abril-marzo.

  9. Municipio, identidad cultural y comunidades indígenas. El caso huarpe en el noreste de Mendoza

    Directory of Open Access Journals (Sweden)

    Leticia Saldi

    2013-06-01

    Full Text Available En el presente artículo analizamos cómo funcionarios de la Municipalidad de Lavalle representan e interpelan a las comunidades indígenas huarpe situadas en el área no irrigada del noreste de Mendoza, área situada en el departamento de Lavalle. Éste se encuentra dividido socioterritorialmente en dos espacios. Uno irrigado, caracterizado como área de progreso, de producción agrícola y de herencia europea y el otro no irrigado, representado como área de atraso, de producción ganadera y de herencia precolonial. A partir de un análisis etnográfico, analizamos cómo el municipio gestiona local y cotidianamente la diversidad étnica, cultural, económica y política. Concluimos que las formas con que los funcionarios interpelan a las comunidades indígenas y a sus integrantes son en base a un doble movimiento, uno de reconocimiento explícito y el otro de individualización, invisibilización y deslegitimación hacia las mismas. Al invisibilizar a las comunidades como sujetos colectivos, funcionarios municipales intentan dar una identidad común que incorpore a los espacios irrigados y no irrigados y a sus poblaciones como pertenecientes a un mismo territorio, el departamental, a la vez que mantenga la jerarquización entre ambos. Al realizar este movimiento, el municipio se erige como el unificador y contenedor de ambos espacios y de los distintos grupos socio-étnicos que los integran.

  10. Guía estructurada bajo modelo Escuela Nueva para la enseñanza de Física en el grado quinto (5°) de la escuela rural de Matanzas de la Institución Educativa Carlos Ramón Repizo Cabrera

    OpenAIRE

    Córdoba Claros , Zoila Piedad

    2013-01-01

    Esta investigación, busca que las Instituciones Educativas inicien la enseñanza y aprendizaje de la Física como asignatura independiente de las Ciencias Naturales a los estudiantes de Básica Primaria; para tal caso se elaboró una cartilla de Física para el grado quinto de la Escuela Rural de Matanzas de la Institución Educativa Carlos Ramón Repizo ubicada en el municipio de San Agustín del departamento del Huila, que contiene guías diseñadas bajo el Modelo Escuela nueva. En consecuencia a...

  11. Bacterias fijadoras asimbióticas de nitrógeno de la zona agrícola de San Carlos. Córdoba, Colombia

    OpenAIRE

    Lara Mantilla Cecilia; Villalba Anaya Mara; Oviedo Zumaqué Luis Eliécer

    2007-01-01

    Se aislaron bacterias diazotróficas de los géneros Azotobacter sp y Azospirrillum sp a partir de la rizosfera de cultivos de plátano, pastos, maíz y de rastrojos (zonas sin cultivar) en el municipio de San Carlos (Valle del Sinú medio en el departamento de Córdoba, Colombia). Las poblaciones microbianas se identificaron mediante pruebas bioquímicas y observación macroscópica y microscópica con tinción de Gram en diferentes medios de cultivo: a) Burk´s, Asbhy y Jensen´s, (género Azotobacter sp...

  12. San Carlos: Un modelo de conexión social en medio de la violencia

    Directory of Open Access Journals (Sweden)

    Héctor Fabio Guerrero Berrío

    2015-12-01

    Full Text Available El presente ensayo analiza la dinámica que ha tenido el conflicto armado en el municipio de San Carlos, Antioquía, durante la última década del siglo XX hasta la actualidad. Específicamente, analiza los daños morales, psicológicos y políticos que han generado las masacres de las veredas El Chocó y Dos Quebradas, así como las acciones de resistencia social que ha realizado la comunidad para la construcción de una nueva realidad a pesar de la violencia. Lo anterior sugiere la importancia de comprender el ejercicio de reflexión ética y de la memoria que han realizado las víctimas para configurar lo que, de acuerdo a la óptica de Iris Young, se denominaría un modelo de conexión social, y que les ha permitido asumir responsabilidades colectivas  para hacer frente a las injusticias estructurales que han padecido.

  13. 经侧裂入路切除岛叶海绵状血管畸形%Surgical resection of insular cavernomas with a transsylvian approach

    Institute of Scientific and Technical Information of China (English)

    王峰; 刘阳; 刘诤; 宋子木; 李宗正; 孙涛

    2014-01-01

    Objective To explore the surgical strategy for insular cavernous malformations (CMs).Methods Between Dec.2007 and Aug.2013,4 patients with insular CMs were treated surgically through transsylvian approach by using image guidance system (neuronavigation in two cases,ultrasound in four cases).Results The seizure was the initial symptom in 4 patients with insular CMs.The image guidance system provided high-quality intraoperative imaging and guided the perfect operative approach of insular cortex dissection.All CMs were completely removed via transsylvian-transinsular approach.The mean follow-up period was 36.75 months (ranged from 3 to 72 months).Permanent neurologic morbidity after surgery was observed in 1 patient.One patient with dominant hemisphere lesion had temporary dysphonia,and the language function was recovered after 1 week.4 patients were Engel class Ⅰ.Conclusions Surgical resection of insular CMs through transsylvian approach was safe.Neuronavigation and intraoperative ultrasound were recommended,especially for patients whose lesion was located in the dominant hemisphere.%目的 探讨岛叶海绵状血管畸形(CMs)手术治疗方法与效果.方法 回顾性分析2007年12月至2013年8月手术治疗的4例岛叶CMs患者,采用术中B超(2例联合神经导航)辅助下经侧裂入路切除岛叶CMs,分析手术策略及术后神经功能状态.结果 4例岛叶CMs患者,均以癫痫发作为首发症状,经侧裂-经岛叶入路完整切除CMs.术后随访3~ 72个月(平均36.75个月),1例患者术后神经学恶化,永久神经学缺陷;1例出现语言缺陷,1周后逐渐恢复.Engel疗效分级,4例患者癫痫预后均为Ⅰ级.结论 经侧裂入路可安全可靠的暴露并切除岛叶CMs;神经导航、术中B超可为成功切除岛叶CMs提供指导.

  14. Neural correlates of the ‘good life’: eudaimonic well-being is associated with insular cortex volume

    Science.gov (United States)

    Kanai, Ryota; Rees, Geraint; Bates, Timothy C.

    2014-01-01

    Eudaimonic well-being reflects traits concerned with personal growth, self-acceptance, purpose in life and autonomy (among others) and is a substantial predictor of life events, including health. Although interest in the aetiology of eudaimonic well-being has blossomed in recent years, little is known of the underlying neural substrates of this construct. To address this gap in our knowledge, here we examined whether regional gray matter (GM) volume was associated with eudaimonic well-being. Structural magnetic resonance images from 70 young, healthy adults who also completed Ryff’s 42-item measure of the six core facets of eudaimonia, were analysed with voxel-based morphometry techniques. We found that eudaimonic well-being was positively associated with right insular cortex GM volume. This association was also reflected in three of the sub-scales of eudaimonia: personal growth, positive relations and purpose in life. Positive relations also showed a significant association with left insula volume. No other significant associations were observed, although personal growth was marginally associated with left insula, and purpose in life exhibited a marginally significant negative association with middle temporal gyrus GM volume. These findings are the first to our knowledge linking eudaimonic well-being with regional brain structure. PMID:23512932

  15. Endocannabinoid regulation of nausea is mediated by 2-arachidonoylglycerol (2-AG) in the rat visceral insular cortex.

    Science.gov (United States)

    Sticht, Martin A; Limebeer, Cheryl L; Rafla, Benjamin R; Abdullah, Rehab A; Poklis, Justin L; Ho, Winnie; Niphakis, Micah J; Cravatt, Benjamin F; Sharkey, Keith A; Lichtman, Aron H; Parker, Linda A

    2016-03-01

    Cannabinoid (CB) agonists suppress nausea in humans and animal models; yet, their underlying neural substrates remain largely unknown. Evidence suggests that the visceral insular cortex (VIC) plays a critical role in nausea. Given the expression of CB1 receptors and the presence of endocannabinoids in this brain region, we hypothesized that the VIC endocannabinoid system regulates nausea. In the present study, we assessed whether inhibiting the primary endocannabinoid hydrolytic enzymes in the VIC reduces acute lithium chloride (LiCl)-induced conditioned gaping, a rat model of nausea. We also quantified endocannabinoid levels during an episode of nausea, and assessed VIC neuronal activation using the marker, c-Fos. Local inhibition of monoacylglycerol lipase (MAGL), the main hydrolytic enzyme of 2-arachidonylglycerol (2-AG), reduced acute nausea through a CB1 receptor mechanism, whereas inhibition of fatty acid amide hydrolase (FAAH), the primary catabolic enzyme of anandamide (AEA), was without effect. Levels of 2-AG were also selectively elevated in the VIC during an episode of nausea. Inhibition of MAGL robustly increased 2-AG in the VIC, while FAAH inhibition had no effect on AEA. Finally, we demonstrated that inhibition of MAGL reduced VIC Fos immunoreactivity in response to LiCl treatment. Taken together, these findings provide compelling evidence that acute nausea selectively increases 2-AG in the VIC, and suggests that 2-AG signaling within the VIC regulates nausea by reducing neuronal activity in this forebrain region. PMID:26541329

  16. Land Cover Change and Decoupling of ENSO and fires in insular Southeast Asia from 2001-2010

    Science.gov (United States)

    Fuller, D. O.

    2011-12-01

    Eight-day active fire time series (2001-May 2010) in western, insular Southeast Asia were analyzed to evaluate whether the relationship between the El Niño Southern Oscillation (ENSO) and fires has changed through time consistent with the hypothesis that fires and climate forcings are becoming decoupled as deforestation has continued in the region. The study period was marked by three major fire peaks in 2002, 2006 and 2009-2010 coinciding with three El Niño events. Maximum cross correlation coefficients (MCC) between lagged ENSO sea-surface temperature indices and fire counts (raw and seasonally detrended) were modest (≤ 0.50) and showed a general decrease for most land cover types from 2001-2006 to 2007-May 2010. A notable exception was peat swamp forest where the MCC increased slightly between the two periods for all indices except Niño3. A measure of annual seasonality also revealed that fires in peat swamp forest, lowland forest and secondary formations from 2007-May 2010 were more seasonal than fires during 2001-2006. Overall, the evidence suggests that fires and ENSO are becoming decoupled in the region and that forest types such as peat swamp and lowland forest may be experiencing more seasonal fires. E

  17. Correlation of shear deformation and heat flow along the Coast and Insular belts of Western British Columbia, Canada

    Science.gov (United States)

    Erkan, K.; Blackwell, D.

    2007-12-01

    Western margin of North American cordillera is characterized by a continuous band of low heat flow with varying magnitudes. These zones are associated with the outer arc regions of the present or recent subduction of Kula/Farallon/Juan de Fuca plates under North America. The subduction of Farallon/Kula plate ceased some 20 My ago north of Juan de Fuca plate and the cessation resulted in the formation of a transform boundary carried by the Quinn Charlotte and associated sub-parallel shear zones between Pacific and North American plates. The extinct outer arc covering the Coast and Insular belts of western British Columbia show thermal deficit constrained by surface heat flow measurements. A detailed study of heat flow variations and the locations of the shear failure zones show close correlations. Our study support that these remnant thermal deficit areas of extinct outer arc blocks in the western border of the Cordillera play an important role in the style of deformation of the transform boundary between Western North America and Pacific plates.

  18. In favor of general probability distributions: lateral prefrontal and insular cortices respond to stimulus inherent, but irrelevant differences.

    Science.gov (United States)

    Mestres-Missé, Anna; Trampel, Robert; Turner, Robert; Kotz, Sonja A

    2016-04-01

    A key aspect of optimal behavior is the ability to predict what will come next. To achieve this, we must have a fairly good idea of the probability of occurrence of possible outcomes. This is based both on prior knowledge about a particular or similar situation and on immediately relevant new information. One question that arises is: when considering converging prior probability and external evidence, is the most probable outcome selected or does the brain represent degrees of uncertainty, even highly improbable ones? Using functional magnetic resonance imaging, the current study explored these possibilities by contrasting words that differ in their probability of occurrence, namely, unbalanced ambiguous words and unambiguous words. Unbalanced ambiguous words have a strong frequency-based bias towards one meaning, while unambiguous words have only one meaning. The current results reveal larger activation in lateral prefrontal and insular cortices in response to dominant ambiguous compared to unambiguous words even when prior and contextual information biases one interpretation only. These results suggest a probability distribution, whereby all outcomes and their associated probabilities of occurrence-even if very low-are represented and maintained. PMID:25523107

  19. Insular identity and urban contexts: representations of the local in the construction of an image of Palma (Mallorca, Balearic Islands

    Directory of Open Access Journals (Sweden)

    Mercè Picornell

    2014-11-01

    Full Text Available This article analyses the relationship between island and city in the configuration of an insular identity. The hypothesis addresses the special visibility that, in the case of small islands, results from the confrontation between two relevant singularities – the city and the island – in the symbolic conceptualization of territory. The opposition between island contexts and urban spaces is thus considered in terms of the local/global and rural/urban binaries. These are analysed in contemporary cultural representations of the relationship between the island of Mallorca and its historical and administrative capital, Palma. Since the 1960s, Mallorca has become a mass tourism destination with a considerable demographic impact, especially in the capital, which is the island’s gateway for both tourism and immigration. This paper considers geographical, literary and media discourses along with particular mass-consumption cultural products to argue that Palma is represented as a predatory ‘monster’ devouring the island’s ‘local’ identity. It is argued that different types of neo-ruralism have emerged and reinforced the opposition between the island and the city. This opposition underlies a process of counter-acculturation that delineates and strengthens Mallorcan self-representation in a context defined by an increasingly diverse population as a result of tourism and migratory flows.

  20. Renewable energy sources, promotion and integration for the sustainable development of insular regions of Europe: the respire project

    Energy Technology Data Exchange (ETDEWEB)

    Vigotti, R. [EnelGreenPower, Rome (Italy); Cariello, F.; Tondi, G. [ETA-Renewable Energies, Florence (Italy); Veyan, P. [Transenergie, Ecully (France); Granel, N.M. [Cegelec Sud Ouest, Toulose (France); Peirano, E. [ADEME, Paris (France)

    2003-07-01

    RESPIRE project, co-financed by European Commission in the framework of the fifth framework programme, started on 1 March 2003, is a global strategic initiative taken at the level of seven European countries in order to promote the achievement of 100% of RES in the electricity consumption of the insular territories of the Union. 5 islands have been selected to start with strong local commitment the path toward ''sustainable communities'': Islay island (Scotland, UK), Sein island (France), Hoedic island (France), Giglio island (Italy), Panarea island (Italy). These islands are of different sizes, ranging from 150 to over 3000 peoples, both in the northern part and the southern part of Europe. One of these islands have already started the implementation of RES, while the other did not. Among other demonstration projects 2 important example of hybrid systems are foreseen to be implemented during the project. The first innovative hybrid solution will be realized in Ile de sein in the north-western atlantic coast of france: here a 400 kW wind plant will be coupled with an uniblock uninterrupted dynamic alimentation together with a set of batteries and 3 existing diesel. Another RESPIRE hybrid system will be implemented in Panarea island, located in Southern Italy. Here a 50 kWp PV generator will be coupled with 6 small wind turbines (15kW), together with a battery storage unit. Also in this case the hybrid system will feed in power to the local grid. (orig.)

  1. Forward physics Monte Carlo (FPMC)

    Czech Academy of Sciences Publication Activity Database

    Boonekamp, M.; Juránek, Vojtěch; Kepka, Oldřich; Royon, C.

    Hamburg : Verlag Deutsches Elektronen-Synchrotron, 2009 - (Jung, H.; De Roeck, A.), s. 758-762 ISBN N. [HERA and the LHC workshop series on the implications of HERA for LHC physics. Geneve (CH), 26.05.2008-30.05.2008] R&D Projects: GA MŠk LC527; GA MŠk LA08032 Institutional research plan: CEZ:AV0Z10100502 Keywords : forward physics * diffraction * two-photon * Monte Carlo Subject RIV: BF - Elementary Particles and High Energy Physics http://arxiv.org/PS_cache/arxiv/pdf/0903/0903.3861v2.pdf

  2. Carlos Restrepo. Un verdadero Maestro

    OpenAIRE

    Pelayo Correa

    2009-01-01

    Carlos Restrepo fue el primer profesor de Patología y un miembro ilustre del grupo de pioneros que fundaron la Facultad de Medicina de la Universidad del Valle. Estos pioneros convergieron en Cali en la década de 1950, en posesión de un espíritu renovador y creativo que emprendió con mucho éxito la labor de cambiar la cultura académica del Valle del Cauca. Ellos encontraron una sociedad apacible, que disfrutaba de la generosidad de su entorno, sin deseos de romper las tradiciones centenarias...

  3. Estudio eco-epidemiológico de la tripanosomiasis americana en el municipio de Amalfi (Antioquia

    Directory of Open Access Journals (Sweden)

    J. Arboleda

    2000-02-01

    Full Text Available

    El departamento de Antioquia no ha sido considerado endémico para la enfermedad de Chagas, sin embargo en el nordeste antioqueño, probablemente ocasionado por la tala y quema excesivas y la creciente deforestación para establecer medios de producción agrícola y ganadera, en las áreas naturales, se ha observado la aparición de insectos triatominos al interior de viviendas rurales, alimentándose de sus habitantes.

    Esta situación motivó la realización de un estudio ecoepidemiológico de Tripanosomiasis americana en nueve veredas del municipio de Amalfi con el propósito de identificar las especies de triatominos presentes en la zona, el grado de domiciliación, el índice de infección natural por Trypanosoma cruzi, los porcentajes de infección de animales domésticos (caninos y de mamíferos silvestres, la determinación de la seroprevalencia humana y finalmente la identificación de las acciones del hombre que están llevando a los triatominos a las viviendas para refugio y alimentación.

    En las veredas estudiadas se capturaron 196 triatominos, consideradas especies silvestres: Panstrongylus geniculatus (49%, P. rufotuberculatus (47% y Triatoma dispar (3%. El índice de infestación domiciliaria fue 14.53 % y las veredas con mayor infestación fueron Montebello (32.73 % y La Gardenia (27.5 %.

    Igualmente teniendo en cuenta el total de insectos infectados naturalmente por T. cruzi, fueron estas dos veredas las que obtuvieron el mayor porcentaje de infección 43.75 % y 25.0 % respectivamente.

    En viviendas de la vereda La Gardenia se hallaron huevos y ninfas de P

  4. Monte Carlo techniques in radiation therapy

    CERN Document Server

    Verhaegen, Frank

    2013-01-01

    Modern cancer treatment relies on Monte Carlo simulations to help radiotherapists and clinical physicists better understand and compute radiation dose from imaging devices as well as exploit four-dimensional imaging data. With Monte Carlo-based treatment planning tools now available from commercial vendors, a complete transition to Monte Carlo-based dose calculation methods in radiotherapy could likely take place in the next decade. Monte Carlo Techniques in Radiation Therapy explores the use of Monte Carlo methods for modeling various features of internal and external radiation sources, including light ion beams. The book-the first of its kind-addresses applications of the Monte Carlo particle transport simulation technique in radiation therapy, mainly focusing on external beam radiotherapy and brachytherapy. It presents the mathematical and technical aspects of the methods in particle transport simulations. The book also discusses the modeling of medical linacs and other irradiation devices; issues specific...

  5. Monte Carlo primer for health physicists

    International Nuclear Information System (INIS)

    The basic ideas and principles of Monte Carlo calculations are presented in the form of a primer for health physicists. A simple integral with a known answer is evaluated by two different Monte Carlo approaches. Random number, which underlie Monte Carlo work, are discussed, and a sample table of random numbers generated by a hand calculator is presented. Monte Carlo calculations of dose and linear energy transfer (LET) from 100-keV neutrons incident on a tissue slab are discussed. The random-number table is used in a hand calculation of the initial sequence of events for a 100-keV neutron entering the slab. Some pitfalls in Monte Carlo work are described. While this primer addresses mainly the bare bones of Monte Carlo, a final section briefly describes some of the more sophisticated techniques used in practice to reduce variance and computing time

  6. Interacting Particle Markov Chain Monte Carlo

    OpenAIRE

    Rainforth, Tom; Naesseth, Christian A.; Lindsten, Fredrik; Paige, Brooks; van de Meent, Jan-Willem; Doucet, Arnaud; Wood, Frank

    2016-01-01

    We introduce interacting particle Markov chain Monte Carlo (iPMCMC), a PMCMC method that introduces a coupling between multiple standard and conditional sequential Monte Carlo samplers. Like related methods, iPMCMC is a Markov chain Monte Carlo sampler on an extended space. We present empirical results that show significant improvements in mixing rates relative to both non-interacting PMCMC samplers and a single PMCMC sampler with an equivalent total computational budget. An additional advant...

  7. Mean field simulation for Monte Carlo integration

    CERN Document Server

    Del Moral, Pierre

    2013-01-01

    In the last three decades, there has been a dramatic increase in the use of interacting particle methods as a powerful tool in real-world applications of Monte Carlo simulation in computational physics, population biology, computer sciences, and statistical machine learning. Ideally suited to parallel and distributed computation, these advanced particle algorithms include nonlinear interacting jump diffusions; quantum, diffusion, and resampled Monte Carlo methods; Feynman-Kac particle models; genetic and evolutionary algorithms; sequential Monte Carlo methods; adaptive and interacting Marko

  8. Multidimensional stochastic approximation Monte Carlo.

    Science.gov (United States)

    Zablotskiy, Sergey V; Ivanov, Victor A; Paul, Wolfgang

    2016-06-01

    Stochastic Approximation Monte Carlo (SAMC) has been established as a mathematically founded powerful flat-histogram Monte Carlo method, used to determine the density of states, g(E), of a model system. We show here how it can be generalized for the determination of multidimensional probability distributions (or equivalently densities of states) of macroscopic or mesoscopic variables defined on the space of microstates of a statistical mechanical system. This establishes this method as a systematic way for coarse graining a model system, or, in other words, for performing a renormalization group step on a model. We discuss the formulation of the Kadanoff block spin transformation and the coarse-graining procedure for polymer models in this language. We also apply it to a standard case in the literature of two-dimensional densities of states, where two competing energetic effects are present g(E_{1},E_{2}). We show when and why care has to be exercised when obtaining the microcanonical density of states g(E_{1}+E_{2}) from g(E_{1},E_{2}). PMID:27415383

  9. Single scatter electron Monte Carlo

    Energy Technology Data Exchange (ETDEWEB)

    Svatos, M.M. [Lawrence Livermore National Lab., CA (United States)|Wisconsin Univ., Madison, WI (United States)

    1997-03-01

    A single scatter electron Monte Carlo code (SSMC), CREEP, has been written which bridges the gap between existing transport methods and modeling real physical processes. CREEP simulates ionization, elastic and bremsstrahlung events individually. Excitation events are treated with an excitation-only stopping power. The detailed nature of these simulations allows for calculation of backscatter and transmission coefficients, backscattered energy spectra, stopping powers, energy deposits, depth dose, and a variety of other associated quantities. Although computationally intense, the code relies on relatively few mathematical assumptions, unlike other charged particle Monte Carlo methods such as the commonly-used condensed history method. CREEP relies on sampling the Lawrence Livermore Evaluated Electron Data Library (EEDL) which has data for all elements with an atomic number between 1 and 100, over an energy range from approximately several eV (or the binding energy of the material) to 100 GeV. Compounds and mixtures may also be used by combining the appropriate element data via Bragg additivity.

  10. 1-D EQUILIBRIUM DISCRETE DIFFUSION MONTE CARLO

    Energy Technology Data Exchange (ETDEWEB)

    T. EVANS; ET AL

    2000-08-01

    We present a new hybrid Monte Carlo method for 1-D equilibrium diffusion problems in which the radiation field coexists with matter in local thermodynamic equilibrium. This method, the Equilibrium Discrete Diffusion Monte Carlo (EqDDMC) method, combines Monte Carlo particles with spatially discrete diffusion solutions. We verify the EqDDMC method with computational results from three slab problems. The EqDDMC method represents an incremental step toward applying this hybrid methodology to non-equilibrium diffusion, where it could be simultaneously coupled to Monte Carlo transport.

  11. Monte Carlo Application ToolKit (MCATK)

    International Nuclear Information System (INIS)

    Highlights: • Component-based Monte Carlo radiation transport parallel software library. • Designed to build specialized software applications. • Provides new functionality for existing general purpose Monte Carlo transport codes. • Time-independent and time-dependent algorithms with population control. • Algorithm verification and validation results are provided. - Abstract: The Monte Carlo Application ToolKit (MCATK) is a component-based software library designed to build specialized applications and to provide new functionality for existing general purpose Monte Carlo radiation transport codes. We will describe MCATK and its capabilities along with presenting some verification and validations results

  12. Prevalencia de desnutrición en niños tarahumaras menores de cinco años en el municipio de Guachochi, Chihuahua

    OpenAIRE

    Monárrez Joel; Martínez Homero

    2000-01-01

    OBJETIVO: Determinar la prevalencia de desnutrición en niños tarahumaras menores de cinco años en el municipio de Guachochi, Chihuahua, México. MATERIAL Y MÉTODOS: Durante el verano de 1996, fueron muestreados 450 niños, representativos de 62 comunidades, estratificadas por el tamaño de su población. La muestra representa 12.2% del total de tarahumaras del municipio. Para cada uno de los índices antropométricos peso/edad, peso/talla y talla/edad se calculó la desviación en puntaje Z de cada o...

  13. El Procede y el Piso en la incorporación del suelo de propiedad social a usos urbanos en los municipios conurbados de la ZMCM

    Directory of Open Access Journals (Sweden)

    Lucy Nelly Maya González

    2004-01-01

    Full Text Available En este artículo se revisan los mecanismos de incorporación regulada del suelo de origen social1 al desarrollo urbano en el ámbito de los municipios conurbados de la Zona Metropolitana de la Ciudad de México (ZMCM. A diez años de las modificaciones al artículo 27 constitucional se explora la forma en que los programas Procede y Piso han participado en la regulación del cambio de uso de suelo de rural a urbano, los factores que han influido en que los ejidatarios hayan decidido utilizar los nuevos mecanismos de desincorporación del régimen de propiedad social y la posición de los distintos actores involucrados (ejidatarios, Sector Agrario, Corett, desarrolladores privados y municipios ante estos mecanismos.

  14. Los conocimientos tradicionales de la palma datilera y sus deri-vados como atractivo turístico-cultural del municipio Díaz, Estado Nueva Esparta

    Directory of Open Access Journals (Sweden)

    Bracho Toro, Cecilia

    2007-01-01

    Full Text Available The actual state of the traditional knowledge about the date palm, its products and use as a cultural touristic attraction in Municipio Díaz, Nueva Esparta state, is diagnosticated. A descriptive and field study of the community of Fuentidueño, using the semi-structured interviews was made. The com-munity has an amount of traditional knowledge due to its wisdom (learning. The new generation is hardly incorporated to learn this traditional knowledge about the date palm and its products, are the main conclusions. Legal, educational and community recommendations are given to incorporate the traditional knowledge about the date palm and its products as a cultural touristic attraction of the Municipio

  15. Efectos de espacio sobre costos de provisión local. Un modelo de ecualización por bloques para los municipios bolivianos

    Directory of Open Access Journals (Sweden)

    Barrios Suvelza, Franz Xavier

    2005-12-01

    Full Text Available Bolivia experimentó una importante transformación territorial después de que se aprobó la Ley de Participación Popular en 1994. Los efectos benéficos de tal reforma estuvieron acompañados de una serie de efectos contraproducentes, entre ellos los que se derivan del modelo de transferencias centrales hacia los municipios. Este artículo propone un nuevo modelo de transferencias que complementa el actual ¿sistema de dotación fiscal a municipios según el principio per cápita¿ con uno de ¿ecualización fiscal intermunicipal por bloques¿.

  16. Zonificación del Municipio Gibara, útil de trabajo para el comienzo de las actividades extensión agrícola.

    OpenAIRE

    Raciel Ojeda Fernández; Severo Aranda Aranda; Daimarelis Rodríguez Leyva

    2003-01-01

    Se expone la zonificación del municipio Gibara fundamentado en un análisis sistémico del medio donde se desarrolla la producción agropecuaria. Para conseguir este resultado se comenzó con la búsqueda de informaciones del medio físico, socioeconómico y agrícola del municipio. Posteriormente se confeccionaron mapas de hidrología, suelos, temperatura, vías de comunicación terrestres, pluviometría y prácticas agrícolas; a continuación se analizó la información contenida en cada mapa superponiéndo...

  17. Valoración económica de los servicios ambientales del bosque del municipio de Ixtapaluca, Estado de México, México

    OpenAIRE

    Bertha Sofía Larqué-Saavedra; Ramón Valdivia Alcalá; Fabián Islas Gutiérrez; José Luis Romo Lozano

    2004-01-01

    La zona metropolitana del valle de México está enfrentando problemas ambientales derivados del deterioro de sus recursos naturales. Al oriente de esta zona, el municipio de Ixtapaluca, Estado de México, cobra importancia por poseer la superficie forestal más grande. Desafortunadamente esta superficie ha venido disminuyendo a causa de incendios, plagas, prácticas de cambios de uso de suelo, pastoreo intensivo y tala clandestina e indiscriminada. Esta tendencia significa un grave problema para ...

  18. Formulación participativa del presupuesto en el municipio Caroní: comparación con la experiencia de Porto Alegre

    Directory of Open Access Journals (Sweden)

    María Pilar GARCÍA-GUADILLA

    2009-11-01

    Full Text Available RESUMEN: El presente artículo evalúa la experiencia de descentralización local que se lleva a cabo desde 1990 hasta la fecha en el Municipio Caroní de Ciudad Guayana, Venezuela. Focalizándose en la elaboración del presupuesto participativo, se identifican los alcances y limitaciones de algunas prácticas de democracia participativa tales como la participación ciudadana en la gestión local. Finalmente, se hace una comparación con la experiencia de elaboración del presupuesto en forma participativa del municipio de Porto Alegre (Brasil estableciéndose las semejanzas y diferencias entre ambos procesos en lo que se refiere a los siguientes aspectos: la apertura de nuevos espacios de participación, el acceso a la información, la satisfacción de las demandas sociales en consonancia con los criterios de equidad y eficiencia, la existencia y utilización de mecanismos de control de la gestión y la posibilidad de trascender desde la participación local hacia la cultura política de ciudadanos o ciudadanía activa.ABSTRACT: This article evaluates the experience with local decentralization of the Municipio Caroní, in Venezuela since 1990 from the point of view of participatory democracy. It analyzes the decision making process around the elaboration of the socalled "Participatory Budgeting" and compares it with the case of the Municipio Porto Alegre in Brazil in order to draw some conclussión about: the opening of new spaces for participation, access to vital information, residente" satisfacction of their demands according to the criteria of efficiency and equity, mechanisms of control over the representatives and the possibility to trascend from a culture of local participatión to a citizens and active culture.

  19. La evaluación formativa en Educación Física en el municipio de Gandía

    OpenAIRE

    Valero García, Francisco

    2013-01-01

    El objetivo principal de este estudio es conocer las creencias y pensamientos que los maestros poseen acerca de la evaluación formativa en el municipio de Gandía. Primeramente, se ha analizado la visión de diversos autores sobre la evaluación formativa, además de observar las ventajas que posee esta evaluación, a través de diversos estudios publicados sobre esta temática

  20. Gastronomía típica Margariteña como atractivo turístico del Municipio Mariño Estado Nueva Esparta

    OpenAIRE

    Medina, María; Ontón, Silvia; Lunar Leandro, Rafael Antonio

    2008-01-01

    The typical margariteñan gastronomy, its elements: restaurants, authors, dishes and promotion as a tourism attraction at the Municipio Mariño is characterized. Recommendations for its improvement are presented. Tourism and gastronomy are the theoretical grounds and its importance for the tourism industry. A descriptive and field methodology was used. Today, there is a lack of information, promo-tion and improvement of the typical margariteñan gastronomy as a tourism attraction at the Munici...

  1. Caracterización psicosocial de un grupo de adolescentes embarazadas del municipio Campechuela. Psychological characterization of pregnant adolescents in the municipality of Campechuela

    OpenAIRE

    Elsa Pérez Rosabal; Yudmila Soler Sánchez; Rebeca Pérez Rosabal; Laidys Marlenes Fonseca Méndez

    2015-01-01

    Se realizó un estudio observacional descriptivo de enfoque cuantitativo y corte transversal, en el periodo comprendido entre enero y marzo de 2012, con adolescentes embarazadas de los Consejos Populares 1 y 2 del municipio Campechuela, con el objetivo de caracterizar desde el punto de vista psicosocial a estas adolescentes. El universo quedó constituido por las 50 adolescentes embarazadas de dichos consejos populares, la muestra quedó conformada por 25 adolescentes, seleccionadas de for...

  2. Posibilidades de reducción de los residuos sólidos (no peligrosos) en el Municipio de Barbosa : un estudio de caso

    OpenAIRE

    Mejía Ríos, Luis Santiago

    2007-01-01

    Este trabajo muestra los diferentes mecanismo utilizados en la actualidad para disminuir la cantidad de residuos sólidos en el municipio de Barbosa, explicando desde el problema de las externalidades que se generan en el sitio de disposición final y el medio ambiente, pasando por el desarrollo del manejo integral de estos desechos y formas en las cuales se puede contribuir al mejoramiento de esta situación que cada vez sigue creciendo.

  3. La problemática del manejo de los residuos sólidos en seis municipios del sur de Zacatecas

    Directory of Open Access Journals (Sweden)

    Germaín A. Castañeda Delgado

    2015-01-01

    Full Text Available los objetivos de la presente investigación son determinar la cantidad de residuos sólidos generados en seis municipios del estado de Zacatecas, México, y comparar su composición porcentual en peso y volumen. Los resultados muestran la complejidad para el tratamiento y la disposición final de residuos sólidos en los municipios rurales y urbanos, debido a los grandes volúmenes generados y a los cambios en los patrones de consumo, que revelan la necesidad de emprender proyectos enfocados a su reducción, reciclaje, reutilización y valorización energética en los municipios analizados, además pueden servir para evaluar el inicio de acciones conjuntas entre ciudadanos y autoridades municipales para su tratamiento y disposición final. Esta investigación pretende contribuir al entendimiento de los problemas asociados a la disposición final de residuos en el estado de Zacatecas.

  4. Propuesta y aplicación de una metodología para estimar la e-preparación de municipios colombianos

    Directory of Open Access Journals (Sweden)

    Diego Chavarro

    2008-05-01

    Full Text Available La conformación y consolidación de municipios digitales requiere de construcciones metodológicas que respondan a las diferentes particularidades de los territorios y sus habitantes. La mayoría de municipios colombianos pequeños desconoce la capacidad de apropiación que tienen sus habitantes de las tecnologías de la información y la comunicación - TIC. Nuestro trabajo consiste en construir una metodología para estimar la preparación electrónica (e-preparación, e-readiness de estos municipios, tanto en cuestiones técnicas como sociales. Presentamos la metodología y su aplicación en dos realidades socioculturales distintas: Castilla la Nueva (Meta y Guaduas (Cundinamarca./ The shaping and consolidation of digital municipalities require methodological constructs able to take into account the singularities of territories and their inhabitants. Many Colombian municipalities don't have an understanding of their capability to assimilate Information and telecommunication Technologies - ICT. Our work consists in constructing a methodology to estimate the e-readiness of Colombian municipalities concerning both technical and social issues. We present the methodology and its application in two different socio-cultural realities: Castilla la Nueva (Meta and Guaduas (Cundinamarca.

  5. Zonificación del Municipio Gibara, útil de trabajo para el comienzo de las actividades extensión agrícola.

    Directory of Open Access Journals (Sweden)

    Raciel Ojeda Fernández

    2003-01-01

    Full Text Available Se expone la zonificación del municipio Gibara fundamentado en un análisis sistémico del medio donde se desarrolla la producción agropecuaria. Para conseguir este resultado se comenzó con la búsqueda de informaciones del medio físico, socioeconómico y agrícola del municipio. Posteriormente se confeccionaron mapas de hidrología, suelos, temperatura, vías de comunicación terrestres, pluviometría y prácticas agrícolas; a continuación se analizó la información contenida en cada mapa superponiéndolos a igual escala. Este proceso concluyo con la división del municipio en tres zonas, caracterizadas y con valoraciones iniciales de sus principales problemáticas que apoyarán el objetivo de facilitar la toma de decisiones del personal de Investigación, extensión agraria, técnicos, directivos y productores vinculados con la actividad agropecuaria.

  6. Necessary, yet dissociable contributions of the insular and ventromedial prefrontal cortices to norm adaptation: computational and lesion evidence in humans.

    Science.gov (United States)

    Gu, Xiaosi; Wang, Xingchao; Hula, Andreas; Wang, Shiwei; Xu, Shuai; Lohrenz, Terry M; Knight, Robert T; Gao, Zhixian; Dayan, Peter; Montague, P Read

    2015-01-14

    Social norms and their enforcement are fundamental to human societies. The ability to detect deviations from norms and to adapt to norms in a changing environment is therefore important to individuals' normal social functioning. Previous neuroimaging studies have highlighted the involvement of the insular and ventromedial prefrontal (vmPFC) cortices in representing norms. However, the necessity and dissociability of their involvement remain unclear. Using model-based computational modeling and neuropsychological lesion approaches, we examined the contributions of the insula and vmPFC to norm adaptation in seven human patients with focal insula lesions and six patients with focal vmPFC lesions, in comparison with forty neurologically intact controls and six brain-damaged controls. There were three computational signals of interest as participants played a fairness game (ultimatum game): sensitivity to the fairness of offers, sensitivity to deviations from expected norms, and the speed at which people adapt to norms. Significant group differences were assessed using bootstrapping methods. Patients with insula lesions displayed abnormally low adaptation speed to norms, yet detected norm violations with greater sensitivity than controls. Patients with vmPFC lesions did not have such abnormalities, but displayed reduced sensitivity to fairness and were more likely to accept the most unfair offers. These findings provide compelling computational and lesion evidence supporting the necessary, yet dissociable roles of the insula and vmPFC in norm adaptation in humans: the insula is critical for learning to adapt when reality deviates from norm expectations, and that the vmPFC is important for valuation of fairness during social exchange. PMID:25589742

  7. Noradrenergic Activation of the Basolateral Amygdala Enhances Object Recognition Memory and Induces Chromatin Remodeling in the Insular Cortex

    Directory of Open Access Journals (Sweden)

    Hassiba eBeldjoud

    2015-04-01

    Full Text Available It is well established that arousal-induced memory enhancement requires noradrenergic activation of the basolateral complex of the amygdala (BLA and modulatory influences on information storage processes in its many target regions. While this concept is well accepted, the molecular basis of such BLA effects on neural plasticity changes within other brain regions remains to be elucidated. The present study investigated whether noradrenergic activation of the BLA after object recognition training induces chromatin remodeling through histone post-translational modifications in the insular cortex (IC, a brain region that is importantly involved in object recognition memory. Male Sprague–Dawley rats were trained on an object recognition task, followed immediately by bilateral microinfusions of norepinephrine (1.0 µg or saline administered into the BLA. Saline-treated control rats exhibited poor 24-h retention, whereas norepinephrine treatment induced robust 24-h object recognition memory. Most importantly, this memory-enhancing dose of norepinephrine induced a global reduction in the acetylation levels of histone H3 at lysine 14, H2B and H4 in the IC 1 h later, whereas it had no effect on the phosphorylation of histone H3 at serine 10 or tri-methylation of histone H3 at lysine 27. Norepinephrine administered into the BLA of non-trained control rats did not induce any changes in the histone marks investigated in this study. These findings indicate that noradrenergic activation of the BLA induces training-specific effects on chromatin remodeling mechanisms, and presumably gene transcription, in its target regions, which may contribute to the understanding of the molecular mechanisms of stress and emotional arousal effects on memory consolidation.

  8. Successful Aging among Elders Living in the Mani Continental Region vs. Insular Areas of the Mediterranean: the MEDIS Study.

    Science.gov (United States)

    Mariolis, Anargiros; Foscolou, Alexandra; Tyrovolas, Stefanos; Piscopo, Suzanne; Valacchi, Giuseppe; Tsakountakis, Nikos; Zeimbekis, Akis; Bountziouka, Vassiliki; Gotsis, Efthimios; Metallinos, George; Tyrovola, Dimitra; Tur, Josep-Antoni; Matalas, Antonia-Leda; Lionis, Christos; Polychronopoulos, Evangelos; Panagiotakos, Demosthenes

    2016-05-01

    To evaluate the role of geography i.e., continental vs. insular Mediterranean, on successful aging among older inhabitants. During 2005-2014, 2693 elderly (aged 65 to 100 years) individuals from 21 Mediterranean islands in Greece, Italy and Spain as well as Cyprus, Malta, and the rural region of Mani (southeast continental region of Greece keeping old-time traditions), were voluntarily recruited. Successful aging was evaluated using a validated index composed of 10 health-related socio-lifestyle and clinical characteristics. After accounting for age, sex, body mass index (BMI), physical activity, smoking habits, MedDietScore and access to health care services, the older inhabitants of islands were found to have a higher level of the successful aging index when compared to their counterparts in Mani (Beta=0.174, p<0.001); moreover, islanders exhibited slightly more years of "good" health (68.7 vs 68.4 years for Mani residents (p=0.99)). However, compared to the residents of Mani, islanders had 1.64 times higher odds (95%CI, 1.08-2.48) for having hypertension, 2.4-times higher odds (95%CI, 1.34-4.21) for having diabetes and 1.52 times higher odds (95%CI, 0.97-2.38) for having hypercholesterolemia. Engaging in physical activities and healthy dietary habits were the major determinants of healthy aging, among islanders as compared to their counterparts of continental Mani region. Elder residents of the continental Mani area enjoyed a better health status, whereas elder islanders had a higher level of successful aging; a finding which could be attributed to differences in lifestyle among elders. PMID:27330843

  9. Comparison of anterior cingulate versus insular cortex as targets for real-time fMRI regulation during pain stimulation

    Directory of Open Access Journals (Sweden)

    Kirsten eEmmert

    2014-10-01

    Full Text Available Real-time functional magnetic resonance imaging (rt-fMRI neurofeedback allows learning voluntary control over specific brain areas by means of operant conditioning and has been shown to decrease pain perception. To further increase the effect of rt-fMRI neurofeedback on pain, we directly compared two different target regions of the pain network i.e. the anterior insular cortex (AIC and the anterior cingulate cortex (ACC.Participants for this prospective study were randomly assigned to two age-matched groups of 14 participants each (7 females per group for AIC and ACC feedback. First, a functional localizer using block-design heat pain stimulation was performed to define the pain-sensitive target region within the AIC or ACC. Second, subjects were asked to down-regulate the feedback signal in four neurofeedback runs during identical pain stimulation. Data analysis included task-related and functional connectivity analysis.At the behavioral level, pain ratings significantly decreased during feedback versus localizer runs, but there was no difference between AIC and ACC groups. Concerning neuroimaging, ACC and AIC showed consistent involvement of the caudate nucleus for subjects that learned down-regulation (17/28 in both task-related and functional connectivity analysis. The functional connectivity towards the caudate nucleus is stronger for the ACC while the AIC is more heavily connected to the ventrolateral prefrontal cortex.Consequently, the ACC and AIC are suitable targets for real-time fMRI neurofeedback during pain perception as they both affect the caudate nucleus, although functional connectivity indicates that the direct connection seems to be stronger with the ACC. Additionally, the caudate, an important area involved in pain perception and suppression, could be a rt-fMRI target itself. Future studies are needed to identify parameters characterizing successful regulators and to assess the effect of repeated rt-fMRI neurofeedback on pain

  10. Bilateral lesions in a specific subregion of posterior insular cortex impair conditioned taste aversion expression in rats.

    Science.gov (United States)

    Schier, Lindsey A; Blonde, Ginger D; Spector, Alan C

    2016-01-01

    The gustatory cortex (GC) is widely regarded for its integral role in the acquisition and retention of conditioned taste aversions (CTAs) in rodents, but large lesions in this area do not always result in CTA impairment. Recently, using a new lesion mapping system, we found that severe CTA expression deficits were associated with damage to a critical zone that included the posterior half of GC in addition to the insular cortex (IC) that is just dorsal and caudal to this region (visceral cortex). Lesions in anterior GC were without effect. Here, neurotoxic bilateral lesions were placed in the anterior half of this critical damage zone, at the confluence of the posterior GC and the anterior visceral cortex (termed IC2 ), the posterior half of this critical damage zone that contains just VC (termed IC3), or both of these subregions (IC2 + IC3). Then, pre- and postsurgically acquired CTAs (to 0.1 M NaCl and 0.1 M sucrose, respectively) were assessed postsurgically in 15-minute one-bottle and 96-hour two-bottle tests. Li-injected rats with histologically confirmed bilateral lesions in IC2 exhibited the most severe CTA deficits, whereas those with bilateral lesions in IC3 were relatively normal, exhibiting transient disruptions in the one-bottle sessions. Groupwise lesion maps showed that CTA-impaired rats had more extensive damage to IC2 than did unimpaired rats. Some individual differences in CTA expression among rats with similar lesion profiles were observed, suggesting idiosyncrasies in the topographic representation of information in the IC. Nevertheless, this study implicates IC2 as the critical zone of the IC for normal CTA expression. PMID:26053891

  11. Las ciudades insulares en el Caribe Occidental: desarrollo del concepto urbanístico-territorial de ciudad insular a partir del estudio comparativo de las Islas de la Bahía de Honduras y San Andrés, Providencia y Santa Catalina - Colombia

    OpenAIRE

    Ayala de la Hoz, Angélica Piedad

    2014-01-01

    In this study we propose to contribute to a universal reflection, presenting a category of the city which is founded surrounded by the sea. which are located in a specific geographical location and are part of a recognized territorial unit. The term insular city contributes to this reflection about the city, reconsidering the previous knowledge, which is fruit of the exhaustive study on small islands. Experts in disciplines affined to urbanism, such as the geography, the sociology or even th...

  12. Experiencia sobre educación rural en el municipio de Samacá, Boyacá. Colombia

    Directory of Open Access Journals (Sweden)

    María Cecilia Rodríguez Rueda

    2007-12-01

    Full Text Available Recibido 3 de noviembre de 2006 • Aprobado 30 de noviembre de 2006      Resumen. La experiencia, que a continuación se describe, es el resultado del trabajo con comunidades e instituciones educativas rurales que viene desarrollando el Grupo de Investigación Educación Rural de la Universidad Pedagógica y Tecnológica de Colombia desde 1999, en el municipio de Samacá, Boyacá. Esta se realiza en dos fases: la primera, recoge una visión holística de carácter socio-cultural y pedagógico de las familias que habitan en las veredas de Guantoque, Páramo Centro y Gacal y sus respectivas instituciones educativas. La segunda fase, coherente con los resultados obtenidos, busca diseñar y ejecutar, a través de la investigación-proyección social, una propuesta alternativa pedagógica y de atención primaria en salud, que contribuya a mejorar las condiciones de los menores y sus familias en el sector. La metodología utilizada en este proceso es la investigación-acción participativa, donde se han involucrado, los maestros de las escuelas, los padres y las madres de familia, las instituciones y organizaciones del municipio, la administración municipal y la Secretaria de Educación Departamental. Los resultados obtenidos se relacionan con los compromisos adquiridos por los diferentes sujetos participantes, pero además, con el conocimiento de la realidad cultural, pedagógica y física de los menores.  Abstract. The author describes the experience of working with rural communities and its educational institutions developed by the Rural Education Investigative. Group of Universidad Pedagógica y Tecnologica de Colombia, since 1999 at the municipality of Samaca, Boyacá. This experience had two stages; the first one gathered the socio cultural and pedagogical characteristics, in a holistic vision, of the families living in Guantoque, Páramo Central y Gacal areas. The second stage of the experience is based on the results obtained and

  13. La observación de la violencia de género en el municipio de Durango

    Directory of Open Access Journals (Sweden)

    María Eugenia Pérez Herrera

    2010-01-01

    Full Text Available Esta aportación la iniciamos parafraseando a Juan-Luis Pintos cuando afirma que la mayor dificultad con la que se ha encontrado en la investigación sociológica se podría resumir en una frase de larga tradición: "Hacer visible la invisibilidad social". Y es precisamente esta dificultad con la que nos encontramos en el tema de la violencia social y de género: "visibilizar la violencia", "visibilizar y no naturalizar la ocurrencia de la misma". Y es precisamente esta premisa, "visibilizar y no naturalizar la violencia", la que se convierte en una de las tareas del Observatorio de Violencia Social y de Género en el Municipio de Durango, el cual tiene como uno de sus principales objetivos la creación del "Sistema de Información", que comprenda: la definición, homologación y recolección de información y difusión de los indicadores de violencia social y de género. Toda vez que a partir de la información proporcionada por las dependencias públicas encargadas de atender el fenómeno, existe una enorme disparidad en torno a los sistemas de registro que impiden que se pueda contar con datos que permitan la atención integral y transversal del fenómeno. A partir del reconocimiento de que la violencia es un asunto de todos, que además "duele, lacera, lastima a unos y preocupa a otros", surge la necesidad de realizar la observación de ésta desde una actitud crítica, holística e integral de búsqueda permanente, en la que la violencia social sea dimensionada, nunca ocultada; y la violencia de género des-anudada-trascendida por los lazos de la feminidad y la masculinidad de los seres humanos. A través de este artículo se pretende mostrar los resultados del trabajo realizado en torno a las características de los sistemas de información y registro de las dependencias públicas encargadas de atender el fenómeno, así como el informe de la situación de violencia social y de género en el Municipio de Durango.

  14. General Monte Carlo code MONK

    International Nuclear Information System (INIS)

    The Monte Carlo code MONK is a general program written to provide a high degree of flexibility to the user. MONK is distinguished by its detailed representation of nuclear data in point form i.e., the cross-section is tabulated at specific energies instead of the more usual group representation. The nuclear data are unadjusted in the point form but recently the code has been modified to accept adjusted group data as used in fast and thermal reactor applications. The various geometrical handling capabilities and importance sampling techniques are described. In addition to the nuclear data aspects, the following features are also described; geometrical handling routines, tracking cycles, neutron source and output facilities. 12 references. (U.S.)

  15. Carlos Battilana: Profesor, Gestor, Amigo

    OpenAIRE

    José Pacheco; Eleazar Aliaga

    2009-01-01

    El Comité Editorial de Anales ha perdido a uno de sus miembros más connotados. Brillante docente de nuestra Facultad, Carlos Alberto Battilana Guanilo (1945-2009) supo transmitir los conocimientos y atraer la atención de sus auditorios, de jóvenes estudiantes o de contemporáneos ya no tan jóvenes. Interesó a sus alumnos en la senda de la capacitación permanente y en la investigación. Por otro lado, comprometió a médicos distinguidos a conformar y liderar grupos con interés en la ciencia-amist...

  16. Monte Carlo lattice program KIM

    International Nuclear Information System (INIS)

    The Monte Carlo program KIM solves the steady-state linear neutron transport equation for a fixed-source problem or, by successive fixed-source runs, for the eigenvalue problem, in a two-dimensional thermal reactor lattice. Fluxes and reaction rates are the main quantities computed by the program, from which power distribution and few-group averaged cross sections are derived. The simulation ranges from 10 MeV to zero and includes anisotropic and inelastic scattering in the fast energy region, the epithermal Doppler broadening of the resonances of some nuclides, and the thermalization phenomenon by taking into account the thermal velocity distribution of some molecules. Besides the well known combinatorial geometry, the program allows complex configurations to be represented by a discrete set of points, an approach greatly improving calculation speed

  17. COMPARING THE BODY MASS VARIATIONS IN ENDEMIC INSULAR SPECIES OF THE GENUS PROLAGUS (OCHOTONIDAE, LAGOMORPHA IN THE PLEISTOCENE OF SARDINIA (ITALY

    Directory of Open Access Journals (Sweden)

    BLANCA MONCUNILL-SOLÉ

    2016-03-01

    Full Text Available Prolagus figaro and P. sardus are part of an endemic insular anagenetic lineage that populated Sardinia since the earliest Late Pliocene to Holocene. BM of some populations of these two species was calculated using regression models. The best BM proxies for Prolagus are: femur length, zeugopod measurements and distal humerus diameter. The anagenetic lineage show a BM increase of ca 20% from the populations of P. figaro (398−436 g to P. sardus (504−525 g. The trend shown by the size of lower third premolar, even if not directly comparable with BM, is opposite (ca -30% at the transition P. figaro−P. sardus. Compared to P. cf. calpensis, a continental species of similar age, BM of P. figaro is ca +25%. The comparison with the insular endemic P. apricenicus evidenced differences in BM range and timespan required to attain it, due to the different size and palaeogeographical situation of the islands. Insular endemic Prolagus follow the small mammal pattern of Island Rule. Mein’s (1983 biphasic model seems applicable to the evolution of P. figaro. A tachytelic phase followed by a bradytelic one seems to characterize also the appearance of P. sardus, at least for dental traits, a process probably triggered by important variations of abiotic and biotic traits of the environment, as indicated by the turnover that marks the onset of the Dragonara subcomplex. The prediction of life history traits and other biological attributes of Sardinian Prolagus using BM should be considered with caution due to the complexity of ecological selective regimes of Sardinia.

  18. Monte Carlo application tool-kit (MCATK)

    International Nuclear Information System (INIS)

    The Monte Carlo Application tool-kit (MCATK) is a C++ component-based software library designed to build specialized applications and to provide new functionality for existing general purpose Monte Carlo radiation transport codes such as MCNP. We will describe MCATK and its capabilities along with presenting some verification and validations results. (authors)

  19. Carlos Restrepo. Un verdadero Maestro

    Directory of Open Access Journals (Sweden)

    Pelayo Correa

    2009-12-01

    Full Text Available Carlos Restrepo fue el primer profesor de Patología y un miembro ilustre del grupo de pioneros que fundaron la Facultad de Medicina de la Universidad del Valle. Estos pioneros convergieron en Cali en la década de 1950, en posesión de un espíritu renovador y creativo que emprendió con mucho éxito la labor de cambiar la cultura académica del Valle del Cauca. Ellos encontraron una sociedad apacible, que disfrutaba de la generosidad de su entorno, sin deseos de romper las tradiciones centenarias de estilo de vida sencillo y satisfecho. Cuando los hijos tenían el deseo y la capacidad de seguir estudios universitarios, especialmente en el área de la medicina, la familia los enviaba a climas menos cálidos, que supuestamente favorecían la función cerebral y la acumulación de conocimientos. Los pioneros de la educación médica en el Valle del Cauca, en buena parte reclutados en universidades nacionales y extranjeras, sabían muy bien que el ambiente vallecaucano no impide una formación universitaria de primera clase. Carlos Restrepo era prototipo del espíritu de cambio y formación intelectual de las nuevas generaciones. Lo manifestaba de múltiples maneras, en buena parte con su genio alegre, extrovertido, optimista, de risa fácil y contagiosa. Pero esta fase amable de su personalidad no ocultaba su tarea formativa; exigía de sus discípulos dedicación y trabajo duro, con fidelidad expresados en memorables caricaturas que exageraban su genio ocasionalmente explosivo. El grupo de pioneros se enfocó con un espíritu de total entrega (tiempo completo y dedicación exclusiva y organizó la nueva Facultad en bien definidos y estructurados departamentos: Anatomía, Bioquímica, Fisiología, Farmacología, Patología, Medicina Interna, Cirugía, Obstetricia y Ginecología, Psiquiatría y Medicina Preventiva. Los departamentos integraron sus funciones primordiales en la enseñanza, la investigación y el servicio a la comunidad. El centro

  20. Survival and hsp70 gene expression in Plutella xylostella and its larval parasitoid Diadegma insulare varied between slowly ramping and abrupt extreme temperature regimes.

    Directory of Open Access Journals (Sweden)

    Md Habibullah Bahar

    Full Text Available BACKGROUND: In nature, insects have evolved behavioural and physiological adaptations to cope with short term exposure to extreme temperatures. Extreme heat events may increase as a result of climate change; this in turn will affect insect population dynamics. We examined the effect of abrupt and ecologically relevant gradual exposure to high temperatures on the survival and hsp70 gene expression in diamondback moth (DBM adults and the parasitoid Diadegma insulare, as well as in parasitized and non-parasitized DBM larvae. PRINCIPAL FINDINGS: Tolerance to high temperatures in DBM adults was higher than in D. insulare adults. There was no difference in the survival of DBM adults between abrupt and ramped increases from 25 to 38°C; however, at 40°C survival was higher when the temperature increased gradually. In contrast, more D. insulare adults survived when the temperature was ramped rather than shifted abruptly to both 38 and 40°C. There was no heat stress effect of up to 40°C on the survival of either parasitized or non-parasitized DBM larvae. In adults of both species, more hsp70 expression was observed when temperatures increased abruptly to 38°C compared to ramping. In contrast, at 40°C significantly more expression was found in insects exposed to the ramping rather than the abrupt regime. Hsp70 expression level was in agreement with adult survival data and appears to be a good indicator of stress levels. In parasitized and non-parasitized larvae, hsp70 expression was significantly higher after abrupt shifts compared to ramping at both temperatures. CONCLUSIONS/SIGNIFICANCE: Hsp70 gene expression was responsive to extreme temperatures in both DBM and D. insulare, which may underlie the ability of these insects to survive in extreme temperatures. Survival and hsp70 expression upon abrupt changes are distinctly different from those after ramping indicating that experimental protocol must be considered before extrapolating laboratory

  1. Clave para especies de ludwigia l. (onagraceae) de la región nor-oriental e insular de Venezuela depositadas en el herbario irbr

    OpenAIRE

    Luis José Cumana Campos

    2010-01-01

    La familia Onagraceae en Venezuela está representada por los géneros Epilobium, Fuchsia, Oenothera y Ludwigia. Este último, con el mayor número de especies (21), está distribuido desde el nivel del mar hasta la cordillera de los Andes. Para enriquecer el conocimiento del género Ludwigia en la región nor-oriental e insular, se hizo un inventario del material depositado de la familia en el herbario IRBR. Como resultado, se registran 13 especies de Ludwigia vinculadas con los medios dulceacuícol...

  2. Enhancement of Inhibitory Avoidance and Conditioned Taste Aversion Memory With Insular Cortex Infusions of 8-Br-cAMP: Involvement of the Basolateral Amygdala

    OpenAIRE

    Miranda, María I.; McGaugh, James L.

    2004-01-01

    There is considerable evidence that in rats, the insular cortex (IC) and amygdala are involved in the learning and memory of aversively motivated tasks. The present experiments examined the effects of 8-Br-cAMP, an analog of cAMP, and oxotremorine, a muscarinic agonist, infused into the IC after inhibitory avoidance (IA) training and during the acquisition/consolidation of conditioned taste aversion (CTA). Posttraining infusion into the IC of 0.3 μg oxotremorine and 1.25 μg 8-Br-cAMP enhanced...

  3. Variabilidad de la clorofila a fitoplanctónica y de los nutrientes inorgánicos en aguas de la plataforma insular de las Islas Baleares

    OpenAIRE

    J. Jansá; Aparicio-González, A.; Amengual, B. (Bartolomé)

    2009-01-01

    A lo largo de cuatro campañas llevadas a cabo en abril, julio y octubre de 2008 y marzo de 2009, se han tomado nuevos datos de clorofila a y nutrientes inorgánicos (nitratos, nitritos, fosfatos y silicatos), en diversas estaciones oceanográficas distribuidas en aguas de las plataformas insulares de Mallorca, Menorca e Ibiza, a tres niveles de profundidad (5, 25 y 50m o en las proximidades del fondo en algunos casos). Poniendo especial énfasis en la variabilidad estacional de la clorofila a (b...

  4. Ecología e impacto de los mamíferos invasores en ecosistemas insulares: la isla de Corvo, Archipiélago de las Azores

    OpenAIRE

    Hervías Parejo, Sandra

    2014-01-01

    Tesis por compendio de publicaciones Esta investigación se ha centrado en analizar el impacto directo e indirecto de los tres mamíferos invasores más comunes en los ecosistemas insulares (el ratón casero Mus domesticus, la rata negra Rattus rattus y el gato Felis silvestris catus), sobre la pardela cenicienta (Calonectris diomedea borealis). El trabajo se ha desarrollado en Corvo, que es la isla más remota del Archipiélago de las Azores y la última en ser descubierta y colonizada, por lo q...

  5. Epileptic seizure propagation from the second somatic sensory area to the fronto-medial region, by insular redistribution. A case report and a connectome description

    Directory of Open Access Journals (Sweden)

    Balogh Attila

    2015-06-01

    Full Text Available Introduction. The seizure propagation phenomenon by inducing remote symptoms brings several difficulties in finding the seizure onset and delineating the epileptic network which should be taken into consideration in epilepsy surgery. By demonstrating a difficult (MRI negative epilepsy surgery case explored with invasive presurgical evaluation we highlight the importance to recognise the secondary sensory area and to explore the the parieto-opercular-insular-medial frontal network in certain cases. A further conclusion is the consideration of the redistributory role of the insula as a special structure in the cerebral connectome, having a role in epileptic network organisation.

  6. Common misconceptions in Monte Carlo particle transport

    Energy Technology Data Exchange (ETDEWEB)

    Booth, Thomas E., E-mail: teb@lanl.gov [LANL, XCP-7, MS F663, Los Alamos, NM 87545 (United States)

    2012-07-15

    Monte Carlo particle transport is often introduced primarily as a method to solve linear integral equations such as the Boltzmann transport equation. This paper discusses some common misconceptions about Monte Carlo methods that are often associated with an equation-based focus. Many of the misconceptions apply directly to standard Monte Carlo codes such as MCNP and some are worth noting so that one does not unnecessarily restrict future methods. - Highlights: Black-Right-Pointing-Pointer Adjoint variety and use from a Monte Carlo perspective. Black-Right-Pointing-Pointer Misconceptions and preconceived notions about statistical weight. Black-Right-Pointing-Pointer Reasons that an adjoint based weight window sometimes works well or does not. Black-Right-Pointing-Pointer Pulse height/probability of initiation tallies and 'the' transport equation. Black-Right-Pointing-Pointer Highlights unnecessary preconceived notions about Monte Carlo transport.

  7. Programa de detección precoz de la Diabetes Tipo 2 en el Cabildo Insular de Tenerife.

    Directory of Open Access Journals (Sweden)

    Carlos Manuel Reyes González

    2012-12-01

    Full Text Available La Promoción de la Salud en el Lugar de Trabajo se ha convertido en un pilar fundamental para el personal sanitario del Servicio de Prevención Propio del Excmo. Cabildo Insular de Tenerife como instrumento para capacitar a los empleados en el cuidado de su salud. Para ello, y vistos los datos epidemiológicos de la Diabetes Mellitus en Canarias, donde se estima que la prevalencia es del 6,5% en la población de 30 - 64 años, se elaboró y ejecutó el programa denominado. Día Mundial de la Diabetes: ¿Sabes si tienes azúcar?, con el lema “Más vale Pre-venir que No-venir”. Éste consistió en la medición de la glucemia capilar, la realización del Test de Findrisk (que valora el riesgo de padecer diabetes tipo 2 a lo largo de la vida y en la entrega de información sobre prevención y tratamiento de la diabetes, todo ello con el objetivo de dar a conocer y sensibilizar sobre esta “epidemia” a todos los empleados y de detectar sujetos con cifras alteradas de glucosa en sangre para su posterior derivación y control y realizar un seguimiento en nuestras consultas de aquellos empleados que obtuvieron en el Test un resultado de riesgo alto o muy alto. Objetivos principales: Dar a conocer la diabetes a los empleados del Cabildo Insular de Tenerife. Sensibilizar de la magnitud del problema de salud pública que supone la diabetes en Canarias. Sensibilizar sobre la importancia de la educación para la salud como instrumento de prevención y de detección precoz de la diabetes. Comparar los datos obtenidos de glucemia alterada en las analíticas de los reconocimientos médicos de vigilancia de la salud frente a los datos obtenidos en el Programa de Día Mundial de la Diabetes. Detección precoz de la Diabetes tipo 2 mediante: - La derivación a Atención Primaria de Salud de aquellos empleados con cifras alteradas de glucosa para estudio y tratamiento, si procede y seguimiento de los mismos por parte del personal sanitario del servicio de

  8. População, grupos étnico-raciais e economia cafeeira: São Carlos, 1907 Población, grupos étnico-raciales y economía cafetera: São Carlos, 1907 Population, ethnic groups and the coffee industry: São Carlos, Brazil, 1907

    Directory of Open Access Journals (Sweden)

    Oswaldo Mário Serra Truzzi

    2009-12-01

    Full Text Available Em São Carlos, a formação de uma população estabelecida iniciou-se ainda na primeira metade do século XIX, com as primeiras fazendas mantidas a braço escravo. Em 1884, com a chegada da ferrovia, o município inseriu-se definitivamente na vigorosa economia cafeeira paulista. São Carlos acompanhou assim a transição de uma economia tocada por trabalho escravo para outra em que predominavam colonos livres, de origem europeia, sobretudo italiana. Menos de duas décadas após a abolição do cativeiro, a composição racial da população alterou-se significativamente, graças ao grande afluxo de imigrantes e, provavelmente também, ainda que em menor grau, à saída de ex-escravos do município. Esse aporte diversificado traduziu-se no levantamento censitário realizado no município em 1907, que abrangeu a compilação de informações variadas referentes a 38.642 indivíduos que então o habitavam. Este trabalho busca analisar e discutir as características demográficas e a inserção social de diferentes grupos étnico-raciais presentes na população de São Carlos nessa época. Sua relevância deriva também da ausência de levantamentos populacionais no período em questão, dadas as conhecidas deficiências do censo de 1890 e 1900 e o longo período de 34 anos de intermitência entre o levantamento populacional da província de São Paulo de 1886 e o censo nacional de 1920, este mais confiável, porém omisso quanto à cor dos indivíduos.En São Carlos, la formación de una población establecida se inició aún en la primera mitad del siglo XIX, con las primeras haciendas mantenidas por el trabajo esclavo. En 1884, con la llegada de la ferrovía, el municipio se insertó definitivamente en la vigorosa economía cafetera paulista. São Carlos acompañó así la transición de una economía tocada por el trabajo esclavo a otra en la que predominaban los colonos libres de origen europeo, sobre todo italiano. Menos de dos d

  9. Análisis de la seguridad alimentaria en los hogares el municipio de Xochiapulco Puebla, México

    Directory of Open Access Journals (Sweden)

    Guadalupe Selene Zárate Guevara

    2016-01-01

    Full Text Available El objetivo de este estudio es conocer el grado de seguridad alimentaria que presentan los hogares del municipio de Xochiapulco, Puebla, teniendo como variables de estudio la disponibilidad y suficiencia alimentaria, el acceso físico y económico a los alimentos y la equidad y carencia por acceso a los alimen- tos. El estudio se desarrolló con un muestreo aleatorio simple con unidad de análisis el hogar rural. Los resultados muestran que el 54% de las familias no tiene acceso económi- co a los alimentos y el 64% sí accede mediante la agricultura familiar, con la producción de maíz, frijol y hortalizas; con un déficit de cuatro meses al año, no obstante cubren una suficiencia alimentaria de 1,979 kcal, lo cual es insuficiente en comparación al consumo óptimo de 2,415 kcal.

  10. Currículo comprehensivo y extensión universitaria. Experiencia de municipio de San Bernardo, Cundinamarca.

    Directory of Open Access Journals (Sweden)

    Winston Licona Calpe

    2010-05-01

    Full Text Available La vieja y nueva pregunta por el sentido de la práctica educativa universitaria ha propiciado, en la historia reciente de este sector, la revisión de las didácticas propias del currículo tradicional, que se caracteriza por su sentido endógeno, autista y autonomista, cognitivista y reproductivista. Así, ha permitido el desarrollo de didácticas del currículo comprensivo que, por su parte, se distingue por su sentido dialógico, comunicativo y de competencias lingüísticas y conversacionales. Hoy, este dinamismo de la refl exión educativa, presionado por las condiciones socioeconómicas, políticas y culturales, permite asumir la tarea de construir un currículo comprehensivo que tiene como razón de ser la integración de la investigación y la docencia a través de la extensión local, comunitaria, pública y privada como medio para construir compromiso y corresponsabilidad social universitaria. Para ello se presenta la experiencia con el Municipio de San Bernardo, Cundinamarca.

  11. Alteraciones espirométricas en pacientes asmáticos del municipio Majibacoa, 2009-2013

    Directory of Open Access Journals (Sweden)

    Mailin Molina Leyva

    2014-08-01

    Full Text Available Se realizó un estudio descriptivo, con el objetivo de identificar alteraciones espirométricas en pacientes asmáticos del municipio Majibacoa, en el período comprendido desde enero del 2009 a enero del 2013. La muestra se integró por cincuenta pacientes asmáticos con más de 20 años de evolución de la enfermedad. Se les realizó previo consentimiento informado y una prueba espirométrica. Predominó el sexo femenino y las edades comprendidas entre 35 y 54 años. Prevalecieron los pacientes en la categoría de asma persistente severa. El volumen espiratorio forzado del primer segundo se comportó patológico en el mayor por ciento de los pacientes y la capacidad vital forzada mostró alteración en un menor número de pacientes. El patrón espirométrico obstructivo fue el más frecuente en los pacientes estudiados

  12. Use of Monte Carlo Methods in brachytherapy

    International Nuclear Information System (INIS)

    The Monte Carlo method has become a fundamental tool for brachytherapy dosimetry mainly because no difficulties associated with experimental dosimetry. In brachytherapy the main handicap of experimental dosimetry is the high dose gradient near the present sources making small uncertainties in the positioning of the detectors lead to large uncertainties in the dose. This presentation will review mainly the procedure for calculating dose distributions around a fountain using the Monte Carlo method showing the difficulties inherent in these calculations. In addition we will briefly review other applications of the method of Monte Carlo in brachytherapy dosimetry, as its use in advanced calculation algorithms, calculating barriers or obtaining dose applicators around. (Author)

  13. Monte Carlo simulation for soot dynamics

    Directory of Open Access Journals (Sweden)

    Zhou Kun

    2012-01-01

    Full Text Available A new Monte Carlo method termed Comb-like frame Monte Carlo is developed to simulate the soot dynamics. Detailed stochastic error analysis is provided. Comb-like frame Monte Carlo is coupled with the gas phase solver Chemkin II to simulate soot formation in a 1-D premixed burner stabilized flame. The simulated soot number density, volume fraction, and particle size distribution all agree well with the measurement available in literature. The origin of the bimodal distribution of particle size distribution is revealed with quantitative proof.

  14. Monte carlo simulation for soot dynamics

    KAUST Repository

    Zhou, Kun

    2012-01-01

    A new Monte Carlo method termed Comb-like frame Monte Carlo is developed to simulate the soot dynamics. Detailed stochastic error analysis is provided. Comb-like frame Monte Carlo is coupled with the gas phase solver Chemkin II to simulate soot formation in a 1-D premixed burner stabilized flame. The simulated soot number density, volume fraction, and particle size distribution all agree well with the measurement available in literature. The origin of the bimodal distribution of particle size distribution is revealed with quantitative proof.

  15. Fast quantum Monte Carlo on a GPU

    CERN Document Server

    Lutsyshyn, Y

    2013-01-01

    We present a scheme for the parallelization of quantum Monte Carlo on graphical processing units, focusing on bosonic systems and variational Monte Carlo. We use asynchronous execution schemes with shared memory persistence, and obtain an excellent acceleration. Comparing with single core execution, GPU-accelerated code runs over x100 faster. The CUDA code is provided along with the package that is necessary to execute variational Monte Carlo for a system representing liquid helium-4. The program was benchmarked on several models of Nvidia GPU, including Fermi GTX560 and M2090, and the latest Kepler architecture K20 GPU. Kepler-specific optimization is discussed.

  16. Importance iteration in MORSE Monte Carlo calculations

    International Nuclear Information System (INIS)

    An expression to calculate point values (the expected detector response of a particle emerging from a collision or the source) is derived and implemented in the MORSE-SGC/S Monte Carlo code. It is outlined how these point values can be smoothed as a function of energy and as a function of the optical thickness between the detector and the source. The smoothed point values are subsequently used to calculate the biasing parameters of the Monte Carlo runs to follow. The method is illustrated by an example, which shows that the obtained biasing parameters lead to a more efficient Monte Carlo calculation. (orig.)

  17. Advanced computers and Monte Carlo

    International Nuclear Information System (INIS)

    High-performance parallelism that is currently available is synchronous in nature. It is manifested in such architectures as Burroughs ILLIAC-IV, CDC STAR-100, TI ASC, CRI CRAY-1, ICL DAP, and many special-purpose array processors designed for signal processing. This form of parallelism has apparently not been of significant value to many important Monte Carlo calculations. Nevertheless, there is much asynchronous parallelism in many of these calculations. A model of a production code that requires up to 20 hours per problem on a CDC 7600 is studied for suitability on some asynchronous architectures that are on the drawing board. The code is described and some of its properties and resource requirements ae identified to compare with corresponding properties and resource requirements are identified to compare with corresponding properties and resource requirements are identified to compare with corresponding properties and resources of some asynchronous multiprocessor architectures. Arguments are made for programer aids and special syntax to identify and support important asynchronous parallelism. 2 figures, 5 tables

  18. Guideline for radiation transport simulation with the Monte Carlo method

    International Nuclear Information System (INIS)

    Today, the photon and neutron transport calculations with the Monte Carlo method have been progressed with advanced Monte Carlo codes and high-speed computers. Monte Carlo simulation is rather suitable expression than the calculation. Once Monte Carlo codes become more friendly and performance of computer progresses, most of the shielding problems will be solved by using the Monte Carlo codes and high-speed computers. As those codes prepare the standard input data for some problems, the essential techniques for solving the Monte Carlo method and variance reduction techniques of the Monte Carlo calculation might lose the interests to the general Monte Carlo users. In this paper, essential techniques of the Monte Carlo method and the variance reduction techniques, such as importance sampling method, selection of estimator, and biasing technique, are described to afford a better understanding of the Monte Carlo method and Monte Carlo code. (author)

  19. 11th International Conference on Monte Carlo and Quasi-Monte Carlo Methods in Scientific Computing

    CERN Document Server

    Nuyens, Dirk

    2016-01-01

    This book presents the refereed proceedings of the Eleventh International Conference on Monte Carlo and Quasi-Monte Carlo Methods in Scientific Computing that was held at the University of Leuven (Belgium) in April 2014. These biennial conferences are major events for Monte Carlo and quasi-Monte Carlo researchers. The proceedings include articles based on invited lectures as well as carefully selected contributed papers on all theoretical aspects and applications of Monte Carlo and quasi-Monte Carlo methods. Offering information on the latest developments in these very active areas, this book is an excellent reference resource for theoreticians and practitioners interested in solving high-dimensional computational problems, arising, in particular, in finance, statistics and computer graphics.

  20. "Shaakal" Carlos kaebas arreteerija kohtusse / Margo Pajuste

    Index Scriptorium Estoniae

    Pajuste, Margo

    2006-01-01

    Ilmunud ka: Postimees : na russkom jazõke 3. juuli lk. 11. Vangistatud kurikuulus terrorist "Shaakal" Carlos alustas kohtuasja oma kunagise vahistaja vastu. Ta süüdistab Prantsusmaa luureteenistuse endist juhti inimröövis

  1. Monte Carlo simulations for plasma physics

    Energy Technology Data Exchange (ETDEWEB)

    Okamoto, M.; Murakami, S.; Nakajima, N.; Wang, W.X. [National Inst. for Fusion Science, Toki, Gifu (Japan)

    2000-07-01

    Plasma behaviours are very complicated and the analyses are generally difficult. However, when the collisional processes play an important role in the plasma behaviour, the Monte Carlo method is often employed as a useful tool. For examples, in neutral particle injection heating (NBI heating), electron or ion cyclotron heating, and alpha heating, Coulomb collisions slow down high energetic particles and pitch angle scatter them. These processes are often studied by the Monte Carlo technique and good agreements can be obtained with the experimental results. Recently, Monte Carlo Method has been developed to study fast particle transports associated with heating and generating the radial electric field. Further it is applied to investigating the neoclassical transport in the plasma with steep gradients of density and temperatures which is beyong the conventional neoclassical theory. In this report, we briefly summarize the researches done by the present authors utilizing the Monte Carlo method. (author)

  2. Monte Carlo Treatment Planning for Advanced Radiotherapy

    DEFF Research Database (Denmark)

    Cronholm, Rickard

    validation of a Monte Carlo model of a medical linear accelerator (i), converting a CT scan of a patient to a Monte Carlo compliant phantom (ii) and translating the treatment plan parameters (including beam energy, angles of incidence, collimator settings etc) to a Monte Carlo input file (iii). A protocol...... more sophisticated than previous algorithms since it uses delineations of structures in order to include and/or exclude certain media in various anatomical regions. This method has the potential to reduce anatomically irrelevant media assignment. In house MATLAB scripts translating the treatment plan...... presented. Comparison between dose distribution for clinical treatment plans generated by a commercial Treatment Planning System and by the implemented Monte Carlo Treatment Planning workflow were conducted. Good agreement was generally found, but for regions involving large density gradients differences of...

  3. Experience with the Monte Carlo Method

    International Nuclear Information System (INIS)

    Monte Carlo simulation of radiation transport provides a powerful research and design tool that resembles in many aspects laboratory experiments. Moreover, Monte Carlo simulations can provide an insight not attainable in the laboratory. However, the Monte Carlo method has its limitations, which if not taken into account can result in misleading conclusions. This paper will present the experience of this author, over almost three decades, in the use of the Monte Carlo method for a variety of applications. Examples will be shown on how the method was used to explore new ideas, as a parametric study and design optimization tool, and to analyze experimental data. The consequences of not accounting in detail for detector response and the scattering of radiation by surrounding structures are two of the examples that will be presented to demonstrate the pitfall of condensed

  4. Frontiers of quantum Monte Carlo workshop: preface

    International Nuclear Information System (INIS)

    The introductory remarks, table of contents, and list of attendees are presented from the proceedings of the conference, Frontiers of Quantum Monte Carlo, which appeared in the Journal of Statistical Physics

  5. Monte Carlo methods for particle transport

    CERN Document Server

    Haghighat, Alireza

    2015-01-01

    The Monte Carlo method has become the de facto standard in radiation transport. Although powerful, if not understood and used appropriately, the method can give misleading results. Monte Carlo Methods for Particle Transport teaches appropriate use of the Monte Carlo method, explaining the method's fundamental concepts as well as its limitations. Concise yet comprehensive, this well-organized text: * Introduces the particle importance equation and its use for variance reduction * Describes general and particle-transport-specific variance reduction techniques * Presents particle transport eigenvalue issues and methodologies to address these issues * Explores advanced formulations based on the author's research activities * Discusses parallel processing concepts and factors affecting parallel performance Featuring illustrative examples, mathematical derivations, computer algorithms, and homework problems, Monte Carlo Methods for Particle Transport provides nuclear engineers and scientists with a practical guide ...

  6. Monte Carlo simulation of granular fluids

    OpenAIRE

    Montanero, J. M.

    2003-01-01

    An overview of recent work on Monte Carlo simulations of a granular binary mixture is presented. The results are obtained numerically solving the Enskog equation for inelastic hard-spheres by means of an extension of the well-known direct Monte Carlo simulation (DSMC) method. The homogeneous cooling state and the stationary state reached using the Gaussian thermostat are considered. The temperature ratio, the fourth velocity moments and the velocity distribution functions are obtained for bot...

  7. Carlos II: el centenario olvidado

    Directory of Open Access Journals (Sweden)

    Luis Antonio RIBOT GARCÍA

    2009-12-01

    Full Text Available RESUMEN: A partir de una reflexión inicial sobre el fenómeno de las conmemoraciones, el autor se plantea las causas por las que el tercer centenario de la muerte de Carlos II no dará lugar a ninguna conmemoración. Con independencia de las valoraciones de todo tipo que puedan hacerse de dichas celebraciones, lo cierto es que, en este caso, tal vez hubieran permitido acercar al gran público a uno de los monarcas peor conocidos y menos valorados de la historia de España. Lo más grave, sin embargo, es que la sombra del desconocimiento y el juicio peyorativo se extienden también sobre todo su reinado. Las investigaciones sobre aquel periodo, sin embargo, a pesar de que no abundan, muestran una realidad bastante distinta, en la que la decadencia y la pérdida de la hegemonía internacional convivieron con importantes iniciativas y realizaciones políticas, tanto en el ámbito interno de la Monarquía, como en las relaciones internacionales.ABSTRACT: Parting from an initial reflection about the phenomenon of commemorations, the author ponders the causes for which the third centenary of Charles IFs death will not be the subjet of any celebrations. Besides any evaluations which might be made of these events, the truth is that, perhaps, in this case, a commemoration would have brought the general public closer to one of the least known and worst valued monarchs in the history of Spain. What is more serious, however, is the fact that the shadow of ignorance and pejorative judgement extend also over the entirety of his reign. Though scarce, research about this period shows a very different reality, in wich decadence and the loss of international hegemony cohabitated with important political initiatives and achievements, both in the monarchy's internal domain and in the international arena.

  8. Monte Carlo photon transport techniques

    International Nuclear Information System (INIS)

    The basis of Monte Carlo calculation of photon transport problems is the computer simulation of individual photon histories and their subsequent averaging to provide the quantities of interest. As the history of a photon is followed the values of variables are selected and decisions made by sampling known distributions using random numbers. The transport of photon is simulated by creation of particles from a defined source region, generally with a random initial orientation in space, with tracking of particles as they travel through the system, sampling the probability density functions for their interactions to evaluate their trajectories and energy deposition at different points in the system. The interactions determine the penetration and the motion of particles. The computational model, for radiation transport problems includes geometry and material specifications. Every computer code contains a database of experimentally obtained quantities, known as cross-sections that determine the probability of a particle interacting with the medium through which it is transported. Every cross-section is peculiar to the type and energy of the incident particle and to the kind of interaction it undergoes. These partial cross-sections are summed to form the total cross-section; the ratio of the partial cross-section to the total cross-section gives the probability of this particular interaction occurring. Cross-section data for the interaction types of interest must be supplied for each material present. The model also consists of algorithms used to compute the result of interactions (changes in particle energy, direction, etc.) based on the physical principles that describe the interaction of radiation with matter and the cross-section data provided

  9. DIAGNÓSTICO DE LA CAPACIDAD REPRODUCTIVA DE TOROS EN GANADERÍAS DE TRES MUNICIPIOS DEL ALTO MAGDALENA

    Directory of Open Access Journals (Sweden)

    Vejarano OA

    2005-12-01

    Full Text Available El objetivo del estudio fue evaluar la funcionalidad reproductiva de toros del alto magdalena analizandoel efecto de la edad y la raza sobre la calidad del semen y otras características reproductivas. La investigaciónse realizó en los municipios de Paicol, La Plata y Nátaga (Huila - Colombia, cubriendo zonas de bosqueseco tropical (bs-T y bosque húmedo premontano (bh-PM. 60 toros de diferentes razas y edades fueronevaluados bajo condiciones de monta natural y sin reposo sexual previo al examen, usando la metodologíarecomendada por la American Society of Therigenology (AST. Para evaluar el efecto del tipo racial sobrealgunas características reproductivas se utilizó un diseño completamente al azar con tres tratamientos ydiferentes número de repeticiones por tratamiento: T1: Bos indicus , T2: Bos indicus x Bos taurus y T3: Bostaurus . El efecto de la edad fue determinado estableciendo un diseño con siete tratamientos y diferentenúmero de repeticiones por tratamientoí: T1: 54 meses de edad. Se aplicó la prueba Diferencia Mínima Significativa para determinarlas diferencias estadísticas y se estableció un modelo de predicción para movilidad masal. Elcomportamiento reproductivo expresado en calidad del material seminal, libido y demás característicasreproductivas en los toros del alto magdalena, estuvo dentro de los valores normales. El tipo racial notuvo un efecto significativo sobre las características reproductivas. Con excepción de la circunferenciaescrotal y el volumen del eyaculado, la edad tampoco ejerció un efecto sobre las variables analizadas. Elmodelo de predicción para la movilidad masal (Y, a partir de un valor dado de circunferencia escrotal (Xes: Y = (1.90275 (X.

  10. SISTEMA AGROFORESTAL PARA EL USO RACIONAL DEL SUELO EN EL MUNICIPIO SAN JOSÉ DE LAS LAJAS, PROVINCIA MAYABEQUE

    Directory of Open Access Journals (Sweden)

    María I. Pavón Rosales

    2014-01-01

    Full Text Available La investigación se realizó en la Finca Forestal Integral (FFI no. 8 del municipio San José de las Lajas provincia Mayabeque, durante los años 2008-2010 con el objetivo de evaluar la incidencia de un Sistema Agroforestal (SAF como alternativa para el uso eficiente del suelo. La metodología de estudio se fundamentó en los principios de la agroecología y se diseñó a partir de la concepción de las FFI, además de la integración de métodos de diagnóstico utilizados en diferentes metodologías para lograr los objetivos propuestos. Se ejecutaron tres etapas que comenzaron con la caracterización edafológica del área de estudio, diagnóstico integral de la finca, además del establecimiento y evaluación de técnicas agroforestales en función del uso racional y eficiente del recurso suelo. Los resultados permitieron reconocer las principales limitaciones y potencialidades de la finca, que hicieron posible la definición, establecimiento y evaluación de técnicas agroforestales como parte de un SAF para el uso racional del suelo. En este contexto la técnica del cultivo en callejones o asociación de especies arbóreas con cultivosanuales, contribuyó al aumento de la eficiencia en el uso de la tierra y la agrobiodiversidad del ecosistema estudiado.

  11. Un estudio ecológico sobre tuberculosis en un municipio de Cuba An ecologic study on tuberculosis in a Cuban municipality

    Directory of Open Access Journals (Sweden)

    Ivette Molina Serpa

    2003-10-01

    Full Text Available Se aplica un estudio ecológico para analizar la incidencia de tuberculosis en el municipio Marianao de la provincia Ciudad de La Habana de la República de Cuba en el período 1995-2000. Se realiza una caracterización de tal incidencia, se identifican patrones de distribución espacial y se determina la relación existente entre los niveles de incidencia de tuberculosis y factores del medio ambiente socioeconómico. La unidad espacial considerada son los 29 barrios del municipio Marianao. Entre otros resultados se identifica un patrón de barrios con tasas altas en la región central del municipio. Las tasas de incidencia se hallan significativamente asociadas de forma directa con el porcentaje de familias con problemas disfuncionales y con el porcentaje de población con determinados niveles de hacinamiento, y de manera inversa con la densidad poblacional, y no se encuentran significativamente asociadas ni con los niveles de educación, ni con el estado de la vivienda predominantes en el barrio.An ecological study analyzes tuberculosis incidence in the municipality of Marianao, Havana City Province, Cuba. The study characterizes tuberculosis incidence, identifies spatial distribution patterns, and relates tuberculosis incidence rates to socioeconomic factors. The spatial units are the 29 neighborhoods in the municipality of Marianao. A pattern of neighborhoods with high rates located in the central region of the municipality is identified. Incidence rates are directly (and significantly related to the percentage of families presenting dysfunctional problems and the percentage of the population with certain levels of overcrowding and inversely related to population density, while not significantly associated with level of schooling or prevailing housing conditions.

  12. El conocimiento local en la gestión del riesgo de inundaciones: comunidades del municipio de Mompós Bolívar

    OpenAIRE

    Mojica Velez, Jose Manuel

    2013-01-01

    Resumen: La investigación explora el conocimiento local y la capacidad adaptativa de las comunidades de Las Boquillas y del barrio Faciolince del municipio de Mompós frente a las inundaciones. La finalidad que tiene es determinar cómo los conocimientos y las capacidades que tienen las comunidades se pueden incorporar en la gestión local del riesgo. La metodología utilizada fue la Investigación-Acción-Participación, las técnicas aplicadas fueron cartografía social, calendario estacional, línea...

  13. Percepción social sobre la gestión de residuos urbanos: el caso del municipio de Puçol (Valencia)

    OpenAIRE

    Agulló Calatayud, Víctor; González Alcaide, Gregorio; Abellán Andrés, Carlos

    2011-01-01

    El presente estudio analiza la situación de la gestión de los residuos y la problemática medioambiental del municipio de Puçol (Valencia) a partir del análisis estadístico multivariante de datos de una encuesta sociológica. Se ponen de manifiesto los siguientes aspectos: a) El porcentaje de población que recicla correctamente todo tipo de residuos es únicamente del 8,93% y el porcentaje de personas que reciclan algún tipo de residuo es del 60,97%; b) tener un alto nivel de estudios y el hecho...

  14. El Procede y el Piso en la incorporación del suelo de propiedad social a usos urbanos en los municipios conurbados de la ZMCM

    OpenAIRE

    Lucy Nelly Maya González

    2004-01-01

    En este artículo se revisan los mecanismos de incorporación regulada del suelo de origen social1 al desarrollo urbano en el ámbito de los municipios conurbados de la Zona Metropolitana de la Ciudad de México (ZMCM). A diez años de las modificaciones al artículo 27 constitucional se explora la forma en que los programas Procede y Piso han participado en la regulación del cambio de uso de suelo de rural a urbano, los factores que han influido en que los ejidatarios hayan decidido...

  15. LA PSICOLOGÍA ORGANIZACIONAL, VÍNCULO CON EL PROCESO DE PREVENCIÓN SOCIAL EN EL MUNICIPIO JESUS MENÉNDEZ

    OpenAIRE

    Aliek Méndez Bordón; Marlene Goytizolo Andreus

    2012-01-01

    Con el objetivo de mejorar los resultados en la labor de prevención y atención social en el municipio Jesús Menéndez, contribuir al perfeccionamiento de la gestión institucional de las organizaciones laborales en el territorio y fortalecer la pertinencia de la carrera de Licenciatura en Psicología de la Sede Universitaria Municipal Jesús Menéndez, se adecuan los programas de estudio de la disciplina de Psicología Organizacional en función del diagnóstico de empresas, organismos y entidades ec...

  16. Prevalencia de parálisis cerebral infantil en los menores de diez años en el municipio de Sabaneta, Antioquia

    OpenAIRE

    Eliana Mejía; Mónica Guzmán; Juan González; Diana Angel

    2001-01-01

    La parálisis cerebral infantil (PCI) es una enfermedad altamente
    invalidante, con un gran impacto familiar y social. En nuestro país se
    desconoce su frecuencia de presentación y el objetivo de este estudio
    es reportar su prevalencia en el municipio de Sabaneta (Antioquia),
    para conocer así su verdadera magnitud y de esta forma las autoridades sanitarias puedan instaurar programas de prevención y rehabilitación

     

    &...

  17. Evaluación de la planta de potabilización de agua del municipio de Villamaría Aquamana S.A.

    OpenAIRE

    Garzón Varón, Oscar Andrés; Rosas Osorio, Wilkinson

    2003-01-01

    En este documento se presentan los procedimientos seguidos y resultados obtenidos en la evacuación realizada a la planta de potabilización de agua de la empresa de acueducto del municipio de Villamaría (Caldas) desarrollando la metodología establecida por la Organización Mundial de la Salud (O.M.S.), la Organización Panamericana de la Salud (O.P.S.), el CEPIS y acogida por el Ministerio de Salud de Colombia en el año de 1989, para la Evaluación, Operación y Mantenimiento de plantas de tratami...

  18. Evaluación de la calidad del agua superficial y subterránea utilizada para el consumo del ganado bovino en un municipio de provincia Habana

    OpenAIRE

    Soca Pérez Maylin, MSc, Pérez Liumar, Dr MV*; Soca Pérez Mildrey, MSc, DrC.**,; Martínez Santiesteban José A, DrC.; Suárez Fernandez Yolanda. E, DrC; Fuentes Cintra Maritza, MSc.

    2006-01-01

    El presente trabajo se realizó en un municipio de provincia Habana, con el objetivo de evaluar la contaminación del agua que se usa para el consumo de los animales y la limpieza del equipo de ordeño. Se trabajaron seis fuentes de agua que abastecen a igual cantidad de unidades ganaderas, tres de las cuales corresponden a fuentes de aguas superficiales (micropresas) y otras tres a aguas subterráneas (pozos). Se tomaron muestras en cada una de las zonas bajo estudio, las mismas se realizaro...

  19. Formulación participativa del presupuesto en el municipio Caroní: comparación con la experiencia de Porto Alegre

    OpenAIRE

    María Pilar GARCÍA-GUADILLA; Rosa Amelia GONZÁLEZ

    2009-01-01

    RESUMEN: El presente artículo evalúa la experiencia de descentralización local que se lleva a cabo desde 1990 hasta la fecha en el Municipio Caroní de Ciudad Guayana, Venezuela. Focalizándose en la elaboración del presupuesto participativo, se identifican los alcances y limitaciones de algunas prácticas de democracia participativa tales como la participación ciudadana en la gestión local. Finalmente, se hace una comparación con la experiencia de elaboración del presupuesto en forma participat...

  20. Caracterización del consumo de digoxina en la insuficiencia cardíaca en el municipio de Rodas (Cienfuegos, Cuba)

    OpenAIRE

    Milián Vázquez, Pedro Miguel; Cepero Pérez, Ivette; Espinosa Brito, Alfredo; Padrón Velásquez, Luis; Hernández Fernández, Juana; Linares Borges, Arlette; Reyes Hernández, Dunia; Vázquez Montero, Lidia; Quirós Enríquez, Maira; Mass Sosa, Luis Alberto

    2004-01-01

    Se presenta un estudio descriptivo de corte transversal en pacientes mayores de 15 años con insuficiencia cardíaca que fueron tratados con digoxina en 15 consultorios médicos del municipio de Rodas, Cienfuegos, Cuba, en el primer semestre del 2003. Se estudiaron 130 pacientes registrados en la Farmacia Municipal. Se realizó una revisión de las historias clínicas individuales, hojas de egresos hospitalarios y entrevistas a los pacientes. La mayor parte de los pacientes que consumían digoxin...

  1. Aplicación del concepto geomarkefing al caso de la microindustria del vestido en el Municipio de Nezahualcóyotl, Estado de México

    OpenAIRE

    Carlos Téllez Valencia; Adrián Guillermo Aguilar

    2000-01-01

    El objetivo central de este trabajo es el de proponer un marco metodoiógico que identifique opciones de desarroilo económico y social para ¡as microempresas. Para tal fin. se apiica el concepto de geomarketing a un estudio de caso sobre las microindustrias del vestido en el municipio de Nerahuaicóyotl. La utilidad del concepto radica en determinar un diagnóstico tanto de los productores (oferta) como de¡ perfil de los consumidores (demanda), para evaluar cabalmente un estudio de m...

  2. Estación depuradora de aguas residuales (E.D.A.R.) en el municipio de Carcelén (Albacete).

    OpenAIRE

    LÓPEZ GÓMEZ, GUILLERMO

    2016-01-01

    [ES] Desde hace algunos años se han evidenciado vertidos de aguas residuales urbanas en la población de Carcelén (Albacete) que superan los valores límites máximos autorizados por el Organismo de Cuenca, debido a un aumento de la carga orgánica de diseño de la depuradora actual. El objeto del presente Proyecto Final de Grado es el diseño de una nueva Estación Depuradora de Aguas Residuales adecuada a las características actuales de los vertidos generados en este municipio. Para la selecc...

  3. Vulnerabilidad social, institucionalidad y percepciones sobre el cambio climático: un acercamiento al municipio de San Felipe, Costa de Yucatán

    OpenAIRE

    Denise Soares; Isabel Gutiérrez

    2011-01-01

    Se contribuye al avance de la discusión sobre vulnerabilidad social frente al cambio climático y a la par se presenta un estudio de caso sobre percepciones acerca de la vulnerabilidad social en el municipio de San Felipe, en la costa de Yucatán, Méx., a fin de conocer, de modo contextualizado y empírico, las distintas expresiones de vulnerabilidad social que padecen los también distintos actores sociales locales. Los resultados encontrados revelan que la idea ...

  4. La enseñanza de la educación física y el deporte en las colonias de vacaciones del municipio de Avellaneda

    OpenAIRE

    Ganz, Nancy; Bamonte, Luis; Benito, Francisco J.; Ronconi, Piero

    2013-01-01

    La presentación que a continuación se detalla, es una investigación que se propuso indagar aspectos relacionados con la enseñanza de la Educación Física y los deportes en las colonias de verano del Municipio de Avellaneda, las cuales, implementadas desde el gobierno local con fines inclusivos, reciben a sectores sociales en condiciones de vulnerabilidad. La relevancia de este trabajo se relaciona con dos ejes bien detallados, uno, con los aspectos vinculados a la educación no formal de la ...

  5. Prevalencia de anemia infecciosa equina en el municipio de Santa Clara, Cuba - Prevalence of equine infectious anemia in the municipality of Santa Clara, Cuba

    Directory of Open Access Journals (Sweden)

    Castillo Cuenca, Julio C

    2011-01-01

    Full Text Available ResumenDada la naturaleza de contagiosidad y fatalidad de la anemia infecciosa equina nos propusimos realizar un estudio serológico con el objetivo de conocer la tasa de prevalencia de la enfermedad en el municipio de Santa Clara, provincia de Villa Clara, Cuba.SummaryGiven the nature of infectiousness and fatality of the equine infectious anemia we intended to carry out a serological study with the objective of knowing the prevalence rate of the disease in the municipality of Santa Clara, Villa Clara province, Cuba.

  6. Comportamiento de los traumatismos dentoalveolares en alumnos de las ESBU del municipio Artemisa Behaviors of dentoalveolar traumata present in urban basic secondary schools (UBSS) pupils of Artemisa municipality

    OpenAIRE

    Mileydis Viñas García; Yudit Algozaín Acosta; Ricardo Rodríguez Llanes; Licerba Álvarez Campo

    2009-01-01

    El trauma dentoalveolar (TDA) es un problema de salud pública debido a su incidencia y a las graves secuelas que puede dejar. Se realizó un estudio descriptivo, retrospectivo y de corte transversal para determinar el comportamiento de los TDA en alumnos de las escuelas secundarias básicas urbanas del municipio Artemisa en el período comprendido entre enero y junio de 2008. El universo fue de 2 684 alumnos y de estos, 309 constituyeron la muestra al estar afectados por algún tipo de TDA. A los...

  7. Inventario de emisiones y Plan de Acción para la Energía Sostenible del municipio de Cartagena

    OpenAIRE

    Mercader Siles, Patricio

    2012-01-01

    El presente Plan ha sido elaborado por la adhesión voluntaria a la iniciativa europea “Pacto de los Alcaldes”, a través de la cual el municipio de Cartagena hace suyos los objetivos marcados por la Unión Europea en materia de reducción de emisiones de gases de efecto invernadero de reducir dichas emisiones en un 20% para el año 2020. Este Plan de Acción se divide en dos partes bien diferenciadas, en primer lugar un inventario de consumo de energía en el término municipal y las emi...

  8. Proyecto de formación ambiental en el municipio de Concepción Las Minas : Concepción Las Minas, Chiquimula, Guatemala

    OpenAIRE

    Saumell Xuriguera, Georgina; Boada, Martí, 1949-

    2007-01-01

    El presente trabajo pretende implantar un proyecto de formación ambiental y, a la vez, crear el marco físico y social para que así sea. De esta forma, se darán a conocer y mejorarán los conocimientos ambientales en la población del municipio de Concepción Las Minas, con el fin de que puedan mejorar sus técnicas a la hora de gestionar su territorio y, a la vez, ampliar sus conocimientos ambientales, útiles en el campo de la educación. Para realizar estas capacitaciones fue necesaria una descri...

  9. Valores y desarrollo educativo : estudio de caso del municipio de Consuelo, San Pedro de Macorís, Republica Dominicana (1959-2012)

    OpenAIRE

    Elmúdesi Espaillat, Leonor Rosario

    2015-01-01

    Educar en valores constituye un imperativo moral de todo proyecto educativo ya que favorece la creación del marco ético donde el educando encarna su construcción como persona y como ciudadano. Dada la importancia de nuevas comprensiones en torno a la educación como proyecto social, este trabajo se ha enfocado en la línea de investigación de la educación en valores, haciendo especial énfasis en los vinculados a la formación ciudadana. El contexto del estudio fue el Municipio de Consuelo, Pr...

  10. Contribución de las actividades de marketing aplicadas en las fundaciones en el municipio de Arauca a la estrategia de competitividad y autosostenibilidad - estudio de caso

    OpenAIRE

    López Céspedes, Martha Inés

    2013-01-01

    Las empresas del tercer sector han tenido un auge al interior de la literatura debido a su contribución a la economía de los países y su enfoque social de beneficio para la sociedad. La sostenibilidad de estas organizaciones depende de diferentes factores, entre ellos, la competitividad y el marketing que realizan para encontrar el apoyo y la cooperación de aliados. El presente estudio aborda el caso de la Fundación El Alcaraván del municipio de Arauca en donde se analiza la contribución de l...

  11. Actividades productivas y manejo de la milpa en tres comunidades campesinas del municipio de Jesús Carranza, Veracruz, México

    OpenAIRE

    Juana Ortiz-Timoteo

    2015-01-01

    En este estudio se analizan las actividades productivas y el estado del conocimiento actual que poseen los campesinos sobre el manejo de la milpa en tres comunidades del municipio de Jesús Carranza, Veracruz. La información se obtuvo mediante la aplicación de un cuestionario y una entrevista semiestructurada de aspectos agrícolas, en una muestra de 30 informantes. Los resultados muestran que en estas comunidades se practican dos tipos de milpa: milpa de tapachol que es un policultivo y se sie...

  12. Situación profesional de los recursos humanos de la actividad física y el deporte en el municipio de Coslada

    OpenAIRE

    Gallardo Pérez, Jana; Campos Izquierdo, Antonio

    2011-01-01

    El objetivo principal del estudio es conocer, la situación profesional de las personas que trabajan en funciones de actividad física y deporte en organizaciones subcontratadas en el municipio de Coslada. En él, se describen la situación socio-demográfica, laboral y formativa así como, las diferentes funciones laborales desarrolladas por las personas objeto de estudio. La metodología utilizada es descriptiva, en la que se realiza entrevista estandarizada por medio de cuestionario a 112 persona...

  13. Los conocimientos tradicionales de la palma datilera y sus deri-vados como atractivo turístico-cultural del municipio Díaz, Estado Nueva Esparta

    OpenAIRE

    Bracho Toro, Cecilia; Lunar Leandro, Rafael Antonio

    2007-01-01

    The actual state of the traditional knowledge about the date palm, its products and use as a cultural touristic attraction in Municipio Díaz, Nueva Esparta state, is diagnosticated. A descriptive and field study of the community of Fuentidueño, using the semi-structured interviews was made. The com-munity has an amount of traditional knowledge due to its wisdom (learning). The new generation is hardly incorporated to learn this traditional knowledge about the date palm and its products, are t...

  14. Factores determinantes de la perdurabilidad de las empresas mipymes comerciales en el Municipio de Sincelejo – Sucre: apreciaciones de los directivos

    OpenAIRE

    Anaya Vélez, Edgar José

    2014-01-01

    El presente trabajo de investigación tiene por objetivo verificar los factores de perdurabilidad: identidad organizacional; la formalización soporte para las decisiones; eficiencia en procesos; consolidación; diferenciación; gestión integral y los factores que aportan a la eficiencia en las empresas comerciales en el municipio de Sincelejo – Sucre, analizando como estos factores han incidido en su perdurabilidad. El método de investigación que se utiliza es descriptivo - explorativo, con un...

  15. Análisis económico del empleo de la fuerza de trabajo en la Agricultura Urbana del Municipio de Sancti Spíritus (Proyecto)

    OpenAIRE

    Irenio Curbelo Tribicio

    2008-01-01

    Este trabajo investigativo se realizó en la Granja Urbana perteneciente al municipio de Sancti Spíritus y tiene como finalidad la aplicación y evaluación de un conjunto de instrumentos de análisis económicos y financieros en la categoría Fuerza de Trabajo y Salarios determinando los factores que influyen en la interrelación y variación del VAB, Productividad del Trabajo y Salario Medio.

  16. El sistema ejidal, inhibidor del desarrollo rural. Casos de los municipios de Casas y de Güémez, Estado de Tamaulipas, México.

    OpenAIRE

    Trujillo Bautista, Jorge Martín

    2012-01-01

    La presente tesis doctoral aborda el tema rural en el estado de Tamaulipas, México. Estudia los casos de dos municipios: Casas y Güémez. Analiza los factores que son inhibidos por el sistema ejidal para alcanzar el desarrollo de las familias ejidatarias. Tiene como su centro de análisis al Ejido, como fenómeno político agrario y mediante una metodología deductiva, a lo largo de siete capítulos, describe y explica la presencia de agentes internos y externos en la compleja problemática que ...

  17. Gestión de Tecnología en Empresas de Clase Mundial del Sector Bebidas en Venezuela Caso: Municipio San Francisco – Estado Zulia

    OpenAIRE

    Francisco Batlle Rois Méndez; Judeira Batista Ojeda; Maritza Zambrano Prieto

    2014-01-01

    La investigación se planteó como objetivo analizar la gestión de tecnología en empresas de clase mundial delsector bebidas del municipio San Francisco del estado Zulia, Venezuela. Para alcanzar el objetivo propuesto se revisaron los postulados del Modelo Nacional de Tecnología (MNT) (2009) y los aportes teóricos de autores como Gaynor (1999), Peters (2006) y Bosch (2000), en relación con la gestión de tecnología. El estudio fue de tipo descriptivo bajo un diseño de campo, no experimental-tran...

  18. Quebrada la Honda del municipio de Los Santos Santander, un laboratorio pedagógico para el bienestar de la comunidad rural La Granja

    OpenAIRE

    Calderón Rueda, José Cristian

    2011-01-01

    La finalidad del siguiente trabajo de investigación es contribuir a la construcción de conceptos, procedimientos y manejo de instrumentos propios de las ciencias naturales y la química, para el estudio del agua en un ecosistema acuático, en la quebrada La Honda del municipio de Los Santos Santander, con estudiantes del grado noveno del Colegio Integrado Mesa de Jéridas, utilizando para ello el método de resolución de problemas. La herramienta de trabajo dentro de esta metodología es la guía...

  19. Las Competencias Legales del Racional en la Organización Administrativa y Contable del Municipio de Valencia (Comienzos del Siglo XVII)

    OpenAIRE

    Francisco Mayordomo García-Chicote

    2005-01-01

    La organización administrativa y contable de los mayores municipios españoles, a comienzos del XVII, es un tema que apenas ha sido abordado por los investigadores de la historia de la Contabilidad y del Derecho. En este trabajo se estudian los textos legales (Capitols del Quitament y Ordenanzas de la Taula de Canvis) que regulaban aquellas cuestiones en relación con la ciudad de Valencia, y sobre todo se hace un detenido análisis del cargo municipal (el Racional) que se responsabilizaba de la...

  20. Huertos urbanos: elementos de regulación y administración de huertos urbanos comunitarios en el municipio de Rubí

    OpenAIRE

    Corridoni, Lucia

    2011-01-01

    El objetivo último del presente trabajo consiste en dar unos criterios de diseño para realizar el proyecto de un espacio de huertos urbanos en el municipio de Rubí, más concretamente en la zona de los valles de Sant Muç, donde las administraciones locales prevén crear un parque territorial equipado (POUM de Rubí de 2009). La propuesta tiene como referencia experiencias concretas y nociones teóricas relativas a la agricultura biológica, aplicadas a la situación concreta de Rubí y a las c...

  1. Utilización del Boophilus microplus como remedio isopático en el control del ectoparásito en el Municipio de Aguazul (Casanare)

    OpenAIRE

    Francisco Javier Niño Murcia; Edwin Gustavo Morales Arguello

    2005-01-01

    En este estudio se demostró la efectividad de un remedio isopático vía oral, para el control de la garrapata Boophilus microplus, inocuo para los animales, medio ambiente y el hombre, evitando residuos de plaguicidas en el producto final. La investigación se realizó en una finca ubicada en el municipio de Aguazul (Casanare); localizada a los 05°10’23’’ de latitud norte y 72°33’17’’ de longitud oeste desde Greenwich, altitud: 300 msnm, temperatura media: 27ÚC. Precipitación anual media: 2.441 ...

  2. Urbanización popular y regularización de la tenencia de la tierra. Dos casos en municipios conurbados del Estado de México

    OpenAIRE

    Schteingart, Martha

    2013-01-01

    Note portant sur l’auteur INTRODUCCIÓN En este trabajo nos proponemos presentar dos casos de urbanización popular correspondientes a municipios conurbados del Estado de México que forman parte de la Zona Metropolitana de la Ciudad de México. Estas colonias fueron estudiadas, junto con otras dos del Distrito Federal, en una investigación en la que, además de los problemas de acceso al suelo, se consideran otros aspectos como la vivienda y los servicios, el empleo, la educación y las caracterís...

  3. Modelo de gobierno electrónico para la alcaldía rural del municipio autónomo Colón

    Directory of Open Access Journals (Sweden)

    Albanio Alcántara Acosta

    2010-09-01

    Full Text Available En la actualidad el avance de las nuevas tecnologías y el progresivo acceso de los ciudadanos a la red de Internet esta abriendo camino a nuevas posibilidades en el campo del gobierno, descubriendo a Internet como una instrumento de evolución en la forma de relación entre las administraciones públicas y los ciudadanos.El propósito del presente estudio fue proponer un modelo de gobierno electrónico para la Alcaldía rural del municipio autónomo Colón. La investigación fue de tipo descriptiva y de campo.La población y muestra se dividió en dos tipos, la población A 101.219 habitantes del municipio Colón quedando su muestra en 204 sujetos y la población B de 13 Coordinadores y jefes de unidades de la Alcaldía tomándolos como censo poblacional. Utilizando instrumentos con preguntas cerradas para la población A y tipo likert para la población B. Se aplicaron estadísticas descriptivas con frecuencias absolutas y porcentuales para la población A, permitiendo concluir que la brecha digital en el municipio es del 67%, viéndose afectada mayormente por el nivel académico de la población, de igual manera se realizó un análisis de varianza para la población B obteniendo como resultado que la alcaldía necesita la contratación de personal especializado en el área de tecnología, así como también la creación de un portal Web que contenga los servicios ofrecidos por la alcaldía. Se recomienda establecer el Modelo de Gobierno Electrónico para la Alcaldía Rural del Municipio Autónomo Colón del Estado Zulia propuesto planteado en esta investigación.Palabras Claves: Gobierno electrónico, brecha digital, TIC, gobernabilidad

  4. Impacto de la religión en el espíritu capitalista de los municipios del Alto Magdalena Medio

    OpenAIRE

    Cañas Duque, Abelardo

    2006-01-01

    La Investigación “Impacto de la Religión en el Espíritu Capitalista de los Municipios del Alto Magdalena Magdalena Medio”, tiene una orientación eminentemente weberiana; se realizó con base en estudios realizados por: Edward Thompson en la formación histórica de la clase obrera en Inglaterra; Jean Pierre Bastian en Costa Rica y Mauricio Beltrán Cely en Bogotá. En éste, se dan a conocer aspectos generales sobre la vida de los protestantes en la región, haciendo énfasis en el comportamie...

  5. Evaluación de 16 genotipos de quinua dulce (Chenopodium quinoa Willd.) en el municipio de Iles, Nariño (Colombia)

    OpenAIRE

    Delgado P. Adriana I.; Palacios C. Jaime H.; Betancourt G. Carlos

    2009-01-01

    Debido a su alto potencial agrícola y nutritivo, el interés por la quinua se ha incrementado en los últimos años, convirtiéndola en alternativa de diversificación para la región andina. Sin embargo, se han detectado necesidades limitantes, así como buenas posibilidades de mejoramiento genético, aún escasamente exploradas. En la presente investigación, llevada a cabo en la vereda San Francisco del municipio de Iles, Nariño, se evaluaron 16 líne...

  6. Evaluación de 16 genotipos de quinua dulce (chenopodium quinoa willd.) en el municipio de iles, nariño (colombia)

    OpenAIRE

    Delgado P., Adriana I.; Palacios C., Jaime H.; Betancourt G., Carlos

    2009-01-01

    Debido a su alto potencial agrícola y nutritivo, el interés por la quinua se ha incrementado en los últimos años, convirtiéndola en alternativa de diversificación para la región andina. Sin embargo, se han detectado necesidades limitantes, así como buenas posibilidades de mejoramiento genético, aún escasamente exploradas. En la presente investigación, llevada a cabo en la vereda San Francisco del municipio de Iles, Nariño, se evaluaron 16 líneas de quinua dulce. Una parte de ellas fueron sele...

  7. Comportamiento de la hipertensión arterial en niños y adolescentes en el municipio Amancio, septiembre de 2011 a mayo de 2012

    OpenAIRE

    Mileidis Brizuela Cabrera; Raiza Garcez Ruiz; Misleidis Puga Ramírez; Disney Varona García; Bertha Margarita Pérez Morilla

    2015-01-01

    Se realizó un estudio descriptivo de todos los pacientes diagnosticados como hipertensos en el área de salud de Amancio, perteneciente al policlínico docente “Luis Aldana Palomino”, con la finalidad de determinar el comportamiento de la Hipertensión Arterial (HTA) en niños y adolescentes. El universo lo constituyeron los niños y adolescentes del municipio (7627) y la muestra fue de 42 niños y adolescentes con HTA confirmada, a quienes se les aplicó un cuestionario, como instrumento para la re...

  8. Influencia de la disponibilidad de nutrientes sobre los cambios espaciotemporales de la comunidad de fitoplancton en el litoral del Municipio de Guasave, Sinaloa.

    OpenAIRE

    Ulloa Pérez, Ana Elsi

    2015-01-01

    Con la finalidad de entender los mecanismos que regulan los cambios en las poblaciones del fitoplancton en el ecosistema costero del norte de Sinaloa, se realizaron 6 campañas de muestreo en 25 estaciones en el litoral del Municipio de Guasave, Sinaloa, durante el período noviembre de 1999 - agosto de 2000. Se tomaron muestras de agua superficiales para la determinación de la abundancia y composición del fitoplancton, así como para el análisis de nutrientes (amonio, nitritos, nitratos, fósfor...

  9. Caracterizacion fisiológica del crecimiento y desarrollo del fruto de mango (mangifera indica l.) variedad van dyke en el municipio de el espinal

    OpenAIRE

    2011-01-01

    El estudio se realizó en la finca Frutol del Municipio de El Espinal, departamento del Tolima, situado a una altura de 431 m.s.n.m., con precipitación, temperatura y Humedad Relativa promedio anual de 1.368 mm / año, 29°C y 70%.   Se realizó el seguimiento de los cambios ocurridos durante el crecimiento y desarrollo del mango Variedad Van Dyke, desde la antesis hasta la madurez fisiológica: Diámetros longitudinal, transversal, el volumen, la gravedad específica, el peso fresco y seco, color ...

  10. Finanzas y gestión pública local en Colombia: el caso de la Hacienda en el municipio de Medellín

    OpenAIRE

    Alexander Tobón; Mauricio López; Jenifer González

    2012-01-01

    La consolidación de la descentralización fiscal en Colombia ha permitido avances significativos en la gestión financiera de los municipios, evidentes en indicadores que permiten hacer seguimiento y evaluación permanente de la administración. Este artículo presenta un análisis de las finanzas públicas de Medellín realizado a través de algunos indicadores fiscales agregados y de la estimación de dos modelos econométricos de sensibilidad para los gastos de inversión y los ingresos tributarios. S...

  11. Conocimientos, actitudes y prácticas acerca de infecciones de transmisión sexual en adolescentes del municipio de Caldas (Colombia)

    OpenAIRE

    Jaiberth Antonio Cardona Arias; Paulina Arboleda Carmona; Carolina Rosero Ascuntar

    2013-01-01

    Objetivo: Analizar los conocimientos actitudes y prácticas acerca de las infecciones de transmisión sexual en adolescentes escolarizados del municipio de Caldas (Antioquia, Co- lombia), según aspectos sociodemográficos. Materiales y métodos: Estudio transversal en 567 adolescentes. Los datos se almacena- ron y analizaron en SPSS 18.0 con base en proporciones, medidas de resumen, intervalos de confianza para la diferencia de proporciones y pruebas no paramétricas como chi-cua- drado, H de Krus...

  12. Factores críticos para la medición de la calidad de servicio del aseo urbano en el municipio Maracaibo

    OpenAIRE

    Alejandrina Sáez

    2011-01-01

    El objetivo de la presente investigación consiste en determinar los factores críticos para medir la calidad percibida por los usuarios del servicio de aseo urbano domiciliario en el Municipio Maracaibo. Previa revisión documental sobre calidad de servicio y aseo urbano, se diseñó una escala estructurada tomando como base el modelo SERVPEF y adicionando una dimensión para medir la incidencia de la participación ciudadana en la calidad del servicio. Para obtener la data de la prueba piloto y...

  13. La actual concentración de la propiedad rústica y su riqueza catastral en los municipios de España

    OpenAIRE

    Pillet Capdepón, Félix

    2008-01-01

    Estudio geográfico sobre la concentración de la propiedad rústica y la riqueza catastral de la tierra, basado en las estadísticas de todos los municipios de España, y con concreción en aquéllos con mayores niveles en ambos indicadores. Se han utilizado dos fuentes de datos: en primer lugar, el Catastro de Rústica de la Dirección General del Catastro para aquellas comunidades autónomas con un sistema fiscal normalizado; y en segundo lugar, información aportada por las diputaciones forales de l...

  14. Implementación de un sistema de gestión del plan nacional de salud pública en los municipios colombianos

    OpenAIRE

    Patiño Flórez, Rosa Isabel

    2012-01-01

    En esta investigación se presenta la propuesta para la implementación del sistema de gestión del Plan Nacional de Salud Pública en los municipios colombianos. El texto se encuentra dividido en tres partes: implementación, donde se presenta el proceso general de formulación y evaluación de proyectos; control estratégico, en el que se plantea la herramienta de Balanced Scorecard o cuadro de mando integral; y finalmente, los formatos.

  15. Estrategia de intervención sobre sexualidad e infecciones de transmisión sexual en adolescentes municipio Quime, Bolivia.2010

    OpenAIRE

    Yacquelynes Corona-Hechavarria; Caridad Mastrapa-Reyes

    2012-01-01

    Aborda un estudio de intervención para evaluar el conocimiento sobre sexualidad e infecciones de transmisión sexual de adolescentes del municipio Quime, La Paz Bolivia en el año 2010 .El universo estuvo constituido por 81 adolescentes, de ellos 43 constituyeron la muestra. Se aplicó una encuesta antes y después del programa de intervención.Predominó el grupo de edades de de 16 a 17 años y el sexo masculino Al inicio la mayoría no habían tenido relaciones sexuales y posterior a la implantación...

  16. PARTICIPACIÓN COMUNITARIA EN EL GOLFO DE URABÁ: EL CASO DEL CORREGIMIENTO BOCAS DEL ATRATO Y LA VEREDA EL ROTO, MUNICIPIO DE TURBO, ANTIOQUIA

    OpenAIRE

    TABORDA MARÍN ALEXANDER; MALDONADO LIZARAZO CAROLINA; PALACIO BAENA JAIME; VÁSQUEZ ARANGO JAIRO GUILLERMO

    2010-01-01

    El texto expone, desde el estudio de los aspectos socioculturales y el abordaje particular de la participación comunitaria, los resultados de un proyecto experimental de acuicultura de róbalo (Centropomus undecimalis) y sábalo (Megalops atlanticus) en el Corregimiento de Bocas del Atrato y la vereda El Roto, del Municipio de Turbo, Antioquia. Trabajo interdisciplinario que busca generar herramientas de conocimiento científico para contribuir en la mitigación de la disminución del recurso ícti...

  17. Biosólidos en la producción de maíz: impacto socioeconómico en zonas rurales del municipio de Puebla

    OpenAIRE

    Eduardo González Flores; Engelberto Sandoval Castro; Andrés Pérez Magaña

    2014-01-01

    La generación de desechos manifiesta la compleja relación sociedad-naturaleza. Los biosólidos son un subproducto del trata- miento de aguas residuales urbanas y su disposición fi nal se ha convertido es un problema ambiental. Una opción es utili- zarlos como enmiendas orgánicas en suelos agrícolas. En el municipio de Puebla, Mé- xico, se generan 200 t d-1 de biosólidos que se utilizan en suelos agrícolas en zonas ru- rales. Los efectos ocasionados al suelo y al ambiente han sido muy estudiado...

  18. Municipio y crédito en el Aragón moderno : el endeudamiento censal del concejo darocense (siglos XVI-XVII)

    OpenAIRE

    José Antonio MATEOS ROYO

    1999-01-01

    Este artículo analiza la situación financiera de los municipios en Aragón durante los siglos xvi y xvii a través de un ejemplo concreto: el Concejo de Daroca. El constante recurso al crédito generó un creciente endeudamiento que provocó su bancarrota durante la segunda mitad del siglo xvii. El estudio muestra la evolución de este proceso de endeudamiento y sus causas. Establece asimismo la extracción social de los acreedores del Concejo y las principales...

  19. Saneamiento ambiental y enfermedades de transmisión digestiva en el municipio Plaza de la Revolución, 1992-1997

    OpenAIRE

    Asela María del Puerto Rodríguez; Miriam Concepción Rojas; Ana Margarita Iglesias Fernández

    1999-01-01

    Se presenta un estudio ecológico, donde se exponen los resultados de algunos indicadores de saneamiento ambiental (calidad del agua y lugares con contaminación hídrica, recolección de desechos sólidos y evacuación de residuales líquidos) y el comportamiento de la morbilidad por enfermedades de transmisión digestiva como hepatitis, enfermedades diarreicas agudas e intoxicación alimentaria en el municipio Plaza de la Revolución, en el período comprendido entre 1992 y el primer semestre de 1997....

  20. Evaluación del desempeño de servicios de atención primaria en salud: experiencia en municipios rurales en santander, colombia

    OpenAIRE

    2013-01-01

    Objetivo Evaluar el desempeño de los servicios públicos de salud de seis municipios del departamento de Santander, Colombia, respecto al desarrollo de los atributos de la Atención Primaria en Salud, en el marco de la implementación de esta estrategia en este territorio.Métodos Evaluación rápida de desempeño de los servicios de salud por medio de un diseño comparativo trasversal, basada en metodología propuesta por Starfield. Se entrevistaron usuarios, profesionales y decisores de tres municip...

  1. Evaluación del programa de actividad física jugada, dentro del programa integral de deporte escolar del municipio de Segovia (PIDEMSG)

    OpenAIRE

    Pérez Mate, Verónica

    2014-01-01

    El presente estudio se basa en la evaluación del cuarto curso del programa de Actividad Física Jugada (PAFJ) dentro del Programa Integral de Deporte Escolar del Municipio de Segovia (PIDEMSG), para conocer los puntos fuertes y débiles del programa y posibles mejoras para el futuro convenio plurianual, así como la formación recibida por los monitores del PAFJ durante el curso escolar. Para ello, se ha utilizado una metodología cualitativa, a través del análisis de las entrevista...

  2. Caracteres morfológicos de vainilla (Vanilla planifolia J.) utilizados por el agricultor en la selección de material reproductivo en cuatro municipios del Totonacapan, México.

    OpenAIRE

    Baltazar Nieto, Pablo

    2010-01-01

    El objetivo de este estudio fue conocer los caracteres morfológicos de la planta de vainilla (Vanilla planifolia J.) de hoja, tallo, fruto y esqueje que el productor usa en la selección de su material de reproducción y comprender su importancia en la conservación de la especie en cuatro municipios de la región del Totonacapan, México. Los municipios en los que se hizo el estudio fueron: Venustiano Carranza y Caxhuacan del estado de Puebla y de Papantla de Olarte y Gutiérrez Zamora del estado ...

  3. La dimensión social del desarrollo urbano sostenible: construcción de indicadores de percepción ciudadana. Caso: observatorios para el desarrollo sostenible del municipio de Manizales.

    OpenAIRE

    Ríos Martínez, Gloria Beatriz

    2003-01-01

    Para que los procesos de participación comunitaria se articulen al desarrollo local, es indispensable abordar la percepción ciudadana y conocer los grados de satisfacción y pertenencia que tienen los ciudadanos con respecto a la calidad de la vida del municipio. Igualmente, identificar el significado que tiene para los distintos actores municipales las dimensiones social, económica y ambiental del Desarrollo Sostenible. En el Municipio de Manizales – Colombia, se ha desarrollado un modelo de ...

  4. Evaluación del proyecto solución integral de residuos sólidos Cancún, en el Municipio de Benito Juárez, Quintana Roo, México

    OpenAIRE

    Ramírez Martínez, Oscar Fernando

    2016-01-01

    El manejo de los residuos en el municipio de Benito Juárez ha enfrentado durante diferentes periodos deficiencias que han repercutido en la salud pública de los pobladores, en la imagen urbana y en los recursos naturales. Como respuesta la administración del municipio de Benito Juárez 2011-2013, propuso como política pública la descentralización del manejo de residuos sólidos urbanos, donde se incluyeron estrategias para fomentar la prevención, valorización y tratamiento, además de las etapas...

  5. Clave para especies de ludwigia l. (onagraceae) de la región nor-oriental e insular de Venezuela depositadas en el herbario irbr Key to species of Ludwigia L. (Onagraceae) of the north-east and insular region of Venezuela deposited in Herbario IRBR

    OpenAIRE

    Luis José Cumana Campos

    2010-01-01

    La familia Onagraceae en Venezuela está representada por los géneros Epilobium, Fuchsia, Oenothera y Ludwigia. Este último, con el mayor número de especies (21), está distribuido desde el nivel del mar hasta la cordillera de los Andes. Para enriquecer el conocimiento del género Ludwigia en la región nor-oriental e insular, se hizo un inventario del material depositado de la familia en el herbario IRBR. Como resultado, se registran 13 especies de Ludwigia vinculadas con los medios dulceacuícol...

  6. El papel del estado en la construcción del desarrollo sostenible: el caso del turismo en el Caribe Insular.

    Directory of Open Access Journals (Sweden)

    James Cruz Johannie

    2009-12-01

    Full Text Available La discusión acerca de la pertinencia de la intervención estatal en el mercado ha sido reiterativa en la historia del pensamiento económico. El turismo es otro ejemplo de que la regulación es no sólo necesaria sino fundamental, para corregir las asimetrías de un mercado que está lejos de cumplir los supuestos que motivaron la teoría del interés individual y del beneficio social como resultado. El presente trabajo intenta enfatizar en las implicaciones de ignorar el papel del Estado en la construcción del desarrollo sostenible, haciendo especial énfasis en el turismo en el Caribe insular.

  7. Successful vectorization - reactor physics Monte Carlo code

    International Nuclear Information System (INIS)

    Most particle transport Monte Carlo codes in use today are based on the ''history-based'' algorithm, wherein one particle history at a time is simulated. Unfortunately, the ''history-based'' approach (present in all Monte Carlo codes until recent years) is inherently scalar and cannot be vectorized. In particular, the history-based algorithm cannot take advantage of vector architectures, which characterize the largest and fastest computers at the current time, vector supercomputers such as the Cray X/MP or IBM 3090/600. However, substantial progress has been made in recent years in developing and implementing a vectorized Monte Carlo algorithm. This algorithm follows portions of many particle histories at the same time and forms the basis for all successful vectorized Monte Carlo codes that are in use today. This paper describes the basic vectorized algorithm along with descriptions of several variations that have been developed by different researchers for specific applications. These applications have been mainly in the areas of neutron transport in nuclear reactor and shielding analysis and photon transport in fusion plasmas. The relative merits of the various approach schemes will be discussed and the present status of known vectorization efforts will be summarized along with available timing results, including results from the successful vectorization of 3-D general geometry, continuous energy Monte Carlo. (orig.)

  8. Pre-Surgical Integration of fMRI and DTI of the Sensorimotor System in Transcortical Resection of a High-Grade Insular Astrocytoma.

    Science.gov (United States)

    Ekstrand, Chelsea L; Mickleborough, Marla J S; Fourney, Daryl R; Gould, Layla A; Lorentz, Eric J; Ellchuk, Tasha; Borowsky, Ron W

    2016-01-01

    Herein we report on a patient with a WHO Grade III astrocytoma in the right insular region in close proximity to the internal capsule who underwent a right frontotemporal craniotomy. Total gross resection of insular gliomas remains surgically challenging based on the possibility of damage to the corticospinal tracts. However, maximizing the extent of resection has been shown to decrease future adverse outcomes. Thus, the goal of such surgeries should focus on maximizing extent of resection while minimizing possible adverse outcomes. In this case, pre-surgical planning included integration of functional magnetic resonance imaging (fMRI) and diffusion tensor imaging (DTI), to localize motor and sensory pathways. Novel fMRI tasks were individually developed for the patient to maximize both somatosensory and motor activation simultaneously in areas in close proximity to the tumor. Information obtained was used to optimize resection trajectory and extent, facilitating gross total resection of the astrocytoma. Across all three motor-sensory tasks administered, fMRI revealed an area of interest just superior and lateral to the astrocytoma. Further, DTI analyses showed displacement of the corona radiata around the superior dorsal surface of the astrocytoma, extending in the direction of the activation found using fMRI. Taking into account these results, a transcortical superior temporal gyrus surgical approach was chosen in order to avoid the area of interest identified by fMRI and DTI. Total gross resection was achieved and minor post-surgical motor and sensory deficits were temporary. This case highlights the utility of comprehensive pre-surgical planning, including fMRI and DTI, to maximize surgical outcomes on a case-by-case basis. PMID:27013996

  9. Differential Involvement of the Agranular vs Granular Insular Cortex in the Acquisition and Performance of Choice Behavior in a Rodent Gambling Task.

    Science.gov (United States)

    Pushparaj, Abhiram; Kim, Aaron S; Musiol, Martin; Zangen, Abraham; Daskalakis, Zafiris J; Zack, Martin; Winstanley, Catharine A; Le Foll, Bernard

    2015-11-01

    Substance-related and addictive disorders, in particular gambling disorder, are known to be associated with risky decision-making behavior. Several neuroimaging studies have identified the involvement of the insular cortex in decision-making under risk. However, the extent of this involvement remains unclear and the specific contributions of two distinct insular subregions, the rostral agranular (RAIC) and the caudal granular (CGIC), have yet to be examined. Animals were trained to perform a rat gambling task (rGT), in which subjects chose between four options that differed in the magnitude and probability of rewards and penalties. In order to address the roles of the RAIC and CGIC in established choice behavior, pharmacological inactivations of these two subregions via local infusions of GABA receptor agonists were performed following 30 rGT training sessions. The contribution made by the RAIC or CGIC to the acquisition of choice behavior was also determined by lesioning these areas before behavioral training. Inactivation of the RAIC, but not of the CGIC, shifted rats' preference toward options with greater reward frequency and lower punishment. Before rGT acquisition, lesions of the RAIC, but not the CGIC, likewise resulted in a higher preference for options with greater reward frequency and lower punishment, and this persisted throughout the 30 training sessions. Our results provide confirmation of the involvement of the RAIC in rGT choice behavior and suggest that the RAIC may mediate detrimental risky decision-making behavior, such as that associated with addiction and gambling disorder. PMID:25953358

  10. Pre-surgical integration of FMRI and DTI of the sensorimotor system in transcortical resection of a high-grade insular astrocytoma

    Directory of Open Access Journals (Sweden)

    Chelsea eEkstrand

    2016-03-01

    Full Text Available Herein we report on a patient with a WHO Grade III astrocytoma in the right insular region in close proximity to the internal capsule who underwent a right frontotemporal craniotomy. Total gross resection of insular gliomas remains surgically challenging based on the possibility of damage to the corticospinal tracts. However, maximizing the extent of resection has been shown to decrease future adverse outcomes. Thus, the goal of such surgeries should focus on maximizing extent of resection while minimizing possible adverse outcomes. In this case, pre-surgical planning included integration of functional magnetic resonance imaging (fMRI and diffusion tensor imaging (DTI, to localize motor and sensory pathways. Novel fMRI tasks were individually developed for the patient to maximize both somatosensory and motor activation simultaneously in areas in close proximity to the tumor. Information obtained was used to optimize resection trajectory and extent, facilitating gross total resection of the astrocytoma. Across all three motor-sensory tasks administered, fMRI revealed an area of interest just superior and lateral to the astrocytoma. Further, DTI analyses showed displacement of the corona radiata around the superior dorsal surface of the astrocytoma, extending in the direction of the activation found using fMRI. Taking into account these results, a transcortical superior temporal gyrus surgical approach was chosen in order to avoid the area of interest identified by fMRI and DTI. Total gross resection was achieved and minor post-surgical motor and sensory deficits were temporary. This case highlights the utility of comprehensive pre-surgical planning, including fMRI and DTI, to maximize surgical outcomes on a case-by-case basis.

  11. Effects of prolonged exposure to hypobaric hypoxia on oxidative stress, inflammation and gluco-insular regulation: the not-so-sweet price for good regulation.

    Directory of Open Access Journals (Sweden)

    Mario Siervo

    Full Text Available OBJECTIVES: The mechanisms by which low oxygen availability are associated with the development of insulin resistance remain obscure. We thus investigated the relationship between such gluco-insular derangements in response to sustained (hypobaric hypoxemia, and changes in biomarkers of oxidative stress, inflammation and counter-regulatory hormone responses. METHODS: After baseline testing in London (75 m, 24 subjects ascended from Kathmandu (1,300 m to Everest Base Camp (EBC;5,300 m over 13 days. Of these, 14 ascended higher, with 8 reaching the summit (8,848 m. Assessments were conducted at baseline, during ascent to EBC, and 1, 6 and 8 week(s thereafter. Changes in body weight and indices of gluco-insular control were measured (glucose, insulin, C-Peptide, homeostasis model assessment of insulin resistance [HOMA-IR] along with biomarkers of oxidative stress (4-hydroxy-2-nonenal-HNE, inflammation (Interleukin-6 [IL-6] and counter-regulatory hormones (glucagon, adrenalin, noradrenalin. In addition, peripheral oxygen saturation (SpO2 and venous blood lactate concentrations were determined. RESULTS: SpO2 fell significantly from 98.0% at sea level to 82.0% on arrival at 5,300 m. Whilst glucose levels remained stable, insulin and C-Peptide concentrations increased by >200% during the last 2 weeks. Increases in fasting insulin, HOMA-IR and glucagon correlated with increases in markers of oxidative stress (4-HNE and inflammation (IL-6. Lactate levels progressively increased during ascent and remained significantly elevated until week 8. Subjects lost on average 7.3 kg in body weight. CONCLUSIONS: Sustained hypoxemia is associated with insulin resistance, whose magnitude correlates with the degree of oxidative stress and inflammation. The role of 4-HNE and IL-6 as key players in modifying the association between sustained hypoxia and insulin resistance merits further investigation.

  12. Diversidad de micorrizas arbusculares en pasto colosuana (Bothriochloa pertusa (L A. Camus de fincas ganaderas del municipio de Corozal-Sucre

    Directory of Open Access Journals (Sweden)

    Alexander Pérez C.

    2012-08-01

    Full Text Available Objetivo. Caracterizar comunidades de hongos formadores de micorrizas arbusculares (HMA en rizosfera del pasto Colosuana (Bothriochloa pertusa (L. A. Camus en fincas ganaderas del municipio de Corozal, departamento de Sucre. Materiales y métodos. Se muestrearon 43 fincas ganaderas distribuidas en 4 zonas agroecológicas del municipio. Se realizó aislamiento de esporas del suelo, determinación del porcentaje de colonización en raíces, separación e identificación de morfotipos de HMA. Resultados. El ANOVA multifactorial mostró que el número de esporas de HMA y el porcentaje de colonización en raíces de Colosuana (Bothriochloa pertusa, fueron mayores en las fincas localizadas en la zona agroecológica 4 y 2, respectivamente. 31 morfotipos de HMA fueron aislados, un 96.9% correspondieron a morfotipos con características similares a especie dentro del género Glomus y 3.1% a Gigaspora. Conclusiones. La alta diversidad de morfotipos de HMA asociados a Colosuana se convierte en un recurso biológico alternativo, cuyo manejo, conservación y efectos sobre la productividad, genera beneficios ambientales al mejorar las condiciones físico-químicas y biológicas del suelo. Se propone su inclusión en el inventario de la diversidad de microorganismos en estos agroecosistemas.

  13. Contribuciones del Censo de Población y Viviendas 2012 al desarrollo socioeconómico del municipio Mayarí, Holguín, Cuba

    Directory of Open Access Journals (Sweden)

    Rafael Ángel Salazar Martínez

    2014-06-01

    Full Text Available El presente trabajo establece las coordenadas para la utilización eficiente de los resultados que arroje el Censo del Población y Viviendas del 2012, en función del desarrollo socioeconómico del municipio Mayarí, territorio que implementa desde ese mismo año un Programa Integral de Desarrollo Municipal (PIDM, cuya significación estratégica radica en el hecho de constituir la experiencia piloto a nivel nacional, para su generalización hacia otros municipios del país, respondiendo a los Lineamientos de la Política Económica y Social del Partido y la Revolución, en lo referente al desarrollo de proyectos locales. En este contexto, resulta de vital importancia el manejo y acceso a fuentes de información confiables y pertinentes, como las que ofrece el Censo de Población y Viviendas, que se traduzca luego en una mayor consistencia a la hora de tomar decisiones y gestionar todos los procesos que intervienen en la ejecución de este Programa.

  14. Turismo sostenible: una alternativa de desarrollo a escala humana en los municipios de Nuquí y Bahía Solano

    Directory of Open Access Journals (Sweden)

    Emigdio Pertuz

    2003-11-01

    Full Text Available En el departamento del Chocó, las comunidades locales han venido trabajando en la construcción colectiva de un modelo que les permita vivir mejor. Escogieron el ecoturismo como herramienta de conservación y uso sostenible del medio ambiente y han iniciado concertadamente la construcción de una política ecoturística nacional. La historia del desarrollo turístico en el Chocó comienza hace aproximadamente treinta años, con un producto que se perfilaba como de sol y playa, con actividades aisladas y sin ninguna planificación, atentando contra los valores naturales y culturales de la zona. Una vez declarada la ensenada de Utría como Parque Nacional Natural y aprovechando la capacitación recibida por un grupo de guías en temas ambientales, el destino se vuelca hacia el ecoturismo, y en torno a él se conforma una alianza que posteriormente da origen a la Asociación de Hoteleros Ecoturísticos de los Municipios de Nuquí y Bahía Solano. Esta entidad, las alcaldías de los dos municipios, la administración del Parque, la Fundación Natura y los Consejos Comunitarios han encaminado sus esfuerzos para el posicionamiento del turismo como motor de la economía regional.

  15. La planificación y gestión del suministro de agua potable en los municipios urbano-turísticos de Alicante

    Directory of Open Access Journals (Sweden)

    Álvaro Francisco Morote Seguido

    2015-01-01

    Full Text Available En los municipios urbano-turísticos el suministro de agua potable se convierte en uno de losservicios más importantes para el desarrollo de la actividad turística, tanto para la oferta residencial,hotelera y de ocio. El objetivo de esta investigación es conocer y analizar como las empresasgestionan y planifican el suministro de agua potable en los municipios litorales de Alicante yponer de manifiesto la implicación de estas empresas en la vertebración del territorio y la puestaen valor de un recurso tan escaso en esta provincia como es el agua. Metodológicamente se hanrealizado diferentes entrevistas a los responsables y técnicos de estas empresas para conocer deprimera mano la gestión del suministro de agua. Algunas de las conclusiones extraídas han sidola mejora en la eficiencia del suministro de agua y por tanto, un ahorro de este recurso y las buenasprácticas de gestión. También cabe indicar la labor estratégica que ejercen estas empresas conel abastecimiento a la población, especialmente en urbanizaciones que se construyeron antes dela iniciación del servicio, resolviendo problemas, tanto en cantidad como en calidad del agua.

  16. Uso actual y potencial de la flora de la ciénaga de Zapatosa, en el municipio de Chimichagua, Cesar - Colombia

    Directory of Open Access Journals (Sweden)

    Jiménez Escobar Néstor David

    2007-12-01

    Full Text Available Se realizó el primer acercamiento al conocimiento de los usos y nombres populares de las plantas útiles de
    la ciénaga de Zapatosa, en el municipio de Chimichagua (Cesar - Colombia. Se visitaron cuatro veredas, el casco urbano y tres islas ubicadas en la Ciénaga dentro del municipio. Se reportaron 252 especies de plantas vasculares, asociadas a 280 nombres populares, que fueron agrupadas en once categorías de uso, estableciéndose 370 registros, siendo Medicinales la categoría que presentó un mayor número de especies,
    seguida de Comestibles, Ornamentales, Construcción y Artesanales. Además, se determinó el origen de las
    especies registradas en alguna de las categorías de uso, siendo en total 142 de origen nativo. Se resalta la
    importancia de las especies nativas, principalmente de las ubicadas dentro de la categoría de Artesanales y Construcción, por su importancia cultural y ambiental, pues son fundamentales para la generación de planes de manejo y conservación. Entre ellas se destacan la palma estera (Astrocaryum malybo y el Banco (Gyrocarpus americana, por el grado de amenaza en la que se encuentran y por su estrecha relación con el patrimonio cultural de la región.

  17. Gobierno electrónico de la alcaldía del municipio Carirubana del estado Falcón - Venezuela

    Directory of Open Access Journals (Sweden)

    Felix Scarby

    2010-09-01

    Full Text Available El propósito de esta investigación fue determinar los factores organizacionales, tecnológicos y legales que inciden en el desarrollo del Gobierno Electrónico en la alcaldía del Municipio Carirubana, así como determinar la brecha digital existente en los ciudadanos que habitan en él proponiendo lineamientos estratégicos para desarrollar el Gobierno electrónico. La investigación es de tipo descriptivo de campo. La metodología utilizada fue dividida en fases y actividades que generaban entradas y salidas que fueron utilizadas en las actividades posteriores, concluyendo que la brecha digital existente en el uso de Internet en los ciudadanos es de 82%, y esta determinada básicamente por el nivel económico de las personas, el acceso a la tecnología y del conocimiento en el manejo de Internet, también influye el nivel educativo que presentan los ciudadanos del municipio Carirubana. Por otra parte los servicios de mayor demanda por parte del público son el pago de ejidos, trimestres y la solicitud de documentos oficiales.Palabras Clave:Gobernabilidad, Tecnologías de Información, Internet.

  18. Finanzas y gestión pública local en Colombia: el caso de la Hacienda en el municipio de Medellín

    Directory of Open Access Journals (Sweden)

    Alexander Tobón

    2012-01-01

    Full Text Available La consolidación de la descentralización fiscal en Colombia ha permitido avances significativos en la gestión financiera de los municipios, evidentes en indicadores que permiten hacer seguimiento y evaluación permanente de la administración. Este artículo presenta un análisis de las finanzas públicas de Medellín realizado a través de algunos indicadores fiscales agregados y de la estimación de dos modelos econométricos de sensibilidad para los gastos de inversión y los ingresos tributarios. Se concluye que pese a que el municipio presenta un estado fiscal saludable, con un gasto de inversión creciente, hay evidencia de la presencia de los fenómenos de pereza fiscal y de relajación en el período 1998-2009, justificados por la dependencia cada vez mayor en los ingresos no tributarios.

  19. La estructura por edad y sexo en los principales municipios y condados de la frontera entre México y Estados Unidos

    Directory of Open Access Journals (Sweden)

    Elmyra Ybáñez Zepeda

    2009-01-01

    Full Text Available La frontera entre México y Estados Unidos ha sido escenario de importantes transformaciones sociales y demográficas, teniendo como base un sostenido crecimiento de su población. En este artículo se analiza demográficamente los principales pares de municipios y condados: Tijuana- San Diego, Mexicali-Imperial, Ciudad Juárez-El Paso y Matamoros-Cameron, utilizando información de los censos de población de 1990 y 2000 de ambos países. La dinámica demográfica de las ciudades fronterizas ha dado como resultado estructuras por edad y sexo de la población que se complementan entre sí. Del lado mexicano, los municipios tienen una población más joven debido a la inmigración. Por parte de Estados Unidos, los condados muestran un porcentaje mayor de población nativa envejecida.

  20. Inventario de atractivos para el desarrollo turístico local del municipio Martí. Inventory of attractions for local tourist development of the Marti municipality.

    Directory of Open Access Journals (Sweden)

    Mabel Font Aranda

    2013-05-01

    Full Text Available El deterioro del sector agropecuario en el municipio Martí, exige la necesidad de ejecución de un grupo de proyectos de desarrollo local, que permitan revertir los procesos en el ámbito social, económico y ambiental a partir de los recursos naturales y socioculturales propios. Sobre la base anterior, se realizó el inventario de recursos/atractivos del municipio Martí como parte del diseño de productos turísticos a ofrecer  en la búsqueda de alternativas para el desarrollo local. Se registró y valoró el estado de todos los elementos que por sus cualidades naturales y/o culturales, pueden constituir una motivación para el turista, se  realizó a partir del trabajo de campo, llenado de fichas, el análisis espacio-territorial mediante el uso de métodos cartográficos, la jerarquización  y evaluación de atractivos turísticos focales, complementarios y de apoyo, fue esencial el trabajo grupal, los diferentes talleres de participación con los especialistas. Finalmente quedaron conformadas las fichas técnicas de inventario de los recursos turísticos seleccionados.

  1. Cobertura efectiva del manejo de la violencia contra mujeres en municipios Mexicanos: límites de la métrica

    Directory of Open Access Journals (Sweden)

    Diana P. Viviescas-Vargas

    2013-08-01

    Full Text Available El estudio estimó la cobertura efectiva de los servicios en salud de primer nivel de atención para el manejo de la violencia doméstica contra la mujer en tres municipios mexicanos. Se estimó la prevalencia y severidad de la violencia usando una escala validada, y la cobertura efectiva con la propuesta de Shengelia y colaboradores, con modificaciones. Se consideró atención con calidad cuando hubo sugerencia de hacer la denuncia a las autoridades. La utilización y calidad de la atención fue baja en los tres municipios analizados, siendo más frecuente la utilización cuando hubo violencia sexual o física. La cobertura efectiva en Guachochi, Jojutla y Tizimín fue de 29.41%, 16.67% y cero, respectivamente. El indicador de cobertura efectiva tiene dificultades para medir eventos y respuestas no se fundamentan en modelos biomédicos. Los hallazgos sugieren que el indicador puede ser mejorado al incorporar otras dimensiones de la calidad.

  2. Propuesta de Estrategias para la Gestión Integral de la Basura. Municipio Sucre, Estado Miranda

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    Pedro Ramírez

    2015-01-01

    Full Text Available La gestión de residuos y desechos sólidos es una tarea compleja que se ha convertido en un problema común en los países en vías de desarrollo, debido a múltiples factores, como el crecimiento demográfico, la crisis económica que ha obligado a reducir el gasto público y mantener las tarifas bajas en el servicio de aseo urbano, la debilidad institucional y la poca educación sanitaria y participación ciudadana (Jaramillo, 2000. El objetivo del trabajo fue proponer estrategias para optimizar la gestión integral de la basura en el municipio Sucre del estado Miranda. Se evaluaron aspectos físico-espaciales, distribución de la población, uso de la tierra y gestión integral actual de la basura conformada por pendientes, vialidad, distribución de la población, generación, recolección y disposición final de la basura. Los resultados sugieren que debido a las características físico espaciales del área de estudio, así como la forma como se realiza la gestión de la basura, en donde existe problemas de competencia entre el ejecutivo nacional y municipal, es importante implementar estrategias como la generadas en esta investigación dirigidas hacia el aprovechamiento y tratamiento de los residuos y desechos sólidos, la educación de la población en materia ambiental, localización de nuevas áreas como estaciones de trasferencia o rellenos sanitarios para minimizar los impactos a la salud por la acumulación de los desechos y residuos. Cabe destacar, un importante aporte a la geografía por parte de la investigación como es la regionalización o discriminización por zonas para el abordaje de la problemática.

  3. Los Pteridófitos de un bosque subandino en el municipio de Albán, Cundinamarca (Colombia

    Directory of Open Access Journals (Sweden)

    Triana Moreno Luz Amparo

    2004-12-01

    Full Text Available Se presenta el tratamiento taxonómico de los helechos y plantas afines de un bosque subandino localizado en el municipio de Albán, al occidente de Cundinamarca, entre 1.900 y 2.100 m de altitud. El área de estudio comprende una su erficie de 70 ha, de las cuales 22 corres-ponden a un relicto de bosque subandino. Allí se registran 107 especies distribuidas en
    45 géneros (38% de los géneros colombianos y 21 familias (60% de las familias del país,   resultados importantes teniendo en cuenta que el área muestreada es relativamente pequeña.  Para cada categoría taxonómica se presentan claves, descripciones y anotaciones de composición y distribución. También se presenta una guía ilustrada de las especies más frecuentes, que incluye descripciones cortas en un lenguaje sencillo para facilitar la comprensión por parte de cualquier lector; estas se acompañan de fotografías e íconos que permiten una mejor y rápida identificación. Las familias con mayor número de géneros son Polypodiaceae con siete,
    Dryopteridaceae con seis, Pteridaceae con cuatro y Cyatheaceae y Dennstaedtiaceae con tres cada una. Los géneros más diversos son Asplenium con ocho especies, Polypodium, Pteris y Elaphoglossum con siete, Blechnum, Thelypteris y Diplazium con seis, y Dennstaedtia, Hymenophyllum, Trichomanes,
    Selaginella y Huperzia con tres. De las especies encontradas Blechnum divergens, Blechnum lherminieri, Diplazium ambiguum, Elaphoglossum piloselloides, Huperzia amentacea, Hypolepis repens, Polybotrya caudata, Pteris altissima, Thelypteris grandis y Trichomanes reptans son nuevos registros para Cundinamarca. La mayoría de las especies (46% son exclusivamente terrestres y dentro de éstas las más abundantes son Asplenium flabellulatum en el bosque, Equisetum bogotense, Thelypteris rudis y Pityrogramma ebenea en el borde de las quebradas y Thelypteris rudis y Pteridium arachnoideum en los pastizales. En cuanto a las epífitas (20

  4. CARACTERIZACIÓN ESTRUCTURAL DE LA MATERIA ORGÁNICA DE TRES SUELOS PROVENIENTES DEL MUNICIPIO DE AQUITANIA BOYACÁ, COLOMBIA

    Directory of Open Access Journals (Sweden)

    Carmen S. Mosquera

    2010-09-01

    Full Text Available La materia orgánica del suelo puede variar considerablemente en su estructura, composición y conformación, de acuerdo con el origen y la edad de los materiales que la constituyen. En la presente investigación se procedió a caracterizar, mediante el empleo de la espectroscopia infrarroja y la resonancia magnética nuclear en estado sólido, dos suelos inceptisoles (I01 y I02 y un histosol (H03 destinados al cultivo de cebolla larga, en el municipio de Aquitania-Boyacá, Colombia, a dos profundidades: 0 - 10 y 40 - 50 cm. Según los espectros infrarrojos, se detectó la presencia de grupos OH (debida posiblemente a fenoles, ácidos carboxílicos o alcoholes, grupos aromáticos y alifáticos. Los espectros de 13C-RMN en estado sólido con CPMAS evidenciaron el siguiente orden respecto a la cantidad de carbonos que conforman la materia orgánica del suelo: H03-0 = 100 y H03 -40 = 88, I02-0 = 23 y I02-40 = 0, y finalmente I01-0 = 17 y I01-40 = 12, confirmándose la disminución de carbonos en la materia orgánica a través del perfil del suelo, y además se estableció que el carbón resonante en la región delta = 108-50 ppm de los espectros (N – y O-alquilos y acetales dominó en toda la MOS obtenida; le siguió el carbón aromático (delta = 168-108 ppm para los suelos I01-0 y H03-40, y el carbón alifático (delta = 0-50 ppm para los suelos I01-40, I02-0 y H03-0. Finalmente, el carbónC=O( delta= 220-162 ppm fue el menos dominante en la materia orgánica del suelo en todos los tres suelos caracterizados.

  5. Quantum Monte Carlo calculations of light nuclei

    International Nuclear Information System (INIS)

    Quantum Monte Carlo calculations using realistic two- and three-nucleon interactions are presented for nuclei with up to eight nucleons. We have computed the ground and a few excited states of all such nuclei with Greens function Monte Carlo (GFMC) and all of the experimentally known excited states using variational Monte Carlo (VMC). The GFMC calculations show that for a given Hamiltonian, the VMC calculations of excitation spectra are reliable, but the VMC ground-state energies are significantly above the exact values. We find that the Hamiltonian we are using (which was developed based on 3H, 4He, and nuclear matter calculations) underpredicts the binding energy of p-shell nuclei. However our results for excitation spectra are very good and one can see both shell-model and collective spectra resulting from fundamental many-nucleon calculations. Possible improvements in the three-nucleon potential are also be discussed

  6. Yours in Revolution: Retrofitting Carlos the Jackal

    Directory of Open Access Journals (Sweden)

    Samuel Thomas

    2013-09-01

    Full Text Available This paper explores the representation of ‘Carlos the Jackal’, the one-time ‘World’s Most Wanted Man’ and ‘International Face of Terror’ – primarily in cin-ema but also encompassing other forms of popular culture and aspects of Cold War policy-making. At the centre of the analysis is Olivier Assayas’s Carlos (2010, a transnational, five and a half hour film (first screened as a TV mini-series about the life and times of the infamous militant. Concentrating on the var-ious ways in which Assayas expresses a critical preoccupation with names and faces through complex formal composition, the project examines the play of ab-straction and embodiment that emerges from the narrativisation of terrorist vio-lence. Lastly, it seeks to engage with the hidden implications of Carlos in terms of the intertwined trajectories of formal experimentation and revolutionary politics.

  7. Monte Carlo strategies in scientific computing

    CERN Document Server

    Liu, Jun S

    2008-01-01

    This paperback edition is a reprint of the 2001 Springer edition This book provides a self-contained and up-to-date treatment of the Monte Carlo method and develops a common framework under which various Monte Carlo techniques can be "standardized" and compared Given the interdisciplinary nature of the topics and a moderate prerequisite for the reader, this book should be of interest to a broad audience of quantitative researchers such as computational biologists, computer scientists, econometricians, engineers, probabilists, and statisticians It can also be used as the textbook for a graduate-level course on Monte Carlo methods Many problems discussed in the alter chapters can be potential thesis topics for masters’ or PhD students in statistics or computer science departments Jun Liu is Professor of Statistics at Harvard University, with a courtesy Professor appointment at Harvard Biostatistics Department Professor Liu was the recipient of the 2002 COPSS Presidents' Award, the most prestigious one for sta...

  8. Quantum Monte Carlo with Variable Spins

    CERN Document Server

    Melton, Cody A; Mitas, Lubos

    2016-01-01

    We investigate the inclusion of variable spins in electronic structure quantum Monte Carlo, with a focus on diffusion Monte Carlo with Hamiltonians that include spin-orbit interactions. Following our previous introduction of fixed-phase spin-orbit diffusion Monte Carlo (FPSODMC), we thoroughly discuss the details of the method and elaborate upon its technicalities. We present a proof for an upper-bound property for complex nonlocal operators, which allows for the implementation of T-moves to ensure the variational property. We discuss the time step biases associated with our particular choice of spin representation. Applications of the method are also presented for atomic and molecular systems. We calculate the binding energies and geometry of the PbH and Sn$_2$ molecules, as well as the electron affinities of the 6$p$ row elements in close agreement with experiments.

  9. SPQR: a Monte Carlo reactor kinetics code

    International Nuclear Information System (INIS)

    The SPQR Monte Carlo code has been developed to analyze fast reactor core accident problems where conventional methods are considered inadequate. The code is based on the adiabatic approximation of the quasi-static method. This initial version contains no automatic material motion or feedback. An existing Monte Carlo code is used to calculate the shape functions and the integral quantities needed in the kinetics module. Several sample problems have been devised and analyzed. Due to the large statistical uncertainty associated with the calculation of reactivity in accident simulations, the results, especially at later times, differ greatly from deterministic methods. It was also found that in large uncoupled systems, the Monte Carlo method has difficulty in handling asymmetric perturbations

  10. CosmoPMC: Cosmology Population Monte Carlo

    CERN Document Server

    Kilbinger, Martin; Cappe, Olivier; Cardoso, Jean-Francois; Fort, Gersende; Prunet, Simon; Robert, Christian P; Wraith, Darren

    2011-01-01

    We present the public release of the Bayesian sampling algorithm for cosmology, CosmoPMC (Cosmology Population Monte Carlo). CosmoPMC explores the parameter space of various cosmological probes, and also provides a robust estimate of the Bayesian evidence. CosmoPMC is based on an adaptive importance sampling method called Population Monte Carlo (PMC). Various cosmology likelihood modules are implemented, and new modules can be added easily. The importance-sampling algorithm is written in C, and fully parallelised using the Message Passing Interface (MPI). Due to very little overhead, the wall-clock time required for sampling scales approximately with the number of CPUs. The CosmoPMC package contains post-processing and plotting programs, and in addition a Monte-Carlo Markov chain (MCMC) algorithm. The sampling engine is implemented in the library pmclib, and can be used independently. The software is available for download at http://www.cosmopmc.info.

  11. Surface-water, water-quality, and ground-water assessment of the Municipio of Comerio, Puerto Rico, 1997-99

    Science.gov (United States)

    Rodríguez-Martínez, Jesús; Gómez-Gómez, Fernando; Santiago-Rivera, Luis; Oliveras-Feliciano, M. L.

    2001-01-01

    To meet the increasing need for a safe and adequate supply of water in the municipio of Comerio, an integrated surface-water, water-quality, and ground-water assessment of the area was conducted. The major results of this study and other important hydrologic and water-quality features were compiled in a Geographic Information System, and are presented in two 1:30,000-scale map plates to facilitate interpretation and use of the diverse water-resource data. Because the supply of safe drinking water was a critical issue during recent dry periods, the surface-water assessment portion of this study focused on analysis of low-flow characteristics in local streams and rivers. Low-flow characteristics were evaluated at one continuous-record gaging station based on graphical curve-fitting techniques and log-Pearson Type III frequency curves. Estimates of low-flow characteristics for 13 partial-record stations were generated using graphical-correlation techniques. Flow-duration characteristics for the continuous- and partial-record stations were estimated using the relation curves developed for the low-flow study. Stream low-flow statistics document the general hydrology under current land- and water-use conditions. A sanitary quality survey of streams utilized 24 sampling stations to evaluate about 84 miles of stream channels with drainage to or within the municipio of Comerio. River and stream samples for fecal coliform and fecal streptococcus analyses were collected on two occasions at base-flow conditions to evaluate the sanitary quality of streams. Bacteriological analyses indicate that about 27 miles of stream reaches within the municipio of Comerio may have fecal coliform bacteria concentrations above the water-quality goal established by the Puerto Rico Environmental Quality Board (Junta de Calidad Ambiental de Puerto Rico) for inland surface waters. Sources of fecal contamination may include illegal discharge of sewage to storm-water drains, malfunction of sanitary

  12. Correspondencia epistolar de Carlos Vicioso a Carlos Pau durante su estancia en Bicorp (Valencia [Epistolary correspondece between Carlos Vicioso and Carlos Pau during a stay in Bicorp (Valencia

    Directory of Open Access Journals (Sweden)

    Pedro Pablo Ferrer Gallego

    2012-07-01

    Full Text Available RESUMEN: Se presenta y comenta un conjunto de cartas enviadas por Carlos Vicioso a Carlos Pau durante su estancia en Bicorp (Valencia entre 1914 y 1915. Las cartas se encuentran depositadas en el Archivo Histórico del Instituto Botánico de Barcelona. Esta correspondencia epistolar marca el comienzo de la relación científica entre Vicioso y Pau, basada en un primer momento en las consultas que le hace Vicioso al de Segorbe para la determinación de las especies que a través de pliegos de herbario envía desde su estancia en la localidad valenciana. En la actualidad estos pliegos testigo se encuentran conservados en diferentes herbarios oficiales nacionales y también extranjeros, fruto del envío e intercambio de material entre Vicioso y otros botánicos de la época, principalmente con Pau, Sennen y Font Quer.ABSTRACT: Epistolary correspondece between Carlos Vicioso and Carlos Pau during a stay in Bicorp (Valencia. A set of letters sent from Carlos Vicioso to Carlos Pau during a stay in Bicorp (Valencia between 1914 and 1915 are here presented and discussed. The letters are located in the Archivo Histórico del Instituto Botánico de Barcelona. This lengthy correspondence among the authors shows the beginning of their scientific relationship. At first, the correspondence was based on the consults from Vicioso to Pau for the determination of the species which were sent from Bicorp, in the herbarium sheets. Nowadays, these witness sheets are preserved in the national and international herbaria, thanks to the botanical material exchange among Vicioso and other botanist of the time, mainly with Pau, Sennen and Font Quer.

  13. Yours in revolution : retrofitting Carlos the Jackal.

    OpenAIRE

    Samuel Thomas

    2013-01-01

    This paper explores the representation of ‘Carlos the Jackal’, the one-time ‘World’s Most Wanted Man’ and ‘International Face of Terror’ – primarily in cin-ema but also encompassing other forms of popular culture and aspects of Cold War policy-making. At the centre of the analysis is Olivier Assayas’s Carlos (2010), a transnational, five and a half hour film (first screened as a TV mini-series) about the life and times of the infamous militant. Concentrating on the var-ious ways in which Assa...

  14. Geodesic Monte Carlo on Embedded Manifolds.

    Science.gov (United States)

    Byrne, Simon; Girolami, Mark

    2013-12-01

    Markov chain Monte Carlo methods explicitly defined on the manifold of probability distributions have recently been established. These methods are constructed from diffusions across the manifold and the solution of the equations describing geodesic flows in the Hamilton-Jacobi representation. This paper takes the differential geometric basis of Markov chain Monte Carlo further by considering methods to simulate from probability distributions that themselves are defined on a manifold, with common examples being classes of distributions describing directional statistics. Proposal mechanisms are developed based on the geodesic flows over the manifolds of support for the distributions, and illustrative examples are provided for the hypersphere and Stiefel manifold of orthonormal matrices. PMID:25309024

  15. Interaction picture density matrix quantum Monte Carlo

    International Nuclear Information System (INIS)

    The recently developed density matrix quantum Monte Carlo (DMQMC) algorithm stochastically samples the N-body thermal density matrix and hence provides access to exact properties of many-particle quantum systems at arbitrary temperatures. We demonstrate that moving to the interaction picture provides substantial benefits when applying DMQMC to interacting fermions. In this first study, we focus on a system of much recent interest: the uniform electron gas in the warm dense regime. The basis set incompleteness error at finite temperature is investigated and extrapolated via a simple Monte Carlo sampling procedure. Finally, we provide benchmark calculations for a four-electron system, comparing our results to previous work where possible

  16. Monte Carlo modeling of Tajoura reactor

    International Nuclear Information System (INIS)

    From neutronics point of view, reactor modeling is concerned with the determination of the reactor neutronic parameters which can be obtained through the solution of the neutron transport equation. The attractiveness of the Monte Carlo method is in its capability of handling geometrically complicated problems and due to the nature of the method a large number of particles can be tracked from birth to death before any statistically significant results can be obtained. In this paper the MCNP, a Monte Carlo code, is implemented in the modeling of the Tajoura reactor. (author)

  17. Monte Carlo dose computation for IMRT optimization*

    Science.gov (United States)

    Laub, W.; Alber, M.; Birkner, M.; Nüsslin, F.

    2000-07-01

    A method which combines the accuracy of Monte Carlo dose calculation with a finite size pencil-beam based intensity modulation optimization is presented. The pencil-beam algorithm is employed to compute the fluence element updates for a converging sequence of Monte Carlo dose distributions. The combination is shown to improve results over the pencil-beam based optimization in a lung tumour case and a head and neck case. Inhomogeneity effects like a broader penumbra and dose build-up regions can be compensated for by intensity modulation.

  18. Monte Carlo electron/photon transport

    International Nuclear Information System (INIS)

    A review of nonplasma coupled electron/photon transport using Monte Carlo method is presented. Remarks are mainly restricted to linerarized formalisms at electron energies from 1 keV to 1000 MeV. Applications involving pulse-height estimation, transport in external magnetic fields, and optical Cerenkov production are discussed to underscore the importance of this branch of computational physics. Advances in electron multigroup cross-section generation is reported, and its impact on future code development assessed. Progress toward the transformation of MCNP into a generalized neutral/charged-particle Monte Carlo code is described. 48 refs

  19. Monte Carlo simulation of neutron scattering instruments

    International Nuclear Information System (INIS)

    A library of Monte Carlo subroutines has been developed for the purpose of design of neutron scattering instruments. Using small-angle scattering as an example, the philosophy and structure of the library are described and the programs are used to compare instruments at continuous wave (CW) and long-pulse spallation source (LPSS) neutron facilities. The Monte Carlo results give a count-rate gain of a factor between 2 and 4 using time-of-flight analysis. This is comparable to scaling arguments based on the ratio of wavelength bandwidth to resolution width

  20. Monte Carlo applications to radiation shielding problems

    International Nuclear Information System (INIS)

    Monte Carlo methods are a class of computational algorithms that rely on repeated random sampling of physical and mathematical systems to compute their results. However, basic concepts of MC are both simple and straightforward and can be learned by using a personal computer. Uses of Monte Carlo methods require large amounts of random numbers, and it was their use that spurred the development of pseudorandom number generators, which were far quicker to use than the tables of random numbers which had been previously used for statistical sampling. In Monte Carlo simulation of radiation transport, the history (track) of a particle is viewed as a random sequence of free flights that end with an interaction event where the particle changes its direction of movement, loses energy and, occasionally, produces secondary particles. The Monte Carlo simulation of a given experimental arrangement (e.g., an electron beam, coming from an accelerator and impinging on a water phantom) consists of the numerical generation of random histories. To simulate these histories we need an interaction model, i.e., a set of differential cross sections (DCS) for the relevant interaction mechanisms. The DCSs determine the probability distribution functions (pdf) of the random variables that characterize a track; 1) free path between successive interaction events, 2) type of interaction taking place and 3) energy loss and angular deflection in a particular event (and initial state of emitted secondary particles, if any). Once these pdfs are known, random histories can be generated by using appropriate sampling methods. If the number of generated histories is large enough, quantitative information on the transport process may be obtained by simply averaging over the simulated histories. The Monte Carlo method yields the same information as the solution of the Boltzmann transport equation, with the same interaction model, but is easier to implement. In particular, the simulation of radiation

  1. Monte Carlo dose distributions for radiosurgery

    International Nuclear Information System (INIS)

    The precision of Radiosurgery Treatment planning systems is limited by the approximations of their algorithms and by their dosimetrical input data. This fact is especially important in small fields. However, the Monte Carlo methods is an accurate alternative as it considers every aspect of particle transport. In this work an acoustic neurinoma is studied by comparing the dose distribution of both a planning system and Monte Carlo. Relative shifts have been measured and furthermore, Dose-Volume Histograms have been calculated for target and adjacent organs at risk. (orig.)

  2. Monte Carlo simulation of granular fluids

    CERN Document Server

    Montanero, J M

    2003-01-01

    An overview of recent work on Monte Carlo simulations of a granular binary mixture is presented. The results are obtained numerically solving the Enskog equation for inelastic hard-spheres by means of an extension of the well-known direct Monte Carlo simulation (DSMC) method. The homogeneous cooling state and the stationary state reached using the Gaussian thermostat are considered. The temperature ratio, the fourth velocity moments and the velocity distribution functions are obtained for both cases. The shear viscosity characterizing the momentum transport in the thermostatted case is calculated as well. The simulation results are compared with analytical predictions showing an excellent agreement.

  3. Fast sequential Monte Carlo methods for counting and optimization

    CERN Document Server

    Rubinstein, Reuven Y; Vaisman, Radislav

    2013-01-01

    A comprehensive account of the theory and application of Monte Carlo methods Based on years of research in efficient Monte Carlo methods for estimation of rare-event probabilities, counting problems, and combinatorial optimization, Fast Sequential Monte Carlo Methods for Counting and Optimization is a complete illustration of fast sequential Monte Carlo techniques. The book provides an accessible overview of current work in the field of Monte Carlo methods, specifically sequential Monte Carlo techniques, for solving abstract counting and optimization problems. Written by authorities in the

  4. Monte Carlo methods in AB initio quantum chemistry quantum Monte Carlo for molecules

    CERN Document Server

    Lester, William A; Reynolds, PJ

    1994-01-01

    This book presents the basic theory and application of the Monte Carlo method to the electronic structure of atoms and molecules. It assumes no previous knowledge of the subject, only a knowledge of molecular quantum mechanics at the first-year graduate level. A working knowledge of traditional ab initio quantum chemistry is helpful, but not essential.Some distinguishing features of this book are: Clear exposition of the basic theory at a level to facilitate independent study. Discussion of the various versions of the theory: diffusion Monte Carlo, Green's function Monte Carlo, and release n

  5. On the use of stochastic approximation Monte Carlo for Monte Carlo integration

    KAUST Repository

    Liang, Faming

    2009-03-01

    The stochastic approximation Monte Carlo (SAMC) algorithm has recently been proposed as a dynamic optimization algorithm in the literature. In this paper, we show in theory that the samples generated by SAMC can be used for Monte Carlo integration via a dynamically weighted estimator by calling some results from the literature of nonhomogeneous Markov chains. Our numerical results indicate that SAMC can yield significant savings over conventional Monte Carlo algorithms, such as the Metropolis-Hastings algorithm, for the problems for which the energy landscape is rugged. © 2008 Elsevier B.V. All rights reserved.

  6. Use of Monte Carlo Methods in brachytherapy; Uso del metodo de Monte Carlo en braquiterapia

    Energy Technology Data Exchange (ETDEWEB)

    Granero Cabanero, D.

    2015-07-01

    The Monte Carlo method has become a fundamental tool for brachytherapy dosimetry mainly because no difficulties associated with experimental dosimetry. In brachytherapy the main handicap of experimental dosimetry is the high dose gradient near the present sources making small uncertainties in the positioning of the detectors lead to large uncertainties in the dose. This presentation will review mainly the procedure for calculating dose distributions around a fountain using the Monte Carlo method showing the difficulties inherent in these calculations. In addition we will briefly review other applications of the method of Monte Carlo in brachytherapy dosimetry, as its use in advanced calculation algorithms, calculating barriers or obtaining dose applicators around. (Author)

  7. La biomasa forestal aplicada a la obtención de energía térmica como base para el desarrollo rural de zonas desfavorecidas. Aplicación en el municipio de El Espinar, Segovia

    OpenAIRE

    Vignote Peña, Santiago; Ambrosio Torrijos, Yolanda; Lozano Piedras, Rebeca; Martín Larrañaga, Marcos; Martinez Rojas, Isaac; Leite, Angelo

    2013-01-01

    Se describe una metodologia basada en el estudio de la oferta de biomasa forestal y la demanda energética de un determinado municipio, para buscar el mejor aprovechamiento energético termico que facilite el desarrollo de una determinada región

  8. Accelerating Hasenbusch's acceleration of hybrid Monte Carlo

    International Nuclear Information System (INIS)

    Hasenbusch has proposed splitting the pseudo-fermionic action into two parts, in order to speed-up Hybrid Monte Carlo simulations of QCD. We have tested a different splitting, also using clover-improved Wilson fermions. An additional speed-up between 5 and 20% over the original proposal was achieved in production runs. (orig.)

  9. A comparison of Monte Carlo generators

    CERN Document Server

    Golan, Tomasz

    2014-01-01

    A comparison of GENIE, NEUT, NUANCE, and NuWro Monte Carlo neutrino event generators is presented using a set of four observables: protons multiplicity, total visible energy, most energetic proton momentum, and $\\pi^+$ two-dimensional energy vs cosine distribution.

  10. Scalable Domain Decomposed Monte Carlo Particle Transport

    Energy Technology Data Exchange (ETDEWEB)

    O' Brien, Matthew Joseph [Univ. of California, Davis, CA (United States)

    2013-12-05

    In this dissertation, we present the parallel algorithms necessary to run domain decomposed Monte Carlo particle transport on large numbers of processors (millions of processors). Previous algorithms were not scalable, and the parallel overhead became more computationally costly than the numerical simulation.

  11. Using CIPSI nodes in diffusion Monte Carlo

    CERN Document Server

    Caffarel, Michel; Giner, Emmanuel; Scemama, Anthony

    2016-01-01

    Several aspects of the recently proposed DMC-CIPSI approach consisting in using selected Configuration Interaction (SCI) approaches such as CIPSI (Configuration Interaction using a Perturbative Selection done Iteratively) to build accurate nodes for diffusion Monte Carlo (DMC) calculations are presented and discussed. The main ideas are illustrated with a number of calculations for diatomics molecules and for the benchmark G1 set.

  12. Coded aperture optimization using Monte Carlo simulations

    International Nuclear Information System (INIS)

    Coded apertures using Uniformly Redundant Arrays (URA) have been unsuccessfully evaluated for two-dimensional and three-dimensional imaging in Nuclear Medicine. The images reconstructed from coded projections contain artifacts and suffer from poor spatial resolution in the longitudinal direction. We introduce a Maximum-Likelihood Expectation-Maximization (MLEM) algorithm for three-dimensional coded aperture imaging which uses a projection matrix calculated by Monte Carlo simulations. The aim of the algorithm is to reduce artifacts and improve the three-dimensional spatial resolution in the reconstructed images. Firstly, we present the validation of GATE (Geant4 Application for Emission Tomography) for Monte Carlo simulations of a coded mask installed on a clinical gamma camera. The coded mask modelling was validated by comparison between experimental and simulated data in terms of energy spectra, sensitivity and spatial resolution. In the second part of the study, we use the validated model to calculate the projection matrix with Monte Carlo simulations. A three-dimensional thyroid phantom study was performed to compare the performance of the three-dimensional MLEM reconstruction with conventional correlation method. The results indicate that the artifacts are reduced and three-dimensional spatial resolution is improved with the Monte Carlo-based MLEM reconstruction.

  13. Monte Carlo methods beyond detailed balance

    NARCIS (Netherlands)

    Schram, Raoul D.; Barkema, Gerard T.

    2015-01-01

    Monte Carlo algorithms are nearly always based on the concept of detailed balance and ergodicity. In this paper we focus on algorithms that do not satisfy detailed balance. We introduce a general method for designing non-detailed balance algorithms, starting from a conventional algorithm satisfying

  14. Monte Carlo Renormalization Group: a review

    International Nuclear Information System (INIS)

    The logic and the methods of Monte Carlo Renormalization Group (MCRG) are reviewed. A status report of results for 4-dimensional lattice gauge theories derived using MCRG is presented. Existing methods for calculating the improved action are reviewed and evaluated. The Gupta-Cordery improved MCRG method is described and compared with the standard one. 71 refs., 8 figs

  15. Monte Carlo simulation of the microcanonical ensemble

    International Nuclear Information System (INIS)

    We consider simulating statistical systems with a random walk on a constant energy surface. This combines features of deterministic molecular dynamics techniques and conventional Monte Carlo simulations. For discrete systems the method can be programmed to run an order of magnitude faster than other approaches. It does not require high quality random numbers and may also be useful for nonequilibrium studies. 10 references

  16. Extending canonical Monte Carlo methods: II

    International Nuclear Information System (INIS)

    We have previously presented a methodology for extending canonical Monte Carlo methods inspired by a suitable extension of the canonical fluctuation relation C = β2(δE2) compatible with negative heat capacities, C α, as is shown in the particular case of the 2D seven-state Potts model where the exponent α = 0.14–0.18

  17. A Monte Carlo simulation of photomultiplier resolution

    International Nuclear Information System (INIS)

    A Monte Carlo simulation of dynode statistics has been used to generate multiphotoelectron distributions to compare with actual photomultiplier resolution results. In place of Poission of Polya statistics, in this novel approach, the basis for the simulation is an experimentally determined single electron response. The relevance of this method to the study of intrinsic line widths of scintillators is discussed

  18. Parallel processing Monte Carlo radiation transport codes

    International Nuclear Information System (INIS)

    Issues related to distributed-memory multiprocessing as applied to Monte Carlo radiation transport are discussed. Measurements of communication overhead are presented for the radiation transport code MCNP which employs the communication software package PVM, and average efficiency curves are provided for a homogeneous virtual machine

  19. A note on simultaneous Monte Carlo tests

    DEFF Research Database (Denmark)

    Hahn, Ute

    In this short note, Monte Carlo tests of goodness of fit for data of the form X(t), t ∈ I are considered, that reject the null hypothesis if X(t) leaves an acceptance region bounded by an upper and lower curve for some t in I. A construction of the acceptance region is proposed that complies to a...

  20. municipio de Calakmul, Campeche

    Directory of Open Access Journals (Sweden)

    Elia M. S. Chablé Can

    2007-01-01

    Full Text Available Se analizó la relación entre fuente de ingreso y gasto, asociando las decisiones que tomaron 92 mujeres campesinas de Calakmul, Campeche, sobre qué hacer con el dinero que obtuvieron de cada fuente. Se encontró que el dinero que obtuvieron las mujeres de trabajo, ventas y subsidios propios se gastó en bienes de capital, gasto de lujo y educación de los hijos en mayor proporción que el dinero proveniente de transferencias hechas por sus maridos y otros familiares, que se gastó en bienes de consumo. Esta relación nos permitió discutir la importancia de la fuente de ingreso de las mujeres y su empoderamiento.