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Search Results: 1 - 10 of 35338 matches for " Hernández Llosas "
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Patrimonio cultural y desarrollo sostenible en la quebrada de Humahuaca: Potencial y perspectivas
Hernández Llosas,María Isabel;
Cuadernos de la Facultad de Humanidades y Ciencias Sociales. Universidad Nacional de Jujuy , 2002,
Abstract: this paper presents an assessment of the potential of quebrada de humahuaca regarding its rich natural and cultural heritage. this assessment focus on the opportunity they offer to be managed in a way that would allow its preservation together with the implementation of programs for regional sustainable development. to do this, several items are taken into account and analyzed, such as geomorphologic, geographical, environmental, archaeological, historical and anthropological aspects of the region. this is then taken together with an evaluation of different concepts to be used in the assessment process. finally a proposal is presented for the specific case of the quebrada de humahuaca, stressing its long history of human occupation, covering more than 10.000 years, showing a close and changing relationship between human societies and a specific environment, which is impressive in terms of its natural beauty. this history of human occupation including the present day relationship between human societies and this particular environment can be described as "continuing cultural landscape" according with the unesco classification.
MORE THAN THE MOTIFS: THE ARCHAEOLOGICAL ANALYSIS OF ROCK ART IN ARID REGIONS OF THE SOUTHERN HEMISPHERE
Ross,June; Valenzuela R,Daniela; Hernández Llosas,María Isabel; Briones,Luis; Santoro,Calogero M;
Chungará (Arica) , 2008, DOI: 10.4067/S0717-73562008000300005
Abstract: three regional rock art studies undertaken in the southern hemisphere (northwest central queensland in australia, lluta valley in northern chile and quebrada de humahuaca in northwest argentina) are analysed. based on the relationships between rock art and other aspects of the physical, social and chronological context of its production, we show the articulation between the production of rock art and past social strategies. the three examples demónstrate many consistencies in the way rock art has been utilised in arid environments while also identifying regionally distinct variations in technique and function. in each of the arid regions, competition aróse for limited and valued resources. in each example, the production of rock art was used as a powerful tool to negotiate newly arising circumstances in order to ensure predictable and desirable economic and social outcomes for the artists' group. the methods and form used to achieve these outcomes varied in each case study, because of the availability of materials for art production, the topography and environmental conditions in each specific área, particular cultural preferences and the ways in which people utilised art. in northwest central queensland the rock art assemblage was employed for the negotiation of group identity at several levéis. in the lluta valley, the geoglyphs embody social, political and economical aspirations, being produced as a means of legitimating the access of lama caravans to the coast and its resources. in the quebrada de humahuaca increased competition for resources led to the production of different rock art assemblages; the herders produced panels that played roles such as marking grazing territories, commemorating past events and most significantly, as part of the ritual life of the herders.
MORE THAN THE MOTIFS: THE ARCHAEOLOGICAL ANALYSIS OF ROCK ART IN ARID REGIONS OF THE SOUTHERN HEMISPHERE MáS QUE MOTIVOS: EL ANáLISIS ARQUEOLóGICO DEL ARTE RUPESTRE EN REGIONES áRIDAS DEL HEMISFERIO SUR
June Ross,Daniela Valenzuela R,María Isabel Hernández Llosas,Luis Briones
Chungará (Arica) - Revista de Antropología Chilena , 2008,
Abstract: Three regional rock art studies undertaken in the southern hemisphere (northwest central Queensland in Australia, Lluta Valley in northern Chile and Quebrada de Humahuaca in Northwest Argentina) are analysed. Based on the relationships between rock art and other aspects of the physical, social and chronological context of its production, we show the articulation between the production of rock art and past social strategies. The three examples demónstrate many consistencies in the way rock art has been utilised in arid environments while also identifying regionally distinct variations in technique and function. In each of the arid regions, competition aróse for limited and valued resources. In each example, the production of rock art was used as a powerful tool to negotiate newly arising circumstances in order to ensure predictable and desirable economic and social outcomes for the artists' group. The methods and form used to achieve these outcomes varied in each case study, because of the availability of materials for art production, the topography and environmental conditions in each specific área, particular cultural preferences and the ways in which people utilised art. In northwest central Queensland the rock art assemblage was employed for the negotiation of group identity at several levéis. In the Lluta Valley, the geoglyphs embody social, political and economical aspirations, being produced as a means of legitimating the access of lama caravans to the coast and its resources. In the Quebrada de Humahuaca increased competition for resources led to the production of different rock art assemblages; the herders produced panels that played roles such as marking grazing territories, commemorating past events and most significantly, as part of the ritual life of the herders. Se presentan tres estudios regionales en ambientes áridos del hemisferio sur: centro noroeste de Queensland en Australia, valle de Lluta en el norte de Chile y Quebrada de Humahuaca en el Noroeste Argentino. A partir del análisis de los vínculos contextúales entre el arte rupestre y aspectos físicos, sociales y cronológicos de su producción, se explican los modos en que la producción del arte se articula con diferentes estrategias sociales. Aunque los casos de estudio revelan consistencias en el empleo del arte rupestre en ambientes áridos, asimismo exhiben variaciones regionales en técnica y función. En cada una de las regiones desérticas estudiadas, las condiciones ambientales restrictivas y la competencia por recursos fue un factor influyente en la producción del arte. Los artífic
Thermal Flows in the Surface Atmosphere of the Riobamba City  [PDF]
Arquímides Haro, Cecilia Limaico, Yolanda Llosas
Atmospheric and Climate Sciences (ACS) , 2014, DOI: 10.4236/acs.2014.44061
Abstract: This study evaluated the behavior of surface heat fluxes, in the meteorological and physical conditions of the Riobamba city (height of 2754 m regarding the sea level, geographical position 1°58'58'' Sour of latitude and 78°39'33'' West of longitude, and it is located in the Ecuadorian inter-Andean alley), these meteorological data were monitored at the ESPOCH stations of the alternative energy group during 2010-2012, and applied information processing dynamic model formulated by Van Ulden and Hostlag, which allows the determination of heat flow of sensible heat, latent heat and surface heat generated in the interaction soil-air. The measures allow us to know the average behavior of the heat flow data with variation between, 38.22, 22.15 and 155.20 W/m2 for the latent, sensible and surface heat respectively, while during the day hours significant variations in these flows that reach maximum values during the day with 139, 127 and 763 W/m2 and minimum at the night -3.9, -27.5 and -263.3 W/m2; results differ from those obtained under normal conditions at sea level.
Characterization of the Atmospheric Dynamics in Riobamba City Using the Chaos Theory  [PDF]
Arquímides Haro, Cecilia Limaico, Yolanda Llosas
Atmospheric and Climate Sciences (ACS) , 2015, DOI: 10.4236/acs.2015.54036
Abstract: Chaos studies all that is messy, disorganized and incoherent; mathematically the chaos is a dynamic system governed by nonlinear differential equations. Chaos has an unpredictable behavior; its dynamical is very sensitive to the initial conditions. Atypical chaotic system is the atmosphere; this limits the knowledge about its behavior; but with the advance in the computers, the results that are obtained with the chaos theory improved significantly; the description of atmosphera and its results have extended to other fields of the science, as the economy, health and others. The object of this work was to determine the atmospheric dynamics in the Riobamba city using the theory of chaos, with meteorological data of the meteorological station of the ESPOCH of one year (2010) of data that were processed with model TISEAN. The results determine a hyperchaotic system, according to the coefficients of Lyapunov.
Translation and Reception of The Wealth of Nations by Spanish and Latin American Authors during Eighteenth and Nineteenth Centuries  [PDF]
Paz Molero Hernández
Open Journal of Social Sciences (JSS) , 2015, DOI: 10.4236/jss.2015.35008
Abstract: The objective of this paper is not the complete work, but namely to analyze the reasons for which in Spain and Latin America The Wealth of Nations, was censored in the eighteenth and nineteenth centuries and to analyze in turn whether the reasons for this censorship correspond to the ideas that Adam Smith effectively defended. It is not intended to judge the intention of any of the parties involved in this process but to understand the context in which they occurred, and to judge whether people in Spanish-speaking countries during those centuries knew what Adam Smith actually wanted to express.
On the Asymptotics of Stochastic Restrictions  [PDF]
José A. Hernández
Theoretical Economics Letters (TEL) , 2016, DOI: 10.4236/tel.2016.64075
Abstract: This paper investigates inference methods to introduce prior information in econometric modelling through stochastic restrictions. The goal is to show that stochastic restrictions method estimator can be asymptotically more efficient than the estimator ignoring prior information and can achieve efficiency if prior information grows faster than the sample information in the asymptotics. The set up includes the nonlinear least squares and indirect inference estimators. The paper proposes a new indirect inference estimator that incorporates stochastic equality constraints on the parameters of interest. Finally, the proposed approach is applied to a macroeconomics model where high efficiency gains are shown.
The Development of the Renewable Energy Technologies in Spain  [PDF]
Félix Hernández, Miguel Hernández-Campos
Smart Grid and Renewable Energy (SGRE) , 2011, DOI: 10.4236/sgre.2011.22013
Abstract: This article examines the development of the four main renewable energy technologies (RET) in Spain in the latest years: biomass, small hydro (SH), solar photovoltaic (solar PV) and wind. It has been studied the variation of the work-ing time per MW installed available from the on line data base of Spanish National Commission on Energy (SNCE), in the national context and in each of the Autonomic Communities (AACC). We have also obtained the marginal cost curve of the global RE. The main conclusions of the study are that Spain is effective meeting the RE generation target but not efficient in costs and in short term it is not any RETs that can achieve competitive price comparing to the elec-trical market.
Análisis exploratorio espacial de los accidentes de tránsito en Ciudad Juárez, México
Hernández Hernández,Vladimir;
Revista Panamericana de Salud Pública , 2012, DOI: 10.1590/S1020-49892012000500007
Abstract: objective: prepare a tool for the exploratory study of road accidents in ciudad juarez, chihuahua, mexico, that exclusively applies the spatial geographical variable (location). methods: observational and cross-sectional study that uses a geographic information system to explore the spatial nature of 13 305 road accidents recorded during 2008 and 2009 in ciudad juarez. indicators were constructed that approximated the transit flow and included two variables: indices of the level of urbanization and population density. results: the value of the global spatial autocorrelation was positive, indicating the presence of groupings that were identified through the spatial association indicators. there are road risk clusters located in areas with a high level of urbanization, low population density, and a high transit flow level. conclusions: the exploratory analysis of spatial data is a phase that precedes the use of multivariate techniques with a broader scope. the application of exploratory analysis techniques in itself makes it possible to standardize spatial groupings, identify global autocorrelation, and indicate the direction of the variables under study.
Polineuropatía desmielinizante inflamatoria crónica: Aspectos clínicos y electrofisiológicos
Hernández Hernández,Aymeé;
Acta Neurológica Colombiana , 2012,
Abstract: chronic demyelinating inflammatory polineuropathy (cidp) is a kind of peripheral neuropathy predominantly motor of autoimmune cause and chronic course. its start insidiously, it can affect both sex, more frequent male. it can appear in any time of life more frequent in second decade. it is very important differentiate of other illness because it has good response to inmunosupresor agents. diagnosis is support ed in four aspects: clinical, electrodiagnostic studies, brain spinal fluid study and anatomo-pathologycal issues. diagnosis is polemic and controversial, with different diagnosis criteria, because they not include atypical variants. we have to review ed this topic, and show clinical, electrophysiological, fisiopathological and pathological aspects and also our experience in the study of cidp patients throw twelve years in la habana, cuba.
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