555 research outputs found

    Las diferentes miradas a la noción de cultura y los efectos de la globalización cultural

    Get PDF
    El concepto “cultura” ha evolucionado a lo largo de varios siglos, así como su relación con la sociedad. Desde sus orígenes, en los primeros análisis desarrollados por las ciencias sociales (s.XIX), se hizo necesaria una reflexión e interpretación precisa del uso de este concepto dentro de los distintos ámbitos que generan conocimiento. Nuevos códigos, culturas alternativas, nuevos límites y aperturas enriquecen el panorama artístico pero, a su vez, estos modos de “ver” conllevan cierta complejidad. El cómo se cuentan las cosas está lleno de matices, de formas diferentes de narrar y generar pensamiento, cultura contemporánea participativa. La cultura no sólo se puede explicar desde parámetros distantes; también en la proximidad. Lo social es próximo y su relación con lo que acontece resulta necesario dentro de un espacio social diferenciado: las artes. The concept "culture" it has evolved along several centuries, as well as his relation with the society. From his origins, in the first analyses developed by the social sciences (s.XIX), did necessary a reflection and precise interpretation of the use of this concept inside the distinct fields that generate knowledge. New codes, alternative cultures, new limits and openings enrich the artistic panorama but to his time, these ways of "see" they comport some complexity. The how explain the things is full of nuances, of different forms to narrate and generate thought, participatory contemporary culture. The culture no only can explain from distant parameters; also in the vicinity. The social is next and his relation with what becomes results necessary inside a social space differentiated: the arts

    Terminal Pleistocene emergence of maritime interaction networks across Wallacea

    Get PDF
    The crossing of the Wallacean islands and settlement of Sahul by modern humans over 50,000 years ago, represents the earliest successful seafaring of our species anywhere in the world. Archaeological research throughout this vast island archipelago has recovered evidence for varied patterns in island occupation, with accumulating evidence suggesting a significant change in cultural activities and interaction amongst island communities following the LGM. New forms of technology such as shell fish hooks and adzes appear alongside standardised forms of shell beads, indicating that these technological innovations were accompanied by shared styles of personal ornamentation. Simultaniously, obsidian from a single, off-island source is found in the archaeological assemblages on at least four islands. We explore these implied spheres of interaction across Wallacea, with a focus on the terminal-Pleistocene/early-Holocene cultural materials and customs linking the southeastern Wallacean islands of Alor, Timor, and Kisar, and other parts of greater Wallacea and Near Oceania

    Prehistoric Human Migrations in Southeast Asia through the Lenses of Burial Practices

    Get PDF
    Burial practices commonly reflect cultural manifestations shared by a community. How deceased are interred can reflect belief systems, hygiene measures, or complex social diversification, among other factors. In modern times, these practices are highly standardized based on belief and social systems, with static rites repeated throughout time. In prehistoric times, it could be assumed that similar static systems would have been present, with the standing burial practices adopted by a community or including limited modifications. As such, similar mortuary practices in distant regions can provide evidence of migrations or cultural transmission. Extensive research carried out in Southeast Asia reveals diverse burial treatments during both synchronic and diachronic periods. Through a review of the burial practices identified in sites dated from the Late Pleistocene to the Holocene (until 3000ya) in Mainland and Island Southeast Asia, this chapter aims to address how mortuary practices can inform on prehistoric human migrations in Southeast Asia before the Austronesian dispersal. A specific case study is presented summarizing previous research in Tron Bon Lei (Alor Island, Indonesia)

    Talking Dead. New burials from Tron Bon Lei (Alor Island, Indonesia) inform on the evolution of mortuary practices from the terminal Pleistocene to the Holocene in Southeast Asia

    Get PDF
    Burial elaborations are a human behaviour that, in recent contexts can inform on social diversification, belief systems, and the introduction of new practices resulting from migration or cultural transmission. The study of mortuary practices in Mainland and Island Southeast Asia has revealed complex and diverse treatments of the deceased. This paper contributes to this topic with the description of three new burials excavated in Tron Bon Lei (Alor Island, Indonesia) dated to 7.5, 10, and 12 kya cal BP. In addition to the bioskeletal profiles and palaeohealth observations, we propose the adoption of archaeothanatological methods to characterise burial types in the region. Through the analysis of skeletal element representation, body position, articulation, and grave associations, we provide an example of a holistic approach to mortuary treatments in the Lesser Sunda Islands. Our results provide significant new data for understanding the evolution and diversification of burial practices in Southeast Asia, contributing to a growing body of literature describing prehistoric socio-cultural behaviour in this region

    Adequacy of technical and commercial alternatives applied to machine tool verification using laser tracker

    Get PDF
    Besides presenting a volumetric verification technique that allows characterization of the different geometric errors of a machine tool (MT) depending on its kinematic chain and geometry through a kinematic model, this paper investigates the influence of measurement tools and techniques available on the final accuracy of the MT. Volumetric verification based on a laser tracker (LT) relates the coordinates of the tool with the coordinates of the LT, including it into the kinematic model. Using a non-lineal optimization process, approximation functions that characterize the joint influence of MT geometric errors are obtained. However, measurement data will be affected by previous compensation of the MT, the accuracy of the measurement system, LT measurement technology, the type of retroreflector used, and techniques used to improve data accuracy, among other sources of errors. This paper studies the adequacy of different commercial alternatives such as: retroreflectors, LTs from different manufacturers, etc., that can be applied in MT verification using a long-range MT. As the accuracy is strongly affected by the uncertainty of its angular encoders, the multilateration technique tries to improve data accuracy using only LT radial information. Nonetheless, a new bundle adjustment which uses radial and angular information is presented in current metrology software. This paper studies both techniques and analyzes their adequacy for MT verification too

    Data-driven model for the assessment of mycobacterium tuberculosis transmission in evolving demographic structures

    Get PDF
    In the case of tuberculosis (TB), the capabilities of epidemic models to produce quantitatively robust forecasts are limited by multiple hindrances. Among these, understanding the complex relationship between disease epidemiology and populations’ age structure has been highlighted as one of the most relevant. TB dynamics depends on age in multiple ways, some of which are traditionally simplified in the literature. That is the case of the heterogeneities in contact intensity among different age strata that are common to all airborne diseases, but still typically neglected in the TB case. Furthermore, while demographic structures of many countries are rapidly aging, demographic dynamics are pervasively ignored when modeling TB spreading. In this work, we present a TB transmission model that incorporates country-specific demographic prospects and empirical contact data around a data-driven description of TB dynamics. Using our model, we find that the inclusion of demographic dynamics is followed by an increase in the burden levels predicted for the next decades in the areas of the world that are most hit by the disease today. Similarly, we show that considering realistic patterns of contacts among individuals in different age strata reshapes the transmission patterns reproduced by the models, a result with potential implications for the design of age-focused epidemiological interventions

    Very Low Temperature Tunnelling Spectroscopy in the heavy fermion superconductor PrOs4_4Sb12_{12}

    Full text link
    We present scanning tunnelling spectroscopy measurements on the heavy fermion superconductor PrOs4_4Sb12_{12}. Our results show that the superconducting gap opens over a large part of the Fermi surface. The deviations from isotropic BCS s-wave behavior are discussed in terms of a finite distribution of values of the superconducting gap.Comment: 4 pages, 4 figure

    In Vivo IS6110 profile changes in a Mycobacterium tuberculosis strain as determined by tracking over 14 years

    Get PDF
    Transposition and homologous recombination of IS6110 appear in Mycobacterium tuberculosis along in vivo sequential infec- tions. These events were checked in different clones of a successful strain, M. tuberculosis Zaragoza, with the focus on a variant in which integration of a copy of IS6110 in the origin of replication (oriC) region occurred

    Sexuality throughout all the stages of pregnancy: experiences of expectant mothers

    Get PDF
    Objective: To explore and understand the sexual experiences of expectant mothers during their pregnancy. Methods: The study was carried out in two healthcare centers in the Almería Health District, in southern Spain. The participants included pregnant women who received prenatal care and/or maternity education. The inclusion criteria were being pregnant, maintaining sexual activity and agreeing to participate in the study. The exclusion criteria were having limitations on sexual activity by medical prescription. The sample consisted of 15 expectant women selected using a convenience sample, of which 5 took part in a focus group (FG) and 10 in in-depth interviews (IDI). Data was collected between the months of June and December 2016. Participants were contacted by the main researcher and an appointment was made to carry out the FGs or the IDIs. Results: Three main categories emerged: False beliefs and a holistic approach to sexuality during pregnancy, which is related to the concept of sexuality, false beliefs, and limited sexual counseling during pregnancy. Limitations: From fear at the beginning to physical diffi culty at the end, referring to the fluctuations in sexual desire as well as the physical changes that limit sexual activity. Adapting to changes: safe practices and satisfaction with one’s body image, which encompasses concerns about the risks and the relationship between body image and self-esteem. Conclusion: A lack of sexual counseling during pregnancy leads to the creation of false beliefs, which, together with physical changes, concerns about the risk, and fl uctuations in sexual desire and interest, bring about a decrease in sexual activity. But sexuality remains an important aspect of pregnancy, toward which the participants must adopt a broader approach, not limited to intercourse, and adopt sexual practices that are adapted to the physical and emotional changes that happen during this time

    Analysis of mutations in streptomycin-resistant strains reveals a simple and reliable genetic marker for identification of the Mycobacterium tuberculosis Beijing genotype

    Get PDF
    The Mycobacterium tuberculosis pandemic is a major health problem, further complicated by an increasing incidence of drug-resistant isolates and the existence of highly transmissible strains, such as those in the Beijing family. Streptomycin (STR)-resistant M. tuberculosis clinical isolates have been analyzed to look for mutations in the rpsL, rrs, and gidB genes. In addition, the Rv1258c gene, which encodes Tap, an efflux pump that transports STR, has been sequenced. Mutations affecting codons 43 and 88 of the rpsL gene were found in 44.4% of the strains, and 16.7% of the strains carried mutations in the rrs gene, both of which probably contribute to STR resistance. Many strains presented with mutations in the gidB gene, but the implication of those mutations in STR resistance remains unclear. Interestingly, a cytosine nucleotide insertion between positions 580 and 581 (denominated Tap580) in the Rv1258c gene has been found in all Beijing isolates included in this study, suggesting that it might be a novel polymorphism specific to the Beijing family of M. tuberculosis. A simple and fast restriction fragment length polymorphism (RFLP)-PCR method for detecting the Tap580 insertion has been developed and used to screen a collection of 220 DNA samples obtained from cultures of M. tuberculosis isolates and 30 respiratory specimens. In all cases, the Beijing and non-Beijing representative samples were identified correctly. Tap580 is a novel polymorphism specific to the highly transmissible Beijing family, which allows for fast detection of these strains even at the very early stages of infection
    corecore