3,612 research outputs found

    Kallawaya, S.A. - la creación de los Kallawaya (1532-2008) : Un acercamiento histórico, relacional y comparativo

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    The Kallawaya are a Bolivian ethnic group well known for ritualism and naturopathy. This paper explores the ‘making’ of the Kallawaya as a polity emerging, modifying, and adapting over time according to its political and economic needs, at the intersection of local conditions and of global developments. The case of the Kallawaya shows how processes of ethnicization unfold through the interplay of primordialist and of instrumentalist logics. An important vehicle for ethnicization is resilience as expressed by the cultural memory.Los Kallawaya son un grupo étnico que se hizo famoso por su ritualismo y su naturopatía. Este artículo explora el desarrollo de los Kallawaya como una entidad política que, a lo largo del tiempo, se formaba, se modificaba y se adaptaba conforme a sus necesidades políticas y economicas y en la intersección de condiciones locales y de desarrollos globales. El caso de los Kallawaya muestra como los procesos de etnicización se despliegan mediante la interacción de lógicas primordialistas e instrumentalistas. Un importante vehículo para la etnicización es la resiliencia manifestándose en la memoria cultural

    The Geography of Knowledge Spillovers between High-Technology Firms in Europe - Evidence from a Spatial Interaction Modelling Perspective

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    The focus in this paper is on knowledge spillovers between high-technology firms in Europe, as captured by patent citations. High-technology is defined to include the ISIC-sectors aerospace (ISIC 3845), electronics-telecommunication (ISIC 3832), computers and office equipment (ISIC 3825), and pharmaceuticals (ISIC 3522). The European coverage is given by patent applications at the European Patent Office that are assigned to high-technology firms located in the EU-25 member states, the two accession countries Bulgaria and Romania, and Norway and Switzerland. By following the paper trail left by citations between these high-technology patents we adopt a Poisson spatial interaction modelling perspective to identify and measure spatial separation effects to interregional knowledge spillovers. In doing so we control for technological proximity between the regions, as geographical distance could be just proxying for technological proximity. The study produces prima facie evidence that geography matters. First, geographical distance has a significant impact on knowledge spillovers, and this effect is substantial. Second, national border effects are important and dominate geographical distance effects. Knowledge flows within European countries more easily than across. Not only geography, but also technological proximity matters. Interregional knowledge flows are industry specific and occur most often between regions located close to each other in technological space.

    Interrelationship of diet fibre and endoxylanase with bacteria in the chicken gut

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    Four trials were conducted to assess the influence of non-starch polysaccharides (NSP) from dietary corn (C), wheat (W) and wheat supplemented with endoxylanase (E) on performance, the gastrointestinal tract and on the bacterial population and its fermentation characteristics in broiler chickens. Trial one determined the difference in GIT size, specific culturable intestinal bacteria numbers, and volatile fatty acid (VFA) production at 42 d between C, W and wheat diets supplemented with E either throughout the 42 d or for 0-28 d or 29-42 d. The second trial utilized the same wheat treatments as the first trial, but GIT and VFA measures were taken at 14, 28 and 42 d while bacterial enumeration was only done at 28 and 42 d. This experiment was analyzed as a two-way analysis of variance with age and treatment effects. A third trial evaluated the C, W and E diets for differences in the amounts of total aerobic and anaerobic bacteria cultured at 28 and 42 d. The fourth trial was a two-way analysis of variance evaluating the effect of age and diet (C, W and E) on performance, GIT size, VFA production and residual NSP in the terminal ileum at 7, 14, 21, 28, 35 and 42 d. Performance was measured in all four trials and digesta viscosity was measured in all but the third trial. Results from the first trial showed that E supplementation of wheat diets improved performance. Viscosity was lowest for C diets. Measures of GIT size were all smaller on C versus wheat-based diets. Ileal anaerobes tended to be higher with E than without while caecal anaerobes were higher on unsupplemented wheat diets. VFA production was higher for wheat versus corn fed birds in the ileum. C diets and wheat diets where E was removed at 28 d yielded the highest caecal propionic acid levels. In the second trial, performance was also improved with E supplementation. Viscosity was lower for E supplemented wheat-fed birds than unsupplemented birds, except at 42 d. Full ileal weights were higher for W diets versus all others while caecal weights were lower on this diet. Bacterial data indicated higher levels of ileal anaerobes and some caecal anaerobes on W diets at 28 and 42 d. VFA content of the digesta, at 28 d was higher in the ileum in diets without E and the same tendency was noted for caecal VFA. At 42 d ileal VFA production was higher with E and caecal VFA production was higher without E. The results from the first two trials demonstrate that while certain anaerobic bacteria do increase in the ileum of W diets, others appear to respond to the substrates created by E supplementation in both the ileum and the caecum. Age related adaptation also appears to affect the response of the bacteria to E supplementation. In the third experiment C and E birds performed equally well with W birds having the highest gain to feed ratios after 14 d and overall. E diets resulted in the highest numbers of caecal anaerobes with C birds having the lowest number. At 42 d, birds had higher numbers of caecal anaerobes than at 28 d. At 28 d, caecal aerobes were highest on E diets (

    Exploring the Effects of Unequal and Secretive Pay

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    We experimentally test whether intentional and observable discriminatory pay of symmetric agents in the Winter (2004) game causes low paid agents to reduce effiort. We control for intentionality of wages by either allowing a principal to determine wages or by implementing a random process. Our main observations are that discrimination has no negative effiect on effiorts and principals do not shy away from using discriminatory pay if it is observable. Rather, with experience discrimination enhances efficiency as it facilitates coordination among agents. The only evidence for reciprocity is that subjects receiving a low payment from a principal (discriminatory or not) exert signiï¬cantly less effort

    Intra- and Interspecific Variation in Tadpole Lateral Line Cells

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    Background The lateral line is a sensory system that detects motion and pressure in fish & larval amphibians. The sensory end organs are called neuromasts. A gosner stage describes the 46 stages of tadpole development Hypothesis: We hypothesize that the number of neuromasts will vary more between species than within a species

    Effects of person-environment fit of gender-role orientation on burnout, engagement and hair steroids as stress biomarkers among women

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    Background: Analysis on gender related differences in occupational stress and burnout levels usually reveal higher occupational stress and burnout levels for women compared to men, especially in male-dominated working environments. In opposition to group differentiation, more specific gender-related dimensions feminity and masculinity were used in the study to describe individual and work environment characteristics and analyze their effects. Methods: In a cross-sectional design, survey results were linked to steroid levels in hair samples. Data was collected in a German medical services company with 146 employed women age 22-66 years (M = 40.48, SD = 10.38), 58 of them provided hair samples for steroid detection. Feminity and masculinity were measured by Gender Role Orientation Scale GTS+. Two Person-Environment fit scores in feminity and masculinity were calculated by subtracting individual from environment values. Both fit scores were proved as predictors in hierarchical linear regression models predicting burnout and work engagement as well as hair steroids cortisol, cortisone, DHEA, testosterone and progesterone detected by Liquid Chromatography-Mass Spectrometry (LC-MS/MS) as stress biomarkers. Bivariate correlations as well as moderator and mediator analysis were implemented. Results: After considering age, role clarity, and work organization, Person-Environment fit in feminity still added significant variance explanation (beta = .23, increment R-2 = .05, p = .003) for burnout. Person-Environment fit in feminity also explained poor variance in work engagement (beta = -.29, R-2 = .09, p < .001). Person-Environment fit in masculinity added considerable variance explanation (beta = .34, increment R-2 = .12, p = 0.018) to cortisol levels after including quantitative demands to the model. Conclusions: Person-Environment fit in feminity might be inspected as a predictor for burnout and work engagement. Person-Environment fit in masculinity can be taken into consideration as a predictor for hair cortisol as stress biomarker. Feminity and masculinity can be used as personality traits as well as characteristics of work environment, thus providing a particular gender-role related method of differentiation within gender groups. Also, specific methods could be derived for stress and burnout prevention and promotion of work engagement. Representative population studies with bigger samples and longitudinal surveys are needed to better explore the benefits and limitations of this approach

    Behavioral Plasticity in Response to Environmental Cues in Poison Frog Tadpoles

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    Behavioral plasticity is the ability of an organism to detect cues in their environment and respond by modifying behavior. In the wild, dyeing poison frog (Dendrobates tinctorius) tadpoles are delivered by their dads to pools that vary in predation risk, resource availability, con-and hetero-specific density. Conspecific density is especially important as these tadpoles are aggressive and often cannibalistic. Behavioral plasticity in response to environmental cues may help tadpoles to compete for resources and survival

    Audio-visuelle Tendenzen

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    AUDIO-VISUELLE TENDENZEN Entwicklungen in der Visualisierung elektronischer Musik und in der Clubkultur In dieser Diplomarbeit werden audio-visuelle Tendenzen und deren Entwicklung im Laufe der letzten einhundert Jahre, mit einem speziellen Blick auf die zeitgenössische Kunst des VJings diskutiert. Das erste Kapitel “Entwicklungen einer (Club)Kultur” versucht, die Parallelen in der Entwicklung der elektronischen Musik und deren Visualisierung aufzuzeigen. Warum scheint das VJing am besten gemeinsam mit Techno zu funktionieren? Welche speziellen Beschaffenheiten machen den Club zur wichtigsten Bühne für VJs und DJs, für Audio-Live-Acts und Live Cinema Performer? Im zweiten Kapitel „Die neue Audio-Vision“ wird durch den Rückblick auf spezifische künstlerische Strömungen wie den Absoluten Film, Expanded Cinema, den Strukturellen Film, Light Shows oder die Appropriation Art analysiert, wie und woraus sich das VJing und die Visualisierung elektronischer Musik entwickelt haben und inwieweit man zeitgenössische künstlerische Strategien auf historische Ausformungen zurückführen kann. Die RE:MIX Kondition ermöglicht es, aus einem unendlichen Fundus aus visuellem und auditiven Material zu schöpfen. Welches sind die künstlerischen, formalen und inhaltlichen Strategien der VJs und Live Cinema Performers? Wie improvisiert ein VJ zur Musik? Welche Rolle nimmt das Publikum ein?AUDIO-VISUAL TENDENCIES Evolutions in the art of VJing and in club culture This essay discusses audio-visual tendencies and their evolution during the last one hundred years of art history with a special focus on the contemporary art of VJing. The first chapter „Evolution of a (Club)culture“ tries to point out the parrallels in evolution of electronic music and its visualisation. Why does VJing seem to work best together with Techno? What special conditions distinguish the Club as the most important stage for DJs and VJs, Audio Live Acts and Live Cinema performances? In the second chapter „The new Audio-Vision“ a review on specific artistic movements like Absolute Film, Expanded Cinema, Structual Film, Light Shows and Appropriation Art tries to analyse how VJing and the visualisation of electronic music evolved and how much we can base contemporary artistic strategies upon the influence of their antecessors. The RE:MIX condition approves that infinite funds of visual and auditive material can be used and be remixed. What are the artistic and formal strategies of VJs or Live Cinema Performers? How do VJs improvise to the music? What role takes the public
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