1,721,260 research outputs found
Ni subtilités, ni empirisme
No full textHarris Nigel. Ni subtilités, ni empirisme. In: Espaces Temps, 36, 1987. Tiers-Monde : faim de théorie, sous la direction de Jean-Louis Margolin. pp. 17-18
On the role of longitudinal string vibrations in the generation of violin sound
No full textEThOS - Electronic Theses Online ServiceGBUnited Kingdo
Using risk analysis to determine the potential range of lifecycle costs for urban transit systems
No full textIntense competition for limited public funding for urban transport projects can often result in proponents of individual schemes presenting minimized costs and maximized benefits to funding bodies to try to ensure that their scheme is chosen above others for funding. This presents public bodies with a problem, especially in an era when they are keen to attract private contributions for transit schemes. Risk modelling techniques can be of great assistance in ascertaining ranges of costs and benefits for individual submissions and deciding upon which projects should receive priority-not only those with greatest cost-benefit indices, but also those whose indices have low levels of associated risk to allay the fears of the traditionally risk averse private sector
Li and ?7Li in Himalayan rivers: Proxies for silicate weathering?
No full textThis paper presents the first systematic survey of lithium and its isotopes in the dissolved load and suspended and bed sediments of tributaries of the Ganges, both before and after the monsoon. Locations were chosen in order to cover catchments draining both silicates and carbonates, at high (2000–4000 m) and low (550–1300 m) altitudes. Modelling of the dissolved composition shows that the Li / Ca ratio of the silicate endmember in Himalayan rivers is at least an order-of-magnitude higher than that of the carbonate endmember. Most of the dissolved Li (> 90%) is derived from silicates even in carbonate-dominated catchments. While the Sr-isotope composition of the dissolved load reflects that of the bedrock, the main control on its Li-isotope composition is fractionation during weathering. Fractionation between the dissolved and suspended load in silicate-dominated catchments is greatest at high altitude and lower at low altitude where weathering is more intense. Tributaries draining silicates have lower dissolved ?7Li values (by 2.3‰ to 4.2‰) following the monsoon when weathering is more intense because of higher runoff and elevated temperatures. Our data suggest that riverine Li fluxes largely reflect silicate weathering rates, while riverine ?7Li varies with weathering intensity. As rivers presently contribute ?50% of the Li input to the oceans, seawater Li concentrations and ?7Li show potential as proxies for global silicate weathering processes
Effective professional fundraising leadership
No full textWhile experts identify leadership as a key ingredient for success in fundraising, the question of what specific leadership characteristics and approaches are most relevant to fundraising remains unanswered. There has been little examination of what, if any, different characteristics and approaches may exist for successful volunteer leaders and professional leaders in fundraising
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Isotope studies reveal a complete Himalayan section in the Nanga Parbat syntaxis
No full textMany models of orogenesis invoke simple anatomies for mountain belts, comprising a small number of major tectonic provinces separated by major faults. In the Himalayan arc, three main tectonic provinces (the Lesser Himalayan, High Himalayan and Tethyan Series) have been recognized over 2500 km along strike from Bhutan to Kashmir. However, their extension westward to the Nanga Parbat syntaxis remains equivocal. We have supplemented detailed field work in the area with isotopic analysis aimed at revealing distinct signatures for each of the three main provinces. Using Sr isotopic data to refine previous Nd-based discrimination, we demonstrate that the three main tectonic provinces of the central Himalaya also occur in the western syntaxis of northern Pakistan. These three units are thus continuous along the entire orogenic arc. However, their metamorphic grade is generally higher in the syntaxis than in the central Himalaya, challenging the validity of distinctions commonly drawn on this basis elsewhere in the mountain belt. The corollary is that these high-grade units probably continue beyond the syntaxis into northwestern Pakistan, which suggests that, although the precollisional materials may be identical, the western syntaxis marks a change in tectonic style from the main orogen. This conclusion in turn requires that the burial and exhumation history in the western Himalaya be radically different from that in the central Himalaya and thus necessitates a reexamination of models for India-Asia collision
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