1,720,974 research outputs found
Inelastic design of load carrying members part 3; significance of inelastic analysis of eccentrically loaded members
No full textThe author has worked with others on ten investigations, sponsored by Wright Air Development Division, which have considered the theoretical and experimental inelastic analyses of eccentrically-loaded tension and compression members. In all cases good agreement was found between theory and experiment for numbers tested at room temperature and at elevated temperatures. This investigation was undertaken to consider the significance of an inelastic analysis of eccentrically-loaded members. If the inelastic deformation be considered time independent, a choice has to be made between an elastic and an inelastic solution. A study was made of the effect of several variables on the ratio of the load necessary to produce a specified inelastic deformation to the maximum elastic load. If the inelastic deformation is time dependent (creep), the only choice is an inelastic solution.Made available in DSpace on 2021-11-04T16:22:46Z (GMT). No. of bitstreams: 2
TAM180-UILU-ENG-1967-0476.pdf: 53095018 bytes, checksum: d42c1b26a985506eddbd8d68b7a6d46c (MD5)
license.txt: 4802 bytes, checksum: 58353f9dd6876860dd5221f3d7872a95 (MD5)
Previous issue date: 1960-09Wright Air Development Division, Contract No. AF 33 (616)-5658, Project No. 735
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
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
Experimental evaluation of plasticity theories for anisotropic metals
No full textAn experimental investigation was undertaken to evaluate anisotropic plasticity theories which have been proposed in the literature. Three different metals in the form of 2.5 in. diameter bars were considered: SAE 1020 steel preloaded in tension to a strain of 8 percent, copper alloy 360 (free cutting brass) preloaded in tension to a strain of 3 percent, and 2024-T351 aluminum alloy was received. All metals had approximately the same properties in the radial and circumferential directions with greatly different properties in the axial direction. Tension and compression tests were conducted on specimens having directions of axial, circumferential and 45° to the axis. Hollow torsion tests were conducted on axial specimens. Biaxial tests were conducted on thin-walled cylinders. All loading was monotonic and proportionate and extended well into the plastic region.
The various anisotropic plasticity theories were evaluated by comparing theoretical and experimental yield curves for each material and by comparing theoretical load-deformation curves with experimentally determined curves for tension and compression specimens at 45° to the axis, for hollow torsion specimens, and for biaxial loading. In most cases good agreement was found between theory and experiment.Made available in DSpace on 2021-11-04T16:24:45Z (GMT). No. of bitstreams: 2
TAM322-UILU-ENG-69-151.pdf: 2792147 bytes, checksum: 135e6f48fa35bd6bb9b71b6041ddb3bf (MD5)
license.txt: 4802 bytes, checksum: 58353f9dd6876860dd5221f3d7872a95 (MD5)
Previous issue date: 1969-0
Inelastic design of load carrying members part 4; behavior of beam columns in inelastic range
No full textTwo theories were presented for constructing either moment-load or load-deflection relations as well as the collapse loads for beam-columns. In each case, trial and error solutions were required which used constant depth of yielding interaction curves. A “so called” exact theory was presented which gave results as accurate as desired; however, the theory was not practical because of the excessive time required. An approximate theory was presented which gave results in close agreement with the exact theory and with experimental data. This theory required the elastic solution for maximum elastic conditions.
The experimental part of the investigation included tests of rectangular – and T-section columns made of 2024-T4 aluminum alloy, SAE 1020 steel, and 17-7PH stainless steel. Several slenderness ratios were considered. In addition to the variable axial load, the columns were subjected to a constant transverse load either at midspan of at quarter span which produced a bending stress of 0.25, 0.50, or 0.75 σ_e.Made available in DSpace on 2021-11-04T16:22:48Z (GMT). No. of bitstreams: 2
TAM183-UILU-ENG-1967-0479.pdf: 6934750 bytes, checksum: 85948817dfa5145dd9559eaeb674303d (MD5)
license.txt: 4802 bytes, checksum: 58353f9dd6876860dd5221f3d7872a95 (MD5)
Previous issue date: 1961-04Wright Air Development Division, Materials Central, Contract No. AF 33 (616)-7600, Project No. 735
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