1,721,575 research outputs found
Impact dynamic response of low damped structures subjected to impulse base accelerations
No full textShocks and impact loads are generated during the operational life of aerospace vehicles and their effects should be considered for the structural design and verification of these systems. Due to the complexity of assessing shock loads numerically, there is a lack of accurate methods to calculate the mechanical response under a shock environment. One of the existing approaches is the Response Spectrum Analysis, which directly estimates the maximum peak values of structural response accelerations generated by shocks, where it is necessary to define the input acceleration as a Shock Response Spectrum. This approach is based on the calculation of the modal contributions to the total maximum response, which can be combined in different ways, leading to a great variety of possible results
for the same response. Furthermore, the existing options generally provide inaccurate results. The objective of this paper is the development and verification of a new method for the Response Spectrum Analysis approach to calculate accurately the peak response
accelerations of undamped and low damped structures subjected to impulse base excitations characterized by a main pulse. The proposed method is verified in this paper by numerical analyses for a beam structure to demonstrate the improvement in the accuracy
of the provided results compared to the existing options
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
Formulación e implementación de prácticas educativas en organismos estatales del Gobierno Provincial, como un mecanismo de formación previa al título de grado
No full textDado nuestro carácter de docentes de la Cátedra de Tecnología de Gestión pertenecientes a la carrera de Licenciatura en Administración Pública, uno de nuestros objetivos de formación es facilitar un canal de comunicación permanente con los diferentes organismos provinciales para que los alumnos puedan efectuar prácticas educativas. Se busca lograr de ese modo experiencia
laboral previa a la obtención de su título de grado, brindándoles la posibilidad de verificar in situ, como los conocimientos teóricos se materializan en acciones administrativas concretas en las diferentes organizaciones estatales. Motiva el presente trabajo la necesidad de reflexionar sobre las dificultades que hemos observado en los alumnos de trasladar los conocimientos teóricos a las prácticas administrativas. A partir de allí, se pretende formular una propuesta de prácticas educativas pre- profesionales más ágil y acotado en el tiempo de vinculación con los diferentes organismos del Estado, que permita a nuestros alumnos realizar tareas acordes y relacionen los procesos administrativos que se ejecutan con los temas impartidos por la cátedra tales como teoría de sistemas, Ley de Administración Financiera N° 3186 y Ley de Procedimiento Administrativo N° 2938, entre otros.Fil: Alonso, Olga. Universidad Nacional del Comahue. Centro Universitario Regional Zona Atlántica; Argentina.Fil: Alonso, Gustavo. Universidad Nacional del Comahue. Centro Universitario Regional Zona Atlántica; Argentina
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
Behind the runway: Extending sustainability in luxury fashion supply chains
Full text linkFrom a resource-based view, this paper investigates sustainability integration across multiple tiers in two Italian luxury supply chains producing fashion and leather footwear, a complex and fragmented industry sector that is highly dependent upon raw materials and a human skills base. Qualitative in-depth interview data were collected from senior industry informants within 10 businesses, spanning multiple supply chain tiers. Industry practices are systematically decomposed into product, process and supply chain levels to analyse supply chain sustainability. Findings reveal that product-level practices focused on raw materials more than design initiatives, with operational benefits of cost reduction and market benefits of consumer value-add. Process-level practices in water and energy reduction were motivated by cost reduction benefits more than environmental concerns. At supply chain level, traceability projects and supplier audits were limited by a lack of end-to-end supply chain visibility, despite the criticality of raw materials and evidence of close and long-term trading relationships. Supply chain transparency and supplier engagement are critical areas for development. Both technical and relational resources must be developed across supply networks. Current practices are geared towards reducing negative impacts associated with current operations, falling short of the radical strategies needed to address root causes and embrace sustainability at large
Value Creation and Capture in Innovation Ecosystems: Strategic cooperation between E-commerce Platforms and Third-Party Logistics Providers (3PLs)
No full textDispelling 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
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