1,720,957 research outputs found
Structural damage by tsunamis
No full textThis paper presents a brief discussion of structural damage by tsunamis based primarily on damage produced by recent tsunamis along the northern California coast. Of these recent tsunamis, by far the most damaging was the one of March 1964; which caused approximately 300,000 damage at other coastal locations, and about $200,000 damage in San Francisco Bay. At Crescent City, where the maximum runup reached about 21 feet above mean lower low water, damage was largely to wood frame structures of relatively light construction and to floating vessels. At other locations, damage was primarily to commercial fishing and pleasure vessels and associated shoreside structures. Acknowledgement i s gratefully made to the Corps of Engineers for access and permission to use data on file in the San Francisco District, U.S. Army Corps of Engineers and the many other agencies and Individuals that gave their observations, records or photography for the writer
Design and Construction of Rubble Mound Structures: An Introduction
No full textThe design and construction of structures for the coast lines of the world must consider numerous forces and factors. These include the purpose of the structure, the design waves, the design wave climate, the material of which the structure is to be built, foundation conditions, earthquakes, tsunamis, availability of construction and maintenance equipment, availability of funds for maintenance, availability of laboratory and oceanic equipment and vessels, etc. The focus of this lecture today however, will primarily include conceptual and practical factors, including those considered in the Hudson formula for design of rubble mound structures against waves. Firstly, perhaps the most difficult question that must be answered in general coastal design is: What are the forces acting on the structure? The following subjects will be discussed: - General Concepts - Case Histories - Nested Units In conclusion, I believe that with good coastal engineering, economical rubble mound structures can be designed, built, and maintained in exposed coastal locations. However, each site must be considered individually, and additionally, research must be undertaken to fully quantify loadings, stresses and design of concrete armor units to provide stable designs with appropriate safety factors.ICCE 199
Current Challenges in Coastal Management in the Netherlands: Examples of Pilot Projects
No full textA need for upscaling of sand nourishments to guarantee sustainable conditions for safety against flooding and preservation of coastal functions, combined with the need to enhance an integrated coastal zone management in the Netherlands, has initiated a number of pilot experiments. The management background and the approach leading to the pilots are illustrated. Central to the approach is a connection between large scale requirements and small scale needs, applying a concept of Building-with-Nature. The three pilots illustrate different applications; two for mega-scale nourishments and one for sand mining. Monitoring of the pilots must reveal the effectiveness of the designs; evaluation of the approach to connect large- and small scales, must indicate its wider applicability
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe 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
Get PDF“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
Get PDFWe 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
Get PDFWe 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
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