1,720,955 research outputs found
Evaluating the adequacy of installed ventilation systems in high rise buildings in Nairobi, Kenya
No full textSustainable passive ventilation has been promoted as the way forward in ventilation systems in Sub-Saharan Africa. Whether this is real or factual will be determined by this investigation on how well installed ventilation systems meet the comfort needs of office building occupants. The study gave an indication of the priorities that were attached to climatic suitability of ventilation designs in high rise office buildings. The study investigates the use of both mechanical and natural ventilation systems in some high rise office buildings. It provides information on one hand, on the level of adoption of ventilation systems in office buildings located in the Central Business District (CBD) in Nairobi, Kenya, and on the other hand, the adequacy of the installed ventilation systems as perceived by the building occupants. 34 tenants of high rise buildings located in the CBD area were purposively sampled and were the units of the study analysis. Analysis of their responses was presented using simple descriptive and interpretative techniques. The study finds that installed ventilation systems were inadequate and rarely meet tenants' needs in high rise buildings. Occupants require greater flexibility in ventilation design and desire ventilation systems that could incorporate some measure of individual control of air circulation to enhance their general comfort
Evaluating the adequacy of installed ventilation systems in high rise buildings in Nairobi, Kenya
No full textSustainable passive ventilation has been promoted as the way forward in ventilation systems in Sub-Saharan Africa. Whether this is real or factual will be determined by this investigation on how well installed ventilation systems meet the comfort needs of office building occupants. The study gave an indication of the priorities that were attached to climatic suitability of ventilation designs in high rise office buildings. The study investigates the use of both mechanical and natural ventilation systems in some high rise office buildings. It provides information on one hand, on the level of adoption of ventilation systems in office buildings located in the Central Business District (CBD) in Nairobi, Kenya, and on the other hand, the adequacy of the installed ventilation systems as perceived by the building occupants. 34 tenants of high rise buildings located in the CBD area were purposively sampled and were the units of the study analysis. Analysis of their responses was presented using simple descriptive and interpretative techniques. The study finds that installed ventilation systems were inadequate and rarely meet tenants' needs in high rise buildings. Occupants require greater flexibility in ventilation design and desire ventilation systems that could incorporate some measure of individual control of air circulation to enhance their general comfort
Adequacy of ventilations systems: Perspectives of designers and occupants of office buildings in Nairobi, Kenya
No full textPassive ventilation systems have the potential for reduced operating costs in office buildings while maintaining ventilation rates consistent with acceptable indoor air quality. There is a surge of interest in more developed economies for passive ventilation technology but much work is needed before this potential can be realized in sub-Saharan Africa. This explorative study reviews the adoption and adequacy of alternative ventilations systems in office buildings located in the central business district (CBD) of Nairobi, Kenya. Data for the study was obtained through questionnaires and interviews with architects and office building occupants purposively sampled. Thirty four tenants and thirty two architects of these high rise buildings were selected as units of the study analysis. Analysis of their responses is presented using simple descriptive and interpretative techniques. The study concludes that installed ventilation systems rarely meet the needs of occupants and that greater flexibility in ventilation design could provide a measure of individual control of air circulation that would enhance their general comfort
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
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