1,720,957 research outputs found
Double skin façades integrating photovoltaics and active shadings: a case study for different climates
No full textIn this paper the energy potential of an innovative Double Skin Façade integrating
Photovoltaics (DSF-P) for different weather conditions is investigated. The proposed system
consists of semi-transparent and opaque PV modules integrated in the exterior skin of the
façade and active shading devices implemented within the cavity. The innovative single or
multi–story proposed DSF can co-generate solar electricity and thermal energy (for space
heating or other building applications). In order to effectively cool down the photovoltaics
and increase their electrical efficiency, the buoyancy-driven air flow within the cavity may be
assisted by a fan (natural / hybrid ventilation). Active roller blinds are taken into account to
regulate heating and cooling loads while controlling the daylight in the corresponding
adjacent indoor spaces. With the aim to simulate the system performance, the temperature
distribution and the airflow in the DSF, a mathematical model was developed. It is also
capable to predict the energy flow, as well as the active and passive effects of the DSF-P on
the energy consumption of the adjacent perimeter zones. The simulation model is based on a
detailed transient finite difference thermal network, including accurate algorithms for the
calculation of the heat transfer phenomena taking place within the DSF-P. The model, also
allows performing parametric and sensitivity analyses, useful for pre-feasibility studies at the
design phase of new buildings or for retrofit projects implementing the proposed DSF-P. In
this paper, in order to determine the values of critical design and operating parameters that
minimize the overall energy consumptions, a parametric analysis is carried out. Thus, a case
study related to a high-rise office building located in diverse climate zones is presented.
Simulation results show the effects due to some crucial DSF-P design and operation
parameters on the energy demand of the adjacent zones, and the effectiveness of the proposed
system to reach the goal of net zero energy building
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
Modeling and design of Net ZEBs as integrated energy systems
No full textNet-zero energy buildings (Net ZEBs) are emerging as a quantifiable design concept and a promising solution to minimizing the environmental impact of buildings. This is the main concept that is focused on this chapter with emphasis on dynamic modeling and examples of technological approaches to achieve net-zero energy. Appropriate modeling of building-integrated solar energy systems is essential for the design of Net ZEBs and the study of optimal control strategies. The net-zero energy balance may be achieved through a combination of passive and active solar technologies, heat pumps, combined heat and power, and energy efficiency measures to reduce energy consumption for lighting and appliances. The chapter presents approaches that are primarily used for modeling and simulating passive solar systems and some building-integrated solar systems. The economics of building integrated solar systems, such as building-integrated photovoltaic/thermal system (BIPV/T), are complex
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
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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