1,720,957 research outputs found
Artificial Intelligence for Automated Design of Elevator Systems
No full textConfiguration and design of complex products represents a challenge
in many application fields. The designer must take into account many
different aspects and make decisions typically driven by experience while
taking into account performance constraints and costs. Methods and tools
for design automation represents a viable solution to such complex decision
problems, giving also the possibility to optimize the performance of the final
product on particular context-driven aspects. Artificial intelligence (AI)
algorithms can help in dealing with complexity and enhance the current
tools by supplying solutions in feasible time.
My research is concerned with the development and testing of different
artificial intelligence (AI) techniques to automate the design of elevators.
Elevator design is a problem with many interesting aspects like the need to
deal with a hybrid search state space (continuous and discrete variables)
constrained by design requirements and safety regulations. The study,
design and integration of AI techniques in this particular application field
can provide the end user with design automation tools that output feasible
solutions within acceptable computation times.
My research considered AI techniques such as special-purpose heuristic
search, genetic algorithms and constraint satisfaction to solve elevator
configuration problems. I tested them considering different setups and
parts of the whole design process. I have also implemented a tool L IFT C REATE ,
available as a web application. L IFT C REATE leverages the findings of
my research to automate the design of elevators and, to the best of my
knowledge, there is currently no similar tool publicly available from either
academia or industry that provides the same level of design automation
Ontologies in System Engineering: A Field Report
No full textIn this paper, we consider four different contributions to system engineering wherein ontologies provide enhancements over traditional techniques
Computer Intensive Vs. Heuristic Methods In Automated Design Of Elevator Systems
No full textAutomated design of systems may require modeling and simulating potential solutions in order to search for feasible ones. This process often involves a trade-off between heuristics and computer-intensive approaches. Since neither of the two methods guarantees to always succeed, each problem domain requires a dedicated evaluation. In this paper, the domain of computer-automated design (CautoD) for elevator systems is studied with the goal of providing experimental evidence about which approach is best in which circumstances, and to serve as guidance for automated modeling of elevator systems
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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