1,721,042 research outputs found
Early design methods for an HEV - Optimizing HEV vehicle design to achieve CO2 targets
No full textPurpose of the paper is to define a methodology to optimize the design of an HEV at early phases of development, of its electric components and the vehicle mass in order to achieve target CO2 emissions by using a meta modelling approach using the most cost-efficient way. Starting from a base diesel powered architecture, identified parameters focus of the optimization include base vehicle curb mass, battery size, degree of hybridizatio
Development of CO2 oriented feature for future powertrain-enabling saling for next generation stop & start
No full textEnvironmental protection and efficient energy utilization have been always important issues in the automotive industry, but have gained significant momentum with the growing demand for mobility around the world and its impact on the global environment. Towards this scope, many improvements in automobile technology have been accomplished over the past decades. However, fuel economy with improvements in vehicle, powertrain technology have been penalized by customer preferences. Automotive industry faces the challenge of producing vehicles that meet future fuel economy and emissions requirements which are priced to meet the desired customer value
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
Computational Non-linear Analysis Applied to Different Models of Infilled Frames under a Seismic Action
No full textThe presence of infill walls, especially those made of masonry, modifies the behaviour of the structure when
subjected to horizontal forces, with a significant increase of stiffness and strength.
The experience gained over time has shown that this phenomenon of interaction between structure and masonry
and its interpretation is very complex, and consequently difficult to predict.
This paper proposes some different models able to evaluate the effect of infill masonry panels on reinforced
concrete frames subject to a seismic action. The different failure-behaviour of the same structure is considered
both in the case of neglecting the contribution of the external walls and in the case of appropriately consider this
contribution in terms of strength to horizontal forces and collapse mechanism.
Finally the results obtained from the different models assumed for the interacting tufa masonry panels are
compared with the results for a similar bare frame
Development of a Stop & Start Sailing Activation Strategy for a Real-World Driving
No full textStop and Start (S&S) systems have been favorably accepted by OEMs lately as they offer significant fuel economy improvements at minimal cost. According to upcoming homologation cycles and due to more stringent Corporate Aggregate Fuel Economy (CAFE) targets, S&S should be further improved by operating it also at vehicle in motion. This feature is known as Sailing: it decouples the engine from the driveline during coasting, extending the distance covered by the vehicle, and shuts the engine off. The automation of transmissions paves the way for the introduction of this feature.
In order to evaluate the opportunity for a sailing event over real-driving conditions, an innovative control strategy has been developed and assessed. This paper assesses, through numerical simulations and experimental testing on a C-segment vehicle powered by mid-sized EU6 diesel engine, the fuel economy potential of S&S Sailing over several schedules, i.e. FTP-75, US06, WLTP, Real Driving Emission (RDE). The simulation and experimental data over the new WLTP cycle highlight significant fuel economy benefits without significant engine emission drawbacks
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
- …
