1,721,012 research outputs found
Are seat design processes of students similar to those of professionals?
No full textBACKGROUND: Designers develop their basic competences during their design education and these competences are later amplified and refined during their professional career. Therefore, one could expect that the design processes of professionals and of student designers are conducted differently, and that these processes consist of different components (steps, actions, methods, tools, etc. used in the design process). OBJECTIVE: The differences and similarities between the design processes of design students and professionals were studied. In addition the effect of the designers experience on the design process is studied. METHODS: The design processes of seating products of 19 professional designers, 15 master students and 16 bachelor students were compared in order to understand the differences in the components they apply in their design process. RESULTS: The results showed significant differences between professional designers and design students for eight out of fifteen of the components. The components for which differences were found were applied more frequently by professionals than by students. For six of the components significant positive correlations were found with the designer's experience. CONCLUSIONS: There are significant differences between the design processes of design students as well as similarities. The differences amongst others related to the designers' experience.status: Publishe
A 3D Anthropometric Approach for Designing a Sizing System for Tight Fitting Garments
No full textThe purpose of this study is to investigate a new approach in creating sizing systems of wetsuits for the surfing industry. A good sizing system focusses on the balance between fit, comfort and functionality. The research provided a theoretical framework that assesses the natural body shape variations within a given user population. The focus is on gaining the highest level of coverage through determining the right body type classification. As a result digital mannequins are created that can serve as representation of body types associated with a specific apparel sizes.This research addresses the sizing of wetsuits for the European market. It incorporates the investigation of the full human torso and extremities. This study uses the 3D anthropometric data from the CAESAR project. The population contains 1255 Dutch and 801 Italian body scans. The population is filtered to gain an accurate representation of the surfer body types. Furthermore different methods are investigated in classification of body types considering the prioritization of different anthropometric dimensions. The resulting population is divided in groups that would be suitable for a specific wetsuit size. These populations are merged into average and extreme 3D mannequins that can be used in 3D apparel design software such as Clo3D or Optitex. These mannequins provide an accurate representation of specific wetsuit sizes and can be used to digitally asses the fit of the product. To make the mannequins suitable for 3D pattern drawing and flattening applications, the mannequins are reduced in size according to the desired tightness of a wetsuit. Current sizing charts on the market have been set up with the use of surveys and optimized based on customer feedback. It might not consider the entire population outside their current customer population. Furthermore these sizing charts are created based on one dimensional measurements and therefor do not capture the full shape of the human body. A new approach that uses 3D anthropometric data can give new insights in designing the right product dimensions for the highest sizing coverage. The use of 3D mannequins will increase the amount of anthropometric information that can be used in the apparel clothing industry. The approach is demonstrated on Italian and Dutch subjects and provides a good coverage for the European market. It can be trivially extended to other populations when the necessary data is available.Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.Applied Ergonomics and Desig
Towards comfortable communication in future vehicles
No full textThis research aims to study the effect of seat and/or backrest rotation on comfort and quality of conversation. Different sitting arrangements were tested to study the effect of the seat layout on: 1) (dis)comfort experience; 2) conversation quality and 3) postures. Two seats were arranged in different angles (0° 45° 90° and 180°) at the same distance (1 m) and participants were asked to talk to each other. The participants’ postures were acquired by using cameras and markers on the participants’ body. Questionnaires were used to rate the perceived (dis)comfort and quality of conversation. Results show that 90° configuration scored the best both in overall comfort and quality of conversation; while the 0° configuration scored the lowest in both ratings. A strong correlation was established between high comfort and good quality of conversation.Accepted author manuscriptApplied Ergonomics and DesignMechatronic Desig
The effect of posture, pressure and load distribution on (dis)comfort perceived by students seated on school chairs
No full textThe study of ergonomics and (dis)comfort is a major topic of interest to scientific literature since the introduction of ISO 11228. Over the past 30 years, researchers have attempted to understand the mechanisms underlying perceptions of (dis)comfort for a seated subject. Three main factors are recognized as paramount for the comfort performance of a seat: human body posture, pressure at interface, and load distribution on the contact area; this study investigates the relationships between them and examines their significance for (dis)comfort perception. Physiological factors are known to play a role in (dis)comfort perception, and we consider these as a consequence of the three main parameters above. An explanation is given for this hypothesis. Experimental tests were conducted using a school chair with a rigid seat pan and no armrests for reducing the number of factors of influence. Conclusions show the levels of correlation between acquired information and perceived (dis)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
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