1,721,145 research outputs found
Design and Application Evaluation of Pedestrian Crossing Protector
No full textThe inter road user conflict of interest bringing on the increase of traffic accident record; in the situation, that pedestrian group usually became the victim, specially the student and the elderly with limitation on crossing the street. An instrument which implementing safety crossing concept, simple manufacture and operation (user friendly), as well as minimum traffic delay occurred, is indispensable. Pedestrian Crossing Protector (PIREN) will be a choice with the function of giving crossing guidance to pedestrian, at a special crossing demand condition. This instrument working concept is using minimum traffic time gap for guiding and managing crossing activity in proper and safe term. The sample crossing activity survey shows that pedestrian and speed characteristics weren’t suitable with the manual and need crossing facility. PIREN that was designed for that situation needs 12.11 seconds for taking across nine people, produces delta-flow and delta-degree of saturation as 24.796 pcu/hr and 0.0104 pts
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
Accident analysis on surabaya - gempol toll road
Full text linkABSTRACT
There are significant differences between ordinary road and toll road as a free way. By the term \u27free\u27, it does not mean that a toll road is entirely free from the problems of traffic accidents, even, the tendency for accident is higher in quality.
This study identifies the main factors that cause an accident, vulnerable areas, and actions it have been carried out based on the characteristics of accidents. It aims to formulate alternatives of solutions in order to eliminate the contribution of the causes of accident.
The characteristic of accidents on Surabaya â Gempol Toll Road shows a high rate of occurrence, in which driver take the highest responsibility followed by vehicles and road and environment. The road factor itself as the cause of accidents is almost unidentified. Among the various kinds of vehicle, minibuses are the most vulnerable ones to accident, and this indicates different trend from the past few years.
There is an interrelationship among factors, and they are interacting to one another in causing an accident. An accident often happens due to driver\u27s unpreparedness for the condition created by the toll road. Actions to eliminate accident should be adjusted to the existing characteristics. Single sites management (by the installment of sign post, wingspan, etc) and mass action management (safety campaign and assistance, etc.) are among the recommended actions to take
studi kasus di Yogyakarta.
Full text linkThis research was carried out in Yogyakarta and its surroundings to analyze fare of ojek based on vehicle operating cost. Three types of motorcycles namely Honda, Yamaha and Suzuki that were normally used for ojek was investigated. The results of study show that based on the vehicle operating cost, the fare of ojek using Honda is the cheapest, following Yamaha and Suzuki. The last two types of motorcycles are almost the same at the vehicle operating cost. These figures may advise to operators when they negotiate the fare
Tinjauan tentang "anjlogan" kendaraan rel.
Full text linkPeristiwa \u27anjlogan" kereta ("derailment") yang menjadi sebab suatu kecelakaan, diakibatkan oleh timbulnya gaya vertikal ke atas yang demikian besarnya, sehingga dapat mengangkat roda-kereta ke atas rel. Gaya vertikal ke atas tersebut timbul kat\u27ena adanya gesekan pada saat roda melalui daerah lengkung atau mungkin pengaruh lain dan luar. Oleh karenanya, untuk mengatasi bahaya "anjlogan" perlu dipertimbangkan tentang faktor-keamanan ke luar rel yang ditinjau balk dan gaya ataupun momen yang bekerja
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