1,720,973 research outputs found
Ride-hailing app use for same-day delivery services of foods and groceries during the implementation of social activity restrictions in Indonesia
No full textThis study investigates e-shopping behavior change through ride-hailing applications (RHAs) for grocery and food as an alternative way to minimize out-of-home activities during the pandemic. Exploratory factor analysis and structural equation modeling were applied, which utilized data collected from a web-based questionnaire survey during the implementation of social activity restrictions in August 2021. The modeling results show a complementary effect between food and grocery delivery services, where an increase in food delivery is followed by an increase in grocery delivery, but not vice versa. Meanwhile, grocery delivery could substitute in-store grocery shopping. The frequency of food delivery before the pandemic also significantly affects food and grocery deliveries during the pandemic. The more individuals avail food delivery services before the pandemic, the more they avail grocery delivery services during the pandemic. In contrast, the less likely people are to avail food delivery services before the pandemic, the more likely they are to avail food delivery services during the pandemic. The study also found that RHA use for food delivery is influenced by the latent variable of e-shopping enjoyment, whereas the latent variable of e-shopping benefits affects RHA use for grocery delivery. Regarding the socio-demographic effect, females and well-educated people tend to increase RHA use for grocery delivery, and millennials are more likely to participate in grocery shopping and dining out. The findings provide valuable insights into the suppression of virus spread in the short term and travel demand management in the medium term
Estimation of Passenger Car Equivalent Value for Unsignalized Intersections in Yogyakarta
No full textPassenger Car Equivalent (PCE) is expected to be very accurate because it is very important in determining the capacity, degree of saturation, and handling of unsignalized intersections. Several methods have been used to estimate the PCE value, but based on the literature review, it is stated that the occupancy time method and the speed method are the most applicable for the unsignalized intersection conditions. This study aims to determine the most appropriate PCE value by comparing the occupancy time method and the speed method. To determine the most appropriate method in calculating the PCE of the unsignalized intersection, the calculation of the value of capacity and degree of saturation based on the method of speed and occupancy time is compared with the PCE value of MKJI. The result shows that the most suitable PCE value for unsigned intersections is the speed method. The recommended changes in the value of PCE are unmotorized vehicle PCE = 0.45, motorcycle PCE = 0.17, and large vehicle PCE = 2.2. Determining the correct PCE value is expected to provide accurate intersection performance results and determination of intersection problems
Ride-Hailing Preferences for First- and Last-Mile Connectivity at Intercity Transit Hubs
No full textThis study aims to fill a research gap by focusing on ride-hailing services (RHSs) as first- and last-mile (FLM) modes linking intercity hubs, which have been explored less than metro hubs. Involving 418 RHS users in the Yogyakarta conurbation, Indonesia, this study applies confirmatory factor analysis to identify the motivations for using RHSs as FLM modes and employs a seemingly unrelated regression model to analyse factors influencing RHS usage and the relationship between first-mile and last-mile use, which remains underexplored. The model’s results reveal that the utilization of RHSs for the first mile is mostly seen among younger, educated, and wealthy persons. However, these variables did not impact last-mile-mode use. The model’s results also show that in FLM contexts, vehicle ownership did not substantially impact RHS use. In addition, RHSs are less often used for trips to intercity bus terminals compared to airports and railway stations. This study also highlights the significance of user preferences, such as comfort and safety, seamless transaction and service, and cost and time efficiency, in influencing the use of RHSs for FLM modes. Increasing RHS accessibility at transit hubs, expanding e-payment options, simplifying payments, and prioritizing fairness are suggested strategies to improve urban sustainability through RHSs
Is Random Regret Minimization More Suitable in Predicting Mode Choice Decision for Indonesian Context than Random Utility Maximization?
No full text
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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