1,721,027 research outputs found
Transportation Policy and the Effects on Modal Choice in the EU
Full text linkThis study addresses the question of how trans-national regulations could stimulate environmentally friendly transportation. Effects of capacity limitations, costs and transit time requirements on the attractiveness of different containerized transportation modes are modeled for a representative freight corridor in the European Union. Multiple legislative scenarios are developed for 2010, taking into account various characteristics of road, rail and inland waterway transportation, including costs to society and environmental costs. Analysis of the scenarios reveals that under the current legislation environmentally friendly transportation modes are already very attractive, but lack sufficient capacity to deal with demand. Further legislative interventions, such as increased taxation, would only lead to increased transportation costs, and render containerized transportation less effective and more costly to society. For a more favorable modal split, it appears that important investments are to be made in dedicated cargo rail and inland waterways.Economics ;
Shopping for fresh food online during Covid-19 in Shanghai
No full textAim: The main goal is to examine the role of perceived risk in determining customers’ willingness to purchase fresh food online.
Research methods: Data were collected through an online survey. Respondents were recruited via a call on online platforms. A total of 287 fresh food e-commerce consumers participated.
Conclusions: The results showed that perceived risk of COVID-19 infection had a positive effect on purchase intention, perceived risk of purchase behavior had a negative impact on purchase intention, and attitude was a mediating variable between perceived risk and purchase intention. Past experience moderated the relationship between perceived risk of purchase behavior and attitude. Actual consumer behavior was explained directly by purchase intention
Originality: Next to attitude, subjective norms, and perceived behavioral control, the effects of perceived risk of COVID-19 infection, perceived risk of purchase behavior, and past experience on purchase intention and actual behavior to purchase fresh food online were examined in an extended Theory of Planned Behavior model. Previous studies measured overall risk perception as risk perception associated with purchase behavior and risk perception related to Covid-19 infection. The influence of both types has rarely been examined distinctively.
Implications: Retailers can contribute to lowering consumers’ risk perception of purchasing fresh food online and offer creative promotions to attract repeat purchases.
Limitations: Only attitude correlated significantly with purchase intention, implying that additional variables may influence purchase intention. Also, although the influence of past experience is considered, a detailed distinction was not made.
JEL: D01, D8
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
Disruptions due to COVID-19 – the ultimate stress test for supply chain managers
No full textDuring the COVID-19 pandemic, many companies were struggling to maintain an uninterrupted flow of goods and services. Based on expert interviews, we investigate the effectiveness of various solutions and strategies to counter different supply chain disruptions. At the beginning of the pandemic, proactive measures such as stock buffering and dual sourcing proved to be useful in case of upstream disruptions (supply shortages), due to closure or reduced production or distribution. A counterintuitive finding is that reactive measures appear more effective than proactive measures in case of downstream disruptions (demand spikes), due to sudden shifts of demand. Based on our findings we propose several research propositions.</p
Saving lives with fewer discussions:Coordination between military and non-military organizations during disaster relief operations
No full textPurpose: This study focusses on the coordination required between military and non-military organisations during humanitarian disasters.Design / Research methods: An in-depth case study was conducted of the disaster relief operation after hurricane Matthew on Haiti in October 2016. We investigated the support of the Dutch military organization and its coordination with the non-military relief organizations. We examined coordination issues at operational, tactical, and strategic levels.Findings: The study shows that no coordination problems occurred at operational level. At the tactical level, cultural differences between military and non-military organizations resulted in coordination problems and deviant perspectives on urgency. At the strategic level, there was a disagreement between the Dutch Ministry of Foreign Affairs and the Dutch Ministry of Defence regarding the Oslo Guidelines. A minority agreed that the guidelines actually apply to military organizations during disaster relief operations.Practical implications: The coordination between the military organization and the non-military relief organization during disaster relief operations can be improved by promoting common and mutual respect and defining a clear tasks and role fulfilments. A first step to improve the coordination is to get familiarity and clarity on the Oslo Guidelines. Another step for improvement is for the military organization to accept that it has no leading but an assistance role during disaster relief operations. Research limitations/implications: A single case study limits the external validity of the results, although useful insights were gained. Future research could address the role of the Oslo Guidelines during disaster relief operations. Are these guidelines still valid, should they be updated, and are the sufficiently known by all relief organizations, including the military?Originality/value of the article: The world is faced with an increasing occurrence of disasters affecting human lives. More lives could be saved when military and non-military organizations would work together more effectively. This is one of the first studies to explore the terms of engagement at the start of relief operations
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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