104,624 research outputs found
Diet transition and supermarket shopping behaviour: is there a link?
No full textSupermarkets are leading the transformation of food markets in Asia, yet few studies have examined the impact of this so-called supermarket revolution on diet transition and the related nutritional and health implications. We use data from a sample of 1,180 urban households in Indonesia to explore the relation between the increased use of modern food-retail outlets and the emergence of unhealthy dietary patterns. The results of our ordinary least-squares and instrumental variables regressions suggest a negative and significant relation between the share of food expenditure at modern food retailers and the healthiness of consumer food purchases, even after we control for other characteristics that may influence foodconsumption decisions.Hery Toiba, Wendy J. Umberger, Nicholas Mino
Exploring Indonesian consumers' willingness to pay for high-value agricultural products
No full textTraditional food systems in Indonesia are being transformed as a result of modern food retail development and the penetration of multinational retailers. Rising disposable incomes and food safety concerns have prompted food retailers to market food products with additional quality assurances and/or safety claims, often termed credence attributes. Although marketing of credence attributes is growing, public quality standards or certification schemes for credence attributes are essentially non-existent in Indonesia. Thus, credence marketing claims are often not certified by a third-party. The Indonesian government is currently under pressure to develop certification programs allowing claims such as organic or pesticide-free to be verified. As little is known about how Indonesian consumers will benefit from a public food labelling program, we investigate consumers’ understandings, perceptions and demand for food products marketed as certified organic or pesticide-free using an urban consumer survey conducted in Indonesia. The potential demand for certified organic food products is quantified using respondents’ stated willingness to pay (WTP) for certified organic fruit and vegetables, shrimp and poultry. Some 67% of respondents were willing to pay an average premium of 20% for certified organic products, and 60% indicated that they preferred certification to be overseen by the Central Government. Female respondents with children living at home, as well as those who were older, more educated, more concerned about nutrition, and those indicating that they had previously purchased organic products were more willing to pay more for certified organic food products. The results suggest further demand growth in Indonesia for certified organic food products.Wahida, H. Toiba, W.J. Umberger, N. Mino
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe 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
Indonesian consumers' choice of food retail formats: Are traditional food retailers being "crowded out"?
No full textIndonesia is experiencing a dramatic growth in the number of modern food retailers, including hypermarkets, supermarkets and mini-markets. Research in other developing countries has found smallholder farmers and consumers can be adversely affected, particularly if traditional food retailers are crowded out of the market. Data from a survey of 1180 urban Indonesian households are analyzed to shed light on these issues. Ordered probit models are used to explore the factors related to the higher frequency of food purchases from modern versus traditional food retail formats. Those consumers who are more likely to shop at modern food retailers have higher incomes, education, assets (e.g., refrigerators), credit cards, and higher concerns about nutrition and food safety. Conversely, price-concerned consumers are more likely to shop at traditional food retailers.H. Toiba, W.J. Umberger, Wahida , R. Stringer, N. Mino
Appropriate Similarity Measures for Author Cocitation Analysis
No full textWe 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
No full textWe 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
The construction of Karen Karnak: The multi-author-function
No full textThis thesis is situated within the comparatively recent developments of Web 2.0 and the emergence of interactive WikiMedia, and explores the mode of authorship within a Read/Write culture compared to that of a Read/Only tradition. The hypothesis of this study is that the role of the audience has become merged with the author, and as such, represents new functions and attributes, distinct from a more conventional concept of authorship, in which the roles of audience and author are more separate. Read/Write and participatory culture, as defined by this study, is focused on collaboration, and includes the influences of D.I.Y. culture, Open-Source practices and the production of text by multiple authors. Multi-authorship presents a re-thinking of several concepts which support the notion of the individual author, since the focus of multi-authorship is not on attribution and ownership of a finished text, but on the continued malleability of a text. Modes of multi-authorship, demonstrated in the use of the pseudonyms Alan Smithee and Karen Eliot, represent declarative authors whose names signify multiple origins, whilst concurrently indicating a distinct body of work. The function of these names form an important context to this study, since primary research involves the construction of an experimental mode of multi-authorship utilising WikiMedia technology and the interaction of thirty nine participants, who are invited to create a body of work under the collective pseudonym Karen Karnak. The data generated by this experiment is analysed using aspects of Michel Foucault's author-function to identify and determine power structures inherent in the WikiMedia context. The interplay of power structures, including concepts such as identity, ownership and the body of work, affect the resulting mode of authorship and contribute to the construction of Karen Karnak, suggesting further areas of research into the emerging multi-author
Contribution of Information and Communication Technology (ICT) in Country’S H-Index
No full textThe aim of this study is to examine the effect of Information and Communication Technology (ICT) development on country’s scientific ranking as measured by H-index. Moreover, this study applies ICT development sub-indices including ICT Use, ICT Access and ICT skill to find the distinct effect of these sub-indices on country’s H-index. To this purpose, required data for the panel of 14 Middle East countries over the period 1995 to 2009 is collected. Findings of the current study show that ICT development increases the H-index of the sample countries. The results also indicate that ICT Use and ICT Skill sub-indices positively contribute to higher H-index but the effect of ICT access on country’s H-index is not clear
Fully Turbulent Mean Velocity Profile for Purely Viscous non-Newtonian Fluids
No full textThe characteristic near wall behavior of turbulent flow of purely-viscous non-Newtonian fluids is discussed for both power-law (P.-L.) and Herschel-Bulkley (H.-B.) rheological models. A proper scaling is presented for H.-B. fluids to establish an analogy with power-law fluids with same flow index. To provide reference data for turbulent flow of non-Newtonian fluids, DNS simulations of power-law fluids are conducted in a rectangular channel for a large range of power-law indices ( = 0.5, 0.69, 0.75, 0.9, 1, 1.2). The DNS data show that the mean velocity profile in the viscous and logarithmic layers follow expressions of the form and respectively, where shows a logarithmic dependency on the flow index.Comparison with some experimental data shows the above formulation to be valid for Reynolds numbers (based on shear velocity) as high as 1000
H-index and research evaluation: A suggested set of components for developing a comprehensive author-level index
No full textThe H-index has been investigated in various studies; this index has many strengths that have made it popular. However, it also has weaknesses, due to which other indicators have been developed. This study aims to identify the strengths and weaknesses of the H-index and provide the minimum set of necessary components for developing a comprehensive author-level index. In this systematic literature review, Scopus, PubMed, Web of Science, Emerald, and ProQuest databases were searched to identify relevant studies. From the number of 14,253 retrieved studies, after two stages of screening, 81 studies were selected according to the eligibility criteria for data extraction. The findings of the study led to the identification of 15 strengths in the three categories of Quality Features, Simplicity, and Suitability, and 13 weaknesses in the six categories of Publications, Citations, Academic Age, Author Credit Allocation, Variety of Fields, and mathematical calculation for H-index. Finally, 28 components were identified as the minimum set of necessary components to develop a comprehensive author-level index to help evaluate researchers more realistically and fairly. The minimum components that need to be considered in developing a comprehensive author-level index can be proposed as follows: Quality Features, Simplicity, Suitability, Publications, Citations, Academic Age, Author Credit Allocation, Variety of Fields, and mathematical calculation
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