1,720,956 research outputs found
Content pricing in mobile social network: a collective bidding approach
Get PDFPaper presented at the 5th Strathmore International Mathematics Conference (SIMC 2019), 12 - 16 August 2019, Strathmore University, Nairobi, KenyaAs smart mobile devices and phones become more ubiquitous and pervasive with wide array of sensors
and communication techniques, we can develop mobile social network (MSN) apps that enable these
devices to automatically create virtual communities where contents can be shared implicitly. For instance,
your smartphone could assist you have a productive encounter with other MSN users by informing you
about their interests and valuable contents that they may share with you. Example of such application is
Whozthat which uses MSN to enrich offline social interactions among strangers by suggesting topics of
common interest. Thus, MSNs enable users to discover and share contents with each other, especially at
ephemeral events such as exhibitions and conferences. Nevertheless, the incentive of users to actively
share their contents in MSNs may be lacking if the corresponding cost is high. In this paper, we propose
a content pricing and sharing framework in MSN that is built on users’ collective bidding and content cost
sharing. The content sharing problem is formulated as a distributed system that achieves cooperative
outcome while preserving non-cooperative decision making among the users through the proposed
collective bidding and broadcast nature of wireless communication. That is, co-located peers individually
propose payments to their encounters whose contents they are interested in based on their perceived values
of the contents. The respective content owners share their contents if the proposed payments can
collectively compensate the cost of sharing their contents with these peers. We show that this guarantees
individual rationality and promotes content sharing among the opportunistic encounters in the network.
Performance evaluation shows that the proposed mechanism reduces the time and cost to collect contents
of interest in the network and significantly improves network utilization.School of Information Science & Technology, Kisii University, Kenya
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe 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
Get PDF“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
Get PDFWe 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
Get PDFWe 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
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
E-agriculture Framework for Improving Agricultural Productivity among the Smallholder Farmers in Rural Kenya
Get PDFThe economy of Kenya depends mainly on agriculture where smallholder farming has a significant role as it employs 65 percent of the work force and contributes 32 percent of Kenya’s GDP. However, the agricultural industry in Kenya is currently facing difficulties in low productivity. The rural areas have the largest concentration of poverty and food insecurity. Majority of the farming activities in Kenya are on small scale and the problems of these farmers are multifaceted including sub-divisions and small farm sizes, leading to diseconomies of scale and low productivity. The goal of this research was to develop and validate an E-agriculture Framework for Improving Agricultural Productivity among the Smallholder Farmers. Descriptive research design was used. The study was carried out in South Eastern Kenya. The target population comprised 224 meteorological staff, 421 agricultural extension officers, 208 ICT personnel and 3,833 farmers. Data was collected using self-administered questionnaires, observation and interviews and analyzed using SPSS. The study found that challenges faced farmers were cost, illiteracy and ICT skills among others. Further, the study established that farmers required specific information such as soil management, pest management etc., for mainly improving their productivity. The researcher proposed an e-agriculture framework for improving agricultural productivity through promoting innovative use of ICT tools to bridge the distance between the farmers and the research communities. The proposed e-framework could be used by government policy makers and stakeholders on ICT on agricultural services in other developing countries to implement policies that speeded up the use of ICT on agricultural information
Records Management Policy in Enhancing Governance in Homa Bay County Headquarters, Kenya
Get PDFGlobally, records management plays major role in enhancing governance. The study objective was to examine the role of records management policy in enhancing governance at Homa Bay (HB) County Headquarters, Kenya. Target population comprised of 306 employees who are the custodians of records within the County Headquarters. Stratified technique was used to classify employees into strata. Yamane simplified formula was used to obtain a sample size of 174 respondents, which was proportionately distributed per department using random sampling technique. Structured questionnaires and interview schedules were pretested to determine validity and reliability and thereafter employed to collect data. Quantitative data was analyzed using descriptive statistics with the aid of IBM – SPSS (Version 23), presented in a table and interpreted in mean, frequencies, percentages, and standard deviation. Qualitative data was analysed using content analysis. The finding showed that records management policy was available in HB, though some employees were unaware. The study concluded that records managers in HB County should instill awareness among staff on the importance of records management policy. Based on the finding and conclusion, the study recommends, firstly, that HB records managers should ensure records management policy is properly documented and shared with all employees managing records with a view of increasing efficiency in the information flow thus enhancing governance and secondly, HB would identify areas of weakness in records management policy and focus on improvement
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