共查询到20条相似文献，搜索用时 15 毫秒
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Approaches to measurement of communication competence are reviewed. The self‐report approach to measurement of communication competence is examined. It is concluded that self‐reports have little validity as indicants of competent communicative performances but may serve as useful measures of self‐perceptions which may function as precursors of communicative choices. The Self‐Perceived Communication Competence scale is suggested as a measure which can he used for such purposes. 相似文献
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A number of online marketplaces enable customers to buy or sell used products, which raises the need for ranking tools to help them find desirable items among a huge pool of choices. To the best of our knowledge, no prior work in the literature has investigated the task of used product ranking which has its unique characteristics compared with regular product ranking. While there exist a few ranking metrics (e.g., price, conversion probability) that measure the “goodness” of a product, they do not consider the time factor, which is crucial in used product trading due to the fact that each used product is often unique while new products are usually abundant in supply or quantity. In this paper, we introduce a novel time-aware metric—“sellability”, which is defined as the time duration for a used item to be traded, to quantify the value of it. In order to estimate the “sellability” values for newly generated used products and to present users with a ranked list of the most relevant results, we propose a combined Poisson regression and listwise ranking model. The model has a good property in fitting the distribution of “sellability”. In addition, the model is designed to optimize loss functions for regression and ranking simultaneously, which is different from previous approaches that are conventionally learned with a single cost function, i.e., regression or ranking. We evaluate our approach in the domain of used vehicles. Experimental results show that the proposed model can improve both regression and ranking performance compared with non-machine learning and machine learning baselines. 相似文献
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A. Tyler Nix Jeffrey T. Huber Robert M. Shapiro II Andrea Pfeifle 《Journal of the Medical Library Association》2016,104(2):131-137
Objective
This study investigated responsibilities, skill sets, degrees, and certifications required of health care navigators in order to identify areas of potential overlap with health sciences librarianship.Method
The authors conducted a content analysis of health care navigator position announcements and developed and assigned forty-eight category terms to represent the sample''s responsibilities and skill sets.Results
Coordination of patient care and a bachelor''s degree were the most common responsibility and degree requirements, respectively. Results also suggest that managing and providing health information resources is an area of overlap between health care navigators and health sciences librarians, and that librarians are well suited to serve on navigation teams.Conclusion
Such overlap may provide an avenue for collaboration between navigators and health sciences librarians. 相似文献5.
In 2013, University of Nevada, Las Vegas (UNLV) Libraries embarked on a strategy to determine its readiness for a migration from its existing Integrated Library System (ILS) to a new cloud-based Library Services Platform (LSP). This article discusses a process for determining whether the time is right for an organization to move to a cloud-based LSP, and it will focus on the process undertaken at UNLV Libraries, describing the outcomes and lessons learned. 相似文献
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Relevance feedback is an effective technique for improving search accuracy in interactive information retrieval. In this paper, we study an interesting optimization problem in interactive feedback that aims at optimizing the tradeoff between presenting search results with the highest immediate utility to a user (but not necessarily most useful for collecting feedback information) and presenting search results with the best potential for collecting useful feedback information (but not necessarily the most useful documents from a user’s perspective). Optimizing such an exploration–exploitation tradeoff is key to the optimization of the overall utility of relevance feedback to a user in the entire session of relevance feedback. We formally frame this tradeoff as a problem of optimizing the diversification of search results since relevance judgments on more diversified results have been shown to be more useful for relevance feedback. We propose a machine learning approach to adaptively optimizing the diversification of search results for each query so as to optimize the overall utility in an entire session. Experiment results on three representative retrieval test collections show that the proposed learning approach can effectively optimize the exploration–exploitation tradeoff and outperforms the traditional relevance feedback approach which only does exploitation without exploration. 相似文献
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《Journal of Informetrics》2014,8(4):997-1004
The percentile-based rating scale P100 describes the citation impact in terms of the distribution of unique citation values. This approach has recently been refined by considering also the frequency of papers with the same citation counts. Here I compare the resulting P100′ with P100 for an empirical dataset and a simple fictitious model dataset. It is shown that P100′ is not much different from standard percentile-based ratings in terms of citation frequencies. A new indicator P100″ is introduced. 相似文献
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Warren Sandmann 《Communication Studies》2013,64(3-4):241-262
This essay examines the issue of “hate speech,” racial, sexual, and ethnic‐based expressions of hate, on the college campus. Many commentators have called for colleges and universities to create polices to prohibit such expression. Others have noted that First Amendment rights protect such expression. This essay discusses both positions, and offers a third perspective designed to protect expression without dismissing the damage caused by hate speech. 相似文献
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The present paper argues that audience reception studies have tended to be ahistorical, neglecting consideration of the ways in which audiences’ orientation to media may have changed over the decades. The paper explores the potential of combining oral history methods with reception studies, and addresses some of the difficulties which arise. An apparently simple way to introduce a historical perspective is attempted by including audience age as a central part of an empirical research design. By analysing a series of focus group discussions in which people respond to crime media from different points over the postwar period, the concept of age is unpacked in terms of generation and life course factors, and these are shown to influence reception of crime media from both the present and the past. Generation and life course, together with gender, also affect people's positioning in society in relation to real‐world crime, and this too affects the reception of crime media. The paper concludes by suggesting three ways in which audiences may have changed over the postwar period in terms of their interpretive frames for making sense of crime media, namely the frames of personal relevance, realism and moral relativism. 相似文献
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Javier Gómez-Ferri Gregorio González-Alcaide Ramón LLopis-Goig 《Journal of Informetrics》2019,13(4):100980
Increasing levels of collaboration constitute one of the characteristics of science. However, the knowledge production system is based on a fundamental discordance: on the one hand, it is cooperative in nature, with links articulated through coauthorships, and on the other, the systems for assigning merit and distributing rewards function on an individual scale. This contradiction can give rise to dysfunction and inappropriate practices.This study analyses researchers’ perceptions about the problems associated with authorship in scientific publications. We make use of a coauthorship dissatisfaction index that measures the degree of dissatisfaction with the author order on the byline, ghost authors, and unjustified authorship. There are differences in this regard according to the branch of knowledge, status in the academic hierarchy, and sex. Using a sample of 2344 university researchers, we observed an overall dissatisfaction rate of 12.4%. The highest rates were in the areas of Health Sciences and Social Sciences, in early-stage career academics, and in women. The cognizant authorities should take steps to regulate authorship, tailoring rules to each area of knowledge, with an eye toward reducing discrimination, gender bias, and abuse of authority. 相似文献
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Borja González-Pereira Vicente P. Guerrero-Bote Félix Moya-Anegón 《Journal of Informetrics》2010,4(3):379-391
A size-independent indicator of journals’ scientific prestige, the SCImago Journal Rank (SJR) indicator, is proposed that ranks scholarly journals based on citation weighting schemes and eigenvector centrality. It is designed for use with complex and heterogeneous citation networks such as Scopus. Its computation method is described, and the results of its implementation on the Scopus 2007 dataset is compared with those of an ad hoc Journal Impact Factor, JIF(3y), both generally and within specific scientific areas. Both the SJR indicator and the JIF distributions were found to fit well to a logarithmic law. While the two metrics were strongly correlated, there were also major changes in rank. In addition, two general characteristics were observed. On the one hand, journals’ scientific influence or prestige as computed by the SJR indicator tended to be concentrated in fewer journals than the quantity of citation measured by JIF(3y). And on the other, the distance between the top-ranked journals and the rest tended to be greater in the SJR ranking than in that of the JIF(3y), while the separation between the middle and lower ranked journals tended to be smaller. 相似文献
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Kory Floyd 《Communication Research Reports》2013,30(3):321-330
While vital for the development and maintenance of healthy interpersonal relationships, the overt communication of affection is fraught with risk. As a result, understanding the nature of affectionate communication is not only a matter of identifying behavioral tendencies, but also of exploring individuals’ normative expectancies for appropriate affectionate behavior. The present study examines the influence of biological sex, dyadic sex composition, and relationship type on people's perceptions of how frequently they engage in affectionate behavior and how appropriate they feel such behavior to be. Predictions regarding the influence of these factors were largely supported; moreover, the congruence between expectations and people's reports of their actual behavior was examined. 相似文献
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James Lichtenberg 《Publishing Research Quarterly》1999,15(3):46-54
Publishers have long outsourced many parts of their operations. Should they go the whole way and outsource the whole of the process, becoming more like a Hollywood studio: “a bank with a sales force?” A number of senior publishers surveyed responded to this proposition. Positive and negative aspects of outsourcing can be tested, suggesting considerable benefits possible from increased outsourcing of creative talent. 相似文献
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This study examined the impact that instructional technology use, course design, and instructor and student sex differences have on students’ initial perceptions of affect toward the course and the instructor. Participants included 864 students who were randomly assigned to read one of 16 scenarios that manipulated the amount of instructional technology use across two types of courses with either male or female instructors. A factorial analysis of variance revealed a significant main effect for technology use on students’ initial affect, as well as a significant two‐way interaction effect of technology use by student sex. Planned cell comparisons revealed that technology use has primarily a curvilinear effect, whereby students in the minimal and moderate technology use conditions reported higher levels of initial affect than students in the no technology and complete technology conditions. For the two‐way interaction effect, planned cell comparisons revealed that female students reported higher levels of affect as the amount of technology use increased from minimal to moderate amounts of use, whereas male students reported lower levels of affect across the same two conditions. Overall, the results highlight the importance of using instructional technology within a framework of pedagogical methods designed to achieve specific instructional objectives. 相似文献
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Utilization of CSR to build organizations’ corporate image in Asia: need for an integrative approach
Augustine Pang May O. Lwin Chrystal Shu-Min Ng Ying-Kai Ong Shannon Rose Wing-Ching Chau Kristle Poh-Sim Yeow 《亚洲交流杂志》2018,28(4):335-359
Corporate social responsibility (CSR) has been found to be a strong predictor of a favorable corporate image [Gray, 1986. Managing the corporate image: The key to public trust. London: Quorum Books]. Websites have become an essential communication platform [Dawkins, 2004. Corporate responsibility: The communication challenge. Journal of Communication Management, 9(2), 108–119]. This study aims to investigate how CSR can be used in enhancing organizational corporate image. Content analyses of 150 corporate websites of organizations in Asia headquartered in Singapore were conducted, followed by in-depth interviews with public relations (PR) practitioners to examine the motivations behind their CSR engagement. Findings showed that organizations utilized CSR as a means to enhance corporate image via four ways: Engaging in two-way conversations with stakeholders, adopting an inside-out communication approach with employees, recognizing the relevance of other CSR communication channels, and communicating CSR with authenticity. However, some organizations hesitate to use CSR communication to enhance their corporate image because they wanted to avoid being seen as using CSR as a promotional tool. 相似文献
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Katherine E. Rowan 《Journal of Applied Communication Research》2013,41(4):300-329
Research in the field of risk communication, the study of communication about uncertain physical hazards, has chiefly focused on enhancing understanding of risk concepts or making the development of risk management policy more democratic. For risk communication to be effective, a third focus is also necessary: risk communicators need an understanding of communication as a problem solving process. To facilitate this understanding, this paper offers a framework for analyzing risk communication situations and developing messages to use in those situations. The paper discusses four goals frequently pursued by risk communicators: creating awareness about the existence of important phenomena, enhancing understanding of complicated ideas, developing agreement about policy options, and motivating action. Obstacles to these goals and strategies for achieving them are identified in a diverse set of literatures. 相似文献
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This study examines the rationalisation of the news frames of currency-related international economic interaction by analysing news articles from the ‘China Focus’ column in China’s state-run Xinhua News Agency. Thematic analysis of the main themes in the news articles shows dominant positive coverage of China’s economic development. Using qualitative content analysis, it also investigates the breeding of the ‘emergence’ of constructive journalism practices in China. It finds that Xinhua prioritises the frames of referring to solutions to the conflict and problem and mentioning the social and economic stability, sustainability, and prosperous development. The frames of moral judgement, conflict and its formation, and human interest are less applied in news articles. It bears elements of constructive journalism, but still needs efforts to make a clear division from positive journalism and Party journalism. 相似文献
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Dani S. Kvam 《Journal of Applied Communication Research》2017,45(1):1-20
This research explores interactions among Mexican immigrants and their U.S.- and Mexican-born allies at an immigrant support center (ISC) in the U.S. Southwest. I propose that to support Mexican immigrants in resettling, allies who work at this ISC must apply cultural knowledge about competent communication for Mexican speakers to structure their strategic actions (Sprain & Boromisza-Habashi, 2013). Taking an ethnography of communication (EOC) approach, I investigate the means and meanings of communication (Hymes, 1972) for speakers that point to cultural knowledge about competent communication. Data for this study include 7 months of observation, interviews with 37 community and staff members, and public documents collected during fieldwork. Findings reveal five means of communication that are meaningful for speakers at ISC. This research demonstrates the practical utility of the EOC in understanding how cultural expectations for communication may both assist and limit ISC’s efforts to support resettlement. 相似文献