400 results
Search Results
2. Do altmetrics correlate with the quality of papers? A large-scale empirical study based on F1000Prime data.
- Author
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Bornmann, Lutz and Haunschild, Robin
- Subjects
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MULTIPLE correspondence analysis (Statistics) , *ALTMETRICS , *CITATION analysis , *BIBLIOMETRICS , *EMPIRICAL research - Abstract
In this study, we address the question whether (and to what extent, respectively) altmetrics are related to the scientific quality of papers (as measured by peer assessments). Only a few studies have previously investigated the relationship between altmetrics and assessments by peers. In the first step, we analyse the underlying dimensions of measurement for traditional metrics (citation counts) and altmetrics–by using principal component analysis (PCA) and factor analysis (FA). In the second step, we test the relationship between the dimensions and quality of papers (as measured by the post-publication peer-review system of F1000Prime assessments)–using regression analysis. The results of the PCA and FA show that altmetrics operate along different dimensions, whereas Mendeley counts are related to citation counts, and tweets form a separate dimension. The results of the regression analysis indicate that citation-based metrics and readership counts are significantly more related to quality, than tweets. This result on the one hand questions the use of Twitter counts for research evaluation purposes and on the other hand indicates potential use of Mendeley reader counts. [ABSTRACT FROM AUTHOR]
- Published
- 2018
- Full Text
- View/download PDF
3. Social and content aware One-Class recommendation of papers in scientific social networks.
- Author
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Wang, Gang, He, XiRan, and Ishuga, Carolyne Isigi
- Subjects
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INFORMATION technology , *SOCIAL networks , *SPARSE graphs , *HYBRID computers (Computer architecture) , *HYBRID power systems - Abstract
With the rapid development of information technology, scientific social networks (SSNs) have become the fastest and most convenient way for researchers to communicate with each other. Many published papers are shared via SSNs every day, resulting in the problem of information overload. How to appropriately recommend personalized and highly valuable papers for researchers is becoming more urgent. However, when recommending papers in SSNs, only a small amount of positive instances are available, leaving a vast amount of unlabelled data, in which negative instances and potential unseen positive instances are mixed together, which naturally belongs to One-Class Collaborative Filtering (OCCF) problem. Therefore, considering the extreme data imbalance and data sparsity of this OCCF problem, a hybrid approach of Social and Content aware One-class Recommendation of Papers in SSNs, termed SCORP, is proposed in this study. Unlike previous approaches recommended to address the OCCF problem, social information, which has been proved playing a significant role in performing recommendations in many domains, is applied in both the profiling of content-based filtering and the collaborative filtering to achieve superior recommendations. To verify the effectiveness of the proposed SCORP approach, a real-life dataset from CiteULike was employed. The experimental results demonstrate that the proposed approach is superior to all of the compared approaches, thus providing a more effective method for recommending papers in SSNs. [ABSTRACT FROM AUTHOR]
- Published
- 2017
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4. Collaborator or quasi–grant maker? Revealing the dissonance in international development charities' partnership representations.
- Author
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Abnett, Helen
- Subjects
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TRUSTS & trustees , *NONGOVERNMENTAL organizations , *CHARITIES , *STAKEHOLDER theory , *CORPORATION reports - Abstract
This paper explores partnership representations in the Trustees' Annual Reports & Accounts (TARA) of English and Welsh international non-governmental organisations (INGOs). INGOs are prominent global actors, whose TARA serve important accountability purposes, while also acting as key fundraising communications. The study uses thematic analysis to examine 83 TARA published between 2014 and 2018 by 29 INGOs. Findings show that in these TARAs' narrative sections, partnership relationships are largely described using the language of collaboration, yet accord the INGO the primary role. In the subsequent managerial and financial sections, however, these relationships are presented as a hierarchy, focusing on upwards accountability from project partners to the INGO. These presentations suggest that INGOs continue to embed power inequalities in their partnership relationships. Furthermore, drawing on stakeholder theory, this exploratory study argues that the contradiction found demonstrates that INGO reporting prioritises legitimation rather than authenticity, and obfuscates understanding of international development partnership relationships. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
5. Authorship and citation manipulation in academic research.
- Author
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Fong, Eric A. and Wilhite, Allen W.
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RESEARCH papers (Students) , *SCHOLARS , *RESEARCH grants , *MANIPULATIVE behavior , *GOVERNMENT aid to research - Abstract
Some scholars add authors to their research papers or grant proposals even when those individuals contribute nothing to the research effort. Some journal editors coerce authors to add citations that are not pertinent to their work and some authors pad their reference lists with superfluous citations. How prevalent are these types of manipulation, why do scholars stoop to such practices, and who among us is most susceptible to such ethical lapses? This study builds a framework around how intense competition for limited journal space and research funding can encourage manipulation and then uses that framework to develop hypotheses about who manipulates and why they do so. We test those hypotheses using data from over 12,000 responses to a series of surveys sent to more than 110,000 scholars from eighteen different disciplines spread across science, engineering, social science, business, and health care. We find widespread misattribution in publications and in research proposals with significant variation by academic rank, discipline, sex, publication history, co-authors, etc. Even though the majority of scholars disapprove of such tactics, many feel pressured to make such additions while others suggest that it is just the way the game is played. The findings suggest that certain changes in the review process might help to stem this ethical decline, but progress could be slow. [ABSTRACT FROM AUTHOR]
- Published
- 2017
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6. Leadership factors for cardiopulmonary resuscitation for clinicians in‐hospital; behaviours, skills and strategies: A systematic review and synthesis without meta‐analysis.
- Author
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Jurd, Catherine and Barr, Jennieffer
- Abstract
Aim Design Methods Data Sources Results Conclusion Implications for Nursing Profession Impact What were the main findings? Trial Registration Patient of Public Contribution To identify leadership factors for clinicians during in‐hospital cardiopulmonary resuscitation.Systematic review with synthesis without meta‐analysis.The review was guided by SWiM, assessed for quality using CASP and reported with PRISMA.Cochrane, EMBASE, PubMed, Medline, Scopus and CINAHL (years of 2013–2023) and a manual reference list search of all included studies.A total of 60 papers were identified with three major themes of useful resuscitation leadership; ‘social skills’, ‘cognitive skills and behaviour’ and ‘leadership development skills’ were identified. Main factors included delegating effectively, while being situationally aware of team members' ability and progress during resuscitation, and being empathetic and supportive, yet ‘controlling the room’ using a hands‐off style. Shared decision‐making to reduce cognitive load for one leader was shown to improve effective teamwork. Findings were limited by heterogeneity of studies and inconsistently applied tools to measure leadership.Traditional authoritarian leadership styles are not wanted by team members with preference for shared leadership and collaboration. Balancing this with the need for team members to see leaders in ‘control of the room’ brings new challenges for leaders and trainers of resuscitation.All clinicians need effective leadership skills for cardiopulmonary resuscitation in‐hospital. Nurses provide first response and ongoing leadership for cardiopulmonary resuscitation. Nurses typically display suitable skills that align with useful resuscitation leader factors.Collaboration rather than an authoritarian approach to leadership is preferred by team members. Nurses are suitable to ‘control the room’. Restricting resuscitation team size will manage disruptive behaviour of team members.PROSPERO Registration: CRD42022385630.No patient of public contribution. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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7. Physics-based models for communications in random complex propagation media, including keyhole effects in MIMO.
- Author
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Ishimaru, Akira
- Subjects
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GREEN'S functions , *COMMUNICATION models , *ATMOSPHERIC turbulence , *OCEAN turbulence , *STATISTICAL physics , *MIMO systems , *SIGNAL-to-noise ratio - Abstract
Extensive research has been reported on MIMO systems for complex environments. It is noted that many communications studies make use of the channel matrix of transmitters and receivers, signal vectors, SNR, and eigenvalues. However, the channel matrix is often expressed in terms of channel modeling, and the detailed statistical characteristics of the channel in terms of physical characteristics of atmospheric turbulence, particulate matter, and rough surfaces and terrain are often not explicitly shown. This paper discusses the inclusion of expressions of physical characteristics of the random medium in the channel matrix. Therefore, the key point of this paper is that the channel matrix is explicitly given in terms of the actual physical parameters of the random environment using the mutual coherence function and stochastic Green's functions; we call this a 'physics-based' communications model. This paper presents a formulation of physics-based communications models in the presence of a random medium based on analytical statistical EM theory. We use the keyhole MIMO as an example to show the key points of this approach. It is hoped that this study may help extend channel modeling to include analytical statistical EM theory for atmospheric turbulence, ocean turbulence, and rough terrain. [ABSTRACT FROM AUTHOR]
- Published
- 2023
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8. Interactive Informed Consent: Randomized Comparison with Paper Consents.
- Author
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Rowbotham, Michael C., Astin, John, Greene, Kaitlin, and Cummings, Steven R.
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INFORMED consent (Medical law) , *HUMAN experimentation , *HUMAN rights , *COMPARATIVE studies , *HEALTH risk assessment , *IPADS , *COMPUTER science - Abstract
Informed consent is the cornerstone of human research subject protection. Many subjects sign consent documents without understanding the study purpose, procedures, risks, benefits, and their rights. Proof of comprehension is not required and rarely obtained. Understanding might improve by using an interactive system with multiple options for hearing, viewing and reading about the study and the consent form at the subject’s own pace with testing and immediate feedback. This prospective randomized study compared the IRB-approved paper ICF for an actual clinical research study with an interactive presentation of the same study and its associated consent form using an iPad device in two populations: clinical research professionals, and patients drawn from a variety of outpatient practice settings. Of the 90 participants, 69 completed the online test and survey questions the day after the session (maximum 36 hours post-session). Among research professionals (n = 14), there was a trend (p = .07) in the direction of iPad subjects testing better on the online test (mean correct = 77%) compared with paper subjects (mean correct = 57%). Among patients (n = 55), iPad subjects had significantly higher test scores than standard paper consent subjects (mean correct = 75% vs 58%, p < .001). For all subjects, the total time spent reviewing the paper consent was 13.2 minutes, significantly less than the average of 22.7 minutes total on the three components to be reviewed using the iPad (introductory video, consent form, interactive quiz). Overall satisfaction and overall enjoyment slightly favored the interactive iPad presentation. This study demonstrates that combining an introductory video, standard consent language, and an interactive quiz on a tablet-based system improves comprehension of research study procedures and risks. [ABSTRACT FROM AUTHOR]
- Published
- 2013
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9. Ten simple rules for structuring papers.
- Author
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Mensh, Brett and Kording, Konrad
- Subjects
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AUTHORSHIP , *AUTHOR-reader relationships , *PARALLELISM (Linguistics) , *ABSTRACTING , *AUTHORS - Abstract
The article presents several rules for restructuring papers to avoid losing readers. Authors are instructed to focus their papers on a central contribution and to concentrate on the context-content-conclusion (C-C-C) scheme. They are also advised to optimize a paper's logical flow by avoiding zig-zag and using parallelism and to include complete story in the abstract.
- Published
- 2017
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10. BARBIE ON SOCIAL MEDIA The Success of a Campaign Beyond the Cinema and the Box Office.
- Author
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BUSTOS DÍAZ, JAVIER, PERELLÓ SOBREPERE, MARC, and MARTIN-VICARIO, LARA
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MARKETING , *SOCIAL media , *COMMUNICATION in marketing , *MARKETING channels , *SOCIAL network analysis , *SOCIAL impact , *MOTION picture premieres - Abstract
The success of the premiere of the film Barbie is undeniable in terms of box office and social impact; however, another of the aspects in which the film stands out is its impact in terms of communication and promotion. The aim of this paper is to analyse the impact that the official Barbie account had on social networks during the week of the premiere. To achieve this objective, a quantitative methodology based on the Fanpage Karma social network analysis tools was used. Among the main results, it is worth highlighting that TikTok emerges as the communication and marketing channel that generates the most engagement, to the detriment of Facebook and Twitter (X). [ABSTRACT FROM AUTHOR]
- Published
- 2024
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11. Desktop application for crypto 169 -protected voice communication.
- Author
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Ivanović, Stefan M., Marković, Marko R., Stanišić, Sava S., Živanović, Kristina R., and Kolašinac, Dimitrije S.
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CRYPTOCURRENCIES , *DIGITAL certificates , *DIGITAL signatures , *COMPUTER networks , *DIGITAL technology , *IDENTIFICATION - Abstract
Introduction/purpose: All data exchanged over the Internet as well as other computer networks should be considered exposed to various types of security threats. In light of this, the transmission of voice over applications that do not use any type of crypto-protection allows anyone to discern the content of communication. Since voice transmission requires as little delay as possible, various protocols are used to enable crypto protected real-time communication. This paper presents one solution in a desktop application variant. Methods: The essence in voice exchange systems as well as in other systems where real-time communication is necessary is the establishment of a crypto-protected session which is a virtual secure channel for communication to which only the communicating parties have access. Voice sessions in the application are established with the SIP (Session Initiation Protocol) protocol. The sessions are further protected using the ZRTP (Zimmerman Real-time Transport Protocol) protocol. FusionPBX was used as the SIP server (registrar) for testing purpouses. The application is developed in C++ language using the Qt framework. Results: The final version of the application demostrates that ZRTP and SIP protocols are well suited for establishing crypto protected voice communications with low delay. Conclusion: This solution provides cryptographic functions for data secrecy and the management of cryptographic keys. Improving the solution with digital signatures and certificates will result in additional cryptographic functions: data integrity and personal identification. With this improvement, this solution will be able to withstand modern security threats with low delay [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
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12. Assessment of Adverse Events in Protocols, Clinical Study Reports, and Published Papers of Trials of Orlistat: A Document Analysis.
- Author
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Schroll, Jeppe Bennekou, Penninga, Elisabeth I., and Gøtzsche, Peter C.
- Subjects
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ADVERSE health care events , *RESEARCH protocols , *ORLISTAT , *FREEDOM of information , *SYSTEMATIC reviews , *BIBLIOMETRICS , *NEWSLETTERS , *OBESITY , *ORGANIC compounds , *ANTIOBESITY agents , *TREATMENT effectiveness , *STANDARDS , *THERAPEUTICS - Abstract
Background: Little is known about how adverse events are summarised and reported in trials, as detailed information is usually considered confidential. We have acquired clinical study reports (CSRs) from the European Medicines Agency through the Freedom of Information Act. The CSRs describe the results of studies conducted as part of the application for marketing authorisation for the slimming pill orlistat. The purpose of this study was to study how adverse events were summarised and reported in study protocols, CSRs, and published papers of orlistat trials.Methods and Findings: We received the CSRs from seven randomised placebo controlled orlistat trials (4,225 participants) submitted by Roche. The CSRs consisted of 8,716 pages and included protocols. Two researchers independently extracted data on adverse events from protocols and CSRs. Corresponding published papers were identified on PubMed and adverse event data were extracted from this source as well. All three sources were compared. Individual adverse events from one trial were summed and compared to the totals in the summary report. None of the protocols or CSRs contained instructions for investigators on how to question participants about adverse events. In CSRs, gastrointestinal adverse events were only coded if the participant reported that they were "bothersome," a condition that was not specified in the protocol for two of the trials. Serious adverse events were assessed for relationship to the drug by the sponsor, and all adverse events were coded by the sponsor using a glossary that could be updated by the sponsor. The criteria for withdrawal due to adverse events were in one case related to efficacy (high fasting glucose led to withdrawal), which meant that one trial had more withdrawals due to adverse events in the placebo group. Finally, only between 3% and 33% of the total number of investigator-reported adverse events from the trials were reported in the publications because of post hoc filters, though six of seven papers stated that "all adverse events were recorded." For one trial, we identified an additional 1,318 adverse events that were not listed or mentioned in the CSR itself but could be identified through manually counting individual adverse events reported in an appendix. We discovered that the majority of patients had multiple episodes of the same adverse event that were only counted once, though this was not described in the CSRs. We also discovered that participants treated with orlistat experienced twice as many days with adverse events as participants treated with placebo (22.7 d versus 14.9 d, p-value < 0.0001, Student's t test). Furthermore, compared with the placebo group, adverse events in the orlistat group were more severe. None of this was stated in the CSR or in the published paper. Our analysis was restricted to one drug tested in the mid-1990s; our results might therefore not be applicable for newer drugs.Conclusions: In the orlistat trials, we identified important disparities in the reporting of adverse events between protocols, clinical study reports, and published papers. Reports of these trials seemed to have systematically understated adverse events. Based on these findings, systematic reviews of drugs might be improved by including protocols and CSRs in addition to published articles. [ABSTRACT FROM AUTHOR]- Published
- 2016
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13. AGRCNet: communicate by attentional graph relations in multi-agent reinforcement learning for traffic signal control.
- Author
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Ma, Tinghuai, Peng, Kexing, Rong, Huan, and Qian, Yurong
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TRAFFIC signs & signals , *TRAFFIC engineering , *TELECOMMUNICATION systems , *REINFORCEMENT learning , *MARL - Abstract
Traffic signal control (TSC) can be described as a multi-agent cooperative game. To realize cooperation, multi-agent reinforcement learning (MARL) is a significant approach, with communication being a core component. The large-scale traffic signals and the partially observable information in TSC pose a considerable challenge in finding the optimal joint control policy. This paper proposed a deep MARL model named attentional graph relations communications network (AGRCNet). Based on the Actor-Critic framework, AGRCNet designs a communication network to exchange observation information with agents to help obtain the optimal joint action, reducing the decision error caused by the partially observable condition. Specifically, through the communication network, the chain propagation of graph attention networks (GAT) and graph convolutional networks is used to expand the receptive domain of agents, improve communication efficiency and promote cooperative behavior. We simulate the traffic situation near the Nanjing Yangtze River Bridge in Simulation of Urban MObility. With a compound reward, our method performs best. Meanwhile, AGRCNet is applied to two abstract environments, and the results show that our approach can also adapt to dynamic agent relationships and is more efficient than comparison algorithms. [ABSTRACT FROM AUTHOR]
- Published
- 2023
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14. Occurrence mechanism and coping paths of accidents of highly aggregated tourist crowds based on system dynamics.
- Author
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Yin, Jie, Zheng, Xiang-min, and Tsaur, Ruey-Chyn
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SYSTEM dynamics , *CROWDS , *ACCIDENTS , *TOURISTS , *FILTER paper - Abstract
The safety of highly aggregated tourist crowds is a challenging and important issue. This paper not only provided a comprehensive analysis of the accidents of highly aggregated tourist crowds but also determined the occurrence mechanism and coping paths. Based on the analysis of multiple cases, we found that the variable status of highly aggregated tourist crowds was the result of the interaction of three main elements: multisource pressure, state mutations and management responses. A series of factors interact and result in accidents, and the lack of a management response or a low-quality management response is the root cause of such accidents. A high-quality management response is a basic safety precaution for highly aggregated tourist crowds. Therefore, forming a virtuous circle of multisource pressure, state mutations and management responses is an effective path for coping with accidents. [ABSTRACT FROM AUTHOR]
- Published
- 2019
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15. Navigating the tensions between ethics and effectiveness in development communications and marketing.
- Author
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Cameron, John David and Kwiecien, Olivia
- Subjects
- *
NONPROFIT sector , *NONGOVERNMENTAL organizations , *COMMUNICATION ethics , *ETHICS , *CORPORATE communications , *INTERNATIONAL communication - Abstract
This paper examines the ways that communications and marketing professionals with international development non-governmental organisations (NGOs) understand and navigate the tensions between ethical and effective communications about global poverty and development. The paper is based on interviews with 16 senior communications officers in Canadian NGOs and with six marketing firms that support the non-profit sector. The paper finds that most of the communications professionals we interviewed did not view their work from an ethical perspective. Based on these findings, the paper argues that a renewed debate about the ethical dimensions of representing global development and poverty is urgently needed. [ABSTRACT FROM AUTHOR]
- Published
- 2022
- Full Text
- View/download PDF
16. Prefiguring the Design of Freedom: An Informational Theory Approach to Socio-Political Cybernetics; Analysing the Messages in 2021 Colombian Uprisings.
- Author
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Osejo-Bucheli, Camilo
- Abstract
Origin: The research analysed the messages communicated during the uprisings in a city in Colombia during 2021. The objective of the study was to determine the organisational idea of the country prefigured by the protestors during the marches.The research uses participatory observation in an ethnographic method for data collection; for data analysis and reduction, it uses grounded theory; and for data analysis, it uses cybernetic communication modelling and the Viable Systems Model. During the six marches the researchers attended to, the study registered and analysed the messages contained in speeches, alternative media outlets, chants, signs, graffiti, and theatrical plays.It identifies the people´s demand for autonomy in the country, the emergence of new political identities, the use of telecommunications as a means for changing the state´s institutions, the use of art and culture in the country’s demonstrations, and the demand for the respect of human rights. The study analysed the findings using the socio-political cybernetics framework proposed by Stafford Beer.The article presents a novel approach to the study of the Colombian uprisings of 2021. The paper applies the socio-political cybernetic approach, which is uncommon in studies in cybernetics. It also proposes an extension to the cybernetic theory of communications.Method: The research analysed the messages communicated during the uprisings in a city in Colombia during 2021. The objective of the study was to determine the organisational idea of the country prefigured by the protestors during the marches.The research uses participatory observation in an ethnographic method for data collection; for data analysis and reduction, it uses grounded theory; and for data analysis, it uses cybernetic communication modelling and the Viable Systems Model. During the six marches the researchers attended to, the study registered and analysed the messages contained in speeches, alternative media outlets, chants, signs, graffiti, and theatrical plays.It identifies the people´s demand for autonomy in the country, the emergence of new political identities, the use of telecommunications as a means for changing the state´s institutions, the use of art and culture in the country’s demonstrations, and the demand for the respect of human rights. The study analysed the findings using the socio-political cybernetics framework proposed by Stafford Beer.The article presents a novel approach to the study of the Colombian uprisings of 2021. The paper applies the socio-political cybernetic approach, which is uncommon in studies in cybernetics. It also proposes an extension to the cybernetic theory of communications.Findings: The research analysed the messages communicated during the uprisings in a city in Colombia during 2021. The objective of the study was to determine the organisational idea of the country prefigured by the protestors during the marches.The research uses participatory observation in an ethnographic method for data collection; for data analysis and reduction, it uses grounded theory; and for data analysis, it uses cybernetic communication modelling and the Viable Systems Model. During the six marches the researchers attended to, the study registered and analysed the messages contained in speeches, alternative media outlets, chants, signs, graffiti, and theatrical plays.It identifies the people´s demand for autonomy in the country, the emergence of new political identities, the use of telecommunications as a means for changing the state´s institutions, the use of art and culture in the country’s demonstrations, and the demand for the respect of human rights. The study analysed the findings using the socio-political cybernetics framework proposed by Stafford Beer.The article presents a novel approach to the study of the Colombian uprisings of 2021. The paper applies the socio-political cybernetic approach, which is uncommon in studies in cybernetics. It also proposes an extension to the cybernetic theory of communications.Originality: The research analysed the messages communicated during the uprisings in a city in Colombia during 2021. The objective of the study was to determine the organisational idea of the country prefigured by the protestors during the marches.The research uses participatory observation in an ethnographic method for data collection; for data analysis and reduction, it uses grounded theory; and for data analysis, it uses cybernetic communication modelling and the Viable Systems Model. During the six marches the researchers attended to, the study registered and analysed the messages contained in speeches, alternative media outlets, chants, signs, graffiti, and theatrical plays.It identifies the people´s demand for autonomy in the country, the emergence of new political identities, the use of telecommunications as a means for changing the state´s institutions, the use of art and culture in the country’s demonstrations, and the demand for the respect of human rights. The study analysed the findings using the socio-political cybernetics framework proposed by Stafford Beer.The article presents a novel approach to the study of the Colombian uprisings of 2021. The paper applies the socio-political cybernetic approach, which is uncommon in studies in cybernetics. It also proposes an extension to the cybernetic theory of communications. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
17. ДРУШТВЕНО ЧИТАЊЕ КАО САВРЕМЕНА КОМУНИКАТИВНА ПРАКСА .
- Author
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Вученовић, Тамара
- Subjects
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DIGITAL communications , *READING , *DEFINITIONS - Abstract
Reading 2.0 and the Lonely Reader, the new concepts that will help us better understand the idea of social reading in contemporary media environments, are taken as a starting point for the research. The definitions of the term social reading are given and the importance of this term used in the paper is pointed out, as well as the communication aspect that is very important for understanding the digital context of the various activities related to the reading and books. Also, this paper presents the selected platforms and tools that enable the incorporation of technologies in the reading processes, sharing, analyzing, and recommending of books, as well as the recent trends in this area. In the final part of the paper, future trends and research in social reading are briefly pointed out. [ABSTRACT FROM AUTHOR]
- Published
- 2022
- Full Text
- View/download PDF
18. Social noise: the influence of observers on social media information behavior.
- Author
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Zimmerman, Tara
- Subjects
- *
INFORMATION-seeking behavior , *SOCIAL media , *SOCIAL influence , *CONFLICT management , *THEMATIC analysis - Abstract
Purpose: The purpose of this paper is to introduce the concept of social noise. Under the influence of social noise, a social media user may adjust information behavior based on external cues, attempting to present themselves in a more desirable way to increase their social capital. Design/methodology/approach: A qualitative study informed by an ethnographic approach was used to examine social media information behavior. Participants were observed using Facebook, followed by semi-structured interviews. Data analysis was theoretically grounded in thematic analysis but also adaptive to observations in the data. Findings: Four constructs of social noise were identified in the data. Identity curation emerged as the overarching consideration for individuals. The constructs cultural commitments and relationship management both had a strong presence within the data as well. The fourth construct, conflict management, was identified as social media users decided how to respond to individuals or information with which they did not agree. Originality/value: This study reveals that social media users' awareness of observation by others does impact their information behavior. Efforts to craft a personal reputation, build or maintain relationships, pursue important commitments and manage conflict all influence the observable information behavior of social media users. As a result, observable social media information behavior may not be an accurate reflection of an individual's true thoughts and beliefs. [ABSTRACT FROM AUTHOR]
- Published
- 2022
- Full Text
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19. 'South Kensington is practically as far away as Paris or Munich': the making of industrial collections in Edinburgh, Newcastle and Birmingham.
- Author
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Little, Kylea, McWilliams, Felicity, and Swinbank, Ellie
- Subjects
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SCIENCE museums , *MUSEUM studies , *COLLECTIONS , *NATIONAL museums , *INDUSTRIALIZATION - Abstract
The provocation within the heart of the Congruence Engine leads us to consider not only the connections between our industrial collections, but the differences which shine a light on the gaps that exist nationally as well as institutionally due to the unique ways in which those collections were built. Emerging out of discussions held at the project's launch conference, this paper will compare and contrast the foundation and development of the industrial collections held within our three institutions: National Museums Scotland (NMS), Tyne & Wear Archive & Museums (TWAM) and Birmingham Museums Trust (BMT). The dedicated industrial collections which now sit within these organisations were founded in three quite distinct contexts: the Industrial Museum of Scotland in Edinburgh in 1854, the Municipal Museum of Science and Industry in Newcastle in 1934, and Birmingham's Museum of Science & Industry in 1951. Beyond these founding moments, their deeper roots and ongoing development have been shaped by an array of events, individuals and organisations from the local to the international, including some they hold in common and some that are unique. In charting their stories, we will explore why our collections have acquired their particular strengths and weaknesses, and the implications of this for their contributions to a distributed national collection of science and industry. This will act as the foundation for further collaborative research throughout the project as we investigate how and why particular textiles, energy and communication stories can be explored within and between our collections. [ABSTRACT FROM AUTHOR]
- Published
- 2022
- Full Text
- View/download PDF
20. History of communications and the Congruence Engine: early thoughts and possibilities.
- Author
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Agar, Jon
- Subjects
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SCIENCE museums , *DIGITAL communications , *ENGINES , *NATIONAL museums , *MUSEUM studies , *POSSIBILITY - Abstract
Communications is one of three strands of research under the Congruence Engine project, and will follow the other two, Textiles and Energy, in trialling the application of digital methods to better connect and understand collections held in partner institutions. This paper begins with a discussion of definitions of 'communications' and an overview of historiography. Interviews conducted by the author with collaborators (in the Science Museum Group, National Museums of Scotland, BT Archives and Historic England) elicit insights into what the Communications strand of Congruence Engine might achieve, obstacles that might be encountered, research directions to pursue and historical questions to ask. Finally, six possible projects are described and discussed. [ABSTRACT FROM AUTHOR]
- Published
- 2022
- Full Text
- View/download PDF
21. Use of Polar Heliostats to Improve Levels of Natural Lighting inside Buildings with Little Access to Sunlight.
- Author
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Fernández-Ahumada, Luis Manuel, Osuna-Mérida, Maximiliano, López-Sánchez, Jesús, Gómez-Uceda, Francisco Javier, López-Luque, Rafael, and Varo-Martínez, Marta
- Subjects
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HELIOSTATS , *ENERGY consumption , *SUNSHINE , *SOLAR radiation , *SOLAR energy , *COMMERCIAL buildings , *WAREHOUSES , *DAYLIGHT - Abstract
The growing need to increase environmental and energy sustainability in buildings (housing, offices, warehouses, etc.) requires the use of solar radiation as a renewable source of energy that can help to lower carbon footprint, making buildings more efficient and thereby contributing to a more sustainable planet, while enhancing the health and wellbeing of its occupants. One of the technologies deployed in the use of solar energy in buildings is heliostats. In this context, this paper presents an analysis of the performance of a heliostat illuminator to improve illumination in a classroom at the Campus of Rabanales of the University of Cordoba (Spain). A design of a system in charge of monitoring and measuring daylighting variables using Arduino hardware technology and free software is shown. This equipment develops the communications, programming and collection of lighting data. In parallel, installation of an artificial lighting system complementary to the natural lighting system is implemented. Finally, an analysis of the impact of the proposed solution on the improvement of energy efficiency is presented. Specifically, it is estimated that up to 64% of savings in artificial lighting can be achieved in spaces with heliostatic illuminators compared to those without them. [ABSTRACT FROM AUTHOR]
- Published
- 2022
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22. NGOs and advocacy communications on sexual and reproductive health and rights: From the North to the South.
- Author
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Matos, Carolina
- Subjects
- *
REPRODUCTIVE health , *NONGOVERNMENTAL organizations , *REPRODUCTIVE rights , *WOMEN'S rights , *DISCOURSE analysis , *SOCIAL advocacy ,DEVELOPING countries - Abstract
Women in developing and developed countries can still suffer from constraints on their ability to exercise their reproductive rights, being subject to gendered norms and forms of control over their bodies and encountering various difficulties to accessing healthcare services. Sexual and reproductive health and rights (SRHR) thus continue to matter for the advancement of gender equality, whilst communications when strategically used can shape support for progressive policies. This project seeks to advance research on gender development and advocacy communications for social change. A core question asked here is how can communications be better used for advocacy on SRHR? Making use of a mixed-methods approach, this research engages with a sample of 52 feminist and health NGOs, located in both the North and the South. In-depth interviews with gender experts from the organizations were combined with a survey applied to the communication professionals, followed by content and discourse analysis of their institutional websites and social media engagement. This paper provides a condensed examination of the early research findings and core theoretical frameworks, arguing over the need to deconstruct discourses around SRHR under challenging times and concluding that NGOs need better communication strategies and practices in their advocacy communication efforts. [ABSTRACT FROM AUTHOR]
- Published
- 2022
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23. Mapping online hate: A scientometric analysis on research trends and hotspots in research on online hate.
- Author
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Waqas, Ahmed, Salminen, Joni, Jung, Soon-gyo, Almerekhi, Hind, and Jansen, Bernard J.
- Subjects
- *
MEDLINE , *INTIMATE partner violence , *TREND analysis , *HATE groups , *SCIENCE databases , *SOCIAL participation - Abstract
Internet and social media participation open doors to a plethora of positive opportunities for the general public. However, in addition to these positive aspects, digital technology also provides an effective medium for spreading hateful content in the form of cyberbullying, bigotry, hateful ideologies, and harassment of individuals and groups. This research aims to investigate the growing body of online hate research (OHR) by mapping general research indices, prevalent themes of research, research hotspots, and influential stakeholders such as organizations and contributing regions. For this, we use scientometric techniques and collect research papers from the Web of Science core database published through March 2019. We apply a predefined search strategy to retrieve peer-reviewed OHR and analyze the data using CiteSpace software by identifying influential papers, themes of research, and collaborating institutions. Our results show that higher-income countries contribute most to OHR, with Western countries accounting for most of the publications, funded by North American and European funding agencies. We also observed increased research activity post-2005, starting from more than 50 publications to more than 550 in 2018. This applies to a number of publications as well as citations. The hotbeds of OHR focus on cyberbullying, social media platforms, co-morbid mental disorders, and profiling of aggressors and victims. Moreover, we identified four main clusters of OHR: (1) Cyberbullying, (2) Sexual solicitation and intimate partner violence, (3) Deep learning and automation, and (4) Extremist and online hate groups, which highlight the cross-disciplinary and multifaceted nature of OHR as a field of research. The research has implications for researchers and policymakers engaged in OHR and its associated problems for individuals and society. [ABSTRACT FROM AUTHOR]
- Published
- 2019
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24. Process design and network shape evaluation of multi-target collaborative navigation.
- Author
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Liu, Rui, Greve, Klaus, Jiang, Nan, and Cui, Pengyu
- Subjects
- *
INFORMATION processing - Abstract
The spatial distribution of collaborative targets and the information collaboration process are two important factors affecting the efficiency of real-time collaborative navigation. Addressing these factors, this paper presents the following work. First, the collaborative communication process between navigation targets is designed and illustrated with an application example. Second, the feature and error condition of the spatial distribution of collaborative targets is analysed. Then, a method based on CGDOP (collaborative geometric dilution of precision) value is proposed for the evaluation of the actual spatial distribution conditions of collaborative targets. Finally, a simulated experiment is conducted to evaluate the collaborative navigation process and the collaboration effect of the collaborative navigation network in different spatial shapes. Overall, the results of this study optimised the observation and application efficiency of navigation data, and improved the stability and reliability of real-time navigation service through multi-target collaborative navigation. [ABSTRACT FROM AUTHOR]
- Published
- 2021
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25. A standardized citation metrics author database annotated for scientific field.
- Author
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Ioannidis, John P. A., Baas, Jeroen, Klavans, Richard, and Boyack, Kevin W.
- Subjects
- *
SCIENCE databases , *BIBLIOGRAPHIC databases , *SCIENTISTS , *SCIENCE & state , *CITATION analysis - Abstract
Citation metrics are widely used and misused. We have created a publicly available database of 100,000 top scientists that provides standardized information on citations, h-index, coauthorship-adjusted hm-index, citations to papers in different authorship positions, and a composite indicator. Separate data are shown for career-long and single-year impact. Metrics with and without self-citations and ratio of citations to citing papers are given. Scientists are classified into 22 scientific fields and 176 subfields. Field- and subfield-specific percentiles are also provided for all scientists who have published at least five papers. Career-long data are updated to end of 2017 and to end of 2018 for comparison. [ABSTRACT FROM AUTHOR]
- Published
- 2019
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26. Crowd-sourced cognitive mapping: A new way of displaying people’s cognitive perception of urban space.
- Author
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Jang, Kee Moon and Kim, Youngchul
- Subjects
- *
SPACE perception , *PUBLIC spaces , *GROUP identity , *SENSORY perception , *SOCIAL media - Abstract
By utilizing cognitive mapping and leveraging georeferenced text data, this paper aims to suggest a new visualization method that combines the advantages of both conventional and state-of-the-art research techniques to depict the collective identity of place in a single image. The study addressed two research questions: (1) Can crowd-sourced text data be utilized in representing place identity? (2) Can collective place identity be expressed in the form of a cognitive map? By confirming that text data gathered from social media effectively demonstrate people’s behaviors and perceptions related to places, we propose a novel method to create a visual representation of urban identity–a “crowd-sourced cognitive map”. In particular, to improve the conventional cognitive mapping method to depict the collective identity of a city, we draw cognitive maps of Bundang and Ilsan developed in the 1990s, as well as Songdo and Dongtan developed in the 2000s, just outside of the administrative boundaries of Seoul in Korea, through a computational method based on crowd-sourced opinions collected from social media. We open the possibility for the use of social media text data to capture the identity of cities and suggest a graphical image through which people without prior information could also easily apprehend the overall image of a city. The work in this paper is expected to provide a methodological technique for appropriate decision-making and the evaluation of urban identity to shape a more unique and imageable city. [ABSTRACT FROM AUTHOR]
- Published
- 2019
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27. Social network structure is predictive of health and wellness.
- Author
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Lin, Suwen, Faust, Louis, Robles-Granda, Pablo, Kajdanowicz, Tomasz, and Chawla, Nitesh V.
- Subjects
- *
SOCIAL networks , *SOCIAL structure , *HEALTH behavior , *SOCIAL sciences education , *HEALTH attitudes , *BIG data , *SMOKING cessation - Abstract
Social networks influence health-related behavior, such as obesity and smoking. While researchers have studied social networks as a driver for diffusion of influences and behavior, it is less understood how the structure or topology of the network, in itself, impacts an individual's health behavior and wellness state. In this paper, we investigate whether the structure or topology of a social network offers additional insight and predictability on an individual's health and wellness. We develop a method called the Network-Driven health predictor (NetCARE) that leverages features representative of social network structure. Using a large longitudinal data set of students enrolled in the NetHealth study at the University of Notre Dame, we show that the NetCARE method improves the overall prediction performance over the baseline models—that use demographics and physical attributes—by 38%, 65%, 55%, and 54% for the wellness states—stress, happiness, positive attitude, and self-assessed health—considered in this paper. [ABSTRACT FROM AUTHOR]
- Published
- 2019
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28. : Sorting biology preprints using social media and readership metrics.
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Abdill, Richard J. and Blekhman, Ran
- Subjects
- *
PREPRINTS , *LIFE sciences , *SOCIAL media , *SOCIAL networks - Abstract
Preprints have arrived. In increasing numbers, researchers across the life sciences are embracing the once-niche practice, shaking off decades of reluctance and posting hundreds of papers per week to preprint servers, sharing their findings with the community before embarking on the weary march through peer review. However, there are limited methods for individuals sifting through this avalanche of research to identify the preprints that are most relevant to their interests. Here, we describe , a website that indexes all preprints posted to , the largest preprint server in the life sciences, and allows users to filter and sort papers based on download metrics and Twitter activity over a variety of categories and time periods. In this work, we hope to make it easier for readers to find relevant research on bioRxiv and to improve the visibility of preprints currently being read and discussed online. [ABSTRACT FROM AUTHOR]
- Published
- 2019
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29. Augmenting geovisual analytics of social media data with heterogeneous information network mining—Cognitive plausibility assessment.
- Author
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Savelyev, Alexander and MacEachren, Alan M.
- Subjects
- *
SOCIAL media , *DATA mining , *COMMUNICATION , *BLOGS , *BACKCHANNELS (Social media) - Abstract
This paper investigates the feasibility, from a user perspective, of integrating a heterogeneous information network mining (HINM) technique into SensePlace3 (SP3), a web-based geovisual analytics environment. The core contribution of this paper is a user study that determines whether an analyst with minimal background can comprehend the network data modeling metaphors employed by the resulting system, whether they can employ said metaphors to explore spatial data, and whether they can interpret the results of such spatial analysis correctly. This study confirms that all of the above is, indeed, possible, and provides empirical evidence about the importance of a hands-on tutorial and a graphical approach to explaining data modeling metaphors in the successful adoption of advanced data mining techniques. Analysis of outcomes of data exploration by the study participants also demonstrates the kinds of insights that a visual interface to HINM can enable. A second contribution is a realistic case study that demonstrates that our HINM approach (made accessible through a visual interface that provides immediate visual feedback for user queries), produces a clear and a positive difference in the outcome of spatial analysis. Although this study does not aim to validate HINM as a data modeling approach (there is considerable evidence for this in existing literature), the results of the case study suggest that HINM holds promise in the (geo)visual analytics domain as well, particularly when integrated into geovisual analytics applications. A third contribution is a user study protocol that is based on and improves upon the current methodological state of the art. This protocol includes a hands-on tutorial and a set of realistic data analysis tasks. Detailed evaluation protocols are rare in geovisual analytics (and in visual analytics more broadly), with most studies reviewed in this paper failing to provide sufficient details for study replication or comparison work. [ABSTRACT FROM AUTHOR]
- Published
- 2018
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30. News coverage, digital activism, and geographical saliency: A case study of refugee camps and volunteered geographical information.
- Author
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Mahabir, Ron, Croitoru, Arie, Crooks, Andrew, Agouris, Peggy, and Stefanidis, Anthony
- Subjects
- *
REFUGEE camps , *GEOGRAPHIC information systems , *CYBER physical systems , *WEB 2.0 , *GEOSPATIAL data - Abstract
The last several decades have witnessed a shift in the way in which news is delivered and consumed by users. With the growth and advancements in mobile technologies, the Internet, and Web 2.0 technologies users are not only consumers of news, but also producers of online content. This has resulted in a novel and highly participatory cyber-physical news awareness ecosystem that fosters digital activism, in which volunteers contribute content to online communities. While studies have examined the various components of this news awareness ecosystem, little is still known about how news media coverage (and in particular digital media) impacts digital activism. In order to address this challenge and develop a greater understanding of it, this paper focuses on a specific form of digital activism, that of the production of digital geographical content through crowdsourcing efforts. Using refugee camps from around the world as a case study, we examine the relationship between news coverage (via Google news), search trends (via Google trends) and user edit contribution patterns in OpenStreetMap, a prominent geospatial data crowdsourcing platform. In addition, we compare and contrast these patterns with user edit patterns in Wikipedia, a well-known non-geospatial crowdsourcing platform. Using Google news and Google trends to derive a measure of thematic public awareness, our findings indicate that digital activism bursts tend to take place during periods of sustained build-up of public awareness deficit or surplus. These findings are in line with two prominent mass communication theories: agenda setting and corrective action, and suggest the emergence of a novel stimulus-awareness-activism framework in today’s participatory digital age. Moreover, these findings further complement existing research examining the motivational factors that drive users to contribute to online collaborative communities. This paper brings us one step closer to understanding the underlying mechanisms that drive digital activism in particular in the geospatial domain. [ABSTRACT FROM AUTHOR]
- Published
- 2018
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31. Tourism research from its inception to present day: Subject area, geography, and gender distributions.
- Author
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Kirilenko, Andrei P. and Stepchenkova, Svetlana
- Subjects
- *
DATA mining , *SEX distribution , *GEOGRAPHIC information systems , *SOCIAL network analysis , *POPULATION dynamics - Abstract
This paper uses text data mining to identify long-term developments in tourism academic research from the perspectives of thematic focus, geography, and gender of tourism authorship. Abstracts of papers published in the period of 1970–2017 in high-ranking tourist journals were extracted from the Scopus database and served as data source for the analysis. Fourteen subject areas were identified using the Latent Dirichlet Allocation (LDA) text mining approach. LDA integrated with GIS information allowed to obtain geography distribution and trends of scholarly output, while probabilistic methods of gender identification based on social network data mining were used to track gender dynamics with sufficient confidence. The findings indicate that, while all 14 topics have been prominent from the inception of tourism studies to the present day, the geography of scholarship has notably expanded and the share of female authorship has increased through time and currently almost equals that of male authorship. [ABSTRACT FROM AUTHOR]
- Published
- 2018
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32. A Prospective on Zelinsky's Hypothesis of the Mobility Transition.
- Author
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Cooke, Thomas J., Wright, Richard, and Ellis, Mark
- Subjects
- *
GEOGRAPHIC mobility , *EMIGRATION & immigration , *POPULATION geography , *INTERNAL migration , *FORECASTING - Abstract
Abstract: Wilbur Zelinsky's 1971 paper in Geographical Review entitled the “Hypothesis of the Mobility Transition” was both forward‐looking and offered innovative ideas regarding human geographic mobility. One of the most interesting aspects of the paper was a set of predictions for mobility in a “future superadvanced society”. Many of these predictions have now come to pass, including a general decline in international and internal migration and residential change, the increasing regulation of migration ‐ especially internally, and the possibility that the widespread adoption of information and communication technologies has impacted human geographic mobility. Hence, this essay looks at the mobility transition not as an obsolete frame of reference but as a prescient, pliable, and adaptable framework which not only informs the study of human geographic mobility today but also, perhaps, even into the future. [ABSTRACT FROM AUTHOR]
- Published
- 2018
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33. Reconstruction of the socio-semantic dynamics of political activist Twitter networks—Method and application to the 2017 French presidential election.
- Author
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Gaumont, Noé, Panahi, Maziyar, and Chavalarias, David
- Subjects
- *
PRESIDENTIAL elections , *ELECTIONS , *DATA analysis , *POLITICAL community - Abstract
Background: Digital spaces, and in particular social networking sites, are becoming increasingly present and influential in the functioning of our democracies. In this paper, we propose an integrated methodology for the data collection, the reconstruction, the analysis and the visualization of the development of a country’s political landscape from Twitter data. Method: The proposed method relies solely on the interactions between Twitter accounts and is independent of the characteristics of the shared contents such as the language of the tweets. We validate our methodology on a case study on the 2017 French presidential election (60 million Twitter exchanges between more than 2.4 million users) via two independent methods: the comparison between our automated political categorization and a human categorization based on the evaluation of a sample of 5000 profiles descriptions; the correspondence between the reconfigurations detected in the reconstructed political landscape and key political events reported in the media. This latter validation demonstrated the ability of our approach to accurately reflect the reconfigurations at play in the off-line political scene. Results: We built on this reconstruction to give insights into the opinion dynamics and the reconfigurations of political communities at play during a presidential election. First, we propose a quantitative description and analysis of the political engagement of members of political communities. Second, we analyze the impact of political communities on information diffusion and in particular on their role in the fake news phenomena. We measure a differential echo chamber effect on the different types of political news (fake news, debunks, standard news) caused by the community structure and emphasize the importance of addressing the meso-structures of political networks in understanding the fake news phenomena. Conclusions: Giving access to an intermediate level, between sociological surveys in the field and large statistical studies (such as those conducted by national or international organizations) we demonstrate that social networks data make it possible to qualify and quantify the activity of political communities in a multi-polar political environment; as well as their temporal evolution and reconfiguration, their structure, their alliance strategies and their semantic particularities during a presidential campaign through the analysis of their digital traces. We conclude this paper with a comment on the political and ethical implications of the use of social networks data in politics. We stress the importance of developing social macroscopes that will enable citizens to better understand how they collectively make society and propose as example the “Politoscope”, a macroscope that delivers some of our results in an interactive way. [ABSTRACT FROM AUTHOR]
- Published
- 2018
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34. The Participatory Panopticon and Human Rights: WITNESS' Experience Supporting Video Advocacy.
- Author
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Gregory, Sam
- Subjects
- *
VIDEOS , *MASS media , *HUMAN rights , *SOCIAL movements , *WEB 2.0 - Abstract
Video advocacy incorporates the tools of modern moving image media into campaigns for change in policy, practice or behavior. WITNESS (www.witness.org) has been one of the pioneers in this field - working with local human rights groups in over seventy countries to use video and online technologies to open the eyes of the world to human rights violations. The paper reflects on the lessons WITNESS has learned partnering to create advocacy impact around visual evidence, testimony and stories, and using 'smart narrowcasting' of video to target domestic and international institutions including governments and decision-makers, UN and regional commissions, the media, an internet-based global public and others. It considers how Web 2.0 functionality and the advent of pervasive video capture devices and distribution options influence the capability and capacity to use video in advocacy, and expand the field of potential participants in documentation and activism. It goes on to consider the broader implications of what has been described as the emerging 'participatory panopticon' where everyone is watching everyone else, and considers in this light a new project, the Hub (hub.witness.org), at WITNESS - an online participatory media channel for sharing, watching and action on human rights media. The paper also addresses emerging issues related to human dignity and informed consent raised by new forms of remixing and reappropriation, as well as broader participation in image-making, and consider the normative responses that it may be appropriate to foster. Finally, it consider what modes of organized advocacy and action will be effective in a world of ubiquitous video production and distribution, considering the possibilities of a renewed form of targeted advocacy as well as the opportunities of distributed and collaborative production and distribution to create a new network-centered video advocacy that will draw on an increasingly broad range of participants, not just passive viewers. ..PAT.-Unpublished Manuscript [ABSTRACT FROM AUTHOR]
- Published
- 2009
35. Task scheduling using edge computing system in smart city.
- Author
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Zheng, Xiao, Li, Mingchu, and Guo, Jun
- Subjects
- *
SMART cities , *EDGE computing , *COMPUTER systems , *CYBER physical systems , *HIGH performance computing , *CONFLICT management - Abstract
Summary: A smart city will become an inevitable trend of social development. It includes many Cyber Physical Systems (CPSs) that can be endowed with different levels of intelligence. With the combination of CPS and cloud computing, smart sensor cloud system becomes popular in many areas where the physical nodes can be shared with multiple users, which can obtain high performance computing. In view of this idea, this paper studies the specific application of smart city‐online task scheduling. We treat each task as a physical node, and the scheduling of multiple computing tasks is to achieve sustainable services. However, when a physical sensor node receives commands from multiple tasks simultaneously, namely, resource conflict management problem. This conflicting resource management problem leads to the failures of services. To solve the resource conflict problem, we propose an extended Hungarian algorithm based on edge computing, which can obtain smaller delay and achieve sustainable service. Edge computing can be viewed as a buffer and controller between CPS and the cloud and can build a sustainable service system by handling malicious attacks. The experimental results show that our proposed method can effectively reduce resource conflicts, improve resource utilization, and make services more sustainable. [ABSTRACT FROM AUTHOR]
- Published
- 2021
- Full Text
- View/download PDF
36. Disdaining the Media in the Post 9/11 World.
- Author
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Gronke, Paul and Cook, Timothy
- Subjects
- *
PRESS , *MASS media , *PUBLIC support , *PUBLIC opinion , *NEWSPAPERS - Abstract
In this paper, we use the public opinion during the post 9/11 period as a lens to examine extant theories about trust and confidence in institutions. We examine public confidence in these institutions leading up to the attacks, then trace changes in confidence for the six months following. [ABSTRACT FROM AUTHOR]
- Published
- 2002
37. The effect of subgroup homogeneity of efficacy on contribution in public good dilemmas.
- Author
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Yam, Paton Pak Chun, Ng, Gary Ting Tat, Au, Wing Tung, Tao, Lin, Lu, Su, Leung, Hildie, and Fung, Jane M. Y.
- Subjects
- *
PUBLIC goods , *HOMOGENEITY , *MEMBERSHIP , *ENDOWMENTS , *EXPERIMENTAL design - Abstract
This paper examines how to maximize contribution in public good dilemmas by arranging people into homogeneous or heterogeneous subgroups. Past studies on the effect of homogeneity of efficacy have exclusively manipulated group composition in their experimental designs, which might have imposed a limit on ecological validity because group membership may not be easily changed in reality. In this study, we maintained the same group composition but varied the subgroup composition. We developed a public good dilemmas paradigm in which participants were assigned to one of the four conditions (high- vs. low-efficacy; homogeneous vs. heterogeneous subgroup) to produce their endowments and then to decide how much to contribute. We found that individuals in homogeneous and heterogeneous subgroups produced a similar amount and proportion of contribution, which was due to the two mediating effects that counteracted each other, namely (a) perceived efficacy relative to subgroup and (b) expectation of contribution of other subgroup members. This paper demonstrates both the pros and cons of arranging people into homogeneous and heterogeneous subgroups of efficacy. [ABSTRACT FROM AUTHOR]
- Published
- 2018
- Full Text
- View/download PDF
38. Caveat emptor, computational social science: Large-scale missing data in a widely-published Reddit corpus.
- Author
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Gaffney, Devin and Matias, J. Nathan
- Subjects
- *
SOCIAL sciences , *INTERPERSONAL relations , *SOCIAL network analysis , *MACHINE learning , *BITTORRENT (Computer network protocol) , *WEB archives - Abstract
As researchers use computational methods to study complex social behaviors at scale, the validity of this computational social science depends on the integrity of the data. On July 2, 2015, Jason Baumgartner published a dataset advertised to include “every publicly available Reddit comment” which was quickly shared on Bittorrent and the Internet Archive. This data quickly became the basis of many academic papers on topics including machine learning, social behavior, politics, breaking news, and hate speech. We have discovered substantial gaps and limitations in this dataset which may contribute to bias in the findings of that research. In this paper, we document the dataset, substantial missing observations in the dataset, and the risks to research validity from those gaps. In summary, we identify strong risks to research that considers user histories or network analysis, moderate risks to research that compares counts of participation, and lesser risk to machine learning research that avoids making representative claims about behavior and participation on Reddit. [ABSTRACT FROM AUTHOR]
- Published
- 2018
- Full Text
- View/download PDF
39. Not in our Journals - Digital Media Technologies and the LGBTQI Community.
- Author
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Subramony, Deepak Prem
- Subjects
- *
DIGITAL media , *LGBTQ+ communities , *LGBTQ+ people , *MASS media , *SOCIAL media - Abstract
This position paper highlights the mainstream educational communications and technology (ECT) research and development community’s continued lack of interest towards issues located at the intersection of digital media technologies and LGBTQI stakeholders, providing evidence and commentary in this regard. The paper goes on to articulate a rationale for why our field needs to pay more attention to this increasingly visible and significant segment of the stakeholder population, basing its arguments on demographics, intersectionality, and systems thinking. Finally, the paper presents the following potential areas to explore in regard to digital media technologies and LGBTQI stakeholders: workplace/performance issues, cyberbullying, assisting at-risk learners, media for empowerment/emancipation, and identity construction within mediated spaces. [ABSTRACT FROM AUTHOR]
- Published
- 2018
- Full Text
- View/download PDF
40. Gestures for Picture Archiving and Communication Systems (PACS) operation in the operating room: Is there any standard?
- Author
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Madapana, Naveen, Gonzalez, Glebys, Rodgers, Richard, Zhang, Lingsong, and Wachs, Juan P.
- Subjects
- *
PICTURE archiving & communication systems , *GESTURE , *OPERATING rooms , *ELECTRONIC health records , *NEUROSURGERY - Abstract
Objective: Gestural interfaces allow accessing and manipulating Electronic Medical Records (EMR) in hospitals while keeping a complete sterile environment. Particularly, in the Operating Room (OR), these interfaces enable surgeons to browse Picture Archiving and Communication System (PACS) without the need of delegating functions to the surgical staff. Existing gesture based medical interfaces rely on a suboptimal and an arbitrary small set of gestures that are mapped to a few commands available in PACS software. The objective of this work is to discuss a method to determine the most suitable set of gestures based on surgeon’s acceptability. To achieve this goal, the paper introduces two key innovations: (a) a novel methodology to incorporate gestures’ semantic properties into the agreement analysis, and (b) a new agreement metric to determine the most suitable gesture set for a PACS. Materials and methods: Three neurosurgical diagnostic tasks were conducted by nine neurosurgeons. The set of commands and gesture lexicons were determined using a Wizard of Oz paradigm. The gestures were decomposed into a set of 55 semantic properties based on the motion trajectory, orientation and pose of the surgeons’ hands and their ground truth values were manually annotated. Finally, a new agreement metric was developed, using the known Jaccard similarity to measure consensus between users over a gesture set. Results: A set of 34 PACS commands were found to be a sufficient number of actions for PACS manipulation. In addition, it was found that there is a level of agreement of 0.29 among the surgeons over the gestures found. Two statistical tests including paired t-test and Mann Whitney Wilcoxon test were conducted between the proposed metric and the traditional agreement metric. It was found that the agreement values computed using the former metric are significantly higher (p < 0.001) for both tests. Conclusions: This study reveals that the level of agreement among surgeons over the best gestures for PACS operation is higher than the previously reported metric (0.29 vs 0.13). This observation is based on the fact that the agreement focuses on main features of the gestures rather than the gestures themselves. The level of agreement is not very high, yet indicates a majority preference, and is better than using gestures based on authoritarian or arbitrary approaches. The methods described in this paper provide a guiding framework for the design of future gesture based PACS systems for the OR. [ABSTRACT FROM AUTHOR]
- Published
- 2018
- Full Text
- View/download PDF
41. Academic information on Twitter: A user survey.
- Author
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Mohammadi, Ehsan, Thelwall, Mike, Kwasny, Mary, and Holmes, Kristi L.
- Subjects
- *
SOCIAL media , *INTERNET users , *ONLINE social networks , *MICROBLOGS - Abstract
Although counts of tweets citing academic papers are used as an informal indicator of interest, little is known about who tweets academic papers and who uses Twitter to find scholarly information. Without knowing this, it is difficult to draw useful conclusions from a publication being frequently tweeted. This study surveyed 1,912 users that have tweeted journal articles to ask about their scholarly-related Twitter uses. Almost half of the respondents (45%) did not work in academia, despite the sample probably being biased towards academics. Twitter was used most by people with a social science or humanities background. People tend to leverage social ties on Twitter to find information rather than searching for relevant tweets. Twitter is used in academia to acquire and share real-time information and to develop connections with others. Motivations for using Twitter vary by discipline, occupation, and employment sector, but not much by gender. These factors also influence the sharing of different types of academic information. This study provides evidence that Twitter plays a significant role in the discovery of scholarly information and cross-disciplinary knowledge spreading. Most importantly, the large numbers of non-academic users support the claims of those using tweet counts as evidence for the non-academic impacts of scholarly research. [ABSTRACT FROM AUTHOR]
- Published
- 2018
- Full Text
- View/download PDF
42. Potential travel cost saving in urban public-transport networks using smartphone guidance.
- Author
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Song, Cuiying, Guan, Wei, and Ma, Jihui
- Subjects
- *
PUBLIC transit , *TRAVEL costs , *DECISION making , *MULTIAGENT systems , *TRAVEL time (Traffic engineering) - Abstract
Public transport (PT) is a key element in most major cities around the world. With the development of smartphones, available journey planning information is becoming an integral part of the PT system. Each traveler has specific preferences when undertaking a trip, and these preferences can also be reflected on the smartphone. This paper considers transit assignment in urban public-transport networks in which the passengers receive smartphone-based information containing elements that might influence the travel decisions in relation to line loads, as well as passenger benefits, and the paper discusses the transition from the current widespread choosing approach to a personalized decision-making approach based on smartphone information. The approach associated with smartphone guidance that considers passengers’ preference on travel time, waiting time and transfer is proposed in the process of obtaining his/her preferred route from the potential travel routes generated by the Deep First Search (DFS) method. Two other approaches, based on the scenarios reflecting reality, include passengers with access to no real time information, and passengers that only have access to the arrival time at the platform are used as comparisons. For illustration, the same network proposed by Spiess and Florian is utilized on the experiments in an agent-based model. Two experiments are conducted respectively according to whether each passenger’s choosing method is consistent. As expected, the results in the first experiment showed that the travel for consistent passengers with smartphone guidance was clearly shorter and that it can reduce travel time exceeding 15% and weighted cost exceeding 20%, and the average saved time approximated 3.88 minutes per passenger. The second experiment presented that travel cost, as well as cost savings, gradually decreased by employing smartphone guidance, and the maximum cost savings accounted for 14.2% of the total weighted cost. [ABSTRACT FROM AUTHOR]
- Published
- 2018
- Full Text
- View/download PDF
43. Shilling attack detection for recommender systems based on credibility of group users and rating time series.
- Author
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Zhou, Wei, Wen, Junhao, Qu, Qiang, Zeng, Jun, and Cheng, Tian
- Subjects
- *
SHILLING , *TRUTHFULNESS & falsehood , *TIME series analysis , *SUSTAINABILITY , *PREDICTION models - Abstract
Recommender systems are vulnerable to shilling attacks. Forged user-generated content data, such as user ratings and reviews, are used by attackers to manipulate recommendation rankings. Shilling attack detection in recommender systems is of great significance to maintain the fairness and sustainability of recommender systems. The current studies have problems in terms of the poor universality of algorithms, difficulty in selection of user profile attributes, and lack of an optimization mechanism. In this paper, a shilling behaviour detection structure based on abnormal group user findings and rating time series analysis is proposed. This paper adds to the current understanding in the field by studying the credibility evaluation model in-depth based on the rating prediction model to derive proximity-based predictions. A method for detecting suspicious ratings based on suspicious time windows and target item analysis is proposed. Suspicious rating time segments are determined by constructing a time series, and data streams of the rating items are examined and suspicious rating segments are checked. To analyse features of shilling attacks by a group user’s credibility, an abnormal group user discovery method based on time series and time window is proposed. Standard testing datasets are used to verify the effect of the proposed method. [ABSTRACT FROM AUTHOR]
- Published
- 2018
- Full Text
- View/download PDF
44. E-mail communication patterns and job burnout.
- Author
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Estévez-Mujica, Claudia P. and Quintane, Eric
- Subjects
- *
PSYCHOLOGICAL burnout , *COMMUNICATION , *EMAIL , *PSYCHOLOGICAL disengagement , *EMPLOYMENT - Abstract
A considerable body of research has documented the negative effects of job burnout on employees and their organizations, emphasizing the importance of the identification of early signs of the phenomenon for the purposes of prevention and intervention. However, such timely identification is difficult due to the time and cost of assessing the burnout levels of all employees in an organization using established scales. In this paper, we propose an innovative way to identify employees at risk of job burnout by analyzing their e-mail communication patterns. Building on the Job Demands–Resources model, we theorize about the relationship between e-mail communication patterns and levels of employee exhaustion and disengagement (two dimensions of burnout). We analyzed 52,190 e-mails exchanged between 57 employees of a medium sized R&D company over a five-month period. We then related these employees’ communication patterns to their levels of burnout, collected using an established scale (the OLBI–Oldenburg Burnout Inventory). Our results provide support for the overall proposition of the paper, that e-mail communications can be used to identify individuals at risk of job burnout. Our models explain up to 34% of the variance of burnout and up to 37% and 19% respectively of the variance of exhaustion and disengagement. They also successfully distinguish between employees with a higher risk of burnout and those with lower levels of risk (F1 score of 84% with recall of 100% and 73% precision). We discuss the implications of our results and present suggestions for future research. [ABSTRACT FROM AUTHOR]
- Published
- 2018
- Full Text
- View/download PDF
45. Soft Power Rich, Public Diplomacy Poor: An Assessment of Taiwan's External Communications.
- Author
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Rawnsley, Gary
- Subjects
- *
POWER (Social sciences) , *DIPLOMACY , *INTERNATIONAL relations ,TAIWANESE politics & government, 1975- ,TAIWAN. Government Information Office ,TAIWAN. Ministry of Foreign Affairs - Abstract
Accepting that Taiwan has accumulated “soft power” since the introduction of democratic reforms in the late 1980s, this paper assesses Taiwan's external communications during Ma Ying-jeou's presidency and how its soft power resources have been exercised. Demonstrating the strategic turn from political warfare to public and cultural diplomacy, the paper begins with the premise that the priority must be to increase familiarity with Taiwan among foreign publics. It then argues that any assessment of external communications in the Ma administration must consider the impact of two key decisions: first, the dissolution of the Government Information Office and the transfer of its responsibilities for international communications to the Ministry of Foreign Affairs and a new Ministry of Culture, and second, the priority given to cultural themes in Taiwan's external communications. [ABSTRACT FROM PUBLISHER]
- Published
- 2017
- Full Text
- View/download PDF
46. Communication Characteristics of Faulted Overhead High Voltage Power Lines at Low Radio Frequencies.
- Author
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Suljanović, Nermin, Mujčić, Aljo, and Zajc, Matej
- Subjects
- *
ELECTRIC lines , *RADIO frequency , *TELECOMMUNICATION systems , *ELECTROMAGNETIC waves , *SIMULATION methods & models - Abstract
This paper derives a model of high-voltage overhead power line under fault conditions at low radio frequencies. The derived model is essential for design of communication systems to reliably transfer information over high voltage power lines. In addition, the model can also benefit advanced systems for power-line fault detection and classification exploiting the phenomenon of changed conditions on faulted power line, resulting in change of low radio frequency signal propagation. The methodology used in the paper is based on the multiconductor system analysis and propagation of electromagnetic waves over the power lines. The model for the high voltage power line under normal operation is validated using actual measurements obtained on 400 kV power line. The proposed model of faulted power lines extends the validated power-line model under normal operation. Simulation results are provided for typical power line faults and typical fault locations. Results clearly indicate sensitivity of power-line frequency response on different fault types. [ABSTRACT FROM AUTHOR]
- Published
- 2017
- Full Text
- View/download PDF
47. Women are underrepresented in computational biology: An analysis of the scholarly literature in biology, computer science and computational biology.
- Author
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Bonham, Kevin S. and Stefan, Melanie I.
- Subjects
- *
STEM education , *COMPUTATIONAL biology , *BIBLIOMETRICS , *SCIENCE publishing , *SCIENCE & state - Abstract
While women are generally underrepresented in STEM fields, there are noticeable differences between fields. For instance, the gender ratio in biology is more balanced than in computer science. We were interested in how this difference is reflected in the interdisciplinary field of computational/quantitative biology. To this end, we examined the proportion of female authors in publications from the PubMed and arXiv databases. There are fewer female authors on research papers in computational biology, as compared to biology in general. This is true across authorship position, year, and journal impact factor. A comparison with arXiv shows that quantitative biology papers have a higher ratio of female authors than computer science papers, placing computational biology in between its two parent fields in terms of gender representation. Both in biology and in computational biology, a female last author increases the probability of other authors on the paper being female, pointing to a potential role of female PIs in influencing the gender balance. [ABSTRACT FROM AUTHOR]
- Published
- 2017
- Full Text
- View/download PDF
48. HUMAN CAPITAL AS A TOOL FOR PREDICTING DEVELOPMENT OF TRANSPORT AND COMMUNICATIONS SECTOR: THE CZECH REPUBLIC PERSPECTIVE.
- Author
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Gottwald, Dalibor, Svadlenka, Libor, Lejskova, Pavla, and Pavlisova, Hana
- Subjects
- *
HUMAN capital , *HIGH school students , *SUSTAINABLE development , *HIGH school graduates , *ANALYSIS of variance - Abstract
Human capital as a part of intellectual capital has crucial impact on the overall development of all sectors of national economy. This trend can also be confirmed by the growing number of academic papers dealing with the issue. This paper presents results of a questionnaire survey that investigated the human capital in terms of selected motivational factors and employability prospects as seen by students of high schools programs related to transport and communications. The main objective was to get an insight into the current situation in the sector and its attractiveness as seen by potential future employees. The questionnaire survey was carried out in April 2016 and its respondents were future high school graduates, who can either continue to study transport and communications at university or enter the job market and search for a job in the sector straight away. Results obtained from a series of statistical tests using the Two-way ANOVA method can serve both companies and educational institutions as a basis for implementation of measures that would guarantee sustainable development of human resources in this field. [ABSTRACT FROM AUTHOR]
- Published
- 2017
- Full Text
- View/download PDF
49. Improved artificial bee colony algorithm for vehicle routing problem with time windows.
- Author
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Yao, Baozhen, Yan, Qianqian, Zhang, Mengjie, and Yang, Yunong
- Subjects
- *
BEES algorithm , *VEHICLE routing problem , *APPLIED mathematics , *PROBLEM solving , *TASK performance - Abstract
This paper investigates a well-known complex combinatorial problem known as the vehicle routing problem with time windows (VRPTW). Unlike the standard vehicle routing problem, each customer in the VRPTW is served within a given time constraint. This paper solves the VRPTW using an improved artificial bee colony (IABC) algorithm. The performance of this algorithm is improved by a local optimization based on a crossover operation and a scanning strategy. Finally, the effectiveness of the IABC is evaluated on some well-known benchmarks. The results demonstrate the power of IABC algorithm in solving the VRPTW. [ABSTRACT FROM AUTHOR]
- Published
- 2017
- Full Text
- View/download PDF
50. Parsimonious data: How a single Facebook like predicts voting behavior in multiparty systems.
- Author
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Kristensen, Jakob Bæk, Albrechtsen, Thomas, Dahl-Nielsen, Emil, Jensen, Michael, Skovrind, Magnus, and Bornakke, Tobias
- Subjects
- *
PARSIMONIOUS models , *SOCIAL media , *POPULATION , *POLITICAL science - Abstract
This study shows how liking politicians’ public Facebook posts can be used as an accurate measure for predicting present-day voter intention in a multiparty system. We highlight that a few, but selective digital traces produce prediction accuracies that are on par or even greater than most current approaches based upon bigger and broader datasets. Combining the online and offline, we connect a subsample of surveyed respondents to their public Facebook activity and apply machine learning classifiers to explore the link between their political liking behaviour and actual voting intention. Through this work, we show that even a single selective Facebook like can reveal as much about political voter intention as hundreds of heterogeneous likes. Further, by including the entire political like history of the respondents, our model reaches prediction accuracies above previous multiparty studies (60–70%). The main contribution of this paper is to show how public like-activity on Facebook allows political profiling of individual users in a multiparty system with accuracies above previous studies. Beside increased accuracies, the paper shows how such parsimonious measures allows us to generalize our findings to the entire population of a country and even across national borders, to other political multiparty systems. The approach in this study relies on data that are publicly available, and the simple setup we propose can with some limitations, be generalized to millions of users in other multiparty systems. [ABSTRACT FROM AUTHOR]
- Published
- 2017
- Full Text
- View/download PDF
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