1,721,092 research outputs found
Communication Technologies for Vehicles: Third International Workshop, Nets4Cars/Nets4Trains 2011 Oberpfaffenhofen, Germany, March 23-24, 2011 Proceedings
No full textThe Communication Technologies for Vehicles workshop series provides an international forum on latest technologies and research in the field of intra- and inter-vehicle communications in which to present original research results in all areas relating to communication protocols and standards, mobility and traffic models, experimental and field operational testing, and performance analysis
The impact of culture and religion on financing decisions: Moderating role of CSR
No full textThe corporate social responsibility (CSR) plays a vital role in enhancing culture and religious activities which are critical factors of firms' financing decisions. This study investigates the moderating role of CSR on the relationship of culture, religion and financing decisions in Asian emerging economies. Findings suggest that predominant religion as well as cultural traits have a substantial bearing on the proportion of a firm's capital structure. Cultural dimensions such as power distance and uncertainty avoidance have negative while individualism has positive effect on firms' capital structure. Further, the firms operating in Islamic religion countries have less debt ratios as compared to the firms operating in Christianity and Hinduism that rely more on debt financing. CSR negatively moderates the relationship of culture, religion and firms' financing decisions. Capital structure disparities between enterprises with distinct country-of-origin cultures and religions should be better understood to have the optimal level of financing
LocPriS: A Security and Privacy Preserving Location Based Services Development Framework
Full text linkWith the ever increasing pervasiveness of devices with functionality to provide location based services comes the increased importance and reliance upon those services to provide user privacy and security. Many techniques to facilitate privacy and security in mobile and fixed networks have been developed, but surveys of user’s show that this area still has a lot of work left to do to satisfy privacy fears and help developers of such services to choose the best techniques to use. In this paper we propose a security and privacy preserving location based services development framework. The framework will allow for future development, visualisation, comparison and analysis of location based services that preserve security and privacy in order to improve user confidence in such technologies
Intelligent Mobility Systems : Some Socio-technical Challenges and Opportunities
Full text linkAnalysis of socio-technical challenges and opportunities around contemporary mobilities suggests new interpretations and visions for intelligent transport systems. Multiple forms of intelligence are required (but not easily compatible), transport is too narrow a term, and innovation results in new sociotechnical systems. An exploration of cumulative, collective and collaborative aspects of mobility systems, allows us to sketch challenges and opportunities in relation to practices of collaboration, communication and coordination, literacies for creativity, comfort and control, citizenship and (lack of) a sense of crisis, concluding with a discussion of methodological implications
An analysis and metric of reusable data licensing practices for biomedical resources
No full textData are the foundation of science, and there is an increasing focus on how data can be reused and enhanced to drive scientific discoveries. However, most seemingly “open data” do not provide legal permissions for reuse and redistribution. The inability to integrate and redistribute our collective data resources blocks innovation and stymies the creation of life-improving diagnostic and drug selection tools. To help the biomedical research and research support communities (e.g. libraries, funders, repositories, etc.) understand and navigate the data licensing landscape, the (Re)usable Data Project (RDP) (http://reusabledata.org) assesses the licensing characteristics of data resources and how licensing behaviors impact reuse. We have created a ruleset to determine the reusability of data resources and have applied it to 56 scientific data resources (e.g. databases) to date. The results show significant reuse and interoperability barriers. Inspired by game-changing projects like Creative Commons, the Wikipedia Foundation, and the Free Software movement, we hope to engage the scientific community in the discussion regarding the legal use and reuse of scientific data, including the balance of openness and how to create sustainable data resources in an increasingly competitive environment.</div
Communication Technologies for Vehicles
No full textThe Communication Technologies for Vehicles Workshop series provides an international forum on the latest technologies and research in the field of intra- and inter-vehicles communications and is or ganized annually to present original research results in all areas related to physical layer, communication protocols and standards, mobility and traffic models, experimental and field operational testing, and performance analysis
Enhanced photocatalytic activity in Mn-doped multiferroic BiFeO3
No full textEnhancing the performance of multiferroic BiFeO3 in different applications via Mn doping has a long history. However, the underlying mechanisms are still not understood. Here we study the contribution of multiple factors amplifying the photocatalytic activity of Mn-doped BiFeO3 towards rhodamine B degradation. The structural, optical, functional, and photocatalytic properties of BiFeO3 were found to be maximized upon 5 mol% Mn doping, also yielding enhanced photocatalytic activity. This level of doping optimized the lattice structure while maintaining phase purity, shifting the absorption edge to the near infra-red region, narrowing the bandgap energy, increasing the lifetime of photogenerated charges and surface photovoltages by a factor of two, and enhancing the spontaneous polarization to efficiently drive the photogenerated charges. We investigated the relationship between the enhanced PC activity and the structural, optical, and functional properties. The higher photocatalytic activity of Mn-doped BiFeO3 was attributed to the synergistic effect of (1) enhanced band bending on the surface as a result of internal screening of charges and (2) formation of inter-band energy levels while shifting the energy bands close to each other. Our results provide a unique opportunity for designing BiFeO3-based photocatalysts for applications in energy conversion and environmental remediation
Enhancing big data in the social sciences with crowdsourcing: Data augmentation practices, techniques, and opportunities.
Full text linkProponents of big data claim it will fuel a social research revolution, but skeptics challenge its reliability and decontextualization. The largest subset of big data is not designed for social research. Data augmentation-systematic assessment of measurement against known quantities and expansion of extant data with new information-is an important tool to maximize such data's validity and research value. Using trained research assistants or specialized algorithms are common approaches to augmentation but may not scale to big data or appease skeptics. We consider a third alternative: data augmentation with online crowdsourcing. Three empirical cases illustrate strengths and limitations of crowdsourcing, using Amazon Mechanical Turk to verify automated coding, link online databases, and gather data on online resources. Using these, we develop best practice guidelines and a reporting template to enhance reproducibility. Carefully designed, correctly applied, and rigorously documented crowdsourcing help address concerns about big data's usefulness for social research
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