215,026 research outputs found
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Demography of obscured and unobscured AGN: prospects for a Wide Field X-ray Telescope
No full textWe discuss some of the main open issues in the evolution of Active Galactic Nuclei which can be solved by the sensitive, wide area surveys to be performed by the proposed Wide Field X-ray Telescope mission
Discovering statistics using R / Andy Field, Jeremy Miles, Zoë Field.
No full texteconomic&political bookfair2016Includes bibliographical references (p. 941-947) and index.xxxiv, 957 p. :The R version of Andy Field's hugely popular Discovering Statistics Using SPSS takes students on a journey of statistical discovery using the freeware R. Like its sister textbook, Discovering Statistics Using R is written in an irreverent style and follows the same ground-breaking structure and pedagogical approach. The core material is enhanced by a cast of characters to help the reader on their way, hundreds of examples, self-assessment tests to consolidate knowledge, and additional website material for those wanting to learn more
Scientific and Business Cooperation in the Field of R&D: Researchers - Leaders Survey, May - July, 2017
No full textThe purpose of the study: to find out the opinion of researchers - managers about the obstacles to cooperation between science and business in the field of research and development and the factors that promote it.
Major investigated questions: respondents were asked if they had held a management position in the last 5 years. Respondents were asked about their responsibilities and their experience of working with commercial enterprises in R&D. It was stated that in the last 5 years there were several projects with a unit or team of researchers. They were asked when they last participated in a joint R&D project (purchasing or selling R&D services) with commercial enterprises. They were asked if they would like to undertake joint projects and what the reasons were. Those who have not conducted joint R&D projects were asked to indicate the reasons why they have not conducted them with business enterprises so far, and those who do not want to do so - why they do not want to participate in joint projects. They were asked what would encourage them to carry out joint R&D projects with commercial enterprises. Staff were asked why they participate in joint R&D projects with commercial enterprises and the means by which they are carried out. After listing the intermediaries, they were asked to indicate which of them are involved in joint R&D projects with business enterprises. Respondents were asked to answer the general obstacles to carrying out projects with companies and to indicate whether or not the managed unit (research team) had carried out publicly funded R&D projects with companies during the period 2007-2013. It was asked about the main administrative obstacles to the smooth running of publicly funded R&D activities. Furthermore, it was clarified whether the respondents are satisfied with the results of R&D projects with companies so far and how they assess the relationship between the efforts made so far in R&D projects with companies and the benefits. Respondents were asked whether they intend to carry out R&D projects jointly with companies in the future and to what extent they are likely to carry out joint R&D projects with former and / or existing partners (companies) in the future.
Socio-demographic characteristics: age, gender, which department is headed, how long is the head of the department, number of subordinates, time spent on activities, main field of science in which R&D is conducted, work in business after graduation, county, institution, type of leadership.
This survey was conducted at the initiative of the Research and Higher Education Monitoring and Analysis Centre (MOSTA). On January 1, 2019, MOSTA was reorganized into the Government Strategic Analysis Center (STRATA)
Electromagnetic scattering from random media / Timothy R. Field.
No full textengineering bookfair2015Includes bibliographical references (p. 174-180) and index.xiii, 184 p. :The book develops the dynamical theory of scattering from random media from first principles. Its key findings are to characterize the time evolution of the scattered field in terms of stochastic differential equations, and to illustrate this framework in simulation and experimental data analysis
Scan and paint: theory and practice of a sound field visualization method
No full textSound visualization techniques have played a key role in the development of acoustics throughout history. The development of measurement apparatus and techniques for displaying sound and vibration phenomena has provided excellent tools for building understanding about specific problems. Traditional methods, such as step-by-step measurements or simultaneous multichannel systems, have a strong tradeoff between time requirements, flexibility, and cost. However, if the sound field can be assumed time stationary, scanning methods allow us to assess variations across space with a single transducer, as long as the position of the sensor is known. The proposed technique, Scan and Paint, is based on the acquisition of sound pressure and particle velocity by manually moving a P-U probe (pressure-particle velocity sensors) across a sound field whilst filming the event with a camera. The sensor position is extracted by applying automatic color tracking to each frame of the recorded video. It is then possible to visualize sound variations across the space in terms of sound pressure, particle velocity, or acoustic intensity. In this paper, not only the theoretical foundations of the method, but also its practical applications are explored such as scanning transfer path analysis, source radiation characterization, operational deflection shapes, virtual phased arrays, material characterization, and acoustic intensity vector field mapping
Combined effect of electric field and surface modification on pool boiling of R-123
No full textThis thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel University.The effect of surface modification and high intensity electric field (uniform and non – uniform) acting separately or in combination on pool boiling of R-123 is presented in this thesis. The effect of surface modification was investigated on saturated pool boiling of R-123 for five horizontal copper surfaces modified by different treatments, namely: an emery polished surface, a fine sandblasted surface, a rough sandblasted surface, an electron beam (EB) enhanced surface and a sintered surface. Each 40 mm diameter heating surface formed the upper face of an oxygen-free copper block, electrically heated by embedded cartridge heaters. The experiments were performed from the convective heat transfer regime to the critical heat flux, with both increasing and decreasing heat flux, at 1.01 bar, and additionally at 2 bar and 4 bar for the emery polished surface. Significant enhancement of heat transfer with increasing surface modification was demonstrated, particularly for the EB enhanced and sintered surfaces. The emery polished and sandblasted surface results are compared with nucleate boiling correlations and other published data. The effect of uniform and non-uniform electric fields on saturated pool boiling of R-123 at 1.01 bar pressure was also examined. This method of heat transfer enhancement is known as electrohydrodynamic abbreviated as EHD-enhancement. A high voltage potential was applied at the electrode located above the heating surface, which was earthed. The voltage was varied from 0 to 30 kV. The uniform electric field was provided through a 40 mm diameter circular electrode of stainless steel 304 wire mesh having an aperture of 5.1 mm, while the non-uniform electric field was obtained by using a 40 mm diameter circular rod electrode with rods 5 and 8 mm apart. The effect of uniform electric field was investigated using all five modified surfaces, i.e. emery polished, fine sandblasted, rough sandblasted, EB enhanced and sintered surfaces, while non – uniform electric field was tested using the emery polished, fine sandblasted, EB enhanced and sintered surfaces. The effect of pressure on EHD enhancement was also examined using emery polished surface at saturation pressure of 2 and 4 bars while the electric field was fix at 20 kV corresponding to 2 MV/m. Further, the bubble dynamics is presented for the emery polished surface obtained using a high-speed high – resolution camera.The Government of Pakista
Scientific and Business Cooperation in the Field of R&D: Researchers Survey, May - July, 2017
No full textThe purpose of the study: to find out researchers' views on the barriers to science-business collaboration in R&D and the factors that promote it.
Major investigated questions: respondents were asked whether they had been involved in joint R&D projects with companies carried out by their institution in the last 5 years. It was clarified whether respondent is individually involved in joint R&D projects with companies, not through research and study institutions, and has participated in several projects in the last 5 years. They were asked when they last participated in a joint R&D project with companies. They were asked whether they would like to carry out joint projects and what the reasons were for doing so. If they have not carried out joint R&D projects, they were asked about the reasons why they have not carried them out so far. The collaborative partners were asked why they participate in joint R&D projects with commercial enterprises and what common obstacles the respondents encounter in carrying out projects with commercial enterprises. It was explained that they have participated in joint R&D projects with business enterprises funded by the public sector in the period 2007-2013 or later. The survey further clarified whether the respondents are satisfied with the past results of R&D projects with business enterprises and how they evaluate the relationship between the past efforts in such projects and the benefits. Respondents were asked how they have benefited from joint R&D projects with companies. They were asked whether they intend to carry out R&D projects jointly with companies in the future and to what extent they expect to carry them out with former and/or existing partners (companies) in the future.
Socio-demographic characteristics: age, gender, which unit head is the direct supervisor, how long has respondent worked in the unit, how many employees work in the unit, time spent on activities, main field of research, R&D, next ranking (occupied) leadership positions, county, institution in the company or business enterprise.
This survey was conducted at the initiative of the Research and Higher Education Monitoring and Analysis Centre (MOSTA). On January 1, 2019, MOSTA was reorganized into the Government Strategic Analysis Center (STRATA)
Dispelling the Myths Behind First-author Citation Counts
No full textWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
Gamify your field studies for learning about your learners
No full textTERENCE is an FP7 ICT European project that developed a technology enhanced learning system for supporting its learners, who are primary school children, and their educators. In the course of the project, we run field studies with a large number of learners for analysing the context of use of the system. This paper explains why project constraints triggered the gamification of the field studies, as well as how the field studies were conducted. This paper ends by rummaging over the pros and contras of gamifying field studies as in TERENCE. © Springer International Publishing Switzerland 2014
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