305,899 research outputs found
Ground effect aerodynamics research on racing cars
No full textInverted wings and diffusers are aerodynamic components typically employed on modern racing cars to generate downforce and thus improve the handling characters of the car. They are among the most efficient aerodynamic components. Recent studies at the University of Southampton have cast light on complex flow regimes associated with those force generating components and governing physics
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
Additional data on affective rating of audio and video clips using the EmojiGrid
No full textAddtional data files with:
A. Toet, & J.B.F. van Erp. 2020. Affective rating of audio and video clips using the EmojiGrid. F1000Research, 9 (970) https://doi.org/10.12688/f1000research.25088.1.
The file sound_results.xlsx contains the SAM and EmojiGrid valence and arousal ratings for selected stimuli from the IADS-E database by Yang et al. (2018).
The file video_results.xlsx contains the SAM and EmojiGrid valence and arousal ratings for video clips from Aguado et al. (2018
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
Author, publisher and bookseller : a tripartite synergy in Nigerian book industry
No full textThis work is about the roles of Author, Publisher and Bookseller in Book development in
Nigeria. The paper started by delving into the history of Book Publishing in Nigeria after
which it proceeded by defining who an author, a publisher, and a bookseller is and
expatiated on the indispensable roles of these key actors in Nigerian Book Industry and in
the emerging Information Society. Furthermore, the various constraints to book
development were identified while the paper advised on how the Book Industry can be
further promoted in Nigeria. However, the paper concluded and made recommendations
on how the Book sector can help in enhancing scholarship in the country
Laser Interference Structuring Of A-gen For The Production Of Optical Diffraction Gratings
No full textIn this work, we study the pulsed laser crystallization of hydrogen-free amorphous germanium-nitrogen alloys (a-GeN). We discuss the role of nitrogen during phase transitions and the possible application of the resulting structure as an optical diffraction grating. The crystallized region results of pure microcrystalline germanium (μc-Ge). An indication that Ge-N bonds have broken and nitrogen outdiffused of the film is obtained from infrared spectroscopy and confirmed by Raman spectra. A pattern of alternating a-GeN and μc-Ge lines with a period of about 4 μm acts as an optical diffraction grating due to the difference in optical properties between the two materials, and the three dimensional surface profile, caused by N2 effusion, that is formed on the sample.762717722Lin, C.W., Tseng, C.H., Chang, T.K., Lin, C.W., Wang, W.T., Cheng, H.C., (2002) IEEE Electron Device Letters, 23, p. 133Hatanaka, Y., Niraula, M., Nakamura, A., Aoki, T., (2001) Applied Surface Science, 175, p. 462Toet, D., Smith, P.M., Sigmon, T.W., Thompson, M.O., (2000) Applied Physics Letters, 77, p. 307Lu, J.P., Mei, P., Fulks, R.T., Rahn, J., Ho, J., Wang, Y., Boyce, J.B., Street, R.A., (2000) Journal of Vaccum Science and Technology A- Vacuum Surfaces and Films, 18, p. 1823Sposili, R.S., Im, J.S., (1998) Applied Physics A- Materials Science and Processing, 67, p. 273Im, J.S., Sposili, R.S., Crowder, M.A., (1997) Applied Physics Letters, 70, p. 3434Sposili, R.S., Im, J.S., (1996) Applied Physics Letters, 69, p. 2864Sameshima, T., (1996) Applied Surface Science, 96 (8), p. 352Gosain, D.P., Machida, A., Usui, S., Arai, M., (2001) Polycrystalline Semiconductors IV Materials, Technologies and Large Area Electronics, 80-81, p. 169Gosain, D.P., Noguchi, T., Usui, S., (2000) Japanese Journal of Applied Physics Part 2 - Letters, 39, pp. L179Carey, P.G., Smith, P.M., Theiss, S.D., Wickboldt, P., (1999) Journal of Vacuum Science and Technology A - Vacuum Surfaces and Films, 17, p. 1946Mulato, M., Toet, D., Aichmayr, G., Santos, P.V., Chambouleyron, I., (1997) Appl. Phys. Lett., 70, p. 3570Aichmayr, G., Toet, D., Mulato, M., Santos, P.V., Spangenberg, A., Christiansen, S., Albrecht, M., Strunk, H.P., (1998) Phys. Stat. Sol. (a), 166, p. 659Aichmayr, G., Toet, D., Mulato, M., Santos, P.V., Spangenberg, A., Bergman, R.B., (1998) J. of Non-cryst. Solids, 227-230, p. 921Mulato, M., Toet, D., Aichmayr, G., Spangenberg, A., Santos, P.V., Chambouleyron, I., (1998) J. of Non-cryst. Solids, 227-230, p. 930Aichmayr, G., Toet, D., Mulato, M., Santos, P.V., Spangenberg, A., Christiansen, S., Albrecht, M., (1999) J. Appl. Phys., 85, p. 4010Gupta, V.V., Song, H.J., Im, J.S., (1997) Applied Physics Letters, 71, p. 99Heintze, M., Santos, P.V., Nebel, C.E., Stutzmann, M., (1994) Appl Phys. Lett., 64, p. 3148Mulato, M., Toet, D., Aichmayr, G., Santos, P.V., Chambouleyron, I., (1997) J. Appl. Phys., 82, p. 5159Zanatta, A.R., Chambouleyron, I., (1993) Phys. Rev. B, 48, p. 4560Swanepoel, R., (1983) J. Phys. E: Sci Instrum, 16, p. 1214Marques, F.C., Chambouleyron, I., Evangelisti, F., (1989) J. of Non-cryst. Solids, 114, p. 561Guanchua, C., Fangqing, Z., (1990) This Solid Films, 185, p. 231Marques, F.C., Lacerda, R.G., Lima Jr., M.M., Vilcarromero, J., (1995) Phys. Stat. Sol(b), 192, p. 549Zanatta, A.R., Chambouleyron, I., Santos, P.V., (1996) J. Appl. Phys., 79, p.
Ground effect aerodynamics of racing cars
No full textWe review the progress made during the last thirty years on ground effect aerodynamics associated with race cars, in particular open wheel race cars. Ground effect aerodynamics of race cars is concerned with generating downforce, principally via low pressure on the surfaces nearest to the ground. The “ground effected” parts of an open wheeled car's aerodynamics are the most aerodynamically efficient and contribute less drag than that associated with, for example, an upper rear wing. Whilst drag reduction is an important part of the research, downforce generation plays a greater role in lap time reduction. Aerodynamics plays a vital role in determining speed and acceleration (including longitudinal acceleration but principally cornering acceleration), thus performance. Attention is paid to wings and diffusers in ground effect and wheel aerodynamics. For the wings and diffusers in ground effect, major physical features are identified and force regimes classified, including the phenomena of downforce enhancement, maximum downforce and downforce reduction. In particular the role played by force enhancement edge vortices is demonstrated. Apart from model tests, advances and problems in numerical modeling of ground effect aerodynamics are also reviewed and discussed
[Report to Chief J. E. Curry, by an unknown author #2]
No full textReport to Chief J. E. Curry, by an unknown author. The report contains a list of officers who gave depositions to the United States Attorney
[Report to Chief J. E. Curry, by an unknown author #1]
No full textReport to Chief J. E. Curry, by an unknown author. The report contains a list of officers who gave depositions to the United States Attorney
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