Satija,M. P. User's Guide to Sears List of Subject Headings     

I. V. Malhan 《Cataloging & classification quarterly》2013,51(5):504-505

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On the manufacture of gas for illumination from water     

M. Jobard 《Journal of The Franklin Institute》1847,43(1):52-56

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Television     

V.K. Zworykin 《Journal of The Franklin Institute》1934,217(1):1-37

This paper gives an outline of a new television system developed in the laboratories of RCA Victor Company, in Camden, N. J.The system is truly electrical and employs only electronic devices, without a single mechanically moving part.The translation of the visual image is accomplished by means of a vacuum tube called the iconoscope. This tube is a virtual electric eye and consists of a photo-sensitive mosaic corresponding to the retina of the human eye, and a moving electron beam representing the nerve of the eye. The image is projected optically on the mosaic and transformed within the tube into a train of electrical impulses, representing the illumination of individual points of the image.The reproduction of the image is accomplished by means of another vacuum tube, the kinescope, which transforms the electrical impulses back into the variation of light intensity through the bombardment of a fluorescent screen by the moving electron beam.The movement of the electron beams in both tubes, which is responsible for both transformations, is linear and divides the picture into a series of parallel lines. The movements are synchronized so that the instantaneous position of the beams with respect to a point in the picture is always identical. The synchronization is transmitted together with the picture signals, and operation of the receiver is completely automatic.The sensitivity of the iconoscope, at the present time, is approximately equal to that of a photographic film operating at the speed of a motion picture camera, permitting the transmission of outdoor scenes. The resolution is high, much higher than necessary for television images of the highest quality.The paper describes the theory of the system, its characteristics, mode of operation, and includes photographs of images obtained on the fluorescent screen of the receiver.  相似文献   

MICROPHOTOGRAPHY IN THE SERVICE OF SCIENCE     

Raney ML 《Bulletin of the Medical Library Association》1936,25(1-2):81-88

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REPORT OF THE MEMBERSHIP COMMITTEE 1932-1933.     

M E Irish 《Bulletin of the Medical Library Association》1933,22(1):61-62

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An objective method for depicting team performance in elite professional rugby union     

Jones NM  James N  Mellalieu SD 《Journal of sports sciences》2008,26(7):691-700

Using a two-study approach, we examined a methodology for objectively depicting team performance and form in a professional rugby union side. Study 1 developed standardized indicators to examine a team's performance in a single match relative to their previous matches over a domestic season via a performance report and form chart. This resulted in standardized performance indicators that provided instant and coherent feedback on the team's performance relative to previous standards. Study 2 then utilized this methodology to compare a match between two professional sides, played the following season, to assess the extent to which the performance by one team affected that of the other. Comparison of the two teams' performances, for the match they played against each other, identified a drop in relative performance (against previous standards) for both teams on the same performance indicators. This appeared to be due to the match being a close, hard-fought contest particularly in the tackle and around the gain-line. The findings of the two studies suggest an accurate and viable methodology for depicting team performance that is superior to the global measures previously adopted. Presenting teams' current standardized performances (i.e. form) on a single visual scale also has utility for coaches within an applied setting. Future research should further investigate the effect of one team's performance on another through both individual and team outcomes.  相似文献   

Understanding Leadership in Major Sporting Events: The Case of the 2005 World Aquatics Championships     

Milena M. Parent  Denise Olver  Benoit Séguin 《Sport Management Review》2009,12(3):167-184

The purpose of this paper was to begin understanding leadership within a major sporting event. A case study of the 2005 Fédération Internationale de Natation (FINA) World Aquatics Championships was built by means of interviews and archival material, using a multi-stakeholder perspective. Findings highlighted that core elements of upper-management level leadership in events were best described by the multiple-linkage leadership theory, which includes task commitment, ability and role clarity, work organization, cooperation and mutual trust, resources and support, and external coordination as the six intervening variables. While charismatic and transformational leadership styles surfaced as contributing to the overall success of an event, the multiple-linkage leadership theory offered a more comprehensive understanding of leadership in major sporting events from a multi-stakeholder perspective.  相似文献   

On the machinery of the Vienna exposition     

M. Tresca 《Journal of The Franklin Institute》1875,99(6):406-411

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The Films of Robert Wise by Richard C. Keenan     

James M. Welsh 《Journal of American culture (Malden, Mass. : 2003)》2008,31(1):121-122

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The physical basis of color-technology     

M. Luckiesh 《Journal of The Franklin Institute》1917,184(2):227-250

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