Illuminating Engineering Society of North America 1988–89 Annual Report

1990 ◽  
Vol 19 (1) ◽  
pp. 137-145
Keyword(s):  
North America ◽  
Annual Report ◽  
Engineering Society

scholarly journals The LEDs luminance distribution measurement quality dependency on image focusing

2020 ◽  
Vol 12 (4) ◽  
pp. 121
Author(s):  
Dariusz Czyżewski
Keyword(s):  
North America ◽  
Street Lighting ◽  
Distribution Measurement ◽  
Luminance Distribution ◽  
Fluorescent Lamps ◽  
Engineering Society ◽  
Ccd Array ◽  
Testing Techniques ◽  
Color Rendering

Luminance measurements are used in a vast range of lighting technology fields. The author’s research has proved that measuring the luminance distribution on light source surface is the most challenging part of this process. The research has been conducted for a commercially available digital luminance distribution meter, with the goal of analyzing the influence of image focus settings and exposure parameters on the measured luminance values. It has been concluded that the incorrect image focus and inadequately matched exposure parameters (distance from the workpiece) contribute to quantitative changes in the information on luminance distribution on the LED surface and affect the precision the maximum luminance determination. Full Text: PDF ReferencesC. Xu, H. Cheng, and Y. Feng, "Optical design of rectangular illumination with freeform lenses for the application of LED road lighting," Frontiers of Optoelectronics, 2017, CrossRef D. Czyzewski, "LED substitutes of conventional incandescent lamps," Przeglad Elektrotechniczny, vol. 88, no. 11A, pp. 123-127, 2012. DirectLink W. R. Ryckaert, K. A. G. Smet, I. A. A. Roelandts, M. Van Gils, and P. Hanselaer, "Linear LED tubes versus fluorescent lamps: An evaluation," Energy and Buildings, 2012, CrossRef X.-H. Lee, I. Moreno, and C.-C. Sun, "High-performance LED street lighting using microlens arrays," Optics Express, 2013, CrossRef D. Czyzewski, "The street lighting luminaires with LEDs," Przeglad Elektrotechniczny, vol. 86, pp. 276-279, 2009. DirectLink D. Mozyrska, M. Wyrwas, and I. Fryc, "The determination of the LEDs colorimetric parameters, in the range of their operating temperature," Przeglad Elektrotechniczny, vol. 93, no. 4a, pp. 232-234, 2012. DirectLink J. Kowalska and I. Fryc, "Colour rendition quality of typical fluorescent lamps determined by CIE colour fidelity index and colour rendering index," Przeglad Elektrotechniczny, vol. 95, no. 7, pp. 94--97, 2019, CrossRef J. Kowalska, "Analysis of parameters describing the quality of the color rendering of light sources according to the IES TM-30-15 and the CIE 013.3-1995," Przeglad Elektrotechniczny, vol. 93, no. 6, pp. 50--54, 2017, CrossRef K. Houser, M. Mossman, K. Smet, and L. Whitehead, "Tutorial: Color Rendering and Its Applications in Lighting," LEUKOS - Journal of Illuminating Engineering Society of North America, vol. 12, no. 1-2, pp. 7-26, 2016, CrossRef S. Słomiński, "Identifying problems with luminaire luminance measurements for discomfort glare analysis," Lighting Research and Technology, 2016, CrossRef D. Czyzewski, "Investigation of COB LED luminance distribution," 2016, CrossRef M. Jongewaard, "Guide to selecting the appropriate type of light source model," in Proc.SPIE, Aug. 2002, vol. 4775, CrossRef D. Czyzewski, "Selected problems of defining the luminous area of electroluminescent diodes," Przeglad Elektrotechniczny, vol. R. 84, nr 8, pp. 125-128, 2008. DirectLink C. D. Galatanu, "Improving the Luminance Measurement from Digital Images," in 2019 International Conference on Electromechanical and Energy Systems (SIELMEN), 2019, pp. 1-4. CrossRef I. Fryc and E. Czech, "Application of optical fibers and CCD array for measurement of luminance distribution," in Proc. SPIE 5064, Lightmetry 2002: Metrology and Testing Techniques Using Light, 2003, pp. 18-21, CrossRef I. Fryc and E. Czech, "Spectral correction of the measurement CCD array," Optical Engineering, 2002, CrossRef I. Fryc, "Angular characteristics of a silicon detector spectral sensitivity corrected by an absorption filter," in Proc. SPIE 4517, Lightmetry: Metrology, Spectroscopy, and Testing Techniques Using Light, 2001, pp. 42-45, CrossRef I. Fryc, "Accuracy of spectral correction of a CCD array for luminance distribution measurement," in Proc. SPIE 5064, Lightmetry 2002: Metrology and Testing Techniques Using Light, 2003, pp. 38-42, CrossRef M. Moeck and S. Anaokar, "Illuminance analysis from high dynamic range images," LEUKOS - Journal of Illuminating Engineering Society of North America, pp. 211-228, 2006, CrossRef D. Czyżewski, "Research on luminance distributions of chip-on-board light-emitting diodes," Crystals, 2019, CrossRef

scholarly journals Annual Reports to Shareholders: Historical Collections in Libraries

2010 ◽  
Vol 71 (6) ◽  
pp. 525-531 ◽  
Author(s):  
Judith M. Nixon
Keyword(s):  
North America ◽  
Industrial Development ◽  
Annual Report ◽  
Academic Research ◽  
Annual Reports ◽  
Financial Status ◽  
Research Libraries ◽  
Historical Collections ◽  
The Social ◽  
Late Twentieth

The purpose of this article is to describe the scope and depth of the historic corporate annual report collections in twelve academic/research libraries in North America. For many decades, a few major academic business libraries have been collecting and preserving corporate Annual Reports (ARS), the reports sent to shareholders documenting the financial status and future plans of the company. Today these historic collections provide more than a record of the companies’ finances; they provide a glimpse into the social and cultural thoughts from the past and the corporate stories of individual companies. Digitization of these reports has only just begun; so, except for fewer than 900 companies (most of which have been on the Fortune 500 list), the companies included in these historic annual report collections are not available electronically. The combined collection of the twelve libraries includes reports from nearly 38,000 different companies. Stanford, Harvard, and Western Ontario have the largest collections. Harvard and Columbia have collections with significant historic depth, while Purdue has a collection with important late–twentieth-century holdings. The overlap of the collections is much smaller than was anticipated. The two largest collections, Stanford with over 18,000 companies and Harvard with over 11,000 companies, have only 3,668 companies in common. The overlap of companies between the largest five collections is only thirty-three companies. This research identifies these collections as unique and therefore valuable to the study of specific company histories and the industrial development in North America. Librarians need to preserve these collections and work toward digitizing them.

The Bionomics of the Pine Bud Moth, Exoteleia dodecella L. (Lepidoptera: Gelechiidae), in Ontario

1959 ◽  
Vol 91 (1) ◽  
pp. 5-14 ◽  
Author(s):  
J. Lynton Martin
Keyword(s):  
North America ◽  
Annual Report ◽  
Eradication Program

The pine bud moth, Exoteleia dodecella L., is a serious pest of pine throughout much of Europe. In North America, its presence was first reported in 1928 in nurseries at Fonthill and Ridgeville in the Niagara Peninsula (Annual Report, Minister of Agriculture, Ottawa, Canada, 1929). The occurrence and spread of this species was followed closely until 1933 (Sheppard, 1930; Ross and Caesar, 1931; Caesar and Ross, 1932, and Twinn, 1933), in connection with the European pine shoot moth eradication program which was then in progress.

scholarly journals THE COCCIDÆ OF BRITISH NORTH AMERICA

1901 ◽  
Vol 33 (7) ◽  
pp. 193-200 ◽  
Author(s):  
Geo. B. King
Keyword(s):  
North America ◽  
Annual Report ◽  
British North America ◽  
Ant Nests ◽  
Mealy Bug ◽  
Civilized World

Ripersia, Sign.Ripersia lasii, Ckll, 1896. (Native.) Originally described from ant-nests in Mass.; was found in an ants' nest (Lasius Americanus, Em.) at Toronto, Canada, in 1897, by Mr. R. J. Crew. It has been found infesting the roots of China asters in Mass.Bib.—Can. Ent., xxxi. (1899), 110.Dactylopius, Costa.Dactylopius longispinus, Targ. (Introduced.) The greenhouse Mealy bug, fouud throughout the civilized world, occurs in Canada in all the Provinces where greenhouse plants are grown; it is recorded from South Quebec.Bib.—29th Annual Report, Ent. Soc., Ont., 1898, 43.

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