174,973 research outputs found
Multi-sided Bohm-Bawerk assignment markets: the core
No full textWe introduce the class of multi-sided B ohm-Bawerk assignment games, which generalizes the well-kown two-sided B ohm-Bawerk assignment games to situations with an arbitrary number of sectors. We reach the extreme core allocations of any multi-sided B ohm- Bawerk assignment game by means of an associated convex game defined on the set of sectors instead of the set of sellers and buyers. We also study when the core of these games is stable in the sense of von Neumann-Morgenstern.homogeneous goods, core, assignment games, multi-sided markets, extreme points
Standard Ohm
No full textA standard 100 ohm instrument manufactured by Nalder Brothers and Co., London. The inscription on the instrument reads, ""One true ohm right at 18.9 degrees C / Nalder Brothers and Co. London No. 4085""20 x 13 x 13 cmOne true ohm right at 18.9 degrees C / Nalder Brothers and Co. London No. 408
Laps For Manufacturing Absolute Ohm Inductor
No full textIn 1938, Harvey L. Curtis, Charles Moon, and C. Matilda Sparks completed a second determination of the value of the absolute ohm at the National Bureau of Standards. For this experiment, a new inductor was constructed in which a wire was wound in a screw thread of uniform pitch cut into a glass tube. The uniform pitch eliminated errors in computed inductance experienced in previous experiments, in which the variations in pitch introduced large measurement uncertainties. Laps were used to grind the uniform pitch of the inductor. Two laps were utilized. A long lap for obtaining uniformity of pitch with only slight variation in diameter, and a short lap for removing variations in diameter..002A: 27 x 44 x 42 cm; .002B: 26 x 51 x 2
Standard Ohm Tube Materials
No full textThese parts were used at the National Bureau of Standards in 1911 by Charles A. Briggs, Frank A. Wolff, and M.P. Shoemaker for the construction and calibration of a mercury ohm tube to be used as a primary resistance standard. Included among the materials are two small platinum-iridium metal pieces, originally designed and used by Louis A. Fischer around 1898, which were used to change an end length standard to a line standard. These pieces were used in the ohm tube work to determine the length of the tubes.16 x 8 x 8 c
Standard Ohm
No full textA Standard Ohm manufactured by Nalder Brothers & Co. (London, UK).20 x 9 x 9 c
Effects of electron irradiation and temperature on 1 ohm-cm and 10 ohm-cm silicon solar cells
No full textOne OHM-cm and 10 OHM-cm silicon solar cells were exposed to 1.0 MeV electrons at a fixed flux of 10 to the 11th power e/sq cm/sec and fluences of 10 to the 13th power, 10 to the 14th power and 10 to the 15th power e/sq.cm. 1-V curves of the cells were made at room temperature, - 63 C and + or - 143 C after each irradiation. A value of 139.5 mw/sq cm was used as AMO incident energy rate per unit area. The 10 OHM-cm cells appear more efficient than 1 OHM-cm cells after exposure to a fluence greater than 10 to the 14th power e/sq cm. The 1.0 MeV electron damage coefficients for both 1 OHM-cm and 10 OHM-cm cells are somewhat less than those for previously irradiated cells at room temperature. The values of the damage coefficients increase as the cell temperatures decrease. Efficiencies pertaining to maximum power output are about the same as those of n on p silicon cells evaluated previously
Effects of proton irradiation and temperature on 1 ohm-cm and 10 ohm-cm silicon solar cells
No full textThe 1 ohm-cm and 10 ohm-cm silicon solar cells were exposed to 1.0 MeV protons at a fixed flux of 10 to the 9th power P/sq cm-sec and fluences of 10 to the 10th power, 10 to the 11th power, 10 to the 12th power and 3 X 10 to the 12th power P/sq cm. I-V curves of the cells were made at room temperature, 65 C and 165 C after each irradiation. A value of 139.5 mw/sq cm was taken as AMO incident energy rate per unit area. Degradation occurred for both uncovered 1 ohm-cm and 10 ohm-cm cells. Efficiencies are generally higher than those of comparable U.S. cells tested earlier. Damage (loss in maximum power efficiency) with proton fluence is somewhat higher for 10 ohm-cm cells, measured at the three temperatures, for fluences above 2 X 10 to the 11th power P/sq cm. Cell efficiency, as expected, changes drastically with temperature
B. A. OHM, 1887
No full textB.A. OHM, 1887 \n\n This standard resistor, made by Elliott Bros., London, was presented in 1887 by the (British) Institution of Electrical Engineers as a Fahie Premium to A. E. Kennelly (then an associate member) as an award for his paper on ""Certain Phenomena Connected with the Imperfect Earth in Telegraph Circuits."" It was calibrated at the Cavendish Laboratory as Test No. 193 on March 13, 1896, and certified by R. T. Glazebrook as R = 1.00028 legal ohms at 16.9 "C with the statement ""1 legal ohm = 1.0112 BA units."" It was apparently given to the National Bureau of Standards (NBS) by Professor Kennelly about 1930. When measured at 25 degrees C by C. Peterson in 1962, in terms of the ohm as then maintained by NBS, its value was found to be 0.999 950 ohms
Einleitung
No full textOhm U, Bongartz C. Einleitung. In: Ohm U, Bongartz C, eds. Soziokulturelle und psycholinguistische Untersuchungen zum Zweitspracherwerb. Inquiries in Language Learning. Vol 6. Franfurt: Peter Lang; 2012: 9-13
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