نتایج جستجو برای: dodgson method
تعداد نتایج: 1630186 فیلتر نتایج به سال:
We provide deterministic, polynomial-time computable voting rules that approximate Dodgson’s and (the “minimization version” of) Young’s scoring rules to within a logarithmic factor. Our approximation of Dodgson’s rule is tight up to a constant factor, as Dodgson’s rule is NP-hard to approximate to within some logarithmic factor. The “maximization version” of Young’s rule is known to be NP-hard...
Hallucinatory inspiration Visual migrainous hallucinations have provided inspiration for others. Charles Dodgson, better known as Lewis Carroll, is known to have suffered from migraine and is thought to have used his migrainous disturbances of body image as inspiration for Alice's Adventures in Wonderland.'0 Atkinson and Appenzeller described a patient who had migraine who painted her complex v...
Dodgson, K. S. & Spencer, B. (1956). Rep. Progr. Chem. 53, 318. Gorini, L. & Maas, W. K. (1957). Biochim. biophy8. Ada, 25, 208. Harada, T. (1952). J. agric. chem. Soc., Japan, 26, 95. Harada, T. (1959). Bull. agric. chem. Soc., Japan, 23, 222. Harada,T., Kono,K. &Yagi, K. (1954). J. agric. chem. Soc., Japan, 28, 337. Harada, T. & Spencer, B. (1960). J. gen. Microbiol. 22, 520. Hilz, H. & Kittl...
We study the complexity of influencing elections through bribery: How computationally complex is it for an external actor to determine whether by a certain amount of bribing voters a specified candidate can be made the election’s winner? We study this problem for election systems as varied as scoring protocols and Dodgson voting, and in a variety of settings regarding homogeneous-vs.-nonhomogen...
We generalize (and hence trivialize and routinize) numerous explicit evaluations of determinants and pfaffians due to Kuperberg, as well as a determinant of Tsuchiya. The level of generality of our statements render their proofs easy and routine, by using Dodgson Condensation and/or Krattenthaler’s factor exhaustion method. All our matrices will be assumed to be embedded inside an infinite matr...
in this work, a novel and fast method for direct analysis of volatile compounds (davc) of medicinal plants has been developed by holding a filament from different parts of a plant in the gc injection port. the extraction and analysis of volatile components of a small amount of plant were carried out in one-step without any sample preparation. after optimization of temperature, extraction time a...
in iran we already use laminate tubes only in cosmetics industry. laminate tube manufacturers via using the most modern technology of the world, faced with the laminate tube market being saturated in cosmetics industry for packaging the cosmetic creams and toothpaste. but considering the great food market and therefore laminate tube features such as beautiful packaging, ease of use for the fina...
دیوارهای خاک مسلّح ، دیوارهای مقرون به صرفه ای هستند که امروزه کاربرد زیادی در پروژه های عمرانی دارند. پایداری دیوارهای خاک مسلّح از دو جنبه پایداری خارجی و پایداری درونی مدّ نظر است. پایداری درونی دیوار شامل پایداری در برابر گسیختگی و بیرون کشیدگی مسلّح کننده ها می باشد. جهت بررسی پایداری درونی دیوار بایستی نیروی مسلّح کننده ها محاسبه شود. برای محاسبه این نیروها روش های مختلفی ارائه شده که در این ت...
the purpose of this study was the relationship between problem – solvi ability with fdi cognitive style of students.the research method was correlation method. for data analysis pearson test was used. statistical society in this research was all the students of alligoodarz city in 1391-92 year.to sampling of statiscal population was used sampling multi-stage random the size of sample selected 2...
a significant problem in multicarrier communication systems is the necessity to reduce the value of papr (peak-to-average power ratio) of transmitting signal. in this thesis we study the effect of the system parameters such as coding and modulation types on papr and ultimate ber in a mc-cdma system. in this study we consider fading channel as well as the nonlinearity of transmitter’s amplifier ...
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