نتایج جستجو برای: ka band

تعداد نتایج: 141707  

2013
Sharon E. Straus Jacqueline Tetroe Onil Bhattacharyya Merrick Zwarenstein Ian D. Graham

Sharon E. Straus, Jacqueline Tetroe, Onil Bhattacharyya, Merrick Zwarenstein, and Ian D. Graham Li Ka Shing Knowledge Institute, St. Michael’s Hospital, University of Toronto, Toronto, ON, Canada Knowledge Translation Portfolio, Canadian Institutes of Health Research, Ottawa, ON, Canada Centre for Studies in Family Medicine, Department of Family Medicine, Schulich School of Medicine and Dentist...

2011
K. Singh K. Nagachenchaiah

This work presents a simple model of via-hole using electromagnetic field solver. Equivalent model parameters on Si are found out at Ka-band. Proposed single via-hole model has been compared with theoretical published data. The effect of viahole radius and substrate height at Ka-band frequencies has been studied. Further, S-parameter analysis and comparison for multiple vias at two different fr...

2007
R. Zech

Surface exposure dating (SED) is an innovative tool already being widely applied for moraine dating and for Late Quaternary glacier and climate reconstruction. Here we present exposure ages of 28 boulders from the Cordillera Real and the Cordillera Cochabamba, Bolivia. Our results indicate that the local Last Glacial Maximum (LGM) in the Eastern Cordilleras occurred at ∼22–25 ka and was thus sy...

2017
ANDREY YU. PUZACHENKO

Evolutionary changes in European small mammals during the second half of the Middle Pleistocene, from the Likhvin (Holsteinian, Hoxnian) Interglacial (MIS 11) to the beginning of the Mikulino (Eemian) Interglacial (MIS 5e), that is between 424 ka BP and 130 ka BP were traced. Trends in evolutionary change were documented, and East European and West European faunas were compared. An integrated a...

2013
Roger Tian

Notice that Bk a is a sum of terms σ1σ2 . . . σk where σi ∈ Sn is a term of the ith copy of Ba. Each σi will be called an a-shuffle, because it shuffles the first a cards back into the deck. We can thus denote σi = (b(i−1)a+1, b(i−1)a+2, . . . , bia) where b(i−1)a+m = σi(m) (i.e. σi acted on the mth card of the deck). Thus, the sequence (σ1, . . . , σk) gives rise to the ka-tuple (b1, b2, . . ....

2000
Gilles Pisier

This is a survey of the author's recent results on the Kadison and Halmos similarity problems and the closely connected notion of " length " of an operator algebra. We start by recalling a well known conjecture formulated by Kadison [Ka] in 1955. Kadison's similarity problem. Let A be a unital C *-algebra and let u: A → B(H) (H Hilbert) be a unital homomorphism (i.e. we have u(1) = 1 and u(ab) ...

2005
Florian Pop

a) Absolute Galois group and real fields LetK be an arbitrary field,Ka an algebraic extension,Ks the separable extension ofK insideKa, and finally GK = Aut(Ks|K) = Aut(Ka|K) the absolute Galois group of K. It is a celebrated well known Theorem by Artin–Schreier from the 1920’s which asserts the following: If GK is a finite non-trivial group, then GK ∼= GR and K is real closed. In particular, ch...

2014
NICHOLAS M. KATZ

This is Part II of the paper “Witt vectors and a question of Keating and Rudnick” [Ka-WVQKR]. Here we prove an independence result for tuples of character sums, formed with a variable character and its powers. In the Appendix, we prove an independence result for tuples of character sums formed with variable pairs of characters and products of the two.

2008
Yongxin Yuan Angelo Luongo

We first give the representation of the general solution of the following inverse quadratic eigenvalue problem IQEP : given Λ diag{λ1, . . . , λp} ∈ Cp×p , X x1, . . . , xp ∈ Cn×p, and both Λ and X are closed under complex conjugation in the sense that λ2j λ2j−1 ∈ C, x2j x2j−1 ∈ C for j 1, . . . , l, and λk ∈ R, xk ∈ R for k 2l 1, . . . , p, find real-valued symmetric 2r 1 -diagonal matrices M,...

2001
Wenzhen Li

When power control is employed in a Ka-band LEO satellite system featured with a Markov channel, the long loop lag induces power control gaps during channel state transition, which results in long (large-scale) bursterrors. To combat it, a novel hybrid ARQ scheme is proposed in this paper, in which the side information of the turbo decoder is utilized to derive the average reliability LLRl of t...

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