Báo cáo toán học: "Secret sharing schemes on sparse homogeneous access structures with rank three" doc

... C. Padr´o. Secret sharing schemes on access structures with inter- section number equal to one. Proceedings of the Third International Conference on Security in Communication Networks SCN’02, ... Section 3, while Section 4 deals with the characterization and description of the ideal sparse 3 -homogeneous access structures. 2 Preliminaries Some definitions and the notatio...

Ngày tải lên: 07/08/2014, 08:22

... winning directions are the vertical, the horizonta l and the two diagonals with slope 1 and −1. Note that we only assume that the greatest common divisor of the coordinates of each direction is 1, ... paper, this conjecture was disproved on the first Eml´ekt´abla Workshop [6]. It was shown with a tricky con- struction that maybe there is no perfect matching at all, yet alone a rainbow on...

Ngày tải lên: 08/08/2014, 11:20

... K Witrisal, On impact of topology and cost function on LSE position determination in wireless networks, in Proceedings of the Workshop on Positioning, Navigation, and Communication, 129–138 (2006) 33. ... pro- posed direct algorithm are demonstrated through com- puter simulations. Finally, conclusions are presented in Section 6. 2 ML-TOA estimation One OFDM symbol duration is T + T G ,w...

Ngày tải lên: 20/06/2014, 21:20

... study on performance of an IR-UWB receiver based on energy detection. in IEEE International Conference on WiCOM, Dalian, China 1–5 (2008) 3. N He, C Tepedelenlioglu, Performance analysis of non-coherent ... http://www.ieee802.org/15/pub/04/15-04-0662-02-004a- channel-model-final-report-r1.pdf. Accessed June 2011 23. H Arslan, Cross-modulation interference reduction for pulse-position mo...

Ngày tải lên: 20/06/2014, 21:20

... that     fdT n −  fdT    <for a ll n ≥ n 0 , i.e., T n converges weakly to T . The following prop osition shows that the convergence on compact sets im- plies the weak convergence. Proposition 3.10. Let {T n } ∞ n=1 be ... probability capacities equipped with the weak topology is separable and metrizable, and contains R d topologically. 2. Notation and Convention We first recal...

Ngày tải lên: 06/08/2014, 05:20

... group-theoretical construction of combinatorial schemes and their application to the design of expanders and concentrators, Journal of Problems of Information Transmission (1988), 39-46. 17. H. L. Montgomery, ... constructions actually meet the upper bound in (2) for q odd follows from [13]. The constructions we introduce in this paper are independent of the relative magnitudes of k and g....

Ngày tải lên: 07/08/2014, 06:22

... second ingredient of our proof is the following result of Stiebitz. Lemma 3 ([5]) Let G be a k-critical graph containing at least one vertex of degree k − 1. Then the number of connected components ... electronic journal of combinatorics 1 (1998), #R4 3 Let r be the number of connected components of H(G), then trivially |E(H(G))|≥n H −r. (2) Also, by Lemma 3, the number of connected component...

Ngày tải lên: 07/08/2014, 06:22

... similarly. Question 6.4. For what conditions on a poset P are the statistics des and dmc equidis- tributed on the set of linear extensions of P? One might apply another variation of the method ... the second theorem in Sections 4 and 5, and finish with some related open questions in Section 6. 2 Main theorem As implied in Section 1, we define Dumont’s statistic on an arbitrary word w to...

Ngày tải lên: 07/08/2014, 06:22

... 11. 5.4 Graphs with small components In this section, we consider graphs with connected components of restricted size. One special case is the complex of graphs on the vertex set [n]withatleasts ... exhibition is concluded in Section 5.5, where we examine not 2-connected graphs. We concentrate on element-decision trees and do not consider more general set-decision trees. An interestin...

Ngày tải lên: 07/08/2014, 08:22

... In this paper we shall prove the Conjecture for n which has only two distinct prime divisors. Theorem 1 The above Conjecture is true for n = p α q β where p, q are distinct ... it. Therefore k  j=1 a (1) j ∈ A 1 + A 2 + ···+ A k , the electronic journal of combinatorics 13 (2006), #N9 2 An addition theorem on the cyclic group Z p α q β Hui-Qin Cao Department of Applied ... structure of a s...

Ngày tải lên: 07/08/2014, 13:21