Sciweavers

167 search results - page 9 / 34
» A New Lower Bound for A(17, 6, 6)
Sort
View
97
Voted
COMPGEOM
2010
ACM
15 years 4 months ago
Lines avoiding balls in three dimensions revisited
Let B be a collection of n arbitrary balls in R3 . We establish an almost-tight upper bound of O(n3+ε ), for any ε > 0, on the complexity of the space F(B) of all the lines t...
Natan Rubin
AOR
2006
99views more  AOR 2006»
14 years 11 months ago
On-line bin Packing with Two Item Sizes
The problem of on-line bin packing restricted to instances with only two item sizes (known in advance) has a well-known lower bound of 4/3 for its asymptotic competitive ratio. We...
Gregory Gutin, Tommy R. Jensen, Anders Yeo
102
Voted
DAM
2007
141views more  DAM 2007»
14 years 11 months ago
On the packing chromatic number of Cartesian products, hexagonal lattice, and trees
The packing chromatic number χρ(G) of a graph G is the smallest integer k such that the vertex set of G can be partitioned into packings with pairwise different widths. Several...
Bostjan Bresar, Sandi Klavzar, Douglas F. Rall
SOCC
2008
IEEE
169views Education» more  SOCC 2008»
15 years 6 months ago
A subthreshold single ended I/O SRAM cell design for nanometer CMOS technologies
— Lowering supply voltage is an effective technique for power reduction in memory design, however traditional memory cell design fails to operate, as shown in [3], [10], at ultra...
Jawar Singh, Jimson Mathew, Dhiraj K. Pradhan, Sar...
FCT
2007
Springer
15 years 6 months ago
Analysis of Approximation Algorithms for k-Set Cover Using Factor-Revealing Linear Programs
We present new combinatorial approximation algorithms for k-set cover. Previous approaches are based on extending the greedy algorithm by efficiently handling small sets. The new a...
Stavros Athanassopoulos, Ioannis Caragiannis, Chri...