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7篇 您的检索式：作者名="Jansen LE"

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		题名	作者	年代	出处	被引量
	1	Teach the teachers: an observational study on mentor traineeship in gynecological laparoscopic surgery显示文摘	Kolkman W Engels LE Smeets MJ Jansen FW	2007	Gynecol Obstet Invest2007，64，1：	1
	2	Heparin coating with aprotinin reduces blood activation during coronary artery operations显示文摘	Jansen PG Le Besnerais P	1997	Ann Thorac Surg1997，63，1：	1
	3	Site-specific integration of Agrobacterium T-DNA in Arabidopsis thaliana mediated by Crerecombinase显示文摘	Vergunst AC Jansen LE Hooykaas PJ	1998	Nucleic Acids Res1998，26，11：	1
	4	Protection from type 1diabtes by vitaminD receptor haplotypes显示文摘	Ramos LE Jansen T Ivaskevicius V	2007	Diabetes Res ClinPract2007，77，1：	1
	5	Centromere-specific assembly of CENP-a nucleosomes is mediated by HJURP显示文摘	Foltz DR Jansen LE Bailey AO		Cell0，137，3：	1
	6	Centromere- speeific assembly of CENP-a nucleosomes is mediated by HJURP显示文摘	Foltz DR Jansen LE Bailey AO	2009	Cell2009，137，3：	1
	7	Approximation Algorithms for 3D Orthogonal Knapsack显示文摘We study non-overlapping axis-parallel packings of 3D boxes with profits into a dedicated bigger box where rotation is either forbidden or permitted, and we wish to maximize the total profit. Since this optimization problem is NP-hard, we focus on approximation algorithms. We obtain fast and simple algorithms for the non-rotational scenario with approximation ratios 9 +ε and 8 +ε , as well as an algorithm with approximation ratio 7 +ε that uses more sophisticated techniques; these are the smallest approximation ratios known for this problem. Furthermore, we show how the used techniques can be adapted to the case where rotation by 90° either around the z-axis or around all axes is permitted, where we obtain algorithms with approximation ratios 6 +ε and 5 +ε , respectively. Finally our methods yield a 3D generalization of a packability criterion and a strip packing algorithm with absolute approximation ratio 29/4, improving the previously best known result of 45/4.	Florian Diedrich Rolf Harren Klaus Jansen Ralf Thle Henning Thomas	2008	Journal of Computer Science & Technology2008，23，5：	0

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