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6篇 您的检索式:作者名="Zhewu"
    题名 作者 年代 出处 被引量
1Design and manufacture of customized dental implants by using reverse engineering and selective laser melting technology显示文摘Jianyu Chen Zhiguang Zhang Xianshuai Chen Chunyu Zhang Gong Zhang Zhewu Xu 2014The Journal of Prosthetic Dentistry2014,,:2
2Possible association of a cholecystokinin promoter polymorphism ( CCK-36C >T) with panic disorder 显示文摘Zhewu W John V Russell N 1998Am J Med Genet1998,81,:1
3Relationship between the development of sphenoid bone in human embryo and fetus and adult morphology显示文摘The developing sphenoid bone is considered to be a median cartilage mass(basilar sphenoid bone)with three cartilaginous processes(orbital wing or orbital pterygoid process,temporal wing and nasal pterygoid process).The relationship between this initial morphology and adult morphology is difficult to determine because of extensive membranous ossification along the cartilaginous elements.We examined the sagittal sections of 25 embryos and fetuses aged 6-34 weeks,and compared them with the horizontal and frontal sections of the other 25 late fetuses(217-340 mm).At 7-8 weeks,the optic nerve was sandwiched between bars of the orbitosphenoid.The superior rectus originates from a bar different from the other three recti.Shaohe Wang Zhao Peng Jin Zhewu Gen Murakam 2021解剖学杂志2021,44,S01:0
4Histological study of fabella and muscle origin of the plantaris and gastrocnemius lateral head in late-stage fetuses显示文摘Cartilaginous fabella appears to be embedded in the plantaris origin(PL)that fuses with the gastrocnemius lateral head(GL)in midterm fetuses.Histological sections of unilateral knee joints of 15 late-stage fetuses,we reexamined the topographical anatomy of fabella or its analogue(a tight fibrous mass)with origins of the GL and PL.Irrespective of whether the cartilaginous fabella is present(6/15)or absent,these muscle origins were composed of three parts(PLl,PL2 and PL3;GLl,GL2 and GL3).Fabella or its analogues embedded in a thicker common tendon origin of GL and PL.PL1 was similar to the adult PL,and originated from the femoral condyle immediately above the common tendon.Huang Shu Du Bin Jin Zhewu Gen Murakam 2021解剖学杂志2021,44,S01:0
5Fuzzy optimization of space frame显示文摘Fuzzy concepts are introduced into structural optimization to solve fuzzy optimization problems with a crisp objective function and fuzzy constraints, also a non-membership function is used to convert fuzzy constrains into crisp constrains. Two models are discussed where the objective function considered is the volume of space frame and the fuzzy constrains are design limits by the axial strength, slenderness, deflection, thickness and diameter of space frame member.ZaigenMu ZheWu2002Journal of University of Science and Technology Beijing2002,9,2:0
6Penalty Formulations and Trap-Avoidance Strategies for Solving Hard Satisfiability Problems显示文摘In this paper we study the solution of SAT problems formulated as discrete decision and discrete constrained optimization problems. Constrained formulations are better than traditional unconstrained formulations because violated constraints may provide additional forces to lead a search towards a satisfiable assignment. We summarize the theory of extended saddle points in penalty formulations for solving discrete constrained optimization problems and the associated discrete penalty method (DPM). We then examine various formulations of the objective function, choices of neighborhood in DPM, strategies for updating penalties, and heuristics for avoiding traps. Experimental evaluations on hard benchmark instances pinpoint that traps contribute significantly to the inefficiency of DPM and force a trajectory to repeatedly visit the same set of or nearby points in the original variable space. To address this issue, we propose and study two trap-avoidance strategies. The first strategy adds extra penalties on unsatisfied clauses inside a trap, leading to very large penalties for unsatisfied clauses that are trapped more often and making these clauses more likely to be satisfied in the future. The second strategy stores information on points visited before, whether inside traps or not, and avoids visiting points that are close to points visited before. It can be implemented by modifying the penalty function in such a way that, if a trajectory gets close to points visited before, an extra penalty will take effect and force the trajectory to a new region. It specializes to the first strategy because traps are special cases of points visited before. Finally, we show experimental results on evaluating benchmarks in the DIMACS and SATLIB archives and compare our results with existing results on GSAT, WalkSAT, LSDL, and Grasp. The results demonstrate that DPM with trap avoidance is robust as well as effective for solving hard SAT problems.BenjaminW.Wah ZheWu 2005Journal of Computer Science & Technology2005,20,1:0
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