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Laparoscopic surgical approaches for various locations of gastrointestinal stromal tumours
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作者 Li-Quan Chen Chu-Ying Wu +1 位作者 Si-Jia Wu Kai Ye 《World Journal of Clinical Cases》 2025年第21期16-24,共9页
Gastrointestinal stromal tumours(GISTs)are tumours that originate from mesenchymal tissue,are predominantly located in the stomach,and typically do not metastasize to the lymph nodes.Surgical intervention remains the ... Gastrointestinal stromal tumours(GISTs)are tumours that originate from mesenchymal tissue,are predominantly located in the stomach,and typically do not metastasize to the lymph nodes.Surgical intervention remains the primary treatment modality for GISTs.Historically,open surgery was the predominant approach;however,advancements in medical technology have led to laparoscopic surgery becoming the standard practice.Compared with traditional open surgical techniques,laparoscopic surgery is less invasive and facilitates more rapid postoperative recovery.Given that GISTs can arise at any location within the gas-trointestinal tract,the specific surgical methods employed vary according to both the tumour's anatomical site and its growth characteristics.The aim of this review is to examine laparoscopic surgical strategies for managing GISTs across different regions of the gastrointestinal tract by synthesizing recent research trends and relevant evidence-based medical literature. 展开更多
关键词 Gastrointestinal stromal tumour LAPArOSCOPY SUrGErY r0 resection function preservation
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Lip_α(R^n)(0<α<1)上的经典Lusin面积积分函数 被引量:1
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作者 王汝发 李德生 《烟台师范学院学报(自然科学版)》 1998年第2期91-96,共6页
证明了当f∈Lipα(Rn)(0<α<1/2)时,f的S函数或处处有限,或处处为∞;如属前者,则S(f)∈Lipα(Rn)(0<α<1/2),且S(f)∧α≤Cf∧α,其中C是与维数n,α有关的常数.
关键词 Liusin面积 积分函数 Lipα范数 局部可积函数
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Littlewood-Paleyg~*_λ-函数在Lip_α(R^n)(0<α 被引量:2
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作者 王汝发 《宁夏大学学报(自然科学版)》 CAS 1994年第2期21-28,共8页
本文得到了Littlewood-paley-函数在Lip_α(R ̄n)(0<α<1/2)上的有界性.
关键词 LITTLEWOOD PALEY gλ函数
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Error Bound for the Generalized Complementarity Problem with Analytic Functions
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作者 Hong-Chun Sun School of Sciences, Linyi University, Linyi 276005, PRC 《International Journal of Automation and computing》 EI 2012年第3期288-291,共4页
In this paper, we consider the global error bound for the generalized complementarity problem (GCP) with analytic functions. Based on the new technique, we establish computable global error bound under milder conditio... In this paper, we consider the global error bound for the generalized complementarity problem (GCP) with analytic functions. Based on the new technique, we establish computable global error bound under milder conditions, which refines the previously known results. 展开更多
关键词 Generalized complementarity problem (GCP) error bound analytic functions r0-function Lipschitz continuity.
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Littlewood-Paley g_λ~*-函数在Lip_α(R^n)(0<α
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作者 李德生 《河北师范大学学报(自然科学版)》 CAS 1993年第2期1-7,共7页
最近Shilin Wang得到了Littlewood-Paley g-函数的一些性质.本文证明:当0<α<min{ε,1/2}时,Littlewood-Paley gλ-函数具有类似的性质.即当f∈Lip.(R^n)且λ>1时,f的gλ函数gλ(f)要么处处为无穷大,要么几乎处处有限;如属后者... 最近Shilin Wang得到了Littlewood-Paley g-函数的一些性质.本文证明:当0<α<min{ε,1/2}时,Littlewood-Paley gλ-函数具有类似的性质.即当f∈Lip.(R^n)且λ>1时,f的gλ函数gλ(f)要么处处为无穷大,要么几乎处处有限;如属后者则gλ(f)∈Lip.(R^n),且||gλ(f)||Aa≤c||f||_(Aa).这里c表示仅与维数n,λ,ε,α有关的常数. 展开更多
关键词 LITTLEWOOD-PALEY g_λ-函数 Lip.(r^n) (0<α<1) POISSON积分
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An L^0(F,R)-valued Function's Intermediate Value Theorem and Its Applications to Random Uniform Convexity 被引量:2
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作者 Tie Xin GUO Xiao Lin ZENG 《Acta Mathematica Sinica,English Series》 SCIE CSCD 2012年第5期909-924,共16页
Let (Ω, F, P) be a probability space and L0(F,R) the algebra of equivalence classes of real- valued random variables on (Ω, F, P). When L0(F,R) is endowed with the topology of convergence in probability, we ... Let (Ω, F, P) be a probability space and L0(F,R) the algebra of equivalence classes of real- valued random variables on (Ω, F, P). When L0(F,R) is endowed with the topology of convergence in probability, we prove an intermediate value theorem for a continuous local function from L0(F, R) to L0(F,R). As applications of this theorem, we first give several useful expressions for modulus of random convexity, then we prove that a complete random normed module (S, ||·||) is random uniformly convex iff LP(S) is uniformly convex for each fixed positive number p such that 1 〈 p 〈 +∞. 展开更多
关键词 L0(F r)-valued function intermediate value theorem random normed module random uniform convexity modulus of random convexity
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扰动Newton法求解函数互补问题 被引量:4
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作者 宋岱才 刘国志 崔松峰 《抚顺石油学院学报》 2002年第4期78-80,87,共4页
把R0 -矩阵的概念推广到了非线性互补问题 (NLCP) :y - f(x) =0 ,x y =(x1y1,… ,xnyn) T=0 ,x ,y∈Rn+ 的情形 ,应用扰动Newton法求解当 f :Rn→Rn是连续可微的P0 -函数时的互补问题。在无严格互补解的条件下证明了若 f(x)是一个连续... 把R0 -矩阵的概念推广到了非线性互补问题 (NLCP) :y - f(x) =0 ,x y =(x1y1,… ,xnyn) T=0 ,x ,y∈Rn+ 的情形 ,应用扰动Newton法求解当 f :Rn→Rn是连续可微的P0 -函数时的互补问题。在无严格互补解的条件下证明了若 f(x)是一个连续可微的P0 -函数 ,满足李卜西兹条件 ,且存在一个常数c>0和 0 <ε≤ 1对所有x∈Rn+ 有 fi0 (x) - fi0 (0 )≥c‖x‖ε,其中 ,xki0 =maxi∈I{xki}成立 ,则产生的序列 { ωk}大范围收敛到NLCP的解。并证明了若 ( f(x ) ) γ γ是一个P矩阵 ,那么序列 { ωk}Q - 2阶收敛到NLCP的解ω 。 展开更多
关键词 扰动Newton法 求解 函数互补 P0-函数 r0-矩阵 非线性互补 Q-2次收敛
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滞后型脉冲泛函微分方程解对初值的可微性
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作者 金凤飞 周金艳 闫宝强 《科学技术与工程》 2008年第2期307-310,共4页
考虑脉冲泛函微分方程{x′=f(t,xt),t>t0,t≠tk,△x=Ik(x(t)),t=tk,k=1,2,…,x(t0+)=ω,xt0=φ。局部解的存在性,及在局部解存在的前提下解对初值(φ,f)的可微性。
关键词 脉冲泛函微分方程 初值 L^1([-r 0] r) 可微性
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