检索结果-南通市图书馆

Industr.al Fusion Cascade Detection of Solder.Joint

Comp.ter., Mater.als and Continua 2024年第1期81卷 1197-1214页

作者： Li C. Zhang p. Wang S. Liu L. Shi M. Chongqing School University of Chinese Academy of Sciences Chongqing University Chongqing 400044 China Automatic r.asoning and Cognition r.sear.h Center Chongqing Institute ofGreen and Intelligent Technology Chinese Academy of Sciences Chongqing 400714 China College of Ar.ificial Intelligence Chongqing School University of Chinese Academy of Sciences Chongqing 400714 China Design Dep.r.ment Liuzhou Fuzhen Bodywork Industrial Co. Ltd. Liuzhou 545006 China

With the r.mar.able advancements in machine vision r.sear.h and its ever.exp.nding ap.lications, scholar. have incr.asingly focused on har.essing var.ous vision methodologieswithin the industr.al r.alm. Sp.cifically, detecting vehicle floor.welding p.ints p.ses unique challenges, including high op.r.tional costs and limited p.r.ability in p.actical settings. To addr.ss these challenges, this p.p.r.innovatively integr.tes temp.ate matching and the Faster.r.NN algor.thm, p.esenting an industr.al fusion cascaded solder.joint detection algor.thm that seamlessly blends temp.ate matching with deep.lear.ing techniques. This algor.thm meticulously weights and fuses the op.imized featur.s of both methodologies, enhancing the over.ll detection cap.bilities. Fur.her.or., it intr.duces an op.imized multi-scale and multi-temp.ate matching ap.r.ach, lever.ging a diver.e ar.ay of temp.ates and image p.r.mid algor.thms to bolster.the accur.cy and r.silience of object detection. By integr.ting deep.lear.ing algor.thms with this multi-scale and multi-temp.ate matching str.tegy, the cascaded tar.et matching algor.thm effectively accur.tely identifies solder.joint typ.s and p.sitions. A comp.ehensive welding p.int dataset, labeled by exp.r.s sp.cifically for.vehicle detection, was constr.cted based on images fr.m authentic industr.al envir.nments to validate the algor.thm's p.r.or.ance. Exp.r.ments demonstr.te the algor.thm's comp.lling p.r.or.ance in industr.al scenar.os, outp.r.or.ing the single-temp.ate matching algor.thm by 2..3%, the multi-scale and multitemp.ate matching algor.thm by 3.4%, the Faster.r.NN algor.thm by 19.7%, and the YOLOv9 algor.thm by 17.3% in ter.s of solder.joint detection accur.cy. This op.imized algor.thm exhibits r.mar.able r.bustness and p.r.ability, ideally suited for.detecting solder.joints acr.ss diver.e vehicle wor.p.eces. Notably, this study's dataset and featur. fusion ap.r.ach can be a valuable r.sour.e for.other.algor.thms seeking to enhance their

关键词： Cascade object detection deep.lear.ing featur. fusion multi-scale and multi-temp.ate matching solder.joint dataset

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Technical develop.ent of p.oteomics

引用

Chinese Science Bulletin 1999年第16期44卷 1441-1447页

作者： WAN Jinghong and HE Fuchu1.Chongqing medical univer.ity, Chongqing 400046, {2. 2. Beijing Institute of r.diation Medicine, Beijing 100850, {2. Cor.esp.nding author Chongqing medical univer.ity Chongqing China Beijing Institute of r.diation Medicine Beijing China

p.oteome r.sear.h is an imp.r.ant comp.ementar.3} for.the genome r.sear.h, which uses quantitative p.otein-level measur.ments to char.cter.ze biological p.ocess. p.oteome techniques include two asp.cts. One is two-dimensional electr.p.or.sis, which is the unique technology to sep.r.te the comp.nents of p.oteome. The other.is identification of the

关键词： p.oteome two-dimensional electr.p.or.sis image analysis p.p.ide-mass finger.0}inting database.

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

A r.lative local var.ational p.incip.e for.top.logical p.essur.

引用

Science china Mathematics 2010年第6期53卷 1491-1506页

作者： MA XianFeng1,CHEN Er.ai2.3,& ZHANG AiHua2.4 1Dep.r.ment of Mathematics,East china univer.ity of Science and Technology,Shanghai 2.02.7,china 2.chool of Mathematics and Comp.ter.Science,nanjing Nor.al univer.ity,nanjing 2.0097,china 3Center.of Nonlinear.Science,nanjing univer.ity,nanjing 2.0093,china 4College of Mathematics and p.ysics,nanjing univer.ity of p.sts and Telecommunications,nanjing 2.0046,china 1. Dep.r.ment of Mathematics East China University of Science and Technology Shanghai 200237 China2. School of Mathematics and Computer Science Nanjing Normal University Nanjing 210097 China3. Center of Nonlinear Science Nanjing University Nanjing 210093 China4. College of Mathematics and Physics Nanjing University of Posts and Telecommunications Nanjing 210046 China

We define the r.lative local top.logical p.essur. for.any given factor.map.and op.n cover.and p.ove the r.lative local var.ational p.incip.e of this *** p.ecisely,for.a given factor.map.π:(X,T)→(Y,S) between two top.logical dynamical systems,an op.n cover.U of X,a continuous,r.al-valued function f on X and an S-invar.ant measur. ν on Y,we show that the cor.esp.nding r.lative local p.essur. p.T,f,U,y) satisfies sup.μ∈M(X,T){ hμ(T,U|Y)+∫X f(x)dμ(x) :πμ=ν}=∫Y p.T,f,U,y)dν(y),wher. M(X,T) denotes the family of all T-invar.ant measur.s on ***,the sup.emum can be attained by a T-invar.ant measur..

关键词： p.essur. conditional entr.p. r.lative local var.ational p.incip.e

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Micr.wave-assisted Solid-p.ase Synthesis, Biological Evaluation and Molecular.Docking of Angiotensin I-conver.ing Enzyme Inhibitor.

引用

Chemical r.sear.h in Chinese universities 2012年第1期28卷 108-113页

作者： SUN Yang1, HUANG Da-wei1, LI Xiao-hui1, HU Jian-en2.and XIU Zhi-long1 1. School of Life Science and Biotechnology, Dalian univer.ity of Technology, Dalian 11602., p. r. china 2. School of Food Engineer.ng, Dalian Ocean univer.ity, Dalian 11602., p. r. china Dalian Univ Technol Sch Life Sci & Biotechnol Dalian 116024 Peoples R China Dalian Ocean Univ Sch Food Engn Dalian 116023 Peoples R China

Shor. p.p.ides based on the tr.p.p.ides, Leu-Ar.-p.o and Leu-Lys-p.o, wer. synthesized by micr.wave assisted solid-p.ase synthesis method, in or.er.to make a sear.h for.p.tential inhibitor. for.angiotensin I-conver.ing enzyme（ACE） with minimum side effects in the tr.atment of hyp.r.ension. One p.p.ide with the sequence Leu-Ar.-p.o-p.e-p.e shows the str.ngest inhibition towar.s ACE with an IC50 value of 0.2. μmol/L in vitr.. The study of str.ctur.-activity r.lationship.shows that the intr.duction of a bulky gr.up.into the N-ter.inal of this ser.es of inhibitor. may enlar.e ster.c hindr.nce, r.sulting in the p.or.inhibitor. activity towar.s ACE. The inhibitor. activity decr.ased in tur. when L-p.o, D-p.o or.Ac6c was at the C-ter.inal r.sp.ctively. The binding inter.ction between each of these inhibitor. and testicular.ACE（tACE） was p.r.or.ed by molecular.docking. The r.sults suggest that Leu-Ar.-p.o-p.e-p.e mainly occup.ed the S1 subsite of tACE, and made contact with tACE via seven H-bonds. It ap.ear.d that the site on the p.p.ide that bound with tACE was influenced by the configur.tion of the amino acid, L or.D-for., at the C-ter.inal of the p.p.ide.

关键词： Angiotensin I-conver.ing enzyme p.p.ide inhibitor Molecular.docking Micr.wave-assisted solid-p.asesynthesis

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

A Theor.tical Study on p.r.lysis and Sensitivity of Ener.etic Comp.unds(Ⅴ)──Nitr. Der.vatives of Methylbenzene

引用

Chemical r.sear.h in Chinese universities 2000年第1期16卷 21-30页

作者： GU Zhi-ming FAN Jian-fen XIAO He-ming and DONG Hai-shan (Dep.r.ment of Chemistr., nanjing univer.ity of Science and Technology, nanjing 2.0094, p. r. china Dep.r.ment of Chemistr., Suzhou univer.ity, Suzhou 2.5006, p. r. china Institute of Chemical M 南京理工大学江苏南京 210094 苏州大学江苏苏州 215006 中国工程物理研究院化工材料所四川绵阳 610003

UHF-SCF-AM1 MO calculations wer. p.r.or.ed for.two kinds of p.r.lysis r.actions of seven nitr. der.vatives of methylbenzene(homolysis r.actions by the r.p.ur. of bond C-NO_2.into r.dicals and isomer.zation r.actions in the way of methyl H tr.nsfer.ing to the or.ho nitr. O atom). The molecular.geometr.es of the r.actants, the tr.nsition states and the p.oducts of the four.een r.actions wer. fully op.imized. The activation ener.ies for.these two kinds of r.actions have been obtained. The r.sults indicate that this categor. of comp.unds is mor. easily p.r.lyzed by being initiated via isomer.zation r.actions. A p.r.llel r.lationship.exists between the activation ener.y of the isomer.zation r.actions and the imp.ct sensitivity of the seven titled comp.unds.

关键词： Nitr. der.vatives of toluene p.r.lysis r.action UHF-SCF-AM1 MO calculation

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

A multicast r.uting algor.thm with multip.e tr.es

引用

Jour.al of Systems Engineer.ng and Electr.nics 2005年第2期16卷 426-432页

作者： Cui Xunxue 1,2., Gao Wei3 & Fang Hongyu41. New Star.r.sear.h Institute of Ap.lied Technology, Hefei 2.0031, p. r. china 2. Jiangsu Key Labor.tor. of Comp.ter.Infor.ation p.ocessing Technology,Soochow univer.ity, Suzhou 2.5006, p. r. china 3. Dep.r.ment of Electr.nic Engineer.ng and Infor.ation Science,univer.ity of Science and Technology of china, Hefei 2.002., p. r. china 4. School of Electr.nic Science and Technology, Anhui univer.ity, Hefei 2.0039, p. r. china New Star.r.sear.h Institute of Ap.lied Technology Hefei 230031 P. R. China 2. Jiangsu Key Labor.tor. of Comp.ter.Infor.ation p.ocessing Technology Soochow University Suzhou 215006 P. R. China Dep.r.ment of Electr.nic Engineer.ng and Infor.ation Science University of Science and Technology of China Hefei 230027 P. R. China School of Electr.nic Science and Technology Anhui University Hefei 230039 P. R. China

Quality of ser.ice (QoS) multicast r.uting has continued to be a ver. imp.r.ant r.sear.h top.c in the Inter.et. A method of multicast r.uting is p.op.sed to simultaneously op.imize sever.l p.r.meter. based on multiobjective genetic algor.thm, after.the r.lated wor. is r.viewed. The contr.bution lies on that the selection p.ocess of such r.uting is tr.ated with multiobjective op.imization. Differ.nt quality cr.ter.ons in Ip.networ. ar. taken into account for.multicast communications. A set of r.uting tr.es is gener.ted to ap.r.ximate the p.r.to fr.nt of multicast p.oblem. Multip.e tr.es can be selected fr.m the final set of nondominated solutions, and ap.lied to obtain a good over.ll link cost and balance tr.ffic distr.bution accor.ing to some simulation r.sults.

关键词： multicast r.uting quality of ser.ice multiobjective op.imization genetic algor.thms.

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Synthesis of 6-(Br.momethyl)-4-methoxy-5,6,7,8-tetr.hydr.p.r.do-[3,2.d]p.r.midin-2.ol fr.m 6-Methylp.r.midine-2.4-diol

引用

Chemical r.sear.h in Chinese universities 2012年第1期28卷 57-60页

作者： LIU Wei-dong2. DENG Xi-ling2. ZHANG Zhi-li2. WANG Xiao-wei2.and LIU Jun-yi1,2.1. State Key Labor.tor. of Natur.l and Biomimetic Dr.g, 2. Dep.r.ment of Chemical Biology, School of p.ar.aceutical Sciences, p.king univer.ity, Beijing 100191, p. r. china p.king Univ Sch Pharmaceut Sci State Key Lab Nat & Biomimet Drug Beijing 100191 Peoples R China p.king Univ Sch Pharmaceut Sci Dept Biol Chem Beijing 100191 Peoples R China

6-（Br.momethyl）-4-methoxy-5,6,7,8-tetr.hydr.p.r.do[3,2.d]p.r.midin-2.ol（comp.und 9） was synthe sized fr.m 6-methylp.r.midine-2.4-diol（comp.und 1） thr.ugh the cr.cial step. of 6-methyl alkylating and intr.mo lecular.cyclization. The assignment of the str.ctur. of comp.und 9 was p.r.or.ed by its sp.ctr.l data, 1H NMr. 13C NMr. HMBC, and Hr.S sp.ctr..

关键词： Heter.cycle Car.anion Alkylation r.duction Cyclization

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

p.p.lation-size-dep.ndent br.nching p.ocesses in Mar.ovian r.ndom envir.nments

引用

Chinese Science Bulletin 1998年第8期43卷 635-638页

作者： WANG Hanxing 1 and DAI Yonglong 2.1. Dep.r.ment of Mathematics, Shanghai univer.ity, Shanghai 2.1800, china 2. Dep.r.ment of Mathematics, Zhongshan univer.ity, Guangzhou 5102.5, china Dep.r.ment of Mathematics Shanghai University Shanghai China Dep.r.ment of Mathematics Zhongshan University Gunngzhou China

A br.nching model {Z n} n≥0is consider.d wher. the offsp.ing distr.bution of the p.p.lation’s evolution is not only dep.ndent on the p.p.lation size, but also contr.lled by a Mar.ovian envir.nmental p.ocess {ξ n} n≥0. For.this model, asymp.otic behaviour.is studied such as limn→∞Z n and limn→∞Z n/m n in the case that the mean m k, θof the offsp.ing distr.bution conver.es to m>1 as the p.p.lation size k gr.ws to ∞. In the case that {ξ n} n≥0is an ir.educible p.sitive r.cur.ent Mar.ov chain, cer.ain extinction (i.e. p.Z n=0 for.some n)=1) and noncer.ain extinction (i.e. p.Z n=0 for.some n)r. studied.

关键词： Mar.ov chains in r.ndom envir.nments stochastic p.p.lation models br.nching p.ocesses.

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

STUDY ON THE Fr.QUENCY AND p.INCIp.E OF FLOOD CATASTr.p.E IN THE CHANGJIANG DELTA AND ITS NEIGHBOr.NG r.GIONS IN THE LAST 2.00 YEAr.

引用

Chinese Geogr.p.ical Science 2001年第2期11卷 137-143页

作者： ZHANG Sheng，ZHU Cheng，ZHANG Qiang (Dep.r.ment of Ur.an and r.sour.es Sciences, nanjing univer.ity, nanjing 2.0093,p. r. china) Dep.r.ment of Ur.an and r.sour.es Sciences Nanjing University Nanjing P. R. China

Documented mater.als, esp.cially those about flooding catastr.p.e, ar. abundant comp.ehensive and well-p.eser.ed, which makes p.ssible the systematical collection of mater.als about histor.cal document about climate evolution in Changjiang (Yangtze) Delta r.gion and its neighbor.ng ar.as. We make good use of the excep.ional infor.ation to discuss the genesis and p.incip.e of flooding in this r.gion. Analysis shows that the main flooding p.r.ods in the studied r.gion in the last 2.00 year. wer. the Wester. Jin Dynasty, Easter. Jin Dynasty, Nor.her. and Souther. Dynasties, Souther. Song Dynasty, Yuan Dynasty, Ming Dynasty and Qing Dynasty. The p.r.ods with flooding p.ak values wer. the 4th centur., 5th centur., 7th centur., 9th centur., ear.y 12.h centur., ear.y 14th centur., mid-15th centur., and ear.y 18th centur. A.D. p.ssibility of r.ap.ear.nce of flooding p.ak value in the ear.y 2.st centur. will be gr.at, and the hazar. p.evention and the hazar. r.duction will be still har..

关键词： Changjiang Delta histor.cal flood fr.quently-occur.ed flood p.r.od flooding p.ak p.r.od

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

p.ep.r.tion of Immobilized ε-p.lylysine p.T Nonwoven Fabr.cs and Antibacter.al Activity Evaluation

引用

Jour.al of Wuhan univer.ity of Technology(Mater.als Science) 2011年第4期26卷 675-680页

作者：郝丽梅杨荆泉 Institute of medical Equip.ent the Academy of Military Medical Sciences National Biop.otection Engineer.ng Center

A novel antibacter.al mater.al （L-p.T） was p.ep.r.d by immobilizing ε-p.lylysine on p.lyethylene ter.p.thalate （p.T） nonwoven fabr.cs. Sur.ace modifications of the fabr.c wer. p.r.or.ed by using a chemical modification p.ocedur. wher. car.oxyl gr.up. wer. p.ep.r.d on the p.T sur.ace, a coup.ing agent was gr.fted, and the ε-p.lylysine was immobilized. Scanning electr.n micr.scop. （SEM） was used to analyze the sur.ace mor.0}ology of the fabr.cs, while the toluidine blue method and X-r.y p.otoelectr.n sp.ctr.scop. （Xp.） wer. used to evaluate the gr.fting densities. The antibacter.al activities of the L-p.T wer. investigated by using the shaking-flask method. The electr.n micr.gr.p.s showed that the sur.ace of the blank p.T and the modified fabr.cs did not change. The r.sults of Xp. analysis confir.ed that ε-p.lylysine was successfully gr.fted onto the sur.ace of p.T. The r.sults of the antibacter.al exp.r.ments showed that L-p.T fabr.cs had excellent antibacter.al activity against Escher.chia coli and Stap.ylococcus aur.us, and that L-p.T fabr.cs wer. stable in stor.ge for.at least two year..

关键词： p.T nonwoven fabr.c ε-p.lylysine immobilization antibacter.al activity antibacter.al mater.al

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：