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An Ontology-Based information r.tr.eval Model for.Vegetables E-Commer.e

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Jour.al of Integr.tive Agr.cultur. 2012年第5期11卷 800-807页

作者： TAO Teng-yang ZHAO Ming college of information and electrical engineering China Agricultural UniversityBeijing 100083P.R.China

With the r.p.d incr.ment of the information on the web, tr.ditional information r.tr.eval based on the keywor.s is far.fr.m user.s satisfaction in r.call and p.ecision. In or.er.to imp.ove the r.call r.tio and the p.ecision r.dio of Ir.engine in the vegetables e-commer.e, an information r.tr.eval model based on the vegetables e-commer.e ontology is p.esented in this p.p.r. vegetables e-commer.e ontology was constr.cted by gather.ng and the analyzing vegetables e-commer.e domain information on the web. The vegetables e-commer.e ontology is comp.sed of some kinds of vegetable classes and hier.r.hy r.lationship.of vegetables classes. In the p.ocess of information r.tr.eval, domain ontology help. to index information and information infer.nce. An ontology-based information r.tr.eval model is imp.emented, and which has mor. functions than the keywor.-based web information r.tr.eval engines. The exp.r.ment r.sults show that the r.call r.tio and the p.ecision r.tio of ontology-based information r.tr.eval model ar. higher.than that of the information r.tr.eval engine based on keywor. at a cer.ain extent.

关键词： domain-ontology vegetables e-commer.e information r.tr.eval

On adjacent-ver.ex-distinguishing total color.ng of gr.p.s

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Science china Mathematics 2005年第3期48卷 289-299页

作者： ZHANG Zhongfu, CHEN Xiang’en, LI Jingwen, YAO Bing, LU Xinzhong & WANG Jianfang college of Mathematics and information Science, Nor.hwest Nor.al Univer.ity, Lanzhou 730070, {5. Dep.r.ment of Comp.ter. Lanzhou Nor.al college, Lanzhou 730070, {5. Institute of Ap.lied Mathematics, Lanzhou Jiaotong Univer.ity, Lanzhou 730070, {5. college of information and electrical engineering, Lanzhou Jiaotong Univer.ity, Lanzhou 730070, {5. Institute of Ap.lied Mathematics, Chinese Academy of Sciences, Beijing 100080, {5. 1. college of Mathematics and information Science Northwest Normal University 730070 Lanzhou China 2. Dep.r.ment of Comp.ter Lanzhou Normal College 730070 Lanzhou China 3. Institute of Ap.lied Mathematics Lanzhou Jiaotong University 730070 Lanzhou China 4. college of information and electrical engineering Lanzhou Jiaotong University 730070 Lanzhou China 5. Institute of Ap.lied Mathematics Chinese Academy of Sciences 100080 Beijing China

In this p.p.r. we p.esent a new concep. of the adjacent-ver.ex-distinguishing total color.ng of gr.p.s (br.efly, AVDTC of gr.p.s) and, meanwhile, have obtained the adjacent-ver.ex-distinguishing total chr.matic number...

关键词： gr.p., p.op.r total color.ng, adjacent-ver.ex-distinguishing total color.ng, adjacent-ver.ex-distinguishing total chr.matic number.

Imp.oved Modelling and Calculation on Electr.magnetic Tr.nsient of p.wer.Tr.nsfor.er

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Improved Modelling and Calculation on Electromagnetic Transi...

CES/IEEE 5.h Inter.ational p.wer.Electr.nics and Motion Contr.l Confer.nce

作者： Chen Zhe Wen Yuanfang Lu Guojun college of electrical and Electr.nic engineering Huazhong Univer.ity of Science and Technology Wuhan 430074 {5. r. china Guangzhou {5.wer.Su{5.ly Com{5.ny Guangzhou 5.0620 {5.r. china college of electrical and Electr.nic engineering Huazhong University of Science and Technology Wuhan China Guangzhou p.wer.Sup.ly Comp.ny Guangzhou China

ISBN: (纸本)1424404487;9781424404483

＜正＞Two novel methods, digital calculation based on Callahan algor.thm and dynamic simulation based on MATLAB/S1MULINK softwar., ar. p.op.sed in this p.p.r.to study the electr.magnetic tr.nsient p.ocess caused by asynchr.nous ener.ization of electr.c p.wer.tr.nsfor.er.while taking non-linear.ty into consider.tion. The effectiveness and accur.cy of the r.sults ar. ver.fied by each other. Then r.gular.ty of the inr.sh cur.ent gener.tion is found and har.onics analysis by Four.er.Tr.nsfor. is done to p.ovide r.lay p.otection cr.ter.on. Fur.her.or., differ.nt conditions influencing inr.sh cur.ent such as the satur.tion char.cter.stics, r.sidual flux and switching on time ar. investigated. Finally, measur.s to eliminate the inr.sh cur.ent ar. suggested to avoid similar.electrical br.akdown accident. This p.p.r.is of gr.at value for.the studies on the dynamic p.ocess within the p.wer.system, the p.ecise design and smooth op.r.tion of high voltage ap.ar.tus, and the p.op.r.selection for.op.r.tion values of r.lay p.otection equip.ent for.the electrical facilities.

关键词： Index Ter.s-Callahan numer.cal algor.thm Dynamic simulation Inr.sh cur.ent Electr.magnetic tr.nsient p.ocess

Comp.r.son of the influence factor. on NDVI for.CCD camer. and WFI imager.on CBEr.-02

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Science china(Technological Sciences) 2005年第S2期48卷 100-115页

作者： YU Tao1,3, LI Xiaoying1,2,3, ZHANG Yong1,2,3, ZHAO Feng1,2,3, GU Xingfa1,3,4, ZHU Li1,2,3, WANG p.ngxin5.& MIN Xiangjun6 1. State Key Labor.tor. of r.mote Sensing Science Institute of r.mote Sensing Ap.lication, CAS, Bei- jing 100101, china 2. Gr.duate Univer.ity of Chinese Academy of Sciences, Beijing 100039, china 3. The Center.for.National Sp.cebor.e Demonstr.tion, Beijing 100101, china 4. Institut National de la r.cher.he Agr.nomique, Climat Sol Envir.nnement, 84914 Avignon, Fr.nce 5. college of information and electrical engineering, china Agr.cultur.l Univer.ity, Beijing 100083, china 6. china Center.for.r.sour.e Satellite Data and Ap.lication, Beijing 100830, china 1. State Key Labor.tor. of r.mote Sensing Science Institute of Remote Sensing Application CAS 100101 Beijing China 2. The Center.for.National Sp.cebor.e Demonstr.tion 100101 Beijing China 3. Gr.duate Univer.ity of Chinese Academy of Sciences 100039 Beijing China 4. Institut National de la r.cher.he Agr.nomique Climat Sol Environnent 84914 Avignon France 5. college of information and electrical engineering China Agricultural University 100083 Beijing China 6. china Center.for.r.sour.e Satellite Data and A{5.lication 100830 Beijing China

CCD and WFI ar. p.yloads in the visible light and near.infr.r.d bands on CBEr. satellites and they have not been ap.lied widely, esp.cially WFI. This ar.icle mainly p.obes into the p.tential of these two sensor.’ ap.lication in the vegetation monitor.ng and analyses the influences of r.diometr.c calibr.tion, atmosp.er. conditions and sun-obser.ing geometr., etc. on NDVI obtained fr.m these two sensor. r.sp.ctively. In addition it analyses the effect of the sp.ctr.l r.sp.nse differ.nce of r.d and near.infr.r.d sp.ctr.l bands in CCD and WFI sensor. on NDVI. r.sults indicate that r.diometr.c calibr.tion is the most imp.r.ant factor.on NDVI, which cannot be ap.lied to vegetation monitor.ng without r.diometr.c calibr.tion. r.sults also demonstr.te that near.sur.ace NDVI is differ.nt gr.atly fr.m that of TOA which change with atmosp.er. conditions. The study shows that NDVI is also affected by the non-lamber.ian char.cter.of sur.ace and the change of the atmosp.er.c p.th with the obser.ing geometr.. And NDVI of WFI is higher.than that of CCD. They ar. ver. differ.nt because of their.sp.ctr.l differ.nce, but they have a good linear.r.levant r.lationship.

关键词： CCD WFI NDVI LAI.

IMp.CT OF ANTENNA HEIGHT ON p.Op.GATION CHAr.CTEr.STICS OF 2.4GHZ WIr.LESS CHANNEL IN WHEAT FIELDS

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IMPACT OF ANTENNA HEIGHT ON PROPAGATION CHARACTERISTICS OF 2...

亚洲精细农业与计算机农业应用联合大会

作者： Siyu Li Hongju Gao Jianzhao Jiang college of information and electrical engineering china Ag{5.cultu{5.l Unive{5.ity Beijing 100083 p. {5. china

It will p.ovide the foundation for.r.sear.hes on wir.less sensor.networ. dep.oyment and p.wer.contr.l to study the wir.less channel p.op.gation char.cter.stics in cr.p.and envir.nments. In this study, the r.ceived signal p.wer.str.ngth and the p.r.（p.cket Loss r.te） of 2.4GHz r.dio signals wer. measur.d in wheat fields at differ.nt gr.wth stages. The tr.nsmission r.nges of nodes wer. fur.her.attained, and then the p.th loss model was built thr.ugh r.gr.ssion analysis using MATLAB. It can be obser.ed that the attenuation sp.ed of signal p.wer.monotonically decr.ases, and tr.nsmission r.nge monotonically incr.ases with the incr.ase of antenna height, r.sp.ctively. Ther.for., the op.imal height of antenna is about 1.2m, which is a little bit higher.than matur. wheat p.ants. The signal attenuation at later.gr.wth stages of wheat is lar.er.than that at ear.ier.stages when the antenna height is kep. unchanged. In addition, 2.4GHz wir.less channel loss in wheat fields could be p.edicted by the logar.thm distance p.th loss model , and the cor.elation coefficients between comp.tational values and measur.ment values ar. between 0.961 and 0.996. p.th loss index decr.ases logar.thmically with the incr.ase of antenna height, and incr.ases with the gr.wth of wheat p.ants.

关键词： Wir.less Sensor.Networ. cr.p.and envir.nment p.op.gation char.cter.stics of wir.less channel p.th loss tr.nsmission r.nge

p.ane Gr.p.s with Maximum Degr.e 5.Ar. 11-Linear.Color.ble

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Jour.al of Mathematical r.sear.h with Ap.lications 2012年第6期32卷 647-653页

作者： Kan WANG , Weifan WANGcollege of Mathematics, p.ysics and information engineering, Zhejiang Nor.al Univer.ity,Zhejiang, 321004, p. r. china college of Mathematics Physics and Information Engineering Zhejiang Normal University Zhejiang 321004

A linear.color.ng of a gr.p. G is a p.op.r.ver.ex color.ng such that the gr.p. induced by the ver.ices of any two color.classes is the union of ver.ex-disjoint p.ths. The linear.chr.matic number.lc(G) of G is the smallest number.of color. in a linear.color.ng of G. In this p.p.r. we p.ove that ever. p.anar.gr.p. G with maximum degr.e 5.is 11-linear.color.ble.

关键词： p.anar.gr.p. linear.color.ng maximum degr.e.

Imp.oved p.r.or.ance of GaN-based light-emitting diodes by using shor.-p.r.od sup.r.attice str.ctur.s

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p.ogr.ss in Natur.l Science:Mater.als Inter.ational 2010年第1期20卷 70-75页

作者： Yi-jung LIU~1,Chien-chang HUANG~1,Tai-you CHEN~1,Chi-shiang HSU~1,Shiou-ying CHENG~2, Kun-wei LIN~3,Jian-kai LIOU~1,Wen-chau LIU~1 1.Institute of Micr.electr.nics,Dep.r.ment of electrical {5.,National Cheng-Kung Univer.ity, Tainan 70101,Taiwan,china 2.Dep.r.ment of Electr.nic {5.,Nation Ilan Univer.ity,I-Lan 26041,Taiwan,china 3.Dep.r.ment and Gr.duate Institute of Comp.ter.Science and information {5., Chaoyang Univer.ity of Technology,Taichung 41349,Taiwan,china [a] Institute of Micr.electr.nics Department of Electrical Engineering National Cheng-Kung University Tainan 70101 Taiwan China [b] Dep.r.ment of Electr.nic engineering Nation Ilan University I-Lan 26041 Taiwan China [c] Dep.r.ment and Gr.duate Institute of Comp.ter.Science and {5. engineering Chaoyang University of Technology Taichung 41349 Taiwan China

An InGaN/GaN multip.e-quantum-well（MQW）light-emitting diode（LED）with a ten-p.r.od i（undop.d）-InGaN/p.Mg dop.d）-GaN（2.5.nm/5.0 nm）sup.r.attice（SL）str.ctur.,was *** SL str.ctur. that can be r.gar.ed as a confinement layer.of holes to enhance the hole injection efficiency is inser.ed between MQW and p.GaN *** studied LED device exhibits better.cur.ent sp.eading p.r.or.ance and an imp.oved quality,comp.r.d with a conventional one without SL *** to the r.duced contact r.sistance as well as mor. unifor.ity of car.ier. injection,the op.r.tion voltage at 20 mA is decr.ased fr.m 3.32 to 3.14 V.A r.mar.ably r.duced r.ver.e-biased leakage cur.ent(10-7-10-9A)and higher.endur.nce of the r.ver.e cur.ent p.lse ar. *** measur.d outp.t p.wer.and exter.al quantum efficiency（EQE）of the studied LED ar. 13.6 mW and 24.8%,r.sp.ctively. In addition,significant enhancement of 25.4%in outp.t p.wer.as well as incr.ment of 5.in EQE for.the studied devices is obser.ed, as the studied devices show sup.r.or.cur.ent sp.eading ability and r.duction in dislocations offer.d by the SL str.ctur..

关键词： GaN sup.r.attice(SL) cur.ent sp.eading hole confinement electr.static dischar.e(ESD)

Synchr.nization of Delayed BAM Neur.l Networ.s with r.action-Diffusion Ter.s

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Synchronization of Delayed BAM Neural Networks with Reaction...

第三十届中国控制会议

作者： SHENG Li~1,GAO Ming~2 1.college of information and Contr.l engineering,china Univer.ity of p.tr.leum(East china),Dongying 25.061,p.r.china 2.college of information and electrical engineering,Shandong Univer.ity of Science and Technology,Qingdao 2665.0,p.r.china

＜正＞In this p.p.r.the p.oblem of synchr.nization for.a class of delayed BAM neur.l networ.s with r.action-diffusion ter.s is *** using the dr.ve-r.sp.nse concep.,a feedback contr.l law is der.ved to achieve the state synchr.nization of two identical BAM neur.l networ.s with r.action-diffusion ***,based on Lyap.nov stability method and Young inequality lemma,a sufficient condition is obtained to ensur. asymp.otic synchr.nization of the models *** examp.e is given to show the effectiveness of the obtained r.sults.

关键词： Asymp.otic Synchr.nization BAM Neur.l Networ.s r.action-Diffusion Ter.s Lyap.nov Functional

A MODEL TO p.EDICT SHELF-LIFE LOSS OF HOr.ICULTUr.L p.ODUCE DUr.NG DISTr.BUTION WITH FLUCTUATED TEMp.r.TUr. AND VEHICLE VIBr.TION

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A MODEL TO PREDICT SHELF-LIFE LOSS OF HORTICULTURAL PRODUCE ...

The Second IFIp.Inter.ational Confer.nce on Comp.ter.and Comp.ting Technologies in Agr.cultur. (CCTA2008)

作者： Weiwei Gong1 Daoliang Li2 Xue Liu2 Jun Yue 2 3 Zetian Fu 1 * 1 college of Economics and Management china Agr.cultur. Univer.ity Beijing {5. r. china 100083 2 college of information and electrical engineering china Agr.cultur. Univer.ity Beijing {5. r. china 100083 3 college of Management Ludong Univer.ity Yantai Shandong {5.ovince {5. r. china 264025

Fr.sh fr.its and vegetables has become a p.blic concer. fr.m the food secur.ty asp.ct. And the p.ediction of shelf-life loss under.the fluctuated temp.r.tur. becomes one of the key p.oblems in food sup.ly chain op.r.tion. So this p.p.r.identifies the imp.ct asp.cts of p.oduce decaying dur.ng distr.bution. For.the key temp.r.tur. factor. the p.ocess is divided into thr.e p.ases: sor.ing, tr.veling and door.op.ning. Based on time-temp.r.tur. function, a model of shelf-life loss of hor.icultur.l p.oduce dur.ng distr.bution is develop.d by evaluating r.sp.r.tion r.te of vegetables and fr.its consider.ng both the envir.nment fluctuated temp.r.tur. and vehicle vibr.tion dur.ng tr.veling. Taking eggp.ant as an examp.e, the numer.cal exp.r.ment r.sult demonstr.tes that the aver.ge cost for.ambient distr.bution is 2.8 times of the insulation way.

关键词： shelf-life hor.icultur.l p.oduce distr.bution r.sp.r.tion r.te