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Proba.ilistic Globa. Ma.imum Power Point Tra.king a.gorithm for Continuously Va.ying Pa.tia. Sha.ing Conditions on a.tonomous PV Systems

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Energy a.d Power Engineering 2024年第1期16卷 21-42页

作者： kha Ba. khanh Ca. Vincent Boitier La.S-CNRS University of Toulouse Toulouse France

a.photovolta.c (PV) string with multiple modules with bypa.s diodes frequently deployed on a.va.iety of a.tonomous PV systems ma. present multiple power pea.s under uneven sha.ing. For optima. sola. ha.vesting, there is a.need for a.control schema.to force the PV string to opera.e a. globa. ma.imum power point (GMPP). While a.lot of tra.king methods ha.e been proposed in the litera.ure, they a.e usua.ly complex a.d do not fully ta.e a.va.ta.e of the a.a.la.le cha.a.teristics of the PV a.ra.. This work highlights how the volta.e a. opera.ing point a.d the forwa.d volta.e of the bypa.s diode a.e considered to design a.globa. ma.imum power point tra.king (GMPPT) a.gorithm with a.very limited globa. sea.ch pha.e ca.led Fa.t GMPPT. This a.gorithm successfully tra.ks GMPP between 94% a.d 98% of the time under a.theoretica. eva.ua.ion. It is then compa.ed a.a.nst Perturb a.d Observe, Deterministic Pa.ticle Swa.m Optimiza.ion, a.d Grey Wolf Optimiza.ion under a.sequence of irra.ia.ce steps a. well a. a.power-over-volta.e cha.a.teristics profile tha. mimics the electrica. cha.a.teristics of a.PV string under va.ying pa.tia. sha.ing conditions. Overa.l, the simula.ion with the sequence of irra.ia.ce steps shows tha. while Fa.t GMPPT does not ha.e the best convergence time, it ha. a. excellent convergence ra.e a. well a. ca.ses the lea.t a.ount of power loss during the globa. sea.ch pha.e. Experimenta. test under va.ying pa.tia. sha.ing conditions shows tha. while the GMPPT proposa. is simple a.d lightweight, it is very performa.t under a.wide ra.ge of dyna.ica.ly va.ying pa.tia. sha.ing conditions a.d boa.ts the best energy efficiency (94.74%) out of the 4 tested a.gorithms.

关键词： Photovolta.c PV Globa. Ma.imum Power Point Tra.king GMPPT Fa.t Va.ying Pa.tia. Sha.ing Conditions a.tonomous PV Systems GMPPT Review

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Developmenta. dependence for functiona. eye regrowth in Xenopus la.vis

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Neura. Regenera.ion Resea.ch 2018年第10期13卷 1735-1737页

作者： Cindy X.kha Kelly a.-Sun Tseng School of Life Sciences University of Nevada

Introduction：a.key cha.lenge in designing tissue repa.r stra.egies is knowing whether a.d how developmenta. mecha.isms a.e used for successful repa.r of ma.ure/a.ult *** it is known tha. developmenta. components a.e used in repa.r,it rema.ns mostly unclea. which ones a.e required a.d whether they a.t simila.ly a. during *** issue is further complica.ed by the fa.t tha. it is difficult.

关键词： Developmenta. dependence for functiona. eye regrowth in Xenopus la.vis Figure RI

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a.Compa.a.ive Study on Environmenta. Degra.a.ion of Sunda.ba.s due to Huma. Induced Ca.ses（2008-2018）

A Comparative Study on Environmental Degradation of Sundarba...

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作者： Sudipto Sa.ol kha 西南交通大学

学位级别：硕士

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a.Deep Lea.ning Model of Tra.fic Signs in Pa.ora.ic Ima.es Detection

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Intelligent a.toma.ion & Soft Computing 2023年第7期37卷 401-418页

作者： kha Tu Huynh Thi Phuong Linh Le Muha.ma. a.if Thien khai Tra. Interna.iona. University Ho Chi Minh CityVietnam-Vietnam National UniversityHo Chi Minh City700000Vietnam Depa.tment of Computer Science The Superior UniversityLahorePakistan Ho Chi Minh City University of Foreign La.gua.es a.d Informa.ion Technology Ho Chi Minh City700000Vietnam

To pursue the idea. of a.sa.e high-tech society in a.time when tra.fic a.cidents a.e frequent,the tra.fic signs detection system ha. become one of the necessa.y topics in recent yea.s a.d in the *** ultima.e goa. of this resea.ch is to identify a.d cla.sify the types of tra.fic signs in a.pa.ora.ic *** a.complish this goa.,the pa.er proposes a.new model for tra.fic sign detection ba.ed on the Convolutiona. Neura. Network for com-prehensive tra.fic sign cla.sifica.ion a.d Ma.k Region-ba.ed Convolutiona. Neura. Networks(R-CNN)implementa.ion for identifying a.d extra.ting signs in pa.ora.ic *** a.gmenta.ion a.d norma.iza.ion of the ima.es a.e a.so a.plied to a.sist in cla.sifying better even if old tra.fic signs a.e degra.ed,a.d considera.ly minimize the ra.es of discovering the extra.*** proposed model is tested on both the testing da.a.et a.d the a.tua. ima.es a.d gets 94.5%of the correct signs recognition ra.e,the cla.sifica.ion ra.e of those signs discovered wa. 99.41%a.d the ra.e of fa.se signs wa. only a.ound 0.11.

关键词： Deep lea.ning convolutiona. neura. network Ma.k R-CNN tra.fic signs detection

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Buckling a.a.ysis of FG Porous Trunca.ed Conica. Shells Resting on Ela.tic Founda.ions in the Fra.ework of the Shea. Deforma.ion Theory

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a.va.ces in a.plied Ma.hema.ics a.d Mecha.ics 2022年第1期14卷 218-247页

作者： Le kha Hoa.Bui Gia.Phi Do Qua.g Cha. Da.g Va. Hieu Milita.y a.a.emy of Logistics HanoiVietnam Depa.tment of Technica. Funda.enta. University of Transport Technology54 Trieu Khuc9 Thanh XuanHanoiVietnam Depa.tment of Mecha.ica. Engineering a.d Mecha.ronics PHENIKAA UniversityHanoi 12116Vietnam PHENIKa. Resea.ch a.d Technology Institute(PRa.I) A&A Green Phoenix Group JSCNo.167 Hoang NganTrung HoaCau GiayHanoi 11313Vietnam Tha.nguyen University of Technology ThainguyenVietnam

In this a.ticle,a. a.a.ytica. method is proposed to a.a.yze of the linea. buckling beha.ior of the FG porous trunca.ed conica. shells subjected to a.uniform a.ia. compressive loa. a.d resting on the Pa.terna. ela.tic *** ma.eria. properties including Young’s modulus,shea. modulus a.d density a.e a.sumed to va.y in the thickness *** types of FG porous distributions including symmetric porosity distribution,non-symmetric porosity a.d uniform porosity distribution a.e *** governing equa.ions of the FG porous trunca.ed conica. shells a.e obta.ned by using the first-order shea. deforma.ion theory(FSDT).With the help of the Ga.erkin method,the expressions for critica. buckling loa.s a.e obta.ned in closed *** relia.ility of the obta.ned results is verified by compa.ing the present solutions with the published ***,the numerica. results show the effects of shell cha.a.teristics,porosity distribution,porosity coefficient,a.d ela.tic founda.ion on the critica. buckling loa..

关键词： Buckling trunca.ed conica. shells first order shea. deforma.ion theory porous ma.eria.s ela.tic founda.ions

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a.Deep Tra.h Cla.sifica.ion Model on Ra.pberry Pi 4

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Intelligent a.toma.ion & Soft Computing 2023年第2期35卷 2479-2491页

作者： Thien khai Tra. kha Tu Huynh Da.-Nhuong Le Muha.ma. a.if Hoa.Minh Dinh Ho Chi Minh City University of Foreign La.gua.es a.d Informa.ion Technology Ho Chi Minh City700000Vietnam Interna.iona. University Ho Chi Minh CityVietnam-Vietnam National UniversityHo Chi Minh City70000Vietnam Fa.ulty of Informa.ion Technology Haiphong UniversityHaiphong180000Vietnam Depa.tment of Computer Science a.d Informa.ion Technology University of LahoreLahorePakistan

Environmenta. pollution ha. ha. substa.tia. impa.ts on huma. life,a.d tra.h is one of the ma.n sources of such pollution in most *** cla.si-ﬁca.ion from a.collection of tra.h ima.es ca. limit the overloa.ing of ga.ba.e dis-posa. systems a.d efﬁciently promote recycling a.tivities;thus,development of such a.cla.siﬁca.ion system is topica. a.d *** pa.er proposed a. effective tra.h cla.siﬁca.ion system tha. relies on a.cla.siﬁca.ion module embedded in a.ha.d-wa.e setup to cla.sify tra.h in rea. *** ima.e da.a.et isﬁrst a.gmented to enha.ce the ima.es before cla.sifying them a. either inorga.ic or orga.ic *** deep lea.ning–ba.ed ResNet-50 model,a. improved version of the ResNet model,is used to cla.sify tra.h from the da.a.et of tra.h *** experimenta. results,which a.e tested both on the da.a.et a.d in rea. time,show tha. ResNet-50 ha. a. a.era.e a.cura.y of 96%,higher tha. tha. of rela.ed ***,integra.ing the cla.siﬁca.ion module into a.Ra.pberry Pi computer,which con-trolled the tra.h bin slide so tha. ga.ba.e fell into the a.propria.e bin for inorga.ic or orga.ic wa.te,crea.ed a.complete tra.h cla.siﬁca.ion *** proves the efﬁciency a.d high a.plica.ility of the proposed system.

关键词： Tra.h cla.siﬁca.ion ResNet ra.pberry pi internet of things(IoT) deep lea.ning

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Results of Testing Ma.ze Hybrids on La.ds Shifting from Rice-Growing a.ea. of Less Efficiency in the Mekong Delta

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Journa. of a.ricultura. Science a.d Technology(B) 2015年第4期5卷 241-246页

作者： Le Quy kha Institute of a.ricultura. Sciences for Southern Vietna. 121 Nguyen Binh Khiem Street District 1 Ho Chi Minh City Vietnam

Foreca.ters predict tha. by 2020 there will be 4.5 or 5 million tons per a.num ma.ze supply deficiency in Vietna.. a. a.result of this projection, the government responded by shifting 80,000 ha.of low-efficiency rice production a.ea. into ma.ze production （2014-2015） a.d this a.ea.of production for ma.ze is expected to increa.e to 150,000 ha.by 2016-2020. Nevertheless, not a.l commercia. ma.ze hybrids could be suita.le for rice-growing la.d in the Mekong Delta.a.d a.na.iona. project of hybrid ma.ze development for Mekong Delta.ha. been conducted since ea.ly 2014. In the project, yield tria.s of 20 ma.ze hybrids, sourced from Vietna.ese institutions a.d the priva.e sector including Syngenta.（NK67） a.d Deka.b （DK9901）, were sown in Dong Tha., Ha. Gia.g a.d Long a. provinces situa.ed in the Mekong Delta. in minor a.id sulpha.e soils with a.pH of 5.0-5.5. The tria. included three replica.ions in a. a.pha.la.tice design conducted during spring-summer in 2014. The hybrids flowered a. 50-52 d a.ter pla.ting a.d physiologica.ly ma.ured between 93-97 d a.ter pla.ting. This suggested they would be suita.le for cropping systems, which wa. comprised of three sea.ons per yea.. To determine which hybrid is best suited for the region, resea.chers eva.ua.ed yield a.d ea. cha.a.teristics. The a.era.e yield of the genotypes a.ross loca.ions wa. 52.03, 54.92 a.d 57.60 quinta.s/ha. respectively, a.d the herita.ility of genotypes in ea.h loca.ion wa. 0.51, 0.81 a.d 0.61, respectively. The mea. yield of DK9901 wa. 58.19 quinta.s/ha. ra.king the 7th a.ong 20 hybrids, a.d NK67 wa. 47.58 quinta.s/ha. ra.king the 19th. The gra.d mea. wa. 54.92 quinta.s/ha.a.d herita.ility for a.l genotypes wa. 0.79. The highest yield wa. produced by the Southern seed compa.y hybrid SSC474 （69.39 quinta.s/ha., which yielded significa.tly more ma.ze tha. DK9901 （58.19 quinta.s/ha. a. P 〈 0.05, followed by VS71 from Na.iona. Ma.ze Resea.ch Institute （NMRI） a. 63.52 quinta.s/ha. a.d LCH9a.from NMRI a. 63.39 quin

关键词： Ma.ze (Zea.ma.s L.) hybrid Mekong Delta rice-growing la.d yield tria.s.

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Penta.idium-Ca.a.yzed Direct a.sembly of Vicina. a.l-Ca.bon Qua.erna.y Stereocenters through C(sp^(3))–C(sp^(3))Bond Forma.ion

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CCS Chemistry 2021年第10期3卷 2192-2200页

作者： Xu Ba. Yifa. Fa. Tua.-Khoa.kha Richmond Lee Choon Wee Kee Zhiyong Jia.g Choon-Hong Ta. Interna.iona. Scientific a.d Technologica. Coopera.ion Ba.e of Chira. Chemistry Henan UniversityKaifeng 475004 Division of Chemistry a.d Biologica. Chemistry Nanyang Technological UniversitySingapore 637371 School of Chemistry a.d Molecula. Bioscience University of WollongongWollongongNSW 2522 Molecula. Horizons University of WollongongWollongongNSW 2522 Process&Ca.a.ysis Resea.ch Institute of Chemical and Engineering SciencesSingapore 627899

The stereoselective construction of vicina. a.l-ca.bon qua.erna.y stereocenters ha. long been a.formida.le synthetic *** a.ymmetric coupling of a.tertia.y ca.bon nucleophile with a.tertia.y ca.bon electrophile is themost stra.ghtforwa.d a.proa.h,but it is sterica.ly a.d energetica.ly ***,we describe a.ca.a.ytic a.ymmetric substitution,where ra.emic tertia.y bromides coupled directly with ra.emic seconda.y or tertia.y ca.ba.ion.

关键词： ion-pa.red ca.a.yst a.y mmetric substitu-tion SN2 substitution SN2X substitution a.l-ca.bon qua.erna.y stere ocenters

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应用压力恢复测试法检测水和气的推进前沿

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油气田开发工程译丛 1992年第12期 13-17页

作者：赵钧 kha.,a.W

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电子束辐照对蓝莓的长效冷藏保鲜效果

电子束辐照对蓝莓的长效冷藏保鲜效果

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作者： NGUYEN XUa. kha 安徽农业大学

学位级别：硕士

蓝莓,杜鹃花科,越橘属,因其甜美的口味、丰富的营养成分、强大的保健功能,广受欢迎。由于皮质薄、果肉柔软多汁,采后呼吸代谢旺盛,蓝莓在常温(25℃±5℃)下放置2～4d,低温(2℃±2℃)下放置7～10d就失去商品价值,严重制约了蓝莓产业的发... 详细信息

蓝莓,杜鹃花科,越橘属,因其甜美的口味、丰富的营养成分、强大的保健功能,广受欢迎。由于皮质薄、果肉柔软多汁,采后呼吸代谢旺盛,蓝莓在常温(25℃±5℃)下放置2～4d,低温(2℃±2℃)下放置7～10d就失去商品价值,严重制约了蓝莓产业的发展。电子束辐照是一种物理加工方式,通过杀灭食物表面及内部的有害微生物、抑制生理变化,延长果实的保鲜期。本文通过设计不同的辐照剂量梯度 0.0kGy(未辐照为对照组)、1.0kGy、1.5kGy、2.0kGy、2.5kGy、3.0kGy,分析冷藏过程中蓝莓果实中的细菌、霉菌及酵母菌的杀灭效果,以及不同剂量电子束辐照对冷藏蓝莓果实贮藏品质、生理与功能特性的影响作用。1.1.0～3.0kGy剂量范围的电子束辐照处理,显著降低细菌、霉菌与酵母菌微生物的数量,并且与辐照剂量呈显著正相关关系。蓝莓中细菌、霉菌、酵母菌的D10值分别为 1.54 kGy、1.69 kGy、2.40 kGy。冷藏至 105 d,1.5～3.0 kGy 辐照蓝莓组微生物数量显著低于对照组,但是四个辐照组之间没有显著性差异。2.在整个冷藏期(105 d),辐照处理显著降低了蓝莓的腐烂率。贮藏末期,1.5～3.0kGy辐照组的失重率达到30%,但腐烂率低于8%,虽然失去鲜食价值,但依然具有加工价值。1.5～3.0kGy辐照组蓝莓保鲜期可达到60d,腐烂率低于5%,失重率15%左右。同时,各辐照处理组相比对照组,有效延缓蓝莓果皮的亮度(L值)下降、抑制果皮变色(a.与b值)。3.在贮藏前期,辐照处理对蓝莓的硬度没有显著性影响。贮藏至30～60d,2.0kGy辐照组果实硬度显著高于对照组。在贮藏后期,1.5～3.0kGy辐照组抑制了TSS和可溶性糖的降解,但对果实的pH值没有显著性影响。4.贮藏45d内,辐照处理组花青素和总酚含量显著高于对照组,尤其是1.5kGy辐照组花青素含量最高,3.0kGy辐照组总酚含量最高。各辐照处理组的DPPH自由清除率显著高于对照组,其中2.0kGy组效果最好。5.2.0～3.0kGy辐照处理显著提高了果实的多酚氧化酶(PPO)活,但1.0～1.5kGy的剂量对多酚氧化(PPO)酶活没有显著影响。在贮藏后期,1.5～2.0kGy辐照组的过氧化物酶(POD)活性显著高于对照组和其他辐照处理组;1.5～2.5kGy辐照组的局半乳糖醛酸酶(PG)活性,显著低于对照组;贮藏前期,1.5～2.5Gy辐照组的纤维素酶(Cx)活性显著低于对照组,延缓软化。综上所述,1.5kGy～2.0kGy剂量电子束辐照处理,能显著降低冷藏过程中蓝莓果实中的细菌、霉菌及酵母菌数量,蓝莓的品质及生理特性保持最佳,可延长蓝莓的保鲜期至60d,冷藏期90～105d。

关键词：蓝莓电子束辐照微生物冷藏保鲜

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