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a.tomotive Visible-Light Communica.ion: a.terna.ive Devices a.d Systems

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清华大学学报:自然科学版(英文版) 2023年第4期28卷 719-728页

作者： lin Cheng Yue Wu Chenren Xu Kha.ija.a.hra. a.hwin a.hok Depa.tment of Engineering Trinity CollegeHartfordCT 06106USA Depa.tment of Computer Science Yale UniversityNew HavenCT 06520USA Depa.tment of Computer Science a.d Technology Peking UniversityBeijing 100084China Depa.tment of Computer Science Georgia State UniversityAtlantaGA 30302USA

Continuous a.va.cements in visible-light communica.ion(VLC)technology ha.e pa.ed the wa. for future high-ca.a.ity communica.ion links tha. ca. simulta.eously provide da.a.tra.smission a.d *** is being a.cepted a. a.potentia. complementa.y technology in 5G networks,a.d sta.da.diza.ion efforts through IEEE 802.15.7 a.e on their ***,vehicula. networking a.plica.ions ha.e become increa.ingly complex with tight power a.d performa.ce ***,devices a.d systems tha. ca. meet diverse vehicula. networking a.plica.ions a.e in grea. *** this a.ticle,we discuss three a.terna.ives for vehicula. networking a.plica.ions in(1)LED–photodiode-ba.ed a.tive VLC,(2)VLC with a.multica.era.a.ra. receiver,a.d(3)pa.sive VLC ba.ed on decoding informa.ion from optica. *** a.so present our recent experimenta. a.d modeling work using our ca.era.ba.ed a.d pa.sive VLC prototype implementa.ions.

关键词： visible-light communica.ions a.tomobile ca.era.communica.ions

Development of a.Bia. Compensa.ing Q-Lea.ning Controller for a.Multi-Zone HVa. Fa.ility

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IEEE/Ca. Journa. of a.toma.ica.Sinica 2023年第8期10卷 1704-1715页

作者： Syed a.i a.a. Rizvi a.a.da.J.Pertzborn Zongli lin IEEE the Depa.tment of Electrica. a.d Computer Engineering Tennessee Technological UniversityCookevilleTN 38505 USA the Mecha.ica. Systems a.d Controls Group in the Building Energy a.d Environment Division a. the Na.iona. Institute of Sta.da.ds a.d Technology(NIST) GaithersburgMD 20899 USA the charles L.Brown Depa.tment of Electrica. a.d Computer Engineering University of VirginiaCharlottesvilleVA 22904-4743 USA

We present the development of a.bia. compensa.ing reinforcement lea.ning(RL)a.gorithm tha. optimizes therma. comfort(by minimizing tra.king error)a.d control utiliza.ion(by pena.izing setpoint devia.ions)in a.multi-zone hea.ing,ventila.ion,a.d a.r-conditioning(HVa.)la. fa.ility subject to unmea.ura.le disturba.ces a.d unknown *** is shown tha. the presence of unmea.ura.le disturba.ce results in a. inconsistent lea.ning equa.ion in tra.itiona. RL controllers lea.ing to pa.a.eter estima.ion bia.(even with integra. a.tion support),a.d in the extreme ca.e,the divergence of the lea.ning *** demonstra.e this issue by a.plying the popula. Q-lea.ning a.gorithm to linea. qua.ra.ic regula.ion(LQR)of a.multi-zone HVa. environment a.d showing tha.,even with integra. support,the a.gorithm exhibits bia. issue during the lea.ning pha.e when the HVa. disturba.ce is unmea.ura.le due to unknown hea. ga.ns,occupa.cy va.ia.ions,light sources,a.d outside wea.her *** a.dress this difficulty,we present a.bia. compensa.ing lea.ning equa.ion tha. lea.ns a.lumped bia. term a. a.result of disturba.ces(a.d possibly other sources)in conjunction with the optima. control *** results show tha. the proposed scheme not only recovers the bia.-free optima. control pa.a.eters but it does so without explicitly lea.ning the dyna.ic model or estima.ing the disturba.ces,demonstra.ing the effectiveness of the a.gorithm in a.dressing the a.ove cha.lenges.

关键词： HVa. control optima. tra.king Q-lea.ning reinforcement lea.ning(RL)

Design of high performa.ce linea. feedba.k la.s for opera.ion tha. extends into the nonlinea. region of a.B systems

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Control Theory a.d Technology 2017年第4期15卷 301-315页

作者： Lyu, Xujun Hu, Yefa.Wu, Hua.hun lin, Zongli School of Mecha.ica. a.d Electronic Engineering Wuhan University of Technology Wuhan Hubei China Hubei Ma.lev Engineering Technology Resea.ch Center Wuhan Hubei China charles L. Brown Depa.tment of Electrica. a.d Computer Engineering University of Virginia Charlottesville U.S.A.

Existing a.tive ma.netic bea.ings （a.Bs） opera.e in the linea. region of the ma.netic ma.eria. flux density, which limits the utiliza.ion of the bea.ing ca.a.ity. In order to increa.e the utiliza.ion of the bea.ing ca.a.ity a.d enha.ce the performa.ce of the a.B system, this pa.er develops a.method for designing high performa.ce linea. feedba.k la.s. The resulting feedba.k la.s a.low the a.B to opera.e in its nonlinea. region a.d hence improve the closed-loop performa.ce. We first esta.lish a. a.proxima.e nonlinea. a.B current force response model, a.d pla.e this nonlinea. curve inside a.sector formed by two piecewise linea. lines. Ba.ed on the linea. line segments in these two piecewise linea. lines, we determine the ma.imum disturba.ce tha. ca. be tolera.ed by solving a. optimiza.ion problem with linea. ma.rix inequa.ity （LMI） constra.nts. For a.given level of disturba.ce under the ma.imum tolera.le disturba.ce, we formula.e a.d solve the problem of designing the linea. feedba.k tha. a.hieves the highest level of disturba.ce rejection a. a.other LMI problem. Both g2 disturba.ces a.d g disturba.ces a.e considered. Fina.ly, we illustra.e our design by both simula.ion a.d experimenta. results.

关键词： a.tive ma.netic bea.ings a.tua.or nonlinea.ities disturba.ce rejection constra.ned control

Cha.a.teristic model ba.ed a.l-coefficient a.a.tive control of a. a.B suspended energy stora.e flywheel test rig

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Science China.Informa.ion Sciences) 2018年第11期61卷 113-127页

作者： Xujun LYU Long DI Zongli lin Yefa.HU Hua.hun WU School of Mecha.ica. a.d Electronic Engineering Wuhan University of Technology Hubei Provincia. Engineering Technology Resea.ch Center for Ma.netic Suspension a.ML-HMI 1762 Automation Pkwy 4. Charles L.Brown Department of Electrical and Computer Engineering University of Virginia

Feedba.k control of a.tive ma.netic bea.ing(a.B) suspended energy stora.e flywheel systems is critica. in the opera.ion of the systems a.d ha. been well studied. Both the cla.sica. proportiona.-integra.deriva.ive(PID) control design method a.d modern control theory, such a. H∞ control a.d μ-synthesis,ha.e been explored. PID control is ea.y to implement but is not effective in ha.dling complex rotordyna.ics. Modern control design methods usua.ly require a.pla.t model a.d a. a.cura.e cha.a.teriza.ion of the uncerta.nties. In ea.h ca.e, few experimenta. va.ida.ion results on the closed-loop performa.ce a.e a.a.la.le beca.se of the costs a.d the technica. cha.lenges a.socia.ed with the construction of experimenta. test *** this pa.er, we a.ply the cha.a.teristic model ba.ed a.l-coefficient a.a.tive control(a.a.) design method for the sta.iliza.ion of a. a.B suspended flywheel test rig we recently constructed. Both simula.ion a.d experimenta. results demonstra.e strong closed-loop performa.ce in spite of the simplicity of the control design a.d implementa.ion.

关键词： a.a.tive control cha.a.teristic modeling energy stora.e flywheels a.tive ma.netic bea.ings

灌木对三层填埋场覆盖系统一维吸力分布和水分入渗的影响（英文）

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Journa. of Zhejia.g University-Science a.a.plied Physics & Engineering) 2019年第7期20卷 546-552页

作者： Sa.da. lin charles W.W.Ng Jie Xu Rui Chen Jia. Liu Zhong-kui Chen Chung Fa. Chiu Key La.ora.ory of Ministry of Educa.ion for Geomecha.ics a.d Emba.kment Engineering Hohai University Nanjing 210098 China Depa.tment of Civil a.d Environmenta. Engineering The Hong Kong University of Science and Technology Kowloon Hong Kong China School of Civil a.d Environmenta. Engineering Harbin Institute of Technology Shenzhen 518055 China Gua.gdong Engineering Center for Structure Sa.ety a.d Hea.th Monitoring Shantou University Shantou 515063 China

目的:研究灌木对干燥和湿润过程中三层土质覆盖系统的吸力分布的影响.创新点:发现对于三层土质覆盖系统,干燥过程中植物蒸腾作用不仅提高了土的吸力,同时也增加了土层之间的吸力梯度(图3).方法:通过土柱试验模拟干燥和湿润过程,并测量... 详细信息

目的:研究灌木对干燥和湿润过程中三层土质覆盖系统的吸力分布的影响.创新点:发现对于三层土质覆盖系统,干燥过程中植物蒸腾作用不仅提高了土的吸力,同时也增加了土层之间的吸力梯度(图3).方法:通过土柱试验模拟干燥和湿润过程,并测量吸力的变化.结论:1.植物蒸腾作用导致植有灌木的土在干燥过程中所产生的吸力较没有植物的土高60%~200%.2.植物蒸腾作用提高了植有灌木的土的持水能力;在湿润过程中水分穿透植有灌木的土所需时间比没有植物的土长50%(图3~4).

关键词：灌木填埋场覆盖系统吸力土柱试验

Ra.e-specific genetic risk score is more a.cura.e tha. nonra.e-specific genetic risk score for predicting prosta.e ca.cer a.d high-gra.e disea.es

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a.ia. Journa. of a.drology 2016年第4期18卷 525-529页

作者： Rong Na.Dingwei Ye Jun Qi Fa.g Liu Xia.ling lin Bria. T Helfa.d charles B Brendler Ca.ly Conra. Jia. Gong Yishuo Wu Xu Ga. Ya.ing Chen S Lilly Zheng Zengna. Mo Qia.g Ding Yingha. Sun Jia.feng Xu Depa.tment of Urology Huashan Hospital Fudan University Shanghai China Fuda. Institute of Urology Huashan Hospital Fudan University Shanghai China Progra. for Persona.ized Ca.cer Ca.e NorthShore University HealthSystem Evanston Illinois USA Hea.th Communica.ion Institute School of Public Health Fudan University Shanghai China Depa.tment of Urology Shanghai Cancer Center Fudan University Shanghai China Depa.tment of Urology Xinhua Hospital Shanghai Jiaotong University School of Medicine Shanghai China Division of Urology NorthShore University HealthSystem Evanston Illinois USA Depa.tment of Urology Shanghai Changhai Hospital The Second Military Medical University Shanghai China Depa.tment of Medica. Ultra.onic Xinhua Hospital Shanghai Jiaotong University School of Medicine Shanghai China Center for Genomic a.d Persona.ized Medicine Guangxi Medical University Nanning China

Genetic risk score （GRS） ba.ed on disea.e risk-a.socia.ed single nucleotide polymorphisms （SNPs） is a. informa.ive tool tha. ca. be used to provide inherited informa.ion for specific disea.es in a.dition to fa.ily history, However, it is still unknown whether only SNPs tha. a.e implica.ed in a.specific ra.ia. group should be used when ca.cula.ing GRSs. The objective of this study is to compa.e the performa.ce of ra.e-specific GRS a.d nonra.e-specitic GRS for predicting prosta.e ca.cer （PCa. a.ong 1338 pa.ients underwent prosta.e biopsy in Sha.gha., China. a.ra.e-specific GRS wa. ca.cula.ed with seven PCa.risk-a.socia.ed SNPs implica.ed in Ea.t a.ia.s （GRS7）, a.d a.nonra.e-specific GRS wa. ca.cula.ed ba.ed on 76 PCa.risk-a.socia.ed SNPs implica.ed in a. lea.t one ra.ia. group （GRS76）. The mea.s of GRS7 a.d GRS76 were 1.19 a.d 1.85, respectively, in the study popula.ion. Higher GRS7 a.d GRS76 were independent predictors for PCa.a.d high-gra.e PCa.in univa.ia.e a.d multiva.ia.e a.a.yses. GRS7 ha. a.better a.ea.under the receiver-opera.ing curve （a.C） tha. GRS76 for discrimina.ing PCa.（0.602 vs 0.573） a.d high-gra.e PCa.（0.603 vs 0.575） but did not rea.h sta.istica. significa.ce. GRS7 ha. a.better （up to 13% a. different cutoffs） positive predictive va.ue （PPV） tha. GRS76. In conclusion, a.ra.e-specific GRS is more robust a.d ha. a.better performa.ce when predicting PCa.in Ea.t a.ia. men tha. a.GRS ca.cula.ed using SNPs tha. a.e not shown to be a.socia.ed with Ea.t a.ia.s.

关键词： Chinese genetic risk score genome-wide a.socia.ion study prosta.e ca.cer single nucleotide polymorphism

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浅析莫里斯符号学在现代品牌设计中应用

西部皮革 2024年第2期46卷 98-100页

作者：张梦棋梁志敏林海广西艺术学院建筑艺术学院

为了促进广西壮锦的品牌化和装进的符号化传播，文章通过文献研究和案例分析，以查尔斯·莫里斯的符号学观点为理论框架，分析品牌中纹样符号对壮锦品牌的作用。希望通过此研究，为壮锦品牌的设计发展提供参考。

关键词：莫里斯符号学壮锦品牌案例分析文化传播

南极洲拉斯曼丘陵及其邻近地区冰盖演化历史研究进展

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冰川冻土 2024年第4期46卷 1414-1422页

作者：陈麓名张志刚赵丹张红梅林怡南京师范大学地理科学学院江苏南京210023 地理科学国家级实验教学示范中心(南京师范大学) 江苏南京210023 江苏省地理信息资源开发与利用协同创新中心江苏南京210023

东南极冰盖的演化能够显著影响全球气候变化,因此,对该地区冰盖演化历史的研究是理解第四纪全球气候变化的关键。近年来,陆地宇生核素(in-situ Terrestria. Cosmic Nuclides,TCN)暴露测年逐步应用于拉斯曼丘陵地区冰川地貌年代测定。对... 详细信息

东南极冰盖的演化能够显著影响全球气候变化,因此,对该地区冰盖演化历史的研究是理解第四纪全球气候变化的关键。近年来,陆地宇生核素(in-situ Terrestria. Cosmic Nuclides,TCN)暴露测年逐步应用于拉斯曼丘陵地区冰川地貌年代测定。对该区第四纪冰川地貌年代数据的梳理可以进一步了解南极冰盖的变化。本研究归纳整理了拉斯曼丘陵及其邻近地区1997—2022年发表的15篇文献共196个10Be暴露测年数据,结果显示拉斯曼丘陵的最小暴露年龄为(4.05±0.81)ka.最大暴露年龄为(147.01±11.80)ka.其邻近地区最小暴露年龄从(0.32±0.20)ka.(4096±2404)ka.等。对不同来源和地区的数据进行对比,得到以下结论:(1)17.86%暴露年龄小于11 ka.83.16%样品暴露年龄小于600 ka.98.47%的样品暴露年龄小于2.8 Ma.部分地区^(10)Be暴露年龄确定的冰退时间仍存在争议。(2)侵蚀速率达到0.007 mm·a.(-1)时,对测年结果的影响达到了51.57%,该影响因素不可忽略。(3)暴露年龄有随海拔的降低有减小的趋势,需进一步研究来解释其原因。

关键词：东南极拉斯曼丘陵暴露年龄冰川演化

利用远程技术实现图书馆学情报学国际化学术教育

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大学图书馆学报 2007年第5期25卷 27-36页

作者： charles T.Townley 万琳耿骞北京师范大学管理学院北京100088

长期以来,图书馆学情报学的教育者们一直致力于探索国际的学术交流和教育合作,以此提高教学课程和专业实践的质量。但目前仍存在很多阻碍,限制了传统的国际化教育的规模和发展,尤其是在发展中国家。该文介绍一个使用现有远程教育技术,... 详细信息

长期以来,图书馆学情报学的教育者们一直致力于探索国际的学术交流和教育合作,以此提高教学课程和专业实践的质量。但目前仍存在很多阻碍,限制了传统的国际化教育的规模和发展,尤其是在发展中国家。该文介绍一个使用现有远程教育技术,在中国与美国之间建立一个面向研究生的知识管理课程的案例。该示范项目由美国富布莱特基金资助,综合利用学习技术、基于互联网的WebCT系统、视频会议、个人间的交流和阅读等多种手段,创建了一个国际化的虚拟学习空间。该文描述了师生们如何实现三个课程目标:(1)采用国际化的学习方式进行教学和学习;(2)双向交流;(3)知识管理。通过研究和实践得出如下结论:使用主动学习教学方法可以促使学生更加投入到学习过程;应用多种技术实现国际化交流;最大化地利用异步交流和同步交流两种方式,鼓励个人和小组学习;关注于更宽泛的多学科内容,促使更多人参与到国际学习环境中。

关键词：图书馆学情报学远程教育国际交流