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高阶神经网络与太阳黑子序列

华南理工大学学报（自然科学版） 1997年第11期25卷 36-35页

作者：李金艳余英林 tommyw.s.chow 华南理工大学无线电与自动控制研究所广州510641 香港城市大学电子工程系

一阶神经网络的函数逼近理论虽已研究得相当深入,但对高阶神经网络在这方面的研究却报道甚少.本文给出了高阶神经网络的逼近理论.其具体内容是:如果网络的激励函数σ∈C~∞不是一个多项式,那么高阶神经网络能够以任意精度逼近任意定义... 详细信息

一阶神经网络的函数逼近理论虽已研究得相当深入,但对高阶神经网络在这方面的研究却报道甚少.本文给出了高阶神经网络的逼近理论.其具体内容是:如果网络的激励函数σ∈C~∞不是一个多项式,那么高阶神经网络能够以任意精度逼近任意定义在紧集上的连续函数.根据这个理论,可知稀疏或部分连接的高阶神经网络象全连接的网络一样能够逼近任意连续函数.基于此观点,我们设计了一个稀疏连接的高阶网络和另一个具有相同数目连接权的一阶神经网络,并把它们应用于太阳黑子序列进行逼近和预测.模拟实验结果表明,不论在收敛速度还是在推广能力方面,稀疏连接的高阶神经网络都优于一阶神经网络.

关键词：逼近高阶神经网络稀疏连接收敛特性推广能力太阳黑子序列

sungai Lembing’s green tourism: Pioneering the future of resourcebased urban renewal

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The Innovation 2024年第3期5卷 19-20页

作者： Haoxuan Yu Ginura Gunaratna Izni Zahidi chow Ming Fai Department of Civil Engineering School of EngineeringMonash University MalaysiaBandar SunwaySelangor 47500Malaysia

HOW DID sUNGAI LEMBING PAVE ITs PATH TO A GREEN EVOLUTION?sungai Lembing,a resource-based town situated in Pahang,Malaysia,has historically positioned itself as a pivotal hub in the global tin mining ***,sungai Lembing’s history dates back to the Paleozoic and Mesozoic *** eras were marked by the closure of the Tethyan Ocean and the convergence of continental landmasses from the eastern part of the Gondwana *** complex geological background resulted in a wide variety of mineral resources.

关键词： situated eastern Pioneer

Quantitative and qualitative subgenomic RNA profiles of sARs-CoV-2 in respiratory samples: A comparison between Omicron BA.2 and non-VOC-D614G

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Virologica sinica 2024年第2期39卷 218-227页

作者： Zigui Chen Rita Way Yin Ng Grace Lui Lowell Ling Agnes s.Y.Leung Chit chow siaw shi Boon Wendy C.s.Ho Maggie Haitian Wang Renee Wan Yi Chan Albert Martin Li David shu Cheong Hui Paul Kay sheung Chan Department of Microbiology Faculty of MedicineThe Chinese University of Hong KongHong KongChina Department of Medicine and Therapeutics Faculty of MedicineThe Chinese University of Hong KongHong KongChina Department of Anaesthesia and Intensive Care Faculty of MedicineThe Chinese University of Hong KongHong KongChina Department of Paediatrics Faculty of MedicineThe Chinese University of Hong KongHong KongChina Department of Anatomical and Cellular Pathology Faculty of MedicineThe Chinese University of Hong KongHong KongChina Jockey Club school of Public Health and Primary Care Faculty of MedicineThe Chinese University of Hong KongHong KongChina stanley Ho Centre for Emerging Infectious Diseases Faculty of MedicineThe Chinese University of Hong KongHong KongChina

The sARs-CoV-2 Omicron variants are notorious for their transmissibility,but little is known about their subgenomic RNA(sgRNA)*** study applied RNA-seq to delineate the quantitative and qualitative profiles of canonical sgRNA of 118 respiratory samples collected from patients infected with Omicron BA.2 and compared with 338 patients infected with non-variant of concern(non-VOC)-D614G.A unique characteristic profile depicted by the relative abundance of 9 canonical sgRNAs was reproduced by both BA.2 and non-VOCD614G regardless of host gender,age and presence of ***,such profile was lost in samples with low viral load,suggesting a potential application of sgRNA pattern to indicate viral activity of individual patient at a specific time point.A characteristic qualitative profile of canonical sgRNAs was also reproduced by both BA.2 and *** presence of a full set of canonical sgRNAs carried a coherent correlation with crude viral load(AUC¼0.91,95%CI 0.88–0.94),and sgRNA ORF7b was identified to be the best surrogate marker allowing feasible routine application in characterizing the infection status of individual *** potentials in using sgRNA as a target for vaccine and antiviral development are worth pursuing.

关键词： Coronavirus sARs-CoV-2 Omicron BA.2 Non-VOC-D614G RNA-seq subgenomic RNA(sgRNA)

Drosophila adhesion GPCR Remoulade regulates axon growth, branching, and guidance by modulating Rac1 GTPase

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Journal of Genetics and Genomics 2024年第4期51卷 458-461页

作者： Xi Yang Changkun Pan Meitong Ye Jinshuo Liang Haoyang Cheng Qing Liang shu Huang Jianshu Wang Hoi Yee chow Haihuai He Cancer Center and state Key Laboratory of Biotherapy West China HospitalSichuan UniversityChengduSichuan 610041China National Clinical Research Center for Geriatrics and state Key Laboratory of Biotherapy West China HospitalSichuan UniversityChengduSichuan 610041China Department of Neurosurgery Cancer Center and State Key Laboratory of BiotherapyWest China HospitalSichuan UniversityChengduSichuan 610041China

The assembly of neurons into complex circuits relies upon appropriate axonal navigation to distant *** considerable progress has been made toward understanding the regulation of the guidance and branching of axon extension,the molecular and cellular mechanisms underlying the coordination of the motility of the axon tip,axon growth,and branching remain largely unknown(sudhof,2017).The Drosophila mushroom body(MB),the major site for associative learning and memory,is a powerful model system to investigate complex axon *** MB is a bilaterally symmetric central brain structure,mainly composed of Kenyon cells,MB output neurons,and dopaminergic neurons(Li et al.,2020).Among the seven neuronal subtypes of~2000 Kenyon cells,Y,a/β,and a/β'subtypes extend axons in a fascicle and bifurcate to produce two sister branches,one projecting into the dorsal lobe and the other into the medial lobe.

关键词： branching medial axon

synthesis,structures,and Chiroptical Properties of NBN-Doped Helicenes with Boron Atoms in the Inner Rims

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Precision Chemistry 2024年第1期2卷 28-39页

作者： Weiwen Zhuang Yujian Liu Ziqi Deng Yu Guo Philip C.Y.chow David Lee Phillips Wei Jiang Zhaohui Wang Junzhi Liu state Key Laboratory of synthetic Chemistry HKU-CAS Joint Laboratory on New Materials and Department of ChemistryThe University of Hong KongPokfulamHong KongChina Key Laboratory of Organic Optoelectronics and Molecular Engineering Department of ChemistryTsinghua UniversityBeijing 100084China Department of Mechanical Engineering The University of Hong KongPokfulamHong KongChina

The precise synthesis of helicenes with topologically defined length and specific heteroatomic perturbation in the screw-like conjugated skeletons plays an emerging role in the manipulation of chiral ***,selective,and programmable routes to helicenes or heterohelicenes are highly desirable yet challenging for structure-chiroptical property relationship ***,we report the synthesis and characterization of NBN-doped helicenes with boron atoms in the inner rims,enabled by the highly regioselective one-pot borylation of rationally designed precursors with,namely,fold-in or pan-out *** incorporation of nonbonded boron and nitrogen atoms resulted in narrow-band emission and improved optical properties for the single-stranded carbon *** addition,numbers and arrangement modes of fused six-membered rings have distinct effects on configurational stability and chiroptical properties,revealing that BN-[6]H with strong circular dichroism is a promising candidate for chiral *** combination of experimental and theoretical studies on these helical structures might provide insights into the design of helically chiral small-molecule-based sensors or emitters.

关键词： Nitrogen-boron Helicenes Borylation Chiroptical properties Narrow-band emission

变废为宝:“蓝色循环”海洋塑料废物管理新策略

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science Bulletin 2024年第8期69卷 993-996页

作者：余灏轩 Izni Zahidi chow Ming Fai 梁东方 DagØivind Madsen Department of Civil Engineering School of EngineeringMonash University MalaysiaBandar Sunway 47500Malaysia Monash Climate-Resilient Infrastructure Research Hub(M-CRInfra) School of EngineeringMonash University MalaysiaBandar Sunway 47500Malaysia Department of Engineering University of CambridgeCambridge CB21PZUK Davis school of Business Colorado Mesa UniversityGrand Junction 81501-3122USA

The"Blue Circle"vision,initiated by Zhejiang Province in China,represents a groundbreaking advancement in addressing marine plastic *** more than just an innovative concept,it embodies a future-forward approach to managing marine plastic waste,revealing the untapped potential in what was previously considered mere *** initiative,marrying scientific innovation with advanced technology,has been rightfully acknowledged with the prestigious2023 United Nations"Champions of the Earth"award,recognizing its innovative strategy in environmental stewardship(https://***/a/202310/31/***).

关键词： breaking debris initiated

ChatGPT智能处理器使用我们的语言吗?

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哲学分析 2024年第4期15卷 3-16,196页

作者：周柏乔香港公开大学中国香港

有人说ChatGPT智能处理器只会吐出话语,不(会)说话。尽管它的话有意思,而且可以被理解,但理解它的话真的在于挖掘它的“心思”或“心意”吗?假定与其对话的自然人都认为ChatGPT没有“心思”或“心意”,却发现对话有意思,起码有助于一般... 详细信息

有人说ChatGPT智能处理器只会吐出话语,不(会)说话。尽管它的话有意思,而且可以被理解,但理解它的话真的在于挖掘它的“心思”或“心意”吗?假定与其对话的自然人都认为ChatGPT没有“心思”或“心意”,却发现对话有意思,起码有助于一般人通过ChatGPT的话语进一步认识自己的“心思”或“心意”,这是否意味着ChatGPT是个语言使用者,和人类的语言使用者一样,可通过与人们的对话帮助自然人认识自己的想法?如果是这样,就会出现矛盾:它不(会)说话却成为语言使用者。借用蒯因的翻译理论、戴维森的诠释理论以及维特根斯坦的后期论述,可以说明自然人有哪些语言本领,AI工程当予以实现,ChatGPT智能处理器方可媲美自然人的语言使用能力。

关键词： ChatGPT 蒯因戴维森维特根斯坦

Effect of Eu3+,Bi3+,and Li+ doping on luminescent property of GdNbO4

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Journal of Rare Earths 2024年第1期42卷 66-75页

作者： s.W.Wi Y.s.Lee Department of Physics and Integrative Institute of Basic sciences Soongsil University

We investigated the emission properties of Eu3+-doped GdNbO4-based oxide phosphors,aiming at improving the Eu3+emission by codoping of Bi3+and Li+.Eu3+singly doped,Eu3+and Bi3+doubly doped,and Eu3+,Bi3+,and Li+triply doped GdNbO4were prepared using a high-temperature solid-state reaction *** red-orange emissions from Eu3+in the singly doped samples are significantly improved by the codoping of Bi3+,mainly due to the energy transfer from Bi3+to Eu3+.The additional codoping of Li+is found to increase the Eu3+emission *** improvement might be attributed to the increase in the photoluminescent quantum yield originating from larger grain sizes and better crystallinity.A detailed analysis of the X-ray diffraction pattern and the asymmetric ratio estimated from the photoluminescence spectra show that the local lattice environment around Eu3+in GdNbO4does not change significantly with the codoping of Bi3+and Li+.Our results indicate that Li+doping is a promising way to improve the emission properties of rare-earth ion-doped GdNbO4phosphors.

关键词： Eu 3+ GdNbO 4 Codoping of Li + Photoluminescence sensitizer Rare earths

soft,body conformable electronics for thermoregulation enabled by kirigami

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Bio-Design and Manufacturing 2024年第4期7卷 453-462页

作者： Lung chow Guangyao Zhao Pengcheng Wu Xingcan Huang Jiyu Li Jian Li Wanying Wang Guihuan Guo Zhiyuan Li Jiachen Wang Jingkun Zhou Yawen Yang Yuyu Gao Binbin Zhang Qiang Zhang Dengfeng Li Ya Huang Kuanming Yao Jian Lu Xinge Yu Department of Biomedical Engineering City University of Hong KongHong Kong 999077China Hong Kong Centre for Cerebro-Cardiovascular Health Engineering Hong Kong 999077China Department of Biomedical sciences City University of Hong KongHong Kong 999077China Department of Mechanical Engineering City University of Hong KongHong Kong 999077China

The application of thermoelectric devices(TEDs)for personalized thermoregulation is attractive for saving energy while balancing the quality of *** that directly attach to human skin remarkably minimized the energy wasted for cooling the entire ***,facing the extreme dynamic geometry change and strain of human skin,conventional TEDs cannot align with the contour of our bodies for the best thermoregulation ***,we designed a kirigami-based wearable TED with excellent water vapor permeability,flexibility,and *** analysis and experimental results reveal that our product can withstand various types of large mechanical deformation without circuit *** stated outcome and proposed facile approach not only reinforce the development of wearable TEDs but also offer an innovative opportunity for different electronics that require high conformability.

关键词： Thermoregulation Thermoelectric Kirigami Body conformable Wearable