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CDIO与“学生为中心”结合的“机电产品电气设计”课程教学研究与实践

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湖南包装 2024年第2期39卷 195-198页

作者：沈建位宁波职业技术学院浙江宁波315800

针对“机电产品电气设计”课程在教学中表现出的主要问题,通过CDIO工程项目教育模式与“学生为中心”的教学理念相融合。对课程的能力目标、教学内容、教学进程及教学评价开展改革创新,制订了课程能力和专业知识大纲;制订了基于CDIO的... 详细信息

针对“机电产品电气设计”课程在教学中表现出的主要问题,通过CDIO工程项目教育模式与“学生为中心”的教学理念相融合。对课程的能力目标、教学内容、教学进程及教学评价开展改革创新,制订了课程能力和专业知识大纲;制订了基于CDIO的评价方案;创建小型模块化设计产品实训平台。教学结果说明,该教学改革创新可以有效提升学生的个人职业能力、合作能力和工程项目设计能力。

关键词： CDIO 学生为中心电气设计教学改革

基于乡村振兴战略背景下保护开发特色村庄规划探究--以闽侯县仁洲村为例

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江西建材 2024年第6期 154-156页

作者：沈健伟福州市城乡规划设计院有限公司福建福州350000

在乡村振兴战略背景下,村庄规划是乡村振兴战略实施的必然选择。文中以闽侯县仁洲村为例,从概况分析、发现问题以及发展策略等方面对乡村振兴战略背景下保护开发特色村庄规划进行探究,重点分析村庄自然资源、特色文化、特色产业的保护... 详细信息

在乡村振兴战略背景下,村庄规划是乡村振兴战略实施的必然选择。文中以闽侯县仁洲村为例,从概况分析、发现问题以及发展策略等方面对乡村振兴战略背景下保护开发特色村庄规划进行探究,重点分析村庄自然资源、特色文化、特色产业的保护和开发利用,优化村庄用地布局,促进村庄高效有序发展。

关键词：乡村振兴村庄规划保护开发特色村庄

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情报学视角下的预训练语言模型研究进展

图书情报工作 2024年第3期68卷 130-150页

作者：胡昊天邓三鸿王东波沈思沈健威南京大学信息管理学院南京210023 江苏省数据工程与知识服务重点实验室南京210023 南京农业大学信息管理学院南京210095 南京理工大学经济管理学院南京210094 江苏省质量和标准化研究院南京210029

[目的/意义]对预训练语言模型在情报学与情报工作中的相关研究进行系统性的梳理与分析,为后续预训练模型与情报研究的融合提供借鉴。[方法/过程]首先,简述预训练模型的基本原理与发展历程,汇总情报研究中应用较为广泛的预训练模型。其次... 详细信息

[目的/意义]对预训练语言模型在情报学与情报工作中的相关研究进行系统性的梳理与分析,为后续预训练模型与情报研究的融合提供借鉴。[方法/过程]首先,简述预训练模型的基本原理与发展历程,汇总情报研究中应用较为广泛的预训练模型。其次,宏观上分析预训练模型在国内外情报研究中的热点方向,微观上从情报组织、情报检索、情报挖掘等方面调研预训练模型相关研究成果,并细致分析归纳预训练模型的应用方式、改进策略与性能表现。最后,从预训练模型的语料、训练、评价、应用等方面总结当前预训练模型在情报学科中面临的机遇与挑战,展望未来发展。[结果/结论 ]当前BERT及其改型在情报处理中应用最广、表现最优。结合神经网络与微调的范式被用于各研究场景,尤其是领域信息抽取与文本分类任务。继续预训练、外部知识增强、架构优化等策略可进一步提升性能。如何平衡训练语料的规模与质量、提升模型易用性与安全性、高准度与多维度评价模型真实能力、加速学科知识挖掘工具落地应是未来考虑的关键问题。

关键词：情报学情报工作预训练语言模型自然语言处理 PLM

Field body temperature and thermal preference of the big-headed turtle Platysternon megacephalum

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Current Zoology 2013年第5期59卷 626-632页

作者： jianwei shen Fanwei MENG Yongpu ZHANG Weiguo DU Key Laboratory of Animal Ecology and Conservation Biology Institute of Zoology Chinese Academy of Sciences Beijing 100101 China Department of Environmental Sciences School of Life Sciences Hangzhou Normal University Hangzhou 310036 China College of Life and Environmental Sciences Wenzhou University Wenzhou 325027 Zhejiang China

The big-headed turtle Platysternon megacephalum is a stream-dwelling species whose ecology is poorly known. We carried out field and laboratory investigations to determine field body temperatures and thermal preference of this species. In the field, the body temperatures of the turtles conformed to the water temperature, with little diel variation in either summer or au- tumn. Over the diel cycle, the mean body temperatures ranged from 20.8℃ to 22.2℃ in summer and from 19.3℃ to 21.2℃ in autumn; the highest body temperatures ranged from 22.1℃ to 25.0℃ in summer and from 20.6℃ to 23.8℃ in autumn. In the laboratory, the preferred body temperature （Tp） was 25.3℃ Food intake was maximized at 24.0℃, whereas locomotor perfor- mance peaked at 30.0℃. Consequently, Tp was closer to the thermal optimum for food intake than for locomotion. Therefore, this freshwater turtle has relative low field body temperatures corresponding to its thermal environment. In addition, the turtle prefers low temperatures and has a low optimal temperature for food intake [Current Zoology 59 （5）： 626-632, 20＇13].

关键词： Food intake Locomotion Preferred body temperature Thermoregulation Thermal sensitivity

Pattern dynamics of network-organized system with cross-diffusion

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Chinese Physics B 2017年第2期26卷 80-85页

作者： Qianqian Zheng Zhijie Wang jianwei shen College of Information Science and Technology Donghua University Shanghai 201620 China Institute of Applied Mathematics Xuchang University Xuchang 461000 China

Cross-diffusion is a ubiquitous phenomenon in complex networks, but it is often neglected in the study of reaction–diffusion networks. In fact, network connections are often random. In this paper, we investigate pattern dynamics of random networks with cross-diffusion by using the method of network analysis and obtain a condition under which the network loses stability and Turing bifurcation occurs. In addition, we also derive the amplitude equation for the network and prove the stability of the amplitude equation which is also an effective tool to investigate pattern dynamics of the random network with cross diffusion. In the meantime, the pattern formation consistently matches the stability of the system and the amplitude equation is verified by simulations. A novel approach to the investigation of specific real systems was presented in this paper. Finally, the example and simulation used in this paper validate our theoretical results.

关键词： cross diffusion random network Turing instability amplitude equation

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基于专利分析的物联网技术态势

江苏科技信息 2024年第13期41卷 5-9页

作者：沈健威江佳雨谢瑶瑶黄洁江苏省质量和标准化研究院江苏南京210001 南京大学信息管理学院江苏南京210023

物联网技术自提出以来,受到学界和业界的高度关注,该领域的专利申请数量迅速增加。文章旨在对物联网技术领域的专利数据进行分析,探索物联网技术的发展现状和未来趋势。通过对收集到的专利数据从数量、国家分布、技术领域、专利权人以... 详细信息

物联网技术自提出以来,受到学界和业界的高度关注,该领域的专利申请数量迅速增加。文章旨在对物联网技术领域的专利数据进行分析,探索物联网技术的发展现状和未来趋势。通过对收集到的专利数据从数量、国家分布、技术领域、专利权人以及专利关键词等维度开展深入分析,为国内相关企业在该领域的专利研发方向提供参考。研究发现,物联网技术的专利数量增长迅速,专利数量、种类和质量在不同的国家和地区存在明显的差异,专利权人分布较为离散,呈现出百家争鸣的态势。

关键词：物联网专利分析发展态势研究热点

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Enhanced Flexoelectricity in Barium Titanate-Cellulose Composite Thin Films

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Acta Mechanica Solida Sinica 2024年第4期37卷 521-527页

作者： Wensi Xing Hongyu Cao Xin Zhang Xu Liang jianwei Song shengping shen Chemomechanics and Intelligent Media Laboratory State Key Laboratory for Strength and Vibration of Mechanical StructuresSchool of Aerospace EngineeringXi’an Jiaotong UniversityXi’an710049China

Biopolymers,the potential flexoelectric materials,are environment-friendly,degradable,lightweight,cost-effective,and possess remarkable processing properties catering to the requirements of advanced ***,the flexoelectric coefficient of biopolymers is normally much weaker than that of ceramic materials,limiting their potential applications for designing high-performance green electromechanical coupling *** improve the flexoelectric response in biopolymers,we composited barium titanate(BTO)with 2,2,6,6-tetramethylpiperidine-1-oxyl-oxidized cellulose nanofibrils(TOCNF)to enhance the flexoelectric response of *** to the high permittivity and flexoelectric effect of BTO,the relative dielectric constant and flexoelectric coefficient of 33.3 wt%BTO-TOCNF films reached 30.94@1 kHz and 50.05±1.88 nC/m@1 Hz,which were almost 172 times and 27 times higher than those of TOCNF,*** composite thin film contains high dielectric constant and flexoelectric coefficient,as well as excellent *** study provided a straightforward and efficient method for improving the flexoelectric effect of biopolymers,and demonstrated its great potential applications in flexoelectric-based devices.

关键词： Flexoelectricity Cellulose BaTiO_(3) Composite Thin films

Black band disease as a possible factor of the coral decline at the northern reef-flat of Yongxing Island,South China Sea

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Science China Earth Sciences 2014年第4期57卷 569-578页

作者： YANG HongQiang shen jianwei FU FeiXue WANG Yue ZHAO Na CAS Key Laboratory of Marginal Sea Geology South China Sea Institute of OceanologyChinese Academy of Sciences University of Chinese Academy of Sciences Department of Biological Sciences University of Southern California3616 Trousdale Parkway

Black band disease （BBD）, characterized by the Cyanobacterial dominated pathogenic consortium, is thought to play a key role in the global decline of the coral reef ecosystems. The present paper originally documents a case of BBD from Yongxing Island （Xisha Islands, South China Sea）, and further probes the reasons of this abnormal phenomenon. Prior to 2007, corals at northern reef-flat of Yongxing Isand were in healthy growth. Catastrophic coral mortality occurred between 2007 and 2008. The 16S rRNA gene sequencing and PCR amplification, with universally conserved primers, were applied to detect the conta- gious bacterial community of the microbial mat. The results demonstrated that six bacterial divisions constituted the clone libraries derived from the BBD mat, and that Cyanobacteria are the most diversely represented group that inhabit BBD bacteri- al mats, despite the fact that species in five others divisions （a-Proteobacteria, y-Proteobacteria, Bacteroidetes, Verrucomi- crobia and Actinobacteria） are also consistently diverse within the BBD mats of diseased coral. Other factors such as coral bleaching, typhoons, ocean acidification and crown-of-thorns starfish outbreaks, are not primarily responsible for the coral mortality within such a short time interval. The disaster expansion of BBD associated with Cyanobacterial blooms is a more likely mechanism impacting these coral reefs. Excessive human activity enhances the eutrophication of the marine water of the reefal region and may result in occurrence of the BBD.

关键词： Black Band Disease (BBD) Cyanobacteria coral deterioration Yongxing Island Xisha Islands

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Coral community dynamics and shallow-water carbonate deposition of the reef-flat around Yongxing Island, the Xisha Islands

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Science China Earth Sciences 2013年第3期56卷 1471-1486页

作者： shen jianwei YANG HongQiang WANG Yue FU FeiXue ZHAO Na CAS Key Laboratory of Marginal Sea Geology South China Sea Institute of OceanologyChinese Academy of Sciences University of Chinese Academy of Sciences Department of Biological Sciences University of Southern California

Microbes and microbial carbonates in reef-flat and coral community dynamics and submarine geomorphologic features in reef crest and fore reef of Yongxing Island,the Xisha Islands,South China Sea,were studied by means of scuba diving,underwater investigation,and line intercept transect *** indicate a very high coral mortality with few living corals in the reef flat of Yongxing ***,macro algae,sea grass and cyanobacteria are common in reef *** and microbially induced carbonates occur in reef *** corals grow mainly in the reef crest and fore reef,but are also declined *** coast to off shore,the southeast reef flat of Yongxing Island can be divided into beach,inner reef flat,outer reef flat,reef flat front(reef crest and fore reef),and fore-reef slope *** facies include coast,reef flat,reef crest and fore reef,and fore-reef *** carbonate sediments are composed of coral skeletons and framework,coral fragments,bioclasts,and lime *** the deterioration of environment and water quality,the coral communities tend to be distributed in the reef crest and fore reef with clean sea water,well circulation and moderate water *** flat is occupied mainly by the macro algae and Heliopora coerulea *** coverage statistics on the reef crest demonstrate that the coverage of Acropora cytherea is more than 28% and represents a dominant species with wave-resistant ecological *** characteristics and geomorphologic features are different between the southeast and northwest reef-flat fronts(reef crest and fore reef) of Yongxing *** former shows discontinuously tidal channels in outer reef flat and different dimensional and deep reef ponds in reef crest and fore reef,and the latter presents a typical spur-and-groove ***(cyanobacteria Lyngbya sp.) occur generally in the inner reef flat and reef ponds of reef crest with restricted water *** algae g

关键词： Coral community dynamics and shallow-water carbonate deposition of the reef-flat around Yongxing Island the Xisha Islands

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