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Efficient cutting path planning for a non-spherical tool based on an iso-scallop height distance field

Chinese Journal of Aeronautics 2024年第7期37卷 496-510页

作者： Jiancheng HAO Dong HE Zhaoyu LI Pengcheng HU yuanzhi chen Kai TANG Department of Mechanical and Aerospace Engineering Hong Kong University of Science and TechnologyHong Kong 999077China The Hong Kong University of Science and Technology(Guangzhou) Smart Manufacturing ThrustNanshaGuangzhou 511400China HKUST Shenzhen-Hong Kong Collaborative Innovation Research Institute Shenzhen 518057China HKUST Shenzhen Research Institute Shenzhen 518057China

Iso-scallop height machining means,when machining a freeform surface,the scallop height between any two neighboring tool paths on the surface will be a constant(i.e.,the given threshold),which is preferable among various freeform surface machining strategies due to its high machining efficiency as well as better machine tool’s ***,all the existing iso-scallop height path planning methods pertain to only the ball-end or flat-end types of *** recent years,the non-spherical cutting tool has become more and more popular,especially for five-axis machining of complex freeform surfaces,majorly owing to its non-constant curvature which can be utilized to adaptively fit the tool to the surface to both avoid the local gouging and enlarge the cutting ***,there have been no reported works on iso-scallop height five-axis tool path generation for a non-spherical tool,and,in this paper,we present ***,we first define and construct two fields on the surface to be machined-the collision-free tool orientation field(vector)and the iso-scallop height distance field(scalar).The iso-lines of the scalar field and their associated tool orientation field vectors then naturally serve as potential iso-scallop height five-axis tool paths,and we present a propagation-based algorithm to construct the desired tool path from the *** computer simulation and physical cutting experiments confirm that everywhere on the surface,except maybe near the saddle curves of the scalar filed,the scallop height is exactly the given *** adding the saddle curves as extra tool paths,the final machined surface then is assured of the required scallop height requirement.

关键词： Freeform surface machining Iso-scallop tool path Customized tool Five-axis tool path Computer aided manufacturing

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Electron transport properties of magnetic granular films

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Science China(Physics,Mechanics & Astronomy) 2013年第1期56卷 15-28页

作者： PENG DongLiang WANG JunBao WANG LaiSen LIU XiaoLong WANG ZhenWei chen yuanzhi Department of Materials Science and Engineering College of MaterialsXiamen University

In this paper,we present a review of electron transport properties of magnetic granular *** granular films are nanocomposite materials which consist of magnetic nanoparticles embedded in a nonmagnetic matrix or assembling of magnetic *** to the style of the nonmagnetic matrix,microstructure and the electron transport mechanism of the films,the magnetic granular films were divided into three groups:(1) magnetic metal-metal granular films,(2) magnetic metal-insulator granular films and(3) magnetic nanocluster-assembled granular ***,we also systematically review the magnetic properties,transport properties and magnetoresistance effect of size-monodispersed Co and Fe nanocluster-assembled films.

关键词： GMR TMR magnetotransport magnetic properties magnetic granular films

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Synthesis of Magnetic Metal-Semiconductor Hybrid Nanocrystals with Controlled Morphologies for Photocatalytic Applications

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功能材料信息 2016年第6期13卷 59-60页

作者： yuanzhi chen Xiamen University

Metal-semiconductor hybrid nanocrystals have received intensive research interests because of their multiple functionalities which can be applied in wide fields such as photocatalysis,solar energy utilization,electron... 详细信息

关键词：英语阅读理解磁性材料

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Development of functional antibodies against influenza B virus by activation-induced cytidine deaminase in hybridoma cells

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Virologica Sinica 2022年第4期37卷 619-622页

作者： yuanzhi chen chenguang Shen Jing chen Junyu chen Fentian chen Limin Zhang Xue Liu Siyuan chen Sen Xue Yongliang Liu Jixian Tang Quan Yuan Yixin chen Wenxin Luo Ningshao Xia National Institute of Diagnostics and Vaccine Development in Infectious Diseases State Key Laboratory of Molecular Vaccinology and Molecular DiagnosticsSchool of Public Health&School of Life ScienceXiamen UniversityXiamen 361102China Biosafety Level-3 Laboratory School of Public HealthSouthern Medical UniversityGuangzhou 510515China

Dear Editor,Influenza B viruses(IBVs)have circulated among humans for more than 80 *** influenza virus epidemics caused by two IBV lines(Victoria and Yamagata)and influenza A virus have considerable effects on public health globally and result in approximately290,000–650,000 annual influenza-attributed deaths(Caini et al.,2015;Pan et al.,2015).Currently,the most effective countermeasures against influenza B virus infections are influenza virus vaccines(Subbarao and Matsuoka,2013).However,these vaccines have limited efficacy because only strain-matched humoral immune responses are induced.

关键词： influenza activation globally

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A novel therapeutic anti-HBV antibody with increased binding to human FcRn improves in vivo PK in mice and monkeys

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Protein & Cell 2018年第1期9卷 130-134页

作者： Ciming Kang Lin Xia yuanzhi chen Tianying Zhang Yiwen Wang Bing Zhou Min You Quan Yuan Chi-Meng Tzeng Zhiqiang An Wenxin Luo Ningshao Xia Texas Therapeutics Institute The Brown Foundation Institute of Molecular Medicine University of Texas Health Science Center at Houston Houston USA

Antibody immunotherapy is a well-established therapeutic modality for cancer, acute viral infections （Marasco and Sui, 2007） and persistent viral infection such as HIV （Barouch et al., 2013） and HCMV （Freed et al., 2013）. To reduce immunogenicity of rodent antibodies （Abs）, approved anti-body drugs entering clinical trials are of human origin or are humanized versions of rodent antibodies （Reichert, 2008）.

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“钓鱼执法”的利益博弈与机制分析

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南京社会科学 2013年第4期 37-42页

作者：陈元志中国浦东干部学院

在城市基础设施和公共交通发展仍然面临瓶颈的特定时期,容纳黑车有可能会成为政府的无奈之举。执法部门为了提高打击黑车的积极性,允许将罚款收入按照一定比例用于奖励执法人员。这样的机制设计,有可能使得执法部门的诉求由公共福利水... 详细信息

在城市基础设施和公共交通发展仍然面临瓶颈的特定时期,容纳黑车有可能会成为政府的无奈之举。执法部门为了提高打击黑车的积极性,允许将罚款收入按照一定比例用于奖励执法人员。这样的机制设计,有可能使得执法部门的诉求由公共福利水平最大化偏离到部门利益最大化。

关键词：黑车治理利益博弈修正

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实物期权视角下战略决策的竞争情报分析

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情报学报 2016年第8期35卷 848-855页

作者：陈元志中国浦东干部学院上海201204

实物期权视角下的决策过程是评估和处理竞争情报的循环过程,包括期权式思考、期权的构建、期权的评价、期权的实施。决策者根据竞争情报判断不确定的动向,从"管理不确定"中创造价值,在控制不确定性或有损失的同时,获取不确定的或有收益... 详细信息

实物期权视角下的决策过程是评估和处理竞争情报的循环过程,包括期权式思考、期权的构建、期权的评价、期权的实施。决策者根据竞争情报判断不确定的动向,从"管理不确定"中创造价值,在控制不确定性或有损失的同时,获取不确定的或有收益。本文基于实物期权思维构建战略决策的竞争情报分析模型,为提高竞争情报的分析和决策能力提供指导性框架。

关键词：实物期权竞争情报不确定

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A Study of the Major Pathogens Causing Fruit Rots of Apple in Shelf Life in Hangzhou, Zhejiang Province, China

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American Journal of Plant Sciences 2019年第11期10卷 2070-2085页

作者： Yangying Sun Minli Lin yuanzhi chen Xuan chen Ye Cai Huabin Luo Ting Zhou Hangzhou Key Laboratory for Safety of Agricultural Products College of Life and Environmental Science Hangzhou Normal University Hangzhou China Research Centre for Plant RNA Signaling College of Life and Environmental Science Hangzhou Normal University Hangzhou China

Major pathogens causing fruit rots of apple in shelf life in Hangzhou, a city in east China, were identified by rDNA-ITS analysis. Their pathogenicities and stress tolerances were compared as well. Combining with disease symptoms, colonial phenotypes and mycelial microscopic morphology, the fungi were determined as Penicillium expansum, Botrytis cinerea, Botryosphaeria dothidea, Diaporthe phaseolorum, Alternaria alternata and Fusarium acuminatum, respectively. Among them, B. cinerea and B. dothidea showed a higher pathogenicity;B. cinerea and D. phaseolorum were hardly affected by the temperature at a range of 15°C and 25°C;B. cinerea has the highest resistant to Thiabendazole and D. phaseolorum displayed the strongest resistance to Imazalil;and P. expansum was most sensitive to ultraviolet light radiation. The results provide some useful information that helps to combine conventional and alternative control strategies to minimize apple postharvest losses in shelf life.

关键词： Apple rDNA-ITS Fungal Pathogenicity Ultraviolet-Light Radiation Fungicides

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日本移动通讯产业商业模式的内在机制与孤岛效应

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科技管理研究 2014年第18期34卷 132-135,151页

作者：陈元志中国浦东干部学院上海201204

日本的产业结构以及竞争逻辑是建立在"有控制竞争"的监管框架之下。日本移动通讯产业组织体系是少数大企业主导的金字塔型结构,采用"篱笆公园—直销网购"的商业模式,资源配置和决策体系在整个产业层面具有垂直一体化的官僚体系特征。专... 详细信息

日本的产业结构以及竞争逻辑是建立在"有控制竞争"的监管框架之下。日本移动通讯产业组织体系是少数大企业主导的金字塔型结构,采用"篱笆公园—直销网购"的商业模式,资源配置和决策体系在整个产业层面具有垂直一体化的官僚体系特征。专用的技术标准将日本市场与世界市场隔离开来,日本的移动通讯产业成为类似于"加拉帕戈斯群岛"的特殊市场,少数大企业的思路和眼界决定了整个产业发展和演进的路径。孤岛式的移动通讯市场在发挥独特优势的同时增加了将其成功模式移植到其他国家的难度,也面临战略性失败的风险。

关键词：技术经济及管理商业模式孤岛效应加拉帕格斯群岛

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First Report of a Postharvest Fruit Rot on Apple Caused by <i>Diaporthe phaseolorum</i>var. <i>caulivora</i>in China: A Note

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American Journal of Plant Sciences 2020年第10期11卷 1612-1617页

作者： yuanzhi chen Quan Zhou Yangying Sun Ran Li Yaoyao Liu Ting Zhou College of Life and Environmental Science Hangzhou Normal University Hangzhou China

Brown rots of Red Fuji apples were observed in Hangzhou city (Zhengjiang Province, China). The causal agent was isolated and identified in both morphological and molecular genetic levels. The phenotype and phylogenetic analysis revealed that the isolate was Diaporthe phaseolorum var. caulivora, and its pathogenicity on apple fruit was confirmed by re-inoculation experiment. To our knowledge, this is the first report of D. phaseolorum var. caulivora causing postharvest fruit rot on apple in China.

关键词： Apple Postharvest Pathogen ITS-rDNA Diaporthe phaseolorum var. caulivora

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