检索结果-南通市图书馆

Novel gripper module and method for automated assembly of miniature parts

Advances in Manufacturing 2023年第2期11卷 295-310页

作者： Zhi-Yong Zhang Xiao-Dong Wang Tong-Qun Ren tian-lun jin Key Laboratory for Micro/Nano Technology and System of Liaoning Province Dalian University of TechnologyDalian116024LiaoningPeople's Republic of China Key Laboratory for Precision and Non-traditional Machining of Ministry of Education Dalian University of TechnologyDalian116024LiaoningPeople's Republic of China

During assembly process,the miniature part needs to be fixed in its assembly *** some occasions where adhesive is used,the joining force is not established due to the adhesive curing process,in that case the locking of parts is *** locking is difficult to meet the increasing demand for mass *** solve this problem and realize fully automatic assembly,a novel gripper module was designed and corresponding locking method was *** to the functional integration,the gripper module is capable of manipulating and locking the *** module is integrated into the assembly system and plays a crucial role in automatic *** locking method for automatic assembly is based on the integration of the part picking up and the locking unit *** being placed accurately at its desired position,the miniature part can be automatically locked by releasing the locking *** innovative structure and mechanism of the gripper module convert the spring force into the locking force of the miniature part,ensuring non-rigid locking and suitable small locking *** principle,flexibility and limitations of the proposed method were clarified in ***,an effective compensation strategy was used to achieve accurate and stable pickup of the part,which increased the reliability of the assembly *** automatic locking,the disturbances to the part due to the eccentric load were *** effectiveness of the gripper module and proposed method was verified by *** results indicated that the modular system integrated with the gripper module could meet the requirements of fully automatic *** locking is replaced by automatic locking,and workers are liberated from tedious manual *** improvement of automation level enables assembly equipment to be applied to mass production scenarios.

关键词： Fully automatic assembly Miniature parts Automatic locking Gripper module

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

A Cryptographic Scheme Based on Spatiotemporal Chaos of Coupled Map Lattices

引用

Communications in Theoretical Physics 2006年第3期45卷 477-482页

作者： MA Hui CHEN tian-lun Institute of Physics Nankai University Tianjin 300071 China CCAST （World Laboratory） P.O. Box 8730 Beijing 100080 China

We propose a cryptographic scheme based on spatiotemporal chaos of coupled map lattices （CIVIL） ,which is based on one-time pad. The structure of the cryptosystem determines that the progress in decryption implies the progress in exploring the dynamical behavior of spatiotemporal chaos in CML. A part of the initial condition of CML is used as a secret key, and the recovery of the secret key by exhaustive search is impossible due to the sensitivity to the initial condition in spatiotemporal chaos system. Specially the software implementation of the scheme is easy.

关键词： spatiotemporal chaos coupled map lattices cryptography

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Communication via Chaotic Synchronization Based on Contraction Maps

引用

Chinese Physics Letters 1996年第8期13卷 572-575页

作者： ZHOU Chang-song CHEN tian-lun Department of Physics Nankai UniversityTianjin 300071

A newly proposed method for constructing chaotically synchronizing systems is applied to *** independent information signals can be transmitted at the same time if the chaotic system is a multi-dimensional *** of the ... 详细信息

关键词： chaotic constructing method

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Damage Spreading in Neural Network with Local Connection and Cycle Stored Patterns

引用

Chinese Physics Letters 1996年第9期13卷 644-647页

作者： JI Dao-yun CHEN tian-lun Department of Physics Nankai UniversityTianjin 300071

The simulation results of damage spreading show the happening of dynamical chaotic-frozen phase transition in a one-dimensional system,a neural network with cycle stored patterns and local *** chaotic phase,the averag... 详细信息

关键词： behavior chaotic dynamical

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Complex Behavior in an Integrate-and-Fire Neuron Model Based on Small World Networks

引用

Communications in Theoretical Physics 2005年第2X期44卷 311-315页

作者： LIN Min CHEN tian-lun Department of Physics Nankai University Tianjin 300071 China

Based on our previously pulse-coupled integrate-and-fire neuron model in small world networks, we investigate the complex behavior of electroencephalographic (EEG)-like activities produced by such a model. We find EEG-like activities have obvious chaotic characteristics. We also analyze the complex behaviors of EEG-like signals,such as spectral analysis, reconstruction of the phase space, the correlation dimension, and so on.

关键词： self-organized criticality EEG-like waveform edge of chaos

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Nonlinear Dynamical Behavior in BS Evolution Model Based on Small-World Network Added with Mechanism of Preferential Connection

引用

Communications in Theoretical Physics 2006年第3期45卷 493-498页

作者： ZHANG Ying-Yue CHEN tian-lun Department of Physics Nankai University Tianjin 300071 China

In this paper, we introduce a modified small-world network added with new links with preferential connection instead of adding randomly, then we apply Bak-Sneppen （BS） evolution model on this network. Several dynamical character of the model such as the evolution graph, fo avalanche, the critical exponent D and T, and the distribution of mutation times of all the nodes, show particular behaviors different from those of the model based on the regular network and the small-world network.

关键词： connectionpower-law behavior small-world network evolution model preferential

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Capability Analysis of Chaotic Mutation and Its Self-Adaption

引用

Communications in Theoretical Physics 2002年第5期38卷 555-560页

作者： YANG Li-Jiang CHEN tian-lun Department of Physics Nankai University Tianjin 300071 China Department of Physics Nankai University Tianjin 300071 China

Through studying several kinds of chaotic mappings' distributions of orbital points, we analyze the capabilityof the chaotic mutations based on these mappings. Nunerical experiments support our conclusions very well. Thecapability analysis also led to a self-adaptive mechanism of chaotic mutation. The introducing of the self-adaptivechaotic mutation can improve the performance of genetic algorithm very prominently.

关键词： genetic algorithms, chaotic mutation, function optimization, self-adaption

来源：

维普期刊数据库

维普期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Liraglutide reduces oxidized LDL-induced oxidative stress and fatty degen- eration in Raw 264.7 cells involving the AMPK/SREBP1 pathway

引用

Journal of Geriatric Cardiology 2015年第4期12卷 410-416页

作者： Yan-Gui WANG tian-lun YANG Department of Cardiology Xiangya Hospital Central South University No. 8 7 Xiangya Road Changsha Hunan China Deparment of Geriatrics Hunan Provincial People's Hospital No.61 Jiefang West Road Changsha Hunan China

Baekgound Recent studies have suggested a potential role for liraglutide in the prevention and stabilization ofatherosclerotic vascular disease. However, the molecular mechanisms underlying the effect of liraglutide on atherosclerosis have not been well elucidated. The pur- pose of this study was to examine whether liraglutide protects against oxidative stress and fatty degeneration via modulation of AMP-activated protein kinase （AMPK）/sterol regulatory element binding transcription factor 1 （SREBP1） signaling pathway in foam ceils. Methods Mouse macrophages Raw264.7 cells were exposed to oxidized low density lipoprotein （oxLDL） to induce the formation of foam cells. The cells were incubated with oxLDL （50 μg/mL）, liraglutide （0.1, 0.5, 1 and 2 nmol/L） or exendin-3 （9-39）（1, 10 and 100 nmol/L） alone, or in combination. Oil Red O staining was used to detect intracellular lipid droplets. The levels of TG and cholesterol were measured using the commercial kits. Oxidative stress was determined by measuring intracellular reactive oxygen species （ROS）, malondialdehyde （MDA） and superoxide dismutase 1 （SOD）. Western blot analysis was used to examine the expression of AMPKal, SREBP1, phosphory- lated AMPKal, phosphorylated SREBP1, glucagon-like peptide-1 （GLP-1） and GLP-1 receptor （GLP-1R）. Results Oil Red O staining showed that the cytoplasmic lipid droplet accumulation was visibly decreased in foam cells by treatment with liraglutide. The TG and cholesterol content in the liraglutide-treated foam cells was significantly decreased. In addition, foam ceils manifested an impaired oxidative stress following liraglutide treatment, as evidenced by increased SOD, and decreased ROS and MDA. However, these effects of liraglutide on foam cells were attenuated by the use of GLP-IR antagonist exendin-3 （9-39）. Furthermore, we found that the expression level of AMPKa 1 and phosphorylated AMPKct 1 was significantly increased while the expression level of SREBP 1 and phosphorylated SRE

关键词： AMPK/SREBP1 pathway Fatty degeneration Foam cell Liraglutide Oxidative stress

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Application of Chaos in Genetic Algorithms

引用

Communications in Theoretical Physics 2002年第8期38卷 168-172页

作者： YANG Li-Jiang CHEN tian-lun Department of Physics Nankai University Tianjin 300071 China Department of Physics Nankai University Tianjin 300071 China

Through replacing Gaussian mutation operator in real-coded genetic algorithm with a chaotic mapping, wepresent a genetic algorithm with chaotic mutation. To examine this new algorithm, we applied our algorithm to functionoptimization problems and obtained good results. Furthermore the orbital points' distribution of chaotic mapping andthe effects of chaotic mutation with different parameters were studied in order to make the chaotic mutation mechanismbe utilized efficiently.

关键词： genetic algorithms, chaos, function optimization

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Complex Behavior in a Selective Aging Neuron Model Based on Small World Networks

引用

Communications in Theoretical Physics 2008年第2期49卷 409-413页

作者： ZHANG Gui-Qing CHEN tian-lun Department of Physics Nankai University Tianjin 300071 China

Complex behavior in a selective aging simple neuron model based on small world networks is investigated. The basic elements of the model are endowed with the main features of a neuron function. The structure of the selective aging neuron model is discussed. We also give some properties of the new network and find that the neuron model displays a power-law behavior. If the brain network is small world-like network, the mean avalanche size is almost the same unless the aging parameter is big enough.

关键词： selective aging self-organized criticality small world networks finite-size-scaling analysis power-law

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：