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高校应用数学学报（A辑） 2000年第4期15A卷 389-391页

作者：奚李峰浙江万里学院数学所浙江宁波315101

在作者本人提出的交错跳跃函数及其 Cantor型导数的基础上 ,得到不存在 Cantor型导数的点的全体 (即例外集 )的

关键词：分形几何 HAUSDORFF维数例外集 CANTOR导数

Expression of Beclin1 in non small cell lung cancer and its clinical significance

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Journal of Nanjing Medical University 2008年第2期22卷 121-124页

作者： Quan Liu Jianjun Wang Yongcheng Pan lifeng Meng xi Zhan Department of Thoracic Surgery Union Hospital Huazhong University of Science and Technology Wuhan 430022China

Objective：To investigate the expression of autophagy related gene; Beclin 1 in human non-small cell lung cancer（NSCLC） tissues. Methods：Protein expression of Beclinl was determined by immunofluorescence staining and Western Blot, mRNA expression was analyzed by RT-PCR. Results：Immunofluorescence staining revealed that the level of Beclin 1 expression in lung cancer was significantly lower than that in adjacent noncancerous tissues and normal tissues（expression rate 8.3%, P=0.000）. The Beclin 1 mRNA expression in lung cancer, adjacent noncancerous tissues and normal tissues was 1.372 （ ±0.475） 1.721 （ ±0.521） and 1.553（ ±0.554） when F = 15.0, P 〈 0.01. Beclin1 protein expression in lung cancer, adjacent noncancerous tissues and normal tissues was 3.453（±0.852） 5.423（± 1.351） and 6.878（±0.997） F= 11.2, P〈 0.01. Conclusion：The protein and mRNA expression of Beclinl in lung cancer was much lower than those in and around cancer tissues and normal tissues, those differences having statistical significance. However in adjacent noncancerous tissues and normal tissues, the expression showed no difference.

关键词： autophagy Beclin1 lung cancer

STATE SPACE MODELING OF DIMENSIONAL MACHINING ERRORS OF SERIAL-PARALLEL HYBRID MULTI-STAGE MACHINING SYSTEM

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STATE SPACE MODELING OF DIMENSIONAL MACHINING ERRORS OF SERI...

2005年中国机械工程学会年会

作者： DU Shichang, xi lifeng (School of Mechanical Engineering, Shanghai Jiaotong University, Shanghai)

＜正＞The final product quality is determined by cumulation, coupling and propagation of product quality variations from all stations in multi-stage manufacturing systems （MMSs）. Modeling and control of variation propagation is essential to improve product quality. However, the current stream of variations （SoV） theory can only solve the problem that a single SoV affects the product quality. Due to the existence of multiple variation streams, limited research has been done on the quality control in serial-parallel hybrid multi-stage manufacturing systems （SPH-MMSs）. A state space model and its modeling strategies are developed to describe the multiple variation streams stack-up in a SPH-MMS. The SoV theory is extended to SPH-MMS. The dimensions of system model are reduced to the production-reality level, and the effect and feasibility of the model is validated by a machining case.

关键词： multi-stage manufacturing system system model product quality

来源： cnki会议评论

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面向质量控制的制造系统可诊断性分析

机械工程学报 2006年第5期42卷 149-154页

作者：杜世昌奚立峰潘尔顺上海交通大学机械与动力工程学院上海200030

针对目前以产品质量控制为目标的制造系统可诊断性和局部可诊断系统的诊断能力研究较少的现状,在构建制造系统状态空间模型的基础上,提出了一套新的制造系统可诊断性分析方法,推导出系统具有可诊断性的充分必要条件,对于局部可诊断系统... 详细信息

针对目前以产品质量控制为目标的制造系统可诊断性和局部可诊断系统的诊断能力研究较少的现状,在构建制造系统状态空间模型的基础上,提出了一套新的制造系统可诊断性分析方法,推导出系统具有可诊断性的充分必要条件,对于局部可诊断系统,建立了可诊断能力评价指数。通过具体的装配实例,针对不同的系统配置, 验证了该分析方法和评价指数的有效性和可行性。该方法为制造系统的可诊断性度量、系统优化配置和在线故障诊断等提供了理论分析依据。

关键词：质量控制多阶段制造系统可诊断性故障诊断

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多工序加工系统产品尺寸误差传递建模

机械工程学报 2011年第16期47卷 143-149页

作者：杜世昌王猛奚立峰上海交通大学机械系统与振动国家重点实验室上海200240 上海交通大学机械与动力工程学院上海200240

多工序加工系统中最终产品的尺寸误差是所有加工工序上尺寸误差累积、耦合与传递的结果。目前方法是建立数学模型对多工序加工系统尺寸误差传递进行分析,而缺乏逻辑层次上的建模理论和方法。为解决多工序加工系统中尺寸误差传递的逻辑... 详细信息

多工序加工系统中最终产品的尺寸误差是所有加工工序上尺寸误差累积、耦合与传递的结果。目前方法是建立数学模型对多工序加工系统尺寸误差传递进行分析,而缺乏逻辑层次上的建模理论和方法。为解决多工序加工系统中尺寸误差传递的逻辑分析问题,采用面向对象Petri网方法,在定义误差状态通用物理对象基础上,建立通用物理对象和加工系统的映射规则,对误差状态子类物理对象进行继承和封装,设计出误差状态消息传递关系网。建立的产品尺寸误差面向对象Petri网(Errors of product dimension-object oriented Petri net,EPD-OPN)模型可以作为多工序加工系统中尺寸误差传递动态分析和故障诊断依据。通过发动机缸盖的多工序加工过程为例证明该模型的有效性和可行性。该模型具有模块化、可重复使用性的特点和结构化的复杂逻辑关系描述能力,是目前数学模型很好的扩展。

关键词：多工序加工系统 Petri 网尺寸误差

满足开集条件的自相似集的Lipschitz等价

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数学年刊（A辑） 2012年第1期33卷 1-16页

作者：熊瑛奚李峰华南理工大学数学系广州510641 浙江万里学院数学研究所浙江宁波315100

固定r∈(0,1)及整数N≥2,设E和E'为由N个形如S(x)=±rx+b的压缩映射所生成的自相似集.设开集条件对于E及E'成立,并且所对应的开集为开区间,证明了E和E'Lipschitz等价.

关键词： Lipschitz等价自相似集开集条件

Agile Supply Chain Reengineering Based on Multi-Objective Global Performance Measurement

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Journal of Systems Engineering and Electronics 2003年第1期14卷 30-35,80页

作者： Wang juxiang, xi lifeng, Wang Anlin & Hu ZongwuDepartment of Industrial Engineering, School of Mechanical Engineering,Shanghai Jiaotong University, Shanghai 200030, P. R. China) Department of Industrial Engineering School of Mechanical Engineering Shanghai Jiaotong University Shanghai 200030 P. R. China

The process and related technology of agile supply chain reengineering is discussed in this paper. The process of supply chain reengineering is divided into two parts here: structure reengineering and operation strategy reengineering. Multi-agent concept is adopted in the structure reengineering for the convenience of the modeling. Enterprises in the agile supply chain are expressed as corresponding agents with specified characteristics. Cost and response time are adopted as the main objectives of the global supply chain performance measurement. A virtual simplified supply chain is used to illustrate the role of overall supply chain performance measurement in the reengineering process.

关键词： Agile supply chain reengineering Structure reengineering Strategy reengineering Multi-agent technology

基于自相关观测和隐马尔科夫模型的统计过程监控

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计算机集成制造系统 2018年第10期24卷 2388-2394页

作者：张媛陈震潘尔顺奚立峰上海交通大学机械与动力工程学院上海200240

自相关现象在实际统计过程中广泛存在,传统控制图无法进行有效的监控。针对该问题,提出一种考虑自相关观测的隐马尔科夫模型。通过建立观测序列概率分布在时域上的一阶自相关关系,优化建模,并将其应用于过程监控,建立基于此模型的残差... 详细信息

自相关现象在实际统计过程中广泛存在,传统控制图无法进行有效的监控。针对该问题,提出一种考虑自相关观测的隐马尔科夫模型。通过建立观测序列概率分布在时域上的一阶自相关关系,优化建模,并将其应用于过程监控,建立基于此模型的残差控制图。实例与仿真分析显示,与基于自回归移动平均模型相比,该方法具有预测准确、灵敏度高、可操作性强的特点,且对自相关过程的监控效果良好。

关键词：统计过程控制自相关观测隐马尔科夫模型控制图

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托辊浸淋水多功能试验装置

煤矿机械 2020年第5期41卷 37-39页

作者：奚丽峰中煤科工集团上海有限公司上海201401 上海煤科检测技术有限公司上海201401

目前托辊浸水、淋水试验的试验装置都是独立,无法在同一装置上实现,研发一种托辊浸淋水多功能试验装置,可以解决现有试验装置存在的一些问题。满足了托辊制造业的发展以及检测技术装备和方法不断改进和创新的需求。

关键词：浸淋水托辊试验装置

MarkINeRV: A Robust Watermarking Scheme for Neural Representation for Videos Based on Invertible Neural Networks

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Computers, Materials & Continua 2024年第9期80卷 4031-4046页

作者： Wenquan Sun Jia Liu lifeng Chen Weina Dong Fuqiang Di Department of Cryptographic Engineering Engineering University of PAPXi’an710086China Department of Cryptographic Engineering Key Laboratory for Cryptology and Information SecurityXi’an710086China

Recent research advances in implicit neural representation have shown that a wide range of video data distributions are achieved by sharing model weights for Neural Representation for Videos(NeRV).While explicit methods exist for accurately embedding ownership or copyright information in video data,the nascent NeRV framework has yet to address this issue *** response,this paper introduces MarkINeRV,a scheme designed to embed watermarking information into video frames using an invertible neural network watermarking approach to protect the copyright of NeRV,which models the embedding and extraction of watermarks as a pair of inverse processes of a reversible network and employs the same network to achieve embedding and extraction of *** is just that the information flow is in the opposite ***,a video frame quality enhancement module is incorporated to mitigate watermarking information losses in the rendering process and the possibility ofmalicious attacks during transmission,ensuring the accurate extraction of watermarking information through the invertible network’s inverse *** paper evaluates the accuracy,robustness,and invisibility of MarkINeRV through multiple video *** results demonstrate its efficacy in extracting watermarking information for copyright protection of *** represents a pioneering investigation into copyright issues surrounding NeRV.

关键词： Invertible neural network neural representations for videos watermarking robustness