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Identification of abnormal operating conditions and intelligent decision system
Xiuliang LI, Junjie JIANG, Hongye SU, Jian CHU
《机械工程前沿(英文)》 2011年 第6卷 第4期 页码 456-462 doi: 10.1007/s11465-011-0224-0
In earth pressure balance (EPB) shield construction, the “plastic flow state” is difficult to form using the soil dug in the capsule because it can cause three abnormal operating conditions, including occlusion, caking in the capsule, and spewing at the outlet of the dump device. These abnormal operating conditions can, in turn, trigger failure in tunneling, cutter-device damage, and even catastrophic incidents, such as ground settlement. This present paper effectively integrates the mechanism of abnormal operating conditions and knowledge of soil conditioning, and establishes a uniform model of identifying abnormal conditions and intelligent decision support system based on the belief rule-base system. The model maximizes knowledge in improving the soil, construction experience, and data to optimize the model online. Finally, a numerical simulation with specific construction data is presented to illustrate the effectiveness of the algorithm.
关键词: earth pressure balance (EPB) shield machine soil pressure cabin abnormal operating condition belief rule-base system
郭海湘,刘涛,诸克军
《中国工程科学》 2004年 第6卷 第10期 页码 52-58
介绍了一种新的规则自提取和简化的模糊模型算法,该算法由3个步骤组成:首先,通过构造一个模糊软划分判别准则对输入输出空间进行模糊划分,得到最佳分类数,从而得到了最佳的规则数;其次,根据最佳规则数和神经网络来构造初始的模糊模型;第三,通过运用模糊相似分析法,可以得到计算2个模糊集相似度的方程,从而根据事先确定的阈值来合并相似的模糊集。这样就得到了一个既满足对精度的要求又简单且具有可解释性的模糊系统。最后,用该算法对我国全要素生产力进行了模糊规则的提取。
Juan LIU, Fei QIAO, Yumin MA, Weichang KONG
《工程管理前沿(英文)》 2018年 第5卷 第4期 页码 507-514 doi: 10.15302/J-FEM-2018045
The NP-hard scheduling problems of semiconductor manufacturing systems (SMSs) are further complicated by stochastic uncertainties. Reactive scheduling is a common dynamic scheduling approach where the scheduling scheme is refreshed in response to real-time uncertainties. The scheduling scheme is overly sensitive to the emergence of uncertainties because the optimization of performance (such as minimum make-span) and the system robustness cannot be achieved simultaneously by conventional reactive scheduling methods. To improve the robustness of the scheduling scheme, we propose a novel slack-based robust scheduling rule (SR) based on the analysis of robustness measurement for SMS with uncertain processing time. The decision in the SR is made in real time given the robustness. The proposed SR is verified under different scenarios, and the results are compared with the existing heuristic rules. Simulation results show that the proposed SR can effectively improve the robustness of the scheduling scheme with a slight performance loss.
关键词: semiconductor manufacturing system uncertain processing time dynamic scheduling slack-based robust scheduling rule
Evaluation of liquefaction-induced lateral displacement using Bayesian belief networks
Mahmood AHMAD, Xiao-Wei TANG, Jiang-Nan QIU, Feezan AHMAD
《结构与土木工程前沿(英文)》 2021年 第15卷 第1期 页码 80-98 doi: 10.1007/s11709-021-0682-3
关键词: Bayesian belief network seismically induced soil liquefaction interpretive structural modeling lateral displacement
李立希,李嘉
《中国工程科学》 2001年 第3卷 第3期 页码 61-64
知识库系统是一种专门存储、管理大量知识的机构。文章以可拓学的理论和方法为指导,提出可拓知识表示法和可拓知识库系统的特点与构架。给出了可拓知识表示的形式化语义,其基本单元是知识物元;阐述了矛盾问题求解的形式表示,其核心是问题的物元模型,通过可拓算子把不相容问题转化为相容问题;相关方式推理是可拓知识库系统推理机的特点,是传统规则推理的推广。可拓知识库采用可拓知识表示方法,是传统知识库的一个超集;可拓知识库系统由目标库、条件库、公用知识库、分类知识库、推理机与知识库管理系统组成。
Entity and relation extraction with rule-guided dictionary as domain knowledge
《工程管理前沿(英文)》 页码 610-622 doi: 10.1007/s42524-022-0226-0
关键词: entity extraction relation extraction prior knowledge domain rule
Theory and method of mechanism system design
Huijun ZOU, Qinghua LIANG, Qing ZHANG
《机械工程前沿(英文)》 2010年 第5卷 第4期 页码 399-411 doi: 10.1007/s11465-010-0116-8
关键词: mechanism system creative design process model function solving model process action procedure mechanisms knowledge base principle of mechanism system composition
Intelligent fault diagnostic system based on RBR for the gearbox of rolling mills
Lixin GAO, Lijuan WU, Yan WANG, Houpei WEI, Hui YE
《机械工程前沿(英文)》 2010年 第5卷 第4期 页码 483-490 doi: 10.1007/s11465-010-0118-6
关键词: rule-based reasoning fault diagnosis intelligent system gear box
《工程管理前沿(英文)》 页码 391-405 doi: 10.1007/s42524-022-0206-4
关键词: system availability product-service integration installed base new product introduction service supply chain reliability-maintenance-inventory optimization
Physiological functions and clinical implications of the N-end rule pathway
null
《医学前沿(英文)》 2016年 第10卷 第3期 页码 258-270 doi: 10.1007/s11684-016-0458-7
The N-end rule pathway is a unique branch of the ubiquitin-proteasome system in which the determination of a protein’s half-life is dependent on its N-terminal residue. The N-terminal residue serves as the degradation signal of a protein and thus called N-degron. N-degron can be recognized and modifed by several steps of post-translational modifications, such as oxidation, deamination, arginylation or acetylation, it then polyubiquitinated by the N-recognin for degradation. The molecular basis of the N-end rule pathway has been elucidated and its physiological functions have been revealed in the past 30 years. This pathway is involved in several biological aspects, including transcription, differentiation, chromosomal segregation, genome stability, apoptosis, mitochondrial quality control, cardiovascular development, neurogenesis, carcinogenesis, and spermatogenesis. Disturbance of this pathway often causes the failure of these processes, resulting in some human diseases. This review summarized the physiological functions of the N-end rule pathway, introduced the related biological processes and diseases, with an emphasis on the inner link between this pathway and certain symptoms.
关键词: N-end rule pathway Ate1 cardiovascular development neurogenesis spermatogenesis neurodegenerative disorders Johanson–Blizzard syndrome
Pankaj SHARMA,Ajai JAIN
《机械工程前沿(英文)》 2014年 第9卷 第4期 页码 380-389 doi: 10.1007/s11465-014-0315-9
Stochastic dynamic job shop scheduling problem with consideration of sequence-dependent setup times are among the most difficult classes of scheduling problems. This paper assesses the performance of nine dispatching rules in such shop from makespan, mean flow time, maximum flow time, mean tardiness, maximum tardiness, number of tardy jobs, total setups and mean setup time performance measures viewpoint. A discrete event simulation model of a stochastic dynamic job shop manufacturing system is developed for investigation purpose. Nine dispatching rules identified from literature are incorporated in the simulation model. The simulation experiments are conducted under due date tightness factor of 3, shop utilization percentage of 90 % and setup times less than processing times. Results indicate that shortest setup time (SIMSET) rule provides the best performance for mean flow time and number of tardy jobs measures. The job with similar setup and modified earliest due date (JMEDD) rule provides the best performance for makespan, maximum flow time, mean tardiness, maximum tardiness, total setups and mean setup time measures.
关键词: scheduling stochastic dynamic job shop sequence-dependent setup times dispatching rule simulation
Parham SHOAEI, Houtan Tahmasebi OROMI
《结构与土木工程前沿(英文)》 2019年 第13卷 第4期 页码 890-903 doi: 10.1007/s11709-019-0524-8
关键词: tuned liquid damper lead-rubber bearing system probabilistic framework steel shear building relative performance index Monte-Carlo sampling
聚乙烯生产过程操作优化知识库设计与实现 Article
钟伟民, 李超远, 彭鑫, 万锋, 安许峰, 田洲
《工程(英文)》 2019年 第5卷 第6期 页码 1041-1048 doi: 10.1016/j.eng.2019.09.004
构建聚乙烯生产过程领域知识库,形成可复用的生产知识,有助于提升化工行业的智能制造水平。本文结合聚乙烯生产工艺特点,根据实际生产操作需求,设计了知识库的总体结构。引入本体作为聚乙烯生产过程领域知识表示和共享的载体,使用七步法对聚乙烯生产过程进行本体建模,构建了包含知识本体和推理分析的本体库;建立操作条件和分子量分布(MWD)之间的BP神经网络模型,进行MWD的预测;采用差分进化算法对MWD进行优化,实现对操作参数的优化。以MYSQL数据库作为后台支撑数据库,结合Java语言对知识库系统进行设计和开发,实现了基于Browser/Server框架的聚乙烯生产过程操作优化知识库系统。在实际工业应用中,初步验证了该知识库能够满足聚乙烯生产过程操作优化和管理的功能需求,并具有推广到其他化工生产应用场景的价值。
Study of base friction simulation tests based on a complicated engineered bridge slope
Liu HE, Guang WU, Hua WANG
《结构与土木工程前沿(英文)》 2012年 第6卷 第4期 页码 393-397 doi: 10.1007/s11709-012-0174-6
关键词: base friction test slope stability evaluation bridge slope
毕建欣,张岐山
《中国工程科学》 2005年 第7卷 第4期 页码 88-94
介绍了关联规则挖掘算法的基本原理,并按照挖掘中涉及到的变量数目(维数)、数据的抽象层次和处理变量的类别(布尔型和数值型),依次对关联规则挖掘算法的研究进行综述,并对一些典型的算法进行分析和比较,最后展望了关联规则挖掘算法的研究方向。
标题 作者 时间 类型 操作
Identification of abnormal operating conditions and intelligent decision system
Xiuliang LI, Junjie JIANG, Hongye SU, Jian CHU
期刊论文
Novel slack-based robust scheduling rule for a semiconductor manufacturing system with uncertain processing
Juan LIU, Fei QIAO, Yumin MA, Weichang KONG
期刊论文
Evaluation of liquefaction-induced lateral displacement using Bayesian belief networks
Mahmood AHMAD, Xiao-Wei TANG, Jiang-Nan QIU, Feezan AHMAD
期刊论文
Intelligent fault diagnostic system based on RBR for the gearbox of rolling mills
Lixin GAO, Lijuan WU, Yan WANG, Houpei WEI, Hui YE
期刊论文
Bridging reliability and operations management for superior system availability: Challenges and opportunities
期刊论文
Analysis of dispatching rules in a stochastic dynamic job shop manufacturing system with sequence-dependent
Pankaj SHARMA,Ajai JAIN
期刊论文
A combined control strategy using tuned liquid dampers to reduce displacement demands of base-isolated
Parham SHOAEI, Houtan Tahmasebi OROMI
期刊论文
Study of base friction simulation tests based on a complicated engineered bridge slope
Liu HE, Guang WU, Hua WANG
期刊论文