Search | Engineering

订阅投稿

首页工程期刊工程焦点工程成就工程前沿关于我们 English

资源类型

期刊论文 21

年份

2023 1

2022 2

2021 2

2020 1

2019 2

2018 1

2015 2

2014 1

2009 2

2005 2

2004 1

2003 1

2001 2

展开︾

关键词

神经网络 2

1)模型 1

GM(1 1

不可分辨性 1

产业政策 1

决策规则 1

北斗卫星导航系统 1

区间灰数 1

卫星导航产业 1

反向起爆 1

情感分类；跨领域；关联规则 1

控制规则自调整 1

智能专家系统 1

标准区间灰数 1

模糊控制 1

模糊模型 1

模糊规则 1

模糊逻辑 1

模糊集 1

展开︾

检索范围：

排序：展示方式：

Analysis of dispatching rules in a stochastic dynamic job shop manufacturing system with sequence-dependent

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

摘要：

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

HTML PDF 收藏

Optimization of multi-objective integrated process planning and scheduling problem using a priority based optimization algorithm

Muhammad Farhan AUSAF,Liang GAO,Xinyu LI

《机械工程前沿（英文）》 2015年第10卷第4期页码 392-404 doi: 10.1007/s11465-015-0353-y

摘要：

For increasing the overall performance of modern manufacturing systems, effective integration of process planning and scheduling functions has been an important area of consideration among researchers. Owing to the complexity of handling process planning and scheduling simultaneously, most of the research work has been limited to solving the integrated process planning and scheduling (IPPS) problem for a single objective function. As there are many conflicting objectives when dealing with process planning and scheduling, real world problems cannot be fully captured considering only a single objective for optimization. Therefore considering multi-objective IPPS (MOIPPS) problem is inevitable. Unfortunately, only a handful of research papers are available on solving MOIPPS problem. In this paper, an optimization algorithm for solving MOIPPS problem is presented. The proposed algorithm uses a set of dispatching rules coupled with priority assignment to optimize the IPPS problem for various objectives like makespan, total machine load, total tardiness, etc. A fixed sized external archive coupled with a crowding distance mechanism is used to store and maintain the non-dominated solutions. To compare the results with other algorithms, a C-matric based method has been used. Instances from four recent papers have been solved to demonstrate the effectiveness of the proposed algorithm. The experimental results show that the proposed method is an efficient approach for solving the MOIPPS problem.

关键词： integrated process planning and scheduling (IPPS) dispatching rules priority based optimization algorithm multi-objective optimization

HTML PDF 收藏

Space-time evolution rules study on acoustic emission location in rock under cyclic loading

Jiang XU, Shuchun LI, Yunqi TAO, Yongdong JIANG, Xiaojun TANG,

《结构与土木工程前沿（英文）》 2009年第3卷第4期页码 422-427 doi: 10.1007/s11709-009-0056-8

摘要： An acoustic emission (AE) location experiment was performed on sandstone using an advanced AE test system. The space-time evolution rule regarding damage was analyzed under cyclic loading as well as AE. The results show that AE on static loading process is consistent with the damage evolution rule of compression and the elastic-plastic deformation phase; at the beginning of cyclic loading with low duration time and energy, AE events came from a small crack. The location result showed that most events occurred in the core zone forming at the static loading process, and the location points changed slowly. AE energy changed little during the metaphase of cyclic process. There was a modest increase of location points in every cycle. The tendency of steady development could be predicted from the AE location events. At the end of each cyclic loading, the quantity of AE events and energy increased quite rapidly, reaching a maximum at the last cycle. AE events had high energy and duration time. Location events changed quite rapidly and assembled and linked continuously in the core zone. At the same time, they expanded to the top of specimen. A macroscopic crack finally formed. In the postfailure process, some AE events still existed due to fracturing of gliding friction. Owing to the inner stress balance of rock even after loading stopped, minor AE events still occurred.

关键词： location result AE location consistent friction elastic-plastic deformation

HTML PDF 收藏

一种控制规则自调整的模糊控制器

程金,张承慧,夏东伟

《中国工程科学》 2003年第5卷第9期页码 78-81

摘要：

根据模糊控制理论和实际工程经验，设计了一个控制规则能够自调整的模糊控制器，详细介绍了该模糊控制器的控制原理和运行机制，并作出了仿真。该模糊控制器控制精度高，动态和稳态性能均优于传统的PID和基本模糊控制器，且具有较好的鲁棒性和抗扰动能力。仿真和工程实践证明，该模糊控制器具有简便、稳定的优点，且易于工程实现，具有较高的工程应用价值。

关键词：模糊控制控制规则自调整自适应

HTML PDF 收藏

The prior rules of designing Ti

Yingying Jian, Danyao Qu, Lihao Guo, Yujin Zhu, Chen Su, Huanran Feng, Guangjian Zhang, Jia Zhang, Weiwei Wu, Ming-Shui Yao

《化学科学与工程前沿（英文）》 2021年第15卷第3期页码 505-517 doi: 10.1007/s11705-020-2013-y

摘要： Working temperature, sensitivity, and selectivity are some of the characteristics of the applied gas sensors. How to design and fabricate an ideal gas sensor working at room temperature is still challenging and attracting lots of interest. Two-dimensional (2D) materials with ultra-thin structure have been demonstrated as a family of ideal candidates to achieve this goal. Among them, Ti C T MXene, a kind of layered sheet synthesized by selectively etching MAX phases materials, shows remarkable potential to be the sensitive materials solely or in a composite. However, their designing rules are still lacking critical thinking from the viewpoint of the intrinsic property of Ti C T MXene based materials. In this article, two critical features, i.e., the thickness of the sensitive materials, and the scope of the analytes, are elaborated towards Ti C T MXene based gas sensors after characterizing the performance of sensing reducing gases (NH and CO) and oxidizing gas (NO ). First, the thinner the Ti C T MXene sensitive layer, the better the sensitivity. Second, the Ti C T MXene based gas sensor is not suitable for strong and moderate oxidation gas due to its ease of oxidation. These two rules are demonstrated, and could be considered with priority both in the future researches and practical applications.

关键词： MXene based sensor prior reducing gases oxidizing gases

HTML PDF 收藏

基于关联规则进行词对齐的跨领域情感分类算法 None

Xi-bin JIA, Ya JIN, Ning LI, Xing SU, Barry CARDIFF, Bir BHANU

《信息与电子工程前沿（英文）》 2018年第19卷第2期页码 260-272 doi: 10.1631/FITEE.1601679

摘要：文本情感分类被应用于企业用户管理系统，通过自动对诸如评论、博客等带有情感倾向性文字进行分析，帮助商家更好地了解用户对商品或者服务的态度。然而，评论和博客等内容常源于不同应用领域，为每个领域训练一个能准确预测情感倾向的分类器非常困难。主要原因是，在不同领域，人们通常会用不同特征词表达相同情感，并且难以找到一个直接的映射函数，以建立不同领域特征词间的映射关系，从而消除领域间差异。因此，将某个领域训练好的分类器直接应用到另一个领域时，会因为领域间差异使得分类器准确率急速下降。本文提出一个新的基于关联规则进行特征词对齐的跨领域情感分类算法，该算法通过在同一领域中挖掘具有强关联关系的领域共享词和领域专有词词对，建立直接映射关系，并以领域共享词为桥梁，在不同领域的特征专有词之间建立间接映射关系，从而在一定程度上消除了源领域和目标领域之间的差异，有效提升了跨领域情感分类准确率。在亚马逊数据库上的实验结果证明该算法提高了跨领域情感分类性能。

关键词：情感分类；跨领域；关联规则

HTML PDF 收藏

美国发布新规定以降低助听器购买门槛

Mitch Leslie

《工程（英文）》 2022年第14卷第7期页码 7-9 doi: 10.1016/j.eng.2022.05.008

HTML PDF 收藏

Overall HIEs deconstruction method and its application

Li LIN, Chengqi XUE,

《机械工程前沿（英文）》 2009年第4卷第4期页码 466-471 doi: 10.1007/s11465-009-0076-z

摘要： Based on the human interface elements (HIEs) as the emotional carriers, this paper researches the general analysis steps of hierarchical HIEs and puts forward a new systematical deconstruction method for Kansei engineering fields. A mobile phone is taken as the research subject, the emotional design rules are inferred based on the multiple-orientation information of human interfaces, and the emotional change law is grasped from a new perspective. The research on the deconstruction method promotes the study of Kansei engineering and is a significant guide and reference for the theory and practice of related product design fields.

关键词： product design relationship model human interface design rules emotion

HTML PDF 收藏

Recent advances in system reliability optimization driven by importance measures

Shubin SI, Jiangbin ZHAO, Zhiqiang CAI, Hongyan DUI

《工程管理前沿（英文）》 2020年第7卷第3期页码 335-358 doi: 10.1007/s42524-020-0112-6

摘要： System reliability optimization problems have been widely discussed to maximize system reliability with resource constraints. Birnbaum importance is a well-known method for evaluating the effect of component reliability on system reliability. Many importance measures (IMs) are extended for binary, multistate, and continuous systems from different aspects based on the Birnbaum importance. Recently, these IMs have been applied in allocating limited resources to the component to maximize system performance. Therefore, the significance of Birnbaum importance is illustrated from the perspective of probability principle and gradient geometrical sense. Furthermore, the equations of various extended IMs are provided subsequently. The rules for simple optimization problems are summarized to enhance system reliability by using ranking or heuristic methods based on IMs. The importance-based optimization algorithms for complex or large-scale systems are generalized to obtain remarkable solutions by using IM-based local search or simplification methods. Furthermore, a general framework driven by IM is developed to solve optimization problems. Finally, some challenges in system reliability optimization that need to be solved in the future are presented.

关键词： importance measure system performance reliability optimization optimization rules optimization algorithms

HTML PDF 收藏

Characterization of hidden rules linking symptoms and selection of acupoint using an artificial neural

Won-Mo Jung, In-Soo Park, Ye-Seul Lee, Chang-Eop Kim, Hyangsook Lee, Dae-Hyun Hahm, Hi-Joon Park, Bo-Hyoung Jang, Younbyoung Chae

《医学前沿（英文）》 2019年第13卷第1期页码 112-120 doi: 10.1007/s11684-017-0582-z

摘要： Comprehension of the medical diagnoses of doctors and treatment of diseases is important to understand the underlying principle in selecting appropriate acupoints. The pattern recognition process that pertains to symptoms and diseases and informs acupuncture treatment in a clinical setting was explored. A total of 232 clinical records were collected using a Charting Language program. The relationship between symptom information and selected acupoints was trained using an artificial neural network (ANN). A total of 11 hidden nodes with the highest average precision score were selected through a tenfold cross-validation. Our ANN model could predict the selected acupoints based on symptom and disease information with an average precision score of 0.865 (precision, 0.911; recall, 0.811). This model is a useful tool for diagnostic classification or pattern recognition and for the prediction and modeling of acupuncture treatment based on clinical data obtained in a real-world setting. The relationship between symptoms and selected acupoints could be systematically characterized through knowledge discovery processes, such as pattern identification.

关键词： acupuncture indication neural network pattern identification prediction

HTML PDF 收藏

我国综合交通工程科技现状及未来发展

何洪文,孙逢春,李梦林

《中国工程科学》 2023年第25卷第6期页码 202-211 doi: 10.15302/J-SSCAE-2023.06.012

摘要：

深入探讨综合交通工程科技发展的需求目标和共性难题，有助于推动我国综合交通的持续进步。本文从道路交通、轨道交通、水路交通、航空交通、城市综合交通5 个维度梳理了我国交通工程科技的发展现状，总结了由交通系统网联化、交通出行共享化、交通管控智慧化、交通运载运行协同化、交通布局立体化表征的我国综合交通工程科技的未来趋势。研究认为，可在综合交通体系化构建、综合交通数字化基础服务平台、综合交通指挥调度中心、综合交通相关服务等方向实施综合交通工程科技攻关，建议构建综合交通新体系、培育交通出行新模式、形成一体化综合交通网、建设多基综合交通枢纽、实施智能网联立体交通重大工程，以此精准驱动我国综合交通的高质量发展。

关键词：综合交通；工程科技；智能网联；智慧调度；立体交通

HTML PDF 收藏

Semantic Consistency and Correctness Verification of Digital Traffic Rules

Lei Wan,Changjun Wang,Daxin Luo,Hang Liu,Sha Ma,Weichao Hu,

《工程（英文）》 doi: 10.1016/j.eng.2023.04.016

摘要： The consensus of the automotive industry and traffic management authorities is that autonomous vehicles must follow the same traffic laws as human drivers. Using formal or digital methods, natural language traffic rules can be translated into machine language and used by autonomous vehicles. In this paper, a translation flow is designed. Beyond the translation, a deeper examination is required, because the semantics of natural languages are rich and complex, and frequently contain hidden assumptions. The issue of how to ensure that digital rules are accurate and consistent with the original intent of the traffic rules they represent is both significant and unresolved. In response, we propose a method of formal verification that combines equivalence verification with model checking. Reasonable and reassuring digital traffic rules can be obtained by utilizing the proposed traffic rule digitization flow and verification method. In addition, we offer a number of simulation applications that employ digital traffic rules to assess vehicle violations. The experimental findings indicate that our digital rules utilizing metric temporal logic (MTL) can be easily incorporated into simulation platforms and autonomous driving systems (ADS).

关键词： Autonomous driving Traffic rules Digitization Formalization Verification

HTML PDF 收藏

基于粗集方法的智能专家系统

曾黄麟

《中国工程科学》 2001年第3卷第2期页码 47-51

摘要：

文章主要介绍基于粗集方法的智能专家系统的基本构成、知识表达方式及学习推理方法。提出了利用不可分辨性或根据算法相容性进行知识简化，导出决策规则的方法，通过研究导师的知识与学习者的知识之间的依赖程度，找出每一概念的有用特征，进行知识简化和系统简化，导出决策规则的学习推理方法。

关键词：粗集方法智能专家系统不可分辨性知识简化决策规则

HTML PDF 收藏

超低能导爆索传爆原理及应用的研究

梅群,沈兆武,周听清

《中国工程科学》 2005年第7卷第6期页码 69-72

摘要：

系统地研究了超低能导爆索的传爆原理，结合工程实际需要，拓宽应用范围的研究，为深孔土岩爆破的反向起爆提出一种新型的，安全、可靠、高效的起爆网络。

关键词：超低能导爆索反向起爆炸药压死

HTML PDF 收藏

规则库自提取和简化的模糊系统

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

摘要：

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。

关键词：相似分析法模糊模型模糊规则模糊集神经网络