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Ant colony optimization for assembly sequence planning based on parameters optimization

Zunpu HAN, Yong WANG, De TIAN

《机械工程前沿（英文）》 2021年 第16卷 第2期   页码 393-409 doi: 10.1007/s11465-020-0613-3

摘要： As an important part of product design and manufacturing, assembly sequence planning (ASP) has a considerable impact on product quality and manufacturing costs. ASP is a typical NP-complete problem that requires effective methods to find the optimal or near-optimal assembly sequence. First, multiple assembly constraints and rules are incorporated into an assembly model. The assembly constraints and rules guarantee to obtain a reasonable assembly sequence. Second, an algorithm called SOS-ACO that combines symbiotic organisms search (SOS) and ant colony optimization (ACO) is proposed to calculate the optimal or near-optimal assembly sequence. Several of the ACO parameter values are given, and the remaining ones are adaptively optimized by SOS. Thus, the complexity of ACO parameter assignment is greatly reduced. Compared with the ACO algorithm, the hybrid SOS-ACO algorithm finds optimal or near-optimal assembly sequences in fewer iterations. SOS-ACO is also robust in identifying the best assembly sequence in nearly every experiment. Lastly, the performance of SOS-ACO when the given ACO parameters are changed is analyzed through experiments. Experimental results reveal that SOS-ACO has good adaptive capability to various values of given parameters and can achieve competitive solutions.

关键词： assembly sequence planning     ant colony optimization     symbiotic organisms search     parameter optimization    

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基于petri网装配序列灰色聚类决策研究

莫茜,罗毅

《中国工程科学》 2008年 第10卷 第11期   页码 65-68

摘要：

利用petri网直观图形化特点建立装配模型，并根据petri网原理得出可行装配序列。影响可行装配序列的大部分因素是定性的、模糊的、非数值的，将装配序列看作灰色系统，采用灰色聚类决策方法对可行序列进行评估。分析了影响因素的灰色分类并且研究了灰色聚类决策步骤。实例分析表明，该方法为petri网原理所得可行序列进行正确的评估并且得出决策向量。

关键词： 装配序列     petri网     灰色聚类决策    

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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    

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Transforming bacterial disease surveillance and investigation using whole-genome sequence to probe the

null

《医学前沿（英文）》 2018年 第12卷 第1期   页码 23-33 doi: 10.1007/s11684-017-0607-7

摘要：

Two decades have passed since the first bacterial whole-genome sequencing, which provides new opportunity for microbial genome. Consequently, considerable genetic diversity encoded by bacterial genomes and among the strains in the same species has been revealed. In recent years, genome sequencing techniques and bioinformatics have developed rapidly, which has resulted in transformation and expedited the application of strategy and methodology for bacterial genome comparison used in dissection of infectious disease epidemics. Bacterial whole-genome sequencing and bioinformatic computing allow genotyping to satisfy the requirements of epidemiological study in disease control. In this review, we outline the significance and summarize the roles of bacterial genome sequencing in the context of bacterial disease control and prevention. We discuss the applications of bacterial genome sequencing in outbreak detection, source tracing, transmission mode discovery, and new epidemic clone identification. Wide applications of genome sequencing and data sharing in infectious disease surveillance networks will considerably promote outbreak detection and early warning to prevent the dissemination of bacterial diseases.

关键词： genome sequencing     genomic epidemiology     bacteria     surveillance     infectious diseases    

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A novel sequence batch membrane carbonation photobioreactor developed for microalgae cultivation

Caiyun Hou, Sen Qiao, Yue Yang, Jiti Zhou

《环境科学与工程前沿（英文）》 2019年 第13卷 第6期 doi: 10.1007/s11783-019-1176-6

摘要： • A novel SBM-C-PBR was constructed for microalgae cultivation. • Membrane fouling was greatly mitigated by membrane carbonation. • NH4+ and P removal rates were around 80% in SBM-C-PBR. • Biomass was completely retained by membrane. In this study, a novel sequence batch membrane carbonation photobioreactor was developed for microalgae cultivation. Herein, membrane module was endowed functions as microalgae retention and CO2 carbonation. The results in the batch experiments expressed that the relatively optimal pore size of membranes was 30 nm, photosynthetically active radiation was 36 W/m2 and the CO2 concentration was 10% (v/v). In long-term cultivation, the microalgal concentration separately accumulated up to 1179.0 mg/L and 1296.4 mg/L in two periods. The concentrations of chlorophyll a, chlorophyll b and carotenoids were increased about 23.2, 14.9 and 6.3 mg/L respectively in period I; meanwhile, the accumulation was about 25.0, 14.5, 6.6 mg/L respectively in the period II. Furthermore, the pH was kept about 5.5–7.5 due to intermittent carbonation mode, which was suitable for the growth of microalgae. Transmembrane pressure (TMP) was only increased by 0.19 and 0.16 bar in the end of periods I and II, respectively. The pure flux recovered to 75%–80% of the original value by only hydraulic cleaning. Scanning electron microscope images also illustrated that carbonation through membrane module could mitigate fouling levels greatly.

关键词： Membrane carbonation     SBM-C-PBR     Cultivate microalgae     Membrane fouling    

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Assembly design system based on engineering connection

Wensheng YIN

《机械工程前沿（英文）》 2016年 第11卷 第4期   页码 423-432 doi: 10.1007/s11465-016-0382-1

摘要：

An assembly design system is an important part of computer-aided design systems, which are important tools for realizing product concept design. The traditional assembly design system does not record the connection information of production on the engineering layer; consequently, the upstream design idea cannot be fully used in the downstream design. An assembly design model based on the relationship of engineering connection is presented. In this model, all nodes are divided into two categories: The component and the connection. Moreover, the product is constructed on the basis of the connection relationship of the components. The model is an And/Or graph and has the ability to record all assembly schemes. This model records only the connection information that has engineering application value in the product design. In addition, this model can significantly reduce the number of combinations, and is very favorable for the assembly sequence planning in the downstream. The system contains a connection knowledge system that can be mapped to the connection node, and the connection knowledge obtained in practice can be returned to the knowledge system. Finally, VC++6.0 is used to develop a prototype system called Connect-based Assembly Planning (CAP). The relationship between the CAP system and the commercial assembly design system is also established.

关键词： product design     assembly design     engineering connection     assembly sequence planning    

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Characterization of the dissolved organic matter in sewage effluent of sequence batch reactor: the impact

Jin GUO, Feng SHENG, Jianhua GUO, Xiong YANG, Mintao MA, Yongzhen PENG

《环境科学与工程前沿（英文）》 2012年 第6卷 第2期   页码 280-287 doi: 10.1007/s11783-011-0336-0

摘要： Dissolved organic matter (DOM) transformation in sequence batch reactor (SBR) fed with carbon sources of different biodegradability was investigated. During the biologic degradation process, the low molecular weight (MW) fraction (<1 kDa) gradually decreased, while the refractory compounds with higher aromaticity were aggregated. Size exclusion chromatography (SEC) and fluorescence of excitation emission matrices (EEM) demonstrated that more biopolymers (polysaccharides or proteins) and humic-like substances were presented in the extracellular polymeric substance (EPS) extracted from the SBR fed with sodium acetate or glucose, while the EPS from SBR fed with slowly biodegradable dissolved organic carbon (DOC) substrate-starch had relatively less biopolymers. Comparing the EfOM in sewage effluent of three SBRs, the effluent from SBR fed with starch is more aromatic. Organic carbon with MW>1 kDa as well as the hydrophobic fraction in DOM gradually increased with the carbon sources changing from sodium acetate to glucose and starch. The DOC fractionation and the EEM all demonstrated that EfOM from the effluent of the SBR fed with starch contained more fulvic acid-like substances comparing with the SBR fed with sodium acetate and glucose.

关键词： effluent organic matter (EfOM)     extracellular polymeric substance (EPS)     molecular weight distribution (MWD)     hydrophobic     hydrophilic     excitation emission matrices (EEM)    

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denitrifying phosphorus removal in a predenitrification anaerobic/anoxic/post-aeration+ nitrification sequence

Weihua Zhao, Meixiang Wang, Jianwei Li, Yu Huang, Baikun Li, Cong Pan, Xiyao Li, Yongzhen Peng

《环境科学与工程前沿（英文）》 2020年 第14卷 第3期 doi: 10.1007/s11783-020-1233-1

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泰州大桥悬索主桥钢箱梁吊装施工顺序的确定

王峻,梁进达

《中国工程科学》 2012年 第14卷 第5期   页码 41-45

摘要：

泰州大桥是世界上首座超千米的三塔两跨悬索桥，主跨为2×1 080 m，中塔采用纵向“人”字形、横向门式框架型钢塔，边塔采用门式框架型混凝土塔，加劲梁为扁平流线型钢箱梁结构，全桥共136片钢箱梁，总重约33 426 t。通过分析钢箱梁吊装顺序对结构体系和施工难度的影响，确定了三塔悬索桥合适的钢箱梁吊装顺序。

关键词： 三塔两跨悬索桥     钢箱梁     吊装顺序    

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吖啶– 核定位序列偶联构建的高活性抗菌肽 Artical

Wei Zhang,Xiaoli Yang,Jingjing Song,Xin Zheng,Jianbo Chen,Panpan Ma,Bangzhi Zhang,Rui Wang

《工程（英文）》 2015年 第1卷 第4期   页码 500-505 doi: 10.15302/J-ENG-2015106

摘要：

多重耐药菌的出现迫切需要发现具有新作用机制的抗生素。在本研究中，笔者将疏水的吖啶分子连接到核定位序列 (NLS) 的N末端合成了一种新型的抗菌药物Acr3-NLS。为了进 一步提高该试剂的抗菌活性，笔者将两个单体Acr3-NLS分子通过二硫键连接合成了二聚体(Acr3-NLS)2。结果显示，与NLS相比，Acr3-NLS，特别是(Acr3-NLS)2，对革兰阴性菌和革兰阳性菌表现出显著的抗菌活性。随后，其作用机制的研究表明，Acr3-NLS 和(Acr3-NLS)2 可通过细胞膜破坏方式和DNA 结合方式杀死细菌。作用于细胞膜和细胞内DNA的双靶点抑杀机制可以降低细菌对Acr3-NLS 和(Acr3-NLS)2 产生耐药性的风险。总之， 本研究提供了一种新的策略，可用于设计具有双重作用机制的高效抗菌药物。

关键词： 吖啶     核定位序列     共轭连接     抗菌活性     作用机制    

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A belated revelation: from gastroesophageal reflux derived asthma to laryngotracheal irritation even spasm

WANG Zhonggao

《医学前沿（英文）》 2008年 第2卷 第2期   页码 127-129 doi: 10.1007/s11684-008-0023-0

摘要： The author has been inspired by the Global Evidence-Based Consensus for gastroesophageal reflux (GER), which put forward four extra-esophageal syndromes: reflux cough syndrome, reflux laryngitis syndrome, reflux dental erosion syndrome and the reflux asthma syndrome. The author himself happened to receive five emergency rescue treatments following apparent “bronchial asthma”, which was to be diagnosed as GER at his own insistence. PPI resulted in some relief. After being rescued again from suffocation, he had a fundaplication, which was performed at the Englewood Hospital & Medical Center, Englewood, USA in March 2006. The procedure immediately cleared up his “asthma”. A month later he brought forth a Center for GER in an army hospital in Beijing, China. Up to now, 601 patients with mainly respiratory distress (84%) were treated by Stretta Radiofrequency, 58 by surgery and more by PPI. The GER Center is now complete with a ward. GER patients with respiratory distresses turned out to fare better than those with acid regurgitation. A nozzle-shaped pharynx was found in patients with the reflux. Animal study revealed that the refluxate entered into trachea and even lungs. Gradually a hypothesis of a gastro-oesophago-laryngo-tracheal reflux took shape.Our modest effort to treat GER-derived respiratory distresses has got off to an encouraging start amid relative shortage of experience and facilities. We would like to share two thoughts with scholars and experts at home and abroad:1. The GER-derived asthma is not asthma, but GER pure and simple;2. The pathogenesis of “asthma” is not asthma, but laryngotracheal irritation/spasm and its sequence.

关键词： laryngotracheal irritation/spasm     gastro-oesophago-laryngo-tracheal     sequence     fundaplication     encouraging    

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NRTIs’ effect on the sequence of mitochondrial DNA HV 2 in HIV infected patients

Ya-Song WU MD, PhD, Xin-Yue CHEN MD, Ying SHI PhD, Hao WU MD, De-Xi CHEN MD, PhD, Yu SUN MD, Fu-Jie ZHANG MD,

《医学前沿（英文）》 2010年 第4卷 第2期   页码 177-184 doi: 10.1007/s11684-010-0038-1

摘要： Potent combination antiretroviral therapy (cART) has significantly improved the life expectancy of people living with human immunodeficiency virus (HIV), but it has many side effects such as lipodystrophy (LD), hepatic steatosis, and lactic acidosis. Nucleoside reverse transcriptase inhibitors (NRTIs) could damage the mitochondria by inhibiting the human DNA polymerase gamma, leading to mtDNA deletion. However, it remains uncertain whether NRTIs could induce the hypervariable region (HV) mutations of the D loop of mitochondria in Chinese HIV/AIDS patients, and whether that effect is different between individuals with and without LD. Hereby, 30 Chinese AIDS patients who were receiving antiretroviral drugs were recruited, among which 16 had symptomatic LD and 14 did not. Blood samples were collected prior to and after 96 weeks of treatment. Total DNA was extracted from peripheral blood mononuclear cells (PBMCs). Fragments of 728 bp in length containing HV 2 were amplified by standard polymerase chain reaction (PCR). Direct DNA-sequencing analysis techniques were used to detect mitochondrial sequence variants between paired longitudinal samples. Alterations were compared with the revised Cambridge Reference Sequence (rCRS) to determine mutation or polymorphism. Results showed that two years after ART, totally seven cases exhibited sequence variations, five individuals showed 73€A→G revised variation (two with and three without LD), while two cases of LD were found to have other nucleotide alterations. There was no new alteration in individuals without LD. In conclusion, NRTIs could induce mutation of mtDNA HV 2, which might contribute to the development of LD.

关键词： nucleoside reverse transcriptase inhibitors     human immunodeficiency virus     mitochondrial DNA     D loop     mutation    

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非规则时序信息的结构转换及演化的细化分析

欧阳首承,张葵,郝丽萍,周莉蓉

《中国工程科学》 2005年 第7卷 第4期   页码 36-41

摘要：

按时间不占有物质维的概念，将时序性自动信息转换为结构信息。结果显示自动信息的非规则可用于降水的细化预测，也为更广泛的演化非规则信息提供了可应用的方法，充分地说明了气象问题是演化科学的问题，或者说将其理解为牛顿的惯性系领域的分支科学是有待商榷的。

关键词： 时序信息     细化     结构非规则     方位相空间     演化    

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denitrifying phosphorus removal in a pre-denitrification anaerobic/anoxic/post-aeration+ nitrification sequence

Weihua Zhao, Meixiang Wang, Jianwei Li, Yu Huang, Baikun Li, Cong Pan, Xiyao Li, Yongzhen Peng

《环境科学与工程前沿（英文）》 2018年 第12卷 第5期 doi: 10.1007/s11783-018-1084-1

摘要：

A novel two sludge pre-A2NSBR system was developed.

Advanced N and P removal was optimized to treat real domestic wastewater.

Nitrifiers and PAOs were enriched with 19.41% and 26.48%, respectively.

Acetate was demonstrated as the high-quality carbon source type.

关键词： Denitrifying phosphorus removal     C/N ratio     Nitrate recycling     Carbon source type     Biological nutrient removal     Pre-A2NSBR system    

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Architecture design of Exit-Entry Administration Building of Shanghai Municipal Public Security Bureau

JIANG Limin, JIANG Du

《结构与土木工程前沿（英文）》 2007年 第1卷 第2期   页码 234-239 doi: 10.1007/s11709-007-0029-8

摘要： In retrospect of the architecture design of Exit-Entry Administration Building of Shanghai Municipal Public Security Bureau, this paper elaborates on the architect s pursuit of the symbol of the image, the fluidity of the space and the sequence of the function. It promotes a case which deals with the harmony of the architecture individuality and the urban space commonness in city center.

关键词： commonness     retrospect     sequence     architecture individuality     architect    

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标题 作者 时间 类型 操作

Ant colony optimization for assembly sequence planning based on parameters optimization

Zunpu HAN, Yong WANG, De TIAN

期刊论文

基于petri网装配序列灰色聚类决策研究

莫茜,罗毅

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

Transforming bacterial disease surveillance and investigation using whole-genome sequence to probe the

null

期刊论文

A novel sequence batch membrane carbonation photobioreactor developed for microalgae cultivation

Caiyun Hou, Sen Qiao, Yue Yang, Jiti Zhou

期刊论文

Assembly design system based on engineering connection

Wensheng YIN

期刊论文

Characterization of the dissolved organic matter in sewage effluent of sequence batch reactor: the impact

Jin GUO, Feng SHENG, Jianhua GUO, Xiong YANG, Mintao MA, Yongzhen PENG

期刊论文

denitrifying phosphorus removal in a predenitrification anaerobic/anoxic/post-aeration+ nitrification sequence

Weihua Zhao, Meixiang Wang, Jianwei Li, Yu Huang, Baikun Li, Cong Pan, Xiyao Li, Yongzhen Peng

期刊论文

泰州大桥悬索主桥钢箱梁吊装施工顺序的确定

王峻,梁进达

期刊论文

吖啶– 核定位序列偶联构建的高活性抗菌肽

Wei Zhang,Xiaoli Yang,Jingjing Song,Xin Zheng,Jianbo Chen,Panpan Ma,Bangzhi Zhang,Rui Wang

期刊论文

A belated revelation: from gastroesophageal reflux derived asthma to laryngotracheal irritation even spasm

WANG Zhonggao

期刊论文

NRTIs’ effect on the sequence of mitochondrial DNA HV 2 in HIV infected patients

Ya-Song WU MD, PhD, Xin-Yue CHEN MD, Ying SHI PhD, Hao WU MD, De-Xi CHEN MD, PhD, Yu SUN MD, Fu-Jie ZHANG MD,

期刊论文

非规则时序信息的结构转换及演化的细化分析

欧阳首承,张葵,郝丽萍,周莉蓉

期刊论文

denitrifying phosphorus removal in a pre-denitrification anaerobic/anoxic/post-aeration+ nitrification sequence

Weihua Zhao, Meixiang Wang, Jianwei Li, Yu Huang, Baikun Li, Cong Pan, Xiyao Li, Yongzhen Peng

期刊论文

Architecture design of Exit-Entry Administration Building of Shanghai Municipal Public Security Bureau

JIANG Limin, JIANG Du

期刊论文