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期刊论文 10

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S-N曲线 1

人工智能 1

以人为本的管理系统 1

免疫学 1

全球标准方法 1

复发 1

大数据调度 1

工业4.0 1

智慧社会 1

智能维护 1

树脂灌注式螺栓 1

疲劳 1

社会5.0 1

结构加强 1

肝癌 1

肝移植 1

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A reversibility-gain model for integer Karhunen-Loève transform design in video coding

Xing-guo ZHU,Lu YU

《信息与电子工程前沿（英文）》 2015年 第16卷 第10期   页码 883-891 doi: 10.1631/FITEE.1500071

摘要： Karhunen-Loève transform (KLT) is the optimal transform that minimizes distortion at a given bit allocation for Gaussian source. As a KLT matrix usually contains non-integers, integer-KLT design is a classical problem. In this paper, a joint reversibility-gain (R-G) model is proposed for integer-KLT design in video coding. Specifically, the ‘reversibility’ is modeled according to distortion analysis in using forward and inverse integer transform without quantization. It not only measures how invertible a transform is, but also bounds the distortion introduced by the non-orthonormal integer transform process. The ‘gain’ means transform coding gain (TCG), which is a widely used criterion for transform design in video coding. Since KLT maximizes the TCG under some assumptions, here we define the TCG loss ratio (LR) to measure how much coding gain an integer-KLT loses when compared with the original KLT. Thus, the R-G model can be explained as follows: subject to a certain TCG LR, an integer-KLT with the best reversibility is the optimal integer transform for a given non-integer-KLT. Experimental results show that the R-G model can guide the design of integer-KLTs with good performance.

关键词： Integer transform     Karhunen-Loè     ve transform (KLT)     Integer-KLT     Transform coding     Video coding    

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Probabilistic stability of uncertain composite plates and stochastic irregularity in their buckling mode shapes: A semi-analytical non-intrusive approach

《结构与土木工程前沿（英文）》   页码 179-190 doi: 10.1007/s11709-022-0888-z

摘要： In this study, the mechanical properties of the composite plate were considered Gaussian random fields and their effects on the buckling load and corresponding mode shapes were studied by developing a semi-analytical non-intrusive approach. The random fields were decomposed by the Karhunen−Loève method. The strains were defined based on the assumptions of the first-order and higher-order shear-deformation theories. Stochastic equations of motion were extracted using Euler–Lagrange equations. The probabilistic response space was obtained by employing the non-intrusive polynomial chaos method. Finally, the effect of spatially varying stochastic properties on the critical load of the plate and the irregularity of buckling mode shapes and their sequences were studied for the first time. Our findings showed that different shear deformation plate theories could significantly influence the reliability of thicker plates under compressive loading. It is suggested that a linear relationship exists between the mechanical properties’ variation coefficient and critical loads’ variation coefficient. Also, in modeling the plate properties as random fields, a significant stochastic irregularity is obtained in buckling mode shapes, which is crucial in practical applications.

关键词： uncertain composite plate     stochastic assume mode method     Karhunen−Loève theorem     polynomial chaos approach     plate buckling     irregularity in buckling mode shapes    

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Advancements in non-starch polysaccharides research for frozen foods and microencapsulation of probiotics

Martin LO,

《化学科学与工程前沿（英文）》 2009年 第3卷 第4期   页码 413-426 doi: 10.1007/s11705-009-0254-x

摘要： Conventionally used in the food industry as stabilizing, thickening, gelling, and suspending or dispersing agents, non-starch polysaccharides such as xanthan gum are known to improve the texture of certain frozen products. Another polysaccharide that has received significant attention in recent years is chitosan, a natural biopolymer derived from chitin. In the wake of growing interest in finding ideal encapsulating agents for probiotics, non-starch polysaccharides have been investigated. Scattered research can be found on the effect of each individual polysaccharide, but there remains a void in the literature in terms of closely comparing the characteristics of non-starch polysaccharides for these applications, especially when more than one biopolymer is employed. A good understanding of the tools capable of elucidating the underlying mechanisms involved is essential in ushering further development of their applications. Therefore, it is this review’s intention to focus on the selection criteria of non-starch polysaccharides based on their rheological properties, resistance to harsh conditions, and ability to improve sensory quality. A variety of critical tools is also carefully examined with respect to the attainable information crucial to frozen food and microencapsulation applications.

关键词： development     literature     attainable information     biopolymer     capable    

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Decomposition of perfluorooctanoic acid by microwave-activated persulfate: Effects of temperature, pH, and chloride ions

Yuchi LEE, Shanglien LO, Jeff KUO, Chinghong HSIEH

《环境科学与工程前沿（英文）》 2012年 第6卷 第1期   页码 17-25 doi: 10.1007/s11783-011-0371-x

摘要： Microwave-hydrothermal treatment of persistent and bioaccumulative perfluorooctanoic acid (PFOA) in water with persulfate ( ) has been found effective. However, applications of this process to effectively remediate PFOA pollution require a better understanding on free-radical scavenging reactions that also take place. The objectives of this study were to investigate the effects of pH (pH= 2.5, 6.6, 8.8, and 10.5), chloride concentrations (0.01–0.15 mol·L ), and temperature (60°C, 90°C, and 130°C) on persulfate oxidation of PFOA under microwave irradiation. Maximum PFOA degradation occurred at pH 2.5, while little or no degradation at pH 10.5. Lowering system pH resulted in an increase in PFOA degradation rate. Both high pH and chloride concentrations would result in more scavenging of sulfate free radicals and slow down PFOA degradation. When chloride concentrations were less than 0.04 mol·L at 90°C and 0.06 mol·L at 60°C, presence of chloride ions had insignificant impacts on PFOA degradation. However, beyond these concentration levels, PFOA degradation rates reduced significantly with an increase in chloride concentrations, especially under the higher temperature.

关键词： microwave     perfluorooctanoic acid     pH     persulfate     chloride ions     perfluorocarboxylic acids    

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Robust public-private partnerships for joint railway and property development

LO, Yue HUAI

《工程管理前沿（英文）》 2017年 第4卷 第4期   页码 437-450 doi: 10.15302/J-FEM-2017068

摘要： The involvement of the private sector in the construction or operation of an infrastructure project may enhance the financial viability of projects, which facilitates the formation of public-private partnership (PPP) for project delivery. PPP exploits the strength of the private sector by shifting certain project risks from the public party to the private sector who can efficiently manage certain risks. In joint railway and housing development, the approach of bundling railway and housing development (R&HD) allows cross-subsidization between immense railway construction cost and profitable housing rental revenue. This approach also provides flexibility in incorporating PPP models by distributing railway and housing revenues and costs and their inherent risks properly to the public and private sectors. Ng and Lo (2015a) developed an evaluation framework for joint railway and property development, which evaluates PPPs based on financial and construction criteria for selecting the best suitable PPP for a particular project. This study, which is based on the framework in Ng and Lo (2015a), aims to examine the robustness of various PPP configurations. This study analyzes the effects of PPP configurations on stakeholders’ risks and returns under population or demand growth and railway construction cost uncertainties. The eventual outcome of particular PPP configurations is also examined. This study also seeks to answer the following questions: How would optimal configuration change under highly volatile population and railway construction cost? Are there PPP configurations that are robust to these uncertainties and those that are sensitive to a particular uncertainty? This understanding is critical for managing risks and facilitating the formation of appropriate PPP for R&HD.

关键词： public-private partnership     BFOOD     housing and railway development    

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Quantifying and mapping spatial variability of Shanghai household carbon footprints

Shangguang YANG,Chunlan WANG,Kevin LO,Mark WANG,Lin LIU

《能源前沿（英文）》 2015年 第9卷 第1期   页码 115-124 doi: 10.1007/s11708-015-0348-8

摘要： Understanding the spatial variability of household carbon emissions is necessary for formulating sustainable and low-carbon energy policy. However, data on household carbon emissions is limited in China, the world’s largest greenhouse gases emitter. This study quantifies and maps household carbon emissions in Shanghai using a city-wide household survey. The findings reveal substantial spatial variability in household carbon emissions, especially in transport-related emissions. Low emission clusters are founded in Hongkou, Xuhui, Luwan, Jinshan, and Fengxian. High emission clusters are located in Jiading and Pudong. Overall, the spatial pattern of household carbon emissions in Shanghai is donut-shaped: lowest in the urban core, increasing in the surrounding suburban areas, and declining again in the urban fringe and rural regions. The household emissions are correlated with a number of housing and socioeconomic factors, including car ownership, type of dwelling, size of dwelling, age of dwelling, and income. The findings underscore the importance of a localized approach to low-carbon policy-making and implementation.

关键词： household carbon emissions     spatial variability     energy policy     Shanghai     China    

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Ambient air pollution and lung disease in China: health effects, study design approaches and future research

null

《医学前沿（英文）》 2015年 第9卷 第3期   页码 392-400 doi: 10.1007/s11684-015-0397-8

摘要：

Ambient air pollution in China has worsened following dramatic increases in industrialization, automobile use and energy consumption. Particularly bothersome is the increase in the PM2.5 fraction of pollutants. This fraction has been associated with increasing rates of cardio-respiratory disease in China and elsewhere. Ambient pollutant levels have been described in many of China’s cities and are comparable to previous levels in southern California. Lung cancer mortality in China has increased since the 1970s and has been higher in men and in urban areas, the exact explanation for which has not been determined. The estimation of individual risk for Chinese citizens living in areas of air pollution will require further research. Occupational cohort and case-control designs each have unique attributes that could make them helpful to use in this setting. Other important future research considerations include detailed exposure assessment and the possible use of biomarkers as a means to better understand and manage the threat posed by air pollution in China.

关键词： air pollution     PM2.5     lung disease     study design     epidemiology    

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智慧社会与人工智能——用于智能维护的大数据调度和全球标准方法 Article

Ruben Foresti, Stefano Rossi, Matteo Magnani, Corrado Guarino Lo Bianco, Nicola Delmonte

《工程（英文）》 2020年 第6卷 第7期   页码 835-846 doi: 10.1016/j.eng.2019.11.014

摘要：

人工智能（AI）在智慧社会中的运用需要对人类习惯进行分析，而这需要使用智能应用、智能基础架构、智能系统和智能网络的自动数据调度与分析。在这种情况下，培训和操作流程之间存在鸿沟，因此需要一种专门的方法来管理和提取海量数据，并进行相关的信息挖掘。本文提出的方法致力于在智能管理中使用接近零故障的高级诊断（AD）来缩小这种差距。该诊断程序在社会5.0的任何情况下都可以使用，由此降低所有管理层面的风险，并保证质量和可持续性。我们还开发了创新应用程序，可用于以人为本的管理系统，以支持操作流程维护工作的安排，从而降低培训成本、提高产量，并创建用于智能基础架构设计的人机网络空间。来自12家国际公司的研究结果证明，操作流程可进行全球标准化，因此我们设计了一种能够自主学习和升级的接近零故障的智能系统。本文提出的新方法为选择新一代智能制造和智能系统提供了指导，从而优化了人机交互以及相关的智能维护和教育。

关键词： 智能维护     智慧社会     人工智能     以人为本的管理系统     大数据调度     全球标准方法     社会5.0     工业4.0    

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肝内区域免疫对肝移植后肿瘤复发的影响 Review

刘江, 卢宠茂, 万钧

《工程（英文）》 2022年 第10卷 第3期   页码 57-64 doi: 10.1016/j.eng.2021.11.012

摘要：

肝脏恶性肿瘤是肝移植的一个主要适应症，但是肝移植后肿瘤复发却是影响受体长期生存的一个严峻临床挑战。肿瘤生物学特征、分期和移植后的免疫抑制状态一直被认为是肝癌复发的危险因素。而越来越多的证据表明，肝脏缺血再灌注（IR）对同种异体移植物的损伤则为肝移植后的肿瘤细胞侵袭性、转移性
提供了有利的免疫微环境。在活体肝移植中，边缘移植物（如小体积或脂肪移植物）的严重损伤与较低的无复发生存率之间的相关性，证实了IR 损伤与肿瘤复发之间的关联。IR 可引起肝内免疫微环境重构，包括恶化移植物损伤的促炎反应和加快组织修复的抗炎反应。然而，肝内区域免疫对移植后肿瘤复发的作
用尚不清晰。本文详述了IR 损伤诱导的肝内体液微环境和调节性区域免疫微环境，以及它们如何影响肝移植后肿瘤复发的最新研究进展。综合理解移植后肝内区域免疫，将为移植后肿瘤复发提供精准诊断、治疗和预后预测的新策略。

关键词： 肝移植     肝癌     复发     免疫学    

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基于统计分析的树脂灌注式螺栓连接疲劳强度评价

aacute;sio, Grzegorz Stanisław Lesiuk, Carlos Alberto da Silva Rebelo, Rui Artur Bartólo

《工程（英文）》 2017年 第3卷 第6期   页码 795-805 doi: 10.1016/j.eng.2017.12.001

摘要：
在对老旧的螺栓和铆接金属桥进行修补和加固时可以使用不同的方案。由于铆接链接技术目前并不常用，连接它需要特定的设备和熟练的工人。另一种解决方案是使用焊接。但是，老旧钢材的可焊性较差。螺栓是一种非常可行的替代解决方案，并且常用于修复旧金属桥。装配螺栓的解决方案成本高昂，另一种方法是使用树脂灌注式螺栓。带有预紧力的树脂灌注式老旧螺栓连接的受力性能已经用准静态和蠕变试验进行了研究，然而，关于这些连接节点的滑移和疲劳行为的文献很少。本文概述了几位研究者的实验项目，旨在评估单侧受剪和双侧受剪的树脂灌注式螺栓连接的疲劳行为。对有预紧力的标准螺栓和有预紧力的树脂灌注式螺栓的连接节点的实验数据进行比较分析，显示后者的疲劳强度较低。但欧洲规范3（EC3）对树脂灌注式螺栓和标准螺栓的连接节点提出的疲劳强度曲线大致相同，这应得到足够的重视。此外，本研究还展示了使用黏结螺栓连接的可行性研究。最后的研究是用高强度低合金结构钢板和用于金属黏结的丙烯酸结构黏结剂进行的。针对两个实际工程案例，使用线性化边界及Castillo 和Fernández-Canteli 模型对疲劳实验数据进行统计分析。最终提出疲劳设计曲线，并与欧洲和北美规范中的几个设计建议进行比较。

关键词： 疲劳     连接     结构加强     S-N曲线     树脂灌注式螺栓    

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标题 作者 时间 类型 操作

A reversibility-gain model for integer Karhunen-Loève transform design in video coding

Xing-guo ZHU,Lu YU

期刊论文

Probabilistic stability of uncertain composite plates and stochastic irregularity in their buckling mode shapes: A semi-analytical non-intrusive approach

期刊论文

Advancements in non-starch polysaccharides research for frozen foods and microencapsulation of probiotics

Martin LO,

期刊论文

Decomposition of perfluorooctanoic acid by microwave-activated persulfate: Effects of temperature, pH, and chloride ions

Yuchi LEE, Shanglien LO, Jeff KUO, Chinghong HSIEH

期刊论文

Robust public-private partnerships for joint railway and property development

LO, Yue HUAI

期刊论文

Quantifying and mapping spatial variability of Shanghai household carbon footprints

Shangguang YANG,Chunlan WANG,Kevin LO,Mark WANG,Lin LIU

期刊论文

Ambient air pollution and lung disease in China: health effects, study design approaches and future research

null

期刊论文

智慧社会与人工智能——用于智能维护的大数据调度和全球标准方法

Ruben Foresti, Stefano Rossi, Matteo Magnani, Corrado Guarino Lo Bianco, Nicola Delmonte

期刊论文

肝内区域免疫对肝移植后肿瘤复发的影响

刘江, 卢宠茂, 万钧

期刊论文

基于统计分析的树脂灌注式螺栓连接疲劳强度评价

aacute;sio, Grzegorz Stanisław Lesiuk, Carlos Alberto da Silva Rebelo, Rui Artur Bartólo

期刊论文