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三维体目标间拓扑方向关系描述和推理

刘新,李成名,刘文宝

《中国工程科学》 2013年第15卷第5期页码 8-13

摘要：

空间关系描述了地理信息系统（GIS）中实体间的位置、距离、方位、拓扑等的度量。为提高空间关系描述的惟一性和空间关系推理的准确性，将拓扑关系与方向关系集成描述，构建拓扑方向关系的描述表达模型。目标对象与参照物在X、Y、Z 3个坐标轴上投影间的Allen区间关系分别为[R1]、[R2]和[R3]，提出利用Allen区间关系对[(R1,R2,R3)]描述三维拓扑方向区域，用定义法研究拓扑方向关系定性推理，通过一些典型例子说明拓扑方向关系推理过程和结果，推理结果用组合推理表表示。

关键词：空间关系拓扑关系方向关系拓扑方向关系三维空间

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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

摘要： Entity and relation extraction is an indispensable part of domain knowledge graph construction, which can serve relevant knowledge needs in a specific domain, such as providing support for product research, sales, risk control, and domain hotspot analysis. The existing entity and relation extraction methods that depend on pretrained models have shown promising performance on open datasets. However, the performance of these methods degrades when they face domain-specific datasets. Entity extraction models treat characters as basic semantic units while ignoring known character dependency in specific domains. Relation extraction is based on the hypothesis that the relations hidden in sentences are unified, thereby neglecting that relations may be diverse in different entity tuples. To address the problems above, this paper first introduced prior knowledge composed of domain dictionaries to enhance characters’ dependence. Second, domain rules were built to eliminate noise in entity relations and promote potential entity relation extraction. Finally, experiments were designed to verify the effectiveness of our proposed methods. Experimental results on two domains, including laser industry and unmanned ship, showed the superiority of our methods. The F1 value on laser industry entity, unmanned ship entity, laser industry relation, and unmanned ship relation datasets is improved by +1%, +6%, +2%, and +1%, respectively. In addition, the extraction accuracy of entity relation triplet reaches 83% and 76% on laser industry entity pair and unmanned ship entity pair datasets, respectively.

关键词： entity extraction relation extraction prior knowledge domain rule

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Macrozoobenthic assemblages in relation to environments of the Yangtze-isolated lakes

Baozhu PAN, Haijun WANG, Hongzhu WANG, Zhaoyin WANG

《环境科学与工程前沿（英文）》 2012年第6卷第2期页码 246-254 doi: 10.1007/s11783-011-0381-8

摘要： Eutrophication can shift lakes from a clear, macrophyte-dominated state to a turbid, algae-dominated state, and different habitat condition supports different fauna. Macrozoobenthos are good indicators of water environment, and studies on macrozoobenthic assemblage characteristics can help us to know which state a lake is in, thus provide the basis for its eutrophication control. In this study, a systematic investigation on macrozoobenthos was conducted in 17 Yangtze-isolated lakes to explore the macroecological laws of macrozoobenthic assemblages. Detrended correspondence analysis (DCA) revealed that variance of benthic assemblage structure occurred in two types of lakes. In macrophytic lakes, altogether 51?taxa of macrozoobenthos were identified. The average density and biomass of total macrozoobenthos were 2231?individuals·m and 1.69 g dry weight·m , respectively. Macrozoobenthic assemblage was characterized by dominance of scrapers (i.e. gastropods). In algal lakes, altogether 20 taxa of macrozoobenthos were identified. The average density and biomass of total macrozoobenthos were 2814 individuals·m and 1.38 g dry weight·m , respectively. Macrozoobenthic assemblage was characterized by dominance of collector-gatherers (i.e. oligochaetes). Wet biomass of submersed macrophytes ( ) and phytoplankton chlorophyll concentration ( ) were demonstrated as the key factor structuring macrozoobenthic assemblages in macrophytic and algal lakes, respectively.

关键词： macrozoobenthos assemblage characteristics environment analyses macrophytic lake algal lake

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A multi-sensor relation model for recognizing and localizing faults of machines based on network analysis

《机械工程前沿（英文）》 2023年第18卷第2期 doi: 10.1007/s11465-022-0736-9

摘要： Recently, advanced sensing techniques ensure a large number of multivariate sensing data for intelligent fault diagnosis of machines. Given the advantage of obtaining accurate diagnosis results, multi-sensor fusion has long been studied in the fault diagnosis field. However, existing studies suffer from two weaknesses. First, the relations of multiple sensors are either neglected or calculated only to improve the diagnostic accuracy of fault types. Second, the localization for multi-source faults is seldom investigated, although locating the anomaly variable over multivariate sensing data for certain types of faults is desirable. This article attempts to overcome the above weaknesses by proposing a global method to recognize fault types and localize fault sources with the help of multi-sensor relations (MSRs). First, an MSR model is developed to learn MSRs automatically and further obtain fault recognition results. Second, centrality measures are employed to analyze the MSR graphs learned by the MSR model, and fault sources are therefore determined. The proposed method is demonstrated by experiments on an induction motor and a centrifugal pump. Results show the proposed method’s validity in diagnosing fault types and sources.

关键词： fault recognition fault localization multi-sensor relations network analysis graph neural network

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Soy food consumption in relation to breast cancer modified by menopause status

YANG Rong, ZHANG Bin, YANG Shaoping, ZHANG Dan, DU Yukai

《医学前沿（英文）》 2008年第2卷第4期页码 348-351 doi: 10.1007/s11684-008-0066-2

摘要： It has been found that lifestyle and diet are associated with the development of cancers. The mortality of breast cancer in Wuhan city is increasing, according to the statistics of recent years. This case control study was aimed to provide data for alimentary therapeutics for breast carcinomas. It included a case group ( = 196) and an age frequency-matched control group ( = 202). A validated food frequency questionnaire was used to obtain information on usual food consumption. The results indicate that intake of soy foods more than 5 times per week was associated with a decreased risk of breast cancer, especially in premenopausal women. The adjusted was 0.294 [95% CI was (0.158–0.546), = 0.000]. Our results indicate that alimentary therapeutics for breast cancer can be adjusted by status of menopause.

关键词： development control lifestyle consumption information

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Understanding barriers to BIM implementation: Their impact across organizational levels in relation to

Sander SIEBELINK, Hans VOORDIJK, Maaike ENDEDIJK, Arjen ADRIAANSE

《工程管理前沿（英文）》 2021年第8卷第2期页码 236-257 doi: 10.1007/s42524-019-0088-2

摘要： This multiple case study of a contracting firm contributes to understanding the barriers that organizations face during the implementation of building information modeling (BIM) by providing insights into the impact of these barriers across different organizational levels (i.e., from top management to project teams) and by relating these barriers to different degrees of BIM maturity. First, we observe the dominance of barriers related to the motivation, competence, and time capacity of people across all levels of an organization. Second, the cluster of barriers at the middle-management level highlights the important role of this level in reducing these barriers. Third, only those cases with a low level of BIM maturity have struggled with lack of top management support, thereby highlighting the importance of such support in achieving BIM maturity growth. High BIM maturity situations are more prone to externally oriented barriers in attempting to further leverage the benefits of BIM. Our study provides insights on where to focus BIM implementation measures and how to enhance organizational BIM maturity.

关键词： building information modeling implementation barriers maturity organizational levels

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The ITZ microstructure, thickness, porosity and its relation with compressive and flexural strength of

《结构与土木工程前沿（英文）》 2022年第16卷第2期页码 191-201 doi: 10.1007/s11709-021-0792-y

摘要： A new insight into the interfacial transition zone (ITZ) in cement mortar specimens (CMSs) that is influenced by cement fineness is reported. The importance of cement fineness in ITZ characterizations such as morphology and thickness is elucidated by backscattered electron images and by consequences to the compressive (F_c) and flexural strength (F_f), and porosity at various water/cement ratios. The findings indicate that by increasing the cement fineness the calcium silicate hydrate formation in the ITZ is favored and that this can refine the pore structures and create a denser and more homogeneous microstructure. By increasing cement fineness by about 25% of, the ITZ thickness of CMSs was reduced by about 30% and F_c was increased by 7%–52% and F_f by 19%–40%. These findings illustrate that the influence of ITZ features on the mechanical strength of CMSs is mostly related to the cement fineness and ITZ microstructure.

关键词： cement fineness interfacial transition zone compressive and flexural strength

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基于Voronoi区的GIS中方向关系的描述与计算

李成名

《中国工程科学》 2013年第15卷第5期页码 25-29

摘要：

方向关系在地理信息系统（GIS）中占据着十分重要的地位，由于它的模糊性和依赖空间实体形状的特性，使得它的形式化描述和判断比较困难。本文在三角形模型（CDR）方法的基础上，利用最小矩形（MBR）四边的Voronoi多边形及其边界，形式化描述了方向关系，进而将方向关系分为主方向关系和次方向关系，并分别给出了两者利用MBR四边Voronoi多边形及其边界判断的算法。

关键词：方向关系 Voronoi区 CDR MBR

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Correlation between tension softening relation and crack extension resistance in concrete

Xiufang ZHANG , Shilang XU ,

《结构与土木工程前沿（英文）》 2009年第3卷第3期页码 323-329 doi: 10.1007/s11709-009-0041-2

摘要： Changes of the material fracture energy consumption with crack propagation can be described by a crack extension resistance curve, one of the fundamental fracture criteria in crack mechanics. Recently, experimental observation of the fracture behavior in concrete was used to develop a new fracture criterion, the crack extension resistance curve, to analyze crack propagation during the entire concrete fracture process. The variation of the crack extension resistance is mainly associated with the energy consumption in the fracture process zone ahead of the stress-free crack tip. The crack extension resistance is then a function of the softening curve, which is a basic mechanical property in the fracture process zone. The relationship between the softening curve and the crack extension resistance curve is then analyzed based on results of three-point bending beams tests. The results indicate that the characteristic points of the crack extension resistance curve is closely related to the characteristic point on used tension softening curve.

关键词： concrete fracture process zone crack extension G_R resistance tension softening curve

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Coronary leukocyte activation in relation to progression of coronary artery disease

null

《医学前沿（英文）》 2016年第10卷第1期页码 85-90 doi: 10.1007/s11684-016-0435-1

摘要：

Leukocyte activation has been linked to atherogenesis, but there is little in vivo evidence for its role in the progression of atherosclerosis. We evaluated the predictive value for progression of coronary artery disease (CAD) of leukocyte activation markers in the coronary circulation. Monocyte and neutrophil CD11b, neutrophil CD66b expression and intracellular neutrophil myeloperoxidase (MPO) in the coronary arteries were determined by flow cytometry in patients undergoing coronary angiography. The primary outcome included fatal and nonfatal myocardial infarction or arterial vascular intervention due to unstable angina pectoris. In total 99 subjects who were included, 70 had CAD at inclusion (26 patients had single-vessel disease, 18 patients had two-vessel disease and 26 patients had three-vessel disease). The median follow-up duration was 2242 days (interquartile range: 2142–2358). During follow-up, 13 patients (13%) developed progression of CAD. Monocyte CD11b, neutrophil CD11b and CD66b expression and intracellular MPO measured in blood obtained from the coronary arteries were not associated with the progression of CAD. These data indicate that coronary monocyte CD11b, neutrophil CD11b and CD66b expression and intracellular MPO do not predict the risk of progression of CAD.

关键词： coronary artery disease inflammation integrin myeloperoxidase leukocyte activation

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继承泰勒级数的关系谱分析：手部肌肉协同与耦合 Research Article

刘刚,王晶

《信息与电子工程前沿（英文）》 2022年第23卷第1期页码 145-157 doi: 10.1631/FITEE.2000578

摘要：数学中有两种著名的函数分解方法：泰勒级数和傅里叶级数。傅里叶级数发展成为傅里叶频谱，用于信号分解和分析；而泰勒级数的求解需要已知具体函数表达式，所以其在工程领域很少被应用。本文使用树突网络发展了泰勒级数，构造了关系谱，并将其应用于模型或系统分解和分析。了解肌肉激活与手指运动之间的直观联系对于开发无需用户预训练的商业假肢至关重要。然而，由于人手的复杂性，该直观联系尚未被理解。本文使用关系谱分析了肌肉—手指系统。在手指运动中，一块肌肉同时驱动多个手指，多块肌肉同时驱动一个手指。因此，本研究聚焦于手部的肌肉协同与耦合。本文有两个主要贡献：（1）有关手部的发现有助于假肢手的设计；（2）关系谱使在线模型可读，从而统一了在线性能和离线结果。开源代码见https://github.com/liugang1234567/Gang-neuron。

关键词：泰勒级数；关系谱；树突网络；假肢手；机器学习；工程

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Alcohol and tea consumption in relation to the risk of nasopharyngeal carcinoma in Guangdong, China

Hong-Lian RUAN, Feng-Hua XU, Wen-Sheng LIU, Qi-Sheng FENG, Li-Zhen CHEN, Yi-Xin ZENG, Wei-Hua JIA,

《医学前沿（英文）》 2010年第4卷第4期页码 448-456 doi: 10.1007/s11684-010-0280-6

摘要： To investigate whether alcohol and tea consumption has an etiological association with nasopharyngeal carcinoma (NPC) in a high-incident population, a large scale case-control study was conducted. The study included 2846 individuals in Guangdong Province, China, with 1387 newly diagnosed cases of NPC and 1459 frequency-matched controls. Exposure histories of alcohol and tea consumption were obtained via personal interviews. Information regarding socio-demographic characteristics (age, sex, education, dialect and household type), family history of NPC, Epstein-Barr virus (EBV) infection, dietary habits and other potential confounding factors was also studied. An analysis was performed using unconditional logistic regression to calculate odds ratios (OR) and 95% confidence intervals (CI). The risk of NPC was found to be associated with habitual alcohol consumption and tea consumption. Tea consumption has been associated with a decreased occurrence of NPC (OR= 0.62), while consumption of alcohol was associated with a complex effect. Specifically, moderate consumption of alcohol was associated with decreased risk of NPC, while overuse, especially strong distillate spirits, appeared to be a risk factor.

关键词： nasopharyngeal carcinoma case-control study alcohol consumption tea consumption

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Study on shear resistance of aluminum alloy I-section members

DONG Zhen, ZHANG Qilin

《结构与土木工程前沿（英文）》 2008年第2卷第1期页码 79-86 doi: 10.1007/s11709-008-0007-9

摘要： The design method for the shear resistance of aluminum alloy I-section members is presented, taking into consideration of the post-buckling strength of webs and the restraint effect of flanges, and the practical design formulas are proposed. The deflection of aluminum alloy I-section members under concentrated load is simulated by using the finite element method, and several design theories are discussed. The relation of shear resistance to the maximum web displacement reflects that the web of aluminum alloy I-section member is under fewer shears buckling force, while the whole member has higher shear resistance. However, the traditional design method is not able to give the real shear resistance of aluminum alloy I-section members. The proposed design formulas for the shear resistance of aluminum alloy I-section members is used to calculate accurately the post-buckling resistance of webs and the shear resistance contribution of flanges. The results are in a great agreement with the test data of Hamoodi M J, Burt C A, Evans H R and the results from Eurocode9 formulas.

关键词： formulas displacement deflection relation I-section member

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基于协同学习的跨语言隐式篇章关系识别 None

Yao-jie LU, Mu XU, Chang-xing WU, De-yi XIONG, Hong-ji WANG, Jin-song SU

《信息与电子工程前沿（英文）》 2018年第19卷第5期页码 651-661 doi: 10.1631/FITEE.1601865

摘要：标注语料库的缺乏阻碍了中文隐式篇章关系识别研究的进展，而在其他语言（如英语）中存在一些可用的篇章关系语料库。提出一个跨语言的隐式篇章关系识别框架，该框架可利用英语语料库完成中文隐式篇章关系识别任务。使用机器翻译从带标签的英语篇章关系语料库生成中文实例。基于该方法，每个实例都有两个独立视角：中文和英文。然后，利用联合训练方式，分别基于中文和英文视角学习两个分类器，同时利用无标签中文数据帮助完成中文隐式篇章关系识别。实验结果证明该方法有效。

关键词：跨语言；隐式篇章关系；协同训练

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低碳建筑利益相关方动态关系分析

刘红勇,郑俊巍,林诚

《中国工程科学》 2012年第14卷第12期页码 94-99

摘要：

参考学术界对低碳建筑的定义，结合节能建筑以及对低碳建筑的认识，从狭义和广义两方面提出低碳建筑的定义，并从全寿命周期的角度，对各利益相关方：政府、开发商、设计单位、施工单位、材料设备供应单位、咨询机构、低碳技术研发机构、信贷机构、专业评估检测机构、物业管理单位以及公众，进行了系统的分析;提出了低碳建筑市场利益相关方关系图，同时将低碳建筑分为决策阶段、设计阶段、施工建造阶段、运营维护阶段与拆除报废阶段共计5个阶段;设计了各个阶段低碳建筑利益相关方因果关系图，对各利益相关方的动态关系做出了具体分析。

关键词：低碳建筑利益相关方因果关系图动态分析