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High-end equipment customer requirement analysis based on opinion extraction

Yuejin TAN, Yuren WANG, Xin LU, Mengsi CAI, Bingfeng GE

《工程管理前沿（英文）》 2018年第5卷第4期页码 479-486 doi: 10.15302/J-FEM-2018035

摘要： Acquisition and analysis of customer requirements are the essential steps in high-end equipment design. Considering that Internet and big data technologies are integrated into the manufacturing industry, we propose a method of analyzing customer requirements based on open-source data. First, online data are collected with focused crawlers and preprocessed to filter noise and duplicate. Then, user opinions are extracted based on the defined template, and users’ sentiments are analyzed. Based on the relationship between user sentiments and attribute parameters, the parameter range that satisfies customers can be obtained. The proposed method is evaluated by using an example of new energy vehicle to verify its availability and feasibility.

关键词： requirement analysis opinion extraction high-end equipment new energy vehicle

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Explicit finite element method for calculation and analysis to the elasto-plastic dynamic response of

LI Liang, DU Xiuli, LI Liyun, ZHAO Chenggang

《结构与土木工程前沿（英文）》 2007年第1卷第4期页码 436-442 doi: 10.1007/s11709-007-0059-2

摘要： In order to describe the elasto-plastic dynamic response of fluid-saturated porous media, the incremental elasto-plastic wave propagation equations of fluid-saturated porous media are developed by the fundamental theory of continuum mechanics and appointing to the characteristic of fluid-saturated porous media. Then, the space discretization of these equations is performed to get their Galerkin formula. At last, the time discretization of this formula is carried out with the integral method which consists of central difference method and Newmark constant average acceleration method to get the explicit time integral formula for solving the wave propagation equations of porous media. On the basis of the integral formula mentioned above, the time-domain explicit finite element method is developed for calculation and analysis of the elasto-plastic dynamic response of fluid-saturated porous media. In this method, the decoupling technique is adopted and it does not need to solve simultaneous linear equations in each time step, so the computational effort and memory requirement can be reduced considerably by using this method.

关键词： discretization computational calculation integral requirement

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Limit of axial force ratio and requirement for stirrups of RC columns with special shape

WANG Yiqun, XU Yidong, ZHAO Yanjing, CHEN Yunxia

《结构与土木工程前沿（英文）》 2007年第1卷第2期页码 176-181 doi: 10.1007/s11709-007-0019-x

摘要： Thousands of columns with special shape are analyzed by nonlinear numerical methods. The ductility is calculated to investigate the limit of the axial force ratio and circumstantial requirement for stirrups of an reinforced concrete (RC) column with special shape, in the point of view of the characteristic value for providing stirrup. The limit of the axial force ratio of columns with special shape in relation to the characteristic value of the stirrup is obtained. Then, the effect of stirrup arrangement on the ductility of the RC column is discussed in case of buckling of the longitudinal reinforcement and constraint concrete columns. The complete requirement for stirrups of RC column with special shape is given.

关键词： reinforced concrete circumstantial requirement buckling stirrup longitudinal reinforcement

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Cream coated on endotracheal tube with or without epidural lidocaine reduces isoflurane requirement during

null

《医学前沿（英文）》 2012年第6卷第3期页码 302-306 doi: 10.1007/s11684-012-0194-6

摘要：

This study was designed to evaluate the effect of tracheal topical anesthesia using EMLA^? Cream (EC) coated on the endotracheal tube (ETT) with or without epidural anesthesia (EA) on isoflurane requirement during general anesthesia (GA) and investigate whether EC coated on the ETT with EA was associated with the additive effect compared with the effect when each anesthetic was administered independently. The prospective randomized, double-blinded, and controlled study included 60 ASA I–II patients scheduled for upper abdominal surgery requiring GA. Patients were randomly assigned to one of the following groups: group 1 received GA, group 2 received EC+ GA, group 3 received GA+ EA, and group 4 received EC+ GA+ EA. Isoflurane was administered at the required concentrations to maintain the mean arterial pressure at a level not exceeding 20% of preoperative values. The percentage mean expired concentration (%MEC) was used in calculating the isoflurane requirement. Emergence agitation, postoperative sore throat, and hoarseness were recorded. Groups 2, 3, and 4 exhibited a significant reduction on isoflurane requirement compared with group 1 (P<0.05). The isoflurane requirement evaluated by %MEC decreased by 12%, 38%, and 50% in groups 2, 3, and 4, respectively. The incidence of emergence agitation was significantly lower in groups 2 and 4 than those in groups 1 and 3 (P<0.05). Tracheal topical anesthesia using EC coated on ETT with or without EA reduced the isoflurane requirement during GA, indicating that EC combined with EA exhibited an additive effect on the requirement of general anesthetic.

关键词： EMLA? Cream epidural anesthesia general anesthesia isoflurane lidocaine

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Evaluation of stray current corrosion resistance of concrete in metro construction

YANG Shucai, YANG Xu

《结构与土木工程前沿（英文）》 2008年第2卷第3期页码 246-252 doi: 10.1007/s11709-008-0036-4

摘要： By simulation tests of concrete specimens in saturated Ca(OH) solution and seawater, and based on micro mechanism analysis, this paper evaluates the stray current corrosion resistance of concrete specimens of different mixture ratios, and reaches a conclusion that the capability to resist stray current corrosion of optimally designed concrete mixed with good-quality fly ash and powdered slag is increased by over 5 times more than the reference concrete with the same water to binder ratio, and the service life of such kind of concrete meets the basic requirement of a metro project.

关键词： project different requirement simulation capability

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Resilience strategies for sustainable supply chains under budget constraints in the post COVID-19 era

《工程管理前沿（英文）》页码 143-157 doi: 10.1007/s42524-022-0236-y

摘要： The COVID-19 outbreak has caused uncertainty risk surges, increased sustainable supply chain vulnerabilities, and challenges to sustainable supply chain resilience (SSCR) management. Therefore, improving SSCR is necessary to alleviate vulnerabilities, and SSCR management must generate large capital investments. However, the economic downturn brought about by the COVID-19 epidemic has made some companies have limited budgets that can be used to improve SSCR. Therefore, the design of resilience solutions needs to fully consider the constraints of budgetary costs. Most of the existing related literature only discusses optimal resilience solutions under certain cost constraints, so such resilience solutions cannot be applied to most enterprises. In this study, we set the cost constraint as a variable quantity, using resilience efficiency and customer satisfaction as indicators, to determine the changing laws of optimal resilience strategies when cost constraints change. These rules can be applied to enterprises with different budgeted costs. Our findings suggest that companies should prioritize sacrificing resilience measures (RMs) related to adaptive capacity when budget costs gradually decline, and RMs related to absorptive capacity are indispensable at all budget levels. Furthermore, the pursuit of environmental and social sustainability cannot be abandoned, no matter how limited the flexible budget may be.

关键词： sustainable supply chain customer requirement resilience efficiency customer satisfaction budget constraint

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Lightening structure optimization on turbine wheel of vehicular turbocharger

ZHAO Junsheng, MA Chaochen, HU Liaoping

《能源前沿（英文）》 2008年第2卷第4期页码 422-426 doi: 10.1007/s11708-008-0098-y

摘要： Based on basic principle of optimization design, structure optimization of turbine is conducted using optimization module of ANSYS and APDL in order to get the minimum turbine weight. Meanwhile, the original blade profile and flow passage are maintained, and the structural strength of the turbine are guaranteed. Considering assembly technique and cast requirement, the structure of the modified turbine is determined which can save 6.91 percent of the material compared with the original one. The modified turbine not only saved material, but also gained better effect of mass distribution between the turbine and the compressor impeller. The result can provide useful reference to engineering application of turbocharger.

关键词： requirement technique engineering application turbocharger reference

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面向高端装备制造业的高端制造装备需求趋势分析

张俊,卢秉恒

《中国工程科学》 2017年第19卷第3期页码 136-141 doi: 10.15302/J-SSCAE-2017.03.019

摘要：

高端制造装备是高端装备制造业快速发展的基础，本文针对航空装备、航天装备、轨道交通装备、海洋工程装备、智能制造装备等高端装备制造业的“十三五”发展趋势，分析了各领域对高端机床和高端基础制造装备提出的新需求和未来的发展重点，并结合我国制造装备行业的现状，提出了几点建议，以促进我国高端装备制造业的良性发展。

关键词：高端装备制造业高端制造装备机床基础制造装备

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支撑强国目标的中国工程科技发展战略路径谋划

“中国工程科技2035发展战略研究”总体项目组

《中国工程科学》 2017年第19卷第1期页码 27-33 doi: 10.15302/J-SSCAE-2017.01.005

摘要：

工程科技是与生产力结合最为紧密的科学技术，是实现强国目标的直接推动力。工程科技中长期发展战略研究的任务是面向“两个一百年”的强国目标，结合我国国情和发展需求，开展工程科技发展路径设计。本文探讨了我国经济社会发展与科技强国建设对工程科技创新的要求，介绍了将需求牵引与技术推动相结合开展工程科技中长期发展战略研究和路径谋划的方法体系，在愿景分析基础上，提出了面向2035年中国工程科技发展的总体思路和战略构想。

关键词： 2035年中国工程科技发展战略构想路径规划战略研究方法技术预见需求分析

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Aerodynamic challenges in span length of suspension bridges

XIANG Haifan, GE Yaojun

《结构与土木工程前沿（英文）》 2007年第1卷第2期页码 153-162 doi: 10.1007/s11709-007-0016-0

摘要： The potential requirement of extreme bridge spans is firstly discussed according to horizontal clearances for navigation and economical construction of deep-water foundation. To ensure the technological feasibility of suspension bridges with longer spans, the static estimation of feasible span length is then made based on current material strength and weight of cables and deck. After the performances of the countermeasures for raising the aerodynamic stability are reviewed, a trial design of a 5 000 m suspension bridge, which is estimated as a reasonable limitation of span length, is finally conducted to respond to the tomorrow s challenge in span length of suspension bridges with the particular aspects, including dynamic stiffness, aerodynamic flutter and aerostatic stability.

关键词： requirement reasonable limitation challenge particular economical construction

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物联网隐私与安全联合参考架构 Position Paper

Musab KAMAL1, Imran RASHID1, Waseem IQBAL1, Muhammad Haroon SIDDIQUI1, Sohaib KHAN1, Ijaz AHMAD2

《信息与电子工程前沿（英文）》 2023年第24卷第4期页码 481-508 doi: 10.1631/FITEE.2200368

摘要：各种物体正以惊人速度连接到互联网，使物联网概念成为现实。物联网生态系统正以智能家居、医疗保健系统、可穿戴设备、联网车辆和多种产业形式普及，由此增加了与系统隐私和安全相关的风险。架构缺陷带来的物联网设备安全问题和网络攻击可能阻碍物联网产品的发展。解决这些问题，需在物联网构建块中设置隐私和安全权限。多年来，物联网架构不断演变，通过可测量性、管理、互操作性和可扩展性等新方案改进了架构。为此，亟需结合隐私和安全考量，对物联网参考架构进行标准化和有效管理。本文检查了12个现有物联网参考架构，对照标准中的要求，分析各自不足之处。基于此，提出一种新的架构，即结合隐私的物联网安全参考架构（PF-IoT-SRA），其诠释了物联网通信环境中所有隐私指标，可以对抗主要威胁和攻击。这是朝着领域架构标准化迈出的一步。我们使用架构权衡分析法（ATAM）——一种行业认可的基于场景的方法——验证了所提参考架构的有效性。

关键词：架构上重要的需求（ASR）；架构权衡分析法（ATAM）；互联网架构板；物联网；隐私增强技术；隐私验证链

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Coordinate system applied to magnetic suspension project between Shanghai and Hangzhou

SHI Yimin, WANG Lihua, LUO Yan

《结构与土木工程前沿（英文）》 2008年第2卷第3期页码 288-292 doi: 10.1007/s11709-008-0041-7

摘要： In order to satisfy the requirement for route location of a magnetic suspension project between Shanghai and Hangzhou, this paper proposes to adopt a new form of geodetic coordinate system, which is defined by meridians and parallel circles but with two coordinate parameters expressed by length. Not only the coordinate systems for route location along the whole line can be unified, but also the precision of lengths and angles obtained from simple formulas are very high and there are not any map projection distortions. This has been proven by calculation.

关键词： requirement projection calculation Shanghai precision

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工程管理信息化规划与实施

孙凯,刘人怀

《中国工程科学》 2014年第16卷第10期页码 10-14

摘要：

在工程全生命周期中，工程管理信息化规划与实施过程涉及组织的战略管理和项目管理两个层面，匹配问题是工程管理信息化过程中的核心问题之一。在战略管理层面，首先要充分明晰工程的信息处理需求，进而根据需求确立信息系统规划的目标；在项目管理层面，工程信息处理能力的形成不是工程参与各方能力的简单叠加，而是其能力相互匹配的结果，匹配程度的高低决定了工程的整体信息处理能力的高低。更进一步，工程信息处理能力与工程信息处理需求的匹配程度决定了工程管理信息化水平的高低，同时也会对工程的整体绩效水平产生影响。

关键词：工程管理信息化匹配信息处理需求信息处理能力

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论我国饲料工业的标准化工作及其产品的质量管理

张子仪

《中国工程科学》 2001年第3卷第7期页码 30-36

摘要：

上个世纪末，我国饲料工业总产量比改革开放前增长了近70倍。1999年全国配合饲料合格率也从20世纪80年代的40%～60%提高到95.7%，这是一个巨大的成就。但目前饲料工业标准化工作则相对滞后。入世以后，我国饲料工业标准化体系将面临着与国际质量管理和质量保证标准的接轨以及与环境管理系列标准的配套问题。为此，在近期内应把握时机，及时作好我国饲料工业标准化工作水平的提高及更新换代。当前应重点抓紧饲料安全性标准的增删与修订。对饲料卫生标准、饲料原料标准、饲料质量监测技术及生物学效价评定等方面的标准必须全国统一；而对饲养标准则应因地制宜分类设置，根据具体情况可以跨省区设一类饲养标准，也可以在一个省或区设多种类型的饲养标准。

当前，饲料市场各个流通环节中的法制建设任务仍然十分艰巨。要坚决杜绝一切有损社会、生态效益的饲料添加剂进入市场；特别要严密监视国外活菌制剂类饲料及一切激素类饲料添加剂非法进入我国市场。要加强保护我国目前尚保留着的大面积净土；要为合法的、科学的饲料添加剂正名。这是争创“中国产绿色产品”品牌，提高我国饲料工业产品市场竞争能力的重要保证。

关键词：饲料工业标准化工作安全性国际环境管理系列标准饲养标准

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Behavior of dam concrete under biaxial compression-tension and triaxial compression-compression-tension stresses

WANG Huailiang, SONG Yupu

《结构与土木工程前沿（英文）》 2008年第2卷第4期页码 323-328 doi: 10.1007/s11709-008-0043-5

摘要： In order to meet the requirement for nonlinear analysis and design of mass concrete structures, the deformation behavior and strength of three-graded concrete specimens 250 mm × 250 mm × 400 mm with a maximum aggregate size of 80 mm and the corresponding wet-screened concrete specimens 150 mm × 150 mm × 300 mm with a maximum aggregate size of 40 mm were studied experimentally. Specimens subjected to biaxial compression-tension (C-T) and triaxial compression-compression-tension (C-C-T) stress states. Test data indicate that both the deformation and strength of the mass concrete specimens are lower than those of the corresponding wet-screened concrete small specimens, but the initial tangent modulus of the stress-strain curve of the former is greater than that of the latter. Test results show that the wet-screened effect and size effect of the specimens under complex stress states are obvious such that these should be considered in the design of mass concrete structures. In addition, respective failure criteria for mass concrete in principal stress space and octahedron stress space are proposed.

关键词： requirement wet-screened concrete compression-tension maximum aggregate principal