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 15

年份

2023 1

2021 1

2020 2

2018 2

2017 2

2016 1

2015 1

2012 1

2011 1

2010 1

2007 1

2004 1

展开︾

关键词

事故预防 1

公理 1

制药产业 1

发展战略 1

基础概念 1

学科内涵 1

安全科学技术 1

普光气田 1

服务体系 1

滤波天线；双频；天线阵列 1

热管理 1

煤炭；科学开采；技术变革；战略路线 1

监管 1

研究对象 1

空间信道模型；空口测试；无线线缆；多探头电波暗室；FR2验证 1

药品 1

设计理念 1

集输系统 1

飞行器 1

展开︾

检索范围：

排序：展示方式：

FOOD SYSTEMS TRANSFORMATION: CONCEPTS, MECHANISMS AND PRACTICES

《农业科学与工程前沿（英文）》 2023年第10卷第1期页码 1-3 doi: 10.15302/J-FASE-2023491

摘要： FOOD SYSTEMS TRANSFORMATION: CONCEPTS, MECHANISMS AND PRACTICES

关键词： TRANSFORMATION SYSTEMS FOOD CONCEPTS MECHANISMS

HTML PDF 收藏

Protecting traditional knowledge of Chinese medicine: concepts and proposals

Changhua Liu, Man Gu

《医学前沿（英文）》 2011年第5卷第2期页码 212-218 doi: 10.1007/s11684-011-0142-x

摘要： With the development of the knowledge economy, knowledge has become one of the most important resources for social progress and economic development. Some countries have proposed measures for the protection of their own traditional knowledge. Traditional Chinese medicine belongs to the category of intangible cultural heritage because it is an important part of Chinese cultural heritage. Today the value of traditional knowledge of Chinese medicine has been widely recognized by the domestic and international public. This paper discusses the definition of traditional knowledge of Chinese medicine and its protection, and evaluates research on its classification. We review the present status of the protection of traditional knowledge of Chinese medicine and tentatively put forward some possible ideas and methods for the protection of traditional knowledge of Chinese medicine. Our goal is to find a way to strengthen the vitality of traditional Chinese medicine and consolidate its foundation. We believe that if we could establish a suitable ( is a Latin term meaning “of its own kind” and is often used in discussions about protecting the rights of indigenous peoples. Here we use it to emphasize the fact that protection of traditional knowledge of Chinese medicine cannot be achieved through existing legal means of protection alone due to its unique characteristics) system for traditional knowledge, a more favorable environment for the preservation and development of traditional Chinese medicine will ultimately be created.

关键词： protection of traditional knowledge traditional Chinese medicine intellectual property sui generis system

HTML PDF 收藏

Human-cyber-physical systems: concepts, challenges, and research opportunities

Zhiming Liu, Ji Wang,zhimingliu88@swu.edu.cn,jiwang@ios.ac.cn

《信息与电子工程前沿（英文）》 2020年第21卷第11期页码 1535-1670 doi: 10.1631/FITEE.2000537

摘要： In this perspective article, we first recall the historic background of human-cyber-physical systems (HCPSs), and then introduce and clarify important concepts. We discuss the key challenges in establishing the scientific foundation from a system engineering point of view, including (1) complex heterogeneity, (2) lack of appropriate , (3) dynamic black-box integration of heterogeneous systems, (4) complex requirements for functionalities, performance, and quality of services, and (5) design, implementation, and maintenance of HCPS to meet requirements. Then we propose four research directions to tackle the challenges, including (1) and computational theory of HCPS, (2) theories and methods of HCPS , (3) specification and verification of model properties, and (4) software-defined HCPS. The article also serves as the editorial of this special section on cyber-physical systems and summarises the four articles included in this special section.

HTML PDF 收藏

Ecological conservation, remediation and construction for building an ecological civilization in China: concepts

Guofang SHEN

《农业科学与工程前沿（英文）》 2017年第4卷第4期页码 376-379 doi: 10.15302/J-FASE-2017186

摘要： This paper explains and discusses the concepts of ecological conservation and construction in China in three parts. The first part provides a brief description of the historical background of ecological activities in China and their major achievements in the past. The second part is a comprehensive review of various types of ecological control activity aimed at the improvement of natural and artificially established ecosystems at the landscape, regional (watershed) and higher levels. The scope of and differences between some ecological terms used in China such as ecological protection, conservation, remediation (rehabilitation), restoration as well as the reestablishment of new ecosystems are elaborated. The review suggests that the term “ecological conservation and construction” should be used to embrace all types of ecological control activity in China. Finally, five guidelines are proposed for promoting the implementation of ecological conservation and construction in China based on the two important governmental documents related to the development of ecological civilization in China.

关键词： ecological conservation development construction ” description important governmental

HTML PDF 收藏

The origins of schedule management: the concepts used in planning, allocating, visualizing and managing

Lynda M. BOURNE, Patrick WEAVER

《工程管理前沿（英文）》 2018年第5卷第2期页码 150-166 doi: 10.15302/J-FEM-2018012

摘要： Getting the in the at the has always been a major organizational challenge. In ancient times this process seems to have been accomplished based on the scheme of arrangements being contained in the leader’s mind and instructions communicated verbally. Modern approaches to solving the twin challenges of first thinking through the ‘plan’ and then communicating the plan to the people who need to do ‘ ’ use sophisticated graphics, charts, diagrams, and computations. This paper traces the development of the concepts most project managers take for granted including bar charts and critical path schedules from their origins (which are far earlier than most people think) through to the modern day. The first section of the paper looks at the development of concepts that allow the visualization of time and other data. The second looks at the shift from static representations to dynamic modeling through the emergence of computers, dynamic calculations and integrated data from the 1950s to the present time.

关键词： time management scheduling CPM PERT Gantt Critical Path bar chart

HTML PDF 收藏

Design concepts of an aircraft wing: composite and morphing airfoil with auxetic structures

P R BUDARAPU,Sudhir Sastry Y B,R NATARAJAN

《结构与土木工程前沿（英文）》 2016年第10卷第4期页码 394-408 doi: 10.1007/s11709-016-0352-z

摘要： This paper is categorized into two parts. (1) A frame work to design the aircraft wing structure and (2) analysis of a morphing airfoil with auxetic structure. The developed design frame work in the first part is used to arrive at the sizes of the various components of an aircraft wing structure. The strength based design is adopted, where the design loads are extracted from the aerodynamic loads. The aerodynamic loads acting on a wing structure are converted to equivalent distributed loads, which are further converted point loads to arrive at the shear forces, bending and twisting moments along the wing span. Based on the estimated shear forces, bending and twisting moments, the strength based design is employed to estimate the sizes of various sections of a composite wing structure. A three dimensional numerical model of the composite wing structure has been developed and analyzed for the extreme load conditions. Glass fiber reinforced plastic material is used in the numerical analysis. The estimated natural frequencies are observed to be in the acceptable limits. Furthermore, the discussed design principles in the first part are extended to the design of a morphing airfoil with auxetic structure. The advantages of the morphing airfoil with auxetic structure are (i) larger displacement with limited straining of the components and (ii) unique deformation characteristics, which produce a theoretical in-plane Poisson’s ratio of −1. Aluminum Alloy AL6061-T651 is considered in the design of all the structural elements. The compliance characteristics of the airfoil are investigated through a numerical model. The numerical results are observed to be in close agreement with the experimental results in the literature.

关键词： wing design aerodynamic loads morphing airfoil auxetic structures negative Poisson’s ratio

HTML PDF 收藏

Redox flow batteries—Concepts and chemistries for cost-effective energy storage

Matthäa Verena HOLLAND-CUNZ, Faye CORDING, Jochen FRIEDL, Ulrich STIMMING

《能源前沿（英文）》 2018年第12卷第2期页码 198-224 doi: 10.1007/s11708-018-0552-4

摘要： Electrochemical energy storage is one of the few options to store the energy from intermittent renewable energy sources like wind and solar. Redox flow batteries (RFBs) are such an energy storage system, which has favorable features over other battery technologies, e.g. solid state batteries, due to their inherent safety and the independent scaling of energy and power content. However, because of their low energy-density, low power-density, and the cost of components such as redox species and membranes, commercialised RFB systems like the all-vanadium chemistry cannot make full use of the inherent advantages over other systems. In principle, there are three pathways to improve RFBs and to make them viable for large scale application: First, to employ electrolytes with higher energy density. This goal can be achieved by increasing the concentration of redox species, employing redox species that store more than one electron or by increasing the cell voltage. Second, to enhance the power output of the battery cells by using high kinetic redox species, increasing the cell voltage, implementing novel cell designs or membranes with lower resistance. The first two means reduce the electrode surface area needed to supply a certain power output, thereby bringing down costs for expensive components such as membranes. Third, to reduce the costs of single or multiple components such as redox species or membranes. To achieve these objectives it is necessary to develop new battery chemistries and cell configurations. In this review, a comparison of promising cell chemistries is focused on, be they all-liquid, slurries or hybrids combining liquid, gas and solid phases. The aim is to elucidate which redox-system is most favorable in terms of energy-density, power-density and capital cost. Besides, the choice of solvent and the selection of an inorganic or organic redox couples with the entailing consequences are discussed.

关键词： electrochemical energy storage redox flow battery vanadium

HTML PDF 收藏

Concepts and implementation of strain-based criteria in design codes for steel structures

Reidar BJORHOVDE

《结构与土木工程前沿（英文）》 2012年第6卷第3期页码 210-216 doi: 10.1007/s11709-012-0165-7

摘要： A uniaxial tension test is commonly used to determine the mechanical properties of steel, but it has no meaning for the response of the material in a structure. The test was developed as a consensus solution by producers, fabricators, designers and code writers, to have a standard by which similar materials could be compared to a common base. It does not represent the actual behavior of the steel in a structure, and was never intended to do so. To study the true behavior of the structure and how the material responds it would be better to determine the strains and deformations that will take place during actual service condition. Such characteristics reflect the real behavior, whether in the elastic or inelastic range. If stresses or forces are needed, these are easily determined by the value of the strain and the relevant material modulus, along with the type of cross section, whether elastic or inelastic. The paper addresses the properties of a range of structural steels, how these are incorporated into design standards and how the standards define deformation characteristics and demands for bolted and welded connections.

关键词： steel stress-strain characteristics tension test strain design actual behavior improved design codes

HTML PDF 收藏

滤波天线：从创新概念到工业应用 Review Articles

Yun-fei CAO, Yao ZHANG, Xiu-yin ZHANG

《信息与电子工程前沿（英文）》 2020年第21卷第1期页码 116-127 doi: 10.1631/FITEE.1900474

摘要：滤波天线兼具滤波和辐射功能，可用于减少不同频带、距离较近的天线单元间的异频耦合。本文回顾论文作者提出的几款滤波天线和3个相关的双频基站天线阵列作为应用示例。滤波天线设计包括单极化和双极化滤波贴片天线、单极化全向滤波偶极子天线及用于基站的双极化滤波偶极子天线。不同于其他天线，本文中的滤波天线是具有消除多余滤波电路的创新概念。对于每种设计，滤波结构都与辐射体或馈电线良好集成。故提出的设计具有尺寸紧凑、结构简单、带内辐射性能良好、损耗低的优点，且不包含复杂滤波电路。基于提出的滤波天线，已开发出单极化和双极化双频天线阵列。利用滤波天线自身的频率选择功能，可有效降低不同频段天线单元间的异频互耦。相比于典型工业产品，双频阵列性能更佳。一些提出的技术已实现产业化应用。

关键词：滤波天线；双频；天线阵列

HTML PDF 收藏

高超声速飞行器综合热管理系统方案探讨

王佩广,刘永绩,王浚

《中国工程科学》 2007年第9卷第2期页码 38-48

摘要：

高超声速飞行器是当今世界航空航天领域研究的热点，由于其在飞行中遭受的热环境极其严酷，因而可靠的综合热管理系统是安全飞行的保证。针对不同飞行任务的高超声速飞行器，分别提出了综合热管理系统方案；对飞行时间短，飞行速度和高度变化快的飞行器，提出了以液氢燃料为主要热沉、相变蓄热材料为辅助热沉的热管理方案；对飞行时间长，飞行马赫数高的飞行器，提出了以吸热型碳氢燃料为热沉的热管理方案；分别探讨了两套方案涉及的关键技术，指出了未来研究工作的方向。

关键词：高超声速飞行器热管理

HTML PDF 收藏

普光气田集输系统安全设计理念与认识

李时杰,范承武,聂仕荣

《中国工程科学》 2010年第12卷第10期页码 65-69

摘要：

实践证明，普光集输设计具有创新性，工艺路线、总体布局、安全设计、应急防范与救援支持系统先进、合理、可行，特别是控制与安全仪表系统的设计与配置运行率高，总体是可控、有效的。安全设计理念在以下6个关键问题上得到有效实施：先进的集输工艺；合理的材料设备选择；完备的自控与监测技术；应急反应预案与紧急疏散广播；腐蚀控制与监测技术；智能清管技术与普通清管操作。普光集输设计项目实现了国内一流、国际领先的目标，可为国内其他同类项目提供借鉴。

关键词：普光气田集输系统设计理念

HTML PDF 收藏

论安全科学技术学科体系的结构和内涵

傅贵,张江石,许素睿

《中国工程科学》 2004年第6卷第8期页码 12-16

摘要：

安全科学技术学科作为《学科分类与代码》的一个一级学科，有明确的研究对象——事故，其研究目的是事故预防和控制事故损失。该学科以事故的发生发展规律为基础科学，它与不同的研究手段和工具交叉形成了该学科的应用科学体系。根据研究范围的不同，安全学科在不同的领域又形成了一个分支学科体系，但研究方法和工具仍然是相同的。就作者的鉴别能力和学科发展现状来说，安全科学技术学科的结构由至少6个基础概念、3条公理组成，学科的科学结构基本完整。

关键词：安全科学技术学科内涵研究对象事故预防基础概念公理

HTML PDF 收藏

煤炭科学开采新理念与技术变革研究

谢和平,王金华,姜鹏飞,刘见中,吴刚,周宏伟,任怀伟

《中国工程科学》 2015年第17卷第9期页码 36-41

摘要：

煤炭产业作为我国重要的传统能源支柱产业，在经济发展新常态下也必将发生重大变化，以智能、安全、绿色为特征的科学开采成为趋势。本文基于煤炭科学开采新理念，提出了煤炭技术变革战略路线，论述了2016—2030年不同阶段、不同层次的煤炭变革技术，包括升级与换代技术、拓展与变革技术、引领与探索技术，提出了不同阶段需要重点研发的理论与技术。

关键词：煤炭；科学开采；技术变革；战略路线

HTML PDF 收藏

用于毫米波性能空口测试的空间衰落信道重现技术：概念和实验验证

范伟1,Lassi HENTILÄ2,Pekka KYÖSTI2,3

《信息与电子工程前沿（英文）》 2021年第22卷第4期页码 548-559 doi: 10.1631/FITEE.2000484

摘要：拥有大量可用频谱资源的毫米波（mmWave）频段使得毫米波通信被视为第五代（5G）蜂窝系统的关键使能技术。为使毫米波新无线电（NR）成为现实，工业界和学术界做出了巨大努力。毫米波NR的性能评估和测试是确保毫米波5G NR部署成功的关键和必不可少的步骤。极具吸引力和应用前景的毫米波空口（OTA）辐射测试方法是在实验室条件下模拟实际的传播条件对毫米波设备进行虚拟现场测试。本文首先讨论了在衰落信道条件下毫米波5G NR空口测量的需求和挑战。之后，详细介绍了两种有前景的候选测试解决方案，即无线线缆和多探头电波暗室（MPAC），其中包括这两种方案的原理、对毫米波NR的适用性以及主要挑战。最后展示了这两种测试方案在28 GHz频段下初步的实验验证结果。

关键词：空间信道模型；空口测试；无线线缆；多探头电波暗室；FR2验证

HTML PDF 收藏

新型国家药品服务体系建设的构想

王健,袁春平,王浩,张志荣,张强,陈桂良,刘昌孝,侯惠民,杨胜利

《中国工程科学》 2017年第19卷第2期页码 62-67 doi: 10.15302/J-SSCAE-2017.02.010

摘要：

我国现有药品服务体系可初步满足医疗卫生的基本需求，但在研发、生产、销售及使用的各领域中均存在一些突出问题。本研究通过文献检索、数据查询、专家咨询及专题讨论，对我国药品服务体系的现状进行调研，找准存在的问题，并提出建设新型国家药品服务体系的构想，旨在为我国人民提供质量优良、疗效可靠、价格合理、使用方便的药品，保障临床用药的有效性、安全性、可及性及合理性；同时，促进制药产业结构转型发展，推动我国从制药大国向制药强国的转变。

关键词：药品服务体系制药产业监管发展战略