Resource Type

Journal Article 980

Conference Videos 9

Year

2023 73

2022 80

2021 68

2020 70

2019 47

2018 42

2017 43

2016 41

2015 50

2014 44

2013 39

2012 42

2011 35

2010 47

2009 44

2008 36

2007 35

2006 26

2005 26

2004 22

open ︾

Keywords

model 15

model test 15

numerical simulation 15

mathematical model 14

kinetic model 10

COVID-19 7

uncertainty 7

Deep learning 6

optimization 6

sensitivity analysis 6

constitutive model 5

China 4

Machine learning 4

development model 4

numerical model 4

sustainable development 4

FEM 3

artificial neural network 3

dynamic model 3

open ︾

Search scope:

排序： Display mode:

Scavenging Microwave Wireless Power: A Unified Model, Rectenna Design Automation, and Cutting-Edge Techniques Review

Si-Ping Gao, Jun-Hui Ou, Xiuyin Zhang, Yongxin Guo

Engineering 2023, Volume 30, Issue 11,   Pages 32-48 doi: 10.1016/j.eng.2023.05.019

Abstract: A novel rectifier model capable of accurately modeling the rectification process under both high andThe model reveals the theoretical boundary of radio frequency-to-direct current (dc) power conversion

Keywords： Microwave wireless power transfer     Microwave wireless energy harvesting     Unified Rectifier model     Automated    

HTML PDF Collect

Unified description of sand behavior

Feng ZHANG, Bin YE, Guanlin YE

Frontiers of Structural and Civil Engineering 2011, Volume 5, Issue 2,   Pages 121-150 doi: 10.1007/s11709-011-0104-z

Abstract: paper, the mechanical behavior of sand, was systematically described and modeled with a elastoplastic modelIn the model, the results of conventional triaxial tests of the sand under different loading and drainageThe model only employs eight parameters among which five parameters are the same as those used in Cam-claymodel.The capability of the model is discussed in a theoretical way.

Keywords： constitutive model     sand     stress-induced anisotropy     density     structure    

HTML PDF Collect

Unified cycle model of a class of internal combustion engines and their optimum performance characteristics

Shiyan ZHENG

Frontiers in Energy 2011, Volume 5, Issue 4,   Pages 367-375 doi: 10.1007/s11708-011-0170-x

Abstract: The unified cycle model of a class of internal combustion engines is presented, in which the influenceThe results obtained from this unified cycle model are very general and useful, from which the optimal

Keywords： internal combustion engine     irreversibility     power output     efficiency     optimization    

HTML PDF Collect

A framework for an integrated unified modeling language

Mohammad ALSHAYEB,Nasser KHASHAN,Sajjad MAHMOOD

Frontiers of Information Technology & Electronic Engineering 2016, Volume 17, Issue 2,   Pages 143-159 doi: 10.1631/FITEE.1500094

Abstract:

The unified modeling language (UML) is one of the most commonly used modeling languages in the softwarea framework for integrating the UML extensions and then use the framework to propose an integrated unified

Keywords： Unified modeling language (UML)     Integration     Modeling     System analysis and design    

HTML PDF Collect

Fundamental Issues Towards Unified Design Theory of Recycled and Natural Aggregate Concrete Components Article

Jianzhuang Xiao, Kaijian Zhang, Tao Ding, Qingtian Zhang, Xuwen Xiao

Engineering 2023, Volume 29, Issue 10,   Pages 188-197 doi: 10.1016/j.eng.2023.03.017

Abstract: Consequently, demands for a unified design of natural aggregate concrete (NAC) and RAC components haveAccordingly, this study analyses the necessity of a unified design theory and provides an in-depth demonstrationThe uniaxial compressive constitutive relationship between NAC and RAC has a unified mathematical expressionAdditionally, the feasibility of the proposed unified time-dependent design theory is demonstrated in

Keywords： RAC)     Natural aggregate concrete (NAC)     Strength determination     Constitutive relation     Reliability     Unified    

HTML PDF Collect

reference tracking control design for a class of nonlinear systems with time-varying delays

Mei-qin LIU,Hai-yang CHEN,Sen-lin ZHANG

Frontiers of Information Technology & Electronic Engineering 2015, Volume 16, Issue 9,   Pages 759-768 doi: 10.1631/FITEE.1500053

Abstract: A unified model consisting of a linear delayed dynamic system and a bounded static nonlinear operatorSecond, the performance analysis of the closed-loop system including this unified model, referencemodel, and state feedback controller is presented.The reference model adopted here is modified to be more flexible.

Keywords： H∞     reference tracking     Nonlinear system     State feedback control     Time-varying delays     Unified model    

HTML PDF Collect

Communicative Learning: A Unified Learning Formalism Review

Luyao Yuan, Song-Chun Zhu

Engineering 2023, Volume 25, Issue 6,   Pages 77-100 doi: 10.1016/j.eng.2022.10.017

Abstract:

In this article, we propose a communicative learning (CL) formalism that unifies existing machine learning paradigms, such as passive learning, active learning, algorithmic teaching, and so forth, and facilitates the development of new learning methods. Arising from human cooperative communication, this formalism poses learning as a communicative process and combines pedagogy with the burgeoning field of machine learning. The pedagogical insight facilitates the adoption of alternative information sources in machine learning besides randomly sampled data, such as intentional messages given by a helpful teacher. More specifically, in CL, a teacher and a student exchange information with each other collaboratively to transmit and acquire certain knowledge. Each agent has a mind, which includes the agent's knowledge, utility, and mental dynamics. To establish effective communication, each agent also needs an estimation of its partner's mind. We define expressive mental representations and learning formulation sufficient for such recursive modeling, which endows CL with human-comparable learning efficiency. We demonstrate the application of CL to several prototypical collaboration tasks and illustrate that this formalism allows learning protocols to go beyond Shannon's communication limit. Finally, we present our contribution to the foundations of learning by putting forth hierarchies in learning and defining the halting problem of learning.

Keywords： Artificial intelligencehine     Cooperative communication     Machine learning     Pedagogy     Theory of mind    

HTML PDF Collect

A Framework of Knowledge Theory： Toward a Unified Theory of Information, Knowledge and Intelligence

Zhong Yixin

Strategic Study of CAE 2000, Volume 2, Issue 9,   Pages 50-64

Abstract: It is believed that the establishment of the knowledge theory will lay a solid foundation to the unified

Keywords： knowledge     amount of knowledge     knowledge formation     knowledge activation     unified theory of information-knowledge-intelligence    

HTML PDF Collect

Unified calculation method and its application in determining the uniaxial mechanical properties of concrete

Faxing DING, Xiaoyong YING, Linchao ZHOU, Zhiwu YU

Frontiers of Structural and Civil Engineering 2011, Volume 5, Issue 3,   Pages 381-393 doi: 10.1007/s11709-011-0118-6

Abstract: This paper presents a unified calculation method and its application in determining the uniaxial mechanicalnormal-strength, high-strength and super high-strength concrete in China and performing a regression analysis, unified

Keywords： concrete     mechanical properties     stress-strain relationship     uniaxial stress     application    

HTML PDF Collect

A unified power electronic controller for wind driven grid connected wound rotor induction generator

D. R. BINU BEN JOSE, N. AMMASAI GOUNDEN, Raavi SRI NAGA RAMESH

Frontiers in Energy 2013, Volume 7, Issue 1,   Pages 39-48 doi: 10.1007/s11708-012-0229-3

Abstract: a simple power converter for a wound rotor induction generator employing a three phase diode bridge rectifier

Keywords： line commutated inverter     MPPT     power smoothing     wound rotor induction generator    

HTML PDF Collect

Unified power quality conditioner based on a three-level NPC inverter using fuzzy control techniques

Salim CHENNAI,M-T BENCHOUIA

Frontiers in Energy 2014, Volume 8, Issue 2,   Pages 221-239 doi: 10.1007/s11708-014-0317-7

Abstract: This paper presents a novel and efficient control scheme for unified power quality conditioner (UPQC)

Keywords： three-level neutral point clamped (NPC) inverter     unified power quality conditioner (UPQC)     current harmonics    

HTML PDF Collect

Solid-state transformer-based new traction drive system and control

Jianghua FENG, Jing SHANG, Zhixue ZHANG, Huadong LIU, Zihao HUANG

Frontiers of Mechanical Engineering 2018, Volume 13, Issue 3,   Pages 411-426 doi: 10.1007/s11465-018-0467-0

Abstract: integrated control strategy built upon synchronous rotating reference frame is presented to achieve unifiedIn view of the secondary pulsating existing in a single-phase system, the mathematical model of secondary

Keywords： solid-state traction transformer     high-voltage cascaded rectifier     LLC resonant converter     synchronous rotating    

HTML PDF Collect

Unified solution of limit loads of thick wall cylinder subject to external pressure considering strain

CHEN Changfu, XIAO Shujun, YANG Yu

Frontiers of Structural and Civil Engineering 2007, Volume 1, Issue 3,   Pages 329-333 doi: 10.1007/s11709-007-0043-x

Abstract: Based on the unified strength theory [1], a unified strength criterion for strain softening materials
HTML PDF Collect

An Introduction to Cognetics—Unified Theory of Information, Knowledge and Intelligence

Zhong Yixin

Strategic Study of CAE 2004, Volume 6, Issue 6,   Pages 1-8

Abstract: paper to study the properties and the refining laws of the information resources and to establish a unified

Keywords： information theory     knowledge theory     intelligence theory     cogmatics    

HTML PDF Collect

High Performance Electrically Small Huygens Rectennas Enable Wirelessly Powered Internet of Things Sensing Applications: A Review Review

Wei Lin, Richard W. Ziolkowski

Engineering 2022, Volume 11, Issue 4,   Pages 42-59 doi: 10.1016/j.eng.2021.08.025

Abstract:

Far-field wireless power transfer (WPT) is a major breakthrough technology that will enable the many anticipated ubiquitous Internet of Things (IoT) applications associated with fifth generation (5G), sixth generation (6G), and beyond wireless ecosystems. Rectennas, which are the combination of rectifying circuits and antennas, are the most critical components in far-field WPT systems. However, compact application devices require even smaller integrated rectennas that simultaneously have large electromagnetic wave capture capabilities, high alternating current (AC)-to-direct current (DC) (AC-to-DC) conversion efficiencies, and facilitate a multifunctional wireless performance. This paper reviews various rectenna miniaturization techniques such as meandered planar inverted-F antenna (PIFA) rectennas; miniaturized monopole- and dipole-based rectennas; fractal loop and patch rectennas; dielectric-loaded rectennas; and electrically small near-field resonant parasitic rectennas. Their performance characteristics are summarized and then compared with our previously developed electrically small Huygens rectennas that are proven to be more suitable for IoT applications. They have been tailored, for example, to achieve battery-free IoT sensors as is demonstrated in this paper. Battery-free, wirelessly powered devices are smaller and lighter in weight in comparison to battery-powered devices. Moreover, they are environmentally friendly and, hence, have a significant societal benefit. A series of high-performance electrically small Huygens rectennas are presented including Huygens linearly-polarized (HLP) and circularly-polarized (HCP) rectennas; wirelessly powered IoT sensors based on these designs; and a dual-functional HLP rectenna and antenna system. Finally, two linear uniform HLP rectenna array systems are considered for significantly larger wireless power capture. Example arrays illustrate how they can be integrated advantageously with DC or radio frequency (RF) power-combining schemes for practical IoT applications.

Keywords： Cardioid pattern     Electrically small antenna     Huygens dipole antenna     Internet of Things (IoT)     Rectenna     Rectifier    

HTML PDF Collect

Title Author Date Type Operation

Scavenging Microwave Wireless Power: A Unified Model, Rectenna Design Automation, and Cutting-Edge Techniques

Si-Ping Gao, Jun-Hui Ou, Xiuyin Zhang, Yongxin Guo

Journal Article

Unified description of sand behavior

Feng ZHANG, Bin YE, Guanlin YE

Journal Article

Unified cycle model of a class of internal combustion engines and their optimum performance characteristics

Shiyan ZHENG

Journal Article

A framework for an integrated unified modeling language

Mohammad ALSHAYEB,Nasser KHASHAN,Sajjad MAHMOOD

Journal Article

Fundamental Issues Towards Unified Design Theory of Recycled and Natural Aggregate Concrete Components

Jianzhuang Xiao, Kaijian Zhang, Tao Ding, Qingtian Zhang, Xuwen Xiao

Journal Article

reference tracking control design for a class of nonlinear systems with time-varying delays

Mei-qin LIU,Hai-yang CHEN,Sen-lin ZHANG

Journal Article

Communicative Learning: A Unified Learning Formalism

Luyao Yuan, Song-Chun Zhu

Journal Article

A Framework of Knowledge Theory： Toward a Unified Theory of Information, Knowledge and Intelligence

Zhong Yixin

Journal Article

Unified calculation method and its application in determining the uniaxial mechanical properties of concrete

Faxing DING, Xiaoyong YING, Linchao ZHOU, Zhiwu YU

Journal Article

A unified power electronic controller for wind driven grid connected wound rotor induction generator

D. R. BINU BEN JOSE, N. AMMASAI GOUNDEN, Raavi SRI NAGA RAMESH

Journal Article

Unified power quality conditioner based on a three-level NPC inverter using fuzzy control techniques

Salim CHENNAI,M-T BENCHOUIA

Journal Article

Solid-state transformer-based new traction drive system and control

Jianghua FENG, Jing SHANG, Zhixue ZHANG, Huadong LIU, Zihao HUANG

Journal Article

Unified solution of limit loads of thick wall cylinder subject to external pressure considering strain

CHEN Changfu, XIAO Shujun, YANG Yu

Journal Article

An Introduction to Cognetics—Unified Theory of Information, Knowledge and Intelligence

Zhong Yixin

Journal Article

High Performance Electrically Small Huygens Rectennas Enable Wirelessly Powered Internet of Things Sensing Applications: A Review

Wei Lin, Richard W. Ziolkowski

Journal Article