检索结果-南通市图书馆

Recent advances in high-performance triboelectric nanogenerators

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Nano Research 2023年第9期16卷 11698-11717页

作者： Di Liu Yikui Gao Linglin Zhou Jie wang zhong Lin wang Beijing Institute of Nanoenergy and Nanosystems Chinese Academy of SciencesBeijing 101400China College of Nanoscience and Technology University of Chinese Academy of SciencesBeijing 100049China School of Materials Science and Engineering Georgia Institute of TechnologyAtlantaGA 30332USA

The development of the Internet of Things(IoT)and artificial intelligence has accompanied the evolution of energy demand and structure in the new era,and the power sources for billions of distributed electronics and sensors have aroused worldwide *** an alternative energy harvesting technology,triboelectric nanogenerators(TENGs)have received remarkable attention and have shown attractive potential applications for use in micro/nano power sources,self-powered sensors,highvoltage power sources,and blue energy due to their advantages of small size,light weight,flexibility,low cost,and high efficiency at low *** this review,we discuss high-performance TENGs from the perspectives of triboelectric charge density,output voltage,energy density,and corresponding quantification *** these topics,the limitations,optimization methods and techniques,and potential directions to challenge these limits are comprehensively discussed and ***,we discuss the emerging challenges,strategies,and opportunities for research and development of highperformance TENGs.

关键词： high-performance triboelectric nanogenerator(TENG) charge density voltage energy density average power density

An Analytical Solution to the Model for Single Three-Level Trapped Ion Driven by External Fields

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Communications in Theoretical Physics 2007年第4期47卷 725-727页

作者： wang zhong-Jie CHEN Feng Department of Physics Anhui Normal University Wuhu 241000 China

The interaction of a single three-level trapped ion with two laser beams has been studied theoretically. With application of two successive unitary transformations, an analytical solution to this quantum system has be... 详细信息

关键词： three-level trapped ion unitary transformation Lamb-Dicke limit

Emerging Iontronic Sensing: Materials, Mechanisms, and Applications

在线全文

学校读者我要写书评

暂无评论

Research 2022年第4期2022卷 25-59页

作者： Yao Xiongg Jing Han Yifei wang zhong Lin wang Qijun Sun Beijing Institute of Nanoenergy and Nanosystems Chinese Academy of SciencesBeijing 101400China School of Nanoscience and Technology University of Chinese Academy of SciencesBeijing 100049China School of Materials Science and Engineering Georgia Institute of TechnologyAtlanta GA 30332USA Center on Nanoenergy Research School of Physical Science and TechnologyGuangxi UniversityNanning 530004China

Iontronic sensors represent a novel class of soft electronics which not only replicate the biomimetic structures and perception functions of human skin but also simulate the mechanical sensing *** on the similar mechanism with skin perception,the iontronic sensors can achieve ion migration/redistribution in response to external stimuli,promising iontronic sensing to establish more intelligent sensing interface for human-robotic ***,a comprehensive review on advanced technologies and diversified applications for the exploitation of iontronic sensors toward ionic skins and artificial intelligence is *** virtue of the excellent stretchability,high transparency,ultrahigh sensitivity,and mechanical conformality,numerous attempts have been made to explore various novel ionic materials to fabricate iontronic sensors with skin-like perceptive properties,such as self-healing and multimodal ***,to achieve multifunctional artificial skins and intelligent devices,various mechanisms based on iontronics have been investigated to satisfy multiple functions and human interactive *** from the unique material property,diverse sensing mechanisms,and elaborate device structure,iontronic sensors have demonstrated a variety of applications toward ionic skins and artificial intelligence.

关键词： artificial transparency satisfy

Dynamical Suppression of Nonlocal Decoherence in Two-State Quantum Systems

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Communications in Theoretical Physics 2009年第11期52卷 832-834页

作者： wang zhong-Jie ZHANG Kan Department of Physics Anhui Normal University Wuhu 241000 China

Nonlocal decoherence of two qubits due to pure phase damping has been *** have proposeda scheme to keep the entanglement of two qubits from nonlocal *** applying a series of±π pulses,nonlocaldecoherence can be thoro... 详细信息

关键词： entanglement quantum bits dynamical suppression

Study on Design of Interplex Method for GNSS Signal

在线全文

学校读者我要写书评

暂无评论

China Communications 2014年第A02期11卷 23-29页

作者： FENG Youjun wang zhong CHEN Dandan Department of Information Technology Sichuan Tourism University Chengdu 610100 Sichuan Province China School of Electrical and Information Engineering Sichuan University Chengdu 610065 Sichuan Province China

In order to satisfy sending multi-channel navigation signals in one frequency for modern GNSS（Global Navigation Satellite System）, the principle of Interplex multiplexing were introduced. And the three-way multiplexing structure and the four-way multiplexing method were also optimized. The Galileo E1 signal, as the example of Interplex reuse, was analyzed in detail. The power configuration of the multiplexing efficiency and the minimum of the multiplexing efficiency were obtained.

关键词： satellite navigation constant envelope Interplex multiplexing efficiency

Novel Global Optimization Algorithm with a Space-Filling Curve and Integral Function

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of the Operations Research Society of China 2021年第3期9卷 619-640页

作者： zhong-Yu wang Yong-Jian Yang Department of Mathematics Shanghai UniversityShanghai 200444China

In this study,we consider the global optimization problem in a *** use a class of series to construct a curve in a hypercube,which can fill the hypercube,and we present an integral function on the *** on the integral function,we propose an algorithm for solving the global optimization ***,we perform a convergence analysis and numerical experiments to demonstrate the effectiveness of the proposed algorithm.

关键词： Global optimization algorithm Integral function Space-filling curve Filled function

A new estimation of manganese distribution for local dwarf spheroidal galaxies

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Research in Astronomy and Astrophysics 2016年第9期16卷 137-144页

作者： Men-Quan Liu zhong-Xiang wang School of Physics and Space Science China West Normal University Shanghai Astronomical Observatory Chinese Academy of Sciences

The distribution of abundance for iron-peak elements in dwarf spheroidal galaxies （dSphs） is important for galaxy evolution and supernova （SN） nucleosynthesis. Nowadays, manganese （Mn） is one of the most observed iron-peak elements in local dSphs. Studies of its distributions allow us to derive and understand the evolution history of these dSphs. We improve a phenomenological model by a two-curve model including a new initial condition, that includes detailed calculations of SN explosion rates and yields. We compare the results with the observed Mn distribution data for three dSphs： Fornax, Sculpture and Sextans. We find that the model can describe the observed Fe and Mn distributions well simultaneously for the three dSphs. The results also indicate that the initial conditions should be determined by the low metallicity sam- ples in the beginning time of the galaxies and the previous assumption of metellicity-dependant Mn yield of SNIa is not needed when a wide mass range of core-collapse SNe is included. Our method is applicable to the chemical evolution of other iron-peak elements in dSphs and can be modified to provide more detailed processes for the evolution of dSphs.

关键词： galaxies dwarf-- galaxies individual (Fornax, Sculptor, Sextans) -- galaxies evolution --supernovae general

NUMERICAL SIMULATION OF WAVE RESISTANCE OF TRIMARANS BY NONLINEAR WAVE MAKING THEORY WITH SINKING AND TRIM BEING TAKEN INTO ACCOUNT

在线全文

学校读者我要写书评

暂无评论

Journal of Hydrodynamics 2011年第2期23卷 224-233页

作者： wang zhong LU Xiao-ping College of Naval Architecture and Power Naval University of Engineering Wuhan 430033 China

Up to now, there are no satisfactory numerical methods for simulating wave resistance of trimarans, mainly due to the difficulty related with the strong nonlinear features of the piece hull wave making and their interference. This article proposes a numerical method for quick and effective calculation of wave resistance of trimarans to be used in engineering applications. Based on Wyatt＇s work, the nonlinear free surface boundary condition, the time domain concept, and the full nonlinear wave making theory, using the Rankine source Green function, the 3-D surface panel method is expanded to solve the trimaran wave making problems, with high order nonlinear factors being taken into account, such as the influence of the sinking and trim, transom, and ship wave immersed hull surface. And the software is successfully developed to implement the method, which is validated. Several trimaran models, including a practical trimaran with a sonar dome and the transom, are used as numerical calculation samples, their wave making resistance is calculated both by the present method and some other methods such as linear （Dawson） methods. Moreover, sample model resistance tests were carried out to provide data for comparison, validation and analysis. Through the validation by model experiments, it is concluded that present method can well predict the wave making resistance, sinking and trim, and the accuracy of wave making resistance calculation is significantly improved by taking the trim and sinking into account, especially at high speeds.

关键词： trimaran nonlinear wave making resistance surface panel method sinking trim ship model test

The Grade-Tonnage Model for China's Molybdenum Deposits

在线全文

学校读者我要写书评

暂无评论

Acta Geologica Sinica(English Edition) 2012年第3期86卷 680-690页

作者： wang zhong XIAO Keyan SONG Chuanzhong School of Resources and Environmental Engineering Hefei University of TechnologyHefei 230009China Institute of Mineral Resource Chinese Academy of Geological SciencesBeijing 100037China

The authors have studied the statistical characteristics of China＇s molybdenum deposits to establish the grade-tonnage model based on the data updated to the end of 2010. The results showed that each type of China＇s molybdenum deposits complied with Lasky＇s law approximately and the characteristics of grade-tonnage model obey the lognormal distribution. However, there are poor correlations between grade and tonnage respectively. Ultimately, we aimed to fit the grade-tonnage model through the known distribution function, draw the cumulative probability curves, and evaluated undiscovered mineral resources of China＇s molybdenum deposits by means of Monte Carlo simulation integrated in MRAS.

关键词： molybdenum deposits grade-tonnage model probability statistics MRAS Monte Carlo simulation