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多路径传输技术研究综述

软件学报 2025年第1期36卷 289-320页

作者：苏金树宋丛溪计晓岚徐草韩彪国防科技大学计算机学院湖南长沙410073 军事科学院北京100091

多路径传输技术是指通过设备上的多个网络接口,在通信双方建立多条传输路径,实现带宽聚合、负载均衡、路径冗余,增加传输的吞吐量,提高可靠性.多路径传输技术凭借其上述优势,已被广泛应用于服务器、终端和数据中心等场景,是网络体系结... 详细信息

多路径传输技术是指通过设备上的多个网络接口,在通信双方建立多条传输路径,实现带宽聚合、负载均衡、路径冗余,增加传输的吞吐量,提高可靠性.多路径传输技术凭借其上述优势,已被广泛应用于服务器、终端和数据中心等场景,是网络体系结构和传输技术研究的重要组成,具有重要研究价值和意义.为此,从概念、核心机制等方面,系统梳理了多路径传输技术.首先概述了多路径传输的基本概念、标准化进程以及应用价值.其次,阐述多路径传输技术的核心机制,包括拥塞控制、报文调度、路径管理、重传机制、安全机制,以及面向特定应用的机制设计.对每种机制的分类方法、主要研究成果给予了总结和评述,分析总结了不同机制的优缺点与发展方向.最后,探讨了多路径传输技术研究面临的挑战,展望了未来研究方向.

关键词：多路径传输 QUIC 拥塞控制报文调度智能网络

Influence of Polymer Binder on the Physical Properties and Stability of Engineering Spoil on a Slope

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Journal of Mountain Science 2013年第1期10卷 105-115页

作者： CHEN shu-yue gu Wei DAI Quan-yu State Key Laboratory of Earth Processes and Resource Ecology Beijing Normal University

An experiment was performed to study the influence of polymer binders on the physical properties,and stability against a simulated rainfall,of a slope consisting of engineering *** showed that low polymer binder concentrations(≤500g/m3) could enhance the air permeability and moisture-retaining capacity of the engineering spoil;however,adding more polymer binder made the hardness of the engineering spoil increase and then *** the increase of polymer binder concentrations,the surface(0-5cm) permeability of the engineering spoil decreased but the permeability of the lower layers(5-10cm) *** binders might reduce runoff and sediment,but the effect becomes weaker with the increase of *** results of this study have significance for engineering *** experiments are needed to study the effects of binders under other conditions,such as natural rainfall,different slopes,different rock types,different degrees and spoil weathering and different added material,and the chemical interaction between soil and polymer binders.

关键词： Polymer binder Engineering spoil Artificial simulation of rainfall

Blade optimization design and performance investigations of an ultra-low specific speed centrifugal blower

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Science China(Technological Sciences) 2011年第1期54卷 203-210页

作者： ZHANG Bin WANG Tong gu ChuanGang shu xinWei Key Laboratory'for Power Machinery and Engineering (Ministry of Education) Shanghai Jiao Tong University Shanghai 200240 China Blower Research Center Shanghai Electric Group Shanghai 200001 China

The ultra-low specific speed centrifugal blower is widely used in energy industries due to its features such as low flow rate,high pressure and low manufacturing cost. However,the width-to-diameter ratio of the above blower becomes relatively small to satisfy the needed operation condition and its performances are considerably degraded as a result of relatively high leakage,disc friction and passage friction loss consequently. The purpose of this paper is to improve its performance through the optimization design of the blade’s profile properly. Based on artificial neural networks (ANN) and hierarchical fair competition genetic algorithms with dynamic niche (HFCDN-GAs),the optimization design approach is established. By conjoining Bezier parameterization and FINE/TURBO solver,the optimized blade is designed by adjusting the profile gradually. An industrial ultra-low specific speed centrifugal blower with parallel hub and shroud has been selected as a reference case for optimization design. The performance investigations of the centrifugal blowers with different types of blades are conducted. The conclusions of the performance improvement of the optimized blade provide positive evidences in the application of the optimization design of the above blower blade.

关键词： ultra-low specific speed centrifugal blower blade optimization design ANN HFCDN-Gas performances investigations

Methane absorption and application of mixed organic aggregate prepared from Span80 and alkaline salt

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Science China(Technological Sciences) 2009年第8期52卷 2155-2160页

作者： ZHANG ZengZhi gu Na CAO Lei shu xinQian State Key Laboratory of Coal Resources and Mine Safety China University of Mining and TechnologyBeijing 100083China Research Institute of Ecological and Functional Materials China University of Mining and TechnologyBeijing 100083China School of Chemical and Environmental Engineering China University of Mining and TechnologyBeijing 100083China

The water-based materials for mine gas absorption and explosion suppression were prepared, in which the mixed organic aggregate of Span80 and alkaline salt can be used as methane absorbent. Methane was used as a model of mine gas, and the absorptions of methane with different complex materials were studied using head space gas chromatography. Then the state of aqueous material was characterized with laser light scattering instrument and the effects of different complex materials on explosion suppression were preliminarily studied in explosion chamber which can simulate mine gas explosion. The research results showed that complex material could absorb methane and there was some corre- lation between the mean diameter of organic aggregate in aqueous material and the absorption effect. Additionally, the aqueous material could suppress the methane explosion to some degree. The material can absorb mine gas in atomization condition, therefore, degrease mine gas concentration and influence the distribution of mine gas in the space, and then suppress the mine gas explosion to some extent.

关键词： sorbitan monooleate alkaline salt organic aggregate methane absorption mine gas explosion suppression

Reliable Control for Nonlinear Systems with Stochastic Actuators Fault and Random Delays Through a T-S Fuzzy Model Approach

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Acta Mathematicae Applicatae Sinica 2016年第2期32卷 395-406页

作者： Jin-liang LIU Zhou gu shu-min FEI School of Automation Southeast University College of Information Engineering Nanjing University of Finance and Economics

This paper considers the reliable control design for T-S fuzzy systems with probabilistic actuators faults and random time-varying delays. The faults of each actuator occurs randomly and its failure rates are governed by a set of unrelated random variables satisfying certain probabilistic distribution. In terms of the probabilistic failures of each actuator and time-varying random delays, new fault model is proposed. Based on the new fuzzy model, reliable controller is designed and sufficient conditions for the exponentially mean square stability （EMSS） of T-S fuzzy systems are derived by using Lyapunov functional method and linear matrix inequality （LMI） technique. It should be noted that the obtained criteria depend on not only the size of the delay, but also the probability distribution of it. Finally, a numerical example is given to show the effectiveness of the proposed method.

关键词： reliable control fuzzy system probabilistic failures random delays

Adaptive robust Max-SLNR precoder for MU-MIMO-OFDM systems with imperfect CSI

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Science China(Information Sciences) 2016年第6期59卷 130-143页

作者： Feng shu Juanjuan TONG xiaohu YOU Chen gu Jiajun WU School of Electronic and Optical Engineering Nanjing University of Science and Technology National Mobile Communications Research Laboratory Southeast University Ministerial Key Laboratory of JGMT Nanjing University of Science and Technology

The accuracy of channel state information(CSI) available at a base station(BS) has a direct impact on the performance of precoding in wideband multi-user multiple input, multiple output-orthogonal frequency division multiplexing(MIMO-OFDM) systems and depends on many factors, including: the delay between estimation and beamforming at the BS(also called the CSI delay), Doppler spread, the channel estimation method used, the average transmit power of pilot symbols, and the average number of pilot symbols that must be estimated per channel parameter. In this paper, the coefficient of CSI error needed to adapt to fading channels is modeled as a function of Doppler spread, CSI delay, and signal-to-noise ratio(SNR). In terms of the Gaussian-Markov CSI error model, an adaptive robust maximum signal-to-leakage-and-noise ratio(MaxSLNR) precoder is designed to track the statistical parameters of CSI error. The Doppler spread and SNR can be obtained through real-time estimation based on orthogonal pilot patterns. Simulation results show that,compared to non-adaptive robust and non-robust precoders of Max-SLNR, the proposed adaptive robust MaxSLNR precoder performs much better in terms of bit error rate(BER). Moreover, as either the average number of training symbols per channel parameter or the average transmit power increases, the BER performance of the proposed precoder approaches that of a precoder with ideal CSI.

关键词： multiuser MIMO OFDM Max-SLNR adaptive robust precoder beamforming

Compression Properties and Energy Absorption of A Novel Double Curved Beam Negative Stiffness Honeycomb Structures

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China Ocean Engineering 2024年第5期38卷 821-837页

作者： ZHENG Ze-peng WANG shu-qing WANG xi-chen YUE Wen College of Engineering Ocean University of ChinaQingdao 266100China Shandong Provincial Key Laboratory of Ocean Engineering Ocean University of ChinaQingdao 266100China

This paper presents the design of a novel honeycomb structure with a double curved *** purpose of this design is to achieve vibration isolation for the main engine of an offshore platform and reduce impact *** analytical formula for the force-displacement relationship of the honeycomb single-cell structure is presented based on the modal superposition *** formula provides a theoretical basis for predicting the compression performance of honeycomb *** effects of structural geometric parameters,series and parallel connection methods on the mechanical and energy absorption properties are investigated through mathematical modeling and experimental ***,the study focuses on the vibration isolation and impact resistance performance of honeycomb *** results show that the designed honeycomb structure has good mechanical and energy absorption performance,and its energy absorption effect is related to the geometric parameters and series and parallel connection methods of the *** isolation efficiency of the honeycomb with 4 rows and 3 columns reaches 38%.The initial isolation frequency of the isolator is 11.7 Hz.

关键词： double curved beam compression properties energy absorption vibration isolation

A Study on Framework of Open Standard and Intellectual Property in E-Business

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China Communications 2007年第4期4卷 89-93页

作者： Bi Chunli shu Huaying xi Jiarong Beijing Univ Posts & Telecommun Beijing Peoples R China

With the progress and development of information society,electronic business(e-Business) becomes a new model of business.E-Business does lower the cost of trading significantly;furthermore it allows restructuring the supply chain,business processes, and the nature of *** standard plays an important role in expanding e-Business,ranging from the Internet protocol(TCP/IP,HTTP...) to nearly all aspects of information technology that related to *** importantly,openness has emerged as a strategy with many of the most successful e-Business ventures granting business partner and consumers unparallel access to their inner working and *** standards have given rise to a prodigious international expansion in the number of users and range of applications relevant to daily *** traditional market failure argument suggests that because innovation is expensive to produce and cheap to copy,so more intellectual property incorporated into the standards,and e-Business is *** paper defines the new framework of e-Business,which describes the relationship of the public benefit from Open Standard and the private benefit from intellectual property and try to find a balance between the benefits of the patent holders,industry,and end-users in order to realize a winning situation for all parties.

关键词： IPR e-Business open standard

蛋白质组学技术在解析牛乳清蛋白代谢途径和生物功能中的应用研究进展

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乳业科学与技术 2025年第1期48卷 60-68页

作者：傅汐陈金叶顾颖赵琼昆明理工大学食品科学与工程学院云南昆明650500 云南乍甸乳业有限责任公司云南红河675999

乳清蛋白作为乳中的优质蛋白,具有丰富的营养价值和功能特性。乳清蛋白会因不同环境下物种的遗传变异和蛋白翻译后修饰导致表达量和结构的差异,使得其种类繁多而又复杂,给深入了解乳清蛋白增加了难度。随着组学技术的不断发展,人们对乳... 详细信息

乳清蛋白作为乳中的优质蛋白,具有丰富的营养价值和功能特性。乳清蛋白会因不同环境下物种的遗传变异和蛋白翻译后修饰导致表达量和结构的差异,使得其种类繁多而又复杂,给深入了解乳清蛋白增加了难度。随着组学技术的不断发展,人们对乳清蛋白的组成和功能活性有了更深入的了解。本文综述蛋白质组学技术在牛乳清蛋白研究中的应用,解析不同牛种、泌乳期、饲养条件和处理方式下乳清蛋白的种类、分子结构、代谢途径及生物功能之间的异同,以期为牛乳清蛋白的深入研究及个性化乳制品的研制提供科学的理论依据。

关键词：蛋白质组学牛乳清蛋白分子结构代谢途径生物功能