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CocoSketch: High-Performance Sketch-Based Measurement Over Arbitrary Partial Key Query

IEEE-ACM TRANSACTIONS ON NETWORKING 2023年第6期31卷 2653-2668页

作者： Miao, Ruijie zhang, Yinda Zheng, Zihao Wang, Ruixin zhang, ruwen Yang, Tong Liu, Zaoxing Jiang, Junchen Peking Univ Sch Comp Sci Natl Key Lab Multimedia Informat Proc Beijing 100871 Peoples R China Univ Penn Dept Comp & Informat Sci Philadelphia PA 19104 USA Peng Cheng Lab Shenzhen 518055 Peoples R China Boston Univ Elect & Comp Engn Dept Boston MA 02215 USA Boston Univ Dept Comp Sci Boston MA 02215 USA Univ Chicago Dept Comp Sci Chicago IL 60637 USA

Sketch-based measurement has emerged as a promising solutions due to its high accuracy and resource efficiency. Prior sketches focus on measuring single flow keys and cannot support measurement on multiple keys. This work takes a significant step towards supporting arbitrary partial key queries, which aims to provide information for any key in the predefined range of possible flow keys. The designed system, casts arbitrary partial key queries to the subset sum estimation problem and makes the theoretical tools for subset sum estimation practical. utilizes two techniques: (1) stochastic variance minimization to significantly reduce per-packet update delay, and (2) removing circular dependencies in the per-packet update logic to make the implementation hardware-friendly. This paper extends the conference version by discussing how adapts to new measurement requirements, including: (1) collecting the exact information of specified flow keys, and (2) distributed measurement. is implemented on five popular platforms (CPU, Open vSwitch, Redis, P4, and FPGA). Experiment results show that compared to baselines that use traditional single-key sketches, improves average packet processing throughput by $27.2\times$ and accuracy by $10.4\times$ when measuring six flow keys.

关键词： Throughput Software measurement Hardware Task analysis Software Minimization Field programmable gate arrays Sketch arbitrary partial key query P4 FPGA

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莫里森作品经典化问题的后殖民审视

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外国文学研究 2014年第6期36卷 82-90页

作者：章汝雯浙江财经大学外国语学院

本文针对我国莫里森作品"研究热"现象,以莫里森作品的经典化进程为研究对象,指出不仅意识形态、评论界、经典性、各类奖项、学校教育等传统认定的因素在此过程中起着不可忽视的作用,自上个世纪三八十年代末期开始盛行的后殖... 详细信息

本文针对我国莫里森作品"研究热"现象,以莫里森作品的经典化进程为研究对象,指出不仅意识形态、评论界、经典性、各类奖项、学校教育等传统认定的因素在此过程中起着不可忽视的作用,自上个世纪三八十年代末期开始盛行的后殖民主义理论思潮对莫里森作品在短短的四十多年就进入经典化进程也起着催化剂的作用,因为后殖民主义理论核心与黑人女性作品内涵有着高度的契合。

关键词：莫里森经典化经典性后殖民主义理论思潮

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OneSketch: A Generic and Accurate Sketch for Data Streams

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IEEE TRANSACTIONS ON KNOWLEDGE AND DATA ENGINEERING 2023年第12期35卷 12887-12901页

作者： Fan, Zhuochen Wang, Ruixin Cai, Yalun zhang, ruwen Yang, Tong Wu, Yuhan Cui, Bin Uhlig, Steve Peking Univ Sch Comp Sci Natl Key Lab Multimedia Informat Proc Beijing 100871 Peoples R China Peng Cheng Lab Shenzhen 518066 Peoples R China Queen Mary Univ London Sch Elect Engn & Comp Sci London E1 4NS England

In this paper, we propose a generic sketch algorithm capable of achieving more accuracy in the following five tasks: finding top-k frequent items, finding heavy hitters, per-item frequency estimation, and heavy changes in the time and spatial dimension. The state-of-the-art (SOTA) sketch solution for multiple measurement tasks is ElasticSketch (ES). However, the accuracy of its frequency estimation has room for improvement. The reason for this is that ES suffers from overestimation errors in the light part, which introduces errors when querying both frequent and infrequent items. To address these problems, we propose a generic sketch, OneSketch, designed to minimize overestimation errors. To achieve the design goal, we propose four key techniques, which embrace hash collisions and minimize possible errors by handling highly recurrent item replacements well. Experimental results show that OneSketch clearly outperforms 12 SOTA schemes. For example, compared with ES, OneSketch achieves more than 10x lower Average Absolute Error on finding top-k frequent items and heavy hitters, as well as 48.3% and 38.4% higher F1 Scores on two heavy changes under 200 KB memory, respectively.

关键词： Task analysis Frequency control Frequency estimation Arrays Estimation Time-frequency analysis Registers Data streams sketch frequency estimation top-k heavy hitters per-item heavy changes

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Cooperation dilemmas in construction and demolition waste recycling: From understanding to navigating

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INTERNATIONAL JOURNAL OF PRODUCTION ECONOMICS 2025年 283卷

作者： Lin, Weize zhang, Jing Yu, Minjiu Tan, ruwen Sichuan Univ Coll Architecture & Environm 24 South Sect 1Yihuan Rd Chengdu 610065 Peoples R China

High-quality recycling is considered the optimal practice for managing the significant volume of construction and demolition waste (C&DW). However, the lack of coordinated cooperation among stakeholders poses challenges in sustaining and advancing the recycling supply chain. However, the previous research on the decisionmaking of partnerships among companies is limited despite its importance. Hence, our research framework seeks to address the gap, unfolding from understanding to navigating. Initially, to understand the status quo, we model a partnership decision game where companies face a choice: either commit to in-depth cooperation benefiting from coordination contracts, or opt for surface-level cooperation via straightforward wholesale transactions. Our findings reveal the transfer effect that relation-specific investments of low-power companies may undermine the vested interests of high-power companies, which leads to a prisoner's dilemma dominated by surface-level cooperation. Subsequently, we propose two remedies, a subsidy scheme and a policy of strategic information revelation, to address the dilemma. Specifically, we suggest a Cooperation Subsidy to motivate the remanufacturer and the collector to choose in-depth cooperation, which proves more efficient than conventional economic regulations. Moreover, we design a signal structure based on Bayesian Persuasion to persuade the remanufacturer to opt for in-depth cooperation. This study seeks to provide theoretical support for government policy development.

关键词： Construction and demolition waste Recycling management Relation-specific investment Coordination Bayesian persuasion Game theory

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《所罗门之歌》中的女性化话语和女权主义话语

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外国文学 2005年第5期 85-90页

作者：章汝雯浙江财经学院外国语学院浙江杭州310012

本文主要以富考和多罗茜.史密斯的话语分析理论为依据,剖析《所罗门之歌》中存在的女性化话语和女权主义话语。文章认为这两种话语是互动的,指出莫里森通过这对矛盾的抗衡及其力量关系的改变,既揭示了父权社会家庭中女性压抑的心理和生... 详细信息

本文主要以富考和多罗茜.史密斯的话语分析理论为依据,剖析《所罗门之歌》中存在的女性化话语和女权主义话语。文章认为这两种话语是互动的,指出莫里森通过这对矛盾的抗衡及其力量关系的改变,既揭示了父权社会家庭中女性压抑的心理和生活,又让读者看到黑人妇女为争取个性解放而作的种种努力,以及这些努力给妇女的生活和命运所带来的变化。

关键词：女性化女权主义话语互动

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The osteogenesis performance of titanium modified via plasma-enhanced chemical vapor deposition:in vitroandin vivostudies

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BIOMEDICAL MATERIALS 2020年第5期15卷 055012-055012页

作者： Yu, Wanqi Wang, Xiaona Guo, Yu Yang, Shihui Zhou, Zhe Sun, Xiaolong zhang, ruwen Guo, Tianqi Zhou, Yanmin Zhao, Jinghui Jilin Univ Hosp Stomatol Dept Dent Implantol Changchun 130021 Peoples R China Jilin Prov Key Lab Tooth Dev & Bone Remodeling Changchun 130021 Peoples R China

Titanium (Ti) and its alloys are widely used in dental implants due to their favorable mechanical properties and biocompatibility. Surface characteristics, including physical and chemical properties, are crucial factors to enhance the osteogenesis performance of Ti. The aim of this study is to evaluate amino group surface modification to facilitate the osteogenic potential and bone repair of dental implants bothin vitroandin vivo. Herein, amino group-modified Ti surfaces were constructed via the plasma-enhanced chemical vapor deposition (PECVD) technique with an allylamine monomer. The adhesion, proliferation, alkaline phosphate activity and osteogenesis-related genetic expression of MG-63 cells on the surfaces were performedin vitroand presented a significant increase in amino group-modified Ti compared with that in Ti. Thein vivostudy in miniature pigs was evaluated through micro-computed tomography analysis and histological evaluation, which exhibited enhanced new bone formation in amino group-modified Ti compared with that in Ti after implantation for 4, 8 and 12 weeks. Consequently, amino group surface modification with the PECVD technique may provide a promising modification method to enhance the osteogenesis performance of Ti implants.

关键词： titanium plasma-enhanced chemical vapor deposition (PECVD) amino groups osteogenesis performance dental implants surface modification

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《宠儿》汉译本中话语的建构与解构

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外语教学 2011年第6期32卷 82-86页

作者：章汝雯清华大学人文社会科学学院北京100084

《宠儿》是托妮.莫里森1993年问鼎诺贝尔文学奖的主力作品,也是国内美国族裔文学研究领域的热点作品;但到目前为止,却没有学者关注过该作品的汉译状况。2006年汉译版《宠儿》是近几年国内部分外国文学评论者对该作品进行研究的文本基础... 详细信息

《宠儿》是托妮.莫里森1993年问鼎诺贝尔文学奖的主力作品,也是国内美国族裔文学研究领域的热点作品;但到目前为止,却没有学者关注过该作品的汉译状况。2006年汉译版《宠儿》是近几年国内部分外国文学评论者对该作品进行研究的文本基础。译者成功地再现了小说中震撼人心的故事,让读者领略到这位诺贝尔文学奖获得者的艺术风格和创作特色;但鉴于《宠儿》深刻的文化政治内涵,本文认为该译本在重现英文原著时仍存在三个方面的问题:完全异化策略影响了译文的流畅性和逻辑性,原文深刻的政治内涵没有得到有效地再现,黑人文化层面建构不足。鉴于国内的"《宠儿》热"和2006年汉译本中存在问题的典型性,笔者认为有必要对该译本做些评析以引起学界对托妮.莫里森作品汉译质量的关注。

关键词：话语文本建构解构

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CocoSketch: High-Performance Sketch-based Measurement over Arbitrary Partial Key Query 21

CocoSketch: High-Performance Sketch-based Measurement over A...

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ACM SIGCOMM Conference (SIGCOMM)

作者： zhang, Yinda Liu, Zaoxing Wang, Ruixin Yang, Tong Li, Jizhou Miao, Ruijie Liu, Peng zhang, ruwen Jiang, Junchen Peking Univ Beijing Peoples R China Boston Univ Boston MA 02215 USA Univ Chicago Chicago IL 60637 USA

ISBN: (纸本)9781450383837

Sketch-based measurement has emerged as a promising alternative to the traditional sampling-based network measurement approaches due to its high accuracy and resource efficiency. While there have been various designs around sketches, they focus on measuring one particular flow key, and it is infeasible to support many keys based on these sketches. In this work, we take a significant step towards supporting arbitrary partial key queries, where we only need to specify a full range of possible flow keys that are of interest before measurement starts, and in query time, we can extract the information of any key in that range. We design CocoSketch, which casts arbitrary partial key queries to the subset sum estimation problem and makes the theoretical tools for subset sum estimation practical. To realize desirable resource-accuracy tradeoffs in software and hardware platforms, we propose two techniques: (1) stochastic variance minimization to significantly reduce per-packet update delay, and (2) removing circular dependencies in the per-packet update logic to make the implementation hardware-friendly. We implement CocoSketch on four popular platforms (CPU, Open vSwitch, P4, and FPGA) and show that compared to baselines that use traditional single-key sketches, CocoSketch improves average packet processing throughput by 27.2x and accuracy by 10.4x when measuring six flow keys.

关键词： Sketch Arbitrary Partial Key Query P4 FPGA

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爵士乐时代的幻灭

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外语教学 2003年第4期24卷 90-93页

作者：章汝雯浙江财经学院外国语学院浙江杭州310012

F.S.菲兹杰拉德于 1931年 11月在 Scribner杂志发表文章 ,生动形象地描述了 2 0世纪 2 0年代的美国社会 ;时隔半个世纪 ,托尼·莫里森的小说《爵士乐》出版 ,菲兹杰拉德文章中所反映的问题在她的小说中一一得到演绎 ,真可谓英雄所... 详细信息

F.S.菲兹杰拉德于 1931年 11月在 Scribner杂志发表文章 ,生动形象地描述了 2 0世纪 2 0年代的美国社会 ;时隔半个世纪 ,托尼·莫里森的小说《爵士乐》出版 ,菲兹杰拉德文章中所反映的问题在她的小说中一一得到演绎 ,真可谓英雄所见略同。本文从“爵士乐时代的召唤”和“爵士乐时代的幻灭”两部分剖析《爵士乐》中所反映的社会问题 ;笔者认为 ,托尼·莫里森创作《爵士乐》的主要目的是向读者展示美国 2 0世纪 2 0年代的物质财富的绚丽光环只是一种假象 ,它的背后隐藏着深刻的精神危机。与 F.S.菲兹杰拉德不同的是 ,出于对本民族的关注 ,托尼·莫里森更注重黑人的挣扎和幻灭的痛苦。

关键词：爵士乐召唤幻灭黑人

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托妮·莫里森笔下的黑人形象

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外语教学 2008年第3期29卷 55-59页

作者：章汝雯刘益浙江财经学院外国语学院浙江杭州310018

本文指出在20世纪70年代的整整十年中,从佩科拉母女的消极形象,到毁誉参半的秀拉,再到因文化归位而确立自我的米克曼,莫里森成功地刻画了一个勤劳、智慧、情感丰富、有个性、有追求、热爱黑人民族但又有着不同程度自卑感和其他一些缺点... 详细信息

本文指出在20世纪70年代的整整十年中,从佩科拉母女的消极形象,到毁誉参半的秀拉,再到因文化归位而确立自我的米克曼,莫里森成功地刻画了一个勤劳、智慧、情感丰富、有个性、有追求、热爱黑人民族但又有着不同程度自卑感和其他一些缺点的黑人群体形象,积极探索了刻画肯定的黑人形象的过程,实现了那个年代黑人审美运动的宗旨。

关键词：黑人形象消极积极民族文化

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