检索结果-南通市图书馆

Analysis of affinely equivalent Boolean functions

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Science in China(Series F) 2007年第3期50卷 299-306页

作者： meng qingshu ZHANG HuanGuo YANG Min WANG ZhangYi Computer School Wuhan University Wuhan 430074 China State Key Laboratory of Software Engineering Wuhan University Wuhan 430074 China International School of Software Wuhan University Wuhan 430074 China

By some basic transforms and invariant theory, we give two results： 1） an algorithm, which can be used to judge if two Boolean functions are affinely equivalent and to obtain the equivalence relationship if they are equivalent. This is useful in studying Boolean functions and in engineering. For example, we classify all 8-variable homogeneous bent functions of degree 3 into two classes; 2） Reed-Muller codes R（4,6）/R（1,6）, R（3,7）/R（1,7） are classified efficiently.

关键词： Boolean functions Reed-Muller code affinely equivalent invariant

New AES Dual Ciphers Based on Rotation of Columns

在线全文

学校读者我要写书评

暂无评论

Wuhan University Journal of Natural Sciences 2019年第2期24卷 93-97页

作者： YANG Min XIAO Benchang meng qingshu The Key Laboratory of Aerospace Information and Trusted Computing Ministry of Education School of Cyber Science and Engineering Wuhan University Suzhou C* Core Technology Co. Ltd

Based on the different representations of the finite field GF(256), there are different Advanced Encryption Standard(AES) implementations, which is called dual ciphers. They have the same encryption process as AES, but with parameters modified. The research of dual ciphers initially aims to find more efficient AES implementations, and later it is found that they can be used to resist side-channel attacks and for white box ciphers. In this paper, based on the rotation of columns, we propose new AES dual ciphers, which use AES directly, but with the input matrices(plaintexts and keys) and output matrix rotated. The key expansion algorithm only needs some change on the computation sequence. Because of these features, there is almost no extra cost in implementing dual ciphers and it is easy for new dual ciphers to work with other side-channel protection methods to protect AES in more dimensions.

关键词： AES dual cipher side channel security differential power analysis template attack

The next-generation sequencing technology and application

在线全文

学校读者我要写书评

暂无评论

Protein & Cell 2010年第6期1卷 520-536页

作者： Xiaoguang Zhou Lufeng Ren qingshu meng Yuntao Li Yude Yu Jun Yu Key Laboratory of Genome Sciences and Information Beijing Institute of GenomicsChinese Academy of SciencesBeijing 100029China Institute of Semiconductor Chinese Academy of SciencesBeijing 100083China The Joint Laboratory of Bioinformation Acquisition and Sensing Technology Beijing 100029China

As one of the key technologies in biomedical research,DNA sequencing has not only improved its productivity with an exponential growth rate but also been applied to new areas of application over the past few *** is largely due to the advent of newer generations of sequencing platforms,offering ever-faster and cheaper ways to analyze *** our previous review,we looked into technical characteristics of the nextgeneration sequencers and provided prospective insights into their future *** this article,we present a brief overview of the advantages and shortcomings of key commercially available platforms with a focus on their suitability for a broad range of applications.

关键词： next-generation sequencing technology RNA-seq ChIP-seq metagenome transcriptome epigenome

A systematic identification of Kolobok superfamily transposons in Trichomonas vaginalis and sequence analysis on related transposases

在线全文

学校读者我要写书评

暂无评论

Journal of Genetics and Genomics 2011年第2期38卷 63-70页

作者： qingshu meng Kaifu Chen Lina Ma Songnian Hu Jun Yu CAS Key Laboratory of Genome Sciences and Information Beijing Institute of Genomics Chinese Academy of Sciences Beijing 100029 China Graduate University of Chinese Academy of Sciences Beijing 100049 China Division of Biostatistics Dan L. Duncan Cancer Center Baylor College of Medicine Houston TX 77030 USA Department of Molecular and Cellular Biology Baylor College of Medicine Houston TX 77030 USA

Transposons are sequence elements widely distributed among genomes of all three kingdoms of life, providing genomic changes and playing significant roles in genome evolution. Trichomonas vaginalis is an excellent model system for transposon study since its genome （- 160 Mb） has been sequenced and is composed of - 65% transposons and other repetitive elements. In this study, we primarily report the identification of Kolobok-type transposons （termed tvBac） in T. vaginalis and the results of transposase sequence analysis. We categorized 24 novel subfamilies of the Kolobok element, including one autonomous subfamily and 23 non-autonomous subfamilies. We also identified a novel H2CH motif in tvBac transposases based on multiple sequence alignment. In addition, we supposed that tvBac and Mutator transposons may have evolved independently from a common ancestor according to our phylogenetic analysis. Our results provide basic information for the understanding of the function and evolution of tvBac transposons in particular and other related transposon families in general.

关键词： Trichomonas vaginalis Transposase Kolobok tvBac

Genome of the Giant Panda Roundworm Illuminates Its Host Shift and Parasitic Adaptation

在线全文

学校读者我要写书评

暂无评论

Genomics, Proteomics & Bioinformatics 2022年第2期20卷 366-381页

作者： Yue Xie Sen Wang Shuangyang Wu Shenghan Gao qingshu meng Chengdong Wang Jingchao Lan Li Luo Xuan Zhou Jing Xu Xiaobin Gu Ran He Zijiang Yang Xuerong Peng Songnian Hu Guangyou Yang Department of Parasitology College of Veterinary MedicineSichuan Agricultural UniversityChengdu 611130China Agricultural Genomics Institute Chinese Academy of Agricultural SciencesShenzhen 518120China State Key Laboratory of Microbial Resources Institute of MicrobiologyChinese Academy of SciencesBeijing 100101China Department of Oncology and Pathology Karolinska InstitutetStockholm 17164Sweden Department of Urology Feinberg School of MedicineNorthwestern UniversityChicagoIL 60611USA Chengdu Research Base of Giant Panda Breeding Chengdu 610081China Institute of Animal Genetics and Breeding College of Animal Science and TechnologySichuan Agricultural UniversityChengdu 611130China Department of Civil and Environmental Engineering University of MarylandCollege ParkMD 20740USA Department of Chemistry College of Life and Basic ScienceSichuan Agricultural UniversityChengdu 611130China University of Chinese Academy of Sciences Beijing 100049China

Baylisascaris schroederi,a roundworm(ascaridoid)parasite specific to the bamboofeeding giant panda(Ailuropoda melanoleuca),represents a leading cause of mortality in wild giant panda ***,we present a 293-megabase chromosome-level genome assembly of *** to infer its biology,including host *** genomics revealed an evolutionary trajectory accompanied by host-shift events in ascaridoid parasite lineages after host separations,suggesting their potential for transmission and rapid adaptation to new *** and anatomical lines of evidence,including expansion and positive selection of genes related to the cuticle and basal metabolisms,indicate that *** undergoes specific adaptations to survive in the sharp-edged bamboo-enriched gut of giant pandas by structurally increasing its cuticle thickness and efficiently utilizing host nutrients through gut ***,we characterized the secretome of *** and predicted potential drug and vaccine targets for new control ***,this genome resource provides new insights into the host adaptation of *** to the giant panda as well as the host-shift events in ascaridoid parasite *** findings on the unique biology of *** will also aid in the development of prevention and treatment measures to protect giant panda populations from roundworm parasitism.

关键词： Giant panda Baylisascaris genome Host shift Parasitism evolution Host adaptation

在线全文

学校读者我要写书评

暂无评论

《阿金》与鲁迅晚期思想的限度

文学评论 2019年第4期 98-105页

作者：孟庆澍首都师范大学文学院

阿金是鲁迅晚期创作中一个独特的存在,是鲁迅在现实的驱动之下,观察并再现的一种前所未有的“城市劳动妇女”类型。她更具行动的自主性与独立性,是鲁迅创造但不能完全掌控、把握和理解的人物。事实上,我们可以将鲁迅与阿金理解为一种颠... 详细信息

阿金是鲁迅晚期创作中一个独特的存在,是鲁迅在现实的驱动之下,观察并再现的一种前所未有的“城市劳动妇女”类型。她更具行动的自主性与独立性,是鲁迅创造但不能完全掌控、把握和理解的人物。事实上,我们可以将鲁迅与阿金理解为一种颠倒的镜像关系,鲁迅从中既可看到部分的自我,同时又可以察觉到自己的弱点。鲁迅之“讨厌”,固然指向阿金,但也指向阿金这一镜像所反射的自我,而隐藏在层层修辞圈套之下的自我指涉,或许才是《阿金》文本复杂性的真正根源。

关键词：阿金都市性 “讨厌” 镜像自我指涉

从“差不多”到《尝试集》——《端午节》的内在“低音”

在线全文

学校读者我要写书评

暂无评论

文学评论 2022年第3期 81-89页

作者：孟庆澍首都师范大学文学院

方玄绰的“差不多”说乃是鲁迅人生经验的结晶,是人互为奴隶的困境之缩影。在胡适勾画出“好人政府”的蓝图、引起舆论关注之际,借助“差不多”和《尝试集》,鲁迅和风头上的胡适开了一个小小玩笑,而在这戏谑背后,更隐伏着“知”/经验型... 详细信息

方玄绰的“差不多”说乃是鲁迅人生经验的结晶,是人互为奴隶的困境之缩影。在胡适勾画出“好人政府”的蓝图、引起舆论关注之际,借助“差不多”和《尝试集》,鲁迅和风头上的胡适开了一个小小玩笑,而在这戏谑背后,更隐伏着“知”/经验型思维与“行”/理念型思维的对立和颉颃。《端午节》主题从私域延伸至公域,在整体上呈现出弱虚构性与强观念性,这也可以作为理解鲁迅“家庭小说”的切口。

关键词： “差不多” 胡适实验主义家庭小说

在线全文

学校读者我要写书评

暂无评论

科幻现实主义的多重意涵

中国文学批评 2022年第3期 70-76,190页

作者：孟庆枢吉林外国语大学国际传媒学院长春130117

科幻现实主义这一命名意蕴丰富。科幻现实主义中的“现实主义”,意味着中国科幻文学以立体的视角宏观地把握现实,书写人类社会的整体性;“科幻”意味着筑梦、想象、求变意识,用科幻思考未来。从社会历史之维、技术之维来看,中国科幻现... 详细信息

科幻现实主义这一命名意蕴丰富。科幻现实主义中的“现实主义”,意味着中国科幻文学以立体的视角宏观地把握现实,书写人类社会的整体性;“科幻”意味着筑梦、想象、求变意识,用科幻思考未来。从社会历史之维、技术之维来看,中国科幻现实主义创作与社会现实密切相关,表现出强烈的忧患意识,关注科技发展对现实含义的拓展和变化,并深入反思人类文明的未来。中国科幻现实主义依托中国文化的深厚根基探究人的本质、揭示人和宇宙的关系,以自身独特的创作风格为认识和理解现实提供文学参考。

关键词：科幻现实主义命名社会历史之维科技之维

在线全文

学校读者我要写书评

暂无评论

为玄黄中国做注——论王景山的学术研究

首都师范大学学报（社会科学版） 2023年第4期 113-122页

作者：孟庆澍首都师范大学文学院

兼具第一代现代文学学者“在场感”和第二代现代文学学者重视文献的优长,王景山的学术研究具有突出的时代意识、社会意识和求真意识,是建基于过去、作用于当下、着眼于未来的,融合了历史感、现实感和人生经验的有生命厚度的研究。他之... 详细信息

兼具第一代现代文学学者“在场感”和第二代现代文学学者重视文献的优长,王景山的学术研究具有突出的时代意识、社会意识和求真意识,是建基于过去、作用于当下、着眼于未来的,融合了历史感、现实感和人生经验的有生命厚度的研究。他之所以坚持“去华崇实、实事求是”的治学精神,不是因为它是书本上大写的真理,而是因为它是自己这一代学人曲折坎坷的生命体验所凝成的共识。

关键词：王景山鲁迅研究文献求真意识