检索结果-内蒙古大学图书馆

On the coding capacity of reverse-complement and palindromic duplication-correcting codes

Designs, Codes, and Cryptography 2025年 1-20页

作者： Yohananov, Lev Schwartz, Moshe Department of Computer Science MIGAL – Galilee Research Institute Kiryat Shmona 11016 Israel Department of Electrical and Computer Engineering McMaster University Hamilton L8S 4K1 ON Canada School of Electrical and Computer Engineering Ben-Gurion University of the Negev Beer Sheva 8410501 Israel

We derive the coding capacity for duplication-correcting codes capable of correcting any number of duplications. We do so both for reverse-complement duplications, as well as palindromic (reverse) duplications. We show that except for duplication-length 1, the coding capacity is 0. When the duplication length is 1, the coding capacity depends on the alphabet size, and we construct optimal codes. © The Author(s) 2025.

关键词： coding capacity Error-correcting codes Palindromic duplication Reverse-complement duplication String-duplication systems

来源：评论

学校读者我要写书评

暂无评论

Quantitative analysis of the coding capacity of C. elegans using RNA-Seq data

Quantitative analysis of the coding capacity of C. elegans u...

引用

作者： Matthew J Douglas SIMON FRASER UNIVERSITY

学位级别：硕士

Annotating the genome of the nematode Caenorhabditis elegans has been an ongoing challenge for the last twenty years. Studies have leveraged high-throughput RNA- sequencing (RNA-Seq) to uncover evidence for thousands of novel splicing events, indicating that the current annotations are far from complete. Yet, there is some uncertainty whether the many rare events represent functional transcripts, or simply biological noise. We developed a method that leverages the wealth of publicly available RNA-Seq data to perform a quantitative evaluation of the completeness of the current C. elegans genome annotation. We identified 134,949 and 204,812 novel high-quality introns and exons, respectively. We find that many introns and exons are rarely expressed overall, but strongly expressed at specific developmental stages suggesting a functional role. We assembled a high-quality set of 72,274 protein-coding transcripts to show that only a fraction of the coding transcriptome of C. elegans is represented in the current genome annotation.

关键词： coding capacity alternative splicing Caenorhabditis elegans RNA-Seq transcriptome bioinformatics

来源：评论

学校读者我要写书评

暂无评论

A Novel Design Approach for Co/Cross-Polarizing Chipless RFID Tags of High coding capacity

IEEE JOURNAL OF RADIO FREQUENCY IDENTIFICATION

引用

IEEE JOURNAL OF RADIO FREQUENCY IDENTIFICATION 2017年第2期1卷 135-143页

作者： Khaliel, Maher El-Awamry, Ahmed Megahed, Abdelfattah Fawky Kaiser, Thomas Duisburg Essen Univ Dept Digital Signal Proc D-47057 Duisburg Germany

This paper presents a novel frequency coded chipless RFID tag, which exploits the backscattered co-polarized and cross-polarized responses from a tag illuminated with a linear polarized wave. Consequently, the tag-ID is configured in two orthogonal planes. The frequency notches are encoded in the co-polarization plane and the re-radiation peaks are encoded in the cross-polarization plane. Therefore, the co/cross-polarizing Notch/Peak modulation scheme presents a novel criterion for maximizing the coding capacity of the chipless RFID systems. Moreover, the cross-polarized response enhances the tag detection in a real environment. The proposed tag and the associated physical modulation scheme are validated using EM simulations and measurements.

关键词： Chipless RFID physical modulation co/cross-polarizing Notch/Peak coding capacity

来源：评论

学校读者我要写书评

暂无评论

Platform Tolerant, High Encoding capacity Dipole Array-Plate Chipless RFID Tags

引用

IEEE ACCESS 2019年 7卷 138707-138720页

作者： Svanda, Milan Polivka, Milan Havlicek, Jaroslav Machac, Jan Werner, Douglas H. Czech Tech Univ Fac Elect Engn Dept Electromagnet Field Prague 16627 Czech Republic Penn State Univ Dept Elect Engn CEARL University Pk PA 16802 USA

In this paper, we first carry out an in-depth review of the performance parameters of frequency-domain chipless RFID transponders in terms of their spatial density, spectral capacity, and comprehensive encoding capacity (bit/lambda(2)/GHz) comprising both spatial and spectral performance, and platform tolerance. Secondly, we theoretically and numerically investigate the recently introduced and promising concept of the platform-tolerant chipless RFID transponder based on a detuned dipole array-plate that provides high encoding capacity. We propose, fabricate and measure a 20-bit transponder consisting of an array of 20 detuned dipoles closely coupled to a 60 x 60 mm(2) metallic plate. The radar cross section at the level of -15 dBsm exhibits reliably recognizable minima corresponding to individual dipole resonances. When compared to other published frequency-domain chipless RFID transponders, the encoding capacity reaches 47.4 bit/lambda(2)/GHz, which constitutes one of the highest values, while achieving a concurrently high level of radar cross section (RCS) reflection response and platform tolerance performance. The measurements confirm very good performance parameters in the cases when the transponder is attached to various packaging materials, such as cardboard, plastic, wood, metal or a human body phantom. The essential benefits of the presented solution include a very good frequency and amplitude stability in the RCS response, which enables a reliable reading of encoded information (if zero bits are coded). The double layer metallization represents an inherent property of the proposed solution, which is a necessary trade-off for high encoding capacity and contemporary platform tolerance.

关键词： Chipless radiofrequency identification coding capacity coupled modes theory dipole scatterer electromagnetic band-gap high impedance surfaces platform tolerant tag quality factor radar cross section

来源：评论

学校读者我要写书评

暂无评论

coding Theorem and Converse for Abstract Channels With Time Structure and Memory

引用

IEEE TRANSACTIONS ON INFORMATION THEORY 2018年第7期64卷 4993-5016页

作者： Mittelbach, Martin Jorswieck, Eduard A. Tech Univ Dresden Chair Commun Theory Commun Lab D-01062 Dresden Germany

A coding theorem and converse are proved for a large-class of abstract stationary channels with time structure including the result by Kadota and Wyner (1972) on continuoustime real-valued channels as special cases. As main contribution, the coding theorem is proved for a significantly weaker condition on the channel output memory - called total ergodicity with respect to finite alphabet block-memoryless input sources - and under a crucial relaxation of the measurability requirement for the channel. These improvements are achieved by introducing a suitable characterization of information rate capacity. It is shown that the psi-mixing output memory condition used by Kadota and Wyner is quite restrictive and excludes important channel models, in particular for the class of Gaussian channels. In fact, it is proved that for Gaussian (e.g., fading or additive noise) channels, the psi-mixing condition is equivalent to finite output memory. Furthermore, it is demonstrated that the measurability requirement of Kadota and Wyner is not satisfied for relevant continuous-time channel models such as linear filters, whereas the condition used in this paper is satisfied for these models. Moreover, a weak converse is derived for all stationary channels with time structure. Intersymbol interference as well as input constraints are taken into account in a general and flexible way, including amplitude and average power constraints as special case. Formulated in rigorous mathematical terms complete, explicit, and transparent proofs are presented. As a side product a gap in the proof of Kadota and Wyner by a counterexample - is closed by providing a corrected proof of a lemma on the monotonicity of some sequence of normalized mutual information quantities. An operational perspective is taken, and an abstract framework is established, which allows to treat discrete-and continuous-time channels with (possibly infinite input and output) memory and arbitrary alphabets simultaneously in a un

关键词： Channels with memory coding capacity coding theorem continuous-time channels discrete-time channels general alphabets infinite memory mixing conditions Shannon theory weak converse

来源：评论

学校读者我要写书评

暂无评论

High-speed data acquisition of the reader of the SAW RFID system

引用

IET SCIENCE MEASUREMENT & TECHNOLOGY 2019年第8期13卷 1163-1169页

作者： Chen, Zhijun Jia, Hao Chen, Tao Wang, Xinchen Guo, Jiajia Cai, Pinggen Nanjing Univ Aeronaut & Astronaut Coll Automat Engn Dept Measurement & Testing Engn Nanjing 211106 Jiangsu Peoples R China Zhejiang Univ Technol Coll Sci Dept Phys Hangzhou 310014 Zhejiang Peoples R China

The measurement of the echo time delays and phases of the surface acoustic wave (SAW) tag by the corresponding reader should be more accurate with the increase of the coding capacity, and the design of the high-speed data acquisition module (DAM) is the key factor for the improvement of the reader performance. Aiming at the large capacity SAW tag, which combines pulse time delay and phase coding, the radio-frequency (RF) band-pass sampling and digital quadrature demodulation scheme is utilised for the reader design. The design of the high-speed DAM includes the analysis, calculation and determination of the sampling frequency, the sampling clock design with cascaded phase-locked loop structure and the driver circuit design etc. Finally, the SAW RFID system is established, and the time delays and phases of the tag reflectors are tested. The measurement results show the effectiveness of the high-speed DAM of the reader.

关键词： demodulation data acquisition radiofrequency identification signal sampling phase coding quadrature amplitude modulation clocks surface acoustic wave signal processing SAW RF identification system surface acoustic wave tag coding capacity high-speed data acquisition module reader performance capacity SAW tag pulse time delay phase coding radio-frequency band-pass sampling digital quadrature demodulation scheme reader design sampling clock design cascaded phase-locked loop structure driver circuit design tag reflectors sampling frequency determination high-speed DAM design echo time delay measurement

来源：评论

学校读者我要写书评

暂无评论

A characterization of solvability for a class of networks

引用

Science China(Information Sciences) 2012年第4期55卷 747-754页

作者： YUAN Chen & KAN HaiBin Shanghai Key Lab of Intelligent Information Processing,School of Computer Science,Fudan University,Shanghai 200433,China 1. Shanghai Key Lab of Intelligent Information Processing School of Computer Science Fudan University Shanghai 200433 China

In this paper,we find that Property P can be generalized to characterize the solvability of a kind of networks with any number of sources,thus partially answering the open problem as to whether there are properties similar to Property P to characterize the solvability of some *** an application,for a given integer n,we construct such a solvable network that has no solvable solution if its alphabet size is less than n.

关键词： capacity coding capacity network coding solvability

来源：评论

学校读者我要写书评

暂无评论

CLONING AND CHARACTERIZATION OF RESTRICTION FRAGMENTS OF PHAGE-MU DNA

引用

FEMS MICROBIOLOGY LETTERS 1983年第3期20卷 369-374页

作者： STAUFENBIEL, M SCHUMANN, W UNIV CONSTANCE FAK BIOL D-7750 CONSTANCE FED REP GER

TheEcoRI-A and B, theBamHI-C and the twoEcoRI-BamHI restriction fragments of transposing phage Mu DNA were inserted into vector plasmids pRSF2124 and pBR322. Quantitative marker rescue experiments for five genes located on theEcoRI-A fragment revealed complementation of phages carrying amber mutations in genesC, E, H, FandL. The in vitro coding capacity of the recombinant plasmids was assayed in a DNA-directed protein synthesizing system.

关键词： Phage Mu recombinant plasmids marker rescue complementation DNA-directed protein synthesis coding capacity

来源：评论

学校读者我要写书评

暂无评论

Identification of evolutionarily conserved non-AUG-initiated N-terminal extensions in human coding sequences

引用

NUCLEIC ACIDS RESEARCH 2011年第10期39卷 4220-4234页

作者： Ivanov, Ivaylo P. Firth, Andrew E. Michel, Audrey M. Atkins, John F. Baranov, Pavel V. Univ Coll Cork BioSci Inst Cork Ireland Univ Utah Dept Human Genet Salt Lake City UT 84112 USA Univ Cambridge Dept Pathol Cambridge CB2 1QP England Univ Coll Cork Dept Biochem Cork Ireland

In eukaryotes, it is generally assumed that translation initiation occurs at the AUG codon closest to the messenger RNA 5' cap. However, in certain cases, initiation can occur at codons differing from AUG by a single nucleotide, especially the codons CUG, UUG, GUG, ACG, AUA and AUU. While non-AUG initiation has been experimentally verified for a handful of human genes, the full extent to which this phenomenon is utilized-both for increased coding capacity and potentially also for novel regulatory mechanisms-remains unclear. To address this issue, and hence to improve the quality of existing coding sequence annotations, we developed a methodology based on phylogenetic analysis of predicted 5' untranslated regions from orthologous genes. We use evolutionary signatures of protein-coding sequences as an indicator of translation initiation upstream of annotated coding sequences. Our search identified novel conserved potential non-AUG-initiated N-terminal extensions in 42 human genes including VANGL2, FGFR1, KCNN4, TRPV6, HDGF, CITED2, EIF4G3 and NTF3, and also affirmed the conservation of known non-AUG-initiated extensions in 17 other genes. In several instances, we have been able to obtain independent experimental evidence of the expression of non-AUG-initiated products from the previously published literature and ribosome profiling data.

关键词： genes messenger RNA start codon mRNA gene conservation regulatory mechanism coding capacity protein-coding sequence evolutionary signature coding sequence annotation Translation Initiation Initiator Codon Open Reading Frames biochemical evolution AUU Codons Code capacity AUG Messenger RNA

来源：评论

学校读者我要写书评

暂无评论

NUCLEOTIDE-SEQUENCE OF THE TRANSFORMING HINDIII-G FRAGMENT OF ADENOVIRUS TYPE-5 DNA - REGION BETWEEN MAP POSITIONS 4.5 (HPAI SITE) AND 8.0 (HINDIII SITE)

引用

GENE 1979年第1期6卷 75-90页

作者： MAAT, J VANORMONDT, H Laboratory for Physiological Chemistry Sylvius Laboratories Wassenaarseweg 72 2333 AL Leiden The Netherlands

The nucleotide sequence of the region between map positions 4.5 (HpaI-site) and 8.0 (HindIII-site) of adenovirus type 5 (Ad5) DNA was determined. This stretch of DNA is part of the transforming HindIII-G fragment, which is 2809 nucleotides long. The sequenced segment had a long open reading frame for protein biosynthesis, starting 23 nucleotides from the HpaI-site and extending all the way to the HindIII-G site, which could code for a protein of at least 44,000 daltons. The possible correlation between the coding capacity of the HindIII-G fragment and the transforming proteins specified by it are discussed in light of the recent data on the splicing of early mRNA.

关键词： cell transformation chain terminators coding capacity DNA sequence Maxam-Gilbert technique RNA splicing

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：