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13th International Conference on Measuring Technology and Mechatronics Automation (ICMTMA)

作者： Wang, Zilu Chi, Cheng Liu, Yang CAICT Inst Ind Internet & Internet Things Beijing Peoples R China

ISBN: (纸本)9781665438926

The identification and resolution are the key of industrial application management system. In order to improve the generality and efficiency of industrial application management system, a novel identification and resoluation method for industrial application management is proposed. This paper analyzes the requirements of industrial applications for identifier naming scheme, and establishes a functional architecture for software deployment.

关键词： Industrial apps identifiers coding scheme identification and resolution system of industrial network

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Uniform Distributed Source coding for the Multiple Access Wiretap Channel

Uniform Distributed Source Coding for the Multiple Access Wi...

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IEEE Conference on Communications and Network Security (CNS)

作者： Chou, Remi A. Bloch, Matthieu R. Georgia Inst Technol Sch Elect & Comp Engn Atlanta GA 30332 USA

ISBN: (纸本)9781479958900

We study the transmission of public and secret messages over the l-input multiple-access wiretap channel with deterministic encoders. Specifically, we assume that no additional source of randomness is available at the encoders and that public messages may be non-uniform and correlated. We develop a coding scheme that achieves information-theoretic security by combining existing constructions for wiretap codes with a distributed source code with nearly independent and nearly uniform encoder outputs.

关键词： information theory source coding telecommunication security coding scheme deterministic encoders information-theoretic security multiple access wiretap channel public messages transmission secret messages transmission wiretap codes Communication networks Communication system security Conferences Decoding Security Source coding source coding Communication system security labeling scheme telecommunication security networks(communications) Information Theory DEcoding ENCODER computer information security Telecommunications multiple access Security

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coding for Language Complexity: The Interplay Among Methodological Commitments, Tools, and Workflow in Writing Research

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WRITTEN COMMUNICATION 2018年第2期35卷 215-249页

作者： Geisler, Cheryl Simon Fraser Univ Interact Arts & Technol Vancouver BC Canada

coding, the analytic task of assigning codes to nonnumeric data, is foundational to writing research. A rich discussion of methodological pluralism has established the foundational importance of systematicity in the task of coding, but less attention has been paid to the equally important commitment to language complexity. Addressing the interplay among a commitment to language complexity, the selection of tools, and the construction of workflow, this article offers a framework of analytic tasks in coding. Three general purpose coding tools are explored: Excel, MAXQDA, and Dedoose. This exploration suggests that how four aspects of analysis should be supported in order to manage language complexity: code restructuring, segmentation in advance of coding, use of a full coding scheme, and retrieval of full context by code. This analysis is intended to help writing researchers choose tools and design workflow to support coding work consistent with our commitment to language in its full complexity.

关键词： methodological commitment language complexity data segmentation data retrieval in context coding scheme CAQDAS content analysis qualitative analysis big data

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Father-child activation relationship in the Brazilian context

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EARLY CHILD DEVELOPMENT AND CARE 2019年第5期189卷 835-845页

作者： Bueno, Rovana Kinas Vieira, Mauro Luis Crepaldi, Maria Aparecida Xavier Faraco, Ana Maria Fed Univ Santa Catarina UFSC Dept Psychol Florianopolis SC Brazil

The activation relationship is an emotional bond between caregiver and child that encourages child openness to the world through stimulation and discipline. This study aimed to analyse the father-child activation relationship in the Brazilian context through the Risky Situation. Twelve dyads have been observed: six father-boy and six father-girl dyads at preschool age. The results showed greater activation of boys compared to girls. Such results are analysed according to the Activation Relationship Theory. Despite sample size limitation, results consistently support the findings of other studies conducted in other contexts.

关键词： Activation relationship Risky Situation father-child relationships preschool observational procedure coding scheme

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A Test of the Cognitive Load Hypothesis: Investigating the Impact of Number of Nonverbal Cues Coded and Length of coding Session on Observer Accuracy

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COMMUNICATION REPORTS 2007年第1期20卷 11-23页

作者： La France, Betty H. Heisel, Alan D. Beatty, Michael J. Department of Communication Northern Illinois University DeKalb IL 60115 USA

In their meta-analysis investigating the relationship between extraversion and nonverbal behavior La France, Heisel, and Beatty (2004) found a substantial negative correlation between effect size and sample size, which they explained using the cognitive load hypothesis. The cognitive load hypothesis predicts that increases in coding scheme complexity result in greater opportunities for observer error. To test this hypothesis, the impact of coding scheme complexity on observer error was assessed via varying the number of nonverbal cues coded and the length of observational coding session. The decision to increase the number of nonverbal cues observers coded created 26% more errors, and over time observers made 10% more errors.

关键词： coding scheme Cognitive Load Meta-analysis Nonverbal Communication

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A Novel Signal Detection Method Based on Multivariate Test Statistics for Ambient Backscatter Communications

A Novel Signal Detection Method Based on Multivariate Test S...

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IEEE/CIC International Conference on Communications in China (ICCC)

作者： Wang, Jing Ren, Pinyi Xu, Dongyang Lu, Lei Xi An Jiao Tong Univ Shaanxi Smart Networks & Ubiquitous Access Res Ct Sch Informat & Commun Engn Xian Peoples R China

ISBN: (数字)9781665484800

ISBN: (纸本)9781665484800

Ambient backscatter technology is an important technology of the Internet of Things (IoT), which can use ambient radio frequency (RF) sources to communicate between passive devices. However, most studies on the signal detection problem of ambient backscatter communication are based on the fact that tags have two backscatter states, reflective and non-reflective. In this paper, we present a signal detection scheme for ambient backscatter systems which the tag can backscatter in three states. First, we design a maximum a posteriori (MAP) detector to detect the multiple symbols sent by the tag using the continuously received signals. Then we propose a coding scheme that reduces the bit error rate (BER) and improves the system throughput. Furthermore, we derive expressions of detection threshold and BER, and give the system throughput under different coding schemes. At last, experimental simulations are conducted to prove our study.

关键词： ambient backscatter coding scheme signal detection bit error rate (BER)

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Streaming data over fading wireless channels: The Diversity-Multiplexing Tradeoff

Streaming data over fading wireless channels: The Diversity-...

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IEEE International Symposium on Information Theory (ISIT)

作者： Khisti, Ashish Draper, Stark C. Univ Toronto ECE Dept Toronto ON M1B 5P1 Canada Univ Wisconsin ECE Dept Madison WI 53076 USA

ISBN: (纸本)9781457705953

We study delay constrained sequential streaming over block fading channels. The transmitter observes a stream of messages, one message in each coherence block, and the receiver needs to output a sequence of messages, each with a fixed delay of T coherence blocks. We characterize the associated diversity-multiplexing tradeoff (DMT) for this model. The proposed coding scheme involves a semi-infinite random Gaussian tree-code and a sequential decision directed decoder. The converse applies an outage amplification argument that exploits the delay constraint to amplify the error event associated with a single message to an entire sequence of messages.

关键词： Coherence Decoding Delay Encoding Error probability Fading Wireless communication block fading channels channel coding coding scheme data streaming delay constrained sequential streaming delay constraint diversity-multiplexing tradeoff fading channels fading wireless channels media streaming multimedia streaming multiplexing random codes semiinfinite random Gaussian tree-code sequential decision directed decoder sequential decoding transmitter tree codes

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Efficient Two-Write WOM-Codes

Efficient Two-Write WOM-Codes

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IEEE Information Theory Workshop (ITW)

作者： Yaakobi, Eitan Kayser, Scott Siegel, Paul H. Vardy, Alexander Wolf, Jack K. Univ Calif San Diego La Jolla CA 92093 USA

ISBN: (纸本)9781424482641

A Write Once Memory (WOM) is a storage medium with binary memory elements, called cells, that can change from the zero state to the one state only once. Examples of WOMs are punch cards, optical disks, and more recently flash memories. A t-write WOM-code is a coding scheme for storing t messages in n cells in such a way that each cell can change its value only from the zero state to the one state. The WOM-rate of a t-write WOM-code is the ratio of the total amount of information written to the WOM in t writes to the number of cells. In this paper we present a family of 2-write WOM-codes. It is shown how to construct from each linear code C a 2-write WOM-code. Then, we find 2-write WOM-codes that improve the best known WOM-rate with two writes. This scheme is proved to be capacity achieving when the parity check matrix of the linear code C is chosen uniformly at random. Finally, we show how to take advantage of 2-write WOM-codes in order to construct codes for the Blackwell channel.

关键词： Blackwell channel WOM code binary memory element coding scheme flash memory linear code linear codes parity check matrix storage medium write once memory

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An empirical evaluation of a Reflective Writing Framework (RWF) for Reflective Writing in Computer Science Education

An empirical evaluation of a Reflective Writing Framework (R...

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IEEE Frontiers in Education Conference (FIE)

作者： Alrashidi, Huda Ullman, Thomas Daniel Joy, Mike Univ Warwick Comp Sci Dept Coventry W Midlands England Open Univ Inst Educ Technol Milton Keynes Bucks England

ISBN: (纸本)9781728189611

Reflective writing is vital in learning professional skills and particularly in Computer Science (CS). However, there appears to be a lack of literature relating to a reliable of the current reflective writing frameworks used for CS education. This paper describes a novel Reflective Writing Framework (RWF) that has been applied to the manual content analysis of CS students' reflective writings. The paper aims to empirically examine this RWF in terms of reflection indicators and levels that can be manually assessed by raters. The results of this manual content analysis showed empirically that the coding scheme of the RWF is valid and reliable. The results were that the inter-rater reliability (IRR) of the overall coding scheme of the RWF increased from 0.5 to 0.8 in pilot tests and ranged between 0.40 and 0.75 in terms reflection indicators and levels;substantially, this means ranged from moderate to substantial agreement. This research contributes to CS education an RWF that can be reliably annotated and was validated by CS experts.

关键词： Computer Science Education Reflective writing Framework coding scheme Annotation

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MIMO Broadcast Channel with Arbitrarily Varying Eavesdropper Channel: Secrecy Degrees of Freedom

MIMO Broadcast Channel with Arbitrarily Varying Eavesdropper...

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54th Annual IEEE Global Telecommunications Conference (GLOBECOM)

作者： He, Xiang Khisti, Ashish Yener, Aylin Penn State Univ Dept Elect Engn University Pk PA 16802 USA Univ Toronto Dept Elect & Comp Engn Toronto ON M5S 3G4 Canada

ISBN: (纸本)9781424492688

A two-receiver MIMO broadcast-wiretap channel is considered where the channel state of the eavesdropper is arbitrarily varying. It is assumed that the eavesdropper knows this channel state perfectly whereas the legitimate nodes have no knowledge of it. It is further assumed that the eavesdropper experiences no additive noise. The channel between the transmitter and the two legitimate receivers is a constant MIMO Gaussian broadcast channel. This paper establishes the secrecy degrees of freedom region for transmitting a common-confidential message as well as a private-confidential message to each receiver. It is observed that a straightforward extension of single user random binning does not achieve the optimal secrecy degrees of freedom (s.d.o.f.) region. The proposed coding scheme that achieves the s.d.o.f. region involves simultaneous diagonalization of the channel matrices of the two legitimate receivers using the generalized singular value decomposition (GSVD) as well as a particular structured binning across codebooks that minimizes the rate of the fictitious message. While the focus is on achieving weak secrecy for ease of exposition, an outline is provided on how the results can be extended for achieving strong secrecy.

关键词： Decoding Gaussian broadcast channel Gaussian channels IEEE Communications Society MIMO MIMO communication Receivers SVD Transmitting antennas arbitrarily varying eavesdropper channel broadcast channels channel matrices channel state coding scheme common-confidential message generalized singular value decomposition legitimate nodes legitimate receivers private-confidential message radio receivers secrecy degrees of freedom region single user random binning singular value decomposition structured binning two-receiver MIMO broadcast-wiretap channel

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