3,508 results
Search Results
2. 74‐2: Invited Paper: Highly Reliable Dielectric Interlayers for Flexible Displays and e‐Paper.
- Author
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Yamamoto, Atsuko, Yokoyama, Daishi, Takahashi, Megumi, Fuke, Takashi, Shibayama, Seishi, Yamasaki, Akira, and Lin, Cho-Yin
- Subjects
FLEXIBLE display systems ,TACTILE sensors ,DIELECTRICS ,DATA transmission systems ,HYBRID solar cells ,USER experience ,DURABILITY - Abstract
With the strong increase of mobile data‐communication needs, mobile devices become more important than ever. To be able to provide the users the best experience, display sizes will need to increase while portability needs to be maintained. Flexible, foldable and rollable displays are serving these emerging user needs. This challenges every layer in the display, requiring the display panel to become thinner and thinner while maintaining robustness and reliability. This paper will talk about highly reliable photo patternable interlayers in TFT stacks and touch sensor layers based on inorganic‐organic hybrid polymers. A novel solution, that improves process‐ability for flexible display devices. In addition, hybrid polymer‐based films provide good process durability, higher transparency, and higher environmental durability. Therefore, these new formulations are a key enabler for foldable and rollable OLED and e‐paper displays. [ABSTRACT FROM AUTHOR]
- Published
- 2022
- Full Text
- View/download PDF
3. 64‐3: Invited Paper: Latest Developments Liquid Crystals for RF Applications.
- Author
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Jost, Matthias, Wittek, Michael, and Schroth, Dieter
- Subjects
LIQUID crystals ,DATA transmission systems ,TELECOMMUNICATION ,ANTENNAS (Electronics) ,WIRELESS communications - Abstract
Driven by the need for new affordable wireless data communication technologies, special liquid crystals have been developed and optimized for use in microwave components above 10 GHz. As tunable dielectrics, they pave the way for continuously tunable antennas for SATCOM and wireless 5G/6G applications either fixed at home or on‐the‐move. This presentation gives an insight into the current material development with special focus on the application in transparent antennas for fixed 5G access. Sunlight stability tests for an equivalent device lifetime of 5 years were conducted resulting in yellowing index values of < 4, being 2.5 times less than the required threshold. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
4. 19.3: Invited Paper: For ID application using no battery IoT system.
- Author
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Wang, QuanZhong, Bi, ZhenSheng, Chen, Shuo, and Leng, ChangLin
- Subjects
NEAR field communication ,INTERNET of things ,DATA warehousing ,IDENTIFICATION cards ,DATA transmission systems ,IMAGE processing - Abstract
We develope new application, in conjunction with the Internet of things hardware and software technology, E‐Paper will be used in the use of official ID Card to research, in particular on how to use low‐resolution display of human head color processing algorithms, on NFC passive driver EPD display and on‐line storage and operation data transmission. [ABSTRACT FROM AUTHOR]
- Published
- 2022
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- View/download PDF
5. Advanced microprocessor optimization methods for the Internet of Things.
- Author
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Kadry, Seifedine, Zhang, Yu‐Dong, and Li, Shuai
- Subjects
INTERNET of things ,DIGITAL-to-analog converters ,WIRELESS communications ,AD hoc computer networks ,MICROPROCESSORS ,VEHICULAR ad hoc networks ,DATA transmission systems - Abstract
With the advent of the Internet of Things (IoT), accomplishing specific tasks in an interconnected network consisting of integrated computational devices has become simple. The paper titled I "Improved perturbation technique privacy-preserving rotation-based condensation algorithm for privacy preserving in big data stream using Internet of Things" i is based on a privacy-preserving rotation-based condensation algorithm consisting of geometric transformation. The paper titled I "LAMSTAR: For IoT-based face recognition system to manage the safety factor in smart cities" i develop an effective and artificial intelligence IoT-based facial expression detection system is implemented to predict and match the face from the database. [Extracted from the article]
- Published
- 2020
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6. Wireless video streaming with TCP and simultaneous MAC packet transmission (SMPT)<FNR></FNR><FN>A shorter preliminary version of this paper has appeared in the Proceedings of the International Conference on Third Generation Wireless and Beyond (3GWireless), San Francisco, CA, May 2002, 755–760. </FN>
- Author
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Fitzek, Frank H. P. and Reisslein, Martin
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STREAMING technology , *DATA transmission systems , *WIRELESS communications , *CODE division multiple access , *SPREAD spectrum communications - Abstract
Video streaming is expected to account for a large portion of the traffic in future networks, including wireless networks. It is widely accepted that the user datagram protocol (UDP) is the preferred transport protocol for video streaming and that the transmission control protocol (TCP) is unsuitable for streaming. The widespread use of UDP, however, has a number of drawbacks, such as unfairness and possible congestion collapse, which are avoided by TCP. In this paper we investigate the use of TCP as the transport layer protocol for streaming video in a multi-code CDMA cellular wireless system. Our approach is to stabilize the TCP throughput over the wireless links by employing a recently developed simultaneous MAC packet transmission (SMPT) approach at the link layer. We study the capacity, i.e. the number of customers per cell, and the quality of service for streaming video in the uplink direction. Our extensive simulations indicate that streaming over TCP in conjunction with SMPT gives good performance for video encoded in a closed loop, i.e. with rate control. We have also found that TCP is unsuitable (even in conjunction with SMPT) for streaming the more variable open-loop encoded video. Copyright © 2004 John Wiley & Sons, Ltd. [ABSTRACT FROM AUTHOR]
- Published
- 2004
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7. Performance analysis of a person-based addressing scheme for improved mobility management<FNR></FNR><FN>Parts of this paper were presented at the IEEE International Performance, Computing, and Communications Conference, Phoenix, Arizona, U.S.A., 10–12 February 1999 </FN>
- Author
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Goyal, Anupam and Sundareshan, Malur K.
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WIRELESS communications , *TELECOMMUNICATION systems , *PERSONAL communication service systems , *DATA transmission systems , *DIGITAL communications - Abstract
The concept of a person-based number is attractive due to several pressing demands in implementation of current wireless communication systems. Some of these are: sudden proliferation in number of area codes; the need for freedom from number changes due to changes in service provider, location, or area code; and demand for improved and integrated communication service for users. Some important factors that determine the efficiency of a mobility management scheme include fewer number of times that locations need to be updated, reduced amount of overhead data that represents mobility related information, and efficient storage mechanisms that allow for fast storage and retrieval of this information. In this paper, we shall outline a mobility management scheme that provides a globally unique personal number and offers important benefits in regard to the issues cited above. For an efficient implementation of such a scheme however, an investigation of its performance is required in order to estimate signaling traffic and signaling delays. This paper will focus on some recent studies conducted on an analysis of this scheme by using query and update operations as the metrics for determining average call delay and control data storage and transmission requirements. A comparative analysis is also performed with equivalent cases of query and update in the IS-41 system. This analysis provides a valuable tool to determine network management requirements in the implementation of a person-based number scheme. Copyright © 1999 John Wiley & Sons, Ltd. [ABSTRACT FROM AUTHOR]
- Published
- 1999
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8. Blockchain and Its Application to Manage the Covid‐19 Pandemic: A Literature Review.
- Author
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Turino, Maria Antonietta, Rinaldi, Marta, and Macchiaroli, Roberto
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COVID-19 ,COVID-19 pandemic ,PRECISION farming ,LITERATURE reviews ,BLOCKCHAINS ,SUPPLY chain management ,DATA transmission systems - Abstract
At the end of 2019, a severe respiratory syndrome named COVID‐19 is started to be transmitted in the world and it has rapidly spread to a global pandemic. Every day, a series of data are collected for real‐time monitoring of the development of this pandemic. The data validation and the verification are becoming very important to manage the pandemic and give recommendations to the people. Nevertheless, sometimes, it is not possible to guarantee the truthfulness of such data and some information may be lost during collection. Due to its characteristics, the Blockchain technology can become an important support to face the COVID‐19 pandemic. In this regard, the aim of this research is to propose a literature review to understand how the blockchain technology has been used for health care and supply chain management to guarantee an efficient tracing, tracking, and monitoring solution, ensure a transparent and safe data transmission, and to delineate the emerging future research directions. [ABSTRACT FROM AUTHOR]
- Published
- 2022
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9. A bridged architecture for two-way data communications over cable TV networks<FNR></FNR><FN>Work done while the author was with Computer and Communications Research Labs, Industrial Technology Research Institute (ITRI). A preliminary version of this paper was presented in IEEE INFOCOM'97, Kobe, Japan. </FN>
- Author
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Jon Chiung-Shien Wu
- Subjects
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CABLE television , *TELEVISION , *BANDWIDTHS , *DATA transmission systems , *MODEMS - Abstract
The traditional cable TV network has recently emerged as a promising infrastructure for high-speed data communications such as the Internet and multimedia. A cable TV network may cover a wide range of geographical area that thousands of subscribers live in or work at. However, this broad service range also brings some problems such as bandwidth congestion due to too many users, and the overhead in the design of access protocol. This article presents a bridged architecture that can increase the bandwidth re-usability and data transmission reliability over the cable TV network. It first describes the method of bridging the cable TV networks and then gives the design of a cable bridge which partitions the cable segment into several subnetworks. For load-balancing and fairness among subnetworks, a prioritized queuing scheme with a numerical analysis will be also described. Copyright © 2000 John Wiley & Sons, Ltd. [ABSTRACT FROM AUTHOR]
- Published
- 2000
- Full Text
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10. P‐4.5: A video data compression algorithm based on bit plane.
- Author
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Chengyu, Wang and Limin, Yan
- Subjects
VIDEO compression ,DATA compression ,ALGORITHMS ,IMAGE compression ,RANGE of motion of joints ,DATA transmission systems ,STATISTICS - Abstract
High resolution and high refresh rate increase the pressure of wide transmission. Usually, video compression is used to solve this problem. However, traditional video compression methods cannot be performed in bit‐plane, which will increase the cost of storage area. For this reason, this paper first introduces a bit just noticeable difference (BJND) model based on bit‐plane. By analyzing the relationship between the bit‐plane, frequency and eccentricity, the bit just noticeable difference threshold of viewpoint is calculated. Finally, the just noticeable difference model applied to bit‐plane is obtained. Then this paper proposes a video compression scheme based on bit motion estimation algorithm, which optimizes the search range of motion estimation into two small rhombuses of time dimension and gray‐scale dimension. According to human visual system and probability statistical analysis, supplementary matching blocks are added to replace residual data, so that the compression ratio will be constant. The experimental results show that the proposed scheme has the best comprehensive effect on the compression of the lower five‐bit plane. The compression ratio is 1.385, the data transmission is constant, and there is no obvious difference between the restored image and the original image, which conforms to the intuitive perception of the human eye. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
11. Laserjet Printed Micro/Nano Sensors and Microfluidic Systems: A Simple and Facile Digital Platform for Inexpensive, Flexible, and Low‐Volume Devices.
- Author
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Bamshad, Arshya and Cho, Hyoung Jin
- Subjects
DIGITAL technology ,PLASTIC films ,DETECTORS ,MICROFLUIDIC devices ,ENVIRONMENTAL monitoring ,DATA transmission systems - Abstract
A facile and digital do‐it‐yourself technique is proposed to fabricate inexpensive sensors on flexible substrates (paper, cloth, and plastic film). A set of office‐grade equipment (i.e., laserjet printer, thermal laminator, computer‐aided paper cutter), and commercially available supplies (i.e., baking wax paper, furniture restoration metal‐leaf) are used. Forming electrodes through traditional printing and defining a fluidic confinement region through crafting practice enable fabrication of a wide range of devices without requiring customized specialty instruments, costly infrastructure, and complicated fabrication steps, unlike previously introduced methods. Three different levels of experiments are designed to assess the comprehensiveness and responsiveness of the proposed method to the needs of existing research fields. The performances of the fabricated features at each level are evaluated to cover various application domains in environmental monitoring and biomedical diagnostics utilizing conductometric, colorimetric, biochemical, and chemoresistive detection principles. Devices with varying size of features, from nanometers to centimeters, are fabricated and characterized. This method provides an alternative route to decentralized production of low‐cost flexible sensors and other devices, with a minimal step, time, and facilities. The operation of such devices is simple and can be further empowered by smartphones for data analysis and transmission. [ABSTRACT FROM AUTHOR]
- Published
- 2021
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12. Digitally Driven Micro‐display System Based on Bit‐plane Compression.
- Author
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Song, Yuansheng, Chen, Yuansheng, Chen, Wendong, Mu, Tingzhou, and Ji, Yuan
- Subjects
DATA transmission systems ,VIRTUAL reality ,DISPLAY systems ,VIDEO coding ,COMPUTER monitors - Abstract
The requirements for the resolution and refresh rate of micro‐displays in virtual reality applications are getting higher and higher. High resolution and high refresh rates mean that massive amounts of data will be transmitted, which will undoubtedly put tremendous pressure on bandwidth. To solve this problem, this paper considers the application scenarios of digitally driven micro‐displays in the field of virtual reality and proposes a compression scheme based on bit‐plane. On the one hand, the traditional just noticeable difference model is improved. A just noticeable difference model suitable for bit‐plane and virtual reality applications is established. On the other hand, combined with the correlation of video data, white block skipping encoding is optimized to achieve bit‐plane compression. Based on the proposed scheme, this paper builds a digitally driven micro‐ display system based on bit‐plane compression with FPGA as the core. The effectiveness of the system is verified by lighting a digitally driven silicon‐based OLED micro‐display. The experimental results show that the digitally driven micro‐display system based on bit‐plane compression effectively improves the compression efficiency and reduces the transmission data. The display effect is good, which meets the needs of virtual reality applications. [ABSTRACT FROM AUTHOR]
- Published
- 2020
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13. Security and privacy solutions in edge envisioned connected things environment.
- Author
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Aujla, Gagangeet Singh, Kumar, Neeraj, Sikdar, Biplab, and Choo, Kim‐Kwang Raymond
- Subjects
TRANSMITTERS (Communication) ,ARTIFICIAL intelligence ,DATA transmission systems ,DENIAL of service attacks ,BODY area networks ,MOBILE computing - Abstract
BLOCKCHAIN AS A SERVICE FOR SECURITY AND PRIVACY The limited resources in IoT-edge ecosystem leads to several challenges for the adoption of blockchain technology in distributed applications. The fifteenth paper titled " I Integration of Internet of Things (IoT) and Blockchain towards Portability and Low-Energy Consumption i " by Maitra et al proposes a lightweight consensus algorithm known as Proof of authentication that avoids the computationally expensive traditions consensus mechanism. The fifth paper titled " I ECBCM: A prestige-based edge computing blockchain security consensus model i " by Xuan et al proposes a prestige-based edge computing blockchain security consensus model that solves the issue of excessive resource consumption in the conventional consensus algorithms. The tenth paper titled " I Edge-Based Blockchain-Enabled Anomaly Detection for Insider Attack Prevention in the Internet of Things i " by Sankar et al presented an anomaly detection mechanism using blockchain that aims to prevent insider attacks in the IoT environment. [Extracted from the article]
- Published
- 2021
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14. Parent‐reported outcome measures evaluating communication in individuals with rare neurodevelopmental disorders: A systematic review.
- Author
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Saldaris, Jacinta M., Ayalde, Jeremiah, Kankanange, Samali, Keeley, Jessica, Leonard, Helen, Jacoby, Peter, Marsh, Eric D., Benke, Tim A., Demarest, Scott T., and Downs, Jenny
- Subjects
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PSYCHOMETRICS , *CINAHL database , *DATA transmission systems , *CLINICAL trials , *CAREGIVERS - Abstract
Background Aims Methods Main Contribution Conclusions WHAT THIS PAPER ADDS What is already known on the subject What this paper adds to existing knowledge What are the clinical implications of this work? Communication impairments are a leading concern for parent caregivers of individuals with rare neurodevelopmental disorders (RNDDs). Clinical trials of disease modifying therapies require valid and responsive outcome measures that are relevant to individuals with RNDDs. Identifying and evaluating current psychometric properties for communication measures is a critical step towards the selection and use of appropriate instruments.This systematic review offers (1) a description of parent‐reported communication measures and (2) evidence for their psychometric properties, in RNDDs.The systematic review protocol was registered in the International Prospective Register of Systematic Reviews (PROSPERO; CRD42022334649). MEDLINE (Ovid), Embase, PsychINFO, Web of Science, CINAHL Plus, Cochrane Library, ClinicalTrials.gov, the Australian New Zealand Clinical Trials Registry were searched from inception to August 2023. Methodological assessment of quality was completed using the COnsensus‐based Standards for the selection of health status Measurement INstruments (COSMIN) checklist. Parent‐reported measures used in observational studies and clinical trials were identified. Data on utility, reliability and validity for RNDDs were extracted.Sixteen parent‐reported communication measures were used in RNDD research, the Vineland Adaptive Behavior Scales being most commonly used. Validation data in RNDDs were identified for six of these measures. Limitations related to sample size or the scope of psychometric testing.Many communication measures have been used for RNDDs but there are few data validating their use. Valid and reliable methods of measuring communication in persons with RNDDs is a priority for future high‐quality clinical trials. Communication is a critical domain for families with a child with a rare neurodevelopmental disorder (RNDD). Validated outcome measures are essential for accurate evaluation and interpretation of responses to treatments in clinical trials. We identified 16 parent‐reported communication measures that have been used with RNDDs, but only six measures had validation data for at least one RNDD. High quality evidence is accumulating, with all validation studies in this review published between 2020 to 2023. Modifications of existing measures may be required to assess communication for RNDDs. This systematic review catalogues the available psychometric data for communication measures and indicates an ongoing need for new validation studies to ensure they are fit‐for‐purpose for upcoming clinical trials in RNDDs. This review will inform the selection of communication measures for clinical trials and research studies. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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15. Joint optimization of deployment, user association, channel, and resource allocation for fairness‐aware multi‐UAV network.
- Author
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Sun, Weihao, Wang, Hai, Qin, Zhen, and Qin, Zichao
- Subjects
NASH equilibrium ,RESOURCE allocation ,DATA transmission systems ,INTEGER programming ,NETWORK performance - Abstract
This paper studies the problem of joint deployment, user association, channel, and resource allocation in unmanned aerial vehicle‐enabled access network. Since different user equipments performing different tasks and have different data rate requirements, the priority‐based traffic fairness problem is investigated. This problem, however, is a mixed integer nonlinear programming problem with NP‐hard complexity, making it challenging to be solved. To address this issue, a self‐organized and distributed framework "sense‐as‐you‐fly" based on the decomposition process, which divides the original problem into several subproblems, is proposed. Assuming without central controller, we derive the closed‐form resource allocation scheme and propose distributed many‐to‐one matching to optimize user association subproblem. Considering the coupled characteristics, the multi‐unmanned aerial vehicle deployment and channel allocation subproblems are modelled as a local altruistic game. The existence of Nash equilibrium is proved with the aid of exact potential game and efficient best response learning‐based algorithm is proposed. The original problem is finally addressed by solving the sub‐problems alternately and iteratively. Simulation results verify its effectiveness. By jointly optimizing multidimensional variables, the proposed algorithm unlocks network performance gains, especially in resource‐limited regimes. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
16. Multi‐view synergistic enhanced fault recording data for transmission line fault classification.
- Author
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Jia, Minghui, Huang, Xiaohu, Han, Fengjun, Yan, Dequan, Wang, Wei, Zhu, Guochao, Zhang, Lin, Pan, Chao, Ma, Haifeng, and Wei, Jidong
- Subjects
DATA recorders & recording ,ELECTRIC lines ,DATA transmission systems ,DEEP learning ,FAULT diagnosis ,ELECTRIC fault location ,SMART power grids ,DATA augmentation - Abstract
Fault recorded data has been proven to be effective for fault diagnosis of overhead transmission lines. Utilizing deep learning to mine potential fault patterns in fault recording data is an inevitable trend. However, it is usually difficult to obtain massive labeled fault recording data, which results in deep learning‐based fault diagnosis models not being adequately trained. Although data augmentation methods provide ideas for expanding the training data, existing data augmentation algorithms (e.g. random perturbation‐based augmentation) may lead to distortion of multi‐view data, that is, time domain data and frequency domain data of the fault recorded data, which results in the inconsistency of physical properties and statistical distributions of the generated data and the actual recording data, and misguides the training of the models. Hence, this study proposes a transmission line fault classification method via the multi‐view synergistic enhancement of fault recording data. The methodology proposes to start with a synergistic enhancement of multi‐view data such as time and frequency domains of fault recording data, and utilizes contrastive learning to further improve the performance of the fault classification model while ensuring that the generated data is not distorted. Experimental results on three real‐world datasets validate the effectiveness of the proposed method. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
17. Statistical relationships between downloads and citations at the level of individual documents within a single journal.
- Author
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Moed, Henk F.
- Subjects
DOWNLOADING ,ELECTRONIC journals ,PERIODICALS ,PERIODICAL publishing ,ELECTRONIC publishing ,DATA transmission systems - Abstract
Statistical relationships between downloads from ScienceDirect of documents in Elsevier's electronic journal Tetrahedron Letters and citations to these documents recorded in journals processed by the Institute for Scientific Information/Thomson Scientific for the Science Citation Index (SCI) are examined. A synchronous approach revealed that downloads and citations show different patterns of obsolescence of the used materials. The former can be adequately described by a model consisting of the sum of two negative exponential functions, representing an ephemeral and a residual factor, whereas the decline phase of the latter conforms to a simple exponential function with a decay constant statistically similar to that of the downloads residual factor. A diachronous approach showed that, as a cohort of documents grows older, its download distribution becomes more and more skewed, and more statistically similar to its citation distribution. A method is proposed to estimate the effect of citations upon downloads using obsolescence patterns. It was found that during the first 3 months after an article is cited, its number of downloads increased 25% compared to what one would expect this number to be if the article had not been cited. Moreover, more downloads of citing documents led to more downloads of the cited article through the citation. An analysis of 1,190 papers in the journal during a time interval of 2 years after publication date revealed that there is about one citation for every 100 downloads. A Spearman rank correlation coefficient of 0.22 was found between the number of times an article was downloaded and its citation rate recorded in the SCL When initial downloads-defined as downloads made during the first 3 months after publication-were discarded, the correlation raised to 0.35. However, both outcomes measure the joint effect of downloads upon citation and that of citation upon downloads. Correlating initial downloads to later citation counts, the correlation coefficient drops to 0.11. Findings suggest that initial downloads and citations relate to distinct phases in the process of collect- Statistical relationships between downloads from ScienceDirect of documents in Elsevier's electronic journal Tetrahedron Letters and citations to these documents recorded in journals processed by the Institute for Scientific Information/Thomson Scientific for the Science Citation Index (SCI) are examined. A synchronous approach revealed that downloads and citations show different patterns of obsolescence of the used materials. The former can be adequately described by a model consisting of the sum of two negative exponential functions, representing an ephemeral and a residual factor, whereas the decline phase of the latter conforms to a simple exponential function with a decay constant statistically similar to that of the downloads residual factor. A diachronous approach showed that, as a cohort of documents grows older, its download distribution becomes more and more skewed, and more statistically similar to its citation distribution. A method is proposed to estimate the effect of citations upon downloads using obsolescence patterns. It was found that during the first 3 months after an article is cited, its number of down-loads increased 25% compared to what one would expect this number to be if the article had not been cited. Moreover, more downloads of citing documents led to more downloads of the cited article through the citation. An analysis of 1,190 papers in the journal during a time interval of 2 years after publication date revealed that there is about one citation for every 100 downloads. A Spearman rank correlation coefficient of 0.22 was found between the number of times an article was downloaded and its citation rate recorded in the SCI. When initial downloads-defined as downloads made during the first 3 months after publication-were discarded, the correlation raised to 0.35. However, both outcomes measure the joint effect of downloads upon citation and that of citation upon downloads. Correlating initial downloads to later citation counts, the correlation coefficient drops to 0.11. Findings suggest that initial downloads and citations relate to distinct phases in the process of collecting and processing relevant scientific information that eventually leads to the publication of a journal article. [ABSTRACT FROM AUTHOR]
- Published
- 2005
- Full Text
- View/download PDF
18. Opinion Paper: Design Criteria for Documentation Retrieval Languages.
- Author
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Gebhardt, Friedrich and Stellmacher, Imant
- Subjects
LIBRARY information networks ,DATA transmission systems ,INFORMATION storage & retrieval systems ,ABSTRACTING & indexing services ,PROGRAMMING languages ,ELECTRONIC data processing - Abstract
Query languages for document retrieval systems should be simple and easy to learn for the casual user; they should provide all conceivable facilities for the experienced user. These goals comprise the most serious contradictions that evolve between all the design criteria collected, compared, and evaluated in this paper. The proposed solution or, at least, relief to this conflict is to provide the user with a simple, clearly designed subset of the language that nevertheless includes all important query functions, while the additions to modify, shorten, improve, and extend it are left to the experienced user. It is stressed that the simple data formats available with most systems are insufficient; the need for more elaborate structures is substantiated. A point is made for a formal rather than a natural language for document retrieval. [ABSTRACT FROM AUTHOR]
- Published
- 1978
- Full Text
- View/download PDF
19. P‐19: A Design and application of MIP special driving system for low power Glass‐based products.
- Author
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Zhao, Jing, Bai, Zixuan, Liu, Yujie, Long, Feng, and Chen, Xiuyun
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DATA transmission systems ,TACTILE sensors ,IMAGE transmission ,PARALLEL electric circuits ,USER experience ,LIQUID crystal displays ,ELECTRONIC data processing - Abstract
In this paper, a design and application of low power handwritten tablet is proposed. Based on glass‐based MIP low power LCD technology for a 8‐inch product , the multi‐lane SPI series parallel decoding circuit is used to improve the decoding speed of image data transmission, At the same time, it can be refreshed in units of 1 line for partial refresh by means of address decoding. Because the communication and decoding interface of MIP LCD technology is a non‐general interface, an adaptive dedicated driving system is proposed simultaneously, including SOC, MCU, MIP LCD screen, stylus and touch sensor processing. In this driving system, SOC is transmitted to MCU through USB HS, and MCU drives MIP display by customized SPI interface. It can realize the global refresh, partial refresh and stylus touch through data processing which matching the unique data requirements of MIP and adopting multi‐buffer and thread separation. The low‐ power handwritten tablet solution proposed in this paper can significantly reduce power consumption with static power consumption of 25uW and full‐screen refresh rate reach 25Hz while partial refresh rate (100 lines) can be up to 300Hz. Combined with 8color display and stylus partial refresh application, the display content is richer and the response speed is increased by 42.8%, user experience is greatly improved. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
20. A high-throughput big-data orchestration and processing system for the High Energy Photon Source.
- Author
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Xiang Li, Yi Zhang, Yu Liu, Pengcheng Li, Hao Hu, Liwen Wang, Ping He, Yuhui Donga, and Chenglong Zhang
- Subjects
SYNCHROTRON radiation ,PHOTONS ,ARCHITECTURAL designs ,ACQUISITION of data ,DATA transmission systems - Abstract
High-data-throughput and multimodal-acquisition experiments will prevail in next-generation synchrotron beamlines. Orchestrating dataflow pipelines connecting the data acquisition, processing, visualization and storage ends are becoming increasingly complex and essential for enhancing beamline performance. Mamba Data Worker (MDW) has been developed to address the data challenges for the forthcoming High Energy Photon Source (HEPS). It is an important component of the Mamba experimental control and data acquisition software ecosystem, which enables fast data acquisition and transmission, dynamic configuration of data processing pipelines, data multiplex in streaming, and customized data and metadata assembly. This paper presents the architecture and development plan of MDW, outlines the essential technologies involved, and illustrates its current application at the Beijing Synchrotron Radiation Facility (BSRF). [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
21. Mobile device security defense method and system based on address jump using sliding window technology.
- Author
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Niu, Xin and Yu, Xiaomo
- Subjects
INTERNET protocol address ,INTERNET of things ,TELECOMMUNICATION systems ,IP networks ,MULTICASTING (Computer networks) ,DATA transmission systems ,EMAIL security - Abstract
Summary: In order to solve the problem that IP address jump cannot be synchronized in real time due to the unstable speed of network data transmission in the Internet of Things system, in this paper, sliding window mechanism is introduced into network communication, and an Internet of Things system with network IP address jump function is constructed. The system adopts time synchronization scheme based on PTP protocol and IP address hopping strategy based on sliding window. The system includes three modules: time synchronization module based on PTP protocol to enhance security performance, address hopping module based on OpenFlow as core technology, and SDN routing module. The system can realize the security defense function of mobile devices on the Internet of Things. Finally, through the experimental test, it is found that, when the system time error is less than 18 s, the system's packet loss rate is stable and low. The anti‐attack ability is very strong. [ABSTRACT FROM AUTHOR]
- Published
- 2022
- Full Text
- View/download PDF
22. A control scheme for interval type‐2 T‐S fuzzy systems at constrained bit rates: A coding and decoding scheme.
- Author
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Yan, Tingli, Zhang, Sunjie, and Yu, Ying
- Subjects
BIT rate ,FUZZY systems ,TELECOMMUNICATION systems ,DATA transmission systems ,SATISFACTION ,ORTHOGONAL decompositions ,ADAPTIVE fuzzy control ,VIDEO coding - Abstract
Summary: This study focuses on a class of interval type‐2 T‐S fuzzy systems under bit rate constraint(BRC), which can adapt to complex systems more flexibly than the traditional interval type‐1 T‐S fuzzy model. In order to guarantee the security of data transmission, and considering that the channel is affected by the bit rate during transmission, this study introduces a codec scheme in the interval type‐2 T‐S fuzzy system and applies it to the channel from the sensor to the controller. With the support of the codec scheme, this study explores the sufficient conditions to satisfy the data recoverability, and based on the satisfaction of these conditions, the system is proposed to satisfy the sufficient conditions for input‐to‐state stability (ISS) and the controller gain. Through the in‐depth analysis in this paper, this study proposes a control scheme that can fit complex systems more accurately and also confirms the importance of considering bit rate constraints in communication systems. Finally, the paper is validated by simulation with two specific examples, which fully demonstrate the superiority and effectiveness of the proposed control scheme. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
23. An optimal container update method for edge‐cloud collaboration.
- Author
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Zhang, Haotong, Lin, Weiwei, Xie, Rong, Li, Shenghai, Dai, Zhiyan, and Wang, James Z.
- Subjects
IMAGE reconstruction ,IMAGE transmission ,DATA transmission systems ,EDGE computing ,CONTAINERS ,MULTICASTING (Computer networks) - Abstract
Emerging computing paradigms provide field‐level service responses for users, for example, edge computing, fog computing, and MEC. Edge virtualization technologies represented by Docker can provide a platform‐independent, low‐resource‐consumption operating environment for edge service. The image‐pulling time of Docker is a crucial factor affecting the start‐up speed of edge services. The layer reuse mechanism of native Docker cannot fully utilize the duplicate data of node local images. In this paper, we propose a chunk reuse mechanism (CRM), which effectively targets node‐local duplicate data during container updates and reduces the volume of data transmission required for image building. We orchestrate the CRM process for cloud and remote‐cloud nodes to ensure that the resource overhead from container update data preparation and image reconstruction is within an acceptable range. The experimental results show that the CRM proposed in this paper can effectively utilize the node local duplicate data in the synchronous update of containers in multiple nodes, reduce the volume of data transmission, and significantly improve container update efficiency. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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24. MIMO broadcast scheduling using binary spider monkey optimization algorithm.
- Author
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Mohanty, Jyoti, Pattanayak, Prabina, Nandi, Arnab, Baishnab, Krishna Lal, Gurjar, Devendra Singh, and Mandloi, Manish
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MATHEMATICAL optimization ,DATA transmission systems ,MONKEYS ,COMPUTATIONAL complexity ,ALGORITHMS ,DATA packeting ,MULTICASTING (Computer networks) - Abstract
Summary: Multi‐user multiple‐input multiple‐output (MU‐MIMO) system has the capability of delivering optimal system capacity that provides the simultaneous service to a large number of users using dirty paper coding (DPC) scheme. However, the DPC scheme is quite difficult to be implemented in the real‐time scenario as the computational complexity is very high and the process cannot be accomplished within the duration of few coherence periods. In this paper, we have adopted a newly developed binary spider monkey optimization (binary SMO) algorithm for the joint user and antenna scheduling (JUAS) problem to maximize the achievable system sum‐rate performance. It has been shown that JUAS with binary SMO achieves nearly 99% of system throughput achieved by the extensive search algorithm (ESA) using DPC. Also it is compared with binary flower pollination algorithm (binary FPA) to check which of the two gives better result. It is observed that the binary SMO in JUAS achieves a globally optimal solution quite rapidly, to remain well within the modern‐day packet data communication interval. The proposed binary SMO shows low computational complexity and computation time as compared to ESA (i.e., DPC). Also when it is compared with binary FPA, it shows quite a significant improvement in system throughput. Moreover, the effectiveness of binary SMO in the MU‐MIMO broadcasting scenario is verified through extensive simulation results. [ABSTRACT FROM AUTHOR]
- Published
- 2021
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25. The applications of the routing protocol for low‐power and lossy networks (RPL) on the internet of mobile things.
- Author
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Ghanbari, Zahra, Navimipour, Nima Jafari, Hosseinzadeh, Mehdi, Shakeri, Hassan, and Darwesh, Aso
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INTERNET of things ,DATA transmission systems ,AD hoc computer networks ,NETWORK routing protocols ,WIRELESS Internet - Abstract
Summary: Internet of Mobile Things (IoMT) have become very popular recently. The routing protocol for low power and lossy networks (RPL) is standardized for static topologies. However, mobility is the nature of IoT. Mobility serves as a promising candidate to harness hand‐off time issues, delay in data transmission, overhead, and low packet delivery rate (PDR) effectively. This study presents a comprehensive account of the mobility‐aware RPL‐based routing protocols to validate and compare the experimental results. Remarkably, classification methods are used in many articles. The aim is to introduce significant research efforts to improve RPL objective functions (OF) performance in hand‐off time, PDR, delay, overhead, and so forth. In this regard, a complete analysis of the existing routing protocols in IoMT has been presented to compare the results. The main focus of this study is on approaches that proposed new OFs for supporting mobility in RPL. Two main categories are considered to study RPL‐based routing protocol mechanisms: The mobile and static sink. The related studies on the mobile sink are divided into three groups: Single metric‐based OF, composite metric OF, and hybrid routing protocols. Also, the related works based on the static sink are categorized into four groups: Fuzzy logic‐based OF, trickle timer‐based OF, composite metrics‐based OF, and modification control messages‐based OF approach. This paper presents a detailed comparison of mechanisms in each category. It also highlights the pros, cons, open issues, and evaluated metrics of each paper. Besides, challenges of mobility in the RPL‐based routing protocol mechanism in IoMT for future studies. [ABSTRACT FROM AUTHOR]
- Published
- 2022
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26. Data transmission path planning method for wireless sensor network in grounding grid area based on MM‐DPS hybrid algorithm.
- Author
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Xiao, Xianghui, Huang, Longsheng, Zhang, Zhenshan, Huang, Mingxian, Guan, Luchang, and Song, Yunhao
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WIRELESS sensor networks ,DATA transmission systems ,SEARCH algorithms ,MULTICASTING (Computer networks) ,NONDESTRUCTIVE testing ,ALGORITHMS ,ENERGY consumption - Abstract
At present, in order to conduct non‐destructive testing on the grounding grid of substations under the condition of continuous power supply and no excavation, researchers have applied wireless technology based on electrochemical methods to remotely monitor the corrosion state of grounding conductors online. Nevertheless, wireless signals are affected by the environment when they are transmitted underground. In the field of grounding gird wireless monitoring, how to plan the information transmission path of wireless sensor network (WSN) with high accuracy of data transfer and low energy consumption earns growing research attention. To address the problem of WSN path planning in grounding grid area, a path planning method for WSN based on the hybrid algorithm of map‐matching algorithm and double‐pole search algorithm (MM‐DPS) is proposed in this paper. The map‐matching algorithm is employed to calculate the optimal sampling node number of the data transmission path. On the basis of the optimal sampling node number, the double‐pole search algorithm is employed in seeking out each sensor node of the path, and two groups of path plans are obtained. In the simulation experiment, compared with the A‐star algorithm, the MM‐DPS algorithm shortens the data transmission path length by about 39% and reduces the energy consumption by about 57%. The research work brings a method to alleviate the problem of data transmission underground of WSN in grounding grid area. The method not only ensures the accuracy of data transmission, but also shorts the transmission distance and reduces energy consumption. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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27. A MCR‐WPT system based on LCL‐S/P hybrid compensation network with CC/CV and maximum power optimization suiting for battery charging.
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Li, Kun, Gong, Zheng, Liu, Qing, Zheng, Shuaiyong, Liu, Junyou, and Wang, Shuaizhong
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WIRELESS power transmission ,ELECTRIC vehicle charging stations ,ELECTRIC vehicle batteries ,POWER supply circuits ,DATA transmission systems ,ELECTRIC batteries ,MAGNETIC resonance ,SWITCHING power supplies - Abstract
A novel magnetic coupling resonance wireless power transfer (MCR‐WPT) system, which has constant‐current (CC) and constant‐voltage (CV) output characteristics suiting for batteries charging, is proposed in this paper. The hybrid compensation topology is adopted; in detail, the LCL‐P circuit topology is used in the CC mode, while the LCL‐S topology is used in the CV mode. Since the switchable components are only located at the receiving side of WPT, the switching can be controlled by the receiving side based on the batteries' state without data communication between transmitting side and receiving side. Furthermore, an adjustable frequency tuning method which is based on proportion integration (PI) closed‐loop controlled by the transmitting side is applied to maximize the current of the transmitting coil. This method also can solve the frequency splitting problem, improving the stability and power of the system while the distance of the two sides changes. The performance of the proposed WPT system is verified by simulation and experiments. The experiment results show that the load current variation is less than 3% in the CC mode and the load voltage changes less than 5% in the CV mode, as the load resister changes from 5 to 20 Ω. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
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28. Information organization and representation in digital cultural heritage in Brazil: Systematic mapping of information infrastructure in digital collections for data science applications.
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Martins, Dalton Lopes, Lemos, Daniela Lucas da Silva, de Oliveira, Luis Felipe Rosa, Siqueira, Joyce, do Carmo, Danielle, and Medeiros, Vinicius Nunes
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CULTURE ,DATA science ,RESEARCH ,MEDICAL information storage & retrieval systems ,INFORMATION resources management ,INTERNET ,METADATA ,RESEARCH methodology ,RESEARCH funding ,CONTENT analysis ,DATA transmission systems ,THEMATIC analysis ,FEDERAL government ,INFORMATION technology - Abstract
This paper focuses on data science in digital cultural heritage in Brazil, where there is a lack of systematized information and curated databases for the integrated organization of documentary knowledge. Thus, the aim was to systematically map the different forms of information organization and representation applied to objects from collections belonging to institutions affiliated with the federal government's Special Department of Culture. This diagnosis is then used to discuss the requirements of devising strategies that favor a better data science information infrastructure to reuse information on Brazil's cultural heritage. Content analysis was used to identify analytical categories and obtain a broader understanding of the documentary sources of these institutions in order to extract, analyze, and interpret the data involved. A total of 215 hyperlinks that can be considered cultural collections of the institutions studied were identified, representing 2,537,921 cultural heritage items. The results show that the online publication of Brazil's digital cultural heritage is limited in terms of technology, copyright licensing, and established information organization practices. This paper provides a conceptual and analytical view to discuss the requirements for formulating strategies aimed at building a data science information infrastructure of Brazilian digital cultural collections that serves as future projects. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
29. Node localization and data aggregation scheme using cuckoo search and neural network.
- Author
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Kaur, Simarjeet, Kaur, Navdeep, Bhatia, Kamaljit Singh, Khan, Mohd Abdul Rahim, Gupta, Manoj, Sharma, Naveen Kumar, and Sharma, Sunil Kumar
- Subjects
SWARM intelligence ,WIRELESS sensor networks ,CUCKOOS ,DATA transmission systems - Abstract
Among multi‐hop technology, wireless sensor network (WSN) has been extensively investigated owing to its potential application in vivid fields. However, a key issue probing WSN is node location that is also the major area of interest in the present paper. The paper takes advantage of cuckoo search (CS) as the swarm intelligence technique used to address the issues of identification of malicious or unknown nodes within the network. The distance vector (DV)‐hop is used to determine the distance between the anchor sensor node and the unknown or the node with compromised nature. Then, artificial neural network architecture is used to distinguish the nodes based on the characteristics. This is followed by the evaluation of the proposed scheme to offer reliable data transmission using CS optimized data aggregation scheme. The simulation analysis over 1000 deployed nodes shows that CS significantly decreases the localization error to 0.494 and localization time to 0.058 s along with 15%–20% improvement in the throughput and packet delivery ratio. This shows that the proposed CS optimized architecture is successful in identifying the position of unknown nodes as well as compromised nodes that significantly improved the reliability of the data transmission. [ABSTRACT FROM AUTHOR]
- Published
- 2023
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- View/download PDF
30. P‐6.11: Optimizing AMOLED Product Data Programming via eDP Interface.
- Author
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Zhang, Hufeng, Quan, Chenxin, and Quan, Chuwen
- Subjects
PROBLEM solving ,COMPUTER firmware ,DIGITAL images ,DATA transmission systems ,MANUFACTURING processes - Abstract
This paper studies how to implement Flash data programming for AMOLED display module products through eDP interface. eDP interface is an internal digital interface based on DisplayPort architecture and protocol, which has the advantages of high transmission rate and low power consumption, but is not suitable for transmitting non‐image or video data. Therefore, AMOLED display modules usually need additional interfaces to write key data (such as Demura, Gamma and TCON firmware) into Flash chips, which brings some problems of data transmission interference, unreliability and inefficiency. To solve these problems, this paper proposes a new operation method, which repackages the data to be written, converts them into images, sends them to TCON through eDP interface, and then TCON analyzes the images, extracts the valid data, and starts programming for Flash. This paper divides the whole process into three steps, and verifies the feasibility and effectiveness of the method through experiments. This method effectively solves the problem of data programming, simplifies the production process, and improves the speed and reliability of programming. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
31. The network of telecommunications cross‐layer cooperation control of wireless sensor communication network applied in smart distribution grid.
- Author
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Li, Chunlai and Yuan, Shun
- Subjects
WIRELESS sensor networks ,SENSOR networks ,WIRELESS sensor nodes ,POWER supply quality ,REAL-time control ,DATA transmission systems ,COMMUNICATION policy - Abstract
Summary: With the rapid development of artificial intelligence, the intelligent distribution network can effectively improve the overall power supply quality of the distribution system. The designed distributed power has been able to achieve an optimal operation of grid connection, while the high‐speed operation of distribution equipment can achieve effective interaction with users. At present, intelligent distribution network is widely studied and applied in power industry because of its advantages of high efficiency energy and environmental protection. Because of its unique characteristics, such as low cost and fast speed, wireless sensor network is cleverly applied in intelligent distribution network. However, wireless sensor network has some defects in energy utilization due to its large range and too many nodes. This paper presents a cross‐layer cooperative control model, which can control the real time and reliability of network power data communication through stack protocol layer. This method can learn the weight value adaptively by training the influence relationship between the parameters of each protocol layer and achieve real‐time and reliable data communication by adjusting the policy and parameters of each layer in real time. This method takes the parameters of each wireless sensor node as the unit to establish the influence relationship between each other so as to realize the connection between each node of wireless sensor network and then to control the wireless sensor network as a whole to ensure the real‐time reliability of data communication in intelligent distribution network. In this paper, a lot of simulation experiments have been done, and the results show that the proposed cross‐layer cooperative control model can control the whole wireless sensor network to achieve efficient data transmission capacity of intelligent distribution wireless sensor network. [ABSTRACT FROM AUTHOR]
- Published
- 2022
- Full Text
- View/download PDF
32. High level Petri nets‐based proposal of an integrated intrusion detection and prevention mechanism in network controlled systems.
- Author
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Farah, Khamsa, Chabir, Karim, and Abdelkrim, Mohamed Naceur
- Subjects
INTRUSION detection systems (Computer security) ,PETRI nets ,CYBERTERRORISM ,NETWORK performance ,DATA transmission systems ,FAULT diagnosis - Abstract
The authors' work deals with modelling with coloured Petri nets (CPN) of network controlled systems (NCS) and exposes a proposal of a sensor fault detection and prevention mechanism. In NCS, the network must be viewed as part of the system and not just a means of communication. For this, two issues must be considered. The first consists of adapting the control and diagnostic laws to the performance of the network. The second is to guarantee the performance of the system. Each control loop containing a network is vulnerable to faults and cyber attacks and malicious users can intercept and listen to data during transmission. For that reason, it is essential to protect transmitted data against unauthorized access and modification and to diagnose components. In this paper, the authors presented a model with CPN of a NCS, the authors proposed a sensor fault detection and correction mechanism, then the authors injected a sensor fault and the authors tested the effectiveness of the proposed mechanism in detecting that fault and correcting its influence. Simulation results proved the success of the preventive mechanism in overcoming the influence of the fault and returning to normal behaviour. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
33. Hybrid continuous inverse class‐F high‐efficiency power amplifier based on phase shift analysis.
- Author
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Song, Kaijun, He, Aoke, and Li, Qian
- Subjects
MICROWAVE communication systems ,TELECOMMUNICATION ,MICROWAVE amplifiers ,POWER amplifiers ,TRANSMITTERS (Communication) ,BROADBAND communication systems ,DATA transmission systems ,MAGNETRONS - Abstract
In this paper, a hybrid continuous inverse class‐F high‐efficiency power amplifier based on phase shift analysis is proposed. A broadband and high‐efficiency microwave power amplifier are designed by adopting load pull, source pull technique, and low‐pass filter matching structure. The measured results show that the drain efficiency ranges from 67.5% to 77.8%, the saturated output power ranges from 40.2 to 42.4 dBm, and the saturated power gain ranges from 10.2 to 12.4 dB in the working frequency band from 2 to 3 GHz. The power amplifier proposed in this paper fits the current broadband microwave communication technology and plays an important role in the transmission of high data flow signals by wireless transmitters. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
34. Asynchronous multi‐rate method of real‐time simulation for active distribution networks.
- Author
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Fu, Hao, Li, Peng, Fu, Xiaopeng, Wang, Zhiying, Yan, Jinyue, Wu, Jianzhong, and Wang, Chengshan
- Subjects
LARGE scale systems ,TURBINE generators ,GATE array circuits ,WIND turbines ,ASYNCHRONOUS learning ,DATA transmission systems - Abstract
The real‐time simulation of active distribution networks (ADNs) can provide an accurate insight into transient behaviours, but faces challenges in simulation efficiency and flexibility brought by larger system scales and wider time‐scale ranges. This paper presents an asynchronous multi‐rate (AMR) method and design for the real‐time simulation of large‐scale ADNs. In the proposed method, the entire ADN was decoupled into different subsystems according to accuracy requirements, and optimized time‐steps were allocated to each subsystem to realize a fully distributed simulation. This not only alleviated the time‐step coordination problem existing in multi‐rate real‐time simulations, but also enhanced the flexible expansion capabilities of the real‐time simulator. To realize the AMR real‐time simulation, a multi‐rate interfacing method, synchronization mechanism, and data communication strategy are proposed in this paper, and their hardware design is also presented in detail. A modified IEEE 123‐node system with photovoltaics and wind turbine generators was simulated on a 3 field‐programmable gate arrays (FPGAs)‐based AMR real‐time simulator. The real‐time results were captured by the oscilloscope and verified with PSCAD/EMTDC, which demonstrated the superiority in simulation flexibility and accuracy compared with the synchronous multi‐rate (SMR) method. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
35. A Smart Foveal VR Display Algorithm base on SPR Pixel Arrangement and Smart View Driving.
- Author
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Shi, Tiankuo, Zhang, Xiaomang, Shi, Lingyun, Zhou, Zhiheng, Ji, Zhihua, Hou, Yifan, Gao, Bo, Li, Yue, Sun, Wei, Zhang, Hao, and Chen, Ming
- Subjects
HEAD-mounted displays ,ALGORITHMS ,PIXELS ,PIXEL density measurement ,DATA transmission systems ,VIRTUAL reality equipment ,VIRTUAL reality - Abstract
VR(Virtual Reality) Display always need high PPI(Pixel Per Inch) and high resolution because of its near eye amplification effect and large viewing angle. It is not uncommon to find a 4K or 8K solution today. With the growth of PPI and resolution, display manufacture technology and data transmission become a much more harder problem. Central foveal technology is usually used in gazing point VR system, there is a lot of good ideas in camera and GPU technology, but it seems rarely have something that display panel can do. In this paper, we present a smart foveal VR display algorithm base on BOE SPR (Sub‐pixel Rendering) pixel arrangement(which is called BV3: BrightView3 by BOE) and smart view driving function. The change of pixel arrangement relieve the pressure of manufacture requirement, and SPR algorithm used to maintain the picture quality. And the change of panel's driving method help to solve the data transmission problem, we use a smart foveal algorithm to deal with the data of central foveal area and non‐foveal area separately. As a result, the algorithm can help to save 3/4 data transmission band width. [ABSTRACT FROM AUTHOR]
- Published
- 2020
- Full Text
- View/download PDF
36. Multilevel cyclic shift index differential chaos shift keying system for high data rate transmission.
- Author
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Lin, Zixian, Xu, Weikai, and Wang, Lin
- Subjects
BIT error rate ,ADDITIVE white Gaussian noise ,DATA transmission systems ,CHAOTIC communication ,RAYLEIGH fading channels ,TELECOMMUNICATION systems ,IMAGE encryption - Abstract
This paper proposes a multilevel cyclic shift index modulation aided differential chaotic shift keying (MCSI‐DCSK) system to improve data rate and energy efficiency. In the MCSI‐DCSK system, the bit stream is divided into blocks with N(M+1)$N(M+1)$ bits which are further divided into N groups equally. In each group, the first M bits are mapped into an index of cyclic shift in the chaotic reference sequence, while the last bit is used to modulate the shifted chaotic reference sequence. Finally, the all modulated shifted chaotic reference sequences are superimposed to form the information‐bearing signal. So the proposed system improves the data rate. The analytical bit‐error‐rate (BER) expressions of the MCSI‐DCSK system are derived over additive white Gaussian noise and multipath Rayleigh fading channels and validated via simulations. In addition, the BER performance of the proposed system is compared with other non‐coherent, chaotic communication systems. Simulation results indicate that the MCSI‐DCSK system has better performance in data rate and BER. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
37. Research of trusted real‐time electrical data transmission mechanism based on Parallel Proof of Work algorithm.
- Author
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Yiming, Chen, Dongliang, Gao, Yuxuan, Yang, Jintang, Luo, and Li, Yi
- Subjects
ELECTRICITY ,DATA transmission systems ,ELECTRIC power systems ,SMART power grids ,INFORMATION retrieval - Abstract
Secure and reliable electricity supply is a prerequisite for the development of smart cities, and the trustworthy and efficient transmission of electrical data is the foundation for the safe and stable operation of the power grid. This paper introduces a real‐time data transmission blockchain technique based on parallel proof of work algorithm. The new block generation process of proposed blockchain is divided into five subroutines: hash pointer computation, real‐time data pudding, signature value iteration, interruption, block header assembly. The real‐time data pudding and signature value iteration are parallel processed, which brings the effect of decreasing energy loss of blockchain system, and enhances the speed of new block generation and the bandwidth of data storage on blockchain. Computer simulation shows the proposed strategy can be effectively applied in real‐time electrical data transmission application, raising the data transmission reliability with no harm to real‐time data transfer function. This strategy provides a solution to guarantee data transmission safety in the digital conversion of power grid. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
38. Recent Progress in Silicon‐Based Photonic Integrated Circuits and Emerging Applications.
- Author
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Xiao, Zian, Liu, Weixin, Xu, Siyu, Zhou, Jingkai, Ren, Zhihao, and Lee, Chengkuo
- Subjects
- *
INTEGRATED circuits , *COMPLEMENTARY metal oxide semiconductors , *SEMICONDUCTOR devices , *LIGHT sources , *RESONATORS , *DATA transmission systems - Abstract
In recent years, with the further ministration of the semiconductor device in integrated circuits, power consumption and data transmission bandwidth have become insurmountable obstacles. As an integrated technology, photonic integrated circuits (PICs) have a promising potential in the post‐Moore era with more advantages in data processing, communication, and diversified sensing applications for their ultra‐high process speed and low power consumption. Silicon photonics is believed to be an encouraging solution to realize PICs because of the mature CMOS process. The past decades have witnessed a huge growth in silicon PICs. However, there is still a demand for the development of silicon PICs to enable powerful chip‐scale systems and new functionalities. In this paper, a review of the photonic components, functional blocks, and emerging applications for PICs is offered. The common photonic components are classified into several sections, including on‐chip light sources, fiber‐to‐chip couplers, photonic resonators, waveguide‐based sensors, on‐chip photodetectors, and modulators. The functional blocks of the PICs mentioned in this review are photonic memories and photonic neural networks. Finally, the paper concludes with emerging applications for further study. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
39. Physical layer security of single‐input multiple‐out relay networks over Beaulieu‐Xie fading channels.
- Author
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Li, Junxia, Ma, Xuexue, Ye, Faxin, and Sun, Jiangfeng
- Subjects
PHYSICAL layer security ,DATA transmission systems ,TELECOMMUNICATION ,SIGNAL-to-noise ratio ,ANTENNAS (Electronics) ,LINEAR network coding ,WIRELESS channels ,RADIO transmitter fading - Abstract
With the progress of communication technology, the increasing wireless devices are hooked up the networks, and the consequent security problems cannot be ignored. At present, the solutions mainly include secret key system and physical layer security (PLS). However, secret key system that relies on highly complex algorithms for encryption and decryption still has the risk of being cracked by powerful computers. In this paper, the PLS of Beaulieu‐Xie fading channels is studied. To improve the transmission quality and support higher speed data transmission, the single‐input multiple‐out (SIMO) system considered is the Wyner eavesdropper model with decoding and forwarding (DF) relay over Beaulieu‐Xie fading. The closed‐form theoretical formulas for secure outage probability (SOP) and strictly positive secrecy capacity (SPSC) are obtained by complex unified functional representation, which includes two cases: LRD≤LRE${L_{RD}} \le {L_{RE}}$ and LRD>LRE${L_{RD}} > {L_{RE}}$. Moreover, the theoretical formulas are verified by Monte Carlo results. By comparing the simulation results with the theoretical analysis, the authors discussed the factors to improve the secure performance. Experiments show that the larger ratio of (λRD,λRE)$({{\lambda _{RD}},{\lambda _{RE}}})$, the smaller ratio of (mRD,mRE)$({{m_{RD}},{m_{RE}}})$, smaller signal‐to‐noise ratio (SNR) of eavesdropping channels, smaller threshold Cth${C_{th}}$ and more legitimate antennas LRD${L_{RD}}$ are beneficial to the improvement of anti‐interference capability for the relay networks with Beaulieu‐Xie distributions when the legal channel link R→D is in a state of high SNR. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
40. An innovative approach to using an intensive field course to build scientific and professional skills.
- Author
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Nicotra, Adrienne B., Geange, Sonya R., Bahar, Nur H. A., Carle, Hannah, Catling, Alexandra, Garcia, Andres, Harris, Rosalie J., Head, Megan L., Jin, Marvin, Whitehead, Michael R., Zurcher, Hannah, and Beckmann, Elizabeth A.
- Subjects
FIELD research ,DATA transmission systems ,DATA management ,RESEARCH skills ,APPRENTICESHIP programs - Abstract
This paper reports on the design and evaluation of Field Studies in Functional Ecology (FSFE), a two‐week intensive residential field course that enables students to master core content in functional ecology alongside skills that facilitate their transition from "student" to "scientist." We provide an overview of the course structure, showing how the constituent elements have been designed and refined over successive iterations of the course. We detail how FSFE students: (1) Work closely with discipline specialists to develop a small group project that tests an hypothesis to answer a genuine scientific question in the field; (2) Learn critical skills of data management and communication; and (3) Analyze, interpret, and present their results in the format of a scientific symposium. This process is repeated in an iterative "cognitive apprenticeship" model, supported by a series of workshops that name and explicitly instruct the students in "hard" and "soft" skills (e.g., statistics and teamwork, respectively) critically relevant for research and other careers. FSFE students develop a coherent and nuanced understanding of how to approach and execute ecological studies. The sophisticated knowledge and ecological research skills that they develop during the course is demonstrated through high‐quality presentations and peer‐reviewed publications in an open‐access, student‐led journal. We outline our course structure and evaluate its efficacy to show how this novel combination of field course elements allows students to gain maximum value from their educational journey, and to develop cognitive, affective, and reflective tools to help apply their skills as scientists. [ABSTRACT FROM AUTHOR]
- Published
- 2022
- Full Text
- View/download PDF
41. Hybrid grasshopper and Harris hawk optimization algorithm‐based energy efficient routing protocol for extending network lifetime in wireless sensor networks.
- Author
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Kodati, Sarangam, Dhasaratham, Meghavath, Kishor, Bodla, and Narayana, Garlapati
- Subjects
- *
OPTIMIZATION algorithms , *NETWORK routing protocols , *DATA transmission systems , *WIRELESS sensor networks , *FAULT tolerance (Engineering) , *ENERGY consumption , *MULTICASTING (Computer networks) - Abstract
Summary: In wireless sensor networks (WSNs), routing based on cluster construction is highly preferred as it greatly supports reliable data communication, load balancing, and fault tolerance with extended network lifetime. In specific, metaheuristic approach‐based dynamic cluster heads (CHs) selection has the possibility of enhancing the lifespan of network and at the same time is capable in reducing the energy consumption. In this paper, hybrid grasshopper and Harris hawk optimization algorithm‐based energy efficient routing protocol (HGHHOA) is propounded for optimal CH selection. This proposed HGHHOA approach adopted a fitness function that incorporated the factors of residual energy, distance between CH and cluster members, distance between selected CHs and the sink, node centrality, and node degree into account. The fitness function values of optimality facilitate a potential CH selection with significant cost‐effective routing. It is proposed with primary objective of improving the network lifespan through optimized selection of CHs that balances the available energy in a predominant way. It is proposed with significance of handling premature convergence with minimized energy consumption and network lifetime through the possibility of establishing an ideal balance between number of alive and dead nodes. The results of this proposed HGHHOA approach with varying rounds of implementation exhibited better results in throughput and residual energy which is 23.98% and 29.21%, better than the bassline CH selection mechanisms. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
42. Energy efficient data dissemination in wireless sensor network enabled IoT using domain‐adaptive message passing graph neural network.
- Author
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Shiny, G. Susan, Ram, R. Saravana, J, Rajeshkumar, and Muthalakshmi, M.
- Subjects
- *
GRAPH neural networks , *OPTIMIZATION algorithms , *TRAFFIC density , *DEEP learning , *DATA transmission systems , *WIRELESS sensor networks - Abstract
Summary: In the past few years, restricted wireless sensor networks (WSNs) enabled the Internet of Things (IoT) have attracted significant attention and expansion to enhance service delivery and resource efficiency. Dissemination is a service offered by WSN that uses radio transmission and over‐the‐air programming for updating the deployed sensor nodes through online. The centralized data dissemination methods are replaced by the distributed approaches because they affect the drawbacks of a single point of failure, no scalability, and insecurity. Therefore, an Energy Efficient Protocol for Data Dissemination in Wireless Sensor network‐enabled IoT using Domain‐Adaptive Message Passing Graph Neural Network (EEP‐WSN‐IoT‐DMPGNN) is proposed in this paper. The nodes are formed as clusters utilizing the Deep Fuzzy Curriculum Clustering (DFCC) technique that rewards nodes belonging to a given cluster. By using the Crayfish Optimization Algorithm (COA), the Cluster Head (CH) selection optimally chose the ideal CH and satisfies the multiple objective functions, such as energy, delay, traffic density, and distance. Afterward, domain‐adaptive Message Passing Graph Neural Network (DMPGNN) based routing protocol is developed, the input given to the routing protocol includes a sink, action history, future node, and maximum‐distance node, which attains enhanced data transfer in the chosen path. The proposed technique attains a lower no. of dead nodes, lower energy consumption, and higher Network Lifetime while analyzed with existing techniques, such as routing technique depending on deep learning for effectual data transmission in 5G WSN communication (DL‐RPDT‐WSN), Reinforcement‐Learning base energy effectual optimized routing protocol in WSN (RL‐EERP‐WSN), and Energy‐efficient intellectual routing method for IoT‐enabled WSN (EIR‐IoT‐WSN), respectively. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
43. Signal‐to‐noise ratio estimation for broadband satellite‐to‐ground communication based on time‐domain channel impulse response reconstruction.
- Author
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Zhao, Yuanfan, Ju, Cheng, Wang, Dongdong, Liu, Na, Guan, Luyang, and Xie, Peng
- Subjects
FAST Fourier transforms ,IMPULSE response ,CHANNEL estimation ,SPECTRUM allocation ,BROADBAND communication systems ,DATA transmission systems - Abstract
Summary: Signal‐to‐noise ratio (SNR) estimation is crucial for spectrum management and data transmission. However, the existing classical methods in satellite‐to‐ground (SG) communication links, particularly for broadband transmission and under ultra‐low SNR conditions, often encounter substantial estimation errors. In this paper, a novel SNR estimation method based on time‐domain channel impulse response (CIR) reconstruction is proposed. Least square (LS) algorithm in frequency domain and inverse fast Fourier transform (IFFT) with a rectangular window are employed to reconstructed CIR. The noise energy is calculated by computing the average energy outside the window. The signal power is obtained by subtracting the noise energy from the total energy inside the window. In addition, a numerical simulation with a signal bandwidth of 400 MHz is performed to evaluate the effectiveness of the proposed algorithm in real SG communication scenarios. The simulation results show that compared with existing classical methods, even under ultra‐low SNR conditions, the proposed algorithm exhibits more accurate estimation ability and stronger resistance to frequency offset interference in nonterrestrial network (NTN) channels. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
44. Adaptive event‐triggered lateral control for autonomous vehicle system under stochastic‐sampling subject to dynamic quantization.
- Author
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Jiang, Wenke, Luo, Mengzhuo, Cheng, Jun, Katib, Iyad, and Shi, Kaibo
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MONTE Carlo method , *STOCHASTIC systems , *FUZZY systems , *DATA transmission systems , *TELECOMMUNICATION systems , *AUTONOMOUS vehicles - Abstract
Summary In this paper, we delve into the intricate problem of lateral control in autonomous vehicles, utilizing adaptive event triggering, dynamic quantizers, and incorporating stochastic sampling. By integrating the Adaptive Event‐Triggering Scheme (AETS) and dynamic quantizer in dual channels—namely the sensor‐to‐controller and controller‐to‐observer channels—we aptly cater to the multifaceted road conditions faced by autonomous vehicles. Moreover, in light of Denial of Service (DoS) attacks, our controllers ensure system stability amidst stochastic sampling. While ensuring an effective reduction in the amount of network communication data, the efficiency of the output feedback controllers is also significantly improved, thus enabling the closed‐loop system to be strictly dissipative performance stabilized. To substantiate the efficacy of our proposed method, simulation experiments were rigorously conducted using the Carsim‐Simulink platform, highlighting the enhanced safety of autonomous vehicles in real‐world operations. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
45. A distributed coordinated control strategy for isolated AC microgrids based on consensus algorithm considering communication delay.
- Author
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Yan, Chaofeng, Li, Qirui, Zhang, Xiaomeng, Han, Yang, Yang, Ping, and Zalhaf, Amr S.
- Subjects
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FACE-to-face communication , *DISTRIBUTED power generation , *REACTIVE power , *SIMULATION software , *DATA transmission systems , *DISTRIBUTED algorithms , *MICROGRIDS - Abstract
In the multi‐paralleled converter microgrid system, the traditional hierarchical control strategy can eliminate the bus voltage amplitude and frequency deviation from the rated value. However, isolated AC microgrids may face extreme scenarios such as communication delays and interruptions in data transmission due to the use of low‐bandwidth communication (LBC) lines. Additionally, the inconsistent line impedance of each distributed generation (DG) unit may result in the inaccurate division of reactive power in multi‐paralleled converter systems, thus affecting system stability. To address these issues, this paper presents a distributed coordinated control strategy for isolated AC microgrids based on the consensus algorithm. The proposed strategy first replaces LBC lines with a filter to alleviate the effects of communication delays. A small‐signal model is established in its state space, and stability of the microgrid system under the proposed control strategy is verified through eigenvalue analysis. Furthermore, based on the above theoretical analysis, a consensus algorithm is introduced, and a distributed control strategy for isolated AC microgrids based on the consensus algorithm is proposed to solve the issue of inaccurate equalization of the system's reactive power. Finally, factors that influence the dynamic convergence performance of the consensus algorithm are analyzed through simulation in PLECS software. Also, the maximum tolerable communication delays of the microgrid system under different communication topologies are also compared, and the system's robustness is evaluated under the condition of sudden communication interruption in a DG unit and sudden weather variation. These analyses confirmed the robustness of the proposed strategy against communication delays, output power fluctuation, and communication interruptions. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
46. Energy consumption of data transfer: Intensity indicators versus absolute estimates.
- Author
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Guennebaud, Gaël and Bugeau, Aurélie
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COMPUTER network traffic , *INTERNET traffic , *STREAMING video & television , *ENERGY consumption , *VIDEOCONFERENCING , *DATA transmission systems - Abstract
The assessment of energy consumption of data traffic for Internet services usually relies on energy intensity figures (in Wh/GB). In this paper, we argue against using these indicators for evaluating the evolution of energy consumption of data transmission induced by changes in Internet usage. We describe a model that estimates global impacts for different scenarios of Internet usages and technological hypothesises, and show that it can overcome some limitations of intensity indicators. We experiment the model on four use‐cases: basic usage, video streaming, large downloads, and video conferencing. Results show that increasing the resolution of videos does increase the total energy consumption while misleadingly decreasing the power intensity indicator at the same time. In other words, a more efficient network does not necessarily mean less energy consumption. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
47. Packet reception algorithm for redundant data links in transport drones.
- Author
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Lim, Sung‐Ho, Lee, Jong‐Hun, Seong, Kilyoung, and Kim, Jae‐Kyung
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DATA transmission systems ,ACQUISITION of data ,PRICE increases ,ALGORITHMS ,COMPUTER software - Abstract
In a drone system with dual data links, this article presents a redundant data processing algorithm that can minimize flight control instability without increasing the weight and price of the aircraft by software processing of duplicate received messages. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
48. Analysis and performance evaluation of computation models for node localization in deep sea using UWSN.
- Author
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Kumar, Manni, Goyal, Nitin, Singh, Ashutosh Kumar, Kumar, Rakesh, and Rana, Arun Kumar
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WIRELESS sensor networks , *PLATE tectonics , *RADIO frequency , *DATA transmission systems - Abstract
Summary: Underwater wireless sensor network (UWSN) connects the real world to the hidden resources available deep into the sea using sensor nodes deployed sparsely and are interconnected to gather information for any movement/change in the ocean. The computed information on nodes obtained from concurrently running UWSN's applications will be meaningful, only if the location of this change will be identified. Nevertheless, it is always difficult to obtain the exact location coordinates of any misadventure like tectonic plate's movement but using localization algorithms in UWSN helps to obtain the coordinates. Since localization algorithms for terrestrial networks are not feasible for UWSN because of environmental challenges. Moreover, GPS systems do not work after 15 m of depth and the radio frequency gets suppressed. So, the requirement arises to analyze existing localization approaches in the deep sea where acoustic signals are used for communication and data transfer. In this paper, along with describing the UWSN's applications and challenges, the underwater localization schemes are reviewed to present, summarize, and mention the scope of improvement. Further, classification into range‐based and range‐free categories of these schemes is depicted with implementation in the NS2.30 simulation environment of some of the recent techniques to showcase the reasons for better performance. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
49. A novel DbneAlexnet with Gazelle Hunting Optimization Algorithm enabled wild animal detection in WMSN data communication in IoT environment.
- Author
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Rajaretnam, Subraja and Yesodharan, Varthamanan
- Subjects
- *
OPTIMIZATION algorithms , *GAZELLES , *DATA transmission systems , *IDENTIFICATION of animals , *INTERNET of things , *DEEP learning , *DEER hunting , *AGRICULTURAL technology - Abstract
Summary: The main goal of this strategy is to detect the occurrence of wild animals in farmsteads and human habitats using an improved deep learning in order to avoid loss of life and damage to agricultural crops. This paper formulates a technique for recognizing wild animals in an Internet of Things (IoT) environment utilizing deep batch normalized exponential linear unit AlexNet (DbneAlexnet) and the Gazelle Hunting Optimization Algorithm (GHOA). The IoT‐Multimedia Sensor Networks (WMSN) network is first simulated, with the IoT nodes capturing the images needed for wild animal identification. The suggested GHOA is used for routing, which sends the captured images to the base station (BS). The input wild animal image is transmitted to image preprocessing at the BS, where it is processed using the Weiner filter (WF) to remove undesirable noise from the image. The denoised output is sent into salient map extraction, which extracts salient map to determine the regions that are conspicuous or noticeable at every place in the field of vision and guides the selection of attended location. Finally, the saliency map is forwarded to DbneAlexnet for detecting the wild animals, where the DbneAlexnet is trained using proposed GHOA. The suggested GHOA algorithm is created by combining the Gazelle Optimization Algorithm (GOA) and the deer hunting optimization algorithm (DHOA). Furthermore, detection is appraised by precision, recall, and f1‐score, which provide values of 90.2%, 89.1%, and 89.6%, respectively. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
50. Secured and energy aware cluster‐based routing in cross‐layer–cross‐domain WSN.
- Author
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Lahane, Shivaji R. and Lahane, Priti S.
- Subjects
- *
MULTICASTING (Computer networks) , *WIRELESS sensor networks , *DATA transmission systems , *MOBULIDAE , *POWER resources , *RISK-taking behavior , *UBIQUITOUS computing - Abstract
Summary Wireless sensor networks (WSNs) are becoming increasingly important and well liked for delivering pervasive computing environments for a range of applications. Extending the networking life lifetime in WSNs is an important issue that must be addressed. Effective techniques for conserving the WSN's limited energy resources must be developed. Cross‐layer protocols are employed in WSNs to solve network lifespan difficulties. This paper proposes a new cross‐layer–cross‐domain routing scheme with stages such as “(1) network association stage, (2) nearer node detection phase, and (3) consistent state phase.” In the consistent stage, the optimal cluster head selection (CHS) is carried out by taking into account risk, delay, energy, trust, and distance. A new model called manta ray collided dwarf mongoose optimization (MRC‐DMO) is introduced to help with this. Furthermore, the routing is accomplished by dependable data communication. The results obtained establish the effectiveness of the MRC‐DMO scheme for SEACRCLCD in WSN over varied methods. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
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