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检索条件"任意字段=IEEE International Conference on Distributed Computing in Sensor Systems"

共 30781 条记录，以下是4741-4750 订阅

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Centrality and Scalability Analysis on distributed Graph of Large-Scale E-mail Dataset for Digital Forensics 8

Centrality and Scalability Analysis on Distributed Graph of ...

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8th ieee international conference on Big Data (Big Data)

作者： Ozcan, Selim Astekin, Merve Shashidhar, Narasimha K. Zhou, Bing Sam Houston State Univ Dept Comp Sci Huntsville TX 77340 USA TUBITAK BILGEM Informat Technol Inst Kocaeli Turkey Ozyegin Univ Dept Comp Sci Istanbul Turkey

ISBN: (纸本)9781728162515

Today's digital forensics software tools mostly do not offer automatic analysis methods to reveal evidences among huge amounts of digital files within hard disk images. It is important that finding evidence in digital and cyber forensics investigations as soon as possible by examining hard disk images. E-mails constitute a rich source of information in hard disk images, and they are the most possible data source to obtain an evidence. The analyzers search e-mail files by manually or using traditional methods in order to find an evidence. However, this operation could take a long time due to the size of the e-mail data which can contain a huge number of files and a huge volume of data. This study introduces an end-to-end distributed graph analysis framework for large-scale digital forensic datasets, and evaluates the accuracy of the centrality algorithms and the scalability of the proposed framework in terms of running time performance. The framework is comprised of specific processes to perform pre-processing, graph building, and algorithm activities. An architecture is introduced based on distributed big data techniques. Three different centrality algorithms are implemented to analyze the accuracy of our framework. Further, three implementations are provided to demonstrate the running time performance of our framework. Experiments are performed on Enron e-mail dataset to analyze the centrality algorithms, to evaluate the performance of the framework, and to compare the running times between the traditional approach and our approach. Moreover, the running time performance of the framework is evaluated under various parallelization level. The accuracy of the results is also evaluated and compared between the centrality algorithms. The comparison shows that some certain algorithms provide more accurate results and it is possible to improve the running time by orders of magnitude utilizing our end-to-end distributed graph analysis approach.

关键词： graph analysis centrality measurement runtime comparison scalability distributed systems big data digital forensics e-mail forensics

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Joint 2-D Angle Estimation using TDOA in distributed Multi-antenna System

Joint 2-D Angle Estimation using TDOA in Distributed Multi-a...

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2020 ieee international conference on Power, Intelligent computing and systems, ICPICS 2020

作者： Liu, Yandu Jiao, Yiwen Ma, Hong Space Engineering University Department of Electronic and Optical Engineering Beijing China

ISBN: (纸本)9781728198736

A joint 2-D angle estimation algorithm based on TDOA is proposed in this paper for multi-antenna system, which can solve the problem of using it in tracking system, such as limited estimation accuracy and inapplicability of wideband signals. Based on the principle of least squares, this algorithm comprehensively utilizes multiple baseline measurements to perform iterative calculations, which effectively improves the estimation accuracy and does not require ambiguity solving. The CRLB and RMSE expressions of the algorithm are derived. Also the angle measurement performance of the algorithm is discussed. Simulation results verify the correctness and effectiveness of the algorithm. The algorithm takes into account both the estimation accuracy and the algorithm complexity, and the angle estimation accuracy is close to CRLB. © 2020 ieee.

关键词： Time difference of arrival

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PotatoScanner - A Mobile Delay Tolerant Wireless sensor Node for Smart Farming Applications 15

PotatoScanner - A Mobile Delay Tolerant Wireless Sensor Node...

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15th Annual international conference on distributed computing in sensor systems (DCOSS)

作者： Gernert, Bjoern Schlichter, Jan Wolf, Lars Tech Univ Carolo Wilhelmina Braunschweig Inst Operating Syst & Comp Networks Braunschweig Germany

ISBN: (纸本)9781728105703

Smart Farming has the goal to support farmers in their various activities, i.e., achieve best results in quality and quantity of their products, with low and efficient resource usage, working in sustainable manners etc. For that, a lot of information is needed, e.g., about the current state of the monitored agricultural area. Typically this requires a large number of sensors which collect important sensor data at predefined intervals. For further evaluation such data is usually processed in a central place, for which it must first be transferred from the field to a data sink at the farm premises. Cellular networks could be used for such data transmissions, but the network deployment in rural areas is costly with less likely revenues. Thus, mobile operators are not eager to roll out their networks in rural areas so that they are often not well covered. In this paper we introduce PotatoScanner, a mobile Delay Tolerant Wireless sensor Node (DTWSN) that closes this gap and acts with the help of a field sprayer as a data mule for the collected data. In addition, PotatoScanner itself has sensors to obtain further information about the cultivated field. The paper provides an overview of the overall system and analyses the measurement data obtained in real operation over the past two years 2017 and 2018.

关键词： wireless sensor networks delay tolerant networking wireless sensor nodes smart farming precision farming field sprayer

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2020 2nd international conference on Embedded and distributed systems, EDiS 2020

2020 2nd International Conference on Embedded and Distribute...

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2nd international conference on Embedded and distributed systems, EDiS 2020

ISBN: (纸本)9781728175034

The proceedings contain 30 papers. The topics discussed include: versatile software framework for the monitoring and control of distributed computing systems;a new levy flight trajectory-based grasshopper optimization algorithm for multi-objective optimization problems;quality of context in the internet of things: parameters and models;the impact of products exchange in multi-levels multi-products distribution network;multiuser access via OFDMA technology in high density ieee 802.11ax WLANs: a survey;and dynamic clustering approach for run-time applications mapping on NoC-based multi/many-core systems.

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High-Speed, Real-Time, Spike-Based Object Tracking and Path Prediction on Google Edge TPU

High-Speed, Real-Time, Spike-Based Object Tracking and Path ...

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2nd ieee international conference on Artificial Intelligence Circuits and systems (AICAS)

作者： Sengupta, Jonah Kubendran, Rajkumar Neftci, Emre Andreou, Andreas Johns Hopkins Univ Baltimore MD 21218 USA Univ Calif San Diego La Jolla CA 92093 USA Univ Calif Irvine Irvine CA USA

ISBN: (纸本)9781728149226

As computation and advanced high-dimensional signal processing is pushed to edge computational devices, energy efficient, unconventional architectures are needed to ameliorate this growing need. The Google Edge TPU, first used on a Cloud platform, is one such accelerator that is now commercially available for consumer use. Similarly, low-power, data-efficient vision sensors, such as the Dynamic Vision sensor (DVS), have been developed and commercialized as well to improve upon the large data redundancy seen in these ML applications. This live demonstration is linking these two technologies to benchmark the Coral Edge TPU Board in a high-speed object tracking and prediction application. In comparison to a floating point architecture of similar form factor, the Intel Compute Stick, the Edge TPU has been show to outperform in terms of latency and computational efficiency.

关键词： Edge computing Tensor Processing unit (TPU) Dynamic Vision sensor (DVS)

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distributed Ledger Technology for Securing IoT 11

Distributed Ledger Technology for Securing IoT

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11th international conference on computing, Communication and Networking Technologies, ICCCNT 2020

作者： Panda, Soumyashree S. Mohanta, Bhabendu Kumar Dey, Meenu Rani Satapathy, Utkalika Jena, Debasish IIIT Department of Computer Science and Engineering Bhubaneshwar Odisha751003 India IIT Department of Computer Science and Engineering Guwahati Assam781039 India

ISBN: (数字)9781728168517

ISBN: (纸本)9781728168517

computing and communication are getting increasingly ubiquitous with the inclusion of sophisticated devices like electric vehicles, smart phones and other house hold appliances. Due to the constant evolution in Internet of Things (IoT), the process of collaboration of these devices at a mass scale in order to provide improved and better services to the society. Traditional mechanisms which are used to sustain privacy and security become incapable from achieving the same for IoT systems having distributed or decentralized topology. distributed Ledger Technologies (DLT), an emerging digital technology, consists of different kinds of decentralized data structures to ensure immutability by linking blocks using cryptographic measures. DLT has the ability to ensure privacy, security and distributed or decentralized computations with adhering to the constraints of IoT nodes. This study is motivated due to the lack of an in-depth analysis on how the characteristics of DLT can be exploited to secure IoT systems. So, an in depth overview of DLT along with some of the existing solutions to meet security requirements of IoT systems employing DLT have been provided in this paper. With respect to integrating DLT with IoT, this article also highlights the different challenges. © 2020 ieee.

关键词： Internet of things

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Urban Safety as a Service During Bike Navigation: My Smartphone Can Monitor My Street-lights 6

Urban Safety as a Service During Bike Navigation: My Smartph...

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6th ieee international conference on Smart computing (SMARTCOMP)

作者： Alam, Munshi Yusuf Anurag, Harshit Imam, Md Shahrukh Saha, Sujoy Saha, Mousumi Nandi, Subrata Chakraborty, Sandip Natl Inst Technol Durgapur Dept CSE Durgapur 713209 India Indian Inst Technol Kharagpur Dept CSE Kharagpur 721302 W Bengal India

ISBN: (纸本)9781728169972

Existing street light monitoring systems use vehicle-borne sensor platforms, LiDAR etc. which are obtrusive for in-the-wild deployments. In this paper, we propose BikeL;a crowd sensed system to monitor street lighting conditions in a novel approach using smartphone sensors during Bike navigation. We identify the underlying issues and challenges from pilot experiments to make the system phone-invariant, robust, and user-friendly. We used regression models and unsupervised clustering to resolve these issues. We have carried out extensive experiments under various road type illumination scenarios and phones type covering more than 400 km. Over 80 night trips collecting 10,000 functional light pole samples to tune the system parameters. Results show that the overall system successfully detects both functioning and non-functioning light poles with good accuracy (F1 score > 0.85) and can produce uniformly calibrated illumination levels. This viable, economical, and easy to deploy solution can work effectively for under-developed regions of low and middle-economy countries.

关键词： light sensor urban light monitoring smartphone street light safety

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Gramians Computation for Parabolic distributed Parameter systems

Gramians Computation for Parabolic Distributed Parameter Sys...

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2020 international conference Automatics and Informatics, ICAI 2020

作者： Perev, Kamen Technical University of Sofia Systems and Control Department Sofia Bulgaria

ISBN: (纸本)9781728193083

The paper considers the problem of gramians computation for linear parabolic distributed parameters systems like the heat flow in a rod. The solution of the described partial differential equation is derived by applying the approach of time-space separation and by using the spectral method. By analogy to the finite dimensional case, it is shown that the derived solution consists of two parts. The first part is due to the initial conditions and participates in forming the observability gramian of the system. The second part is due to the system input and takes part in computing the reachability gramian. Different cases for problem definition in terms of different boundary conditions are given, showing how in such cases, the presented method can be used for gramians computation. © 2020 ieee.

关键词： Spectroscopy

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DC and AC Active Power filters for distributed Photovoltaic Grid System 6

DC and AC Active Power filters for Distributed Photovoltaic ...

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6th ieee international conference on Electronics, computing and Communication Technologies, CONECCT 2020

作者： Narasimhan, Abhilash Swelect Energy Systems Chennai India

ISBN: (纸本)9781728168289

Decentralized and distributed Generation of solar power is one of the fastest growing models of power generation across the world. Harmonics are generated because of the presence of non-linear and small industrial type loads connected to these sources. This work presents active DC and AC power filters to reduce the harmonics of the same. The design aspects, modelling and simulation of the filters have been performed. The entire system consisting of solar power generating array, DC loads, 3 phase inverter and the AC loads have been modelled to review the performance of the filter in the presence of the variable loads. The DC filter is an active filter that is controlled by a PI controller to stabilize the DC voltage. The AC filter is a three phase PWM rectifier based filter where the switching is controlled based on the generated current reference. A Matlab/Simulink simulation was carried out to analyze the performance of the same. © 2020 ieee.

关键词： Solar energy

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Homomorphic Multicast Group Key Management Using Routing Protocol for Low Power and Lossy Networks

Homomorphic Multicast Group Key Management Using Routing Pro...

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international conference on Intelligent computing and Control systems (ICICCS)

作者： Ajmani, Dashmeet Kaur Srivastava, Apoorv D'souza, Joel Abraham, Jibi Coll Engn Comp Engn Pune Maharashtra India

ISBN: (纸本)9781728148762

Group key management for any secure multicast architecture is an essential functional building block which is a security measure just as important as encryption and authentication. Broadly speaking, two main functional entities manage the security of a multicast session: a Group Controller (GS) responsible for authorization, authentication, and access control, and a Key Server (KS) responsible for maintaining and distributing the required key material. Whenever a service provider sends a multicast content, it is encrypted using a Traffic Encryption Key (TEK) that legitimate members can decrypt on delivery of multicast content. To prevent a leaving or an expelled member from the group from continuing to decrypt the secret multicast messages, the KS generates a new TEK and securely distributes it to the remaining members of the group except the one left. Due to the inherent resource limitation of Internet of Things (IoT) devices, these security protocols cannot be extended as is for IoT devices and sensor nodes. How to securely generate and distribute the new TEK without disruption of service and degradation of network performance remains a major challenge. This work aims at providing a solution in group key management for IoT devices to the aforementioned gap. The proposal is to manage keys for multiple nodes belonging to multiple groups using Routing Protocol for Low Power and Lossy Networks (RPL) to build topology and add to it the ability of Multigroup Key Management using Key Store and Homomorphic encryption. Our solution is using Paillier Encryption scheme to produce keys. These keys are stored in the Keystore. These keys would be distributed to the root controller nodes, which are RPL DODAG roots, and these root nodes will distribute it to their respective nodes in a group. The cases of members leaving groups and joining groups also has been handled.

关键词： group key management IoT low power and lossy networks wireless sensor nodes rpl routing protocol resource constraints keystore homomorphic cryptography paillier cryptosystems cooja simulator contiki os

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