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31st Annual International computer Software and Applications Conference, COMPSAC 2007

作者： Lu, Chih-Wei Chu, William C. Chang, Chih-Hung Wang, Ching Huey Dept. of Information Management Hsiuping Institute of Technology Taiwan Dept. of Computer Science and Information Engineering Tunghai University Taiwan Dept. of Computer Science National Chiao Tung University Taiwan

ISBN: (纸本)9780769528700

Most requirement documents were written in ambiguous natural languages which are less formal and imprecise. Without modeling the requirement documents, the knowledge of the requirement is hard to be kept in a way, which can be analyzed and integrated with artifacts in other phases of software life cycle, e.g. UML diagrams in analysis and design phases. Therefore, maintaining the traceability and consistency of requirement documents and software artifacts in other phases is costly and error prone. In this paper, we propose a Model-based Object-oriented approach to Requirement engineering (MORE). Applying modeling and OO technologies to requirement phases, the domain knowledge can be captured in a well-defined model, so the completeness, consistency, traceability and reusability of requirement and its integration with the artifacts of other phases can be cost effectively improved. A case study has shown the promise of our approach. © 2007 IEEE.

关键词： Object oriented programming

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Performance Analysis of Deep Learning Algorithms for Intrusion Detection in IoT

Performance Analysis of Deep Learning Algorithms for Intrusi...

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2021 International Conference on Communication, Control and Information sciences, ICCISc 2021

作者： Jose, Jinsi Jose, Deepa V. Dept. of Computer Science Bangalore India

ISBN: (纸本)9781665412797

Due to the wide availability of IoT devices at affordable cost and the ease of use has increased IoT devices increased usage. Due to the enormous usage of the Internet of Things (IoT) devices, the security aspects related to the data are also a significant concern in this data-driven world. Negligence of security measures from users can result in severe data falsification or data thefts. In this scenario, the Intrusion Detection System has a pivotal role in IoT security. Incorporating the deep learning techniques is an effective way to predict various attacks, either known or unknown. This paper highlights the various security threats associated with IoT, the importance of deep learning in IoT intrusion detection, and various IoT intrusion detection systems using deep learning. Comparative analysis of the different deep learning techniques was performed. The results have shown Convolution Neural Networks gave high accuracy in prediction based on various evaluation metrics. © 2021 IEEE.

关键词： Internet of things

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DETECTION OF ULTRASONIC FLAW SIGNALS USING WAVELET TRANSFORM TECHNIQUES

DETECTION OF ULTRASONIC FLAW SIGNALS USING WAVELET TRANSFORM...

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IEEE 1992 ULTRASONIC SYMP

作者： XIN, J MURTHY, R LI, X BILGUTAY, NM Electrical and Computer Engineering Dept. Drexel University Philadelphia 19104 PA United States Electronic Engineering Dept. Tsinghua University Beijing 10084 China

ISBN: (纸本)0780305620

Ultrasonic detection and identification of flaws embedded in large-grained materials is often limited by the presence of high amplitude interfering echoes due to unresolvable grain boundaries. The Split Spectrum Processing (SSP) technique using nonlinear algorithms has been shown to be very effective in grain noise suppression and flaw detection. This technique creates an ensemble of frequency diverse narrowband signals by windowing the spectrum of the received signal using bandpass filters with fixed window bandwidths. In this paper, the wavelet transform technique is used to perform the spectral decomposition, followed by the application of various nonlinear algorithms to obtain the output signal. The wavelet transform, which is based on the principle of constant Q or constant relative bandwidth frequency, is widely used for the analysis of nonstationary signals. Experimental results for the constant-Q SSP technique are presented. The experimental data indicates improved performance in identifying and extracting multiple targets compared to the conventional fixed bandwidth SSP. © 1992 IEEE.

关键词： Bandwidth

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Multistage interference cancellation with diversity reception for QPSK asynchronous DS/CDMA system over multipath fading channels

Multistage interference cancellation with diversity receptio...

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1999 IEEE International Conference on Communications, ICC 1999

作者： Weng, Jianfeng Xue, Guoqiang Le-Ngoc, Tho Tahar, Sofiène Dept. of Electrical and Computer Engineering Concordia University Canada

ISBN: (纸本)078035284X

A multistage interference cancellation (MIC) technique with Rake diversity (MIC-Rake) for QPSK asynchronous direct sequence code division multiple access (DS/CDMA) system over frequency selective multipath Rayleigh fading channels is presented. Unlike the conventional MIC, which tries to subtract the lump sum of the multiple-access interference (MAI) and the self-interference (SI), the MIC-Rake attempts to cancel the Mil and the partial SI, and to treat the residual SI as useful signal for symbol decision. The Rake combining is employed to collect signal replicas over multiple fading paths. The upper and lower bounds on the bit error probability are derived by using a Gaussian approximation. Furthermore, the effect of the channel estimation error is studied. Analysis and simulation show that the MIC-Rake can provide a performance close to the ideal performance of single-user system, and outperforms the conventional MIC even in the presence of channel estimation error. © 1999 IEEE.

关键词： Quadrature phase shift keying

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A permission system for secure AOP 10

A permission system for secure AOP

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9th International Conference on Aspect-Oriented Software Development, AOSD.10

作者： De Borger, Wouter De Win, Bart Lagaisse, Bert Joosen, Wouter Dept. of Computer Science KULeuven Belgium

ISBN: (纸本)9781605589589

The integration of third-party aspects into applications creates security challenges. Due to the intrusive impact of aspects, one cannot guarantee that the dynamic composition of aspects does not lead to misbehavior. The newly composed aspect typically has many, if not unrestricted, rights to read and modify attributes of the base system. AspectJ, amongst other AOP systems, suffers from this limitation, which makes the composition of independently developed aspects riskful. We have defined and prototyped a run-time policy enforcement model based on execution history to protect programs from untrusted aspects. The dynamic nature of the approach has the advantage that up to date run-time information allows more accurate decision making. We have built a prototype for AspectJ and illustrate its use in a realistic example. Our evaluation shows that practical use of such a solution is feasible and that run-time overhead can be limited. Copyright 2010 ACM.

关键词： Aspect oriented programming

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Converting sensor data into ontology using DOM model in home network

Converting sensor data into ontology using DOM model in home...

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2007 International Symposium on Information Technology Convergence, ISITC 2007

作者： Lim, Wontaek Van Nguyen, Tam Yu, Myonghwan Choi, Deokjai Dept. of Computer Science Chonnam University

ISBN: (纸本)0769530451

Reasoning the sensor data is necessary in context-awareness of home network. For sensing data usually was sent by hex code, it can't directly reason with this data type. So we convert this sensor data into ontology to reason using DOM of XML. We convert the environments information, temperature, humidity, and time, among many sensors into ontology through receiving sensor data every minute. Through reasoning to use this converting information, we will get more accurate context information. © 2007 IEEE.

关键词： Ontology

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ElGamal-based Privacy-Preseving Scheme (EPPS) for Edge-Cloud-of-Things (ECoT) 4

ElGamal-based Privacy-Preseving Scheme (EPPS) for Edge-Cloud...

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4th International Conference on Computational Systems and Information Technology for Sustainable Solution, CSITSS 2019

作者： Jayashree, N. Sathish Babu, B. C Byregowda Institute of Technology Dept. of Computer Science and Engineering Kolar Karnataka India R v College of Engineering Dept. of Computer Science and Engineering Bengaluru Karnataka India

ISBN: (纸本)9781728126197

Edge-Cloud-of-Things (ECoT) is a model that facilitates the communicating nodes with the necessary resources for the data transmissions. The data transmitted in ECoT is done through the nearby IoT devices over the network. This data gets forwarded from edge devices to the heterogeneously distributed edge servers or cloud servers. Therefore, there is a need to ensure privacy of this data along the transmission path. We propose an ElGamal-based Privacy-Preserving Scheme (EPPS) for Edge-Cloud-of-Things to ensure data privacy. ElGamal encryption method is an asymmetric key cryptography based on Diffie-Hellman key exchange, in which the same data results in different ciphertext for each encryption. Due to the nature of this encryption, the privacy is believed to be increased compared to the other techniques. © 2019 IEEE.

关键词： Data transfer

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Scan test of die logic in 3D ICs using TSV probing

Scan test of die logic in 3D ICs using TSV probing

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2012 International Test Conference, ITC 2012

作者： Noia, Brandon Panth, Shreepad Chakrabarty, Krishnendu Lim, Sung Kyu Duke University Dept. Electrical and Computer Engineering Durham NC 27708 United States Georgia Institute of Technology Dept. Electrical and Computer Engineering Atlanta GA 30332 United States

ISBN: (纸本)9781467315951

Pre-bond testing of TSVs and die logic is a significant challenge and a potential roadblock for 3D integration. BIST solutions introduce considerable die area overhead. Oversized probe pads on TSVs to provide pre-bond test access limit both test bandwidth and TSV density. This paper presents a solution to these problems, allowing a probe card to contact TSVs without the need for probe pads, enabling both TSV and pre-bond scan test. Two possible pre-bond scan test configurations are shown - they provide varying degrees of test parallelism. HSPICE simulations are performed on a logic-on-logic 3D benchmark. Results show that the ratio of the number of probe needles available for test access to the number of pre-bond scan chains determines which pre-bond scan configuration results in the shortest test time. Maximum pre-bond scan-in and scan-out shift-clock speeds are determined for dies in a benchmark 3D design. These clock speeds show that pre-bond scan test can be performed quickly, at a speed that is comparable to scan testing of packaged dies. The maximum clock speed can also be tuned by changing the drive strength of the probe and on-die drivers of the TSV network. Estimates are also provided for peak and average power consumption during pre-bond scan test. On-die area overhead for the proposed method is estimated to be between 1.0% and 2.2% for three dies in the 3D stack. © 2012 IEEE.

关键词： Dies

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Multispectral Satellite Data Classification Using Rank Correlation Similarity Index and Automatic Labeling Technique

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SN computer science 2024年第8期5卷 1-20页

作者： Ain, Arindom Gogoi, Minakshi Chutia, Dibyajyoti Dept. of Computer Science and Engineering GIMT Under Assam Science and Technology University Assam Guwahati India Dept. of Computer Science and Engineering Girijananda Chowdhury University Assam Guwahati India NESAC Umium Shillong India

Multispectral satellite image classification is crucial in remote sensing and image analysis, serving various applications like water area extraction, urban region classification, and vegetation monitoring. Model-based classification, particularly supervised learning approaches, heavily relies on manually annotated training samples, which are labor-intensive and subject to human bias. However, solely depending on features derived from individual pixels may fail to capture spatial contextual information effectively and manage mixed pixels and various types of noise, resulting in classification inaccuracies. To address these challenges, this research proposes a novel unsupervised learning approach and automatic labeling technique (ALT). This approach utilizes collective information from groups of pixels instead of relying solely on individual pixels for identification and extraction of meaningful unique patterns which serves as the most significant factor for satellite image classification. A new similarity index, the patch similarity index (PSI), is generated by incorporating the rank correlation similarity index (RCSI). The PSI is used to determine the similarity factor both between the patches and within the patch. Subsequently, a clustering algorithm is employed to group pixels into four distinct classes: vegetation, water, built-ups, and open land. Additionally, ALT streamlines the post-classification process by reducing the need for manual intervention in mapping clusters to the actual class label. The proposed method offers a more accurate and reliable unsupervised classification for multispectral satellite imagery, promising enhanced efficiency and reduced manual labor. © The Author(s), under exclusive licence to Springer Nature Singapore Pte Ltd. 2024.

关键词： Automatic labeling technique Frequent masking Multispectral Patch similarity index Rank Correlation

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Hybrid sensor networks: A small world

Hybrid sensor networks: A small world

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MOBIHOC 2005: 6th ACM International Symposium on Mobile Ad Hoc Networking and Computing

作者： Sharma, Gaurav Mazumdar, Ravi Center for Wireless Systems and Applications School of Electrical and Computer Engineering Purdue University Dept. of Electrical and Computer Engineering University of Waterloo

In this paper, we investigate the use of limited infrastructure, in the form of wires, for improving the energy efficiency of a wireless sensor network. We call such a sensor network - a wireless sensor network with a limited infrastructural support - a hybrid sensor network. The wires act as short cuts to bring down the average hop count of the network, resulting in a reduced energy dissipation per node. Our results indicate that adding a few wires to a wireless sensor network can not only reduce the average energy expenditure per sensor node, but also the non-uniformity in the energy expenditure across the sensor nodes. Copyright 2005 ACM.

关键词： computer networks

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