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A smooth recursive frequency-splitting scheme for broadcasting VBR-encoded hot videos

7th IEEE International Conference on High Speed Networks and Multimedia Communications, HSNMC 2004

作者： Yu, Hsiang-Fu Yang, Hung-Chang Chen, Yi-Ming Tseng, Li-Ming Dep. of Computer Science and Information Engineering National Central University Taiwan Computer Center National Central University Taiwan Dep. of Information Management National Central University Taiwan

ISBN: (纸本)3540222626

One way to broadcast a popular video is to partition the video into segments, which are broadcasted on several streams periodically. The approach lets multiple users share streams;thus, the stress on the scarce bandwidth can be alleviated without sacrificing viewers’ waiting time. The segment partition can be categorized into two types: vertical and horizontal. One representative scheme based on vertical segmentation is the recursive frequency-splitting (RFS) broadcasting, which has the smallest waiting time in the literature. Based on the scheme, we propose a smooth RFS (SRFS) scheme, which can broadcast VBR-encoded videos smoothly. By dynamically arranging portions of the segments on the streams, the approach reduces the peak bandwidth consumption and the variance. Finally, we conducted a simulation to evaluate our scheme. The results indicate that the SRFS outperforms the RFS scheme on reducing the bandwidth variance and peak. The reductions can even reach 96% and 12%. The overhead is slightly higher average bandwidth. © Springer-Verlag Berlin Heidelberg 2004.

关键词： Bandwidth

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Logistic Regression Classification for Assessing the Risk of Kidney Tumor 2

Logistic Regression Classification for Assessing the Risk of...

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2nd International engineering Conference on Electrical, Energy, and Artificial Intelligence, EICEEAI 2023

作者： Alzubi, Dalia Al Mamlook, Rabia Emhamed Nasayreh, Ahmad Aljaidi, Mohammad Alazab, Rami Gharaibeh, Hasan Al-Naamneh, Qais Concordia University Dep. Information and Systems Engineering Montreal Canada Trine University Dep. of Business Administration IN United States University Zawia Department of Industrial Engineering Tripoli Libya Yarmouk University Dep. Computer Science Irbid Jordan Zarqa University Dep. of Computer Science Zarqa Jordan Jordan University of Science and Technology Dep. Surgery and Urology Irbid Jordan Applied Science Private University Dep. of Cyber Security Amman Jordan

ISBN: (纸本)9798350373363

The kidneys have the important function of filtering waste products and toxins from the blood in the human body. Any problems affecting the kidneys can potentially impact their efficiency and overall function. Kidney Tumor (KT) is a disease that specifically affects kidney cells and causes the abnormal growth of tissue in one or both kidneys. Assessing the risk of developing a kidney tumor and identifying the key factors that contribute to this risk are crucial for ensuring patient well-being. Additionally, this information assists doctors and specialists in making faster and more accurate diagnoses, determining appropriate treatment methods, and potentially influencing the course of the disease to minimize its severity and impact. Machine learning algorithms have recently been introduced to evaluate disease risks, and in this study, we specifically focus on examining the risk of kidney tumor development and investigating the influencing factors. We employed a logistic regression model to predict if a patient is at risk of developing a kidney tumor or not, and further categorized the samples into high-risk and low-risk groups. Our model was trained and tested using a unique dataset obtained from the (KAUH) hospital in Jordan, consisting of well-balanced metadata from 120 patients with kidney issues. Our work demonstrated accuracy results ranging from 90% to 98%. Ultimately, specialists can utilize our model as an additional tool to enhance the speed and accuracy of patient diagnoses © 2023 IEEE.

关键词： Tumors

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[Short paper] understanding the user experience of secure mobile online transactions in realistic contexts of use

[Short paper] understanding the user experience of secure mo...

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8th Symposium on Usable Privacy and Security, SOUPS 2012

作者： Angulo, Julio Kling, Daniel Wästlund, Erik Tavemark, Daniel Gullberg, Peter Fischer-Hübner, Simone Dep. of Information Systems Karlstad University Sweden Dep. of Psychology Karlstad University Sweden Gelmalto Gothenburg Sweden Dep. of Computer Science Karlstad University Sweden

ISBN: (纸本)9781450315326

Possible attacks on mobile smart devices demand higher security for applications handling payments or sensitive information. The introduction of a tamper-proof area on future generations of mobile devices, called Trusted Execution Environment (TEE), is being implemented. Before devices with embedded TEEs can be dep.oyed to the public, investigations on usability aspects of Trusted User Interfaces (TUI) are needed. This article describes the process we have followed at gathering requirements, prototyping and testing suitable designs for TUIs in combination with a touch-screen biometric system. At the end, we present relevant findings of a pilot study that we have conducted using an Experience Sampling Method (ESM) as part of our ongoing work.

关键词： Touch screens

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A Memory-Based Collaborative Filtering Recommender System Using Social Ties 4

A Memory-Based Collaborative Filtering Recommender System Us...

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4th International Conference on Pattern Recognition and Image Analysis, IPRIA 2019

作者： Zarei, Mohammad Reza Moosavi, Mohammad Reza Dep. of Computer Science and Engineering School of Electrical and Computer Engineering Shiraz University Shiraz Iran

ISBN: (纸本)9781728116211

Recent studies have illustrated that social networks are valuable sources of information which can be used for various purposes. In recommender systems, researchers have been motivated to utilize social information not only to enhance the prediction accuracy, but also to address the data sparseness challenges such as cold start problem. In this paper, we propose a social memory-based Collaborative Filtering (CF) approach and examine the impact of integrating social ties on both accuracy and prediction coverage. A simple learning method is used to tune the contribution of social information, in the proposed similarity measure, as a weight parameter. We compared our experimental results with several state-of-the-art memory-based and model-based CF approaches using Epinions dataset to investigate the performance of our method in extreme sparsity of real-world data. Results show that our approach provide high accuracy as well as reasonable prediction coverage comparing with other methods. © 2019 IEEE.

关键词： Recommender systems

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A Support Vector Regression based Machine Learning method for on-chip Aging Estimation 4

A Support Vector Regression based Machine Learning method fo...

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4th IEEE International Conference on Computing and information sciences, ICCIS 2021

作者： Alnuayri, Turki Martinez, A. Leonel Hernandez Khursheed, Saqib Rossi, Daniele University of Liverpool Dep. of Electrical Engineering and Electronics Liverpool United Kingdom Dep. of Computer Engineering Taibah University Medina Saudi Arabia University of Pisa Dep. of Information Engineering Pisa Italy

ISBN: (纸本)9781665494410

Semiconductor supply chain industry is spread worldwide to reduce cost and to meet the electronic systems high demand for ICs, and with the era of internet of things (IoT), the estimated numbers of electronic devices will rise over trillions. This drift in the semiconductor supply chain produces high volume of e-waste, which affects integrated circuits (ICs) security and reliability through counterfeiting, i.e., recycled and remarked ICs. Utilising recycled IC as a new one or a remarked IC to upgrade its level into critical infrastructure such as defence or medical electronics may cause systems failure, compromising human lives and financial loss. This paper harvests aging degradation induced by BTI and HCI, observing frequency and discharge time affected by changes in drain current and sub-threshold leakage current over time, respectively. Such task is undertaken by Cadence simulations, implementing a 51-stage ring oscillator (51-RO) using 22nm CMOS technology library and aging model provided by GlobalFoundries (GF). Machine learning (ML) algorithm of support vector regression (SVR) is adapted for this application, using a training process that involves operating temperature, discharge time, frequency, and aging time. The data sampling is performed over an emulated 12 years period with four representative temperatures of 20° C, 40° C, 60° C, and 80° C with additional testing data from temperatures of 25° C and 50° C. The results demonstrate a high accuracy on aging estimation by SVR, reported as a normal distribution with the mean (μ) equal to 0.01 years (3.6 days) and a standard deviation (σ) of ±0.1 years (±36 days). © 2021 IEEE.

关键词： Integrated circuits

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Recent architectural developments for reducing power consumption and increasing performance

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Recent Patents on computer science 2016年第1期9卷 89-98页

作者： Ozkul, Tarik Tuffaha, Mohammed A. Elhiny, Lamees Computer Science and Engineering Dep. American University of Sharjah P.O. Box 26666 Sharjah United Arab Emirates

Background: Power consumption has become one of the most serious obstacles ahead of performance increase. Due to increased power consumption, increasing number of transistors does not seem to be viable anymore. We are being forced to consider other ways of increasing performance without increasing power consumption. To find solution to the problem, the power consumption issue is being looked at more and more carefully at architectural level. Methods: Recent publications and patent databases are reviewed to find extraordinary and innovative architectural techniques developed for reducing power consumption and increasing performance. Results: In most of the cases the focus was specifically on memory area because of the studies that indicated that memory is the biggest power consumer in a typical processor system. The focus of the most methods was also on the cache memory part of the processor system since cache memory is a part that is used with every instruction execution. Any reduction in power cost of the cache memory results in sizable power reduction. Among the methods suggested were techniques of linking cache memory cells to reduce number of operations, reducing size of the cache memory by using multiple small cache memories activated one at a time. Conclusion: Based on the study it can be concluded that future innovative developments to reduce power consumption should concentrate on: a) Main memory part: to reduce the power consumption of main memory by turning on/off unused blocks of memory without effecting performance, b) Cache memory part: use of cache memory efficiently without decreasing performance, c) Efficient multiprocessing architectures. By integrating above mentioned methods to multiprocessors it may be possible to reduce the power consumption further. © 2016 Bentham science Publishers.

关键词： Cache memory

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Shape-based interpolation of CT image with window technology

Shape-based interpolation of CT image with window technology

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2010 International Conference on computer Application and System Modeling, ICCASM 2010

作者： Zhuang, Qiaoli Shen, Wei Sun, Qi Li, Yurong Yang, Shuzhen Zhejiang Sci-Tech University Dep. of Computer Science and Technology Hangzhou China Dep. of Computer Science and Technology North University Taiyuan China Zhejiang Changzheng Vacational and Technical College Dep. of Information Hangzhou China

ISBN: (纸本)9781424472369

In this paper,we propose an shape-based interpolation algorithm using window *** aim of this algorithm is to reconstruct the three-dimensional object from a group of two-dimensional sets representing sections of that ***,the window technology and image fusion method are used to get more details what we are interested in of consecutive sets,and then the contour of the image is obtained by using a mathematical morphology morphing approach,for locating the pixels which are corresponding with the interpolation pixels,we employ the relationship between the pixel and the centre of ***,the grey-level of interpolation pixels are the grey-level of the nearest corresponding pixels. Traveling all pixels of the interpolation image,the interpolation image is produced.

关键词： Interpolation

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Generating UML models from domain patterns

Generating UML models from domain patterns

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3rd ACIS International Conference on Software engineering Research, Management and Applications, SERA 2005

作者： Kim, Dae-Kyoo Whittle, Jon Dep. of Computer Science and Engineering Oakland University Rochester MI 48309 United States Dep. of Information and Software Engineering George Mason University Fairfax VA 22030 United States

ISBN: (纸本)0769522971

The development of a family of applications in a domain can be greatly eased if patterns in the domain are systematically reused. Systematic use of such patterns can be achieved by tools that support the specification of patterns and their instantiation in a specific application context. In this paper, we present a prototype tool called RBML-Pattern Instantiator (RBML-PI) that generates application-specific UML class diagrams and sequence diagrams from a pattern specification described in the Role-Based Metamodeling Languag e (RBML), a pattern specification language defining a domain-specific sub-language of the UML. We give an overview of the RBML using the Visitor design pattern, and demonstrate the tool using an RBML specification for the CheckIn-CheckOut(CICO) domain pattern that specifies services to check in and check out items. We use the CICO pattern specification to generate an application-specific UML model of a library system using RBML-PI. © 2005 IEEE.

关键词： computer programming languages

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A generalization of the carries process 26

A generalization of the carries process

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26th International Conference on Formal Power Series and Algebraic Combinatorics, FPSAC 2014

作者： Fujita, Takahiko Nakano, Fumihiko Sadahiro, Taizo Faculty of Science and Engineering Dep. of Industrial and Systems Engineering Chuo University Tokyo Japan Dep. of Mathematics Gakushuin University Tokyo Japan Dep. of Information Science Tsuda Collge Tokyo Japan

We consider a carries process which is a generalization of that by Holte in the sense that (i) we take various digit sets, and (ii) we also consider negative base. Our results are: (i) eigenvalues and eigenvectors of the transition probability matrices, and their connection to combinatorics and representation theory, (ii) an application to the computation of the distribution of the sum of i.i.d. uniform r.v.'s on [0, 1], (iii) a relation to riffle shuffle. © 2014 Discrete Mathematics and Theoretical computer science (DMTCS), Nancy, France

关键词： Combinatorial mathematics

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Using role determination and expert mining in the enterprise environment

Using role determination and expert mining in the enterprise...

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17th Text REtrieval Conference, TREC 2008

作者： Yao, Jing Xu, Jun Niu, Junyu Computer Science and Engineering Dep. Fudan University Shanghai 200433 China

In real world, expert search is not just only name matching. Since each kind of people has their own features, we try two methods to judge whether the person we have found is more likely to be an expert. One method is to determine the role of a person by the context of the pages;the other is to judge the authority of a person by the forms of pages where he appears considering the structure of the Intranet. The evaluation results show these new methodologies have been helpful to improve the performance of the expert search on TREC 08 queries.

关键词： Intranets

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