Journal of Innovation in Digital Ecosystems最新文献_第3页

Effect of selective replication strategy and dynamic admission control to QoS management in video on demand systems 选择性复制策略和动态准入控制对视频点播系统QoS管理的影响

Journal of Innovation in Digital Ecosystems Pub Date : 2015-12-01 DOI: 10.1016/j.jides.2015.11.002

Bechir Alaya, Salah Zidi, Lamri Laouamer, Tarek Moulahi

{"title":"Effect of selective replication strategy and dynamic admission control to QoS management in video on demand systems","authors":"Bechir Alaya, Salah Zidi, Lamri Laouamer, Tarek Moulahi","doi":"10.1016/j.jides.2015.11.002","DOIUrl":"10.1016/j.jides.2015.11.002","url":null,"abstract":"<div><p>Several solutions have been proposed till date to achieve effective replication policies and admission control methods that can ensure a high Quality of Service (QoS) to Video on Demand (VoD) systems. In this paper, we have chosen to study admission control and a replication strategy in a video on demand system called Feedback Control Architecture for Distributed Multimedia Systems (FCA-DMS). The proposed approaches are founded on (i) the supervision and auto-adaptation of the system load, (ii) continued knowledge of the network and of the video servers’ workload, and (iii) the development of a dynamic replication strategy of segments for popular video, that remade to replica-placement problem by discussing the problem of the replicas number to create (Replication Degree). The workload of video servers and of network are calculated by a QoS controller. The proposed approach takes into account of replica detail and offers a replica removal policy to avoid waste and for a good management of storage space. The goal is to maintain an updated broad view of the system’s behaviour from the collected measurements to databases of available videos and databases of available video servers. To demonstrate the efficiency and feasibility of our approaches and validate the results obtained, we conducted a series of experiments based on a simulator that we implemented.</p></div>","PeriodicalId":100792,"journal":{"name":"Journal of Innovation in Digital Ecosystems","volume":"2 1","pages":"Pages 45-54"},"PeriodicalIF":0.0,"publicationDate":"2015-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.jides.2015.11.002","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133161690","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Classification and statistical learning for detecting of switching time for switched linear systems 切换线性系统切换时间检测的分类与统计学习

Journal of Innovation in Digital Ecosystems Pub Date : 2015-12-01 DOI: 10.1016/j.jides.2015.10.002

Lamaa Sellami, Kamel Abderrahim

引用次数: 3

Enhancing digital image integrity by exploiting JPEG bitstream attributes 利用JPEG比特流属性增强数字图像的完整性

Journal of Innovation in Digital Ecosystems Pub Date : 2015-12-01 DOI: 10.1016/j.jides.2015.10.003

Musab Ghadi , Lamri Laouamer , Tarek Moulahi

{"title":"Enhancing digital image integrity by exploiting JPEG bitstream attributes","authors":"Musab Ghadi , Lamri Laouamer , Tarek Moulahi","doi":"10.1016/j.jides.2015.10.003","DOIUrl":"10.1016/j.jides.2015.10.003","url":null,"abstract":"<div><p>The need for protecting a huge amount of digital images on the internet has become an important requirement against different kind of attacks in order to insure transmitted process in a secure way. Cryptography introduces many security goals to achieve privacy of image include confidentiality, authentication and integrity. Encryption process may applied on the result of JPEG DCT-based encoding process, which are DC and AC coefficients, where DC coefficients present the average of the overall magnitude of the input image and AC coefficients present the higher frequency components of image. In this paper, we develop a new model for securing the transmitted images via wireless network by parsing JPEG bitstream to encrypting both DC and AC coefficients in each 8×8 block of image. This work utilizes the features of DCT-based encoding process preserving low complexity, efficient compression, and robustness to protect the image integrity. The experiments result shows that the proposed approach gives an interesting and a significant robustness ratio reaching a range of 60.3 dB for Peak Signal-to-Noise Ratio (PSNR) and a 0.006% for Bit Error Rate (BER) in average. The obtained results are discussed in details.</p></div>","PeriodicalId":100792,"journal":{"name":"Journal of Innovation in Digital Ecosystems","volume":"2 1","pages":"Pages 20-31"},"PeriodicalIF":0.0,"publicationDate":"2015-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.jides.2015.10.003","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133504393","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 9

Robust watermarking scheme and tamper detection based on threshold versus intensity 基于阈值强度的鲁棒水印方案及篡改检测

Journal of Innovation in Digital Ecosystems Pub Date : 2015-12-01 DOI: 10.1016/j.jides.2015.10.001

Lamri Laouamer , Muath AlShaikh , Laurent Nana , Anca Chrisitine Pascu

{"title":"Robust watermarking scheme and tamper detection based on threshold versus intensity","authors":"Lamri Laouamer , Muath AlShaikh , Laurent Nana , Anca Chrisitine Pascu","doi":"10.1016/j.jides.2015.10.001","DOIUrl":"10.1016/j.jides.2015.10.001","url":null,"abstract":"<div><p>A watermarking field is necessary to prove the copyright, ownership, authenticity and other related security aspects of the electronic data. Semi-Blind watermarking refers to need the watermark image during the extraction process. While, informed watermarking generates the watermark data from the original image itself. Moreover, Tamper detection is useful to discover the tamper zone in the image. In this paper, we propose a semi blind and informed watermarking approach. We build the watermark from the original image using Weber Law. Our approach aims to provide a high robustness and imperceptibility with perfectly tamper detection zone. We divide the original image into blocks and the main pixel is chosen for watermark insertion, where the embedding/extraction operates in the spatial domain. The tamper detection is tested by tampering watermarked image, and then based on the extracted attacked watermark; we can discover the tamper area. Also, the robustness watermarking aspect is proved against different kind of geometric and non-geometric attacks. Based on the experimental results, the imperceptibility and robustness of our watermarking approach are proven and showing perfectly the detection of the tamper zones.</p></div>","PeriodicalId":100792,"journal":{"name":"Journal of Innovation in Digital Ecosystems","volume":"2 1","pages":"Pages 1-12"},"PeriodicalIF":0.0,"publicationDate":"2015-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.jides.2015.10.001","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125238538","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 28

A pattern-based method for refining and formalizing informal specifications in critical control systems 一种基于模式的方法，用于精炼和形式化关键控制系统中的非正式规范

Journal of Innovation in Digital Ecosystems Pub Date : 2015-12-01 DOI: 10.1016/j.jides.2015.11.001

Mohamed Ghazel, Jing Yang, El-Miloudi El-Koursi

引用次数: 5

A method for automatic detection and manual localization of content-based translation errors and shifts 一种基于内容的翻译错误和移位的自动检测和手动定位方法

Journal of Innovation in Digital Ecosystems Pub Date : 2014-12-01 DOI: 10.1016/j.jides.2015.02.004

Éric André Poirier

{"title":"A method for automatic detection and manual localization of content-based translation errors and shifts","authors":"Éric André Poirier","doi":"10.1016/j.jides.2015.02.004","DOIUrl":"https://doi.org/10.1016/j.jides.2015.02.004","url":null,"abstract":"<div><p>In this paper, we describe a method for automatic detection and manual localization of four compositional translation errors and shifts between automatically aligned segments in source and target languages. The automatic detection of errors and shifts is based on a content word precision algorithm which measures the equality of information content between source and target segments. The manual localization of errors and shifts within the segments is based on the compositionality principle. The method allows for the detection and localization of two potential errors; omission and addition, as well as two translation shifts required to avoid a translation error such as over-translation (when a correct translation results in more content words than in the source segment) and under-translation (when a correct translation results in less content words than in the source segment). Because of manual localization within bilingual pairs of segments, the method is not intended for automatic error detection but for human-assisted revision of translations. The analysis, described with the method and the algorithm is applied to real translation examples culled from a state-of-the-art translation corpus sampled for various translation errors. The algorithm and the localization method have implications for the development of more content-oriented natural language processing as well as for the training of professional translators; they can also be useful for formal and systematic description of content-based translation errors.</p></div>","PeriodicalId":100792,"journal":{"name":"Journal of Innovation in Digital Ecosystems","volume":"1 1","pages":"Pages 38-46"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.jides.2015.02.004","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91736333","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5

A bi-objective cost model for optimizing database queries in a multi-cloud environment 用于优化多云环境中数据库查询的双目标成本模型

Journal of Innovation in Digital Ecosystems Pub Date : 2014-12-01 DOI: 10.1016/j.jides.2015.02.002

Anastasios Gounaris, Zisis Karampaglis, Athanasios Naskos, Yannis Manolopoulos

{"title":"A bi-objective cost model for optimizing database queries in a multi-cloud environment","authors":"Anastasios Gounaris, Zisis Karampaglis, Athanasios Naskos, Yannis Manolopoulos","doi":"10.1016/j.jides.2015.02.002","DOIUrl":"https://doi.org/10.1016/j.jides.2015.02.002","url":null,"abstract":"<div><p>Cost models are broadly used in query processing to drive the query optimization process, accurately predict the query execution time, schedule database query tasks, apply admission control and derive resource requirements to name a few applications. The main role of cost models is to estimate the time needed to run the query on a specific machine. In a multi-cloud environment, cost models should be easily calibrated for a wide range of different physical machines, and time estimates need to be complemented with monetary cost information, since both the economic cost and the performance are of primary importance. This work aims to serve as the first proposal for a bi-objective query cost model suitable for queries executed over resources provided by potentially multiple cloud providers. We leverage existing calibrating modeling techniques for time estimates and we couple such estimates with monetary cost information covering the main charging options for using cloud resources. Moreover, we explain how the cost model can become part of an optimizer. Our approach is applicable to more generic data flow graphs, the execution plans of which do not necessarily comprise relational operators. Finally, we give a concrete example about the usage of our proposal and we validate its accuracy through real case studies.</p></div>","PeriodicalId":100792,"journal":{"name":"Journal of Innovation in Digital Ecosystems","volume":"1 1","pages":"Pages 12-25"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.jides.2015.02.002","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91736331","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5

A brief overview and an experimental evaluation of data confidentiality measures on the cloud 对云上数据保密措施的简要概述和实验评估

Journal of Innovation in Digital Ecosystems Pub Date : 2014-12-01 DOI: 10.1016/j.jides.2015.02.001

Hussain Aljafer , Zaki Malik , Mohammed Alodib , Abdelmounaam Rezgui

{"title":"A brief overview and an experimental evaluation of data confidentiality measures on the cloud","authors":"Hussain Aljafer , Zaki Malik , Mohammed Alodib , Abdelmounaam Rezgui","doi":"10.1016/j.jides.2015.02.001","DOIUrl":"https://doi.org/10.1016/j.jides.2015.02.001","url":null,"abstract":"<div><p>Due to the many advantages offered by the cloud computing paradigm, it is fast becoming an enabling technology for many organizations, and even individual users. Flexibility and availability are two of the most important features that promote the wide spread adoption of this technology. In cloud-based data storage scenarios, where the data is controlled by a third party (i.e. the cloud service provider), the data owner usually does not have full control of its data at all stages. Consequently, this poses a prime security threat, and a major challenge is the development of a secure protocol for data storage, sharing, and retrieval. In recent years, a number of research works have targeted this problem. In this paper, we discuss some of the major approaches for secure data sharing in the cloud computing environment. The goal is to provide a concise survey of existing solutions, discuss their benefits, and point out any shortcomings for future research. Specifically, we focus on the use of encryption schemes, and provide a comparative study of the major schemes, through implementation of some representative frameworks.</p></div>","PeriodicalId":100792,"journal":{"name":"Journal of Innovation in Digital Ecosystems","volume":"1 1","pages":"Pages 1-11"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.jides.2015.02.001","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91736332","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 13

A typed applicative system for a language and text processing engineering 一种用于语言和文本处理工程的类型化应用系统

Journal of Innovation in Digital Ecosystems Pub Date : 2014-12-01 DOI: 10.1016/j.jides.2015.02.003

Ismaïl Biskri, Marie Anastacio, Adam Joly, Boucif Amar Bensaber

引用次数: 3

Co-locating services in IoT systems to minimize the communication energy cost 在物联网系统中共同定位服务，以最大限度地降低通信能源成本

Journal of Innovation in Digital Ecosystems Pub Date : 2014-12-01 DOI: 10.1016/j.jides.2015.02.005

Zhenqiu Huang , Kwei-Jay Lin , Shih-Yuan Yu , Jane Yung-jen Hsu

{"title":"Co-locating services in IoT systems to minimize the communication energy cost","authors":"Zhenqiu Huang , Kwei-Jay Lin , Shih-Yuan Yu , Jane Yung-jen Hsu","doi":"10.1016/j.jides.2015.02.005","DOIUrl":"10.1016/j.jides.2015.02.005","url":null,"abstract":"<div><p>Ubiquitous sensing and actuating devices are now everywhere in our living environment as part of the global cyber–physical ecosystem. Sensing and actuating capabilities can be modeled as services to compose intelligent Internet of Things (IoT) applications. An issue for perpetually running and managing these IoT devices is the energy cost. One energy saving strategy is to co-locate several services on one device in order to reduce the computing and communication energy. In this paper, we propose a service merging strategy for mapping and co-locating multiple services on devices. In a multi-hop network, the service co-location problem is formulated as a quadratic programming problem. We show a reduction method that reduces it to the integer programming problem. In a single hop network, the service co-location problem can be modeled as the Maximum Weighted Independent Set (MWIS) problem. We show the algorithm to transform a service flow to a co-location graph, then use known heuristic algorithms to find the maximum independent set which is the basis for making service co-location decisions. The performance of different co-location algorithms are evaluated by simulation in this paper.</p></div>","PeriodicalId":100792,"journal":{"name":"Journal of Innovation in Digital Ecosystems","volume":"1 1","pages":"Pages 47-57"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.jides.2015.02.005","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113966355","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 53