J. Chem. Inf. Comput. Sci.最新文献_第4页

Performability of Retransmission of Loss Packets in Wireless Sensor Networks 无线传感器网络中丢包重传的性能研究

J. Chem. Inf. Comput. Sci. Pub Date : 2019-03-28 DOI: 10.5539/CIS.V12N2P71

Imeh J. Umoren, D. Asuquo, Onukwugha Gilean, Mfon Esang

{"title":"Performability of Retransmission of Loss Packets in Wireless Sensor Networks","authors":"Imeh J. Umoren, D. Asuquo, Onukwugha Gilean, Mfon Esang","doi":"10.5539/CIS.V12N2P71","DOIUrl":"https://doi.org/10.5539/CIS.V12N2P71","url":null,"abstract":"Latest progress in wireless communication technology has enabled the development of low-cost sensor networks with major concern on quality of service (QoS) provisioning. Wireless sensor networks (WSNs) can be adopted in various application domains but each use is likely to pose peculiar technical issues. Basically, we demonstrate that congestion, packet loss and delay have strong influence on the performance of WSNs. In order to implement a realistic sensor network policy to resolve the problem of data delay and avoidance of collisions that lead to packet losses, we develop a system that guarantees QoS in WSNs using Fuzzy Logic Controller (FLC) for sensitivity analysis of the effect of adaptive forward error correction (AFEC). The AFEC approach improves the throughput by dynamically tuning FEC subject to the nature of wireless channel loss thereby optimizing throughput, sensor power utilization, while minimizing traffic retransmission, bit error rate (BER), and energy consumption. Basically, parameters such as packet delivery ratio, packet loss, delay, error rate, and throughput are appraised. The system has a spread procedure which is able to schedule the transmission of the nodes in order to have a data flow that converges from the furthest nodes toward the fusion centre. The key benefit of the scenario showed that, after extensive simulation using realistic field data, the procedure permits a practical approach to obtaining optimal solution to loss packets retransmission problem in WSNs giving a strong improvement on QoS provisioning.","PeriodicalId":14676,"journal":{"name":"J. Chem. Inf. Comput. Sci.","volume":"7 1","pages":"71-86"},"PeriodicalIF":0.0,"publicationDate":"2019-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91349232","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 6

Service Packaging: A Pattern Based Approach Towards Service Delivery 服务打包:面向服务交付的基于模式的方法

J. Chem. Inf. Comput. Sci. Pub Date : 2019-03-25 DOI: 10.5539/cis.v12n2p14

M. A. Talib, M. N. Talib, Madiha Akhtar

{"title":"Service Packaging: A Pattern Based Approach Towards Service Delivery","authors":"M. A. Talib, M. N. Talib, Madiha Akhtar","doi":"10.5539/cis.v12n2p14","DOIUrl":"https://doi.org/10.5539/cis.v12n2p14","url":null,"abstract":"Authentication, authorization, billing and monitoring are all common service delivery functions that are generally required to be added on to core business services in order for them to be delivered online commercially. Extending core services with these service delivery functions requires considerable effort if implemented ground-up and can be subject to limitations if outsourced to a service broker or a conventional middleware platform. Because of the ubiquitous nature of these service delivery functions, we see them as reusable patterns for service delivery. In this paper we have introduce an approach to implementing and applying these patterns in business to consumer e-commerce. We name the approach Service Packaging. Through the approach, generic implementations (or service packages) of the various service delivery patterns can be incrementally applied to core services, thus enabling flexible and systematic service delivery. A core service, regardless of its business domain does not require any structural or behavioral modifications in order to conform to a specific service delivery requirement and hence can be used out of the box. We also present a prototype middleware platform for the design-time modeling and implementation of service packages as well as their runtime execution.","PeriodicalId":14676,"journal":{"name":"J. Chem. Inf. Comput. Sci.","volume":"1 1","pages":"14-34"},"PeriodicalIF":0.0,"publicationDate":"2019-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90250371","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Developing a Web Credibility Evaluation Tool Using PROMETHEE Method 利用PROMETHEE方法开发网络可信度评估工具

J. Chem. Inf. Comput. Sci. Pub Date : 2019-03-25 DOI: 10.5539/cis.v12n2p46

Mona Alghamdi, Khalid Alomar

{"title":"Developing a Web Credibility Evaluation Tool Using PROMETHEE Method","authors":"Mona Alghamdi, Khalid Alomar","doi":"10.5539/cis.v12n2p46","DOIUrl":"https://doi.org/10.5539/cis.v12n2p46","url":null,"abstract":"In recent years, the Internet has become an indispensable way for users to find information which is almost instantaneously available. However, the presence of information on different websites makes the user needs to pre-check the credibility of the selected websites. Most users find it difficult to assess website credibility in terms of its particular characteristics or factors. Accordingly, we proposed an automated evaluation tool which considers various factors to assess the credibility of different websites and rank them from the highest credibility score to the lowest in order to allow the user to select the most credible website. We used the Preference Ranking Organization Method for Enrichment Evaluations (PROMOTHEE). The latter is one of the Multi-Criteria Decision Making methods (MCDM). It combines pairwise comparison and outranking methods in order to give more accurate and superior credibility scores due to its enrichment evaluations. For the proposed tool to be acceptable, we carried out a correlation analysis to determine the coefficient of correlation between human judges and the proposed tool. We found the coefficient of correlation rho is 0.943 which indicates that there is a strong correlation between the human judges’ ranking and the ranking given by the proposed website evaluation tool.","PeriodicalId":14676,"journal":{"name":"J. Chem. Inf. Comput. Sci.","volume":"61 8","pages":"46-57"},"PeriodicalIF":0.0,"publicationDate":"2019-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91473335","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Secure Multi-User k-Means Clustering Based on Encrypted IoT Data 基于加密物联网数据的安全多用户k-均值聚类

J. Chem. Inf. Comput. Sci. Pub Date : 2019-03-25 DOI: 10.5539/cis.v12n2p35

Yanling Li, Chuansheng Wang, Qi Wang, Jieling Dai, Yushan Zhao

{"title":"Secure Multi-User k-Means Clustering Based on Encrypted IoT Data","authors":"Yanling Li, Chuansheng Wang, Qi Wang, Jieling Dai, Yushan Zhao","doi":"10.5539/cis.v12n2p35","DOIUrl":"https://doi.org/10.5539/cis.v12n2p35","url":null,"abstract":"IoT technology collects information from a lot of clients, which may relate to personal privacy. To protect the privacy, the clients would like to encrypt the raw data with their own keys before uploading. However, to make use of the information, the data mining technology with cloud computing is used for the knowledge discovery. Hence, it is an emergent issue of how to effectively performing data mining algorithm on the encrypted data. In this paper, we present a k-means clustering scheme with multi-user based on the IoT data. Although, there are many privacy-preserving k-means clustering protocols, they rarely focus on the situation of encrypting with different public keys. Besides, the existing works are inefficient and impractical. The scheme we propose in this paper not only solves the problem of evaluation on the encrypted data under different public keys but also improves the efficiency of the algorithm. It is semantic security under the semi-honest model according to our theoretical analysis. At last, we evaluate the experiment based on a real dataset, and comparing with previous works, the result shows that our scheme is more efficient and practical.","PeriodicalId":14676,"journal":{"name":"J. Chem. Inf. Comput. Sci.","volume":"19 1","pages":"35-45"},"PeriodicalIF":0.0,"publicationDate":"2019-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75591323","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Portrait Extraction Algorithm Based on Face Detection and Image Segmentation 基于人脸检测和图像分割的人像提取算法

J. Chem. Inf. Comput. Sci. Pub Date : 2019-03-25 DOI: 10.5539/cis.v12n2p1

Chongyi Yang, Wanyu Huang, Ruoqi Zhang, Rui Kong

引用次数: 2

Multi-Channel Digital Oscilloscope Implementation over Android Device 基于Android设备的多通道数字示波器实现

J. Chem. Inf. Comput. Sci. Pub Date : 2019-03-25 DOI: 10.5539/cis.v12n2p58

Chongyi Yang, Chanpin Chen, Zhenhao Wu, Jiashun Jiang, Sicheng Su, Xue Kang, Qingping Dou

引用次数: 1

A Maturity Model for Assessing IS Risk Management Activity Considering the Dependencies Between Its Elements 考虑要素间依赖关系的信息系统风险管理活动成熟度评估模型

J. Chem. Inf. Comput. Sci. Pub Date : 2019-01-27 DOI: 10.5539/cis.v12n1p98

Mina Elmaallam, Hicham Bensaid, A. Kriouile