2013 Seventh International Conference on Next Generation Mobile Apps, Services and Technologies最新文献_第4页

Performance Analysis for Channel Estimation Based on Common Pilot and User-Specific Pilot Schemes 基于通用导频和用户专用导频方案的信道估计性能分析

2013 Seventh International Conference on Next Generation Mobile Apps, Services and Technologies Pub Date : 2013-09-25 DOI: 10.1109/NGMAST.2013.43

Jihyung Kim, Joonwhoan Lee

引用次数: 0

Sensor Placement Optimization Method for People Tracking 人员跟踪的传感器布局优化方法

2013 Seventh International Conference on Next Generation Mobile Apps, Services and Technologies Pub Date : 2013-09-25 DOI: 10.1109/NGMAST.2013.20

Akihito Hiromori, H. Yamaguchi, T. Higashino

{"title":"Sensor Placement Optimization Method for People Tracking","authors":"Akihito Hiromori, H. Yamaguchi, T. Higashino","doi":"10.1109/NGMAST.2013.20","DOIUrl":"https://doi.org/10.1109/NGMAST.2013.20","url":null,"abstract":"In this paper, we deal with a sensor placement optimization problem for multi-point pedestrian flow monitoring systems, and provide an efficient algorithm. Our goal is to build a realistic and accurate model of the monitoring systems' pedestrian flow estimation performance in terms of their estimation errors. Also our model can represent sensor placement considering the number, types, locations and capabilities of sensors in urban scenarios. To this goal, we formulate the sub-problem of estimating accuracy achieved by a given monitoring system under a given placement of sensors. Using a solver for this sub-problem as a sub-module, we also design an algorithm to determine the optimal sensor placement. This algorithm employs a simulated annealing (SA) based approach and iteratively improve solutions to converge to near optimal solutions. Through performance evaluation using our HumanS simulator [1], which simulates human detection sensors, pedestrian behavior and floor structures altogether, we have verified that a derived sensor placement by our proposed method could detect pedestrian flows with high accuracy for an underground city and its estimation error was about 1 percent.","PeriodicalId":369374,"journal":{"name":"2013 Seventh International Conference on Next Generation Mobile Apps, Services and Technologies","volume":"146 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127302120","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: 4

Generic Self-Management Model for Wireless Network Management 无线网络管理通用自管理模型

2013 Seventh International Conference on Next Generation Mobile Apps, Services and Technologies Pub Date : 2013-09-25 DOI: 10.1109/NGMAST.2013.52

H. Tkalčić

引用次数: 2

How Can We Acquire the Most Common Query Types in Two-Tiered Wireless Sensor Networks? 如何获取两层无线传感器网络中最常见的查询类型?

2013 Seventh International Conference on Next Generation Mobile Apps, Services and Technologies Pub Date : 2013-09-25 DOI: 10.1109/NGMAST.2013.28

T. V. Bui, Van H. Dang, I. Echizen, T. Nguyen

引用次数: 1

An Analysis Tool to Evaluate Effect of Retransmissions on SIP Server Overloading 一个评估重传对SIP服务器过载影响的分析工具

2013 Seventh International Conference on Next Generation Mobile Apps, Services and Technologies Pub Date : 2013-09-25 DOI: 10.1109/NGMAST.2013.26

Demir Y. Yavas, Ibrahim Hökelek, Bilge Günsel

引用次数: 7

Road Hazard Detection and Sharing with Multimodal Sensor Analysis on Smartphones 基于智能手机多模态传感器的道路危险检测与共享

2013 Seventh International Conference on Next Generation Mobile Apps, Services and Technologies Pub Date : 2013-09-25 DOI: 10.1109/NGMAST.2013.19

F. Orhan, P. Eren

{"title":"Road Hazard Detection and Sharing with Multimodal Sensor Analysis on Smartphones","authors":"F. Orhan, P. Eren","doi":"10.1109/NGMAST.2013.19","DOIUrl":"https://doi.org/10.1109/NGMAST.2013.19","url":null,"abstract":"The sensing, computing and communicating capabilities of smart phones bring new possibilities for creating smart applications, including in-car mobile applications for smart cities. However, due to the dynamic nature of vehicles, many requirements such as sensor management, signal and image processing or information sharing needs exist when developing a smart sensor-based in-car mobile application. On the other hand, most in-car applications generally employ single-modal sensor analysis, which also yields limited results. Using the advanced capabilities of smart phones, this study proposes a framework with built-in multimodal sensor analysis capability, and enables easy and rapid development of signal and image processing-based smart mobile applications. Within this framework, an abstraction for fast access to synchronized sensor readings, a plug in based multimodal analysis interface for signal and image processing applications, and a toolset to connect to other users or servers for sharing the results are provided built-in. As part of this study, a sample mobile application is also developed to demonstrate the applicability of the framework. This application is used for detecting defects on the road, such as potholes and speed bumps, and it automatically extracts the video section and the image of the corresponding road segment containing the defect. Upon such critical hazard detection, the application instantly informs nearby users about the incident. A good detection rate of speed bumps is obtained in the performed tests, while the advantage of automatic image extraction based on the multimodal approach is also demonstrated.","PeriodicalId":369374,"journal":{"name":"2013 Seventh International Conference on Next Generation Mobile Apps, Services and Technologies","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123333384","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: 32

Gradual Time Synchronization for Wireless Mesh Networks Based on OFDMA 基于OFDMA的无线网状网络渐进时间同步

2013 Seventh International Conference on Next Generation Mobile Apps, Services and Technologies Pub Date : 2013-09-25 DOI: 10.1109/NGMAST.2013.41

Jihyung Kim, K. Lim, Moonsik Lee

引用次数: 3

A Virtual World Web Client Utilizing an Entity-Component Model 利用实体-组件模型的虚拟世界Web客户端

2013 Seventh International Conference on Next Generation Mobile Apps, Services and Technologies Pub Date : 2013-09-25 DOI: 10.1109/NGMAST.2013.11

T. Dahl, T. Koskela, Seamus Hickey, Jarkko M. Vatjus-Anttila

引用次数: 13

Towards Highly Available Complex Event Processing Deployments in the Cloud 迈向云端高可用复杂事件处理部署

2013 Seventh International Conference on Next Generation Mobile Apps, Services and Technologies Pub Date : 2013-09-25 DOI: 10.1109/NGMAST.2013.35

Paris Carbone, K. Vandikas, Farjola Zaloshnja

{"title":"Towards Highly Available Complex Event Processing Deployments in the Cloud","authors":"Paris Carbone, K. Vandikas, Farjola Zaloshnja","doi":"10.1109/NGMAST.2013.35","DOIUrl":"https://doi.org/10.1109/NGMAST.2013.35","url":null,"abstract":"Recent advances in distributed computing have made it possible to achieve high availability on traditional systems and thus serve them as reliable services. For several offline computational applications, such as fine grained batch processing, their parallel nature in addition to weak consistency requirements allowed a more trivial transition. On the other hand, on-line processing systems such as Complex Event Processing (CEP) still maintain a monolithic architecture, being able to offer high expressiveness and vertical scalability at the expense of low distribution. Despite attempts to design dedicated distributed CEP systems there is potential for existing systems to benefit from a sustainable cloud deployment. In this work we address the main challenges of providing such a CEP service with a focus on reliability, since it is the most crucial aspect of that transition. Our approach targets low average detection latency and sustain-ability by leveraging event delegation mechanisms present on existing stream execution platforms. It also introduces redundancy and transactional logging to provide improved fault tolerance and partial recovery. Our performance analysis illustrates the benefits of our approach and shows acceptable performance costs for on-line CEP exhibited by the fault tolerance mechanisms we introduced.","PeriodicalId":369374,"journal":{"name":"2013 Seventh International Conference on Next Generation Mobile Apps, Services and Technologies","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125236793","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: 4

Learning Analytics and Formative Assessment to Provide Immediate Detailed Feedback Using a Student Centered Mobile Dashboard 使用以学生为中心的移动仪表板提供即时详细反馈的学习分析和形成性评估

2013 Seventh International Conference on Next Generation Mobile Apps, Services and Technologies Pub Date : 2013-09-25 DOI: 10.1109/NGMAST.2013.54

Naif R. Aljohani, H. Davis

引用次数: 36