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You Are Your Check-In: Understanding the Behavior of Tourists and Residents Using Data from Foursquare 你就是你的签到:利用Foursquare的数据了解游客和居民的行为
Brazilian Symposium on Multimedia and the Web Pub Date : 2014-11-18 DOI: 10.1145/2664551.2664562
A. Ferreira, Thiago H. Silva, A. Loureiro
{"title":"You Are Your Check-In: Understanding the Behavior of Tourists and Residents Using Data from Foursquare","authors":"A. Ferreira, Thiago H. Silva, A. Loureiro","doi":"10.1145/2664551.2664562","DOIUrl":"https://doi.org/10.1145/2664551.2664562","url":null,"abstract":"Currently the use of location-based social networks are becoming quite popular. For example, Foursquare reported 50 million users in 2014. Data from this type of system can be viewed as a source of sensing, in which the sensors are users with their mobile devices sharing data on various aspects of the city. This source of data enables large-scale study of urban social behavior and city dynamics. In this paper we show how we can use the signals emitted by Foursquare users to better understand the differences between the behavior of tourists and residents. We analyze tourists and residents in four popular cities around the world: London, New York, Rio de Janeiro and Tokyo. One of the contributions of this work is the spatio-temporal study of properties of the behavior of these two classes of users (tourists and residents). We have identified, for example, that some locations have features that are more correlated with the tourists' behavior, and also that even in places frequented by tourists as well as residents there are clear differences in the patterns of behavior of these classes. Our results could be useful in several cases, for example, to help in the development of new recommendation systems specific for tourists.","PeriodicalId":114454,"journal":{"name":"Brazilian Symposium on Multimedia and the Web","volume":"144 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116346505","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: 3
CineLibras: A Proposal for Automatic Generation and Distribution of Windows of Libras on the Cinema Rooms 电影院天秤座:电影院天秤座窗自动生成与分配的方案
Brazilian Symposium on Multimedia and the Web Pub Date : 2014-11-18 DOI: 10.1145/2664551.2664557
L. Domingues, F. S. Ferreira, T. Araújo, Manoel Gomes da Silva Neto, Lucenildo Lins Aquino Júnior, Guido Lemos de Souza Filho, Felipe Hermínio Lemos
{"title":"CineLibras: A Proposal for Automatic Generation and Distribution of Windows of Libras on the Cinema Rooms","authors":"L. Domingues, F. S. Ferreira, T. Araújo, Manoel Gomes da Silva Neto, Lucenildo Lins Aquino Júnior, Guido Lemos de Souza Filho, Felipe Hermínio Lemos","doi":"10.1145/2664551.2664557","DOIUrl":"https://doi.org/10.1145/2664551.2664557","url":null,"abstract":"Deaf people face many problems to execute their daily activities. The main reasons to explain this include barriers for both access information as well as communicating with people without disabilities. In this context, the main goal of this paper is to identify the main problems faced by deaf people to access information in movie theaters and to propose a solution to better address their requirements. In this context, it was developed a computational system that is able to automatically generate and distribute accessible video tracks in Brazilian Sign Language (Língua Brasileira de Sinais - LIBRAS) in cinema rooms. This solution uses mobile devices as secondary screens, in a way that deaf people can have access to the content presented in their natural way of communication. Finally, experiments were performed with groups of Brazilian deaf in order to ensure the viability of the proposed solution and the data collected are analyzed and discussed.","PeriodicalId":114454,"journal":{"name":"Brazilian Symposium on Multimedia and the Web","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127617323","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
Enhancing Redundancy in Wireless Visual Sensor Networks for Target Coverage 增强无线视觉传感器网络的目标覆盖冗余
Brazilian Symposium on Multimedia and the Web Pub Date : 2014-11-18 DOI: 10.1145/2664551.2664558
D. G. Costa, I. Silva, L. A. Guedes, P. Portugal, F. Vasques
{"title":"Enhancing Redundancy in Wireless Visual Sensor Networks for Target Coverage","authors":"D. G. Costa, I. Silva, L. A. Guedes, P. Portugal, F. Vasques","doi":"10.1145/2664551.2664558","DOIUrl":"https://doi.org/10.1145/2664551.2664558","url":null,"abstract":"Wireless visual sensor networks provide valuable information for many monitoring and control applications. Sometimes, a set of targets needs to be monitored by deployed visual sensors. For those networks, however, some active visual sources may fail, potentially degrading the application monitoring quality when targets become uncovered. Moreover, some applications may need different perspectives of the same target. As visual sensors will be used to monitor a set of targets, a high level of monitoring redundancy may be required and an effective way to achieve it is assuring that targets are being concurrently viewed by more than one visual sensor. We propose a centralized greedy algorithm to enhance redundancy in wireless visual sensor networks when visual sensors with adjustable orientations are deployed. Additionally, as some targets may be more critical for the application, we propose a priority-based configuration of the sensors' poses in order to achieve an optimized configuration for the visual sensors.","PeriodicalId":114454,"journal":{"name":"Brazilian Symposium on Multimedia and the Web","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117322302","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: 14
Framework for Automatic Generation of Hypermedia Applications in Runtime 运行时自动生成超媒体应用程序的框架
Brazilian Symposium on Multimedia and the Web Pub Date : 2014-11-18 DOI: 10.1145/2664551.2664559
L. Soares, Carlos de Salles Soares Neto, José Geraldo de Sousa Junior
{"title":"Framework for Automatic Generation of Hypermedia Applications in Runtime","authors":"L. Soares, Carlos de Salles Soares Neto, José Geraldo de Sousa Junior","doi":"10.1145/2664551.2664559","DOIUrl":"https://doi.org/10.1145/2664551.2664559","url":null,"abstract":"The automatic generation of hypermedia documents is a subject that still little explored. This paper deals with authoring of dynamic hypermedia documents based on templates. A framework to support the automatic generation of these documents at runtime is proposed and detailed. As an example of use, the framework is instantiated for the automatic development of NCL dynamic applications, also bringing a discussion of the available resources and the native support provided by the Ginga middleware for managing such application types.","PeriodicalId":114454,"journal":{"name":"Brazilian Symposium on Multimedia and the Web","volume":"29 4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121119033","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: 3
Cacuriá: Authoring Tool for Multimedia Learning Objects 多媒体学习对象的创作工具
Brazilian Symposium on Multimedia and the Web Pub Date : 2014-11-18 DOI: 10.1145/2664551.2664567
A. L. B. Damasceno, R. Galabo, Carlos de Salles Soares Neto
{"title":"Cacuriá: Authoring Tool for Multimedia Learning Objects","authors":"A. L. B. Damasceno, R. Galabo, Carlos de Salles Soares Neto","doi":"10.1145/2664551.2664567","DOIUrl":"https://doi.org/10.1145/2664551.2664567","url":null,"abstract":"The application of multimedia resources during classes is becoming increasingly usual, making the learning process more participatory and interactive. Learning Objects (LOs) are entities, digital or not, that can be used, reused or referenced during teaching process. The multimedia authoring of LOs is still a complex and time-consuming process. The purpose of this paper is to present the process of participatory design used in the development of Cacuriá, a tool that allows teachers and tutors to create and share videos enriched with interactive multimedia contents. Cacuriá interface was developed using Participatory Design techniques, including focus group, Card Sorting and Paper Prototyping followed by an enhancement of the interface design. This paper also describes implementation architecture of Cacuriá. Finally, a case study was conducted to present a possibility of OAs creation using the Cacuriá Tool without requiring the user to previously knowing programming concepts.","PeriodicalId":114454,"journal":{"name":"Brazilian Symposium on Multimedia and the Web","volume":"368 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115982531","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: 8
ImQET: Objective Stereoscopic Image Quality Evaluation Tool 客观立体图像质量评价工具
Brazilian Symposium on Multimedia and the Web Pub Date : 2014-11-18 DOI: 10.1145/2664551.2664552
J. V. M. Cardoso, C. D. M. Regis, M. Alencar
{"title":"ImQET: Objective Stereoscopic Image Quality Evaluation Tool","authors":"J. V. M. Cardoso, C. D. M. Regis, M. Alencar","doi":"10.1145/2664551.2664552","DOIUrl":"https://doi.org/10.1145/2664551.2664552","url":null,"abstract":"This paper describes an application for full-reference stereoscopic image quality assessment called ImQET. The application was developed using Mono framework and C# programming language. ImQET is independent of platform and provides a friendly Graphical User Interface (GUI). The stereoscopic image signals used in the application are based in a two-view model. ImQET has objective image quality algorithms such as PSNR, SSIM, and PW-SSIM and also incorporates a recently published technique for stereoscopic image quality assessment called Disparity Weighting (DW). Numerical results corresponding to the performance of the objective measurements, which were obtained using the proposed application, are presented. ImQET can be used by academia and industry for standardization and development of objective algorithms and evaluation of impairments in stereoscopic image signals caused by processing techniques.","PeriodicalId":114454,"journal":{"name":"Brazilian Symposium on Multimedia and the Web","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121367535","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
A Model-Driven Approach to Generate Context-Aware Applications 生成上下文感知应用程序的模型驱动方法
Brazilian Symposium on Multimedia and the Web Pub Date : 2014-11-18 DOI: 10.1145/2664551.2664586
P. A. S. Duarte, F. M. Barreto, Francisco A. A. Gomes, Windson Viana, Fernando A. M. Trinta
{"title":"A Model-Driven Approach to Generate Context-Aware Applications","authors":"P. A. S. Duarte, F. M. Barreto, Francisco A. A. Gomes, Windson Viana, Fernando A. M. Trinta","doi":"10.1145/2664551.2664586","DOIUrl":"https://doi.org/10.1145/2664551.2664586","url":null,"abstract":"With the advances in mobile devices and ubiquitous computing, mobile and context-aware applications is becoming increasingly emerging. However, the development process of these applications still faces some challenges (e.g, heterogeneity of devices, complexity of the sensors access code, etc). The adoption of middleware platforms for context-aware systems is a well-known solution used to overcome such problems. An example of middleware developed for this purpose is LoCCAM, which allows adaptive acquisition of contextual information on Android based devices. But LoCCAM still presents issues concerning middleware configuration of contextual information. One approach to mitigate these existing problems is the usage of MDE (Model-Driven Engineering) paradigm. This paper shows a Visual Domain-Specific Language for modeling contextual information that is used in the development of applications using the LoCCAM. This language aims at generating skeletons of Android projects. These projects are properly configured for the use of middleware, including a transparent access to the contextual information. The main benefit of our solution it to provide a better abstraction to software developers concerning the configuration of LoCCAM middleware.","PeriodicalId":114454,"journal":{"name":"Brazilian Symposium on Multimedia and the Web","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126183593","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: 3
Synchronizing Web Documents with Style 与样式同步Web文档
Brazilian Symposium on Multimedia and the Web Pub Date : 2014-11-18 DOI: 10.1145/2664551.2664555
R. Guimarães, D. Bulterman, Pablo César, Jack Jansen
{"title":"Synchronizing Web Documents with Style","authors":"R. Guimarães, D. Bulterman, Pablo César, Jack Jansen","doi":"10.1145/2664551.2664555","DOIUrl":"https://doi.org/10.1145/2664551.2664555","url":null,"abstract":"In this paper we report on our efforts to define a set of document extensions to Cascading Style Sheets (CSS) that allow for structured timing and synchronization of elements within a Web page. Our work considers the scenario in which the temporal structure can be decoupled from the content of the Web page in a similar way that CSS does with the layout, colors and fonts. Based on the SMIL (Synchronized Multimedia Integration Language) temporal model we propose CSS document extensions and discuss the design and implementation of a proof of concept that realizes our contributions. As HTML5 seems to move away from technologies like Flash and XML (eXtensible Markup Language), we believe our approach provides a flexible declarative solution to specify rich media experiences that is more aligned with current Web practices.","PeriodicalId":114454,"journal":{"name":"Brazilian Symposium on Multimedia and the Web","volume":"308 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128327015","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
Designing iDTV Applications through Interactive Storyboards 通过交互式故事板设计iDTV应用程序
Brazilian Symposium on Multimedia and the Web Pub Date : 2014-11-18 DOI: 10.1145/2664551.2664572
Eduardo Cruz Araújo, L. Soares
{"title":"Designing iDTV Applications through Interactive Storyboards","authors":"Eduardo Cruz Araújo, L. Soares","doi":"10.1145/2664551.2664572","DOIUrl":"https://doi.org/10.1145/2664551.2664572","url":null,"abstract":"This paper presents an authoring tool focused on the design of interactive narratives, named ISB Designer. Based on techniques used by film and animation producers, the tool does not rule out paradigms they are used to. One of its main advantages is to allow the design of audiovisual content together with its points of adaptation and intervention, thus helping in the detection and correction of narrative inconsistencies. Another ISB Designer differential is the possibility of designing applications for presentations on multiple screens. Unlike other tools, the ISB Designer focuses on the design and prototyping phase of applications, as a means of producing higher quality interactive narratives, for then automatically generate the final application, in a post-project stage.","PeriodicalId":114454,"journal":{"name":"Brazilian Symposium on Multimedia and the Web","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128400832","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: 3
System of Quality monitoring for IP Telephony Services IP电话服务质量监控系统
Brazilian Symposium on Multimedia and the Web Pub Date : 2014-11-18 DOI: 10.1145/2664551.2664554
M. Vetter, Roberto Willrich
{"title":"System of Quality monitoring for IP Telephony Services","authors":"M. Vetter, Roberto Willrich","doi":"10.1145/2664551.2664554","DOIUrl":"https://doi.org/10.1145/2664551.2664554","url":null,"abstract":"IP telephony is a consolidated service that has been growing steadily, driven by its various advantages. However, maintaining the quality of this service is still a challenge. As the telephony is an essential service for various organizations, the IP telephony must maintain reasonable call qualities. Therefore, the quality offered by the IP telephony service must be constantly monitored to guide maintenance actions. This paper proposes an end-to-end quality monitoring system for IP telephony services based on the reporting package RTCP-XR and using the SIP signaling protocol. A use case of the proposed system on an IP telephony production service of a university shows its effectiveness and versatility.","PeriodicalId":114454,"journal":{"name":"Brazilian Symposium on Multimedia and the Web","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130515766","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
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