{"title":"Adaptive Layouts and Nesting Templates for Hypermedia Composite Templates","authors":"G. Amorim, J. Santos, D. Muchaluat-Saade","doi":"10.1145/2820426.2820442","DOIUrl":"https://doi.org/10.1145/2820426.2820442","url":null,"abstract":"Arranging interface components in a layout model, like a grid, is frequently supported in programming languages. However, in multimedia authoring declarative languages, those facilities are not provided and authors should declare presentation characteristics for each media item separately. Moreover, in hypermedia document template authoring languages, where generic media components can be defined, layout models would be very helpful for specifying presentation characteristics of media items. This paper proposes the use of Adaptive Layouts for hypermedia document templates. Adaptive Layouts allow the definition of generic layout models, such as grid or flow, to automatically place media items on the presentation device screen. This work presents the XTemplate 4.0 authoring language for specifying hypermedia composite templates including the adaptive layout facility. Another contribution of this work is related to template nesting. When defining new document templates, reusing previously-defined ones can be very helpful. As a hypermedia composite template specifies semantics for a document composite node, when nested compositions are supported in the document authoring model, nested templates can facilitate template definition and reuse. This work also includes the facility of nesting templates in XTemplate 4.0, specifying a well-defined interface for nesting templates, which satisfies the compositionality property.","PeriodicalId":224319,"journal":{"name":"Proceedings of the 21st Brazilian Symposium on Multimedia and the Web","volume":"117 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124146225","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}
Pedro Rego Ballona, Patrick Prado, J. Almeida, H. T. Marques-Neto
{"title":"Analyzing The Influence Of Pope's Tweets On His Followers' Mood","authors":"Pedro Rego Ballona, Patrick Prado, J. Almeida, H. T. Marques-Neto","doi":"10.1145/2820426.2820441","DOIUrl":"https://doi.org/10.1145/2820426.2820441","url":null,"abstract":"The ever-increasing usage of Social Medias, like Twitter, have enabled companies and public personalities to communicate and to influence their public. However, how to analyze and measure something as subjective as interpersonal influences? This paper presents a methodology for measuring and to analyze how Twitter's posts (tweets) can influence their readers. In our work, the interpersonal influence of user is given by the capacity of tweets on influencing or affecting positively or negatively his/her mood or state of mind. Hence, the influence of one user A on another user B is the fluctuation of B's mood when he/she reads and retweets a message posted by A. We measured the user's mood using the Subjective Well-Being (SWB) that evaluates the mood of a person based on the positive and negative sentiment pointed on their collection of authored documents, e.g. on his/her thread of tweets. We applied the proposed methodology to analyze the influence of an important Twitter account, Your Holiness the Pope Francis, on the mood of his followers. The results show the existence of the Pope's influence on his followers' mood in a short-term period: from 1 to 2 hours after he/she retweets a Pope's message.","PeriodicalId":224319,"journal":{"name":"Proceedings of the 21st Brazilian Symposium on Multimedia and the Web","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125783988","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}
{"title":"Implementing a Special Media Transmissions Using UltraGrid and CoUniverse","authors":"M. Liska","doi":"10.1145/2820426.2822357","DOIUrl":"https://doi.org/10.1145/2820426.2822357","url":null,"abstract":"The workshop will provide an insight in solving real-world problems using the high-quality, low-latency media transmissions over (high-speed) networks and implemented by the UltraGrid and CoUniverse software developed by CESNET. During the workshop we'll go step-by-step through a deployment of UltraGrid and CoUniverse for a multi-point media transmissions with quality maximized with respect to the state and performance of dynamic network environments. Applications for media broadcasting and medical transmissions already implemented by CESNET and its partners will be used to show the real-world deployment, its most common pitfalls and how to resolve them. The workshop will also cover various non technical aspects such as organization and planning which often tend to be more problematic then the technology and its deployment itself.","PeriodicalId":224319,"journal":{"name":"Proceedings of the 21st Brazilian Symposium on Multimedia and the Web","volume":"71 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134036252","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}
E. A. Nogueira, Ernani Viriato de Melo, E. Faria, D. Guliato
{"title":"IKB-MS: A Collaborative Filtering Approach Associated with Human Visual Attention for Clothing Recommendation","authors":"E. A. Nogueira, Ernani Viriato de Melo, E. Faria, D. Guliato","doi":"10.1145/2820426.2820430","DOIUrl":"https://doi.org/10.1145/2820426.2820430","url":null,"abstract":"Nowadays, the amount of customers using clothing sites for shopping is greatly increasing, mainly due to the easiness and rapidity of this way of consumption. In this context, Recommender Systems (RS) have become indispensable to help consumers to find products that may possibly pleasant or be useful to them. These systems often use techniques of Collaborating Filtering (CF). When there are items that do not have ratings or that possess quite few ratings available, the recommender system performs poorly. This problem is known as new item cold-start. In this paper, we propose to investigate in what extent information on visual attention can help to produce more accurate clothing recommendation models. We present a new collaborative filtering strategy that uses visual attention to characterize images and alleviate the new item cold-start problem. In order to validate this strategy, we created a clothing database and we use three algorithms well known for the extraction of visual attention these clothes. An extensive set of experiments shows that our approach is efficient and outperforms state-of-the-art CF RS.","PeriodicalId":224319,"journal":{"name":"Proceedings of the 21st Brazilian Symposium on Multimedia and the Web","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132371498","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}
{"title":"Efficient Resource Allocation for Web Applications Hosted in the Cloud by means of Weighted Multi-objective Linear Programming","authors":"Valter Rogério Messias, J. C. Estrella, R. Ehlers","doi":"10.1145/2820426.2820435","DOIUrl":"https://doi.org/10.1145/2820426.2820435","url":null,"abstract":"In a cloud computing environment, companies can allocate and de-allocate computing resources according to demand. However, this task does not happen instantaneously. There is a delay, which may take minutes, between the request for a new resource and it be ready for use. To resolve this problem we need forecast the future demand for then allocate the required amount of resources. As there is no forecasting model which is appropriate in all cases, we propose in this paper, the combination of different forecasting models by means of weighted multi-objective linear programming. In this way, we intend to create a generic method, able to optimize the resource allocation for different web applications, with different demand types. The results obtained by means of simulation show that our proposal achieves this goal.","PeriodicalId":224319,"journal":{"name":"Proceedings of the 21st Brazilian Symposium on Multimedia and the Web","volume":"121 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124790090","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}
Kattiuscia Bitencourt, F. Durão, Manoel G. Mendonça
{"title":"EmergencyFire: An Ontology for Fire Emergency Situations","authors":"Kattiuscia Bitencourt, F. Durão, Manoel G. Mendonça","doi":"10.1145/2820426.2820453","DOIUrl":"https://doi.org/10.1145/2820426.2820453","url":null,"abstract":"The emergency response process is quite complex since there is a wide variety of elements to be evaluated for taking decisions. Uncertainties generated by subjectivity and imprecision affect the safety and effectiveness of actions. The aim of this paper is to develop an ontology for emergency response protocols, in particular, to fires in buildings. This developed ontology supports the knowledge sharing, evaluation and review of the protocols used, contributing to the tactical and strategic planning of organizations. The construction of the ontology was based on the methodology Methontology. The domain specification and conceptualization were based in qualitative research, in which were extracted 131 terms with definitions, of which 85 were assessed by specialists. From there, in the Protégé tool, the domain's taxonomy and the axioms were created. The specialists validated the ontology using the assessment by human approach (taxonomy, application and structure). Thus, a sustainable ontology model to the rescue tactical phase was ensured.","PeriodicalId":224319,"journal":{"name":"Proceedings of the 21st Brazilian Symposium on Multimedia and the Web","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116472805","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}
Paulo Duarte, Luís Fernando Maia Silva, Francisco A. A. Gomes, Windson Viana, Fernando A. M. Trinta
{"title":"Dynamic Deployment for Context-Aware Multimedia Environments","authors":"Paulo Duarte, Luís Fernando Maia Silva, Francisco A. A. Gomes, Windson Viana, Fernando A. M. Trinta","doi":"10.1145/2820426.2820443","DOIUrl":"https://doi.org/10.1145/2820426.2820443","url":null,"abstract":"A current challenge of mobile computing is the need to an infrastructure that, in development-time, allows applications can dinamically adapt itself to the scenario. One of approaches that allows this infrastructure is the component-based middleware platforms use. An example of middleware is LoCCAM, intended for devices with Android operating system. This paper presents the LoCCAM evolution. Now, LoCCAM perform dinamically deploy of new components according to changes in the environment. We aim to make LoCCAM an infrastructure capable of providing support for mobile multimedia systems in IoT scenario. Dynamic deployment also enables applications to adapt dynamically to different versions of Android OS. We had create an application that uses mobile augmented reality based context-aware concepts as case study. We tested this application in two smartphones with different Android versions and one smartwatch with Android Wear.","PeriodicalId":224319,"journal":{"name":"Proceedings of the 21st Brazilian Symposium on Multimedia and the Web","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130610568","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}
{"title":"PlaySEM: a Platform for Rendering MulSeMedia Compatible with MPEG-V","authors":"Estêvão Bissoli Saleme, Celso A. S. Santos","doi":"10.1145/2820426.2820450","DOIUrl":"https://doi.org/10.1145/2820426.2820450","url":null,"abstract":"MulSeMedia is related to the combination of traditional media (e.g. text, image and video) with other objects that aim to stimulate other human senses, such as mechanoreceptors, chemoreceptors and thermoreceptors. Existing solutions embed the control of actuators in the applications, thus limiting their reutilization in other types of applications or different media players. This work presents PlaySEM, a platform that brings a new approach for simulating and rendering sensory effects that operates independently of any Media Player, and that is compatible with the MPEG-V standard, while taking into account reutilization requirement. Regarding this architecture conjectures are tested focusing on the decoupled operation of the renderer.","PeriodicalId":224319,"journal":{"name":"Proceedings of the 21st Brazilian Symposium on Multimedia and the Web","volume":"2011 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129150714","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}
{"title":"Mobile Video Annotations: A Case Study on Supporting Rehabilitation Exercises","authors":"B. C. Cunha, Rodolfo Dias Correia, M. G. Pimentel","doi":"10.1145/2820426.2820449","DOIUrl":"https://doi.org/10.1145/2820426.2820449","url":null,"abstract":"Annotations enable us to highlight key points or add information to content presented, for instance, on paper or digital media. Even though smartphones and tablets facilitate video capturing, currently only few applications allow limited video annotations using the mobile device itself. Given that video annotations can assist many tasks that depend or can be enhanced by video capturing, in previous work we have contributed with a tool for allowing multimodal video annotation using mobile devices. Upon experimenting with the tool, we identified that reviewing rehabilitation exercise videos can be especially enhanced with video annotations. Professionals in the field of physiotherapy and occupational therapy can add relevant annotations for their patients to improve performance of their exercises. After an evaluation with a specialist in occupational therapy, we identified new requirements associated with the monitoring of patients. We then identified the opportunity to develop a monitoring system with the collaboration of two rehabilitation specialists. Since these two specialists work with mirror therapy, we defined requirements that are relevant for this type of therapy. The system was developed to support the monitoring of exercises combined with video recording and annotation capabilities. The system aims to support rehabilitation therapy by distance: therapists can monitor patients as they record videos that are sent for evaluation. We identified requirements that may be applied in many scenarios, however mirror therapy demanded many specific requirements related to the recording of videos.","PeriodicalId":224319,"journal":{"name":"Proceedings of the 21st Brazilian Symposium on Multimedia and the Web","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129553275","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}
Diogo P. Busanello da Silva, Mathias H. Weber, Frank Siqueira
{"title":"S3M: A Suggestion Mechanism for Semantic Web Service Composition","authors":"Diogo P. Busanello da Silva, Mathias H. Weber, Frank Siqueira","doi":"10.1145/2820426.2820456","DOIUrl":"https://doi.org/10.1145/2820426.2820456","url":null,"abstract":"Web Service composition is a complex and error-prone process that requires the support of software tools in order to become feasible. Composition tools can help a developer to select compatible services from vast service repositories, taking into account characteristics such as port compatibility, availability, cost, and so on. This paper describes S3M, a service suggestion mechanism that, coupled with the CVFlow workflow editor, helps developers to select services and to build compositions. Service suggestions are given to the user taking into account the semantic description of Web Services in SAWSDL format.","PeriodicalId":224319,"journal":{"name":"Proceedings of the 21st Brazilian Symposium on Multimedia and the Web","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121349652","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}