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- IoT in Greenhouse Supported by Climate Conditions Management PlatformPublication . Galvão, João; Neves, Filipe; Vieira, João; Rafael Simões; Ribeiro, Vânia; Costa, PauloThe system called iMeteo4all is a management platform for several physical variables, inherent to the control and management of climatic conditions inside structures, for the intensive production of plants called greenhouses and to be one contribution for agriculture 4.0. The objective of this work was to design and develop software for monitoring and managing the quality of the internal environment, through successive data collection/readings provided by a network of sensors and process automation for more efficient and sustainable agriculture. Different case studies of greenhouses whose production technologies are distinct, such as aquaponics and soil technologies were considered, in these controlled environment structures to produce plants (edible and non-edible). This platform requires an Internet address to perform the interface among a tablet, a cell phone, a computer and communication systems between a net of IoT (Internet of Things) sensors, which collect climatic variables inherent to growth and connected to several MCUs (Micro Controller Unit). Subsequently, managers and employees will be able to view and interact in real time, making more accurate decisions, depending on the climatic variations inside the greenhouse, increasing efficiency in several areas in greenhouses. It is possible to access the history of each sensor and configure automations according to the collected data. Access to data from this solution is secure through an SSL (Secure Sockets Layer) certificate applied to the public https address. If hardware failures exist, the system is prepared to be restored through regular backups in the cloud and internally, providing users with confidence and robustness in the constant use of this platform.
- DinofelisAR: Users’ Perspective About a Mobile AR Application in Cultural HeritagePublication . Marto, Anabela; Gonçalves, Alexandrino; Sousa, A. Augusto deAugmented reality has seen an increased popularity among the last decades due to technological advances and, a consequent growth of the amount of augmented reality systems, became available. However, in order to diffuse this technology successfully, understand users’ feelings when using augmented reality applications is considered a major issue. This study implemented this technology in a cultural heritage outdoor context and tested it in-situ to evaluate user’s perspective regarding to personal satisfaction – including cultural enrichment acquired –, ease of use and their intention to use it. The results obtained, through questionnaires, presented the visitors acceptance regarding the usage of this type of solutions among a cultural heritage context, since it may become future visits more pleasant and desirable. The user’s majority expressed the request to use this technology more often in cultural heritage spaces.
- Exploring Cultural Heritage Using Augmented Reality Through Google’s Project Tango and ARCorePublication . Voinea, Gheorghe-Daniel; Girbacia, Florin; Postelnicu, Cristian Cezar; Marto, AnabelaThis research is focused on the importance of using modern technologies in preserving and exploring Cultural Heritage (CH). Specifically, Augmented Reality (AR) has the potential to enhance the user experience related to cultural heritage. We briefly present the main technological approaches in CH and a state of the art in mobile augmented reality. The latest Software Development Kit (SDK) for building AR applications are reviewed and compared. The 3D object that participants could place in the real environment was obtained using photogrammetry, a popular and relatively easy to use digitization technique. The virtual object represents a fortified church and is part of a group of UNESCO monuments from the historical and ethnographical region called “Țara Bârsei”, located in Brasov, Romania. We also provided some guidelines to ensure an accurate 3D reconstruction of any object. We assess users’ perception regarding two mobile AR applications, one based on Project Tango while the other was developed using ARCore. Results confirm that AR improves user experience and increases the enjoyment of learning about cultural heritage.
- Study of the Innovative Characteristics of a New Technology for Bladder and Intestinal Elimination: An Empirical Study for the Evaluation of Ease of Use and Perceived UtilityPublication . Parreira, Joana; Fernandes, Daniela; Mónico, Lisete; Salgueiro-Oliveira, Anabela; Sousa, Liliana; Costa, Paulo Santos; Marques, Inês; Ventura, Daniel; Silva, Mónica; Cruz, Arménio; Fonseca, César; Bernardes, Rafael; Carvalho, Carla; Braga, Luciene; Parreira, PedroBackground: Bedpans are medical devices usually used in the healthcare delivery to bedridden patients which health condition implies that bladder and/or intestinal elimination is done in bed. Physical and psychological discomfort experienced by patients in these situations it’s a challenge to professionals to look for innovative proposals, looking for the reduction of negative impacts in many levels. Objective: To evaluate the acceptance, by general population of (i) classical bedpans currently in the market and (ii) an inflatable proposal based on the Technology Acceptance Model. Method: The sample included 108 participants, aged between 19 and 81 years, caretakers/users of bedpans. The Technology Acceptance Model was used to evaluate the perception of utility and ease of use. All participants completed an online self-response questionnaire, later submitted to Exploratory Factor Analysis and Confirmatory and reliability study. Results: The results allow indicating a high degree of acceptance for the value proposition of the innovative bedpan, compared to the classic model. Conclusion: This study constitutes an important contribution to the human sciences, since it allows evaluating the ease of use and utility by users of bedpans, evidencing the importance of the innovative characteristics proposed to the new inflated bedpan.
- Light Field Image CompressionPublication . Conti, Caroline; Soares, Luís Ducla; Nunes, Paulo; Perra, Cristian; Assunção, Pedro; Sjöström, Mårten; Li, Yun; Olsson, Roger; Jennehag, UlfLight field imaging based on a single-tier camera equipped with a micro-lens array has currently risen up as a practical and prospective approach for future visual applications and services. However, successfully deploying actual light field imaging applications and services will require identifying adequate coding solutions to efficiently handle the massive amount of data involved in these systems. In this context, this chapter presents some of the most recent light field image coding solutions that have been investigated. After a brief review of the current state of the art in image coding formats for light field photography, an experimental study of the rate-distortion performance for different coding formats and architectures is presented. Then, aiming at enabling faster deployment of light field applications and services in the consumer market, a scalable light field coding solution that provides backward compatibility with legacy display devices (e.g., 2D, 3D stereo, and 3D multiview) is also presented. Furthermore, a light field coding scheme based on a sparse set of microimages and the associated blockwise disparity is also presented. This coding scheme is scalable with three layers such that the rendering can be performed with the sparse micro-image set, the reconstructed light field image, and the decoded light field image.
- An Electronic Questionnaire for Liver Assessment in Congenital Disorders of Glycosylation (LeQCDG): A Patient-Centered StudyPublication . Marques-da-Silva, Dorinda; Francisco, R.; Ferreira, V. dos Reis; Forbat, L.; Lagoa, Ricardo; Videira, P. A.; Witters, P.; Jaeken, J.; Cassiman, D.Congenital disorders of glycosylation (CDG) are ultra-rare diseases showing a great phenotypic diversity ranging from mono-to multi-organ/multisystem involvement. Liver involvement, mostly nonprogressive, is often reported in CDG patients. The main objectives of this work were (1) to better understand liver involvement in CDG patients through a liver electronic questionnaire targeting CDG families (LeQCDG) and (2) to compare responses from LeQCDG participants with literature review regarding the prevalence of liver disease and the occurrence of liver symptoms in CDG patients. The network of patient advocacy groups, families and professionals (CDG & Allies – PPAIN) developed the LeQCDG by adapting validated published questionnaires. The LeQCDG was approved by an ethics committee, and the recruitment of patients and caregivers proceeded through social media platforms. Participants were asked to report past or present liver-related symptoms (e.g. hepatomegaly, liver fibrosis and cirrhosis) and laboratory results (e.g. biochemical and/ or radiological). From 11 December 2016 to 22 January 2017, 155 questionnaires were completed. Liver disease was present in 29.9% of CDG patients. Main symptoms reported included hepatomegaly, increased levels of serum transaminases, fibrosis, steatosis and cirrhosis. The data obtained in this online survey confirm findings from a recent literature review of 25 years of published evidence (r ¼ 0.927, P ¼ 0.02). Our questionnaire collected large amounts of meaningful, clinical and patient-oriented data in a short period of time without geographic limitations. Internet-based approaches are especially relevant in the context of ultra-rare diseases such as CDG.
- Using Mental Health Indicators to Improve Health Care Management: A Web-based ApproachPublication . Vinci, André L. T.; Lima, Inacia Bezerra de; Miyoshi, Newton S. B.; Ramalho, André; Freitas, Alberto; Rijo, Rui; Alves, DomingosMental health indicators are essential for monitoring people’s mental health status, developing mental health policies, and evaluating the performance of such policies. The aim of this paper is to describe the development of a web-based tool for mental health indicators capable to support the management of Brazilian mental health care networks. The SISAM is a web information system responsible for management and provision of mental health information in Brazil and it was chosen as the use case of this study. The indicators were developed as a decision support web tool for public health managers. The tool is able to calculate 11 indicators related to inpatient care. A descriptive analysis of all indicators is presented using SISAM data from 2017. The results generated by the tool are promising and could provide improvements on care monitoring, evaluation of possible trends and investments in prevention and promotion in mental health care.
- Time-Aware Focused Web CrawlingPublication . Pereira, Pedro; Macedo, Joaquim; Craveiro, Olga; Madeira, HenriqueThere is a plethora of information inside the Web. Even the top commercial search engines can not download and index all the available information. So, in the recent years, there are several research works on the design and implementation of focused topic crawlers and also on geographic scope crawlers. Despite other areas of information retrieval, research on Web crawling is not using the temporal information extracted from Web pages in the used crawling criteria. Therefore, our research challenge is the use of temporal data extracted from Web pages as the main crawling criteria to satisfy a given temporal focus. The importance of the time dimension is quite amplified when combined with topic or geography, but now we want to study it isolated. The used approach is based on temporal segmentation of Web pages text. It only follows links within segments tagged with dates in the scope of restriction. A precision around 75% was achieved in preliminary experimental results.
- Query Expansion with Temporal Segmented TextsPublication . Craveiro, Olga; Macedo, Joaquim; Madeira, HenriqueThe use of temporal data extracted from text, to improve the effectiveness of Information Retrieval systems, has recently been the focus of important research work. Our research hypothesis is that the usage of the temporal relationship between words improves the Information Retrieval results. For this purpose, the texts are temporally segmented to establish a relationship between words and dates found in texts. This approach was applied in Query Expansion systems, using a collection with Portuguese newspaper texts. The results showed that the use of the temporality of words can enhance retrieval effectiveness. In particular for time-sensitive queries, we achieved 9.5% improvement in Precision@10. To our knowledge, this is the first work using temporal text segmentation to improve retrieval results.
- Comparative analysis of mandibular symphysis platesPublication . Dinis, Jairson C.; Kemmoku, Daniel T.; Noritomi, Pedro Y.; Silva, Jorge V. L.; Ruben, Rui B.Mandibular symphysis plates, used to heal fractures, can be made from different materials, normally titanium or CoCr alloys. In this work these two materials are tested and compared in order to study the plate's performance in fracture stabilization. This is a computational work performed with the advice of Brazilian maxoillofacial surgeons.