981 resultados para Context Recognition
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Hardware/software (HW/SW) cosimulation integrates software simulation and hardware simulation simultaneously. Usually, HW/SW co-simulation platform is used to ease debugging and verification for very large-scale integration (VLSI) design. To accelerate the computation of the gesture recognition technique, an HW/SW implementation using field programmable gate array (FPGA) technology is presented in this paper. The major contributions of this work are: (1) a novel design of memory controller in the Verilog Hardware Description Language (Verilog HDL) to reduce memory consumption and load on the processor. (2) The testing part of the neural network algorithm is being hardwired to improve the speed and performance. The American Sign Language gesture recognition is chosen to verify the performance of the approach. Several experiments were carried out on four databases of the gestures (alphabet signs A to Z). (3) The major benefit of this design is that it takes only few milliseconds to recognize the hand gesture which makes it computationally more efficient.
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The Annual South Florida Education Research Conference is a presentation of scholarly work by students and faculty of member institutions and the community.
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Whereas previous research has demonstrated that trait ratings of faces at encoding leads to enhanced recognition accuracy as compared to feature ratings, this set of experiments examines whether ratings given after encoding and just prior to recognition influence face recognition accuracy. In Experiment 1 subjects who made feature ratings just prior to recognition were significantly less accurate than subjects who made no ratings or trait ratings. In Experiment 2 ratings were manipulated at both encoding and retrieval. The retrieval effect was smaller and nonsignificant, but a combined probability analysis showed that it was significant when results from both experiments are considered jointly. In a third experiment exposure duration at retrieval, a potentially confounding factor in Experiments 1 and 2, had a nonsignificant effect on recognition accuracy, suggesting that it probably does not explain the results from Experiments 1 and 2. These experiments demonstrate that face recognition accuracy can be influenced by processing instructions at retrieval.
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Psychologists have studied self-recognition in human infants as an indication of self-knowledge (Amsterdam, 1972) and the development of abstract thought processes. Gallup (1970) modified the mark test used in human infant work to examine if nonhuman primates showed similar evidence of mirror self-recognition. Chimpanzees (Pan troglodytes) and orangutans (Pongo pygmnaeus) pass the mirror self-recognition test with limited mirror training or exposure. Other species of primates, such as gorillas and monkeys, have not passed the mirror test, despite extensive mirror exposure and training (Gallup, 1979). This project examined a gorilla (G. gorilla gorilla) named Otto in the traditional mark test. Using the modified mark-test, there were more incidents of touching the marked area while Otto was in front of the mirror than when he was not in front of the mirror. These results indicated that Otto was able to show some evidence of selfawareness.
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This thesis investigates the crossover from and intersection between tangible and intangible heritage in the context of World Heritage. Since the start of the twenty-first century, intangible heritage has become increasingly important in international cultural heritage conservation theory and practice. In heritage literature, intangible heritage has been theorized in relation to tangible or built heritage, thereby extending the definition of cultural heritage to consider a holistic perspective. New heritage conservation instruments have been created for the protection of intangible heritage, such as most prominently the 2003 UNESCO Convention for the Safeguarding of the Intangible Cultural Heritage. The changing conception of cultural heritage that goes beyond tangible heritage has also influenced existing instruments like the 1972 UNESCO Convention concerning the protection of the World Cultural and Natural Heritage. The thesis studies how intangible heritage has been recognized and interpreted in implementing the concept of cultural heritage as defined by the World Heritage Convention. It examines the historical development of the concept of World Cultural Heritage with the aim of tracing the construction of intangible heritage in this context. The thesis consists of six chapters. The introduction sets out the research problem and research question. In the literature review, international cultural heritage conservation is portrayed as the research context, the knowledge gap between World Heritage and intangible heritage is identified and an understanding of the research problem deepened, and methods from similar research in the subject area are presented. The methodology in the third chapter describes choices made concerning the research paradigm, research approach and strategy, the use of concepts and illustrative examples, as well as data collection and analysis methods. Knowledge is constructed using primarily a historical approach and related methods. Through the analysis of pertinent documents and heritage discourses, an understanding of the concept of intangible heritage is developed and the concept of World Cultural Heritage is investigated. In the fourth chapter, intangible heritage is studied by looking at specific cultural heritage discourses, that is, a scientific, a UNESCO, and an ICOMOS discourse. Intangible heritage is theorized in relation to the concepts of tangible heritage, heritage value, and cultural heritage. Knowledge gained in this chapter serves as a theoretical lens to trace the recognition of and tease out interpretations of intangible heritage in the context of implementing the concept of World Cultural Heritage. The results are presented in chapter five. A historical development is portrayed in five time periods and for the concepts of cultural heritage, Outstanding Universal Value, the criteria to assess World Heritage value, and authenticity. The conclusion summarizes the main outcomes, assesses the thesis’ contribution to scientific knowledge as well as its limitations, and outlines possible further research. The main results include the identification of the term intangible heritage as an indicator for a paradigm shift and a new approach to conceiving cultural heritage in international cultural heritage conservation. By focusing on processes and the living relationship between people and their environment or place, intangible heritage emphasizes the anthropological. In the context of this conception, intangible heritage takes on two meanings. First, value is attributed by people and hence, is inherently immaterial. Secondly, place is constituted of a tangible-intangible continuum in terms of attributes. A paradigm shift and increasing recognition of an anthropological approach to cultural heritage were identified for all discourses, that is, UNESCO, ICOMOS, the scientific field, and World Heritage. For World Heritage, intangible heritage was recognized indirectly in terms of historical associations during the 1970s and 1980s. The anthropological shift occurred in the early 1990s. The term intangible was introduced and the meaning of intangible heritage was extended to include cultural associations. The subsequent decade is characterized by a process of internalization and implementation of the new approach to cultural heritage. The 2003 Intangible Cultural Heritage Convention created momentum. By the early 2010s, while not explicitly recognizing the immaterial character of values, a holistic approach to cultural heritage was fully endorsed that considers the idea of intangible attributes as carriers of values. An understanding of the recognition of intangible heritage through the implementation of the World Heritage Convention and scientific research in general provide an important knowledge base for implementing the Convention in a more coherent, objective, and well-informed way.
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Same-sex parenting is by no means a new phenomenon but the legal recognition and acceptance of gay and lesbian couples as parents is a relatively recent development in most countries. Traditionally, such recognition has been opposed on the basis of the claim that the best interests of children could not be met by gay and lesbian parents. This thesis examines the validity of this argument and it explores the true implications of the best interests principle in this context. The objective is to move away from subjective or moral conceptions of the best interests principle to an understanding which is informed by relevant sociological and psychological data and which is guided by reference to the rights contained in the UN Convention on the Rights of the Child. Using this perspective, the thesis addresses the overarching issue of whether the law should offer legal recognition and protection to gay and lesbian families and the more discrete matter of how legal protection should be provided. It is argued that the best interests principle can be used to demand that same-sex parenting arrangements should be afforded legal recognition and protection. Suggestions are also presented as to the most appropriate manner of providing for this recognition. In this regard, guidance is drawn from the English and South African experience in this area. Overall, the objective is to assess the current laws from the perspective of the best interests principle so as to ensure that the law operates in a manner which adheres to the rights and interests of children.
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This thesis investigates the crossover from and intersection between tangible and intangible heritage in the context of World Heritage. Since the start of the twenty-first century, intangible heritage has become increasingly important in international cultural heritage conservation theory and practice. In heritage literature, intangible heritage has been theorized in relation to tangible or built heritage, thereby extending the definition of cultural heritage to consider a holistic perspective. New heritage conservation instruments have been created for the protection of intangible heritage, such as most prominently the 2003 UNESCO Convention for the Safeguarding of the Intangible Cultural Heritage. The changing conception of cultural heritage that goes beyond tangible heritage has also influenced existing instruments like the 1972 UNESCO Convention concerning the protection of the World Cultural and Natural Heritage. The thesis studies how intangible heritage has been recognized and interpreted in implementing the concept of cultural heritage as defined by the World Heritage Convention. It examines the historical development of the concept of World Cultural Heritage with the aim of tracing the construction of intangible heritage in this context. The thesis consists of six chapters. The introduction sets out the research problem and research question. In the literature review, international cultural heritage conservation is portrayed as the research context, the knowledge gap between World Heritage and intangible heritage is identified and an understanding of the research problem deepened, and methods from similar research in the subject area are presented. The methodology in the third chapter describes choices made concerning the research paradigm, research approach and strategy, the use of concepts and illustrative examples, as well as data collection and analysis methods. Knowledge is constructed using primarily a historical approach and related methods. Through the analysis of pertinent documents and heritage discourses, an understanding of the concept of intangible heritage is developed and the concept of World Cultural Heritage is investigated. In the fourth chapter, intangible heritage is studied by looking at specific cultural heritage discourses, that is, a scientific, a UNESCO, and an ICOMOS discourse. Intangible heritage is theorized in relation to the concepts of tangible heritage, heritage value, and cultural heritage. Knowledge gained in this chapter serves as a theoretical lens to trace the recognition of and tease out interpretations of intangible heritage in the context of implementing the concept of World Cultural Heritage. The results are presented in chapter five. A historical development is portrayed in five time periods and for the concepts of cultural heritage, Outstanding Universal Value, the criteria to assess World Heritage value, and authenticity. The conclusion summarizes the main outcomes, assesses the thesis’ contribution to scientific knowledge as well as its limitations, and outlines possible further research. The main results include the identification of the term intangible heritage as an indicator for a paradigm shift and a new approach to conceiving cultural heritage in international cultural heritage conservation. By focusing on processes and the living relationship between people and their environment or place, intangible heritage emphasizes the anthropological. In the context of this conception, intangible heritage takes on two meanings. First, value is attributed by people and hence, is inherently immaterial. Secondly, place is constituted of a tangible-intangible continuum in terms of attributes. A paradigm shift and increasing recognition of an anthropological approach to cultural heritage were identified for all discourses, that is, UNESCO, ICOMOS, the scientific field, and World Heritage. For World Heritage, intangible heritage was recognized indirectly in terms of historical associations during the 1970s and 1980s. The anthropological shift occurred in the early 1990s. The term intangible was introduced and the meaning of intangible heritage was extended to include cultural associations. The subsequent decade is characterized by a process of internalization and implementation of the new approach to cultural heritage. The 2003 Intangible Cultural Heritage Convention created momentum. By the early 2010s, while not explicitly recognizing the immaterial character of values, a holistic approach to cultural heritage was fully endorsed that considers the idea of intangible attributes as carriers of values. An understanding of the recognition of intangible heritage through the implementation of the World Heritage Convention and scientific research in general provide an important knowledge base for implementing the Convention in a more coherent, objective, and well-informed way.
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A primary goal of context-aware systems is delivering the right information at the right place and right time to users in order to enable them to make effective decisions and improve their quality of life. There are three key requirements for achieving this goal: determining what information is relevant, personalizing it based on the users’ context (location, preferences, behavioral history etc.), and delivering it to them in a timely manner without an explicit request from them. These requirements create a paradigm that we term as “Proactive Context-aware Computing”. Most of the existing context-aware systems fulfill only a subset of these requirements. Many of these systems focus only on personalization of the requested information based on users’ current context. Moreover, they are often designed for specific domains. In addition, most of the existing systems are reactive - the users request for some information and the system delivers it to them. These systems are not proactive i.e. they cannot anticipate users’ intent and behavior and act proactively without an explicit request from them. In order to overcome these limitations, we need to conduct a deeper analysis and enhance our understanding of context-aware systems that are generic, universal, proactive and applicable to a wide variety of domains. To support this dissertation, we explore several directions. Clearly the most significant sources of information about users today are smartphones. A large amount of users’ context can be acquired through them and they can be used as an effective means to deliver information to users. In addition, social media such as Facebook, Flickr and Foursquare provide a rich and powerful platform to mine users’ interests, preferences and behavioral history. We employ the ubiquity of smartphones and the wealth of information available from social media to address the challenge of building proactive context-aware systems. We have implemented and evaluated a few approaches, including some as part of the Rover framework, to achieve the paradigm of Proactive Context-aware Computing. Rover is a context-aware research platform which has been evolving for the last 6 years. Since location is one of the most important context for users, we have developed ‘Locus’, an indoor localization, tracking and navigation system for multi-story buildings. Other important dimensions of users’ context include the activities that they are engaged in. To this end, we have developed ‘SenseMe’, a system that leverages the smartphone and its multiple sensors in order to perform multidimensional context and activity recognition for users. As part of the ‘SenseMe’ project, we also conducted an exploratory study of privacy, trust, risks and other concerns of users with smart phone based personal sensing systems and applications. To determine what information would be relevant to users’ situations, we have developed ‘TellMe’ - a system that employs a new, flexible and scalable approach based on Natural Language Processing techniques to perform bootstrapped discovery and ranking of relevant information in context-aware systems. In order to personalize the relevant information, we have also developed an algorithm and system for mining a broad range of users’ preferences from their social network profiles and activities. For recommending new information to the users based on their past behavior and context history (such as visited locations, activities and time), we have developed a recommender system and approach for performing multi-dimensional collaborative recommendations using tensor factorization. For timely delivery of personalized and relevant information, it is essential to anticipate and predict users’ behavior. To this end, we have developed a unified infrastructure, within the Rover framework, and implemented several novel approaches and algorithms that employ various contextual features and state of the art machine learning techniques for building diverse behavioral models of users. Examples of generated models include classifying users’ semantic places and mobility states, predicting their availability for accepting calls on smartphones and inferring their device charging behavior. Finally, to enable proactivity in context-aware systems, we have also developed a planning framework based on HTN planning. Together, these works provide a major push in the direction of proactive context-aware computing.
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The study of ichthyio-plankton stages and its relations with the environment and other organisms is therefore crucial for a correct use of fishery resources. In this context, the extraction and the analysis of the content of the digestive tract, is a key method for the identification of the diet in early larval stages, the determination of the resources they rely on and possibly a comparison with the diet of other species. Additionally this approach could be useful in determination on occurrence of species competition. This technique is preceded by the analysis of morphometric data (Blackith & Reyment, 1971; Marcus, 1990), that is the acquisition of quantitative variables measured from the morphology of the object of study. They are linear distances, count, angles and ratios. The subsequent application of multivariate statistical methods, aims to quantify the changes in morphological measures between and within groups, relating them to the type and size of prey and evaluate if some changes appear in food choices along the larvae growth.
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There is increasing recognition of the importance of social and cultural differences in shaping the diversity of the ageing experience in contemporary Britain. Various social and cultural factors, such as those associated with class, ethnicity, gender and disability, influence people’s living circumstances and sources of support in later life. While they have been the subject of considerable speculation, ageing in a non-heterosexual context remains remarkably under-studied. This paper examines the difference that being non-heterosexual makes to how people experience ageing and later life. It draws on quantitative and qualitative data gathered for a British study of the living circumstances of non-heterosexuals aged between the fifties and the eighties. Previous work has overwhelmingly emphasised how individuals manage their sexual identities, but this paper focuses on the factors that shape the non-heterosexual experience of ageing and later life. Particular attention is paid to the relational and community contexts in which non-heterosexuals negotiate personal ageing. This not only provides insights into the specific challenges that ageing presents for non-heterosexuals, but also offers insights into the challenges faced by ageing non-heterosexuals and heterosexuals in ‘ detraditionalised ’ settings.
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Several studies have reported impairments in decoding emotional facial expressions in intimate partner violence (IPV) perpetrators. However, the mechanisms that underlie these impaired skills are not well known. Given this gap in the literature, we aimed to establish whether IPV perpetrators (n = 18) differ in their emotion decoding process, attentional skills, and testosterone (T), cortisol (C) levels and T/C ratio in comparison with controls (n = 20), and also to examine the moderating role of the group and hormonal parameters in the relationship between attention skills and the emotion decoding process. Our results demonstrated that IPV perpetrators showed poorer emotion recognition and higher attention switching costs than controls. Nonetheless, they did not differ in attention to detail and hormonal parameters. Finally, the slope predicting emotion recognition from deficits in attention switching became steeper as T levels increased, especially in IPV perpetrators, although the basal C and T/C ratios were unrelated to emotion recognition and attention deficits for both groups. These findings contribute to a better understanding of the mechanisms underlying emotion recognition deficits. These factors therefore constitute the target for future interventions.
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Dissertação de Mestrado, Engenharia Informática, Faculdade de Ciências e Tecnologia, Universidade do Algarve, 2014