Percepção e ações educativas em ambientes escolares: enfoques aos documentos legais determinantes em área de proteção ambiental

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior

Avaliando o impacto da utilização de renderizações panorâmicas para a navegação em ambientes virtuais

Panoramic rendering is the visualization of three-dimensional objects in a virtual environment through a wide viewing angle. This work investigated if the use of panoramas is able to promote faster searches in a virtual environment. Panoramas allow the presentation of space through less need to change the orientation of the camera, especially for the case of projections spanning 360º surrounding the user, which can benefit searching. However, the larger the angle, more distorted is the visualization of the environment, causing confusion in navigation. The distortion is even bigger when the user changes the pitch of the camera, by looking up or down. In this work we developed a technique to eliminate specifically the distortions caused by changes in pitch, which was called hemispheric projection. Experiments were done to evaluate the performance of search navigation through perspective, cylindrical and hemispherical projections. The results indicate that navigating with perspective projection is superior than navigating with panoramic projections, possibly due to factors such as (i) lack of experience of the participants in understanding the scenes displayed as panoramas, (ii) the inherent presence of distortion in panoramic projections and (iii) a lower display resolution because the objects are presented in smaller sizes in panoramic projections, making the perception of details more difficult. However, the hemispherical projection was better than the cylindrical, indicating that the developed technique provides benefits for navigation compared to current techniques of panoramic projection. The hemispheric projection also provided the least amount of changes of camera orientation, which is an indication that the hemispheric projections may be particularly useful in situations where there are restrictions on the ease to change the orientation. Future research will investigate the performance of cameras interactions on slower devices, such as using only keyboard, or brain-machine interfaces

Macrofauna de ambientes não consolidados adjacentes à recifes da área de proteção ambiental dos recifes de corais Rio Grande do Norte, Brasil

This study aimed to characterize, for the first time, the benthic invertebrates that inhabit the region of soft bottoms adjacent to the APARC reefs in order to situate them as an important component of infralittoral coastal areas of Northeast Brazil. Soft bottoms areas of APARC corresponds to infralittoral zones vegetated by seagrass Halodule wrightii and unvegetated infralittoral zones, both subjected to substantial hydrodynamic stress. Through scuba diving, biological and sedimentary samples of both habitats were analyzed, with a cylindrical sampler. We identified 6160 individuals belonging to 16 groups and 224 species. The most abundant macrofaunal group was Polychaeta (43%), followed by Mollusca (25%) and Crustacea (14%), what was expected for these environments. In the first chapter, regarding vegetated areas, we tested three hypotheses: the existence of differences in the faunal structure associated with H. wrightii banks submitted to different hydrodynamic conditions; the occurrence of minor temporal variations on the associated macrofauna of banks protected from hydrodynamic stress; and if the diversity of macrofauna is affected by both benthophagous predators and H. wrightii biomass. It was observed that macrofauna associated at the Exposed bank showed differences in structure when comparing the Protected bank, the granulometry of the sediments, that co-varies with the hydrodynamism, was the cause of these variations. The results also pointed to a lower temporal variation in the macrofaunal structure on the Protected bank and a negative relation between macrofaunal and benthophagous fish abundance. At the Exposed bank, a greater faunal diversity was observed, probably due to the higher seagrass biomass. The second chapter compares the vegetated and non-vegetated areas in order to test the hypothesis that due to greater seasonal stability in tropical environments, seagrass structure would act to distinguish the vegetated and non-vegetated areas macrofauna, over time. It was also expected that depositivores were the most representative invertebrates on non-vegetated environments, on the assumption that the seagrass bank would work as a source of debris to adjacent areas, enriching them. Considering all sampling periods, the total macrofauna abundance and diversity were higher in vegetated areas, when compared to non-vegetated ones. Seasonally, the structural complexity provided by Halodule differentiated more clearly the fauna from vegetated and non-vegetated areas, but only at the climatic extremes, i.e. Dry season (extreme climatic stability, with low hydronamism variation) and Rainy season (great hydrodynamism variation and probably vegetated bank burial). Furthermore, the high organic matter levels measured in the sandy banks coincided with an outstanding trophic importance of deposit feeders, proving the debris-carrying hypothesis. The last chapter focused on the non-vegetated areas, where we tested that the hypothesis infaunal halo in tropical reefs depending on local granulometry. In this context, we also tested the hypothesis that benthophagous fish predation would have an effect on the low abundance of macrofaunal groups due to the high hydrographic stress, thus allowing other predatory groups to have greater importance in these environments. Proving the hypothesis, no spatial variation, both on abundance families neither on community structure, occur along distance of the edge reefs. However, we found that complex combinations of physical factors (grain size and organic matter levels originated from local hydronamic conditions) covary with the distance from the reefs and has stronger influence on macrofauna than considered biological factors, such as predation by benthophagous fishes. Based on the main results, this study shows that unconsolidated areas around APARC reefs are noteworthy from an ecological and conservational point of view, as evidenced by the biota-environment and organismal relations, never before described for these areas

Modelo de interoperabilidade para utilização dos recursos dos ambientes virtuais de aprendizagem através de dispositivos móveis

The technological evolution has been making the Distance Education accessible for a greater number of citizens anytime and anywhere. The potential increase of the supply for mobile devices integrated to mobile learning environments allows that the information comes out of the physical environment, creating opportunities for students and teachers to create geographically distributed learning scenarios. However, many applications developed for these environments remain isolated from each other and do not become integrated sufficiently into the virtual learning environments (AVA). This dissertation presents an interoperability model between mobile devices and distinct AVA based on webservices. For the conception of this model, requirements engineering and software architecture techniques were used. With the goal of showing the model viability, a mobile application focused on surveys has been developed, and additionally, the main functionalities related to the interoperability were tested

Investigando a compressão da percepção de distância em ambientes virtuais através da comparação entre dispositivos de visualização

The correct distance perception is important for executing various interactive tasks such as navigation, selection and manipulation. It is known, however, that, in general, there is a significant distance perception compression in virtual environments, mainly when using Head-Mounted Displays - HMDs. This perceived distance compression may bring various problems to the applications and even affect in a negative way the utility of those applications that depends on the correct judgment of distances. The scientific community, so far, have not been able to determine the causes of the distance perception compression in virtual environments. For this reason, it was the objective of this work to investigate, through experiments with users, the influence of both the field-of-view - FoV - and the distance estimation methods on this perceived compression. For that, an experimental comparison between the my3D device and a HMD, using 32 participants, seeking to find information on the causes of the compressed perception, was executed. The results showed that the my3D has inferior capabilities when compared to the HMD, resulting in worst estimations, on average, in both the tested estimation methods. The causes of that are believed to be the incorrect stimulus of the peripheral vision of the user, the smaller FoV and the smaller immersion sense, as described by the participants of the experiment.

Infoestrutura: um sistema em nuvem para prover contexto como serviço no cenário de internet das coisas integrado a ambientes veiculares

Through numerous technological advances in recent years along with the popularization of computer devices, the company is moving towards a paradigm “always connected”. Computer networks are everywhere and the advent of IPv6 paves the way for the explosion of the Internet of Things. This concept enables the sharing of data between computing machines and objects of day-to-day. One of the areas placed under Internet of Things are the Vehicular Networks. However, the information generated individually for a vehicle has no large amount and does not contribute to an improvement in transit, once information has been isolated. This proposal presents the Infostructure, a system that has to facilitate the efforts and reduce costs for development of applications context-aware to high-level semantic for the scenario of Internet of Things, which allows you to manage, store and combine the data in order to generate broader context. To this end we present a reference architecture, which aims to show the major components of the Infostructure. Soon after a prototype is presented which is used to validate our work reaches the level of contextualization desired high level semantic as well as a performance evaluation, which aims to evaluate the behavior of the subsystem responsible for managing contextual information on a large amount of data. After statistical analysis is performed with the results obtained in the evaluation. Finally, the conclusions of the work and some problems such as no assurance as to the integrity of the sensory data coming Infostructure, and future work that takes into account the implementation of other modules so that we can conduct tests in real environments are presented.

Tomada de decisão individual e aprendizado em Dinoponera quadríceps (Ponerinae, Hymenoptera) forrageando em ambientes dinâmicos

When searching for food, animals often make decisions of where to go, how long to stay in a foraging area and whether or not to return to the last visited spot. These decisions can be enhanced by cognitive traits and adjusted based on previous experience. In social insects such as ants, foraging efficiency have an impact on both individual and colony level. The present study investigated, in the laboratory, the effect of distance from food, capture success and food size, and reward rate on decisions of where to forage in Dinoponera quadriceps, a ponerine ant that forage solitarily and individually make their foraging decisions. We also investigated the influence of learning on the performance of workers over successive trips searching for food by measuring the patch residence time in each foraging trip. Four scenarios were created differing in food reward rates, food size offered and distances colony-food site. Our work has shown that as a rule-of-thumb, workers of D. quadriceps return to the place where a prey item was found on the previous trip, regardless of distance, food size and reward rate. When ants did not capture preys, they were more likely to change path to search for food. However, in one of the scenarios, this decision to switch paths when unsuccessful was less evident, possibly due to the greater variation of possible outcomes ants could experience in this scenario and cognitive constraints of D. quadriceps to predict variations of food distribution. Our results also indicated a learning process of routes of exploration as well as the food site conditions for exploration. After repeated trips, foragers reduced the patch residence time in areas that they did not capture food and quickly changed of foraging area, increasing their foraging efficiency.

Morfometria, variação anual no peso e demografia do Tico-tico-rei-cinza (Lanio pileatus: thraupidae) em dois ambientes de caatinga no nordeste do Brasil

The caatinga is considered the only exclusively Brazilian biome, with a total area of 735.000km². It is estimated that about 59% of this area has already been removed and only 2% are protected in conservations units. The region is characteristic by strong seasonality and heterogeneity in their environments. This paper sets generate information on morphological and population patterns Lanio pilatus in two areas of caatinga of Estação Ecológica do Seridó (ESEC – Seridó), Serra Negra do Norte - RN. Data collection was performed in six phases between July 2012 and December 2014, covering the end of the dry and rainy seasons in the region. The captures were performed with nets and individuals captured were marked with metal rings and measured (weight, wing length, tail, tarsus, culmen and tip of the bill to nostril). Through these measures, we observed that only males of open area range in weight during the dry and rainy season, youngs were significantly lower for all parameters measured, and males were larger than females in three characteristics (weight, wing length and tail) in open area and only one (wing length) in the closed area. The population parameters were generated from the mark-capture-recapture technique by program MARK, using the techniques of robust design and CJS. The survival probability of detection and population estimates varied with time. Only individuals of open area fluctuated in their estimates during the study. Overall, the environment was a great mediator of results which increases the need for more studies on the life history of the species in the region.

Economia criativa e estratégia como prática social: uma abordagem teórico-empírico-conceitual a partir de ambientes criativos de grupos musicais

This study seeks to identify how creative environments of musical groups are configured in the Strategy as Practice perspective as theoretical, empirical and conceptual models. It develops within the theoretical framework, discussions on the context of the Creative Economy, Creative Industries, creative environment, organizational paradigm of Creative Economy, music as a creative environment and business, design and dynamics of Strategy as Practice and conjecture about the contextualism and other epistemological currents. The study is shaped as an exploratory and descriptive research, utilizing the qualitative method and being characterized as a Grounded Theory. A total of four musical groups of different styles, markets and areas of operation with over ten years of activity were surveyed. The Grounded Theory and simple observation methods were used for both data collection and analysis. The software ATLAS.ti. was used to help with the analysis. The research shows that the bands perceive the specialized expertise in the virtual social media as a strategic differentiator. It also shows that the groups nourish individuation and the differentiation in their relationship with the individual. Finally, it validates that these organizations get teams involved and value the dynamic design of their routines in strategic decision making, paying attention to a strategic social bias. Strategy and Creative Practice is the main category that emerged from the data. This category is explained through the three aforementioned results. It shows that organizations that are part of the Creative Economy perform simultaneously and dynamically creative and strategic making at both artistic and managerial levels.The theory created is validated by the principles of degree of coherence, functionality, relevance, flexibility, density and integration, and it is inserted in the contextualism principle, which points the knowledge as related to the context in which it is placed and discussed.

Localização de robôs móveis em ambientes fechados utilizando câmeras montadas no teto

The localization of mobile robots in indoor environments finds lots of problems such as accumulated errors and the constant changes that occur at these places. A technique called global vision intends to localize robots using images acquired by cameras placed in such a way that covers the place where the robots movement takes place. Localization is obtained by marks put on top of the robot. Algorithms applied to the images search for the mark on top of the robot and by finding the mark they are able to get the position and orientation of the robot. Such techniques used to face some difficulties related with the hardware capacity, fact that limited their execution in real time. However, the technological advances of the last years changed that situation and enabling the development and execution of such algorithms in plain capacity. The proposal specified here intends to develop a mobile robot localization system at indoor environments using a technique called global vision to track the robot and acquire the images, all in real time, intending to improve the robot localization process inside the environment. Being a localization method that takes just actual information in its calculations, the robot localization using images fit into the needs of this kind of place. Besides, it enables more accurate results and in real time, what is exactly the museum application needs.

Capacidades estatais para implementação de políticas públicas em ambientes federativos: o caso do Programa Bolsa Família

This thesis aims to understand the extent to which state capacities of state governments explain the effectiveness of the implementation of Programa Bolsa Família (PBF) in the Northeast, adopting the implementation of the theory as the main theoretical lens and more specifically the concept of state capacity. Methodologically is a study of public policy evaluation, and categorized as a process of evaluation study or implementation. Given the specificity of the object is classified as a multi case study research covering the states of Sergipe, Rio Grande do Norte and Bahia. In addition to using secondary data, the study used semi-structured interviews with members of Intersectoral Committees responsible for the actions of PBF and the Cadastro Único at the state level, composed of representatives of the areas of the state government of Social Welfare, Education and Health. the main findings related to technical and administrative capacities and policies were found: infrastructure with weakness in human resources, technological and financial resources; intra-governmental coordination with boundaries between PBF and Unified Social Assistance System , and the actions of conditionality of health and Health Unic System Basic Attention; intergovernmental coordination carried out mostly by the distance limitations of displacement and incipient regional decentralization of actions; based monitoring in the municipalities of lower performance and from the parameters placed by the federal government and political capacities; representative political system is hardly accessed by instances of program management; minor social participation and low articulation with related issues advice to PBF; audit control by any outside agencies. The thesis concludes that depending on the capabilities found implementing weaknesses are not unique to the program's actions, but from the very institutional capacity of the systems in which it operates that are the Unified Social Assistance System, the Health Unic System and the Educational System. In other words limitations of their own state capacities of the state governments and the municipal governments of each territory, such as quantitative insufficiency and qualification of human resources, financial and institutional resources, lack instance promoting decentralization (Intergovernmental and intra-governmental) as well the weakness or absence of a network of local social services are also factors that explain the program management performance and state capabilities of arrangements formed by states and municipalities in the PBF, only to partially deal with the complexity of joints involving Implementation of the program with regard to inter and intra-governmental action.

Capacidades estatais para implementação de políticas públicas em ambientes federativos: o caso do Programa Bolsa Família

This thesis aims to understand the extent to which state capacities of state governments explain the effectiveness of the implementation of Programa Bolsa Família (PBF) in the Northeast, adopting the implementation of the theory as the main theoretical lens and more specifically the concept of state capacity. Methodologically is a study of public policy evaluation, and categorized as a process of evaluation study or implementation. Given the specificity of the object is classified as a multi case study research covering the states of Sergipe, Rio Grande do Norte and Bahia. In addition to using secondary data, the study used semi-structured interviews with members of Intersectoral Committees responsible for the actions of PBF and the Cadastro Único at the state level, composed of representatives of the areas of the state government of Social Welfare, Education and Health. the main findings related to technical and administrative capacities and policies were found: infrastructure with weakness in human resources, technological and financial resources; intra-governmental coordination with boundaries between PBF and Unified Social Assistance System , and the actions of conditionality of health and Health Unic System Basic Attention; intergovernmental coordination carried out mostly by the distance limitations of displacement and incipient regional decentralization of actions; based monitoring in the municipalities of lower performance and from the parameters placed by the federal government and political capacities; representative political system is hardly accessed by instances of program management; minor social participation and low articulation with related issues advice to PBF; audit control by any outside agencies. The thesis concludes that depending on the capabilities found implementing weaknesses are not unique to the program's actions, but from the very institutional capacity of the systems in which it operates that are the Unified Social Assistance System, the Health Unic System and the Educational System. In other words limitations of their own state capacities of the state governments and the municipal governments of each territory, such as quantitative insufficiency and qualification of human resources, financial and institutional resources, lack instance promoting decentralization (Intergovernmental and intra-governmental) as well the weakness or absence of a network of local social services are also factors that explain the program management performance and state capabilities of arrangements formed by states and municipalities in the PBF, only to partially deal with the complexity of joints involving Implementation of the program with regard to inter and intra-governmental action.

Uma plataforma adaptável para localização em ambientes internos

Location systems have become increasingly part of people's lives. For outdoor environments, GPS appears as standard technology, widely disseminated and used. However, people usually spend most of their daily time in indoor environments, such as: hospitals, universities, factories, buildings, etc. In these environments, GPS does not work properly causing an inaccurate positioning. Currently, to perform the location of people or objects in indoor environments no single technology could reproduce for indoors the same result achieved by GPS for outdoors environments. Due to this, it is necessary to consider use of information from multiple sources using diferent technologies. Thus, this work aims to build an Adaptable Platform for Indoor location. Based on this goal, the IndoLoR platform is proposed. This platform aims to allow information reception from diferent sources, data processing, data fusion, data storage and data retrieval for the indoor location context.

Uma plataforma adaptável para localização em ambientes internos

Location systems have become increasingly part of people's lives. For outdoor environments, GPS appears as standard technology, widely disseminated and used. However, people usually spend most of their daily time in indoor environments, such as: hospitals, universities, factories, buildings, etc. In these environments, GPS does not work properly causing an inaccurate positioning. Currently, to perform the location of people or objects in indoor environments no single technology could reproduce for indoors the same result achieved by GPS for outdoors environments. Due to this, it is necessary to consider use of information from multiple sources using diferent technologies. Thus, this work aims to build an Adaptable Platform for Indoor location. Based on this goal, the IndoLoR platform is proposed. This platform aims to allow information reception from diferent sources, data processing, data fusion, data storage and data retrieval for the indoor location context.

Estudo do usuário com deficiência visual: um importante instrumento sócio-inclusivo de pesquisa e formação para o profissional de biblioteconomia perante as necessidades informacionais de pessoas com deficiência

SANTOS, Christiane Gomes; ALMEIDA, Edson Marques. Estudo do usuário com deficiência visual: um importante instrumento sócio-inclusivo de pesquisa e formação para o profissional de biblioteconomia perante as necessidades informacionais de pessoas com deficiência. In: SEMINÁRIO DE PESQUISA DO CCSA, 16., 2010, Rio Grande do Norte. Anais eletrônicos... Natal: UFRN, 2010. Disponível em: