A construção compartilhada da satisfação: um estudo de caso sobre o Fiat Mio

Esta pesquisa teve como objetivo identificar e analisar a forma como a Fiat construiu compartilhadamente uma noção de satisfação com os seus consumidores através do site Fiatmio.cc, um ambiente virtual em que usuários da internet foram convidados a dar sugestões para criação de um carro protótipo do futuro. Foram analisados os conteúdos das transcrições de 16 vídeos de especialistas, exibidos no site, e de 98 comentários postados por usuários, a respeito de discussões levantadas pela Fiat. O trabalho aponta e compara os principais conceitos presentes nas mensagens divulgadas pela montadora e nos comentários dos usuários; identifica a forma como ocorreu essa interação discursiva; e analisa a forma como a empresa construiu o seu posicionamento neste projeto e a noção de satisfação desses consumidores.

Uma abordagem comportamental para inserção de robôs em ambientes culturais

In this work, we propose methodologies and computer tools to insert robots in cultural environments. The basic idea is to have a robot in a real context (a cultural space) that can represent an user connected to the system through Internet (visitor avatar in the real space) and that the robot also have its representation in a Mixed Reality space (robot avatar in the virtual space). In this way, robot and avatar are not simply real and virtual objects. They play a more important role in the scenery, interfering in the process and taking decisions. In order to have this service running, we developed a module composed by a robot, communication tools and ways to provide integration of these with the virtual environment. As welI we implemented a set of behaviors with the purpose of controlling the robot in the real space. We studied available software and hardware tools for the robotics platform used in the experiments, as welI we developed test routines to determine their potentialities. Finally, we studied the behavior-based control model, we planned and implemented alI the necessary behaviors for the robot integration to the real and virtual cultural spaces. Several experiments were conducted, in order to validate the developed methodologies and tools

Educaçãdo matemática na realidade do ciberespaço - Que aspectos ontológicos e científicos se apresentam?

The question that leads this article is What is this virtual space in the on-line mathematics education process? We focus on the question of the real and virtual as issues taken as components of cyberspace. We investigate these notions in the history of philosophy, looking to Granger to find their meaning, to enable us to understand them and fit them into the sphere of Mathematics Education. This theoretical-philosophical article, then, claims that the virtuality of cyberspace is supported by the computer screen, built by the unification of the sciences (mathematics), technology and its applications. Software and the actions taken by Internet users update the capability of these programs in a variety of characteristics and possibilities such as space-time flow interconnections as well as during the mathematics education process.

Ensino, memória e mídias virtuais: os passeios virtuais como possibilidade educacional de resgate da memória de bens culturais sob a ótica de professores de artes do ensino público

Pós-graduação em Educação Escolar - FCLAR

O citar no Twitter: o caso de Clarice Lispector

The phenomenon of the World Wide Web, the Internet, has revolutionized the way we live in a contemporary relevance. The relationships among people have changed since the media also changed: the cyberspace has been established as an important vehicle of communication in which different languages, cultures and peoples coexist. Within the virtual space there are several fica possibilities for communication, interaction, fun, knowledge etc. Everything happens extremely quickly. An interesting example of that are blogs that, to survive virtuality, require constant updating. It has become interesting to notice the factor of personal expressiveness taking a new shape in the context of network, before being seen in elements such as diaries, poetry, artistic production or debate. The chances and, thus, the need to find people to interact and to share interests has taken a gigantic proportion, and, in this way, sources of audiovisual and reading activities are always in vogue, being shared every second. Blogging can be about different subjects, but what is perceived on all blogs is the strong trace of written text is always presented. Twitter has established itself as a microblogging network for the expression of dynamism, information sharing and interaction. Thus, it was interesting to approach the manner language is expressed in these microblogs thinking about the way that literary discourse is constructed when is seen, on quotations, in the context of this social network: Twitter. Being able to attest the great increase on the occurrences of quotes from different literary genres, it was useful to pay attention to this fact. In Brazil, Twitter has thousands of users, fans and readers, that rewrite and quote authors. The number of quotations is so abundant that it has popularized several Brazilian writers, such as: Clarice Lispector and Caio Fernando Abreu; authors that are frequetenly quoted. So, we made usage of semiotic studies of the French line. In...

Flash Mob: da rede à praça

This work explores the flash mobs, which are flash mobilizations arranged by intent that involve a large number of people to do something together in a pre-arranged place. With the advent of 2.0 Internet, the sharing of information and the mobile virtual communication grown up and showed behavior of an individual person to meet for a common interest. Those affective relationships born in the social networks come to the urban space in a real-virtual space junction and the possibilities of that are unexplored yet. Studied by this work, the Y generation is the flash mob most popular public and uses those mobilizations to reinforce their fan identity and appreciation for a media product

Entre o corpo da obra e o corpo do observador

Pós-graduação em Artes - IA

Kidney of Minke Whale (Baleanoptera acutorostrata): Architecture and structure

Sarmento C. A. P., Ferreira A. O., Rodrigues E. A. F., Lesnau G. G., Rici R. E. G., Abreu D. K., Biasi C. & Miglino M. A. 2012. [Kidney of Minke Whale (Baleanoptera acutorostrata): Architecture and structure.] Rins de Baleia Minke (Baleanoptera acutorostrata): arquitetura e estrutura. Pesquisa Veterinaria Brasileira 32(8): 807-811. Departamento de Cirurgia, Setor de Anatomia dos Animais Domesticos e Silvestres, Universidade de Sao Paulo, Av. Prof. Dr. Orlando Marques de Paiva 87, Sao Paulo, SP 05508-270, Brazil. E-mail: sarmento@usp.br Among marine mammals, whale is one of the most attention-arousing animals, especially concerning its urinary tract. This system follows the pattern of mammals with regard to its constitution, however, it differs in renal morphology and number of lobes, which, in turn, form complete reniculi, agglutinated in hundreds. This structure is supported by fibrous connective tissue, but highly capable of maintaining electrolyte balance. Six pairs of kidneys of Minke whale (Balaenoptera acutorostrata), collected in 1982, in Cabedelo, Paraiba, Brazil, in the last fishing allowed, were dissected. These kidneys were preserved in 10% formaldehyde and they presented a very large histologic layer of collagen surrounding the medullary wall. The urinary collecting duct form papillary glasses, that reach a single collecting center which discharges in the ureter. It was found that the kidney of Minke whale has a lobe characteristic, with, on average, 700 reniculi; each reniculus has anatomical and functional characteristics of a unipyramidal kidney, with an inner layer (medulla), and an outer layer (cortex), and independent irrigation, with formation of individually arcuate arteries, as observed in unipyramidal terrestrial mammals. However, the set gathering all these reniculi constitutes, in the end, a multilobular and polipyramidal kidney, contrary to the morphology of most terrestrial mammals. It was not possible to distinguish the renicular cortex structures of the Minke whale in the level of light microscopy. Through scanning electron microscopy, it was possible to visualize a cortical layer located between two fibrous capsules. This joint, in turn, consists of connective tissue, which, along with a layer of collagen and elastic fibers, separates the cortex from the medulla; the kidney glomeruli were visualized, completely taken by the glomerular vessels and arranged into several layers. One notices that the glomerular cavity is almost a virtual space into which the glomerular filtrate is drained, and it does not present a globular shape. Vascularization is increased in the medullary region. The difference between the kidneys of terrestrial and marine mammals consists in the arrangement of morphological components, favoring the organ's physiology.

Differences in Internet Usage - Social Inequality and Informal Education

In the public debate the internet is regarded as a central resource for knowledge and information. Associated with this is the idea that everyone is able and even expected to serve himself or herself according to his or her own needs via this medium. Since more and more services are also delivered online the internet seems to allow its users to enjoy specific advantages in dealing with their everyday life. However, using the internet is based on a range of preconditions. New results of empirical and theoretical research indicate the rise of a social divide in this context. Within the internet, different ways of use can be identified alongside social inequalities. Boundaries of the "real life" are mirrored in the virtual space e.g. in terms of forms of communification and spaces for appropriation. These are not only shaped by invidual preferences but particularly by social structures and processes. In the context of the broader debate on education it is stated that formal educational structures are to be completed by arrangements which are structured in informal respectively nonformal ways. Particularly the internet is suggested to play an important role in this respect. However, the phenomenon of digital inequality points to limitations consolidated by effects of economic, social, and cultural ressources: Economical resources affect opportunities of access, priorities of everyday life shape respective intentions of internet use, social relationships have an impact on the support structures available and ways of appropriation reproduce a specific understanding of informal education ("informelle Bildung"). This produces an early stratification of opportunities especially for the subsequent generation and may lead to extensive inequalities regarding the distribution of advantages in terms of education. Thus the capacity of the virtual space in terms of participatory opportunities and democratic potentials raises concerns of major relevance with respect to social and educational policy. From the perspective of different disciplines involved in these issues it is essential to clarify this question in an empirical as well as in a theoretical way and to make it utilizable for a future-orientied practice. This article discusses central questions regarding young people's internet use and its implications for informal education and social service delivery on the basis of empirical findings. It introduces a methodological approach for this particular perspective and illustrates that the phenomena of digital divide and digital inequality are as much created by social processes as by technical issues.

Efficient Bimanual Symmetric 3D Manipulation for Bare-Handed Interaction

Recently, stable markerless 6 DOF video based handtracking devices became available. These devices simultaneously track the positions and orientations of both user hands in different postures with at least 25 frames per second. Such hand-tracking allows for using the human hands as natural input devices. However, the absence of physical buttons for performing click actions and state changes poses severe challenges in designing an efficient and easy to use 3D interface on top of such a device. In particular, for coupling and decoupling a virtual object’s movements to the user’s hand (i.e. grabbing and releasing) a solution has to be found. In this paper, we introduce a novel technique for efficient two-handed grabbing and releasing objects and intuitively manipulating them in the virtual space. This technique is integrated in a novel 3D interface for virtual manipulations. A user experiment shows the superior applicability of this new technique. Last but not least, we describe how this technique can be exploited in practice to improve interaction by integrating it with RTT DeltaGen, a professional CAD/CAS visualization and editing tool.

Hands-Free Navigation in Immersive Environments for the Evaluation of the Effectiveness of Indoor Navigation Systems

While navigation systems for cars are in widespread use, only recently, indoor navigation systems based on smartphone apps became technically feasible. Hence tools in order to plan and evaluate particular designs of information provision are needed. Since tests in real infrastructures are costly and environmental conditions cannot be held constant, one must resort to virtual infrastructures. This paper presents the development of an environment for the support of the design of indoor navigation systems whose center piece consists in a hands-free navigation method using the Microsoft Kinect in the four-sided Definitely Affordable Virtual Environment (DAVE). Navigation controls using the user's gestures and postures as the input to the controls are designed and implemented. The installation of expensive and bulky hardware like treadmills is avoided while still giving the user a good impression of the distance she has traveled in virtual space. An advantage in comparison to approaches using a head mounted display is that the DAVE allows the users to interact with their smartphone. Thus the effects of different indoor navigation systems can be evaluated already in the planning phase using the resulting system

Jóvenes y blogs : Construcciones de sentido en torno a la delgadez

La presente investigación indaga los sentidos construidos por jóvenes que producen blogs PRO ANA en castellano, en torno a la delgadez como un estilo de vida a seguir. Desde los estudios de comunicación/cultura, y a partir de una perspectiva y un análisis socioculturales, se realiza un recorrido por diferentes blogs en donde se encuentran modos de comunicarse: ayunos, credos, la determinación de mandamientos y la firma de contratos, entre otras estrategias analizadas para sostener el estilo de vida. Así mismo, se problematiza a partir de le exploración a quién/es están explícitamente dirigidas estas plataformas identitarias. Enmarcados en las condiciones sociales e históricas del mundo que transitan, los jóvenes son foco de discursos que estigmatizan sus prácticas cotidianas. Sus decisiones son puestas en cuestión cuando desean alcanzar la delgadez a través de restringir su alimentación y, a su vez, darlo a conocer en el espacio virtual. La intención de este estudio no fue la de formular una definición, sino comprender procesos de significación y producción de sentido desde una dimensión cultural que dé cuenta de la vida social de jóvenes ubicados material y simbólicamente en el espacio social actual. En la investigación se realiza, además, un posicionamiento conceptual sobre la juventud, el consumo y la relación que se establece entre jóvenes, consumo y cuerpos delgados, así como un recorrido por las investigaciones que han servido de insumo para la problematización de la tesis

Jóvenes y blogs : Construcciones de sentido en torno a la delgadez

La presente investigación indaga los sentidos construidos por jóvenes que producen blogs PRO ANA en castellano, en torno a la delgadez como un estilo de vida a seguir. Desde los estudios de comunicación/cultura, y a partir de una perspectiva y un análisis socioculturales, se realiza un recorrido por diferentes blogs en donde se encuentran modos de comunicarse: ayunos, credos, la determinación de mandamientos y la firma de contratos, entre otras estrategias analizadas para sostener el estilo de vida. Así mismo, se problematiza a partir de le exploración a quién/es están explícitamente dirigidas estas plataformas identitarias. Enmarcados en las condiciones sociales e históricas del mundo que transitan, los jóvenes son foco de discursos que estigmatizan sus prácticas cotidianas. Sus decisiones son puestas en cuestión cuando desean alcanzar la delgadez a través de restringir su alimentación y, a su vez, darlo a conocer en el espacio virtual. La intención de este estudio no fue la de formular una definición, sino comprender procesos de significación y producción de sentido desde una dimensión cultural que dé cuenta de la vida social de jóvenes ubicados material y simbólicamente en el espacio social actual. En la investigación se realiza, además, un posicionamiento conceptual sobre la juventud, el consumo y la relación que se establece entre jóvenes, consumo y cuerpos delgados, así como un recorrido por las investigaciones que han servido de insumo para la problematización de la tesis

Jóvenes y blogs : Construcciones de sentido en torno a la delgadez

La presente investigación indaga los sentidos construidos por jóvenes que producen blogs PRO ANA en castellano, en torno a la delgadez como un estilo de vida a seguir. Desde los estudios de comunicación/cultura, y a partir de una perspectiva y un análisis socioculturales, se realiza un recorrido por diferentes blogs en donde se encuentran modos de comunicarse: ayunos, credos, la determinación de mandamientos y la firma de contratos, entre otras estrategias analizadas para sostener el estilo de vida. Así mismo, se problematiza a partir de le exploración a quién/es están explícitamente dirigidas estas plataformas identitarias. Enmarcados en las condiciones sociales e históricas del mundo que transitan, los jóvenes son foco de discursos que estigmatizan sus prácticas cotidianas. Sus decisiones son puestas en cuestión cuando desean alcanzar la delgadez a través de restringir su alimentación y, a su vez, darlo a conocer en el espacio virtual. La intención de este estudio no fue la de formular una definición, sino comprender procesos de significación y producción de sentido desde una dimensión cultural que dé cuenta de la vida social de jóvenes ubicados material y simbólicamente en el espacio social actual. En la investigación se realiza, además, un posicionamiento conceptual sobre la juventud, el consumo y la relación que se establece entre jóvenes, consumo y cuerpos delgados, así como un recorrido por las investigaciones que han servido de insumo para la problematización de la tesis

PWM Control of a Buck Converter with an Amorphous Core Coil

Pulse-width modulation is widely used to control electronic converters. One of the most topologies used for high DC voltage/low DC voltage conversion is the Buck converter. It is obtained as a second order system with a LC filter between the switching subsystem and the load. The use of a coil with an amorphous magnetic material core instead of air core lets design converters with smaller size. If high switching frequencies are used for obtaining high quality voltage output, the value of the auto inductance L is reduced throughout the time. Then, robust controllers are needed if the accuracy of the converter response must not be affected by auto inductance and load variations. This paper presents a robust controller for a Buck converter based on a state space feedback control system combined with an additional virtual space variable which minimizes the effects of the inductance and load variations when a not-toohigh switching frequency is applied. The system exhibits a null steady-state average error response for the entire range of parameter variations. Simulation results are presented.