Plane-to-plane positioning from image-based visual servoing and structured light

In this paper we face the problem of positioning a camera attached to the end-effector of a robotic manipulator so that it gets parallel to a planar object. Such problem has been treated for a long time in visual servoing. Our approach is based on linking to the camera several laser pointers so that its configuration is aimed to produce a suitable set of visual features. The aim of using structured light is not only for easing the image processing and to allow low-textured objects to be treated, but also for producing a control scheme with nice properties like decoupling, stability, well conditioning and good camera trajectory

Student's watcher : comparison between ASP.NET and PHP+CSS

"Student’s Watcher” is a small Web application which wants to show in a visual, simple and fast way, the evolution of the students. The main project table displays such things as marks and comments about students. We can add a comment for each mark to explain why this mark. The objective is to be able to know if some student has a problem, how is going his year, marks in other courses, or even, to know if he has a bad week in a different subjects. We can see the evolution of students in past years to do an objective comparison. It also allows inserting global comments of student, we have a list of these, and all professors can add new ones, where we can see more general valuations. “Student’s Watcher” was begun in ASP.net, but finally my project would be developed in PHP, HTML and CSS. This project wants to be a comparison between two of most important languages used nowadays, ASPX and PHP

Intraocular Straylight And Contrast Sensitivity Two Months After Lasik: Intraocular Straylight Measurement As A New Parameter In Visual Quality Assessment

PROPÒSIT: Estudiar l'efecte de la cirurgia LASIK en la llum dispersa i la sensibilitat al contrast. MÈTODES: Vint-i-vuit pacients van ser tractats amb LASIK. La qualitat visual es va avaluar abans de l'operació i dos mesos després. RESULTATS: La mitjana de llum dispersa i la sensibilitat al contrast abans de l'operació no va canviar en dos mesos després. Només un ull tenia un marcat augment en la llum dispersa. Nou ulls van presentar una lleugera disminució en la sensibilitat al contrast. S'han trobat dues complicacions. CONCLUSIÓ: Després de LASIK la majoria dels pacients (80%) no van tenir complicacions i van mantenir la seva qualitat visual. Uns pocs pacients (16%) van tenir una mica de qualitat visual disminuïda. Molt pocs (4%) van tenir complicacions clíniques amb disminució en la qualitat visual.

Telehealth system (e-CUIDATE) to improve quality of life in breast cancer survivors: rationale and study protocol for a randomized clinical trial.

BACKGROUND Breast cancer survivors suffer physical impairment after oncology treatment. This impairment reduces quality of life (QoL) and increase the prevalence of handicaps associated to unhealthy lifestyle (for example, decreased aerobic capacity and strength, weight gain, and fatigue). Recent work has shown that exercise adapted to individual characteristics of patients is related to improved overall and disease-free survival. Nowadays, technological support using telerehabilitation systems is a promising strategy with great advantage of a quick and efficient contact with the health professional. It is not known the role of telerehabilitation through therapeutic exercise as a support tool to implement an active lifestyle which has been shown as an effective resource to improve fitness and reduce musculoskeletal disorders of these women. METHODS / DESIGN This study will use a two-arm, assessor blinded, parallel randomized controlled trial design. People will be eligible if: their diagnosis is of stages I, II, or IIIA breast cancer; they are without chronic disease or orthopedic issues that would interfere with ability to participate in a physical activity program; they had access to the Internet and basic knowledge of computer use or living with a relative who has this knowledge; they had completed adjuvant therapy except for hormone therapy and not have a history of cancer recurrence; and they have an interest in improving lifestyle. Participants will be randomized into e-CUIDATE or usual care groups. E-CUIDATE give participants access to a range of contents: planning exercise arranged in series with breathing exercises, mobility, strength, and stretching. All of these exercises will be assigned to women in the telerehabilitation group according to perceived needs. The control group will be asked to maintain their usual routine. Study endpoints will be assessed after 8 weeks (immediate effects) and after 6 months. The primary outcome will be QoL measured by The European Organization for Research and Treatment of Cancer Quality of Life Questionnaire Core 30 version 3.0 and breast module called The European Organization for Research and Treatment of Cancer Breast Cancer-Specific Quality of Life questionnaire. The secondary outcomes: pain (algometry, Visual Analogue Scale, Brief Pain Inventory short form); body composition; physical measurement (abdominal test, handgrip strength, back muscle strength, and multiple sit-to-stand test); cardiorespiratory fitness (International Fitness Scale, 6-minute walk test, International Physical Activity Questionnaire-Short Form); fatigue (Piper Fatigue Scale and Borg Fatigue Scale); anxiety and depression (Hospital Anxiety and Depression Scale); cognitive function (Trail Making Test and Auditory Consonant Trigram); accelerometry; lymphedema; and anthropometric perimeters. DISCUSSION This study investigates the feasibility and effectiveness of a telerehabilitation system during adjuvant treatment of patients with breast cancer. If this treatment option is effective, telehealth systems could offer a choice of supportive care to cancer patients during the survivorship phase. TRIAL REGISTRATION ClinicalTrials.gov Identifier: NCT01801527.

A Sustainable Development Strategy for the Pyrenees-Mediterranean Euroregion: Basic Guidelines

L'estudi presenta té per objecte formular els requisits necessaris per posar en marxa una estratègia per al desenvolupament sostenible de l'Euroregió Pirineus-Mediterrània. Aquest és un projecte de cooperació transfronterera regional promogut per l'expresident de la Generalitat, Honorable Sr Pasqual Maragall, que, a més de Catalunya, inclou Aragó, Illes Balears, Llenguadoc-Rosselló i Migdia-Pirineus. A la Unió Europea hi ha més de 70 euroregions, que han estat en funcionant per diferents periodes de temps, després d'haver estat creat per regions o entitats locals, o ambdós

Visual management of sags and incidents gathered in distribution substations for power quality management

Monitor a distribution network implies working with a huge amount of data coining from the different elements that interact in the network. This paper presents a visualization tool that simplifies the task of searching the database for useful information applicable to fault management or preventive maintenance of the network

Comparison of early cortical networks in efficient and inefficient visual search: an event-related potential study.

Functional magnetic resonance imaging studies have indicated that efficient feature search (FS) and inefficient conjunction search (CS) activate partially distinct frontoparietal cortical networks. However, it remains a matter of debate whether the differences in these networks reflect differences in the early processing during FS and CS. In addition, the relationship between the differences in the networks and spatial shifts of attention also remains unknown. We examined these issues by applying a spatio-temporal analysis method to high-resolution visual event-related potentials (ERPs) and investigated how spatio-temporal activation patterns differ for FS and CS tasks. Within the first 450 msec after stimulus onset, scalp potential distributions (ERP maps) revealed 7 different electric field configurations for each search task. Configuration changes occurred simultaneously in the two tasks, suggesting that contributing processes were not significantly delayed in one task compared to the other. Despite this high spatial and temporal correlation, two ERP maps (120-190 and 250-300 msec) differed between the FS and CS. Lateralized distributions were observed only in the ERP map at 250-300 msec for the FS. This distribution corresponds to that previously described as the N2pc component (a negativity in the time range of the N2 complex over posterior electrodes of the hemisphere contralateral to the target hemifield), which has been associated with the focusing of attention onto potential target items in the search display. Thus, our results indicate that the cortical networks involved in feature and conjunction searching partially differ as early as 120 msec after stimulus onset and that the differences between the networks employed during the early stages of FS and CS are not necessarily caused by spatial attention shifts.

Evaluation of free libraries for visual recognition of art imagery on mobile devices

This paper describes a systematic research about free software solutions and techniques for art imagery computer recognition problem.

Auditory-visual multisensory interactions in humans: timing, topography, directionality, and sources.

Current models of brain organization include multisensory interactions at early processing stages and within low-level, including primary, cortices. Embracing this model with regard to auditory-visual (AV) interactions in humans remains problematic. Controversy surrounds the application of an additive model to the analysis of event-related potentials (ERPs), and conventional ERP analysis methods have yielded discordant latencies of effects and permitted limited neurophysiologic interpretability. While hemodynamic imaging and transcranial magnetic stimulation studies provide general support for the above model, the precise timing, superadditive/subadditive directionality, topographic stability, and sources remain unresolved. We recorded ERPs in humans to attended, but task-irrelevant stimuli that did not require an overt motor response, thereby circumventing paradigmatic caveats. We applied novel ERP signal analysis methods to provide details concerning the likely bases of AV interactions. First, nonlinear interactions occur at 60-95 ms after stimulus and are the consequence of topographic, rather than pure strength, modulations in the ERP. AV stimuli engage distinct configurations of intracranial generators, rather than simply modulating the amplitude of unisensory responses. Second, source estimations (and statistical analyses thereof) identified primary visual, primary auditory, and posterior superior temporal regions as mediating these effects. Finally, scalar values of current densities in all of these regions exhibited functionally coupled, subadditive nonlinear effects, a pattern increasingly consistent with the mounting evidence in nonhuman primates. In these ways, we demonstrate how neurophysiologic bases of multisensory interactions can be noninvasively identified in humans, allowing for a synthesis across imaging methods on the one hand and species on the other.

An analysis of visual adaptation and contrast perception for tone mapping

Tone Mapping is the problem of compressing the range of a High-Dynamic Range image so that it can be displayed in a Low-Dynamic Range screen, without losing or introducing novel details: The final image should produce in the observer a sensation as close as possible to the perception produced by the real-world scene. We propose a tone mapping operator with two stages. The first stage is a global method that implements visual adaptation, based on experiments on human perception, in particular we point out the importance of cone saturation. The second stage performs local contrast enhancement, based on a variational model inspired by color vision phenomenology. We evaluate this method with a metric validated by psychophysical experiments and, in terms of this metric, our method compares very well with the state of the art.

A multicase study for the evaluation of a pattern-based visual design process for collaborative learning

Collage is a pattern-based visual design authoring tool for the creation of collaborative learning scripts computationally modelled with IMS Learning Design (LD). The pattern-based visual approach aims to provide teachers with design ideas that are based on broadly accepted practices. Besides, it seeks hiding the LD notation so that teachers can easily create their own designs. The use of visual representations supports both the understanding of the design ideas and the usability of the authoring tool. This paper presents a multicase study comprising three different cases that evaluate the approach from different perspectives. The first case includes workshops where teachers use Collage. A second case implies the design of a scenario proposed by a third-party using related approaches. The third case analyzes a situation where students follow a design created with Collage. The cross-case analysis provides a global understanding of the possibilities and limitations of the pattern-based visual design approach.

Competències i factors clau per a l’èxit educatiu des de la perspectiva dels estudiants universitaris fills/es dels immigrants

L’estudi realitzat ha abordat quines són les competències i els factors clau que estudiants universitaris d’origen immigrant consideren que han estat claus per arribar a la universitat, assolint així l’èxit educatiu. S’han escollit estudiants que haguessin fet l’escolaritat obligatòria total o parcialment a Catalunya.Per dur a terme la recerca s’ha treballat amb relats de vida (un total de 13 escrits) i narracions audiovisuals (amb un total de 4 produccions), essent finalment 17 les evidències vàlides. Finalment, s’ha elaborat, administrat i processat un qüestionari d’opinió que s’ha remès a 2472 estudiants de la Universitat de Barcelona, dels quals hem aconseguit 128 respostes considerades vàlides. Els relats s’han analitzat amb un procediment inductiu, procedint a una lectura exhaustiva de les paraules dels participants i anant identificant quines són les competències i els factors clau que ells consideraven que els havien ajudat a arribar a la universitat o que, tot i no ser ells conscients, nosaltres identificàvem com a tals. Pel que fa a les narracions audiovisuals, es va dur a terme una anàlisi tant del contingut, tenint com a referència els resultats obtinguts als relats escrits, com d’aspectes més tècnics, centrats en la imatge i el so. Per acabar, els qüestionaris s’han analitzat a partir de processos bàsics d’estadística descriptiva. Pel que fa als resultats obtinguts, respecte a l’eix de competències, la més destacada és la d’autonomia i iniciativa personals, lligada a la responsabilitat i autoexigència. Respecte a l’eix d’èxit educatiu, destaca el paper del professorat, tant pel suport que els ofereixen com per les expectatives que dipositen en ells. I, per acabar, respecte a l’eix d’inclusió social, els aspectes que l’afavoreixen es centren sobretot en el recolzament de la família, en l’entorn més immediat i en el fet d’entendre la possibilitat de viure amb altres cultures com un enriquiment.

Design Gráfico na Construção da Identidade visual da Marca Turística em City Branding.

Esta dissertação apresenta um estudo sobre a participação de Design Gráfico no projeto de identidade visual das marcas turísticas de cidades. O foco recai sobre a coerência da visualidade gráfica da marca com relação ao posicionamento socioeconômico e cultural das cidades, como instâncias de empreendimentos turísticos. O estudo do posicionamento das marcas de cidades foi baseado no livro Competitive Identity (ANHOLT, 2007), também, em Anholt city branding index (2006) e nas atualizações parciais desse índice (ANHOLT, 2009 e 2011). Além disso, as marcas gráficas de 30 cidades e os respectivos dados sobre seu posicionamento, como empreendimentos turísticos, foram coletadas em websites oficiais das cidades na internet. Tendo como base essas 30 cidades com um a marca gráfica turística da cidade, foi proposta uma classificação visual dessas baseando-se em três principais categorias: Categorização conceitual; a Categorização cinéticosensorial; Categorização visual. Com base nessas informações e na classificação da visualidade das marcas gráficas pesquisadas, foi realizado um estudo comparado, visando estabelecer coerências entre a comunicação visual da marca gráfica e o posicionamento socioeconômico e cultural das cidades turísticas. Diante disso, apresentam-se em destaque as marcas das cidades São Paulo e Melbourne, como um exemplo nacional e outro internacional da criatividade gráfica aplicada e da coerência entre o posicionamento do empreendimento turístico e a identidade visual da marca

Auto-conceito, Auto-estima e Aprendizagem em crianças e Adolescentes Portadores de Deficiência Visual. A perspectiva dos seus professores.

O presente trabalho monográfico enquadra-se no plano curricular, constituindo um dos requisitos para a obtenção de licenciatura em psicologia, variante de Educação e Desenvolvimento, pela Universidade Jean Piaget de Cabo Verde. Este trabalho intitula-se “Auto conceito Auto estima e aprendizagem das crianças e adolescentes portadores de deficiência visual e as perspectivas dos seus professores”.Procura-se com este trabalho, conhecer o auto conceito e a auto estima das crianças portadoras da deficiência visual que frequentam o Centro de ADVIC São Filipe - Praia; verificar a influência da deficiência visual na aprendizagem; averiguar a relação entre auto conceito auto estima com a aprendizagem das crianças e adolescentes na perspectiva dos seus professores.Participaram deste estudo sete alunos (7), sendo cinco (5) do sexo feminino e dois (2) de sexo masculino e seis (6) professores. Para a recolha de dados utilizamos metodologia de natureza qualitativa. A análise dos dados procedeu-se com análise de conteúdo das entrevistas feitos aos alunos o que nos permitiu analisar as cinco (5) dimensões do auto conceito e auto estima global dos alunos, nas entrevistas aos professores analisamos as suas perspectivas em relação a aprendizagem dos alunos portadores de deficiência visual.Os resultados deste estudo revelam que e o auto conceito auto-estima dessas crianças e adolescentes caracteriza-se pela positiva, os seus comportamentos contentes e alegres faz com que muitas das vezes pareçam divertidos. Parece haver influência da deficiência na aprendizagem das crianças e existe relação entre o auto conceito e auto estima e aprendizagem. Constatou-se ainda, que a maneira positiva de encarar, lidar com a sua deficiência facilita a aprendizagem isso segundo as perspectivas dos seus professores.