Tânia Rocha

Melhoramento do Cafeeiro: XXI - Comportamento regional de variedades. Linhagens e progênies de café ao sol e à sombra

Plantaram-se em fins de 1945, nas estacoes experimentais do Instituto Agronomico localizadas em Campinas, Ribeirao Preto e Pindorama e, em principios de 1947 em Mococa e Jau, ensaios compreendendo progenies, linhagens e variedades de cafeeiros selecionados a fim de estudar a sua reacao em ambiente ensolarado e a sombra de ingazeiros. Numerosas anotacoes foram realizadas referentes as re-plantas, desenvolvimento dos cafeeiros, produtividade, rendimento e caracteristicas dos frutos e das sementes. Durante os primeiros anos de desenvolvimento, as replantas feitas mostraram-se mais frequentes em Ribeirao Preto e Pindorama e, ao dar por encerrada a primeira fase deste ensaio, em 1956, o maior numero de falhas foi observado em Jau e, o menor, em Campinas. Nas repeticoes sombreadas destes ensaios, as falhas mostraram-se mais frequentes. As progenies ou linhagens de Sumatra, Laurina e Caturra e as derivadas do Bourbon Vermelho C 44 foram as que deram os mais elevados numeros de falhas. Apenas em Ribeirao Preto os cafeeiros mostraram sensivel diminuicao na altura, tomada como indice do desenvolvimento vegetativo, no ambiente sombreado, sendo pequenas as diferencas nas demais localidades. No que se refere a producao total de cafe cereja de todos os intens nos anos considerados, os dados obtidos indicaram sempre maior producao no lote ao sol, em comparacao corn a do sombreado. Em Campinas, a producao tias repeticoes ao sol foi de 82% maior; em Pindorama, 349% em Ribeirao Preto, 1271%; em Mococa. 69% e, em Jau, 305% mais elevadas, tornando desaconselhavel a pratica do sombreamento nas localidades estudadas. Diferencas no numero de talhas, na luminosidade e na agua disponivel no solo, devem ser os principais responsaveis pelas producoes mais elevadas ao sol. No que se refere ao comportamento dos cafeeiros nos dois ambientes, notou-se que os mais produtivos ao sol, tambem alcancam as primeiras colocacoes no lote sombreado, indicando (pie a selecao feita ao sol deve ser eficiente tambem para o plantio a sombra do ingazeiro. Em comparacao com a testemunha HourUon Vermelho LC 370, dez dos itens do ensaio de Campinas, dois de Pindorama, seis de Ribeirao Preto, tres de Mococa e dois de Jau, deram producoes significativamente maiores no lote ao sol. No lote a sombra os itens melhores do que o testemunha foram em numero de dois em Campinas, cinco em Pindorama, sete em Ribeirao Preto, dois em Mococa e um em Jau. Revelaram-se de particular interesse, pela elevada producao, as progenies de Bourbon Amarelo incluidas em ensaios de Mococa e Jau, confirmando resultados obtidos em outros ensaios sobre a produtividade do Bourbon Amarelo. Se nao tivessem surgido as linhagens de Mundo Novo e outras de liourboii Amarelo, Oses ensaios teriam fornecido informacoes sobre as melhores linhagens a serem plantadas em cada regiao agricola. Quanto a variacao anual de producao cm Campinas e Mo;oca, nao se observaram diferencas significativas nos lotes ao sol e sombreado, enquanto em Pindorama e Jau, as variâncias de producao nas repeticoes ao sol mostraram-se pouco maiores, o que talvez esteja relacionado com a producao, bem maior ao sol, nessas localidades. Em Ribeirao Preto a discrepância de producao foi muito elevada, nao permitindo esta comparacao. As observacoes feitas sobre as producoes nos periodos de 2, 4, 6 e K anos, mostraram que os itens mais produtivos, tanto ao sol como nas repeticoes a sombra, revelaram-se logo depois das quatro primeiras producoes. Notou-se que alguns cafeeiros sao precoces quanto a producao, como o Caturra o a linhagem de liourbon Vermelho LC 43, e outros mais tardios, como os de liourbon Amarelo em Mococa e Jau, as linhagens LC 408 em Campinas, e as de liourbon Vermelho C 376-1, C 662 e LC 493 cm varias localidades. Embora tenham sido verificadas setisivei-, diferencas no rendimento das progenies, linhagens e variedades, observou-se que estes sao um pouco melhores a sombra. As porcentagens de frutil icacao foram mais elevadas nas repeticoes a sombra em Campinas, Mococa e Jau e, menores, em Ribeirao Preto e Pindorama, embora a producao tenha se revelado menor. E de se salientar que o Laurina, com a mais elevada porcentagem de frutificacao, apresentou tambem uma das mais reduzidas producoes. O peso medio de cereja foi pouco influenciado pelo plantio a sombra, cm relacao ao sol, enquanto o peso medio das sementes se mostrou pouco maior no lote sombreado, indicando menor peso do pericarpo, o que confirma os dados sobre os valores do rendimento. Quanto as proporcoes dos tipos de sementes moca, concha e chato, pouca variacao foi notada no lote ao sol e a sombra, o mesmo ocorrendo com a quantidade de sementes chochas e tamanho da semente, revelado pela peneira media, e sua densidade. Os dados obtidos sobre a incidencia de broca, em Campinas, mostraram que, a sombra, a infestacao e maior. Observacoes realizadas sobre a maturacao dos frutos, levaram a conclusao de que a partir de flores abertas na mesma epoca, nao ocorrem diferencas na maturacao nas progenies plantadas ao sol e a sombra. Tomando-se ao acaso, amostras de frutos resultantes de flores abertas nas varias epocas, verifica-se um pequeno atraso de maturacao nas repeticoes e sombra, indicando possiveis diferencas na intensidade do florescimento nos dois ambientes. Quanto a qualidade da bebida, os dados sao de molde a sugerir maior acidez nas amostras colhidas a sombra, nao ocorrendo discrepâncias acentuadas quanto aos demais caracteristicos examinados. Os dados gerais destes ensaios permitem concluir que, a nao ser pela drastica reducao na produtividade dos cafezais, os demais fatores estudados nao se mostraram particularmente afetados pelas diferencas do ambiente ao sol e a sombra. Tambem permitem afirmar, de um modo geral, que as progenies e linhagens reagiram, de maneira semelhante ao sol e a sombra, no sentido de que as mais promissoras ao sol tambem tendem a dar boa producao a sombra.

Supporting Accessibility in Higher Education Information Systems: A 2016 Update

Higher Education Institutions (HEIs) have come a long way on the usage of Information Systems (IS) at the several phases of the execution of their business plan. These organizations are very peculiar in the sense that most of the IS technologies have been developed as a consequence of the research work of the HEIs, positioning them as creators and as consumers of IS technologies. In fact, a considerable part of the IS products, currently available for the education sector, was initially created in a HEI as an in-house development. For these reason, the adoption of IS technologies by HEIs has followed two distinct paths: the in-house creation, previously described; and a current market adoption, similarly to most other companies IS adoption.

How Ill Is Online Health Care? An Overview on the Iberia Peninsula Health Care Institutions Websites Accessibility Levels

The current urge on using Internet for both social and professional tasks, alongside with the existence of over 80 million European citizens with some sort of disability as led to the need for an accessible Web [1]. Given, the also increasing thrive for searching the web for health related information and the assumption of heath care institutions as the creators of this type of information, a research study was developed in order to evaluate the accessibility levels of the Iberian health care institutions. From this study, that used ACESSWEB as the evaluation platform, it was possible to perceive that none of the evaluated websites was WCAG 2.0 compliant and that, despite the poor results, Spanish websites presented more accessibility concerns than the Portuguese. Hence, the situation is critical and a significant effort must be done in order to allow citizens with disabilities to have access to the much needed health related information.

Web accessibility challenges and perspectives: A systematic literature review

With this paper we intend to present a systematic literature review on Web accessibility. During this research project, 782 papers were identified and by following a set of inclusion criteria, 38 stood out and were extensively analyzed. On this context we approach a set of Web accessibility critical issues, such as: guidelines, standards and regulations; mobile accessibility; organizations and user perspectives on the topic. During the full scope of this document we adopt a positive position, always focused on presenting solutions to ensure websites accessibility.

Performing universal tasks on the Web: interaction with digital content by people with intellectual disabilities

With this study we intent to better understand how a group with intellectual disabilities interacts with digital content, namely web content, when performing equivalent tasks from their daily school activities, such as: painting, making puzzles, playing games. To accomplish this we observed how a group with intellectual disabilities, without experience using computers, performed universal tasks (selection, manipulation and navigation) when presented with different activities on the Web such as painting, playing games or searching. We aimed at evaluating usability and accessibility and for this we registered the following variables: successful conclusion of activities, type of difficulties found, errors, satisfaction, motivation and autonomy indicators. Participants showed motivation and learning skills when performing all the three universal tasks (selection, manipulation and navigation) which is confirmed by the number of participants that was able to conclude the activities. Concerning errors, it was observed that despite the large number of errors made by the participants, their motivation lead them to complete the tasks. When handling the input devices the participants had a good performance using the computer mouse. On the other hand, they could not use the keyboard alone because of their reading/writing difficulties.

AppVox: An Application to Assist People with Speech Impairments in Their Speech Therapy Sessions

In this study an application to assist people with speech impairments in their speech therapy sessions is presented. AppVox simulates a vocalizer (audio stimulus feature) that can be used to train speech by repeating different words. In this paper, we aim at presenting the application as an assistive technology option and assess if this is a usable option for digital interaction for children with speech impairment. To assess the application we present a case study in which the participants were asked to perform tasks using the AppVox application. The results showed that this group of participants attained a good performance when interacting with the application.

Accessible options for deaf people in e-Learning platforms: technology solutions for sign language translation

Abstract This paper presents a study on potential technology solutions for enhancing the communication process for deaf people on e-learning platforms through translation of Sign Language (SL). Considering SL in its global scope as a spatial-visual language not limited to gestures or hand/forearm movement, but also to other non-dexterity markers such as facial expressions, it is necessary to ascertain whether the existing technology solutions can be effective options for the SL integration on e-learning platforms. Thus, we aim to present a list of potential technology options for the recognition, translation and presentation of SL (and potential problems) through the analysis of assistive technologies, methods and techniques, and ultimately to contribute for the development of the state of the art and ensure digital inclusion of the deaf people in e-learning platforms. The analysis show that some interesting technology solutions are under research and development to be available for digital platforms in general, but yet some critical challenges must solved and an effective integration of these technologies in e-learning platforms in particular is still missing.

Multi-sensory Storytelling to Support Learning for People with Intellectual Disability: An Exploratory Didactic Study☆

Abstract In this paper we present a study about multi-sensory content within the context of learning activities aimed at people with intellectual disability. A story was prepared together with traditional stimulus (audio and visual) and multisensory (audio, video, tactile and smell). Knowing that people with intellectual disability, due to their cognitive limitation, have multiple learning difficulties, namely in areas such as: communication, reading/writing and attention [1] , it is really important to create innovative and pedagogically effective solutions that may motivate them and assist their learning process. Therefore, this study presents Preliminary results showing an overall improvement regarding the participants memory when using the very multi-sensory contents.

Web Accessibility and Digital Businesses: The Potential Economic Value of Portuguese People with Disability

The lack of data in Portugal is a crucial problem for a full characterization and thus a full digital integration for people with disabilities. This is not only a problem of ethic dimension or equal opportunities but have also an economic dimension because excludes a consumer group with economical potential. Hence, this article focuses on the importance of the characterization of people with disabilities in a social, economic and digital perspective. It aims to emphasize their disabilities and ageing evolution, potential value in the digital business and design awareness for inclusion for improve the quality of life of people with disabilities.

Performing universal tasks using a mini iPad: usability assessment per people with intellectual disabilities

With this study we aim at assessing if a mini iPad device is a usable option for digital interaction to perform selection, manipulation, and insertion tasks by people with intellectual disabilities. This study builds on previous studies where usability was evaluated for universal tasks using the keyboard and a mouse input device [1]. This allowed us to assess the usability of a small mini iPad and compare it with other two input devices, namely keyboards and the mouse. For usability assessment we registered the following variables: successful conclusion of activities, type of difficulties found, errors and satisfaction indicators. The results showed that this group was much motivated to learn how to handle with the iPad, several asked to repeat the task and no one quit any task requested. Despite the number of errors as registered in their interaction, they always knew how to overcome the error and never showed frustration or demotivation. Furthermore, they had a good performance (relation between variables: time to conclude the task, number of errors and difficulties felt) with the mini iPad device, however when compared with the keyboard and mouse, their performance increased.