Constru����o do edif��cio B��ltico Center, Parque das Na����es

�� uma inevitabilidade que, mesmo num curso de engenharia, a vertente acad��mica seja preponderante sobre a vertente acad��mica. A evolu����o dos materiais, das tecnologias e da pr��pria constru����o a isso obrigam. No entanto, para se poder perceber os impactes dessa evolu����o, torna-se necess��rio ver in loco a sua aplica����o. Assim, ap��s seis anos de curso, um est��gio numa empresa de constru����o foi o passo que me pareceu mais l��gico e enriquecedor. O facto de ser em obra prop��s-me um desafio extra por ser uma actividade com uma din��mica totalmente diferente da que estava habituado. As 16 semanas de est��gio foram essenciais para adquirir experi��ncia e alguns conhecimentos extremamente ��teis na futura vida profissional. Pretende-se, com este relat��rio, resumir de uma forma simples mas completa, essa experi��ncia, descrevendo, ao longo de quatro cap��tulos, o projecto, as solu����es t��cnicas propostas para resolver alguns problemas encontrados, a viv��ncia de trabalhar numa obra e a sua organiza����o; e, por ��ltimo, uma solu����o de planeamento e gest��o da obra inovadora em Portugal: o Building Information Modelling (B.I.M.).

Study on influence of the new CoDeSys V3.0 on the existing CoDeSys discipline of the Mind8 Engineering Center

CoDeSys "Controller Development Systems" is a development environment for programming in the area of automation controllers. It is an open source solution completely in line with the international industrial standard IEC 61131-3. All five programming languages for application programming as defined in IEC 61131-3 are available in the development environment. These features give professionals greater flexibility with regard to programming and allow control engineers have the ability to program for many different applications in the languages in which they feel most comfortable. Over 200 manufacturers of devices from different industrial sectors offer intelligent automation devices with a CoDeSys programming interface. In 2006, version 3 was released with new updates and tools. One of the great innovations of the new version of CoDeSys is object oriented programming. Object oriented programming (OOP) offers great advantages to the user for example when wanting to reuse existing parts of the application or when working on one application with several developers. For this reuse can be prepared a source code with several well known parts and this is automatically generated where necessary in a project, users can improve then the time/cost/quality management. Until now in version 2 it was necessary to have hardware interface called ���Eni-Server��� to have access to the generated XML code. Another of the novelties of the new version is a tool called Export PLCopenXML. This tool makes it possible to export the open XML code without the need of specific hardware. This type of code has own requisites to be able to comply with the standard described above. With XML code and with the knowledge how it works it is possible to do component-oriented development of machines with modular programming in an easy way. Eplan Engineering Center (EEC) is a software tool developed by Mind8 GmbH & Co. KG that allows configuring and generating automation projects. Therefore it uses modules of PLC code. The EEC already has a library to generate code for CoDeSys version 2. For version 3 and the constant innovation of drivers by manufacturers, it is necessary to implement a new library in this software. Therefore it is important to study the XML export to be then able to design any type of machine. The purpose of this master thesis is to study the new version of the CoDeSys XML taking into account all aspects and impact on the existing CoDeSys V2 models and libraries in the company Harro H��fliger Verpackungsmaschinen GmbH. For achieve this goal a small sample named ���Traffic light��� in CoDeSys version 2 will be done and then, using the tools of the new version it there will be a project with version 3 and also the EEC implementation for the automatically generated code.

Binocular vision and reading ability in a Portuguese population of school age children

Preventable visual loss caused by amblyopia (2 to 4%) and its risk factors such as strabismus (3%) and uncorrected refractive errors (5 to 7%) represent an important public health problem. Children with binocular vision anomalies could be at disadvantage in reading and writing. Objectives: (1) Describe binocular vision measures in children of school age; and (2) Describe the impact of abnormal binocular vision on reading ability (reading errors and reading speed).

Ordenamento do territ��rio na cidade de Lisboa: o caso da Alta de Lisboa

Trabalho Final de Mestrado para obten����o do grau de Mestre em Engenharia Civil na ��rea de Especializa����o de Edifica����es

Rob��tica m��vel: sistema de condu����o aut��noma

Disserta����o para obten����o do grau de Mestre em Engenharia Electrot��cnica Ramo Automa����o e Electr��nica Industrial

The telegraph as an omen of the future in James W. Carey's vision

In the history of modern communication, after the development of the printing press, the telegraph unleashed a revolution in communications. Today, Internet is in many ways its heir. Reflections on the telegraph may open up perspectives concerning tendencies, possibilities and pitfalls of the Internet. The telegraph has been well explored in important literature on communication and media which tends to emphasize the history of this technology, its social context and institutional meaning [e.g. Robert L. Thompson, 1947, Tom Standage, 2007 [1998]. James W. Carey, the North- American critical cultural studies' mentor, in his essay "Technology and Ideology. The Case of the Telegraph" (2009 [1983]), suggests a distinctive approach. In the telegraph, Carey sees the prototype of many subsequent commercial empires based on science and technology, a pioneer model for complex business management; an example of interest struggle for the patents control; an inductor of changes both in language and in structures of knowledge; and a promoter of a futurist and utopian thought of information technologies. Having in mind a revolution in communications promoted by the Internet, this paper revisits this seminal essay to explore its great attainment, as well as the problems of this kind of approach which conceives the innovation of the telegraph as a metaphor for all the innovations announcing the modern stage of history and determining still today the major lines of development in modern communication systems.

Asthenopic symptoms and binocular vision of professional users of optical microscope

Desde 1935 que tem sido demonstrada a rela����o entre a execu����o de um trabalho de perto prolongado e o aparecimento de queixas visuais asten��picas. Anomalias da VB encontram-se significativamente aumentadas ao fim de um dia de trabalho com fixa����o de perto. Diminui����o significativa da amplitude de acomoda����o e converg��ncia depois de quatro dias a realizar uma atividade de perto. Objectivo geral: avaliar o estado da vis��o binocular dos profissionais de Anatomia Patol��gica utilizadores de microsc��pio ��tico. Objectivos espec��ficos: identificar as queixas asten��picas mais frequentes dos profissionais durante o trabalho com o microsc��pio ��tico; comparar o estado da VB no in��cio e no final de uma semana de trabalho; correlacionar o estado da VB com as queixas asten��picas sentidas pelos profissionais; correlacionar as queixas asten��picas com as horas e o n��mero de anos de trabalho com o microsc��pio.