Espetáculos de Parametrização: Parametrização acústica em espaços de espetáculo

Esta dissertação tenciona refletir e experimentar sobre a integração de métodos de utilização de programas informáticos no processo criativo e analítico do processo arquitetónico, especificamente em espaços destinados a apresentações artísticas ou oratórias. Para atingir esse fim o Anfiteatro Fernando Távora da FAUP surge como um exemplo principal a ter como caso de estudo, pela proximidade à localização da realização do trabalho assim como discussão da comunidade escolar sobre o seu desempenho acústico. A Aula Magna da Reitoria da Universidade de Lisboa, a Sala Suggia da Casa da Música e a sala do Teatro Nacional de São João, são outros exemplos a ser tidos em conta e estudados como forma a melhor compreender as variadas hipóteses de tipologias utilizadas na construção de espaços de espetáculo. A utilização de meios informáticos torna todo este processo mais rápido e eficaz de efetuar, permitindo ainda a criação de opções não existentes, função extremamente valiosa no processo de desenvolvimento de um espaço arquitetónico. Estes meios permitem a criação de modelos tridimensionais digitais de muito fácil manipulação, principalmente quando introduzindo uma componente paramétrica, onde as formas são definidas de acordo com algoritmos nos quais se podem criar um grande número de iterações com uma rapidez formidável. A utilização de programas informáticos permite também a realização de análises acústicas com graus erro muito baixos, processo muito demoroso quando executado em meios físicos sem auxílio do meio digital.This dissertation aims to reflect and experiment on the integration of using methos of informatic programs in the creative and analytical processes of architectural development, specifically in spaces destined to artistical or oratory presentations. For that the Anfiteatro Fernando Távora in FAUP appear as a prime example to use as case study, from the proximity of local to where the work is being developed as well as discussions had by the school community about its acoustical performance. The Aula Magna from Reitoria da Universidade de Lisboa, the Sala Suggia from Casa da Música and the room from Teatro Nacional de São João, are other examples to be considered and studied as a way to better understand the varied hypotheses of typologies used in the construction of show spaces. The use of informatic means makes the whole process faster and more effective, allowing for the creation of non-existing options, an extremely valuable role in the development process of an architectural space. These means allow the making of tridimensional models of very easy manipulation, mainly with the introduction of a parametric constraints, where the shapes are defined by algorithms in which we can create a big number of iterations in a very fast manner. The use of computer programs allows for the execution of acoustical analysis with very narrow margins of error, a process that with be very laborious and slow when executed by physical means without any aid from digital means

A Framework for the Strategic Management of Science & Technology Parks

Science and technology parks (STPs) have been playing an increasingly influential role in the stimulation and growth of the knowledge economy. However, the spread of STPs faces relevant challenges, such as the development of robust performance management systems, able to demonstrate results and indicate improvement opportunities. Thereby, this paper proposes a theoretical model of performance management, which combines premises of the Service-Dominant Logic (S-D Logic), the Balanced Scorecard (BSC) and the General Hierarchical Model (GHM). Based on a multiple-case exploratory and qualitative study, relevant information about the strategic planning and management of these projects were extracted and paved the way for the construction of a performance hierarchical model composed of five perspectives, according to the BSC. Considering the outcomes, it is expected that the proposed model provide useful insights for the consolidation of a framework for the strategic management of science and technology parks

Internal adaptation of cast titanium crowns

As the adaptation of titanium crowns obtained by Rematitan Plus investment, specific for titanium, is not recognized to be suitable, this study evaluated the effect of the concentration of the specific liquid and the temperature of the mold of investments on the internal misfit of crowns cast on commercially pure titanium. Individual dies of epoxy resin were obtained, representing teeth prepared for full-crown restoration with a 6-degree axial surface convergence angle and shoulder (1.0 mm). For the waxing of each crown, a ring-shaped stainless steel matrix (8.0mm internal diameter; 7.5 mm height) was adapted above the individual dies of epoxy resin. The Rematian Plus investment was mixed according to the manufacturer's instructions using two different concentrations of the specific liquid: 100%, 75%. Casting was performed in a Discovery Plasma Ar-arc vacuum-pressure casting machine with molds at temperatures of 430ºC, 515ºC and 600ºC. The crowns were cleaned individually in a solution (1% HF + 13% HNO3) for 10 min using a ultrasonic cleaner, with no internal adaptations, and luted with zinc phosphate cement under a 5 kg static load. The crown and die assemblies were embedded in resin and sectioned longitudinally. The area occupied by cement was observed using stereoscopic lens (10X) and measured by the Leica Qwin image analysis system (mm²). The data for each experimental condition (n=8) were analyzed by Kruskal-Wallis non-parametric test (á=0.05). The results showed that liquid dilution and the increase in mold temperature did not significantly influence the levels of internal fit of the cast titanium crowns. The lowest means (±SD) of internal misfit were obtained for the 430ºC/100%: (7.25 mm² ±1.59) and 600ºC/100% (8.8 mm² ±2.25) groups, which presented statistically similar levels of internal misfit

The Adoption of a Smart Card at the University of Porto

The University of Porto, recognizing the relevance of Information and Communication Technologies (ICT) for the overall performance of the institution, is committed to technology leadership for the benefit of the academic community. The Digital University Department is a central department dedicated to ICT, whose mission is to promote and extend the use of ICT to all the activities of the University, as well as to induce the development and adoption of innovative services in this area.In this context and following a recent partnership celebrated in July 2008 between the University and the Santander Totta Bank, the Digital University Department is supporting the adoption of a university identification card - U.PORTO Card. It is a smart card with several embedded technologies allowing the implementation of a campus card system. Although this project is still in the beginning, significant improvements have already been achieved.The main objective of this work is to present the project of the U.PORTO campus card. The goals, methodology, applications, adoption factors and ongoing developments are here discussed

A homoparentalidade na perspectiva de estudantes do Ensino Superior

Pretendeu-se com este estudo analisar a opinião de estudantes do Ensino Superior (N=115) relativamente à homoparentalidade, através da aplicação de um questionário. Verificou-se que a maioria dos sujeitos (66%) revela uma posição de desacordo relativamente à igualdade de circunstâncias entre homossexuais e heterossexuais no que diz respeito ao exercício da parentalidade, registando-se diferenças significativas no género, com o masculino menos receptivo a essa igualdade (U=654; p=0,001), assim como estudantes de Desporto e Actividade Física, em comparação com os do curso de Educação Social (U=976,5; p=0,010). O mesmo não aconteceu nas V.I. Idade e Urbanidade. A partir dos resultados são tecidas considerações relativas às responsabilidades das instituições do Ensino Superior neste tema

Effect of phosphate-bonded investments on titanium reaction layer and crown fit

This study analyzed the reaction layer and measured the marginal crown fit of cast titanium applied to different phosphate-bonded investments, prepared under the following conditions (liquid concentration/casting temperature): Rema Exakt (RE) - 100%/237°C, 75%/287°C, Castorit Super C (CS)-100%/70°C, 75%/141°C and Rematitan Plus (RP)- 100%/430°C (special to titanium cast, as the control group). The reaction layer was studied using the Vickers hardness test, and analyzed by two way ANOVA and Tukey's HSD tests (α = 0.05). Digital photographs were taken of the crowns seated on the die, the misfit was measured using an image analysis system and One-way ANOVA, and Tukey's test was applied (α = 0.05). The hardness decreased from the surface (601.17 VHN) to 150 μm (204.03 VHN). The group CS 75%/141°C presented higher hardness than the other groups, revealing higher surface contamination, but there were no differences among the groups at measurements deeper than 150 μm. The castings made with CS - 100%/70°C presented the lowest levels of marginal misfit, followed by RE -100%/237°C. The conventional investments CS (100%) and RE (100%) showed better marginal fit than RP, but the CS (75%) had higher surface contamination.(FAPESP) São Paulo Research Foundatio

Comparative study of two commercially pure titanium casting methods

The interest in using titanium to fabricate removable partial denture (RPD) frameworks has increased, but there are few studies evaluating the effects of casting methods on clasp behavior. OBJECTIVE: This study compared the occurrence of porosities and the retentive force of commercially pure titanium (CP Ti) and cobalt-chromium (Co-Cr) removable partial denture circumferential clasps cast by induction/centrifugation and plasma/vacuum-pressure. MATERIAL AND METHODS: 72 frameworks were cast from CP Ti (n=36) and Co-Cr alloy (n=36; control group). For each material, 18 frameworks were casted by electromagnetic induction and injected by centrifugation, whereas the other 18 were casted by plasma and injected by vacuum-pressure. For each casting method, three subgroups (n=6) were formed: 0.25 mm, 0.50 mm, and 0.75 mm undercuts. The specimens were radiographed and subjected to an insertion/removal test simulating 5 years of framework use. Data were analyzed by ANOVA and Tukey's to compare materials and cast methods (α=0.05). RESULTS: Three of 18 specimens of the induction/centrifugation group and 9 of 18 specimens of plasma/vacuum-pressure cast presented porosities, but only 1 and 7 specimens, respectively, were rejected for simulation test. For Co-Cr alloy, no defects were found. Comparing the casting methods, statistically significant differences (

Factores de prognóstico após ressecção de metástases hepáticas de cancro colo-rectal

© Ordem dos Médicos 2015Introduction: Surgery is the only potentially curative treatment for patients with colorectal liver metastases, resulting in 5-year survival rates of 36 - 58. Although many studies have been performed to determine prognostic factors for tumor recurrence and survival after resection of colorectal liver metastases, there are few prognostic scoring systems stratifying patients undergoing surgery for colorectal liver metastases into risk group models. Objectives: To identify, evaluate and compare the existing prognostic scores for survival after surgery for resection of colorectal liver metastases. Material and methods: Electronic search in PubMed, Cochrane and Embase from 1990 to 2013 using the terms ' hepatic resection', ' colorectal cancer' , 'liver metastasis', ' hepatectomy', ' prognostic' , and ' score' . Only studies proposing a prognostic model or risk stratification based on clinical and/or pathological variables were included. Results: From 1996 to June 2013, 19 scoring systems were identified, including one nomogram. Thirty prognostic factors were identified although none of the factors was common to all prognostic models. The 4 factors most often included were: number of liver metastases, regional lymph node metastization of primary tumor, preoperative CEA level and maximum size of metastases. The median study sample size was 305 patients (81-1 568 patients) and median follow-up was 33 months (16-54 months). All studies were retrospective and used the Cox proportional hazards model for multi-variable analysis. Conclusion: Several factors have been constantly reported as having prognostic value after liver resection of colorectal livermetastases, although there is no consensus on the ideal scoring system.info:eu-repo/semantics/publishedVersio