269 research outputs found
Gift Young Engineers: An Extra-Curricular Initiative for Updating Computer and Electrical Engineering Courses
No full textThe curricula of engineering courses are well defined by the central government for all Brazilian universities. Indeed, there are some mandatory determinations that must be fulfilled prior to the accreditation of any engineering course in Brazil. Modifications must be submitted for evaluation beforehand, resulting in a process that sometimes takes years to be approved. That is a secure way to guarantee that the fundamentals of each engineering program will be part of the students’ carrier all over the country, and at the same time a problem when you need to introduce new technological subjects. That poses a problem when you have new demands for technological curricular components that could express the actual state of the art of modern subjects. Trying to solve these issues some professors from the Federal University of Amazonas developed a flexible extra-curricular program for electrical and computer engineering courses, named Gift Young Engineers. This paper describes the philosophy of these extra-curricular programs. Some examples of successful particular partnerships are also discussed. Indeed the proposed training programs for Digital TV Systems (hardware and software) will be presented and analyzed in details. The obtained results will also be discussed in order to contribute to similar experiences worldwide
Vergelijking van de bereidingswijzen van 60 gew.% en 80 gew.% salpeterzuur
No full textDocument(en) uit de collectie Chemische ProcestechnologieDelftChemTechApplied Science
Mandibular kinematics in dentofacial deformities before orthognathic surgery
No full textAIM: Changes in facial morphology may cause disturbances in stomatognathic functions. The aim of the current investigation was to quantitatively assess the three-dimensional condylar paths during standardized mandibular movements in patients with dentofacial deformities before orthognathic surgery and in healthy subjects.
METHODS: Patients with dentofacial deformity were divided in two groups: DG-II (n = 15 with class II, mean age 26.3 years) and DG-III (n= 15 with class III, mean age 26.2 years), with 3 men and 12 women each, were assessed during the preoperative orthodontic treatment. Fifteen healthy young adults, paired for age and sex, were selected for control group. Mandibular kinematics were recorded during maximum mandibular border movements: mouth opening (MMO) and closing, lateral excursions and protrusion, using an infrared optoelectronic 3D-motion analyzer (BTS SMART System), with a 500 Hz sampling rate.
RESULTS: Patients and healthy subjects had similar age (1-way ANOVA, p≥0.05). The DG-II showed larger laterotrusion asymmetry than CG (Table 1). At MMO, the percentage of mandibular movement explained by condylar rotation was larger in the DG-III than DG-II (2-way ANOVA, p=0.001; Bonferroni post-hoc test, p=0.045, Figure.1).
CONCLUSION: The outcomes suggest that the proposed method could be a useful diagnostic tool to detect altered function in DG patients before orthognathic surgery. ACKNOWLEDGEMENT: Provost’s Office for Research of the University of São Paulo.
*The first author received a scholarship from CNPq (Science without Borders), Brazil.
Table 1: Kinematics indices of mandibular motion, mean±SD, 1-way ANOVA.
Measure
Control
DG-II
DG-III
p-value
Mean
SD
Mean
SD
Mean
SD
Maximum opening – MMO (mm)
47.8
4.0
44.8
5.5
46.5
7.2
0.360
MMO deviation (mm)
2.7
1.1
3.6
1.6
3.4
2.3
0.358
Maximum laterotrusion
9.7
2.1
8.9
1.7
8.1
1.7
0.068
Laterotrusion asymmetry
0.7*
0.7
2.6*
2.6
1.1
1.1
0.011
Maximum Protrusion
7.7
1.7
7.4
1.6
6.5
2.0
0.196
*=Bonferroni post-hoc test, p=0.014.
Figure 1: Percentage of mandibular rotation during mouth opening and closin
The Aero-Hydrodynamic Characteristics of Yachts Sailing Upwind in Waves
No full textA common practice during the design of a sailing yacht is to assume an ideal environment. The wind is constant in intensity and direction and the sea is calm. In this situation, an equilibrium between the aerodynamic and hydrodynamic forces and moments can be found. The equations of equilibrium are thus solved to find the best setup (combination of sails, sail trim, etc.) in order to achieve the maximum boat speed. This procedure is the core of a 'traditional' Velocity Prediction Program (VPP), which was first introduced in 1976. Since then many improvements have been made and nowadays VPPs are capable of dealing with the most diverse designs. However, in nearly forty years of life, the nature of these programs has not changed and, still, important dynamic effects caused by the real environment, are not taken into account. Investigating the performance of a yacht taking into account these effects, is far from easy. Indeed, the equations of equilibrium should be replaced by the more complicated equations of motion which need to be solved in the time domain. However, in recent years, the dynamic characteristics of a yacht sailing in waves and shifting winds (real environment) have become a more popular topic in the sailing yacht community. In the wake of the increasing interest towards this subject, the present work aims to investigate some important dynamic aspects. The effect of the surge motion and of the heeling angle on the motions of heave and pitch, and on the mean added resistance, are studied by means of towing-tank tests. These are performed on two models of series 4 of the Delft Systematic Yacht Hull Series. Then, time-domain simulations are performed to study the effect of a pitch-induced oscillating aerodynamic force on the seakeeping of yachts sailing upwind in waves. The aerodynamic force is calculated using a quasi-steady as well as an unsteady method, whereas the hydrodynamic part of the problem is tackled using a strip-theory program which is capable of considering asymmetric hull shapes (e.g. hulls with a heeling angle). The results show that surge has a small influence on the motions and on the mean added resistance alike. The heeling angle on the other hand, prove to have a large effect on the seakeeping of the models. This effect can be qualitatively predicted by the strip-theory program, although the trend is not always correct. Finally, in same cases, the aerodynamic force significantly affects the pitch and heave motions and this results in a considerable reduction of the added resistance in waves.Ship Hydromechanics and StructuresMaritime and Transport TechnologyMechanical, Maritime and Materials Engineerin
Stofoverdrachtsproblemen in geroerde gas-vloeistof-vast systemen
No full textApplied SciencesKramers Laboratorium voor Fysische Technologi
Een alternatief voor een verticale wand golfbreker: Vergelijking van verticale wand caisson met geperforeerd caisson
No full textCivil Engineering and Geoscience
Automatismi espulsivi e discrezionalità amministrativa
No full textLa Corte costituzionale ha dichiarato illegittime alcune disposizioni del d. lgs. 25 luglio 1998, n. 286 (c.d. Testo unico in materia di immigrazione) nella parte in cui prevedono che, per il solo fatto di essere stato condannato per un certo reato, lo straniero non possa essere autorizzato ad entrare e soggiornare nel territorio dello Stato e, se già presente, debba essere espulso (c.d. automatismo espulsivo). È necessario, secondo la Corte, che la valutazione della pericolosità dello straniero e la decisione in merito al soggiorno o all’espulsione siano lasciate alla discrezionalità della P.A. L’autrice distingue tra il giudizio di pericolosità dello straniero e la (correlata ma distinta) decisione sull’espulsione, per chiarire che il giudizio di pericolosità sociale dovrebbe essere inquadrato non nell’ambito della discrezionalità amministrativa, bensì nell’ambito della c.d. discrezionalità tecnica.The Constitutional Court has declared illegitimate certain provisions of Legislative Decree no. 286 of 25 July 1998 (the so-called Consolidated Text on Immigration) insofar as they provide that, for the merefact of having been convicted of a specific crime, a foreigner cannot be authorised to enter and reside in the territory of the State and, if already present, must be expelled (so-called automatic expulsion). It is necessary, according to the Court, that the assessment of the foreigner's dangerousness and the decision on his stay or expulsion be left to the discretion of the Public Administration. The author distinguishes between the assessment of a foreigner's dangerousness and the (related but distinct) decision on expulsion, in order to make it clear that the judgement of social dangerousness should be framed not in the sphere of administrative discretion, but within the scope of so-called technical discretion
Design of a 95% Glass Climate Adaptive Curved Canopy
No full textThe Design of a 95% glass climate adaptive curved canopy is analysedBuilding TechnologyArchitecture and The Built Environmen
Physical Activity In Brazilian Women [atividade Física Em Mulheres Brasileiras]
No full text[No abstract available]3410439441Sims, J., Hill, K., Hunt, S., Haralambous, B., Physical activity recommendations for older Australians (2010) Australas J Ageing., 29 (2), pp. 81-87Annear, M.J., Cushman, G., Gidlow, B., Leisure time physical activity differences among older adults from diverse socioeconomic neighborhoods (2009) Health Place., 15 (2), pp. 482-490Franchi, K.M.B., Montenegro Junior, R.M., Atividade física: Uma necessidade para a boa saúde na terceira idade (2005) Rev Bras Promoç Saúde., 18 (3), pp. 152-156Jurj, A.L., Wen, W., Gao, Y.T., Matthews, C.E., Yang, G., Li, H.L., Patterns and correlates of physical activity: A cross-sectional study in urban Chinese women (2007) BMC Public Health., 7, p. 213Jurakic, D., Pedisic, Z., Greblo, Z., Physical activity in different domains and health-related quality of life: A population-based study (2010) Qual Life Res., 19 (9), pp. 1303-1309Silva, R.B., Costa-Paiva, L., Pinto Neto, A.M., Braga, A.A., Morais, S.S., Atividade física habitual e risco cardiovascular na pós-menopausa (2006) Rev Assoc Med Bras., 52 (4), pp. 242-246Nitz, J.C., Chay, N.L., Changes in activity level in women aged 40-80 years (2007) Climacteric., 10 (5), pp. 408-415Dalla Vecchia, R., Ruiz, T., Bocchi, S.C.M., Corrente, J.E., Qualidade de vida na terceira idade: Um conceito subjetivo (2005) Rev Bras Epidemiol., 8 (3), pp. 246-252Carvalho, E.D., Valadares, A.L.R., Costa-Paiva, L.H., Pedro, A.O., Morais, S.S., Pinto-Neto, A.M., Physical activity and quality of life in women aged 60 or older: Associated factors (2010) Rev Bras Ginecol Obstet., 32 (9), pp. 433-440White, S.M., Wójcicki, T.R., McAuley, E., Physical activity and quality of life in community dwelling older adults (2009) Health Qual Life Outcomes., 7, p. 10Stewart, K.J., Physical activity and aging (2005) Ann N Y Acad Sci., 1055, pp. 193-206Valadares, A.L.R., Carvalho, E.D., Costa-Paiva, L.H., Morais, S.S., Pinto-Neto, A.M., Association between different types of physical activities and quality of life in women aged 60 years or over (2011) Rev Assoc Med Bras., 57 (4), pp. 450-455Hallal, P.C., Dumith, S.C., Bastos, J.P., Reichert, F.F., Siqueira, F.V., Azevedo, M.R., Evolução da pesquisa epidemiológica em atividade física no Brasil: Revisão sistemática (2007) Rev Saúde Pública., 41 (3), pp. 453-460Knuth, A.G., Bacchieri, G., Victora, C.G., Hallal, P.C., Changes in physical activity among Brazilian adults over a 5-year period (2010) J Epidemiol Community Health., 64 (7), pp. 591-595Matsudo, V.K., Matsudo, S.M., Araújo, T.L., Andrade, D.R., Oliveira, L.C., Hallal, P.C., Time trends in physical activity in the state of São Paulo, Brazil: 2002-2008 (2010) Med Sci Sports Exerc., 42 (12), pp. 2231-2236(2009) Secretaria de Vigilância em Saúde. Secretaria de Gestão Estratégica e Participativa. VIGITEL Brasil 2008: Vigilância de fatores de risco e proteção para doenças crônicas por inquérito telefônico, , Brasil. Ministério da Saúde. Brasília (DF): Ministério da SaúdeMalta, D.C., Moura, E.C., Castro, A.M., Cruz, D.K.A., Morais Neto, O.L., Monteiro, C.A., Padrão de atividade física em adultos brasileiros: Resultados de um inquérito por entrevistas telefônicas, 2006 (2009) Epidemiol Serv Saúde., 18 (1), pp. 7-16Silva Jr., J.B., Inquéritos nacionais de saúde (2011) Rev Bras Epidemiol., 14, pp. 3-4(2012) Secretaria de Vigilância em Saúde. Secretaria de Gestão Estratégica e Participativa. VIGITEL Brasil 2011: Vigilância de fatores de risco e proteção para doenças crônicas por inquérito telefônico, , Brasil. Ministério da Saúde. Brasília (DF): Ministério da SaúdePitanga, F.J.G., Lessa, I., Barbosa, P.J.B., Barbosa, S.J.O., Costa, M.C., Lopes, A.S., Fatores sociodemográficos associados aos diferentes domínios da atividade física em adultos de etnia negra (2012) Rev Bras Epidemiol., 15 (2), pp. 363-375Hallal, P.C., Knuth, A.G., Reis, R.S., Rombaldi, A.J., Malta, D.C., Iser, B.P.M., Bernal, R.T.I., Florindo, A.A., Time trends of physical activity in Brazil (2006-2009) (2011) Rev Bras Epidemiol., 14 (3), pp. 53-60Gillespie, L.D., Robertson, M.C., Gillespie, W.J., Lamb, S.E., Gates, S., Cumming, R.G., Interventions for preventing falls in older people living in the community (2009) Cochrane Database Syst Rev., (2), pp. CD00714
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