Prospective scenarios for offshore private banking firms serving Brazilians in 2040

Objective: This article aims to explore potential future scenarios for the offshore Private Banking industry serving Brazilian individuals, considering the increasing competition. Methods:  The research employs the Prospective Scenarios approach, including a Delphi panel with industry’s experts in two rounds of interviews. Results: The results indicated a consensus among the participants regarding two driving forces for the offshore Private Banking Industry: Regulation and Educational Challenges. The work builds four prospective scenarios for 2040: The Sky is the limit; Swimming against the Tide; The Dark Ages; and Too Much Openness Misses the Optimal Point. Conclusions: The research   concludes that Private Banking firms should closely monitor the main regulations that can impact their business. In addition, offshore Private Banking firms should invest in educating potential investors in Brazil, especially the rising affluent segment and the millennials demographic group, leveraging all the technological resources at their disposal. Both scholars and practitioners might also replicate the methodology used of prospective scenarios using Delphi (Lima, 2014; Skulmoski, Hartman & Krahn, 2007) method to other sectors

Efficient joint channel equalization and tracking for V2X communications using SC-FDE schemes

Our aim with this paper is to present a solution suitable for vehicle-to-everything (V2X) communications, particularly, when employing single-carrier modulations combined with frequency-domain equalization (SC-FDE). In fact, we consider the V2X channel to be doubly-selective, where the variation of the channel in time is due to the presence of a Doppler term. Accordingly, the equalization procedure is dealt by a low-complexity iterative frequency-domain equalizer based on the iterative block decisionfeedback equalization (IB-DFE) while the tracking procedure is conducted employing an extended Kalman filter (EKF). The proposed system is very efficient since it allows a very low density of training symbols, even for fast-varying channels. Furthermore only two training symbols are required to initialize the tracking procedure. Thus, ensuring low latency together with reduced channel estimation overheads.publishe

Ambiente de interatividade : restaurante

Monografia (graduação)—Universidade de Brasília, Instituto de Artes, Departamento de Desenho Industrial, 2015.O presente relatório, desenvolvido na disciplina de Diplomação em Projeto de Produto no curso de Desenho Industrial da Universidade de Brasília, documenta o processo de Design de um espaço de interação em restaurantes focado em ambiente de espera. O objetivo do estudo é questionar a interação em situação de espera, de maneira a otimizar a utilização do espaço e adaptabilidade as diferentes circunstâncias. Para nortear este estudo foi utilizado o Co-Design, de maneira a entender o panorama de cada um dos partícipes desta problemática. Já de antemão não há aqui a intenção de acabar com a espera, visto que essa é parte importante de todo o contexto trabalhado

Slewing crane with electromagnet

This paper describes a slewing crane with electromagnet, operated by three three-phase induction motors. A switchboard described in a separate paper, which also depicts the electromagnet construction details, drives the motors and the electromagnet. From its seat – mounted on the crane - an operator can make the crane arm slew left or right. The electromagnet can be moved back, forward, up or down. The crane is made of iron, has a height of 3m and a length of 2,5m. Such proportions make it very suitable for science fair events

Reparo de cerâmica com resina composta

Tese (doutorado) - Universidade Federal de Santa Catarina, Centro de Ciências da Saúde. Programa de Pós-Graduação em OdontologiaA atual pesquisa objetivou encontrar a força de união ao cisalhamento do reparo de resina composta à cerâmica feldspática empregando três tratamentos de superfície com laser de Nd:YAG em comparação com quatro tratamentos convencionais. Três blocos de cerâmica para CAD/ CAM (IPS Empress CAD) foram cortados em 77 blocos menores com 2 mm de largura e 2 mm de profundidade. Estes foram incluídos em resina acrílica e as superfícies foram delimitadas com uma fita adesiva com um orifício central de 3 mm de diâmetro. Os tratamentos de superfície foram feitos de acordo com os seguintes Grupos (n=10): A - rugosidade com ponta diamantada mais ácido fosfórico; B - condicionamento com ácido hidrofluorídrico; C - jateamento com partículas de Al2O3 com 50 µm; D - jateamento com partículas de sílica com 30 µm; E - laser de Nd:YAG com pó de carbono; F - laser de Nd:YAG com pó de sílica; G - laser de Nd:YAG com pó de sílica mais condicionamento com ácido hidrofluorídrico. Silano (Monobond - S) seguido do adesivo (Tetric N-bond) foi aplicado após os tratamentos de superfície. O Grupo D recebeu um silano (ESPE-SIL) e um adesivo (Vision Bond) diferentes. As amostras foram reparadas com resina composta (Tetric N-ceram) usando uma matriz metálica. O adesivo Nbond foi fotopolimerizado por 10 segundos e o Vision Bond por 20 segundos. As camadas de resina composta foram fotopolimerizadas por 20 segundos. As amostras de cerâmica-resina foram estocadas em água destilada por 48 horas. Os espécimes foram então submetidos a força de cisalhamento por meio de uma máquina de ensaios universais - Instron. Após os testes, as amostras fraturadas foram armazenadas para posterior análise do modo de falha por microscopia óptica. Uma amostra de cada Grupo e uma amostra sem tratamento de superfície não receberam os procedimentos adesivos restauradores e foram empregados para análise morfológica por microscopia eletrônica de varredura. Os dados dos testes de cisalhamento foram submetidos à análise de variância - ANOVA, seguido pelo teste de Tukey. Os resultados mostraram que a força de união ao cisalhamento do Grupo B foi 16,59 MPa, significativamente mais alta do que os demais Grupos. Os tratamentos com laser evidenciaram as menores médias (Grupo E - 3,87; Grupo F - 4,39; Grupo G - 7,41 MPa). O Grupo A alcançou 7,89 MPa, estatisticamente similar aos Grupos com laser. Os Grupos C e D foram estatisticamente similares com 10,01 e 11,42 MPa, respectivamente. Os modos de falha relatados foram do tipo adesivo e misto. A análise morfológica revelou coerência com os dados de força de união coletados. Foi determinado que o condicionamento com ácido fluorídrico rendeu melhor força de união ao cisalhamento.The present research was reasoned in achieve the shear bond strength of a composite resin repair to a feldspathic ceramic using three Nd:YAG laser surface treatments in comparison with four conventional ways. Three ceramic blocks for CAD/CAM (IPS Empress® CAD) were cut in 77 smaller blocks with 2-mm width and 2-mm depth. Those blocks were included in acrylic resin and the surfaces were delimited with an adhesive tape with a hole of 3-mm diameter. The surface treatments were done in agreement with the following Groups (n=10): A - roughening with a diamond bur + phosphoric acid; B - etching with hydrofluoric acid; C - sandblasting with 50-ìm Al2O3; D - sandblasting with 30-ìm silica; E - Nd:YAG laser with carbon powder; F - Nd:YAG laser with 30-ìm silica; G - Nd:YAG laser with 30-ìm silica + etching with hydrofluoric acid. Silane (Monobond - S) followed by the adhesive (Tetric N-bond) was applied after the surface treatments. Group D received a different silane (ESPE-SIL) and adhesive (Vision Bond). The samples were repaired with composite resin (Tetric N-ceram) using a metal matrix. N-bond adhesive was lightpolymerized for 10 seconds and the Vision Bond for 20 seconds. Composite resin layers were lightpolymerized for 20 seconds. The ceramic-resin samples were stored in distilled water for 48 hours. The specimens were then subjected to a shear force via an Instron Machine. After testing, the fractured samples were stored for posterior analysis of the failure mode by optical microscopy. One sample of each Group and one more sample with no surface treatment did not receive the restorative procedures and were used for morphological analysis by scanning electron microscopy. The shear bond strength data was submitted to one-way ANOVA followed by Tukey test. The results showed that the shear bond strength to Group B was 16,59 MPa, significantly higher than those others Groups. The laser treatments showed the lowest averages (Group E - 3,87; Group F - 4,39; and Group G - 7,41 MPa). Group A reached 7,89 MPa, statistically similar to the laser Groups. Groups C and D were statistically similar with 10,01 and 11,42 MPa, respectively. The failure modes reported were adhesive and mixed. The morphological analysis were coherent with the bond strength data collected. It was determined that the etching with hydrofluoric acid yielded better shear bond strength

Iterative analog-digital multi-user equalizer for wideband millimeter wave massive MIMO systems

Most of the previous work on hybrid transmit and receive beamforming focused on narrowband channels. Because the millimeter wave channels are expected to be wideband, it is crucial to propose efficient solutions for frequency-selective channels. In this regard, this paper proposes an iterative analog-digital multi-user equalizer scheme for the uplink of wideband millimeter-wave massive multiple-input-multiple-output (MIMO) systems. By iterative equalizer we mean that both analog and digital parts are updated using as input the estimates obtained at the previous iteration. The proposed iterative analog-digital multi-user equalizer is designed by minimizing the sum of the mean square error of the data estimates over the subcarriers. We assume that the analog part is fixed for all subcarriers while the digital part is computed on a per subcarrier basis. Due to the complexity of the resulting optimization problem, a sequential approach is proposed to compute the analog phase shifters values for each radio frequency (RF) chain. We also derive an accurate, semi-analytical approach for obtaining the bit error rate (BER) of the proposed hybrid system. The proposed solution is compared with other hybrid equalizer schemes, recently designed for wideband millimeter-wave (mmWave) massive MIMO systems. The simulation results show that the performance of the developed analog-digital multi-user equalizer is close to full-digital counterpart and outperforms the previous hybrid approach.publishe

Madres em aço com secção Z enformadas a frio em situação de incêndio

Mestrado em Engenharia CivilNos dias que correm, a projeção de estruturas cada vez mais leves e resistentes, por razões de ordem económica e/ou estética, tem levado os engenheiros a elegerem a solução metálica como a solução estrutural mais eficiente. Os perfis de aço estrutural presentes na construção encontram-se em três formas: (i) perfis laminados a quente; (ii) perfis soldados; (iii) perfis enformados a frio. Os perfis enformados a frio têm como característica a reduzida espessura das paredes da secção transversal, possibilitando a ocorrência de fenómenos de instabilidade (local de placa, distorcional e global). Os fenómenos de instabilidade, para este tipo perfis, são modos de colapso. No caso de incêndio (elevadas temperaturas) estes fenómenos são intensificados. A presente dissertação tem como objetivo aumentar o conhecimento do comportamento estrutural dos perfis enformados a frio em situação de incêndio, nomeadamente madres (vigas de cobertura) de secção Z. Para isso, é elaborada uma simulação numérica, com base em análises numéricas não lineares da resistência ao fogo das madres, através do programa de elementos finitos SAFIR. Na presente análise é avaliada ainda a influência das imperfeições geométricas e imperfeições estruturais (tensões residuais) na resistência última das madres. Os resultados obtidos são comparados com as cargas últimas fornecidas pelas prescrições do Eurocódigo 3.Nowadays, the design of increasingly lighter and stronger structures, for economic and/or aesthetic reasons, has led engineers to select metal structures as the most effective structural solution. One can find structural steel profiles in three ways: (i) hot rolled profiles; (ii) welded profiles; (iii) cold formed profiles. Cold-formed profiles are characterized by a reduced cross section wall thickness, allowing the occurrence of instability phenomena (local plate, distortional and global). For this profiles type, the instability phenomena is a collapse mode. In case of a fire (high temperature) this phenomena is intensified. This dissertation aims to increase the knowledge of the structural behavior of cold-formed profiles in case of a fire, in particular purlins (roof trusses) of Z section. For this study, a numerical simulation was developed, based on non-linear numerical analysis to obtain the ultimate fire resistance of beams, through the finite element program SAFIR. In the present analysis is also evaluated the influence of geometric and structural imperfections (residual stresses) on the ultimate strength of purlins. The obtained results are compared with the ultimate resistance provided by the requirements of Eurocode 3