Praia, Cape Verde

University of Cape Verde
Praia, Cape Verde

The University of Cape Verde is a Cape Verdean university. The university was formed in 2006 by the merging of two colleges: ISE located in Praia ISECMAR in MindeloIn 2007 a third school officially joined the others: INIDA in São Jorge dos ÓrgãosOn January 31, 2014, three candidates ran for rector which was the first time in Cape Verdean history that a Cape Verdean university rector would be directly chosen by the student body, professors as well as by the staff. Of the three candidates that vied for the position, DR Judite do Nascimento overwhelmingly won the election, and became the first elected university rector in Cape Verdean history.The university offers 32 bachelor's degrees, 18 master's degrees, 13 associate's degrees, and one doctorate degree. It also plans to offer the first medical degree in the country in the short term .According to the international colleges and universities rankings , the University of Cape Verde is among the best universities in Africa; it proudly ranks 78th out of 100 best African universities. Wikipedia.

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Frederico G.S.F.,University of Cape Verde | Frederico G.S.F.,Federal University of Santa Catarina | Lazo M.J.,Grande Rio University
Nonlinear Dynamics | Year: 2016

Since the seminal work of Emmy Noether, it is well know that all conservations laws in physics, e.g., conservation of energy or conservation of momentum, are directly related to the invariance of the action under a family of transformations. However, the classical Noether’s theorem cannot yield information about constants of motion for non-conservative systems since it is not possible to formulate physically meaningful Lagrangians for this kind of systems in classical calculus of variation. On the other hand, in recent years the fractional calculus of variation within Lagrangians depending on fractional derivatives has emerged as an elegant alternative to study non-conservative systems. In the present work, we obtained a generalization of the Noether’s theorem for Lagrangians depending on mixed classical and Caputo derivatives that can be used to obtain constants of motion for dissipative systems. In addition, we also obtained Noether’s conditions for the fractional optimal control problem. © 2016 Springer Science+Business Media Dordrecht

Agency: European Commission | Branch: H2020 | Program: RIA | Phase: SFS-18-2015 | Award Amount: 4.96M | Year: 2016

SALSA will assess the role of small farms and small food businesses in delivering a sustainable and secure supply of affordable, nutritious and culturally adequate food. SALSA will identify the mechanisms which, at different scales, can strengthen the role of small farms in food systems and thereby support sustainable food and nutrition security (FNS). By considering a gradient of 30 reference regions in Europe and in Africa, we will obtain a differentiated understanding of the role of small farms and small food businesses in very differently structured food systems and situations. SALSA will elaborate and implement a transdisciplinary, multi-scale approach that builds on and connects relevant theoretical and analytical frameworks within a food systems approach, and that uses qualitative, consultative and quantitative methods. We will also test a new combination of data-based methods and tools (including satellite technologies) for rigorously assessing in quantitative terms the interrelationships between small farms, other small food businesses and FNS, paying particular attention to limiting and enabling factors. SALSA will use participatory methods, at regional level, and establish a more global Community of Practice and multi-stakeholder learning platform, based on FAOs TECA online communication and learning platform. The SALSA consortium, and the joint learning and close cooperation, have both been designed with the EU - Africa dialogue in mind. Responding to the call we will unravel the complex interrelationships between small farms, small food businesses and FNS, and unfold the role played by small farms in (a) the balance between the different dimensions of sustainability, (b) maintaining more diverse production systems, (c) supporting the urban/rural balance in terms of labour and (d) in facilitating territorial development in countries facing a strong rural population growth.

Almeida-Silva M.,University of Lisbon | Almeida S.M.,University of Lisbon | Freitas M.C.,University of Lisbon | Pio C.A.,University of Aveiro | And 2 more authors.
Journal of Toxicology and Environmental Health - Part A: Current Issues | Year: 2013

The objectives of this study were to (1) conduct an elemental characterization of airborne particles sampled in Cape Verde and (2) assess the influence of Sahara desert on local suspended particles. Particulate matter (PM10) was collected in Praia city (14°94N; 23°49W) with a low-volume sampler in order to characterize its chemical composition by k 0-INAA. The filter samples were first weighed and subsequently irradiated at the Portuguese Research Reactor. Results showed that PM 10 concentrations in Cape Verde markedly exceeded the health-based air quality standards defined by the European Union (EU), World Health Organization (WHO), and U.S. Environmental Protection Agency (EPA), in part due to the influence of Sahara dust transport. The PM10 composition was characterized essentially by high concentrations of elements originating from the soil (K, Sm, Co, Fe, Sc, Rb, Cr, Ce, and Ba) and sea (Na), and low concentrations of anthropogenic elements (As, Zn, and Sb). In addition, the high concentrations of PM measured in Cape Verde suggest that health of the population may be less affected compared with other sites where PM10 concentrations are lower but more enriched with toxic elements. © 2013 Copyright Taylor & Francis Group, LLC.

Canha N.,University of Lisbon | Canha N.,Technical University of Delft | Almeida S.M.,University of Lisbon | Freitas M.D.C.,University of Lisbon | And 5 more authors.
Atmospheric Environment | Year: 2014

A study concerning the chemical characterization of PM2.5 sampled indoors of a primary school, which burns wood for classrooms' heating, was conducted in a rural area of Portugal. A Partisol sequential sampler was placed inside of a classroom, to collect PM2.5 during the day, which corresponds to the occupied period, and during the night. The collected PM2.5 was characterized by Instrumental Neutron Activation Analysis to determine the concentration of chemical elements and by Ion Chromatography to measure Water Soluble Ions. High PM2.5 concentrations were found principally during the occupied periods (100±71μgm-3). A source apportionment study was performed by means of Positive Matrix Factorization (PMF) analysis. Results showed that four factors contributed for PM2.5 concentration whereas one factor was associated exclusively with a mixture of indoor sources: wood burning, re-suspension of soil and chalk. During classes, this indoor factor contributed for 60% of the total PM2.5 concentration. This study showed that children are exposed to high levels of PM2.5 and indicated the existence of an indoor air quality problem associated with specific indoor sources and poor ventilation. © 2014 Elsevier Ltd.

Ortet O.,University of Lisbon | Ortet O.,University of Cape Verde | Paiva A.P.,University of Lisbon
Hydrometallurgy | Year: 2015

Two thioamide derivatives, N-methyl-N-phenyl-octanthioamide (MPHTA) and N-methyl-N-cyclohexyl-octanthioamide (MCHTA), were synthesized from their amide analogues, adequately characterized, and systematically evaluated as extractants for palladium(II) from chloride media. In sequence of previous research, which revealed the adequacy of both compounds, when dissolved in toluene, to efficiently recover Pd(II) from a wide range of differently concentrated hydrochloric acid solutions, the Pd(II) solvent extraction performance of both MPHTA and MCHTA dissolved in commercial diluents is evaluated in this work. Additionally, results obtained on successive extraction-stripping cycles, involving thiourea as stripping agent, confirm the robustness and stability of these Pd(II) solvent extraction systems, even when commercial diluents are employed. Equilibrium extraction isotherms, obtained for both compounds in toluene, show a high Pd(II) loading capacity. Selectivity data has been collected for complex 4.0 M and 6.0 M HCl mixtures containing two, three, four or five metal ions - palladium(II), platinum(IV), rhodium(III), aluminum(III), and iron(III). Fe(III) is the only metal that affects Pd(II) extraction of both MPHTA and MCHTA, as Pd(II) distribution ratios are significantly reduced; on the other hand, the other metals are practically not extracted. These selectivity results are encouraging from a practical point of view, since both extractants may prove suitable to efficiently and selectively recover Pd(II) from hydrometallurgical solutions coming from the leaching of secondary raw material sources. © 2014 Elsevier B.V. All rights reserved.

Ortet O.,University of Lisbon | Ortet O.,University of Cape Verde | Paiva A.P.,University of Lisbon
Separation and Purification Technology | Year: 2015

Previous research showed that N,N′-dimethyl-N,N′-dicyclohexylthiodiglycolamide (DMDCHTDGA) in 1,2-dichloroethane is able to co-extract platinum(IV) and palladium(II) from concentrated hydrochloric acid solutions. Following a detailed study about Pt(IV), the present work focuses on the thorough investigation of Pd(II) extraction by DMDCHTDGA in toluene. The removal of Pd(II) is rather efficient from 0.5 M to 5.5 M HCl, and progressively decreases until 7.5 M HCl. Pd(II) stripping is better achieved by an acidic thiourea solution, but ammonia aqueous phases can alternatively be used for some cases. Pd(II) extraction kinetics is relatively favored (5-15 min). The robustness of DMDCHTDGA to extract Pd(II) has been confirmed through five successive reutilization experiments. The maximum loading capacity for Pd(II) reaches a 2.5 DMDCHTDGA:Pd(II) molar ratio. Pd(II) can selectively be recovered by DMDCHTDGA from 4.0 M or 6.0 M HCl complex mixtures containing equivalent concentrations of Pt(IV) and Rh(III), and fivefold Fe(III) and Al(III) concentrations, although with a slight Pt(IV) contamination. © 2015 Elsevier B.V. All rights reserved.

Agra A.,University of Aveiro | Christiansen M.,Norwegian University of Science and Technology | Delgado A.,University of Cape Verde | Hvattum L.M.,Norwegian University of Science and Technology
Computers and Operations Research | Year: 2015

This paper describes a stochastic short sea shipping problem where a company is responsible for both the distribution of oil products between islands and the inventory management of those products at consumption storage tanks located at ports. In general, ship routing and scheduling is associated with uncertainty in weather conditions and unpredictable waiting times at ports. In this work, both sailing times and port times are considered to be stochastic parameters. A two-stage stochastic programming model with recourse is presented where the first stage consists of routing, loading and unloading decisions, and the second stage consists of scheduling and inventory decisions. The model is solved using a decomposition approach similar to an L-shaped algorithm where optimality cuts are added dynamically, and this solution process is embedded within the sample average approximation method. A computational study based on real-world instances is presented. © 2015 Elsevier Ltd. All rights reserved.

Fragoso M.,Ford Motor Company | Fragoso M.,University of Cape Verde | Wen N.,Ford Motor Company | Kumar S.,Ford Motor Company | And 5 more authors.
Physics in Medicine and Biology | Year: 2010

Modern cancer treatment techniques, such as intensity-modulated radiation therapy (IMRT) and stereotactic body radiation therapy (SBRT), have greatly increased the demand for more accurate treatment planning (structure definition, dose calculation, etc) and dose delivery. The ability to use fast and accurate Monte Carlo (MC)-based dose calculations within a commercial treatment planning system (TPS) in the clinical setting is now becoming more of a reality. This study describes the dosimetric verification and initial clinical evaluation of a new commercial MC-based photon beam dose calculation algorithm, within the iPlan v.4.1 TPS (Brain LAB AG, Feldkirchen, Germany). Experimental verification of the MC photon beam model was performed with film and ionization chambers in water phantoms and in heterogeneous solid-water slabs containing bone and lung-equivalent materials for a 6 MV photon beam from a Novalis (Brain LAB) linear accelerator (linac) with a micro-multileaf collimator (m3 MLC). The agreement between calculated and measured dose distributions in the water phantom verification tests was, on average, within 2%/1 mm (high dose/high gradient) and was within ±4%/2 mm in the heterogeneous slab geometries. Example treatment plans in the lung show significant differences between the MC and one-dimensional pencil beam (PB) algorithms within iPlan, especially for small lesions in the lung, where electronic disequilibrium effects are emphasized. Other userspecific features in the iPlan system, such as options to select dose to water or dose to medium, and the mean variance level, have been investigated. Timing results for typical lung treatment plans show the total computation time (including that for processing and I/O) to be less than 10 min for 1-2% mean variance (running on a single PC with 8 Intel Xeon X5355 CPUs, 2.66 GHz). Overall, the iPlan MC algorithm is demonstrated to be an accurate and efficient dose algorithm, incorporating robust tools for MC-based SBRT treatment planning in the routine clinical setting. © 2010 Institute of Physics and Engineering in Medicine Printed in the UK.

The damages caused by the millipede, Bandeirenica caboverdus constitute a major agricultural problem in Cape Verde and were the fundamental reason for the internal quarantine measures undertaken by the government in order to protect the uninfected islands. The main purpose of the present research is to find the most effective method of treatment to be implemented in the Postharvest Centre in Porto Novo, Santo Antão Island. The moderate heat and the hot water treatment were tested but not recommended because of the negative impact on the treated products or due to the elevated treatment costs. The results show that the immersion of potato, sweet potato, cassava, yam and carrot in ambient water for 20 minutes is effective and removes 100% of millipedes. After this treatment, the tested products can be commercialized free of millipedes on the other islands of the archipelago. The addition of sodium hypochlorite reduces the time of immersion to 15 minutes.

Do Canto S.,University of Cape Verde | Da Rosa I.B.,University of Cape Verde
Iberian Conference on Information Systems and Technologies, CISTI | Year: 2014

Cape Verde has been experiencing in the past few years, notorious progresses on the development of Information and Communication Technologies, especially in e-government and on the democratization of Internet access. In this context, usability is of paramount importance. This paper analyses the usability of the Cape Verdean government websites, by identifying the existing problems and by proposing corrective measures. Such analysis is performed using a sample of 10 government websites and using focus group and usability tests for each one of these websites. © 2014 AISTI.

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