A Tabu Search algorithm for ground station scheduling problem

(c) 2014 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other users, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works for resale or redistribution to servers or lists, or reuse of any copyrighted components of this work in other works.Mission planning plays an important role in satellite control systems. Satellites are not autonomously operated in many cases but are controlled by tele-commands transmitted from ground stations. Therefore, mission scheduling is crucial to efficient satellite control systems, especially with increase of number of satellites and more complex missions to be planned. In a general setting, the satellite mission scheduling consists in allocating tasks such as observation, communication, etc. to resources (spacecrafts (SCs), satellites, ground stations). One common version of this problem is that of ground station scheduling, in which the aim is to compute an optimal planning of communications between satellites and operations teams of Ground Station (GS). Because the communication between SCs and GSs can be done during specific window times, this problem can also be seen as a window time scheduling problem. The required communication time is usually quite smaller than the window of visibility of SCs to GSs, however, clashes are produced, making the problem highly constrained. In this paper we present a Tabu Search (TS) algorithm for the problem, while considering several objective functions, namely, windows fitness, clashes fitness, time requirement fitness, and resource usage fitness. The proposed algorithm is evaluated by a set of problem instances of varying size and complexity generated with the STK simulation toolkit. The computational results showed the efficacy of TS for solving the problem on all considered objectives.Peer ReviewedPostprint (author's final draft

Higgs effective Hlilj vertex from heavy νR and applications to LFV

The European Physical Society Conference on High Energy Physics 5-12 July, 2017 VeniceWe present a new computation of the Lepton Flavor Violating effective vertex involving the Higgs boson and two leptons with different flavors. This vertex is generated from the integration to oneloop level of the heavy right handed neutrinos which are considered here within the context of the Low Scale Seesaw Models and with masses close to the TeV scale. We apply the Mass Insertion Approximation technique to compute the loop contributions from these heavy νR and derive a symple analytical formula for the Hli lj effective vertex in terms of the input Yν Yukawa coupling matrix and right handed MR neutrino masses. Some interesting phenomenological applications of this Hli lj effective vertex are also includedWe thank our respective projects: FPA2016-78645-P (MINECO(Spain)/FEDER(EU)); ITN-ELUSIVES H2020-MSCA-ITN-2015//674896 (EU); ANPCyT PICT 2013-2266 (Argentina

The hang air city

Postprint (published version

A comparison study on meta-heuristics for ground station scheduling problem

In ground station scheduling problem the aim is to compute an optimal planning of communications between Spacecrafts (SCs) and operations teams of Ground Stations (GSs). While such allocation of tasks to ground stations traditionally is mostly done by human intervention, modern scheduling systems look at optimization and automation features. Such features, on the one hand, would increase the efficiency and productivity of the mission planning systems by handling a larger number of missions, achieve a higher usage of the infrastructure (grand stations' antennae) and, on the other, would avoid error-prone human allocation and reduce human labour costs. Designing such modern, automated scheduling/planning systems is however challenging due to the highly constraint and complex nature of the problem seeking to optimize along various objectives or system parameters. In this paper we present a study on the performance of several meta-heuristics methods for solving ground station scheduling problem. Local search methods (Hill Climbing, Simulated Annealing and Tabu Search) and population-based methods (GA, Steady State GA and Struggle GA) have been considered for the study. The performance of these resolution methods was measured by a set of instances of varying size and complexity generated by STK toolkit. The study revealed the strengths and weaknesses of the considered methods while solving different size instances and considering several objective functions, namely, windows fitness, clashes fitness, time requirement fitness, and resource usage fitness.Peer ReviewedPostprint (author's final draft

Resolució de "Ground-Station Scheduling" amb mètodes heurístics

Adjunto la memòria i el codi de la pràctica. Atès que el codi compilat ocupa masses megues com per adjuntar-lo, l'envio descompilat. Aquest està preparat per córrer en entorns linux. No es necessiten llibreries adicionals per compilar-lo, simlement un compilador de C++ com el G++

Linking Zoonosis Emergence to Farmland Invasion by Fluctuating Herbivores : Common Vole Populations and Tularemia Outbreaks in NW Spain

FUNDING This work contributes to the projects ECOTULA (CGL2015- 66962-C2-1-R) and BOOMRAT (PID2019-109327RB-I00) funded by the Government of Spain, and regional project GESINTTOP (co-funded by Instituto Tecnológico Agrario de Castilla y León—Junta de Castilla y León (ITACYL-JCYL), Diputación Provincial de Palencia and Diputación Provincial de Valladolid). SH-C was supported by a Ph.D. studentship from Junta de Castilla-y-León (co-funded by European Social Fund, Orden 10/11/2016). ACKNOWLEDGMENTS We are grateful to all the people that contributed to the long- term vole monitoring over the last 10 years (Leticia Arroyo, Daniel Jareño, Jose-Luis Guzmán, Ruth Rodríguez-Pastor, Juan Romairone, Deon Roos, and Cristina Marín) or contributed to the study of the Francisella—Microtus interactions (Dolors Vidal, Raquel Escudero, Pedro Anda, and Beatriz Arroyo).Peer reviewedPublisher PD

Evaluación de la formación continua en el sector sanitario : resultados de la formación en uso racional del medicamento

La evaluación de la eficacia de la formación es un reto para las organizaciones de hoy en día. En este artículo presentamos los resultados de una evaluación llevada a cabo para medir la transferencia de un plan de formación sobre el uso racional de medicamentos dirigido a 1550 profesionales del sector sanitario. Los datos se recogen mediante una encuesta al participante, dos meses después de la formación. Los resultados muestran que muchos de los participantes mejoraron su actuación profesional, en especial en sus funciones relacionadas con la selección y uso de medicamentos. También se detectan factores clave para la transferencia, tales como la motivación y el apoyo de la organización. En el artículo, reflexionamos sobre los puntos fuertes y débiles del plan de formación para así ayudar a otros investigadores/as y prácticos/as a avanzar en la mejora de la transferencia y la eficacia de la formaciónThe evaluation of training efficacy is one of the challenges of today's organizations. In this article we present the results of an evaluation carried out in order to measure transfer of a training plan about the rational use of medicines addressed to 1550 health professionals. Data is collected by means of a survey to the trainee, two months after the training program. Results show that most of the trainees have improved their professional performance, in special the duties related to the selection and use of medicines. Key factors for transfer are also detected, such as motivation and support from the organization. In the paper, we reflect on the strengths and weaknesses of the training plan so as to help other researchers and practitioners to advance towards improving transfer of training and the efficacy of trainin

Global estimates of human papillomavirus vaccination coverage by region and income level: a pooled analysis

Background Since 2006, many countries have implemented publicly funded human papillomavirus (HPV) immunisation programmes. However, global estimates of the extent and impact of vaccine coverage are still unavailable. We aimed to quantify worldwide cumulative coverage of publicly funded HPV immunisation programmes up to 2014, and the potential impact on future cervical cancer cases and deaths. Methods Between Nov 1 and Dec 22, 2014, we systematically reviewed PubMed, Scopus, and official websites to identify HPV immunisation programmes worldwide, and retrieved age-specific HPV vaccination coverage rates up to October, 2014. To estimate the coverage and number of vaccinated women, retrieved coverage rates were converted into birth-cohort-specific rates, with an imputation algorithm to impute missing data, and applied to global population estimates and cervical cancer projections by country and income level. Findings From June, 2006, to October, 2014, 64 countries nationally, four countries subnationally, and 12 overseas territories had implemented HPV immunisation programmes. An estimated 118 million women had been targeted through these programmes, but only 1% were from low-income or lower-middle-income countries. 47 million women (95% CI 39–55 million) received the full course of vaccine, representing a total population coverage of 1·4% (95% CI 1·1–1·6), and 59 million women (48–71 million) had received at least one dose, representing a total population coverage of 1·7% (1·4–2·1). In more developed regions, 33·6% (95% CI 25·9–41·7) of females aged 10–20 years received the full course of vaccine, compared with only 2·7% (1·8–3·6) of females in less developed regions. The impact of the vaccine will be higher in upper-middle-income countries (178 192 averted cases by age 75 years) than in high-income countries (165 033 averted cases), despite the lower number of vaccinated women (13·3 million vs 32·2 million). Interpretation Many women from high-income and upper-middle-income countries have been vaccinated against HPV. However, populations with the highest incidence and mortality of disease remain largely unprotected. Rapid roll-out of the vaccine in low-income and middle-income countries might be the only feasible way to narrow present inequalities in cervical cancer burden and prevention

Reapresentando o folclore : guia ilustrado de animais fantásticos do Brasil

Trabalho de Conclusão de Curso (graduação)—Universidade de Brasília, Instituto de Artes, Departamento de Design, Habilitação em Programação Visual, 2019.Este relatório apresenta todo o processo para o desenvolvimento do projeto gráfico do livro ZOOLOGIA FANTÁSTICA: Guia de criaturas míticas do Brasil, desenvolvido como trabalho de conclusão de curso na disciplina de diplomação em Programação Visual, habilitação do curso de Design da Universidade de Brasília. O projeto consiste no desenvolvimento de uma obra impressa que apresente alguns mitos e lendas do folclore brasileiro para uma faixa-etária entre 15 e 30 anos, público carente de material editorial que aborde a temática folclórica. O projeto foi criado a partir da recepção positiva acerca de dois projetos anteriores, o Guia Brasileiro de Monstros e o Guia Fantástico do Brasil, séries de ilustrações postadas na internet abordando mitos brasileiros. A partir do interesse demonstrado pelo público, esse projeto surgiu como forma de combinar ilustrações e conteúdo textual, revisado e aprimorado, voltado àqueles se mostraram interessados nos dois primeiros guias. Através de metodologias de design, o livro foi desenvolvido de forma a aprimorar todas as características positivas dos projetos anteriores e trazer para o meio editorial um produto que incentive à valorização dos mitos e lendas do folclore brasileiro, bem como motivar os leitores a buscar por outras fontes que complementem o conteúdo presente na obra.This report presents the whole process for the development of the graphic design of the book ZOOLOGIA FANTÁSTICA: Guia de criaturas míticas do Brasil [FANTASTIC ZOOLOGY: Guide to mythical creatures of Brazil], designed as a Bachelor Degree’s Project for the Design major in the University of Brasília. The project consists in the development of a printed work that presents some myths and legends of Brazilian folklore for an age group between 15 and 30 years old, a public lacking editorial material that approaches the folkloric theme. The project was created after the positive reception of two previous projects, the Guia Brasileiro de Monstros [Brazilian Guide of Monsters] and the Guia Fantástico do Brasil [Fantastic Guide of Brazil], series of illustrations about Brazilian myths posted on the internet. Based on the interest shown by the public, this project emerged as a way to combine illustrations and textual content, revised and improved, aimed at those who showed interest in the first two guides. Through design methodologies, the book was developed in order to improve all the positive characteristics of previous projects and to bring to the editorial medium a product that encourages the valorization of the myths and legends of Brazilian folklore, as well as motivate readers to search for other sources that complement the content present in the work

Merging Ligand-Based and Structure-Based Methods in Drug Discovery: An Overview of Combined Virtual Screening Approaches

Virtual screening (VS) is an outstanding cornerstone in the drug discovery pipeline. A variety of computational approaches, which are generally classified as ligand-based (LB) and structure-based (SB) techniques, exploit key structural and physicochemical properties of ligands and targets to enable the screening of virtual libraries in the search of active compounds. Though LB and SB methods have found widespread application in the discovery of novel drug-like candidates, their complementary natures have stimulated continued e orts toward the development of hybrid strategies that combine LB and SB techniques, integrating them in a holistic computational framework that exploits the available information of both ligand and target to enhance the success of drug discovery projects. In this review, we analyze the main strategies and concepts that have emerged in the last years for defining hybrid LB + SB computational schemes in VS studies. Particularly, attention is focused on the combination of molecular similarity and docking, illustrating them with selected applications taken from the literature