An Iterative Cyclic Algorithm for Designing Vaccine Distribution Networks in Low and Middle-Income Countries

The World Health Organization's Expanded Programme on Immunization (WHO-EPI) was developed to ensure that all children have access to common childhood vaccinations. Unfortunately, because of inefficient distribution networks and cost constraints, millions of children in many low and middle-income countries still go without being vaccinated. In this paper, we formulate a mathematical programming model for the design of a typical WHO-EPI network with the goal of minimizing costs while providing the opportunity for universal coverage. Since it is only possible to solve small versions of the model optimally, we describe an iterative heuristic that cycles between solving restrictions of the original problem and show that it can find very good solutions in reasonable time for larger problems that are not directly solvable.Comment: International Joint Conference on Industrial Engineering and Operations Management- ABEPRO-ADINGOR-IISE-AIM-ASEM (IJCIEOM 2019). Novi Sad, Serbia, July 15-17t

Light-front quark distributions in the nucleon and nucleon electromagnetic form factors

Longitudinal and transverse quark momentum distributions in the nucleon are calculated from a phenomenological quark-nucleon vertex function obtained through an investigation of the nucleon electromagnetic form factors within a light-front framework.Comment: 6 pages, 11 figs. proceedings of LC2009, to appear in Nucl. Phys.

When Politicians Talk About Politics: Identifying Political Tweets of Brazilian Congressmen

Since June 2013, when Brazil faced the largest and most significant mass protests in a generation, a political crisis is in course. In midst of this crisis, Brazilian politicians use social media to communicate with the electorate in order to retain or to grow their political capital. The problem is that many controversial topics are in course and deputies may prefer to avoid such themes in their messages. To characterize this behavior, we propose a method to accurately identify political and non-political tweets independently of the deputy who posted it and of the time it was posted. Moreover, we collected tweets of all congressmen who were active on Twitter and worked in the Brazilian parliament from October 2013 to October 2017. To evaluate our method, we used word clouds and a topic model to identify the main political and non-political latent topics in parliamentarian tweets. Both results indicate that our proposal is able to accurately distinguish political from non-political tweets. Moreover, our analyses revealed a striking fact: more than half of the messages posted by Brazilian deputies are non-political.Comment: 4 pages, 7 figures, 2 table

The hidden prosumer: consumer-citizens participation in the invisible economy of advertising

Este artigo foca a participação do prosumidor - enquanto produtor e consumidor-cidadão – na publicidade e as suas implicações na construção dos conteúdo e dos públicos publicitários, formatando a indústria, produtos e perfis de consumo e a ecologia dos meios de comunicação. Com base na definição de prosumidor de Alvin Toffler, a dupla condição do indivíduo como produtor e consumidor, e sua designação da chamada economia invisível, analisaremos como a indústria da publicidade enfrenta os desafios colocados por esta participação, incorporando contribuições de prosumidores, como fonte de capital criativo e ferramentas operacionais. Além disso, discutiremos como a interação entre prosumidores e média, especialmente a publicidade, denota um empowerment paradoxal: os prosumidores co-criadores conquistam a sua própria voz na esfera pública, influenciando o conteúdo e ganhando poder de edição sobre a sua substância; mas porque são também são consumidores dos média, isto é, audiência, os prosumidores constroem valor mediático para a publicidade tornando-se parte dos produtos destinados ao consumo. Refletindo além da co-criação sobre a participação below-the-line, menos visível, enuncia-se ainda seu o potencial de cidadania, como meio de construir e influenciar a paisagem quotidiana

What’s in a place? The contribution of strategic communication to placemaking and territorial communication

Set in the field of territorial communication, the aim of this chapter is to summon the various contributions of strategic communication to placemaking and promotion, approaching them both through a mind frame path, as a multi-layered concept, and through an operational approach, as a pragmatic tool. Going through a number of examples we will reflect on several experiences to illustrate the potential of strategic communication to add value to places in different sets and scales, from building a place almost from scratch to nation branding strategies, from positioning and re-positioning objectives to building up notoriety or developing communities’ sense of belonging to a territory. We also set an evolutionary frame of the territorial communication in the light of its strategic dimension, drawing on key concepts and trends, influences and achievements. The performative value of strategic communication as a constructive tool of territorial development is discussed in addition to the communicational added value of territorial brands, namely by pointing emerging issues such as storytelling or participatory place communication. Furthermore, we summon ethical and pragmatic challenges to the debate as inspiration for future research.This work is supported by national funds through FCT – Fundação para a Ciência e a Tecnologia, I.P., under the project UIDB/00736/2020

Timelike and spacelike hadron form factors, Fock state components and light-front dynamics

A unified description of spacelike and timelike hadron form factors within a light-front model was successfully applied to the pion. The model is extended to the nucleon to study the role of $q \bar q$ pair production and of nonvalence components in the nucleon form factors. Preliminary results in the spacelike range $0 \le Q^2 \le 10 ~ (GeV/c)^2$ are presented.Comment: 4 pages, espcrc1.sty. proceedings of FB XVIII (August 2006, Brazil), to be published in Nucl. Phys.

Electromagnetic Hadron Form Factors and Higher Fock Components

Investigation of the spacelike and timelike electromagnetic form factors of hadrons, within a relativistic microscopical model characterized by a small set of hypothesis, could shed light on the components of hadron states beyond the valence one. Our relativistic approach has been successfully applied first to the pion and then the extension to the nucleon has been undertaken. The pion case is shortly reviewed as an illustrative example for introducing the main ingredients of our approach, and preliminary results for the nucleon in the spacelike range $-10 (GeV/c)^2\le q^2 \le 0$ are evaluated.Comment: 8 pages, 6 figs, espcrc1.sty included. Proceedings of Fifth International Conference on Perspectives In Hadronic Physics, ICTP, May 22-26, 200

Electromagnetic form factors of the nucleon in spacelike and timelike regions

An approach for a unified description of the nucleon electromagnetic form factors in spacelike and timelike regions is presented. The main ingredients of our model are: $i)$ a Mandelstam formula for the matrix elements of the nucleon electromagnetic current; $ii)$ a 3-dimensional reduction of the problem on the Light-Front performed within the so-called {\tt Propagator Pole Approximation} ({\bf PPA}), which consists in disregarding the analytical structure of the Bethe-Salpeter amplitudes and of the quark-photon vertex function in the integration over the minus components of the quark momenta; $iii)$ a dressed photon vertex in the $q\bar{q}$ channel, where the photon is described by its spin-1, hadronic component.Comment: 8 pages, 9 figs., macro added. Proceedings of the XI Conf. on Problems in Theoretical Nuclear Physics, Cortona, Oct. 11-14, 200

Obsessive-Compulsive Disorder and Attachment

Introdução: A teoria da vinculação pretende explicar de que forma as disposições biológicas e as experiências precoces predispõem o indivíduo à saúde mental ou à patologia. Objetivos: Reportar um caso de Perturbação Obsessivo-Compulsiva num jovem com padrão de vinculação ansiosa, realizando uma revisão da literatura sobre a associação entre as duas entidades. Métodos: É apresentado um caso clínico de um jovem com Perturbação Obsessivo-Compulsiva com Perturbação de Ingestão Alimentar/Restritiva e de Ansiedade Generalizada comórbidas. O Questionário de Vinculação ao Pai e à Mãe foi aplicado para avaliar o estilo de vinculação. Uma análise bibliográfica sobre o tema foi realizada, evidenciado a contribuição dos processos de vinculação, a abordagem e o tratamento. Resultados: O Questionário de Vinculação ao Pai e à Mãe evidenciou uma vinculação ansiosa no jovem. Conclusões: O presente caso pode ilustrar como um padrão ansioso de vinculação poderá ter influenciado o subsequente desenvolvimento de psicopatologia. Uma abordagem psicofarmacológica, a par da psicoterapêutica envolvendo doente e cuidadores, parece ser a mais adequada tendo-se revelado eficaz neste caso.info:eu-repo/semantics/publishedVersio