19 research outputs found
Operational Research IO2017, Valença, Portugal, June 28-30
This proceedings book presents selected contributions from the XVIII Congress of APDIO (the Portuguese Association of Operational Research) held in Valença on June 28–30, 2017. Prepared by leading Portuguese and international researchers in the field of operations research, it covers a wide range of complex real-world applications of operations research methods using recent theoretical techniques, in order to narrow the gap between academic research and practical applications. Of particular interest are the applications of, nonlinear and mixed-integer programming, data envelopment analysis, clustering techniques, hybrid heuristics, supply chain management, and lot sizing and job scheduling problems. In most chapters, the problems, methods and methodologies described are complemented by supporting figures, tables and algorithms.
The XVIII Congress of APDIO marked the 18th installment of the regular biannual meetings of APDIO – the Portuguese Association of Operational Research. The meetings bring together researchers, scholars and practitioners, as well as MSc and PhD students, working in the field of operations research to present and discuss their latest works. The main theme of the latest meeting was Operational Research Pro Bono. Given the breadth of topics covered, the book offers a valuable resource for all researchers, students and practitioners interested in the latest trends in this field.info:eu-repo/semantics/publishedVersio
III Congresso Ibero-Americano de Empreendedorismo, Energia, Ambiente e Tecnologia: livro de atas
O III Congresso Ibero-Americano de Empreendedorismo, Energia,
Ambiente e Tecnologia (CIEEMAT), dá continuidade ao trabalho desenvolvido no
Brasil pelo Centro Federal de Educação Tecnológica Celso Suckow da Fonseca – Rio de
Janeiro, atravessando o oceano Atlântico para a sua primeira edição no contexto da
Península Ibérica.
Concebido para englobar um conjunto abrangente de áreas temáticas, este evento
serve de ponto de encontro entre profissionais, investigadores, professores e
estudantes dos países Ibero-Americanos, num fórum que reforça o perfil internacional
do Instituto Politécnico de Bragança, assim como das demais Instituições
Organizadoras e Parceiras, designadamente, no âmbito de Programas de Dupla
Diplomação.
Nos três dias do evento, esperamos que encontrem oportunidades para a partilha de
ideias e resultados de investigação, reforçando ou estabelecendo novos contactos e
parcerias no espaço Latino-Americano.
Por fim, espero que a Vossa estadia em Bragança seja agradável e que levem de volta
gratas recordações do CIEEMAT 2017.info:eu-repo/semantics/publishedVersio
Association of respiratory symptoms and lung function with occupation in the multinational Burden of Obstructive Lung Disease (BOLD) study
Background
Chronic obstructive pulmonary disease has been associated with exposures in the workplace. We aimed to assess the association of respiratory symptoms and lung function with occupation in the Burden of Obstructive Lung Disease study.
Methods
We analysed cross-sectional data from 28 823 adults (≥40 years) in 34 countries. We considered 11 occupations and grouped them by likelihood of exposure to organic dusts, inorganic dusts and fumes. The association of chronic cough, chronic phlegm, wheeze, dyspnoea, forced vital capacity (FVC) and forced expiratory volume in 1 s (FEV1)/FVC with occupation was assessed, per study site, using multivariable regression. These estimates were then meta-analysed. Sensitivity analyses explored differences between sexes and gross national income.
Results
Overall, working in settings with potentially high exposure to dusts or fumes was associated with respiratory symptoms but not lung function differences. The most common occupation was farming. Compared to people not working in any of the 11 considered occupations, those who were farmers for ≥20 years were more likely to have chronic cough (OR 1.52, 95% CI 1.19–1.94), wheeze (OR 1.37, 95% CI 1.16–1.63) and dyspnoea (OR 1.83, 95% CI 1.53–2.20), but not lower FVC (β=0.02 L, 95% CI −0.02–0.06 L) or lower FEV1/FVC (β=0.04%, 95% CI −0.49–0.58%). Some findings differed by sex and gross national income.
Conclusion
At a population level, the occupational exposures considered in this study do not appear to be major determinants of differences in lung function, although they are associated with more respiratory symptoms. Because not all work settings were included in this study, respiratory surveillance should still be encouraged among high-risk dusty and fume job workers, especially in low- and middle-income countries.publishedVersio
Cohort Profile: Burden of Obstructive Lung Disease (BOLD) study
The Burden of Obstructive Lung Disease (BOLD) study was established to assess the prevalence of chronic airflow obstruction, a key characteristic of chronic obstructive pulmonary disease, and its risk factors in adults (≥40 years) from general populations across the world.
The baseline study was conducted between 2003 and 2016, in 41 sites across Africa, Asia, Europe, North America, the Caribbean and Oceania, and collected high-quality pre- and post-bronchodilator spirometry from 28 828 participants.
The follow-up study was conducted between 2019 and 2021, in 18 sites across Africa, Asia, Europe and the Caribbean. At baseline, there were in these sites 12 502 participants with high-quality spirometry. A total of 6452 were followed up, with 5936 completing the study core questionnaire. Of these, 4044 also provided high-quality pre- and post-bronchodilator spirometry.
On both occasions, the core questionnaire covered information on respiratory symptoms, doctor diagnoses, health care use, medication use and ealth status, as well as potential risk factors. Information on occupation, environmental exposures and diet was also collected
ESCOLEX: a grade-level lexical database from European Portuguese elementary to middle school textbooks
In this article, we introduce ESCOLEX, the first
European Portuguese children’s lexical database with gradelevel-
adjusted word frequency statistics. Computed froma 3.2-
million-word corpus, ESCOLEX provides 48,381 word forms
extracted from 171 elementary and middle school textbooks
for 6- to 11-year-old children attending the first six grades in
the Portuguese educational system. Like other children’s
grade-level databases (e.g., Carroll, Davies, & Richman,
1971; Corral, Ferrero, & Goikoetxea, Behavior Research
Methods, 41, 1009–1017, 2009; Lété, Sprenger-Charolles, &
Colé, Behavior ResearchMethods, Instruments,&Computers,
36, 156–166, 2004; Zeno, Ivens, Millard, Duvvuri, 1995),
ESCOLEX provides four frequency indices for each grade:
overall word frequency (F), index of dispersion across the
selected textbooks (D), estimated frequency per million words
(U), and standard frequency index (SFI). It also provides a new
measure, contextual diversity (CD). In addition, the number of
letters in the word and its part(s) of speech, number of syllables,
syllable structure, and adult frequencies taken from PPAL
(a European Portuguese corpus-based lexical database;
Soares, Comesaña, Iriarte, Almeida, Simões, Costa, …,
Machado, 2010; Soares, Iriarte, Almeida, Simões, Costa,
França,…, Comesaña, in press) are provided. ESCOLEX will
be a useful tool both for researchers interested in language
processing and development and for professionals in need of
verbal materials adjusted to children’s developmental stages.
ESCOLEX can be downloaded along with this article or from
http://p-pal.di.uminho.pt/about/databases.Fundação para a Ciência e a Tecnologia (FCT