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Search Results: 1 - 10 of 15153 matches for " Helena Sofia; Fonseca "
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Boletim de Saúde Infantil e Juvenil: o exame global de saúde dos 11 aos 13 anos (parte II)
Freitas,Cristina; Sousa,Helena Sofia; Fonseca,Helena;
Revista Portuguesa de Clínica Geral , 2011,
Abstract: by the age of 11-13, pubertal changes are associated with the transition to a world of discoveries and the construction of autonomy. having as a basis, the boletim de saúde infantil e juvenil, the authors discuss the most relevant aspects that must be taken into account by the health professional when consulting an adolescent of this age. the most frequent changes encountered in the physical exam are discussed, as well as the correspondent preventive measures and therapeutic approaches. finally, some suggestions are made concerning the global health exam, targeting an improvement in the standard of care of this age group.
Boletim de Saúde Infantil e Juvenil: o exame global de saúde dos 11 aos 13 anos (parte I)
Freitas,Cristina; Sousa,Helena Sofia; Fonseca,Helena;
Revista Portuguesa de Clínica Geral , 2011,
Abstract: by the age of 11-13, pubertal changes are associated with the transition to a world of discoveries and the construction of autonomy. having as a basis the boletim de saúde infantil e juvenil, the authors discuss the most relevant aspects that must be taken into account by the health professional when consulting an adolescent of this age. the clinical interview is conducted based on the heeadsssss acronym. the objective is to assess the adolescent?s life context and understand how her/his cognitive and psychosocial development is being processed.
Viral marketing as epidemiological model
Helena Sofia Rodrigues,Manuel José Fonseca
Computer Science , 2015,
Abstract: In epidemiology, an epidemic is defined as the spread of an infectious disease to a large number of people in a given population within a short period of time. In the marketing context, a message is viral when it is broadly sent and received by the target market through person-to-person transmission. This specific marketing communication strategy is commonly referred as viral marketing. Due to this similarity between an epidemic and the viral marketing process and because the understanding of the critical factors to this communications strategy effectiveness remain largely unknown, the mathematical models in epidemiology are presented in this marketing specific field. In this paper, an epidemiological model SIR (Susceptible- Infected-Recovered) to study the effects of a viral marketing strategy is presented. It is made a comparison between the disease parameters and the marketing application, and simulations using the Matlab software are performed. Finally, some conclusions are given and their marketing implications are exposed: interactions across the parameters are found that appear to suggest some recommendations to marketers, as the profitability of the investment or the need to improve the targeting criteria of the communications campaigns.
Successful control program to implement the appropriate antibiotic prophylaxis for cesarean section
Fonseca, Silvia Nunes Szente;Sofia, Maria Helena;Quintana, Silvana;Nogueira, Fernanda Dos Santos;Levin, Anna S.;
Revista do Instituto de Medicina Tropical de S?o Paulo , 2008, DOI: 10.1590/S0036-46652008000200003
Abstract: objective: describe implementation of a successful program to reduce doses (cefazolin 2 to 1 g) used for antimicrobial prophylaxis. methods: evaluation of an intervention program to reduce prophylactic antimicrobial doses. the intervention included weekly staff discussions, automatic dispensation of 1g-vial of cefazolin by the pharmacy unless expressly requested by surgeon and increase in post-discharge surveillance as a strategy to reassure surgeons of the safety of the reduction. in the pre and post intervention periods, a prospective study of antimicrobial consumption and surgical site infections were measured. results: there were 5,164 and 5,204 deliveries in 2001-2002 and 2003-2004, respectively; 1,524 (29.5%) and 1,363 (26%) were cesarean sections. there was a 45% decrease in cefazolin vials used on average per cesarean section (2.29 to 1.25). patients evaluated increased from 16% to 67% and the ssi rates in both periods were 3.34% to 2.42%, respectively. conclusion: an ample intervention, including administrative and educational measures, led to high compliance with dose reduction and saved more than us$4,000 in cefazolin, considered important because government reimbursement in brazil for cesarean section is $80.
Perturba??es do Comportamento Alimentar na adolescência
Fonseca,Helena;
Revista Portuguesa de Clínica Geral , 2011,
Abstract: the purpose of the present paper is to examine the ways in which the epidemiology and diagnosis, medical complications, nutritional concerns, psychological issues, treatment and outcome for adolescents with eating disorders differ from those of adults, with particular emphasis on prevention and on the medical and developmental issues unique to this period.
Inten??es versus desempenho: o Brasil na política externa portuguesa (1976-2007)
Fonseca, Carmen Sofia;
Revista Brasileira de Política Internacional , 2010, DOI: 10.1590/S0034-73292010000200003
Abstract: the aim of this article is to examine brazil's position in portuguese foreign policy preference, focusing on the principle directions of portuguese foreign policy since april 25th 1974. it focuses on government programs, official visits to brazil, portuguese investment in brazil and the impact of brazilian immigration on portugal. thus, in spite of the transformations required by portugal's democratization, it will try to show that portugal's relation with brazil has subsisted even though it has been with more emphasis on rhetoric and symbolism than consistent practice.
Optimal Control and Numerical Optimization Applied to Epidemiological Models
Helena Sofia Rodrigues
Mathematics , 2014,
Abstract: The relationship between epidemiology, mathematical modeling and computational tools allows to build and test theories on the development and battling of a disease. This PhD thesis is motivated by the study of epidemiological models applied to infectious diseases in an Optimal Control perspective, giving particular relevance to Dengue. Dengue is a subtropical and tropical disease transmitted by mosquitoes, that affects about 100 million people per year and is considered by the World Health Organization a major concern for public health. The mathematical models developed and tested in this work, are based on ordinary differential equations that describe the dynamics underlying the disease, including the interaction between humans and mosquitoes. An analytical study is made related to equilibrium points, their stability and basic reproduction number. The spreading of Dengue can be attenuated through measures to control the transmission vector, such as the use of specific insecticides and educational campaigns. Since the development of a potential vaccine has been a recent global bet, models based on the simulation of a hypothetical vaccination process in a population are proposed. Based on Optimal Control theory, we have analyzed the optimal strategies for using these controls, and respective impact on the reduction/eradication of the disease during an outbreak in the population, considering a bioeconomic approach. The formulated problems are numerically solved using direct and indirect methods. The first discretize the problem turning it into a nonlinear optimization problem. Indirect methods use the Pontryagin Maximum Principle as a necessary condition to find the optimal curve for the respective control. In these two strategies several numerical software packages are used.
Efeito dos ácidos graxos n-3 e n-6 na express?o de genes do metabolismo de lipídeos e risco de aterosclerose
Raposo, Helena Fonseca;
Revista de Nutri??o , 2010, DOI: 10.1590/S1415-52732010000500017
Abstract: atherosclerosis, the main cause of myocardial infarction, stroke, gangrene and other peripheral vascular diseases, also persists as the main cause of morbidity and mortality in western populations. roughly 17.5 million people died from cardiovascular diseases in 2005, representing 30% of the causes of death in that year, and in 2015, another 20 million people will die of cardiovascular diseases around the world. the n-3 fatty acids, especially the long-chain n-3 found in fish, have been shown to be particularly effective in the prevention and treatment of diseases such as dyslipidemias, diabetes mellitus and obesity, presenting an important cardioprotective effect. in this context, studies have found that at least some of the cardiovascular benefits associated with eicosapentaenoic and docosahexaenoic fatty acids regard the modulation of genes that respond to the peroxisome proliferator-activated receptors involved in lipid metabolism. this review will discuss some of the mechanisms of action of some n-3 and n-6 fatty acids on the metabolism of lipids and lipoproteins. in conclusion, many aspects that contribute to the risk of cardiovascular diseases are affected by n-3 intake. n-3 fatty acids not only reduce triglycerides, but also promote factors that increase adiponectin, reduce blood cholesterol levels and improve the reverse cholesterol transport, and all of these contribute to reducing the risk of atherosclerosis. however, additional studies are still necessary to elucidate all the cellular and molecular mechanisms responsible for the cardioprotective effect of n-3 fatty acids.
Dor abdominal e reten??o urinária aguda em adolescente apresenta??o clínica de hematocolpos e revis?o da literatura
Sousa,Helena; Fonseca,Helena; Sampaio,Lurdes;
Nascer e Crescer - Revista do Hospital de Crian?as Maria Pia , 2010,
Abstract: introduction: hematocolpos in adolescents with imperforate hymen resulting from vaginal blood accumulation is a quite rare pathology. case report: a previously healthy almost 14-year-old girl, was admitted to the emergency department with lower abdominal pain and acute urinary retention. no previous menstruation. objective examination with pubertal tanner stage iv, abdominal distension and pelvic mass. gynecological examination revealed a blue imperforate hymen bulging from the vagina introitus outwards. ultrasonography showed exuberant vesical globe and echogenic ?uid accumulation in the vagina. cruciate hymenotomy was un-eventful. asymptomatic in the follow-up, one month later. conclusion: the diagnosis of imperforate hymen and hematocolpos is probable in an adolescent girl with primary amenorrhea, abdominal pain or acute urinary retention. evaluation of the pubertal stage and menses should be included in routine practice.
A MPCC-NLP Approach for an Electric Power Market Problem  [PDF]
Helena Sofia Rodrigues, Maria Teresa Torres Monteiro, António Ismael Freitas Vaz
Smart Grid and Renewable Energy (SGRE) , 2010, DOI: 10.4236/sgre.2010.11009
Abstract: The electric power market is changing-it has passed from a regulated market, where the government of each country had the control of prices, to a deregulated market economy. Each company competes in order to get more cli.e.nts and maximize its profits. This market is represented by a Stackelberg game with two firms, leader and follower, and the leader anticipates the reaction of the follower. The problem is formulated as a Mathematical Program with Complementarity Constraints (MPCC). It is shown that the constraint qualifications usually assumed to prove convergence of standard algorithms fail to hold for MPCC. To circumvent this, a reformulation for a nonlinear problem (NLP) is proposed. Numerical tests using the NEOS server platform are presented.
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