ABSTRACT This paper proposes an integrated control model that enables the pesticide use according to the prey density and the insertion of the natural enemy, the predators, by fuzzy linear programming.The fall armyworm Spodoptera frugiperda (Lepidoptera: Noctuidae) is one of the main resistant pests of corn, which can cause damage to the productivity up to 34%. The control is strictly chemical. enemy predators programmingThe programming Lepidoptera (Lepidoptera Noctuidae corn 34 34% chemical 3

ABSTRACT Objective of this paper is the formation and optimization of investment portfolios with shares traded on B3 and based on the theory of diversification of the Markowitz model and on Quadratic Programming. The minimization of the portfolio risk was considered by the Downside Risk system, modeled and implemented computationally. The data collection period began in 2020, the year in which there was a global economic crisis due to the Sars-CoV-2 pandemic and consequent isolation measures that profoundly affected the economy. Three portfolios were formed that performed between January 2021 and March 2022 and showed better-than-expected results compared to the percentage change in the Ibovespa. B Programming system computationally 2020 SarsCoV2 SarsCoV Sars CoV 2 Sars-CoV- economy 202 betterthanexpected better than expected Ibovespa Sars-CoV 20

RESUMO O objetivo desse artigo é a formação e a otimização de carteiras de investimento com ações negociadas na B3 e baseada na teoria de diversificação do modelo de Markowitz e na Programação Quadrática. Considerou-se a minimização do risco da carteira pelo sistema Downside Risk, modelado e implementado computacionalmente. O período de coleta de dados iniciou-se em 2020, ano em que houve uma crise econômica mundial em razão da pandemia da Sars-CoV-2 e consequentes medidas de isolamento que afetaram profundamente a economia. Foram formadas três carteiras que performaram entre Janeiro de 2021 a Março de 2022 e mostraram resultados acima do esperado em comparação à variação percentual do Ibovespa. B Quadrática Considerouse Considerou se Risk computacionalmente iniciouse iniciou 2020 SarsCoV2 SarsCoV Sars CoV 2 Sars-CoV- economia 202 Ibovespa Sars-CoV 20

RESUMO. Os métodos de pontos interiores primais-duais foram utilizados para o problema de minimização do custo de operação do pré-despacho DC de um sistema de potência hidroelétrico e hidrotérmico onde ocorrem adicionalmente manobras programadas e restrições de rampa. Com a variação da demanda, se faz necessário realizar algumas manobras programadas para manutenção de geradores e para adaptar a rede de transmissão a esta carga possibilitando atendê-la com eficiência e mantendo o sistema estável. As usinas termoelétricas, por sua vez, apresentam restrições de rampa, pois necessitam de um determinado tempo tanto para aumentar quanto para reduzir sua produção de energia. A consideração de manobras e restrições adicionais aproxima o modelo do problema de pré-despacho do sistema brasileiro de acordo com o Operador Nacional do Sistema.

ABSTRACT The primal-dual interior point methods will be used for the problem of loss minimization in the generation predispatch of a hydroelectric and hydrothermal power system where further programmed maneuvers and ramp restrictions occur. With the variation of demand, it is necessary to carry out some scheduled maintenance for generators and to adapt the transmission network to this load, enabling it to efficiently and keeping the system stable. The thermoelectric plants, in turn, present ramp restrictions, since they need a certain time to increase as well as to reduce their energy production. The consideration of additional maneuvers and restrictions approximates the model of the predispatch problem of the Brazilian system according to the National System Operator.

Injuries caused by venomous snakes are considered a problem of public health in Brazil, and further studies for a better knowledge are very important. The aim of this work is to describe clinical and epidemiological characteristics that were observed from 1995 to 2000 in the Hospital for Tropical Diseases of Araguaína, Tocantins State, Brazil, which is a unit of health that takes care of patients suffering from tropical diseases. We studied 440 individuals and the most common characteristics observed were masculine sex, age among 15-45 years, bite in low members, and injuries caused by snakes of the Bothrops genus. The signs and symptoms more frequently observed were edema, pain, erythema, and bleeding. The most observed systemic manifestation was alteration of blood coagulation. The most frequent complications were abscess, necrosis, bacterial infection, and renal failure. The mortality rate was 3%. These data are very important for the evaluation of the problem.

O presente estudo trata da análise fitossociológica de uma área de pastagem localizada no Município de Vassouras, Estado do Rio de Janeiro, e é parte de um projeto que vem sendo desenvolvido por docentes do Instituto de Biologia da UFRRJ sobre Biologia e Ecologia de Hemípteros do gênero Dysdercus. Na área foram estabelecidos quadrados de 1 m2, dos quais se obtiveram dados de freqüência, densidade e dominância. A somatória dos valores relativos destes dados fornece o IVI (índice de Valor de Importância). As gramíneas que formam a pastagem quando somadas atingem 114,90 IVI. Todas as gramíneas atingem 161,18 IVI. As espécies de gramíneas que são biologicamente infestantes do pasto podem ser consideradas como forrageiras associadas. Wedelia paludosa DC. é a espécie de dicotiledonea de mais alto IVI = 22,65. Esta espécie, nos meses de elevadas pluviosidade e temperatura, associadas a um pastoreio intenso das forrageiras, desenvolve-se cobrindo parcialmente o pasto. Embora na área tenham sido encontradas 27 famílias com 67 espécies, apenas 37 estão representadas nos quadrados, as outras podendo ser consideradas esporádicas na comunidade.

A pasture field in Vassouras, State of Rio de Janeiro, was analysed from the viewpoint of plant sociology. This study is partt of a project being developed by several professors from the Institute of Biology of UFRRJ on the Biology and Ecology of Hemiptera of the genus Dysdercus. Quadrats of one square meter were located in the fie ld and for each one, data of frequency, density and dominance were collected. The sum of the relative value of this data produces the IVI (Importance Value Index). The grasses making up the pasture added up to 114,9 IVI. All grasses summed up gave an IVI of 161,18, grass species infesting the pasture were considered associated forage plants. Wedelia paludosa DC. is the species of Dicotyledoneae with the highest IVI = 22,65. During the high temperatures and rainfall months, associated with intense grazing of the forage plants, this species can develop until it partially covers the field. Although 27 families and 67 species were counted in the pasture field, only 37 are represented in the quadrats; the others were considered sporadic in the community.