24 research outputs found

    Generic Pareto local search metaheuristic for optimization of targeted offers in a bi-objective direct marketing campaign

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    Cross-selling campaigns seek to offer the right products to the set of customers with the goal of maximizing expected profit, while, at the same time, respecting the purchasing constraints set by investors. In this context, a bi-objective version of this NP-Hard problem is approached in this paper, aiming at maximizing both the promotion campaign total profit and the risk-adjusted return, which is estimated with the reward-to-variability ratio known as Sharpe ratio. Given the combinatorial nature of the problem and the large volume of data, heuristic methods are the most common used techniques. A Greedy Randomized Neighborhood Structure is also designed, including the characteristics of a neighborhood exploration strategy together with a Greedy Randomized Constructive technique, which is embedded in a multi-objective local search metaheuristic. The latter combines the power of neighborhood exploration by using a Pareto Local Search with Variable Neighborhood Search. Sets of non-dominated solutions obtained by the proposed method are described and analyzed for a number of problem instances

    Registros novos e adicionais de Agalliinae, Gyponinae e Nirvaniinae (Homoptera: Cicadellidae) para o Estado de Minas Gerais, Brasil

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    Coelho LBN, Da-Silva ER, Ferreira PSF. 2001. Registros novos e adicionais de Agalliinae, Gyponinae e Nirvaniinae (Homoptera: Cicadellidae) para o Estado de Minas Gerais, Brasil. Entomotropica 16(2):131-135 . Agallia alvarengai , A. configurata, A. cucata, Agalliopsis ornaticollis (Agalliinae), Curtara antica , C. atomaria, Gypona validana , Hecalapona ferosa (Gyponinae) e Neonirvana hyalina (Nirvaniinae) s\ue3o pela primeira vez registradas para o Estado de Minas Gerais, Brasil. Agallia albidula , A. cezia (Agalliinae) e Acuera gloma (Gyponinae) s\ue3o pela primeira vez registradas para o munic\uedpio de Vi\ue7osa.Coelho LBN, Da-Silva ER, Ferreira PSF. 2001. New and additional records of Agalliinae, Gyponinae e Nirvaniinae (Homoptera: Cicadellidae) from State of Minas Gerais, Brazil. Entomotropica 16(2):131-135. Agallia alvarengai , A. configurata, A. cucata, Agalliopsis ornaticollis (Agalliinae), Curtara antica , C. atomaria, Gypona validana , Hecalapona ferosa (Gyponinae) and Neonirvana hyalina (Nirvaniinae) are for the first time recorded from Minas Gerais State, Brazil. Agallia albidula , A. cezia (Agalliinae) and Acuera gloma (Gyponinae) are for the first time recorded from the county of Vi\ue7osa

    Diving into the vertical dimension of elasmobranch movement ecology

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    Knowledge of the three-dimensional movement patterns of elasmobranchs is vital to understand their ecological roles and exposure to anthropogenic pressures. To date, comparative studies among species at global scales have mostly focused on horizontal movements. Our study addresses the knowledge gap of vertical movements by compiling the first global synthesis of vertical habitat use by elasmobranchs from data obtained by deployment of 989 biotelemetry tags on 38 elasmobranch species. Elasmobranchs displayed high intra- and interspecific variability in vertical movement patterns. Substantial vertical overlap was observed for many epipelagic elasmobranchs, indicating an increased likelihood to display spatial overlap, biologically interact, and share similar risk to anthropogenic threats that vary on a vertical gradient. We highlight the critical next steps toward incorporating vertical movement into global management and monitoring strategies for elasmobranchs, emphasizing the need to address geographic and taxonomic biases in deployments and to concurrently consider both horizontal and vertical movements

    Suplementação de lisina e metionina em associação ou não com o óleo de soja na dieta de vacas leiteiras

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    O objetivo do estudo foi avaliar a suplementação de lisina e metionina em associação ou não ao óleo de soja na dieta de vacas leiteiras e seus efeitos sobre a produção e a composição do leite. Doze vacas Holandesas foram distribuídas em quadrado latino 4x4, com as dietas O+LM (dieta acrescida de óleo de soja, lisina e metionina misturados na dieta total), OLM (dieta com o complexo óleo de soja/lisina e metionina fornecido separadamente da dieta total), OS (dieta acrescida de óleo de soja fornecido separadamente da dieta total) e LM (dieta acrescida de lisina e metionina fornecidos separadamente da dieta total). A produção de leite, a de proteína e a de gordura não foram afetadas pela adição de lisina e metionina associadas ou não com óleo de soja. O percentual de gordura do leite, a produção de leite corrigida para 3,5% de gordura e a produção de leite corrigida para sólidos totais reduziram-se com a adição de óleo de soja na dieta. O percentual de proteína aumentou 0,14% (p<0,05) com a adição de óleo na presença de lisina e metionina na dieta. Os resultados sugerem efeito protetor do complexo óleo/lisina e metionina da degradação ruminal na condição experimental proposta

    Redescri\ue7\ue3o do macho e descri\ue7\ue3o da f\ueamea de Gypona reversa DeLong e Martinson, 1972 (Homoptera: Cicadellidae: Gyponinae)

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    Coelho LBN, Da-Silva ER, Ferreira PSF. 2001. Redescription of the male and description of the female of Gypona reversa DeLong and Martinson 1972 (Homoptera, Cicadellidae, Gyponinae). Entomotropica 16(2):127-129. The redescription of the male and the first description of the female of Gypona reversa DeLong and Martinson 1972 are presented, based on specimens from Vi\ue7osa, state of Minas Gerais, Brazil. This species seems to be more closely related to G. gilba DeLong and Martinson 1972.Coelho LBN, Da-Silva ER, Ferreira PSF. 2001. Redescri\ue7\ue3o do macho e descri\ue7\ue3o da f\ueamea de Gypona reversa DeLong e Martinson, 1972 (Homoptera: Cicadellidae: Gyponinae). Entomotropica 16(2):127-129. \uc9 apresentada a redescri\ue7\ue3o do macho e a primeira descri\ue7\ue3o da f\ueamea de Gypona reversa DeLong e Martinson 1972, com base em exemplares procedentes de Vi\ue7osa, Minas Gerais, Brasil. A esp\uc9cie aparenta ser mais proximamente relacionada \ue0 G. gilba DeLong e Martinson 1972

    Efeitos da adição de monensina ou propilenoglicol à polpa cítrica sobre a cinética de degradação dos carboidratos totais e da produção cumulativa de gases in vitro Effects of adding monensin or propylene glycol to citrus pulp on the degradability of total carbohydrates and in vitro cumulative gas production

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    Avaliaram-se os efeitos da adição de propilenoglicol e/ou monensina sobre a degradabilidade média e efetiva dos carboidratos totais, pH e produção cumulativa de gases da polpa cítrica por meio da técnica in vitro semi-automática de produção de gases. Os tratamentos constituíram-se de polpa cítrica (PC); associada ao propilenoglicol (PC+PG); monensina (PC+MO); propilenoglicol e monensina (PC+PG+MO), avaliados com duas, quatro, seis, 12, 24, 48 e 96 horas. A degradabilidade efetiva dos carboidratos totais de PC+PG foi maior em todas as taxas de passagem estudadas. A produção cumulativa de gases e a degradação dos carboidratos totais apresentaram correlação elevada, variando de 92 a 97% (PThe effects of propylene glycol and/or monensin on the total carbohydrate degradations, pH, and cumulative gas production of citrus pulp using the semi-automated in vitro gas production technique were evaluated. The treatments were constituted of citrus pulp (CP); CP plus propylene glycol (CP+PG); CP plus monensin (CP+MO), and CP plus propylene glycol and monensin (CP+PG+MO), which were evaluated at two, four, six, 12, 24, 48, and 96 hours. The addition of propylene glycol to the citrus pulp resulted in the highest (76.7; 63.9; and 56.5% for rates of passage 0.02; 0.05 and 0.08%/h, respectively) total carbohydrates degradability. Cumulative gas production and degradation of total carbohydrates were highly correlated (92 to 97%, P<0.01). The pH was inversely correlated to degradability of total carbohydrates (r= -0.79, P<0.01). Propylene glycol showed higher effective degradation of total carbohydrate and may be a good additive to be used associated to the citrus pulp
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