1,126 research outputs found

    Towards Sustainable Development of Small-Scale Fisheries in the Philippines: Experiences and Lessons Learned from Eight Regional Sites

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    The focus of this paper is on the governance of small-scale or municipal fisheries in the Philippines in light of the critical role they play in the livelihoods of coastal communities and in the nation as a whole. The information and insights presented in this lessons learned brief derive from the project entitled Strengthening Governance and Sustainability of Small-Scale Fisheries Management in the Philippines: An Ecosystem Approach. The project was funded principally by the Department of Agriculture's Bureau of Agricultural Research (DA-BAR), and implemented from 2008 to 2011 by WorldFish in collaboration with the Department of Science and Technology (DOST) and selected partners. The underlying project's goal was to 'strengthen governance and sustainability of small-scale fisheries management in the Philippines.' There were a variety of objectives spread across two project phases but the primary objectives relevant to this brief include: (1) identifying issues at project sites and assessing potential for an ecosystem based approach to fisheries management, and (2) assessing current fisheries management practices at different levels of governance and identifying best practices. The purposes of this paper are twofold. First, it aims to provide brief highlights of the project findings; second, it aims to present the lessons learned in project implementation covering substantive sectoral concerns as well as methodological issues. It wraps up with some strategic directions that need to be undertaken to reverse the deteriorating conditions of small-scale fisheries (SSF) while at the same time promoting their sustainable development

    Cauchy's residue theorem for a class of real valued functions

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    Let [a,b][a,b] be an interval in R\mathbb{R} and let FF be a real valued function defined at the endpoints of [a,b][a,b] and with a certain number of discontinuities within [a,b][a,b] . Having assumed FF to be differentiable on a set [a,b]\E[a,b] \backslash E to the derivative ff, where EE is a subset of [a,b][a,b] at whose points FF can take values ±\pm \infty or not be defined at all, we adopt the convention that FF and ff are equal to 0 at all points of EE and show that KHvtabf=F(b)F(a)\mathcal{KH-}vt\int_{a}^{b}f=F(b) -F(a)%, where KH\mathcal{KH-} vtvt denotes the total value of the \textit{% Kurzweil-Henstock} integral. The paper ends with a few examples that illustrate the theory.Comment: 6 page

    Diverse Picturebooks for Diverse Children: The Others in Singapore Teachers’ Discourse and Pedagogy

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    This study investigates how teachers construct the Others in their use of diverse picturebooks for diverse children. Data from open-ended learning prompts and focus group discussions with in-service teachers in Singapore reveal their conflicted discourse and practice in relation to using diverse picturebooks in the classroom to promote inclusive education. On the one hand, the teachers navigate their way around an “awareness of Others” but, on the other hand, they also express discomfort toward an expanded definition of “multiculturalism” and “diversity” in a relatively tightly controlled educational context. This paper aims to bring to the surface the multifaceted nature of teachers' newly found openness to broader and more inclusive notions of Others, which is conflicted but also actively compartmentalizes different discourses in order to make inclusive classroom practice possible

    Evaluation of initial growth of poplar clones in North Patagonia

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    En los valles irrigados de Río Negro y Neuquén, el cultivo de álamos acompañó históricamente la producción agrícola, utilizándose clones de Populus nigra L. en cortinas rompeviento y clones de Populus xcanadensis Moench. para las forestaciones en macizo. Buscando ampliar la disponibilidad de genotipos para los diferentes sitios de cultivo, se instaló un ensayo comparativo con trece clones de álamo en la localidad de Pomona, Provincia de Río Negro. Se evaluaron seis clones de P. xcanadensis ('Triplo', 'Ragonese 22 INTA', "Pangui INTA", "Pudú INTA", y los testigos comerciales 'Conti 12' e 'I-214'), seis clones de P. deltoides ('Harvard', 'Onda', 'Stoneville 67', 'Carabelas INTA', "20-82" y "C-657") y un clon de P. xcanescens. Se utilizó un diseño experimental de bloques completos al azar (DBCA) con quince repeticiones y parcelas de una planta. Luego de cuatro períodos de crecimiento, 'I-214' y 'Triplo' tuvieron los mayores incrementos de DAP, no encontrándose diferencias significativas con los valores de 'Conti 12', 'Ragonese 22 INTA', "Pangui INTA", "Pudú INTA", "20-82" y P. xcanescens. Los menores crecimientos fueron observados en los deltoides 'Stoneville 67' y "C- 657". Los clones 'Ragonese 22 INTA', 'Triplo' y "20-82" constituyen alternativas para el cultivo de álamos en macizos y cortinas rompeviento.In the irrigated valleys of Río Negro and Neuquén poplar cultivation historically accompanied agricultural production using clones of Populus nigra L. in shelterbelts and Populus xcanadensis Moench. in forest plantations. With the aim to extend the availability of genotypes for different cultivation sites, a comparative trial with thirteen clones of poplar was installed at Pomona, Río Negro province. Six clones of euramerican hybrid poplar (P. xcanadensis 'Triplo', 'Ragonese 22 INTA', "Pangui INTA", "Pudú INTA" and commercial control 'Conti 12' and 'I-214'), six clones of eastern cottonwood poplar (P. deltoides 'Harvard', 'Onda', 'Stoneville 67', 'Carabelas INTA', "20-82" and "C-657") and one clone of P. xcanescens were evaluated. A completely randomized block design was used with fifteen replications and one plant per plot. After four growth periods, 'I-214' and 'Triplo' had the largest increases of diameter at breast height (DBH) while no significant differences in the values of 'Conti 12', 'Ragonese 22 INTA', "Pangui INTA", "Pudú INTA", "20-82" and P. xcanescens were found. The lowest increases were observed in deltoids 'Stoneville 67' and "C- 657". 'Ragonese 22 INTA', 'Triplo' and "20- 82" are alternatives for growing poplar in forest plantations and shelterbelt.Fil: Thomas, Esteban R.. Instituto Nacional de Tecnología Agropecuaria (Argentina)Fil: Garces, Anibal C.

    Modificaciones fisarias en el conejo inducidas por campos electromagnéticos

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    Se efectúa un estudio experimental para valorar los efectos de campos electromagnéticos de dos intensidades diferentes (2,4 y 10 Gauss) sobre la fisis de huesos largos. Se emplearon 45 conejos de 4 semanas divididos en tres grupos de 15 animales, a los que se colocó unas bobinas de Helmholtz en la rodilla derecha durante ocho horas diarias. Cinco animales de cada grupo fueron estimulados (subgrupo testigo). El primer grupo se sacrificó tras cuatro semanas, el segundo tras 12 semanas y el tercero llevó las bovinas durante 12 semanas y luego se sacrificó 12 semanas después para comprobar la duración de los efectos de la corriente. Los resultados demuestran que la diferencia en longitud entre los huesos estimulados y sus contralaterales fue mayor en el subgrupo sometido a 10 Gauss, aunque en ningún caso superior al 2,5%. La altura fisaria fue mayor en los huesos estimulados que en sus contralaterals, aunque no se apreciaron otras diferencias histológicas. No obstante, el cierre de la fisis se retrasó en todos los huesos estimulados con 10 Gauss y evolucionó normalmente en el resto. Los huesos de los subgrupos testigo no mostraron diferencias entre ellos.This study was carried out to compare the effects of two different electromagnetic fields (2,4 and 10 Gauss) on the growth plate of long bones. Forty five 4-week-old rabbits were divided in three groups of 15 animals each. All of them wore two Helmholtz coils on their right knee for 8 hours daily and then were sacrificed, the first after for 4 weeks, the second one after 12 weeks and the third one after 24 weeks. In this last group the coils were removed after 12 weeks and the animals allowed to live other 12 weeks to study the evolution of the growth plate after cesation of the stimulation. In each group, animals were not stimulated (sham subgroup). Results showed a greater difference in length in those bones stimulated with 10 Gauss, in respect to their contralateral, than the other subgroups. However these differences were less than 2,5% of the total length of the bone. Growth plate height of stimulated bones was greater than their contralateral in all subgroups with no other remarkable histological differences. Closure of the growth plate was delayed in the 10 Gauss stimulated bones but not in the rest. No differences were found among bones of sham subgroups at any time

    Crop-based irrigation operations in the North West Frontier Province of Pakistan. Vol.II: Research approach and interpretation. Final Report

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    Irrigation management / Crop-based irrigation / Research / Irrigation canals / Water demand / Performance evaluation / Agricultural production / Pakistan / North West Frontier Province

    Estudio comparativo de dos métodos de radiografías forzadas para detectar la insuficiencia del ligamento cruzado anterior

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    En 32 pacientes con rotura unilateral de ligamento cruzado anterior (LCA) comprobada mediante artroscopia se efectuó previamente una radiografía forzada de ambas rodillas para estudiar el desplazamiento anterior de la tibia. Cada paciente fue estudiado mediante dos métodos diferentes, Lachman activo radiológico (LAR) y TelosR. Se asumió el diagnóstico radiológico de inestabilidad cuando la diferencia en el desplazamiento entre la rodilla lesionada y su control fue superior a 3 mm. Los resultados demuestran que la diferencia media del desplazamiento entre la rodilla lesionada y la normal fue superior a 3 mm con ambos métodos. En el lado interno 3,7 ± 3,7 mm con el LAR y 4,8 ± 5,8 mm con el Telos (diferencias no significativas). En el lado externo esta diferencia fue de 4,3 ± 4,7 nun con el LAR y de 6,8 ± 6 mm con el Telos (p < 0,05). A pesar de estos resultados, ambos métodos mostraron una sensibilidad para la detección de la insuficiencia ligamentosa inferior al 70%, lo que cuestiona su valor para el diagnóstico de la misma.In a prospective study, 32 patients with arthroscopically proved anterior cruciate ligament rupture were previously stressradiographied on both knees through two methods: the quadriceps-contraction technique (QCT) and the TelosR device. Instability was assumed when radiological differential displacement between injured and normal knee was greated than 3 mm. Results showed that this differential displacement was greater than 3 mm with both methods: 3,7 ± 3,7 mm v.s. 4,8 ± 5,8 mm in the medial side (differences not significant) and 4,3 ± 4,7 mm v.s. 6,8 ± 6 mm (p < 0.05) for the lateral side with the QCT and TelosR respectively. In spite of these differences, both methods showed a sensitivity lower than 70%
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