1,720,954 research outputs found
Las obras paralizadas en agua potable y saneamiento en el ámbito rural, evaluación y propuesta para aumentar la reactivación - Año 2025
No full textLa investigación se enfoca en la “valoración de las obras inacabadas de
suministro de agua potable y saneamiento en la zona rural, con el objetivo general de
determinar el nivel de paralización de las mismas para el año 2025”, en proyectos
financiados por el “Ministerio de Vivienda, Construcción y Saneamiento (MVCS)”. La
metodología utilizada es cuantitativa, aplicando un diseño descriptivo y transversal,
con recolección de datos mediante encuestas y el análisis documental, validando la
información mediante el uso de SPSS. Los hallazgos muestran que, entre las causas
de paralización, que incluyen el incumplimiento contractual, deficiencias en los
expedientes técnicos y problemas administrativos, con el impacto económico y social,
destacando que el 80% de las obras tienen algún grado de paralización, también
destaca que los principales problemas que afectan la reactivación de las obras son la
falta de recursos y la debilidad en la gestión contractual y técnica, el impacto de estas
paralizaciones es significativo, afectando tanto la economía local como la calidad de
vida de las comunidades rurales, con más de S/ 174 millones de inversión no
ejecutada
Concreto en las construcciones informales de la ciudad de Cutervo, evaluación y propuesta
Full text linkSe evaluó las características físico – químicas de los materiales integrantes del
concreto, la consistencia, temperatura, resistencia a la compresión y la puesta en obra en construcciones informales de la ciudad de Cutervo; para lo cual se trabajó con una población censal de veinte construcciones ubicadas en la ciudad. Los ensayos con los agregados en la arena gruesa proveniente de las canteras El Verde y San Lorenzo cumplen con la gradación según Norma Técnica Peruana 400.018, el agregado grueso proveniente de la cantera de piedra Raime no cumple con dicho requisito; el agua potable utilizada es apta para la preparación del concreto y en el 75% de construcciones informales se usa el Cemento Portland Tipo I Pacasmayo; se obtuvo una resistencia característica final de 89.27 kg/cm2 sometida a ensayos y comprobada bajo criterios probabilísticos y norma ACI 318. Para el mezclado del concreto no contaron con diseño de mesclas, en el 70% de construcciones se usó mezcladora tipo trompo de 13HP- 9P3 y el 30% lo hacen de manera artesanal utilizando palana, en el concreto preparado se encontró slump comprendido entre 2.6 a 4.9 pulgadas y una temperatura en el rango de 15 a 18°C, la colocación del concreto se realiza a través de baldes, no utilizan equipo vibrador; el personal responsable de obra sólo 15% tiene capacitaciones, el 65 % tiene grado de instrucción primaria y 10% grado de instrucción superior técnica. Se concluye que la resistencia a la compresión del concreto en las construcciones informales de la ciudad de Cutervo en sus distintos elementos estructurales está por debajo del requerimiento 210 kg/cm2 al no cumplir con: la calidad de los agregados, propiedades del concreto y el eficiente proceso constructivo analizado en el uso de equipos y mano de obra
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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