956 resultados para Scientific evaluation


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Se analizan los parámetros de evaluación utilizados por RedALyC, Catálogo Latindex, SciELO, Scopus y Web of Science para incorporar revistas científicas en sus colecciones, a fin de demostrar su relación con los objetivos perseguidos por cada base y debatir acerca de la valoración que la comunidad científica está otorgándoles a estos sistemas como determinantes de "calidad científica". Los indicadores utilizados se clasifican en: 1) Calidad editorial (aspectos formales o gestión editorial); 2) Calidad de contenido (revisión por pares u originalidad) y 3) Visibilidad (prestigio de editores y editorial, endogamia, uso e impacto, accesibilidad o indización). Se revela que: a) entre un 9 y un 16 se relacionan con la calidad de contenido; b) falta especificidad en sus definiciones y en la determinación de sus pesos específicos en los sistemas, y c) coinciden con los objetivos de cada base, aunque se observa una marcada tendencia hacia los relacionados con aspectos formales y visibilidad. Se deja así en evidencia que estos sistemas persiguen sus propios objetivos y que conforman núcleo de revistas de "calidad" para su público lector. Se concluye, en consecuencia, que la presencia o ausencia de una revista en estas colecciones, no es parámetro suficiente para determinar la calidad de las revistas científicas ni de sus contenidos.

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Se analizan los parámetros de evaluación utilizados por RedALyC, Catálogo Latindex, SciELO, Scopus y Web of Science para incorporar revistas científicas en sus colecciones, a fin de demostrar su relación con los objetivos perseguidos por cada base y debatir acerca de la valoración que la comunidad científica está otorgándoles a estos sistemas como determinantes de "calidad científica". Los indicadores utilizados se clasifican en: 1) Calidad editorial (aspectos formales o gestión editorial); 2) Calidad de contenido (revisión por pares u originalidad) y 3) Visibilidad (prestigio de editores y editorial, endogamia, uso e impacto, accesibilidad o indización). Se revela que: a) entre un 9 y un 16 se relacionan con la calidad de contenido; b) falta especificidad en sus definiciones y en la determinación de sus pesos específicos en los sistemas, y c) coinciden con los objetivos de cada base, aunque se observa una marcada tendencia hacia los relacionados con aspectos formales y visibilidad. Se deja así en evidencia que estos sistemas persiguen sus propios objetivos y que conforman núcleo de revistas de "calidad" para su público lector. Se concluye, en consecuencia, que la presencia o ausencia de una revista en estas colecciones, no es parámetro suficiente para determinar la calidad de las revistas científicas ni de sus contenidos.

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Se analizan los parámetros de evaluación utilizados por RedALyC, Catálogo Latindex, SciELO, Scopus y Web of Science para incorporar revistas científicas en sus colecciones, a fin de demostrar su relación con los objetivos perseguidos por cada base y debatir acerca de la valoración que la comunidad científica está otorgándoles a estos sistemas como determinantes de "calidad científica". Los indicadores utilizados se clasifican en: 1) Calidad editorial (aspectos formales o gestión editorial); 2) Calidad de contenido (revisión por pares u originalidad) y 3) Visibilidad (prestigio de editores y editorial, endogamia, uso e impacto, accesibilidad o indización). Se revela que: a) entre un 9 y un 16 se relacionan con la calidad de contenido; b) falta especificidad en sus definiciones y en la determinación de sus pesos específicos en los sistemas, y c) coinciden con los objetivos de cada base, aunque se observa una marcada tendencia hacia los relacionados con aspectos formales y visibilidad. Se deja así en evidencia que estos sistemas persiguen sus propios objetivos y que conforman núcleo de revistas de "calidad" para su público lector. Se concluye, en consecuencia, que la presencia o ausencia de una revista en estas colecciones, no es parámetro suficiente para determinar la calidad de las revistas científicas ni de sus contenidos.

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La inclusión de las variables ambientales en el proceso de toma de decisiones relacionado con las grandes infraestructuras de transporte debe estar basada en los resultados obtenidos después de evaluarlas científicamente. El paisaje visual, entendido como el resultado de la interacción entre el observador y su entorno, toma cada vez más importancia como aspecto ambiental a tener en cuenta, tanto para las autoridades como para la sociedad. La evaluación del paisaje permite integrar las variables territoriales y su relación con el observador. Es necesario profundizar en el conocimiento de la relación del paisaje con las infraestructuras de transporte, en concreto con las autopistas, para desarrollar metodologías y herramientas científicas necesarias para su correcta evaluación. El objetivo de esta tesis es aportar una metodología que permita que el paisaje se integre como elemento estructural y funcional en el diseño de las autopistas. La investigación realizada ha permitido analizar en profundidad las variables que influyen en la percepción del paisaje propio de las autopistas, cuantificar en qué grado las intervenciones de integración paisajística mejoran dicha percepción y aportar una metodología que permite evaluar el carácter y la calidad visual del paisaje empleando fotografías e indicadores que se calculan con la ayuda de un sistema de información geográfica.ABSTRACT The inclusion of environmental variables in the decision making process related to major transport infrastructures should be based on the results obtained after scientific evaluation. The visual landscape, understood as the result of the interaction between the observer and the environment, is becoming more important as an environmental aspect to consider, both for the authorities and society. Landscape evaluation integrates territorial variables and their relationship to the viewer. This thesis deepens the knowledge of the relationship between landscape and transport infrastructures, in particular the highways. The objective of this thesis is to provide a methodology that allows the landscape to be integrated as a structural and functional element in the design of highways. This research has allowed to analyze in depth the variables that influence the perception of the highways’ landscape, to quantify the extent to which integration measures improve landscape perception and to provide a methodology to assess the character and visual quality of the landscape using photographs and indicators calculated by geographic information systems.

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This book provides an independent and in-depth contribution on the status of bilateral economic exchanges and persistent trade barriers between the European Union and China. A second objective is to encourage a frank and open dialogue, based on a scientific evaluation and without prejudice, of the possibility of a preferential trade agreement between the two sides. The study, commissioned by the Foreign Trade Association, was carried out by CEPS, in cooperation with the World Trade Institute (WTI) at the University of Bern. Jacques Pelkmans, CEPS Senior Research Fellow, served as overall study leader and Joseph Francois, Managing Director and Professor of Economics at the World Trade Institute, led the WTI team.

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Foreword. The Foreign Trade Association, which represents the European and international distribution and retail sector, commissioned this study in light of the importance of China as a sourcing country and its attractiveness as a rapidly growing consumer market. We believe that open borders and free trade can contribute to a broader choice and lower costs for consumers and create growth and employment in both Europe and China. This independent study aims to provide an in-depth contribution on the status of bilateral economic exchanges and persistent trade barriers that exist between the European Union and China. The second objective of the report is to encourage a frank and open dialogue, based on a scientific evaluation and without prejudice, on the possibility of a preferential trade agreement between the two sides. This study should be read by anyone who is interested in economic relations between the EU and China and in trade policy in general. The report provides many interesting findings and raises a number of surprising points. Overall, this study is one of the most significant contributions to the discourse on EU-China relations in recent years. We hope that this study will stimulate fresh thoughts on the benefits of closer future cooperation between two regions that have been interlinked since the times of antiquity and the first Silk Road.

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The Centre for European Policy Studies (CEPS) is an independent policy research institute in Brussels. Its mission is to produce sound policy research leading to constructive solutions to the challenges facing Europe. The views expressed in this book are entirely those of the authors and should not be attributed to CEPS or any other institution with which they are associated or to the European Union. This book, commissioned by the Foreign Trade Association, aims to provide an independent and in-depth contribution on the status of bilateral economic exchanges and persistent trade barriers between the European Union and China. A second objective is to encourage a frank and open dialogue, based on a scientific evaluation and without prejudice, of the possibility of a preferential trade agreement between the two sides. The study was carried out by CEPS, in cooperation with the World Trade Institute at the University of Bern.

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In recent years several scientific Workflow Management Systems (WfMSs) have been developed with the aim to automate large scale scientific experiments. As yet, many offerings have been developed, but none of them has been promoted as an accepted standard. In this paper we propose a pattern-based evaluation of three among the most widely used scientific WfMSs: Kepler, Taverna and Triana. The aim is to compare them with traditional business WfMSs, emphasizing the strengths and deficiencies of both systems. Moreover, a set of new patterns is defined from the analysis of the three considered systems.

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Scientists are faced with a dilemma: either they can write abstract programs that express their understanding of a problem, but which do not execute efficiently; or they can write programs that computers can execute efficiently, but which are difficult to write and difficult to understand. We have developed a compiler that uses partial evaluation and scheduling techniques to provide a solution to this dilemma.

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We describe the key role played by partial evaluation in the Supercomputer Toolkit, a parallel computing system for scientific applications that effectively exploits the vast amount of parallelism exposed by partial evaluation. The Supercomputer Toolkit parallel processor and its associated partial evaluation-based compiler have been used extensively by scientists at M.I.T., and have made possible recent results in astrophysics showing that the motion of the planets in our solar system is chaotically unstable.

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In 2000 a Review of Current Marine Observations in relation to present and future needs was undertaken by the Inter-Agency Committee for Marine Science and Technology (IACMST). The Marine Environmental Change Network (MECN) was initiated in 2002 as a direct response to the recommendations of the report. A key part of the current phase of the MECN is to ensure that information from the network is provided to policy makers and other end-users to enable them to produce more accurate assessments of ecosystem state and gain a clearer understanding of factors influencing change in marine ecosystems. The MECN holds workshops on an annual basis, bringing together partners maintaining time-series and long-term datasets as well as end-users interested in outputs from the network. It was decided that the first workshop of the MECN continuation phase should consist of an evaluation of the time series and data sets maintained by partners in the MECN with regard to their ‘fit for purpose’ for answering key science questions and informing policy development. This report is based on the outcomes of the workshop. Section one of the report contains a brief introduction to monitoring, time series and long-term datasets. The various terms are defined and the need for MECN type data to complement compliance monitoring programmes is discussed. Outlines are also given of initiatives such as the United Kingdom Marine Monitoring and Assessment Strategy (UKMMAS) and Oceans 2025. Section two contains detailed information for each of the MECN time series / long-term datasets including information on scientific outputs and current objectives. This information is mainly based on the presentations given at the workshop and therefore follows a format whereby the following headings are addressed: Origin of time series including original objectives; current objectives; policy relevance; products (advice, publications, science and society). Section three consists of comments made by the review panel concerning all the time series and the network. Needs or issues highlighted by the panel with regard to the future of long-term datasets and time-series in the UK are shown along with advice and potential solutions where offered. The recommendations are divided into 4 categories; ‘The MECN and end-user requirements’; ‘Procedures & protocols’; ‘Securing data series’ and ‘Future developments’. Ever since marine environmental protection issues really came to the fore in the 1960s, it has been recognised that there is a requirement for a suitable evidence base on environmental change in order to support policy and management for UK waters. Section four gives a brief summary of the development of marine policy in the UK along with comments on the availability and necessity of long-term marine observations for the implementation of this policy. Policy relating to three main areas is discussed; Marine Conservation (protecting biodiversity and marine ecosystems); Marine Pollution and Fisheries. The conclusion of this section is that there has always been a specific requirement for information on long-term change in marine ecosystems around the UK in order to address concerns over pollution, fishing and general conservation. It is now imperative that this need is addressed in order for the UK to be able to fulfil its policy commitments and manage marine ecosystems in the light of climate change and other factors.