PISA 2012 Technical Report

Science.gov (United States)

OECD Publishing, 2014

2014-01-01

The "PISA 2012 Technical Report" describes the methodology underlying the PISA 2012 survey, which tested 15-year-olds' competencies in mathematics, reading and science and, in some countries, problem solving and financial literacy. It examines the design and implementation of the project at a level of detail that allows researchers to…

Explaining Italian Underdevelopment. The Liberal Revolution of Piero Gobetti

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Gonzalo Varela Petito

2010-07-01

Full Text Available This article presents to the readers in Latin America the thought of the Italian liberal writer and politician Piero Gobetti (Torino 1900–Paris 1926 who was a close friend of Antonio Gramsci and one of the main intellectual influences on the work of the marxist peruvian thinker José Carlos Mariátegui. His most relevant book, La Rivoluzione Libérale, was translated into Spanish only recently but —as Mariátegui understood— some of Gobetti's ideas are very relevant to an analysis of Latin American socialformations. His very original "movement oriented" liberalism was influenced by the Russian revolution as well as by philosophers like Georges Sorel, Gaetano Mosca, Benedetto Croce and Henri Bergson.Gobetti's major concern in politics was to promote the emergence of a new ruling class. For a better comprehension of his thought, Gobetti's ideas are here compared with those of Gramsci and Mariátegui.

Hvor langt er PISA fra Danmark?

DEFF Research Database (Denmark)

Dolin, Jens; Krogh, Lars Brian

2008-01-01

PISA 2006 science testen i en dansk kontekst. I det første delprojekt sammenlignes PISA science frameworket med de danske mål for naturfagsuddannelserne. I det andet delprojekt undersøges hvorledes PISA testformatet er i overensstemmelse med evalueringspraksis i naturfagene i den danske folkeskole. I...... det tredje delprojekt sammenlignes elevers score i PISA science testen med deres resultater i en mere dialogbaseret evalueringssituation.   De tre delundersøgelser betjener sig af forskellige metoder, nemlig henholdsvis tekstanalyse, spørgeskemaundersøgelse/ interview samt en egentlig feltvalidering...

Estrategias Didácticas con Cuadernia para elevar el Rendimiento Escolar el el Área de Matemática del Primer Grado de Secundaria Institución Educativa “San Carlos”- Monsefú. Chiclayo - 2016.

OpenAIRE

Mimbela Sánchez, Rosa Yessenia

2017-01-01

La presente investigación titulada: “Estrategias Didácticas con Cuadernia para elevar el rendimiento escolar en el área de matemática del Primer Grado “B” de secundaria. Institución educativa “San Carlos”- Monsefú.Chiclayo.2016.” surge porque que los estudiantes de la institución educativa “San Carlos” presentan dificultades para resolver problemas en el área de matemática lo que origina un bajo rendimiento escolar, además se ha evidenciado que los docentes no incorporan las Te...

Findings from the PISA for Development Field Trial of the School-Based Assessment. PISA for Development Brief 16

Science.gov (United States)

OECD Publishing, 2017

2017-01-01

The PISA for Development (PISA-D) project aims to make PISA more accessible and relevant to middle- and low-income countries by introducing new features to the assessment, including tests that are specially designed to measure lower levels of performance, contextual questionnaires that better reflect the situations of 15-year-olds across a diverse…

tecnología en el estudio PISA 2006

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José Antonio Acevedo-Díaz

2007-01-01

Full Text Available Este artículo describe las principales novedades incorporadas en la evaluación comparativa internacional PISA 2006. Después de analizar el significado de alfabetización científica adoptado, se presta especial atención a la evaluación de actitudes relacionadas con la ciencia y la tecnología, a señalar los aspectos que evalúa esta nueva dimensión y a cómo lo hace el proyecto PISA 2006.

PIERO ontology for analysis of biochemical transformations: effective implementation of reaction information in the IUBMB enzyme list.

Science.gov (United States)

Kotera, Masaaki; Nishimura, Yosuke; Nakagawa, Zen-ichi; Muto, Ai; Moriya, Yuki; Okamoto, Shinobu; Kawashima, Shuichi; Katayama, Toshiaki; Tokimatsu, Toshiaki; Kanehisa, Minoru; Goto, Susumu

2014-12-01

Genomics is faced with the issue of many partially annotated putative enzyme-encoding genes for which activities have not yet been verified, while metabolomics is faced with the issue of many putative enzyme reactions for which full equations have not been verified. Knowledge of enzymes has been collected by IUBMB, and has been made public as the Enzyme List. To date, however, the terminology of the Enzyme List has not been assessed comprehensively by bioinformatics studies. Instead, most of the bioinformatics studies simply use the identifiers of the enzymes, i.e. the Enzyme Commission (EC) numbers. We investigated the actual usage of terminology throughout the Enzyme List, and demonstrated that the partial characteristics of reactions cannot be retrieved by simply using EC numbers. Thus, we developed a novel ontology, named PIERO, for annotating biochemical transformations as follows. First, the terminology describing enzymatic reactions was retrieved from the Enzyme List, and was grouped into those related to overall reactions and biochemical transformations. Consequently, these terms were mapped onto the actual transformations taken from enzymatic reaction equations. This ontology was linked to Gene Ontology (GO) and EC numbers, allowing the extraction of common partial reaction characteristics from given sets of orthologous genes and the elucidation of possible enzymes from the given transformations. Further future development of the PIERO ontology should enhance the Enzyme List to promote the integration of genomics and metabolomics.

A review on research activities using the SANS spectrometer in transmission geometry at ET-RR-1 reactor

International Nuclear Information System (INIS)

Adib, M.

1999-01-01

The phased double rotor facility operating at ET-RR-1 reactor (2MW) was rearranged to operate as SANS spectrometer in transmission geometry. The rotors are suspended in magnetic fields and are spinning up to 16,000 rpm producing bursts of polyenergetic neutrons with wavelengths from 0.2 nm to 6.5 nm and beam divergence of 17' on the sample. The review on research activities using the SANS spectrometer and its applications for powder particle size determination and the long wavelength fluctuation of magnetization of the Fe-Ni alloys are discussed. (author)

PISA: Multiple 'Truths' and Mediatised Global Governance

Science.gov (United States)

Grey, Sue; Morris, Paul

2018-01-01

The OECD's PISA programme has been portrayed as central to the emergence of a regime of global educational governance and the subsequent convergence of policies towards a standardised model. Whilst there is an extensive literature describing PISA's impact on education policies, there is a paucity of analysis of how PISA data is presented to the…

'AER Working Group D On WWER Safety Analysis' Report Of The Meeting In Pisa, Italy, 26-27 April 2006

International Nuclear Information System (INIS)

Siltanen, P.

2006-01-01

AER Working Group D on WWER reactor safety analysis held its 15 t h meeting in Grand Hotel Duomo in Pisa, Italy during the period 26-27 April 2006. The meeting was hosted by the University of Pisa following the fourth workshop on the OECD/DOE/CEA WWER-1000 Coolant Transient Benchmark (W1000-CT) held at the same location on 24-25 April. Altogether 15 participants attended the Working Group D meeting, 11 from AER member organizations and 4 guests from non-member organizations. The coordinator for the working group, Mr. P. Siltanen (FNS) served as chairman. In addition to general information exchange on recent activities in the participating organizations, the topics of the meeting included: 1) Code development and benchmarking for reactor dynamics applications. 2) Safety analysis methodology and results. 3) Future activities. A list of participants and a list of handouts distributed at the meeting are attached to the report (Author)

PISA and Global Educational Governance--A Critique of the Project, Its Uses and Implications

Science.gov (United States)

Sjøberg, Svein

2015-01-01

The PISA project has steadily increased its influence on the educational discourse and educational policies in the now 70 participating countries. The educational debate has become global, and the race to improve PISA-rankings has become high priority in many countries. For governments the PISA-test is a high-stake test. Governments are blamed for…

EL DEBATE EN TORNO A LAS ENCUESTAS PISA EN FRANCIA THE DEBATE CONCERNING THE PISA SURVEYS IN FRANCE

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Eguzki Urteaga

2010-02-01

Full Text Available El programa internacional para el seguimiento de los conocimientos de los alumnos, conocido como PISA (Programme for International Student Assessment, no goza de una buena reputación en Francia. Publicadas cada tres años, sus evaluaciones de los sistemas educativos de los treinta países de la OCDE, y actualmente de otros cincuenta países, son de una calidad metodológica reconocida y resisten a la mayoría de las objeciones que le son dirigidas. No en vano, siguen siendo ampliamente ignoradas en Francia donde se intenta descalificarlas a menudo. La reticencia gala hacia esta encuesta resulta de la clasificación mediana para no decir mediocre en la que sitúa al Hexágono en los tres ámbitos evaluados por PISA: comprensión de lo escrito, matemáticas y cultura científica. Si el nivel educativo sube, las diferencias entre alumnos se incrementan. The international program for the follow-up of the knowledge of the pupils, known as PISA (Programme for International Student Assessment, does not enjoy the French observer. Published every three years, his evaluations of the educational systems of thirty countries of the OECD, and nowadays of other fifty countries, have a methodological recognized quality and resist to the majority of the objections that are directed for him. Not uselessly, they continue being widely ignored in France where they try to discredit them very often. The French reticence towards this research come from medium or including mediocre classification in which places the Hexagon in the three areas evaluated by PISA: comprehension of writing, mathematics and scientific culture. If the educational level rises, the differences between pupils increase.

Understanding PISA

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Stephen DOWNES

2005-04-01

Full Text Available Understanding PISA Stephen DOWNESMoncton, CANADA ABSTRACT The headline was dramatic enough to cause a ripple in the reading public. "Students who use computers a lot at school have worse maths and reading performance," noted the BBC news article, citing a 2004 study by Ludger Woessmann and Thomas Fuchs (Fuchs and Woessman, 2004. It was not long before the blogosphere took notice. Taking the theme and running with it, Alice and Bill ask, "Computers Make School Kids Dumber?" They theorize, "If you track the admitted decline of education, you'll probably notice that it follows along with the increase of technology in the classroom." In a similar vein, James Bartholomew asks, "Do you think that the government will turn down the volume of its boasting about how it has spent billions introducing computers in schools (while keeping down the pay of teachers so much that there are shortages? Do you think it will stop sending governors of state schools glossy pamphlets about insisting that computers are used in their schools as much as possible?" In this study, therefore, PISA looks well beyond educational attainment, and also includes school demographics, such as whether it is a public or private school, has large or small classes, or has access or not to technological resources. Finally, it does measure student information-their family background, access to books and computers and parental support as well. The PISA survey departs from previous surveys in disregarding the stated curricula of the schools being measured. Therefore, the conclusion is not surprising, nor even wrong for him to consider independently of any parental or teacher support, considered without reference to the software running on it, considered without reference to student attitudes and interests, does not positively impact an education. Finally, he focus on missing the reporting of results

PROFESSORES DO PISA: A ESPERANÇA E A REALIZAÇÃO DA EDUCAÇÃO

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Daniel Pettersson

Full Text Available RESUMO: As atividades do Programme for International Student Assessment (PISA e os seus efeitos são diversos, sendo possível dizer que o PISA cria e forma uma fundamentação específica (HACKING, 1992 para discutir, falar e pensar sobre a educação. Neste estudo sobre as atividades do PISA, são analisadas as ideias sobre os professores, as atividades que realizam, e como estas são conceitualizadas no interior de uma narrativa própria ao PISA. Os resultados mostram que os professores são apresentados como sendo importantes e cruciais para a transformação e para o desenvolvimento da educação. Os professores também são representados como sendo essenciais para reduzir as "disparidades no desempenho" dos alunos medidas pelo teste PISA. Ademais, os "bons" professores e o ensino "eficaz" são descritos como os professores e as estratégias que conduzem a tal redução. Consequentemente, os principais relatórios do PISA enfatizam uma imagem dos professores como os atores que desenvolvem a educação e o ensino, e não como executantes de políticas determinadas pelo Estado. Deste modo, os professores são considerados como indicadores da eficácia dos sistemas de educação e importantes para elevar os padrões de desempenho, sendo assim considerados como a esperança e a realização da educação.

The Relevance and Consequences of PISA in a Danish Context

DEFF Research Database (Denmark)

Dolin, Jens; Krogh, Lars Brian

2010-01-01

ABSTRACT. This article reports a case study that described and analyzed the changes in the Danish school culture induced and encouraged by the Programme for International Student Assessment (PISA) results. The educational policy and reforms that were temporally connected with the publication of t......, different learning/assessment paradigms). We argue that such differences are crucial when considering curricular relevance, validity, and the use of PISA as an agent of change on the national level....

A Comparison of PISA and TIMSS 2003 Achievement Results in Mathematics

Science.gov (United States)

Wu, Margaret

2009-01-01

This study compares the Programme for International Student Assessment (PISA) 2003 Mathematics results with the Trends in International Mathematics and Science Study (TIMSS) 2003 Grade 8 mathematics results, using country mean scores for 22 participants of both studies. It is found that Western countries generally performed better in PISA than in…

Influencia del software geogebra en el aprendizaje de programación lineal de los estudiantes del quinto grado de educación secundaria de la Institución Educativa Fe y Alegría Nº 25, San Juan de Lurigancho, 2013

OpenAIRE

Gamarra Malpartida, Marco Antonio

2015-01-01

El trabajo de investigación tuvo como objetivo determinar la influencia del software geogebra en el aprendizaje de programación lineal en los estudiantes del quinto grado de educación secundaria de la I. E. Fe y Alegría Nº 25, San Juan de Lurigancho, 2013. Las variables identificadas son: El software geogebra (variable independiente) y El aprendizaje de programación lineal (variable dependiente). El tipo de investigación fue experimental; diseño cuasi experimental y un enfoque cuantitativo. L...

Il sistema antroponimico a Pisa tra XI e XIII secolo The anthroponymic system in Pisa,11th-13th century

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Enrica Salvatori

2001-12-01

Full Text Available

Ipertesto dedicato al sistema antroponimico in uso a Pisa nel corso del medioevo centrale. Testi, immagini e grafici sono il risultato della rielaborazione di due articoli dell'autrice usciti sulla rivista “Melanges de l'École Française de Rome" rispettivamente ai numeri 106/2 (1994 e  107/2 (1995.

Hypertext dedicated to the anthroponymic system in use in Pisa during the High Middle Ages. Text, images and graphics come from the revision, made by the author, of two essays published in  "Melanges de l'Ecole Française de Rome", respectively 106/2 (1994 and 107/2 (1995.

Uma re-análise dos resultados do PISA: problemas de comparabilidade Un reanálisis de los resultados del PISA: Problemas de comparabilidad A re-analysis of PISA results: comparability problems

Directory of Open Access Journals (Sweden)

Ruben Klein

2011-12-01

Full Text Available Neste artigo apresenta-se um problema de comparabilidade de resultados entre aplicações do Pisa, em alguns países, em diversos anos e entre países. Esse problema ocorre porque a idade escolar de cada país não é considerada e porque não há uma regra para a data de aplicação da prova em relação aos anos letivos de cada país. A mudança de data da aplicação em um país modifica a composição do alunado entre as séries, tornando os universos não comparáveis. Analisa-se com detalhes o caso do Brasil e mostra-se que os universos de 2000 e 2009 não são comparáveis. Analisa-se também alguns outros países, entre eles Luxemburgo e Chile, que, juntos com o Brasil, foram destacados como tendo a maior evolução de desempenho desde 2000. Em Luxemburgo, não houve melhoria de desempenho de 2003 para 2009 e é preciso investigar porque os resultados de 2000 e 2003 são tão diferentes. O Chile apresenta melhoria de desempenho, mas provavelmente não tão grande quanto o apontado.En este artículo se presenta un problema de comparabilidad de resultados entre las aplicaciones del PISA en algunos países, en diversos años y entre los países. Ese problema ocurre porque no se considera la edad escolar de cada uno de los países ni tampoco existe una regla para la fecha de aplicación de la prueba con relación a los años lectivos de cada país. El cambio de fecha de la aplicación en un determinado país modifica la composición del alumnado entre los grados, tornando los universos incomparables. Se analiza con detalles el caso de Brasil y se muestra que los universos de 2000 y 2009 no se pueden comparar. Se analiza también algunos otros países, entre ellos Luxemburgo y Chile, que, juntos con Brasil, se destacaron por tener la mayor evolución de desempeño desde 2000. En Luxemburgo no hubo mejora de desempeño de 2003 para 2009 y es necesario investigar porque los resultados de 2000 y 2003 son tan distintos. Chile presenta mejora de

Práctica 3: Precipitación, Filtración y Centrifugación (Video 3 de 4) - Grado en Química, Grado en Enología y Grado en Biotecnología

OpenAIRE

Palacios Santander, José María; Cubillana Aguilera, Laura; Fernández Barbero, Gerardo; Espada Bellido, Estrella; García Moreno, María de Valme

2015-01-01

Práctica 3: Precipitación, Filtración y Centrifugación (Video 3 de 4) - Grado en Química, Grado en Enología y Grado en Biotecnología. Este vídeo se inicia con la preparación de la muestra para su posterior centrifugación y concluye con la separación del precipitado del sobrenadante.

DECISIONES ESTRATÉGICAS DE LECTURA Y RENDIMIENTO EN TAREAS DE COMPETENCIA LECTORA SIMILARES A PISA

Directory of Open Access Journals (Sweden)

María-Ángeles Serrano Mendizábal

2017-01-01

Full Text Available El rendimiento dispar encontrado en algunos pa ses del informe PISA 2009 (OECD, 2010 entre textos continuos y no-continuos en tareas de competencia lectora, as como la naturaleza y estructura diferente de la informaci n textual, han motivado el estudio del procesamiento on-line de ambos tipos de texto con el objetivo de explorar qu sucede cuando se usan para responder preguntas. El objetivo de este estudio fue analizar las decisiones estrat gicas de relectura de textos continuos y no-continuos en tareas de competencia lectora similares a las de PISA, as como la estabilidad en el uso de esta estrategia. Para ello, se aplicaron dos pruebas estandarizadas de competencia lectora a 112 alumnos de 6. de Primaria y 1. y 2. de ESO, una que inclu a dos textos continuos y otra con cinco textos, tres continuos y dos no-continuos. Los estudiantes leyeron los textos y contestaron las preguntas con el software Read&Answer (Vidal-Abarca, Mart nez, Salmer n, Cerd n y otros, 2011, que permite registrar la conducta on-line adem s del rendimiento. Las puntuaciones en los textos no-continuos resultaron m s bajas que en los continuos, a pesar del mayor n mero de re - lecturas de estos antes de responder. Asimismo, los estudiantes mostraron un grado de estabilidad en sus decisiones estrat gicas de relectura en ambos tipos de texto. El menor rendimiento en textos no-continuos sumado al n mero superior de relecturas para responder preguntas sobre estos, podr a estar indi - cando una menor competencia de nuestros estudiantes en el uso de estrategias relacionadas con la interpretaci n de informaci n no-continua en comparaci n con la mostrada para procesar textos continuos. Los resultados revelan la im - portancia de ense ar de manera expl cita procedimientos espec cos para la comprensi n de textos no-continuos a trav s de las diversas materias.

Program for International Student Assessment (PISA) 2006 and Scientific Literacy: A Perspective for Science Education Leaders

Science.gov (United States)

Bybee, Rodger W.

2009-01-01

This article describes the idea of scientific literacy as defined in PISA, discusses relevant results of PISA, and clarifies meaningful relationships between PISA data and scientific competencies of U.S. students. Finally, the author includes insights and recommendations for contemporary leadership in science education. (Contains 8 tables and 1…

Education Policy in Poland: The Impact of PISA (and Other International Studies)

Science.gov (United States)

Bialecki, Ireneusz; Jakubowski, Maciej; Wisniewski, Jerzy

2017-01-01

The impact of the PISA study on Polish education policy has been significant, but probably different from any other country. Poland has not experienced the so-called "PISA shock," but its education system has been benefiting considerably from PISA. For experts and policy makers, it has been a useful and reliable instrument that has made…

PISA as a Political Tool in Spain: Assessment Instrument, Academic Discourse and Political Reform

Science.gov (United States)

Vega Gil, Leoncio; Hernández Beltrán, Juan Carlos; García Redondo, Eva

2016-01-01

This study examines to what extent there is a sort of "political appropiation" by political parties when they seek to set a discourse about the Spanish PISA outcomes. We have consistently found that programs for assessing the competencies of students, especially PISA, have become tools of rationalization and the legitimization of…

PISA 2015 Results: Students' Financial Literacy. Volume IV

Science.gov (United States)

OECD Publishing, 2017

2017-01-01

The OECD Programme for International Student Assessment (PISA) examines not just what students know in science, reading and mathematics, but what they can do with what they know. Results from PISA show educators and policy makers the quality and equity of learning outcomes achieved elsewhere, and allow them to learn from the policies and practices…

Developing Mathematics Problems Based on Pisa Level

Directory of Open Access Journals (Sweden)

Shahibul Ahyan

2014-01-01

Full Text Available This research aims to produce mathematics problems based on PISA level with valid and practical content of change and relationships and has potential effect for Junior High School students. A development research method developed by Akker, Gravemeijer, McKenney and Nieveen is used this research. In the first stage, the researcher analyzed students, algebra material in school-based curricula (KTSP and mathematics problems of PISA 2003 of change and relationships content. The second stage, the researcher designed 13 problems with content of change and relationships. The last, the researcher used formative evaluation design developed by Tessmer which includes self evaluation, one-to-one, expert review, small group, and field test. The data collect by walk through, interview, and questionnaire. The result of this research indicated that 12 mathematical problems based on PISA level of change and relationships content that developed have validity, practically, and potential effects for Junior High School students.

PISA Performance and Australian Education : myths and realities

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Anthony Welch

2011-10-01

Full Text Available Australia's record as one of the higher performing nations on therecent PISA tests occasioned more interest internationally than domestically. Not with standing this success however, it is argued that its overall national success on the PISA tests is something of a myth, masking wide differences between the overall majority, and certain disadvantaged minorities. Disaggregating the performance data reveals the actual situation with respect to indigenous Australians, certain ethnic minorities and the effects of social class, which in each case is complemented with analysis of test performance differentials from PISA and NAPLAN. This examination reveals the reality that Australia is less successful than several other countries in extending high levels of school performance to key minorities. Given this failure, the myth of Australian high performance needs to be re-examined: much more needs to be done to boost the educational success of disadvantaged minorities.Los resultados de Australia, como uno de los países como uno de los países con los mejores resultados en el reciente estudio PISA han interesado más fuera de sus fronteras que dentro de ellas. A pesar de este éxito, sin embargo, se argumenta que los buenos resultados nacionales en los test de PISA encierran algo de mito y enmascara amplias diferencias entre la inmensa mayoría y ciertas minorías desaventajadas. Realizando un examen desagregado de los datos de Australia se pone de manifiesto la situación actual respecto a los indígenas de ese continente, ciertas minorías étnicas y el efecto de la clase social que se complementa en cada caso con el análisis de los diferenciales de rendimiento entre PISA y NAPLAN. El examen revela que Australia en realidad es menos exitosa que algunos de otros países a la hora de extender elevados niveles de rendimiento escolar a determinadas minorías clave. Ante este fracaso, el mito del alto rendimiento australiano necesita ser revisado: es

Psychometric properties of the Slovenian version of temperament evaluation of Memphis, Pisa, Paris, and San Diego-Autoquestionnaire (TEMPS-A): temperament profiles in Slovenian university students.

Science.gov (United States)

Dolenc, Barbara; Sprah, Lilijana; Dernovšek, Mojca Z; Akiskal, Kareen; Akiskal, Hagop S

2013-01-25

TEMPS-A (Temperament Evaluation of Memphis, Pisa, Paris and San Diego-Autoquestionnaire) is a self-rated instrument that measures five affective temperaments: depressive, cyclothymic, hyperthymic, irritable, and anxious. The aim of our study was to examine the psychometric characteristics of the Slovenian TEMPS-A and to ascertain if temperament profile is related to the professions chosen by Slovenian students. 892 Slovenian university students in six different professional fields (economics, geography, engineering, law, sports pedagogy and nursing) were included in our study. Cronbach's reliability coefficients denoted acceptable internal consistency of the subscales. Principal component analysis revealed relatively good internal structure of the instrument. Nursing and geography students scored the highest on depressive temperament. Sports pedagogues as well as engineers demonstrated the most firm personality structure with distinctive hyperthymic temperament. Law students revealed the most irritable temperament, while nursing and law students scored the highest on anxious temperament. Sample of Slovenian students is not representative for general population. The structure of the sample was crucial as well, as it comprised mainly of younger students who just started their study. The Slovenian version of the TEMPS-A proved to have relatively good internal consistency and internal structure. The questionnaire verified as a reliable and valid instrument and generally in line with previous studies. This study strengthens the perspective that professional areas could be associated with distinct affective temperament profile that could influence career decisions. The findings in students of economics, geography, and sport pedagogy are new as they have not been previously investigated by TEMPS researchers. The results open new possibilities for future research. Copyright © 2012 Elsevier B.V. All rights reserved.

Comparing Danish and Swedish versions of PISA scientific literacy

DEFF Research Database (Denmark)

Serder, Malmø University, Margareta; Sørensen, Helene

This paper presents a comparison between the Swedish, Danish, English, and French versions of three scientific literacy test-units from the released PISA items 2006. More specifically it compares how different words and concepts have been translated in the Swedish and Danish tests, compared...... to the English and French original versions. Differences that occur as a result of the translation process concerning words’ meaning are demonstrated. The possible consequences of such differences are exemplified by an excerpt from a situation in which Swedish 15-year-old students collaboratively worked...... with these three PISA units. In the paper we claim that in spite of detailed and strongly controlled methods for achieving translations of high standard used by the PISA, important and perhaps even decisive, differences between the four versions exist....

Implementación de videoclases en YOUTUBE para el fortalecimiento y clarificación de la temática de trabajo y energía en el curso de física de grado décimo del colegio San Luis Gonzaga

OpenAIRE

García Cano, Manuel Alberto

2014-01-01

El presente trabajo se realizó con el objetivo de implementar las video-clases como una herramienta pedagógica complementaria a los procesos educativos desarrollados en el aula de clase del grado décimo de la institución San Luis Gonzaga de la ciudad de Manizales, así como su impacto en la motivación de la población estudiantil para el abordaje de las temáticas de asignaturas como la física (puntualmente trabajo y energía mecánica). La medición de la motivación se realizó mediante el uso de u...

Mathematics Curriculum in Ireland: The Influence of PISA on the Development of Project Maths

Directory of Open Access Journals (Sweden)

Liz KIRWAN

2015-12-01

Full Text Available This article interrogates the extent to which the Organization for Economic Cooperation and Development (OECD through its Programme for International Student Assessment (PISA influenced the development of Project Maths, a new second-level mathematics education policy in Ireland. It argues that the Irish government, in its revision of mathematics education policy, was strongly influenced by PISA and that concern with the country’s ‘average’ placement in the international assessment was instrumental in defining the direction of the revision. It traces the genetic imprint of PISA on the development of curriculum policy, the new mathematics syllabus, its content and assessment. It argues that Project Maths sets out to follow closely the PISA conceptual framework. However, the analysis finds that Project Maths is not a mini-PISA but that the programme is comprised of two distinct approaches, on the one hand retaining the abstract, symbolic mathematics of sections of the pre-existing curriculum, while on the other emphasizing a PISA-like approach to pedagogy and to real-life problem solving.

PISA-undersøgelsen - kan den bruges til noget?

DEFF Research Database (Denmark)

Lindenskov, Lena; Jankvist, Uffe Thomas; Fink, Klaus

2014-01-01

Der gives beskrivelser af det indhold i PISA-rapporterne, som kan betyde noget for, hvordan matematiklærere og didaktikere kan handle. Med fokus på PISA 2012 gengives 4 matematik-spørgsmål, hovedresultater fra elevbesvarelser af opgaver og spørgeskemaer samt forklaringer og nye didaktiske spørgsm....... Der sammenlignes også kort med TIMSS 2011....

The Role of Content and Context in PISA Interest Scales: A study of the embedded interest items in the PISA 2006 science assessment

Science.gov (United States)

Drechsel, Barbara; Carstensen, Claus; Prenzel, Manfred

2011-01-01

This paper focuses interest in science as one of the attitudinal aspects of scientific literacy. Large-scale data from the Programme for International Student Assessment (PISA) 2006 are analysed in order to describe student interest more precisely. So far the analyses have provided a general indicator of interest, aggregated over all contexts and contents in the science test. With its innovative approach PISA embeds interest items within the cognitive test unit and its contents and contexts. The main difference from conventional interest measures is that in most questionnaires, a relatively small number of interest items cover broad fields of contents and contexts. The science units represent a number of systematically differentiated scientific contexts and contents. The units' stimulus texts allow for concrete descriptions of relevant content aspects, applications, and contexts. In the analyses, multidimensional item response models are applied in order to disentangle student interest. The results indicate that multidimensional models fit the data. A two-dimensional model separating interest into two different knowledge of science dimensions described in the PISA science framework is further analysed with respect to gender, performance differences, and country. The findings give a comprehensive description of students' interest in science. The paper deals with methodological problems and describes requirements of the test construction for further assessments. The results are discussed with regard to their significance for science education.

The Danger of Inadequate Conceptualisation in PISA for Education Policy

Science.gov (United States)

Gaber, Slavko; Cankar, Gregor; Umek, Ljubica Marjanovic; Tasner, Veronika

2012-01-01

Due to the broad acceptance of the Programme for International Student Assessment (PISA) and other comparative studies as instruments of policymaking, its accuracy is essential. This article attempts to demonstrate omissions in the conceptualisation, and consequently in calculation and interpretation, of one of the central points of PISA 2006 and…

Searching for Authentic Context in Designing PISA-like Mathematics Problem: From Indoor to Outdoor Field Experience

Science.gov (United States)

Siswono, T. Y. E.; Kohar, A. W.; Rosyidi, A. H.; Hartono, S.; Masriyah

2018-01-01

Designing problem like in PISA is known as a challenging activity for teachers particularly as the use of authentic context within that type of problem. This paper aims to describe the experiences of secondary mathematics teachers in designing PISA-like problems within an innovative training program focusing on building teachers’ understanding on the concept of mathematical literacy. The teachers were engaged in a set of problem-solving and problem-posing activities using PISA-based problem within indoor and outdoor field experiences. Within indoor field experience, the teachers worked collaboratively in groups on designing PISA-like problems with a given context through problem generation and reformulation techniques. Within outdoor field experience, they worked on designing PISA-like problems with self-chosen context from the place where the outdoor field experience took place. Our analysis indicates that there were improvements on the PISA-like problems designed by teachers based on its level use of context from indoor to outdoor experience. Also, the teachers were relatively successful with creating appropriate and motivating contexts by harnessing a variety of context consisting of personal, occupational, societal, and scientific contexts. However, they still experienced difficulties in turning these contexts into an appropriate problem satisfying PISA framework such as regarding authenticity of context use, language structure, and PISA task profile.

Moving beyond Country Rankings in International Assessments: The Case of PISA

Science.gov (United States)

Perry, Nancy; Ercikan, Kadriye

2015-01-01

The Programme for International Student Assessment (PISA) was designed by the Organization for Economic Cooperation and Development (OECD) to evaluate the quality, equity, and efficiency of school systems around the world. Specifically, the PISA has assessed 15-year-old students' reading, mathematics, and science literacy on a 3-year cycle, since…

Scientific Literacy and Student Attitudes: Perspectives from PISA 2006 science

Science.gov (United States)

Bybee, Rodger; McCrae, Barry

2011-01-01

International assessments provide important knowledge about science education and help inform decisions about policies, programmes, and practices in participating countries. In 2006, science was the primary domain for the Programme for International Student Assessment (PISA), supported by the Organisation for Economic Cooperation and Development (OECD) and conducted by the Australian Council for Educational Research (ACER). Compared to the school curriculum orientation of Trends in International Math and Science Study (TIMSS), PISA provides a perspective that emphasises the application of knowledge to science and technology-related life situations. The orientation of PISA includes both knowledge and attitudes as these contribute to students' competencies that are central to scientific literacy. In addition to students' knowledge and competencies, the 2006 PISA survey gathered data on students' interest in science, support for scientific enquiry, and responsibility towards resources and environments. The survey used both a non-contextualised student questionnaire and contextualised questions. The latter is an innovative approach which embedded attitudinal questions at the conclusion of about two-thirds of the test units. The results presented in this article make connections between students' attitudes and interests in science and scientific literacy.

An Analysis of Students Error in Solving PISA 2012 and Its Scaffolding

OpenAIRE

Sari, Yurizka Melia; Valentino, Erik

2016-01-01

Based on PISA survey in 2012, Indonesia was only placed on 64 out of 65 participating countries. The survey suggest that the students’ ability of reasoning, spatial orientation, and problem solving are lower compare with other participants countries, especially in Shouth East Asia. Nevertheless, the result of PISA does not elicit clearly on the students’ inability in solving PISA problem such as the location and the types of student’s errors. Therefore, analyzing students’ error in solving PI...

ACG 97/4a: Modificaci??n del Grado en Logopedia

OpenAIRE

Universidad de Granada

2015-01-01

Modificaci??n de los criterios de matriculaci??n de la asignatura ???Pr??cticas Externas??? de los Grados en Logopedia y Psicolog??a: Modificaci??n del Grado en Logopedia. Aprobado en la sesi??n ordinaria de Consejo de Gobierno de 28 de julio de 2015.

Evolução do desempenho cognitivo dos jovens brasileiros no Pisa Evolution of the cognitive achievement of Brazilian youth on Pisa

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Sergei Suarez Dillon Soares

2012-04-01

Full Text Available O artigo analisa a evolução das habilidades cognitivas dos jovens brasileiros medidas pelo Programa Internacional de Avaliação de Alunos - Pisa. Reporta-se a resultados bem positivos. Apesar de um aumento considerável na porcentagem dos jovens aptos a fazer o Pisa e, portanto, uma forte redução na seletividade, a nota média brasileira subiu 33 pontos ao longo dos últimos nove anos. A posição relativa do país também aumentou: nossa nota média foi de 75% para 80% da nota média do grupo original de países que fizeram o Pisa em 2000. Em termos distributivos, a melhora foi mais proeminente na parte inferior da distribuição de habilidades cognitivas. Os centésimos na cauda inferior da distribuição de matemática viram suas notas aumentarem em torno de 70 pontos contra em torno de 30 pontos para os centésimos na cauda superior.This article analyzes the evolution of young Brazilians' cognitive abilities, as measured by the Program for International Student Assessment - Pisa. The results were very positive. Although it was observed a considerable increase in the percentage of youngsters able to complete the Pisa exam and, therefore, a strong decrease in selectivity, the Brazilian average rose 33 points over the past nine years. The relative position of the Brazil also increased, since the average score rose from 75% to 80% of the one found in the original group of countries that participated in this survey, in 2000. In distributive terms, the improvement was even more prominent in the bottom of the cognitive abilities' distribution: the hundredths in the lower tail distribution in Mathematics had their scores increased by about 70 points, against approximately 30 points found in the hundredths of the upper tail.

Mathematics curriculum in Ireland: The ınfluence of PISA on the development of project maths

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Liz Kirwan

2015-12-01

Full Text Available This article interrogates the extent to which the Organization for Economic Cooperation and Development (OECD through its Programme for International Student Assessment (PISA influenced the development of Project Maths, a new second-level mathematics education policy in Ireland. It argues that the Irish government, in its revision of mathematics education policy, was strongly influenced by PISA and that concern with the country’s ‘average’ placement in the international assessment was instrumental in defining the direction of the revision. It traces the genetic imprint of PISA on the development of curriculum policy, the new mathematics syllabus, its content and assessment. It argues that Project Maths sets out to follow closely the PISA conceptual framework. However, the analysis finds that Project Maths is not a mini-PISA but that the programme is comprised of two distinct approaches, on the one hand retaining the abstract, symbolic mathematics of sections of the pre-existing curriculum, while on the other emphasizing a PISA-like approach to pedagogy and to real-life problem solving.

PISA: LIGHTS AND SHADES

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Ángel Díez Baldero

2014-12-01

In this communication the authors approach the study of information which is from society knowledge of the mass media and the results of the test done by PISA (the importance of the family, the studies and expectations regarding to their children. Finally they approach the concept of EQUITY and the results that Spain has reached in this area.

Análisis comparativo de meningiomas cerebrales Grado I vs Grado II en una serie retrospectiva de 63 pacientes operados

Science.gov (United States)

Coppola, Federico; Campbell, Juan Iaconis; Herrero, Juan Manuel; Volpe, Emilio; Cersosimo, Tito

2017-01-01

Resumen Introducción: Los meningiomas Grado II tienen un comportamiento biológico más agresivo que los Grado I. A partir del año 2007, con los nuevos criterios de clasificación, la incidencia de meningiomas atípicos reportada aumentó hasta un 35%. Objetivo: Establecer diferencias entre los Meningiomas Grado I y II de la clasificación de la OMS, en lo que respecta a: grados de resección de Simpson, localización tumoral, necesidad de reintervención, tratamiento adyuvante, evolución y mortalidad. Métodos: Estudio retrospectivo de 63 pacientes operados entre el periodo 2009-2015. Variables analizadas: sexo, edad, grado histológico, localización, grado de resección quirúrgica, radioterapia adyuvante, mortalidad y evolución. Resultados: Se analizaron 63 pacientes: 51 Grado I y 12 Grado II de la clasificación de la OMS. La distribución por sexo no mostró diferencias entre meningiomas benignos y atípicos. Tampoco el grupo etario de presentación; mediana de 57 años. Un 55% de los meningiomas benignos se localizaron fuera de la base del cráneo versus el 91,6% de los meningiomas atípicos (P = 0.02). En el 74,5% de los meningiomas benignos se logró una resección total (Simpson I-II-III) versus el 58.3% para los atípicos (P = 0.3). Se reintervinieron el 33,3% de meningiomas atípicos en comparación con el 9.8% de los benignos (P = 0.03). Tuvieron una buena evolución el 86,2% de los benignos vs el 53,8% de los GII (P = 0.01). Realizaron radioterapia adyuvante el 33,3% de los meningiomas Grado II vs el 1,9% de los Grado I. Conclusiones: Los meningiomas atípicos cerebrales tienen peor pronóstico evolutivo que los Grado I de la OMS. Presentan una mayor tasa de reintervención y se localizan más frecuentemente fuera de la base del cráneo. La localización pareciera ser un factor de riesgo para el desarrollo de meningiomas atípicos. PMID:29142779

Science Literacy: How do High School Students Solve PISA Test Items?

Science.gov (United States)

Wati, F.; Sinaga, P.; Priyandoko, D.

2017-09-01

The Programme for International Students Assessment (PISA) does assess students’ science literacy in a real-life contexts and wide variety of situation. Therefore, the results do not provide adequate information for the teacher to excavate students’ science literacy because the range of materials taught at schools depends on the curriculum used. This study aims to investigate the way how junior high school students in Indonesia solve PISA test items. Data was collected by using PISA test items in greenhouse unit employed to 36 students of 9th grade. Students’ answer was analyzed qualitatively for each item based on competence tested in the problem. The way how students answer the problem exhibits their ability in particular competence which is influenced by a number of factors. Those are students’ unfamiliarity with test construction, low performance on reading, low in connecting available information and question, and limitation on expressing their ideas effectively and easy-read. As the effort, selected PISA test items can be used in accordance teaching topic taught to familiarize students with science literacy.

Seasonal nutrient dynamics and biomass quality of giant reed (Arundo donax L. and miscanthus (Miscanthus x giganteus Greef et Deuter as energy crops

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Nicoletta Nassi o Di Nasso

2011-08-01

Full Text Available The importance of energy crops in displacing fossil fuels within the energy sector in Europe is growing. Among energy crops, the use of perennial rhizomatous grasses (PRGs seems promising owing to their high productivity and their nutrient recycling that occurs during senescence. In particular, nutrient requirements and biomass quality have a fundamental relevance to biomass systems efficiency. The objective of our study was to compare giant reed (Arundo donax L. and miscanthus (Miscanthus × giganteus Greef et Deuter in terms of nutrient requirements and cellulose, hemicelluloses and lignin content. This aim was to identify, in the Mediterranean environment, the optimal harvest time that may combine, beside a high biomass yield, high nutrient use efficiency and a good biomass quality for second generation biofuel production. The research was carried out in 2009, in San Piero a Grado, Pisa (Central Italy; latitude 43°41’ N, longitude 10°21’ E, on seven-year-old crops in a loam soil characterised by good water availability. Maximum above-ground nutrient contents were generally found in summer. Subsequently, a decrease was recorded; this suggested a nutrient remobilisation from above-ground biomass to rhizomes. In addition, miscanthus showed the highest N, P, and K use efficiency, probably related to its higher yield and its C4 pathway. Regarding biomass quality, stable values of cellulose (38%, hemicelluloses (25% and lignin (8% were reported from July onwards in both crops. Hence, these components appear not to be discriminative parameters in the choice of the harvest time in the Mediterranean environment. In conclusion, our results highlighted that, in our environment, a broad harvest period (from late autumn to winter seems suitable for these PRGs. However, further research is required to evaluate the role of rhizomes in nutrient storage and supply during the growing season, as well as ecological and productive performances in marginal

The Science Education of the East Asian Regions--What We Can Learn from PISA

Science.gov (United States)

Lau, Kwok Chi

2014-01-01

The study has integrated the data from PISA 2006 to 2012 to give an overall picture of the cognitive and affective performances and pedagogy of East Asian regions on PISA scientific literacy. Attempts are made to account for their performances based on the PISA data and cultural characteristics. The cognitive science performance of East Asian…

SOCIALIZACIÓN PARENTAL Y CONDUCTAS ANTISOCIALES - DELICTIVAS EN ALUMNOS DE TERCERO, CUARTO Y QUINTO GRADOS DE SECUNDARIA

OpenAIRE

PORTOCARRERO PARDO, YESSICA; UNIVERSIDAD NACIONAL DEL ALTIPLANO

2014-01-01

ResumenEl objetivo principal de esta investigación fue determinar si existe relación entre Socialización Parental y Conductas Antisociales-Delictivas; siendo la población objetivo de la institución Educativa Pública Emblemático «San Pedro» en una muestra de 159 alumnos del tercero, cuarto y quinto grados de secundaria de ambos sexos, de 13 a 18 años. Instrumentos utilizados, La Escala de Estilos de Socialización Parental enAdolescentes (ESPA29) de Musitu & García, (2001), y el Cuestionari...

Las chicas en PISA y el marcado de casillas. Un examen de la perspectiva de los estudiantes sobre las pruebas PISA

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Gerry Mac Ruairc

2013-01-01

Full Text Available El artículo se mueve desde el análisis a nivel macro a la perspectiva de los estudiantes en las pruebas PISA. Mientras que está empíricamente bien establecido el alto nivel de correlación entre el nivel educativo y el nivel socioeconómico de los estudiantes, en este estudio el autor pretende analizar cómo los estudiantes socio-económicamente desfavorecidos reaccionan a las pruebas y participan en el proceso. Para ello, es importante tener en cuenta los puntos de vista de los propios estudiantes. Al examinar los puntos de vista de los estudiantes en las pruebas de PISA en un estudio de caso, el autor ofrece una visión de cómo un grupo de chicas de clase trabajadora, procedente de una escuela de un área urbana desfavorecida, experimentó en la evaluación PISA (2009 en la República de Irlanda. El análisis temático de las entrevistas y las transcripciones a los grupos focales revelaron dos cuestiones: para la mayoría de los estudiantes, pero especialmente para aquellos con necesidades educativas especiales, se sintieron estresados por el contenido y la dificultad de los ítems; por su parte, los estudiantes se limitaban simplemente a los requisitos exigidos de completar la prueba en el tiempo establecido, con sus implicaciones para su validez. Se concluye con la necesidad de un enfoque más proactivo de apoyo a los estudiantes y un modelo más matizado de la evaluación en las futuras pruebas PISA para tener en cuenta las diferencias de clase social.

Revisiting the Relationship between International Assessment Outcomes and Educational Production: Evidence From a Longitudinal PISA-TIMSS Sample

Science.gov (United States)

Carnoy, Martin; Khavenson, Tatiana; Loyalka, Prashant; Schmidt, William H.; Zakharov, Andrey

2016-01-01

International assessments, such as the Program for International Student Assessment (PISA), are being used to recommend educational policies to improve student achievement. This study shows that the cross-sectional estimates behind such recommendations may be biased. We use a unique data set from one country that applied the PISA mathematics test…

Steering the National: Exploring the Education Policy Uses of PISA in Spain

Science.gov (United States)

Engel, Laura C.

2015-01-01

This article presents findings from a recent study of the education policy uses and impact of international large-scale assessments, namely the Programme for International Student Assessment (PISA). The paper focuses on two overlapping dimensions of PISA's education policy use in the context of Spain. These include political dimensions, such as…

Using PISA as an International Benchmark in Standard Setting.

Science.gov (United States)

Phillips, Gary W; Jiang, Tao

2015-01-01

This study describes how the Programme for International Student Assessment (PISA) can be used to internationally benchmark state performance standards. The process is accomplished in three steps. First, PISA items are embedded in the administration of the state assessment and calibrated on the state scale. Second, the international item calibrations are then used to link the state scale to the PISA scale through common item linking. Third, the statistical linking results are used as part of the state standard setting process to help standard setting panelists determine how high their state standards need to be in order to be internationally competitive. This process was carried out in Delaware, Hawaii, and Oregon, in three subjects-science, mathematics and reading with initial results reported by Phillips and Jiang (2011). An in depth discussion of methods and results are reported in this article for one subject (mathematics) and one state (Hawaii).

PISA - komparativ evaluering i storskalaformat

DEFF Research Database (Denmark)

Dolin, Jens

2008-01-01

Internationale evalueringer som PISA sætter i stadig højere grad dagsordenen i den uddannelsespolitiske debat og har stor indflydelse på deltagerlandenes uddannelsespolitiske beslutninger. Men berettiger undersøgelserne til den ståhej, de ofte afstedkommer? Artiklen vil gå ind i krydsfeltet melle...

PREVALENCIA Y ABUNDANCIA DE Contracaecum sp. EN RUBIO Salminus affinis EN EL RÍO SINÚ Y SAN JORGE: DESCRIPCIÓN MORFOLÓGICA

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Sandra Pardo C

2007-08-01

Full Text Available Objetivo. Determinar la presencia de endoparásitos del género Anisakidae en rubioSalminus affinis en el medio natural. Materiales y métodos. Por medio de diseccióne inspección de las vísceras y la cavidad abdominal fueron analizados 45 ejemplarescapturados en los ríos Sinú (n=34 y San Jorge (n=11 (Córdoba, Colombia.Resultados. Larvas terciarias (L3 de nemátodos del género Contracaecum(Nematoda: Anisakidae fueron halladas en la cavidad visceral de rubio capturadosen ambos ríos. La prevalencia de este nemátodo en los dos ríos estudiados fuemayor de 95%. El grado de infestación fue leve en 94.1% de los rubios del río Sinú yel restante 5.9% tuvieron una infestación moderada; mientras que el 100% de loscasos del río San Jorge tuvieron un grado de infestación leve. Conclusiones. Losresultados permiten concluir que el rubio de los ríos Sinú y San Jorge se encuentrancon un grado de infestación leve del anisákido Contracaecum sp; el cual se encuentraalojado en el tracto digestivo y grasa mesentérica en estado larval terciario (L3.

Financial Literacy of 15-Year-Olds: Results from PISA 2012. Data Point. NCES 2014-102

Science.gov (United States)

Gonzales, Patrick; Kelly, Dana

2014-01-01

This Data Point uses data from the 2012 administration of the Program for International Student Assessment (PISA) financial literacy assessment. PISA is an international assessment that measures 15-year-old students' reading, mathematics, and science literacy and, in 2012, general problem solving and financial literacy. PISA is coordinated by the…

Kosovo’s Low Performance in PISA 2015: An Explanation From a Socioeconomic Perspective

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Arif Shala

2018-02-01

Full Text Available This paper will analyze the performance of Kosovar students in PISA 2015 and explain the low performance from a socioeconomic standpoint. On its first participation in this assessment, Kosovo was ranked among the three lowest achieving countries. It is the argument of this paper that parental education and home possessions, both measures of socioeconomic status, determined the performance of students in Kosovo. There is compelling evidence that links student achievement and socioeconomic factors, a link that is well established in research. PISA is the first study to link student achievement in international assessments and socioeconomic factors in Kosovo and this paper is the first one research this link in the case of Kosovo. According to the PISA results, the higher the education levels of the primary caregiver, the higher the achievement of the student. In terms of home possessions, the higher the numbers of resources (Internet, computers etc. the higher the student achievement in mathematics, reading and science. In light of this evidence, any policy that fails to account for the impact of familial socioeconomic status will not improve the education quality in Kosovo.

Relevancia de los grados de Simpson en la resección de meningiomas grado I

Science.gov (United States)

Ajler, Pablo; Beltrame, Sofía; Massa, Daniela; Tramontano, Julian; Baccanelli, Matteo; Yampolsky, Claudio

2017-01-01

Resumen Objetivo: Comparar el porcentaje de recurrencias en pacientes con meningiomas grado I de la OMS sometidos a exéresis microquirúrgica. Introducción: En 1957 Simpson estandarizó 5 grados de resección quirúrgica para los meningiomas intracraneanos y el porcentaje de recurrencia relacionado con cada uno, estableciendo el paradigma de que la remoción agresiva de estos tumores junto con fragmentos durales y óseos era necesario para alcanzar la curación. Los avances principalmente en Resonancia Magnética, anatomía patológica y técnica microqurúrgica nos llevan a plantear la relevancia actual de dicha clasificación. Métodos: Se realizó una revisión retrospectiva de los pacientes operados de meningiomas grado I entre Febrero de 2006 y Diciembre de 2015. Se analizaron las imágenes pre y postoperatorias y la anatomía patológica. Las variables se relacionaron mediante un análisis estadístico multivariado estableciendo como estadísticamente significativo una P < 0.05. Resultados: No se objetivó una diferencia estadísticamente significativa entre el número de recidivas y el grado de resección tumoral según Simpson I, II, III o IV (P = 0,3117). Esto puede afirmarse para los grados Simpson I y II en donde el número de pacientes incluidos en la muestra (n) fue alto. Al analizar como factor de recurrencia la localización tumoral tampoco se encontró una diferencia significativa en cuanto al porcentaje de recidivas entre aquellos tumores localizados en la convexidad, base de cráneo y parasagitales (P = 0,2203). Conclusión: Para los meningiomas grado I la exéresis Simpson I no presenta diferencias significativas con la Simpson II en cuanto a la recurrencia tumoral, por lo que aumentar la morbilidad del procedimiento no tendría justificación. Un replanteo de la escala de resección debería idearse teniendo en cuenta la clasificación de la OMS. PMID:29142775

Bias assessment and prevention in non-cognitive outcome measures in PISA questionnaires

NARCIS (Netherlands)

van de Vijver, Fons; He, Jia; Kuger, S.; Klieme, E.; Jude, N.; Kaplan, D.

2016-01-01

Assessing students’ personal characteristics, as well as the structures and processes of teaching and learning, is an integral part of the Programme for International Student Assessment (PISA). Providing input for solid evidence-based educational policies, one of the main aims of PISA, creates huge

Relative Private School Effectiveness in the Netherlands: A Reexamination of PISA 2006 and 2009 data

OpenAIRE

Cornelisz, Ilja

2013-01-01

An ongoing question is whether private (religious) schools provide better education than public schools. This study re- addresses this issue, using PISA 2006 and 2009 data for the Netherlands and three different methodologies. Overall, there is no consistent pattern. Results based on ordinary least squares and propensity score matching suggest private school attendance is positively associated with mathematics achievement, but only for PISA 2006. Instead, the results generated by an instrumen...

The Role of PISA in Shaping Hegemonic Educational Discourses, Policies and Practices: The Case of Spain

Science.gov (United States)

Bonal, Xavier; Tarabini, Aina

2013-01-01

The aim of this article is to analyse the direct and indirect effects that PISA generates in the orientation of educational policies and reforms in Spain and the ways in which PISA data and results are used in political discourses, at both national and sub-national levels. The main hypothesis of the article is that PISA results have played a key…

PISA - An Example of the Use and Misuse of Large-Scale Comparative Tests

DEFF Research Database (Denmark)

Dolin, Jens

2007-01-01

The article will analyse PISA - particularly the part dealing with science - as an example of a major comparative evaluation. PISA will first be described and then analysed on the basis of test theory, which will address some detailed technical aspects of the test as well as the broader issue...

Uso de las fichas didácticas en v grado de la educación primaria: visión de los educadores en San Ramón

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Alicia Alfaro Valverde

2003-01-01

Full Text Available Este artículo es parte de un proceso de investigación desarrollado en el año 2001 en dos circuitos escolares de la Dirección Regional de Educación de San Ramón. Presenta los resultados obtenidos de los educadores de V grado en relación con el uso de las fichas didácticas en Educación Primaria. La ficha didáctica es una técnica que se propone desde finales del siglo XIX, con el objetivo de individualizar la enseñanza y sigue manteniendo vigencia hasta el día de hoy. Por tal razón nos dimos a la tarea de investigar la concepción que manejan los educadores acerca de las fichas didácticas, las características, tipos, principios y valores que se pueden fortalecer, frecuencia con que se utilizan, razones de su uso, respuesta de los niños, ventajas, desventajas y sugerencias dadas por los educadores. Termina el artículo con algunas conclusiones en relación con la temática abordada

Oferta académica de la URACCAN en el nivel de grado para el quinquenio 2014-2018

OpenAIRE

Letisia Castillo; Leonor Ruiz; Marlon Peralta; Alba Luz Dávila; Ivania Simons; Juan Francisco Perera Lumbí

2013-01-01

Esta investigación tuvo como propósito adecuar la oferta académica de la URACCAN, basada en las realidades y necesidades de formación profesional en el nivel de grado de la Costa Caribe de Nicaragua para el quinquenio 2014-2018. Se desarrolló en las Regiones Autónomas, específicamente en los municipios donde la Universidad tiene presencia (Bluefields, Laguna de Perlas, Nueva Guinea, El Coral, Almendro, San Miguelito, Siuna, Rosita, Bonanza, Waslala, Bilwi y Waspam). Se trabajó con los estudia...

Experiments and Modelling Techniques for Heat and Mass Transfer in Light Water Reactors

International Nuclear Information System (INIS)

Ambrosini, W.; Bucci, M.; Forgione, N.; Manfredini, A.; Oriolo, F.

2009-01-01

The paper summarizes the lesson learned from theoretical and experimental activities performed at the University of Pisa, Pisa, Italy, in past decades in order to develop a general methodology of analysis of heat and mass transfer phenomena of interest for nuclear reactor applications. An overview of previously published results is proposed, highlighting the rationale at the basis of the performed work and its relevant conclusions. Experimental data from different sources provided information for model development and assessment. They include condensation experiments performed at SIET (Piacenza, Italy) on the PANTHERS prototypical PCCS module, falling film evaporation tests for simulating AP600-like outer shell spraying conditions, performed at the University of Pisa, experimental data concerning condensation on finned tubes, collected by CISE (Piacenza, Italy) in the frame of the INCON EU Project, and experimental tests performed in the CONAN experimental facility installed at the University of Pisa. The experience gained in these activities is critically reviewed and discussed to highlight the relevant obtained conclusions and the perspectives for future work

Resonance ionization spectroscopy of Europium The first application of the PISA at ISOLDE-RILIS

CERN Document Server

AUTHOR|(CDS)2099873; Marsh, Bruce Alan

The following work has been carried out at the radioactive ion beam facility ISOLDE at CERN. A compact atomic beam unit named PISA (Photo Ionization Spectroscopy Apparatus) has been implemented as a recent addition to the laboratory of the Resonance Ionization Laser Ion Source (RILIS). The scope of this thesis work was to demonstrate different applications of the PISA, using the existing and highly developed laser setup of the RILIS installation. In a demonstration of the suitability of PISA for ionization scheme development, a new ionization scheme for Europium has been developed. This resulted in the observation of several new autoionizing states and Rydberg series. Through the analysis of the observed Rydberg resonances a refined value of $45734.33(3)(3)$ cm$^{-1}$ for the ionization potential of the europium atom has been determined. In addition this thesis reports on the feasibility of the use of the PISA as a RILIS performance monitoring device during laser ion source operations. Finally the present wor...

Validating the Interpretations of PISA and TIMSS Tasks: A Rating Study

Science.gov (United States)

Rindermann, Heiner; Baumeister, Antonia E. E.

2015-01-01

Scholastic tests regard cognitive abilities to be domain-specific competences. However, high correlations between competences indicate either high task similarity or a dependence on common factors. The present rating study examined the validity of 12 Programme for International Student Assessment (PISA) and Third or Trends in International…

Tracing the French Policy PISA Debate: A Policy Configuration Approach

Science.gov (United States)

Pons, Xavier

2016-01-01

This article traces the evolution of the French policy PISA debate from 2001 to 2014 by analysing the results of two original qualitative researches. Theoretically, this debate is the outcome of specific policy configurations, which predetermine its scope, content and effectiveness. These configurations are themselves described through their…

Leyendo los lenguajes de PISA críticamente: un análisis a través del inmigrante

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Ligia López

2013-01-01

Full Text Available Este artículo es una invitación a notar. Leer los lenguajes de PISA de forma crítica nos permite entender hasta cierto punto las razones que fundamentan los esfuerzos de medición estandarizada. Así, el artículo, en primer lugar, analiza los lenguajes sobre la comparación, el desarrollo y equidad y los números que PISA emplea para justificar su proyecto. Segundo discute un caso en particular donde PISA se entiende como un gesto celebratorio para incluir al “migrante” y las limitaciones que tiene la prueba para dar una respuesta apropiada sobre cómo resolver el problema de exclusión. Tercero el artículo ofrece una lectura de las preguntas de la prueba donde se pone el énfasis en los lenguajes de PISA relacionados principalmente con el desarrollo y la equidad. Finalmente, y en forma de conclusión, el migrante es discutido no como objeto minoritario sino como elemento que puede desencadenar diferentes tipos de relaciones en/con el mundo de la educación.

Competencia matemática: relación con el proyecto PISA

OpenAIRE

Lupiáñez, José Luis

2012-01-01

Análisis del papel de la noción de competencia matemática en la educación matemática, y su relación con el diseño y selección de tareas. También se analiza esta noción en el marco del proyecto PISA y se resumen los elementos teóricos básicos de PISA 2012.

PREFACE: SANS-YuMO User Meeting at the Start-up of Scientific Experiments on the IBR-2M Reactor: Devoted to the 75th anniversary of Yu M Ostanevich's birth

Science.gov (United States)

Gordely, Valentin; Kuklin, Alexander; Balasoiu, Maria

2012-03-01

The Second International Workshop 'SANS-YuMO User Meeting at the Start-up of Scientific Experiments on the IBR-2M Reactor', devoted to the 75th anniversary of the birth of Professor Yu M Ostanevich (1936-1992), an outstanding neutron physicist and the founder of small-angle neutron scattering (field, group, and instrument) at JINR FLNPh, was held on 27-30 May at the Frank Laboratory of Neutron Physics. The first Workshop was held in October 2006. Research groups from different neutron centers, universities and research institutes across Europe presented more than 35 oral and poster presentations describing scientific and methodological results. Most of them were obtained with the help of the YuMO instrument before the IBR-2 shutdown in 2006. For the last four years the IBR-2 reactor has been shut down for refurbishment. At the end of 2010 the physical launch of the IBR-2M reactor was finally realized. Nowadays the small-angle neutron scattering (SANS) technique is applied to a wide range of scientific problems in condensed matter, soft condensed matter, biology and nanotechnology, and despite the fact that there are currently over 30 SANS instruments in operation worldwide at both reactor and spallation sources, the demand for beam-time is considerably higher than the time available. It must be remembered, however, that as the first SANS machine on a steady-state reactor was constructed at the Institute Laue Langevin, Grenoble, the first SANS instrument on a 'white' neutron pulsed beam was accomplished at the Joint Institute for Nuclear Research at the IBR-30 reactor, beamline N5. During the meeting Yu M Ostanevich's determinative and crucial contribution to the construction of spectrometers at the IBR-2 high-pulsed reactor was presented, as well as his contribution to the development of the time-of-flight (TOF) small-angle scattering technique, and a selection of other scientific areas. His leadership and outstanding scientific achievements in applications of the

Relación entre la Inteligencia Emocional y la Capacidad de Atención - Concentración en estudiantes de 2º grado de educación secundaria de la I.E. “Gran Amauta” N° 3037, del Distrito de San Martín de Porres, 2014.

OpenAIRE

Taira Oshiro, Stephanie Chiemy

2015-01-01

Lo que se realizó en esta investigación fue determinar la relación que existe entre la Inteligencia Emocional y la capacidad de Atención - Concentración en los estudiantes de segundo grado de secundaria de la I.E “Gran Amauta” distrito de San Martin de Porres, 2014. Esta investigación corresponde al enfoque cuantitativo. Es una investigación básica sustantiva que se ubica en el nivel descriptivo. El diseño de la investigación ha sido correlacional de corte transversal, que e...

PISA: números, estandarización de la conducta y la alquimia de las materias escolares

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Thomas S. Popkewitz

2013-01-01

Full Text Available Este artículo examina la red de prácticas que confieren inteligibilidad a la organización del conocimiento de las materias escolares que hace PISA. El programa PISA es tratado como un acontecimiento histórico. Su estudio consiste en hacer visible los principios que ordenan y clasifican los objetos “vistos” y que actúan sobre el “conocimiento práctico” de las materias escolares. La política de PISA, a mi juicio, son los principios que rigen lo que los chicos deberían conocer, cómo ese conocimiento se hace posible, y el estudio de la inclusión y exclusión incorporadas en estas prácticas. La primera parte analiza históricamente la transformación de los números en “hechos”, una presunción que posibilita las comparaciones de PISA. En la segunda parte, dirige la atención a los principios de las materias escolares que ordenan y clasifican los “hechos” de las mediciones de PISA.

THE DEBATE CONCERNING THE PISA SURVEYS IN FRANCE

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Eguzki Urteaga

2010-02-01

Full Text Available The international program for the follow-up of the knowledge of the pupils, known as PISA (Programme for International Student Assessment, does not enjoy the French observer. Published every three years, his evaluations of the educational systems of thirty countries of the OECD, and nowadays of other fifty countries, have a methodological recognized quality and resist to the majority of the objections that are directed for him. Not uselessly, they continue being widely ignored in France where they try to discredit them very often. The French reticence towards this research come from medium or including mediocre classification in which places the Hexagon in the three areas evaluated by PISA: comprehension of writing, mathematics and scientific culture. If the educational level rises, the differences between pupils increase.

Lessons Learned from PISA: A Systematic Review of Peer-Reviewed Articles on the Programme for International Student Assessment

Science.gov (United States)

Hopfenbeck, Therese N.; Lenkeit, Jenny; El Masri, Yasmine; Cantrell, Kate; Ryan, Jeanne; Baird, Jo-Anne

2018-01-01

International large-scale assessments are on the rise, with the Programme for International Student Assessment (PISA) seen by many as having strategic prominence in education policy debates. The present article reviews PISA-related English-language peer-reviewed articles from the programme's first cycle in 2000 to its most current in 2015. Five…

An Analysis of Students Error In Solving PISA 2012 And Its Scaffolding

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Yurizka Melia Sari

2017-08-01

Full Text Available Based on PISA survey in 2012, Indonesia was only placed on 64 out of 65 participating countries. The survey suggest that the students’ ability of reasoning, spatial orientation, and problem solving are lower compare with other participants countries, especially in Shouth East Asia. Nevertheless, the result of PISA does not elicit clearly on the students’ inability in solving PISA problem such as the location and the types of student’s errors. Therefore, analyzing students’ error in solving PISA problem would be essential countermeasure to help the students in solving mathematics problems and to develop scaffolding. Based on the data analysis, it is found that there are 5 types of error which is made by the subject. They consist of reading error, comprehension error, transformation error, process skill error, and encoding error. The most common mistake that subject do is encoding error with a percentage of 26%. While reading is the fewest errors made by the subjects that is only 12%. The types of given scaffolding was explaining the problem carefully and making a summary of new words and find the meaning of them, restructuring problem-solving strategies and reviewing the results of the completion of the problem.

PISA Proficiency Scores Predict Educational Outcomes

Science.gov (United States)

Fischbach, Antoine; Keller, Ulrich; Preckel, Franzis; Brunner, Martin

2013-01-01

The "Programme for International Student Assessment" (PISA) examines the extent to which 15-year-old students who are near the end of compulsory education have acquired some of the competencies essential for participation in the labor market and society. Given that this participation hinges on educational attainment, it is crucial to…

Algunos problemas de interpretación en la teoría de precios de producción de Piero Sraffa

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Guillén Romo Hector

1981-12-01

Full Text Available Aunque con el término "escuela neo-ricardiana" o "escuela de Cambridge" algunas veces se designa a las contribuciones de Joan Robinson, Nicholas Kaldor, Luigi Pasínetti y algunos otros á la teoría del crecimiento, en este ensayo nos referiremos casi exclusivamente a la teoría neo-ricardíana de los precios, tal y como ha sido elaborada por Piero Sraffa. Los fundamentos metodológicos de la escuela neo-ricardiana
pueden ser encontrados en las obras de V. K. Dimitriev y L. Bortkiewicz, autores de finales del Siglo XIX e inicios del XX. La importancia de estos autores se ha visto particularmente incrementada en los últimos años, tras la publicación de la obra de Sraffa. La escuela neo-ricardiana puede ser analizada desde varios puntos de vista según que se consideren sus vínculos con la teoría marxista del valor o con la teoría neoclásica, ya sea en su versión vulgar (Jevons, Menger, Marshall o en su versión del equilibrio económico general (Arrow, Hahn, Malinvaud.

Evaluación de competencias matemáticas: proyecto PISA/OCDE 2003

OpenAIRE

Rico, Luis

2004-01-01

Las ideas que aquí se presentan son un resumen e interpretación de las publicadas en el capítulo Mathematics Literacy, incluido en el documento editado en 2003 por la OCDE The PISA 2003 Assessment Framework y aparecen en el documento Aproximación a un modelo de evaluación: el proyecto PISA 2000, que ha sido publicado por el Ministerio de Educación, Cultura y Deportes.

The students' ability in the mathematical literacy for uncertainty problems on the PISA adaptation test

Science.gov (United States)

Julie, Hongki; Sanjaya, Febi; Anggoro, Ant. Yudhi

2017-08-01

One of purposes of this study was to describe the solution profile of the junior high school students for the PISA adaptation test. The procedures conducted by researchers to achieve this objective were (1) adapting the PISA test, (2) validating the adapting PISA test, (3) asking junior high school students to do the adapting PISA test, and (4) making the students' solution profile. The PISA problems for mathematics could be classified into four areas, namely quantity, space and shape, change and relationship, and uncertainty. The research results that would be presented in this paper were the result test for uncertainty problems. In the adapting PISA test, there were fifteen questions. Subjects in this study were 18 students from 11 junior high schools in Yogyakarta, Central Java, and Banten. The type of research that used by the researchers was a qualitative research. For the first uncertainty problem in the adapting test, 66.67% of students reached level 3. For the second uncertainty problem in the adapting test, 44.44% of students achieved level 4, and 33.33% of students reached level 3. For the third uncertainty problem in the adapting test n, 38.89% of students achieved level 5, 11.11% of students reached level 4, and 5.56% of students achieved level 3. For the part a of the fourth uncertainty problem in the adapting test, 72.22% of students reached level 4 and for the part b of the fourth uncertainty problem in the adapting test, 83.33% students achieved level 4.

Chemical-physical parameters of atmospheric precipitations in the Pisa urban area

International Nuclear Information System (INIS)

Paradossi, C.; Marchini, F.

1998-01-01

In the work the major chemical-physical parameters of the rain collected in May 1992 - May 1993 period in Pisa are studied and discussed. The ph analysis was particular interesting. Indeed sometimes it reached values between 4.5 and 5.0. Also the ions examined although they did not reach values supposed to cause damage, were subjected to monthly variations. This paper confirms previously results. Pisa although not being considered an industrial area is subjected to pollutant acid rains [it

Como güelfos y gibelinos: los colegios de San Bernardo y San Antonio Abad en el Cuzco durante el siglo XVII

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Guibovich Pérez, Pedro M

2006-04-01

Full Text Available This article deals with the conflicts that involved the San Bernardo and San Antonio schools all along the seventeenth century. The author proposes a new approach to explain the social history of colonial Cuzco. He mantains that the root of the confrontation has to do with the privileges that enjoy the jesuits in the provision of academical degrees, a basic requirement to obtain appointments in the civil and eclesiastical administration. To understand this social dinamic, he reconstructs the institutional history of both schools, and reveals the interests that defend the main actors of this secular conflict.

Los conflictos que enfrentaron a los colegios de San Bernardo y San Antonio Abad a lo largo del siglo XVII es el tema central de estudio de este ensayo. El autor propone una nueva lectura a este episodio de la historia social del Cuzco colonial. Sostiene que en la raíz de los enfrentamientos estuvo el privilegio que gozaban los jesuitas para la concesión de grados académicos, requisitos fundamentales para obtener cargos en la administración civil y eclesiástica. Para entender la dinámica social, el autor reconstruye la historia institucional de los colegios y los intereses en juego de los principales protagonistas del secular conflicto.

Policy Development for Grey Literature Resources. An Assessment of the Pisa Declaration

OpenAIRE

Savić, Dobrica (IAEA-NIS); Farace, Dominic J. (GreyNet); Frantzen, Jerry (GreyNet); Biagioni, Stefania (ISTI-CNR); Carlesi, Carlo (ISTI-CNR); Gruttemeier, Herbert (Inist-CNRS); Stock, Christiane (Inist-CNRS); Puccinelli, Roberto (CNR); GreyNet, Grey Literature Network Service

2017-01-01

In the spring of 2014, a workshop took place at the Italian National Council of Research in Pisa. The topic of this event dealt with policy development for grey literature resources. Some seventy participants from nine countries took an active part in the workshop – the outcome of which produced what is today known as the Pisa Declaration. This fifteen point document arising from the input of those who attended the workshop sought to provide a roadmap that would help to serve diverse communit...

Policy Development for Grey Literature Resources: An Assessment of the Pisa Declaration

OpenAIRE

Savic, Dobrica; Farace, Dominic; Frantzen, Jerry; Biagioni, Stefania; Carlesi, Carlo; Gruttemeier, Herbert; Stock, Christiane

2017-01-01

In the spring of 2014, a workshop took place at the Italian National Council of Research in Pisa1. The topic of this event dealt with policy development for grey literature resources. Some seventy participants from nine countries took an active part in the workshop - the outcome of which produced what is today known as the Pisa Declaration2. This fifteen point document arising from the input of those who attended the workshop sought to provide a roadmap that would help to serve diverse commun...

[Pediatric history in Pisa and the birth of world pediatrics].

Science.gov (United States)

Farnetani, I; Farnetani, F

2009-10-01

The University of Pisa was the first in the world to nominate a professor of pediatirics. It was Gaetano Palloni who was nominated professor of ''children diseases'' on April 8(th), 1802 and was assigned to one of the two branch offices of the Pisan University, the one in Florence. He was assigned to ''Ospedale degli Innocenti'' where he taught and also supervised the clinical part. In 1923, he was nominated director of the Gennaro Fiore paediatric clinic and stayed there until 1952 when Augusto Gentili took over. In half a century there were only two professors and this didactic continuity made it possible for Pisa to become one of the greatest Italian pediatric schools.

The OECD and the Expansion of PISA: New Global Modes of Governance in Education

Science.gov (United States)

Sellar, Sam; Lingard, Bob

2014-01-01

This paper examines the expansion of the OECD's Programme for International Student Assessment (PISA) and associated growth in the influence of the OECD's education work. PISA has become one of the OECD's most successful "products" and has both strengthened the role of the Directorate for Education within the organization and enhanced…

Investigating Secondary School Students' Difficulties in Modeling Problems PISA-Model Level 5 and 6

Science.gov (United States)

Edo, Sri Imelda; Hartono, Yusuf; Putri, Ratu Ilma Indra

2013-01-01

The chart of Indonesian student of mathematical ability development in Program for International Student Assessment (PISA) event during the last 4 periods shows an unstable movement. PISA aims to examine the ability of children aged 15 years in reading literacy, mathematics literacy, and science literacy. The concept of mathematical literacy is…

Historia de España para estudiantes de grado de periodismo: aprendizaje integrado de contenidos y lenguas

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Cayetano Fernández Romero

2012-04-01

Full Text Available En este trabajo, se expone un modelo de actividad AICLE con el objetivo de formar a futuros profesionales de la comunicación no sólo en contenidos sino también en la adquisición de la riqueza cultural y lingüística que aporta conocer lenguas extranjeras. El ejercicio, que está previsto para el Grado de Periodismo de la Universidad San Jorge (Zaragoza en el curso académico 2009-2010, tiene como temática principal la participación extranjera en la Guerra Civil española a partir de documentos de naturaleza periodística extraídos de El País en su versión inglesa. En la primera parte, se justifica la importancia de la utilización de las lenguas extranjeras en la educación superior y a continuación, se presenta los objetivos, fuentes, metodología, desarrollo y evaluación de la práctica.

Montenegro in the PISA Study

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Saša Milić

2011-01-01

Full Text Available Montenegro, a country that has been in transition for the last two decades, is trying intensively to restructure its socioeconomic system and reform the main social systems, such as the education system, health care, the judicial system, the social welfare system, etc. Numerous strategic documents have been adopted in the past decade emphasising the importance of making the country’s abundant natural resources functional, and of making the utilisation of human resources in the country significantly more effective. In order to achieve improvements in one of the key areas of Montenegrin development, human resources, a reform of the entire education system was launched in the first years of 21st century. The processes of joining the European Union, whose fundamental principles are the free movement of people, goods, services and capital, have also significantly increased the need to raise the quality of the educationof Montenegro’s citizens and to improve the competitiveness of the Montenegrin workforce in the labour market. However, we believe that the results of PISA testing in 2006 and 2009 suggest that Montenegro is far from the proclaimed goals of reform in the field of education, and that for the coming years and decades considerable attention should be devoted to improvement of the education system. PISA tests should be understood in a much wider context, not only as a reflection of curricular reform and standards of verification and assessment of students’ knowledge, but rather as a set of guidelines that indicate the direction in which to develop and improve the education system, so that society can really ‘invest’ in the education of young people.It is a very problematic fact that from the time of testing in 2009 until April 2011, nobody in Montenegro published any technical or scientific analysis of the success, or rather failure, of Montenegrin students in PISA testing. We believe that the use of this study should be

Competencias profesionales y empleo en el futuro periodista: el caso de los estudiantes de periodismo de la Universidad San Pablo CEU

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Javier Sierra Sánchez

2012-04-01

Full Text Available La Universidad española ha sufrido una gran transformación desde su adaptación al EEES. El Plan Bolonia propone un replanteamiento de la misión que debe cumplir la Universidad acercando dicha institución a los intereses y necesidades de la empresa y de la sociedad. Uno de los pilares básicos de estos cambios es el que hace referencia a la formación del alumno por competencias. Presentamos un trabajo de investigación científica enfocado en dos aspectos: la adquisición de competencias profesionales en los alumnos de la licenciatura de Periodismo de la Universidad San Pablo CEU y  la importancia que otorgan a diferentes aspectos de un empleo. Éste último aspecto, partiendo del Informe Réflex de ANECA “El profesional flexible en la Sociedad del Conocimiento” establecemos una comparativa entre los resultados allí obtenidos y el caso particular de los alumnos de Periodismo de la San Pablo CEU. Para descubrir estos aspectos presentamos un trabajo empírico para conocer en qué medida los alumnos de último curso de la licenciatura (que no de grado de la Universidad San Pablo CEU han adquirido las competencias profesionales que se reflejan en el Libro Blanco de ANECA de los títulos de grado en Comunicación.Este estudio que presentamos nace con vocación de continuidad en un doble sentido: ser un indicador de la calidad de las enseñanzas que reciben los alumnos de Periodismo de la San Pablo CEU y conocer en un futuro próximo (cuando salga la primera promoción de graduados si existe una diferencia significativa entre los alumnos que cursaron la licenciatura y los nuevos graduados fruto de la reforma universitaria. De este modo, podremos conocer hasta qué punto y qué grado se ha acometido en la Universidad San Pablo CEU esa transformación que conlleva el Plan Bolonia en su sentido más profundo de la reforma.

Australia's Indigenous Students in PISA 2000: Results from an International Study. ACER Research Monograph No. 59

Science.gov (United States)

De Bortoli, Lisa; Cresswell, John

2004-01-01

In 2000, Australia took part in the inaugural OECD (Organisation for Economic Cooperation and Development) Programme for International Student Assessment (PISA). Approximately 500 Australian Indigenous students were assessed in PISA, providing a representative sample of the 15-year-old Indigenous population. This report presents the analysis of…

AS "DESCRIÇÕES FINAS" DAS ANÁLISES SECUNDÁRIAS DO PISA

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Radhika Gorur

Full Text Available RESUMO: Os métodos da OCDE e do PISA para influenciar a política por meio dos rankings e do aconselhamento político estão bem documentados. Este artigo é especulativo e explora as implicações mais sutis e talvez mais profundas da evolução da base de dados do PISA, e da análise secundária que é realizada utilizando-a. Com base em conceitos dos Science and Technology Studies , este artigo sugere que o PISA reduz "objetos ontologicamente luxuriantes" em "objetos ontologicamente empobrecidos" por meio da padronização e simplificação. Libertos das suas amarras e traduzidos em inscrições, esses objetos ontologicamente empobrecidos são promíscuos, combinando-se livremente, de diferentes formas, com outros tantos objetos, através de espaços e tempos, tendo em vista a produção de lições para as políticas e as práticas. Neste artigo, sugiro que, embora essas relações promíscuas possam produzir afirmações matematicamente defensáveis, esses resultados podem ser ontologicamente um absurdo. Utilizando dados de entrevistas com especialistas da avaliação e com políticos, bem como análises secundárias publicadas, este artigo introduz algumas ideias sobre como podemos compreender o banco de dados do PISA e o seu uso em análises secundárias. O artigo argumenta que a análise secundária não é um exercício meramente matemático ou técnico, mas sociotécnico, e que, dada a sua influência e o seu alcance, intenta abrir as caixas negras do banco de dados do PISA e as práticas das análises secundárias, disponibilizando-as para uma análise e uma crítica sociológica e filosófica mais ampla.

Os instrumentos de regulação baseados no conhecimento: o caso do programme for international student assessment (PISA Knowledge-based regulation tools (KRT: the programme for international student assessment (PISA case

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Estela Costa

2009-12-01

Full Text Available Este artigo inscreve-se na temática dos novos modos de regulação da educação, em particular nos instrumentos de políticas públicas. No quadro da instrumentação da acção pública, a atenção recai nos instrumentos de regulação baseados no conhecimento (Knowledge-based Regulation Tools [KRT]. Na verdade, a economia mundial fundamenta-se, cada vez mais, no conhecimento, o qual emerge como instrumento de política, regulando os actores sociais e legitimando a decisão política. O Programme for International Student Assessment (PISA, da Organização para Cooperação e Desenvolvimento Económico (OCDE, foi o instrumento escolhido como passível de configurar um KRT. O texto baseiase em seis estudos de caso, assentes em entrevistas e análise documental. Intentando na circulação e no uso do PISA, na Bélgica, Escócia, França, Hungria, Portugal e Roménia, procuramos demonstrar que o PISA se afirma como um KRT, provando a relação circular entre conhecimento e política, dado que, como instrumento de política, produz conhecimento e, como instrumento científico, produz política.This text focuses on the study of a KRT (Knowledgebased Regulation Tool, within the wider framework of the new modes of regulation in education, and use of instruments in public action. The world economy is gradually more knowledge-based. Knowledge emerges as a tool for policy-making and for regulating social actors, and legitimating the political decision-making. We choose the OECD's Program for International Student Assessment (PISA as an example of a KRT. The article is based on six case-studies, with interviews and document analysis. Our goal was to study the circulation and use of PISA, in Belgium, Scotland, France, Hungary, Portugal and Romania, trying to show that PISA is indeed a KRT, thus proving the circular relationship between knowledge and policy, because as a policy instrument it produces knowledge, and as a scientific tool it produces policy.

Labour Market and Flexibility. A logistic regression model to estimate the likelihood of being atypical for a woman employed in Pisa

OpenAIRE

Paola Meozzi

2014-01-01

How do demographic and educational factors affect a woman’s occupational status? How common is non standard employment for different labour force groups and in different sectors of the labour market? This paper aims at analysing the impact of different “structural variables” in terms of risk for a woman working in the province of Pisa to be employed with a non-standard contract. Determinants of women’s atypical employment in Pisa are studied using microdata for approximately 425.000 women emp...

The Politics of PISA: The Media, Policy and Public Responses in Norway and England

Science.gov (United States)

Hopfenbeck, Therese N.; Görgen, Kristine

2017-01-01

Using the PISA 2015 releases in Norway and England, this article explores how PISA has been presented in the media and how the policy level has responded to the results. England will be used as an example for comparison. The article presents early media responses from the 20 most circulated daily newspapers in the two countries and discusses them…

Errare Humanum Est! A Socio-Psychological Approach to a "Climbing Mount Fuji" PISA Question

Science.gov (United States)

Selleri, Patrizia; Carugati, Felice

2018-01-01

There is a consensus that the items proposed by the Program for International Student Assessment (PISA) program allow us to focus on the outcomes of the processes of appropriation and transformation of learning tools at the end of compulsory schooling, particularly regarding the key competencies for lifelong learning and citizenship in digital…

PISA 2015 Assessment and Analytical Framework: Science, Reading, Mathematic, Financial Literacy and Collaborative Problem Solving

Science.gov (United States)

OECD Publishing, 2017

2017-01-01

What is important for citizens to know and be able to do? The OECD Programme for International Student Assessment (PISA) seeks to answer that question through the most comprehensive and rigorous international assessment of student knowledge and skills. The PISA 2015 Assessment and Analytical Framework presents the conceptual foundations of the…

Financial Literacy of 15-Year-Olds: Results from PISA 2015. Data Point. NCES 2017-086

Science.gov (United States)

Gonzales, Patrick; Sen, Anindita

2017-01-01

On May 24, the National Center for Education Statistics released Financial Literacy of 15-year-olds: Results from PISA 2015. The PISA assessment of financial literacy measured students' knowledge and understanding of fundamental elements of the financial world, including financial concepts, products, and risks, and their ability to apply what they…

Perceived Quality of Educational Technology Matters: A Secondary Analysis of Students' ICT Use, ICT-Related Attitudes, and PISA 2012 Test Scores

Science.gov (United States)

Petko, Dominik; Cantieni, Andrea; Prasse, Doreen

2017-01-01

In large-scale international assessments such as the Programme for International Student Assessment (PISA), the Trends in International Mathematics and Science Study (TIMSS), or the Progress in International Reading Study (PISA), research has struggled to find positive associations between the frequency of educational technology use in schools and…

TIMSS and PISA Impact--The Case of Jordan

Science.gov (United States)

Ababneh, Emad; Al-Tweissi, Ahmad; Abulibdeh, Khattab

2016-01-01

Jordan has participated in international large-scale assessments (LSAs) since 1991 and in most of the Trends in International Mathematics and Science Studies (TIMSS) as well as the Programme for International Student Assessments (PISA). After a short description of education system and policy-making context in the country, this article provides an…

"Why bother so incredibly much?": student perspectives on PISA science assignments

Science.gov (United States)

Serder, Margareta; Jakobsson, Anders

2015-09-01

Large-scale assessment, such as the Programme for International Assessment (PISA), plays an increasingly important role in current educational practice and politics. However, many scholars have questioned the validity and reliability of the tests and the extent to which they actually constitute trustworthy representations of students' knowledge. In the light of such critical voices the present article adopts a sociocultural perspective of human knowledge and action in order to explore the encounters between students and the science test assignments with which their knowledge is tested. Of particular interest in this study are the described "real-life situations" presented as the relevant background in which scientific literacy is assessed in PISA. According to the sociocultural theoretical onset the methodology used to approach the students' meaning making of the image of science as portrayed in the test were collaborative situations in which students work in small groups with units of PISA assignments, enabling a study of student-assignment encounters in action. The data we worked with consists of video-recordings from 71 Swedish 15-year-old students working with three released units from the PISA science test. According to our analysis, the "real-life situations" described in the test emerge as problematic in the students' meaning-making. This is demonstrated for instance by the students' positioning themselves as being different from and opposed to the fictional pictured students who appear in the backstories of the test. This article provides examples of how the scientific and academic language used by the fictional students in the assignments mediates distance and resistance among the students. The fictional students' use of strict scientific language and methods in day-to-day life situations leads them to be perceived as "little scientists" and as elite stereotypes of the scientific culture. We conclude that, by using assignments of this type, measurements of

Gas-cooled reactor coolant circulator and blower technology. Proceedings of a specialists meeting held in San Diego 30 November - 2 December 1987

Energy Technology Data Exchange (ETDEWEB)

1988-08-01

In the previous 17 meetings held within the framework of the International Working Group on Gas-Cooled Reactors, a wide variety of topics and components have been addressed, but the San Diego meeting represented the first time that a group of specialists had been convened to discuss circulator and blower related technology. A total of 20 specialists from 6 countries attended the meeting in which 15 technical papers were presented in 5 sessions: circulator operating experience I and II (6 papers); circulator design considerations I and II (6 papers); bearing technology (3 papers). A separate abstract was prepared for each of these papers. Refs, figs and tabs.

Edificio Roca, calle San Vicente, 32 (1934-36) Valencia: proyecto de interiorismo

OpenAIRE

CARBONELL SANTACRUZ, MARÍA DE LA LUZ

2012-01-01

Este Proyecto Final de Grado trata sobre la reutilización del Edificio Roca (1934-36), que está situado en la calle San Vicente, 32, de Valencia y es obra del arquitecto Vicente Valls Gadea (1985-1922). El proyecto se articula en tres fases. La fase inicial comienza con el estudio histórico de la ciudad de Valencia. A continuación trata de la arquitectura europea a partir de la Revolución Industrial y el movimiento arquitectónico racionalista en Valencia. Por último, se estudia la calle...

Science education, the science curriculum and PISA 2006

DEFF Research Database (Denmark)

Lavonen, Jari; Lie, Svein; MacDonald, Allyson

2009-01-01

Much is similar in the Nordic countries. But much is also different. The purpose of this anthology is to study the Nordic Countries from some different perspective by using data from PISA 2006. How different are the curricula and syllabuses? Is the impact of socio-economic status different...

Golden Relics & Historical Standards: How the OECD is Expanding Global Education Governance through PISA for Development

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Addey, Camilla

2017-01-01

Setting this paper against the backdrop of scholarly research on recent changes in the OECD's approach and workings in education, I analyse how the OECD has reinforced its infrastructural and epistemological global governance through the Programme for International Student Assessment (PISA) for Development (PISA-D). Drawing on qualitative data,…

PISA and TIMSS Science Score, Which Clock Is More Accurate to Indicate National Science and Technology Competitiveness?

Science.gov (United States)

Shi, Wei-Zhao; He, Xiqin; Wang, Yan; Fan, Zeng-Guang; Guo, Liangdong

2016-01-01

In 2015, PISA and TIMSS are coming up to us together. In this study, the data from PISA and TIMSS are used to investigate that which one is a better indicator of national science and technology (S&T) competitiveness? Number of S & T journal articles (per million people) is used as a measure to represent the national S&T…

What Do We Really Learn from PISA? The Sociology of Its Reception in Three European Countries (2001-2008)

Science.gov (United States)

Pons, Xavier

2011-01-01

This article synthesises some findings of an international research project called "Know&Pol" to question the effects of the OECD's Programme for International Student Assessment (PISA) on the public debate in three European countries (France, Portugal and Scotland). Using a political science approach, it shows that Pisa did not…

A Comparative Analysis of PISA Scientific Literacy Framework in Finnish and Thai Science Curricula

Science.gov (United States)

Sothayapetch, Pavinee; Lavonen, Jari; Juuti, Kalle

2013-01-01

A curriculum is a master plan that regulates teaching and learning. This paper compares Finnish and Thai primary school level science curricula to the PISA 2006 Scientific Literacy Framework. Curriculum comparison was made following the procedure of deductive content analysis. In the analysis, there were four main categories adopted from PISA…

Yacimientos de Celestina en la Plataforma Valles-San Luis Potosí

OpenAIRE

Rocha Rocha, Macario

2008-01-01

En la zona de estudio, la Plataforma Valles-San Luis Potosí (PVSLP), existen depósitos de celestina; las características geotectónicas de la zona, hacen pensar que estos depósitos se asocian con evaporitas del Jurásico Superior-Cretácico Inferior. La mineralización de celestina arma en la Formación El Abra y en menor grado la Formación Indidura, en forma de vetas, mantos, zonas de brecha y cuerpos irregulares. La mineralogía consiste básicamente de celestina y algunos minerales...

A study of copper precipitation in the thermally aged FeCu alloy using SANS

Energy Technology Data Exchange (ETDEWEB)

Park, D. G.; Kim, J. H.; Kwon, S. C.; Kim, W. W. [Korea Atomic Energy Research Institute, Taejon (Korea, Republic of); Lee, M. N.; Koo, Y. M. [Pohang University of Science and Technology, Pohang (Korea, Republic of)

2005-07-01

The continued operation or lifetime extension of a number of nuclear power plant around the world requires an understanding of the damage imparted to the reactor pressure vessel (RPV) steel by radiation. Irradiation embrittlement of nuclear reactor pressure vessel steels results from a high number of nanometer sized Cu rich precipitates (CRPs) and sub-nanometer defect-solute clusters. The copper precipitation leads to a distortion of the crystal lattice surrounding the copper precipitates and yields an internal micro-stress. In order to study the effect of copper precipitation on the steel embrittlement under neutron irradiation, the characteristics of nano size defects were investigated using small angle neutron scattering (SANS) in the thermal aged FeCu model alloys. The results on the precipitation composition, number density, size distribution and matrix composition obtained using a high resolution TEM and SANS are compared and contrasted.

High intensity multi beam design of SANS instrument for Dhruva reactor

Energy Technology Data Exchange (ETDEWEB)

Abbas, Sohrab, E-mail: abbas@barc.gov.in; Aswal, V. K. [Solid State Physics Division, Bhabha Atomic Research Centre, Mumbai 400085 (India); Désert, S. [Laboratoire Leon Brillouin, CEA, Saclay, 91191 (France)

2016-05-23

A new and versatile design of Small Angle Neutron Scattering (SANS) instrument based on utilization of multi-beam is presented. The multi-pinholes and multi-slits as SANS collimator for medium flux Dhruva rearctor have been proposed and their designs have been validated using McStas simulations. Various instrument configurations to achieve different minimum wave vector transfers in scattering experiments are envisioned. These options enable smooth access to minimum wave vector transfers as low as ~ 6×10{sup −4} Å{sup −1} with a significant improvement in neutron intensity, allowing faster measurements. Such angularly well defined and intense neutron beam will allow faster SANS studies of agglomerates larger than few tens of nm.

Análisis de la competencia científica de alumnado de secundaria: respuestas y justificaciones a ítems de PISA

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Beatriz Crujeiras Pérez

2015-01-01

Full Text Available En este artículo se analiza el desarrollo de la competencia científica de alumnado de secundaria examinando: asus respuestas y justificaciones a ítems de opción de respuesta múltiple utilizados en la evaluación PISA; y b elefecto que tiene la realización de actividades de laboratorio de indagación que abordan los desempeños evaluadosen PISA sobre la adquisición de la competencia.Los participantes son 21 estudiantes de un centro público cursando la materia de Física y Química en 3º y 4º deESO. Se analizan las respuestas escritas a los ítems PISA al principio y al final del estudio a través de una rúbricarelacionada con los niveles de desempeño establecidos en PISA (OCDE, 2008 para las competencias científicasde identificar cuestiones científicas y usar pruebas científicas. Se comparan los resultados obtenidos al inicio y alfinal del estudio en porcentajes de las opciones de respuesta seleccionadas y de las justificaciones a cada opciónde respuesta. Se identifican diferencias en los resultados obtenidos en la selección de opción de respuesta correctay en la justificación de la misma, así como en los resultados y justificaciones al principio y al final del estudio.

ESTADO FITOSANITARIO DE UNA POBLACION DE ZINGIBERALES. VEREDA SAN PEDRITO- MUNICIPIO DE TIMBIO - CAUCA

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SANDRA CARLINA RIVAS Z

2013-12-01

Full Text Available En la vereda San Pedrito, Municipio de Timbío, departamento del Cauca, se observó el estado fitosanitario con respecto a enfermedades fúngicas presentes en 12 especies y 3 variedades de zingiberales. Después de observar en campo las sintomatologías, se tomaron muestras del material vegetal y se cultivaron en el laboratorio, donde se logró identificar enfermedades ocasionadas principalmente por los hongos Fusarium oxysporum, Colletotrichum sp., Alternaria sp., Dipliodia sp., Pestalotia sp., Mycosphaerella musicola, Cordana musicola, Sclerotinia sp., Helminthosporium sp., Nigrospora sp., Cercospora sp., Monilia sp., Rhizoctonia sp.; también se desarrollaron diagramas estándares de severidad para evaluar el ataque causando por los patógenos, determinando el área de las hojas e inflorescencias en cm2 y severidades del 1%, 5%, 10%, 25% y 50%, que corresponden a los grados 1, 3, 5, 7 y 9; encontrando que los hongos fitopatógenos que presentaron mayor severidad (grado 9 fueron Alternaria sp. y Nigrospora sp., en la variedad H. griggsiana y la severidad más baja (grado 5 fue ocasionada por Fusarium oxysporum, afectando tanto las inflorescencias como el follaje en las variedades Strelitzia reginae y Etlingera.

Keefektivan PMRI Berbantuan Alat Peraga Terhadap Kemampuan Pemecahan Masalah Serupa PISA Pada Kelas VII

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Riyanto Riyanto

2014-06-01

student learning achievement are then analyzed to the thoroughness test and the average difference test: one side test (right side. The results of this research are (1 The students achievement of experimental class not yet achieved the minimum completeness criteria, (2 the average the problem solving skills PISA of experimental class learning better than controlling class, and (3 score average of teacher activity of experimental class and controlling class have a good category.  Keywords:          PISA; PMRI; Quality of teaching.

Biohydrogen production from diary processing wastewater by anaerobic biofilm reactors

Energy Technology Data Exchange (ETDEWEB)

Rios-Gonzalez, L.J.; Moreno-Davila, I.M.; Rodriguez-Martinez, J.; Garza-Garcia, Y. [Universidad Autonoma de Coahuila, Saltillo, Coahuila (Mexico)]. E-mail: leopoldo.rios@mail.uadec.mx

2009-09-15

to be employed for hydrogen production. [Spanish] Este articulo describe la produccion biologica de hidrogeno a partir de agua residual diaria via fermentacion anaerobica utilizando choque termico pretratado (100 grados centigrados, 30 min.) y procedimientos de tratamiento acido para enriquecer selectivamente el hidrogeno produciendo consorcios mezclados antes de la inoculacion de reactores por lote. El biorreactor empleado para el consorcio de inmovilizacion se opero a temperatura mesofilica (ambiente) (20{+-}3 grados centigrados), bajo condiciones acidofilicas (pH 4.0-4.5), HRT (2h), y un soporte natural para generar hidrogeno produciendo biopelicula de consorcios mezclados: Opuntia imbricata. El reactor se opero inicialmente con sorbitol (5g/L) durante 60 dias de operacion. Las pruebas de lote se llevaron a cabo empleando 20{+-}0.02g de soporte natural con biopelicula. Los experimentos de lote se realizaron para investigar el efecto de la DQO ((2.9-21.1 g-DQO/L), a pH inicial de 7.0, 32{+-}1 grados centigrados. La produccion maxima de hidrogeno se obtuvo a 21.1 g-COD/L. Se efectuaron experimentos del efecto del pH empleando una concentracion de sustrato optima (21.2 g-COD/L), a pH de 4 a 7 y 11.32 (pH de agua residual diaria) y 32{+-}1 grados centigrados. Los resultados de los experimentos indican que el cultivo inicial optimo fue de pH 4.0, pero podemos considerar tambien una produccion estable de hidrogeno a pH 11.32 (pH de agua residual diaria), por lo que se pudo evitar ajustar el pH, y usar agua residual diaria como queda en el proceso de produccion de queso. El pH operacional de 4.0 esta 1.5 unidades por debajo del reportado antes correspondiente al hidrogeno que producen los organismos. La influencia del efecto de la temperatura se realizo usando la concentracion de sustrato optima (21.2 g-COD/L), dos niveles de pH: 4.0 y 11.32, y cuatro diferentes temperaturas: 16{+-}3 grados centigrados (temperatura ambiente), 32{+-}1 grados centigrados, 45{+-}1 grados

Cultural Capital--A Shift in Perspective: An Analysis of PISA 2009 Data for Croatia

Science.gov (United States)

Puzic, Saša; Gregurovic, Margareta; Košutic, Iva

2016-01-01

Using PISA 2009 data for Croatia, this paper addresses the relationship between socio-economic background, cultural capital and educational attainment. Following Bourdieu, we emphasized the importance of interpreting cultural capital effects as effects of family habitus. The results indicated that the material and the relational dimension of…

Un estudio multinivel basado en PISA 2003: factores de eficacia escolar en el área de matemáticas. A Multilevel Study Based on PISA 2003: School Effectiveness Factors in the area of Mathematics

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Covadonga Ruiz de Miguel

2006-11-01

Full Text Available En el artículo se presenta un modelo multinivel realizado a partir de los datos obtenidos en el estudio PISA 2003. El modelo incluye tres niveles (estudiante, escuela, país y variables relacionadas con la eficacia escolar, utilizando el rendimiento en matemáticas como variable dependiente, a partir de los valores plausibles que el estudio facilita para cada alumno. Los resultados obtenidos permiten concluir que variables como estructura familiar, sexo, nivel socioeconómico (tanto de la familia como de la escuela, recursos educativos del hogar, calidad de los recursos de la escuela, expectativas educativas del alumno, tamaño de la escuela, formación del profesorado y recursos económicos que el país destina a la educación, tienen una notable influencia sobre el rendimiento de los alumnos en el área de matemáticas. This article presents a school effectiveness multilevel model based on PISA 2003 data. Our focus is math achievement. We employ a three level model (student, school and country with variables related to school effectiveness as predictors of student achievement. We use a methodology that takes into account the multiple plausible values generated by PISA for each student. Results show that family structure, gender, family and school socioeconomic status, home educational resources, quality of school resources, student educational expenditures, school size, teacher education and country economic resources devoted to education all have sizable influence on mathematics achievement.

Bildungskrise – PISA and the German Educational Crisis

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Wolfgang Odendahl

2017-03-01

Full Text Available After consistently bad results in every PISA test (Programme for International Student Assessment and an accompanying prediction of lack of skills in its future workforce, Germany might be on track for losing out in international competition. Because of PISA’s overwhelming marketing presence, its results are a major political influence. The OECD PISA committee’s recommendations based on the results are challenging the fundamental structure of Germany’s three-tiered educational system, aiming to eliminate its segregational effects on social classes. In order to analyze PISA’s effects on German society from the angle of educational policy, this study compares the goals stated in its documentation with its effects on the public perception of Germany’s future workforce. Three fields of research are considered: Education as a concept for furthering society as a whole, assessment logic, and the educational system as a functional module of the nation state. The study will show that PISA’s test results are valid in indicating an urgent necessity to improve the teaching of basic skills, such as mathematics, reading, and writing. The interpretations of and recommendations based on these results, however, are reflecting a solely utilitarian view of educational systems as supplying human resources for industry.

The Big Improvement in PISA 2009 Reading Achievements in Serbia: Improvement of the Quality of Education or Something Else?

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Dragica Pavlović Babić

2011-01-01

Full Text Available The PISA 2009 results in Serbia show a big improvement in reading literacy compared to 2006 – the average score is 41 points higher, which is equal to the effect of a whole year of schooling in OECD countries and represents the second highest improvement ever recorded in a PISA study. In the present paper, we discuss potential reasons for such a big improvement based on analysis of the PISA 2009 reading achievements in different countries, with a special focus on countries from the same region (Croatia, Slovenia, Montenegro, Bulgaria, Romania and Albania. The analysis shows that the largest part of the improvement was realised at lower achieving levels, suggesting that the dominant method of teaching in schools is a traditional method oriented towards the acquisition and reproduction of academic knowledge. Findings of data analysis support the conclusion that the improvement is mainly the result of certain contextual factors, such as higher student motivation and a high level of official support for the PISA study in Serbia, rather than representing a real improvement in the quality of education.

Gender differences in reaching top roles in banking: a cross-sectional study performed by bankers work in province of Pisa

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Vittoria Colamesta

2015-09-01

Full Text Available The financial industry is a pivot of the economy and plays an important social role.Goal of this study was to analyze factors associated with the framing level in banking in the province of Pisa.We collected data about age, gender, framing level, workplace and type of bank for bankers in Pisa through trade unionists.We collected data on 2018 workers and we found significant associations between framing level and aged over 40 years (OR = 4.5; 95% CI: 2.9-6.9, workplace in Pisa (OR = 0.30; 95% CI: 0.20-0.44 and male gender (OR = 2.89; 95% CI: 1.98-4.21.The first two factors are explainable with organizational characteristics. In fact for becoming manager you already have to work a number of year and in cities rather than in the surrounding municipalities, consistent with the size of bank.However, the third factor, already known in the literature in other work areas, requires further studies for explaining causes and helping to implement actions to reduce the gender gap.

The students’ ability in mathematical literacy for the quantity, and the change and relationship problems on the PISA adaptation test

Science.gov (United States)

Julie, Hongki; Sanjaya, Febi; Yudhi Anggoro, Ant.

2017-09-01

One of purposes of this study was to describe the solution profile of the junior high school students for the PISA adaptation test. The procedures conducted by researchers to achieve this objective were (1) adapting the PISA test, (2) validating the adapting PISA test, (3) asking junior high school students to do the adapting PISA test, and (4) making the students’ solution profile. The PISA problems for mathematics could be classified into four areas, namely quantity, space and shape, change and relationship, and uncertainty. The research results that would be presented in this paper were the result test for quantity, and change and relationship problems. In the adapting PISA test, there were fifteen questions that consist of two questions for the quantity group, six questions for space and shape group, three questions for the change and relationship group, and four questions for uncertainty. Subjects in this study were 18 students from 11 junior high schools in Yogyakarta, Central Java, and Banten. The type of research that used by the researchers was a qualitative research. For the first quantity problem, there were 38.89 % students who achieved level 3. For the second quantity problem, there were 88.89 % students who achieved level 2. For part a of the first change and relationship problem, there were 55.56 % students who achieved level 5. For part b of the first change and relationship problem, there were 77.78 % students who achieved level 2. For the second change and relationship problem, there were 38.89 % students who achieved level 2.

La enfermería de la Orden de San Juan de Dios en el Chile colonial

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Julia Cristobalina Huaiquián-Silva

2013-01-01

Full Text Available Objetivo: describir las prácticas de enfermería en Chile durante la época colonial, prestando especial atención a la influencia de España en dicho proceso. Método: investigación cualitativa de abordaje socio-histórico; las fuentes primarias corresponden a textos históricos de Chile recuperados en la Biblioteca Virtual Memoria Chilena, y a 34 documentos recopilados en el Archivo Museo San Juan de Dios, Casa de los Pisa, en Granada, España, titulados “Listado de los hermanos de San Juan de Dios que vivían en Chile (207 años y un índice de documentos inéditos copiados de los archivos histórico nacional y del antiguo hospital, por Faustino Calvo”. La recolección de la información se efectuó con ficha documental confeccionada por la investigadora, complementada con fotografías. El análisis de los datos se realizó a través de análisis de contenido. Resultados: la Orden de San Juan de Dios llegó a Chile en el año 1617 a los hospitales de Santiago y Concepción y se expandió a las ciudades de La Serena, Valparaíso, San Juan de la Frontera, Talca, Chillan, Concepción y Valdivia. Por más de doscientos años la Orden permaneció en Chile brindando asistencia hospitalaria y de enfermería a través de los cuidados religiosos. Conclusión: con la llegada de la Orden al país mejoró indiscutiblemente la organización de los cuidados de salud al interior de los hospitales, que a partir de esa fecha se administraron de forma organizada, con altos estándares de higiene y limpieza, vigilando sigilosamente la alimentación de sus pacientes y con una gran preocupación por brindar asistencia espiritual a quienes necesitasen de sus servicios.

Geología de la parte sur de la Sierra de San Luis y granitoides asociados, Argentina

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Llambías, E. J.

1992-12-01

Full Text Available The lower Palaeozoic basement of the southern part of Sierra de San Luis, Argentina, is made up of metamorphic rocks, granitoids and ultramafic rocks. The metamorphic grade ranges from the lower limit of greenschist facies through the upper limit of amphibolite facies, in apparent transition. The lower grade metamorphic rocks include slates, metavolcanics, metaconglomerates, quartzites and phyllites. Rocks with intermediate metamorphism are biotite-quartz-oligoclase schists with abundant pegmatoid veins. The higher grade metamorphism is represented by gneisses, amphibolites and migmatites, to which mafic and ultramafic bodies are associated. Three deformation phases have been recognized, being the last one (D3, of ordovician age, responsible of the most marked structures.The granitoids were grouped into pre-, syn- and post-kynematic bodies respect to D3. The pre-kynematic granitoids are located within the belt of lower grade metamorphic rocks and are composed of tonalites, granodiorites and monzogranites, strongly deformed. Their age is unknown. The syn-kynematic bodies are mainly garnet-moscovite-bearing leucogranodiorites. They show low thermal and rheological contrasts respect to the country rocks, and the age is 454 ± 21 m.a. The post-kynematic granitoids are mainly monzogranites with K-feldspar megacrysts and abundant sphene. They are subcircular and discordant, and are associated with an extensional regime. Their age is comprised between 423 and 320 m.a., and corresponds to the end of the Famatinian cycle.El basamento cristalino de la parte sur de la Sierra de San Luis, de edad Paleozoico Inferior, está constituido por rocas metamórficas, granitoides y rocas ultramáficas. El grado de metamorfismo varía desde la parte baja de esquistos verdes hasta la parte alta de la facies anfibolita, siendo sus relaciones de aparente transicionalidad. Las rocas con menor grado metamórfico consisten en pizarras, metavolcanitas, metaconglomerados

PENGEMBANGAN SOAL MATEMATIKA MODEL PISA KONTEN BILANGAN UNTUK MENGETAHUI KEMAMPUAN LITERASI MATEMATIKA SISWA

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Yudi Yunika Putra

2016-01-01

Full Text Available The aims of the research are (1 to product content quantity PISA-like problems which validity and practicality, and (2 to know the potential effect of the content quantity mathematical PISA-like problems for mathematic literacy ability. The subjects of the research are student SMP AR-RAIHAN Bandar Lampung. The research method used is development research which consist of two stages, they are preliminary and prototyping. In the preliminary stage have been done analysis for research subject, curricula, analysis for content and manufacture of instruments. Meanwhile, in prototyping stage used formative evaluation which includes : self evaluation, one-to-one,expert review, small group, and field test. The data collection techniques used in the research were walk through (expert review stage for knowing the validity of the content, construct, and language. Analysis one-to-one stage, small group stage, and quetionaire (small group stage  for knowing the practicality; test results, quetionaire, and interview (field test stage for knowing potential effect. Based on the data analysis of research, it can be concluded that:  1 this research produced 4 items of content quantity PISA like mathematical problems which are valid and practice.The problems declared valid based on comments about content, construct, and language by experts and  analysis in validity criteria; otherwise practical based on the student argumentation such as the problems can be understood by student and can be implementation properly; and 2 Of  content  quantity PISA like mathematical problems has potential effect on student. Based test result and questionnaire all based mathematical ability (KDM  be used student for answer questions.

PISA and High-Performing Education Systems: Explaining Singapore's Education Success

Science.gov (United States)

Deng, Zongyi; Gopinathan, S.

2016-01-01

Singapore's remarkable performance in Programme for International Student Assessment (PISA) has placed it among the world's high-performing education systems (HPES). In the literature on HPES, its "secret formula" for education success is explained in terms of teacher quality, school leadership, system characteristics and educational…

Using TIMSS and PISA Results to Inform Educational Policy: A Study of Russia and Its Neighbours

Science.gov (United States)

Carnoy, Martin; Khavenson, Tatiana; Ivanova, Alina

2015-01-01

In this paper, we develop a multi-level comparative approach to analyse Trends in International Mathematics and Science Survey (TIMSS) and Programme of International Student Achievement (PISA) mathematics results for a country, Russia, where the two tests provide contradictory information about students' relative performance. Russian students do…

Ensino de Física por meio de questões do PISA associadas a Temas Estruturadores e Conceitos Unificadores

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Wagner Duarte José

2016-09-01

Full Text Available http://dx.doi.org/10.5007/2175-7941.2016v33n2p333   Programas de avaliação da educação em escala mundial como o PISA vêm contribuindo para as nações participantes refletirem e efetuarem políticas públicas educativas na escola básica, projetando reflexos na formação inicial e continuada de professores. Por meio de um estudo de caráter exploratório, neste trabalho, verificamos como se articulam os Temas Estruturadores do Ensino de Física e os conceitos unificadores nas unidades temáticas de física das provas de ciências do PISA. Objetivamos destacar a potencialidade dessa articulação para o ensino-aprendizagem segundo a via dos universais da física com aporte das tecnologias digitais de informação e comunicação (TDIC. Concluímos ressaltando a importância do PISA no contexto atual de avaliação da educação, bem como, a pertinência da articulação em pauta e, consequentemente, as mudanças consensuais desejáveis na prática educativa dos físicos-educadores que necessariamente incluem apreensão e uso crítico de TDIC.

Relative Private School Effectiveness in the Netherlands: A Reexamination of PISA 2006 and 2009 data

NARCIS (Netherlands)

Cornelisz, Ilja

2013-01-01

An ongoing question is whether private (religious) schools provide better education than public schools. This study re- addresses this issue, using PISA 2006 and 2009 data for the Netherlands and three different methodologies. Overall, there is no consistent pattern. Results based on ordinary least

Estimulación de la actividad péptica del jugo gástrico, inducida por látex de Croton palanostigma (sangre de grado

Directory of Open Access Journals (Sweden)

Miguel Sanvodal

2008-09-01

Full Text Available Objetivo: Determinar si la administración del látex de Croton palanostigma (sangre de grado, vía digestiva, modifica la actividad péptica de la secreción gástrica. Diseño: Estudio experimental. Institución: Centro de Investigación de Bioquímica y Nutrición Alberto Guzmán Barrón, Facultad de Medicina, Universidad Nacional Mayor de San Marcos. Material biológico: Ratas albinas machos adultos y sangre de grado. Métodos: Se usó 50 ratas albinas machos adultos, entre 200 y 250 g de peso, que fueron distribuidas aleatoriamente en 5 grupos, a los que se administró por vía oro-gástrica, y en dosis única, como sigue: grupo I: 0,8 mL/kg de sangre de grado; grupo II: 0,8 mL/kg de sangre de grado neutralizada; grupo III: ranitidina 50 mg/kg; grupo IV: control, con solución salina 0,9 g% (sin histamina; grupo V: control con solución salina 0,9 g%. Se realizó ligadura pilórica, por laparotomía, con anestesia de éter etílico. Se utilizó histamina, aplicada por vía subcutánea, para estimular la secreción, excepto al grupo IV. Cuatro horas después, se extrajo el jugo gástrico, se midió el volumen, el pH por potenciometría y la actividad de la pepsina, por el método de Anson modificado, expresado como µg de tirosina/mL. Principales medidas de resultados: Modificación de la actividad péptica de la secreción gástrica. Resultados: El volumen del jugo gástrico fue significativamente menor en los grupos II y III; que en los otros, entre los que no hubo diferencia estadística. El pH del grupo III (con ranitidina fue significativamente mayor que los otros, demostrando el efecto del fármaco. La actividad péptica fue: con sangre de grado 5,34+1,04; sangre de grado neutralizada 2,69+1,27; grupo ranitidina 2,57+0,88; el control sin histamina 3,29+0,94 y control con histamina 3,58+1,18. La actividad péptica fue significativamente mayor (+49,2% en el grupo con sangre de grado (p<0,01 que en los otros grupos. Conclusiones

Analysis mathematical literacy skills in terms of the students’ metacognition on PISA-CPS model

Science.gov (United States)

Ovan; Waluya, S. B.; Nugroho, S. E.

2018-03-01

This research was aimed to know the effectiveness of PISA-CPS model and desceibe the mathematical literacy skills (KLM) in terms of the students’ metacognition. This study used Mixed Methods approaches with the concurrent embedded desaign. The technique of data analysis on quantitative research done analysis of lesson plan, prerequisite test, test hypotesis 1 and hypotesis test. While qualitative research done data reduction, data presentation, and drawing conclution and data verification. The subject of this study was the students of Grade Eight (VIII) of SMP Islam Sultan Agung 4 Semarang, Central Java. The writer analyzed the data with quantitative and qualitative approaches based on the metacognition of the students in low, medium and high groups. Subsequently, taken the mathematical literacy skills (KLM) from students’ metacognition in low, medium, and high . The results of the study showed that the PISA-CPS model was complete and the students’ mathematical literacy skills in terms of the students’ metacognition taught by the PISA-CPS model was higher than the expository learning. metacognitions’ students classified low hadmathematical literacy skills (KLM) less good, metacognitions’ students classified medium had mathematical literacy skills (KLM) good enough, metacognitions’ students classified high had mathematical literacy skills (KLM) very good. Based onresult analysis got conclusion that the PISA-CPS model was effective toward the students’ mathematical literacy skills (KLM). To increase the students’ mathematical literacy skills (KLM), the teachers need to provide reinforcements in the form of the exercises so that the student’s mathematical literacy was achieved at level 5 and level 6.

La presencia de PISA en la literatura científica y su tratamiento en la prensa diaria internacional

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Antonio Luzón

2013-01-01

Full Text Available Este artículo examina y analiza la producción científica tanto en la literatura científica, como el uso público que se ha realizado del Programa para la Evaluación Internacional de los Estudiantes (PISA desarrollado por la OCDE. En concreto, comprueba qué influencia ha tenido PISA en la literatura científica desde su creación y ello se verifica a través de las publicaciones halladas a través de la Web of Science (WoS de Thomson-Scientific, que incluye diversas bases de datos: Science Citation Index (SCI, Social Sciences Citation Index (SSCI y Arts & Humanities Citation Index, (AHCI de Thomson Reuters así como en Scopus de Elsevier. También incide sobre la presencia de PISA en los cada vez más utilizados motores de búsqueda de cuarta generación como Google Scholar, de carácter abierto y gratuito. Al mismo tiempo, pretende comprobar la resonancia que tiene en la prensa diaria y su impacto mediático mundial que ha originado la publicación del último informe PISA (2009 en los principales diarios españoles e internacionales.

A New Global Policy Regime Founded on Invalid Statistics? Hanushek, Woessmann, PISA, and Economic Growth

Science.gov (United States)

Komatsu, Hikaru; Rappleye, Jeremy

2017-01-01

Several recent, highly influential comparative studies have made strong statistical claims that improvements on global learning assessments such as PISA will lead to higher GDP growth rates. These claims have provided the primary source of legitimation for policy reforms championed by leading international organisations, most notably the World…

Why Do East Asian Children Perform so well in PISA? An Investigation of Western-Born Children of East Asian Descent

Science.gov (United States)

Jerrim, John

2015-01-01

A small group of high-performing East Asian economies dominate the top of the Programme for International Student Assessment (PISA) rankings. This has caught the attention of Western policymakers, who want to know why East Asian children obtain such high PISA scores, and what can be done to replicate their success. In this paper I investigate…

El impacto de PISA en España: la influencia de los medios de comunicación

OpenAIRE

Fernández-Aliseda Garrido, Mar

2016-01-01

El informe PISA ha conseguido agitar profundamente sistemas educativos a nivel internacional. Convertido en la evaluación educativa más popular, incluso fuera de círculos especializados, aporta cada tres años una completísima y compleja base de datos

Práctica 3: Precipitación, Filtración y Centrifugación (Video 1 de 4) - Grado en Biotecnología

OpenAIRE

Palacios Santander, José María; Cubillana Aguilera, Laura; Fernández Barbero, Gerardo; Espada Bellido, Estrella; García Moreno, María de Valme

2015-01-01

Este vídeo forma parte de los ya incluidos anteriormente, pero al tratarse de una práctica de un Grado diferente a los anteriores (Grado en Biotecnología), lo incluimos aparte. En los anteriores, la práctica corresponde a la asignatura Operaciones Básicas de Laboratorio del Grado en Enología y del Grado en Química y éste pertenece a una práctica de la asignatura Laboratorio Integrado de Química del Grado en Biotecnología. Los nombres de las asignaturas se especifican en cada vídeo correspondi...

School Climate in American Secondary Schools: A Psychometric Examination of PISA 2009 School Climate Scale

Science.gov (United States)

Sun, Letao; Royal, Kenneth

2017-01-01

The purpose of this study was to examine the quality of the Program for International Student Assessment (PISA) 2009 school climate survey instrument and evaluate perceptions of secondary school principals' located in the United States about school climate using an Item Response Theory (IRT) methodological approach. In particular, this study…

Rethinking the Pattern of External Policy Referencing: Media Discourses over the "Asian Tigers" PISA Success in Australia, Germany and South Korea

Science.gov (United States)

Waldow, Florian; Takayama, Keita; Sung, Youl-Kwan

2014-01-01

The article compares how the success of the "Asian Tiger" countries in PISA, especially PISA 2009, was depicted in the media discussion in Australia, Germany and South Korea. It argues that even in the times of today's "globalised education policy field", local factors are important in determining whether or not a country…

The education system of Finland and its success in the PISA test

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Emilio Jesús Lizarte Simón

2012-12-01

Full Text Available Once again, the Finnish educational system has scored well in the PISA-tests. Among its various organizational structures and policies, the consensus of the educational policy - which is reflected by uniform structures and directions for developing the curriculum - can be identified as a reason for the success. The municipalities are responsible for the organization and realization of the primary education as well as establishing a more detailed curriculum in accordance with the goals of the National Board of Education. The schools and the teachers are allowed a great deal of independence when developing the pedagogical content and choosing a method. This orientation reflects an adjustment in the goals of the curriculum which now emphasizes practical usefulness of the information acquired by the students rather than strict adherence to a rigid curriculum. Also the change in the inspection system and the development of the education after the primary education are important aspects considering the Finnish success in the PISA tests.

A comparison of Percutaneous femoral access in Endovascular Repair versus Open femoral access (PiERO): study protocol for a randomized controlled trial.

Science.gov (United States)

Vierhout, Bastiaan P; Saleem, Ben R; Ott, Alewijn; van Dijl, Jan Maarten; de Kempenaer, Ties D van Andringa; Pierie, Maurice E N; Bottema, Jan T; Zeebregts, Clark J

2015-09-14

Access for endovascular repair of abdominal aortic aneurysms (EVAR) is obtained through surgical cutdown or percutaneously. The only devices suitable for percutaneous closure of the 20 French arteriotomies of the common femoral artery (CFA) are the Prostar(™) and Proglide(™) devices (Abbott Vascular). Positive effects of these devices seem to consist of a lower infection rate, and shorter operation time and hospital stay. This conclusion was published in previous reports comparing techniques in patients in two different groups (cohort or randomized). Access techniques were never compared in one and the same patient; this research simplifies comparison because patient characteristics will be similar in both groups. Percutaneous access of the CFA is compared to surgical cutdown in a single patient; in EVAR surgery, access is necessary in both groins in each patient. Randomization is performed on the introduction site of the larger main device of the endoprosthesis. The contralateral device of the endoprosthesis is smaller. When we use this type of randomization, both groups will contain a similar number of main and contralateral devices. Preoperative nose cultures and perineal cultures are obtained, to compare colonization with postoperative wound cultures (in case of a surgical site infection). Furthermore, patient comfort will be considered, using VAS-scores (Visual analog scale). Punch biopsies of the groin will be harvested to retrospectively compare skin of patients who suffered a surgical site infection (SSI) to patients who did not have an SSI. The PiERO trial is a multicenter randomized controlled clinical trial designed to show the consequences of using percutaneous access in EVAR surgery and focuses on the occurrence of surgical site infections. NTR4257 10 November 2013, NL44578.042.13.

Using PISA 2003, Examining the Factors Affecting Students' Mathematics Achievement

Science.gov (United States)

Demir, Ibrahim; Kilic, Serpil

2010-01-01

The purpose of this study is to examine the effects of learning strategies on mathematics achievement. The sample was compiled from students who participated in Programme for International Student Assessment (PISA) in Turkey. The data consisted of 4493 15 years old Turkish students in 158 schools, and analyzed by two levels Bernoulli model as a…

The OECD PISA Study as a Soft Power in Education? Lessons from Switzerland and the US

Science.gov (United States)

Bieber, Tonia; Martens, Kerstin

2011-01-01

Although originally created for economic purposes, the Organisation for Economic Co-Operation and Development (OECD) has increasingly gained weight in education policy in recent years and is now regarded as an international authority in the field, particularly through its "Programme for International Student Assessment" (PISA), which was…

SANS-1 Experimental reports of 2000

International Nuclear Information System (INIS)

Willumeit, R.; Haramus, V.

2001-01-01

The instrument SANS-1 at the Geesthacht neutron facility GeNF was used for scattering experiments in 2000 at 196 of 200 days of reactor and cold source operation. The utilisation was shared between the in-house R and D program and user groups from different universities and research centers. These measurements were performed and analysed either by guest scientists or GKSS staff. The focus of the work in 2000 at the experiment SANS-1 was the structural investigation of hydrogen containing substances such as biological macromolecules (ribosomes, protein-RNA-complexes, protein solutions, glycolipids and membranes), molecules which are important in the fields of environmental research (refractoric organic substances) and technical chemistry (surfactants, micelles). (orig.) [de

Grado de adherencia a tratamientos en personas con riesgo cardiovascular

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Stella Ignacia Ortega Oviedo

2014-01-01

Full Text Available Objetivo: Determinar el grado de adherencia al tratamiento farmacológico y no farmacológico en personas con factores de riesgo cardiovascular inscritos en el programa de promoción de la salud y prevención de la enfermedad cardiovascular en una Institución Prestadora de Salud de Montería, Colombia. Metodología: Estudio descriptivo, transversal, cuantitativo, con 204 pacientes de un programa de promoción de la salud y prevención de la enfermedad cardiovascular. La información se obtuvo aplicando la cuarta versión del Instrumento para evaluar los factores que influyen en la adherencia a tratamientos farmacológicos y no farmacológicos en pacientes con factores de riesgo de enfermedad cardiovascular, diseñado por Bonilla y Gutiérrez (3. Los resultados se analizaron mediante técnicas de estadística descriptiva y medidas de tendencia central y de posición. Resultados: El grado de adherencia terapéutica en los participantes mostró un 67% en situación de ventaja para adherencia; un 29% en riesgo a no adherirse y un 4% en situación de no adherencia. Los tres grupos de situación de adherencia identificados varían estadísticamente con relación a las cuatro dimensiones estudiadas, siendo la Dimensión II relacionada con el proveedor la que aportó mayor diferencia. Conclusiones: Estos hallazgos permiten destacar la importancia de la relación paciente-proveedor en el grado de adherencia de los pacientes, haciendo necesario que la institución y el equipo de salud y enfermería enfaticen las acciones de autocuidado con apoyo, acompañamiento permanente y orientación acorde a sus necesidades, a sus expectativas y a las características individuales de las personas atendidas.

Proyecto de rehabilitación de un edificio subutilizado para generar vivienda en el área central de la ciudad de San José

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Felipe Pina Castillo

2016-01-01

Full Text Available Reseña del proyecto arquitectónico titulado “Rehabilitación de un edificio subutilizado para generar vivienda en el área central de San José”. El tema del proyecto tiene la voluntad de ser una referencia para el proceso de ejecución del Plan de Regeneración y Repoblamiento de la ciudad de San José. Esta investigación se llevó a cabo como parte del proyecto final de graduación para optar por el grado de Licenciatura en Arquitectura y Urbanismo del Instituto Tecnológico de Costa Rica. This is a review of the architectural project entitled “Rehabilitation of vacant buildings to generate housing in the central area of San José”. The subject of the project described here is intended to be a point of reference for the implementation an area of a Regeneration and Repopulation Plan of the city of San Jose. This research was undertaken as part of final graduation project in Architecture and Urbanism at the Costa Rica Institute of Technology.

PISA TESTS IN LATIN AMERICA: RESULTS IN CONTEXT

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Guillermina Tiramonti

2014-05-01

Full Text Available The educational reforms implemented in Latin America in the ‘90s introduced changes in the modes of regulation of educational systems based on the adoption of mechanisms for assessing student achievement. Since 2000, eight Latin-American countries (Argentina, Chile, Uruguay, Colombia, Brazil, Costa Rica, Mexico and Peru are involved in the PISA tests. The article presents a brief review of the social and educational situation of the Region, relevant for the interpretation and comparative analysis of the results of these tests that is presented below.

LAS HABILIDADES DEL PENSAMIENTO Y EL APRENDIZAJE SIGNIFICATIVO EN MATEMÁTICA, DE ESCOLARES DE QUINTO GRADO EN COSTA RICA

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Natalia Araya Ramírez

2014-01-01

Full Text Available Este es un artículo en el cual se analizó cómo las habilidades de pensamiento de la observación, la inducción, el razonamiento hipotético-deductivo y la abstracción en la resolución de problemas, se presentan y potencian en los escolares de quinto grado, y cómo impactan en el aprendizaje al ser estimuladas durante el proceso de mediación pedagógica, en una escuela pública de la Dirección Regional de San José, circuito 02, en 2012. La metodología para recolectar la información consistió en: aplicar un pretest y un postest a 2 grupos de quinto grado (uno era el grupo control y el otro, el experimental, la muestra total fue de 60 estudiantes. Los test contaban con ejercicios para evaluar los procesos que intervienen en las habilidades del pensamiento investigadas; luego de aplicar el pretest al grupo experimental, se administró un plan institucional didáctico inteligente en matemática, con un enfoque constructivista; asimismo se sistematizaron los logros de los discentes en un diario de campo, y en una hoja de observación se anotaron los roles del educando y el docente, mientras se desarrollaba la lección. Finalmente, se entrevistó a una docente de quinto grado del grupo control, que imparte la asignatura de matemática. Los resultados obtenidos reflejaron que, si los procesos que involucran las habilidades del pensamiento son potenciados, el educando adquiere conocimientos y habilidades cada vez más complejas, que le permitan tener conciencia de cómo aprende. Se concluye que es necesario establecer en el aprendizaje de la matemática, un programa gradual para potenciar las habilidades de pensamiento por nivel escolar, respetando la madurez y el nivel cognitivo de los educandos.

“WANT TO BE ALL FINLAND”. SIDE EFFECTS OF PISA “TODOS QUEREMOS SER FINLANDIA”. LOS EFECTOS SECUNDARIOS DE PISA

Directory of Open Access Journals (Sweden)

Javier Barquín Ruiz

2011-03-01

Full Text Available This article describes some of the considerations on the PISA (Program for International Student Assessment of the OECD, have been reviewed by the Research Group HUM-311, University of Malaga in the Project R & D-SEJ 2007-66967, led by Professor D. Angel I. Pérez Gómez. In developing this review, addressed the issue of basic skills as a potential mechanism for the development of useful life skills of individuals in the knowledge society, second-order powers specifically listed in the generic construct Learn how to Learn. Addressing these analysis, questioning the most problematic aspects.El presente artículo recoge algunas de las consideraciones que, sobre el marco de PISA (Programa para la Evaluación Internacional del Alumnado de la OCDE, han sido objeto de análisis por parte del Grupo de Investigación HUM-311 de la Universidad de Málaga en el Proyecto I+D SEJ-2007-66967, dirigido por el profesor D. Ángel I. Pérez Gómez. En el desarrollo de dicha revisión, se abordó la temática de las competencias básicas como un mecanismo potencial para el desarrollo de las capacidades útiles para la vida de los individuos en la Sociedad del Conocimiento, específicamente competencias de segundo orden recogidas genéricamente en el constructo Aprender cómo Aprender. Se abordan estos análisis, sometiendo a discusión los aspectos más problemáticos.

Influence of Progressive Central Hypovolemia on Multifractal Dimension of Cardiac Interbeat Intervals

Science.gov (United States)

2010-05-07

and 5 Istituto Fisiologia Clinica, CNR-Area Ricerca San Cataldo, Via Moruzzi 1, 56124-Pisa (Dated: May 7, 2010) Abstract We analyzed the heartbeat time...the research group of prof. B Ghe- larducci, Dipartimento di Fisiologia e Biochimica, Universitá di Pisa, and Dr. M. Varanini, Institute of Clinical

RESISTENCIA AL CORTE EN DISCONTINUIDADES CON DIFERENTES GRADOS DE RUGOSIDAD

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Javier Fernando Camacho Tauta

2009-01-01

Full Text Available En esta investigación se realizaron ensayos triaxiales sobre rocas artifi ciales elaboradascon un mortero (arena, cemento y agua de diferente resistencia. Se incluyeron cilindros sin y con una discontinuidad orientada a 60° con respecto al eje horizontal y tres diferentes grados de rugosidad, (pulida plana, pulida ondulada y ondulada. Se determinaron los parámetros de resistencia de las probetas de mortero y se analizó la infl uencia de los diferentes grados de rugosidad utilizando el criterio de Barton, obteniendo el coefi ciente de rugosidad de la discontinuidad.

Country report: utilization of MINT's research reactor

International Nuclear Information System (INIS)

Ab Khalic b Hj Wood; Adnan b Bukhari; Wee Boon Siong

2004-01-01

MINT has only one research reactor, i.e. TRIGA MKII reactor, equipped with various neutron irradiation facilities such as rotary rack and rabbit system. Apart from counting facilities for NAA work, other facilities available for the respective studies include facilities for neutron radiography and SANS. At Present most of reactor operation time has been utilized for samples irradiation related to the NAA application. Majority of the samples are from MINT analytical chemistry laboratory where the present authors work, and the rest of the samples are from local universities. They provide analytical chemistry services for other government departments as well as private companies. In order to improve the reactor utilization, the management of MINT has formed Reactor Interest Group (RIG) at the national level in 2002, which embraces members from various institutions in this country. To support the RIG activities, MINT provides seed funding to finance various activities for the reactor utilization, which include financing project to make use of SANS, neutron radiography and radioisotopes production (mainly for tracer studies carried out by MINT's tracer group) facilities, and funding for basic study in BNCT. (author)

Improving Performance: Leading from the Bottom. PISA in Focus. No. 2

Science.gov (United States)

OECD Publishing (NJ1), 2011

2011-01-01

Since the PISA (Programme for International Student Assessment) 2000 and 2009 surveys both focused on reading, one can track in detail how student reading performance has changed over that period. Among the 26 OECD (Organisation for Economic Cooperation and Development) countries with comparable results in both assessments, Chile, Germany,…

Riesgo familiar total en salud y grado de salud familiar en las familias de los pacientes con diagnostico de síndrome coronario agudo

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Ruby Elizabeth Vargas-Toloza

2012-12-01

Full Text Available Objetivo: identificar el riesgo familiar total en salud y grado de salud familiar en las familias de los pacientes con diagnóstico de síndrome coronario agudo de la Clínica San José de Cúcuta. Materiales y Métodos: Estudio cuantitativo, de tipo descriptivo transversal; en el que se calculó una muestra de 165 familias por muestreo no probabilístico. La recolección de la información se realizo por medio de los instrumentos RFT: 5-33 y ISF GEN-21 donde se clasifico el riesgo familiar total y se percibió el grado de salud familiar. Resultados: se evidencia que las familias están conformes con el modelo habitual de organización familiar en función de cada uno de los integrantes y del grupo como tal. Lo cual nos indica que toda la familia del paciente coronario lo ayuda a sobrellevar el proceso de salud-enfermedad y tiene claro el papel que juega dentro de ella permitiendo así la funcionalidad y la unidad que requiere este tipo de pacientes para su rehabilitación. Conclusiones: los factores de riesgo biológicos, sociales y del medio ambiente que clasifican a la población estudiada dentro de riesgo familiar bajo. Se evidenció un alto grado de organización y satisfacción asegurando en gran medida la adaptación y el éxito de las familias frente al proceso de salud- enfermedad por la que atraviesan algunos de los miembros especialmente si es un paciente coronario.

Neutron beam applications - Polymer study and sample environment development for HANARO SANS instrument

Energy Technology Data Exchange (ETDEWEB)

Kim, Hong Doo [Kyunghee University, Seoul (Korea); Char, Kook Heon [Seoul National University, Seoul (Korea)

2000-04-01

A new SANS instrument will be installed in HANARO reactor near future and in parallel it is necessary to develop the sample environment facilities. One of the basic items is the equipment to control the sample temperature of cell block with auto-sample changer. It is required to develop a control software for this purpose. In addition, softwares of the aquisition and analysis for SANS instrument must be developed and supplied in order to function properly. PS/PI block copolymer research in NIST will provide the general understanding of SANS instrument and instrument-related valuable informations such as standard sample for SANS and know-hows of the instrument building. The following are the results of this research. a. Construction of sample cell block. b. Software to control the temperature and auto-sample changer. c. Acquisition of the SANS data analysis routine and its modification for HANARO SANS. d. PS/PI block copolymer research in NIST. e. Calibration data of NIST and HANARO SANS for comparison. 39 figs., 2 tabs. (Author)

Problems in Deriving Italian Regional Differences in Intelligence from 2009 PISA Data

Science.gov (United States)

Cornoldi, Cesare; Giofre, David; Martini, Angela

2013-01-01

Recent results of international assessment programs (e.g., PISA) have shown a large difference in high school students' performance between northern and southern Italy. On this basis, it has been argued that the discrepancy reflects differences in average intelligence of the inhabitants of regions and is associated with genetic factors ( and ).…

PISA mathematics and reading performance differences of mainstream European and Turkish immigrant students

NARCIS (Netherlands)

Arikan, Serkan; van de Vijver, Fons J. R.; Yagmur, Kutlay

Lower reading and mathematics performance of Turkish immigrant students as compared to mainstream European students could reflect differential learning outcomes, differential socioeconomic backgrounds of the groups, differential mainstream language proficiency, and/or test bias. Using PISA reading

Statistical Techniques Utilized in Analyzing PISA and TIMSS Data in Science Education from 1996 to 2013: A Methodological Review

Science.gov (United States)

Liou, Pey-Yan; Hung, Yi-Chen

2015-01-01

We conducted a methodological review of articles using the Programme for International Student Assessment (PISA) or Trends in International Mathematics and Science Study (TIMSS) data published by the SSCI-indexed science education journals, such as the "International Journal of Science and Mathematics Education," the "International…

El aprendizaje de los escolares del multígrado con la tecnología educativa

Directory of Open Access Journals (Sweden)

Dora Caridad Peña-Infante

2013-01-01

Full Text Available Abordó el empleo de la tecnología educativa en la escuela primaria multígrado derivado de los problemas de aprendizaje que presentan los escolares de este contexto y las insuficientes sugerencias metodológicas que poseen los docentes para la utilización de estos medios en el proceso pedagógico. Se tomó como referencia los resultados de la Tesis de Maestría defendida en el 2008 por la autora principal del artículo, además se procesó la información empírica obtenida mediante la aplicación de diferentes métodos y se generalizaron sus resultados, apoyados en el estudio de diversos textos y documentos relativos al estudio de las escuelas multígrado, escritos por reconocidos especialistas cubanos. El objetivo principal del artículo fue ofrecer al lector un conjunto de consideraciones teórico-prácticas acerca de cómo utilizar la tecnología educativa como recurso didáctico en el proceso pedagógico de la escuela multígrado para favorecer el aprendizaje de los escolares.

Key Insights from PISA 2015 for the UK Nations. NFER Education Briefings

Science.gov (United States)

National Foundation for Educational Research, 2016

2016-01-01

The Programme for International Student Assessment (PISA) is a worldwide research project involving schools and students in over 70 countries. It is run by the Organisation for Economic Co-operation and Development (OECD), takes place every three years, and is designed to examine how 15-year-olds can apply what they have learned in school to real…

Overview of the Dalat Nuclear Research Reactor

International Nuclear Information System (INIS)

Nguyen Nhi Dien; Nguyen Thai Sinh; Luong Ba Vien

2016-01-01

The present reactor called Dalat Nuclear Research Reactor (DNRR) has been reconstructed from the former TRIGA Mark II reactor which was designed by General Atomic (GA, San Diego, California, USA), started building in early 1960s, put into operation in 1963 and operated until 1968 at nominal power of 250 kW. In 1975, all fuel elements of the reactor were unloaded and shipped back to the USA. The DNRR is a 500-kW pool-type research reactor using light water as both moderator and coolant. The reactor is used as a neutron source for the purposes of: (1) radioactive isotope production; (2) neutron activation analysis; and (3) research and training

Why Do Boys and Girls Perform Differently on PISA Reading in Finland? The Effects of Reading Fluency, Achievement Behaviour, Leisure Reading and Homework Activity

Science.gov (United States)

Torppa, Minna; Eklund, Kenneth; Sulkunen, Sari; Niemi, Pekka; Ahonen, Timo

2018-01-01

The present study examined gender gap in Program for International Student Assessment (PISA) Reading and mediators of the gender gap in a Finnish sample (n = 1,309). We examined whether the gender gap in PISA Reading performance can be understood via the effects of reading fluency, achievement behaviour (mastery orientation and task-avoidant…

An Investigation of International Science Achievement Using the OECD's PISA 2006 Data Set

Science.gov (United States)

Milford, Todd

School Effectiveness Research (SER) is concerned with efforts to better understand the effectiveness enhancing relationship between student and school variables and how these variables primarily influence academic achievement (Scheerens, 2004). However, one identified methodological shortcoming in SER is the absence of cross-cultural perspectives (Kyriakides, 2006). This is a concern as what may prove effective in one nation does not necessarily mean that it can be easily and seamlessly imported into another with the same results. This study looked at the relationships between science self-beliefs and academic achievement in science across all nations who participated in the Programme for International Student Assessment (PISA) in 2006. It further explored the variance accounted for by cultural, social and economic capital (the elements of the PISA socioeconomic status variable) for each country in PISA 2006 when predicting scientific literacy. Lastly, it used hierarchical linear modeling (HLM) to analyze data from PISA 2006 for nations experiencing high rates of immigration (i.e., Germany, Spain, Canada, the United States, Australia and New Zealand). The outcome measures used for these countries were achievement scores in science, mathematics and reading. The variables examined at the student level were science self-efficacy, science self-concept, immigrant status and socioeconomic status. The variables examined at the school level were student level aggregates of school proportion of immigrants and school socioeconomic status. In the correlation analysis between science literacy and either science self-concept of science self-efficacy, findings suggest that at the student level, students with both higher science self-concept and higher science self-efficacy tend to achieve higher academically. However, at the country level the relationship was negative between self-concept and academic achievement in science (i.e., countries with higher science self-concept tend

Student Engagement and Academic Performance in Mexico: Evidence and Puzzles from PISA

Science.gov (United States)

Weiss, Christopher C.; García, Emma

2015-01-01

This paper investigates the relationship between student engagement--with teachers and schools--and academic performance in Mexico. It uses hierarchical linear models and data from the OECD 2003 PISA study to examine the relative importance of engagement in comparison to other educational inputs--school and family characteristics--as predictors of…

La incidencia de las clases particulares en España a través de los datos de PISA

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Ariadne Runte-Geidel

2013-01-01

Full Text Available Investigaciones internacionales han puesto de manifi esto que durante las últimas décadas ha existido una creciente expansión mundial de la utilización de clases de refuerzo educativo por parte de estudiantes de la enseñanza obligatoria. Estas clases ofrecen actividades externas a la escuela que pretenden complementar o ampliar conocimientos. A esta educación «paralela» la denominan internacionalmente Shadow Education, porque acompaña a la educación formal como si fuese su propia sombra. Este artículo analiza la utilización de la educación «en la sombra» por los alumnos de la Enseñanza Secundaria Obligatoria en el contexto español de la última década por medio de la información que proporciona PISA. El objetivo es estimar la proporción de utilización de este tipo de clases en España y averiguar cómo ha progresado este uso en el transcurrir de la última década. Para ello hemos analizado los datos del estudio PISA desde el año 2000 hasta el 2009.International studies about educational tendencies have shown that there has been a remarkable increase in using school reinforcement lessons by students of Compulsory Secondary Education during the last decade. These lessons provide students with a supplement or extension of the knowledge. This type of education is known as Shadow Education, because it accompanies a formal education as if it were its own shadow. This article analyzes the use of Shadow Education by students of Compulsory Secondary Education in the Spanish context of the last decade. We intend to verify in which proportion these kinds of lessons are being used and also the way this has increased recently. In order to carry out this study, we have analyzed data from the PISA report from 2000 to 2009.

LA EXPERIENCIA DEL PISA EN ALEMANIA: RECEPCIÓN, REFORMAS RECIENTES Y REFLEXIONES SOBRE UN SISTEMA EDUCATIVO EN CAMBIO

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Kotthoff Hans-Georg

2009-01-01

Full Text Available Este estudio introductorio al monográfico ofrece un mapa de los contenidos y temáticas abordadas por los estudios seleccionados entre la producción científica aparecida en Alemania sobre el PISA desde 2001 hasta 2008. El estudio incluye una descripción analítica del actual sistema educativo alemán y un análisis de los cambios que se han ido introduciendo después del "shock" de PISA, dedicando especial atención a las cuestiones a la descentralización y autonomía de las escuelas y la evaluación externa y monitorización del sistema educativo. Finalmente, se reflexiona críticamente sobre los desafíos que PISA plantea en una nación de fuerte tradición cultural y educativa y grande comunidad académica en el campo de la educación, ejemplificando la vigencia de la ambivalente cuestión alemana de la Bildung (formación en el actual contexto de cambio de los sistemas educativos ante las sociedades basadas en el conocimiento.

DEVELOPING PISA-LIKE MATHEMATICS TASK WITH INDONESIA NATURAL AND CULTURAL HERITAGE AS CONTEXT TO ASSESS STUDENTS MATHEMATICAL LITERACY

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Wuli Oktiningrum

2016-01-01

Full Text Available The aim of this research is produce a set of PISA-like mathematics task with Indonesia natural and cultural heritage as context which are valid, practical, to assess students’ mathematics literacy. This is design research using type of development research with formative evaluation. A total of 20 students of SMP Negeri 1 Palembang. Beside, 10 experts were involved in this research to assess the feasibility of prototyping in terms of content, context and language. Walk through, documentation, questionnaire, test result, and interviews are way to collect the data. This research produced a PISA-like math task is as many 12 category of content, context, and process valid, practical and has potential effect. The validity came empirical evaluation of validation and reliability testing during small group. From the field test, we conclude that the tasks also potentially effect to the students’ mathematical literacy in activating the indicators of each Fundamental Mathematical Capabilities.Keywords: development research, PISA task, mathematics literacy, fundamental mathematical capabilities DOI: http://dx.doi.org/10.22342/jme.7.1.2812.1-8

A Comparison of Mother-Tongue Curricula of Successful Countries in PISA and Turkey by Higher-Order Thinking Processes

Science.gov (United States)

Cer, Erkan

2018-01-01

Purpose: The purpose of the current study is to reveal general qualities of the objectives in the mother-tongue curricula of Hong Kong and Shanghai-China, South Korea, Singapore, and Turkey in terms of higher-order thinking processes specified by PISA tests. Research Methods: In this study, the researcher used a qualitative research design.…

Giordano da Pisa and the language of angels

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Alessia Francone

2012-06-01

Full Text Available Among the issues about the angels considered by the Dominican preacher Giordano da Pisa, this essay studies the problem of their language. The question of the locutio angelica had become quite relevant in the scholastic thought from the XIIIth century and had been widely discussed by Thomas Aquinas and Giles of Rome; the study of this argument in Giordano da Pisa’s sermons shows the transition in the homiletic texts of a highly speculative theme and we can see how the preacher, who combines rather freely the positions of Thomas and Giles, filters the question for his lay public, simplifying the more difficult passages.

Recent development on Malaysian Small Angle Neutron Scattering (MySANS) facility upgrading and related research activities

International Nuclear Information System (INIS)

Abdul Aziz Bin Mohamed; Rafayudi Jamro; Razali Kassim; Muhammad Rawi Mat Zin; Azali Bin Muhammad; Muhd Noor Yunus; Dahlan Hj Mohd; Faridah Md Idris

2006-01-01

This paper describes the recent progress of the MySANS - 'mini' SANS facility and its present applications in materials science and technology research and education. Both management and technical strategies are generally explained. The formation of Reactor Interest Group (RIG) has lead to several experimental projects which collaborative work between MINT and local universities/research institutes. In addition a future work plan is also noted. (author)

Efecto de un programa de habilidades sociales: autoestima, asertividad y resiliencia en los adolescentes del Colegio Secundario San Juan Bautista

OpenAIRE

Grández Sayón, Mersy; Universidad Nacional de la Amazonía Peruana; Salazar Chávez, Vanessa Amalia; Universidad Nacional de la Amazonía Peruana; Tucto Pérez, Gina Wendy; Universidad Nacional de la Amazonía Peruana; Matute Panaifo, Eva Lucía; Universidad Nacional de la Amazonía Peruana

2016-01-01

El presente trabajo de investigación tuvo por objetivo determinar el efecto de un programa de habilidades sociales en autoestima, asertividad y resiliencia en adolescentes del Colegio San Juan Bautista, 2010. El método empleado fue el cuantitativo y el diseño fue el experimental de tipo cuasiexperimental. La población de estudio fue de 157 adolescentes del 5to grado de secundaria. La muestra estuvo conformada por 68 adolescentes, 34 para el grupo experimental y 34 para el grupo control, la cu...

Efecto de un programa de habilidades sociales: autoestima, asertividad y resiliencia en los adolescentes del Colegio Secundario San Juan Bautista

OpenAIRE

Grández Sayón, Mersy; Universidad Nacional de la Amazonía Peruana; Salazar Chávez, Vanessa Amalia; Universidad Nacional de la Amazonía Peruana; Tucto Pérez, Gina Wendy; Universidad Nacional de la Amazonía Peruana; Matute Panaifo, Eva Lucía; Universidad Nacional de la Amazonía Peruana

2011-01-01

El presente trabajo de investigación tuvo por objetivo determinar el efecto de un programa de habilidades sociales en autoestima, asertividad y resiliencia en adolescentes del Colegio San Juan Bautista, 2010. El método empleado fue el cuantitativo y el diseño fue el experimental de tipo cuasiexperimental. La población de estudio fue de 157 adolescentes del 5to grado de secundaria. La muestra estuvo conformada por 68 adolescentes, 34 para el grupo experimental y 34 para el grupo control, la cu...

Comunicación asertiva en la construcción del pensamiento crítico. Experiencia con estudiantes de grado sexto en San Antonio Norte

OpenAIRE

Rivera Sanabria, Margoth

2017-01-01

Este proyecto está inscrito en la línea de investigación en Didácticas de las Ciencias Sociales, así mismo en el macro proyecto de pensamiento Social-crítico para la comprensión, interpretación y transformación del conocimiento escolar en contextos socio-culturales e históricos. Los derroteros de este proyecto fueron potenciar las habilidades para la vida que les permitan fortalecer las destrezas psicosociales necesarias a los jóvenes del grado sexto para la construcción de procesos personale...

Iconic Destination: a Snapshot of Sustainable Tourism in Pisa

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Silvia Sarti

2015-12-01

Full Text Available Tourism is one of the world's fastest growing industries. According to the World Tourism Organization, Italy is the fifth most visited country in the world, with more than 47.7 million tourists a year (2013. At the same time, the increasing number of studies focused on sustainable tourism demonstrates a growing interest about the topic. In addition, practitioners’ attitude is changing and the most important actors of the market are acting in a more sustainable way and developing reports on their eco-friendly performances. Nowadays, the entire supply chain maybe environmentally sustainable. From the reservation to the post-holiday phase, it is possible to select the more eco-friendly suppliers. The main companies operating in the different stages of the process are demonstrating a concrete interest on sustainable development. This new challenge is generated through the information flow between local authorities, private firms and final customers. We propose to make a reflection based on the latter actors’ attitude. Our research aims to investigate the level of sensitivity of tourists about environmental sustainability from two different perspectives: self-evaluation and real purchasing behavior. We conducted a face-to-face survey among tourists in Pisa, in Piazza dei Miracoli, during May 2015. By using a structured questionnaire, we gathered primary data from a sample of 406 respondents. We selected respondents randomly. Pisa is the perfect location to obtain information from several typologies of tourists, with different levels of awareness of sustainable issues. Itis one of the most important tourist destination in Italy and it is an iconic destination recognized worldwide thanks to the attractiveness of the leading tower. The results of our study is a snapshot of the current level of awareness among tourists. The analysis of the questionnaires revealed tourist profiles, their eco-friendly behaviors, their concerns about sustainability

Mathematics Curriculum in Ireland: The Influence of PISA on the Development of Project Maths

Science.gov (United States)

Kirwan, Liz

2015-01-01

This article interrogates the extent to which the Organization for Economic Cooperation and Development (OECD) through its Programme for International Student Assessment (PISA) influenced the development of Project Maths, a new second-level mathematics education policy in Ireland. It argues that the Irish government, in its revision of mathematics…

The Use (and Misuse) of PISA in Guiding Policy Reform: The Case of Spain

Science.gov (United States)

Choi, Álvaro; Jerrim, John

2016-01-01

In 2013 Spain introduced a series of educational reforms explicitly inspired by the Programme for International Student Assessment (PISA) 2012 results. These reforms were mainly implemented in secondary education--based upon the assumption that this is where Spain's educational problems lie. This paper questions this assumption by attempting to…

Small Angle Neutron Scattering instrument at Malaysian TRIGA reactor

Energy Technology Data Exchange (ETDEWEB)

Mohd, Shukri; Kassim, Razali; Mahmood, Zal Uyun [Malaysian Inst. for Nuclear Technology Research (MINT), Bangi, Kajang (Malaysia); Radiman, Shahidan

1998-10-01

The TRIGA MARK II Research reactor at the Malaysian Institute for Nuclear Research (MINT) was commissioned in July 1982. Since then various works have been performed to utilise the neutrons produced from this steady state reactor. One of the project involved the Small Angle Neutron Scattering (SANS). (author)

A new small-angle neutron scattering spectrometer at China Mianyang research reactor

Energy Technology Data Exchange (ETDEWEB)

Peng, Mei, E-mail: pm740509@163.com; Sun, Liangwei; Chen, Liang; Sun, Guangai; Chen, Bo; Xie, Chaomei; Xia, Qingzhong; Yan, Guanyun; Tian, Qiang; Huang, Chaoqiang; Pang, Beibei; Zhang, Ying; Wang, Yun; Liu, Yaoguang; Kang, Wu; Gong, Jian

2016-02-21

A new pinhole small-angle neutron scattering (SANS) spectrometer, installed at the cold neutron source of the 20 MW China Mianyang Research Reactor (CMRR) in the Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, has been put into use since 2014. The spectrometer is equipped with a multi-blade mechanical velocity selector, a multi-beam collimation system, and a two-dimensional He-3 position sensitive neutron detector. The q-range of the spectrometer covers from 0.01 nm{sup −1} to 5.0 nm{sup −1}. In this paper, the design and characteristics of the SANS spectrometer are described. The q-resolution calculations, together with calibration measurements of silver behenate and a dispersion of nearly monodisperse poly-methyl-methacrylate nanoparticles indicate that our SANS spectrometer has a good performance and is now in routine service. - Highlights: • A new SANS spectrometer has been put into use since 2014 in China. • One MBR selector possesses a higher resolution compared with traditional selector is used. • The spectrometer has a good performance and is now in routinely service.

Patterns of Parental Involvement in Selected OECD Countries: Cross-National Analyses of PISA

Science.gov (United States)

Hartas, Dimitra

2015-01-01

Using data from the Programme for International Student Assessment (PISA), patterns of parental involvement were examined in selected OECD countries. The findings showed that, irrespective of educational qualifications, parents were frequently involved in their children's learning at the start of primary school and at age 15. Cross-national…

I problemi di matematica della Scuola Normale Superiore di Pisa

CERN Document Server

Profeti, Alessandro

1998-01-01

Nasce come aggiornamento del volume precedente ("I problemi di Matematica della Scuola Normale", 1984) e raccoglie gli esercizi di matematica assegnati all'esame di ammissione alla Scuola Normale Superiore di Pisa dal 1985 al 1997, con la loro risoluzione. Per rendere più efficace lo scopo didattico viene anche presentata una scelta di problemi relativi al periodo precedente (1905-1984). Il libro si rivolge a studenti e docenti della Scuola Secondaria, e si chiude con un Glossario in cui vengono richiamati i termini usati.

Grado de motivación por el aprendizaje en estudiantes de enfermería de una universidad pública.

OpenAIRE

Casanova-Rubio, María; Loli-Ponce, Rudi; Sandoval-Vegas, Miguel; Velásquez-Perales, Rosa

2017-01-01

Objetivos: Determinar el grado de Motivación por el Aprendizaje en estudiantes de Enfermería de la UNMSM en el año 2012. Material y Métodos: Investigación descriptiva, cuantitativa, de corte transversal. La muestra estuvo conformada por 68 estudiantes de Enfermería. El grado de motivación se determinó mediante la aplicación de un cuestionario tipo Likert modificada, sometida a juicio de expertos (p

en el grado de turismo

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Mª del Carmen Mínguez García

2014-01-01

Full Text Available En el contexto de la revolución tecnológica e informacional, resultado de la globalización económica y social, el turismo es uno de los sectores que más rápidamente ha incorporado los avances tecnológicos en la adecuación del territorio. Por ello es preciso tener un conocimiento de las realidades asociadas a la creación del espacio turístico y a sus procesos de transformación, siendo clave, en el ámbito educativo y en el técnico-profesional, el trabajo del geógrafo. La apuesta por la profesionalización y la calidad del sector turístico español se materializó con la aprobación del Grado Universitario en Turismo, cuyo programa refleja la importancia del conocimiento del medio con numerosas asignaturas. La juventud del grado ha demostrado la necesidad de recursos didácticos específicos para su enseñanza, por ello se planteó el proyecto BIG-Turismo, que consiste en la creación de un banco de imágenes propio, enriquecido con materiales complementarios. Su objetivo es convertirse en una fuente de consulta de referencia para la Geografía del Turismo. Para ello los materiales generados están disponibles online, a través de una SIGWeb creada con la plataforma ArcGIS Online y una página Web, que permiten un trabajo activo entre profesores y estudiantes, favoreciendo la búsqueda de información, la diversificación de actividades y el desarrollo de habilidades y capacidades.

San Francisco folio, California, Tamalpais, San Francisco, Concord, San Mateo, and Haywards quadrangles

Science.gov (United States)

Lawson, Andrew Cowper

1914-01-01

The five sheets of the San Francisco folio the Tamalpais, Ban Francisco, Concord, Ban Mateo, and Haywards sheets map a territory lying between latitude 37° 30' and 38° and longitude 122° and 122° 45'. Large parts of four of these sheets cover the waters of the Bay of San Francisco or of the adjacent Pacific Ocean. (See fig. 1.) Within the area mapped are the cities of San Francisco, Oakland, Berkeley, Alameda, Ban Rafael, and San Mateo, and many smaller towns and villages. These cities, which have a population aggregating about 750,000, together form the largest and most important center of commercial and industrial activity on the west coast of the United States. The natural advantages afforded by a great harbor, where the railways from the east meet the ships from all ports of the world, have determined the site of a flourishing cosmopolitan, commercial city on the shores of San Francisco Bay. The bay is encircled by hilly and mountainous country diversified by fertile valley lands and divides the territory mapped into two rather contrasted parts, the western part being again divided by the Golden Gate. It will therefore be convenient to sketch the geographic features under four headings (1) the area east of San Francisco Bay; (2) the San Francisco Peninsula; (3) the Marin Peninsula; (4) San Francisco Bay. (See fig. 2.)

The education system of Finland and its success in the PISA test

OpenAIRE

Emilio Jesús Lizarte Simón; Martin Gripenberg

2012-01-01

Once again, the Finnish educational system has scored well in the PISA-tests. Among its various organizational structures and policies, the consensus of the educational policy - which is reflected by uniform structures and directions for developing the curriculum - can be identified as a reason for the success. The municipalities are responsible for the organization and realization of the primary education as well as establishing a more detailed curriculum in accordance with the goals of the ...

Low-Performing Students: Why They Fall Behind and How to Help Them Succeed. PISA

Science.gov (United States)

OECD Publishing, 2016

2016-01-01

There is no country or economy participating in PISA 2012 that can claim that all of its 15-year-old students have achieved a baseline level of proficiency in mathematics, reading and science. Poor performance at school has long-term consequences, both for the individual and for society as a whole. Reducing the number of low-performing students is…

A Critical Review of the Recent Improvements in Minimizing Nuclear Waste by Innovative Gas-Cooled Reactors

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E. Bomboni

2008-01-01

Full Text Available This paper presents a critical review of the recent improvements in minimizing nuclear waste in terms of quantities, long-term activities, and radiotoxicities by innovative GCRs, with particular emphasis to the results obtained at the University of Pisa. Regarding these last items, in the frame of some EU projects (GCFR, PUMA, and RAPHAEL, we analyzed symbiotic fuel cycles coupling current LWRs with HTRs, finally closing the cycle by GCFRs. Particularly, we analyzed fertile-free and Pu-Th-based fuel in HTR: we improved plutonium exploitation also by optimizing Pu/Th ratios in the fuel loaded in an HTR. Then, we chose GCFRs to burn residual MA. We have started the calculations on simplified models, but we ended them using more “realistic” models of the reactors. In addition, we have added the GCFR multiple recycling option using keff calculations for all the reactors. As a conclusion, we can state that, coupling HTR with GCFR, the geological disposal issues concerning high-level radiotoxicity of MA can be considerably reduced.

Description of the structural evolution of a hydrating portland cement paste by SANS

International Nuclear Information System (INIS)

Haeussler, F.; Eichhorn, F.; Baumbach, H.

1994-01-01

On the spectrometer MURN at the pulsed reactor IBR-2 dry Portland cement, silica fume, and a hydrating Portland cement paste were studied by small-angle neutron scattering (SANS). By using the TOF-method a momentum transfer from 0.07 nm -1 to 7 nm -1 is detectable. Every component (dry cement powder, clinker minerals, hydrating cement pastes) shows a different scattering behaviour. In the measured Q-region the hardening cement paste does not show a Porod-like behaviour of SANS-curves. In contrast the Porod's potential law holds for dry powder samples of clinker minerals and silica fume. In experiments carried out to observe the hydration progress within the first 321 days the characteristics of the scattering curves (potential behaviour, the radius of gyration, and the macroscopic scattering cross section at Q = 0 nm -1 were measured. Some evolution of the inner structure of the hardened cement paste was noted. (orig.)

Instructional practices and science performance of 10 top-performing regions in PISA 2015

Science.gov (United States)

Lau, Kwok-chi; Lam, Terence Yuk-ping

2017-10-01

This study analysed 10 top-performing regions in PISA 2015 on their science performances and instructional practices. The regions include Singapore, Japan, Estonia, Taipei, Finland, Macao, Canada, Hong Kong, China and Korea. The science performances of the 10 regions and their teaching practices are described and compared. The construct of enquiry-based instruction as developed in PISA 2015 is revised into two new constructs using factor analysis. Then, the relationships of the teaching practices with science performance are analysed using hierarchical linear modelling. Adaptive instruction, teacher-directed instruction and interactive application are found positively associated with performance in all regions, while investigation and perceived feedback are all negative. The regions except Japan and Korea tend to have a high frequency of teacher-directed instruction facilitated by more or less authoritative class discussion in class. A fair amount of practical work is done, but not many of them are investigations. The cultural influences on teaching practices are discussed on how an amalgam of didactic and constructivist pedagogy is created by the Western progressive educational philosophy meeting the Confucian culture. The reasons for investigation's negative association with performance are also explored.

Developing Teaching Materials PISA-Based for Mathematics and Science of Junior High School

Science.gov (United States)

Somakim; Suharman, Andi; Madang, Kodri; Taufiq

2016-01-01

This research aims to develop valid and practical teaching materials for mathematics and science lesson PISA-based for junior high school students and to determine potential effects on students in scientific activity. Subjects of this study were students of Junior High School 9 Palembang (SMP Negeri 9 Palembang). The method used in this study is…

¿Qué significa tener especialistas con el título de Segundo Grado?

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José Suárez Lezcano

2015-12-01

Full Text Available La Salud Pública cubana es uno de los logros más significativos y trascendentales de la Revolución Cubana. El Sistema Cubano de Salud tiene, entre sus eslabones para los graduados de Doctor en Medicina o Doctor en Estomatología, la obtención de los títulos de Especialista de Primer Grado y de Segundo Grado. Pero, ¿qué diferencia uno del otro? El Especialista de Segundo Grado es aquel que ha demostrado un dominio de excelencia en su especialidad; su nivel de desarrollo de habilidades y sus conocimientos lo ubican al más alto nivel de la Ciencia a nivel internacional. Y eso se demuestra con varios hechos: - Todo Especialista de Segundo Grado ha presentado, al menos, diez trabajos sobre su especialidad en congresos, simposios, jornadas y en actividades científicas de nivel municipal, provincial, nacional o internacional. - Ha recibido cursos o adiestramientos nacionales o extranjeros, provinciales y municipales, con una duración total equivalente como mínimo a 200 horas. - Ha participado como profesor en cursos de postgrado de su especialidad u otras afines, con no menos de 60 horas acumuladas impartidas personalmente. - Ha presentado, para la evaluación por el tribunal, de los ejemplares completos de, al menos, dos trabajos publicados en revistas científico-técnicas cubanas, provinciales o nacionales, impresas o electrónicas con sello del Ministerio de Ciencia, Tecnología y Medio Ambiente (CITMA y extranjeras publicadas en Base de datos LILACS y SCIELO. En dos de sus publicaciones es el primer autor. Hay muchos profesionales que tienen consideradas como publicaciones su participación como autor en la elaboración de planes y programas de estudios, en patentes obtenidas o informes de registro sobre ensayos clínicos realizados, con el correspondiente aval del Centro Nacional Coordinador de Ensayos Clínicos (CENCEC o del Centro para el Control Estatal de la Calidad de los Medicamentos (CECMED; también hay profesionales que han

A case for historic joint rupture of the San Andreas and San Jacinto faults.

Science.gov (United States)

Lozos, Julian C

2016-03-01

The San Andreas fault is considered to be the primary plate boundary fault in southern California and the most likely fault to produce a major earthquake. I use dynamic rupture modeling to show that the San Jacinto fault is capable of rupturing along with the San Andreas in a single earthquake, and interpret these results along with existing paleoseismic data and historic damage reports to suggest that this has likely occurred in the historic past. In particular, I find that paleoseismic data and historic observations for the ~M7.5 earthquake of 8 December 1812 are best explained by a rupture that begins on the San Jacinto fault and propagates onto the San Andreas fault. This precedent carries the implications that similar joint ruptures are possible in the future and that the San Jacinto fault plays a more significant role in seismic hazard in southern California than previously considered. My work also shows how physics-based modeling can be used for interpreting paleoseismic data sets and understanding prehistoric fault behavior.

A case for historic joint rupture of the San Andreas and San Jacinto faults

Science.gov (United States)

Lozos, Julian C.

2016-01-01

The San Andreas fault is considered to be the primary plate boundary fault in southern California and the most likely fault to produce a major earthquake. I use dynamic rupture modeling to show that the San Jacinto fault is capable of rupturing along with the San Andreas in a single earthquake, and interpret these results along with existing paleoseismic data and historic damage reports to suggest that this has likely occurred in the historic past. In particular, I find that paleoseismic data and historic observations for the ~M7.5 earthquake of 8 December 1812 are best explained by a rupture that begins on the San Jacinto fault and propagates onto the San Andreas fault. This precedent carries the implications that similar joint ruptures are possible in the future and that the San Jacinto fault plays a more significant role in seismic hazard in southern California than previously considered. My work also shows how physics-based modeling can be used for interpreting paleoseismic data sets and understanding prehistoric fault behavior. PMID:27034977

Geothermal training at the International Institute of Geothermal Research in Pisa, Italy

International Nuclear Information System (INIS)

Dickson, M.H.; Fanelli, M.

1990-01-01

Between 1985 and 1990 the International School of Geothermics of Pisa has held 5 long-term courses, attended by 93 trainees. This paper reports that since 1970, when it began its activity, the Italian geothermal training center has prepared a total of 293 goethermists from 64 countries. Under its present structure the International School of Geothermics organizes short courses and seminars, along with the long-term courses directed mainly at geothermal exploration

IV Jornada de Estudiantes del Grado en Ciencia y Tecnología de los Alimentos

OpenAIRE

Morante, Sonia; Pérez, Damián; Sierra, Isabel

2014-01-01

Comunicaciones y actividades realizadas en la IV Jornada de Estudiantes del Grado en Ciencia y Tecnología de los Alimentos en la Universidad Rey Juan Carlos, Escuela Superior de Ciencias Experimentales y Tecnología, Campus de Móstoles

Escalas de Envolvimento dos alunos na escola: Estudo da validade externa da escala de engagement usada no PISA e do "Student Engagement School Scale"

OpenAIRE

Veiga, Feliciano

2011-01-01

Procedeu-se ao estudo da validade externa da Escala de Engagement usada no PISA (unidimensional)e da Student Engament in School Scale (SES)com três factores (envolvimento cognitivo, afectivo e comportamental) This article presents the study of the external validity of Engagement Scale used in PISA (one dimension)and of the Engament in School Scale (SES)with three factores (cognitive, emotional and behavioral involvement)

Hva kan norsk skole lære av PISA-vinneren Finland?

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Svein Østerud

2016-05-01

Full Text Available During the last two decades, we have seen an increasing globalization of the education sector, in particular expressed through the implementation of international tests organized by OECD. The use of international tests as a policy tool has been legitimized within international educational development for the purpose of measuring education quality. The normative power of high-stakes standardized testing can be understood as a global testing culture, particularly associated with the three-yearly Student Assessment (PISA in reading, mathematics and science. The testing culture permeates all aspects of school life, creating an atmosphere of competition not only between schools, but also between countries. At the top of the ranking lists of the participating countries we find Finland; their students do slightly better than the students in Singapore and Canada. Paradoxically enough, the Finnish people busy themselves less with the PISA Assessments than people in many other countries, and have kept OECD's New Public Management-oriented reform proposals at a distance. The Finns have always stuck to their locally based school: the authorities have given the highly educated teachers confidence and professional autonomy. There is no doubt that we can learn from the Finnish school system, but not by imitating it. The success of the Finnish school is due to a complex interaction of several factors. Only to the extent that we acknowledge this, can we draw inspiration and guidance from Finnish education for our own school development.

Jumping to Conclusions--The PISA Knee-Jerk: Some Remarks on the Current Economic-Educational Discourse

Science.gov (United States)

Bittlingmayer, Uwe H.; Boutiuc, Alina Florentina; Heinemann, Lars; Kotthoff, Hans-Georg

2016-01-01

Ever since PISA studies have been constantly present in mainstream media, a close relation between academic achievement and economic outcome has been routinely presumed. This essay takes a closer look at some of the most common lines of argument, then goes on to outline a critique of the assumptions underlying the alleged causal relationship…

Issues with PISA's Use of Its Data in the Context of International Education Policy Convergence

Science.gov (United States)

Murphy, Dan

2014-01-01

In its analysis of data it collected in 2006, the Programme for International Student Assessment (PISA) survey by the Organisation for Economic Co-operation and Development (OECD) used a variety of statistical methods to arrive at the 'key findings' that school autonomy, school competition and the public posting of student achievement data were…

Estrategias de aprendizaje implementadas por estudiantes de sexto grado de primaria a partir del uso de computadoras e Internet en un modelo 2:1, como apoyo a los procesos de aprendizaje curricular en Ciencias y Estudios Sociales

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Catalina Espinoza Ortiz

2015-01-01

Full Text Available El propósito de la investigación fue determinar las estrategias de aprendizaje a partir del uso de computadoras XO-01, Classmate PC y Magallanes en un modelo de proporción 2:1 y el uso de Internet, en las materias de Ciencias y Estudios Sociales, por estudiantes de sexto grado de primaria de la escuela León Cortes Castro en San Marcos de Tarrazú en Costa Rica.El estudio se ejecutó con tres grupos de sexto grado de primaria según el sistema educativo costarricense, durante el año 2011. Los datos recolectados corresponden a 70 estudiantes y los 3 docentes de grado correspondientes a cada grupo. Cada uno de los grupos trabajó con tecnologías diferentes, un grupo con XO-01, otro grupo con Classmate PC y el tercero con Classmate Magallanes; todos los grupos utilizando una computadora por cada dos estudiantes (2:1. Para desarrollar la investigación se aplicaron instrumentos a estudiantes y docentes. Ambos instrumentos de tipo cualitativo fueron auto aplicados y bajo anonimato. La información recopilada fue procesada y se aplicó un análisis de tendencias agrupando los datos según las escalas y subescalas desarrolladas en los cuestionarios. Para el proceso de sistematización y análisis se usó como marco de referencia la propuesta de Jesús Beltrán y su definición y categorización de estrategias de aprendizaje.Los resultados señalan que en el grupo de estudiantes se desarrollaron estrategias de sensibilización, elaboración y metacognición. En el caso del grupo docente, la investigación permitió identificar las principales actividades desarrolladas para tratar el contenido del plan de estudios de Ciencias y Estudios Sociales, a saber: resúmenes, cuestionarios y esquemas.

El sistema educativo de Finlandia y su ??xito en la prueba PISA

OpenAIRE

Gripenberg, Martin; Lizarte Sim??n, Emilio Jes??s

2012-01-01

Las pruebas PISA muestran una vez m??s el buen resultado referido al rendimiento escolar en Finlandia. Entre sus variadas estructuras organizativas y directivas puede discurrirse la existencia de un consenso sobre la pol??tica educativa com??n que refleja las directrices a considerar en el desarrollo del curr??culo. Los municipios tienen una gran relevancia a la hora de organizar y concretar la educaci??n b??sica adem??s de definir las intenciones en el curr??culo. Los centros y l...

Prevalencia y grado de gingivitis asociada a placa dentobacteriana en niños

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Miriam Lucía Rocha Navarro

2014-01-01

Full Text Available Introducción: Las enfermedades periodontales (EPs son comunes en niños y adolescentes, y algunas son rápidamente destructivas. El consenso internacional de Periodontología de 1999, vigente hasta hoy día, incluyó a la gingivitis como parte de las EPs. Este estudio se enfocó en la gingivitis inducida por placa dentobacteriana (PDB. Estudios previos reportan porcentajes similares de prevalencia en niños Nigerianos, Polacos y Tanzaneses de alrededor del 54.4%. Sin embargo Oh TJ y col. encontró una presencia del 70% en niños Estadounidenses. En México, hay una amplia discrepacia en su prevalencia que oscila entre el 20.6% - 91.3%. Método: Estudio observacional, transversal y descriptivo de niños que acudieron al Departamento de Odontopediatría de la Universidad de La Salle Bajío, A. C. Se revisó un total de 545 niños, y de ellos se reclutaron 350 niños con gingivitis de entre 3-14 años de edad, ambos sexos, clasificados sistémicamente como tipo I y II y sin capacidades diferentes. El protocolo de investigación fue revisado y aprobado por el Comité Ético Institucional. Los padres de los niños incluidos firmaron una Carta de Consentimiento Informado. A los niños se les aplicó un cuestionario de salud sistémica y uno de higiene dental, así como evaluación clínica, periodontal y de control de PDB. A los padres se les aplicó un cuestionario de hábitos higiénicos y preventivos. Se utilizó estadística descriptiva, X2 y correlación múltiple. Resultados: Los niños presentaron una prevalencia de 64.2%, con una mediana grado I de gingivitis, sin embargo, se observó una tendencia a incrementarse el grado de ésta, conforme el niño tenía más edad, así como un incremento en la presencia de PDB de acuerdo con el índice de O’Leary. No se observaron diferencias en el grado de gingivitis entre sexos. Conclusión: El índice gingival en los niños estudiados es grado I, que es considerado leve y éste es independiente del

Minería, conflicto y mediadores locales: Minera San Xavier en Cerro de San Pedro, México Mineira, conflito e mediadores locais: Minera San Xavier em Cerro de San Pedro Mining, conflict and local brokers: Minera San Xavier in Cerro de San Pedro

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Hernán Horacio Schiaffini

2011-12-01

Full Text Available Este trabajo indaga en las instancias de mediación que intervienen en la articulación de procesos económicos de gran escala y su puesta en práctica local. Basándonos en el conflicto que se produjo en el Municipio de Cerro de San Pedro (San Luis Potosí, México entre la empresa Minera San Xavier y el Frente Amplio Opositor (FAO a la misma, aplicamos el método etnográfico con el objetivo de describir las estructuras locales de mediación política y analizar sus prácticas y racionalidad. Intentamos demostrar así la importancia de los factores políticos locales en las vinculaciones entre estado, empresa y población.Este trabalho indaga nas instâncias de mediação que intervêm em processos econômicos de grande escala e sua posta em prática local. Baseando-nos no conflito no Cerro de San Pedro (San Luis Potosí, México entre a empresa Minera San Xavier e a Frente Amplio Opositor (FAO aplicamos o método etnográfico pra descrever as estruturas de mediação política locais e analisar suas práticas e racionalidade. Tenta-se demonstrar assim a importância dos fatores políticos locais nas vinculações entre estado, empresa e população.This paper investigates in instances of mediation involved in large-scale economic processes and local implementation. Analyzing the conflict in Cerro de San Pedro (San Luis Potosí, México among San Xavier mining company and the Frente Amplio Opositor (FAO, it applies an ethnographic approach to describe the local structures of political mediation and its practices and rationality. The work shows the relevance of local factors in the relationships between State, company and people.

Deterministic Safety Technology for RBMK Reactors

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F. D'Auria

2008-01-01

The paper summarizes the activities performed at NIKIET in Moscow and at University of Pisa (UNIPI in Pisa. A top-down approach is pursued in structuring the executive summary that includes the following sections: (i the safety needed for the RBMK NPP, (ii the roadmap, (iii\tthe adopted computational tools, (iv\tkey findings, (v\tEmphasis is given to the multiple pressure tube rupture (MPTR issue and the individual channel monitoring (ICM proposal.

Concomitant Appearance of Pisa Syndrome and Striatal Hand in Parkinson’s Disease

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Sanjay Pandey

2011-10-01

Full Text Available Pisa syndrome is (PS usually seen in patients receiving antipsychotic drugs and characterised by lateral flexion of trunk and axial dystonia. It is believed that antipsychotic drugs lead to dopamine blockage causing PS. We describe a Parkinson’s disease patient who was doing well with levodopa/carbidopa for 3 years and developed lateral flexion of trunk. His abnormal posture used to completely improve upon lying down position. He also had striatal hand deformity suggestive of focal dystonia.

75 FR 38412 - Safety Zone; San Diego POPS Fireworks, San Diego, CA

Science.gov (United States)

2010-07-02

...-AA00 Safety Zone; San Diego POPS Fireworks, San Diego, CA AGENCY: Coast Guard, DHS. ACTION: Temporary... waters of San Diego Bay in support of the San Diego POPS Fireworks. This safety zone is necessary to... San Diego POPS Fireworks, which will include fireworks presentations conducted from a barge in San...

The Ability-Track Glass Ceiling of Israeli Schooling: Lessons from a Comparative Analysis of Israeli and Australian PISA 2012 Data

Science.gov (United States)

Razer, Michal; Mittelberg, David; Ayalon, Snait

2018-01-01

Israeli students ranked in the bottom third of the countries surveyed by PISA 2012 in mathematical literacy, while the gap between the highest and lowest scores was the second largest in the OECD. This paper explores which variables led to disparities in mathematical literacy between different socioeconomic levels and between Israeli Arabs and…

PISA 2003 Australia: ICT Use Familiarity at School and Home. ACER Research Monograph Number 62

Science.gov (United States)

Thomson, Sue; De Bortoli, Lisa

2007-01-01

As countries continue to invest in information and communication technologies (ICT) and they become even more common in the workplace, there is an increasing demand for schools to produce technologically literate students. This report presents results from the "Programme for International Student Assessment" (PISA) 2003, and examines how…

Funcionalidad y grado de dependencia en los adultos mayores institucionalizados en centros de bienestar

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Elveny Laguado Jaimes

Full Text Available RESUMEN Introducción: La funcionalidad en el adulto mayor constituye un eje principal para los programas orientados a fortalecer el envejecimiento activo; ante el incremento de este grupo poblacional, las enfermedades como factor que limita la capacidad física, mental y social requieren acciones de control que disminuyan la dependencia que contribuye a un deterioro mayor. Objetivo: Determinar la funcionalidad y grado de dependencia en el adulto mayor institucionalizado como información básica para el diseño de un programa de intervención específica. Metodología: estudio descriptivo retrospectivo con una muestra de 60 adultos mayores institucionalizados y seleccionados por muestreo no probabilístico. Resultados: predomina el rango de edad de 75-84 años, un 26,66% de 60 adultos mayores y el género masculino con mayor frecuencia (53,33%. Por lo que respecta a la escolaridad, el 53,3% estudiaron primaria. Contacto familiar con la familia, el 70%; tiempo de institucionalización de los adultos mayores, el mayor tiempo (55% de 1 a 5 años. Predominan los problemas cardiovasculares en el 34% de los adultos mayores. Valoración funcional: predomina el género masculino con dependencia leve (26,66% y como independiente un 25% del género femenino. La valoración del grado de autonomía en el género masculino evidencia un grado de autonomía 1, con un 30% con respecto al género femenino, que tiene un grado de autonomía 3, con el 16,66%, sin significación estadística. Conclusiones: Se observa el predominio del género masculino en los adultos mayores institucionalizados y con dependencia leve, y al contrario en las mujeres, donde la frecuencia de independencia es mayor. En la autonomía predomina un grado mayor en los hombres que en las mujeres.

Geologic Investigation of a Potential Site for a Next-Generation Reactor Neutrino Oscillation Experiment -- Diablo Canyon, San Luis Obispo County, CA

International Nuclear Information System (INIS)

Onishi, Celia Tiemi; Dobson, Patrick; Nakagawa, Seiji; Glaser, Steven; Galic, Dom

2004-01-01

This report provides information on the geology and selected physical and mechanical properties of surface rocks collected at Diablo Canyon, San Luis Obispo County, California as part of the design and engineering studies towards a future reactor neutrino oscillation experiment. The main objective of this neutrino project is to study the process of neutrino flavor transformation or neutrino oscillation by measuring neutrinos produced in the fission reactions of a nuclear power plant. Diablo Canyon was selected as a candidate site because it allows the detectors to be situated underground in a tunnel close to the source of neutrinos (i.e., at a distance of several hundred meters from the nuclear power plant) while having suitable topography for shielding against cosmic rays. The detectors have to be located underground to minimize the cosmic ray-related background noise that can mimic the signal of reactor neutrino interactions in the detector. Three Pliocene-Miocene marine sedimentary units dominate the geology of Diablo Canyon: the Pismo Formation, the Monterey Formation, and the Obispo Formation. The area is tectonically active, located east of the active Hosgri Fault and in the southern limb of the northwest trending Pismo Syncline. Most of the potential tunnel for the neutrino detector lies within the Obispo Formation. Review of previous geologic studies, observations from a field visit, and selected physical and mechanical properties of rock samples collected from the site provided baseline geological information used in developing a preliminary estimate for tunneling construction cost. Gamma-ray spectrometric results indicate low levels of radioactivity for uranium, thorium, and potassium. Grain density, bulk density, and porosity values for these rock samples range from 2.37 to 2.86 g/cc, 1.41 to 2.57 g/cc, and 1.94 to 68.5 percent respectively. Point load, unconfined compressive strength, and ultrasonic velocity tests were conducted to determine rock

Geologic Investigation of a Potential Site for a Next-Generation Reactor Neutrino Oscillation Experiment -- Diablo Canyon, San Luis Obispo County, CA

International Nuclear Information System (INIS)

Onishi, Celia Tiemi; Dobson, Patrick; Nakagawa, Seiji; Glaser, Steven; Galic, Dom

2004-01-01

This report provides information on the geology and selected physical and mechanical properties of surface rocks collected at Diablo Canyon, San Luis Obispo County, California as part of the design and engineering studies towards a future reactor neutrino oscillation experiment. The main objective of this neutrino project is to study the process of neutrino flavor transformation--or neutrino oscillation--by measuring neutrinos produced in the fission reactions of a nuclear power plant. Diablo Canyon was selected as a candidate site because it allows the detectors to be situated underground in a tunnel close to the source of neutrinos (i.e., at a distance of several hundred meters from the nuclear power plant) while having suitable topography for shielding against cosmic rays. The detectors have to be located underground to minimize the cosmic ray-related background noise that can mimic the signal of reactor neutrino interactions in the detector. Three Pliocene-Miocene marine sedimentary units dominate the geology of Diablo Canyon: the Pismo Formation, the Monterey Formation, and the Obispo Formation. The area is tectonically active, located east of the active Hosgri Fault and in the southern limb of the northwest trending Pismo Syncline. Most of the potential tunnel for the neutrino detector lies within the Obispo Formation. Review of previous geologic studies, observations from a field visit, and selected physical and mechanical properties of rock samples collected from the site provided baseline geological information used in developing a preliminary estimate for tunneling construction cost. Gamma-ray spectrometric results indicate low levels of radioactivity for uranium, thorium, and potassium. Grain density, bulk density, and porosity values for these rock samples range from 2.37 to 2.86 g/cc, 1.41 to 2.57 g/cc, and 1.94 to 68.5% respectively. Point load, unconfined compressive strength, and ultrasonic velocity tests were conducted to determine rock mechanical

RICOMPOSIZIONE VIRTUALE DEL TABERNACOLO DI ISAIA DA PISA PER LA CHIESA DELLA SS. TRINITÀ DI VITERBO

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Dante Abate

2012-04-01

Full Text Available

Questo progetto ha preso spunto da uno studio condotto da Giusy Zevolini e pubblicato nel 2003 sulla Rivista dell’Istituto Nazionale di Archeologia e Storia dell’Arte. Nell’articolo la studiosa proponeva un’ipotesi di ricomposizione di due opere scultoree in marmo, entrambe eseguite durante il XV secolo, una delle quali sicuramente dall’artista toscano Isaia da Pisa. Le due parti, in origine probabilmente inserite in un unico complesso scultoreo monumentale, all’interno della chiesa agostiniana della SS. Trinità di Viterbo, oggi sono conservate in due siti distinti del capoluogo del territorio della Tuscia.

Virtual Reconstruction of the Tabernacolo of Isaia da Pisa for the Church of SS. Trinità in Viterbo

This study is based upon a characteristic, Art History paper, published in 2003. Specifically it suggests a reconstruction hypotesis concerning two marble objects, created in the XV Century, which were supposed to belong to each other, in a monumental complex, inside the Augustinian Church of the SS. Trinità in Viterbo (Italy. In the article the iconography was rendered by simply stitching pictures together, losing the objects proportions, without any care given to the likely missing parts, and of course showing the image in 2D. Despite scholars mostly agreeing that the two marble artefacts were made by the same artist (Isaiada Pisa and that both belong to the same church, they are still notsure if the pieces are a unique structure. The virtual re-composition helps to enhance the visual perception of the whole construction, which is now available just in 2D flat images, and to understand how it originally would have looked. The two objects, today placed in different locations in the city of Viterbo, studied in this paper are: a marble tabernacle with Angels and Christ; a marble tympanum with a blessing by Christ. Both sculptures were acquired witha triangulation laser scanner in two different

Production and use of {sup 18}F by TRIGA nuclear reactor: a first report

Energy Technology Data Exchange (ETDEWEB)

Burgio, N.; Ciavola, C.; Festinesi, A.; Capannesi, G. [ENEA, Centro Ricerche Casaccia, Rome (Italy). Dipt. Innovazione

1999-02-01

The irradiation and radiochemical facilities at public research centre can contribute to the start up of the regional PET centre. In particular, the TRIGA reactor of Casaccia Research Centre could produce a sufficient amount of {sup 18}F to start up a PET centre and successively integrated the cyclotron production. This report establishes, in the light of the preliminary experimental works, a guideline to the reactor`s production and extraction of {sup 18}F in a convenient form for the synthesis of the most representative PET radiopharmaceutical: {sup 18}F-FDG. [Italiano] Le facilities di irraggiamento e i laboratori Radiochimici dei Centri Statali di Ricerca possono contribuire allo sviluppo di centri regionali PET (Tomografia ed Emissione Positronica). In particolare, il reattore TRIGA del Centro Ricerca Casaccia potrebbe produrre un quantitativo di {sup 18}F sufficiente alle attivita` formative propedeutiche al centro PET che, successivamente sarebbe in grado di avviare una propria produzione da ciclotrone. Questo rapporto stabilisce le linee guida sperimentali per la produzione del {sup 18}F da reattore nucleare e la sua successiva estrazione in una forma conveniente per la sintesi del piu` rappresentativo dei radiofarmaci PET: il {sup 18}F-FDG.

Funcionamiento diferencial del item en la evaluación internacional PISA. Detección y comprensión. [Differential Item Functioning in the PISA Project: Detection and Understanding

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Paula Elosua

2006-08-01

Full Text Available This report analyses the differential item functioning (DIF in the Programme for Indicators of Student Achievement PISA2000. The items studied are coming from the Reading Comprehension Test. We analyzed the released items from this year because we wanted to join the detection of DIF and its understanding. The reference group is the sample of United Kingdom and the focal group is the Spanish sample. The procedures of detection are Mantel-Haenszel, Logistic Regression and the standardized mean difference, and their extensions for polytomous items. Two items were flagged and the post-hoc analysis didn’t explain the causes of DIF entirely. Este trabajo analiza el funcionamiento diferencial del ítem (FDI de la prueba de comprensión lectora de la evaluación PISA2000 entre la muestras del Reino Unido y España. Se estudian los ítems liberados con el fin de aunar las fases de detección del FDI con la comprensión de sus causas. En la fase de detección se comparan los resultados de los procedimientos Mantel-Haenszel, Regresión Logística y Medias Estandarizadas en sus versiones para ítems dicotómicos y politómicos. Los resultados muestran que dos ítems presentan funcionamiento diferencial aunque el estudio post-hoc llevado a cabo sobre su contenido no ha podido precisar sus causas.

A case for historic joint rupture of the San Andreas and San Jacinto faults

OpenAIRE

Lozos, Julian C.

2016-01-01

The San Andreas fault is considered to be the primary plate boundary fault in southern California and the most likely fault to produce a major earthquake. I use dynamic rupture modeling to show that the San Jacinto fault is capable of rupturing along with the San Andreas in a single earthquake, and interpret these results along with existing paleoseismic data and historic damage reports to suggest that this has likely occurred in the historic past. In particular, I find that paleoseismic data...

School Autonomy and Accountability: Are They Related to Student Performance? PISA in Focus. No. 9

Science.gov (United States)

OECD Publishing (NJ1), 2011

2011-01-01

In recent years, many schools have grown into more autonomous organisations and have become more accountable to students, parents and the public at large for their outcomes. PISA results suggest that, when autonomy and accountability are intelligently combined, they tend to be associated with better student performance. In countries where schools…

Realización de un repositorio de Tesis doctorales y Trabajos Fin de Grado con DRUPAL

OpenAIRE

Orenes Cayuelas, Tomás

2012-01-01

Trabajo fin de grado que pretende la creación de un repositorio de tesis doctorales y trabajos fin de grado para la facultad de Comunicación de la universidad de Murcia. Existe el objetivo a su vez de observar los problemas que puedan surgir al crear el repositorio con un gestor de contenidos cuyo propósito final no es este. Pa...

Comparing the Similarities and Differences of PISA 2003 and TIMSS. OECD Education Working Papers, No. 32

Science.gov (United States)

Wu, Margaret

2010-01-01

This paper makes an in-depth comparison of the PISA (OECD) and TIMSS (IEA) mathematics assessments conducted in 2003. First, a comparison of survey methodologies is presented, followed by an examination of the mathematics frameworks in the two studies. The methodologies and the frameworks in the two studies form the basis for providing…

PISA Y LA EVALUACIÓN. ESPEJO O ALIMENTO —NOTAS AL MARGEN—

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Ramiro Fernández Mayo

2010-05-01

Full Text Available From the 23rd to the 26th of November, it took place in La Palma the International Symposium PISA under Examination -a change in knowledge, a change in tests and a change in schools-. The author, who took part in the symposium, describes and extracts conclusions from the long and fruitful talks among the most credited specialists who came from all over the world and attended the symposium by courtesy of CESE -Comparative Education Society in Europe- and its Chairman, Mr Miguel A. Pereyra, a La Palma native-born citizen.

Reading literacy as a measure of the quality of education: Estimates based on PISA 2009 data

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Pavlović-Babić Dragica

2010-01-01

Full Text Available The definition of reading literacy in the PISA study, similar to other international studies of reading, emphasizes the importance of reading for active participation in society, thereby promoting the ability of students to critically analyze information and use it for different purposes. The study examined the level of reading literacy in fifteen-year-old students in different countries, whether there was progress compared to previous cycles of testing, the development of the individual literacy components, and the distribution of students by levels of reading literacy. The sample included fifteen-year-old students, regardless of the grade they had attended at the time of testing. The study was conducted in 190 schools, with the total of 5,523 students tested. The data show that the average achievement of students in Serbia in the domain of reading literacy is still below average compared to the achievement of students from OECD countries, but the results were significantly higher when compared to 2006. The most conspicuous change between two cycles of testing occurred at lower achieving levels of reading literacy, which indicates that the dominant way of teaching in schools is through traditional lectures and oriented towards the adoption of academic knowledge. The progress achieved in the average score for reading literacy scale can be seen as a result of greater involvement and greater motivation of students and teachers, the more apparent support of officials in the PISA 2009 study than in 2006 study, as well as a result of substantial changes in general social context in which students were educated. .

Moss ciliated protozoa as bioindicators. A study on the urban area of Pisa (Italy); Protozoi ciliati del muschio come biondicatori. Uno studio nell'area urbana di Pisa

Energy Technology Data Exchange (ETDEWEB)

Verni, F.; Rosati, G. [Pisa Univ., Pisa (Italy). Dipt. di Etologia, Ecologia, Evoluzione

2000-07-01

Samples of moss were collected, every month for 7 months, from five zones of Pisa (S2, S3, S4, S5, S6) and a woody zone (S1) as control. For each sample the type and the number of the ciliate species as well as the number of individuals for each species were determined. Lead content was also measured. The data were statistically elaborated and compared. The diversity Shannon index (H) was calculated to determine the health state of ciliate communities. In any case an inverse correlation between H and the lead content was reported; the highest the H value, the lowest the lead content and vice versa. On the basis of the results here reported the use of Ciliates as biondicators appears suitable for the control of urban soil. An analysis like this appears advantageous as it is rather simple and cheap and allows to determine the possible variations in a real time. [Italian] Sono stati analizzati campioni di muschio prelevati, con cadenza mensile per 7 mesi, in 5 stazioni di Pisa (S2, S3, S4, S5, S6) e da una zona boscosa (S1), come controllo. Per ogni campione si e' proceduto all'identificazione dei Ciliati presenti, al conteggio delle specie e del numero di individui per specie, nonche' alla misurazione del piombo presente. I dati sono stati confrontati dopo elaborazione statistica. L'indice della diversita' di Shannon ha fornito informazioni sulla salute della comunita' dei Protozoi delle varie stazioni. In ogni caso risulta una correlazione inversa tra i valori dell'indice di Shannon e la quantita' di piombo: S5, la stazione piu' esposta al traffico, risulta quella piu' degradata. L'uso dei Ciliati come biondicatori risulta quindi appropriato e vantaggioso considerando che e' semplice, poco costoso e permette di valutare in tempi reali variazioni nell'ambiente.

Una lectura cuantitativa de los documentos de competencias de los nuevos grados de Derecho

OpenAIRE

Leví Orta, Genoveva; Ramos Méndez, Eduardo

2014-01-01

Los documentos de formulación de competencias de los grados constituyen una fuente valiosa para el análisis, valoración y comparación del perfil de formación que ofrecen actualmente las diferentes titulaciones. Este trabajo tiene como objetivo realizar una lectura cuantitativa, basada en las ideas del Análisis de Contenido, de los documentos de competencias del grado de Derecho de distintas universidades españolas. La metodología empleada tiene dos fases. En primer lugar, se identifica en el ...

The Theory of Conjuntos-T and the PISA Test

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Ricardo J. De Armas Costa

2018-01-01

Full Text Available In this article of documented reflection, some elements of a new theory are showed that study how the different agents (teachers, researchers, pedagogues, ... and institutions that are part of the educational system, configure environments for the development of the cognitive abilities of subjects. It is the theory of Conjuntos-T proposed by the authors of the article in mid-2012 to develop students' mathematical skills; the theory that can be generalized to the development of skills in other areas of knowledge. It also illustrates, by way of example, how it can be used to develop basic contemporary skills demanded by modern economies in subjects and that is monitored in several countries by programs such as the PISA from OECD.

Cementerio San Camilo de Pereira. Representación visual y material del diseño, las artes y la arquitectura; desde los primeros años del siglo XX, hasta la década del ochenta

OpenAIRE

López Morales, Alfonso Javier

2015-01-01

Esta tesis de grado es producto de la investigación realizada por el autor entre los años 2011 a 2015, enmarcada dentro de los estudios de la Maestría en Historia de la Universidad Tecnológica de Pereira, cuyo objetivo principal fue demostrar en qué momento el Cementerio San Camilo de Pereira, se convierte en representación visual y material del diseño, las artes y la arquitectura, desde los primeros años del siglo XX, década de los treinta hasta la década de los ochenta. El corpus documental...

Las habilidades del pensamiento y el aprendizaje significativo en matemática de escolares de quinto grado en Costa Rica

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Natalia Araya Ramírez

2014-05-01

Full Text Available Este es un artículo en el cual se analizó cómo las habilidades de pensamiento de la observación, la inducción, el razonamiento hipotético-deductivo y la abstracción en la resolución de problemas, se presentan y potencian en los escolares de quinto grado, y cómo impactan en el aprendizaje al ser estimuladas durante el proceso de mediación pedagógica, en una escuela pública de la Dirección Regional de San José, circuito 02, en 2012. La metodología para recolectar la información consistió en: aplicar un pretest y un postest a 2 grupos de quinto grado (uno era el grupo control y el otro, el experimental, la muestra total fue de 60 estudiantes. Los test contaban con ejercicios para evaluar los procesos que intervienen en las habilidades del pensamiento investigadas; luego de aplicar el pretest al grupo experimental, se administró un plan institucional didáctico inteligente en matemática, con un enfoque constructivista; asimismo se sistematizaron los logros de los discentes en un diario de campo, y en una hoja de observación se anotaron los roles del educando y el docente, mientras se desarrollaba la lección. Finalmente, se entrevistó a una docente de quinto grado del grupo control, que imparte la asignatura de matemática. Los resultados obtenidos reflejaron que, si los procesos que involucran las habilidades del pensamiento son potenciados, el educando adquiere conocimientos y habilidades cada vez más complejas, que le permitan tener conciencia de cómo aprende. Se concluye que es necesario establecer en el aprendizaje de la matemática, un programa gradual para potenciar las habilidades de pensamiento por nivel escolar, respetando la madurez y el nivel cognitivo de los educandos. This article discusses how thinking skills of observation, induction, hypothetical-deductive reasoning and abstraction in solving problems arise and strengthened in fifth grade students and how the learning process is impacted when they are

EFECTO DEL GRADO DE MADUREZ Y LAS CONDICIONES DE ALMACENAMIENTO SOBRE LAS CARACTERÍSTICAS FISICOQUÍMICAS DE LA PAPAYA HÍBRIDO POCOCÍ

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Gerardina Umaña

2011-01-01

Full Text Available Se cosechó en Cariari (Guápiles, papaya Híbrido Pococí con 4 grados de maduración, con el objetivo de conocer cambios en las características físico-químicas que ocurren en la fruta bajo 2 condiciones de almacenamiento: 1 22°C y 85% humedad relativa (temperatura ambiente y 2 14°C y 95% humedad relativa, durante 14 días, seguidos de 9 días a 22°C y 85% humedad relativa. Los valores de la tasa respiratoria al inicio del almacenamiento a temperatura ambiente fueron bajos (6,3-13,3 ml.kg-1.h-1 de CO2, con importante alza entre el día 3 y 5, sin encontrarse diferencias significativas entre tratamientos a partir del día 7. Los frutos cosechados con grado 3, alcanzaron al menos un 75% de amarillo en el día 7, mientras que frutos de grado 1, en el día 9. A partir del día 5, no se presentaron diferencias en firmeza de cáscara entre los grados 1, 2 y 3. Se registraron valores de firmeza en pulpa menores a 20 N (relacionados con madurez de consumo, en los días 7 (grado 2 y grado 3 y 9 (grado 1. Después de salir del almacenamiento a 14°C, la respiración de los grados 1, 2 y 3 fue estadísticamente igual, con aumento importante en el día 5 del almacenamiento a temperatura ambiente. Se observó un incremento rápido en el porcentaje de amarillo entre los días 3 y 7 hasta alcanzar, todos los grados, porcentajes superiores al 75% en el día 7. A la salida del almacenamiento en frío, se encontró una pérdida importante de firmeza de la cáscara hasta 83% y de la pulpa hasta 90%. Los grados brix al momento de cosecha estuvieron comprendidos entre 7,9 y 11,3, con poca variación durante el almacenamiento, situación parecida a lo que se presentó con la acidez titulable.

Competencia lectora: Factores clave de los países destacados en PISA y postura de la educación adventista

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Belinda Maquera Chambi

2014-05-01

Full Text Available This paper is a theoretical review and seeks to identify the key factors in the success in reading literacy by leading countries in PISA also discloses fundamental aspects of Adventist educational model and its position on reading. This study was based on reports of the results of the PISA assessments: 2000-2012, analysts educational articles, texts of the Spirit of Prophecy, as well as texts of Adventist Education. Data were authenticated by subjecting them to external and internal criticism. It is concluded that the key factors for success in reading literacy among others: convenient budget, equipment and adequate infrastructure, quality of teachers, increase in hours in core subjects, appropriate textbooks, application of cognitive, sociolinguistic approach to teach communication and parental expectations.

Metas de logro y niveles de satisfacción hacia el grado de docente en infantil y primaria

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Virginia Viciana-Garófano

2017-08-01

Full Text Available La presente investigación tiene como objetivo principal conocer el nivel de satisfacción y de metas de logro del estudiantado matriculado en el séptimo semestre del grado de docente en infantil y primaria. El presente estudio empírico relaciona aspectos de género, especialidad, satisfacción del alumnado hacia el grado y metas de logro de estos sobre un total de 293 participantes de último curso de grado, procedentes de dos centros universitarios ubicados en la ciudad de Granada (España, la Facultad de Ciencias de la Educación-FCCE (pública y La Inmaculada-Escuela Universitaria (privada. Se utilizó un diseño de carácter cuantitativo descriptivo y de tipo transversal, donde se desarrolló un estudio relacional para analizar el grado de dependencia entre las metas de logro, el grado de satisfacción, el género y la titulación de los sujetos.  Los principales resultados obtenidos en este estudio indican que el estudiantado matriculado en el séptimo semestre del grado analizado se encuentra satisfecho con su titulación, destaca la realización y desempeño de trabajos en equipo y la calidad del personal docente, la atención que les prestan y la puntualidad y escaso absentismo hacia las clases. Los varones buscan más el rendimiento, la competitividad y la consecución de resultados; frente a féminas, que buscan la aproximación a la tarea, realizándola con la mayor competencia.

A Multilevel Multidimensional Item Response Theory Model to Address the Role of Response Style on Measurement of Attitudes in PISA 2006

Science.gov (United States)

Lu, Yi

2012-01-01

Cross-national comparisons of responses to survey items are often affected by response style, particularly extreme response style (ERS). ERS varies across cultures, and has the potential to bias inferences in cross-national comparisons. For example, in both PISA and TIMSS assessments, it has been documented that when examined within countries,…

Compact High Resolution SANS using very cold neutrons (VCN-SANS)

International Nuclear Information System (INIS)

Kennedy, S.; Yamada, M.; Iwashita, Y.; Geltenbort, P.; Bleuel, M.; Shimizu, H.

2011-01-01

SANS (Small Angle Neutron Scattering) is a popular method for elucidation of nano-scale structures. However science continually challenges SANS for higher performance, prompting exploration of ever-more exotic and expensive technologies. We propose a compact high resolution SANS, using very cold neutrons, magnetic focusing lens and a wide-angle spherical detector. This system will compete with modern 40 m pinhole SANS in one tenth of the length, matching minimum Q, Q-resolution and dynamic range. It will also probe dynamics using the MIEZE method. Our prototype lens (a rotating permanent-magnet sextupole), focuses a pulsed neutron beam over 3-5 nm wavelength and has measured SANS from micelles and polymer blends. (authors)

The development of PISA reading competence in secondary education

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Jovanović Vitomir

2016-01-01

Full Text Available The aim of the paper is to provide a contribution to answering the question about the most important predictors of progress in reading competence achieved by students after two years of secondary education, as well as whether the set of predictors of progress is different from the set of predictors of achievement in reading literacy test and school achievement measured via school grades. The students from the sample for the PISA 2009 study conducted in Serbia were tested again after two years by the PISA reading literacy test, quasi longitudinally, measuring achievement correlates at another time point. The realised sample included 20 secondary schools and 446 students. We selected fourteen predictors that, according to the studies so far, proved to have highest correlations with school achievement. The results have shown that the predictors explain only 13% of variance of the progress in reading literacy test (R=.36; R2=.13; F =12.97; p<.05 although they explain 49% of variance of achievement at it (R=.70; R2 197,18 =.49; F257,18 =12.97; p<.001. This opens up the issue of the importance of early learning for progress in reading competence. In both the first and the second analysis, the strongest predictor was the autonomous form of extrinsic motivation which, according to the self-determination theory, speaks about the importance of learning for future life and career. A somewhat different set of used predictors predicted school achievement measured via school grades. Using metacognitive strategies is not an important predictor of school achievement while it is the predictor of achievement in the reading literacy test. Together with the findings pointing towards the lower than expected correlation between achievement in reading literacy and school achievement (r=.39; p<0.001 and generally low progress of Serbia at this test compared to the estimated progress of the OECD countries, these results give grounds for the conclusion that our

DEVELOPING PISA-LIKE MATHEMATICS TASK WITH INDONESIA NATURAL AND CULTURAL HERITAGE AS CONTEXT TO ASSESS STUDENTS MATHEMATICAL LITERACY

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Wuli Oktiningrum

2016-01-01

Full Text Available The aim of this research is produce a set of PISA-like mathematics task with Indonesia natural and cultural heritage as context which are valid, practical, to assess students’ mathematics literacy. This is design research using type of development research with formative evaluation. A total of 20 students of SMP Negeri 1 Palembang. Beside, 10 experts were involved in this research to assess the feasibility of prototyping in terms of content, context and language. Walk through, documentation, questionnaire, test result, and interviews are way to collect the data. This research produced a PISA-like math task is as many 12 category of content, context, and process valid, practical and has potential effect. The validity came empirical evaluation of validation and reliability testing during small group. From the field test, we conclude that the tasks also potentially effect to the students’ mathematical literacy in activating the indicators of each Fundamental Mathematical Capabilities.

PISA Sonuçları Açısından Ülkelerin Eğitimli Olmayan Nüfus Yapısının Analizi: Uluslararası Bir Perspektif An Analysis Of Countries’ Uneducated Population In Terms Of PISA Results: An International Perspective

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İlknur MAYA

2013-09-01

Full Text Available Education is an important factor in a country’s having asustainable international competition power as well as in that country’seconomic expansion and development. Research studies conducted inseveral countries support the fact that education in specific anddeveloping the human capital in general are significant factors inaccounting for the changes in countries’ expansion rates and in incomeper person. Therefore, it is important that each country should invest ineducation, attain quality in education, and be aware of educationalproblems. Children remaining out of the school, and illiterate youngand adult population are the important educational problems for manydeveloping countries. Besides, the educational level of society influencesthe achievement in international examinations in the field of educationas well as the development of that country. Hence, it is evident thatchildren out of the school, and illiterate young and adult population arethe important indicators included in international policy documents.This study aims at analysing countries’ uneducated children, youngand adult population comparatively in terms of PISA (Programme forInternational Student Assessment results. To do this, the researchemploys the method of document analysis. The research population wascomposed of 65 countries 34 of which were OECD members taking partin PISA (2009 examination. The research sample was composed of 20countries, 10 of which attained the highest and 10 of which attained thelowest achievement in PISA. The research data come from suchinstitutes as OECD (2012, PISA (2009, and UIS (2011 since access tothe latest statistical data is required. Owing to the fact that thedocuments used in this research came from official statistics, the datamay be said to have high validity and reliability. In consequence, thepopulation of children remaining out of the school at the primary andsecondary education stages is lower in counties having the

Design requirements, operation and maintenance of gas-cooled reactors

International Nuclear Information System (INIS)

1989-06-01

At the invitation of the Government of the USA the Technical Committee Meeting on Design Requirements, Operation and Maintenance of Gas-Cooled Reactors, was held in San Diego on September 21-23, 1988, in tandem with the GCRA Conference. Both meetings attracted a large contingent of foreign participants. Approximately 100 delegates from 18 different countries participated in the Technical Committee meeting. The meeting was divided into three sessions: Gas-cooled reactor user requirement (8 papers); Gas-cooled reactor improvements to facilitate operation and maintenance (10 papers) and Safety, environmental impacts and waste disposal (5 papers). A separate abstract was prepared for each of these 23 papers. Refs, figs and tabs

Las asignaturas de Álgebra Lineal y Geometría Lineal en los Grados en Matemáticas y Física de la Universidad de Alicante

OpenAIRE

Alonso-González, Clementa; Climent, Joan-Josep; Fajardo Gómez, María Dolores; Rodríguez Álvarez, Margarita; Soler Escrivà, Xaro

2017-01-01

Esta red de investigación en docencia es una continuación natural de la Red 3577 constituida en el curso académico 2015-2016 y cuyo objetivo principal era analizar el desarrollo de las asignaturas Álgebra Lineal I, Álgebra Lineal II y Geometría Lineal en el Grado en Matemáticas de la Facultad de Ciencias de la Universidad de Alicante. Durante este curso académico 2016-2017 también ha comenzado su andadura en la Universidad de Alicante el Grado en Física. Aunque este grado es aún muy joven, ya...

Small-angle neutron scattering instrument of Institute for Solid State Physics, the Univeristy of Tokyo (SANS-U) and its application to biology

Energy Technology Data Exchange (ETDEWEB)

Ito, Yuji; Imai, Masayuki; Takahashi, Shiro [Univ. of Tokyo, Tokai Naka Ibaraki (Japan)

1994-12-31

A small-angle neutron spectrometer (SANS-U) suitable for the study of mesoscopic structure in the field of polymer chemistry and biology, has been constructed at the guide hall of JRR-3M reactor at the Japan Atomic Energy Research Institute. The instrument is 32m long and utilizes a mechanical velocity selector and pinhole collimation to provide a continuous beam with variable wavelength in the range from 5 to 10{Angstrom}. The neutron detector is a 65 x 65cm{sup 2} 2D position sensitive proportional counter. The practical Q range of SANS-U is 0.0008 to 0.45{Angstrom}{sup -1}. The design, characteristics and performance of SANS-U are described with some biological studies using SANS-U.

Estudio y análisis de la calidad de la educación secundaria en España desde una perspectiva geomática con herramientas de cartografía y SIG.

OpenAIRE

Aragón Velasco, Aurelio

2015-01-01

En el presente Trabajo Fin de Grado se realiza un estudio y análisis geomático de la calidad de la educación secundaria mediante procedimientos de Cartografía y SIG, con datos espaciales y temáticos de fuentes oficiales que garantizan la precisión y certeza necesaria para la obtención de unas conclusiones objetivas y de calidad. Dicha calidad de la educación secundaria será estudiada bajo el marco de referencia de los estudios dek informe PISA (por sus siglas en inglés: Programme for Inter...

Pisa Question and Reasoning Skill

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Ersoy Esen

2017-01-01

Full Text Available The objective of the study is to determine the level of the reasoning skills of the secondary school students. This research has been conducted during the academic year of 2015-2016 with the participation of 51 students in total, from a province in the Black Sea region of Turkey by using random sampling method. Case study method has been used in this study, since it explains an existing situation. In this study, content analysis from the qualitative research methods was carried out. In order to ensure the validity of the scope, agreement percentage formula was used and expert opinions were sought.The problem named Holiday from the Chapter 1 of the normal units in Problem Solving Questions from PISA (Program for International Student Assessments [35] are used as the data collection tool for the study. The problem named Holiday consists of two questions. Applied problems were evaluated according to the mathematical reasoning stages of TIMSS (2003. The findings suggest that the students use proportional reasoning while solving the problems and use the geometric shapes to facilitate the solution of the problem. When they come across problems related to each other, it is observed that they create connections between the problems based on the results of the previous problem. In conclusion, the students perform crosscheck to ensure that their solutions to the problems are accurate.

33 CFR 165.754 - Safety Zone: San Juan Harbor, San Juan, PR.

Science.gov (United States)

2010-07-01

... 33 Navigation and Navigable Waters 2 2010-07-01 2010-07-01 false Safety Zone: San Juan Harbor, San Juan, PR. 165.754 Section 165.754 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND... Zone: San Juan Harbor, San Juan, PR. (a) Regulated area. A moving safety zone is established in the...

A quoi servent les enquêtes PISA ? Réflexions sur le cas de la Belgique francophone

OpenAIRE

Mangez, Eric; Cattonar, Branka

2011-01-01

Cette contribution examine la manière dont les enquêtes PISA ont été reçues et utilisées dans le contexte de la Belgique francophone. La structure de notre analyse est simple : il s’agit d’étudier la rencontre entre un instrument, dépositaire de certaines propriétés, et un contexte, marqué lui aussi par certaines particularités forgées au cours de l’histoire. Après avoir souligné les particularités historiques du contexte politique consociatif belge et la place relativement modeste qu’y occup...

75 FR 57080 - In the Matter of Aerotest Operations, Inc. (Aerotest Radiography and Research Reactor); Order...

Science.gov (United States)

2010-09-17

... NUCLEAR REGULATORY COMMISSION [NRC-2010-0178; Docket No. 50-228; License No. R-98] In the Matter of Aerotest Operations, Inc. (Aerotest Radiography and Research Reactor); Order Extending the... possession, use, and operation of the Aerotest Radiography and Research Reactor (ARRR) located in San Ramon...

75 FR 39985 - In the Matter of Aerotest Operations, Inc. (Aerotest Radiography and Research Reactor); Order...

Science.gov (United States)

2010-07-13

... NUCLEAR REGULATORY COMMISSION [NRC-2010-0178; Docket No. 50-228; License No. R-98] In the Matter of Aerotest Operations, Inc. (Aerotest Radiography and Research Reactor); Order Approving Indirect... of the Aerotest Radiography and Research Reactor (ARRR) located in San Ramon, California, under the...

Operating Experience with the BR-5 Reactor; Experience acquise aupres du reacteur BR-5; Opyt ehkspluatatsii reaktora BR-5; Experiencia practica con el reactor BR-5

Energy Technology Data Exchange (ETDEWEB)

Lejpunskij, A. I.; Kazachkovskij, O. D.; Pinkhasik, M. S.; Aristarkhov, N. N.; Karpov, A. V.; Larin, E. P.; Efimov, I. A.

1963-10-15

The paper discusses the carrying-out of repair and maintenance work on the radioactive liquid-metal circuit of the BR-5 fast neutron reactor. Attention is also given to problems of reactor operation after achievement of the planned 2% fuel burn-up with some disturbance of leak-tightness in individual fuel elements. An account is given of experience in discharging the active section, examining the condition and leak-tightness of the fuel elements, and decontaminating the equipment and piping of the first radioactive circuit after reaching 5% fuel burn-up. (author) [French] Dans ce memoire les auteurs decrivent l'execution des reparations et des travaux d'entretien dans le circuit radioactif liquide-metal du reacteur a neutrons rapides BR-5. Ils etudient egalement les problemes lies au fonctionnement du reacteur au taux de combustion de 2% prevu avec quelques defauts d'etancheite dans des elements combustibles particuliers. Ils decrivent le dechargementen zone active et examinent les conditions d'etancheite des elements combustibles. Ainsi que la decontamination de l'appareillage et des tuyauteries du premier circuit radioactif apres avoir atteint un taux de combustion de 5%. (author) [Spanish] En la memoria se examinan los problemas planteados por el mantenimiento del circuito radiactivo de metal liquido del reactor de neutrones rapidos BR-5. Se tratan cuestiones relacionadas con la explotacion del reactor una vez alcanzado el grado de combustion de 2%, previsto en el proyecto y luego de producirse ciertas alteraciones de la densidad de determinados elementos combustibles. Se describen la experiencia adquirida durante la descarga del cuerpo del reactor, las investigaciones del estado general y de la hermeticidad de los elementos combustibles y las operaciones de descontaminacion de la instalacion y de las tuberias del circuito radiactivo primario despues de alcanzado un grado de combustion de 5%. (author) [Russian] V doklade rassmatrivayutsya voprosy proizvodstva

Do Inequalities in Parents' Education Play an Important Role in PISA Students' Mathematics Achievement Test Score Disparities?

Science.gov (United States)

Martins, Lurdes; Veiga, Paula

2010-01-01

This paper measures and decomposes socioeconomic-related inequality in mathematics achievement in 15 European Union member states. Data is taken from the 2003 wave of the OECD Programme for International Student Assessment (PISA). There is socioeconomic-related inequality in mathematics achievement, favoring the higher socioeconomic groups in each…

An Exploration of Reasons for Shanghai's Success in the OECD Program for International Student Assessment (PISA) 2009

Science.gov (United States)

Minxuan, Zhang; Lingshuai, Kong

2012-01-01

The outstanding performance of Shanghai students in the 4th Programme for International Student Assessment (PISA 2009) gained widespread attention at home and abroad. In this paper, the authors attribute this outstanding performance to three traditional factors and six modern factors. The traditional factors are high parental expectations, belief…

FISCALIDAD DE LAS SOCIEDADES COOPERATIVAS DE SEGUNDO GRADO./SECOND DEGREE COOPERATIVES FROM A TAX POINT OF VIEW

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Emilio NAVARRO HERAS

2007-01-01

Full Text Available Este artículo trata de mostrar la especial tributación de las sociedades cooperativas de segundo grado, como instrumento de integración tradicionalmente utilizado por las sociedades cooperativas para emprender procesos de concentración. Centraremos el estudio de su fiscalidad en el Impuesto sobre Sociedades por las particularidades tributarias que presenta el mismo en este tipo societario. Respecto a este impuesto las sociedades cooperativas de segundo grado pueden optar por tributar como simples sociedades cooperativas, acogiéndose a la Ley 20/1990, de 19 de diciembre, sobre Régimen Fiscal de Cooperativas, o hacerlo como grupo cooperativo, amparándose en el régimen especial de tributación consolidada establecido para este tipo social. Al igual que las sociedades de primer grado éstas disfrutan de una serie de beneficios fiscales tanto en la imposición directa como en la indirecta, como consecuencia de la naturaleza social de las mismas./In this paper we show the special tax system of the second degree cooperatives, as a mean of integration used by them for concentration processes. We focus on the income tax for its legal peculiarities for this kind of firms. In relation to this same tax, second degree cooperatives can choose between to pay their taxes as simple cooperatives (Law 20/1990, December 19th or as cooperative groups (Consolidation taxation. As first degree cooperatives, these ones have some tax profits in direct and indirect taxation due to their social nature.

Análisis sobre el grado de conocimiento e identificación de los tarraconenses con la candidatura a los Juegos Mediterráneos de Tarragona en 2017

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Vicent Añó Sanz

2013-03-01

Full Text Available El objetivo de este estudio fue analizar la evolución entre los años 2009 y 2010 en el grado de conocimiento e identificación de los tarraconenses con la candidatura a los Juegos Mediterráneos de Tarragona en 2017. Se recogieron las opiniones de dos muestras de ciudadanos con un año de diferencia (N = 246 para 2009 y N = 307 para 2010. Los resultados mostraron una evolución positiva de un año a otro en aspectos como el conocimiento sobre lo que son los Juegos Mediterráneos, el grado de información recibida, el grado con el que se identifica la sociedad con este evento deportivo, el grado de dificultad percibida en la organización del mismo, el grado de preparación de la ciudad en servicios como la sanidad, los alojamientos y la restauración, el grado de coordinación entre las administraciones públicas o el trabajo realizado por la candidatura. No obstante, una gran parte de los ciudadanos no consideraban que la ciudad estuviese bastante o muy preparada en otras áreas como el transporte público o las instalaciones deportivas, observándose una evolución negativa entre los dos años en los accesos desde el exterior y en los servicios de limpieza y de seguridad. Los resultados de este estudio pueden ayudar a mejorar la implicación y participación de la ciudadanía en este tipo de acontecimientos deportivos.

Indicadores de depresión en niños de cuarto a sexto grado de primaria en la ciudad de Huancayo

OpenAIRE

Ávila Benito, Carlos; Espinoza Ventura, Juan Carlos

2016-01-01

Esta investigación tuvo como finalidad identificar en qué medida se presentan los indicadores de la depresión infantil en niños de 4° a 6° grado de primaria y observar las diferencias de la presencia de síntomas depresivos entre grados, sexos, tipos de familias y tipos de colegios en el contexto de la Provincia de Huancayo. La investigación fue de tipo cuantitativo, con un diseño no experimental de tipo transversal descriptivo; se aplicó el Cuestionario de Depresión Infantil (CDI) que mide el...

78 FR 19103 - Safety Zone; Spanish Navy School Ship San Sebastian El Cano Escort; Bahia de San Juan; San Juan, PR

Science.gov (United States)

2013-03-29

...-AA00 Safety Zone; Spanish Navy School Ship San Sebastian El Cano Escort; Bahia de San Juan; San Juan... temporary moving safety zone on the waters of Bahia de San Juan during the transit of the Spanish Navy... Channel entrance, and to protect the high ranking officials on board the Spanish Navy School Ship San...

Los doce trabajos de Hércules de Villena y la Fiorita de Guido da Pisa

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Paolo Cherchi

2002-12-01

Full Text Available This essay points out a general source for Enrique de Villena's Los doce trabajos de Hércules. The source is Guido da Pisa's Fiorita d'Italia, specifically a section of it which is entirely devoted to Hercules' labors. Villena draws historical and exegetical data from this source, and at times he does so verbatim, but most often he amplifies and manipulates these data with originality in order to pursue his moral and political goals.

International Semiotics: Item Difficulty and the Complexity of Science Item Illustrations in the PISA-2009 International Test Comparison

Science.gov (United States)

Solano-Flores, Guillermo; Wang, Chao; Shade, Chelsey

2016-01-01

We examined multimodality (the representation of information in multiple semiotic modes) in the context of international test comparisons. Using Program of International Student Assessment (PISA)-2009 data, we examined the correlation of the difficulty of science items and the complexity of their illustrations. We observed statistically…

Pre-Primary Education and Long-Term Education Performance: Evidence from Programme for International Student Assessment (PISA) Thailand

Science.gov (United States)

Pholphirul, Piriya

2017-01-01

Several research papers have assessed the long-term benefits of pre-primary education in terms of academic performance and labor market outcomes. This study analyzes data obtained from the Programme for International Student Assessment (PISA) to estimate the effects of preschool enrollment of Thai students on producing long-term benefits in their…

PERFECCIONISMO, AUTOPRESENTACIÓN PERFECCIONISTA, Y SÍNTOMAS DEPRESIVOS EN ADOLESCENTES PARAGUAYOS SEGÚN GÉNERO Y GRADO

Directory of Open Access Journals (Sweden)

M. Alexandra Vuyk

2015-01-01

Full Text Available Este estudio comparó dimensiones negativas del perfeccionismo, autopresentación perfeccionista, y síntomas depresivos según género y grado en adolescentes de habilidad intelectual por encima de la media de una escuela privada de Asunción, Paraguay. Instrum entos fueron el Child and Adolescent Perfectionism Scale (CAPS, Perfectionistic Self - Presentation Scale (PSPS - V, y el Inventario de Depresión de Beck - II (BDI - II. Un análisis de varianza multivariado halló diferencias significativas según género, pero no según grado ni en la interacción género X grado. Pruebas t post - hoc indicaron que las mujeres demostraron más síntomas depresivos, sin diferencias en perfeccionismo ni autopresentación perfeccionista.

Evaluación de tesis doctoral en la escuela de post grado de la UNA - Puno

OpenAIRE

Supo Condori, Felipe

2014-01-01

La investigación titulada "Evaluación de Tesis Doctoral en la Escuela de Post Grado de la Universidad Nacional del Altiplano de Puno" responde a la interrogante de carácter general ¿Cuál es el nivel de calidad de las tesis del Programa de Doctorado sustentadas durante los años 2009 al 2010 en la Escuela de Post Grado de la Universidad Nacional del Altiplano de Puno en relación a los aspectos académicos expresados en la aplicación de la rigurosidad epistemológica y metodológica de la investiga...

Design of a TOF-SANS instrument for the proposed long wavelength target station at the spallation neutron source

International Nuclear Information System (INIS)

Thiyagarajan, P.; Littrell, K.; Seeger, P.A.

2001-01-01

We have designed a versatile high-throughput SANS instrument [Broad Range Intense Multipurpose SANS (BRIMS)] for the proposed Long Wavelength Target Station at the SNS by using acceptance diagrams and the Los Alamos NISP Monte Carlo simulation package. This instrument has been fully optimized to take advantage of the 10 Hz source frequency (broad wavelength bandwidth) and the cold neutron spectrum from a tall coupled solid methane moderator (12 cm x 20 cm). BRIMS has been designed to produce data in a Q range spanning from 0.0025 to 0.7 A -1 in a single measurement by simultaneously using neutrons with wavelengths ranging from 1 to 14.5 A in a time of flight mode. A supermirror guide and bender assembly is employed to separate and redirect the useful portion of the neutron spectrum with λ>1 A, by 2.3deg away from the direct beam containing high energy neutrons and γ rays. The effects of various collimation choices on count rate, resolution and Q min have been characterized using spherical particle and delta function scatterers. The overall performance of BRIMS has been compared with that of the best existing reactor-based SANS instrument D22 at ILL. (author)

Processing the ITU vocabulary: revisions and adaptations to the Pisa syntactic-semantic parser

OpenAIRE

Peters, Carol; Federici, Stefano; Montemagni, Simonetta; Calzolari, Nicoletta

1993-01-01

The first version of the Pisa syntactic-semantic parser was described in detail in Deliverable 4, Section 2 and Appendices 2,3, and 4. The scope of this report is to discuss the testing of the parser on the sample set of vocabulary which has been selected from the ITU Corpus (see Deliverable 6.1) and to illustrate the revisions and extensions that are now being implemented. The report therefore concentrates on presenting analysis and extraction activities. We need to specify clearly all the k...

Using hierarchical linear models to test differences in Swedish results from OECD’s PISA 2003: Integrated and subject-specific science education

Directory of Open Access Journals (Sweden)

Maria Åström

2012-06-01

Full Text Available The possible effects of different organisations of the science curriculum in schools participating in PISA 2003 are tested with a hierarchical linear model (HLM of two levels. The analysis is based on science results. Swedish schools are free to choose how they organise the science curriculum. They may choose to work subject-specifically (with Biology, Chemistry and Physics, integrated (with Science or to mix these two. In this study, all three ways of organising science classes in compulsory school are present to some degree. None of the different ways of organising science education displayed statistically significant better student results in scientific literacy as measured in PISA 2003. The HLM model used variables of gender, country of birth, home language, preschool attendance, an economic, social and cultural index as well as the teaching organisation.

CONSTRUCCIÓN DE UN REACTOR DISCONTINUO PARA LA OBTENCIÓN DE BIODIESEL A PARTIR DEL ACEITE DE Ricinus communis

Directory of Open Access Journals (Sweden)

Yolimar Fernández

2014-01-01

Full Text Available Se construyó un reactor discontinuo para obtener biodiesel a partir de 5 litros de extracto obtenido de la semilla de Ricinus communis. El reactor es de acero inoxidable, con longitud de 29 cm; diámetro interno de 15,24 cm y fondo cónico de 20cm de largo, espesor de la pared de 0,2cm, resistencia tubular de 1000 W y motor de 110 volt. Se extrajo y se comparó con las normas respectivas las propiedades físicas y químicas del aceite crudo. Se realizaron pruebas preliminares de transesterificación del aceite catalizadas con NaOH para constatar la viabilidad de la reacción y definir las condiciones operacionales. El biodiesel obtenido fue caracterizado y comparado con referencias presentes en la literatura. Los resultaron mostraron que es posible obtener el biocombustible en el reactor discontinuo con un grado de conversión 88%; confirmando su aplicación en reacciones de transesterificación en medio básico.

180 tesis de grado extranjeras sobre política colombiana

Directory of Open Access Journals (Sweden)

Rodrigo Losada Lora

1979-06-01

Full Text Available La Fundación para la Educación Superior y el Desarrollo (FEDESARROLLO entregó a la Biblioteca Luis-Ángel Arango 180 copias de tesis de grado presentadas en universidades extranjeras. Las tesis tratan, en su totalidad o en parte sustancial, sobre temas de política colombiana, entendiendo esta en un sentido amplio (Gobierno, partidos, elecciones, militares, grupos de presión, etc..

Factores explicativos del rendimiento escolar en Latinoamérica con datos PISA 2009 // Factors Explaining School Performance in Latin America with PISA 2009 Data

Directory of Open Access Journals (Sweden)

Justo de Jorge-Moreno

2016-12-01

Full Text Available Este trabajo ha tenido como objetivo principal determinar el efecto país, tipo de centro (su titularidad, pública o privada y sus recursos sobre los resultados educativos de los alumnos del sistema de enseñanza latinoamericano del programa PISA 2009. Los resultados obtenidos aplicando un análisis multinivel revelan que las diferencias de rendimiento académico a favor de los centros privados son explicadas por la titularidad del centro dando respaldo empírico a favor de la hipótesis Coleman-Hoffer. Las características del entorno familiar del alumno y de los recursos de la escuela también tienen un fuerte poder explicativo. En relación a las primeras, los alumnos nativos en familias nucleares y con mayor nivel socioeconómico y recursos en el hogar obtienen mayores rendimientos que el resto de categorías. Este hecho es especialmente significativo a la hora de señalar algunos aspectos que el sistema educativo debería tener en cuenta a la hora de garantizar la igualdad de oportunidades educativas. En relación a las segundas, el tamaño de la escuela, el clima en el aula y los recursos disponibles en los centros tienen una fuerte influencia en el rendimiento académico. ------------------------------------ This work has as main objective to determine the effect country, type of institution (its ownership, public or private and their resources on educational outcomes for students of Latin-American education system from PISA 2009. The results obtained by applying a multilevel analysis reveal that differences in academic performance in favor of private schools are explained by the type of school providing empirical support for the hypothesis Coleman-Hoffer. The environment features student and school resources also have strong explanatory power. Regarding the former, native students in nuclear families with higher socioeconomic status and household resources get higher yields than other categories. This is especially significant in

76 FR 45693 - Safety Zone; San Diego POPS Fireworks, San Diego, CA

Science.gov (United States)

2011-08-01

...-AA00 Safety Zone; San Diego POPS Fireworks, San Diego, CA AGENCY: Coast Guard, DHS. ACTION: Temporary... San Diego Bay in support of the San Diego POPS Fireworks. This safety zone is necessary to provide for... of the waterway during scheduled fireworks events. Persons and vessels will be prohibited from...

透過PISA與TIMSS評比研究檢視西方與亞洲學生數學的相對強項 Using PISA and TIMSS Mathematics Assessments to Identify the Relative Strengths of Students in Western and Asian Countries

Directory of Open Access Journals (Sweden)

張立民 Margaret Wu

2011-03-01

Full Text Available Wu（2009）的研究曾將2003 年「國際學生能力評量計畫」（Programme for International Student Assessment, PISA）的數學表現，與「國際數學與科學教育成就趨勢調查」（Trends in International Mathematics and Science Study, TIMSS）八年級學生的數學表現做一比較，結果發現，西方國家在PISA 的表現大致上比在TIMSS的表現為佳。本研究則將TIMSS公開的題目分為兩組，一組與PISA 的架構相符，另一組則不相符。其中，TIMSS評比有很多幾何與代數的題目是屬於「純粹的數學」題（即未以真實生活情境作為背景的數學題），而這些題目並未出現在PISA 評比之中。本研究檢視六個國家在這兩組題目表現上的差異，藉此反映出西方與亞洲國家的相對強項與弱點，接著再將這些強項與弱點連結到PISA與TIMSS評比的內容上。有證據顯示，西方與亞洲國家在PISA 與TIMSS的差異表現可歸因於兩評比題目種類的不同。 A study was carried out that compared Programme for International Student Assessment (PISA 2003 Mathematics results with Trends in International Mathematics and Science Study (TIMSS 2003 Grade 8 Mathematics results (Wu, 2009. It was found that Western countries generally performed better in PISA than in TIMSS, and Eastern European and Asian countries generally performed better in TIMSS than in PISA. In this paper, TIMSS released items are divided into two sets: one that fits the PISA framework and one that does not. In particular, many geometry and algebra items in TIMSS are “inner mathematics” (mathematics without a real-life context, and such items do not appear in the PISA test. Differential performances of six countries on each set of items are examined. In this way, the relative strengths and weaknesses of Western and Asian countries are identified. These strengths and weaknesses are then linked back to the contents of the PISA and TIMSS

Academic Resilience: What Schools and Countries Do to Help Disadvantaged Students Succeed in PISA. OECD Education Working Papers, No. 167

Science.gov (United States)

Agasisti, Tommaso; Avvisati, Francesco; Borgonovi, Francesca; Longobardi, Sergio

2018-01-01

Resilience refers to the capacity of individuals to prosper despite encountering adverse circumstances. This paper defines academic resilience as the ability of 15-year-old students from disadvantaged backgrounds to perform at a certain level in the Programme for International Student Assessment (PISA) in reading, mathematics and science that…

The Influence of PISA Scores, Schooling and Social Factors on Pathways to and within Higher Education in Canada

Science.gov (United States)

Murdoch, Jake; Kamanzi, Pierre Canisius; Doray, Pierre

2011-01-01

In this article, we use data from the Canadian Youth in Transition Survey (YITS). This survey has followed longitudinally the Canadian Programme for International Student Assessment (PISA) students originally surveyed in 2000. The aim of this article is to look to what extent social factors (e.g. gender, parental education and socio-economic…

Los grados de asimilación económica del Estado de Guerrero, a fines del siglo XX /

OpenAIRE

García Castro, Neftalí

2011-01-01

 tesis que para obtener el grado de Doctor en Geografía, presenta Neftalí García Castro ; asesor Álvaro Sánchez Crispín. 186 páginas : diagramas, mapas. Doctorado en Geografía UNAM, Facultad de Filosofía y Letras, 2011

Actitudes de los estudiantes del Grado de Magisterio y del Máster de Educación Especial hacia la inclusión educativa

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Raúl Tárraga Mínguez

2013-01-01

Full Text Available El objetivo de este trabajo fue analizar la actitud hacia la inclusión educativa de los futuros docentes. Doscientos setenta y cuatro estudiantes del Grado de Magisterio de Infantil y Primaria y del Máster de Educación Especial de la Universitat de València cumplimentaron una adaptación de la escala ORI (Opinions Relative to Integration of Students with Disabilities Scale. Se analizó la fiabilidad y estructura factorial del cuestionario. Se comparó la puntuación en la escala entre los estudiantes de grado y de máster; entre los estudiantes de Grado de Magisterio de Educación Infantil y el de Educación Primaria; y entre los estudiantes de grado antes y después de cursar la asignatura Necesidades Educativas Especiales. Todos los estudiantes mostraron una actitud favorable hacia la inclusión educativa. La actitud fue mejor en los estudiantes de la titulación de Educación Infantil que en los de Primaria. Existió una mejora significativa en la actitud de los estudiantes de Grado tras cursar la materia “Necesidades Educativas Especiales”. La actitud fue significativamente más favorable en los alumnos de Máster que en los alumnos de Grado. Los veinticinco ítems originales de la escala ORI se redujeron a veintitrés en nuestra adaptación, y los cuatro factores iniciales se incrementaron a cinco.

La Geografía en las enseñanzas universitarias de Grado en España: docencia y planes de estudios

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Luis Carlos Martínez Fernández

2017-01-01

Full Text Available La adaptación del sistema universitario español al Espacio Europeo de Educación Superior [EEES] ha supuesto una nueva organización de las enseñanzas superiores en nuestro país. En este contexto, el artículo detalla la presencia de la Geografía en los diferentes planes de estudios de Grado existentes, en los propios de Geografía y Ordenación del Territorio, como denominación más frecuente, y en otros Grados de las distintas ramas de conocimiento en que se agrupan los grandes campos del saber: Artes y Humanidades, Ciencias Sociales y Jurídicas, Ciencias e Ingeniería y Arquitectura. Mención aparte, por la larga vinculación establecida, merece la docencia de Geografía en las Escuelas de Magisterio, ahora trans - formadas en Facultades de Educación.

San Marino.

Science.gov (United States)

1985-02-01

San Marino, an independent republic located in north central Italy, in 1983 had a population of 22,206 growing at an annual rate of .9%. The literacy rate is 97% and the infant mortality rate is 9.6/1000. The terrain is mountainous and the climate is moderate. According to local tradition, San Marino was founded by a Christian stonecutter in the 4th century A.D. as a refuge against religious persecution. Its recorded history began in the 9th century, and it has survived assaults on its independence by the papacy, the Malatesta lords of Rimini, Cesare Borgia, Napoleon, and Mussolini. An 1862 treaty with the newly formed Kingdom of Italy has been periodically renewed and amended. The present government is an alliance between the socialists and communists. San Marino has had its own statutes and governmental institutions since the 11th century. Legislative authority at present is vested in a 60-member unicameral parliament. Executive authority is exercised by the 11-member Congress of State, the members of which head the various administrative departments of the goverment. The posts are divided among the parties which form the coalition government. Judicial authority is partly exercised by Italian magistrates in civil and criminal cases. San Marino's policies are tied to Italy's and political organizations and labor unions active in Italy are also active in San Marino. Since World War II, there has been intense rivalry between 2 political coalitions, the Popular Alliance composed of the Christian Democratic Party and the Independent Social Democratic Party, and the Liberty Committee, coalition of the Communist Party and the Socialist Party. San Marino's gross domestic product was $137 million and its per capita income was $6290 in 1980. The principal economic activities are farming and livestock raising, along with some light manufacturing. Foreign transactions are dominated by tourism. The government derives most of its revenue from the sale of postage stamps to

BIENESTAR PSICOLOGICO: ADULTOS MAYORES, ACTIVOS A TRAVES DEL VOLUNTARIADO

OpenAIRE

FERRADA MUNDACA; LESLIE ISABEL; FERRADA MUNDACA; LESLIE ISABEL

2011-01-01

El propósito del presente estudio fue establecer el grado de bienestar psicológico en adultos mayores voluntarios del programa "Asesores Seniors" de Senama Región Bio Bio y no voluntarios, usuarios del CESF AM San Pedro de la comuna de San Pedro de la Paz. Corresponde a un estudio cuantitativo, de tipo descriptivo, correlacional y comparativo. La muestra estuvo constituida por 60 adultos mayores, donde 30 de ellos corresponde al grupo de voluntarios y los otros 30 al grupo...

San Francisco District Laboratory (SAN)

Data.gov (United States)

Federal Laboratory Consortium — Program CapabilitiesFood Analysis SAN-DO Laboratory has an expert in elemental analysis who frequently performs field inspections of materials. A recently acquired...

Research on the behaviour of pressure suppression containment systems carried out at the University of Pisa

International Nuclear Information System (INIS)

Bigi, R.; Bovalini, R.; Mazzini, M.; Micheletti, E.

1978-01-01

A research programme has been carried out at the University of Pisa to study the thermo-hydraulic transient in pressure suppression containment systems during a LOCA. In the first series of experimental tests remarkable oscillations of pressure were observed both in dry and in wet-well. In order to describe these dynamic phenomena, a mathematical model has been set up; the main out-lines of this model are briefly described and the comparison between the calculated and experimental results is reported. (author)

DHX - Virtual reality storyboard: the case of the visual and acoustic tour of the Baptistery of Pisa

OpenAIRE

Palamidese, Patrizia; Carreras, Francesco; Coltelli, Primo; Massei, Leonardo; Bigliazzi, M.

2003-01-01

This report contains the detailed storyboard design of a non-linear story that describes a virtual visit of the Baptistery of Pisa, developed within the European project DHX - Digital Artistic and Ecological Heritage Exchange - IST-2001-33476, and described into the "Deliverable D2e.4 - Storyboard of the research prototype scenario" of the project. The scenario architecture makes use of digital storytelling and traditional dramaturgic concepts such as scenes layout, timing, emotional effects,...

Examination of the PISA 2009 Reading Skills and Information and Communication Technology (ICT) Use Skills of Turkish Students

Science.gov (United States)

Acar, Tülin

2015-01-01

The aim of this paper is to determine relation between PISA Reading Skills and ICT use skills of Turkish students. In this study are four variables such as joy/like Reading, use of Libraries, Online Reading and Plausible value in reading which are dealt with as indications of reading skills. It constitutes six variables such as attitude towards…

The brazilian students’ performance and the PISA assessment: some aspects for discussion

Directory of Open Access Journals (Sweden)

Andreia Freitas Zompero

2016-06-01

Full Text Available This study was carried out with students from the ninth grade called as "A" that does not develop science learning activities and another one called school "B" that does. This study instrument was two questions from the PISA, the question A of the activity named "The Diary of Semmelweis” and the activity question “Flies". We have analyzed the students the answers as "Total", "Partial" and "Zero". We have found out that the percentages of “Total and Partial” responses in activity 1 were higher in School "B" when compared to School "A"; whereas in activity 2, both schools had no "Total" answers performed. These results indicate that the skills and competencies related to scientific research must be developed in both schools.

The Effects of Upper-Secondary Education and Training Systems on Skills Inequality. A Quasi-Cohort Analysis Using PISA 2000 and the OECD Survey of Adult Skills

Science.gov (United States)

Green, Andy; Pensiero, Nicola

2016-01-01

Research tells us much about the effects of primary and lower-secondary schooling on skills inequality, but we know less about the impact of the next stage of education. This article uses a differences-in-differences analysis of data on literacy and numeracy skills in PISA 2000 and SAS 2011/12 to assess the contribution of upper-secondary…

Desigualdades territoriales en España e Italia : nuevas evidencias a partir de la evaluación PISA-2009

Directory of Open Access Journals (Sweden)

Luisa Donato

2012-01-01

Full Text Available El artículo investiga los factores de desarrollo territorial y de gestión del sistema educativo que explican las desigualdades educativas de los estudiantes entre las regiones italianas y entre las comunidades autónomas españolas. A partir de la base de datos OCDE PISA 2009 y de la imputación de indicadores agregados a nivel regional, se han elaborado modelos de regresión multinivel para estimar los efectos. Los resultados muestran como ambos países comparten un patrón similar en términos de diferenciación territorial en materia de eficacia educativa. No obstante, las diferencias se explican por motivos distintos. Mientras que en Italia las regiones que más riqueza agregada tienen son las que obtienen mejores resultados, en España el margen para gestionar regionalmente las competencias permite a algunas comunidades con un menor nivel de riqueza focalizar sus políticas para compensar los desajustes debidos a la composición socioeconómica del territorio. Entre otros factores, cabe destacar la importancia de la inversión pública en educación y de los niveles de segregación social de los centros educativos como factores que explican las diferencias territorialesThis paper investigates regional factors of economic development and education system management, which explain educational inequalities between Italian regions, and between Spanish autonomous communities. Using the OECD PISA 2009 database and imputed regional indicators, multilevel regression models have been developed to estimate the effects. Results show that both countries share a similar pattern of territorial differentiation on educational effectiveness. Yet, differences are explained by different reasons. While in Italy wealthiest regions perform better, in Spain the margin given to regions to manage local education system enables certain communities with lower levels of wealth to compensate for mismatches due to socioeconomic composition of the region. Among others

Desarrollo de la competencia de trabajo en equipo en un grado universitario

Directory of Open Access Journals (Sweden)

Carmen Jaca

2017-01-01

Full Text Available El trabajo en equipo es una de las competencias clave para el desarrollo de muchos profesionales, más si cabe, para el de los futuros ingenieros. Es por ello que dicha competencia se debe definir primeramente en los planes de estudios de estas titulaciones como posteriormente debe controlarse y asegurarse la adquisición de la misma por parte de los alumnos. El artículo que aquí se presenta propone un modelo que sirve de referencia para entender los factores y procesos que surgen del desarrollo del trabajo en equipo y lo completa con la definición de unas herramientas que sirve para evaluar el grado de consecución de la competencia por parte de los alumnos a lo largo de un grado en ingeniería industrial. El modelo se ha probado en base a datos experimentales realizados en una escuela de ingenieros española, aunque está diseñado para que pueda adaptarse a cualquier nivel educativo en el que el trabajo en equipo sea definido como una competencia a desarrollar en el alumno.

El Grado en Medicina. Una visión por parte de los alumnos

Directory of Open Access Journals (Sweden)

Alejandro Callizo Silvestre

2015-01-01

Full Text Available El Grado en Medicina es uno de los grados más demandados por parte de los alumnos, como así lo demuestra su elevada nota de corte. Esto hace que los aspirantes se vean sometidos a una gran presión. Por eso y por la necesidad de evaluar habilidades sociales y emocionales indispensables para la práctica médica, nos planteamos si el método actual es el mejor y si la introducción de una prueba específica para Medicina ayudaría a definir mejor el perfil de estudiantes, más allá de la excelencia académica. La visión de los alumnos sobre el Grado en Medicina es, en general, muy positiva, sin olvidar que existen muchos aspectos que mejorar, especialmente en metodologías que aseguren una mayor motivación por parte del estudiantado y una mayor adherencia a los estudios. Por ello, desde el Consejo Estatal de Estudiantes de Medicina (CEEM abogamos por la introducción de estrategias educativas alternativas que nos aparten del mero estudio pasivo, como son el aprendizaje basado en problemas, el aumento de peso en los planes de estudio de las prácticas clínicas, así como darle mayor importancia a aspectos no científicos del ámbito profesional como la bioética o las habilidades comunicativas. Además, consideramos esencial la evaluación de esta clase de competencias mediante la introducción de ECOE (evaluación clínica objetiva estructurada, debido a que es un método más fiable a la hora de evaluar competencias no teóricas.

Error Analysis of Indonesian Junior High School Student in Solving Space and Shape Content PISA Problem Using Newman Procedure

Science.gov (United States)

Sumule, U.; Amin, S. M.; Fuad, Y.

2018-01-01

This study aims to determine the types and causes of errors, as well as efforts being attempted to overcome the mistakes made by junior high school students in completing PISA content space and shape. Two subjects were selected based on the mathematical ability test results with the most error, yet they are able to communicate orally and in writing. Two selected subjects then worked on the PISA ability test question and the subjects were interviewed to find out the type and cause of the error and then given a scaffolding based on the type of mistake made.The results of this study obtained the type of error that students do are comprehension and transformation error. The reasons are students was not able to identify the keywords in the question, write down what is known or given, specify formulas or device a plan. To overcome this error, students were given scaffolding. Scaffolding that given to overcome misunderstandings were reviewing and restructuring. While to overcome the transformation error, scaffolding given were reviewing, restructuring, explaining and developing representational tools. Teachers are advised to use scaffolding to resolve errors so that the students are able to avoid these errors.

Location, Location, Location: Implications of Geographic Situation on Australian Student Performance in PISA 2000. ACER Research Monograph Number 58

Science.gov (United States)

Creswell, John; Underwood, Catherine

2004-01-01

The primary focus of this report is to examine the effect that geographical location may have on the performance of students from schools from all parts of Australia who participated in the Organisation for Economic Co-operation and Development (OECD)/Programme for International Student Assessment (PISA 2000). Approximately 5,477 students from 231…

Presentación de la Asignatura Laboratorio Integrado de Química Grado en Biotecnología

OpenAIRE

Rodríguez-Izquierdo, José María

2012-01-01

Seminario de Presentación de la asignatura Laboratorio Integrado de Química del Grado en Biotecnología. Esta presentación se realizó en el marco del proyecto de innovación docente: “Puesta en Marcha y Mejora del Laboratorio Integrado de Química en la Titulación de Biotecnología” (Ref: PI2_12_016)

Evaluation of the integrity of reactor vessels designed to ASME Code, Sections I and/or VIII

International Nuclear Information System (INIS)

Hoge, K.G.

1976-01-01

A documented review of nuclear reactor pressure vessels designed to ASME Code, Sections I and/or VIII is made. The review is primarily concerned with the design specifications and quality assurance programs utilized for the reactor vessel construction and the status of power plant material surveillance programs, pressure-temperature operating limits, and inservice inspection programs. The following ten reactor vessels for light-water power reactors are covered in the report: Indian Point Unit No. 1, Dresden Unit No. 1, Yankee Rowe, Humboldt Bay Unit No. 3, Big Rock Point, San Onofre Unit No. 1, Connecticut Yankee, Oyster Creek, Nine Mile Point Unit No. 1, and La Crosse

International cooperation in accident analysis of RBMK reactors

International Nuclear Information System (INIS)

Kaliatka, A.; Isag

2005-01-01

Chouha Michel (Institute for Radiological Protection and Nuclear Safety), D'Auria Francesco (Institute of Pisa), Kaliatka Algirdas (Lithuanian Energy Institute), Uspuras Eugenijus (Lithuanian Energy Institute). The safety of nuclear power plants is a primary concern of the European Union (EU) and its Member States. In the early 1990s, the European Union decided to take a prominent role in international efforts to help the New Independent States (NIS) and countries of central Europe to ensure the safety of their nuclear reactors. The Commission's approach to nuclear safety in central and Eastern Europe and the NIS is based on two main objectives, which are fully in line with the policy of the international community as decided by the G7 in 1992: 1) In the short term, to improve operational safety; to make near term technical improvements to plants based on safety assessments and to enhance regulatory regimes; 2) In the longer term, to examine the scope for replacing less safe plants by the development of alternative energy sources and more efficient use of energy and to examine the potential for upgrading plants of more recent design. In this paper the safety concerns, related to RBMK type reactors (Russian acronym for 'Channelized Large Power Reactor) are discussed. These reactors were not exported and were built exclusively in the territory of the former Soviet Union. There are presently plants at Saint Petersburg (Sosnovy Bor), Kursk, Chernobyl and Smolensk. A total of 17 such reactors have been built and 12 are currently in operation. Two international projects: TACIS project 'Development of a code system for severe accident analysis in RBMK reactors' and PHARE projects 'Support to VATESI for Important Tasks Relevant to the Licensing Activities of Ignalina Nuclear Power Plant' are presented. The aim of the TACIS project is to help the Russian Authorities to build such capabilities, for their RBMK nuclear power plants (NPPs). The drawing of the Tacis nuclear

33 CFR 165.776 - Security Zone; Coast Guard Base San Juan, San Juan Harbor, Puerto Rico

Science.gov (United States)

2010-07-01

... 33 Navigation and Navigable Waters 2 2010-07-01 2010-07-01 false Security Zone; Coast Guard Base San Juan, San Juan Harbor, Puerto Rico 165.776 Section 165.776 Navigation and Navigable Waters COAST... Guard District § 165.776 Security Zone; Coast Guard Base San Juan, San Juan Harbor, Puerto Rico (a...

Aplicación de tres índices bióticos en el río San Juan, Andes, Colombia (Application of three biotic indexes in the river San Juan, Andes, Colombia

Directory of Open Access Journals (Sweden)

Mailedt Paola Murillo Torrentes

2016-09-01

Full Text Available Durante los meses de febrero, mayo, agosto y octubre del año 2014, se evaluó la calidad del agua del río San Juan. Para tal fin se establecieron seis puntos de muestreo donde se recolectaron muestras de agua y macroinvertebrados acuáticos para los análisis fisicoquímicos e hidrobiológicos. Se aplicaron y modificaron los índices bióticos EPT (efemerópteros, plecópteros, tricópteros, BMWP/Col (Biological Monitoring Working Party y ASPT (Average Score per Taxon basados en las comunidades de macroinvertebrados acuáticos capturados. Los resultados de las variables fisicoquímicas y los índices bióticos indican que las estaciones E1 y E2 son las que presentan menor grado de contaminación, en las demás estaciones disminuye considerablemente la calidad del agua debido a las actividades económicas desarrolladas en el sector y a su cercanías con el casco urbano del municipio de Andes. De los tres índices analizados, el ASPT modificado y adaptado al río San Juan es el que mejor se relaciona con las condiciones ambientales del río en tanto las características de los macroinvertebrados acuáticos recolectados y analizados en el trayecto objeto de estudio. (Abstract. During the months of February, May, August and October 2014, the water quality of the San Juan River was assessed. To this aim, six sampling points were established, where water samples and macroinvertebrates for physical-chemical and hydrobiological analysis were collected. Three biotic indexes were applied and one modified: EPT (Ephemeroptera, Plecoptera, Trichoptera, BMWP / Col (Biological Monitoring Working Party and ASPT (Average Score per Taxon based on the captured communities of aquatic macroinvertebrates. The results of the physical-chemical variables and biotic indixes indicate that E1 and E2 stations are those with lower degree of contamination, other stations considerably decreased water quality due to economic activities around, and the short distance with the

What Should Educational Reform in Indonesia Look Like?--Learning from the PISA Science Scores of East-Asian Countries and Singapore

Science.gov (United States)

Suprapto, Nadi

2016-01-01

Indonesia always continually failed international assessments even though many efforts have been made. The results of PISA 2012 put Indonesian students in the worst position. In contrast, East Asian countries' performance well in mathematics, reading, and science. Indeed, Singapore has the best performance in the Southeast Asia region even in the…

Seguimiento de la adquisición de competencias profesionales en el Grado de Psicología

OpenAIRE

Zubiauz de Pedro, Begoña; Mayor Cinca, María Ángeles; Arana Martínez, José María; Ortiz Oria, Vicente; Jenaro Río, Cristina; García-Meilán, Juan José

2014-01-01

El presente trabajo pretende comprobar qué nivel de competencia perciben haber alcanzado los estudiantes del Grado de Psicología en aquellas actividades directamente relacionadas con las tareas de su desempeño profesional. La muestra la constituyen alumnos de varios cursos de Psicología de la Universidad de Salamanca. Los estudiantes responderán on-line, al final de curso, a un cuestionario de autopercepción de competencias profesionales (1=Nada competente; 5=Muy competente) correspondientes ...

Development of Advanced Monitoring System with Reactor Neutrino Detection Technique for Verification of Reactor Operations

International Nuclear Information System (INIS)

Furuta, H.; Tadokoro, H.; Imura, A.; Furuta, Y.; Suekane, F.

2010-01-01

Recently, technique of Gadolinium-loaded liquid scintillator (Gd-LS) for reactor neutrino oscillation experiments has attracted attention as a monitor of reactor operation and ''nuclear Gain (GA)'' for IAEA safeguards. When the thermal operation power is known, it is, in principle, possible to non-destructively measure the ratio of Pu/U in reactor fuel under operation from the reactor neutrino flux. An experimental program led by Lawrence Livermore National Laboratory and Sandia National Laboratories in USA has already demonstrated feasibility of the reactor monitoring by neutrinos at San Onofre Nuclear Power Station, and the Pu monitoring by neutrino detection is recognized as a candidate of novel technology to detect undeclared operation of reactor. However, further R and D studies of detector design and materials are still necessary to realize compact and mobile detector for practical use of neutrino detector. Considering the neutrino interaction cross-section and compact detector size, the detector must be set at a short distance (a few tens of meters) from reactor core to accumulate enough statistics for monitoring. In addition, although previous reactor neutrino experiments were performed at underground to reduce cosmic ray muon background, feasibility of the measurement at ground level is required for the monitor considering limited access to the reactor site. Therefore, the detector must be designed to be able to reduce external backgrounds extremely without huge shields at ground level, eg. cosmic ray muons and fast neutrons. We constructed a 0.76 ton Gd-LS detector, and carried out a reactor neutrino measurement at the experimental fast reactor JOYO in 2007. The neutrino detector was set up at 24.3m away from the reactor core at the ground level, and we understood the property of the main background; the cosmic-ray induced fast neutron, well. Based on the experience, we are constructing a new detector for the next experiment. The detector is a Gd

San Onofre PWR Data for Code Validation of MOX Fuel Depletion Analyses - Revision 1

International Nuclear Information System (INIS)

Hermann, O.W.

2000-01-01

The isotopic composition of mixed-oxide fuel (fabricated with both uranium and plutonium isotopes) discharged from reactors is of interest to the Fissile Material Disposition Program. The validation of depletion codes used to predict isotopic compositions of MOX fuel, similar to studies concerning uranium-only fueled reactors, thus, is very important. The EEI-Westinghouse Plutonium Recycle Demonstration Program was conducted to examine the use of MOX fuel in the San Onofre PWR, Unit I, during cycles 2 and 3. The data, usually required as input to depletion codes, either one-dimensional or lattice codes, were taken from various sources and compiled into this report. Where data were either lacking or determined inadequate, the appropriate data were supplied from other references. The scope of the reactor operations and design data, in addition to the isotopic analyses, was considered to be of sufficient quality for depletion code validation

Valuación de la calidad urbano-ambiental. Una modelación hedónica: San Nicolás de los Garza, México

Directory of Open Access Journals (Sweden)

Jesús Manuel Fitch Osuna

2013-01-01

Full Text Available En esta investigación se aborda la teoría de la formación espacial de valores inmobilia - rios (vivienda en el municipio de San Nicolás de los Garza, México. Ese ámbito se en - cuentra inmerso en una dinámica metropolitana, de ahí que se evalúe el proceso inmo - biliario frente a las fuerzas centrales y periféricas que generan el crecimiento y el ciclo de vida urbano e inmobiliario, así como la calidad urbana ambiental. El resultado es un modelo de precios hedónicos que definen los atributos que explican con mayor grado de significancia el cambio en el valor del suelo. Todo ello coadyuva a la implementación de una política de suelo.

Deterioro de las cerámicas y vidrieras del edificio del Ayuntamiento de San Sebastián

Directory of Open Access Journals (Sweden)

Alava, J. I.

1998-12-01

Full Text Available The ornamental ceramics and stained-glass windows of the City Hall building of San Sebastian have been studied. This building is a national monument which has been restored recently. It has been studied the origin of the observed high deterioration degree of the superficial enamel of these ceramics. We have concluded that the deterioration has a physicochemical origin. The biological origin has been excluded because of the high concentration of heavy metals leached from the enamel which avoid the growth of microorganisms. It has also been observed an increase of some elements and the loss of another ones in the first µm of depth.

Se ha estudiado las cerámicas y las vidrieras que sirven de adorno al edificio del Ayuntamiento de San Sebastián, considerado monumento nacional, y que ha sido objeto de una reciente restauración. Se ha observado que las cerámicas presentan un alto grado de deterioro de la capa de esmalte superficial, y se ha estudiado el posible origen de este deterioro. Se concluye que el deterioro es de origen fisicoquímico, no pudiendo este ser de origen biológico debido a las elevadas concentraciones de metales pesados que lixivian de dicho esmalte y que impiden el crecimiento de microorganismos. Se ha observado asimismo que las vidrieras presentan un aumento de ciertos elementos y pérdida de otros en los primeros µm de profundidad.

76 FR 1386 - Safety Zone; Centennial of Naval Aviation Kickoff, San Diego Bay, San Diego, CA

Science.gov (United States)

2011-01-10

...-AA00 Safety Zone; Centennial of Naval Aviation Kickoff, San Diego Bay, San Diego, CA AGENCY: Coast... zone on the navigable waters of San Diego Bay in San Diego, CA in support of the Centennial of Naval... February 12, 2010, the Centennial of Naval Aviation Kickoff will take place in San Diego Bay. In support of...

Safety evaluation report related to the full-term operating license for San Onofre Nuclear Generating Station, Unit 1 (Docket No. 50-206)

International Nuclear Information System (INIS)

1991-07-01

The safety evaluation report for the full-term operating license application filed by the Southern California Edison Company and the San Diego Gas and Electric Company has been prepared by the Office of Nuclear Reactor Regulation of the US Nuclear Regulatory Commission. The facility is located in San Diego County, California. The staff has evaluated the issues related to the conversion of the provisional operating license to a full-term operating license and concluded that the facility can continue to be operated without endangering the health and safety of the public following the license conversion. 43 refs., 3 figs., 3 tabs

Competencias desde la perspectiva intercultural para el grado de educación infantil

Directory of Open Access Journals (Sweden)

Fernando GONZÁLEZ ALONSO

2005-01-01

adecuar sus titulaciones hacia el Espacio Europeo de Educación Superior, a través de la planificación de los grados en Educación Infantil y Educación Primaria. La propuesta de competencias específicas desde la perspectiva intercultural para Educación infantil, puede resultar un interesante punto de partida.

76 FR 22809 - Safety Zone; Bay Ferry II Maritime Security Exercise; San Francisco Bay, San Francisco, CA

Science.gov (United States)

2011-04-25

... DEPARTMENT OF HOMELAND SECURITY Coast Guard 33 CFR Part 165 [Docket No. USCG-2011-0196] RIN 1625-AA00 Safety Zone; Bay Ferry II Maritime Security Exercise; San Francisco Bay, San Francisco, CA AGENCY... Security Exercise; San Francisco Bay, San Francisco, CA. (a) Location. The limits of this safety zone...

INR TRIGA Research Reactors: A Neutron Source for Radioisotopes and Materials Investigation

International Nuclear Information System (INIS)

Barbos, D.; Ciocanescu, M.; Paunoiu, C.; Bucsa, A.F.

2013-01-01

At the INR there are 2 high intensity neutron sources. These sources are in fact the two nuclear TRIGA reactors: TRIGA SSR 14 MW and TRIGA ACPR. TRIGA stationary reactor is provided with several in-core irradiation channels. Other several out-of-core irradiation channels are located in the vertical channels in the beryllium reflector blocks. The maximum value of the thermal neutron flux (E 14 cm -2 s -1 and of fast neutron flux (E>1 MeV) is 6.89×10 13 cm -2 s -1 . For neutron activation analysis both reactors are used and k0-NAA method has been implemented. At INR Pitesti a prompt gamma ray neutron activation analysis devices has been designed, manufactured ant put into operation. For nuclear materials properties investigation neutron radiography methods was developed in INR. For these purposes two neutron radiography devices were manufacture, one of them underwater and other one dry. The neutron beams are used for investigation of materials properties and components produced or under development for applications in the energy sector (fission and fusion). At TRIGA 14 MW reactor a neutron difractormeter and a SANS devices are available for material residual stress and texture measurements. TRIGA 14 MW reactor is used for medical and industrial radioisotopes production ( 131 I, 125 I, 192 Ir, etc) and a method for 99 Mo- 99 Tc production from fission is under developing. At INR Pitesti several special programmes for new types of nuclear fuel behavior characterization are under development. (author)

Assessment of Radiation Embrittlement in Nuclear Reactor Pressure Vessel Surrogate Materials

Science.gov (United States)

Balzar, Davor

2010-10-01

The radiation-enhanced formation of small (1-2 nm) copper-rich precipitates (CRPs) is critical for the occurrence of embrittlement in nuclear-reactor pressure vessels. Small CRPs are coherent with the bcc matrix, which causes local matrix strain and interaction with the dislocation strain fields, thus impeding dislocation mobility. As CRPs grow, there is a critical size at which a phase transformation occurs, whereby the CRPs are no longer coherent with the matrix, and the strain is relieved. Diffraction-line-broadening analysis (DLBA) and small-angle neutron scattering (SANS) were used to characterize the precipitate formation in surrogate ferritic reactor-pressure vessel steels. The materials were aged for different times at elevated temperature to produce a series of specimens with different degrees of copper precipitation. SANS measurements showed that the precipitate size distribution broadens and shifts toward larger sizes as a function of ageing time. Mechanical hardness showed an increase with ageing time, followed by a decrease, which can be associated with the reduction in the number density as well as the loss of coherency at larger sizes. Inhomogeneous strain correlated with mechanical hardness.

Estudio de variables determinantes de eficiencia a través de los modelos jerárquicos lineales en la evaluación PISA 2006: el caso de España. Study of the determinants of efficiency applying Hierarchical Linear Models in the assessment PISA 2006: the case of Spain

Directory of Open Access Journals (Sweden)

Esther López Martín

2009-08-01

Full Text Available Este trabajo relaciona el rendimiento obtenido por los alumnos españoles en la evaluación PISA 2006 con variables del entorno del estudiante y del centro que están asociadas a la función básica de producción educativa (Hanushek, 1989 y, por lo tanto, a la eficiencia del sistema educativo. El análisis se ha llevado a cabo mediante la técnica de análisis multinivel, ya que permite el estudio adecuado de estructuras de datos anidados, como ocurre en el caso de datos educativos. A la luz de los resultados obtenidos es posible evidenciar una relación entre las diferentes variables de recursos, tanto de alumno (por ejemplo recursos educativos, posesiones culturales en casa como de centro (titularidad o número de ordenadores por alumno, entre otras con el rendimiento académico. This paper connects Spanish students performance in science in PISA 2006 with indicators of students, teachers and institutions associated to the educational production function (Hanushek, 1989 and, consequently, with the efficiency of the educational system. The analysis has been carried out by means of multilevel analysis; this technique is appropriate for the study of hierarchical data structures, as is the case for educational information. In light of the information provided it is possible to demonstrate a relationship between resources variables, both in the student's level (for example educational resources, cultural possessions in home and at the school level (for example ownership, computers with the academic performance.

Quaternary geology of Alameda County, and parts of Contra Costa, Santa Clara, San Mateo, San Francisco, Stanislaus, and San Joaquin counties, California: a digital database

Science.gov (United States)

Helley, E.J.; Graymer, R.W.

1997-01-01

Alameda County is located at the northern end of the Diablo Range of Central California. It is bounded on the north by the south flank of Mount Diablo, one of the highest peaks in the Bay Area, reaching an elevation of 1173 meters (3,849 ft). San Francisco Bay forms the western boundary, the San Joaquin Valley borders it on the east and an arbitrary line from the Bay into the Diablo Range forms the southern boundary. Alameda is one of the nine Bay Area counties tributary to San Francisco Bay. Most of the country is mountainous with steep rugged topography. Alameda County is covered by twenty-eight 7.5' topographic Quadrangles which are shown on the index map. The Quaternary deposits in Alameda County comprise three distinct depositional environments. One, forming a transgressive sequence of alluvial fan and fan-delta facies, is mapped in the western one-third of the county. The second, forming only alluvial fan facies, is mapped in the Livermore Valley and San Joaquin Valley in the eastern part of the county. The third, forming a combination of Eolian dune and estuarine facies, is restricted to the Alameda Island area in the northwestern corner of the county.

Grado de información de los pacientes remitidos a un servicio de oncología radioterápica

Directory of Open Access Journals (Sweden)

C. RODRÍGUEZ TERRÍN

2002-01-01

Full Text Available En España, la información sobre el diagnóstico de cáncer no está claramente estipulada. Los objetivos de este estudio son: 1 averiguar el nivel de información de los pacientes remitidos a nuestro servicio, 2 conocer las características del paciente relacionadas con su grado de información y 3 determinar la evolución con respecto a este tema. Entre Mayo-Noviembre de 1999, se incluyeron consecutivamente 116 pacientes que cumplimentaron un breve formulario en el momento de su llegada a nuestro servicio. Sólo un 48.3% habían sido informados de su diagnóstico correctamente. Las características de los pacientes con mayor grado de información son: el sexo femenino (p= 0.00024, la edad menor de 58 años (p=0.00006 y el padecer un cáncer mamario-ginecológico (p=0.00003. Los pacientes oncológicos tienen una información incompleta sobre su diagnóstico. Las características sociodemográficas y el tipo de cáncer afectan a la información. Las habilidades de comunicación y la empatía son instrumentos necesarios en la relación médico-paciente.

Modelo de gestión de crédito y cobranza para recuperar cartera vencida en la Cooperativa de ahorro y crédito San Miguel de Los Bancos y sus tres agencias que la integran

OpenAIRE

Armijos Loaiza, Alex David; Oña Muñoz, Julio César

2015-01-01

El presente trabajo de grado se elaboró con el fin de brindar una solución a la problemática que enfrenta la Cooperativa de Ahorro y Crédito San Miguel de los Bancos al momento de recuperar sus créditos emitidos a sus clientes, por lo tanto, se propuso modelo de gestión de crédito y cobranza para mejorar las deficiencias en los procesos que actualmente se llevan a cabo dentro área de crédito. Dentro del primer capítulo se hizo referencia a las fuentes bibliográficas y referenciales que permit...

Análisis de los discursos de los alumnos del Grado de Publicidad y Relaciones Públicas del Campus María Zambrano, con respecto al software

OpenAIRE

Aguilar García, Alberto

2017-01-01

Este trabajo de fin de grado presenta un análisis del discurso de los alumnos del Campus María Zambrano que estudian el grado de Publicidad y Relaciones Públicas. En este proyecto se plantea las cuestiones referidas a la imagen mental de dichos alumnos acerca de los distintos software, el hardware que se utiliza hoy en día, de las licencias que se adquieren, y de las marcas que se pagan. A grandes rasgos es una revisión crítica y un análisis racional de las distintas utilidades del software d...

Propensity Score Matching Helps to Understand Sources of DIF and Mathematics Performance Differences of Indonesian, Turkish, Australian, and Dutch Students in PISA

Science.gov (United States)

Arikan, Serkan; van de Vijver, Fons J. R.; Yagmur, Kutlay

2018-01-01

We examined Differential Item Functioning (DIF) and the size of cross-cultural performance differences in the Programme for International Student Assessment (PISA) 2012 mathematics data before and after application of propensity score matching. The mathematics performance of Indonesian, Turkish, Australian, and Dutch students on released items was…

Multilevel Classification of PISA 2015 Research Participant Countries' Literacy and These Classes' Relationship with Information and Communication Technologies

Science.gov (United States)

Yalcin, Seher

2018-01-01

In this study, it is aimed to distinguish the reading skills of students participating in PISA 2015 application into multi-level latent classes at the student and country level. Furthermore, it is aimed to examine how the clusters emerged at country-level is predicted by variables as students have the information and communication technology (ICT)…

76 FR 9709 - Water Quality Challenges in the San Francisco Bay/Sacramento-San Joaquin Delta Estuary

Science.gov (United States)

2011-02-22

... Water Quality Challenges in the San Francisco Bay/Sacramento-San Joaquin Delta Estuary AGENCY... the San Francisco Bay/ Sacramento-San Joaquin Delta Estuary (Bay Delta Estuary) in California. EPA is... programs to address recent significant declines in multiple aquatic species in the Bay Delta Estuary. EPA...

From CERN to Entrepreneurship: we don't know what we don't know

CERN Document Server

CERN. Geneva

2017-01-01

Piero Zucchelli is founder and CEO of Andrew Alliance, a company specialising in novel liquid handling robots designed to enhance the reproducibility and efficiency of the pipetting process. Before founding Andrew Alliance, Piero was CTO of SpinX Technologies for 8 years and prior to that a staff member at CERN.    

The San Bernabe power substation; La subestacion San Bernabe

Energy Technology Data Exchange (ETDEWEB)

Chavez Sanudo, Andres D. [Luz y Fuerza del Centro, Mexico, D. F. (Mexico)

1997-12-31

The first planning studies that gave rise to the San Bernabe substation go back to year 1985. The main circumstance that supports this decision is the gradual restriction for electric power generation that has been suffering the Miguel Aleman Hydro System, until its complete disappearance, to give priority to the potable water supply through the Cutzamala pumping system, that feeds in an important way Mexico City and the State of Mexico. In this document the author describes the construction project of the San Bernabe Substation; mention is made of the technological experiences obtained during the construction and its geographical location is shown, as well as the one line diagram of the same [Espanol] Los primeros estudios de planeacion que dieron origen a la subestacion San Bernabe se remontan al ano de 1985. La circunstancia principal que soporta esta decision es la restriccion paulatina para generar energia que ha venido experimentando el Sistema Hidroelectrico Miguel Aleman, hasta su desaparicion total, para dar prioridad al suministro de agua potable por medio del sistema de bombeo Cutzamala, que alimenta en forma importante a la Ciudad de Mexico y al Estado de Mexico. En este documento el autor describe el proyecto de construccion de la subestacion San Bernabe; se mencionan las experiencias tecnologicas obtenidas durante su construccion y se ilustra su ubicacion geografica, asi como un diagrama unifilar de la misma

Aprendizaje de las competencias de investigación en el Grado de Medicina: análisis y evaluación de las calificaciones de los estudiantes en el Trabajo de Final de Grado

Directory of Open Access Journals (Sweden)

Luis González-de Paz

Full Text Available La adaptación al Plan Bolonia del Grado de Medicina en España ha introducido en los planes de estudio la realización del Trabajo de Final de Grado (TFG. A continuación se presenta un modelo de TFG y se estudia la validez de un sistema de evaluación de las calificaciones para medir los resultados del aprendizaje de las competencias de investigación y pensamiento crítico. Se evaluaron 62 trabajos. Para su realización los estudiantes contaron con un equipo de tutores expertos en investigación clínica y en metodología. El trabajo fue evaluado por tres profesores, cada uno completó una rúbrica de 10 ítems. La validez del sistema de evaluación se analizó mediante el modelo de múltiples facetas de Rasch, que permite estudiar las diferencias en la severidad de los evaluadores, los resultados de los estudiantes y la dificultad de los ítems. Se calificaron los trabajos de 62 estudiantes, totalizando 186 rúbricas. El 58% de los estudiantes mostraron una habilidad superior a la severidad de los evaluadores y a la dificultad de los ítems de la rúbrica. No se observaron diferencias significativas en la severidad de los evaluadores, ni en las calificaciones finales según el tipo de evaluador. El ítem más difícil para los estudiantes fue la selección del diseño epidemiológico del protocolo. El método de análisis propuesto para el TFG es eficaz para evaluar la adquisición de las competencias relacionadas con la investigación y el pensamiento crítico en los estudiantes del último curso del Grado de Medicina.

Online monitoring and diagnostic system on RA-6 nuclear reactor

International Nuclear Information System (INIS)

Garcia Peyrano, O. A.; Marticorena, M.; Koch, R. G.; Martinez, J. S; Berruti, G. E.; Nunez, W. M.; Gonzales, L. A.; Tarquini, L. D.; Sotelo, J. P

2009-01-01

This paper presents the Online Automatic Monitoring and Diagnostic System for mechanical components, installed on RA-6 Nuclear Reactor (San Carlos de Bariloche, Argentina). This system has been designed, installed and set-up by the Vibrations and Mechatronics Laboratory (Centro Atomico Bariloche, Comision Nacional de Energia Atomica) and Sitrack.com Argentina SA. This system provides an online mechanical diagnostic of the main reactor components, allowing incipient failures to be early detected and identified, avoiding unscheduled shut-downs and reducing maintenance times. The diagnostic is accomplished by an online analysis of the vibratory signature of the mechanical components, obtained by vibrations sensors on the main pump and the decay tank. The mechanical diagnostic and the main operational parameters are displayed on the reactor control room and published on the internet. [es

Secuencia didáctica: Introducción a los significados clásico y frecuencial de la probabilidad para estudiantes de grado quinto de primaria

OpenAIRE

Velásquez Gómez, Mónica

2014-01-01

En este trabajo se plantea la propuesta de una secuencia didáctica para la enseñanza de la probabilidad en el grado quinto de primaria. En el documento se incluye una revisión de los significados de la probabilidad, obstáculos en el uso de conceptos probabilísticos, coherencia y pertinencia con los lineamientos curriculares y un breve análisis de los conocimientos previos de un grupo de estudiantes del grado quinto de primaria. En el documento se describe el proceso de construcción de la ...

When Technology Does Not Add Up: ICT Use Negatively Predicts Mathematics and Science Achievement for Finnish and Turkish Students in PISA 2012

Science.gov (United States)

Bulut, Okan; Cutumisu, Maria

2018-01-01

This study examines the data of students from Finland (n = 8,829) and Turkey (n = 4,848) who participated in the 2012 Programme for International Student Assessment (PISA). The purpose of this study is to discern whether the use and availability of information and communication technologies (ICT) at home and at school have a differential impact on…

75 FR 15611 - Safety Zone; United Portuguese SES Centennial Festa, San Diego Bay, San Diego, CA

Science.gov (United States)

2010-03-30

...-AA00 Safety Zone; United Portuguese SES Centennial Festa, San Diego Bay, San Diego, CA AGENCY: Coast... navigable waters of the San Diego Bay in support of the United Portuguese SES Centennial Festa. This... Centennial Festa, which will include a fireworks presentation originating from a tug and barge combination in...

Enhanced Preliminary Assessment Report: Presidio of San Francisco Military Reservation, San Francisco, California

Science.gov (United States)

1989-11-01

CAD981415656 Filmore Steiner Bay San Francisco 24 PG&E Gas Plant SanFran 502-IG CAD981415714 Bay North Point Buchanan Laguna 25 PG&E Gas Plant SanFran 502-1H...76-ioV /5,JO /0.7 /,230 PSF Water PSF, Main U.N. Lagunda Honda Analvte Plant Clearwell Reservoir Plaza Reservoi- Chlordane inetab. ə.2 ə.2 (1.2 ə.2

Classification of SBS Mathematics Questions between 2008-2013 years with Respect to PISA Competency Levels

Directory of Open Access Journals (Sweden)

Tuğba Aydoğdu İskenderoğlu

2013-11-01

Full Text Available One of the main objectives of the education is students are ready to make the conditions of the age in which they live. From this perspective approach of mathematics education changed in our age looking for answers to the question as instead of "what we teach them?", "How they use our teaching which their life?". In other words, the main purpose of education is our students collected under the mathematical literacy. Then teach them which students' knowledge which use in everyday life, to make logical inferences, interpret and solve problems related to the various situations. The purpose of this study was implemented in our country between the years of 2008-2013 SBS questions examined and categorized according to the scale which PISA mathematics proficiency. In this study, data was collected using qualitative research techniques, document analysis methods of data collection. The results of the study, the questions examined in this study all levels of math exams in 2008-2013 SBS was not appropriate questions. Questions in general 2, 3 and 4 levels of which they are located, exams include just one question which is the highest level of 5 and there have not been any questions level 6. SBS administered by the Ministry of National Education thought-provoking the absence of the upper levels questions. For this reason, math questions of SBS should be every level and be prepared questions reconsideration measurement is recommended.Key Words: PISA, Mathematics competency levels, Mathematics competency scale, Mathematics problems of SBS

Submerged anaerobic membrane bioreactor (SAnMBR) performance on sewage treatment: removal efficiencies, biogas production and membrane fouling.

Science.gov (United States)

Chen, Rong; Nie, Yulun; Ji, Jiayuan; Utashiro, Tetsuya; Li, Qian; Komori, Daisuke; Li, Yu-You

2017-09-01

A submerged anaerobic membrane reactor (SAnMBR) was employed for comprehensive evaluation of sewage treatment at 25 °C and its performance in removal efficiency, biogas production and membrane fouling. Average 89% methanogenic degradation efficiency as well as 90%, 94% and 96% removal of total chemical oxygen demand (TCOD), biochemical oxygen demand (BOD) and nonionic surfactant were obtained, while nitrogen and phosphorus were only subjected to small removals. Results suggest that SAnMBRs can effectively decouple organic degradation and nutrients disposal, and reserve all the nitrogen and phosphorus in the effluent for further possible recovery. Small biomass yields of 0.11 g mixed liquor volatile suspended solids (MLVSS)/gCOD were achieved, coupled to excellent methane production efficiencies of 0.338 NLCH 4 /gCOD, making SAnMBR an attractive technology characterized by low excess sludge production and high bioenergy recovery. Batch tests revealed the SAnMBR appeared to have the potential to bear a high food-to-microorganism ratio (F/M) of 1.54 gCOD/gMLVSS without any inhibition effect, and maximum methane production rate occurred at F/M 0.7 gCOD/gMLVSS. Pore blocking dominated the membrane fouling behaviour at a relative long hydraulic retention time (HRT), i.e. >12 hours, while cake layer dominated significantly at shorter HRTs, i.e. <8 hours.

Integrated plant safety assessment: Systematic Evaluation Program, San Onofre Nuclear Generating Station, Unit 1 (Docket No. 50-206): Final report

International Nuclear Information System (INIS)

1986-12-01

The Systematic Evaluation Program was initiated in February 1977 by the US Nuclear Regulatory Commission to review the designs of older operating nuclear reactor plants to reconfirm and document their safety. The review provides: (1) an assessment of how these plants compare with current licensing safety requirements relating to selected issues; (2) a basis for deciding on how these differences should be resolved in an integrated plant review; and (3) a documented evaluation of plant safety. This report documents the review of San Onofre Nuclear Generating Station, Unit 1, operated by Southern California Edison Company. The San Onofre plant is one of ten plants reviewed under Phase II of this program. This report indicates how 137 topics selected for review under Phase I of the program were addressed. Equipment and procedural changes have been identified as a result of the review. This report will be one of the bases in considering the issuance of a full-term operating license in place of the existing provisional operating license. This report also addresses the comments and recommendations made by the Advisory Committee on Reactor Safeguards in connection with its review of the draft report issued in April 1985

Epistemological Obstacles Experienced by Indonesian Students in Answering Mathematics PISA Test on the Content Uncertainty and Data

Directory of Open Access Journals (Sweden)

H Rahman

2017-12-01

Full Text Available The purpose of this research is trying to identify epistemological obstacles which were experienced by Indonesian students in answering PISA test for mathematics literacy content uncertainty and data. Epistemological obstacles was identified by giving a test to the respondent, students of grade 7th and 8th who have studied data representation in the class. Respondents’ work analysed by qualitative method. The result showed that respondents have epistemological obstacles in reading the data, reading between the data, and reading beyond the data. To gain further understanding, some respondents chose to be interviewed.

Diseño de una formulación de ciclosporina A solución oral con alto grado de dispersión

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Suslebys Salomón Izquierdo

2013-03-01

Full Text Available La ciclosporina A (CsA por sus propiedades inmunosupresoras es empleada en el transplante de órganos sólidos, médula ósea, así como para determinados estadíos de ciertas enfermedades autoinmunes. En Cuba, se comercializa una solución oral que presenta problemas de absorción gastrointestinal. Objetivos: lograr una microemulsión preconcentrada conteniendo ciclosporina A con alto grado de dispersión, igual o mayor que la formulación comercial. Métodos: se realizó un estudio de porcentajes de los emulgentes y el balance hidrófilo lipófilo (HLB, en los intervalos que permitieran obtener sistemas automicroemulsionables a través de un diseño factorial multinivel. Se empleó el porciento de transmitancia como variable de respuesta en la determinación del grado de dispersión de la formulación. También se realizó la evaluación de las características organolépticas de la formulación seleccionada, el estudio reológico, el conteo microbiano y la efectividad antimicrobiana. Resultados: los factores estudiados tienen influencia significativa sobre el porcentaje de transmitancia, la formulación con mayor grado de dispersión se logró empleando un 60 % de emulgentes junto a un HLB de 11,5 con valores de transmitancia de 95,03 %, significativamente mayor que el del producto líder en formato de cápsulas blandas que fue de 84,6 %. Organolépticamente el producto cumple con las características de líquido transparente, brillante y sin partículas en suspensión, con comportamiento Newtoniano desde el punto de vista reológico. El conteo de bacterias y hongos cumplió con los requisitos establecidos en la Farmacopea de los Estados Unidos para soluciones orales. Conclusiones: se logró una microemulsión preconcentrada de CsA en solución bebible con alto grado de dispersión, cumpliendo con los requisitos físicos y microbiológicos establecidos para este tipo de forma farmacéutica.

Diversidad de la familia Orchidaceae en los bosques montanos de San Ignacio (Cajamarca, Perú

Directory of Open Access Journals (Sweden)

Gloria Calatayud

2013-05-01

Full Text Available La insuficiente información sobre la flora, específicamente sobre la familia Orchidaceae y la inminente desaparición de los bosques en la Vertiente Oriental del río Chinchipe (San Ignacio, Cajamarca, fueron las razones suficientes que motivaron a realizar la presente investigación. La evaluación se realizó en cuatro localidades de la provincia San Ignacio (Cajamarca, durante el año 2000, con 27 cuadrantes de 500 m², distribuidos cada 100 m de altitud, desde los 800 hasta los 2700 m, el método de muestreo fue aleatorio. Según el índice de diversidad de Shannon–Wiener, la zona de estudio posee un alto grado de diversidad (entre H’= 5,93 en Selva Andina y H’= 4,02 en Camaná, gracias al buen estado de conservación de los bosques y a la topografía de la zona. Las localidades de Camaná-Crucero (173,55 son menos disímiles por presentar hábitats similares. Selva Andina (969,619 es la localidad más disímil con el grupo Crucero-Camaná-Nuevo Mundo, la cual a los 2700 m presenta un alto endemismo. Para las localidades evaluadas se reportan 205 especies distribuidas en 58 géneros, los cuales son reportes nuevos para la zona, 15 son registros nuevos para Perú, ocho de éstas dejan de ser endémicas para Ecuador. Se reporta por primera vez para Perú el género Chrysocycnis, y dos especies nuevas para la ciencia Sarcoglottis sp. y Maxillaria sp.

Operation and maintenance experience at the General Atomic Company's TRIGA reactor facility at San Diego, California

International Nuclear Information System (INIS)

Whittemore, W.L.; Stout, W.A.; Shoptaugh, J.R.; Chesworth, R.H.

1982-01-01

Since the startup of the original 250 kW TRIGA Mark I reactor in 1958, General Atomic Company has accumulated nearly 24 years of operation and maintenance experience with this type of reactor. In addition to the nearly 24 years of experience gained on the Mark I, GA has operated the 1.5 MW Advanced Prototype Test Reactor (Mark F) for 22 years and operated a 2 MW below-ground TRIGA Mark III for five years. Information obtained from normal and abnormal operation are presented. (author)

Grado di cheratinizzazione dell'epitelio ruminale e valutazione dello stato corporeo in ovini tenuti su pascoli di Brachypodium rupestre

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Paola Scocco

2013-06-01

Full Text Available L'articolo valuta e mette in correlazione i cambiamenti del grado di cheratinizzazione della mucosa ruminale con lo stato corporeo di ovini tenuti a pascolare per 20 giorni in un'area ad elevata copertura di paléo rupestre (Brachypodium rupestre. Il pascolo degli ovini in queste aree riduce il rischio di incendi boschivi. Tuttavia, l'assunzione di Brachypodium rupestre protratta per lunghi periodi può compromettere la salute generale degli animali. Lo scopo di questo studio è di determinare il periodo massimo di permanenza degli animali in queste aree. Ovini mantenuti su un pascolo semi-mesofilo sono stati utilizzati come gruppo di controllo. Nei giorni 1, 10 e 20 della sperimentazione, 5 animali di ogni gruppo sono stati sacrificati per la valutazione delle modificazioni del grado di cheratinizzazione dell'epitelio dell'atrio e del sacco ventrale del rumine. La valutazione dello stato corporeo, o body condition score (BCS, e il peso vivo (PV sono stati monitorati su altri 10 soggetti per gruppo. Il gruppo di controllo ha mostrato piccole variazioni del grado di cheratinizzazione del rumine che non hanno inciso negativamente sul BCS o sul PV. Il gruppo sperimentale ha mostrato un significativo incremento del grado di cheratinizzazione, già entro i primi dieci giorni, che ha portato ad un graduale abbassamento del BCS e ad un calo di peso tra il decimo e il ventesimo giorno. I dati ottenuti suggeriscono che al fine della prevenzione degli incendi boschivi gli ovini dovrebbero essere utilizzati a turno con periodi di permanenza nei pascoli ad alta copertura di Brachypodium rupestre non superiori ai 10-12 giorni.

Threats to Validity When Using Open-Ended Items in International Achievement Studies: Coding Responses to the PISA 2012 Problem-Solving Test in Finland

Science.gov (United States)

Arffman, Inga

2016-01-01

Open-ended (OE) items are widely used to gather data on student performance in international achievement studies. However, several factors may threaten validity when using such items. This study examined Finnish coders' opinions about threats to validity when coding responses to OE items in the PISA 2012 problem-solving test. A total of 6…

Análisis y puesta en marcha de estrategias de coordinación de asignaturas en 1º y 2º de grado de Psicología

OpenAIRE

Rueda Sánchez, Mercedes I.; Jenaro Río, Cristina

2012-01-01

Este trabajo se ha realizado en el marco de las labores de coordinación del Grado de Psicología, durante el curso 2011/2012, en la Facultad de Psicología de la Universidad de Salamanca. El objetivo ha sido conocer la percepción que tienen profesores y alumnos respecto al grado de formación y adquisición de competencias. Por un lado, hemos pretendido conocer la percepción que tienen los profesores sobre cómo consideran que han formado a sus alumnos en las competencias específicas y transversal...

Grado de adherencia terapéutica a los fármacos del metabolismo óseo-mineral: ¿toman nuestros pacientes la medicación prescrita?

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María Nieves Cazorla Santana

Full Text Available Los fármacos del metabolismo óseo-mineral tienen gran importancia el tratamiento de los pacientes de hemodiálisis, pero desconocemos las preferencias, y el grado de conocimiento de estos fármacos. Los objetivos del estudio fueron conocer el grado de adherencia terapéutica a los fármacos del metabolismo oseo-mineral, e identificar los factores más relevantes que influyen en la adherencia a este tipo de tratamiento. Pacientes y métodos: Se realizó un estudio transversal en un Centro de hemodiálisis, incluyendo 106 pacientes. Utilizamos el cuestionario simplificado de adherencia a la medicación (SMAQ¹ y un cuestionario específico sobre cumplimiento y preferencias, para conocer el grado de adherencia. Resultados: El 37,7% de los pacientes fue incumplidor según el cuestionario SMAQ. De ellos, el 34% no tomaba la medicación a la misma hora (P<0.000, el 5,7% incumplía el tratamiento los fines de semana (P<0.010, el 13,2% dejan de tomar la medicación cuando se encuentran mal (P<0.010; y en la última semana, el 18% reconocía que olvidó el tratamiento 1día (P= 0.001 y entre 2-3días (12,5%. El 52% no tiene preferencias por ningún quelante del fósforo y el 60.4% conocía la utilidad de los mismos. La principal razón de desagrado fue el aumento del consumo de agua (16%, seguido del tamaño del comprimido (15% y el carbonato de lantano es el fármaco que menos les gusta. Finalmente, el 91% reconoce recibir información dietética. Conclusiones: Como conclusión de nuestro estudio, el 37,7% de los pacientes en programa de hemodiálisis de nuestro centro, fue no adherente al tratamiento médico prescrito, según las respuestas obtenidas en el cuestionario SMAQ, y que el grado de conocimiento, información y/o compresión sobre el tratamiento médico-dietético prescrito a los pacientes son factores muy importantes para mejorar el grado de cumplimiento, por lo que la implicación activa el personal de enfermería constituye una

76 FR 10945 - San Luis Trust Bank, FSB, San Luis Obispo, CA; Notice of Appointment of Receiver

Science.gov (United States)

2011-02-28

... DEPARTMENT OF THE TREASURY Office of Thrift Supervision San Luis Trust Bank, FSB, San Luis Obispo, CA; Notice of Appointment of Receiver Notice is hereby given that, pursuant to the authority... appointed the Federal Deposit Insurance Corporation as sole Receiver for San Luis Trust Bank, FSB, San Luis...

A simulation of the San Andreas fault experiment

Science.gov (United States)

Agreen, R. W.; Smith, D. E.

1974-01-01

The San Andreas fault experiment (Safe), which employs two laser tracking systems for measuring the relative motion of two points on opposite sides of the fault, has been simulated for an 8-yr observation period. The two tracking stations are located near San Diego on the western side of the fault and near Quincy on the eastern side; they are roughly 900 km apart. Both will simultaneously track laser reflector equipped satellites as they pass near the stations. Tracking of the Beacon Explorer C spacecraft has been simulated for these two stations during August and September for 8 consecutive years. An error analysis of the recovery of the relative location of Quincy from the data has been made, allowing for model errors in the mass of the earth, the gravity field, solar radiation pressure, atmospheric drag, errors in the position of the San Diego site, and biases and noise in the laser systems. The results of this simulation indicate that the distance of Quincy from San Diego will be determined each year with a precision of about 10 cm. Projected improvements in these model parameters and in the laser systems over the next few years will bring the precision to about 1-2 cm by 1980.

34th UIT Heat Transfer Conference 2016

International Nuclear Information System (INIS)

2017-01-01

The annual UIT Heat Transfer Conference of the “Unione Italiana di Termofluidodinamica” aims at promoting cooperation in the field of heat transfer and thermal sciences, by bringing together scientists and engineers working in related areas. Several issues of interest are addressed, namely natural, forced and mixed convection, conduction, radiation, multi-phase fluid dynamics and interface phenomena, computational fluid dynamics, micro- and nano-scales, efficiency in energy systems, environmental technologies and buildings, heat transfer in fire engineering. The 34th UIT Conference was held in Ferrara (FE), Italy, 4–6 July, 2015 in the spaces of the Scientific and Technological Center of The University of Ferrara. The response has been enthusiastic: 61 abstracts, 36 oral and 18 poster presentations, 48 papers published on the Proceedings To encourage the debate, the Conference Program has scheduled ample poster sessions and invited lectures from the best experts in the field along with a few of the most talented researchers. Keynote Lectures were given by Professor Giovanni S. Barozzi (University of Modena), Professor Paolo Di Marco (University of Pisa) and Professor Nicola Bianco (University of Napoli Federico II). This special volume collects a selection of the scientific contributions discussed during this conference; these works give a good overview of the state-of-the art Italian research in the field of Heat Transfer related topics. I would like to thank sincerely the authors for presenting their works at the conference and in this special issue. I would also like to extend my thanks to the Scientific Committee and the authors for their accurate review process of each paper for this special issue. Special thanks go to the organizing committee. Professor Stefano Piva (president of The Organizing Committee) About UIT (Unione Italiana Termofluidodinamica) The Italian Union of Thermal-Fluid Dynamics (UIT) was founded in Bologna on December 19, 1984

Calliphoridae (Diptera en parches de Selva Pedemontana con distinto grado de intervención antrópica en Tucumán (Argentina

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Sofía M. OLEA

2012-01-01

Full Text Available En el noroeste de la Argentina, se encuentra la ecoregión de las Yungas, donde existe escasa información ecológica sobre Calliphoridae. El presente trabajo tuvo como objetivo ampliar el conocimiento sobre la riqueza, la composición y la abundancia de Calliphoridae en tres parches selváticos, en áreas con distinto grado de urbanización. Los muestreos se realizaron mensualmente desde noviembre de 2009 hasta mayo de 2010 en tres localidades: San Miguel de Tucumán (sitio urbano, Nueva Esperanza (sitio rural y El Taficillo (selva. Se registraron 8 especies: Lucilia cluvia (Walker, Lucilia sericata (Meigen, Lucilia sp., Chrysomya megacephala (Fabricius, Chrysomya albiceps (Wiedemann, Chrysomya putoria (Wiedemann, Paralucilia pseudolyrcea (Mello y Calliphora nigribasis Macquart. Para las especies más abundantes, se calculó el Índice de Sinantropía (IS. La asociación entre la abundancia de las especies y los sitios fue examinada mediante un Análisis de Componentes Principales (ACP. Lucilia cluvia fue dominante en todos los sitios y muestras, con una leve predominancia hacia sectores menos afectados por la urbanización. Los resultados del presente estudio reflejan la composición de los ensambles de Calliphoridae representativos de la Selva Pedemontana de las Yungas de Tucumán, caracterizados por una fuerte dominancia de especies del genero Lucilia.

Oferta académica de la URACCAN en el nivel de grado para el quinquenio 2014-2018

Directory of Open Access Journals (Sweden)

Letisia Castillo

2013-12-01

Full Text Available Esta investigación tuvo como propósito adecuar la oferta académica de la URACCAN, basada en las realidades y necesidades de formación profesional en el nivel de grado de la Costa Caribe de Nicaragua para el quinquenio 2014-2018. Se desarrolló en las Regiones Autónomas, específicamente en los municipios donde la Universidad tiene presencia (Bluefields, Laguna de Perlas, Nueva Guinea, El Coral, Almendro, San Miguelito, Siuna, Rosita, Bonanza, Waslala, Bilwi y Waspam. Se trabajó con los estudiantes finalistas de Secundaria (undécimo grado de todos los centros educativos, incluyendo a los directores de estos colegios. Asimismo, se entrevistaron a autoridades territoriales, gobiernos municipales y regionales. Participaron en el estudio los principales empleadores de nuestros graduados/graduadas de las diferentes carreras, los que dirigen las principales instituciones de gobierno regional, municipal y central, así como el análisis de la Estrategia de Desarrollo de la Costa Caribe y el Plan Nacional de Desarrollo del País.Las carreras más demandadas para ser ofertadas e implementadas en los cuatro Recintos son: Medicina Intercultural, Ingeniería Civil, Ingeniería en Sistema, Derecho con énfasis en Derecho Autonómico y Administración de Empresas. La oferta académica de la Universidad cubre algunas áreas en la formación de profesionales de la estrategia en desarrollo de la Costa Caribe; pero, otras quedan pendientes como: Ordenamiento territorial, seguridad alimentaria, agua y saneamiento, convivencia comunitaria y administración de justicia, protección de los bosques y los ecosistemas, transporte (canal intercostero, construcción de carreteras, energía renovable y agua (hidroeléctricas y  agroforestería comunitaria, por lo que estas deben ser parte fundamental en la nueva oferta académica que llevará a cabo la Universidad en el próximo quinquenio.SummaryThis research was aimed to adjust URACCAN academic offer, based on the

The island of Elba (Tuscany, Italy) at the crossroads of ancient trade routes: an archaeometric investigation of dolia defossa from the archaeological site of San Giovanni

Science.gov (United States)

Manca, Rosarosa; Pagliantini, Laura; Pecchioni, Elena; Santo, Alba P.; Cambi, Franco; Chiarantini, Laura; Corretti, Alessandro; Costagliola, Pilario; Orlando, Andrea; Benvenuti, Marco

2016-12-01

Dolia are large pottery containers used in Roman times for the storage and fermentation of wine. They were produced in specialized pottery workshops ( figlinae) and were typically marked with specific epigraphical stamps, which represent a major tool to unravel their provenance and trade. In this work we present the preliminary results of a study of two dolia defossa, recently found at San Giovanni (Portoferraio, island of Elba, Italy) during 2012-2014 archaeological excavations in a Roman farm (late 2nd cent. BC-1st cent. AD), devoted to wine production and probably constituting the antecedent archaeological phase of the adjacent "Villa delle Grotte". Based on archaeological (epigraphic) evidence, five different production areas have been hypothesized: 1) Elba island, where the dolia have been found; 2) the municipal figlinae in the Pisa territory; 3) the middle catchment of the Tiber river (central Latium) where "urban" figlinae occurred; 4) the figlinae of Minturno (southern Latium), a locality known both for wine production and exportation and for the presence of ancient figlinae; 5) the municipal figlinae in the Volterra territory. Archaeometric analysis of tempering agents intentionally added to the clay for the manufacturing of the dolia, particularly magmatic lithic fragments and clinopyroxene crystals, allowed us to suggest that the watershed of the central Tiber Valley - including different volcanic centres belonging to both Tuscany Magmatic Province (Monti Cimini) and Roman Magmatic Province (Monti Vulsini and Vico volcano) - could have been the most likely sites of production of the dolia found at San Giovanni. Alternatively, the site of Minturno (southern Latium) could be proposed.

77 FR 34984 - Notice of Intent To Repatriate a Cultural Item: San Diego Museum of Man, San Diego, CA

Science.gov (United States)

2012-06-12

...The San Diego Museum of Man, in consultation with the appropriate Indian tribes, has determined that a cultural item meets the definition of unassociated funerary object and repatriation to the Indian tribes stated below may occur if no additional claimants come forward. Representatives of any Indian tribe that believes itself to be culturally affiliated with the cultural item may contact the San Diego Museum of Man.

Development of long-lived radionuclide transmutation technology - Development of a code system for core analysis of the transmutation reactors

Energy Technology Data Exchange (ETDEWEB)

Cho, Nam Zin; Kim, Yong Hee; Kim, Tae Hyung; Jo, Chang Keun; Park, Chang Je [Korea Advanced Institute of Science and Technology, Taejon (Korea, Republic of)

1996-07-01

The objective of this study is to develop a code system for core analysis= of the critical transmutation reactors utilizing fast neutrons. Core characteristics of the transmutation reactors were identified and four codes, HANCELL for pincell calculation, PRISM and AFEN-H3D for core calculation, and MA{sub B}URN for depletion calculation, were developed. The pincell calculation code is based on one-dimensional collision probability method and may provide homogenized/condensed parameters of a pincell and also can homogenize the control assembly via a nonlinear iterative method. The core calculation codes, PRISM and AFEN-H3D, solve the multi-group, multi-dimensional neutron diffusion equations for a hexagonal geometry and they are based on the finite difference method and analytic function expansion nodal (AFEN) method, respectively. The MA{sub B}URN code san analyze the behavior of actinides and fission products in a reactor core. Through benchmarking, we confirmed that the newly developed codes provide accurate solutions. 30 refs., 10 tabs., 8 figs. (author)

San Marco C-2 (San Marco-4) Post Launch Report No. 1

Science.gov (United States)

1974-01-01

The San Marco C-2 spacecraft, now designated San Marco-4, was successfully launched by a Scout vehicle from the San Marco Platform on 18 February 1974 at 6:05 a.m. EDT. The launch occurred 2 hours 50 minutes into the 3-hour window due co low cloud cover at the launch site. All spacecraft subsystems have been checked and are functioning normally. The protective caps for the two U.S. experiments were ejected and the Omegatron experiment activated on 19 February. The neutral mass spectrometer was activated as scheduled on 22 February after sufficient time to allow for spacecraft outgassing and to avoid the possibility of corona occurring. Both instruments are performing properly and worthwhile scientific data is being acquired.

TRIGA 14 MW Research Reactor Status and Utilization

International Nuclear Information System (INIS)

Barbos, D.; Ciocanescu, M.; Paunoiu, C.

2016-01-01

neutron beams are used for investigation of materials properties and components produced or under development for applications in the energy sector, mainly for fission and fusion. At the TRIGA 14 MW reactor a neutron diffractometer and a SANS device are available for material residual stress and texture measurement. (author)

RECURSOS MULTIMEDIA PARA EL APRENDIZAJE DE CONTABILIDAD FINANCIERA EN LOS GRADOS BILINGÜES

Directory of Open Access Journals (Sweden)

María del Mar Camacho Miñano

2016-01-01

Full Text Available En el entorno educativo actual se hacen necesarias estrategias que mejoren la calidad de la docencia con la finalidad de aumentar el aprendizaje signifi - cativo del alumno. De hecho, una de las preocupaciones que tiene la univer - sidad para adaptarse al Espacio Europeo de Educación Superior (EEES es el distanciamiento entre la vida real y la teoría académica. En este artículo se presentan los resultados obtenidos, tras el diseño a través de un proyecto de innovación docente, sobre la utilización en las aulas de recursos multimedia (videos, tests, ejercicios prácticos relacionados, casos particulares, trabajos en equipo colaborativo, blog, lecturas... realizados «ad hoc» por profesores del Departamento de Economía Financiera y Contabilidad II de la Universidad Complutense de Madrid. Como parte del estudio se ha realizado una encuesta a los alumnos de segundo curso de las asignaturas de «Financial Accoun - ting II» del Grado de Administración y Dirección de Empresas (GADE y de «Analytical Accounting» del Grado de Economía (GECO donde expresaron su percepción y motivación al aprendizaje de la asignatura. Los resultados se han tratado estadísticamente obteniendo conclusiones muy interesantes. La mayoría de los alumnos han encontrado los videos útiles, satisfactorios y motivadores, aunque complejos. Por otro lado, se ha conseguido el objetivo de realizar un primer acercamiento al mundo profesional de la empresa a los alumnos desde su segundo año de carrera. Al tratarse de Grados bilingües, se han grabado a profesionales de importantes empresas españolas en inglés. Todo ello sirve de estímulo al estudiante que, en el futuro, puede conseguir al - canzar dichos puestos de responsabilidad. Además, el profesor dispone de un material que se ajusta perfectamente a la metodología docente activa y a sus necesidades, porque ha participado directamente en su diseño y realización.

Loss of Power and Water Hammer Event at San Onofre, Unit 1, on November 21, 1985

International Nuclear Information System (INIS)

1986-01-01

On November 21, 1985, Southern California Edison's Onofre Nuclear Generating Station, Unit 1, located south of San Clemente, California, experienced a partial loss of inplant ac electrical power while the plant was operating at 60% power. Following a manual reactor trip, the plant lost all inplant ac power for 4 minutes and experienced a severe incidence of water hammer in the feedwater system which caused a leak, damaged plant equipment, and challenged the integrity of the plant's heat sink. The most significant aspect of the event involved the failure of five safety-related check valves in the feed-water system whose failure occurred in less than year, without detection, and jeopardized the integrity of safety systems. The event involved a number of equipment malfunctions, operator errors, and procedural deficiencies. This report documents the findings and conclusions of an NRC Incident Investigation Team sent to San Onofre by the NRC Executive Director for Operations in conformance with NRC's recently established Incident Investigation Program

Relación entre el grado de infección por Streptococcus mutans y la posterior actividad cariogénica

Directory of Open Access Journals (Sweden)

Estela Gispert Abreu

2000-12-01

Full Text Available Se valoró la correspondencia entre el grado de infección por Streptococcus mutans y la actividad cariogénica, para lo cual se estudiaron 355 niños entre 7 y 14 años seleccionados por muestreo estratificado de conglomerados. Se les determinó el grado de infección en saliva en técnica basada en la adherencia de este microorganismo, a la vez que se estableció la prevalencia y la incidencia de caries al año y a los 2 años. Los resultados demostraron que los niños con alto grado de infección tuvieron al año el 60 % de afectación por caries y una incidencia de 1,3. Se evidenció una diferencia significativa en relación con los de bajo grado de infección (X2 = p The relationship between the degree of infection caused by Streptococcus mutans and the cariogenic activity was evaluated by studying 355 children aged 7-14 selected by stratified cluster sampling. The infection degree in saliva was determined by using a technique based on the adherence of this microorganism. The prevalence and incidence of caries was established at one year and at two years. The results showed that children with a high infection degree had at one year 60 % of affectation by caries and an incidence of 1.3. A significant difference was observed in relation to those with low infection degree (X2 = p <0.001 and r = 0.11. Two years later, children with a high infection degree developed 83.5 % of affectation and an incidence of 2.9, which represented a marked difference in comparison with the children with low infection and caries activity. This study may be of considerable value in the prognosis of risk for caries.

El peso de la Contabilidad en el Grado de Administración y Dirección de Empresas

Directory of Open Access Journals (Sweden)

José Antonio Cavero-Rubio

2013-01-01

Los resultados obtenidos determinan cómo se ha visto modificada la formación general y en Contabilidad de los estudiantes, tanto en el ámbito nacional como individual por universidades, consecuencia de las diferentes reformas de los planes de estudio. En el diagnóstico de las causas o factores que pueden haber influido en el peso de la Contabilidad en el nuevo grado, se ha procedido a efectuar un análisis empírico a través de un modelo ANCOVA. Los resultados obtenidos ponen de manifiesto que las variables Departamento de Contabilidad y Licenciatura en Empresariales tienen una influencia estadística significativa en el peso de la Contabilidad en el Grado en Administración y Dirección de Empresas.

Description of gravity cores from San Pablo Bay and Carquinez Strait, San Francisco Bay, California

Science.gov (United States)

Woodrow, Donald L.; John L. Chin,; Wong, Florence L.; Fregoso, Theresa A.; Jaffe, Bruce E.

2017-06-27

Seventy-two gravity cores were collected by the U.S. Geological Survey in 1990, 1991, and 2000 from San Pablo Bay and Carquinez Strait, California. The gravity cores collected within San Pablo Bay contain bioturbated laminated silts and sandy clays, whole and broken bivalve shells (mostly mussels), fossil tube structures, and fine-grained plant or wood fragments. Gravity cores from the channel wall of Carquinez Strait east of San Pablo Bay consist of sand and clay layers, whole and broken bivalve shells (less than in San Pablo Bay), trace fossil tubes, and minute fragments of plant material.

78 FR 34123 - Notice of Inventory Completion: San Francisco State University NAGPRA Program, San Francisco, CA

Science.gov (United States)

2013-06-06

... completion of an inventory of human remains and associated funerary objects under the control of the San....R50000] Notice of Inventory Completion: San Francisco State University NAGPRA Program, San Francisco, CA... NAGPRA Program has completed an inventory of human remains and associated funerary objects, in...

78 FR 21403 - Notice of Inventory Completion: San Francisco State University NAGPRA Program, San Francisco, CA

Science.gov (United States)

2013-04-10

... completion of an inventory of human remains and associated funerary objects under the control of the San....R50000] Notice of Inventory Completion: San Francisco State University NAGPRA Program, San Francisco, CA... NAGPRA Program has completed an inventory of human remains and associated funerary objects, in...

76 FR 6517 - San Luis & Rio Grande Railroad-Petition for a Declaratory Order

Science.gov (United States)

2011-02-04

... DEPARTMENT OF TRANSPORTATION Surface Transportation Board [Docket No. FD 35380] San Luis & Rio... petition filed by San Luis & Rio Grande Railroad (SLRG), the Board instituted a declaratory order... proposed operation of a truck-to-rail transload facility in Antonito, Colorado. See San Luis & Rio Grande R...

Calculations with THYDE-B1 for the test PO-SB-7 in PIPER-1, Pisa, Italy

International Nuclear Information System (INIS)

Sonneck, G.; Pfau, H.

1988-01-01

The test PO-SB-7 from the BWR test facility PIPER-1 in Pisa, Italy, was chosen as the International Standart Problem (ISP) 21 by CSNI, OECD. The Department for Energy and Engineering is participating in this exercise. This report describes the input and the calculations using the Japanese code THYDE-B1. As the experiment has not yet been run the results can only be compared to counterpart test in USA and Japan. They seem to be reasonable. Additionally THYDE-B1 proves to have advantages over similar codes. 10 refs., 8 figs., 4 tabs. (Author)

LA ESTRUCTURA DE LA FORMACIÓN GENERAL EN EL CURRÍCULUM BÁSICO DE LOS SISTEMAS EDUCATIVOS MODERNOS. UNA PROPUESTA DE ENCUADRAMIENTO TEÓRICO-EDUCATIVO DE PISA

Directory of Open Access Journals (Sweden)

Dietrich Benner

2009-01-01

Full Text Available El presente trabajo desarrolla un encuadramiento teórico-educativo de PISA fundado en la estructura de la formación general en los sistemas educativos modernos. Se intentará mostrar que en el centro de la investigación didáctica y escolar de las ciencias de la educación existe una relación de implicación entre la enseñanza, la didáctica, el desarrollo del currículum y la medición del rendimiento, que debe tenerse en cuenta en la investigación escolar. Por último se identificarán algunas desideratas en cuanto al diseño investigativo de PISA y se plantearán a continuación cuestionamientos de considerable significación para el desarrollo ulterior de la investigación comparada del rendimiento escolar y la discusión de sus resultados.

GRADO DE SECADO Y EFICIENCIA TÉRMICA DE UN SECADOR DE TORNILLO TRANSPORTADOR DRYING

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MANUEL ALEJANDRO TRIANA

2011-01-01

Full Text Available En un secador tipo tornillo transportador (SCD, se evaluó el grado de secado y la eficiencia térmica en el secado de acetato de calcio dihidratado. El SCD tiene 8.66 m de longitud y 0.17 m de diámetro del tornillo. Las variables del diseño factorial (niveles mixtos 2x3 2 fueron: la velocidad rotacional del tornillo (N en dos niveles, la temperatura (T del sólido alimentado en tres niveles y el flujo de alimentación (C en tres niveles. Durante los experimentos la humedad inicial del sólido estuvo entre 5070%, obteniéndose grados de secado hasta del 14 % y eficiencias térmicas hasta del 88%. A partir de las superficies de respuesta de los anovas obtenidos en StatGraphics 5.1, se realizó la optimización simultánea de las dos variables de respuesta. Usando el concepto de diseño desbalanceado se encontró el óptimo global (45 ºC, 8 L/min y 3 rpm, que coincide con el óptimo observado.

El papel docente ante las emociones de niñas y niños de tercer grado

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Mónica Calderón Rodríguez

2014-01-01

Full Text Available En este artículo se presentan los resultados de una investigación realizada durante los años 2011-2012, cuyo objetivo fue analizar el papel del personal docente ante las emociones que manifiestan en el aula las niñas y los niños de tercer grado de dos escuelas urbanas de la provincia de San José. La investigación se fundamenta en la identificación de los conocimientos, habilidades, estrategias y recursos utilizados por el personal docente ante las diferentes emociones que manifiesta el estudiantado en el aula. La metodología de la investigación se dio bajo un enfoque mixto, por lo que el trabajo se dividió en una fase cualitativa y otra cuantitativa; en cada una se aplicaron diferentes instrumentos con base en los objetivos de la investigación; posteriormente se realizó una integración de ambos enfoques, para ampliar la perspectiva de las respuestas del personal docente ante las emociones que experimentan las niñas y los niños en el aula. A partir de los resultados obtenidos se identifican elementos facilitadores y obstaculizadores del quehacer docente, sobre las emociones de sus estudiantes y se logra constatar una deficiencia en el profesional en educación en cuanto al conocimiento de la temática, la falta de estrategias aplicables a las emociones de sus estudiantes, la poca información y actualización que se tiene en cuanto a la educación emocional en las aulas. This article presents the results of a research conducted over the years 2011-2012, in which the role of teachers in the face of the emotions felt in the classroom by third graders in two urban schools of the province of San José was analyzed. The research was based on the identification of the knowledge, skills, strategies and resources used by teachers as a response to different emotions that children manifest in the classroom.. The research methodology was developed under a mixed approach, therefore it was divided in a qualitative and a quantitative phase. In

Effects of irradiation at lower temperature on the microstructure of Cr-Mo-V-alloyed reactor pressure vessel steel

Energy Technology Data Exchange (ETDEWEB)

Grosse, M; Boehmert, J; Gilles, R [Hahn-Meitner-Institut Berlin GmbH (Germany)

1998-10-01

The microstructural damage process due to neutron irradiation [1] proceeds in two stages: - formation of displacement cascades - evolution of the microstructure by defect reactions. Continuing our systematic investigation about the microstructural changes of Russian reactor pressure vessel steel due to neutron irradiation the microstructure of two laboratory heats of the VVER 440-type reactor pressure vessel steel after irradiation at 60 C was studied by small angle neutron scattering (SANS). 60 C-irradiation differently changes the irradiation-induced microstructure in comparison with irradiation at reactor operation temperature and can, thus, provide new insights into the mechanisms of the irradiation damage. (orig.)

LA VARIABILIDAD GENÉTICA DE LA Persea americana M.: UN ESTUDIO SOBRE LA ENSEÑANZA DE LA BIOLOGÍA MOLECULAR DESDE EL LABORATORIO EN GRADO 10°

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Carlos Miguel Monsalve Agudelo

2015-12-01

Full Text Available El presente artículo, expone el trabajo realizado en desarrollo de proyecto de grado de maestría, con estudiantes de la I.E. San Fernando de Amagá, Antioquia, en el periodo comprendido entre Julio de 2013 y junio de 2014, en la línea de profundización de la enseñanza de la biología molecular. Para la ejecución del trabajo se tomaron como base dos grupos, uno control y uno experimental, en los cuales se aplicó un ciclo de aprendizaje a través de videos sobre variabilidad genética explicada en la expedición de Darwin, situaciones problema, clases magistrales y trabajos de campo como la diferenciación de especies vegetales a partir de características morfológicas. En el grupo experimental se introdujo el trabajo de laboratorio como base de la enseñanza de la variabilidad genética desde la biología molecular. Desde el punto de vista pedagógico, se considera que la intervención permitió un avance en el proceso de aprendizaje de los estudiantes en el acercamiento a los contenidos conceptuales, procedimentales y actitudinales referentes a la variabilidad genética. Así mismo desde el aspecto biológico, se determinó la variabilidad genética del aguacate en el municipio de Amagá, al resultar diferente dos de las muestras en la prueba del gel electroforesis PCR-RFLPs para 6 muestras de plantas de Aguacate con marcador de 50pb.

Investigation for calculation methods used in analyzing the physics characteristics of nuclear power reactor

International Nuclear Information System (INIS)

Nguyen Tuan Khai; Hoang Van Khanh; Phan Quoc Vuong; Tran Viet Phu; Tran Vinh Thanh; Nguyen Thi Mai Huong; Nguyen Thi Dung; Le Tran Chung; Nguyen Minh Tuan; Tran Quoc Duong

2014-01-01

The project aims at nuclear human resource development and enhancement in research capability in reactor physics and kinetics at Nuclear Energy Center (Institute for Nuclear Science and Technology) and Nuclear Reactor Center (Nuclear Research Institute, Dalat). The main research items of the project can be summarized as follows: i) Considering possibility on using modern calculation techniques and methods in investigating neutronic characteristics and neutronics-thermal hydraulics coupling. This item is proposed to carry out based on international collaboration with Prof. Le Trong Thuy, San Jose University, US; ii) Carrying out the collaborative activities in research and training between Nuclear Energy Center (Institute for Nuclear Science and Technology) and Nuclear Reactor Center (Nuclear Research Institute, Dalat); iii) Opening two-week training course on nuclear reactor engineering (25 Nov - 12 Dec 2013) in collaboration with Japan Atomic Energy Agency (JAEA). (author)

Performance of BATAN-SANS instrument

Energy Technology Data Exchange (ETDEWEB)

Ikram, Abarrul; Insani, Andon [National Nuclear Energy Agency, P and D Centre for Materials Science and Technology, Serpong (Indonesia)

2003-03-01

SANS data from some standard samples have been obtained using BATAN-SANS instrument in Serpong. The experiments were performed for various experimental set-ups that involve different detector positions and collimator lengths. This paper describes the BATAN-SANS instrument briefly as well as the data taken from those experiments and followed with discussion of the results concerning the performance and calibration of the instrument. The standard samples utilized in these experiments include porous silica, polystyrene-poly isoprene, silver behenate, poly ball and polystyrene-poly (ethylene-alt-propylene). Even though the results show that BATAN-SANS instrument is in good shape, but rooms for improvements are still widely open especially for the velocity selector and its control system. (author)

SAN MICHELE. ENTRE CIELO Y MAR / San Michele, between sky and sea

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Pablo Blázquez Jesús

2012-11-01

Full Text Available RESUMEN El cementerio es uno de los tipos arquitectónicos más profundos y metafóricos. El concurso para la ampliación del cementerio de San Michele, convocado en 1998 por la administración Municipal de Venecia, se convierte en un excelente campo de pruebas sobre el que poder analizar el contexto histórico en torno a esta tipología, y su relación con la ciudad y el territorio. El estudio de este caso concreto nos permite descubrir personajes, relaciones casuales y hallazgos que se despliegan a lo largo del texto. La historia del cementerio de San Michele es también la crónica de la transformación de la ciudad de Venecia y su Laguna. Interpretando este concurso como un instrumento de investigación, el objetivo del artículo es el de comprender la realidad contemporánea de la arquitectura funeraria a través de la isla de San Michele, Venecia, y las propuestas finalistas de Carlos Ferrater, Enric Miralles y David Chipperfield. Una historia bajo la cual se vislumbran claves que nos sirven para reflexionar acerca del cementerio contemporáneo, la ciudad y el territorio. SUMMARY The cemetery is one of the most profound and metaphorical kinds of architecture. The competition for the extension of the San Michele Cemetery, called in 1998 by the Venice municipal administration, is an excellent testing ground on which to analyse the historical context surrounding this type of architecture, and its relationship with the city and the region. The study of this particular case allows us to uncover characters, casual relationships and findings that unfold throughout the text. The history of the San Michele cemetery is also the chronicle of the transformation of the city of Venice and its Lagoon. Interpreting this competition as a research tool, the aim of the paper is to understand the contemporary reality of funerary architecture through the island of San Michele, Venice, and the finalist proposals of Carlos Ferrater, Enric Miralles and David

Pleistocene Brawley and Ocotillo Formations: Evidence for initial strike-slip deformation along the San Felipe and San Jacinto fault zonez, Southern California

Science.gov (United States)

Kirby, S.M.; Janecke, S.U.; Dorsey, R.J.; Housen, B.A.; Langenheim, V.E.; McDougall, K.A.; Steeley, A.N.

2007-01-01

We examine the Pleistocene tectonic reorganization of the Pacific-North American plate boundary in the Salton Trough of southern California with an integrated approach that includes basin analysis, magnetostratigraphy, and geologic mapping of upper Pliocene to Pleistocene sedimentary rocks in the San Felipe Hills. These deposits preserve the earliest sedimentary record of movement on the San Felipe and San Jacinto fault zones that replaced and deactivated the late Cenozoic West Salton detachment fault. Sandstone and mudstone of the Brawley Formation accumulated between ???1.1 and ???0.6-0.5 Ma in a delta on the margin of an arid Pleistocene lake, which received sediment from alluvial fans of the Ocotillo Formation to the west-southwest. Our analysis indicates that the Ocotillo and Brawley formations prograded abruptly to the east-northeast across a former mud-dominated perennial lake (Borrego Formation) at ???1.1 Ma in response to initiation of the dextral-oblique San Felipe fault zone. The ???25-km-long San Felipe anticline initiated at about the same time and produced an intrabasinal basement-cored high within the San Felipe-Borrego basin that is recorded by progressive unconformities on its north and south limbs. A disconformity at the base of the Brawley Formation in the eastern San Felipe Hills probably records initiation and early blind slip at the southeast tip of the Clark strand of the San Jacinto fault zone. Our data are consistent with abrupt and nearly synchronous inception of the San Jacinto and San Felipe fault zones southwest of the southern San Andreas fault in the early Pleistocene during a pronounced southwestward broadening of the San Andreas fault zone. The current contractional geometry of the San Jacinto fault zone developed after ???0.5-0.6 Ma during a second, less significant change in structural style. ?? 2007 by The University of Chicago. All rights reserved.

Exploring Primary Student’s Problem-Solving Ability by Doing Tasks Like PISA's Question

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Rita Novita

2012-07-01

Full Text Available Problem solving plays an important role in mathematics and should have a prominent role in the mathematics education. The term “problem solving” refers to mathematics tasks that have the potential to provide intellectual challenges for enhancing students’ mathematical understanding and development. In addition, the contextual problem that requires students to connect their mathematical knowledge in solving mathematical situational problem is believed to be an impact on the development students’ problem-solving ability. The tasks that have been developed by PISA meet both of these criteria. As stated by the NCTM, that problem-solving skill and ability should be developed to students when they were in primary school (K5-8, therefore, it is important to do an effort to guide students in developing problem-solving ability from primary school such as accustom students to do some mathematical solving-problem tasks. Thus, in this research we tried to investigate how to develop mathematical problem-solving tasks like PISA’s question that have potential effect toward students’ mathematical problem-solving abilities?. We used a  formative evaluation type of development research as an mean  to achieve this research goal. This type of research is conducted in two steps, namely preliminary stage and formative evaluation stage covering self evaluation, prototyping (expert reviews, one-to-one, and small group, and  field test. This research involve four primary schools in Palembang, there are SD Muhammadiyah 6 Palembang, MIN 1 & MIN 2 Palembang, and SDN 179 Palembang. The result of this research showed that the mathematical problem-solving tasks  that have been developed have potential effect in exploring mathematical problem-solving ability of the primary school students. It  is shown from their work in solving problem where all of the indicators of problem solving competency have emerged quite well category. In addition, based on interview

Provenance of marbles used for building the internal spiral staircase of the bell tower of St. Nicholas Church (Pisa, Italy)

Science.gov (United States)

Lezzerini, Marco; Antonelli, Fabrizio; Gallello, Gianni; Ramacciotti, Mirco; Parodi, Luca; Alberti, Antonio; Pagnotta, Stefano; Legnaioli, Stefano; Palleschi, Vincenzo

2017-05-01

The aim of this study is to investigate the provenance of marbles used as architectural elements (bases, shafts and capitals of columns) for building the internal spiral staircase of the medieval bell tower of St. Nicholas Church at Pisa, Italy. Accordingly, the 45 collected marble samples have been analysed by optical microscopy, X-ray powder diffraction and mass spectroscopy for carbon and oxygen stable isotope ratio analysis; additionally, SEM-EDS analysis have been performed to complement data about accessory minerals. By comparison with literature data on the main sources of the white Mediterranean marbles used in ancient times, the results show that the analysed samples are mainly white crystalline marbles from Carrara (Italy) and, subordinately, from other Tuscan and Eastern Mediterranean quarrying areas. In fact, Mt. Pisano and Campiglia M.ma (Tuscany, Italy) and Marmara (Turkey), Paros, Mt. Penteli, Thasos (Greece) are minor sources. The other coloured stones identified on the strength of their macroscopic features are quartzites from Mt. Pisano area and granitoids from Sardinia and Island of Elba (Italy). Occasionally, a very limited number of architectonical elements made up of Acquabona limestone from Rosignano Marittimo (Livorno, Italy), red limestone with ammonites (the so-called "Rosso Ammonitico") and black limestone belonging to the Tuscan Nappe sequence, outcropping at northwest of Pisa in the nearby Monti d'Oltre Serchio area, are present.

Analysis of Student and School Level Variables Related to Mathematics Self-Efficacy Level Based on PISA 2012 Results for China-Shanghai, Turkey, and Greece

Science.gov (United States)

Usta, H. Gonca

2016-01-01

This study aims to analyze the student and school level variables that affect students' self-efficacy levels in mathematics in China-Shanghai, Turkey, and Greece based on PISA 2012 results. In line with this purpose, the hierarchical linear regression model (HLM) was employed. The interschool variability is estimated at approximately 17% in…

Catálogo de Radio-Fuentes Opticas con Astrolabio Fotoeléctrico PAII

Science.gov (United States)

Manrique, W. T.; Podestá, R. C.; Alonso, E.; Actis, E. V.; Pacheco, A. M.; Bustos, G.; Lizhi, L.; Zezhi, W.; Fanmiao, Z.; Hongqi, W.; Perdomo, R.

Usando los datos observados en San Juan con el Astrolabio Fotoeléctrico PAII desde Febrero de 1992 hasta Marzo de 1997, se ha realizado el Catálogo de Radio-Fuentes Opticas de San Juan conteniendo 69 estrellas. Las observaciones de las posiciones de las radio-fuentes están realizadas para la época y equinoccio J2000,0 y en un sistema cercano al del FK5. Las precisiones medias son ± 2,2 ms y ± 0,"035 en ascensión recta y declinación respectivamente. Las magnitudes de las estrellas son desde 0,9 a 10,7 . Las declinaciones son desde --2,5 grados a --60 grados. La época media es 1995,1. Se muestran también los resultados comparados con el Catálogo Hiparcos.

PISA 2012 Analysis of School Variables Affecting Problem-Solving Competency: Turkey-Serbia Comparison

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Emine YAVUZ

2017-12-01

Full Text Available According to the OECD's PISA 2012 Turkey problem-solving report, Turkey and Serbia are at the same mathematical literacy level. However, Serbia's average of problem-solving competency is said to be higher than Turkey's. In this study, school variables that affect problem-solving competency of the two countries were examined and compared. The method of the study was causal comparison method, and HLM analysis was performed on data of 4494 students from 147 schools in Turkey sample and 4059 students from 132 schools in Serbia sample separately. As a result of HLM analysis, "obstacle and family donation" variable for Serbia and "abandon, teacher morale and mathematics competition" variable for Turkey were statistically significant. Although it was found that for each countries different variables influence the problem-solving competency, it was quite remarkable that these variables are in common in that they are components of the school climate concept.

Appello Catania - sezione lavoro Sent. 27. X. 2011 n. 933sull'improcedibilità del giudizio di primo grado

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Calogero Massimo Cammalleri

2012-01-01

Full Text Available Lavoro (controversie di- ricorso di primo grado – noti­ficazione - inesistenza materiale o giuridica - conseguen­ze - assegnazione di un nuovo termine – sanatoria – esclusione. *L’omessa notificazione del ricorso introduttivo del giudizio di primo grado e del pedissequo decreto di fissazione dell’udien­za, impone al giudice di dichiarare l’improcedibilità del ricor­so definendo il giudizio con una sentenza di mero rito non po­tendo più il processo proseguire per non essere consentita - in ragione del principio costituzionalizzato della "ragionevole durata" del processo - la fissazione di un nuovo termine per la notificazione del ricorso e del decreto di fissazione dell'udien­za, mai in precedenza effettuata, attesa l’inapplicabilità in tal caso degli artt. 291 e 421 c.p.c. * massima a cura della redazione

Estudio del grado de secuela en la contingencia profesional según los diferentes estamentos involucrados dentro de la legislación laboral

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Luis Jesús Sánchez-Elvira Muñoz

Full Text Available El estudio de 2367 casos de MC-Mutual, que por contingencia profesional han sido alta en el año 2007, con tramitación de informe-propuesta clínico-laboral. El mayor grado de coincidencia está entre el Juzgado de la Social (JS y el Tribunal Superior de Justicia (TSJ, siendo del 89,28%, seguido de la mutua con el INSS con un 81,59%. Hay diferencias en la valoración del grado de secuela por los diferentes estamentos. La menor coincidencia entre la Mutua y el INSS está en la incapacidad permanente parcial.

Computación evolutiva de bosques de expansión mínimos con restricción de grado y de rol

OpenAIRE

Antón Sánchez, Laura

2015-01-01

Encontrar el árbol de expansión mínimo con restricción de grado de un grafo (DCMST por sus siglas en inglés) es un problema NP-complejo ampliamente estudiado. Una de sus aplicaciones más importantes es el dise~no de redes. Aquí nosotros tratamos una nueva variante del problema DCMST, que consiste en encontrar el árbol de expansión mínimo no solo con restricciones de grado, sino también con restricciones de rol (DRCMST), es decir, a~nadimos restricciones para restringir el rol ...

The struggle of ideas in Danish primary school policy in the wake of PISA

DEFF Research Database (Denmark)

Gustafsson, Line

change came as liberals contested the existing policies based on the ideas of progressive education as cause of the policy failure illuminated by the PISA investigations. As proponents of competitive education they pointed to the lack of accountability and argued for the need of measurable targets...... policy by investigating how the policy of national tests was adopted by focusing on the main actors the parties of Venstre and the Social democrats. The research question this paper seeks to answer is the following: what caused primary school policy to change? Extending over a decade or more, Danish...... and tests to monitor development. However, before policies of national tests were adopted a battle of problem definition and subsequently battles of policy solutions were fought with the social democrats which initially adhered to the ideas of progressive education. It is argued that only by knowing...

Proof, interpretation and evaluation of radiation-induced microstructural changes in WWER reactor pressure vessel steels

International Nuclear Information System (INIS)

Boehmert, J.; Gokhman, A.; Grosse, M.; Ulbricht, A.

2003-06-01

Neutron embrittlement is a special issue for the VVER-type reactors. One of the fundamentals for a reliable assessment of the current material state is knowledge of the causes and mechanisms of neutron embrittlement. The aim of the project is to understand and to quantify the microstructural appearances due to neutron radiation in VVER-type reactor pressure vessel steels. The material base is a broad variation of irradiation probes taken from the irradiation programme Rheinsberg, surveillance programmes of Russian, Ukrainian or Hungarian NPPs or irradiation experiments with mockup-alloys. The microstructure was investigated by different methods. The small angle neutron scattering (SANS) proved to be the most suitable method. A procedure was developed to determine mean diameter, size distribution and volume fraction of irradiation-induced microstructure from SANS experiments in a reliable and comparable manner. With this method microstructural parameters were systematically determined and the main factors of influence were identified. Apart from the neutron fluence the volume fraction of radiation defects mainly changes with the copper or nickel content whereas phosphorus is hardly relevant. Annealing remedies the radiation-induced microstructural appearances. The ratio between nuclear and magnetic neutron scattering provides information on the type of radiation defects. This leads to the conclusion that the material composition changes the radiation defects. The change occurs gradually rather than abruptly. The radiation defects detected by SANS correlate with the radiation hardening and embrittlement. Generally, the results suggest a bimodal mechanism due to radiation-enhanced and radiation-induced defect evolution. A kinetic model on base of the rate theory approach was established. (orig.)

77 FR 34988 - Notice of Inventory Completion: San Diego State University, San Diego, CA

Science.gov (United States)

2012-06-12

.... ACTION: Notice. SUMMARY: San Diego State University Archeology Collections Management Program has... that believes itself to be culturally affiliated with the human remains and associated funerary objects may contact San Diego State University Archeology Collections Management Program. Repatriation of the...

Tratamiento de las excretas de cerdo mediante un reactor anaeróbico SCFBR a nivel de banco Treatment of pig excreta using an SCFBR anaerobic reactor

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Caicedo Luis A.

1999-06-01

Full Text Available sans-serif";; mso-fareast-font-family: Calibri; mso-fareast-theme-font: minor-latin; mso-ansi-language: ES-CO; mso-fareast-language: EN-US; mso-bidi-language: AR-SA;" lang="ES-CO">Un nuevo reactor anaeróbico denominado Sludge Central Fixed Bed Reactor (SCFBR fue construido y evaluado para tratar los residuos líquidos de las granjas porcícolas. El SCFBR está constituido por tres zonas principales. Una zona inferior de lodos, seguida por un módulo empacado ubicado en forma concéntrica y, en la parte superior, una zona de separación sólido, líquido y gas. El reactor de 28,5 1 de volumen de reacción fue evaluado durante 210 días para tres cargas orgánicas de 0,548, 0,421 y 1,239 g DQO/ 1 día. El SCFBR fue alimentado inicialmente en forma discontinua con tiempos de retención hidráulicos (TRH de 10 y 10,7 días. Posteriormente el TRH fue disminuido a 3,87 días con una alimentación en continuo. Para las tres cargas orgánicas de 0,548, 0,421 y 1,239 g DQO/1 día se obtuvieron remociones en la demanda química de oxígeno (DQO de 68%, 81% y 73% y en los sólidos volátiles (SV, de 53,5%, 55,8% y 50,1%, respectivamente. El SCFBR presentó un buen desempeño, re-presentado en las eficiencias de remoción y en la estabilidad observada. Se presenta una microfotografía tomada de una muestra de lodo de la zona inferior del SCFBR, observándose una gran presencia de microorganismos del género Methanosaeta (Methanothrix.

sans-serif";; mso-ansi-language: EN-US;" lang="EN-US">A new anaerobic reactor called the Sludge Central Fixed Bed Reactor (SCFBR was built and evaluated for the treatment of liquid residue from the pig farms. The SCFBR has three main parts. The lower area is for sludge, the middle part consists of a concentrically

El urbanismo de Santiago de Compostela : un plano con las plazuelas de San Martín y de San Miguel de 1709

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Miguel Taín Guzmán

1998-01-01

Full Text Available El presente artículo está dedicado al estudio de un plano inédito de 1709 donde se representan las plazuelas de San Martín y de San Miguel, en el barrio intramuros de la Puerta de la Peña de Santiago de Compostela. Gracias al referido dibujo, analizo al detalle el entramado urbano de ambos espacios públicos y los edificios que los delimitan, particularmente la iglesia de San Martín Pinario, el desaparecido Palacio del Tribunal de la Santa Inquisición y la iglesia parroquial de San Miguel dos Agros.The article focuses on the study of a 1709 inpublished street plan of two squares —San Martín and San Miguel— in the Puerta de la Peña quarter (Santiago de Compostela. This oíd drawing shows the urban framework of both public spaces and also the buildings around: San Martín Pinario, the lost Palacio del Tribunal de la Santa Inquisición and the paroquial church of San Miguel de los Agros.

RENDIMIENTO, CALIDAD NUTRIMENTAL Y RENTABILIDAD DEL FRIJOL EJOTERO DE TEMPORAL EN SAN PABLO IXAYOC, MÉXICO

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Nicolás Salinas-Ramírez

2013-01-01

Full Text Available Una de las estrategias para elevar el rendimiento y la calidad nutricional en las regiones agrícolas es la búsqueda de cultivares con mayor adaptación a diferentes condiciones ambientales. El objetivo de este estudio fue caracterizar cultivares de frijol ejotero con base en su fenología, crecimiento, rendimiento, calidad nutricional y rentabilidad, en clima templado y condiciones de secano. Tres variedades de hábito de crecimiento determinado, ‘Opus’, ‘Strike’ y ‘Black Valentine’, y una de crecimiento indeterminado, ‘Hav-14’, fueron sembradas el 7 de mayo de 2008 en San Pablo Ixayoc, Estado de México, con densidad de 6.25 plantas·m -2 . Se encontraron diferencias en el ciclo biológico desde 90 a 199 días al último corte, así como en rendimiento y número de ejotes. Estas diferencias se relacionaron en mayor grado con la precipitación acumulada (PP, r = 0.83**, la evapotranspiración total del cultivo (ETc, r = 0.71* y unidades térmicas acumu - ladas (UC, r = 0.65*. La variedad Opus mostró el mayor porcentaje de minerales, fósforo, FDA, lignina, FDN y proteína. El ingreso neto más alto se obtuvo con ‘Opus’ y ‘Black Valentine’. No obstante, en un periodo de cinco años (vida media de la espaldera ‘Hav-14’ ofrece mayor ventaja desde el punto de vista económico. Estos resultados sugieren que ‘Hav-14’, ‘Opus’ y ‘Black Valentine’ serían los cultivares más apropiados para lograr mayor producción bajo condiciones de lluvia estacional en el clima templado de San Pablo Ixayoc.

Estabelecimento de uma cultura de tardígrados limno-terrestres em laboratório e desenvolvimento de metodologias alternativas de desidratação de tardígrados

OpenAIRE

Pulschen, André Arashiro; Meneghin, Silvava Perissatto

2012-01-01

Tardígrados (Filo Tardigrada) são animais invertebrados conhecidos como ursos d’água, que existem em quase todas as localidades do planeta, encontrados do Ártico até a Antártida, alto do Himalaia até 6000 m de profundidade oceânica. A presença dos animais em ambientes tão diversos se deve à sua capacidade de entrar em criptobiose, estado induzido por condições adversas, no qual os animais sobrevivem à desidratação, temperaturas de -192 °C até acima de 100 °C, pressão de 7500 Pa, níveis de rad...

Evaluation of the integrity of SEP reactor vessels

International Nuclear Information System (INIS)

Hoge, K.G.

1979-12-01

A documented review is presented of the integrity of the 11 reactor pressure vessels covered in the Systematic Evaluation Program. This review deals primarily with the design specifications and quality assurance programs used in the vessel construction and the status of material surveillance programs, pressure-temperature operating limits, and inservice inspection programs of the applicable plants. Several generic items such as PWR overpressurization protection and BWR nozzle and safe-end cracking also are evaluated. The 11 vessels evaluated include Dresden Units 1 and 2, Big Rock Point, Haddam Neck, Yankee Rowe, Oyster Creek, San Onofre 1, LaCrosse, Ginna, Millstone 1, and Palisades

Selección Saccharomyces cerevisiae con baja producción de etanol para control del grado alcohólico en zonas cálidas

OpenAIRE

Morata Barrado, Antonio; Loira, Iris; Palomero Rodriguez, Felipe; Benito Saez, Santiago; Gonzalez Chamorro, M. Carmen; Suarez Lepe, Jose Antonio

2010-01-01

En la enología española existen muchas regiones en las que el clima favorece maduraciones sacarimétricas excesivas lo que supone que durante la fermentación se alcancen grados alcohólicos elevados. La levadura metaboliza el azúcar (glucosa y fructosa) por vía fermentativa produciendo como productos mayoritarios etanol y CO2. Sin embargo, no todas las levaduras alcanzan el mismo grado alcohólico para un mosto con una concentración de azúcares igual. Normalmente las variaciones son pequeñas y s...

78 FR 57482 - Safety Zone; America's Cup Aerobatic Box, San Francisco Bay, San Francisco, CA

Science.gov (United States)

2013-09-19

...-AA00 Safety Zone; America's Cup Aerobatic Box, San Francisco Bay, San Francisco, CA AGENCY: Coast Guard... America's Cup air shows. These safety zones are established to provide a clear area on the water for... announced by America's Cup Race Management. ADDRESSES: Documents mentioned in this preamble are part of...

Cataclastic rocks of the San Gabriel fault—an expression of deformation at deeper crustal levels in the San Andreas fault zone

Science.gov (United States)

Anderson, J. Lawford; Osborne, Robert H.; Palmer, Donald F.

1983-10-01

The San Gabriel fault, a deeply eroded late Oligocene to middle Pliocene precursor to the San Andreas, was chosen for petrologic study to provide information regarding intrafault material representative of deeper crustal levels. Cataclastic rocks exposed along the present trace of the San Andreas in this area are exclusively a variety of fault gouge that is essentially a rock flour with a quartz, feldspar, biotite, chlorite, amphibole, epidote, and Fe-Ti oxide mineralogy representing the milled-down equivalent of the original rock (Anderson and Osborne, 1979; Anderson et al., 1980). Likewise, fault gouge and associated breccia are common along the San Gabriel fault, but only where the zone of cataclasis is several tens of meters wide. At several localities, the zone is extremely narrow (several centimeters), and the cataclastic rock type is cataclasite, a dark, aphanitic, and highly comminuted and indurated rock. The cataclastic rocks along the San Gabriel fault exhibit more comminution than that observed for gouge along the San Andreas. The average grain diameter for the San Andreas gouge ranges from 0.01 to 0.06 mm. For the San Gabriel cataclastic rocks, it ranges from 0.0001 to 0.007 mm. Whereas the San Andreas gouge remains particulate to the smallest grain-size, the ultra-fine grain matrix of the San Gabriel cataclasite is composed of a mosaic of equidimensional, interlocking grains. The cataclastic rocks along the San Gabriel fault also show more mineralogiec changes compared to gouge from the San Andreas fault. At the expense of biotite, amphibole, and feldspar, there is some growth of new albite, chlorite, sericite, laumontite, analcime, mordenite (?), and calcite. The highest grade of metamorphism is laumontite-chlorite zone (zeolite facies). Mineral assemblages and constrained uplift rates allow temperature and depth estimates of 200 ± 30° C and 2-5 km, thus suggesting an approximate geothermal gradient of ~50°C/km. Such elevated temperatures imply a

Geochemical mobility and weathering degree of San Felipe deposit in Camagüey, Cuba

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Alfonso Chang-Rodríguez

2018-04-01

Full Text Available San Felipe es un yacimiento residual de corteza de intemperismo distintivo por su alto contenido de sílice. El propósito de este trabajo fue determinar los índices de intemperismo y los coeficientes de movilidad geoquímica en la corteza de meteorización. Utilizando los coeficientes de meteorización de Ginsburg (1946 y Rudnik (1966 se calculó la acumulación y extracción de los principales componentes (SiO2, MgO, FeO, Fe2O3, Al2O3. El análisis de los índices de intemperismo y del grado de acumulación-extracción absoluto permitió evaluar la movilidad, distribución y concentración de los elementos y esclarecer el mecanismo de migración y evacuación del níquel. El balance de masas reveló cómo ocurre la reducción de los componentes más móviles (magnesio, sílice y el aumento de los acumulativos (hierro, aluminio hacia arriba en el perfil, evidenciando que el contenido de sílice supera los valores atribuibles a un proceso de meteorización.

La evaluación y la calificación en los nuevos estudios de Grado. Especial incidencia en la formación inicial del profesorado

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Víctor López Pastor

2011-01-01

Full Text Available Este artículo analiza cómo se están llevando a cabo los procesos de evaluación del aprendizaje del alumnado en los nuevos planes de Grado, principalmente centrados en la formación inicial del profesorado (FIP, y valora hasta qué punto se están utilizando sistemas de evaluación formativa y si se está produciendo cierta evolución respecto al modelo anterior a la implantación del EEES. Para ello utiliza el análisis de contenido de 19 casos publicados sobre experiencias de implantación de las nuevas asignaturas de Grado en toda España, especialmente en la FIP. Como conclusión, parece importante potenciar una mayor formación en procesos de evaluación formativa para que la implantación de los nuevos estudios de Grado gane en coherencia y calidad.

INCIDENCE OF VARIABLES NON DIRECTLY CONTROLLABLE BY THE EDUCATIONAL SYSTEM IN STUDENTS’ READING LITERACY IN PISA: A COMPARATIVE STUDY SPAIN-FINLAND

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Esteban Vázquez Cano

2014-05-01

Full Text Available This comparative research between Spain and Finland examines the incidence of eight variables of PISA (2012 typologically grouped in three areas: family, internet use for reading activities, and availability of books at home in students’ results in reading literacy. Through a descriptive and quantitative methodology, we analyze the incidence of these eight variables in Finnish and Spanish students’ reading literacy. The results show that parents’ academic and professional level along with the type of book that is available at home are non-significant variables in the development of a high reading literacy; by contrast, the variable that measures Internet use at home for reading news has been highly significant. Finnish students duplicate the Spanish in this variable which increases in 30 points reading literacy results.

The San Diego Panasonic Partnership: A Case Study in Restructuring.

Science.gov (United States)

Holzman, Michael; Tewel, Kenneth J.

1992-01-01

The Panasonic Foundation provides resources for restructuring school districts. The article examines its partnership with the San Diego City School District, highlighting four schools that demonstrate promising practices and guiding principles. It describes recent partnership work on systemic issues, noting the next steps to be taken in San Diego.…

Determination of the Effectiveness of Control Rods in the VVER Reactor Fuel Assemblies; Determination de l'Efficacite des Barres de Reglage dans les Ensembles Combustibles du reacteur VVER; Opredelenie ehffektivnosti reguliruyushchikh sterzhnej v sborkakh reaktora VVEHR; Determinacion de la Eficacia de las Barras de Control en los Conjuntos de Elementos Combustibles del Reactor VVER

Energy Technology Data Exchange (ETDEWEB)

Semenov, V. N.; Lunin, G. L.; Komissarov, L. V.; Kamyshan, A. N.; Halizev, V. I.; Andrianov, G. Ja.; Voznesenskij, V. A.; Kuz' micheva, V. A.; Lebedev, V. I. [Ordena Lenina Institut Atomnoj Energii Im. I.V. Kurchatova, Moskva, SSSR (Russian Federation)

1964-06-15

The paper describes experiments done in homogeneous mock-ups of the fuel assemblies from the VVER Reactor (at one level of enrichment) to determine the effectiveness of absorbing systems comprising shim fuel assemblies or water cavities and of absorbing rods clad in jackets made of differing materials. The paper also gives data on some experiments that have been done in mock-ups of assemblies with differing levels of enrichment. These experiments make it possible to verify the methods used in calculation and to evaluate the prospects of using them for heterogeneous reactors. (author) [French] Le memoire decrit les experiences qui ont ete faites pour determiner l 'efficacite des absorbants contenus dans les barres de compensation, l'effet cavitaire et l 'efficacite des absorbants gaines de materiaux divers, au moyen d'assemblages homogenes de cartouches de combustible du reacteur VVER (reacteur de puissance ralenti et refroidi a l 'eau ayant le meme taux d'enrichissement. On y trouve en outre des donnees sur certaines experiences executees a l 'aide d'assemblages de cartouches de combustible taux d'enrichissement differents. Ces travaux permettent de verifier la methode de calcul et d'evaluer ses possibilites d'application aux reacteurs non homogenes. (author) [Spanish] Se describen en la memoria experimentos para determinar la eficacia de los materiales absorbentes contenidos en las barras de compensacion, el efecto de cavitacion y la eficacia de los materiales absorbentes revestidos de diversos materiales, realizados con ayuda de los conjuntos homogeneos de elementos combustibles del reactor VVER (reactor de potencia moderado y refrigerado por agua) con un solo grado de enriquecimiento. Ademas, se exponen datos sobre los experimentos efectuados con ayuda de conjuntos de grados de enriquecimientos; variados. Tales experimentos permiten verificar el metodo de calculo teorico, utilizad o y evaluar la posibilidad de aplicarlo a los reactores no homogeneos. (author

Desarrollo poblacional de Diaspidiotus perniciosus (Hemiptera: Diaspididae en cultivos de manzano de San Carlos, Mendoza, Argentina Population development of Diaspidiotus perniciosus (Hemiptera: Diaspididae in apple orchards in San Carlos, Mendoza, Argentina

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Guillermo P. Lopez Garcia

2011-12-01

Full Text Available Se estudió la bionomía de Diaspidiotus perniciosus Comstock ("escama de San José", en manzanos de la variedad "Red delicious" de San Carlos, Mendoza, Argentina, durante los ciclos productivos 2007-2008 y 2008-2009. Se determinó el número de generaciones anuales y se estudiaron las fluctuaciones poblacionales asociadas a la integral térmica para la especie en esta región. D. perniciosus presenta dos generaciones superpuestas al ciclo del cultivo, mientras que las ninfas (N1 y N2 de la tercera generación se desarrollan solamente hasta el final de la temporada estival y pasan al estado de quiescencia, en el que permanecen durante el invierno. El desarrollo de D. perniciosus en esta zona coincide con el de esta especie en la zona frutícola del centro de Chile en cuanto al número de generaciones y al periodo de quiescencia invernal. La población quiescente en Chile está integrada predominantemente por ninfas del primer estadio (N1, mientras que en San Carlos, Mendoza, la población quiescente está integrada principalmente por ninfas del segundo estadio (N2. La similitudes entre ambas poblaciones se deben, probablemente, a las coincidencias en latitud, clima y especie hospedera. El impacto económico de D. perniciosus en la zona de estudio tiene mayor relevancia durante los meses de diciembre y enero, cuando se observa una alta incidencia de daños en los frutos y las hojas; este es el momento decisivo para implementar medidas de control fitosanitario. Estas deberán aplicarse en función de los máximos poblacionales de N1 que se producen con 600-650 Grados-Día (ºD en diciembre y con 1.170-1.270ºD en enero. En las temporadas en las que la densidad poblacional de la plaga es especialmente alta, podrían incorporarse medidas adicionales de control con 1.800-2.000ºD durante el mes de abril. Los resultados de estos estudios representan una herramienta predictiva, que permitirá elaborar estrategias para el control de poblaciones de D

Programa para mejorar la comprensión de lectura en alumnos con problemas de atención y concentración de 1ero y 2do de secundaria de una I.E en el distrito de San Martin de Porres, Lima, 2016

OpenAIRE

Guerra Pando, Lourdes Yanina

2017-01-01

La presente investigación se titula “Programa para mejorar la comprensión de lectura en alumnos con problemas de atención y concentración de 1ero y 2do de secundaria de una I. E en el distrito de San Martin de Porres, Lima ,2016” y su objetivo es mejorar la comprensión lectora de alumnos de 1º y 2º grado de secundaria con problemas de atención y concentración. Es una investigación cuasi-experimental con un pre-test y un post test bajo un enfoque cuantitativo de tipo aplicado...

Validación de instrumentos para la evaluación formativa de la biología en estudiantes de grado sexto

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Salin Polania Polo

2015-12-01

Full Text Available Este artículo recoge la experiencia de validación de los instrumentos que se utilizarán para la evaluación desde el enfoque formativo en la enseñanza de la biología en estudiantes de grado sexto del Colegio Integrado de Fontibón de acuerdo a las categorías establecidas en el trabajo de investigación. Parte desde el concepto de evaluación y su enfoque formativo para los aprendizajes, lo que promueve en el profesor acciones de enseñanza dirigidas hacia sus estudiantes encaminadas a un diálogo permanente entre estos actores favoreciendo el aprendizaje desde la retroalimentación y la contextualización de las temáticas. Para ello se revisaron distintos autores que fundamentan la evaluación formativa y determinan las condiciones que caracterizan los instrumentos evaluativos adecuados para el enfoque formativo, los cuales se ajustan a un programa de intervención en la asignatura de biología de acuerdo al plan de estudios para grado sexto. Palabras claves: Evaluación formativa, instrumentos de evaluación, enseñanza de la biología, validación instrumentos.

A multi-purpose reactor

International Nuclear Information System (INIS)

Changwen Ma

2000-01-01

An integrated natural circulation self pressurized reactor can be used for sea water desalination, electrogeneration, ship propulsion and district or process heating. The reactor can be used for ship propulsion because it has following advantages: it is a integrated reactor. Whole primary loop is included in a size limited pressure vessel. For a 200 MW reactor the diameter of the pressure vessel is about 5 m. It is convenient to arranged on a ship. Hydraulic driving facility of control rods is used on the reactor. It notably decreases the height of the reactor. For ship propulsion, smaller diameter and smaller height are important. Besides these, the operation reliability of the reactor is high enough, because there is no rotational machine (for example, circulating pump) in safety systems. Reactor systems are simple. There are no emergency water injection system and boron concentration regulating system. These features for ship propulsion reactor are valuable. Design of the reactor is based on existing demonstration district heating reactor design. The mechanic design principles are the same. But boiling is introduced in the reactor core. Several variants to use the reactor as a movable seawater desalination plant are presented in the paper. When the sea water desalination plant is working to produce fresh water, the reactor can supply electricity at the same time to the local electricity network. Some analyses for comprehensive application of the reactor have been done. Main features and parameters of the small (Thermopower 200 MW) reactor are given in the paper. (author)

The disappearing San of southeastern Africa and their genetic affinities.

Science.gov (United States)

Schlebusch, Carina M; Prins, Frans; Lombard, Marlize; Jakobsson, Mattias; Soodyall, Himla

2016-12-01

Southern Africa was likely exclusively inhabited by San hunter-gatherers before ~2000 years ago. Around that time, East African groups assimilated with local San groups and gave rise to the Khoekhoe herders. Subsequently, Bantu-speaking farmers, arriving from the north (~1800 years ago), assimilated and displaced San and Khoekhoe groups, a process that intensified with the arrival of European colonists ~350 years ago. In contrast to the western parts of southern Africa, where several Khoe-San groups still live today, the eastern parts are largely populated by Bantu speakers and individuals of non-African descent. Only a few scattered groups with oral traditions of Khoe-San ancestry remain. Advances in genetic research open up new ways to understand the population history of southeastern Africa. We investigate the genomic variation of the remaining individuals from two South African groups with oral histories connecting them to eastern San groups, i.e., the San from Lake Chrissie and the Duma San of the uKhahlamba-Drakensberg. Using ~2.2 million genetic markers, combined with comparative published data sets, we show that the Lake Chrissie San have genetic ancestry from both Khoe-San (likely the ||Xegwi San) and Bantu speakers. Specifically, we found that the Lake Chrissie San are closely related to the current southern San groups (i.e., the Karretjie people). Duma San individuals, on the other hand, were genetically similar to southeastern Bantu speakers from South Africa. This study illustrates how genetic tools can be used to assess hypotheses about the ancestry of people who seemingly lost their historic roots, only recalling a vague oral tradition of their origin.

A SANS study of capillary condensation in porous media

International Nuclear Information System (INIS)

Lin, M.; Glinka, C.; Sinna, S.; Huang, J.; Abeles, B.; Johnson, J.; Drake, J.

1990-01-01

The authors use small angle neutron scattering (SANS) to study the microstructure of porous Vycor glass and the capillary condensation of fluids in the medium. Using a chord distribution model, they can predict the structure factor measured by SANS. Excellent agreement with the data is obtained. The fitted parameters characterize quantitatively the porous structure before and during the process of condensation, and are in good agreement with isotherm measurements. However, at the latest stages of the process, when all the pores are nearly filled, the model can no longer describe the system

EL CONCEPTO DE EVOLUCIÓN: UN NUEVO CONOCIMIENTO MÁS AMPLIO Y AJUSTADO A LA REALIDAD CIENTÍFICA EN ESTUDIANTES DE NOVENO GRADO A PARTIR DE UNA RECONCEPTUALIZACIÓN

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Eliana Mitzin Parra Pérez

2015-12-01

Full Text Available El estudiante, en cuanto indaga permanentemente por el saber, ambicionando establecer un equilibrio con sus discernimientos, busca respuestas, se plantea interrogantes, investiga y descubre, hasta llegar al conocimiento que le hace volver de nuevo al equilibrio cognitivo, de tal manera que la resolución de este conflicto se obtiene como resultado el aprendizaje, logrando que se reconfigure el esquema cognitivo previo. De acuerdo con lo anterior, el presente artículo da cuenta de la experiencia pedagógica realizada en el I.E.D Colegio San Martín de Porres ubicado en Bogotá, localidad de Chapinero, con estudiantes de noveno grado de la jornada de la tarde con edades entre los 14 y 19 años, bajo el enfoque de conflicto cognitivo. Con el objetivo de  romper la estructura cognitiva del alumno, generando una nueva reequilibración, resultado de un conocimiento enriquecido,  se implementó la unidad didáctica: “INTERPRETACIÓN DE LA EVOLUCIÓN: Enseñanza desde el conflicto cognitivo” guiando este concepto por tres condiciones: desafío, equilibro entre lo fácil y lo difícil, y su entendimiento. Evidenciando en los resultados obtenidos, un cambio conceptual que tuvo cada estudiante con respecto al concepto de evolución y los temas que sirvieron de mecanismo de abordaje. Concluyendo así que es posible despertar el interés de los estudiantes, al desarrollar el componente afectivo y de interrelación con el diario vivir, los condujo al fortalecimiento y manejo del aprendizaje científico.

The University of Pisa calculations for the Phase I of the OECD/NEA UAM Benchmark

International Nuclear Information System (INIS)

Ball, M.; Parisi, C.; D'Auria, F.

2009-01-01

In this paper we present the Univ. of Pisa preliminary results for the first exercise of the Phase I of the OECD/NEA Benchmark on the Uncertainty in Analysis and Modeling. The scope of exercise one is to address the uncertainties due to the basic nuclear data as well as the impact of processing the nuclear and covariance data, selection of multi-group structure and self-shielding treatment. DRAGON code and TSUNAMI code were employed, using the available covariance data matrix. The execution of DRAGON calculations required the use of ANGELO and LAMBDA codes for the extension of the covariance matrix from the original SCALE 44 group structure to DRAGON 69 group structure. The uncertainties for the main cross sections were evaluated and are presented here. (authors)

Gas-cooled reactor coolant circulator and blower technology

International Nuclear Information System (INIS)

1988-08-01

In the previous 17 meetings held within the framework of the International Working Group on Gas-Cooled Reactors, a wide variety of topics and components have been addressed, but the San Diego meeting represented the first time that a group of specialists had been convened to discuss circulator and blower related technology. A total of 20 specialists from 6 countries attended the meeting in which 15 technical papers were presented in 5 sessions: circulator operating experience I and II (6 papers); circulator design considerations I and II (6 papers); bearing technology (3 papers). A separate abstract was prepared for each of these papers. Refs, figs and tabs

78 FR 53243 - Safety Zone; TriRock San Diego, San Diego Bay, San Diego, CA

Science.gov (United States)

2013-08-29

... this rule because the logistical details of the San Diego Bay triathlon swim were not finalized nor... September 22, 2013. (c) Definitions. The following definition applies to this section: Designated...

Actitudes hacia la ciencia y grado de motivación en estudiantes adultos de secundaria de educación distrital formal

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Héctor Alexánder Afanador Castañeda

2014-01-01

Full Text Available El proyecto educativo e investigativo “Aprender a comunicar y comunicar para aprender” buscó en su primera etapa identificar las actitudes hacia la ciencia y establecer el grado de motivación hacia el aprendizaje de la ciencia en estudiantes adultos de secundaria que inician su proceso de aprendizaje luego de un periodo mayor de dos años sin estudiar dentro de una educación formal. El diseño metodológico recurrió al método cualitativo exploratorio, donde se utilizó la técnica de entrevista de ítems con escala o protocolo PAC, el cual fue restructurado a partir de categorías teniendo el contexto particular propio del colegio Justo Víctor Charry I.E.D., con la intención de hallar la tendencia de actitudes —escala Likert— y de forma empírica el grado de motivación —diferencia entre la categoría de actitudes favorables con la categoría de actitudes desfavorables—, este instrumento fue sometido a validación interna, cuyo coeficiente interno o de Cronbach estuvo por encima del valor español y colombiano (0.92. Los resultados obtenidos sobre actitudes hacia la ciencia, a partir de la comparación entre las mujeres y hombres del rango de edad 18 a 24 años con las mujeres y hombres del rango de edad 45 a más años y demás rangos, identificó que el declive de las actitudes hacia la ciencia disminuye a medida que aumenta la edad, y con respecto al nivel de escolaridad se afirma que disminuye a medida que aumenta el ciclo propedéutico de adultos. Al igual ocurre con el grado de motivación, presentan menor predisposición hacia la ciencia y menor grado de motivación hacia el aprendizaje de la misma, por causa de la gran influencia de la tendencia de las actitudes desfavorables.

Propuesta de herramienta para la evaluación del grado de implantación de la eadministración en CCAA

OpenAIRE

Turrillo Jimeno, Blanca Verónica

2012-01-01

El objetivo del presente proyecto es, partiendo de los criterios para la evaluación del grado de implantación de la eAdministración identificados en el Proyecto ‘Análisis de la eAdministración e identificación de criterios auditables para la evaluación del grado de implantación’, implementar una herramienta que permita evaluar el estado de implantación de la eAdministración en las Comunidades Autónomas, permitiendo además la explotación de esta información mediante la creación de informes que...

77 FR 59969 - Notice of Inventory Completion: San Francisco State University, Department of Anthropology, San...

Science.gov (United States)

2012-10-01

... Inventory Completion: San Francisco State University, Department of Anthropology, San Francisco, CA... Francisco State University, NAGPRA Program (formerly in the Department of Anthropology). The human remains... State University Department of Anthropology records. In the Federal Register (73 FR 30156-30158, May 23...

Nueva estructura para la enseñanza-aprendizaje de la materia de enfermería clínica en los estudios de Grado de Enfermería

Directory of Open Access Journals (Sweden)

Anna Falcó-Pegueroles

Full Text Available En el Grado de Enfermería, los cambios requeridos para la adaptación al Espacio Europeo de Educación Superior se han orientado a la introducción de novedades metodológicas que han propiciado la génesis de nuevos enfoques para la enseñanza y el aprendizaje, con el objetivo último de disminuir los desajustes que en algunas ocasiones se han detectado entre la teoría y la práctica. En esta línea, partiendo de las necesidades actuales de la formación en relación a la materia de enfermería clínica del grado y de las competencias profesionales, se inició un proceso de reflexión y análisis que originó una nueva estructura organizativa de la materia. Este nuevo enfoque nace con el objetivo fundamental de mejorar la docencia de la enfermería clínica, actualizando la forma de enseñar la enfermería y los cuidados enfermeros. Lejos del modelo biomédico centrado en la enfermedad que ha imperado hasta ahora, el nuevo enfoque parte de una visión profundamente enfermera y, en consecuencia, hace explícitos los cuidados de la persona con un trastorno real o potencial de la salud. Los resultados de la implementación de esta nueva estructura en la asignatura 'Enfermería clínica I' de segundo curso de grado ponen de manifiesto que hay una mejora en la precisión diagnóstica y en la etapa de planificación del proceso enfermero, así como en la identificación de la responsabilidad profesional en los ejes autónomo e interdisciplinar.

33 CFR 165.1182 - Safety/Security Zone: San Francisco Bay, San Pablo Bay, Carquinez Strait, and Suisun Bay, CA.

Science.gov (United States)

2010-07-01

... 33 Navigation and Navigable Waters 2 2010-07-01 2010-07-01 false Safety/Security Zone: San... Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) PORTS AND WATERWAYS SAFETY... Areas Eleventh Coast Guard District § 165.1182 Safety/Security Zone: San Francisco Bay, San Pablo Bay...

Progress in Methodologies for the Assessment of Passive Safety System Reliability in Advanced Reactors. Results from the Coordinated Research Project on Development of Advanced Methodologies for the Assessment of Passive Safety Systems Performance in Advanced Reactors

International Nuclear Information System (INIS)

2014-09-01

Strong reliance on inherent and passive design features has become a hallmark of many advanced reactor designs, including several evolutionary designs and nearly all advanced small and medium sized reactor (SMR) designs. Advanced nuclear reactor designs incorporate several passive systems in addition to active ones — not only to enhance the operational safety of the reactors but also to eliminate the possibility of serious accidents. Accordingly, the assessment of the reliability of passive safety systems is a crucial issue to be resolved before their extensive use in future nuclear power plants. Several physical parameters affect the performance of a passive safety system, and their values at the time of operation are unknown a priori. The functions of passive systems are based on basic physical laws and thermodynamic principals, and they may not experience the same kind of failures as active systems. Hence, consistent efforts are required to qualify the reliability of passive systems. To support the development of advanced nuclear reactor designs with passive systems, investigations into their reliability using various methodologies are being conducted in several Member States with advanced reactor development programmes. These efforts include reliability methods for passive systems by the French Atomic Energy and Alternative Energies Commission, reliability evaluation of passive safety system by the University of Pisa, Italy, and assessment of passive system reliability by the Bhabha Atomic Research Centre, India. These different approaches seem to demonstrate a consensus on some aspects. However, the developers of the approaches have been unable to agree on the definition of reliability in a passive system. Based on these developments and in order to foster collaboration, the IAEA initiated the Coordinated Research Project (CRP) on Development of Advanced Methodologies for the Assessment of Passive Safety Systems Performance in Advanced Reactors in 2008. The

Competencias y contenidos comunes de salud pública del grado en farmacia de las universidades españolas

Directory of Open Access Journals (Sweden)

Blanca Lumbreras

2015-01-01

Conclusiones: La representación de prácticamente todas las facultades que imparten el grado en farmacia en España, y el consenso alcanzado en la descripción de competencias y contenidos, constituyen una base para unificar criterios que garanticen la mejora de la calidad docente y formativa.

Grado de conocimiento sobre algunas cuestiones técnicas de la lactancia materna

Directory of Open Access Journals (Sweden)

Freddie Hernández Cisneros

1997-10-01

Full Text Available Se realizó un estudio de corte transversal con 2 grupos de madres de lactantes con el fin de identificar el grado de conocimiento sobre algunas cuestiones técnicas de la lactancia materna. El grupo de estudio se constituyó con 29 madres atendidas por 6 consultorios del médico de la familia del Policlínico Comunitario Centro de Camagüey y el grupo testigo por igual número de madres de lactantes no pertenecientes a esta área de salud y cuyos hijos se encontraban ingresados en ese momento en el Hospital Pediátrico Provincial. A ambos grupos se les aplicó un modelo de encuesta con variables seleccionadas y se procesan los datos obtenidos de forma manual. Los resultados más importantes obtenidos fueron: un predominio de madres adolescentes en el grupo testigo con un mayor grado de conocimiento en el grupo de estudio acerca de la rotación de los pechos, el horario de las tetadas, la realización de la expresión de las mamas y la utilización de otros alimentos, con evidentes fallos en los 2 grupos de la educación a impartir en la consulta de puericultura prenatal. Se concluyó que en ambos grupos hay que mejorar el grado de conocimiento sobre estas cuestiones técnicas, y también, la educación sanitaria que se debe impartir en dicha consulta.A cross-sectional study with two groups of nursing mothers was conducted aimed at identifyng their degree of knowledge about some technical questions of breast feefindg. The case-base study was composed of 29 mothers who were attended at 6 family physician's offices of the central Community Policlinic in Camagüey; whereas the control group consisted of the same number of nursing mother, whose children were admitted in the Provincial Pediatric Hospital at that time, eventhough they were not from the same health area. A survey with selected variables was applied to both groups and the datra obtained were manually processed. The most important results were: a predominance of adolecent mother in the

Butterfly fauna in Mount Gariwang-san, Korea

Directory of Open Access Journals (Sweden)

Cheol Min Lee

2016-06-01

Full Text Available The aim of this study is to elucidate butterfly fauna in Mt. Gariwang-san, Korea. A field survey was conducted from 2010 to 2015 using the line transect method. A literature survey was also conducted. A total of 2,037 butterflies belonging to 105 species were recorded. In the estimation of species richness of butterfly, 116 species were estimated to live in Mt. Gariwang-san. In butterfly fauna in Mt. Gariwang-san, the percentage of northern species was very high and the percentage of grassland species was relatively higher than that of forest edge species and forest interior species. Sixteen red list species were found. In particular, Mimathyma nycteis was only recorded in Mt. Gariwang-san. When comparing the percentage of northern species and southern species including those recorded in previous studies, the percentage of northern species was found to have decreased significantly whereas that of southern species increased. We suggest that the butterfly community, which is distributed at relatively high altitudes on Mt. Gariwang-san, will gradually change in response to climate change.

Grado de alfabetización informacional del profesorado de Secundaria en España: Creencias y autopercepciones

Directory of Open Access Journals (Sweden)

Mercè Gisbert Cervera

2015-07-01

Full Text Available La alfabetización informacional es una de las dimensiones de la competencia digital y, como tal, debe ser tenida muy en cuenta dentro de las competencias asumibles por cualquier persona en nuestros días, inmersa en la sociedad de la información y la comunicación, pero más concretamente por el profesorado de Educación Secundaria dada la gran importancia que tiene esta etapa en la formación de los alumnos. En este estudio hemos querido conocer cuál es el grado de alfabetización informacional del profesorado de Secundaria del estado español. Para ello hemos construido y aplicado un cuestionario (n=2.656. En dicho instrumento hemos sometido al profesorado a dos partes bien diferenciadas, una con cuestiones de creencia y autopercepción sobre los indicadores de la alfabetización informacional, y por otra, con cuestiones de situación, casos prácticos en los que el profesorado ha tenido que poner en práctica las habilidades y destrezas que tiene sobre la alfabetización informacional. Los resultados obtenidos confirman que las creencias del profesorado de Educación Secundaria dan valores bastante elevados pero también nos muestran que si bien el grado de alfabetización informacional del profesorado consigue el aprobado, hay ciertos aspectos de los indicadores relativos a la evaluación, gestión y transformación de la información donde los docentes tienen graves carencias. Todo ello pone de manifiesto la necesidad de plantear un plan formativo en alfabetización informacional del profesorado de Educación Secundaria de España.

Maíz, potencial productivo y seguridad alimentaria: el caso de San Nicolás de Los Ranchos, Puebla-México

Directory of Open Access Journals (Sweden)

Miguel A. Damián Huato

2016-01-01

Full Text Available Se expone un modelo tecnológico para aumentar el potencial productivo de maíz de secano, validado con productores de San Nicolás de los Ranchos Puebla-México. Se calculó el Índice de Apropiación de Tecnologías Radicales (IATR y el Grado de Empleo de Tecnologías Progresivas (GETP; se agruparon a los productores según su rendimiento para diseñar el modelo tecnológico y se estimó la seguridad alimentaria real y potencial. Se encontró que: en el manejo de maíz interaccionan innovaciones radicales y progresivas imperando las segundas; no hay relación directa entre el IATR y rendimientos, pero sí con el GETP; que 29% de los productores son eficientes; el 29% de los productores no poseen seguridad alimentaria y que si los productores de bajo y medio potencial productivo, aplicaran el patrón tecnológico de los productores eficientes, los rendimientos aumentarían, en promedio un 157% y 38%, respectivamente.

Choto-san in the treatment of vascular dementia: a double-blind, placebo-controlled study.

Science.gov (United States)

Terasawa, K; Shimada, Y; Kita, T; Yamamoto, T; Tosa, H; Tanaka, N; Saito, Y; Kanaki, E; Goto, S; Mizushima, N; Fujioka, M; Takase, S; Seki, H; Kimura, I; Ogawa, T; Nakamura, S; Araki, G; Maruyama, I; Maruyama, Y; Takaori, S

1997-03-01

In an earlier placebo-controlled study, we demonstrated that a kampo (Japanese herbal) medicine called Choto-san (Diao-Teng-San in Chinese) was effective in treating vascular dementia. To evaluate its efficacy using more objective criteria, we carried out a multi-center, double-blind study of Choto-san extract (7.5 g/day) and a placebo, each given three times a day for 12 weeks to patients suffering from this condition. The study enrolled and analyzed 139 patients, 50 males and 89 females, with a mean age of 76.6 years. Choto-san was statistically superior to the placebo in global improvement rating, utility rating, global improvement rating of subjective symptoms, global improvement rating of psychiatric symptoms and global improvement rating of disturbance in daily living activities. Such items as spontaneity of conversation, lack of facial expression, decline in simple mathematical ability, global intellectual ability, nocturnal delirium, sleep disturbance, hallucination or delusion, and putting on and taking off clothes were significantly improved at one or more evaluation points in those taking Choto-san compared to those taking the placebo. Furthermore, the change in revised version of Hasegawa's dementia scale from the beginning point in Choto-san group was tended to be higher than that in placebo group with no statistical significance. These results suggest that Choto-san is effective in the treatment of vascular dementia. Copyright © 1997 Gustav Fischer Verlag. Published by Elsevier GmbH.. All rights reserved.

ASTER Flyby of San Francisco

Science.gov (United States)

2002-01-01

The Advanced Spaceborne Thermal Emission and Reflection radiometer, ASTER, is an international project: the instrument was supplied by Japan's Ministry of International Trade and Industry. A joint US/Japan science team developed algorithms for science data products, and is validating instrument performance. With its 14 spectral bands, extremely high spatial resolution, and 15 meter along-track stereo capability, ASTER is the zoom lens of the Terra satellite. The primary mission goals are to characterize the Earth's surface; and to monitor dynamic events and processes that influence habitability at human scales. ASTER's monitoring and mapping capabilities are illustrated by this series of images of the San Francisco area. The visible and near infrared image reveals suspended sediment in the bays, vegetation health, and details of the urban environment. Flying over San Francisco (3.2MB) (high-res (18.3MB)), we see the downtown, and shadows of the large buildings. Past the Golden Gate Bridge and Alcatraz Island, we cross San Pablo Bay and enter Suisun Bay. Turning south, we fly over the Berkeley and Oakland Hills. Large salt evaporation ponds come into view at the south end of San Francisco Bay. We turn northward, and approach San Francisco Airport. Rather than landing and ending our flight, we see this is as only the beginning of a 6 year mission to better understand the habitability of the world on which we live. For more information: ASTER images through Visible Earth ASTER Web Site Image courtesy of MITI, ERSDAC, JAROS, and the U.S./Japan ASTER Science Team

A new record for American Bullfrog (Lithobates catesbeianus in San Juan, Argentina Nuevo registro de rana toro americana (Lithobates catesbeianus en San Juan, Argentina

Directory of Open Access Journals (Sweden)

Eduardo Sanabria

2011-03-01

Full Text Available We report a new record of Lithobates catesbeianus (American bullfrog from Argentina. L. catesbeianus was first introduced to San Juan Province 11 years ago in Calingasta Department, where the habitat is pre-cordilleran. The new record is for Zonda Department, San Juan Province, in the Monte desert region. Here, L. catesbeianus uses artificial ponds for reproduction and tadpole development. These ponds receive water from an irrigation system that connects the whole agriculture land in the region. The tadpoles use the irrigation canals to move among ponds. We suggest that legislation should be established to prevent future invasions and to achieve sustainable management of the wild American bullfrog populations in San Juan. Prevention of future invasion and management of established populations of this species requires the cooperation of numerous stake holders.Se presenta un nuevo registro de Lithobates catesbeianus (rana toro americana en Argentina. L. catesbeianus fue introducida por primera vez a la provincia de San Juan hace 11 años en el Departamento Calingasta, donde el hábitat es pre-cordillerano. El nuevo registro es para el Departamento Zonda en la provincia de San Juan, en el desierto del Monte. En este sitio, L. catesbeianus usa estanques artificiales para la reproducción y desarrollo del renacuajo. Los estanques reciben agua de un sistema de riego que conecta todas las tierras de la agricultura en la región. Los renacuajos utilizan los canales de riego para moverse entre los estanques. Sugerimos que se establezcan leyes para prevenir invasiones futuras y para lograr un manejo integrado de las poblaciones silvestres de rana toro que se encuentran en San Juan. La prevención de futuras invasiones y el manejo de las poblaciones establecidas de esta especie requieren la cooperación de numerosas entidades tanto gubernamentales como privadas.

San Francisco Bay Long Term Management Strategy for Dredging

Science.gov (United States)

The San Francisco Bay Long Term Management Strategy (LTMS) is a cooperative effort to develop a new approach to dredging and dredged material disposal in the San Francisco Bay area. The LTMS serves as the Regional Dredging Team for the San Francisco area.

Una lucha a "cielo abierto" : el caso del Frente Amplio Opositor a Minera San Xavier

OpenAIRE

Lamberti, María Julieta

2010-01-01

Se presenta un estudio de caso de un conflicto ecológico distributivo por la instalación de una empresa minera de tajo a cielo abierto desde la perspectiva de uno de los actores involucrados, el Frente Amplio Opositor a Minera San Xavier en Cerro de San Pedro, San Luis Potosí. Para dar cuenta del sentido que le otorgan los miembros del FAO a la instalación de la empresa en la comunidad se utilizan los procesos de enmarcado como herramienta de interpretación. I. La interpretación de los con...

Toxic phytoplankton in San Francisco Bay

Science.gov (United States)

Rodgers, Kristine M.; Garrison, David L.; Cloern, James E.

1996-01-01

The Regional Monitoring Program (RMP) was conceived and designed to document the changing distribution and effects of trace substances in San Francisco Bay, with focus on toxic contaminants that have become enriched by human inputs. However, coastal ecosystems like San Francisco Bay also have potential sources of naturally-produced toxic substances that can disrupt food webs and, under extreme circumstances, become threats to public health. The most prevalent source of natural toxins is from blooms of algal species that can synthesize metabolites that are toxic to invertebrates or vertebrates. Although San Francisco Bay is nutrient-rich, it has so far apparently been immune from the epidemic of harmful algal blooms in the world’s nutrient-enriched coastal waters. This absence of acute harmful blooms does not imply that San Francisco Bay has unique features that preclude toxic blooms. No sampling program has been implemented to document the occurrence of toxin-producing algae in San Francisco Bay, so it is difficult to judge the likelihood of such events in the future. This issue is directly relevant to the goals of RMP because harmful species of phytoplankton have the potential to disrupt ecosystem processes that support animal populations, cause severe illness or death in humans, and confound the outcomes of toxicity bioassays such as those included in the RMP. Our purpose here is to utilize existing data on the phytoplankton community of San Francisco Bay to provide a provisional statement about the occurrence, distribution, and potential threats of harmful algae in this Estuary.

Distribution and demography of San Francisco gartersnakes (Thamnophis sirtalis tetrataenia) at Mindego Ranch, Russian Ridge Open Space Preserve, San Mateo County, California

Science.gov (United States)

Kim, Richard; Halstead, Brian J.; Wylie, Glenn D.; Casazza, Michael L.

2018-04-26

San Francisco gartersnakes (Thamnophis sirtalis tetrataenia) are a subspecies of common gartersnakes endemic to the San Francisco Peninsula of northern California. Because of habitat loss and collection for the pet trade, San Francisco gartersnakes were listed as endangered under the precursor to the Federal Endangered Species Act. A population of San Francisco gartersnakes resides at Mindego Ranch, San Mateo County, which is part of the Russian Ridge Open Space Preserve owned and managed by the Midpeninsula Regional Open Space District (MROSD). Because the site contained non-native fishes and American bullfrogs (Lithobates catesbeianus), MROSD implemented management to eliminate or reduce the abundance of these non-native species in 2014. We monitored the population using capture-mark-recapture techniques to document changes in the population during and following management actions. Although drought confounded some aspects of inference about the effects of management, prey and San Francisco gartersnake populations generally increased following draining of Aquatic Feature 3. Continued management of the site to keep invasive aquatic predators from recolonizing or increasing in abundance, as well as vegetation management that promotes heterogeneous grassland/shrubland near wetlands, likely would benefit this population of San Francisco gartersnakes.

Evaluación de objetos de aprendizaje en Realidad Aumentada: estudio piloto en el grado de Medicina

Directory of Open Access Journals (Sweden)

Julio BARROSO OSUNA

2016-12-01

Full Text Available El artículo gira en torno a la utilización educativa de contenidos en Realidad Aumentada en contextos de formación universitaria, tecnología que es considerada emergente y que tendrá un fuerte nivel de penetración en nuestros centros educativos y universidades a un cercano horizonte. Con el objeto de analizar las percepciones que los alumnos mostraban respecto a la calidad técnica y estética, y su facilidad de utilización, de objetos producidos para los estudiantes del Grado de Medicina que cursaban la asignatura de «Anatomía Humana i», impartida en el primer curso de dicho Grado, se realizó un estudio piloto donde los estudiantes interaccionaron con los mismos y finalmente tenían que evaluarlos, para ello se creó y fiabilizó un instrumento específico. Los resultados encontrados muestran diferentes aspectos que van desde las percepciones significativas que los objetos producidos han despertado en los estudiantes, su facilidad de uso y su posibilidad de integrarse en la enseñanza. Los resultados encontrados coinciden en los alcanzados en otros trabajos.

Modeling pesticide loadings from the San Joaquin watershed into the Sacramento-San Joaquin Delta using SWAT

Science.gov (United States)

Chen, H.; Zhang, M.

2016-12-01

The Sacramento-San Joaquin Delta is an ecologically rich, hydrologically complex area that serves as the hub of California's water supply. However, pesticides have been routinely detected in the Delta waterways, with concentrations exceeding the benchmark for the protection of aquatic life. Pesticide loadings into the Delta are partially attributed to the San Joaquin watershed, a highly productive agricultural watershed located upstream. Therefore, this study aims to simulate pesticide loadings to the Delta by applying the Soil and Water Assessment Tool (SWAT) model to the San Joaquin watershed, under the support of the USDA-ARS Delta Area-Wide Pest Management Program. Pesticide use patterns in the San Joaquin watershed were characterized by combining the California Pesticide Use Reporting (PUR) database and GIS analysis. Sensitivity/uncertainty analyses and multi-site calibration were performed in the simulation of stream flow, sediment, and pesticide loads along the San Joaquin River. Model performance was evaluated using a combination of graphic and quantitative measures. Preliminary results indicated that stream flow was satisfactorily simulated along the San Joaquin River and the major eastern tributaries, whereas stream flow was less accurately simulated in the western tributaries, which are ephemeral small streams that peak during winter storm events and are mainly fed by irrigation return flow during the growing season. The most sensitive parameters to stream flow were CN2, SOL_AWC, HRU_SLP, SLSUBBSN, SLSOIL, GWQMN and GW_REVAP. Regionalization of parameters is important as the sensitivity of parameters vary significantly spatially. In terms of evaluation metric, NSE tended to overrate model performance when compared to PBIAS. Anticipated results will include (1) pesticide use pattern analysis, (2) calibration and validation of stream flow, sediment, and pesticide loads, and (3) characterization of spatial patterns and temporal trends of pesticide yield.

Vegetation - San Felipe Valley [ds172

Data.gov (United States)

California Natural Resource Agency — This Vegetation Map of the San Felipe Valley Wildlife Area in San Diego County, California is based on vegetation samples collected in the field in 2002 and 2005 and...

Development of 40m SANS and Its Utilization Techniques

International Nuclear Information System (INIS)

Choi, Sung Min; Kim, Tae Hwan

2010-06-01

Small angle neutron scattering (SANS) has been a very powerful tool to study nanoscale (1-100 nm) bulk structures in various materials such as polymer, self assembled materials, nano-porous materials, nano-magnetic materials, metal and ceramics. Understanding the importance of the SANS instrument, the 8m SANS instrument was installed at the CN beam port of HANARO in 2001. However, without having a cold neutron source, the beam intensity is fairly low and the Q-range is rather limited due to short instrument length. In July 1, 2003, therefore, the HANARO cold neutron research facility project was launched and a state of the art 40m SANS instrument was selected as top-priority instrument. The development of the 40m SANS instrument was completed as a joint project between Korea Advanced Institute of Science and Technology and the HANARO in 2010. Here, we report the specification of a state of art 40m SANS instrument at HANARO

A basin-scale approach for assessing water resources in a semiarid environment: San Diego region, California and Mexico

Directory of Open Access Journals (Sweden)

L. E. Flint

2012-10-01

Full Text Available Many basins throughout the world have sparse hydrologic and geologic data, but have increasing demands for water and a commensurate need for integrated understanding of surface and groundwater resources. This paper demonstrates a methodology for using a distributed parameter water-balance model, gaged surface-water flow, and a reconnaissance-level groundwater flow model to develop a first-order water balance. Flow amounts are rounded to the nearest 5 million cubic meters per year.

The San Diego River basin is 1 of 5 major drainage basins that drain to the San Diego coastal plain, the source of public water supply for the San Diego area. The distributed parameter water-balance model (Basin Characterization Model was run at a monthly timestep for 1940–2009 to determine a median annual total water inflow of 120 million cubic meters per year for the San Diego region. The model was also run specifically for the San Diego River basin for 1982–2009 to provide constraints to model calibration and to evaluate the proportion of inflow that becomes groundwater discharge, resulting in a median annual total water inflow of 50 million cubic meters per year. On the basis of flow records for the San Diego River at Fashion Valley (US Geological Survey gaging station 11023000, when corrected for upper basin reservoir storage and imported water, the total is 30 million cubic meters per year. The difference between these two flow quantities defines the annual groundwater outflow from the San Diego River basin at 20 million cubic meters per year. These three flow components constitute a first-order water budget estimate for the San Diego River basin. The ratio of surface-water outflow and groundwater outflow to total water inflow are 0.6 and 0.4, respectively. Using total water inflow determined using the Basin Characterization Model for the entire San Diego region and the 0.4 partitioning factor, groundwater outflow from the San Diego region, through

77 FR 42649 - Safety Zone: Sea World San Diego Fireworks, Mission Bay; San Diego, CA

Science.gov (United States)

2012-07-20

... 1625-AA00 Safety Zone: Sea World San Diego Fireworks, Mission Bay; San Diego, CA AGENCY: Coast Guard... authorized by the Captain of the Port, or his designated representative. DATES: This rule is effective from 8... to ensure the public's safety. B. Basis and Purpose The Ports and Waterways Safety Act gives the...

Coal exploration in the Alto San Jorge area, Cordoba Department. Exploracion de carbones en el Ato San Jorge, Departamento de Cordoba

Energy Technology Data Exchange (ETDEWEB)

Ospina, L H; Oquendo, G G [Geominas Ltda, Medellin (Colombia)

1989-01-01

A Mining Feasibility Study in the Area of Alto San Jorge, Department of Cordoba, Colombia, was commissioned by CARBOCOL S.A. to the Consortium Geominas-NACI. An area of 800 Ka2 was explored to define surface mining possibilities within two subareas referred to as Alto San Jorge and San Pedro Ure. Rocks of Cretaceous, Tertiary and Quaternary age crop out in the zone. In the subarea Alto San Jorge the principal structure is a syncline with a south-north direction. The San Pedro Ure subarea is formed by undulations with flanks of low dip, the most important being the San Antonio Syncline because it contains the mining block. The geological study of the surface demonstrated the existence of coal in the Oligocene Cienaga de Oro Formation and the Niocene Cerrito Formation, with potential resources of 6.3 billion tons. The subsequent exploration of the subsoil, with 20.618 m of drilling, permitted determination of demonstrated reserves in the order of 2.9 billion tons within two areas. In the sector selected for the mine plan, in the area of San Pedro-Puerto Libertador, 7.791 m of drilling was accomplished to define a demonstrated reserve of 515 million tons of coal down to a depth of 200. The combustible type coal has 5.000 cal/g. Complete mining schedules were developed at the prefeasibility level for two surface mines with productions of 1.5 MMTY and 4 MMTY. 9 figs., 3 tabs., 28 refs.

Flow-induced vibration phenomenon in a Mark III TRIGA reactor

Energy Technology Data Exchange (ETDEWEB)

Lee, C K; Whittemore, W L; Kim, B S; Lee, J B; Blevins, R D; Burton, T E [Korea Atomic Energy Research Institute, Seoul (Korea, Republic of); General Atomic Company, San Diego, CA (United States)

1976-07-01

The Mark III TRIGA reactor with hexagonal fuel spacing is capable of operating at 2.0 MW. The Mark III at San Diego operated without core cooling problems or vibration at power levels up to 2.0 MW. All Mark III reactors have operated trouble-free up to 1.0 MW. The Mark III TRIGA in Korea was installed in 1972 and operated many months without trouble at 2.0 MW. During this period core changes including addition of new fuel were made. Eighteen months after startup, a coolant flow-induced vibration was observed for the first time at a power of 1.5 MW. A lengthy series of tests showed that it was not possible to establish a core configuration that permitted vibration-free operation for power levels in the range 1.5 - 2.0 MW. Observations during the tests confirmed that standing waves in the reactor tank water coupled the source within the core to the shield structure and surrounding building. Analysis of the data indicates strongly that the source of the vibration is the creation and collapse of bubbles with the core acting as a resonator. A substantially increased flow of coolant through the upper grid plate is expected to eliminate the vibration phenomenon and permit trouble-free operation at power up to 2.0 MW. In an attempt to seek a remedy, both GAC and KAERI have independently developed designs for upper grid plates. KAERI has constructed and installed an interim version of the standard grid plate which was calculated to provide 25% more coolant flow and mounted high so as to provide less restriction to flow around the upper fittings of the fuel elements. A substantial reduction in vibration was observed. No vibration was observed at any power up to 2.0 MW with cooling water at or below 20 C. A slight vibration at 1.8 MW occurred for higher cooling temperatures. The GAC grid plate design provides not only for increasing the flow area but also for streamlining the flow surfaces on the grid plate and possibly also on the top fittings of the fuel elements. It is

Flow-induced vibration phenomenon in a Mark III TRIGA reactor

International Nuclear Information System (INIS)

Lee, C.K.; Whittemore, W.L.; Kim, B.S.; Lee, J.B.; Blevins, R.D.; Burton, T.E.

1976-01-01

The Mark III TRIGA reactor with hexagonal fuel spacing is capable of operating at 2.0 MW. The Mark III at San Diego operated without core cooling problems or vibration at power levels up to 2.0 MW. All Mark III reactors have operated trouble-free up to 1.0 MW. The Mark III TRIGA in Korea was installed in 1972 and operated many months without trouble at 2.0 MW. During this period core changes including addition of new fuel were made. Eighteen months after startup, a coolant flow-induced vibration was observed for the first time at a power of 1.5 MW. A lengthy series of tests showed that it was not possible to establish a core configuration that permitted vibration-free operation for power levels in the range 1.5 - 2.0 MW. Observations during the tests confirmed that standing waves in the reactor tank water coupled the source within the core to the shield structure and surrounding building. Analysis of the data indicates strongly that the source of the vibration is the creation and collapse of bubbles with the core acting as a resonator. A substantially increased flow of coolant through the upper grid plate is expected to eliminate the vibration phenomenon and permit trouble-free operation at power up to 2.0 MW. In an attempt to seek a remedy, both GAC and KAERI have independently developed designs for upper grid plates. KAERI has constructed and installed an interim version of the standard grid plate which was calculated to provide 25% more coolant flow and mounted high so as to provide less restriction to flow around the upper fittings of the fuel elements. A substantial reduction in vibration was observed. No vibration was observed at any power up to 2.0 MW with cooling water at or below 20 C. A slight vibration at 1.8 MW occurred for higher cooling temperatures. The GAC grid plate design provides not only for increasing the flow area but also for streamlining the flow surfaces on the grid plate and possibly also on the top fittings of the fuel elements. It is

Desarrollo poblacional de Diaspidiotus perniciosus (Hemiptera: Diaspididae en cultivos de manzano de San Carlos, Mendoza, Argentina

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Guillermo P. LOPEZ GARCIA

2011-01-01

Full Text Available Se estudió la bionomía de Diaspidiotus perniciosus Comstock (“escama de San José”, en manzanos de la variedad “Red delicious” de San Carlos, Mendoza, Argentina, durante los ciclos productivos 2007-2008 y 2008-2009. Se determinó el número de generaciones anuales y se estudiaron las fluctuaciones poblacionales asociadas a la integral térmica para la especie en esta región. D. perniciosus presenta dos generaciones superpuestas al ciclo del cultivo, mientras que las ninfas (N1 y N2 de la tercera generación se desarrollan solamente hasta el final de la temporada estival y pasan al estado de quiescencia, en el que permanecen durante el invierno. El desarrollo de D. perniciosus en esta zona coincide con el de esta especie en la zona frutícola del centro de Chile en cuanto al número de generaciones y al periodo de quiescencia invernal. La población quiescente en Chile está integrada predominantemente por ninfas del primer estadio (N1, mientras que en San Carlos, Mendoza, la población quiescente está integrada principalmente por ninfas del segundo estadio (N2. La similitudes entre ambas poblaciones se deben, probablemente, a las coincidencias en latitud, clima y especie hospedera. El impacto económico de D. perniciosus en la zona de estudio tiene mayor relevancia durante los meses de diciembre y enero, cuando se observa una alta incidencia de daños en los frutos y las hojas; este es el momento decisivo para implementar medidas de control fitosanitario. Estas deberán aplicarse en función de los máximos poblacionales de N1 que se producen con 600-650 Grados-Día (oD en diciembre y con 1.170-1.270oD en enero. En las temporadas en las que la densidad poblacional de la plaga es especialmente alta, podrían incorporarse medidas adicionales de control con 1.800-2.000oD durante el mes de abril. Los resultados de estos estudios representan una herramienta predictiva, que permitirá elaborar estrategias para el control de poblaciones de

Method of operating a reactor

International Nuclear Information System (INIS)

Oosumi, Katsumi; Yamamoto, Michiyoshi.

1980-01-01

Purpose: To prevent stress corrosion cracking in the structural material of a reactor pressure vessel. Method: Prior to the starting of a reactor, the reactor pressure vessel is evacuated to carry out degassing of reactor water, and, at the same time, reactor water is heated. After reactor water is heated to a predetermined temperature, control rods are extracted to start nuclear heating. While the temperature of the reactor water is in a temperature range where elution of a metal which is a structural material of the reactor pressure vessel becomes vigorous and the sensitivity to the stress corrosion cracks increases, the reactor is operated at the maximum permissible temperature raising speed or maximum permissible cooling speed. (Aizawa, K.)

San Onofre 2/3 simulator: The move from Unix to Windows

International Nuclear Information System (INIS)

Paquette, C.; Desouky, C.; Gagnon, V.

2006-01-01

CAE has been developing nuclear power plant (NPP) simulators for over 30 years for customers around the world. While numerous operating systems are used today for simulators, many of the existing simulators were developed to run on workstation-type computers using a variant of the Unix operating system. Today, thanks to the advances in the power and capabilities of Personal Computers (PC's), and because most simulators will eventually need to be upgraded, more and more of these RISC processor-based simulators will be converted to PC-based platforms running either the Windows or Linux operating systems. CAE's multi-platform simulation environment runs on the UNIX Linux and Windows operating systems, enabling simulators to be 'open' and highly interoperable systems using industry-standard software components and methods. The result is simulators that are easier to maintain and modify as reference plants evolve. In early January 2003, CAE set out to upgrade Southern California Edison's San Onofre Unit 2/3 UNIX-based simulator with its latest integrated simulation environment. This environment includes CAE's instructor station Isis, the latest ROSE modeling and runtime tool, as well as the deployment of a new reactor kinetics model (COMET) and new nuclear steam supply system (ANTHEM2000). The chosen simulation platform is PC-based and runs the Windows XP operating system. The main features and achievements of the San Onofre 2/3 Simulator's modernization from RISC/Unix to Intel/Windows XP, running CAE's current simulation environment, is the subject of this paper. (author)

CATEGORIZACIÓN DE LAS IDEAS PREVIAS DE LOS ESTUDIANTES DE GRADO SÉPTIMO SOBRE EL CONCEPTO DE RESPIRACIÓN ANIMAL

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Bayron Gil Bohórquez

2015-12-01

Full Text Available La escuela es un escenario de transición desde las ideas previas de los estudiantes hacia formas de comprensión más cercanas a las del conocimiento científico, por ello las ideas previas constituyen el punto de partida más importante en el diseño y la implementación de toda Unidad Didáctica basada en el enfoque de aprendizaje significativo. Se analizaron las ideas previas de 40 estudiantes del grado séptimo (11-15 años de la Institución Educativa Departamental San Gabriel, ubicado en el municipio de Cajicá, Cundinamarca; a través de la aplicación de un instrumento fundamentado en una pregunta abierta ¿Cómo respiramos?, la creación de un mapa conceptual acerca de la respiración en los animales, y un cuestionario con preguntas de selección múltiple y de tipo Falso o Verdadero que permiten conocer lo que el estudiante sabe acerca del concepto de respiración animal. Por último, se realiza la sistematización de datos para un posterior análisis cualitativo de las ideas previas utilizando el programa NVivo 10. Las ideas previas de los estudiantes acerca del concepto de Respiración Animal se asocian principalmente al proceso de intercambio gaseoso. Se observan dificultades para explicar procesos a nivel celular y de tipo estructura-función; aunque los estudiantes evidencian la importancia de la respiración para los animales y su relación con el sistema circulatorio. Es posible categorizar las ideas previas en los modelos explicativos: Intercambio gaseoso, vitalismo, pseudomolecular, y órganos-estructuras.

33 CFR 110.120 - San Luis Obispo Bay, Calif.

Science.gov (United States)

2010-07-01

... 33 Navigation and Navigable Waters 1 2010-07-01 2010-07-01 false San Luis Obispo Bay, Calif. 110... ANCHORAGES ANCHORAGE REGULATIONS Special Anchorage Areas § 110.120 San Luis Obispo Bay, Calif. (a) Area A-1. Area A-1 is the water area bounded by the San Luis Obispo County wharf, the shoreline, a line drawn...

San Juan Uchucuanicu: évolution historique

Directory of Open Access Journals (Sweden)

1975-01-01

Full Text Available La communauté de San Juan est reconnue depuis 1939. Une première partie concerne l’organisation de la reducción de San Juan vers le milieu du XVIe siècle. Le poids fiscal s’exerce durement sur le village et la crise est générale dans toute la vallée du Chancay au XVIIe. siècle. La christianisation des habitants est définitive au milieu de ce même siècle. C’est vers la fin du XVIIe siècle et durant tout le XVIIIe que se multiplient les conflits entre San Juan et les villages voisins liés aux terrains de pâture et à la possession de l’eau. La deuxième partie du travail concerne les rapports de la communauté de San Juan avec le Pérou contemporain : contrainte fiscale toujours très lourde durant la fin de l’époque coloniale, exactions des militaires juste avant l’indépendance. La période républicaine voit toujours les conflits avec les villages voisins mais aussi la naissance de familles qui cherchent à retirer le maximum de la communauté. Les terres sont divisées et attribuées : la détérioration de l’organisation communale traditionnelle est manifeste. L4es conflits se multiplient entre petits propriétaires, mais aussi avec les haciendas voisines : c’est l’apparition d’une véritable lutte de classes. La situation actuelle est incertaine, le poids de l’économie marchande se développe avec l’exode des jeunes. Que sera la communauté San Juan à la fin de ce siècle? La comunidad de San Juan está reconocida desde 1939. La primera parte concierne a la organización de la 'reducción' de San Juan hacia mediados del siglo XVI. El peso fiscal se ejerce duramente sobre el pueblo y en el siglo XVII la crisis es general en todo el valle de Chancay. Hacia mediados del mismo siglo la cristianización de los habitantes es definitiva. Es hacia fines del siglo XVII y durante todo el siglo XVIII que se multiplican los conflictos entre San Juan y los pueblos vecinos, los que están relacionados con los terrenos de

El lenguaje como factor de desigualdad en los aprendizajes en Pisa 2009: el caso de la frontera noreste de Uruguay con Brasil = Language as an inequality factor in learning in Pisa 2009: a case study at the boundary between Uruguay and Brazil

Directory of Open Access Journals (Sweden)

Fernández Aguerre, Tabaré

2016-01-01

Full Text Available The Uruguayan borderline with Brazil has historically been identified as a region with the worst socioeconomic indicators of the country. On the other side, Uruguayan borderline with Brazil is a bilingual region, with a categorized situation of diglossia from the earliest linguistic studies. This makes us wonder if differences on educational results are related with the use of “portuñol” on behalf of the Uruguayan borderline students. The aim of this research is to analyze the isolated effect of being a “portuñol” speaker and live in the borderline, over a standard model of educational inequality (social class, gender, type of educational institution. In order to achieve this we generated a Hierarchical Linear Model in two levels: students and schools, adding to the classical educational determinants linguistic factors, using microdata of Pisa 2009. The results allow us to confirm the hypothesis of a linguistic inequality on an individual level

Cenobios leoneses altomedievales ante la europeización: San Pedro y San Pablo de Montes, Santiago y San Martín de Peñalba y San Miguel de Escalada

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Martínez Tejera, Artemio Manuel

2002-06-01

Full Text Available The following paper analyses the behaviour of three of the most important monastic communities in the reing of Asturias-Leon for the ninth and then centuries. During this period we witness the implementation of a new ordo, or liturgical ritual that replaces the Hispanic one, strongly established in the Territorium. The liturgical adaptation produces tension and conflicts among the members of different monastic communities, and even between the Episcopate and the monarchy - being King Alfonso VI. In some of the monasteries, the arrival of the new ordo causes the adaptation of the liturgical space, with subsequent changes in liturgical furniture.

El presente estudio pretende analizar el comportamiento de tres de las más importantes comunidades monásticas astur-leonesas de los siglos IX y X (San Pedro y San Pablo de Montes, Santiago y San Martín de Peñalba y San Miguel de Escalada ante la recepción e implantación de aquel nuevo ordo o ritual litúrgico que vino a sustituir al Hispánico, fuertemente asentado en el territorium. Readaptación litúrgica que, con distinta intensidad, producirá tensiones y enfrentamientos entre los miembros de las distintas comunidades monásticas, incluso entre el episcopado y la monarquía (personificada en la figura de Alfonso VI, pero no únicamente. En alguno de estos monasterios la llegada del nuevo ordo supondrá, además, la readaptación de su espacio litúrgico, lo que trajo consigo significativas modificaciones constructivas.

75 FR 27432 - Security Zone; Golden Guardian 2010 Regional Exercise; San Francisco Bay, San Francisco, CA

Science.gov (United States)

2010-05-17

... can better evaluate its effects on them and participate in the rulemaking process. Small businesses... DEPARTMENT OF HOMELAND SECURITY Coast Guard 33 CFR Part 165 [Docket No. USCG-2010-0221] RIN 1625-AA87 Security Zone; Golden Guardian 2010 Regional Exercise; San Francisco Bay, San Francisco, CA AGENCY...

Students’ Mathematical Literacy in Solving PISA Problems Based on Keirsey Personality Theory

Science.gov (United States)

Masriyah; Firmansyah, M. H.

2018-01-01

This research is descriptive-qualitative research. The purpose is to describe students’ mathematical literacy in solving PISA on space and shape content based on Keirsey personality theory. The subjects are four junior high school students grade eight with guardian, artisan, rational or idealist personality. Data collecting methods used test and interview. Data of Keirsey Personality test, PISA test, and interview were analysed. Profile of mathematical literacy of each subject are described as follows. In formulating, guardian subject identified mathematical aspects are formula of rectangle area and sides length; significant variables are terms/conditions in problem and formula of ever encountered question; translated into mathematical language those are measurement and arithmetic operations. In employing, he devised and implemented strategies using ease of calculation on area-subtraction principle; declared truth of result but the reason was less correct; didn’t use and switch between different representations. In interpreting, he declared result as area of house floor; declared reasonableness according measurement estimation. In formulating, artisan subject identified mathematical aspects are plane and sides length; significant variables are solution procedure on both of daily problem and ever encountered question; translated into mathematical language those are measurement, variables, and arithmetic operations as well as symbol representation. In employing, he devised and implemented strategies using two design comparison; declared truth of result without reason; used symbol representation only. In interpreting, he expressed result as floor area of house; declared reasonableness according measurement estimation. In formulating, rational subject identified mathematical aspects are scale and sides length; significant variables are solution strategy on ever encountered question; translated into mathematical language those are measurement, variable, arithmetic

Yi-gan san restores behavioral alterations and a decrease of brain glutathione level in a mouse model of schizophrenia.