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Aproximadamente 396 registro(s) hasta el momento: (datos)

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Recurso libre

Towards the verification of RAISE specifications through Model Checking
Perna, Juan Ignacio - George, Chris W.

Formato:	Objeto de conferencia, Objeto de conferencia
Enlaces:	Ensuring the correctness of a given software component has become a crucial aspect in Software Engineering and the Model Checking technique provides a fully automated way to achieve this goal. In particular, the usage of Model Checking in formal languages…
Fecha:	2012-09-11
Recurso:	Unversidad Nacional de La Plata

Recurso libre

Interannual deviations of long-term data from observations and contrasting with reanalysis data from the oceanic station at Islas Marías, Nayarit, Mexico, Interannual deviations of long-term data from observations and contrasting with reanalysis data from the oceanic station at Islas Marías, Nayarit, Mexico
PALACIOS-HERNÁNDEZ, E.; Centro de Ciencias de la Atmósfera, Universidad Nacional Autónoma de México - BRITO-CASTILLO, L. - CARRILLO, L. - TERESHCHENKO, I.

Formato:	,
Enlaces:	We prepared a synthesis of historical weather conditions for Isla María Madre (1922-1989) to reflect conditions that impact the mainland of México. Observations were compared with regional reanalysis (RR) data in the same area. The results indicate that air temperature,…
Fecha:	2012-09-28
Recurso:	Revistas UNAM

Recurso libre

Seguridad en la administración y calidad de los datos de un sistema de información contable en el desempeño organizacional, Security in the data management and quality of accounting information systems for organizational performance
Melchor Medina, José - Lavín Verástegui, Jesús - Pedraza Melo, Norma Angélica

Formato:
Enlaces:	La información se manifiesta como factor de incidencia para las organizaciones en la concepción y persistencia de ventajas competitivas; sin embargo, en últimas fechas se ha visto amenazada por los altos niveles de inseguridad en su manejo. Este trabajo analiza…
Fecha:	2012-09-28
Recurso:	Revistas UNAM

Recurso libre

Burnout among elementary school teachers and their work performance, Burnout en profesores de primaria y su desempeño laboral
Rionda Arjona, Ariadnne; Facultad de Estudios Superiores Iztacala, UNAM, - Mares Cárdenas, María Guadalupe; Facultad de Estudios Superiores Iztacala, UNAM,

Formato:	articulo empirico, , ,
Enlaces:	Significant levels of the burnout syndrome were encountered in a study of 304 elementaryschool professionals, teaching students at the 8 to 12 year level, in Mexico City, Mexico.A questionnaire containing demographic, employment, and productivity data wasanalyzed and correlated in the…
Fecha:	2011-09-28
Recurso:	Revistas UNAM

Recurso libre

Analysis of two indexing structures for textual databases
Marín, Mauricio - Bonacic, Carolina - Casas, Sandra

Formato:	Objeto de conferencia, Objeto de conferencia
Enlaces:	This article describes strategies devised to improve the efficiency of two classical index data structures for parallel textual databases. The design and cost evaluation is effected on top of the bulk-synchronous model of parallel computing. This allows us to compare…
Fecha:	2012-10-29
Recurso:	Unversidad Nacional de La Plata

Recurso libre

La importancia de los mecanismos de coordinación organizativa en la excelencia del sistema español de trasplantes, The importance of the mechanisms for the organizational coordination in the Excellence of the Spanish Transplant System, The importance of the mechanisms for the organizational coordination in the excellence of the Spanish transplant system
De Pablos Heredero, Carmen; Universidad Rey Juan Carlos - Lopez Berzosa, David; IE Business School

Formato:	info:eu-repo/semantics/article, info:eu-repo/semantics/publishedVersion
Enlaces:	Purpose: To analyze from an organizational perspective the main critical success factors in the National Transplant System.Design/methodology: Deep interviews with different managerial positions at the system, the National Transplant Organization, coordination units at hospitals and local coordination authorities.Findings: Description of the National…
Fecha:	2012-04-28
Recurso:	Intangible capital

Recurso libre

Cluster analysis for validated climatology stations using precipitation in Mexico, Cluster analysis for validated climatology stations using precipitation in Mexico
BRAVO CABRERA, J. L.; Centro de Ciencias de la Atmósfera, Universidad Nacional Autónoma de México - AZPRA ROMERO, E. - ZARRALUQUI SUCH, V. - GAY GARCÍA, C. - ESTRADA PORRÚA, F.

Formato:	,
Enlaces:	Annual average of daily precipitation was used to group climatological stations into clusters using the k-means procedure and principal component analysis with varimax rotation. After a careful selection of the stations deployed in Mexico since 1950, we selected 349 characterized…
Fecha:	2012-09-28
Recurso:	Revistas UNAM

Recurso libre

Variations in aerosol optical and microphysical properties during an Indian festival observed with space-borne and ground-based observations, Variations in aerosol optical and microphysical properties during an Indian festival observed with space-borne and ground-based observations
VIJAYAKUMAR, K.; Centro de Ciencias de la Atmósfera, Universidad Nacional Autónoma de México - DEVARA, P. C. S.

Formato:	,
Enlaces:	This study analyzes changes in the response of meteorological parameters, aerosol, ozone, and water vapor properties over a tropical urban station in Pune, India, using ground-based and satellite data sets from February 23 to March 4, 2010 covering the Holi…
Fecha:	2012-09-28
Recurso:	Revistas UNAM

Recurso libre

An analysis of the variables that provide a supply chain with sustainable competitiveness, An analysis of the variables that provide a supply chain with sustainable competitiveness, Análisis de las variables que proporcionan una competitividad sostenible de la cadena de suministro
Arana-Solares, Iván A.; Tecnológico de Monterrey - Alfalla-Luque, Rafaela; University of Seville - Machuca, José A.D.; Universidad de Sevilla

Formato:	info:eu-repo/semantics/article, info:eu-repo/semantics/publishedVersion
Enlaces:	Purpose: An agile, adaptable and aligned (Triple A) supply chain (SC) would seem to be key to obtaining sustainable competitive advantages. Little previous research has been done into the topic, however, and there are even discrepancies on the conceptual level.…
Fecha:	2012-04-28
Recurso:	Intangible capital

Recurso libre

10.

Analysis of interdecadal variability of temperature extreme events in Argentina applying EVT, Analysis of interdecadal variability of temperature extreme events in Argentina applying EVT
TENCER, B.; Centro de Ciencias de la Atmósfera, Universidad Nacional Autónoma de México - RUSTICUCCI, M.

Formato:	,
Enlaces:	The frequency of occurrence of temperature extreme events has changed throughout the last century: significant positive trends in warm nights and negative trends in cold nights have been observed all over the world. In Argentina, the probability of occurrence of…
Fecha:	2012-09-28
Recurso:	Revistas UNAM

Recurso libre

11.

Tool support for verifying applications using object-oriented patterns
Aranda, Gabriela N. - Flores, Andrés P. - Buccella, Agustina - Reynoso, Luis A.

Formato:	Objeto de conferencia, Objeto de conferencia
Enlaces:	Applying design patterns is considered a helpful technique for designing software systems. Patterns description, however, results not sufficiently precise providing a weak understanding and making it difficult to be certain when a pattern is being used correctly. We have formally…
Fecha:	2012-10-02
Recurso:	Unversidad Nacional de La Plata

Recurso libre

12.

Methods for measurement-based COTS assessments and selection
Cechich, Alejandra - Piattini Velthuis, Mario

Formato:	Objeto de conferencia, Objeto de conferencia
Enlaces:	During recent years, new software engineering paradigms like component-based software engineering and COTS-based development have emerged. Both paradigms are concerned with reuse and customisation of existing components. The use of COTS software has become more and more important in state-of-the-art…
Fecha:	2012-10-02
Recurso:	Unversidad Nacional de La Plata

Recurso libre

13.

An extension to EMTPL
Cobo, María Laura - Falappa, Marcelo Alejandro

Formato:	Objeto de conferencia, Objeto de conferencia
Enlaces:	The development of languages allowing a proper handling of time is important in many areas of computer science because the capability to deal with the notions of change and time are essential to solve their problems. In the development of…
Fecha:	2012-10-02
Recurso:	Unversidad Nacional de La Plata

Recurso libre

14.

A framework for defining and checking constraints in requirement gathering and definition
Gómez, Rodolfo - Fillottrani, Pablo Rubén

Formato:	Objeto de conferencia, Objeto de conferencia
Enlaces:	Requirements capture user needs about a system [KG99]. They stand for those functional and nonfunctional attributes the system must posses to be considered correct. Requirements also dictate how the system should respond to user interaction. Therefore, they play a very…
Fecha:	2012-10-02
Recurso:	Unversidad Nacional de La Plata

Recurso libre

15.

Moodelling of processes and formal methods
Riesco, Daniel Eduardo - Montejano, Germán Antonio - Uzal, Roberto

Formato:	Objeto de conferencia, Objeto de conferencia
Enlaces:	We proposed her a technique, which can be employed within the methodology know as process reengineering. This technique was applied in a government environment, which included an Information System and Geographical Information System, developed with financial support from The World…
Fecha:	2012-10-02
Recurso:	Unversidad Nacional de La Plata

Recurso libre

16.

Formal specifications in component-based development
Estevez, Elsa Clara - Fillottrani, Pablo Rubén

Formato:	Objeto de conferencia, Objeto de conferencia
Enlaces:	Software engineering has entered a new era, the Internet and its associated technologies require a different conceptual framework for building and understanding software solutions. Users ask to develop applications more rapidly, and software engineers need to ensamble systems from preexisting…
Fecha:	2012-10-02
Recurso:	Unversidad Nacional de La Plata

Recurso libre

17.

A systematic approach to generate test cases based on combinations of information
Sánchez, Marisa - Felder, Miguel

Formato:	Objeto de conferencia, Objeto de conferencia
Enlaces:	Software based systems incrementally provide critical services to users. Mobile telephone systems, for example, are used in circumstances in which the malfunctioning may have disastrous consequences. During the last years, software has been incorporated in devices used in daily life,…
Fecha:	2012-10-02
Recurso:	Unversidad Nacional de La Plata

Recurso libre

18.

Project line: formally specifying the domain of balanced scorecard
Montejano, Germán Antonio - Uzal, Roberto - Riesco, Daniel Eduardo - Dasso, Aristides - Funes, Ana

Formato:	Objeto de conferencia, Objeto de conferencia
Enlaces:	In today’s world, in both the public or private organizations, there exists the problem that the organizations have to create value, are changing, but the tools to measure them are not. On the other hand, in the current economy, the…
Fecha:	2012-10-02
Recurso:	Unversidad Nacional de La Plata

Recurso libre

19.

Spectra in taxonomic evidence in databases III
Plastino, Ángel Luis - Orellana, Rosa Beatriz - Perichinsky, Gregorio

Formato:	Objeto de conferencia, Objeto de conferencia
Enlaces:	Numerical Taxonomy aims to group in clusters, using so-called structure analysis of operational taxonomic units (OTUs or taxons or taxa) through numerical methods. These clusters constitute families. Structural analysis, based on their phenotypic characteristics, exhibits the relationships, in terms of…
Fecha:	2012-10-02
Recurso:	Unversidad Nacional de La Plata

Recurso libre

20.

Integrated environment of systems automated engineering
Servetto, Arturo Carlos - García Martínez, Ramón - Perichinsky, Gregorio

Formato:	Objeto de conferencia, Objeto de conferencia
Enlaces:	The Standardization of a development process for systems of medium complexity, entirely supported by an integrated development environment, could mean a double contribution to the industry of systems development. On the one hand it would contribute to the reduction of…
Fecha:	2012-10-02
Recurso:	Unversidad Nacional de La Plata

Recurso libre

21.

Computing support for virtual communities of practice
Casalini, María Clara - Estevez, Elsa Clara - Janowski, Thomas

Formato:	Objeto de conferencia, Objeto de conferencia
Enlaces:	This document describes a research and development project - Semantic Web and Cooperative Problem Solving for Online Communities of Practice. The aim of the project is to build a system supporting Cooperative Problem Solving within the framework of online Communities…
Fecha:	2012-09-11
Recurso:	Unversidad Nacional de La Plata

Recurso libre

22.

A functional approach for in line analytical processing
Necco, Claudia Mónica - Quintas, Luis - Nuno Olivera, J.

Formato:	Objeto de conferencia, Objeto de conferencia
Enlaces:	This paper describes an approach to On Line Analytical Processing (OLAP), expresed in the declarative programming paradigm. We define a collection of functions that capture some of the functionality currently provided by multidimensional database product. This is done by defining…
Fecha:	2012-10-05
Recurso:	Unversidad Nacional de La Plata

Recurso libre

23.

Developing a Repository of Knowledge for virtual communities with semantic web technologies
Casalini, María Clara - Estevez, Elsa Clara - Fillottrani, Pablo Rubén

Formato:	Objeto de conferencia, Objeto de conferencia
Enlaces:	The appearance and continuous growth of virtual communities on the web imposes the challenge of coping with the large amount of information and knowledge these communities produce. The Semantic Web with its set of standards and technologies provides the basic…
Fecha:	2012-09-28
Recurso:	Unversidad Nacional de La Plata

Recurso libre

24.

Classification rules obtained from dynamic self-organizing maps
Hasperué, Waldo - Lanzarini, Laura Cristina

Formato:	Objeto de conferencia, Objeto de conferencia
Enlaces:	La obtención de conocimiento a partir de la información existente es un proceso no trivial que consiste en identificar patrones válidos, novedosos, potencialmente útiles y comprensibles a partir de los datos disponibles. La Minería de Datos es el área de…
Fecha:	2012-10-19
Recurso:	Unversidad Nacional de La Plata

Recurso libre

25.

Messaging infrastructure for Electronic Government: background, rationale, objectives
Estevez, Elsa Clara - Janowski, Thomas - Fillottrani, Pablo Rubén

Formato:	Objeto de conferencia, Objeto de conferencia
Enlaces:	Electronic Government applications aim to deliver efficient, seamless, customer-focused services to the public using various distribution channels. One of challenges in building such applications is the requirement to rely upon preexisting, often heterogeneous government applications. In order to enable communication…
Fecha:	2012-09-11
Recurso:	Unversidad Nacional de La Plata

Recurso libre

26.

The software architecture role in agile methodologies
Anacleto, Valerio Adrián

Formato:	Objeto de conferencia, Objeto de conferencia
Enlaces:	The software architecture role in agile methodologies is not sufficiently documented or formalized by means of a process consistent with the philosophy. The current work’s contributions are: 1) Defining guidelines to implement architecture practices in an agile way and so…
Fecha:	2012-10-11
Recurso:	Unversidad Nacional de La Plata

Recurso libre

27.

Nineteen sixties history of data base management
Olle, T. William

Formato:	Objeto de conferencia, Objeto de conferencia
Enlaces:	Data base management evolved during the sixties and seventies. The evolution period was protracted. Many driving forces impacted the evolution and it is the aim of this paper to analyze these driving forces (some technical and some political) and to…
Fecha:	2012-11-12
Recurso:	Unversidad Nacional de La Plata

Recurso libre

28.

Data modeling dealing with uncertainty in fuzzy logic
Urrutia Sepúlveda, Angélica - Galindo, José - Jiménez, Leoncio - Piattini Velthuis, Mario

Formato:	Objeto de conferencia, Objeto de conferencia
Enlaces:	This paper shows models of data description that incorporate uncertainty like models of data extension EER, IFO among others. These database modeling tools are compared with the pattern FuzzyEER proposed by us, which is an extension of the EER model…
Fecha:	2012-11-20
Recurso:	Unversidad Nacional de La Plata

Recurso libre

29.

Ubiquigeneous networking: a distributed networking application over mobile embedded devices
Kohn, Rodolfo - Marrone, Luis Armando

Formato:	Articulo, Revision
Enlaces:	Resumen de la tesis del autor para obtener el grado de Magister en Redes de Datos de la Facultad de Informática de la UNLP, dirigida por Luis Armando Marrone.
Fecha:	2011-09-01
Recurso:	Unversidad Nacional de La Plata

Recurso libre

30.

Collaborative problem solving in virtual communities of practice
Casalini, María Clara - Estevez, Elsa Clara - Janowski, Thomas

Formato:	Objeto de conferencia, Objeto de conferencia
Enlaces:	The paper presents a case study illustrating a collaborative problem solving process in Virtual Communities of Practice. The process relies on the existence of an underlying shared knowledge base – a repository of resources, and is carried out collaboratively by…
Fecha:	2012-10-09
Recurso:	Unversidad Nacional de La Plata

Recurso libre

31.

Defining the proxy design pattern using UML profile
Garis, Ana Gabriela - Riesco, Daniel Eduardo - Montejano, Germán Antonio

Formato:	Objeto de conferencia, Objeto de conferencia
Enlaces:	Today software solutions are often modeled using UML. Design patterns are frequently instantiated within these particular solutions. However, in several situations, UML is not expressive enough to describe them properly. UML profiles extend UML syntax and semantic in order to…
Fecha:	2012-10-09
Recurso:	Unversidad Nacional de La Plata

Recurso libre

32.

Model checking RAISE applicative specifications
Perna, Juan I. - George, Chris W.

Formato:	Objeto de conferencia, Objeto de conferencia
Enlaces:	Ensuring the correctness of a given software component has become a crucial aspect in Software Engineering and the Model Checking technique provides a fully automated way to achieve this goal. In particular, the usage of Model Checking in formal languages…
Fecha:	2012-10-09
Recurso:	Unversidad Nacional de La Plata

Recurso libre

33.

Use of asynchronous JavaScript and XML for comparative market analysis
Cáseres, Germán - Delía, Lisandro - Thomas, Pablo Javier - Ramón, Hugo Dionisio - Bertone, Rodolfo Alfredo

Formato:	Objeto de conferencia, Objeto de conferencia
Enlaces:	Generally, the interactivity provided by web applications is carried out through surfing, as a result of a server’s response at the request of a workstation. This is an essential characteristic of this type of software, although in some circumstances it…
Fecha:	2012-10-15
Recurso:	Unversidad Nacional de La Plata

Recurso libre

34.

Combine vector quantization and support vector machine for imbalanced datasets
Yu, Ting - Debenham, John - Jan, Tony - Simoff, Simeon

Formato:	Objeto de conferencia, Objeto de conferencia
Enlaces:	In cases of extremely imbalanced dataset with high dimensions, standard machine learning techniques tend to be overwhelmed by the large classes. This paper rebalances skewed datasets by compressing the majority class. This approach combines Vector Quantization and Support Vector Machine…
Fecha:	2012-11-08
Recurso:	Unversidad Nacional de La Plata

Recurso libre

35.

Sociolinguistic variation in the name of meals, Variación sociolingüística en los nombres de comidas
Rodríguez González, Félix

Formato:	info:eu-repo/semantics/article
Enlaces:	Este artículo tiene un doble objetivo: En primer lugar, describir las diferentes designaciones de las comidas en inglés, desde una perspectiva sincrónica y diacrónica, mediante el examen de la literatura escrita (repertorios lexicográficos, medios de comunicación, anuncios) En segundo lugar,…
Fecha:	2011-10-06
Recurso:	RUA Docencia

Recurso libre

36.

A language processing tool for program comprehension
Berón, Mario - Henriques, Pedro Rangel - Varanda Pereira, Maria João - Uzal, Roberto - Montejano, Germán Antonio

Formato:	Objeto de conferencia, Objeto de conferencia
Enlaces:	Program Comprehension is a Software Engineering discipline which aims to understand computer code written in a high-level programming language. Program Comprehension is useful for reuse, inspection, maintenance, reverse engineering and many other activities in the context of Software Engineering. In…
Fecha:	2012-10-05
Recurso:	Unversidad Nacional de La Plata

Recurso libre

37.

Design criteria for the development of an institutional learning object repository
Godoy, Roberto - Minni, Hugo - Zarza, Gonzalo - Loyarte, Horacio

Formato:	Objeto de conferencia, Objeto de conferencia
Enlaces:	The production of educational contents in academic environments has been traditionally developed without an integral plan which allows their adequate distribution and access. In addition, it produces effort duplication and misuse of resources. As a possible solution, this work proposes…
Fecha:	2012-10-16
Recurso:	Unversidad Nacional de La Plata

Recurso libre

38.

Evaluation of 3D image-treatment algorithms applied to optical-sectioning microscopy
Vicente, Nathalie B. - Diaz Zamboni, Javier E. - Adur, Javier F. - Casco, Víctor

Formato:	Objeto de conferencia, Objeto de conferencia
Enlaces:	La información extraída de especimenes biológicos es inherentemente tridimensional. Los datos tridimensionales (3D) permiten un mejor entendimiento de las estructuras y los eventos biológicos, comparados con sus proyecciones bidimensionales (2D), aunque a veces son más difíciles de manejar. Esto explica…
Fecha:	2012-10-15
Recurso:	Unversidad Nacional de La Plata

Recurso libre

39.

Skeletonization of sparse shapes using dynamic competitive neural networks
Hasperué, Waldo - Corbalán, Leonardo - Lanzarini, Laura Cristina - Bria, Oscar N.

Formato:	Objeto de conferencia, Objeto de conferencia
Enlaces:	La detección de regiones y objetos en imágenes digitales es un tema de suma importancia en la resolución de numerosos problemas correspondientes al área de reconocimiento de patrones. En esta dirección los algoritmos de esqueletización son una herramienta muy utilizada…
Fecha:	2012-10-19
Recurso:	Unversidad Nacional de La Plata

Recurso libre

40.

The dating of Pedro de Valencia’s Sobre el pergamino y láminas de Granada
Magnier, Grace

Formato:	info:eu-repo/semantics/article
Enlaces:	Los manuscritos del Parecer de Pedro de Valencia Sobre el pergamino y láminas de Granada, redactado a instancias del Inquisidor General, Bernardo de Sandoval y Rojas, llevan dos fechas distintas: el Ms 2316 de la BNM (ff. 1r-30r) está fechado…
Fecha:	2011-05-31
Recurso:	RUA Docencia

Recurso libre

41.

Lib4RI: Library for the Research Institutes within the ETH Domain: Eawag, Empa, PSI & WSL.
Research Institutes within the ETH Domain: Eawag - Empa - PSI & WSL

Formato:	Biblioteca virtual
Enlaces:	Descripción completa.
Fecha:	2012-11-05
Recurso:	Facultad de Ciencias - UNAM

Recurso libre

42.

Combining methods for searches in nested metric spaces
Gercek, Hugo - Reyes, Nora Susana - Deco, Claudia - Bender, Cristina - Salvetti, Mariano

Formato:	Objeto de conferencia, Objeto de conferencia
Enlaces:	Most search methods in metric spaces assume that the topology of the object collection is reasonably regular. However, there exist nested metric spaces, where objects in the collection can be grouped into clusters or subspaces, in such a way that…
Fecha:	2012-07-18
Recurso:	Unversidad Nacional de La Plata

Recurso libre

43.

Decision support system for seismic risks
Somodevilla, María J. - Nava, Angélica - Pineda, Ivo H. - Priego, Ángeles Belém - Castillo, Esteban

Formato:	Objeto de conferencia, Objeto de conferencia
Enlaces:	This paper focuses on prediction and prevention of seismic risk through a system for decision making. Data Warehousing and OLAP operations are applied, together with, data mining tools like association rules, decision trees and clustering to predict aspects such as…
Fecha:	2012-07-18
Recurso:	Unversidad Nacional de La Plata

Recurso libre

44.

Nomenclatural changes in Apteranthes Mikan (Asclepiadoideae, Apocynaceae)
Crespo Villalba, Manuel Benito

Formato:	info:eu-repo/semantics/article
Enlaces:	El género Apteranthes Mikan se considera constituido por unos ocho táxones, en su mayoría distribuidos por el norte de África. Sin embargo, algunos de sus componentes han sido infravalorados en las revisiones más recientes del género, pese a estar bien…
Fecha:	2012-05-11
Recurso:	RUA Docencia

Recurso libre

45.

Trends in tariff reforms and trends in the structure of wages
Galiani, Sebastian - Porto, Guido

Formato:	Articulo, Documento de trabajo
Enlaces:	Este trabajo aporta nuevas evidencias sobre el impacto de las reformas comerciales sobre los salarios. En primer lugar, se introduce un modelo de comercio que combina un mecanismo de fijación de salarios no competitivo debido a la existencia de sindicatos,…
Fecha:	2012-02-23
Recurso:	Unversidad Nacional de La Plata

Recurso libre

46.

Contributions to social security in Argentina, Chile and Uruguay: densities, transitions and duration
Sanromán, Graciela - Rossi, Ianina - Grushka, Carlos - Fajnzylber, Eduardo - Apella, Ignacio - Forteza, Álvaro

Formato:	Articulo, Articulo
Enlaces:	Los programas de pensiones latinoamericanos tienen baja cobertura. Utilizando paneles de registros administrativos de Argentina, Chile y Uruguay, caracterizamos las historias de contribución de la población. Construimos tres indicadores: densidad de cotización, tasas de transición y duración de los períodos…
Fecha:	2012-01-03
Recurso:	Unversidad Nacional de La Plata

Recurso libre

47.

NITROGEN DIOXIDE DOAS MEASUREMENTS FROM GROUND AND SPACE: COMPARISON OF ZENITH SCATTERED SUNLIGHT GROUND-BASED MEASUREMENTS AND OMI DATA IN CENTRAL MEXICO, NITROGEN DIOXIDE DOAS MEASUREMENTS FROM GROUND AND SPACE: COMPARISON OF ZENITH SCATTERED SUNLIGHT GROUND-BASED MEASUREMENTS AND OMI DATA IN CENTRAL MEXICO
Rivera, Claudia; Centro de Ciencias de la Atmósfera - UNAM Universidad Nacional Autónoma de México Circuito Exterior s/n, Ciudad Universitaria 04510 México D.F. MEXICO - Stremme, Wolfgang; Centro de Ciencias de la Atmósfera - UNAM Universidad Nacional Autónoma de México Circuito Exterior s/n, Ciudad Universitaria 04510 México D.F. MEXICO - Grutter, Michel; Centro de Ciencias de la Atmósfera - UNAM Universidad Nacional Autónoma de México Circuito Exterior s/n, Ciudad Universitaria 04510 México D.F. MEXICO

Formato:	,
Enlaces:	The use of satellite data in combination with ground-based measurements can provide valuable information about atmospheric chemistry and air quality. In this study, ground-based Differential Optical Absorption Spectroscopy (DOAS) measurements of nitrogen dioxide (NO2) conducted in central Mexico are compared…
Fecha:	2013-06-28
Recurso:	Revistas UNAM

Recurso libre

48.

Analysis of the determinants of CSR disclosure in Spanish listed companies, Analysis of the determinants of CSR disclosure in Spanish listed companies, Análisis de los factores determinantes de la transparencia en RSC en las empresas españolas cotizadas
Testera Fuertes, Adrian; Universidad de León - Cabeza García, Laura; Universidad de León

Formato:	info:eu-repo/semantics/article, info:eu-repo/semantics/publishedVersion
Enlaces:	Purpose: This paper aims to analyse in depth the determinants of disclosure of corporate social activities. In particular, it is focused on a barely considered factor: ownership structure. Design/methodology/approach: Using a sample of Spanish listed companies in 2008 we employed…
Fecha:	2013-01-28
Recurso:	Intangible capital

Recurso libre

49.

Using different null hypotheses to test for seasonal unit roots in economic time series
Sansó, Andreu - Aguirre, Antonio

Formato:	Articulo, Articulo
Enlaces:	Este trabajo discute la aplicación de diferentes técnicas para determinar las propiedades estacionales de datos trimestrales. En particular, enfocamos el test de Hylleberg et al. y los estadísticos propuestos por Canova y Hansen y los aplicamos a una serie microeconómica.…
Fecha:	2009-07-14
Recurso:	Unversidad Nacional de La Plata

Recurso libre

50.

Sistema automático de adquisición de datos para un medidor de deformación
Espinosa Ramón, Alfonso - Flores Cifuentes, Fernando

Formato:	Article
Enlaces:	El presente artículo describe un sistema de adquisición de datos para un medidor de deformación. Se presenta el análisis del diseño de la circuitería y la programación, los resultados obtenidos y finalmente algunas conclusiones.
Fecha:	2007-05-23
Recurso:	Escuela Politécnica Nacional