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Revistas UNAM (215)
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Unversidad Nacional de La Plata (30)
Bellaterra: Journal of teaching and Learning Language and Literature (12)
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Aproximadamente 333 registro(s) hasta el momento: (datos)

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Recurso libre

Edge and corner identification for tracking the line of sight, Edge and corner identiﬁcation for tracking the line of sight
Orozco, María S; Universidade de Vigo - Ruiz Salguero, Oscar Eduardo; EAFIT University - Jasnoch, Uwe; GIStec

Formato:	info:eu-repo/semantics/article, info:eu-repo/semantics/publishedVersion, , , ,
Enlaces:	Este artículo presenta un detector de aristas y esquinas, implementado en el dominio del proyecto GEIST (un Sistema de Información Turística Asistido por Computador) para extraer la información de aristas rectas y sus intersecciones (esquinas en la imagen) a partir…
Fecha:	2005-12-01
Recurso:	Revista Ingeniería y ciencia

Recurso libre

Improving use case definition using enterprise communication networks
Luzuriaga, Juan Manuel

Formato:	Objeto de conferencia, Objeto de conferencia
Enlaces:	Although researchers noted the importance of effective communication among stakeholders, it continues to be a challenge for requirements engineering. Communication can be considered as a management tool since communication allows organisation’s personnel to produce a cohesive enterprise view. In this…
Fecha:	2012-10-26
Recurso:	Unversidad Nacional de La Plata

Recurso libre

Using fuzzy sets to analyse personal preferences on groupware tools
Aranda, Gabriela N. - Cechich, Alejandra - Vizcaíno, Aurora - Castro-Schez, José J.

Formato:	Objeto de conferencia, Objeto de conferencia
Enlaces:	When stakeholders are geographically distributed communication presents new challenges for software engineering community. In order to improve communication between stakeholders, we have previously proposed to apply learning style models to characterise the way people interact. In this work we enhance…
Fecha:	2012-10-12
Recurso:	Unversidad Nacional de La Plata

Recurso libre

Data warehouse design with UML
Luján Mora, Sergio

Formato:	info:eu-repo/semantics/doctoralThesis
Enlaces:	Descripción completa.
Fecha:	2009-07-07
Recurso:	RUA Docencia

Recurso libre

Environmental and Occupational Optometry. Lesson 8 (Course 2013-2014)
Martínez Verdú, Francisco Miguel

Formato:	info:eu-repo/semantics/lecture
Enlaces:	Tema 8: Pantallas de visualización de datos. Actividad voluntaria nº 5.
Fecha:	2013-11-27
Recurso:	RUA Docencia

Recurso libre

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

Diseño y construcción de un prototipo contador de personas para sitios cerrados, utilizando sensores PIR (Piroelectric Infrared Radial) y sensores de ultrasonido
Cutucuamba Nepas, Boris Patricio - Quinga Quisphe, Amparo Leonor

Formato:	Tesis
Enlaces:	El presente proyecto desarrolla un prototipo contador de personas, utilizando sensores piroeléctricos y ultrasónicos; que permiten determinar cuando una persona pasa por un punto fijo y a la vez, con la ayuda de un software específico, permite determinar la dirección…
Fecha:	2011-01-20
Recurso:	Escuela Politécnica Nacional

Recurso libre

MONIL Language, an Alternative for Data Integration, El Lenguaje MONIL, una Alternativa para la Integración de Datos
MORALES BARRERA, EDUARDO - FRAUSTO SOLIS, JUAN - LARRE, MÓNICA - TORRES JIMÉNEZ, JOSÉ - TORRES, SÓCRATES

Formato:
Enlaces:	DATA INTEGRATION IS A PROCESS OF RETRIEVING, MERGING AND STORING OF DATA ORIGINATED IN HETEROGENEOUS SOURCES OF DATA. THE MAIN PROBLEM FACING THE DATA INTEGRATION IS THE STRUCTURAL AND SEMANTIC HETEROGENEITY OF PARTICIPATING DATA. A CONCERN OF RESEARCH COMMUNITIES IN…
Fecha:	1969-12-31
Recurso:	Revistas UNAM

Recurso libre

An integrated improvement framework for sharing assessment lessons learned
Rubio, Diego Martín - Andriano, Natalia Valeria - Ruiz de Mendarozqueta, Alvaro - Bartó, Carlos

Formato:	Objeto de conferencia, Objeto de conferencia
Enlaces:	Nowadays, an increasing number of companies are using process improvement models as a mean to improve the quality of their processes and therefore the quality of their products and services. Although various improvement frameworks exist that provide organizations with aids…
Fecha:	2012-10-03
Recurso:	Unversidad Nacional de La Plata

Recurso libre

10.

Design of a service-oriented architecture for federated systems
Calegari, Daniel - Viera, Marcos - Motz, Regina

Formato:	Objeto de conferencia, Objeto de conferencia
Enlaces:	A Federated System is a collection of independent, cooperative, possibly heterogeneous and autonomous computer systems (usually database systems) which allows sharing all or some of its data. A Service-oriented Architecture is an application architecture whose functionalities are defined as independent…
Fecha:	2012-10-29
Recurso:	Unversidad Nacional de La Plata

Recurso libre

11.

Explotando Redundancia para Diseminación Segura de Datos en Redes Inalámbricas de Sensores, Exploiting Redundancy for Secure Data Dissemination in Wireless Sensor Networks
PALAFOX MAESTRE, LUIS E. - GARCÍA MACÍAS, J. ANTONIO

Formato:
Enlaces:	EL MONITOREO DEL MEDIO AMBIENTE ES UNA DE LAS MUCHAS APLICACIONES DE LAS REDES INALÁMBRICAS DE SENSORES. DADO QUE ESTAS REDES ESTÁN DENSAMENTE POBLADAS Y QUE LAS VARIACIONES LOCALES DE VARIABLES AMBIENTALES SON PEQUEÑAS, LOS NODOS DE SENSADO GENERAN UNA…
Fecha:	1969-12-31
Recurso:	Revistas UNAM

Recurso libre

12.

Sensitivity Analisys in Logical-Combinatorial Pattern Recognition
CARRASCO OCHOA, JESÚS ARIEL

Formato:
Enlaces:	IN PATTERN RECOGNITION (FEATURE SELECTION, SUPERVISED CLASSIFICATION, UNSUPERVISED CLASSIFICATON, ETC) DATA MODIFICATIONS ARE VERY COMMON. THIS DUE TO MANY REASONS, FOR EXAMLE: DATA ACQUISITION ERROR FIXING; SPECIALIST CHANGES SAMPLE CLASSIFICATION; ELIMINATION OF SOME DATA; NEW DATA; ETC. THEN, MANY TIME…
Fecha:	1969-12-31
Recurso:	Revistas UNAM

Recurso libre

13.

Information for intercultural context and the importance of good design
Wolff, Kai Ina

Formato:	Electronic Thesis or Dissertation, Tesis
Enlaces:	Salir del país de residencia para vivir en el extranjero significa un gran cambio para la vida de una persona que muchas veces puede ser estresante. Significa vivir en un ambiente extraño, con una cultura diferente, lejos de la…
Fecha:	2005-05-13
Recurso:	CIRIA

Recurso libre

14.

Arquitectura Hardware/Software Paralela para los Algoritmos de Compresión de Datos sin Pérdida BWT y LZ77, Parallel Hardware/Software Architecture for the BWT and LZ77 Lossless Data Compression Algorithms
ZÚÑIGA GRAJEDA, VIRGILIO - FEREGRINO URIBE, CLAUDIA - CUMPLIDO PARRA, RENÉ

Formato:
Enlaces:	HOY EN DÍA, EL USO DE SISTEMAS DE COMUNICACIÓN DIGITALES HA AUMENTADO DE TAL FORMA QUE EL ANCHO DE BANDA EN LAS REDES RESULTA AFECTADO. ESTE PROBLEMA PUEDE SOLUCIONARSE IMPLEMENTANDO ALGORITMOS DE COMPRESIÓN DE DATOS EN DISPOSITIVOS DE COMUNICACIÓN REDUCIENDO…
Fecha:	1969-12-31
Recurso:	Revistas UNAM

Recurso libre

15.

Classifying software requirement prioritization approaches
Martínez Carod, Nadina - Cechich, Alejandra

Formato:	Objeto de conferencia, Objeto de conferencia
Enlaces:	Defining software requirements is a complex and difficult process, which often leads to costly project failures. Requirements emerge from a collaborative and interactive negotiation process that involves heterogeneous stakeholders (people involved in an elicitation process such as users, analysts, developers,…
Fecha:	2012-10-26
Recurso:	Unversidad Nacional de La Plata

Recurso libre

16.

CCMini: a prototype of certifying compiler based on annotated abstract syntax trees
Bavera, Francisco - Nordio, Martín - Medel, Ricardo - Aguirre, Jorge - Baum, Gabriel Alfredo

Formato:	Objeto de conferencia, Objeto de conferencia
Enlaces:	Certifying compilers use static information of a program to verify that it complies with certain security properties and to generate certified code. To do so, those compilers translate the source program into an annotated program written in some intermediate language.…
Fecha:	2012-10-26
Recurso:	Unversidad Nacional de La Plata

Recurso libre

17.

Semantic document indexing in ontology-driven organizational memories
Ale, María Alejandra - Galli, María Rosa - Chiotti, Omar Juan Alfredo

Formato:	Objeto de conferencia, Objeto de conferencia
Enlaces:	Effective document retrieval using domain knowledge and semantics is one of the major challenges in Information Retrieval. Over the last years, there has been a growing interest in ontologies as an artifact for human knowledge representation and a critical component…
Fecha:	2012-10-29
Recurso:	Unversidad Nacional de La Plata

Recurso libre

18.

A UML profile to model classifier refinements
Correa, Natalia - Giandini, Roxana Silvia - Pons, Claudia

Formato:	Objeto de conferencia, Objeto de conferencia
Enlaces:	The refinement technique allows us to capture the relationship between specification and implementation in software developments. The precise documentation of the refinement relations hip makes it possible the traceability of the requirements through the refinement steps. Unfortunately, the standard modelling…
Fecha:	2012-10-29
Recurso:	Unversidad Nacional de La Plata

Recurso libre

19.

Tower generic data processing
Necco, Claudia Mónica - Nuno Olivera, J.

Formato:	Objeto de conferencia, Objeto de conferencia
Enlaces:	Many aspects of data processing are functional in nature and can take advantage of recent developments in the area of functional programming and calculi. The work described in this paper is an attempt to contribute to this line of thought,…
Fecha:	2012-10-29
Recurso:	Unversidad Nacional de La Plata

Recurso libre

20.

Extending message-oriented middleware
Estevez, Elsa Clara - Janowski, Thomas

Formato:	Objeto de conferencia, Objeto de conferencia
Enlaces:	Different types of middleware exist to facilitate the integration of software running on heterogeneous computing platforms. Message Oriented Middleware (MOM), for instance, enables the interaction between heterogeneous applications by exchanging packets of structured data (messages) through communication channels. The core…
Fecha:	2012-10-29
Recurso:	Unversidad Nacional de La Plata

Recurso libre

21.

Management model for measurement infrastructure
Battisti, Gerson - Tarouco, Liane M. R. - Granville, Lisandro

Formato:	Objeto de conferencia, Objeto de conferencia
Enlaces:	The evaluation of metric of performance is useful in the evaluation of protocols, in the improvement of applications, in the content choice, among others. The obtaining of these metrics, it continues being a complex task because most of the time…
Fecha:	2012-10-29
Recurso:	Unversidad Nacional de La Plata

Recurso libre

22.

C-Means Algorithm whit Similarity Functions
GARCÍA SERRANO, JAVIER RAYMUNDO - MARTÍNEZ TRINIDAD, JOSÉ ANTONIO - AYAQUICA MARTÍNEZ, IRENE OLAYA

Formato:
Enlaces:	IN THIS PAPER, AN EXTENSION TO THE C-MEANS ALGORITHM THAT CONSIDERS OBJECT DESCRIPTIONS WITH QUANTITATIVE AND QUALITATIVE FEATURES (MIXED DATA) IS PROPOSE. IN ADDITION, THE ALGORITHM CONSIDERS MISSING DATA. THESE KINDS OF DESCRIPTIONS (MIXED DTA) ARE VERY FRECUENT IN SOFT…
Fecha:	1969-12-31
Recurso:	Revistas UNAM

Recurso libre

23.

Exact and Approximate Prefix Search under Access Locality Requirements for Morphological Analysis and Spelling Correction, La Búsqueda Exacta y Aproximada de Prefijos Bajo los Requerimientos del Acceso Local, para el Análisis Morfológico y Corrección de Ortografía
GELBUKH, ALEXANDER

Formato:
Enlaces:	A DATA STRUCTURE USEFUL FOR PREFIX SEARCH IN A VERY LARGE DICTIONARY WITH AN ANLIMITED QUERY STRING IS DISCUSSED. THIS PROBLEM IS IMPORTANT FOR MORPHOLOGICAL ANALYSIS OF INFLECTIVE LANGUAGES, INCLUDING PARTICULARY DIFFICULT CASES SUCH AS GERMAN WORD CONCATENATION OR JAPANESE…
Fecha:	1969-12-31
Recurso:	Revistas UNAM

Recurso libre

24.

Ohlson model by panel cointegration with Mexican data, El modelo Ohlson mediante cointegración de panel con datos mexicanos
Lorenzo Valdés, Arturo - Durán Vázquez, Rocío

Formato:
Enlaces:	In this study we use cointegration methods to investigate the relationship between the variables of the Ohlson model (stock price, earnings per share and book value) with panel data. The cointegration tests were applied at individual and group level (by…
Fecha:	2010-12-29
Recurso:	Revistas UNAM

Recurso libre

25.

Semantic Similarity between Systems of Geographic Objects Applied to Generalization of Geospatial Data, Similitud Semántica entre Sistemas de Objetos Geográficos Aplicada a la Generalización de Datos Geoespaciales
LEVACHKINE, SERGUEI - MORENO IBARRA, MARCO ANTONIO

Formato:
Enlaces:	THE THESIS PRESENTS AN APPROACH TO VERIFY THE CONSISTENCY OF GENERALIZED GEOSPATIAL DATA AT A CONCEPTUAL LEVEL. THE PRINCIPAL STAGES OF PROPOSED METHODOLOGY ARE ANALYSIS, SYNTHESIS, AND VERIFICATION. ANALYSIS IS FOCUSED ON EXTRACTING THE PECULIARITIES OF SPATIAL RELATIONS BY MEANS…
Fecha:	1969-12-31
Recurso:	Revistas UNAM

Recurso libre

26.

Reconocimiento de Rostros usando Datos No Etiquetados, Face Recognition Using Unlabeled Data
FUENTES, OLAC - MARTÍNEZ, CARMEN

Formato:
Enlaces:	LOS SISTEMAS DE RECONOCIMIENTO DE ROSTROS NORMALMENTE OBTIENEN BUENOS RESULTADOS CUANDO TIENEN DISPONIBLES CONJUNTOS DE ENTRENAMIENTO GRANDES. SIN EMBARGO, CUANDO NO HAY UN CONJUNTO DE ENTRENAMIENTO GRANDE DISPONIBLE, SU DESEMPEÑO NO ES SATISFACTORIO. EN ESTE TRABAJO PRESENTAMOS UN MÉTODO PARA…
Fecha:	1969-12-31
Recurso:	Revistas UNAM

Recurso libre

27.

Requirements elicitation applied to electronic voting system
Thomas, Pablo Javier - Oliveros, Alejandro

Formato:	Objeto de conferencia, Objeto de conferencia
Enlaces:	Nowadays, technology has become the key element to carry out the management, organization and fulfillment of the electoral process. The electoral process should be understood as the actions that entail the making of the electoral roll, citizen identification, the act…
Fecha:	2012-10-26
Recurso:	Unversidad Nacional de La Plata

Recurso libre

28.

Precompilation: an alternative approach to provide native generic programming support in C++
Gutson, Daniel F. - Alarcón, Román

Formato:	Objeto de conferencia, Objeto de conferencia
Enlaces:	In C++, Generative Programming (GP) techniques are being used to generate highly customized and optimized products automatically manufactured at compile-time; to provide these functionalities increasing compiling power is required. This work presents an improved compilation model for C++ by adding…
Fecha:	2012-10-29
Recurso:	Unversidad Nacional de La Plata

Recurso libre

29.

A software product line experience
Andriano, Natalia Valeria - Kirch, Jorge - Zibecchi, Mariano

Formato:	Objeto de conferencia, Objeto de conferencia
Enlaces:	Previous work in software product lines showed an increment of up to 10 times in productivity and product quality [SEI Prod_Line]; because of this, the software product line approach is critical for the success of a development project including a…
Fecha:	2012-10-29
Recurso:	Unversidad Nacional de La Plata

Recurso libre

30.

A managerial framework for an electronic government procurement project: complex software projects management fundamentals
Uzal, Roberto - Montejano, Germán Antonio - Riesco, Daniel Eduardo - Uzal, Javier

Formato:	Objeto de conferencia, Objeto de conferencia
Enlaces:	An Electronic Government Procurement (e-GP) project, as most of complex software systems development and implantation, requires sophisticated and strong managerial concepts and skills. So, an effective and consistent managerial framework is needed. Traditional project management models, that propose a series…
Fecha:	2012-10-29
Recurso:	Unversidad Nacional de La Plata

Recurso libre

31.

A wrapper&mediator prototype for web data warehouses
Giaudrone, Verónica - Guerra, Marcelo - Vaccaro, Marcelo - Motz, Regina - Marotta, Adriana

Formato:	Objeto de conferencia, Objeto de conferencia
Enlaces:	There is a lot of information published on the Web that can be useful for decision-making. The work reported in this paper focuses on how to extract and integrate this information in order to construct a Data Warehouse that makes…
Fecha:	2012-10-29
Recurso:	Unversidad Nacional de La Plata

Recurso libre

32.

Stakeholder selection for business processes support systems in interorganizational environments
Ballejos, Luciana C. - Montagna, Jorge Marcelo

Formato:	Objeto de conferencia, Objeto de conferencia
Enlaces:	This work presents a methodology with basic steps to follow before developing Interorganizational Information Systems (IOSs), which constitute the support for the execution of business processes (BPs) in new structural forms made up of various organizations, called Interorganizational Networks (IONs).…
Fecha:	2012-10-29
Recurso:	Unversidad Nacional de La Plata

Recurso libre

33.

Labor participation and earnings for young women in Argentina
Marchionni, Mariana

Formato:	Articulo, Documento de trabajo
Enlaces:	Este trabajo se concentra en explorar los efectos potenciales de la educación media y el ambiente familiar sobre los resultados laborales de las jóvenes en Argentina. En particular, interesa la condición laboral, la calidad del empleo y los salarios. El…
Fecha:	2010-06-08
Recurso:	Unversidad Nacional de La Plata

Recurso libre

34.

Determinants in university desertion and graduation: an application using duration models
Giovagnoli, Paula Inés

Formato:	Articulo, Articulo
Enlaces:	Este trabajo investiga el problema de la deserción y graduación de los estudiantes universitarios. Se utilizan modelos de riesgo proporcional no paramétricos para estimar los efectos cualitativos y cuantitativos de factores personales y características socioeconómicas de los alumnos sobre las…
Fecha:	2009-06-11
Recurso:	Unversidad Nacional de La Plata

Recurso libre

35.

The multi-agent system architecture in SEWASIE
Fillottrani, Pablo Rubén

Formato:	Articulo, Articulo
Enlaces:	We describe the design, implementation and deployment of the multi-level agent-based system architecture developed for the SEWASIE project. The aim of the system is to help the user in querying heterogeneous data sources which are integrated by means of ontologies.…
Fecha:	2008-05-23
Recurso:	Unversidad Nacional de La Plata

Recurso libre

36.

Quantitative Phylogenetic Analysis in the 21st Century, Análisis Filogenéticos Cuantitativos en el siglo XXI
BILEWITCH, JARET - CONDY, CHARMAINE - EVANS, DAVID C. - FOLINSBEE, KAILA E. - FRÖBISCH, JÖRG - HALAS, DOMINIK - HILL, STEPHANIE - MATTERN, MICHELLE - MC.LENNAN, DEBORAH A. - TSUJI, LINDA A. - WAHLBERG, NIKLAS - WARD, JESSICA L. - ZAMPARO, DAVID - BROOKS, DANIEL R. - ZANATTA, DAVID

Formato:
Enlaces:	WE REVIEW HENNIGIAN PHYLOGENETICS AND COMPARE IT WITH MAXIMUM PARSIMONY, MAXIMUM LIKELIHOOD, AND BAYESIAN LIKELIHOOD APPROACHES. ALL METHODS USE THE PRINCIPLE OF PARSIMONY IN SOME FORM. HENNIGIAN-BASED APPROACHES ARE JUSTIFIED ONTOLOGICALLY BY THE DARWINIAN CONCEPTS OF PHYLOGENETIC CONSERVATISM AND COHESION…
Fecha:	1969-12-31
Recurso:	Revistas UNAM

Recurso libre

37.

Una solución de Aprendizaje Reforzado para ubicar fragmentos replicados en Bases de Datos Distribuidas, A Reinforcement Learning Solution for Allocating Replicated Fragments in a Distributed Database
GONZÁLEZ GONZÁLEZ, LUISA MANUELA - MAINEGRA HING, MARISELA - RODRÍGUEZ MORFFI, ABEL - ROSA PAZ, DARIEN

Formato:
Enlaces:	DEBIDO A LA COMPLEJIDAD DEL PROBLEMA DE LA DISTRIBUCIÓN DE LOS DATOS, LA MAYORÍA DE LAS PROPUESTAS DE SOLUCIÓN PRESENTADAS HASTA LA FECHA HAN COINCIDIDO EN DIVIDIR EL PROCESO DE DISEÑO DE LA DISTRIBUCIÓN EN DOS FASES SERIADAS: LA FRAGMENTACIÓN…
Fecha:	1969-12-31
Recurso:	Revistas UNAM

Recurso libre

38.

Color Matching using Time Series Searching in Color Databases, Pareo de Colores mediante Búsqueda de Series de Tiempo en Bases de Datos de Color
BARRÓN FERNÁNDEZ, R. - CERVANTES ALARCÓN, F. I. - FELIPE RIVERÓN, E.M. - FIGUEROA NAZUNO, JESÚS - GUTIÉRREZ TORNÉS, A. F.

Formato:
Enlaces:	THE GOAL OF THIS PAPER IS TO DOCUMENT THE USE OF TIME SERIES IN COLOR MATCHING. ALTHOUGH TIME SERIES ARE NOT COMMONLY USED FOR THIS PURPOSE, THE RESULTS OBTAINED, BASED ON THE PRINCIPLE OF SIMILARITY IN TIME SERIES USING THE…
Fecha:	1969-12-31
Recurso:	Revistas UNAM

Recurso libre

39.

Electroweak radiative corrections to semileptonic Ï„ decays
ERLER , J.

Formato:	,
Enlaces:	PRESENT AN UPDATE ON THE ELECTROWEAK RADIATIVE CORRECTION FACTOR TO SEMILEPTONIC Ã£ DECAYS, INCLUDING A NEXT-TO-LEADING ORDER RESUMMATION OF LARGE LOGARITHMS. MY RESULT DIFFERS BOTH QUALITATIVELY AND QUANTITATIVELY FROM THE ONE RECENTLY OBTAINED BY DAVIER ET AL.. AS TWO CONSEQUENCES,…
Fecha:	1969-12-31
Recurso:	Revistas UNAM

Recurso libre

40.

Lazy Query Expansion
GELBUKH , ALEXANDER

Formato:
Enlaces:	EQUIVALENCE OF SOME STRINGS. THESE ARE LOWERCASE VERUS UPPERCASE MATCHING, MORPHOLOGICAL INFLECTION, DERIVATION, AND SYNONYMY OF WORDS: E.G. GIVE A QUERY COMPUTER, FIND COMPUTER COMPUTING, WORKSTATION. THE LATTER PROBLEMS ARE VERY IMPORTANT IN LANGUAGES WITH RICHER MORPHOLOGY AND LESS STABLE…
Fecha:	1969-12-31
Recurso:	Revistas UNAM

Recurso libre

41.

Diversidad de mamíferos en los dominios climáticos de la Reserva de la Biosfera Tehuacán-Cuicatlán, México, Mammalian diversity in climatic domains for Tehuacán-Cuicatlán Biosphere Reserve, Mexico
Téllez Valdés, Oswaldo - Farías, Verónica - Dávila Aranda, Patricia - Stein, Janet Louis - Lira Saade, Rafael - Botello, Francisco J.

Formato:
Enlaces:	La reserva de la biosfera Tehuacán-Cuicatlán (BRTC) posee gran diversidad de mamíferos, pero la información sobre distribución geográfica es incompleta para la mayoría de las especies. Esto ha representado una dificultad en esfuerzos previos para modelar el nicho ecológico y…
Fecha:	2010-12-07
Recurso:	Revistas UNAM

Recurso libre

42.

Early meteorological records of Manila: El Niño episode of 1864, Early meteorological records of Manila: El Niño episode of 1864
VAQUERO, J. M. - GALLEGO, M. C. - GARCÍA, J. A.

Formato:	,
Enlaces:	The goal of this contribution is to analyze the meteorological observations that the Spanish friar Antonio Llanos registered during the 1858-1865 period in the Philippines Isles. These records were published 140 years ago but have been ignored until now. The…
Fecha:	1969-12-31
Recurso:	Revistas UNAM

Recurso libre

43.

Spatial interpolation techniques for stimating levels of pollutant concentrations in the atmosphere, Spatial interpolation techniques for stimating levels of pollutant concentrations in the atmosphere
Rojas Avellaneda, D.

Formato:	,
Enlaces:	The inverse distance-weighting method (IDW) and Kriging techniques are the most commonly used spatial interpolation techniques for estimating levels of pollutant concentrations in regions that contain a number of monitoring stations. The measured ozone pollution peaks in a period, in…
Fecha:	1969-12-31
Recurso:	Revistas UNAM

Recurso libre

44.

Computing Symbolic Expressions in Analog Circuits Using Nullors, Cálculo de Expresiones Simbólicas en Circuitos Analógicos usando Anuladores
SÁNCHEZ LÓPEZ, CARLOS - SANDOVAL IBARRA, FEDERICO - TLELO CUATLE, ESTEBAN

Formato:
Enlaces:	A NOVEL METHOD IS INTRODUCED TO COMPUTE SYMBOLIC EXPRESSIONS IN ANALOG CIRCUITS MODELED BY NULLORS. THE PROPOSED METHOD IS BASED ON THE FORMULATION OF A COMPACT SYSTEM OF EQUATIONS (CSES) BY MANIPULATION OF DATA-STRUCTURES, WHICH HIGHLY IMPROVES TRADITIONAL SYMBOLIC-METHODS. IT…
Fecha:	1969-12-31
Recurso:	Revistas UNAM

Recurso libre

45.

Design of a service-oriented architecture for federated systems
Calegari, Daniel - Viera, Marcos - Motz, Regina

Formato:	Articulo, Articulo
Enlaces:	A Federated System is a collection of independent, cooperative, possibly heterogeneous and autonomous computer systems (usually database systems) which allows sharing all or some of its data. A Service-Oriented Architecture is an application architecture whose functionalities are defined as independent…
Fecha:	2008-05-23
Recurso:	Unversidad Nacional de La Plata

Recurso libre

46.

Global and diffuse radiation at the surface (1978-1985) Evidence of El Nino and El Chichon, Global and diffuse radiation at the surface (1978-1985) evidence o El Niño and El Chichon
GAY GARCIA, CARLOS - CONDE ÁLVAREZ, C.

Formato:	,
Enlaces:	Solar radiation data (global and diffuse) provided by the Solar Radiation Observatory of the Institute of Geophysics of the National University of Mexico, corresponding to the period 1980 to 1985, are analyzed. Two sets of data where selected. The first…
Fecha:	1969-12-31
Recurso:	Revistas UNAM

Recurso libre

47.

Trade and labor outcomes in Latin America's rural areas: a cross-household surveys approach
Gasparini, Leonardo - Gutiérrez, Federico H. - Porto, Guido

Formato:	Articulo, Documento de trabajo
Enlaces:	Este trabajo explora la conexión entre el comercio y los resultados laborales en áreas rurales de América Latina al estimar modelos de regresión a nivel de hogar utilizando una combinación de microdatos de 60 encuestas de hogares y datos agregados.…
Fecha:	2010-06-08
Recurso:	Unversidad Nacional de La Plata

Recurso libre

48.

Calculation and measurements of infrared radiation at the surface, Calculation and measurements of infrared radiation at the surface
GAY GARCIA, CARLOS - CONDE ALVAREZ, C.

Formato:	,
Enlaces:	Infrared radiation data for the period 1980-1987 obtained at the Solar Radiation Observatory of the Institute of Geophysics of the National University of Mexico, is analyzed with the help of empirical and theoretical models for the transfer of long wave…
Fecha:	1969-12-31
Recurso:	Revistas UNAM

Recurso libre

49.

An equation relating temporal changes of relative humidity and temperature case of variable intervals of time, An equation relating temporal changes of relative humidity and temperature: case of variable intervals of time
LABAJO SALAZAR, J. L. - DE PABLO, F. - GARCÍA, E. L.

Formato:	,
Enlaces:	ESTE TRABAJO ESTA DIRIGIDO A ESTABLECER SI LA RELACIÓN LINEAL H2-H1=-0,03-3,586(T2-T1), QUE SE SUPONE VALIDA EN CUALQUIER PUNTO DE LA TIERRA Y EN CUALQUIER ÉPOCA DEL AÑO, Y CUYOS COEFICIENTES SE OBTIENEN HACIENDO USO DE SERIES SINCRONÍAS DE DATOS TRIHORARIOS…
Fecha:	1969-12-31
Recurso:	Revistas UNAM

Recurso libre

50.

Phylogenetic studies of the Spiridentaceae (Musci): Observations of three morphological characters associated with pleurocarpy, Phylogenetic studies of the Spiridentaceae (Musci): Observations of three morphological characters associated with pleurocarpy
WITHEY, ALISON

Formato:	,
Enlaces:	CLADISTIC ANALYSIS OF RBCL SEQUENCE DATA SUGGEST THAT THE SPIRIDENTACEAE BELONG TO A DISTINCT PLEUROCARPOUS LINEAGE THAT IS PHYLOGENETICALLY INDEPENDENT OF OTHER PLEUROCARPUS MOSSES. AS THE RBCL DATA SUGGEST A NOVEL SET OF TAXA ALLIED WITH THE SPIRIDENTACEAE, IT IS…
Fecha:	1969-12-31
Recurso:	Revistas UNAM