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Search Results: 1 - 10 of 14012 matches for " biosignal data formats "
All listed articles are free for downloading (OA Articles)
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Stimfit: quantifying electrophysiological data with Python
Segundo J. Guzman,Alois Schl?gl,Christoph Schmidt-Hieber
Frontiers in Neuroinformatics , 2014, DOI: 10.3389/fninf.2014.00016
Abstract: Intracellular electrophysiological recordings provide crucial insights into elementary neuronal signals such as action potentials and synaptic currents. Analyzing and interpreting these signals is essential for a quantitative understanding of neuronal information processing, and requires both fast data visualization and ready access to complex analysis routines. To achieve this goal, we have developed Stimfit, a free software package for cellular neurophysiology with a Python scripting interface and a built-in Python shell. The program supports most standard file formats for cellular neurophysiology and other biomedical signals through the Biosig library. To quantify and interpret the activity of single neurons and communication between neurons, the program includes algorithms to characterize the kinetics of presynaptic action potentials and postsynaptic currents, estimate latencies between pre- and postsynaptic events, and detect spontaneously occurring events. We validate and benchmark these algorithms, give estimation errors, and provide sample use cases, showing that Stimfit represents an efficient, accessible and extensible way to accurately analyze and interpret neuronal signals.
Proprietary vs. General Data Formats: Opportunity for Librarians
James Schroeder
Journal of eScience Librarianship , 2012,
Abstract: A commentary on concerns raised in Jen Ferguson's article in this issue, "Lurking in the Lab: Analysis of Data from Molecular Biology Laboratory Instruments."
Seguimiento Microbiológico: estrategia para el mejoramiento del registro de la información en los procesos microbiológicos
López,Jaime Alberto; Cuartas,Mónica Cecilia; Molina,Olga Lucía; Restrepo,Ana Cristina; Maya,Claudia Yarely; Jaramillo,Sergio;
Biomédica , 2004,
Abstract: the improvement of microbiological information processing in clinical laboratories depends on retention of information concerning who, what, when, how, and why each process was performed, the implementation of quality control procedures, and finally, its evaluation. the four objectives to be addressed are as follows: (1) to improve the collection of information concerned with microbiological processes, (2) to evaluate results of implemented strategies, (3) to offer a model data base to be used in research projects, and (4) to propose an evaluation model for comparative studies. to do this, microbiological cultures were collected from hospitalized patients from june 1997 to june 2003. data for the analytical matrix were obtained from lab requests, medical history and the microbiological data. statistical analyses were performed in epi-info 6. the laboratory records for 46,072 microbiological cultures were analyzed. completion levels in data collection were compared between years 1997 and 2003. samples from 1997 and 2003 showed 11% and 99% of the request forms specifically requesting microbiological culture, 11% and 99% were completed in 1997 and 2003, respectively. for the same years, 9% and 85% specifically stated the time of the request. ten percent and 68%, respectively, provided complete information. zero and 83% respectively stated who had collected the sample. zero and 77%, respectively, specified the time of sample collection. forms containing all relevent microbiological data were most complete with 78% and 96%, respectively. a database with 44 variables related to microbiological processes was created. in conclusion, improvement of microbiological data processing depends not only on the method of collection and completion of recorded information, but also on constant quality control and evaluation.
Las memorias holográficas como nuevo soporte de documentos audiovisuales
García Santiago, Lola;
Investigación bibliotecológica , 2006,
Abstract: compared to the actual optical and magnetic supports which can store information on the surface of receptive materials, holography has completely changed the concepts of recording and storage. although this technology has existed for decades it is almost unknown and the way it operates remains a mystery. this paper describes the holographic storage technique and its potential in the field of information and documentation. its multiple advantages are outlined as well as some present problems.
Schema-Based Compression of XML Data with Relax NG
Christopher League,Kenjone Eng
Journal of Computers , 2007, DOI: 10.4304/jcp.2.10.9-17
Abstract: The extensible markup language XML has become indispensable in many areas, but a significant disadvantage is its size: tagging a set of data increases the space needed to store it, the bandwidth needed to transmit it, and the time needed to parse it. We present a new compression technique based on the document type, expressed as a Relax NG schema. Assuming the sender and receiver agree in advance on the document type, conforming documents can be transmitted extremely compactly. On several data sets with high tag density this technique compresses better than other known XML-aware compressors, including those that consider the document type.
Migration to Intermediate XML for Electronic Data (MIXED)
DIRK ROORDA,
DIRK
,ROORDA

现代图书情报技术 , 2008,
Abstract: MIXED is a digital preservation project. It uses a strategy of converting data to intermediate XML. In this paper we position this strategy with respect to the well-known emulation and migration strategies. Then we detail the MIXED strategy and explain why it is an optimized, economical way of migration. Finally, we describe how DANS is implementing a software tool that can perform the migrations needed for this strategy.
Tipo abstracto de datos "Biblioteca"
Temesio Vizoso,Silvana;
Informaci?3n, cultura y sociedad , 2010,
Abstract: analysis of bibliographic description from a conceptual point of view from the formal specification: "library" abstract data type. other approaches are detailed using the entity-relationship model and xml language. we conclude the relevance of abstract approach and its general applicability in a subject of constant change.
García Melero, Luis ángel; García Camarero, Ernesto. Automatización de bibliotecas. Madrid: Arco/Libros, 1999. 285 p. (Instrumenta bibliologica). ISBN 84-7635-351-0.
Estivill Rius, Assumpció
BiD : Textos Universitaris de Biblioteconomia i Documentació , 1999,
Abstract: Ressenya del manual 'Automatización de bibliotecas', realitzat per Luis ángel García Melero i Ernesto García Camarero. El document inicia amb una descripció general de biblioteca, seguit per les seves tasques tècniques, informació bibliogràfica i d'accés al document, sempre tenint en compte el compliment de les normatives i des del punt de vista de l'automatització.
Las memorias holográficas como nuevo soporte de documentos audiovisuales Holographic memories as new format for storing audiovisual documents
Lola García Santiago
Investigación bibliotecológica , 2006,
Abstract: Frente a los actuales soportes ópticos y magnéticos que pueden almacenar información en la superficie del material sensible utilizado, la holografía ha revolucionado los conceptos de grabación y almacenamiento. A pesar de las cuatro décadas que lleva existiendo esta tecnología, es aún poco conocida y su forma de operar constituye un misterio. Este artículo da a conocer la técnica del almacenamiento holográfico y la situación actual, así como el potencial de las memorias holográficas en el campo de la información y la documentación. Se presentan las múltiples ventajas que posee la memoria holográfica y sus inconvenientes, que se tratan de solventar experimentando con diversos mecanismos y nuevos soportes de grabación. Compared to the actual optical and magnetic supports which can store information on the surface of receptive materials, holography has completely changed the concepts of recording and storage. Although this technology has existed for decades it is almost unknown and the way it operates remains a mystery. This paper describes the holographic storage technique and its potential in the field of information and documentation. Its multiple advantages are outlined as well as some present problems.
Joint Bidding under Capacity Constraints  [PDF]
Beatriz De Otto-López
Applied Mathematics (AM) , 2011, DOI: 10.4236/am.2011.210178
Abstract: In this paper we analyze the anticompetitive effects of concentration of ownership in auction markets. We compare two different auction formats with uniform price. In the first, the price equals the highest accepted bid, whereas in the second the price equals the lowest rejected bid. For the former, and for a two-unit, two-plants, two-firms model, we find an equilibrium where all plants (all firms) bid according to a common bidding function. The concentration of the ownership has the same effect on the bidding behavior as eliminating one plant. However, the expected price is lower than the one expected in such three independent plant scenario. More surprisingly (and special to this 2 × 2 × 2 case), the equilibrium is efficient. In the latter, alternative auction format, firms bids asymmetrically for its two plants. Hence, the equilibrium is inefficient. Also, with this format, we show that the market price may be arbitrarily large. Thus, and contrary to some plausible expectation base in received auction theory, a (sealed-bid) auction format in which the price for a bidder is unrelated to his bid becomes less efficient than one in which the price may coincide with that bidder’s bid, when one admits that several bidders may coordinate (through ownership) their bids. The results add to a literature that favors more winner’s-bid pricing rules.
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