4,947 research outputs found

    Data reduction in the ITMS system through a data acquisition model with self-adaptive sampling rate

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    Long pulse or steady state operation of fusion experiments require data acquisition and processing systems that reduce the volume of data involved. The availability of self-adaptive sampling rate systems and the use of real-time lossless data compression techniques can help solve these problems. The former is important for continuous adaptation of sampling frequency for experimental requirements. The latter allows the maintenance of continuous digitization under limited memory conditions. This can be achieved by permanent transmission of compressed data to other systems. The compacted transfer ensures the use of minimum bandwidth. This paper presents an implementation based on intelligent test and measurement system (ITMS), a data acquisition system architecture with multiprocessing capabilities that permits it to adapt the system’s sampling frequency throughout the experiment. The sampling rate can be controlled depending on the experiment’s specific requirements by using an external dc voltage signal or by defining user events through software. The system takes advantage of the high processing capabilities of the ITMS platform to implement a data reduction mechanism based in lossless data compression algorithms which are themselves based in periodic deltas

    Web based system architecture for long pulse remote experimentation

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    Remote experimentation (RE) methods will be essential in next generation fusion devices. Requirements for long pulse RE will be: on-line data visualization, on-line data acquisition processes monitoring and on-line data acquisition systems interactions (start, stop or set-up modifications). Note that these methods are not oriented to real-time control of fusion plant devices. INDRA Sistemas S.A., CIEMAT (Centro de Investigaciones Energéticas Medioambientales y Tecnológicas) and UPM (Universidad Politécnica de Madrid) have designed a specific software architecture for these purposes. The architecture can be supported on the BeansNet platform, whose integration with an application server provides an adequate solution to the requirements. BeansNet is a JINI based framework developed by INDRA, which makes easy the implementation of a remote experimentation model based on a Service Oriented Architecture. The new software architecture has been designed on the basis of the experience acquired in the development of an upgrade of the TJ-II remote experimentation system

    Fundamental Principles and Rights At Work: Value, Viability, Incidence and Importance as Elements For Economic Progress and Social Justice

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    Working Paper prepared for the ILO by Maria Luz Vega Ruiz and Daniel Martinez, focusing on the rights at work in Latin America and the Caribbean

    Exact Bethe Ansatz solution for An1A_{n-1} chains with non-SUq(n)SU_{q}(n) invariant open boundary conditions

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    The Nested Bethe Ansatz is generalized to open and independent boundary conditions depending on two continuous and two discrete free parameters. This is used to find the exact eigenvectors and eigenvalues of the An1A_{n-1} vertex models and SU(n)SU(n) spin chains with such boundary conditions. The solution is found for all diagonal families of solutions to the reflection equations in all possible combinations. The Bethe ansatz equations are used to find de first order finite size correction.Comment: Two references adde

    “Theriaca Magna” y la “Opiata de Masdevall”, a través de las memorias de la Real Academia de Medicina y Cirugía de Cádiz

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    · Objetivos e hipótesis. El propósito de este trabajo es visualizar las propiedades de la “Theriaca Magna” y de la “Opiata de Masdevall”, según el estudio de Francisco Gutiérrez. Profesor de Farmacia, fraile del convento de San Juan de Dios de Cádiz, así como de la censura realizada al referido estudio por el doctor Alonso García Jurado, profesor de Farmacia y académico de número de la Real Academia de Medicina y Cirugía de Cádiz. · Método: se realiza el estudio de la “Theriaca Magna” y de la “Opiata de Masdevall” de las que Fray Francisco Gutiérrez afirma que conservan muchas propiedades que las hacen recomendables; de la censura de encargará el Doctor Alonso García Jurado, el cual descubrirá la composición dando de la “Opiata de Masdevall” como de la “Theriaca Magna”, a la vez que recalca la importancia de la Farmacia para la Medicina. · Fuente: la constituyen dos memorias manuscritas de la Real Academia de Medicina y Cirugía de Cádiz, correspondientes al siglo XIX. Esta documentación ha sido localizada en el Archivo de la Real Academia de Medicina y Cirugía de Cádiz.• Objectives and assumptions. The purpose of this paper is to visualize the properties of "Theriaca Magna" and "Opiata of Masdevall", according to the study by Francisco Gutierrez. Professor of Pharmacy, friar of the convent of San Juan de Dios de Cadiz, as well as censorship referred to the study conducted by Dr. Alonso Garcia Jurado, a professor of pharmacology and academic number of the Royal Academy of Medicine and Surgery in Cadiz. • Method: is the study of "Theriaca Magna" and "Opiata of Masdevall" which Fray Francisco Gutierrez asserts that kept many properties that make them recommended; responsible for the censorship of Dr. Alonso Garcia Jury, which discover composition giving the "Opiata of Masdevall" and the "Theriaca Magna", while stressing the importance of the pharmacy for medicine. • Source: are two handwritten memoirs of the Royal Academy of Medicine and Surgery of Cadiz, for the nineteenth century. This documentation has been located in the archives of the Royal Academy of Medicine and Surgery in Cadiz

    Exact solution of the SUq(n)SU_{q}(n) invariant quantum spin chains

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    The Nested Bethe Ansatz is generalized to open boundary conditions. This is used to find the exact eigenvectors and eigenvalues of the An1A_{n-1} vertex model with fixed open boundary conditions and the corresponding SUq(n)SU_{q}(n) invariant hamiltonian. The Bethe Ansatz equations obtained are solved in the thermodynamic limit giving the vertex model free energy and the hamiltonian ground state energy including the corresponding boundary contributions.Comment: 29 page

    Topografía médica de la isla de Joló (Filipinas), según la documentación existente en la Real Academia de Medicina y Cirugía de Cádiz

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    · Objetivos e hipótesis. En este estudio, pretendemos divulgar las producciones naturales de la isla de Joló, en el siglo XIX, según Joaquín Solano, académico de número de la Real Academia de Medicina y Cirugía de Cádiz; primer profesor Médico- Cirujano de la Armada Nacional, en su etapa de embarcado en el Navío de la Real Compañía de Filipinas “San José”. · Método: se describe la isla de Joló (Filipinas), sus habitantes, sus creencias, sus productos naturales, como perlas, ámbar, etc., sus pájaros, especialmente uno muy pequeño, que realiza su nido con la espuma y la babaza del mar, sobre las rocas y arrecifes. Este nido es utilizado por los habitantes de esta zona como alimento, preparado en sopa. Entre sus enfermedades destaca las “evacuaciones”, debidas a la mala alimentación, las “miasmas”, las altas temperaturas; este trabajo correspondiente a Joaquín Solano Pasos se acompaña de censura sin firma. · Fuente: la constituye una memoria de la Real Academia de Medicina y Cirugía de Cádiz, correspondiente al siglo XIX, siendo Joaquín Solano Pasos. La documentación ha sido localizada en el Archivo de la Real Academia de Medicina y Cirugía de Cádiz y siendo su autor el Académico de numero Joaquín Solano Pasos.• Objectives and assumptions. In this study, we intend to publicize productions natural Island Joló, in the nineteenth century, according to Joaquin Solano, academic number of the Royal Academy of Medicine and Surgery of Cadiz; first teacher Médico- Cirujano of the Navy, in its stage embarked on Navío of the Royal Company of the Philippines' San Jose. " • Method: the island is described of Joló (Philippines), its people, their beliefs, their natural products, such as pearls, amber, and so on. Their birds, especially a very small, which makes its nest in the foam and babaza of sea, on the rocks and reefs. This nest is used by the inhabitants of this area as food prepared in soup. Among his illness highlights the "eviction", due to poor diet, "miasmas," high temperatures; this work for Joaquin Solano Steps is accompanied by censorship unsigned. • Source: a report by the Royal Academy of Medicine and Surgery of Cadiz, for the nineteenth century, with Joaquin Solano Steps. The documentation has been located in the archives of the Royal Academy of Medicine and Surgery of Cadiz and is the author of the Academic number Joaquin Solano Steps

    Soybean phenology and yield as influenced by environmental and management factors

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    Variation in phenological, morphological and physiological traits related to seed yield in soybeans may be the result of environmental and management factors. Therefore, information available from previous planting date and cultivar studies in Iowa, and information collected from a field experiment established in 1983, were used in this study;According to simple correlation analyses, environmental factors related to crop phenology and yield better than the management factors. Planting date was the only management factor strongly related to crop phenology and yield, but its influence was only indirect, as planting date determines the crop environment to a great extent;The duration of all the phenological events studied, except the length of the vegetative period, was strongly related to heat units. This may indicate that photoperiod effects are stronger in the preflowering phase. The length of the vegetative phase and the length of the period from beginning bloom to beginning seed were reduced as a result of drought stress. On the other hand, the length of the seed filling period was increased as a result of drought stress. Further research under strictly controlled drought levels is required, however;Relative leaf growth rate was positively correlated to relative growth rate. Both variables were inversely related to heat units and solar radiation. Leaf growth rate was positively correlated with total plant weight at beginning seed and negatively correlated with planting date;Results from the field experiment and path coefficient analysis seemed to support a causal scheme where the total plant weight at beginning seed determines seed number directly and duration of the effective seed filling period indirectly. A multiple regression equation having seed number and effective filling period as predictor variables for seed yield gave an R(\u272) = 0.86. The amount of total variation in seed yield explained by each of these variables was 66 and 20%, respectively;Covariation in seed size and seed number explained yield differences between new and old cultivars

    Event Recognition Using Signal Spectrograms in Long Pulse Experiments

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    As discharge duration increases, real-time complex analysis of the signal becomes more important. In this context, data acquisition and processing systems must provide models for designing experiments which use event oriented plasma control. One example of advanced data analysis is signal classification. The off-line statistical analysis of a large number of discharges provides information to develop algorithms for the determination of the plasma parameters from measurements of magnetohydrodinamic waves, for example, to detect density fluctuations induced by the Alfvén cascades using morphological patterns. The need to apply different algorithms to the signals and to address different processing algorithms using the previous results necessitates the use of an event-based experiment. The Intelligent Test and Measurement System platform is an example of architecture designed to implement distributed data acquisition and real-time processing systems. The processing algorithm sequence is modeled using an event-based paradigm. The adaptive capacity of this model is based on the logic defined by the use of state machines in SCXML. The Intelligent Test and Measurement System platform mixes a local multiprocessing model with a distributed deployment of services based on Jini

    El Reto del trabajo global

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