997 resultados para Negative integration


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Esta gu??a ha contado con el apoyo del Programa S??crates de la Comisi??n Europea y es una traducci??n al ingl??s editada separadamente de la versi??n espa??ola

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Integration of inputs by cortical neurons provides the basis for the complex information processing performed in the cerebral cortex. Here, we propose a new analytic framework for understanding integration within cortical neuronal receptive fields. Based on the synaptic organization of cortex, we argue that neuronal integration is a systems--level process better studied in terms of local cortical circuitry than at the level of single neurons, and we present a method for constructing self-contained modules which capture (nonlinear) local circuit interactions. In this framework, receptive field elements naturally have dual (rather than the traditional unitary influence since they drive both excitatory and inhibitory cortical neurons. This vector-based analysis, in contrast to scalarsapproaches, greatly simplifies integration by permitting linear summation of inputs from both "classical" and "extraclassical" receptive field regions. We illustrate this by explaining two complex visual cortical phenomena, which are incompatible with scalar notions of neuronal integration.

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-Industrial product maturity impact on manufacturing -What is manufacturing system design -The manufacturing system design framework

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This white paper reports emerging findings at the end of Phase I of the Lean Aircraft Initiative in the Policy focus group area. Specifically, it provides details about research on program instability. Its objective is to discuss high-level findings detailing: 1) the relative contribution of different factors to a program’s overall instability; 2) the cost impact of program instability on acquisition programs; and 3) some strategies recommended by program managers for overcoming and/or mitigating the negative effects of program instability on their programs. Because this report comes as this research is underway, this is not meant to be a definitive document on the subject. Rather, is it anticipated that this research may potentially produce a number of reports on program instability-related topics. The government managers of military acquisition programs rated annual budget or production rate changes, changes in requirements, and technical difficulties as the three top contributors, respectively, to program instability. When asked to partition actual variance in their program’s planned cost and schedule to each of these factors, it was found that the combined effects of unplanned budget and requirement changes accounted for 5.2% annual cost growth and 20% total program schedule slip. At a rate of approximately 5% annual cost growth from these factors, it is easy to see that even conservative estimates of the cost benefits to be gained from acquisition reforms and process improvements can quickly be eclipsed by the added cost associated with program instability. Program management practices involving the integration of stakeholders from throughout the value chain into the decision making process were rated the most effective at avoiding program instability. The use of advanced information technologies was rated the most effective at mitigating the negative impact of program instability.

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Each player in the financial industry, each bank, stock exchange, government agency, or insurance company operates its own financial information system or systems. By its very nature, financial information, like the money that it represents, changes hands. Therefore the interoperation of financial information systems is the cornerstone of the financial services they support. E-services frameworks such as web services are an unprecedented opportunity for the flexible interoperation of financial systems. Naturally the critical economic role and the complexity of financial information led to the development of various standards. Yet standards alone are not the panacea: different groups of players use different standards or different interpretations of the same standard. We believe that the solution lies in the convergence of flexible E-services such as web-services and semantically rich meta-data as promised by the semantic Web; then a mediation architecture can be used for the documentation, identification, and resolution of semantic conflicts arising from the interoperation of heterogeneous financial services. In this paper we illustrate the nature of the problem in the Electronic Bill Presentment and Payment (EBPP) industry and the viability of the solution we propose. We describe and analyze the integration of services using four different formats: the IFX, OFX and SWIFT standards, and an example proprietary format. To accomplish this integration we use the COntext INterchange (COIN) framework. The COIN architecture leverages a model of sources and receivers’ contexts in reference to a rich domain model or ontology for the description and resolution of semantic heterogeneity.

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This white paper reports emerging findings at the end of Phase I of the Lean Aircraft Initiative in the Policy focus group area. Specifically, it provides details about research on program instability. Its objective is to discuss high-level findings detailing: 1) the relative contribution of different factors to a program’s overall instability; 2) the cost impact of program instability on acquisition programs; and 3) some strategies recommended by program managers for overcoming and/or mitigating the negative effects of program instability on their programs. Because this report comes as this research is underway, this is not meant to be a definitive document on the subject. Rather, is it anticipated that this research may potentially produce a number of reports on program instability-related topics. The government managers of military acquisition programs rated annual budget or production rate changes, changes in requirements, and technical difficulties as the three top contributors, respectively, to program instability. When asked to partition actual variance in their program’s planned cost and schedule to each of these factors, it was found that the combined effects of unplanned budget and requirement changes accounted for 5.2% annual cost growth and 20% total program schedule slip. At a rate of approximately 5% annual cost growth from these factors, it is easy to see that even conservative estimates of the cost benefits to be gained from acquisition reforms and process improvements can quickly be eclipsed by the added cost associated with program instability. Program management practices involving the integration of stakeholders from throughout the value chain into the decision making process were rated the most effective at avoiding program instability. The use of advanced information technologies was rated the most effective at mitigating the negative impact of program instability.

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In this paper, we consider the ATM networks in which the virtual path concept is implemented. The question of how to multiplex two or more diverse traffic classes while providing different quality of service requirements is a very complicated open problem. Two distinct options are available: integration and segregation. In an integration approach all the traffic from different connections are multiplexed onto one VP. This implies that the most restrictive QOS requirements must be applied to all services. Therefore, link utilization will be decreased because unnecessarily stringent QOS is provided to all connections. With the segregation approach the problem can be much simplified if different types of traffic are separated by assigning a VP with dedicated resources (buffers and links). Therefore, resources may not be efficiently utilized because no sharing of bandwidth can take place across the VP. The probability that the bandwidth required by the accepted connections exceeds the capacity of the link is evaluated with the probability of congestion (PC). Since the PC can be expressed as the CLP, we shall simply carry out bandwidth allocation using the PC. We first focus on the influence of some parameters (CLP, bit rate and burstiness) on the capacity required by a VP supporting a single traffic class using the new convolution approach. Numerical results are presented both to compare the required capacity and to observe which conditions under each approach are preferred

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This paper presents the use of a mobile robot platform as an innovative educational tool in order to promote and integrate different curriculum knowledge. Hence, it is presented the acquired experience within a summer course named ldquoapplied mobile roboticsrdquo. The main aim of the course is to integrate different subjects as electronics, programming, architecture, perception systems, communications, control and trajectory planning by using the educational open mobile robot platform PRIM. The summer course is addressed to a wide range of student profiles. However, it is of special interests to the students of electrical and computer engineering around their final academic year. The summer course consists of the theoretical and laboratory sessions, related to the following topics: design & programming of electronic devices, modelling and control systems, trajectory planning and control, and computer vision systems. Therefore, the clues for achieving a renewed path of progress in robotics are the integration of several knowledgeable fields, such as computing, communications, and control sciences, in order to perform a higher level reasoning and use decision tools with strong theoretical base

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El medio Ambiente es el espacio donde el ser humano se desarrolla y por medio del cual sustenta su vida. Por tanto de su conservación depende el bienestar del hombre y demás seres vivos que habitan la tierra. Sin embargo la actividad humana está ejerciendo un impacto negativo ambiental. Por ésta razón los distintos gobiernos están tomando medidas para tratar de llevar a cabo políticas que estén en armonía con un desarrollo económico, ecológico y sustentable, de tal manera que se pueda satisfacer las necesidades de la generación presente sin comprometer las necesidades de las generaciones futuras, para atender sus propias necesidades.Razón por la que se crea La agenda ambiental andina ya que la subregión andina es una de las zonas con más riqueza natural y cultural en el mundo.

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Exercises and solutions on double integration. Diagrams for the questions are all together in the support.zip file, as .eps files

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El pasado Mundial de Fútbol Categoría Sub-20 fue una gran oportunidad que tuvo Colombia para seguir mostrándose a nivel internacional y para mejorar su imagen negativa de ser un país violento. Debido al éxito de este evento, y que estuvo a la altura de los de su tipo, ya que también superó en record de asistencia a los que se habían realizado anteriormente (FIFA.COM, 2011), y sumado a las declaraciones del presidente de la FIFA: "Colombia está preparada para la gran Copa Mundial de FIFA, pero de momento deberá esperar hasta el año 2026, porque las sedes de los años 2014 (Brasil), 2018 (Rusia) y 2022 (Qatar) ya están asignadas" (Semana, 2011); este trabajo pretende analizar con base en los principales indicadores (infraestructuras, movilidad, vías, ciudades, seguridad), si Bogotá podría ser sede principal del mundial de fútbol del 2026. Para lograr el objetivo se tomaron como referencia los diferentes mundiales anteriormente realizados. Se hizo un análisis comparativo entre Johannesburgo (sede principal del Mundial realizado en Suráfrica en el 2010) y Bogotá, en 5 factores que permiten visualizar las fortalezas y debilidades de la capital colombiana para poder ser sede principal de un Mundial. Se presentan conclusiones.

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En la actualidad, las economías mundiales y el país se encuentran en un proceso de desarrollo donde se contemplan grandes cambios y oportunidades de negocios en el ámbito del comercio internacional, especialmente, en el espacio delimitado como la Cuenca del Pacifico. En este punto, el Puerto de Buenaventura juega un papel fundamental, frente a esta integración económica dada su ubicación como punto multifuncional para el adecuado desempeño de toda la logística internacional. Por esta razón, es necesario que Colombia cuente con una infraestructura portuaria que responda de manera eficiente a los diferentes retos que trae consigo la radicación de nuevos Tratados de Libre Comercio. Para efectos de esta investigación, se dio a conocer la situación actual del puerto, analizando cada uno de sus puntos críticos en relación a su infraestructura y flujo de operaciones portuarias. Para esto, se llevaron a cabo varias comparaciones con los puertos correspondientes a los países más influyentes del Pacifico, incluso, se tuvieron en cuenta puertos nacionales como el de Cartagena dada su influencia y constante desarrollo. Todo lo anterior con el fin de diagnosticar a través del análisis de diferentes variables, aspectos tanto positivos como negativos que ayudarán a tener un panorama más detallado en términos de infraestructura portuaria; permitiendo el óptimo desarrollo de nuevas estrategias centralizadas en mejorar los niveles de competitividad del país.

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El distanciamiento presidencial entre Colombia y Venezuela, dejó problemas de orden económico, político y social en la frontera de Cúcuta (Colombia) y San Antonio del Táchira (Venezuela). Estas implicaciones negativas se deben a las diferencias de concebir la seguridad y la integración por parte de los presidentes de turno, Hugo Chávez y Alvaro Uribe.

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In their second year, our undergraduate web scientists undertake a group project module (WEBS2002, led by Jonathon Hare & co-taught by Su White) in which they get to apply what they learnt in the first year to a practical web-science problem, and also learn about team-working. For the project this semester, the students were provided with a large dataset of geolocated images and associated metadata collected from the Flickr website. Using this data, they were tasked with exploring what this data could tell us about the world. In this seminar the two groups will present the outcomes of their work. Team Alpha (Ellie Hamilton, Clayton Jones & Alok Acharya) will present their work on "The relationship between Group Photos, Social Integration and Suicide". This work aims to explore whether levels of social integration (which Durkheim posited as a factor in "Egoistic Suicide" rates) can be predicted by measuring the proportion of photos of groups of people to photos of individuals within a geographical region. Team Bravo (Agnieszka Grzesiuk-Szolucha, Thomas Leese & Ammaar Tawil) will present their work on "Sentiment Analysis on Flickr Photo Tags to Classify a Photo as Positive or Negative, In Order to Determine the Happiness of a Country or Region". This work explores whether estimates of sentiment made by applying SentiWordNet to Flickr tags correlate with indices of world happiness and socio-economic well-being.