Search results for "Device"
showing 10 items of 1286 documents
Scope-Oriented Thermoeconomic analysis of energy systems. Part I: Looking for a non-postulated cost accounting for the dissipative devices of a vapou…
2010
Abstract The authors of the main thermoeconomic methodologies developed in the last two decades have recently focused their efforts on the analysis of dissipative devices, i.e. those components whose productive purpose is neither intuitive nor easy to define. Coherent and unanimously accepted cost structures have been identified for dissipative components, while ambiguities still exist as concerns the cost allocation principles to be adopted. Being this aspect evidently cost-influencing, accurate analyses focused on the subjectivity of results are needed. This paper is structured in two parts. In the Part I an in-depth study of some critical issues arising from the thermoeconomic analysis o…
Generación de preguntas sobre información no textual : una validación empírica del modelo obstáculo-meta en la comprensión de dispositivos experiment…
2014
RESUMEN: Los mecanismos cognitivos de la generación de preguntas no son aún bien conocidos. Recientemente, se ha propuesto el modelo obstáculo-meta que asimila la comprensión a un proceso de resolución de un problema cognitivo, cuyos obstáculos hacia la meta pretendida dan lugar a las preguntas. Una predicción del modelo es la relación entre tipos de preguntas formuladas y tipos de representación mental que los sujetos manejan durante la comprensión de la información suministrada. Hasta ahora, esta predicción ha sido validada parcialmente y solo con información textual. En este trabajo se presenta un estudio empírico de validación más fiable de esta predicción, desarrollado en dos fases y q…
Long-period grating assisted fractional differentiation of highly chirped light pulses
2016
We experimentally demonstrate the possibility to perform a fractional differentiation of arbitrary order on a given light pulse by propagation through a single long-period grating. A simple analytical expression is obtained also, relating the fractional order of differentiation with the parameters of the long-period grating. A secant hyperbolic like pulse of 23 ps time width with a chirp parameter of -30 was successfully fractionally differentiated to the 0.5th order. The proposal was corroborated experimentally and numerically. The device may find applications in real time phase recovery. Fil: Poveda Wong, L.. Universidad de Valencia; España Fil: Carrascosa, A.. Universidad de Valencia; Es…
El sistema linfático: el gran olvidado del sistema circulatorio.
2014
En el presente artículo se analizan los modelos mentales y las concepciones alternativas que tienen los estudiantes de distintos niveles educativos sobre el sistema linfático como componente del sistema circulatorio. Se establece una relación con las dificultades que se salvaron a lo largo de la historia en la adquisición de dichos conocimientos. Los resultados muestran una deficiente relación entre los sistemas linfáticos y sanguíneos, una falta de conocimientos tanto anatómicos como fisiológicos del sistema linfático y una dificultad para ampliar el modelo explicativo del transporte de nutrientes en los organismos animales, exclusivamente centrado en el sistema sanguíneo. Se termina ofrec…
The Differential Relations between Perceived Social Support and Rumination-Associated Goals
2013
In this study with N = 93 student participants, we employed a daily process approach to investigate sadness-associated rumination in daily life. Specifically, we examined whether the attainment of coping-related goals that people intend to achieve with their sadness-associated rumination were associated with changes in perceived social support. Moreover, we investigated the relations between sadness-related cognitive appraisals, goal pursuit and attainment, and ruminative process variables. Perceived social support was positively related to the attainment of resolution-focused goals, but not to understanding-focused goals, suggesting that social support is particularly associated with a fun…
Querytogether : Enabling entity-centric exploration in multi-device collaborative search
2018
Collaborative and co-located information access is becoming increasingly common. However, fairly little attention has been devoted to the design of ubiquitous computing approaches for spontaneous exploration of large information spaces enabling co-located collaboration. We investigate whether an entity-based user interface provides a solution to support co-located search on heterogeneous devices. We present the design and implementation of QueryTogether, a multi-device collaborative search tool through which entities such as people, documents, and keywords can be used to compose queries that can be shared to a public screen or specific users with easy touch enabled interaction. We conducted…
MADE – A Groupware Application to Support Real-Time Activities of Distributed and Cooperating Communities
2003
Abstract. Distributed work has increased during the last few years. Employees travelling around in different countries still need access to information and must be reachable by their colleagues. A variety of mobile devices have been utilised for this purpose. However, often, when using multiple devices, the information is available to the appropriate device only. Transferring data between the devices is not always an intuitive or easy thing to do – not while conversing at least. This paper presents a groupware application to support real-time actions of distributed communities. The problem of separate devices is addressed by combining multiple tools, media, into a platform independent aggre…
Languages with mismatches
2007
AbstractIn this paper we study some combinatorial properties of a class of languages that represent sets of words occurring in a text S up to some errors. More precisely, we consider sets of words that occur in a text S with k mismatches in any window of size r. The study of this class of languages mainly focuses both on a parameter, called repetition index, and on the set of the minimal forbidden words of the language of factors of S with errors. The repetition index of a string S is defined as the smallest integer such that all strings of this length occur at most in a unique position of the text S up to errors. We prove that there is a strong relation between the repetition index of S an…
Co-learnability and FIN-identifiability of enumerable classes of total recursive functions
1994
Co-learnability is an inference process where instead of producing the final result, the strategy produces all the natural numbers but one, and the omitted number is an encoding of the correct result. It has been proved in [1] that co-learnability of Goedel numbers is equivalent to EX-identifiability. We consider co-learnability of indices in recursively enumerable (r.e.) numberings. The power of co-learnability depends on the numberings used. Every r.e. class of total recursive functions is co-learnable in some r.e. numbering. FIN-identifiable classes are co-learnable in all r.e. numberings, and classes containing a function being accumulation point are not co-learnable in some r.e. number…
Compensation of the impact of low-cost manufacturing techniques in the design of E-plane multiport waveguide junctions
2016
In this work, a full-wave tool for the accurate analysis and design of compensated E-plane multiport junctions is proposed. The implemented tool is capable of evaluating the undesired effects related to the use of low-cost manufacturing techniques, which are mostly due to the introduction of rounded corners in the cross section of the rectangular waveguides of the device. The obtained results show that, although stringent mechanical effects are imposed, it is possible to compensate for the impact of the cited low-cost manufacturing techniques by redesigning the matching elements considered in the original device. Several new designs concerning a great variety of E-plane components (such as …