Search results for " virtual"
showing 10 items of 493 documents
Executable Data Quality Models
2017
The paper discusses an external solution for data quality management in information systems. In contradiction to traditional data quality assurance methods, the proposed approach provides the usage of a domain specific language (DSL) for description data quality models. Data quality models consists of graphical diagrams, which elements contain requirements for data object's values and procedures for data object's analysis. The DSL interpreter makes the data quality model executable therefore ensuring measurement and improving of data quality. The described approach can be applied: (1) to check the completeness, accuracy and consistency of accumulated data; (2) to support data migration in c…
FMI4j: A Software Package for working with Functional Mock-up Units on the Java Virtual Machine
2018
This paper introduces FMI4j, a software package for working with Functional Mock-up Units (FMUs) on the Java Virtual Machine (JVM). FMI4j is written in Kotlin, which is 100% interoperable with Java, and consists of programming APIs for parsing the meta-data associated with an FMU, as well as running them. FMI4j is compatible with FMI version 2.0 for Model Exchange (ME) and Co-Simulation (CS). Currently, FMI4j is the only software library targeting the JVM supporting ME 2.0. In addition to provide bare-bones access to such FMUs, it provides the means for solving them using a range of bundled fixedand variable-step solvers. A command line tool named FMU2Jar is also provided, which is capable …
Critical analysis of conventional thermoeconomic approaches to the diagnosis of multiple faults in air conditioning units: Capabilities, drawbacks an…
2013
Abstract Faults diagnosis in air conditioning systems is a crucial activity, since malfunctions may induce heavy degradation of performance. Among the available techniques, thermoeconomic diagnosis has played a marginal role due to the difficulties encountered when applying the methodology to refrigeration plants. In this paper a critical analysis on capabilities and limits of thermoeconomic diagnosis is proposed. The reference plant is a 120 kWc air-cooled air conditioning system; a simulator is used to evaluate thermodynamic data under normal and faulty conditions, setting up “virtual experiments” to simulate each fault. Five malfunctions are imposed, either individually or simultaneously…
Nuovi paradigmi del design. Visualizzazione interattiva e configuratori di prodotto.
2015
Disegno e progetto sono legati l’un l’altro e costituiscono un sistema di pensiero in cui, da sempre, è impossibile considerarli semparatamente. Pochi ma significativi esempi: codifica dell’assonometria e produzione industriale; curve di Bezier e forme di automobili; stampanti 3D e microproduzione. Anche oggi il connubio tra sistemi di visualizzazione e web sta cambiando il modo di vedere il prodotto e i processi di progettazione. Gli esiti di questo processo sono, tra gli altri, i configuratori di prodotto, software capaci di far prevedere un oggetto e le sue declinazioni. L’introduzione dei configuratori pone interrogativi di rilievo sul delicato rapporto tra rappresentazione, design e ma…
L'evolució del conflicte de tasca, el conflicte de relació i el conflicte de procés en equips virtuals: el paper de l'entrenament
2010
L'objectiu d'aquest treball és estudiar els efectes de l'entrenament autoguiat en la percepció dels equips del conflicte de tasca, del conflicte de relació i del conflicte de procés, al llarg de tres sessions i en un context virtual. Per això es va fer un estudi de laboratori en el qual cinquanta-dos equips de comunicació sincrònica a través d'ordinador van treballar durant tres sessions: vint-i-set d'ells foren assignats a la condició experimental, en la qual van rebre un entrenament autoguiat, i la resta d'equips van ser assignats a la condició de control. Els resultats d'ANCOVA (anàlisi de covariància) de mesures repetides mostren que l'entrenament, junt amb l'experiència adquirida pels …
Power System Oscillations with Different Prevalence of Grid-Following and Grid-Forming Converters
2022
The oscillatory behaviour of the power system is an aspect that is significantly affected by the increasing integration of converter-based generation sources. Several works address the impact of non-synchronous generation on the operation of the system from different points of view, but only a few studies focus on power-frequency oscillations with a prevalence of generation sources interfaced through power electronics. A lack of research can be found in particular in the comparative analysis of the two main control strategies for power converters, namely grid-following and grid-forming. The article aims to contribute to this direction, starting from a theoretical analysis of the two control…
The case of literacy motivation : Playful 3D immersive learning environments and problem-focused education for blended digital storytelling
2018
The University of Patras' Library Services designed and offered to primary and secondary schools the pilot educational program “From the Ancient to the Modern Tablets”, featuring immersive multimedia learning experiences about the book history. The pilot program consisted of three stages: a playful library tour, followed by an interactive game-based digital storytelling activity with game elements, and a collaborative creative reflective hands-on activity. Utilizing the avatar psychology power, the visualization and simulation affordances of 3D immersive learning environments and the appeal of storytelling and game-based learning, the “gamified” blended narrative on the book evolution enabl…
Arte digitalizado y arte digital: las manifestaciones artísticas en la era digital
2003
Analizamos las potencialidades que el medio digital ofrece al campo de la creación, constatando la aparición de nuevas obras más interactivas, abiertas y dinámicas y de un nuevo tipo de espectador más activo. Destacamos las repercusiones que este medio está ejerciendo en el mundo de los museos y las galerías que están apostando, en algunos casos, por incorporar estas obras a sus espacios expositivos y al mercado del arte. Reseñamos la importancia de Internet y el surgimiento del net-art, así como de la Realidad Virtual y el Arte evolutivo. (A)
Cuénteme un cuento / 2
2008
The Mathematical Table of the Palazzina Cinese in Palermo. Animation and Virtual Reality Techniques for an Edutainment Project
2023
The Palazzina Cinese of Palermo was built on a project by Venanzio Marvuglia in 1799 on behalf of Ferdinand IV of Borbone, when the royal family, fleeing from Naples following the establishment of the Parthenopean Republic, moved to Sicily. The building, known as “Chinese” due to its style, is full of particular architectural and decorative solutions. An element of particular interest is theMathematical Table, designed to avoid any contact between the living room and the kitchen below, isolating it from smells and servants. Thanks to a complex system of winches and pulleys, in fact, the dishes could be served by letting the central portion of the table and small circular areas fall into the…