Search results for "model [neutrino]"
showing 10 items of 1203 documents
A relational model for unstructured documents
1987
The logical structure of a document is usually a tree in which the order of the nodes is important at least at some level of the tree. We call a document unstructured if its structure is a single-level ordered tree. The purpose of this paper is to present a many-sorted algebra for handling unstructured documents. The documents in the model are represented by relations. An algebra for handling documents of one type can be extended to an algebra for handling documents of several types. Further, an algebra for handling documents can be extended by the relational algebra for handling documents and relations in a common algebra. The model of this paper can be regarded as a part of a general docu…
Product-Service Systems in the Digital Era: Deconstructing Servitisation Business Model Typologies
2021
The identification of business model typologies of servitised firms is part of a long research tradition. However, the relevance of many existing typologies in the contemporary context, in which digitalisation is central to business model innovation, may be questioned. Thus, in this chapter, we revisit the existing literature and continue the conceptual discussion about the categorisation of product-service system business models. We propose a conceptual product-service system business model framework with three independent continuums: the degrees of ownership retention, results-orientedness and smartness. Based on this framework, we derive a new product-service system business model typolo…
Tipología de los errores en el cálculo mental : un estudio en el contexto educativo
1995
Resumen basado en el de la publicación Resumen en inglés Se aborda una tipología de errores y dificultades de los estudiantes españoles de un Colegio de Formación de Profesores cuando aplican métodos históricos de cálculo mental (métodos tomados de la tradición escrita que se encuentra en la aritmética) de los libros de texto para resolver problemas con números naturales y con números decimales. ESP
Eclecticismo, Écart y alteridad: Symphony V American, de Leonardo Balada, como paradigma compositivo
2021
Eclecticism is a complex creative trend born as a consequence of both postmodernism and the heterodox treatment of cultural identity borders. This aesthetic path emerges as a compositional model of great communicative power in contemporary creation in the last two decades. Our essay addresses the Symphony V "American" (2003) by Leonardo Balada (1933) as a compositional paradigm. Through this article we demonstrate the importance of including popular sounds and re-signifying materials in the creative conception. A valid model of communication ahead of the challenges of globalization and mass media processes is therefore established hereby.
Automatic Reengineering in MDA Using Rewriting Logic as Transformation Engine
2005
Legacy systems are information systems that have been developed by means of methods, tools and database management systems that have become obsolete, but they are still being used due to their reliability. As time goes on, the maintenance of this software becomes more complex, expensive and painful. The MOMENT framework supports automatic formal model transformations in MDA. This model transformation approach is based on the algebraic specification of models and benefits from mature term rewriting system technology to perform model transformation using rewriting logic. In this paper, we present how we apply this formal transformation mechanism to recover a legacy relational database, obtain…
The Orchestra of Multiple Model Repositories
2013
This paper motivates and encourages the simultaneous use of multiple model repositories in model-driven software. A multi-repository mechanism is proposed for that. With this mechanism, multiple model repositories residing in the same or different technical spaces can be mounted into a single repository (in the same sense as file systems are mounted in UNIX) and accessed in a uniform way. Relations (including generalizations) between elements from the mounted repositories are supported. Some of the repositories may be “computable” (virtual), which leads to the on-the-fly model transformation concept.
FMU-proxy : A Framework for Distributed Access to Functional Mock-up Units
2019
The main goal of the Functional Mock-up Interface (FMI) standard is to allow simulation models to be shared across tools. To accomplish this, FMI relies on a combination of XML-files and compiled C-code packaged in a zip archive. This archive is called an Functional Mock-up Unit (FMU) and uses the extension .fmu. In theory, an FMU can support multiple platforms, however this is not always the case and depends on the type of binaries the exporting tool was able to provide. Furthermore, a library providing FMI support may not be available in a particular language, and/or it may not support the whole standard. Another issue is related to the protection of Intellectual Property (IP). While an F…
Sociālā uzņēmējdarbība: Starptautiskās pieredzes ieviešana
2021
Latvijā pastāv ienākumu nevienlīdzības problēma. Sociālās uzņēmējdarbības attīstība ir viens no soļiem šī jautājuma novēršanai. Tomēr nozare joprojām nav pietiekami attīstīta, un ir vajadzīga nobriedusi sociālās uzņēmējdarbības ekosistēma, lai radītu vairāk darbavietu un līdz minimumam samazinātu cilvēku grupas, kurām draud sociālā atstumtība. Šī darba mērķis ir izveidot labi funkcionējošas sociālās uzņēmējdarbības ekosistēmas teorētisko modeli Latvijā, balstoties uz Eiropas valstu pieredzi un vietējo sociālo uzņēmumu pētījumiem. Tiek analizēta Eiropas sociālās uzņēmējdarbības ekosistēmu prakse, ko var ieviest Latvijā, kā arī izaicinājumi, ar kuriem šodien saskaras sociālie uzņēmumi. Autore…
The Fuzzy Logic Gambit as a Paradigm of Lotfi’s Proposals
2019
Lotfi Zadeh, in discussing the future directions the discipline should have taken, has insisted in highlighting what he called `the Fuzzy Logic Gambit' , whose basic idea is that, when dealing with the solution of a problem through the use of Fuzzy Logic, two different type of precisions exist: ``precision in value'', which is connected to the ability of measuring reality, and ``precision in meaning'', which is what we want to attain when dealing with the real world. While the final goal of Fuzzy Logic is to provide some degree of precision to what is less precise in nature, he has brilliantly suggested that this can be obtained by bartering between precision in value and precision in meani…
Effects of COVID-19 on Business Models in Romania and the Netherlands, A Digitalization Perspective
2020
Abstract The research objective is to study how Romanian and Dutch organizations’ business models have changed under COVID-19 conditions. The role of digitalization in adapting business models and business practices is studied. The theoretical background reviews literature about business models and their dimensions. Literature review investigated digitalization in Romanian and Dutch organizations. Research questions were: To what extent do Romanian and Dutch organizations use: • more digital methods in their offer to their clients now than before the crisis? • more digital methods in their business processes now than before the crisis? • more digital methods in communicating with their clie…