This article reviews the object-oriented features of the Ox matrix programming language. We discuss object-oriented programming in general and give econometric examples coded in Ox. We also discuss some useful built-in classes that come with the Ox distribution.

In this paper we present Zend Architecture, which is an open source technology for developing web applications and services, based on object-oriented components, and the Model-View-Controller architectural pattern, also known as MVC, which is the fundament of this architecture. The MVC...

This paper describes MOLES 1.0, an integrated land-use and transport model developed with Object-Oriented Programming principles in order to combine selected characteristics from Spatial Computable General Equilibrium and microsimulation models.

Bei der Bearbeitung von ad-hoc Tätigkeiten am kollaborativen Arbeitsplatz ist häufig der Zugriff auf eine größere Anzahl von Dokumenten notwendig, die verteilt über verschiedene Repositories vorliegen. Bei der Aktivitäts-zentrischen Organisation und Strukturierung dieser Dokumente wird der...

Python is a powerful high level open source programming language, that is available for multiple platforms. It supports object oriented programming, and has recently become a serious alternative to low level compiled languages such as C. It is easy to learn and use, and is recognized for very...

A toric arrangement is a finite set of hypersurfaces in a complex torus, every hypersurface being the kernel of a character. In the present paper we build a CW-complex S homotopy equivalent to the arrangement complement Rx, with a combinatorial description similar to that of the well-known...

The project was created with the intention of helping the managers, whose objective is to optimize the use of resources so that they obtain the wanted profit. In the first paragraphs we presented the theoretical concepts that we had in order to make this application. We pointed out the necessity...

In this paper we investigate the role of the Remote Façade pattern in the optimization of dis-tributed systems. The intent of this pattern is to wrap fine-grained remote objects in a coarse-grained interface and thus greatly reduce the total number of calls executed over the network. The...

The Web Ontology Language (OWL) is the most expressive standard language for modeling ontologies on the Semantic Web. In this paper, we present a temporal extension of the very expressive fragment SHIN(D) of the OWL-DL language resulting in the tOWL language. Through a layered approach we...

We present an object-oriented software framework allowing to specify, solve, and estimate nonlinear dynamic general equilibrium (DSGE) models. The implemented solution methods for finding the unknown policy function are the standard linearization around the deterministic steady state, and a...

In the paper the original concept of a new cipher, targeted at this moment forcivil applications in technology (e.g. measurement and control systems) and business (e.g.content protecting, knowledge-based companies or long-term archiving systems) is presented.The idea of the cipher is based on...

In der Dissertation wird ein Spezifikationsrahmen dargestellt, mit dem sich die Au?ensicht von (Software-) Komponenten in einer normierten und vollst?ndigen Weise beschreiben l?sst. Dazu werden verschiedene methodische Vorgaben geschaffen, mit denen sich die f?r die betriebliche...

This paper presents the software framework JStatCom which is geared towards the development of rich GUI clients for numerical procedures. The concept is to solve all recurring tasks with the help of reusable Java components. Optionally, one can delegate the execution of special numerical...

This paper presents the software framework JStatCom which is geared towards the development of rich GUI clients for numerical procedures. The concept is to solve all recurring tasks with the help of reusable Java components. Optionally, one can delegate the execution of special numerical...

Agent-based computational economics (ACE) is the computational study of economies modeled as evolving systems of autonomous interacting agents. Starting from initial conditions, specified by the modeler, the computational economy evolves over time as its constituent agents repeatedly interact...

A Kalman filter, suitable for application to a stationary or a non-stationary time series, is proposed. It works on time series with missing values. It can be used on seasonal time series where the associated state space model may not satisfy the traditional observability condition. A new...

Angesichts der wachsenden Bedeutung von Informationen als strategischer Erfolgsfaktor hat die strategische Informationssystemplanung neben der Unterstützung der Unternehmungsstrategie auch die Aufgabe, der Unternehmung neue Wettbewerbspotentiale zu erschließen. Die Einrichtung einer geeigneten...

Statistical computing when input/output is driven by a Graphical User Interface is considered. A proposal is made for automatic control of computational flow to ensure that only strictly required computations are actually carried on. The computational flow is modeled by a directed graph for...

The basic ideals underlying the Kalman filter are outlined in this paper without direct recourse to the complex formulae normally associated with this method. The novel feature of the paper is its reliance on a new algebraic system based on the first two moments of the multivariate normal...