An algorithm that combines tabu search principles with a simple improvementswapping heuristic has been developed for allocating stands and cutting patterns to logging crews for a single time period. A limited set of market and operational constraints has been included. Individual crew productivity has also been taken into account. The algorithm has been implemented in Visual Basic. Tests have b...

Lately, as sustainability has been globally a key goal at local and regional level, environmental governance and management issues, related to decisions that verify performance have also gained a continuously growing focus. DSSs designed for this purpose can use multi criteria analysis and indicators to implement sustainable forest management. This DSS application includes 6 variables for the f...

This report describes BINOMFIT, a program for estimating components in a mixed distribution of fission-track (FT) grain ages. BINOMFIT has been around for some 10 years, but we have just finished building a Windows version that is much easier to use and provides extensive options for displaying and recording results. The program and source code (Visual Basic 6) are available, along with other F...

This paper presents a case study commissioned by the Spanish railway carrier Ferrocariles Españoles de Vı́a Estrecha for the annual rostering of work schedules for station personnel. A mixed rostering process is used. The first part of the process is carried out manually with the aid of a spreadsheet and Visual Basic, and consists of designing an initial graphic with 4-week patterns for each sta...

This is a short report on a short project, carried out during a 3-month sabbatical stay at Microsoft Research in the fall of 1998. The motivation for this endeavor was doublefold: (a) verify the degree of language independence of the COM component technology and (b) explore COM as a potential commercial environment and framework for Oberon applications. The project finally converged towards a s...

SUMMARY – An ActiveX component to calculate temperature and vapour fraction in a geothermal reservoir using the quartz solubility geothermometry was written in Visual Basic. The approach is based on the conservation of mass and energy (enthalpy). Four representative types of regression equations for quartz solubility: (i) a quadratic regression equation of 1/T and pressure P, (ii) a linear equa...

A descriptive approach for automatic generation of visual blends is presented. The implemented system, the Blender, is composed of two components: the Mapper and the Visual Blender. The approach uses structured visual representations along with sets of visual relations which describe how the elements – in which the visual representation can be decomposed – relate among each other. Our system is...

With the rapid growth of networks in size and complexity, netwok administrators today are facing more and more challenges for protecting their networked computers and other devices from all kinds of attacks. Unlike the traditional methods of analyzing textual log data, a visual interactive system called DDoSViewer is proposed in this paper for detecting DDoS kind of network attacks. DDoSViewer ...

In this paper we present a formal framework for modelling a trajectory data warehouse (TDW), namely a data warehouse aimed at storing aggregate information on trajectories of moving objects, which also offers visual OLAP operations for data analysis. The data warehouse model includes both temporal and spatial dimensions, and it is flexible and general enough to deal with objects that are either...

This paper presents a system that controls the behavior of a mobile robot. The system is based on situation calculus, the initial state is described and a goal is given, Prolog produces an answer to this goal and we use an interface in Visual Basic to interpret the answer given by it. After of interpreting the given actions in response we send commands to the mobile robot through a serial port ...