The paper is concerned with the problem of the `̀ prioritization’ ’ of technical design characteristic s of a product. An interactive algorithm has been developed with the aim to better support the engineering design process by means of quality function deployment (QFD). The algorithm tries to soften customer approach to QFD in those situations in which customers are not able to give a `̀ signifi...

Comprehensive quality control information system is effectively used to plan, perform, track and evaluate quality control related laboratory activities and some other chemistry duties. This system allows to the performing of the following functions:-Recording of non-standardized samples.-Recording of analytical procedures.-Recording of calibration results.-Calculation of analytical errors.-Auto...

Industry and high-tech industries flourish in the current era. In addition to enhancing quality of life, they have caused plentiful harm to human beings and the environment. Some man-made pollution has destroyed the ecological balance. Environmental protection has thus become everybody’s social responsibility. Many enterprises are beginning to actively concern themselves with sustainable busine...

In this article we present a strong support to real recursive function theory as a branch of computability theory rooted in mathematical analysis. This new paradigm connects computation on reals with differential equations and infinite limits in a robust and smooth way. The results presented here are taken mainly from the article (4) of the same authors. Key–Words: Computation on Reals, Differe...

A classical problem in database theory is to verify whether there exists a relation (or database) instance satisfying a number of given dependency constraints but the issue of handling constraints on aggregate data has not been much investigated so far. This paper introduces a new type of data dependency, called count constraint, that requires the results of given count operations on a relation...

Multidimensional (MD) modeling is the foundation of data warehouses, MD databases, and OLAP applications. In the last years, there have been some proposals to represent MD properties at the conceptual level. In this paper, we present how to manage the representation, manipulation, and presentation of MD models on the web by means of eXtensible Stylesheet Language Transformations (XSLT). First, ...

Abstract. Aggregate R-B-tree (aRB-tree) provides a framework for supporting OLAP operations over spatio-temporal data. Although existing aRB-tree implementations process sptio-temporal aggregate queries pretty efficiently, it is hardly applicable for online processing due to the excessive accesses to the aggregate B-trees of the entries in the R-tree and the overlap in the R-tree. This paper ad...

Data warehouses, multidimensional databases, and OLAP tools are based on the multidimensional (MD) modeling. Lately, several approaches have been proposed to easily capture main MD properties at the conceptual level. These conceptual MD models, together with a precise management of metadata, are the core of any related tool implementation. However, the broad diversity of MD models and managemen...

Saffron is the most expensive spice and is significantly valuable in non-oil export. Drying process of saffron is considered as a critical control point with major effects on quality and safety parameters. A suitable drying method covering standards and market requirements while it is costlty benefitial and saves energy is desirable. Solar drying could be introduced as an appropriate procedure ...

A hybrid asymptotic-numerical method is formulated and implemented to accurately calculate the mean first passage time (MFPT) for the expected time needed for a predator to locate small patches of prey in a 2-D landscape. In our analysis, the movement of the predator can have both a random and a directed component, where the diffusivity of the predator is isotropic but possibly spatially hetero...