A trading partner agreement can be used to regulate the cooperation of organizations. It is typically written in natural language which gives rise to misunderstandings when partners interpret it differently. In addition it is often compiled in an unsystematic way so that we might easily overlook a situation the contract should have covered. It is therefore desirable to have a method that can su...

let r be an associative ring with identity, c(r) be the category of com-plexes of r-modules and flat(c(r)) be the class of all at complexes of r-modules. we show that the at cotorsion theory (flat(c(r)); flat(c(r))−)have enough injectives in c(r). as an application, we prove that for each atcomplex f and each complex y of r-modules, exti (f,x)= 0, whenever ris n-perfect and i > n.

The current state-of-the-art in electronic negotiations shows a focus on the trade of standardised mostly inexpensive products in fixed networks of suppliers and customers. To overcome these shortcomings, the goal must be to enable the trade of complex and valuable goods and to support many-to-many marketplace for that purpose. Once valuable goods are concerned, the trade process involves negot...

Modeling how we choose among alternatives, or more generally, modeling preferences, is one of the core topics of study in Psychology. Preferences can be studied experimentally using a variety of procedures, one of the oldest being the method of paired comparisons. This method remains quite popular in areas such as psychophysics and consumer psychology. For a good overview of the method of paire...

The perspective-N-point problem is a well known issue in computer vision. It consists in the determination of the distance between the camera and a set of points well known in an object coordinate space. This problem has been extensively treated in the literature and is still opened. Many solutions already exist. All these approaches consider only common planar camera. We propose, with a new fo...

This paper presents some key concepts and underlying assumptions of three current fields of research: the Theory of Organized Activity, Organizational Semiotics and Language Action Perspective. All these fields are related by a human/social/organizational common view of Information Systems. In our analysis and, within Organizational Semiotics field Ronald Stamper’s theory was chosen, while with...

This paper analyses robotic signals in the perspective of fractional dynamics and the pseudo phase plane (PPP). It is shown that the spectra of several experimental signals can be approximated by trend lines whose slope characterizes their fractional behavior. For the PPP reconstruction of each signal, the time lags are calculated through the fractal dimension. Moreover, to obtain a smooth PPP,...

The practice of health professionals in the hospital environment has been loosing its human characteristics in view of the care delivered to the disease rather than to the sick being, and also in view of the increasing technological complexity, associated with increasing costs. Ethics requires the implementation of a reflective process concerning the principles, values, rights, and duties rulin...

The idea of using the Choquet integral as an aggregation operator in machine learning has gained increasing attention in recent years, and a number of corresponding methods have already been proposed. Complementing these contributions from a more theoretical perspective, this paper addresses the following question: What is the VC dimension of the (discrete) Choquet integral when being used as a...

This paper' presents an analysis of dynamic temporal reasoning with Dutch adverbials of aspectual focus. The crucial property of focus constructions is the inherent opposition between the actual value for a given parameter and the possible alternatives in the speaker's expectation. The dynamic perspective tries to account for the fact that when new information is added, certain components are u...