Merging Application Models in a MDA Based Runtime Environment for Enterprise Information Systems

The issue of merging source code based applications is very problematic, particularly when involving code from disparate sources, due to the typical unsuitability of available source code for software merging. The relatively recent field of model driven architecture is primely involved in the definition and development of the source model structures for model based applications and in developing transformations from the abstract models to various executable formats. The authors are also involved in these MDA activities in the development of their G2 prototype system targeted at the specific domain of enterprise information system style applications. They have reviewed various methods for merging application models within this domain and describe the fundamentals of three application model integration methods from their G2 system; standard element referencing, virtual data element mapping and element envelopment that can be used to provide practical and simple application model merging at both the design time and runtime of a model based production system, to produce a working integrated merged application

On quantum symmetries of ADE graphs

The double triangle algebra(DTA) associated to an ADE graph is considered. A description of its bialgebra structure based on a reconstruction approach is given. This approach takes as initial data the representation theory of the DTA as given by Ocneanu's cell calculus. It is also proved that the resulting DTA has the structure of a weak *-Hopf algebra. As an illustrative example, the case of the graph A3 is described in detail.Comment: 15 page

A meta level to LAG for adaptation language re-use

Recently, a growing body of research targets authoring of content and adaptation strategies for adaptive systems. The driving force behind it is semantics-based reuse: the same adaptation strategy can be used for various domains, and vice versa. E.g., a Java course can be taught via a strategy differentiating between beginner and advanced users, or between visual versus verbal users. Whilst using an Adaptation Language (LAG) to express reusable adaptation strategies, we noticed, however, that: a) the created strategies have common patterns that, themselves, could be reused; b) templates based on these patterns could reduce the designers' work; c) there is a strong preference towards XML-based processing and interfacing. This has lead us to define a new meta-language for the LAG Adaptation Language, facilitating the extraction of common design patterns. This paper provides more insight into the LAG language, as well as describes this meta-language, and shows how introducing it can overcome some redundancy issues

Power Systems Monitoring and Control using Telecom Network Management Standards

Historically, different solutions have been developed for power systems control and telecommunications network management environments. The former was characterized by proprietary solutions, while the latter has been involved for years in a strong standardization process guided by criteria of openness. Today, power systems control standardization is in progress, but it is at an early stage compared to the telecommunications management area, especially in terms of information modeling. Today, control equipment tends to exhibit more computational power, and communication lines have increased their performance. These trends hint at some conceptual convergence between power systems and telecommunications networks from a management perspective. This convergence leads us to suggest the application of well-established telecommunications management standards for power systems control. This paper shows that this is a real medium-to-long term possibility

Fundamentals of crude oil and natural gas processing

This training manual includes term project methodical guide on the course "Fundamentals of crude oil and natural gas processing" in English. The main purpose of the training manual is to provide students the theoretical and methodological assistance at performance the term project on the course "Fundamentals of crude oil and natural gas processing". The manual contains the initial data and reference material needed to perform the calculations. The manual is intended for the students of speciality 6.050304 "Oil and gas production" in English

International financial contagion: what do we know?

This paper attempts a synthesis of theoretical and empirical work on international financial contagion. Although a professional consensus on the appropriate definitions of contagion has yet to emerge, we document substantial research progress towards this goal. On the empirical front, determining when returns are ‘excessive’ is a pre-condition for designing effective policy response to crises. At the theoretical level, tracing the observed herding behavior to market participants’ uncertain beliefs and information asymmetries is a key element for understanding how contagious effects arise. It is argued that the recent focus on better understanding of high-frequency financial returns data and decision making at the market microstructure level are promising avenues for understanding the transmission of shocks across markets and countries

Fundamentals of crude oil and natural gas processing

This training manual includes term project methodical guide on the course "Fundamentals of crude oil and natural gas processing" in English. The main purpose of the training manual is to provide students the theoretical and methodological assistance at performance the term project on the course "Fundamentals of crude oil and natural gas processing". The manual contains the initial data and reference material needed to perform the calculations. The manual is intended for the students of speciality 6.050304 "Oil and gas production" in English