This study has developed a support system that can retrieve papers by using the paper-relationship diagrams (PRDs) that express the relationships among papers. The system has the following functions: (1) users can see various relationships among papers by visualizing of PRDs and (2) the visualization patterns can be changed dynamically by users’ point of view.

Integration of concurrently acting humans and systems is a great challenge which is characterized by the great diversity of involved actors, activities, and artifacts. Based on the process modeling idea , several integration approaches follow a process-oriented and model-based integration strategy. In this paper, we focus on the application of this model-based integration approach to engineerin...

In this paper, we are dealing with the topic of view maintenance which consists of maintaining materialized views in response to data modifications on the data sources. We propose an incremental method to maintain XML views. This is achieved by defining first how to store XML views, which may be obtained over different data sources, in a relational DBMS. The identifiers used to store the view d...

This article aims to analyze the situation of Romanian companies from an environmental point of view. Environmental issues are addressed very often nowadays, and they reach and affect every domain, including the economical one. Implementing an environmental management system will not only help the companies to comply with laws and regulations, but, above all, will offer them an important compet...

This paper describes how materialized views could be used in distributed Real-Time Database Management System. We provide algorithm for dynamic materialized views building and cost evaluation. The main difference of provided method is that we take into account temporal properties of base relations and data manipulation operations. Experimental part provides algorithm which builds materialized v...

In this paper, we describe an integrated document management system based on the object-oriented database system OMS. The underlying idea is to replace the current vision of a le system with that of a document database system, thereby ooering higher-level user support for the management of all forms of computer-stored information and work activities. The object-oriented database system provides...

This document describes the View-based Access Control Model (VACM) for use in the Simple Network Management Protocol (SNMP) architecture. It defines the Elements of Procedure for controlling access to management information. This document also includes a Management Information Base (MIB) for remotely managing the configuration parameters for the View-based Access Control Model. This document ob...

General theory of systems gives general principles of study and reinstatement (design) of all Types and varieties of systems. From this point of view it is possible to identify common design principles of technical and management systems. For designing, Understanding and mastering product quality planning the APQP (Advanced Product Quality Planning) concept is often employed. This concept belon...

The wide spread of communication infrastructures brings with it a natural increase of transmission signals in several areas, in particular in urban environments. In this article we introduce a data model to represent the sensible area from an electromagnetic point of view. The risk analysis has to take into account a plethora of information related to several territorial aspects in order to hav...

This paper attempts to determine the relationship between quality and productivity in the hospitality sector. Although both variables are crucial to the competitive and value creation processes in hotels, few empirical studies have explicitly analyzed the relationship between them. Thus, we estimated a production function for a hotel sample that shows how a set of determinants influences labour...