Sebastian Marius Rosu

Internet/Intranet/Extranet-Based Systems in the CESICED Platform for Virtual Product Development Environment

Development teams involved in the product development are often geographically and temporally distributed. There is a high level of outsourcing in the actual product development efforts. In order to achieve a market objective that otherwise could be out of reach, enterprises, which do not have the complete knowledge for developing all the components needed for their products, need to outsource the development of specific parts; in this way a cooperation with other enterprises working in the same industrial sector starts. It is then possible to say that enterprises give rise to a special type of virtual enterprise(VE), in which each company maintains the greatest flexibility and business independence. This paper presents a vision of next generation engineering working environments and describes a core information technology which future systems can be built on. This paper gives an overview of the new Web Services technology based of the IBM Rational Software solutions, discusses the critical issues of the virtual product development, presents the roles of the virtual teams, and build a general architecture of a CESICED experimental platform for training, research and consulting in the new digital economy, located in the PREMINV center at the University Politehnica of Bucharest.

Professional Risk Assessment Using Virtual Enterprise Network Support for Knowledge Bases Development

The paper presents some recent researches results based on the concept of collaborative infrastructure, in order to unify existing standards for supply chain management and to provide the support in various decision making process in manufacturing supply networks. Intended to facilitate and enhance the required knowledge management processes the proposed collaborative infrastructure, based on a virtual enterprise network, is expected to promote the development of the business services sector using a new product lifecycle paradigm according with the greater need for software tools for risk estimation. We focus on the professional risk assessment (PRA) as part of risk management process (RMP) and how the risk level can be established in collaborative infrastructures depending on probability and severity of consequences. A case study is presented to show PRA at the SMEs level.

Virtual enterprise network general architecture

In order to achieve a market objective that otherwise could be out of reach, enterprises, which do not have the complete knowledge for developing all the components needed for their products, need to outsource the development of specific parts; in this way a cooperation with other enterprises working in the same industrial sector starts. It is then possible to say that enterprises give rise to a special type of virtual enterprise (VE), in which each company maintains the greatest flexibility and business independence. The concepts of a VE enabled by a new generation of internet/intranet/extranet-based services are discussed in this article. This work analyzes the network architecture for a large enterprise, geographically dispersed (seen as VE) as support for virtual project development.

A Knowledge Management Framework as Knowledge Bases Development Support to Professional Risk Assessment in SMEs

The market situation of the European countries is the following: 99% of companies in the EU are small and medium sized enterprises (SMEs) – companies with a maximum of 250 employees and a maximal turnover of € 50 million. In the European Union (Europe have 23 million SMEs and 41 000 large companies) SMEs employ more than 65% of all employees. During past years, SMEs have created 80 % of the new jobs in the EU (IP/08/1003, Brussels, 25th June 2008). SMEs meet the multiple economic, technical and social functions, such as:  Generate the greater part of GDP in each country, usually between 55% 95%;  Provide jobs for majority of employment;  Produce a large percentage of the applicable technical innovations in the economy;  Have the highest market dynamism in the economy, a situation evidenced by the evolution of their number, the volume of turnover and size of employment, higher sensitivity to large companies;  Produce products and services at lower costs than large companies, the main factor causing this difference are lower costs;  Show high flexibility and adaptability to market requirements and changes favored by smaller size, faster decision-making process, specifically the entrepreneur and his direct involvement in ongoing activities;  Are the seeds for future large firms, particularly in new areas of the economy, etc. The SMEs research development activities, products development, new technologies implementation (see figure 1) presupposes knowledge and assumption of multiple risks. As a result of a new product development paradigm, there is a greater need for software tools to risk estimation. The risk evaluation sustains SMEs in the uncertainties elimination in the development strategy and management policies (see figure 2). Estimation, evaluation and control of the occupational risk represent prerequisites for grounding and for a continual support of the decision that has been previously taken on occupational safety in a working system (Vasilescu et al., 2008; Tint et al., 2009). However, in the last time, a lot of research in the field of knowledge management is dedicated to large companies or international concerns and the small and medium-sized

Virtual Enterprise Network based on IPSec VPN Solutions and Management

Informational society construction can’t be realized without research and investment projects in Information and Communication Technologies (ICT). In the 21st century, all enterprises have a local area network, a virtual private network, an Intranet and Internet, servers and workstations for operations, administration and management working together for the same objective: profits. Internet Protocol Security is a framework of open standards for ensuring private communications over public networks. It has become the most common network layer security control, typically used to create a virtual private network. Network management represents the activities, methods, procedures, and tools (software and hardware) that pertain to the operation, administration, maintenance, and provisioning of networked systems. Therefore, this work analyses the network architecture for an enterprise (industrial holding) geographically dispersed. In addition, the paper presents a network management solution for a large enterprise us

Feedforward multilayer phase-based neural networks

Complex-Valued Neural Networks (CVNNs) are Artificial Neural Networks (ANNs) which function using complex numbers - they have complex-valued parameters and accept complex-valued inputs. Phase-Based Neurons (PBNs) are simple CVNNs that use for the internal weights complex numbers with the modulus 1, the only adaptable parameters being the phases of the weights. We present in this paper some limitations of the Continuous Phase-Based Neuron (CPBN) and describe the structure of a Feedforward Multilayer Phase-Based Neural Network (MLPBN) and its training using an adaptation of the backpropagation algorithm.

Knowledge Applications Development for SMEs Business Management System Improvement

This paper presents some research results based on the concept of collaborative infrastructure (as virtual enterprise business network), in order to unify existing standards for supply chain management and to provide support in various decision making manufacturing supply networks processes. It intends to facilitate and enhance the required knowledge management processes linked with the business process management. The virtual enterprise business network expected to improve small and medium-sized enterprises (SMEs) involvement in new product manufacturing networking efforts, enables better and faster decision processes and promotes the development of the business services. As the new product development paradigm requires evaluated software tools, a knowledge base method built and used for the human resources (HR) selection as part of the business management process is proposed.