Assembly sequence planning (ASP) aims to find an optimal sequence to assemble a product. We propose here to use the ordering genetic algorithms (OGA) to solve this problem. The approach is based on three main ideas. Firstly, the identification of the subassemblies in the sequence is done by keeping trace of the components membership to a set of parts all along the sequence. Secondly, precedence...

Problems with water infrastructure are characterized by strong pressures of various stakeholders, besides to have heavy environmental and financial restrictions. This paper presents a group decisionmaking model for improvement of water infrastructure specially regarding with the reduction of water losses, by the integration of soft and hard approaches of Operational Research. Firstly, the soft ...

This paper presents a new approach based on Multi-Criteria Decision Analysis (MCDA), named PROMETHEE-SAPEVO-M1, through its implementation and feasibility related to the decision-making process regarding evaluation of helicopters attack Brazilian Navy. The proposed methodology aims present an integration ordinal into cardinal procedure from PROMETHEE method, enabling perform qualitative quantit...

The evaluation of quality of the railway passenger service is an important way to know the quality of the railway passenger service. This paper firstly constructs an evaluation indicator system of the quality of the railway passenger service on the foundation of the related literatures, and constructs the multiple-attribute evaluation matrix and indicator weight vector based on the linguistic v...

The permeation of new technologies combined with the high cost for running a shop force enterprises to search for new sales methods. Network applications and ICT (Information and Communication Technology) can help achieve e-commerce goals. In Greece, many enterprises in the agro-food and drink sector already have an internet presence. This paper studies the adoption of e-commerce in websites th...

Striving in volatile and competitive business environment, companies have to reveal the ideal path to survive and provide sustainable success, which can be validated using objective and subjective criteria. In order to fulfil stakeholders’ demands, many companies use different types of non financial indicators, characterising them as subjective ones. Authors lately argue about the usage of subj...

The results of the ship ballast water treatment systems neutralization need to be verified in a transparent and trustful way before the ship enters a port. Some researches and results, explained in this article, confirm a need for a good verification. If there is no good methodology agreed, then it would not be accepted the solution that the BWMC (Ballast Water Management Convention) 2004 did p...

In recent years, the e-government revolution has induced transformational economic and social shifts around the world. The main objective of this paper is to analyze and rank the e-government agricultural services provided by the Greek government in Citizens Services Center web portal. For this reason an analysis of all the official e-government agricultural and environmental services was made....