Regular integral equations solution direct methods optimisation

The paper is aimed at the finding of the solution error optimum estimations of Uryson equations and Fredholm multidimensional equations and the optimum direct methods construction for their solution. As a result error optimum accordning to order of accuracy estimations for some classes of regular integral equations solution direct methods have been found. Optimum accordning to order of accuracy direct and projection methods for the regular integral equations some classes solution have been constructedAvailable from VNTIC / VNTIC - Scientific & Technical Information Centre of RussiaSIGLERURussian Federatio

The Effect of Lean Practices on Environmental Performance: An Empirical Study

Lean production has emerged in the past decades as one of the most popular topics in business and manufacturing literature, as it is the production paradigm currently applied in many industries. This paradigm is characterized by five principles and the importance of reducing waste (muda). In the same way, the environmental performance of companies in terms of pollution prevention and use of natural resources is another widespread issue for both firms and customers. This focus on \u201cGreen manufacturing\u201d is part of one of the three pillars of Sustainable development. Lean and the so-called Green paradigm are both focused on waste reduction and several authors have studied their relationships (common points and divergences) and the synergic effects of joining these two management approaches. However, the impact of Lean practices on environmental performance is still unclear, as limited empirical research has been conducted in this field. In this chapter, a study is carried out in order to analyze the impact on environmental performance in manufacturing firms that have implemented various Lean practices. The chapter is divided in two parts. First we have conducted a review of the relevant literature in order to give a state-of-the-art general picture. The second part of the chapter has a strong empirical focus. Three case studies regarding firms that have started a Lean transformation program for at least five years are investigated in depth. Moreover, a cross-case analysis is carried out to map the possible relationships between Lean practices and particular Green performances. The general findings of the research outline that the environmental performance of the company is enhanced in the long-term after the implementation of Lean practices