Toiminnanohjausjärjestelmän kehityssuunnat projektipohjaisessa yrityksessä

The master’s thesis focuses on the ERP system of a project company that delivers large-scale industrial plants from a purchasing point of view. The point of time is couple of years after implementation. Opinion of the people working in purchasing is that the ERP system isn’t performing satisfyingly. The first objective for the thesis is to find out the causes of the problems based on theory. It’s possible the system may not be suitable for project business or there may be deficiencies in the system that cause the problems. The second objective for the thesis is to propose solutions to the observed problems based on theory and vision how the system should function. The outcome of the thesis was that the main causes for the problems were connected to the ways of using the system and engineering activities being left outside the scope of ERP. The processes connected to the ERP system are not documented, so the rules for using the system are missing. The thesis describes developing and influences to the organization of a function that enables uploading purchase requisitions to projects from a text file. It was discovered that the function solves many problems and enables other functions that enhance further ambitions to integrate even more of the company’s processes to the ERP system. Conclusion to the thesis is a vision how the system should function and development activities needed to achieve this vision.

Konsentroitujen liuosten nanosuodatus

The aim of this thesis was to study the retentions of an organic acid and neutral components separately and in mixed solutions. The literature part of this study deals with factors affecting retention in nanofiltration. Nanofiltration is a complex process where many factors are affecting retention depending on the solution, molecule and membrane properties and their interactions. Concentrated model solutions were filtered with Desal-5 DL, NTR 7470 and NF 270 nanofiltration membranes in the experimental part of this work. The effects of pH, pressure and flux on retention were studied. Citric acid was used as the organic acid and the neutral components were inositol, betaine and xylitol. All components were filtered separately. The neutral compounds were also filtered together with citric acid. The filtrations were performed at Lappeenranta University of Technology using laboratory scale nanofiltration equipment. The retentions of neutral components were constant when filtered separately at different pH values. Citric acid had a significant influence on the retention of the neutral compounds. The retentions of neutral compounds decreased significantly when pH increased. The neutral compounds did not have any affect on the retention of citric acid. The retentions of model compounds increased when the flux increased.

Setukaisrunoutta suomeksi

Kirja-arvio

Suomen järvien syvyyssuhteet

English abstract

Edustuksellisuus tuloksellisuusarvioinnissa - yt-elimet ja osallisuus kunnallisessa tuloksellisuusarvioinnissa

Abstract: Representativeness in evaluation of efficiency - cooperative organs and participation in municipal evaluation of efficiency

Rajoilla ja keskuksissa : Folklore Fellows' Summer School 2007

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