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ContinuousMultimodal Global Optimization with Differential Evolution-Based Methods
(Lappeenranta University of Technology, 2009-12-08)
Metaheuristic methods have become increasingly popular approaches in solving global optimization problems. From a practical viewpoint, it is often desirable to perform multimodal optimization which, enables the search of ...
Optimizing of intelligence level in welding
(Lappeenranta University of Technology, 2009-12-04)
The productivity, quality and cost efficiency of welding work are critical for metal industry today. Welding processes must get more effective and this can be done by mechanization and automation. Those systems are always ...
Challenges in packaging waste management: A case study in the fast food industry
(2006-08-18)
The main research problem of this thesis is to find out the means of promoting the recovery of packaging waste generated in thefast food industry. The recovery of packaging waste generated in the fast food industry is ...
Analysis of Industrial Granular Flow Applications by Using Advanced Collision Models
(Lappeenranta University of Technology, 2007-12-19)
Granular flow phenomena are frequently encountered in the design of process and industrial plants in the traditional fields of the chemical, nuclear and oil industries as well as in other activities such as food and materials ...
Development of filter media treatments for liquid filtration
(2007-12-18)
Woven monofilament, multifilament, and spun yarn filter media have long been the standard media in liquid filtration equipment. While the energy for a solid-liquid separation process is determined by the engineering work, ...
Minimizing Conducted RF-Emissions in Switch Mode Power Supplies Using Spread-Spectrum Techniques
(Lappeenranta University of Technology, 2004-03-12)
Switching power supplies are usually implemented with a control circuitry that uses constant clock frequency turning the power semiconductor switches on and off. A drawback of this customary operating principle is that the ...
Sliding Mode Control for Switched Mode Power Supplies
(2004)
Control applications of switched mode power supplies have been widely investigated. The main objective ofresearch and development (R&D) in this field is always to find the most suitable control method to be implemented in ...
ME - Mobile Electronic Personality
(2004-06-08)
Digital services require personal information for a variety of reasons. Due to advances in communication technology, new types of services are evolving alongwith traditional Internet services. Due to the diversity of ...
Isentropic Exergy and Pressure of the Shock Wave Caused by the Explosion of a Pressure Vessel
(2003-11-14)
An accidental burst of a pressure vessel is an uncontrollable and explosion-like batch process. In this study it is called an explosion. The destructive effectof a pressure vessel explosion is relative to the amount of ...
A modified structural stress method for fatigue assessment of welded structures
(2006-12-08)
Fatigue life assessment of weldedstructures is commonly based on the nominal stress method, but more flexible and accurate methods have been introduced. In general, the assessment accuracy is improved as more localized ...