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Integrated Management Systems - Theoretical and Practical Implications
Eriksson, Henrik,Hansson, Jonas The Korean Society for Quality Management 2006 The Asian Journal on Quality Vol.7 No.2
Organisations worldwide strive to develop their management systems for business functions, ranging from quality and environment to safety, information security and social responsibility. During the latest decade a considerable amount of these efforts has been concentrated on introducing and applying standards such as the ISO 9001 and ISO 14001. The need for Integrated Management Systems (IMS) often arises as a result of decisions to implement Environmental Management System (EMS) and/or an occupational health and safety management system in addition to a Quality Management System (QMS). At the end of 2003, approximately 3200 organisations in Sweden had an ISO 9001 certificate, and approximately 3400 organisations had a certificate based on an EMS. Dealing with separate management systems and ensuring that they align with the organisation's strategies and goals, has proved difficult. Owing to the large number of organisations certified according to multiple types of systems, an increasing number of organisations are establishing IMS. There are examples of companies, which chose to integrate EMS and QMS into a co-ordinated implementation approach, and although sparse, the research within this area indicates potential benefits of using an integrated approach. This paper presents both a theoretical and an empirical investigation with the aim to elucidate problems related to the integration of management systems. Furthermore, the paper will present recommendations for succeeding in such integrations and, hence, contributing to an increased understanding on how IMSs should be designed and implemented.
An information-theoretic perspective on feature selection in speaker recognition
Eriksson, T.,Kim, S.,Kang, Hong-Goo,Lee, Chungyong IEEE 2005 IEEE signal processing letters Vol.12 No.7
This letter studies feature selection in speaker recognition from an information-theoretic view. We closely tie the performance, in terms of the expected classification error probability, to the mutual information between speaker identity and features. Information theory can then help us to make qualitative statements about feature selection and performance. We study various common features used for speaker recognition, such as mel-warped cepstrum coefficients and various parameterizations of linear prediction coefficients. The theory and experiments give valuable insights in feature selection and performance of speaker-recognition applications.
Carbon-nanotube-based Nano Electromechanical Switches
이상욱,Anders Eriksson,Abdelrahim A. Sourab,캠벨 한국물리학회 2009 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.55 No.3
The fabrication of carbon nanotube (CNT) based nano electromechanical (NEM) switches and their electro-mechanical properties are discussed. Two different types of nano electromechanical switches, a cantilever type and a doubly-clamped type, will be introduced. The proposal of three terminal structures for the CNT-based NEM switch could lead to improvements in the stability of the switching performance. Both dc electro-mechanical properties and high-frequency measurements are used to study the switching performance. A comparison of the switching performances of both types of nano electromechanical switches is discussed at the end of the paper. The fabrication of carbon nanotube (CNT) based nano electromechanical (NEM) switches and their electro-mechanical properties are discussed. Two different types of nano electromechanical switches, a cantilever type and a doubly-clamped type, will be introduced. The proposal of three terminal structures for the CNT-based NEM switch could lead to improvements in the stability of the switching performance. Both dc electro-mechanical properties and high-frequency measurements are used to study the switching performance. A comparison of the switching performances of both types of nano electromechanical switches is discussed at the end of the paper.
Computational study of khellin excited states and photobinding to DNA
Omar, Salama,Eriksson, Leif A. Korean Society of Photoscience 2009 Photochemical & photobiological sciences Vol.8 No.8
A theoretical investigation of the formation and spectroscopic properties of the furan and pyrone monoadducts between the photosensitizer khellin and DNA base thymine is reported. The thermal reaction pathways involve very high barriers, whereas the excited state surfaces display low barriers in regions leading to the ground state TS structures and potential wells at the ground state TS geometries. Computed UV absorption spectra are interpreted with the support of molecular orbital calculations, and the role of solvent effects on the spectra is discussed. The red-shift in the khellin spectra upon intercalation in DNA is excellently reproduced by the computational methodology, as is the solvent induced spectral shift. The data also provides an explanation to why khellin predominantly forms furan monoadducts in DNA, as opposed to the closely related psoralen compounds.