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On the complexity of column generation in survivable network design with path-based survivability mechanisms

This paper deals with path-based linear programming formulations in survivable network design. In a recent survey we have investigated the complexity of the column generation problems for a large variety of protection and restoration mechanisms in a single or multiple link failure scenario, and classified them according to their structure. It turned out that all the considered column generation pr

Knowledge Representation by Scripts in an Expert Interface

System identification demands skill and experience, and the validity of the results strongly depends on the user'sknowledge. For this reason a help facility that uses domain specific knowledge about system identification is needed. This paper deals with the representation of knowledge in an expert interface for system identification, using the interactive identification package "Idpac". The concep

Accounting and auditing in municipal organisations – Four papers on accounting compliance and audit costs

Popular Abstract in English Over the last 30 years, the implementation of accrual accounting in public sector settings has been fundamental to public sector accounting policy development. The move from cash accounting to accrual accounting highlights the importance of understanding accounting choice, compliance and auditing in municipal organisations. This thesis is a quantitative study of accountThis thesis is a quantitative study of accounting compliance and audit costs in Swedish municipal organisations, consisting of four papers. Three of the papers explore factors that explain accounting compliance concerning financial reporting and revenue recognition in Swedish municipal water, sewerage and solid waste management organisations. The fourth paper explores the determinants of professio

Conformational change of complement proteins C3 and C4 induced by methylamine: An X-ray scattering study

Analysis of X-ray scattering data from dilute solutions of the complement proteins C3, C4 and C5 yields the radii of gyration 4.5, 4.25 and 4.8 nm, and the maximum distances within the molecules (Dmax) of 18, 14.5 and 14 nm, respectively. The X-ray data of C4 are compatible with the scattering from one single triaxial body represented as an elliptic cylinder with the semiaxes 5.6 and 2.1 nm and a