This paper reviews an efficient inversion technique for complex media utilizing transient electromagnetic scattering data. The approach to solve the scattering problems (direct and inverse) relies on a wave splitting technique and an invariant imbedding technique. The analysis is illustrated by a numerical example.

Shortly before Christmas 2012, in a Beijing flea market and at a price, I was offered a cache of more than two thousand moth-eaten surveillance (“stake-out”) logs from the early 1950s emanating with the Bureau of Public Security in the city of Harbin, Manchuria. Unable to figure out what to do with them, I turned the offer down. Only later did it dawn on the historian in me that the logs just migh

What are the social positions of adults who were in long-term foster care as children, compared with the general population and with adults who grew up at home in families similar to foster children's birth families? How common is it to have been in foster care? Four approaches are used in this study: - A systematic review of around 50 studies on adult foster children. Conclusions are more pessim

The article emphasizes the opportunities presented to local potentates provided by the establishment of the Dutch East India Company as de facto sovereignty over West Java. Those seizing the opportunities prospered as never before; those who did not went under. The process altered indelibly the fabric of Javanese society.

Conditions for discontinuous bifurcations of the incremental fields in elastic-platic materials subjected to the condition of either plane stress or plane strain are derived and explicit expressions for the critical hardening modulus and the corresponding bifurcation directions are obtained for a quite general class of plasticity models. The only restriction is that the gradients of the yield func

The ability to identify craft specialization in the archaeological record has wider ramifications for the study of prehistoric society, since it is apparent that there is a certain relationship between the organization of craft specialization and social complexity. It is fruitful to distinguish among 3 categories here: household production on the one hand, and attached and independent craft specia

Popular Abstract in Swedish Organiskt kol och mikroorganismer har ofta en mycket hög spatiell variation i jorden. Dessutom är mikroorganismer ofta begränsade av mängden kol även om detta beror på den den relativa koncentrationen av kväve, fosfor och organiskt kol i systemet. Man kan dock anta att mikroorganismers biomassa och aktivitet kan samvariera med halten organiskt kol i jordar som har en föOrganic carbon and bacteria have a high variability at different scales in the soil, and organic carbon may be a limiting factor for growth of soil bacteria. Thus, it can be expected that these co-vary at different scales in the soil. In this thesis, I have studied the spatial interaction between soil bacteria and natural and contaminant (polycyclic aromatic hydrocarbon, PAH) organic carbon. The o

The content of the European research project MAnaging Speeds of Traffic on European Roads (MASTER) is presented. Speed management is described as a two-step process where target speeds for different kinds of roads are determined first, and then various measures and tools are applied in order to adopt such speed. Current practice and main problems in speed management are described. The various impa

The present report gives a general discussion of typical behaviour and modelling concepts used in soil mechanics. Characteristic mechanical features for friction materials, such as stress state dependency, nonlinearity, dilation and anisotropy, are discussed as well as the factors affecting such features. A short overview of existing model concepts used in soil mechanics is presented. Various appr