A Source Identification Problem for the Electrical Activity of Brain During Hand Movement

A field source reconstruction of the dipoles modeling the activated area of the brain, while a subject performs the task of the voluntary motion of the hand, is solved. Experimental data resulting from fMRI are used for constraining the position of the equivalent dipole

Dual-PEEC Modeling of a Two-Port TEM Cell for VHF Applications

Two-port TEM cells with rectangular cross section are commonly used to produce plane electromagnetic waves with high electric field. The non-uniform structure makes the use of numerical methods extremely useful in the design phase in order to achieve a very good behavior of the TEM cell over a wide frequency range of operation. In this paper an extended version of PEEC is used to study a real device and results are compared with experimental ones

Adaptive Reuse

The present volume explores a specific aspect of creativity in South Asian systems of knowledge, literature and rituals. Under the heading of “adaptive reuse,” it discusses the relationship between innovation and perpetuation of earlier forms and contents of knowledge and aesthetic expressions within the process of creating new works. Although this relation rarely became the topic of explicit reflections in the South Asian intellectual traditions, it is here investigated by taking a closer look at the treatment of older materials by later authors."Adaptive Reuse" ist ein wichtiges theoretisches Konzept aus dem Bereich der Architektur. Dort bezeichnete es die Verwendung eines teilweise umgebauten Gebäudes zu andern Zwecken als denen seiner ursprünglichen Errichtung. Im vorliegenden Band wird dieses Konzept zum ersten Mal auf ein weiteres Spektrum kulturellen Schaffens übertragen, nämlich auf die Komposition von Texten und auf die Kreation neuer Konzepte und Ritual

Identification of material properties and optimal design of magnetically shielded rooms

In this paper, we propose an optimal design procedure for magnetically shielded rooms. Focusing on multi-layer ferromagnetic structures, where inner layers operate at very low magnetic field, we propose an identification method of the magnetic material characteristic in the Rayleigh region. A numerical model to simulate the shielding efficiency of a multi-layer ferromagnetic structure is presented and experimentally tested on different geometries and layer configurations. The fixed point iterative method is adopted to handle the nonlinearity of the magnetic material. In conclusion, the optimization of the design parameters of a MSR is discussed, using the Vector Immune System algorithm to minimize the magnetic field inside the room and the cost of the structure. The results highlight that a linear magnetic characteristic for the material is sufficient to identify the suitable geometry of the shield, but the nonlinear model in the Rayleigh region is of fundamental importance to determine a realistic shielding factor