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|In this paper we decouple the translational and rotational degrees of freedom of the end-e ector of parallel manipulators, and hence, decompose the direct kinematics problem into two simpler sub-problems. Most of the redundant joint-sensor layouts produce a linear decoupling equation expressing the least-square solution of position for a given orientation(More)
2014 The random field Ising model (RFIM) is investigated from the complexity point of view. We prove that finding a ground state of the ferromagnetic RFIM is a polynomial (P) optimization problem in any dimension d. A new rigidity algorithm for the search of the ground state morphology is also given. In contrast, the problem associated to the(More)
A connection between integrability properties and general statistical properties of the spectra of symmetric transfer matrices of the asymmetric eight-vertex model is studied using random matrix theory (eigenvalue spacing distribution and spectral rigidity). For Yang-Baxter integrable cases, including free-fermion solutions, we have found a Poissonian(More)
External postoperative radiation therapy for retroperitoneal sarcoma is an example of treatment using large fields for complex shaped volumes of irradiation. Prescribed dose is limited by tolerance of adjacent organs at risk (OAR). From a recent case treated by conventional conformal radiotherapy (3D-CRT), we evaluate the benefit of five theoretical IMRT(More)
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