Finite Elements Magnetic Analysis of the CLIC MDI Region

Considering the current CLIC SiD detector design and the machine parameter L*, the final focus quadrupole QD0 will be placed inside the experiment itself. This configuration is very challenging from an integration point of view. Among several other aspects, the iron-dominated QD0 will need an active magnetic shielding to avoid undesired interactions with the magnetic field generated by the main solenoid of the detector. This shielding will be provided by a superconducting anti-solenoid, and this paper aims to describe the method used to design such device, the results obtained and the issues still to be solved.Comment: 7 pages, LCWS11 Granad

Two cases of sternal osteomyelitis due to Mycobacterium africanum: a casual or causal association

Abstract The sternal localization of bone and joint tuberculosis (TB) is rare, has an insidious clinical presentation, and usually affects young adults living in endemic areas. Mycobacterium africanum causes a relevant proportion of human TB in West Africa and in migrants from endemic countries . Here, we report two cases of sternal osteomyelitis due to M. africanum in migrants

Evaluation of Natural Language Tools for Italian: EVALITA 2007

EVALITA 2007, the first edition of the initiative devoted to the evaluation of Natural Language Processing tools for Italian, provided a shared framework where participants? systems had the possibility to be evaluated on five different tasks, namely Part of Speech Tagging (organised by the University of Bologna), Parsing (organised by the University of Torino), Word Sense Disambiguation (organised by CNR-ILC, Pisa), Temporal Expression Recognition and Normalization (organised by CELCT, Trento), and Named Entity Recognition (organised by FBK, Trento). We believe that the diffusion of shared tasks and shared evaluation practices is a crucial step towards the development of resources and tools for Natural Language Processing. Experiences of this kind, in fact, are a valuable contribution to the validation of existing models and data, allowing for consistent comparisons among approaches and among representation schemes. The good response obtained by EVALITA, both in the number of participants and in the quality of results, showed that pursuing such goals is feasible not only for English, but also for other languages

Evaluation of Natural Language Tools for Italian: EVALITA 2007

EVALITA 2007, the first edition of the initiative devoted to the evaluation of Natural Language Processing tools for Italian, provided a shared framework where participants\u2019 systems had the possibility to be evaluated on five different tasks, namely Part of Speech Tagging (organised by the University of Bologna), Parsing (organised by the University of Torino), Word Sense Disambiguation (organised by CNR-ILC, Pisa), Temporal Expression Recognition and Normalization (organised by CELCT, Trento), and Named Entity Recognition (organised by FBK, Trento). We believe that the diffusion of shared tasks and shared evaluation practices is a crucial step towards the development of resources and tools for Natural Language Processing. Experiences of this kind, in fact, are a valuable contribution to the validation of existing models and data, allowing for consistent comparisons among approaches and among representation schemes. The good response obtained by EVALITA, both in the number of participants and in the quality of results, showed that pursuing such goals is feasible not only for English, but also for other languages

Design of High Field Solenoids made of High Temperature Superconductors

This thesis starts from the analytical mechanical analysis of a superconducting solenoid, loaded by self generated Lorentz forces. Also, a finite element model is proposed and verified with the analytical results. To study the anisotropic behavior of a coil made by layers of superconductor and insulation, a finite element meso-mechanic model is proposed and designed. The resulting material properties are then used in the main solenoid analysis. In parallel, design work is performed as well: an existing Insert Test Facility (ITF) is adapted and structurally verified to support a coil made of YBa2Cu3O7, a High Temperature Superconductor (HTS). Finally, a technological winding process was proposed and the required tooling is designed

Design of the anti-solenoid system for the CLIC SiD Experiment

In the CLIC SiD experiment design baseline, with the machine parameter L* set to 3.5 m, the\nfinal focus quadrupole QD0 will be placed inside the detector itself. This configuration is very\nchallenging by an integration point of view.\nAmong several other aspects, the iron-dominated QD0 and the incoming beams will need an\nactive magnetic shielding to avoid unacceptable interactions with the magnetic field generated by\nthe main solenoid of the detector.\nAccording to the baseline design, this shielding is provided by a superconducting antisolenoid,\nand this note aims to describe the procedure followed to design it

The Microtubular Cytoskeleton during Pollen Development and Pollen Tube Growth in Nicotiana tabacum

The role of the male partner in the fertilization process in higher plants has been defined from long time (Stanley and Linskens, 1972). As shown by optical and ultrastructural investigations, some closely related steps such as pollen development, pollen release from the anther, pollen-stigma interaction, pollen tube emission and growth occur and each step is characterized by own morphological and physiological state