A Concordance to Filostrato

This paper is based upon my research carried out with a Grant-in-Aid for Scientific Research (C) from the Ministry of Education, Science, Culture and Sports. The number is 07610464

Extreme plurisubharmonic singularities

A plurisubharmonic singularity is extreme if it cannot be represented as the sum of non-homothetic singularities. A complete characterization of such singularities is given for the case of homogeneous singularities (in particular, those determined by generic holomorphic mappings) in terms of decomposability of certain convex sets in \Rn. Another class of extreme singularities is presented by means of a notion of relative type.Comment: 10 pages; final form, to appear in Ann. Polon. Mat

ボッカッチョIl Filostratoにおける動詞活用について

Boccaccio\u27s Il Filostrato is essential for studying Chaucer\u27s Troilus and Criseyde. However, while reading this work, it was apparent that there are many verbs whose conjugations are different from those in contemporary Italian. The purpose of this paper is to clarify the conjugations of the verbs used in Il Filostrato. First, the present author discusses the overall features of the Italian verbs that appear in this work from both morphologic and syntactic viewpoints. Second, the author deals with the verbs, avere and essere, and makes their special conjugations clear. Part of the conclusions in this paper are stated below. 1. Il Filostrato is a poetic work. Therefore, poetic rules affect the conjugations of the Italian verbs. 2. Boccaccio uses special conjugations if verbs are placed at the end of the line. 3. Different conjugations of avere and essere can be observed in the future, imperfect, past historic, present subjunctive and present conditional tenses

Biomechanical Analysis of a Pedicle Screw-Rod System with a Novel Cross-Link Configuration

Study DesignThe strength effects of a pedicle screw-rod system supplemented with a novel cross-link configuration were biomechanically evaluated in porcine spines.PurposeTo assess the biomechanical differences between a conventional cross-link pedicle screw-rod system versus a novel cross-link instrumentation, and to determine the effect of the cross-links.Overview of LiteratureTransverse cross-link systems affect torsional rigidity, but are thought to have little impact on the sagittal motion of spinal constructs. We tested the strength effects in pullout and flexion-compression tests of novel cross-link pedicle screw constructs using porcine thoracic and lumbar vertebrae.MethodsFive matched thoracic and lumbar vertebral segments from 15 porcine spines were instrumented with 5.0-mm pedicle screws, which were then connected with 6.0-mm rods after partial corpectomy in the middle vertebral body. The forces required for construct failure in pullout and flexion-compression tests were examined in a randomized manner for three different cross-link configurations: un-cross-link control, conventional cross-link, and cross-link passing through the base of the spinous process. Statistical comparisons of strength data were analyzed using Student's t-tests.ResultsThe spinous process group required a significantly greater pullout force for construct failure than the control group (p=0.036). No difference was found between the control and cross-link groups, or the cross-link and spinous process groups in pullout testing. In flexion-compression testing, the spinous processes group required significantly greater forces for construct failure than the control and cross-link groups (p<0.001 and p=0.003, respectively). However, there was no difference between the control and cross-link groups.ConclusionsA novel cross-link configuration that features cross-link devices passing through the base of the spinous processes increased the mechanical resistance in pullout and flexion-compression testing compared to un-cross-link constructs. This configuration provided more resistance to middle-column damage under flexion-compression testing than conventional cross-link configuration