研究生研究報告 日蓮聖人伝記諸本の一考察

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Electrification／digitalization and issues of employment of the German automaker -with the central focus on German locations of VW Group-

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Fibrational Theory of Behaviors and Observations: Bisimulation, Logic, and Games from Modalities

総合研究大学院大学博士（情報学）application/pdf総研大甲第2415号doctoral thesi

クスノオオキクイムシとアンブロシア菌の共生機構とその適応的意義

名古屋大学NAGOYA University博士(農学)名古屋大学博士学位論文 学位の種類:博士(農学) (課程) 学位授与年月日:平成6年3月25日doctoral thesi

Recent Problems of Hot Spring and Spa

研究玉村和彦教授 定年退職記念号application/pdfdepartmental bulletin pape

A Case of Congenital Open-Type Cholesteatoma Diagnosed by Diffusion-Weighted MRI Using the PROPELLER Technique

浜松医科大学医学部耳鼻咽喉科・頭頸部外科学教室　峯田周幸教授退任記念論文集～症例から学ぶ～Festschrift for Professor Hiroyuki Mineta In Hornor of His Retirement as Chairman of Hamamatsu University School of MedicineCongenital cholesteatoma in the tympanic cavity can be divided into two types - the closed-type cholesteatoma, which takes the form of a keratotic cyst, and the open-type cholesteatoma, characterized by a flat surface of the epidermis on the middle ear mucosa. Closed-type cholesteatoma is usually identified as a globular white mass through a normal tympanic membrane; whereas the tympanic membrane appears normal in open-type cholesteatomas. Therefore, it is difficult to diagnose open-type cholesteatomas, which are often identified accidentally during exploratory tympanotomy for preoperative diagnoses such as conductive hearing loss. Herein, we report a case of open-type cholesteatoma, in which the diagnosis was suspected from the findings of diffusion-weighted MRI examination using the periodically rotated overlapping parallel lines with enhanced reconstruction (PROPELLER) technique. An 18-year-old male presented to our hospital with the complaint of right hearing loss, which was suspected at a previous ENT clinic to be caused by a congenital ossicular anomaly. Otoscopic examination failed to reveal any abnormalities. Pure-tone audiometry showed moderate conductive hearing loss in the right ear. Computed tomography of the temporal bone revealed a defect of the long process of the incus and superstructure of the stapes, with a surrounding shadow that appeared to be soft tissue. On the basis of these findings, we suspected an open-type cholesteatoma with a defect of the ossicles. Diffusion-weighted MRI examination using the PROPELLER technique showed a high-intensity in the temporal bone, suggestive of a cholesteatoma. We performed exploratory tympanotomy, and found the open-type cholesteatoma in the middle ear. The cholesteatoma was removed without ossiculoplasty, and until now, nine months after the surgery, there has been no sign of recurrence. Our case showed the usefulness of diffusion-weighted MRI using the PROPELLER technique for the diagnosis of the open-type cholesteatoma. The possibility of open-type cholesteatoma should be borne in mind in patients diagnosed preoperatively as having a congenital ossicular anomaly, and diffusion-weighted MRI with the PROPELLER technique is indicated in such patients towards confirming the diagnosis.journal articl

Tsunami Propagation Analysis Based on Recorded Videos on the Web Site

At 14:46 local time on March 11, 2011, a magnitude 9.0 earthquake occurred off the coast of northeast Japan. It was one of the most powerful earthquakes to have hit Japan. This earthquake caused a Tsunami which attacked Japan as well as a wide range of localities around the Pacific Ocean. According to the report of Japan Meteorological Agency, inundation heights were observed between about 7m and about 12m from the northern part of Fukushima Prefecture to the southern part of Iwate Prefecture. The authors focus on the characteristics of Tsunami in the propagation process. Study is based on the videos shot when Tsunami came. From the analysis of Tsunami propagation, it is known that Tsunami will inundate fast the some area.departmental bulletin pape

商法と会計 : 歴史から見る相互の関係

application/pdf学会講演会departmental bulletin pape

Evaluation of Fast-Convergence Algorithm for Blind Source Separation of Real Convolutive Mixture

We propose a new algorithm for blind source separation (BSS), in which independent component analysis (ICA) and beamforming are combined to resolve the low-convergence problem through optimization in ICA. The proposed method consists of the following three parts: (1) frequency-domain ICA with direction-of-arrival (DOA) estimation; (2) beamforming based on the estimated DOA; (3) integration of (1) and (2) based on the algorithm diversity in both iteration and frequency domain. The inverse of the mixing matrix obtained by ICA is temporally substituted by the matrix based on beamforming through iterative optimization, and the temporal alternation between ICA and beamforming can realize fast- and high-convergence optimization. The results of the signal separation experiments reveal that the signal separation performance of the proposed algorithm is superior to that of the conventional ICA-based BSS method, even under reverberant conditions.conference pape

[The Xi'an Incident and the Chinese Communist Party: Several Problems in the Process of Policy Making]

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