著者

安藤 寛晃 渡辺 悦子 村田 次郎 尾崎 早智 久保 裕之 齊藤 直人 作田 友美 二宮 一史 羽取 美令 三部 勉 村上 遥菜

出版者

一般社団法人 日本物理学会

雑誌

日本物理学会講演概要集

巻号頁・発行日

vol.71, 2016

著者

齊藤 直 Nao SAITO

出版者

フェリス女学院大学国際交流学部紀要委員会

雑誌

国際交流研究 : 国際交流学部紀要 (ISSN:13447211)

巻号頁・発行日

vol.25, pp.55-77, 2023-03

著者

新関 久一 齊藤 直 知久 幸之介

出版者

自動制御連合講演会

雑誌

自動制御連合講演会講演論文集 第51回自動制御連合講演会

巻号頁・発行日

pp.161, 2008 (Released:2009-04-14)

被引用文献数

1

---

歩行運動などのリズミック運動時に運動リズムと心拍リズム間の位相シンクロが発生し,この現象が運動筋への血流確保と関連していることが示唆されている。本研究ではトレッドミル歩行運動時に呼吸と運動リズムの随意的な同期により,心拍リズムと運動リズム間の位相シンクロを自発的に誘発させ,酸素摂取量や換気効率,筋組織酸素動態等から身体システムにおけるシンクロ現象の生理的意義を検討した。

著者

三村 祐輝 阿部 光 齊藤 直 杉本 俊之 高橋 龍尚 柳田 裕隆

出版者

公益社団法人 日本生体医工学会

雑誌

生体医工学 (ISSN:1347443X)

巻号頁・発行日

vol.60, no.1, pp.25-31, 2022-03-10 (Released:2022-05-20)

参考文献数

30

---

In ultrasound systems, there is a trade-off between image quality and the number of transducers (elements) placed in the array probe, and to achieve a high resolution, the array probe must be created with additional elements. In 3D/4D echo, a significant number of elements are required compared to 2D echo, because imaging is performed using a two-dimensional array probe. As a result, 3D/4D echo inevitably has the problem of increasing equipment costs. To solve this problem, it is necessary to develop a method to reconstruct images with higher resolution using fewer elements than conventional imaging methods. The L1-norm minimization method has attracted much attention in recent years because of its ability to reconstruct high-resolution images even from incomplete data. In this study, we investigated whether high quality images can be reconstructed by minimizing the L1 norm for an object with an orientation, height, and depth of the imaging area (3D object). We also used image quality evaluation methods (MSE: Mean Squared Error, PSNR: Peak Signal to Noise Ratio, and SSIM: Structural SIMilarity) to quantitatively evaluate the obtained images. The results confirmed that L1-norm minimization is capable of reconstructing high-quality images with high evaluation values in all image quality evaluation methods compared to conventional methods.

著者

齊藤 直

出版者

経営史学会

雑誌

経営史学 (ISSN:03869113)

巻号頁・発行日

vol.51, no.3, pp.27-48, 2016 (Released:2019-03-30)

---

The purpose of this paper is to examine the background factors behind “anomalistic” capital increases (hentai zoshi) by Japanese corporations during the interwar period. Hentai zoshi means capital increases by establishing another company and immediately merging it.In most of previous researches, Commercial Code, which prohibited corporations from issuing new stocks before the shareholders pays full face value, has been considered as the background factor of hentai zoshi. However, the authenticity for the idea remains uncertain.In this paper, we analyze the case of the merger between Meiji Sugar Manufacturing Company and Shin-Meiji Sugar Manufacturing Company in 1927, and attempt to demonstrate that not only Commercial Code but also business decision played an important role to choose rather hentai zoshi than other options of raising fund. The main findings of this paper are as follows.1) Shin-Meiji Sugar Manufacturing Company was established by Meiji Sugar Manufacturing Company for the purpose of acquiring the production equipment of Toyo Sugar Manufacturing Company, which had affiliated with Suzuki & Co.2) Stocks of Shin-Meiji Sugar Manufacturing Company were allocated to the shareholders of Meiji Sugar Manufacturing Company.3) When Shin-Meiji Sugar Manufacturing Company was merged, the stocks of it were discounted 40 %. Moreover, the information of this discount was announced before the offering of the stocks.4) One of the background factors of this hentai zoshi could be ascribed to Meiji Sugar Manufacturing Company's motives to discount overvalued assets.5) The excellent condition of the business performance and the stock price allowed Meiji Sugar Manufacturing Company to implement this hentai zoshi.

著者

齊藤 直

出版者

Business History Society of Japan

雑誌

経営史学 (ISSN:03869113)

巻号頁・発行日

vol.43, no.4, pp.4_28-4_54, 2009 (Released:2012-02-11)

被引用文献数

1

---

This paper aims to illustrate the pressure from the capital market brought to even national policy concerns, by analyzing the relationship between Taiwan Development Company (TDC) and its shareholders.In most of previous researches, TDC's shareholders were supposed to be “stable shareholders,” which would not sell their stocks even if the investment destination shows poor business performance, because TDC is a national policy concern. In the procedure of founding TDC in 1936, “stable shareholders” were welcomed and, in fact, two thirds stocks were allocated to foundation members and institutional shareholders such as sugar manufacturing companies or zaibatsu holding companies. However, it is not empirically supported that they did not sell their stocks in the secondary market.In this paper, we investigate selling and buying by all shareholders of TDC, using the list of shareholders from 1937 to 1943, and illustrate the counterplan arranged by managers of TDC, analyzing the company documents. The main findings of this paper are as follows.1) Individual minority shareholders had continuously sold their stocks since shortly after the foundation of TDC. As a result, the number of shareholders had gradually decreased.2) Institutional shareholders began to sell the stocks of TDC from around the latter half of 1941. Even sugar manufacturing companies except for Meiji Seito sold their stocks at this time. And when TDC increased capital in 1942, considerable parts of institutional shareholders did not subscribe newly issued stocks.3) The managers of TDC seriously recognized the pressure from the capital market and attempted to raise profitability and seek new shareholders.4) It is financial institutions such as mutual loan companies or life insurance companies that purchases stocks of TDC, which were sold by institutional shareholders. They should be considered to have financially supported TDC since around 1941.

著者

金津 努 中井 雅司 齊藤 直

出版者

公益社団法人 日本コンクリート工学会

雑誌

コンクリート工学 (ISSN:03871061)

巻号頁・発行日

vol.48, no.9, pp.9_54-9_57, 2010 (Released:2012-03-27)

参考文献数

10

被引用文献数

1

著者

齊藤 直

出版者

早稲田商学同攻会

雑誌

早稲田商学 (ISSN:03873404)

巻号頁・発行日

vol.416, pp.71-103, 2008-06

---

論文

著者

深尾 祥紀 今津 義充 唐津 謙一 栗田 和好 齊藤 直人 Park Sanghwa 庄司 幸平 竹谷 篤 谷田 聖 中川 格 中村 克朗 廣田 誠子 三部 勉 村上 哲也 村田 次郎 Seidl Ralf 渡邉 健太郎 PHENIX Collaboration

出版者

一般社団法人日本物理学会

雑誌

日本物理学会講演概要集 (ISSN:13428349)

巻号頁・発行日

vol.66, no.2, 2011-08-24