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A study on extended DLDC-aided blind signal detection in unified optical and wireless channels
Get PDF高周波数帯の利用には，分散アンテナ子局 (DU: Distributed Unit) をセル基地局 (CU: Central Unit) の配下に複数設けたC-RAN(Cloud-Radio Access Network)構成が有効である．端末からCUへの上り回線において，端末-DU間では無線信号のマルチユーザ検出，DU-CU間では光ファイバの有線通信が行われる中継通信路の形態となる．有線通信にPDM(Polarization Division Multiplexing)通信を用いることにより，光ファイバ中にMIMO(Multi-Input Multi-Output)通信路を構築することができ，大容量化が可能となる．この構成ではDUとCUの両方でMIMO信号検出を行う必要があり，送受信間で信号処理遅延を引き起こしてしまう．本検討では，即応性を高めることを目的に，DUでは信号検出を行うことなく単純に転送のみを行い，CUにて信号検出を行うものとする．このとき，無線空間と光空間を統合し，一つのMIMO通信路とみなした一括ブラインド信号検出が有効である．本検討では，このブラインド信号検出を実現するDLDC(Differential Linear Dispersion Code)の適用方法を提案する．One of the solutions for utilizing the high-frequency band is to deploy multiple distributed units (DUs) under a central unit (CU) in cloud radio access network (C-RAN) architecture. In the case of the uplink from the terminal to the CU, wireless links are established between the mobile terminals and DU. On the other hand, optical fibers are connected between the DU and CU. When PDM (Polarization Division Multiplexing) communication is used for optical communications, it is possible to construct multi-input multi-output (MIMO) channels in the fiber. In this configuration, both DU and CU need to detect MIMO signals, which causes severe signal processing delay. In this paper, to improve the responsiveness, it is assumed that the DU does not detect the signal but simply transfers, and only the CU detects the signal. At this time, it is effective to perform blind signal detection after unifying the wireless space and the optical space as one MIMO channel. This paper presents a novel method for demodulating in a CU using differential linear dispersion code (DLDC) to realize blind signal detection.departmental bulletin pape
ラーニング コモンズ カラ イマデガワ ト キョウタナベ オ ツナグ : イチネンカン ノ LA カツドウ オ ツウジテ カンガエタ コト
Get PDF第一部同志社大学学習支援・教育開発センター活動報告(1)ラーニング・コモンズ活動報告departmental bulletin pape
Singlet oxygen from endoperoxide initiates an intracellular ROS release in HaCaT keratinocytes
Get PDF本研究は、エンドペルオキシド（熱分解により一重項酸素を定量的に放出する試薬）でHaCaTケラチノサイトを刺激することにより、細胞内で二次活性酸素種（ROS）が放出される効果を調べることに主眼を置いている。この現象が起こるかどうか、ひいてはどのように起こるかを理解するために、特定のROS阻害剤および/または酵素（NOX）およびPAF受容体阻害剤を使用した。二次的活性酸素、特にスーパーオキシド、過酸化水素、一重項酸素の放出を確認するために、化学発光およびROS感受性アッセイが採用された。This research is focused on studying the effects of stimulating HaCaT keratinocytes with endoperoxide (a reagent that quantitatively releases singlet oxygen by thermal decomposition) on the release of secondary reactive oxygen species (ROS) intracellularly. To understand whether this phenomenon occurs, and consequently how it occurs, specific ROS inhibitors and/ or enzyme (NOX) and PAF receptor inhibitors were used. Chemiluminescence and ROS sensitive assays were employed to confirm the release of secondary ROS, particularly superoxide, hydrogen peroxide and singlet oxygen.doctoral thesi
Intercultural business communication challenges : a documentation study toward cross-cultural competence between Egypt and Japan
Get PDFIn our globalized world, the flow of people, ideas, and money has become quicker. Multinational and global projects can expand their businesses beyond national borders easier than before. Working with people from various cultural backgrounds has become more common, from which new challenges arise. Thus, a global expansion means adaptation and customization are essential to be accepted by the new host countries. During this recontextualization and re-localization process, many businesses fail due to the lack of cross-cultural competence (CC), the inability to interact effectively with people of different cultures, and poor international expatriates’ communication skills. These attracted researchers to study Toyota and Kaizen from different perspectives other than business and management systems. Such as culture, history, and communication perspectives, affect people’s mindsets and communication.As opposed to the previous research, this research focuses on Kaizen and communication in international business from a cultural perspective. This study highlights the communication challenges that emerge from the cultural differences when recontextualizing Kaizen in Egypt. This research is a culture in business research. It is a baseline research that aims to know how the troubles and conflicts derived from non-verbalized parts can be verbalized by keeping a record and documenting the current situation in Egypt. The author used qualitative methods with a combination of literature analysis of Kaizen, cross-cultural competence research as secondary data, and analysis of in-depth, open-ended interviews that were conducted in Egypt and Japan as primary data. To clarify the communication patterns and suggest how to achieve cross-cultural competence in Toyota Motor Engineering Egypt (TMEE) and Kaizen Center in Egypt. This research tries to draw a communication or/and a cultural map to explain the cultural background and meaning of the communication patterns between Egyptians and Japanese. To help the involved parties reduce the miscommunication gap and maximize collaboration through their work experiences.doctoral thesi
The parliamentarians from the perspective of a journalist with experience studying in the United States : political activities of Seki Wachi against the Anti-Japan exclusion movement
Get PDF本稿は20世紀初頭，アメリカで学位を取り，1910年代，20年代に衆議院で活躍したジャーナリストである関和知を例に，排日問題に取り組む政治家の活動，思想を明らかにするものである。学資の不足から留学先で働くことを余儀なくされ，彼はアメリカ社会のさまざまな階層を間近に見た。帰国後は『万朝報』『東京毎日新聞』で記者を勤め，1909年に衆議院議員となった。排日土地法案に対抗して中野武営らと相談会を催し，第18 回列国議会同盟会議では，アメリカの代議士たちと日米部会を結成するなど，具体的な政治活動を展開した。日米両国民の感情の行き違いに焦点を合わせ，互いの理解を深めることが最善であると訴えた。This paper clarifies the activities and ideas of politicians working on the issue of the Anti-Japan Exclusion Movement. To illustrate, we focus on SEKI Wachi, a journalist who earned a degree in the United States and then acted as a lawmaker in the House of Representatives in the 1910s and 20s. Financial poverty forced him to work while studying abroad, giving him an upclose view of the various strata of American society. After returning to Japan, he worked as an editor for the newspapers Yorozu Choho and the Tokyo Mainichi Shimbun. In 1909, he became a member of the House of Representatives. He organized a consultation meeting with NAKANO Takenaka and others to oppose the California Alien Land Law. In addition, he engaged in other concrete political activities, such as forming the Japanese-American Section in the Inter-Parliamentary Union with American delegates at the 18th Conference. He emphasized that it is important to focus on the emotional differences between the people of the two countries in order to deepen mutual understanding.論文(Article)departmental bulletin pape
The beginning of Female Education at Doshisha
Get PDF論叢(Article)シンポジウム『同志社にとっての1876年』(Symposium:the meaning of 1876 for Doshisha)departmental bulletin pape
Relationship between Mashino Yoshioki's "Diary" in his later years and The Japan Dojin Christian Church -2-
Get PDF資料紹介(Historical Document)departmental bulletin pape
Effects of individual differences in emotion estimation based on music and EEG
Get PDF脳波を用いた感情認識は，様々な機械的手法において注目されている．しかし，脳波は非線形であるため感情認識は困難である．そこで本研究では，Convolutional Neural Network(CNN)を用いた感情推定のための回帰モデルを提案する．脳波のオープンデータであるDeapを用いて，提案手法が正則化を用いることで性能が向上するか検証を行う．また，検証の結果その性能は個人によって異なることが確認された．提案手法は一般的なモデルであるが，個人差を取り入れることで性能が向上する．Emotion recognition using electroencephalogram (EEG) has been paid much attention based on various machine learning techniques. Recognizing emotion is a difficult task due to the non-linear nature of the EEG signal. In this study, we propose a regression model for emotion estimation using Convolutional Neural Networks (CNN). Using EEG open data set, DEAP, we verify that the proposed method slightly improved the performance by incorporating regularization terms. We also observed that the performance is different in each individual. The proposed method is a general model but would enhance the performance by incorporating individual differences.departmental bulletin pape