Hashimoto Kiyota 橋本喜代太

… Alternative Names

HASHIMOTO Kiyota 橋本喜代太

Less

Researcher Number	50278818
Other IDs
External Links
Affiliation (Current)	2025: 周南公立大学, 情報科学部, 教授
Affiliation (based on the past Project Information) *help	2010 – 2012: 大阪府立大学, 人間社会学部, 准教授 2007 – 2008: 大阪府立大学, 人間社会学部, 准教授 2005 – 2006: Osaka Prefectural University, School of Humanities & Social Sciences, associate professor, 人間社会学部, 助教授 2002 – 2004: 大阪女子大学, 人文社会学部, 助教授 2001: 大阪女子大学, 人文社会学部, 講師
Review Section/Research Field	Principal Investigator Foreign language education / 英語・英米文学 Except Principal Investigator Intelligent informatics / Media informatics/Database
Keywords	Principal Investigator 学習評価 / 学習者分析 / マルチメディアコーパス / 学習者評価 / 教材開発 / 特徴指標抽出 / 学習分析 / プレゼンテーション / 非言語コミュニケーション / 学習支援システム … More / コーパス / 英語教育 / プレゼンテーション教育 / 教育メディアー般 / 教材 / 教育工学 / 情報構造 / パラグラフ構成 / 論文作成 / 焦点 / トピック / 学習者コーパス / 結束性 / 論文作成支援 / 科学英語 … More Except Principal Investigator KWIC / コーパス / 多言語処理 / 自然言語処理 / multi-lingual processing / retrieval / database / dependency analysis / part-of-speech taggin / natural language processing / corpus / タグ付きコーパス / 文字列検索 / 単語検索 / 言語処理 / 言語コーパス / 検索 / データベース / 係り受け解析 / 品詞タグ付け / 電子文書 / ウェブサイト / スタイル / コロケーション / 複合語 / 語構成 / 用語解析 / 未知語解析 / 辞書システム / 複合語解析 / 形態素解析 / 辞書 / 語彙解析 Less

Foundational study in extracting, measuring and searching presentation styles and their patterns in digital documents
- Principal Investigator
  
  TAKEMURA Tomoko
- Project Period (FY)
  2011 – 2012
- Research Category
  
  Grant-in-Aid for Challenging Exploratory Research
- Research Field
  
  Media informatics/Database
- Research Institution
  Hitotsubashi University
Learner Analysis and Development of Educational Methods and Materials for Presentation in EnglishPrincipal Investigator
- Principal Investigator
  
  HASHIMOTO Kiyota
- Project Period (FY)
  2010 – 2012
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Research Field
  
  Foreign language education
- Research Institution
  Osaka Prefecture University
Research and Development of Multi-lingual Lexical Analysis System based on Word Construction
- Principal Investigator
  
  MATSUMOTO Yuji
- Project Period (FY)
  2006 – 2008
- Research Category
  
  Grant-in-Aid for Scientific Research (B)
- Research Field
  
  Intelligent informatics
- Research Institution
  Nara Institute of Science and Technology
Studies on Corpus Creation and Use for Linguistic Research
- Principal Investigator
  
  MATSUMOTO Yuji
- Project Period (FY)
  2003 – 2005
- Research Category
  
  Grant-in-Aid for Scientific Research (B)
- Research Field
  
  Intelligent informatics
- Research Institution
  Nara Institute of Science and Technology
実例・学習者両コーパスを利用した科学系英文論文の複数文間の連携に関する研究Principal Investigator
- Principal Investigator
  
  橋本喜代太
- Project Period (FY)
  2001 – 2002
- Research Category
  
  Grant-in-Aid for Young Scientists (B)
- Research Field
  
  英語・英米文学
- Research Institution
  Osaka Women's University

All 2013 2012 2011 2010 Other

All Journal Article Presentation Book

[Book] Prototypical Design of Learner Support Materials Based on the Analysis of Non-verbal Elements in Presentation, Watanabe, T.; Watada, J.; Takahashi, N.; Howlett, R.J.; Jain, L.C. (eds.) Intelligent Interactive Multimedia: Systems and Services (Smart Innova2012
- Author(s)
  Kiyota Hashimoto and Kazuhiro Takeuchi
- Publisher
  Springer
- Data Source
  KAKENHI-PROJECT-22520576
[Journal Article] Prototypical Design of Learner Support Materials based on the Analysis of Non-verbal Elements in Presentation2012
- Author(s)
  Kiyota Hashimoto
- Journal Title
  
  Smart Innovation, Systems and Technologies
  
  Volume: 14 Pages: 531-540
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-22520576
[Journal Article] Rhetorical Structure Ontology for Representing Learner's Presentations with Potential Textual Inconsistencies and Imperfections2011
- Author(s)
  Kiyota Hashimoto, Kazuhiro Takeuchi
- Journal Title
  
  ICIC ExpressLetters
  
  Volume: 5-5 Pages: 1649-1654
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-22520576
[Journal Article] Rhetorical Structure Ontology for Representing Learner's Presentations with Potential Textual Inconsistencies and Imperfections2011
- Author(s)
  Kiyota Hashimoto, Kazuhiro Takeuchi
- Journal Title
  
  ICIC Express Letters
  
  Volume: 5-5 Pages: 1649-1654
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-22520576
[Journal Article] Agent Simulation for Contents Evaluation with User Models for Hierarchical Knowledge Relations2011
- Author(s)
  Kiyota Hashimoto, Kazuhiro Takeuchi
- Journal Title
  
  Proc.of FUZZ-IEEE 2011
  
  Volume: (CD-ROM) Pages: 1049-1054
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-22520576
[Journal Article] A Task Ontology Construction for Presentation Skills2011
- Author(s)
  Kiyota Hashimoto, Kazuhiro Takeuchi
- Journal Title
  
  Proc.of 16th International Conference on Artificial Life and Robotics
  
  Pages: 162-165
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-22520576
[Journal Article] 英語プレゼンテーション学習支援基盤としてのタスクオントロジー構築2011
- Author(s)
  橋本喜代太, 竹内和広
- Journal Title
  
  教育システム情報学会全国大会講演論文集
  
  Volume: 36 Pages: 186-187
- Data Source
  KAKENHI-PROJECT-22520576
[Journal Article] 学生の習得度意識と向上率の逆相関(英文法項目別習得度アンケート調査結果と複数時期の英作文答案の比較から)2011
- Author(s)
  橋本喜代太
- Journal Title
  
  日本リメディアル教育学会全国大会発表予稿集
  
  Volume: 7 Pages: 73-74
- Data Source
  KAKENHI-PROJECT-22520576
[Journal Article] Multi-Layered Learner Knowledge Model for Evaluative Multi-Agent Simulation2011
- Author(s)
  Kiyota Hashimoto, Kazuhiro Takeuchi
- Journal Title
  
  Proc.of 3^<rd> iCAST
  
  Volume: (CD-ROM)
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-22520576
[Journal Article] 大学における英語プレゼンテーション教育のICT支援の要求分析2011
- Author(s)
  橋本喜代太, 竹内和弘
- Journal Title
  
  信学技報
  
  Volume: 111-39 Pages: 41-45
- NAID
  110008726064
- Data Source
  KAKENHI-PROJECT-22520576
[Journal Article] A Corpora-Based Detection of Stylistic Inconsistencies of Text in the Targeted Subgenre2010
- Author(s)
  Kiyota Hashimoto, Kazuhiro Takeuchi, Hideaki Ando
- Journal Title
  
  Artificial Life and Robotics
  
  Volume: 15-4 Pages: 486-490
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-22520576
[Journal Article] Prototypical Development of Awareness Promoting Learning Support System of Basic Presentation2010
- Author(s)
  Kiyota Hashimoto, Kazuhiro Takeuchi
- Journal Title
  
  Proc.of 2nd International Symposium on Aware Computing
  
  Pages: 304-311
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-22520576
[Journal Article] Multimedia Learner Corpus of Foreigner's Basic Presentation in English with Evaluations2010
- Author(s)
  Kiyota Hashimoto, Kazuhiro Takeuchi
- Journal Title
  
  Proceedings of International Conference on Educational and Information Technology
  
  Volume: 2 Pages: 469-473
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-22520576
[Presentation] 文書スタイル再考--見栄えと意図2013
- Author(s)
  橋本喜代太、武村知子、森田敏生
- Organizer
  電気学会/情報システム研究会
- Place of Presentation
  機械振興会館地下3階2号室
- Year and Date
  2013-05-14
- Data Source
  KAKENHI-PROJECT-23650045
[Presentation] Prototypical Design of Learner Support Materials based on the Analysis of Non- verbal Elements in Presentation2012
- Author(s)
  Kiyota Hashimoto
- Organizer
  KES-IIMSS 2012
- Place of Presentation
  長良川コンベンションセンター
- Data Source
  KAKENHI-PROJECT-22520576
[Presentation] An online learner support system for academic presentation2012
- Author(s)
  Kiyota Hashimoto
- Organizer
  ESP in Asia
- Place of Presentation
  香港・香港理工大学
- Year and Date
  2012-12-14
- Data Source
  KAKENHI-PROJECT-22520576
[Presentation] Prototypical Design of Learner Support Materials Based on the Analysis of Non-Verbal Elements in Presentation2012
- Author(s)
  Kiyota Hashimoto, Kazuhiro Takeuchi
- Organizer
  KES-IIMSS
- Place of Presentation
  岐阜
- Year and Date
  2012-05-22
- Data Source
  KAKENHI-PROJECT-22520576
[Presentation] An Online Learner Support System for Academic Presentation2012
- Author(s)
  Kiyota Hashimoto
- Organizer
  4th International Conference on ESP in Asia
- Place of Presentation
  香港理工大学（中華人民共和国)
- Data Source
  KAKENHI-PROJECT-22520576
[Presentation] Multi-Layered Learner Knowledge Model for Evaluative Multi-Agent Simulation2011
- Author(s)
  Kiyota Hashimoto, Kazuhiro Takeuchi
- Organizer
  3rd iCAST
- Place of Presentation
  中国・大連
- Data Source
  KAKENHI-PROJECT-22520576
[Presentation] 学生の習得度意識と向上率の逆相関(英文法項目別習得度アンケート調査結果と複数時期の英作文答案の比較から)2011
- Author(s)
  橋本喜代太
- Organizer
  日本リメディアル教育学会
- Place of Presentation
  福岡大学
- Year and Date
  2011-09-03
- Data Source
  KAKENHI-PROJECT-22520576
[Presentation] 複雑な知識モデルを利用した人間の学習プロセスシミュレーションの検討2011
- Author(s)
  橋本喜代太,竹内和広,廣川佐千男,殷成久
- Organizer
  情報処理学会知能システム研究会(SIG-ICS164)
- Place of Presentation
  熱海
- Year and Date
  2011-10-28
- Data Source
  KAKENHI-PROJECT-22520576
[Presentation] 英語プレゼンテーション作成支援機能の試作2011
- Author(s)
  橋本喜代太,竹内和広
- Organizer
  日本教育工学会研究会
- Place of Presentation
  静岡大学
- Year and Date
  2011-03-05
- Data Source
  KAKENHI-PROJECT-22520576
[Presentation] Awareness Promoting Learning Support System of Basic Presentation2011
- Author(s)
  Kiyota Hashimoto, Kazuhiro Takeuchi
- Organizer
  5th APTEL (Asia-Pacific Conference on Technology Enhanced Learning)
- Place of Presentation
  中国・西安
- Year and Date
  2011-08-12
- Data Source
  KAKENHI-PROJECT-22520576
[Presentation] A Task Ontology Construction for Presentation Skills2011
- Author(s)
  Kiyota Hashimoto, Kazuhiro Takeuchi
- Organizer
  The 16th International Conference on Artificial Life and Robotics
- Place of Presentation
  B-conプラザ(大分)
- Year and Date
  2011-01-29
- Data Source
  KAKENHI-PROJECT-22520576
[Presentation] 英語プレゼンテーション学習支援基盤としてのタスクオントロジー構築2011
- Author(s)
  橋本喜代太,竹内和広
- Organizer
  教育システム情報学会全国大会
- Place of Presentation
  広島市立大学
- Year and Date
  2011-09-27
- Data Source
  KAKENHI-PROJECT-22520576
[Presentation] Agent Simulation for Contents Evaluation with User Models for Hierarchical Knowledge Relations2011
- Author(s)
  Kiyota Hashimoto, Kazuhiro Takeuchi
- Organizer
  FUZZ-IEEE 2011
- Place of Presentation
  台湾(台北)
- Year and Date
  2011-06-28
- Data Source
  KAKENHI-PROJECT-22520576
[Presentation] A Task Ontology Construction for Presentation Skills2011
- Author(s)
  Kiyota Hashimoto, Kazuhiro Takeuchi
- Organizer
  The 16th International Conference on Artificial Life and Robotics
- Place of Presentation
  大分
- Year and Date
  2011-01-29
- Data Source
  KAKENHI-PROJECT-22520576
[Presentation] 大学における英語プレゼンテーション教育のICT支援の要求分析2011
- Author(s)
  橋本喜代太,竹内和広
- Organizer
  電子情報通信教育工学研究会
- Place of Presentation
  大阪府立大学
- Year and Date
  2011-05-14
- Data Source
  KAKENHI-PROJECT-22520576
[Presentation] Agent Simulation for Contents Evaluation with User Models for Hierarchical Knowledge Relations2011
- Author(s)
  Kiyota Hashimoto, Kazuhiro Takeuchi
- Organizer
  FUZZ-IEEE 2011
- Place of Presentation
  台湾・台北市
- Year and Date
  2011-06-28
- Data Source
  KAKENHI-PROJECT-22520576
[Presentation] What learners think they have learnt may go in the way of mastery: From a survey on English grammar of Japanese university students2011
- Author(s)
  Kiyota Hashimoto
- Organizer
  International Conference on EFL Education 2011
- Place of Presentation
  台湾・彰化市
- Year and Date
  2011-05-28
- Data Source
  KAKENHI-PROJECT-22520576
[Presentation] マルチメディア学習者英語プレゼンテーションコーパスの構築2011
- Author(s)
  橋本喜代太, 竹内和広
- Organizer
  言語処理学会第17回年次大会
- Place of Presentation
  豊橋技術科学大学
- Year and Date
  2011-03-10
- Data Source
  KAKENHI-PROJECT-22520576
[Presentation] 英語プレゼンテーション学習支援基盤としてのタスクオントロジー構築2011
- Author(s)
  橋本喜代太, 竹内和広
- Organizer
  教育システム情報学会
- Place of Presentation
  広島市立大学
- Year and Date
  2011-09-01
- Data Source
  KAKENHI-PROJECT-22520576
[Presentation] Learner Support System and AI2011
- Author(s)
  Kiyota Hashimoto
- Organizer
  IIAI-ISAI 2011
- Place of Presentation
  山形(招待講演)
- Year and Date
  2011-08-09
- Data Source
  KAKENHI-PROJECT-22520576
[Presentation] Multi-Layered Learner Knowledge Model for Evaluative Multi-Agent Simulation2011
- Author(s)
  Kiyota Hashimoto, Kazuhiro Takeuchi
- Organizer
  3^<rd> iCAST
- Place of Presentation
  中国(大連)
- Year and Date
  2011-09-28
- Data Source
  KAKENHI-PROJECT-22520576
[Presentation] 大学における英語プレゼンテーション教育のICT支援の要求分析2011
- Author(s)
  橋本喜代太, 竹内和弘
- Organizer
  電子情報通信学会教育工学研究会
- Place of Presentation
  大阪府立大学
- Year and Date
  2011-05-13
- Data Source
  KAKENHI-PROJECT-22520576
[Presentation] マルチメディア学習者英語プレゼンテーションコーパスの構造2011
- Author(s)
  橋本喜代太,竹内和広
- Organizer
  言語処理学会第17回年次大会
- Place of Presentation
  豊橋技術科学大学
- Year and Date
  2011-03-10
- Data Source
  KAKENHI-PROJECT-22520576
[Presentation] プレゼンテーションから始めるパラグラフ構成教育2011
- Author(s)
  橋本喜代太
- Organizer
  日本リメディアル教育学会第8回全国大会
- Place of Presentation
  立命館大学
- Year and Date
  2011-09-02
- Data Source
  KAKENHI-PROJECT-22520576
[Presentation] Multimedia Learner Corpus of Foreigner's Basic Presentation in English with Evaluations2010
- Author(s)
  Kiyota Hashimoto, Kazuhiro Takeuchi
- Organizer
  International Conference on Educational and Information Technology
- Place of Presentation
  重慶(中華人民共和国)
- Year and Date
  2010-09-16
- Data Source
  KAKENHI-PROJECT-22520576
[Presentation] Multimedia Learner Corpus of Foreigner's Basic Presentation in English with Evaluations2010
- Author(s)
  Kiyota Hashimoto, Kazuhiro Takeuchi
- Organizer
  International Conference on Educational and Information Technology
- Place of Presentation
  中国・重慶
- Year and Date
  2010-09-22
- Data Source
  KAKENHI-PROJECT-22520576
[Presentation] 教育内容と習得内容のギャップとりメディアル教育ー英分法項目別習得度アンケート調査結果の分析から2010
- Author(s)
  橋本喜代太
- Organizer
  日本リメディアル教育学会第6回全国大会
- Place of Presentation
  湘南工科大学
- Year and Date
  2010-08-30
- Data Source
  KAKENHI-PROJECT-22520576
[Presentation] Gaps between what students have learned and what they think they have learned: From a survey on English grammar of Japanese university students2010
- Author(s)
  Kiyota Hashimoto
- Organizer
  The 2nd Asian Conference on Education
- Place of Presentation
  大阪
- Year and Date
  2010-12-05
- Data Source
  KAKENHI-PROJECT-22520576
[Presentation] 英語プレゼンテーションの総合評価値からの部分別評価値推定2010
- Author(s)
  橋本喜代太,竹内和広
- Organizer
  第35回教育システム情報学会全国大会
- Place of Presentation
  北海道大学
- Year and Date
  2010-08-26
- Data Source
  KAKENHI-PROJECT-22520576
[Presentation] Prototypical Development of Awareness Promoting Learning Support System of Basic Presentation2010
- Author(s)
  Kiyota Hashimoto, Kazuhiro Takeuchi
- Organizer
  The 2nd International Symposium on Aware Computing
- Place of Presentation
  国立成功大学(中華民国)
- Year and Date
  2010-11-04
- Data Source
  KAKENHI-PROJECT-22520576
[Presentation] Prototypical Development of Awareness Promoting Learning Support System of Basic Presentation2010
- Author(s)
  Kiyota Hashimoto, Kazuhiro Takeuchi
- Organizer
  The 2nd International Symposium on Aware Computing
- Place of Presentation
  台湾・国立成功大学
- Year and Date
  2010-11-04
- Data Source
  KAKENHI-PROJECT-22520576
[Presentation] 英語プレゼンテーションの評価尺度の提案と検証2010
- Author(s)
  橋本喜代太,竹内和広
- Organizer
  第44回電気学会情報システム研究会
- Place of Presentation
  長岡技術科学大学
- Year and Date
  2010-10-01
- Data Source
  KAKENHI-PROJECT-22520576
[Presentation] 教育内容と習得内容のギャップとリメディアル教育-英文法項目別習得度アンケート調査結果の分析から2010
- Author(s)
  橋本喜代太
- Organizer
  日本リメディアル教育学会第6回全国大会
- Place of Presentation
  湘南工科大学
- Year and Date
  2010-08-30
- Data Source
  KAKENHI-PROJECT-22520576
[Presentation] Rhetorical Structure Ontology for Representing Learner's Presentations with Potential Textual Inconsistencies and Imperfections2010
- Author(s)
  Kiyota Hashimoto, Kazuhiro Takeuchi
- Organizer
  International Conference on Innovative Computing, Information, and Control 2010
- Place of Presentation
  西安(中華人民居和国)
- Year and Date
  2010-12-22
- Data Source
  KAKENHI-PROJECT-22520576
[Presentation] 文書スタイル再考――見栄えと意図
- Author(s)
  橋本喜代太
- Organizer
  電気学会/情報システム研究会
- Place of Presentation
  機械振興会館地下３階２号室
- Data Source
  KAKENHI-PROJECT-23650045
[Presentation] プレゼンテーションから始めるパラグラフ構成教育
- Author(s)
  橋本喜代太
- Organizer
  日本リメディアル教育学会第８回全国大会
- Place of Presentation
  立命館大学
- Data Source
  KAKENHI-PROJECT-22520576

1. MATSUMOTO Yuji (10211575)

# of Collaborated Projects: 2 results

# of Collaborated Products: 0 results
2. INUI Kentaro (60272689)

# of Collaborated Projects: 2 results

# of Collaborated Products: 0 results
3. ASAHARA Masayuki (80379528)

# of Collaborated Projects: 2 results

# of Collaborated Products: 0 results
4. TAKEUCHI Kazuhiro (20440951)

# of Collaborated Projects: 1 results

# of Collaborated Products: 34 results
5. TAKEMURA Tomoko (60323896)

# of Collaborated Projects: 1 results

# of Collaborated Products: 1 results
6. TONO Yukio (10211393)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
7. OHTANI Akira (50283817)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results

Hashimoto Kiyota 橋本 喜代太

HASHIMOTO Kiyota 橋本 喜代太

Research Projects

Research Products

Co-Researchers

Foundational study in extracting, measuring and searching presentation styles and their patterns in digital documents

Principal Investigator

Project Period (FY)

Research Category

Research Field

Research Institution

Learner Analysis and Development of Educational Methods and Materials for Presentation in EnglishPrincipal Investigator

Principal Investigator

Project Period (FY)

Research Category

Research Field

Research Institution

Research and Development of Multi-lingual Lexical Analysis System based on Word Construction

Principal Investigator

Project Period (FY)

Research Category

Research Field

Research Institution

Studies on Corpus Creation and Use for Linguistic Research

Principal Investigator

Project Period (FY)

Research Category

Research Field

Research Institution

実例・学習者両コーパスを利用した科学系英文論文の複数文間の連携に関する研究Principal Investigator

Principal Investigator

Project Period (FY)

Research Category

Research Field

Research Institution

[Book] Prototypical Design of Learner Support Materials Based on the Analysis of Non-verbal Elements in Presentation, Watanabe, T.; Watada, J.; Takahashi, N.; Howlett, R.J.; Jain, L.C. (eds.) Intelligent Interactive Multimedia: Systems and Services (Smart Innova2012

Author(s)

Publisher

Data Source

[Journal Article] Prototypical Design of Learner Support Materials based on the Analysis of Non-verbal Elements in Presentation2012

Author(s)

Journal Title

Data Source

[Journal Article] Rhetorical Structure Ontology for Representing Learner's Presentations with Potential Textual Inconsistencies and Imperfections2011

Author(s)

Journal Title

Data Source

[Journal Article] Rhetorical Structure Ontology for Representing Learner's Presentations with Potential Textual Inconsistencies and Imperfections2011

Author(s)

Journal Title

Data Source

[Journal Article] Agent Simulation for Contents Evaluation with User Models for Hierarchical Knowledge Relations2011

Author(s)

Journal Title

Data Source

[Journal Article] A Task Ontology Construction for Presentation Skills2011

Author(s)

Journal Title

Data Source

[Journal Article] 英語プレゼンテーション学習支援基盤としてのタスクオントロジー構築2011

Author(s)

Journal Title

Data Source

[Journal Article] 学生の習得度意識と向上率の逆相関(英文法項目別習得度アンケート調査結果と複数時期の英作文答案の比較から)2011

Author(s)

Journal Title

Data Source

[Journal Article] Multi-Layered Learner Knowledge Model for Evaluative Multi-Agent Simulation2011

Author(s)

Journal Title

Data Source

[Journal Article] 大学における英語プレゼンテーション教育のICT支援の要求分析2011

Author(s)

Journal Title

NAID

Data Source

[Journal Article] A Corpora-Based Detection of Stylistic Inconsistencies of Text in the Targeted Subgenre2010

Author(s)

Journal Title

Data Source

Hashimoto Kiyota 橋本喜代太

HASHIMOTO Kiyota 橋本喜代太