Information and Systems, Special Section on Information and Communication System Security
2010
編號 姓名 擔任職務 會議名稱 年份 1洪西進 General Chair IEEE Int. Conf. on Symposium on Parallel and Distributed Processing
with Applications (ISPA10)
2010
2洪西進 General Chair International Conference on Algorithms and Architectures for Parallel Processing
2009
3洪西進 General Chair IEEE 14th Pacific Rim International Symposium on Dependable Computing
2008
4林嘉文 Technical Program Committee Chair
IEEE Conference on Multimedia & Expo (ICME), Singapore 2010
5林嘉文 Publicity Chair International Conference on Visual Communication and Image Representation (VCIP), Taiwan, Taiwan
2011 6 林嘉文 Special Session Chair IEEE Conference on Multimedia & Expo (ICME), New York, USA 2009 7 劉長遠 Invited Speaker Workshop on Intelligent Science and Intelligent Data Engineering 2010 8 Chun-Fa Chang Program Committee ACM SIGGRAPH Symposium on Interactive 3D Graphics and Games 2007-2011
9 Chun-Fa Chang Program Committee Pacific Graphics 2006-2008,2011
10R.S. Chang (張瑞雄) Conference chair 2010 E-Learning Forum Asia 2010 International Conference on Grid and Pervasive Computing
2010
11R.S. Chang (張瑞雄) Conference general-co-chairs
The 2010 International Conference on Advanced Science and Technology
2010
12 R.S. Chang (張瑞雄) 籌備委員 TANET 2009, 2010 20,092,010
13R.S. Chang (張瑞雄) Conference Advisory Board Member
2009 International Conference on New Generation Wireless Systems 2009
14祁忠勇 Track Chair MIMO, Signal Processing, and Smart in Antennas, 2011 IEEE Radio and Wireless Symposium in Radio and Wireless Week (RWW) 2011
2011
15祁忠勇 Lead Co-Chair Signal Processing for Communications (SPC) Symposium, ChinaCOM 2009
2009
16 祁忠勇 Co-Chair SPC Symposium, ChinaCOM 2008 2008
17 Wei-Yang Lin Technical Program CommitteIEEE International Conference on Multimedia & Expo 2010 18 蔣遐齡 Executive Committee IEEE International Carnahan Conference on Security & Technologies 2008~2010
19 林矩民 審稿委員 第31屆中華民國電力研討會
20俞征武 founder International Workshop on Performance Evaluation of Wireless Networks (PEWiN)
21俞征武 founder International Workshop on Wireless Network Algorithms and Theory (WiNA)
2008~2010
22Ruey-Feng Chang (張瑞峰)
Session Chair Computer Assisted Radiology and Surgery (CARS 2007), Berlin, Germany
2007
23Ruey-Feng Chang (張瑞峰)
Session Chair Special Session on Breast CAD, Computer Assisted Radiology and Surgery (CARS 2008), Barcelona, Spain
2008
24Ruey-Feng Chang (張瑞峰)
Program Chair International Forum on Medical Imaging in Asia (IFMIA) 2009, Taiwan
2009
25Ruey-Feng Chang (張瑞峰)
Session Chair Computer Assisted Radiology and Surgery (CARS 2009), Berlin, Germany
2009
26Ruey-Feng Chang (張瑞峰)
Session Chair Computer Assisted Radiology and Surgery (CARS 2010), Geneva, Switzerland
2010
27Ruey-Feng Chang (張瑞峰)
Program Chair International Forum on Medical Imaging in Asia (IFMIA) 2011, Okinawa, Japan
2011
28Sheng-Tang Wu (吳勝堂)
Co-organizer 2010 International Workshop on Web Personalization and
Recommender Systems (WebPRES 2010 Joint With WI–IAT 2010) 2010
29Shyu, S. J. Committee Member The 27th Workshop on Combinatorial Mathematics and Computation Theory
2010
30Shyu, S. J. Committee Member The 26th Workshop on Combinatorial Mathematics and Computation Theory
2009
31Shyu, S. J. Committee Member The 25th Workshop on Combinatorial Mathematics and Computation Theory
2008 32 Ying-Dar Lin Program Committee IEEE ICC (International Conference on Communications) 2011 33Ying-Dar Lin Program Committee
Member
IEEE ICCCN (International Conference on Computer Communications and Networks
2007
34I-Chen Wu Conference Chair The 2010 Conference on Technologies and Applications of Artificial Intelligence (TAAI 2010).
2010 35 I-Chen Wu Chair The Congress of TAAI Computer Game Tournaments, 2010. 2010 36I-Chen Wu Chair The World Computer Chinese Chess Championship (2010 全球電腦
象棋爭霸賽), 2010.
2010 37 I-Chen Wu Committee Member Committee for Nominations Chess Base Best Publication Award. 2010
編號 姓名 擔任職務 會議名稱 年份 38 I-Chen Wu Invited Speaker Forum of Computer Game 2010, Taipei, Taiwan. 2010 39I-Chen Wu Program Committee the 13th IEEE International Conference on Computational Science and
Engineering (CSE 2010).
2010
40I-Chen Wu Program Committee The International Conference on Parallel and Distributed Computing, Applications and Technologies (PDCAT) 2010.
2010 41 I-Chen Wu Program Committee National Computer Symposium (NCS 2009). 2009 42 I-Chen Wu Invited speaker 2008 Computational Intelligence Forum, Tainan, Taiwan. 2008 43 I-Chen Wu Program Committee the 6th Conference on Computer and Games (CG 2008). 2008 44Shie-Yuan Wang General Co-Chair 2010 3rd IEEE International Symposium on Wireless Vehicular
Communications: IEEE WiVEC 2010 16–17 May 2010, Taipei,
2010
45許慶賢 Steering Committee WiMo 2010, The 2nd International Conference on Wireless & Mobile Network
2010
46許慶賢 Steering Committee IET FC 2010, The 1st IET International Conference on Frontier Computing, Theory, Technologies and Applications
2010
47許慶賢 Steering Committee CPI-09, The First International Symposium on Cyber-Physical Intelligence
2009 48 許慶賢 Steering Committee SH-09, The 4thInternational Symposium on Smart Home 2009 49許慶賢 International Advisory
Committee
IEEECloudCom 2010, The 2nd International Conference on Cloud Computing Technology and Science
2010
50許慶賢 International Advisory Committee
MENS 2010, The Second International Symposium on Multidisciplinary Emerging Networks and Systems
2010
51許慶賢 International Advisory Committee
IEEE APSCC-09, The 4th IEEE Asia-Pacific Services Computing Conference
2009
52許慶賢 International Advisory Committee
SMPE09, Symposium on Security and Multimodality in Pervasive Environments, University of Bradford
2009
53許慶賢 General Chair MTPP-2010, the 2nd Russian-Taiwan Symposium on Methods and Tools of Parallel Programming Multicomputers
2010
54許慶賢 General Chair ISPAN-09, The 10th International Symposium on Pervasive Systems, Algorithms and Networks
2009
55許慶賢 General Chair SecUbiq＇08, the Fourth International Symposium on Security in Ubiquitous Computing (SecUbiq-08)
2008
56
許慶賢 Program Chair SMPE 2011, The 5thInternational Symposium on Security and Multimodality in Pervasive Environments (in conjunction with AINA 2011)
2011
57許慶賢 Program Chair UIC 2011, the 8th International Conference on Ubiquitous Intelligence and Computing
2011 58 許慶賢 Program Chair APSCC'11, The sixth IEEE Asia Pacific Service Computing 2011 59
許慶賢 Program Chair EIDWT-2011, 2nd International Conference on Emerging Intelligent Data and Web Technologies, in conjunction with 14-th International Conference on Network-BasedInformation Systems (NBiS-2011)
2011
60許慶賢 Program Chair IET FC 2010, The 1st IET International Conference on Frontier Computing, Theory, Technologies and Applications
2010
61許慶賢 Program Chair ICA3PP-10, The 10th International Conference on Algorithms and Architectures for Parallel Processing (ICA3PP 2010)
2010
62許慶賢 Program Chair CSE-09, The 12th IEEE International Conference on Computational Science and Engineering (CSE-09)
2009 63 許慶賢 Program Chair APSCC'08, the third IEEE Asia Pacific Service Computing 2008 64許慶賢 Program Chair MUE 2008, International Conference on Multimedia and Ubiquitous
Engineering
2008
65許慶賢 Program Vice Chair ISPAN 2011, The 11th International Symposium on Pervasive Systems, Algorithms and Networks
2011
66許慶賢 Program Vice Chair PDCAT＇10, The 11th International Conference on Parallel and Distributed Computing, Applications and Technologies
2010
67許慶賢 Program Vice Chair FCST 2010, The 2010 International Conference on Frontier of Computer Science and Technology
2010
68許慶賢 Program Vice Chair AINA 2010, The 24th IEEE International Conference on Advanced Information Networking and Application
2010
69許慶賢 Program Vice Chair FutureTech 2010, The 5th International Conference on Future Information Technology
2010
70許慶賢 Program Vice Chair SCOA 2009, IEEE International Conference on Service-Oriented Computing and Applications (SOCA＇09)
2009
71許慶賢 Program Vice Chair CSE-2008, the 9thInternational Conference on Computational Science and Engineering
2008
編號 姓名 擔任職務 會議名稱 年份 72許慶賢 Workshop Chair FCST 2011, The 2011 International Conference on Frontier of
Computer Science and Technology
2011
73許慶賢 Workshop Chair CSE 2011, The 14th IEEE International Conference on Computational Science and Engineering
2011
74許慶賢 Workshop Chair APSCC 2010, The 2010 IEEE Asia-Pacific Services Computing Conference
2010
75許慶賢 Workshop Chair UIC 2010, the 7th International Conference on Ubiquitous Intelligence and Computing
2010
76許慶賢 Workshop Chair GPC-10, The 5th International Conference on Grid and Pervasive Computing
2010
77許慶賢 Workshop Chair UIC 2009, the 6th International Conference on Ubiquitous Intelligence and Computing
2009
78許慶賢 Publicity Chair IEEE CEC 2011, The 13th IEEE Conference on Commerce and Enterprise Computing
2011
79許慶賢 Publicity Chair MUE 2011, The 5th International Conference on Multimedia and Ubiquitous Engineering
2011 80 許慶賢 Publicity Chair ICPP 2011, The 40th International Conference on Parallel Processing 2011 81許慶賢 Publicity Chair PDCAT-11, The 12th International Conference on Parallel and
Distributed Computing, Applications and Technologies
2011 82 許慶賢 Publicity Chair ISM 2010, The IEEE International Symposium on Multimedia 2010 83許慶賢 Publicity Chair CloudCom-09, The 1st International Conference on Cloud Computing
Technology
2009
84許慶賢 Publicity Chair HPCC 2009, The 11th IEEE International Conference on High Performance Computing and Communications
2009
85鄭旭詠 (Hsu-Yung Cheng)
Technical Program Committee Member
IEEE International Conference on Multimedia & Expo (ICME 2010), July 19-23, 2010 Singapore
2010
86
鄭旭詠 (Hsu-Yung Cheng)
Program Committee Member
2010 International Workshop on Intelligent Sensors and Smart Environment (ISSE) in the Fifth International Conference on Broadband, Wireless Computing, Communication and Applications (BWCCA-2010), November 4-6, 2010, Fukuoka Institute of
2010
87鄭旭詠 (Hsu-Yung Cheng)
Program Committee Member
2010 IPPR Conf. on Computer Vision Graphics and Image Processing (CVGIP 2010)
2010
88鄭旭詠 (Hsu-Yung Cheng)
Session Chair 2009 IPPR Conf. on Computer Vision Graphics and Image Processing (CVGIP 2009)
2009
89張志勇 Program Chair International Conference on University Basic Computers Education and e-Learning (iCube 2010)
2010 90 張志勇 Publicity Chair International Conference on Computer Technology 2010 91 張志勇 Track Co-Chair Taiwan Academic Network Conference (TANET 2010) 2010 92張志勇 組織委員會共同主席 Cross-Strait Conference on Information Science and Technology
(CSCIST 2010)
2010 93 張志勇 Workshop Co-Chair Workshop of ACM Mobility Conference (Mobility 2010) 2010 94張志勇 Panelist The 6th Workshop on Wireless, Ad Hoc, and Sensor Networks
(WASN 2010)
2010
95張志勇 Keynote Speaker Cross-Strait Conference on Information Science and Technology (CSCIST 2010)
2010
96張志勇 Panelist The 2009 International Conference on University Basic computers education and eLearning (iCube 2009)
2009
97張志勇 Workshop Co-Chair The 2009 International Workshop on Vehicular Communications, Networks, and Applications
2009
98張志勇 Track Chair (Cloud Computing and Its Applications) of the Taiwan Academic Network Conference 2009
2009 99 張志勇 Workshop Co-Chair, 2009 National Computer Symposium (NCS 2009) 2009 100張志勇 Program Vice Chair The 22nd IEEE International Conference on Advanced Information
Networking and Applications (AINA 2008)
2008
101張志勇 Program Co-Chair The 2008 ACM International Workshop on Sensor, Ad Hoc, and Mesh Networks (SANET 2008)
2008
102張志勇 Program Co-Chair The 2nd IEEE International Workshop on Ad Hoc and Ubiquitous Computing
2008 103 張志勇 Workshop Co-Chair The 2008 Workshop of Peer to Peer, Grid, and Parallel Computing 2008 104張志勇 Program Co-Chair The 2007 Workshop on Wireless, Ad Hoc, and Sensor Networks
(WASN 2007)
2007
105張志勇 Program Co-Chair The 2007 International Conference on Future Generation Communication and Networking
2007
編號 姓名 擔任職務 會議名稱 年份
106 黃仁竑 Program chair I-SPAN 2009
107黃仁竑 Program chair The 10th International Symposium on Pervasive Systems, Algorithms and Networks
108葉瑞峰 Publication Chair 2010 7th International Symposium on Chinese Spoken Language Processing
2010
109何前程 program committee member International Conference on Genetic and Evolutionary Computing (ICGEC)
2010 110 何前程 program committee member International Conference on Information Assurance and Security 2010 111 何前程 program committee member International Conference on Information Assurance and Security 2009 112李冠憬 指導委員 GPC'2011- The 6th International Conference on Grid and Pervasive
Computing, Oulu, Finland, May 2011
2011
113
李冠憬 指導委員 Greencom'2010- The 2010 IEEE/ACM International Conference on Green Computing and Communications,Hanzhou, China, December 2010
2010
114
李冠憬 指導委員 CSE'2010- The 2010 13th IEEE International Conference on Computational Science and Engineering, Hong Kong, China, December 2010
2010
115李冠憬 指導委員 GPC'2010- The 5th International Conference on Grid and Pervasive Computing,Hualien, Taiwan, May 2010
2010
116
李冠憬 指導委員 CSE'2009- The 2009 12th IEEE International Conference on Computational Science and Engineering, Vancouver, Canada, August 2009
2009
117李冠憬 指導委員 GPC'2009- The 4th International Conference on Grid and Pervasive Computing, Geneva, Switzerland, May 2009
2009
118李冠憬 指導委員 CSE'2008- The 2008 11th IEEE International Conference on Computational Science and Engineering, Sao Paulo, Brazil, July 2008
2008
119李冠憬 指導委員 GPC'2008- The 3rd International Conference on Grid and Pervasive Computing, Kunming, China, May 2008
2008
120李冠憬 指導委員 GPC'2007- The 2nd International Conference on Grid and Pervasive Computing, Paris, France, May 2007
2007
121李冠憬 指導委員 GPC'2006- The International Conference on Grid and Pervasive Computing, Taichung, Taiwan, May 2006
2006
122鄭有進 Program Co-Chair The Fourth IEEE International Symposium on Service-Oriented System Engineering (SOSE 2008)
2008
123 郭忠義 議程主席 台灣物件導向技術及應用暨軟體工程研討會 2010
124Yu, Chien-Chih Member of the International Program Committee (IPC)
2007, 2009, 2010 International Conference on Advances in Information Technology (IAIT 2007, IAIT 2009, IAIT 2010)
2007, 2009, 2010 125
Yu, Chien-Chih IPC Member and Chair of the Doctoral Dissertation Competition Committee
2007 International Conference on Electronic Business (ICEB 2007) 2007
126Yu, Chien-Chih International Co-Chair 2008 International Conference for Internet Technology and Secured Transactions (ICITST 2008)
2008
127Yu, Chien-Chih International Advisory Board
2008, 2009 International Congress on Pervasive Computing and Management (ICPCM 2008, ICPCM 2009)
2008, 2009
128Yu, Chien-Chih IPC Member 2009 International Conference on Theory and Practice of Electronic Governance (ICEGOV 2009)
2009
129Yu, Chien-Chih IPC Member 2010, 2011 International IFIP e-Government Conference (IFIP EGOV 2010, IFIP EGOV 2011)
2010, 2011
130Yu, Chien-Chih IPC Member 2010 International Conference on Electronic Government and the Information Systems Perspective (EGOVIS 2010)
2010
131 郭大維 General Chair IEEE Real-Time Systems Symposium 2008
132 郭大維 Program Chair IEEE Real-Time Systems Symposium 2007
133 王榮華 Session Chair 8th IEEE International Conference on Industrial Informatics 2010 134 王榮華 議程委員 23rd IPPR Conference on Computer Vision, Graphics, and Image
P i
2010 135 蔡文祥 主席 Conference on Computer Vision, Graphics, & Image Processing
Conference
2007
136 蔡文祥 共同主席(conference
co-chair)
International Conference on Multimedia Modeling (MMM2011) 2011 137 蔡文祥 主席(general chair) IEEE International Symposium on Multimedia (ISM2010) 2010 138 余遠澤 學術委員 Multimedia Systems and Applications, The 13-th International
Conference on Network Based Information Systems (NBiS 2010)
2010 139 余遠澤 論文審查委員 The 71st IEEE Vehicular Technology Conference (VTC2010-Spring) 2010 2009
編號 姓名 擔任職務 會議名稱 年份 140Shinfeng D. Lin
(林信锋)
Program Chair Grid and Pervasive Computing 2010 2010
141 Yuh-Jye Lee Program Co-Chair 人工智慧國際研討會 2010 TAAI Conference 2010
142 Tsan-Pin Wang Program Committee The First IEEE International Workshop on Wireless Network Algorithms (IEEE WiNA 08) December 9 2008 Yilan Taiwan
2008 143 Tsan-Pin Wang Technical Program
Committee
"Wireless/Sensor Networks and Pervasive Computing" Track, The 40th ICPP (International Conf on Parallel Processing)
2011 144 陳錫明 Program Chair 2007 15th National Conference on Fuzzy Theory and Its Applications 2007
145 陳錫明 Program
Co Chair
2008 Seventh International Conference on Machine Learning and Cybernetics
2008
146 陳錫明 Program
Area Chair
2008 20th IEEE International Conference on Tools with Artificial Intelligence
2008 147 陳錫明 GeneralChair 2008 13th Conference on Artificial Intelligence and
Applications
2008
148 陳錫明 GeneralChair 2008 AI Forum 2008
149 陳錫明 Program Chair 2008 Workshop on Artificial Intelligence, Knowledge Discovery and Fuzzy Systems
2008
150 陳錫明 GeneralChair 2008 Workshop on Consumer Electronics 2008
151 陳錫明 GeneralChair 2008 Computational Intelligence Forum and World 9 x 9 Computer Go Championship
2008
152 陳錫明 Program
Area Chair
2008 IEEE International Conference on Systems, Man, and Cybernetics
2008
153 陳錫明 GeneralChair 2009 AI Forum 2009
154 陳錫明 Program Chair 2009 22th International Conference on Industrial, Engineering & Other Applications of Applied
2009 155 陳錫明 Program Chair 2009 9th International Conference on Hybrid
Intelligent Systems
2009 156 陳錫明 Program Chair 2009 First International Conference on Computational
Collective Intelligence
2009
157 陳錫明 GeneralChair 2009 Workshop on Consumer Electronics 2009
158 陳錫明 Program Chair 2010 Second Asian Conference on Intelligent Information and Database Systems
2010 159 陳錫明 Program Chair 2010 International Conference on Machine Learning
and Cybernetics
2010
160 陳錫明 Program
Area Chair
2010 22th IEEE International Conference on Tools with Artificial Intelligence
2010
161 陳錫明 GeneralChair 2010 Consumer Electronics Forum 2010
162 陳錫明 GeneralChair 2010 Workshop on Consumer Electronics 2010
163 陳錫明 ProgramChair 2010 Second International Conference on Computational Collective Intelligence
2010 164 許弘駿 Session Chair The 10th International Symposium on Pervasive Systems, Algorithms
and Networks
2009 165 許弘駿 Session Chair The 2010 International Symposium on Parallel and Distributed
Processing with Applications
2010 166 Ming-Shen Jian Plenary Lecture the 10th WSEAS International Conference on Systems Theory and
S i ifi C i i
2010 167 Ming-Shen Jian Reviewer World Scientific and Engineering Academy and Society 2008-2010 168 Ming-Shen Jian Reviewer IEEE Communications Society, International Conference on
Advanced Communication Technology
2008-2010 169Yun-Parn Lee ODBC subcommittee IEEE (ICCCAS), 2010 International Conference on Communications,
Circuits and Systems, Chengdu, Ching
2010
170Yun-Parn Lee Chairman IEEE (ICCCAS), 2011 International Conference on Communications, Circuits and Systems, Chengdu, Ching
2010
171 溫嘉榮 審查委員 教育部數位學習認證 2008-現在
172 溫嘉榮 指導委員 教育部99度資訊教育推動成果暨100年資訊教育推動計畫 2010
173Jia Rong Wen Review Committee Internation Conference of Curriculum and Instruction in Technology Education
2003- Now
174黃俊堯 Technical Program Committee
2010 Workshop on Digital Content, Digital Life and Human Computer Interaction, ICS 2010
2010
175 黃俊堯 Program Committee iCube2010 2010
176 黃俊堯 General Co-Chair ACM/IEEE NetGames 2010 2010
177 黃俊堯 Local Organization Co-Chair
ACM ACE2010 2010
178 黃俊堯 Program Committee Computer Graphic Workshop 2010 2010
179 黃俊堯 Program Committee The 3rd International Workshop on Peer-to-Peer Networked Virtual Environments
2009
編號 姓名 擔任職務 會議名稱 年份
180 黃俊堯 Workshop Co-Chair National Computer Symposium 2009 2009
181 黃俊堯 Program Committee The 2nd International Workshop on Peer-to-Peer Networked Virtual Environments
2008
182 沈祖望 座長 生物醫學工程研討會 2009
183 沈祖望 座長 International conference on Service and Interactive Robotics 2009
184 沈祖望 壁報評審委員 生物醫學工程研討會 2007 2007
185 許舜欽 共同主席 2008 World Computer GO Championship 2008
186 許舜欽 共同主席 2008 Forum on Computer Games 2008
187 許舜欽 共同主席 FUZZY-IEEE 2009, Panel, Invited Sessions, and Human vs.
Computer G0 Competition
2009
188 許舜欽 共同主席 2010 World Computer Chinese Chess Championship 2010
189 許舜欽 共同主席 2010 Forum on Theory of Computer Games 2010
190 李健興 大會共同主席 2010臺灣網際網路研討會 (TANET 2010) 2010
191李健興 議程共同主席 The 2010 Conference on Technologies and Applications of Artificial Intelligence (TAAI 2010): Domestic Track
2010
192李健興 International Advisory Board
9th International Conference on Intelligent Systems Design and Applications (ISDA2009), Pisa, Italy
2009
193李健興 議程主席 2011 IEEE International Conference on Fuzzy Systems (FUZZ-IEEE 2011), Taipei, Taiwan
2011
194陳履恆 (Lieu-Hen Chen)
Program Committee The 6th International Conference on Intelligent Environments - IE'10 2010
195陳履恆 (Lieu-Hen Chen)
Program Committee The 2010 International Symposium on Intelligent Systems 2010
196陳履恆 (Lieu-Hen Chen)
Session Co-organizer IEEE 2010 International Symposium on Communications and Information Technologies
2010
197 陳履恆 Program Committee Computer Graphics Workshop 2010 2010
198 陳履恆 Program Committee Computer Graphics Workshop 2009 2009
199 陳履恆 Program Committee Computer Graphics Workshop 2008 2008
200彭勝龍 Keynote the 1st International Computer Science and Engineering Conference 2010, Thailand
2010
201
彭勝龍 Program co-chair the Bioinformatics and Bio-Inspired Computing track of the 5th International Conference on Future Information Technology 2010, Korea
2010
202彭勝龍 Program Committee the 5th International Conference on Grid and Pervasive Computing 2010, Taiwan
2010
203 彭勝龍 Program Committee the eLearning Forum Asia 2010, Taiwan 2010
204彭勝龍 Program Committee 27th Workshop on Combinatorial Mathematics and Computation
204彭勝龍 Program Committee 27th Workshop on Combinatorial Mathematics and Computation