*The 4th International Workshop on Workflow Management in Service and Cloud Computing (WMSC2012)* *1-3 November 2012, Xiangtan, China* http://kpnm.hnust.cn/confs/wmsc2012 *in conjunction with the* International Conference on Cloud and Green Computing (CGC2012<http://kpnm.hnust.cn/confs/cgc2012/> ) Supported by IEEE TCSC Technical Area on Workflow Management in Scalable Computing Environments As emerging paradigms, service and cloud computing enable resource to be employed in utility-based fashion. Workflow automating business and scientific processing in step by step can be executed in service and cloud computing environments in the benefit of deploying resources for execution in that fashion. This workshop following its successful edition of WMSC2011<http://kpnm.hnust.cn/confs/wmsc2011/>aims to provide a forum for researchers, practitioners and developers from different background areas such as service computing, cloud computing and workflow area to exchange the latest experience, research ideas and synergic research and development on fundamental issues and applications about workflow management in service and cloud computing environments. The workshop solicits high quality research results in all related areas. *Topics* The objective of the workshop is to invite authors to submit original manuscripts that demonstrate and explore current advances in all aspects of workflow management in service and cloud computing environments. The workshop solicits novel papers on a broad range of topics, including but not limited to: · Service based workflow modelling · Service Delivery and Composition · Service Level Agreements (SLAs) Negotiation, Automation and Orchestration · Quality of Services for workflow execution · Workflow verification and validation · Services Repository and Registry · Service Security, Privacy and Trust for workflow modelling and execution · Novel architectural models for cloud computing in support of workflow execution · Cloud workflow architecture · Cloud resource management · Scientific computing in the cloud · Programming models for cloud computing · Access control and authorisation for workflow execution · Workflow scheduling in cloud computing · Utility models and service pricing · Service enabled workflow applications · Privacy, security, risk and trust issues in cloud computing · Social issues in cloud computing · Green cloud computing · Green ICT and smart metering · Cloud workflow applications *Submission Requirements* Please submit your paper(s) in PDF file at the WMSC2012 submission site: https://www.easychair.org/conferences/?conf=wmsc2012. Papers should be limited up to 8 pages in IEEE format<http://www.computer.org/portal/pages/cscps/cps/cps_forms.html>. All papers will be peer reviewed by two or three pc members. Submitting a paper to the workshop means that if the paper is accepted, at least one author should register to CGC2012 <http://kpnm.hnust.cn/confs/cgc2012/> and attend the conference to present the paper. *Publication of Papers* All accepted papers will appear in the proceedings published by IEEE Computer Society (EI indexed). Selected papers will be invited to special issues of CGC2012 in Concurrency and Computation: Practice and Experience; Future Generation Computer Systems; and International Journal of High Performance Computer Applications. *Important Dates* Deadline for Paper Submission: June 25 , 2012 Notification of Acceptance: July 30, 2012 Camera Ready Copies: August 10, 2012 *Program Committee Co-Chairs:* Jianxun Liu, Hunan University of Science and Technology, China Jinjun Chen, Swinburne University of Technology, Austria Rajkumar Buyya, The University of Melbourne, Austria *Organization Co-Chairs:* Xitong Li, Massachusetts Institute of Technology, USA Yiping Wen, Hunan University of Science and Technology, China *Program Committee: * Danilo Ardagna, Politecnico di Milano, Italy Christoph Bussler, Xtime, Inc., USA Jian Cao, Shanghai Jiaotong University, China Massimo Cafaro, University of Salento, Italy Wanchun Dou, Nanjing University , China Schahram Dustdar, Vienna University of Technology, Austria Yushun Fan, Tsinghua University, China Joerg Haehner, University of Hannover, Germany Ken Hawick, Massey University, New Zealand Robert C. H. Hsu, Chung Hua University, Taiwan Michel Hurfin, INRIA, France Qing Li, City University of Hong Kong, China Shiyong Lu, Wayne State University, USA Zongwei Luo, The University of Hong Kong, China Dan C. Marinescu, University of Central Florida, USA Jose A. Montenegro, Universidad de Malaga, Spain Helen Paik, University of New South Wales, China Sabri Pllana, University of Vienna, Austria Radu Prodan, University of Innsbruck, Austria Michael Sheng, University of Adelaide, China Wei Tan, IBM Waston Research Center, USA Jiacun Wang, Monmouth University, USA Jianwu Wang, San Diego Supercomputer Center, USA Martijn Warnier, Delft University of Technology, Netherlands Lai Xu, Bournemouth University, UK Yang Yu, Yat-sen University, China Haksung Kim, Dongnam Health University, South Korea Gregor V. Bochmann, University of Ottawa, Canada Lijie Wen, Tsinghua University, China