Zhang Yousheng, Ph.D. in computer application technology, postdoctoral fellow in management science and engineering (not leaving the station), national senior programmer, system analyst, and master tutor of computer software and theory, computer application and software engineering. Chief consultant of Greek Consulting Group, senior member of China Computer Federation, evaluation expert of innovation fund for small and medium-sized science and technology enterprises of Ministry of Science and Technology, information security technical expert of Ministry of Public Security, and technical consultant of Electronic Industry Press. Member of Hunan Master's (Excellent) Thesis Evaluation Expert Group, expert of public security informatization of Hunan Provincial Public Security Department. Editor-in-chief of the designated course series of the National Computer Technology Qualification Examination (soft examination), and the person in charge of formulating the examination outline for senior qualifications (system analyst, system architect and information system project management division) since July 2002. Zhang Yousheng is an active advocate and practitioner of China's software engineering thought and a banner of China's software engineering. He has nearly 20 years of experience in software project research and development and management, presided over the development of more than 10 large and medium-sized information system projects, and participated in dozens of projects, involving government affairs, transportation, tourism, health, insurance, hydropower, education, public security, industry and commerce, internet and so on.