Chinese Journal of Engineering Science 

About: Chinese Journal of Engineering Science is an academic journal published by Chinese Academy of Engineering. The journal publishes majorly in the area(s): China & Computer science. It has an ISSN identifier of 1009-1742. It is also open access. Over the lifetime, 495 publications have been published receiving 1336 citations. The journal is also known as: Engineering Science & Strategic study of CAE.

Analysis on the Amount and Utilization of Manure in Livestock and Poultry Breeding in China

Abstract: Unreasonable discharge of manure from livestock and poultry breeding is a main source of agricultural non-point source pollution in China, but the manure is also a potential resource. How to achieve the best resource utilization of livestock manure and reduce environmental pollution has become a major problem that must be solved in the sustainable development of China’s breeding industry. In this paper, the pollutant discharge coefficient method is used to calculate the amount of manure produced by livestock and poultry breeding in China, and the current situation and problems of its resource utilization are analyzed. The results show that, with the expansion of the scale of livestock and poultry breeding and the increase of intensification, the amount of livestock manure 收稿日期:2018-09-10;修回日期:2018-09-18 通讯作者:武淑霞,中国农业科学院农业资源与农业区划研究所,副研究员,主要研究方向为施肥与环境;E-mail: wushuxia@caas.cn 资助项目:中国工程院咨询项目“中国农业资源环境若干战略问题研究”(2016-ZD-10);农业部专项“农业生态环境保护”;中英牛顿基金 项目 (BB/N013484/1) 本刊网址:www.enginsci.cn DOI 10.15302/J-SSCAE-2018.05.016

Human-Centered Intelligent Manufacturing: Overview and Perspectives

Abstract: Humans are the most dynamic factor in a manufacturing system. Regardless of the advancement level of intelligent manufacturing, it should meet humans’ needs and serve for a better life. Based on the theory of human– cyber–physical systems in the context of intelligent manufacturing, the concept of human-centered intelligent manufacturing (HCIM) is proposed in this study. HCIM is discussed from the aspects of background, connotation, human factors, technical systems, and practical applications. This clarifies that HCIM not only reflects an important perspective, but also represents one of the significant research directions of intelligent manufacturing. On this basis, several suggestions are recommended, from policy decision-making, enterprise development, and scientific research levels, including linking HCIM with relevant national strategies, regarding HCIM as a key concept for enterprises’ development, and enhancing research on human factors/ergonomics in intelligent manufacturing systems. This study could provide a reference to promote the HCIM development and applications in China.

Development Strategy of High Temperature Gas Cooled Reactor in China

Abstract: High temperature gas cooled reactor (HTGR) together with its successor, the very high temperature reactor, is one of the six nuclear energy systems identified and selected by the Generation IV International Forum for further development. The paper briefly summarizes the technical characteristics of HTGR and reviews the recent research and development status of HTGR technology at home and abroad. It also discusses the strategic positioning of HTGR in China and looks ahead to the HTGR technology development road map in China. China has gone through the stages such as tracking, stepping over, and independent innovation in the past years, and now is in the front-runner status with respect to the commercial-level HTGR nuclear power plant. On this basis, China is working on the design of 600 MW pebble bed HTGR (HTR-PM600), so as to further promote industrialization of the HTGR technology and stay ahead in this field.

Low Earth Orbiter (LEO) Navigation Augmentation: Opportunities and Challenges

Abstract: As China’s Beidou satellite navigation system (Beidou system) achieves an initial global coverage, the low earth orbiter navigation augmentation (LEO-NA) technique has become a subject of significant research interest, since it is highly compatible with the Beidou system to improve global autonomous navigation precision and extend the application market of global navigation satellite systems (GNSSs). This study analyzes the demand for and status of the LEO-NA technique and focuses on the in-orbit validation of key techniques for the Luojia-1A satellite. It also studies the challenges faced in the case of the LEO-NA system, including interoperability of signal frequencies after navigation augmentation, integrated design of the communication and navigation signals, control and management of the LEO constellations, acquisition and tracking of the high-dynamic augmented signals, and integration with existing GNSSs. In consideration of the pressing demand for the LEO-NA techniques, the following suggestions are proposed, namely, enhancement of the LEO-NA system top-level design while focusing on the synergy of the LEONA and Beidou systems; promotion of the integration of the communication, navigation, and remote sensing functions; building of the space-based real-time service system in a stepwise and stratified manner; and planning and construction of the satellite project and the ground infrastructure in an integrated manner.