Rapid Prototyping Journal《快速样机成型》（一年11期）. Rapid Prototyping Journal concentrates on development in a manufacturing environment but covers applications in other areas, such as medicine and construction. All papers published in this field are scattered over a wide range of international publications, none of which actually specializes in this particular discipline, this journal is a vital resource for anyone involved in additive manufacturing. It draws together important refereed papers on all aspects of AM from distinguished sources all over the world, to give a truly international perspective on this dynamic and exciting area.

Rapid Communications in Mass Spectrometry《质谱学快报》（半月刊）. Rapid Communications in Mass Spectrometry is a journal whose aim is the rapid publication of original research results and ideas on all aspects of the science of gas-phase ions; it covers all the associated scientific disciplines. There is no formal limit on paper length (“rapid” is not synonymous with “brief”), but papers should be of a length that is commensurate with the importance and complexity of the results being reported. Contributions may be theoretical or practical in nature; they may deal with methods, techniques and applications, or with the interpretation of results; they may cover any area in science that depends directly on measurements made upon gaseous ions or that is associated with such measurements.

The Rangeland Journal《牧场期刊》（双月刊）. The Rangeland Journal publishes original work that makes a significant contribution to understanding the biophysical, social, cultural, economic, and policy influences affecting rangeland use and management throughout the world. Rangelands are defined broadly and include all those environments where natural ecological processes predominate, and where values and benefits are based primarily on natural resources.

Rangeland Ecology & Management《牧场生态与管理》（双月刊）. Rangeland Ecology & Management publishes all topics-including ecology, management, socioeconomic and policy-pertaining to global rangelands. The journals mission is to inform academics, ecosystem managers and policy makers of science-based information to promote sound rangeland stewardship. Author submissions are published in five manuscript categories: original research papers, high-profile forum topics, concept syntheses, as well as research and technical notes.

Range Management and Agroforestry《牧场管理与复合农林业》（半年刊）. Range Management and Agroforestry Journal is endeavouring to promote and disseminate the knowledge of scientific agriculture and technology for forage and rangeland production, improvement and management. The Journal encourages research papers and articles on rangelands, forages, wasteland ecosystems and agroforestry for academicians/researchers and other stakeholders including farmers. Being an unique journal, it also aims to provide a forum for discussion and deliberate on current issues of rangeland and fodder production, environment and livestock production.

Random Structures & Algorithms《随机结构与算法》（一年8期）. It is the aim of this journal to meet two main objectives: to cover the latest research on discrete random structures, and to present applications of such research to problems in combinatorics and computer science. The goal is to provide a natural home for a significant body of current research, and a useful forum for ideas on future studies in randomness.

Random Matrices-Theory and Applications《随机矩阵：理论与应用》（季刊）. Random Matrix Theory (RMT) has a long and rich history and has, especially in recent years, shown to have important applications in many diverse areas of mathematics, science, and engineering. The scope of RMT and its applications include the areas of classical analysis, probability theory, statistical analysis of big data, as well as connections to graph theory, number theory, representation theory, and many areas of mathematical physics.

The Ramanujan Journal《拉马努金杂志》（月刊）. The Ramanujan Journal publishes original papers of the highest quality in all areas of mathematics influenced by Srinivasa Ramanujan. His remarkable discoveries have made a great impact on several branches of mathematics, revealing deep and fundamental connections.

RAIRO-Theoretical Informatics and Applications《理论信息学与应用》（一年1卷）. RAIRO: ITA is a section of RAIRO, Revue dAutomatique, dInformatique et de Recherche Opérationnelle. RAIRO is an international journal devoted to high-level pure and applied research on the use of scientific methods and information processing in business and industry.

RAIRO-Operations Research《运筹学》（双月刊）. RAIRO-Operations Research is an international journal devoted to high-level pure and applied research on all aspects of operations research. All papers published in RAIRO-Operations Research are critically refereed according to international standards. Any paper will either be accepted (possibly with minor revisions) either submitted to another evaluation (after a major revision) or rejected. Every effort will be made by the Editorial Board to ensure a first answer concerning a submitted paper within three months, and a final decision in a period of time not exceeding six months.