MIMO Channel Characteristics in Line-of-Sight Environments

Non

Experimental research on robot control

This project is about experimental research on robotic control and consists of the following three parts: robot experimental system set-up; system modeling and parameter identification; and control algorithm implementations.Master of Engineerin

Surface Tension of R290/Lubricant Oil Mixtures from 243 to 333 K

Propane (R290) is a promising natural refrigerant with zero ODP and very low GWP. The surface tension of a refrigerant/oil mixture is of importance for its capillary flow rate, wettability, and heat transfer performance. In this study, the surface tension of R290 with three commercial lubricants 3GS, RL68H, and AB4 was measured in the temperature range from 243 to 333 K by the differential capillary rise method. The expanded uncertainty of the surface tension data was less than 0.32 mN m–1 (k = 2). The obtained surface tensions were correlated as a function of temperature and composition, and the average absolute deviations between the experimental and calculated results were 0.03 mN m–1 for R290/3GS, 0.06 mN m–1 for R290/RL68H, and 0.09 mN m–1 for R290/AB4 mixtures

THE CHINESE PRACTICE‐ORIENTED VIEWS OF SCIENCE AND THEIR POLITICAL GROUNDS

In China, practice-oriented views of science can be traced back to antiquity. In ancient times, the Chinese people independently created and developed application-oriented sciences, but they ignored basic science. In modern times, China learned and introduced Western science and technology as a practical instrument to protect the nation and make it prosperous and powerful. Through technology and production, science has been playing an immediate and major role in the development of socialism since 1949. Since 1978, the Chinese government has always emphasized that science and technology are the primary productive forces. From ancient times to the present, the practice-oriented views of science are grounded in politics. Science has been the handmaiden of politics since the Qin Dynasty. However, this state of affairs hinders the development of basic science, a science that is not oriented toward immediate application. It also hinders open-minded, critical reflection on the downsides or limits of science, which could draw on broader (moral, spiritual, or religious) values