A novel Radio On Fiber(ROF) access is proposed and demonstrated which enables the pico-cell Base Station (BS) for high-speed wireless communications to eliminate external electric power supply facilities. We demonstra...A novel Radio On Fiber(ROF) access is proposed and demonstrated which enables the pico-cell Base Station (BS) for high-speed wireless communications to eliminate external electric power supply facilities. We demonstrated 2.4-GHz band radio signal transmission through the BS without external electric power supply. The electrical power used for BS circuit is feeded by optical power over optical fiber from central station.展开更多
CONSPECTUS:Thermoresponsive hydrogels possess an inherent capacity for autonomous adjustment of their properties in response to temperature variations,eliminating the requirement for external power sources and renderi...CONSPECTUS:Thermoresponsive hydrogels possess an inherent capacity for autonomous adjustment of their properties in response to temperature variations,eliminating the requirement for external power sources and rendering them suitable for diverse environmental applications.Our discourse commences by establishing a foundational comprehension of the two principal categories governing thermal transitions in thermoresponsive hydrogels,namely,the Lower Critical Solution Temperature(LCST)and the Upper Critical Solution Temperature(UCST).展开更多
How has China responded to regional tensions and conflicts in the Middle East?Broadly,it has done so in the form of a threelevel game,at the global level(involving powerful outside parties like the US,Russia and the E...How has China responded to regional tensions and conflicts in the Middle East?Broadly,it has done so in the form of a threelevel game,at the global level(involving powerful outside parties like the US,Russia and the Europeans),at the regional level(and specifically the main regional powers like Saudi Arabia,Iran,Israel and Turkey)and at the sub-regional level where smaller and weaker states are based.The existence of this multipolar and competitive environment in which no one state or group of states is sufficiently capable to overcome another means that China’s relations with the region involve a range of sometimes contrary responses,including cooperation with these states while avoiding being caught up in their differences.This strategy may be summarised as‘strategic ambiguity’or‘hedging’and while it has served China well,it may be reaching the endpoint of its current utility.展开更多
文摘A novel Radio On Fiber(ROF) access is proposed and demonstrated which enables the pico-cell Base Station (BS) for high-speed wireless communications to eliminate external electric power supply facilities. We demonstrated 2.4-GHz band radio signal transmission through the BS without external electric power supply. The electrical power used for BS circuit is feeded by optical power over optical fiber from central station.
基金funding support from the Global STEM Professorship Scheme sponsored by the Government of Hong Kong Special Administrative RegionStart-up funding from The Chinese University of Hong Kong.
文摘CONSPECTUS:Thermoresponsive hydrogels possess an inherent capacity for autonomous adjustment of their properties in response to temperature variations,eliminating the requirement for external power sources and rendering them suitable for diverse environmental applications.Our discourse commences by establishing a foundational comprehension of the two principal categories governing thermal transitions in thermoresponsive hydrogels,namely,the Lower Critical Solution Temperature(LCST)and the Upper Critical Solution Temperature(UCST).
文摘How has China responded to regional tensions and conflicts in the Middle East?Broadly,it has done so in the form of a threelevel game,at the global level(involving powerful outside parties like the US,Russia and the Europeans),at the regional level(and specifically the main regional powers like Saudi Arabia,Iran,Israel and Turkey)and at the sub-regional level where smaller and weaker states are based.The existence of this multipolar and competitive environment in which no one state or group of states is sufficiently capable to overcome another means that China’s relations with the region involve a range of sometimes contrary responses,including cooperation with these states while avoiding being caught up in their differences.This strategy may be summarised as‘strategic ambiguity’or‘hedging’and while it has served China well,it may be reaching the endpoint of its current utility.
