为了解决高速电力载波(high power line communication,HPLC)网络的采集业务效率不同的问题,本文对基于正交频分复用(orthogonal frequency division multiplexing,OFDM)技术的高速电缆线载波通信技术已经大规模应用于用电信息采集系统...为了解决高速电力载波(high power line communication,HPLC)网络的采集业务效率不同的问题,本文对基于正交频分复用(orthogonal frequency division multiplexing,OFDM)技术的高速电缆线载波通信技术已经大规模应用于用电信息采集系统进行研究,提出了一种新的有电信控网关,阐述有电信控网关的实施技术,并对有电信控网关系统的通信拥堵控制机制进行分析。有电信控网关解决了现有HPLC技术控制通信的双向通信中只能单向发送指令的信号冲突问题,以期为相关人员提供参考。展开更多
There seems to be a renewed interest in the last couple decades in studying and writing about consciousness. Consciousness may be the most difficult question humans are trying to resolve. Yet eliciting transcendence, ...There seems to be a renewed interest in the last couple decades in studying and writing about consciousness. Consciousness may be the most difficult question humans are trying to resolve. Yet eliciting transcendence, a phenomenon that rises above, or goes beyond, normal limits of consciousness, has been an identified goal for many artists in the past, possibly even in cave art. Drawing on works shown in the 2006 Art Gallery of Hamilton exposition called Sublime Embrace： Experiencing Consciousness in Contemporary Art and in the 2002 Houston Contemporary Art Museum 2002 show called THE INWARD EYE： Transcendence in Contemporary Art, the author will explore the biological, psychological, cultural, and spiritual facets of transcendence. Perhaps, with the renewed symbiotic relationship between the sciences and art, the convergence of digital media, and the emergence of global communication networks, we are at the verge of art that will create a change, an alteration in our consciousness, and an altercendent state. What this change will be is yet a mystery.展开更多
A tunable thermo-optic intensity-modulated switch is investigated theoretically and numerically. It is based on the infiltration of temperature-sensitive mixture liquids into index-guiding photonic crystal fibers （P...A tunable thermo-optic intensity-modulated switch is investigated theoretically and numerically. It is based on the infiltration of temperature-sensitive mixture liquids into index-guiding photonic crystal fibers （PCFs）. The switching function attributes to the thermo-optic effect of the effective refractive index of the cladding. The simulation illustrates that the switch presents a tunable transition point according to the concentration of the mixture liquids, and the on-off switching functionality can be realized within a narrow temperature range of 2 ℃. The switches have wide application for innovative all-in-fiber optical communication and logic devices.展开更多
文摘为了解决高速电力载波(high power line communication,HPLC)网络的采集业务效率不同的问题,本文对基于正交频分复用(orthogonal frequency division multiplexing,OFDM)技术的高速电缆线载波通信技术已经大规模应用于用电信息采集系统进行研究,提出了一种新的有电信控网关,阐述有电信控网关的实施技术,并对有电信控网关系统的通信拥堵控制机制进行分析。有电信控网关解决了现有HPLC技术控制通信的双向通信中只能单向发送指令的信号冲突问题,以期为相关人员提供参考。
文摘There seems to be a renewed interest in the last couple decades in studying and writing about consciousness. Consciousness may be the most difficult question humans are trying to resolve. Yet eliciting transcendence, a phenomenon that rises above, or goes beyond, normal limits of consciousness, has been an identified goal for many artists in the past, possibly even in cave art. Drawing on works shown in the 2006 Art Gallery of Hamilton exposition called Sublime Embrace： Experiencing Consciousness in Contemporary Art and in the 2002 Houston Contemporary Art Museum 2002 show called THE INWARD EYE： Transcendence in Contemporary Art, the author will explore the biological, psychological, cultural, and spiritual facets of transcendence. Perhaps, with the renewed symbiotic relationship between the sciences and art, the convergence of digital media, and the emergence of global communication networks, we are at the verge of art that will create a change, an alteration in our consciousness, and an altercendent state. What this change will be is yet a mystery.
基金supported by the National Key Basic Research and Development Program of China(No.2010CB327801)
文摘A tunable thermo-optic intensity-modulated switch is investigated theoretically and numerically. It is based on the infiltration of temperature-sensitive mixture liquids into index-guiding photonic crystal fibers （PCFs）. The switching function attributes to the thermo-optic effect of the effective refractive index of the cladding. The simulation illustrates that the switch presents a tunable transition point according to the concentration of the mixture liquids, and the on-off switching functionality can be realized within a narrow temperature range of 2 ℃. The switches have wide application for innovative all-in-fiber optical communication and logic devices.
