By analyzing different expressions of "white space" in classical and modern Chinese gardens, the authors proposed that "white space" theory has infiltrated in graphic and spatial designs and has be...By analyzing different expressions of "white space" in classical and modern Chinese gardens, the authors proposed that "white space" theory has infiltrated in graphic and spatial designs and has been widely applied in spatial layouts of gardens. On the basis of elaborating conceptual origin, characteristics and its connotations in the creation of artistic ambience, "white space" was believed valuable and enlightening for the artistic creation of modern landscape architecture.展开更多
Exploration of TV white space(TVWS)is a promising solution to mitigate the spectrum shortage and provide opportunities for new applications.In this paper,we present a detailed analysis of spectrum utilisation over TVW...Exploration of TV white space(TVWS)is a promising solution to mitigate the spectrum shortage and provide opportunities for new applications.In this paper,we present a detailed analysis of spectrum utilisation over TVWS at different locations in London.Both short-term and long-term outdoor measurement campaigns are conducted over large scales to better understand the spectrum features and variations across multiple locations and time periods.Different from most fixed-location-only measurements,we also drive along the main streets of London with a portable moving node to measure the on-route spectrum density along with the corresponding geographical information,which allows us to study the features and variations of spectrum use through a continuous space.To better analyse the dynamic spectrum utilisation,a machine learning based analysis algorithm is developed over the real-world measurements.This approach allows us to characterise the similarity and variability in spectrum usage within and among different channels,locations,and time instances,which is critical for the secondary system deployment to efficiently exploit the white space.展开更多
The Information Office of the State Council published a white paper on China’s space activities in 2016 on December27,2016,setting out China’s vision as a space power for the first time.'China’s Space Activitie...The Information Office of the State Council published a white paper on China’s space activities in 2016 on December27,2016,setting out China’s vision as a space power for the first time.'China’s Space Activities in 2016'is the fourth white paper on China’s space activities issued by the State Council Information Office.It contains five chapters except Preamble and Conclusion,including Purposes,Vision and Principles of Devel-展开更多
The white paper document titled “China’s Space Activities”, released in November 2000 by the Information Office of the State Council, represents the first time for China to fully, systematically and publicly introd...The white paper document titled “China’s Space Activities”, released in November 2000 by the Information Office of the State Council, represents the first time for China to fully, systematically and publicly introduce to the world China’s space development strategy and concerned policies. Its release is a milestone event in the country’s space history, bearing great importance and profound influence to its future space efforts. The paper here describes the shaping processes of some important new ideas and concepts, including the connotative meaning of “space activities in a broad sense” and the roles and positions of different sectors in such activities. It also briefly discusses related policies concerning the country’s space development and short-term concepts and plans on its civil space activities.展开更多
脑小血管疾病(cerebral small vessel disease,CSVD)的部分患者会出现认知功能下降并可能进展为痴呆,严重降低患者的生活质量。目前关于CSVD影像学标志物与认知功能障碍的相关性研究表明,脑白质高信号、血管周围间隙扩大、脑微出血、腔...脑小血管疾病(cerebral small vessel disease,CSVD)的部分患者会出现认知功能下降并可能进展为痴呆,严重降低患者的生活质量。目前关于CSVD影像学标志物与认知功能障碍的相关性研究表明,脑白质高信号、血管周围间隙扩大、脑微出血、腔隙性脑梗死的分布位置、严重程度对各认知域产生不同影响,CSVD导致的认知功能障碍可能与炎症因子间接影响和脑组织纤维束破坏等机制相关。但CSVD影像学标志物与认知功能的关系及其相关机制还需要更进一步研究加以验证。展开更多
文摘By analyzing different expressions of "white space" in classical and modern Chinese gardens, the authors proposed that "white space" theory has infiltrated in graphic and spatial designs and has been widely applied in spatial layouts of gardens. On the basis of elaborating conceptual origin, characteristics and its connotations in the creation of artistic ambience, "white space" was believed valuable and enlightening for the artistic creation of modern landscape architecture.
基金supported in part by the Engineering and Physical Sciences Research Council,U.K.,under grant EP/R00711X/1,in part by Shenzhen Fundamental Research Fund under grants No.KQTD2015033114415450 and No.ZDSYS201707251409055by Guangdong Province grants No.2017ZT07X152 and No.2018B030338001+1 种基金in part by the Foundation for Distinguished Young Talents in Higher Education of Guangdong under grant 2018KQNCX222by the Natural Science Foundation of SZU under grant 2019115.
文摘Exploration of TV white space(TVWS)is a promising solution to mitigate the spectrum shortage and provide opportunities for new applications.In this paper,we present a detailed analysis of spectrum utilisation over TVWS at different locations in London.Both short-term and long-term outdoor measurement campaigns are conducted over large scales to better understand the spectrum features and variations across multiple locations and time periods.Different from most fixed-location-only measurements,we also drive along the main streets of London with a portable moving node to measure the on-route spectrum density along with the corresponding geographical information,which allows us to study the features and variations of spectrum use through a continuous space.To better analyse the dynamic spectrum utilisation,a machine learning based analysis algorithm is developed over the real-world measurements.This approach allows us to characterise the similarity and variability in spectrum usage within and among different channels,locations,and time instances,which is critical for the secondary system deployment to efficiently exploit the white space.
文摘The Information Office of the State Council published a white paper on China’s space activities in 2016 on December27,2016,setting out China’s vision as a space power for the first time.'China’s Space Activities in 2016'is the fourth white paper on China’s space activities issued by the State Council Information Office.It contains five chapters except Preamble and Conclusion,including Purposes,Vision and Principles of Devel-
文摘The white paper document titled “China’s Space Activities”, released in November 2000 by the Information Office of the State Council, represents the first time for China to fully, systematically and publicly introduce to the world China’s space development strategy and concerned policies. Its release is a milestone event in the country’s space history, bearing great importance and profound influence to its future space efforts. The paper here describes the shaping processes of some important new ideas and concepts, including the connotative meaning of “space activities in a broad sense” and the roles and positions of different sectors in such activities. It also briefly discusses related policies concerning the country’s space development and short-term concepts and plans on its civil space activities.
文摘脑小血管疾病(cerebral small vessel disease,CSVD)的部分患者会出现认知功能下降并可能进展为痴呆,严重降低患者的生活质量。目前关于CSVD影像学标志物与认知功能障碍的相关性研究表明,脑白质高信号、血管周围间隙扩大、脑微出血、腔隙性脑梗死的分布位置、严重程度对各认知域产生不同影响,CSVD导致的认知功能障碍可能与炎症因子间接影响和脑组织纤维束破坏等机制相关。但CSVD影像学标志物与认知功能的关系及其相关机制还需要更进一步研究加以验证。
