Nicholas Bourriaud＇s relational aesthetics is regarded as a new approach to art history and criticism, but has recently been appropriated by many art programs as a pedagogical and productive strategy in the classroom...Nicholas Bourriaud＇s relational aesthetics is regarded as a new approach to art history and criticism, but has recently been appropriated by many art programs as a pedagogical and productive strategy in the classroom. While there is much that is positive in Bourriaud＇s ideas in the first sense, its translation into a studio situation is problematic. Offering a corrective through Lacanian psychoanalysis, with acknowledgement of additional figures with corresponding ideas, it is proposed that Bourriaud＇s ideas are valuable additions to pedagogy generally but are equally in need of modifications that encompass a critical understanding of the desire structures of both students and faculty.展开更多
This paper aims at widespread presence of expansive soil which can be obtained in the project from Xiaoxita to Yaqueling first-class highway rebuilding engineering in Yichang City of Hubei Province and weathered sand ...This paper aims at widespread presence of expansive soil which can be obtained in the project from Xiaoxita to Yaqueling first-class highway rebuilding engineering in Yichang City of Hubei Province and weathered sand which can be made full use locally,many experiments have been made. Compaction experiments and expansibility index indoor experiments of undisturbed expansive soil and expansive soil mixed with sand ranging from 10 % to 50 % have been made. Through the test mixing undisturbed expansive soil with different content of weathered sand,it can change the expansive soil water characteristics and compaction characteristics. It can influence the expansibility of the expansive soil index and significantly inhibit the expansibility of the expansive soil and reach the standard of roadbed filler.展开更多
An accurate low-cost ultrasonic localization system is de- veloped for automated mobile robots in indoor environments, which is essential for automatic navigation of mobile robots with various tasks. Although ultrasen...An accurate low-cost ultrasonic localization system is de- veloped for automated mobile robots in indoor environments, which is essential for automatic navigation of mobile robots with various tasks. Although ultrasenic sensors are more cost-effective than other sensors such as Laser Range Finder （LRF） and vision, but they are inaccurate and directionally ambiguons. First, the matched filter is used to measure the distance accurately. For resolving the computational complexity of the matched filter, a new matched filter algorithm with simple compution is proposed. Then, an ultrasonic localization system is proposed which consists of three ultrasonic receivers and two or mote transmitters for improving position and orientation accuracy was developed. Finally, an extended Kalman filter is designed to estimate both the static and dynamic positions and orientations. Various simu lations and experimental results show that the proposed system is effective.展开更多
文摘Nicholas Bourriaud＇s relational aesthetics is regarded as a new approach to art history and criticism, but has recently been appropriated by many art programs as a pedagogical and productive strategy in the classroom. While there is much that is positive in Bourriaud＇s ideas in the first sense, its translation into a studio situation is problematic. Offering a corrective through Lacanian psychoanalysis, with acknowledgement of additional figures with corresponding ideas, it is proposed that Bourriaud＇s ideas are valuable additions to pedagogy generally but are equally in need of modifications that encompass a critical understanding of the desire structures of both students and faculty.
文摘This paper aims at widespread presence of expansive soil which can be obtained in the project from Xiaoxita to Yaqueling first-class highway rebuilding engineering in Yichang City of Hubei Province and weathered sand which can be made full use locally,many experiments have been made. Compaction experiments and expansibility index indoor experiments of undisturbed expansive soil and expansive soil mixed with sand ranging from 10 % to 50 % have been made. Through the test mixing undisturbed expansive soil with different content of weathered sand,it can change the expansive soil water characteristics and compaction characteristics. It can influence the expansibility of the expansive soil index and significantly inhibit the expansibility of the expansive soil and reach the standard of roadbed filler.
基金supported by the MKE(The Ministry of Knowledge Economy,Korea)the ITRC(Information Technology Research Center)support program(ⅡTA-2009-(C1090-0902-0007))
文摘An accurate low-cost ultrasonic localization system is de- veloped for automated mobile robots in indoor environments, which is essential for automatic navigation of mobile robots with various tasks. Although ultrasenic sensors are more cost-effective than other sensors such as Laser Range Finder （LRF） and vision, but they are inaccurate and directionally ambiguons. First, the matched filter is used to measure the distance accurately. For resolving the computational complexity of the matched filter, a new matched filter algorithm with simple compution is proposed. Then, an ultrasonic localization system is proposed which consists of three ultrasonic receivers and two or mote transmitters for improving position and orientation accuracy was developed. Finally, an extended Kalman filter is designed to estimate both the static and dynamic positions and orientations. Various simu lations and experimental results show that the proposed system is effective.
