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Study on Landscape Restoration in City Memory Space: A Case Study of Temple of Lord Fan Wenzheng in Ancient Huishan Town
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作者 ZHU Yunfeng ZHOU Wei 《Journal of Landscape Research》 2014年第6期43-45,48,共4页
Against the background of rapid urbanization, city memories have been gradually lost. In view of this, historic blocks and ancient buildings are taken as the key points of restoring collective memory spaces of cities,... Against the background of rapid urbanization, city memories have been gradually lost. In view of this, historic blocks and ancient buildings are taken as the key points of restoring collective memory spaces of cities, and Temple of Lord Fan Wenzheng in ancient Huishan Town, Wuxi City as a typical case to define tangible landscape elements in memory spaces. By analyzing the process of restoring buildings, pavements, waters, stone layouts and plants in the temple, practical means of restoring tangible landscapes in city memory spaces were summarized, so as to provide references for protecting original town landscapes, repairing damaged memory spaces, and inheriting city memories. 展开更多
关键词 City memory space Tangible landscape Restoration Ancient Huishan Town Temple of Lord Fan Wenzheng
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LDPC Coding Scheme for Improving the Reliability of Multi-Level-Cell NAND Flash Memory in Radiation Environments 被引量:2
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作者 Guangjun Ge Liuguo Yin 《China Communications》 SCIE CSCD 2017年第8期10-21,共12页
Utilizing commercial off-the-shelf(COTS) components in satellites has received much attention due to the low cost. However, commercial memories suffer severe reliability problems in radiation environments. This paper ... Utilizing commercial off-the-shelf(COTS) components in satellites has received much attention due to the low cost. However, commercial memories suffer severe reliability problems in radiation environments. This paper studies the low-density parity-check(LDPC) coding scheme for improving the reliability of multi-level-cell(MLC) NAND Flash memory in radiation environments. Firstly, based on existing physical experiment works, we introduce a new error model for heavyion irradiations; secondly, we explore the optimization of writing voltage allocation to maximize the capacity of the storage channel; thirdly, we design the degree distribution of LDPC codes that is specially suitable for the proposed model; finally, we propose a joint detection-decoding scheme based on LDPC codes, which estimates the storage channel state and executes an adaptive log-likelihood ratio(LLR) calculation to achieve better performance. Simulation results show that, compared with the conventional LDPC coding scheme, the proposed scheme may almost double the lifetime of the MLC NAND Flash memory in radiation environments. 展开更多
关键词 low-density parity-check(LDPC) coding multi-level-cell(MLC) NAND Flash memory joint detection-decoding commercial off-the-shelf(COTS) components space radiation environments
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A Biomimetic Climbing Robot Based on the Gecko 被引量:18
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作者 Carlo Menon Metin Sitti 《Journal of Bionic Engineering》 SCIE EI CSCD 2006年第3期115-125,共11页
The excellent climbing performance of the gecko is inspiring engineers and researchers for the design of artificial systems aimed at moving on vertical surfaces. Climbing robots could perform many useful tasks such as... The excellent climbing performance of the gecko is inspiring engineers and researchers for the design of artificial systems aimed at moving on vertical surfaces. Climbing robots could perform many useful tasks such as surveillance, inspection, repair, cleaning, and exploration. This paper presents and discusses the design, fabrication, and evaluation of two climbing robots which mimic the gait of the gecko. The first robot is designed considering macro-scale operations on Earth and in space. The second robot, whose motion is controlled using shape memory alloy actuators, is designed to be easily scaled down for micro-scale applications. Proposed bionic systems can climb up 65 degree slopes at a speed of 20 mm·s^-1. 展开更多
关键词 GECKO ROBOTICS biomimetics CLIMBING space memory alloy
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