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有效的模(2^(n)+1)乘算法及其VLSI设计
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作者 熊承义 田金文 柳健 《信号处理》 CSCD 北大核心 2006年第5期703-706,共4页
模乘运算在剩余数值系统、数字信号处理系统及其它领域都具有广泛的应用,模乘法器的硬件实现具有重要的作用。提出了一种改进的模(2^n+1)余数乘法器的算法及其硬件结构,其输入为通常的二进制表示,因此无需另外的输入数据转换电路... 模乘运算在剩余数值系统、数字信号处理系统及其它领域都具有广泛的应用,模乘法器的硬件实现具有重要的作用。提出了一种改进的模(2^n+1)余数乘法器的算法及其硬件结构,其输入为通常的二进制表示,因此无需另外的输入数据转换电路而可直接用于数字信号处理应用。通过利用模(2^n+1)运算的周期性简化其乘积项并重组求和项,以及采用改进的进位存储加法器和超前进位加法器优化结构以减少路径延时和硬件复杂度。比较其它同类设计,新的结构具有较好的面积、延时性能。 展开更多
关键词 剩余数值系统 模(2^n+1)乘法器 周期性
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Quality-Oriented Facade Systems: Technical Data Referred to Maintenance Phase and Residual Value 被引量:1
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作者 Rachele Perego 《Journal of Civil Engineering and Architecture》 2014年第12期1506-1517,共12页
Nowadays, clients require solutions that are efficient during the service life as a whole. In this view, maintenance has functional value and greatly contributes to increasing quality in environments. With reference t... Nowadays, clients require solutions that are efficient during the service life as a whole. In this view, maintenance has functional value and greatly contributes to increasing quality in environments. With reference to maintenance phase and residual value of building products upon dismantling, the present manuscript investigates a set of technological packages of quality and technical value referred to two alternative facade systems available for recovery actions on Italian council buildings--the ETICS (external thermal insulation composite system) and the external cladding system--complying with one thermal-insulation strategy, but different in terms of service life duration. Preservation of technical value and value increases are strictly related to maintenance quality and efficiency. Volume of investments in maintenance is not the only parameter to be considered to assess facade-system-management quality. Time-accurate economic assessment requires the entity to be related to periodical checks on performance quality in the building system and in its parts. Effective technical data to draw up consistent estimates and appraisals are rarely available in literature. With all that stated above, the present manuscript aims at introducing technical data related to drawing up reliable cost estimates and effective appraisals in terms of economics, quality and environmental sustainability. Conclusions will be drawn from the end of the manuscript. 展开更多
关键词 Facade system service life maintenance services residual value future cost estimate QUALITY sustainability.
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