Guangtongxin yanjiu, 2008 文章讨论了在嵌入式领域实现信号采集及频谱显示的两个常用方案:数字信号处理器（DSP）方案和现场可编程门阵列（FPGA）方案。综合分析了这两种方案的优缺点。详细介绍了具体的FPGA实现方法。系统采用模块化设计,所有的功能模块都用Verilog HDL语言描述,具有自主的知识产权。仿真综合结果表明,系统能满足高速信号采集和频谱显示的要求。
石文静, 任恩恩, 于超
doaj
pAW101-EcoRⅠ限制性片段在广东人群中的分布及其在法医学上的应用
Zhongshan Daxue xuebao. Yixue kexue ban, 1992 用pAW1015kb的片段为探什,检测广东地区106例无血缘关系居民的EcoRI酶切限制性片段(RF)的分布情况。共发现长度各异的65条RF,每人只具有其中的1～2条。统计学分析证明,这些RF的分布符合哈一温氏平衡。无血缘关系的两个个体间具有完全相同的RF图谱的机会为0.00048(相当于l/2080)。家系调查结果表明,这些RF符合孟德尔遗传规律。本文是应用作者推导出来的计算RF大小的数学模式。此法在作亲权鉴定时,父权排除率可达0.914,相当于目前国内所用的血型测定法(包括HLA-A,-B抗原测定 ...
doaj
水资源对城市化的约束力已经成为干旱缺水地区决定城市化发展速度,进而决定城市化和社会经济发展规模的重要外营力之一,科学度量并探讨其时空变化,对水资源可持续利用与城市化正常推进具有重要意义。以定性与定量分析相结合的方法建立了水资源对城市化约束强度的综合测度指标体系,采用熵技术支持下的层次分析法构建出水资源对城市化约束强度的综合测度模型,并对1985-2005年河西走廊水资源对城市化约束强度的时空变化进行了分析。结果表明,河西走廊水资源对城市化的约束强度在空间上总体表现为自东向西逐渐减小 ...
方创琳, 鲍超
core
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