Results 71 to 80 of about 21,882 (195)
Guangtongxin yanjiu, 2005 文章介绍了一种基于滤波器S11响应的时域分析的调谐方法。这种方法可以区分谐振器和耦合孔各自产生的时域响应,可以用来指导调节谐振器和耦合系数,得到所需的滤波器响应。通过这种方法还可以观察滤波器内部各元件间是如何相互作用的。
喻志刚, 廖德祥
doaj
Conservation Biology, EarlyView.Abstract Measuring area‐based conservation outcomes in tropical forests is challenging due to cryptic human disturbances (e.g., hunting). As a result, comparative studies of management strategies providing quantitative outcomes remain scarce, especially in the Neotropics.
Lucy Perera‐Romero +5 more
wiley +1 more source
Gaoya dianqi, 2014 在低气压条件下,笔者对间隙型浪涌保护器（surge protective gap,SPG）的直流和脉冲电压击穿特性、电压保护水平、响应时间进行了实验研究。电极材料为钨铜,直径10 mm,间隙距离3 mm,气压范围12 000 Pa。结果显示,保护间隙的直流击穿电压和脉冲击穿电压在实验气压范围内均出现了极小值;保护间隙的压比（UP/UC）在2.102.94之间;SPG的响应时间随气压升高而增大。
孙伟, 李勇, 郭瑞艳, 杜晓晖
doaj
荧光猝灭响应的溶解氧有机改性溶胶-凝胶传感膜的构筑 [PDF]
, 2006 利用二甲基二甲氧基硅烷为有机改性剂,制备溶胶-凝胶,并通过对氧荧光猝灭指示剂4,7-二苯基-1,10-邻菲咯啉钌(Ru(dpp)3(ClO4)2)的包埋,构筑以Ru(dpp)3(ClO4)2为荧光指示剂的氧传感敏感膜.利用蓝光发光二极管(LED,λmax=475nm)为激发光源,考察了氧敏感膜的荧光行为,并以此进行了水体中溶解氧含量的检测.传感膜对水溶液溶解氧的最低检出限为0.2μg/mL,测定的相对标准偏差为2%,线性范围为0.5~16μg/mL,响应时间(t95)为60s ...
王小如 +4 more
core
Web services QoS prediction via matrix completion with structural noise [PDF]
, 2015 With the rapid development of service-oriented computing, more and more Web services with the same or similar function are deployed on the Internet. Usually, before selecting the most suitable service, users need to predict QoS of unused services from ...
Fu XIAO +4 more
core +1 more source
Evaluating past and future contributions of conservation programs to species recovery
Conservation Biology, EarlyView.Abstract Impact evaluation of conservation actions is a crucial step in global efforts to curb the biodiversity crisis. Through robust impact evaluation, practitioners can assess the effectiveness of conservation strategies and optimize the use of limited resources.
Rebeca E. Young +10 more
wiley +1 more source
Hybrid data synchronization mechanism for mobile computing [PDF]
, 2016 The hybrid data synchronization mechanism (HDSM) was proposed,which integrates centralized architecture and ad hoc architecture together,and a series of self-organization domains (SOD) were built as to cut down the traffic of synchronization data and ...
Xiao-long XU, Xiao-xiao LIU
core +1 more source
Conservation Biology, EarlyView.Abstract Prioritization in conservation is crucial for the development of efficient and effective decision‐making policies. For many decades, the importance of some species and their habitats has been assessed and applied in conservation legislation, but bats and their diurnal roosts have ofbeen overlooked.
David López‐Bosch +6 more
wiley +1 more source
Analysis of Linux Real - time Mechanism [PDF]
, 2007 摘 要:随着Linux 操作系统在嵌入式实时系统中的广泛应用,有效地提高Linux 有限的实时性能是一个重要问题,而 Linux 内核可抢占调度是实时性能的改进的关键。对Linux 内核调度器的工作原理进行了深入分析,并阐述了调度延迟是 其实时性不强的原因,然后介绍通过可抢占机制对Linux 内核进行改造,测试了改进后的内核的实时性。Abstract :With the wide application of Linux operation system in embedded real - time ...
余兵, 黎忠文
core +1 more source
Slow task scheduling algorithm based on node identification [PDF]
, 2014 In order to reduce the influence of the slow task, produced in big data processing, a scheduling algorithm (TQST) combining recognition, speculation and seduction of slow task was proposed.
Dong LIU +3 more
core +1 more source