Results 71 to 80 of about 24,422 (178)
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
Design and Implementation of Ordering Backstage Management System [PDF]
, 2016 订货管理是产品流通中最为重要的一环，传统的订货模式有其不可避免的弊端，例如数据的更新缓慢，订单统计效率低下，人工登记的错误率比较高，以及企业必须要耗费许多的人力进行产品的介绍和宣传，这使得企业必须在订货会上投入较多的精力，也就无形之中增加了企业的运营成本。这样低效率的订货模式成为企业发展的瓶颈，因此企业迫切需要一种更加高效的订货模式来弥补传统订货模式所带来的种种不便。 该订货会系统必须是和现阶段的电子信息化产业相结合，能够大幅度地提升订货会的效率，突破传统订货会模式的局限 ...
王菲
core
Multi-Objective Optimization of Ionization Chamber Structure Based on Genetic Algorithm [PDF]
Ionization chambers play a crucial role in large-scale radiation imaging systems. However，the response time of conventional parallel-plate ionization chambers is too long to meet the requirements for rapid detection. To address this issue，a grid detector
Jiahao CHANG +4 more
core +1 more source
Issue Attention in Public Opinion Polls: Pollsters as Agenda Responders and Agenda Setters
Policy Studies Journal, EarlyView.ABSTRACT Polling organizations, like other policy actors, must prioritize certain issues. We argue that, for normative and financial reasons, pollsters prioritize issues that are viewed as important by other institutions and the public, leading them to focus survey questions on issues that are on congressional and media agendas, and which are public ...
Qian Zhang +2 more
wiley +1 more source
Design and Implementation of Project Evaluation System for Bank [PDF]
, 2015 项目评估考核系统面向的是全体员工，每位员工根据他所在不同的部门，将去评定相应的评审表，并且根据这些结果汇总成项目的最终评审结果，从而达到对项目合理的评审，能为今后项目决策提供有利的参考依据。 银行日常工作中面临各种项目需要业务人员进行评估，同时也需要考核人员对项目评估结果进行阶段性考核，以确保项目评估人员的评估质量，正是由于这个需求过程，本文设计与实现了银行项目评估考核系统。该系统主要功能包括用户登录功能、信息发布功能、后台管理功能、评估项目、评估考核功能。本系统采用JSF技术框架 ...
王艺贤
core
Rare Metals, Volume 45, Issue 5, May 2026.ABSTRACT This study demonstrates a new strategy for modifying the boron content to address stress‐relief cracking (SRC) in the 7CrMoVTiB10.10 alloy. First, coarse‐grained heat‐affected zone (CGHAZ) specimens with different boron contents were prepared via simulated welding thermal cycles.
Dongdong Zhang +3 more
wiley +1 more source
Spatially Downscaling of Future Food Demand for Policy Planning
World Food Policy, Volume 12, Issue 1, May 2026.ABSTRACT Understanding the subnational dynamics of food demand, while accounting for the evolution of the agrifood system at the global level, remains a challenge for designing food policy to ensure food security. To link global agrifood systems with subnational food policy planning, we downscale per capita food demand for 62 food commodities at the ...
Chun Song +3 more
wiley +1 more source
Functional Ecology, Volume 40, Issue 5, Page 1151-1164, May 2026.Read the free Plain Language Summary for this article on the Journal blog. Abstract Plant phenology is crucial for understanding plant growth and climate feedback. It affects canopy structure, surface albedo, and carbon and water fluxes. While the influence of environmental factors on phenology is well‐documented, the role of plant intrinsic factors ...
Yunpeng Luo +8 more
wiley +1 more source
人为操作因素对酶联免疫吸附法检测乙肝病毒血清标志物影响的探讨
Zhongguo shiyan zhenduanxue, 2010 目的研究探讨在检验日常工作中,人为操作因素对酶联免疫吸附法（ELISA法）检测乙肝病毒(（HBV）血清标志物的影响情况。方法用ELISA法检测HBV血清标志物中具有代表性的表面抗原（HBSAG）及核心抗体（HB-CAB）,对加样后加酶结合物间隔时间、终止反应后延时比色时间、洗板次数、反应温度等四个人为操作条件对结果的影响情况进行分析。结果 HBCAB随着加入样本后再加入酶结合物间隔时间的延长,无论是阴性对照、质控品还是血清样本的吸光度均呈下降趋势,假阳性率增加;HBSAG随着终止反应后比色时间的延长 ...
丁文 +5 more
doaj
An I/O Scheduling Algorithm for Solid State Disk Based on Request Size [PDF]
, 2013 对于同类型的I/O请求,基于闪存固态盘的请求响应时间与请求大小基本呈线性比例关系,并且固态盘的读写性能具有非对称性。针对该特性,提出一种基于请求大小的固态盘I/O调度(SIOS)算法,从I/O请求平均响应时间的角度提高固态盘设备的I/O性能。根据读写性能的非对称性,对读写请求进行分组并且优先处理读请求。在此基础上首先处理等待队列中的小请求,从而减少队列中请求的平均等待时间。采用SlC和MlC 2种类型的固态盘进行实验,在5种测试负载的驱动下与lInuX系统中的3种调度算法进行比较,对于SlC固态盘 ...
吴素贞, 毛波, 陈晓兰
core