Results 11 to 20 of about 21,882 (195)
Data poisoning attack detection approach for quality of service aware cloud API recommender system [PDF]
, 2023 To solve the problem that existing studies usually assumed that the QoS data of cloud API recommender system was reliable, ignoring the data poisoning attack on cloud API recommender system by malicious users in open network environment, a data poisoning
Limin SHEN +3 more
core +1 more source
Dizhen xuebao, 2022 针对现有地震波散射问题的解析解均在频域内给出，其适用的频带较窄，不能获取到可靠的瞬态反应解析解的问题，本文利用宽频带频域解析解进一步获取了不同空间点地震反应的宽频带频响函数，并基于傅里叶变换得出SH波入射下圆弧形凹陷地形瞬态动力响应的解析解。以上述为基础，研究了输入脉冲与实际地震动时凹陷的瞬态反应的基本特征，并重点分析了凹陷对地震动的放大效应，该效应定义为凹陷周围不同空间点的地震反应参数，如其峰值和反应谱等与自由场（即弹性半空间）地震反应参数之间的比值。结果表明：输入脉冲时，凹陷角点位移幅值显著放大 ...
Caihong Yang, Minghui Hao, Yushan Zhang
doaj +1 more source
Rare Metals, EarlyView.ABSTRACT Porous NiTi alloys are widely used in biomedical and engineering fields. Using the PBF‐LB technique, the TPMS and Voronoi porous parts with a porosity of ∼67% and a minimum feature size of 0.15 ± 0.02 mm were fabricated. Although the bulk sample fabricated with the same parameters is defect‐free, μ‐CT reconstruction on the porous sample ...
Wen‐Hao Zeng +7 more
wiley +1 more source
Study of Ammonia and Humidity Sensor Based on Conductive Polymers and Its Composites [PDF]
, 2016 环境中的气体和湿度条件会影响人们的生活和工业生产，因而需要研制响应灵敏度高、可靠性优异、长期稳定性好的气体和湿度传感器来进行检测。目前的气体和湿度传感器主要是以金属氧化物和有机高分子为敏感材料。然而基于金属氧化物的传感器工作温度高，基于有机材料的传感器稳定性较差，均无法满足低功耗、低维护成本传感系统的要求。因此本文通过具有p-n异质结的金属氧化物/交联导电聚合物复合材料作为室温气体传感器的敏感材料提高其传感性能；另外以新型的聚电解质--绿色无污染的聚离子液体--为湿度传感器的敏感材料，制得了全湿度范围 ...
王玲玲
core
Rare Metals, EarlyView.ABSTRACT Internal oxidation has been identified as an effective method for enhancing the strength of AgMg alloys. However, the concurrent occurrence of embrittlement remains inadequately understood, thus limiting their broader application. This study investigates the oxidation behavior of AgMg alloys with Mg concentrations ranging from 1 at% to 7 at ...
Hai‐Cheng Zhu +12 more
wiley +1 more source
, 1978 本文提出用二维扫描法测量连续型激光器远场分布.其原理是:被测激光束先经衰减器将功率密度衰减至10~(-2)～10~(-4)瓦/(厘米)~2然后经聚焦镜及平镜反射,聚焦于扫描筒内壁之上,扫描筒壁上有一系列螺旋状分布小孔,各相邻两孔间夹角及轴向距离都相同,首末两孔间轴向距离及相邻两孔圆心间弧线在圆筒横截面上的投影长度均应稍大于欲测光斑直径,当圆筒用电动机带动旋转时,各小孔依次扫过光斑.透过小孔的光线用聚焦镜会聚于探测器上,探测器输出信号经放大器放大后由示波器记录,经整理后可得到“三维 ...
刘建邦, 沈世达
core
Rare Metals, EarlyView.ABSTRACT Photodetectors, based on GaAs nanowires (NWs), hold significant promise in the fields of high integration micro‐ and nano‐optoelectronics applications because of their outstanding electronic and optical properties. To date, significant efforts have been directed toward enhancing the performance of photodetectors, aiming for high detectivity ...
Yu Hao +11 more
wiley +1 more source
The Hospital Outpatient Pharmacy Management System Design and System Implementation [PDF]
, 2015 当今社会是一个信息化腾飞的时代，人民的生活水平不断提高，医疗意识越来越强，医疗服务的需求性也随之增加，医院的信息化管理也在飞速发展和被普遍使用。本人所在工作单位是温州某医院，是省属三级甲等综合性医院，医院为能与时俱进，跟上信息化发展的潮流，为适应现代化生产力发展的需要和人力资源开发利用的要求，医院信息化的发展之路任重而道远。 医院系统信息化是卫生系统对传统人工方式的工作流程和管理模式进行的信息化改造。既要满足医院管理机构的需求，也要满足临床一线工作的需求，为保证医院正常业务流程的顺利进行，患者挂号就医 ...
郑会丹
core
Rare Metals, EarlyView.ABSTRACT With the continuous advancement of materials science and technology, the rare metal gallium has increasingly emerged as a promising alternative to the toxic metal mercury. Although existing research has predominantly focused on the high electrical conductivity and excellent deformability of liquid metal (LM), its intrinsic fluidic property ...
Feifan Guo +6 more
wiley +1 more source
Design and Implementation of On-line Tax Declaration System [PDF]
, 2016 随着科学信息技术的飞速发展，税收申报工作作为云南省税收征管工作中的重要环节，同样需要与时俱进，在提高效率的同时也需要为广大纳税人营造一个方便、快捷、人性化的报税环境。本文通过对网络申报系统所涉及的技术领域的研究以及对云南省国税局总体业务流程、税款征收方式和操作流程进行了需求分析，从理论和实践的角度研究设计了一套运行稳定、界面友好、安全可靠的网络报税系统。紧密结合了纳税人的实际需求，充分利用现有社会资源，妥善解决了系统建设中的各种管理、技术问题，提出了网络离线申报系统的建设思路 ...
杨西子
core