Zobrazeno 1 - 10
of 468
pro vyhledávání: '"誤差"'
Publikováno v:
Xibei Gongye Daxue Xuebao, Vol 41, Iss 4, Pp 802-811 (2023)
Accurate and fast random error estimation is essential to improve satellite control. In this paper, the random error of the satellite being launched into orbit is explored. According to the uncertainty matrix of six satellite orbit parameters associa
Externí odkaz:
https://doaj.org/article/61c63c4f31ff4b079b61d273f5a13cc2
Publikováno v:
Kongjian kexue xuebao, Vol 43, Pp 736-746 (2023)
以实际广播星历、精密星历和北斗星基增强系统(BDSBAS)增强报文为实验数据，通过计算BDSBAS轨道误差、卫星钟差、空间信号测距误差和BDSBAS格网电离层有效点、播发时间和电离层延迟误差6个
Externí odkaz:
https://doaj.org/article/7225f8d67676431fbc0ea520c47cfa67
Publikováno v:
Jianzhu Gangjiegou Jinzhan, Vol 25, Pp 23-31 (2023)
为对一种预制装配式钢-混凝土组合梁栓钉抗剪连接件的构造设计方法和施工安装误差影响进行深入研究，完成了18个预制装配式栓钉连接件和2个普通现浇栓钉连接件的静力推出试验。在优化
Externí odkaz:
https://doaj.org/article/4e44eaffd79e4b36a1f2b0781e42e1a2
Publikováno v:
Tourism Review, 2023, Vol. 78, Issue 2, pp. 646-664.
Externí odkaz:
http://www.emeraldinsight.com/doi/10.1108/TR-02-2022-0094
Publikováno v:
Zhongshan Daxue xuebao. Yixue kexue ban, Vol 44, Pp 85-92 (2023)
目的探讨体表光学图像引导技术（SGRT）联合图像引导放疗技术（IGRT）在乳腺癌术后放疗中实施等中心双引导复位的可行性，评估新的复位模式相对于传统复位模式的误差精度差异。方法回
Externí odkaz:
https://doaj.org/article/9730271727ef4588904346511cc59fc1
Publikováno v:
Zhongshan Daxue xuebao. Yixue kexue ban, Vol 44, Pp 131-137 (2023)
目的分析系统误差校正前后摆位误差的差异。为了确定在鼻咽癌治疗中最合适的影像引导策略，我们使用不同的扫描范围和影像引导频率对鼻咽癌（NPC）患者进行螺旋断层放疗（HT）。方法
Externí odkaz:
https://doaj.org/article/226bea0a8a284b0c8aa24b49971ebf37
Publikováno v:
全球能源互联网, Vol 5, Iss 5, Pp 447-453 (2022)
随着“双碳”背景下新型电力系统的建设，传统的单一供能网络逐渐发展成为多能耦合的综合能源系统。综合能源系统在信息采集和传输过程中会不可避免地出现量测误差，而传统的加权最
Externí odkaz:
https://doaj.org/article/50314f60add94cf7905a7787d647ccdf
Publikováno v:
Xibei Gongye Daxue Xuebao, Vol 40, Iss 3, Pp 602-609 (2022)
The measurement accuracy of a single-point L-type total pressure probe in the inlet stage outlet flow path of a vortex engine compressor and the influence of the probe on the flow field were investigated via numerical simulation. The change pattern o
Externí odkaz:
https://doaj.org/article/855572dd47fb4edeb540bac650028b52
Publikováno v:
Xibei Gongye Daxue Xuebao, Vol 40, Iss 3, Pp 679-689 (2022)
Gear transmission characteristics are the most important research contents in gear transmission, and contact characteristics are important factors that affect gear transmission performance. The establishment of tooth surface contact analysis (TCA) mo
Externí odkaz:
https://doaj.org/article/ef75e8b2ffb44ee9ba8450597b3e0c36
Autor:
SUNWenbing(孙文兵), XIEWenping(谢文平)
Publikováno v:
Zhejiang Daxue xuebao. Lixue ban, Vol 49, Iss 3, Pp 308-315 (2022)
构造了一个带参数的Riemann-Liouville分数阶积分恒等式，得到几个关于h-预不变凸函数的带参数的分数阶积分不等式。当参数取特殊值时，分别得到了“中点型”“梯形型”和“Simpson型”积分
Externí odkaz:
https://doaj.org/article/00cba084e56348f497587b39d9e1105d