Results 21 to 30 of about 1,338,890 (129)
, 2022 本发明提供了一种纹影图像的运动、参数识别方法及系统，在运动模型的壁面固定设有多个标记光源，每个标记光源的灯心安装方向与纹影光源的光路平行，且面向纹影相机用于标记运动模型的运动轨迹；风洞试验后，获得包含有运动模型和标记光源的原始纹影图像，基于标记光源在运动模型上相对于运动模型的空间位置坐标及运动模型的质心坐标分析原始纹影图像，获得风洞实验中运动模型的分离运动轨迹以及动力学参数。本发明在运动模型上安装标记光源，通过简单的坐标对应关系以及几何关系处理获得试验中运动模型的位移、俯仰角变化 ...
汪运鹏, 姜宗林, 王粤
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, 2017 本发明公开一种待辨识对象的运动学参数在轨辨识方法,其能够克服现有技术的缺陷以实现主星运动学参数在轨辨识，不需要消耗外界材质和能量，易于实现，泛用性强。包括步骤：(1)建立与待辨识对象在标定燃料下的运动学预测模型；(2)根据所述运动学预测模型，获取所述待辨识对象的运动学参数的在轨辨识模型；(3)获取所述待辨识对象的机械臂运动关节的运动状态数据，以及对应的主星运动状态实测数据；(4)使用群体智能搜索算法不断比较主星运动状态模拟数据和步骤(3)中得到的实测数据，以两者之间的差距最小为优化目标 ...
张珩, 马欢, 李文皓
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Learner‐Focused Strategy Instruction From the Teachers’ and the Learners’ Perspective
International Journal of Applied Linguistics, Volume 36, Issue 3, Page 2358-2375, August 2026.ABSTRACT Numerous large‐scale quantitative studies have been conducted to yield a macro‐level picture of the effectiveness of strategy instruction. However, little is understood about learners' actual processing of strategy instruction and interaction with the teachers delivering it.
Isobel Kai‐Hui Wang, Andrew D. Cohen
wiley +1 more source
Policy Studies Journal, Volume 54, Issue 3, August 2026.ABSTRACT Despite extensive research on policy diffusion, the ways in which policy attention influences this process remain underexplored. This study addressed this gap by distinguishing between three types of policy attention—political speeches, policy issuance and field visits—and investigating their differential impacts when delivered by central and ...
Xiangning Chen, Yahua Wang
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Policy Studies Journal, Volume 54, Issue 3, August 2026.ABSTRACT This study introduces a dual‐layer protocol for diagnosing how formal institutional designs are implemented in practice in complex governance systems. The protocol builds two linked process maps; one for the formal rules and procedures (rules‐in‐form) and one for the routines actors actually follow in practice (rules‐in‐use).
Sina Jangjoo +7 more
wiley +1 more source
Gongye shui chuli, 2011 使用MBR工艺处理石化废水,需要针对石化废水的特点,并结合工艺运行的实际情况,采取相应的运行管理措施。通过对产水周期、产水量、曝气量、污泥浓度等运行参数的调整,提高了工艺系统处理能力,降低了处理成本,产水水质完全符合排放标准的要求。在调整运行参数的同时,采取措施控制膜污染速率,确保了工艺系统的运行安全和稳定。
李勇, 钟捷
doaj +2 more sources
Gaoya dianqi, 2019 变压器噪声是评价其运行状态的关键参数之一,为了实现基于噪声的变压器运行状态评价,对现场运行的72台110 kV主变进行了噪声检测,提出了奇偶次谐波比、高频比重以及频谱复杂度等3个特征量,并且按照冷却方式差异对上述特征量的数值分布进行了统计分析,确定了现场正常运行变压器噪声特征量的分布范围,分析了变压器运行年限对其噪声特征的影响。结果表明,冷却方式对于变压器平均声压级、奇偶次谐波比、高频比重以及频谱复杂度特征的分布具有较大影响,强迫风冷变压器特征参数普遍偏高,而变压器运行年限对上述特征并无明显影响 ...
吴晓文 +5 more
doaj
Structural Modulation of Magnetic Softness in Fe‐Based Amorphous Alloys via Pulse Current Training
Rare Metals, Volume 45, Issue 6, June 2026.ABSTRACT Fe‐based amorphous alloys, despite their intrinsically low magnetocrystalline anisotropy, suffer from quasi‐dislocation dipoles and localized stress fields that impede domain‐wall motion and increase coercivity. Here, we introduce pulse current training (PCT) as an energy‐efficient technique to overcome these limitations in a Fe76Si9B10P5 ...
Shumin Ye +13 more
wiley +1 more source
World Affairs, Volume 189, Issue 3, Fall 2026.ABSTRACT One of the most prominent contemporary issues in the arms control domain is the regulation of Autonomous Weapon Systems (AWS). Today, there exist global governance procedures for AWS due to intense legal and ethical concerns, especially about those equipped with Artificial Intelligence capabilities, herein referred to as intelligent AWS (IAWS).
Dimitris Tsintsaris
wiley +1 more source
, 2008 本发明提出了一种基于“邮件准则”的模型参数在线修正方法，更具体的说提出了一种卫星轨道参数在线修正方法和一种卫星姿态参数在线修正方法，该方法借用了邮件原理，将信息作为信件，以响应时间为邮戳，经过邮递后，按邮戳时间将实测信息、仿真信息以及控制量正确匹配，然后采用数据平滑和超时计算等策略，克服信息滞后、错配和稀疏等问题，实现卫星姿/轨飞行参数在线修正 ...
张珩, 陈靖波, 赵猛
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