Results 41 to 50 of about 25,659 (142)
3D-QSAR study for inhibitors of cyclin-dependent kinase 4(细胞周期蛋白依赖性激酶CDK4抑制剂的3D-QSAR研究)
Zhejiang Daxue xuebao. Lixue ban, 2008 采用比较分子场分析法(comparative molecular field analysis，CoMFA)和比较分子相似性指数分析法(comparative similarity indices analysis,CoMSIA),系统研究了57个CDK4酶抑制剂的三维定量结构-活性关系.所建立CoMFA和CoMSIA模型的交叉验证系数q2值分别为0.656和0.811，非交又验证相关系数r2分别为0.954和0.969,都具有较好的预测能力 ...
YANGShu-mei(杨书梅) +2 more
doaj +1 more source
Dizhen xuebao, 2020 针对5个典型地震震中周边的50余个场地记录到的地电场数据展开分析，计算了各场地不同方位之间的地电场相关系数δxy或同方位不同极距之间的地电场相关系数δxx，以此表征场地地电场变化的复杂性。结果显示：地震活动平静期间这些场地的地电场相关系数δxy和δxx 具有相对稳定性，中强地震孕育发生期间震中附近多数场地的δxy和δxx会出现明显下降，且这种现象具有方向性、时间准同步性，并随着震中距的增加而逐步消失。从机理上推断，δxy和δxx的下降反映了震中附近局部场地地电场变化的非均匀性。
Weiming Wang, Dacheng Tan
doaj +1 more source
Learning Styles, Engagement and Anxiety in AI‐Mediated Writing: A Multimodal Feedback Study
International Journal of Applied Linguistics, EarlyView.ABSTRACT Artificial intelligence (AI) tools now permeate English academic writing. However, evidence on how feedback modalities align with student differences and with psychological mechanisms remains limited. Prior work often reduced learning styles to simple matches with delivery modes and treated learning engagement and writing anxiety as peripheral.
Yi Ren +3 more
wiley +1 more source
Gaoya dianqi, 2009 为了更准确地对超高压线路进行防雷评价和计算,笔者依据长间隙放电与雷击放电的相似性,在实验室中建立击距系数模型,研究击距系数与相关因素的关系。实验结果显示击距系数与雷电流幅值大小并无相关性,但随着线路高度的增加而减小,运用数学分析方法得到击距系数K与杆塔高度h之间满足关系式:K=1.032 3-0.004 1×h。试验结果成功地解释了500 kV天广线某些地段现场屏蔽失效的问题,可以用于超高压输电线路防雷评价和计算。
许飞 +4 more
doaj
International Journal of Applied Linguistics, EarlyView.ABSTRACT This computational linguistic study analyzes 8743 Rednote posts to examine how sentiment, emotion, and content domain collectively shape social comparison dynamics on social media. We identify four key findings: (1) an emotional gradient, where upward comparison content exhibits the highest sentiment scores and downward comparison the lowest; (
Michelle Mingyue Gu +7 more
wiley +1 more source
Guangtongxin yanjiu, 2016 采用基于两路检测信号相关系数的随机生成数算法,通过偏振控制器对输入偏振态进行调节,解决了双M-Z（马赫-曾德）光纤传感系统中出现的偏振相位偏移问题,改善了两路检测信号的相关性。对随机生成数算法的可行性及其3个重要参数进行了分析讨论。实验结果表明,算法执行5min可搜索到邦加球的绝大部分区域,具备全局搜索能力,并且通过合理地设置随机生成数算法的参数,可使系统在3min左右搜索到偏振态的最佳位置,使两路检测信号的相关系数保持在0.9左右,恢复两路检测信号的良好相关性。
黄微卫, 张志勇, 邵理阳
doaj
Accountability in Government Use of AI: Citizen Concerns and Preferences
Public Administration, EarlyView.ABSTRACT Government adoption of AI opens the “pandora's box” of accountability, a core aspect of public value. Despite the centrality of governmental AI accountability, citizens' concerns and preferences in holding governments accountable for AI usage remain poorly understood.
Naikang Feng, Yanto Chandra
wiley +1 more source
野生动物学报, 2019 利用衰减全反射红外光谱技术，对赛加羚羊等3个物种共49份相关样本进行检测、分析并计算其相关系数，结果：同支羚羊角壳不同取样部位红外光谱相关系数为96.69%—99.43%；不同羚羊角壳相同取样部位红外光谱相关系数为94.24%—99.43%；不同物种角质壳红外光谱相关系数为99.28%—99.47%；羚羊角壳与其骨质芯混合物红外光谱随角骨比例变化，骨质成分越多，其红外光谱与羚羊角壳红外光谱的相关系数越低。由此推断红外光谱因取样部位、个体及物种不同而产生差异，且个体间和取样部位差异甚至大于种间差异 ...
刘闯李超金煜
doaj
Policy Studies Journal, EarlyView.Abstract We examine whether and how public participation in policymaking contributes towards fostering stakeholder support for policy proposals formulated in the bureaucratic arena. We explain how key markers of procedural fairness describing both the participation process and policymakers' presentations of it during the decision justification stage co‐
Adriana Bunea, Idunn Nørbech
wiley +1 more source
World Water Policy, Volume 12, Issue 2, May 2026.ABSTRACT Water governance has emerged as a critical analytical framework for addressing the complexity of socioecological water systems in contexts of increasing climate vulnerability and anthropogenic pressure. This study presents a systematic review and bibliometric analysis of 50 scientific articles indexed on water governance published between 2018
Roger Pichis‐García +1 more
wiley +1 more source