Results 171 to 180 of about 39,766 (300)
Guangtongxin yanjiu, 2012 通过对基于傅里叶变换过程的全光OFDM（正交频分复用）进行理论模型分析,采用马赫-曾德干涉仪级联的方式构造出复用/解复用模块,在光域上直接进行IDFT/DFT（离散型傅里叶逆变换/离散型傅里叶变换）过程。在DPSK（差分相移键控）调制、DQPSK（差分四相相移键控）调制、4QAM（2阶正交幅度调制）和16QAM（4阶正交幅度调制）下,利用全光复用/解复用模块模拟了8×40Gbit/s无保护间隔的OFDM系统传输,对误码率等性能作出分析。
周镇辉, 刘小英, 梅勇, 王川
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A systematic review and meta‐analysis of parental mentalization in fathers and mothers
Infant Mental Health Journal: Infancy and Early Childhood, Volume 46, Issue 4, Page 406-423, July 2025.Abstract Despite the growing literature on parental mentalization (including measures such as mind‐mindedness, parental reflective functioning, and parental insightfulness), considerably less research on parental mentalization has been conducted with fathers than with mothers, leaving important gaps in our understanding of gender differences in the ...
Philip Trepiak +2 more
wiley +1 more source
Zhongshan Daxue xuebao. Yixue kexue ban, 2011 【目的】 探讨非小细胞肺癌原发病灶18F氟代脱氧葡萄糖(18F-FDG)摄取与表皮生长因子受体突变的相互关系,及应用最大标准化摄取值预测EGFR突变以期指导临床酪氨酸激酶抑制剂的应用【方法】从2006年11月到2010年9月,收集66例在抗肿瘤治疗之前行EGFR突变检测及PET/CT扫描的NSCLC患者,用SUVmax描述原发病灶的18F-FDG摄取情况,采用荧光定量PCR法检测患者EGFR的突变情况,分析FDG摄取与EGFR突变的关系【结果】 本组病例中EGFR的19号及21号外显子的突变率为33 ...
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Guangtongxin yanjiu, 2011 针对锁相环中晶体振荡器受温度影响的时变和不稳定等特点,在递推辨识算法的基础上提出一种自校正控制和前馈补偿相结合的方案,即隐式自校正控制方案。该方案根据辨识得到的系统参数设计控制器调节系统,使输出信号方差变化最小。将此算法应用到锁相环的自适应预测模块中,并用MATLAB软件仿真验证此算法,仿真结果表明,使用隐式自校正控制算法后,不仅能优化系统的辨识参数,而且输出信号的变化也趋于稳定,可以满足锁相环中输出信号跟踪输入信号的要求。
杨莎, 朱宇霞, 齐志强, 于涵
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People and Nature, Volume 7, Issue 7, Page 1749-1768, July 2025.Abstract Social‐ecological systems (SES) are coupled systems formed by the intricate interactions between humans and nature. Our movement towards sustainable lifestyles requires a robust understanding of these interactions. Achieving a sustainable win‐win situation for both social and ecological systems, therefore, necessitates a sound scientific ...
Na Sa +6 more
wiley +1 more source
‘How Does Living in Institution Impact Young Lives?’—Insights From Young People in Ci'aiyuan
Children &Society, Volume 39, Issue 4, Page 760-769, July 2025.ABSTRACT Institutional care often carries a negative reputation due to its perceived adverse effects on children and young people. However, it remains a significant form of alternative care in China. In Xiangxi, childcare institutions, known as ci'aiyuan, have been further expanding by involving wider populations in recent years.
Shian Yin
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Equine Veterinary Journal, Volume 57, Issue 4, Page 1053-1064, July 2025.Abstract Background In Great Britain, owners are keeping their horses into increasingly older age, reflecting societal changes in human–animal relationships. The uptake of routine veterinary services is reported to reduce as horses age. Horse owners seek information regarding their animal's health from alternative sources before and/or following ...
Rebecca Smith +4 more
wiley +1 more source