, 2010 根据新疆地区1951—2008年月降水资料,运用(旋转)经验正交函数分解(REOF/EOF)、主成分分析、分形理论及地统计学等方法探讨了降水的空间结构及空间变异性。结果表明:降水空间分布以南疆—北疆相反型、北疆—东疆一致与南疆相反的复杂型为主;北疆降水有增加,而南疆则有相对减少的趋势。20世纪50年代和2001—2008年两个时段变异函数曲线符合指数函数,其余时段与球状模型拟合较优;随机因素引起的空间异质性占0.06%~0.17%。20世纪60年代和80年代新疆地区空间变异性最强 ...
徐利岗, 徐文才
core
[Limb reconstruction over four decades: the seamless path from technical integration to disciplinary ecology]. [PDF]
Zhongguo Xiu Fu Chong Jian Wai Ke Za ZhiZhu Y.
europepmc +1 more source
[Effect of different induction chemotherapy regimens on autologous hematopoietic stem cell mobilization in patients with multiple myeloma in the new drug era]. [PDF]
Zhonghua Xue Ye Xue Za ZhiWang XL +8 more
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[Bacterial Infection Spectrum and Antimicrobial Resistance in 2850 Cases of Community-Acquired Pneumonia in Children]. [PDF]
Sichuan Da Xue Xue Bao Yi Xue BanZhong M +6 more
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Shuitu Baochi Xuebao, 2005 生态环境需水量是当前水资源管理等学科研究的重点和难点。对于河流生态环境需水量已形成比较系统的理论和计算方法,但对于其它生态系统则没有固定的计算模式,生态需水量项目也因具体环境而异。依据黄河三角洲自然保护区生态系统特点,其需水量项目主要有植物需水量、湿地蒸散量、土壤需水量、野生生物栖息地需水量、补给地下水需水量和防止岸线侵蚀及河口生态环境需水量等。遥感技术在区域资源环境研究方面具有极大优越性,本文利用遥感技术重点对黄河三角洲湿地生态系统需水量中的蒸散量进行了计算,其它需水量项目则用一般方法进行了计算 ...
doaj
[Infant sleep patterns based on latent class analysis and their influencing factors]. [PDF]
Zhongguo Dang Dai Er Ke Za ZhiWei W, Wang H, Zhang J.
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[Enhancement of radiomics-based machine learning models for predicting efficacy of high-intensity focused ultrasound ablation of uterine fibroids using undersampling methods]. [PDF]
Nan Fang Yi Ke Da Xue Xue BaoCui Y +5 more
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[Prevalence and Influencing Factors of Functional Gastrointestinal Disorders Among Infants Aged 0 to 9 Months With Gastrointestinal Discomfort in China: A Multicenter Cross-Sectional Survey]. [PDF]
Sichuan Da Xue Xue Bao Yi Xue BanWang Z +22 more
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[Epidemiological characteristics of respiratory syncytial virus infection in children in Hebei Province]. [PDF]
Zhongguo Dang Dai Er Ke Za ZhiWang X +7 more
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