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Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：First-order factors of linear Mahler operators
线性 Mahler operators 一阶因子
2023/4/27
We develop and compare two algorithms for computing first-order right-hand factors in the ring of linear Mahler operators l_r M^r+?+l_1 M+l_0 where l_0,…,l_r are polynomials in x and Mx=x^b M for some...
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：Estimation of Common Factors for Microstructure Noise and Effcient Price in a High-frequency Dual Factor Model
高频双因子模型 微结构 噪声公因数 效率价格 估计
2023/4/17
We develop the Double Principal Component Analysis (DPCA) based on a dual factor structure for high-frequency intraday returns contaminated by microstructure noise. The dual factor structure allows a ...
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：Prediction When Factors are Weak
因素较弱 预测 宏观经济预测
2023/5/5
In macroeconomic forecasting, principal component analysis (PCA) has been the most prevalent approach to the recovery of factors, which summarize information in a large set of macro predictors. Nevert...
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：erration split-plot designs via complementary sets when the whole plot factors are important
图因子 互补集 错误分割图设计
2023/5/15
In practice, fractional factorial split-plot (FFSP) designs are widely used when the levels of some factors are very difficult to change or control. The factors of an FFSP design are divided into two ...
Landscape and climate factors can predict prevalence of Lyme disease bacteria（图）
气候因素 莱姆病细菌 公共卫生
2023/7/7
Predicting Lyme disease hotspots can help public health officials guide resources and proactive messaging to the public. But the ecology of the disease is complex, involving various host animals, blac...
Philadelphia is the poorest large city in the United States. It’s also unusual in having a high proportion of homeowners compared to renters. Taken together, this means that poorer homeowners may lack...
Michigan State University research uncovers genetic risk factors for eating disorders
anorexia nervosa bulimia nervosa psychology
2007/5/14
May 9, 2007，EAST LANSING, Mich. — Until recently, it was generally believed that eating disorders such as anorexia nervosa and bulimia nervosa resulted solely from environmental influences such as pee...
May 11, 2007，Scientists have discovered three unsuspected regions of human DNA that contain clear genetic risk factors for type 2 diabetes, and another that is associated with elevated blood triglycer...
Exeter scientists highlight genetic risk factors behind type 2 diabetes
type 2 diabetes genetics
2007/4/30
27 April, 2007，Scientists from the Peninsula Medical School and the University of Oxford have identified three new genes that predispose individuals to develop type 2 diabetes. This research, which fo...
Landmark study highlights complex genetic risk factors behind type 2 diabetes
genetics diabetes
2007/4/27
26 April 2007，A UK collaboration of scientists has identified three new genes that predispose individuals to develop type 2 diabetes, bringing scientists a step closer towards understanding what cause...