‘Xiang He’ Flowering Crabapple

Study on relationship between pollen exine ornamentation pattern and germplasm evolution in flowering crabapple

Pollen ornamentation patterns are important in the study of plant genetic evolution and systematic taxonomy. However, they are normally difficult to quantify. Based on observations of pollen exine ornamentation characteristics of 128 flowering crabapple germplasms (44 natural species and 84 varieties), three qualitative variables with binary properties (Xi: regularity of pollen exine ornamentat...

Yu - Xiang

My research interests lie in the intersection of machine learning (ML), statistics and optimization. Specifically, my work focuses on developing provable and practical methods for various challenging learning regimes (e.g., high dimensional, heterogeneous, privacy-constrained, sequential, parallel and distributed) and often involves exploiting hidden structures in data (generalized sparsity, un...

Xiang Chen's dissertation

Zi-xiang Wu MD

Purpose. To investigate the clinical abstractnd radiographic outcome of multi-axial expandable pedicle screws (MEPS) in patients with osteoporosis. Methods. One hundred and twenty-!ve consecutive patients received MEPS from the UPASS spinal !xation system to obtain thorocolumbar or lumbosacral stabilization. All patients underwent bone mineral density (BMD) scans. "e indications for use of the ...

Xiang Leng JSNM.dvi

In this study we performed a series of ozone and vacuum annealing experiments on epitaxial La2-xSrxCuO4+δ thin films. The transition temperature after each annealing step has been measured by the mutual inductance technique. The relationship between the effective doping and the vacuum annealing time has been studied. Short-time ozone annealing at 4700C oxidizes an underdoped film all the way to...