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- Yuanhui Xiao, Robert D. Frisina, Alexander Gordon, Lev Klebanov, Andrei Yakovlev
- BMC Bioinformatics
- 2004

To identify differentially expressed genes, it is standard practice to test a two-sample hypothesis for each gene with a proper adjustment for multiple testing. Such tests are essentially univariate and disregard the multidimensional structure of microarray data. A more general two-sample hypothesis is formulated in terms of the joint distribution of any… (More)

- Xing Qiu, Yuanhui Xiao, Alexander Gordon, Andrei Yakovlev
- BMC Bioinformatics
- 2005

The number of genes declared differentially expressed is a random variable and its variability can be assessed by resampling techniques. Another important stability indicator is the frequency with which a given gene is selected across subsamples. We have conducted studies to assess stability and some other properties of several gene selection procedures… (More)

- Galina V. Glazko, Alexander Gordon, Arcady R. Mushegian
- Bioinformatics
- 2005

MOTIVATION
Many types of genomic data are naturally represented as binary vectors. Numerous tasks in computational biology can be cast as analysis of relationships between these vectors, and the first step is, frequently, to compute their pairwise distance matrix. Many distance measures have been proposed in the literature, but there is no theory justifying… (More)

- Edward Abraham, Alexander Gordon, Omar Abdul-Hadi
- Journal of pediatric orthopedics
- 2005

The intent of this study was to heighten awareness and to present the authors' experience of an uncommon supracondylar humerus fracture in children. Twenty-two children were studied over a period of 18 years. The average age was 7 years, and oldest child was 11 years at time of injury. The fracture subtypes with medial condyle, lateral condyle, and… (More)

- James Simpson, Celia M. Yates, David K. Whyler, Helen Wilson, Arthur J. Dewar, Alexander Gordon
- Neurochemical Research
- 1985

The activities of acid phosphatase, hexosaminidase, β-galactosidase, Mg2+-stimulated Na+ K+ ATPase, fumarase and ATP: citrate lyase were measured in grey matter of rabbit spinal cord 7–8 days after intra-ventricular or intra-cisternal injection of aluminium. RNA, DNA, and water content were measured in whole spinal cords. Choline acetyltransferase (CAT) and… (More)

- Lev Klebanov, Alexander Gordon, Yuanhui Xiao, H. Land, Andrei Yakovlev
- Computational Statistics & Data Analysis
- 2006

We introduce a nonparametric test intended for large-scale simultaneous inference in situations where the utility of distribution-free tests is limited because of their discrete nature. Such situations are frequently dealt with in microarray analysis where the number of tests is much larger than the sample size. The proposed test statistic is based on a… (More)

- Alexander H Gordon, Geordie P Grant, Sanjeev K Kaul
- Journal of clinical anesthesia
- 2004

We present the case of a 19-year-old woman who developed sudden severe left-sided tension pneumothorax in the recovery room after undergoing a 6-hour open reduction and internal fixation of an anterior and posterior pelvic fracture sustained in a motor vehicle accident 4 days prior to surgery. Additional preoperative injuries included a right-sided… (More)

- Vishal Gupta, Greg Davis, +4 authors Anshu B Mathur
- Journal of biomedical materials research. Part A
- 2010

Regenerative tissue engineering requires biomaterials that would mimic structure and composition of the extracellular matrix to facilitate cell infiltration, differentiation, and vascularization. Engineered scaffolds composed of natural biomaterials silk fibroin (SF) and chitosan (CS) blend were fabricated to achieve fibrillar nano-structures aligned in… (More)

- Alexander Gordon, Linlin Chen, Galina V. Glazko, Andrei Yakovlev
- Computational Statistics & Data Analysis
- 2009

A new procedure is proposed to balance type I and II errors in significance testing for differential expression of individual genes. Suppose that a collection, F(k), of k lists of selected genes is available, each of them approximating by their content the true set of differentially expressed genes. For example, such sets can be generated by a subsampling… (More)

- Yuanhui Xiao, Alexander Gordon, Andrei Yakovlev
- EURASIP J. Bioinformatics and Systems Biology
- 2006

Distribution-free statistical tests offer clear advantages in situations where the exact unadjusted p-values are required as input for multiple testing procedures. Such situations prevail when testing for differential expression of genes in microarray studies. The Cramér-von Mises two-sample test, based on a certain L-distance between two empirical… (More)