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The brain blood vasculature consists of a highly ramified vessel network that is tailored to meet its physiological functions. How the brain vasculature is formed has long been fascinating biologists. Here we report that the developing vasculature in the zebrafish midbrain undergoes not only angiogenesis but also extensive vessel pruning, which is driven by(More)
RATIONALE AND OBJECTIVES Although the spiculation levels of breast mass boundaries are a primary sign of malignancy for masses detected on mammography, developing an automated computerized method to detect spiculation levels and quantitatively evaluating the performance of such a method is a difficult task. The objectives of this study were to (1) develop(More)
RATIONALE AND OBJECTIVES Segmentation is an important and challenging task in a computer-aided diagnosis (CAD) system. Accurate segmentation could improve the accuracy in lesion detection and characterization. The objective of this study is to develop and test a new segmentation method that aims at improving the performance level of breast mass segmentation(More)
In this paper an automatic and effective method was proposed for mass segmentation in mammography. Based on the facts that mass edges are continuous and closed curves consisted of points which have larger gradient transformation, a plane fitting method and a dynamic programming technique were applied. The regions of interest (ROIs) used in this study were(More)
The objective of this study was to evaluate the association betweenthe quantitative assessment of background parenchymal enhancement rate (BPER) and breast cancer. From 14,033 consecutive patients who underwent breast MRI in our center, we randomly selected 101 normal controls. Then, we selected 101 women with benign breast lesions and 101 women with breast(More)
Economic crisis is both a challenge and a chance for manufacturing enterprises of the Pearl River Delta facing the industrial upgrading. This article is a very good reference for enhancing competitive advantage which is on an empirical study of the relationship between corporate strategy, manufacturing flexibility and performance. This paper reviews(More)
We report a 38-year-old man of multiple myeloma with bilateral femoral nerve entrapment caused by bilateral huge protruding masses in the inguinal areas. The masses were identified as iliopsoas muscular amyloidoma after the operation. He was diagnosed with multiple myeloma 1 year ago before he was admitted to our hospital. He complained of muscle weakness(More)
Data mining, with its descriptive and predictive ability, can discover the hidden patterns of data from a large-scale data warehouse by precise mathematical means, which is helpful for decision making. With a panel data analysis, this paper examines the relation between managerial ownership and firm performance. Based on a sample of 75 public companies in(More)
The development of Internet generated the wave of E-Commerce, which can lead an expansion of IT industry. This paper focuses on the relationship between of ownership motivation and corporate performance in IT companies because the showing of low occupational stability of managers in IT industry. With an empirical research through all 99 IT companies from(More)
This paper mainly researches on the relationship between firm performance and the structure and levels of executive compensation. According to a statistic analysis of executive compensation of Chinese listed companies across industries, focused on an empirical analysis of firm performance and executive compensation of listed companies, the relationship(More)