Tong Zhang

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Our objective is to determine if a first-price auction or a posted-price market provides a seller with the larger expected revenue when buyers have a common value for the item being sold. An agent-based, posted-price market and an agent-based, first-price common-value auction with a reserve price are developed to compare these selling methods. When the(More)
The Publisher and Editor retract this article in accordance with the recommendations of the Committee on Publica tion Ethics (COPE). After a thorough investigation we have strong reason to believe that the peer review process was compromised.
The GIS web portal usually functions as a web-based gateway to integrated and distributed geographic resources. Although current GIS web portals are gaining popularity among GIS users and are of great significance for building distributed Internet GIS, they remain weak in terms of analytical and modeling components. We discuss the possibilities of(More)
BACKGROUND Growth-arrest-specific 2 gene was originally identified in murine fibroblasts under growth arrest conditions. Furthermore, serum stimulation of quiescent, non-dividing cells leads to the down-regulation of gas2 and results in re-entry into the cell cycle. Cytoskeleton rearrangements are critical for cell cycle progression and cell division and(More)
As a consequence of years of study, geographic Cellular Automata (Geo-CA) models have become far more complex than the original basic CA concepts. In many Geo-CA applications, calibration processes are needed to determine the appropriate model parameter values so that CA models can produce more realistic simulation results. For a multi-parameter Geo-CA(More)
Microtubule-actin interactions are fundamental to many cellular processes such as cytokinesis and cellular locomotion. Investigating the mechanism of microtubule-actin interactions is the key to understand the cellular morphogenesis and related pathological processes. The abundance and highly dynamic nature of microtubules and F-actin raise a serious(More)
Pancreatic cancer is a uniformly lethal disease that can be difficult to diagnose at its early stage. Thus, our present study aimed to explore the underlying mechanism and identify new targets for this disease. The data GSE16515, including 36 tumor and 16 normal samples were available from Gene Expression Omnibus. Differentially expressed genes (DEGs) were(More)
The Publisher and Editor retract this article in accordance with the recommendations of the Committee on Publica tion Ethics (COPE). After a thorough investigation we have strong reason to believe that the peer review process was compromised.