TinyOS  is an open-source operating system, using Component Description Language NesC for development. TinyOS is designed mostly for wireless sensor network, in which nodes have very limited resources. A representative scheduling mechanism in TinyOS is analyzed and its shortcomings are listed in this paper. An improved design of the priority-based… (More)
As e-commerce is playing a more and more important role in our daily life, there is no wonder that significant attention is being focused on the evaluation of e-commerce Web sites in recent years. In this paper, a fuzzy analytic hierarchy process (FAHP) approach is used to evaluating e-commerce Web sites, which can tolerate vagueness and uncertainty of… (More)
H3K9me3 histone demethylase, is involved in the maintenance of human ESCC-initiating cells by epigenetically enhancing SOX2 expression "
Our studies investigating the existence of tumor-initiating cell (TIC) populations in human esophageal squamous cell carcinoma (ESCC) had identified a subpopulation of cells isolated from ESCC patient-derived tumor specimens marked by an ALDH(bri+) phenotype bear stem cell-like features. Importantly, KDM4C, a histone demethylase was enhanced in ALDH(bri+)… (More)
Implanting pieces of tissue or scaffolding material into the mammalian central nervous system (CNS) is wrought with difficulties surrounding the size of tools needed to conduct such implants and the ability to maintain the orientation and integrity of the constructs during and after their transplantation. Here, novel technology has been developed that… (More)
Ubiquitous is a Latin-derived word meaning "to exist at any time and place" likes water or air. In computing, the word "ubiquitous" indicates an environment in which users have access to networks without any limitation regarding computers, networks or places. Important issues in building Ubiquitous Korea (U-Korea) are the social problems appearing with a… (More)