Jae-Young Jang

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In this paper we present the tearing paradigm as a way to automatically abstract behavior to obtain upper and lower bound approximations of a reactive system. We present algorithms that exploit the bounds to perform conservative ECTL and ACTL model checking. We also give an algorithm for false negative (or false positive) resolution for verification based(More)
Interleukin-1B and IL-1 receptor antagonist gene polymorphisms are associated with an increased risk of gastric cancer (GC) in Caucasian populations. However, recent studies could not find any association between IL-1B-511T polymorphism and the risk of GC in Asians. We tested for an association between IL-1 loci polymorphisms with increased gastric mucosal(More)
BACKGROUND & AIMS The generation of oxidative stress and transforming growth factor beta1 (TGF-beta1) production play important roles in liver fibrogenesis. We have previously shown that hepatitis C virus (HCV) increases hepatocyte TGF-beta1 expression. However, the mechanisms by which this induction occurs have not been well studied. We explored the(More)
BACKGROUND & AIMS X-linked inhibitor of apoptosis protein-associated factor 1 (XAF1) is a candidate tumor suppressor located at the chromosome 17p13 region, but the molecular basis underlying its inactivation in human tumors and growth-inhibiting function has not been well defined. We explored the candidacy of XAF1 as a suppressor in colorectal(More)
RDCS (Reachability Don’t Cares) can have a dramatic impact on the cost of ~ model checking [18]. Unfortunately, RDCS, being a global property, are often much more difficult to compute than the satisfying set of typical CTL formulas. We address this problem through the use of Approximate Reachabili~ Don’t Cares (ARDCS), computd with the algorithms developed(More)
A 5 year-old, intact female Yorkshire terrier was referred for dysuria and dyschezia. The radiographic and ultrasound examination showed a round shaped mass caudal to the urinary bladder that contained anechoic fluid within the thin walls. During surgery, the cyst was noted to be attached to the outer wall of the vagina, not connected to the vaginal lumen.(More)
OBJECTIVE The aim of this study was to evaluate the prevalence of Barrett's esophagus (BE) in the general Korean population by evaluating screening esophagogastroduodenoscopy. In addition, the risk factors for BE were identified. METHOD An esophagogastroduodenoscopy examination was performed in 25,536 subjects who had upper endoscopy screening from(More)
We present our experiences with the formal verification of an automotivechip used to control the safety features in a car. We useda BDD based model checker in our work. We describe our verificationmethodology for verifying a very complicated property on arelatively large design. We also describe the bugs that were foundand present our views on how to make(More)
Despite the remarkable progress recently made to enhance the resolution of white-light endoscopy, detection, and diagnosis of premalignant lesions, such as adenomas and subtle early-stage cancers, remains a great challenge. As for example, although chromoendoscopy, such as endoscopy using indigo carmine, is useful for the early diagnosis of subtle lesions,(More)