Jaehwan John Lee

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Seventeen Ohio soybeans were screened for isoflavone content and antioxidant activity. Isoflavone content was determined by C(18) reversed phase high-performance liquid chromatography coupled with a photodiode array detector. Antioxidant activities of soybean extracts were measured using 2,2-diphenyl-1-picryl-hydrazyl (DPPH) free radical and(More)
Sophora japonica L. fruit prevents bone loss by inhibiting osteoclast activity. We hypothesized that S japonica L. extracts could promote osteoblast differentiation. To test this hypothesis, we investigated the effect of S japonica L. on osteoblast differentiation and identified the bioactive compound(s) from S japonica L. The mature fruit of S japonica L.(More)
In this demo, we present the StreamFitter system for real-time regression analysis on continuous data streams. In order to perform regression on data streams, it is necessary to continuously update the regression model parameters while receiving new data. In this demo, we will present two approaches for on-line, multi-dimensional linear regression analysis(More)
Recommendation systems are a popular marketing strategy for online service providers. These systems predict a customer's future preferences from the past behaviors of that customer and the other customers. Most of the popular online stores process millions of transactions per day; therefore, providing quick and quality recommendations using the large amount(More)
This article presents a novel Parallel Deadlock Detection Algorithm (PDDA) and its hardware implementation, Deadlock Detection Unit (DDU). PDDA uses simple Boolean representations of request, grant, and no activity so that the hardware implementation of PDDA becomes easier and operates faster. We prove the correctness of PDDA and that the DDU has a runtime(More)
Due to rapid technology advance, multiprocessor system-on-chips (MPSoCs) are likely to become commodity computing platforms for embedded applications. In the future, it is possible that an MPSoC is equipped with a large number of processing elements as well as on-chip resources. The management of these faces many challenges, among which deadlock is one of(More)
Numerous monitoring applications such as traffic control systems, border patrol monitoring, and person locater services generate a large number of multimedia data streams that need to be analyzed and processed using image processing and data stream management techniques in order to detect significant events of interest or abnormal conditions. Such(More)
Wearable strain sensors for human motion detection are being highlighted in various fields such as medical, entertainment and sports industry. In this paper, we propose a new type of stretchable strain sensor that can detect both tensile and compressive strains and can be fabricated by a very simple process. A silver nanoparticle (Ag NP) thin film patterned(More)
Three new scalarane-based sesterterpenes, 1- 3, were isolated from a marine sponge of the genus Spongia, and their chemical structures were elucidated by analysis of HRMS and 2-D NMR spectra. The isolated compounds 1 and 3 showed inhibition against the farnesoid X-activated receptor (FXR) with IC50 values of 2.4 and 24 microM, respectively. In particular,(More)