Sungjae Lee

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This paper describes saturation attacks on reduced-round versions of Skipjack. To begin with, we will show how to construct a 16-round distinguisher which distinguishes 16 rounds of Skipjack from a random permutation. The distinguisher is used to attack on 18(5∼22) and 23(5∼27) rounds of Skipjack. We can also construct a 20-round distinguisher based on the(More)
OBJECTIVE Some patients with schizophrenia may need mirtazapine augmentation to improve negative and cognitive symptoms. However there have been a few studies about the tolerability of mirtazapine augmentation to antipsychotics such as akathisia, extrapyramydal symptoms, weight gain, and body mass index (BMI). METHODS This study was an eight-week(More)
BACKGROUND Panic disorder (PD) is associated with an increased risk of suicide attempt (SA). However, no study has examined the neural correlates of SA in PD. The goal of this study was to evaluate alterations in white matter (WM) and gray matter (GM) in patients with PD with and without a history of SA. METHODS Twelve patients with PD and a history of SA(More)
This paper reviews the status and challenges of the modeling Partially-Depleted Silicon-On-Insulator transistors. Many challenges stem from the floating-body potential, which offers advantages in terms of performance and leakage, but presents complex electrical behavior. Circuit simulator considerations and the importance of model standardization are also(More)
We present record-performance RF devices and circuits for an SOI CMOS technology, at 35nm L poly. Critical RF/analog figure of merits in FET such as current gain cutoff frequency (f T), 1/f noise, and high-frequency noise figure at various bias and temperature conditions are measured and modeled to enable high-performance circuit design. Measurement results(More)
BACKGROUND To evaluate the diagnostic performance of radiology residents' interpretations for diffusion-weighted MR imaging (DWI) in the emergency department at different levels of residency training. METHOD AND MATERIALS A total of 160 patients who underwent DWI with acute neurologic symptoms were included in this retrospective study with an(More)