박승진 교수

This paper presents a 100 kS/s, 1.3 μW, 9.3 ENOB successive approximation ADC with a time-domain comparator. The proposed time-domain comparator utilizes a differential multi-stage VCDL, resulting in a highly digital operation eliminating static power consumption. The effects of gain, noise, and offset are also investigated by detailed analysis which proves the feature of reducing the input-referred noise and offset by simply increasing the number of delay stages. For verification, the proposed

Cyst aspiration and GKR were feasible and safe but not very efficient, which could be an alternative option for large cystic metastases in patients who could not expect longer survival time.

대학생 우울성향 집단을 성취 지향적 우울집단과 관계 지향적 우울집단으로 구분하여, 두 집단은 명시적 자존감에서는 유의미한 차이를 나타내지 않지만 암묵적 자존감에 있어서는 성취 지향적 우울성향집단이 더 낮을 것이라는 가설을 검증하였다. 연구 1에서는 대학생 391명을 대상으로 BDI와 성격양식질문지(PSI-Ⅱ), 암묵적 자존감 측정치의 하나인 이름철자 및 생일숫자 선호 검사(IBPT)와 명시적 자존감 측정치인 로젠버그 자존감 척도(RSES)를 이용하여 성취 지향적 우울집단과 관계 지향적 우울집단의 암묵적 자존감과 명시적 자존감의 차이를 검증하였다. 그 결과, 성취 지향적 우울집단은 명시적 자존감 수준에서는 관계 지향적 우울집단과 유의미한 차이가 없지만, 암묵적 자존감은 더 낮은 것으로 나타났다. 연구 2의 목적은 또 다른 암묵적 자존감 측정치인 암묵적 연합 검사(IAT)를 이용하여 연구 1의 결과를 반복 검증하는 것이었다. 성취 지향적 우울집단 13명, 관계 지향적 우울집단 14명,

Objective : To translate Center for Epidemiologic Studies Depression Scale (CES-D) into North Korean language and to examine its reliability and validity. Methods : North Korean defectors (n=207) recruited from the call center for North Korean defectors par- ticipated. Psychiatrists and psychiatric residents interviewed the participants and made the psychiatric diag- noses. Subsequently, the participants completed the CES-D, Impact of Event-Scale-Revised-North Korea (IES-R-NK), Alcohol Use Disor

Abstract Content based image retrieval (CBIR) is used to retrieve digital images from large databases. However, the problem of retrieving images on the basis of the contents remains largely unsolved. The proposed method of image retrieval is based on the information provided by histogram analysis of the intensity or grayscale values of images. Some additional properties are also calculated and used that are based on regional characteristics of various objects in the image. The need to retrieve t

A transistor-based background on-chip self-calibration technique is proposed to obtain PVT-independent circuit parameters. With little implementation complexity, the proposed direct I-V calibration of performance determining transistors efficiently achieves stable operation of precision circuits. As an example application to a design of a PLL, the calibration scheme adjusts critical parameters such as VCO gain and charge-pump current to achieve adaptive bandwidth characteristics. The PLL, implem

Background: Smoking is universally recognized as the foremost preventable cause of cancer. And smoking behavior causes many negative effects in cancer patients. Based on the mounting evidence that smoking affects cancer treatment outcomes and survival, we studied whether the cancer diagnosis affects smoking behavior. Methods: During August 2007, 279 patients who were hospitalized with the diagnosis of cancer were surveyed by a questionnaire and a follow up survey was performed at 3 months and 7

Recent advances in synchrotron-based X-ray analysis have become pivotal in addressing the multifaceted challenges posed by novel energy materials used in rechargeable battery systems, such as those employed in electric vehicles and large-scale grid storage. Among them, X-ray spectromicroscopy and ptychography, with their high spatial resolution, are essential for exploring the intricate microstructures and complex chemical compositions of battery electrodes, leading to optimized performance and

대학생 우울성향 집단을 대상으로 미래 사고 과제(future thinking task)로 측정한 긍정적 미래 사고의 부족이 부정적 미래 사고, 우울 및무망감과는 독립적으로 자살사고에 고유한 영향을 미칠 것이라는 가설을 검증하였다. 또한 긍정적 미래 사고의 내용, 구체성 및 범주의 다양성이 자살사고와 어떠한 관련을 맺는지 탐색하고자 하였다. 우울성향 대학생 64명을 대상으로 사전에 우울척도인 CES-D, 벡 절망 척도(K-BHS)와 자살사고 척도(SIQ)에 응답하게 했다. 미래 사고 과제를 실시한 후 본인이 보고한 미래의 긍정적 경험 중 3가지를 골라 구체적으로 적도록 지시하였다. 긍정적 미래 사고의 정도는 부정적 미래 사고와 유의한 정적 상관을 나타냈지만, 우울, 무망감 및 자살사고와는유의한 부적 상관을 보였다. 또한, 긍정적 미래 사고는 부정적 미래 사고, 우울 및 무망감을 통제한 뒤에도 자살사고에 독립적으로 영향을미쳤다. 긍정적 미래 사고의 내용 중 대인관계 영역은 자살사고와 유

The increasing suicide rate is a serious problem in Korea. Because of increased awareness of suicidality as a problem and because completed suicide is the fourth leading cause of death, it is very important to assess the risk of suicide. The purpose of this review is to provide a systematic examination of predictive validity of measures of suicidal ideation and behavior. A number of instruments are described as useful for identifying individuals “at high risk” for suicidal behavior. However, the