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울산 청년니트 지원사업의 효과에 관한 사례연구 : 참여자의 전환 경험을 중심으로
권기철(Kwon, Kichul),김채규(Kim, Chaegyu),구정화(Koo, Junghwa),김리강(Kim, Ri Gang),김민정(Kim, Minjung),김영희(Kim, Younghee),남재준(Nam, Jaejun),오미숙(Oh, Misuk),이지은(Lee, Jieun) 사회복지정책실천회 2022 사회복지정책과 실천 Vol.8 No.1
이 논문은 울산의 한 기관이 2019년부터 진행해온 청년니트 지원사업의 효과를 참여자의 전환 경험의 관점에서 파악하고자 한다. 이러한 분석을 통 해 청년니트 지원사업이 중점을 두어야 할 요소를 찾고, 이를 바탕으로 울산의 청년 니트 지원을 위한 정책 과제를 찾는 것을 목적으로 한다. 본 연구는 이 사업의 프로그램 내용과 사례자들의 기록을 검토하고, 이 사업을 실행한 사례관리자들과 이 사업의 지원대상인 니트 청년(대표 사례자 및 제2 사례 자 그룹)들과 인터뷰를 시행하였다. 사례자, 사례관리자, 비교그룹 등 3자에 대한 인터뷰와 그 분석 방법은 연구의 신뢰성과 타당성을 높이기 위해 삼각 검증(triangulation)을 통한 교차 검증이라고 할 수 있다. 인터뷰 내용을 분석 하기 위해 인터뷰 자료를 1차와 2차에 걸쳐 코딩을 하는 방법을 사용하였다. 분석 결과, 이 프로그램 참여자들 중 1명을 제외한 3명이 명시적으로 전환을 경험했으며, 그 계기로 상담자와의 상담과 사례관리자의 지지를 들었다. 이 런 사실은 사례관리자와 비교그룹과의 인터뷰에서도 확인되었다. 이 연구에 서 도출된 시사점은 다음과 같다. 첫째, 니트지원사업의 성공에는 사례관리 자의 역량과 열정이 중요하다. 둘째, 광역 및 기초지자체의 니트 사업에 대 한 정책 시행이 필요하다. 셋째, 니트 지원사업은 그 사업기간이 1년 이상의 장기여야 한다. This paper aims to understand the effectiveness of the youth NEET support project, which has been carried out by an institution in Ulsan since 2019. Through the analysis on the clients’ turning experience, it tries to find the key elements of youth NEET support project, and based on this, to find policy agendas for supporting youth NEET in Ulsan. This study reviewed the program contents of this project and the records of the clients, and conducted interviews with the clients(representative and second case groups) and case managers who executed this project. Interviews with three parties and the comparison and analysis of their records can be said to be cross-validation through triangulation to increase the reliability and validity of the study. In order to analyze the contents of the interview, the method of coding the interview data over the first and second rounds was used. We find three people among four experienced explicit turning, and find the causes of turning to be counseling with case managers and support from them. This fact was also confirmed in interviews with case managers and comparison groups. The implications derived from this study are as follows. First, the competence and passion of the case manager are important for the success of the NEET support project. Second, it is necessary to implement policies for NEET projects in metropolitan and basic local governments. Third, the NEET support project continues for long duration over one year.
Robust speaker recognition against background noise in an enhanced multi-condition domain
Kichul Kim,Moo Young Kim IEEE 2010 IEEE transactions on consumer electronics Vol.56 No.3
<P>In the midst of background noise environments, the performance of speaker recognition (SR) systems is considerably degraded. To estimate the model mismatch between training and evaluation data, we also propose an intra Kullback-Leibler distance (intra-KLD) measure. Based on the intra-KLD, the performance of SR systems using speech enhancement (SE) and multi-condition (MC) training can be predicted with reduced computational complexity. Since SE cannot fully remove real-world noise without modifying the clean speech signal, the SR model trained only with a clean speech signal cannot fully represent the evaluation data that include various noisy signals preprocessed by SE. To compensate for this problem, we apply SE as a preprocessing block not only for the evaluation stage, but for the training stage. Moreover, we propose to combine SE and MC training (SE-MC) where various sets of features are extracted in an SE domain and a model for each speaker is trained based on the mixture of SE-domain features. Under various background noise environments, SE, MC, and SE-MC produced SR error rates of 43.51%, 25.00%, and 20.29%, respectively.</P>
Kim, Daehwan,Kim, Hyewon,Kim, Kichul,Roh, Sangho Hindawi 2017 Oxidative medicine and cellular longevity Vol.2017 No.-
<P>Indole-3-acetic acid (IAA) is the most common plant hormone of the auxin class and is known to have many effects including cell proliferation enhancement and antioxidant property. However, no study has revealed its defensive effects against oxidative toxicity in human dental pulp stem cells (hDPSCs). In this study, we investigated the effects of IAA on hydrogen peroxide- (H<SUB>2</SUB>O<SUB>2</SUB>-) induced oxidative toxicity in hDPSCs. H<SUB>2</SUB>O<SUB>2</SUB>-induced cytotoxicity was attenuated after IAA treatment. Cell cycle analysis using FACS showed that the damaged cell cycle and increased number of apoptotic cells by H<SUB>2</SUB>O<SUB>2</SUB> treatment were recovered after the treatment of IAA. The H<SUB>2</SUB>O<SUB>2</SUB>-mediated increased expression of the proapoptotic genes, <I>BAX</I> and <I>p53</I>, was attenuated by IAA treatment, while IAA treatment increased antiapoptotic genes, <I>BCL-2</I> and <I>ATF5</I> expression. The increases of cleaved caspase-3 and ROS by H<SUB>2</SUB>O<SUB>2</SUB> were also decreased after treatment of IAA. To further investigate the mechanism of IAA, Nrf2-related antioxidant pathway was examined and the results showed that the level of Nrf2 and HO-1 expressions, stimulated by H<SUB>2</SUB>O<SUB>2,</SUB> decreased after treatment of IAA. Moreover, IAA treatment protected hDPSCs against H<SUB>2</SUB>O<SUB>2</SUB>-induced oxidative stress via increased expression of Nrf2 and HO-1, mediated by the AKT pathway.</P>
Reliability and Validity of the Korean Version of the Gout Impact Scale
Kim Min Jung,Kim Ju Yeon,Lee Jennifer Jooha,Moon Ki Won,Shin Kichul 대한의학회 2023 Journal of Korean medical science Vol.38 No.35
Background: The Gout Impact Scale (GIS), part of the Gout Assessment Questionnaire 2.0, measures gout-specific health-related quality of life (HRQOL). This study aimed to translate the GIS into Korean and validate the Korean version (K-GIS) using generic HRQOL measures. Methods: The GIS was translated into Korean and back-translated into English. We asked patients aged 18 years or older who met the 2015 gout classification criteria to fill out the questionnaires (from January 2022 to June 2022); the K-GIS (5 scales [0–100 scores each]), along with the Korean version of Health Assessment Questionnaire (HAQ) and EuroQol-5 dimension (EQ-5D). We investigated the internal consistency, construct validity, and discriminative validity for gout characteristics of K-GIS. The K-GIS form was administrated to patients 4 weeks later to assess the test-retest reliability using the intraclass correlation coefficient (ICC). Results: One hundred patients completed the questionnaire. The mean ± standard deviation age of the patients was 53.0 ± 15.1 years, and 99.0% of the patients were men. All scales had high degree of internal consistency (Cronbach’s α = 0.59 to 0.96) and test-retest reliability (n = 18, ICC = 0.83 to 0.94, all P < 0.001), except for unmet gout treatment needs. Weak-tomoderate correlations were observed between the K-GIS scales and HAQ or EQ-5D (r = 0.21 to 0.46). The K-GIS scores were significantly higher in the presence of bone erosion, absence of urate-lowering therapy, serum urate levels > 6 mg/dL, frequent gout flares in the past year, and fewer comorbidities. In contrast, neither the HAQ nor the EQ-5D could discern these subsets of patients. Conclusion: The K-GIS is a reliable and valid HRQOL measure for patients with gout. Higher K-GIS scores were associated with clinical characteristics leading to unfavorable outcomes, which were not demonstrated by the HAQ and EQ-5D.
Kim Min Jung,Ryu Borim,Park Eun-Gee,Yi Siyeon,Kim Kwangsoo,Park Jun Won,Shin Kichul 대한의학회 2024 Journal of Korean medical science Vol.39 No.4
This retrospective cohort study aimed to compare coronavirus disease 2019 (COVID-19)- related clinical outcomes between patients with and without gout. Electronic health recordbased data from two centers (Seoul National University Hospital [SNUH] and Boramae Medical Center [BMC]), from January 2021 to April 2022, were mapped to a common data model. Patients with and without gout were matched using a large-scale propensityscore algorithm based on population-level estimation methods. At the SNUH, the risk for COVID-19 diagnosis was not significantly different between patients with and without gout (hazard ratio [HR], 1.07; 95% confidence interval [CI], 0.59–1.84). Within 30 days after COVID-19 diagnosis, no significant difference was observed in terms of hospitalization (HR, 0.57; 95% CI, 0.03–3.90), severe outcomes (HR, 2.90; 95% CI, 0.54–13.71), or mortality (HR, 1.35; 95% CI, 0.06–16.24). Similar results were obtained from the BMC database, suggesting that gout does not increase the risk for COVID-19 diagnosis or severe outcomes.
Robust query-by-singing/humming system against background noise environments
Kim, Kichul,Park, Kang Ryoung,Park, Sung-Joo,Lee, Soek-Pil,Kim, Moo Young IEEE 2011 IEEE TRANSACTIONS ON CONSUMER ELECTRONICS - Vol.57 No.2
<P>Under background noise environments, the performance of the Query-by-Singing/Humming (QbSH) system is considerably degraded. Since human pitch information is used as a feature vector for the QbSH system, a noise robust pitch estimation algorithm is inevitable. Thus, a novel pitch-estimation method is proposed by integrating temporal-autocorrelation and spectral-salience methods. As a pre-processing block, spectral smoothing is applied to enhance the stationarity of the noisy input signal. To calculate the similarity between the MIDI database and input humming signal, the dynamic time warping (DTW) algorithm is used. Jang's corpus and AURORA2 database are selected as humming and background noise signals, respectively. Compared with the standard pitch estimation algorithm in the ITU-T G.729 speech codec, the proposed pitch estimation method improves the average accuracy by 11.7% for the 0 dB signal-to-noise ratio (SNR) noise case. It also improves top-20 ratio and mean reciprocal rank (MRR) of the proposed QbSH system, on average, by 7.4% and 0.13, respectively.</P>