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Minha Hong,Kyung-Sook Lee,Jin-Ah Park,Ji-Yeon Kang,Yong Woo Shin,Young Il Cho,Duk-Soo Moon,Seongwoo Cho,Ram Hwangbo,Seung Yup Lee,Geon Ho Bahn 대한소아청소년정신의학회 2022 소아청소년정신의학 Vol.33 No.1
Objectives: Early detection of developmental issues in infants and necessary intervention are important. To identify the comorbid conditions, a comprehensive evaluation is required. The study’s objectives were to 1) generate scale items by identifying and eliciting concepts relevant to young children (12–71 months) with developmental delays, 2) develop a comprehensive screening tool for developmental delay and comorbid conditions, and 3) assess the tool’s validity and cut-off. Methods: Multidisciplinary experts devised the “Infant Comprehensive Evaluation for Neurodevelopmental Delay (ICEND),” an assessment method that comes in two versions depending on the age of the child: 12–36 months and 37–71 months, through monthly seminars and focused group interviews. The ICEND is composed of three parts: risk factors, resilience factors, and clinical scales. In parts 1 and 2, there were 41 caretakers responded to the questionnaires. Part 3 involved clinicians evaluating ten subscales using 98 and 114 questionnaires for younger and older versions, respectively. The Child Behavior Checklist, Strengths and Difficulties Questionnaire, Infant-Toddler Social Emotional Assessment, and Korean Developmental Screening Test for Infants and Children were employed to analyze concurrent validity with the ICEND. The analyses were performed on both typical and high-risk infants to identify concurrent validity, reliability, and cut-off scores. Results: A total of 296 people participated in the study, with 57 of them being high-risk (19.2%). The Cronbach’s alpha was positive (0.533–0.928). In the majority of domains, the ICEND demonstrated a fair discriminatory ability, with a sensitivity of 0.5–0.7 and specificity 0.7–0.9. Conclusion: The ICEND is reliable and valid, indicating its potential as an auxiliary tool for assessing neurodevelopmental delay and comorbid conditions in children aged 12–36 months and 37–71 months.
Cho, Seong Woo,Lee, Yeon Jung,Lee, Seong Ae,Hong, Minha,Lee, Sang Min,Park, Jin Cheol,Bahn, Geon Ho Korean Academy of Child and Adolescent Psychiatry 2017 소아청소년정신의학 Vol.26 No.1
Objectives: The study aimed to identify the characteristics of attention-deficit hyperactivity disorder (ADHD) that was not diagnosed in childhood or adolescence, but only in adulthood. Methods: The characteristics of patients diagnosed with ADHD in adulthood were compared with those of patients diagnosed in childhood were assessed via a retrospective review of the medical records at one university hospital from 2005 to 2013. If the age at which they were confirmed as having ADHD was less than 19 years old, they were grouped as childhood-diagnosed group (CD); if they were 19 years old or more, they were grouped as adulthood-diagnosed group (AD). Results: The CD and AD included 50 (46.3%) and 58 (53.7%) patients, respectively. Inattention was the most common symptom in both groups. Behavioral and emotional problems were the second most frequent symptoms in the CD and AD, respectively. The intelligent quotient was significantly higher in the AD than in the CD. The most common comorbidity was depression in the CD and personality disorder in the AD. The most common reason for visiting the hospital was referral by acquaintances in the CD and media coverage in the AD. Conclusion: Clinicians should put ADHD on the index of suspicion when they examine adults with various psychiatric symptoms, because the diagnosis of ADHD might have been missed in childhood and the symptoms of ADHD might have changed as they grew up.
Cho, Eunsang,Zhang, Aoqi,Choi, Minha Chinese Geoscience Union 2016 TAO Vol.27 No.6
<P>This study focuses on the seasonal differences in soil moisture patterns considering the impact of meteorological variables (air/ground temperature, precipitation, and the amount of insolation) on soil moisture variability over the Korean peninsula between January 2012 and February 2013. We found that soil moisture spatial distributions changed differently with the mean soil moisture content according to the season using statistical metrics (skewness and kurtosis) (summer: 1 June to 31 August, winter: 1 November to 31 January). Daily variations in meteorological variables had different relationships with the changes in soil moisture for two seasons. Air and soil temperature changes clearly had negative relationships with the soil moisture change during the summer period while they had positive relationships during the winter period. Temporal stability testing showed that the representative soil moisture sites on a regional scale could be changed with seasonal periods, especially in the Asian monsoon region. In conclusion, these results provide evidence that there are clear differences in soil moisture patterns according to seasonal characteristics. This study might be useful for further researches relating to climate-meteorological effects on soil moisture patterns on a regional scale.</P>
Does AMSR2 produce better soil moisture retrievals than AMSR-E over Australia?
Cho, Eunsang,Su, Chun-Hsu,Ryu, Dongryeol,Kim, Hyunglok,Choi, Minha Elsevier 2017 Remote sensing of environment Vol.188 No.-
<P><B>Abstract</B></P> <P>The Advanced Microwave Scanning Radiometer 2 (AMSR2), a follow-up microwave sensor to the AMSR for Earth Observing System (AMSR-E), was launched on the Global Change Observation Mission 1 – Water (GCOM-W1) satellite in May 2012. It is as yet unclear if instrumental improvements in AMSR2 over AMSR-E have led to better soil moisture (SM) estimates, especially since there is no overlapping period of data between the sensors. This study focuses on comparing the results of AMSR2 and AMSR-E SM over Australia, distinguishing four Köppen climate zones to determine if AMSR2 is better than AMSR-E. This is achieved by selecting two year-long comparative time periods from the operating periods of AMSR-E and AMSR2, based on their statistical similarities in modeled SM as a proxy, using Modern Era Retrospective-analysis for Research and Applications-Land (MERRA-L). The AMSR2 and AMSR-E C- and X-band SM derived from the Land Parameter Retrieval Model (LPRM) was evaluated. Both AMSR2 C- and X-band SM products were found to show similar temporal patterns and spatial agreement with AMSR-E C- and X-band SM, supported by unbiased root mean square difference (ubRMSD) and R-values with MERRA-L SM, respectively. Using lag-based instrumental variable analysis to estimate the random error component of SM retrievals, the noise-to-signal ratios in AMSR2 X-band SM were found to be slightly higher than their AMSR-E counterparts. The improvements in AMSR2, such as the superior radiometric sensitivity and spatial resolution, have therefore not led to statistically significant differences in performance for LPRM retrievals at 1/2°×1/2° grid resolution, when compared with AMSR-E. However, similarities in the metrics for AMSR2 and AMSR-E SM suggest that AMSR2 provides a valuable continuation to AMSR-E.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Revised the manuscript to reflect several specific comments carefully </LI> <LI> Clearly improved in textual and structural things </LI> <LI> Proofread thoroughly by a native English colleague </LI> </UL> </P>
IEEE P145.5 표준을 적용한 무선 센서 인터페이스 구조의 구현
금민하,김진상,조원경 경희-다반 ASIC 설계교육센터 2007 경희-다반 ASIC센터 논문집 Vol.8 No.-
This paper describes an implementation of the Network Capable Application Processor (NCAP) and the Wireless Transducer Interface Module (WTIM) architectures based on the new IEEE P1451.5 standard, Proposed architecture is implemented using a computer for NCAP, an FPGA board, a sensor board and two radio modules, which communicate through the ZigBee wireless communication technology between the NCAP and the WTIM using the IEEE P1451.0 and the IEEE P1451.5 interfaces, In this paper, two experiments has been done to verify operation of proposed architecture. Thc first experiment was performed to read the Meta TEDS. The second experiment was performed to read two sensors data according to the standard. From the experimental results, we verify that the proposed architecture performs the wireless sensor interface standard functions efficiently.
재구성 가능한 coprocessor의 controll processor 설계
금민하,김남섭,조원경,김진상 경희-다반 ASIC 설계교육센터 2006 경희-다반 ASIC센터 논문집 Vol.7 No.-
멀티미디어 무선단말기는 다양한 알고리즘의 고속 연산 및 많은 양의 데이터 처리 때문에 기존의 프로세서를 사용한 방법으로는 처리 용량에 한계가 있다. 또한 별도의 전용 ASIC 칩을 이용한 시스템은 프로그래밍 능력이 떨어지며, 경우에 따라 많은 수의 칩으로 구성되어 하드웨어 비용 및 소비전력이 증가한다. 이와 같은 문계점은 재구성 가능한 Co-processor를 이용하여 해결할 수 있다. DA(Distfbuted Arithmetic) 구조의 곱셈기가 없는 새로운 동적 재구성 가능한 하드웨어 구조를 제안하고, 제안된 하드웨어를 제어하기 위한 16비트 프로세서 및 어셈블리어를 기계어로 변환하는 어셈블러를 구현하였다. 간단한 알고리즘을 이용하여 16비트 프로세서의 동작여부를 확인하고, 전체 구조에 행렬의 곱셈을 효과적으로 적용 시켰다.
비정질 IGZO재료의 결정화도 Clustering 연구
황민하(Minha Hwang),조성준(Sungzoon Cho) 대한전자공학회 2021 대한전자공학회 학술대회 Vol.2021 No.6
In this paper, we propose a method to quantify the crystallization properties of IGZO thin films, which are amorphous materials. A large amount of image information was processed using 4D-STEM, the most advanced technology for observing the current atom, and crystallization characteristics were compared through the FEM measurement method. As a result, the degree of crystallization of amorphous materials was compared through the first peak of radial variance, and clusters were automatically classified through the SOM method, which is one of unsupervised learning.