CAD System for Financial Derivative Design

Hayong Shin(신하용),Wanmo Kang(강완모),Taehyuk Park(박태혁),Hyung-Il Moon(문형일) 한국경영과학회 2010 한국경영과학회 학술대회논문집 Vol.2010 No.10

Identifying the Growth Trends of Traditional Commerce vs E-Commerce Using LSTM Networks

Hayong Choung 한국정보과학회 2020 한국정보과학회 학술발표논문집 Vol.2020 No.7

Differential Expression of Flowering Genes between Rapid- and Slow-Cycling Brassica rapa

( Hayong Song ),( Xiangshu Dong ),( Hankuil Yi ),( Ill Sup Nou ),( Yoonkang Hur ) 한국육종학회 2016 Plant Breeding and Biotechnology Vol.4 No.2

Flowering time is a very important agronomic trait in Brassica crops and regulation of the time is one of major factor in the breeding program. To understand the control of flowering time in Brassica rapa, we have carried out Br300K microarray with two contrasting Brassica inbred lines, Rapid Cycling B. rapa (RCBr) as rapid cycling type and B. rapa ssp. pekinensis inbred line Chiifu as slow flowering phenotype. Reproductive process-related genes were specifically expressed in RCBr, whereas environmental stimuli-responsive genes in Chiifu. Flowering stimulating genes, such as BrFT and BrSOC1, were preferentially expressed in RCBr, while flowering repressing genes, such as BrFLC and BrMAF4, expressed in Chiifu. Several paralogues present in B. rapa, BrFLCs and BrCOLs, were expressed with paralog-specific pattern depending on flowering phenotypes: i.e., BrFLC1 and BrFLC2, major floral repressors, were expressed in Chiifu, BrFLCL/BrFLC5 in RCBr and BrFLC3 in both plants. The expression of several flowering repressing genes was gradually decreased in RCBr growth, but increased in Chiifu growth. However, the expression of genes involved in photoperiodic flowering was no difference between these two plants under LD and SD conditions, indicating photoperiodic pathway is not major factor to distinguish fast vs. slow flowering in B. rapa. The mechanism underlined in the rapid or fast flowering of RCBr would be further elucidated in association with the controlling mechanism of its short life span.

The preliminary checklist of the subfamily Herminiinae (Lepidoptera: Erebidae) in Korea

Hayong Choi,Ji-Young Lee,Junbum Park,Soyeon Lim,Jin Yu,Bong-Kyu Byun 한국응용곤충학회 2023 한국응용곤충학회 학술대회논문집 Vol.2023 No.04

Exact and Interference-free Beveled Offset of Triangular Meshes

Hayong Shin,I. L. Yi (사)한국CDE학회 2010 한국CAD/CAM학회 국제학술발표 논문집 Vol.2010 No.8

Implementation of PKI Based Certificate Using on a Java Card

Hayong Jeon,Sewon Oh,Minsoo Jung 한국멀티미디어학회 2008 한국멀티미디어학회 국제학술대회 Vol.2008 No.-

In most cases, PKI based public certificates were usually saved on a PC or USB memory. However, Certificates are saved on a PC or USB memory, they are likely to be used for a malicious purpose such as hacking. A HSM refers to certificate related applications saved on a chip similar to a smart card. Use of the chip has strengthened its security features, but it has a major shortcoming that may not store other applications on a HSM manufactured by a certain vendor. In this paper, we have designed a system that implements the functions of the HSM on a JavaCard where various application can be stored.

첨족 변형을 지닌 뇌성마비 환자의 보행 중 비복근과 가자미근의 길이 변화

김하용(Hayong Kim),안재훈(Jae Hoon Ahn),이항호(Hang Ho Lee),구제윤(Jea Yun Koo),이한철(Han Cherl Yee),최원식(Won Sik Choy) 대한정형외과학회 2009 대한정형외과학회지 Vol.44 No.2

목적: 첨족 변형을 가진 뇌성마비 환자의 보행 도중 비복근과 가자미근의 길이 변화를 측정하고자 하였다. 대상 및 방법: 환자군은 첨족 변형을 가진 뇌성마비 환자로 수술 전과 후에 보행 검사를 시행한 12명, 17하지로 하였으며, 대조군은 정상 성인 12명, 24 하지로 하였다. 환자군은 11명이 남자였으며, 평균 연령은 14.3세(5-25세)였으며 평균 추시기간은 15.3개월(12.5-18.5개월)이었다. 수술 방법에 따라 Strayer군과 TAL군으로 분류하였으며, 보행 검사와 SIMM을 연동하여 보행 중 비복근과 가자미근의 길이 변화를 측정하였다. 결과: 수술 후 족관절 및 슬관절의 운동형상학은 호전되었고, 보행 도중 측정된 근육의 길이도 연장되었다. 아킬레스건 연장술과 Strayer 술식 후 수술 전ㆍ후 비복근과 가자미근 길이 변화 사이에는 통계적으로 유의한 차이가 있었다. Strayer 술식 후에 보행 도중 가자미근의 근육 길이도 연장되었다. 결론: 환자군에서 SIMM을 이용하여 보행 도중 하퇴 삼두근의 길이 변화를 측정하여, 수술 후 구축된 하퇴 삼두근이 연장되었음을 정량적으로 확인할 수 있었다. Purpose: To measure the muscle length of the gastrocnemius and soleus during gait in CP patients with an equinus deformity before and after surgery. Materials and Methods: Twelve CP patients with an equinus deformity (17 limbs) were examined by gait analysis preoperatively and postoperatively. The patient group was further classified into the TAL and Strayer group according to the surgical technique. The mean age and mean follow-up periods were 14.3 years (5-25 years) and 15.3 months (12.5-18.5 months), respectively. The muscle length of the Gastrocnemius and Soleus was measured during gait using the SIMM program linked to a gait analysis system. Results: The ankle ROM, knee ROM, maximal muscle length and peak-to-peak excursion during gait improved after surgery. There was a significant difference between the preoperative and postoperative measurements (p<0.05), but no difference between the postoperative and control groups (p>0.05). The muscle length of the soleus was elongated during gait after the Strayer procedure. Conclusion: Patients with an equinus deformity had a contracted triceps muscle, which was elongated after surgery. These changes were quantified by a comparison of the preoperative and postoperative measurements.

소아 경골 간부 골절 후 발생하는 과성장

김하용(Hayong Kim),나규현(Kyu Hyun Na),고준혁(Joon Hyuk Ko),김갑중(Kap Jung Kim),안재훈(Jae Hoon Ahn),최원식(Won Sik Choi) 대한정형외과학회 2006 대한정형외과학회지 Vol.41 No.2

목적: 소아 경골 간부 골절 후 하지 4 장골의 상대적 성장을 측정하고, 이에 영향을 미치는 요인을 분석하고자 하였다. 대상 및 방법: 소아 경골 간부 골절 환자 중 도수 정복 후 장하지 석고 붕대 고정으로 치료받았던 38예의 의무 기록과 Bell-Thmpson 사진을 후향적으로 분석하였다. 평균 추시 기간은 54.4개월(24-96개월)이었다. 결과: 전예에서 임상적으로는 우수하였다. 환측 경골의 과성장은 4.4±3.3 ㎜이었다. 환측 대퇴골은 평균 0.9±3.7 ㎜의 과성장을 보였다. 전체적으로 환측 하지는 5.3±5.4 ㎜의 과성장을 보였다. 성별, 골절 부위와 비골 골절 유무는 과성장에 유의한 영향을 미치지 않았다. 수상 당시 연령은 통계적으로 유의하게 과성장에 영향을 주었다. 4예에서 환측 대퇴골이 10 ㎜ 이상의 과성장을 보였다. 결론: 소아의 하지 장골은, 경골 골절로 치료 받은 후, 다양한 성장을 보였다. 최종 하지 길이의 치는 골절된 경골뿐 아니라, 환측 대퇴골의 과성장도 관여한다고 생각된다. Purpose: To assess the comparative growth of the four long bones of the lower extremities after the tibial shaft fractures in children. Materials and Methods: Thirty-eight children (age, 8.2±2.6) with tibial shaft fractures treated with a closed reduction and a long leg cast were enrolled in this study. The mean follow-up was 54.4 months (range, 24-96). The medical records and Bell-Thompson images were retrospectively reviewed. Results: The clinical results were excellent in all cases. The fractured tibia showed overgrowth (4.4±3.3 ㎜) compared with the contralateral side. The ipsilateral femur showed mild over-growth (0.9 ㎜±3.7), and the final leg length discrepancy was 5.3 ㎜±5.4. Four ipsilateral femurs showed overgrowth > 10 ㎜. Gender, the level of the fractures and associated fibular fractures did not affect the overgrowth of the fractured tibia (p>0.05). However, age might affect the amount of overgrowth (p=0.005). Conclusion: Tibial shaft fractures in children treated with a long leg cast showed variable overgrowth. The final leg length discrepancy was influenced by the overgrowth of the ipsilateral femur as well as by overgrowth of the tibia.

CMOS 0.18㎛ 공정을 이용한 Active Inductor Load를 가지는 3-5㎓ UWB LNA 설계

정하용(HaYong Jung),채성호(SungHo Chai),정진호(Jinho Jeong),박찬형(Chan Hyeong Park) 대한전자공학회 2007 대한전자공학회 학술대회 Vol.2007 No.11

This paper presents an ultra-wideband (UWB) CMOS low noise amplifier (LNA) topology that operates in 3-5 ㎓ band. The common gate structure provides wideband input matching and flattens the passband gain. The proposed UWB amplifier is implemented in 0.18 ㎛ CMOS technology for lower band operation mode. Simulation shows a minimum noise figure of 3.5 ㏈, a power gain of 15 ㏈, less-than -10 ㏈ of input and output matching, with a power consumption of 24.4 ㎽.

Flow-R 모형을 이용한 소규모 저수지 파괴에 따른 하류 침수 영향 분석

김하룡(Hayong Kim),박윤경(Yoonkyung Park),주진걸(Jingul Joo) 한국방재학회 2023 한국방재학회논문집 Vol.23 No.5

기후변화로 인한 이상기후의 빈번한 발생과 저수지의 노후화가 맞물리면서 농업용 소규모 저수지를 중심으로 붕괴사고가 늘어나고 있다. 소규모 저수지라 할지라도 붕괴시 하류에 심각한 인적, 물적 피해를 발생시킬 것으로 예상되어, 노후 체계적인 관리와 더불어 저수지의 붕괴에 대비한 긴급대응계획의 수립이 반드시 필요하다. 그러나 기존의 댐 붕괴 모형의 적용에는 많은 시간과 비용이 많이 발생하여, 소규모 저수지에 적용하기는 쉽지 않은 실정이다. 이에 본 연구에서는 수치지형지도만을 사용하여 피해범위를 산정할 수 있는 Flow-R 모형을 사용하여, 소규모 저수지의 붕괴에 따른 하류피해범위를 산정하였다. 저수지 파괴 범위(10~100% 파괴)에 따라 5가지 시나리오에 대한 분석을 수행하였다. 분석결과 저수지 하류의 지형형태에 따라 침수범위가 다르게 산정되는 것이 확인되었다. 본 연구를 통하여 저수지와 관련된 제한된 자료만 있는 상황에서 저렴한 비용과 간단한 방법으로 저수지 하류의 피해범위를 산정할 수 있는 방법이 제시되었다. 본 연구가 소규모 농업용 저수지들의 긴급대비계획 수립에 활용될 수 있을 것으로 기대한다. The frequency of abnormal weather patterns owing to climate change and the aging of reservoirs are contributing to an increase in dam failures, particularly of small-scale agricultural reservoirs. Dam collapses can lead to significant human and material damage downstream, even in the case of small-scale reservoirs. Therefore, alongside systematic maintenance of aging reservoirs, establishing emergency response plans for dam failures is imperative. However, application of existing dam failure models requires a substantial amount of time and resources, making it challenging to implement for small-scale reservoirs. In this study, the Flow-R model, which can estimate downstream damage areas using only digital topographic maps, was employed to calculate the extent of downstream damage resulting from the collapse of small-scale reservoirs. Five scenarios were analyzed based on the extent of reservoir destruction (ranging from 10% to 100%). The results revealed that the inundation area varied depending on the topography downstream of the reservoir. This study proposes an affordable and straightforward method for estimating damage downstream of reservoirs, even when limited data are available regarding the reservoirs. Thus, this study can be utilized in the development of emergency response plans for small-scale agricultural reservoirs.