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대상 기기에 제한이 없는 스마트폰 기반의 적외선 리모컨
황성진(Hwang, Seong-Jin)이미현(Lee,Mi-Hyun),홍정표(Hong, Jeong-Pyo),박태근(Park, Tae-Geun),김용석(Kim, Yong-Seok) 강원대학교 산업기술연구소 2014 産業技術硏究 Vol.34 No.1
Infrared remote controllers are widely used in controlling electronic devices due to its simplicity and convenience. This paper presents a smart phone application unifying any infrared remote controllers. We can select a device from device list menu of the application. Any new device can be added easily by downloading the protocol file of the device from protocol file server. Remote controller protocol files are stored in audio file format, and the file related to a specific menu button is transmitted through the audio jack of smart phones. The protocol file server is a standard file server, and protocol files for various devices are collected by infrared receiver module. For smart phones without infrared facility, a small infrared module translating audio signal to infrared signal is applied.
McIndoe 수술 후 발생한 질탈출증의 질식 천골가시 인대 고정술에 의한 교정
황성진 ( Seong Jin Hwang ),손정빈 ( Jung Bin Son ),김현경 ( Hyun Kyung Kim ),배정훈 ( Jeong Hoon Bae ),천소희 ( So Hee Cheon ),이동현 ( Dong Hyun Lee ),박인양 ( In Yang Park ),김창이 ( Chang Yi Kim ) 대한산부인과학회 2004 Obstetrics & Gynecology Science Vol.47 No.9
McIndoe procedure using the colonic segment has been used in treatment of patients with Mullerian agenesis. Prolapse of a colonic neovagina is rare condition and its treatment is not yet standardized. We experienced a case of neovaginal prolapse following
새로 발생한 13 q32.2 → qter 결손과 동반된 13 번 환상염색체 환아 1 예
황성진(Seong Jin Hwang),이지현(Jee Hyun Lee),박인양(In Yang Park),문희봉(Hee Bong Moon),오준환(Joon Hwan Oh),이귀세라(Gui Se Ra Lee),이종승(Chong Seung Yi),신종철(Jong Chul Shin),김수평(Soo Pyung Kim) 대한산부인과학회 2002 Obstetrics & Gynecology Science Vol.45 No.2
We report a case of ring chromosome 13 with a distal deletion of 13q32.2→qter observed in a fetus who was referred to our institution at term due to severe growth restriction and multiple congenital malformations on ultrasonographic examination. This boy was born by vaginal delivery at 39 weeks in gestation. His weight, head circumference and height were less than the 3 percentile of gestational age. Apgar score was 7 at 1 minute and 9 at 5 minutes. He showed microcephaly, large forehead, low set ears, hypertelorism, flat nasal bridge, and micrognathia. The genitalia was ambiguous, showing severe hypoplasia of the penis. The anus was ectopic, displaced anteriorly from its normal position but with a normal opening and function. Neurologic examination was normal. Echocardiogram done at 2 weeks of life showed a persistent foramen ovale and a ventriculoseptal defect (type II) with increased pulmonary hypertension. MRI examination of the brain showed poorly demarcating corpus callosum suspecting agenesis of corpus callosum. Also, cerebellar vermis was small and hypoplastic, mimicking a variant form of Dandy-Walker malformation. MRI of the pelvis showed a tubular structure in pelvic cavity, suspicious of uterine remnant, between urinary bladder and rectum, and a inguinal hernia was noted in the left side. In the abdominal cavity enlarged adrenal glands were noted, and hormonal study showed elevated 17-α-OH-progesterone (168.9 ng/ml) with normal 17-KS and 17-OHCS levels. Gastrointestinal and urogenital system were otherwise normal. Cytogenetic analysis of the parents were both normal but the newborn showed 46, XY, r(13), de novo, with deletion points q32.2→qter. Our findings are in line with previous reports about chromosome 13 deletions, in which loss of the critical point leads to major malformations like brain anomalies and ambiguous genitalia.
정보보호 : SRTP, MIKEY, CMS, IPSec, TLS, IPTV에 대한 패딩 오라클 공격 가능성 분석
황성진 ( Seong Jin Hwang ),박명서 ( Myung Seo Park ),문덕재 ( Duk Jae Moon ),강형철 ( Hyung Chul Kang ),김종성 ( Jong Sung Kim ),이창훈 ( Chang Hoon Lee ) 한국정보처리학회 2015 정보처리학회논문지. 컴퓨터 및 통신시스템 Vol.4 No.2
인터넷상의 다양한 응용환경에서는 개인정보 및 민감한 정보를 보호하기 위해서 안전성이 검증된 암호 알고리즘을 사용한다. 하지만 안전성이 검증된 암호 알고리즘을 사용하여도 주어진 암호 알고리즘을 적용하는 방식이 올바르지 못하면 보호하고자 하는 정보들이 누출될 수 있다는 연구 결과와 공격기법들이 소개되고 있다. 이 공격방법들 중 대표적인 사례가 패딩 오라클 공격이다. 본 논문에서는 블록 암호 기반 CBC운영모드와 CBC 패딩 방법을 적용하는 응용환경인 STRP, MIKEY, CMS, IPSec, TLS, IPTV에 대해 패딩 오라클 공격을 적용하고, 패딩 오라클 공격에 대한 공격 가능 여부 및 취약점에 관하여 연구하였다. In the various application environments on the internet, we use verified cipher algorithm to protect personal information. Even so, if an application method isn``t proper, the information you want to keep can be intercepted. One of the representative examples of it is a PADDING ORACLE ATTACK. This thesis studied about STRP, MIKEY, CMS, IPSec, TLS, IPTV, an application environment which apply CBC operational mode based on block cipher and CBC padding method, and about whether we can attack against the Padding Oracle Attack as well as the vulnerable points.
황성진 ( Seong Jin Hwang ),권지영 ( Ji Young Kwon ),박인양 ( In Yang Park ),김찬주 ( Chan Joo Kim ),신종철 ( Jong Chul Shin ),김창이 ( Chang Yi Kim ) 대한주산의학회 2007 大韓周産醫學會雜誌 Vol.18 No.3
목적: 임신 제일삼분기에 절박유산으로 진단받은 임신부에서 임신 20주 이후까지 성공적으로 임신이 유지된 군과 자연유산이 일어난 군에서 배아심박수의 차이를 알아보고자 한다. 방법: 연구 대상은 86명이었으며 임신이 20주 이상 지속된 경우가 73명 자연유산이 일어난 경우가 13명이었다. 절박유산 진단 시 두 군의 평균 심박수에 차이가 있는지 분석하였으며 두 군간의 특성을 비교하기 위하여 산모 연령, 진단 시 재태연령 등을 비교하였다. 결과: 임신이 20주 이상 지속된 군의 절박유산 진단 시 심박수는 153.1±22.9로 자연유산이 일어난 군의 134.6±18.8와 유의한 차이를 나타내었다(p=0.0076). 두 군의 진단 시 임신 주수는 8.0±1.9와 7.5±1.9로 유의한 차이를 보이지 않았으며 두 군의 특성인 연령, 초산모 비율 등에는 유의한 차이가 없었다. 결론: 절박유산으로 진단 된 임신부의 경우 배아 심박수에 따라 예후에 차이를 보이는 것을 알 수 있었으며 상대적으로 심박수가 빠른 경우 예후가 좋은 것을 알 수 있었다. 또한 심박수가 110회 미만인 경우 모두에서 자연유산이 발생하여 보다 적극적 치료 및 예후에 대한 상담이 필요한 것으로 나타났다. Objective: The purpose of our study was to investigate the relationship between prognosis of threatened abortion and embryonic heart rate at diagnosis. Methods: The study group included 86 patients in which a singleton fetus with cardiac activity was initially documented. The study population was divided into successful pregnancy group (73 cases, pregnancy was maintained above 20 weeks of gestation) and spontaneous abortion group (13 cases). We compared the embryonic heart rate, age of mother, gestational age at diagnosis between two groups. Results: A significant difference of embryonic heart rate was noted between the successful group and the spontaneous abortion group (153.1±22.9 vs 134.6±18.8 beats/min, p=0.0076). There was no statistical difference in the gestational age at diagnosis (8.0±1.9 vs 7.5±1.9 weeks), the age of mother, and primi para proportion. Conclusion: The prognosis of threatened abortion was related to the embryonic heart rate. Embryos with slow heart rates had a greater risk of spontaneous abortion. All cases with slow embryonic heart rate (<110 beats/min) had occurred spontaneous abortion. Therefore, these case were needed more information and aggressive treatment.
월경주기에 따른 Inhibin A와 B의 혈중 농도 변화
김장흡 ( Jang Heub Kim ),이윤진 ( Yoon Jin Lee ),황성진 ( Seong Jin Hwang ),조현희 ( Hyun Hee Jo ),권동진 ( Dong Jin Kwon ),김은중 ( Eun Jung Kim ),김진홍 ( Jin Hong Kim ),이진우 ( Jin Woo Lee ) 대한산부인과학회 2003 Obstetrics & Gynecology Science Vol.46 No.6
Objective : To understand the physiologic effects and secretion pattern of inhibin A and inhibin B throughout menstrual cycle in the normal reproductive women, serum values of inhibin A and inhibin B were measured. Methods : Inhibin A and inhibin B levels
Calcite 필러를 함유한 유리 복합체의 표면형상과 반사율
전재승,황성진,안지환,김형순,Jeon, Jae-Seung,Hwang, Seong-Jin,Ahn, Ji-Hwan,Kim, Hyung-Sun 한국재료학회 2009 한국재료학회지 Vol.19 No.8
Reflection properties, such as specular reflection and diffuse reflection, are very important optical properties for the reflector, which has high reflectance in the display and architecture industry. Calcite is lowcost, nontoxic, and stable over a wide temperature range. Therefore, it is one of the most widely using fillers in many industries and has some advantages over titania as a filler to improve reflectance. However, optical properties, especially those of ceramic-filled composites, have not been analyzed. We studied the reflectance of calcite composites with their surface roughness. The reflectance of the composites was determined using a UV-visible spectrometer. The surface morphology and the micro-structure of the composites were investigated by atomic force microscope. The reflectance of the composites was improved by increasing the content of calcite in the calcite-frit composite. The reflectance is related with the surface roughness in the composites. However, the reflectance depends on the calcite contents in materials with similar surface roughness.
Li<sub>2</sub>O-Al<sub>2</sub>O<sub>3</sub>-SiO<sub>2</sub>(LAS)계 결정화유리에서 결정크기와 표면조도 관계
김유진,황성진,김형순,Kim Yu Jin,Hwang Seong Jin,Kim Hyung Sun 한국재료학회 2004 한국재료학회지 Vol.14 No.7
The glass-ceramic based on LAS($Li_{2}O-Al_{2}O_3-SiO_{2}$) system was observed using SEM(Scanning Electric Microscopy) and AFM(Atomic Force Microscopy) and it was expected to get a correlation between the crystal size and the surface roughness through the result. At heat treatment conditions (the nucleation: $740\~800^{\circ}C$, the crystal growth: $900\~1150^{\circ}C$), the crystal size was increased from 72 to 450 nm so that the mean of surface roughness was also risen from 0.8 to 6.3 nm. Based on the results, the surface roughness of glass-ceramic is controlled by the factors, crystal size, crystallines, and the condition of heat treatment.
원주연,황성진,이상호,김형순,Won, Ju-Yeon,Hwang, Seong-Jin,Lee, Sang-Ho,Kim, Hyung-Sun 한국전기전자재료학회 2009 전기전자재료학회논문지 Vol.22 No.6
For the application of the photosensitive barrier ribs with optimal properties such as glass transition temperature, refractive index and coefficient thermal expansion, the boro-silicate glasses was studied. The glass transition temperature, coefficient thermal expansion, and refractive index of the glasses based on the $B_2O_3-Al_2O_3-Al_2O_3-SiO_2$ glass system have been investigated with the different ratio of BaO/$Na_2O$ and $B_2O_3/Na_2O$. Increasing the ratio of $B_2O_3/Na_2O$ was led to the increase of coefficient thermal expansion and the decrease of glass transition temperature. The increase of refractive index of boro-silicate glasses increased with the density of glasses. We suggest the empirical equation for the prediction of refractive index with the glass density, $n=0.123{\rho}+1.182$ with 0.042 as the standard deviation in the boro-silicate glass system. The aim of the present paper is to give a basic result of the thermal and optical properties for designing the composition of photosensitive barrier ribs in PDP.