강박장애에서 정서 이상의 의미

황성식,노대영,김찬형,Hwang, Syung-Shick,Roh, Dae-Young,Kim, Chan-Hyung 대한불안의학회 2010 대한불안의학회지 Vol.6 No.1

Researchers consider obsessive-compulsive disorder (OCD) to be an anxiety disorder, but it often shows comorbidity with other disorders in the affective spectrum. Epidemiological and clinical studies have shown a strong association between OCD and mood disorders. In addition, some reports show the patients with OCD have attentional-processing impairments regarding emotional information. However, research has not revealed the exact nature and degree to which OCD constitutes an affective problem. In this review, we discuss the affective aspects of OCD and the relationship between OCD and mood disorders.

국내 원전 증기발생기 전열관 재료의 PbSCC 저항성 평가

황성식,김홍표,한정호,김정수,김주엽 한국표면공학회 1999 한국표면공학회 학술발표회 초록집 Vol.1999 No.-

연마 과정에 따른 열중합 의치상 레진의 표면 거칠기 평가

황성식,임용운,김시철,한민수 대한치과기공학회 2015 대한치과기공학회지 Vol.37 No.4

Purpose: The objective of this study was to compare the surface roughness according to polishing process in conventional laboratory techniques used for polishing three different acrylic denture base resins. Materials and methods: Specimen preparation and surface polishing procedures were conducted to manufacturer’s recommendation with three heat-polymerized denture base resins. Surface roughness and gloss were measured by a contact type tester and a LED gloss checker using thickness 2 mm and diameter 10 mm. There were five specimens for each acrylic resin material and polishing procedures. Mean average surface roughness (Ra) values of each specimen group were analyzed using a one-way ANOVA analysis of variance and Scheffe’s post hoc test. Surfaces after surface roughness and gloss testing according to each polishing process were evaluated under a stereoscopic microscope. Results: The highest mean average surface roughness was measured (Ra=2.43± 0.47) for surfaces finished with a denture tungsten carbide bur in Triplex. The lowest surface roughness values (Ra=0.11 ±0.07) were determined in Vertex polished with a lathe. In addition, all materials revealed that surface roughness determined highly in HP1 and HP2 than other procedures. All correlation between surface roughness and gloss showed highly with three heat-polymerized resins. Specially, topmost correlation revealed than other material in Triplex. Significant differences in mean average surface roughness were found between polishing process used high speed lathe and low speed hand-piece. Conclusions: Laboratory polishing used to high speed was found to produce the smoothest surface of heat-polymerized denture base acrylic resin. Therefore, we recommended that high polishing process need to get smooth surface.

Ni Plating Technology for PWR Reactor Vessel Cladding Repair

황성식,김동진 한국부식방식학회 2019 Corrosion Science and Technology Vol.18 No.5

SA508 low-alloy steel for a reactor vessel was exposed to primary water in a pressurized water reactor(PWR) plant because the cladding layer of type 309 stainless steel for the RPV was removed, due to anaccident in which the detachment of the thermal sleeve occurred. The major advantage of the electrochemicaldeposition (ECD) Ni plating technique is that the reactor pressure vessel can be repaired without significantthermal effects, and Ni has solid corrosion resistance that can withstand boric acid. The corrosion rateassessment of the damaged part was performed, and its trend was analyzed. Essential variables of the Niplating for repair of the damaged part were derived. These conditions are applicable variables for the repairplating device, and have been carefully adjusted using the repair plating device. The process for establishingASME technical standards called Code Case N-840 is described. The process of developing Ni-plating devices,and the electroplating procedure specification (EPS) are described.

원자로 내부구조물 재료열화이력 및 관리방안

황성식,김성우,김동진,최민재,임연수,Hwnag, Seong Sik,Kim, Sung Woo,Kim, Dong Jin,Choi, Min Jae,Lim, Yun Soo 한국압력기기공학회 2016 한국압력기기공학회 논문집 Vol.12 No.1

The number of nuclear power plants operating in Korea was 24 as of year 2015. Nine units out of 24 units have been operated for a period over 20 years. Kori unit 1 has been in operation for 40 years, and an extended operation for Wolsong unit 1 was decided in 2015. There has been reported some crackings in reactor internals in PWR have been reported in Europe, USA, Japan and Korea, and some of them were replaced with new one. Repair and replacement technologies for the reactor internals have been developing in order to meet the regulatory requirements for long term operation in Korea. The technologies will also be used for the exported nuclear units. It is required to review degradation history of the reactor internals worldwide as a part of the degradation management program development. Schematics of reactor internals designed and supplied by Westinghouse, Framatome and Combustion Engineering are described herein. Materials degradation history of reactor internals of PWR plants in USA, Japan and Europe is surveyed and summarized. Some events from Korean plants are also described. Aging management strategy for the internals is suggested.

수용액 중의 Pb가 Ni-기 합금의 용출 및 부동태피막에 미치는 영향

황성식,김우철 한국표면공학회 1996 한국표면공학회 학술발표회 초록집 Vol.1996 No.-

Pb 함유용액 속에서 Ni-base 합금의 부식거동

황성식,김우철 한국표면공학회 1995 한국표면공학회 학술발표회 초록집 Vol.1995 No.-

韓國人 2歲兒 주關節部 骨年齡

황성식 全南大醫大 1983 전남의대학술지 Vol.20 No.2

강박장애와 글루타메이트 기능 이상

황성식,김찬형,Hwang, Syung-Shick,Kim, Chan-Hyung 대한불안의학회 2007 대한불안의학회지 Vol.3 No.1

The definite causes of obsessive-compulsive disorder (OCD) are still unknown. OCD has been suggested to be related to many neurotransmitters in brain, such as serotonin, dopamine and glutamate. It has been shown that serotonergic neurons play a crucial role in the pathophysiology of OCD. Recently, it is known that neurotransmitters other than serotonin also play a role in the pathophysiology of OCD, and a series of studies have provided a few evidence that glutamate may be involved in some OCD patients. The purpose of this article was to review the literatures on glutamatergic dysfunction in OCD. We suggest that glutamatergic dysfunction may be implicated in the pathophysiology of OCD.

출신국가 및 이주국가의 정책적 특성에 따른 시민권 취득: 이민자의 선별성에 따른 차이를 중심으로

황성식,유정균 한국사회학회 2021 韓國社會學 Vol.55 No.2

The three main factors that constitute immigrants’ behavior on citizenship acquisition are costs, benefits, and barriers. By extending the discourse on these factors, this study explores cross-national variation in immigrants’ citizenship acquisition. The focus is on investigating whether the effects of national policies vary based on the immigrant’s selectivity. For the analysis, we combined the European Social Survey (ESS) with various aggregate-level data sets. The analysis results by the cross-classified multilevel logistic modeling suggest that the effects of national policies differ considerably depending on the immigrant’s selectivity. The effects of the dual citizenship policy of origin countries and the welfare system of destination countries were stronger among immigrants who were positively selected. In contrast, the effect of citizenship accessibility of destination countries was more salient for the negatively selected immigrants. These results indicate that highly selected immigrants acquire citizenship through strict consideration for the benefits and costs, while they incline to overcome the institutional barriers during the acquiring procedure. 이 연구는 시민권 취득의 이익(benefit), 비용(cost) 및 장벽(barrier)에 관한 이론적 논의를 확장하여, 출신국가 및 이주국가의 정책적 특성에 따른 시민권 취득의 차이를 설명하고자 하였다. 구체적으로, 출신국가와 이주국가의 정책적 특성의 영향이 이민자의 가치관과 행동양식을 규정하는 대표적인 속성인 이민자의 선별성(immigrant selectivity)에 따라 다르게 나타나는지를 파악하고자 하였다. 분석을 위하여 유럽사회조사를 기반으로 Migrant Integration Policy Index와 Barro-Lee dataset을 결합하여 자료를 구축하였다. 교차다층 로지스틱 분석을 실시한 결과, 이주국가의 복지체제와 출신국가의 이중국적 허용 여부, 이주국가의 시민권에 대한 제도적 접근성이 시민권 취득에 미치는 영향은 이민자의 선별성에 따라 상이한 것으로 밝혀졌다. 이주국가의 복지체제와 출신국가의 이중국적 허용여부는 선별성이 높은 집단일수록 더욱 강한 영향을 미치는 반면, 이주국가의 시민권에 대한 제도적 접근성의 영향은 선별성이 낮은 집단에서 보다 뚜렷하게 나타났다. 선별적인 이민자들의 경우 시민권 취득의 이익과 비용에 대하여 보다 엄밀한 고려를 통해 시민권 취득을 결정하는 한편, 취득 과정에서의 장벽은 극복하고자 하는 것으로 결론지을 수 있다.