UN / CEFACT 전자문서의 XML 변환규칙

정용규(Yong-Gyu Jung),김운섭(Un-Seob Kim) 한국정보과학회 2002 한국정보과학회 학술발표논문집 Vol.29 No.1A

전자문서교환(EDI, Electronic)은 기업과 기업간에 컴퓨터와 컴퓨터의 통신을 통하여 필요한 거래문서를 구조화된 형식으로 교환하여 업무를 처리하는 방식을 말한다. 그동안 EDI 표준은 북미를 중심으로 한 ANSI X.12를 시작으로, 이에 대응되는 유럽중심의 UN/CEFACT 표준이 제정되었다. UN/CEFACT로 표준을 통합하기로 합의한 양대 표준은 또 다른 XML환경을 접하게 되었다. ISO TC154에서는 UN/CEFACT전자문서의 XML변환에 관한 논의하게 되었으나 표준으로 권고되지 못하고 있는 실정이다. 이런 표준간 연동의 문제를 위하여 본 논문에서는 Speaking Tag방식과 UN/CEFACT Tag방식의 두가지를 제안하며 각각에 대해 변환규칙을 제안한다.

유기주석 노출에 의한 Mysid, Neomysis awatschensis의 독성 영향

지정훈,김상규,황운기,강주찬 한국환경독성학회 2002 환경독성보건학회지 Vol.17 No.4

Tests for the toxicity of tributyltin (TBT) were conducted on mysid collected from Dadepo beach, Pusan, Korea. The toxic effects of tributyltin on the survival, growth and oxygen consumption of the mysid, Neomysis awatschensis have been evaluated. Mysids were exposed to several concentrations of TBT (0, 0.56, 1.15, 3.07 and 6.12 ㎍/L) for 6 weeks. Survival rate was decreased with increases in concentration and exposure time and the reduction of more than 40% occurred at TBT concentration greater than 1.15 ㎍/L after 6 weeks. Growth rate was significantly decreased at concentrations greater than 1.15 ㎍/L Oxygen consumption rate was also decreased in a concentration-dependent way and significantly decreased to 39, 47 and 69% of the control at 1. 15, 3.07 and 6.12 ㎍/L, respectively. These results indicate that the contamination of aquatic environment by TBT has the potential to significantly reduce coastal and estuaries recruitment of mysid.

Improvement of fibrosed scar tissue elongation using self-inflatable expander

Gyu-Un Jung,Jin-Woo Kim,Eun-Kyoung Pang,Sun-Jong Kim 대한치과의사협회 2016 대한치과의사협회지 Vol.54 No.7

We evaluated a self-inflatable osmotic tissue expander for its utility in creating sufficient soft tissue elongation for primary closure after bone grafting. Six patients with alveolar defects who required vertical augmentation of >6 mm before implant placement were enrolled. All had more than three prior surgeries, and flap advancement for primary coverage was restricted by severely fibrosed scars. Expanders were inserted beneath the flap and fixed with a screw. After 4 weeks, expander removal and bone grafting were performed simultaneously. A vertical block autograft and guided bone regeneration and distraction osteogenesis were performed. Expansion was sufficient to cover the grafted area without additional periosteal incision. Complications included mucosal perforation and displacement of the expander. All augmentation procedures healed uneventfully and the osseous implants were successfully placed. The tissue expander may facilitate primary closure by increasing soft tissue volume. In our experience, this device is effective, rapid, and minimally invasive, especially in fibrous scar tissue.

Improvement of fibrosed scar tissue elongation using self-inflatable expander

Jung, Gyu-Un,Kim, Jin-Woo,Pang, Eun-Kyoung,Kim, Sun-Jong The Korean Dental Association 2016 대한치과의사협회지 Vol.54 No.7

We evaluated a self-inflatable osmotic tissue expander for its utility in creating sufficient soft tissue elongation for primary closure after bone grafting. Six patients with alveolar defects who required vertical augmentation of >6 mm before implant placement were enrolled. All had more than three prior surgeries, and flap advancement for primary coverage was restricted by severely fibrosed scars. Expanders were inserted beneath the flap and fixed with a screw. After 4 weeks, expander removal and bone grafting were performed simultaneously. A vertical block autograft and guided bone regeneration and distraction osteogenesis were performed. Expansion was sufficient to cover the grafted area without additional periosteal incision. Complications included mucosal perforation and displacement of the expander. All augmentation procedures healed uneventfully and the osseous implants were successfully placed. The tissue expander may facilitate primary closure by increasing soft tissue volume. In our experience, this device is effective, rapid, and minimally invasive, especially in fibrous scar tissue.

Preliminary evaluation of a three-dimensional, customized, and preformed titanium mesh in peri-implant alveolar bone regeneration

Gyu-Un Jung,Jae-Yun Jeon,Kyung-Gyun Hwang,Chang-Joo Park 대한구강악안면외과학회 2014 대한구강악안면외과학회지 Vol.40 No.4

ectives: The purpose of this preliminary study is to evaluate the effectiveness of a customized, three-dimensional, preformed titanium mesh as a barrier membrane for peri-implant alveolar bone regeneration. Materials and Methods: Ten patients were recruited for this study. At the time of implant placement, all patients had fenestration or a dehiscence defect around the implant fixture. A mixture of particulate intraoral autologous bone and freeze-dried bone allograft was applied to the defect in a 1 : 1 volume ratio and covered by the preformed titanium mesh. A core biopsy specimen was taken from the regenerated bone four months postoperatively. Patients were followed for 12 months after the definitive prosthesis was placed. Results: Satisfactory bone regeneration with limited fibrous tissue was detected beneath the preformed titanium mesh. Histologic findings revealed that newly formed bones were well-incorporated into the allografts and connective tissue. New growth was composed of approximately 80% vital bone, 5% fibrous marrow tissue, and 15% remaining allograft. All implants were functional without any significant complications. Conclusion: The use of preformed titanium mesh may support bone regeneration by maintaining space for new bone growth through its macro-pores. This preliminary study presents the efficacy of a preformed titanium mesh as a ready-to-use barrier membrane around peri-implant alveolar bone defect. This preformed mesh is also convenient to apply and to remove.

Oral Presentation : Ridge augmentation in anterior ridge defect for prosthetic treatment

( Gyu Un Jung ),( Ji Young Han ) 대한치주과학회 2010 대한치주과학회 학술대회자료집 Vol.2010 No.1

Anterior maxillary defect reconstruction with a staged bilateral rotated palatal graft

Jung, Gyu-Un,Pang, Eun-Kyoung,Park, Chang-Joo Korean Academy of Periodontology 2014 Journal of Periodontal & Implant Science Vol.44 No.3

Purpose: In the anterior maxilla, hard and soft tissue augmentations are sometimes required to meet esthetic and functional demands. In such cases, primary soft tissue closure after bone grafting procedures is indispensable for a successful outcome. This report describes a simple method for soft tissue coverage of a guided bone regeneration (GBR) site using the double-rotated palatal subepithelial connective tissue graft (RPSCTG) technique for a maxillary anterior defect. Methods: We present a 60-year-old man with a defect in the anterior maxilla requiring hard and soft tissue augmentations. The bone graft materials were filled above the alveolar defect and a titanium-reinforced nonresorbable membrane was placed to cover the graft materials. We used the RPSCTG technique to achieve primary soft tissue closure over the graft materials and the barrier membrane. Additional soft tissue augmentation using a contralateral RPSCTG and membrane removal were simultaneously performed 7 weeks after the stage 1 surgery to establish more abundant soft tissue architecture. Results: Flap necrosis occurred after the stage 1 surgery. Signs of infection or suppuration were not observed in the donor or recipient sites after the stage 2 surgery. These procedures enhanced the alveolar ridge volume, increased the amount of keratinized tissue, and improved the esthetic profile for restorative treatment. Conclusions: The use of RPSCTG could assist the soft tissue closure of the GBR sites because it provides sufficient soft tissue thickness, an ample vascular supply, protection of anatomical structures, and patient comfort. The treatment outcome was acceptable, despite membrane exposure, and the RPSCTG allowed for vitalization and harmonization with the recipient tissue.

Effects of adjunctive daily phototherapy on chronic periodontitis: a randomized single-blind controlled trial

Jung, Gyu-Un,Kim, Jin-Woo,Kim, Sun-Jong,Pang, Eun-Kyoung Korean Academy of Periodontology 2014 Journal of Periodontal & Implant Science Vol.44 No.6

Purpose: The purpose of this randomized single-blind controlled trial was to elucidate the clinical and antimicrobial effects of daily phototherapy (PT) as an adjunct to scaling and root planing (SRP) in patients with chronic periodontitis. Methods: The study was conducted from December 2013 to May 2014 at Ewha Womans University Mokdong Hospital, Seoul, Korea. Forty-one patients with mild to moderate chronic periodontitis were randomly divided into two therapeutic groups in a 1:1 ratio: SRP+PT and SRP (control) groups. All participants underwent full-mouth SRP. PT was performed thrice a day for a month by using electric toothbrushes with embedded light-emitting diodes. Plaque index, gingival index, probing pocket depth (PPD), clinical attachment level (CAL), and bleeding on probing were assessed before (baseline) and four weeks after (follow-up) the treatment. Aggregatibacter actinomycetemcomitans, Porphyromonas gingivalis, Tannerella forsythia, Treponema denticola, Prevotella intermedia, Fusobacterium nucleatum, Parvimonas micra, Campylobacter rectus, Eikenella corrodens, Streptococcus mutans, and Streptococcus sobrinus levels were detected by a real-time polymerase chain reaction at the same points in time. Results: The clinical parameters improved in both the groups. At the follow-up assessment, PPD was significantly decreased in the SRP+PT group (P=0.00). Further, PPD and CAL showed significantly greater changes in the SRP+PT group than in the SRP group (PPD, P=0.03; CAL, P=0.04). P. gingivalis and T. forsythia levels decreased in this group, but no significant intergroup differences were noted. Conclusions: Adjunctive PT seems to have clinical benefits, but evidence of its antimicrobial effects is not sufficient. Long-term studies are necessary to develop the most effective PT protocol and compare the effectiveness of PT with and without exogenous photosensitizers.

자살 임박 시기 알코올 사용과 자살 기도의 특성

김임규(Im-Gyu Kim),임지섭(Ji-Seop Lim),공보금(Bo-Geum Kong),강제욱(Je-Wook Kang),문정준(Jung-Joon Moon),전동욱(Dong-Wook Jeon),김성진(Sung-Jin Kim),김현정(Hyun-Jung Kim),정도운(Do-Un Jung) 대한생물치료정신의학회 2016 생물치료정신의학 Vol.22 No.1

Objective:The aim of this study was to analyze the clinical characteristics of individuals who used alcohol at the time of attempting suicide. Methods:We divided 143 individuals who attempted suicide by consuming drugs into two groups on the basis of their blood alcohol concentration level: drinker group(n=79) and non-drinker group(n=64). We compared epidemio¬logical characteristics and suicidal behavior between the groups by using the Suicidal Intent Scale(SIS) and the Risk Rescue Rating Scale(RRRS). In addition, we administered the Glasgow Coma Scale(GCS) and the Acute Physiology and Chronic Health Evaluation-II(APACHE-II) to evaluate the medical lethality of the individuals who attempted sui¬cide. We used Student’s t-test, Pearson’s correlation analysis, and multiple linear regression to analyze the data. Results:The drinker group scored lower on the SIS’s planning subscale than the non-drinker group did(p=0.022). The drinker group’s blood alcohol concentration levels were negatively correlated with the rescue potential of their suicidal attempt(p=0.031) and the APACHE-II score(p=0.003). Higher blood alcohol concentration levels predicted poorer medical outcomes measured by the APACHE-II(p=0.004). Conclusion:Our findings support the notion that alcohol use increases suicidal impulsivity, decreases rescue po¬tential, and worsens medical outcomes. Therefore, suicide prevention programs need to include education and counseling about the risks associated with alcohol use.

Weight - Update - Control Adaptive Noise Canceller for speech enhancement in noisy factory

Gyu Dong Kim,Yun-jung Lee,Pil Un Kim,Jin Ho Cho,Myoung Nam Kim 대한전자공학회 2007 ITC-CSCC :International Technical Conference on Ci Vol.2007 No.7

In this paper we proposed a Weight - Update - Control Adaptive Noise Canceller which improves speech when environmental noise is stationary and it is hard to acquire a reference signal. The proposed method is based on facts that the factory noise is stationary and the noise is not changed in short conversation range. As a result of simulation using MATLAB, we confirmed that the proposed method is effective for reducing factory noise and has high signal to noise ratio (SNR).