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2축 편심축력을 받는 고강도 콘크리트 기둥의 등가응력블럭 수정
박준용,유석형,반병열,신성우 대한건축학회 2003 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.23 No.1(구조계)
The characteristics of stress distribution of non rectangular compressed area in the RC columns are different to those of rectangular compressed area. Nevertheless, in ACI 318-99 code, the design tables for columns subjected to axial loads with bidirectional eccentricities are based on the parameters recommended for rectangular stress block(RSB) of rectangular compressed areas. In this study the characteristics of stress distribution through both angle and depth of neutral axis are observed and formulated rationally. And the modified parameters of rectangular stress block(MRSB) for non rectangular compressed area is proposed. And the computer program using MRSB for the biaxial bending analysis of RC columns in developed and the results of MRSB are compared to RSB and experimental results respectively.
정종철,최홍란,오희균,박준아,류선열,이종호,김영운,정숭룡 大韓顎顔面成形再建外科學會 1995 Maxillofacial Plastic Reconstructive Surgery Vol.17 No.3
Malignant fibrous histiocytoma rarely occurs in the jaws. Although the histogenesis of this tumor remains controversal, it is best regarded as a primitive and pleomorphic nature reflected by collagen production and occasional phagocytosis. It is common for metastatic foci to appear in lung and regional lymph node. There are variable treatments such as radiotherapy, surgical excision or combination, therapy of surgical excision, chemotherapy and radiotherapy. With the review of literatures, the authors report the clinical study of two cases of malignant fibrous histiocytoma of the jaw.
정찬문,임흥빈,이이,정열영,전병록 충북대학교 연초연구소 2009 煙草硏究 Vol.22 No.-
본 시험은 인삼의 채종종자의 조직을 관찰하여 잠아의 실체를 조사하였고 묘삼의 잠아특성을 산지별로 조사하여 다경이 되는 잠아의 발달경로를 알아보았다. 그리고 묘삼을 본포에 이식하여 3년생을 채굴하여 4년생이 될 주아의 생성경로를 조사하였다. 1. 묘삼의 주아는 발아종자의 경근천이부에서 피층조직이 융기하여 돔(dome)형태의 원잠아 또는 측잠아가 형성된 후 이들 조직이 분화하여 발달하였다. 2. 묘삼의 단뇌는 90%가 원잠아에서 유래하였고 쌍뇌는 원잠아와 2%정도의 측잠아1개가 발달되어 형성되었으며 3뇌는 원잠아와 측잠아 2개가 발달하여 형성되었다. 3. 본포에서 2년생과 3년생은 주아가 단뇌로 형성되어 있어 2경개체가 발생하지 않으나 4년생은 3년생에서 발달한 쌍뇌 이상의 주아가 있어 2경개체이상이 관찰되는 최초의 연생이었다. 4. 4년생의 주아는 종자에서 형성된 원잠아, 측잠아와 2-3년생에서 뇌두부위에서 형성된 피층잠아에서 유래하는 것으로 고년생으로 갈수록 쌍뇌 또는 3뇌는 원잠아에 비해 피층잠아 유래의 주아가 많았다. We studied the substance of latent bud by surveying the embryo of harvested seed and developmental pathway of latent bud by analysing the characteristics of latent bud of local ginseng lines. We transplanted one year old ginseng seedlings in the field and harvested it out two years later. And then We investigated developmental pathway of the main bud which would be the shoot of ginseng in the fourth year. Main bud of seedling was formed from the region between root and shoot of germinating seed. Primary and axillary latent buds protruded in dome shape from cortex tissue and differentiated into main bud. Ninety percent of single main bud was derived from primary latent bud, twin main buds were derived from primary latent bud and one axillary bud, and triple main buds were derived from primary latent bud and two axillary latent buds. In the field, We could not find 2-stem plant from 2-3 years old plant, however, We found 2-stem plant from 4-year-o1d plant because twin main buds developed from 3-year-o1d plant. Therefore 2-stem plant was observed obviously from the plant at least 4 years old. Main buds of 4-year-old plant were formed from primary and axillary latent bud of seed and cortex latent bud of rhizome from 2-3 years old plant. In older plants, twin and triple main buds were derived more from cortex latent bud than primary latent bud.
Jun, Sung-Youl,Huh, Jong-Ho,Jang, So-Hee 한국마케팅학회 2007 ASIA MARKETING JOURNAL Vol.2 No.1
In this study, we investigate the relative effectiveness of the two types of brand extensions (sequential vs. direct) in dissimilar extensions and examine the moderating role of the two key variables - brand concept (functional brand vs. symbolic brand) and price of target extension product (low vs. high). The results from two experiments show that consumers evaluate the target extension product more favorably when the brand is extended sequentially to dissimilar categories than when it is extended directly. However, the difference of target extension product evaluation between sequential extensions and direct extensions decrease when the brand is symbolic and the price of target extension products is high. Theoretical and managerial implications of the finding are discussed and implications for future research are suggested.
Injury incidences in scuba divers of British Sub-Aqua Club (BSAC) : A retrospective study
Jun-Youl Cha,Gwang-Suk Hyun,Jung-Min Park,Nam-Heung Cho,Yong-Seok Jee 한국운동재활학회 2015 한국운동재활학회 학술대회 Vol.2015 No.10
Scuba diving itself is generally known as a safe sports. However, various injury accidents can happen, and the incidences vary depending on divers' education grade levels about the risks. Therefore, the study set out to identify and analyze the causes and patterns of injuries depending on the divers' safety education grade levels through a questionnaire survey targeting Ocean divers (n=12), Sports divers (n=16), and Dive leaders (n=15), all of whom belong to the British Sub-Aqua Club (BSAC). After conducting a frequency analysis on the collected questionnaires, the results are made as follows. First, in terms of diving depth, the most frequent diving depth was 15-20m among Ocean divers, 20-25m among Sports divers, and 15-20m in case of Dive leaders. Second, with regard to the causes of injuries, the most frequently answered causes are 'Overtension' and 'Low Skill' among Ocean divers; 'Low Skill' among Sports divers; 'Overaction among Dive leaders. Third, in terms of injury patterns, the most frequently answered injury patterns are 'Ear' injuries among Ocean divers; 'Ankle' injuries among Sports divers; 'Ankle' and 'Calf' injuries among Dive leaders. Fourth, with regard to who performed first-aid when an injury accident happened, the most frequent answers are 'Instructor' among Ocean divers; 'Instructor' and 'Self' among Sports divers; 'Self" among Dive leaders.
Metachronous Ovarian Metastases Following Resection of the Primary Gastric Cancer
Jun, Si-Youl,Park, Jong-Kwon The Korean Gastric Cancer Association 2011 Journal of gastric cancer Vol.11 No.1
Purpose: We performed this study to evaluate the clinical presentation as well as the proper surgical intervention for ovarian metastasis from gastric cancers and these tumors were identified during postoperative follow-up. This will help establish the optimal strategy for improving the survival of patients with this entity. Materials and Methods: 22 patients (3.2%) with ovarian metastasis were noted when performing a retrospective chart review of (693) females patients who had undergone a resection for gastric cancer between 1981 and 2008. The covariates used for the survival analysis were the patient age at the time of ovarian relapse, the size of the tumor, the initial TNM stage of the gastric cancer, the interval to metastasis and the presence of gross residual disease after treatment for Krukenberg tumor. The cumulative survival curves for the patient groups were calculated with the Kaplan-Meier method and they were compared by means of the Log-Rank test. Results: The average age of the patients was 48.6 years (range: 24 to 78 years) and the average survival time of the 22 patients was 18.8 months (the estimated 3-year survival rate was 15.8%) with a range of 2 to 59 months after the diagnosis of Krukenberg tumor. The survival rate for patients without gross residual disease was longer than that of the patients with gross residual disease (P=0.0003). In contrast, patient age, the size of ovarian tumor, the initial stage of gastric adenocarcinoma, the interval to metastasis and adjuvant chemotherapy were not prognostic indicators for survival after the development of ovarian metastasis. Conclusions: Early diagnosis and complete resection are the only possible hope to improve survival. As the 3-year survival rate after resection of Krukenberg tumor is 15.8%, it seems worthwhile to consider performing tumorectomy as the second cytoreduction.