논리 프로그래밍과 DBMS 결합에 따른 순환문제해결에 관한 연구

崔宰赫,權寧淡,朴世明 新羅大學校 1990 論文集 Vol.29 No.-

Recently, the design and implemenation of a logic programming system capable of handing very large knowledge bases will be present. The loose coupling is an act without resursion. This paper introduces the purpose of loose coupling system with recursion. This system is implemented by adding a sub-process SELECTOR and particular two system calls. This can be used to avoid high cost in consructing a new large full integration system and coupling system of recursion problem.

태권도 경기중 발차기 기술의 공격유형 및 득점부위별 고찰

安容奎,李載鳳,趙誠曇 龍仁大學校 體育科學硏究所 1994 體育科學硏究論叢 Vol.4 No.1

The following was concluded as a result of analysis based on taekwondo games(Total 56 games, 112 athletes) outstanding athletes of colleges parts participated in 1993. The purpose of this study is to examine the result of kicking techniques in the attack first and counter attack in each kicking techniques and the kicking on each body section. 1. The result of each kicking techniques. 1) The total frequency of kicking techniques was 3,478 times, Average frequency per game was 62.11 times in 56 games. And the frequency of kicking technique was as below : Front turning kick : 2,636 times. Back kick : 360 times Hook kick : 297 times Front whipping : 121 times Back whipping : 64 times In the frequency of each kicking techniques were more than other study. 2) The total point of each kicking techniques was 444, Average point per game was 7. 93. The point by each kicking technique was as below: Front turning kick :258 points Back kick : 360 times Hook kick: 61 points Front whipping: 13 points Back whipping: 6 points The results had twice(7.93 points) as much as other studies. 3) The scoring rate of each kicking techniques. The scoring rate of all the kicking technique was 12.76, the rate in each kicking technique was as below: Back kick:29.44 Hook kick:20.53 Frint whipping kick:1074 Front turning kick:9.78 Back whipping kick:9.37 The scoring rate in other studies showed highly in the Back kick, Hook kick, Front whipping kick but the scoring rate in this study showed highly in the Back kick Hook kick, Front whipping kick. 2. The result of the attack first in each kicking technique. 1) The frequency of the attack first in each kicking technique. total frequency of the attack first in each kicking technique was 1.905 times, the average frequency per game was 34.01 times and the everage frequency per game of each kicking technique was as below: Front turning kick: 28.88 times Hook kick:3.5 times Back kick:1.67 times front whipping kick:0.33 times Back whipping kick:0.21 times The frequency of the attack first(1.905 times) was 54.8% of frequency of all kicking technique. 2) The point gained by the attack first in each kicking technique. Total point gained by the attack first in each kicking technique was 188 points and points of each kicking technique was as below: (1) Front turning kick:134 points (2) Hook kick: 42 points (3) Back kick: 10 points (4) Back whipping kick: 2 points The point of Front wipping kick was almost nothing. Average point per game of the attack first in all kicking techniques was 3.35 points. 3) The scoring rate of the attack first in each kicking technique The scoring tate of the attack first in each kicking technique was as below: (1) Hook kick:21.43 (2) Back whipping kick:16.67 (3) Back kick:10.46 (4) Front turning kick:8.45 Front turning kick was high in the frequency but the scoring rate was relatively low and the scoring rate of Hook kick and Back whipping kick was fairly high. Accordingly, we concluded that the difficult techniques got many point. 3. The result of the counter attack in each kicking technique. 1) The frequency of the counter attack in each kicking technique. total frequency of the counter attack in each kicking technique was 1,573 times, the average frequency per game was 28.08 times and frequency of the counter attack in each kicking technique was as below: (1) Front turning kick:1.573 times (2) Back kick:266 times (3) Front whipping kick:102 times (4) Hook kick:101 times (5) Back whipping kick:52 times The frequency of the counter attack(1.573 times) was 45.2% of frequency of all kicking technique(3.478 times). 2) The point gained by the counter attack in each kicking technique. Total point gained by the counter attack in each kicking technique was 256 points and points of each kicking technique was as below: (1) Front turning kick:124 points (2) Back kick:96 points (3) Hook kick:19 points (4) Front whipping kick:4 points The point of the counter attack showed by Front turning kick and Back kick. Average point per game of the counter attact of kicking technique was 4.57 points. 3) The scoring rate of the counter attack in each kicking technique The scoring tate of the counter attack in each kicking technique was as below; (1) Back kick:36.09 (2) Hook kick:18.81 (3) Front whipping kick: 12.75 (4) Front turning kick:11.79 (5) Back whipping:7.69 Only, the scoring rate of Hook kick in the counter attack was low, but the scoring rate of other kicking techniques in the counter attack showed fairly high. 4. Comoarative Analysis between the attack first and the counter attack The frequency of the attack first(1,905 times) in total kicking technique was more than that of counter attack(1,573 times) but the point of the attack first (188 points) was lower than that of the counter attack(256 points). Thus, the scoring rate of the counter attack(16.27) was higher than that of the attack first(9.87). The preceding study reported that all the kicking techniques were many used for counter attack but this study showed that Front turning kick and Hook kick were many used for the attack first, and that the players depended on the counter attack, for the counter attack was bettwe than the attack first in gaining points. 5. The result of kicking technique on each body section. The players can attack the face (high section) by all kicking techniques but the frequency of attacking the face was 731 times(21.02), that of attacking the body(middle section) was 2,747 times(78.98) of total frequency(3.478 times). Therefore, It showed that the players depended on body attack. The frequency of each kicking technique attacking the face(731 times) was as be-iow: (1) Hook kick: 196 times (2) Front turning kick:135 times (3) Front whipping kick:19 times (4) Back whipping kick:12 times (5) Back kick:7 times Total frequency of kicking technique attacking the body was 2,747 times, Front turning kick was 2,419 times and back was 328 times. Total point of all the games was 444 and the point gained by attacking the face was 110(24.77 of 100), the body was 334 (75.23 of 100) Total point gainde by attacking the face(110 points) in each kicking technique was as below: (1) Hook kick:61 points (2) Front turning kick:24 points (3) Front whipping kick:13 points (4) Back kick:6 points (5) Back whipping kick:6 points The point gained by attacking the body(middle section) was as Front turning kick:234 points, Back kick:100 points. Consequently, we concluded that attacking the body was the most effective in gaining points.

일차배양된 인체 청신경종양의 Schwann 세포의 냉동저장과 재배양

유영상,이재담 釜算慶南耳鼻咽喉科學會 1993 임상이비인후과 Vol.4 No.1

사람 혈청 Vitronectin의 정제 및 항 Vitronectin 다클론 항체의 생산

장윤혜,김백남,이성순,문경,김승후,이재담 大韓免疫學會 1996 大韓免疫學會誌 Vol.18 No.2

Background: Vitronectin is one of major cell- adhesive glycoprotein in mammalian serum and plasma ; the other is fibronectin. It is a mixture of 65 and 75kDa protein in plasma which promotes spreading of a variety of cultured cells ,inhibits the cytotoxicity of membrane attacks complex C5b-7 and modulates thrombin-antithrombin III activity. Human plasma and serum contain 10-40mg of vitronectin per 100ml,but only a few mg or less of vitronectin can be isolated with a 0.5-20% recovery efficiency through very long processes or with expensive,commercially available monoclonal antibody. In this study, we purified the vitronectin from human plasma and produced anti-vitronectin polyclonal antibody using purified vitronectin. Methods: Vitronectin was purified from the human plasma by heparin-sepharose column and its efficacy was measured by cell spreading assay. Anti-vitronectin polyclonal antibody produced and confirmed by ELISA and immunoblotting. Results: This procedures produced about 0.8mg vitronectin from 100ml human plasma within 2 days. 1) Purified vitronectin promoted spreading of HepG2 hepatoma cells on substrates with a half maximal activity at 0.lug/ml. 2) In SDS-PAGE analysis of purified protein, 2 bands were found and their molecular weights were 75kDa and 65kDa,respectively. 3) The immunoblotting assay showed that the bands of molecular were same site as SDSPAGE analysis. Conclusion: Simple,rapid purified vitronectin by heparin-sepharose column and anti-vitronectin antibody may facilitate the elucidation of vitronectin function and action mechanism in human body.

Impact of early diagnosis on functional disability in rheumatoid arthritis

( Dam Kim ),( Chan-Bum Choi ),( Jiyoung Lee ),( Soo-Kyung Cho ),( Soyoung Won ),( So-Young Bang ),( Hoon-Suk Cha ),( Jung-Yoon Choe ),( Won Tae Chung ),( Seung-Jae Hong ),( Jae-Bum Jun ),( Young Ok Ju 대한내과학회 2017 The Korean Journal of Internal Medicine Vol.32 No.4

Background/Aims: To determine whether early diagnosis is beneficial for func-tional status of various disease durations in rheumatoid arthritis (RA) patients. Methods: A total of 4,540 RA patients were enrolled as part of the Korean Obser-vational Study Network for Arthritis (KORONA). We defined early diagnosis as a lag time between symptom onset and RA diagnosis of ≤ 12 months, whereas patients with a longer lag time comprised the delayed diagnosis group. Demo-graphic characteristics and outcomes were compared between early and delayed diagnosis groups. Logistic regression analyses were performed to identify the im-pact of early diagnosis on the development of functional disability in RA patients. Results: A total of 2,597 patients (57.2%) were included in the early diagnosis group. The average Health Assessment Questionnaire-Disability Index (HAQ-DI) score was higher in the delayed diagnosis group (0.64 ± 0.63 vs. 0.70 ± 0.66, p < 0.01), and the proportion of patients with no functional disability (HAQ = 0) was higher in the early diagnosis group (22.9% vs. 20.0%, p = 0.02). In multivariable analyses, early diagnosis was independently associated with no functional disability (odds ratio [OR], 1.19; 95% confidence interval [CI], 1.01 to 1.40). In a subgroup analysis according to disease duration, early diagnosis was associated with no functional disability in patients with disease duration < 5 years (OR, 1.37; 95% CI, 1.09 to 1.72) but not in patients with longer disease duration (for 5 to 10 years: OR, 1.07; 95% CI, 0.75 to 1.52; for ≥ 10 years: OR, 0.92; 95% CI, 0.65 to 1.28). Conclusions: Early diagnosis is associated with no functional disability, especial-ly in patients with shorter disease duration.

Role of the 5-HT7 receptor in the effects of intrathecal nefopam in neuropathic pain in rats

Dam, Lee Jae,Hai, Lin,Ha, Yoon Myung Elsevier 2014 Neuroscience Letters Vol.566 No.-

Nefopam is a non-opioid analgesic drug, used widely in European countries to control postoperative pain. However, its mechanism of action remains unclear. In this study, the effects of intrathecal nefopam on spinal nerve-ligated induced neuropathic pain in rats were examined and the involvement of the 5-HT7 receptor at the spinal level was determined. Next, a 5-HT7 receptor antagonist (SB-269970) or descending serotonergic pathway ablation agent (5,7-DHT) was administered intrathecally before delivery of the nefopam to determine the contribution of spinal 5-HT7 receptors or descending serotonergic pathway to the activity of nefopam. The concentrations of 5-HT were measured. Intrathecal nefopam dose-dependently produced the antiallodynic effect. Pre-treatment with intrathecal SB-269970 reversed the antiallodynic effect of the nefopam. 5,7-DHT failed to affect the effect of nefopam. The concentrations of 5-HT in the spinal cord and plasma were decreased in neuropathic pain. Intrathecal nefopam increased the levels of 5-HT in the spinal cord and plasma. Intrathecal nefopam is effective in the attenuation of neuropathic pain induced by spinal nerve ligation and nefopam increases the level of 5-HT. Additionally, the 5-HT7 receptor is involved in the antiallodynic action of nefopam in the spinal cord. (C) 2014 Elsevier Ireland Ltd. All rights reserved.

Model Test of a TLP Type of Floating Offshore Wind Turbine, Part II

Dam, Pham Thanh,Seo, Byoung-Cheon,Kim, Jae-Hun,Shin, Jae-Wan,Shin, Hyunkyoung 한국신재생에너지학회 2011 한국신재생에너지학회 학술대회논문집 Vol.2011 No.11

A large number of offshore wind turbines with fixed foundations have been installed in water depths up to 30 meters supporting 3-5MW wind turbines. Some floating platform concepts of offshore wind turbines were designed to be suitable for deployment in water depths greater than 60 meters. However the optimal design of this system in water depth 50 meters remains unknown. In this paper, a 5-MW wind turbine located on a TLP type platform was suggested for installation in this water depth. It is moored by a taut mooring line. For controlling the wind turbine always be operated at the upwind direction, one yaw controlling was attached at the tower. To study motion characteristics of this platform, a model was built with a 1/128 scale ratio. The model test was carried out in various conditions, including waves, winds and rotating rotor effect in the Ocean Engineering Wide Tank of the University Of Ulsan (UOU). The characteristic motions of the TLP platform were captured and the effective RAOs were obtained.

High-rate, Low-temperature Deposition of Multifunctional Nano-crystalline Silicon Nitride Films

Jae-Dam Hwang,Kyoung-Min Lee,Ki-Su Keum,Youn-Jin Lee,홍완식 한국정보디스플레이학회 2010 Journal of information display Vol.11 No.3

The solid phase compositions and dielectric properties of silicon nitride (SiNx) films prepared using the plasma enhanced chemical vapor deposition (PECVD) technique at a low temperature (200°C) were studied. Controlling the source gas mixing ratio,R = [N2]/[SiH4], and the plasma power successfully produced both silicon-rich and nitrogen-rich compositions in the final films. The composition parameter, X, varied from 0.83 to 1.62. Depending on the film composition, the dielectric properties of the SiNx films also varied substantially. Silicon-rich silicon nitride (SRSN) films were obtained at a low plasma power and a low R. The photoluminescence (PL) spectra of these films revealed the existence of nano-sized silicon particles even in the absence of a post-annealing process. Nitrogen-rich silicon nitride (NRSN) films were obtained at a high plasma power and a high R. These films showed a fairly high dielectric constant (κ = 7.1) and a suppressed hysteresis window in their capacitance-voltage (C-V) characteristics.

Maintenance Priority Index of Overhead Transmission Lines for Reliability Centered Approach

Jae-Haeng Heo,Mun-Kyeom Kim,Dam Kim,Jae-Kun Lyu,Yong-Cheol Kang,Jong-Keun Park 대한전기학회 2014 Journal of Electrical Engineering & Technology Vol.9 No.4

Overhead transmission lines are crucial components in power transmission systems. Welldesigned maintenance strategy for overhead lines is required for power utilities to minimize operating costs, while improving the reliability of the power system. This paper presents a maintenance priority index (MPI) of overhead lines for a reliability centered approach. Proposed maintenance strategy is composed of a state index and importance indices, taking into account a transmission condition and importance in system reliability, respectively. The state index is used to determine the condition of overhead lines. On the other hand, the proposed importance indices indicate their criticality analysis in transmission system, by using a load effect index (LEI) and failure effect index (FEI). The proposed maintenance method using the MPI has been tested on an IEEE 9-bus system, and a numerical result demonstrates that our strategy is more cost effective than traditional maintenance strategies.

Changes in incidence and severity of commercial motorcycle accidents due to the use of delivery service platforms in Korea: a retrospective cohort study

Moon Dam,Jang Jae Ho,Cho Jin-Seong,Choi Jae Yeon,우재혁,Choi Woo-Sung,Hyun Sung Yeol,Lee Seung Hwan 대한외상학회 2023 大韓外傷學會誌 Vol.36 No.2

Purpose: Recently, a sharp increase in the use of delivery services has led to an increase in motorcycle accidents. This study aimed to identify the characteristics of the commercial motorcycle injured patients and factors related to the severity during the past 10 years. Methods: Patients (15–64 years old) who visited the emergency department with commercial motorcycle accidents injury registered in the Korean Emergency Department-based Injury In-depth Surveillance (2011–2020) database, were included. All included cases were categorized into two groups according to the period: group 1 (2011–2015) and group 2 (2016–2020). General characteristics and the factors associated with severity were investigated. Results: Among 8,123 emergency department visits, patients in group 1 were 3,071, and patients in group 2 were 5,052. The odds for severity were affected by patients age (odds ratio [OR], 1.008; 95% confidence interval [CI], 1.004–1.013), and overnight/morning (00:00–12:00; OR, 1.243; 95% CI, 1.091–1.415). The odds for severity were higher in head and neck injury (OR, 8.357; 95% CI, 7.410–9.424) and torso injury (OR, 4.122; 95% CI, 3.610–4.708). The odds for the severity of accidents based on excess mortality ratio-adjusted Injury Severity Score (EMR-ISS) after 2015 were significant (OR, 1.491; 95% CI, 1.318–1.687). Hospitalization in the intensive care unit and death were associated with accidents after 2015 (OR, 2.593; 95% CI, 2.120–3.170). Conclusions: Commercial motorcycle accidents have increased significantly over the past decade. There were statistical differences in severity based on EMR-ISS and the hospitalization in intensive care unit and death.