Graphs with fixed number of pendent vertices and minimal Zeroth-order general Randic index

Su, G.,Tu, J.,Das, K.Ch. Elsevier [etc.] 2015 Applied Mathematics and Computation Vol.270 No.-

We investigate the graph with minimal Zeroth-order general Randic index in terms of its order n, pendent number N<SUB>1</SUB> and cyclomatic number γ ≥ 0. Extremal graphs were completely characterized for cases of γ=0,1,2, which can be directly extended for graphs with cyclomatic number γ ≥ 3.

갱년기 증상에 대한 생활 스트레스의 영향

정숙형,조성수,최석,성낙진,박기흠 大韓家庭醫學會 1997 Korean Journal of Family Medicine Vol.18 No.2

문화원형을 중심으로 한 문화콘텐츠 기술개발에 관한 연구

정석규 호남대학교 2004 호남대학교 학술논문집 Vol.25 No.2

As people get to have economic abundance and spare time, they get to have more desire on mental and emotional things. So the importance of cultural contents is getting more and more important. In order to activate cultural contents, cultural archetype-related technologies are essential, and through this technical guidance, the current situation of cultural archetype-related technologies is examined, and it is predicted how such technologies need to be developed. Currently, in order to strengthen the competitiveness of contents in the world markets, each country is making efforts to create contents that can be accepted in the whole world. In this situation, it is possible to develop competitive contents in the world when various contents, which utilize our own unique cultural inheritances, are generated. So we can say that cultural archetype-related technologies, which make it possible to find and apply digitized cultural archetypes, are essential technologies to preoccupy the world contents markets.

2차 및 3차 병원에서 분리된 균종들에 대한 항생제 감수성

이숙경,장명웅 고신대학교 의학부 1999 高神大學校 醫學部 論文集 Vol.14 No.1-2

Objective : This study was carried out to compare the isolation rates of antibiotic resistant bacteria between the secondary hospital (B) and the tertiary hospital (P). Materials and Methods : The 3,813 strains of bacteria were isolated from various specimens in the B and P hospital. Antibiotic susceptibility test was performed by disc diffusion method with ampicillin, carbenicillin, cefamandole, cefotaxime, ciprofloxacin, gentamicin, imipenem, ampicillin-sulbactam, trimethoprim-sulfamethoxazole, cephalothin, ceftazidime, piperacillin, amikacin, tobramycin, vancomycin, erythromycin, oxacillin, penicillin, and clindamycin. Result : The major pathogenic bacteria with high isolation rate in both the B and the P hospital were E. coli, K pneumoniae, S. aureus, and P. aeruginosa. The isolation rate of E coli, a resistance to cefamandole, ciprofloxacin, gentamicin, ampicillin-sulbactam, and trimethoprim-sulfamethoxazole was attentively higher in the P hospital than in the B hospital. The isolation rate of K. pneurnoniae, a resistance to ampicillin, carbenicillin, ciprofloxacin, gentamicin, ampicillin-sulbactam, and trimethoprim-sulfamethoxazole was attentively high in the P hospital. The isolation rate of S. aureus, a resistance to ampicillin-sulbactam, cephalothin, tnmethoprim-sulfamethoxazole, oxacillin, and enicillin was attentively high in the P hospital. The isolation rate of P. aeruginosa, a resistance to gentamicin, imipenem, and amikacin was attentively high in the P hospital. The isolation rate of S. epidermidis, a resistance to ampicillin-sulbactam, cephalothin and trimethoprim-sulfamethoxazole was attentively high in the P hospital. The isolation rate of P. mirabilis, a resistance to cefamandole, cefotaxime, gentamicin, trimethoprim-sulfamethoxazole and cephalothin was attentively high in the P hospital. Conclusion : The isolation frequency of the antibiotic resistant bacteria from the P hospital was higher than that of the B hospital. These results demonstrate that the isolation frequency of the antibiotic resistant bacteria from both B and P hospital showed some difference according to the kinds of antibiotics and bacterial strains. These results attracted our attention to use of antibiotics, and it is urgent to arrange a countermeasure against the abuse of the antibiotic agents.

중·저층 RC 구조물의 내진성능 평가

정석창 부천대학 2001 論文集 Vol.22 No.-

본 연구의 목적은 우리나라 중저층 철근 콘크리트 구조물의 내진성능을 평가하기 위함이다. 우리나라에서는 아직 중저층 구조물의 내진성능을 평가할 수 있는 절차가 확립되어 있지 않다. 따라서 본 연구에서는 차세대 내진설계법으로 분류되고 있는 미국의FEMA 273과 ATC 40의 내진성능 평가방법을 연구하고 이를 통하여 국내 중저층 철근 콘크리트 구조물의 내진성능을 평가하고자한다. 구조물의 내진성능 평가에서 구조물의 비탄성 내력은 비탄성 정적해석 프로그램으로 잘 알려진 DRAIN-2DX를 이용하였으며 구조물의 내진성능은 층간변위와 각 부재에서의 소성회전 능력을 검토되었다. The purpose of this study is to investigate the procedure for the seismic performance evaluation and apply it to low-rise reinforced concrete building in KOREA. In this study, the procedure proposed by ATC 40 and FEMA 273 was used to evaluate the aseismic capacity of low-rise RC buildings because there is nearly no systematic method in our country. The analysis was carried out using well-known inelastic analysis program, DRAIN-2DX and its result was converted to capacity spectrum and compared with demand spectrum. As a result, the performance point was obtained and at that point, the global and local component member was checked to evaluate the seismic capacity of low-rise reinforced concrete buildings.

입자-구멍배위와 42Ca, 42Sc, 및 42Ti 원자핵의 에너지 스펙트럼

심숙이,김문원 公州大學校 基礎科學硏究所 1996 自然科學硏究 Vol.5 No.-

Shell-model calculations are performed to investigate the level structure in ??, ?? and ?? Nuclei. The shell model states are expressed for two-particle, particle-hole and three-particle one-hole configurations in terms of coupled two-particle states. We have used the modified surface-delta interaction, pairing and Coulomb interaction in this calculation. The configurations considered are ??, ?? and Single-particle energies and parameters of the interaction are determined by least-squares fitting procedure. The resulting two-body matrix elements are applied to calculate the energy spectra of two-particle states and three-particle one-hole states in ??, ?? and ?? Nuclei.

RBAC 보안시스템에서 관계관리를 위한 관리도구 동작

오석균,김성열 한국정보전략학회 1999 추계공동학술대회 논문집 Vol.- No.01

Role-Based Access Control(RBAC)은 처리과정 오류를 줄이는 것처럼 접근통제 정책의 관리단가를 낮춰준다. RBAC 개념에서 가장 중요한 요소가 관리도구이다. RBAC 보안시스템을 위한 관리도구는 RBAC 데이터베이스에 저장되어 있는 사용자와 역할 관계를 일관성 있게 유지하여야 한다. 본 논문에서는 사용자-역할과 역할-역할 관계를 관리하기 위한 형식 명세를 제안한다. 제안된 형식 명세는 관계 집합처럼 정의된 RBAC 데이터베이스를 위해 일관성 요구를 유지한다. 본 논문은 동작의 형식 명세화를 함으로써 RBAC 관리도구의 구현을 쉽게 이끌어 낼 수 있다. Role Based Access Control(RBAC) reduces the cost of administering access control policies as well as making the process less error-prone. The administration tool is most important component in the concept of RBAC. The administration tool for the RBAC security system is required the consistency of a relationships between user and role in the RBAC Database. In this paper, we propose formal specification in order to manage user-role and role-role relationships. The proposed formal specification leads to the consistency requirements for the RBAC database which are defined as a set of relationship. This paper can easily derive the implementation of the RBAC administration tool by formal specification of operations.

0.2% 불화나트륨 용액으로 5년간 양치한 초등학교 아동의 영구치 우식증 예방효과

손석환,이재화,김지영,김진범 대한구강보건학회 2003 大韓口腔保健學會誌 Vol.27 No.2

Supervised weekly fluoride mouthrinsing(FMR) program with 0.2 percent neutral sodium fluroide solution has been implemented at primary schools in Pusan, Korea since 1995 to prevent the prevalent dental caries. Children of sixth grade in 2000 who had joined the weekly FMR program at four primary school in Pusan with a 0.2 percent sodium fluoride solution for five years from first grade in 1995 to fifth grade in 1999 were selected as experimental group. Children of sixth grade in 2000 who had not joined the FMR program until sixth grade and had not drunk fluoridated pulic water at two primary schools in the Bukgu(Norhtern) District of Ulsan were selected as control group. Samples were 295 in FMR group and 312 in control group. To estimate caries preventive effect, epidemiologic dental survey was performed at the schools of FMR and control group in 2000 for 11-year-old children. The surveyed data were analyzed with SPSS statistical package. The obtained results were as follws. 1. Children who experienced caries on permanent teeth were 71.2% in FMR group and 83.3% in control group. 12.1% of DMF rate decreased in FMR group compared to control group. 2. The DMFT scores were 2.68 in FMR group and 3.29 in control group. The difference of DMFT scores was 0.61 between fluoride mouthrinsing group. The caries reduction rate from 5-year FMR program was calculated as 18.5% by the difference of DMFT scores between FMR group and control group. 3. The DMFS scores were 4.04 in FMR group and 5.05 in control group. The difference of DMFS scores was 1.01 between FMR group and control group. The caries reduction rate from 5-year FMR program was calculated as 20.0% by the difference of DMFS scores between FMR group and control group. 4. Significant Caries Index of permanent teeth was 5.46 in FMR group and 6.02 in control group. 5. We suggest that fluoride mouthrinsing program should be developed to all primary schools to prevent dental caries.

월경(越境)하는 정체성 : 제일한인, 민족, 그리고 '우리' Koreans in Japan, Nation, and 'We'

권숙인 中央大學校 民族發展硏究院 2002 民族發展硏究 Vol.- No.7

신경주위 전파를 수반한 유선낭종암

임숙영,최은숙,김민숙,고광준 大韓口腔顎顔面 放射線學會 1992 Imaging Science in Dentistry Vol.22 No.2

This is a report of adenoid cystic carcinoma occurred in the palate in 30-year-old patient with a complaint of exophytic mass. The authore dignosed it as adenoid cystic carcinoma by the clinical examination, radiographic findings and histopathological findings. The obtained results are as follows ; 1. In clinical examination, asymptomatic exophytic mass of palate was observed. 2. in radiographic findings, soft tissue mass infiltrated the left maxillary sinus, nasal cavity, infraorbital fossa, hard palate, pterygopalatine fossa and pterygoid plate, and enhanced soft tissue mass was also observed in CT. 3. In histopathological findings, tubular and solid patterns of glandular structures were observed and the infiltration of tumor cells into the nerve fibers was also observed. 4. Two years after radical surgery, radiation therapy and chemotherapy, the perineural spread to orbital area was observed. 5. Much longer follow-up than 5 years in needed for early diagnosis off recurrence and distant metastasis.