TCP와 UDP 트래픽의 통합 스케줄링 알고리즘에 관한 연구

강정하,김은기 한밭대학교 산업과학기술연구소 2001 논문집 Vol.5 No.-

In this paper, we propose a new scheduling algorithm that provides fair scheduling method for TCP and UDP traffic. A router in network calculates target traffic rate for each flow when it starts packet drop. Then the router increases drop rate for flows that generate more traffic than target traffic rate. The TCP friendly flows reduce sending rate in response to increment of drop rate. But, the flows that do not follow TCP congestion control send their own traffic regardless of packet drops. The drop rate of unresponsive flow is increased more and more at router and consequently bandwidth is assigned fairly to all flows.

수행 평가 도구를 이용한 심화·보충형 수준별 교수 전략 개발 : 과학 3의 물질의 구성 Composition of Matter Section in Science 3

강순희,김지영,박은미,이윤하 이화여자대학교 사범대학 교과교육연구소 2005 교과교육학연구 Vol.9 No.2

제7차 교육 과정의 과학 교과에 대한 심화·보충형 수준별 수업 전략을 개발하여 현장 과학 교사들에게 구체적인 도움을 주고자 하는 것이 본 연구의 목적이다. 수업 운영 형태는 동일 학급 내 교과 수준별 분단 편성이며, 연구된 구체적인 단원은 중학교 과학 3의 ‘물질의 구성’ 단원으로 총 17차시가 소요된다. 먼저 현실적으로 중등 과학 교육 현장에서 실현 가능한 과학과 수준별 교육 과정에 관련된 이론적 배경을 고찰하였다. 둘째, ‘물질의 구성’ 단원에 대하여 차시 수업의 목표로 사용 가능한 구체적인 성취 기준을 지식, 탐구, 태도 영역으로 개발하였다. 셋째, 앞에서 개발한 성취 수준의 도달 정도를 판별하는 평가 기준을 개발하고, 이 성취 수준과 평가 기준을 토대로 하여 동일 학급 내 과학 교과 수준별 분단 편성을 위한 진단 평가 도구들을 개발하였다. 넷째, 이 진단 평가 도구에 의하여 학생들을 수준별 소집단 분단으로 분류하는 구체적인 방법을 제시하였다. 마지막으로, 각 동일 학급 내 수준별 분단에 사용할 수 있는 보충 활동지를 개발하였으며 사용하는 방법을 제시하였다. The purpose of this study is to development of instructional strategy for differentiated curricular by enrichment and supplementary instructions about junior high school science under the 7th National Curricular Revision. The ability grouping for differentiated curricular in this study was within class ability grouping in same year. The composition of matter in junior high school science 3 was selected for this study and analyzed to develope the detailed achievement standards and assessment standards of school class level for science teacher. Based on those detailed achievement standards and assessment standards of school class level, the concept clusters of the composition of matter section was classified. The diagnostic evaluation which was the performance assessment tools according to the concept clusters was developed to classify for enrichment and supplementary groups. Also the method of classification about enrichment and supplementary groups in science class was suggested in details. Finally, teaching and learning materials for supplementary groups according to the concept clusters were developed about the composition of matter section in science 3 at junior high school.

안모의 성장유형에 따른 경부견인 헤드기어의 효과에 대한 두부방사선계측학적 연구

강은하,장종언 대한치과교정학회 1999 대한치과교정학회지 Vol.29 No.4

이 연구의 목적은 II급 부정교합의 치료를 위해 경부경인 헤드기어(cervical pull headgear)를 사용할 때, 치료에 불리한 요인으로 작용한다고 언급되는 효과들이 실제로 발현되는지의 여부와 안모의 성장유형에 따라 그 차이가 존재하는지를 알아 보고자 함에 있다. 이를 위해서 삼성서울병원 치과교정과에서 II급 부정교합으로 진단되어 경부견인 헤드기어로 치료받은 환자중, 성장기에 있으면서 비발치 치료를 받은 환자를 연구대상으로 선별하였다. 그리고 연구대상을 “ 후안면/전안면 고경비 ”에 따라 수직성장군과 수평성장군으로 분류하였다. 수직성장군 15명(남자5AID, 여자10명)과 수평성장군 11명(남자4명, 여자7명)의 치료전, 후의 두부방사선규격사진상에서 SN-PP angle. SN-GoGn angle, SN-MP angle, PFH/AFH ratio, SN to 6, PP to 6 등을 계측하고, 비교분석하여 다음의 결과를 얻었다. 1) 수직성장군에서 구개평면이 전하방으로 경사되었다. 2) 수평성장군에서 후안면/전안면 고경비가 증가하였다. 3) 수직성장군과 수평성장군 모두에서 하악평면각은 변화하지 않았다. 4) 상악대구치의 정출양에 있어서 수직성장군과 수평성장군의 차이는 없었다. The purpos of this study is to investigate the negative effects of cervical pull headgear and to compare the differences between the two groups of growers-vertical grower and horizontal grower group-which are classified by the posterior-anterior facial height ratio. Initial and final lateral cephalograms were taken for 26 patients including 15 vertical growers and 11 horizontal growers : also, 3 angular measurements and 4 linear measurements were evaluated. The following results were found. 1. The palatal plane was tipped anteroinferiorly in the vertical grower group. 2. The posterior facial height/anterior facial height ratio was increased in the horizontal grower group. 3. The Mandibular plane angle remained stable on both groups. 4. There was no significant difference between the two groups in the amount of maxillary molar extrusion.

건강증진학교 모형개발 : Based on Health Center of University 대형 보건소 활동을 중심으로

하은희,조희숙,윤영옥,강명근 韓國學校保健學會 2001 韓國學校保健學會誌 Vol.14 No.1

Objectives: The purpose of this study is to develop a health-promoting program centered on the university-health center and to provide a developed program for students and faculties. Methods: A survey was conducted of 719 female students and 238 faculties concerning their health-promoting programs. Based on the results of the survey, we developed programs that could be applied to students and faculties. After operating the programs, we developed further models by evaluating the effectiveness and satisfaction. Conclusions: We selected a comprehensive health-promoting program that included weight control, preventive inoculation, sex education and control of disease based on repsective needs. We also applied programs developed through collaboration with other departments from September 1998 to August, 1999. Users of the preventive inoculation-program increased by one point five during the year. Also, participants were generally satisfied with the weight control program and succeeded in reducing weight We hope that we can set up this program and expand it by developing various other projects in Korea. Key Words: Modeling, Health-Promoting School, Health Center of University

전국 단위 감시체계의 현황과 전망

강성규,안연순,지영구,김형옥,하미나,권호장,백남종,김성아,홍윤철,김재용,강대희,정혜선,하은희 대한산업의학회 2001 대한직업환경의학회지 Vol.13 No.2

음양곽과 함초의 간독성에 대한 연관성

하배진,남천석,박은경,강금석 신라대학교 자연과학연구소 2006 自然科學論文集 Vol.15 No.-

In the present study the hepatoprotective and antioxidative effects of Epimedium koreanum (EK) and Salicornia herbacea (SH) were investigated against carbon tetrachloride (CCl_(4))-induced liver damage in rats. EK and SH (100 mg/kg) were administered into rats intraperitoneally (i.p) for 2 weeks. After CCl_(4) a dose of 3.3ml/kg was administered to induce hepatotoxicity. This antioxidative effects of EK and SH on CCl_(4) -treated rats were measured through the activity of Aspartate aminotransferase (AST), Alanine aminotransferase (ALT) in serum and Superoxide dismutase (SOD), Catalase (CAT) in liver tissue. EK or SH-administered and CCl_(4) -treated (ECT or SCT) groups showed inhibitory effects in AST and ALT activities compared to CCl_(4) -treated control (CTC) group. SOD and CAT in ECT and SCT groups were increased compared to those of CTC group.

정신감정의뢰된 범법정신질환자들의 일반적인 특징의 변화 : Comparison Between 1971-1976 and 1987-1992 16년간의 비교

박강규,박재하,정은기 大韓神經精神醫學會 1994 신경정신의학 Vol.33 No.5

저자들은 사회문화변천에 따른 범법정신질환자들의 일반적인 특징과 이들에 대한 사회의 인식 및 태도의 변화를 알아보기 위하여 국립서울정신 병원에 정신감정의뢰된 범법피의자들중 감정결과 정신질환자로 진단된 1971년 1월 1일부터 1976년 12월 31일까지의 128례(A군)와 1987년 1월 1일부터 1992년 12월 31일까지의 189례(B군)를 대상으로 병록지 및 감정기록서를 조사 비교분석하여 다음과 같은 결과를 얻었다. 1) 성별분포에서 남녀비가 5.7:1과 2.4:1로 여자의 비율이 높아졌고, 교육정도는 국졸 이하가 감소하고 고퇴ㆍ고졸은 증가했다. 대도시 거주자가 증가하고 농ㆍ어촌 가주자는 감소하였다. 2) 질환별 분포에서 정신분열증은 유의하게 감소한 반면 우울증은 증가하고 알콜 및 약물중독 등 기타 질환군이 추가되었다. 3) 범죄내용에서 강력범, 폭력범, 재산범이 양군 모두에서 대부분이었는데 이중 살인은 감소하고 강도ㆍ강간 및 절도는 증가하였으며 보안법위반은 감소하였다. 4) 법행대상중 직계가족과 이웃ㆍ친지는 감소하고 타인은 증가하였으며 정신분열증의 살인대상은 이에 차이는 없었다. 5) 범행동기중 망상ㆍ환각, 퇴행적 미분별은 감소하고 발작적 충동은 증가하였다. 정신분열증에서는 망상ㆍ환각에 의한 범행이 가장 많았으나 양군사이에 차이는 없었고 발작적 충동에 의한 경우가 증가하였다. 6) 보호자인식 및 태도에서 과거 정신의학적 치료경험이 있었던 경우와 범행이 임박했을 즈음에 치료적 시도를 취한 경우가 증가했다. 이상의 결과로 보아 사회문화변천의 영향에 의해 범법정신질환자들의 일반적인 특징이 변하며 이들에 대한 사회의 인식과 태도에 긍정적인 변화가 있었음을 알 수 있었다 The purpose of this study is to investigate the change of characteristics of mentally ill criminals in legal case. The authors reviewed the medical records and additional data of 317 mentally ill criminals who had been referred to Seoul National Mental Hospital from Jan. 1971 to Dec. 1976(128 cases) and from Jan. 1987 to Dec. 1992(189 cases). The data obtained were analyzed in terms of several aspects ; demographic background, clinical diagnosis, features of crime, family attitude and recongnition. The results could be summarized as follows : During the past sixteen years, 1) As to demographic background, the frequency of female, high school graduated and urban residents were increased. 2) As to clinical diagnosis, the frequency of schizophrenia was decreased, whereas the frequency of depression was increased and alcohol or drug abuse et al were added. 3) As to types of crime, the frequency of homicide and violation of anticommunism law were decreased, whereas the frequency of larceny, rape and burglary were increased. 4) As to victims of crime, the frequency of stranger was increased. 5) As to motivations of crime, the frequency of impulsivity was increased, whereas the frequency of regressive misdiscrimination, delusion and hallucination were decreased. 6) As to family's recognition and attitude, the frequency of the previous history of psychiatric treatment and therapeutic try were increased. With the above results, the authors think that changes of characteristics of mentally ill criminals were attributed to the socio-cultural changes, and family's recognition and attitude changed into positive way.

정신과 환자가족의 스트레스와 대처방법과의 상관관계 연구

이강오,김은하,백영주 朝鮮大學校 附設 醫學硏究所 1991 The Medical Journal of Chosun University Vol.16 No.2

This study was attempted to analyze the correlation between stress and coping method of the families of psychiatric patients. The subjects of this were 134 family members selected from psychiatric wards at 2 University Hospitals and 1 Psychiatric Clinic in Kwangju, and National Psychiatric Hospital in Naju Gun. Data was collected from July 18 to August 31, 1990, by the questionaire method. The instruments used the Stresds Rating Scale developed by the researcher and the Coping Scale by Jalowiec and Powers. The data were analyzed by t-test, ANOVA and Pearson's Correlation Coefficient. The results of the study were as follows; 1. Average total stress score of subject was 100.99. Stress factors were classified into seven, and their order of getting score was; information(3.28), family prob1ems(3.20), treatment and nursing care(3.15), financial problems (3.10), Patient's illness(2.97), interpersonal relationship and communication (2.97), and unfamiliarity surroundings(2.74). 2. Average total coping score of Subject was 98.84. Subject rated problem oriented coping methods (3.20), significantly higher in degree of use than affective oriented coping method(2.52). 3. The relationship between stress score and coping score was significantly positive correlation (r=. 3024, P=.000).

방광의 이행상피암에서 p53과 PCNA 분포에 관한 연구

최은정,강상균,양승하,김대중,김의한 순천향의학연구소 1996 Journal of Soonchunhyang Medical Science Vol.2 No.2

Immunohistochemical studies were carried out to observe the expression of p53 protein and PCNA in transitional cell carcinoma (TCC), then analyzed according to the tumor grade and progression. 38 cases of TCC consist of 13 cases grade Ⅰ, 12 cases grade Ⅱ and 13 cases grade Ⅲ respectively. Results obtained are as follows. 1. p53 protein expression was seen in 60% of cases(15 out of 38 cases) In the poorly differentiated area and infiltrated lesion, tumor cell showed more strong positive reaction of p53 protein compared with well differentiated area. 2. All of 38 cases of TCC showed PCNA positive expression. The more strong positivity was seen in the poorly differentiated area and the more intense positive reaction was noted in the basal layer of the tumor nests. 3. The above results showed that positivity of p53 protein and PCNA are closely related with tumor cell differentiation(grade) and progression. It is concluded that positive reaction of p53 protein and PCNA may contribute to detection of tumor growth and prognosis of patient.

p-형 Si(100) 기판 위에 성장시킨 Bi_(3.25)La_(0.75)Ti₃O_(12) (BLT) 박막의 전기적 특성

최은경,박문흠,김현주,하태곤,강민주,김상수 昌原大學校 基礎科學硏究所 2003 基礎科學硏究所論文集 Vol.15 No.-

Bi₃zsLa(0.75)Ti₃0_(12) (BLT) thin film have been grown on p-type Si(l00) substrates by a sol-gel spin coating process. The structure and surface morphology of the film were analyzed by X-ray diffraction (XRD) and scanning electron microscopy (SEMI. Furthermore, the electrical properties were examined by capacitance-voltage ( C-V) characteristics by using a LF Impedance Analyzer(HP 4192A). XRD measurement show layered perovskite structure with a single phase in BLT thin film annealed at 700C for 30 min in oxygen. The measured grain size of BLT on Si is about 0.04 - 0.1 pn. From the cross-sectional SEM image, BLT film thickness is measured to be 0.4 pm. The C-V characteristic hysteresis curves show that the NIFS (metal-fexroelectric-semiconductor) structure has memory effect. The memory window decreases, with increasing frequency at MFS structure. And it is found that the memory window increases as the applied voltage to the ferroelectric capacitor is increased. These phenomena may be due to polarization reversals of the BLT ferroelectric film and because of the charge injection from Si substrate into the ferroelectric thin film. The results obtained indicate that the present BLT films are suitable for making ferroelectric field effect transistor(FeFET) memory.