마이크로셀시스템의 적응 채널할당 기법

문영성,이종찬 崇實大學校 生産技術硏究所 1996 論文集 Vol.26 No.1

PCS(Personal Communications Systems) where the cell structure is microcell can accommodate more subscribers than those of cellular systems where the cell structure is macrocellby reducing the cell fadius. To cope with such differences in PCS environment, new channel allocation and handover shcemes for PCS are needed. In this paper, problems which may arise when channel allocatio scheme of cellualr is applied to PCS is firstly analyzed. To overcome such poblems, a new schem is proposed. Also, a new handover scheme for PCS is propsoed. Performance of propsoed schemes is analyzed and compared with other channel allocation schemes and handover schemes. Blocking probability and forced call termination probability are used as performance parameters.

플라이애쉬와 머드를 대체 혼입한 콘크리트의 특성에 관한 실험적 연구

안문기,이정섭,송하영,김을용 大田産業大學校 2002 한밭대학교 논문집 Vol.19 No.-

The purpose of this study is to inverstigate the influence of proportioning methods of fly ash and mud on the workability and the engineering properties of concrete. The main part of this experiment is the comparison and analysis of the basic properties of the concrete replaced and mixed with fly ash and mud. The test items are compressive strength and non-destructive test in hardened concrete, also slump, flow, air contents and mixing temperature in fresh concrete according to W/c, replacement ratio of fly ash and mud. The test results are as follows ; 1) As the increase of replacement ratio of fly ash and mud, the workability of concrete is decrease as compared with the plain concrete. 2) As the increase of replacement ratio of fly ash and mud, the compressive strength of concrete is increase as compared with the plain concrete and the non-destructive test results of concrete are better than the plain concrete.

실시간 대응을 위한 정책 기반의 보안 기술에 관한 연구

김미영,문영성 崇實大學校 生産技術硏究所 2002 論文集 Vol.32 No.-

The wide variety of information is heavily being exchanged through the internet bue to end the explosive growth of the number of internet users. The generalization of IT knowledge makes the user to approach and use information with little effort. The users can be classified into the normal users and abnormal(hostile) users. Particularly, hostile users of the in-depth knowledge about internet and armed with automated and intelligent tools may misuse or destroy valuable information. As the value of information is more important, the attack to the high-valued information is also increasing. However, the research on the technology to detect and respond to it against the attacks is in its initial stage. In this paper, we describe the policy-based security technology which enable the real-time detection and effective response to the attacks.

농업인 평생학습체계 구축을 위한 농업인교육 발전방안 연구

정철영,송병국,김진모,문택석,허영준,주대진,최수정,한승완 한국농업교육학회 2008 농업교육과 인적자원개발 Vol.40 No.2

이 연구의 목적은 우리나라 농업인의 평생학습체계 구축을 위한 농촌진흥기관의 역할을 정립하고, 한국농업대학의 농업인대학 운영 본부화 방안을 수립하는데 있다. 이를 위해 관련 문헌고찰, 농업인 및 농촌진흥기관의 농업인 교육 담당자들의 인식 및 요구분석, 전문가 자문 및 협의회 등의 방법을 활용하였으며, 이를 토대로 도출된 연구의 결과를 제시하면 다음과 같다. 첫째, 농촌진흥기관의 농업인교육관련 연계를 위해서는 한국농업대학이 농업인평생교육기관으로 평가인정을 받고, 전국의 농업인대학을 총체적으로 지원하는 역할을 수행하는 것이 바람직하다. 이때 지역의 농업기술센터는 한국농업대학과 협력적 관계를 구축하여 학점은행제 운영에 소요되는 교육 및 이력관리를 지원하는 역할을 수행하는 것이 필요하다. 둘째, 한국농업대학의 농업인대학 운영본부화를 위하여 평생학습원의 조직이 추가되는 것이 바람직하다. 이에 따라 평생학습원의 비전, 미션 및 전략이 제시되었으며, 조직의 기능 및 세부과제가 제시되었다. 셋째, 농업인교육의 학점은행제를 도입을 위한 체계를 설정한 후, 농업관련 기존 표준교육과정 분석, 농업인 요구분석, 전국 농업인대학 교육과정 분석, 기존 농업관련 전공 교육과정 분석, 전문가 검토 등의 과정을 거쳐서 '영농 전문학사'와 '농업 경영 학사'의 표준교육과정을 개발하였다. 넷째, 고졸미만 농업인을 위한 사전학습제도화를 위하여 농업인교육의 평가인정을 통한 방안과 One-Stop 평생학습모델을 통한 방안을 제시하였다. The purposes of this research were to assign the role of rural development organizations, and to establish the strategy for the making headquarter of farmer's university. The study was performed as follows: (1) analyzing the related literatures, documents, records review, (2) need analysis of farmers and members ig rural development organizations in terms of farmer's lifelong learning, (3) consulting experts. The following four findings are the results of this study: (1) Korean national agricultural college should be headquarter of farmer's universities and be approve for lifelong learning credit. Also, agricultural technology & extension centers should run educational program for the lifelong learning credit. (2) For the doing role of headquarter of farmer's university, division of lifelong learning should be add to department of technology training in Korea agricultural college. In relation with this, vision, mission and strategy of division of lifelong learning were suggested. (3) Steps for introduction of credit bank system of farmer education were suggested. Also standard curriculums of 'farming associate degree' and 'agricultural management bachelor's degree' were developed through analyzing existing standard curriculum related with agriculture, analyzing need of farmer, analyzing curriculum of farmer's university, analyzing curriculum of agriculture major. (4) For farmer who do not have high school graduate, two solutions were suggested which are approving farmer's education and one-stop lifelong learning model.

NaNO₂의 N 핵사중극 공명 연구

박영민,송승기,강재필,서용문 명지대학교 자연과학연구소 1995 자연과학논문집 Vol.12 No.-

펄스형 핵사중극 공명장치(Pulsed system)를 이용하여 상온에서 NaNO? 분말시료의 위와 아래 공명진동수, 핵사중극 결합상수, 비대칭인자와 스핀-스핀완화시간을 구하였다. FID공명선으로부터 구한 값은 υ+=4.6354 NHz/ υ-=3.5983 MHz, e?qQ/h=5.4891 MHz와n=0.3779이었다. 90?,ι, 180? 펄스연속(spin-echo 신호)과 r를 변화시켜 얻은 진폭을 이용하여 스핀 -스핀 완화시간 T2를 측정하였다. 이결과 υ(T?)=2.50ms, υ-(T?)=2.17ms임을 보였다. Measurements of the upper and lower resonance freqency, quadrupole coupling constant, asymmetry parameter and spin-spin relaxation time are reported for NaNO? powder sample by using the pulsed NQR system at room temperature.From FID line-shapes, we obtained υ=4.6354 MHz, υ=3.5983 MHz, e?qQ/h=5.4891 MHz and η=0.3779. The spin-spin relaxation time T? was maesured using a 90?,ι, 180? pulsed sequanco (spin-echo signals) and varying τwhile measuring the amplitude of the echo. The result showed υ+(T?) =2.50 ms and υ+(T?) =2.17ms.

CFT용 초고강도 콘크리트를 이용한 실물대 실험

손영준,송인명,양동일,정근호,정상진,최문식 대한건축학회 2004 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.24 No.1(구조계)

The column for Steel Framed Reinforced Concrete Structure (SFRCS) and the column for Reinforced Concrete Structure (RCS) could be the most common building structure. The increasing of the need for massive space hasaffected the size of building components for supporting the massive structure. However, the changing of components size makes inefficient space of building. Hence, to meet the need for acquiring efficient space comparing the budget and cost the new structure method, Concrete Filled Tube Steel (CFT), was developed. CFT is the structure for which steel tube instead of other materials such as wood for holding concrete is used. The most benefit of this one is to help in reducing the size of the building components and local buckling because of tube steel holding concrete. For this reason, this research will examine the probability of applying CFT on construction sites by using the concrete (800kg/cm2) especially for CFT through the data from the real size mock-up.

2급 응급구조사의 성인외상환자에 대한 처치의 적절성 평가

장문수,어은경,김상현,김창섭,송근정,박한규,유지영,최동섭 대한응급의학회 1995 대한응급의학회지 Vol.6 No.2

In Korea, EMT have two classified subgroup of first and second degree : EMT-P, and EMT. For the beginning, authorization of the first EMT was made in this year through the EMT educational program. There are 8 items which EMT can perform the treatment without the supervision by a physician. But there was no previous report of pertinent assesment of treatment performed by the EMT. There upon authors have conducted review of assessment done by the EMT in EC setting, and proposed the following treatment application can be used by EMT at the field of accident. The study materials include adult trauma patient older than 15 years, and sustained trauma within 48 hours before visiting Ewha University DongDaeMoon Hospital Emergency Deparment. The duration of study was from Apr. 1 1995 to Aug. 31 1995. the study was conducted by 5 certified EMT. The EMT's performance was evaluated by the attending Emergency Medicine physician. The result were as followings ; 1. Among the total 5532 ED visiting patients during the study period, 1267 were adult trauma patients who recieved treatment within 48 hours of injury. 2. Among 1222 out of 1267 patients have completed performed survey. 3. Male to female ratio was 2.6 : 1, age distribution was from 15 to 87 years old and mean age was 34.6 years old. 4. The MOI showed : MVA (33.1%), blunt trauma (29.9%), slip down (16.8%), penetrating injury(15.4%), and miscellaneous (5.7 %), burn (3.1%), falling down injury(2.9 %), bite injury(1.1%) in order. 5. There were 437 cases of survey completed by the EMT. For assessment of mental status of 3 different method : AVPU, 5 scale mental status and GCS, were correlated with EM physician with 99.1%, 98.6%, 97.7 %, respectively. 6. For 320 out of 437 cases of survey completed, 319 patients recieved treatment by the EMT within 30 minute and 1 patient between 30 to 60 minute of an ED arrival. 7. For those 437 cases of survey completed, 266 patient (60.9%) had adequate treatment and 54 patients (12.4%) had inadequate treatment. 67 patient (15.3%) did not received treatment but it was adequate inway, and 50 patients (11.9%) did not received treatment even though patient required treatment. In cases of adult trauma patients, EMT's mental status assessment was correlated with EM physician's assessment. But treatment done by EMT without the supervision of EM physician was adequate only in 76.2 %. Therefore, continuous education and assessment of treatment performed by EMT in needed to improve field treatment by EMT future.

전주산업단지 및 주변지역 VOCs 및 악취물질 모니터링

김용문,박비오,고영삼,심재정,송병식,양고수 전북대학교 공학연구원 ( 구 전북대학교 공업기술연구소 ) 2002 工學硏究 Vol.33 No.-

Important main odorous compounds and VOCs(volatile organic compounds) possibly emitted from the Jeon-Ju Industrial Sites were identified and measured in amount through making air sampling over Jeon-Ju Industrial Sites and analyzing them with the sate of the art analytical instrument. Sampling sites were chosen 8 points by considering the industrial characteristics for the 1,2 Industrial Sites and 2 points for the 3 Industrial. Site Sampling times were two times, the first one was March. 2002 - April. 2002, and the second was May. 2002 - July. 2002. Canister sampling units and polyester bags were used to collect 6 liters air samples during 1hour or 3minutes for VOCs and polyester bags were used to sample 10 - 50 liters of air for 3 minutes depending on analytic characteristics of odor compounds. The important main VOCs were measured as acetone, ethyl benzene, n-hexane, m,p-xylene, toluene, M.E.K.(methyl ethyl ketone), isopropanol, ethyl acetate, o-xylene, n-butyl acetate, ethanol, benzene as in order of average concentration for the Industrial Sites. The main odorous compounds were COS, H2S, CS2, MM(methyl mercaptan), form aldehyde, acetaldehyde for the 1,2 Industrial Sites and COS, H2S, form aldehyde, acetaldehyde were measured as main species for the 3 Industrial Site. NH3 was measured as below the detection limit of the instrument. The concentrations of sulfide compounds for the 1,2 Industrial Sites were relatively higher than ones for the 3 Industrial Site. Among aldehydes, form aldehyde, acetaldehyde were detected very highly as 0.1- 1ppm over all the Industrial Sites.

소비자의 기성복 라벨 이용도와 신뢰도

성해련,송현주,김태규,문영주 효성여자대학교 가정대학 학도호국단 1987 家政大論集 Vol.6 No.-

The purpose of this research is in comparing the goods which have been producing in severalcompany and judging them, and examing how much intrested are the consumers in the labels whichgive us informations. In order to certify them we've investigated the degree of confirmation, confidence, utilization andrecognition of the consumers about the labels. The questionnair method was used to obtained the data which was mad by a result of self-adminis-ted questionnair. A size of random sample for this research was 125 subjects. The results are as follows ; 1) Most of the consumers confirm the labels. 2) The degree of the consumers' recognition about the necessity of the labels is nearly correspondwith the utilization of it. 3) The consumers' confidence about the label of ready-made clothes in the open market is relatively low. That's because they(the labels in the open market) are usually incorrect yet and couldn't giveus enough informations.

두 개의 타이머를 사용한 PCS 사용자의 위치관리기법

박종진,문영성 崇實大學校 生産技術硏究所 2002 論文集 Vol.32 No.-

IS-41 specifies the location management scheme for the PCS (Personal Communication System). However, it has an importanr shortcoming such that it becomes inefficient as the number of users increases. Thus it is necessary to augment the IS-41 scheme to achieve more efficient location management. The operations of location management are "location update" and "terminal paging". If MN (Mobile Node) enters a new RA(Registration Area), then corresponding VLR (Visitor Location Register) requests to update MN's location information to the HLR (Home Location Register). And if a call to the MN is arrived at VLR, then VLR requests to Know MN' location information to the HLR for connection. There are many approaches to increase efficiency for location update and terminal paging. In this paper, we proposed location management scheme with two timers for location update to reduce HLR's processing load. The results from the Performance evaluation confirms the efficiencies of the proposed scheme.