휴대용 핵종 분석기의 유용성 평가

김지현(Ji Hyeon Kim),전성진(Seong Jin Jin),제재용(Jae Yong Je) 한국방사선학회 2015 한국방사선학회 학술대회 논문집 Vol.2015 No.춘계

본 연구는 휴대용 핵종분석기를 이용하여 부산지역의 지역별 환경방사선을 측정하여 휴개용 핵종분석기의 유용성을 평가하고자 한다. 측정 대상은 부산의 중심에 위치한 부산진구 소재 송상현 광장을 중심으로 9곳의 환경 방사선을 측정하였다. 측정결과 부산역과 부산대학교를 제외한 대부분의 지역에서 환경방사선은 비슷한 결과를 나탄내었다. 검출된 핵종은241Am, 133Ba, 54Mn등이 검출되었고 핵종분석기에 내장된 핵종정보가 부족하여 알 수 없는 핵종들도 검출되었다. 실험에 사용한 휴대용 핵종분석기는 분해능이 8% 정도로 자연방사성 핵종과 인공방사성 핵종을 핵종별로 정확하게 분석하기 위해서는 제조사의 개선이 필요한 것으로 판단된다. This research aims at measuring the environmental radioactivity at each area of Busan using a potable radio-isotope identification system, and assessing the utility of the potable radio-iosotope identification system. As for the target for measurement, the environmental radioactivities of nine areas centered around Songsanghyeon Square in Jin-gu located in the center of Busan were measured. As the measurement result, the environmental radioactivities were similar in most of the areas except in Busan station and Busan University. The nuclides, such as 241Am, 133Ba, 54Mn and so on, were detected, and some nuclides whose identity was unknown because of lack of information built in the radiation spectrum analyzer were also found. The potable radio-isotope identification system used in the experiment had about 8% of resolving power, so for more precise analysis into the nuclides of natural background radiation and artificial radiation in each type, the manufacturer needs to improve the analyzer.

다물체 동역학 모델을 이용한 밸런싱 방법에 관한 연구

지창진,유태규,홍성욱 한국공작기계학회 2008 한국공작기계학회 춘계학술대회논문집 Vol.2008 No.-

Aysmmetric rotors are often employed in a variety of machines. A large amount of asymmetry in rotors makes the conventional balancing schemes very difficult in implementation. In this paper, a balancing scheme which systematically adjusts principal inertial axes by adding balancing weights is applied. A multi-body dynamic model using commercial codes, ADAMS and SIMULINK, is developed to prove the effect of balancing in a heavily unbalanced rotor.

소매점의 고객애호도 유형에 따른 서비스 포지셔닝 전략

지성구,윤영진,이감용 한국유통정보학회 2000 유통정보학회지 Vol.3 No.1

In this research, we investigate an effective service positioning strategy in a department store. In order to identify the effective positioning strategy of department store, we find out and develop the service quality raters of department store. And also we clarify the customer's loyalty types, using the Four types of customer's loyalty are change quality raters and merchandise value. Especially, relationships between customer and provider, that is empathy or closeness, is the most important factor to identify the customer's hypothetical types.

경식도 심초음파도의 Direct Planimetry를 이용하여 측정한 대동맥판 면적의 심박출량 및 좌심실 구출율의 변화에 따른 정확도

진승원,김종진,김희열,박지원,전두수,윤호중,박준철,노태호,채장성,김재형,홍순조,최규보 대한순환기학회 2000 Korean Circulation Journal Vol.30 No.8

설계시공일괄입찰 사전자격심사의 안전관리수준 적용방안

지성민,서용칠,구교진,현창택 대한건축학회 2003 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.23 No.2

In terms of the Safety, a risk of accident in construction industry is the most dangerous thing in any other industries. So, there have been many studies to improve the safety performance of construction projects. But, the most of them were dealt with controls in the job site and the contractor. For these reasons, the purpose of this study(Construction Safety Management) is two-part. : One is showing the basic items composed of prequalification in Construction Safety Management, and the other is improving the selection method to meet the owner's needs including a Contractor's Safety Management Performance.

증권시장에서 판매원 윤리의식의 결정요인

지성구,이감용,윤영진 한국유통정보학회 2001 유통정보학회지 Vol.4 No.1

This research addresses the determinants of salespeople's ethical awareness(SEA) in stock market. The suggested model include several factors such as environmental uncertainty(volatility and diversity), customer orientation, ethical climate and perception of the ethical awareness of supervisor. Some hypotheses that show the relationship between SEA and the factors are suggested. To attain these objective of this research, samples from salespeople were collected. For the analysis of data, reliability test, validity test, correlation analysis, multiple regression analysis and frequency analysis were used with SPSS WIN package. the results show that environmental volatility, customer orientation(3 factor, 1 factor), organization's ethical climate, affect SEA, however, environmental diversity and customer orientation(2 factor, 4 factor) don't work. And, as hypothesized, SEA generally had positive impacts on customer relationship quality(customer's trust and satisfaction).

몬도씨병 (Mondor's Disease) 1예

김지은,김유진,서성준,홍창권 중앙대학교 의과대학 의과학연구소 2003 中央醫大誌 Vol.28 No.3

M-Commerce에서 Secure Card 기반의 결제 프로토콜 설계

김성열,조성지,유성진,배용근 조선대학교 전자정보통신연구소 2002 電子情報通信硏究所論文誌 Vol.5 No.2

In order to provide a reliable M-Commerce, a payment solution with security functions should be required. User's mobile terminals used in M-Commerce services are diversifying to cellular phone, PDA, Smart phone etc. Among them, integration of PDA's interface and mobile connection overcomes the weak point of existing cellular phone depending on information via the internet. In this paper, the Secure Card based protocol for a credit card transaction on PDA using ECC is presented. Secure Card module on this protocol encrypts user's information such as private information, delivery information and credit card information and stores it on PDA in order to free from inputting information whenever it is used. This scheme also offers security services on M-Commerce including authentication, confidentiality, integration, non-repudiation and so on.

상악 구개측 중앙부에 매복된 과잉치

민성진,최형준,,김성오,이제호,곽지윤,최병재 大韓小兒齒科學會 2005 大韓小兒齒科學會誌 Vol.32 No.4

과잉치는 치배 형성기에 정상 치판의 과도한 증식의 결과로 발생하며 산발적일 수도 있고 유전적일 수도 있다. 발생 빈도는 1~3%이며,2:1의 비율로 남아에게 호발한다. 주로 상악 전방부에서 많이 발견되며, 매복, 영구치의 위치 이상, 정중부 이개, 낭종, 비강으로의 맹출 등과 같은 다양한 합병증을 나타낼 수도 있다. 상악 전방부에서 발견되어지는 과잉치는 치축방향에 따라 위치가 결정되며 상악 전방부 과잉치의 1/3 정도는 역위 매복되어 맹출의 가능성이 없지만, 치낭의 치관 부위가 정상적인 관계로 존재하는 한 과잉치의 이동이 일어날 수 있다. 치아의 이동은 경구개, 소구치 부위, 비강까지도 일어날 수 있다. 또한 전상악 수직고경의 성장으로 시간이 지남에 라 외과적 접근이 어려워질 수 있다. 이에 본 두 증례에서는 역위 매복된 상악 전방부의 과잉치가 구개 측 중앙부까지 이동된 것을 발견하여 외과적으로 제거하였다. Supernumerary tooth develops as a result of abnormal proliferation of the dental lamina during the initiation stage of dental development. It could be a sporadic occurrence or a hereditary transmission. Supernumerary tooth occurs with a frequency of 1 to 3%, Generally, there is a 2:1 preference for boys. It is usually found in the anterior portion of the maxilla and may be associated with complications such as impaction, malposition of permanent teeth, formation of diastema, cysts and eruption into nasal cavity. The position of supernumerary tooth found in the anterior portion of the maxilla is determined by the axis of the tooth. One third of supernumerary tooth in the anterior portion of the maxilla has no possibility of eruption due to its invertedly impacted position. However, as long as the coronal part of the follicle remain intact, migration of supernumerary tooth is possible. The migration may occur into the palate, the premolar region, the sinus or the nasal cavity. Also, growth of vertical dimension of maxilla could make surgical approach difficult as time goes by. For this reason, we have found invertedly impacted mesiodens moved to the vault of the palate in the two cases, and extracted supernumerary tooth surgically.

수종 한약제의 위암세포에 대한 항암작용 효능 검색 및 약리작용에 관한 분자생물학적 연구

김진성,이지향,류봉하,박재훈,지성길,유진화 대한한방종양학회 1999 대한한방종양학회지 Vol.5 No.1

Traditional oriental medicines have ken used for tmament of various kinds of human cancers for long times and some of mem proven to k effective clinical-. However, the pItarmacologica1 actions ad mechanisms related to cancer treatment are generally unknown. In an effort to clarify the action mechanisms of several oriental medicines used for cancer treatments. we planned this experimental praedura. We selected Cadyceps sinensis (동충하초), Punellae Herba (夏柱草), Rehmanniae Radix (熟地黃), Paeoniae Radix (白均案), Oldedamar Herba (白花批告草), Partulaceae Herba (馬首算), Scdopendrasubspinipes mudans (蜈松), Mylabris Phalerara (班藝), Phellinus igniarius(蔡黃), Ganodermae Lignum(靈芝) for evaluation, which have ken used for patients of gastric cancers. The twenty grams of medicines were boiled in 100㎖ of water for 1 hour and filtered with O.2㎛ pore-sized filter unit to remove insoluble particles. Initially we evaluated the effects oriental medicines on growth inhibition in stomach cancer cells. The gastric cancer cell line, AGS, was cultured in RPMI l640 supplemented with lO% heat-inactivated fetal bovine serum and Heated with lO㎕ oriental medicines per l㎖ of medium up to 48 hours. The specimens were subjected to MTT assay for evaluation of growth inhibition. We found mat Mylabris piulema (班 察) markedly supmessed the growth of cancer cells as shown in results. Next, we checked the effects of orielntl medicines on cancer on cell cycles and apMonsis. Mylabrls phalerata (반모) inhibited cell cycle progression of Canea cells a compared with connol cells and cells treated with other medicines. In addition, Mylabri phalerata (반모) induced apptosis in 30-40% of stomch cancer cells within 24 hours. Other oriental medicines used for this experiments did not show apoptosis-inducing effects on cancer cells. Finally, we determined the expmSSion levels of genes associated with cell cycle Md apoptosis. The expressions of bcl-2 and bcl-XL were downregulated by the treamerm of Mylabris phalerata (반모). However, the expression levels of genes related to cell cycles were not altered significantly. In conclusion, we found that Mylams phalerata (반모) has in vivo gowth-inhibiting ad apptosis- inducing effects on stomach cancer cells. However, we think that at least animal experiments are necessay for evduations.