Tool을 이용한 요구 명세서 작성

신재선,이성주 조선대학교 기초과학연구소 1988 自然科學硏究 Vol.11 No.1

Jae Seon Shin Sung Joo Lee This thesis describes an approach to requirements specification in which different aspects of requirements specification are expressed using multiple models. This thesis also describes an interactive software tool named Model-Box, Which supports the construction and analysis of requirements models via textual and graphical representations. Model-Box allows users to define appropriate new models for the aspects they want to describe, without restriction to a single modeling methodology.

Photonic Crystals: Integration of Colloidal Photonic Crystals toward Miniaturized Spectrometers (Adv. Mater. 9/2010)

Kim, Shin-Hyun,Park, Hyo Sung,Choi, Jae Hoon,Shim, Jae Won,Yang, Seung-Man WILEY-VCH Verlag 2010 Advanced materials Vol.22 No.9

<B>Graphic Abstract</B> <P>The cover shows a schematic illustration of patterned colloidal photonic crystals with different bandgap positions. When an unknown light source impinges on the patterned photonic crystals, the light information can be identified from the reflection intensity profile of the constituent photonic crystals. The two optical microscopy images and background image display integrated photonic crystals with 20 different bandgaps spanning the entire visible range, and the SEM image shows the cross-section of the photonic crystal stripes, as reported by Shin-Hyun Kim, Seung-Man Yang, and co-workers on p. 946. <img src='wiley_img_2010/09359648-2010-22-9-ADMA201090022-content.gif' alt='wiley_img_2010/09359648-2010-22-9-ADMA201090022-content'> </P>

Removable type distal shoe space maintainer에 의한 제1대

신재성,남순현,김현정 大韓小兒齒科學會 1993 大韓小兒齒科學會誌 Vol.20 No.2

저자는 경북대 병원 소아치과에 치아우식증을 주소로 내원한 6세된 남아의 상악 좌측 제2유구치가 치아우식증이 심하여 조기발견 후 removable type distal shoe space maintainer로 치료하여 상악 좌측 제1영구치를 정상위치로 맹출시킨 좋은 결과를 보았으며 향후 기능형 가철성 간격유지 장치를 사용하여 후속 영구치가 맹출 될때까지 임상적, 방사선적 검사에 의해 계속적인 관찰이 필요할것으로 사료된다.

Al 7075합금의 열간성형 및 반응고성형 공정에 따른 미세조직과 경도 특성

신평우,이상용,전재일 國立 昌原大學校 産業技術硏究所 1998 産技硏論文集 Vol.12 No.-

Various precision forging processes were applied for Al 7075 alloy. Among the each forging parts produced by existing multi-stage forging, improved single-stage forging and thixoforging(new technology of a near-net shape manufacture), thixoforging was excellent at viewpoints of homogeneity and formability. Hardness values of each forging parts produced by single-stage forging and thixoforging process came close to existing multi-stage forging parts. Irregular grain boundary and particle for thixoforging process were homogenized by artificial aging treatment(T6) and the hardness value was increased considerably.

구리의 전기석출시 젤라틴이 물성에 미치는 영향

신석재,강현춘,안형환,강안수,김용렬,한성만,이한섭 明知大學校 産業技術硏究所 1995 産業技術硏究所論文集 Vol.14 No.-

In the electrodeposition of copper foil for preparing printed circuit boards, a little amount of gelatin as a addition agent has been used for the better characteristics of a coat of electroplating. Gelatin modifies the physical properties such as mechanical strength, matte-side roughness, ultimate tensile strength(U.T.S), and elongation of copper foil, furthermore gelatin have influence on the structure of electrodeposits and the cathode polarization. The electrolyte used was of a composition; CuSO₄·5H₂O 300g/ℓ, H₂SO₄ 100g/ℓ, NaCl 10 ppm as a brightner, and was gelatin 0-7 ppm as a addition agent. Current density was 50 A/dm², and the temperature of electrolytic bath was 50 to 52 ℃. Experiments showed that the optimum gelatin concentration was 5 ppm with the consideration of the numbers of electrodeposited nuclei. And the nuclei numbers was sharply increased under 5 ppm, but was almostly constant above 5ppm. Average matte-side roughness by Surfcorder was gradually increased with the increasing gelatine concentration up to 2 ppm, and maximum roughness was observed at 2ppm. The roughness showed gradual decrease within the concentration range of 2 to 4 ppm, and was almost constant above 4ppm . Within the gelatine concentration range of 0 to 7 ppm, as the concentration increased, UTS was increased and elongation was decreased logarithmically. Also, in comparison between UTS and elongation, gelatin was identified as an addition agent acting inversely.

비정질 Fe_(80)B_(20) 합금의 결정화

신영남,서동성,김재경,양재석 대구대학교 기초과학연구소 1995 基礎科學硏究 Vol.12 No.-

연자성 재료의 하나인 비정질 Fe_(80)B_(20) 합금을 단롤법으로 제작하여 주차열분석(Differential scanning calorimeter)실험을 통해 결정화 온도를 알아보고, 비정질 시료와 결정화된 시료를 X-선회절실험 및 Mo¨ssbauer 분광실험으로 생성된 결성상의 변화를 규명 분석하였다. DSC 실험을 통해서 얻은 결정화 시작온도 426℃, Peak온도 458℃, 종료온도 476℃임을 알았으며, 700℃에서 각각 1시간 동안 열처리를 하였다. 시료를 XRD로 분석한 결과 열처리 전에는 halo상의 비정질 상태임을 확인하였고, 열처리 후의 시료는 격자상수가 5.8Å인 α-Fe상과 격자상수가 a=8.63Å. c=4.29Å인 t-Fe_(3)B상이 나타남을 확인하였다. 결정화된 시료들의 Mo¨ssbauer spectrum은 4조의 6중선으로 연산하여 초미세자기장값과 상대면적값에 의해 각 시료의 Fe/B값으로부터 426℃, 458℃, 476℃에선 FeB상으로, 700℃에선 Fe_(2)B상과 Fe_(3)B상이 혼합되어 있다고 볼 수 있다. 한편 결정화된 시료들의 Mo¨ssbauer spectrum은 subspectra L1, L2, L3, L4, L5 및 L6의 6개의 6중선으로 fitting된 초미세자기장 α-Fe값은 333~339kOe, t-Fe_(3)B값은 220~295kOe, o-Fe_(3)B값은 230~283kOe 그리고 시료중 700℃에서 결정화된 L6의 초미세자기장값이 236kOe으로서 o-Fe_(3)B상과 t-Fe_(3)B상이 혼합되어져 있다고 볼 수 있다. 또한 열처리 온도가 증가 할수록 각 시료는 α-Fe상의 존재비가 증가하였고 t-Fe_(3)B상과 o-Fe_(3)B상이 공존하였으며, 700℃에서는 t-Fe_(2)B상이 존재함을 알았다. The crystallization of Fe_(30)&B_(23) amorphous alloy, prepared by rapid quenching from melt, was studied by differential s c a e calorimetry, X-ray djffraction and Mossbauer spectroscopy. Annealing condition was determined with the aid of DSC curves. From this measurements, this aUoy was annealed 1 hour at 426℃, 458℃ 476℃ and 700℃ in 5 × 10^(-6) torr. The lattice constants for the isochronally annealed Fe_(30)-B_(20) alloy were a-Fe(5.8A) and t-F~B(a=8.63A, c= 4.29A). The Mo¨ssbauer spectra of the Fe_(30)-B_(20) alloy consist of 6-sixlets absorption peaks. Hyperfine fields are obtained 333 - 339kOe, 2% - 295kOe, 252 - 262kOe, 220 - 225kOe, 272 - 283kOe and 230 - 236kOe. These phases are assumed to be crystalline α-Fe, t-Fe₃B, O-Fe₃B and t-Fe₂B.

播種期 및 育苗日數가 黃色種 담배의 初期生育 및 收量에 미치는 影響

申周植,盧載榮,裵吉寬,朴相一 충북대학교 엽연초연구소 1984 煙草硏究 Vol.11 No.-

This experiment was carried out to study the influence of different sowing time, seedling age (the degree of delayed setting) and seedlingbed materials on the growth and yield components of flue-cured tobacco. The variety applied was N.C. 2326, was sown on March 1,11,21 and 31. Those plants were transplanted on the seeding bed mixed humus with sand at the ratio of humus 9 : sand 1 and humus 3: sand 7, 25 days after sowing. Seedlings were grown for 40, 50, 60 and 70 days (from sowing to setting) on the seed bed and seedling bed, and set on the pots (1/5,000a) in the vinyl house. The results obtained were as forlows . 1.The amount of growth of seedlings increased by late sowing and delayed setting. 2.Until the time before the maximum growth stage after setting, stem heigth was larger in the plots of late sowing and delayed setting. After the middle part of maximum growth stage, the earner the sewing time was, the more remarkable the influence of seedling age on the stem elongation was and the larder the seedling age was, the more remarkable the influence of sowing time on the stem elongation was. 3.Stem diameter was large in the plot to late sowing until the early part of maximum growth stage but after the middle part of maximum growth stage the diameter was large in the plants sown at March 11 and March 21. 4.The number of leaves per plant increased by late sowing and delayed setting shown significant difference after maximum growth stage. 5.Late setting made the stem height high and number of leaves per plant more. The size of largest leaf was small in the plot of early sowing and large in the plot set after May 10. 6.It takes more days to reach a topping time from sowing and setting in the case of early sowing and early setting. 7.In early sowing plots, the leaf area of lugs and cutlers decreased by younger seedling age, and in late sowing plots, that decreased by older seedling age. The leaf area of leaf and tip at different treatments showed similar results, but in the plots sown at March 11 and 21, largest leaf was shown in the plot of 50- day seedlings. The area of green tip decreased by late seeding and delayed setting. As a result of theses the plant type showed sylindrical in the plot of early sowing and younger seedling age, and cone shape in the plot of late sewing and older seedling age. 8.The earlier the sowing time and the younger the seedling age were, the heavier the weight of unit leaf area of lugs and cutters, but there were little influences of different sowing time and seedling age on the weight of unit leaf area of leaf, tip and green tip. The percentage of dry matter showed similar tendency to the results of weight of unit leaf area. 9.Late sowing (March, 31) decreases the weight of a cured leaf. Weight of cured cutter was largest in the plots sowing March 1 and that of leaf tip and green tip was largest in the plots sowing March 11 and March 21. The weight of cured lugs was largest in 40 and 50-day seedlings, and that of tip and green tip was largest in 50-day seedlings. There were little differences of weight of a cutter and leaf among the treatments of different seedling age. 10.In 40- day seedlings, the area and weight of leaves per plant increased by late sowing, and in 70-day seedlings, those increased by early sowing. In 50 and 60-day seedlings, those were highest in the plots sown at March 11 and March 21. Largest weight and area of leaves per plant was shown in the plot set on May 10, and the plots set on April 10, and June 1 showed significantly low weight of loaves per plant. 11.Late sowing and older seedling age increased the leaf thickness of those leaves. Different sowing time and the seedling age did not influence on the leaf area contraction ratio and leaf thickness of leaf, tip and green tip. 12.There were significantly negative correlation between leaf area of lug and cutter and weight per unit leaf area, percentage of dry matter and leaf thickness of the lug and cutters, but no correlation between those characters of leaf, tip and green tip. Weight per unit leaf area correlated positively with percentage of dry matter and specific leaf weight in all stalk position. In the lug and cutter, weight per unit leaf area correlated positively with leaf thickness and negatively with leaf area contraction between weight per unit leaf area and leaf area contraction ratio. There were negative correlation between leaf thickness and leaf area contractions of lugs and cutters, and no correlation between those characters of leaf, tip and green tip. 13.There were not significant effects of seedling bed materials applied in this experiment on the growth after setting and yield components.

L-라이신 발효에 있어서 당밀전처리의 영향

신현철,김성준,성진석,전영중,이재흥 한국미생물생명공학회 ( 구 한국산업미생물학회 ) 1996 한국미생물·생명공학회지 Vol.24 No.3

Can molasses, the most widely used carbon source for the industrial fermentation of L-lysine, usually contains a high concentration of calcium ions which tend to cause scaling problem in the recovery process. To remove the calcium ions, cane molasses was pretreated with sulfuric acid by adjusting the pH to 2.5~3.5. When the pretreated solution was directly heat-sterilized and used in the fermentation, a significant reduction in L-lysine production was observed. In this paper, we proved that sucrose is a superior substrate for L-lysine fermentation of that of glucose or fructose and that the above-mentioned decrease of L-lysine production was caused by the hydrolysis of sucrose in the molasses when the molasses was heat-sterilized at a low pH. The problem was overcome by adjusting the pH of molasses to neutral before sterilization.

정신분열병과 기분장애의 Cavum Septi Pellucidi에 관한 자기공명영상 연구

신상은,강민희,김철응,이정섭,배재남 대한신경정신의학회 2000 신경정신의학 Vol.39 No.4

연구목적: 뇌자기공명촬영술을 이용하여 정신분열병 환자와 기분장애 환자, 대조군의 Cavum Septi Pellucidi를 측정하여 정신분열병과 기분장애에서 생물학적인 원인 중 하나인 신경 발달학적 가설을 알아보는데 있다. 방법: 34명의 정신분열병 환자와 18명의 기분장애 환자, 22명의 대조군에게 자기공명촬영술을 시행하여 CSP의 출현 빈도 및 CSP의 크기에 따른 출현빈도를 비교분석하여 다음과 같은 결과를 얻었다. 결과: CSP의 출현 빈도는 정신분열병 환자에서 61%, 기분 장애환자에서 61%, 대조군에서 41%로 나타났다. T1 강조 축상 영상에서 가장 크게 보이는 단면에서 가로로 가장 긴 부분의 길이가 3mm 이상으로 정의한 큰 CSP의 출현빈도는 정신분혈병환자에서 24%, 기분 장애 환자에서 11%, 대조군에서 5%였고 정신분열병, 기분장애, 대조군의 순으로 높은 빈도를 보였으나 통계적인 유의성은 없었다. 결론: 정신분열병, 기분장애, 대조군의 순으로 큰 CSP의 빈도가 높은 경향성은 확인할수 있었으나 통계적으로 유의한 차이는 아니었다. 그러나 본 연구는 여러 가지 제한점이 있었기 때문에 신경발달학적 가설을 알아보기 위해서는 향후 환자수를 확대하고 보다 정교하게 고안된 연구가 필요하다. Objectives: This study was designed to verify neuro-developmental hypothesis of schizo-phrenia and mood disorder. Methods: We performed Brain Magnetic Resonance Imaging study in 34 schizophrenic patients, 18 mood disorder patients and 22 controls and compared the incidence and the size of carum septi pellucidi(CSP). Results: The incidences of CSP in schizophrenia, mood disorder and controls were 61%,61%, and 41%, respectively. The incidences of large CSP, defined as largest diameter larger than 3mm in T1-weighted image, were 24% in schizophrenic patients, 11% in mood disorder patients, and 5% in controls. But they didn't show statistically significant differences. Conclusion:We could find the tendency that the incidence of CSP was high as following order ; schizophrenia, mood disorder, controls. But it was not statistically significant difference. To verify neuro-developmental hypothesis, we need larger pool of patients and better study design.

광섬유 집합체 센서를 이용한 6MV 광자선의 반음영 및 심부선량백분율 측정

신상훈,장경원,조동현,유욱재,서정기,이봉수,문주현,박병기 제주대학교 방사선응용과학연구소 2008 방사선응용과학연구소논문집 Vol.22 No.-

In this study, a fiber-optic bundle sensor has been developed using water-equivalent organic scintillating fibers for photon beam measurement. Beam penumbra and percent depth doses(PDD) are measured according to the depth of the photon beam. This sensor has many advantages such as high resolution, real-time measurement and ease of calibration over conventional radiation measurement devices.