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박용준,박남규,류광선,장순호,박신종,윤선미,김동국,Park, Yong Jun,Park, Nam Gyu,Ryu, Gwang Seon,Jang, Sun Ho,Park, Sin Jong,Yun, Seon Mi,Kim, Dong Guk Korean Chemical Society 2001 Bulletin of the Korean Chemical Society Vol.22 No.9
Vanadium oxide thin films with thickness of about 2000 $\AA$ have been prepared by radio frequency sputter deposition using a V2O5 target in a mixed argon and oxygen atmosphere with different Ar/O2 ratio ranging from 99/1 to 90/10. X-ray diffraction and X-ray absorption near edge structure spectroscopic studies show that the oxygen content higher than 5% crystallizes a stoichiometric V2O5 phase, while oxygen deficient phase is formed in the lower oxygen content. The oxygen content in the mixed Ar + O2 has a significant influence on electrochemical lithium insertion/deinsertion property. The discharge-charge capacity of vanadium oxide film increases with increasing the reactive oxygen content. The V2O5 film deposited at the Ar/O2 ratio of 90/10 exhibits high discharge capacity of 100 ${\mu}Ah/cm2-{\mu}m$ along with good cycle performance.
TiN 기판 위에 성장시킨 비정질 BaSm<sub>2</sub>Ti<sub>4</sub>O<sub>12</sub> 박막의 구조 및 전기적 특성 연구
박용준,백종후,이영진,정영훈,남산,Park, Yong-Jun,Paik, Jong-Hoo,Lee, Young-Jin,Jeong, Young-Hun,Nahm, Sahn 한국재료학회 2008 한국재료학회지 Vol.18 No.4
The structural and electrical properties of amorphous $BaSm_2Ti_4O_{12}$ (BSmT) films on a $TiN/SiO_2/Si$ substrate deposited using a RF magnetron sputtering method were investigated. The deposition of BSmT films was carried out at $300^{\circ}C$ in a mixed oxygen and argon ($O_2$ : Ar = 1 : 4) atmosphere with a total pressure of 8.0 mTorr. In particular, a 45 nm-thick amorphous BSmT film exhibited a high capacitance density and low dissipation factor of $7.60\;fF/{\mu}m2$ and 1.3%, respectively, with a dielectric constant of 38 at 100 kHz. Its capacitance showed very little change, even in GHz ranges from 1.0 GHz to 6.0 GHz. The quality factor of the BSmT film was as high as 67 at 6 GHz. The leakage current density of the BSmT film was also very low, at approximately $5.11\;nA/cm^2$ at 2 V; its conduction mechanism was explained by the the Poole-Frenkel emission. The quadratic voltage coefficient of capacitance of the BSmT film was approximately $698\;ppm/V^2$, which is higher than the required value (<$100\;ppm/V^2$) for RF application. This could be reduced by improving the process condition. The temperature coefficient of capacitance of the film was low at nearly $296\;ppm/^{\circ}C$ at 100 kHz. Therefore, amorphous BSmT grown on a TiN substrate is a viable candidate material for a metal-insulator-metal capacitor.
스마트 팩토리 적용을 통한 금형 생산 시스템 향상에 관한 연구
박용준,유경선,현동훈 국제차세대융합기술학회 2020 차세대융합기술학회논문지 Vol.4 No.3
본 논문에서는 금형 생산 공정에 중간수준 1 스마트 팩토리 시스템을 적용하여 가공 설비 가동률 및 효율 극대화가 일어나는 과정을 연구하였다. 금형 생산 공정에서 기존 ICT 인프라를 스마트화하여 스마트 팩토리 시스템 을 적용하고 금형 개발 전공정(견적, 수주, 설계, 가공, 사상/조립, 시사출) 정보를 실시간 통합함에 따른 기업 내 공정 관리 강화, 설비운용 효율 증대, 불량률 감소 실현을 통해 생산성 향상 및 원가절감을 실현 가능성에 대해 연구하였 다. 먼저 스마트 팩토리 시스템 중 생산설비정보시스템인 MES, POP, PDM을 금형 생산라인에 적용하였으며, 그를 통해 업무생산성, 설비종합효율, 설비가동률, 공정불량률, 원가절감률의 효율 증대를 데이터화하여 정리하였고, 실시 간 모니터링 시스템 구축을 통해 금형산업의 가장 큰 경쟁력 중 하나인 납기대응력의 개선을 확인하였다. In this paper, we applied the middle level 1 smart factory system to the mold production process to study the process that maximizes the operating rate and efficiency of processing equipment. By making the existing ICT infrastructure smart in the mold production process and applying the smart factory system to integrate all the mold development process(citation, ordering, design, processing, idea and assembly, current events) information in real time. By integrating information, we have investigated the possibility of strengthening process management within the company, improving equipment operation efficiency, and reducing defect rates, thereby improving productivity and reducing costs. First of all, MES, POP, and PDM, which are production facility information systems for smart factory systems, have been applied to mold production lines. Through this, the efficiency of work productivity, facility overall efficiency, facility operation rate, process defect rate, and cost reduction rate were summarized by data. And through the establishment of a real-time monitoring system, it was confirmed that the time-of-delivery response power improvement, one of the biggest competitiveness of the mold industry, was improved.
박용준 신영어영문학회 2014 신영어영문학 Vol.58 No.-
Some grammarians, Jespersen and Palmer, insist that English does not have a future tense and also English has 2-tense system because WILL is not a future tense as past tense and present tense are. They do not want to categorize WILL as tense but as a modal verb which is used to express modalities in English. But Wekker and Declerck do not agree with this but they want to show the evidences which reveal WILL is a future tense in English. Actually, WILL is used as a future tense by English speakers as they recognize WILL functions as a future tense. It means that actual usage of WILL also has a future tense even if it is categorized as a modal verb. In this paper, I would like to tell that WILL has the meaning of future tense which is different from the modality that WILL expresses and that WILL functions as a future tense as past tense and present tense. So, WILL is an important modal verb but it is also a future tense because there are some usages that show us that the WILL is used to express future event as a future tense. And as we see, some usages will prove that WILL plays a role as a future tense in English.
박용준,김동중 서울대학교 교육종합연구원 2015 The SNU Journal of Education Research Vol.24 No.-
Many researchers have investigated how hearing kindergarteners explore technology-based tools (e.g., mathematics computer games) and interact with each other while playing computer games. However, we still know very little about how deaf kindergarteners interact and sign with each other while using technology-based tools. We conducted a case study of paired deaf signers learning number concepts playing mathematics computer games. We observed three different pairs for five months and videotaped sessions between two signers working on on-line mathematics computer games. The paired students’ American Sign Language competency was found to be critical for deaf kindergartners’ interaction to solve mathematical questions such as number concepts. Our findings also indicate that mathematics computer games can be a tool which can motivate deaf signers to communicate with each other and that in technology-based learning environments pairing would be a strategy to encourage deaf signers to interact with each other.
박용준,김태효,정원용 경남대학교 공업기술연구소 2000 硏究論文集 Vol.18 No.-
본 논문에서는 정지 영상의 전송과정에서 발생되는 손상된 영상을 효과적으로 복원하기 위하여 블록단위의 Edge Fitting Arithmetic(EFA) 알고리즘을 제안하였다. 본 알고리즘은 미리 계산된 이산적인 마스크를 전송된 영상의 3×3 블록에 적용시켜 방향성분을 계산하고, 이를 이용하여 에지에 대한 회전각, 거리 등의 정보를 계산한다. 영상의 복원 과정에서 각 3×3블록들은 5×5 블록으로 확장하고, 다시 원상태의 3×3 블록으로 축소시켜 복원한다. 실험결과, 본 알고리즘은 Lenna, Baboon 및 Camera Man의 시험 영상에 적용하여 복원한 영상의 PSNR이 양선형 보간법(bilinear interpolation method)을 적용한 결과에 비해 평균 0.6∼5dB 정도 향상된 화질을 얻을 수 있었다 In this paper, the EFA(edge fitting arithmetic) algorithm within per block unit is proposed to reconstruct from the damaged image occurred through still Image transmission. In this algorithm, the direction of edge components by the given 3×3 block which is previously calculated as discrete masks are detected from the transmitted image, then, from the edge components the rotated angle and the distance data are calculated sequentialy. In the procedure of image reconstruction, the 3×3 blocks are converted to 5×5 blocks for determination of the detailed edge and then the 5×5 b1ocks are reduced to the 3×3 blocks. The experimental results showed that the PSNR can be obtained 23.24dB, 19.06dB and 20.08dB from the test images of Lenna, Baboon and Camera Man respectively. This results improved the image quality of 0.6dB~5dB with respect to the bilinear interpolation method .
測定器具의 相異에 의한 測定値의 差異-Ⅰ : 綱絲의 경우
朴龍俊 釜山水産大學校 1963 釜山水産大學 硏究報告 Vol.5 No.1
以上의 測定 및 計算結果로서 下記와 같은 事項을 알 수 있을 것이다. 1. 網絲의 直徑測定에 使用되는 主된 器具인 顯微鏡, Dial gauge 및 Hand-pressure diameter gauge 로써 얻은 測定値의 平均値 x₁, x₂ 및 x₃ 重價平均 μ₁, ?? 및 ?? 平均誤差 μ₁,μ₂ 및 μ₃ 眞値에 가까운 값 x 全體 平均誤差 μ의 값 등은 表1에 揭示된 바와 같다. 2. 三種의 測定器具의 平均測定値 x₁, x₂ 및 x₃와 全體 平均誤差 μ 와의 關係는 表2에 表示한 바와 같이 세 개의 平均測定値와 x 와의 關係에 있어서는 x₁/x의 값이 가장 크고 反面 x₂/x의 값이 가장 작으며 平均誤差와 μ와의 關係에 있어서는 μ₁/μ의 각이 가장 크고 反對로 μ₂/μ의 값이 가장 작다. 卽즉 上記 兩 경우에 있어서 顯微鏡의 경우인 x₁/x 및 μ₁/μ가 가장 크고 Dial gauge의 경우인 x₂/x 및 μ₂/μ의 값이 가장 작다. 3. 網絲의 굵기의 不均一性은 cotton 와 mikulon 의 경우 가장 심하고 saran의 경우가 가장 작다. For the purpose of studying the relationship among measured values obtained by the use of such three kinds of instrument as microscope, dial gauge and hand-pressure diameter gauge, this measurement was carried out in the laborotory of temperature 22℃-26℃, and R. H. 70%-78%, in case of netting twine only. Table 1 shows various kinds of values x₁, x₂, x₃, ??, ??, ??, μ₁, μ₂, μ₃, x, μ and σ which are calculated from many measured values according to mean error and weighted mean formula. In Table 2, Seeing ratio between measured values x₁, x₂, and x₃ obtained by the use of three kinds of implement mentioned above and the nearest value to the exact value x, value of x₁/x and of x₂/x are the biggest and the smallest respectively. This means that difference between measured value resulted from measurement with micro scope and the nearest value to exact value x is the biggest and this relationship is converse in the dial gauge. Values of μ₁/μ, μ₂/μ and μ₃/μ also indicate same content in case described above. Standard deviation σ written in the last column of Table I, shows the degree of un-eveness of the netting twine in diameter.