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과학적 품질관리를 위한 품질성능지표관리 기법 - 실무적용 중심으로
신재혁,김종윤,남용석 한국품질경영학회 2018 한국품질경영학회 학술대회 Vol.2018 No.-
본 연구는 국방기술품질원의 자체연구과제의 연구결과물로 개발한 품질성능지표관리(QPIM) 기법의 실무적용에 관한 내용을 담고 있다. 무기체계의 개발단계 품질관리에 대한 관심이 고조되고 강조됨에 따라 QPIM은 과학적 개발관리도구의 하나로 방위사업관리규정 및 업무지침에서 요구하고 있는 추세에 걸맞춰 체계적, 정량적 품질관리를 위해 개발 되었다. QPIM는 사업성과관리(EVM)과 기술성능측정(TPM)과 같은 기존에 활용하고 있는 과학적 사업관리 기법에서 착안하여 품질요소가 반영된 형태의 과학적 품질관리 기법으로 품질성능지표에 따른 편차분석으로 위험관리를 하여 개발단계 전반에 걸쳐 보다 효과적으로 체계적인 품질관리를 할 수 있다. 무기체계가 고도화되고 품질성능지표가 다양해지면서 품질 측면에서 관리해야할 요소들이 방대하게 된다. 따라서, 무기체계 구성품별로 품질성능지표를 효과적으로 관리하기 위해 소프트웨어를 개발하였고, 이를 품질성능지표관리시스템(QPIMS)이라고 한다. 본 연구에서는 이러한 QPIM 및 QPIMS의 효용성 검증을 위해 시범사업에 적용하여 체계적으로 관리하는 단계를 소개하고, QPIM 기법을 활용하기 위해 추가적으로 보완하고 후속조치로써 고도화해야하는 방안에 대해 제시하고자 한다.
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제주평화연구원 : Jpi 정책포럼 ; 동남아시아 신생민주국가의 선거정치: 필리핀, 인도네시아, 태국 비교
신재혁 제주평화연구원 2014 Jpi정책포럼 Vol.151 No.-
본 논문의 목적은 동남아시아의 신생민주국가인 필리핀, 인도네시아, 태국의 선거정치에서 관찰되는 유사성과 상이성을 비교하는 것이다. 이들의 공통된 특징은 정책보다 선심성 혜택 제공 중심으로 선거 캠페인이 이루어지며, 선거에서 많은 정당들이 의석을 획득하여 국회의 파편성이 높다는 점이다. 한편 차이점도 주목할 만한데, 필리핀과 태국에 비하여 인도네시아는 선심성 혜택의 중요성이 낮다는 점과, 필리핀과 인도네시아 국회의 파편성이 높은 수준에서 지속되는 반면, 태국의 경우 탁신 등장 이후 국회의 파편성이 급감했다는 점이다. 본 논문은 이들 국가에서 선심 대신 정책 대결 중심의 선거 경쟁을 유도하기 위해서는 경제 발전을 통하여 선심을 원하는 가난한 유권자 수를 줄이는 것이 필요하고, 선거제도를 보다 정당 중심으로 개혁할 필요가 있다고 주장한다. 또한 국회의 파편성을 감소시키기 위해서는 소선거구제와 같이 소정당이 쉽게 의석을 획득할 수 없는 선거제도로 개혁이 필요하다고 주장한다.
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신재혁,김장생,김재중,이시형,Shin, Jae-Hyeok,Kim, Jang-Saeng,Kim, Jae-Jung,Lee, Si-Hyeong 대한한의정보학회 2011 大韓韓醫情報學會誌 Vol.17 No.2
"Beijijiufa" is a medical book republished by Sun Ju Qing in 1245. He compiled this book having added "Qizhumajiufa" and "Zhugejingyanbeijiyaofang" to the contents of "Beijijiufa" authored by Wen Ren Qi Nian. In "Beijijiufa" the author described treatment methods making use of moxibustion methods in connection with 22 cases of acute diseases. The author had collected the moxibustion methods used to treat acute diseases, which had been practiced by the medical practitioners of many generations, and quoted total 13 medical men's practices. In the book, the greatest parts of details were quoted especially from the writings of Sun Si Miao and Ge Hong, and this shows that the medical philosophies of both Sun Si Miao and Ge Hong were reflected onto "Beijijiufa". He had differed on his moxibustion practice: the size of moxa wool, the number of moxibustion treatment, and method of moxibustion for male and female were differed from one another according to the disease. As to the area of moxibustion, he chose the body parts around under four limbs and joints, and mostly used extraordinary acupoints rather than twelve main meridians. In his descriptions of finding meridian points, he did not describe it by its specific name of the reaction point, but explained the location of moxibustion points in detail through pictures. "Qizhumajiufa" is related to moxibustion method and prescriptions to treat surgical diseases, like skin boils or furuncle on the back, etc. He easily explained the method to find the meridian points for moxibustion treatment by using particular way through diagrams and pictures. Eight prescriptions he used were the collections among the historical practices of medical practitioners of many generations for skin boils which showed excellent therapeutic actions. In "Zhugejingyanbeijiyaofang", there are prescribed for 36 disease, also is the records of treatment methods for medical emergency which would be encountered easily in everyday life. As to therapeutic remedies, varied treatment methods, including the treatment by means of pasting and attaching medicinal substance to the spot, the treatment by means of mixing medicinal substance with alcoholic beverage, cleansing method, smoke inhalation remedy etc. were introduced. In "Beijijiufa" moxibustion was regarded as a top priority for treatment of acute disease, and the author strived to present remedies to the readers as easily as possible through 19 pictures. Regarding prescriptions, the author introduced diverse treatment methods with respect to various disease symptoms, and described the method to treat disease symptoms making use of medicinal ingredients which can easily be found in daily life. Likewise, "Beijijiufa" compiled by Sun Ju Qing was intended for clinical practice, and was indeed a medical book having been utilized for treatment of acute diseases in those days.
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Structural and Optical Properties of InN Nanowires Formed on Si(111)
신재혁,노시윤,이진성,오재원,류미이,김진수 한국진공학회 2022 Applied Science and Convergence Technology Vol.31 No.6
We report the structural and optical properties of InN nanowires (NWs) formed on p-type Si(111) substrates using a plasma-assisted molecularbeam epitaxy. The InN NWs were formed on a Si(111) substrate using a new growth method, the indium (In) pre-deposition (InPD) method, in which In droplets are initially formed by supplying only In flux to the substrate, where they work as nucleation sites for the formation of subsequent InN NWs. Field-emission scanning-electron microscopy images show that the InN NWs have symmetric shapes along the vertical direction. In addition, most of the InN NWs were unidirectionally grown in the direction perpendicular to the substrate. Strong and narrow peaks corresponding to InN(0002) can be clearly observed in the double crystal X-ray diffraction rocking curves of the NW samples. In the transmission electron microscopy images of the InN NWs, stacking faults, typically observed in Si-based III-nitride semiconductors, are rarely observed. A strong free-exciton peak was observed from the InN NWs at the wavelength of 1297 nm with a narrow linewidth at room temperature. Structural and optical characterizations of the NW samples indicate that highly crystalline InN NWs were formed on Si(111) using the new InPD growth method.
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Formation of an Interstitially Alloyed Phase in Mg/C60 Composite
신재혁,Sock-yeon Yoon,최현주,신세은,배동현 대한금속·재료학회 2013 METALS AND MATERIALS International Vol.19 No.4
The formation of an interstitially alloyed phase and its effects on mechanical properties are investigated for a magnesium-based composite containing fullerene (Mg/C60). The Mg/C60 composite was fabricated using the ball milling method followed by hot rolling and then the composite sheet was annealed at 425°C for up to 37 h. The fullerene was dispersed during the ball milling process and it was decomposed. The carbon atoms from the decomposed fullerene diffused into the magnesium matrix, which increasingly occupied the octahedral sites of the magnesium as the annealing continued. The formed interstitially alloyed phase expanded as the annealing time increased, and magnesium carbide was formed after 37 h. Vickers hardness value increased as the interstitially alloyed phase continuously formed and it decreased when the magnesium carbide was formed, because the carbon atoms at the magnesium interstices may interact with moving dislocations,resulting in an increase in the hardness of the magnesium.
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