• 대한약학회:학술대회논문집
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• 대한약학회 2000년도 춘계총회 및 학술대회
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• pp.198.1-198.1
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• 2000

• 한국산학기술학회논문지
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• 제19권11호
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• pp.191-204
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• 2018

다양성과 창의성의 시대에 지방이 스스로 생각하고 실행하는 지역발전 전략이 강조되고 있으며, 지역의 유산 재활용을 통한 지역차원의 재생효과와 지역자산으로의 가치에 대한 인식이 상승하고 있다. 상당기간 낙후 소외되어 온 지역의 시설과 공간을 기회자산으로 전환시킬 수 있는 도시재생방안 모색은 매우 의미 있는 일이라 하겠다. 본 연구는 산업유산의 지역자원화를 통해 내생적인 발전체계 구축하여 지역의 자립적인 발전을 추구할 가능성 모색에 있다. 사례분석과 계획적용 등을 통해 생활밀착형 문화공간이 대형, 전문예술공간보다 지역주민의 삶에 더 큰 영향을 준다는 점을 확인할 수 있었다. 지역의 비교우위보다는 지역자산의 경쟁우위 전략이 더욱 중요하며, 장래의 도심재생에서 한층 더 관심을 두어야 하는 요소는 도시의 역사와 전통, 철학 등 무형적인 가치라는 사실을 인지하는 것이 필요하고, 사람이 중심이 되어 예술적인 생태성과 전통의 복원, 공동체성 창출, 미학성 추구 등을 통해 문화정체성을 가진 장소로 창조되는 것이 진정한 도시재생이 된다는 점이다.

• 한국지반공학회:학술대회논문집
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• 한국지반공학회 2004년도 춘계학술발표회
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• pp.922-929
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• 2004

In some port construction, a case of reclamation with dredged soil for land use can be found. Even though this is not a new technology, there are some problems on the test method and analysis. The design parameters are still remained to be solved to get accurate prediction. Sedimentation of particle and self-weight consolidation are the most important design parameters in reclamation by dredged soils. The design parameters are influenced by properties of the physical and sedimentation of dredged soils. This influencing factors can be determined depend on the history of long term sedimentation and particle characteristics. Thus, properties of the sedimentation and consolidation are varies depend on the regional geologic formation. In this paper, three different sites with different regional soil properties will be compared in design parameters of sedimentation and self-weight consolidation.

• 기술혁신학회지
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• 제7권1호
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• pp.130-158
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• 2004

This paper aims at renewing the regional innovation system being embossed increasingly as a new paradigm to develop the regional area, using the innovational cluster based on the industrial properties and innovative base in Chungbuk province. As shown in the results of many researches, Chungbuk province is evaluated highly in regional innovation capability and is satisfied with the level of speciality in technical industry so that it has a potential capability to build the regional innovation system. However the clustering competition is growing in intensity between regional groups and there is a possible situation centralized by the high-tech industry into the metropolitan, so building the specialized innovation cluster requires advanced policy decisions and efforts in our won way. Ultimately, for the purpose of structuring the regional innovation system, the specialized innovation cluster reflected in regional industry and capability would be essential. It is time for Chungbuk province to prepare policies in order to make the Chungbuk-type innovation cluster which is neither uniform nor omnipresent.

• 한국표면공학회지
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• 제52권6호
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• pp.316-320
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• 2019

The effect of boronizing on mechanical properties including wear behavior and hardness of Inconel 625 superalloy were investigated. The cross-section observation demonstrated that boronized samples were composed of multi-phase boride layer (Cr_xB_x, Ni₂B), diffusion layer, and substrate. The boride and diffusion layers were increased with increasing treatment temperature and holding time. However, Cr_xB_x layer was partially peeled off when it treated 1000℃. Subsequently, boride layer was completely separated from substrate with increasing temperature and time. A partial peeling of Cr_xB_x layer is not noticeably degraded mechanical properties. In particular, friction coefficient and wear resistance were enhanced in lack of Cr_xB_x phase. Therefore, these results suggest that a Ni₂B phase mainly contribute to wear behavior on boronized Inconel 625 superalloy.

• Molecules and Cells
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• 제41권12호
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• pp.1081-1081
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• 2018

• 천문학회보
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• 제40권2호
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• pp.45.1-45.1
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• 2015

Hayabusa is the JAXA's space mission that succeeded in sample-return from S-type asteroid (25143) Itokawa. During the rendezvous phase, more than a thousand of images were taken with the Asteroid Multi-band Imaging Camera (AMICA). It is valuable to study the regional variation of the optical properties on the asteroid using these images to know the generality and uniqueness of the returned samples. In addition, AMICA images are important in that they provide unique data set at low phase angle (i.e Sun-Itokawa-AMICA's angle) that have not been explored in the previous asteroidal missions. At the previous conference (2015 KAS spring meeting), we introduced our preliminary data analysis of AMICA data without considering the shape model of Itokawa and mentioned. In this study, we present a new result obtained through further analysis, taking account of the shape model of the asteroid. We thus utilized "plate_renderer" tool to derive Hapke model parameters at different terrains. It is found that the opposition amplitude (parameter B0) is consistent with those of the other S-type asteroids while the opposition width (parameter h) is significantly narrower than those of the other S-type asteroids. At this conference, we plan to describe the regional variation of photometric properties on Itokawa.

• KIEAE Journal
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• 제6권2호
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• pp.11-18
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• 2006

In this research, Conducting an engineering properties experiment, this study examined basic properties of regional Hwangto. The results of experiments are as followings. 1) This study confirmed that a result of examining lime order for Hwangto and comparison of stimulants, this study confirmed that 28 day's strength promotion is found in case of calcium hydroxide(Ca(OH)2) and calcium chloride(CaCl2) stimulant. Finally, it is known the fact that lime highly improves the weak strength of Hwangtoh. 2) As XRD analysis for proving the strength manifestation principle of Hwangto by regions, CSH figure and CASH figure appeared in each regional Hwangto in all the strength areas. This result could be appeared through hydraulicity from reaction of alkali stimulant and water, and pozzolan reaction(CSH figure) and $Str{\ddot{a}}tlingite$ reaction(CASH figure) by silica (SiO2) ingredient and calcium hydroxide (Ca(OH)2) among ingredients of clay, and alumina(Al2O3). 3) In result of strength analysis, It is knowned that the Gyeongsangdo Hwangto is stronger than the Jeollado Hwangto in reactivity.

• 대한금속재료학회지
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• 제50권11호
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• pp.809-815
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• 2012

Recently, as the interest in improving energy efficiency has grown, the demand for vehicle and machine parts that are resistant in high temperature corrosive conditions and abrasive environments has increased. Pack chromizing treatment of sintered steels is a profitable method that satisfies both corrosion resistance and low friction properties. Since austenitic stainless steels have good corrosion resistance but low mechanical hardness, if they are replaced by sintered steel parts with pack chromizing treatment, all the desirable properties such as low price, easy molding, high hardness, low frictional coefficient, and high corrosion resistance, can be obtained. The higher corrosion resistance of the chromized parts over that of the austenitic stainless steels was acquired by coating chromium carbides and a thin chromium oxides layer on the surface. Moreover, the surface morphology of chromized parts, which were composed of chromium rich phases and hardened chromium carbides by diffusing and alloying, had a peak-and-valley shape so that the dimple effect by the wrinkled morphology and high hardness induced a low friction coefficient.

• 한국전기전자재료학회:학술대회논문집
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• 한국전기전자재료학회 2006년도 하계학술대회 논문집 Vol.7
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• pp.339-340
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• 2006

In this paper, disk-type ultrasonic motor using radial and bending vibration modes is newly designed and fabricated to measure its characteristics. As the diameter of elastic body increases, the resonant frequency decreases and its resonant frequency is about 92kHz when the physical dimensions of piezoelectric ceramic and elastic body are 28mm of diameter and 2mm of thickness, and 32mm of diameter and 2mm of thickness, respectively. When the applied voltage is 20Vpp. its speed and torque are 200rpm and 1N, respectively.