• 한국전기전자재료학회논문지
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• 제25권12호
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• pp.969-973
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• 2012

AlN thin films were deposited on p-type Si(100) substrates by RF magnetron sputtering method. This study showed the change of the preferential orientation of AlN thin films deposition with the change of the deposition conditions such as sputtering pressure and Ar/N2 gas ratio in chamber. It was identified by X-ray diffraction patterns that AlN thin film deposited at low sputtering pressure has a (002) orientation, however its preferred orientation was changed from the (002) to the (100) orientation with increasing sputtering pressure. Also, it was observed that the properties of AlN thin films such as thickness, grain size and surface roughness were largely dependent on Ar/$N_2$ gas ratio and a high quality thin film could be prepared at lower nitrogen concentration. AlN thin films were investigated relationship between preferential orientation and deposition condition by using XRD, FE-SEM and PFM.

• Journal of Electrical Engineering and Technology
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• 제12권4호
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• pp.1675-1682
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• 2017

This paper deals with three dimensional orientation estimation algorithm for an attitude and heading reference system (AHRS) based on nine-axis inertial/magnetic sensor signals. In terms of the orientation estimation based on the use of a Kalman filter (KF), the quaternion is arguably the most popular orientation representation. However, one critical drawback in the quaternion representation is that undesirable magnetic disturbances affect not only yaw estimation but also roll and pitch estimations. In this paper, a sequential direction cosine matrix-based orientation KF for AHRS has been presented. The proposed algorithm uses two linear KFs, consisting of an attitude KF followed by a heading KF. In the latter, the direction of the local magnetic field vector is projected onto the heading axis of the inertial frame by considering the dip angle, which can be determined after the attitude KF. Owing to the sequential KF structure, the effects of even extreme magnetic disturbances are limited to the roll and pitch estimations, without any additional decoupling process. This overcomes an inherent issue in quaternion-based estimation algorithms. Validation test results show that the proposed method outperforms other comparison methods in terms of the yaw estimation accuracy during perturbations and in terms of the recovery speed.

• Asia pacific journal of information systems
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• 제9권4호
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• pp.163-179
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• 1999

MIS personnel should not only be capable of developing technically sounded systems, but also act as the companion role of strategic management. For this reason, it is important to direct efficient human resource management for MIS personnel. For directing efficient MIS human resource management, this paper studies the relationship of major types of MIS career orientation, job satisfaction and organizational commitment based on the work area of MIS personnel, Based on the empirical analysis using questionnaires answered from MIS personnel of Korean public and private enterprises, the hypotheses of this study were proved. The result of this research shows most of the domestic MIS personnel tends to line up with technology and management favoritism for their career orientation. If an individual career orientation and his or her work area are matched, it presents higher job satisfaction. Furthermore, a group of management orientation shows higher organizational commitment than a group of technology arientation among MIS personnel with identical job satisfaction. Therefore, this study suggests that career orientation of MIS personnel affect the job satisfaction and organizational commitment. In the future, a career management system suitable to the MIS personnel should be developed to improve the effectiveness of MIS organization.

• 한국산학기술학회:학술대회논문집
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• 한국산학기술학회 2011년도 추계학술논문집 1부
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• pp.78-81
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• 2011

본 연구는 서부 경남 및 부산지역 비영리조직을 중심으로 한 기업가지향성과 시장지향성 그리고 경영성과 간의 매개모형을 연구하고자 하였다. 결과적으로, 가설 1 은 기업가지향성인 위험감수성은 경영성과인 재무성과는 유의한 영향을 미치지 못했으며, 그리고 가설 2 부터가설 8까지는 유의한 영향을 미치는 것으로 나타나 가설이 채택되었다. 본 연구는 향후 비영리조직과 단체의 다양한 분야에서 적합한 시스템 도입에 유용한 자료가 될 수 있을 것이다.

• 대한원격탐사학회:학술대회논문집
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• 대한원격탐사학회 2002년도 Proceedings of International Symposium on Remote Sensing
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• pp.74-74
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• 2002

This paper describes a corner matching technique for automatic relative orientation. Automatically matched corner points from stereo aerial images are used to a data set and help to improve automation of relative orientation process. A general corner matching process of overall image to image has very heavy operation and repetitive computation, so very time-consuming. But aerial stereo images are approximately seventy percent overlapped and little rotated. Based this hypothesis, we designed a sectional corner matching technique calculating correlation section by section between stereo images. Although the overlap information is not accurate, if we know it approximately, the matching process can be lighter. Since the size of aerial image is very large, corner extraction process is performed hierarchically by creating image pyramid, and corners extracted are refined at the higher level image. Extracted corners at the final step are matched section by section. Matched corners are filtered using positional information and their relation and distribution. Filtering process is applied over several steps because the thing affecting to get good result-good relative orientation parameter- is not the number of matched corner points but the accuracy of them. Filtered data is filtered one more during the process calculating relative orientation parameters. When the process is finished, we can get the well matched corner points and the refined Von-Gruber areas besides relative orientation parameters. This sectional corner matching technique is efficient by decreasing unnecessarily repetitive operations and contributes to improve automation for relative orientation.

• 벤처혁신연구
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• 제6권1호
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• pp.115-137
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• 2023

본 연구에서는 디지털 전환시대에 선도적인 관점에서 신기술을 흡수하고 혁신적 변화가 요구되고 있는 IT-BPO 기업을 대상으로 조직 핵심역량과 흡수역량이 시장지향성 및 기술지향성에 미치는 관계를 분석하고, 나아가 경영성과에 미치는 관계를 분석하고자 하였다. 이를 위한 연구방법으로 국내 IT-BPO 비즈니스를 수행하고 있는 업체를 대상으로 온라인 전문리서치 업체 및 오프라인 설문조사를 병행하여 291부를 회수하였으며, 분석방법으로는 기술통계와 신뢰도 분석에는 SPSS 23, 타당성, 매개효과를 포함한 연구가설 검증은 AMOS23을 이용하여 분석하였다. 주요 분석결과, 첫째, 혁신역량과 흡수역량 요인이 시장지향성에 미치는 관계에서는 학습역량과 지식네트워크 역량이 시장지향성에 통계적으로 유의한 정(+)의 영향을 미치는 것으로 나타났다. 혁신역량과 흡수역량 요인이 기술지향성에 미치는 관계에서는 R&D역량, 잠재적 흡수역량 및 실현적 흡수역량이 통계적으로 유의한 정(+)의 영향을 미치는 것으로 나타났다. 둘째, 혁신역량과 흡수역량 요인이 경영성과에 미치는 영향 관계에서는 R&D역량만이 통계적으로 유의한 정(+)의 영향 관계를 가지는 것으로 나타났다. 셋째, 시장지향성과 기술지향성이 경영성과에 미치는 관계에서는 시장지향성과 기술지향성 모두 경영성과에 통계적으로 유의한 정(+)의 영향을 미치는 것으로 나타났다. 이러한 연구결과는 IT-BPO 기업이 성장과 가치창출을 높이기 위해 추구하는 시장지향성이나 기술지향성 유형에 따라 효과적인 역량요인을 제시함으로써 전략 목적에 따른 차별적 역량 강화방안에 하나에 시사점을 제시할 것으로 보인다.

• 센서학회지
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• 제19권3호
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• pp.202-208
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• 2010

This study examined the dependency of crystalline orientation and electric properties of sol-gel PZT film on hydrolysis, a $PbTiO_3$ seed layer and a concentration of sol-gel solution. The PZT thin films were prepared by using 2-Methoxyethanol-based sol-gel method and spin-coating on Pt/Ti/$SiO_2$/Si substrates. The 1-${\mu}m$-thick PZT films were coated and then fired in a furnace by direct insert method. The highly (111) oriented PZT film of pure perovskite structure could be obtained. We could control the degree of orientation by various parameters such as hydrolysis, a $PbTiO_3$ seed layer and a concentration of sol-gel solution. The highest measured remanent polarization, dielectric constant and piezoelectric coefficient are $24.16\;{\mu}C/cm^2$, 2808, and 159 pC/N, respectively.

• Composites Research
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• 제28권5호
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• pp.270-276
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• 2015

Polyvinylidene fluoride (PVDF)-based nanocomposites are fabricated by incorporation of boron nitride (BN) nanosheets with anisotropic orientation for a potential high thermal conducting ferroelectric materials. The PVDF is dissolved in dimethylformamide (DMF) and homogeneously mixed with exfoliated BN nanosheets, which is then cast into a polyimide film under application of high magnetic fields (0.45~10 T), where the direction of the filler alignment was controlled. The BN nanosheets are exfoliated by a mixed way of solvothermal method and ultrasonication prior to incorporation into the PVDF-based polymer suspension. X-ray diffraction, scanning electron microscope and thermal diffusivity are measured for the characterization of the polymer nanocomposites. Analysis shows that BN nanosheets are exfoliated into the fewer layers, whose basal planes are oriented either perpendicular or parallel to the composite surfaces without necessitating the surface modification induced by high magnetic fields. Moreover, the nanocomposites show a dramatic thermal diffusivity enhancement of 1056% by BN nanosheets with perpendicular orientation in comparison with the pristine PVDF at 10 vol % of BN, which relies on the degree of filler orientation. The mechanism for the magnetic field-induced orientation of BN and enhancement of thermal property of PVDF-based composites by the BN assembly are elucidated.

• 열처리공학회지
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• 제33권1호
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• pp.1-12
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• 2020

In this study, thin foil fabrication using Ni/Ni₃Al single crystal was performed by cold-rolling. It was found that the cold-rolling behavior was strongly dependent on the initial crystallographic orientation rather than morphology of Ni₃Al precipitates. The deformation banding was formed in the case of (100)[001]- and (210)[001]-oriented specimens at 83% reduction in thickness. However, the effects of Ni₃Al precipitates morphology on the microstructure evolution of Ni/Ni₃Al single crystals during cold-rolling were not so serious comparing with the effects of initial crystallographic orientation. Therefore, it could be concluded that the deformation behavior of Ni/Ni₃Al single crystals at serious strain level was strongly dependent on the initial crystallographic orientation rather than the morphology of Ni₃Al precipitates, whereas the initial deformation behavior was related to both crystallographic orientation and the morphology of Ni₃Al precipitates.

• 디지털융복합연구
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• 제10권11호
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• pp.203-208
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• 2012

본 연구에서 환대산업의 대표적인 기업은 호텔기업을 대상으로 정보시스템 구축이 고객지향성, 서비스지향성, 성과간의 영향관계를 파악하고자 했다. 부산, 서울지역에 소재하는 호텔에 종사하는 종사원을 대상으로 편의추출방식으로 표본을 추출하여 조사하였다. 연구결과의 도출을 하기 위하여 선행연구를 근거로 연구가설을 설정하였으며 정보시스템 구축이 고객지향성, 서비스지향성, 성과간의 영향관계를 파악하였다. 가설검증결과 정보시스템 구축의 기술수용모델 중 유용성은 서비스지향성과 고객지향성이 유의한 영향을 미쳤으나 용이성은 서비스지향성과 고객지향성에 대하여 유의한 영향을 미치지 않고 있었다. 또한 서비스지향성과 고객지향성에서는 경영성과에는 유의한 결과가 도출이 되었으나 개인성과에는 유의한 결과가 도출되지 않았다.