• 벤처혁신연구
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• 제5권4호
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• pp.75-90
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• 2022

본 연구는 소상공인의 사업역량과 디지털역량이 사업만족에 미치는 영향관계를 실증 분석하기 위하여 이루어졌다. 이를 위해 사업역량을 세분화해서 소상공인의 업종전문성, 고객관리전문성으로 나누었다. 디지털역량은 SNS활동성, ICT사용용이성, ICT사업활용성으로 세분화하였다. 이들 요인들이 사업만족도에 영향을 미침에 있어서 1인 미디어 교육성과에 따라 어떻게 달라지는지를 동시에 살펴보았다. 이를 실증 분석하기 위해 1인 미디어 교육을 받은 사람을 대상으로 온라인 설문조사를 하였으며 유효한 200개를 분석대상으로 삼았다. 통계분석에는 SPSS 24.0와 Macro Process 4.0을 활용하였다. 본 연구의 실증 분석 결과, 업종전문성, 고객관리전문성, SNS활동성, ICT사업활용성은 사업만족도에 유의한 정(+)의 영향을 미쳤다. 반면, ICT사용용이성은 유의한 영향관계가 검정되지 않았다. 사업만족도에 미치는 영향력은 업종전문성과 ICT사업활용성이 큰 영향을 미치는 것으로 나타났다. 1인 미디어 교육성과는 SNS활동성, ICT 사업활용성과 사업만족도 사이의 조절역할을 하는 것으로 분석되었다. 본 연구 결과는 디지털역량의 중요성이 증대되는 시점에서 소상공인에 있어서도 이러한 역량이 사업만족도에 지대한 영향을 미친다는 점을 실증적으로 분석했다는 측면에서 의의가 있다.

• 벤처혁신연구
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• 제6권3호
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• pp.241-263
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• 2023

최근 중소기업 경영자의 고령화는 기업승계에 있어 주요한 이슈로 부상하고 있다. 우리나라 산업기반인 중소기업의 원활한 승계는 단순히 상속의 논의를 넘어 고용창출 등 국가경제 활력 제고에 중요한 사안이 되고 있다. 이러한 시점에서 본 연구는 기업승계 의도에 미치는 요인에 대해 실증 분석을 했다. 독립변수로는 직원 역량, 마케팅 역량, 디지털 역량으로 구성된 기업 역량과 경영자, 후계자, 제3의 이해관계인과 같은 인적 요인 및 제도적 요소인 법제, 세제, 신탁을 설정하였다. 아울러 매출액 규모의 조절효과를 검증하였다. 설문조사는 중소기업을 운영하고 있는 대표자를 대상으로 실시하였고 총 유효한 설문은 315부였다. 실증분석은 설문조사를 기반으로 위계적회귀분석 방법으로 진행하였다. 실증 분석 결과는 다음과 같다. 첫째, 마케팅 역량과 디지털 역량, 경영자 역량과 후계자 역량, 세제와 신탁은 기업승계 의도에 유의한 정(+)의 영향을 주는 것으로 분석됐다. 하지만 제3의 이해관계인과 직원 역량 및 법제는 기업승계 의도에 유의한 영향을 미치지 않는 것으로 나타났다. 유의한 영향을 주는 변인들 중에서 그 영향력의 크기는 세제, 후계자 역량, 경영자 역량, 신탁, 마케팅 역량, 디지털 역량 순으로 나타났다. 둘째, 매출액 규모는 기업승계 의도에 유의한 영향 관계를 보인 변인들 즉 경영자 역량, 후계자 역량, 마케팅 역량, 디지털 역량, 세제 및 신탁과 기업승계 의도간의 관계를 조절하는 것으로 나타났다. 이러한 연구 결과를 바탕으로 원활한 기업승계를 위한 학술적, 실무적 및 제도적 시사점을 제시하였다.

• 한국재료학회지
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• 제30권4호
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• pp.211-216
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• 2020

Amorphous In-Ga-Zn-O (a-IGZO) thin film transistors, because of their relatively low mobility, have limits in attempts to fulfill high-end specifications for display backplanes. In-Zn-O (IZO) is a promising semiconductor material for high mobility device applications with excellent transparency to visible light region and low temperature process capability. In this paper, the effects of working pressure on the physical and electrical properties of IZO films and thin film transistors are investigated. The working pressure is modulated from 2 mTorr to 5 mTorr, whereas the other process conditions are fixed. As the working pressure increases, the extracted optical band gap of IZO films gradually decreases. Absorption coefficient spectra indicate that subgap states increase at high working pressure. Furthermore, IZO film fabricated at low working pressure shows smoother surface morphology. As a result, IZO thin film transistors with optimum conditions exhibit excellent switching characteristics with high mobility (≥ 30㎠/Vs) and large on/off ratio.

• 한국수소및신에너지학회논문집
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• 제23권1호
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• pp.8-18
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• 2012

This paper presents a three-dimensional, transient cold-start polymer electrolyte fuel cell (PEFC) model to numerically evaluate the effects of membrane electrode assembly (MEA) design and cell location in a PEFC stack on PEFC cold start behaviors. The cold-start simulations show that the end cell experiences significant heat loss to the sub-freezing ambient and thus finally cold-start failure due to considerable ice filling in the cathode catalyst layer. On the other hand, the middle cells in the stack successfully start from $-30^{\circ}C$ sub-freezing temperature due to rapid cell temperature rise owing to the efficient use of waste heat generated during the cold-start. In addition, the simulation results clearly indicate that the cathode catalyst layer (CL) composition and thickness have an substantial influence on PEFC cold-start behaviors while membrane thickness has limited effect mainly due to inefficient water absorption and transport capability at subzero temperatures.

• 산업경영시스템학회지
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• 제24권68호
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• pp.85-94
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• 2001

Most of customers want to know how to develop the computer system they want to get to use according to the their requirements. This study presents a Computer Integration management System for Quality (CISQ) model for system-integration organizations, which need to demonstrate their capability to consistently provide computer integrated system that meets customer satisfaction and applicable regulatory requirements. The Plan.Do.Check.Act(PDCA) cycle called by Doming wheel expresses the basic concept of continuous improvement action in order to emphasize on achieving business goal. It is useful for providing full competence of a system-integration organization to integrate management systems based on the international management system, and to take an advantage in its market. This study specifies International Certification Network Business Excellence Concept(IBEC) approach to ensure a harmonized integration of the variety of management systems and thereby produce synergy effect. The end part of this study specifies a Assessment Model including an assessment concept adding to the compliance audit according to the CISQ for the continuous improvement. A simple application on Failure Modes and Effects Analysis(FMEA) in testing phase in project life cycle has been done.

• Advances in nano research
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• 제8권1호
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• pp.25-36
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• 2020

Rotating systems concern with torsional vibration, and it should be considered in vibration analysis. To do this, the time-dependent torsional vibrations in a single-walled carbon nanotube (SWCNT) under the linear and harmonic external torque, are investigated in this paper. Eringen's nonlocal elasticity theory is considered to demonstrate the nonlocality and constitutive relations. Hamilton's principle is established to derive the governing equation of motion and consequently related boundary conditions. An analytical method, called the Galerkin method, is utilized to discretize the driven differential equations. Linear and harmonic torsional loads, along with determined amplitude, are applied to the SWCNT as the external torques. SWCNT is considered under the clamped-clamped end supports. In free vibration, analysis of small scale effect reveals the capability of natural frequencies in different modes, and this results desirably are in coincidence with another study. The forced torsional vibration in the time domain, especially for carbon nanotubes, has not been done before in the previous works. The previous forced studies were devoted to the transverse vibrations. It should be emphasized that the dynamical analysis of torsion is novel, workable, and at the beginning of the path. The variations of nonlocal parameter, CNT's thickness, and the influence of excitation frequency on time-dependent angular displacement and nondimensional angular displacement are investigated in the context.

• Nuclear Engineering and Technology
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• 제50권8호
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• pp.1306-1313
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• 2018

The randomness and incipient nature of certain faults in reactor systems warrant a robust and dynamic detection mechanism. Existing models and methods for fault diagnosis using different mathematical/statistical inferences lack incipient and novel faults detection capability. To this end, we propose a fault diagnosis method that utilizes the flexibility of data-driven Support Vector Machine (SVM) for component-level fault diagnosis. The technique integrates separately-built, separately-trained, specialized SVM modules capable of component-level fault diagnosis into a coherent intelligent system, with each SVM module monitoring sub-units of the reactor coolant system. To evaluate the model, marginal faults selected from the failure mode and effect analysis (FMEA) are simulated in the steam generator and pressure boundary of the Chinese CNP300 PWR (Qinshan I NPP) reactor coolant system, using a best-estimate thermal-hydraulic code, RELAP5/SCDAP Mod4.0. Multiclass SVM model is trained with component level parameters that represent the steady state and selected faults in the components. For optimization purposes, we considered and compared the performances of different multiclass models in MATLAB, using different coding matrices, as well as different kernel functions on the representative data derived from the simulation of Qinshan I NPP. An optimum predictive model - the Error Correcting Output Code (ECOC) with TenaryComplete coding matrix - was obtained from experiments, and utilized to diagnose the incipient faults. Some of the important diagnostic results and heuristic model evaluation methods are presented in this paper.

• 산경연구논집
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• 제14권11호
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• pp.11-18
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• 2023

Purpose: This study aims to respond to essential queries regarding significant impacts the Korean Wave had on the music business especially in light of K-pop's explosive growth on the international scene and how to transform Hallyu into the global dynamics of the music business. Also, the study investigates what degree of cultural bridging through Music's universal language has Kpop achieved beyond its status as a purely musical genre. Research design, data and methodology: For the process of data collecting, the current investigators used a combination of keywords and controlled vocabulary terms to conduct in-depth searches across reputable academic databases, including PubMed, Scopus, Web of Science, and Google Scholar. Keywords are significant in searching databases such that the desired articles can be sought out wiith the keywords "Korean Wave," "Hallyu," and "music industry,". Results: The investigators found the globalization of K-pop, diverse audience engagement, digital transformation, and cultural exchange through Music as four critical effects of the Korean Wave on the music business. Conclusions: Lastly, this study concludes that As we end our investigation into Hallyu's effects on the music business, it is clear that Korean Music's cultural impact and international appeal have created new opportunities and particular difficulties for both professionals and artists.

• 벤처창업연구
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• 제14권1호
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• pp.73-83
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• 2019

창업의 중요성에 대한 인식이 높아지면서 인생의 진로를 창업으로 결정하는 예비 창업가들이 점진적으로 많아지고 있다. 하지만 창업 실패율은 여전히 높고, 창업성과가 미비하여 질적인 수준은 매우 낮다. 이에 본 연구에서는 창업가 역량특성, 창업지원제도에 대한 관심을 가지고, 창업성과에 어떠한 영향을 미치는지 실증 분석하였다. 이를 위해 2018년 8월 1일부터 8월30일까지 전라북도의 7년 미만 창업가를 대상으로 361개의 유효데이터를 수집하여 SPSS 21.O, AMOS 21을 통해 연구검증에 활용하였다. 연구결과 첫째, 창업가 역량특성(기업가적 역량, 관리적 역량)이 창업지원제도에 유의미한 정(+)의 영향을 미치고, 기술적 역량은 유의미한 효과가 없는 것으로 나타났다. 둘째, 창업가 역량(기업가 역량, 관리적 역량, 기술적 역량)이 창업성과에 유의미한 영향을 미치는 결과가 증명되었다. 단, 기업가적 역량은 창업성과에 음(-)의 유의미한 영향을 미치는 의미 있는 결과가 나왔다. 셋째, 창업지원제도는 창업성과에 정(+)의 유의미한 영향을 미치는 것으로 나타났다. 끝으로 창업지원제도는 기업가적 역량과 창업성과 사이에 매개 효과가 있음을 검증하였다. 본 연구의 시사점은 창업기업들의 창업성과를 높이기 위해서는 창업가 역량 함양이 중요한 요인이라는 것을 증명하였다. 또한 창업지원제도 활용은 직 간접적으로 창업 성과에 유의미한 영향을 미치는 중요한 요소임을 실증연구를 통해 증명하였으며, 적극적으로 창업 지원 및 활용하는 것이 창업성과를 높이기 위해서는 반드시 필요한 부분이라는 것을 증명하였다.

• Nuclear Engineering and Technology
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• 제52권3호
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• pp.469-476
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• 2020

Research reactors in-core experimental facilities are designed to provide the highest steady state flux for user's irradiation requirements. However, fuel conversion from highly enriched uranium (HEU) to low enriched uranium (LEU) driven by the ongoing effort to diminish proliferation risk, will impact reactor physics parameters. Preserving the reactor capability to produce the needed flux to perform its intended research functions, determines the conversion feasibility. This study investigates the neutron flux in the central experimental facility of two material test reactors (MTR), the IAEA generic10 MW benchmark reactor and the 22 MW s Egyptian Test and Research Reactor (ETRR-2). A 3D full core model with three uranium enrichment of 93%, 45%, and 20% was constructed utilizing the OpenMC particle transport Monte Carlo code. Neutronics calculations were performed for fresh fuel, the beginning of life cycle (BOL) and end of life cycle (EOL) for each of the three enrichments for both the IAEA 10 MW generic reactor and core 1/98 of the ETRR-2 reactor. Criticality calculations of the effective multiplication factor (K_eff) were executed for each of the twelve cases; results show a reasonable agreement with published benchmark values for both reactors. The thermal, epithermal and fast neutron fluxes were tallied across the core, utilizing the mesh tally capability of the code and are presented here. The axial flux in the central experimental facility was tallied at 1 cm intervals, for each of the cases; results for IAEA 10 MW show a maximum reduction of 14.32% in the thermal flux of LEU to that of the HEU, at EOL. The reduction of the thermal flux for fresh fuel was between 5.81% and 9.62%, with an average drop of 8.1%. At the BOL the thermal flux showed a larger reduction range of 6.92%-13.58% with an average drop of 10.73%. Furthermore, the fission reaction rate was calculated, results showed an increase in the peak fission rate of the LEU case compared to the HEU case. Results for the ETRR-2 reactor show an average increase of 62.31% in the thermal flux of LEU to that of the HEU due to the effect of spectrum hardening. The fission rate density increased with enrichment, resulting in 34% maximum increase in the HEU case compared to the LEU case at the assemblies surrounding the flux trap.