• 한국농공학회논문집
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• 제63권4호
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• pp.43-53
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• 2021

The purpose of this study is to analyze the factor influencing in order to increase the intention to revisit rural experience tourism. 181 men and women who had experienced rural experience tourism were surveyed in a Self-Assessment Questionnaire. Some farming experience, life experience, cultural experience, and leisure experience were set as independent variables as representative programs of rural experience tourism, satisfaction and trust as mediated variables, and relationships as dependent variables. Here, the relationship is regarded as a variable representing the intention to revisit. When performing multi-group path analysis by separating men and women, both men and women had a statistically significant positive (+) effect in the Leisure experience→Satisfaction path and the Trust→Relation path. In addition, the paths that were statistically significant for women were not statistically significant, but were statistically significant only for men were Farm experience→Satisfaction path, Farm experience→Relation path, and Leisure experience→Relation path. In addition, the paths that were not statistically significant for men, but statistically significant for women were Culture experience→Satisfaction and Trust→Satisfaction. According to this study, in order to increase the intention to revisit, both men and women should consider leisure experience. And men should emphasize farming experience, while women should emphasize cultural experience. It is considered that there is a need to further subdivide leisure experience, farming experience and cultural experience for the region. This study has a limitation of only 181 people. More large-scale research will be possible in the future.

• 한국콘텐츠학회논문지
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• 제21권6호
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• pp.180-196
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• 2021

본 연구는 스포츠 스타 인플루언서가 나오는 SNS 광고가치인 정보성, 오락성, 방해성, 신뢰성이 브랜드자산에 미치는 영향에 대해 살펴보았다. 또한 인플루언서 SNS 광고가치와 브랜드자산과의 관계에 미치는 팀동일시의 조절효과를 규명하였다. 대학생 350명을 대상으로 온라인 설문을 진행하였으며, 확인적 요인분석과 구조 방정식모형을 이용한 다집단분석을 실시하였다. 주요 결과로 스포츠 스타 인플루언서가 출연한 SNS 광고가치 중 정보성, 오락성, 신뢰성이 증가할수록 브랜드자산에 정적인 영향을 미친 것으로 확인되었다. 그러나 방해성은 브랜드자산에 유의미한 부적 영향이 나타나지 않았다. 또한 소비자의 팀동일시 수준이 낮은 집단에 비해 높은 집단이 오락성을 더 높게 지각한 반면 팀동일시 수준이 낮은 집단이 높은 집단에 비해 방해성을 더 높게 지각한 것으로 밝혀졌다. 본 연구는 스포츠 스타 인플루언서를 활용한 SNS 광고가치의 학문적 이해를 높일 수 있을 것으로 기대한다. 또한 팀동일시 수준에 따른 스포츠 인플루언서 광고가치 지각의 차이를 밝힘으로써 소비자의 스포츠 팬덤 강화와 브랜드자산 증대를 위한 시사점을 제공 할 것이다.

• 한국시뮬레이션학회논문지
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• 제29권4호
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• pp.55-64
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• 2020

2011년 한-EU 자유무역협정 발효 이후, 한국 자동차 시장은 급성장하였으며 시장 내 기업 간 경쟁 양상은 심화되고 있다. 유럽산 자동차 기업은 가격 경쟁력을 보유하게 되었고, 이로 인해 한국 자동차 기업과의 경쟁이 격화되었다. 이와 같은 상황 속에서 한국 자동차 시장에 관한 다양한 연구가 수행되어왔으나, 시장 영향요인 분석과 소비자 분석 등의 연구가 주를 이루었고 시장 내 경쟁 다이나믹스 분석에 관한 연구는 전무한 상황이다. 본 연구에서는 한국 자동차 시장 내 주요 기업인 현대자동차, 기아자동차, 메르세데스-벤츠, BMW의 경쟁 다이나믹스를 분석하였다. Lotka-Volterra(LV) 모형을 사용하여 주요 기업들의 경쟁 관계를 모델링하였고, Moving Window 기법을 적용하여 시간의 흐름에 따른 기업 간 경쟁 다이나믹스를 분석하고 이를 정량적으로 도출하였다. 효과적인 해석을 위해, 도출된 경쟁 다이나믹스는 다양한 영향요인을 바탕으로 세분화되어 분석하였다.

• 한국프랜차이즈경영연구
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• 제11권4호
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• pp.17-29
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• 2020

Purpose: As the untact culture has spread due to the recent COVID-19, the service industry as well as the beauty salon is shrinking. In order to overcome such a crisis in beauty salons, the lower dimension of beauty salon service quality is divided into servicescape, technical service, and employee service, and actions are taken with the 'perceived value of the customer' as a parameter. In this study, S-O-R(Stimulus-Organism-Response) theory was applied for customer-centered analysis, and gender and regularity were selected as moderator variables to add practical implications. Research design, data, and methodology: All constructs were measured using items developed and used in the previous study. A total of 261 questionnaires were collected online using NaverForm. The data were analyzed using factor analysis, correlation analysis, and measurement model analysis with SPSS 22.0 and AMOS 22.0. After testing the research model and hypothesis for the entire group, a multi-group analysis was conducted by dividing into male and female groups, regular customers, and non-regular customers. Results: First, this study showed that the service environment of beauty salon customers had a negative (-) effect on perceived utilitarian value, and the technical service and perceived hedonic value had a positive (+) effect on the customer's behavioral intention. Technical service and employee service had a positive (+) effect on perceived hedonic value, but perceived hedonic value did not affect customer's behavioral intention. Second, there is no statistically significant difference in each path between male and female groups. Third, there was a statistically significant difference between regular customers and non-regular customers, only the path that the servicescape influences the perceived hedonic value. Conclusion: According to the results of this study, technical service and utilitarian value should be considered in order to induce behavioral intention of customers, and technical service quality should be considered first. Also, operating a beauty salon requires a differentiated approach to the salon servicescape according to the ratio of non-regular and regular customers. The beauty salon servicescape generally showed negative practical value for non-regular customers, but positive for the Hedinic value for servicescape such as comfortable service and clean interior for regular customers.

• 한국측량학회지
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• 제39권2호
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• pp.113-122
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• 2021

Urban expansion, particularly converting sub-urban areas to residential and commercial land use in metropolitan areas, has been considered as a significant signal of regional economic development. However, this results in urban climate change. One of the key impacts of rapid urbanization on the environment is the effect of UHI (Urban Heat Island). Understanding the effects of urban land cover change on UHI is crucial for improving the ecology and sustainability of cities. This research reports an application of remote sensing data, GIS (Geographic Information Systems) for assessing effects of urban land cover change on the LST (Land Surface Temperature) and heat budget components in Ho Chi Minh City, where is one of the fastest urbanizing region of Vietnam. The change of urban land cover component and LST in the city was derived by using multi-temporal Landsat data for the period of 1998 - 2020. The analysis showed that, from 1998 to 2020 the city had been drastically urbanized into multiple directions, with the urban areas increasing from approximately 125.281 km² in 1998 to 162.6 km² in 2007, and 267.2 km² in 2020, respectively. The results of retrieved LST revealed the radiant temperature for 1998 ranging from 20.2℃ to 31.2℃, while that for 2020 remarkably higher ranging from 22.1℃ to 42.3℃. The results also revealed that given the same percentage of urban land cover components, vegetation area is more effective to reduce the value of LST, meanwhile the impervious surface is the most effective factor to increase the value of the LST.

• 한국컴퓨터정보학회논문지
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• 제27권4호
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• pp.161-167
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• 2022

본 연구는 공공기관의 경영 효율성과 재무적 성과와의 관련성을 분석하는 것을 목적으로 한다. 공공기관 경영정보 공개시스템에 공시된 공기업을 대상으로 2017년부터 2020년까지의 기간 동안 재무자료를 입수하여, 자료포락분석을 통해 경영 효율성을 측정하였다. 본 연구는 자료포락분석을 통한 경영 효율성 변수와 총자산이익률 및 매출액순이익률로 측정한 재무적 성과 간의 관련성을 다중회귀분석을 통해 분석하였다. 본 연구의 결과는 다음과 같다; 먼저 공기업의 경영 효율성은 총자산순이익률과 유의한 양의 관련성을 나타내었다. 이러한 결과는 매출액순이익률을 사용한 분석에서도 동일하게 나타났다. 이는 경영 효율성이 공기업의 재무적 성과를 개선시키는 요인임을 의미한다. 본 연구의 결과는 경영 효율성 증대를 통해 궁극적으로 공공기관의 재무적 안정성을 강화하고자 한 정부 전략이 유효하게 작용할 수 있음을 시사한다.

• Nuclear Engineering and Technology
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• 제54권8호
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• pp.3059-3072
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• 2022

A Jacobian-Free Newton Krylov Two-Nodal Coarse Mesh Finite Difference algorithm based on Nodal Expansion Method (NEM_TNCMFD_JFNK) is successfully developed and proposed to solve the three-dimensional (3D) and multi-group reactor physics models. In the NEM_TNCMFD_JFNK method, the efficient JFNK method with the Modified Incomplete LU (MILU) preconditioner is integrated and applied into the discrete systems of the NEM-based two-node CMFD method by constructing the residual functions of only the nodal average fluxes and the eigenvalue. All the nonlinear corrective nodal coupling coefficients are updated on the basis of two-nodal NEM formulation including the discontinuity factor in every few newton steps. All the expansion coefficients and interface currents of the two-node NEM need not be chosen as the solution variables to evaluate the residual functions of the NEM_TNCMFD_JFNK method, therefore, the NEM_TNCMFD_JFNK method can greatly reduce the number of solution variables and the computational cost compared with the JFNK based on the conventional NEM. Finally the NEM_TNCMFD_JFNK code is developed and then analyzed by simulating the representative PWR MOX/UO₂ core benchmark, the popular NEACRP 3D core benchmark and the complicated full-core pin-by-pin homogenous core model. Numerical solutions show that the proposed NEM_TNCMFD_JFNK method with the MILU preconditioner has the good numerical accuracy and can obtain higher computational efficiency than the NEM-based two-node CMFD algorithm with the power method in the outer iteration and the Krylov method using the MILU preconditioner in the inner iteration, which indicates the NEM_TNCMFD_JFNK method can serve as a potential and efficient numerical tool for reactor neutron diffusion analysis module in the JFNK-based multiphysics coupling application.

• Nuclear Engineering and Technology
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• 제54권2호
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• pp.523-531
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• 2022

In order to study the sensitivity and the uncertainty of the Moroccan research reactor TRIGA Mark II, a model of this reactor has been developed in our ERSN laboratory for use with the N-Particle MCNP Monte Carlo transport codes (version 6). In this article, the sensitivities of the effective multiplication factor of this reactor are evaluated using the ENDF/B-VII.0, ENDF/B-VII.1 and JENDL-4.0 libraries and in 44 energy groups, for the cross sections of the fuel (U-235 and U-238) and the moderator (H-1 and O-16). However, the quantification of the uncertainty of the nuclear data is performed using the nuclear code NJOY99 for the generation and processing of covariance matrices. On the one hand, the highest uncertainty deviations, calculated using the ENDFB-VII.1 and JENDL4.0 evaluations, are 2275, 386 and 330 pcm respectively for the reactions U₂₃₅(n, f), $ U_{235}(n\bar{\nu})$ and H₁(n, γ). On the other hand, these differences are very small for the neutron reactions of O-16 and U-238. Regarding the neutron spectra, in CT-mid plane, they are very close for the three evaluations (ENDF/B-VII.0, ENDF/B-VII.1 and JENDL-4.0). These spectra present two peaks (thermal and fission) around the energies 0.05 eV and 1 MeV.

• Journal of Preventive Medicine and Public Health
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• 제55권1호
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• pp.68-79
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• 2022

Objectives: This study investigated associations between ethnicity and malaria awareness in East Nusa Tenggara Province (ENTP), Indonesia. Methods: A community-based cross-sectional study was conducted upon 1503 adults recruited by multi-stage cluster random sampling. A malaria awareness questionnaire was used to collect data, according to which participants were classified as aware or unaware of malaria. Logistic regression was applied to quantify the strength of associations of factors with malaria awareness. Results: The participation rate in this study was high (99.5%). The participants were distributed relatively evenly among the Manggarai, Atoni, and Sumba ethnicities (33.0, 32.3, and 30.2%, respectively). Malaria awareness was significantly different amongst these groups; it was most common in the Manggarai ethnicity (65.1%; 95% confidence interval [CI], 59.9 to 70.3) and least common in the Sumba ethnicity (35.0%; 95% CI, 27.6 to 42.4). The most prominent factor influencing the malaria awareness in the Sumba and Manggarai ethnicities was education level, whilst it was socioeconomic status (SES) in the Atoni ethnicity. The likelihood of malaria awareness was significantly higher in adults with an education level of diploma or above (adjusted odds ratio [aOR], 21.4; 95% CI, 3.59 to 127.7 for Manggarai; aOR, 6.94; 95% CI, 1.81 to 26.6 for Sumba). Malaria awareness was significantly more common amongst high-SES adults in the Atoni group (aOR, 24.48; 95% CI, 8.79 to 68.21). Conclusions: Low education levels and low SES were prominent contributors to lower levels of malaria awareness in rural ENTP. Interventions should focus on improving malaria awareness to these groups to support the Indonesian government's national commitment to achieve a malaria elimination zone by 2030.

• Steel and Composite Structures
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• 제41권6호
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• pp.899-910
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• 2021

A 4-unknown shear deformation theory is applied to investigate the vibration of functionally graded plates under thermal environment. The plate is fabricated from a functionally graded material mixed of ceramic and metal with continuously varying material properties through the plate thickness. Three types of thermal loadings, uniform, linear and nonlinear temperature rises along the plate thickness are taken into account. The present theory contains four unknown functions as against five or more in other higher order shear deformation theories. The through-the-thickness distributions of transverse shear stresses of the plate are considered to vary parabolically and vanish at upper and lower surfaces. The present model does not require any problem dependent shear correction factor. Analytical solutions for the free vibration analysis are derived based on Fourier series that satisfy the boundary conditions (Navier's method). Benchmark solutions are firstly considered to evaluate the accuracy of the proposed model. Comparisons with the solutions available in literature revealed the good capabilities of the present model for the simulations of vibration responses of FG plates. Some parametric studies are carried out for the frequency analysis by varying the volume fraction profile and the temperature distribution across the plate thickness.