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기술수용모델과 계획된 행동이론을 적용한 O2O 앱의 사용 의도의 영향에 관한 연구
Fu,Hanjinzhu(Hanjinzhu Fu),김철중(Chul-Jung Kim) 한국무역연구원 2022 무역연구 Vol.18 No.6
Purpose – The purpose of this study is to contribute to the development of research literature by verifying the factors that affect the intention to use O2O apps, which are innovative technologies, and by presenting managerial implications. Design/Methodology/Approach – The technology acceptance model and the planned action theory were integrated into the theoretical background of this research model with various product choices and convenience as external variables. Data were collected through Google online surveys, and model validity and reliability were analyzed using SPSS and AMOS statistical programs. Findings – By integrating the TAM and TPB modelswe found that the strongest predictor of intention to use was perceived behavioral control. The role of external variables was confirmed. Research Implications – It was confirmed that both convenience and product diversity are related to determining the usefulness of O2O apps. Since perceived behavioral control is the variable that best predicts intention to use, administrators should define services that can maximize individual purchasing abilities.
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Fu‑Sheng Pai,Po‑Sheng Tseng 대한전기학회 2020 Journal of Electrical Engineering & Technology Vol.15 No.3
Regardless of whether level 1, level 2, or dc fast charging, several methods are under development or available as an aftermarket option for Plug-in electric vehicles (EVs). While confning the charging behavior of EVs to low-load periods is diffcult, it leads to signifcant and uncertain load peaks and valleys in the utility power network. Therefore, this paper proposes a new method for an electric vehicle charger. The proposed charging method involves power supervisory characteristics on the basis of the paradigm of a constant-current and a constant-voltage (CC–CV) charger so that the external commands from the demand-side resource aggregator in the smart grid can be executed. In the method, frst, a feedback loop is included in the controller to formulate the relationship between battery voltage and charging power as a quadratic concave downward polynomial. The controlled output power at the beginning of constant voltage charging is then set to the maximum value of the quadratic polynomial because the charging power requirement near this point is closed to the highest. Hence, if the charging power is lower than the allowable maximum power, the proposed charger is determined to have followed the traditional CC–CV charging steps. On contrast, the proposed circuit launches the power control loop when the actual charging power is beyond the maximum power limitation of aggregator. The proposed charger can keep the power consumption inside an allowable range of aggregator. That is the power consumption at the EV charging sites becomes directly programmable by their aggregators. The proposed method is examined by conducting an interactive test of a remote energy management system and the proposed controller. The results revealed that the proposed method provide an easy method to dynamically control consumption pattern of the EV charging for demand-side power management.
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Fu‑xiang Cao,Kun‑kun Deng,Cui‑ju Wang,Kai‑bo Nie,Wei Liang,Jian‑feng Fan 대한금속·재료학회 2021 METALS AND MATERIALS International Vol.27 No.12
The 10 μm 10 vol% SiCp/2024Al composites sheet was successfully fabricated by semi-solid stir casting followed withtwo-step deformation (extrusion and rolling). The two-step thermal deformation solves the sheet rolling formability of theSiCp/2024Al composites produced by stir casting. Compared with the SiCp/2024Al composites prepared by traditional powdermetallurgy, this paper innovatively studied the synergistic enhancement between CuAl2phase and SiCpon the mechanicalproperties. The result shows that the two-step deformation can significantly improve the uniformity of the distribution of SiCpand CuAl2phases. At the same time, the average size of the SiCpand CuAl2phase decreases after the two-step deformation. During the hot extrusion, SiCphas an obvious hindrance to the refinement of the CuAl2phase. Moreover, the SiCp/2024Alcomposites sheet exhibits excellent yield strength (295 MPa), ultimate tensile strength (489 MPa), and elongation (10.42%). The performance improvement of SiCp/2024Al after two-step thermal deformation is mainly attributed to the improvedinterface bonding strength of SiCp-2024 Al matrix, the refined SiCpand the more uniform distribution of SiCp.
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A Survey on the Logistics Service Providers in China
Fu,Qin Qin,Bae,Jung Han 한국무역상무학회 2008 貿易商務硏究 Vol.40 No.-
This paper analyses the results of a survey questionnaire which is made for logistics service providers in Shanghai, China, Based on 177 valid providers' responses, the study results show that the logistics industry of China consists mainly of small and medium-sized companies. Furthermore, most of the logistics companies are highly capable of providing traditional logistics services and lack of the capability to provide other value-added logistics services. Their self-assessments indicate that they generally perform well in different types of performance measures. This study indicates that the market for 3PL services in China has a reasonable potential for further development, though 3PL practices are still at a nascent stage in China. This paper presents full details and implications of the results of the survey and then tries to provide some helpful suggestion for the development of chinese logistics companies.
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Fu‑an Hua,Hong‑wu Song,Tao Sun,Jian‑ping Li 대한금속·재료학회 2020 METALS AND MATERIALS International Vol.26 No.3
A model based on inter-diffusion theory was established to predict growth kinetics of the intermetallic compounds (IMCs)formed in roll bonded Al/Cu sheets during annealing process. The model can give good prediction of both IMC layers growthkinetics and element concentration distribution at the interface of roll bonded Cu/Al sheets with different thickness underdifferent annealing conditions with certain roll reduction range. It is revealed that the calculated results of the proposedmodel are depended on the inter-diffusion coefficient of each components, which could be related to the interface bondingstate, i.e., bonding methods or rolling reductions for roll bonding. And there was big difference in inter-diffusion coefficientof Al and Cu matrix under different bonding state, while the inter-diffusion coefficient of IMCs changed slightly.
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박후나,차옥선 漢陽大學校 韓國生活科學硏究所 1994 韓國 生活 科學 硏究 Vol.- No.12
The Purpose of this study is to investigate the vegetable yellow dyes with gardenia and curcuma. After extraction of dyes from gardenia and curcuma, the concentrations of two dyes were compared through light absorbancy comparision. Dyeing effect(△K /S), color, wash fastness, light fastness, drycleaning records were also compared by observations according to the different variations of dyeing temperatures(30℃, 50℃, 80℃) and mordanting agents(Aluminium Potassium, Potassium Chromate) The result of this study are summarized as follows : 1.Gardenia dyes have higher yellow color concentration than curcuma dyes. 2.Dyeing effect Effect of dyeing temperature △K /S value is the highest at 50℃ Effect on materials : △K/S value is higher on silk than on cotton Gardenia dyes have higher △K /S value on silk, while curcuma dyes have higher value on cotton. 3.In Munsell system, the hue of gardenia dyes is 10YR and that of curcuma dyes is 5Y. Curcuma dyes have relatively higher value than gardenia dyes have. Compared with cotton, silk has higher chroma but lower value. At higher dyeing temperature gardenia dyes have lower chroma, while curcuma dyes have higher chroma with lower value 4.Color fastness test : 1) Wash fastness Gardenia dyes mark best fastness at dyeing temperature 80℃. With gardenia dyes, Cr mordanting agent marks better fastness than Al mordanting. On materials cotton has better than silk. Curcuma dyes mark best fastness at dyeing temperture 30℃. With curcuma dyes, Cr mordanting marks better fastness than Al mordanting. Curcuma dyes have, compared with gardenia dyes, better wash fastness on silk, while gardenia dyes have better fastness on cotton. 2) Light fastness Both dyes, gardenia and curcuma mark the grade I. 3) Drycleaning Gardenia dyes mark best fastness at dyeing temperature 80℃. Gardenia dyes make better fastness on cotton with Al mordanting. But on silk, non-mordanting treated materials make relatively better effect. Curcuma dyes mark best fastness at dyeing temperature 30℃. Curcuma dyes mark better fastness on cotton with Al mordanting. But on silk, non-mordanting treatment method makes relatively better fastness effect.
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