호텔에서의 고객 경험이 고객 충성도에 미치는 영향에 관한 연구

이개선(Kai Xuan Li),강양(Yang Jiang),김영태(Young Tae Kim) 한국호텔외식관광경영학회 2012 호텔경영학연구 Vol.21 No.4

Managers in the hotel industry who want to strengthen customer loyalty must prioritize their marketing strategies generating value through distinctive experience. To carry out such strategies, hotels can mainly orchestrate the three customer experience clues concerning the functioning, tangible quality, and employee quality of product and service. The three clues set can create a deep preference for a specific experience thus for a hotel`s products and services over their competitors. The current study is aimed at exploring the effects of these customer experience clues on both customer attitudinal and behavioral loyalty. 8 hotels located in the city-center of Beijing, which includes 2 local brands and 6 international brands have been chosen by convenient sampling methods to conduct the survey. It took about 2 weeks to collect the data, and a total of 400 questionnaires were distributed and an 83% useable rate of the questionnaire has been achieved. The collected data was then analyzed by SPSS 14.0. The research findings identified the corresponding factors of each customer experience clues and revealed that the functional, mechanic, and humanic clues have positive effects on attitudinal loyalty, while the mechanic and humanic clues directly affect customers` behavioral loyalty. Furthermore, the mechanic clues and the humanic clues are the best predictors for customer attitudinal loyalty and behavioral loyalty.

Characterization and Expression Profile Analysis of a New cDNA Encoding Taxadiene Synthase from Taxus media

Guo Yin Kai,Ling Xia Zhao,Lei Zhang,Zhu Gang Li,Bin Hui Guo,Dong Li Zhao,Xiao Fen Sun,Zhi Qi Miao,Ke Xuan Tang 한국생활환경학회 2005 BMB Reports Vol.38 No.6

Effect of Grinding Parameters on Industrial Robot Grinding of CFRP and Defect Formation Mechanism

Fangyuan Wang,Shanyong Xuan,Zongyu Chang,Kai Jin,Yulong Gao,Hao Wang,Qiye Song 한국정밀공학회 2024 International Journal of Precision Engineering and Vol.11 No.2

The use of industrial robots for grinding CFRP is a green processing method. This method not only allows in-situ repair to reduce unnecessary waste of resources, but also produces no excessive contaminants. The effect of various process parameters, including grinding directions, the mesh size of grinding heads and rotating speed, on the grinding quality of Carbon Fiber Reinforced Polymers (CFRP) using industrial robots was investigated. The mechanism of grinding defects was also studied. According to the experimental results, the CFRP grinding process is mainly controlled by the rotating speed, number of grinding heads, and grinding direction. In particular, high-speed grinding helps to improve the surface quality of CFRP. In turn, the use of diamond grinding heads with too small or too large particles may reduce surface quality. Grinding quality changes with the grinding direction. In the grinding direction between 0° and 90°, the surface roughness increases with the angle (but drops at 60°), and The same trend is observed in the grinding direction between 90° and 150°, whereby the surface roughness increases with the angle (but drops at 120°). The surface quality of CFRP is thereby improved after grinding in the direction of 0°, 60°, 120° and 180°. Furthermore, the fiber pull-out occurs, when the feed direction and fiber orientation are aligned. Finally, the low-frequency vibration easily causes fiber pull-out defects.

The Biology and Physiology of Malus Hupehensis of the Apogamic Plant Resource

Hong-Qiang Yang,Kai-Xuan Duan,Wei Zhang 한국원예학회 2006 한국원예학회 기타간행물 Vol.- No.-

Preparation of Thermosensitive Hydrogels by means of Tandem Physical and Chemical Crosslinking

Hong-Liang Wei,Kai Yao,Zhe Yang,Hui-Juan Chu,Jing Zhu,Cun-Cai Ma,Zi-Xuan Zhao 한국고분자학회 2011 Macromolecular Research Vol.19 No.3

The tandem physical and chemical crosslinking was used to prepare injectable hydrogels. First, the terpolymers with diene groups were synthesized by the free radical copolymerization of N-isopropylacrylamide (NIPA), N,N-dimethylacrylamide (DMA) and furfuryl methacrylate (FM). Second, dienophile-functionalized terpolymers were obtained from the terpolymers of NIPA, DMA, and 2-hydroxyethyl methacrylate (HEMA) and Nmaleoyl alanine (AMI) by a coupling reaction under N,N'-dicyclohexylcarbodiimide (DCC). When the screened diene-functionalized terpolymer and dienophile-functionalized terpolymer were dissolved separately in water and mixed, physically cross-linked hydrogels formed rapidly within 10 s at 37 ℃. Subsequently, the physically crosslinked hydrogels could change gradually into chemically cross-linked hydrogels by a Diels-Alder reaction and the mechanical strength of the hydrogels could be improved. The swelling behavior study suggests that the hydrogels possess thermosensitivity and good reproducibility at different temperatures. The strategy described, i.e. incorporating the advantages of physically crosslinked hydrogels and chemically crosslinked hydrogels, has potential applications in the preparation of injectable hydrogels.

Chaotic ant colony algorithm‑based frequency‑optimized random switching frequency SVPWM control strategy

Siyan Zhang,Xudong Wang,Kai Zhou,Xuan Shao,Jinfeng Liu 전력전자학회 2023 JOURNAL OF POWER ELECTRONICS Vol.23 No.11

To solve the problem where the space vector pulse width modulation (SVPWM) of a three-phase inverter produces large harmonic components near the switching frequency (fs) and its doubling frequency, a frequency-optimized random switching frequency SVPWM (FORSF-SVPWM) control strategy is proposed in this paper. In this strategy, the basic principle of the chaotic ant colony algorithm in path optimization is used to determine the optimized scheme of the switching frequency distribution in the FORSF-SVPWM. Research shows that the frequency sample formed by the sigmoid function curve in the switching frequency range can cause the energy that was originally concentrated on the switching frequency and its doubling frequency to be more evenly distributed in the whole frequency range. Moreover, the amplitude of each harmonic wave is shown to be suppressed. The proposed strategy reduces the high-frequency noise and conducted electromagnetic interference (EMI) existing in power switching circuits. Thus, this strategy is obviously better than the traditional random switching frequency SVPWM (RSF-SVPWM) algorithm with its approximately uniform frequency distribution. Simulation and experimental results show that this strategy can work well in the hardware platform of a three-phase inverter without changing the topology of the main circuit of the system. In addition, this strategy is easy to implement.

Establishment of a novel myocarditis mouse model based on cyclosporine A

Zhao Tian Hao,Jiang Yi Xuan,Chen Kai Qin,Qiu Dan,Xu Yan Zhe,Ye Chun,Ren Ting,Zhang Bo,Dai Bin,Hu Jue,Lu Jun,Zhou Fang Liang,Xiao Rong,Lu Fang Guo,Wei Ke 한국유전학회 2022 Genes & Genomics Vol.44 No.12

Background: Myocarditis is a myocardial injury that can easily cause adolescent death. Traditional research models of animal invasion with viral components, lipopolysaccharide (LPS) or porcine myocardial myosin, among others, have the shortcomings of potential biological safety hazards and high animal mortality. Objective: To explore the construction of a novel myocarditis model with cyclosporine A and the potential genes and pathways associated with it. Methods: BALB/c mice were used in this study, and cyclosporin A and LPS were injected into the peritoneal cavity of mice. The successful establishment of the model was assessed by detecting serum myocardial injury markers and inflammatory factors levels, HE, IHC staining, and RT-qPCR methods. Key genes were obtained using the GSE35182 dataset from the GEO database and validated with the RT-qPCR method. Results: We found that a large number of inflammatory cells infiltrated the myocardium of mice in each group of Cyclosporin A constructed model, while the expression of inflammatory factor indicators was increased, and this model has the characteristics of high degree of local inflammation in myocardial tissue, low mortality, and safe and non-toxic treatment. Using GSE35182 data, we selected 18 Hub genes and validated Hub genes in myocardial tissue with RT-qPCR and found that multiple signaling pathways such as Toll-likereceptor signaling pathway(TLRs), Rap1 signal pathway(Rap1), and Chemokine signaling pathway may be involved in the development of myocarditis. Conclusion: Cyclosporin A can construct a new myocarditis model, and TLRs, Chemokines and Rap1 signaling pathways may be the core pathways of myocarditis.

Isolation and Expression Analysis of a GDSL-Like Lipase Gene from Brassica napus L.

( Hua Ling ),( Jing Ya Zhao ),( Kai Jing Zuo ),( Cheng Xiang Qiu ),( Hong Yan Yao ),( Jie Qin ),( Xiao Fen Sun ),( Ke Xuan Tang ) 생화학분자생물학회 2006 BMB Reports Vol.39 No.3

Apatinib Combined with Local Irradiation Leads to Systemic Tumor Control via Reversal of Immunosuppressive Tumor Microenvironment in Lung Cancer

Li-jun Liang,Chen-xi Hu,Yi-xuan Wen,Xiao-wei Geng,Ting Chen,Guo-qing Gu,Lei Wang,You-you Xia,Yong Liu,Jia-yan Fei,Jie Dong,Feng-hua Zhao,Yiliyar Ahongjiang,Kai-yuan Hui,Xiao-dong Jiang 대한암학회 2020 Cancer Research and Treatment Vol.52 No.2

Purpose This study aimed to investigate the potential systemic antitumor effects of stereotactic ablative radiotherapy (SABR) and apatinib (a novel vascular endothelial growth factor receptor 2 inhibitor) via reversing the immunosuppressive tumor microenvironment for lung carcinoma. Materials and Methods Lewis lung cancer cells were injected into C57BL/6 mice in the left hindlimb (primary tumor; irradiated) and in the right flank (secondary tumor; nonirradiated). When both tumors grew to the touchable size, mice were randomly divided into eight treatment groups. These groups received normal saline or three distinct doses of apatinib (50 mg/kg, 150 mg/kg, and 200 mg/kg) daily for 7 days, in combination with a single dose of 15 Gy radiotherapy or not to the primary tumor. The further tumor growth/regression of mice were followed and observed. Results For the single 15 Gy modality, tumor growth delay could only be observed at the primary tumor. When combining SABR and apatinib 200 mg/kg, significant retardation of both primary and secondary tumor growth could be observed, indicated an abscopal effect was induced. Mechanism analysis suggested that programmed death-ligand 1 expression increased with SABR was counteract by additional apatinib therapy. Furthermore, when apatinib was combined with SABR, the composition of immune cells could be changed. More importantly, this two-pronged approach evoked tumor antigen–specific immune responses and the mice were resistant to another tumor rechallenge, finally, long-term survival was improved. Conclusion Our results suggested that the tumor microenvironment could be managed with apatinib, which was effective in eliciting an abscopal effect induced by SABR.

Purification and Structural Analysis of Surfactin Produced by Endophytic Bacillus subtilis EBS05 and its Antagonistic Activity Against Rhizoctonia cerealis

Wen, Cai-Yi,Yin, Zhi-Gang,Wang, Kai-Xuan,Chen, Jian-Guang,Shen, Shun-Shan The Korean Society of Plant Pathology 2011 Plant Pathology Journal Vol.27 No.4

Bacillus subtilis EBS05, an endophytic bacteria strain isolated from a medicinal plant Cinnamomum camphor, can produce antagonistic compounds that effectively inhibit plant pathogenic fungi. The greenhouse experiments showed that wheat sharp eyespot disease (WSED) was reduced by 91.2%, 88.2% and 43.0% after the treatment with fermentation broth, bacteria-free filter and a fungicide fludioxonil, respectively. The culture broth of strain EBS05 can more effectively control WSED than can fludioxonil. The fermentation broth and bacteria-free filter ability to suppress WSED was not significantly different, suggesting that an active secreted substance played a major role in controlling WSED. Separation and purification of the active compounds was carried out by serial processes, including hydrochloric acid (pH 2.0) treatment, methanol extraction and Sephadex LH-20 column chromatography, silica gel column chromatography and reverse-phase high-pressure liquid chromatography (HPLC), respectively. The purified compounds, one of active peaks in the HPLC spectrum, were obtained from the collection. Analysis of the chemical structures by time-of-flight mass spectrometry (TOF-MS) and electrospray ionization mass spectrometry/mass spectrometry (ESI-MS/MS) showed that the active substances produced by the endophytic bacteria EBS05 are mixture of the ${\beta}$-hydroxy-C12~C15-$Leu^7$ surfactin A isomers with 1035.65 Da, 1021.64 Da, 1007.63 Da and 993.65 Da molecular weights, respectively.