중국 여성소비자의 라이프스타일에 따른 의복소비가치, 한국 패션브랜드에 대한 태도 및 충성도

허원원 ( Xu Yuan-yuan ),황진숙 ( Hwang Jin-sook ) 한국디자인트렌드학회 2011 한국디자인포럼 Vol.30 No.-

중국은 급속한 경제 성장으로 세계의 주목을 받고 있다. 생활수준 개선으로 중국 소비자들의 삶의 질은 높아지고 있으며 그에 따라 소비자들의 라이프스타일도 변화하고 있다. 본 연구는 중국 북경에 거주하는 20-30대 여성 소비자들을 대상으로 라이프스타일에 따라 집단을 세분화하고 집단 간 의복 소비가치와 한국 패션 브랜드에 대한 태도 및 충성도의 차이를 알아보고자 하였다. 연구결과 라이프스타일 집단은 `브랜드/알뜰계획 집단`, `패션 문화개방/디지털 집단`, `소극적 라이프스타일 집단`의 3집단으로 분류되었고, 집단 간 의복 소비가치, 한국 패션 브랜드에 대한 태도, 충성도 및 정보원에서 유의한 차이가 나타났다. China is attracting the world`s attention with its rapid economic growth. The quality of life is rising universally by the improvement of living level, and the lifestyle is changing as well. The purpose of this research was to segment Chinese female consumers by lifestyles, and to investigate the differences among the segmented groups in regard to clothing consumption value and attitudes toward Korean fashion brands. The subjects of the study were 20-30 years old women living in Beijing, China. The subjects were classified into three groups according to their lifestyles, which were brand/function-oriented group, fashion/ shopping group, and passive lifestyle group. The results showed that there were significant differences among the groups in regard to clothing consumption value, attitudes toward Korean fashion brands, brand loyalty, and information source.

An Efficient Method for Electron-Atom Scattering Using Ab-initio Calculations

Yuan Xu,Yonggang Yang,Liantuan Xiao,Suotang Jia 한국물리학회 2017 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.70 No.4

We present an efficient method based on ab-initio calculations to investigate electron-atom scatterings. Those calculations profit from methods implemented in standard quantum chemistry programs. The new approach is applied to electron-helium scattering. The results are compared with experimental and other theoretical references to demonstrate the efficiency of our method.

Volatilization of Nerolidol in Tea and Tea-soup

Yuan-Xu Shi,Ya-Ting Lu,Jie Lin,Xiao-Chang Wang 한국차학회 2015 한국차학회지 Vol.- No.S

Nerolidol is one of most important content in tea aroma, especially in Oolong tea. This experiment focuses on the impact of time and medium on nerolidol volatilization. The results of nerolidol volatilization with infusion time showed that the peak areas of nerolidol increased from 1 to 3 min, then decreased. The maximum peak area of nerolidol volatilization was 25630.78 at 3 min. Tea polyphenol had strong promotion impact on fragrant compound volatize, caffeine had limited impact on volatilization, while polysaccharide inhibited nerolidol volatilization.

Cutting force, tool wear and surface roughness in high-speed milling of high-strength steel with coated tools

Yuan Li,Guangming Zheng,Xu Zhang,Xiang Cheng,Xianhai Yang,Rufeng Xu 대한기계학회 2019 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.33 No.11

The TiAlN+TiN coated tool, AlTiN coated tool and TiN/TiCN/TiAlN multi-coated tool were chosen for the high-speed milling of AISI 4340. The resultant cutting force and tool wear of coated tools were reviewed. The influence of cutting parameters and coating materials on the machined surface roughness was studied. The smallest resultant cutting force was obtained by TiN/TiCN/TiAlN multicoated tool. The main wear mechanisms of coated tool were chipping, collapse, the chipping of coating, adhesive wear, abrasive wear and crater wear. The minimal flank wear width was obtained by TiN/TiCN/TiAlN multi-coated tool. Among the selected cutting parameters, the lower surface roughness R a of 0.08~0.32 μm was achieved by the TiN/TiCN/TiAlN multi-coated tool and TiAlN+TiN coated tool. This work was conducive to the selection of coated tools and the optimization of cutting parameters in high-speed milling of AISI 4340, as well as to the promotion of high-efficiency and high-quality machining of hard-to-cut material.

Study on Legal Governance Guarantee of Digital Economy Development in China

XU YUAN(徐媛),CHEN LIANG(陳亮) 동아대학교 법학연구소 2021 國際去來와 法 Vol.- No.32

Disruptive technological change has made human society leap over the era of agricultural and industrial economy and ushered in the era of digital economy. The development of digital economy has become a key force in the implementation of Chinas major national strategy, which is of great significance to the implementation of supply-side reform and innovation-driven development strategy. European and American countries are committed to improving the strategic policies and supporting legal systems for the development of digital economy. China should learn from the successful experience of Europe and the United States, speed up the construction of a modern economic system, enhance its core competitiveness, establish a legal protection system for the development of the digital economy, and create Chinas first-mover advantage in the digital economy. This research systematically sorts out the development status and trend of Chinas digital economy, points out the legal dilemma of the development of Chinas digital economy from the perspective of the actual analysis and the ought to be analyzed, and makes a detailed analysis of the European Union and the United States key laws, regulations and policy planning for the development of digital economy. Finally, this research puts forward the basic conception of legal guarantee for the development of Chinas digital economy from three aspects of concept, principle and system.

Multi-loop current control strategy based on predictive control for multiphase pulse power supplies

Yuan, Zhibao,Wen, Pingping,Xu, Haiping,Yuan, Zengquan The Korean Institute of Power Electronics 2021 JOURNAL OF POWER ELECTRONICS Vol.21 No.3

For high-power quasi-continuous laser drivers, the switched pulse power supply (PPS) is a promising technique due to its higher efficiency when compared with linear drivers. However, there are some digital control challenges with high precision, fast response and zero overshoot during the flat-top current stage. To promote the use of a switched PPS, this paper proposes a digital control strategy based on predictive current control under a multiphase PPS converter circuit. The key of the proposed control strategy is that predictive inner current control is only used for the master phase circuit. Meanwhile, the current sharing control is used for balancing the phase currents, and the setting outer current controller is used for keeping the whole converter control system stable and robust. Furthermore, to obtain fast and precise current tracking, a predictive average current control independent from the load values is derived. Moreover, a reducing gain method is applied to guarantee the stability of the inner current control. When compared with the conventional multiphase control, the proposed strategy possesses a faster dynamic response and a higher accuracy. In addition, it is more flexible under digital control implementation. A 360 W dual-interleaved PPS prototype is utilized for verifying the effectiveness of the proposed control strategy.

Amperometric Determination of Nitrite at Poly(Methylene Blue)-Modified Glassy Carbon Electrode

Xu, Guang-Ri,Xu, Guifang,Xu, Ming-Lu,Zhang, Zhengqing,Tian, Yuan,Choi, Han-Nim,Lee, Won-Yong Korean Chemical Society 2012 Bulletin of the Korean Chemical Society Vol.33 No.2

Electrochemical characteristics of nitrite ion were investigated at a poly(methylene blue)-modified glassy carbon electrode by cyclic voltammetry and differential pulse voltammetry. The poly(methylene blue)-modified glassy carbon electrode exhibited enhanced anodic signals for nitrite. The effects of key parameters on the detection of nitrite were evaluated at the modified electrode, such as pH, accumulation time, and scan rate. Under optimum condition, the chemically modified electrode can detect nitrite in the concentration range $2.0{\times}10^{-6}$ to $5.0{\times}10^{-4}$ M with the detection limit of $2.0{\times}10^{-6}$ M and a correlation coefficient of 0.999. The detection of nitrite using the chemically modified electrode was not affected by common ions such as $Na^+$, $K^+$, $Ca^{2+}$, $Cl^-$, $HPO_4^{2-}$ and $H_2PO_4^- $. The modified electrode showed good stability and reproducibility. The practical application of the present method was successfully applied to the determination of nitrite ion in cabbage samples.

Improvement of Anti-CD36 Antibody Detection via Monoclonal Antibody Immobilization of Platelet Antigens Assay by Using Selected Monoclonal Antibodies

Xu Xiuzhang,Chen Dawei,Ye Xin,Xia Wenjie,Shao Yuan,Deng Jing,Chen Yangkai,Ding Haoqiang,Liu Jing,Xu Yaori,Santoso Sentot,Fu Yongshui 대한진단검사의학회 2023 Annals of Laboratory Medicine Vol.43 No.1

Antibodies against human CD36 are responsible for several immune-mediated disorders. The detection of anti-CD36 antibodies using the standard monoclonal antibody (mAb) immobilization of platelet antigens (MAIPA) assay is hampered by a high frequency of false-negative results, most likely due to competitive inhibition of the mAb used as the capture antibody. We generated a panel of mouse mAbs against CD36 and seven hybridomas (GZ-3, GZ-13, GZ-70, GZ-143, GZ-413, GZ-507, and GZ-608), which were selected for MAIPA assays, as they reacted with mouse and human CD36. Fourteen anti-CD36 sera were assayed; all of which showed a positive reaction in a PakPlus (Immucor GTI Diagnostics, Inc., Waukesha, WI, USA) ELISA-based screening (optical density: 0.257–2.292). When the reference anti-CD36 mAb FA6-152 was used in the MAIPA assay, only 6/14 (42.9%) sera displayed a positive reaction. In contrast, anti-CD36 antibodies were detected in 13/14 (92.9%) sera when GZ-70 and GZ-608 mAbs were used. This significant improvement resulted in the identification of anti-CD36 antibodies by an antigen capture assay. Since patient’s platelets possibly carrying rare native antigens are used, this method will facilitate the identification of new platelet antibodies against CD36 that are involved in immune-mediated thrombocytopenia and other diseases, such as transfusion-related acute lung injury.

Arachidonic Acid 15-Lipoxygenase: Effects of Its Expression, Metabolites, and Genetic and Epigenetic Variations on Airway Inflammation

Xu Xu,Li Jingyun,Zhang Yuan,Zhang Luo 대한천식알레르기학회 2021 Allergy, Asthma & Immunology Research Vol.13 No.5

Arachidonic acid 15-lipoxygenase (ALOX15) is an enzyme that can oxidize polyunsaturated fatty acids. ALOX15 is strongly expressed in airway epithelial cells, where it catalyzes the conversion of arachidonic acid to 15-hydroxyeicosatetraenoic acid (15-HETE) involved in various airway inflammatory diseases. Interleukin (IL)-4 and IL-13 induce ALOX15 expression by activating Jak2 and Tyk2 kinases as well as signal transducers and activators of transcription (STATs) 1/3/5/6. ALOX15 up-regulation and subsequent association with phosphatidylethanolamine-binding protein 1 (PEBP1) activate the mitogen-activated extracellular signal-regulated kinase (MEK)-extracellular signal-regulated kinase (ERK) pathway, thus inducing eosinophil-mediated airway inflammation. In addition, ALOX15 plays a significant role in promoting the migration of immune cells, such as immature dendritic cells, activated T cells, and mast cells, and airway remodeling, including goblet cell differentiation. Genome-wide association studies have revealed multiple ALOX15 variants and their significant correlation with the risk of developing airway diseases. The epigenetic modifications of the ALOX15 gene, such as DNA methylation and histone modifications, have been shown to closely relate with airway inflammation. This review summarizes the role of ALOX15 in different phenotypes of asthma, chronic obstructive pulmonary disease, chronic rhinosinusitis, aspirin-exacerbated respiratory disease, and nasal polyps, suggesting new treatment strategies for these airway inflammatory diseases with complex etiology and poor treatment response.

Neoadjuvant Chemotherapy for Resectable Esophageal Carcinoma: A Meta-analysis of Randomized Clinical Trials

Xu, Xiao-Hua,Peng, Xue-Hong,Yu, Ping,Xu, Xiao-Yuan,Cai, Er-Hui,Guo, Pi,Li, Ke Asian Pacific Journal of Cancer Prevention 2012 Asian Pacific journal of cancer prevention Vol.13 No.1

Neoadjuvant chemotherapy for resectable esophageal carcinoma has been a focus of study, but no agreement has been reached on clinical randomized controlled trials and relevant systematic evaluation. The purpose of this study was to perform a meta-analysis on published randomized controlled trials (RCTs) that compared neoadjuvant chemotherapy and surgery with surgery alone for resectable esophageal carcinoma. Medline and manual searches was conducted in PubMed, ASCO (American Society of Clinical Oncology) meeting summary, Embase, the Cochrane Library (up to October 2010), Chinese Biomedical Literature Database, China National Knowledge Infrastructure, VIP Database, Wanfang Database. The selection contents were to identify all published and unpublished RCTs that compared neoadjuvant chemotherapy and surgery with surgery alone for resectable esophageal carcinoma. Sixteen RCTs which included 2,594 patients were selected. The risk ratio (RR) (95% confidence interval [CI]; P value), expressed as neoadjuvant chemotherapy and surgery versus surgery alone (treatment versus control), was 1.02 (0.95, 1.10; P=0.54) for 1-year survival, 1.29 (1.13, 1.47; P=0.0001) for 3-year survival, 1.31 (1.13, 1.51; P=0.0003) for 5-year survival, 1.00 (0.95, 1.04; P= 0.85) for rate of resection and 0.89 (0.64, 1.23; P=0.48) for operative mortality. The results showed that neoadjuvant chemotherapy for resectable esophageal carcinoma can raise the overall survival rate of patients with esophageal carcinoma, but it does not affect treatment-related mortality.