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Chen Yu Tong 한국콘텐츠학회 2021 ICCC International Digital Design Invitation Exhib Vol.2021 No.8

전시참가업체의 관계편익이 전시회 만족과 충성도에 미치는 영향 - 전환비용의 매개효과를 중심으로 -

진우동 ( Yu Tong Chen ),소단단 ( Dan Dan Su ),김봉석 ( Bong Seok Kim ) (사)한국전시산업융합연구원 2014 한국과학예술융합학회 Vol.16 No.-

The purpose of this research is to analyze how relational benefit about exhibition influences exhibition participating company`s satisfactory level and participating company`s loyalty and how switching costs`s influence on the relation. The purpose of the analysis is to provide the long term strategy for developing competitive and profitable exhibition. As the verified result on the influential relationship among relational benefit, switching cost, satisfactory level and loyalty based on generated each factor shows (research hypothesis 1~6): psychological benefit and economical benefit has influence on satisfactory level and loyalty, economical benefit has noticeable influence on switching cost, satisfactory level has noticeable influence on loyalty, and switching cost has noticeable influence on loyalty. Since the economical benefit and switching cost have showed direct or indirect influence on loyalty and switching cost, it would be safe to assume switching cost is acting as mediation between economical benefit and loyalty. Switching cost is mediation between satisfactory level and loyalty; satisfactory level is mediation between psychological benefit, and satisfactory level is acting as mediation between loyalty and economical benefit. This research has established the ultimate purpose why exhibition sponsor must manage the relational benefit. Since it is confirmed that exhibition participating companies override the relational benefit, relational customer segmentation is possible through service provided by participating companies.

Bacterial Community Structure and Function Shift in Rhizosphere Soil of Tobacco Plants Infected by Meloidogyne incognita

Wenjie Tong(Wenjie Tong),Junying Li(Junying Li),Wenfeng Cong(Wenfeng Cong),Cuiping Zhang(Cuiping Zhang),Zhaoli Xu(Zhaoli Xu),Xiaolong Chen(Xiaolong Chen),Min Yang(Min Yang),Jiani Liu(Jiani Liu),Lei Yu 한국식물병리학회 2022 Plant Pathology Journal Vol.38 No.6

Root-knot nematode disease is a widespread and catastrophic disease of tobacco. However, little is known about the relationship between rhizosphere bacterial community and root-knot nematode disease. This study used 16S rRNA gene sequencing and PICRUSt to assess bacterial community structure and function changes in rhizosphere soil from Meloidogyne incognita-infected tobacco plants. We studied the rhizosphere bacterial community structure of M. incognita-infected and uninfected tobacco plants through a paired comparison design in two regions of tobacco planting area, Yuxi and Jiuxiang of Yunnan Province, southwest China. According to the findings, M. incognita infection can alter the bacterial population in the soil. Uninfested soil has more operational taxonomic unit numbers and richness than infested soil. Principal Coordinate Analysis revealed clear separations between bacterial communities from infested and uninfested soil, indicating that different infection conditions resulted in significantly different bacterial community structures in soils. Firmicutes was prevalent in infested soil, but Chloroflexi and Acidobacteria were prevalent in uninfested soil. Sphingomonas, Streptomyces, and Bradyrhizobium were the dominant bacteria genera, and their abundance were higher in infested soil. By PICRUSt analysis, some metabolism-related functions and signal transduction functions of the rhizosphere bacterial community in the M. incognita infection-tobacco plants had a higher relative abundance than those uninfected. As a result, rhizosphere soils from tobacco plants infected with M. incognita showed considerable bacterial community structure and function alterations.

전시참가업체의 관계편익이 전시회 만족과 충성도에 미치는 영향

진우동(Chen, Yu Tong),소단단(Su, Dan Dan),김봉석(Kim, Bong Seok) 한국전시산업융합연구원 2014 한국과학예술융합학회 Vol.16 No.-

본 연구의 목적은 전시회에 대한 관계편익(relational benefits)이 전시회 참가업체의 만족과 참가업체의 충성도에 미치는 영향관계와 전환비용이 그 사이에 어떠한 효과를 미치는 지를 파악하여 장기적으로 경쟁력과 수익성을 갖춘 전시회로 발전시키기 위한 전략적 시사점을 제공하고자 한다. 도출된 각 요인들을 바탕으로 관계편익, 전환비용, 만족도, 충성도에 대한 영향관계를 검증(연구가설 1~6)한 결과, 관계편익 중 심리적 편익과 경제적 편익이 만족과 충성도에 유의한 영향을 미치는 것으로 나타났으며, 경제적 편익이 전환비용에 유의한 영향을 미치는 것으로 나타났다. 경제적 편익이 충성도에 직접영향을 나타냈고 전환비용이 그 사이에 직접효과 및 간접효과를 나타냈기 때문에 전환비용이 경제적 편익과 충성도의 사이에 매개효과가 있다고 할 수 있다. 마찬가지로 전환비용이 만족도과 충성도에 매개효과가 있다고 할 수 있으며 만족도도 심리적과 충성도 사이, 경제적 편익과 충성도 사이에 매개효과가 나타났다. 본 연구는 전시회 주최자가 관계편익을 관리해야 하는 궁극적인 목표를 규명하였다. 또한, 전시회 참가업체들이 관계편익을 지각한다는 것을 확인하였으므로, 전시회주최자들의 이러한 관계편익 지각은 참가업체에게 제공하는 서비스들을 통하여 관계고객 세분화(relationship customer segmentation)가 가능하다는 것을 의미한다. The purpose of this research is to analyze how relational benefit about exhibition influences exhibition participating company"s satisfactory level and participating company"s loyalty and how switching costs"s influence on the relation. The purpose of the analysis is to provide the long term strategy for developing competitive and profitable exhibition. As the verified result on the influential relationship among relational benefit, switching cost, satisfactory level and loyalty based on generated each factor shows (research hypothesis 1~6): psychological benefit and economical benefit has influence on satisfactory level and loyalty, economical benefit has noticeable influence on switching cost, satisfactory level has noticeable influence on loyalty, and switching cost has noticeable influence on loyalty. Since the economical benefit and switching cost have showed direct or indirect influence on loyalty and switching cost, it would be safe to assume switching cost is acting as mediation between economical benefit and loyalty. Switching cost is mediation between satisfactory level and loyalty; satisfactory level is mediation between psychological benefit, and satisfactory level is acting as mediation between loyalty and economical benefit. This research has established the ultimate purpose why exhibition sponsor must manage the relational benefit. Since it is confirmed that exhibition participating companies override the relational benefit, relational customer segmentation is possible through service provided by participating companies.

Combination of Tumor Volume and Epstein-Barr Virus DNA Improved Prognostic Stratification of Stage II Nasopharyngeal Carcinoma in the Intensity Modulated Radiotherapy Era: A Large-Scale Cohort Study

Qiu-Yan Chen,Shao-Yan Guo,Lin-Quan Tang,Tong-Yu Lu,Bo-Lin Chen,Qi-Yu Zhong,Meng-Sha Zou,Qing-Nan Tang,Wen-Hui Chen,Shan-Shan Guo,Li-Ting Liu,Yang Li,Ling Guo,Hao-Yuan Mo,Rui Sun,Dong-Hua Luo,Chong Zha 대한암학회 2018 Cancer Research and Treatment Vol.50 No.3

Purpose Little is known about combination of the circulating Epstein-Barr viral (EBV) DNA and tumor volume in prognosis of stage II nasopharyngeal carcinoma (NPC) patients in the intensity modulated radiotherapy (IMRT) era. We conducted this cohort study to evaluate the prognostic values of combining these two factors. Materials and Methods By Kaplan-Meier, we compare the differences of survival curves between 385 patients with different EBV DNA or tumor volume levels, or with the combination of two biomarkers mentioned above. Results Gross tumor volume of cervical lymph nodes (GTVnd, p < 0.001) and total tumor volume (GTVtotal, p < 0.001) were both closely related to pretreatment EBV DNA, while gross tumor volume of nasopharynx (GTVnx, p=0.047) was weakly related to EBV DNA. EBV DNA was significantly correlated with progress-free survival (PFS, p=0.005), locoregional-free survival (LRFS, p=0.039), and distant metastasis-free survival (DMFS, p=0.017), while GTVtotal, regardless of GTVnx and GTVnd, had a significant correlation with PFS and LRFS. The p-values of GTVtotal for PFS and LRFS were 0.008 and 0.001, respectively. According to GTVtotal and pretreatment EBV DNA level, patients were divided into a low-risk group (EBV DNA 0 copy/mL, GTVtotal < 30 cm3; EBV DNA 0 copy/mL, GTVtotal  30 cm3; or EBV DNA > 0 copy/mL, GTVtotal < 30 cm3) and a high-risk group (EBV DNA > 0 copy/mL, GTVtotal  30 cm3). When patients in the low-risk group were compared with those in the high-risk group, 3-year PFS (p=0.003), LRFS (p=0.010), and DMFS (p=0.031) rates were statistically significant. Conclusion Pretreatment plasma EBV DNA and tumor volume were both closely correlated with prognosis of stage II NPC patients in the IMRT era. Combination of EBV DNA and tumor volume can refine prognosis and indicate for clinical therapy.

Long-term continuously monocropped peanut significantly disturbed the balance of soil fungal communities

Chen Mingna,Zhang Jiancheng,Liu Hu,Wang Mian,Pan LiJuan,Chen Na,Wang Tong,Jing Yu,Chi Xiaoyuan,Du Binghai 한국미생물학회 2020 The journal of microbiology Vol.58 No.7

Balancing soil microbial diversity and abundance is critical to sustaining soil health, and understanding the dynamics of soil microbes in a monocropping system can help determine how continuous monocropping practices induce soil sickness mediated by microorganisms. This study used previously constructed gradient continuous monocropping plots and four varieties with different monocropping responses were investigated. The feedback responses of their soil fungal communities to short-term and long-term continuous monocropping were tracked using high-throughput sequencing techniques. The analyses indicated that soil samples from 1 and 2 year monocropped plots were grouped into one class, and samples from the 11 and 12 year plots were grouped into another, regardless of variety. At the species level, the F. solani, Fusarium oxysporum, Neocosmospora striata, Acrophialophora levis, Aspergillus niger, Aspergillus corrugatus, Thielavia hyrcaniae, Emericellopsis minima, and Scedosporium aurantiacum taxa showed significantly increased abundances in the long-term monocropping libraries compared to the short-term cropping libraries. In contrast, Talaromyces flavus, Talaromyces purpureogenus, Mortierella alpina, Paranamyces uniporus, and Volutella citrinella decreased in the long-term monocropping libraries compared to the shortterm libraries. This study, combined with our previous study, showed that fungal community structure was significantly affected by the length of the monocropping period, but peanut variety and growth stages were less important. The increase in pathogen abundances and the decrease in beneficial fungi abundances seem to be the main cause for the yield decline and poor growth of long-term monocultured peanut. Simplification of fungal community diversity could also contribute to peanut soil sickness under long-term monocropping. Additionally, the different responses of peanut varieties to monocropping may be related to variations in their microbial community structure.

Significance of Caveolin-1 Regulators in Pancreatic Cancer

Chen, Tao,Liu, Liang,Xu, Hua-Xiang,Wang, Wen-Quan,Wu, Chun-Tao,Yao, Wan-Tong,Yu, Xian-Jun Asian Pacific Journal of Cancer Prevention 2013 Asian Pacific journal of cancer prevention Vol.14 No.8

Caveolin-1 is a scaffold protein on the cell membrane. As the main component of caveolae, caveolin-1 is involved in many biological processes that include substance uptake and transmembrane signaling. Many of these processes and thus caveolin-1 contribute to cell transformation, tumorigenesis, and metastasis. Of particular interest are the dual rolesof tumor suppressor and oncogene that caveolin-1 appear to play in different malignancies, including pancreatic cancer. Therefore, analyzing caveolin-1 regulators and understanding their mechanisms of actionis key to identifying novel diagnostic and therapeutic tools for pancreatic cancer. This review details the mechanisms of action of caveolin-1 regulators and the potential significance for pancreatic cancer treatment.

Modeling and Analysis of an Avionic Battery Discharge Regulator

Chen, Qian,Yu, Haihong,Huang, Xiaoming,Lu, Yi,Qiu, Peng,Tong, Kai,Xuan, Jiazhuo,Xu, Feng,Xuan, Xiaohua,Huang, Weibo,Zhang, Yajing The Korean Institute of Power Electronics 2016 JOURNAL OF POWER ELECTRONICS Vol.16 No.3

The avionic battery discharge regulator (BDR) plays an important role in a power-conditioning unit. With its merits of high efficiency, stable transfer function, and continuous input and output currents, the non-isolated Weinberg converter (NIWC) is suitable for avionic BDR. An improved peak current control strategy is proposed to achieve high current-sharing accuracy. Current and voltage regulators are designed based on a small signal model of a three-module NIWC system. The system with the designed regulators operates stably under any condition and achieves excellent transient response and current-sharing accuracy.

Full-phase optimization of PDC bit cutter layout to reduce lateral force based on zoning method

Tong Cao,Kaian Yu,Xuyue Chen,Hongwu Zhu,Rui Zhang 대한기계학회 2021 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.35 No.3

Balancing lateral force is essential to reduce bit vibrations and prolong bit service life. During the process of cutting, the instantaneous cutting situation is governed by the previous blades cutting. This paper introduces a notion called “zoning method” based on the cutting geometry of bit-rock interface, which is dedicated to distinguishing different phases of cutting. Furthermore, a full-phase optimization model is developed to optimize cutter layout for minimizing the lateral force in each cutting phase, the NSGA-II is used to solve for the Paretooptimal solutions, and the fuzzy comprehensive evaluation method is used to select the optimal solution. Finally, a case study of full-phase optimization of PDC bit cutter layout is conducted to highlight the advantage of the zoning method. The case study results show that the lateral force is reduced significantly in each cutting phase by using zoning method, which can help to achieve the real lateral force balance of PDC bit.

Oncocytic Lipoadenoma: A Rare Case of Parotid Gland Tumor and Review of the Literature

Chen-lin Chi,Li-yu Lee,Tseng-tong Kuo 대한병리학회 2015 Journal of Pathology and Translational Medicine Vol.49 No.2

Oncocytic lipoadenoma is a rare tumor, with only 18 cases having been reported since the first in 1998. We encountered a case of oncocytic lipoadenoma presenting as a slowly growing parotid mass in a 71-year-old man. This tumor is characteristically comprised of a mixture of oncocytes and adipocytes. The present case is one of five reported cases of oncocytic lipoadenoma showing sebaceous differentiation. The results of immunohistochemical study with DOG1 antibody supported the origination of this tumor in the striated duct.