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Optimizations for Mobile MIMO Relay Molecular Communication via Diffusion with Network Coding
Zhen Cheng,Jie Sun,Jun Yan,Yuchun Tu 한국인터넷정보학회 2022 KSII Transactions on Internet and Information Syst Vol.16 No.4
We investigate mobile multiple-input multiple-output (MIMO) molecular communication via diffusion (MCvD) system which is consisted of two source nodes, two destination nodes and one relay node in the mobile three-dimensional channel. First, the combinations of decode-and-forward (DF) relaying protocol and network coding (NC) scheme are implemented at relay node. The adaptive thresholds at relay node and destination nodes can be obtained by maximum a posteriori (MAP) probability detection method. Then the mathematical expressions of the average bit error probability (BEP) of this mobile MIMO MCvD system based on DF and NC scheme are derived. Furthermore, in order to minimize the average BEP, we establish the optimization problem with optimization variables which include the ratio of the number of emitted molecules at two source nodes and the initial position of relay node. We put forward an iterative scheme based on block coordinate descent algorithm which can be used to solve the optimization problem and get optimal values of the optimization variables simultaneously. Finally, the numerical results reveal that the proposed iterative method has good convergence behavior. The average BEP performance of this system can be improved by performing the joint optimizations.
The Effects of Brand Experience on the Perceived Value of Customers in China and Korea
Zhen-Feng CHENG,Gyu-Bae KIM 국제융합경영학회 2021 융합경영연구 Vol.9 No.3
Purpose - This study has the purpose to investigate causal relationships among brand experience, perceived value and brand support behavior in both Chinese consumers and Korean consumers. Furthermore, this study examined the moderating effects of interaction with customers in the relationships between brand experience and perceived value. Besides, this study tried to analyze the difference between the Korean customers and the Chinese customers in the causal relationships between brand experience and perceived value. Research design, data and methodology - Three research questions about the causal relationships between variables were presented and examined empirically in this study. First research question is about relationships among brand experience, perceived value and brand support behavior. Second research questions is about the moderating role of interaction with customers. Third research question is about the differences in the causal relationships between China consumers and Korean consumers. A total of 377 samples who had visited theme parks in China and Korea were surveyed and the research questions were examined by SPSS and AMOS. Results - First, sensory experience, emotional experience, and cognitive experience have significant causal relationships with perceived value in Both Chinese and Korean consumers. Perceived value has a positive effect on brand support behavior and interaction with customer has a moderating effect between brand experience variables and perceived value in Both Chinese and Korean consumers. Second, The causal relationship between behavioral experience and perceived value is not significant in Both Chinese and Korean consumers. Third, there were significant differences in the effects of emotional experience and cognitive experience on perceived value between Chinese consumers and Korean consumers. Conclusions - First, managers of theme park industry should design experience programs considering various brand experience variables for both Chines consumers and Korean consumers. Second, it is necessary to raise the level of customer interaction between employees and customers. Third, to strengthen both emotional experience and cognitive experience is necessary for both experience marketing programs for Chinese tourists and the strategy to enter the Chinese market.
서비스 산업의 브랜드 체험, 고객의 지각된 가치, 브랜드 지지행동의 관계
Zhen-Feng Cheng,김규배 한국유통과학회 2019 유통과학연구 Vol.17 No.2
Purpose – The importance of customer experiences has been increasing in retail industry as wells as theme park industry. The purpose of this research is to investigate relationships among brand experience, customer perceived value and brand support behavior in theme park industry. Furthermore, we tried to examine the moderating effects of interaction with customers in the relationships between brand experience and customer perceived value. Besides, we provided some implications for not only the theme park industry but also other service industries such as retail industry. Research design, data, and methodology – The research model has nine hypotheses, and we examined them empirically in this study. Five hypotheses were about relationships among theme park brand experiences, customer perceived value, and brand support behavior. The other four hypotheses were about the moderating effects of customer interactions in the causal relationship between brand experiences and customer perceived value. A total of 167 samples who had visited the theme park were surveyed and the hypotheses were tested with the statistical package programs such as SPSS 21.0 and AMOS 21.0. Results – The results of this study are as follows. First, it was proved that theme park visitors' sensory experience, emotional experience, and cognitive experience have significant positive effects on perceived value, although the hypothesis about the causal relationship between behavioral experience and perceived value is not supported. Second, the customer perceived value has a positive effect on brand support behavior. Third, customer interaction has a positive moderating effect between brand experiences and perceived value, except for behavioral experience. Conclusions - Based on the results of this study, there can be following significances and implications from both theoretical and practical perspectives. First, we confirmed the importance of experiential marketing in other service industries such as retail industry as well as the theme park industry. The marketing managers in these industries need to design various experience programs considering the various characteristics of experiences such as sensory, emotional, and cognitive experiences. Second, it will be necessary for the theme park managers to encourage active participation of customers, and raise the level of interaction between employees and customers.
Cheng Xia,Rui-Tang Guo,Zhen-rui Zhang,Chen-yuan Fan,Yu-zhe Liu,Yu-cheng Lin,Chu-fan Li,Wei-Guo Pan 한국공업화학회 2023 Journal of Industrial and Engineering Chemistry Vol.128 No.-
Recently, the photocatalytic CO2 reduction technology is an effective solution to remit the energy crisis. Inorder to improve the photocatalytic performance, Z-scheme W18O49/NiAl-LDH composite catalysts wereprepared by hydrothermal method. Fortunately, the prepared catalysts revealed excellent photocatalyticperformance under the simulated sunlight, and CO and CH4 could be detected in the reduction products. WO/LDH-0.5 catalyst possessed the optimal activity, with CO and CH4 yield of 37.09 and 8.01 lmol g-1h1separately, which were 7.9 and 3.6 times that of NiAl-LDH monomer. In addition, W18O49 endowedW18O49/NiAl-LDH catalysts with photothermal effect, which raised the surface temperature andfacilitated the catalytic reaction. Meanwhile, the Z-scheme heterojunction composed of flower-likeNiAl-LDH and urchin-like W18O49 accelerated the separation of photoexcited carriers and enhanced theredox ability. Through a series of characterizations and investigations, this work is promising to breaknew ground for the design of photocatalysts with photothermal effect.
( Xiang Cheng ),( Jun Hua Li ),( Jie Deng ),( Zhen Zhen Li ),( Shu Yan Meng ),( Hua Yan Wang ) 생화학분자생물학회 (구 한국생화학분자생물학회) 2012 BMB Reports Vol.45 No.1
The present study aimed to investigate the function of translationally controlled tumor protein (TCTP) in the regulation of Oct4 in mouse embryonic carcinoma P19 cells and mouse J1 embryonic stem (ES) cells. The mRNA level of endogenous TCTP in somatic cells was 2-4 folds higher than that in pluripotent P19 and J1 ES cells. Overexpression of TCTP in mouse pluripotent cells not only reduced the level of Oct4 transcription, but also decreased the pluripotency of stem cells. The N-terminal end of TCTP (amino acids 1-60) played an important role in suppressing the Oct4 promoter. Moreover, overexpression of TCTP in P19 cells suppressed the Oct4 promoter activity in a dose- and a time-dependent manner. In addition, knockdown of TCTP by small interfering RNA increased the expression of Oct4. Our study indicates that TCTP downregulates the Oct4 expression by binding the Sf1 site of Oct4 promoter in mouse pluripotent cells. [BMB reports 2012; 45(1): 20-25]
Further Education for Asian University Sports: AUSF Education and Development Centre
( Hao Cheng ),( Pei Liu ),( Jian Wang ),( Tieli Yang ),( Jun Xie ),( Bingshu Zhong ),( Qing Song ),( Cheng Fave Seetow ),( Yuetong Yan ),( Zhen Shen ),( Yanqing Xue ),( Kunning Chen ) 한국체육학회 2015 국제스포츠과학 학술대회 Vol.2015 No.1