Research on soft sensing modeling method of gas turbine's difficult-to-measure parameters

Qiwei Cao,Shiyi Chen,Dongdong Zhang,Wenguo Xiang 대한기계학회 2022 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.36 No.8

During the operation of a gas turbine, there are many key parameters that are difficult to directly measure or to ensure measurement accuracy, which can only be measured by offline analysis methods. However, the data obtained by offline analysis has a large time lag, and it is difficult to realize real-time monitoring, control and optimization of gas turbines. In recent years, with the widespread application of data-driven methods, data-driven soft sensing technology has become a breakthrough method for online prediction of difficult-to-measure variables. Due to the time-varying nature of the gas turbine operation process, the predictive performance of the offline modeling method will inevitably degrade over time. Therefore, an adaptive soft-sensing multi-level modeling method based on the combination of the just in time learning and the ensemble learning is proposed in this paper. Taking compressor inlet air flow and turbine inlet temperature as examples, the research is carried out and verified by actual operating data. The results verify the effectiveness of the method.

THE GENETIC DIVERSITY OF CHINESE STURGEON (Acipenser sinensis) IN THREE STURGEON FARMS USING MICROSATELLITE MARKERS DEVELOPED BY ILLUMINA SEQUENCING

Shuhuan Zhang,Miaomiao Xin,Qiwei Wei,Dengqiang Wang,Chuangju Li,Huamei Yue 한국수산과학회 양식분과 2015 한국수산과학회 양식분과 학술대회 Vol.2015 No.5

중국 산동성(山東省) 유통산업의 경제적 파급효과 분석

( Pang Qiwei ),( Zhang Xindan ),배기형 ( Ki-hyung Bae ) 한국유통경영학회(구 한국유통정보학회) 2021 유통경영학회지 Vol.24 No.3

Purpose: The purpose of this study is to quantitatively analyze the economic impact of distribution industry in Shandong Province, China to improve the understanding of the distribution industry, and to acquire its economic characteristics. Improve the awareness of the distribution industry and put forward the corresponding suggestions to the future development of China Shandong Province distribution industry. Research design, data, and methodology: This study collects data from the wholesale and retail industry, transportation industry, and internet communication industry of the distribution industry in Shandong Province, China. Then, the I-O table analysis is conducted to analyze production induced coefficients, sensitivity and impact coefficients, income and tax induced coefficients, and the overall economic impact of the distribution industry. Results: The results indicate that the total column production inducement coefficient and the total row are 2.330 and 11.699, respectively. In addition, the sensitivity coefficient is 3.209 and the influence coefficient is 0.639, the income induction coefficient of the distribution industry is found to be 0.463, and the tax induction coefficient is 0.142. Moreover, the production inducement value is approximately 10 trillion RMB, which accounts for 7.5% of the total, and the value-added inducement amount is 5.47 trillion RMB, representing 20% of the total value-added induction. Finally, the amount of income induction is 2.6 trillion RMB, accounting for 22% of the total and the tax induction amount was 873 billion yuan, accounting for 30% of the total. Implications: The distribution industry should deepen its integration with modern Internet technology in order to pursue a new development model. Also, policy-makers are suggested to provide certain policy preferential treatment, improve relevant laws and regulations, and establish market standards. In doingso, it increases residents’ income as well as local fiscal revenue.

중국 소비자 지각된 가치가 고궁박물관 문화 창의 제품의 제품 태도와 구매 의도에 미치는 영향

장빈원(Zhang Binyuan),방기위(Pang Qiwei),위영매(Wei Yingmei),배기형(Ki-Hyung Bae) 한국콘텐츠학회 2021 한국콘텐츠학회논문지 Vol.21 No.8

본 연구의 목적은 고궁박물관 문화 창의 제품의 발전 측면에서 소비자 지각된 가치가 제품 태도와 소비자구매 의도에 미치는 영향을 검증하여 연구결과를 기초로 제품의 측면에서 발전전략을 제공하는데 있다. 이를 위해 선행연구를 바탕으로 실증분석을 실시하였다. 설문 조사는 최근에 구매한 경험이 있는 소비자들을 대상으로 305개의 유효한 설문지를 수집하였으며 분석결과는 다음과 같다. 소비자의 지각된 가치 3가지 변수가 제품 태도에 모두 유의한 정(+)의 영향을 미치며, 지각된 문화교육 가치가 소비자의 구매의도에 유의한 영향을 미치지 않지만, 다른 변수들이 소비자의 구매 의도에 모두 유의한 정(+)의 영향을 미치는 것으로 나타났다. 또한, 소비자의 제품 태도가 구매 의도에 긍정적인 영향을 미치는 것으로 검증되었으며, 소비자의 지각된 가치중의 지각된 기능 가치, 지각된 오락 가치와 구매 의도 사이에 제품 태도의 부분 매개 효과가 있는 것으로 나타났다. 연구결과에 따라 문화 창의 제품은 문화적 정체성을 유지하면서 유쾌함과 편안함을 최대한 끌어올리는 방법을 고려하여 합리적인 가격과 일상적으로 사용하는 기능적 가치도 풍부해야 한다. 또한 고궁 문화창의 제품에 담긴 문화 지식에 대해서는 해석과 설명을 제공할 필요가 있다. The Palace Museum Cultural Creative Products on Attitude and Purchasing Intention. Online surveys were conducted on consumers who had consumed Cultural and Creative Products of the Palace Museum in the past. There were 305 valid questionnaires empirical survey was analyzed. The results of the study are as follows. First, it was found that all three variables of Consumer Perceived Value had a significant positive effect on product Attitude. Second, among the three variables of Consumer Perceived Value, the Cultural Educational Value did not significantly affect the onsumer urchasing ntention, but other variables had a significant positive effect on the Consumer Purchasing Intention. Third, it was verified that Attitude has a positive effect on Purchasing Intention. Fourth, it was found that there was a partial mediating effect of the Attitude between the Perceived Value and the Consumer Purchasing Intention. According to the research results, while maintaining the cultural identity of cultural and creative products, it is necessary to adopt reasonable methods to maximize the sense of enjoyment and comfort, enriching the daily use functions and rationalizing the price standards.

중국 인터넷 동영상 특성이 소비자 구독 만족도와 지속구독의도에 미치는 영향

짱신단(Zhang XinDan),왕루(Wang Lu),방기위(Pang QiWei),배기형(Ki-Hyung Bae) 한국콘텐츠학회 2021 한국콘텐츠학회논문지 Vol.21 No.12

본 연구의 목적은 중국 인터넷 동영상 특성이 사용자의 구독 만족도와 지속구독의도에 미치는 영향을 검증하는데 있다. 이를 위해 본 연구는 2021년 4월 16일부터 5월 16일까지 한 달 동안 구독한 경험이 있는 고객을 대상으로 온라인과 설문 조사를 실시하여 총338부 설문지에 수집하여 이에 대한 불성실한 응답과 구독하지 않은 응답 55부를 제외하고 총283부를 사용하여 실증분석을 실시하였다. 분석 결과는 다음과 같다. 첫째, 본 연구의 가설검증을 실시하기 전에 측정개념에 대한 타당성과 신뢰성 분석결과 인터넷 동영상 특성은 정확성, 사회적 영향, 서비스 품질, 콘텐츠 다양성, 정보성, 오락성 등 6개 요인으로 나타났다. 둘째, 인터넷 동영상의 특성 6가지 요인 중 정확성, 사회적 영향, 서비스 품질, 정보성이 구독 만족도의 유의한 정(+)영향을 미친 것이다. 셋째, 인터넷 동영상 특성 중의 콘텐츠 다양성과 오락성이 제외하고 나머지 4가지 요인들이 소비자의 지속구독의도에 긍정적이 영향을 미친 것으로 나타났다. 넷째, 구독만족도가 지속구독의도에 긍정적이 영향을 미친 것으로 검증하였다. 다섯째, 인터넷 동영상의 특성 및 지속구독의도 간의 구독만족도의 매개효과가 있다는 것으로 판단하였다. The purpose of this paper is to verify the influence of the characteristics of Chinese online video on users subscription satisfaction and continuous subscription intention. For this purpose, this paper conducted online and offline questionnaire for customers who had subscription experiences within one month from April 16 to May 16, 2021. A total of 338 questionnaires were collected, except for 55 dishonest responses and non-subscription responses. A total of 283 copies were used for empirical analysis. The analysis results are as follows. First, before implementing the hypothesis verification of this paper, the results of analyzing the rationality and reliability of the measurement concept show six factors of online video characteristics, such as accuracy, social impact, service quality, content diversity, information, and entertainment. Second, among the six factors of the characteristics of online video, accuracy, social influence, service quality, and information have a positive (+) impact on subscription satisfaction. Third, in addition to the content diversity and entertainment in the characteristics of online video, the other four factors have a positive impact on consumers continuous subscription intention. Fourth, subscription satisfaction has a positive impact on continuous subscription intention. Fifth, there is a media effect of subscription satisfaction between the characteristics of online video and the intention of continuous subscription.

THE IMPACTS OF THE FIRST DAM IN THE YANGTZE MAINSTEM ON THE STURGEONS AND PADDLEFISH IN THE YANGTZE RIVER

Hui Zhang,Qiwei Wei,Hao Du,Jinming Wu,Chengyou Wang 한국수산과학회 양식분과 2015 한국수산과학회 양식분과 학술대회 Vol.2015 No.5

INTERRUPTIONS OF NATURAL SPAWNING OF CHINESE STURGEON

Jinming Wu,Qiwei Wei,Hao Du,Hui Zhang,Chengyou Wang 한국수산과학회 양식분과 2015 한국수산과학회 양식분과 학술대회 Vol.2015 No.5

디지털 문화콘텐츠의 고객만족도 및 구매의도에 영향을 미치는 요인들에 관한 연구

왕루(Wang Lu),짱신단(Zhang Xindan),방기위(Pang Qiwei),배기형(Ki-Hyung Bae) 한국콘텐츠학회 2021 한국콘텐츠학회논문지 Vol.21 No.9

본 연구는 중국 소비자들을 대상으로 디지털 문화콘텐츠의 특성, 지각된 가치와 위험이 고객만족도 및 구매의도에 미치는 영향을 분석하여 향후 디지털 문화콘텐츠 발전에 일조하는데 있다. 온라인 설문조사를 통해 총 328부 설문지를 수집하여 실증분석을 실시하였다. 연구의 분석 결과는 다음과 같다. 첫째, 디지털 문화콘텐츠의 특성인 창작성을 제외하여 오락성과 상호작용성은 고객만족도와 구매의도에 모두 유의한 정(+)의 영향을 미친다. 둘째, 지각된 가치는 고객만족도와 구매의도에 유의한 정(+)의 영향을 미치는 반면에 지각된 위험은 고객만족도와 구매의도에 영향을 미치지 않는다. 셋째, 오락성, 상호작용성, 지각된 가치 3가지 요인과 구매의도 간에 고객만족도는 부분 매개효과를 미친다. 따라서 디지털문화콘텐츠의 발전을 촉진하기 위해 내용 오락성, 내용 생산자 및 서비스 제공자 간의 의사소통 개선, 그리고 고객의 소비과정 중에서 실제 느끼는 효용 및 가치를 높임을 통해 만족도를 향상시켜서 구매행동을 추진하게 되는 것이다. The purpose of this study is to examine the effects of digital cultural contents characteristics, perceived values and perceived risks on customer satisfaction and purchase intentions for Chinese consumers, and contribute to the development of digital cultural contents. In addition, a total of 328 valid samples were obtained through an online survey and empirical analysis was conducted. The analysis results of the study are as follows. First, except for creativity, which are characteristics of digital cultural contexts, entertainment and interactivity also have a significantly positive effect on both customer satisfaction and purchase intention. Second, perceived value has a significant positive effect on customer satisfaction and purchase intention, whereas perceived risk does not have this significant effect. Third, customer satisfaction has a partial mediating effect between the three factors(entertainment, interactivity, perceived value) and purchase intention. Therefore, to promote the development of digital cultural contents, we could promote consumers purchase behavior by improving satisfaction through content entertainment, communication between content producers and service providers, and unity and value that customers actually feel during the consumption process.

Adsorption behavior of α-tocopheryl succinate and α-tocopheryl polyethylene glycol succinate onto weakly basic anion exchange resins

Liyun Kong,Zhiguo Zhang,Huabin Xing,Qiwei Yang,Baogen Su,Zongbi Bao,Yiwen Yang,Qilong Ren 한국화학공학회 2015 Korean Journal of Chemical Engineering Vol.32 No.3

Polyethylene glycol (PEG) esters are important, nontoxic and biodegradable non-ionic surfactants. A keyprocedure in producing PEG esters is their separation from unreacted or excess acids. We propose an adsorptionmethod using the weakly basic anion exchange resins for the separation of organic acids and PEG esters for the firsttime. With α-tocopheryl polyethylene glycol succinate (TPGS) and α-tocopheryl succinate (α-TS) as the examples ofPEG ester and organic acid, respectively, single-component equilibrium experiments revealed the great potential of thismethod. Studies on the adsorption equilibrium, thermodynamics and kinetics of α-TS onto a weakly basic anion exchangeresin were also carried out. This research is not only important for the production of TPGS, but also instructivefor the separation of other PEG-esters from the reaction mixtures.

Relationship between Risk Perception, Satisfaction and Behavioral Intention among Customers of Trampoline Theme Park

( Ye Yuan ),( Xiangbai Zhang ),( Zhaohui Han ),( Jingying Lin ),( Qiwei Yang ) 아시아스포츠융합과학회 2022 Asia Pacific Journal of Applied Sport Sciences Vol.3 No.2

PURPOSE The main objective of this study was to validate the structural equation model of customer risk perception, satisfaction, and behavioral intention at Shenyang trampoline theme park. METHOD Study subjects included participants at six trampoline subject parks in Shenyang City. In this study, 312 questionnaires were distributed, 31 invalid questionnaires were removed for reasons such as being incomplete or incorrect. A total of 281 questionnaires were collected and used for analyses performed using SPSS 2.4 and Amos for hypothesis testing. Collected data was analyzed by descriptive statistics, exploratory factor analysis, confirmatory factor analysis, and structural equation modeling methods. RESULT Study results found (1) risk prevention had a direct effect on revisit intention and recommendation intention, and (2) the relationship between risk prevention and behavioral intention was moderated by satisfaction. CONCLUSION These findings confirm the importance of risk prevention, satisfaction and behavioral intentions in the recreational sport industry, which relevant management organizers should focus on and make practical efforts from multiple foundational aspects such as facilities, management, funding, It is expected that this study will contribute to the development of sport leisure industry. At the same time, this study also has limitations. Firstly, the study sample was only from Shenyang City and may not be representative of the rest of China. Samples could be collected in more regions in the future to improve the validity of the model. Secondly, only satisfaction was used as a mediator, and it is suggested that other variables could be added as mediating variables through questionnaires and a SPSS analysis to better explore the relationship between risk prevention, satisfaction, and behavioral intentions.