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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.
( Jianpo Li ),( Qiwei Wang ) 한국정보처리학회 2021 Journal of information processing systems Vol.17 No.2
The unbalance between system ergodic sum rate and high fairness is one of the key issues affecting the performance of non-orthogonal multiple access (NOMA) system. To solve the problem, this paper proposes a power allocation algorithm to realize the ergodic sum rate maximization of NOMA system. The scheme is mainly achieved by the construction algorithm of fair model based on α fair utility function and the optimal solution algorithm based on the interior point method of penalty function. Aiming at the construction of fair model, the fair target is added to the traditional power allocation model to set the reasonable target function. Simultaneously, the problem of ergodic sum rate and fairness in power allocation is weighed by adjusting the value of α. Aiming at the optimal solution algorithm, the interior point method of penalty function is used to transform the fair objective function with unequal constraints into the unconstrained problem in the feasible domain. Then the optimal solution of the original constrained optimization problem is gradually approximated within the feasible domain. The simulation results show that, compared with NOMA and time division multiple address (TDMA) schemes, the proposed method has larger ergodic sum rate and lower Fairness Index (FI) values.
( Jianpo Li ),( Qiwei Wang ) 한국정보처리학회 2021 Journal of information processing systems Vol.17 No.5
In the non-orthogonal multiple access (NOMA) system, multiple user signals on the single carrier are superimposed in a non-orthogonal manner, which results in the interference between non-orthogonal users and noise interference in the channel. To solve this problem, an improved algorithm combining regularized zero-forcing (RZF) precoding with minimum mean square error-serial interference cancellation (MMSE-SIC) detection is proposed. The algorithm uses RZF precoding combined with successive over-relaxation (SOR) method at the base station to preprocess the source signal, which can balance the effects of non-orthogonal inter-user interference and noise interference, and generate a precoded signal suitable for transmission in the channel. At the receiver, the MMSE-SIC detection algorithm is used to further eliminate the interference in the signal for the received superimposed signal, and reduce the calculation complexity through the QR decomposition of the matrix. The simulation results show that the proposed joint detection algorithm has good applicability to eliminate the interference of non-orthogonal users, and it has low complexity and fast convergence speed. Compared with other traditional method, the improved method has lower error rate under different signal-to-interference and noise ratio (SINR).
Xu, Chaoliang,Liu, Xiangbing,Wang, Hongke,Li, Yuanfei,Jia, Wenqing,Qian, Wangjie,Quan, Qiwei,Zhang, Huajian,Xue, Fei Korean Nuclear Society 2021 Nuclear Engineering and Technology Vol.53 No.8
The prediction of irradiation-induced transition temperature shift for RPV steels is an important method for long term operation of nuclear power plant. Based on the irradiation embrittlement data, an irradiation-induced transition temperature shift prediction model is developed with machine learning method XGBoost. Then the residual, standard deviation and predicted value vs. measured value analysis are conducted to analyze the accuracy of this model. At last, Cu content threshold and saturation values analysis, temperature dependence, Ni/Cu dependence and flux effect are given to verify the reliability. Those results show that the prediction model developed with XGBoost has high accuracy for predicting the irradiation embrittlement trend of RPV steel. The prediction results are consistent with the current understanding of RPV embrittlement mechanism.
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.
Haibo Jin,Heng Jiang,Qiwei Wang,Suohe Yang,Guohua Luo,Guangxiang He 한국화학공학회 2017 Korean Journal of Chemical Engineering Vol.34 No.2
A novel solid superbase 3%K/K2CO3 was prepared by loading metallic potassium on K2CO3. The optimized preparation conditions included a loading time of 1.5 h, loading temperature of 150 oC, loading amount of 3wt% and average carrier size of 120 μm. Under the optimum conditions, the conversion of propylene is about 60% with the selectivity of dimers 98.5% and the selectivity of 4MP1 86.3%. In addition, the superbase 3%K/K2CO3 has a base strength of H−≥37, and the concentration of basic sites of H−≥35 is approximately 0.3mmol·g−1 CAT. The microcrystal of metallic potassium was determined using X-ray diffraction (XRD) and differential scanning calorimetry (DSC). It was assumed that the oxygen species, which are adjacent to lattice defects, such as the crystalline corners, edges and vacancies of metallic potassium microcrystals, constituted the superbasic sites.