Who trusts medical crowdfunding? An empirical investigation in China

Qihua Liu,Li Wang,모건,Liyang Xu,Yiran Li 한국IT서비스학회 2020 한국IT서비스학회 학술대회 논문집 Vol.2020 No.-

Trust has been identified in previous studies as a key factor in determining online users’ participation in crowdfunding. Today, millions of people donate to medical crowdfunding projects via the Internet, but we know very little about human behavior related to which specific users of medical crowdfunding actually trust the projects they donate to. The purpose of this paper is to investigate whether gender, age, educational level and income level of online users affect their perception of trust in medical crowdfunding. Data for the study were collected through an online survey from 15 September to 15 November 2019 and samples of 393 medical crowdfunding donors from China were used and analyzed. Significant differences in levels of trusting behavior were found across gender, age, educational level and income level in medical crowdfunding. Our findings indicate that male, younger, lower educational level, higher income level funders are more inclined to trust the project of medical crowdfunding. The paper is one of the first to investigate the type of online donors to medical crowdfunding and their perception of trust in China. The findings provide important theoretical and practical implications.

Design and performance research of a mixed-flow submersible deep well pump

Qihua Zhang,Yuanhui Xu,Li Cao,Weidong Shi,Weigang Lu 한국유체기계학회 2016 International journal of fluid machinery and syste Vol.9 No.3

To meet the demand of higher handling capacity, a mixed-flow submersible deep well pump was designed and tested. The main hydraulic components are made of plastics, which is free of erosion, light-weight, and environment-friendly. To simplify plastic molding process, and to improve productivity, an axial-radial guide vane was proposed. To clarify its effect on the performance, a radial guide vane and a space guide vane are developed as well. By comparison, the efficiency of the pump equipped with the axial-radial guide vane is higher than the radial guide vane and is lower than the space guide vane, and its high efficiency range is wide. The static pressure recovery of the axial guide vane is a bit lower than the space guide vane, but it is much larger than the radial guide vane. Taking the cost and molding complexity into consideration, the axial-radial guide vane is much economic, promoting its popularity for the moderate and high specific speed submersible deep well pumps.

The Issue of Gender in Relation to Psychological Domestic Violence in China

Qihua Ye 숙명여자대학교 아시아여성연구원 2011 Asian Women Vol.27 No.4

This article reports the results of a survey that addresses some of limitations of the earlier research on domestic violence in China. It begins by presenting a literature review of the existing research of domestic violence in China, particularly psychological violence, referring to its background, development, achievement, research, and issues. Domestic violence has not been seen as a “family/private” matter but as a “public” matter in the recent decade in China. However, researching domestic violence, particularly psychological violence is new in China that the research may be limited in some aspects by a lack of experience. This survey therefore focuses on an exploration of psychological violence, specifically of these non-verbal behaviors “glaring”, “threatening with fists” and “stamping of foot” because Chinese husbands and wives are likely to use/experience them in conflict. “Glaring” and “threatening with fists” can be classified as “active” non-verbal behavior, namely that which potentially precedes a physical attack upon victims, while “stamping of foot” can be classified as “passive” non-verbal behavior, namely that which doesn’t threaten or precede a real attack upon victims. The results of this survey presented here provide a more specific overview of how couples actually behave in conflict. First, these three non-verbal behaviors are frequently and more or less differently used by husbands and wives in their conflicts. Second, there is no significant difference in such non-verbal behaviors between intellectual and non-intellectual families. Finally, there is a gender difference in such non-verbal behaviors occurring between husbands and wives in conflict. The results show that husbands are more likely to use “active” non-verbal behaviors, while wives are more likely to use “passive” non-verbal behavior. Thus such a difference may be seen as gender inequality. Gender inequality, closely linked to factors such as history, society and culture, may influence the choice of using non-verbal behavior by husbands and wives in conflict. This inequality represents power and superiority: men as dominant and women as subordinate historically and socially in the Chinese family. Importantly, this survey has not only offered something new in comparison with the previous studies, but also overcome the limitations of the author’s research in relation to research design and to the sample of non-intellectual respondents. This article suggests that all society should do more (particularly in the area of education) in order to eliminate domestic violence and gender inequality.

Tectonic Activity Study of Songping River Based on Historical Earthquakes and DEM

( Qihua Zhao ),( Xu Wang ),( Yu Xu ),( Juan Han ) 대한지질공학회 2019 대한지질공학회 학술발표회논문집 Vol.2019 No.2

The existence and activity of the Songping-River fault have been very controversial. It is of great theoretical and practical significance to find out the distribution and activity of the fault. In this paper, the activity of the Songping-River fault was analyzed based on historical earthquakes research and Digital elevation model. (1) Combining with the field geological investigation and Audio magnetotelluric method, the position of controversial Songping-River fault was determined. (2) According to the characteristics of outcrop, the mechanical property and movement property were analyzed. (3) The active intensity of the fault was discussed based on historical seismic data and geomorphic parameters analysis. The result shows that the Songping-River basin has a strong tectonic activity and the controlled fault distributes in three segments along the valley. Among them, the northwest one starts from Maishizhai and roughly extends to the vicinity of Huazilin along Songping River, tending to NE. The middle one is from Waerbao to the vicinity of the Bailazhai Village along Songping River. The southeast one is from the runoff of Gunshui ditch to the runoff of Songping River. Both the middle and the southeast segments tend to SW. All the three segments show the compression, while the outcrop of the southeast segment is characterized by left-lateral slip along with thrust component. In addition, the activity of the middle and the southeastern segments are stronger than that of the northwest segment. The research can provide reference and guidance for the prevention and control of earthquake geological disasters in the Songping-River basin and similar areas.

Accurate and Diverse Recommendations Based on Communities of Interest and Trustable Neighbors

Qihua Liu 보안공학연구지원센터 2015 International Journal of Security and Its Applicat Vol.9 No.3

Recommender systems are a critical component of e-commerce websites. Considering the users’ complete spectrum of interests, the limitation of current research on recommender systems lies in that they have only paid attention to improving the accuracy of recommendation algorithms while neglected the diversification of recommendations. In this paper, we integrated a user preference matching algorithm based on communities of interests and a diverse information recommendation algorithm based on trustable neighbors to develop a hybrid information recommendation model that allows for both accuracy and diversity. Results of experiment and evaluation indicated this model can increase the diversity of recommendations with only a minimal accuracy loss.

Employing Latent Dirichlet Allocation Model for Topic Extraction of Chinese Text

Qihua Liu 보안공학연구지원센터 2016 International Journal of Database Theory and Appli Vol.9 No.7

The hidden topic model of Chinese text, which possesses complicated semantics, is urgently needed, since China has occupied an increasingly significant role during the booming development of globalization over recent years. This paper details and elaborates the basic process of extracting latent Chinese topics by demonstrating a Chinese topic extraction schema based on Latent Dirichlet Allocation (LDA) model. Furthermore, the application was practiced in CCL, an authoritative Chinese corpus, to extract topics for its nine categories. With rigorous empirical analysis, extracting the LDA results has a considerably higher average precision rate as opposed to other three comparable Chinese topic extraction techniques; however the average recall rate is worse than KNN and almost the same with the PLSI model. Moreover, the recall rate and precision rate of LDA-CH is worse than LDA-EH. Therefore, the LDA model should be improved to adapt to the distinctive feature of Chinese words with the purpose of making it better for Chinese topic extraction.

The Study of China Vehicle Internet-Consumer Satisfaction Based on Bayesian Network

Ma QiHua,Zhang ChunYan,Zhang RuoPing 보안공학연구지원센터 2014 International Journal of Hybrid Information Techno Vol.7 No.6

With the high-speed development of China's Internet, e-commerce and network information communication make consumers on product quality of service have a more clear understanding. The competition of network sales market brought the traditional automobile sales and services the unprecedented pressure. This paper analysis the theories about customer satisfaction model both in China and abroad. All of them are expected difference theory as the core, evaluating the benefit of consumer satisfaction by perception the difference of perceived benefits and loss. On this basis, by the internet-questionnaire survey, the China internet-automobile customer satisfaction evaluation system of the bayesian model is established. From this, it can be obtained the main factors of the customer satisfaction and their influence degree.

Design and performance research of a mixed-flow submersible deep well pump

Zhang, Qihua,Xu, Yuanhui,Cao, Li,Shi, Weidong,Lu, Weigang Korean Society for Fluid machinery 2016 International journal of fluid machinery and syste Vol.9 No.3

To meet the demand of higher handling capacity, a mixed-flow submersible deep well pump was designed and tested. The main hydraulic components are made of plastics, which is free of erosion, light-weight, and environment-friendly. To simplify plastic molding process, and to improve productivity, an axial-radial guide vane was proposed. To clarify its effect on the performance, a radial guide vane and a space guide vane are developed as well. By comparison, the efficiency of the pump equipped with the axial-radial guide vane is higher than the radial guide vane and is lower than the space guide vane, and its high efficiency range is wide. The static pressure recovery of the axial guide vane is a bit lower than the space guide vane, but it is much larger than the radial guide vane. Taking the cost and molding complexity into consideration, the axial-radial guide vane is much economic, promoting its popularity for the moderate and high specific speed submersible deep well pumps.

관악산 상공에서의 유기 에어로졸 오염원 규명 연구

권수진,Qihua Hu,서재원,정지우,박창호,김화진 한국대기환경학회 2023 한국대기환경학회 학술대회논문집 Vol.2023 No.10

Characterizations of Lie higher and Lie triple derivations on triangular algebras

Jiankui Li,Qihua Shen 대한수학회 2012 대한수학회지 Vol.49 No.2

In this paper, we show that under certain conditions every Lie higher derivation and Lie triple derivation on a triangular algebra are proper, respectively. The main results are then applied to (block) upper triangular matrix algebras and nest algebras.