http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Yihua Zhang,Yuan Wang,Jiao Li,Baoxi Cai 보안공학연구지원센터 2015 International Journal of u- and e- Service, Scienc Vol.8 No.10
With Fujian Province as object of study, panel data from 1980 to 2013 is selected in this paper. Besides, VAR model is established. Co-integration test, Granger causality, impulse response function and variance decomposition are used for quantitative analysis on correlation between real estate development, financial expenditure and economic growth in Fujian Province. The research results show that long-term stable balance among real estate development, financial expenditure and economic growth in Fujian Province. Real estate development and financial expenditure are the Granger factors driving the growth of economic growth. Financial expenditure is the Granger reason for real estate development’s development. On this basis, the author proposes some policies and recommendations for macroeconomic regulation and control in Fujian Province.
Yihua Zhang,Yuan Wang,Lufen Guo,Baoxi Cai 보안공학연구지원센터 2016 International Journal of Database Theory and Appli Vol.9 No.7
Based on economic growth theory of modern economic theory, with Fujian Province as object of study, panel data from 1981 to 2013 is selected in this paper. Besides, VAR model is established. Co-integration test, Granger causality and impulse response function are used for quantitative analysis on correlation between consumption, investment, import, export and economic growth in Fujian Province. With Eviews8 software as analytical tool, the empirical study conducts analysis from the perspective of econometrics and tests the stationarity of unit root data; determines optimal lag intervals through VAR model analysis on different lag intervals; determines the existence of co-integration relationship of data through Johansen co-integration test; tests the causality of data with Granger causality test; conducts stationarity test by establishing VAR model; studies the variation trend of influence of consumption, investment and import and export on economic growth in the next ten years through impulse response. The author reveals long-term stable balance among consumption, investment, import, export and economic growth in Fujian Province as well as bidirectional causal relationship between consumption and economic growth. For a short term, household consumption is of relatively strong positive impact effect on economic gain, which is served as major impetus of economic growth. Domestic investment is of relatively obvious promotion for economic growth in a short term and of certain negative effect on economic growth in a long term. Import and export have significant function for promoting economic growth and profound influence in Fujian as coastal city. On this basis, the author proposes some policies and recommendations for macroeconomic regulation and control in Fujian Province.
MBTI 성격유형을 반영한 심층 신경망 기반 직무 추천 서비스
장예화(Yihua Zhang),이병현(Byunghyun Lee),정재호(Jaeho Jeong),김재경(Jaekyeong Kim) 한국인터넷전자상거래학회 2021 인터넷전자상거래연구 Vol.21 No.4
Recently, as the value of employment information services through which job seekers can obtain information has increased due to difficulties in employment, job portal sites provide job postings and job recommendations suitable for job seekers. Job portal sites that provide these services mainly recommend jobs to job seekers based on the competencies required for the job and do not consider the job seeker"s personality type. However, in several previous studies, it was confirmed that the personality type of job seekers had a significant influence on job satisfaction and performance. In other words, it can be said that personality type acts as an essential factor in job-seekers job selection. Therefore, in this study, a job recommendation methodology reflecting MBTI personality type was proposed to improve the service system provided by existing employment portal sites. For this purpose, we used resume data that includes information about job seekers" educational background, major, age, gender, self-introduction, and the company and job for which they are applying. A personality dictionary was constructed for each MBTI personality type. The MBTI personality type of each job seeker was derived by applying this to the self-introduction text of the resume data. And using the DNN model, a job recommendation system that reflects the personality type of job seekers was built. In addition, as a result of confirming the effectiveness of the methodology proposed in this study through the evaluation index, it was confirmed that the recommendation accuracy was higher when the MBTI personality type was included than when it was not included.
Shaoan Zhang,Yuanxing Li,Wenfeng Li,Zhenzhang Li,Minfan Qiu,Zhongfei Mu,Yang Li,Yihua Hu 한국물리학회 2019 Current Applied Physics Vol.19 No.9
High brightness and precise adjustment of luminescence colour of phosphors are two main targets in the research of phosphor-converted white LEDs. However, few feasible strategy can be employed to achieve the multicolortunable luminescence under the premise of maintaining high quantum efficiency. Here, we demonstrate a highefficiency energy-transfer process from Tb3+ to Eu3+ ions with a higher luminescent quantum efficiency (64.5% and 53.4%, respectively), and green-red multicolor emission in Lu2GeO5 host via varying the doping content of Tb3+ and Eu3+ ions. Besides, Lu2GeO5:Tb3+, Lu2GeO5: Eu3+ and Lu2GeO5: Tb3+, Eu3+ all exhibit weak thermal quenching which ensures the stable use of white LED device in the high temperature environment. This paper provides a novel multicolor-tunable phosphor with high brightness, efficient energy transfer and weak thermal quenching, which presents a potential application for UV-converted white LEDs.
Customer Churn Warning System based on Business Intelligence
Yuan Wang,Yihua Zhang 보안공학연구지원센터 2015 International Journal of u- and e- Service, Scienc Vol.8 No.10
Business intelligence approach is adopted for data mining analysis on the customer transaction data and basic customer information of securities companies. Decision tree algorithm is used to create the customer loss warning model, which is then used to analyze and design the securities data mining system. This system based on Weka source code, realized by JSP language and takes the classification analysis in the business intelligent core technology as the core algorithm. Analyzing this system can assist to mine the customers with potential loss trend and help establish specific detainment strategy to prevent great loss due to customer loss.
Yuan Wang,Yihua Zhang,Qiuting Liu 보안공학연구지원센터 2016 International Journal of Database Theory and Appli Vol.9 No.3
With Fujian Province as object of study, panel data from 1981 to 2012 is selected in this paper. Besides, VAR model is established. Co-integration test, Granger causality, impulse response function and variance decomposition are used for quantitative analysis on correlation between domestic investment, government consumption, household consumption and economic growth in Fujian Province. The author reveals long-term stable balance among investment, government consumption and household consumption in Fujian Province as well as bidirectional causal relationship between economic growth and domestic investment, government consumption and household consumption. For a short term, household consumption is of relatively strong positive impact effect on economic gain, which is served as major impetus of economic growth. Domestic investment is of relatively obvious promotion for economic growth in a short term and of certain negative effect on economic growth in a long term. However, government investment is of relatively small positive impact to economic growth. Such promotion lasts for a longer period. On this basis, the author proposes some policies and recommendations for macroeconomic regulation and control in Fujian Province.
Research on Dialectic Relation between Marine Industrial Structure and Macro Economic Growth
Yuan Wang,Yihua Zhang,Xichun Ge 보안공학연구지원센터 2016 International Journal of u- and e- Service, Scienc Vol.9 No.9
With Fujian Province as object of study, panel data from 1981 to 2013 is selected in this paper. Besides, VAR model is established. Co-integration test, Granger causality and impulse response function are used for quantitative analysis on correlation between the three main marine industries and economic growth in Fujian Province. In the paper, the long-term stable relation between the three main marine industries and economic growth is revealed, and the causal relations between the primary marine industry and economic growth, between the secondary marine industry and economic growth and between tertiary marine industry and economic growth are verified. The government should give priority to the secondary marine industry and effective support to the tertiary marine industry when adjusting the industrial structure and optimizing policies.
Jiadong Lu,Jinglin Liu,Yihua Hu,Xiaokang Zhang,Kai Ni,Jikai Si 대한전기학회 2018 Journal of Electrical Engineering & Technology Vol.13 No.5
High frequency signal injection (HFI) is an alternative method for estimating rotor position of interior permanent magnet synchronous motor (IPMSM). The general method of frequency and amplitude selection is based on error tolerance and experiments, and is usually set with only one group of HF parameters, which is not efficient for different working modes. This paper proposes a novel rotor position estimation scheme by HFI with optimized frequency and amplitude, based on the mathematic model of IPMSM. The requirements for standstill and low-speed operational modes are met by applying this novel scheme. Additionally, the effects of the frequency and amplitude of the injected HF signal on the position estimation results under different operating conditions are analyzed. Furthermore, an optimization method for HF parameter selection is proposed to make the estimation process more efficient under different working conditions according to error tolerance. The effectiveness of the propose scheme is verified by the experiments on an IPMSM motor prototype.