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Precoding Method for Broadband PLC MIMO System of Eliminating Interference
Jingxue Ran,Yufei Cao 보안공학연구지원센터 2016 International Journal of u- and e- Service, Scienc Vol.9 No.5
Power line carrier communication, with the widespread application, broadband multi-input multi-output system will have a co-channel interference, the interference is in addition to asynchronous pulse noise and pulse cycle factors influencing the multi-input multi-output (MIMO) system's largest broadband power line carrier. Aiming at this problem, this paper, by using multiple input multiple output channel state information, the sender with the method of block diagonalization, eliminate the interference between the channel, so as to improve the capacity of broadband power line carrier system, at the same time reduce the bit error rate of the system. Through the simulation results and analysis can show that the proposed block diagonalization pre-coding method effectively eliminates the common channel interference, improve the drying ratio, thus improve the maximum mutual information of the system and reduce the bit error performance of the system.
From a Tea Event to a Host Destination: Linking Motivation, Image, Satisfaction and Loyalty
손은미,Jingxue Jessica Yuan,Tun-Min (Catherine) Jai 한국관광학회 2014 International Journal of Tourism Sciences Vol.14 No.3
In a highly competitive tourism environment, capitalizing on culinary resources such as food and beverage-related events is an effective marketing tool that can enhance a destination image and tourist experience. This study adopted an integrated approach to understand culinary tourist behavior by examining the theoretical and empirical evidence of the relationship between motivation, image, satisfaction and loyalty. The concept of image, which provides for experiential perception and affect, was introduced and explored as a link between psychological constructs. Data from 543 subjects were collected at the Tea Cultural Festival in South Korea. The findings suggest that tourists’ positive perception of the event featuring local food and tea can have a positive influence on their decision-making process about holiday destinations. This study contributes to tourism marketing strategies and tourism planning as well as the theoretical development on culinary tourists’ behavior.
Service quality, satisfaction, and behavioral intention in home delivered meals program
Joung, Hyun-Woo,Kim, Hak-Seon,Yuan, Jingxue Jessica,Huffman, Lynn The Korean Nutrition Society 2011 Nutrition Research and Practice Vol. No.
This study was conducted to evaluate recipients' perception of service quality, satisfaction, and behavioral intention in home delivered meals program in the US. Out of 398 questionnaires, 265 (66.6%) were collected, and 209 questionnaires (52.5%) were used for the statistical analysis. A Confirmatory Factor Analysis (CFA) with a maximum likelihood was first conducted to estimate the measurement model by verifying the underlying structure of constructs. The level of internal consistency in each construct was acceptable, with Cronbach's alpha estimates ranging from 0.7 to 0.94. All of the composite reliabilities of the constructs were over the cutoff value of 0.50, ensuring adequate internal consistency of multiple items for each construct. As a second step, a Meals-On-Wheels (MOW) recipient perception model was estimated. The model's fit as indicated by these indexes was satisfactory and path coefficients were analyzed. Two paths between (1) volunteer issues and behavioral intention and (2) responsiveness and behavioral intention were not significant. The path for predicting a positive relationship between food quality and satisfaction was supported. The results show that having high food quality may create recipient satisfaction. The findings suggest that food quality and responsiveness are significant predictors of positive satisfaction. Moreover, satisfied recipients have positive behavioral intention toward MOW programs.
Mechanism on Computer Access Permission Management Based on the Proposed Dynamic Password Algorithm
Jiujun Cheng,Yang Yang,Jianyu Shao,Jingxue Liao 보안공학연구지원센터 2015 International Journal of Security and Its Applicat Vol.9 No.11
With the rapid development of information technology, personal computer privacy and permission management are becoming more and more important. Based on RSA encryption algorithm, we design a dynamic password encryption and codec algorithm, and propose a mechanism on computer access permission management which is capable of dealing with situations both online and offline. In the offline mode, administrators can authenticate users by matching their contact information to that registered in administrators’ mobile terminal. Generated by the co-work of a personal computer and a mobile terminal, the dynamic password makes cracking the password a trickier task. Permission control information is also added into the dynamic password, and file filter system will be loaded once the screen is successfully unlocked, so as to protect private directories or files from being accessed without authorization. In online mode, the system provides real-time video for identity verification, which makes the system more secure and convenient. Experiment results show that this dynamic password based mechanism on computer access permission management is efficient in dealing with existing problems in personal privacy and access permission management.
Service quality, satisfaction, and behavioral intention in home delivered meals program
Hyun-Woo Joung,Hak-Seon Kim,Jingxue Jessica Yuan,Lynn Huffman 한국영양학회 2011 Nutrition Research and Practice Vol.5 No.2
This study was conducted to evaluate recipients’ perception of service quality, satisfaction, and behavioral intention in home delivered meals program in the US. Out of 398 questionnaires, 265 (66.6%) were collected, and 209 questionnaires (52.5%) were used for the statistical analysis. A Confirmatory Factor Analysis (CFA) with a maximum likelihood was first conducted to estimate the measurement model by verifying the underlying structure of constructs. The level of internal consistency in each construct was acceptable, with Cronbach's alpha estimates ranging from 0.7 to 0.94. All of the composite reliabilities of the constructs were over the cutoff value of 0.50, ensuring adequate internal consistency of multiple items for each construct. As a second step, a Meals-On-Wheels (MOW) recipient perception model was estimated. The model's fit as indicated by these indexes was satisfactory and path coefficients were analyzed. Two paths between (1) volunteer issues and behavioral intention and (2) responsiveness and behavioral intention were not significant. The path for predicting a positive relationship between food quality and satisfaction was supported. The results show that having high food quality may create recipient satisfaction. The findings suggest that food quality and responsiveness are significant predictors of positive satisfaction. Moreover, satisfied recipients have positive behavioral intention toward MOW programs.
Network-level Optimization of Bus Stop Placement in Urban Areas
Jingxu Chen,Shuaian Wang,Zhiyuan Liu,Xuewu Chen 대한토목학회 2018 KSCE Journal of Civil Engineering Vol.22 No.4
Bus stops provide accessibility to public transit service, whereas they also influence the efficiency of mobility due to the extradwell time. The decision of bus stop locations is a tradeoff between access coverage and mobility. This paper formulates a biobjectiveoptimization model of bus stop placement problem at the network level. Two objectives are pertinent to the improvement ofmobility: minimization of total dwell time at stops and minimization of total number of bus stops. Access coverage is constrained toensure a certain level of accessibility. The issue of stop congestion and its effect on road traffic flow is also considered in the model. The model is applied to a case study of the bus network in urban areas of Yancheng, China. The results show that the proposed modelcan be efficiently solved by CPLEX to obtain Pareto optimal solutions for real-case problems.
교정 고정원 스크류의 위장관으로 섭취시 예후에 대한 실험적 평가
이경욱(Jingxu Li),최병호(Byung-Ho Choi),김연환(Yeon-Hwan Kim),김한성(Han-Sung Kim),고창용(Chang-Yong Ko) 대한구강악안면외과학회 2007 대한구강악안면외과학회지 Vol.33 No.2
Foreign bodies with a sharp edge which are accidentally swallowed are likely to become lodged in the stomach. An animal study was undertaken to determine the outcome of orthodontic anchorage screw ingestion. The radiographic findings of ten Mongolian dogs that ingested a total of 10 orthodontic anchorage screws and 10 reamers (both a screw and a reamer per dog) were evaluated. The study showed that all orthodontic anchorage screws and reamers reaching the stomach spontaneously passed, with the exception of two reamers. Further investigation of clinical cases might be necessary to determine whether the results of our animal study are in accordance with clinical findings.
송경욱 ( Song Jingxu ),유정호 ( Yu Jung-ho ) 한국건축시공학회 2021 한국건축시공학회 학술발표대회 논문집 Vol.21 No.1
Since the first BIM development outline was issued in 2011, China has initially tried to adopt BIM in the construction industry. After the BIM guide was issued in 2017, China has officially entered the era of building informatization in the construction industry. Through the statistical data of BIM application reports in China's construction industry from 2014 to 2020, this paper concludes that China has made great progress in the popularization rate of BIM, but has little effect in the adoption in actual projects. Through the reading and analysis of relevant documents in China, 13 obstacle factors for BIM technology adoption in construction enterprises are preliminarily defined.