Is the Mobile Touch Device a Good Tool to Learn Chinese?

( Zhe Chen ),( Bumsuk Kim ),( Philipp Osterwald ),( Da Sun ),( Xuhui Liu ),( Yalong Chen ),( Constantin Siemons ),( Jean Elie Guillaume ),( Shuiping Chen ),( Liangliang Zhang ),( Karl Jesper Ornerud ) 한국감성과학회 2014 춘계학술대회 Vol.2014 No.-

Learning Chinese language becomes increasingly important and popular worldwide. It is a challenge for native alphabetic language speaker to learn Chinese as Chinese is a symbolic language. Various learning methods are used to help foreign students to improve their learning performance. Interactive applications in the mobile touch devices make it possible to learn Chinese anytime anywhere. It is interesting to discover the role of mobile touch devices in Chinese learning. Thus, this study investigated the usability of mobile touch devices, including mobile phones and tablet personal computer, in Chinese learning for foreign students. This study included two phases. In the first phase, an online survey and an after-interview were used to investigate the users`attitude to using mobile touch devices in Chinese learning. Thirty international students were invited to the survey (19 males and 11 females) with 10Germany, 4 French, 3 Italians, 2 Iranian, 2 Russians, 2 English, 2 American, 1 Indonesian, 1 Pakistani, 1 Thai, 1 Swedish and 1 Kazakhstan. In the second phase, an experiment was conducted to evaluate the effect of mobile touch devices in Chinese learning.

Is the mobile touch device a good tool to learn Chinese?

Zhe Chen,Yatzu Tsao,Bumsuk Kim,Philipp Osterwald,Da Sun,Xuhui Liu,Yalong Chen,Constantin Siemons,Jean Elie Guillaume,Shuiping Chen,Liangliang Zhang,Karl Jesper Ornerud 대한인간공학회 2014 대한인간공학회 학술대회논문집 Vol.2014 No.5

Learning Chinese language becomes increasingly important and popular worldwide. It is a challenge for native alphabetic language speaker to learn Chinese as Chinese is a symbolic language. Various learning methods are used to help foreign students to improve their learning performance. Interactive applications in the mobile touch devices make it possible to learn Chinese anytime anywhere. It is interesting to discover the role of mobile touch devices in Chinese learning. Thus, this study investigated the usability of mobile touch devices, including mobile phones and tablet personal computer, in Chinese learning for foreign students. This study included two phases. In the first phase, an online survey and an after-interview were used to investigate the users’ attitude to using mobile touch devices in Chinese learning. Thirty international students were invited to the survey (19 males and 11 females) with 10 Germany, 4 French, 3 Italians, 2 Iranian, 2 Russians, 2 English, 2 American, 1 Indonesian, 1 Pakistani, 1 Thai, 1 Swedish and 1 Kazakhstan. In the second phase, an experiment was conducted to evaluate the effect of mobile touch devices in Chinese learning. Fourteen participants were invited to experiment with 8 international students and 6 Chinese students. International students were considered as beginner learner students compared to Chinese students who were considered as advanced learner. Both Android and iOS developing systems for smart devices are considered in the experiment. The results of the survey showed users have a positive attitude towards using mobile touch devices in Chinese learning. The interview results indicated that most participants were willing to pay for it if the usability of learning tool in mobile devices improves. The experiment results indicated the advantage and disadvantage of using mobile phones and tablets in Chinese learning. It was suggested that beginning leaner regarded motivation and organization of Chinese learning tool in the mobile devices. Advanced learner focused on visual design, touch performance, cognitive process. As an exploration of usability of mobile touch device in Chinese learning, this study found that user held a positive attitude to learning Chinese in mobile touch devices. Mobile touch device is a good tool to learn Chinese as it provides interactive learning tools. However, it needs much effort for the mobile application designer to improve the usability. This study had suggestions on how to develop a user-friendly Chinese learning tool in touch mobile devices.

Opportunities and Challenges of HTTP Adaptive Streaming

Hongyun Yang,Xuhui Chen,Zongkai Yang,Xiaoliang Zhu,Yi Chen 보안공학연구지원센터 2014 International Journal of Future Generation Communi Vol.7 No.6

HTTP-based Adaptive Streaming (HAS) has emerged as the prominent technology for the delivery of audiovisual content over the Internet in recent years and has a major impact on network traffic. Although traditional stateful session-based streaming solution based on UDP was used initially for media content delivery, researchers and practitioners soon realize that HAS technology, due to get through firewalls friendly ,transfer NAT easily ,effectively utilize the existing networking infrastructure and provide uninterrupted video streaming service to users with dynamic network conditions and heterogeneous devices, has the potential to improve the Quality of Experiments compared with traditional streaming technologies. Consequently, various HAS media streaming solutions have been proposed and deployed successfully. This paper reviews the state-of-the-art of HAS technology and discoveries achieved by numerous researchers. We describe the basic taxonomy of HTTP adaptive streaming systems and summarize the major issues associated with HAS systems’ design. Then we outline the key challenges and open problems and highlight possible avenues for future directions.

Effects of rumen-protected biotin on the growth performance, nitrogen utilization and blood parameters of yearling Liaoning cashmere doelings

Liu Haiying,Lin Ying,Chen Xuhui,Yang Guiqin 아세아·태평양축산학회 2023 Animal Bioscience Vol.36 No.11

Objective: This study was conducted to investigate the effects of rumen-protected biotin (RPB) on growth performance, nutrient digestibility, nitrogen utilization and plasma biochemical parameters of Liaoning cashmere goats during the cashmere fiber growing period. Methods: Sixteen 6-month-old Liaoning cashmere twin-doelings (24.8±1.20 kg) were allocated to 2 diet groups that were individually ad libitum fed 30% concentrate and 70% forage diet (dry matter [DM]) by a paired experimental design. Goats of the control group were fed the basal diet, while goats belonging to the RPB group were fed the basal diet with 10 mg RPB/d per animal. The duration of the experiment was 16 weeks with two 8-week periods. Digestibility was determined at weeks 7 and 15, and other measures were taken every four weeks. Results: Compared with the control group, the average daily gain of the RPB group increased by 10.94% (p<0.05), and the intake of neutral detergent fiber was increased (p = 0.045). There were some increasing tendencies for the intake of DM, acid detergent fiber and ether extract (p = 0.070, 0.088, and 0.070, respectively). The intake and digestibility of N tended to increase (p = 0.062 and 0.093, respectively), while the N fecal excretion percentage of N intake was decreased (p = 0.093) in the RPB compared with the control group. N retention tended to increase (p = 0.084) with the addition of adding RPB to the diet. Plasma total protein was increased (p = 0.037), whereas the urea-N concentration was decreased (p = 0.049) in the RPB diet group compared with the control diet group. The levels of propionyl-CoA carboxylase (p<0.001) and methylmalonyl-CoA (p = 0.013) were increased in the RPB group. Conclusion: Supplementation of rumen-protected biotin in the diet of cashmere goats can enhance the utilization of N and improve daily weight gain during cashmere fiber growing period.

An Efficient Supplier Side Scheduling Algorithm for P2P Live Streaming System

Hongyun Yang,Xiaoliang Zhu,Xuhui Chen 보안공학연구지원센터 2013 International Journal of Multimedia and Ubiquitous Vol.8 No.6

Investigation of Grinding and Lapping Surface Damage Evolution of Fused Silica by Inductively Coupled Plasma Etching

Zuocai Dai,Shanyong Chen,Xuhui Xie,Lin Zhou 한국정밀공학회 2019 International Journal of Precision Engineering and Vol.20 No.8

Surface damage has great influence on optical properties, especially the laser-induced damage threshold of optics, and it has become a difficult and basic issue to find suitable methods to efficiently remove the surface damage for improving the surface quality. In this paper, the characteristic evolution of brittle scratch and ground/lapped surface damage during inductively coupled plasma etching (ICPE) process are experimentally investigated on fused silica. Results of damage removal tests show ICPE can efficiently remove brittle scratch and eliminate the lateral and medial cracks. The PV (peak to valley) and RMS (root mean square) values of surface roughness increase with the exposure of lateral and medial cracks, and then gradually decreases with further etching. Finally, the ground and lapped fused silica surfaces with a size of 300 × 300 × 20 mm3 are efficiently processed by ICPE. The power spectral density analysis further demonstrates that the damage can be efficiently removed by ICPE. This study reveals the damage evolution during ICPE process and also provides technical guidance for optimizing the efficient damage removal process to rapidly improve surface quality, precision and fabrication efficiency of fused silica optics.

REMOVAL OF CATIONIC DYES FROM AQUEOUS SOLUTION USING CARBON-ENCAPSULATED SUPERPARAMAGNETIC COLLOIDAL NANOPARTICLES AS ADSORBENT

HUI WANG,QIANWANG CHEN,XUHUI ZHOU 성균관대학교(자연과학캠퍼스) 성균나노과학기술원 2013 NANO Vol.8 No.1

This paper demonstrates the application of negative charge-functionalized carbon-encapsulated superparamagnetic colloidal nanoparticles being as nanoadsorbents for the removal of cationic dyes from aqueous solutions. Adsorption characteristics of the magnetic nanoadsorbents were examined using methylene blue as adsorbates, exhibiting excellent ability to remove cationic dyes from aqueous solutions. In addition, the influences of uptake time, concentration of nanoadsorbents and pH values of aqueous solution on the removal of cationic dyes have been discussed. Results show that the removal efficiency can be up to 90% at a dye concentration of 100 mg L-1 when the uptake time is 1 min, which indicates rapidly removal ability of the magnetic nanoadsorbents. Furthermore, other cationic dyes including rhodamine B and methyl violet were used to examine the universality of nanoadsorbents.

Comparison study of the effect of bridge-tunnel transition on train aerodynamic performance with or without crosswind

Lei Zhou,Tanghong Liu,Zhengwei Chen,Wenhui Li,Zijian Guo,Xuhui He,You-Wu Wang 한국풍공학회 2021 Wind and Structures, An International Journal (WAS Vol.32 No.6

This paper studied the case of high-speed train running from flat ground to bridges and into/out of tunnels, with or without crosswind based on the Computational Fluid Dynamics (CFD) method. First, the flow structure was analyzed to explain the influence mechanisms of different infrastructures on the aerodynamic characteristics of the train. Then, the evolution of aerodynamic forces of the train during the entire process was analyzed and compared. Additionally, the pressure variation on the train body and the tunnel wall was examined in detail. The results showed that the pressure coefficient and the flow structure on both sides of the high-speed train were symmetrical for no crosswind case. By contrast, under crosswind, there was a tremendous and immediate change in the pressure mapping and flow structure when the train passing through the bridge-tunnel section. The influence of the ground-bridge transition on the aerodynamic forces was much smaller than that of the bridge-tunnel section. Moreover, the variation of aerodynamic load during the process of entering and exiting the bridge-tunnel sections was both significant. In addition, in the case without crosswind, the change in the pressure change in the tunnel conformed to the law of pressure wave propagation, while under crosswind, the variation in pressure was comprehensively affected by both the train and crosswind in the tunnel.

The influence of vehicles on the flutter stability of a long-span suspension bridge

Yan Han,Shuqian Liu,C.S. Cai,Jianren Zhang,Suren Chen,Xuhui He 한국풍공학회 2015 Wind and Structures, An International Journal (WAS Vol.20 No.2

The presence of traffic on a slender long-span bridge deck will modify the cross-section profileof the bridge, which may influence the flutter derivatives and in turn, the critical flutter wind velocity of thebridge. Studies on the influence of vehicles on the flutter derivatives and the critical flutter wind velocity ofbridges are rather rare as compared to the investigations on the coupled buffeting vibration of thewind-vehicle-bridge system. A typical streamlined cross-section for long-span bridges is adopted for bothexperimental and analytical studies. The scaled bridge section model with vehicle models distributed on thebridge deck considering different traffic flow scenarios has been tested in the wind tunnel. The flutterderivatives of the modified bridge cross section have been identified using forced vibration method and theresults suggest that the influence of vehicles on the flutter derivatives of the typical streamlined cross-sectioncannot be ignored. Based on the identified flutter derivatives, the influence of vehicles on the flutter stabilityof the bridge is investigated. The results show that the effect of vehicles on the flutter wind velocity isobvious.

Driving safety analysis of various types of vehicles on long-span bridges in crosswinds considering aerodynamic interference

Yan Han,Jingwen Huang,C.S. Cai,Suren Chen,Xuhui He 한국풍공학회 2019 Wind and Structures, An International Journal (WAS Vol.29 No.4

Strong winds threaten the safety of vehicles on long-span bridges considerably, which could force traffic authorities to reduce speed limits or even close these bridges to traffic. In order to maintain the safe and economic operation of a bridge, a reasonable evaluation of the driving safety on that bridge is needed. This paper aims at carrying outdriving safety analyses for three types of vehicles on a long-span bridge in crosswinds by considering the aerodynamic interference between the bridge and the vehicles based on the wind-vehicle-bridge coupling vibration analysis. Firstly, CFD numerical simulations along with previously obtained wind tunnel testing results were used to determine the aerodynamic force coefficients of the three types of vehicles on the bridge. Secondly, the dynamic responses of the bridge and the vehicles under crosswinds were simulated, and based on those, the driving safety analyses for the three types of vehicles on the bridge were carried out for both cases considering and not considering the aerodynamic interference between the vehicles and the bridge. Finally, the effect of the aerodynamic interference on the safety of the vehicles was investigated. The results show that the aerodynamic interference between the bridge and the vehicles not only affects the accident critical wind speed but also the accident type for all three types of vehicles. Such effects are also different for each of the three types of vehicles being studied.