A Service Pipelining Model for Web GIS Based on Distributed Environment

Weng Yu,Cheng WenYi 보안공학연구지원센터 2015 International Journal of Grid and Distributed Comp Vol.8 No.6

Pipeline is one of the classic technologies to enhance efficiency. When the amount of data is becoming more and more big when processing, it becomes a big problem that how to improve the efficiency with existing resources. In the meantime, a large number of older hardware and software feel difficult to deal with new task in new environment with the accumulation of time. In order to ameliorate efficiency of web GIS with low cost, this paper propose a service pipelining model for Web GIS based on distributed environment. The system build a basic service library to reuse plenty of existing resource, and design a segment system to organize pipeline in level of service to improve efficiency. The model can be used in many platforms and occasions, not limited to the application we proposed in this paper. The model we proposed has been proved work well in our experiments and test.

A Customized Web Service Constructing Model Based On Private Cloud

Weng Yu,Peng Guo 보안공학연구지원센터 2015 International Journal of u- and e- Service, Scienc Vol.8 No.11

Ternary organic solar cells based on two compatible PDI-based acceptors with an enhanced power conversion efficiency

Weng, Kangkang,Li, Chao,Bi, Pengqing,Ryu, Hwa Sook,Guo, Yikun,Hao, Xiaotao,Zhao, Dahui,Li, Weiwei,Woo, Han Young,Sun, Yanming The Royal Society of Chemistry 2019 Journal of Materials Chemistry A Vol.7 No.8

<P>Ternary solar cells have been proven to be an effective way to increase the power conversion efficiency (PCE) of organic solar cells (OSCs). Up to now, research effort has mostly focused on fullerene derivatives and acceptor-donor-acceptor (A-D-A) type non-fullerene acceptor-based ternary solar cells, while perylene diimide (PDI)-based ternary devices have been rarely studied. In this contribution, we introduced a new type of ternary solar cell based on a PDI-based small-molecule acceptor (PBI-Por) and a polymer donor (PTB7-Th) with a third PDI-based polymer acceptor (PDI-V). The introduction of PDI-V into the ternary blends not only broadens the absorption of blend films but also increases the electron mobilities. As a result, a high efficiency of 9.43% was obtained for the ternary OSC, which is 20% higher than that of the binary OSC. Detailed studies indicate that PDI-V showed good compatibility with PBI-Por in the blend films, which demonstrates a promising way to fabricate high-performance PDI-based OSCs.</P>

Solubility of N-ethylcarbazole in ethanol+petroleum ether mixtures at various temperatures

Wenge Yang,Keyi Wu,Yong-Hong Hu,Tuan Zhang,Qirun Guo,Shouhai Yang,Ying Shi 한국화학공학회 2015 Korean Journal of Chemical Engineering Vol.32 No.6

The solubility of N-ethylcarbazole in (ethanol+petroleum ether) binary solvent mixtures was measured with the temperature changing from 280.15 K to 316.15 K. The experimental data matched the solvent/Redlich-Kister (CNIBS/R-K) equation and the Jouyban-Acree equation. Computational results showed the CNIBS/R-K equation was more suitable than the Jouyban-Acree equation. The solution process in the thermodynamic properties, including the Gibbs energy, enthalpy, and entropy, was calculated by the van’t Hoff analysis.

A novel Self-healing material application by using Retro-Diels-Alder click chemistry

Weng PENG,Chih-Feng HUANG 한국고분자학회 2016 한국고분자학회 학술대회 연구논문 초록집 Vol.41 No.2

Effect of Nursing Frequency and Creep Feed Provision on the Milk and Feed Intake and Performance of Zero Day Weaned Piglets Reared on a Dummy Sow

Weng, R.C.,Edwards, S.A.,Hsia, L.C. Asian Australasian Association of Animal Productio 2009 Animal Bioscience Vol.22 No.11

One hundred and forty-four piglets with an average birth weight of 1,672${\pm}$13.4 g were used to evaluate different feeding strategies for piglets reared from birth on a dummy sow. A 3${\times}$2 factorial experiment compared three nursing frequencies (1, 3 or 6 h intervals) and two feeding regimes (milk only, or milk combined with access to creep feed and water). The piglets which were nursed at one hour intervals had the lightest body weights at all days, and the poorest combined milk and creep feed dry matter conversion efficiency to piglet body weight gain in the second week. Piglets which were nursed at 3 h intervals had the heaviest body weight at day 15 and 22, but those nursed at 6 h intervals achieved similar body weight by days 29 (milk withdrawal) and 36. Piglets offered creep feed were observed to wean themselves before cessation of milk availability, and the timing of this self-weaning depended on the nursing frequency. The piglets nursed at one hour intervals weaned themselves between day 22 and day 29, those nursed at 3 h intervals weaned themselves between day 15 and day 22, whilst those nursed at 6 h intervals weaned themselves between day 8 and day 15. The piglets which were nursed at 6 h intervals had the highest total dry matter intake in weeks 3 and 4 when fed with milk, creep feed and water but not when fed milk only. They consequently had the poorest dry matter conversion efficiency in the fourth week and overall when fed with milk, creep feed and water, but not when fed milk only. It is concluded that the optimal management routine under these conditions is a 3 h nursing cycle with provision of supplementary creep feed and water.

Variations in the body surface temperature of sows during the post weaning period and its relation to subsequent reproductive performance

Weng Ruey-Chee 아세아·태평양축산학회 2020 Animal Bioscience Vol.33 No.7

Objective: A study was made investigate factors affecting body surface temperature changes after weaning in sows, whether these can be used to aid detection of natural estrus and how they relate to subsequent reproductive performance. Methods: A total of 132 sows were selected during summer from a breeding farm, with mean parity of 3.6±2.3 and 28.5±0.9 days lactation length. Four daily measurements (6:00, 8:00, 16:00, and 18:00) of vulva (VST), udder (UST), ear base and central back skin temperatures for individual sows were taken by an infrared thermometer, continuing up to 8 days post weaning. Results: The VST obtained from sows showing estrus at 4 days post-weaning (4DPW), 5DPW, and 6DPW showed a peak at the fourth day post-weaning, but then started to decrease. The VST of sows not detected in standing heat (NDPW) remained at a lower level during the experiment, but UST was increased soon after weaning. The VST-UST temperature differences during daytime of sows that were showing behavioural standing heat on 4DPW, 5DPW, 6DPW, and 7DPW were 0.46°C±0.123°C, 0.71°C±0.124°C, 0.66°C ±0.171°C, and 0.58°C±0.223°C, respectively. The NDPW sows had the highest UST observed, but also the lowest VST so that a more negative value of temperature difference (–0.31°C) was seen during first few days post-weaning. A total of 119 sows were observed to show standing heat and were bred. The later the estrus, the smaller the litter size (p = 0.005). Conclusion: Sows which did not show behavior indicative of stable standing heat after weaning had a VST which remained at a lower level, but the UST increased soon after weaning. Therefore, for sow heat detection under field conditions, the changes of VST and UST and difference between the two should be considered together to increase the accuracy of detection.

Effect of Individual, Group or ESF Housing in Pregnancy and Individual or Group Housing in Lactation on the Performance of Sows and Their Piglets

Weng, R.C.,Edwards, S.A.,Hsia, L.C. Asian Australasian Association of Animal Productio 2009 Animal Bioscience Vol.22 No.9

To evaluate different housing systems, 80 gilts were randomly allocated at puberty to four treatments: i) sow stall in gestation followed by farrowing crate (SC), ii) group housing with individual feeding in gestation followed by farrowing crate (GC), iii) ESF (Electronic Sow Feeding) system in gestation followed by farrowing crate (EC), and iv) ESF system followed by group farrowing pen (EG). The results showed that stalled sows had a longer interval between puberty and second estrus (p<0.001). The sows kept in the ESF system gained more body weight (p<0.01) and backfat (p<0.05) prior to service, and more backfat during gestation (p<0.05), but also had greater backfat losses in the subsequent lactation (p<0.01). Sows changing from loose housing to confinement at farrowing had longer gestation length (p<0.001). Total litter size did not differ significantly between gestation treatments, but the number of stillborn piglets was significantly higher in the SC treatment (p<0.01). After weaning, SC sows had the longest interval for rebreeding (p<0.001). Some EG sows came into heat before weaning, giving this treatment the shortest interval. These results indicate that gestation confinement in sow stalls had several detrimental effects on sow performance relative to group housing.

Path Following Control of Automated Guided Vehicle Based on Model Predictive Control with State Classification Model and Smooth Transition Strategy

Weng Xun,Zhang Jingtian,Ma Ying 한국자동차공학회 2021 International journal of automotive technology Vol.22 No.3

Path following control of the automatic guided vehicle (AGV) for material handling in the plant requires a smooth and high-precision continuous attitude adjustment. However, there are many difficulties in designing the controller, such as actuator saturation, parameter selection, and the influence of deviations relations. In this paper, an improved model predictive control SCMPC-ST with a state classification model (SCM) and a smooth transition (ST) strategy is proposed to address these problems. First, based on the deviations relations and the actuator saturation, the SCM is designed to divide the pose states of AGV into three stages. With clearly objective functions and boundary constraints, SCM allows the pose states can be transferred sequentially, which avoids the problem of parameter selection. Second, use the analytical method to resolve SCM to directly obtain the desired control law, which provides excellent performance in real-time. Finally, the smooth transition strategy is built to adjust the control law at the transition step and overshoot step to ensure the stability of the control process. Simulation results show that by focusing on adjusting the deviations relations, SCMPC-ST can make AGV eliminate all deviations continuously and smoothly while maintaining high accuracy.

Mobile taxi booking application service’s continuance usage intention by users

Weng, Gooi Sai,Zailani, Suhaiza,Iranmanesh, Mohammad,Hyun, Sunghyup Sean Pergamon 2017 Transportation Research Part D. Transport & Enviro Vol.57 No.-

<P><B>Abstract</B></P> <P>The long-term development of a mobile booking taxi application service depends on the continued use of its passengers. The aim of this study is to investigate the determinants of the mobile taxi booking application service’s continuance intention, using the technology continuance theory by including the perceived risk and subjective norms. The data were collected by surveying 387 users of the mobile taxi application service. The data were analysed by applying the partial least squares technique. The analysis showed that the technology continuance theory has extensive power to explain the continuance intention to use the mobile booking taxi application. Subjective norms also have a significant effect on the attitude of mobile booking taxi application users which represents an important contribution to technology continuance theory extension. The theoretical and practical significances of the study have been discussed.</P> <P><B>Highlights</B></P> <P> <UL> <LI> The early acceptance of an MTB Apps does not guarantee continuation. </LI> <LI> Studies on continuance intention of users toward MTB App use are still lacking. </LI> <LI> Results will help App developers to grasp the factors that result in continued MTB App use. </LI> </UL> </P>