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A Multi-Domain Web Text Feature Extraction Model for e-Science Environment
Weng Yu 보안공학연구지원센터 2015 International Journal of Signal Processing, Image Vol.8 No.11
The traditional information extraction methods based on specific domain usually depend on the domain dictionaries to discover the text feature. It is inconvenient for reproducing and difficult to transplant in multi-domain environment. The application scope is limited seriously. Oriented to the deficiencies above, a multi-domain web text feature extraction model for e-Science is proposed (named e-FTM). This model adopts the Chinese split words technology without dictionary into the process of multi-domain text feature discovery and avoids the dependency of domain dictionaries effectively. With the help of classification of common and individual features, the model tracks the generation and the development trend of domain events dynamically, and forms a couple of local data centers eventually. Through cooperative scheduling the domain knowledge between different local data centers, the knowledge utilization efficiency of the domain information in the global scope is improved sharply. To validate the performance, the experiments on the multi-domain text feature extraction, topic features dynamical tracking and the domain knowledge cooperative scheduling demonstrate that the model has higher application validity and practicality in e-Science environment.
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Weng Wenya,Ge Tingwen,Wang Yi,He Lulu,Liu Tinghao,Wang Wanning,Zheng Zongyu,Yu Lechu,Zhang Chi,Lu Xuemian 대한당뇨병학회 2020 Diabetes and Metabolism Journal Vol.44 No.4
Background: Fibroblast growth factor 21 (FGF21) has been only reported to prevent type 1 diabetic nephropathy (DN) in the streptozotocin-induced type 1 diabetes mellitus (T1DM) mouse model. However, the FVB (Cg)-Tg (Cryaa-Tag, Ins2-CALM1) 26OVE/PneJ (OVE26) transgenic mouse is a widely recommended mouse model to recapture the most important features of T1DM nephropathy that often occurs in diabetic patients. In addition, most previous studies focused on exploring the preventive effect of FGF21 on the development of DN. However, in clinic, development of therapeutic strategy has much more realistic value compared with preventive strategy since the onset time of DN is difficult to be accurately predicted. Therefore, in the present study OVE26 mice were used to investigate the potential therapeutic effects of FGF21 on DN. Methods: Four-month-old female OVE26 mice were intraperitoneally treated with recombinant FGF21 at a dose of 100 μg/kg/day for 3 months. The diabetic and non-diabetic control mice were treated with phosphate-buffered saline at the same volume. Renal functions, pathological changes, inflammation, apoptosis, oxidative stress and fibrosis were examined in mice of all groups. Results: The results showed that severe renal dysfunction, morphological changes, inflammation, apoptosis, and fibrosis were observed in OVE26 mice. However, all the renal abnormalities above in OVE26 mice were significantly attenuated by 3-month FGF21 treatment associated with improvement of renal adenosine 5´-monophosphate (AMP)-activated protein kinase (AMPK) activity and sirtuin 1 (SIRT1) expression. Conclusion: Therefore, this study demonstrated that FGF21 might exert therapeutic effects on DN through AMPK-SIRT1 pathway.
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THE CHARACTERISTICS OF ZINC DIFFUSED NORMALLY ON GaAs AND InP JUNCTION FETs
Weng, Tung H. 대한전자공학회 1989 ICVC : International Conference on VLSI and CAD Vol.1 No.1
In this paper, a new technique using semi-sealed quartz bottle for zinc diffusion in GaAs and InP was employed. The basic requirement for zinc diffusion in these materials is to provide an overpressure ambient 50 that decomposition at the diffusion temperature can be avoided. This was done for the case of InP by placing InP wafer with diffusion charge which contained pure zinc and a small amount of InP powder in a semi-sealed bottle. This small amount of InP powder seemed to have provided the needed overpressure ambient to avoid decomposition. TA e surface showed no degradation after diffusion and maintained its original smooth surface. However, the surface was decomposed if no InP powder was added in the diffusion charge. For the case of GaAs, no GaAs powder was needed in the diffusion charge. Only pure zinc was required for producing heavily doped P-layer. The vapor produced by GaAs in the semi-sealed bottle during diffusion seemed to be sufficient to avoid decomposition. This is in sharp contrast to the behavior of zinc diffusion in InP using the same technique The detailed characteristics of the diffused layer of InP are presented. Similar characteristics for GaAs were also obtained. Junction field effect transistors were fabricated using the P layer formed by semi-sealed diffusion for both InP and GaAs. For InP junction FETs the measured transconductance varies from 80 to 100 ms/mm gate length. GaAs junction FETs show similar results with well behaved I-V characteristics.
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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.
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Roles of Formal Institutions and Social Capital in Innovation Activities: A Cross-Country Analysis
Weng Chang Lee,Siong Hook Law 연세대학교 동서문제연구원 2017 Global economic review Vol.46 No.3
This paper investigates the roles of formal institutions and social capital in countries’ innovation activities. The sample consists of 62 developed and developing countries, using the ordinary least squares robust standard error estimations, instrumental variable (IV) estimators, and quantile regression. The empirical results indicate that formal institutions and social capital complement one another in influencing countries’ innovations level. In terms of the relative importance of both in promoting innovation activities, the social capital has greater role compared to formal institutions. Furthermore, the empirical result suggests that innovation level tends to be higher in countries with higher social capital. We also use the quantile regression to estimate whether the relationship among formal institutions, social capital, and innovation differs at different points in the conditional distribution of innovation. The results demonstrate that formal institutions yield a significant positive impact only after exceeding in 50th quantile, whereas social capital do so at lower 10th quantile. Therefore, in addition to a policy focus on improving the formal institutions, countries with a low level of innovation should enrich social capital in their promotion of innovation activity.
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A Distributed WebGIS Platform based on SaaS Architecture
Weng Yu,Xiaodong Jia,Yuan Jie 보안공학연구지원센터 2015 International Journal of u- and e- Service, Scienc Vol.8 No.12
The emergence of cloud computing has changed the software development and deployment, providing users with great convenience. But even in the cloud computing environment, software development efficiency is particularly low. In order to improve the efficiency of software development, and make software release easier, we designed a layered service computing platform. With the help of basic services, the platform makes software development and publishing simple and efficient. To demonstrate our platform, we described the process of building a simple WebGIS system in this paper. This process represents the software development process in our platform. Experiment shows that our work is not only available but also simplifies the process of software development.
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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.
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Weng-Sheng Kuo 한국원자력학회 2022 Nuclear Engineering and Technology Vol.54 No.7
An approximate method for calculating the cadmium ratio of a cyclotron-based thermal neutron radiography system was developed. In this method, the Monte-Carlo code, MCNP6.2, was employed to calculate the neutron capture rates of Au-197, and the cadmium ratio was obtained by computing the ratio of neutron capture rates. From the simulation results, the computed cadmium ratio is reasonably acceptable, and the assumption of ignoring the fast neutron contribution to the cadmium ratio is valid.
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Weng, R.C.,Edwards, S.A.,Hsia, L.C. Asian Australasian Association of Animal Productio 2009 Animal Bioscience Vol.22 No.11
To evaluate the effect of different housing systems on sow behavior, 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). Behavioral observations were carried out on a total of 16 animals per treatment at the following stages: first day of allocation to housing treatment, day of service, 80 days after service, 109 days after service on entry to farrowing accommodation, 24 h before farrowing, day of farrowing, 14, 27 and 28 days after farrowing, at weaning. On each occasion, individual animals were observed for a 24 period with one minute time sampling. There were significant differences (p<0.001) between stages of the reproductive cycle for all the behavior patterns in all treatments. On the first day in experimental housing treatments, sows spent more time rooting and dog-sitting. Activity and investigatory behavior decreased as pregnancy progressed. An activity peak was apparent just before farrowing, followed by a high level of inactivity on the day of farrowing. Time spent active, eating and drinking increased as lactation progressed, and greatest activity and locomotion was seen immediately following weaning. There were significant differences between housing treatments (p<0.01) for standing, moving, eating, drinking, dog-sitting and lying. During pregnancy SC sows spent more time standing, rooting, drinking and dog sitting, while EC sows spent less time rooting and drinking and more time lying. During lactation, GC sows spent more time standing, moving and eating, less time dog sitting and lateral lying. Nursing frequency was reduced in GC sows (p<0.001). The maternal and piglet behaviors were influenced strongly by environment during lactation. However, it was also shown that previous housing history can influence the maternal behavior in the pre-farrowing stage and during early lactation.
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