http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Lue Fang,Rachel C. F. Sun,Mantak Yuen 서울대학교 교육연구소 2017 Asia Pacific Education Review Vol.18 No.3
China’s rural to urban migration is the largest population movement in human history. To unpack the intertwining relationship between migration and education, previous research tended to view migrant children as one universally vulnerable category, while ignoring the potential disparity in family socialization and functioning. This study investigated how these rural to urban migrant children in Zhejiang, China, described the ways in which their parents are involved in their education. A total of 30 migrant children (4th–9th Grade, mean age = 13 years) participated in the interviews. The results suggested that although they shared similar socioeconomic background, the high-achieving migrant children reported more parental support in academic socialization at home and in school than did their low-achieving counterparts. The study highlighted the salient role of socio-cultural factors such as perceptions of societal demands in influencing parenting ideology and behavior. The study concluded that the substantial in-group variation in children’s educational experiences might be attributable to differences in parental educational values and parenting styles, which are shaped by the broader social milieu.
Lue Yeou-Feng,Hsiao Wei-Liang,Chen Yi-Shun 한국자동차공학회 2023 International journal of automotive technology Vol.24 No.2
Lubricants, such as any types of greases and oils, are usually used to reduce the effect of friction. However, they also have multifunctions that increase the overall performance and application life. To clarify how lubricants decrease friction and reduce friction-related issues, this study evaluated the performance of specific fuel consumption and exhaust emissions (such as hydrocarbon, carbon monoxide, and particulate matter) of motorcycle with nanosilica (nano-SiO2) added to the original lubricant. Lubricants with 0.5, 1.5, 2.5, 3.5, and 4.5 wt.% nano-SiO2 were evaluated after testing their basic properties and conducting tribology tests. The lubricant with 3.5 wt.% nano-SiO2 was the best candidate for the four-stroke engine motorcycle experiments. The results of the tribology experiment with nano-SiO2 lubricant showed that the abrasion loss corresponding to the 3.5 wt.% nano-SiO2 lubricant decreased by an average of 42.43 %. Overall, the 3.5 wt.% nano-SiO2 lubricant improved the effect of lubrication. The primary focus of the current study was the development of nano-SiO2 lubricant technology for applications in industry environments.
Performance evaluation on vacuum pumps using nanolubricants
Yeou-Feng Lue,Yu-Chun Hsu,Tun-Ping Teng 대한기계학회 2016 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.30 No.9
This study produced alumina (Al 2 O 3 ) nanovacuum-pump lubricants (NVALs) by involving the dispersion of Al 2 O 3 nanoparticles in a vacuum-pump lubricant (VAL) with oleic as a dispersant. Experiments were conducted to evaluate the suspension performance, thermal conductivity, viscosity, specific heat, tribological performance and vacuum-pump performance of the NVALs. The experimental results obtained from the vacuum-pump performance tests show that the NVALs with Al 2 O 3 concentration of 0.2 wt.% and oleic concentration of 0.025 wt.% yielded the lowest electricity consumption, conserving 2.39% of electricity compared with the VAL. No marked difference was observed between the temperatures of the vacuum pump using VAL and NVAL. Furthermore, evacuation (i.e., the minimal pressure of -99.5 kPa) was reached faster by the vacuum pump with the NVALs, and the evacuation time could be reduced by 4.91% under optimal conditions. In addition, the vacuum pump with the NVALs exhibited superior overall effectiveness under relatively lower ambient temperatures.
The Compressive Strength of Slender C-shaped Cold-formed Steel Members with Web Openings
Dung M. Lue,Ping-Tsung Chung,Jui-Ling Liu,Chi-Ling Pan 한국강구조학회 2009 International Journal of Steel Structures Vol.9 No.3
This study investigated the compressive strength of slender C-shaped cold-formed steel members with web openings. The effective sectional area concept was adopted to conduct the analysis of cold-formed compressive members. The load-carrying capacity of compression member was calculated based on the sectional effective width as described in the AISI Standard. The study tested a total of 21 channel specimens including C-shaped cross-sections with and without web openings. Comparisons were made between the test results and the predictions based on both the AISI Standard and the ANSYS analysis. The results indicated that all the observed failure modes were of the flexural-torsional buckling classification. It was found that the reduction in the compression strength of the specimens with web openings seems to be negligible. In addition, the predictions based on the AISI Standard were conservative as compared with the test results of the specimens with web openings. Moreover, it appeared that the ANSYS finite element analysis was able to predict the ultimate loads and failure modes of the specimens. In the absence of test data and for the purpose of preliminary design, the ANSYS appears to provide quite an encouraging prediction capability. This study investigated the compressive strength of slender C-shaped cold-formed steel members with web openings. The effective sectional area concept was adopted to conduct the analysis of cold-formed compressive members. The load-carrying capacity of compression member was calculated based on the sectional effective width as described in the AISI Standard. The study tested a total of 21 channel specimens including C-shaped cross-sections with and without web openings. Comparisons were made between the test results and the predictions based on both the AISI Standard and the ANSYS analysis. The results indicated that all the observed failure modes were of the flexural-torsional buckling classification. It was found that the reduction in the compression strength of the specimens with web openings seems to be negligible. In addition, the predictions based on the AISI Standard were conservative as compared with the test results of the specimens with web openings. Moreover, it appeared that the ANSYS finite element analysis was able to predict the ultimate loads and failure modes of the specimens. In the absence of test data and for the purpose of preliminary design, the ANSYS appears to provide quite an encouraging prediction capability.
Numerical Evaluation on Warping Constants of General cold-Formed Steel Open Sections
Dung M. Lue,Jui-Ling Liu,Ching-Hau Lin 한국강구조학회 2007 International Journal of Steel Structures Vol.7 No.4
The calculation of warping constant (Cw) for an open thin-walled open section is a tedious and dificult task and thuspresenting an obstacle to routine design. Although Cw formulas and values for selective cold-formed steel sections are availablein the AISI design manuals, most practicing engineers have limited idea of evaluating the warping constants for sections notlisted in the AISI design manuals. This paper proposes a detailed step-by-step numerical procedure for evaluating the warpingconstant of a general open thin-waled section. Comparison shows virtualy no diference between the calculated values andthose listed in the AISI design manuals. The proposed procedure is a reliable and useful tool for computing the warping
Po-Yi Lue,Mark H. Oliver,Michel Neeff,Peter R. Thorne,Haruna Suzuki-Kerr 한국실험동물학회 2023 Laboratory Animal Research Vol.39 No.4
Sensorineural hearing loss (SNHL), caused by pathology in the cochlea, is the most common type of hearing loss in humans. It is generally irreversible with very few effective pharmacological treatments available to prevent the degenerative changes or minimise the impact. Part of this has been attributed to difficulty of translating “proof-of-concept” for novel treatments established in small animal models to human therapies. There is an increasing interest in the use of sheep as a large animal model. In this article, we review the small and large animal models used in pre-clinical hearing research such as mice, rats, chinchilla, guinea pig, rabbit, cat, monkey, dog, pig, and sheep to humans, and compare the physiology, inner ear anatomy, and some of their use as model systems for SNHL, including cochlear implantation surgeries. Sheep have similar cochlear anatomy, auditory threshold, neonatal auditory system development, adult and infant body size, and number of birth as humans. Based on these comparisons, we suggest that sheep are well-suited as a potential translational animal model that bridges the gap between rodent model research to the clinical use in humans. This is especially in areas looking at changes across the life-course or in specific areas of experimental investigation such as cochlear implantation and other surgical procedures, biomedical device development and age-related sensorineural hearing loss research. Combined use of small animals for research that require higher throughput and genetic modification and large animals for medical translation could greatly accelerate the overall translation of basic research in the field of auditory neuroscience from bench to clinic.