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Fu, Yuan Chih,Chen, Sheng Lee,Quetzal, Amelio Salvador,Lee, Hsiu Ming,Lin, Yi Hua 서울대학교 교육연구소 2022 Asia Pacific Education Review Vol.23 No.3
This study investigated the growth trajectory of academic achievement in Math and English among 519 students in a vocational senior high school in Taiwan. Covering the complete individual learning profile, our dataset included pre-enrollment variables, periodic test scores, and college entrance examination scores. We employed a group-based trajectory model that identified three homogenous subgroups with distinct trajectories of academic achievement in Math and English and demonstrated baseline predictive factors associated with these trajectories as well as relationships between different trajectories and students’ college entrance examination scores. Our analysis contributes to the literature in two ways. First, this study demonstrates that when school practices focus on improving or remediating the performance of students in the low-achievement group, the obvious decrease in performance of those in the middle is ignored. Such finding indicates the need for inclusive or specialized practices that enhance the performance of students in all groups. Second, our analysis reveals that pre-enrollment academic preparation appears to be a strong predictor of later academic performance as noted through the reproduction of pre-enrollment academic performance in students’ college entrance examination scores. Therefore, upon enrollment, schools should start interventions that reflect the needs of different groups of students.
Yuan-Yuan HU,이양기,Wei-Lun Fu 한국아시아학회 2022 아시아연구 Vol.25 No.1
The 2020 COVID-19 pandemic has impacted the global development in economic, political, social and others, as well as promoting countries to reflect on the direction of economic transition. Post-pandemic green economic recovery has become the consensus of the global, but it puts pressure on the challenges to response to global climate change. Thus, the development of renewable energy represented by solar photovoltaic(PV) industry has once again received strong support from all countries. China has abundant solar energy resources and has listed the solar PV industry as one of the national strategic emerging industries. China's solar PV industry has developed rapidly in the past two decades. This article explains the relevant policy of solar PV industry guided by the 14th Five-Year Plan(FYP) as a benchmark and compares its with the 12th/13th FYP policies to show the status of solar PV industry development before and after COVID-19 in China. In addition, under the guidance of the 14th FYP policies, this paper further analyzes the challenges and explores the opportunities of China's solar PV industry development in the post-pandemic era. Finally, this article provides helpful insights for solving the challenges that exist on the pathway to China’s solar PV industry development during the 14th FYP period.
Stereo-digital image correlation in the behavior investigation of CFRP-steel composite members
Xiao-Yuan He,Yun-Tong Dai,Hai-Tao Wang,Tian-Yuan Ge,Gang Wu,Jian-Xiao Wan,Shuang-Yin Cao,Fu-Jun Yang 국제구조공학회 2017 Steel and Composite Structures, An International J Vol.23 No.6
The application of carbon fiber reinforced polymer (CFRP) in steel structures primarily includes two categories, i.e., the bond-critical application and the contact-critical application. Debonding failure and buckling failure are the main failure modes for these two applications. Conventional electrometric techniques may not provide precise results because of the limitations associated with single-point contact measurements. A nondestructive full-field measurement technique is a valuable alternative to conventional methods. In this study, the digital image correlation (DIC) technique was adopted to investigate the bond behavior and buckling behavior of CFRP-steel composite members. The CFRP-to-steel bonded joint and the CFRPstrengthened square hollow section (SHS) steel column were tested to verify the suitability of the DIC technique. The stereo- DIC technique was utilized to measure continuous deformation. The bond-slip relationship of the CFRP-to-steel interface was derived using the DIC data. Additionally, a multi-camera DIC system consisting of four stereo-DIC subsystems was proposed and applied to the compressive test of CFRP-strengthened SHS steel column. The precise buckling location and CFRP delamination of the CFRP-strengthened SHS steel column were identified. The experimental results confirm that the stereo-DIC technique can provide effective measurements for investigating the behaviors of CFRP-steel composite members.
( Hai-Fu Zheng ),( Fu-chang Huang ),( Bin Liu ),( Yuan-Yuan Shao ),( Pei-sheng Qin ) 한국균학회 2021 Mycobiology Vol.49 No.3
Two new species of Fulvifomes are described from specimens collected in rainforests of Nonggang Nature Reserve of southern China, based on morphological characteristics and molecular phylogenetic analysis of the internal transcribed spacer (ITS) and nuclear large subunit ribosomal DNA (nLSU) sequences. Fulvifomes nonggangensis sp. nov. is characterized by perennial, sessile and solitary basidiocarps, applanate pileus, small cystidioles of 9.9-15.4×2.9-3.5 lm, large pores of 5-6 per mm, a dimitic hyphal system, and broadly ellipsoid basidiospores of 4.3-5.3×3.3-4.2 lm. F. tubogeneratus sp. nov. is characterized by perennial, sessile, and imbricate basidiocarps, a duplex context, small pores of 7-8 per mm, a dimitic hyphal system, and ovoid to subglobose basidiospores of 5.72×5.00 lm.
Cheng, Fu-Yuan,Wan, Tien-Chun,Liu, Yu-Tse,Lai, Kung-Ming,Lin, Liang-Chuan,Sakata, Ryoichi Asian Australasian Association of Animal Productio 2008 Animal Bioscience Vol.21 No.5
This study developed a natural ingredient as a functional food possessing properties of attenuation of hypertension and cardiovascular hypertrophy. In a previous study hydrolysates obtained from chicken leg bone protein using Alcalase strongly inhibited angiotensin I converting enzyme (ACE) in vitro. In particular, hydrolysate (A4H) from four hours of incubation exhibited the highest ACE inhibitory activity (IC50 = 0.545 mg/ml). A4H was selected as a potent ACE inhibitor and orally administrated to spontaneously hypertensive rats (SHR) for eight weeks to investigate attenuating effects on age-related development of hypertension and cardiovascular hypertrophy. Results showed that treatment with A4H of SHRs attenuated the development of hypertension as effectively as the clinical antihypertensive drug captopril. Moreover, a significantly lower heart to body weight ratio and thinness of coronary arterial wall was observed in SHRs that had been treated with A4H or captopril. The results suggest that A4H can be utilized in developing an ACE inhibitor as a potential ingredient of functional foods to alleviate hypertension and cardiovascular hypertrophy.
Crack Resistance and Strength Properties of Red Clay Modified with Lignocellulose and Guar gum
Hong-Yuan Fu,Guang-Tao Yu,Qian-Feng Gao,Ling Zeng,Shuo-Peng Cao 대한토목학회 2023 KSCE Journal of Civil Engineering Vol.27 No.10
Desiccation cracking is a common problem of red clay under wet and dry conditions. The presence of cracks could reduce soil strength properties, which is the major reason for shallow failure of red clay slopes. This study aims to propose some additives to improve the crack resistance as well as the strength of red clay. To this end, three natural fibers and three natural gels were primarily selected to modify red clay. Desiccation crack tests were conducted to identify the best fiber and gel in terms of crack resistance. Then, direct shear tests and uniaxial tensile tests were performed on the soil specimens modified by the best fiber and gel to determine the optimal dosages regarding strength improvements. The results demonstrated that natural gels reduced the crack resistance of red clay, while natural fibers could enhance the crack resistance. Lignocellulose was the best additive in improving the crack resistance of red clay, and the modified effect was positively correlated with the fiber dosage. Adding 1.5% lignocellulose into red clay could reduce the crack rate from 2.19% to 0.30%, with a reduction of 0.86 times. The tensile strength, shear strength and its parameters of lignocellulose-modified red clay showed a trend of increasing first and then decreasing with increasing lignocellulose dosage. At the optimal lignocellulose dosage of 0.75%, the shear strength and tensile strength were increased by 44.63% and 18.21%, respectively. The strength of red clay modified by both lignocellulose and guar gum was positively correlated with the dosage of guar gum, and the desirable dosage of guar gum was 1.0%. In engineering practice, the wet red clay mixed with 0.75% lignocellulose and grass seeds can be employed as planting soil and is sprayed uniformly onto the slope surface after excavation using a spraying planting machine. To further improve the strength of the planting soil, 1.0% guar gum solution can be sprayed on the soil surface. The findings could provide useful guidance for the protection of red clay slopes.