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A project-based learning approach: a case study in China
Yueyu Xu 서울대학교 교육연구소 2010 Asia Pacific Education Review Vol.11 No.3
The goal of higher education is to cultivate graduates' creative capability, critical thinking skills, and other professional qualities. This paper describes a project-based course and its application in graduate-level education. This course is to improve students' creative capability, collaboration capability, and self-direction. It includes many new elements such as project-oriented, up-to-date textbooks and research results, and peer-review grading systems. Compared with conventional courses, the evidence suggests that the project-based learning approaches used in this study will be quite successful for providing postgraduate students with more autonomy and creative learning experience.
A Privacy-preserving Data Aggregation Scheme with Efficient Batch Verification in Smart Grid
( Yueyu Zhang ),( Jie Chen ),( Hua Zhou ),( Lanjun Dang ) 한국인터넷정보학회 2021 KSII Transactions on Internet and Information Syst Vol.15 No.2
This paper presents a privacy-preserving data aggregation scheme deals with the multidimensional data. It is essential that the multidimensional data is rarely mentioned in all researches on smart grid. We use the Paillier Cryptosystem and blinding factor technique to encrypt the multidimensional data as a whole and take advantage of the homomorphic property of the Paillier Cryptosystem to achieve data aggregation. Signature and efficient batch verification have also been applied into our scheme for data integrity and quick verification. And the efficient batch verification only requires 2 pairing operations. Our scheme also supports fault tolerance which means that even some smart meters don’t work, our scheme can still work well. In addition, we give two extensions of our scheme. One is that our scheme can be used to compute a fixed user’s time-of-use electricity bill. The other is that our scheme is able to effectively and quickly deal with the dynamic user situation. In security analysis, we prove the detailed unforgeability and security of batch verification, and briefly introduce other security features. Performance analysis shows that our scheme has lower computational complexity and communication overhead than existing schemes.
Yueyue Hao,Nan Zhang,Jing Luo,Xiaoya Liu 성균관대학교(자연과학캠퍼스) 성균나노과학기술원 2018 NANO Vol.13 No.1
In this work, a facile, environmental-friendly and cost-effective method was developed to prepare silver nanoparticles (Ag NPs) in aqueous solution at room temperature. In our approach, tannic acid was employed as the reducing agent and stabilizer simultaneously, avoiding the usage of any toxic agent. The tannic acid derived silver nanoparticles (TA-Ag NPs) were fully characterized by UV-Vis spectroscopy, X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), transmission electron microscopy (TEM) and thermogravimetric analyzer (TGA). The particle size of the synthesized TA-Ag NPs is tunable from 6.5 nm to 19.2nm with narrow distribution by varying the molar ratio of TA to silver precursor. Efficient reduction of methylene blue (MB) catalyzed by TA-Ag NPs was observed, which was dependent upon the particle size of TA-Ag NPs or the TA concentration used for synthesis. By optimizing the TA concentration, complete reduction of MB was accomplished by TA-Ag NPs within 8 min. The high catalytic activity of TA-Ag NPs was attributed to their nanosize and good dispersity as well as the electrostatic interaction between TA and MB which induces rapid enrichment of MB towards TA-Ag NPs, creating a locally concentrated layer of MB. Considering the facile and environmental-friendly preparation procedure and excellent catalytic activity, TA-Ag NPs are green, efficient and highly economical candidates for the catalysis of organic dyes and extendable of other reducible contaminants as well.
Yueyue Guan,Guohua Tang,Lei Li,Jianzhong Shu,Yuhua Zhao,Li Huang,Jun Tang 대한약학회 2024 Archives of Pharmacal Research Vol.47 No.2
The gut microbiota that exists in the human gastrointestinal tract is incredibly important for the maintenance of general healthas it contributes to multiple aspects of host physiology. Recent research has revealed a dynamic connection between the gutmicrobiota and the central nervous system, that can infl uence neurodegenerative diseases (NDs). Indeed, imbalances in thegut microbiota, or dysbiosis, play a vital role in the pathogenesis and progression of human diseases, particularly NDs. Herbalmedicine has been used for centuries to treat human diseases, including NDs. These compounds help to relieve symptomsand delay the progression of NDs by improving intestinal barrier function, reducing neuroinfl ammation, and modulatingneurotransmitter production. Notably, herbal medicine can mitigate the progression of NDs by regulating the gut microbiota. Therefore, an in-depth understanding of the potential mechanisms by which herbal medicine regulates the gut microbiotain the treatment of NDs can help explain the pathogenesis of NDs from a novel perspective and propose novel therapeuticstrategies for NDs. In this review, we investigate the potential neuroprotective eff ects of herbal medicine, focusing on itsability to regulate the gut microbiota and restore homeostasis. We also highlight the challenges and future research prioritiesof the integration of herbal medicine and modern medicine. As the global population ages, access to this information isbecoming increasingly important for developing eff ective treatments for these diseases.
沈月月(Yueyue Shen),罗雪燕(Xueyan Luo),袁泉(Quan Yuan) 아시아사회과학학회 2022 International Science Research Vol.2 No.2
目的:分析带量采购对中选与非中选抗高血压类药品的使用影响,为政策制定及医院合理用药提供参考。方法:以抗高血压药为例,采用实证研究对某院带量采购实施前后一年的数量、金额、用药频度(DDDs)、日均费用(DDC)、仿制药替代率及费用节省等情况进行比较分析。结果:实施带量采购后,抗高血压类药品总体使用量上升 18.60%,销售额下降 7.71%,仿制药对原研药的替代率为 65.07%,潜在节省费用 489.44万元,较带量前实际节省费用 545.78 万元。结论:带量采购实施后,仿制药中选品种呈价减量增的趋势,对原研药的替代率有显著提升,极大缓解了高血压类疾病患者用药负担。 Objective: To analyze the influence of the volume-based procurement policy on the use of antihypertensive and to provide reference for policy formulation and rational drug use in hospital. Methods: Take antihypertensive for examples, empirical approach was used to analyze sales amount, sales volume, generics substitution rate etc., comparing the policy before and after implementation. Results: After the implementation of the volume-based procurement policy, the overall use of antihypertensive drugs increased by 18.60%, and sales fell by 7.71%. Under the effect of the same curative efficacy, the substitution rate of generic drugs for the original drugs was 65.07%, and the potential cost saving was 4.89 million yuan, which is 5 457 800 yuan in actual cost savings compared with before the implementation of the volume-based procurement policy. Conclusion: After the implementation of volume-based procurement policy, the selected varieties of generic drugs showed a trend of decreasing prices and increasing volume, significantly increasing the replacement rate of original research drugs, which effectively alleviated the burden of medication for patients with hypertensive diseases.
Xiaoqin Sun,Yueyu Hang,Yanglian Wei,Minjian Qin,Qiaosheng Guo,Jianlin Guo,Yifeng Zhou 대한약학회 2012 Archives of Pharmacal Research Vol.35 No.4
The rDNA ITS region of 18 samples of Changium smyrnioides from 7 areas and of 2 samples of Chuanminshen violaceum were sequenced and analyzed. The amplified ITS region of the samples, including a partial sequence of ITS1 and complete sequences of 5.8S and ITS2, had a total length of 555 bp. After complete alignment, there were 49 variable sites, of which 45 were informative,when gaps were treated as missing data. Samples of C. smyrnioides from different locations could be identified exactly based on the variable sites. The maximum parsimony (MP) and neighbor joining (NJ) tree constructed from the ITS sequences based on Kumar’s two-parameter model showed that the genetic distances of the C. smyrnioides samples from different locations were not always related to their geographical distances. A specific primer set for Allele-specific PCR authentication of C. violaceum from Jurong of Jiangsu was designed based on the SNP in the ITS sequence alignment. C. violaceum from the major genuine producing area in Jurong of Jiangsu could be identified exactly and quickly by Allele-specific PCR.