The Empirical Study on the Face Validity of CET

Yinglin Liu 한국영어평가학회 2007 영어평가 Vol.1 No.1

This paper is an empirical study of the efficacy of China s large-scale national College English Test (CET), in testing students communicative competence. Since the focus of College-level English teaching in China has been shifting to communicative methodology, the question whether the CET is efficient in assessing students communicative competence is of great significance. This paper presents the results obtained from questionnaires and interviews held with the lecturers and students of Northeast Normal University (NENU), as far as the face validicy of the CET in testing students communicative competence is concerned. The questionnaires are comprised of closed questions and open-ended questions. The responses to the closed questions are tabulated and presented in bar graphs for a better visual effect, and analyzed in terms of frequency and percentage. The responses to the open-ended questions are presented in a descriptive manner. The results are analyzed from the perspective of content and format.

The first complete chloroplast genome of <i>Polygonatum hirtellum</i>: Genome features and phylogenetic relationships

LIAO Binbin,Jiamei ZHENG,LIU Rong,LIU Yinglin,LIU Xi,CHEN Xubing 한국식물분류학회 2024 식물 분류학회지 Vol.54 No.1

<i>Polygonatum hirtellum</i> is a perennial herb within the family Asparagaceae. In the present study, the chloroplast (cp) genome of <i>P. hirtellum</i> is reported for the first time, and its phylogenetic relationships are also investigated. The findings revealed that the cp genome was 155,697 bp and exhibited a typical quadripartite structure, consisting of a large single copy (84,468 bp), a small single copy (18,491 bp), and a pair of invert repeat sequences (26,369 bp). The GC content of the cp genomes amounted to 37.7%; 130 genes were identified, consisting of 84 protein-coding genes, 38 transfer RNA genes, and eight ribosomal RNA genes. A phylogenetic analysis based on the cp genome and coding sequence showed that <i>P. hirtellum</i> was a member of section <i>Verticillata</i> and could be distinguished from other species of the genus <i>Polygonatum</i> used in the analysis.

Transcriptome characterization and profiling related to detoxification enzyme genes in Chilo sacchariphagus (Lepidoptera Crambidae)

Liu Jianbai,Yi Jiequn,Wu Han,Lu Yinglin,Mao Yongkai,Lin Mingjiang,Li Jihu,An Yuxing 한국곤충학회 2022 Entomological Research Vol.52 No.9

Chilo sacchariphagus Bojeris is one of the most dangerous pests of sugarcane. The larvae damage the seedlings and stems of sugarcane and also harm sorghum, corn and other crops, which causes great economic losses to the sugar industry every year. Transcriptome sequencing and expression profile analysis of cytochrome P450 monooxygenase (CYP), carboxylesterase and glutathione S-transferase (GST) were carried out, which could provide a basis for drug resistance monitoring and drug resistance management of the pest. Unigenes of C. sacchariphagus were obtained by using the Illumina HiSeqTM 4,000 platform as 150 bp paired-end reads. A total of 173,013 unigenes were obtained after data assembly and redundancy removal. 28,330 unigenes were annotated based on multiple public databases, and the number of unigenes annotated by NR database was the largest. According to the transcriptome analysis, 214 candidate detoxification enzyme genes were identified, including 44 GSTs,138CYPs, and 32 CarEs. Phylogenetic analysis showed that the CYPs were mainly clustered in CYP4, CYP6, CYP9 and CYP12 subfamilies; CarEs mainly include antennal CarEs, venom CarEs and CarEs NOTUM; while the GSTs cluster mainly contains subfamilies such as delta, omega, epsilon, theta, zeta and sigma. In this study, transcriptome information of C. sacchariphagus was obtained, and genes related to detoxification were identified, which could provide data and a basis for the further study of detoxification and host plant adaptation mechanism of C. sacchariphagus.

Cathay Pacific’s Success Story: How did Cathay Pacific Maintain its Dominant Position and Acquire its Competitors?

Jiapei Liu,Yinglin Gu,Hazel Lee,Raymond Li Academy of Asian Business (AAB) 2018 Academy of Asian Business Review Vol.4 No.2

Cathay Pacific is the largest airline in Hong Kong and has maintained its dominant position for decades. As part of its competitive strategy, Cathay Pacific acquired several of its competitors. This study examines the impact of acquisitions and the relationship between each acquisition and Cathay Pacific’s success. The success factors and challenges subsequent to the acquisitions are critically analyzed and discussed, and implications for other companies are presented. The results show that acquisitions provide positive outcomes which contribute towards success factors; however, they are not without the unavoidable risks of entering a new market after the acquisition.

Comprehensive analysis of miRNAs, lncRNAs and mRNAs profiles in backfat tissue between Daweizi and Yorkshire pigs

Chen Chen,Yitong Chang,Yuan Deng,Qingming Cui,Yingying Liu,Huali Li,Huibo Ren,Ji Zhu,Qi Liu,Yinglin Peng Asian Australasian Association of Animal Productio 2023 Animal Bioscience Vol.36 No.3

Objective: Daweizi (DWZ) is a famous indigenous pig breed in China and characterized by tender meat and high fat percentage. However, the expression profiles and functions of transcripts in DWZ pigs is still in infancy. The object of this study was to depict the transcript profiles in DWZ pigs and screen the potential pathway influence adipogenesis and fat deposition, Methods: Histological analysis of backfat tissue was firstly performed between DWZ and lean-type Yorkshire pigs, and then RNA sequencing technology was utilized to explore miRNAs, lncRNAs and mRNAs profiles in backfat tissue. 18 differentially expressed (DE) transcripts were randomly selected for quantitative real-time polymerase chain reaction (QPCR) to validate the reliability of the sequencing results. Finally, gene ontology (GO) and Kyoto encyclopedia of genes and genomes (KEGG) enrichment analysis were conducted to investigate the potential pathways influence adipocyte differentiation, adipogenesis and lipid metabolism, and a schematic model was further proposed. Results: A total of 1,625 differentially expressed transcripts were identified in DWZ pigs, including 27 upregulated and 45 downregulated miRNAs, 64 upregulated and 119 down-regulated lncRNA, 814 upregulated and 556 downregulated mRNAs. QPCR analysis exhibited strong consistency with the sequencing data. GO and KEGG analysis elucidated that the differentially expressed transcripts were mainly associated with cell growth and death, signal transduction, peroxisome proliferator-activated receptors (PPAR), AMP-activated protein kinase (AMPK), PI3K-Akt, adipocytokine and foxo signaling pathways, all of which are strongly involved in cell development, lipid metabolism and adipogenesis. Further analysis indicated that the BGIR9823_87926/miR-194a-5p/AQP7 network may be effective in the process of adipocyte differentiation or adipogenesis. Conclusion: Our study provides comprehensive insights into the regulatory network of backfat deposition and lipid metabolism in pigs from the point of view of miRNAs, lncRNAs and mRNAs.

Research on Traffic Journey Intensity of Residents Based on Gravity Model

Ying Lin,Chunmei Zhong,Yong Liu 보안공학연구지원센터 2015 International Journal of Smart Home Vol.9 No.11

In order to accurately predict the traffic journey intensity of residents along the highway, according to the mechanisms of production of the traveling, analyze the influences of traffic journey intensity of residents from the three angles including residents' willingness to travel, destination’s attraction, traffic resistance, and predict the traveling intensity combined with the unconstrained gravity model. Then introduce the sensitivity of travel cost and analyze the impact of sensitivity of traveling cost on the traffic journey intensity. Finally, with an instance of the radiation areas of Zhaoma highway in Yunnan, calculate the calibration parameters in the unconstrained gravity model combined with the increase method and analyze the sensitivity of traveling cost within the scope of radiation areas. The results show that there is significant exponential relationship between the traffic journey intensity and the sensitivity, and it can provide some theoretical basis for the trip distribution; the gravity model is reliable and viable in some degree, and has a certain guiding significance for planning the road infrastructures.