Student Evaluations as Effective Indicators of Learning Outcomes:Evidence from Japanese University Students in English Language Courses

The term"student learning outcomes"refers to the knowledge, skills, and abilitiesthat students achieve during a course, and is typically assessed based on student evaluations conducted at the end of the semester. Previous studies in this area have investigated the effects of instructional quality and academic demands separately and have been limited primarily to examining findings using student samples fromthe United States. With Japanese college students' perceptions of self-improvementin English language courses as the dependent variable, the present study directly tests the hypothesis that students who perceive instructional quality to be higher, andcourse demands to be greater, also estimate higher levels of self-improvement in English language skills. The analysis provides strong support for this hypothesis.Higher ratings of instruction and academic demands have already beenshown to increase levels of student learning(Greimel-Fuhrmann and Geyer 2003;Nois and Hudson 2006; Mc Fadden and Dart 1992). The present study is the first toprovide direct evidence of the relative importance of student evaluations ofinstructional quality and academic demands as predictors of student learning and thefirst ever to do so with a sample of Japanese college students enrolled in a required English as a foreign language course. Our hypothesis is that Japanese students whoperceive instructional quality to be higher, and course demands to be greater,estimate higher levels of self-improvement in English language skills. Thus we test Japanese students' attitudes toward instructional quality and course demands asindependent variables predicting their perceptions of self-improvement in English language courses. The research focuses on Japanese students' improvement in English language skills because English education in Japan is an arena in which thedebate over limited English proficiency rages on, and because other research suggests reconsideration of English education in light of the demands of the rapidly expanding global era(Amaki 2008).

Research on the evaluation and mechanism of socio-economic benefit of highway projects

Based on the theory of system dynamics, the paper analyzes the mechanism of socio-economic benefits of highway projects and establishes the system dynamics model of regional economic-highway development. Then taking Jinji（Tianjin--Jixian） Highway of Tianjin as an example, the errors of system simulation are tested, and the system dynamics model built is verified to be quite stable, which has a high performance. Through the comparison of simulation results with and without Jinji Highway, the paper simulates and predicts the socio-economie benefit of each year from 2003 to 2013. Thus the quantification evaluation of socio-economic benefit of highway project is realized and will provide the theory instructions for similar projects in the future.

Evaluation of E-commerce Poverty Alleviation Effect in the Context of Rural Revitalization Strategy

The industrial prosperity proposed in the overall requirement of rural revitalization strategy in the Report of the 19th National Congress is the cornerstone of rural development. E-commerce poverty alleviation is an effective way of poverty alleviation in recent years. This paper mainly explored the factors influencing the rural e-commerce poverty alleviation and the evaluation of poverty alleviation effects,in order to come up with countermeasures and recommendations to provide assistance and guidance for the use of e-commerce to achieve poverty alleviation and accordingly to revitalize the rural industry. Firstly,using the literature research method,it proposed four level Ⅰ indicators influencing the e-commerce poverty alleviation,and designed a detailed level Ⅱ indicator system under each dimension. Then,the questionnaire survey method was employed to collect data for SPSS analysis to verify whether the designed indicator system is correct. Finally,it analyzed the problem of the current stage of e-commerce poverty alleviation by means of the quadrifid graph,and came up with corresponding countermeasures on the basis of the four key levek I factors.

Research on the Performance Evaluation and Advancing Path of Henan Agricultural Products E-marketing

Given that the traditional marketing management of agricultural products has been unable to meet the diversified demands of market, and the network has been applied to the marketing field of agricultural products,the research on the performance evaluation and advancing path of Henan agricultural products E-marketing is more important than before. Based on current problems of Henan agricultural products E-marketing,a system of performance evaluation is established,which covers website building and maintenance and other four first-class indexes as well as profit ratio of sales and other thirteen second-class indexes,and then the system is evaluated by comprehensive evaluation method. Meanwhile,it is explored to discuss how to further advance Henan agricultural products E-marketing.

Construction of an evaluation system for the service capabilities of government to business (G2B) web portals

On the basis of analyzing both domestic and foreign evaluation systems for the e-government and also taking into account of the current situation of government portals in urban centers,the paper is aimed to construct an evaluation system primarily for the measurement of the service capability of business-oriented G2B portals of local governments in general and those G2B portals of the new development zones in particular.This system is composed of 6 first tier indicators,18 second tier indicators and 90 third tier indicators.And the weight of each indicator is determined by Delphi Method and Analytic Hierarchy Process(AHP) Method.Subsequently,we used this system to evaluate the government portals of Tianjin Binhai New Area and Shanghai Pudong New Area and proved to have the desired practicability.

Evaluation and Comparison Research on the Support of Websites to Enterprise's E-Commerce

This paper comparatively analyzes the existing evaluation index of websites, and puts forward the evaluation index and method about the support of a website to enterprise's e-commerce. Through researching on 56 super enterprises of information industry in Sichuan province, throughout China and the world, analyzing and comparatively studying the support ability of a website to an enterprise's e-commerce, this paper brings forward using five levels to categorize the support ability of a website to enterprise's e-commerce. In the end, the flaw of enterprise's e-commerce practice in Sichuan province and corresponding countermeasure will be illustrated.

ECT2和E2F1蛋白在乳腺癌中的表达及临床意义

目的探讨ECT2和E2F1蛋白在乳腺癌中的表达并分析其临床意义。方法应用免疫组织化学En Vision法检测在山西医科大学第一医院病理科收集的133例乳腺癌和80例正常乳腺组织中ECT2和E2F1蛋白的表达情况。结果ECT2和E2F1蛋白在乳腺癌中的阳性表达率分别为55.6%和74.4%,二者分别与正常组织(8.8%和2.5%)比较,差异有统计学意义(P<0.05);ECT2和E2F1蛋白表达与患者年龄、肿瘤大小及肿瘤类型无关(P>0.05),与肿瘤分级、淋巴结转移及TNM分期有关(P<0.05)。相关性分析显示,ECT2和E2F1蛋白在乳腺癌中的表达呈显著正相关性(r=0.344,P<0.05)。结论 ECT2和E2F1蛋白表达在乳腺癌的发生发展过程中相互之间存在一定的作用,ECT2在乳腺癌中的作用可能受E2F/RB信号通路的调控,二者共同表达对评估患者预后有一定的价值。

HBV vaccine efficacy and detection and genotyping of vaccineé asymptomatic breakthrough HBV infection in Egypt

AIM:To evaluate the impact of mass vaccination against the hepatitis B virus (HBV) in Egypt,and to search for vaccinee asymptomatic breakthrough HBV infection and its genotype.METHODS:Seven hundred serum samples from vaccinated children and adults (aged 2-47 years) were used for quantitative and qualitative detection of HBsAb by ELISA.Three hundred and sixty serum samples representing undetectable or low or high HBsAb were screened for markers of active HBV infection (HBsAg,HBcAb (IgG) and HBeAb by ELISA,plus HBsAg by AxSYM) and HBV-DNA genotyping by nested multiplex PCR and by DNA sequencing.RESULTS:It was found that 65% of children aged 2-4 years,and 20.5% aged 4-13 years,as well as 45% adults were good responders to HBV vaccination mounting protective level HBsAb.Poor responders were 28%,59.5% and 34%,and non-responders were 7%,20% and 21% respectively,in the three studied groups.Markers of asymptomatic HBV infections were HBsAg detected by ELISA in 2.5% vs 11.39% by AxSYM.Other markers were HBcAb (IgG) in 1.38%,HBeAb in 0.83%,and HBV-DNA in 7.8%.All had HBV genotype E infection.CONCLUSION:It is concluded that HBV vaccine is efficient in controlling HBV infection among children and adults.The vaccine breakthrough infection was by HBV genotype E.A booster dose of vaccine is recommended,probably four years after initial vaccination.

Promising application of a new ulnar nerve compound muscle action potential measurement montage in amyotrophic lateral sclerosis:a prospective cross-sectional study

Previous studies have shown that ulnar nerve compound muscle action potential recorded by the conventional“belly-tendon”montage does not accurately and completely reflect the action potential of the ulnar nerve dominating the abductor digiti minimi muscle due to the effects of far-field potentials of intrinsic hand muscles.A new method of ulnar nerve compound muscle action potential measurement was developed in 2020,which adjusts the E2 electrode from the distal tendon of the abductor digitorum to the middle of the back of the proximal wrist.This new method may reduce the influence of the reference electrode and better reflect the actual ulnar nerve compound muscle action potential.In this prospective cross-sectional study,we included 64 patients with amyotrophic lateral sclerosis and 64 age-and sex-matched controls who underwent conventional and novel ulnar nerve compound muscle action potential measurement between April 2020 and May 2021 in Peking University Third Hospital.The compound muscle action potential waveforms recorded by the new montage were unimodal and more uniform than those recorded by traditional montage.In the controls,no significant difference in the compound muscle action potential waveforms was found between the traditional montage and new montage recordings.In amyotrophic lateral sclerosis patients presenting with abductor digiti minimi spontaneous activity and muscular atrophy,the amplitude of compound muscle action potential-pE2 was significantly lower than that of compound muscle action potential-dE2(P<0.01).Using the new method,damaged axons were more likely to exhibit more severe amplitude decreases than those measured with the traditional method,in particular for patients in early stage amyotrophic lateral sclerosis.In addition,the decline in compound muscle action potential amplitude measured by the new method was correlated with a decrease in Revised Amyotrophic Lateral Sclerosis Functional Rating Scale scores.These findings suggest that the new ulnar nerve compound muscle action potential measurement montage reduces the effects of the reference electrode through altering the E2 electrode position,and that this method is more suitable for monitoring disease progression than the traditional montage.This method may be useful as a biomarker for longitudinal follow-up and clinical trials in amyotrophic lateral sclerosis.

Electroviscous effect on electromagnetohydrodynamic flows of Maxwell fluids in parallel plate microchannels

Considering the influence of the streaming potential and electroviscous effects, the analytical solutions for electromagnetohydrodynamic (EMHD) flows in parallel plate microchannels are obtained. The electrolyte solutions in the microchannels are taken as generalized Maxwell fluids, and slip boundary conditions are adopted. To accurately analyze the EMHD flow characteristics, the variation trends of the electroviscous effects with the corresponding parameters must be understood. The results show that the electroviscous effects increase with the increase in the relaxation time De, the slip coefficient , and the wall zeta potential 0. However, the increase in the inverse of the electrical double-layer (EDL) thickness K, the electrical oscillating Reynolds number Re, and the ionic P'eclet number Pe can decrease the electroviscous effects. We also demonstrate that the electroviscous effect on the EMHD flows of generalized Maxwell fluids is larger than that of Newtonian fluids. This work will be useful in designing EMHD flows in parallel plate microchannels.

国内B2C出口跨境电商平台卖家用户满意度研究——以Temu平台为例

随着产业结构升级、电子信息技术发展和境外消费者需求激增,国内B2C出口跨境电子商务平台迎来了新的发展机遇。基于平台政策机制、平台服务、卖家经营绩效、平台流量与分发4个维度构建的卖家用户满意度评价体系,为研究国内B2C出口跨境电子商务平台经营发展方向提供了新的思路。拼多多跨境电商平台Temu近两年发展迅猛,一跃成为美国头部电商网站,具有很强的代表性。结合AHP-Fuzzy法,对其卖家用户满意度进行实证研究后发现,完善物流仓储模式、优化平台活动策略、调整托管模式与报价规则以及制定合理的退货罚款政策是目前国内B2C出口跨境电子商务平台必须高度重视的工作。这一研究为国内B2C出口跨境电子商务平台卖家用户满意度研究领域研究提供参考。

基于电子鼻与HS-SPME-GC-MS技术的武夷茶区3种茶叶籽油挥发性香气成分的比较分析

以武夷茶区3种茶叶籽油为研究对象,首先采用定量描述分析法(QDA)对3种茶叶籽油的感官属性进行了分析,然后利用顶空固相微萃取气相色谱-质谱联用技术(HS-SPME-GC-MS)结合电子鼻(E-nose)对其挥发性香气成分进行了区分和比较。结果表明,不同品种茶叶籽油在多个感官属性上差异明显,E-nose可有效区分3种茶叶籽油,GC-MS在3种茶叶籽油中共检测出52种挥发性香气成分,并采用香气活力值(OAV)确定了3种茶叶籽油的关键香气物质,3种茶叶籽油香气成分和关键香气物质的组成、含量各不相同。研究结果可为不同品种茶叶籽油的品种鉴别提供一定的理论依据。

Systematic Evaluation of Guidelines for the Diagnosis and Treatment of Hepatitis E Virus Infection

Background and Aims:The hepatitis E virus(HEV)is a zoonotic disease,and infection with HEV in humans primarily causes acute infections and can progress to chronic manifestation in immunocompromised individuals.Over the past decade,guidelines for diagnosing and treating HEV infection have been developed.This study aimed to systematically assess the quality of current guidelines for diagnosing and treating HEV infection,and we analyzed the differences in guideline quality and primary recommendations and explored possible reasons for these differences.Methods:Guidelines published between 2013 and 2022 were searched,and studies were identified using selection criteria.The study assessed the quality of the included guidelines using the Appraisal of Guidelines for Research and Evaluation tool,extracted the primary recommendations in the guidelines,determined the highest level of evidence supporting the recommendations,and reclassified the evidence using the Oxford Centre for Evidence-Based Medicine grading system.Results:Seven guidelines were included in the final analysis.The quality of the guidelines varied widely.The discrepancies may have been caused by the lack of external experts,the failure to consider influencing factors in guideline application,and the lack of consideration of the public’s opinion.Analysis of the heterogeneity in primary recommendations revealed differences in algorithms for managing chronic HEV infection,the dosage of ribavirin,and a low level of evidence supporting the primary recommendations.Conclusions:Guideline quality and primary recommendations vary considerably.Refinement by guideline developers and researchers would facilitate updating and applying guidelines for diagnosing and treating HEV infection.

“BOPPPS+E”教学模式在《药剂学》课程中的应用

目的研究“BOPPPS+E”教学模式在《药剂学》课程中的实践和应用。方法选取新疆第二医学院的学生作为研究对象,在《药剂学》课程中使用“BOPPPS+E”教学模式和传统教学模式,使用综合测评的方式对两个教学模式进行对比。结果相较于传统教学模式,“BOPPPS+E”教学模式既可有效强化学生在课堂的互动性和参与性,综合测评成绩提高,还可以辅助教师教学,提升教师的教学水平。结论“BOPPPS+E”教学模式在《药剂学》课程的实际运用中取得了良好教学效果,为其他专业有关课程的教学改革提供了理论依据和实践参考。

基于属性层次模型的重症感染患者硫酸多黏菌素E应用合理性评价

目的建立重症感染患者硫酸多黏菌素E的合理性评价标准,并采用属性层次模型(AHM)综合评价硫酸多黏菌素E临床应用的合理性。方法以硫酸多黏菌素E药品说明书、相关临床指南或专家共识为依据,制订硫酸多黏菌素E合理性评价标准。采用AHM对2021年1月~2022年12月江苏省苏北人民医院75例应用硫酸多黏菌素E的重症感染患者的归档病历进行评价分析。结果硫酸多黏菌素E的临床应用主要存在溶媒选择不适宜、长疗程用药及联合用药不合理等不合理问题。病历得分(MRS)<80分的26例(35%),80≤MRS<85分的6例(8%),85≤MRS<90分的20例(27%),MRS≥90分的23例(31%),病例平均得分为82.86分。结论该院硫酸多黏菌素E药品使用合理性欠佳,需加强日常管理以提高其使用安全性和有效性。具有结果量化特点的属性层次模型,为药物合理性评价开发出新方法,并保证其评价的系统性、可行性与科学性。

基于EVA-BS模型下电商企业价值评估

随着网络的快速发展,大多数人们都在网络中畅行,淘宝、京东、天猫等各大电商平台炙手可热,使得互联网与我国社会的发展息息相关。文章通过之前学者对互联网的研究,概括分析出互联网电商行业的特点以及发展的难点困点,总结出运用常用的评估方法对电商行业进行价值评估时的弊端,并提出运用EVA和B-S模型对企业进行价值评估,从而发现更好的企业价值评估方法来对电商行业进行评估,为投资者提出更加合理且正确的有关企业价值的建议。

维生素E的生物学功能和安全性评价研究进展

维生素E是机体重要的脂溶性维生素,具有抗氧化、维持生育和调节免疫系统等诸多生物学功能。多数研究表明维生素E毒性较低,但高剂量的维生素E可引起机体内其他脂溶性维生素的缺乏,同时对免疫效果产生不利影响。本文对维生素E的生物学功能、吸收代谢特点和安全性评价进行了综述,旨在为在动物上制订维生素E的安全限量提供理论参考。

基于Pro/EManikin的拖拉机驾驶室人机工程评价方法

人机工程学设计是拖拉机驾驶室设计中非常重要的部分。该文以确定的H点为参考,运用人机工程学设计原则,对拖拉机驾驶室的驾驶员座椅和各操纵装置进行了布局和设计,并建立了驾驶室的Pro/E三维模型,运用Pro/EManikin模块对驾驶员的坐姿舒适性、驾驶员视野性能、驾驶员的操作空间3个方面进行仿真和评价。结果表明,原设计方案中无法同时满足对各操纵装置的舒适性。对驾驶室优化布局和设计,首先,H点位置在X方向的坐标位置为550和581mm时,分别调用第5百分位和第95百分位的中国男性人体模型进行分析,各操纵装置在操纵舒适性的RULA分析分数为1时,方向盘、变速杆、侧控台和前控台距踵点水平距离范围分别为290～352、366～437、375～420和128～213mm。其次,通过Pro/EManikin中到达包络的阴影区域检查操作空间是否符合要求。最后,在进行驾驶室设计过程中,将消音器和空气滤清器的位置设计在前立柱对驾驶员形成的盲区范围内,将水平面前方2个不可避免的盲区(12.81°和14.36°)叠加,最大程度的减小了驾驶员的盲区。优化设计后的驾驶舒适性、视野性能及易操作性在一定程度上都得到了改善。该方法为拖拉机驾驶室人机工程学设计提供了一定的参考。

基于文本挖掘的e-Learning学习评价研究

在e-Learning系统中,对学生学习的评价难以进行。在分析e-Learning环境下学习评价特征的基础上,本文引入电子学档评价方法,提出将文本挖掘技术运用于学习评价,依据学生学习评价量规,实现对学生学习过程的评价。

外文电子图书学术影响力评价方法探讨——基于BKCI、Scopus Article Metrics、Bookmetrix的实例比较

[目的/意义]对电子图书的学术影响力进行评价,可以提高馆藏电子图书的利用率,并为高校图书馆外文电子图书的采购提供参考依据。[方法/过程]针对外文电子图书的特点,介绍了BKCI、Scopus Article Metrics和Bookmetrix 3种外文电子图书学术影响力评价工具,并根据西南交通大学学科特色,分别对3种工具进行实例分析。[结果/结论]发现3种工具各有优缺点,建议高校图书馆进行电子图书学术影响力评价时采用多种方法进行多维度评价。