教育教学中的"拿来主义"

就如何灵活运用“拿来主义”充分应用网上资源,服务学生学习、成就教师教学、缩小教育公平差距等有关问题进行探讨。     

Polychlorinated dibenzo-p-dioxins and dibenzofurans in flue gas emissions from municipal solid waste incinerators in China

Polychlorinated dibenzo-p-dioxins and furalls(PCDD/Fs)emissions in flue gas from two types of municipal solid waste incinerators(MSWIs)most commonly used in China were investigated in this study.The selected incinerators include two grate-type MSWIs:MSWl-A(350 t/d)and MSWI-B(150 t/d),and two fluidized bed MSWIs:MSWI-C(400 t/d) and MSWI-D (400 t/d),which are all equipped with semi-dry lime scrubber and bag filter except MSWI-D equipped with cyclone and wet scrubber(WS)as air pollutant conffol device(APCD).Results indicated that the emission concentration and the international toxic equivalents(I-TEQs)of the PCDD/Fs from the stacks were in the range of 1.210～10.273 ng/Nm3 and 0.019～0.201 ngI-TEQ/Nm3,respectively.They were greatly lower than the emission regulation standard of PCDD/FS in China(1.0 ng I-TEQ/Nm3).However,only the PCDD/Fs emission Ievel from MSWI-C Was below 0.1 ng I-TEQ/Nm3.Although the homologue profiles were distinct,the contributions of the 2,3,7,8-subsituted congenem to the total I-TEQ were similar among all the investigated MSWIs.Two major 2,3,7,8-substituted congeners,2,3,4,7,8-PeCDF and 1,2,3,7,8-PeCDD,account for 47% and 9%(average values)of the total I-TEQ values,respectively.The correlation between PCDD/Fs levels and composition of flue gas Was also discussed.     

Polychlorinated dibenzo-p-dioxins and dibenzofurans in flue gas emissions from municipal solid waste incinerators in China

Polychlorinated dibenzo-p-dioxins and furans （PCDD/Fs） emissions in flue gas from two types of municipal solid waste incinerators （MSWIs） most commonly used in China were investigated in this study. The selected incinerators include two grate-type MSWIs： MSWI-A （350 t/d） and MSWI-B 050 t/d）, and two fluidized bed MSWIs： MSWI-C （400 t/d） and MSWI-D （400 t/d）, which are all equipped with semi-dry lime scrubber and bag filter except MSWI-D equipped with cyclone and wet scrubber （WS） as air pollutant control device （APCD）. Results indicated that the emission concentration and the international toxic equivalents （I-TEQs） of the PCDD/Fs from the stacks were in the range of 1.210-10.273 ng/Nm^3 and 0.019-0.201 ng I-TEQ/Nm^3, respectively. They were greatly lower than the emission regulation standard of PCDD/Fs in China （1.0 ng I-TEQ/Nm^3）. However, only the PCDD/Fs emission level from MSWI-C was below 0.1 ng I-TEQ/Nm^3. Although the homologue profiles were distinct, the contributions of the 2,3,7,8-subsituted congeners to the total I-TEQ were similar among all the investigated MSWIs. Two major 2,3,7,8-substituted congeners, 2,3,4,7,8-PeCDF and 1,2,3,7,8-PeCDD, account for 47% and 9% （average values） of the total I-TEQ values, respectively. The correlation between PCDD/Fs levels and composition of flue gas was also discussed.     

报道性标题的求简动因所形成的双音节动词搭配分析

汉语中双音节动词的搭配现象越来越受到人们的关注,而且大量地出现在新闻标题中。报道性新闻标题具有概括功能,其语言有很强的紧凑性,它通过成分删减、句式变换等方法实现了标题中双音节动词的搭配组合。通过对新闻内容中的语言向具有报道性标题转换过程的分析,指出标题语体中双音节动词搭配现象的一些特征。     

课堂教学表现性评价的行动审思:澳大利亚师范生从教能力测评的特色透析

2019年,澳大利亚要求全国的教师教育机构在师范生的毕业年实施从教能力测评,测评结果作为评定师范生毕业的必备条件.该政策以国家行政指令为核心策动,以教师教育院校大学联盟为实施主体,聚焦课堂情境来促进指向深度学习的课堂表现性评价.它利用评价规则引导师范生进行自我主导的深度学习和反思,进而提升课堂教学的专业知识与实践能力,从源头上提高师范生的教学专业化程度.     

七十年来中学生物学课程中有关“传染病”内容的分析及启示

本文梳理了生物学课程中"传染病"内容变迁的历程,发现"传染病"发病的原因、传播途径和预防措施始终是教学重点。提出夯实"传染病"内容、充分开发与利用多种课程资源,加强爱国主义教育、开展生命教育等建议,以充分发挥"传染病"内容的教育价值。     

以专业评估促进地方院校土建类专业建设

以专业评估为导向促进专业建设,是地方高校土建类专业快速提高专业建设水平的有效途径,也是执业注册工程师培养的基本要求。正确认识专业评估,把握专业评估与专业建设的关系,是以评促建的关键。本文结合地方院校土建类专业建设的经验,就地方院校如何以专业评估促进专业建设作一探讨。     

英国大学内部管理制度的研究与借鉴

建设科学、有效的内部管理制度,对形成大学竞争力具有重要意义。突破传统官僚制体系,建设适宜基层学术组织发展的制度环境,形成智力资本的集聚和以科研为导向的知识创新模式,是英国大学内部管理体制变化的新特点。借鉴英国的经验,我国应继续推进高校依法自主办学,发挥政府在大学资源配置方面的引导作用,进一步推动学校内部教学科研机构的整合。     

Efficient volume preserving approach for skeleton-based implicit surfaces

This paper presents an efficient way to preserve the volume of implicit surfaces generated by skeletons. Recursive subdivision is used to efficiently calculate the volume. The criterion for subdivision is obtained by using the property of density functions and treating different types of skeletons respectively to get accurate minimum and maximum distances from a cube to a skeleton. Compared with the criterion generated by other ways such as using traditional Interval Analysis, Affine Arithmetic, or Lipschitz condition, our approach is much better both in speed and accuracy.