计算机虚拟现实技术在高校体育教学中的应用探究

随着计算机网络的发展与素质教育的深入,虚拟现实技术逐渐在高校体育教育领域占据重要地位,显著提高了高校体育教学的质量与水平,有力地推动了高校体育教学的现代化发展。通过分析高校体育教学中运用虚拟现实技术的可行性,探索计算机虚拟现实技术在高校体育教学中的应用策略,以期使高校学生掌握更多的体育知识与技能,成为社会需要的优秀体育人才。     

高校体育教师师资建设长效机制研究

师资建设是学校进行各项教学的基础,体育教学也离不开师资建设的不断完善。体育教育一直是高校整体教育的薄弱环节,造成这种问题的重要原因之一就是师资建设不完善。本文深入分析高校体育教师师资建设的不完善问题,探讨如何建设高校体育教师师资的长效机制,从根本上解决高校体育教育不足的问题,加强高校体育的完善发展,促进高校学生的全面发展。     

现代高校体育教学改革中塑料体育用品的应用研究

<正>高校教育的重要内容之一就是体育教育。高校体育教育是提高大学生体育素养、强化大学生身心健康、培养大学生进取精神及合作精神等的重要抓手。进入新时代，随着我国高等教育普及率的提高、高校教育改革的深化，高校体育教学改革速度也不断加快，越来越多的高校根据时代发展的要求实施体育教学改革，以适合时代发展要求，更好地促进大学生身心健康。具有抗震能力强、密度小、质量轻、加工成型难度小等优点的塑料体育用品在现代高校体育教学改革中获得了极大的发展空间。     

现代网络信息技术在高校体育教育中的应用

随着社会的不断进步,我国经济也呈现出新的发展态势,现代网络信息技术也取得了显著的成就。现代网络信息技术给高校体育教育领域带来了发展机遇,为高校体育教学质量的提高提供技术支持。现代网络信息技术能将图片、文字和声音等结合起来进行知识的传播,这样既能丰富高校体育教育的教学内容,又能创新高校体育教育的教学方式,进而激发学生对体育运用知识与技能的学习兴趣,最终提高高校体育教学效果。本文重点研究现代网络信息技术在高校体育教育中的应用优势、应用现状,并进一步探讨现代网络信息技术在高校体育教育中的应用策略,旨在为高校体育教育改革提供理论参考。     

高校素质教育与课程考试改革

本文从素质教育的特点和当前高校课程考试存在的弊端分析入手，认为素质教育是高校教育的总目标。课程考试是实现这一目标的保障。并提出了高校课程考试改革的原则。     

基于媒体融合的高校学生党员理想信念教育路径探析

高校学生党员的理想信念教育正面临着媒体融合带来的极大挑战。根据对辽宁5所高校100名学生党员的调查结果分析,认为高校要通过创新整合党员理想信念教育优势资源,全面拓展媒体教育共享平台,完善教育管理机制,合理利用媒体融合发展新技术,来创新内容、拓展平台、完善制度、提升技术,全面推进高校学生党员理想信念教育。     

更新体育教学理念改革体育课程教学

本文针对当前我国国民整体身体素质的不良状况及高校传统体育课程教学的弊端，提出了高校体育必须树立“健康第一、终身体育、主体性教育和个性教育”等教育思想，同时阐述了我院在新的体育思想指导下进行体育课程教学改革的尝试和效果。     

化学实验室管理现状及改进方法

最近这些年教育改革不断推进,我国教育事业的改革所取得的成绩也越来越多。高等教育也是教育改革的一个主要的领域,通过一系列的改革也使得高等教育的教学质量有所提升,但从根本上而言,教学工作中有一些细节问题还值得推敲,这些问题会在一定程度上对高校的教学工作的开展产生制约。所以为促进高等教育改革事业的发展,还需要在具体的教学工作中根据现状来不断进行改进。医学高等专科学校主要负责培养医学领域的人才,在校内设有化学实验室,化学实验室的管理工作会对教学的成果产生直接影响。因此提升化学实验室的管理工作对促进高校的教学改革具有重要意义。     

构建大学女生和谐体育师生关系的探讨

通过文献资料法，研究如何构建大学女生和谐体育师生关系，对提高体育教学质量，培养女生的终身体育意识，进一步深化高校体育课程改革和全面推进全民健身计划具有重要意义．为此重点探讨了与大学女生构建和谐的体育师生关系的重要性及影响因素，并提出了构建大学女生和谐体育师生关系的具体措施．     

文化素质教育与专业素质教育融合路径

随着教育改革的不断深入,国内高校逐渐将教育重点转移到对学生的素质教育上来,文化素质教育首当成为各大高校素质教育的切入点。然而,应当明确的是,推进素质教育并非否定专业教育,切不可将素质教育同专业教育放在对立的位置上,而是应当两种教育相互贯通、相互融合,在专业教育的全程贯穿素质教育。在高等教育中通过两种教育的相互带动和相互促进,从整体上提高高校大学生的综合素质和专业能力。本文研究的目的就在于寻求探索两种教育的融合路径。     

Insect antifeedant properties of anthranoids from the genusVismia

Vismiones and ferruginins, representatives of a new class of lypophilic anthranoids from the genusVismia were found to inhibit feeding in larvae of species ofSpodoptera, Heliothis, and inLocusta migratoria.     

Direct observation of freeze-thaw instability of latex coatings via high pressure freezing and cryogenic SEM

Despite its industrial importance, the subject of freeze-thaw (F/T) stability of latex coatings has not been studied extensively. There is also a lack of fundamental understanding about the process and the mechanisms through which a coating becomes destabilized. High pressure (2100 bar) freezing fixes the state of water-suspended particles of polymer binder and inorganic pigments without the growth of ice crystals during freezing that produce artifacts in direct imaging scanning electron microscopy (SEM) of fracture surfaces of frozen coatings. We show that by incorporating copolymerizable functional monomers, it is possible to achieve F/T stability in polymer latexes and in low-VOC paints, as judged by the microstructures revealed by the cryogenic SEM technique. Particle coalescence as well as pigment segregation in F/T unstable systems are visualized. In order to achieve F/T stability in paints, latex particles must not flocculate and should provide protection to inorganic pigment and extender particles. Because of the unique capabilities of the cryogenic SEM, we are able to separate the effects of freezing and thawing, and study the influence of the rate of freezing and thawing on F/T stability. Destabilization can be caused by either freezing or thawing. A slow freezing process is more detrimental to F/T stability than a fast freezing process; the latter actually preserves suspension stability during freezing. Presented at the 82nd Annual Meeting of the Federation of Societies for Coatings Technology, October 27–29, 2004 in Chicago, IL. Tied for first place in The John A. Gordon Best Paper Competition.     

Ethanol and (−)-α-Pinene: Attractant Kairomones for Bark and Ambrosia Beetles in the Southeastern US

In 2002–2004, we examined the flight responses of 49 species of native and exotic bark and ambrosia beetles (Coleoptera: Scolytidae and Platypodidae) to traps baited with ethanol and/or (−)-α-pinene in the southeastern US. Eight field trials were conducted in mature pine stands in Alabama, Florida, Georgia, North Carolina, and South Carolina. Funnel traps baited with ethanol lures (release rate, about 0.6 g/day at 25–28°C) were attractive to ten species of ambrosia beetles (Ambrosiodmus tachygraphus, Anisandrus sayi, Dryoxylon onoharaensum, Monarthrum mali, Xyleborinus saxesenii, Xyleborus affinis, Xyleborus ferrugineus, Xylosandrus compactus, Xylosandrus crassiusculus, and Xylosandrus germanus) and two species of bark beetles (Cryptocarenus heveae and Hypothenemus sp.). Traps baited with (−)-α-pinene lures (release rate, 2–6 g/day at 25–28°C) were attractive to five bark beetle species (Dendroctonus terebrans, Hylastes porculus, Hylastes salebrosus, Hylastes tenuis, and Ips grandicollis) and one platypodid ambrosia beetle species (Myoplatypus flavicornis). Ethanol enhanced responses of some species (Xyleborus pubescens, H. porculus, H. salebrosus, H. tenuis, and Pityophthorus cariniceps) to traps baited with (−)-α-pinene in some locations. (−)-α-Pinene interrupted the response of some ambrosia beetle species to traps baited with ethanol, but only the response of D. onoharaensum was interrupted consistently at most locations. Of 23 species of ambrosia beetles captured in our field trials, nine were exotic and accounted for 70–97% of total catches of ambrosia beetles. Our results provide support for the continued use of separate traps baited with ethanol alone and ethanol with (−)-α-pinene to detect and monitor common bark and ambrosia beetles from the southeastern region of the US.     

Methyl 2,4,6-decatrienoates Attract Stink Bugs and Tachinid Parasitoids

Halyomorpha halys (Stål) (Pentatomidae), called the brown marmorated stink bug (BMSB), is a newly invasive species in the eastern USA that is rapidly spreading from the original point of establishment in Allentown, PA. In its native range, the BMSB is reportedly attracted to methyl (E,E,Z)-2,4,6-decatrienoate, the male-produced pheromone of another pentatomid common in eastern Asia, Plautia stali Scott. In North America, Thyanta spp. are the only pentatomids known to produce methyl 2,4,6-decatrienoate [the (E,Z,Z)-isomer] as part of their pheromones. Methyl 2,4,6-decatrienoates were field-tested in Maryland to monitor the spread of the BMSB and to explore the possibility that Thyanta spp. are an alternate host for parasitic tachinid flies that use stink bug pheromones as host-finding kairomones. Here we report the first captures of adult and nymph BMSBs in traps baited with methyl (E,E,Z)-2,4,6-decatrienoate in central Maryland and present data verifying that the tachinid, Euclytia flava (Townsend), exploits methyl (E,Z,Z)-2,4,6-decatrienoate as a kairomone. We also report the unexpected finding that various isomers of methyl 2,4,6-decatrienoate attract Acrosternum hilare (Say), although this bug apparently does not produce methyl decatrienoates. Other stink bugs and tachinids native to North America were also attracted to methyl 2,4,6-decatrienoates. These data indicate there are Heteroptera in North America in addition to Thyanta spp. that probably use methyl 2,4,6-decatrienoates as pheromones. The evidence that some pentatomids exploit the pheromones of other true bugs as kairomones to find food or to congregate as a passive defense against tachinid parasitism is discussed.     

2007～2008年世界塑料工业进展

收集了2007年7月～2008年6月世界塑料工业的相关资料,介绍了2007～2008年国外塑料工业的发展情况,提供了世界塑料产量、消费量及全球各类树脂的需求量及产能情况.按通用热塑性树脂(聚乙烯、聚丙烯、聚苯乙烯、聚氯乙烯、ABS树脂)、工程塑料(尼龙、聚碳酸酯、聚甲醛、热塑性聚酯、聚苯醚)、特种工程塑料(聚苯·硫醚、液晶聚合物、聚醚醚酮)、通用热固性树脂(酚醛、聚氨酯、不饱和聚酯树脂、环氧树脂)不同品种的顺序,对树脂的产量、消费量、供需状况及合成工艺、产品应用开发、树脂品种的延伸及应用的进一步扩展等技术作了详细介绍.     

2005～2006年国外塑料工业进展

收集了2005年7月～2006年6月国外塑料工业的相关资料,介绍了2005—2006年国外塑料工业的发展情况。提供了世界塑料产量、消费量及全球各类树脂生产量以及各国塑料制品的进出口情况。作为对比,介绍了中国塑料的生产情况。按通用热塑性树脂（聚乙烯、聚丙烯、聚苯乙烯、聚氯乙烯、ABS树脂）、工程塑料（聚酰胺、聚碳酸酯、聚甲醛、热塑性聚酯、聚苯醚）、通用热固性树脂（酚醛、聚氨酯、不饱和树脂、环氧树脂）、特种工程塑料（聚苯硫醚、液晶聚合物、聚醚醚酮）的品种顺序,对树脂的产量、消费量、供需状况及合成工艺、产品开发、树脂品种的延伸及应用的扩展作了详细的介绍。