在高校排球教学中应用建构主义理论的实验研究

本文通过应用建构主义教学的理论和方法,结合排球教学的实际,在高校排球课中做了教学实验,结果显示:该教学方法能够体现学生的主体地位,促进学生的合作学习;有利于学生对排球技能的掌握,在教学效果上好于传统教学方法。     

浅谈排球教学中几个关键技能的教学分析

排球教学说到底是一种排球教学过程中教师教学生掌握排球知识、技能的一种方法。与学法相对,属排球教学方法的范畴,是排球教学方法的下位概念。它从排球教材入手,在充分分析教材本身内容结构基础上,结合学生实际按一定规律和特点,创建教学内容有序步骤与过程,是一种专项分种教学法。通过对排球教学中几个关键技能的教学分析,把握排球教学的重点和难点,提高排球教学的效果。     

多媒体技术在排球教学中的应用

在排球技术教学中,通过多媒体辅助教学方法的运用,可以加强排球教学的直观性,促进学生对排球技术的理解和掌握,加速运动技能的形成,从而取得较好的教学效果。     

如何在高校排球教学中调动学生的主观能动性

通过对目前普通高校排球教学中普遍存在的一些问题进行研究,认为高校排球教学中应该调动学生的主观能动性;并指出在教学中应根据教材内容和学生的实际情况,灵活采用多种教学方法。     

高校排球教学中调动学生的主观能动性

通过对目前普通高校排球教学中普遍存在的一些问题进行研究,认为高校排球教学中应该调动学生的主观能动性;并指出在教学中应根据教材内容和学生的实际情况,灵活采用多种教学方法.     

高职院校排球教学现状的分析与研究

在高职院校体育教学中,排球教学一直是重要组成部分,也是深受学生喜爱的一项体育运动,该项运动对于提高学生的身体综合素质有很大的帮助作用。近年来,随着高职院校教育教学改革的不断推进,体育教学也进行了一些改革和探索,排球教学虽然取得了一定的成绩,但也存在很多问题。针对高职院校排球教学中出现的各种状况,积极转变教学观念,改革教学方法,进一步提高排球教学水平,促进学生对排球运动的参与度,提高学生参加排球运动的积极性。     

关于软式排球技术整体教学方法的探讨

传统的体育教学在教学步骤上用没有针对软式排球的特点进行教学，学生掌握技术不好。尝试采用整体教学法，学生当堂就能基本掌握技术，因此看出，整体教学法很适合于软式排球技术的教学。通过整体一分解一整体的教学过程探讨软式排球的整体教学方法，使学生更好、更快地掌握打软式排球的基本技能。     

普通高校排球公选课应重视学生普及与提高相结合的培养

由于中学排球基础教育的先天不足,高校排球公选课面临诸多难题,许多学生对排球不感兴趣,排球基本技术、基本知识、基本战术基础差,只有少数学生具备一定的基础,排球教学场地又多为室外场地,硬件条件较差,教学时数逐渐缩短,教学任务难以完成,教师和学生皆处于两难境地。因此,在排球公选课教学中,必须加强对学生普及与提高相结合的培养。教学方法既要发挥教师的主导作用,又要重视学生的主体作用,使两者有机地结合在一起,以适应学生体育基础的需要。     

浅谈体育游戏在排球教学中的作用与运用

本文从我国排球教学的发展方向探讨体育游戏在排球教学中的作用，总结出体育游戏对排球教学方法和手段的影响。分析了游戏在排球教学中的运用和取得的效果，说明它有利于促进球技的掌握，从而激发了学生学习和参与的主动性，感受到在快乐中学习排球技能的乐趣。     

保留项目特色拓宽高校排球教学空间

在高校体育教学过程中,排球教学是其中至关重要的组成部分,在高校排球教学过程中,要进一步提升排球教学方法的针对性和有效性,使教师教学和学生的学习得到有效的连接,并确保排球的教学目标和教学任务得到有效的完成。然而,在高校排球教学过程中,排球运动在高校的开展情况和教育效果并不尽如人意。结合这样的情况,该文着重分析如何保留项目特色,使高校排球教学空间得到有效拓展,希望通过该文的分析可以为相关人士提供一定意义上的借鉴。     

Markedness and its Interpretation in Language Use

Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.     

Lower Paleozoic oil relationships within Williston Basin, Canada

The Williston Basin is a significant petroleum province, containing oil production zones that include the Middle Cambrian to Lower Ordovician, Upper Ordovician, Middle Devonian, Upper Devonian and Mississippian and within the Jurassic and Cretaceous. The oils of the Williston Basin exhibit a wide range of geochemical characteristics defined as "oil families", although the geochemical signature of the Cambrian Deadwood Formation and Lower Ordovician Winnipeg reservoired oils does not match any "oil family". Despite their close stratigraphic proximity, it is evident that the oils of the Lower Palaeozoic within the Williston Basin are distinct. This suggests the presence of a new "oil family" within the Williston Basin. Diagnostic geochemical signatures occur in the gasoline range chromatograms, within saturate fraction gas chromatograms and biomarker fingerprints. However, some of the established criteria and cross-plots that are currently used to segregate oils into distinct genetic families within the basin do not always meet with success, particularly when applied to the Lower Palaeozoic oils of the Deadwood and Winnipeg Formation.     

An Analysis of Catherine＇s Character——Wuthering Heights

Wuthering Heights, Emily Bronte＇s only novel, was published in December of 1847 under the pseudonym Ellis Bell. The book did not gain immediate success, but it is now thought one of the finest novels in the English language. Catherine is the key character of this masterpiece, because everybody and everything center on her though she had a short life. We can understand this masterpiece better if we know Catherine well.     

Characterization of Ordovician carbonate reservoirs, southeastern Saskatchewan, Canada

The discovery of the prolific Ordovician Red River reservoirs in 1995 in southeastern Saskatchewan was the catalyst for extensive exploration activity which resulted in the discovery of more than 15 new Red River pools. The best yields of Red River production to date have been from dolomite reservoirs. Understanding the processes of dolomitization is, therefore, crucial for the prediction of the connectivity, spatial distribution and heterogeneity of dolomite reservoirs.The Red River reservoirs in the Midale area consist of 3～4 thin dolomitized zones, with a total thickness of about 20 m, which occur at the top of the Yeoman Formation. Two types of replacement dolomite were recognized in the Red River reservoir: dolomitized burrow infills and dolomitized host matrix. The spatial distribution of dolomite suggests that burrowing organisms played an important role in facilitating the fluid flow in the backfilled sediments. This resulted in penecontemporaneous dolomitization of burrow infills by normal seawater. The dolomite in the host matrix is interpreted as having occurred at shallow burial by evaporitic seawater during precipitation of Lake Almar anhydrite that immediately overlies the Yeoman Formation. However, the low δ18O values of dolomited burrow infills (-5.9‰～ -7.8‰, PDB) and matrix dolomites (-6.6‰～ -8.1‰, avg. -7.4‰ PDB) compared to the estimated values for the late Ordovician marine dolomite could be attributed to modification and alteration of dolomite at higher temperatures during deeper burial, which could also be responsible for its 87Sr/86Sr ratios (0.7084～0.7088) that are higher than suggested for the late Ordovician seawaters (0.7078～0.7080). The trace amounts of saddle dolomite cement in the Red River carbonates are probably related to "cannibalization" of earlier replacement dolomite during the chemical compaction.     

Features of Women's language

Language is a means of verbal communication. People use language to communicate with each other. In the society, no two speakers are exactly alike in the way of speaking. Some differences are due to age, gender, statue and personality. Above all, gender is one of the obvious reasons. The writer of this paper tries to describe the features of women＇s language from these perspectives： pronunciation, intonation, diction, subjects, grammar and discourse. From the discussion of the features of women＇s language, more attention should be paid to language use in social context. What＇s more, the linguistic phenomena in a speaking community can be understood more thoroughly.     

Design and analysis of generic LBS application developing platform

Location based services is promising due to its novel working style and contents.A software platform is proposed to provide application programs of typical location based services and support new applications developing efficiently. The analysis shows that this scheme is easy implemented, low cost and adapt to all kinds of mobile nework system.     

橡胶颗粒沥青混合料低温抗裂性试验研究

以AC-13级配为基础,将橡胶颗粒代替部分集料掺入混合料中,以低温弯曲试验为评价方法对不同橡胶颗粒掺量下沥青混合料的低温抗裂性进行研究,并引入应变能密度值对混合料的低温抗裂性进行综合评价.试验结果表明:橡胶颗粒沥青混合料试件的破坏微应变均超过2 300,满足冬寒区的技术指标;无论是否掺加橡胶颗粒,随着温度的下降,沥青混合料破坏时的最大弯拉强度增大,弯拉应变降低,劲度模量增大;弯曲应变能密度在胶粒掺量为1%左右时具有较大的弯曲应变能密度值,此时橡胶颗粒沥青混合料具有较好的低温抗裂性.     

A computer generator for randomly layered structures

AcomputergeneratorforrandomlylayeredstructuresYUJia shun1,2,HEZhen hua2(1.TheInstituteofGeologicalandNuclearSciences,NewZealand;2.StateKeyLaboratoryofOilandGasReservoirGeologyandExploitation,ChengduUniversityofTechnology,China)Abstract:Analgorithmisintrod…     

低渗透非均质砂岩油藏启动压力梯度研究

理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。     

Quantitative trait loci （QTLs） for quality traits related to protein and starch in wheat

Quality traits in wheat （Triticum aestirum L.） were studied by quantitative trait locus （QTL） analysis in a recombinant inbred line （RIL） population, a set of 131 lines derived from Chuan 35050 × Shannong 483 cross （ChSh）. Grains from RILs were assayed for 21 quality traits related to protein and starch. A total of 35 putative QTLs for 19 traits with a single QTL explaining 7.99-40.52% of phenotypic variations were detected on 10 chromosomes, 1D, 2A, 2D, 3B, 3D, 5A, 6A, 6B, 6D, and 7B. The additive effects of 30 QTLs were positive, contributed by Chuan 35050, the remaining 5 QTLs were negative with the additive effect contributed by Shannong 483. For protein traits, 15 QTLs were obtained and most of them were located on chromosomes 1 D, 3B and 6D, while 20 QTLs for starch traits were detected and most of them were located on chromosomes 3D, 6B and 7B. Only 7 QTLs for protein and starch traits were co-located in three regions on chromosomes 1D, 2A and 2D. These protein and starch trait QTLs showed a distinct distribution pattern in certain regions and chromosomes. Twenty-two QTLs were clustered in 6 regions of 5 chromosomes. Two QTL clusters for protein traits were located on chromosomes 1D and 3B, respectively, three clusters for starch traits on chromosomes 3D, 6B and 7B, and one cluster including protein and starch traits on chromosome 1D.