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Search Results: 1 - 10 of 359319 matches for " 王叶红 "
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大学生完美主义与学习倦怠的关系研究——学业自我效能感的中介作用
Mediation Effect of Academic Self-Efficacy on the Relationship between Perfectionism and Burnout among Undergraduates
 [PDF]

, 谷晓静
Advances in Psychology (AP) , 2014, DOI: 10.12677/AP.2014.47117
Abstract:
目的:探讨大学生完美主义、学业自我效能感、学习倦怠的关系。方法:本研究使用学业自我效能感量表、中文Frost多维度完美主义问卷和大学生学习倦怠问卷,在唐山市三所大学回收有效问卷480份,利用SPSS18.0和AMOS20.0等统计软件进行数据分析。结果:1) 适应性完美主义与学习倦怠呈负相关;非适应性完美主义与学习倦怠呈正相关。2) 学业自我效能感在完美主义及学习倦怠之间起着重要的中介作用。
Objective: To explore the relationship among perfectionism, academic self-efficacy and student burnout of undergraduates. Methods: Using the academic self-efficacy scale, Chinese frost multi-dimensional perfectionism scale (CFMPS) and student burnout questionnaire, we investigated 480 college students from four universities in Tangshan city, and then collected the data. The statistic softwares used in the study were SPSS18.0 and AMOS20.0. Results: 1) Negative correlation was found between daptive perfectionism and student burnout; Positive correlation was found between maladaptive perfectionism and student burnout. 2) Academic self-efficacy plays an important mediation role between perfectionism and burnout among undergraduates.
多层强边柱冷成型钢结构体系抗震性能分析
星星,
- , 2017, DOI: 10.11918/j.issn.0367-6234.201701036
Abstract: 多层强边柱冷成型钢结构能够促进低层冷成型钢结构向多层住宅结构体系的发展.为了分析多层强边柱冷成型钢住宅结构体系在地震作用下的动力特性,本文提出了该类结构的主要抗侧构件强边柱冷成型钢组合墙体可以考虑节点实际连接性能的简化计算模型,进而得到整体结构抗震计算模型;根据作者前期开展的墙体抗剪试验结果并结合国外规范,提出此类结构在地震作用下的侧向变形验算指标;对整体结构进行抗震性能研究.结果表明:考虑节点连接的等代拉压杆模型能够准确预测此类结构的实际受力特性;将1/300和1/75分别作为此类结构在多遇和罕遇地震作用下的层间位移角限值是安全可靠的;在9度罕遇地震作用下,此类结构不会发生倒塌破坏;进行此类结构设计时,不宜采用两个方向刚度差异过大的抗剪墙体组合,同时应重点加强结构沿墙体开洞率较大方向的墙体抗剪强度;在特别高烈度地区进行此类结构设计时,应兼顾墙体抗剪强度和墙体边柱的竖向承载能力,避免结构因墙体边柱的压屈破坏而导致整体结构失效.
Mid-rise cold-formed steel (CFS) structure with reinforced end studs can promote the development of mid-rise CFS residential buildings from low-rise ones. To analyze the dynamic characteristics of mid-rise CFS residential structures with reinforced end studs under earthquakes, a simplified calculation model of CFS shear wall with reinforced end studs, which is the main lateral load-bearing structural component of the structure, was proposed. The proposed model could consider the real behavior of beam-column joint, and then the seismic calculation model of the whole structure was further obtained. Lateral design objectives for the structure under earthquake were proposed according to abroad specification and previous shear wall test results that performed by authors, and seismic analysis on a mid-rise CFS structure with reinforced end studs was carried out. The results show that equivalent-bracing model considering the mechanical behavior of beam-column joint can precisely predict the seismic performance of the structure. It is safe and reliable that 1/300 and 1/75 being taken as the elastic and inelastic storey drift limits of the structure under frequent and severe earthquake, respectively. Mid-rise CFS structure with reinforced end studs will not collapse under severe earthquake with a degree of 9. It is not suitable to adopt shear wall combination with large difference in stiffness between two directions, and the shear strength of the walls along the direction with larger opening rate should be strengthened emphatically. In areas of particularly high seismicity, both shear strength of the wall and vertical bearing capacity of end studs should be taken into account to avoid overall failure, which is caused by end studs' buckling.
arem模式对2002年汛期降水的实时预报试验
,志斌
气象 , 2005, DOI: 10.7519/j.issn.1000-0526.2005.2.004
Abstract: 2002年主汛期,“973”(中国暴雨)项目研制开发的η坐标有限区域数值预报模式(arem)在武汉暴雨研究所进行了每天两个时次(08时、20时)的实时数值预报试验。实时预报表明,该模式适合于我国计算机条件,对我国夏季降水有相当预报能力。对试验结果进行了分区ts评分检验,模式对我国东部地区的降水预报评分最高,08时起报的0~24h时效的降水预报,对24小时降水量大于0。1、10、25和50mm的ts评分分别为0。578、0。282、0。144和0。062。对2002年主汛期的几次强降水过程的预报结果表明:模式对2002年梅雨、长江流域暴雨、华南暴雨和华北暴雨都有很好的预报,模式对雨带的位置、移动、降水强度、降水的持续与减弱的预报都具备一定的能力。
诱导子的作用方式及其在植物组织培养中的应用
,和春,李国凤
植物学报 , 1999,
Abstract: 介绍诱导子的概念,作用方式以及在植物组织培养中应用的研究进展。
高原涡诱生西南涡特大暴雨成因的个例研究
赵玉春,
高原气象 , 2010,
Abstract: 利用多途径探测与再分析资料,通过诊断分析、数值模拟和敏感性试验,对2008年7月20~21日一次高原涡东移诱生西南涡并引发川中特大暴雨的天气过程进行了初步分析,探讨了西南涡特大暴雨发生的中尺度环境场特征,特殊地形和非绝热物理过程在高原涡东移诱生西南涡特大暴雨中的作用。结果表明,高原涡形成后沿高原东北侧下滑,在四川盆地诱生出西南涡,川中特大暴雨在西南涡形成过程中由强中尺度对流系统(MCSs)的活动造成。高原涡东移诱生的低层偏东气流在川西高原东侧地形的动力强迫抬升作用下,释放对流有效位能激发出MCSs产生强降水,降水凝结潜热加热反馈驱动西南涡快速发展。地形的动力作用仅能形成浅薄的西南涡,降水凝结潜热的加入才能使西南涡充分发展。高原涡的发展主要受地面热通量影响,它的发展与否在很大程度上决定西南涡能否形成。盆地周边高大山脉对西南涡的位置分别有不同程度的影响,而盆地周边高大山脉上叠加的中小尺度地形对西南涡和暴雨带的整体位置影响不大,在一定程度上影响暴雨的落区。
无源性原理在鲁棒镇定中的应用
华文, 戴冠中,
自动化学报 , 2002,
Abstract: ?研究自由动态临界稳定仿射系统的输入到状态镇定,通过零状态可探测假设,减弱了通常的前提条件:自由动态全局渐近稳定;运用无源性原理研究扰动抑制,给出了输出负反馈解扰动抑制问题的简明条件.分析中用到Legendre-Fenchel变换.
控制李雅普诺夫承数的镇定应用
华文, 戴冠中,
自动化学报 , 2004,
Abstract: ?指出控制李雅普诺夫承数(源于松弛控制)正是零状态可检测性的一种刻面,并由此区别两类镇定控制;无源性控制和Sontag型控制.然后考察一类典型的级联系统,基于一定条件下的控制李雅普诺夫函数,给出了不同于无源性控制的Sontag型镇定设计;考察这类系统的扰动情形,基于一定条件下的输入到状态稳定控制李雅普诺夫承数,给出了Sontag型输入到状态镇定设计.
一类前馈系统的鲁棒镇定
华文, , 康剑灵
自动化学报 , 2005,
Abstract: ?Twokindsofsaturatedcontrollersaredesignedforaclassoffeedforwardsystemsandtheclosed-loopresultedislocallyinput-to-statestableandinput-to-statestable,respectively.Bytheword"locally",itismeantthattherearerestrictionsontheamplitudeofinputs.Atfirst,undertheguidanceofsuitableenergyfunctions,twokindsofsaturatedcontrollersaredesignedaslocallyinput-to-statestabilizersforaclassofperturbedlinearsystems,fromwhichexplicitgainestimationscanbeobtainedforthesubsequentdesign.Thenundertheconditionsthattwosubsystemsofthefeedforwardsystemarerespectivelyoflocallyinput-to-statestabilityandinput-to-statestability,thesmallgaintheoryisusedtodeterminesaturateddegreesforcorrespondingrobuststabilizers.Thestabilityproofsaregivenbyusinganewcharacterizationofinput-to-statestabilitythatisbasedontheconceptofultimateboundedness.Asanapplication,saturatedcontrollersaredesignedforthepartialdynamicsofacertaininvertedpendulum.
诱导子的作用方式及其在植物组织培养中的应用
,和春,李国凤
植物学报 , 1999,
Abstract: ?介绍诱导子的概念,作用方式以及在植物组织培养中应用的研究进展。
四个西班牙酿酒葡萄品种在陕西关中地区的引种表现
梁曼,,
北方园艺 , 2014,
Abstract: 以2010年由西班牙引进的3个红色葡萄品种“WH10-11”、“WH10-12”、“WH10-14”和1个白色葡萄品种“WH10-13”为试材,分别以山西关中地区红色葡萄品种“小味儿多”和白色葡萄品种“小芒森”为对照,研究比较了各品种的物候期、生长结果习性、果实品质、抗病性等指标,以观察各引进品种在陕西关中地区的表现。结果表明红色品种“WH10-11”、“WH10-12”、“WH10-14”在陕西关中地区表现优于对照“小味儿多”,但“WH10-11”与“WH10-14”的萌芽率较低,“WH10-11”果穗成熟度不一致;白色试验品种“WH10-13”在丰产性方面优于对照“小芒森”,但果实品质逊色于对照;4个试验品种对霜霉病抗性为中抗,在霜霉病爆发盛期,感病指数均低于对照。
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