The differential effects of prior knowledge on learning: A study of two consecutive courses in earth sciences

We studied the occurrence and nature of learningin a university first year Introduction toGeomorphology course, and its relations with priorknowledge taught in a prerequisite course, and withthe prior knowledge in the to be learned subjects. Tendimensions of knowledge were tapped before and afterthe course by conventional and cognitive structuremeasures that were derived by the concept mappingmethodology. The fine-grain analysis of learningoutcomes yielded the following results: (a) studentsacquired only a small portion of the content in thecourse Introduction to Geomorphology, (b) the priorgeological and geomorphological knowledge did notaffect the learning of the new geomorphologicalcontents, (c) the minor effects appeared within ratherthan across knowledge dimensions, and they affectedmainly the learning of smaller knowledge units, and(d) concept definition cannot be considereda valid probe of knowledge. The differential effects of prior knowledge question thecentral, global and undifferentiated role that schematheories ascribe to prior knowledge in futurelearning. They call for greater reference to theexposed dimensions of knowledge by suggestingadditional factors to be considered in the sequencingof courses, as well as to the acquisition of complexknowledge with partial meaning of the basic knowledgeunits, and the use of new cognitive structure probesof knowledge.     

大学生英语听力训练模式数据分析及学习策略的思考

本文就大学生听力训练的三种学习模式进行了实验,并结合认知学习论和“母语-英语知识-认知双元结构”的相关理论,对实验的相关数据进行了分析,同时,针对不同的学生提出了不同的学习策略和教学模式.     

国外企业危机管理理论研究综述

本文对国外主要的企业危机管理理论研究进行了较为全面的梳理。本文识别了研究者在本体论层面对危机本质形成的三种认识,并以此为线索区分了研究者关注的三类焦点问题、研究中的主要变量,分析和评价了形成的主要学术视角,指出其对企业从事危机管理,尤其是全面认识危机管理成败的指导意义。     

用户认知观视野中的情报检索

回溯了情报检索的历程及研究的重点线路，分析了传统的情报检索及情报检索系统存在的一些难题。针对这些问题，指出了应从用户认知观角度来探索情报检索研究，说明了用户认知观的研究对情报检索理论带来的影响，并从用户认知观的角度对情报检索系统的开发提出了一些设想。     

关系网络与创业机会识别:创业学习的多重中介效应

基于178家企业的样本数据,研究关系网络影响创业机会识别的内在机制。结构方程建模分析结果表明:关系网络不仅可以直接预测创业机会识别,还可以通过认知和经验学习以及实践学习间接预测创业机会识别。此外认知和经验学习对创业机会识别的预测作用相同,认知学习相比于经验学习对实践学习的预测作用则更强。     

慢加急性肝衰竭不同转归患者体温变化特点及护理对策

目的:明确慢加急性肝衰竭不同转归患者体温变化特点,并制定相应的护理对策。方法:收集11例慢加急性肝衰竭患者,死亡患者5例,出院患者6例,采用重复测量方差分析比较不同转归患者体温随住院时间的特点。结果:在住院第8天左右,死亡组患者体温升高,与出院患者比较差异有统计学意义(F=17.451,P0.05)。护理对策:要进一步提高护理级别,加强基础护理,严格执行无菌操作,将陪护人员作为预防感染宣教对象。     

创业直觉研究述评及展望

直觉在创业者决策实践中至关重要,但理论界对此却关注不足,国内相关研究尤为匮乏。从直觉与创业关系出发,提炼创业直觉概念内涵,剖析影响创业直觉的内外部因素及其作用过程,挖掘创业直觉对创业者、创业行为和新企业的作用机制,据此构建了创业直觉研究的理论框架。框架关注创业直觉的驱动机制、本质特征和效应机制三个环节,兼顾中间机制和边界条件,明晰了相关理论基础、研究视角、分析方法和研究内容,对开展实证研究和情境化检验具有参考意义。     

随机数发生器种子值对岩石试样弹塑性破裂过程的影响研究

阐述了岩土类材料的非匀质性特性,以及对岩土类材料弹塑性破裂过程进行数值模拟的分析程序REPFPA,通过8个试样的数值模拟"试验",深入地研究了随机数发生器种子值对岩石试样弹塑性破裂过程的影响.分析结果表明:只要岩石材料力学性质的均质度和其它参数保持不变,随机数发生器种子值对岩石试样弹塑性破裂过程与结果的影响很小.     

Cell therapy in congestive heart failure

Congestive heart failure （CHF） has emerged as a major worldwide epidemic and its main causes seem to be the aging of the population and the survival of patients with post-myocardial infarction. Cardiomyocyte dropout （necrosis and apoptosis） plays a critical role in the progress of CHF; thus treatment of CHF by exogenous cell implantation will be a promising medical approach. In the acute phase of cardiac damage cardiac stem cells （CSCs） within the heart divide symmetrically and/or asymmetrically in response to the change of heart homeostasis, and at the same time homing of bone marrow stem cells （BMCs） to injured area is thought to occur, which not only reconstitutes CSC population to normal levels but also repairs the heart by differentiation into cardiac tissue. So far, basic studies by using potential sources such as BMCs and CSCs to treat animat CHF have shown improved ventricular remodelling and heart function. Recently, however, a few of randomized, double-blind, placebo-controlled clinical trials demonstrated mixed results in heart failure with BMC therapy during acute myocardial infarction.     

现代日语量词“本”的认知考察

现代日语量词"本"的原型用法是表示细长物体的量,其扩张用法是表示运动时有轨迹的物体的量,边缘用法则是表示没有具体形状、但是内容上连贯,或时间上先后发生的、属于一个完整事件——比如人类的语言活动"记事"、"连载"、"讲演"等较新事物的量。另外日语中量词的使用,因不同事物,以及同一事物不同状态而不同。