共查询到20条相似文献，搜索用时 31 毫秒
1.
基于对信息化社会中概率统计教育重要性的认识,重点从四个方面论述了概率统计的教育价值：（1）概率统计的随机观念有助于人们认识和理解随机现象;（2）概率统计的学习有助于学生对数学的整体理解;（3）概率统计的数学方法有助于提高公民处理信息的能力;（4）概率统计的思想方法有助于培养学生的科学观念. 相似文献
2.
Stochastic individual predicate/transition nets 总被引：1，自引：0，他引：1
We analyze the drawbacks of generally distributed time transition stochastic Petri nets （GDTT_SPN） in evaluating the performance of parallel systems, and propose a more general model, stochastic individual predicate/transition nets （SIPTN）. SIPTN has higher modeling power and could provide more realistic models compared to GDTT_SPN, because in SIPTN the sojourn time distribution is determined not only by the transition, but also by the individuals. It is further proved that GDTT_SPN is a subset of SIPTN. As SIPTN introduces folding techniques from predicate/transition nets, SIPTN models have simpler and more intuitive graphic notations and accordingly higher usability, and thus are suitable for constructing simulation models for parallel systems. 相似文献
3.
Vivek S. Borkar 《Resonance》1998,3(1):27-35
A mathematical model for collective learning by several autonomous agents is described. This is a stochastic recursion that
arises in several disparate fields like statistics, engineering and economics 相似文献
4.
Teaching statistics in biology: using inquiry-based learning to strengthen understanding of statistical analysis in biology laboratory courses 
下载免费PDF全文
下载免费PDF全文 Metz AM 《CBE life sciences education》2008,7(3):317-326
There is an increasing need for students in the biological sciences to build a strong foundation in quantitative approaches to data analyses. Although most science, engineering, and math field majors are required to take at least one statistics course, statistical analysis is poorly integrated into undergraduate biology course work, particularly at the lower-division level. Elements of statistics were incorporated into an introductory biology course, including a review of statistics concepts and opportunity for students to perform statistical analysis in a biological context. Learning gains were measured with an 11-item statistics learning survey instrument developed for the course. Students showed a statistically significant 25% (p < 0.005) increase in statistics knowledge after completing introductory biology. Students improved their scores on the survey after completing introductory biology, even if they had previously completed an introductory statistics course (9%, improvement p < 0.005). Students retested 1 yr after completing introductory biology showed no loss of their statistics knowledge as measured by this instrument, suggesting that the use of statistics in biology course work may aid long-term retention of statistics knowledge. No statistically significant differences in learning were detected between male and female students in the study. 相似文献
5.
A stochastic averaging method for predicting the response of quasi partially integrable and non-resonant Hamiltonian systems to fractional Gaussian noise (fGn) with the Hurst index 1/2<H<1 is proposed. The averaged stochastic differential equations (SDEs) for the first integrals of the associated Hamiltonian system are derived. The dimension of averaged SDEs is less than that of the original system. The stationary probability density and statistics of the original system are obtained approximately from solving the averaged SDEs numerically. Two systems are worked out to illustrate the proposed stochastic averaging method. It is shown that the results obtained by using the proposed stochastic averaging method and those from digital simulation of original system agree well, and the computational time for the former results is less than that for the latter ones. 相似文献
6.
唐玉玲 《株洲师范高等专科学校学报》2007,12(5):36-38
根据随机过程原理与生命科学模型。简单的就业问题可以看作是具有两个瞬态的Markov过程．通过对就业转移概率、失业转移概率以及期望逗留期与就业强度和失业强度关系的研究，结果表明：就业转移概率和期望逗留期与就业强度具有相同的增减性。失业转移概率与失业强度的增减性则正好相反． 相似文献
7.
根据黄河下游断流特征观测数据,应用数理统计方法,分析其时空分布规律,探讨断流特征要素间的相关关系;应用随机数学等方法,建立预测模型,分析黄河下游来水、用水、降水及断流历时发展趋势,并进行断流长度等预测。 相似文献
8.
试论中古汉语疑问代词宾语的句法位置 总被引：1，自引：0，他引：1
刘开骅 《南京师范大学文学院学报》2005,(1):172-178
疑问代词宾语由前置发展到后置是汉语语法史上的一件大事，本通过对中古时期十种献中疑问代词宾语的统计、描写与分析，认为中古时期是疑问代词宾语由前置发展到后置的重要阶段，但后置并未最后完成，而是呈现前置与后置共存并用的格局。 相似文献
9.
为指导人们正确地认识随机事件,引导人们适当抑制盲目应对随机事件的冲动。该文选取一个独特的视角,讨论概率统计中的小概率事件,拆解概率理论,分析中奖概率,并就概率论联系实际,培养统计思维,提高学生的应用能力等方面,探讨了通过生活中的数学问题增强对实际事物中随机性的敏感,培养学生概率直觉思维,提高学生的应用能力,培养创新人才的途径。 相似文献
10.
陈家清 《湖北第二师范学院学报》2013,(8):106-108
本文针对随机过程课程的教学,以现代教育科学为指导,探索研究了教学方法和教学措施的改革,提出了以人为本的教学理念,注重培养统计专业学生实践能力和创新素质的教学,探索开发潜能,拓宽学生的培养渠道,开展形式多样的第二课堂教学,优化课程教学方法。 相似文献
11.
指数分布在嵌入马氏链构造中的应用 总被引：1，自引：0，他引：1
对于出现指数分布的过程 ,利用指数分布的无记忆性 ,结合实例 ,构造出了马氏更新过程 ,导出了其相伴的半马氏核和嵌入马氏链的转移阵 相似文献
12.
This paper presents a theoretical model thatattempts to account for the early stages oflanguage acquisition in terms of interactionbetween biological constraints and inputcharacteristics. The model uses theimplications of stochastic representations ofthe sensory input in a volatile and limitedmemory. It is argued that phonologicalstructure is a consequence of limited memoryresources under the pressure of ecologicallyrelevant multi-sensory information. 相似文献
13.
Anecdotal evidence and statistics indicate that transition to secondary school for children who are “Looked After” is likely to present challenges. The present study aimed to find out the key factors that support Looked After children through this transition, as perceived by the main stakeholders. Data were gathered in two stages, using semi-structured interviews, from Year 6 and Year 7 children and their teachers and carers. Analysis of the results indicates that many different factors may support or hinder the transition, ranging from within-child factors such as resilience and social skills to systemic factors such as the extent of multi-agency working and school admission policies. Four key principles emerged from the results, which may be used to inform tailored transition packages to support children in this vulnerable group through transition. They emphasise the importance of planning and information sharing between key stakeholders, minimising difference, and offering holistic and individualised support. 相似文献
14.
《生物统计》课采用"一纸开卷"考试的体会 总被引：9，自引：0，他引：9
根据《生物统计》课的特点,尝试了“一纸开卷”考试方法,目的在于提高学生应用所学知识解决实际问题的能力,避免死记硬背,取得了初步效果。 相似文献
15.
竞技健美操成套动作中过渡与连接动作的功能与设计要求 总被引：4，自引：0，他引：4
运用文献资料法、录像资料法、数理统计法,结合2005-2008国际竞技健美操规则对竞技健美操成套动作中过渡与连接动作进行研究分析,阐述其定义并对其功能价值与设计进行初步研究。旨在充分认识过渡与连接动作的重要性,为健美操教学、进行健美操动作编排提供一定的参考依据。 相似文献
16.
17.
饮用水污染问题日趋严重,本文根据莆田市环保局的统计数据,分析了饮用水污染的原因,提出了利用生物技术对饮用水源进行保护和水质净化,以保障饮用水安全. 相似文献
18.
19.
张荣国 《娄底职业技术学院学报》2005,3(4):28-30
自上世纪八十年代以来，印度经济取得了举世瞩目的成就，据统计，八十年代以来经济年均增长率超过5％，2003年经济增长率高达8．2％，印度已成为当今世界发展最快的国家之一。根据印度经济发展路径的转变对印度经济的快速发展进行了简要的分析。 相似文献
20.
Kim Hill 《Learning & behavior》2010,38(3):319-328
Here I discuss how studies on animal social learning may help us understand human culture. It is an evolutionary truism that
complex biological adaptations always evolve from less complex but related adaptations, but occasionally evolutionary transitions
lead to major biological changes whose end products are difficult to anticipate. Language-based cumulative adaptive culture
in humans may represent an evolutionary transition of this type. Most of the social learning observed in animals (and even
plants) may be due to mechanisms that cannot produce cumulative cultural adaptations. Likewise, much of the critical content
of socially transmitted human culture seems to show no parallel in nonhuman species. Thus, with regard to the uniquely human
extent and quality of culture, we are forced to ask: Are other species only a few small steps away from this transition, or
do they lack multiple critical features that make us the only truly cultural species? Only future research into animal social
learning can answer these questions. 相似文献