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《College Teaching》2013,61(1):198-201
Abstract. This article evaluates the use of instructorcreated crossword puzzles as a means of reviewing course material. Students completed one crossword puzzle in class to prepare for an exam, and then they had the opportunity to complete a second crossword puzzle outside of class to prepare for the second exam. Students generally rated the crossword puzzle exercise favorably. They described learning more and finding the exercise more helpful for learning concepts and preparing for the exam when completing the crossword puzzle collaboratively in class rather than individually outside of class. Students also rated the exercise higher as a review technique and as more enjoyable when completed in class. 相似文献
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针对八数码问题的求解,给出了深度优先搜索、广度优先搜索和启发式搜索(譬如A*算法)之间的算法比较,通过实验验证各种算法并得出结论:在通常情况下,采用启发式搜索算法来进行状态空间的搜索更为方便、高效。 相似文献
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《Educational Philosophy and Theory》2013,45(2):162-177
This paper problematizes contemporary cultural understandings of autism. We make use of the developmental psychology concepts of ‘Theory of Mind’ and ‘mindblindness’ to uncover the meaning of autism as expressed in these concepts. Our concern is that autism is depicted as a puzzle and that this depiction governs not only the way Western culture treats autism but also the way in which it governs everyday interactions with autistic people. Moreover, we show how the concepts of Theory of Mind and mindblindness require autism to be a puzzle in the first place. Rather than treat autism as a puzzle that must be solved, we treat autism as a teacher and thus as having something valuable to contribute toward an understanding of the inherent partiality and uncertainty of human communication and collective life. 相似文献
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在知识发觉中遗传算法已经广泛应用于分类,模型选择和其它优化问题.但是它的行为和表现却直接受其输入参数值(如交叉概率和变异概率)的影响,不合理的参数设置通常会导致许多问题比如早熟问题.为此有的学者提出用自适应技术在算法过程中自适应调整这些参数,但这并未对遗传算法产生整体的改善,因为参数设置是依赖于具体问题的.提出了基于染色体个体寿命特征的遗传算法,用模糊逻辑控制器自适应调整交叉概率和变异概率.这个方法加强了遗传算法的全局搜索能力,很好的解决了早熟问题.将本算法和标准遗传算法及自适应遗传算法比较,仿真结果表明本算法在克服早熟问题上的明显优势. 相似文献
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本文对伦理难题进行界定,认为生命科学技术时代的伦理难题是善与善之间的选择,是在两种以上相互冲突的原则之间的艰难选择,是现代生命科技带来的伦理空白。生命伦理难题主要表现在死亡伦理、基因伦理、生殖技术伦理、器官移植伦理等方面,生命伦理难题源于生命科学技术的高速发展、伦理多元化、利益复杂化等。解决伦理难题,必须革新传统伦理理论,建立生命伦理委员会,确立解决伦理难题的程序,强化科学家的伦理责任,发挥政府的理性作用。 相似文献
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1IntroductionPath planning of autonomous mobile robot is pivotaltechnique for machine intelligence,which ai ms to finda non-collision path frominitial position to objectiveposition according to evaluation functions in anobstacle space[1].It can be described as travelersalesman problem(TSP),a typical combinationopti mization problem,which belongs to the well-known NP-hard opti mization[2].The mathematicaldefinition can be regarded as a mapG=(V,E),where eachlinee∈Ehas a nonnegative powerω(… 相似文献
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基因技术的发展为人类社会带来了巨大的利益,但如何安排由此产生的利益分配问题也成为一个世界性的难题。其中,围绕基因技术的物质基础———遗传资源的保护,从知识产权的层面来说,主要形成了两种截然对立的观点:即遗传资源的提供者可以和不可以成为专利权人。本文在对两种观点进行比较的基础上,分析了遗传资源专利法保护的可能性,并为保护提供了可供参考的具体模式。 相似文献
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模拟退火遗传算法的性能评价 总被引：5，自引：0，他引：5
李红军 《湖南城市学院学报》2003,24(3):111-113
遗传算法和模拟退火算法的结合对遗传算法的性能有很大的改进．将遗传算法与模拟退火算法相结合，提出了模拟退火遗传算法．研究结果表明，该算法能较好地克服传统遗传算法存在的不足，并在进化速度和全局寻优能力方面有较大的突破． 相似文献
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BP算法是人工神经网络研究的一个常用方法，但从本质上说是属于局部寻优法，容易陷入局部极小点，且存在着学习速度与精度之间的矛盾；遗传算法是一种全局优化算法，具有并行计算能力．本文采用遗传算法来训练前向神经网络，建立一个基于遗传算法和BP算法的神经网络预测模型．试验结果表明它是一个成功较高的预测模型． 相似文献
11.
常丽 《沙洋师范高等专科学校学报》2012,(2):113-114
本文主要分析了数据挖掘的相关概念及其过程,介绍了关联规则的提取方法、遗传算法的基本要素、操作技术、基本步骤等。最后结合相关实例提出了在遗传算法当中进行关联规则的数据挖掘方法。 相似文献
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遗传算法是模拟自然界生物进化过程的计算模型，本文阐述了遗传算法的基本理论，给出了遗传算法解决背包问题的基本方法，并通过实例计算证明了该方法的可行性和有效性． 相似文献
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After WWII, the economic prospects of the Philippines, then the second-largest economy in Asia, were viewed positively, but by the mid-1970s it had become Asia’s developmental puzzle for its failure to sustain economic growth. In contrast during the same period, regional neighbours, Hong Kong, Taiwan, South Korea and Singapore, achieved previously unknown levels of economic growth and were dubbed the ‘East Asian Tigers’. This article analyses the post-war development of the Philippines, focusing on the role that education played, and contrasts it with the East Asian Tigers. It is argued that the Philippines was distinctive in the state’s failure to exercise strong central control, especially of the education system, which was neither harnessed to promote economic development nor national unity. The status quo, which has its origins in a plantation economy, prevailed, and this ensured the country remained an unequal and impoverished democracy. 相似文献
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吴祝平 《黄冈职业技术学院学报》2010,12(2):77-79
辨析了惑与解惑概念,指明惑不是一般意义的无知,解惑不是一般意义的解答问题。在此基础上,论述了在职业教育的教学设计中实现"解惑"的主要路径。 相似文献
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"人工智能+基于心智的生物学"课程的总体设计是从生物学视角来解释人工智能的算法逻辑,包括从生物学看终极算法、从计算机科学看认知神经科学、仿生人工智能、心智社会四大模块。"从进化论到遗传算法"是"从生物学看终极算法"模块的第3课时,该课时教学通过多足行走器等可视化算法内容培养学生对遗传算法的兴趣,通过类比达尔文的进化论使学生理解遗传算法的架构和逻辑、培养他们的跨学科思维能力,通过让学生模拟遗传算法的表演和上机实践过程进一步加深他们对遗传算法概念的理解、培养他们的信息意识和计算思维等。 相似文献
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R. Scott Kretchmar 《Quest (Human Kinetics)》2013,65(1):171-177
The papers presented at the 2004 Academy meetings can be thought of as pieces from jigsaw puzzles. While the employment of this metaphor over the years has been useful, we may be ready for a new image, one that is both more accurate and inspiring. We can picture ourselves working at different locations along a river bank. Some of us work upstream, near the headwaters, at the molecular and genetic level. Others work on anatomy, physiology, culture, psychological well-being, ethics, and even spirituality—all different places along the shore as we move down the river toward the broad and deep waters by the bay. But no matter what our location, we all work on water in one form or another. This forces us to come to grips with our interdependence as researchers and with far more complex notions of causation that have been popular heretofore. The riverbank metaphor promises a kind of cooperation, unity, and mutual appreciation that cannot be gained when we come to interdisciplinary meetings carrying our independently produced and prized puzzle pieces. 相似文献
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生产车间的设备布局设计是一个组合优化的问题。具有NP完全(Nondeterministic Polynomial Complete)、非线性等特性,常规方法较难以求解。本文提出实际路线运算法结合基因算法来求解最优设备布局结果,利用遗传算法探索生产车间设备布局问题时适值函数的确定方法。 相似文献
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基于WEB的考试系统是现代考试系统发展的趋势。智能组卷系统是考试系统中的一个关键组成部分,而遗传算法是智能考试系统中最常采用的算法。通过讨论智能组卷中遗传算法的几个关键问题,提出了合理的设定种群规模、变异参数,避免遗传算法过早收敛并增强局部搜索能力、整体稳定性等问题的改进方法。 相似文献
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In three studies, we examined children's geography learning from a physical puzzle and an app designed to mimic the puzzle. In Study 1, 5‐ and 6‐year‐olds were taught Australia's states by an experimenter using a puzzle or were taught by an app. Children learned significantly more states from instruction with the puzzle than when they used the app independently. When children were allowed to bring home the puzzle or app for 1 week in Study 2, total learning between conditions was comparable. Length and frequency of use were related to learning only for puzzle users. In Study 3, children were taught the geography lesson by an experimenter using the app. Children's learning from this social app condition was equal to the social puzzle condition but higher than the solo app condition of the earlier studies, suggesting that learning from digital devices is most successful when supplemented with in‐person social interaction. 相似文献
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扼要介绍模式定理,提出一种新的适应值赋值方法.借助该适应值赋值方法,分析了模式定理与交叉概率Pc、变异概率Pm的关系,推导出模式定理成立的参数条件为：√pc＋√pm＜1. 相似文献