中国知网高校实验室事故文献研究热点与趋势*

以“高校实验室事故”为主题,对中国知网载文进行关键词频次分析,展示我国高校实验室事故的研究脉络,从整体上把握其研究热点和发展趋势,为后续高校实验室安全管理的研究与实践提供参考。     

An exactly solved model of three-dimensional surface growth in the anisotropic KPZ regime

We generalize the surface growth model of Gates and Westcott to arbitrary inclination. The exact steady growth velocity is of saddle type with principal curvatures of opposite sign. According to Wolf, this implies logarithmic height correlations, which we prove by mapping the steady state of the surface to world lines of free fermions with chiral boundary conditions.     

Lobachevsky triangle altitudes theorem as the Jacobi identity in the Lie algebra of quadratic forms on symplectic plane

An isomorphism between the Lobachevsky and de Sitter’s world geometries with the symplectic geometry and the Lie algebra of binary quadratic forms is used to derive the altitudes concurrence for the Lobachevsky and de Sitter triangles.     

Optimal complex networks spontaneously emerge when information transfer is maximized at least expense: A design perspective

Complex networks with multiple nodes and diverse interactions among them are ubiquitous. We suggest that optimal networks spontaneously emerge when “information” transfer is maximized at the least expense. We support our hypothesis by evolving optimal topologies for a particle swarm optimizer (PSO), a population‐based stochastic algorithm. Results suggest that (1) an optimum topology emerges at the phase transition when connectivity is high enough to transfer information but low enough to prevent premature convergence, and (2) Small World (SW) networks are a compromise between higher performance and resistance to mutation. The graph characteristics of the optimal PSO networks in the SW regime are similar to that of the visual cortices of cat and macaque, thereby suggesting similar design principles. © 2006 Wiley Periodicals, Inc. Complexity 11:26–35, 2006     

思维导图在有机化学教学中的应用

从章节小结、酸碱性、有机物的鉴别、制备、合成等5个方面说明思维导图作为一种思维工具在有机化学教学中的应用，例证思维导图能够将有机化学的学习内容系统化、条理化、简洁化，有助于改进教学效果。     

大学数学教育的偏差与调整对策

大学数学教育与当今遍及全球的数学教育改革方向有较大的偏差.教学内容囿于课本,固守形式演绎体系,重视技能,忽略模式建构;传递、接受的观念根深蒂固,教学方法单一,以教材的逻辑线索代替认知线索;导致学生对内容本质缺乏理解,能力发展不均衡,情感态度发展有欠缺.调整对策是:追求全面的教育目标;提供包括知识背景、理论体系、应用、内容本质、思想方法等完整有机整体的学习内容;多种教学方法综合运用,设计合理的教学线索,让学生主动经历学习过程等.     

Parameter inference in small world network disease models with approximate Bayesian Computational methods

Small world network models have been effective in capturing the variable behaviour of reported case data of the SARS coronavirus outbreak in Hong Kong during 2003. Simulations of these models have previously been realized using informed “guesses” of the proposed model parameters and tested for consistency with the reported data by surrogate analysis. In this paper we attempt to provide statistically rigorous parameter distributions using Approximate Bayesian Computation sampling methods. We find that such sampling schemes are a useful framework for fitting parameters of stochastic small world network models where simulation of the system is straightforward but expressing a likelihood is cumbersome.     

线上线下混合式教学模式下的无机化学一流课程建设*

吉林大学无机化学课程有着优良的历史传承和积淀。面对“互联网+”带来的教与学的新发展和新变革,围绕学生知识、能力和素质三方面的综合培养,教学团队以信息技术为支撑,将课程思政浸润教学,高阶思维贯通教学,建立了“三化、三融、三阶”的线上线下混合式教学模式:“三化”指教学内容层次化、教学资源多样化、评价体系多维化;“三融”指理论课与实验课相融合、专业知识与思政元素相融合、多种教学手段相融合;“三阶”指课前、课中、课后三环节进阶式教学过程。该教学模式可满足学生个性化学习的需求,提升了学生学习的主动性,增加了师生互动,学生的思辨、创新等高阶能力明显提高。     

论化学学科在世界一流大学建设中的作用*

化学是世界科学发展史上的中心科学,是人类探索未知世界的基本手段,是人类的核心素养和知识体系中必不可少的组成部分。化学学科推动了人类文明进程和科学的形成演化,在世界一流大学形成进程中发挥了至关重要的作用。在新一轮科技革命和高等教育新工科建设的背景下,化学将继续发挥四大基础科学的支柱作用,因此在建设世界一流大学的过程中应不断加强和完善化学学科建设和人才培养体系。世界高等教育的发展证明:一流大学必须有强大的化学学科,能够提供一流的化学相关课程和培养体系,这对人才培养质量起着至关重要的作用。世界一流大学建设中,无论出现什么样的新趋势、新理念,无论评价导向如何变化,化学为基础科学和中心科学的地位不容撼动,在人才培养质量中的核心课程地位不容撼动。     

基于consensus滤波器的新型电压监测仪的设计

在进行深入分析consensus滤波器原理的基础上,提出了一种新的电压监测仪设计方法。首先将数模转换器在各个时刻测量的电压有效值看做一个小世界网络模型G中的一个节点。由于测量的电压信号容易被电网中的随机噪声所污染,通过consensus滤波器算法进行滤波,使得数模转换器测量的信号最终趋近于一个稳定的数值。仿真结果表明,该方法可以有效的还原被噪声污染的电压信号,而且即使在某一个时刻数模转换器出现故障失灵,所测量的数据也不受影响,仿真结果和实践应用表明了本文所提出方法的有效性和可行性。