基于属性加权的不完全数模糊 c 均值聚类算法

针对现有的不完全数模糊聚类算法未考虑样本各维属性对聚类贡献不同的问题,提出了基于属性加权的不完全数模糊c均值聚类算法.利用ReliefF算法评价各维属性的重要程度,通过加权欧式距离将属性权重结合入聚类,并能实现在聚类迭代过程中的缺失属性、隶属度及聚类中心的一体化求解.实验结果表明,该算法强调了重要属性在不完全数模糊聚类中的作用,能够得到更为准确的聚类结果.     

艺术施教者导游新角色

文章从审美和非审美两个方面阐述导游员在旅游过程中对旅游者进行艺术教育的作用和意义,认为在审美方面,通过导游员实地的有效的讲解可以培养旅游者的审美能力,塑造旅游者的审美境界,陶冶旅游者的性情;在非审美方面,通过导游员的有效引导可以实现传播知识经验、加强道德修养和强健体魄的目标。     

Re-examination of constraints on the Maxwell-Boltzmann distribution by Helioseismology

Nuclear reactions in stars occur between nuclei in the high-energy tail of the energy distribution and are sensitive to possible deviations from the standard equilibrium thermal-energy distribution, the well-known Maxwell-Boltzmann Distribution (MBD). Strong constraints on such deviations were made previously with the detailed helioseismic information of the solar structure. With a small deviation parameterized with a factor exp[-δ (E/kT)²], it was shown δ restricted between -0.005 and +0.002. These constraints have been carefully re-examined in the present work. We find that a normalization factor was missed in the previous modified MBD. In this work, the normalization factor c is calculated as a function of δ. It shows the factor c is almost unity within the range 0< δ ≤0.002, which supports the previous conclusion. However, it demonstrates that δ cannot take a negative value from the normalization point of view. As a result, a stronger constraint on δ is defined as 0≤ δ ≤0.002. The astrophysical implication on the solar neutrino fluxes is simply discussed based on a positive δ value of 0.003. The reduction of the ⁷Be and ⁸B neutrino fluxes expected from the modified MBD can possibly shed alternative light on the solar neutrino problem. In addition, the resonant reaction rates for the ¹⁴N(p, γ)¹⁵O reaction are calculated with a standard MBD and a modified MBD, respectively. It shows that the rates are quite sensitive even to a very small δ. This work demonstrates the importance and necessity of experimental verification or testing of the well-known MBD at high temperatures.     

地方本科院校审美教育的困惑与出路——以玉林师范学院为例

人们都喜欢做知道怎么做的事情,但是不喜欢做应该做的事情。感性的人在遇到理性的社会现实的时候,往往会有挫折和压迫感,只有通过美育修养才能够实现理性与感性的统一。解决问题的唯一出路在于,将美育的手段作为目的,即将关注结果的目光更多地转向关注过程。教师是思想者,应该研究真理的所在,并将这种真理传播出去。学生是行动者,应该在知道真理之后,学会如何将这些真理运用到实践中去。师生之间是一个真理传播和实践的衔接过程,美育是实现这种衔接的良好途径。     

老龄产业,和谐社会建设的重要支点——以河南为例

和谐社会建设,是党中央、国务院在新时期提出的一项重要战略任务.老龄产业发展滞后影响着河南社会的和谐,发展老龄产业是和谐社会建设的本质要求和重要途径;同时,和谐社会建设又为河南老龄产业发展提供了重要机遇.因此,要推进和谐社会建设进程,必须加快老龄产业的发展,与此同时,也只有将老龄事业放在和谐社会建设的整体规划中,当前河南老龄产业发展问题才能得到根本解决.     

中国风电产业发展分析

分6个阶段回顾了中国风电产业的发展历程,并从法律法规规划、财税电价政策两方面简述了国家风电产业的相关政策,指出这些政策对产业发展起到了重要的支撑和调节作用。用风电装机及增长率、发电量及增长率数据分析了中国风电产业发展现状,用2013年大陆企业国内市场占有率、进入世界风电设备15强的国内8家企业的全球新增装机容量等数据,说明国内风机制造商已经发展壮大起来。分析指出了缺乏顶层设计、弃风限电严重、自主研发能力不足、部分主要零部件依赖进口和风电设备存在质保"困局"五个亟待解决的主要问题。最后分析了风电产业发展前景。     

17F + p 厚靶实验对18Ne共振态性质的研究

实验通过17F+p共振弹性散射研究了复合核18Ne激发态中与天体核反应14O(α, p)17F相关的共振态性质。利用兰州放射性束流线(RIBLL)对弹核碎裂反应产生的放射性束17F进行了分离和提纯。经过降能后,能量为4.22 AMeV 的17F束流轰击在T2终端的厚氢靶(CH₂)_n上。　两套∆E-E Si探测器望远镜放置在两个不同的探测角度θ_lab≈2.3°和14°上,对反冲质子的角度和能量进行了测量。实验观测到了复合核18Ne的几条质子共振能级。通过R-Matrix理论程序对激发函数进行拟合,得到了共振态的能量、 自旋、 宇称和衰变宽度等共振参数。Resonant properties in18Ne relevant to the stellar reaction of 14O(α, p)17F have been investigated through a resonant elastic scattering of 17F+p. The 17F RI beam was produced via a projectile fragmentation reaction, and subsequently separated and purified by Radioactive Ion beam Line in Lanzhou(RIBLL). After a series of energy degradation,a 4.22 AMeV 17F beam bombarded a thick(CH₂)_ntarget at T2 terminal. Energy and angle of the recoiled protons were measured by two sets of ∆E-E silicon telescope at θ_lab≈2.3°,14° respectively. Several resonances in 18Ne were observed,and their resonant parametersincluding energy,spin parity and decay width have been determined by an R-Matrix analysis of the experimental excitation function.