Creative Giftedness Is Not Just What Creativity Tests Test: Implications of a Triangular Theory of Creativity for Understanding Creative Giftedness

Creativity tests, at best, measure only a small sliver of the whole of creative giftedness. These tests assess aspects of creative intelligence. But creativity is at least as much a conscious decision and even an attitude toward life as it is a traditionally defined ability. This article discusses how well-intentioned gifted educators may be following the wrong path by overly relying on tests of creativity to measure creative giftedness. This article presents a triangular theory of giftedness that conceptualizes creativity largely as an attitude toward life rather than as ability based.     

用修正的ADI-FDTD方法研究介质谐振器天线

为了有效地计算矩形介质谐振器的主模,对变换方向隐式(ADI)时域有限差分(FDTD)算法的迭代系数进行修正,即添加各向异性参数修正相速度误差,从而减少数值色散,提高计算精度。给出了改进后的三维ADI—FDTD计算公式,并对算法的稳定性、色散关系以及各向异性参数的选取进行了研究,数值结果证明了所给方法的有效性。文中还用这种方法计算了位于电磁带隙结构上的矩形介质谐振器天线的方向图。     

宽带天线阻抗匹配网络的优化设计

给出了一种处理宽带天线双端匹配的改进方法,即最优化算法,并且与实频法进行对比分析,最终可以明显地看出优化设计法原理简单,方法直观,设计方便,更适合宽带天线阻抗匹配网络的设计,最后用实例说明改进方法的可行性及优越性。     

STUDY OF GROOVE NONRADIATIVE DIELECTRIC WAVEGUIDE AND LEAKYWAVE ANTENNA

A new structure of dielectric waveguide for millimeter waveband namedgroove nonradiative dielectric(GNRD)waveguide and a leakywave antenna based on thisstructure are developed in this paper.The GNRD structure overcomes the difficulty of as-sembling precisely the dielectric strip in the nonradiative dielectric(NRD)structure.Thedispersion characteristics of the GNRD waveguide,and the propagation and radiationcharacteristics of the GNRD leakywave antcnna have been analysed by the use of thetransverse rcsonance mcthod.The theoretical results are in good agreement with the exper-imental data.     

带凹槽的三角形双频微带天线

1　Introduction　Incommunicationsystemapplications ,microstripantennashaveattractedmuchinterestduetotheirlightweightandlowcost.Possibledesignsfordual frequencymicrostripantennasincludedual modedual frequencypatchantennas,multi patchstructuresandreactively loadedpatchantennas,etc[1,5] .Theor thogonal modedual frequencypatchantennasprovidenosimilarradiatingpatternsofthetwooperatingfre quencies .Themulti patchstructureaddstothecom plexityinboththeoreticalanalysisandmanufacturing .Loadingthemicro…     

WUSB中新型带陷UWB天线

给出了一种紧凑的可用于WUSB的新型带陷超宽带印刷单极子天线．天线由内嵌条带的U形环组成并采用部分接地技术,从而使天线具有带陷超宽带特性．实测结果表明该天线输入端驻波比小于2的绝对阻抗带宽为7．88GHz,覆盖了3．12～11GHz的频率范围,其中5．06～5．89GHz范围内具有带阻特性．讨论了各几何参数对天线性能的影响,同时获得了该天线相对稳定的、近似全向且对称的测试方向图．由于此种天线无需额外的带阻滤波器来隔离天线与其他通信系统的干扰,从而大大简化了WUSB系统的设计．     

射频识别天线设计及其混合数值分析

为了广泛应用射频识别(RFID)技术,设计了一种标签天线。利用计算电磁场时域有限差分/矩量法的混合方法,分析了复杂环境中RFID天线的性能。将计算结果和实验进行比较,验证了混合方法计算结果的准确性,对RFID天线的工程设计有一定参考价值。     

一种用分光计测顶角调节方法的探索

在讨论分光计载物台对三棱镜不垂直度的角度补偿作用基础上,指出了分光计调节中的认识误区,在此基础上提出了一种调节方法,与其它方法比较,它简洁,高效,实用性强。     

唯一强clean三角矩阵环

称一个环R中的元素a是唯一强clean的,如果a可以唯一地表示成幂等元和可逆元的和且二者可交换.称环R是唯一强clean的,如果R中每一个元素都是唯一强clean元.研究了n×n阶三角矩阵环的唯一强clean性.设R为局部环,证明了环R上的任意n×n阶上三角矩阵环是唯一强clean的当且仅当R是唯一bleached的且...     

三级三角矩阵环上模的进一步性质

设Г是三级三角矩阵代数，modГ表示Г上的有限生成模范畴，Г^ζ是与modГ等价的范畴．讨论了Г^ζ的Jaeabson根，Г^ζ的单对象及投射对象的形式及Г的整体雏数等同调性质．