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The purpose of this paper is to find the solutions to the quadratic mini- mization problem by using the resolvent approach. Under suitable conditions, some new strong convergence theorems are proved for approximating a solution of the above min- imization problem. The results presented in the paper extend and improve some recent results. 相似文献
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A viscosity method for a hierarchical fixed point solving variational inequality problems is presented. The method is used
to solve variational inequalities, where the involved mappings are non-expansive. Solutions are sought in the set of the fixed
points of another non-expansive mapping. As applications, we use the results to study problems of the monotone variational
inequality, the convex programming, the hierarchical minimization, and the quadratic minimization over fixed point sets. 相似文献
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报道在镁金属蒸气中利用两束激光三光子共振激发原子3snp1P中高里德堡态时,观察到随泵浦激光功率的增强,出现3s4s1S0-3sns1S0、3snd1D2(n≈18~32)偶宇称态偶极禁戒跃迁增强,以及3sns1S0能级移动现象,并解释为光泵过程引起的原子激发态碰撞效应。利用禁戒跃迁首次测定了Mg3sns1S0(n=22~30)能级。 相似文献
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DNA荧光标示研究进展 总被引:2,自引:0,他引:2
DNA(脱氧核糖核酸)荧光标示技术是分子生物学中的一项重要技术,普遍应用于DNA测序、寡核苷酸杂交、荧光PCR等领域。本文综述了二十世纪八十年代以来DNA荧光标示方法(手动标示、自动标示)、标示试剂及其研究进展,介绍了DNA荧光标示的一些新的应用,并结合我国实际提出了有益的建议。 相似文献
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新型蓝光OLED材料和器件 总被引:4,自引:3,他引:1
基于有机材料的电致发光技术可以应用于超薄平面显示和有机固体激光器等方面,在近20年来取得了飞速的发展,基本实现了红、绿、蓝三基色发光.绿色材料发展最快,基本达到了商业化实用阶段,而红色和蓝色材料的问题较多,特别是稳定、高效率的蓝光更具有挑战性.综述了近期我们对蓝光材料的分子设计与合成,以及蓝光器件的一些研究.主要包括金属络合物2,3-二甲基-8-羟基喹啉锂和聚芴衍生物树枝状的聚芴化合物的蓝光材料,以及利用基激复合态实现蓝光的电致发光器件.通过光致发光、电致发光光谱以及电压-电流-发光亮度特征曲线等研究了这些发光材料和器件的性质.现在蓝光器件的色纯度和工作寿命还有待提高. 相似文献
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We observe the photorefractivity without bias voltage or prepoling in a bifunctional photorefractive polymer. The maximum two-beam coupling gain is measured to be 126cm^-1 at zero bias voltage. The sample is considered to be poled by the photoinduced longitudinal electric field, which is formed due to the light intensity gradient along the light path. The expression of the electric field was deduced. The energy transfer direction between two writing beams and light intensity dependence of the two-beam coupling gain coefficient is predicted to be consistent with the experimental results. Furthermore, the dependence of the two-beam coupling gain coefficient on external applied electrical field is measured and this experiment verifies the existence of the photoinduced longitudinal electric field. 相似文献
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