进城农民工子女学校适应性研究——基于安徽省合肥市29中的一项调查研究

以合肥市29中的271名初中生为被试,采用问卷法和访谈法对进城农民工子女的学校适应性进行调查研究。研究结果：（1）进城农民工子女总体学校适应性不高;（2）被试在适应性量表中的行事效率和人际疏离维度上存在明显的性别差异,男生明显高于女生;（3）被试在适应性量表中各维度上存在明显的年级差异;（4）经过访谈发现,被试渴求得到社会各界的关爱。     

进化生态学的若干重要问题

在分析进化生态学的种种提法的基础上作者主张用Ｏｒｉａｎｓ＆Ｌａｃｋ的定义来规范进化生态学。生态适应是进化生态学的最基本概念，进化生态学就是关于生态适应进化规律的科学；作者还强调了进化生态学在生命科学和生态学中的地位以及它与生态遗传学的关系。此外，文中提到了进化生态学研究中存在的目的论倾向以及平衡理论中存在的问题。     

不同海拔三种橐吾属植物叶结构的适应意义

研究了分布于青藏高原东部3种橐吾属植物(掌叶橐吾、箭叶橐吾和黄帚橐吾)不同海拔高度9个居群的叶结构特征、空间位置及其存活策略;对一些适应性特征与高寒环境的关系进行了分析讨论.发现气孔密度、叶片厚度、海绵细胞和栅栏细胞层的分布及表皮毛和表面蜡质的覆盖程度随海拔的升高而增加,其中叶片厚度的增加主要是由于细胞间隙的增大;叶片空间位置在3种橐吾中没有出现一致性的变化;气孔大小、角质层厚度以及等面叶和异面叶与海拔变化无明显相关性,而后两种特征更多地代表着物种属性.研究结果显示在植物对高寒环境的适应及其存活策略中,形态及结构的改变起重要作用,并且这些改变具多样性.就叶的形态结构而言,3种橐吾属植物对高寒环境的存活对策是:黄帚橐吾主要采取逃避策略,箭叶橐吾为耐受适应,而生长在林下遮阴微生境中的掌叶橐吾主要表现为对稀薄空气和低氧胁迫的适应.     

用“以人为本”的管理理念优化馆员心理

阐述了“以人为本”的前提,提出“以人为本”应重视个体的自我心理调适、增强个人竞争心理和突出人性化管理。     

人眼的色适应对荧光屏显示色貌的影响

用双眼不对称匹配法研究人眼在观察计算机视觉显示终端彩色监视器荧光屏时,视觉系统对复杂背景的色适应及其对荧光屏显示色貌的影响.研究结果表明,背景的平均颜色和目标与背景的色差及亮度差对色适应引起的色位移有显著的影响.在定量估计人眼对复杂背景的色适应引起的色貌变化时,可以把视觉系统看作一个积分响应灵敏度取决于背景颜色和亮度平均值的信息处理系统。     

广告翻译——选择与顺应

作为实用翻译的一种,广告翻译的功利性决定了其翻译不可能是简单机械地重现原文,更不能死守传统的所谓“忠实”的翻译观。为了适应商业社会激烈的竞争,本文根据J．Verschueren的语言顺应理论提出:广告翻译是一个通过不断选择来顺应目的语的语言和文化,从而成功完成广告翻译的任务,达到广告目的的一个过程。同时指出应该在哪些方面作出顺应。     

Effects of pattern shape on adaptation of dLGN cell

Pattern adaptation is one of the fundamental sensory processes in the visual system. In this study, we compared pattern adaptation induced by two types of sinusoidal drifting grating in dLGN cells of cat. The two types of grating have the same parameters (e.g. spatial frequency,temporal frequency and contrast) except their pattern shapes,one of which is normal grating and the other annular grating.The results suggested that the annular grating elicited stronger response and stronger pattern adaptation than the normal grating. This is consistent with the adaptation and aftereffect to the two types of drifting gratings seen in psychology and may reflect the subcortical neural mechanism underlying these psychological phenomena.     

延迟受限细粒度可伸缩视频流媒体平滑传输

在异构网络上可伸缩视频传输中,为了解决由于网络的时变性特征所引起的编码码流与网络带宽不适配所引起的问题,该文提出了一种控制可伸缩码流的传输,使之适应带宽的时变特性,同时能够保证平滑的重建视频质量的传输调度算法。该文在延迟受限的条件下,通过控制每一帧增强层码流的传输,使得带宽变化所带来的视频质量波动显著下降,从而有效地提高了视频的总体质量。仿真试验表明,该方案在提高视频客观质量的同时提高了其主观质量,有效提高了视频传输的鲁棒性。同时,该文所提出的算法复杂度较低,能够应用在实际的流媒体传输系统中。     

Neuroglobin mutation associated with hypoxia adaptation in Tibet chicken

Globin protein family plays an important role in storing and transporting oxygen. As a newly reported globin, the revealed function of neuroglobin includes binding and storing oxygen as well as facilitating the utilization of oxygen in neuronal cells. In the present study, mutations in exons of chicken Ngb gene were identified with the method of sequencing and created restriction site PCR in Tibet chicken and other four lowland chicken breeds. The mutations of Lys-2224(E4)-Asn and Ser-2279(E4)-Gly were identified in exon 4 of the gene. The Lys-2224(E4)-Asn mutation existed only in Tibet chicken and the mutation frequencies increased with increasing altitude. Analysis of the haplotype and diplotype of the two mutations in Tibet chicken populations of different altitudes showed that the frequencies of TG haplotype and TTGG diplotype also increased with increasing altitude, while the reverse tendency was found on GGAA diplotype. Under the hypoxic simulation incubation, the main haplotype was TG in living embryos and GA in dead embryos. The results showed that the Lys-2224(E4)-Asn mutation may be a specific mutation associated with hypoxia adaptation in Tibet chicken.     

Neuroglobin mutation associated with hypoxia adaptation in Tibet chicken

Globin protein family plays an important role in storing and transporting oxygen. As a newly reported globin, the revealed function of neuroglobin includes binding and storing oxygen as well as facilitating the utilization of oxygen in neuronal cells. In the present study, mutations in exons of chicken Ngb gene were identified with the method of sequencing and created restriction site PCR in Tibet chicken and other four lowland chicken breeds. The mutations of Lys-2224(E4)-Asn and Ser-2279(E4)-Gly were identified in exon 4 of the gene. The Lys-2224(E4)-Asn mutation existed only in Tibet chicken and the mutation frequencies increased with increasing altitude. Analysis of the haplotype and diplotype of the two mutations in Tibet chicken populations of different altitudes showed that the frequencies of TG haplotype and TTGG diplotype also increased with increasing altitude, while the reverse tendency was found on GGAA diplotype. Under the hypoxic simulation incubation, the main haplotype was TG in living embryos and GA in dead embryos. The results showed that the Lys-2224(E4)-Asn mutation may be a specific mutation associated with hypoxia adaptation in Tibet chicken.