Adsorption and stabilization of nano-TiO2 particles in a concentrated dispersion

The quantitative adsorption behavior of a hyperdispersant onto nano-TiO2 particles has been characterized by using FTIR(Fourier transform infrared) spectroscopy,NMR(nuclear magnetic resonance) and a negative adsorption method.The intrinsic adsorbed amount of hyperdispersant was(1.05±0.09) mg/m2.Thickness of the adsorbed layer was(4.66±0.42) nm.There was(74±7)% wt water in the adsorbed layer.In the hyperdispersant molecule,the anchoring group of the amide group attached frmly to the nano-TiO2 particles,and the solvatable chains of comb-type structure exhibited the effective steric stabilization.     

岩土锚固技术在江门市的应用与发展

岩土锚固技术是支护与加固不稳定岩土经济而安全有效的方法。它在江门市的应用起步晚、时间短。为了推动这一技术的发展，我们调查统计了江门市自１９９４年应用该技术以来的工程实例资料，分析了它在本市的应用现状及存在的问题，提出了解决问题的研究方向。     

钟声的奥秘--《枫桥夜泊》新探

对张继的《枫桥夜泊》，历史上有过很多种探讨。但这首诗的魅力究竟何在，而使它久传不衰呢?钟声所表达的禅机正是破解这个谜的关键所在。     

Do forecasts produced by organizations reflect anchoring and adjustment?

In attempting to improve forecasting, many facets of the forecasting process may be addressed including techniques, psychological factors, and organizational factors. This research examines whether a robust psychological bias (anchoring and adjustment) can be observed in a set of organizationally-produced forecasts. Rather than a simple consistent bias, biases were found to vary across organizations and items being forecast. Such bias patterns suggest that organizational factors may be important in determining the biases found in organizationally-produced forecasts.     

陈村重力拱坝裂缝加固方案及其效应初探

陈村重力拱坝在施工和运行过程中，坝体下游面出现了一条较大裂缝。在分析以往跨缝插筋和改性环氧灌浆处理效应的基础上，提出了预应力锚索加固处理方案，并对锚固力大小，作用位置，加固后的应力状态等进行探讨，得到了较合适的锚固力及应避免的不利水位，其方法可供深入研究大坝加固效应的参考。     

拉力集中型锚索作用效果的数值模拟分析

通过FLAC3D程序,用实体单元模拟了岩体和砂浆体,用结构单元来模拟锚索,对锚索施加预应力时采用的建模方法是在边坡和锚索间建立刚性连接,代替在锚头的位置施加均布力的方法,建立预应力锚固数值仿真模型。通过模拟试验,分析了岩体单元以及砂浆体单元的应力云图等,更加清晰地显示了拉力集中型预应力锚索作用下岩体沿锚索轴向的应力、砂浆体应力分布等情况。     

广东虎门大桥东锚碇岩体稳定性分析

阐述了锚碇区工程岩体的基本特征，并按国家岩体质量标准对工程岩体质量进行分，东锚碇体在虎门大桥主缆拉力作用下的稳定性分析分为物理模拟拔试验以及计算模型分析两部分，分析结果表明：在不考虑地地震力作用的情况下，锚碇岩体稳定系数大于２；随着地震加速度的增加，岩体稳定性急剧下降。     

Inconspicuous anchoring effects generated by false information

The impact of false information on numerical judgments was examined on young normal subjects by an event-related potential （ERP） experiment. To imitate the judgments in real world, we ensured the subjects acknowledged of the target task. The behavioral results found that both uncertain information and false information assimilated the final estimates： higher after higher anchors and lower after lower anchors; and false information caused a weaker anchoring bias than uncertain information. ERP results provided further electro- physiological evidence for the mechanism of anchoring. In the early phrase, it was an accessibility-dominated process in which two kinds of anchors elicited an N300 component related to the accessibility of anchors propositions. The knowledge relevant to targets joined the process in the late phrase, which caused a larger amplitude of late positive component （LPC） for implausible lower anchors than that for plausible higher anchors. Source analysis showed that medial frontal gyrus, whose activity was suggested to signal the need of adjust- ment, was more reliable to explain the LPC elicited by implausible lower anchors. Therefore, we suggest that accessibility is facilitated when the external anchor is consistent with the world knowledge, and adjustment is initiated when the external anchor is inconsistent.     

基于改进RetinaNet的行人检测算法

为提高实际应用场景中行人的检测精度,提出使用高分辨率特征提取网络HRNet（High-Resolution Representation Network）并引入Guided Anchoring机制对RetinaNet算法进行改进,维持了特征图在特征提取过程中的高分辨率信息,同时使网络中的锚框自适应生成,提高了算法的检测精度。结果表明：该改进算法在Caltech行人数据集上取得了0.905的平均精度均值（mean average precision,简称mAP）,相比于标准的RetinaNet算法提高了6.0%,在每帧图像尺寸为1280×720像素的视频上检测速度达到了19FPS（每秒检测帧数） ,达到了检测精度与检测速度的均衡。     

FAST地锚基础工程中的若干问题探讨*

FAST工程主动反射面为一半径300 m、口径500 m的球冠面,是一种基于柔性基底的预应力整体索网结构,索网包括2225个主索节点及下拉索驱动装置和地锚。由于台址岩土单元复杂,地锚点多、分布范围广、定位精度要求高、与场地其他基础设施的相互干涉大,给地锚基础的设计带来了一定的难题。本文针对FAST地锚基础中的特殊问题一一展开研究:以工程地质调查和测绘为基础,通过抓台址区主控因素,集合影响台址岩土性质的自然因素,对岩土单元进行了合理的分区;通过建立台址开挖后的BIM模型,利用极射投影技术实现了地锚中心点的精确定位;利用极射投影结果,对设备之间的相互干涉情况进行了调节和处理。研究成果最终确保了FAST地锚基础工程的顺利竣工。