基于BP算法的地震资源勘探废道处理技术研究

针对地震勘探数据采集工作中存在大量废道的问题,提出了一种基于BP神经网络的废道自动切除方法。通过对废道的产生机理和干扰特性的深入分析,提取能够反映废道本质特征的参数,结合BP神经网络强大的模式识别和自主适应能力,设计了一个三层的BP神经网络结构;最后,采用实际地震资料对处理算法进行验证。结果表明,该方法废道处理的准确率高、处理速度快,并且具有良好的适应性,能够满足地震勘探工作对废道处理的要求。

一种基于模型的海上地震资料中废炮废道的检测方法

首先选择一质量好的单炮记录作为初始模型，并以此为参考检测相邻的炮记录，然后分析相邻炮各相同道号之间的相似性及振幅差的级别，寻找异常道和野值；检测第二炮时，再以第一炮为参考模型，依此类推，向外逐步进行模型约束自动检测，最后得到一废炮、废道编辑库文件。该方法为大面积海上三维地震资料预处理提供了方便，不仅节省了时间、人力，而且减少了材料消耗。

基于奇异值分解的废道自动识别算法

在地震资料处理中,废道检测是一项基础性工作,对后续处理进度和质量有较大影响.奇异值分解技术广泛应用于地震资料处理,本文首次将奇异值分解应用于废道识别中,给出一种基于奇异值分解的废道自动识别算法,通过提取平均振幅、主频、过零点个数、相关系数和衰减因子等5个地震道属性特征,利用奇异值分解技术找出正常道所具有的属性特征向量,根据向量距离找出废道,最后通过实际生产所用地震资料进行了测试验证,结果表明,本算法可以快速准确地识别废道.

廢省佛教:李淵武德九年廢省寺觀的再認識

武德七年國子學釋奠後的三教論衡上,李淵下詔令道先、儒次、佛末,這只是此次論衡的三教出場次序,而非三教之次序,也是李世民貞觀中詔命佛前道後的預演。武德九年,李淵下詔廢省寺觀,此前他本欲接受傅奕建議全面廢佛,因李建成、裴寂等反對而有所退讓,變廢毁馬沙汰。然沙汰對象卻是絕大多數寺、僧,故與唐武宗滅佛相類,亦具廢佛性質,只是程度遠不及。這個足以改寫唐代佛教史的大事件,因玄武門之變而止,佛教因而逃過一劫,對僧團乃至唐初政局也有很大影響。

神经网络自动道编辑的改进与应用

针对地震单炮的地球物理特征,将单炮划分为三个区域,利用各个区域的信号特征作为神经网络的输入神经元,通过网络的组织学习能力,来预测废道的类型,之后通过相关性等道间属性来对预测的废道进行二次判别。该方法提高了废道识别的准确率,有效的降低了网络的学习时间,具有更明显的地球物理特征。实际资料应用证明该方法具有良好的适应性。

Effect of dietary supplementation with discardednutrient medium of Cordyceps militaris on layingperformance and diversity of intestinal flora in

The aim of the experiment was to explore the feasibility of discarded nutrient medium of Cordyceps militaris as feed in the production of laying hens. 100 g/kg, 200 g/kg, 300 g/kg of discarded nutrient medium of Cordyceps militaris were added to the basal diet of laying hens. The results showed that the optimal addition of discarded nutrient medium of Cordyceps militaris in the diet of laying hens was 10%. According to the results of measuring the conventional indicators of eggs, the weight of eggs produced by laying hens fed with discarded nutrient medium of Cordyceps militaris was higher than that of laying hens fed with ordinary laying hens. The content of interleukin^(-1)(IL-1) in the experimental group was significantly higher than that in the control group, and the concentration of IL-1 increased by 141.5 pg/mL, which indicated that the application of discarded nutrient medium of Cordyceps militaris effectively improved the immunity of laying hens. The high-throughput analysis of the intestinal contents of the two groups of laying hens showed that the microbial population abundance of the intestinal tract of the experimental group was greater than that of control group, and the application of discarded nutrient medium of Cordyceps militaris increased the diversity of bacteria in the intestinal tract of laying hens. In addition, the sensitivity of some pathogenic bacteria in the intestinal tract of chickens to drugs was also increased, thereby reducing the use of antibiotics. The secondary utilization of discarded nutrient medium of Cordyceps militaris has great development and utilization prospects, which provided a scientific reference and basic theoretical basis for the development of discarded nutrient medium of Cordyceps militaris as feed in the production of laying hens.

试论青州龙兴寺窖藏佛像被毁的时间和原因

山东青州龙兴寺佛造像毁于宋徽宗宣和元年 (公元 1119年 )废佛改道的诏令下达以后 ,佛造像窖藏系龙兴寺佛教徒集中收藏。