论《嚎叫》及其电影改编

艾伦·金斯伯格是上个世纪美国文坛"垮掉一代"的代表诗人,其长篇诗作《嚎叫》在20世纪的美国诗坛占有举足轻重的地位。在他逝世13周年之际,美国影人拍摄了以他生平事迹和代表诗作《嚎叫》为蓝本的同名电影《嚎叫》,让这位活着时即备受争议的重要诗人又重回人们视野。文章主要从对影片的细致分析入手,结合现实生活中真实的金斯伯格与《嚎叫》一诗,详细论述影片对金斯伯格其人其诗的处理,从而更好地理解作为诗人的金斯伯格及其诗作。     

精细控压钻井溢流检测及模拟研究

针对现有钻井过程中溢流检测方法无法检测微溢流量,对深井和复杂井井控提出挑战,展开了精细控压钻井 溢流检测及模拟研究。研究中通过对比出入口微流量变化,提出了精细控压钻井溢流检测和分析方法;根据气液两相 流理论,建立了井筒气侵期间流动计算模型。将该检测方法应用于塔中某井进行试验,结果表明：精细控压钻井系统 溢流检测方法可以准确检测溢流的发生和累积溢流量;根据气液两相流模型,可以模拟精细控压钻井不同回压时井筒 流动参数的变化;该检测方法在现场试验中检测结果和模拟结果一致。精细控压钻井系统溢流检测方法能够准确检 测溢流发生,该检测方法具有可行性和可靠性,可对控压钻井发现和控制溢流提供了理论支持。     

基于风格解耦和自适应层实例归一化的图像翻译方法

针对当前无监督图像翻译方法在翻译过程中存在着图像内容变化过大、目标图像域风格传递不佳而导致生成的图像质量较低、多样性较差等问题,提出一种基于风格解耦和自适应层实例归一化的图像翻译方法.首先,采用基于解耦表示的自编码器作为模型的生成器,共享内容编码器来增强图像翻译的内容一致性;其次,在解码器中实现自适应层实例归一化运算,可以自适应地改变图像的风格,以改善风格传递的效果;再次,将随机风格编码融合至损失函数中,使得设计的模型具有生成随机风格图像的能力,来提升生成图像的多样性;最后,设计并实现了该方法,并在多个数据集上进行验证和分析.实验验证表明,与现有的无监督图像翻译方法相比,所研究的方法生成的图像质量较高,多样性较好.     

真彩色血液白细胞显微图像自动识别系统研究

人体血液白细胞的分类计数对于临床诊断有着重要意义,在国内普及的微机平台上,利用真彩色细胞图像所包含的丰富的多光谱信息,运用图像处理和识别技术,研制了真彩色血液白细胞显微图像的自动识别系统,有效地实现了白细胞的自动识别。     

纹影法的二维显示

本文讨论了纹影法的刀口位置,指出用一维刀口不能有效地显示二维位相梯度.在点光源情况下改用直角刀口就可对位相物进行二维显示。     

Wnt signalling regulates adult hippocampal neurogenesis

The generation of new neurons from neural stem cells is restricted to two regions of the adult mammalian central nervous system: the subventricular zone of the lateral ventricle, and the subgranular zone of the hippocampal dentate gyrus. In both regions, signals provided by the microenvironment regulate the maintenance, proliferation and neuronal fate commitment of the local stem cell population. The identity of these signals is largely unknown. Here we show that adult hippocampal stem/progenitor cells (AHPs) express receptors and signalling components for Wnt proteins, which are key regulators of neural stem cell behaviour in embryonic development. We also show that the Wnt/beta-catenin pathway is active and that Wnt3 is expressed in the hippocampal neurogenic niche. Overexpression of Wnt3 is sufficient to increase neurogenesis from AHPs in vitro and in vivo. By contrast, blockade of Wnt signalling reduces neurogenesis from AHPs in vitro and abolishes neurogenesis almost completely in vivo. Our data show that Wnt signalling is a principal regulator of adult hippocampal neurogenesis and provide evidence that Wnt proteins have a role in adult hippocampal function.     

Characterization and assessment of volatile organic compounds (VOCs) emissions from typical industries

VOCs play an increasingly important role in affecting air quality and threatening human health in China in recent years,where industry activities show a significant contribution to VOCs emission.In this article we report our long term study of industrial VOCs emissions of six major industries (vehicle manufacturing,printing,equipment coating,electronic manufacturing,furniture manufacturing and bio-pharming) on the aspects of emission characteristics,environmental impact and health risk assessment,and control challenge analysis with the purpose to obtain in-depth understanding of industry VOCs emissions and offer some original basements for national control and management of industry VOCs emissions.This study shows that all these industries give middle or low emission with total VOCs concentration less than 1000 mg/m3 at each exhaust pipe.Benzenes,esters,alcohols,ketones,alkanes,chloroalkanes and alkenes were detected as the major emission components and the most frequently monitored VOCs were benzenes,which varied obviously with different processes and industries.The environmental impact assessments indicate that vehicle manufacturing and benzenes should be prior controlled with the purpose to reduce air pollution.While,health risk assessments suggest that furniture manufacturing and chloroalkanes should be firstly controlled.Control analysis indicates that developing technologies with low cost and high efficiency and establishing and completing specific industry emission standards/regulations are the two key issues in VOCs emission management at present stage.     

2000年海南岛的甘蔗发展与布局预测

近年来,海南岛廿蔗生产发展很快。本文分析海南岛甘蔗生产的自然和社会经济条件,预测2000年甘蔗发展的规模与地区分布.     

基于十字方向滤波的指纹图像增强和细化

增强和细化是指纹预处理过程中的重要环节．提出了一种基于十字方向滤波的指纹增强算法,增强过程针对指纹的层次特征,利用十字方向滤波器对纹线边界的粘连现象进行了有效处理,并且修复了纹线中较短的断裂;在此基础上对边缘删减的纹线细化算法作了改进,引入了新的细化模板保护指纹趋势和细节点．实验结果显示,谊算法很好地保留了原指纹图像中的细节特征和纹理信息,减少了指纹特征的丢失．     

区间层次分析法—IAHP

将区间分析引入层次分析法，提出了区间层次分析法－ＩＡＨＰ，该法首先建立区间判断矩阵，通过区间运算，得到各元素对于总目标的区间权重矢量，便于决策者决定。