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Search Results: 1 - 10 of 247045 matches for " <br>赵亮 "
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Behavioral Responses of Two Species Passerine to Predation Risk During Breeding Period

ZHAO Liang,<br>赵亮
动物学研究 , 2005,
Abstract: Life-history theory predicts that differences in reproductive effort and residual reproductive value among species should result in differences in the level of risk that parents are willing to tolerate to themselves versus their offspring. Here, we tested the prediction that parental investment decisions were correlated with nest sites by comparing risk-taking behaviour in two species of passerines (small skylark Alauda gulgula and horned lark Eremophila alpestris) in alpine meadow, from 2002 to 2004. We experimentally manipulated predation risk by presenting models and measured the willingness of parents to feed nestlings. The results shown: Response of the horned lark to human intrusion was a significantly stronger than the small skylark; Both species responded to predators by decreasing the length of attendance time, reducing the feeding rate and increasing the length of elapsed time; There was significantly difference between the reproductive behaviour in the small skylark and horned lark in the natural condition, whereas, no difference in the predator condition; Males of both species had lower willingness to tolerate risk to themselves than females. Thus, those passerine species responded to predators by reducing investment in current reproduction and increasing probability of future survival. Our experimental results support the above prediction.
工程热物理学报 , 1988,
煤炭工程 , 2010,
Abstract: 本文比较分析了国内外矿井可行性研究报告编制的相同和差异,结合国外资本市场对于矿业投资所关注热点和要点分析,指出了国内可行性研究报告编制需要关注的内容。对国内矿业研究和提升风险控制能力以及适应国际化资本市场需求具有有益的指导意义。
东北大学学报:自然科学版 , 2015, DOI: 10.3969/j.issn.1005-3026.2015.08.031
Abstract: 为了分析沈阳市商品住宅市场情况,根据国内外编制价格指数的方法,结合沈阳市房地产市场的实际情况,采用特征价格法对沈阳市商品住宅价格指数进行研究.选择16个特征变量,采用半对数模型构建沈阳市商品住宅特征价格模型,并对模型进行检验,确定影响沈阳市商品住宅价格的14个特征变量及相互关系.通过价格指数计算公式,计算出2006年至2013年沈阳市商品住宅特征价格指数,得出沈阳市商品住宅价格增速正在逐年减缓的结论,并对未来市场可能出现的问题提出合理建议.
地球物理学报 , 2003,
Abstract: 在多相流动电磁波成像测井研究中,测量敏感场是设计测量仪器和研究图像重建算法的前提工作.本文用数值方法计算多相流动电磁波成像测井测量敏感场.根据测量探头电极阵列的对称性,将三维敏感场问题划分为轴向和横向两个平面问题,然后应用有限元算法求解两个平面电势分布问题,对于不同介质模型,计算各种测量条件下测量区域内电势分布,进而根据电势分布计算测量敏感场.结果表明测量敏感区域为发射电极到测量电极的弧形区域,在发射电极到测量电极的电势梯度线上,测量敏感函数近似于一个指数函数.
- , 2018, DOI: 10.16781/j.0258-879x.2018.08.0859
Abstract: 医学影像技术在疾病的检测、诊断和治疗中起着重要作用。由于人类专家经验的不稳定性,机器学习技术有望辅助研究人员和医师以提高影像诊疗的准确性和减少医疗资源的不均衡性。本文系统概述了深度学习技术的一些方法,介绍了医学影像学中的深度学习技术的应用研究,同时讨论了深度学习技术在医学影像中的局限性。
Medical imaging technology plays an important role in the detection, diagnosis and treatment of diseases. Due to the instability of human expert experience, machine learning technology is expected to assist researchers and doctors to improve the accuracy of imaging diagnosis and treatment and reduce the imbalance of medical resources. In this paper, we systematically summarized the methods of deep learning technology, introduced the application of deep learning in medical imaging, and discussed the limitations of deep learning technology in medical imaging
The Development of Z39. 50 and Its Application in China

Wang Xiaoling,<br>张奇,赵亮
现代图书情报技术 , 1999,
Abstract: The paper introduced the concept and development of ANSI/NISO Z39. 50 protocol in the world. And it analyzed the protocol application in the modern library information management system. 239. 50 client is more important and more necessary for most Chinese libraries. The paper gave some suggestions using for choosing modern library information management system.
Simulation of CFCs distributions in the North Pacific using a basin_wide ocean general circulation model with open boundary

ZHAO Liang~,<br>赵亮,徐永福
地球物理学报 , 2005,
Abstract: 利用一个开边界北太平洋海盆尺度环流模式模拟了北太平洋CFCs的吸收和分布.模式计算了CFC_11海气界面通量及其在海洋中的输运和再分布,考察了开边界对模式模拟结果的影响以及开边界模式中不同沿等密度面扩散系数的影响.打开南边界可以很好地改善赤道以南海区的CFC_11模拟.增加沿等密度面扩散系数使得137°E和165°E断面模拟的高CFC_11水向南、向下输送的强度和影响范围都有明显增大,能很好地改善西北太平洋的模拟结果.西北太平洋是CFC_11的一个重要的汇区,此外在赤道东太平洋上升流区还存在一个小的汇区.

ZHAO LIANG,<br>赵亮,吴锡令
地球物理学报 , 2003,
Abstract: The sensitivity field is of great importance for the optimal design of the Electromagnetic Tomography (EMT) in multiphase flow well logging tools and images reconstruction. We calculate using a numerical method. For the facility of analysis, the calculation is performed in 2 planes based on the symmetry of the sensor, though the sensitivity field is 3 dimensional. The analysis contains 2 connected steps. First, the potential distribution within the measure array is calculated using FEM (Finite Element Method). Then, the gradient of the potential is acquired according to the numerical computation. The result shows that the sensitivity field has an arc-shape within the region from transmitting electrode to measuring electrode, and it can be expressed approximately using an exponential function.
Analyzing the Features of Horizon System Customization

Zhang Qi Zhao Liang,<br>张奇,赵亮
现代图书情报技术 , 1999,
Abstract: The paper discusses the definition and methods of system customization and analyzes the features and ways of Horizon system customization,which provides plenty of information to the research of library automation in China.
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