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Search Results: 1 - 10 of 929 matches for " 李佳? "
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光学相关模式识别
李佳
红外 , 2001,
Abstract: 建模(model-based technique)、神经网络(neural network)和相关模式识别(correlation pattern recognition,CPR)是实现机器视觉和模式识别最常用的三种方法.与其他两种方法相比,CPR的优点在于:它是一种不需要特殊数据处理的独立于传感器的识别方法,可广泛用于不同的传感器获得的图像、数据处理,因此更适于工作在多重传感的环境下;CPR的识别原理使这种方法具有多目标识别和较好的抗噪声性能.它的相关输出结果的质量通常取决于匹配滤波器和匹配图之间在目标区形体轮廓上的近似性,受限于图像尺寸而不是需探测目标的数目,因此在使用其它的识别方法时,由于图像景物复杂、模糊和物体数目多而带来的庞大计算量会造成实际应用中的障碍,对于CPR这种限制几乎不存在.
对我国网络设备企业采购战略的探讨
李佳
科技进步与对策 , 2002,
Abstract: 分析了网络设备采购环境概况,阐述了网络设备采购的战略管理,对采购战略实施中若干问题进行了探讨。网络设备企业企业采购战略中国战略管理过程监控
农业科技成果转化的现实矛盾和对策研究
李佳
河南农业科学 , 2013,
Abstract: 为加快农业科技成果转化,推进现代农业发展,从农业科技成果创新、转化、应用全过程分析了科技成果转化中存在的主要矛盾和问题,提出加强农业科技集成创新、完善科技成果评价和转化机制、提高农民组织化水平和创新成果转化推广方式等加速成果转化的对策和建议。
浅谈青州北城满族的婚礼民俗
李佳
东南文化 , 2005,
Abstract: ????婚姻是维系人类自身繁衍和社会延续的最基本的制度和活动,本文主要介绍了山东古城青州的满族婚礼民俗及满族婚俗体现的诸多的功能。
填海软基处理工程现场监测成果与加固效果分析
李佳
南水北调与水利科技 , 2014,
Abstract: 针对某填海软基处理工程软基处理方法与现场监测项目,对堆载预压法加固处理淤泥软基的表层沉降、分层沉降、孔隙水压力等监测成果及加固效果进行了分析,结果发现,堆载施工期沉降约占总沉降的65%,加荷间歇期沉降随时间近似呈线性增加;满载预压期沉降约占总沉降的35%,沉降随时间近似呈抛物线增加。从分层来看,表层6m淤泥层沉降占总沉降比例平均值为53.9%,是沉降发生的主要部分,而淤泥层下卧层沉降占总沉降量比例平均值为22.8%,预估地基沉降应考虑下卧层沉降。淤泥表层与底层超静孔压比中间层消散快,满载6个月时不同深度淤泥超静孔压消散约80%,满载8个月时超静孔压消散约85%~90%。场区淤泥加固后,物理力学性质及强度均得到明显改善,加固效果十分明显。
海相淤泥土性指标的相关性分析
李佳
南水北调与水利科技 , 2014,
Abstract: 正确度量相同地质单元土性指标之间的相关性,有助于解决实际工程中的小样本问题。利用深圳某吹填场地软基海相淤泥的物理性质和力学性质指标,采用线性回归方法,分析了吹填淤泥和原状淤泥的各种力学性质、物理性质指标的相关性,并建立了相关关系回归方程。研究表明,根据吹填淤泥土性指标经验回归方程,利用塑限或液限的一个指标和另一个土性指标就可以估算出吹填淤泥的其它土性指标;而根据原状淤泥力学性质指标与物理性质指标之间的经验回归方程,也可以估算出吹填淤泥一些较难通过试验确定的力学指标。研究结果对于海相淤泥软基处理工程土性指标选取具有重要的应用价值。
不同干燥方法对海鳗鱼片几种内源酶活力的影响
李佳
- , 2015, DOI: 10.13982/j.mfst.1673-9078.2015.8.040
Abstract: 干燥能赋予水产品独特风味,而这些风味物质的形成与内源酶有关。本实验通过检测冰温真空干燥,真空冷冻干燥和热风干燥海鳗鱼片中对滋味起主要作用的内源酶(AMP脱氨酶、酸性磷酸酶、组织蛋白酶B和亮氨酰氨肽酶)活力和其催化形成的滋味物质(IMP和游离氨基酸)的含量,以探究不同干燥处理对内源酶的影响。结果表明:干燥后AMP脱氨酶、酸性磷酸酶、组织蛋白酶B和亮氨酰氨肽酶潜在活力均降低,真空冷冻干燥鱼片的4种酶活力保存率最高,分别为92.99%、85.58%、65.53%和54.26%,冰温真空干燥次之,热风干燥最低。不同干燥方法鱼片中IMP含量间有显著性差异,冰温真空干燥鱼片含量最高,从最初的174.37 mg/100 g(干基)增加到625.08 mg/100 g,且游离氨基酸含量增幅最高,达33.07%。因此,冰温真空干燥的海鳗鱼片,4种酶活力保存较好,滋味物质含量最高。
Drying can endow aquatic products with unique flavor, whose formation is related to endogenous enzymes. In this study, the effects of different drying methods on enzyme activities and their metabolites inosinemonpho sphate (IMP) and free amino acid contents of Muraenesox cinereus fillets were investigated. Several enzymes playing the leading role in taste substances (such as AMP deaminase, acid phosphatase, cathepsin B and leucyl aminopeptidase) were selected. The drying methods included controlled freezing-point vacuum (CFVD), vacuum freeze drying (VFD) and hot air drying (HAD). Results showed that potential activities of the four enzymes mentioned above were decreased after drying. The highest retention of enzyme activities of fillets was observed in VFD, representing 92.99%, 85.58%, 65.53% and 54.26%, respectively, followed by CFVD. While HAD fillets had the lowest enzyme activities. The IMP and free amino acid contents in CFVD fillets were significantly higher than those in other treatments. IMP content increased from 174.37 mg / 100 g (dry basis) to 625.08 mg/100 g and free amino acid content increased by 33.07%. Therefore, four kinds of enzyme in CFVD fillets reach better retention in activities and the highest conversion rate.
PA误差下的半参数回归模型小波估计的强相合性
Strong Consistency of Wavelet Estimation in a Semiparametric Regression Model under PA Sequence Errors
 [PDF]

李佳, 李永明
Pure Mathematics (PM) , 2012, DOI: 10.12677/PM.2012.24027
Abstract: 本文讨论了误差为正相协(PA)序列的半参数回归模型,在适当的条件下,利用小波估计方法研究了参数分量和非参数分量的小波估计量的强相合性。
Consider a semiparametric regression model with PA sequence errors. In this paper, we study the strong consistency of the wavelet estimators for parameter component  and non-parameter component  under suitable conditions.
现金流权和控制权分离对上市中小板企业成长性的影响研究——基于托宾Q值指标
Study of Effect of Separation of Cash Flow and Control Rights on Growth of Small and Medium-Sized Board of Listed Companies—Based on the Tobin’s Q Value
 [PDF]

李佳, 钟美
Advances in Social Sciences (ASS) , 2016, DOI: 10.12677/ASS.2016.53069
Abstract:
本文以2014年我国上市中小板企业为样本,研究终极控股股东现金流权、控制权、两权分离度对企业成长性的影响。研究发现,现金流权与企业成长性正相关;控制权与企业成长性正相关;现金流权和控制权分离程度越大,终极控股股东对公司价值的侵蚀就越大,越会对企业的成长性造成负面影响。
This paper, based on a convenience sample of 2014 listed small and medium-sized enterprise board in China, studied the influence of cash flow rights, control power and two rights separation degree of the ultimate controlling shareholders on the enterprise growth. The findings show that cash flow rights and corporate growth are positive related; control power and enterprise growth are positive related; the greater the degree of separation of cash flow and control rights is, the greater the erosion of ultimate controlling shareholder to the company’s value is, resulting in the more negative impact on the growth of enterprises.
Fresnel积分的推广
A Generalization of the Fresnel Integral
 [PDF]

李佳, 梅雪峰
Pure Mathematics (PM) , 2016, DOI: 10.12677/PM.2016.63032
Abstract:
利用Jordan不等式及Cauchy积分定理,给出一类广义的Fresnel积分的值,它是通常定义下Fresnel积分的一种推广。
The present paper gives a generalization of the Fresnel integral by using of Jordan integral and Cauchy integral theorem.
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