文本分析技术文献综述

文章运用文献综述的方法,筛选多篇文章,对文本分析技术的不同种类与方法进行介绍,并对不同方法在文献中的运用进行梳理,区分不同方法的特征。     

浅谈现代分析方法和技术在药物分析中的应用

讲解了药物分析的方法，包括色谱法、光谱法等检测方法的应用过程，对于药物分析进行原理和适用范围的分析。对这些检测方法进行了比较和分析，对近年来进行的教学实验进行了总结分析。     

浅析PLC过程控制常见故障分析

本文笔者通过多年的实践经验对PLC系统故障检测方法进行简单介绍,对常见故障进行了阐述,并对解决故障的方法进行了探讨。     

公司债券和股票的收益率相关性实证研究

本文首先对股票风险以及股票风险管理理论的发展脉络进行了梳理与介绍。之后本文对VaR方法进行了详细的介绍,包括其来源、定义、特点和不足之处。接着对VaR的三种主要计算方法进行了介绍,并对每种方法的优缺点进行了分析。最后提出了基于VaR的每单位风险收益,用单位风险收益来进行股票组合管理,然后使用模拟投资组合对此进行实证分析,并对分析结果进行了总结与展望。     

动态规划方法在配送线路优化中的应用研究

应用图论的方法对配送线路进行优化的缺点是,当线路复杂时计算较为烦琐,而应用动态规划的方法能有效解决这个问题。本文从理论上应用动态规划的方法对共同配送线路进行优化,并应用此方法对实际问题进行计算。     

试论核电运行财务模型中相关成本费用的会计处理

对核电运行财务模型中的相关成本费用进行会计处理,能够有效提高核电站在运行过程中成本费用的管理质量。基于此,本文将对核电运行财务模型中对相关成本费用进行会计处理的意义进行简单介绍,并对核电运行财务模型中相关成本费用的会计处理方法进行研究,其中主要包括乏燃料费的会计处理方法、大修理费用的核算处理方法、延长折旧期限的会计处理方法以及增值税返还费用的会计处理方法四方面内容。     

企业合并核算方法“购买法”与“权益结合法”的比较探究

我国企业合并的会计准则对两类企业合并采用两种不同的会计处理方法,即权益结合法和购买法。两种不同会计处理方法对企业财务产生不同的影响,本文对两种不同的会计处理方法的差异进行了比较分析以及对两种会计处理方法并存进行了研究分析。     

浅谈宗地地价计算

本文围绕在城市地籍管理中如何进行土地估价这一主题,对土地估价的一些原理与方法进行了论述,并对其估价的方法进行了研究,介绍了进行土地估价的程序.     

基于SARIMA-BP神经网络方法的汽车销量预测研究

对汽车销量时间序列的预测方法进行了研究,针对汽车销量影响因素表现出的多样性,应用灰色关联分析法对其进行筛选。针对汽车销量时间序列表现出的线性特征和环境动态变化导致的非线性规律,单一的线性预测方法和非线性预测方法都无法满足时间序列的预测要求。提出了一种SARIMA-BP神经网络预测方法,利用SARIMA方法对时间序列的线性部分进行建模,利用BP神经网络方法对时间序列的非线性部分进行建模。仿真结果表明,SARIMA-BP神经网络方法比单一模型的预测准确率更高。     

我国品牌价值评估方法探讨

本文介绍了国内外比较有影响力的品牌价值评估方法,并对各种方法的特点进行了对比研究,最后对我国品牌评估方法的局限性与现状进行了探讨。     

Seeing through a Glass Onion: broadening and deepening formative research in social marketing through a mixed methods approach

ABSTRACT

The purpose of formative research in social marketing is to understand the target audience to generate consumer insight, which informs the planning, development and initial implementation of social marketing programmes. Focus groups, interviews or surveys, all of which are self-report methods, are the most commonly reported methods employed in formative research. Reliance on a relatively narrow range of methods may constrain understanding and insight gained during formative research. This paper challenges social marketers to mix methods or use multiple methods and research perspectives to generate a broader understanding of the consumer and the context in which they behave. A case study is used to demonstrate how mixed methods were used in a formative research study to inform the development of a social marketing programme designed to change eating behaviour. Challenges of mixed methods are detailed along with recommendations for future research.     

商业银行信用风险评估方法研究述评

信用风险评估是商业银行信用风险管理的首要工作和关键环节。本文对国内外商业银行信用评估方法进行述评,在比较分析现行信用风险评估主要方法的基础上,指出了各种评估方法的利弊,为今后商业银行信用风险评估方法的研究提供参考。     

The Purposes of Multivariate Data Analysis Methods: an Applied Commentary

Unlike univariate and bivariate statistical methods, multivariate statistical methods are capable of analyzing more than one relationship at a time. There are a number of multivariate data analysis methods, each with its own purpose. For nonexperts in statistical analysis, it can be daunting to determine what method is appropriate for a given application. The goal of this commentary is to introduce the multivariate data analysis methods in practical terms that do not require a strong statistical background. The emphasis is describing the purpose of each method, so that readers can choose the methods appropriate for their research questions. The use of multivariate statistical methods in the Journal of African Business also is explored.     

试论综合资金成本率的计算方法

目前需要通过了解现行计算个别资金成本率方法的本质特征和计算综合资金成本率方法的局限性 ,才能探索综合资金成本率计算的内容、特点及其规律性 ,从而应用统计学原理研究综合资金成本率的科学计算方法 ,找出综合相对法和改进加权综合法等多种准确而且简便的新方法 ,来比较分析各种方法的异同点及其适用性和有效性。     

A comparison of importance weights and willingness-to-pay measures derived from choice-based conjoint, constant sum scales and best–worst scaling

We review the measurement of product attribute importance, and find little consensus in definition or measurement methods. We compare four measurement methods: 1) two direct methods whereby respondents report the importance of attributes using best–worst scaling or constant sum scales, and 2) two indirect methods derived from discrete choice experiments. Our comparisons rely on previous findings that choice experiments are externally valid to use as the standard. We find high agreement within direct or indirect methods, but less agreement between direct and indirect methods. Our results also demonstrate that inferences derived from indirect measures appear to be susceptible to context effects related to the particular attributes a researcher chooses to investigate. We discuss implications for current and future research.     

7种甲型H1N1流感病毒核酸检测方法的比较和验证

[目的]比较和验证7种甲型H1N1流感病毒核酸检测方法,筛选出可用于实验室日常检测的方法,并证实实验室具有正确操作这些方法的能力。[方法]应用7种方法检测甲型H1N1流感病毒核酸,包括5种SYBR Green Ⅰ荧光RT-PCR法和2种Taqman探针荧光RT-PCR法的商业试剂盒,用于方法比较和验证的参考样品包括猪流感H1N1病毒核酸、2009年新甲型H1N1流感病毒核酸、能力验证样品等不同来源的核酸。[结果]2种预期用于猪流感H1N1病毒核酸检测的SYBR Green Ⅰ荧光RT-PCR法均能达到预期目的;3种预期用于2009年新甲型H1N1流感病毒核酸检测的SYBR Green Ⅰ荧光RT-PCR法均无法区分2009年新甲型H1N1流感病毒核酸和猪流感H1N1病毒核酸;2种Taqman探针荧光RT-PCR试剂盒均能正确检出2009年新甲型H1N1流感病毒核酸,但只有1种可检出能力验证阳性样品。[结论]5种SYBRGreen Ⅰ荧光RT-PCR法中有2种能用于猪流感H1N1病毒核酸的检测,另外3种不能用于新甲型H1N1流感病毒核酸的检测;2种Taqman探针荧光RT-PCR法的商业试剂盒能用于2009年新甲型H1N1流感病毒核酸的检测。     

Two new methods for estimating structural equation models: An illustration and a comparison with two established methods

The application of structural equation models (SEMs) is common in marketing and the behavioral sciences. Accordingly, the exploration of more effective methods to estimate SEMs is also a popular area of research. [Croon, 2002] and [Skrondal and Laake, 2001] have each proposed a new method for estimating SEMs, but since these proposals nearly a decade ago, these methods have been mostly overlooked by applied researchers. We suggest that reasons for this oversight may include not only a lack of guidance in implementing these new methods but also the absence of a formal comparison to review these new methods relative to the more familiar maximum likelihood structural equation modeling (MLSEM) and partial least squares (PLS). In this paper, our goal was to make the Croon and Skrondal-Laake (SL) methods more accessible to applied researchers. We first provide a step-by-step illustration of how to implement the Croon and SL methods. We also present the first comprehensive evaluation of the new methods relative to MLSEM and PLS. From this evaluation, we can better appreciate the circumstances under which these new methods are preferable to MLSEM and PLS. Thus, we intend to help readers understand how and when to apply these new methods.     

脉冲压缩信号的特点,产生及压缩方法

综述了３种脉压信号的性能特点、适用场合、产生方法及压缩方法，并给出了多数现代雷达采用的全数字式脉中压缩技术和为提高脉冲压缩性能所采用的技术。     

变动成本法与完全成本法的比较分析

变动成本法与完全成本法是两种比较重要的成本核算方法，这两种方法在很大方面存在着不同。着重分析两种计算方法在理论上的差异以及在实务计算中的差异。