中国电信业经济影响的定量研究方法--兼论投入产出表的调整

对电信业的经济影响进行定量化研究过去大多采用计量经济学方法。本文在对这些方法进行总结的基础上，提出了采用投入产出方法的思路，并构建了相应的投入产出模型，同时对投入产出表进行了必要的调整，最后采用投入产出方法对20世纪90年代电信业的经济影响进行了实证研究。     

夏域物流需求预测方法研究

对区域物流需求预测的方法进行了研究,在对各单项预测模型进行选择和建立的基础上构建了组合预测模型,并且研究了确定权重系数的科学方法,同时将此方法应用到区域物流实例当中,运用组合预测模型对江苏省物流量进行了预测.     

断路器CY型液压机构常见异常现象的探讨

本文主要对CY型机构常见故障进行了列举,并对典型故障的处理方法进行举例,深入浅出的对液压机构常见的异常现象及处理方法进行了探讨。     

网络舆论对大学生健康教育的影响及教育对策研究

本文针对网络舆论对大学生健康教育的影响进行讨论分析,并对大学生健康教育进行了论述说明,提出了在互联网时代,大学生健康教育的重要性和迫切性,并对大学生健康教育方法提出了动态培养的观点,构建网络和谐论坛的方法,并对每种方法进行了论述分析。     

浅谈施工电梯地基的施工技术

本文对电梯施工及其管理进行了讨论.首先,分析了传统电梯安装方法的弊端,继而对无脚手架安装方法进行了简单论述,最后,对电梯的施工管理工作进行了具体阐述.     

变动成本法与完全成本法的比较及应用

由于变动成本法与完全成本法对固定制造费用的处理方法不同，导致了两种方法的差异，本文对两种方法进行了比较并对如何进行结合应用加以阐述。     

人力资本计量方法新探

本文对国内学者最新提出的基于马克思主义政治经济学的人力资本概念进行了简要分析,并对新定义的人力资本的计量方法进行了研究。文中引入资本收益率方法作为计算人力资本价值的基本方法,借鉴固定资产折旧和维护成本的计量方法对补偿可变资本的薪酬进行计量,借鉴最优生产要素组合理论提出了人力资本期望收益率的计算方法。     

高速公路路面与路基病害的成因分析及其评价方法

对高速公路路面和路基病害特性进行了详细的成因分析,并根据《高速公路养护质量检评方法》对路面和路基病害进行了评价,并对其评价方法进行了探讨。     

商誉会计处理方法的国际比较

本文阐述了商誉会计理论的现有模式，对商誉会计处理方法进行了国际比较，并对他们的处理方法进行了分析。     

基于流程节点的知识集成方法研究

提出了一种基于流程节点的知识集成方法,并对该方法的现实意义进行了分析。在对流程节点进行界定的基础上,构建业务流程模型;并对知识分类与表示进行了研究并构建了知识集成模型。     

How to Identify and Forecast Bull and Bear Markets?

Because the state of the equity market is latent, several methods have been proposed to identify past and current states of the market and forecast future ones. These methods encompass semi‐parametric rule‐based methods and parametric Markov switching models. We compare the mean‐variance utilities that result when a risk‐averse agent uses the predictions of the different methods in an investment decision. Our application of this framework to the S&P 500 shows that rule‐based methods are preferable for (in‐sample) identification of the state of the market, but Markov switching models for (out‐of‐sample) forecasting. In‐sample, only the mean return of the market index matters, which rule‐based methods exactly capture. Because Markov switching models use both the mean and the variance to infer the state, they produce superior forecasts and lead to significantly better out‐of‐sample performance than rule‐based methods. We conclude that the variance is a crucial ingredient for forecasting the market state. Copyright © 2016 John Wiley & Sons, Ltd.     

物流配送问题的研究文献统计与综述

针对2000-2008年关于物流配送问题的研究文献进行梳理和分析,按研究内容分为物流配送中心选址、系统内部作业与管理、专业市场物流配送模式、配送中心布局与建设、基于电子商务的物流配送、物流配送路径优化和物流配送车辆调度等七类,按研究方法分为运筹学方法、仿真技术、评价方法、单一遗传算法、遗传算法与其它方法结合、其它启发式算法、其它定量方法、现状分析与对策建议等八类,根据各类的研究统计,提出进一步研究的方向。     

Principles and algorithms for forecasting groups of time series: Locality and globality

Global methods that fit a single forecasting method to all time series in a set have recently shown surprising accuracy, even when forecasting large groups of heterogeneous time series. We provide the following contributions that help understand the potential and applicability of global methods and how they relate to traditional local methods that fit a separate forecasting method to each series:

• •Global and local methods can produce the same forecasts without any assumptions about similarity of the series in the set.
• •The complexity of local methods grows with the size of the set while it remains constant for global methods. This result supports the recent evidence and provides principles for the design of new algorithms.
• •In an extensive empirical study, we show that purposely naïve algorithms derived from these principles show outstanding accuracy. In particular, global linear models provide competitive accuracy with far fewer parameters than the simplest of local methods.

     

图解法求实长方法的变换推广及“形”“数”关系分析

图解法求实长的方法有三种,即旋转法、直角三角形法和换面法。三种方法既有联系又有区别,虽然作图形式不同,但三种作图方法的原理一致:都是依据正投影原理及直线的投影特性来求得实长,三种求实长方法的实质相同:直线AB的实长等于其三个几何尺度的平方根,即AB=(△X)2+(△Y)2+(△Z)2姨。三种方法互为变式:直角三角形法是换面法的简化形式,换面法是直角三角形法的一般形式,旋转法则可看成是直角三角形法和换面法的最简形式。三种方法中直角三角形法应用最广。三种方法都可以利用直角三角形的性质及代数计算来加以证明。     

UPI与SCL-90的相关性、替代性与互补性研究

大学生心理健康问题日益严峻,本文采用UPI和SCL-90两种方法测评了湖南某高校大学生心理健康状况,结果问题严重。然后着重对两种方法进行了检验,结果发现存在显著的相关性。接着对两种方法进行了回归分析,构建了相应的回归模型,表明了UPI和SCL-90两种方法具有相应的替代性与互补性。建议高校在大学生心理测评与干预工作上,将两种方法有机地结合运用。     

Statistical Surveillance. Optimality and Methods

Different criteria of optimality are used in different subcultures of statistical surveillance. One aim with this review is to bridge the gap between the different areas. The shortcomings of some criteria of optimality are demonstrated by their implications. Some commonly used methods are examined in detail, with respect to optimality. The examination is made for a standard situation in order to focus on the inferential principles. A uniform presentation of methods, by expressions of likelihood ratios, facilitates the comparisons between methods. The correspondences between criteria of optimality and methods are examined. The situations and parameter values for which some commonly used methods have optimality properties are thus determined. A linear approximation of the full likelihood ratio method, which satisfies several criteria of optimality, is presented. This linear approximation is used to examine when linear methods are approximately optimal. Methods for complicated situations are reviewed with respect to optimality and robustness.     

电子测量与仪器课程的教学方法探索及考核方法改革

深化中国大学课程教学方法和考试考核方法的改革是保障大学教学质量、提高人才培养质量的重要方面。针对目前电子测量与仪器课程在教学中的不足之处,我们进行了教学方法和考试改革的探索和实践,同时通过考试环节的完善和创新,力图达到提高学生的分析能力和综合素质的目的。本文系统的阐述了电子测量与仪器课程教学方法的改革和考核方法的改革思路,并取得了一定的效果。     

事前与事后市场细分方法的比较研究

随着市场细分研究的深入,细分方法由以定性分析为主的事前细分法逐渐发展到结合定性与定量分析的事后细分法。在实际应用中,事前与事后细分方法都可以应用,但孰优孰劣未知。主要对两种细分方法进行对比分析,探讨两种市场细分方法的细分效果并分析哪种细分方法的效果更佳。     

工程项目风险辨识与评价方法研究

工程项目建设过程存在着很大的不确定性,如何准确地识别工程项目中的各种风险是工程项目建设中的关键问题。文章在分析了项目工程风险的基础上,提出了工程项目风险辨识的一般方法。比较详细列举了风险评价涉及的所有方法,并通过实例对几种常用的方法进行了重点分析。     

Mixed methods studies in entrepreneurship research: Applications and contributions

Mixed methods research is becoming an increasingly popular approach in several fields. However, its application in the field of entrepreneurship has not been studied. The authors reviewed the use of mixed methods research in three entrepreneurship journals and two leading generalistic journals that publish entrepreneurship research, examining the main purposes and designs. A total of 955 articles were reviewed and 81 mixed methods studies were identified. The analysis of these articles revealed opportunities associated with the application of this approach. Mixed methods may help to improve entrepreneurship research addressing challenges emphasized in earlier studies. Suggestions on why and how to use mixed methods research are offered, and recommendations are provided to guide future mixed methods studies to advance our understanding of the entrepreneurial phenomenon.