模糊类比法在工程造价估算中的应用

工程造价的模糊估算方法是一种应用模糊数学的基本原理,对同一结构体系的拟建工程和已建工程结构方案的相似程序进行定量化对比和研究,从而快速地利用类似已建工程的造价资料估算拟建工程造价的方法。主要介绍该方法基本原理,并通过案例进行验证。     

The institution efficiency of stock price limits： An experimental analysis on the two stocks market with continuous bid

Price limits in product market have been discarded in classic microeconomics. However, price limits affect the trade behavior of the same agent, since agents in the stock market change their trade status frequently. Due to the controversy on the institution effectiveness of the price limits in stock market, this paper design an experimental market with two stocks with continuous bid, in which we investigate the impact of the price limits on the stock market. The results show that the price limits moderate the price volatility within and between the trades periods, thus can stabilize stock price. In addition, price limits, when measured by traditional approach, restrain the fluidity of the market, reduce the volatility of transaction shares and maintain durative of fluidity. While volatility-based fluidity measurements show that the fluidity is enhanced significantly in stock market with price limits.     

Updating Input–Output Tables with Benchmark Table Series

Numerous methods have been proposed to update input–output (I–O) tables. They rely on the assumption that the economic structure will not change significantly during the interpolation period. However, this assumption may not always hold, particularly for countries experiencing rapid development. This study attempts to combine forecasting with a matrix transformation technique (MTT) to provide a new perspective on updating I–O tables. Under the assumption that changes in the trend of an economic structure are statistically significant, the method extrapolates I–O tables by combining time series models with an MTT and proceeds with only the total value added during the target years. A simulation study and empirical analysis are conducted to compare the forecasting performance of the MTT to the Generalized RAS (GRAS) and Kuroda methods. The results show that the comprehensive performance of the MTT is better than the performance of the GRAS and Kuroda methods, as measured by the Standardized Total Percentage Error, Theil's U and Mean Absolute Percentage Error indices.     

试论人工智能应用于我国传统制造业的启示

现阶段,人工智能的应用和普及已经成为社会运行发展的一大趋势。与此同时,传统制造业面临着与人工智能相结合应用的升级和转型。论文基于人工智能发展与应用的背景,对人工智能带来的机遇和挑战展开分析,指出了人工智能应用于我国传统制造行业未来发展趋势方面的启示,并在此基础上提出人工智能在传统制造行业的应用办法,提高人工智能运行效率。     

博士毕业生就业选择研究:综述与展望

就业作为博士教育运行机制的终端,是对博士生培养质量的重要检验.已有博士毕业生就业选择研究主要围绕整体就业率、就业选择趋向、就业选择差异性等方面展开,达成了一些共识,为了解博士毕业生就业选择提供了有效途径.但相关研究在数据来源以及研究内容上普遍存在年限单一、院校单一或分析维度单一等问题,未来研究需采用多年限、多院校、多维度分析的方式对博士毕业生就业选择进行更加准确、深入、全面的呈现.     

基于CEEMDAN-EBA我国碳排放交易价格影响因素分析

本章以上海市碳排放交易所公布的碳价数据为样本,使用改进的CEEMDAN方法及小波变换将碳价序列分解并降噪,运用极值边界模型对各因素的影响程度进行分析.分析结果发现:市场内在和外在机制均对碳排放权价格产生显著影响.从市场内在机制来看,能源价格对碳价存在较大的影响,而市场外部环境中,经济发展水平、欧盟碳交易市场CER期货价格以及人民币对欧元汇率均显现出稳健性的影响.     

GPRS在配电自动化系统中的应用研究

GPRS是一种基于GSM系统的无线分组交换技术,其在通信领域中的应用,可高速的进行数据处理[1].配电自动化是指以配电网一次网架和设备为基础,综合利用计算机、信息及通信等技术,实现对配电网的监测、控制和快速故障隔离.为了保护和监测实时数据的安全性与可靠性,生物人脸识别技术基于神经网络计算可得到精确的人脸校验,完成信息安全性的权限保护.本文将生物人脸识别技术基于GPRS的通信传输应用在配电自动化系统中.     

Leader–member exchange and guanxi are not the same: differential impact of dyadic relationships on fit perceptions,helping behavior,and turnover intention

Extant literature on person–environment fit has underlined the positive impact of leader–member exchange (LMX) on person–supervisor (PS) fit. We challenge this assumption and propose that LMX, which captures the working relationship between employees and their managers, is more strongly associated with person–organization (PO) fit, not PS fit. We further propose that the personal aspect of the relationship between employees and their managers, namely supervisor–subordinate guanxi, is more strongly associated with PS fit than LMX. Finally, we theorize that LMX and supervisor–subordinate guanxi will be associated with turnover intention and helping behavior targeting the supervisor, respectively, through their differential impact on PO and PS fit. Data collected from 267 leader–member dyads in 17 companies in China using a two-wave procedure supported our hypotheses. These results have implications for theories on the multi-dimensional nature of the person–environment fit as well as research differentiating LMX and supervisor–subordinate guanxi.     

影响我国电信业发展的经济因素的实证分析

本文利用1991-2002年的时间序列数据,对影响我国电信业发展环境的经济因素———经济发展水平、市场化程度、产业结构变动、储蓄存款增长、城镇化程度、固定资产投资增长额、科技化水平等因素进行实证分析,并提出建议。     

浅析我国征地制度中"公共利益"界定与征地范围划分问题

在我国,土地征用权的法律规定主要来自《宪法》、《土地管理法》和《城市房地产管理法》。我国宪法,虽然赋予国家征用土地的权利,却没有为这种权利的行使划定明确的范围、界限、方式和程序;现行法律中关于土地征用权的规定互相矛盾,从而导致土地征用权的滥用,同时还存在对农民的补偿和安置不到位等问题。因此迫切需要完善土地征用制度,明确界定“公共利益”的范围,文章就此问题进行了初探,并提出了完善征地制度的建议。