解读马克思与熊彼特的"二分法悖论"

理论界流行着关于马克思与熊彼特的"二分法悖论",马克思认为"资本主义制度最终不能继续生存是因为其经济失败",而熊彼特则认为"资本主义制度最终被摧毁是因为其创新而取得的经济成功".本文旨在通过比较马克思与熊彼特的经济发展的思想后,探讨了这两位经济学家得出截然不同的结论的原因.     

食品中总灰分测定方法的简化

目的:探讨同一方法用于不同种类食品中总灰分测定的可行性.方法:按照国家标准规定的两种灰分测定方法,选取不同种类食品分别进行测定.结果:标准规定的6类食品14种样品的灰分,均可以采用经酸处理过的坩埚,并加入助灰化剂测定,符合标准要求.结论:统一实验方法后,实验重现性较好,提高了日常检验效率.     

郑州市区公交车服务满意度调查与分析

<正>一、调查背景公共交通是城市发展中不可缺少的动力来源,对城市的经济发展和人们的日常生活有重要的影响。城市交通工具可以分为公共交通工具和私人交通工具,公共交通是一种社会群体型交通,它具有人均占有道路面积少、载客量大的优点,私人交通工具则反之。公交车是城市居     

试论我国碳排放权期货市场的构建

随着全球温室效应和气候变暖问题的日益严重,二氧化碳的减排越来越受到了人们的重视,以二氧化碳排放权为标的的国际碳排放权交易市场应运而生。期货市场具有价格发现、套期保值等功能,对于发展迅猛的碳排放权交易市场来说,建立碳排放权期货市场有重要的意义。本文首先简要介绍碳排放权交易市场,接着阐述我国建立碳排放权期货市场的必要性,然后分析我国建立碳排放权期货市场的可行性,最后提出我国开展碳排放权期货交易的设想。     

Neural network forecasting of quarterly accounting earnings

This study uses an artificial neural network model to forecast quarterly accounting earnings for a sample of 296 corporations trading on the New York stock exchange. The resulting forecast errors are shown to be significantly larger (smaller) than those generated by the parsimonious Brown-Rozeff and Griffin-Watts (Foster) linear time series models, bringing into question the potential usefulness of neural network models in forecasting quarterly accounting earnings. This study confirms the conjecture by Chatfield and Hill et al. that neural network models are context sensitive. In particular, this study shows that neural network models are not necessarily superior to linear time series models even when the data are financial, seasonal and non-linear.     

Dealing with Fuzziness in Cost-Volume-Profit Analysis

A major limitation of the traditional cost-volume-profit (CVP) analysis is its inability to account for uncertainty and risk. This deficiency has been resolved by the development of probabilistic and stochastic CVP models which require precise numerical assessment of uncertainties in sales demand. There remains, however, imprecision in the expert's assessment of the sales demand distribution. Sub-optimal decisions may result because such fuzziness is being ignored in the analysis. In this paper, the application of Fuzzy Set Theory to handle imprecision is presented, and it is suggested that the methodology is appropriate for accounting applications, especially those involving human judgement.     

边创作边思考&边使用边创作——浅议山本理显及其自主建筑观

受到原广司影响的山本理显,对于建筑的空间结构格外着迷,他主持的若干集合住宅表现出对群落形态的独特理解。因其非东大&早稻田体系的背景以及对战后以来建筑学普世文明的与众不同的思考,逐渐发展起自主建筑观的思想,从玉立大学到北京建外SOHO。     

Nonparametric estimation and testing of stochastic discount factor

This paper attempts to estimate stochastic discount factor (SDF) proxies nonparametrically using the conditional Hansen–Jagannathan distance. Nonparametric estimation can not only avoid misspecification when dealing with nonlinearity in the model but also provide more precise information about the local properties of the estimators. Empirical studies show that our method performs better than the alternative parametric polynomial models, and furthermore, we find that the return on aggregate wealth can sufficiently explain the SDF proxies when one deals with nonlinearity appropriately.     

职业教育市场化需求背景下的体育教学改革思考

伴随着我国职业技术教育迈入市场化发展需求的教育体制改革中,各个高等职业技术教育学校都在努力的提高培养学生的技能和综合素质,而体育教学是所有课程改革中最基础的课程,所以笔者就关于职业技术教育中体育教学改革的相关问题谈谈自己的认识。     

Developing Experience-Based Premium Rate Discounts in Crop Insurance

This article addresses the feasibility of implementing an experience-based premium rate discount system in crop insurance. While adverse selection and moral hazard in crop insurance have been extensively studied in the past, discount systems or bonus–malus incentives have not, to our knowledge, been investigated. Our empirical analysis indicates that a crop insurance discount system could be implemented based on a measure of favorable past insurance experience. The estimated average discounts based on the rating methods developed in this study ranged from 5% to 9% (depending on the crop being considered).