How do countries choose their monetary policy frameworks?

This paper investigates the determinants of countries’ choices of monetary policy framework. A brief narrative focused on groupings of countries motivates an econometric analysis which draws on previous work on the determinants of exchange rate regimes, bringing in standard factors as well as the trade networks of potential anchor currency blocs and the financial market depth that are emphasised in the narrative. The model turns out to be able to predict three quarters of countries’ choices, and there is no obvious systematic pattern in the errors. The results have important implications for how countries should choose their monetary policy frameworks.     

对林业税费的经济学分析

该文运用经济学的基本工具———供给和需求曲线 ,以商品林为研究对象 ,探讨了林业税费的作用机理和内涵。该文认为商品林生产具有正的外部性 ,市场失灵使生产者将不能提供社会真正所需要的商品林数量。在封闭的市场条件下 ,林业税费会直接成为价格的一部分 ,商品林生产者应当能够获得正常利润 ,与税费高低无关 ,但会使一部分林地退出生产。林业补贴是一种负的林业税收。在开放市场经济条件下 ,国内商品林供应量低于没有林业税收时的商品林供应量 ,更低于考虑社会生态需求时的商品林供应量 ,造成巨大的社会福利损失 ,应减免林业税费、增加林业扶持、取消价格管制。该文进一步研究了与林业税费密切相关的森林采伐限额政策 ,认为对商品林应该完全取消采伐限额政策     

国内外二语词汇深度研究综述

近十几年来国内外研究者开始将词汇研究的重点从宽度或词汇量的研究转向对词汇深度或词质量的研究。和产出性词汇相比 ,接受性词汇习得具有明显的“超出”现象 ;词汇知识习得过程存在一定的发展模式 ,如学习初期词义发展较快 ,中高级阶段派生、搭配等发展较快 ;词汇深度和广度与语言综合能力尤其是阅读能力关系密切     

开放式数控切割机神经网络误差补偿研究

分析了影响数控火焰切割机加工精度的主要因素,利用开放式数控系统的软件开放性,提出了采用IGCAQBP学习算法的神经网络方法来对包括金属热变形、机械传动误差等非线性因素在内的多种因素造成的加工误差进行误差补偿,设计了嵌入开放式数控系统中的神经网络误差补偿器,给出了实用的补偿器使用方法,并对误差补偿功能进行了扩展,仿真结果和实际应用表明该方法稳定有效。     

Multivariate outlier detection in incomplete survey data: the epidemic algorithm and transformed rank correlations

Summary.  As a part of the EUREDIT project new methods to detect multivariate outliers in incomplete survey data have been developed. These methods are the first to work with sampling weights and to be able to cope with missing values. Two of these methods are presented here. The epidemic algorithm simulates the propagation of a disease through a population and uses extreme infection times to find outlying observations. Transformed rank correlations are robust estimates of the centre and the scatter of the data. They use a geometric transformation that is based on the rank correlation matrix. The estimates are used to define a Mahalanobis distance that reveals outliers. The two methods are applied to a small data set and to one of the evaluation data sets of the EUREDIT project.     

梯玛“求子”仪式中的符号化空间——以剪纸“天门”为中心

梯玛仪式“玩菩萨”中的剪纸、绘画使用了大量的形象性符号,包括剪纸天门、天梯、天钱、纸人纸伞、穿衣儿粑粑、神案等,考察其在堂中各自的位置、数量、用色及形式,从艺术形态学和美术人类学的角度出发,结合梯玛自己的解释和在仪式中的具体作用,同时与其他民族民间同类剪纸做比较,对“玩菩萨”仪式中的图像符号做深入的分析。并以“求子”一节为例,分析符号组成空间,符号在特定的空间情境中产生意义,阐明民间神圣符号在组成仪式空间情境中的作用,研究剪纸、绘画等符号在空间情境中意义的转换,体现出民间艺术、民间思维中象征性的特点。     

叛逆女性的性格悲剧--《雷雨》中繁漪形象的深度阐解

《雷雨》中的繁漪是具有鲜明特色和复杂蕴涵的叛逆女性形象，其鲜明特色在于独特性的雷雨性格，其复杂蕴涵在于人性建构中的理性因素与非理性因素和个体生命力中的创造性力量与破坏性力量的相兼相制，因而深切地显现出人性的深度。     

服装制板、打板在实践应用中的探索

从服装企业生产的角度,阐述了服装制板、打板在生产实践中的具体应用。并结合实践经验,分析总结了针对不同情况与要求如何快速、准确、合理地制板、打板,以便为服装生产企业提供优质、方便、快捷的技术服务,促进服装企业的快速发展。     

电商平台“砍单”行为的法律规制

在电商平台购物中发生危害消费者的公平交易权、自主选择权的经营者“砍单”行为日益增多,当事双方冲突不断。造成“砍单”行为与日俱增的根本原因是要约邀请、要约、承诺判断标准的不统一以及经营者滥用格式条款。因此,有必要对“砍单”行为进行法律规制。首先,应当注重事前规范,即统一要约邀请、要约、承诺的判断标准。其次,要规范电商经营者使用格式条款,即认定违反法律强制性规定的格式条款无效及有争议的格式条款不能单独由电商平台制定。最后,在“砍单”行为发生后,既要规范经营者对消费者的合同责任承担也要规范电商平台与经营者的责任承担,从而维护消费者的合法权益。     

Resampling-based Classification Using Depth for Functional Curves

The depths, which have been used to detect outliers or to extract a representative subset, can be applied to classification. We propose a resampling-based classification method based on the fact that resampling techniques yield a consistent estimator of the distribution of a statistic. The performance of this method was evaluated with eight contaminated models in terms of Correct Classification Rates (CCRs), and the results were compared with other known methods. The proposed method consistently showed higher average CCRs and 4% higher CCR at the maximum compared to other methods. In addition, this method was applied to Berkeley data. The average CCRs were between 0.79 and 0.85.