低房价房地产开发项目桩基方案优化价值分析

软土地区低房价商品房的开发可行性,很大程度上取决于桩基设计方案。文中以一个小高层商品房的桩基方案优选为对象,基于价值分析法,在桩基工程功能和成本分析的基础上,提出桩基设计方案的价值评价指标,并用于该项目评价,结果与传统对比分析法一致。表明:1)价值分析法适用于桩基方案优选,而且与传统的对比分析法相比,用定量的数据说话,更准确、科学;2)所提出的价值评价指标对该项目是正确适用的。此外,还对该工程其它的桩基设计方案以及价值评价指标的通用公式进行了简要探讨,供进一步研究和同类工程参考。     

结构异质性对中国能源高质量发展的影响研究

基于结构异质性对能源高质量发展影响的理论分析,使用稀疏主成分分析方法测度中国能源高质量发展水平,构建中国和八大经济区域面板分位数回归模型,实证研究了结构异质性对中国能源高质量发展的影响。结果表明：2003—2020年中国能源高质量发展水平有所提升,但仍存在明显的区域发展不平衡问题,西部地区和北部沿海地区的能源高质量发展水平更高。产业结构与能源高质量发展水平呈负相关关系,能源消费结构、资本配置结构与能源高质量发展水平呈正相关关系。     

知识表达、知识互补性、知识产权均衡

基于知识的“代数格”表达方式和知识的互补性原理 ,这篇文章讨论知识产权的博弈均衡问题。每个人都拥有“局部知识” ,显然 ,如果法律对每个人的局部知识设立产权并由政府全面加以保护的话 ,人类知识将无法获得任何发展。另一方面 ,如果法律不承认任何知识的产权且政府对任何知识产权都不加以保护的话 ,人类知识也难以获得发展的激励。这里将证明 ,N个具有局部知识的社会成员在社会整体知识构成的代数格上关于各自的“局部知识”的价格的博弈存在至少一个纳什均衡———此即该社会内部自恰的和最优的知识产权配置。由周林 ( 1 994) ,这类均衡点构成一完备格。又由MilgromandShannon( 1 994) ,博弈的每一参与者最佳对应集内的最大策略和最小策略在社会知识的代数格上 (按集合强序 )单调非减 ,这意味着当社会成员的初始知识水平有所提高时 ,由产权博弈均衡所决定的各个局部知识的知识产权价格将相应有所上升。所有上述结果都不需要通常的凸性假设 ,因此在以“知识”为核心要素的经济分析中 (包括收益递增经济学 )具有独特重要的意义     

地方人大中的地域代表现象探析——基于五省市人大代表建议的内容分析

本文试图探析在中国地方人大中是否存在地域性代表及其相关因素。通过收集和分析2017年国内五省市人大收到的近四千条代表建议,发现在地方人大代表的履职行为中,一定范围内存在从整体资源中为选区争取利益的现象。进一步回归分析的结果显示:来自经济发展水平相对较低的地区的代表,更倾向于提出地域性建议;由代表联名提出的建议更可能是地域性建议;担任地方党政领导职务的省市人大代表,在提出建议时更倾向于提出地域性建议。上述实证发现对中国地方人大地域性代表的实现机制提供了初步启发性证据,也有助于丰富我们对非竞选体制下的政治代表性和回应性机制的理解。     

Product Touch and Consumers’ Online and Offline Buying: The Role of Mental Representation

As offline retailers struggle to compete with online ones, the importance of a consumer’s ability to touch a product prior to purchase becomes important to study. Prior research has found inconsistent results on whether product touch facilitates consumers’ product-related decision making. Some studies report a positive effect, whereas others do not. The current research reconciles this inconsistency and draws retailing implications. Across three experiments, we show that the effect of product touch on consumers’ purchase intentions and willingness to pay for a product being evaluated is evident when consumers’ mental representation of the product is concrete, but not when abstract. We further show that perceived risk and perceived ownership simultaneously mediate this moderating effect of mental representation. Implications are drawn for both offline and online retailers.     

Gender and climate change: Do female parliamentarians make difference?

This paper investigates whether female political representation in national parliaments influences climate change policy outcomes. Based on data from a large sample of countries, we demonstrate that female representation leads countries to adopt more stringent climate change policies. We exploit a combination of full and partial identification approaches to suggest that this relationship is likely to be causal. Moreover, we show that through its effect on the stringency of climate change policies, the representation of females in parliament results in lower carbon dioxide emissions. Female political representation may be an underutilized tool for addressing climate change.     

Making sense of complex data using interactive data visualization

An important role for accountants today is to provide decision support to senior management by assisting them in the analysis of large, complex data sets. Interactive data visualization (IDV) facilitates this process by allowing users to navigate, select, and display data via an easy-to-use interface often used as a component of data analytics. Given the increasing popularity of IDV as a tool for making sense of complex data, it is important that accountants become familiar with and learn how to use this technology. This case provides a hands-on opportunity to organize complex accounting data to create IDVs for decision makers to use. Further, the case enables students to understand the potential impact of IDVs on preparers and users of accounting information. Students will assume the role of a division controller in a hypothetical company and create an IDV to assist the chief executive officer (CEO) in decision making.     

The concept of near money in loyalty programmes

Loyalty reward schemes often have their own currency, for example, frequent flyer miles, which is a form of near money or quasi money. In a variation of earlier work by Snelders et al. (1992), when examining both New Zealand (Study 1) and Hong Kong (Study 2) residents, respondents provided typicality ratings, similarity ratings, and answers and reaction times to the question “Is X a type of money?” for examples of money, near money and objects of value. The results from both studies showed that near money is conceptualised in a way that is like but distinct from legal tender. Two further studies investigated implications of this conceptualisation. Study 3 found that preferences for spending near money were influenced by the ostensible purpose of the currency, and Study 4 showed that near money seemed to be placed outside of regular legal tender mental accounts.     

基于图形小波变换的遥感图像表示与去噪

离散小波变换（Discrete Wavelet Transform,DWT）通常用于图像的表示。然而,对于具有不规则形状边缘的图像,尤其是对于纹理和细节信息较多的遥感图像,DWT却很难有效表示,进而影响后续去噪效果。针对该问题,提出了一种基于图形小波变换（Graphic Wavelet Transform,GWT）的图像去噪方法。首先,将图像表示为图形信号,并通过该图形信号的谱表示构造相应的变换矩阵;然后,设计了一种改进自适应阈值的图像去噪方法,在GWT变换域内对图像去噪。实验结果表明,与常用的图像去噪方法相比,所提算法能够提供更好的图像主观质量。采用均方根误差（Root Mean Square Error,RMSE）和峰值信噪比（Peak Signal-to-Noise Ratio,PSNR）作为客观指标,结果表明,采用所提方法得到的重建图像客观质量更优。     

Gender equality's impact on female directors’ efficacy: A multi-country study

This paper studies the role of gender equality in female directors’ efficacy and its subsequent effects on firms. Female directors in more gender equal societies should possess greater skills and exert more influence due to better access to educational/professional opportunities and more amicable boardroom dynamics. Therefore, we hypothesize that gender equality serves as an important moderator in the relation between female board representation and firm outcomes. Using a multi-national panel comprising 1986 public firms from 24 countries or areas spanning from 2007 to 2016, we obtain results that firms with higher female board representation exhibit higher overall performance, less earnings management, and less excessive risk taking, in which all three relations are stronger in countries with greater gender equality. Taken together, our paper implies that the impact of female directors on firm outcomes depends on a country's overall level of gender equality.