Has market concentration fostered on-time performance? A case study of seventy-two U.S. airports

The study compares a multivariate with a quantile regression model to determine whether utilized airport capacity, departure and airborne delays, departure and arrival demand, and market structure explained variations in on-time gate arrivals and arrival delays. In both models, airport departure delays, arrival and departure demand explained variations in the two response variables in prioritized and non-prioritized metroplexes, holding other variables constant. After 2008, the consolidation of the airline industry through mergers coincided with the implementation of NextGen programs, which may have contributed to improvements in on-time performance, especially at prioritized metroplexes where airspace was redesigned.     

An Epistemological Reflection on Social and Solidarity Economy

Social and Solidarity Economy (SSE) is emerging as life affirming solutions to the global crises through the multiple ways people locally reinvent economic life on the margins of the capitalist system based on values of solidarity, reciprocity and sustainability. Although the SSE builds on a strong foundation of real practices and institutions of economic transformation as the way forward for us, this paper argues that this world of practice is in need of its theory to frame discourses and engage with the bigger picture with confidence as an alternative to the dominant economic paradigm. The author argues that the orthodox economics, with its ontological construct of the homo economicus, Cartesian dichotomy and logical positivist epistemology severely constrains our abilities to understand and appreciate economic alternatives based on ‘other’ rationalities. Hence, there is a need for an epistemological revolution to construct a coherent theoretical framework from the wreckages of the neoclassical economics for the SSE. This paper seeks to outline the basic structure and the key elements of the ontological and the epistemological framework for this ‘science-in-the-making’ as a step to stimulate further debate for a paradigm revolution.     

在古典诗词鉴赏中培养职高生的多元智能

针对职高生的特点和现状,就结合多元智能理论进行古典诗词鉴赏实践谈了一些自己的体会。     

A number‐of‐modes reference rule for density estimation under multimodality

We consider kernel density estimation for univariate distributions. The question of interest is as follows: given that the data analyst has some background knowledge on the modality of the data (for instance, ‘data of this type are usually bimodal’), what is the adequate bandwidth to choose? We answer this question by extending Silverman's idea of ‘normal‐reference’ to that of ‘reference to a Gaussian mixture’. The concept is illustrated in the light of real data examples.     

我国财政专项转移支付决策过程分析--以多源流分析为视角

财政转移支付是1994年实行分税制以来平衡中央-地方以及区域间财力不均的制度，我国专项转移支付又始终占据着财政转移支付的重大比重。专项转移支付在确定资金转移地区，资金转移项目以及每个专项拨款多少的标准是如何确定的？这些都取决于专项转移支付的决策过程。文章通过多源流分析视角来探析我国财政专项转移支付的决策过程中存在的问题，了解我国财政专项转移支付的决策过程。     

商业银行管理层激励机制研究——基于董事会多重目标的视角

由于管理层激励与银行价值相关性较弱,其有效性问题一直困扰着公司治理学者。研究商业银行管理层激励机制设计得出,银行有效管理层激励机制应该是：将董事会所有的目标都作为管理层激励合约的考核指标,并且各个目标产出对管理层收入的影响系数保持相同。除了反映公司价值目标的股票、期权等激励以外,银行管理层的收入还必须包括相当比例的反映资产风险等目标的激励部分。由于商业银行的特殊性,其最优管理层激励约束机制的目标影响系数设定应该较普通企业更低。因此,委托代理问题更严重,董事会直接监督的责任更大。     

信贷、保险、“信贷+保险”的扶贫效果比较研究

农村金融是农村经济发展的重要内生动力,创新金融扶贫体制对我国农村深度贫困地区的脱贫攻坚工作具有重要意义。本文基于多重均衡模型,对比研究信贷、保险、"信贷+保险"三类金融产品的扶贫效果,在不同的信贷和保险产品结构下得出陷贫概率,进而得出金融扶贫产品的精准设计,以创新金融扶贫体制,从而解决我国深度贫困的问题。研究表明:单独信贷产品扶贫无效;保险能够帮助阈值以上人群摆脱潜在贫困,但对深度贫困无效;"信贷+保险"能解决一定程度的深度贫困问题,比单独信贷或单独保险的扶贫效果更好。     

基于消费者价值观的市场细分实证研究

我国消费者的价值观念和消费行为越来越复杂,影响消费者决策的决定因素是其深层的生活形态、价值观等,根据生活方式和价值观将消费者进行细分,无疑具有重要意义。文章主要以前期调查数据为基础,通过因子分析、聚类分析、广义对应分析等统计分析方法,将消费者分为自信进取型、时尚享乐型和传统保守型三个细分市场,并对每一个细分市场从消费者所在城市及其文化程度两个方面作了分析。     

我国旅游业与民航客运业相关性研究及启示

民航客运业和旅游业之间的发展有很强的关联性,旅游业三大市场(国内旅游市场、出境旅游市场、入境旅游市场)都与民航客运业呈显著的正相关关系.因此,一方面要加强民航客运业与旅游业之间的合作,抓好国内旅游市场的客源,继续保持民航客运在出境游旅客中的绝对优势,开辟旅游特色航线,开发配合旅游业的民航特色服务,使民航客运业与旅游业在发展中携手共进;另一方面,民航客运业的发展要跟上旅游业发展的脚步,在运力、航线网络覆盖面等方面满足旅游业发展的需求,将旅游业对民航客运业发展的辅助作用发挥到极致.