旅游产业与县域经济耦合协调发展研究 ——来自桂林阳朔县的经验证据

旅游业可以带动县域经济的发展,但也要依靠一定程度的经济作为基础支撑,如何协调好两者的均衡发展,关系到旅游产业与县域经济的耦合协调问题。以阳朔县为研究对象,采用协整分析、误差修正模型以及耦合协调度分析的方法对2004年至2018年阳朔县旅游产业和经济的关系和耦合协调性进行研究。结果表明：旅游产业和经济之间存在长期均衡的关系,经济的短期波动受旅游产业的短期波动以及误差修正项的影响；旅游产业和经济在观测期间由轻度失调逐渐转变为良好协调的状态。     

Early labor market outcomes of university graduates: Does time to degree matter?

Using university administrative and survey data drawn from the AlmaLaurea Consortium, we analyze the effect of time to degree on the early labor market performance of Italian graduates. The empirical strategy allows identifying separately the impact of elapsed time to degree on the transition from university to work and on earnings from other determinants specific to the academic path completed. Findings suggest that delayed graduation reduces the employment probability (0.8% points for each year of delay), and this effect is still persistent five years after graduation. Once employed, graduates not completing their degree within the minimum period are also penalized in their net monthly earnings, even five years after graduation. The most penalized groups are women and graduates in non-scientific fields.     

Workforce diversity and firm performance: Relational coordination as a mediator and structural empowerment and multisource feedback as moderators

Workforce composition in organizations has become increasingly diverse. As an important step in determining how workforce diversity leads to firm performance, we proposed relational coordination as a mediator through which diversity in age and education indirectly affects firm performance. We also highlighted two human resource management practices (structural empowerment and multisource feedback) as critical contingencies that moderate the effects of workforce diversity on relational coordination and firm performance. We conducted hierarchical multiple regression on multisource data (including responses from senior directors, department directors, managers, and employees, as well as financial performance) from 189 Korean firms in the manufacturing sector, which yielded support for our hypotheses. These findings offer novel theoretical and practical insights into the effective management of workforce diversity.     

贵州有色金属产业集聚度与竞争力的实证研究

促进有色金属产业集聚是提升贵州省有色金属产业竞争力的主要途径之一，因而准确测度和把握有色金属产业集聚与贵州有色金属产业竞争力的关系是非常必要的。文章把贵州省放在西部九省中进行对比分析，选取区位熵反映有色金属产业集聚度，选择企业数量区位熵反映矿产资源产业区域集聚度，选取产业产值区位熵反映有色金属产业经济集聚度，而有色金属产业竞争力则选取产值利润率借以反映。具体实证数据均来源于西部9个省份的2013统计年鉴与2013年的中国有色金属工业年鉴。通过实证研究认为贵州省有色金属产业存在诸如区域集聚、经济集聚不足，产值利润率低下，产业集聚效应难以充分发挥等问题。最后提出提升贵州省有色金属产业竞争力的相关政策建议。     

Measurements and determinants of multifaceted poverty in South Africa

Poverty, despite being a multifaceted concept, is commonly measured in either absolute or relative monetary terms. However, it can also be measured subjectively, as people form perceptions on their relative income, welfare and life satisfaction. This is the first study that uses the National Income Dynamics Study data to analyse poverty across various objective and subjective methods. The paper finds that while respondents' poverty status varies across methods, blacks remain the racial group most likely to be defined as poor by at least one method. The multivariate analysis reveals that the impact of some explanatory variables, such as experience of negative events, frequency of crime victimisation, health status and importance of religious activities, is mixed across methods.     

长江经济带土地出让与城镇化质量耦合协调研究

土地出让与城镇化质量作为城镇化的主要依托和核心追求,二者的关系影响到城市的可持续发展。以长江经济带为例,构建土地出让与城镇化质量综合评价指标体系,利用熵值法和耦合协调模型对二者耦合协调的时空差异做出实证研究,并利用ArcGIS将其空间显化。结果表明：研究期内长江经济带土地出让与城镇化质量的协调度呈现先增后减再增趋势；二者的协调度自西向东逐步增加,耦合度无明显分布规律,总体呈高水平耦合状态；土地出让与城镇化质量的协调度在城市群间的差异显著,但城市群内部的差异逐步减小。从土地出让与城镇化质量的耦合协调发展的视角,为实现城市健康可持续的发展提出政策建议。     

铁路集装箱运输与社会经济协同发展关系分析

针对我国铁路集装箱运输和社会经济发展的关系,选取了能够表征两者发展的时间序列变量,运用协同学理论,构建了铁路集装箱运输和社会经济发展关系的协同度量化模型,对近18年来两者的综合发展水平、协调度及协同度变化进行了分析。结果表明该模型能客观全面地评价铁路集装箱运输和社会经济耦合因素协同发展水平和状态,表明铁路集装箱运输发展和社会经济增长两者密切相关,二者在互动中循环发展。     

Who benefits from partial tax coordination?

In this paper, we investigate whether partial tax coordination is beneficial to countries within and outside a tax union, in which countries are supposed to compete in taxes and infrastructure. Our results demonstrate that a subgroup of countries agreeing on a common tax rate can harm both member and nonmember states. This is in contrast to the classical findings that partial tax harmonisation is Pareto improving. When a minimum tax rate is imposed within a tax union, we demonstrate that it does not necessarily improve the welfare of the member countries. Moreover, both the high‐tax and low‐tax countries can be worse off. This conclusion is at odds with the classical result that a high‐tax country benefits from the imposition of a lower tax bound.     

一种机载三维音频技术的快速计算方法

针对机载三维音频应用的实时性需求，提出了一种基于单耳相对头相关传递函数和改进型混响模型的机载三维音频快速实现方法，在较传统实现方式性能无明显下降的情况下降低了80%的计算量。对提出的算法在F-16战斗机模拟强噪声环境下进行相关主观试听实验，同时在某型飞机音频系统中实验验证。实验结果表明,所提方法在实时处理3路三维音频时，三维音频方位分辨精度在5°以内，可满足实际机载平台使用需求。