Asymptotics for Autocovariances and Integrated Periodograms for Linear Processes Observed at Lower Frequencies

One of the most frequently used class of processes in time series analysis is the one of linear processes. For many statistical quantities, among them sample autocovariances and sample autocorrelations, central limit theorems are available in the literature. We investigate classical linear processes under a nonstandard observation pattern; namely, we assume that we are only able to observe the linear process at a lower frequency. It is shown that such observation pattern destroys the linear structure of the observations and leads to substantially different asymptotic results for standard statistical quantities. Central limit theorems are given for sample autocovariances and sample autocorrelations as well as more general integrated periodograms and ratio statistics. Moreover, for specific autoregressive processes, the possibilities to estimate the parameters of the underlying autoregression from lower frequency observations are addressed. Finally, we suggest for autoregressions of order 2 a valid bootstrap procedure. A small simulation study demonstrates the performance of the bootstrap proposal for finite sample size.     

产业融合产生过程的模型研究

根据自组织理论,产业融合产生的过程以融合型产品出现为标志,分为从无到有、从出现到实现两个阶段。文章结合单个产业发展模型,构建了产业融合产生过程的数学模型,并在此基础上运用数值模拟统计软件对产业融合产生过程的模型进行了验证。文章认为,产业融合模型的合理性及融合型产品的替代效应在产业融合的实现过程中起着关键作用。     

ASEAN's New Frontiers: Integrating the Newest Members into the ASEAN Economic Community

Since Vietnam, Lao People's Democratic Republic (PDR), Myanmar, and Cambodia joined the Association of Southeast Asian Nations (ASEAN) in the 1990s, concerns have been raised over a Development Divide. The real division is between ASEAN members participating in the integrated East Asian economy and those that do not. The older ASEAN members have become more efficient traders, and Cambodia, Laos, Myanmar, and Vietnam must reform faster if they are to catch up. Cambodia, Lao PDR, and Myanmar are not meeting the challenge, but Vietnam may be leaving the laggards, and the Philippines is lagging the leaders. The challenge is how to avoid a two‐tier ASEAN with fast‐growing modern economies coexisting besides inward‐looking poor countries.     

Geographical location and urbanisation of the Swedish manufacturing industry, 1900–1960: evidence from a new database

Abstract

This article introduces a new database, based on official statistics, of regional manufacturing industries in Sweden. We employ this database to examine the distribution of manufacturing activity across Swedish regions and cities, 1900–1960. Over this period we observe an increasing concentration of manufacturing activities, reaching a peak around 1940, across the northern, southern and western parts (NUTS-I areas) of Sweden. Over the same period, the North-South divide in terms of manufacturing employment grew larger. Across counties (NUTS-III) and cities we, however, observe two shorter periods of convergence of manufacturing activities, in the early twentieth century and in the post-war period, whereas the inter-war period was characterised by divergence. These developments occurred to the backdrop of the urbanisation of industry in Sweden, as the rural share of manufacturing employment declined from roughly 60 to 25% between 1900 and 1960. We also find that the regional patterns of individual industries over time followed different trajectories, suggesting that that the determinants of industry location differed significantly across industries.     

空间计量视角下经济增长收敛检验:回顾与展望

目前,基于空间计量模型方法检验经济增长收敛的众多研究成果尚缺乏系统的总结梳理。透过空间计量理论模型的发展脉络,归纳了空间效应识别检验方法、空间计量模型的两大代际划分——截面数据模型和面板数据模型、空间计量模型的估计方法。按国家、省区、市县三个地理层级对运用空间计量模型检验经济增长收敛的实证研究成果进行总结评述,分析了空间截面数据模型的局限性和空间面板数据模型的相对优势,并针对空间面板数据模型在实证中遇到的问题,提出进一步研究发展的方向,即在大数据背景下,利用空间面板数据模型进行经济增长收敛机制的检验。     

On uniform convergence of undiscounted optimal programs in the Mitra–Wan forestry model: The strictly concave case

In this paper, we show that the 1986 Mitra–Wan result establishing asymptotic convergence of maximal programs to the unique golden-rule forest in the case of undiscounted, strictly concave felicity functions can be strengthened, in the same setting, to the  uniform  asymptotic convergence of  optimal  programs to the unique golden-rule forest. We work with a notationally reformulated version of the model that may have independent interest.     

违约损害赔偿制度的比较法研究

英关普通法和大陆民法法系在违约救济措施上存在较大的差异。英美法院选择判决损害赔偿，充分发挥金钱的弥补作用；而大陆法系国家更多地是判令违约方实际履行。在司法实践中对违约损害赔偿的归类上，英美法系和大陆法系采纳的标准不同，但基本上可以划分为实际损害和期待利益的丧失两类。在对违约损害赔偿的目的、违约损害赔偿适用的限制上，两大法系在立法及司法上表现出极大的趋同倾向。     

正项级数收敛性的判别法的进一步研究

用初等方法深入研究了正向级数判别法,基于比值判别法和根值判别法判别法思想,研究了更高精度判别法,给出不断提高精度的判别法的构造思想以及一般性定理。     

广东省各行业的收敛性及其对经济增长的贡献

文章从部门这个新角度分析了广东省经济增长和差异问题。分析表明，工业和其他三产对劳动生产率增长的贡献高达64％。运用新古典收敛模型检验各部门之间是收敛还是发散，结果表明，部门之间存在很大的异质性。交通运输业是显著发散的，其他三产也显示出了微弱的发散，农业、批零贸易餐饮业则是显著收敛的，建筑业收敛但不显著。对劳动生产率差距的分解表明，广东省劳动生产率的增长，95％左右来源于增长效应，其余5％来源于份额效应。