城市中心区与郊县卫星城协调发展研究——以“三年大变样”背景下的石家庄市为例

河北省提出从2008年到2010年"每年一大步、三年大变样"的目标后,石家庄市按照"三年大变样"要求提出"1+4"格局开展中心城和卫星城建设思路.文章从分析国内外卫星城的发展现状入手,结合石家庄的特点及现实状况,探讨了石家庄在中心城与卫星城建设方面存在的问题和对策.     

The dynamics of tourism’s carbon footprint in Beijing,China

Abstract

Beijing is an important hub for global tourism, but the extent of tourism’s contribution to Beijing’s carbon footprint remains unclear. We integrated an environmentally extended multiregional input–output model and the tourism satellite account in a study to estimate the dynamics of Beijing’s tourism-related carbon footprint in the post-financial crisis period. Our findings indicate that from 2007 to 2012, whereas the carbon footprint of inbound tourists in Beijing steadily decreased, that of domestic tourists increased. The composition of carbon footprints for the consumption activities of inbound and domestic tourists differed substantially. We also traced the spatial distribution of carbon sources associated with tourism consumption in Beijing. In light of our findings, we offer recommendations to target the adoption of low-carbon consumption patterns by domestic tourists, and energy optimization of service suppliers by increasing energy use efficiency and the renewable energy ratio. In addition, we recommend that public and government should seek to lower energy costs and reduce carbon emissions throughout the life cycle of commodities. We conclude that the government and tourism authorities should actively promote carbon and wider environmental awareness, and that producers must seek to improve the efficiency of their energy use by reducing carbon emissions at source.     

基于股东财富最大化的应收账款模型

从股东财富最大化的财务管理目标出发，根据企业应收账款与其他要素的关系，建立最优应收账款模型。以此为基础，最优应收账款模型可与其他财务管理的应用模型结合起来，更好地为企业管理服务。     

Econometrics and inconsistencies in the national accounts

Economic data are typically inconsistent with national accounting identities, contain measurement errors and are sometimes unavailable. A generalized conditioned least square procedure for the adjustment of data is proposed to deal with these problems. It is shown how the resulting data may be used for FIML estimation of the parameters of dynamic models (and the data themselves) with the aid of the Kalman-Bucy filter. An illustrative application of the proposed techniques to UK data is reported.     

完善养老保险省级统筹管理体制的思考

我国养老保险金的发放,其短缺部分主要由中央财政给予财政补贴,且补贴数额越来越大,基本实现省级养老保险统筹目标,有利于降低管理成本与缴费成本,克服低层次统筹的弊端,减少对中央财政养老保险基金的补贴压力,最终实现由省级统筹向中央统筹的养老保险可持续发展的战略目标。     

Accounting records of large rural estates and the dynamics of agriculture in Catalonia (Spain), 1850-1950

In this article the agrarian accounts generated by the large rural estates of Catalonia (Spain) during the period between 1850 and 1950 are studied with a twofold objective. First of all, their formal characteristics and content are described and it is argued that the traits and variations observed are a consequence and reflection of the social conditions under which they were generated. Second, we evaluate the use which Catalan rural historiography has made recently of these documents in order to reconstruct the functioning and evolution of contemporary agriculture.     

日本天基情报侦察系统发展分析

本文就日本利用本国多用途民用遥感卫星和借助别国力量获取卫星图像信息为其军事服务，直至建立日本独立的军事侦察卫星系统这一发展天基情报侦察系统的策略进行了评述。同时，对日本天基情报侦察系统装备情况及其可能达到的水平也作了简略的阐述。     

台湾地区空间系统发展综述

总结了台湾地区空间发展计划的进程，重点介绍了其“华卫”系列卫星、“番薯”卫星、探空火箭和卫星地面应用系统的发展情况，并简要分析了台湾地区发展空间系统的主要特点。     

高速维特比译码器的设计

本文实现了高速(2，1，7)卷积码的维特比译码器。该译码器针对加比选(ACS)模块采用并行化结构设计，并且在解码器的各个部分，在不影响译码性能的前提下，采用了一系列的简化设计，从而使译码器输出数据的速率达到160Mbps。     

Macroeconomic effects of government spending shocks: New narrative evidence from Canada

This paper examines the macroeconomic effects of government spending shocks in Canada for the period of 1949–2012. We construct a novel measure of news about exogenous government spending changes identified through the narrative approach. We use government documents, mostly the budget speech, to identify the size, timing, and principal motivation for all planned major federal government spending changes. To achieve identification, we consider those changes that are unrelated to the contemporaneous movements in the economy. The implied government spending multiplier estimates using our exogenous government spending news series are between 1.08 and 1.69.