流动性过剩的调控思路研究

目前,中央银行不断采取上调存款准备金率和基准利率及发行巨额央行票据等货币政策手段控制流动性过剩,但效果并不显著。应转变思路,引导资金合理分流,努力扩大内需。     

Gender differences in Russia's job mobility and its rewards*

This article considers age and gender differences in the probability and consequences of job mobility in Russia. Little is known about who is mobile and whether mobility impacts wages once the characteristics of movers are controlled for. Results show a gender difference in the likelihood of exit but not promotion. Results also show that promotions have a positive effect only on the wages of young women, but young men's wages are not affected. Further, young men see a significant decrease in wages following an exit, while young women are not affected by firm exit. The article shows that early mobility is particularly important for women, who earn less overall. Results help to understand processes of inequality in wages and conditions that occur due to sorting, and the importance of promotions as ‘life chances’ which lead to ‘career-track jobs’. Gender differences in securing such life chances may help to understand gaps in earnings, which emerge later.     

中国省际资本流动规模实证研究

基于市场交易中资金与货物流向相反的逻辑,以地区货物和服务净流出减去其净出口的相反数来测算中国省际资本流动的规模,并分析其制度成因。结果表明:1980—2008年东部为资本净流入地区,中部为资本净流出地区,而西部则为持续的资本净流出地区;在东部地区内,京津冀为资本净流入地区,长三角和珠三角为资本净流出地区。资本跨地区流动的制度成因在于地方政府行为生成的内生交易费用差异,因而地区产业投资环境建设的重点在于持续降低当地的内生交易费用。在推进区域产业转移和产业升级过程中,可置信的保护产权的承诺等良好的公共治理对于改善地区投资环境必不可少。     

中国城市的职业流动:水平与差异

社会学家传统上使用流动表考察职业流动状况。运用人口学方法提出一种新的职业流动水平的测量指标,即总和流动率。利用2003年全国综合社会调查数据,通过总和流动率的计算,近40年来我国城市的职业流动率出现了大幅度增长。按照2002年的职业流动率水平,我国城市地区人们一生将从事三份工作或职业。同时,职业流动率的社会经济差异非常明显,较高的职业流动率发生在男性、未婚、少数民族、初中受教育程度、党员和流动人口群体中。对职业流动率测量作了新探索,提出的总和流动率概念简洁、计算方便,并具有标准化指标性质,故有一定的学术和应用价值。     

An empirical investigation into the gravitation and convergence of industry return rates in OECD countries

Tests are offered for the hypotheses that sectoral average profit rates and incremental return rates are gravitating around or converging towards a common value. We study data for various OECD countries relying on an econometric method able to account for residual autocorrelation and cross‐sector correlation. Our null hypotheses receive only a mixed empirical support. This is interpreted as the result of various kinds of limitations to capital mobility. Policy implications are discussed.     

收入流动性、代际传递与农村反贫困———异质性视角下新疆30个贫困县的实证分析简

文章从收入流动性、贫困代际传递与反贫困关系的理论研究入手,利用2000—2012年数据,选取新疆30个贫困县为研究主体,运用面板模型和面板误差修正模型分析了三者之间的长期和短期动态关系。研究发现：（1）从长期看,收入流动性、贫困代际传递对反贫困有显著作用,且收入流动性对反贫困的促进作用依赖于该县的贫困水平;（2）短期而言,新疆30个贫困县的收入流动性、贫困代际传递对反贫困的效果存在异质性。因此,建议制定以提高收入流动性和减少贫困代际传递为目标的对策和机制,并注重实行差异化措施来达到反贫困效果。     

Capital Mobility, Agglomeration and Corporate Tax Rates: Is the Race to the Bottom for Real?

Based on a data set for 19 OECD countries for the period 1981–2001,we estimate the impact of FDI on corporate tax rates, wherechanges in FDI are a measure for changes in capital mobility.So far the literature has been concerned with the related butrather different question as to the sensitivity of FDI to taxrates. Our article takes an opposite perspective and asks whatthe impact of capital mobility is on corporate tax rates. Indoing so, we explicitly take the role of agglomeration intoaccount. In theory, core countries can afford a higher tax ratecompared to peripheral countries. In our estimation strategy,we instrument capital mobility to deal with reverse causality.The main conclusion is that increased international capitalmobility, measured by FDI flows, implies a lower corporate taxrate. But we also find that agglomeration matters: core countrieshave a higher corporate tax rate than peripheral countries.If there is a race to the bottom, it seems that it is more realfor some countries than others. (JEL code: H25)     

中国贫困代际传递及动态趋势实证研究

文章运用CHNS调查数据,对城乡居民家庭贫困代际传递及动态趋势进行了研究。静态分析表明:农村贫困代际传递机会要明显大于城市,且城乡差距明显;个体行业差异显著影响个体贫困发生机会,但父辈行业差异对子代贫困发生机会的代际影响不明显,健康、教育降低子代贫困作用巨大,同等条件下女性贫困发生机会要高于男性,贫困发生机会与年龄呈"U"关系。动态分析表明:虽然中国整体面的贫困水平逐年下降,但贫困代际传递机会基本呈上升趋势;农村贫困代际传递机会大于城市;城乡子代贫困机会差距自20世纪90年代以来在拉大。     

Cost-effectiveness of dedicated dietitians for hyperphosphatemia management among hemodialysis patients in Lebanon: results from the Nutrition Education for Management of Osteodystrophy trial

Aim: To assess the cost-effectiveness of nutrition education by dedicated dietitians (DD) for hyperphosphatemia management among hemodialysis patients.

Materials and methods: This was a trial-based economic evaluation in 12 Lebanese hospital-based units. In total, 545 prevalent patients were cluster randomized to DD, trained hospital dietitian (THD), and existing practice (EP) groups. During Phase I (6 months), DD (n?=?116) received intensive education by DD trained on renal nutrition, THD (n?=?299) received care from trained hospital dietitians, and EP (n?=?130) received usual care from untrained hospital dietitians. Patients were followed-up during Phase II (6 months).

Results: At baseline, EP had the lowest weekly hemodialysis time, and DD had the highest serum phosphorus and malnutrition-inflammation score. The additional costs of the intervention were low compared with the societal costs (DD: $76.7, $21,007.7; EP: $4.6, $18,675.4; THD: $17.4, $20,078.6, respectively). Between Phases I and II, DD showed the greatest decline in services use and societal costs (DD: –$2,364.0; EP: –$1,727.7; THD: –$1,105.7). At endline, DD experienced the highest decrease in adjusted serum phosphorus (DD: –0.32; EP: +0.16; THD: +0.04?mg/dL), no difference in quality-adjusted life-years (QALY), and the highest societal costs. DD had a cost-effectiveness ratio of $7,853.6 per 1?mg decrease in phosphorus, compared with EP; and was dominated by THD. Regarding QALY, DD was dominated by EP and THD. The results were sensitive to changes in key parameters.

Limitations: The analysis depended on numerous assumptions. Interpreting the results is limited by the significant baseline differences in key parameters, suggestive of higher baseline societal costs in DD.

Conclusions: DD yielded the greatest effectiveness and decrease in societal costs, but did not affect QALY. Regarding serum phosphorus, DD was likely to be cost-effective compared with EP, but had a low cost-effectiveness probability compared with THD. Regarding QALY, DD was not likely to be cost-effective. Assessing the long-term cost-effectiveness of DD, on similar groups, is recommended.     

一种新的机器人自组网群组运动控制模型

针对现有机器人自组网运动控制模型无法真实反映机器人运动规律的问题,提出一种新的群组运动控制模型(group movement control model,GMCM)。该模型基于机器人通用运动学模型,采用群组控制算法,对传统群组随机运动模型——参考点群组运动模型(reference point groupmobility,RPGM)进行修改,可描述机器人编队解散和集合的运动状态,满足群组分割与合并的需求。进一步实现GMCM模型,并基于GMCM,RPGM,DRGM模型对机器人自组网路由协议进行模拟仿真。结果表明,基于GMCM模型仿真时协议性能有所降低,较为真实地模拟了机器人编队运动,对机器人自组网的研究具有一定的参考价值。