从古典著作看罗马的土地耕种方式

农业是罗马经济发展的重要组成部分,土地耕种又是关乎农业产量高低的重要因素之一。在罗马古典著作家的作品中,对于土地耕种方式,除传统的休耕外,还提到土地的翻耕、轮种和套种。这些耕种方式在一定程度上对罗马农业发展起到了促进作用。     

基于ARCH类模型的国际粮价波动规律研究

粮价的波动最终会给一国的粮食安全带来巨大风险。了解国际粮价的波动特征有助于采取相应的措施稳定粮价,避免粮价波动的国际传导对国内粮食市场进而对粮食安全产生不利影响。通过建立ARCH类模型,分析各类粮食国际价格的波动规律。得出的主要结论有:国际粮价波动存在明显的集族性;外部冲击对国际粮价波动具有持久性影响;国际粮食市场不存在高风险高粮价的特征;国际粮价波动具有显著的非对称性,而且粮价上涨的信息引发的粮价波动要大于粮价下降的信息引发的波动。     

论土地承包经营权流转与农民利益的保护

农民为我国现代化建设已经作出了巨大牺牲,在工业反哺农业、城市反哺农村的今天,土地承包经营权流转制度的设计必须要把保护农民利益放在首位。在坚持农村土地承包关系长久不变的前提下,大力推进新型农村社会养老保险试点建设,使农民能够自愿地、放心地参与土地流转。同时,通过完善土地承包经营权流转制度以及提高政府工作意识等手段,确保农民意愿在土地流转过程中受到尊重。     

Best Nonparametric Bounds on Demand Responses

This paper uses revealed preference inequalities to provide the tightest possible (best) nonparametric bounds on predicted consumer responses to price changes using consumer‐level data over a finite set of relative price changes. These responses are allowed to vary nonparametrically across the income distribution. This is achieved by combining the theory of revealed preference with the semiparametric estimation of consumer expansion paths (Engel curves). We label these expansion path based bounds on demand responses as E‐bounds. Deviations from revealed preference restrictions are measured by preference perturbations which are shown to usefully characterize taste change and to provide a stochastic environment within which violations of revealed preference inequalities can be assessed.     

A generalisation of the Farrell cost efficiency measure applicable to non-fully competitive settings

This paper enhances cost efficiency measurement methods to account for situations where the input prices can depend on negotiation or tend to qualitatively differentiate the resources available at each decision making unit. In these circumstances, there are some shortcomings in the cost efficiency measure described in the data envelopment analysis (DEA) literature. This paper proposes new models and measures for cost efficiency evaluation that overcome the limitations of the existing DEA models. The applicability of the measures developed is illustrated in the context of the analysis of bank branch performance.     

The relationship between conflict events and commodity prices in Sudan

Though recent literature uncovers linkages between commodity prices and conflict, the causal direction of the relationship remains ambiguous. We attempt to contribute to this strand of research by studying the dynamic relationship of commodity prices and the onsets of conflict events in Sudan. Using monthly data ranging from January 2001 through December 2012, we identify a structural breakpoint in the multivariate time series model of prices of the three staple foods (sorghum, millet, and wheat) and conflict measure (number of conflict events) in September of 2011. Applying structural vector autoregression (SVAR) and linear non-Gaussian acyclic model (LiNGAM), we find that wheat price fluctuation is a root cause of conflict events in Sudan. We recommend several policy and programmatic suggestions structured toward production, subsidy, price regulation and support for rural farmers and consumers to stabilize commodity prices.     

土地革命时期毛泽东的马克思主义中国化思想

毛泽东在土地革命时期尽管没有直接提出马克思主义中国化的概念命题,但他却实现了对马克思主义中国化的实践诠释,积累了大量的历史经验,蕴含着极为丰富的马克思主义中国化思想。他首先明确了马克思主义中国化的首要前提就是要树立对马克思主义的理想信仰;其次,马克思主义中国化的重要内容就是坚持不懈地学习马克思列宁主义;第三,马克思主义中国化的根本立足点就是要坚持从中国的具体实际出发;第四,马克思主义中国化的关键性环节就是实现实践经验的马克思主义化。     

Reshaping the Social: A Comparison of Fasu and Kubo-Febi Approaches to Incorporating Land Groups

In Papua New Guinea, local communities increasingly strive to render themselves ‘visible’ to the state as entities entitled to control and claim benefits from developments on their land. When people commit expressions of social form to paper they inevitably reshape previously operative social and political forms. This article compares ways in which two groups of Papua New Guineans have gone about the process of forming Incorporated Land Groups. Different histories of resource extraction, associated differences in engagement with state and companies and different pre-existing social forms are all reflected in the negotiations described. We discuss people's motivations for drawing up lists of members, the ways they went about this and implications for the communities themselves and for ILG registration more generally. Our analysis draws attention to how outcomes are shaped by scales of differentiation and emergent inequalities within the legal entities being imagined.     

中国古代传统地缘政治的思想评析与现代启示

中国古代传统地缘政治思想偏重于实践,主要包括：北守南融、以藩为屏、以夷制夷、合纵连横、屯垦戍边、富国强兵等。中国古代传统地缘政治思想具有一定的历史进步性,“服事观”确立了中国古代地缘政治层次的治理模式,其对维系中华民族绵延数千年的“大一统”格局发挥了不可替代的作用。本文认为,中国古代传统地缘政治思想也有一定的历史局限性：“中国中心”的地缘观逐渐演变成一种狭隘的世界认知模式;重陆轻海的地缘观导致海权观念淡薄、海洋权益丧失。当代中国特色的地缘政治理论应在继承古代传统思想的同时,对其进行再造和升华。     

我国小城镇发展战略探微

小城镇建设中土地利用非集约化必将制约小城镇的长期发展 ,给日益增长的人口带来巨大的供养风险。必须对小城镇重点发展战略重新进行理性思考 ,只有重点发展部分有潜力的县城和县域中心镇 ,才符合可持续发展战略的要求。为此有关政策应进行相应的调整。