自由贸易区的国际规则

本文中的“自由贸易区”概念涵盖特别（自由）经济区、免税（外国）贸易区、出口加工区、企业区以及其他类似区域。     

A Cramér-type large deviation theorem for sums of functions of higher order non-overlapping spacings

Let U ₁, U ₂, . . . , U _n–1 be an ordered sample from a Uniform [0,1] distribution. The non-overlapping uniform spacings of order s are defined as \({G_{i}^{(s)} =U_{is} -U_{(i-1)s}, i=1,2,\ldots,N^\prime, G_{N^\prime+1}^{(s)} =1-U_{N^\prime s}}\) with notation U ₀ = 0, U _n = 1, where \({N^\prime=\left\lfloor n/s\right\rfloor}\) is the integer part of n/s. Let \({ N=\left\lceil n/s\right\rceil}\) be the smallest integer greater than or equal to n/s, f _m (u), m = 1, 2, . . . , N, be a sequence of real-valued Borel-measurable functions. In this article a Cramér type large deviation theorem for the statistic \({f_{1,n} (nG_{1}^{(s)})+\cdots+f_{N,n} (nG_{N}^{(s)} )}\) is proved.     

乌中贸易关系中存在的问题及前景展望

尽管中国和乌兹别克斯坦之间的贸易关系已经历时长久,但是至今为止还没有学者对这方面问题做深入的研究,学者们也没有广泛分析这两个国家间的双边经贸关系所存在的问题。本文主要研究乌中之间的贸易及其发展趋势和产品结构,考察乌中双边经贸关系中存在的主要问题,并探索乌中贸易的未来发展机会和前景。     

Are multiple labels on food products beneficial or simply ignored?

This study examines consumer preferences and willingness to pay (WTP) for organic wheat products exhibiting single labels, as well as multiple labels, including organic. The additional labels considered are related to the organic label (non-genetically modified organism [non-GMO]) or perceived as health-promoting (gluten-free, low-carb, sugar-free). Study data were collected using a consumer survey conducted online in 2017 across 16 U.S. western states and analyzed using random parameter logit models. Findings show that organic-labeled wheat products with additional claims were valued equally or less than the organic only version. Overall, consumer higher objective and subjective knowledge of organic standards, as well as preferences for gluten-free products, increased their WTP for organic wheat products. Consumers unfamiliar with organic standards valued the non-GMO label over the organic label. Additionally, consumer WTP for health-related claims on hedonistic products was low or even negative. Hence, multiple labels on organic products generally provide no additional consumer benefit and are likely ignored. Study findings suggest that using the claim that most distinguishes the product, or is most salient, may improve product pricing. Also, non-GMO certification rather than organic certification should be considered for some markets. Finally, consumers with preferences for gluten-free products represent a potential market for organic wheat products.     

Foreign direct investment and civil violence in Sub-Saharan Africa

Despite the steady growth in foreign direct investment (FDI) flow into Sub-Saharan Africa (SSA), which is facilitated by the United Nations "2030 Agenda for Sustainable Development", economic development in SSA countries remains relatively weak, due in part to frequent incidents of civil violence. The critics of FDI inflow into SSA posit that the cross-border capital flow fuels civil conflict and unrest, whilst the proponents maintain that FDI inflow helps developing countries raise their economies. To reconcile these two views, this paper considers the impact of FDI on civil violence in SSA by distinguishing recipient industries of FDI. The results from a new general equilibrium theory suggest that an increase in resource-directed FDI inflow to countries where the resource sector is skilled labour (unskilled labour) intensive reduces (increases, respectively) the risk of violence. Using a panel data consisting of 34 SSA countries for 1972–2013, the dynamic panel estimates provide support for our theoretical findings. In particular, an increase in FDI inflow reduces the risk of civil violence for skilled labour intensive fuel-resource-rich SSA countries. However, the likelihood of violence can increase in FDI inflow for countries that are rich in unskilled labour intensive non-fuel, ore and other mineral resources.     

The problem of political calculation in autocracies

Autocrats depend on their followers to remain in power. They compensate the followers in exchange for their support. Yet, they have few tools to guide them in determining the compensation commensurate with the value of each follower’s support. The failure of political calculation can easily lead to the autocrat’s demise. In semi-authoritarian and democratic regimes, elections provide a solution to the problem of political calculation. In elections, citizens cast votes in exchange for public or private goods. Thus, the number of votes received by candidates and parties can be used as a proxy for the value of their support.