中国居民个人收入流动性的城乡比较

本文利用了中国健康和营养调查的面板数据,采用普通最小二乘法与分位数回归等计量方法定量分析比较了1989至2006年间短期(2-4年)和长期(8-9年)的个人收入流动性的城乡差异。无论是短期还是长期,农村和城市在个人收入流动的模式上没有显著差别。与农村相比,城市的流动水平要低一些。其中的原因是城市高收入端的流动水平非常低,最近(2004至2006年)甚至出现了富者愈富、穷者愈穷的流动模式。这是十分需要我们警惕的。     

Dual citizenship and theories of democracy

Dual/multiple citizenship has become a widespread phenomenon in many parts of the world. This acceptance or tolerance of overlapping memberships in political communities represents an important element in the ongoing readjustment of the relationship between citizens and political communities in democratic systems. This article has two goals and parts. First, it evaluates dual citizenship from the perspective of five normative theories of democracy. Liberal and republican as well as multicultural and deliberative understandings of democracy deliver a broad spectrum of arguments in favour of dual citizenship. Only communitarians fear that dual citizenship endangers national democracies. Nevertheless, empirical evidence and national policies largely contradict these fears. The second part of the article reverses the perspective and shows that most theories of democracy do not only legitimate and facilitate the acceptance of dual citizenship – the phenomenon of multiple citizenships induces innovation in democratic theory in turn. A second look at the relationship between dual citizenship and theories of democracy reveals that dual citizenship stimulates refinements, expansions and reconceptualisations of these theories for a transnationalising world.     

Using Gas Chromatography with Ion Mobility Spectrometry to Resolve Explosive Compounds in the Presence of Interferents*

Abstract: Ion mobility spectrometry (IMS) is a valued field detection technology because of its speed and high sensitivity, but IMS cannot easily resolve analytes of interest within mixtures. Coupling gas chromatography (GC) to IMS adds a separation capability to resolve complex matrices. A GC‐IONSCAN^® operated in IMS and GC/IMS modes was evaluated with combinations of five explosives and four interferents. In 100 explosive/interferent combinations, IMS yielded 21 false positives while GC/IMS substantially reduced the occurrence of false positives to one. In addition, the results indicate that through redesign or modification of the preconcentrator there would be significant advantages to using GC/IMS, such as enhancement of the linear dynamic range (LDR) in some situations. By balancing sensitivity with LDR, GC/IMS could prove to be a very advantageous tool when addressing real world complex mixture situations.     

改革以来中国农民工流动机制变迁的考察

改革开放以来中国农民工流动机制变迁经历三个基本阶段：1978-1992年以乡镇企业发展为主体的产业流动机制建设时期;1992-2002年以国企改制和非公经济发展为主体的社会主义市场经济机制建设时期;2002年至今以科学发展观为指导的城乡一体发展体制建设时期。其基本特点与历史经验是：第一,家庭联产承包责任制与社会主义市场经济体制搭建了农民工流动机制的基本框架。第二,从城乡二元流动机制走向城乡一体流动机制。第三,从产业流动机制到地域流动机制有序放开。第四,在城市流动机制中,以沿海城市与中小城市为吸纳主体。农民工市民化以小城镇为吸纳主体。改革以来农民工流动机制变迁,积累了宝贵的经验,也留下了深刻的启示。     

Testing the Hollowing-Out Thesis

In recent years, many economists have argued that governments are discarding pegged exchange rates in favor of alternative exchange rate regimes such as monetary unions and currency boards on the one hand, or floating exchange rates on the other. Capital mobility, such economists argue, has made pegged exchange rates costly to maintain for long periods, and thus the pegging option is being “hollowed-out.” Few, however, have tried to present evidence that capital mobility has a direct effect on exchange rate regime choices. I present two sets of tests using different measures of capital mobility that provide qualified confirmation that developing countries peg less as capital mobility rises. These tests indicate that direct measures of capital mobility have some correlation with de facto exchange rate regimes but not with de jure exchange rate regimes. Capital flows, a consequence of capital mobility, may have a direct effect on the choices of both de jure and de facto regimes. Governments do not make changes in their declared exchange rate policies in rational anticipation of the growing costs of pegging associated with increasing capital mobility. Rather, governments normally adapt their declared exchange rate policies after capital flows have increased and actual exchange rates have become more difficult to manage. The tests also indicate that hollowing-out has not only been the result of systemic factors such as increasing capital mobility and capital flows, but also due to domestic factors such as growing public sector indebtedness and the spread of democracy.     

Observing FDI spillover transmission channels: evidence from firms in Uganda

Abstract

We observe and analyse three intra-industry foreign direct investment (FDI) spillover transmission channels using unique firm-level data collected from on-site interviews and observations regarding domestic and foreign firms operating in Uganda in 2015. Our main results are: (1) the spillover effects mainly depend on the channel(s) by which they occur (the competition channel is most important while spillover benefits through the worker mobility and the imitation channels are less prevalent) and (2) both positive and negative spillover effects occur within the same channel and, moreover, effects differ by channel for the same case. These are novel and challenging findings that have not yet been recognised in theoretical and empirical research on FDI spillovers. Our results suggest that long-term pecuniary spillover effects are predominantly stimulated via the competition channel and show that only limited short-term and long-term technological spillover effects occur through the imitation and the movement of workers channels. These channels are not only less prevalent, but also appear to be constrained by competition-determined spillovers. We are confident that these directions for future research will have a high pay-off because, as shown by this exploratory fieldwork, a more complete picture of the spillover effects is reached when the channels are considered simultaneously.     

More Than Meets the Market? Landlord Agency in the Illinois Housing Choice Voucher Program

The federal Housing Choice Voucher Program currently serves as one of the nation's predominant strategies for providing affordable rental housing for low-income households. The program is designed around two goals: first, to uphold the U.S. Department of Housing and Urban Development's mission to provide safe, decent, and affordable housing; and second, to facilitate household residential location choices, with the idea that such choices can leverage other types of nonhousing opportunities for assisted households. While scholarly research has described a range of positive and negative household outcomes associated with the voucher subsidy, less is known about how those outcomes are produced on the ground. This research describes findings from 72 in-depth interviews with Illinois landlords and other voucher program stakeholders regarding their experiences with the program, with the goal of linking landlord practices to tenant outcomes. Findings of this research underscore the substantial influence that landlords have on assisted-household residential location choice and tenure, and show the potential for voucher program design to more actively engage with landlords as providers of supports that extend beyond the housing unit.     

Mobility among Pentecostal pastors and migratory “miracles”

Taking into account space and identity in the movements of transnational religious actors, this article is engaged in reframing and reinterpreting experience by investigating the articulation of migratory and religious experiences as expressed by the pastors of four different Brussels-based Pentecostal congregations. The analysis of pastors' narratives, as they reassess the circumstances that brought them from Sub-Saharan Africa or Latin America to Belgium, reveals an interwoven process of geographical shifts and “divine” actions: this offers us an opportunity to consider an implied double process of mobility and religion. On the one hand, we can see how Pentecostalism transforms and subverts their immigrant experience by allowing for an alternate narrative of this experience. On the other hand, we can analyse the effect of the migratory experience on the discourse and religious practices in the new social context, more particularly through the identification of such “Children of God” with missionary duties towards their fellow immigrants. An analysis of the pastors' narratives also offers a particularly relevant opportunity to question the tensions between processes of endogenous identification (missionaries elected by God and working towards the extension of his “kingdom”) and exogenous assignment, repeated associations of otherness and strangeness, and the stigma coupled with pejorative characterizations of the “migrant”.     

Free and unfree labor in Qing China: Emigration and escape among the bannermen of northeast China, 1789–1909

Though internal migration in China during the Qing era (1644–1911) was mostly unrestricted, the government tightly controlled the movement of peasants who worked state lands in frontier regions and certain other locations. Such peasants accounted for 5–10% of China's population. In the state farms of northeast China, households could move legally only from one place to another within the system. Departure from the system was illegal. In this article, one of the first quantitative studies of migration in late imperial China, we apply discrete-time event-history methods to longitudinal, nominative household register data from six northeast Chinese state farm systems to compare how characteristics of the farm system, village, and household influenced the chances of legal moves and illegal departures. We show that among these state peasants, who were supposedly “unfree,” migration was not uncommon. We also show that the determinants of legal and illegal migration differed substantially. We conclude with a discussion of the implications of these findings for our understanding of migration processes in late imperial China.     

Visas and work permits: Possible global negotiating initiatives

We discuss global options for initiatives intended to ameliorate adverse impacts of visa and work permit systems used by national governments around the world. We first describe and document some of their effects, noting the relative lack of other research work on these issues. We then discuss proposals for a new and supplemental global visa structure which have been made as part of the Mode 4 GATS negotiations in the WTO, suggesting that the GATS/WTO may be an imperfect institutional location for negotiating on these matters. We then evaluate other approaches, including what realistically could be possible if a new body specifically created for global negotiation in the area were to be used.