Can Tariff-Jumping Foreign Investment Be Beneficial?

Can tariff-jumping foreign investment be beneficial? It is well known that tariff-jumping foreign investment is costly. The tax paid by foreign firms may not be sufficient to offset that cost. We present a model that incorporates two additional benefits of foreign investment. Being more efficient, foreign firms generally pay higher wages than domestic firms and generate spillovers that enable domestic firms to become more efficient and competitive. Our analysis suggests that attracting foreign investment through import protection can improve welfare if the spillover effect is significant. However, once domestic firms have learnt their trade, developing economies should liberalize trade to reduce the distortion cost.

A General Model of Comparative Advantage and the North-South Trade

Comparative advantage is the most important foundation for world trade. Yet comparative advantage is usually explained by a series of unrelated models. We present a general model that incorporates all three distinct sources of comparative advantage: differences in technologies, differences in factor endowments, and differences in external economies of scale. Apart from being a versatile teaching tool, this model is especially appropriate for describing the trade pattern between developed and developing economies and for analyzing some important issues of trade policy and industrialization relevant for developing economies.

The Role of the Real Exchange Rate Adjustment in Expanding Service Employment in China

It is widely accepted that China needs to shift from its past mode of export-led growth and start to rely more on domestic demand. What role could the real appreciation of the Chinese yuan play in this regard? We attempt to quantify the impact on the structure of the Chinese economy of the real appreciation of the Chinese yuan. We argue that the potential of the service sector to generate income and jobs may be significantly under-estimated by official statistics, as a result of the under-estimation of household consumption of services. While there is no evidence of large under-valuation for the Chinese yuan, we do find that a real appreciation in the order of 20% would bring the Chinese price level in line with the world average level, after the Balassa-Samuelson effect is factored in. In turn, such a real appreciation could increase the service share of employment by 7%.China; real exchange rate; service sector

Reservoir Characterization during Underbalanced Drilling of Horizontal Wells Based on Real-Time Data Monitoring

In this work, a methodology for characterizing reservoir pore pressure and permeability during underbalanced drilling of horizontal wells was presented. The methodology utilizes a transient multiphase wellbore flow model that is extended with a transient well influx analytical model during underbalanced drilling of horizontal wells. The effects of the density behavior of drilling fluid and wellbore heat transfer are considered in our wellbore flow model. Based on Kneissl’s methodology, an improved method with a different testing procedure was used to estimate the reservoir pore pressure by introducing fluctuations in the bottom hole pressure. To acquire timely basic data for reservoir characterization, a dedicated fully automated control real-time data monitoring system was established. The methodology is applied to a realistic case, and the results indicate that the estimated reservoir pore pressure and permeability fit well to the truth values from well test after drilling. The results also show that the real-time data monitoring system is operational and can provide accurate and complete data set in real time for reservoir characterization. The methodology can handle reservoir characterization during underbalanced drilling of horizontal wells

Complete genome of Phenylobacterium zucineum – a novel facultative intracellular bacterium isolated from human erythroleukemia cell line K562

<p>Abstract</p> <p>Background</p> <p><it>Phenylobacterium zucineum </it>is a recently identified facultative intracellular species isolated from the human leukemia cell line K562. Unlike the known intracellular pathogens, <it>P. zucineum </it>maintains a stable association with its host cell without affecting the growth and morphology of the latter.</p> <p>Results</p> <p>Here, we report the whole genome sequence of the type strain HLK1^T. The genome consists of a circular chromosome (3,996,255 bp) and a circular plasmid (382,976 bp). It encodes 3,861 putative proteins, 42 tRNAs, and a 16S-23S-5S rRNA operon. Comparative genomic analysis revealed that it is phylogenetically closest to <it>Caulobacter crescentus</it>, a model species for cell cycle research. Notably, <it>P. zucineum </it>has a gene that is strikingly similar, both structurally and functionally, to the cell cycle master regulator CtrA of <it>C. crescentus</it>, and most of the genes directly regulated by CtrA in the latter have orthologs in the former.</p> <p>Conclusion</p> <p>This work presents the first complete bacterial genome in the genus <it>Phenylobacterium</it>. Comparative genomic analysis indicated that the CtrA regulon is well conserved between <it>C. crescentus </it>and <it>P. zucineum</it>.</p

Generalized Mutual Synchronization between Two Controlled Interdependent Networks

This paper mainly focuses on the generalized mutual synchronization between two controlled interdependent networks. First, we propose the general model of controlled interdependent networks A and B with time-varying internetwork delays coupling. Then, by constructing Lyapunov functions and utilizing adaptive control technique, some sufficient conditions are established to ensure that the mutual synchronization errors between the state variables of networks A and B can asymptotically converge to zero. Finally, two numerical examples are given to illustrate the effectiveness of the theoretical results and to explore potential application in future smart grid. The simulation results also show how interdependent topologies and internetwork coupling delays influence the mutual synchronizability, which help to design interdependent networks with optimal mutual synchronizability

Propagation of Measurement-While-Drilling Mud Pulse during High Temperature Deep Well Drilling Operations

Signal attenuates while Measurement-While-Drilling (MWD) mud pulse is transmited in drill string during high temperature deep well drilling. In this work, an analytical model for the propagation of mud pulse was presented. The model consists of continuity, momentum, and state equations with analytical solutions based on the linear perturbation analysis. The model can predict the wave speed and attenuation coefficient of mud pulse. The calculated results were compared with the experimental data showing a good agreement. Effects of the angular frequency, static velocity, mud viscosity, and mud density behavior on speed and attenuation coefficients were included in this paper. Simulated results indicate that the effects of angular frequency, static velocity, and mud viscosity are important, and lower frequency, viscosity, and static velocity benefit the transmission of mud pulse. Influenced by density behavior, the speed and attenuation coefficients in drill string are seen to have different values with respect to well depth. For different circulation times, the profiles of speed and attenuation coefficients behave distinctly different especially in lower section. In general, the effects of variables above on speed are seen to be small in comparison