Bridging the Pacific: Toward Free Trade and Investment Between China and the United States
The terrain of the world trading system is shifting as countries in Asia, Europe, and North America negotiate new trade agreements. However, none of these talks include both China and the United States, the two biggest economies in the world. In this pathbreaking study, C. Fred Bergsten, Gary Clyde Hufbauer, and Sean Miner argue that China and the United States would benefit substantially from a bilateral free trade and investment accord. In the process, they contend, each country would also achieve progress in addressing its internal economic challenges, such as the low saving rate in the United States. Achieving greater trade and investment integration could be accomplished with one comprehensive effort or through step-by-step negotiations over key issues. The authors call on the United States to seek liberalization of China's services sector as vital to securing an agreement, and they explain that such contentious matters as cyberespionage and currency manipulation be handled through parallel negotiations rather than in the agreement itself. This is an important study of the benefits and difficulties of a complex matter that could yield dividends to the two economies and help stabilize the security and well-being of the rest of the world.
Service Sector Reform in China
Faced with slowing economic growth, Chinese policymakers now recognize that the service sector of the economy-transportation, communications, finance, and health care-could spur economic activity and employment. The catch is that China must reform these and other areas to accomplish this goal. Chinese leaders have outlined an ambitious agenda for reform, but myriad vested interests could slow or block their plans. This Policy Brief evaluates the steps taken so far and the difficulties that lie ahead in implementing them. If policymakers fail to reform and open up the service sector, they run the risk of seriously impairing China's growth prospects.
Computational fluid dynamics as a development tool for rotary blood pumps.
Computational fluid dynamics (CFD) is beginning to significantly impact the development of biomedical devices, in particular rotary cardiac assist devices. The University of Pittsburgh's McGowan Center for Artificial Organ Development has extensively used CFD as the primary tool to analyze and design a novel axial flow blood pump having a magnetically suspended rotor. The blood-contacting surfaces of the pump were developed using a design strategy based on CFD that involved closely coupling a Navier-Stokes solver to a parameterized geometry modeler and advanced mesh movement techniques. CFD-based blood damage models for shear-induced hemolysis as well as surrogate functions describing thrombosis potential were employed to help guide design improvements. This CFD-based design approach resulted in the timely development of a pump subjected to multiple geometric refinements without building expensive physical prototypes for each design iteration. A physical prototype of the final improved pump was fabricated and experimentally analyzed using particle imaging flow visualization. The CFD predicted results correlated well with the experimental data including pressure-flow (H-Q) performance and specific flow field features. It is estimated that the present CFD-based design approach shortened the overall design time frame from an order of years to months.