Are Investment Promotion Agencies Doing the Thing Right? Evidence from China

*Revised：What Determines Inward FDI in China? --An empirical study using firm-level data(DP-2013-E-004, April 7

Stream Flow Prediction by Remote Sensing and Genetic Programming

A genetic programming (GP)-based, nonlinear modeling structure relates soil moisture with synthetic-aperture-radar (SAR) images to present representative soil moisture estimates at the watershed scale. Surface soil moisture measurement is difficult to obtain over a large area due to a variety of soil permeability values and soil textures. Point measurements can be used on a small-scale area, but it is impossible to acquire such information effectively in large-scale watersheds. This model exhibits the capacity to assimilate SAR images and relevant geoenvironmental parameters to measure soil moisture

Do Vertical Spillovers Differ by Investors' Productivity? Theory and Evidence from Vietnam

Developing countries are eager to host foreign direct investment to receive positive technology spillovers to their local firms. However, what types of foreign firms are desirable for the host country to achieve spillovers best? We address this question using firm-level panel data from Vietnam to investigate whether foreign Asian investors in downstream sectors with different productivity affects the productivity of local Vietnamese firms in upstream sectors differently. Using endogenous structural breaks, we divide Asian investors into low-, middle-, and high-productivity groups. The results suggest that the presence of the middle group has the strongest positive spillover effect. The differential spillover effects can be explained by a simple model with vertical linkages and productivity-enhancing investment by local suppliers. The theoretical mechanism is also empirically confirmed

CLINICAL APPLICATION OF THE SECOND GENERATION OF AMPLATZER PATENT DUCTUS ARTERIOSUS OCCLUDER IN THE INTERVENTIONAL CLOSURE OF CONGENITAL HEART DISEASE AND CASE SERIES

Background: Some patients with structural heart disease are typically treated or improved by minimally invasive surgeries. Aim: To summarize the efficacy and experience in the treatment of congenital heart disease (CHD) using the second generation of Amplatzer patent ductus arteriosus (ADO- II) occluder. Methods: A total of 37 patients who were admitted to the cardiac surgery department of our hospital from June 2014 to April 2019 were included. After preoperative echocardiography and clinical screening, intraoperative transthoracic echocardiography, and cardiovascular angiography, postoperative echocardiography was carried out to evaluate the incidence of residual shunt and the location and morphology of the ADO-II occluder, as well as postoperative complications. Results: All patients were successfully treated using the ADO-II occluder. There were 27 (73%) cases with patent ductus arteriosus (PDA), as well as 5 (13.5%) cases with ventricular septal defect (VSD), 1 case (2.7%) with VSD combined with PDA, 1 case (2.7%) with aortopulmonary collateral arteries combined with PDA, 1 case (2.7%) with right coronary artery-right atrial fistula, and 2 (5.4%) cases were recanalized after ligation of the main pulmonary artery. All patients had no obvious abnormality in ECG reexamination one month after surgery; The x-ray showed no displacement and shedding, and no long-term significant residual shunt was found in transthoracic echocardiography. No death was reported. Conclusions: The ADO-II occluder is relatively simple to operate, with a high success rate and few complications, and it can be applied to not only PDA occlusion but also to other CHDs, making it worthy of further clinical promotion under the premise of grasping the indicators of interventional therapy

Do Vertical Spillovers Differ by Investors' Productivity? Theory and Evidence from Vietnam

Developing countries are eager to host foreign direct investment to receive positive technology spillovers to their local firms. However, what types of foreign firms are desirable for the host country to achieve spillovers best? We address this question using firm-level panel data from Vietnam to investigate whether foreign Asian investors in downstream sectors with different productivity affects the productivity of local Vietnamese firms in upstream sectors differently. Using endogenous structural breaks, we divide Asian investors into low-, middle-, and high-productivity groups. The results suggest that the presence of the middle group has the strongest positive spillover effect. The differential spillover effects can be explained by a simple model with vertical linkages and productivity-enhancing investment by local suppliers. The theoretical mechanism is also empirically confirmed

Do Vertical Spillovers Differ by Investors' Productivity? Theory and Evidence from Vietnam

Developing countries are eager to host foreign direct investment to receive positive technology spillovers to their local firms. However, what types of foreign firms are desirable for the host country to achieve spillovers best? We address this question using firm-level panel data from Vietnam to investigate whether foreign Asian investors in downstream sectors with different productivity affects the productivity of local Vietnamese firms in upstream sectors differently. Using endogenous structural breaks, we divide Asian investors into low-, middle-, and high-productivity groups. The results suggest that the presence of the middle group has the strongest positive spillover effect. The differential spillover effects can be explained by a simple model with vertical linkages and productivity-enhancing investment by local suppliers. The theoretical mechanism is also empirically confirmed