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This paper critically examines China's national security review regime of foreign investment and compares it with that of the United States. Over the years, China has gradually established a comprehensive legal framework for national security review of foreign investment. Recent efforts were made to refine the public enforcement mechanism of the review in tandem with a new "pre-establishment national treatment plus negative list" system under the 2020 Foreign Investment Law. The United States also enacted the Foreign Investment Risk Review Modernization Act of 2018 to enhance its national security review regime. By analyzing the law and practices of China and the United States, this paper finds that the national security review regimes of the two jurisdictions have functional convergences despite some formal divergences caused by diverse political-economy landscapes. Their functional convergences are highlighted by China's local practices, such as the de-facto national security screening in the name of anti-monopoly review. There are many factors affecting China's national security review regime for foreign investment, including the ongoing (and escalating) US-China competition (or conflict) at the international level and the evolution of state or party capitalism at the domestic level. These research findings will not only contribute to the existing comparative law scholarship but also benefit multinational enterprises that seek to enter Chinese and the US markets. [ABSTRACT FROM AUTHOR]

The rapid growth of China's national resources in the space domain may change the gap in power between China and the United States in relevant international rulemaking. This article proposes an analytical framework for identifying, comparing, and analyzing states' power resources critical to international rulemaking and uses the framework to compare the relevant resources between China and the United States in the space domain. First, this paper develops a method for identifying resources crucial to international rulemaking in outer space. The relevant resources of the two countries are then compared in this article. Finally, the article explores comparative advantages, consensus, differences, and cooperation possibilities of the two countries in specific international space rules. The framework could be adapted to compare diverse nations' resources critical to international rulemaking in other fields; it contributes to research on space law, international legislation, and national power. [ABSTRACT FROM AUTHOR]

The US global leadership in science and technology has greatly benefitted from immigrants from other countries, most notably from China in the recent decades. However, feeling the pressure of potential federal investigations since the 2018 launch of the China Initiative, scientists of Chinese descent in the United States now face higher incentives to leave the United States and lower incentives to apply for federal grants. Analyzing data pertaining to institutional affiliations of more than 200 million scientific papers, we find a steady increase in the return migration of scientists of Chinese descent from the United States to China. We also conducted a survey of scientists of Chinese descent employed by US universities in tenured or tenure- track positions (n = 1,304), with results revealing general feelings of fear and anxiety that lead them to consider leaving the United States and/or stop applying for federal grants. If the situation is not corrected, American science will likely suffer the loss of scientific talent to China and other countries. [ABSTRACT FROM AUTHOR]

As the two largest economies in the world, the investor sentiment and stock return of China and the United States are the focus of global attention. In this paper, we study the dynamic spillover effects of investor sentiment and return between China and the United States. First, we use the relative price differences of 9 dual-listed companies in China and the United States simultaneously to verify whether investor sentiment affects stock returns. We find a significant positive correlation between the relative price difference of dual-listed companies and the difference of investor sentiment, indicating that the investor sentiment index indeed affects stock prices. Next, we construct the TVP-VAR model to study the dynamic spillover effects of investor sentiment and the return between China and the United States. Through the time-varying impulse response, we find investor sentiment has a significant dynamic impact on returns. Therefore, investment sentiment contagion and stock market linkage between China and the United States are obvious. In addition, we conduct various robust tests, and all results are consistent. [ABSTRACT FROM AUTHOR]

Unmanned Aerial Vehicle (UAV) Remote sensing (RS) has unique advantages over traditional satellite RS, including convenience, high resolution, affordability and fast acquisition speed, making it widely used in many fields. To provide an overview of the development of UAV RS applications during the past decade, we screened related publications from the Web of Science core database from 2010 to 2021, built co-author networks, a discipline interaction network, a keywords timeline view, a co-citation cluster, and detected burst citations using bibliometrics and social network analysis. Our results show that: (1) The number of UAV RS publications had an increasing trend, with explosive growth in the past five years. The number of papers published by China and the United States (US) is far ahead in this field; (2) The US has currently the greatest influence in this field through the largest number of international cooperations. Cooperation is mainly concentrated in countries and institutions with a large number of publications but is not widely distributed. (3) The application of UAV RS involves multiple interdisciplinary subjects, among which "Environmental Science and Ecology" ranks first; (4) Future research trends of UAV RS are expected to be related to artificial intelligence (e.g., artificial neural networks-based research). This paper provides a scientific basis and guidance for future developments of UAV RS applications, which can help the research community to better grasp the developments of this field. [ABSTRACT FROM AUTHOR]

Phytoplankton blooms have caused many serious public safety incidents and eco-environmental problems worldwide and became a focus issue for research. Accurate and rapid monitoring of phytoplankton blooms is critical for forecasting, treating, and management. With the advantages of large spatial coverage and high temporal resolution, remote sensing has been widely used to monitor phytoplankton blooms. Numerous advances have been made in the remote sensing of phytoplankton blooms, biomass, and phenology over the past several decades. To fully understand the development history, research hotspots, and future trends of remote-sensing technology in the study of phytoplankton blooms, we conducted a comprehensive review to systematically analyze the research trends in the remote sensing of phytoplankton blooms through bibliometrics. Our findings showed that research on the use of remote-sensing technology in this field increased substantially in the past 30 years. "Oceanography," "Environmental Sciences," and "Remote Sensing" are the most popular subject categories. Remote Sensing of Environment, Journal of Geophysical Research: Oceans, and International Journal of Remote Sensing were the journals with the most published articles. The results of the analysis of international influence and cooperation showed that the United States had the greatest influence in this field and that the cooperation between China and the United States was the closest. The Chinese Academy of Sciences published the largest number of papers, reaching 542 articles. Keyword and topic analysis results showed that "phytoplankton," "chlorophyll," and "ocean" were the most frequently occurring keywords, while "eutrophication management and monitoring," "climate change," "lakes," and "remote-sensing algorithms" were the most popular research topics in recent years. Researchers are now paying increasing attention to the phenological response of phytoplankton under the conditions of climate change and the application of new remote-sensing methods. With the development of new remote-sensing technology and the expansion of phytoplankton research, future research should focus on (1) accurate observation of phytoplankton blooms; (2) the traits of phytoplankton blooms; and (3) the drivers, early warning, and management of phytoplankton blooms. In addition, we discuss the future challenges and opportunities in the use of remote sensing in phytoplankton blooms. Our review will promote a deeper and wider understanding of the field. [ABSTRACT FROM AUTHOR]

Ecosystem service (ES) supply and human needs are often spatially conflicting. Although the synergy between them is crucial for global sustainability, little is known about the real human needs for ES (RHN) and their integration with actual ES supply. This study established a novel hierarchy of human needs for ES. Taking China and the United States as case studies, multiple types of actual ES supplies and multi-dimensional human needs were integrated to calculate the value of effective ecosystem service supply (EFS). The results suggested that the overall EFS in the United States is higher than that in China. There was a significant gap between the United States and China in areas with the first grade of EFS (F-EFS); the United States accounted for 68% of the total in such areas in the two countries combined. Whereas China accounted for 32%, mainly concentrated in the Yangtze River Delta urban group. China exhibited a gradually decreasing trend from the east coast to the northwest. Moreover, the F-EFS in China displayed more spatial concentration than in the United States. It was also discovered that the reason for the gap was a sharp spatial mismatch between actual ES supply and RHN in China. Nevertheless, China was specifically found to have the potential to enhance its EFS. This paper proposes some solutions to mitigate the gap and also offers guidance on the realization of Sustainable Development Goals (SDGs). [Display omitted] • A novel hierarchy of human needs for ecosystem services was proposed. • A large-scale analysis integrated actual ES supply and real human needs. • Actual ES supply embodying goods-based and non-goods-based ES flows were assessed. • The overall effective ecosystem service supply in the US was higher than in China. • A sharp spatial mismatch between ES supply and human needs was discovered in China. [ABSTRACT FROM AUTHOR]