China-US Relations in the Trump Era

To the astonishment of the whole world,against the protest of the American elites,Donald Trump won the presidential election of 2016.Whether you like him or not,President Trump will usher in a new era.Will he fulfill all the promises of the campaign?Will he'make America great again'?Will

The Multi-Polar Structure and New Balance of the China-US Relationship

The multi-polar structure is a new international relationship structure, which differs greatly from both the bi-polar and uni-polar structures in both structure and nature, mainly emerging from the evolution of two aspects： first, the meaning of ＂polar＂ has undergone a major change; and second, beyond the power structure, the relationship structure between nations is much different from the past and is inflicting an increasingly important impact on core implication of the multi-polar the structure. Decentralization is the structure. In the current reality of international politics, decentralization refers to the dissolution of US hegemony, as different nations and power centers are busy competing and cooperating with one another at different levels in accordance with their own advantages and characteristics. Globally, the multi-polar structure manifests a state in which the current power structure is loosening, while international relationships have become more diversified due to their ongoing development. This is the development of a new relationship structure that is of great significance and what calls for our closest attention.

US Competitive Policy toward China and Transformation of China-US Relations

The door to strategic competition between China and the US has opened under the Trump administration, whose strategy, policy and tactics toward China create a grim picture for bilateral relations in the short run. However, the relations in the long term depend both on the state of interplay between various parties in the US, and more importantly on China’s influence and response.

The Underlying Motivations and Long-Term Trends of the US Decoupling of China-US Science and Technology Relations

Since 2018,the US government has adopted a range of restrictive measures on China-US science and technology exchange,as it strives for a decoupling strategy against China.This strategy has brought about historic change in China-US science and technology relations.The US government has set out to obstruct the free flow of technology,data,capital,markets,and talents between China and the United States,thereby changing the basic rationale of China-US science and technology cooperation.The US has multiple underlying motivations for implementing this strategy including recognizing the security threats posed by China’s cutting-edge technology development,treating China as a competitor in global science and technology diplomacy,prompting the backflow of the technological industrial chain,and the strengthened industrial competition between the two countries.Decoupling is one of the competition strategies of the United States.It is aimed at ensuring a favorable position for their national innovation systems,particularly in China-US competition.However,the limitations of the decoupling strategy may not allow the US to achieve what it desires.These limitations also provide space for the two countries to ease their competitive relationship.

Tunable dispersion relations manipulated by strain in skyrmion-based magnonic crystals

We theoretically investigate the propagation characteristics of spin waves in skyrmion-based magnonic crystals. It is found that the dispersion relation can be manipulated by strains through magneto-elastic coupling. Especially, the allowed bands and forbidden bands in dispersion relations shift to higher frequency with strain changing from compressive to tensile,while shifting to lower frequency with strain changing from tensile to compressive. We also confirm that the spin wave with specific frequency can pass the magnonic crystal or be blocked by tuning the strains. The result provides an advanced platform for studying the tunable skyrmion-based spin wave devices.

Understanding the Relationship Between Shrinking Cities and Land Prices:Spatial Pattern,Effectiveness,and Policy Implications

Urban shrinkage has emerged as a widespread phenomenon globally and has a significant impact on land,particularly in terms of land use and price.This study focuses on 2851 county-level cities in China in 2005–2018(excluding Hong Kong,Macao,Taiwan,and‘no data’areas in Qinhai-Tibet Plateau)as the fundamental units of analysis.By employing nighttime light(NTL)data to identify shrinking cities,the propensity score matching(PSM)model was used to quantitatively examine the impact of shrinking cities on land prices,and evaluate the magnitude of this influence.The findings demonstrate the following:1)there were 613 shrinking cities in China,with moderate shrinkage being the most prevalent and severe shrinkage being the least.2)Regional disparities are evident in the spatial distribution of shrinking cities,especially in areas with diverse terrain.3)The spatial pattern of land price exhibits a significant correlated to the economic and administrative levels.4)Shrinking cities significantly negatively impact on the overall land price(ATT=–0.1241,P<0.05).However,the extent of the effect varies significantly among different spatial regions.This study contributes novel insights into the investigation of land prices and shrinking cities,ultimately serving as a foundation for government efforts to promote the sustainable development of urban areas.

Generating Sets of the Complete Semigroup of Binary Relations Defined by Semilattices of the Class Σ8(X, 5)

In this article, we study generating sets of the complete semigroups of binary relations defined by X-semilattices of unions of the class Σ8(X, 5). Found uniquely irreducible generating set for the given semigroups and when X is finite set formulas for calculating the number of elements in generating sets are derived.

Dispersion Relations in Diffraction in Time

In agreement with Titchmarsh’s theorem, we prove that dispersion relations are just the Fourier-transform of the identity, g(x′)=±Sgn(x′)g(x′), which defines the property of being a truncated functions at the origin. On the other hand, we prove that the wave-function of a generalized diffraction in time problem is just the Fourier-transform of a truncated function. Consequently, the existence of dispersion relations for the diffraction in time wave-function follows. We derive these explicit dispersion relations.

Enhancing Data Forwarding Efficiency in SIoT with Multidimensional Social Relations

Effective data communication is a crucial aspect of the Social Internet of Things(SIoT)and continues to be a significant research focus.This paper proposes a data forwarding algorithm based on Multidimensional Social Relations(MSRR)in SIoT to solve this problem.The proposed algorithm separates message forwarding into intra-and cross-community forwarding by analyzing interest traits and social connections among nodes.Three new metrics are defined:the intensity of node social relationships,node activity,and community connectivity.Within the community,messages are sent by determining which node is most similar to the sender by weighing the strength of social connections and node activity.When a node performs cross-community forwarding,the message is forwarded to the most reasonable relay community by measuring the node activity and the connection between communities.The proposed algorithm was compared to three existing routing algorithms in simulation experiments.Results indicate that the proposed algorithmsubstantially improves message delivery efficiency while lessening network overhead and enhancing connectivity and coordination in the SIoT context.

Relational Turkish Text Classification Using Distant Supervised Entities and Relations

Text classification,by automatically categorizing texts,is one of the foundational elements of natural language processing applications.This study investigates how text classification performance can be improved through the integration of entity-relation information obtained from the Wikidata(Wikipedia database)database and BERTbased pre-trained Named Entity Recognition(NER)models.Focusing on a significant challenge in the field of natural language processing(NLP),the research evaluates the potential of using entity and relational information to extract deeper meaning from texts.The adopted methodology encompasses a comprehensive approach that includes text preprocessing,entity detection,and the integration of relational information.Experiments conducted on text datasets in both Turkish and English assess the performance of various classification algorithms,such as Support Vector Machine,Logistic Regression,Deep Neural Network,and Convolutional Neural Network.The results indicate that the integration of entity-relation information can significantly enhance algorithmperformance in text classification tasks and offer new perspectives for information extraction and semantic analysis in NLP applications.Contributions of this work include the utilization of distant supervised entity-relation information in Turkish text classification,the development of a Turkish relational text classification approach,and the creation of a relational database.By demonstrating potential performance improvements through the integration of distant supervised entity-relation information into Turkish text classification,this research aims to support the effectiveness of text-based artificial intelligence(AI)tools.Additionally,it makes significant contributions to the development ofmultilingual text classification systems by adding deeper meaning to text content,thereby providing a valuable addition to current NLP studies and setting an important reference point for future research.

Explanation of Two Important Empirical Relations for Galaxies

The phenomenon of “missing mass” in galaxies has triggered new theoretical exploration, forming a competition between dark matter assumption, modified Newtonian dynamics and modified gravity. Over the past forty years, various versions of the modified scenario have been proposed to simulate the effects of missing mass. These schemes replace the dynamic effect of dark matter by introducing some tiny extra force terms in the dynamic equations. Such extra forces have mainly interactions on large scales of galaxies, such as fitting the Tully-Fisher relation or asymptotically flat rotation curves. The discussion in this paper shows that the evidence of taking the modified schemes as fundamental theory is still insufficient. In this paper, we display a system of simplified galactic dynamical equations derived from weak field and low-speed approximations of Einstein field equations, and then we use it to discuss two important empirical relations in galactic dynamics, namely the Faber-Jackson relation and Tully-Fisher relation, as well as the related fundamental plane. These discussions provide a reference scheme for improving the dispersion of the empirical relations, and also provide a theoretical foundation to analyze the properties of dark matter and galactic structures.

Cooperation Brings Benefits,while Confrontations Wound Chinese Ambassador to the US Cui Tiankai on China-US Relations

The following article appeared in China Today ahead of President Xi Jinping’s visit to the United States in April.The original language has been retained.

China-US Trade Relations:Win-Win Picture Distorted

At present China-U.S.trade relations are in a state of confusion.Although both countries have gained tremendous benefits from the bilateral trade relationship,some Americans have intentionally distorted some basic facts regarding China-U.S.trade relations. Based on an analysis of some official and nonofficial research reports published in the United States,this article holds that the China-U.S.trade imbalance is the symptom of a bigger issue stemming from the contradiction between the United States as the world's sole superpower and China as an emerging power.Economic globalisation came about due to the needs of western developed countries represented by the United States to boost economic development.Only by seizing the opportunities of economic globalisation, has China gained strong economic growth. Such a development is changing the world political,economic,military and cultural landscape that have been shaped since the post-cold-war era,and has to some extent raised doubt or suspicion on the part of the United States and its western allies.This is a manifestation of how unprepared some people in the United States and other western countries are in the face of China's rapid development and rising status.So,their immediate reaction has been to seek protection for themselves,and try their utmost to prevent China's rapid growth from impacting on the international framework and their vested interests.

Trumponomics and China-US Economic and Trade Relations

Since he took office, the new US president, Donald Trump, has unveiled his broad economic policy--now called Trumponomics. It emphasizes neoliberalism at home, less government regulations, more growth and weakening the welfare state. Intemationally, Trumponomics embraces protectionism and nativism with a focus on US economic interests. Trumponomics caters to the lower-middle classes, a reflection of the country＇s current economic and diplomatic challenges. Trumponomics will bring uncertainty to China-US economic and trade relations. China should carefully study the policies of the Trump administration and prepare contingency plans.

A Review of China-US Economic and Trade Relations (2007-2015)

In order to find indications for future bilateral relations, it is worth reviewing the development of China-US economic and trade relations in recent history. Generally speaking, the nine years between 2007 and 2015 saw non-stop progress in China and US trade and economic ties. The China-US interdependent and complementary economic and trade connections ensure that bilateral relations are constantly developing and merging following their interdependent paths;the global challenges, such as the financial crisis and recent extreme weather events, have allowed China and the US to be in the same boat,weathering these different forms of turbulence. Decisions on important domestic policies and disputes can now be discussed earlier and effectively following on from the construction of multi-dimensional crisis management mechanisms. But undeniably there are unsettled and conflicting points in their relations, such as the fact that the US strategically excludes China from its free trade agenda, not willing to accept many everyday items manufactured by China. This is a major obstacle preventing their relationships deepening. History tells us, in future, if both sides could have a bigger vision, relations would better develop, for the new type of major power relations and the subsequent road would be less rocky and bring more benefits for the peoples of both countries.

A New Model of China-US Big Power Relations： A Symbolic Sign in Foreign Affairs

To cope with the current crisis and tensions full-filled China-US relationship, Chinese President Xi Jinping put forward the concept of building a new model of China-US big power relations, which the US agrees. Yet the new model won a heated discussion. In China this new model was evaluated positively and optimistically, while in the US it was perceived as a strategic challenge or even a threat. In the present article, the author proposes that this new model of China-US big power relations is more like a symbolic sign in foreign affairs rather than a strategic challenge or a threat or an effective and workable mechanism at this moment, and meanwhile analyses this view from diachronic and semiotic perspectives. The analyses reveal that the new model functions as a symbolic sign, signifying to the world that conceptually the two big powers have a good and harmonious relationship.

Global Cyberspace Governance: State Actors and the China-US Cyber Relationship

The rising role of state actors,in particular cyber powers in cyberspace governance,has become a promine nt feature of the governance process.All countries begin to take more proactive measures,in terms of building cyber capacities,and getting more involved in global cyberspace governance.This process will be determined upon the interactions of China and the US to be framed within the laws and regulations of global cyberspace governance.

TWO PAIRS OF STRUCTURAL CONTRADICTIONS IN CHINA-US-LATIN AMERICA RELATIONS： HOW TO VIEW THEM

Before his multi-stop visit to Mexico, Argentina, Peru, Colombia and Jamaica in Latin America and the Caribbean （LAC） early February 2018, then U.S. Secretary of State Rex Tillerson released many signals for Latin America. Especially in his remarks at the University of Texas at Austin, he portrayed the presence of China and Russia in LAC as a ＂new imperial power＂ and called on nations of Latin America and the Caribbean to review and reassess China-LAC relations. By identifying China and Russia as critical reference variables for future U.S.- Latin America relations, he obviously went beyond the bilateral level of U.S.- Latin relations and implied the important changes in U.S. policy toward LAC that pressured by growing influence of extra-regional actors in LAC, the United States might strengthen its diplomatic efforts in LAC to maintain and consolidate its dominance in the region.