Article
Business
Ping Zhang, Yezhou Sha, Yifan Xu
Summary: The study on the spillover effects between BRIC and G7 from 2009 to 2020 reveals that G7 is the exporter of risk while BRIC is the receiver of risk. The net spillover of G7 is higher than that of BRIC in both static and dynamic spillover analysis, with G7 also exhibiting higher volatility spillover to other markets compared to BRIC.
EMERGING MARKETS FINANCE AND TRADE
(2021)
Article
Economics
Elena Fernandez-Rodriguez, Roberto Garcia-Fernandez, Antonio Martinez-Arias
Summary: This paper explores the relationship between the corporate effective tax rate (ETR) and various institutional factors in the G7 and BRIC countries. Panel data methodology is employed with a sample of 25,878 listed firms from 2010 to 2018. The findings indicate that all analyzed variables have an impact on the ETR. Certain factors, such as statutory tax rate, government effectiveness, regulatory quality, rule of law, and open markets, affect all countries, while others like corruption control and economic freedom only affect the BRIC countries, and GDP growth, deficit, and gross debt only affect the G7 countries.
Article
Multidisciplinary Sciences
Samuel Kwaku Agyei, Peterson Owusu Junior, Ahmed Bossman, Emmanuel Asafo-Adjei, Oliver Asiamah, Anokye Mohammed Adam
Summary: This study examines the time-frequency spillovers, contagion, and pairwise interrelations between the BRIC index and its constituents, as well as between BRIC and G7 economies. The findings reveal significant interdependencies in the short-term between BRIC and G7, with France, Germany, and the UK having the greatest impact on BRIC markets. Contagious spillovers are identified between BRIC and G7 economies across all time scales in 2017 and 2019. Additionally, there is strong net-pairwise spillover connectivity within the BRIC index, with BRIC countries transmitting net-pairwise spillovers to G7 markets, excluding Japan. The study suggests portfolio diversification using BRIC and G7 stocks in the intermediate-to-long-term horizon and emphasizes the importance of considering unique market shocks when distributing assets.
Article
Environmental Sciences
Khalid Khan, Chi Wei Su
Summary: This study evaluates the impact of economic policy uncertainty (EPU) on renewable energy (RE) in the G7 countries. The findings suggest that EPU negatively affects RE across all quantiles, with high EPU having a rapid influence on RE. The effects of EPU on RE vary across countries, with decreasing impact in Germany and increasing impact in Italy, Japan, the UK, and the USA in the long run. It is important to ensure greater economic stability for the sustainable development of RE, and this can be achieved through involving all stakeholders in policy-making and sharing complete information about economic policies.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Environmental Studies
Yi Song, Jinhua Cheng, Yijun Zhang, Tao Dai, Jianbai Huang
Summary: Heterogeneous technical change has different effects on metal consumption intensity, with iron ore consumption intensity mainly affected by magnitude of technical change and copper/aluminum consumption intensity mainly affected by biased technical change. The effects of technical change on metal consumption intensity are mediated by industrial structure and metal consumption, and differ between G7 and BRICS countries.
Article
Environmental Studies
Ikram Jebabli, Amine Lahiani, Salma Mefteh-Wali
Summary: Motivated by COP26, this study examines the interplay between CO2 emissions and economic growth in G7 countries. Using the quantile-vector autoregression approach, we analyze 202 years of data from 1820Q1 to 2021Q4 to explore the distributional asymmetric interdependence between emissions and growth. Our findings demonstrate that the dependence structure is mainly asymmetric and time-varying, with differences in the dynamics of CO2 emissions and growth among the G7 countries.
Article
Business, Finance
Zaghum Umar, Yasir Riaz, David Y. Aharon
Summary: Our study examines the connectedness between the sovereign bond yield curve components of the Group of Seven (G7) countries. Using the framework of Nelson and Siegel, we are able to track their connectedness over the long, medium and short-term horizons. The results show increased connectedness in the long-term, with three distinct phases of connectedness over time.
INTERNATIONAL REVIEW OF ECONOMICS & FINANCE
(2022)
Article
Thermodynamics
Yaoqi Guo, Chenxi Yu, Hongwei Zhang, Hui Cheng
Summary: This study examines the dynamic relationship between oil prices and renewable energy consumption, finding significant heterogeneity between countries and asymmetric effects of oil price changes on renewable energy consumption.
Article
Environmental Studies
Bing Meng, Kunkun Xue, Miaoyi Han
Summary: Natural resources are important for economic growth, job creation, and improving people's quality of life worldwide. However, many resource-rich countries have failed to fully exploit the benefits of their resources. This study finds that natural resource rent has a negative effect on economic growth in low-income countries, but a positive effect in high-income countries. Digitalization benefits the overall economy at all levels, while the initial stages of globalization are characterized by slower economic growth. Finally, there is an inverse relationship between financial risk and economic development.
Article
Green & Sustainable Science & Technology
D. J. Borozan
Summary: This paper examines the impact of policy-induced uncertainty on renewable energy consumption and finds that uncertainty has a long-term asymmetric effect, with both negative and positive shocks reducing renewable energy consumption. The short-term effect of uncertainty is significant but not asymmetric, and the effects of other variables are insignificant in the short term.
Article
Business, Finance
Yang Wan, Shi He
Summary: This paper focuses on the dynamic connectedness of the five currencies used in G7 since 1983 in daily frequency measured by a Bayesian time-varying approach. The total connectedness of the system varies dramatically over time, and changes are related to economic or financial events. The US dollar is always a transmitter, while the Euro is a powerful competitor.
FINANCE RESEARCH LETTERS
(2021)
Article
Economics
Seefat-E-Rabbi Khan, Dimitrios Asteriou, Claudia Jefferies
Summary: This paper aims to explain the growth disparity between the BRIC countries (Brazil, Russia, India, and China) and the non-BRIC countries. The findings suggest that foreign direct investments, gross capital formation, human capital, and infrastructure play significant roles in economic growth, with their effectiveness being more pronounced in the BRIC countries. The relative significance of foreign direct investments also depends on the presence of better-quality human capital and higher levels of domestic investments in the BRIC countries, thus explaining the growth disparities.
ECONOMIC MODELLING
(2023)
Article
Economics
Yi Fang, Zhongbo Jing, Yukun Shi, Yang Zhao
Summary: With the increasing openness of the Chinese economy, Chinese financial markets are becoming more integrated with those in developed markets. The study found that financial spillovers have a significant impact on bond, stock, and foreign exchange markets, and Chinese markets are increasingly influencing global financial markets. Additionally, spillovers from the G7 to China exceed spillbacks, indicating that Chinese markets are more affected by G7 economies than vice versa, with economic policy uncertainty being a key driver of cross-border financial spillovers.
ECONOMIC MODELLING
(2021)
Article
Green & Sustainable Science & Technology
Kyle S. Herman, Jun Xiang
Summary: The innovation of environmental technologies in newly industrializing countries (NICs) is crucial for addressing climate change. However, multilateral climate change policies primarily focus on technology transfer rather than collaboration and co-invention.
ENERGY FOR SUSTAINABLE DEVELOPMENT
(2022)
Article
Environmental Studies
Tolassa Temesgen Hordofa, Song Liying, Nafeesa Mughal, Asma Arif, Hieu Minh Vu, Prabjot Kaur
Summary: This study evaluates the impact of natural resources rents on the economic performance of G7 economies and finds that the COVID-19 pandemic led to economic decline, while natural resources rents, including oil and gas, help improve economic performance. It suggests strengthening stabilization policies and encouraging active participation from G7 countries.
Article
Engineering, Aerospace
Lixin Wang, Chang Lu, Hailiang Liu, Ting Yue
Summary: The study establishes new modules to construct a time-varying pilot model, quantitatively evaluates pilot-induced oscillation characteristics, and establishes a method for predicting nonlinear pilot-induced oscillations based on digital virtual flight.
AEROSPACE SCIENCE AND TECHNOLOGY
(2021)
Article
Immunology
Shuhang Li, Linlin Wang, Zhihao Xu, Yuanyuan Huang, Rufeng Xue, Ting Yue, Linfeng Xu, Fanwu Gong, Shiyu Bai, Qielan Wu, Jiwei Liu, Bolong Lin, Huimin Zhang, Yanhong Xue, Pingyong Xu, Junjie Hou, Xiaofei Yang, Tengchuan Jin, Rongbin Zhou, Jizhong Lou, Tao Xu, Li Bai
Summary: The activation of NLRP3 inflammasome in macrophages is governed by GSTO1-promoted ASC deglutathionylation. Glutathionylation of ASC inhibits the activation of NLRP3 inflammasome, and mice expressing AscC171A show NLRP3-dependent hyperinflammation. The results demonstrate that glutathionylation of ASC represses NLRP3 inflammasome activation and GSTO1-promoted ASC deglutathionylation at ER is a metabolic checkpoint for activating NLRP3 inflammasome.
JOURNAL OF EXPERIMENTAL MEDICINE
(2021)
Article
Engineering, Aerospace
Lixin Wang, Ning Zhang, Hailiang Liu, Ting Yue
Summary: This paper investigates the static and dynamic stability characteristics of a blended-wing-body (BWB) aircraft with podded engines, analyzes the different airworthiness requirements and changes compared to conventional aircraft, and provides valuable references for configuration design, flight control law design, and airworthiness evaluation.
CHINESE JOURNAL OF AERONAUTICS
(2022)
Article
Engineering, Aerospace
Ting Yue, Xianshuai Zuo, Lixin Wang, Jianzhong Geng, Hong Zhang
Summary: In this article, the similarity relations of flight control law parameters between scaled-model and full-size aircraft are studied. The general similarity relations applicable to commonly used flight control law configurations and feedback signals are derived and analyzed. The simulation results of a fighter aircraft and its scaled model validate the proposed similarity relation conclusions.
IEEE TRANSACTIONS ON AEROSPACE AND ELECTRONIC SYSTEMS
(2022)
Article
Engineering, Multidisciplinary
Wang LiXin, Lu Chang, Zhao Peng, Liu HaiLiang, Yue Ting
Summary: The study focused on the impact of wind field on the PDR task and found that the pilot's multi-axis control behavior can be decoupled. By designing three modules, the pilot's visual perception and stick manipulation allocation behavior were simulated. The established flight task simulation model proposed evaluation indicators for the receiver's flight performance.
SCIENCE CHINA-TECHNOLOGICAL SCIENCES
(2022)
Article
Engineering, Aerospace
Lixin Wang, Kun Yang, Ting Yue, Hailiang Liu
Summary: Compared with static wavy ground tests and moving flat ground tests, the moving wavy ground test eliminates the influence of the boundary layer and generates more accurate aerodynamic test results in a wave environment. The test indicates that longitudinal aerodynamics is affected not only by wave height but also by wave height change rate, while lateral and directional aerodynamic characteristics are less affected by the ground effect.
AEROSPACE SCIENCE AND TECHNOLOGY
(2022)
Article
Engineering, Aerospace
Lixin Wang, Kun Yang, Hailiang Liu, Ting Yue
Summary: This paper presents a command governor design for attitude angle protection of a wing-in-ground (WIG) effect craft, and utilizes a state estimator to address unmeasured disturbances and noise. The effectiveness of the design is verified through simulations.
JOURNAL OF AEROSPACE ENGINEERING
(2022)
Article
Engineering, Multidisciplinary
LiXin Wang, SiZhuang Zheng, Peng Zhao, HaiLiang Liu, Ting Yue
Summary: This study proposes a variable-weighted multiple-model predictive control algorithm to enhance the performance of icing tolerance envelope protection system. The algorithm takes into account icing conditions and flight parameters, and introduces variable-weighted rules to ensure system stability. A design approach involving a variable-weighted function is developed, and simulations demonstrate the effectiveness of the proposed method in improving system performance.
SCIENCE CHINA-TECHNOLOGICAL SCIENCES
(2023)
Article
Immunology
Shiyu Bai, Qielan Wu, Shasha Zhu, Yuwei Zhang, Xuran Chen, Miya Su, Jun Pan, Shuhang Li, Ting Yue, Linfeng Xu, Di Xie, Chenxi Tian, Dan Zhao, Xiang Li, Junjie Hou, Lu Wang, Sicheng Fu, Yanhong Xue, Amin Jiang, Dong Li, Tao Xu, Zhigang Tian, Rongbin Zhou, Huimin Zhang, Li Bai
Summary: The overexpression of Vam6 in intratumoral iNKT cells impairs mTORC1 activation and IFN-gamma production. By regulating Vam6 expression, the activation of mTORC1 in intratumoral iNKT cells can be enhanced, thereby improving their anti-tumor efficacy. Therefore, Vam6 may serve as a target for iNKT cell-based immunotherapy.
FRONTIERS IN IMMUNOLOGY
(2023)
Article
Engineering, Aerospace
Shang Tai, Lixin Wang, Yanling Wang, Chen Bu, Ting Yue
Summary: This paper introduces a new four-degree-of-freedom wind tunnel virtual flight test device, which can achieve partially constrained dynamic motion of the model in the wind tunnel by manipulating the control surface deflection. Compared with the 3-DOF wind tunnel virtual flight test, the model adds vertical motion to simulate free flight more realistically. The paper establishes the nonlinear flight dynamics model of 4-DOF wind tunnel virtual flight test, analyzes the differences in dynamics characteristics between it and free flight, and derives the identification model of aerodynamic derivatives based on the test.
Article
Engineering, Aerospace
Shang Tai, Lixin Wang, Yanling Wang, Chen Bu, Ting Yue, Hailiang Liu
Summary: This paper studies the longitudinal and lateral-directional dynamic characteristics of virtual flight in a three-degree-of-freedom virtual flight test. The differences in dynamics between the scaled model and free flight are analyzed. The scaling ratio of the model affects the design methods of flight control law. The similarity relation of control law parameters between full-size aircraft and scaled models is studied to establish a control law design method for virtual flight testing.
JOURNAL OF AEROSPACE ENGINEERING
(2023)
Article
Engineering, Aerospace
Shang Tai, Lixin Wang, Yanling Wang, Shiguang Lu, Chen Bu, Ting Yue
Summary: In the early stages of aircraft design, a scaled model is used in a wind tunnel for semi-free flight to obtain test data and identify aerodynamic parameters. However, the absence of translational motion in the test model affects its flight dynamics, requiring investigation. To address this, a 3-DOF wind tunnel virtual flight test device is developed. Flight dynamics equations are established and the differences between wind tunnel virtual flight and free flight are analyzed for aerodynamic parameter identification. The proposed method shows high accuracy in identifying parameters for a blended wing body aircraft.
Article
Engineering, Aerospace
Lixin Wang, Rong Zhao, Ke Xu, Yi Zhang, Ting Yue
Summary: The stall aerodynamic model based on Kirchhoff's theory has two defects: it cannot be combined with the pre-stall model, and it cannot accurately describe the aircraft stall pitching moment characteristics. To address these issues, this paper proposes a method to determine unknown parameters and adds correction terms to the pitching moment model. The developed aerodynamic model accurately describes the longitudinal quasi-steady stall aerodynamic characteristics of aircraft under different stall degrees, as validated by simulation results.
Article
Engineering, Aerospace
Lixin Wang, Shang Tai, Ting Yue, Hailiang Liu, Yanling Wang, Chen Bu
Summary: The wind tunnel virtual flight test allows the model to perform dynamic semi-free flight in the wind tunnel through control surface deflections, and identifies aerodynamic derivatives using test data. Differences in dynamics between wind tunnel virtual flight and free flight lead to discrepancies between identification and theoretical results. To address these issues, a step-by-step identification and correction method is proposed to identify and correct lift, drag derivatives, pitch moment derivatives, and velocity derivatives based on the difference between the equations of motion in wind tunnel virtual flight and free flight.
Article
Engineering, Aerospace
Lixin Wang, Kun Yang, Peng Zhao, Ting Yue
Summary: This paper proposes a method for determining aircraft configuration parameter boundaries based on closed-loop flying qualities requirements. By decoupling control law gains from configuration parameters and establishing a flying qualities evaluation scheme, the method aims to determine parameter boundaries that meet Level 1 flying qualities requirements. The proposed method is verified through an application example involving a sample aircraft's design ranges.
