Article
Astronomy & Astrophysics
R. G. Cionco, S. M. Kudryavtsev, W. W-H Soon
Summary: This study examines the periodic changes in Earth's orbital movement and provides a new explanation for possible variations in solar activity caused by planets. The results suggest that the Earth's movement in space has an impact on the way solar radiant flux reaches the planet.
EARTH AND SPACE SCIENCE
(2021)
Article
Green & Sustainable Science & Technology
Sepideh Moshrefi, Sami Kara, Michael Hauschild
Summary: The irreversible impacts of human activities have led to the establishment of planetary boundaries and Science-Based Targets (SBTs) for companies to reduce greenhouse gas emissions. Life Cycle Assessment (LCA) is used as a decision-making tool to integrate environmental impacts in planning. This paper aims to develop a framework for future-oriented Environmental Impact assessment of companies towards operationalisation of SBTs
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Engineering, Mechanical
Xinbin Li, Jing Liu, Jin Xu, Yan Chen, Zeng Hu, Guang Pan
Summary: This study proposes a time-varying wear model for planetary bearings in a double planetary gear set, which helps to analyze the performance degradation of the gear set. The dynamic model incorporates the time-varying behavior of sliding speeds and contact forces, as well as bearing and gear excitations. The results show that the wear of the inner ring of the planetary bearing is more severe than the outer ring, and it affects the dynamics of rollers, carriers, planet gears, and cages.
NONLINEAR DYNAMICS
(2023)
Article
Astronomy & Astrophysics
Elliot M. Lynch, Joshua B. Lovell
Summary: This study demonstrates that the morphology and surface brightness distributions of face-on eccentric debris discs are strongly influenced by their eccentricity profile. Different wavelengths can result in different glowing effects, either at apocentre or pericentre. The classical approach of interpreting eccentric debris discs using line densities is only valid under limited circumstances.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2022)
Article
Geography, Physical
Niklas Wehmann, Christoph Lenting, Sandro Jahn
Summary: Calcium sulfates, such as gypsum, play important roles in industrial processes and the global sulfur cycle. Understanding the formation and transformation processes of calcium sulfate minerals, especially the reaction from gypsum to anhydrite, is still limited. Recent research suggests the significance of solution flow in facilitating anhydrite precipitation, but it is not the sole catalyst.
GLOBAL AND PLANETARY CHANGE
(2023)
Article
Astronomy & Astrophysics
Pavlo Pinchuk, Jean-Luc Margot
Summary: The study introduces a direction-of-origin filter based on convolutional neural networks for radio frequency interference (RFI) mitigation, which outperforms traditional 2D correlation models and existing filters in performance, significantly reducing the number of signals requiring visual inspection.
ASTRONOMICAL JOURNAL
(2022)
Article
Astronomy & Astrophysics
Jose A. Benavides, Laura Sales, Mario G. Abadi, Federico Marinacci, Mark Vogelsberger, Lars Hernquist
Summary: We study the formation of ultradiffuse galaxies (UDGs) using the TNG50 simulation, and define UDGs as dwarf galaxies in the stellar mass range 7.5 <= log(M-star/ M-circle dot) <= 9 that fall within the 5% most extended tail of the simulated mass-size relation. The TNG50 simulation predicts that UDGs are preferentially found in high spin and more massive haloes compared to non-UDG dwarfs, while a small subset of satellite UDGs can experience size increase due to tidal effects.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2023)
Article
Computer Science, Interdisciplinary Applications
Xinghua Huang, Guanqiu Qi, Neal Mazur, Yi Chai
Summary: In this paper, a deep residual networks-based intelligent fault diagnosis method for planetary gearboxes in cloud environments is proposed. By utilizing the super computing power of cloud computing and selecting appropriate wavelet basis functions, the proposed method achieves high diagnostic accuracy. Experimental results demonstrate the effectiveness of the proposed method.
SIMULATION MODELLING PRACTICE AND THEORY
(2022)
Article
Biochemistry & Molecular Biology
Liu Mei, Katarzyna M. Kedziora, Eun-Ah Song, Jeremy E. Purvis, Jeanette Gowen Cook
Summary: In this study, the authors quantified the dynamics and distribution of DNA replication origin licensing for the first time. They found that the loading rate of MCM complexes is different between euchromatin and heterochromatin. The study also revealed the consequences of heterochromatin licensing dynamics, leading to DNA damage accumulation in subsequent phases. Therefore, the length of G1 phase is critical for sufficient MCM loading, genome duplication, and genome stability.
NUCLEIC ACIDS RESEARCH
(2022)
Article
Environmental Sciences
Can Wang, Chensheng Cheng, Dianyu Yang, Guang Pan, Feihu Zhang
Summary: This article proposes a solution to the problem of accumulating and drifting navigation errors faced by autonomous underwater vehicles (AUVs) during underwater missions. The proposed method utilizes error models and acoustic calibration to minimize navigation errors and maintain stealth. By optimizing the positions of acoustic markers based on accumulated sensor errors, better communication with AUVs and higher coverage are achieved.
FRONTIERS IN MARINE SCIENCE
(2023)
Article
Environmental Sciences
Ying Liu, Xiaomin Zhang, Jianguo Tan, Peter Grathwohl, Rainer Lohmann
Summary: The atmospheric deposition of PAHs onto soil in Shanghai and its surrounding areas poses a threat to terrestrial ecosystem. A total of 139 atmospheric bulk deposition samples were collected to locate the potential source areas using a multisite joint location method. The identified source areas were confirmed by PM and SO2 data from national ground monitoring stations.
ENVIRONMENTAL POLLUTION
(2022)
Article
Engineering, Mechanical
Aijun Hu, Suixian Liu, Ling Xiang, Yue Zhang
Summary: This paper proposes a dynamic model for multi-stage planetary gear system with crack fault and analyzes the dynamic responses of the system using various analysis methods. The results show that the crack fault has a significant impact on the system's dynamic characteristics and may lead to chaotic motion.
ENGINEERING FAILURE ANALYSIS
(2022)
Article
Engineering, Civil
Xinghao Lu, Haiyan Zhao, Bingzhao Gao, Weixuan Chen, Hong Chen
Summary: This paper proposes a hierarchical processing method for autonomous vehicles' decision-making in complex urban scenarios, which extracts traffic law information and traffic participant information to construct a candidate behavior set and selects the optimal driving behavior. The effectiveness of the method is verified through driving task simulation.
IEEE TRANSACTIONS ON INTELLIGENT TRANSPORTATION SYSTEMS
(2022)
Article
Astronomy & Astrophysics
Gabriel Nathan, David C. Rubie, Seth A. Jacobson
Summary: This study investigates the formation and composition of Earth and Mars, as well as the oxidation gradient in Grand Tack simulations. It finds that the oxidation gradient cannot simultaneously reproduce the mantle compositions of Earth and Mars. To reconcile this, it suggests that Mars must have formed beyond 1.0 astronomical units to match the FeO-rich composition of its mantle.
Article
Multidisciplinary Sciences
Jon Wade, David J. Byrne, Chris J. Ballentine, Hal Drakesmith
Summary: This article discusses the important role of iron in the formation of planetary biospheres, planetary habitability, and the process of biological evolution. Changes in iron solubility caused by the increase in atmospheric oxygen after the Great Oxygenation Event have had an impact on biological evolution, making organisms more efficiently utilize this scarce but vital nutrient.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2021)
