Modulated waveforms for harmonic minimization of far-field signals in amplitude-modulated heating of the ionosphere by ZhiJian Lu, Yong Li, Hui Li, Jian Wu, JingFeng Yao, XingBao Lyu, ChengXun Yuan, ZhongXiang Zhou, Ying Wang

“…This paper establishes an amplitude modulation heating model, simulating the far-field radiation of ELF/VLF signals generated by modulation heating, as well as the specific location and longitudinal extent of the radiation source. We consider various modulation waveforms and find that square-wave modulation has the highest excitation efficiency for ELF/VLF signals, and that square-wave modulation with a smaller duty cycle (<50%) exhibits higher excitation efficiency for ELF/VLF signals, while the sin²t waveform modulation yields the lowest proportion of harmonic energy in the generated signals. …”
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Audio recognition method of belt conveyor roller fault based on convolutional neural network and linear regression by Xiangyuan CHEN, Wei QIN, Yanchi LIU, Minghua LUO

“…Secondly, using the voiceprint spectrum separation technology, the HPSS (Harmonic Percussive Source Separation) method is used to separate the harmonic and shock wave components to enhance the sound signal characteristics of the roller fault. …”
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Energy resilience enhancement against grid outages for a zero-emission hotel building via optimal energy management of onshore and offshore energy storages by Haojie Luo, Sunliang Cao

“…Scenario-based analyses demonstrate that coordinated activation of sources outperforms single-source strategies. Coordinated control increased the flexibility index to 192.67% (1.93 times incentives), reducing costs to 80.66%; prioritisation further boosted flexibility to 199.89% and lowered costs to 79.52%. …”
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Northward propagation of Hadley Cell in the South Asian monsoon region driven by active convection over the Qinghai–Tibet Plateau triggered by sea surface temperature warming of th... by Wenyue Cai, Xiangde Xu, Yanju Liu, Yaoming Ma, Chunzhu Wang, Runze Zhao, Chan Sun, Na Dong, Ruibo Wang

“…This interaction mechanism stresses the “hub” effect of the QTP in the atmospheric energy and water cycle of the low- to mid–high latitude systems during the convergence of westerly and monsoon winds. The Rossby source, also famous as the “oscillation source,” formed in the upper troposphere by the SST variations in the high-impact area of the North Atlantic, is an essential “thermal driving source” for the interannual shifts in convection over the QTP. …”
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Study on the photoacoustic spectroscopy measurement of methane with different laser bias DC waveforms by Li Mengqi, Li Mengqi, Chen Zhengguang, Wang Jie, Qin Haohao, Zhou Zhenqin, Huang Siqi, Wang Qiaohua

“…By constructing an experimental platform, the intensity, linearity, and stability of photoacoustic signals under different bias DC waveforms (sawtooth wave, triangle wave, and sine wave) were compared and analyzed. …”
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Key technologies of earthquake early warning system for China’s high-speed railway by Geming Zhang, Lin Yang, Wenxiang Jiang

“…Design/methodology/approach – The paper describes the key technologies that are involved in the development of the system, such as P-wave identification and earthquake early-warning, multi-source seismic information fusion and earthquake emergency treatment technologies. …”
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Distinct Impacts of the Central and Eastern Atlantic Niño on West Antarctic Sea Ice by Baiyang Chen, Chunzai Wang, Lei Zhang, Hanjie Fan

“…In contrast, the EAN only excites one atmospheric wave train over the South Pacific through an indirect pathway, due to its associated weaker local Hadley circulation, which fails to establish a significant Rossby wave source in the subtropical South Atlantic. …”
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Preconditioned Conjugate Gradient Algorithm-Based 2D Waveform Inversion for Shallow-Surface Site Characterization by Jianbo Guan, Yu Li, Guohua Liu

“…The full-waveform inversion (FWI) of a Love wave has become a powerful tool for shallow-surface site characterization. …”
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Field of a directional low-frequency acoustic emitter in the boundary layer of the atmosphere by Irina V. Semenova, Anastasia A. Korneeva

“…Due to the fact that many wave emitters that a person is able to perceive belong to low-frequency ones, studies of sound fields created by such emitters are relevant. …”
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The Multi‐Segment Complexity of the 2024 MW ${M}_{W}$ 7.5 Noto Peninsula Earthquake Governs Tsunami Generation by Fabian Kutschera, Zhe Jia, Bar Oryan, Jeremy Wing Ching Wong, Wenyuan Fan, Alice‐Agnes Gabriel

“…The simulations can explain tsunami wave amplitude, timing, and polarity of the leading wave, which are crucial for tsunami early warning. …”
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Construction and application of foundational models for intelligent processing of microseismic events in mines by Anye CAO, Maotao LI, Xu YANG, Yao YANG, Sen LI, Yaoqi LIU, Changbin WANG

“…Experimental results demonstrate exceptional performance with 95.4% event detection accuracy, 96.6% of P-wave arrivals and 65.5% of S-wave arrivals exhibiting errors within 50 ms, and 93.38% accuracy in polarity determination, satisfying real-time processing requirements. …”
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Spatiotemporal energy‐density distribution of time‐reversed electromagnetic fields by Elias Le Boudec, Hamidreza Karami, Nicolas Mora, Farhad Rachidi, Marcos Rubinstein, Felix Vega

“…Abstract Time reversal exploits the invariance of electromagnetic wave propagation in reciprocal and lossless media to localize radiating sources. …”
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Coral Reef Conservation Strategies for Everyone by Kathryn E. Lohr, Joshua T. Patterson

“…About 400 million people rely on coral reef fish as a source of protein; about 6 million people make a living by catching and selling coral reef fish and invertebrates; tourism activities like SCUBA diving and snorkeling provide revenue of US $9.6 billion per year; and reefs reduce wave energy by 97%, helping to protect 197 million people in coastal areas from beach erosion, wave energy, and flooding. …”
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Coral Reef Conservation Strategies for Everyone by Kathryn E. Lohr, Joshua T. Patterson

“…About 400 million people rely on coral reef fish as a source of protein; about 6 million people make a living by catching and selling coral reef fish and invertebrates; tourism activities like SCUBA diving and snorkeling provide revenue of US $9.6 billion per year; and reefs reduce wave energy by 97%, helping to protect 197 million people in coastal areas from beach erosion, wave energy, and flooding. …”
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Seismic observation using distributed acoustic sensing around the Tsugaru Strait at the Japan and Kuril Trenches, northeastern Japan by Satoru Baba, Eiichiro Araki, Takashi Yokobiki, Kei Kawamata, Keisuke Uchiyama, Takuji Yoshizuka

“…Abstract As megathrust earthquakes often have source areas in offshore regions, offshore seismic observations are important. …”
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Blast Pressure Simulation of a Suicide Vest Attack by Assal Hussein, Paul Heyliger

“…However, blast walls attenuated blast wave energy and peak-overpressure dropped by 53% at a distance 1.5h behind the walls. …”
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Three PWM based Control Technics for Switched Boost Inverter by Elshan Davaranhagh, Ebrahim Babaei, Mehran Sabahi, Sima Shahmohamadi

“…Switched Boost Inverter (SBI) operates in buck-boost mode with an extensive spectrum of output voltage obtainable from a specific source voltage. Also, this structure provides superior protection against Electromagnetic Wave Interference (EMI) juxtaposed with the traditional impedance source inverter. …”
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Meteorological regime of the Sygyktinsky Glacier (the Kodar Ridge) during the ablation period by E. Y. Osipov, O. P. Osipova, O. V. Vasilenko

“…On days with summer snowfalls, the increase in albedo reduces the short-wave balance by 2.5 times. Explicit and latent heat fluxes are the secondary sources of melting energy, while heat loss takes place mainly due to effective long-wave radiation (–15 W/m2). …”
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Equivalent Surface Impedance of Slot Impedance Load Based on Aperture in Parallel-Plate Dielectric-Coated Waveguide Wall as Part of Infinite Array by V. G. Koshkidko, O. V. Alpatova

“…In this area the primary field is excited by the plane wave. The area does not contain any excitation sources and consists of dielectric layer of t thickness located between the planes and The area does not contain any excitation sources either and is bounded by parallel-plate waveguide walls with the distance b between them. …”
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The 2 March 2016 Wharton Basin Mw 7.8 earthquake: High stress drop north‐south strike‐slip rupture in the diffuse oceanic deformation zone between the Indian and Australian Plates... by Thorne Lay, Lingling Ye, Charles J. Ammon, Audrey Dunham, Keith D. Koper

“…Despite the large magnitude, only minor source finiteness is evident in aftershock locations or resolvable from seismic wave processing including high‐frequency P wave backprojections and Love wave directivity analysis. …”
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