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Articles 69571 - 69600 of 302474

Full-Text Articles in Physical Sciences and Mathematics

Study On Combat Effectiveness Prediction Model Using Elman Feedback Network, Xiaoxi Li, Haoguang Chen, Daxi Li, Jiangping Chen Sep 2020

Study On Combat Effectiveness Prediction Model Using Elman Feedback Network, Xiaoxi Li, Haoguang Chen, Daxi Li, Jiangping Chen

Journal of System Simulation

Abstract: To deal with combat effectiveness prediction of the military system, a SVR-based crucial evaluation indexes mining method was carefully investigated. The key indexes in the effectiveness evaluation were found by comparing partial derivatives. The model of efficiency prediction based on Elman neural networks, which used effective optimized indexs and values as input and output, was exerted to combat effectiveness prediction of C4ISR. The results show that the method can reduce the complexity of prediction model, and avoid uncertain factors existing in system, which provide effective technical support for the combat effectiveness prediction scientifically.

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Research Progress On War Complex System Of Systems Modeling Based On Complex Network, Ma Li, Mingzhi Zhang Sep 2020

Research Progress On War Complex System Of Systems Modeling Based On Complex Network, Ma Li, Mingzhi Zhang

Journal of System Simulation

Abstract: The crucial issue of war complex system of systems (SoS) modeling is to represent the complex coupling and interaction among components of SoS based on networks. The complex network provides new means of SoS modeling. The Characteristics of complex network suitable to SoS modeling were introduced, and two kinds of general method for SOS modeling based on complex network were summed up. The research progress on operational SoS modeling was elaborated from the four aspects of networked description of SoS, modeling algorithm of SoS network, evaluation for SoS based on complex network and the combination of complex network and …

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Research On Interoperability Between Tena And Certain Command & Control System, Zhihua Dong, Yuanchang Zhu, Yanqiang Di, Xianguo Meng Sep 2020

Research On Interoperability Between Tena And Certain Command & Control System, Zhihua Dong, Yuanchang Zhu, Yanqiang Di, Xianguo Meng

Journal of System Simulation

Abstract: The heterogeneity prevents systems from the interoperability between C2 system and TENA for inter-connection in test community. Message Transfer Service contains End-to-End deployment mode and Cross-Network deployment mode, respectively there being two Inter-architecture with TENA system. Gateway can be designed to be single-threaded or multi-threaded. From the perspective of interoperability Gateway realizes the interoperability between communication protocols, object models and supporting services. Cooperation mechanism is designed to achieve the interoperability between the communication mechanism of pull mode in TENA and in C2P; meta-model of Message with OWL, and the object model interoperability is realized through model conversion; self-defined …

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Error Correction Methods In Numerical Simulation For Unilateral Constraint Dynamics, Haitao Gao, Yali Han, Youxiong Xu, Songqing Zhu, Zailuo Wu Sep 2020

Error Correction Methods In Numerical Simulation For Unilateral Constraint Dynamics, Haitao Gao, Yali Han, Youxiong Xu, Songqing Zhu, Zailuo Wu

Journal of System Simulation

Abstract: Aiming at problem of calculation errors and constraint violation in numerical simulation for dynamics of unilateral constraint such as contact and collision, the error projection correction methods were put forward. On the basis of dynamical behavior of unilateral constraint described by linear programming model, mixed linear complementarity dynamics was built. Numerical simulation methods for the mixed linear complementarity dynamics were derived. In order to reduce calculation error and constraint violation caused by this error in the numerical simulation, an error correction method was built for correcting position and velocity error of numerical solution on the base of bilateral …

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Improved Strategy To Reduce Common-Mode Voltage For Matrix Converter, Weizhang Song, Li Xi, Minyuan Li, Yanru Zhong Sep 2020

Improved Strategy To Reduce Common-Mode Voltage For Matrix Converter, Weizhang Song, Li Xi, Minyuan Li, Yanru Zhong

Journal of System Simulation

Abstract: Aiming at the large instantaneous common-mode voltage in traditional space vector modulation strategy for two-stage matrix converter (TSMC), on the basis of analyzing the laws of common-mode voltage, an improved modulation strategy to reduce common-mode voltage was proposed. To suppress common-mode voltage effectively, in this strategy, the rectification stage sector was subdivided into twelve sectors from six sectors, according to the sector of the reference current vector and dc-side voltage, the switching points of inverter stage were redefined and reallocated, and zero vector of inverter was selected and distributed reasonably, instantaneous maximum value of common-mode voltage was reduced to …

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Research On 3g Emergency Communication Network Simulation System Based On Performance Evaluation, Tang Hong, Yang Guang, Chuan Xu, Wenguang Tang Sep 2020

Research On 3g Emergency Communication Network Simulation System Based On Performance Evaluation, Tang Hong, Yang Guang, Chuan Xu, Wenguang Tang

Journal of System Simulation

Abstract: According to the application requirements of simulation evaluation about Emergency communication network performance when making emergency response plans and simulating exercises, the communication network simulation models were analyzed for 3G emergency communication systems. Then a simulation system of 3G emergency communication networks was designed and implemented with system-level dynamic simulation technology in order to perform the real-time simulation and provide the related performance parameters for network performance evaluation of 3G mobile emergency communication systems under different scenarios. Experiment results show that the system proves its high efficiency and validity.

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Man-Machine Coordinated Intelligent Flight Path Planning Algorithm, Ren Peng, Xiaoguang Gao Sep 2020

Man-Machine Coordinated Intelligent Flight Path Planning Algorithm, Ren Peng, Xiaoguang Gao

Journal of System Simulation

Abstract: Man-machine coordinated flight path planning of UAV low-altitude penetration is a key technology achieving manned and unmanned aerial vehicles cooperative combat. The algorithm of man-machine coordinated intelligent flight path planning was proposed, combining artificial auxiliary decision with novel intelligence algorithm, a chromosome integer code with changeable length based on angle was used to represent flight path. Human’s wisdom and experience could make up for the lack of intelligence algorithm. In the most dangerous environment, it made the best possible use of the human brain to guide solution procedures of the flight path planning on pop-up threats. A …

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Servo Load Simulator Based On Improved Wavelet Neural Network, Wang Chao, Rongzhong Liu, Yuanlong Hou, Gao Qiang, Wang Li Sep 2020

Servo Load Simulator Based On Improved Wavelet Neural Network, Wang Chao, Rongzhong Liu, Yuanlong Hou, Gao Qiang, Wang Li

Journal of System Simulation

Abstract: In order to prevent the surplus torque of servo load simulator which had influence in the performance of the torque load, an intelligent controller was put forward based on the improved self-learning functional expansion wavelet neural network. The Bang-Bang control is used when the error is big, and if the error is small, function expansion based on wavelet neural network and fuzzy compensation control is used; At the same time, the improved differential evolution algorithm is for estimating the parameters of the controller. Considering the computational complexity and performance of the control system, the number of hidden neurons …

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Modeling And Simulation For Target Tracking System Based On Dual-Pan-Tilt Camera, Kaishun Xiahou, Shanxing Chen, Yilin Wu Sep 2020

Modeling And Simulation For Target Tracking System Based On Dual-Pan-Tilt Camera, Kaishun Xiahou, Shanxing Chen, Yilin Wu

Journal of System Simulation

Abstract: Mathematical model of each component of target tracking system based on dual-pan-tilt camera was established. The rotation angles both in horizontal and vertical direction of each pan-tilt and the relative position of two cameras were adopted to estimate the real-time position of moving target with Extended Kalman Filter (EKF) tracking algorithm. A new real-time calibration method for pan-tilt camera was proposed to deal with the calibration problem that the external parameters of camera changes as the pan-tilt rotates in the process of camera modeling. In addition, the target’s image feature, extracted from the projected point on the camera image …

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Controller Design For Hypersonic Vehicle Based On Kalman Filter, Tao Chao, Jianliang Ai Sep 2020

Controller Design For Hypersonic Vehicle Based On Kalman Filter, Tao Chao, Jianliang Ai

Journal of System Simulation

Abstract: For a generic hypersonic vehicle with unstable longitudinal and lateral-directional mode, considering the three dimensional turbulence and their gradient, all states linear dynamic equations were established. All states H∞ feedback control was proposed based on the discrete Kalman filter when three dimensional turbulence and system measurement noise were taken into consideration. In this way, state estimation created by the Kalman filter to the H∞ controller was delivered. This method could guarantee the robustness when external atmospheric turbulence and itself parameter matrices perturbation caused by the flight condition variation existed. The results show that for both the nominal …

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Non-Uniform Axial Force Precise Modeling And Simulation Of Recycled Aggregate Concrete Confined By Steel Tube Column, Wenxian Feng, Yunchao Tang, Zhang Ye, Cai Yang, Dingjing Bao, Jinmu Hu Sep 2020

Non-Uniform Axial Force Precise Modeling And Simulation Of Recycled Aggregate Concrete Confined By Steel Tube Column, Wenxian Feng, Yunchao Tang, Zhang Ye, Cai Yang, Dingjing Bao, Jinmu Hu

Journal of System Simulation

Abstract: According to the complexity of non-uniform axial force on recycled aggregate concrete confined by steel tube column, precise modeling and simulation on non-uniform axial force were put forward, mechanic properties of axial force under uniform and non-uniform conditions were analyzed, and its three-dimensional model and force model were established. Then impact of load capacity was analyzed, such as geometric diameter, loading condition, and deformation during production. Force simulation and experimental results fit relatively well. It turned out that uniform axial load capacity was greater than concentrated eccentric axial load capacity. Besides, eccentric axial load capacity was related to eccentricity. …

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Embedded Power Optimization Method Based On User Behavior, Wang Hai, Gao Ling, Dongqi Chen, Ren Jie Sep 2020

Embedded Power Optimization Method Based On User Behavior, Wang Hai, Gao Ling, Dongqi Chen, Ren Jie

Journal of System Simulation

Abstract: In recent years, with the rapid development of embedded device represented by mobile phone and tablet computer, low power technology has been one of the hotspots in the embedded research field. Because the battery capacity of embedded device is limited due to its restricted volume and weight, there are often users suffering the problem that their phone battery being dead. There are many research directions in embedded low power field at present. The relationship between low power and user behavior recognition was aimed, which started with recognizing user behavior using machine learning and then obtains the user’s daily usage …

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From Sse To Opencl: Comparison Of Parallel Algorithms For Skeletal Animation On Multi-Core Cpus, Shousheng Liu, Chen Ge, Chunyong Ma, Han Yong Sep 2020

From Sse To Opencl: Comparison Of Parallel Algorithms For Skeletal Animation On Multi-Core Cpus, Shousheng Liu, Chen Ge, Chunyong Ma, Han Yong

Journal of System Simulation

Abstract: While skeletal animations consist of high fidelity mesh and complex vertex binding, there is a huge performance bottleneck. Previous studies used GPUs to accelerate animation, but the general purpose computing performance of cheap GPUs was lower than high end CPUs. In order to explore the performance for multi-core CPUs to make up the shortfall of cheap GPUs for general purpose computing, the latest parallel scheme based on OpenCL which integrated the former two levels of parallelization was proposed, comparing to the traditional parallel scheme formed by SSE and OpenMP oriented to instruction parallelization and thread parallelization separately. The experimental …

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Research On Model And Simulation Of Bullwhip Effect In Supply Chain Based On Pid, Hebing Zhang Sep 2020

Research On Model And Simulation Of Bullwhip Effect In Supply Chain Based On Pid, Hebing Zhang

Journal of System Simulation

Abstract: Under the uncertainty of market demand, the method exponential smoothing was utilized to forecast the real demand, coupled with information sharing and PID control theory. Four kinds of ordering models were established under different backgrounds, including the ones with or without information sharing, further on, based on the PID control respectively. A comparing of values was obtained by the simulation examples of corresponding bullwhip effect. Through the research, it is found the impact of PID control is better than that of information sharing on weakening the bullwhip effect, which is fit for the condition without information sharing. PID …

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Modeling And Simulation Of Urination Assist System Driven By Ultrasonic-Vaporized Steam, Li Xiao, Huaizhou Zhou, Zhichao Shi, Ting Guan, Yuansong Xiao Sep 2020

Modeling And Simulation Of Urination Assist System Driven By Ultrasonic-Vaporized Steam, Li Xiao, Huaizhou Zhou, Zhichao Shi, Ting Guan, Yuansong Xiao

Journal of System Simulation

Abstract: Aiming at the problem of assisting the neurogenic bladder micturating, a novel urination assist system driven by ultrasonic-vaporized steam was proposed. The mathematical model of the multi-field coupling relation between the external ultrasonic controlling parameters and the urine flow rate of urinary bladder was built using ultrasonics, thermodynamics and fluid mechanics theories. The simulation analysis of the influence of the controlling parameters on the urine flow rate performance of the system was conducted. The results show that the urine flow rate are mainly affected by the ultrasonic sound intensity, frequency, radiation area and time, as well as the system …

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Gpu-Accelerated Simulation For Class Of Multi-Agent Based Models, Zhao Yuan, Jiachang Cheng, Wang Lu, Yueming Hu Sep 2020

Gpu-Accelerated Simulation For Class Of Multi-Agent Based Models, Zhao Yuan, Jiachang Cheng, Wang Lu, Yueming Hu

Journal of System Simulation

Abstract: A parallel agent-based model of Von Thünen Model was proposed driven by graphics processing units (GPUs). The Von Thünen Model often involved the simulation of large numbers of geographically located individual decision-makers and a massive number of individual-level interactions. This simulation required substantial computational power. GPU-enabled computing resources provided a massively parallel processing platform based on a fine-grained shared memory paradigm. This massively parallel processing platform held considerable promise for meeting the computing requirement of agent-based models of spatial problems. A dynamic relationship table rebuilding method was proposed to enable the use of GPUs for parallel agent-based modeling of …

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Simulation On Superframe Transmission Mechanism In Wireless Sensor Networks, Hairong Yan, Yufei Wei, Zhang Yan, Xie Yue, He Kai Sep 2020

Simulation On Superframe Transmission Mechanism In Wireless Sensor Networks, Hairong Yan, Yufei Wei, Zhang Yan, Xie Yue, He Kai

Journal of System Simulation

Abstract: At present, studies on real-time performance and reliability of WSN are mostly based on the performance analysis, protocol optimization or mathematical modeling with IEEE 802.15.4 standard MAC Protocol. However, there is no concern about the large impact on the network real-time and reliability caused by duration of the competitive access control phase (CAP) and non-competitive access control stage (CFP) in the IEEE 802.15.4 standard superframe structure. To solve these problems, a MAC layer superframe mechanism simulation algorithm was designed and implemented to simulate the IEEE802.15.4 standard MAC-layer superframe mechanism by establishing a state machine model. This design also built …

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Design Of Micro-Strip Antenna Based On Step-Like Electromagnetic Band-Gap Structure To Improve Bandwidth And Gain, Zhigang Xiao, Jiang Yao, Shaoquan Yin Sep 2020

Design Of Micro-Strip Antenna Based On Step-Like Electromagnetic Band-Gap Structure To Improve Bandwidth And Gain, Zhigang Xiao, Jiang Yao, Shaoquan Yin

Journal of System Simulation

Abstract: Design of a micro-strip antenna based on electromagnetic band-gap structure can significantly improve the bandwidth and gain of the antenna. EBG structure is used to suppress the surface wave propagation and increase the radiation gain of the antenna. At the same time, the antenna substrate thickness increase is beneficial to expand the bandwidth of the antenna. According to the actual need, the EBG and the antenna can use diffident substrate. The method can replace the traditional choke ring antenna and significantly reduce the antenna size without sacrificing the performance of the antenna.

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Analysis The Nano Contact Force Of Single Crystal Copper In Contact And Separation Processes, Jianmeng Huang, Jingjing Chen Sep 2020

Analysis The Nano Contact Force Of Single Crystal Copper In Contact And Separation Processes, Jianmeng Huang, Jingjing Chen

Journal of System Simulation

Abstract: On the basis of considering the adhesive force and copper substrate elastic-plastic deformation, the contact and separation processes between diamond indenter and copper substrate are simulated based on EAM and Morse potentials and Verlet algorithm. The results show that, when diamond indenter approaches slowly to copper substrate during the contact process, some atoms at the top level of substrate happened “snap back” phenomenon significantly due to the gravity became the main interaction force. Furthermore, it can be seen that the contact force and the accumulation phenomenon of dislocation atoms increase gradually with the increment of diamond displacements. During in …

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Research On Simulation Of Manufacturing Grid Resource Allocation Based On Scale Free Network, Xiangbin Zhang, Yanyan Li Sep 2020

Research On Simulation Of Manufacturing Grid Resource Allocation Based On Scale Free Network, Xiangbin Zhang, Yanyan Li

Journal of System Simulation

Abstract: In order to study the variation of resource allocation efficiency in manufacturing grid, the manufacturing grid resource allocation network model was established based on scale free network theory taking the manufacturing resource characteristics such as distribution and diversity into account. By calculation of the statistical indicators of complex networks and attribute functions, the appropriate resource allocation scheme was selected to realize global optimal resources allocation. Using this model and evaluation index of resource allocation, the variation rule was figured out that explained how resource allocation efficiency varied with structural evolution of manufacturing grid through analyzing the data from simulation …

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Feature Point Positioning And Modeling Approach For Human Body Based On Improved Asm, Xinjuan Zhu, Xiaoya Xiong Sep 2020

Feature Point Positioning And Modeling Approach For Human Body Based On Improved Asm, Xinjuan Zhu, Xiaoya Xiong

Journal of System Simulation

Abstract: Traditional Procrustes normalization needs many iterations which will spend a lot of time. Here training samples alignment was set only after once translation, rotation and scaling operations by marking anchor point and using average body shape as the initialization rules model. Traditional ASM algorithm leads to a long computing time and is easily to make the feature points matching error for gray model’s similarity. It was improved by using every feature points as a center point, training gray model though its rounded rectangular gray distribution, and searching target points within its 24 neighborhood points. Experimental results show …

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Control Law Research And Design Of Large Commercial Civil Aircraft For Oscillatory Failure, Ziyu Yao, Jianliang Ai Sep 2020

Control Law Research And Design Of Large Commercial Civil Aircraft For Oscillatory Failure, Ziyu Yao, Jianliang Ai

Journal of System Simulation

Abstract: The oscillatory failure often occurs because of the electronic equipment failure or the structure vibration in the modern commercial civil aircraft. The solution to the problem needs lots of sensors and control controllers and it make the control structure complex and leads to further fault. The mathematical model including the servo loop was built and the analytical redundancy was used for the fault detection. A combined control law was designed based on the detection result that was the residual of the servo signal and the state quantities. The design improves the control structure of the EFCS feedforward channel …

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Research On Motion Control Technology Of Virtual Human’S Lower Limb Based On Optical Motion Capture Data, Liang Feng, Zhili Zhang, Xiangyang Li, Zhibo Tang, Ma Chao Sep 2020

Research On Motion Control Technology Of Virtual Human’S Lower Limb Based On Optical Motion Capture Data, Liang Feng, Zhili Zhang, Xiangyang Li, Zhibo Tang, Ma Chao

Journal of System Simulation

Abstract: As passive-optical motion capture equipment could only capture the motion information of human’s key joints, a simplified skeleton structure model of virtual human was introduced; and then the error sources of motion data of virtual human were analyzed according to the acquisition process of optical motion capture data based on the skeleton structure model. Focusing on the problem of poor continuity of motion process of virtual human’s lower limb caused by continuity deficiency of motion capture data, a motion control method was proposed to strengthen the control of motion process of virtual human, which included data smoothing of motion …

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Gw190521: A Binary Black Hole Merger With A Total Mass Of 150 M, R. Abbott, T. D. Abbott, S. Abraham, F. Acernese, K. Ackley, C. Adams, R. X. Adhikari, V. B. Adya, C. Affeldt, M. Agathos, K. Agatsuma, N. Aggarwal, O. D. Aguiar, A. Aich, L. Aiello, A. Ain, P. Ajith, S. Akcay, G. Allen, A. Allocca, P. A. Altin, A. Amato, S. Anand, A. Ananyeva, S. B. Anderson, W. G. Anderson, S. V. Angelova, S. Ansoldi, S. Antier, S. Appert, K. Arai, Tiffany Z. Summerscales Sep 2020

Gw190521: A Binary Black Hole Merger With A Total Mass Of 150 M, R. Abbott, T. D. Abbott, S. Abraham, F. Acernese, K. Ackley, C. Adams, R. X. Adhikari, V. B. Adya, C. Affeldt, M. Agathos, K. Agatsuma, N. Aggarwal, O. D. Aguiar, A. Aich, L. Aiello, A. Ain, P. Ajith, S. Akcay, G. Allen, A. Allocca, P. A. Altin, A. Amato, S. Anand, A. Ananyeva, S. B. Anderson, W. G. Anderson, S. V. Angelova, S. Ansoldi, S. Antier, S. Appert, K. Arai, Tiffany Z. Summerscales

Faculty Publications

© 2020 authors. Published by the American Physical Society. On May 21, 2019 at 03:02:29 UTC Advanced LIGO and Advanced Virgo observed a short duration gravitational-wave signal, GW190521, with a three-detector network signal-to-noise ratio of 14.7, and an estimated false-alarm rate of 1 in 4900 yr using a search sensitive to generic transients. If GW190521 is from a quasicircular binary inspiral, then the detected signal is consistent with the merger of two black holes with masses of 85-14+21 Mm and 66-18+17 Mm (90% credible intervals). We infer that the primary black hole mass lies within the gap produced by (pulsational) …

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Gw190521: A Binary Black Hole Merger With A Total Mass Of 150 M⊙, R. Abbott, T. D. Abbott, A. Aich, G. Bissenbayeva, Teviet Creighton, Mario C. Diaz, Soma Mukherjee, Volker Quetschke, Malik Rakhmanov, K. E. Ramirez, P. K. Roy, W. H. Wang, A. K. Zadrozny Sep 2020

Gw190521: A Binary Black Hole Merger With A Total Mass Of 150 M⊙, R. Abbott, T. D. Abbott, A. Aich, G. Bissenbayeva, Teviet Creighton, Mario C. Diaz, Soma Mukherjee, Volker Quetschke, Malik Rakhmanov, K. E. Ramirez, P. K. Roy, W. H. Wang, A. K. Zadrozny

Physics and Astronomy Faculty Publications and Presentations

On May 21, 2019 at 03:02:29 UTC Advanced LIGO and Advanced Virgo observed a short duration gravitational-wave signal, GW190521, with a three-detector network signal-to-noise ratio of 14.7, and an estimated false-alarm rate of 1 in 4900 yr using a search sensitive to generic transients. If GW190521 is from a quasicircular binary inspiral, then the detected signal is consistent with the merger of two black holes with masses of 85+21−14  M⊙ and 66+17−18  M⊙ (90% credible intervals). We infer that the primary black hole mass lies within the gap produced by (pulsational) pair-instability supernova processes, with only a 0.32% probability of …

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Properties And Astrophysical Implications Of The 150 M ⊙ Binary Black Hole Merger Gw190521, R. Abbott, T. D. Abbott, A. Aich, G. Bissenbayeva, Teviet Creighton, Mario C. Diaz, Soma Mukherjee, Volker Quetschke, Malik Rakhmanov, K. E. Ramirez, P. K. Roy, Wenhui Wang, A. K. Zadrozny Sep 2020

Properties And Astrophysical Implications Of The 150 M ⊙ Binary Black Hole Merger Gw190521, R. Abbott, T. D. Abbott, A. Aich, G. Bissenbayeva, Teviet Creighton, Mario C. Diaz, Soma Mukherjee, Volker Quetschke, Malik Rakhmanov, K. E. Ramirez, P. K. Roy, Wenhui Wang, A. K. Zadrozny

Physics and Astronomy Faculty Publications and Presentations

The gravitational-wave signal GW190521 is consistent with a binary black hole (BBH) merger source at redshift 0.8 with unusually high component masses, M ⊙ and M ⊙, compared to previously reported events, and shows mild evidence for spin-induced orbital precession. The primary falls in the mass gap predicted by (pulsational) pair-instability supernova theory, in the approximate range 65–120 M ⊙. The probability that at least one of the black holes in GW190521 is in that range is 99.0%. The final mass of the merger ( M ⊙) classifies it as an intermediate-mass black hole. Under the assumption of a quasi-circular …

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Earth’S Outgoing Longwave Radiation Variability Prior To M ≥6.0 Earthquakes In The Taiwan Area During 2009–2019, Ching-Chou Fu, Lou-Chang Lee, Dimitar Ouzounov, Jyh-Cherng Jan Sep 2020

Earth’S Outgoing Longwave Radiation Variability Prior To M ≥6.0 Earthquakes In The Taiwan Area During 2009–2019, Ching-Chou Fu, Lou-Chang Lee, Dimitar Ouzounov, Jyh-Cherng Jan

Mathematics, Physics, and Computer Science Faculty Articles and Research

This paper proposes an analysis method, using the National Oceanic and Atmospheric Administration satellite data, to trace variations in outgoing longwave radiation (OLR) for finding the precursors of earthquakes. The significance of these observations is investigated using data sets of recent M ≥6.0 earthquakes around the Taiwan area from 2009 to 2019. We suggest that the precursory signal could be an EIndex anomaly (EA) in the form of substantial thermal releases distributed near the epicenter. The consecutive appearances of OLR EAs are observed as precursors 2–15 days before significant earthquakes, and we refer to this as a pre-earthquake OLR …

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Managing Natural Grasslands In A Changing World: Grazing Ecology Insights To Accomplish Re‐Oriented Management Expectations, Paulo C. De F. Carvalho, Sila C. Da Silva, Carlos Nabinger, Anibal De Moraes, Teresa C. M. Genro Sep 2020

Managing Natural Grasslands In A Changing World: Grazing Ecology Insights To Accomplish Re‐Oriented Management Expectations, Paulo C. De F. Carvalho, Sila C. Da Silva, Carlos Nabinger, Anibal De Moraes, Teresa C. M. Genro

IGC Proceedings (1993-2023)

No abstract provided.

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Long‐Term Soil Nitrogen And Carbon Change In Semi Steppe Rangelands Of Golestan National Park, Iran, Ramin Nourqolipour, Mohammad Jafary, M. Reza Bihamta Sep 2020

Long‐Term Soil Nitrogen And Carbon Change In Semi Steppe Rangelands Of Golestan National Park, Iran, Ramin Nourqolipour, Mohammad Jafary, M. Reza Bihamta

IGC Proceedings (1993-2023)

No abstract provided.

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On An Asset Model Of Hobson-Rogers Type, Narn-Rueih Shieh Sep 2020

On An Asset Model Of Hobson-Rogers Type, Narn-Rueih Shieh

Journal of Stochastic Analysis

No abstract provided.

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