bluuebunny/crossref_metadata_2025_split huggingface dataset:
Self-organizing Competitive Neural Network Based Adaptive Sparse Representation for Magnetotelluric Data Denoising
Authors: Liu Xiaoqiong , Li Guang , Li Jin , Zhou Xiaohui , Gu Xianjie , Zhou Cong , Gong Meng 
Published: December 2023

Abstract
The existing sparse decomposition denoising methods for magnetotelluric (MT) data need to set the iterative stop condition manually, which not only has a large workload and high difficulty, but also easily causes subjective bias. To this end, we propose a new adaptive sparse representation method for MT data denoising. First, the data to be processed is divided into high-quality segments and noisy segments by machine learning algorithm. Then, the characteristic parameters of high-quality segments are calculated, and the boundary value of the characteristic parameters is taken as the threshold. The threshold has two functions, one is as a criterion for signal-to-noise identification, and the other is as an iterative stop condition for subsequent sparse decomposition. Finally, the optimized orthogonal matching pursuit algorithm is used to separate the signal and noise of the noisy segments, and the denoised segments and high-quality segments are combined to obtain the complete denoised MT data. The field data processing results show that this method is a fully automatic and intelligent MT data denoising method. It greatly improves the signal-to-noise ratio and the apparent resistivity-phase curves.
Influence of Temperature and Atmospheric Pressure on Nonlinear Elasticity of Rock
Authors: Liu Qian , Feng Xuan 
Published: December 2023

Abstract
We conducted a 28-day long period co-propagating longitudinal acoustic wave experiment to monitor the change of nonlinear elastic modulus of rock. During the monitoring period, we monitored the atmospheric pressure and temperature of the environment. We analyzed the relationship between the change of nonlinear elastic modulus of rock and atmospheric pressure and temperature. We found that the change of them appears high consistency. But the change of ΔM\/E is not sensitive to small amplitude change of atmospheric pressure. And there is a certain delay with the influence of temperature to the ΔM\/E.
Construction and Significance of Comprehensive Geophysical Observatory Array in Dabie Monitoring and Forecasting Experimental Site
Authors: Zheng Haigang , He Kang , Liang Xiao , Long Jianfeng , Xu Rugang 
Published: December 2023

Abstract
This paper reviews the development process of the seismic scientific experimental site at home and abroad and introduces the background, significance and construction of the the Dabie Monitoring and Prediction Experimental Site, which led by Anhui Earthquake Agency. During the 12th Five-Year Plan, the office of this experimental site was built, which is located in Lu’an Seismic Station. During the 13th Five-Year Plan, a comprehensive geophysical observation array is built, including a seismic science array, a flux-gate array, a optical-fiber array, a infra-sound array and a baseline of the gravity field at this experimental site. Through these constructions, it can not only play a important role in the study of earthquake monitoring and prediction, but also contribute to the study of the crustal structure detection, crustal strain analysis, seismic acoustic characteristics and gravity equipment calibration.
Study on Time Domain Electromagnetic Remote Boundary Detection Method for Multi-component Well Logging
Authors: Xiao Zhanshan , Hu Haitao , Yan Junjie , Shao Kun , Di Shuhua , Yao Chunming , Yuan Caihua 
Published: December 2023

Abstract
Borehole time-domain electromagnetic remote detection realizes reservoir scale formation boundary measurement. There is a strong correlation between the abnormal response signal of borehole time-domain electromagnetic pure quadratic field and the distance of formation boundary. The greater the boundary distance, the later the abnormal extreme point appears. The response characteristics of the secondary field of the coaxial and coplanar multi-component measurement modes are just "opposite" at different dip angles. Using borehole time-domain electromagnetic measurement information, the formation dip and remote borehole boundary detection can be directly calculated.
Exploration of Shallow Structural Characteristics in the Xinyi Segment of the Anqiu-Juxian Fault of Tan-Lu Fault Zone
Authors: Zhao Qiguang , Xu Hangang , Meng Ke , Gu Qinping , Yang Hao 
Published: December 2023

Abstract
The Anqiu-Juxian fault is the most active branch of the Tan-Lu fault zone. As most of the Xinyi segment of the fault is buried, there is little research on such important issues as its shallow structure and spatial distribution. In this paper, the shallow structural characteristics of the Xinyi segment of the Anqiu-Juxian fault are comprehensively studied by the shallow seismic exploration. The results of this study show that: (1) The Anqiu-Juxian fault runs through the entire Xinyi area, with its strike being approximately NNE5°∽15°. (2) The Xinyi segment of the fault follows a single branching–double branching–single branching pattern from north to south. In the single branch section, the fault is characterized by strike-slip thrust, while in the double-branch section, the east and west branches of the Anqiu-Juxian fault are both strike-slip normal faults. The results of this study, for the first time, comprehensively provided seismological evidence of the shallow structure of the Xinyi section of the Anqiu-Juxian fault and basic data for the planning and construction of Xinyi urban.…
Integrated Study for Seservoir Characterization of Kadanwari Area of Lower Indus Basin, Pakistan Using Seismic Data and Well Data
Authors: Raza Muhammad Sharjeel , Guo Rongwen , Cao Xun , Hou Sheng 
Published: December 2023

Abstract
As a developing nation, Pakistan is confronted with serious energy challenges as a result of a scarcity of hydrocarbons. And the major objective of this paper is to assess the hydrocarbon potential of a study zone in Pakistan’s central Sindh Basin, which is known as the Kadanwari Gas area. The characterization of the reservoir has been accomplished by the use of conventional geophysical techniques, including 2D seismic data and well log information. By converting the time structure map of seismic, it is possible to produce the depth contour map. And a method for converting seismic data to Acoustic Impedance is described. Based on well logs collected after drilling, Petro-physical characteristics such as shale volume, porosity, water saturation, and hydrocarbon saturation were calculated. It was established that the review area is part of the extensional structural system by normal faulting that was seen on seismic sections. The seismic interpretation of these lines that emerged proved the existence of the Horst and Grabben structures as a consequence of normal faulting. The region around these buildings has a significant amount of potential for hydrocarbon accumulation.
Research and Application of Microseismic First Arrival Picking Method Based on Geophone Spacing Constraint
Authors: Qiao Hanqing , Liu Cai , Fang Hui , Zhang Yaoyang 
Published: December 2023

Abstract
Picking the first arrival of microseismic events has been widely recognized as an essential step for data processing of microseismic monitoring. In this paper, we have provided a practical method, which was developed by introducing geophone spacing constraint to original cross-correlation functions for further optimization of seismic arrival picking. First, all valuable traces are processed by a cross-correlation algorithm and time difference correction. Then, based on distance constraints between geophones, local cross-correlation is applied to manipulate those acquired records for further time difference correction and multi-trace records after the second time difference correction are superimposed to form stacking traces, followed by picking the arrivals of microseismic events using the STA/LTA method. Finally, by combining the stacking of first arrival information and the relative correction of time difference, the first arrival time of microseismic events can be obtained. The actual data processing results show that, compared with the conventional multi-trace cross-correlation method, our proposed method reasonably avoids the influence of the offset on the first arrival time, thus effectively improving the accuracy of the first arrival picking of microseismic events.
Application of GeoGME Software in Shallow Oil and Gas Target Exploration
Authors: Hu Zuzhi , Song Shaojiang , Deng Guojun , Liu Juan , Tao Deqiang , Zhao Zhi , Zhang Yongfu 
Published: December 2023

Abstract
GeoGME is a software that can run on Linux and Windows operating systems and has the function of processing and interpreting the whole process of gravity, magnetic and electromagnetic data from field data to final results. In terms of preprocessing of magnetotelluric (MT) data, GeoGME provides several single point denoising methods, in which spatial filtering can be used to achieve good results. For static correction, the influence of static displacement can be suppressed by using man-machine interaction and 2D filtering static correction technique. In terms of inversion, the software also has a variety of inversion processing modules of 1D and 2D. The 2D regularization inversion method is used to process the field MT data from ES basin, and the inversion results show that the electrical characteristics of the shallow layer in resistivity profile are in good agreement with the known electrical logging curves. According to the electrical characteristics of petroliferous formation, the potential target oil and gas enrichment area is preliminarily inferred. The results of test line show that using GeoGME software in shallow target exploration can achieve good geological result.
A Rotational Seismometer Based on Dual-polarization Fiber Optic Gyroscopes
Authors: Wu Junzhu , Cao Yuwen , Zhang Dingfan , Rong Chao , Huang He , Jiang Xiao Dong 
Published: December 2023

Abstract
A rotational seismometer based on dual-polarization interferometric fiber optic gyroscopes is designed and demonstrated, it can measure three rotation components at the same time. The angle random walk is about

1.67
×

10

−
4

∘
/

h

. The self-noise ranging from 0.1Hz to 125 Hz is about

7.0
×

10

−
8

rad
/
s
/

Hz

. It can be applied to seismic monitoring, seismic exploration, engineering monitoring and other fields.
Detection Technology of Lining by Comprehensive Wave Field Method
Authors: Wang Yanlong , Tan Chun , Hu Xinmin , Liang Jiawei , Du Lizhi 
Published: December 2023

Abstract
As a permanent supporting structure of underground tunnel, the quality of concrete lining plays a vital role in the long-term stability and normal use of the tunnel. How to accurately detect the thickness and internal defects of tunnel lining concrete and the void of joint surface is a problem of great concern. In this paper, combined with many detection methods in China and abroad, based on the seismic wave theory, a set of detection technology of lining by comprehensive wave field method suitable specially for concrete lining is proposed, and the corresponding detection equipment and processing software are designed and developed, which plays a vital role in the development of lining quality nondestructive detection technology.
Data Management and Application System of Geological Gisaster Monitoring Data
Authors: Cui Fangzi , Li Qiuchen , Cao Yang 
Published: December 2023

Abstract
The geological disaster monitoring data management and application system adopts B/S technology structure, based on data pre-processing technology and comprehensive analysis technology such as statistic calculation of the monitoring data, displacement vector map and comprehensive analysis map of displacement and rainfall, etc., this paper expounds the management and application of geological disaster monitoring data, and solves the problems of the lack of data, the poor quality of data and the lack of analytical models in geological disaster monitoring work. The ability of comprehensive processing and scientific analysis of geological disaster monitoring data has been further improved.
Inflatable boxing pads with air pressure sensor system for measuring kick force in Muay Thai
Authors: Kan K , Wittaya P , Kittipob P , Jennarong P , Meechai T 
Published: December 2023

Abstract
This study focuses on the development of inflatable boxing pads that measure kick force in Muay Thai through an air pressure sensor system integrated with an Arduino board and LabVIEW program. The objective is to calibrate and test the device with Thai boxers and assess its potential as a training tool with online trainers. In this research, we designed an experimental device and wrote a program to establish communication between the computer and the Arduino board via LabVIEW. For the inflatable boxing pads, we used an MPX10DP air pressure sensor to measure kick force. The sensor was integrated into the pads to accurately measure the force of each kick. Subsequently, the inflatable boxing pads were calibrated by applying different weights (5, 10, 15, 20, 25, and 30 kg, respectively) on the sensor. We recorded the output voltage corresponding to each weight and found potential differences ranging from 2.500 V to 2.524 V. These values were used to create a calibration curve for the device, which was used to convert voltage output to force measurements. Overall, this methodology allowed us to accurately measure the force of each kick on the inflatable boxing pads, making them a useful tool for Muay Thai training. The study also measured the kicking power of male and female athletes, with light, mid-level, and heavy kicking power ranges of 196.2-392.4 N, 441-637.65 N, and 784.8-1030.05 N, respectively. The inflatable boxing pads show potential as a useful tool in Muay Thai training, especially with the increasing demand for online training.
Development of computer-aided learning with hands-on activities kits on topic of gears for a flipped robotics camp
Authors: Mongkholsiriwattana Chinapat , Phengpom Tinnapob , Precharattana Monamorn 
Published: December 2023

Abstract
Teaching science content on topics that are not included in the Ministry of Education curriculum poses a challenge for school teachers. Teaching and learning must be organized as a form of camp during the weekends. Besides, teachers also must be prepared and designed an extra lesson plan for the camp, which is consisted of important parts such as pieces of knowledge, including introduced learning materials related to the activities as well as any other activities that may occur at the camp. To address the limited learning time during these weekend camps, a 360-degree virtual tour combined with a set of hands-on activity kits thus is introduced. This is designed to develop the essential knowledge and skills related to gear for students before attending the camp. In the 360-degree virtual tour, the virtual camp will be simulated. The various situations and equipment related to the gears will be introduced. The students will be able to learn and develop their prerequisite knowledge and skills by using various tools kits through a computer and the provided kits, which they are able to learn on their own at home as much as they are needed before attending the camp. In this paper, we aim to (i) introduce a development of a 360-degree virtual tour on the topic of gears for a flipped robotics camp and (ii) examine the efficiency of the developed 360-degree virtual tour. Three content experts and technical media experts are enrolled in this study. The results of the 360-degree virtual tour quality examination here are presented in both quantitative and qualitative forms.
Certification of extension tubes for medical use according to TIS 2385-2551
Authors: Kittiwattanokhun A , Naksri K , Keawkaew A , Prakitsuwan D , Leeudomwong T , Sanponpute T 
Published: December 2023

Abstract
The extension tube is a medical device for delivering substances into or out of the body through blood vessels of the patient. To ensure the safety of users and promote the domestic production, the industrial product standard of extension tubes was established as Thai Industrial Standard (TIS) No. 2385-2551: Extension tubes for medical use. Bever Medical Industry (BMI) is a medical device company that manufactures and markets medical supplies for single use. At present, the overall physical requirements standard of extension tubes has not been accredited according to ISO/IEC 17025. This study aims to certify the physical test of extension tubes for medical use and to implement the laboratory quality management system according to ISO/IEC 17025. We set up a laboratory to perform the physical test of extension tubes according to TIS 2385-2551. The measuring equipment was applied appropriately and calibrated by accredited laboratories to ISO/IEC17025 related to metrological traceability. The established laboratory performed the evaluation of measurement uncertainty for some testing and reported the results to the customer as a test certification report. In this study, a total of 1.75 million pieces of extension tubes have been certified the quality improvements. Therefore, it is valuable for entrepreneurs, importers, and exporters in both domestic and international markets.
Study of hydroxyl and nitrite radicals concentration in plasma-activated water by photoluminescence spectroscopy
Authors: Klumpara Ruchapong , Ngamjarurojana Athipong , Boonyawan Dheerawan 
Published: December 2023

Abstract
The atmospheric pressure plasma in water has numerous applications, including utilizing reactive species in the dye degradation process for polluted water remediation. In the current study, an air plasma jet generated atmospheric pressure plasma, transporting reactive oxygen and nitrogen species (RONS) onto the solution surface, such as OH and NO2 radicals, which immediately developed in an aqueous solution. The identification and concentration of radicals are determined using photoluminescence spectroscopy (PL) and irradiation over the surface of an aqueous solution. Based on the reaction between hydroxyl ions and terephthalic acid, fluorimetric methods for hydroxyl ions determination are developed. In addition, 2,3-diamino naphthalene was selected for the nitrite reaction. The jet nozzle-to-solution-surface distance, treatment time, and carrier air flow rate substantially impacted determining the radical’s concentration in aqueous solution.
Design and development of OCR software for remote measurement and calibration
Authors: Nanna N , Chanthawong N , Buajarern J 
Published: December 2023

Abstract
The advent of digital technology has led to significant changes in work processes in many organizations and industries worldwide including Thailand. This work aims to apply digital technology to improve measurement and metrology in terms of accuracy, productivity, and variability. We developed machine vision software for monitoring and collecting digital data from measurement systems. The application of Optical Character Recognition (OCR) technology in metrology is the first step toward digitalization, enabling enterprises to improve their measurement processes by automating data collection, analysis, and management. Moreover, it can be integrated with machine learning algorithms to enhance the automation of complex measurement tasks. To achieve this goal, an OCR software for data recording was designed in the LabVIEW environment. The image captured by the camera is processed by the LabVIEW OCR system which is trained continuously until it can recognize characters consistently and accurately. This software has been tested with the calibration systems which has a seven-segment digital format. The result shows that the software can acquire and transmit the instrument reading with reliable and exceptional accuracy. In addition, it can also reduce the steps and time required for measurement. In conclusion, the application of OCR technology can improve the efficiency, productivity, and accuracy of measurement. It also has a promising potential to enable remote measurement and calibration according to ISO/IEC 17025 possible.
Online physics tutorial using problem-solving worksheet: A case study with preservice science teachers
Authors: Eambaipreuk A , Unyapoti T 
Published: December 2023

Abstract
The research-designed worksheets have been shown in our previous study. They could help engage students during lectures and tutorials. However, it was implemented only in face-to-face teaching. This study aimed to investigate if the worksheet can also help engage students as well as facilitate effective teaching in an online tutorial class. The basic concept of force and motion, particularly a free-body diagram, was applied. The worksheet was structured into three task boxes: 1) interpreting a situation, 2) identifying variables, and 3) drawing the diagram. The approach was trialed with 30 preservice science teachers. In the tutorial, the lecture was reduced to the minimum and the discussion based on the activity in the worksheet was encouraged between students and between students and teacher. Open-ended questions were used as pre- and post-tests to examine students’ understanding. A video clip investigated the interaction during the classroom. The results from the SOLO levels showed that most student difficulties found in the pre-test were reduced. Prior to the tutorial, some students could not identify the forces on an object correctly. After the tutorial, their understanding improved. The normalized gain was in the high-level judging from the post-test. The students’ reflections also revealed positive feedback.
The greybody factor for the monopole and odd-parity modes of the Proca field in the Schwarzschild black hole spacetimes
Authors: Bunjusuwan Supanat , Chen Chun-Hung 
Published: December 2023

Abstract
The greybody factor is one of the famous results of the black hole perturbation theory, which describes the transmission probability of a particle radiated by a black hole into spatial infinity. In this work, we separated the angular parts of the equations of motion and derived the radial equations for the Proca field in the Schwarzschild black hole spacetime. The radial equations for the monopole and odd-parity modes are fully decoupled in the Schrödinger-like form. We study the greybody factor by determining the rigorous bound.
The relationship between the shape of SPARC rotation curves to the galactic mass model: a chi-square test of independence
Authors: Haethaisong Waeowan , Duangchan Chaimongkol , Wechakama Maneenate 
Published: December 2023

Abstract
Rotation curves of galaxies are strongly related to dark matter and baryonic matter. The gravitational attraction of baryonic matter, e.g., stars and gas, is the dominant force in the inner regions of galaxies, and its distribution determines the shape of the inner rotation curve. In contrast, the outer regions of galaxies are dominated by the gravitational force of dark matter, which is thought to be distributed in a spherical halo around a galaxy. Since the ratio of rotational speed in the inner regions and maximum rotational speed (η
rot) is related to the shape of the galaxy rotation curve, it might be a significant association between this ratio and each combination of matters, or the mass models. Specifically, for dark matter, we assume the Navarro-Frenk-White (NFW) profile. This study explores the use of SPARC data (Spitzer Photometry and Accurate Rotation Curves) and categorizes shapes of galaxy rotation curves according to η
rot. For mass models, we classify galaxies by considering the reduced chi-square of the best-fit parameter of each model. To determine whether there is a significant association between η
rot and the mass models, we utilize the chi-square test of independence. The study suggests with a 95% confidence level that there is no relation between the mass models and η
rot.