bluuebunny/crossref_metadata_2025_split huggingface dataset:
“I Am Proud to Be a Traitor”
Authors: Benítez-Castro Miguel-Ángel , Hidalgo-Tenorio Encarnación 
Published: July 2022

AbstractNeojihadism taps successfully into the Internet’s influence to disseminate its oppression narrative of Muslims vs. non-believers (Al Raffie 2012). Whilst this type of radicalisation has received attention from psychoanalysis (Kobrin 2010), jihadist discourse is in need of more exhaustive examination. By detecting recruiters’ key persuasive strategies, we may understand what can move people to violent action. In this paper, we employ SFL Appraisal Theory (Martin and White 2005;Bednarek 2008,2009;Benítez-Castro and Hidalgo-Tenorio 2019), to undertake a detailed analysis of the interplay betweenemotionandopinionin a pair of exemplars from two jihadist magazines: The Taliban’sAzanand Al-Qaeda’sInspire. The close inspection of these texts reveals two distinct persuasive strategies: One revolving around a markedly negative pathos of victimhood and deep distress caused by injustice, past and present; and the other conveying pride and confidence at the many virtues behind the jihadi path.
From our sisters/to our sisters
Authors: Aguilera-Carnerero Carmen 
Published: July 2022

Abstract
Since the proclamation of the Caliphate in 2014, an unprecedented number of women have fled to Syria to join the Islamic State (IS). This fact, a matter of national security for many countries, has spotlighted the two major official propaganda magazines of the organisation, Dabiq and Rumiyah, since both publications are considered potential recruitment tools. This paper studies the sections addressed to women in the aforementioned magazines to find out: (a) the roles of women within IS as depicted by the two official propaganda channels and (b) the legitimation strategies used by the organisation to justify their claims. To reach these aims, I will study the data considering the legitimation models proposed by van Leeuwen (2008) and Reyes (2011). The analysis will unveil the ideal type of woman any Muslim female joining the armed group should aspire to become.
The jerk and the vertical fall of a shuttlecock
Authors: Reistad Nina 
Published: July 2022

Abstract
Jerk, the derivative of acceleration with respect to time, is a physical concept of great practical significance. However, this concept is rarely mentioned in textbooks and is often neglected in physics education. This paper describes how the concept of jerk can be easily introduced in the study of the dynamics of falling bodies, which are significantly affected by air resistance. In this regard, the vertical fall of two different feather shuttlecocks, a standard and a miniature one, is studied. In this simple vertical fall experiment, air resistance is significant and measurable, implying that the acceleration changes, and thus, the jerk can be determined. The velocity, acceleration, and jerk measurements with time during the vertical fall are described and compared with those from different standard air resistance models. The proposed setup can help initiate a discussion of well-known basic physics concepts and modeling approaches, such as displacement, velocity, acceleration, and particularly the often-neglected jerk concept.
Sensing performance of room temperature operated MEMS gas sensor for ppb level detection of hydrogen sulfide: a review
Authors: Verma Gulshan , Gupta Ankur 
Published: July 2022

Abstract
The presence of hydrogen sulfide (H2S) determines the air quality of both indoor and outdoor environments. To measure H2S concentration levels in the environment, a variety of sensors have been developed. metal oxide (MO
x
) based gas sensors are among the most interesting class of MEMS sensors, capable of producing highly sensitive, selective, and specific signals in a plethora of chemical and physical signals. Nonetheless, in the presence of moisture, they have poor selectivity and response. However, the sensing performance of MO
x
towards H2S gas is previously reported in a number of studies. Nanotechnology advancements are expected to lead to the progress of highly sensitive, stable, and selective MO
x
-based H2S gas sensors in the future. This review article aims at enlightening the various aspects of H2S gas sensing technology in an unpretentious yet comprehensive manner.
Effect of plasma-flow coupling on the ignition enhancement with non-equilibrium plasma in a sequential combustor
Authors: Shcherbanev Sergey A , Malé Quentin , Dharmaputra Bayu , Solana-Pérez Roberto , Noiray Nicolas 
Published: July 2022

Abstract
The effect of the regime of nanosecond repetitively pulsed discharges (NRPDs) on ignition and stabilization of a natural-gas/hydrogen/air flame in the sequential stage of a lab-scale atmospheric pressure sequential combustor is investigated experimentally. Electrical parameters of the NRPDs are characterized by measuring voltage, current, and deposited energy. Fast gas heating (FGH) of the nanosecond discharges is measured in a single pulse regime and validated by means of 0D kinetic modelling. It was found that the conventional scheme for energy release from internal degrees of freedom adequately describes the dynamics of FGH in vitiated hot environment diluted with air. Short-gated ICCD imaging and spatially-resolved emission spectroscopy are used to identify the coupling between the NRPDs and the vitiated hot flow. The effectiveness of the NRPDs actuation is assessed through the

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chemiluminescence images of the sequential flame. The distance of the center of gravity of the sequential flame to the outlet of the mixing channel is evaluated, with and without plasma actuation. The effect of fuel reactivity on plasma effectiveness is also studied by varying the fraction of hydrogen in the fuel blend of the second stage of the combustor. The results show that the glow NRPDs regime allows strengthening the flame anchoring for the most reactive blends considered in this work, while the spark NRPDs is required for the ignition and prevention of lean blow-out of the flame for the least reactive fuel blends which exhibit low fractions of hydrogen.
Self-temperature compensation approach for fiber specklegram magnetic field sensor based on polarization specklegram analysis
Authors: Hu Shicheng , Liu Haifeng , Liu Bo , Lin Wei , Zhang Hao , Song Binbin , Wu Jixuan 
Published: July 2022

Abstract
A self-temperature compensation method based on polarization specklegram analysis and magnetic birefringence effect of magnetic fluid (MF) is proposed for a fiber speckle sensor (FSS). The temperature compensation is achieved by measuring the variation difference of the two specklegrams with vertical linear polarization state. A fiber specklegram magnetic field sensor has been designed with this method and the magnetic-birefringence effect of MF. The measurement of magnetic field with high stability and good repeatability has been successfully achieved, which demonstrates the effectiveness of the proposed method. Due to the merits of low cost, ease of implement and system simplicity, the proposed method can promote the practical use of the FSS in long term monitoring.
Few-shot bearing fault diagnosis based on meta-learning with discriminant space optimization
Authors: Zhang Dengming , Zheng Kai , Bai Yin , Yao Dengke , Yang Dewei , Wang Shaowang 
Published: July 2022

Abstract
In practical industrial applications, the collected fault data are usually insufficient due to the sudden occurrence of faults. However, the current deep-learning-based fault diagnosis methods often rely on a large number of samples to achieve satisfactory performance. Moreover, the heavy background noise and the variability of working conditions also degrade the performance of existing fault diagnostic approaches. To address these challenges, a new fault diagnosis method for few-shot bearing fault diagnosis based on meta-learning with discriminant space optimization (MLDSO) is proposed in this research. First, the fault feature of the rolling bearing is extracted through the tailored networks. Then, the feature extractor is optimized by the discriminant space loss proposed in this paper, to promote the clustering of the extracted fault features of the same category and to distinguish between different types of fault features. Next, the feature extractor and discriminant space optimizer are constructed to optimize the feature discriminant space; thus, a high fault-tolerant discriminant space is obtained for meta-learning. Eventually, the faults in the new task can be accurately classified with the assistance of previously learned meta-knowledge and a few known samples when dealing with new tasks under different working conditions. The effectiveness and superiority of the proposed MLDSO method are verified via the datasets collected from our self-designed experimental platform and the Case Western Reserve University test platform. The experimental results show superior performance over the advanced methods. This indicates that the proposed method is a promising approach under small sample situations, heavy noise, and variable working conditions.
Sound waves in a tube: measuring sound pressure profiles using smartphones
Authors: Soares A A , Cantão R F , Pinheiro Jr J B , Castro F G 
Published: July 2022

Abstract
We present an experiment designed to study standing waves in a tube with one closed end. Two smartphones are used, one to emit a sound signal with a chosen frequency and another equipped with a microphone to detect the sound pressure level inside the tube. Due to the finite diameter of the tube, the standing wave node (or antinode) appears slightly outside of its opened end so the end correction is applied. Results show a good agreement with the theory, making this proposal suitable to be applied to secondary school classes. It is a low cost experiment and has the potential to increase the understanding of this physical phenomenon by secondary students.
A low-cost non-conventional method for the determination of the Young modulus of the material of a cantilever
Authors: Biswas Subhrajyoti 
Published: July 2022

Abstract
In this article we present a simple technique for determination of the Young modulus of the material of a metallic ruler using it as a cantilever. This method employs with a slide potentiometer and a digital multimeter. The linear region of potentiometer resistance which is calibrated in terms of length has been used to record the load vs. resistance data. The value of the Young modulus determined from the linear least square fit to the load-resistance data and its value found comparable with the accepted value.
Transverse photonic crystal semiconductor laser arrays
Authors: Fu Ting , Chen Jingxuan , Fan Jian , Wang Yufei , Zhou Xuyan , Qi Aiyi , Wang Xueyou , Xing Xiaoxu , Wang Liang , Qu Hongwei , Dai Yingqiu , Wang Mingjin , Zheng Wanhua 
Published: July 2022

Abstract
Transverse photonic crystal (TPC) laser arrays are designed by effective index method and transfer matrix method, and fabricated by the process of standard photolithography. The fundamental supermode of the TPC laser array possesses a larger optical confinement factor in the active region than those of high-order supermodes, because the propagation constant of the fundamental supermode lies in the forbidden band of the TPC while all the propagation constants of the high-order supermodes lie in the allowed band of the TPC. Therefore, the fundamental supermode can lase firstly near the threshold when the laser is injected with currents. The fabricated TPC laser achieves a single-lobe horizontal far-field pattern under an injection current of 0.3 A, and the corresponding near-field pattern is well confined to the center five waveguides injected with currents. The TPC semiconductor laser array may be a good candidate for optical sources with narrow horizontal divergence angles.
Design and testing of a steering damper for motorcycles based on a shear-thickening fluid
Authors: Urda Pedro , Pérez Javier , Carabias Enrique , Cabrera Juan A , Castillo Juan J 
Published: July 2022

Abstract
This work is intended to show the feasibility of the utilisation of a shear-thickening fluid as working fluid in a steering damper for motorcycles. To that end, a prototype of a steering damper has been designed and then tested under different working conditions. Unlike conventional models, this new steering damper bases its performance on the combination of very simple rod geometries and a shear-thickening fluid of different concentrations. The experiments carried out with a test machine demonstrate that, despite its simplicity and reduced cost of manufacturing, the prototype shows similar behaviour to a conventional high-performance racing steering damper. The Bouc–Wen model has been used to reproduce the behaviour of the shear-thickening fluid-based damper prototype. The parameters of the model have been obtained following an optimization process to fit the model’s response to the experimental data when exciting the damper at different speeds. Results show that the damper’s behaviour can be properly modelled with a single combination of parameters.
Fragile topology in nodal-line semimetal superconductors
Authors: Wang Xiaoming , Zhou Tao 
Published: July 2022

Abstract
The fragile topological phase is an exotic phase with unstable edge states. Its nontrivial band topology can be removed by coupling to additional topologically trivial bands. Here we reveal that the fragile band topology can be realized in the inversion symmetric odd parity superconducting nodal line semimetal (SC-NLSM) materials with and without the spin orbital coupling. Without the spin orbital coupling, both the s-wave SC-NLSM and the p-wave SC-NLSM host a pair of Majorana zero modes on the system surface. For the spinful case, it has fourfold inverted bands and generates fourfold degenerate Majorana surface/edge states. However, we verify that for all of the systems we considered, they belong to the fragile topological superconducting system based on the Wilson loop method. The vortex bound states are studied numerically and the results depend strongly on the systems.
Static and dynamic magnetic behaviors of two trimer-decorated graphene-like nanoparticles
Authors: Hu Jin-Qiu , Jiang Yi-Bin , Jiang Wei 
Published: July 2022

Abstract
The mixed spin-5/2 and 1 Ising model is presented for describing two trimer-decorated graphene-like nanoparticles. The magnetic behaviors of the two models are studied using an effective field theory with correlations. Some features are found when the typical parameters, such as, simultaneous transverse magnetic field and anisotropy are considered. The possibility of stable and unstable magnetizations are judged by the lowest energy principle. The compensation and multiple phase temperatures for the magnetization curves depend on various physical parameters. The dynamic magnetic behavior of the system is reported in the periodically oscillating magnetic field.
The Effect of Variation Calcination Temperature of Polystyrene/Tetrahydrofuran (PS/THF) Hydrophobic Layers on Contact Angle and The Compressive Strength of Cement Mortar
Authors: Syaputri Oktaviani , Ratnawulan  , Septiana Delvi , Salam Muhammad 
Published: July 2022

Abstract
Infrastructure development in Indonesia continues to increase, this can be seen from the increasing number of buildings and housing. The house is an important building for humans, one of the important parts of the house is the walls made of bricks and covered with plaster. Its function, which can be used as plaster on walls, makes the authors use mortar as a sample in this study. The drawback is that the existing mortar is easy to grab because it absorbs water. Therefore, the author wants to make a waterproof mortar by providing a hydrophobic layer. This study aims to obtain the optimum value of the contact angle and compressive strength by varying the temperature as the independent variable used, namely 30°C, 60°C, 90°C, 120°C and 150°C. The results showed that the optimal contact angle was 120.7053° with a compressive strength of 258.19 kg/cm2. The temperature calcination relationship with the contact angle and compressive strength of mortar, is the higher the temperature. The temperature relationship with the contact angle and compressive strength of cement mortar is higher than the temperature.
Evaluation of GPM IMERG Products for Extreme Precipitation over Indonesia
Authors: Ramadhan Ravidho , Muharsyah Robi , Marzuki  , Yusnaini Helmi , Vonnisa Mutya , Hashiguchi Hiroyuki , Suryanto Wiwit , Sholihun  
Published: July 2022

Abstract
Accurate information on extreme rain is essential for vulnerability analysis and early warning systems of hydrometeorological disasters. One newly launched satellite that can provide information about extreme precipitation is the Global Precipitation Measurement (GPM), which produces half-hour grid data through the Integrated Multi-Satellite Retrieval for GPM (IMERG) system. This work evaluates the performance of IMERG data to measure extreme precipitation indices over Indonesia. Three types of GPM IMERG data: IMERG-Early, IMERG-Late, and IMERG-Final, were validated by rain gauge data in Indonesia for extreme rain indices from 2016 to 2019. Overestimated values for extreme precipitation indices were dominated by low-intensity precipitation such as PRCPTOT, R1mm, and CDD indices. On the contrary, underestimated values of extreme precipitation indices dominated by high-intensity precipitation such as R90p, R95p, R50mm, and RX1day indices. Moreover, the different types of IMERG data showed a similar pattern with slightly different values for identifying extreme precipitation indices. Thus, a more comprehensive study is needed to improve GPM IMERG in observing the extreme precipitation over Indonesia.
Effect of The Composition of Hydrophobic Agents on The Contact Angle and Strength of Mortal Cement
Authors: Salam Muhammad , Rokhmat Mamat , Rustam Rusnardi 
Published: July 2022

Abstract
Mortar cement resistance has serious economic implications in the form of maintenance costs and replacement of a structure. Therefore it is necessary to make cement mortar that is waterproof or hydrophobic. The purpose of this study was to look at the effect of the composition of hydrophobic agents on the large contact angle and strength of mortal cement. The hydrophobic agent used is Tetrahydrofuran (THF) with polyurethane (PU) with variations of 5:6molar, 1:10molar, 1:10.9 molar with total each variation being 11 molars. The control variables in this study are the amount of composition of otawa sand, aquades and silica sand 20-30 mesh which is 4:11:2 mold 5 cm x 5cm cement mortar cubes, long immersion with Ca(OH)2 10% for 7 days, temperature 60 °C and heating length 1 hour. The large angle of contact is measured using the caessyal drop method and the hardness value using the hardness vickers tool. The results showed that the higher the concentration of Polyuteran, the smaller the contact angle of mortar cement produced. The largest contact angle occurs at the concentration of THF variation: PU 6:5 mol. The optimum contact angle is 126° and the mortal seemen are hydrophobic.
Volleyball Smash Test Instrument Design With Sensor Technology
Authors: Komaini Anton , Illahi Faradilla Dinil , Gusril  , Sin Tjung Hauw , Handayani Sri Gusti , Yohandri  , Ayubi Novadri 
Published: July 2022

AbstractThis study aims to make a prototype of a sensor-based Smash Athlete volleyball skill test instrument. This research is a type of development research with a model design adapted from Borg & Gall. Validation is carried out by experts who are competent in their fields. In this study, the researchers asked for validation from three experts, namely Evaluation and Measurement Test experts, Volleyball Experts, and Media/IT Experts.20 adult males were enrolled to test this tool. The usage trial was carried out using the expert validity method with an assessment using a questionnaire, test and retest. Data analysis in this study was carried out using the r-correlation method. Based on the expert validation test, the percentage results from Evaluation and Measurement Test experts (96%), Volleyball Experts (92%), Media/IT Experts (94%). The average percentage of all experts is 94%. In the reliability test, the correlation coefficient was 0.999 which was included in the very strong category. So that the Volleyball Smash Test Instrument Design With Sensor Technology is good for measuring volleyball smash skills.
Analysis of Isothermal Remanent Magnetization (IRM) data of Brantas river sediments using IRMITS program
Authors: Ramadhan Djody Virgiawan , Purba Theresia Romauli , Nabilah Feninda Amalia , Mariyanto Mariyanto 
Published: July 2022

AbstractPollution is one of the big problems of continuous pollution in the Brantas River. The type of pollution that occurs in the sediment of a river is associated with the characteristics of its magnetic mineral. This study aims to determine the types of magnetic minerals in the Brantas River sediments. IRM data was taken from the measurement results in the Brantas River sediments. In this study, the IRMITS program is used to provides a deeper and better analysis and interpretation. From the processing results, IRMITS produces 3 graphs, namely the Linear Acquisition Plot (LAP) curve (b) the Gradient Acquisition Plot (GAP) curve; (c) Standardized Acquisition Plot (SAP) curve. From this study that has been done, it shows that magnetic minerals in the Brantas River are saturated in magnetic fields above 800mT with permanent coercivity occurring in the range 12-13 x 10−3and z value 0 before saturation occurs. This indicates that most of the Brantas River sediments is dominated by magnetite minerals (Fe3O4).
Tourist Counter Design Using RFID Sensors For Real Time Monitoring
Authors: Sentosa Media , Yohandri  
Published: July 2022

Abstract
In this paper, we present a design for calculating the number of visitors to a tourist attraction. The tourism sector has a positive impact on national economic development. In an effort by the government to increase tourism potential, data on the number of visitors who visit a tourist attraction is needed. In this prototype, the number of tourists will be counted at the entrance using RFID. The controller unit (Node-MCU) will receive and process the incoming data and then classify it into adult local tourists, adult foreign tourist, child local tourists and child foreign tourist. Google Sheets are used to store data from the controller over a long period of time and provide results and records of daily visitors. Recording time on Google Sheets is delayed 3-4 seconds in good signal conditions, and 7-10 seconds on a bad signal conditions. This system provides accurate results about the number of tourists of a tourist attraction.
Application of seismic refraction method to identify rock layers around the lake body in Jakarta, Indonesia
Authors: Aisyah Rizha Rizky , Yulianita Dina , Wafi Abdurrahman , Setiawan Nugroho Syarif , Mariyanto Mariyanto 
Published: July 2022

Abstract
The objective of this study was to identify the lithological layer around the lake body to determine the ability of the reservoir body structure to withstand surrounding seepage water. This research was conducted using the MAE X820S seismic instrument, carried out on a 46-meter-long track and 24 geophones. Seismic refraction processing is done by picking at the first break in each seismic trace. From the picking results, distance and time parameters will be obtained so that a seismic velocity model can be generated to be analyzed for lithological types based on the P-wave velocity. The results of the processing show that this research area consists of two rock layers. The range of P wave velocity owned by the first layer at a depth of 0-19 m is 648.11 m/s, interpreted as sand-gravel. The range of P wave velocity owned by the first layer at a depth of 19-30 m is 1553.21 m/s, interpreted as a layer of clay. Rock layers that have a sand-gravel lithology have the ability to seep or pass water, while layers that have a clay lithology cannot pass water. Therefore, the first layer is thought to have a less strong ability to withstand surrounding seepage water.