bluuebunny/crossref_metadata_2025_split huggingface dataset:
Intelligent Control Systems for Fault Detection and Diagnostics in Mechatronic Systems
Authors: Dhiman Tarun Kumar 
Published: June 2023

Intelligent control systems have emerged as a promising solution for fault detection and diagnostics in mechatronic systems. With the increasing complexity of modern mechatronic systems, the ability to identify and diagnose faults in real-time has become critical for ensuring efficient and reliable operation. This abstract presents an overview of intelligent control systems for fault detection and diagnostics in mechatronic systems, highlighting their key features, benefits, and applications. The main objective of intelligent control systems is to enhance the performance and robustness of mechatronic systems by continuously monitoring their behaviour and identifying potential faults. These systems leverage advanced techniques such as machine learning, artificial intelligence, and data-driven approaches to analyse the system's operational data and detect anomalies that may indicate the presence of faults. By employing intelligent algorithms, these systems can not only identify faults but also provide diagnostic information to localize and classify the detected faults.
In the outcome, intelligent control systems offer significant advantages in fault detection and diagnostics for mechatronic systems. Their ability to adapt and learn from the system's behaviour, combined with advanced machine learning and data-driven techniques, enables accurate and timely detection of faults. These systems have broad applications in robotics, manufacturing, automotive, and aerospace systems, where they play a crucial role in maintaining system performance, safety, and reliability. Future research in this field will focus on improving the efficiency, scalability, and interpretability of intelligent control systems for fault detection and diagnostics in mechatronic systems.
EXPERIMENTAL STUDY OF SURFACE ROUGHNESS IN VIBRO-IMPACT CUTTING OF OPTICAL SLUGS
Authors: Lengerov Angel , Sabev Sabi , Paliiski Stoyan 
Published: June 2023

In the article, experimental studies were carried out with the aim of determining the influence of different modes of vibro-impact cutting modes of optical slugs on the roughness of obtained surfaces. From the results obtained during the measurements and their mathematical processing are evaluated the average sizes and intervals and the parameters of the roughness of treated surfaces.
Site response from ambient noise measurements: New perspectives from an array study in Central Italy
Authors: Milana G. , Barba S. , Del Pezzo E. , Zambonelli E. 
Published: June 2023

Abstract
In this study, we used both spectral and array techniques to investigate microtremor characteristics in an urban area in Central Italy and to relate them to the properties of shallow geological structures.
We made noise measurements for sites located on the various surface geological conditions that can be found in the town of Rieti. Both sediments and bedrock are present at the surface, and the transition zone between them is very narrow and well localized. Using a small area reduced the effects related to the poor knowledge about the distribution of noise sources; using spectral ratio techniques, a good image of resonance frequencies on the alluvial sediments was obtained. Moreover, the use of an array allowed to describe better the morphology of the bedrock and to study Rayleigh-wave dispersion. Starting from the obtained surface-wave dispersion curve, we calculated a velocity model producing both a theoretical dispersion relationship and resonance frequencies for sedimentary layers in good agreement with experimental data.
Our work suggests that the use of array techniques can be very useful to increase the quality of microtremor data, giving new answers to microzoning problems.
Are Lg spectra from NTS explosions self-similar?
Authors: Jones Eric M. , Taylor Steven R. 
Published: June 2023

Abstract
Network-averaged Lg spectra for 106 underground Nevada Test Site (NTS) nuclear explosions (recorded at the four broadband seismic stations operated by Lawrence Livermore National Laboratory) are shown to be approximately self-similar and to scale with cavity radius and scaled-cavity radius. Composite spectra produced by superimposing the spectra of individual tests of nearly identical yields conducted in a single geologic unit (e.g., Tunnel Beds tuff, Yucca Flat, below the water table) have amplitude variability of about a factor of 2. If a master spectrum is chosen that resembles the shape of a particular subgroup of nearly identical NTS explosions, the spectra of all other tests in the database can be superimposed on the master spectrum through the application of a shot-specific amplitude shift and a shot-specific frequency shift. The amplitude shift basically measures the difference between the low-frequency asymptotes of the individual spectrum and the master spectrum, and the frequency shift measures the difference in corner frequencies. We show that, for explosions producing cavities with a narrow range of measured scaled-cavity radii, the amplitude shifts scale with cavity volume. Further, if cavity volume scaling is applied to the amplitude shifts, the residuals are shown to depend on scaled-cavity radius or gas-filled porosity. The residuals (a measure of seismic coupling) appear to show slightly reduced scatter when plotted versus scaled-cavity radius as opposed to gas-filled porosity. The frequency shifts scale approximately as cavity radius to the 3/4 power. Although the NTSLg spectra are approximately self-similar, differences in high-frequency decay and other shape parameters exist. For example, the rate of high-frequency decay is observed to progressively decrease as explosions approach the static water level from above. These differences do not have a significant effect on the connections established between the amplitude and frequency shifts with cavity radius and other source parameters but do suggest source differences of potential interest in discrimination studies.
Observation of shallow anisotropy on local earthquake records at the Garner Valley, Southern California, downhole array
Authors: Coutant Olivier 
Published: June 2023

Abstract
We study very shallow (&lt;200 m) S-wave anisotropy effects on local earthquake seismograms recorded by a vertical array of accelerometers at Garner Valley (Southern California). Using seismic events recorded by sensors buried at depth in the crystalline bedrock (220 m), in weathered crystalline rocks (22 m), and in sediments (15, 6, and 0 m), we analyze the S-wave vertical travel times and polarizations at different depths. Hodograms plotted for horizontal components at S onset exhibit a clear linear and constant polarization independent of both earthquake location and mechanism. This alignment varies with depth and is N 325° ± 13° at 220 m while N 25° ± 20° at 22, 15, 6, and 0 m. (a) For the deep propagation (&gt;220 m), the S-wave direction of polarization at 220 m is identical to the observation obtained on a crystalline outcrop at the KNW USGS stations, 7 km away. Studies conducted on this site concluded to a rock fabric anisotropy due to the alignment of minerals and/or microcracks along the lineation direction. (b) For the shallow (&lt;220 m) propagation, we observe a N 0° ± 20° fast-axis anisotropy with an 8 ± 2% magnitude between 220 and 22 m. The associated Sfast-Sslow travel-time delays roughly correspond to half the dominant period of the signal, and the subsurface linear polarization is interpreted as a degenerated ellipse. The north ± 20° anisotropy fast axis coincides with the maximum horizontal compressive stress associated with the San Andreas fault system. The shallow anisotropy extension corresponds to slow velocities associated with altered granite. It suggests either a stress-induced anisotropy due to pore/crack deformation in an altered (e.g., hydrothermally) medium, or the superposition of two crystalline units having different lineation directions. These data show that in presence of slow 0- to 200-m subsurface layers, shallow anisotropy strongly affects the earthquake surface records in the usual frequency range, below 30 Hz, used in short-period seismology.
Modeling of ground motion from a 1994 Northridge aftershock using a tomographic velocity model of the Los Angeles Basin
Authors: Haase Jennifer S. , Hauksson Egill , Vernon Frank , Edelman Adam 
Published: June 2023

Abstract
The 1994 Northridge mainshock and its aftershocks show a complex pattern of peak accelerations at stations located in the Los Angeles Basin. The waveforms contain multiples of body-wave phases and extensive surface waves at frequencies mostly below 1 Hz. In particular, for stations at distances greater than 18 km, secondary arrivals show larger accelerations than the direct S-wave arrivals. The mainshock waveforms are further complicated by irregularities of the source rupture. We use 2D finite difference to evaluate the effect of lateral variations in seismic velocity on the amplitude of shear-wave energy and to distinguish the effects of source and propagation path. We model waveforms from one aftershock recorded at nine stations deployed along a 60-km-long profile extending into the Los Angeles Basin. We use a two-dimensional slice through the 3D tomography model of the Los Angeles Basin in the 2D finite-difference calculations. These synthetic waveforms fit the aftershock waveforms significantly better than corresponding waveforms determined from simple 1D velocity models. With the addition of a thin low-velocity surface layer above the tomography model, the finite-difference synthetics reproduce most of the important features of the recorded data, in particular, the large-amplitude arrivals 7 to 10 sec following the direct S arrival. These arrivals correspond to the SS arrival, which is sharply refracted at the basin edge, and the S-wave with multiple legs trapped by the dipping near surface gradient. For large earthquakes located either inside or outside the basin, these phases can be the cause of the largest and hence potentially most hazardous shaking in the Los Angeles Basin.
Provisional seismic zoning for ground failures in portions of Los Angeles and Ventura counties following the 17 January 1994 Northridge earthquake
Authors: Real Charles R. , DeLisle Mark J. , McCrink Timothy 
Published: June 2023

AbstractProvisional seismic hazard zones for earthquake-induced ground failures have been delineated for portions of the three-county area most affected by the Northridge earthquake using a simplified hazard assessment methodology. The procedure integrates surface geology, topography, and groundwater information using GIS technology. While not a replacement for “official” seismic hazard zones, which are based on a more detailed and comprehensive analysis of hazard, these provisional zones will assist in the immediate and cost-effective distribution of postearthquake hazard mitigation funds.
Landslides triggered by the 1994 Northridge, California, earthquake
Authors: Harp Edwin L. , Jibson Randall W. 
Published: June 2023

Abstract
The 17 January 1994 Northridge, California, earthquake (Mw = 6.7) triggered more than 11,000 landslides over an area of about 10,000 km2. Most of the landslides were concentrated in a 1000-km2 area that included the Santa Susana Mountains and the mountains north of the Santa Clara River valley. We mapped landslides triggered by the earthquake in the field and from 1:60,000-nominal-scale aerial photography provided by the U.S. Air Force and taken the morning of the earthquake; these mapped landslides were subsequently digitized and plotted in a GIS-based format. Most of the triggered landslides were shallow (1- to 5-m thick), highly disrupted falls and slides within weakly cemented Tertiary to Pleistocene clastic sediment. Average volumes of these types of landslides were less than 1000 m3, but many had volumes exceeding 100,000 m3. The larger disrupted slides commonly had runout paths of more than 50 m, and a few traveled as far as 200 m from the bases of steep parent slopes. Deeper (&gt;5-m thick) rotational slumps and block slides numbered in the tens to perhaps hundreds, a few of which exceeded 100,000 m3 in volume. Most of these were reactivations of previously existing landslides. The largest single landslide triggered by the earthquake was a rotational slump/block slide having a volume of 8 × 106 m3. Analysis of the mapped landslide distribution with respect to variations in (1) landslide susceptibility and (2) strong shaking recorded by hundreds of instruments will form the basis of a seismic landslide hazard analysis of the Los Angeles area.
Evaluation of Students Industrial Practices Implementation and Work Readiness in Computer and Network Engineering Expertise Program at Blitar Vocational High School
Authors: Pramisti Silvina , Sutikno Tri Atmadji , Awang Halizah Binti 
Published: June 2023

The purpose of this study was to evaluate the implementation of industrial practices and student work readiness using the Context, Input, Process, Product (CIPP) model. The method used is the Mix Method. The context variable evaluates the needs of students in carrying out industrial practices, the input variable evaluates the readiness of students in carrying out prakerin, the process variable evaluates the implementation of students in carrying out industrial practices, the product variable evaluates the results of industrial practices. In the work readiness variable, the thing that is evaluated is the students' work readiness after carrying out industrial practice activities. Data collection techniques used are observation, interviews, questionnaires, and documentation. From the results of the research conducted, from the variables of the implementation of industrial practices (context, input, process, and product) and work readiness, a percentage of better than 50 is obtained which can be categorized as "good".
Learning Sets Knowledge Effect on Confidence Level in Teaching of Informatics Education Students
Authors: Triyandari Yenny , Soraya Dila Umnia , Ahmad Azhar 
Published: June 2023

This research is motivated by students as well as personal writers who have problems when carrying out teaching practice activities at school, one of which is the lack of student self-confidence caused by a lack of knowledge regarding the learning sets that will be used in teaching. The objectives of this research include; (1) knowing the description of knowledge of the 2016 PTI student learning sets; (2) knowing the description of self-confidence in teaching PTI students’ class of 2016; (3) knowing the relationship between knowledge of learning sets with confidence in teaching PTI students’ class of 2016; and (4) knowing the contribution of knowledge of learning sets to self-confidence in teaching Informatics Engineering Education students’ class of 2016. The research design used is descriptive quantitative research. The sample in this study amounted to 74 respondents obtained based on simple random sampling technique. The research instrument used tests and questionnaires. The results of this study indicate that; (1) Students who have a very high knowledge of learning sets are 43.2 percent, students who have a high knowledge of learning sets are 52.7 percent, and students who have low knowledge are 4.1 percent, (2) students have confidence self-confidence in teaching is high at 94.6 percent and students have high self-confidence in teaching at 5.4 percent, (3) There is a significant relationship between knowledge of Learning Sets and Confidence in Teaching at State University Informatics Engineering Students Malang, (4) the contribution of variable X to variable Y is 33.2 percent and the rest is influenced by other factors not mentioned in the study
Game-Based Learning Media Development with Role-Playing Game Mechanism in Basic Programming
Authors: Afandi Mochammad Fachrizal , Hidayat Wahyu Nur , Komariyah Kokom 
Published: June 2023

Learning activities for students in the current era, especially in productive subjects, must be interesting, innovative, and fun. In order to realize this, one of the efforts that can be done is to use appropriate media. The results of observations made by the author at SMK Negeri 1 Kepanjen showed that students claimed to lack understanding of productive materials, especially in basic programming subjects. At the time of delivery of material, educators often use media that are less interactive, so students are quickly bored. Therefore, to overcome the problems that have been explained previously, the author develops a game based learning (educational game) that uses the Role Playing Games (RPG) mechanism as a learning medium. This study aims to determine the feasibility of the educational game developed by the author. The author develops an educational game that uses the Role Playing Games (RPG) mechanism in basic programming subjects. This research uses the Addie research model according to what Branch (2009). The trial subjects of this study include material experts, media experts, and also students of class X RPL and X TKJ at SMK Negeri 1 Kepanjen. Educational game learning media developed have been through validation from media experts and material experts, and a trial has been tested on small group users and large groups. From various validation and testing results, this learning media received a percentage of 87.3 percent of 93.7 percent media experts from mater experts, 94.3 percent of small group trials, and 90.1 percent of large group trials. The percentage results obtained through validation and trials as a whole are classified in the very valid and very feasible category. So it can be concluded that the media based learning using the Role Playing Games (RPG) mechanism is very valid and feasible to be used in learning activities
ST266 inhibits neointimal hyperplasia after arterial balloon injury in rats
Authors: Cheng Xin-Meng , Yang Tao , Zi Yan , Zhang Li-Kui , Yang Ling-Bo , Wang William , Wang Xue-Ning 
Published: June 2023

Objective To examine the effect of Human Amnion-Derived Multipotent Progenitor (AMP) cells and their novel ST266 secretome on neointimal hyperplasia after arterial balloon injury in rats.Material and Methods Sprague-Dawley male rats were randomly divided into four groups (n=7): Control (PBS) group, systemic ST266 group, systemic AMP group and local AMP implant group. Neointimal hyperplasia was induced in the iliac using a 2F Fogarty embolectomy catheter. After surgery, the rats in the ST266 group were treated with 0.1, 0.5, or 1ml ST266 iv daily. In the systemic AMP groups, a single dose (SD) of 0.5 ×106 or 1×106 AMP cells was injected via the inferior vena cava after arterial balloon injury. In local AMP implant groups, 1×106, 5×106, or 20×106 AMP cells were implanted in 300 µl Matrigel (Mtgl) around the iliac artery after balloon injury. The iliac arteries were removed for histologic analysis at 28 days after the surgery. Re-endothelialization index was measured at 10 days after balloon injury.Results ST266 (1 ml) group had a lower level of the Neointima / Neointima+Media ratio (N / N+M) 0.3±0.1 vs 0.5±0.1, p=0.004) and luminal stenosis (LS) percentage (18.2±1.9 % vs 39.2±5.8 %, p=0.008) compared with the control group. Single-dose AMP (1×106) decreased LS compared to the control group (19.5±5.4 % vs 39.2±5.8 %, p=0.033). Significant reduction in N / N+M were found between implanted AMPs (20×106) and the control group (0.4±0.1 vs 0.5±0.1, p=0.003) and the Mtgl-only group (0.5±0.1, p=0.007). Implanted AMPs (20×106) decreased the LS compared with both the control (39.2±5.8 %, p=0.001) and Mtgl-only group (37.5±8.6 %, p=0.016). ST266 (1 ml) significantly increased the re-endothelialization index compared to the control (0.4±0.1 vs 0.1±0.1, p=0.002).Conclusion ST266 and AMP cells reduce neointimal formation and increase the re-endothelialization index after arterial balloon injury. ST266 is potentially a novel, therapeutic agent to prevent vascular restenosis in human.
Intrinsic laryngeal lipoma: a case report
Authors: Agarwal Shubham , Sharma Shivam , Singhal Pawan , Gupta Nishant 
Published: June 2023

Lipomas are the most common subcutaneous tumors. Intralaryngeal lipoma comprises 0.1% of all benign laryngeal tumors. Slow and insidious growth, for a long time; these may give rise to symptoms due to physical discomfort due to their size and compression on surrounding structures. Lipomas are benign mesenchymal tumors with rare localization in the upper aero-digestive tract. Intralaryngeal lipoma may present with clinical features including; feeling of a lump in the throat, cough and airway obstruction, stridor and dyspnea on exertion or even at rest may be present in more severe cases. We present a case of a 32 years old male patient with the complaint of gradually change of voice and dysphagia and difficulty in breathing on extreme physical activity for 5 months. Total removal of these lesions is important to avoid recurrences, a possibility that has been described in the Literature. The possibility of recurrence after long free-intervals should be borne in mind; thus, an extended period of long-term follow-up is mandatory.
O Sistema Eletrônico de Informações (SEI)
Authors: Garcia Ana Carolina dos Santos , Sayão Luis Fernando , Silva Margareth 
Published: June 2023

Introdução: Esta pesquisa tem por objetivo apresentar as avaliações desenvolvidas pelo Arquivo Nacional e pelo Ministério da Economia a respeito do Sistema Eletrônico de Informações (SEI), os quais utilizaram como referência os requisitos do e-ARQ Brasil: modelo de requisitos para sistemas informatizados de gestão arquivística de documentos do Conselho Nacional de Arquivos. Objetivo: Realizar uma análise comparativa das avaliações desenvolvidas pelo Arquivo Nacional e pelo Ministério da Economia sobre o Sistema Eletrônico de Informações (SEI), segundo os requisitos do e-ARQ Brasil. Metodologia: O estudo apresenta uma abordagem qualitativa, de caráter exploratório e descritivo com pesquisa bibliográfica. Resultados: Foram abordados os conceitos clássicos da Arquivologia, como também o referencial teórico apresentado pela publicação e-ARQ Brasil. Conclusão: Nossa pesquisa compara as análises realizadas por essas duas instituições, e constatou que, apesar de ambas usarem como referência o e-ARQ Brasil, verificamos que as avaliações chegaram a resultados divergentes ao concluírem se o SEI é, ou não, um sistema informatizado de gestão arquivística de documentos (SIGAD), capaz de assegurar que os documentos digitais permaneçam autênticos durante o seu ciclo de vida.