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Journal articles on the topic 'Stack trace'

Author: Grafiati

Published: 4 June 2021

Last updated: 26 July 2025

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1

Chen, Jing. "Specular ray parameter extraction and stationary‐phase migration." GEOPHYSICS 69, no. 1 (2004): 249–56. http://dx.doi.org/10.1190/1.1649392.

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The Kirchhoff‐type prestack depth migration operator is a diffraction stack of seismic reflection energies over seismic traces. Typically, the diffraction stack is carried out over the full data aperture, producing not only images of reflectors but also aliasing artifacts. Aliasing artifacts often break reflector continuity in images. The stationary‐phase approximation to the migration operator shows that, for image points on reflectors, traces within the neighborhood of specular rays contribute most to the diffraction stack. Traces outside this vicinity introduce aliasing artifacts into the i

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Schoenberger, Michael. "Optimum weighted stack for multiple suppression." GEOPHYSICS 61, no. 3 (1996): 891–901. http://dx.doi.org/10.1190/1.1444014.

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In water deeper than about 300 m, common midpoint stack is moderately effective at suppressing multiple reflections. The stacking process acts as a low‐pass multiple filter, rejecting, to some extent, frequencies greater than the reciprocal of the multiple’s residual moveout on the farthest offset trace. A weighted stack can often be even more effective at attenuating multiples, if the weights are chosen such that the multiple filter response has low amplitudes at those frequencies where the multiple is strong. A least‐squares technique is developed to determine optimum weights, based on the m

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NOVOTNY, M. "TRACE INTERPOLATION BY SLANT-STACK MIGRATION1." Geophysical Prospecting 38, no. 8 (1990): 833–51. http://dx.doi.org/10.1111/j.1365-2478.1990.tb01877.x.

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Rasuli, Sistan, Kjell Buehler, Kerstin Witte-Bodnar, Volker Naumann, Stephan Schoenfelder, and Klemens Ilse. "Magnetic Field Analysis for State of Health Monitoring of PEM Electrolyzer Stacks." ECS Meeting Abstracts MA2024-02, no. 45 (2024): 3096. https://doi.org/10.1149/ma2024-02453096mtgabs.

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The expected increase in the number of installed PEM electrolyzers during their industrialization in the upcoming years highlights the need for suitable non-destructive diagnostic methods for state of health monitoring and anomaly detection to ensure reliability and durability while reducing lifetime costs. The inner electrical current density distribution significantly impacts the efficiency and lifetime of a PEM electrolyzer stack. During operation, various degradation phenomena and inhomogeneities, including inhomogeneous water and cooling management, starvation effects, contact pressure, a

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5

Martinson, Douglas G., and John R. Hopper. "Nonlinear seismic trace interpolation." GEOPHYSICS 57, no. 1 (1992): 136–45. http://dx.doi.org/10.1190/1.1443177.

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The nonlinear correlation technique has been used to guide a seismic trace interpolant to fill gaps in seismic surveys, replace noisy traces, and produce evenly spaced arrays. Given an initial alignment (NMO correction for prestack data and manually inserted correlation lines for post‐stack data), the correlation aligns corresponding features between adjacent seismic traces and quantifies the traveltime difference between the traces on a point‐for‐point basis. This information is used to construct synthetic (interpolated) traces, at any arbitrary distance between the correlated traces, which p

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Bagaini, Claudio. "Performance of time-delay estimators." GEOPHYSICS 70, no. 4 (2005): V109—V120. http://dx.doi.org/10.1190/1.1996909.

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I analyze the problem of estimating differences in the arrival times of a seismic wavefront recorded by an array of sensors. The two-sensor problem is tackled first, showing that even an approximate knowledge of the wavelet, such as its power spectrum, can substantially increase the accuracy of the time-delay estimate and reduce the signal-to-noise ratio (S/N) threshold for reliable time-delay estimation. The use of the complex trace, although beneficial for time-delay estimates in the presence of frequency-independent phase shifts, reduces the estimation accuracy in poor S/N conditions. I com

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Xaba, Mandla, Joshua Olowoyo, and Gregory Scott. "Trace Metal Deposition on Soil and Accumulation in Plants around a Coal Power Station in Pretoria, South Africa." Journal of Environmental Science and Management 21, no. 2 (2018): 23–29. http://dx.doi.org/10.47125/jesam/2018_2/04.

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Combustion of coal in power stations is one of the main sources of environmental pollution due to the generation of trace metals. This study investigated levels of trace metals from five different plants and soils around a coal-fired power station in Tshwane, South Africa. Plants and soil samples were collected from different points (10, 500 and 750 m) along different directions (North West, North East, South West and South East) and analyzed for metals contents using Inductive Couple Plasma–Optical Emission Spectrophotometer (ICP-OES). A significant increase in the concentration of trace meta

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Sedek, Mohamed, and Lutz Gross. "Automatic NMO correction in anisotropic media and non-hyperbolic NMO velocity field estimation." APPEA Journal 56, no. 2 (2016): 592. http://dx.doi.org/10.1071/aj15098.

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The authors propose a new method to automatically normal move-out correct pre-stack seismic reflection data that is sorted by CDP gathers, and to estimate the normal move-out (NMO) velocity (Vnmo) as a full common depth point (CDP) velocity field that instantaneously varies with offsets/azimuths. The method is based on doing a pre-defined number of NMO velocity iterations using linear vertical interpolation of different NMO velocities at each seismic trace individually. At each iteration the seismic trace is shifted and multiplied by the zero offset trace followed by the summation of the produ

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Rohith Samudrala, Lakshmi Narasimha. "Correlating Logs, Metrics, and Traces for Full-Stack Observability." International Journal of Multidisciplinary Research and Growth Evaluation 2, no. 4 (2021): 907–10. https://doi.org/10.54660/.ijmrge.2021.2.4.907-910.

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Logs, Metrics, and Traces serve as three pillars of observability. Each providing unique and valuable information, but the true power of these pillars can only be realized when correlating them. When correlated the three pillars provide a unified, contextualized view of system behavior, essential for detecting performance bottlenecks, debugging failures, and optimizing service reliability. This paper talks about the importance of full-stack observability and explores how logs, metrics, and traces can be correlated with examples. The paper further examines the challenges organizations face, suc

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Uren, N. F., G. H. F. Gardner, and J. A. McDonald. "Dip moveout in anisotropic media." GEOPHYSICS 55, no. 7 (1990): 863–67. http://dx.doi.org/10.1190/1.1442901.

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When a common‐midpoint gather is collected above a dipping reflector, the point at which reflection occurs moves updip as the source‐receiver offset increases. Stacking velocity is constant, but it is a function of dip. Hence a stacked trace is not equivalent to a zero‐offset recorded trace. Dip moveout (DMO) is a processing step which converts traces to the equivalent of true zero‐offset records, making migration after stack (MAS) equivalent to migration before stack (MBS). The theory of velocity‐independent Gardner DMO is extended to triaxially elliptically anisotropic media in this paper. I

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Tian, Xiao, Wei Zhang, Xiong Zhang, et al. "Comparison of Single-Trace and Multiple-Trace Polarity Determination for Surface Microseismic Data Using Deep Learning." Seismological Research Letters 91, no. 3 (2020): 1794–803. http://dx.doi.org/10.1785/0220190353.

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Abstract For surface microseismic monitoring, determination of the P-wave first-motion polarity is important because (1) it has been widely used to determine focal mechanisms and (2) the location accuracy of the diffraction-stack-based method is improved greatly using polarization correction. The convolutional neural network (CNN) is a form of deep learning algorithm that can be applied to predict the polarity of a seismogram automatically. However, the existing network designed for polarity detection utilizes only individual trace information. In this study, we design a multitrace-based CNN (

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Salihu, Shakirat Aderonke, and Oluwakemi Christiana Abikoye. "An Enhanced Information Retrieval-Based Bug Localization System with Code Coverage, Stack Traces, and Spectrum Information." Journal of Hunan University Natural Sciences 49, no. 4 (2022): 108–24. http://dx.doi.org/10.55463/issn.1674-2974.49.4.12.

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Several strategies such as Vector Space Model (VSM), revised Vector Space Model (rVSM), and integration of additional elements such as stack trace and previously corrected bug report have been utilized to improve the Information Retrieval (IR) based bug localization process. Most of the existing IR-based approaches make use of source code files without filtering, which eventually increases the search space of the technique, thereby slowing down the bug localization process. This study developed an enhanced IR-based bug localization model as a viable solution. Specifically, an enhanced rVSM (e-

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Wang, Yaojing, Yuan Yao, Hanghang Tong, et al. "Enhancing supervised bug localization with metadata and stack-trace." Knowledge and Information Systems 62, no. 6 (2020): 2461–84. http://dx.doi.org/10.1007/s10115-019-01426-2.

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Ma, Yue, Yi Luo, and Panos Kelamis. "Superresolution stacking based on sparse Radon transform." GEOPHYSICS 84, no. 1 (2019): V45—V54. http://dx.doi.org/10.1190/geo2017-0510.1.

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Normal moveout (NMO) correction is routinely applied to each common-midpoint (CMP) gather before forming a stack section. Trace stretching is inherent in the conventional NMO correction, causing frequency distortion and temporal resolution degradation in the stacked image. We have developed a novel method to compute a superresolution stack directly from CMP gathers by solving an optimization problem that leads to an [Formula: see text]-norm minimization of the model based on compressive sensing principles. Our algorithm is able to recover the superposition of signals in a specialized parallel-

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Zein, Emir Dzakwan Kamal, Syamsurijal Rasimeng, and Egie Wijaksono. "Combination of SRME And WEMR Seismic Noise Demultiple With CRS Stack Method." Jurnal Penelitian Fisika dan Aplikasinya (JPFA) 14, no. 2 (2024): 199–214. https://doi.org/10.26740/jpfa.v14n2.p199-214.

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Marine seismic data recordings consist of signals and various types of noise which can reduce the quality of the resulting data processing model. This research purpose to increase the signal to noise ratio of a 2D seismic cross-section using the demultiple and stacking methods. This research method applying the Common Reflection Surface (CRS) stack method with a combination of two seismic noise demultiple methods, namely Surface Related Multiple Elimination (SRME) and Wave Equation Multiple Rejection (WEMR) using ProMAX software. The CRS stack results has been proven to be able to eliminate ra

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Chintia, Bella, Okto Ivansyah, and Joko Sampurno. "Analisis Parameter Gap Dalam Tahapan Dekonvolusi Prediktif Guna Mereduksi Short Period Multiple dan Meningkatkan S/N Ratio pada Pengolahan Data Seismik Refleksi 2D Marine." POSITRON 7, no. 1 (2017): 24. http://dx.doi.org/10.26418/positron.v7i1.20783.

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Penelitian ini bertujuan untuk menentukan nilai gap terbaik dari salah satu parameter gap yang digunakan untuk mereduksi short-period multiple dengan metode dekonvolusi prediktif. Variasi Nilai gap yang digunakan adalah 4, 8, 12, 16, 20, 24, 28, dan 64 ms. Berdasarkan hasil penelitian, diketahui bahwa gap 12 merupakan gap terbaik. Nilai gap 12 menghasilkan sp gather, penampang stack dan NTG (Near Trace Gather) yang lebih tajam dibandingkan dengan gap lainnya. Selain itu, dari spectrum analysis didapatkan sp gather dan penampang stack yang menunjukkan bahwa frekuensi terletak pada rentang nilai

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Chen, Ning, and Sunghun Kim. "STAR: Stack Trace Based Automatic Crash Reproduction via Symbolic Execution." IEEE Transactions on Software Engineering 41, no. 2 (2015): 198–220. http://dx.doi.org/10.1109/tse.2014.2363469.

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Groves, Lindsay, and Robert Colvin. "Trace-based derivation of a scalable lock-free stack algorithm." Formal Aspects of Computing 21, no. 1-2 (2008): 187–223. http://dx.doi.org/10.1007/s00165-008-0092-5.

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Cieplicki, Robert, Leo Eisner, and Mike Mueller. "Moment and moment magnitude of seismic events located by stacking." GEOPHYSICS 79, no. 6 (2014): A57—A61. http://dx.doi.org/10.1190/geo2014-0179.1.

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Determination of moment and moment magnitude for seismic events located by stacking has been an unsolved problem because current methodologies cannot be applied. To solve this problem, we have developed a methodology for moment magnitude [Formula: see text] estimation of (micro) seismic events. Our method was designed for stacking waveforms. We found that magnitude can be determined from the stack of amplitudes corrected for radiation pattern and propagation effects such as geometric spreading, attenuation, and free-surface boundary. From the stack of corrected waveforms, we found the low-freq

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Nedimović, Mladen R., and Gordon F. West. "Crooked‐line 2D seismic reflection imaging in crystalline terrains: Part 1, data processing." GEOPHYSICS 68, no. 1 (2003): 274–85. http://dx.doi.org/10.1190/1.1543213.

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For cost and access reasons, most of the seismic reflection data collected in crystalline terrains have been acquired by 2D crooked‐line profiling. When the survey geometry is significantly irregular and the geologic structures have cross‐profile dip, several standard 2D imaging procedures severely underperform. As a result, reflection signal is poorly aligned across individual common midpoint (CMP) gathers, and much is lost during the CMP stack. To improve imaging, either the methods used to align signal before stack need to be modified or more tolerant methods of combining trace signals than

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Kusuma, Guntoro Yudhy, and Unan Yusmaniar Oktiawati. "Application Performance Monitoring System Design Using Opentelemetry and Grafana Stack." Journal of Internet and Software Engineering 3, no. 1 (2022): 26–35. http://dx.doi.org/10.22146/jise.v3i1.5000.

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The increasingly massive use of digital technology requires that the application architecture be designed to have high availability and reliability. This is because when an application cannot be accessed, it will cause no small loss to the organization. Therefore, the development and operation teams must be able to detect when their system is not working well. For that, we need a system that can monitor application performance. In this research, a system is developed to collect telemetry data, namely metrics and traces from an online donation backend application based on the REST API. OpenTele

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Kong, S. M., Robert A. Phinney, and Kabir Roy‐Chowdhury. "A nonlinear signal detector for enhancement of noisy seismic record sections." GEOPHYSICS 50, no. 4 (1985): 539–50. http://dx.doi.org/10.1190/1.1441931.

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In an area of complicated structure a stacked record section is likely to be characterized by a low signal‐to‐noise ratio, even after substantial velocity analysis and other processing. The interpreter identifies signals showing phase coherence across many traces at physically allowable velocities and compiles them into a line drawing. We have developed a nonlinear filter designed to mimic this process, which passes only signals showing spatial coherence and having slowness within an allowed range. In this algorithm, called the “SSD filter,” overlapping M-trace windows are converted into a p-τ

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Taner, M. Turhan, and Fulton Koehler. "Estimation of unbiased delays." GEOPHYSICS 63, no. 2 (1998): 738–42. http://dx.doi.org/10.1190/1.1444373.

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A large number of exploration processing procedures need the solution to the problem stated as, “Given a set of seismic traces, determine the common element.” This element could be the seismic wavelet, as in a set of common‐shot traces or as in a set of stack traces that need to be matched with synthetic seismograms. It could also be a pilot trace representing a noise‐free estimate of traces in a common‐depth‐point (CDP) gather to be used during an automatic time and phase statics computation. Most present computations use iteratively improved estimates of one sort or another. They assume that

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Duncan, Guy, and Greg Beresford. "Slowness adaptive f-k filtering of prestack seismic data." GEOPHYSICS 59, no. 1 (1994): 140–47. http://dx.doi.org/10.1190/1.1443525.

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Frequency‐wavenumber velocity filtering is often applied to prestack seismic data for the attenuation of coherent noise. Although the process often gives excellent results, it can sometimes result in signal smoothing and distortion and poor attenuation of coherent noise. A slowness adaptive f-k filter reduces signal distortion and improves the attenuation characteristics of the filter. The technique uses a time‐ and space‐variant narrow reject‐band f-k filter. Optionally, coherent noise is compressed before application of the filter. The apparent slowness of coherent noise events is estimated

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Subarsyah, Subarsyah, and Yulinar Firdaus. "PERBAIKAN CITRA PENAMPANG SEISMIK MENGGUNAKAN METODE COMMON REFLECTION SURFACE : APLIKASI TERHADAP DATA SEISMIK PERAIRAN WAIGEO." JURNAL GEOLOGI KELAUTAN 13, no. 2 (2016): 119. http://dx.doi.org/10.32693/jgk.13.2.2015.267.

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Kenampakan struktur geologi dan kontinuitas reflektor pada penampang seismik seringkali tidak teridentifikasi ketika data seismik di stack menggunakan metode stacking konvensional, terutama untuk data dengan jumlah fold coverage yang kecil. Data seismik Puslitbang Geologi Kelautan yang diperoleh pada Mei 2015, di Perairan Timur Pulau Waigeo, memiliki fold coverage yang relatif rendah sekitar 20. Untuk meningkatkan kualitas penampang seismik pada data ini perlu diterapkan metode Common Reflection Surface(CRS) sehingga interpretasi struktur geologi lebih mudah dan kontinuitas reflektor lebih bai

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Yang, Ming, and Nikolaos Bourbakis. "ANALYSIS, MODELING AND SIMULATION OF NETWORK TRACES FOR VIDEO TRANSMISSION OVER IP NETWORKS." Journal of Integrated Design and Process Science: Transactions of the SDPS, Official Journal of the Society for Design and Process Science 13, no. 1 (2009): 15–32. http://dx.doi.org/10.3233/jid-2009-13102.

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In the best-effort IP network, quality of service (QoS) cannot be guaranteed, and thus packets could possibly be delayed or lost. Packet delay/loss will inevitably degrade the perceptual quality of real-time multimedia-over-IP service, such as Voice-over-IP (VoIP), Video-on-Demand (VoD), etc. In general, packet loss/delay exhibits temporal dependence. In order to efficiently conduct error recovery/concealment and improve the perceptual quality of the transmitted multimedia contents, packet loss/delay has to be precisely modeled. Different mathematical models, such as Bernoulli Model, Gilbert M

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Dai, Ronghuo, and Jun Yang. "Amplitude-Versus-Angle (AVA) Inversion for Pre-Stack Seismic Data with L0-Norm-Gradient Regularization." Mathematics 11, no. 4 (2023): 880. http://dx.doi.org/10.3390/math11040880.

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Amplitude-versus-angle (AVA) inversion for pre-stack seismic data is a key technology in oil and gas reservoir prediction. Conventional AVA inversion contains two main stages. Stage one estimates the relative change rates of P-wave velocity, S-wave velocity and density, and stage two obtains the P-wave velocity, S-wave velocity and density based on their relative change rates through trace integration. An alternative way merges these two stages to estimate P-wave velocity, S-wave velocity and density directly. This way is less sensitive to noise in seismic data compared to conventional two-sta

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Trinks, Immo, and Alois Hinterleitner. "Beyond Amplitudes: Multi-Trace Coherence Analysis for Ground-Penetrating Radar Data Imaging." Remote Sensing 12, no. 10 (2020): 1583. http://dx.doi.org/10.3390/rs12101583.

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Under suitable conditions, ground-penetrating radar (GPR) measurements harbour great potential for the non-invasive mapping and three-dimensional investigation of buried archaeological remains. Current GPR data visualisations almost exclusively focus on the imaging of GPR reflection amplitudes. Ideally, the resulting amplitude maps show subsurface structures of archaeological interest in plan view. However, there exist situations in which, despite the presence of buried archaeological remains, hardly any corresponding anomalies can be observed in the GPR time- or depth-slice amplitude images.

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Papurello, Davide, Silvia Silvestri, and Stefano Modena. "Biogas trace compounds impact on high-temperature fuel cells short stack performance." International Journal of Hydrogen Energy 46, no. 12 (2021): 8792–801. http://dx.doi.org/10.1016/j.ijhydene.2020.11.273.

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Gallagher, Neal B., Barry M. Wise, and David M. Sheen. "Error Analysis for Estimation of Trace Vapor Concentration Pathlength in Stack Plumes." Applied Spectroscopy 57, no. 6 (2003): 614–21. http://dx.doi.org/10.1366/000370203322005283.

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Near-infrared hyperspectral imaging is finding utility in remote sensing applications such as detection and quantification of chemical vapor effluents in stack plumes. Optimizing the sensing system or quantification algorithms is difficult because reference images are rarely well characterized. The present work uses a radiance model for a down-looking scene and a detailed noise model for dispersive and Fourier transform spectrometers to generate well-characterized synthetic data. These data were used with a classical least-squares-based estimator in an error analysis to obtain estimates of dif

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Lynn, Walt, Mark Doyle, Ken Larner, and Richard Marschall. "Experimental investigation of interference from other seismic crews." GEOPHYSICS 52, no. 11 (1987): 1501–24. http://dx.doi.org/10.1190/1.1442268.

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In a study of the contamination of reflection seismic data by interfering noise from other seismic crews, controlled experiments were performed in the Gulf of Mexico and the North Sea. In each experiment, a survey ship traversed a line several times collecting both data free of and data contaminated by interfering crew noise. In the Gulf of Mexico experiment, the “noise” ship followed a prescribed course about 11 km from the survey ship. In the North Sea experiment, the noise ship was positioned at stationary locations 10 and 40 km broadside to the survey line. Recorded interference noise in b

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Pang, Ling, Cheng Qian, Xiaohui Kuang, Jiuren Qin, Yujie Zang, and Jiapeng Zhang. "Slicing Through the Noise: Efficient Crash Deduplication via Trace Reconstruction and Fuzzy Hashing." Electronics 13, no. 23 (2024): 4817. https://doi.org/10.3390/electronics13234817.

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In contemporary software security testing, fuzzing is a pervasive methodology employed to identify vulnerabilities. However, one of the most significant challenges is the vast number of crash reports, many of which are repetitive, resulting in an increased analysis burden for security researchers. To address this issue, we propose a novel method for reducing crash redundancy and grouping similar crashes based on their execution traces. By leveraging the Intel Processor Trace (PT), we can reconstruct the instruction flow of the last executed function in each crash and extract its relevant instr

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Chen, Yangkang, Weilin Huang, Yatong Zhou, Wei Liu, and Dong Zhang. "Plane-wave orthogonal polynomial transform for amplitude-preserving noise attenuation." Geophysical Journal International 222, no. 3 (2020): 1789–804. http://dx.doi.org/10.1093/gji/ggaa188.

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SUMMARY Amplitude-preserving data processing is an important and challenging topic in many scientific fields. The amplitude-variation details in seismic data are especially important because the amplitude variation is directly related with the subsurface wave impedance and fluid characteristics. We propose a novel seismic noise attenuation approach that is based on local plane-wave assumption of seismic events and the amplitude preserving capability of the orthogonal polynomial transform (OPT). The OPT is a way for representing spatially correlative seismic data as a superposition of polynomia

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Nedimović, Mladen R., and Gordon F. West. "Crooked‐line 2D seismic reflection imaging in crystalline terrains: Part 2, migration." GEOPHYSICS 68, no. 1 (2003): 286–96. http://dx.doi.org/10.1190/1.1543214.

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Seismic reflection surveys are frequently conducted over very complicated geological structure, but surveying often must be confined to existing crooked roads or tracks. Typically, data from such 2D crooked‐line surveys are processed using standard common midpoint (CMP) stacking techniques to obtain a 2D time section which is then 2D migrated. In Part I, we show that a reflector dip component across the processing line can cause serious problems for standard CMP stacking. We also propose a supplementary processing step in which cross‐dip is determined locally and cross‐dip moveout (CDMO) is re

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Ben-Zvi, David, David Nadler, and Anatoly Preygel. "A spectral incarnation of affine character sheaves." Compositio Mathematica 153, no. 9 (2017): 1908–44. http://dx.doi.org/10.1112/s0010437x17007278.

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We present a Langlands dual realization of the putative category of affine character sheaves. Namely, we calculate the categorical center and trace (also known as the Drinfeld center and trace, or categorical Hochschild cohomology and homology) of the affine Hecke category starting from its spectral presentation. The resulting categories comprise coherent sheaves on the commuting stack of local systems on the two-torus satisfying prescribed support conditions, in particular singular support conditions, which appear in recent advances in the geometric Langlands program. The key technical tools

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Hloušek, Felix, Michal Malinowski, Lena Bräunig, et al. "Three-dimensional reflection seismic imaging of the iron oxide deposits in the Ludvika mining area, Sweden, using Fresnel volume migration." Solid Earth 13, no. 5 (2022): 917–34. http://dx.doi.org/10.5194/se-13-917-2022.

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Abstract. We present pre-stack depth-imaging results for a case study of 3D reflection seismic exploration at the Blötberget iron oxide mining site belonging to the Bergslagen mineral district in central Sweden. The goal of the study is to directly image the ore-bearing horizons and to delineate their possible depth extension below depths known from existing boreholes. For this purpose, we applied a tailored pre-processing workflow and two different seismic imaging approaches, Kirchhoff pre-stack depth migration (KPSDM) and Fresnel volume migration (FVM). Both imaging techniques deliver a well

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Triyoso, Wahyu, and Sunawar Kunaifi. "Relative Amplitude Preservation Analysis on Interpolation Methods of The Unaliased F-K Trace Interpolation and Regularized Nonstationary Autoregression." Scientific Contributions Oil and Gas 46, no. 3 (2023): 51–62. http://dx.doi.org/10.29017/scog.46.3.1589.

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The seismic data interpolation method has been widely used to increase the fold coverage in seismic data processing. This technique can be applied to convert multi-2D lines into pseudo-3D, which is an alternative to obtaining 3D seismic volume data due to the relatively high acquisition cost. However, the quality of the seismic interpolation results is not the same as the real 3D seismic data acquisition results. This study carefully analyzed these differences to understand how accurate the results were. There are two methods used for data interpolation, namely Unaliased f-k trace interpolatio

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Tao, Shiping, Yintong Guo, Haoyong Huang, et al. "Deep-Learning-Based Amplitude Variation with Angle Inversion with Multi-Input Neural Networks." Processes 12, no. 10 (2024): 2259. http://dx.doi.org/10.3390/pr12102259.

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Deep-learning-based (DL-based) seismic inversion has emerged as one of the state-of-the-art research areas in exploration geophysics with the development of artificial intelligence technology. Due to its good portability and high computational efficiency, this method has emerged as a data-driven approach for estimating subsurface properties. However, most of the current DL-based methods rely solely on seismic data, lacking the incorporation of prior information. In addition, these methods are usually performed trace-by-trace, resulting in insufficient horizontal constraints. These limitations

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Long, R. P., and D. D. Davis. "Major and trace element concentrations in surface organic layers, mineral soil, and white oak xylem downwind from a coal-fired power plant." Canadian Journal of Forest Research 19, no. 12 (1989): 1603–15. http://dx.doi.org/10.1139/x89-243.

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White oak (Quercusalba L.) xylem tissues, associated mineral soils (0 to 25 cm), and surface organic layers (O2 horizon) were sampled downwind from a 623 MW coal-fired power plant to determine whether major or trace element concentration patterns were affected by changes in emission stack heights during a 32-year operating period. Four sites with Hazleton (Typic Dystrochrept) soils located at 0.25, 1.2, 2.0, and 10.3 km downwind from the power plant were sampled. In surface O2 layers, Fe and Co concentrations varied inversely with distance from the power plant. Inductively coupled plasma–atomi

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Ezzati-Jivan, Naser, Houssem Daoud, and Michel R. Dagenais. "Debugging of Performance Degradation in Distributed Requests Handling Using Multilevel Trace Analysis." Wireless Communications and Mobile Computing 2021 (November 16, 2021): 1–17. http://dx.doi.org/10.1155/2021/8478076.

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Root cause identification of performance degradation within distributed systems is often a difficult and time-consuming task, yet it is crucial for maintaining high performance. In this paper, we present an execution trace-driven solution that reduces the efforts required to investigate, debug, and solve performance problems found in multinode distributed systems. The proposed approach employs a unified analysis method to represent trace data collected from the user-space level to the hardware level of involved nodes, allowing for efficient and effective root cause analysis. This solution work

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Xie, Xin, Daofu Gong, Xiangyang Luo, Fenlin Liu, and Bin Lu. "Random table and hash coding-based binary code obfuscation against stack trace analysis." IET Information Security 10, no. 1 (2016): 18–27. http://dx.doi.org/10.1049/iet-ifs.2013.0137.

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Rasuli, Sistan, Kerstin Witte-Bodnar, Erik Grunwald, et al. "Using Magnetic Field Analysis for Localizing Defects of Fuel Cell & Electrolyzer Components." ECS Meeting Abstracts MA2023-02, no. 37 (2023): 1731. http://dx.doi.org/10.1149/ma2023-02371731mtgabs.

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Production capacities of electrolysis and fuel cell technologies are expected to increase significantly in the upcoming years, reducing costs of stack components through numbering-up. To ensure reliability and durability and reduce costs along the manufacturing process, developing suitable in-line non-destructive diagnostic methods for quality control becomes essential for their industrialization. In both fuel cell and electrolyzer stacks, the main components' electrical resistance and current density distribution greatly influence stack efficiency and longevity. Here, the flowing electric cur

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Zhang, Wenfang, Gaojun Li, and Jun Chen. "The application of Neodymium isotope as a chronostratigraphic tool in North Pacific sediments." Geological Magazine 157, no. 5 (2019): 768–76. http://dx.doi.org/10.1017/s001675681900089x.

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AbstractIt has been suggested that dust generation was closely linked to the development of global ice sheets and/or cooling. This feature has allowed Asian dust to be a potential chronostratigraphic tool in North Pacific Ocean (NPO) sediments. The orbital-scale age control in NPO sediments is usually established by adjusting the benthic-foraminiferal δ18O to the global δ18O stack (LR04). However, it would become difficult if the sediments did not contain enough foraminifera. This study investigates Sr and Nd isotopes, trace elements, mineralogy and grain size of the ‘operationally defined aeo

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Schäfer, Dominik, Larissa Queda, Volker Nischwitz, Qingping Fang, and Ludger Blum. "Origin of Steam Contaminants and Degradation of Solid-Oxide Electrolysis Stacks." Processes 10, no. 3 (2022): 598. http://dx.doi.org/10.3390/pr10030598.

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Two once-through steam generators and a combination of a steam generator and a gas preheater for supplying feed gases to solid-oxide electrolysis stacks were evaluated for their carryover characteristics of contaminants from the feed-water into the steam phase. The concentrations of various trace impurities in the steam were determined by sampling the steam condensates and screening them with inductively coupled plasma–mass spectrometry for 19 elements and liquid ion chromatography and continuous flow analysis for chloride and ammonium. Steam-soluble species such as boric acid undergo complete

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Baykulov, Mikhail, Stefan Dümmong, and Dirk Gajewski. "From time to depth with CRS attributes." GEOPHYSICS 76, no. 4 (2011): S151—S155. http://dx.doi.org/10.1190/1.3580607.

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A processing workflow was introduced for reflection seismic data that is based entirely on common-reflection-surface (CRS) stacking attributes. This workflow comprises the CRS stack, multiple attenuation, velocity model building, prestack data enhancement, trace interpolation, and data regularization. Like other methods, its limitation is the underlying hyperbolic assumption. The CRS workflow provides an alternative processing path in case conventional common midpoint (CMP) processing is unsatisfactory. Particularly for data with poor signal-to-noise ratio and low-fold acquisition, the CRS wor

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Li, Ye, Tingting Jiang, Qingqing Sun, Pengfei Wang, Shijin Ding, and Wei Zhang. "Optical properties of a HfO2/Si stack with a trace amount of nitrogen incorporation." Journal of Semiconductors 33, no. 3 (2012): 032001. http://dx.doi.org/10.1088/1674-4926/33/3/032001.

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Lei, Yuan, Li Lei, Lei Xia, et al. "Multi-channel DMA Based Design of Voltage Monitoring Using Synchronous Frequency Trace-Sampling Technique." Modern Electronic Technology 4, no. 2 (2020): 17. http://dx.doi.org/10.26549/met.v4i2.5692.

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In order to eliminate the influence of frequency change on real-time voltage acquisition, a low-cost solution of voltage monitoring was proposed using the multi-channel DMA synchronous frequency trace-sampling technique. In-chip resources of the designed voltage monitor were fully utilized in hardware design to reduce external devices. The MQX RTOS was used to perform the functional tasks flexibly and efficiently; especially the Ethernet communication applications and USB device connection were realized using its TCP/IP protocol stack and USB driver. In addition, to ensure the safety of electr

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Taimur, Asad, Akinniyi Akinsunmade, Sylwia Tomecka-Suchon, and Fahad Mehmood. "Frequency bandwidth enhancement using continuous wavelet transform and random noise attenuation by f-xy filtering technique – a case study from Badin oilfield, Indus basin, Pakistan." E3S Web of Conferences 133 (2019): 01007. http://dx.doi.org/10.1051/e3sconf/201913301007.

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Routine seismic data processing does not always meet the quantitative interpreters’ expectations especially in areas like Badin, where prospective thin bed B – sand interval is ambiguous throughout the seismic volume. Continuous Wavelet Transform (CWT) provides detailed description of seismic signal in both time and frequency without compromising on window length and a fixed time-frequency resolution over time-frequency spectrum. We present enhancement of seismic data for effective interpretation using the bandwidth extension technique. Implementing bandwidth extension, the dominant frequency

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Gülünay, Necati. "The diminishing residual matrices method for surface-consistent statics — A review." GEOPHYSICS 82, no. 4 (2017): V257—V274. http://dx.doi.org/10.1190/geo2016-0602.1.

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The diminishing residual matrices (DRM) method can be used to surface-consistently decompose individual trace statics into source and receiver components. The statics to be decomposed may either be first-arrival times after the application of linear moveout associated with a consistent refractor as used in refraction statics or residual statics obtained by crosscorrelating individual traces with corresponding model traces (known as pilot traces) at the same common-midpoint (CMP) location. The DRM method is an iterative process like the well-known Gauss-Seidel (GS) method, but it uses only sour

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Chaudouard, Pierre-Henri, and Gérard Laumon. "Le lemme fondamental pondéré. I. Constructions géométriques." Compositio Mathematica 146, no. 6 (2010): 1416–506. http://dx.doi.org/10.1112/s0010437x10004756.

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AbstractThis work is the geometric part of our proof of the weighted fundamental lemma, which is an extension of Ngô Bao Châu’s proof of the Langlands–Shelstad fundamental lemma. Ngô’s approach is based on a study of the elliptic part of the Hichin fibration. The total space of this fibration is the algebraic stack of Hitchin bundles and its base space is the affine space of ‘characteristic polynomials’. Over the elliptic set, the Hitchin fibration is proper and the number of points of its fibers over a finite field can be expressed in terms of orbital integrals. In this paper, we study the Hi

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