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Journal articles on the topic 'Single station approach'

Author: Grafiati

Published: 3 June 2025

Last updated: 19 July 2025

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1

Sung, Chih‐Hsuan, and Chyi‐Tyi Lee. "Improvement of the Quantification of Epistemic Uncertainty Using Single‐Station Ground‐Motion Prediction Equations." Bulletin of the Seismological Society of America 109, no. 4 (2019): 1358–77. http://dx.doi.org/10.1785/0120180044.

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Abstract The results of probabilistic seismic hazard analysis (PSHA) are sensitive to the standard deviation of the residuals of the ground‐motion prediction equations (GMPEs), especially for long‐return periods. Recent studies have proven that the epistemic uncertainty should be incorporated into PSHA using a logic‐tree method instead of mixing it with the aleatory variability. In this study, we propose using single‐station GMPEs with a novel approach (an epistemic‐residual diagram) to improve the quantification of epistemic uncertainty per station. The single‐station attenuation model is est

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Taylor, Andrew A., and Lance M. Leslie. "A Single-Station Approach to Model Output Statistics Temperature Forecast Error Assessment." Weather and Forecasting 20, no. 6 (2005): 1006–20. http://dx.doi.org/10.1175/waf893.1.

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Abstract Error characteristics of model output statistics (MOS) temperature forecasts are calculated for over 200 locations around the continental United States. The forecasts are verified on a station-by-station basis for the year 2001. Error measures used include mean algebraic error (bias), mean absolute error (MAE), relative frequency of occurrence of bias and MAE values, and the daily forecast errors themselves. A case study examining the spatial and temporal evolution of MOS errors is also presented. The error characteristics presented here, together with the case study, provide a more d

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Hu, Qing, Linlin Xu, and Xinyu Cheng. "A CORS-Based Differential Correction Approach for AIS Mobile Stations." Sensors 18, no. 11 (2018): 3626. http://dx.doi.org/10.3390/s18113626.

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In order to remedy the inadequacy of the sources of differential corrections in current automatic identification system (AIS) and to improve the positioning accuracy of AIS mobile stations using single-point positioning, a differential correction approach for AIS mobile stations based on the continuously operating reference station (CORS) network is proposed. In the approach, AIS server derives real-time pseudo-range differential corrections from each reference station in CORS network and generates the corrections for AIS mobile stations. Then AIS base stations transmit these differential corr

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Otugo, V., C. U. Okujagu, and S. Onwuneme. "Investigation of the relationship between f0f2 and the TEC using single station neural network models." Scientia Africana 20, no. 3 (2022): 161–72. http://dx.doi.org/10.4314/sa.v20i3.14.

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The relationship between the ionospheric critical plasma frequencies (f0F2) and GNSS-TEC (Global Navigation Satellite System –Total Electron Content) measurements was investigated using an artificial neural network method. About 20 pairs of ionosonde-GNSS receiver stations from 2000 to 2016 were used. Results from this work indicate that the relationship between f0F2 and TEC is mostly affected by the seasons, followed by the level of solar activity, and then the local time. Geomagnetic activity was the least significant of the factors investigated. The relationship between f0F2 and TEC was als

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Ding, Yu, Dariusz Ceglarek, and Jianjun Shi. "Design Evaluation of Multi-station Assembly Processes by Using State Space Approach." Journal of Mechanical Design 124, no. 3 (2002): 408–18. http://dx.doi.org/10.1115/1.1485744.

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This paper considers the problem of evaluating and benchmarking process design configuration in a multi-station assembly process. We focus on the unique challenges brought by the multi-station system, namely, (1) a system level model to characterize the variation propagation in the entire process, and (2) the necessity to describe the system response to variation inputs at both global (system level) and local (station level and single fixture level) scales. State space representation is employed to recursively describe the propagation of variation in such a multi-station process, incorporating

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Gao, Y., Y. Zhang, and Z. Lyu. "A PPP-RTK APPROACH TO MASS-MARKET APPLICATIONS." International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XLVIII-1/W1-2023 (May 25, 2023): 151–53. http://dx.doi.org/10.5194/isprs-archives-xlviii-1-w1-2023-151-2023.

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Abstract. PPP-RTK has been widely investigated to take the advantages of both real-time kinematic (RTK) and precise point positioning (PPP) techniques. Prior to PPP-RTK, the conventional RTK based on the use of a single base station, on the one hand, has been extended to work within a regional network of multiple base stations, known as network RTK (NRTK). The RTK and NRTK enable fast ambiguity resolution over a short baseline or a local region. PPP, on the other hand, eliminates the need to establish any local network like NRTK, which is able to work in a single receiver mode but it suffers l

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Sand, Christian, Tobias Lechler, Patricia Schuh, and Jörg Franke. "Potentials for Error Detection and Process Visualization in Assembly Lines Using a Parallel Coordinates Plot." Applied Mechanics and Materials 882 (July 2018): 10–16. http://dx.doi.org/10.4028/www.scientific.net/amm.882.10.

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Assembly lines consist of chained or unchained stations, yet usually only single stations are regarded individually for process and quality analytics. Since the quality of the final product depends on interactions of process parameters along the assembly flow, it is insufficient to analyze process parameters of each station separately. Therefore, data of every single assembly station along the assembly line has to be collected and stored. To explore such a big amount of multidimensional data and their correlations, different techniques are established. In this paper, assembly flows and their r

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Gao, Pengfei, Wei Zheng, Jintao Liu, and Daohua Wu. "Identification of Critical Track Sections in a Railway Station Using a Multiplex Networks Approach." Mathematics 13, no. 7 (2025): 1151. https://doi.org/10.3390/math13071151.

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Railway stations serve as critical nodes within transportation networks, and the efficient management of in-station track sections is vital for smooth operations. This study proposes an integrated method for identifying critical track sections, which refers to track sections with the highest static occupancy rates (HiSORTS), in railway station yards using a multiplex network framework. By modeling the station as a Railway Station Multiplex Network (RSMN) that incorporates train routes (TRs), extended routes (ERs), and shunting routes (SRs), the proposed approach overcomes the limitations of si

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Saenger, Erik H., Claudia Finger, Sadegh Karimpouli, and Pejman Tahmasebi. "Single-Station Coda Wave Interferometry: A Feasibility Study Using Machine Learning." Materials 14, no. 13 (2021): 3451. http://dx.doi.org/10.3390/ma14133451.

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Coda wave interferometry usually is applied with pairs of stations analyzing the signal transmitted from one station to another. A feasibility study was performed to evaluate if one single station could be used. In this case, the reflected coda wave signal from a zone to be identified was analyzed. Finite-difference simulations of wave propagation were used to study whether ultrasonic measurements could be used to detect velocity changes in such a zone up to a depth of 1.6 m in a highly scattering medium. For this aim, 1D convolutional neural networks were used for prediction. The crack densit

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Gomberg, J., G. Pavlis, and P. Bodin. "The strain in the array is mainly in the plane (waves below ∼1 Hz)." Bulletin of the Seismological Society of America 89, no. 6 (1999): 1428–38. http://dx.doi.org/10.1785/bssa0890061428.

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Abstract We compare geodetic and single-station methods of measuring dynamic deformations and characterize their causes in the frequency bands 0.5-1.0 Hz and 4.0-8.0 Hz. The geodetic approach utilizes data from small-aperture seismic arrays, applying techniques from geodesy. It requires relatively few assumptions and a priori information. The single-station method uses ground velocities recorded at isolated or single stations and assumes all the deformation is due to plane-wave propagation. It also requires knowledge of the azimuth and horizontal velocity of waves arriving at the recording sta

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M. Baqir, Zahraa, Mayasah R. Abdali, and Heba Abdul-Jaleel Al-Asady. "Design and Implementation of Smart Petrol Station." Basrah journal for engineering science 24, no. 1 (2024): 120–26. http://dx.doi.org/10.33971/bjes.24.1.13.

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The problem that still exists nowadays with the petrol station is the method of operation because the petrol station is currently operated manually. As it is a time-consuming process that increases manpower, other problems are related to accuracy, gasoline smuggling, fluctuations in global oil prices, sales, database management, environmental pollution and others. Traditional methods of monitoring fuel in petrol station by humans on site are unable to meet the expectations for efficiency, accuracy and cost. Therefore, this paper designs an intelligent system of three filling stations, where th

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Bashar, Abul. "An Efficient Cell Selection Approach in 4G Networks." December 2020 2, no. 4 (2021): 188–96. http://dx.doi.org/10.36548/jtcsst.2020.4.003.

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The cell selection mechanism that provides services to each mobile station is referred to as cell selection. For maximizing the current and future of cellular networks, it is necessary to optimize the process. The OFDMA-based systems are LTE-Advanced and IEEE 802.16m for satisfying the mobile station minimum demand by having one or more base station simultaneously. The problem is considered as the optimization problem and defines the problem as it is not considered as NP-hard and also not possible for approximation with a reasonable factor. The assumption is that the maximum required bandwidth

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Ostojin, S., S. R. Mounce, and J. B. Boxall. "An artificial intelligence approach for optimizing pumping in sewer systems." Journal of Hydroinformatics 13, no. 3 (2011): 295–306. http://dx.doi.org/10.2166/hydro.2011.059.

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This paper presents details of a fuzzy logic system developed for the control of sewer pumping stations for energy costs savings. This is part of an ongoing collaborative project between Anglian Water and the University of Sheffield. The model rules and operation are developed for one representative pumping station in order to enable the identification of potential benefits and inhibitors to Anglian Water. Results are included that demonstrate the potential for energy cost-savings by application to a single pumping station for dry weather flow conditions and through comparison to current on/of

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Srilatha, T., M. Ravi Kumar, Swapna Raghunath, and D. Venkata Ratnam. "Estimation of Ionospheric Spatial Gradient in Mid Latitudes by Satellite-Pair Method." Applied Mechanics and Materials 926 (April 23, 2025): 101–11. https://doi.org/10.4028/p-iy2u26.

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The aircraft's navigation system routinely makes use of the Global Navigation Satellite System (GNSS) during numerous phases of a flight. A primary concern is Ionospheric Gradients, which might impact the global positioning system's positional accuracy. Data from a single GNSS reference station is required for Ionospheric Spatial Gradient estimation using the well-known Time-Step Method. Temporal decorrelation faults are one type of inaccuracy that accompany the Time-Step Method. Conversely, the Station-Pair technique uses two GNSS reference stations that are closely separated to estimate the

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Wan, Zhiyong, Yun Li, Xiaogang Wang, Jianfeng An, Bo Dong, and Yipeng Liao. "Influence of Unsteady Flow Induced by a Large-Scale Hydropower Station on the Water Level Fluctuation of Multi-Approach Channels: A Case Study of the Three Gorges Project, China." Water 12, no. 10 (2020): 2922. http://dx.doi.org/10.3390/w12102922.

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Unsteady flow induced by hydropower stations exerts a significant impact on the water level in multi-approach channels, which directly threatens the safe passage of ships. In this study, a one-dimensional and a two-dimensional hydrodynamic model are adopted to simulate the water level fluctuations at the entrance of multi-approach channels and the lower lock head of a ship lift with consideration of initial water surface elevation, base flow, flow amplitude, regulation time, and locations of hydropower stations, unfavorable conditions are successfully identified; and the fluctuations at the ap

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Lage, Mariana de Oliveira, Cláudia Aparecida Soares Machado, Cristiano Martins Monteiro, et al. "Using Hierarchical Facility Location, Single Facility Approach, and GIS in Carsharing Services." Sustainability 13, no. 22 (2021): 12704. http://dx.doi.org/10.3390/su132212704.

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In the last few years, vehicle sharing has driven a gradual switch from ownership-based private mobility to service usage as a sustainable urban transport alternative. A significant number of cities have implemented mobility sharing programs. Shared transport reduces both traffic congestion, and the need for parking space, decreasing the number of vehicles on the road. The optimization of shared mobility service sites increases potential user access, reduces transportation costs, and augments demand for this transportation modality. Car sharing is a mobility concept where the usage of a vehicl

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Liu, Yingxin, Houqi Dong, Shengyan Wang, et al. "An Optimization Approach Considering User Utility for the PV-Storage Charging Station Planning Process." Processes 8, no. 1 (2020): 83. http://dx.doi.org/10.3390/pr8010083.

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Based on the comprehensive utilization of energy storage, photovoltaic power generation, and intelligent charging piles, photovoltaic (PV)-storage charging stations can provide green energy for electric vehicles (EVs), which can significantly improve the green level of the transportation industry. However, there are many challenges in the PV-storage charging station planning process, making it theoretically and practically significant to study approaches to planning. This paper promotes a bi-level optimization planning approach for PV-storage charging stations. First, taking PV-storage chargin

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Chow, K. C. Ander, and W. E. Watt. "A knowledge-based expert system for flood frequency analysis." Canadian Journal of Civil Engineering 17, no. 4 (1990): 597–609. http://dx.doi.org/10.1139/l90-068.

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Single-station flood frequency analysis is an important element in hydrotechnical planning and design. In Canada, no single statistical distribution has been specified for floods; hence, the conventional approach is to select a distribution based on its fit to the observed sample. This selection is not straightforward owing to typically short record lengths and attendant sampling error, magnified influence of apparent outliers, and limited evidence of two populations. Nevertheless, experienced analysts confidently select a distribution for a station based only on a few heuristics. A knowledge-

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Chow, K. C. Ander, and W. Edgar Watt. "Use of Akaike information criterion for selection of flood frequency distribution." Canadian Journal of Civil Engineering 19, no. 4 (1992): 616–26. http://dx.doi.org/10.1139/l92-071.

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When conducting a conventional single-station flood frequency analysis, an appropriate distribution must be selected. Typically, sample statistics, probability plots, goodness-of-fit tests, etc. are used to facilitate the decision process. For the predominate case of a relatively short record length of flood series, this standard approach leads to undue emphasis on goodness of fit and virtually no consideration of the uncertainty due to additional parameters. The information criterion suggested by Akaike (AIC) is a measure to evaluate the "benefit" of goodness of fit and the "cost" of paramete

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Cheng, T. C. Edwin, Alexander Lazarev, and Darya Lemtyuzhnikova. "A Metric Approach for the Two-Station Single-Track Railway Scheduling Problem." IFAC-PapersOnLine 55, no. 10 (2022): 2875–80. http://dx.doi.org/10.1016/j.ifacol.2022.10.167.

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Li, Na, Mike Tao Zhang, Shiming Deng, Zu-Hsu Lee, Lawrence Zhang, and Li Zheng. "Single-station performance evaluation and improvement in semiconductor manufacturing: A graphical approach." International Journal of Production Economics 107, no. 2 (2007): 397–403. http://dx.doi.org/10.1016/j.ijpe.2006.08.011.

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22

Farooq, Umar, Wasim Abbas, and Faryal Chaudhry. "Multi-Criteria Decision Making and Graph Theory-Based Optimization of the Lahore Metro System: A Metric Dimension, VIKOR, and PROMETHEE Approach." Journal of Mathematics Research 17, no. 1 (2025): 51. https://doi.org/10.5539/jmr.v17n1p51.

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Urban transportation networks play a crucial role in modern city planning, requiring efficient design, optimization, and management strategies. This study examines the Lahore Metro Orange Line using a combination of graph theory and multi-criteria decision-making (MCDM) techniques, specifically the metric dimension analysis, VIKOR, and PROMETHEE methods. The research begins with graph-theoretic modeling, where metro stations are treated as nodes and railway tracks as edges, revealing that the system exhibits a metric dimension of 1, indicating that a single reference station is sufficient for

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Tan, Truong-Ngoc, Ali Khenchaf, Fabrice Comblet, Pierre Franck, Jean-Marc Champeyroux, and Olivier Reichert. "Robust-Extended Kalman Filter and Long Short-Term Memory Combination to Enhance the Quality of Single Point Positioning." Applied Sciences 10, no. 12 (2020): 4335. http://dx.doi.org/10.3390/app10124335.

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In the recent years, multi-constellation and multi-frequency have improved the positioning precision in GNSS applications and significantly expanded the range of applications to new areas and services. However, the use of multiple signals presents advantages as well as disadvantages, since they may contain poor quality signals that negatively impact the position precision. The objective of this study is to improve the Single Point Positioning (SPP) accuracy using multi-GNSS data fusion. We propose the use of robust-Extended Kalman Filter (referred to as robust-EKF hereafter) to eliminate outli

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Arkhipov, Sergei Nikolaevich. "An approach to the implementation of measures to reduce incidents when receiving and handing over weapons and ammunition." Полицейская деятельность, no. 5 (May 2024): 27–39. http://dx.doi.org/10.7256/2454-0692.2024.5.69132.

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In this study, the author analyzes the causes and factors contributing to the occurrence of situations of unprofessional actions of policemen in handling combat hand-held small arms related to an involuntary shot when receiving and preparing it for service or when handing over weapons at the end of service. The author examines in detail such issues as: -ensuring security when receiving and handing over weapons in the duty station; - the lack of a unified approach, in the order of actions performed with weapons when loading and discharging it in the duty station; - the use of a single algorithm

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Xun, Lina, Xue Liu, Hui Lu, Jingjing Zhang, and Qing Yan. "Screening Approach of the Langley Calibration Station for Sun Photometers in China." Atmosphere 14, no. 11 (2023): 1641. http://dx.doi.org/10.3390/atmos14111641.

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A sun photometer is a type of photometer that points at the sun, and it has been playing an increasingly important role in characterizing aerosols across the world. As long as the solar photometer is accurately calibrated, the optical thickness of the aerosol can be obtained from the measured value of this device. When the calibration of a single instrument is not accurate, the inversion quantity varies greatly. The calibration constant of the sun photometer changes during its use process; thus, calibrations are frequently needed in order to ensure the accuracy of the measured value. The calib

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Hartse, Hans E., W. Scott Phillips, Michael C. Fehler, and Leigh S. House. "Single-station spectral discrimination using coda waves." Bulletin of the Seismological Society of America 85, no. 5 (1995): 1464–74. http://dx.doi.org/10.1785/bssa0850051464.

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Abstract Spectral discrimination methods applied at regional distances are based on the observation that there is a difference in the frequency content of the seismic waves radiated from the source region of earthquakes and explosions. We have investigated a spectral discrimination method that exploits the scattered energy contained in the event codas of seismograms to measure the relative source excitation of earthquakes and explosions as a function of frequency. Key strengths of the coda method include the following: (1) it is not affected by source radiation pattern because the scattering p

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Kusiak, Andrew. "Planning of flexible manufacturing systems." Robotica 3, no. 4 (1985): 229–32. http://dx.doi.org/10.1017/s0263574700002320.

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SUMMARYIn this paper a new approach to planning of Flexible Manufacturing Systems (FMSs) is discussed. This approach takes advantage of FMS features and is based on linking of machining and assembling operations. There are two problems embedded in the presented approach: station loading and operation scheduling. A formulation of a station loading problem for a single machining period is presented. Some of the computational results are also discussed.

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Pakeeza, Bukhari, Ahmad Riaz, and Muhammad Umer. "A Heuristic Approach for Type 2 Assembly Line Balancing Problem." Applied Mechanics and Materials 789-790 (September 2015): 1296–300. http://dx.doi.org/10.4028/www.scientific.net/amm.789-790.1296.

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An assembly system consists of work stations where specific tasks are carried in such a way that last station gives the complete product. An assembly line balancing Problem (ALBP) involves optimally assigning tasks among workstations with respect to some performance objective. ALBP problems are of NP hard nature and in literature; many efforts are there to solve the problem efficiently through heuristics. This paper proposes a heuristic algorithm for solving type 2 ALBP for single objective optimization. The proposed algorithm assigns tasks to a fixed no of stations with objective of minimizin

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Stephan, A., and K. ‐M Strack. "A simple approach to improve the S/N ratio for TEM data using multiple receivers." GEOPHYSICS 56, no. 6 (1991): 863–69. http://dx.doi.org/10.1190/1.1443104.

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Since electromagnetic (EM) techniques are very sensitive to cultural noise, many cases exist where standard processing techniques do not yield satisfactory signal‐to‐noise ratios (S/N). For EM surveys in areas with coherent regional EM noise we have developed a local noise compensation (LNC) technique. This technique, for transient EM methods, uses several mobile receivers referenced to a nearby (local) base station. LNC is applied as a prestack processing technique, and it is intended for multichannel systems with close receiver spacings. The main premise for LNC is that the regional noise is

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Chen, Tzu-Chun, Yu-Tso Liao, John Huang, Ji-Shiang Hung, and Jin-Tung Liang. "Standardize the surgical technique and clarify the oncologic significance of robotic D3-D4 lymphadenectomy for upper rectum and sigmoid colon cancer with clinically more than N2 lymph node metastasis." International Journal of Surgery 110, no. 4 (2024): 2034–43. http://dx.doi.org/10.1097/js9.0000000000001061.

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Background: The territory of D3-D4 lymphadenectomy for upper rectal and sigmoid colon cancer varies, and its oncological efficacy is unclear. This prospective study aimed to standardize the surgical technique of robotic D3-D4 lymphadenectomy and clarify its oncologic significance. Methods: Patients with upper rectal or sigmoid colon cancer with clinically suspected more than N2 lymph node metastasis were prospectively recruited to undergo standardized robotic D3-D4 lymphadenectomy. Immediately postsurgery, the retrieved lymph nodes were mapped to five N3-N4 nodal stations: the inferior mesente

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Li, Xin, Jianzhong Shang, and Hong Zhu. "An assembly sensitivity analysis method based on state space model." Assembly Automation 37, no. 2 (2017): 249–59. http://dx.doi.org/10.1108/aa-04-2016-033.

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Purpose This paper aims to consider a problem of assembly sensitivity in a multi-station assembly process. The authors focus on the assembly process of aircrafts, which includes cabins and inertial navigation system (INSs), and establish the assembly process state space model for their assembly sensitivity research. Design/methodology/approach To date, the process-related errors that cause large variations in key product characteristics remains one of the most critical research topics in assembly sensitivity analysis. This paper focuses on the unique challenges brought about by the multi-stati

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Sgattoni, Giulia, and Silvia Castellaro. "Detecting 1-D and 2-D ground resonances with a single-station approach." Geophysical Journal International 223, no. 1 (2020): 471–87. http://dx.doi.org/10.1093/gji/ggaa325.

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SUMMARY The vibration modes of the ground have been described both in the 1-D and 2-D case. The 1-D resonance is found on geological structures whose aspect ratio is low, that is on layers with a lateral width much larger than their thickness. A typical example is that of a horizontal soft sediment layer overlying hard bedrock. In this case, the 1-D resonance frequency, traditionally detected by means of the microtremor H/V (horizontal to vertical spectral ratio) technique, depends on the bedrock depth and on the shear wave velocity of the resonating cover layer. The H/V technique is thus used

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Cheng, Tianjian, Brady R. Cox, Joseph P. Vantassel, and Lance Manuel. "A statistical approach to account for azimuthal variability in single-station HVSR measurements." Geophysical Journal International 223, no. 2 (2020): 1040–53. http://dx.doi.org/10.1093/gji/ggaa342.

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SUMMARY The horizontal-to-vertical spectral ratio (HVSR) of ambient noise is commonly used to infer a site's resonance frequency (${f_{0,site}}$). HVSR calculations are performed most commonly using the Fourier amplitude spectrum obtained from a single merged horizontal component (e.g. the geometric mean component) from a three-component sensor. However, the use of a single merged horizontal component implicitly relies on the assumptions of azimuthally isotropic seismic noise and 1-D surface and subsurface conditions. These assumptions may not be justified at many sites, leading to azimuthal v

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Heise, S., G. Dick, G. Gendt, T. Schmidt, and J. Wickert. "Integrated water vapor from IGS ground-based GPS observations: initial results from a global 5-min data set." Annales Geophysicae 27, no. 7 (2009): 2851–59. http://dx.doi.org/10.5194/angeo-27-2851-2009.

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Abstract. Ground based GPS zenith path delay (ZPD) measurements are well established as a powerful tool for integrated water vapor (IWV) observation. The International GNSS Service (IGS) provides ZPD data of currently more than 300 globally distributed GPS stations. To derive IWV from these data, meteorological information (ground pressure and mean temperature above the station) are needed. Only a limited number of IGS stations is equipped with meteorological ground sensors up to now. Thus, meteorological data for IWV conversion are usually derived from nearby ground meteorological observation

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Salvadori, G., and C. De Michele. "Estimating strategies for multiparameter Multivariate Extreme Value copulas." Hydrology and Earth System Sciences 15, no. 1 (2011): 141–50. http://dx.doi.org/10.5194/hess-15-141-2011.

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Abstract. Multivariate Extreme Value models are a fundamental tool in order to assess potentially dangerous events. Exploiting recent theoretical developments in the theory of Copulas, new multiparameter models can be easily constructed. In this paper we suggest several strategies in order to estimate the parameters of the selected copula, according to different criteria: these may use a single station approach, or a cluster strategy, or exploit all the pair-wise relationships between the available gauge stations. An application to flood data is also illustrated and discussed.

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Yi, Zhonghai, Cuilin Kuang, Yarong Wang, Wenkun Yu, Changsheng Cai, and Wujiao Dai. "Combination of High- and Low-Rate GPS Receivers for Monitoring Wind-Induced Response of Tall Buildings." Sensors 18, no. 12 (2018): 4100. http://dx.doi.org/10.3390/s18124100.

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High-rise buildings are susceptible to wind-induced displacements, which can be precisely monitored by using GPS technology. However, GPS monitoring applications may be subject to signal interference and high hardware costs. This study presents a new wind-induced vibration monitoring approach that is based on the mixed use of high-rate and low-rate GPS receivers. In the proposed approach, high-rate receivers are only required in the monitoring stations, where we apply time-differenced positioning to obtain position changes between adjacent epochs. The derived high-rate monitoring station posit

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Hernando, Antonio, José Luis Galán-García, and Gabriel Aguilera-Venegas. "A fast and general algebraic approach to Railway Interlocking System across all train stations." AIMS Mathematics 9, no. 3 (2024): 7673–710. http://dx.doi.org/10.3934/math.2024373.

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<abstract><p>Railway interlocking systems are crucial safety components in rail transportation, designed to prevent train collisions by regulating switch positions and signal indications. These systems delineate potential train movements within a railway station by connecting sections into routes, which are further divided into blocks. To ensure safety, the system prohibits the simultaneous allocation of the same block or intersecting routes to multiple trains. In this study, we characterize the 'interlocking problem' as a safety verification task for a single real-time station con

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Diez, Carlos, Javier Palanca, Victor Sanchez-Anguix, Stella Heras, Adriana Giret, and Vicente Julián. "Towards a Persuasive Recommender for Bike Sharing Systems: A Defeasible Argumentation Approach." Energies 12, no. 4 (2019): 662. http://dx.doi.org/10.3390/en12040662.

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This work proposes a persuasion model based on argumentation theory and users’ characteristics for improving the use of resources in bike sharing systems, fostering the use of the bicycles and thus contributing to greater energy sustainability by reducing the use of carbon-based fuels. More specifically, it aims to achieve a balanced network of pick-up and drop-off stations in urban areas with the help of the users, thus reducing the dedicated management trucks that redistribute bikes among stations. The proposal aims to persuade users to choose different routes from the shortest route between

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Ding, Yu, Dariusz Ceglarek, and Jianjun Shi. "Fault Diagnosis of Multistage Manufacturing Processes by Using State Space Approach." Journal of Manufacturing Science and Engineering 124, no. 2 (2002): 313–22. http://dx.doi.org/10.1115/1.1445155.

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This paper presents a methodology for diagnostics of fixture failures in multistage manufacturing processes (MMP). The diagnostic methodology is based on the state-space model of the MMP process, which includes part fixturing layout geometry and sensor location. The state space model of the MMP characterizes the propagation of fixture fault variation along the production stream, and is used to generate a set of predetermined fault variation patterns. Fixture faults are then isolated by using mapping procedure that combines the Principal Component Analysis (PCA) with pattern recognition approac

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Koc, Gencer, Cuneyt Sert, and Kahraman Albayrak. "Use of artificial neural networks for the prediction of time-dependent air speed variation in metro stations." Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit 232, no. 8 (2018): 2186–97. http://dx.doi.org/10.1177/0954409718765053.

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In this study, the time-dependent, induced air speeds at critical sections of underground metro stations are assessed using a novel one-dimensional data-driven approach. For this purpose, three artificial neural networks are used, each trained for the most basic configuration of a single train moving in a single tunnel. The first two are trained to provide the maximum and time averaged values of the induced air speeds while the train is moving inside the approach tunnel or the station. The third one is used to simulate the time-dependent air speed variation during train stoppage and departure.

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Gao, Pengfei, Wei Zheng, Jintao Liu, and Daohua Wu. "Research on Modeling and Analysis Methods of Railway Station Yard Diagrams Based on Multi-Layer Complex Networks." Applied Sciences 15, no. 5 (2025): 2324. https://doi.org/10.3390/app15052324.

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Optimizing railway station operations necessitates the identification of critical track sections that constrain design throughput capacity under fixed infrastructure conditions. This paper proposes a novel multi-layer complex network-based approach for modeling and analyzing railway station yard diagrams, reframing the identification of key track sections affecting station throughput capacity as a node importance evaluation problem. In this model, nodes represent track sections included in routes specified by the station interlocking tables, while edges denote sequential connections between no

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Levy, Mounissamy, Sumanta Bose, D. Sriram Kumar, and Anh Van Dinh. "Rapid Beam Forming in Smart Antennas Using Smart-Fractal Concepts Employing Combinational Approach Algorithms." International Journal of Antennas and Propagation 2012 (2012): 1–10. http://dx.doi.org/10.1155/2012/467492.

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Smart antennas offer a broad range of ways to improve wireless system performance. They provide enhanced coverage through range extension, hole filling, and better building penetration. Smart antennas use an array of low gain antenna elements which are connected by a network. Fractal concepts have been used in antenna arrays recently. The important properties of fractal arrays are frequency independent multiband characteristics, schemes for realizing low side lobe designs, systematic approaches to thinning, and the ability to develop rapid beam forming algorithms. In this paper, an attempt has

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Miyazawa, Masakiyo. "Martingale approach for tail asymptotic problems in the generalized Jackson network." Probability and Mathematical Statistics 37, no. 2 (2018): 395–430. http://dx.doi.org/10.19195/0208-4147.37.2.11.

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MARTINGALE APPROACH FOR TAIL ASYMPTOTIC PROBLEMS IN THE GENERALIZED JACKSON NETWORKWe study the tail asymptotic of the stationary joint queue length distribution for a generalized Jackson network GJN for short, assumingits stability. For the two-station case, this problem has recently been solved in the logarithmic sense for the marginal stationary distributions under the setting that arrival processes and service times are of phase-type. In this paper, we study similar tail asymptotic problems on the stationary distribution, but problems and assumptions are different. First, the asymptotics a

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Egbert, Gary D., and Dean W. Livelybrooks. "Single station magnetotelluric impedance estimation: Coherence weighting and the regression M‐estimate." GEOPHYSICS 61, no. 4 (1996): 964–70. http://dx.doi.org/10.1190/1.1444045.

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The first step in the interpretation of magnetotelluric (MT) data involves estimating [Formula: see text] frequency‐domain impedances, Z(w), from the raw electric and magnetic field time series e(t), h(t) (approx. [Formula: see text] real numbers/site) [e.g., Swift, 1967, Sims et al., 1971]. Superficially, this initial data reduction step is almost trivial. Making the usual MT assumptions that the external sources are spatially uniform, and allowing for noise in the simplest way, e and h are related in the frequency domain via the linear statistical model e = Zh + ε, (1) where ε represents noi

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Wu, Zhi, Yuxuan Zhuang, Suyang Zhou, et al. "Bi-Level Planning of Multi-Functional Vehicle Charging Stations Considering Land Use Types." Energies 13, no. 5 (2020): 1283. http://dx.doi.org/10.3390/en13051283.

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Locating and planning charging stations for Low-Emission Vehicles (LEVs) such as Battery Electric Vehicle (BEV), Hydrogen Fuel-Cell Vehicle (HFCV), and Natural Gas Vehicle (NGV) are becoming increasingly important for LEV users, government, and the automobile industry. Conventional planning approach of charging station usually plans single functional charging station that can only serve one kind of LEVs, and other factors such as fuel type, driving range, initial fuel tank level, and refueling time of the LEV are less considered in the planning stage. In this article, we propose a bi-level pla

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Kuuseoks, E., H. O. Liechty, D. D. Reed, and J. Dong. "Relating Site-Specific Weather Data to Regional Monitoring Networks in the Lake States." Forest Science 43, no. 3 (1997): 447–52. http://dx.doi.org/10.1093/forestscience/43.3.447.

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Abstract Meteorological variables most frequently used in ecological studies include, or are derived from, daily precipitation and air temperature. In many studies, weather data from the nearest permanent weather station are used as surrogates for on-site measurements. This study discusses the problems with this approach and illustrates methods for developing regression equations for calculating site-specific daily minimum, average, and maximum temperatures, and precipitation amount from regional monitoring information. Meteorological data were collected at four sites along a 650 km climatic g

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Do, Dinh-Thuan, Chi-Bao Le, and Byung Moo Lee. "Robust Transmit Antenna Design for Performance Improvement of Cell-Edge Users: Approach of NOMA and Outage/Ergodic Capacity Analysis." Sensors 19, no. 22 (2019): 4907. http://dx.doi.org/10.3390/s19224907.

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In this investigation, a wireless sensor network using a non-orthogonal multiple access (NOMA) system is considered in two scenarios related to the number of serving access point/base stations, where two policies provide system performance improvement in two sensors (the near user and the far user). To improve performance efficiency, two robust transmit antenna strategies are designed related to the access point/base station (BS), namely (i) Transmit Antenna Selection (TAS) mode and (ii) two base station (TBS) approach to simultaneously serve NOMA users. First, the TAS scheme is implemented to

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Roanes-Lozano, Eugenio. "A Computational Approach to Overtaking Station Track Layout Design Using Graphs: An Extension That Supports Special Turnouts—An Improved Alternative Track Layout Proposal." Algorithms 15, no. 10 (2022): 368. http://dx.doi.org/10.3390/a15100368.

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The author recently designed, developed and implemented in Maple a package based on the use of digraphs that analyses the connectivity of an overtaking station on a double-track line. It was used to propose an alternative track layout for this kind of station, with advantages over the track layouts usually adopted. However, that package could only deal with “standard” turnouts (but neither with crossings nor with “special” turnouts, such as “single slip turnouts” or “scissors crossings”). This new article presents an improved version of the package. It uses a trick consisting in including virt

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Kuns, Michelle M., and W. Gary Sprules. "Zooplankton production in Lake Ontario: a multistrata approach." Canadian Journal of Fisheries and Aquatic Sciences 57, no. 11 (2000): 2240–47. http://dx.doi.org/10.1139/f00-189.

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We present evidence that estimates of annual zooplankton production in Lake Ontario based on stratified plankton net tows are preferable to those based on single, integrated tows through the whole water column. Samples were collected roughly every 2 weeks during 1993 and 1994 at a deep midlake station and at a shallower nearshore station. Stratified net tows were taken through each of the epilimnion, metalimnion, and hypolimnion and the mean temperatures of these strata used in production calculations. Integrated net tows were taken through the whole water column and the mean temperature of th

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van Dooren, G. A. J., and H. J. F. G. Govaerts. "Shielding of single- and double-reflector earth station antennas: a near- and far-field approach." IEE Proceedings H Microwaves, Antennas and Propagation 140, no. 4 (1993): 309. http://dx.doi.org/10.1049/ip-h-2.1993.0047.

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