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Artigos de revistas sobre o tema "Interval filter"

Autor: Grafiati

Publicado: 14 de setembro de 2024

Última modificação: 31 de julho de 2025

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1

Khan, Hidayat Ullah, Asghar Khan, Faiz Muhammad Khan, Amir Khan, and Muhammad Taj. "A NEW VIEW OF FUZZY ORDERED SEMIGROUPS." Open Journal of Science and Technology 1, no. 1 (2018): 9–17. http://dx.doi.org/10.31580/ojst.v1i1.150.

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fuzzy coding theory, fuzzy finite state machines, and fuzzy languages. In this paper, we introduce the concept of an interval-valued -fuzzy filter of an ordered semigroup, where with. Since the concept of an interval-valued -fuzzy filter is an important and useful generalization of the ordinary interval-valued fuzzy filter, we discuss some fundamental aspects of an interval-valued -fuzzy filters. An interval-valued -fuzzy filter is a generalization of the existing concept of an interval-valued fuzzy filter. We discuss the concept of an interval-valued -fuzzy left (right)-filters and provide so

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2

Ji, Hui, Songlin Nie, and Yeqing Huang. "An interval-fuzzy two-stage stochastic programming method for filter management of hydraulic systems." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 229, no. 15 (2014): 2788–809. http://dx.doi.org/10.1177/0954406214563737.

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An interval-fuzzy two-stage stochastic programming model for filter management of hydraulic system under uncertainties is proposed in this paper. The interval-fuzzy two-stage stochastic programming model integrates the two-stage stochastic programming, fuzzy programming, and interval parameter nonlinear programming into an optimization model of contamination control in hydraulic system. For a typical hydraulic system, it can be used for expressing the uncertainties existed in the purchase cost of filters, contamination ingression and generation rates, and contamination-holding capacity as prob

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3

Louédec, Morgan, and Luc Jaulin. "Interval Extended Kalman Filter—Application to Underwater Localization and Control." Algorithms 14, no. 5 (2021): 142. http://dx.doi.org/10.3390/a14050142.

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The extended Kalman filter has been shown to be a precise method for nonlinear state estimation and is the facto standard in navigation systems. However, if the initial estimated state is far from the true one, the filter may diverge, mainly due to an inconsistent linearization. Moreover, interval filters guarantee a robust and reliable, yet unprecise and discontinuous localization. This paper proposes to choose a point estimated by an interval method, as a linearization point of the extended Kalman filter. We will show that this combination allows us to get a higher level of integrity of the

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4

Ning Xiao-Lei, Wang Hong-Li, Zhang Qi, and Chen Lian-Hua. "Interval diffracted particle filter." Acta Physica Sinica 59, no. 7 (2010): 4426. http://dx.doi.org/10.7498/aps.59.4426.

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5

Heine, Kari, and Dan Crisan. "Uniform approximations of discrete-time filters." Advances in Applied Probability 40, no. 4 (2008): 979–1001. http://dx.doi.org/10.1239/aap/1231340161.

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Throughout recent years, various sequential Monte Carlo methods, i.e. particle filters, have been widely applied to various applications involving the evaluation of the generally intractable stochastic discrete-time filter. Although convergence results exist for finite-time intervals, a stronger form of convergence, namely, uniform convergence, is required for bounding the error on an infinite-time interval. In this paper we prove easily verifiable conditions for the filter applications that are sufficient for the uniform convergence of certain particle filters. Essentially, the conditions req

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6

Heine, Kari, and Dan Crisan. "Uniform approximations of discrete-time filters." Advances in Applied Probability 40, no. 04 (2008): 979–1001. http://dx.doi.org/10.1017/s0001867800002937.

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Throughout recent years, various sequential Monte Carlo methods, i.e. particle filters, have been widely applied to various applications involving the evaluation of the generally intractable stochastic discrete-time filter. Although convergence results exist for finite-time intervals, a stronger form of convergence, namely, uniform convergence, is required for bounding the error on an infinite-time interval. In this paper we prove easily verifiable conditions for the filter applications that are sufficient for the uniform convergence of certain particle filters. Essentially, the conditions req

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7

Palanivel, Kaliyaperumal, Prakasam Muralikrishna, Perumal Hemavathi, Ronnason Chinram та Pattarawan Singavananda. "Interval Valued Intuitionistic Fuzzy β-Filters on β-Algebras". International Journal of Analysis and Applications 20 (26 вересня 2022): 50. http://dx.doi.org/10.28924/2291-8639-20-2022-50.

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This study establishes the concept of interval valued intuitionistic fuzzy (InVInF) β-filters on β-algebras and a few of its related properties are investigated. Some compelling results of interval valued fuzzy β-filters have been examined. Further, the notions of products and strong β-filters are also introduced. In addition that, the level set and homomorphism of interval valued intuitionistic fuzzy β-filters are too discussed. Furthermore, we enacted that the intersection between two interval valued intuitionistic fuzzy β−filters is again an interval valued intuitionistic fuzzy β-filter.

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8

Hujo, Ľubomír, Juraj Jablonický, Juraj Tulík, Ján Kosiba, Jerzy Kaszkowiak, and Matej Michalides. "Verification Measurement of Laboratory Test Equipment for Evaluation of Technical Properties of Automotive Oil Filters." Applied Sciences 11, no. 18 (2021): 8435. http://dx.doi.org/10.3390/app11188435.

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By simulating the operating conditions, it is possible to verify and evaluate the technical properties of motor vehicle oil filters and the functionality of the designed equipment. Contaminated engine oil from operation was used with MANN W950/26 oil filter and a CNH Industrial 2992242 oil filter in the test circuit. Before use, the level of engine oil contamination in the test circuit was determined by evaluating the physicochemical properties. The laboratory test equipment also allows monitoring the technical life of oil filters, with variously contaminated engine oil, with the possibility o

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9

Qiu, Qian Sheng, Jing Xian Liu, De Qiang Chang, Ning Mao, and Xi Sun. "Study of Typical Filter Material on Dust Cleaning." Applied Mechanics and Materials 490-491 (January 2014): 58–63. http://dx.doi.org/10.4028/www.scientific.net/amm.490-491.58.

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filter get peoples attention increasingly as it has become the core of dust bag. In this paper, cleaning process residual resistance and peel rate of dust cleaning cycle were studied. Experimental results show that the initial resistance of the filter were close to the filters, polyester dust filter has a high cleaning strip ratio and a larger interval.

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10

Ansari, Aiysha, Padmaja Ramaiah, Lillian Collazo, Hamisu M. Salihu, and Donna Haiduven. "Comparison of Visual versus Microscopic Methods to Detect Blood Splatter from an Intravascular Catheter with Engineered Sharps Injury Protection." Infection Control & Hospital Epidemiology 34, no. 11 (2013): 1174–80. http://dx.doi.org/10.1086/673462.

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Objective.To determine whether retractable intravenous devices produced blood splatter and whether blood splatter frequency differed between visual and microscopy detection methods.Methods.In this laboratory-based experiment, 105 venipunctures were performed in a simulated brachial vein containing mock venous blood. The retraction mechanism was activated in a testing chamber with precut fabric filters, placed at 3 different locations, to capture blood splatter. Differences in filter mass, visual inspection, and microscopic analysis for presence of blood on filters were the units of analysis. D

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11

NIE, SONGLIN, HUI JI, YEQING HUANG, ZHEN HU, and YONGPING LI. "ROBUST INTERVAL-BASED MINIMAX-REGRET ANALYSIS METHOD FOR FILTER MANAGEMENT OF FLUID POWER SYSTEM." Asia-Pacific Journal of Operational Research 30, no. 06 (2013): 1350021. http://dx.doi.org/10.1142/s0217595913500218.

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Fluid contamination is one of the main reasons for the wear failure and the related downtime in a hydraulic power system. Filters play an important role in controlling the contamination effectively, increasing the reliability of the system, and maintaining the system economically. Due to the uncertainties of system parameters, the complicated relationship among components, as well as the lack of effective approach, managing filters is becoming one of the biggest challenges for engineers and decision makers. In this study, a robust interval-based minimax-regret analysis (RIMA) method is develop

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12

Yang, Yanting, Yan Liang, Linfeng Xu, Yuemei Qin, and Yanbo Yang. "Robust interval-constrained H ∞ filter." IET Control Theory & Applications 11, no. 7 (2017): 908–14. http://dx.doi.org/10.1049/iet-cta.2016.1472.

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13

Ozoliņš, O., V. Bobrovs, and G. Ivanovs. "DWDM Transmission Based on the Thin-Film Filter Technology." Latvian Journal of Physics and Technical Sciences 48, no. 3 (2011): 55–65. http://dx.doi.org/10.2478/v10047-011-0021-x.

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DWDM Transmission Based on the Thin-Film Filter Technology A dense wavelength division multiplexing (DWDM) transmission scheme with two thin-film filters (FWHM bandwidth 100 GHz and 200 GHz) has been realized to evaluate the minimum channel interval needed for a satisfactory bit error ratio. For this purpose, detailed research was conducted into the impact of the filters on the optical signal's de-multiplexing in a DWDM system, in which the measurements of eye diagrams and the optical power spectral densities of a received signal were made. From the results of measurements the minimum channel

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14

Manbetova, Zhanat, Pavel Dunayev, Assel Yerzhan, et al. "Method of undetermined coefficients for circuits and filters using Legendre functions." International Journal of Electrical and Computer Engineering (IJECE) 15, no. 1 (2025): 846. http://dx.doi.org/10.11591/ijece.v15i1.pp846-854.

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This article presents a new way to implement matching networks and filters using the method of undetermined coefficients. A method is proposed for approximating the transmission coefficient of the synthesized filter, taking into account the required amplitude-frequency characteristics. To synthesize the filter, an approximating function (AF) was used using orthogonal Legendre polynomials, which is a mathematical description using a system of equations. Filter properties whose implementation is based on modified Legendre approximating functions usually depend on the interval on which they are d

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15

Ausiannikau, A. V., and V. M. Kozel. "Optimal Histogram Filter." Doklady BGUIR 21, no. 5 (2023): 13–19. http://dx.doi.org/10.35596/1729-7648-2023-21-5-13-19.

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The article discusses a technique for constructing an optimal histogram filter and its modifications, taking into account a priori information about the expected probability distribution density. The main idea of constructing a histogram filter is to apply a special transformation that displays the profile of a section of any distribution law into a constant level of characteristic numbers equivalent to it. This transformation allows to determine the coefficients of the histogram filter. An estimate of the value of the number of data of a particular interval of the histogram is formed by the c

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16

Zahiri, Saeide, Arsham Saeid, and Esfandiar Eslami. "A new approach to filters in triangle algebras." Publications de l'Institut Math?matique (Belgrade) 101, no. 115 (2017): 267–83. http://dx.doi.org/10.2298/pim1715267z.

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We develop the filter theory in triangle algebras. We define several interval valued residuated lattice-filters (IVRL-filters for short) in triangle algebras. We investigate the relationships among these types of IVRL-filters. Also, some special triangle algebras are introduced and studied in details.

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17

Ausiannikau, A. V., and V. M. Kozel. "Filtration of histogram evaluation of probability density based on fuzzy data accessibility to a grouping interval." Doklady BGUIR 19, no. 4 (2021): 13–20. http://dx.doi.org/10.35596/1729-7648-2021-19-4-13-20.

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The paper proposes a histogram estimate of the probability density based on fuzzy data belonging to a grouping interval. A methodology for constructing a histogram estimate using a histogram smoothing filter is presented. The technique of constructing such a filter is described. The main filter parameter is established – the coefficient of the statistical relationship between the amount of data falling into the grouping interval for a single inclusion function and when approaching to use the membership function. The use of an iterative procedure for a histogram filter allows for a greater “smo

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18

Manbetova, Zhanat, Pavel Dunayev, Assel Yerzhan, et al. "Method of undetermined coefficients for circuits and filters using Legendre functions." International Journal of Electrical and Computer Engineering (IJECE) 15, no. 1 (2025): 846–54. https://doi.org/10.11591/ijece.v15i2.pp846-854.

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This article presents a new way to implement matching networks and filters using the method of undetermined coefficients. A method is proposed for approximating the transmission coefficient of the synthesized filter, taking into account the required amplitude-frequency characteristics. To synthesize the filter, an approximating function (AF) was used using orthogonal Legendre polynomials, which is a mathematical description using a system of equations. Filter properties whose implementation is based on modified Legendre approximating functions usually depend

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19

Liu, Hao, Yong Qing Su, Yan Ming Wang, Ji Guang Yue, and Shi Hui Luo. "Internal Model Control Based on Interval Arithmetic for Suspension Systems." Advanced Materials Research 482-484 (February 2012): 2007–11. http://dx.doi.org/10.4028/www.scientific.net/amr.482-484.2007.

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This paper deals with the application of interval arithmetic in internal model control (IMC) for suspension systems. The IMC problem is expressed as an optimization of filter parameters. And the optimization can be solved by branch-and-bound scheme with interval arithmetic techniques. We present the algorithm for the model of suspension systems. The effectiveness of the algorithm is demonstrated through simulation results.

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20

Phipps, Mary C., and Peter M. Byron. "A filter for “confidence interval -values”." Computational Statistics & Data Analysis 51, no. 12 (2007): 6435–46. http://dx.doi.org/10.1016/j.csda.2007.02.015.

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21

Zahiri, Saeide, Arsham Borumand Saeid, and Esfandiar Eslami. "A study of stabilizers in triangle algebras." Mathematica Slovaca 68, no. 1 (2018): 41–52. http://dx.doi.org/10.1515/ms-2017-0078.

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Abstract In this paper, we introduce the notions of stabilizer of a subset and the stabilizer of a subset with respect to another one in triangle algebras and study them in details. It is shown that the stabilizer of a subset and stabilizer of an interval valued residuated lattice filter (IVRL-filter) with respect to another IVRL-filter are IVRL-filters. We state and prove some theorems which determine some properties of this stabilizers in triangle algebras. Also, we prove that in linearly ordered triangle algebras, stabilizer of a set is an IVRL-extended prime filter. Finally, we consider th

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22

Hamidizadeh, Ramin, David Liu, Faisal Khosa, John Chung, Darren Klass, and Behrang Homayoon. "Retrievable Inferior Vena Cava Filters: A Tertiary Centre Perspective and Quality Assurance Study." Canadian Association of Radiologists Journal 70, no. 2 (2019): 193–98. http://dx.doi.org/10.1016/j.carj.2018.08.004.

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Purpose To conduct a retrospective review and quality assurance study of inferior vena cava (IVC) filter retrieval over a two-year period at a tertiary care centre. Methods Patients who underwent IVC filter placement or retrieval over a two-year period were identified. Medical records were reviewed for patient characteristics, filter indication, time to filter retrieval, and complications. Results IVC filters were placed in 229 patients between January 1, 2015 and December 31, 2016. 113 retrievals were attempted and 101 filters were successfully retrieved (89.4%). Median time to first retrieva

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23

Jiang, Chen, Shu-bi Zhang, and Qiu-zhao Zhang. "A Novel Robust Interval Kalman Filter Algorithm for GPS/INS Integrated Navigation." Journal of Sensors 2016 (2016): 1–7. http://dx.doi.org/10.1155/2016/3727241.

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Kalman filter is widely applied in data fusion of dynamic systems under the assumption that the system and measurement noises are Gaussian distributed. In literature, the interval Kalman filter was proposed aiming at controlling the influences of the system model uncertainties. The robust Kalman filter has also been proposed to control the effects of outliers. In this paper, a new interval Kalman filter algorithm is proposed by integrating the robust estimation and the interval Kalman filter in which the system noise and the observation noise terms are considered simultaneously. The noise data

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24

Degtyarev, Andrey N., Igor L. Afonin, and Alexander L. Polyakov. "Physically realizable reconstruction of a continuous signal after sampling." Radioelectronics. Nanosystems. Information Technologies. 16, no. 1 (2024): 3–10. http://dx.doi.org/10.17725/j.rensit.2023.16.003.

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It is proposed to describe signals in a physically realizable basis. Correlation functions of impulse characteristics of physically implemented filters are used as basic functions. To obtain analytical expressions of the functions of the proposed physically realizable basis, it is proposed to use inverse Fourier transforms from approximations (Butterworth, Chebyshev, etc.) of the squares of the amplitude-frequency characteristics of normalized low-pass filters. The basis, functions are copies of the indicated correlation functions of the impulse characteristics, shifted relative to each other

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25

Nie, S. L., Y. P. Li, X. Y. Shi, G. H. Huang, and B. Hu. "An IPINP model for the assessment of filter allocation and replacement strategies in a hydraulic contamination control system under uncertainty." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 223, no. 4 (2008): 999–1015. http://dx.doi.org/10.1243/09544062jmes1074.

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An interval-parameter integer non-linear programming (IPINP) model is developed for the assessment of filter allocation and replacement strategies in a hydraulic contamination control system under uncertainty. The IPINP can handle uncertainties expressed as interval values that exist in the left- and right-hand sides of constraints as well as in the objective function. A piecewise linearization approach is proposed to solve the IPINP model, which has advantages in identifying global optimum and is associated with low computational efforts for an uncertain non-linear programme. The developed me

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26

Li, Linmin, Peng Lin, and Junfeng Zhang. "Event-Triggered Asynchronous Filter of Positive Switched Systems with State Saturation." Mathematical Problems in Engineering 2022 (June 21, 2022): 1–24. http://dx.doi.org/10.1155/2022/7276646.

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This paper investigates the event-triggered asynchronous filter of positive switched systems with state saturation using linear programming and multiple Lyapunov functions. First, a filter is constructed for continuous-time positive switched systems. Under the asynchronous switching law, an error system is proposed with respect to positive switched systems and their filters, where the state saturation term is described in a polytopic form by virtue of the saturation property. A novel event-triggering condition is addressed based on a 1-norm inequality. Under the event-triggering condition, the

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27

Peng, Zhenrui, Jialiang Che, and Yibo Qi. "Interval response reconstruction based on Kalman filter." Structures 75 (May 2025): 108621. https://doi.org/10.1016/j.istruc.2025.108621.

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Bae, Tae-Wuk, Kee-Koo Kwon, and Kyu-Hyung Kim. "Electrocardiogram Fiducial Point Detector Using a Bilateral Filter and Symmetrical Point-Filter Structure." International Journal of Environmental Research and Public Health 18, no. 20 (2021): 10792. http://dx.doi.org/10.3390/ijerph182010792.

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The characteristics or aspects of important fiducial points (FPs) in the electrocardiogram (ECG) signal are complicated because of various factors, such as non-stationary effects and low signal-to-noise ratio. Due to the various noises caused by the ECG signal measurement environment and by typical ECG signal deformation due to heart diseases, detecting such FPs becomes a challenging task. In this study, we introduce a novel PQRST complex detector using a one-dimensional bilateral filter (1DBF) and the temporal characteristics of FPs. The 1DBF with noise suppression and edge preservation prese

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Freid, Aaron P., Paul K. Johnson, Manuela Musella, Reto Mu¨ller, Julie E. Steinbrenner, and Robert D. Palumbo. "Solar Blind Pyrometer Temperature Measurements in High Temperature Solar Thermal Reactors: A Method for Correcting the System-Sensor Cavity Reflection Error." Journal of Solar Energy Engineering 127, no. 1 (2005): 86–93. http://dx.doi.org/10.1115/1.1796992.

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We developed a method that enables one to correct solar blind pyrometer cavity temperature measurements for the system-sensor reflection error. The method is valid for measurements made on diffusely emitting and reflecting cavity surfaces when there is no participating medium between the pyrometer and the surface of interest. The surfaces’ emissivities must be known. The procedure gives the uncertainty interval associated with the correction. The procedure was validated by measuring surface temperatures in a solar reactor insulated with Yttria-stabilized Zirconia felt receiving concentrated so

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Schudel, Paul, and Markus Boller. "Onsite Wastewater Treatment with Intermittent Buried Filters." Water Science and Technology 22, no. 3-4 (1990): 93–100. http://dx.doi.org/10.2166/wst.1990.0188.

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A few intermittent buried sand filters have been constructed in Switzerland for the onsite treatment of small wastewater sources. The good experiences to date will certainly favour a more frequent application in the future. Investigations of the hydraulic behaviour and the removal efficiency, especially in one filter during and after a hydraulic flush, showed that the hydraulic load per dosing interval should preferably not be larger than 10 1/m2,interval. Tracer experiments as well as the analysis of pollutants during the intervals revealed considerable quality fluctuations along the hydrauli

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Lee, Chang-Kyu, Chansoo Park, June-Seok Choi, and Jong-Oh Kim. "Effects of various chemical cleaning conditions for pressured MF process." Water Science and Technology 75, no. 5 (2016): 1063–70. http://dx.doi.org/10.2166/wst.2016.573.

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A pilot-scale pressured hollow-fiber microfiltration (MF) process as pretreatment for the reverse osmosis process was studied and operated under various conditions to assess the relative influence of backwashing, chemical enhanced backwashing (CEB), and bag filter application. The pilot plant process consisted of backwashing but without the CEB or the bag filter as the first step of the research. As the second step of the research, the impact of the backwashing on permeability recovery was assessed at different intervals followed by the influence of CEB on flowrate recovery. Results from opera

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Bocquet, M. "Ensemble Kalman filtering without the intrinsic need for inflation." Nonlinear Processes in Geophysics 18, no. 5 (2011): 735–50. http://dx.doi.org/10.5194/npg-18-735-2011.

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Abstract. The main intrinsic source of error in the ensemble Kalman filter (EnKF) is sampling error. External sources of error, such as model error or deviations from Gaussianity, depend on the dynamical properties of the model. Sampling errors can lead to instability of the filter which, as a consequence, often requires inflation and localization. The goal of this article is to derive an ensemble Kalman filter which is less sensitive to sampling errors. A prior probability density function conditional on the forecast ensemble is derived using Bayesian principles. Even though this prior is bui

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Guetman, F. I., I. S. Kim, A. Bücher, et al. "On Filter Observations of Coronal Structures in the Light of FeX 6374 Å Emission Line." International Astronomical Union Colloquium 144 (1994): 575–78. http://dx.doi.org/10.1017/s0252921100026075.

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AbstractThe red coronal line of Fe X (6374 Å) seems to be extremely suitable for filter observations due to reduced sky scattering in this spectral interval and absence of blending by Fraunhofer lines. Comparative analysis of location of Hαstructures in colour and black-white pictures of the solar corona of July 11, 1991 was carried out. A conclusion was made that care should be taken when interference filters are used for the red corona observations. Non-ideal monochromatization of present-day existing interference filters may be responsible for some ”false“ red and white coronal structures w

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Julatha, Pongpun, Thiti Gaketem, Pannawit Khamrot, Rukchart Prasertpong, and Aiyared Iampan. "Sup-hesitant fuzzy UP-algebras." Journal of Interdisciplinary Mathematics 28, no. 2 (2025): 381–406. https://doi.org/10.47974/jim-1552.

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In this article, we examine the characteristics of sup-hesitant fuzzy UP-subalgebras (sup -HFUPSs) (resp., sup-hesitant fuzzy UP-filters (sup-HFUPFs), sup-hesitant fuzzy UP-ideals (sup-HFUPIs), sup-hesitant fuzzy strong UP-ideals (sup-HFSUPIs)) of UP-algebras and demonstrate that the notion of a sup-HFUPS (resp., sup-HFUPF, sup-HFUPI, sup-HFSUPI) is an extension of the notion of an interval-valued fuzzy UP-subalgebra (IvFUPS) (resp., interval-valued fuzzy UP-filter (IvFUPF), interval-valued fuzzy UP-ideal (IvFUPI), interval-valued fuzzy strong UP-ideal (IvFSUPI)). Additionally, fuzzy sets (FSs

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Zhang, Jian, and Ling Shen. "Applied Technology in an Adaptive Particle Filter Based on Interval Estimation and KLD-Resampling." Advanced Materials Research 1014 (July 2014): 452–58. http://dx.doi.org/10.4028/www.scientific.net/amr.1014.452.

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Particle filter as a sequential Monte Carlo method is widely applied in stochastic sampling for state estimation in a recursive Bayesian filtering framework. The efficiency and accuracy of the particle filter depends on the number of particles and the relocating method. The automatic selection of sample size for a given task is therefore essential for reducing unnecessary computation and for optimal performance, especially when the posterior distribution greatly varies overtime. This paper presents an adaptive resampling method (IE_KLD_PF) based on interval estimation, and after interval estim

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Saleem, M., M. S. Tahir, and G. Krammar. "EXPERIMENTAL STUDY OF FILTER CAKE FORMATION ON DIFFERENT FILTER MEDIA." Nucleus 46, no. 3 (2020): 83–89. https://doi.org/10.71330/thenucleus.2009.930.

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Removal of particulate matter from gases generated in the process industry is important for product recovery as well as emission control. Dynamics of filtration plant depend on operating conditions. The models, that predict filter plant behaviour, involve empirical resistance parameters which are usually derived from limited experimental data and are characteristics of the filter media and filter cake (dust deposited on filter medium). Filter cake characteristics are affected by the nature of filter media, process parameters and mode of filter regeneration. Removal of dust particles from air i

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Bouros, Panagiotis, and Nikos Mamoulis. "Relevance Queries for Interval Data." Proceedings of the ACM on Management of Data 3, no. 3 (2025): 1–26. https://doi.org/10.1145/3725343.

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A wide range of applications manage large collections of interval data. For instance, temporal databases manage validity intervals of objects or versions thereof, while in probabilistic databases attribute values of records are associated with confidence or uncertainty intervals. The main search operation on interval data is the retrieval of data intervals that intersect (i.e., overlap with) a query interval (e.g., find records which were valid in September 2020, find temperature readings with non-zero probability to be within [24, 26] degrees). As query results could be many, we need mechanis

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Faybusovich, L., and T. Mouktonglang. "Deterministic Kalman Filtering on Semi-Infinite Interval." International Journal of Mathematics and Mathematical Sciences 2012 (2012): 1–11. http://dx.doi.org/10.1155/2012/490139.

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Panek, P. "Time-Interval Measurement Based on SAW Filter Excitation." IEEE Transactions on Instrumentation and Measurement 57, no. 11 (2008): 2582–88. http://dx.doi.org/10.1109/tim.2008.925014.

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Du, Hao Cui, Bin Sun, and Ying Le Yao. "Research of Unary Lattice Implication Algebra Equations on Interval Sets." Advanced Materials Research 850-851 (December 2013): 761–66. http://dx.doi.org/10.4028/www.scientific.net/amr.850-851.761.

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The concepts are re-defined on the interval sets which are filter, prime filter, LI-ideal, dual atom and convex sub-lattice in the lattice implication algebra. Three basic unary lattice implication algebra equations on the interval sets are researched. The necessary and sufficient conditions for existence of solutions for the equations are presented. And some properties of equation sets also are given.

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Ashokaraj, Immanuel, Antonios Tsourdos, Peter Silson, and Brian White. "SENSOR BASED ROBOT LOCALISATION AND NAVIGATION: USING INTERVAL ANALYSIS AND NONLINEAR KALMAN FILTERS." Transactions of the Canadian Society for Mechanical Engineering 29, no. 2 (2005): 211–27. http://dx.doi.org/10.1139/tcsme-2005-0014.

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Multiple sensor fusion for robot localisation and navigation has attracted a lot of interest in recent years. This paper describes a sensor based navigation and localisation approach for an autonomous mobile robot using an interval analysis (IA) based adaptive mechanism for the non-linear Kalman filter namely the Extended Kalman filter (EKF). The map used for this study is two-dimensional and assumed to be known a priori. The robot is equipped with inertial sensors (INS), encoders and ultrasonic sensors. A non-linear Kalman filter is used to estimate the robots position using the inertial sens

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Lu, Zhongda, Guoliang Zhang, Yi Sun, Jie Sun, Fangming Jin, and Fengxia Xu. "Nonfragile H∞ Filter Design for Nonlinear Continuous-Time System with Interval Time-Varying Delay." Journal of Control Science and Engineering 2018 (September 5, 2018): 1–17. http://dx.doi.org/10.1155/2018/8198603.

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This paper investigates nonfragile H∞ filter design for a class of continuous-time delayed Takagi-Sugeno (T-S) fuzzy systems with interval time-varying delays. Filter parameters occur multiplicative gain variations according to the filter’s implementation, to handle this variations, a nonfragile H∞ filter is presented and a novel filtering error system is established. The nonfragile H∞ filter guarantees the filtering error system to be asymptotically stable and satisfies given H∞ performance index. By constructing a novel Lyapunov-Krasovskii function and using the linear matrix inequality (LMI

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Usman, Hamisu, and Nuraddeen Magaji. "Interval Type - 2 Fuzzy Logic Controller Based Shunt Active Power Filter for Power Quality Enhencement." International Journal of Engineering and Advanced Technology 13, no. 1 (2023): 68–73. http://dx.doi.org/10.35940/ijeat.a4299.1013123.

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Frequent wide spread of power electronics equipment to consumers have led to power quality problem in power system network, as a result to their nonlinear in nature. Due to this problem, current and voltage wave forms are no longer sinusoidal, which resulted in harmonics on them. Various methods have been deployed in order to mitigate the harmonic issues, like passive power filters and shunt active power filters. Presently, passive power filters are limited in used, because of its demerits as it produced parallel resonances, heavy in size and mitigate few harmonics. With the advancement in tec

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Hamisu, Usman. "Interval Type - 2 Fuzzy Logic Controller Based Shunt Active Power Filter for Power Quality Enhencement." International Journal of Engineering and Advanced Technology (IJEAT) 13, no. 1 (2023): 68–73. https://doi.org/10.35940/ijeat.A4299.1013123.

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<strong>Abstract:</strong> Frequent wide spread of power electronics equipment to consumers have led to power quality problem in power system network, as a result to their nonlinear in nature. Due to this problem, current and voltage wave forms are no longer sinusoidal, which resulted in harmonics on them. Various methods have been deployed in order to mitigate the harmonic issues, like passive power filters and shunt active power filters. Presently, passive power filters are limited in used, because of its demerits as it produced parallel resonances, heavy in size and mitigate few harmonics.

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Noumen, Euclide, Fabrice Tchoua Yinga, Blaise Blériot Koguep Njionou, and Chris Cornelis. "An Exploration of Ideals and Filters in Triangle Algebras." Axioms 13, no. 8 (2024): 566. http://dx.doi.org/10.3390/axioms13080566.

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In the study of algebraic structures related to logical systems, ideals and filters have different meanings and are algebraic notions related to logical provable formulas. Unlike the classical Boolean lattice theory, ideals and filters are not dual notions in residuated lattices. An interesting subclass of residuated lattices is the class of triangle algebras, which is an equational representation of interval-valued residuated lattices that provides an algebraic framework for using closed intervals as truth values in fuzzy logic. The main aim of this article is to introduce and study the conce

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Zigic, Aleksandar. "Preset time count rate meter using adaptive digital signal processing." Nuclear Technology and Radiation Protection 20, no. 1 (2005): 64–73. http://dx.doi.org/10.2298/ntrp0501064z.

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Two presented methods were developed to improve classical preset time count rate meters by using adapt able signal processing tools. An optimized detection algorithm that senses the change of mean count rate was implemented in both methods. Three low-pass filters of various structures with adaptable parameters to implement the control of the mean count rate error by suppressing the fluctuations in a controllable way, were considered and one of them implemented in both methods. An adaptation algorithm for preset time interval calculation executed after the low-pass filter was devised and implem

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Dutta, Gopa, Palla Vinay Kumar, and Salauddin Mohammad. "Retrieving characteristics of inertia gravity wave parameters with least uncertainties using the hodograph method." Atmospheric Chemistry and Physics 17, no. 23 (2017): 14811–19. http://dx.doi.org/10.5194/acp-17-14811-2017.

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Abstract. We have analyzed wind velocities measured with high-resolution Global Positioning System (GPS) radiosondes which have been flown continuously from Hyderabad for 120 h with an interval of 6 h. Hodograph method has been used to retrieve inertia gravity waves (IGWs) parameters. Background winds are removed from the time series by detrending, whereas polynomials of different orders are removed to obtain the fluctuations from individual profiles. A Butterworth filter is used to extract the monochromatic IGW component. Another filter finite impulse response (FIR1) is tried in a similar man

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Kwan, Chiman, and Hal Ferguson. "A Fresh Revisit of the Issues and Improvements in Impulse Invariance Filter Design for Infinite Impulse Response Filters." Electronics 13, no. 18 (2024): 3753. http://dx.doi.org/10.3390/electronics13183753.

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The objective of this paper is to first present some issues with impulse invariance filter (IIF) design during the design of digital infinite impulse response (IIR) filters. Engineers are often confused about some inconsistent observations. For instance, if the impulse response of a digital filter is designed using the impulse invariance procedure, then the analog and digital filters’ frequency and step responses are very different. Two simple remedies are presented in this paper. One is a post-processing approach that scales the frequency and step responses of the digital filter by the sampli

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Borzooei, Rajab Ali, Hee Sik Kim, Young Bae Jun, and Sun Shin Ahn. "MBJ-neutrosophic subalgebras and filters in $ BE $-algebras." AIMS Mathematics 7, no. 4 (2022): 6016–33. http://dx.doi.org/10.3934/math.2022335.

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<abstract><p>The concept of a neutrosophic set, which is a generalization of an intuitionistic fuzzy set and a para consistent set etc., was introduced by F. Smarandache. Since then, it has been studied in various applications. In considering a generalization of the neutrosophic set, Mohseni Takallo et al. used the interval valued fuzzy set as the indeterminate membership function because interval valued fuzzy set is a generalization of a fuzzy set, and introduced the notion of MBJ-neutrosophic sets, and then they applied it to BCK/BCI-algebras. The aim of this paper is to apply th

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Wang, Wenli, and Philip Winters. "Statistically Significant Efficiency Testing of HEPA Filters." Journal of the IEST 47, no. 1 (2004): 101–6. http://dx.doi.org/10.17764/jiet.47.1.bq380t6134311822.

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High Efficiency Particulate Air (HEPA) filter manufacturers must ensure the accuracy of efficiency testing for these filters and, at the same time, keep productivity at a reasonable level. This study describes tests conducted to determine the minimum time required to provide statistically significant efficiencies of HEPA filters using a test system currently in use of HEPA filter production. The test results of over 300 HEPA filters were analyzed in this study. The approaches in IEST RP-CC-007.1: Testing ULPA Filters for statistical analysis of particle counts were followed. A Poisson distribu

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