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Journal articles on the topic 'Void search algorithm'

Author: Grafiati

Published: 6 September 2023

Last updated: 7 September 2023

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1

Zhang, Yalong, Wei Yu, Xuan Ma, Hisakazu Ogura, and Dongfen Ye. "Multi-Objective Optimization for High-Dimensional Maximal Frequent Itemset Mining." Applied Sciences 11, no. 19 (2021): 8971. http://dx.doi.org/10.3390/app11198971.

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The solution space of a frequent itemset generally presents exponential explosive growth because of the high-dimensional attributes of big data. However, the premise of the big data association rule analysis is to mine the frequent itemset in high-dimensional transaction sets. Traditional and classical algorithms such as the Apriori and FP-Growth algorithms, as well as their derivative algorithms, are unacceptable in practical big data analysis in an explosive solution space because of their huge consumption of storage space and running time. A multi-objective optimization algorithm was propos

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Zhong, Deyun, Benyu Li, Tiandong Shi, Zhaopeng Li, Liguan Wang, and Lin Bi. "Repair of Voids in Multi-Labeled Triangular Mesh." Applied Sciences 11, no. 19 (2021): 9275. http://dx.doi.org/10.3390/app11199275.

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In this paper, we propose a novel mesh repairing method for repairing voids from several meshes to ensure a desired topological correctness. The input to our method is several closed and manifold meshes without labels. The basic idea of the method is to search for and repair voids based on a multi-labeled mesh data structure and the idea of graph theory. We propose the judgment rules of voids between the input meshes and the method of void repairing based on the specified model priorities. It consists of three steps: (a) converting the input meshes into a multi-labeled mesh; (b) searching for

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Frommholz, D. "IMAGE INTERPOLATION ON THE CPU AND GPU USING LINE RUN SEQUENCES." ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences V-2-2022 (May 17, 2022): 53–60. http://dx.doi.org/10.5194/isprs-annals-v-2-2022-53-2022.

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Abstract. This paper describes an efficient implementation of an image interpolation algorithm based on inverse distance weighting (IDW). The time-consuming search for support pixels bordering the voids to be filled is facilitated through gapless sweeps of different directions over the image. The scanlines needed for the sweeps are constructed from a path prototype per orientation whose regular substructures get reused and shifted to produce aligned duplicates covering the entire input bitmap. The line set is followed concurrently to detect existing samples around nodata patches and compute th

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Chaitanya, G. V. A., and G. S. Gupta. "Liquid flow in heap leaching using the discrete liquid flow model and graph-based void search algorithm." Hydrometallurgy 221 (August 2023): 106151. http://dx.doi.org/10.1016/j.hydromet.2023.106151.

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Zhu, Xiaoyuan, and Changhe Yuan. "Exact Algorithms for MRE Inference." Journal of Artificial Intelligence Research 55 (March 22, 2016): 653–83. http://dx.doi.org/10.1613/jair.4867.

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Most Relevant Explanation (MRE) is an inference task in Bayesian networks that finds the most relevant partial instantiation of target variables as an explanation for given evidence by maximizing the Generalized Bayes Factor (GBF). No exact MRE algorithm has been developed previously except exhaustive search. This paper fills the void by introducing two Breadth-First Branch-and-Bound (BFBnB) algorithms for solving MRE based on novel upper bounds of GBF. One upper bound is created by decomposing the computation of GBF using a target blanket decomposition of evidence variables. The other upper b

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Okamoto, Yoshifumi, Yusuke Tominaga, Shinji Wakao, and Shuji Sato. "Topology optimization of magnetostatic shielding using multistep evolutionary algorithms with additional searches in a restricted design space." COMPEL: The International Journal for Computation and Mathematics in Electrical and Electronic Engineering 33, no. 3 (2014): 894–913. http://dx.doi.org/10.1108/compel-10-2012-0202.

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Purpose – The purpose of this paper is to improve the multistep algorithm using evolutionary algorithm (EA) for the topology optimization of magnetostatic shielding, and the paper reveals the effectiveness of methodology by comparison with conventional optimization method. Furthermore, the design target is to obtain the novel shape of magnetostatic shielding. Design/methodology/approach – The EAs based on random search allow engineers to define general-purpose objects with various constraint conditions; however, many iterations are required in the FEA for the evaluation of the objective functi

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Savulionienė, Loreta, and Leonidas Sakalauskas. "Statistinis dažnų posekių paieškos algoritmas." Informacijos mokslai 58 (January 1, 2011): 126–43. http://dx.doi.org/10.15388/im.2011.0.3118.

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Šiuolaikinis gyvenimas susijęs su dideliais informacijos bei duomenų kiekiais. Paieška yra viena iš pagrindinių kompiuterio darbo operacijų. Paieškos tikslas – rasti dideliame duomenų kiekyje tam tikrą elementą ar elementų seką arba patvirtinti, kad jos nėra. Pagrindinis duomenų gavybos tikslas – rasti duomenyse prasmę, t. y. ryšius tarp duomenų, jų pasikartojamumą ir pan. Straipsnyje pasiūlytas naujas statistinis dažnų posekių paieškos algoritmas, eksperimentų rezultatai bei išvados. Statistinio dažnų posekių paieškos algoritmo esmė – greitai nustatyti dažnus posekius. Šis algoritmas netikrin

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Fiorini, Bartolomeo, Kazuya Koyama, and Albert Izard. "Studying large-scale structure probes of modified gravity with COLA." Journal of Cosmology and Astroparticle Physics 2022, no. 12 (2022): 028. http://dx.doi.org/10.1088/1475-7516/2022/12/028.

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Abstract We study the effect of two Modified Gravity (MG) theories, f(R) and nDGP, on three probes of large-scale structure, the real space power spectrum estimator Q 0, bispectrum and voids, and validate fast approximate COLA simulations against full N-body simulations for the prediction of these probes. We find that using the first three even multipoles of the redshift space power spectrum to estimate Q 0 is enough to reproduce the MG boost factors of the real space power spectrum for both halo and galaxy catalogues. By analysing the bispectrum and reduced bispectrum of Dark Matter (DM), we

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Zhao, Zhiyue, Baohui Wang, Jing Wang, et al. "Liquid film characteristics measurement based on NIR in gas–liquid vertical annular upward flow." Measurement Science and Technology 33, no. 6 (2022): 065014. http://dx.doi.org/10.1088/1361-6501/ac57ed.

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Abstract Liquid film plays a crucial role in void fraction, friction pressure drops, momentum and heat transfer in the two-phase flow. The film thickness measurement experiments of annular flow at four pressure conditions have been conducted using near-infrared sensor. The signal is processed by variational mode decomposition, whose parameters are optimized using the sparrow search algorithm. The envelope spectrum and Pearson correlation coefficient judgment criteria were adopted for signal reconstruction, and the value of the liquid film thickness is obtained. The effect (such as flow rate, p

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Chida, Nariyoshi, and Tachio Terauchi. "Repairing Regular Expressions for Extraction." Proceedings of the ACM on Programming Languages 7, PLDI (2023): 1633–56. http://dx.doi.org/10.1145/3591287.

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While synthesizing and repairing regular expressions (regexes) based on Programming-by-Examples (PBE) methods have seen rapid progress in recent years, all existing works only support synthesizing or repairing regexes for membership testing, and the support for extraction is still an open problem. This paper fills the void by proposing the first PBE-based method for synthesizing and repairing regexes for extraction. Our work supports regexes that have real-world extensions such as backreferences and lookarounds. The extensions significantly affect the PBE-based synthesis and repair problem. In

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Islam, Rashedul, Md Nasim Akhtar, Badlishah R. Ahmad, Utpal Kanti Das, Mostafijur Rahman, and Zahereel Ishwar Abdul Khalib. "An approach to building energy clusters using particle swarm optimization algorithm for allocating the tasks in computational grid." Indonesian Journal of Electrical Engineering and Computer Science 14, no. 2 (2019): 826. http://dx.doi.org/10.11591/ijeecs.v14.i2.pp826-833.

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<span>The proper mapping in case of allocation of available tasks among particles is a challenging job to accomplish. It requires proper procedural approach and effectual algorithm or strategy. The deterministic polynomial time for task allocation problem is relative. The existence of proper and exact approach for allocation problem is void. However, for the survival of the grid and executing the assigned tasks, the reserved tasks need to be allocated equally among the particles of the grid space. At the same time, the applied model for task allocation must not consume unnecessary time a

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Takubo, Tomohito, Erika Miyake, Atsushi Ueno, and Masaki Kubo. "Welding Line Detection Using Point Clouds from Optimal Shooting Position." Journal of Robotics and Mechatronics 35, no. 2 (2023): 492–500. http://dx.doi.org/10.20965/jrm.2023.p0492.

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A method for welding line detection using point cloud data is proposed to automate welding operations combined with a contact sensor. The proposed system targets a fillet weld, in which the joint line between two metal plates attached vertically is welded. In the proposed method, after detecting the position and orientation of two flat plates regarding a single viewpoint as a rough measurement, the flat plates are measured from the optimal shooting position in each plane in detail to detect a precise weld line. When measuring a flat plate from an angle, the 3D point cloud obtained by a depth c

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Butt, Suhail, Kamalrulnizam Bakar, Nadeem Javaid, et al. "Exploiting Layered Multi-Path Routing Protocols to Avoid Void Hole Regions for Reliable Data Delivery and Efficient Energy Management for IoT-Enabled Underwater WSNs." Sensors 19, no. 3 (2019): 510. http://dx.doi.org/10.3390/s19030510.

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The key concerns to enhance the lifetime of IoT-enabled Underwater Wireless Sensor Networks (IoT-UWSNs) are energy-efficiency and reliable data delivery under constrained resource. Traditional transmission approaches increase the communication overhead, which results in congestion and affect the reliable data delivery. Currently, many routing protocols have been proposed for UWSNs to ensure reliable data delivery and to conserve the node’s battery with minimum communication overhead (by avoiding void holes in the network). In this paper, adaptive energy-efficient routing protocols are proposed

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Tolpin, David, and Solomon Shimony. "MCTS Based on Simple Regret." Proceedings of the AAAI Conference on Artificial Intelligence 26, no. 1 (2021): 570–76. http://dx.doi.org/10.1609/aaai.v26i1.8126.

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UCT, a state-of-the art algorithm for Monte Carlo tree search (MCTS) in games and Markov decision processes, is based on UCB, a sampling policy for the Multi-armed Bandit problem (MAB) that minimizes the cumulative regret. However, search differs from MAB in that in MCTS it is usually only the final ``arm pull'' (the actual move selection) that collects a reward, rather than all ``arm pulls''. Therefore, it makes more sense to minimize the simple regret, as opposed to the cumulative regret. We begin by introducing policies for multi-armed bandits with lower finite-time and asymptotic simple re

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Hedjazian, N., Y. Capdeville, and T. Bodin. "Multiscale seismic imaging with inverse homogenization." Geophysical Journal International 226, no. 1 (2021): 676–91. http://dx.doi.org/10.1093/gji/ggab121.

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Summary Seismic imaging techniques such as elastic full waveform inversion (FWI) have their spatial resolution limited by the maximum frequency present in the observed waveforms. Scales smaller than a fraction of the minimum wavelength cannot be resolved, and only a smoothed, effective version of the true underlying medium can be recovered. These finite-frequency effects are revealed by the upscaling or homogenization theory of wave propagation. Homogenization aims at computing larger scale effective properties of a medium containing small-scale heterogeneities. We study how this theory can be

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Tolpin, David, and Solomon Shimony. "MCTS Based on Simple Rerget." Proceedings of the International Symposium on Combinatorial Search 3, no. 1 (2021): 193–99. http://dx.doi.org/10.1609/socs.v3i1.18221.

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UCT, a state-of-the art algorithm for Monte Carlo tree search (MCTS),is based on UCB, a policy for the Multi-armed Bandit problem (MAB) thatminimizes the cumulative regret. However, search differs from MAB inthat in MCTS it is usually only the final ``arm pull''that collects a reward, rather than all ``arm pulls''.Therefore, it makes more sense to minimize the simple, rather thancumulative, regret. We introduce policies formulti-armed bandits with lower simpleregret than UCB and develop a two-stage scheme (SR+CR) for MCTSwhich outperforms UCT empirically. We also propose a samplingscheme based

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Liu, Xinyu, Peiwen Hao, Aihui Wang, Liangqi Zhang, Bo Gu, and Xinyan Lu. "Non-destructive detection of highway hidden layer defects using a ground-penetrating radar and adaptive particle swarm support vector machine." PeerJ Computer Science 7 (March 30, 2021): e417. http://dx.doi.org/10.7717/peerj-cs.417.

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In this paper, a method that uses a ground-penetrating radar (GPR) and the adaptive particle swarm support vector machine (SVM) method is proposed for detecting and recognizing hidden layer defects in highways. Three common road features, namely cracks, voids, and subsidence, were collected using ground-penetrating imaging. Image segmentation was performed on acquired images. Original features were extracted from thresholded binary images and were compressed using the kl algorithm. The SVM classification algorithm was used for condition classification. For parameter optimization of the SVM alg

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18

Storch, Tobias. "Finding Mount Everest and Handling Voids." Evolutionary Computation 19, no. 2 (2011): 325–44. http://dx.doi.org/10.1162/evco_a_00032.

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Evolutionary algorithms (EAs) are randomized search heuristics that solve problems successfully in many cases. Their behavior is often described in terms of strategies to find a high location on Earth's surface. Unfortunately, many digital elevation models describing it contain void elements. These are elements not assigned an elevation. Therefore, we design and analyze simple EAs with different strategies to handle such partially defined functions. They are experimentally investigated on a dataset describing the elevation of Earth's surface. The largest value found by an EA within a certain r

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Asming, Vladimir, Andrey Fedorov, and Anzhelika Prokudina. "The program LOS for interactive seismic and infrasonic data processing." Russian Journal of Seismology 3, no. 1 (2021): 27–40. http://dx.doi.org/10.35540/2686-7907.2021.1.02.

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For many years, the Kola Division of the Geophysical Survey of the Russian Academy of Sciences carries out work on testing and implementation of modern techniques and algorithms for seismic and infrasonic data processing and event location. The KoD staff has developed several original algorithms that appeared to be useful for seismic and infrasonic event location and discrimination. In 2020, the LOS program was created. The most efficient tools for data processing and analysis, event location algorithms have been united in the program. The program also contains a modern mapping system and data

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Borodin, Kirill, and Nurlan Zhangabayuly Zhangabay. "Mechanical characteristics, as well as physical-and-chemical properties of the slag-filled concretes, and investigation of the predictive power of the metaheuristic approach." Curved and Layered Structures 6, no. 1 (2019): 236–44. http://dx.doi.org/10.1515/cls-2019-0020.

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AbstractOur article is devoted to development and verification of the metaheuristic optimisation algorithm in the course of selection of the compositional proportions of the slag-filled concretes. The experimental selection of various compositions and working modes, which ensure one and the same fixed level of a basic property, is the very labour-intensive and time-consuming process. This process cannot be feasible in practice in many situations, for example, in the cases, where it is necessary to investigate composite materials with equal indicators of resistance to aggressive environments or

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Muhammad, Shamsuddeen Hassan, and Abdulrasheed Mustapha. "A Form of List Viterbi Algorithm for Decoding Convolutional Codes." U.Porto Journal of Engineering 4, no. 2 (2018): 42–48. http://dx.doi.org/10.24840/2183-6493_004.002_0004.

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Viterbi algorithm is a maximum likelihood decoding algorithm. It is used to decode convolutional code in several wireless communication systems, including Wi-Fi. The standard Viterbi algorithm gives just one decoded output, which may be correct or incorrect. Incorrect packets are normally discarded thereby necessitating retransmission and hence resulting in considerable energy loss and delay. Some real-time applications such as Voice over Internet Protocol (VoIP) telephony do not tolerate excessive delay. This makes the conventional Viterbi decoding strategy sub-optimal. In this regard, a modi

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Semin, Mikhail, Evgenii Grishin, Lev Levin, and Artem Zaitsev. "Automated ventilation control in mines. Challenges, state of the art, areas for improvement." Journal of Mining Institute 246 (January 23, 2021): 623–32. http://dx.doi.org/10.31897/pmi.2020.6.4.

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The article is divided into three main parts. The first part provides an overview of the existing literature on theoretical methods for calculating the optimal air distribution in mines according to the criteria of energy efficiency and providing all sections of mines with the required amount of air. It is shown that by the current moment there are many different formulations of the problem of searching the optimal air distribution, many different approaches and methods for optimizing air distribution have been developed. The case of a single (main) fan is most fully investigated, while for ma

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Mayor, Vicente, Rafael Estepa, Antonio Estepa, and German Madinabeitia. "Deploying a Reliable UAV-Aided Communication Service in Disaster Areas." Wireless Communications and Mobile Computing 2019 (April 8, 2019): 1–20. http://dx.doi.org/10.1155/2019/7521513.

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When telecommunication infrastructure is damaged by natural disasters, creating a network that can handle voice channels can be vital for search and rescue missions. Unmanned Aerial Vehicles (UAV) equipped with WiFi access points could be rapidly deployed to provide wireless coverage to ground users. This WiFi access network can in turn be used to provide a reliable communication service to be used in search and rescue missions. We formulate a new problem for UAVs optimal deployment which considers not only WiFi coverage but also the mac sublayer (i.e., quality of service). Our goal is to disp

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Fathurrahman, Fathurrahman, and Yupi Kuspandi Putra. "Analisis Perbandingan Pengaruh Pertumbuhan Ekonomi Terhadap Tingkat Kesejahteraan Masyarakat Pada Desa Suralaga Dengan Menggunakan Algoritma Naive Bayes Dan Support Vector Machine (Svm)." Infotek : Jurnal Informatika dan Teknologi 4, no. 1 (2021): 1–10. http://dx.doi.org/10.29408/jit.v4i1.2961.

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Data is an inanimate object that is meaningless and useless for anything. This statement is a statement that is not based on existing facts and realities. In principle, data is an inanimate object whose collection can be very influential in all aspects of human life. Data can shock the world if processed and published. Because data is so influential, humans can speak freely which is unlikely to be debated. Data is able to influence the development and progress of a nation in all respects such as: economy, health, policy, security and so on. Therefore, data obtained by means of surveys and so o

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Dalpe, Allisa J., May-Win L. Thein, and Martin Renken. "PERFORM: A Metric for Evaluating Autonomous System Performance in Marine Testbed Environments Using Interval Type-2 Fuzzy Logic." Applied Sciences 11, no. 24 (2021): 11940. http://dx.doi.org/10.3390/app112411940.

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Trust and confidence in autonomous behavior is required to send autonomous vehicles into operational missions. The authors introduce the Performance Evaluation and Review Framework Of Robotic Missions (PERFORM), a framework to enable a rigorous and replicable autonomy test environment, thereby filling the void between that of merely simulating autonomy and that of completing true field missions. A generic architecture for defining the missions under test is proposed and a unique Interval Type-2 Fuzzy Logic approach is used as the foundation for the mathematically rigorous autonomy evaluation f

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Konovalov, V. A. "GENERALIZED MATHEMATICAL MODEL OF MONEY LAUNDERING AND TERRORISM FINANCING RISK TYPOLOGY IN BIG DATA OF SOCIO-ECONOMIC SYSTEMS." Vestnik komp'iuternykh i informatsionnykh tekhnologii, no. 214 (April 2022): 42–51. http://dx.doi.org/10.14489/vkit.2022.04.pp.042-051.

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The big data of socio-economic systems is investigated in order to synthesize a generalized model of the typology of the risk of money laundering. The analysis of actual requirements to the typology model was carried out. A model for input, output and classification of objects, sets, categories in big data represented by topos has been developed. It is shown that classified objects can be entered into an artificial intelligence database and used to search and analyze typologies of money laundering risks. The concept is introduced and the category-theoretic formula of the event of the risk of m

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Moews, Ben, Morgan A. Schmitz, Andrew J. Lawler, et al. "Ridges in the Dark Energy Survey for cosmic trough identification." Monthly Notices of the Royal Astronomical Society 500, no. 1 (2020): 859–70. http://dx.doi.org/10.1093/mnras/staa3204.

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ABSTRACT Cosmic voids and their corresponding redshift-projected mass densities, known as troughs, play an important role in our attempt to model the large-scale structure of the Universe. Understanding these structures enables us to compare the standard model with alternative cosmologies, constrain the dark energy equation of state, and distinguish between different gravitational theories. In this paper, we extend the subspace-constrained mean shift algorithm, a recently introduced method to estimate density ridges, and apply it to 2D weak lensing mass density maps from the Dark Energy Survey

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Rajesh Sharma, R., and P. Marikkannu. "Hybrid RGSA and Support Vector Machine Framework for Three-Dimensional Magnetic Resonance Brain Tumor Classification." Scientific World Journal 2015 (2015): 1–14. http://dx.doi.org/10.1155/2015/184350.

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A novel hybrid approach for the identification of brain regions using magnetic resonance images accountable for brain tumor is presented in this paper. Classification of medical images is substantial in both clinical and research areas. Magnetic resonance imaging (MRI) modality outperforms towards diagnosing brain abnormalities like brain tumor, multiple sclerosis, hemorrhage, and many more. The primary objective of this work is to propose a three-dimensional (3D) novel brain tumor classification model using MRI images with both micro- and macroscale textures designed to differentiate the MRI

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Boccaletti, A., P. Thébault, N. Pawellek, et al. "Two cold belts in the debris disk around the G-type star NZ Lupi." Astronomy & Astrophysics 625 (May 2019): A21. http://dx.doi.org/10.1051/0004-6361/201935135.

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Context. Planetary systems hold the imprint of the formation and of the evolution of planets especially at young ages, and in particular at the stage when the gas has dissipated leaving mostly secondary dust grains. The dynamical perturbation of planets in the dust distribution can be revealed with high-contrast imaging in a variety of structures. Aims. SPHERE, the high-contrast imaging device installed at the VLT, was designed to search for young giant planets in long period, but is also able to resolve fine details of planetary systems at the scale of astronomical units in the scattered-ligh

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Alwan, Ghanim M. "Enhancement of Uniformity of Solid Particles in Spouted Bed Using Stochastic Optimization." Iraqi Journal of Chemical and Petroleum Engineering 16, no. 3 (2015): 23–33. http://dx.doi.org/10.31699/ijcpe.2015.3.3.

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Performance of gas-solid spouted bed benefit from solids uniformity structure (UI).Therefore, the focus of this work is to maximize UI across the bed based on process variables. Hence, UI is to be considered as the objective of the optimization process .Three selected process variables are affecting the objective function. These decision variables are: gas velocity, particle density and particle diameter. Steady-state solids concentration measurements were carried out in a narrow 3-inch cylindrical spouted bed made of Plexiglas that used 60° conical shape base. Radial concentration of particle

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Mayor, Vicente, Rafael Estepa, Antonio Estepa, and Germán Madinabeitia. "Energy-Efficient UAVs Deployment for QoS-Guaranteed VoWiFi Service." Sensors 20, no. 16 (2020): 4455. http://dx.doi.org/10.3390/s20164455.

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This paper formulates a new problem for the optimal placement of Unmanned Aerial Vehicles (UAVs) geared towards wireless coverage provision for Voice over WiFi (VoWiFi) service to a set of ground users confined in an open area. Our objective function is constrained by coverage and by VoIP speech quality and minimizes the ratio between the number of UAVs deployed and energy efficiency in UAVs, hence providing the layout that requires fewer UAVs per hour of service. Solutions provide the number and position of UAVs to be deployed, and are found using well-known heuristic search methods such as g

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Cox, Louis. "Information Structures for Causally Explainable Decisions." Entropy 23, no. 5 (2021): 601. http://dx.doi.org/10.3390/e23050601.

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For an AI agent to make trustworthy decision recommendations under uncertainty on behalf of human principals, it should be able to explain why its recommended decisions make preferred outcomes more likely and what risks they entail. Such rationales use causal models to link potential courses of action to resulting outcome probabilities. They reflect an understanding of possible actions, preferred outcomes, the effects of action on outcome probabilities, and acceptable risks and trade-offs—the standard ingredients of normative theories of decision-making under uncertainty, such as expected util

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Ankit, Kumar. "Can A Faraday’s Cage In Today’s Digital Age Safeguard Our Privacy?" Advanced Computing and Communications, December 30, 2019. http://dx.doi.org/10.34048/2019.4.f1.

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We all grew up learning from experiments and observations, making sure that we learn and understand things with interaction. In India, we are more familiar with cricket and football than lawn-tennis or golf, or we all learn our mother tongue by being exposed to it. Imagine me having exposure to only indoor variety of games, would I develop a taste for outdoor games like cricket or football? This learning by exposure is also equally easily applicable on food, religion, language and other habits, which define a person, his thoughts and his habits. The larger question is whether we can weave a ne

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Zhou, Hong, and Rutesh B. Patil. "The Discrete Topology Optimization of Structures Using the Improved Hybrid Discretization Model." Journal of Mechanical Design 134, no. 12 (2012). http://dx.doi.org/10.1115/1.4007841.

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In the discrete topology optimization, material state is either solid or void and there is no topology uncertainty caused by any intermediate material state. In this paper, the improved hybrid discretization model is introduced for the discrete topology optimization of structures. The design domain is discretized into quadrilateral design cells and each quadrilateral design cell is further subdivided into triangular analysis cells. The dangling and redundant solid design cells are completely eliminated from topology solutions in the improved hybrid discretization model to avoid sharp protrusio

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Zhou, Hong, and Pranjal P. Killekar. "The Modified Quadrilateral Discretization Model for the Topology Optimization of Compliant Mechanisms." Journal of Mechanical Design 133, no. 11 (2011). http://dx.doi.org/10.1115/1.4004986.

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The modified quadrilateral discretization model for the topology optimization of compliant mechanisms is introduced in this paper. The design domain is discretized into quadrilateral design cells. There is a certain location shift between two neighboring rows of quadrilateral design cells. This modified quadrilateral discretization model allows any two contiguous design cells to share an edge whether they are in the horizontal, vertical, or diagonal direction. Point connection is completely eliminated. In the proposed topology optimization method, design variables are all binary, and every des

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Zhou, Hong, and Avinash R. Mandala. "Topology Optimization of Compliant Mechanisms Using the Improved Quadrilateral Discretization Model." Journal of Mechanisms and Robotics 4, no. 2 (2012). http://dx.doi.org/10.1115/1.4006194.

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The improved quadrilateral discretization model for the topology optimization of compliant mechanisms is introduced in this paper. The design domain is discretized into quadrilateral design cells and each quadrilateral design cell is further subdivided into triangular analysis cells. All kinds of dangling quadrilateral design cells and sharp-corner triangular analysis cells are removed in the improved quadrilateral discretization model to promote the material utilization. Every quadrilateral design cell or triangular analysis cell is either solid or void to implement the discrete topology opti

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Zhou, Hong. "Topology Optimization of Compliant Mechanisms Using Hybrid Discretization Model." Journal of Mechanical Design 132, no. 11 (2010). http://dx.doi.org/10.1115/1.4002663.

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The hybrid discretization model for topology optimization of compliant mechanisms is introduced in this paper. The design domain is discretized into quadrilateral design cells. Each design cell is further subdivided into triangular analysis cells. This hybrid discretization model allows any two contiguous design cells to be connected by four triangular analysis cells whether they are in the horizontal, vertical, or diagonal direction. Topological anomalies such as checkerboard patterns, diagonal element chains, and de facto hinges are completely eliminated. In the proposed topology optimizatio

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Zhu, Xiaoe, Rita Yi Man Li, M. James C. Crabbe, and Khunanan Sukpascharoen. "Can a chatbot enhance hazard awareness in the construction industry?" Frontiers in Public Health 10 (November 30, 2022). http://dx.doi.org/10.3389/fpubh.2022.993700.

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Safety training enhances hazard awareness in the construction industry. Its effectiveness is a component of occupational safety and health. While face-to-face safety training has dominated in the past, the frequent lockdowns during COVID-19 have led us to rethink new solutions. A chatbot is messaging software that allows people to interact, obtain answers, and handle sales and inquiries through a computer algorithm. While chatbots have been used for language education, no study has investigated their usefulness for hazard awareness enhancement after chatbot training. In this regard, we develop

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Saxena, Anupam. "An Adaptive Material Mask Overlay Method: Modifications and Investigations on Binary, Well Connected Robust Compliant Continua." Journal of Mechanical Design 133, no. 4 (2011). http://dx.doi.org/10.1115/1.4003804.

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The material mask overlay strategy employs negative masks to create material voids within the design region to synthesize perfectly binary (0-1), well connected continua. Previous implementations use either a constant number of circular masks or increase the latter via a sequence of subsearches making the procedure computationally expensive. Here, a modified algorithm is presented wherein the number of masks is adaptively varied within a single search, in addition to their positions and sizes, thereby generating material voids, both efficiently and effectively. A stochastic, mutation-only sear

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Lu, Shujie, Haoyu Jiang, Chengwei Li, Baoyu Hong, Pu Zhang, and Wenli Liu. "Genetic Algorithm for TMS Coil Position Optimization in Stroke Treatment." Frontiers in Public Health 9 (March 11, 2022). http://dx.doi.org/10.3389/fpubh.2021.794167.

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Transcranial magnetic stimulation (TMS), a non-invasive technique to stimulate human brain, has been widely used in stroke treatment for its capability of regulating synaptic plasticity and promoting cortical functional reconstruction. As shown in previous studies, the high electric field (E-field) intensity around the lesion helps in the recovery of brain function, thus the spatial location and angle of coil truly matter for the significant correlation with therapeutic effect of TMS. But, the error caused by coil placement in current clinical setting is still non-negligible and a more precise

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"Optimal Cellular Automata Technique for Image Segmentation." International Journal of Innovative Technology and Exploring Engineering 9, no. 3 (2020): 1474–78. http://dx.doi.org/10.35940/ijitee.c8037.019320.

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Leukemia death secured 10 thplace among the most dangerous death in the world. The main reason is due to the delay in diagnosis which in turn delayed the treatment process. Hence it becomes an exigent requirement to diagnose leukemia in its early stage. Segmentation of WBC is the initial phase of leukemia detection using image processing.This paper aims to extract WBC from the image background. There exists various techniques for WBC segmentation in the literature. Yet, they provides inaccurate results.Cellular Automata can be effectively implemented in image processing. In this paper, we have

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Ferdous, Javedul, Hae-Na Lee, Sampath Jayarathna, and Vikas Ashok. "Enabling Efficient Web Data-Record Interaction for People with Visual Impairments via Proxy Interfaces." ACM Transactions on Interactive Intelligent Systems, January 10, 2023. http://dx.doi.org/10.1145/3579364.

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Web data records are usually accompanied by auxiliary webpage segments, such as filters, sort options, search form, and multi-page links, to enhance interaction efficiency and convenience for end users. However, blind and visually impaired (BVI) persons are presently unable to fully exploit the auxiliary segments like their sighted peers, since these segments are scattered all across the screen, and as such assistive technologies used by BVI users, i.e., screen reader and screen magnifier, are not geared for efficient interaction with such scattered content. Specifically, for blind screen read

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Leaver, Tama. "Going Dark." M/C Journal 24, no. 2 (2021). http://dx.doi.org/10.5204/mcj.2774.

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The first two months of 2021 saw Google and Facebook ‘go dark’ in terms of news content on the Australia versions of their platforms. In January, Google ran a so-called “experiment” which removed or demoted current news in the search results available to a segment of Australian users. While Google was only darkened for some, in February news on Facebook went completely dark, with the company banning all news content and news sharing for users within Australian. Both of these instances of going dark occurred because of the imminent threat these platforms faced from the News Media Bargaining Cod

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Голик, В. И., О. Г. Бурдзиева, and Б. В. Дзеранов. "Management of massif geomechanics through optimization of development technologies." Геология и геофизика Юга России, no. 1 (April 9, 2020). http://dx.doi.org/10.23671/vnc.2020.1.59070.

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Актуальность статьи объясняется необходимость поиска новых ресурсов повышение эффективности использования недр, в том числе, за счет рационального использования геомеханических особенностей скальных массивов при техногенном воздействии на них и механизма взаимодействия пород, слагающих массивы скальных месторождений. Объектом исследования служат структурно напряженные скальные массивы Садонского рудного узла. Целью исследований является оценка перспектив технологий разработки месторождений при освоении запасов в условиях техногенной ослабленности массивов. Методы решения основной задачи исслед

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Robinson, Jessica Yarin. "Fungible Citizenship." M/C Journal 25, no. 2 (2022). http://dx.doi.org/10.5204/mcj.2883.

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Social media companies like to claim the world. Mark Zuckerberg says Facebook is “building a global community”. Twitter promises to show you “what’s happening in the world right now”. Even Parler claims to be the “global town square”. Indeed, among the fungible aspects of digital culture is the promise of geographic fungibility—the interchangeability of location and national provenance. The taglines of social media platforms tap into the social imagination of the Internet erasing distance—Marshall McLuhan’s global village on a touch screen (see fig. 1). Fig. 1: Platform taglines: YouTube, Twit

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