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Research Square 2021年

作者： Chen, Yang Pi, Dechang Wang, Bi Mohamed, Ali Wagdy Chen, Junfu College of Computer Science and Technology Nanjing University of Aeronautics and Astronautics Nanjing211106 China School of Computer Science and Engineering Southeast University Nanjing211189 China Department of Operations Research Faculty of Graduate studies for Statistical Research Cairo University Giza12613 Egypt Department of Mathematics and Actuarial Science School of Sciences & Engineering The American University in Cairo Cairo11435 Egypt

Multiple Unmanned Aerial Vehicles (UAVs) path planning is the benchmark problem of multiple UAVs application, which belongs to the non-deterministic polynomial problem. Its objective is to require multiple UAVs flying safely to the goal position according to their specific start position in three-dimensional space. This issue can be defined as a high-dimensional optimization problem, the solution of which requires optimization techniques with global optimization capabilities. Equilibrium optimizer (EO) is a population-based meta-heuristic algorithm. In order to improve the optimization ability of EO to solve high-dimensional problems, this paper proposes a modified equilibrium optimizer with generalized opposition-based learning (MGOEO), which improves the population activity by increasing the internal mutation and cross of the population. In addition, the generalized opposition-based learning is used to construct the population, which can effectively ensure that the algorithm has ability to jump out of the limitation of local optimal. Firstly, numerical experiments show that MGOEO has better optimization precision than EO and several other swarm intelligent algorithms. Then, the paths of UAVs are simulated in three different obstacle environments. The simulation results show that MGOEO can obtain safe and smooth paths, which are better than EO and other eight state-of-the-art optimization algorithms. © 2021, CC BY.

关键词： Global optimization

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Multiple pivots in statistical machine translation for low resource languages 33

Multiple pivots in statistical machine translation for low r...

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33rd Pacific Asia Conference on Language, Information and Computation, PACLIC 2019

作者： Budiwati, Sari Dewi Aritsugi, Masayoshi Computer Science and Electrical Engineering Graduate School of Science and Technology Kumamoto University Japan School of Applied Science Telkom University Indonesia Big Data Science and Technology Faculty of Advanced Science and Technology Kumamoto University Japan

We investigate many combinations of multiple pivots of four phrase tables on a low resource language pair, i.e., Japanese to Indonesia, in phrase-based Statistical Machine Translation. English, Myanmar, Malay, and Filipino from Asian Language Treebank (ALT) were used as pivot languages. A combination of four phrase tables was examined with and without a source to target phrase table. Linear and Fillup Interpolation approaches were employed with two measurement parameters, namely, data types and phrase table orders. The dataset was divided into two data types, i.e., sequential and random. Furthermore, phrase table orders comprise of two, viz., descending and ascending. Experimental results show that the combination of multiple pivots outperformed the baseline. Moreover, the random type significantly improved BLEU scores, with the highest improvement by +0.23 and +1.02 for Japanese to Indonesia (Ja-Id) and Indonesia to Japanese (Id-Ja), respectively. Phrase tables order experiments show a different result for Ja-Id and Id-Ja. The descending order has a higher percentage as much as 87.5% compared to the ascending order in Ja-Id. Meanwhile, the ascending order obtained more than 90% in Id-Ja. Finally, the combination of multiple pivots attempt shows a significant effect to reduce perplexity score in Ja-Id and Id-Ja. Copyright © 2019 Sari Dewi Budiwati and Masayoshi Aritsugi.

关键词： computer aided language translation

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Live demonstration: Accurate time synchronization for industrial wireless LAN systems

Live demonstration: Accurate time synchronization for indust...

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2019 IEEE International Symposium on Circuits and Systems, ISCAS 2019

作者： Nguyen, Tran Thi Thao Nagao, Yuhei Surantha, Nico Kurosaki, Masayuki Ochi, Hiroshi Kyushu Institute of Technology Fukuoka Japan Computer Science Department Binus Graduate Program Bina Nusantara University Jakarta Indonesia

ISBN: (纸本)9781728103976

We demonstrate a precision time protocol (PTP) used to synchronize clocks in industrial wireless local area network (iWLAN) communication systems. The implementation of the system on FPGA boards for accurate verification and to test the feasibility of the system in a real environment. The result has been confirmed that time synchronization is high accuracy from 40 to 100 ns. © 2019 IEEE

关键词： Wireless local area networks (WLAN)

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arXiv

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arXiv 2020年

作者： Eom, Taekang Lee, Seungjun Ahn, Hee-Kap Department of Computer Science and Engineering Pohang University of Science and Technology Pohang Korea Republic of Department of Computer Science and Engineering Graduate School of Artificial Intelligence Pohang University of Science and Technology Pohang Korea Republic of

Given a convex polygon P with k vertices and a polygonal domain Q consisting of polygonal obstacles with total size n in the plane, we study the optimization problem of finding a largest similar copy of P that can be placed in Q without intersecting the obstacles. We improve the time complexity for solving the problem to O(k2n2λ4(k) log n). This is progress of improving the previously best known results by Chew and Kedem [SoCG89, CGTA93] and Sharir and Toledo [SoCG91, CGTA94] on the problem in more than 25 years. Copyright © 2020, The Authors. All rights reserved.

关键词： Computational geometry

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Efficient planar two-center algorithms∗

arXiv

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arXiv 2020年

作者： Choi, Jongmin Ahn, Hee-Kap Department of Computer Science and Engineering Pohang University of Science and Technology Pohang Korea Republic of Department of Computer Science and Engineering Graduate School of Artificial Intelligence Pohang University of Science and Technology Pohang Korea Republic of

We consider the planar Euclidean two-center problem in which given n points in the plane find two congruent disks of the smallest radius covering the points. We present a deterministic O(n log n)-time algorithm for the case that the centers of the two optimal disks are close together, that is, the overlap of the two optimal disks is a constant fraction of the disk area. This improves the previous best O(n log n log log n) bound by Wang for the case. We also present a deterministic O(n log n)-time algorithm for the case that the input points are in convex position. Copyright © 2020, The Authors. All rights reserved.

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The impact of the near-surface region on the interpretation of x-ray absorption spectroscopy

arXiv

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arXiv 2023年

作者： Shoham, Lishai Baskin, Maria Kauffmann, Yaron Zakharova, Anna Yoshida, Teppei Miyasaka, Shigeki Piamonteze, Cinthia Kornblum, Lior Andrew and Erna Viterbi Department of Electrical and Computer Engineering Technion Israel Institute of Technology Haifa3200003 Israel Electron Microscopy Center Department of Materials Science and Engineering Technion Israel Institute of Technology Haifa3200003 Israel Swiss Light Source Paul Scherrer Institute PSI VilligenCH-5232 Switzerland Graduate School of Human and Environmental Studies Kyoto University Sakyo-ku Kyoto606-8501 Japan Department of Physics Osaka University Toyonaka Osaka560-0043 Japan

Transition metal oxides (TMOs) exhibit a broad spectrum of electronic, magnetic, and optical properties, making them intriguing materials for various technological applications. Soft x-ray absorption spectroscopy (XAS) is widely used to study TMOs, shedding light on their chemical state, electronic structure, orbital polarization, element-specific magnetism, and more. Different XAS acquisition modes feature different information depth regimes in the sample. Here, we employ two XAS acquisition modes, having surface-sensitive versus "bulk" probing depths, on the prototypical TMO SrVO3. We illustrate and elucidate a strong apparent discrepancy between the different modes, emphasizing the impact of the near-surface region on the interpretation of XAS data. These findings highlight the importance of the acquisition mode selection in XAS analysis. Moreover, the results highlight the role of the near-surface region not only in the characterization of TMOs, but also in the design of future nanoscale oxide electronics. © 2023, CC BY.

关键词： Transition metal oxides

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Neural network architecture to optimize the nanoscale thermal transport of ternary magnetized Carreau nanofluid over 3D wedge

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Results in Physics 2024年 59卷

作者： Alqudah, Mohammad Zahir Hussain Shah, Syed Bilal Riaz, Muhammad Abd El-Wahed Khalifa, Hamiden Akgül, Ali Ayub, Assad Department of Basic Sciences School of Electrical Engineering & Information Technology German Jordanian University Amman 11180 Jordan Department of Mathematics and Statistics Hazara University Mansehra 21300 Pakistan IT4Innovations VSB – Technical University of Ostrava Ostrava Czech Republic Department of Computer Science and Mathematics Lebanese American University Byblos Lebanon Department of Mathematics College of Science Qassim University Buraydah 51452 Saudi Arabia Department of Operations and Management Research Faculty of Graduate Studies for Statistical Research Cairo University Giza 12613 Egypt Department of Computer Science and Mathematics Lebanese American University Beirut Lebanon Siirt University Art and Science Faculty Department of Mathematics Siirt 56100 Turkey Department of Mathematics Government College Mansehra Mansehra 21300 Pakistan

Significance: Incorporation of nanoparticles in base fluid water is significant for analysis of thermal behavior of nanofluid mixtures, which has various applications in materials science and thermal engineering, and supervised neural scheme predicts the thermal behavior by solving Carreau nanofluid model. Motive: This article brings the investigation related to prediction of thermal transport of a ternary magnetized hybrid nanofluid [(Al₂O₃, CuO, TiO₂)/H2O] with a three-dimensional Carreau nanofluid model over a wedge. Three nanoparticles dispersed in water (H₂O). Inclined magnetic field is considered for judgement of velocity profile and thermal radiation is utilized to scrutinize the temperature distribution of nanofluid. The Carreau mathematical model is chosen to depict the rheological characteristics of non-Newtonian fluids at very high and very low shear rate. Methodology: Physical assumptions creates the system of Partial differential equations (PDEs) and these are converted into ordinary differential equations (ODEs) by similarity tool. Further ODEs are dealt with bvp4c scheme and further prediction of solution is made by Levenberg-Marquardt neural network (LM-NN) supervised neural scheme. Findings: Increased volume friction coefficients of nanoparticles increases the transport of heat. High inclined magnetic effect, thermal radiation, pressure gradient and shear strain parameter predict higher thermal transport. © 2024 The Author(s)

关键词： 3D wedge Carreau model Deep learning supervised neural scheme Magnetized environment Nanofluid Nanoparticles Thermal radiation

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Applying mobility business intelligence concept in analyzing oil palm plantation productivity

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AIP Conference Proceedings 2024年第1期3026卷

作者： Andreas Wahyu Krisdiarto Irya Wisnubhadra Anzaludin Samsinga Perbangsa Teddy Suparyanto Bens Pardamean Faculty of Agricultural Technology STIPER Institute of Agriculture Yogyakarta Indonesia Informatics Engineering Department Atma Jaya Yogyakarta University Yogyakarta Indonesia Information Systems Department School of Information Systems Bina Nusantara University Jakarta Indonesia BDSRC Bina Nusantara University Jakarta Indonesia Computer Science Department BINUS Graduate Program – Master of Computer Science Bina Nusantara University Jakarta Indonesia

The palm oil business employs almost 20 million people, generates USD 21 billion in revenue, and plays a vital role in Indonesia’s social economy. The Fresh Fruit Bunches (FFB) to Palm Oil Mills (POM) distribution system is one important aspect of fruit quality. Three steps are involved in getting Oil Palm FFB from the plantation to the POM. The first part of the procedure involves cutting FFB from the tree, the second stage involves gathering the fruit at a fruit collection point (FCP), and the third stage involves transporting the fruit to the palm oil mill (POM). As of now, the cost of the FFB transportation is still considerable, accounting for roughly 15% to 20% of the FFB pricing. The use of the Business Intelligence (BI) idea in the oil palm harvesting system is presented in this study as a foundation for creating web-based applications.

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A simple student appraisal evaluation model based on multi-stage rule fuzzy logic

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AIP Conference Proceedings 2023年第1期2896卷

作者： Ditdit Nugeraha Utama Siti Sumiyati Irmawan Rahyadi Norhaslinda Zainal Abidin Norazura Ahmad Aida Mauziah Benjamin Wan Laailatul Hanim Binti Mat Desa Computer Science Department BINUS Graduate Program - Master of Computer Science Bina Nusantara University Jakarta Indonesia 11480 Communication Department BINUS Graduate Program - Master of Strategic Marketing Communication Bina Nusantara University Jakarta Indonesia 11480 Institute of Strategic Industrial Decision Modelling School of Quantitative Sciences Universiti Utara Malaysia 06010 Sintok Kedah Malaysia Decision Science Department School of Quantitative Sciences Universiti Utara Malaysia 06010 Sintok Kedah Malaysia

An evaluating process that involves the multi parameters and rules is complex and complicated. Such complexity shows that the problem is a semi-unstructured problem. Thus, the problem faced is possibly solved by proposing a new intelligentdecision model to get the quantitative decision. Here, the experimental research was conducted by methodically operating the conception of multi-stage rule-based fuzzy logic. The experimental research is a Python programming language experiment and it is one implementation of the multi-stage rule-based fuzzy logic in solving the problem of a simple case for evaluating student performance. The evaluation model was designed thru an object-oriented approach and was conclusively able to show the result of100 dummy students’ performance values.

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Element-selective local structural analysis around B-site cations in multiferroic Pb(Fe1/2Nb1/2)O3 using x-ray fluorescence holography

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Physical Review B 2021年第14期104卷 144101-144101页

作者： K. Kimura D. Urushihara R. Kondo Y. Yamamoto A. K. R. Ang T. Asaka N. Happo T. Hagihara T. Matsushita H. Tajiri H. Miyazaki K. Ohara M. Iwata K. Hayashi Department of Physical Science and Engineering Nagoya Institute of Technology Nagoya 466-8555 Japan Division of Advanced Ceramics Nagoya Institute of Technology Nagoya 466-8555 Japan Frontier Research Institute for Materials Science Nagoya Institute of Technology Nagoya 466-8555 Japan Department of Computer and Network Engineering Hiroshima City University Hiroshima 731-3194 Japan Graduate School of Science and Technology Nara Institute of Science and Technology Ikoma Nara 630-0192 Japan Japan Synchrotron Radiation Research Institute(JASRI) SPring-8 1-1-1 Kouto Sayo Hyogo 679-5198 Japan

X-ray fluorescence holography (XFH) measurements were carried out for multiferroic Pb(Fe1/2Nb1/2)O3 (PFN) single crystal to investigate variations in the local structures around Nb ions with decreasing temperature from 300 to 100 K, in combination with single-crystal x-ray diffraction (XRD) experiments. We find that the Nb–Pb correlation is more significantly changed by cooling than the average structure derived from the single-crystal XRD experiments, indicating a mobile feature of Nb ions. Also, we analyze previously obtained XFH results around Fe ions in detail for comparison with those around Nb ions. In contrast to the case of Nb ions, the variation in the Fe–Pb correlation with decreasing temperature is well explained by the average structure from 300 K down to the Néel temperature of about 150 K. On the other hand, a remarkable positional fluctuation between Fe and Pb ions is observed at 100 K, which is evaluated to be 90% larger than that between Nb and Pb ions. This observation strongly indicates the presence of spin-lattice coupling in PFN. The present study clearly elucidates the differences of local environment around the Nb ions from that around the Fe ions located at the same B-site.

关键词： Ferroelectricity Magnetoelectric effect Antiferromagnets Multiferroics Single crystal materials X-ray diffraction X-ray fluorescence holography

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