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The Dynamics and Control of the Fractional Forms of Some Rational Chaotic Maps

Journal of Systems Science & Complexity 2020年第3期33卷 584-603页

作者： OUANNAS Adel KHENNAOUI Amina-Aicha BENDOUKHA Samir WANG Zhen PHAM Viet-Thanh Laboratory of Mathematics Informatics and Systems(LAMIS)University of Larbi TebessiTebessa 12002Algeria Department of Mathematics and Computer Sciences University of Larbi Ben M'hidiOum El BouaghiAlgeria Department of Electrical Engineering College of EngineeringYanbuTaibah UniversitySaudi Arabia Shaanxi Engineering Research Center of Controllable Neutron Source School of ScienceXijing UniversityXi'an 710123China Faculty of Electrical and Electronic Engineering Phenikaa Institute for Advanced Study(PIAS)Phenikaa UniversityYen NghiaHa Dong districtHanoi 100000Vietnam Phenikaa Research and Technology Institute(PRATI) A&A Green Phoenix Group167 Hoang NganHanoi 100000Vietnam

This paper proposes three fractional discrete chaotic systems based on the Rulkov,Chang,and Zeraoulia–Sprott rational *** dynamics of the proposed maps are investigated by means of phase plots and bifurcations *** stabilization schemes are proposed for each of the three maps and the convergence of the states is established by using the Lyapunov ***,a combination synchronization scheme is proposed whereby a combination of the fractional Rulkov and Chang maps is synchronized to the fractional Zeraoulia-Sprott *** results are used to confirm the findings of the paper.

关键词： Fractional discrete chaos fractional rational maps stabilization synchronization

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Numerical Simulation of Spear Motion as Game Items

Numerical Simulation of Spear Motion as Game Items

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International Symposium on Nanoscience and Nanotechnology in Life Sciences 2017, ISNNLS 2017

作者： Muhima, R.R. Mardi, S. Hariadi, M. Puspitasari, I. Informatics Engineering Department ITATS Arief Rachman Hakim 100 Surabaya Indonesia Electrical Engineering Department Sepuluh Nopember Institute of Technology Indonesia Information System Study Program Faculty of Science and Technology Universitas Airlangga Jl. Mulyorejo Surabaya60115 Indonesia

Game development in 3D is mostly done by characters, items and the environment. Game items such as character weapons modeled in 3D will be the attraction of a game. In this paper, spear motion as a game items is modeled in 3D. Nonlinear Equations Six Degrees of Freedom (6 DOF) are used for mathematical models of spear motion. The parameters studied in the motion model are: geometry, mass and aerodynamics. Spear aerodynamic parameters were analyzed using the Datcom method. Numerical simulation of mathematical models of spear motion with variations in the initial velocity of the throw and the direction of the throw. From the results of numerical simulation, the maximum range R = 131.7 m at the initial velocity V0 = 40 m/s, the direction of throw (angle θ0 = 35 deg, angle φ0 = 10 deg, ψ0 = 0 deg). And the maximum height Hmax = 12.18 m is achieved at the initial velocity V0 = 20 m/s, direction of throw (angle θ0 = 35 deg, angle φ0 = 40 deg, angle ψ0 = 0 deg). © 2020 Published under licence by IOP Publishing Ltd.

关键词： Aerodynamics

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Develop learning methods imr (integrated material realistic) alternative mathematics learning during a pandemic 7

Develop learning methods imr (integrated material realistic)...

引用

7th International Conference on mathematics, Science, and Education 2020, ICMSE 2020

作者： Rusmana, I.M. Zainuri Wardono Nulhakim, A.L. Doctoral Program Universitas Negeri Semarang Indonesia Department of Mathematic Education Faculty of Mathematics and Natural Science Universitas Indraprasta Pgri Jakarta Indonesia Department of Mathematic Education Faculty of Mathematics and Natural Science Universitas Negeri Semarang Indonesia Department of Informatics Engineering Faculty of Engineering and Computer Science Universitas Indraprasta Pgri Jakarta Indonesia

The learning methods used by teachers in schools in Serang City are very ineffective, especially during the pandemic. This is because not integrated content of material in one subject with other subjects. Never mind between subjects, sometimes the material is not well integrated. The purpose of this study is to provide an alternative learning method during a pandemic, namely a method that integrates material with the realities of life which is abbreviated as IMR (Integrated Realistic Material). The method in this research is Research and Development (RnD) with the ADDIE model. In making this learning method according to the stages from the ADDIE study. The results of this study are in the form of learning methods that are integrated with the realities of life during the pandemic. © Published under licence by IOP Publishing Ltd.

关键词： Learning systems

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The development of virtual laboratory on fluid materials 6

The development of virtual laboratory on fluid materials

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6th International Seminar on mathematics, Science, and Computer Science Education, MSCEIS 2018

作者： Jannati, E.D. Setiawan, A. Siahaan, P. Rochman, C. Susanti, D. Samantha, Y. Mechanical Engineering Study Program Majalengka University Majalengka Indonesia Department of Mechanical Engineering Education Universitas Pendidikan Indonesia Bandung Indonesia Department of Physics Education Universitas Pendidikan Indonesia Bandung Indonesia Department of Physics Education UIN Sunan Gunung Djati Bandung Indonesia Department of Informatics Engineering Majalengka University Majalengka Indonesia

This study aims to study the development of laboratory learning media on the concept of fluids. The method used in this study is the research and development (R & D) method of implementation up to step 7, namely: (1) literature study, (2) needs analysis, (3) design of virtual lab learning media, (4) development of lab learning media virtual, (5) validation, (6) product testing, (7) product revision. Virtual laboratory learning media, have gone through a phase validation test by two material experts and one media expert who showed that laboratory learning media on fluid materials are feasible to be applied in learning. the results of sponsored pretest and posttest for students showed a significant increase. Recommended to be applied in a virtual learning laboratory is suitable to be applied in the Faculty of engineering, Majalengka University. © 2019 IOP Publishing Ltd.

关键词： Laboratories

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Phosphotungstic acid (H₃PW₁₂O₄₀)-loaded onto titanium porous montmorillonite heterostructure for the effective enhanced kinetics and thermodynamic conversion of citronellal

引用

Case Studies in Chemical and Environmental engineering 2025年 11卷

作者： Fatimah, Is Yahya, Amri Rubiyanto, Dwiarso Sagadevan, Suresh Oh, Won-Chun Doong, Ruey-an Department of Chemistry Faculty of Mathematics and Natural Sciences Universitas Islam Indonesia Kampus Terpadu UII Jl. Kaliurang Km 14 Sleman Yogyakarta Indonesia Nanomaterials and Sustainable Chemistry Research Centre Chemistry Laboratory Universitas Islam Indonesia Kampus Terpadu UII Jl. Kaliurang Km 14 Sleman Yogyakarta Indonesia Chemistry Study Program Nusa Bangsa University JL. KH Sholeh Iskandar KM.4 Tanah Sareal Bogor 16166 Indonesia Nanotechnology & Catalysis Research Centre University of Malaya Kuala Lumpur 50603 Malaysia Department of Advanced Materials Science and Engineering Hanseo University Seosan-si 356-706 South Korea Institute of Analytical and Environmental Sciences National Tsing Hua University 101 Sec 2 Kuang Fu Road Hsinchu 30013 Taiwan

In present work, nanocomposite of phosphotungstic acid (H3PW12O40)-loaded onto titanium-porous clay heterostructure (PTA/Ti–PCH) was prepared using natural montmorillonite as parent material (Mnt). Characterization o... 详细信息

In present work, nanocomposite of phosphotungstic acid (H₃PW₁₂O₄₀)-loaded onto titanium-porous clay heterostructure (PTA/Ti–PCH) was prepared using natural montmorillonite as parent material (Mnt). Characterization of the material was performed using X-ray diffraction, X-ray photoelectron spectroscopy, scanning electron microscopy-energy dispersive X-ray fluorescence, transmission electron microscopy, Fourier-Transform Infra-Red spectroscopy, and solid acidity measurement. The material was examined as superacid catalyst in citronellal conversion into isopulegol by varied reaction conditions. Kinetics and thermodynamic studies of catalyzed reaction revealed the role of increased total surface acidity and the Lewis to Brønsted to enhance the reaction conversion and selectivity. Thermodynamic study demonstrated a lower activation energy of the reaction over PTA/Ti–PCH compared to Ti–PCH. A 100 % conversion was exhibited by the sample during 120 min of the reaction at 90°C, and the sample also demonstrated activity at room temperature. Reusability of the sample was expressed by a maintained conversion until 5th cycle. Conclusively, the prepared material showed a potency to be developed for heterogeneously acid-catalyzed organic reactions. © 2025 The Authors

关键词： Acid Citronellal Clay-based nanocomposite Heterogeneous catalysis Porous clay heterostructure

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Design strategies and willingness to pay for circular economy service policies in sustainable tourism

Environmental Challenges

引用

Environmental Challenges 2025年 18卷

作者： Suhardono, Sapta Phan, Thi Thanh Thuy Lee, Chun-Hung Suryawan, I Wayan Koko Environmental Sciences Study Program Faculty of Mathematics and Natural Sciences Universitas Sebelas Maret Surakarta 57126 Indonesia Faculty of Natural Resources & Environment Dong Nai Campus Vietnam National University of Forestry Bien Hoa Dong Nai 810000 Viet Nam Department of Natural Resources and Environmental Studies College of Environmental Studies and Oceanography National Dong Hwa University Taiwan Hualien 97401 Taiwan Department of Environmental Engineering Faculty of Infrastructure Planning Universitas Pertamina Jalan Sinabung II Jakarta Terusan Simprug 12220 Indonesia Center for Environmental Solution (CVISION) Universitas Pertamina Jalan Sinabung II Terusan Simprug Jakarta 12220 Indonesia Center for Interdisciplinary Research on Ecology and Sustainability College of Environmental Studies and Oceanography National Dong Hwa University Taiwan Hualien 97401 Taiwan

The transition towards a circular economy within the tourism industry is increasingly seen as essential to achieving sustainable development goals. This study explores the relationships between various design strategies, tourists' willingness to pay (WTP) for sustainable practices, and their participation in circular economy activities. Using Structural Equation Modeling (SEM) to analyze data collected from 640 tourists in Bali, the research identifies the critical factors that influence tourists' engagement with sustainability. The findings reveal that design strategies focused on longevity, serviceability, reusability, and material recovery significantly enhance WTP for sustainable practices. In turn, WTP is shown to be a key driver of participation in circular economy activities, such as purchasing recycled items and green purchasing behaviors. However, barriers such as cost concerns, lack of awareness, and limited incentives pose significant challenges to widespread adoption. © 2025 The Authors

关键词： Circular economy Design strategies Structural equation modeling Sustainable tourism Willingness to pay

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Selecting for positive responses to knock outs in boolean networks 1

引用

14th International Workshop on Artificial Life and Evolutionary Computation, WIVACE 2019

作者： Villani, Marco Magrì, Salvatore Roli, Andrea Serra, Roberto Department of Physics Informatics and Mathematics University of Modena and Reggio Emilia Modena Italy European Centre for Living Technology Venice Italy Department of Computer Science and Engineering University of Bologna Cesena Italy Institute for Advanced Study University of Amsterdam Amsterdam Netherlands

ISBN: (数字)9783030450168

ISBN: (纸本)9783030450151

Random Boolean networks are a widely acknowledged model for cell dynamics. Previous studies have shown the possibility of achieving Boolean Networks (BN) with given characteristics by means of evolutionary techniques. In this work we show that it is possible to evolve BNs exhibiting more positive than negative reactions to knock-out stresses. It is also interesting to observe that in the observed runs (i) the evolutionary processes can guide the BNs toward different dynamic regimes, depending on their internal structure and that (ii) the BNs forced to evolve by maintaining a critical dynamical regime achieve better results than those that do not have this characteristic;this observation supports the idea that criticality may be beneficial to an evolving population of dynamical systems. © Springer Nature Switzerland AG 2020.

关键词： Dynamical systems

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Observing Generator Performance by Finite Element Analysis Considering Coil Numbers 5

Observing Generator Performance by Finite Element Analysis C...

引用

5th International Conference on Technology and Policy in Energy and Electric Power, ICT-PEP 2023

作者： Habibi, Muhammad Afnan Ali Irfani, Mochamad Farhan Gumilar, Langlang Kusumawardana, Arya Aripriharta Baskoro, Angger Universitas Negeri Malang Study Program of Power Plant Engineering Technology Malang Indonesia Universitas Negeri Malang Department of Electrical Engineering and Informatics Malang Indonesia National Yang Ming Chiao Tung University Dept. Electrical Engineering and Computer Sciences Hsinchu Taiwan

ISBN: (纸本)9798350369717

This paper conducts a comprehensive analysis of electrical generator performance using Finite Element Analysis (FEA), with a specific emphasis on the role of coil numbers in influencing generator efficiency and functionality. In the context of modern energy systems, where efficient power generation is paramount, this research aims to elucidate the relationship between the number of coils within a generator and its overall performance, including power output and electromagnetic behavior. Through systematic FEA simulations that vary coil numbers while keeping other parameters constant, this study provides valuable insights into the trade-offs associated with increased coil numbers and enhanced efficiency. These findings have significant implications for optimizing generator designs across various applications, from renewable energy systems to industrial power generation, ultimately advancing our understanding of generator dynamics and contributing to more sustainable and efficient power generation technologies. © 2023 IEEE.

关键词： Finite element method

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Carrying Javanese Local Wisdom in Mathematical Model 1

Carrying Javanese Local Wisdom in Mathematical Model

引用

1st International Conference on Computer, Science, engineering and Technology, ICComSET 2018

作者： Prabowo, A. Mamat, M. Sukono Ngadiman Department of Mathematics Faculty of Mathematics and Natural Sciences Universitas Jenderal Soedirman Indonesia Faculty of Informatics and Computing Universiti Sultan Zainal Abidin Terengganu Darul Iman Kuala Terengganu Malaysia Department of Mathematics Faculty of Mathematics and Natural Sciences Universitas Padjadjaran West-Java Indonesia Physical Health and Recreation Education Study Program Faculty of Health Sciences Universitas Jenderal Soedirman Purwokerto Central-Java Indonesia

People of Cikakak Traditional Village, Wangon District, Banyumas Regency, Central-Java Province are known as the followers of Islam Aboge (Alif Rebo Wage). Their religious holidays such as the beginning of fasting month (Ramadan) and Eid al-Fitr are determined based on the rules they have been using so far, namely Month Code or Sandi Bulan and Year Code or Sandi Tahun. This research is conducted using literature study method and field study in the form of interview with respondents. This research aims at producing a mathematical model which matches the function of these two codes. The results obtained are five mathematical equations to determine the names of year, saptawara and pancawara days for the 1st day of each month, and saptawara and pancawara days for other dates. © 2019 IOP Publishing Ltd. All rights reserved.

关键词： Functions

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Prediction of Consumer Purchase Intention on Green Product

Prediction of Consumer Purchase Intention on Green Product

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2021 International Seminar on Application for Technology of Information and Communication, iSemantic 2021

作者： Hariyadi, Guruh Taufan Purwanto Isnanto, R Rizal Wibowo, Adi Warsito, Budi Universitas Diponegoro Doctoral Program of Information Systems Semarang Indonesia Universitas Diponegoro Faculty of Engineering Department of Chemical Engineering Semarang Indonesia Universitas Diponegoro Faculty of Engineerig Department of Computer Engineering Semarang Indonesia Universitas Diponegoro Faculty of Science and Mathematics Departement of Informatics Semarang Indonesia

ISBN: (纸本)9781665428040

Education to the public on green products has been widely carried out. Consumers who buy green products can be profiled by segmenting green consumers. In green marketing, consumer education on sustainable consumption is increasingly needed in recent years due to the problem of environmental pollution which poses a serious threat to the world population. Concern for the environment is an important topic in most countries, and individuals also study environmental issues. Individuals or groups of individuals who are 'ecologically aware' are also referred to as 'green consumers.' Such consumers are considered to have more concern for the environment. This study examined the predictions on the effect of the Green Perceived Value variables consisting of functional, conditional, and social values on the purchase intention of green consumers. It also tested the comparisons with other classification models. The models used in this research were Random Forest, Decision Tree, and Neural Network.. © 2021 IEEE.

关键词： Consumer behavior

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