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Journal articles on the topic 'Spherical environment'

Author: Grafiati

Published: 28 May 2022

Last updated: 31 July 2025

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1

Chi, Xing, and Qiang Zhan. "Design and Modelling of an Amphibious Spherical Robot Attached with Assistant Fins." Applied Sciences 11, no. 9 (2021): 3739. http://dx.doi.org/10.3390/app11093739.

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Mobile robots that can survive in unstructured wildernesses is essential in many applications such as environment detecting and security surveillance. In many of these applications, it is highly desirable that the robot can adapt robustly to both terrestrial environment and aquatic environment, and translocate swiftly between various environments. A novel concept of amphibious spherical robot with fins is proposed in this paper, capable of both terrestrial locomotion and aquatic locomotion. Unlike the traditional amphibious robots, whose motions are commonly induced by propellers, legs or snak

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2

Fang, Yiming, Qing Li, and Zhemin Chen. "Development of a Coal Mine environment Spherical Simulator." Journal of Physics: Conference Series 1639 (October 2020): 012089. http://dx.doi.org/10.1088/1742-6596/1639/1/012089.

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3

Wu, John F., Christian Kragh Jespersen, and Risa H. Wechsler. "How the Galaxy–Halo Connection Depends on Large-scale Environment." Astrophysical Journal 976, no. 1 (2024): 37. http://dx.doi.org/10.3847/1538-4357/ad7bb3.

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Abstract We investigate the connection between galaxies, dark matter halos, and their large-scale environments at z = 0 with Illustris TNG300 hydrodynamic simulation data. We predict stellar masses from subhalo properties to test two types of machine learning (ML) models: explainable boosting machines (EBMs) with simple galaxy environment features and E ( 3 ) -invariant graph neural networks (GNNs). The best-performing EBM models leverage spherically averaged overdensity features on 3 Mpc scales. Interpretations via SHapley Additive exPlanations also suggest that in the context of the TNG300 g

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Mečina, M., B. Aringer, M. Brunner, F. Kerschbaum, M. A. T. Groenewegen, and W. Nowotny. "Dust properties in the circumstellar environment of carbon stars." Proceedings of the International Astronomical Union 14, S343 (2018): 466–67. http://dx.doi.org/10.1017/s1743921318005082.

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AbstractHerschel PACS imaging observations of carbon stars show well-resolved spherically symmetric detached shells around several objects. In the case of U Hya the shell is additionally detected in scattered visible light and in the far UV. The remarkable spherical symmetry justifies a straightforward application of 1D models to constrain the properties of the dust envelope, whose modulation in density is a consequence of short epochs of highly increased mass loss and/or wind-wind interaction between outflows of different velocity. We perform dust radiative transfer calculations, first based

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5

Zhan, Qiang, and Ze Ning Liu. "A Deformable Spherical Mobile Robot." Applied Mechanics and Materials 590 (June 2014): 422–26. http://dx.doi.org/10.4028/www.scientific.net/amm.590.422.

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This paper presents a deformable spherical mobile robot that can be used in field environment. It can contract to be a small ball when storing and expand to be a hedgehog-like mobile robot when moving so as to employ rotating claws to improve its filed environment adaptability. Based on statics analysis, the factors influencing the performance of the robot are figured out. Its virtual prototype was built in ADAMS in order to validate such performances as linear motion and obstacle crossing motion. Simulation results show its good stability and excellent motion performance.

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Manbir Kaur, Et al. "Mathematical Modelling Of Municipal Solid Waste Management In Spherical Fuzzy Environment." Advances in Nonlinear Variational Inequalities 26, no. 4 (2024): 47–64. http://dx.doi.org/10.52783/anvi.v26.i4.308.

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A Spherical fuzzy model induced with teaching learning based optimization technique is developed for supporting the municipal solid waste management under fuzzy environment. Spherical fuzzy set’s ability to capture imprecise and contradictory information results in a substantial contribution to decision-making issues. Thus, we introduce SFLPP in a spherical fuzzy environ-ment in this article, which entails maximization of truthiness and minimization of indeterminacy and falsity membership functions.In present era TLBO is gaining the popularity of being less complex and only two algorithmic par

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Amereh, Meitham, Yakine Bahri, Roderick Edwards, Mohsen Akbari, and Ben Nadler. "Asymmetric Growth of Tumor Spheroids in a Symmetric Environment." Mathematics 10, no. 12 (2022): 1955. http://dx.doi.org/10.3390/math10121955.

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In this work, we studied the stability of radially symmetric growth in tumor spheroids using a reaction-diffusion model. In this model, nutrient concentration and internal pressure are local variables that implicitly relate the proliferation of cells to the growth of the tumor. The analytical solution of the governing model was presented in an orthonormal spherical harmonic basis. It was shown that the radially symmetric steady-state solution to the growth of tumor spheroids, under symmetric growth conditions, was unstable with respect to small asymmetric perturbations. Such perturbations exci

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8

Anani, Kwassi. "COMBINED METHOD OF INTEGRAL TRANSFORMS FOR THE SPHERICALLY SYMMETRIC DROPLET HEATING PROBLEM." Advances in Mathematics: Scientific Journal 10, no. 9 (2021): 3141–64. http://dx.doi.org/10.37418/amsj.10.9.5.

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In this paper, we analysed the spherically symmetric heat diffusion equation, which governs the temperature distribution inside a heated but non-evaporating droplet. The spherical droplet, with an initial uniform temperature, is assumed at rest in an unsteady gas environment. The classical Fourier sine integral transform (FSIT) and the unilateral Laplace integral transform (LIT) are successively used to solve the resulting initial-boundary value problem, first reduced in a dimensionless form. An explicit solution in the Laplace domain is obtained for the temperature inside the droplet. Then, d

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9

Zeng, Shouzhen, Muhammad Munir, Tahir Mahmood, and Muhammad Naeem. "Some T-Spherical Fuzzy Einstein Interactive Aggregation Operators and Their Application to Selection of Photovoltaic Cells." Mathematical Problems in Engineering 2020 (June 9, 2020): 1–16. http://dx.doi.org/10.1155/2020/1904362.

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In this article, it is pointed out that the existing intuitionistic fuzzy and T-spherical fuzzy Einstein averaging and geometric operators have some limitations. To overcome these limitations, we proposed some new averaging and geometric operators in the T-spherical fuzzy environment instead of the intuitionistic fuzzy environment because the T-spherical fuzzy set is the most generalized form and the proposed operators can be particularized to the intuitionistic fuzzy environment. First, new operational laws for T-spherical fuzzy information are defined, on the basis of which Einstein geometri

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10

Scheid, Werner, Aurelian Isar, and Aurel Sandulescu. "Diffusion and dissipation by linear momentum in spherical environment." International Journal of Modern Physics B 28, no. 11 (2014): 1450077. http://dx.doi.org/10.1142/s0217979214500775.

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An open quantum system is studied consisting of a particle moving in a spherical space with an infinite wall. With the theory of Lindblad the system is described by a density matrix which gets affected by operators with diffusive and dissipative properties depending on the linear momentum and density matrix only. It is shown that an infinite number of basis states leads to an infinite energy because of the infinite unsteadiness of the potential energy at the infinite wall. Therefore only a solution with a finite number of basis states can be performed. A slight approximation is introduced into

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11

Samaniego, Joseph I., Xu Wang, and Scott Robertson. "Sheath Around a Spherical Probe in a Photoelectron Environment." IEEE Transactions on Plasma Science 48, no. 2 (2020): 418–25. http://dx.doi.org/10.1109/tps.2019.2963016.

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12

Chini, S. Farshid, and A. Amirfazli. "Understanding the evaporation of spherical drops in quiescent environment." Colloids and Surfaces A: Physicochemical and Engineering Aspects 432 (September 2013): 82–88. http://dx.doi.org/10.1016/j.colsurfa.2013.05.013.

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13

Sulaeman, Uyi, Baynuri Ikhya Ulumuddin, Roy Andreas, Irmanto Irmanto, and Ponco Iswanto. "Adsorption of Rhodamine B on Spherical Activated Carbon synthesized from Waste Bagasse Liquid using Hydrothermal Process." Molekul 18, no. 1 (2023): 1. http://dx.doi.org/10.20884/1.jm.2023.18.1.5510.

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The dyes of the textile dyeing industry wastewater are harmful to humans and the environment. They should be treated before discharging into the environment. The adsorption using the spherical activated carbon can be effective to reduce the dyes. The spherical activated carbon of 3-7 µm in diameter was successfully prepared from the waste bagasse liquid using the hydrothermal method. The activation of this carbon was carried out using the KOH solution. The optimum pH and contact time were achieved in 2 and 200 min, respectively. Adsorption kinetic for RhB on activated spherical carbon follows

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14

Zhao, Zi Jian, and Juha Roning. "A New Approach for 3D Environment Measurement in Mobile Robot Applications." Applied Mechanics and Materials 740 (March 2015): 186–90. http://dx.doi.org/10.4028/www.scientific.net/amm.740.186.

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Here we propose a new approach for measuring the environment for the mobile robot. Without using any old framework of sensors; we utilized the latest vision system -- the spherical camera system - which consists of several cameras around a certain geometric surface. Equipped with a lift device, the spherical camera system can measure the environment around itself. We present some results of simulated and real experiments showing the validity of our method. Our approach is acceptable and exciting, and will be applied in the mobile robot’s application in the future.

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15

Yanagawa, Kazunori, Ayane Fujihira, Hideki Yamaguchi, and Nozomu Yoshizawa. "Describing the characteristics of light field in architectural spaces using spherical harmonic function." IOP Conference Series: Earth and Environmental Science 1099, no. 1 (2022): 012014. http://dx.doi.org/10.1088/1755-1315/1099/1/012014.

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Abstract The direction, density, and diffusivity of light are important indicators of spatial characteristics in describing a three-dimensional light environment. Mury presented a method for describing, measuring, and visualizing the structure of light fields using spherical harmonics in terms of changes in the density and direction of light in three-dimensional space. We extended this study by using higher-order spherical harmonics, which would represent more diverse characteristics of the light environment. We also quantitatively described the light environment as numerical values and invest

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16

Sohaib, Muhammad, Manjurul Islam, Jaeyoung Kim, Duck-Chan Jeon, and Jong-Myon Kim. "Leakage Detection of a Spherical Water Storage Tank in a Chemical Industry Using Acoustic Emissions." Applied Sciences 9, no. 1 (2019): 196. http://dx.doi.org/10.3390/app9010196.

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Spherical storage tanks are used in various industries to store substances like gasoline, oxygen, waste water, and liquefied petroleum gas (LPG). Cracks in the storage tanks are unaccepted defects, as storage tanks can leak or spill the contained substance through these cracks. Leakage from contained hazardous substances storage tanks can contaminate the environment and may lead to fatal accidents. Therefore, the ability to detect cracks from spherical storage tanks is necessary to avoid damage to the environment and to ensure public safety. In this paper, we present a crack detection case stu

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17

Nickel, Anne C., Alan R. Denton, Judith E. Houston, et al. "Beyond simple self-healing: How anisotropic nanogels adapt their shape to their environment." Journal of Chemical Physics 157, no. 19 (2022): 194901. http://dx.doi.org/10.1063/5.0119527.

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The response of soft colloids to crowding depends sensitively on the particles’ compressibility. Nanogel suspensions provide model systems that are often studied to better understand the properties of soft materials and complex fluids from the formation of colloidal crystals to the flow of viruses, blood, or platelet cells in the body. Large spherical nanogels, when embedded in a matrix of smaller nanogels, have the unique ability to spontaneously deswell to match their size to that of the nanogel composing the matrix. In contrast to hard colloids, this self-healing mechanism allows for crysta

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18

Furlong, T. J., J. M. Vance, and P. M. Larochelle. "Spherical Mechanism Synthesis in Virtual Reality." Journal of Mechanical Design 121, no. 4 (1999): 515–20. http://dx.doi.org/10.1115/1.2829491.

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This paper presents a new approach to using virtual reality (VR) to design spherical mechanisms. VR provides a three-dimensional (3-D) design space where a designer can input design positions using a combination of hand gestures and motions and view the resultant mechanism in stereo using natural head movement to change the viewpoint. Because of the three-dimensional nature of the design and verification of spherical mechanisms, VR is examined as a new design interface in this research. In addition to providing a VR environment for design, the research presented in this paper has focused on de

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19

Resali, Nor Azrina, Koay Mei Hyie, M. N. Berhan, N. R. Nik Roselina, and Che Murad Mardziah. "Corrosion Behavior of Electrodeposited CoNiFe Nanoparticles Immersed in Different Environments." Applied Mechanics and Materials 607 (July 2014): 33–36. http://dx.doi.org/10.4028/www.scientific.net/amm.607.33.

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Replacement or repair of corrosion damaged equipment is the largest maintenance requirement for the industry. One technique for reducing the corrosion of metals is to coat them with thin layers of less reactive metals or alloys. Unfortunately, most metallic coatings are inherently porous and historically have been of little value as barriers against corrosion. Recently, with the development of new alternative material such as electrodeposited CoNiFe, these problems have largely been overcome. This paper investigated the effects of different aggressive environments on the corrosion behavior of

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20

Zarubin, V. S., V. V. Leonov, and V. S. Jr Zarubin. "Temperature State of the Anisotropic Spherical Layer During Convective Heat Exchange with the Environment." Herald of the Bauman Moscow State Technical University. Series Natural Sciences, no. 4 (85) (August 2019): 40–55. http://dx.doi.org/10.18698/1812-3368-2019-4-40-55.

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The paper focuses on the process of steady heat conduction in a spherical layer of a heat-shielding coating made of anisotropic material. The inner surface of the layer is ideally heat-insulated but its outer surface is exposed to heating by convective heat exchange with the environment, the temperature of which varies along this surface. Based on the obtained solution of the linear heat conduction problem, we quantitatively assessed the influence of the degree of anisotropy of the coating material, its relative thickness, intensity of convective heat transfer, and uneven distribution of ambie

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21

Kharlanov, Alexander V. "Electromagnetic eigenmodes of spherical thin films." ITM Web of Conferences 30 (2019): 06014. http://dx.doi.org/10.1051/itmconf/20193006014.

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Eigenmodes of the spherical and ellipsoidal dielectric thin films have been analyzed. The results of calculations of frequencies of natural electromagnetic oscillations of spherical thin films depending on their sizes and dielectric permeability of external environment are presented.

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22

Polishchuk, Oleksandr, Vasiliy Kozyar, and Dmytro Zhaboiedov. "Method for reducing longitudinal spherical aberration of intraocular lenses." Eastern-European Journal of Enterprise Technologies 1, no. 5(115) (2022): 14–22. http://dx.doi.org/10.15587/1729-4061.2022.251521.

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It has been established that of all types of aberrations following the implantation of intraocular lenses, the most significant is spherical, inherent in the spherical optics in various aspects. This paper proposes a method for reducing the longitudinal spherical aberration of intraocular lenses by applying an additional optical layer onto their surface. To reduce spherical aberration, the thickness of a layer of polytetrafluoroethylene (Teflon) was simulated in the programming environment Zemax 13 (USA). Calculations that were performed included refractive indices of the environment and the m

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23

Rau, J. Y., B. W. Su, K. W. Hsiao, and J. P. Jhan. "SYSTEMATIC CALIBRATION FOR A BACKPACKED SPHERICAL PHOTOGRAMMETRY IMAGING SYSTEM." ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XLI-B1 (June 6, 2016): 695–702. http://dx.doi.org/10.5194/isprs-archives-xli-b1-695-2016.

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A spherical camera can observe the environment for almost 720 degrees’ field of view in one shoot, which is useful for augmented reality, environment documentation, or mobile mapping applications. This paper aims to develop a spherical photogrammetry imaging system for the purpose of 3D measurement through a backpacked mobile mapping system (MMS). The used equipment contains a Ladybug-5 spherical camera, a tactical grade positioning and orientation system (POS), i.e. SPAN-CPT, and an odometer, etc. This research aims to directly apply photogrammetric space intersection technique for 3D mapping

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24

Rau, J. Y., B. W. Su, K. W. Hsiao, and J. P. Jhan. "SYSTEMATIC CALIBRATION FOR A BACKPACKED SPHERICAL PHOTOGRAMMETRY IMAGING SYSTEM." ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XLI-B1 (June 6, 2016): 695–702. http://dx.doi.org/10.5194/isprsarchives-xli-b1-695-2016.

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A spherical camera can observe the environment for almost 720 degrees’ field of view in one shoot, which is useful for augmented reality, environment documentation, or mobile mapping applications. This paper aims to develop a spherical photogrammetry imaging system for the purpose of 3D measurement through a backpacked mobile mapping system (MMS). The used equipment contains a Ladybug-5 spherical camera, a tactical grade positioning and orientation system (POS), i.e. SPAN-CPT, and an odometer, etc. This research aims to directly apply photogrammetric space intersection technique for 3D mapping

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25

Kariotou, Foteini, and Panayiotis Vafeas. "The Avascular Tumour Growth in the Presence of Inhomogeneous Physical Parameters Imposed from a Finite Spherical Nutritive Environment." International Journal of Differential Equations 2012 (2012): 1–25. http://dx.doi.org/10.1155/2012/175434.

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A well-known mathematical model of radially symmetric tumour growth is revisited in the present work. Under this aim, a cancerous spherical mass lying in a finite concentric nutritive surrounding is considered. The host spherical shell provides the tumor with vital nutrients, receives the debris of the necrotic cancer cells, and also transmits to the tumour the pressure imposed on its exterior boundary. We focus on studying the type of inhomogeneity that the nutrient supply and the pressure field imposed on the host exterior boundary, can exhibit in order for the spherical structure to be supp

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26

Sindhu, Muhammad Sarwar, Tabasam Rashid, and Agha Kashif. "Multiple criteria decision making based on Hamy mean operators under the environment of spherical fuzzy sets." Journal of Intelligent & Fuzzy Systems 41, no. 1 (2021): 273–98. http://dx.doi.org/10.3233/jifs-201708.

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Aggregation operators are widely applied to accumulate the vague and uncertain information in these days. Hamy mean (HM) operators play a vital role to accumulate the information. HM operators give us a more general and stretchy approach to develop the connections between the arguments. Spherical fuzzy sets (SpFSs), the further extension of picture fuzzy sets (PcFSs) that handle the data in which square sum of membership degree (MD), non-membership degree (NMD) and neutral degree (ND) always lie between closed interval [0, 1]. In the present article, we modify the HM operators like spherical f

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27

Zaripov, S. K., A. K. Gilfanov, and I. T. Mukhametzanov. "PERFORMANCE OF SPHERICAL AEROSOL SAMPLER IN LOW-VELOCITY AGRICULTURE ENVIRONMENT." Acta Horticulturae, no. 1054 (October 2014): 333–39. http://dx.doi.org/10.17660/actahortic.2014.1054.40.

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28

Hamdan, Mohammad, and Moh'd A. Al-Nimr. "Critical Coating Radius of Spherical Particle in Thermal Radiation Environment." Journal of Thermophysics and Heat Transfer 23, no. 3 (2009): 634–38. http://dx.doi.org/10.2514/1.40459.

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29

MASAKI, Chihiro, Yasumasa WATANABE, and Kojiro SUZUKI. "Ballistic Range Experiment of Spherical Body in Particle-laden Environment." TRANSACTIONS OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES, AEROSPACE TECHNOLOGY JAPAN 16, no. 5 (2018): 420–26. http://dx.doi.org/10.2322/tastj.16.420.

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30

Grugel, Richard N., and Lucien N. Brush. "Solidification dynamics of spherical drops in a free fall environment." Microgravity - Science and Technology 19, no. 2 (2007): 32–44. http://dx.doi.org/10.1007/bf02911865.

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31

Rafaely, Boaz, Christopher Schymura, and Dorothea Kolossa. "Speaker localization in a reverberant environment using spherical statistical modeling." Journal of the Acoustical Society of America 141, no. 5 (2017): 3523. http://dx.doi.org/10.1121/1.4987419.

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32

Shishavan, Seyed Amin Seyfi, Fatma Kutlu Gündoğdu, Elmira Farrokhizadeh, Yaser Donyatalab, and Cengiz Kahraman. "Novel similarity measures in spherical fuzzy environment and their applications." Engineering Applications of Artificial Intelligence 94 (September 2020): 103837. http://dx.doi.org/10.1016/j.engappai.2020.103837.

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33

Szabó, Krisztina, Eszter Tőke, and Attila Gergely. "Evaluating Spherical Trees in the Urban Environment in Budapest (Hungary)." Plants 14, no. 2 (2025): 228. https://doi.org/10.3390/plants14020228.

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The world’s big cities, including Budapest, are becoming more crowded, with more and more people living in smaller and smaller spaces. There is an increasing demand for more green space and trees, with less vertical and less horizontal space. In addition, deteriorating environmental conditions are making it even more difficult for trees to grow and survive. Tree species in urban areas have multiple functions and high ecosystem services when in good health. Among taxa with diverse habits, sizes, crown shapes, growth vigor, longevity, urban tolerance, and canopy habit, our research aims to evalu

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34

Yang, Wei, and Yongfeng Pang. "T-Spherical Fuzzy Bonferroni Mean Operators and Their Application in Multiple Attribute Decision Making." Mathematics 10, no. 6 (2022): 988. http://dx.doi.org/10.3390/math10060988.

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To deal with complicated decision problems with T-Spherical fuzzy values in the aggregation process, T-Spherical fuzzy Bonferroni mean operators are developed by extending the Bonferroni mean and Dombi mean to a T-Spherical fuzzy environment. The T-spherical fuzzy interaction Bonferroni mean operator and the T-spherical fuzzy interaction geometric Bonferroni mean operator are first defined. Then, the T-spherical fuzzy interaction weighted Bonferroni mean operator and the T-spherical fuzzy weighted interaction geometric Bonferroni mean operator are defined. Based on the Dombi mean and the Bonfe

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35

Томилин, А. К. "Принцип организации канала подводной радиосвязи с использованием шаровых антенн". Журнал технической физики 93, № 3 (2023): 397. http://dx.doi.org/10.21883/jtf.2023.03.54852.255-22.

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The principle of operation of spherical antennas, which were used in experiments on the transmission of a short-wave radio signal in the marine environment, is theoretically described. A solution of a spherically symmetric electrodynamic problem based on the experimentally found potential component of the magnetic field is proposed. The characteristics of a potential wave process in an electrically conductive medium are determined. The law of transformation of an electromagnetic wave at the "conductor-dielectric" interface has been established.

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36

Oleksandr, Polishchuk, Kozyar Vasiliy, and Zhaboiedov Dmytro. "Method for reducing longitudinal spherical aberration of intraocular lenses." Eastern-European Journal of Enterprise Technologies 1, no. 5 (115) (2022): 14–22. https://doi.org/10.15587/1729-4061.2022.251521.

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It has been established that of all types of aberrations following the implantation of intraocular lenses, the most significant is spherical, inherent in the spherical optics in various aspects. This paper proposes a method for reducing the longitudinal spherical aberration of intraocular lenses by applying an additional optical layer onto their surface. To reduce spherical aberration, the thickness of a layer of polytetrafluoroethylene (Teflon) was simulated in the programming environment Zemax 13 (USA). Calculations that were performed included refractive indices of the environment and the m

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37

Tomilin A. K. "The principle of organizing an underwater radio communication channel using spherical antennas." Technical Physics 68, no. 3 (2023): 370. http://dx.doi.org/10.21883/tp.2023.03.55812.255-22.

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The principle of operation of spherical antennas, which were used in experiments on the transmission of a short-wave radio signal in the marine environment, is theoretically described. A solution of a spherically symmetric electrodynamic problem based on the experimentally found potential component of the magnetic field is proposed. The characteristics of a potential wave process in an electrically conductive medium are determined. The law of transformation of an electromagnetic wave at the &quot;conductor-dielectric&quot; interface has been established. Keywords: generalized electrody

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38

Artsimovich, Wladislav, and Yoko Hirono. "Improved Mirror Ball Projection for More Accurate Merging of Multiple Camera Outputs and Process Monitoring." International Journal of Automation Technology 19, no. 2 (2025): 120–25. https://doi.org/10.20965/ijat.2025.p0120.

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Using spherical mirrors in place of wide-angle cameras allows for cost-effective monitoring of manufacturing processes in hazardous environment, where a camera would normally not operate. This includes environments of high heat, vacuum, and strong electromagnetic fields. Moreover, it allows the layering of multiple camera types (e.g., color image, near-infrared, long-wavelength infrared, ultraviolet) into a single wide-angle output, whilst accounting for the different camera placements and lenses used. Normally, the different camera positions introduce a parallax shift between the images, but

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39

Ma, Wenke, Bingyang Li, Yuxue Cao, et al. "Velocity Control of a Multi-Motion Mode Spherical Probe Robot Based on Reinforcement Learning." Applied Sciences 13, no. 14 (2023): 8218. http://dx.doi.org/10.3390/app13148218.

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As deep space exploration tasks become increasingly complex, the mobility and adaptability of traditional wheeled or tracked probe robots with high functional density are constrained in harsh, dangerous, or unknown environments. A practical solution to these challenges is designing a probe robot for preliminary exploration in unknown areas, which is characterized by robust adaptability, simple structure, light weight, and minimal volume. Compared to the traditional deep space probe robot, the spherical robot with a geometric, symmetrical structure shows better adaptability to the complex groun

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40

Fatahi, Mohammadreza, Guven Akdogan, Christie Dorfling, and Petrie Van Wyk. "Numerical Study of Microplastic Dispersal in Simulated Coastal Waters Using CFD Approach." Water 13, no. 23 (2021): 3432. http://dx.doi.org/10.3390/w13233432.

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Microplastics are accumulated in coastal regions due to human activity. Although limited data from beach surveys show an increase in microplastics in marine habitats, continuous monitoring is required on microplastics loading and distribution in the marine environment. In this study, CFD numerical simulations using VOF and Airy wave models coupled with DPM were carried out to investigate the effects of various variables on microplastics motion and distribution in a simulated coastal marine environment. PET, PU, and PP microplastic particles were released from the oceanside to investigate the e

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Pheh, Ying Hong, Shane Kyi Hla Win, and Shaohui Foong. "Spherical Indoor Coandă Effect Drone (SpICED): A Spherical Blimp sUAS for Safe Indoor Use." Drones 6, no. 9 (2022): 260. http://dx.doi.org/10.3390/drones6090260.

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Even as human–robot interactions become increasingly common, conventional small Unmanned Aircraft Systems (sUAS), typically multicopters, can still be unsafe for deployment in an indoor environment in close proximity to humans without significant safety precautions. This is due to their fast-spinning propellers, and lack of a fail-safe mechanism in the event of a loss of power. A blimp, a non-rigid airship filled with lighter-than-air gases is inherently safer as it ’floats’ in the air and is generally incapable of high-speed motion. The Spherical Indoor Coandă Effect Drone (SpICED), is a nove

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Huang, Zi Fan, Yue Long Ma, Jian Qiang Zhang, Xi Gui Zheng, and Jun Liu. "Research on the Process of Ring-Involute Tooth Spherical Gear Based on Rapid Prototyping Processing." Key Engineering Materials 667 (October 2015): 575–81. http://dx.doi.org/10.4028/www.scientific.net/kem.667.575.

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The ring-involute tooth spherical gear with two degrees of freedom is considered as the research object. Through the combination of theory and experiment, a further study is conducted on it. According to the theory of rapid prototyping, comprehensive consideration of the ring-involute teeth spherical gear tooth profile surface forming principle and transmission features, traditional machining method, transmission error and the actual application, a fast processing method of the ring-involute tooth spherical gear is proposed. Spherical gear model is built in Solidworks surface modeling environm

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Mendez, Yuri. "The Single Particle Motion of Non-Spherical Particles in Low Reynolds Number Flow." Fluids 7, no. 10 (2022): 320. http://dx.doi.org/10.3390/fluids7100320.

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This research presents a mathematical framework that places the physics and the dynamics of viscosity within a physical environment that captures the effect of the shape and overall weight of non-spherical particles to calculate their settling velocity. It then takes insights derived from the framework to model analytical constructs to solve the motion of a single particle that settles in a fluid that moves horizontally as a whole. These analytical constructs are then shown to be applicable to spherical and non-spherical particles.

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Samala, Agariadne Dwinggo, Fadhli Ranuharja, Bayu Ramadhani Fajri, Yose Indarta, and Winda Agustiarmi. "ViCT—Virtual Campus Tour Environment with Spherical Panorama: A Preliminary Exploration." International Journal of Interactive Mobile Technologies (iJIM) 16, no. 16 (2022): 205–25. http://dx.doi.org/10.3991/ijim.v16i16.32889.

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ViCT or spelled "VISIT", is the name of a web-based application that is being developed to display various points and locations from the campus environment that can be accessed virtually. ViCT aims to help users, students, and the public explore campus with digital freedom of movement anytime and anywhere, educating users about campus facilities and services with an immersive technology experience that is eco-friendly and fun. The application development concept is unlimited visits and easily accessible via desktop and mobile, saving resources and costs. In this chapter, the focus of the resea

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Maki, Katuhiro, and Kaho Yamada. "Psychological evaluation of 42-channel spherical loudspeaker in low-reverberant environment." Acoustical Science and Technology 43, no. 2 (2022): 113–16. http://dx.doi.org/10.1250/ast.43.113.

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Persson, B. N. J. "Polarizability of small spherical metal particles: influence of the matrix environment." Surface Science Letters 281, no. 1-2 (1993): 173. http://dx.doi.org/10.1016/0167-2584(93)91191-p.

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Guo, Jian, Chunying Li, and Shuxiang Guo. "Path Optimization Method for the Spherical Underwater Robot in Unknown Environment." Journal of Bionic Engineering 17, no. 5 (2020): 944–58. http://dx.doi.org/10.1007/s42235-020-0079-3.

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Persson, B. N. J. "Polarizability of small spherical metal particles: influence of the matrix environment." Surface Science 281, no. 1-2 (1993): 153–62. http://dx.doi.org/10.1016/0039-6028(93)90865-h.

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Anh, Vu Thi Thuy, Dao Huy Bich, and Nguyen Dinh Duc. "Nonlinear stability of thin FGM annular spherical segment in thermal environment." Vietnam Journal of Mechanics 37, no. 4 (2015): 285–302. http://dx.doi.org/10.15625/0866-7136/37/4/5962.

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Filippov, A. V. "Charge distribution among non-spherical particles in a bipolar ion environment." Journal of Aerosol Science 25, no. 4 (1994): 611–15. http://dx.doi.org/10.1016/0021-8502(94)90002-7.

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