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Articoli di riviste sul tema "Poisson robotisé"

Autore: Grafiati

Pubblicato: 7 luglio 2024

Ultima modifica: 31 luglio 2025

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1

Hasse, Alexander, and Kristian Mauser. "Poisson Induced Bending Actuator for Soft Robotic Systems." Soft Robotics 7, no. 2 (2020): 155–67. http://dx.doi.org/10.1089/soro.2018.0163.

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Schiemer, Jonas F., Karen Stumm, Karin H. Somerlik-Fuchs, Klaus-Peter Hoffmann, Jan Baumgart, and Werner Kneist. "Robotic Setup Promises Consistent Effects of Multilocular Gastrointestinal Electrical Stimulation: First Results of a Porcine Study." European Surgical Research 61, no. 1 (2020): 14–22. http://dx.doi.org/10.1159/000506799.

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Background: Electrical stimulation (ES) of several gastrointestinal (GI) segments is a promising therapeutic option for multilocular GI dysmotility, but conventional surgical access by laparotomy involves a high degree of tissue trauma. We evaluated a minimally invasive surgical approach using a robotic surgical system to perform electromyographic (EMG) recordings and ES of several porcine GI segments, comparing these data to an open surgical approach by laparotomy. Materials and Methods: In 5 acute porcine experiments, we placed multiple electrodes on the stomach, duodenum, jejunum, ileum, an

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3

Refaai, Mohamad Reda A., M. N. Manjunatha, S. Radjarejesri, B. Ramesh, Ram Subbiah, and Nahom Adugna. "Nanorobots with Hybrid Biomembranes for Simultaneous Degradation of Toxic Microorganism." Advances in Materials Science and Engineering 2022 (September 23, 2022): 1–12. http://dx.doi.org/10.1155/2022/2391843.

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Nanorobotics is a modern technological sector that creates robots with elements that are close to or near the nanoscale scale of such a nanometer. To be more specific, nanorobotics has been the nanotechnology approach to designing and creating nanorobots. Also, with the fast growth of robotics technology, developing biomaterials micro- or nanorobots, which convert biological concepts into a robotic device, grows progressively vital. This proposes the development, manufacturing, and testing of a dual–cell membrane–functionalized nanorobot for multifunctional biological threat component eliminat

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4

Watson, Michael D., Sally J. Trufan, Nicole L. Gower, Joshua S. Hill, and Jonathan C. Salo. "Effect of Surgical Approach on Node Harvest in Robotic Gastrectomy." American Surgeon 85, no. 8 (2019): 794–99. http://dx.doi.org/10.1177/000313481908500827.

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There has been increasing utilization of minimally invasive surgical approaches. This study evaluates the effect of surgical approach on total lymph node harvest in gastrectomy. Patients undergoing gastrectomy for gastric adenocarcinoma between 2007 and 2018 were reviewed retrospectively. Data collected included age, gender, race, BMI, neoadjuvant therapy, tumor stage, surgical approach, and total number of lymph nodes harvested. The total number of harvested lymph nodes for open, laparoscopic, and robotic gastrectomy was compared using the Kruskal-Wallis test for univariate analysis and a Poi

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5

T., Venkataramana, Shashikumar A., Akhil G., and Harshavardhan G. "PROGRAMMABLE ROBOTIC ARM REPLICATING MASTER ROBOT." International Journal of Scientific Research and Modern Education 4, no. 1 (2019): 29–31. https://doi.org/10.5281/zenodo.2656210.

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A Robotic arm is a robotic manipulator usually programmable, with similar functions to a human arm. Servomotor is used for joint rotation .it has about same number of degree of freedom as in human arm. Humans pick up with outthinking about the steps invalid. In an order for a robot or a robotic arm to pick or more something. Some has to tell it to perform several actions in a particular order from moving the arm, to rotating the wrist to opening or closing the hand are finger. So we do control each joint through computer interface. The arm has 8 servo mechanisms for precise control of angular

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6

Liu, Wangyu, Zheng Liu, Zhengqiang Guo, Zhaoqi Chen, and Weigui Xie. "Application of Poisson’s ratio structures and decoupling algorithm for 3D force sensing." Measurement Science and Technology 35, no. 6 (2024): 065105. http://dx.doi.org/10.1088/1361-6501/ad3018.

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Abstract Flexible tactile electronic devices are extensively used in the fields of robotics, medical detection, and human-computer interaction. Monitoring contact parameters, including force magnitude, direction, and contact location, is particularly vital for skin-like tactile sensing devices. Herein, a 3D force sensor is designed based on porous structure with deliberately designed Poisson’s ratios. A genetic algorithm (GA) optimized back propagation neuronal network (BPNN) model is proposed to support the 3D force decoupling, which can greatly improve the decoupling accuracy. The introducti

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7

Vázquez-Arellano, Manuel, David Reiser, Dimitrios Paraforos, Miguel Garrido-Izard, and Hans Griepentrog. "Leaf Area Estimation of Reconstructed Maize Plants Using a Time-of-Flight Camera Based on Different Scan Directions." Robotics 7, no. 4 (2018): 63. http://dx.doi.org/10.3390/robotics7040063.

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The leaf area is an important plant parameter for plant status and crop yield. In this paper, a low-cost time-of-flight camera, the Kinect v2, was mounted on a robotic platform to acquire 3-D data of maize plants in a greenhouse. The robotic platform drove through the maize rows and acquired 3-D images that were later registered and stitched. Three different maize row reconstruction approaches were compared: reconstruct a crop row by merging point clouds generated from both sides of the row in both directions, merging point clouds scanned just from one side, and merging point clouds scanned fr

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8

Kazerooni, H., Mark S. Evans, and J. Jones. "Hydrostatic Force Sensor for Robotic Applications." Journal of Dynamic Systems, Measurement, and Control 119, no. 1 (1997): 115–19. http://dx.doi.org/10.1115/1.2801201.

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This article presents a theoretical and experimental investigation of a new kind of force sensor which detects forces by measuring an induced pressure change in a material of large Poisson’s ratio. In this investigation, we develop mathematical expressions for the sensor’s sensitivity and bandwidth, and show that its sensitivity can be much larger and its bandwidth is usually smaller than those of existing strain-gage-type sensors. This force sensor is well-suited for measuring large but slowly varying forces. It can be installed in a space smaller than that required for existing sensors. This

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9

Aldana-Franco, Fernando, Fernando Montes González, and Stefano Nolfi. "Evolutionary utility of emerging communication systems and Singnal Complexity in Robotics." International Journal of Combinatorial Optimization Problems and Informatics 15, no. 3 (2024): 15–27. http://dx.doi.org/10.61467/2007.1558.2024.v15i3.377.

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Communication allows robots to exchange information and coordinate to solve complex tasks. Evolutionary methods are used to emerge communication in groups of robots. However, many variables are involved, and they must be studied to understand their influence on the emergence of communication systems. Thus, a study is presented to try to understand if a standard approach is more effective than using Evolutionary Robotics in order to produce development signals. For this, an environment is adapted to solve the task of discrimination between food and poison areas, which favors the emergence of si

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10

Amer, T. S., W. S. Amer, M. Fakharany, A. H. Elneklawy, and H. F. El-Kafly. "Modeling of the Euler-Poisson Equations for Rigid Bodies in the Context of the Gyrostatic Influences: An Innovative Methodology." European Journal of Pure and Applied Mathematics 18, no. 1 (2025): 5712. https://doi.org/10.29020/nybg.ejpam.v18i1.5712.

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This paper presents an alternative approach to solving Euler-Poisson’s dynamical equations, which describe the governing equations of how a rigid body (RGB) rotates around a stationary point with the influence of a gyrostatic moment (GM). The RGB’s angular velocity vector components in our solution are different from those in the well-known cases. It is expected that the RGB’s center of mass lies in the meridional plane along its principal axis of inertia. Additionally, it is assumed that the main inertia moments correspond to a fundamental algebraic equality. Additionally, there is a constrai

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Sapna and Jain Anamika. "Recovery Mechanism in Machine repair system with Cobot and Reboot Impact." Journal of Asian American Studies 27, no. 3 (2025): 566–86. https://doi.org/10.5281/zenodo.15209566.

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This is an investigation of M/M/2 heterogeneous server, queueingmodel in which first server is totally reliable and always available but thesecond server provides two services. The second server originates with twoservices, one is an essential service (ES) and the second is optional service(OS). The arrival of failed units follows a Poisson distribution and theservice follows an exponential distribution. The second server is the cobotserver which is a combination of humans and robots and provides twoservices. In the development of robotic services, these robots face difficultyin real-time trac

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Serpen, Gursel, and Jayanta Debnath. "Design and performance evaluation of a parking management system for automated, multi-story and robotic parking structure." International Journal of Intelligent Computing and Cybernetics 12, no. 4 (2019): 444–65. http://dx.doi.org/10.1108/ijicc-02-2019-0017.

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Purpose The purpose of this paper is to present design and performance evaluation through simulation of a parking management system (PMS) for a fully automated, multi-story, puzzle-type and robotic parking structure with the overall objective of minimizing customer wait times while maximizing the space utilization. Design/methodology/approach The presentation entails development and integration of a complete suite of path planning, elevator scheduling and resource allocation algorithms. The PMS aims to manage multiple concurrent requests, in real time and in a dynamic context, for storage and

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13

Ye, Zixiong, Jianchao Liu, and Xin Xue. "Mechanical properties of an orthogonal spiral metal skeleton-polyurethane composite." Journal of Physics: Conference Series 2956, no. 1 (2025): 012042. https://doi.org/10.1088/1742-6596/2956/1/012042.

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Abstract Interpenetrating composites have a wide range of applications such as robotics and aerospace, due to their excellent load-bearing capacity and large elastic recovery. In this work, a novel metal/plastic composite namely orthogonal spiral metal skeleton-polyurethane composite (OSMS-PU) is proposed. The mechanical properties and deformation characteristics of OSMS-PU under quasi-static compression were investigated by means of experimental and numerical methods. The effects of key geometrical structure parameters such as the diameter and the pitch of spiral wire on the compression prope

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14

SHUTIN, DMITRIY, Thomas Wiedemann, and Patrick Hinsen. "Detection and Estimation of Gas Sources with Arbitrary Locations based on Poisson's Equation." IEEE Open Journal of Signal Processing 5 (December 21, 2023): 359–73. https://doi.org/10.1109/OJSP.2023.3344076.

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Accurate estimation of the number and locations of dispersed material sources is critical for optimal disaster response in Chemical, Biological, Radiological, or Nuclear accidents. This paper introduces a novel approach to Gas Source Localization that uses sparse Bayesian learning adapted to models based on Partial Differential Equations for modeling gas dynamics. Using the method of Green’s functions and the adjoint state method, a gradient-based optimization with respect to source location is derived, allowing superresolving (arbitrary) source locations. By com

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15

Li, Yue, Stelian Coros, and Bernhard Thomaszewski. "Neural Metamaterial Networks for Nonlinear Material Design." ACM Transactions on Graphics 42, no. 6 (2023): 1–13. http://dx.doi.org/10.1145/3618325.

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Nonlinear metamaterials with tailored mechanical properties have applications in engineering, medicine, robotics, and beyond. While modeling their macromechanical behavior is challenging in itself, finding structure parameters that lead to ideal approximation of high-level performance goals is a challenging task. In this work, we propose Neural Metamaterial Networks (NMN)---smooth neural representations that encode the nonlinear mechanics of entire metamaterial families. Given structure parameters as input, NMN return continuously differentiable strain energy density functions, thus guaranteei

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Musli, Farhah Athirah, Siti Hasnah Tanalol, Asni Tahir, Andang Sunarto, and Azali Saudi. "Efficient Application of Modified TOR Iterative Method with GPU Acceleration in Robotics and Image Processing." Journal of Advanced Research Design 131, no. 1 (2025): 26–46. https://doi.org/10.37934/ard.131.1.2646.

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This paper presents the application of the Modified TOR (MTOR) method, implemented using CUDA, for solving Poisson's equation through the iterative Finite Difference (FD) method. The study aims to provide a detailed description of the MTOR method for solving Partial Differential Equations (PDEs) on both standard and rotated meshes, employing CUDA for parallel processing. The MTOR method uses a red-black ordering strategy during iteration; consequently, the calculation of red cells utilizes the updated values of their four neighbouring black cells, and vice versa. To evaluate the performance of

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17

Duits, Remco, Erik J. Bekkers, and Alexey Mashtakov. "Fourier Transform on the Homogeneous Space of 3D Positions and Orientations for Exact Solutions to Linear PDEs." Entropy 21, no. 1 (2019): 38. http://dx.doi.org/10.3390/e21010038.

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Fokker–Planck PDEs (including diffusions) for stable Lévy processes (including Wiener processes) on the joint space of positions and orientations play a major role in mechanics, robotics, image analysis, directional statistics and probability theory. Exact analytic designs and solutions are known in the 2D case, where they have been obtained using Fourier transform on S E ( 2 ) . Here, we extend these approaches to 3D using Fourier transform on the Lie group S E ( 3 ) of rigid body motions. More precisely, we define the homogeneous space of 3D positions and orientations R 3 ⋊ S 2 : = S E ( 3 )

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Bhargava Pananthula, Manoj Kumar. "3D Image Reconstruction from Single 2D Image using Deep Learning." INTERNATIONAL JOURNAL OF SCIENTIFIC RESEARCH IN ENGINEERING AND MANAGEMENT 09, no. 04 (2025): 1–9. https://doi.org/10.55041/ijsrem44955.

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Abstract— Accurate 3D reconstruction from 2D images plays a critical role in various applications including medical imaging, robotics, autonomous navigation, and augmented reality. Traditional reconstruction techniques often require multiple viewpoints or sensor setups, limiting their feasibility in resource-constrained environments. In this work, we propose a deep learning-based monocular 3D reconstruction pipeline that generates high-quality 3D models from a single RGB image. The core of this framework lies in a custom U-Net++ architecture, designed and trained on the NYU Depth V2 dataset fo

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19

Kim, Sang-Un, and Joo-Yong Kim. "Characterizing Six Percolation Cases in Flexible Electronic Composites: A Monte Carlo-Based 3D Compressive Percolation Model for Wearable Pressure Sensors." Materials 18, no. 3 (2025): 685. https://doi.org/10.3390/ma18030685.

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This study employs a Monte Carlo-based 3D compressive percolation model to systematically analyze the electrical behavior of flexible electronic composites under compressive deformation. By simulating the spatial distribution and connectivity of conductive particles, this study identifies six distinct percolation cases, each describing a unique connectivity evolution under strain. The model reveals that excessive initial connectivity leads to saturation effects, reducing sensitivity, while a high Poisson’s ratio (≥0.3) causes connectivity loss due to shear plane expansion. Notably, asymmetric

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Reid, Daniel R., Nidhi Pashine, Justin M. Wozniak, et al. "Auxetic metamaterials from disordered networks." Proceedings of the National Academy of Sciences 115, no. 7 (2018): E1384—E1390. http://dx.doi.org/10.1073/pnas.1717442115.

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Recent theoretical work suggests that systematic pruning of disordered networks consisting of nodes connected by springs can lead to materials that exhibit a host of unusual mechanical properties. In particular, global properties such as Poisson’s ratio or local responses related to deformation can be precisely altered. Tunable mechanical responses would be useful in areas ranging from impact mitigation to robotics and, more generally, for creation of metamaterials with engineered properties. However, experimental attempts to create auxetic materials based on pruning-based theoretical ideas ha

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Khoshgoftar, Mohammad Javad, Ali Barkhordari, Sajjad Seifoori, and Mohammad Javad Mirzaali. "Elasticity Approach to Predict Shape Transformation of Functionally Graded Mechanical Metamaterial under Tension." Materials 14, no. 13 (2021): 3452. http://dx.doi.org/10.3390/ma14133452.

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The re-entrant structures are among the simple unit cell designs that have been widely used in the design of mechanical metamaterials. Changing the geometrical parameters of these unit cell structures, their overall elastic properties (i.e., elastic stiffness and Poisson’s ratio), can be simultaneously tuned. Therefore, different design strategies (e.g., functional gradient) can be implemented to design advanced engineering materials with unusual properties. Here, using the theory of elasticity and finite element modeling, we propose a fast and direct approach to effectively design the microar

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22

Briskin, E. S., V. N. Platonov, N. G. Sharonov, and S. A. Ustinov. "On the Optimal Distribution of Traction Forces in Cable Propulsors of Mobile Robots." Mekhatronika, Avtomatizatsiya, Upravlenie 25, no. 11 (2024): 596–602. http://dx.doi.org/10.17587/mau.25.596-602.

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The analysis of methods of distribution of traction forces in various propellers of mobile robotic complexes and transport vehicles is carried out. The problem of synthesizing a method for controlling the distribution of the total traction load between interconnected electric drives of mobile robot propellers, discretely interacting with the support surface, is considered. An underwater mobile robot is simulated with several "walking-like" anchor-cable propellers, which ensure the movement of the underwater mobile robot by pulling the body to the supports located on the bottom. A mathematical

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Irsyad, As’Ary Sahlul, Muhammad Ikhsan, and Aidil Halim Lubis. "USE OF PROPORTIONAL INTEGRAL DERIVATIVE (PID) ALGORITHM IN GRASS POISONING ROBOT." JURTEKSI (Jurnal Teknologi dan Sistem Informasi) 9, no. 3 (2023): 377–84. http://dx.doi.org/10.33330/jurteksi.v9i3.2210.

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Abstract: Grass is one of the plants that live on God's earth, even grass is also written in Al-quran. Grass is currently also a pest for plants, so sometimes to minimize grass growth, many farmers or people eradicate grass by cutting it even by poisoning the grass. Each method used has its own risk of work accidents, such as using grass poison can experience insecticide poisoning. To anticipate this, a remotecontrol robot that sprays automatic grass poison using the PID method is designed. The test results found that the robot works with a voltage of 11.1 VDC with a 5-12VDC motor with a speed

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Qu, Y. F., J. H. Ma, Y. Q. He, L. Zhang, F. C. Ren, and B. Li. "3D printing-directed flexible strain sensors of accordion-like architecture to achieve ultrastretchability with the assist of ultrasonic cavitation treatment." Journal of Physics: Conference Series 2085, no. 1 (2021): 012042. http://dx.doi.org/10.1088/1742-6596/2085/1/012042.

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Abstract A new class of accordion-like cellular architecture with sinusoidal struts is designed to enhance the planar stretchability of cellular solids, aiming to fabricate flexible strain sensors with ultrastretchability. The combination manufacturing process of fused deposition modeling (FDM) 3D printing technique and ultrasonic cavitation-enabled treatment was introduced into the fabrication of flexible strain sensors made of thermoplastic polyurethane (TPU) substrate and carbon nanotubes (CNTs). A negative Poisson’s ratio (NPR) architecture made of TPU was firstly 3D-printed by FDM. The ul

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Hosseinian, S., and H. Arefi. "ASSESSMENT OF RESTORATION METHODS OF X-RAY IMAGES WITH EMPHASIS ON MEDICAL PHOTOGRAMMETRIC USAGE." ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XLI-B5 (June 16, 2016): 835–40. http://dx.doi.org/10.5194/isprs-archives-xli-b5-835-2016.

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Nowadays, various medical X-ray imaging methods such as digital radiography, computed tomography and fluoroscopy are used as important tools in diagnostic and operative processes especially in the computer and robotic assisted surgeries. The procedures of extracting information from these images require appropriate deblurring and denoising processes on the pre- and intra-operative images in order to obtain more accurate information. This issue becomes more considerable when the X-ray images are planned to be employed in the photogrammetric processes for 3D reconstruction from multi-view X-ray

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Tipaldi, Gian Diego, and Kai Arras. "Planning Problems for Social Robots." Proceedings of the International Conference on Automated Planning and Scheduling 21 (March 22, 2011): 339–42. http://dx.doi.org/10.1609/icaps.v21i1.13481.

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As robots enter environments that they share with people, human-aware planning and interaction become key tasks to be addressed. For doing so, robots need to reason about the places and times when and where humans are engaged into which activity and plan their actions accordingly. In this paper, we first address this issue by learning a nonhomogenous spatial Poisson process whose rate function encodes the occurrence probability of human activities in space and time. We then present two planning problems for human robot interaction in social environments. The first one is the maximum encounter

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Hosseinian, S., and H. Arefi. "ASSESSMENT OF RESTORATION METHODS OF X-RAY IMAGES WITH EMPHASIS ON MEDICAL PHOTOGRAMMETRIC USAGE." ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XLI-B5 (June 16, 2016): 835–40. http://dx.doi.org/10.5194/isprsarchives-xli-b5-835-2016.

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Nowadays, various medical X-ray imaging methods such as digital radiography, computed tomography and fluoroscopy are used as important tools in diagnostic and operative processes especially in the computer and robotic assisted surgeries. The procedures of extracting information from these images require appropriate deblurring and denoising processes on the pre- and intra-operative images in order to obtain more accurate information. This issue becomes more considerable when the X-ray images are planned to be employed in the photogrammetric processes for 3D reconstruction from multi-view X-ray

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Zhang, Z., and A. O. Krushynska. "Programmable shape-morphing of rose-shaped mechanical metamaterials." APL Materials 10, no. 8 (2022): 080701. http://dx.doi.org/10.1063/5.0099323.

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Shape morphing is one of the most attractive functionalities of materials that are desired in many applications, including robotic grippers, medical stents, wearable electronics, and so on. Shape morphing can be implemented by using mechanical metamaterials that combine building blocks with properly designed mechanical or material properties. The design approaches are, however, mostly ad hoc or require materials with special properties. This work proposes two automated design strategies for programmable shape morphing and validates them on structures 3D-printed from a widely available commerci

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Lee, Ju-Yong, Min-Ha Oh, Joo-Hyeon Park, Se-Hun Kang, and Seung-Kyun Kang. "Three-Dimensionally Printed Expandable Structural Electronics Via Multi-Material Printing Room-Temperature-Vulcanizing (RTV) Silicone/Silver Flake Composite and RTV." Polymers 15, no. 9 (2023): 2003. http://dx.doi.org/10.3390/polym15092003.

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Three-dimensional (3D) printing has various applications in many fields, such as soft electronics, robotic systems, biomedical implants, and the recycling of thermoplastic composite materials. Three-dimensional printing, which was only previously available for prototyping, is currently evolving into a technology that can be utilized by integrating various materials into customized structures in a single step. Owing to the aforementioned advantages, multi-functional 3D objects or multi-material-designed 3D patterns can be fabricated. In this study, we designed and fabricated 3D-printed expandab

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Pekkanen, Suvi, Satu Rautaoja, Risto Kauppinen, Leena Ahola, Jaakko Mononen, and Petri Kainulainen. "Lypsylehmät sopeutuivat hyvin siirtoon parsinavetasta automaattiseen lypsyjärjestelmään." Suomen Maataloustieteellisen Seuran Tiedote, no. 21 (January 31, 2006): 1–6. http://dx.doi.org/10.33354/smst.76771.

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Tutkimuksessa tarkasteltiin lypsylehmien yksilöllistä sopeutumista siirryttäessä suoraan parsinavetastapihaton automaattiseen lypsyjärjestelmään. Tutkimus toteutettiin tapaustutkimuksena lämminpihatossakevään ja syksyn 2004 välisenä aikana sekä kyselytutkimuksena 16 tilalle, jotka olivat siirtyneetsuoraan parsinavetasta automaattiseen lypsyjärjestelmään. Suurin osa lehmistä tottui nopeasti uuteenlypsyjärjestelmään. Lehmien totuttamiseen tarvittiin jonkun verran ylimääräistä työtä kahdenensimmäisen viikon aikana siirron jälkeen. Työ oli lähinnä lehmien ajamista robotille.TapaustutkimusTapaustut

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Zhang, Jiachen, Ziyu Ren, Wenqi Hu, et al. "Voxelated three-dimensional miniature magnetic soft machines via multimaterial heterogeneous assembly." Science Robotics 6, no. 53 (2021): eabf0112. http://dx.doi.org/10.1126/scirobotics.abf0112.

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Small-scale soft-bodied machines that respond to externally applied magnetic field have attracted wide research interest because of their unique capabilities and promising potential in a variety of fields, especially for biomedical applications. When the size of such machines approach the sub-millimeter scale, their designs and functionalities are severely constrained by the available fabrication methods, which only work with limited materials, geometries, and magnetization profiles. To free such constraints, here, we propose a bottom-up assembly-based 3D microfabrication approach to create co

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Saravana Jothi, N. S., and A. Hunt. "Active mechanical metamaterial with embedded piezoelectric actuation." APL Materials 10, no. 9 (2022): 091117. http://dx.doi.org/10.1063/5.0101420.

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Metamaterials are artificially structured materials and exhibit properties that are uncommon or non-existent in nature. Mechanical metamaterials show exotic mechanical properties, such as negative stiffness, vanishing shear modulus, or negative Poisson’s ratio. These properties stem from the geometry and arrangement of the metamaterial unit elements and, therefore, cannot be altered after fabrication. Active mechanical metamaterials aim to overcome this limitation by embedding actuation into the metamaterial unit elements to alter the material properties or mechanical state. This could pave th

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Turner, Joel G., Thomas C. Rowe, David A. Ostrov, Elizabeth J. Ciaravino, Jana L. Gump та Daniel M. Sullivan. "Blocking a Topoisomerase IIα Nuclear Export Signal Sensitizes Human Multiple Myeloma Cells to Topoisomerase II Inhibitors." Blood 114, № 22 (2009): 2850. http://dx.doi.org/10.1182/blood.v114.22.2850.2850.

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Abstract Abstract 2850 Poster Board II-826 Background We have previously demonstrated that topoisomerase IIa (topo IIa) is exported from the nucleus of high density human multiple myeloma (MM) cells by a CRM1-dependent mechanism (Engel et al, Exp. Cell Res. 295(2):421-31, 2004). We have also identified the nuclear export signals (NES) for topo IIa at amino acids 1017-28 (site 1) and 1054-66 (site 2) using mutated full-length FLAG-tagged topo IIa protein and immunofluorescence microscopy (Turner et al, J. Cell Sci. 117:3061-71, 2004). Drug resistance to topo II poisons occurs when topo II is tr

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Turner, Joel G., Thomas C. Rowe, David Ostrov, Jana L. Dawson, Elizabeth Ciaravino, and Daniel Sullivan. "Novel Drug Targets to Overcome De Novo Drug-Resistance In Multiple Myeloma." Blood 116, no. 21 (2010): 3006. http://dx.doi.org/10.1182/blood.v116.21.3006.3006.

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Abstract Abstract 3006 Abstract Human multiple myeloma (MM) still remains an incurable disease despite improved treatment regimens that include bortezomib, lenalidomide and thalidomide. New therapeutic targets are needed to further improve treatment outcomes. We have shown that targeting intracellular trafficking of proteins may sensitize cells to antitumor agents (Turner et al. 2009, Cancer Res, 69, 6899-905). We have previously demonstrated that topoisomerase II alpha (topo IIα) trafficking from the nucleus to the cytoplasm in myeloma cells occurs by a CRM1-dependent mechanism and resulting

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ERDOĞMUŞ, Alim Kerem, and Uğur YAYAN. "Verification and Validation of Camera Based Robotic Inspection System via Camera Fault Injection Tool." Eskişehir Osmangazi Üniversitesi Mühendislik ve Mimarlık Fakültesi Dergisi, February 20, 2024. http://dx.doi.org/10.31796/ogummf.1348531.

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Günümüzde, gelişen görüntü işleme teknikleri ile birlikte kamera tabanlı robotik inceleme sistemleri oldukça popülerlik kazanmıştır. Bu tür sistemler gıdadan, askeriyeye birçok sektörde yoğun olarak kullanılmaktadır. Bu sistemler geliştirilirken gerekli olan doğrulama ve onaylama süreçleri oldukça uzun ve maliyetli olmaktadır. Bu çalışma, kamera tabanlı endüstriyel robotik sistemler üzerinde doğrulama ve onaylama faaliyetlerini gerçekleştirmek ve iyileştirmek amacıyla geliştirilmiştir. RGB ve TOF kameralara farklı türlerde (Open, Close, Dilation, Erosion, Gradient, Motionblur, Tuz&Biber, G

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Li, Zixuan. "A Novel Squid-Inspired AUV Design: Revolutionizing Coral Reef Preservation Through CFD and Experimental Insights into Drag and Maneuverability." Science and Technology of Engineering, Chemistry and Environmental Protection 1, no. 3 (2023). http://dx.doi.org/10.61173/5jgtw752.

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This study focuses on conceptualizing and optimizing an advanced bionic robotic solution to surmount the limitations of current observational vehicles in coral reef conservation. Human divers are traditionally subjected to physiological challenges, while current robotic alternatives grapple with operational impediments, including anthropogenic marine disturbances. Utilizing advanced robotics tailored for marine ecosystems with intricate topologies and fragile corals, this study aims to enhance conservation precision in the face of climatic shifts and marine pollution from anthropogenic activit

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Zhang, Bojian, Zhiqiang Meng, Xudong Yang, et al. "Multistable Soft Robots Assembled from Bistable Auxetic Building Blocks." Advanced Intelligent Systems, August 4, 2024. http://dx.doi.org/10.1002/aisy.202400529.

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Soft robotics have significantly influenced both scientific and industrial domains over the past decades. However, their inherent limitations of material or structural softness pose a persistent challenge in terms of shape retention and load capacity for various applications. To address this challenge, bistable and multistable structures with two or more mechanically stable states and snap‐through switchability emerge as a promising solution. Herein, a multistable soft robot design assembled from bistable auxetic building blocks with negative Poisson's ratio and a large volumetric change is pr

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Huang, Xin, Tianzhao Bu, Qingyang Zheng, et al. "Flexible sensors with zero Poisson's ratio." National Science Review, January 23, 2024. http://dx.doi.org/10.1093/nsr/nwae027.

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Abstract Flexible sensors have been developed to provide sufficient perception capability for various stimuli. However, the complex deformation, usually results from forces or strains from multi-axes, can be challenging to measure due to the lack of independent perception of multi-axial stimuli. Herein, flexible sensors based on the metamaterial membrane with zero Poisson's ratio (ZPR) are proposed to achieve independent detection of biaxial stimuli. By deliberately designing the geometric dimensions and arrangement parameters of elements, the Poisson's ratio of elastomer membrane can be modul

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Diamanti, Eleni, Mauhing Yip, Annette Stahl, and Øyvind Ødegård. "Advancing data quality of marine archaeological documentation using underwater robotics: from simulation environments to real-world scenarios." January 2, 2024. https://doi.org/10.5281/zenodo.10450829.

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This paper presents a novel method for visual-based 3D mapping of underwater cultural heritage sites through marine robotic operations. The proposed methodology addresses the three main stages of an underwater robotic mission, specifically the planning phase, the mission-time and the offline processing phase. Initially, we approach mission planning through multi-vision sensor configurations and simulations of the underwater medium's effects. Subsequently, we demonstrate a possibility for real-time 3D surface reconstruction and hole detection by using Poisson Surface Reconstruction (PSR) and th

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McCarthy, Elizabeth, Benjamin L. Gough, Michael S. Johns, Alexandra Hanlon, Sachin Vaid, and Nicholas Petrelli. "A Comparison of Colectomy Outcomes Utilizing Open, Laparoscopic, and Robotic Techniques." American Surgeon, December 19, 2020, 000313482097338. http://dx.doi.org/10.1177/0003134820973384.

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Introduction Robotic colectomy could reduce morbidity and postoperative recovery over laparoscopic and open procedures. This comparative review evaluates colectomy outcomes based on surgical approach at a single community institution. Methods A retrospective review of all patients who underwent colectomy by a fellowship-trained colon and rectal surgeon at a single institution from 2015 through 2019 was performed, and a cohort developed for each approach (open, laparoscopic, and robotic). 30-day outcomes were evaluated. For dichotomous outcomes, univariate logistic regression models were used t

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"Smooth Path Planning of Ackerman Chassis Robot based on Improved ant Colony Algorithm." International Journal of Circuits, Systems and Signal Processing 14 (July 20, 2020). http://dx.doi.org/10.46300/9106.2020.14.49.

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In the domain of robotics and autonomous driving, the automatic path planning of vehicle collision-free motion is an essential task on the navigation level. It is found that the traditional path planning algorithm and the ployline path cannot fully meet the driving requirements of Ackerman chassis robot. In order to solve the autonomous navigation problem of Ackerman chassis mobile robot in structured environment, this paper presents a new improved algorithm. The method of configuration space can introduce the robot's own structural size parameters into the algorithm. Through convex polygon de

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Pellegrini, Alessandro, Maria Emanuela Palmieri, Fulvio Lavecchia, Luigi Tricarico, and Luigi Maria Galantucci. "Auxetic behavior of 3D-printed structure made in acrylonitrile butadiene styrene and carbon fiber-reinforced polyamide." Progress in Additive Manufacturing, June 6, 2023. http://dx.doi.org/10.1007/s40964-023-00465-0.

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AbstractParts with an auxetic structure, which exhibit negative Poisson’s ratio, can be associated with a novel class of smart materials. Such interesting property has been widely explored, over the time, for different applications, i.e., medical, automotive, robotic and aeronautic field. However, the research about the design and analysis of auxetic behavior is still on the way. In this paper, a 2D re-entrant honeycomb structure was realized using material extrusion additive manufacturing technology. Two different materials, acrylonitrile butadiene styrene and carbon fiber-reinforced polyamid

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Singh, Gaurav, Ahsan Nawroj, and Aaron M. Dollar. "Mechanical Characterization of Compliant Cellular Robots. Part I: Passive Stiffness." Journal of Mechanisms and Robotics, May 18, 2022, 1–22. http://dx.doi.org/10.1115/1.4054615.

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Abstract Modular Active Cell Robots (MACROs) are a design paradigm for modular robotic hardware that uses only two components, namely actuators and passive compliant joints. Under the MACRO approach, a large number of actuators and joints are connected to create mesh-like robotic structures that can be actuated to achieve large deformation and shape-change. In this two-part paper, we study the importance of different possible mesh topologies within the MACRO framework. Regular and semi-regular tilings of the plane are used as the candidate mesh topologies and simulated using Finite Element Ana

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Aarthy, B., and B. Srutha Keerthi. "Enhancement of various images using coefficients obtained from a class of Sakaguchi type functions." Scientific Reports 13, no. 1 (2023). http://dx.doi.org/10.1038/s41598-023-45938-y.

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AbstractDigital image processing has a wide range of uses, including robotics and automated inspection of industrial parts. Other uses include remote sensing using satellites and other spacecraft, image transmission and storage for business applications, medical processing, and Acoustic image processing. The process of highlighting particular intriguing features in a hidden image is known as image enhancement. We can accomplish this by altering the brightness, contrast, etc. The generated output is more suitable than the original image for some particular purposes. The proposed algorithm which

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Kim, Chae-Hwan, Hyun-Young Kim, Jun-Ho Kim, and Jaehwan Kim. "3D Printing-based Soft Auxetic Structures using PDMS-Ecoflex Hybrid." Functional Composites and Structures, March 2, 2023. http://dx.doi.org/10.1088/2631-6331/acc0cf.

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Abstract Auxetic structures with negative Poisson’s ratio have received much attention due to their attractive behavioral properties in next-generation metamaterials and robotic applications. However, until now, there has been a lack of research into using soft materials to reliably develop a largely-deformable auxetic structures. Here, we develop soft PDMS-Ecoflex auxetic structures using a 3D printing technique, leading to high fabrication reliability and repeatability. Water-soluble filaments are employed to design sacrificial mold structures that quickly dissolve in warm water. By measurin

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Dong, Le, Chengru Jiang, Jinqiang Wang, and Dong Wang. "Design of Shape Reconfigurable, Highly Stretchable Honeycomb Lattice With Tunable Poisson’s Ratio." Frontiers in Materials 8 (May 31, 2021). http://dx.doi.org/10.3389/fmats.2021.660325.

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The mechanical behaviors of lattice structures can be tuned by arranging or adjusting their geometric parameters. Once fabricated, the lattice’s mechanical behavior is generally fixed and cannot adapt to environmental change. In this paper, we developed a shape reconfigurable, highly stretchable lattice structure with tunable Poisson’s ratio. The lattice is built based on a hexagonal honeycomb structure. By replacing the straight beam with curled microstructure, the stretchability of the lattice is significantly improved. The Poisson’s ratio is adjusted using a geometric angle. The lattice is

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Yang, Nan, Juncheng Zhuang, Shichuan Wei, and Ying Yu. "Continuous and Discrete Deformation Modes of Mechanical Metamaterials With Ring-Like Unit Cells." Frontiers in Physics 10 (July 4, 2022). http://dx.doi.org/10.3389/fphy.2022.909536.

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Structures with multiple deformation paths provide a promising platform for robotics and reprogrammable mechanical and thermal deformation materials. Reconfigurations with a multi-path can fulfill many tasks (e.g., walking and grasping) and possess multiple properties (e.g., targeted Poisson’s ratio and thermal expansion coefficient). Here, we proposed a new ring-like kirigami structure and theoretically and experimentally found that for a basic unit, there are four discrete deformation patterns and a continuous shearing deformation pattern; thus, there are a large number of discrete deformati

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Liu, Kevin T., and G. H. Paulino. "Geometric mechanics of hybrid origami assemblies combining developable and non-developable patterns." Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences 480, no. 2282 (2024). http://dx.doi.org/10.1098/rspa.2023.0716.

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Origami provides a method to transform a flat surface into complex three-dimensional geometries, which has applications in deployable structures, meta-materials, robotics and beyond. The Miura-ori and the eggbox are two fundamental planar origami patterns. Both patterns have been studied closely, and have become the basis for many engineering applications and derivative origami patterns. Here, we study the hybrid structure formed by combining unit cells of the Miura-ori and eggbox patterns. We find the compatibility constraints required to form the hybrid structure and derive properties of its

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Uddin, Kazi Zahir, Ibnaj Anamika Anni, George Youssef, and Behrad Koohbor. "Modulating poisson’s ratio in flexible honeycombs by density and architecture gradations." Engineering Research Express, September 26, 2023. http://dx.doi.org/10.1088/2631-8695/acfd81.

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Abstract Zero Poisson’s ratio structures are a new class of mechanical metamaterials wherein the absence of lateral deformations allows the structure to adapt and conform their geometries to desired shapes with minimal interventions. These structures have gained attention in large deformation applications where shape control is a key performance attribute, with examples including but not limited to shape morphing, soft robotics, and flexible electronics. The present study introduces an experimentally driven approach that leads to the design and development of (near) zero Poisson’s ratio struct

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Kim, Dong, Arman Safdari, and Kyung Chun Kim. "Sound pressure level spectrum analysis by combination of 4D PTV and ANFIS method around automotive side-view mirror models." Scientific Reports 11, no. 1 (2021). http://dx.doi.org/10.1038/s41598-021-90734-1.

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AbstractThis paper proposes a data augmentation method based on artificial intelligence (AI) to obtain sound level spectrum as predicting the spatial and temporal data of time-resolved three-dimensional Particle Tracking Velocimetry (4D PTV) data. A 4D PTV has used to measure flow characteristics of three side mirror models adopting the Shake-The-Box (STB) algorithm with four high-speed cameras on a robotic arm for measuring industrial scale. Helium filled soap bubbles are used as tracers in the wind tunnel experiment to characterize flow structures around automobile side mirror models. Full v

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