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We study, using simulations, the steady-state flow of dry sand driven by gravity in two-dimensions. An investigation of the microscopic grain dynamics reveals that grains remain separated but with a power-law distribution of distances and…

Soft Condensed Matter · Physics 2016-08-31 Colin Denniston , Hao Li

The problem of detecting new signals in the presence of an unknown background is ubiquitous in scientific discoveries and is especially prominent in the physical sciences. Most solutions proposed thus far to address the problem focus on…

Methodology · Statistics 2026-05-21 Aritra Banerjee , Sara Algeri

Plant species identification in the wild is a difficult problem in part due to the high variability of the input data, but also because of complications induced by the long-tail effects of the datasets distribution. Inspired by the most…

Computer Vision and Pattern Recognition · Computer Science 2021-06-07 Matthew R. Keaton , Ram J. Zaveri , Meghana Kovur , Cole Henderson , Donald A. Adjeroh , Gianfranco Doretto

This paper proposes a novel learning-free three-stage method that predicts grasping poses, enabling robots to pick up and transfer previously unseen objects. Our method first identifies potential structures that can afford the action of…

Robotics · Computer Science 2024-08-14 Wanze Li , Wan Su , Gregory S. Chirikjian

A relativistic theory of gravity like general relativity produces phenomena differing fundamentally from Newton's theory. An example, analogous to electromagnetic induction, is gravitomagnetism, or the dragging of inertial frames by…

General Relativity and Quantum Cosmology · Physics 2021-01-20 Wan Cong , Jiri Bicak , David Kubiznak , Robert B. Mann

Learning-based grasp detectors typically assume a precision grasp, where each finger only has one contact point, and estimate the grasp probability. In this work, we propose a data generation and learning pipeline that can leverage power…

Robotics · Computer Science 2024-08-14 Tianyi Ko , Takuya Ikeda , Thomas Stewart , Robert Lee , Koichi Nishiwaki

Proximity sensing detects an object's presence without contact. However, research has rarely explored proximity sensing in granular materials (GM) due to GM's lack of visual and complex properties. In this paper, we propose a…

Robotics · Computer Science 2023-07-19 Zeqing Zhang , Ruixing Jia , Youcan Yan , Ruihua Han , Shijie Lin , Qian Jiang , Liangjun Zhang , Jia Pan

To use robots in more unstructured environments, we have to accommodate for more complexities. Robotic systems need more awareness of the environment to adapt to uncertainty and variability. Although cameras have been predominantly used in…

Robotics · Computer Science 2025-06-23 Viral Rasik Galaiya

Grasping of novel objects in pick and place applications is a fundamental and challenging problem in robotics, specifically for complex-shaped objects. It is observed that the well-known strategies like \textit{i}) grasping from the…

Robotics · Computer Science 2020-01-08 Mohit Vohra , Ravi Prakash , Laxmidhar Behera

The direct detection of gravitational waves provides the opportunity to measure fundamental aspects of gravity which have never been directly probed before, including the polarization of gravitational waves. In the context of searches for…

General Relativity and Quantum Cosmology · Physics 2017-08-18 Maximiliano Isi , Matthew Pitkin , Alan J. Weinstein

The paper discusses fundamental detectability properties associated with the problem of distributed state estimation using networked observers. The main result of the paper establishes connections between detectability of the plant through…

Systems and Control · Computer Science 2014-01-28 V. Ugrinovskii

Monitoring plantations is crucial for crop management and producing healthy harvests. Unmanned Aerial Vehicles (UAVs) have been used to collect multispectral images that aid in this monitoring. However, given the number of hectares to be…

Computer Vision and Pattern Recognition · Computer Science 2024-09-17 Felipe A. Lopes , Vasit Sagan , Flavio Esposito

Farmers frequently assess plant growth and performance as basis for making decisions when to take action in the field, such as fertilization, weed control, or harvesting. The prediction of plant growth is a major challenge, as it is…

Computer Vision and Pattern Recognition · Computer Science 2023-12-07 Lukas Drees , Laura Verena Junker-Frohn , Jana Kierdorf , Ribana Roscher

Future food security is a major concern of the 21st century with the growing global population and climate changes. In addressing these challenges, protected cropping ensures food production year-round and increases crop production per land…

Computational Engineering, Finance, and Science · Computer Science 2024-01-26 Namal Jayasuriya , Yi Guo , Wen Hu , Oula Ghannoum

We present a new idea that allows us to detect gravitational waves without being disturbed by any kind of displacement noise, based on the fact that gravitational waves and test-mass motions affect the propagations of light differently. We…

General Relativity and Quantum Cosmology · Physics 2009-11-10 Seiji Kawamura , Yanbei Chen

For a general class of translationally invariant systems with a specific category of nonlinearity in the output, this paper presents necessary and sufficient conditions for global observability. Critically, this class of systems cannot be…

Dynamical Systems · Mathematics 2022-10-11 Eduardo D. Sontag , Debojyoti Biswas , Noah J. Cowan

While most fundamental interactions in nature are known to be mediated by quantized fields, the possibility has been raised that gravity may behave differently. Making this concept precise enough to test requires consistent models. Here we…

Quantum Physics · Physics 2023-01-23 Daniel Carney , Jacob M. Taylor

Gravity modes are the best probes to study the solar radiative zone dynamics, especially in the nuclear core. These modes remain difficult to observe, but they are essential ingredients for progressing on the evolution of the Sun-Earth…

Astrophysics · Physics 2009-11-11 Sylvaine Turck-Chieze

Plant life plays a critical role in the ecosystem. However, it is difficult for humans to perceive plants' reactions because the biopotential and biochemical responses are invisible to humans. Guttation droplets contain various chemicals…

Human-Computer Interaction · Computer Science 2023-02-13 Qiuyu Lu , Lydia Yang , Aditi Maheshwari , Hengrong Ni , Tianyu Yu , Jianzhe Gu , Advait Wadhwani , Andreea Danielescu , Lining Yao

This paper presents reflections on the validity of a series of mathematical methods and technical assumptions that are encrusted in macrophysics (related to gravitational interaction), that seem to have little or no physical significance.…

General Physics · Physics 2010-05-05 M. Iftime