20 papers · ranked by Valyu relevance
Yan He, Yahui Zhang, Xiaohua Feng, Shuwei Deng + 2 more
'Nunzio Cennamo'] This paper proposes a new optimized parameter model that enhances the pointing accuracy of moving-platform electro-optical telescopes (MPEOTs). The study begins by comprehensively analyzing the error sources, including the telescope and the platform navigation system. Next, a linear pointing…
Qingjia Gao, Chong Wang, Xiaoming Wang, Zhenyu Liu + 4 more
'Qianglong Wang' 'Wenda Niu' 'Isabelle Ledoux-Rak'] Pointing error is a critical performance metric for vehicle-mounted single-photon ranging theodolites (VSRTs). Achieving high-precision pointing through processing and adjustment can incur significant costs. In this study, we propose a cost-effective digital…
Wenyan Li, Xiaolei Zhang, Lei Zhang, Xiang Wei + 4 more
'Peng Zhang' 'Zhipeng Xue' 'Xuewen Shu'] With the continuous improvement of remote sensing satellite resolution, laser communication technology has gained significant traction. The pointing accuracy of ground-based laser communication terminals is critical for the stability of satellite-ground laser transmission links.…
Loes C. J. van Dam, Marc O. Ernst, Ramesh Balasubramaniam
Random errors are omnipresent in sensorimotor tasks due to perceptual and motor noise. The question is, are humans aware of their random errors on an instance-by-instance basis? The appealing answer would be ‘no’ because it seems intuitive that humans would otherwise immediately correct for the errors online, thereby…
Meysam Ghanbari, Mohammad Taghi Dabiri, Osamah S. Badarneh, Mazen O. Hasna + 3 more
—Directional links in free-space optical (FSO), millimeter-wave (mmWave), and terahertz (THz) systems are a cornerstone of emerging 6G networks, yet their reliability is fundamentally limited by pointing errors and misalignment. Existing studies address this impairment using technology-specific definitions, models, and…
Mohammad Taghi Dabiri, Mazen O. Hasna
This paper focuses on providing an analytical framework for the quantification and evaluation of the pointing error at high-frequency millimeter wave (mmWave) and terahertz (THz) communication links. For this aim, we first characterize the channel of a point-to-point communication link between unstable transmitter (Tx)…
E. White, F. D. Ghigo, Richard Prestage, D. T. Frayer + 6 more
'R. J. Maddalena' 'P. T. Wallace' 'Joseph J. Brandt' 'Dennis Egan' 'J. D. Nelson' 'Jason Ray'] With a 100m×110m off-axis paraboloid dish, the Green Bank Telescope (GBT) is the largest fully steerable radio telescope on Earth. A major challenge facing large ground-based radio telescopes is achieving sufficient pointing…
Eun‐Ji Park, Hyunju Kim, Injung Lee, Byungjoo Lee
Pointing is the task of tracking a target with a pointer and confirming the target selection through a click action when the pointer is positioned within the target. Little is known about the mechanism by which users plan and execute the click action in the middle of the target tracking process. The Intermittent Click…
Priscilla Balestrucci, Marc Ernst
Many characteristics of sensorimotor adaptation are well predicted by the Kalman filter, a relatively simple learning algorithm for the optimal estimation of dynamic variables given noisy measurements. Yet not all Kalman filter predictions are confirmed empirically, suggesting that the model might be too simplistic to…
Michael Wiesing, Tatiana Kartashova, Eckart Zimmermann
Vision in depth is distorted. A similar distortion can be observed for pointing to visual targets in depth. It has been suggested that pointing errors in depth reflect the visual distortion. However, much research has suggested that in case visual information is not rich enough, the sensorimotor system involves prior…
Koushik Ghosh, Parthasarthi Sahu, Shashikanta Barik, Hemachander Subramanian
Enzymatic error correction ensures the fidelity of DNA replication, preserving biological information flow across evolutionary timescales. Error correction, as has been envisaged until now, requires the presence of sophisticated enzymes that utilize energy and/or information to correct errors. Here, we propose a…
Andrei Gorea, Lionel Granjon, Dov Sagi
Are we aware of the outcome of our actions? The participants pointed rapidly at a screen location marked by a transient visual target (T), with and without seeing their hand, and were asked to estimate (E) their landing location (L) using the same finger but without time constraints. We found that L and E are…
Bihani, Dhruv, Ullah, A. K. M. Amanat + 6 more
[DHRUV BIHANI](HTTPS://ORCID.ORG/0009-0006-6498-766X) ∗ , University of British Columbia, Okanagan, Canada [A. K. M. AMANAT ULLAH](HTTPS://ORCID.ORG/0000-0001-5402-0160) ∗ , University of British Columbia, Okanagan, Canada [CHARLES-OLIVIER DUFRESNE-CAMARO,](HTTPS://ORCID.ORG/0000-0002-8563-7523) University of British…
Omer Markovitch, Juntian Wu, Otto Sijbren
Copying information is vital for life's propagation. Current life forms maintain a low error rate in replication using complex machinery to prevent and correct errors. However, primitive life had to deal with higher error rates, limiting its ability to evolve. Discovering mechanisms to reduce errors would alleviate…
Yunfeng Zhang
Traditional relative pointing devices such as mice and trackpads are unsuitable for pointing at distant displays, because they encumber the users by requiring either a flat surface to operate on or being held by two hands. Past research has examined many new pointing methods, but few could surpass the speed and…
Surajit Nandi, Jonas Busk, Peter Bjørn Jørgensen, Tejs Vegge + 1 more
Workflows to predict chemical reaction networks based on density functional theory (DFT) are prone to systematic errors in reaction energy due to the extensive use of cheap DFT exchange-correlation functionals to limit computational cost. Recently, machine learning-based models are increasingly applied to mitigate this…
Authors not listed
Performing ab initio calculations on large molecular systems is challenging. Fragment-based quantum chemistry (FBQC) provides an efficient alternative. We introduce GAMA(Grid-Adapted-Manybody Analysis), a many-body based expansion (MBE) method that fragments a molecular system into grid-based monomers. Additionally…
Authors not listed
Material properties calculated using density functional theory (DFT) are often corrected to more closely match experimental values, but the most common correction method has flaws that lead to unphysical results and false positives in the material discovery process. In this work, we show that these flaws stem from the…
Montgomery Gray, Paige Bowling, John Herbert
A widespread belief persists that the Boys-Bernardi function counterpoise (CP) procedure "overcorrects" supramolecular interaction energies for the effects of basis-set superposition error. To the extent that this is true for correlated wave function methods, it is usually an artifact of low-quality basis sets, but the…
Anouk J. de Brouwer, Miriam Spering
To produce accurate movements, the human motor system needs to deal with errors that can occur due to inherent noise, changes in the body, or disturbances in the environment. Here, we investigated the temporal coordination of rapid corrections of the eye and hand in response to a change in visual target location during…