25 papers · ranked by Valyu relevance
Adrien C. Descloux, Kristin S. Grußmayer, Aleksandra Radenovic
Localization microscopy is a super-resolution imaging technique that relies on the spatial and temporal separation of blinking fluorescent emitters. These blinking events can be individually localized with a precision significantly smaller than the classical diffraction limit. This sub-diffraction localization…
Maria Inês F. Gândara, Igor R. Efimov, Kedar K. Aras, Matteo Bertini
The goal of this study was to identify the spatial resolution requirements for accurate rotor detection and localization in human right ventricular tachyarrhythmias. Poor spatial resolution is often cited as a reason for the inaccuracy of cardiac mapping catheters in detecting and localizing arrhythmia rotors.…
YiRang Shin, Matthew R. Lowerison, Yike Wang, Xi Chen + 4 more
Ultrasound localization microscopy (ULM) enables deep tissue microvascular imaging by localizing and tracking intravenously injected microbubbles circulating in the bloodstream. However, conventional localization techniques require spatially isolated microbubbles, resulting in prolonged imaging time to obtain detailed…
YiRang Shin, Matthew R. Lowerison, Yike Wang, Xi Chen + 4 more
Ultrasound localization microscopy (ULM) is an emerging super-resolution imaging technique for deep tissue microvascular imaging. However, conventional localization methods are constrained by low microbubble (MB) concentration, as accurate localization requires a strict separation of MB point spread functions (PSFs).…
Ouyang Zhang, Kannan Srinivasan
Currently, accurate localization system based on commodity WiFi devices is not broadly available yet. In the literature, the solutions are based on either network infrastructure like WiFi router, which have at least three antennas, or sacrifice accuracy with coarse-grained information like RSSI. In this work, we design…
Ruth R. Sims, Sohaib Abdul Rehman, Martin O. Lenz, Leila Mureşan + 1 more
Single molecule localisation microscopy (SMLM) has opened a new window for imaging fluores cently labelled biological specimens. Common 3D SMLM techniques enable data collection across an axial range of 1 − 5μm with high precision. Despite the success of 3D single molecule imaging there is a real need to image larger…
Kyu-Won Kim, Gyu-In Jee
We propose a free-resolution probability distributions map (FRPDM) and an FRPDM-based precise vehicle localization method using 3D light detection and ranging (LIDAR). An FRPDM is generated by Gaussian mixture modeling, based on road markings and vertical structure point cloud. Unlike single resolution or…
Hongtong Li, Haiyang Zhan, Rui Ma, Yijun Liu + 6 more
Localization-based super-resolution techniques have revolutionized biomedical imaging by surpassing classical diffraction limits. However, their performance is fundamentally constrained by distortions of the point spread function (PSF) induced by the system and the sample, which are particularly prominent in the case…
Yongchun Lü, Xiangrui Zeng, Xinhui Tian, Xiao Shi + 6 more
'Xiaohui Zheng' 'Xiaodong Liu' 'Xiaofang Zhao' 'Xin Gao' 'Min Xu'] Background Resolution estimation is the main evaluation criteria for the reconstruction of macromolecular 3D structure in the field of cryoelectron microscopy (cryo-EM). At present, there are many methods to evaluate the 3D resolution for reconstructed…
Authors not listed
Carotenoids are naturally occurring biomolecules with potent antioxidant activity that humans must obtain through their diet, as they cannot synthesize them endogenously. These pigments are naturally produced by plants and microbes, including red yeast cells that act as micro-factories, particularly genera such as…
Jeril Kuriakose, Sandeep Joshi, Victor George
--- Localization is widely used in Wireless Sensor Networks (WSNs) to identify the current location of the sensor nodes. A WSN consist of thousands of nodes that make the installation of GPS on each sensor node expensive and moreover GPS may not provide exact localization results in an indoor environment. Manually…
Ananya Saha, Buddhadeb Sau
The network localization problem with convex and non-convex distance constraints may be modeled as a nonlinear optimization problem. The existing localization techniques are mainly based on convex optimization. In those techniques, the non-convex distance constraints are either ignored or relaxed into convex…
Deepali Virmani, Satbir Jain
— Sensor nodes are low cost, low power devices that are used to collect physical data and monitor environmental conditions from remote locations. Wireless Sensor Networks (WSN's) are collection of sensor nodes, coordinating among themselves to perform a particular task. Localization is defined as the deployment of the…
Jaromir Hrad, Lukas Vojtech, Martin Cihlar, Pavel Stasa + 3 more
'Marek Neruda' 'Filip Benes' 'Jiri Svub'] This paper deals with the issue of mobile device localization in the environment of buildings, which is suitable for use in healthcare or crisis management. The developed localization system is based on wireless Local Area Network (LAN) infrastructure (commonly referred to as…
Cláudia Soares, João Paulo Gomes, Beatriz Ferreira, João Paulo Costeira
'João Paulo Costeira'] Abstract—How to self-localize large teams of underwater nodes using only noisy range measurements? How to do it in a distributed way, and incorporating dynamics into the problem? How to reject outliers and produce trustworthy position estimates? The stringent acoustic communication channel and…
Nasir Saeed, Haewoon Nam, Tareq Y. Al-Naffouri, Mohamed‐Slim Alouini
—Current and future wireless applications strongly rely on precise real-time localization. A number of applications such as smart cities, Internet of Things (IoT), medical services, automotive industry, underwater exploration, public safety, and military systems require reliable and accurate localization techniques.…
Abdulkadir Karaagac, Pieter Suanet, Wout Joseph, Ingrid Moerman + 1 more
'Jeroen Hoebeke'] As the ideas and technologies behind the Internet of Things (IoT) take root, a vast array of new possibilities and applications is emerging with the significantly increased number of devices connected to the Internet. Moreover, we are also witnessing the fast emergence of location-based services with…
Samuel Ocko, Kiah Hardcastle, Lisa Giocomob, Surya Ganguli
Upon encountering a novel environment, an animal must construct a consistent environmental map, as well as an internal estimate of its position within that map, by combining information from two distinct sources: self-motion cues and sensory landmark cues. How do known aspects of neural circuit dynamics and synaptic…
David Gualda, Jesús Ureña, J.C. García, Enrique García + 1 more
This paper proposes a Simultaneous Calibration and Navigation (SCAN) algorithm of a multiple Ultrasonic Local Positioning Systems (ULPSs) that cover an extensive indoor area. The idea is the development of the same concept than SLAM (Simultaneous Localization and Mapping), in which a Mobile Robot (MR) estimates the map…
Koyomi Nakazawa, Antoine Lévrier, Sergii Rudiuk, Ayako Yamada + 2 more
Giant unilamellar vesicles (GUVs) are widely used minimal cell models where essential biological features can be reproduced, isolated and studied. Although precise spatio-temporal distribution of membrane domains is a process of crucial importance in living cells, it is still highly challenging to generate anisotropic…
Guido Pauli, G. Joseph Ray, Anton Bzhelyansky, Birgit Jaki + 18 more
Classical 1D 1H NMR spectra are prototypic for NMR spectroscopy in that they represent a wealth of chemical information encoded into convoluted graphs or patterns that contain complex features (aka multiplets), even for seemingly simple molecules. Accordingly, the utility of NMR depends on the theoretical and visual…
Authors not listed
Resolving molecular chirality at the atomic scale remains a critical challenge in chemistry. Conventional Optical Circular Dichroism spectroscopy often overlooks subtle and localized structural features. Here, we computationally investigate site-specific X-ray Circular Dichroism (XCD) across a series of…
Authors not listed
Hyperstructures and their hierarchical extensions—SuperHyperStructures—provide a versatile algebraic language for modeling multi-level and interdependent systems [1,2]. In materials and chemical sciences, structural descriptions naturally span a broad spectrum of characteristic length scales, commonly organized as…
Tianhao Chu, Yuling Wu, Wentao Qiu, Zihao Jiang + 3 more
Localized space coding and phase coding are two distinct strategies responsible, respectively, for representing abstract structure and sensory observations in neural cognitive maps. In spatial representation, localized space coding is implemented by place cells in the hippocampus (HPC), while phase coding is…
Haining Yu, Hongli Zhang, Binxing Fang, Xiangzhan Yu
In the Internet of Things a code resolution service provides a discovery mechanism for a requester to obtain the information resources associated with a particular product code immediately. In large scale application scenarios a code resolution service faces some serious issues involving heterogeneity, big data and…