47 research outputs found
When Web 3.0 Meets Reality: A Hyperdimensional Fractal Polytope P2P Ecosystems
Web 3.0 opens the world of new existence of the crypto-network-entity, which
is independently defined by the public key pairs for entities and the
connection to the Web 3.0 cyberspace. In this paper, we first discover a
spacetime coordinate system based on fractal polytope in any dimensions with
discrete time offered by blockchain and consensus. Second, the novel network
entities and functions are defined to make use of hyperdimensional
deterministic switching and routing protocols and blockchain-enabled mutual
authentication. In addition to spacetime network architecture, we also define a
multi-tier identity scheme which extends the native Web 3.0
crypto-network-entity to outer cyber and physical world, offering
legal-compliant anonymity and linkability to all derived identifiers of
entities. In this way, we unify the holistic Web 3.0 network based on
persistent spacetime and its entity extension to our cyber and physical world
Nerflets: Local Radiance Fields for Efficient Structure-Aware 3D Scene Representation from 2D Supervision
We address efficient and structure-aware 3D scene representation from images.
Nerflets are our key contribution -- a set of local neural radiance fields that
together represent a scene. Each nerflet maintains its own spatial position,
orientation, and extent, within which it contributes to panoptic, density, and
radiance reconstructions. By leveraging only photometric and inferred panoptic
image supervision, we can directly and jointly optimize the parameters of a set
of nerflets so as to form a decomposed representation of the scene, where each
object instance is represented by a group of nerflets. During experiments with
indoor and outdoor environments, we find that nerflets: (1) fit and approximate
the scene more efficiently than traditional global NeRFs, (2) allow the
extraction of panoptic and photometric renderings from arbitrary views, and (3)
enable tasks rare for NeRFs, such as 3D panoptic segmentation and interactive
editing.Comment: accepted by CVPR 202
MovingParts: Motion-based 3D Part Discovery in Dynamic Radiance Field
We present MovingParts, a NeRF-based method for dynamic scene reconstruction
and part discovery. We consider motion as an important cue for identifying
parts, that all particles on the same part share the common motion pattern.
From the perspective of fluid simulation, existing deformation-based methods
for dynamic NeRF can be seen as parameterizing the scene motion under the
Eulerian view, i.e., focusing on specific locations in space through which the
fluid flows as time passes. However, it is intractable to extract the motion of
constituting objects or parts using the Eulerian view representation. In this
work, we introduce the dual Lagrangian view and enforce representations under
the Eulerian/Lagrangian views to be cycle-consistent. Under the Lagrangian
view, we parameterize the scene motion by tracking the trajectory of particles
on objects. The Lagrangian view makes it convenient to discover parts by
factorizing the scene motion as a composition of part-level rigid motions.
Experimentally, our method can achieve fast and high-quality dynamic scene
reconstruction from even a single moving camera, and the induced part-based
representation allows direct applications of part tracking, animation, 3D scene
editing, etc.Comment: 10 page
Abnormalities of glucose and lipid metabolism in myocardial ischemia-reperfusion injury
Myocardial ischemia-reperfusion injury is a common condition in cardiovascular diseases, and the mechanism of its occurrence involves multiple complex metabolic pathways and signaling pathways. Among these pathways, glucose metabolism and lipid metabolism play important roles in regulating myocardial energy metabolism. Therefore, this article focuses on the roles of glucose metabolism and lipid metabolism in myocardial ischemia-reperfusion injury, including glycolysis, glucose uptake and transport, glycogen metabolism and the pentose phosphate pathway; and triglyceride metabolism, fatty acid uptake and transport, phospholipid metabolism, lipoprotein metabolism, and cholesterol metabolism. Finally, due to the different alterations and development of glucose metabolism and lipid metabolism in myocardial ischemia-reperfusion, there are also complex interregulatory relationships between them. In the future, modulating the equilibrium between glucose metabolism and lipid metabolism in cardiomyocytes and ameliorating aberrations in myocardial energy metabolism represent highly promising novel strategies for addressing myocardial ischemia-reperfusion injury. Therefore, a comprehensive exploration of glycolipid metabolism can offer novel theoretical and clinical insights into the prevention and treatment of myocardial ischemia-reperfusion injury
Research progress of circadian rhythm in cardiovascular disease: A bibliometric study from 2002 to 2022
Background: Given that the circadian rhythm is intricately linked to cardiovascular physiological functions, the objective of this investigation was to employ bibliometric visualization analysis in order to scrutinize the trends, hotspots, and prospects of the circadian rhythm and cardiovascular disease (CVD) over the past two decades. Methods: A thorough exploration of the literature related to the circadian rhythm and CVD was conducted via the Web of Science Core Collection database spanning the years 2002–2022. Advanced software tools, including citespace and VOSviewer, were employed to carry out a comprehensive analysis of the co-occurrence and collaborative relationships among countries, institutions, journals, references, and keywords found in this literature. Furthermore, correlation mapping was executed to provide a visual representation of the data. Results: The present study encompassed a total of 3399 published works, comprising of 2691 articles and 708 reviews. The publications under scrutiny were primarily derived from countries such as the United States, Japan, and China. The most prominent research institutions were found to be the University of Vigo, University of Minnesota, and Harvard University. Notably, the journal Chronobiology International, alongside its co-cited publications, had the most substantial contribution to the research in this field. Following an exhaustive analysis, the most frequently observed keywords were identified as circadian rhythm, blood pressure, hypertension, heart rate, heart rate variability, and melatonin. Furthermore, a nascent analysis indicated that future research might gravitate towards topics such as inflammation, metabolism, oxidative stress, and autophagy, thereby indicating new directions for investigation. Conclusion: This analysis represents the first instance of bibliometric scrutiny pertaining to circadian rhythm and its correlation with cardiovascular disease (CVD) through the use of visualization software. Notably, this study has succeeded in highlighting the recent research frontiers and prominent trajectories in this field, thereby providing a valuable contribution to the literature
BeSharing: A Copyright-aware Blockchain-enabled Knowledge Sharing Platform
In response to the coronavirus pandemic, COVID-19, the use of online media and teaching tools has soared, leading to rampant cheating and plagiarism. To provide a better online environment, A copyright-aware Blockchain-enabled Knowledge Sharing platform named as BeSharing, enables students to share part of their assignments or ideas without the worry of being plagiarized. Thanks to blockchain technology which ensures the safety of encrypted shared files and the immutability of the shared records, the intellectual property rights of students can be protected whenever plagiarism issues occur. At present, we have released the platform with the realization of relevant functions and finished the alpha test. We believe this platform has great potential to foster collaboration among students while protecting their ideas