11 research outputs found
Moire synaptic transistor for homogeneous-architecture reservoir computing
Reservoir computing has been considered as a promising intelligent computing
paradigm for effectively processing complex temporal information. Exploiting
tunable and reproducible dynamics in the single electronic device have been
desired to implement the reservoir and the readout layer of reservoir computing
system. Two-dimensional moire material, with an artificial lattice constant
many times larger than the atomic length scale, is one type of most studied
artificial quantum materials in community of material science and
condensed-matter physics over the past years. These materials are featured with
gate-tunable periodic potential and electronic correlation, thus varying the
electric field allows the electrons in the moire potential per unit cell to
exhibit distinct and reproducible dynamics, showing great promise in robust
reservoir computing. Here, we report that a moire synaptic transistor can be
used to implement the reservoir computing system with a homogeneous
reservoir-readout architecture. The synaptic transistor is fabricated based on
a h-BN/bilayer graphene/h-BN moire heterostructure, exhibiting
ferroelectricity-like hysteretic gate voltage dependence of resistance. Varying
the magnitude of the gate voltage enables the moire transistor to be switched
between long-term memory and short-term memory with nonlinear dynamics. By
employing the short- and long-term memory as the reservoir nodes and weights of
the readout layer, respectively, we construct a full-moire physical neural
network and demonstrate that the classification accuracy of 90.8% can be
achieved for the MNIST handwritten digit database. Our work would pave the way
towards the development of neuromorphic computing based on the moire materials
The Sauceboat, From Specimen to Relic: âReinventingâ History Using Historical Objects
This project is a response to the curatorial crisis that focuses on expanding the museum collectionâs scale yet neglects the archaeological collectionâs life after it has arrived at the museum. Building upon the thesis and method of âobject biography,â it focuses on a silver sauceboat in the collection of the Phillips Museum of Art at Franklin and Marshall College. The paperâs trajectory follows two main avenues of investigation that study items and their related historical and cultural crises. This article first conducts provenance research on the sauceboat and further explores the potential of object biography as a narrative in curating âbulkâ collections at museums. This article argues that a close examination of an artifactâs lifetime story/provenance aids art historians and museum professionals in using material objects to present the âpast.â It concludes with a proposal to display the sauceboat within a contextual museum setting and an exploration of the value of practicing object biographies to contextualize the use of images/visuals/material objects to reinterpret cultural artifacts
Design and Implementation of an Intelligent Assistive Cane for Visually Impaired People Based on an Edge-Cloud Collaboration Scheme
Visually impaired people face many inconveniences in daily life, and there are problems such as high prices and single functions in the market of assistance tools for visually impaired people. In this work, we designed and implemented a low-cost intelligent assistance cane, particularly for visually impaired individuals, based on computer vision, sensors, and an edge-cloud collaboration scheme. Obstacle detection, fall detection, and traffic light detection functions have been designed and integrated for the convenience of moving for visually impaired people. We have also designed an image captioning function and object detection function with high-speed processing capability based on an edge-cloud collaboration scheme to improve the user experience. Experiments show that the performance metrics have an aerial obstacle detection accuracy of 92.5%, fall detection accuracy of 90%, and average image retrieval period of 1.124 s. It proves the characteristics of low power consumption, strong real-time performance, adaptability to multiple scenarios, and convenience, which can ensure the safety of visually impaired people when moving and can help them better perceive and understand the surrounding environment
Design and Implementation of an Intelligent Assistive Cane for Visually Impaired People Based on an Edge-Cloud Collaboration Scheme
Visually impaired people face many inconveniences in daily life, and there are problems such as high prices and single functions in the market of assistance tools for visually impaired people. In this work, we designed and implemented a low-cost intelligent assistance cane, particularly for visually impaired individuals, based on computer vision, sensors, and an edge-cloud collaboration scheme. Obstacle detection, fall detection, and traffic light detection functions have been designed and integrated for the convenience of moving for visually impaired people. We have also designed an image captioning function and object detection function with high-speed processing capability based on an edge-cloud collaboration scheme to improve the user experience. Experiments show that the performance metrics have an aerial obstacle detection accuracy of 92.5%, fall detection accuracy of 90%, and average image retrieval period of 1.124 s. It proves the characteristics of low power consumption, strong real-time performance, adaptability to multiple scenarios, and convenience, which can ensure the safety of visually impaired people when moving and can help them better perceive and understand the surrounding environment
A concise way to prevent bloom risk in ecological use of reclaimed water: Determination of the threshold by model calculation
The risk of algal blooms in landscape water bodies replenished by reclaimed water (RW) prompted the scientific management of RW discharge issues. Mathematical models are concise and convincing methods to stimulate algal growth and calculate thresholds for water quality control. This study presented three types of models, including one-parameter models, multiple-parameter models, and ecosystem dynamic models. Key influencing factors (such as nutrient concentration, light intensity, temperature, biotic processes, specific hydraulic conditions, etc.) are taken into consideration in these models. The work provided feasible methods for the management of reclaimed water to prevent water bloom outbreaks
tRF-Gln-CTG-026 ameliorates liver injury by alleviating global protein synthesis
Abstract tsRNAs (tRNA-derived small RNAs), as products of the stress response, exert considerable influence on stress response and injury regulation. However, it remains largely unclear whether tsRNAs can ameliorate liver injury. Here, we demonstrate the roles of tsRNAs in alleviating liver injury by utilizing the loss of NSun2 (NOP2/Sun domain family, member 2) as a tsRNAs-generating model. Mechanistically, the loss of NSun2 reduces methyluridine-U5 (m5U) and cytosine-C5 (m5C) of tRNAs, followed by the production of various tsRNAs, especially Class I tsRNAs (tRF-1s). Through further screening, we show that tRF-Gln-CTG-026 (tG026), the optimal tRF-1, ameliorates liver injury by repressing global protein synthesis through the weakened association between TSR1 (pre-rRNA-processing protein TSR1 homolog) and pre-40S ribosome. This study indicates the potential of tsRNA-reduced global protein synthesis in liver injury and repair, suggesting a potential therapeutic strategy for liver injury