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Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：A novel and faster quantum-inspired algorithm for solving linear systems
线性系统 新颖 量子衍生算法
2023/4/17
In this talk, we introduce a modified classical algorithm to solve linear systems in a model that resembles the QRAM used by quantum linear solvers. Specifically, we demonstrate that for the linear sy...
Unlike in humans, when computer “brains” evolve, they get smaller and smaller. This is because the components that perform calculations and consolidate stored information work more efficiently when th...
Topological materials, an exotic class of materials whose surfaces exhibit different electrical or functional properties than their interiors, have been a frontier of research in the past decade — a f...
Building better batteries, faster（图）
电池 机器学习 新型电池材料
2023/6/6
To help combat climate change, many car manufacturers are racing to add more electric vehicles in their lineups. But to convince prospective buyers, manufacturers need to improve how far these cars ca...
New hardware offers faster computation for artificial intelligence, with much less energy（图）
新硬件 人工智能 计算速度 模拟深度学习
2023/6/6
As scientists push the boundaries of machine learning, the amount of time, energy, and money required to train increasingly complex neural network models is skyrocketing. A new area of artificial inte...
Conventional batteries are a lot like camels. They’re great for storage and transportation, but they’re not exactly speedy.
Massages feel good, but do they actually speed muscle recovery? Turns out, they do. Scientists at the Wyss Institute and Harvard John A. Paulson School of Engineering and Applied Sciences applied prec...
Baltic herring larvae appear earlier and grow faster due to climate change
climate change cological system herring appear earlier herring grow faster
2021/8/4
According to a recent research, both developmental stages in Baltic herring larvae, small and large, have shifted their timing to earlier dates.
Greenland is on track to lose ice faster this century than in any other over the past 12,000 years（图）
Greenland lose ice faster century past 12,000 years
2020/10/10
Greenland's rate of ice loss this century is likely to greatly outpace that of any century over the past 12,000 years, a new study concludes.The U.S. National Science Foundation-supported researc...
以宁夏16套枸杞农田实景监测系统2018年和2019年拍摄的图像作为资料，结合枸杞开花期和果实成熟期的植物学特征，利用更快速的基于区域的卷积神经网络（Faster R-CNN）方法对图像进行训练、分类，构建枸杞开花期和果实成熟期的识别算法，以平均精确率（AP）和平均精度均值（mAP）作为模型的评价指标，并将自动识别结果与专家目视判断结果和田间观测记录进行对比。结果表明：当网络结构中重要超参数批尺寸...
Sunlight degrades polystyrene faster than expected（图）
Sunlight polystyrene faster expected
2019/10/22
New research published by scientists at the Woods Hole Oceanographic Institution shows that polystyrene, one of the world's most ubiquitous plastics, may degrade in decades or centuries when exposed t...
Faster Sieving Algorithm for Approximate SVP with Constant Approximation Factors
foundations lattice techniques
2019/9/16
Abstract. There is a large gap between theory and practice in the complexities of sieving algorithms for solving the shortest vector problem in an arbitrary Euclidean lattice. In this paper, we work t...
Vintage film shows that Thwaites Glacier ice shelf has melted faster than previously observed（图）
Vintage film Thwaites Glacier ice melted faster
2019/10/18
By combining two powerful technologies, scientists are taking diabetes research to a new level. In a study led by Harvard University's Kevin Kit Parker, microfluidics and human insulin-producing beta ...
Faster homomorphic encryption is not enough: improved heuristic for multiplicative depth minimization of Boolean circuits
somewhat homomorphic encryption multiplicative depth Boolean functions
2019/8/27
In somewhat homomorphic encryption schemes (e.g. B/FV, BGV) the size of ciphertexts and the execution performance of homomorphic operations depends heavily on the multiplicative depth. The multiplicat...
Stronger and Faster Side-Channel Protections for CSIDH
CSIDH Isogeny-based post-quantum cryptography key exchange
2019/7/22
CSIDH is a recent quantum-resistant primitive based on the difficulty of finding isogeny paths between supersingular curves. Recently, two constant-time versions of CSIDH have been proposed: first by ...