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Engineers solve a mystery on the path to smaller, lighter batteries（图）
电池 树枝状金属丝 固态锂电池
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2023/6/6
A discovery by MIT researchers could finally unlock the door to the design of a new kind of rechargeable lithium battery that is more lightweight, compact, and safe than current versions, and that has...
More carbon in the oceans can lead to smaller fish
More carbon oceans lead smaller fish
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2020/8/14
As humans continue to send large quantities of carbon into the atmosphere, much of that carbon is absorbed by the oceans. Now researchers from the University of Connecticut and other institu...
Approximate Trapdoors for Lattices and Smaller Hash-and-Sign Signatures
Digital Signature Lattice
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2019/9/16
We study a relaxed notion of lattice trapdoor called approximate trapdoor, which is defined to be able to invert Ajtai's one-way function approximately instead of exactly. The primary motivation of ou...
New Circuit Minimization Techniques for Smaller and Faster AES SBoxes
AES SBox circuit area circuit depth
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2019/7/15
In this paper we consider various methods and techniques to find the smallest circuit realizing a given linear transformation on nn input signals and mm output signals, with a constraint of a maximum ...
Tweaking the Asymmetry of Asymmetric-Key Cryptography on Lattices: KEMs and Signatures of Smaller Sizes
lattice public-key encryption digital signature
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2019/5/21
Lattice-based cryptosystems are less efficient than their number-theoretic counterparts (based on RSA, discrete logarithm, etc.) in terms of key and ciphertext (signature) sizes. For adequate security...
Compact Multi-Signatures for Smaller Blockchains
ASM Smaller Blockchains
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2018/5/28
We construct new multi-signature schemes that provide new functionality. Our schemes are designed to reduce the size of the Bitcoin blockchain, but are useful in many other settings where multi-signat...
Field lifting for smaller UOV public keys
Post-Quantum Cryptography Multivariate Cryptography Signature Schemes
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2017/8/17
Most Multivariate Quadratic (MQ) signature schemes have a very large public key, which makes them unsuitable for many applications, despite attractive features such as speed and small signature sizes....
New Techniques Make RFID Tags 25 Percent Smaller
RFID Tags 25 Percent Smaller
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2016/5/19
AC-DC rectifier and storage capacitors take up 25% or more of chip area for cost-sensitive passive RFID tags. In this work, we show that these components can be eliminated by utilizing a RF-only circu...
On Decomposition of an NFSR into a Cascade Connection of Two Smaller
stream ciphers nonlinear feedback shift registers
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2016/1/8
Nonlinear feedback shift registers (NFSRs) are an important type of sequence
generators used for building stream ciphers. The shift register used in Grain, one
of eSTREAM finalists, is a cascade con...
Smaller Keys for Code-Based Cryptography: QC-MDPC McEliece Implementations on Embedded Devices
MDPC LDPC FPGA
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2015/12/30
In the last years code-based cryptosystems were established as promising alternatives for
asymmetric cryptography since they base their security on well-known NP-hard problems and still
show decent ...
Smaller is better for nanotube analysis（图）
Smaller nanotube analysis
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2015/10/13
In a great example of “less is more,” Rice University scientists have developed a powerful method to analyze carbon nanotubes in solution.The researchers’ variance spectroscopy technique zooms in on s...
Establishing windbreaks: how rapidly do the smaller tree transplants reach the height of the larger ones?
landscape rehabilitation arable soil
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2015/5/5
The aim of this study is to identify a period of time over which smaller, less costly tree transplants can
reach the height of larger tree transplants and thus offset their performance. The followin...
Smaller and cheaper particle accelerators?
Smaller cheaper particle accelerators
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2015/4/29
Traditionally, particle accelerators have relied on electric fields generated by radio waves to drive electrons and other particles close to the speed of light. But in radio-frequency machines there i...
BLAKE2: simpler, smaller, fast as MD5
hash functions tree hashing
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2014/3/12
We present the hash function BLAKE2, an improved version of the SHA-3 finalist BLAKE optimized for speed in software. Target applications include cloud storage, intrusion detection, or version control...
Schooling has Smaller or Insignificant Effects on Adult Health in the US than Suggested by Cross-Sectional Associations: New Estimates Using Relatively Large Samples of Identical Twins
Schooling, Education, Twins, Adult Health, Cross-Sectional Data, Mid-Atlantic Twin Registry Minnesota Twin Registry NAS-NRC Twin Registry of WWII Military Veterans Health Outcomes Schooling Attainment
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2014/3/31
Adult health outcomes and health behaviors generally are strongly associated with schooling attainment. But such associations do not necessarily imply that schooling has causal effects on health outco...