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空气质量模式的发展与应用对大气污染成因分析具有重要作用，区域空气质量模式受排放源精度、网格精度和理化机制影响，对城市小尺度空气质量模拟存在一定的局限性。为了实现区域-街道尺度污染物精细化模拟，中国科学院大气物理研究所LAPC国家重点实验室博士生王涛和李杰研究员联合国内外其他单位使用互联网交通态势大数据制作了北京市在路机动车动态高分辨率排放清单（百米级、小时），并实现了在路机动车清单、区域空气质量模...
ABB推出新产品DODGE®道齐UC带座轴承（图）
ABB DODGE道齐UC带座轴承 道齐
2022/9/1
多年来，DODGE®道齐的带座轴承以创新设计、高可靠性、使用便利性享誉业界，被一致公认为全球高品质带座轴承的“无冕之王”。目前，道齐推出符合GB国标和JIS标准，并且具备高性价比的UC带座外球面球轴承系列，以满足中国和亚洲市场客户的特定需求，并且可以和市场上采用相同标准的轴承产品互换。
A Framework for UC-Secure Commitments from Publicly Computable Smooth Projective Hashing
UC commitment smooth projective hash function SPHF
2019/9/23
Hash proof systems or smooth projective hash functions (SPHFs) have been proposed by Cramer and Shoup (Eurocrypt'02) and can be seen as special type of zero-knowledge proof system for a language. Whil...
Your Money or Your Life---Modeling and Analyzing the Security of Electronic Payment in the UC Framework
EMV Universal Composability Security Models
2019/8/19
EMV, also known as Chip and PIN, is the world-wide standard for card-based electronic payment. Its security wavers: over the past years, researchers have demonstrated various practical attacks, rangin...
Post-Quantum UC-Secure Oblivious Transfer in the Standard Model with Adaptive Corruptions
Smooth Projective Hash Functions Oblivious Transfer
2019/6/19
Since the seminal result of Kilian, Oblivious Transfer has proven to be a fundamental primitive in cryptography. In such a scheme, a user is able to gain access to an element owned by a server, withou...
UC-Commitment Schemes with Phase-Adaptive Security from Trapdoor Functions
Commitment Universal Composability Global Random Oracle
2019/5/21
We propose a generic framework for perfectly hiding UC-Commitment schemes in the Global Random Oracle model of Canetti \textit{el at.} (CCS 14). The main building block of our construction is a novel ...
Zero-knowledge SNARKs (zk-SNARKs) have recently found various applications in verifiable computation and blockchain applications (Zerocash), but unfortunately they rely on a common reference string (C...
溃结改良方改善DSS诱导的UC小鼠肠道炎症反应的机制研究
溃结改良方 溃疡性结肠炎 Treg Th17
2020/8/24
从效应T细胞活化的源头Treg、Th17细胞入手，探讨溃结改良方(Kuijie Gailiang Prescription，KGP)调节Th17和Treg细胞的平衡转化机制，揭示溃结改良方治疗溃疡性结肠炎（Ulcerative colitis，UC）的深层次作用机理及作用靶点。方法 采用3.5%DSS诱导复制UC小鼠模型，并随机分为正常组、模型组、5-ASA组和溃结改良方低、高剂量组，每组8只。观...
We define a new UC functionality (DL-extractable commitment scheme) that allows committer to open a commitment to a group element gxgx; however, the simulator will be able to extract its discrete loga...
A Post-Quantum UC-Commitment Scheme in the Global Random Oracle Model from Code-Based Assumptions
Commitment Scheme Universal Composability
2019/2/27
In this work, we propose the first post-quantum UC-commitment scheme in the Global Random Oracle Model, where only one non-programmable random oracle is available. The security of our proposal is base...
Multi-Protocol UC and its Use for Building Modular and Efficient Protocols
Building Modular Efficient Protocols
2019/1/26
We want to design and analyze protocols in a modular way by combining idealized components that we realize individually. While this is in principle possible using security frameworks that provide gene...
Efficient UC Commitment Extension with Homomorphism for Free (and Applications)
cryptographic protocols UC
2018/11/5
Homomorphic universally composable (UC) commitments allow for the sender to reveal the result of additions and multiplications of values contained in commitments without revealing the values themselve...
UC San Diego Researchers Solve Mystery of Oxygenation Connections in the Brain（图）
UC San Diego Researchers Oxygenation Connections the Brain
2017/11/23
Scientists have known that areas of the brain with similar functions—even those in different brain hemispheres—connect to share signals when the body rests, but they haven’t known how this “resting-st...
Hormones Help Tadpoles Trade Size For Survival In A Warming Climate,Says Uc Study（图）
Hormones Tadpoles Trade Size Warming Climate Uc Study
2017/11/23
Deep within aquatic ecosystems all over the world, certain toad species have managed to survive warmer and drier climate change. But the method behind their metamorphic adaptation to environmental cha...
UC biology study suggests a father’s nutrition before sex could contribute to the health of his offspring（图）
UC biology study suggests father’s nutrition before sex health of his offspring
2017/10/25
Doctors long have stressed the importance of good nutrition for expectant mothers.Now biologists at the University of Cincinnati say the father’s diet could play a similar role in the health of a baby...