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Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：Differentiability of volume functions for big classes
大类 体积函数 可微性
2023/4/17
We report a recent paper of Witt Nystrom, where he proved the differentiability of volume functions using deformation to the normal cone.
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：Chevalley formulae for the motivic Chern classes of the Schubert cells
舒伯特 细胞动机陈类 切瓦利公式
2023/4/14
The motivic Chern classes of the Schubert cells are the K-theoretic generalizations of the Chern-Schwartz-MacPherson classes in homology. I will report some joint work in progress with L. Mihalcea and...
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：Lyapunov stable classes for Singular Flows
奇异流 李雅普诺夫 稳定类
2023/4/18
In this talk, I will show that (nontrivial) Lyapunov stable classes of vector fields far from homoclinic tangencies contain periodic orbits. This gives a partial answer for the Palis Weak Density Conj...
A Critical Analysis of ISO 17825 (`Testing methods for the mitigation of non-invasive attack classes against cryptographic modules')
side-channel analysis leakage detection security certification
2019/9/16
The ISO standardisation of `Testing methods for the mitigation of non-invasive attack classes against cryptographic modules' (ISO/IEC 17825:2016) specifies the use of the Test Vector Leakage Assessmen...
On the EA-classes of known APN functions in small dimensions
EA-equivalence CCZ-equivalence Boolean functions
2019/4/11
Recently Budaghyan, Calderini and Villa (2018) introduced a procedure for investigating if CCZ-equivalence can be more general than EA-equivalence together with inverse transformation (when applicable...
Privacy Loss Classes: The Central Limit Theorem in Differential Privacy
differential privacy privacy loss
2018/11/19
In recent years, privacy enhancing technologies have gained tremendous momentum and they are expected to keep a sustained importance. Quantifying the degree of privacy offered by any mechanism working...
Ubiquitous Weak-key Classes of BRW-polynomial Function
weak key polynomial evaluation hash BRW-polynomial
2018/1/12
BRW-polynomial function is suggested as a preferred alternative of polynomial function, owing to its high efficiency and seemingly non-existent weak keys. In this paper we investigate the weak-key iss...
Humans recognize emotional arousal in vocalizations across all classes of terrestrial vertebrates: Evidence for acoustic universals
emotional arousal language evolution vocal communication
2017/8/28
Writing over a century ago, Darwin hypothesized that vocal expression of emotion dates back to our earliest terrestrial ancestors. If this hypothesis is true, we should expect to find cross-species ac...
Why Do We Like Our Classes?And Each Other?Our Brain Waves Tell Us,New Research Shows
Like Our Classes Each Other Our Brain Waves Tell Us
2017/7/19
The synchronization of brainwaves among students during class reflects how much they like the class and each other, a team of neuroscientists has found.“How well our brainwaves sync up with those of a...
Some Results on the Known Classes of Quadratic APN Functions
APN function quadratic function Walsh spectrum
2017/1/3
In this paper, we determine the Walsh spectra of three classes of quadratic APN functions and we prove that the class of quadratic trinomial APN functions constructed by G\"olo\u glu is affine equival...
Meet-in-the-Middle Attacks on Classes of Contracting and Expanding Feistel Constructions
Unbalanced Feistel Generic Attack Key Recovery
2016/12/29
We show generic attacks on unbalanced Feistel ciphers based on the meet-in-the-middle technique. We analyze two general classes of unbalanced Feistel structures, namely contracting Feistels and expand...
COUPLING REGULAR TESSELLATION WITH RJMCMC ALGORITHM TO SEGMENT SAR IMAGE WITH UNKNOWN NUMBER OF CLASSES
SAR Image Segmentation Segmentation with Unknown Number of Classes Regular Tessellation RJMCMC Algorithm
2016/11/23
This paper presents a Synthetic Aperture Radar (SAR) image segmentation approach with unknown number of classes, which is based on regular tessellation and Reversible Jump Markov Chain Monte Carlo (RJ...
AN ENTROPY-KL STRATEGY FOR ESTIMATING NUMBER OF CLASSES IN IMAGE SEGMENTATION ISSUES
entropy KL information spiltting/merging number of classes image segmentation fuzzy clustering
2016/11/23
different classes, to estimate the number of classes in image segmentation issues. In this strategy, the information of a homogeneous region is measured by entropy. Then a region is considered to be d...
Subatomic microscopy key to building new classes of materials
Subatomic microscopy new classes of materials
2016/9/12
Researchers at Penn State and the Molecular Foundry at Lawrence Berkeley National Laboratory are pushing the limits of electron microscopy into the tens of picometer scale, a fraction of the size of a...
'Belonging' can help keep talented female students in STEM classes
Belonging talented female students STEM classes
2016/9/12
Many women working in science, technology, engineering and mathematics (STEM) have faced a common experience at some point during their college days -- they walked into a classroom and found that they...