In 2016, Albrecht, Bai and Ducas and independently Cheon, Jeong and Lee presented very similar attacks to break the NTRU cryptosystem with larger modulus than in the NTRUEncrypt standard. They allow to recover the secret key given the public key of Fully Homomorphic Encryption schemes based on NTRU ideas. Hopefully, these attacks do not endanger the security of the NTRUEncrypt, but shed new lig...

The discovery of superconducting materials has led to their use in technological marvels such as magnetic-field sensors in MRI machines, powerful research magnets, short transmission cables, and high-speed trains. Despite such applications, the uses of superconductors are not widespread because they function much below room-temperature, hence the costly cooling. Since the discovery of Cu- and F...

In this work, a switched lattice-based quantizer for the quantization of speech LSF parameters is presented. LSF di erence values are rst quantized using a scalar quantizer, as well as a two dimensional vector quantizer, and subsequently adjusted for a lower bit-rate using a lattice. A Euclidean distance measure is used as the distortion measure for the design, while a spectral distortion measu...

We describe the impact that future lattice QCD calculations can have on the determination of the parameters of the standard model (quark masses, coupling constant, and particularly the CKM matrix elements) and the search for new physics beyond. We consider the impact of calculations requiring CPU resources ranging from what is possible by the end of 2007 (≈ 10 TFlop-yr with USQCD resources), th...

The particle size distribution of the resultant cobalt ferrite samples was determined from Scanning Electron Microscopy (SEM) images using the granulometry image analysis method. Results showed the nanosized particles of the samples. The X-Ray Diffraction (XRD) patterns of samples were also analyzed by Rietveld refinement method. The results indicated that the precipitated sample at 95 <sup...

ruthenium dioxide nanoparticles (ruo2 ) with an average particle size of 50 nm are readily synthesized from rucl3.xh2o via the precipitation process in the presence of in-situ sodium octanoate as anionic surfactant. the phase composition, morphology, lattice parameters and size of nanoparticles in these products are characterized by fourier transform infrared spectroscopy (ft-ir), x-ray diffrac...