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Category Archive: NS2 PROJECTS FOR M.E

Transition profile control for broadband visible supercontinuum generation in tapered PCF

Tapered photonic crystal fibers with different transition profiles were designed and fabricated to control the visible dispersive wave generation process, and broadband visible supercontinuum (350–700 nm) was achieved.

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Evaluation of Probability Transformations of Belief Functions for Decision Making

The transformation of belief function into probability is one of the most important and common ways for decision making under the framework of evidence theory. In this paper, we focus on the evaluation of such probability transformations (PTs), which are crucial for their proper applications and the design of new ones. Shannon entropy or probabilistic […]

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8GSps 6bit DAC in 0.18um SiGe technology

This paper describes the circuit design and measured performance of a 6-bit 8-GS/s current-steering DAC. A CML interface supporting the maximum conversion rate of 8Gbps is integrated in the chip. A PRBS-7 generator is built in the chip for synchronization as well as for data descrambling. In order to realize good linearity performance, a 2-2-2 […]

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Run and Be Safe: Mixed-criticality scheduling with temporary processor speedup

Mixed-Criticality systems are arising due to the push from several major industries including avionics and automotive, where functionalities with different safety criticality levels are integrated into a modern computing platform to reduce size, weight and energy. The state-of-the-art research has focused on protecting critical tasks under the threat of task overrun, which is achieved by […]

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Investigation of Gallium Nitride devices benefits on LLC resonant DC-DC converter

This paper investigates the Gallium Nitride (GaN) devices benefits on the LLC resonant DC-DC converter. First, the relationship between the device parameters and converter current based on an analytical loss model of LLC resonant converter has been established. After that, the loss analysis and comparison between Si-based and GaN-based converter is presented. The GaN-based design […]

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Incremental Support Vector Learning for Ordinal Regression

Support vector ordinal regression (SVOR) is a popular method to tackle ordinal regression problems. However, until now there were no effective algorithms proposed to address incremental SVOR learning due to the complicated formulations of SVOR. Recently, an interesting accurate on-line algorithm was proposed for training ν-support vector classification (ν-SVC), which can handle a quadratic formulation […]

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Anonymous multi-receiver ID-based signcryption scheme

In earlier multi-receiver signcryption schemes, in order to help the authorised receivers to find the corresponding information for decryption from the ciphertext, the list of identities of all authorised receivers should be included in the ciphertext as a necessary element. However, this method has directly led to the privacy leakage problem of receivers. Later, several […]

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Audit-Free Cloud Storage via Deniable Attribute-based Encryption

Cloud storage services have become increasingly popular. Because of the importance of privacy, many cloud storage encryption schemes have been proposed to protect data from those who do not have access. All such schemes assumed that cloud storage providers are safe and cannot be hacked; however, in practice, some authorities (i.e., coercers) may force cloud […]

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Eikonal Analysis of the Boundaryless Beam Propagation Method

The boundaryless beam propagation method has been reported to suffer from reflections due to frequency aliasing. We propose an alternate explanation of reflection in the method, based on eikonal analysis of the wave equation in the mapped space, and show that reflection starts much before aliasing happens. We theoretically predict the reflection coefficient profile in […]

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Spun-Related Effects on Optical Properties of Spun Silica Optical Fibers

Spun-related effects on optical properties of silica optical fibers have been investigated experimentally. In addition to the previously known spun effects on polarization mode dispersion (PMD), we observed previously unknown spun-related effects on mode field diameter (MFD), cutoff wavelength and Verdet constant. These effects are significant at highly spun (short pitch length) fibers which are […]

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