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In this paper we present a model Cyber Security course primarily designed to address the educational and training needs for developing secure software intensive systems. The course is designed, within a Computer Science curriculum, to satisfy the national requirements of the Information Assurance Workforce Improvement Program (per DoD8570.01-Mfrom 11.10.2015), for Tiers II and III jobs, primarily...
This work is based on an extension of the Petri net framework. Our model relies on the definition of a priority relation between conflicting transitions, which is encoded in a compact manner by orienting the edges of a transition conflict graph. The benefit is that this allows the use of a successor function for the study of dynamic processes from a global point of view, independent from a particular...
Due to the complex environment conditions, many surveillance videos are captured from cameras which are influenced by shaking more or less. This presents a significant challenge for background-modeling-based video coding since it is difficult to generate good background frames from such shaking videos. To solve this problem, this paper proposes a global motion compensation method using motion vectors...
We show that both the Lempel-Ziv-77 and the Lempel-Ziv-78 factorization of a text of length n on an integer alphabet of size σ can be computed in O(n lg σ) time (linear time if we allow randomization) using O(n lg σ) bits of working space. Given that a compressed representation of the suffix tree is loaded into RAM, we can compute both factorizations in linear time using O(n) space.
Regression Wavelet Analysis (RWA) is a novel wavelet-based scheme for coding hyperspectral images that employs multiple regression analysis to exploit the relationships among spectral wavelet-transformed components. The scheme is based on a pyramidal prediction, using different regression models, to increase the statistical independence in the wavelet domain. For lossless coding, RWA has proven to...
This paper presents a novel approach based on structure recurrence in XML documents for Android mobile devices. The model identifies recurrent structures and gives a feasible solution to be easily adapted for resource constrained mobile devices. XML files with sequentially repetitive blocks of structures can be processed differently to reduce the processing time. It relieves the parser from the computationally...
Sparse coding models have been widely used to decompose monocular images into linear combinations of small numbers of basis vectors drawn from an overcomplete set. However, little work has examined sparse coding in the context of stereopsis. In this paper, we demonstrate that sparse coding facilitates better depth inference with sparse activations than comparable feed-forward networks of the same...
In this paper we provide a general process to create the most K-groups based on incomplete profiles and conditional preferences. The proposed approach is shown to be a combination of techniques that each output is the input of the next. It solves three problems: studying the incompletenesses of profiles based on conditional preferences, distances ans similarity measurement, and finding the top credible...
Rate control has been regarded as an indispensable video coding tool for virtually any application involving video transmission. With the advent of many flexible tools introduced in the current state-of-the-art High Efficiency Video Coding (HEVC) standard, previous Rate-Distortion (RD) models used for rate control become insufficiently accurate. To overcome this issue, a new RD model has been recently...
The recently proposed Regression Wavelet Analysis (RWA) scheme holds a great promise as a spectral transform for compressing hyperspectral images due to its low complexity, reversibility, and demonstrated superior coding performance. The scheme is based on a pyramidal prediction, using multiple regression analysis, to exploit statistical dependence in the wavelet domain. For lossless coding, RWA has...
This paper analyses the receiver of 40GBASE PCS Sub layer specified by IEEE 802.3ba CSMA/CD standards. Based on the analysis, possible optimization parameters for the receiver FIFO are identified. Proper functionality of the proposed design is verified with simulation results. The optimization of receiver FIFO design may lead to reduce the gate count, area and power consumption in ASIC design.
Optimistic simulation yields impressive performance gains for many models. State saving is a quick way to provide the rollback mechanism required for this approach, but it has some drawbacks: it may not handle models with massive states or be able to support memory-constrained systems. This work presents a novel approach to state saving by storing only the relative changes caused by an event. Compressing...
In this paper, a new kind of Fisher Vector (FV) model, named Scale FV (ScaleFV), is proposed to ameliorate visual feature encoding for human action recognition. Although several researches have been proposed for feature encoding, the temporal scale information is almost ignored. Similar to the spatial scale information which has shown to be important in extracting and encoding visual features, the...
In this paper, we present precise time and energy models for an intra-only HEVC video encoder. These models are a step forward to understand and estimate the computational complexity and energy demands of an HEVC encoder, which in turn opens the path to finely tuning the computational resources that are dedicated to this purpose. Our models estimate the complexity and energy consumed by the HEVC encoder,...
With the growing demand for easy and reliable generation of 3D models representing real-world objects and environments in mobile cloud computing platforms, new schemes for acquisition, storage and transmission of 3D meshes are required. In general, 3D meshes consist of two distinct components: vertex positions and vertex connectivity. Vertex position encoders are much more resource demanding than...
This paper compares widely employed simulation modeling approaches: System Dynamics (SD) and Discrete Event Simulation (DES). SD and DES follow two quite different modeling philosophies and can bring very different but complimentary insights in understanding to the same ‘real world’ problem. An exploratory study is undertaken to investigate the ability of new practitioners to assimilate and then put...
Conceptual modeling is the abstraction of a simulation model from the part of the real world it is representing; in other words, choosing what to model, and what not to model. This is generally agreed to be the most difficult, least understood and most important task to be carried out in a simulation study. In this tutorial the problem of conceptual modeling is first illustrated through an example...
We proposed a visual saliency detection model for color images based on the reconstruction residual of quaternion sparse model in this paper. This algorithm measures saliency of color image region by the reconstruction residual and performs more consistent with visual perception than current sparse models. In current sparse models, they treat the color images as multiple independent channel images...
In this paper, we analyze the binary arithmetic coding of High Efficiency Video Coding (HEVC) and the second generation of audio and video coding standard (AVS2). Then an optimized probability estimation scheme is proposed for arithmetic coder. The proposed scheme is incorporated into the HEVC reference software (HM 16.0) and AVS2 reference software (RD 10.1). Experimental results demonstrate that...
We propose an Augmented Visual Intelligence (AVI) framework to assist human in vision- and memory-related tasks. The AVI framework exploits wearable cameras and ambient computing facilities to empower a user's vision and memory functions by answering four types of queries central to visual activities. In particular, the Extended Visual Memory (EVM) model plays a central role in AVI. Learning of EVM...
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