A software architecture is composed of a collection of design decisions. Each design decision helps or hinders certain Non-Functional Requirements (NFR). Current software architecture views focus on expressing compone...
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In this paper, we first provide a new theoretical understanding of the Evidence Pre-propagated Importance Sampling algorithm (EPIS-BN) (Yuan & Druzdzel 2003;2006b) and show that its importance function minimizes t...
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High-throughput data such as microarrays make it possible to investigate the molecular-level mechanism of cancer more efficiently. Computational methods boost the microarray analysis by managing large and complex data...
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In this paper we explore the integration among Geographical Information Systems (GIS) and Agent Based Simulation Tools. An Agent-Based Geographical Information System (ABGIS) could be characterized as a kind of system...
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ISBN:
(纸本)9780863418532
In this paper we explore the integration among Geographical Information Systems (GIS) and Agent Based Simulation Tools. An Agent-Based Geographical Information System (ABGIS) could be characterized as a kind of system integrating features commonly found in Geographical Information System with the features of Agent-Based Simulation Tools. ABGIS would give to scientists and researches, not necessarily computer experts, access to powerful simulation tools and an environment that is an excellent metaphor to represent our spatio-temporal world. With ABGIS we could explore the dynamics of spatiotemporal systems, and particularly but not exclusively, complex systems.
Burgeoning demands for communications bandwidth stress the abilities of military and civil spectrum managers to provide needed access to spectrum resources while taking appropriate measures to avoid causing harmful in...
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ISBN:
(纸本)1424406633
Burgeoning demands for communications bandwidth stress the abilities of military and civil spectrum managers to provide needed access to spectrum resources while taking appropriate measures to avoid causing harmful interference to legacy users. Empirical analysis shows that radio frequency (RF) bandwidth is often available: measurement data indicate that while most channels are used at some times, most channels remain unused at any given time. Going forward, so-called "smart radio" technologies will be able to exploit these holes in the RF spectrum and will play a crucial role in achieving the core objectives of efficient spectrum management. The United States Defense Advanced Research Projects Agency's ("DARPA") NeXt Generation Communications program ("XG") is on the vanguard of smart radio innovations. In particular, XG technology uses automated intelligence at a system's edges in order to navigate real-time fluctuations in spectral conditions that cannot be precisely predicted in advance. This dynamism will enable opportunistic use of intermittently available spectrum. This paper examines how the introduction of smart radio technologies fit within past precedents and current regulatory developments involving shared use of spectrum resources. The key finding is that implementation of smart radios in the near term would represent an incremental policy step that is consistent with policy trends and recent regulatory actions. Two perspectives militate in favor of this conclusion. First, smart radio systems enable regulators and spectrum managers to more efficiently achieve long-held policy and spectrum management objectives. And second, the regulatory prospects of smart radios are further buoyed by contemporary examples of approved technologies and sharing methods that are modest precursors to XG. Case studies are used to underscore that while smart radios promote vast gains in spectrum accessibility and interference avoidance, implementation of smart radio systems f
High-throughput microarrays inform us on different outlooks of the molecular mechanisms underlying the function of cells and organisms. While computational analysis for the microarrays show good performance, it is sti...
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The establishment of the Women in science and engineering (WiSE) program represents the serious commitment of the University of Southern California to address the under-representation of women in science and engineeri...
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Some real problems are more naturally modeled by hybrid Bayesian networks that consist of mixtures of continuous and discrete variables with their interactions described by equations and continuous probability distrib...
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Some real problems are more naturally modeled by hybrid Bayesian networks that consist of mixtures of continuous and discrete variables with their interactions described by equations and continuous probability distributions. However, inference in such general hybrid models is hard. Therefore, existing approaches either only deal with special instances, such as Conditional Linear Gaussians (CLGs), or approximate a general model with a restricted version and then perform inference on the simpler model. However, results thus obtained highly depend on the quality of the approximations. This paper describes an importance sampling-based algorithm that directly deals with hybrid Bayesian networks constructed in the most general settings and guarantees to converge to the correct answers given enough time.
For room temperature operation and reproducibility of single electron transistors (SETs), we propose a fabrication method of an SET with a self-aligned quantum dot. The quantum dot is formed by selective etch of a sil...
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For room temperature operation and reproducibility of single electron transistors (SETs), we propose a fabrication method of an SET with a self-aligned quantum dot. The quantum dot is formed by selective etch of a silicon nanowire on a planarized surface and subsequent deposition and etch-back of poly-silicon. The device is named as PQD-SET, i.e., poly-silicon quantum dot SET. PQD-SET shows clear Coulomb oscillation at room temperature.
In order to assist driver's vision, a real-time recognition system for traffic signs is proposed. After detecting sign candidates, biologically inspired opponent-color filters are used to extract symbol parts of s...
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ISBN:
(纸本)9781617387777
In order to assist driver's vision, a real-time recognition system for traffic signs is proposed. After detecting sign candidates, biologically inspired opponent-color filters are used to extract symbol parts of signs. After normalizing the size of symbol, structural features are calculated to identify the sign. 5572 segmented images are used to design the algorithm. In a real-time system, the same sign in a sequence of frames is tracked, and a majority vote is used to integrate the recognition results. For test data, 93.8% recall rate and 99.3% precision rate could be attained. In-vehicle experiment also showed high recall and precision rates.
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