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We present results from a series of tracer dye experiments where ocean plume concentration is measured using unmanned surface vessels. The goal of the study is to characterize the fine-scale spatiotemporal plume structure which is used for developing and evaluating autonomous robotic sampling strategies. We present a description of the qualitative characteristics of experimentally generated marine...
Obesity has been linked to several types of cancer. Access to adequate health information activates people's participation in managing their own health, which ultimately improves their health outcomes. Nevertheless, the existing online information about the relationship between obesity and cancer is heterogeneous and poorly organized. A formal knowledge representation can help better organize and...
Robust finite-time (FT) stabilization of uncertain continuous-time singular systems is of concern in this paper. By adopting a Lyapunov-like functional (LLF) and the finite-time stability (FTS) technique, the linear matrix inequality (LMI)-based conditions are derived for uncertain continuous-time singular systems to be stabilizable. Then, based on solving these LMIs, a FT H-infinite state feedback...
To improve cancer survival rates and prognosis, one of the first steps is to improve our understanding of contributory factors associated with cancer survival. Prior research has suggested that cancer survival is influenced by multiple factors from multiple levels. Most of existing analyses of cancer survival used data from a single source. Nevertheless, there are key challenges in integrating variables...
This paper presents an observer-based motion control scheme for a single mobile robot to track and monitor a dynamic pollutant plume propagation in m-dimensional space. The spatiotemporal dynamics of the pollutant plume is modeled by an advection-diffusion partial differential equation (PDE), and the plume front is described by a level set with a prespecified threshold value. In the suggested control...
As the advantages of good convergence and less computing time in estimating multiple parameters, genetic algorithm (GA) has been applied to estimate the parameters of the multiple scattering centers. It is found that various objective functions (OF) selected in GA yields different estimation results. The performance comparison among different OFs are investigated in detail, based on which, an optimal...
This paper presents a novel compact planar filtering crossover. Such co-design circuit is equal to one conventional crossover plus two bandpass filters, which can realize circuit miniaturization. Moreover, the resonator is shared by the two transmission paths while they are isolated with each other. Thus, compactness is obtained. For validation, the filtering crossover is implemented with each path...
This paper presents a method to extract locations of sliding scattering centers of conducting streamlined target based on surface equivalent currents. To validate feasibility of this method, extracted results of two streamlined targets have been compared with the theoretical locations of the scattering centers. The comparison results show good agreement with each other.
We present field experiment results of ocean plume surveys conducted with a robotic platform. In our experiments, Rhodamine dye was used to generate a chemical plume in a coastal environment, and an unmanned surface vessel equipped with fluorometer sensors was deployed to conduct plume surveys. We present plume front and cross sectional survey results, where the robot is driven along visible plume...
The Nuchal translucency (NT), which is the collection of fluid at the back of the fetal neck, is related to chromosomal defects and early cardiac failure in first trimester of pregnancy. In clinic, the thickness of NT is used as an important marker in prenatal screening, and is manually measured by sonographers in the mid-sagittal plane. In this paper, an automatic method based on dynamic programming...
Radiomics can convert digital images to mineable data by extracting a huge number of image features. Because of the high dimensions of radiomics features, feature selection is a very important step which affects the performance of the final prediction or classification. In this paper, we propose a feature selection criterion for radiomics analysis of glioma based on Magnetic Resonance Image (MRI)...
Efficient processing of spectral unmixing is a challenging problem in high-resolution satellite data analysis. The decomposition of a pixel into a linear combination of pure spectra into their corresponding proportions is often very time-consuming. In this paper, a fast unmixing algorithm is proposed based on classifying pixels into a full unmixing group for subset selection requiring intensive computational...
Motor imagery based BCIs are one of the most important BCI paradigms. Although it has been studied for a long time, the EEG features for kinetic information of motor imagery are still less known. In this paper, we explored EEG patterns of hand force motor imagery. Six subjects participated in this study, who were required to imagine clenching their hands with two different levels of force during the...
Understanding human behavior is crucial for planning evacuation strategies when an emergency occurs. The social force model, which is a successful quantitative model, has been widely used in investigating human behavior. In this paper, we propose a gradient descent based parameter optimization method to learn the parameters of the social force model from experimental data. Although the original social...
For advanced interlayer dielectric (ILD) CMP slurry, it is highly desirable to achieve enhanced polishing efficiency and performance with reduced overall cost of ownership (CoO). A colloidal-silica based acidic ILD slurry,† was thus designed for accurate manipulation of the particle/wafer interaction by leveraging the use of proprietary additive. NMR studies were conducted to quantitatively understand...
Existing port hopping technologies are hard to be implemented, as they have much interaction with communication nodes in hopping process. In addition, it is also difficult to achieve strict time synchronization and the synchronization packets of ACK synchronization method are easy to be intercepted. To solve those above problems, a transparent synchronization based port mutation scheme in SDN network...
Word alignment is a basic task in natural language processing and it usually serves as the starting point when building a modern statistical machine translation system. However, the state-of-art parallel algorithm for word alignment is still time-consuming. In this work, we explore a parallel implementation of word alignment algorithm on Graphics Processor Unit (GPU), which has been widely available...
In order to resist DoS attack, taking advantages of SDN network's logically centralized control and network programmable features, a port hopping based DoS mitigation scheme in SDN network is proposed, which moves port hopping function forward to SDN controller and presents a timestamp feedback based hopping synchronization method. This proposed scheme not only can reduce protected server's cost caused...
Obesity is associated with increased risks of various types of cancer, as well as a wide range of other chronic diseases. On the other hand, access to health information activates patient participation, and improve their health outcomes. However, existing online information on obesity and its relationship to cancer is heterogeneous ranging from pre-clinical models and case studies to mere hypothesis-based...
Security threats against routing system have become both increasingly numerous and sophisticated recently. However, so far there is not a taxonomy that could be useful for the routing system security threats. In this paper, a clear-cut and scalable taxonomy faced to routing system security threats was proposed. It consisted of four basic dimensions which provided a holistic classification in order...
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