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Source: NLM General Announcements - Category: Databases & Libraries Source Type: news

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Sinusoidal frequency-modulated (SFM) signal is widely applied in radar, and wireless communication. Therefore, there is significant importance in studying the estimation of SFM signal parameters. However, traditional estimation algorithms have high computational complexity while the corresponding estimation performance degrades when either modulation index or modulation frequency of SFM signals increases. To address these problems of computational complexity as well as the performance degradation, a two-branch two-stage estimation algorithm is proposed in this paper. In the first stage, received signals are passed through ...
Source: IEEE Transactions on Signal Processing - Category: Biomedical Engineering Source Type: research
For extended object tracking, the random matrix approach is a computationally efficient framework that is capable of estimating the kinematic state, and extension of the object jointly, and thus is gaining momentum in recent years. Existing random matrix approaches have an underlying assumption that scatter centers are symmetrically distributed around the centroid. In many real scenarios, however, they are often distributed on particular portions of the object since these parts reflect more radar energy, and measurement distributions over an object are skewed. To effectively describe such a phenomenon, this paper proposes ...
Source: IEEE Transactions on Signal Processing - Category: Biomedical Engineering Source Type: research
Low-rank matrix/tensor factorizations play a significant role in science and engineering. An important example is the canonical polyadic decomposition (CPD). There is also a growing interest in multi-set extensions of low-rank matrix/tensor factorizations in which the associated factor matrices are partially shared. In this paper we propose a more unified framework for multi-set matrix/tensor factorizations. In particular, we propose a multi-set extension of bilinear factorizations subject to monomial equality constraints to the case of shared and unshared factors. The presented framework encompasses (generalized) canonica...
Source: IEEE Transactions on Signal Processing - Category: Biomedical Engineering Source Type: research
Due to the broad range of applications of stochastic multi-armed bandit model, understanding the effects of adversarial attacks and designing bandit algorithms robust to attacks are essential for the safe applications of this model. In this paper, we introduce a new class of attacks named action-manipulation attacks. In this class of attacks, an adversary can change the action signal selected by the user. We show that without knowledge of mean rewards of arms, our proposed attack can manipulate Upper Confidence Bound (UCB) algorithm, a widely used bandit algorithm, into pulling a target arm very frequently by spending only...
Source: IEEE Transactions on Signal Processing - Category: Biomedical Engineering Source Type: research
Conducting surveillance of the geocenric orbits is a key task towards achieving space situational awareness (SSA). Our work focuses on the optical detection of man-made objects (e.g., satellites, space debris) in Geostationary orbit (GEO), which is home to major space assets such as telecommunications and Earth observing satellites. GEO object detection is challenging due to the distance of the targets, which appear as small dim point-like objects among a background of streak-like objects. In this paper, we propose a novel multi-target detection technique based on topological sweep, to find GEO objects from a short sequenc...
Source: IEEE Transactions on Signal Processing - Category: Biomedical Engineering Source Type: research
This paper addresses the adaptive detection of subspace signals in the noise whose covariance matrix is unknown. The partially homogeneous scenario, where the primary data have the same noise covariance matrix with the training data up to an unknown scaling factor is considered. We exploit the persymmetric structure of the noise covariance matrix to enhance the matched detection performance in the case of limited number of training data. Three persymmetric subspace detectors are proposed by applying the generalized likelihood ratio (GLR), Rao and Wald design criteria, respectively. It is proved that the three persymmetric ...
Source: IEEE Transactions on Signal Processing - Category: Biomedical Engineering Source Type: research
Conclusion: The integrated robotic system can place NBTU ablator at a desired target location in porcine brain and monitor the ablation in realtime via magnetic resonance thermal imaging (MRTI). Significance: Further optimization of this system could result in a clinically viable syste- for use in human trials for various diagnostic or therapeutic neurosurgical interventions.
Source: IEEE Transactions on Biomedical Engineering - Category: Biomedical Engineering Source Type: research
CONCLUSIONS: The number of people with dementia and their family caregivers is large and growing every day with the aging of the population. Living well with dementia is the goal. Current care systems are inadequate and lead to multiple poor outcomes. Innovative solutions like the DICE Approach with delivery methods including a manual and interactive training can put the key components of good dementia care at the fingertips of the people who need it most. PMID: 32950366 [PubMed - as supplied by publisher]
Source: The American Journal of Geriatric Psychiatry - Category: Psychiatry Tags: Am J Geriatr Psychiatry Source Type: research
Insight into Potential Mechanisms Linking Loneliness and Cognitive Decline: Commentary on "Health Factors as Potential Mediator the Longitudinal Effect of Loneliness on General Cognitive Ability". Am J Geriatr Psychiatry. 2020 Aug 28;: Authors: Kidambi N, Lee EE PMID: 32950365 [PubMed - as supplied by publisher]
Source: The American Journal of Geriatric Psychiatry - Category: Psychiatry Tags: Am J Geriatr Psychiatry Source Type: research
Authors: Kolanowski A PMID: 32950364 [PubMed - as supplied by publisher]
Source: The American Journal of Geriatric Psychiatry - Category: Psychiatry Tags: Am J Geriatr Psychiatry Source Type: research
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