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The feasibility of using infrared (IR) spectroscopy of the neck muscles in controlling a cursor in a 2-dimensional screen was assessed. The proposed technique utilizes two IR photoplethysmography sensors (λ = 940nm) to monitor the morphological changes of the Scalene and Sternocleidomastoid muscles. Since the reflection of the light has valuable information about the type of contraction, the direction...
Indoor localization techniques proposed to date have assumed costly resources in terms of computation, power, or sensing modality for many wearable end-devices in the Internet of .ings (IoT). To make localization a universal feature for IoT devices, we propose EcoLoc, an indoor localization system using collaborative version of Conditional Random Fields (CCRF) integrated with our encounter model to...
This work present a collaborative indoor localization system which provides a lightweight location estimation solution for resource constrained IoT devices. The proposed EcoLoc, an encounterbased collaborative indoor localization system, uses the chance of encounter to enable the sharing and composition of multiple trajectories which are generated by Pedestrian Dead Reckoning. A collaborative version...
Ge n- and p-FinFETs with different interfacial layer ferroelectric HfZrOx (IL-FE-HZO) gate stacks have been demonstrated systematically by various annealing conditions for the first time. Microwave annealing (MWA) not only shows enhanced FE characteristics but also suppresses the gate leakage and Ge interdiffusion compared with conventional rapid thermal annealing (RTA). While HZO on Al2O3 IL results...
This paper proposes the capturing of IoT data andtheir embedding as metadata in digital snapshots, includingphotos, audios, and videos. Specifically, we focus on IoT devicesbased on Bluetooth Low Energy (BLE) Technology, whichis used for not only data communication but also proximitysensing and is ubiquitous in wearables, smartphones, personaltags, indoor-navigation beacons, and home-automation devices...
Two techniques are proposed to alleviate the computational burden of MUltiple SIgnal Classification (MUSIC) algorithm applied to Electroencephalogram (EEG) source localization. A significant reduction was achieved by parsing the cortex surface into smaller regions and nominating only a few regions for the exhaustive search inherent in the MUSIC algorithm. The nomination procedure involves a dictionary...
Security is important in IoT as any other computing systems. However, standard solutions are necessary but not sufficient due to the added dimensions of their presence in physical space and the possibility for them to interact. This talk presents a new set of challenges on security in IoT systems that compose synergistically. We illustrate the problems and approaches using collaborative indoor localization...
Moving Picture Experts Group-4 part-10 advanced video coding /H.264 standard uses rate-distortion optimization (RDO) as a measure to achieve a more satisfactory trade-off between bitrate and image quality. Adaptive transform coding (ATC) can further provide superior RDO results (RDO costs) to those of fixed transform block-size coding. This paper presents a predictive method to skip 4 × 4 block transform...
With the highest bulk hole mobility among the commonly used semiconductors, Ge is particularly promising as the enabler of high mobility channel for pFETs in future CMOS technology nodes. So far, ion-implanted B is typically used for the formation of S/D extensions or highly doped drains (HDD) in short channel Ge pFETs [1-3]. Although B is found to diffuse extremely slowly in Ge after annealing [4],...
A short range visible light communication system based on the use of RGB-based LEDs which can potentially to perform multi-wavelength transmission was experimentally implemented and is presented in this paper. The performance of an equalized receiver with broadband optical filters capable of receiving multiple optical wavelengths transmitted from RGB-based LEDs was experimentally evaluated under different...
This work investigates the theoretical analysis to enable fast and accurate estimation of dominant frequencies from randomly sampled signals by compressive sensing (CS). We show that dominant frequencies can be discovered using partially computed Discrete Cosine Transform (DCT). We also propose a new system structure with an estimation unit that enables the signal reconstruction to be selectively...
A possible polariton lasing is observed by a vertical-external-cavity surface-emitting laser consisted of a passive Q-switched laser, a semiconductor gain medium with distributed Bragg reflection and external mirror to form a cavity.
Sternocleidomastoid (SCM) is a paired muscle that stretches along both sides of the neck area. It acts as an accessory muscle of inhalation. Abnormal SCM contraction during asthma is usually a sign of further respiratory impairment. Thus, monitoring SCM muscles has great significance in asthma assessment and control. In this work, we develop a wearable monitoring system based on an optical sensor...
SrRuO3 is a very important member of layered Ruddlesden-Popper series of Srn+1RunO3n+1 compounds; where n (= 1, 2, 3 and ∞) indicates number of RuO6 octahedral layers per formula unit. Structural, transport and magnetic properties in Ruddlesden-Popper series vary with different values of ‘n’. For example; Sr2RuO4 (n=1) is a possible p-wave spin-triplet superconductor [1], Sr3Ru2O7 (n=2) is a bilayered...
We proposed to implement a VLC technology for portable FLCOS-based projector application. A FLCOS-based projector using RGB-based LEDs has designed and simulated. A RGB-based LEDs VLC link has investigated and the initial results using a reconfigurable design of a 1st order RC pre-equalizer has demonstrated that the entire system modulation bandwidth can be improved from 35MHz to 79.2MHz. Data transmission...
We have experimentally implemented a short-range visible light communication system based on the use of RGB-based LED which has widely employed as the light source in portable device for micro-projection application. The entire system modulation bandwidth with the use of a designed 1st order RC post-equalizer has improved from 35MHz to 188.5MHz. Data transmission tests using OOK modulation scheme...
In previous papers [2, 3], we studied the problem of making a vehicle brake in a corner with stability, by elaborating suitable independent braking torques for the four wheels. In addition to the previous problem, we are now also interested in using active suspension forces to regulate the vertical dynamics of the vehicle. Then we show how the braking torques and the suspension forces can collaborate...
In this paper, we present a control method based on nonlinear constrained optimization combined with singular perturbation theory, to deal with the problem for a vehicle to brake in a corner with stability. The control laws are elaborated from a simple horizontal model and are shown to be very robust to unmodeled dynamics (such as the vertical dynamics of the car and the suspensions).
We propose a new ECG data compression algorithm based on a learned overcomplete dictionary to exploit the correlation between signals in adjacent heart beats. The learned overcomplete dictionary is constructed by K-SVD dictionary learning algorithm, after preprocessing and normalization of length and magnitude. Using the overcomplete dictionary, the proposed algorithm can find sparse estimation, which...
This paper describes a miniature, wearable wireless hand- gesture recognition (HGR) system called HANDIO. It obtains its input from not only traditional inertial sensors but also a muscle tension sensor (MTS). The addition of MTS enables recognition of a much broader range of intuitive hand gestures, particularly those involving the wrist, that would otherwise be difficult to distinguish by traditional...
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