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Diabetes is one of the most common critical illnesses around us. There is no effective way to effect a radical cure of diabetes. However, we could control the state of diabetes by insulin injection and other ways. The only thing we have to do is detect the patients' blood glucose frequently. Due to many dangerous and inconvenient issues of invasive blood glucose measurement, many scientists were working...
For the conventional diagonal averaging method, it computes the average of the elements in each shifted diagonal of each two dimensional singular spectrum analysis matrix to obtain each element in each one dimensional singular spectrum analysis vector. However, this conventional diagonal averaging method does not guarantee to obtain the optimal singular spectrum analysis vectors. To address this issue,...
Based on the intra-body communication by galvanic coupling, this paper aimed to explore the impact on the signal transmission in the human body when the muscles were under the stress, and investigated the channel characteristics of different transmission distance and different grip size of the human arm. The results showed that, in the short-distance channel, the stressed muscles hindered the signal...
This paper proposes a method for grouping singular spectrum analysis (SSA) components via the empirical mode decomposition (EMD) approach. To perform the grouping, the total number of the groups of the singular spectrum analysis components is equal to the total number of the intrinsic mode functions (IMFs). The SSA components are assigned to the group where the 2-norm between the IMFs and the grouped...
An implementable blood glucose estimation in computer is presented. In general, the existing effective approaches for measuring the blood glucose concentration are mainly based on blood test, which is painful for patient. Painless methods to obtain blood glucose concentration will dramatically improve the case. As one of the painless methods, this paper implements the blood glucose estimation with...
The paper develops a sequential maximum-likelihood algorithm to estimate a near-field wideband emitter's azimuth-elevation direction-of-arrival plus radial distance, based on data collected by one acoustic vector sensor. This new algorithm needs no prior knowledge of the incident signal's time-frequency signal structure.
This paper proposes a new hardware system to measure the blood glucose concentration. This system has the characteristics of noninvasive, simple and quick. Firstly, we use near-infrared light irradiation fingers. The infrared light transmittance can receive a signal about the blood glucose concentration. Then after an amplifier amplification, this signals will transmit to the Arduino. We use the Arduino...
According to the human physiological sensor communication needs of transmitting information rapidly and gathering data to the information node conveniently, the mobile's feature of communication fast and use easily is used as the gathering node for forwarding data and applying data. The study on the implementation methods of wireless sensor data interface and the open-frame of the software are carried...
The silver/silver chloride (Ag/AgCl) electrode is a widely-used electrode type for signal stimulation and detection in many groups during their Intra-body communication (IBC) investigations. Silver ions may reside in the human body during the IBC process. This may cause argyria and argyrosis due to the accumulation over time. In this article, IBC pseudo-experiments of signal stimulation and detection...
Capacitive micromachined ultrasonic transducer (CMUT) has shown many advantages and is an alternative to lead zirconate titanate (PZT) ultrasonic transducer, especially in biomedical imaging applications. Photoacoustic tomography (PAT) is a developing technique that provides the information of optics and ultrasound. Acceptance angle is a key factor in PAT imaging reconstruction. We evaluated the acceptance...
Capacitive Micromachined Ultrasonic Transducer (CMUT) is a type of micro-electro-mechanical system (MEMS) device which has the advantages such as ease of integration with front-end electronics and fabrication of uniform device arrays. The structure and fundamental working principle of a CMUT are similar to that of a parallel plate capacitor. When working in conventional mode, the deflection profiles...
E-commerce is profoundly changing the economic growth and people's lifestyles, but it also become a zone of fake, shoddy and other violations of intelligent property. In view of this phenomenon, we developed an information analysis system for electronic commodities. The system adopts the web crawler technology to capture the information of the commodities, which is used to form a resource library...
Lateral flow immunoassay (LFIA) is widely utilized in a variety of point-of-care-test (POCT) applications. In this paper, we discuss the development of an ASIC based strip reader controller for LFIA. The control algorithm was proposed and implemented in Verilog HDL and fabricated into ASIC with 0.18 μm CMOS technology. Functional validation on both FPGA and ASIC implementations were presented. The...
This research proposed a method for adaptive Lagrange multiplier determination for rate-distortion optimization with dynamic texture in High Efficiency Video Coding (HEVC). Inspired by the experimental results of the Lagrange multiplier selection test, the presented approach adaptively predicts the optimum Lagrange multiplier for different dynamic texture sequences, based on the features of the dynamic...
Massive MIMO systems have attracted lots of attention, and its performance is closely related to the estimation of direction of arrivals (DOA) of incoming sources. The conventional DOA estimation algorithms like MUSIC and ESPRIT are not suitable for massive MIMO systems, due to the complexity brought by the large number of antennas. The DOA estimation algorithm named Propagator Method (PM) has been...
We proposed an indoor positioning scheme based on visible light communication, which is quite different from RF-based positioning using Wi-Fi, Bluetooth etc. Because of the line-of-sight transmission characteristic of visible light, signal spreading in a relatively definite scope, positioning accuracy is greatly increased. A kind of household LED luminaire is selected as the transmitter, which is...
Since fever is developed in most people infected by communicable diseases, body temperature monitoring is effective for the prevention of outbreak of such diseases. Because of outbreaks of influenza in Hong Kong, some schools are required to measure the students' forehead temperature when they arrive at the school. The repetitive tasks of attendance taking and temperature logging consumes considerable...
In this paper, we investigate the effect of the G.723.1 (6.3kbps) on speaker recognition system. In order to improve the robustness of codec mismatch, we used the Power Normalized Cepstral Coefficients (PNCC) which is a new robustness acoustic feature, to improve the performance of speaker verification system. And a modified SCF speech feature is propose to improve the robustness under codec mismatch...
This paper devotes to build a novel perceptual video quality metric based on features used for semantic task and human material perception for video quality assessment (VQA). Based on the neuroscientific and psychophysical evidence, from preprocessed video information, texton, shape, contour and color can be important mid-level cues for semantic task. And based on Human Material Perception studied,...
Wireless localization with received signal strength (RSS) measurements catches a lot of attention for its simplicity and low cost. How to improve location estimation precision is a critical issue for localization applications with RSS measurements. In this paper, sensor selection method is involved. First, the optimal number of anchors to reach good performance is analyzed. Second, a quadratic program...
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