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This paper presents an integrated wireless multiple sensors System-on-Chip (SoC) for healthcare including 3-lead ECG, bio-impedance (Bio-Z), and body temperature. To allow continuous and real-time monitoring, the SoC has included a multi-channel reconfigurable QPSK/BfSK transmitter (TX) to accommodate different power-constraint conditions. Fabricated in 130nm CMOS technology with a total die area...
This paper describes a novel Ku/Ka band reflectarray antenna for operating at arbitrary polarization. The reflectarray elements consist of two different types of elements: cross-dipole element with fixed-dimension ring for the lower band, and the ring element with round patches for the upper band. Furthermore, the parameters of the element are optimized to suppress the coupling effects. The simulated...
Nanopore sequencing is an emerging new technology for sequencing DNA, which can read long fragments of DNA (∼50,000 bases) unlike most current sequencers which can only read hundreds of bases. While nanopore sequencers can acquire long reads, the high error rates (≈ 30%) pose a technical challenge. In a nanopore sequencer, a DNA is migrated through a nanopore and current variations are measured. The...
In this paper, we proposed an improved true random number generator (TRNG), which comprises a low-bias hardware random number generator (HRNG) and a scrambler based on linear-feedback shift register (LFSR). The HRNG reduces both DC offset from the noise sources and offset voltage from the comparator to generate low-bias bitstream. The LFSR-based scrambler further reduces the bias to zero without sacrificing...
Epilepsy is growingly considered as a brain network disorder. In this study, epileptiform discharges were induced by low-Mg2+ in mouse entorhinal cortex-hippocampal slices, and recorded with a micro-electrode array. Dynamic effective network connectivity was constructed by calculating the time-variant partial directed coherence (tvPDC) of signals. We proposed a novel approach to track the state transitions...
To design high-resolution and high-speed current-steering digital-to-analog converter (DAC), both amplitude and timing mismatches should be minimized. In this paper, a dynamic mapping method based on the combination of magic-square-mapping (MSM) and random-segment-selection (RSS) is proposed to improve the performance of DAC. A design example of 12-bit 500-MS/s current-steering DAC is used to illustrate...
In this work, the design of a dual loop flipped voltage follower (FVF) based low-dropout regulator (LDO) to achieve fast transient response is proposed for all-digital phase locked loop (ADPLL) in the RFID application. With the help of an additional reference generation loop in FVF LDO and the cascaded structure, high power supply rejection ratio (PSRR) is achievable. This design is fabricated in...
A full range current sensor based on self-bias structure for buck regulator is presented in this paper. The proposed full range current sensor can sense current from both the high side and low side switches of the power regulator within the same switching cycle with input current varying from 50 mA to 500 mA. It has higher than 95% sensing accuracy while consuming less than 1% of the total input power...
Tilted fiber Bragg gratings (TFBGs), which eliminate the cross-sensitivity between environmental temperature and fiber deformation, can be designed as highly sensitive biosensors for bio-sample measurements. The miniaturized size together with the capability of remote operation makes the TFBG biosensors work in hard-to-reach places, even possible in vivo. In this work, a Plasmonic biosensor based...
We study two channels with causal CSIT: a finite state channel with input constraints and a finite-battery energy harvesting channel, considered in [1] and for the latter [2]–[5]. The capacity of these channels remains open and the calculation of the upper bounds often has a complexity double exponential in the block size N. In this paper we obtain an alternative upper bound which has a complexity...
Smart home contains centralized controlled lights, Heating, Ventilation and Air Conditioning (HVAC), appliances, security locks of gates and doors and other intelligent equipment, to provide convenient, comfortable, energy efficient and secure services to users. Although many countries and organizations have designed various smart home architectures, there are still some problems in these existing...
We study two types of channels in this paper: certain channels with states and energy harvesting channels. The first is based on Gallager's finite state channel with input constraints and causal CSIT. The second deals with two different scenarios with regard to the availability of energy information at the transmitter. For both channels we derive new capacity bounds, mostly using bounding techniques...
This paper presents the design of a modified StrongArm regenerative comparator in 0.13-μm CMOS technology, operating at a supply voltage of 200-mV. The comparator uses a pair of cross-coupled P-type transistors to replace the conventional cross-coupled inverters, improving the comparison time and voltage headroom. A robust S-R latch is proposed to solve the race condition which occurs when the S-R...
Taxis are an important part of public transportation in nowadays. Taking a vacant taxi has become a difficult problem due to the imbalance between demand and supply of taxi service. People want to know where is better to wait for a vacant taxi in order to save their time in the fast-paced city life. Helpful information could be provided to the passengers by mining the historical GPS traces generated...
Aim: To investigate the clinical therapeutic efficacy of saccharomyces boulardii(Sb) in combination with mesalazine in patients with mild to moderate ulcerative colitis (UC). Methods: Sixty patients aged 18 to 75 years with mild to moderate UC were divided into two groups, the combination group and the mesalazine group. Clinical remission rate (CRR) was calculated with the formula: CRR= number of...
Aim: To investigate incidence of depression and its risk factors in inpatients with gastrointestinal diseases in department of gastroenterology of general hospital. Methods: A hospital cross-sectional study was performed. HAMD and SDS were used to assess the depression scores in 338 inpatients with GI diseases in department of gastroenterology of the First Affiliated Hospital of Dalian Medical University...
Because of the heterogeneity of resources, diversity of ownership, and decentralization of application management, the traditional pyramid-styled name service is no longer suitable for the Internet of Things (IoT). In order to avoid monopolistic control on IoT name service which is caused by a single root node, some researches have been done to create a federated name service. Yet a simple union of...
The rapid development of cloud computing has made traditional data centers energy hungry. Thus it is very important to reduce the amount of calculations on the cloud. In this paper we focus on the energy saving in cloud storage service. First we analyze rsync algorithm widely used in the cloud synchronization service and reveal how this algorithm will lead to high CPU load on cloud. Then we design...
Enterprise information systems store great amount of information, which describes details of the objects in Internet of things. Due to these complex systems lack of uniform interface, users could hardly get the valuable information. We propose the UAI-IOT framework, which provides a method of uniform interfaces to actively acquire information from heterogeneous enterprise systems. To be compatible...
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