Loneliness is a public health concern with serious consequences in older adults. Despite large body of research on the correlates loneliness, little known about age group differences correlates. Given that adult population heterogeneous, this study aims to examine loneliness adults Shanghai, and explore how vary across different groups. We used Shanghai Urban Neighborhood Survey (SUNS) which was conducted 2016 2017. The total sample size included analysis 2770. measured using sum 6 items...

This study seeks to improve the performance of a low-temperature differential free-piston Stirling air conditioner (FPSAC). To achieve this, novel approach is proposed, which replaces conventional simple harmonic drive with multi-harmonic drive. modification aims optimize motion driving piston, bringing it closer ideal movement pattern. The research involves both thermodynamic and dynamic coupling simulations FPSAC, complemented by experimental verification its key parameters. A model for...

Amphion is an open-source toolkit for Audio, Music, and Speech Generation, designed to lower the entry barrier junior researchers engineers in these fields. It provides a versatile framework that supports variety of generation tasks models. In this report, we introduce v0.2, second major release developed 2024. This features 100K-hour multilingual dataset, robust data preparation pipeline, novel models such as text-to-speech, audio coding, voice conversion. Furthermore, report includes...

A high-gain, low-offset, and low-power auto-zero operational amplifier with rail-to-rail input/output is proposed. Based on a time-interleaved charge pump high-voltage on-chip internal power supply, the PMOS differential pair input configuration will achieve range constant transconductance. Time-interleaved continuously eliminates offset voltage of in time domain. An nA-level bias circuit to realize low power. The based 65 nm CMOS process. Under 1.2V supply temperature 27 °C, 3.16 μV current...

Graphene, serving as electrodes, is widely applied in electronic and optoelectronic devices. Work function one of the fundamental intrinsic characteristics graphene directly affects interfacial properties thereby affecting performance Much work has been done to regulate expand its application fields, doping demonstrated an effective method. However, numerous types doped make investigation time-consuming labor-intensive. In order quickly obtain relationship between structure property, a deep...

This paper reports a precise design and development for ecg signal generator testing calibration of the electrocardiogram equipment, processing system heart teaching tool. It can create guide II time profile features lead across range drawings rate within 45 to 185 devices in first device steps. be set up 15 ∼ QRS years old lady with who resolution. P, T wave amplitude adjusted from 1-100% 1% total complex A color LCD touch screen is able provide user input parameters facilities, depending...

An improved single event upset (SEU) tolerant static random access memory (SRAM) bit-cell with differential read and write capability is proposed. SPICE simulation suggests a more than 1000 times improvement of the critical charge over standard 6T SRAM cell. With SEU robustness greatly enhanced at low area electrical performance costs, proposed cell well suited to harsh radiation environment applications such as aerospace high energy physics.

Abstract Density functional theory (DFT) calculations have been made to investigate the adsorption and sensing properties of harmful nitrogen oxides (NO, NO 2 ) on rhodium (Rh) doped hexagonal boron nitride (BN) explore feasibility constructing Rh‐doped BN (Rh‐BN) based gas sensors. For each molecule, various positions orientations were examined. The illustrate that most stable structure is Rh atom located directly above N atom, a chemical bond with length 2.096 Å formed between significant...

A 10-bit 1.2 GS/s power efficient time-interleaved successive-approximation-register (SAR) analog-to-digital converter (ADC) is present in this paper. Substrate bias effect depression and output resistance stabilization techniques are provided to enhance the linearity of input buffer. Further, meta-stability restrained trigger comparator used ENOB (effective number bits) SAR ADC. Additionally, a digital background calibration technique proposed suppress inter-channel gain, offset timing skew...

A new type of sleep disorder treatment system based on transcranial microcurrent stimulation has been developed, Which consumes less power. Main technical indexes: the frequency 0.5 Hz, 1.5Hz and 100Hz which can be adjusted by two-phase constant current stimulation, 0–1mA continuously, pulse width 50∼1000ms continuously. The effectiveness using to treat confirmed in clinical application. This kind avoid side effects caused drug insomnia, statistical result shows that effective rate this for...

A high-speed data collection and transfer system is designed in this paper. The hardware based on EZ-USB FX2 high speed A/D sampling model MAX1198. frame of discussed details. Finally, the solution software firmware flow are provided. has many advantages such as high-speed, plug play, easiness to use expand. It can be used for reference universal research real-time system.

An optocoupler chip is proposed in this paper based on BiCMOS process. NPN transistors are utilized as input for transimpedance amplifier (TIA) and comparator to achieve low noise offset. Darlington composite transistor NMOS a class AB output driver circuit. The simulation results show that the can work supply voltage range of 15$\sim$30V, peak current reach 2.85A. Meanwhile, with 10$\Omega$ resistor 10nF capacitor series at output, measured rise time t<inf>r</inf> signal 60ns, fall...

In this paper, a new s-type of aerostatic bearing is presented.The structure can increase the stiffness by using variable-section pressure equalizing groove elastic membrane.Then, journal with membrane was proposed. According to knowledge computational fluid dynamics and Shell theory, establishing gas lubrication governing equation deformation bearing. Simultaneously, solving equations through use finite difference method combination over-relaxation iterative. The carrying capacity were...

An important task of brain–computer interface (BCI) research is to read or decode mental content from a large number electroencephalographic (EEG) signals, which an exciting, attractive, and challenging goal. In this paper, resting EEG data are collected spontaneous EEG, 16 random features such as correlation coefficient, covariance, brainpower spectrum extracted reference vectors. the subsequent emotion recognition experiment, same feature information separated signal, translation...

Study the design approach of a micro electric current stimulator, realize to aid in treatment insomnia. According system analysis patients with sleep, automatic regulation stimulation parameters Settings. This way without side effects caused by drug insomnia.System uses low power technology, suitable for battery long time work. Main technical indexes: through bi-phase constant stimulation; stimulus current: 0 ~ 1mA; exciting frequency: 0.1 100 Hz; stimulating pulse width: 50 1000 ms.

For the large air bearing capacity and high rigidity, author put forward a kind of slit type guide rail which based on gas film clearance throttle,through establishing physical model,fitting surface ,and building flotation control equation, refering to finite difference method dichotomy,solved pressure distribution Matlab numerical calculation,analysed floating needle bar under different eccentricity stiffness.The results show that: guide,if slit’s width is 0.2 0.26,and cumulative length for...