In this paper, hexagonal structure phase-pure wide-band gap ε-Ga2O3 films were grown by metal organic chemical vapor deposition on 6H-SiC substrates. The with good crystal quality verified high-resolution X-ray diffraction. out-of-plane epitaxial relationship between and substrates is confirmed to be (0001)//6H-SiC (0001), the in-plane also ⟨112¯0⟩//6H-SiC ⟨112¯0⟩. SEM AFM images show that are uniform flat. thermally stable up approximately 800 °C begin transform into β-phase Ga2O3 at 850...

Pure ε- and β-phase gallium oxide (Ga2O3) films have been successfully grown on Al2O3 (001) substrate via metal–organic chemical vapor deposition (MOCVD) at a growth temperature of 500 °C. Growth pressure controlled nucleation is the dominant controlling parameter for pure phase Ga2O3 film growth. Due to biaxial stress induced by lattice mismatch, heteroepitaxial ε-phase heterogeneous low pressure. However, dominated spherical nuclei homogeneous higher than 100 mbar, with mosaic surface. The...

A Schottky barrier diode (SBD) solar-blind photodetector was fabricated based on the single crystal β-Ga2O3. Cu and Ti/Au were deposited top bottom surface of Ga2O3 as ohmic contacts, respectively. The SBD exhibits a higher rectification ratio up to 5 × 107 at ±2 V. photoresponse spectra show maximum responsivity 241 nm cutoff wavelength 256 nm. solar-blind/ultraviolet solar-blind/visible rejection can reach high level 200 1000, It is interesting that device has clear response zero bias,...

The presence of tourists and the absence scientific evidence exacerbate silence alarming destructions at China's minority tourist attractions. yearly arrival to resident ratio reaches 26.5 attractions—the Miao-Dong Autonomous Prefecture in China, which is higher than 16.3 Venice, Italy. Overtourism motivates us develop a low-carbon transition evaluation system three Dong culture Based on Driver-Pressure-State-Impact-Response framework (DPSIR), we then, evaluate transitions attractions 2010,...

<title>Abstract</title> Building-attached photovoltaic (BAPV) systems integrate (PV) technology with buildings, attracting increasing attention as a promising solution to advancing eco-friendly objectives. In BAPV systems, wireless power transfer (WPT) offers unique advantages; however, existing research faces challenges in effectively balancing cost, efficiency, and flexibility. This paper presents distributed WPT system based on secondary-side-direct-series (SSDS) topology. The proposed...

The geometric controller is widely used to solve the path tracking problem in autonomous vehicle. However, its performance dependent on look-ahead distance that difficult be decided real driving. Besides, relationship isn't enough express impacts of error some extreme driving situations. In this paper, we use Pure Pursuit as basic controller, and add PI (Proportional Integral) improve above controller's problems. We name our PP_PI. Moreover, reduce sudden change steering angle stability,...

Long-term wellbeing monitoring is an underlying theme in many local and national policies procedures outlined by governments health care services. Natural, efficacious, trustworthy using wearable sensors necessary for researchers to find establish the interrelationships of affective computing, body sensor networks (BSNs), social signal processing, physical mental health. Specially, Giancarlo Fortino has outstanding contribution applying BSNs on monitoring. This paper investigated how...

To deploy deep neural networks on resource-limited devices, quantization has been widely explored. In this work, we study the extremely low-bit which have tremendous speed-up, memory saving with quantized activation and weights. We first bring up three omitted issues in networks: squashing range of values; gradient vanishing during backpropagation unexploited hardware acceleration ternary networks. By reparameterizing weights vector full precision scale offset for fixed vector, decouple...

Developing wearable activity and speech sensing for assessing human physical mental health is just as significant conscious content determining social behavior. Multiple relevant sensors, such microphones accelerometer, embedded in devices paves the way to provide opportunity continuously non-invasively monitor anxiety stress real-life situation. In this paper, we present design, implementation, deployment of a computing platform capable automatically extracting analyzing signals....

To overcome the shortcoming wherein accuracy of subsea cable detection can be affected by determination bias vector, scale factors, and non-orthogonality corrections vector magnetometer, a real-time attitude-independent route tracking method for power cables is investigated theoretically experimentally means scalar magnetic field checking. The measurement Bc produced current in made immune to influence platform attitude extracting component along geomagnetic using high-bandwidth...

Talkative power conversion (TPC) is a promising communication solution for the DC distributed system (DPS). It involves embedding data into output ripple of converter by using and signal dual modulation (PSDM) method. This paper proposes frequency shift keying (FSK)-based method active rectified LLC resonant converters (ARLLC). The integrates function modulating switching carrier. phase control secondary devices employed to suppress input-output voltage gain fluctuations caused modulation,...

Urban driving requires the autonomous vehicles to drive with smooth control and track planned path accurately. However, most of existing path-tracking controllers pay more attention tracking errors than smoothness because difficulties balance them. This paper proposes a learning-based method achieve trade-off between tracking-error control. An Reinforcement Learning algorithm, which is called Proximal Policy Optimization, used train neural model tune weights designed controller PP_PID...

The "butterfly-shaped" bicyclic pyrrolidinol ((2R,7aS)-2-fluorotetrahydro-1H-pyrrolizin-7a(5H)-yl)-methanol (1) is a key building block for drug candidates, and its practical chemical synthesis remains elusive. As such, an asymmetric that amenable scale-up has been developed. newly optimized process utilizes readily available N-Boc-trans-4-hydroxy-l-proline methyl ester (8) to establish the challenging stereogenic center bearing fluoride. Subsequent diastereoselective α-alkylation was...

With an increase of stress in work and study environments, mental health issue has become a major subject current social interaction research. Generally, researchers analyze psychological states by using the perception behavior. Speech signal processing is important research direction, as it can objectively assess person from sensing through extraction analysis speech features. In this paper, series four-week long-term monitoring experiment proposed wearable device been conducted. A set...

Compound heat–precipitation events exert significant impacts on severe weather occurrences. Intense vertical air movement, driving vigorous convection, primarily contributes to the formation of extreme precipitation. Nevertheless, such compound events’ temporal and spatial variation patterns at convection-permitting resolutions remain inadequately explored. This study assesses performance Convection-Permitting Model (CPM) against a model convection parameterization while investigating...