This paper proposes a variable coefficient combined virtual inertia and primary frequency control strategy for doubly fed induction generators (DFIG) in coordination with diesel generator to participate wind/photovoltaic/diesel microgrid regulation. The response characteristic is analyzed under different wind speeds corresponding parameters different. A 10% power margin preserved through overspeed pitch angle offset the decrease of output after temporary extra surge, provide permanent...

A novel air-to-ground communication paradigm is conceived, where an unmanned aerial vehicle (UAV)-mounted base station (BS) equipped with multiple antennas sends information to ground users (GUs) the aid of a simultaneously transmitting and reflecting reconfigurable intelligent surface (STAR-RIS). In contrast conventional RIS whose main function reflect incident signals, STAR-RIS capable both impinging signals from either side surface, thereby leading full-space 360 degree coverage. However,...

A reconfigurable intelligent surface (RIS) aided air-to-ground uplink non-orthogonal transmission framework is investigated for next generation multiple access. Occupying the same spectrum resource, unmanned aerial vehicle (UAV) users and ground (GUs) are connected to terrestrial cellular networks via access (NOMA) protocol. As flight safety important employing UAVs in civil airspace, collision avoidance mechanism has be considered during flight. Therefore, a joint optimization problem of...

SSP (Sojae Semen Praeparatum, SSP), a traditional medicinal and edible product, undergoes natural fermentation resulting in unique flavor. However, the complexity of system results inconsistent quality. This study utilized E-nose, headspace solid-phase microextraction combined with full two-dimensional gas chromatography-mass spectrometry, high-throughput sequencing techniques to reveal correlation between key volatile flavor compounds dominant microbial communities during fermentation. The...

Sensor-based human activity recognition (HAR) plays a fundamental role in various mobile application scenarios, but the model performance of HAR heavily relies on richness dataset and completeness data annotation. To address shortage comprehensive types collected datasets, we adopt domain adaptation technique with graph neural network-based approach by incorporating an adaptive learning mechanism to enhance action model’s generalization ability, especially when faced limited sample sizes....

SignificanceOptical coherence tomography (OCT) is widely utilized to investigate brain activities and disorders in anesthetized or restrained rodents. However, anesthesia can alter several physiological parameters, leading findings that might not fully represent the true state. To advance understanding of function awake freely moving animals, development wearable OCT probes crucial.AimWe aim address challenge insufficient depth field (DOF) for imaging mice, ensuring high lateral resolution...

The satellite-ground integrated network (SGIN), consisting of satellites and ground base stations, is regarded as the trend to solve problem global coverage. However, highly dynamic scenarios pose great challenges users' mobility management, especially handover decisions. With rapid development machine learning, reinforcement learning (RL), such Q-learning deep Q-network (DQN), has been applied decision making owing being good at solving multi-attribute optimization problems. can be a waste...

This paper studies the application of non-orthogonal multiple access (NOMA) to cache-enabled cloud radio network (CRAN) with mixed multicast and unicast transmission. Users requesting same content are grouped together served a cluster remote heads (RRHs) using distributed beamforming. In addition, user better channel condition in each group is allowed request an extra via NOMA protocol. Each RRH has local cache which enables it acquire requested contents either from or central processor...

Satellite communication is an indispensable part of future wireless communications given its global coverage and long-distance propagation. In satellite systems, channel acquisition energy consumption are two critical issues. To this end, we investigate the tradeoff between total efficiency (TEE) minimum EE (MEE) for robust multigroup multicast systems in paper. Specifically, under power constraint, beamforming aimed at balancing TEE-MEE, so as to achieve balance fairness performance on...

Motivated by the need for increased spectral efficiency and proliferation of intelligent applications, sixth-generation (6G) mobile network is anticipated to integrate dual-functions communication sensing (C&S). Although millimeter wave (mmWave) mmWave radar share similar multiple-input multiple-output (MIMO) architecture integration, full potential dual-function synergy remains be exploited. In this paper, we commence overviewing state-of-the-art schemes from aspects waveform design signal...

To evaluate the effect of subgingival delivery progranulin (PGRN)/gelatin methacryloyl (GelMA) complex as an adjunct to scaling and root planing (SRP) on experimental periodontitis dog model with Class II furcation involvement (FI).

In recent years, the number of small size wind farm made up with doubly fed induction generators (DFIG) located within distribution system is rapidly increasing. DFIG can be utilized as continuous reactive power source to support voltage control by taking advantage their capability. this paper, output has been considered variables in optimization algorithm considering compensation capability DFIG. The minimization total real loss and deviation are an objective particle swarm (PSO) used...

Wireless sensor networks are characterized by centralized data gathering, multi-hop communication and many-to-one traffic pattern. These three characteristics may give rise to funneling effects that can lead severe packet collision, network congestion, loss even congestion collapse. This also result in hotspots of energy consumption cause premature death nodes entire network. In this paper, exploiting spatial correlation form clusters sensing similar values, only cluster head reading is...

In recent years, the number of small size wind farms used as DG sources located within distribution system are rapidly increasing. this paper, farm made up with doubly fed induction generators (DFIG) is proposed continuous reactive power source to support voltage control due capability DFIG. The particle swarm optimization (PSO) utilized find optimal output for losses reduction and profiles improvement. Finally, three feeder a test case evaluate algorithm.

Optical coherence tomography (OCT) is an emerging optical imaging technology that holds great potential in medical and biological applications. Apart from its conventional ophthalmic uses, it has found extensive applications studying various brain activities disorders anesthetized/restricted rodents, with a particular focus on visualizing blood vessel morphology function. However, developing compact wearable OCT probe for the activity/disorders freely moving rodents challenging due to...

Broad bean paste (BBP) is a traditional fermented soy food, and its high salt content not only prolongs the fermentation time but also threatens human health. In this study, three BBP-meju with different concentrations were prepared, effects of varying salinity on process comprehensively compared. The results showed that salt-reduced contributed to accumulation amino acid nitrogen, reducing sugars, free acids, organic acids. Alcohols, esters, aldehydes, acids main volatile flavor compounds...