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Nomogram model to predict the risk of moderate to severe ovarian hyperstimulation syndrome of long protocol group in fresh cycle
Abnormal heart sound recognition using SVM and LSTM models in real-time mode
Artificial structures can facilitate rapid coral recovery under climate change
Abstract Rising seawater temperatures from climate change have caused coral bleaching, risking coral extinction by century’s end. To save corals, reef restoration must occur alongside other climate-change mitigation. Here we show the effectiveness of habitat creation on artificial structures for rapid coral restoration in response to climate change. We use 29 years of field observations for coral distributions on breakwaters and surrounding reefs (around 33,000 measurements in total). Following bleaching in 1998, breakwaters had higher coral cover (mainly Acropora spp.) than did surrounding natural reefs. Coral recovery times on breakwaters matched the frequency of recent bleaching events (~ every 6 years) and were accelerated by surface processing of the artificial structures with grooves. Corals on breakwaters were more abundant in shallow waters, under high light, and on moderately sloped substrate. Coral abundance on breakwaters was increased by incorporating shallow areas and surface texture. Our results suggest that habitat creation on artificial structures can increase coral community resilience against climate change by increasing coral recovery potential.
Energy efficiency maximization for IRS-assisted UAV short packet communication
Abstract With the development of the sixth generation wireless communication networks, low latency is required to support its applications. In order to meet the low latency requirement, short packet communication is considered to be used, in which a ground sensor transmits the sensing information to a fixed-wing unmanned aerial vehicle (UAV). In this paper, we consider maximizing the energy efficiency of intelligent reflecting surface (IRS)-assisted UAV short packet communication by optimizing the UAV’s speed, trajectory, transmit power and passive beamforming of IRS. Since the maximization problem is nonconvex with respect to the system parameters, this problem is difficult to be solved. Therefore, the successive convex approximation method is employed and a joint iterative optimization algorithm is proposed to solve this problem. In the simulation parts, it is shown that the algorithm proposed in this paper has good convergence performance. And there exists an optimal value of flight speed for the UAV to minimize the energy consumption. In addition, it is found that the application of IRS can improve the energy efficiency effectively.
Surface modification and performance of wool fibers after combined plasma and enzyme treatments
Global burden of malaria before and after the COVID-19 pandemic based on the global burden of disease study 2021
The gender-sex incongruence is partly a mind–body incongruence
Clinical predictors for perioperative anticipated and unanticipated difficult intubation: a matched case-control study
Dual-fiber optical tweezers integrating high-sensitivity structured-light displacement measurement system on fiber end-face
Abstract The dual-fiber optical tweezers have become widespread in trapping, assembling, and sensing due to their simple fabrication process and flexible operation. However, the miniaturization and integration of their displacement measurement optical paths remain challenging. Here, we propose and experimentally demonstrate an integration of structured-light displacement (SLD) measurement method tailored for dual-fiber optical tweezers. A key component split-waveplate is integrated onto the fiber end via coating and etching in the SLD method. The etched fiber and another single mode fiber form optical tweezers, which enables to trap particle and measure its position simultaneously without additional optics. More importantly, it demonstrates a superior signal-to-noise ratio after filtering out the trapping field by the etched fiber. Our results demonstrate a displacement sensitivity reaching the 0.1 pm/Hz 1/2 level, which surpasses the performance of most results using the quadrant photodiode method. Ultimately, we discussed the possibilities of using two etched fibers to detect displacements in different directions, or integrating this method into a single optical fiber. This method has significant potential applications in precision sensing, contributes to the integration of optical tweezers and fosters the development of lab-on-fiber applications.
Multicast reliable traffic engineering technique for SDN-Fog based IoUT
Abstract Underwater Internet of Things (IoUT) networks have gained considerable attention in recent years due to their wide-ranging applications in exploring and monitoring underwater environments, such as oceans and seas. Compared to previous decades, these networks have significantly improved our ability to understand and interact with aquatic ecosystems. However, several challenges remain, including the dynamic and variable conditions of underwater environments, high propagation delays, and the inherent unreliability of underwater communication channels. Ensuring reliable communication between underwater devices and surface nodes continues to be a critical concern. In this paper, we propose a novel solution that integrates Software-Defined Networking (SDN) architecture with Fog Computing to enhance communication reliability in underwater environments. The proposed method is based on an Integer Linear Programming (ILP) model designed to optimize underwater communication. Specifically, the approach considers communication between traffic-generating underwater nodes and surface-level nodes as a multicast operation. By solving this model, an optimized routing tree is generated that minimizes delays while maximizing reliability. The resulting routing structure is then disseminated to the underwater nodes by the network controller. Simulation results confirm that the adoption of an SDN-Fog-based architecture, combined with multicast routing, significantly enhances underwater communication performance, particularly in terms of reliability and network lifetime.