Sliding Mode Control and Adaptive are widely studied in the area of Rotor UAV recent years. Although performance with these controllers show high command tracking ability good robustness, they limited by model accuracy so that cannot take place PID. In this paper, a novel method named State damping control is proposed to be candidate for traditional PID method. Our Damping inspired format air resistance. The based on general idea resistance will make system easy stabilize. independent just...

Abstract The artemisinin (ART), discovered in China, has been widely used against malaria China over the last 30 years. Understanding emergence and origin of ART resistance is therefore great interest. We analyzed 111 culture-adapted isolates P. falciparum from China-Myanmar (CM) border for their susceptibility to dihydroartemisinin using ring stage survival assay (RSA 0−3h ) genotyped K13 genes. Of isolates, 59 had a wild type marker median rate 0.26% (P 95 = 1.005%). Among remaining...

Understanding the emergence and spread of anti-malarial resistance, particularly to artemisinin its partner drugs, is essential for eradicating malaria in worldwide. To identify genetic markers associated with susceptibility common vitro sensitivities drugs were evaluated, a genome-wide association study Plasmodium falciparum multiple was conducted. Genomic DNA from 34 samples P. collected between 2007 2010 Nabang-Lazan Valley along China-Myanmar border extracted subjected whole-genome...

High performance infrared nonlinear optical Na₂MSn₂Se₆ (M = Zn/Cd) was synthesized based on a new atom response theory aided searching approach.

Exploration of a new nonlinear optical (NLO)-active functional motif is important in the rational design promising infrared (IR) NLO materials. Compared with typical tetrahedral MQ4 (M = IIB, III, IV metals; Q S, Se) motifs, MQ3 As, Sb) pyramids favor high second-harmonic generation (SHG) efficiency while frequently hindering phase matching (PM) because excessively large anisotropy. The surfactant–thermal method was first adopted to achieve PM MQ3-containing systems and synthesize mixed...

Data augmentation is an important task of using existing data to expand sets. Using generative countermeasure network technology realize has the advantages high-quality generated samples, simple training, and fewer restrictions on number samples. However, in field transmission line insulator images, freely synthesized samples are prone produce fuzzy backgrounds disordered main features. To solve above problems, this paper uses cycle adversarial (Cycle-GAN) used for domain conversion...

Mutations in the Plasmodium falciparum k13 gene are associated with artemisinin (ART) resistance. However, it is unclear whether F446I mutation, most prevalent allele at China–Myanmar border and north of Myanmar, ART Therefore, aim this study was to investigate role mutation resistance by generating transgenic parasites expressing mutant allele. The carrying or C580Y both 3D7 FCC1/HN isolates were generated single crossing-over recombination verified using PCR sequencing. ring-stage survival...

Unmanned aerial vehicles (UAVs) equipped with high definition (HD) cameras can obtain a large number of detailed inspection images. The insulator is an indispensable component in the transmission lines. Detecting image video quickly and accurately provide reliable basis for ranging obstacle avoidance flight UAV close to tower line. At same time, serious threat safety power grid due multiple faults insulator, computer technology should be fully utilized diagnose fault. Detection images...

Tracking trajectory with high precision under wind perturbations is a difficult problem of quadrotor. In response to this problem, novel perturbation estimator using neural network proposed. The structure designed based on deep understanding quadrotor, and training process optimized solve overfitting in the presence sensor noise. With consideration rotor dynamics, cascaded Lyapunov functions are used derive full backstepping controller. Compared traditional estimator, proposed simple be...

This paper proposes a Deep Residual Network for Single Image Super-Resolution (DRSR). We build deep model using residual units that remove unnecessary modules. can deeper network at the same computing resources with modified units. Experiments shows deepening structure fully utilize image contextual information to improve reconstruction quality. The learns both global residuals and local residuals, making easier train. Our directly extracts features from Low-Resolution (LR) images...

Background A re-emergence of COVID-19 occurred in the northeast China early 2021. Different levels non-pharmaceutical interventions, from mass testing to city-level lockdown, were implemented contain transmission SARS-CoV-2. Our study is aimed evaluate impact multi-level control measures on second-wave SARS-CoV-2 most affected cities China. Methods Five with over 100 reported cases within one month Dec 2020 Feb 2021 included our analysis. We fitted exponential growth model estimate basic...

Dim target detection in infrared image with complex background and low signal-ratio (SCR) is a significant difficult task the tracking system, this paper proposes real time dim algorithm based on fractional differential algorithm. An improved top-hat operator adopted to process original which can restrain well. After we enhance algorithm, further eliminate residual clutter gain saliency map, enhanced spectral method. The pipeline filter reduce false alarm rate at last. tested three different...

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<title>Abstract</title> Aiming at the problem that accuracy of traditional WiFi-based K-Nearest Neighbor algorithm (KNN) indoor positioning cannot meet requirements precise positioning, this paper proposes a K-nearest neighbor based on location range limitation, namely combining echo state network and Gaussian weighted neighbors (ESGWKNN). The ESGWKNN first uses to estimate obtain local spatial information, then GWKNN accurately locate within reduce caused by excessive space. experimental...

Path planning in complex environment is the main foundation of flights automation navigation.Therefore, this paper aims to propose an algorithm combined ant colony optimal with potential field heuristic information.The implement method use information between and goal build elements.What's more, defines as initial pheromone converses elements guide ants find shortest path.Thanks algorithm，the PFACO has a better searching tendency than traditional ACO algorithm，and overcome disadvantage...

For the cryogenic system of large capacity superconducting motors, a rotary joint (RJ) is usually installed to translate fluid coolant from static reservoir cryostat in motor. However, sealing performance and heat generation load are still not solved, essentially. In this paper, based on characteristics wind generator with low revolution speed sufficiently space rotor, novel suitable for 10 MW generators proposed, which RJ can be removed. The design process illustrated detail. characteristic...