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Refractive Index and Temperature Sensing with Sagnac-Mach Zehnder Hybrid Fiber Interferometer

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Refractive Index and Temperature Sensing with Sagnac-Mach Ze...

Sensing in the presence of strong noise by deep learning of dynamic multimode fiber interference

第32届中国控制与决策会议

作者： Xuegang Li linh v.nguyen Heike Ebendorff-Heidepriem Yanan Zhang Stephen C.Warren-Smith College of Information Science and Engineering Northeastern University Institute for Photonics and Advanced Sensing(IPAS) and School of Physical Sciences The University of Adelaide

A high-sensitivity,large dynamic range refractive index and temperature sensor based on a hybrid fiber interferometer is proposed and *** exposed-core fiber is highly birefringent due to its asymmetric structure and also supports multimode propagation,thus can be used simultaneously as a Mach-Zehnder and Sagnac *** sensor can be used for resolving the problem of trade-off between high sensitivity and large dynamic *** addition,the sensor can potentially be used for achieving simultaneous measurement of temperature and refractive index due to their different sensitivities to these parameters.

关键词： Hybrid Fiber Interferometer Optical fiber sensing Refractive index Temperature

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Photonics Research 2021年第4期9卷 I0029-I0038页

作者： linh v.nguyen Cuong C.nguyen Gustavo Carneiro Heike Ebendorff-Heidepriem Stephen C.Warren-Smith Institute for Photonics and Advanced Sensing and School of Physical Sciences The University of AdelaideAdelaideSA 5005Australia Australian Institute for Machine Learning The University of AdelaideAdelaideSA 5005Australia Australian Research Council Centre of Excellence for Nanoscale BioPhotonics The University of AdelaideSA 5005Australia Future Industries Institute University of South AustraliaMawson LakesSA 5095Australia

A new approach to optical fiber sensing is proposed and demonstrated that allows for specific measurement even in the presence of strong noise from undesired environmental perturbations.A deep neural network model is trained to statistically learn the relation of the complex optical interference output from a multimode optical fiber(MMF)with respect to a measurand of interest while discriminating the *** technique negates the need to carefully shield against,or compensate for,undesired perturbations,as is often the case for traditional optical fiber *** is achieved entirely in software without any fiber postprocessing fabrication steps or specific packaging required,such as fiber Bragg gratings or specialized *** technique is highly generalizable,whereby the model can be trained to identify any measurand of interest within any noisy environment provided the measurand affects the optical path length of the MMF’s guided *** demonstrate the approach using a sapphire crystal optical fiber for temperature sensing under strong noise induced by mechanical vibrations,showing the power of the technique not only to extract sensing information buried in strong noise but to also enable sensing using traditionally challenging exotic materials.

关键词： fiber sapphire noise

Prevalence and risk factors associated with long COvID symptoms in children and adolescents in a southern province of vietnam

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Asian Pacific Journal of Tropical Medicine 2024年第3期17卷 119-128,I0001,I0002页

作者： Huynh Ngoc linh nguyen The Tan Le Thi Minh Thu nguyen Tu Loan nguyen Thi To Uyen Le Thanh Thao Trang Truong Thanh Nam Doan Hoang Phu Faculty of Medicine Ca Mau Medical CollegeCa Mau 98000Vietnam Ca Mau Obstetrics and Pediatrics Hospital Ca Mau 98000Vietnam Faculty of Basic Science and Public Health Dong Thap Medical CollegeDong Thap 81000Vietnam Graduate University of Sciences and Technology Vietnam Academy of Science and TechnologyHa Noi 10000Vietnam Community Public Health Research Program School of Public HealthWalailak UniversityNakhon Si Thammarat 80160Thailand Faculty Public Health Can Tho University of Medicine and PharmacyCan Tho City 94000Vietnam Doctoral Program in Health Sciences College of Graduate StudiesWalailak UniversityNakhon Si Thammarat 80160Thailand

Objective:To investigate the prevalence and risk factors associated with long COvID symptoms among children and adolescents who have recovered from ***:This study applied a cross-sectional approach within community settings in a southern province of vietnam.A structured questionnaire featuring socio-demographic information and common long COvID symptoms was *** correlation coefficients assessed associations among pairs of long COvID ***,multivariable logistic regression models were performed to investigate the risk factors of long COvID in recovered COvID-19 children and ***:Among 422 participants,39.3%reported long COvID symptoms,with a prevalence of 45.2%(SD=0.5)in children and 22.2%(SD=0.4)in *** symptoms reported were cough 34.6%(SD=0.5),fatigue 20.6%(SD=0.4),shortness of breath 10.9%(SD=0.3),and lack of appetite 6.6%(SD=0.3).Concerning risk factors of long COvID,a higher risk was observed among demographic groups,including girls(OR 1.25,95%CI 1.15-1.37;Pverweight individuals(OR 1.14,95%CI 1.02-1.27;P=0.018,reference:healthy weight),and participants without any COvID-19 vaccination(OR 1.36,95%CI 1.20-1.54;Pve received only one single dose(OR 1.35,95%CI 1.10-1.64;P=0.004)compared to those who have received two ***,patients with a COvID-19 treatment duration exceeding two weeks also had a higher risk of long COvID(OR 1.32,95%CI 1.09-1.60;P=0.003)than those who recovered less than seven ***:The insights from this study provide crucial guidance for predicting the factors associated with the occurrence of long COvID in pediatric patients,contributing to strategic interventions aimed at mitigating the long COvID risks among children and adolescents in vietnam.

关键词： Long COvID Prevalence Risk factors Children Adolescent vietnam

Honey vesicle-like nanoparticles protect aged liver from non-alcoholic steatohepatitis

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Acta Pharmaceutica Sinica B 2024年第8期14卷 3661-3679页

作者： Baolong Liu Phuong linh nguyen Han Yu Xingzhi Li Huiren Wang Tram Gia Bao nguyen Prakash Kumar Sahoo Meghna Sur Jay Reddy Sarah Sillman Stephen D.Kachman Bara Altartouri Guoqing Lu Sathish Kumar Natarajan Mahesh Pattabiraman Jiujiu Yu Department of Nutrition and Health Sciences University of Nebraska-LincolnLincolnNE 68583USA Shaanxi Key Laboratory of Molecular Biology for Agriculture College of Animal Science and TechnologyNorthwest A&F UniversityYangling 712100China Department of Nutrition Case Western Reserve UniversityClevelandOH 44106USA School of veterinary Medicine and Biomedical Sciences University of Nebraska-LincolnLincolnNE 68583USA Department of Statistics University of Nebraska-LincolnLincolnNE 68583USA Center for Biotechnology University of Nebraska-LincolnLincolnNE 68588USA Department of Biology University of Nebraska OmahaOmahaNE 68182USA Department of Chemistry University of Nebraska-KearneyKearneyNE 68849USA

Non-alcoholic steatohepatitis(NASH),an advanced form of non-alcoholic fatty liver disease(NAFLD),has emerged as the leading cause of liver failure and related ***,no medication is specifically approved to treat NAFLD or *** we report that oral administration of honey vesiclelike nanoparticles(H-vLNs)to naturally aged mice protects the liver from NASH development.H-vLNs are dominantly taken up by Kupffer cells in the liver and suppress hepatic chronic inflammation and further development of fibrosis and nodule formation in aged *** their reported antiinflammasome function,H-vLNs are found to inhibit the transcriptional activities of C-JUN and nuclear factor-kappa B(NF-κB).MicroRNAs miR5119 and miR5108 and phenolic compound luteolin in H-vLNs are identified in suppressing both the C-JUN and NF-kB ***,oral intake of H-vLNs represents a promising new user-friendly modality to prevent the development of NASH.

关键词： Honey Extracellular vesicles Exosomes Nanoparticles microRNAs Aging Inflammation Non-alcoholic steatohepatitis

Shear strength model of the reinforced concrete beams with embedded through-section strengthening bars

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Frontiers of Structural and Civil Engineering 2022年第7期16卷 843-857页

作者： linh van Hong BUI Phuoc Trong nguyen Faculty of Civil Engineering Ho Chi Minh City Open UniversityHo Chi Minh City 700000Vietnam

In this study,finite element(FE)analysis is utilized to investigate the shear capacity of reinforced concrete(RC)beams strengthened with embedded through-section(ETS)*** of critical variables on the beam shear strength,including the compressive strength of concrete,stiffness ratio between ETS bars and steel stirrups,and use of ETS strengthening system alone,are parametrically investigated.A promising method based on the bond mechanism between ETS strengthening and concrete is then proposed for predicting the shear resistance forces of the strengthened *** expression for the maximum bond stress of the ETS bars to concrete is *** new expression eliminates the difficulty in the search and selection of appropriate bond parameters from adhesion *** results obtained from the FE models and analytical models are validated by comparison with those measured from the ***,the model proposed in this study demonstrates better performance and more accuracy for prediction of the beam shear-carrying capacity than those of existing *** results obtained from this study can also serve researchers and engineers in selection of the proper shear strength models for design of ETS-strengthened RC beams.

关键词： embedded through-section strengthening fiber-reinforced polymer finite element shear strength model bond mechanism

Discrete-time sliding mode control with power rate exponential reaching law of a pneumatic artificial muscle system

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Control Theory and Technology 2022年第4期20卷 514-524页

作者： Quy-Thinh Dao Trung-Kien Le Tri van-Anh nguyen Manh-linh nguyen School of Electrical and Electronic Engineering Hanoi University of Science and TechnologyDai Co VietHanoi 11615Vietnam

This paper develops a discrete-time sliding mode controller with a power rate exponential reaching law approach to enhance the performance of a pneumatic artificial muscle system in both reaching time and chattering *** proposed method dynamically adapts to the variation of the switching function,which is based on an exponential term and a power rate term of the sliding ***,the controlled system can achieve high tracking performance while still obtain chattering-free ***,the effectiveness of the proposed method is validated through multiple experimental tests,focused on a dual pneumatic artificial muscle ***,experimental results show the effectiveness of the proposed approach in this paper.

关键词： Pneumatic artificial muscle Discrete-time sliding mode control Exponential reaching law Chattering

Uncertainty analysis of hydrological modeling in a tropicalarea using different algorithms

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Frontiers of Earth Science 2018年第4期12卷 661-671页

作者： Ammar RAFIEI EMAM Martin KAPPAS Steven FASSNACHT nguyen Hoang Khanh linh Department of Cartography GIS and Remote SensingUniversity of Goettingen37077GoettingenGermany Colorado State University Fort CollinsCO 80523-1476USA Faculty of Land Resources and Agricultural Environment (FLRAE) Flue University of Agriculture and Forestry (F1UAF)Hue UniversityHue City 0084Vietnam

Hydrological modeling outputs are subject to uncertainty resulting from different sources of errors (e.g., error in input data, model structure, and model parameters), making quantification of uncertainty in hydrological modeling imperative and meant to improve reliability of modeling results. The uncertainty analysis must solve difficulties in calibration of hydrological models, which further increase in areas with data scarcity. The purpose of this study is to apply four uncertainty analysis algorithms to a semi-distributed hydrological model, quantifying different source of uncertainties (especially parameter uncertainty) and evaluate their performance. In this study, the Soil and Water Assessment Tools (SWAT) eco-hydrological model was implemented for the watershed in the center of vietnam. The sensitivity of parameters was analyzed, and the model was calibrated. The uncertainty analysis for the hydrological model was conducted based on four algorithms: Generalized Likelihood Uncertainty Estimation (GLUE), Sequential Uncertainty Fitting (SUFI), Parameter Solution method (ParaSol) and Particle Swarm Optimization (PSO). The performance of the algorithms was compared using P-factor and Rfactor, coefficient of determination (R2), the Nash Sutcliffe coefficient of efficiency (NSE) and Percent Bias (PBIAS). The results showed the high performance of SUFI and PSO with P-factor>0.83, R-factor 0.91, NSE>0.89, and 0.18<0.32. Hence, we would suggest to use SUFI-2 initially to set the parameter ranges, and further use PSO for final analysis. Indeed, the uncertainty analysis must be accounted when the outcomes of the model use for policy or management decisions.

关键词： SWAT-CUP GLUE SUFI2 ParaSol PSO vietnam

Effectiveness of bee venom acupuncture for patients suffering from periarthritis humeroscapularis

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中医杂志:英文版 2023年第4期43卷 795-800页

作者： Minh Duc nguyen Thanh van Tran Quoc vinh nguyen Cay Doan Ha linh vu Phuong Dang Senior Specialist Clinic National Hospital of AcupunctureHanoi 1000Vietnam Department of Senior Specialist National Hospital of Acupuncture Hanoi 1000Vietnam Department of Senior Specialist Military Institute of Traditional MedicineHanoi 1000Vietnam Department of minimally invasive spine National Hospital of AcupunctureHanoi 1000Vietnam Department of Medicine Dai Nam UniversityHanoi 1000Vietnam

OBJECTIvE:To evaluate the efficacy of bee venom acupuncture in humeroscapularis(PHS)***:One hundred and twenty patients diagnosed with PHS were assigned into four groups:Bv1(0.01 mg/kg),Bv2(0.005 mg/kg),Bv3(0.0025 mg/kg),and control group(vitamin B1 plus novocain 3%injection)with 15 d of *** outcomes of the study including visual analogue scale(vAS)score andβ-endorphin,inflammatory cytokines including interleukin-10(IL-10),IL-1βand tumor necrosis factorα(TNF-α)and shoulder function score were assessed at baseline,after 10 and 15 d of ***:All four groups reported statistically significant improvement in vAS score,motion range,and shoulder function score(Pv3 group showed significant increase of anti-inflammatory(IL-10)and decrease of pro-inflammatory(IL-1β,TNF-α)cytokines after treatment(Pv3 group presented a significant difference between all outcomes compared to the control and other ***:Bv3 groups showed better recovery including reduced pain,improved motor function and normalized inflammatory cytokines than current therapy used in vietnam and other groups.

关键词： periarthritis humeroscapularis bee venom acupuncture visual analogue scale range of motion articular shoulder function score inflammatory cytokines

An Efficient Adaptive Hierarchical Sliding Mode Control Strategy Using Neural Networks for 3D Overhead Cranes

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International Journal of Automation and computing 2019年第5期16卷 614-627页

作者： viet-Anh Le Hai-Xuan Le linh nguyen Minh-Xuan Phan Department of Automatic Control Hanoi University of Science and TechnologyHanoi 10000Vietnam Centre for Autonomous Systems University of Technology SydneyNew South Wales 2007Australia

In this paper, a new adaptive hierarchical sliding mode control scheme for a 3D overhead crane system is proposed. A controller is first designed by the use of a hierarchical structure of two first-order sliding surfaces represented by two actuated and un-actuated subsystems in the bridge crane. Parameters of the controller are then intelligently estimated, where uncertain parameters due to disturbances in the 3D overhead crane dynamic model are proposed to be represented by radial basis function networks whose weights are derived from a Lyapunov function. The proposed approach allows the crane system to be robust under uncertainty conditions in which some uncertain and unknown parameters are highly difficult to determine. Moreover, stability of the sliding surfaces is proved to be guaranteed. Effectiveness of the proposed approach is then demonstrated by implementing the algorithm in both synthetic and reallife systems, where the results obtained by our method are highly promising.

关键词： 3D overhead crane adaptive control hierarchical sliding mode control neural network radial basis function