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Virtual Nursing Using Deep Belief Networks for Elderly People (DBN-EP)

Computer Systems Science & engineering 2022年第9期42卷 985-1000页

作者： S.Rajasekaran G.Kousalya Department of Information technology KGiSL Institute of TechnologyCoimbatore641035India Department of Computer Science and engineering Coimbatore Institute of TechnologyCoimbatore641014India

The demand for better health services has resulted in the advancementof remote monitoring health, i.e., virtual nursing systems, to watch and supportthe elderly with innovative concepts such as being patient-centric, easier to use,and having smarter interactions and more accurate conclusions. While virtual nursing services attempt to provide consumers and medical practitioners with continuous medical and health monitoring services, access to allied healthcare expertssuch as nurses remains a challenge. In this research, we present Virtual NursingUsing Deep Belief Networks for Elderly People (DBN-EP), a new framework thatprovides a virtual nurse agent deployed on a senior citizen’s home, workplace, orcare centre to help manage their health condition on a continuous basis. Using thismethod, healthcare providers can assign various jobs to nurses by utilizing a general task definition mechanism, in which a task is defined as a combination ofmedical workflow, operational guidelines, and data gathered from a remotelymonitored virtual nursing system. Practitioners are in charge of DBN-EP andmake treatment decisions for patients. This allows a DBN-EP to act as a personalized full-time nurse for a client by carrying out practitioner support activitiesbased on information gathered about the client’s health. An electronic Personalhealth Record (ePHR) system, such as a specialized web portal and mobile apps,could provide such patient information to elderly person family members and carecentres. We created a prototype system using a DBN-EP system that allows traditional client applications and healthcare provider systems to collaborate. Finally,we demonstrate how this system may benefit the elderly through a result anddebate.

关键词： Deep belief networks RBM video mining elder people elder care

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Effect of liquid viscoelasticity on the interactions between cavitation bubbles and free surfaces

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Journal of Hydrodynamics 2023年第5期35卷 887-898页

作者： Yang Liu Zhi-ying Zheng Zhi-bo He Tian-bao Zeng David Ezekoye Wei-hua Cai Hong Qi School of Energy Science and engineering Harbin Institute of TechnologyHarbin150001China School of Civil engineering Harbin Institute of TechnologyHarbin150090China School of Energy and Power engineering Northeast Electric Power UniversityJilin132012China

The influence of liquid viscoelasticity on the interaction between cavitation bubbles and free surfaces is of great practical significance in understanding bubble dynamics in biological systems. A series of millimeter cavitation bubbles were induced by laser near the free surfaces of the water and viscoelastic polyacrylamide (PAM) solutions with different concentrations. The effects of liquid viscoelasticity on the interactions of cavitation bubbles with free surfaces are analyzed from the perspectives of the evolution of free surface and bubble dynamics. The experimental results show that as the dimensionless standoff distance increases, the evolutions of free surface behaviors in all experimental fluids can be divided into six types of water mounds, i.e., breaking wrinkles, spraying water film, crown, swallowed water spike, hillock, and slight bulge. All the critical values of the dimensionless distance dividing different types decrease with increasing concentration. The evolutions of first four types of water mounds in PAM solutions differ from those in the water. Water droplets splashing in different directions are produced around the breaking wrinkles in the water. Meanwhile, the breaking wrinkles in PAM solution move with the “liquid filaments” towards the central axis. The water spike in the pattern of spraying water film in PAM solution is more stable than that in the water. As the solution concentration increases, the water skirt in the pattern of crown contracts earlier and faster, and the rate of increase in the height of the water skirt decreases. For swallowed water spike in PAM solution, the upper part of the newly formed water spike is not significantly thicker than the middle part, and thus the water waist structure does not form. Liquid viscoelasticity inhibits the bubble growth and collapse, and the bubble migration as well, especially in the second period. Shorter and thicker cavities are formed in PAM solutions with higher concentration, while slender and stable cavities formed in the water at

关键词： Viscoelasticity cavitation bubble free surface water mound bubble dynamics

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Liquefaction-induced damage evaluation of earth embankment and corresponding countermeasure

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Frontiers of Structural and Civil engineering 2022年第9期16卷 1183-1195页

作者： Linlin GU Wei ZHENG Wenxuan ZHU Zhen WANG Xianzhang LING Feng ZHANG Department of Civil engineering Nanjing University of Science and TechnologyNanjing 210094China Department of Civil engineering Shanghai Jiao Tong UniversityShanghai 200030China School of Mechanical engineering Nanjing University of Science and TechnologyNanjing 210094China Department of Civil engineering Harbin Institute of TechnologyHarbin 150001China Department of Civil engineering Nagoya Institute of TechnologyNagoya 4668555Japan

Liquefaction of sandy soils is a big threat to the stability and the safety of an earth embankment laid on saturated soils.A large number of liquefaction-induced damages on embankment due to different types of earthquakes have been reported worldwide.In this research,the dynamic behaviors of earth embankment and the reinforcement effects of grouting as remediation method,subjected to moderate earthquake EQ1 and strong earthquake EQ2,were numerically investigated.The seismic behaviors of ground composed of cohesionless sandy soil and cohesive clayey soil were uniformly described by the cyclic mobility(CM)model,which is capable of describing accurately the mechanical property of the soil due to monotonic and cyclic loadings by accounting for stress-induced anisotropy,over-consolidation,and soil structure.It is known from the numerical investigation that the embankment would experience destructive deformation,and that the collapse mode was closely related to the properties of input seismic motion because high intensities and long durations of an earthquake motion could lead to significant plastic deformation and prolonged soil liquefaction.Under the strong seismic loading of EQ2,a circular collapse surface,combined with huge settlement and lateral spread,occurred inside the liquefication zone and extended towards the embankment crest.In contrast,in moderate earthquake EQ1,upheaval was observed at each toe of the embankment,and instability occurred only in the liquefied ground.An anti-liquefaction remediation via grouting was determined to significantly reduce liquefaction-induced deformation(settlement,lateral spreading,and local uplift)and restrain the deep-seated circular sliding failure,even though the top sandy soil liquefied in both earthquakes.When the structure was subjected to EQ2 motion,local failure occurred on the embankment slope reinforced with grouting,and thus,an additional appropriate countermeasure should be implemented to further strengthen the slope.For both input motions,the surface deformation o

关键词： dynamic response earth embankment damage pattern liquefaction ground improvement

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High-Index Faceted Nanocrystals as Highly Efficient Bifunctional Electrocatalysts for High-Performance Lithium-Sulfur Batteries

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Nano-Micro Letters 2022年第2期14卷 324-338页

作者： Bo Jiang Da Tian Yue Qiu Xueqin Song Yu Zhang Xun Sun Huihuang Huang Chenghao Zhao Zhikun Guo Lishuang Fan Naiqing Zhang State Key Laboratory of Urban Water Resource and Environment School of Chemistry and Chemical EngineeringHarbin Institute of TechnologyHarbin 150001People’s Republic of China Academy of Fundamental and Interdisciplinary Sciences Harbin Institute of TechnologyHarbin 150001People’s Republic of China School of Energy Science and engineering Harbin Institute of TechnologyHarbin 150001People’s Republic of China

Precisely regulating of the surface structure of crystalline materials to improve their catalytic activity for lithium polysulfides is urgently needed for high-performance lithium-sulfur(Li-S)batteries.Herein,high-index faceted iron oxide(Fe_(2)O_(3))nanocrystals anchored on reduced graphene oxide are developed as highly efficient bifunctional electrocatalysts,effectively improving the electrochemical performance of Li-S batteries.The theoretical and experimental results all indicate that high-index Fe_(2)O_(3)crystal facets with abundant unsaturated coordinated Fe sites not only have strong adsorption capacity to anchor polysulfides but also have high catalytic activity to facilitate the redox transformation of polysulfides and reduce the decomposition energy barrier of Li_(2)S.The Li-S batteries with these bifunctional electrocatalysts exhibit high initial capacity of 1521 mAh g^(-1)at 0.1 C and excellent cycling performance with a low capacity fading of 0.025%per cycle during 1600 cycles at 2 C.Even with a high sulfur loading of 9.41 mg cm^(-2),a remarkable areal capacity of 7.61 mAh cm^(-2)was maintained after 85 cycles.This work provides a new strategy to improve the catalytic activity of nanocrystals through the crystal facet engineering,deepening the comprehending of facet-dependent activity of catalysts in Li-S chemistry,affording a novel perspective for the design of advanced sulfur electrodes.

关键词： High-index faceted Fe_(2)O_(3)nanocrystals Unsaturated coordinated Lithium-sulfur batteries Electrocatalysis

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A Systematic Review of Thermoelectric Peltier Devices: Applications and Limitations

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Fluid Dynamics & Materials Processing 2023年第1期19卷 187-206页

作者： M.K.Shilpa Md Abdul Raheman Abdul Aabid Muneer Baig R.K.Veeresha Nagesh Kudva Department of Computer Science and engineering NMAM Institute of TechnologyUdupi574110India Department of Electrical and Electronics engineering NMAM Institute of TechnologyUdupi574110India Department of engineering Management College of EngineeringPrince Sultan UniversityRiyadh11586Saudi Arabia Department of Mechanical engineering NMAM Institute of TechnologyUdupiKarnataka574110India

Conventional refrigeration processes release ammonia and freon into the atmosphere,which results in global warming.These problems may be overcome by using thermoelectric modules because of the absence of coolants or refrigerants in these systems.However,the cooling performances of such modules are relatively small in comparison to those of conventional refrigerators.In this paper,the working principles of thermoelectric modules are discussed together with a review of different relevant aspects,namely:the thermoelectric materials,and their mechanical properties used to build thermoelectric devices,different types of thermoelectric devices available on the market,mathematical modeling of thermoelectric materials,and various applications of thermoelectric materials in different fields.

关键词： TEG peltier module seebeck effect refrigerator CoP TEC

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Wake Effects on A Hybrid Semi-Submersible Floating Wind Farm with Multiple Hub Heights

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China Ocean engineering 2023年第1期37卷 101-114页

作者： XU Xiao-sen GU Jia-yang LING Hong-jie YANG Pu-yi WANG Shuai-shuai XING Yi-han Oleg GAIDAI ZHANG Zhong-yu Marine Equipment and technology institute Jiangsu University of Science and TechnologyZhenjiang 212100China Department of Mechanical and Civil engineering Florida Institute of TechnologyMelbourne 32901United States Department of Marine technology Norwegian University of Science and TechnologyTrondheim 7491Norway Department of Mechanical and Structural engineering and Materials Science University of StavangerStavanger 4021Norway College of engineering Science and technology Shanghai Ocean EngineeringShanghai 201306China

Wind farms generally consist of a single turbine installed with the same hub height. As the scale of turbines increases,wake interference between turbines becomes increasingly significant, especially for floating wind turbines(FWT).Some researchers find that wind farms with multiple hub heights could increase the annual energy production(AEP),while previous studies also indicate that wake meandering could increase fatigue loading. This study investigates the wake interaction within a hybrid floating wind farm with multiple hub heights. In this study, FAST.Farm is employed to simulate a hybrid wind farm which consists of four semi-submersible FWTs(5MW and 15MW) with two different hub heights. Three typical wind speeds(below-rated, rated, and over-rated) are considered in this paper to investigate the wake meandering effects on the dynamics of two FWTs. Damage equivalent loads(DEL) of the turbine critical components are computed and analyzed for several arrangements determined by the different spacing of the four turbines. The result shows that the dynamic wake meandering significantly affects downstream turbines’ global loadings and load effects. Differences in DEL show that blade-root flapwise bending moments and mooring fairlead tensions are sensitive to the spacing of the turbines.

关键词： hybrid floating wind farm wake meandering multiple hub heights floating wind turbine FAST.Farm fatigue

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Use of Evidence-Based Research Approach in RCTs of Acupuncture-Related Therapies for Primary Dysmenorrhea: A Meta-Research

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Chinese Journal of Integrative Medicine 2024年第6期30卷 551-558页

作者： HU Xiao-yi TIAN Zi-yu CHEN Huan HU Xiang-yu MING Tian-yu PENG Hao-xuan JIAO Rui-min SHI Lan-jun XIU Wen-cui YANG Ji-wei GANG Wei-juan JING Xiang-hong institute of Acupuncture and Moxibustion China Academy of Chinese Medical SciencesBeijingChina Department of Traditional Chinese Medicine Beijing Puren HospitalBeijing100062China

Objective To assess the use of evidence-based research(EBR)approach in randomized controlled trials(RCTs)of acupuncture-related therapies for primary dysmenorrhea(PD).Methods PubMed,EMBASE,Cochrane Library,China National Knowledge Infrastructure,Wanfang Database,Chinese biomedical Database,and China Science and technology Journal Database were searched from January 2013 to December 2022 for RCTs of acupuncture on PD.The full text and references of each RCT were read to assess whether systematic reviews(SRs)or other types of studies with similar research questions and end-users’perspectives were cited to justify and design the trial.In addition,the discussion section were analyzed to evaluate whether trials placed the new result in the existing SRs to draw a conclusion.Multivariable logistic regression was used to find variables that associated with 3 aspects of EBR approach:(1)citing clinical studies for justification,(2)citing relevant studies that obtain the perspectives of end users,and(3)citing clinical studies for results discussion.Results Of 473 RCTs included,45.67%(216)of the trials cited relevant similar studies,21.56%(102)referenced to the studies that collected end-users’perspectives,and 10.99%(52)placed result in the context of the previous research.Few RCTs appropriately applied EBR approach.Among all the included studies,3.17%(15)of the trials used SRs to inform study questions but none of them used updated SRs with acceptable quality;1.05%(5)of the trials cited SRs of end-user’s perspectives in the justification and design of the study,and only 1 trial added results in existing SR to draw a conclusion.Year of publication,language,funding,registration,ethical approval and number of sites were significantly associated with 1 of the 3 aspects of EBR approach.Conclusions Few RCTs in acupuncture-related therapies for PD used the EBR approach to minimize research redundancy.Researchers,research institutes,funding agencies,ethics committees,journals and peer reviewers in acupuncture should make efforts to

关键词： evidence-based research acupuncture therapy primary dysmenorrhea randomized controlled trial systematic review end-usersperspective meta-research

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Effects of Blending Ratio on Combustion and NO Emission Characteristics during Co-Firing of Semi-Char and Lignite in a 350 kW Pulverized Coal-Fired Furnace

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Journal of Thermal Science 2023年第3期32卷 1292-1305页

作者： YAN Yonghong PENG Zhengkang SUN Liutao CHEN Dengke SUN Rui College of Electrical and Power engineering Taiyuan University of TechnologyTaiyuan 030024China School of Energy Science and engineering Harbin Institute of TechnologyHarbin 150001China

The influence of the blending ratio of pyrolyzed semi-char(SC)on the ignition,NO emission and burnout characteristics of lignite co-fired with SC was investigated in a 350 kW fuel-rich/lean combustion furnace.The flame temperature and concentrations of gaseous species including O_(2),CO,and NO,were measured in detail.The results indicated that the ignition characteristics of the blended fuel worsened with increasing SC blending ratio,such as an elongated ignition standoff distance.The addition of SC to lignite delayed the appearance of a stable flame boundary,and the stable combustion zone moved down,but the final combustion stability was gradually strengthened in the later combustion stage.NO emission concentration at the primary combustion zone(PCZ)outlet was the lowest at 472.6 mg/m^(3)@6%O_(2)when the SC blending ratio was 25%.The combustion zone and reducing zone areas in PCZ were defined to evaluate the NO reduction characteristics,and quantitative analysis using a multiple linear regression model showed that heterogeneous reduction was more important than homogeneous reduction in lowering NO emissions.The Raman spectrum of the char sample indicated that the addition of lignite promoted the formation of small aromatic rings in the early ignition stage,corresponding to a higher char reactivity.The burnout ratio of pure lignite was maximal and was decreased by increasing the SC blending ratio.Synthetically,considering the ignition standoff distance,NO emission,and burnout ratio,the optimum SC blending ratio was estimated to be 25%.

关键词： co-firing blending ratio ignition characteristics NO emission burnout ratio

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Red Blood Cell-Mimic Nanocatalyst Triggering Radical Storm to Augment Cancer Immunotherapy

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Nano-Micro Letters 2022年第4期14卷 15-28页

作者： Jiong Li Sijia Wang Xinyi Lin Yanbing Cao Zhixiong Cai Jing Wang Zhenxi Zhang Xiaolong Liu Ming Wu Cuiping Yao Key Laboratory of biomedical Information engineering of Ministry of Education Institute of Biomedical Photonics and SensingSchool of Life Science and TechnologyXi’an Jiaotong UniversityXi’an 710049People’s Republic of China The United Innovation of Mengchao Hepatobiliary technology Key Laboratory of Fujian Province Mengchao Hepatobiliary Hospital of Fujian Medical UniversityFuzhou 350025People’s Republic of China Mengchao Med‑X Center Fuzhou UniversityFuzhou 350116People’s Republic of China

Red blood cells(RBCs)have recently emerged as promosing candidates for cancer treatment in terms of relieving tumor hypoxia and inducing oxidative damage against cancer cells,but they are still far from satisfactory due to their limited oxygen transport and reactive oxygen species generation rate in tumor tissue.Herein,artificial RBCs(designated FTP@RBCM)with radical storm production ability were developed for oncotherapy through multidimensional reactivity pathways of Fe-protoporphyrin-based hybrid metal-organic frameworks(FTPs,as the core),including photodynamic/chemodynamic-like,catalase-like and glutathione peroxidase-like activities.Meanwhile,owing to the advantages of long circulation abilities of RBCs provided by their cell membranes(RBCMs),FTP with a surface coated with RBCMs(FTP@RBCM)could enormously accumulate at tumor site to achieve remarkably enhanced therapeutic efficiency.Intriguingly,this ROS-mediated dynamic therapy was demonstrated to induce acute local inflammation and high immunogenic cancer death,which evoked a systemic antitumor immune response when combined with the newly identified T cell immunoglobulin and mucin-containing molecule 3(Tim-3)checkpoint blockade,leading to not only effective elimination of primary tumors but also an abscopal effect of growth suppression of distant tumors.Therefore,such RBC-mimic nanocatalysts with multidimensional catalytic capacities might provide a promising new insight into synergistic cancer treatment.

关键词： Red blood cell mimic Metal-organic framework Nanocatalyst Radical storm Cancer immunotherapy

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A gradient solid electrolyte interphase with high Li+conductivity induced by bisfluoroacetamide additive for stable lithium metal batteries

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Nano Research 2023年第6期16卷 8425-8432页

作者： Zhaoyang Sun Ziyue Wen Yi Chen Yue Ma Jinxiang Zhang Yuejiao Li Li Li Renjie Chen Beijing Key Laboratory of Environmental Science and engineering School of Material Science&EngineeringBeijing Institute of TechnologyBeijing 100081China institute of Advanced technology Beijing Institute of TechnologyJinan 250300China Collaborative Innovation Center of Electric Vehicles in Beijing Beijing 100081China

Stable Li metal anodes have become the driving factor for high-energy-density battery systems.However,uncontrolled growth of Li dendrite hinders the application of rechargeable Li metal batteries(LMBs).Here,a multifunctional electrolyte additive bisfluoroacetamide(BFA)was proposed to facilitate high-performance LMBs.The uniform and dense deposition of Li^(+) was achieved due to the reduced nucleation and plateau overpotential by the addition of BFA.Moreover,X-ray photoelectron spectroscopy(XPS)tests reveal a gradient solid electrolyte interface(SEI)structure on the Li metal surface.Cyclic voltammetry(CV)curves at different sweep speeds prove the formation of pseudocapacitance at the electrode-electrolyte interface,which accelerates the Li+transport rate and protects the electrode structure.The low activation energy also indicates the ability of rapid Li^(+) transportation in electrolyte bulk.Therefore,the Li||Li symmetric cells with 1.0 wt.%BFA electrolyte exhibit good cycling performance at 0.5 mA·cm^(−2)for over 2000 h,and Li||LiNi_(0.6)Co_(0.2)Mn_(0.2)O_(2)(NCM622)full cells maintain a high capacity for 200 cycles at 1 C rate.

关键词： electrolytes additives solid electrolyte interphase Li dendrites Li metal batteries

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