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Data-driven decision-making model for determining the number of volunteers required in typhoon disasters

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Journal of Safety Science and Resilience 2023年第3期4卷 229-240页

作者： Sheng-Qun Chen jie bai School of Information Engineering Fujian Business UniversityFuzhou 350506China School of computer and information Fujian agriculture and Forestry UniversityFuzhou 350002China

Volunteer teams provide valuable support after large-scale ***,excessive volunteer participation poses challenges for formal ***,an appropriate decision-making method is required to quickly determine the number of volunteers required after a *** study proposes a data-driven decision-making(D^(3)M)method for typhoon disaster volunteerism that can effectively predict the number of volunteers *** data from actual cases were gathered,analyzed,and preprocessed to prepare the *** selection,D^(3)M model training and optimization,and model validation were performed to fine-tune the volunteer participant *** data from an actual typhoon in the Philippines,the rationality and efficacy of the method were verified through a comparative analysis of the experimental *** proposed method learns from disaster-event data to quickly predict the number of volunteers needed,such that it not only reasonably allocates volunteers to assist professional teams in rescue but also avoids secondary problems caused by an overwhelming response.

关键词： Data-driven decision-making Optimization Rescue Typhoon

A New Rational Algebraic Approach to Find Exact Analytical Solutions to a （2＋1）-Dimensional System

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Communications in Theoretical Physics 2007年第5X期48卷 801-810页

作者： bai Cheng-jie ZHAO Hong Communication School Shandong Normal University Jinan 250014 China School of Physical Science and Information Engineering Liaocheng University Liaocheng 252059 China

In this paper, we present a new rational algebraic approach to uniformly construct a series of exact analytical solutions for nonlinear partial differential equations. Compared with most existing tanh methods and other sophisticated methods, the proposed method not only recovers some known solutions, but also finds some new and general solutions. The solutions obtained in this paper include rational form triangular periodic wave solutions, solitary wave solutions, and elliptic doubly periodic wave solutions. The efficiency of the method can be demonstrated on （2＋1）-dimensional dispersive long-wave equation.

关键词： rational algebraic approach (2+1)-dimensional dispersive long-wave equation exact solutions

A Generalized Variable-Coefficient Algebraic Method Exactly Solving （3＋1）-Dimensional Kadomtsev-Petviashvilli Equation

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Communications in Theoretical Physics 2005年第5X期44卷 821-826页

作者： bai Cheng-Lin bai Cheng-jie ZHAO Hong physical Science and Information Engineering School Liaocheng University Liaocheng 252059 China Communication School Shandong Normal University Jinan 250014 China

A generalized variable-coefficient algebraic method is appfied to construct several new families of exact solutions of physical interest for （3＋1）-dimensional Kadomtsev-Petviashvilli （KP） equation. Among them, the Jacobi elliptic periodic solutions exactly degenerate to the soliton solutions at a certain limit condition. Compared with the existing tanh method, the extended tanh method, the Jacobi elliptic function method, and the algebraic method, the proposed method gives new and more general solutions.

关键词： generalized variable-coefficient algebraic method (3+1)-dimensional KP equation exact explicit solutions

Examination of seasonal variation of the equatorial undercurrent termination in the Eastern Pacifi c diagnosed by ECCO2

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Journal of Oceanology and Limnology 2022年第3期40卷 870-890页

作者： jie WANG Xuezhi bai Hengling LENG College of Oceanography Hohai UniversityNanjing 210098China Key Laboratory of Marine Hazards Forecasting Ministry of Natural ResourcesHohai UniversityNanjing 210098China

Seasonal variations of the equatorial undercurrent(EUC) termination in the Eastern Pacific,and their mechanism were examined using the Estimating the Circulation and Climate of the Ocean,PhaseⅡ(ECCO2).The ECCO2 reproduced a weak and shallow eastward EUC east of the Galapagos Islands,with annual mean transport of half of EUC to the west of the *** diagnosis of zonal momentum equation suggests that the zonal advection(nonlinear terms) drives the EUC beyond the Islands rather than the pressure gradient *** EUC in the Far Eastern Pacific has the large st core velocity in boreal spring and the smallest one in boreal summer,and its volume transport exhibits two maxima in boreal spring and *** seasonal variability of the EUC in the Eastern Pacific is dominated by the Kelvin and Rossby waves excited by the zonal winds anomalies in the central and Eastern Pacific that are associated with the seasonal relaxation or intensification of the trade *** the Far Eastern Pacific to the east of 120°W,the eastward propagation Kelvin waves play a dominate role in the seasonal cycle of the EUC,results in a semiannual fluctuation with double peaks in boreal spring and autumn.A construction of water mass budget suggests that approximately 24.1% of the EUC water east of 100°W has upwelled to the mixed layer by0.35 m/*** estimated upwelling is stronge st during boreal autumn and weake st during boreal *** is also found that approximately 42.6% of the EUC turns westward to feed the south equatorial current(SEC),13.2% flows north of the equator,and 20.1% flows south of the equator,mainly contributing to Peru-Chile undercurrent.

关键词： equatorial undercurrent termination Eastern Pacific Ocean Estimating the Circulation and Climate of the Ocean,Phase II(ECCO2) Peru-Chile undercurrent Galapagos Islands

Stimuli-responsive nanocarriers for therapeutic applications in cancer

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Cancer Biology & Medicine 2021年第2期18卷 319-335页

作者： Xubo Zhao jie bai Wenjing Yang Green Catalysis Center and College of ChemistryZhengzhou UniversityZhengzhou 450001China Department of Anesthesiology The First Affiliated Hospital of Zhengzhou UniversityZhengzhou 450052China

Cancer has become a very serious challenge with aging of the human *** in nanotechnology have provided new perspectives in the treatment of *** the combination of nanotechnology and therapeutics,nanomedicine has been successfully used to treat cancer in recent *** terms of nanomedicine,nanocarriers play a key role in delivering therapeutic agents,reducing severe side effects,simplifying the administration scheme,and improving therapeutic *** of the structure and function of nanocarriers for improved therapeutic efficacy in cancer have attracted increasing attention in recent ***-responsive nanocarriers penetrate deeply into tissues and respond to external or internal stimuli by releasing the therapeutic agent for cancer ***,stimuli-responsive nanocarriers reduce the severe side effects of therapeutic agents,when compared with systemic chemotherapy,and achieve controlled drug release at tumor ***,the development of stimuli-responsive nanocarriers plays a crucial role in drug delivery for cancer *** article focuses on the development of nanomaterials with stimuli-responsive properties for use as nanocarriers,in the last few *** nanocarriers are more effective at delivering the therapeutic agent under the control of external or internal ***,nanocarriers with theranostic features have been designed and fabricated to confirm their great potential in achieving effective treatment of cancer,which will provide us with better choices for cancer therapy.

关键词： Nanocarriers therapeutic agent nanomedicine stimuli-responsiveness cancer therapy

Left-handed properties of a composite structure with metallic wires in a homogeneous Lorentz medium

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International Journal of Minerals,Metallurgy and Materials 2012年第2期19卷 159-164页

作者： Yang bai Fang Xu Li-jie Qiao Key Laboratory of Environmental Fracture(Ministry of Education) University of Science and Technology BeijingBeijing 100083China

The electromagnetic properties of a composite structure with metallic wires in a Lorentz medium were studied. The results show that the electromagnetic properties of the medium host influence the plasma resonance of metallic wires and the left-handed character of the composite. The plasma frequency of metallic wires reduces with the rise of permittivity or permeability of the medium host. Also, the negative permeability of the medium can destroy the wires’ plasma resonance and prevent the realization of left-handed properties. The high loss of medium permittivity or permeability also inhibits the metallic plasma resonance. The negative influence of the media host on the left-handed properties of the composite structure can be effectively reduced by proper structure design, such as introducing a nonmagnetic medium in the host or using an anisotropic medium.

关键词： electromagnetic waves left-handed materials plasma resonance electromagnetic interaction

A confinement strategy to in-situ prepare a peanut-like N-doped, C-wrapped TiO_(2) electrode with an enhanced desalination capacity and rate for capacitive deionization

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Nano Research 2021年第3期14卷 684-691页

作者： Mingxing Liang Xueting bai Fei Yu jie Ma College of Marine Ecology and Environment Shanghai Ocean UniversityShanghai201306China State Key Laboratory of Pollution Control and Resource Reuse College of Environmental Science and EngineeringTongji UniversityShanghai200092China Research Center for Environmental Functional Materials College of Environmental Science and EngineeringTongji University1239 Siping RoadShanghai200092China Shanghai Institute of Pollution Control and Ecological Security Shanghai200092China

Capacitive deionization(CDI)technology has been considered a promising desalination technique,especially for brackish water,because of its relatively low energy consumption,facile operation,and easy regeneration of ***,the desalination capacity,cost,fabrication method,electrochemical stability,and environmental unfriendliness of the electrodes have restricted the practical application of the CDI ***,we reported the one-step in situ preparation of nitrogen-doped and carbon-decorated MXene-derived TiO_(2)(termed N-TiO_(2−x)/C)through the confinement-growth *** small particle size(∼25 nm)and uniform distribution of a peanut-like N-TiO_(2−x)/C material could be ascribed to the confined growth space created by the nanoporous structure of melamine *** defects produced by N doping provide an enhanced electrical conductivity and more adsorption sites,while wrapping with a carbon shell layer increases the conductivity and offers protection for N-TiO_(2−x) to achieve an excellent electrochemical *** prepared N-TiO_(2−x)/C electrode is hydrophilic due to the abundant oxygen-containing functional groups(e.g.,C-O,N-Ti-O,-NO_(x),and-OH)and exhibits a high salt removal capacity(33.4 mg·g^(−1)),desalination rate(1.5 mg·g^(−1)·min^(−1)),and remarkable cycling stability(without declining after 100 cycles),which might be ascribed to the synergistic effects of the short ion diffusion path,more active adsorption sites,enhanced conductivity,pseudocapacitive behavior,and protection of the carbon shell *** work provides a confined-growth strategy to develop MXene-derived oxide electrodes for electrochemical desalination.

关键词： capacitive deionization confinement growth MXene-derived N-doped pseudocapacitive behavior

Insight into the change in carbon structure and thermodynamics during anthracite transformation into graphite

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International Journal of Minerals,Metallurgy and Materials 2020年第2期27卷 162-172页

作者： Tian Qiu Jian-guo Yang Xue-jie bai National Engineering Research Center of Coal Preparation and Purification China University of Mining and TechnologyXuzhou 221116China School of Chemical Engineering and Technology China University of Mining and TechnologyXuzhou 221116China

The thermodynamic and kinetic mechanisms of Taixi anthracite during its graphitization process were *** understand the variation trends of carbon arrangement order,microcrystal size,and graphitization degree against temperature during the graphitization process,a series of experiments were performed using Raman spectroscopy and X-ray diffraction(XRD).Subsequently,the influencing factors of the dominant reaction at different temperatures were analyzed using thermodynamics and *** results showed that the graphitization process of Taixi anthracite can be divided into three stages from the perspective of reaction thermodynamics and *** played a crucial role in the formation and growth of a graphitic ***,multivariate mechanisms coexisted in the graphitization *** ultrahigh temperatures,the defects of synthetic graphite could not be completely eliminated and perfect graphite crystals could not be *** low temperatures,the reaction is mainly controlled by dynamics,while at high temperatures,thermodynamics dominates the direction of the reaction.

关键词： anthracite graphitization thermodynamics kinetics

Three-component one-pot synthesis of 1,2,3,4-tetrahydroquinoline derivatives in hexafluoroisopropanol

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Chinese Chemical Letters 2008年第8期19卷 921-924页

作者： jie Zhou bai Ling Xu Institute of Materia Medica Chinese Academy of Medical Sciences ＆ Peking Union Medical College Beijing 100050 China

The one-pot aza-Diels-Alder reaction of substituted aromatic amines, ethyl glyoxylate and benzyl vinylcarbamate or N- benzyloxycarbonyl 2-pyrroline was conducted in hexafluoroisopropanol, providing the desired 1,2,3,4... 详细信息

关键词： Aza-Diels-Alder reaction Tetrahydroquinoline Hexafluoroisopropanol (HFIP) Fluorinated solvent