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Earthquake Engineering and Engineering Vibration 2022年第4期21卷 987-998页

作者： Zheng Yong yuan bo Research Center of Space Structures Guizhou UniversityGuiyang 550004China College of Civil Engineering Guizhou UniversityGuiyang 550004China Key Laboratory of Structural Engineering of Guizhou Province Guiyang 550025China

Double-column bridge piers are prone to local damage during earthquakes,leading to the destruction of *** improve the earthquake resistance of double-column bridge piers,a novel swing column device(SCD),consisting of a magnetorheological(MR)damper,a current controller,and a swing column,was designed for the present *** verify the seismic energy dissipation ability of the SCD,a lumped mass model for a double-column bridge pier with the SCD was established according to the low-order modeling method proposed by ***,the motion equation of the double-column bridge pier with the SCD was established based on the D′Alembert principle and solved with the use of computational *** was found that the displacement response of the double-column bridge pier was effectively controlled by the ***,due to rough current selection and a time delay,there is a significant overshoot of the bridge acceleration using ***,to solve the overshoot phenomenon,a current controller was designed based on fuzzy logic *** was found that the SCD design based on fuzzy control provided an ideal shock absorption effect,while reducing the displacement and acceleration of the bridge pier by 36.43%‒40.63%and 30.06%‒33.6%,respectively.

关键词： swing column device double-column bridge pier fuzzy control MR damper structural control low-element modeling method

Measure oriented training： a targeted approach to imbalanced classification problems

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Frontiers of Computer Science 2012年第5期6卷 489-497页

作者： bo yuan Wenhuang LIU Division of Informatics Graduate School at ShenzhenTsinghua UniversityShenzhen 518055China

Since the overall prediction error of a classifier on imbalanced problems can be potentially misleading and bi- ased, alternative performance measures such as G-mean and F-measure have been widely adopted. Various techniques in- cluding sampling and cost sensitive learning are often em- ployed to improve the performance of classifiers in such sit- uations. However, the training process of classifiers is still largely driven by traditional error based objective functions. As a result, there is clearly a gap between the measure accord- ing to which the classifier is evaluated and how the classifier is trained. This paper investigates the prospect of explicitly using the appropriate measure itself to search the hypothesis space to bridge this gap. In the case studies, a standard three- layer neural network is used as the classifier, which is evolved by genetic algorithms （GAs） with G-mean as the objective function. Experimental results on eight benchmark problems show that the proposed method can achieve consistently fa- vorable outcomes in comparison with a commonly used sam- pling technique. The effectiveness of multi-objective opti- mization in handling imbalanced problems is also demon- strated.

关键词： imbalanced datasets genetic algorithms (GAs),neural networks G-mean synthetic minority over-sampling technique (SMOTE)

Capillary method for measuring near-infrared spectra of microlitre volume liquids

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2007年第2期8卷 171-175页

作者： yuan bo MURAYAMA Koichi Department of Information Science and Optoelectronic Engineering State Key Laboratory of Modern Optical Instrumentation CNERC for Optical Instrument Zhejiang University Hangzhou 310027 China Department of Biochemistry and Biophysics Gifu University School of Medicine Gifu 500-8705 Japan

The present study theoretically explored the feasibility of the capillary method for measuring near-infrared (NIR) spectra of liquid or solution samples with microlitre volume, which was proposed in our previous studies. Lambert-Beer absorb- ance rule was applied to establish a model for the integral absorbance of capillary, which was then implemented in numerical analyses of the effects of capillary on various spectral features and dynamic range of absorption measurement. The theoretical speculations indicated that the capillary method might be used in NIR spectroscopy, which was further supported by the empirical data collected from our experiments by comparison between capillary NIR spectra of several organic solvents and cuvette cell NIR spectra.

关键词： Near-infrared (NIR) spectroscopy Capillary Cuvette cell Numerical analysis

Affine A_3^((1)) N=2 Monopole as the D Module and Aftine ADHMN Sheaf

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Communications in Theoretical Physics 2008年第2期49卷 439-450页

作者： HOU bo-Yu HOU bo-yuan Institute of Modern Physics Northwest University Xi＇an 710069 China Graduate School the Chinese Academy of Sciences Beijing 100049 China

A Higgs-Yang-Mills monopole scattering spherical symmetrically along light cones is given. The left incoming anti-self-dual α plane fields are holomorphic, but the right outgoing SD β plane fields are antiholomorphic, meanwhile the diffeomorphism symmetry is preserved with mutual inverse afiine rapidity parameters μ and μ^-1. The Dirac wave function scattering in this background also factorized respectively into the （anti）holomorphic amplitudes. The holomorphic anomaly is realized by the center term of a quasi Hopf algebra corresponding to an integrable conformal affine massive field. We find explicit Nahm transformation matrix （Fourier Mukai transformation） between the Higgs YM BPS （fiat） bundles （1） modules） and the affinized blow up ADHMN twistors （perverse sheafs）. Thus we establish the algebra for the ＇t Hooft Hecke operators in the Hecke correspondence of the geometric Langlands program.

关键词： affine BPS monopole affinized ADHMN sheaf affinized Nahm transformation 't Hooft-Hecke operator geometric Langlands program

采用骨料架构-固化技术对开挖淤泥加固试验研究

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土木与环境工程学报（中英文） 2025年第1期47卷 100-109页

作者：邵吉成袁波白银银骆嘉成浙江华坤地质发展有限公司浙江温州325006 温州市地质资源与生态环境重点实验室浙江温州325006 浙江省第十一地质大队浙江温州325006 温州市渣土利用开发股份有限公司浙江温州325700

为了对淤泥和建筑垃圾进行处置,实现二者的共同资源化利用,在室内和现场分别对淤泥进行固化试验。将建筑垃圾作为骨料按淤泥质量比的15%添加到淤泥中,再向淤泥中加入淤泥固化剂,通过机械搅拌的方式将淤泥与建筑垃圾、固化剂混合均匀,然... 详细信息

为了对淤泥和建筑垃圾进行处置,实现二者的共同资源化利用,在室内和现场分别对淤泥进行固化试验。将建筑垃圾作为骨料按淤泥质量比的15%添加到淤泥中,再向淤泥中加入淤泥固化剂,通过机械搅拌的方式将淤泥与建筑垃圾、固化剂混合均匀,然后对固化土进行养护。室内试验结果表明,当固化剂掺量为8%时,固化淤泥土强度较高,养护28 d后,室内无侧限抗压强度可达320 kPa;在现场试验中,静力触探试验和平板荷载试验表明,固化剂对淤泥的固化效果明显。将低剂量固化剂添加到淤泥中,固化淤泥土强度较低,骨料的架构作用不明显;当固化剂掺量为8%时,固化土的强度较高,骨料的架构作用有利于提升固化淤泥土的承载力,土体的承载力特征值可达325kPa,架构作用对固化淤泥土强度的提升率为71.05%,可实现淤泥和建筑垃圾的同步资源化利用。

关键词：淤泥固化骨料资源化利用架构作用承载力

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Towards the Framework of Understanding Autism Spectrum Disorders

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Neuroscience Bulletin 2019年第6期35卷 1110-1112页

作者： Zilong Qiu bo yuan Institute of Neuroscience State Key Laboratory of Neuroscience CAS Center for Excellence in Brain Science and Intelligence Technology Chinese Academy of Sciences

The prevalence of autism spectrum disorders(ASD)has been high worldwide,reaching 1/59 children in the United States as reported by the Centers of Disease Control and *** genetic components play a major role in ASD[1],it is astonishing that the occurrence of ASD would be this high probabily due to genetic *** is worthy to note that autistic phenotypes of ASD patients show great *** severity of autistic symptoms may be correlated with whether genetic mutations affect neural ***,we argue that the prevalence of severe ASD may be much lower than the common ASD usually reported.

关键词： prevalence ed. severity

All-solid-state pseudocapacitive micro-supercapacitors from laser-treated polymer derivatives

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Chinese Chemical Letters 2018年第4期29卷 596-598页

作者： Zhi Huang bo yuan College of Power Engineering Chongqing University Chongqing 400044 China School of Energy & Environmental Engineering University of Science & Technology Beijing Beijing 400044 China

We report a simple method for fabricating all-solid-state micro-supercapacitors, utilizing laser writing technology. Porous graphene films with three-dimensional networks induced by laser from commercial polymer was acted as scaffold for loading MnO2, a typical pseudocapacitive materials. Using gel electrolyte, all-solid-state pseudocapacitive micro-supercapacitors were fabricated. Compare to traditional printing and lithography techniques produced micro-supercapacitors, the as-fabricated devices demonstrate high volumetric capacitances, good stability and low leakage current, indicating a scalable and facile approach for future energy storage devices in portable microelectronics.

关键词： Micro-supercapacitors All-solid-state Laser technology Pseudocapacitive Microelectronics

Al-NaOH-Composited Liquid Metal:A Fast-Response Water-Triggered Material with Thermal and Pneumatic Properties

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Engineering 2020年第12期6卷 1454-1462页

作者： bo yuan Xuyang Sun Jing Liu Department of Biomedical Engineering School of MedicineTsinghua UniversityBeijing 100084China Key Laboratory of Cryogenics Technical Institute of Physics and ChemistryChinese Academy of SciencesBeijing 100190China

Water-triggered materials are receiving increasing attentions due to their diverse capabilities such as easy operation,soft actuation,low cost,environmental friendliness,and many more other ***,most of such materials generally have a long reaction time and require strict preservation conditions,which limit their adaptability in *** this study,a novel water-triggered material based on Al-NaOH-composited eutectic gallium–indium(eGaIn)alloys was proposed and demonstrated,which is rather fast-responsive and *** water is applied,the material thus fabricated would achieve a temperature rise of 40C in just several seconds along with gas production,indicating its big potential to be used as a thermal and pneumatic ***,the new material’s reusability and degradation ability were also *** that,a double-layer-structure smart bandage was designed,whose bulk was filled with Al-NaOH-composited eGaIn while BiInSn served as outer supporting *** to the experiments,a sheet structure with a thickness of 2 mm would support a weight of 1.8 kg after it was subjected to a cooling process,which is much better than the weight-bearing capability of *** addition,a prototype of a water-triggered sphere robot was also fabricated using Al-NaOH-eGaIn,which realized rolling and bouncing behaviors under specific external *** findings indicate the potential value of the present material in developing future wearable devices,soft actuators,and soft robotics.

关键词： Liquid metal Water-triggered materials Self-heating materials Soft actuator

Comparative effects of nitrogen application on growth and nitrogen use in a winter wheat/summer maize rotation system

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Journal of Integrative Agriculture 2017年第9期16卷 2062-2072页

作者： YIN Min-hua LI yuan-nong XU yuan-bo Key Laboratory of Agricultural Soil and Water Engineering in Arid and Semiarid Areas Ministry of Education/College of Water Resources and Architectural EngineeringNorthwest A&F UniversityYangling 712100P.R.China

The application of fertilizer in agricultural production has become universally common for achieving high crop yields and economic benefits, but it has potential impacts on food safety, energy crisis and environmental pollution. Optimal management of fertilization is thus necessary for maintaining sustainable agriculture. Two-year（2013–2015） field experiment was conducted, in Yangling（108°24′E, 34°20′N, and 521 m a.s.l.）, Shaanxi Province, China, to explore the effects of different nitrogen（N） applications on biomass accumulation, crop N uptake, nitrate N（NO_3~–-N） distribution, yield, and N use with a winter wheat/summer maize rotation system. The N applications consisted of conventional urea（U）（at 80（U80）, 160（U160）, and 240（U240） kg N ha^（–1）; 40% applied as a basal fertilizer and 60% top-dressed at jointing stage） and controlled-release urea（CRU）（at 60（C60）, 120（C120）, 180（C180）, and 240（C240） kg N ha~（^（–1））; all applied as a basal fertilizer） with no N application as a control（CK）. The continuous release of N from CRU matched well with the N demands of crop throughout entire growing stages. Soil NO_3~–-N content varied less and peaked shallower in CRU than that in urea treatments. The differences, however, were smaller in winter wheat than that in summer maize seasons. The average yield of summer maize was the highest in C120 in CRU treatments and in U160 in urea treatments, and apparent N use efficiency（NUE） and N agronomic efficiency（NAE） were higher in C120 than in U160 by averages of 22.67 and 41.91%, respectively. The average yield of winter wheat was the highest in C180 in CRU treatments and in U240 in urea treatments with C180 increasing NUE and NAE by averages of 14.89 and 35.62% over U240, respectively. The annual yields under the two N fertilizers were the highest in C120 and U160. The results suggested that CRU as a basal fertilizer once could be a promising alternative of urea as split application in semiarid areas.

关键词： controlled-release urea nitrogen availability soil fertility nitrogen use efficiency soil productivity

Statistical analysis on strain-rate effects during serrations in a Zr-based bulk metallic glass

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Journal of Iron and Steel Research International 2017年第4期24卷 455-461页

作者： bo yuan Jiao-jiao Li Jun-wei Qiao College of Materials Science and Engineering Taiyuan University of TechnologyTaiyuan 030024ShanxiChina Key Laboratory of Interface Science and Engineering in Advanced Materials Ministry of EducationTaiyuan University of TechnologyTaiyuan 030024ShanxiChina

By means of statistical analysis,the deformation mechanisms taking place in elastic loading and plastic shearing stages during serrated flows on the stress-strain curves for bulk metallic glasses were studied *** serration number presented a linear increasing tendency with the decrease of applied strain rates due to the reduction of free *** excellent plastic deformation was illustrated from the influences of structure arrangement with activation *** using mean-field theory（MFT）,maximum elastic-energy density at different strain rates could be predicted by MFT besides maximum stress drops during *** results were helpful for understanding the serrated flow behavior or designing decent schemes to improve the plasticity of bulk metallic glasses at room temperature.

关键词： Bulk metallic glass Shear band Mean-field theory Serration