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3D生物打印 1

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三维毛笔模型;三维笔道;三维交互绘制;实时力反馈技术 1

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Multi-objective optimization of a 3D vaneless diffuser based on fuzzy theory

GAO Chuang, GU Chuangang, WANG Tong, SHU Xinwei

《能源前沿(英文)》 2008年 第2卷 第1期   页码 66-70 doi: 10.1007/s11708-008-0006-5

摘要: An optimization model based on fuzzy theory was set up and the corresponding Interactive modified simplex (IMS) method was developed to solve it. Both static pressure recovery and total pressure loss were considered in the model. Computational fluid dynamics (CFD) method was applied to solve the Reynolds-Averaged Navier-Stokes equation (RANS) and to find flow field distribution to get the value of the object function. After receiving the new shroud curve, grid movement and redrawing technology were adopted to avoid grid-line crossing and negative cells. The shroud curve was fitted with B-spline. The optimized results concur with the results reported in references.

关键词: Computational     pressure recovery     B-spline     technology     corresponding Interactive    

Authors Notes Provided by Corresponding Authors

《工程管理前沿(英文)》 2014年 第1卷 第1期   页码 115-118 doi: 10.15302/J-FEM-2014017

Author Notes Provided by Corresponding Authors

《工程管理前沿(英文)》 2016年 第3卷 第1期   页码 99-100 doi: 10.15302/J-FEM-2016012

摘要:

Author Notes Provided by Corresponding Authors

《工程管理前沿(英文)》 2015年 第2卷 第4期   页码 393-394 doi: 10.15302/J-FEM-2015065

Thermally developing forced convection and the corresponding thermal stresses in a porous plate channel

YANG Xiao, LIU Xuemei

《机械工程前沿(英文)》 2007年 第2卷 第1期   页码 57-61 doi: 10.1007/s11465-007-0009-7

摘要: Based on the Darcy fluid model, by considering the effects of viscous dissipation due to the interaction between solid skeleton and pore fluid flow and thermal conduction in the direction of the fluid flow, the thermally developing forced convection of the local thermal equilibrium and the corresponding thermal stresses in a semi-infinite saturated porous plate channel are investigated in this paper. The expressions of temperature, local Nusselt number and corresponding thermal stresses are obtained by means of the Fourier series, and the distributions of the same are also shown. Furthermore, influences of the P晱let number () and Brinkman number () on temperature, Nusselt number () and thermal stress are revealed numerically.

关键词: semi-infinite saturated     direction     interaction     skeleton     thermal equilibrium    

long-term model with consideration of uncertainties for deployment of distributed energy resources using interactive

Iraj AHMADIAN,Oveis ABEDINIA,Noradin GHADIMI

《能源前沿(英文)》 2014年 第8卷 第4期   页码 412-425 doi: 10.1007/s11708-014-0315-9

摘要: This paper presents a novel modified interactive honey bee mating optimization (IHBMO) base fuzzy stochastic long-term approach for determining optimum location and size of distributed energy resources (DERs). The Monte Carlo simulation method is used to model the uncertainties associated with long-term load forecasting. A proper combination of several objectives is considered in the objective function. Reduction of loss and power purchased from the electricity market, loss reduction in peak load level and reduction in voltage deviation are considered simultaneously as the objective functions. First, these objectives are fuzzified and designed to be comparable with each other. Then, they are introduced into an IHBMO algorithm in order to obtain the solution which maximizes the value of integrated objective function. The output power of DERs is scheduled for each load level. An enhanced economic model is also proposed to justify investment on DER. An IEEE 30-bus radial distribution test system is used to illustrate the effectiveness of the proposed method.

关键词: component     distributed energy resources     fuzzy optimization     loss reduction     interactive honey bee mating optimization (IHBMO)     voltage deviation reduction     stochastic programming    

Synthesis of p -substituted tetraphenylporphyrins and corresponding ferric complexes with mixed-solvents

Zhicheng SUN, Yuanbin SHE, Rugang ZHONG,

《化学科学与工程前沿(英文)》 2009年 第3卷 第4期   页码 457-461 doi: 10.1007/s11705-009-0169-6

摘要: By using mixed-solvents method, five kinds of -substituted tetraphenylporphyrin compounds [T(-R)PPH, R=NO, Cl, CH, OCH, OH] were synthesized by the condensation of -substituted benzaldehyde with pyrrole in mixed solvents (propionic acid, acetic acid and nitrobenzene), and corresponding ferric complexes [T(-R)PPFeCl] were synthesized in dimethylformamide. The above free base porphyrins were obtained in 30%–50% yields, metalation yields were up to 90% and total yields of ferric complexes were 27%–50%. Effects of reactive conditions, solvents and oxidants on yields of free base porphyrins were investigated and the relevant mechanism was discussed. Structures of the above porphyrin complexes were characterized by ultraviolet-visible (UV-Vis), infrared (IR) and far infrared (FIR) spectroscopy.

关键词: -substituted tetraphenylporphyrin     condensation     -substituted benzaldehyde     dimethylformamide     metalation    

Interactive effects of high-speed rail on nodal zones in a city: exploratory study on China

Guo LIU, Kunhui YE

《工程管理前沿(英文)》 2019年 第6卷 第3期   页码 327-335 doi: 10.1007/s42524-019-0051-2

摘要: The arrival of the high-speed rail (HSR) era has accelerated the pace of urban development, but its broad socioeconomic impact remains subject to intense debates. This research aims to propose a model for measuring the impact of HSR operation on HSR stations and the surrounding areas, which this research call the HSR-based nodal zone (HNZ). The proposed model is composed of two variables (i.e., transportation situation and vitality) and three subsystems (i.e., economic, societal, and environmental). Data were collected in China through questionnaire survey. Results indicate that the effects of HSR operation on HNZ are multidimensional, transportation vitality has an intermediary role in the effects, and the effects on the physical environment are negative. This study presents an early examination of the impact of HSR operation on the HSR stations and relevant areas and contributes new evidence to academic debates on the contribution of HSR to urban development. Accordingly, urban development policies should be built on the mechanism of HSR in driving the growth of HNZ.

关键词: high-speed rail     nodal zone     interactive effects     sustainable urbanization     China    

Development of a hydrodynamic model and the corresponding virtual software for dual-loop circulating

Shanwei Hu, Xinhua Liu

《化学科学与工程前沿(英文)》 2021年 第15卷 第3期   页码 579-590 doi: 10.1007/s11705-020-1953-6

摘要: Dual-loop circulating fluidized bed (CFB) reactors have been widely applied in industry because of their good heat and mass transfer characteristics and continuous handling ability. However, the design of such reactors is notoriously difficult owing to the poor understanding of the underlying mechanisms, meaning it has been heavily based on empiricism and stepwise experiments. Modeling the gas-solid CFB system requires a quantitative description of the multiscale heterogeneity in the sub-reactors and the strong coupling between them. This article proposed a general method for modeling multi-loop CFB systems by utilizing the energy minimization multiscale (EMMS) principle. A full-loop modeling scheme was implemented by using the EMMS model and/or its extension models to compute the hydrodynamic parameters of the sub-reactors, to achieve the mass conservation and pressure balance in each circulation loop. Based on the modularization strategy, corresponding interactive simulation software was further developed to facilitate the flexible creation and fast modeling of a customized multi-loop CFB reactor. This research can be expected to provide quantitative references for the design and scale-up of gas-solid CFB reactors and lay a solid foundation for the realization of virtual process engineering.

关键词: multi-loop circulating fluidized bed     mathematical modeling     energy minimization multiscale     virtual fluidization     mesoscale structure    

高铁客站建设动态互动管理理论研究

郑健

《中国工程科学》 2011年 第13卷 第8期   页码 31-35

摘要:

高速铁路及其客站建设是我国经济社会持续发展的必然产物,其建设与运营将促进区域经济一体化及都市圈和经济带的形成与发展,从而为经济社会发展提供动力与支撑。党的十六大以来,伴随着中国高铁的快速发展,高铁客站迎来了难得的发展机遇。截至2011年3月,共建成北京南、武汉、广州南、上海虹桥等139座高铁客站。笔者分析了高铁客站与经济社会发展之间的互动关系,结合大规模高铁客站建设实践,研究提出了以经济社会发展演化规律为指导的战略、项目集与项目的动态互动模型和管理理论,为科学制定我国高铁客站建设的战略目标体系及项目集、单项目管理提供了理论依据。

关键词: 高铁客站     经济社会     项目集     动态互动管理    

review on anammox process for the treatment of antibiotic-containing wastewater: Linking effects with corresponding

Jinjin Fu, Quan Zhang, Baocheng Huang, Niansi Fan, Rencun Jin

《环境科学与工程前沿(英文)》 2021年 第15卷 第1期 doi: 10.1007/s11783-020-1309-y

摘要: Abstract • Anammox is promising for nitrogen removal from antibiotic-containing wastewater. • Most antibiotics could inhibit the anammox performance and activity. • Antibiotic pressure promoted the increase in antibiotic resistance genes (ARGs). • Antibiotic-resistance mechanisms of anammox bacteria are speculated. Antibiotic is widely present in the effluent from livestock husbandry and the pharmaceutical industry. Antibiotics in wastewater usually have high biological toxicity and even promote the occurrence and transmission of antibiotic resistant bacteria and antibiotic resistance genes. Moreover, most antibiotic-containing wastewater contains high concentration of ammonia nitrogen. Improper treatment will lead to high risk to the surrounding environment and even human health. The anaerobic ammonium oxidation (anammox) with great economic benefit and good treatment effect is a promising process to remove nitrogen from antibiotic-containing wastewater. However, antibiotic inhibition has been observed in anammox applications. Therefore, a comprehensive overview of the single and combined effects of various antibiotics on the anammox system is conducted in this review with a focus on nitrogen removal performance, sludge properties, microbial community, antibiotic resistance genes and anammox-involved functional genes. Additionally, the influencing mechanism of antibiotics on anammox consortia is summarized. Remaining problems and future research needs are also proposed based on the presented summary. This review provides a better understanding of the influences of antibiotics on anammox and offers a direction to remove nitrogen from antibiotic-containing wastewater by the anammox process.

关键词: Anammox     Antibiotic     Mechanism     Inhibition    

Conceptual study on incorporating user information into forecasting systems

Jiarui HAN, Qian YE, Zhongwei YAN, Meiyan JIAO, Jiangjiang XIA

《环境科学与工程前沿(英文)》 2011年 第5卷 第4期   页码 533-542 doi: 10.1007/s11783-010-0246-6

摘要: The purpose of improving weather forecast is to enhance the accuracy in weather prediction. An ideal forecasting system would incorporate user-end information. In recent years, the meteorological community has begun to realize that while general improvements to the physical characteristics of weather forecasting systems are becoming asymptotically limited, the improvement from the user end still has potential. The weather forecasting system should include user interaction because user needs may change with different weather. A study was conducted on the conceptual forecasting system that included a dynamic, user-oriented interactive component. This research took advantage of the recently implemented TIGGE (THORPEX interactive grand global ensemble) project in China, a case study that was conducted to test the new forecasting system with reservoir managers in Linyi City, Shandong Province, a region rich in rivers and reservoirs in eastern China. A self-improving forecast system was developed involving user feedback throughout a flood season, changing thresholds for flood-inducing rainfall that were responsive to previous weather and hydrological conditions, and dynamic user-oriented assessments of the skill and uncertainty inherent in weather prediction. This paper discusses ideas for developing interactive, user-oriented forecast systems.

关键词: user-end information     user-oriented     interactive forecasting system     TIGGE (THORPEX interactive grand global ensemble)    

Liquefaction-induced damage evaluation of earth embankment and corresponding countermeasure

Linlin GU; Wei ZHENG; Wenxuan ZHU; Zhen WANG; Xianzhang LING; Feng ZHANG

《结构与土木工程前沿(英文)》 2022年 第16卷 第9期   页码 1183-1195 doi: 10.1007/s11709-022-0848-7

摘要: 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 of the considered embankment decreased gradually as the thickness of reinforcement was increased, although the reinforcement effect was no longer significant once the thickness exceeded 6 m.

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

基于交互式遗传算法模型的群体论证方法

宋东明,朱耀琴,吴慧中

《中国工程科学》 2009年 第11卷 第11期   页码 64-69

摘要:

针对综合集成研讨厅进行复杂决策问题研讨时,群体专家提出的众多定性意见最终如何实现收敛的问题,提出了基于交互式遗传算法模型的群体论证方法,使专家的群体思维与计算机技术紧密结合,达成共识。实践证明,该方法可以较好地获得复杂决策问题的优化解,且更符合实际的研讨论证过程。

关键词: 综合集成研讨厅     复杂决策问题     交互式遗传算法     性能指标论证    

INTERACTIVE KNOWLEDGE LEARNING BY ARTIFICIAL INTELLIGENCE FOR SMALLHOLDERS

《农业科学与工程前沿(英文)》 2023年 第10卷 第4期   页码 648-653 doi: 10.15302/J-FASE-2023505

摘要:

Enhancement of farming management relies heavily on enhancing farmer knowledge. In the past, both the direct learning approach and the personnel extension system for improving fertilization practices of smallholders has proven insufficiently effective. Therefore, this article proposes an interactive knowledge learning approach using artificial intelligence as a promising alternative. The system consists of two parts. The first is a dialog interface that accepts information from farmers about their current farming practices. The second part is an intelligent decision system, which categorizes the information provided by farmers in two categories. The first consists of on-farm constraints, such as fertilizer resources, split application times and seasons. The second comprises knowledge-based practices by farmers, such as nutrient in- and output balance, ratios of different nutrients and the ratios of each split nutrient amount to the total nutrient input. The interactive knowledge learning approach aims to identify and rectify incorrect practices in the knowledge-based category while considering the farmer’s available finance, labor, and fertilizer resources. Investigations show that the interactive knowledge learning approach can make a strong contribution to prevention of the overuse of nitrogen and phosphorus fertilizers, and mitigating agricultural non-point source pollution.

关键词: artificial intelligence     extension system     non-point source pollution control     smallholders     fertilization    

标题 作者 时间 类型 操作

Multi-objective optimization of a 3D vaneless diffuser based on fuzzy theory

GAO Chuang, GU Chuangang, WANG Tong, SHU Xinwei

期刊论文

Authors Notes Provided by Corresponding Authors

期刊论文

Author Notes Provided by Corresponding Authors

期刊论文

Author Notes Provided by Corresponding Authors

期刊论文

Thermally developing forced convection and the corresponding thermal stresses in a porous plate channel

YANG Xiao, LIU Xuemei

期刊论文

long-term model with consideration of uncertainties for deployment of distributed energy resources using interactive

Iraj AHMADIAN,Oveis ABEDINIA,Noradin GHADIMI

期刊论文

Synthesis of p -substituted tetraphenylporphyrins and corresponding ferric complexes with mixed-solvents

Zhicheng SUN, Yuanbin SHE, Rugang ZHONG,

期刊论文

Interactive effects of high-speed rail on nodal zones in a city: exploratory study on China

Guo LIU, Kunhui YE

期刊论文

Development of a hydrodynamic model and the corresponding virtual software for dual-loop circulating

Shanwei Hu, Xinhua Liu

期刊论文

高铁客站建设动态互动管理理论研究

郑健

期刊论文

review on anammox process for the treatment of antibiotic-containing wastewater: Linking effects with corresponding

Jinjin Fu, Quan Zhang, Baocheng Huang, Niansi Fan, Rencun Jin

期刊论文

Conceptual study on incorporating user information into forecasting systems

Jiarui HAN, Qian YE, Zhongwei YAN, Meiyan JIAO, Jiangjiang XIA

期刊论文

Liquefaction-induced damage evaluation of earth embankment and corresponding countermeasure

Linlin GU; Wei ZHENG; Wenxuan ZHU; Zhen WANG; Xianzhang LING; Feng ZHANG

期刊论文

基于交互式遗传算法模型的群体论证方法

宋东明,朱耀琴,吴慧中

期刊论文

INTERACTIVE KNOWLEDGE LEARNING BY ARTIFICIAL INTELLIGENCE FOR SMALLHOLDERS

期刊论文