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Management strategies of marine food resources under multiple stressors with particular reference of

Qisheng TANG

《农业科学与工程前沿（英文）》 2014年 第1卷 第1期   页码 85-90 doi: 10.15302/J-FASE-2014021

摘要：

In this study two main management strategies are discussed: one is to develop resource conservation-based capture fisheries, and the other is to develop environmentally friendly aquaculture. During the resource recovery period, the development of environmentally friendly aquaculture should be encouraged, especially in integrated multi-trophic aquaculture, which is adaptive, efficient and sustainable. For future development and better understanding the ecosystem, it is necessary to further strengthen basic research.

关键词： marine     ecosystem     management strategies     food resources     Yellow Sea    

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New insights into different surfactants’ impacts on sludge fermentation: Focusing on the particular metabolic

《环境科学与工程前沿（英文）》 2022年 第16卷 第8期 doi: 10.1007/s11783-022-1527-6

摘要：

• The promoting effects for VFA generation follow the order of APG>SDBS>HTAB.

关键词： Waste activated sludge (WAS)     Volatile fatty acids (VFA)     Surfactant types     Functional microorganisms     Metabolic activity upregulation    

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Aerodynamic challenges in span length of suspension bridges

XIANG Haifan, GE Yaojun

《结构与土木工程前沿（英文）》 2007年 第1卷 第2期   页码 153-162 doi: 10.1007/s11709-007-0016-0

摘要： The potential requirement of extreme bridge spans is firstly discussed according to horizontal clearances for navigation and economical construction of deep-water foundation. To ensure the technological feasibility of suspension bridges with longer spans, the static estimation of feasible span length is then made based on current material strength and weight of cables and deck. After the performances of the countermeasures for raising the aerodynamic stability are reviewed, a trial design of a 5 000 m suspension bridge, which is estimated as a reasonable limitation of span length, is finally conducted to respond to the tomorrow s challenge in span length of suspension bridges with the particular aspects, including dynamic stiffness, aerodynamic flutter and aerostatic stability.

关键词： requirement     reasonable limitation     challenge     particular     economical construction    

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Wavelet design for extracting weak fault feature based on lifting scheme

JIANG Hong-kai, WANG Zhong-sheng, HE Zheng-jia

《机械工程前沿（英文）》 2006年 第1卷 第2期   页码 199-203 doi: 10.1007/s11465-006-0009-z

摘要： Weak fault features of mechanical signals are usually immersed in noisy signals. A new wavelet method based on lifting scheme to match weak fault characteristics is proposed. In this method, an initial set of finite biorthogonal filters is modified by a lifting and dual lifting procedure alternately, and different lifting operators and dual lifting operators are obtained. The properties of the initial wavelet is improved, and the new wavelet with particular properties is designed. Simulation and engineering results confirm that the proposed method is better than other wavelet methods for extracting weak fault feature. Modulus maxima of the detail signal in every operation cycle are extracted, the position and time that weak signal singularity occurs are clearly found, and slight rub-impact fault caused by axis misalignment and rotor imbalance of a heavy oil catalytic cracking set are desirably extracted. extracted.

关键词： misalignment     imbalance     particular     position     mechanical    

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Progress in the research and development of p-xylene liquid phase oxidation process

WANG Lijun, CHENG Youwei, WANG Qinbo, LI Xi

《化学科学与工程前沿（英文）》 2007年 第1卷 第3期   页码 317-326 doi: 10.1007/s11705-007-0058-9

摘要： The process of -xylene liquid phase oxidation to produce purified terephthalic acid (PTA) involves a series of liquid phase radical reactions, chemical absorption, reactive crystallization, and evaporation. A commercial PTA production flow sheet includes a number of unit operations, which construct a complex process system. In this paper, a review of research and development (R&D) works on PTA process carried out in Zhejiang University during recent years is introduced. The works cover the oxidation and crystallization kinetics, gas-liquid mass transfer and evaporation, reactor modeling, database development, novel reactor design, process modeling, simulation, and optimization. The author emphasizes the viewpoint through this case study that chemical reaction engineering should be developed to process system engineering to extend its scope, and particular attention should be paid on reactor and process modeling.

关键词： development     -xylene     Zhejiang University     particular attention     viewpoint    

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Architecture-level particular risk modeling and analysis for a cyber-physical system with AADL

Ming-rui Xiao, Yun-wei Dong, Qian-wen Gou, Feng Xue, Yong-hua Chen,xiaomingrui@mail.nwpu.edu.cn,yunweidong@nwpu.edu.cn,gqwen@mail.nwpu.edu.cn,xue-feng@sgepri.sgcc.com.cn,chenyonghua@sgepri.sgcc.com.cn

《信息与电子工程前沿（英文）》 2020年 第21卷 第11期   页码 1535-1670 doi: 10.1631/FITEE.2000428

摘要： Cyber-physical systems (CPSs) are becoming increasingly important in safety-critical systems. (PRA) is an essential step in the safety assessment process to guarantee the quality of a system in the early phase of system development. Human factors like the physical environment are the most important part of particular risk assessment. Therefore, it is necessary to analyze the safety of the system considering human factor and physical factor. In this paper, we propose a new (PRM) to improve the modeling ability of the . An architecture-based PRA method is presented to support safety assessment for the AADL model of a cyber-physical system. To simulate the PRM with the proposed PRA method, model transformation from PRM to a deterministic and stochastic Petri net model is implemented. Finally, a case study on the power grid system of CPS is modeled and analyzed using the proposed method.
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标题 作者 时间 类型 操作

Management strategies of marine food resources under multiple stressors with particular reference of

Qisheng TANG

期刊论文

New insights into different surfactants’ impacts on sludge fermentation: Focusing on the particular metabolic

期刊论文

Aerodynamic challenges in span length of suspension bridges

XIANG Haifan, GE Yaojun

期刊论文

Wavelet design for extracting weak fault feature based on lifting scheme

JIANG Hong-kai, WANG Zhong-sheng, HE Zheng-jia

期刊论文

Progress in the research and development of p-xylene liquid phase oxidation process

WANG Lijun, CHENG Youwei, WANG Qinbo, LI Xi

期刊论文

Architecture-level particular risk modeling and analysis for a cyber-physical system with AADL

Ming-rui Xiao, Yun-wei Dong, Qian-wen Gou, Feng Xue, Yong-hua Chen,xiaomingrui@mail.nwpu.edu.cn,yunweidong@nwpu.edu.cn,gqwen@mail.nwpu.edu.cn,xue-feng@sgepri.sgcc.com.cn,chenyonghua@sgepri.sgcc.com.cn

期刊论文