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The Braess Paradox in Dynamic Traffic [article]

Dingyi Zhuang, Yuzhu Huang, Vindula Jayawardana, Jinhua Zhao, Dajiang Suo, Cathy Wu
2022 arXiv   pre-print
The Braess's Paradox (BP) is the observation that adding one or more roads to the existing road network will counter-intuitively increase traffic congestion and slow down the overall traffic flow. Previously, the existence of the BP is modeled using the static traffic assignment model, which solves for the user equilibrium subject to network flow conservation to find the equilibrium state and distributes all vehicles instantaneously. Such approach neglects the dynamic nature of real-world
more » ... c, including vehicle behaviors and the interaction between vehicles and the infrastructure. As such, this article proposes a dynamic traffic network model and empirically validates the existence of the BP under dynamic traffic. In particular, we use microsimulation environment to study the impacts of an added path on a grid network. We explore how the network flow, vehicle travel time, and network capacity respond, as well as when the BP will occur.
arXiv:2203.03726v1 fatcat:qa2eqn3muzacjnhkocwcw4aju4

Engineering Microbial Consortia towards Bioremediation

Xianglong Li, Shanghua Wu, Yuzhu Dong, Haonan Fan, Zhihui Bai, Xuliang Zhuang
2021 Water  
Bioremediation is a sustainable remediation technology as it utilizes microorganisms to convert hazardous compounds into their less toxic or non-toxic constituent elements. This technology has achieved some success in the past decades; however, factors involving microbial consortia, such as microbial assembly, functional interactions, and the role of member species, hinder its development. Microbial consortia may be engineered to reconfigure metabolic pathways and reprogram social interactions
more » ... o get the desired function, thereby providing solutions to its inherent problems. The engineering of microbial consortia is commonly applied for the commercial production of biomolecules. However, in the field of bioremediation, the engineering of microbial consortia needs to be emphasized. In this review, we will discuss the molecular and ecological mechanisms of engineering microbial consortia with a particular focus on metabolic cross-feeding within species and the transfer of metabolites. We also discuss the advantages and limitations of top-down and bottom-up approaches of engineering microbial consortia and their applications in bioremediation.
doi:10.3390/w13202928 fatcat:drqm4mgsn5ch3bejusgq3ou4ky

Analysis and Treatment of 660 MW Ultra Supercritical Units Vibration

Hankun Bing, Yuzhu Zhao, Zhengfeng Wu, Shuai Chen, C.-H. Weng, R. Weerasinghe, J. Wu
2019 E3S Web of Conferences  
This paper analyses the excessive vibration of the bearing caused by the high-medium pressure rotor bending of the steam turbine, provides a basis for the weighted and balanced bending scheme of the high-medium pressure rotors of the 660MW ultra-supercritical unit and also provides reference for the same type of unit.
doi:10.1051/e3sconf/201911802057 fatcat:jvcowupvhbegjket76udh4ansy

Research on Equipment State Management Mode Based on "League System"

Hankun Bing, Yuzhu Zhao, Zhengfeng Wu, Guangyao Ma, C.-H. Weng, R. Weerasinghe, J. Wu
2019 E3S Web of Conferences  
Under the background of the decline in the hours of operation of thermal power generation equipment, based on Internet technology, a new mode of equipment state management, which integrates equipment responsibility to personnel, continuous tracking and updating of equipment status, and integration of test analysis and processing, A new idea of equipment maintenance for technology sharing, data sharing, and experience sharing has been realized. It has realized the orientation control of the
more » ... work of the professional technicians of power generation enterprises, and at the same time, the equipment status tracking based on the equipment status is further exploration for the field of state maintenance.
doi:10.1051/e3sconf/201911802037 fatcat:22sxlbcv2vgmxejkqfl566hjma

Quantitative Analysis of Operating Economical Performance by Valve Leakage in Bypass System

Dongxing Zhang, Yuzhu Zhao, Zhengfeng Wu, Xi Wu
2019 IOP Conference Series: Earth and Environment  
In this paper, the influence of steam leakage of the control valve in bypass system on unit operating economy is analysed. Through quantitative analysis, the formulas for calculating the influence of the steam leakage of control valves in high-pressure, medium-pressure and low-pressure bypass systems on the parameters of unit work and heat absorption are obtained. In the end, combined with the design data, the thermal economy of 1000MW double reheat unit is analyzed in view of the internal
more » ... ge of control valve in high-pressure, mediumpressure and low-pressure bypass system.
doi:10.1088/1755-1315/295/3/032091 fatcat:zhjx64jzzvdtnpqudcps5g3obm

Trust in B2B Commerce: Taxonomy and Roles

Yu Andy Wu, Yuzhu Li, Carol S. Saunders
2006 Americas Conference on Information Systems  
Sensing a lag in B2B trust research behind its B2C counterpart, Saunders, Wu, Li, and Weisfeld (2004) conducted a literature review.  ... 
dblp:conf/amcis/WuLS06 fatcat:vkt7mjnzwnagtbjfyn4bxm7ole

Recent Advances in Bio-Based Smart Active Packaging Materials

Tingyu Song, Sheng Qian, Tiantong Lan, Yuzhu Wu, Jingsheng Liu, Hao Zhang
2022 Foods  
The shortage of oil resources is currently a global problem. The use of renewable resources instead of non-renewable ones has become a hot topic of research in the eyes of scientists. In the food industry, there is a lot of interest in bio-based smart active packaging that meets the concept of sustainability and ensures safety. The packaging has antibacterial and antioxidant properties that extend the shelf life of food. Its ability to monitor the freshness of food in real time is also
more » ... l to consumers' judgement of food safety. This paper summarises the main raw materials for the preparation of bio-based smart active packaging, including proteins, polysaccharides and composite materials. The current status of the preparation method of bio-based smart active packaging and its application in food preservation is summarised. The future development trend in the field of food packaging is foreseen, so as to provide a reference for the improvement of bio-based smart active packaging materials.
doi:10.3390/foods11152228 pmid:35892814 pmcid:PMC9331990 fatcat:2mqbb6pmcbdxbpgqs4cm2ayoyq

Analysis and Treatment of Abnormal Vibration of a Gas Turbine Generator Set

Hankun Bing, Yuzhu Zhao, Zhengfeng Wu, Le Pang, C.-H. Weng, R. Weerasinghe, J. Wu
2019 E3S Web of Conferences  
In this paper, The turn-to-turn short-circuit fault is accurately judged by the vibration monitoring of a gas turbine generator set. The abnormal conditions in the post-processing process are analyzed and summarized, and the conclusion is verified by the disintegration.The analysis method of abnormal response in the process of dynamic balance of units is determined, which provides a reference for effect evaluation and scheme determination for the on-site dynamic balance treatment of the same type unit.
doi:10.1051/e3sconf/201911802038 fatcat:aznso6ij2nhbdaqdlew45n2g7e

Beading Mechanism and Performance of Porous Steel Slag Microbead Abrasive

Jingjing Pei, Yuzhu Zhang, Hongwei Xing, Qianqian Ren, Wenqing Huo, Jinhu Wu
2021 Crystals  
The use of the gas-quenching process for preparing porous bead slag abrasive was investigated in this paper. An X-ray diffractometer, field emission scanning electron microscope, mercury intrusion porosimetry, and stereo microscope were used to analyze the microbead forming mechanism, pore structure, acid–alkali resistance, and polishing properties of porous steel slag microbead abrasives. Results show that the porous steel slag abrasives present a mono-disperse spherical shape with a hard
more » ... and the porosity is 42.36%. The thermodynamic fractal model indicates that the fractal dimension of the abrasive is 2.226, which shows its simple pore structure. The sample has better chemical stability in the polishing fluid than in water, acid, and alkali solution. Therefore, aluminum and copper alloys are used as substrates for polishing tests. The results indicate that the abrasives could effectively improve the quality of the workpiece surface and the polishing efficiency for aluminum alloy was higher than that for copper alloy.
doi:10.3390/cryst11111377 fatcat:mglleau2crdermvwy253fthprm

Asymmetric Boration of para-Quinone Methides Catalyzed by N-Heterocyclic Carbene

Yuzhu Wu, Panpan Shen, Wenzeng Duan, Yudao Ma
2022 Youji huaxue  
( a 山东大学化学与化工学院 济南 250100)
doi:10.6023/cjoc202111041 fatcat:xba6p5sxg5cgvncoqfce4brgne

Generalizing linguistic distributions in hesitant decision context

Guiqing Zhang, Yuzhu Wu, Yucheng Dong
2017 International Journal of Computational Intelligence Systems  
[10] and Wu and Dong [35] discussed the cases of LDs with incomplete information.  ...  In Wu and Dong [35] , LD was generalized to incomplete linguistic distribution as Definition 6.  ... 
doi:10.2991/ijcis.2017.10.1.65 fatcat:qubpztk75fgnxm2l2gi6yhuu6u

Silylative aromatization of p-quinone methides under metal and solvent free conditions

Tingting Li, Yuzhu Wu, Wenzeng Duan, Yudao Ma
2021 RSC Advances  
A novel and efficient synthetic protocol is reported for the synthesis of benzyl silanes from readily available silylborane and p-quinone methides using 5% cesium carbonate under solvent-free conditions.
doi:10.1039/d1ra03193g pmid:35480172 pmcid:PMC9033227 fatcat:lrfvkeoeobczljpvzxmez7sevi

Influencing Factors Analysis on Performance and Structural Design of Horizontal Flow Separator for Urban Garbage

Sun Pengwen, Yan Jinshun, Zhao Yuzhu, Wu Hai, Xia Xiaohua
2012 Energy Procedia  
Prefect fore-separation technology is the precondition and key to realize garbage synthesis treatment and increase resource utilization ratio. To the lower purity quotient and efficiency of plastic and paper separation, main factors influencing performance of horizontal flow separation are analyzed in detail, and reasonable processing and design parameter are studyed in this paper. Horizontal flow separator of urban garbage that structure is reasonable and parameter can be adjusted is designed.
more » ... Technology reference and support is provided to production of urban garbage treatment factory.
doi:10.1016/j.egypro.2011.12.1070 fatcat:se6hsg3fbfhg5fnggjukgntbgy

The Association of Pre-S/S Gene Mutations and Hepatitis B Virus Vertical Transmission

Yuzhu Yin, Peizhen Zhang, Zhangmin Tan, Jin Zhou, Lingling Wu, Hongying Hou
2016 Hepatitis Monthly  
Footnotes Authors' Contribution: Yuzhu Yin and Peizhen Zhang contributed equally to this work.  ...  manuscript; Zhangmin Tan, acquisition of data; Jin Zhou, acquisition of data; Lingling Wu, statistical analysis; Hongying Hou, study supervision.  ... 
doi:10.5812/hepatmon.32160 pmid:27226799 pmcid:PMC4876664 fatcat:dvhr5ez2djgq5ftl44aee4luiq

Limit Drainage of Separated Tunnel Based on Ecological Groundwater Table: A Case Study

Jianyou Yu, Shensheng Ge, Lingchao Hou, Yiteng Zhang, Yuzhu Liu, Yu Wu
2021 Advances in Civil Engineering  
After the excavation of the tunnel in water-rich regions, the groundwater is continuously discharged into the tunnel. Excessive discharge will cause the groundwater table to drop, which will destroy the normal growth of vegetation and ecological balance. In order to protect the ecological environment, the key is to develop an effective method to determine the tunnel drainage. In this paper, a method for calculating the limit drainage of the tunnel is proposed based on area-well method and the
more » ... ncept of ecological groundwater table in ecology and agronomy. Some conclusions are drawn as follows. (1) When the ecological groundwater table is constant, with the increase of groundwater discharge, the drainage influence range of the tunnel decreases, the rainfall supplement quantity W t within the drainage influence range decreases, and the total groundwater discharge quantity Qt also decreases gradually. Since the decreasing rate of W t is greater than that of Qt, there is a unit drainage that makes the total groundwater discharge equal to rainfall supplement. (2) A separated tunnel under construction in Fuzhou City is taken as an example; the limit drainage q0 of the separated double tunnel is 0.48 m3/(m·d) considering ecological groundwater table.
doi:10.1155/2021/2669924 fatcat:cjxplgez5na3fk7zx3r4jpdip4
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