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Smoothing ramp events in wind farm based on dynamic programming in energy internet
Jiang LI, Guodong LIU, Shuo ZHANG
《能源前沿(英文)》 2018年 第12卷 第4期 页码 550-559 doi: 10.1007/s11708-018-0593-8
The concept of energy internet has been gradually accepted, which can optimize the consumption of fossil energy and renewable energy resources. When wind power is integrated into the main grid, ramp events caused by stochastic wind power fluctuation may threaten the security of power systems. This paper proposes a dynamic programming method in smoothing ramp events. First, the energy internet model of wind power, pumped storage power station, and gas power station is established. Then, the optimization problem in the energy internet is transformed into a multi-stage dynamic programming problem, and the dynamic programming method proposed is applied to solve the optimization problem. Finally, the evaluation functions are introduced to evaluate pollutant emissions. The results show that the dynamic programming method proposed is effective for smoothing wind power and reducing ramp events in energy internet.
关键词: energy internet wind power ramp events dynamic programming
The most influential “Top 10 Events” in carbon neutrality and climate change in 2022
《能源前沿(英文)》 2023年 第17卷 第1期 页码 1-4 doi: 10.1007/s11708-023-0869-5
The effects of festivals and special events on city image design
LIU Yuan, CHEN Chong
《结构与土木工程前沿(英文)》 2007年 第1卷 第2期 页码 255-259 doi: 10.1007/s11709-007-0032-0
关键词: Visual Identity reversal transmission marketing Behavior Identity
《环境科学与工程前沿(英文)》 2021年 第15卷 第3期 doi: 10.1007/s11783-020-1334-x
• Light haze had little effect on bacterial communities.
关键词: Bacterial community Persistent fog and haze Particle size
Advances on immune-related adverse events associated with immune checkpoint inhibitors
Yong Fan, Yan Geng, Lin Shen, Zhuoli Zhang
《医学前沿(英文)》 2021年 第15卷 第1期 页码 33-42 doi: 10.1007/s11684-019-0735-3
关键词: cancer immunotherapy immune checkpoint inhibitors immune-related adverse events review
Key uncertainty events impacting on the completion time of highway construction projects
Alireza MOGHAYEDI, Abimbola WINDAPO
《工程管理前沿(英文)》 2019年 第6卷 第2期 页码 275-298 doi: 10.1007/s42524-019-0022-7
关键词: ANFIS construction time impact assessment highway project South Africa uncertainty
李鑫,Janet M Wang,唐卫清,吴慧中
《中国工程科学》 2008年 第10卷 第11期 页码 59-64
考虑实际电路中激励信号不理想对耦合互连线时延分析的影响,建立了斜阶跃信号激励下的互连线时延模型,提出了一种基于耦合RLC互连线的时延分析方法。该方法对已有的解耦算法进行了改进,将斜阶跃信号激励下的耦合互连线模型在线元分析阶段进行解耦,并结合二阶矩模型及改进的一阶模型对互连线的传递函数进行化简,进而给出耦合互连线的时延估计表达式。实验结果表明,互连线时延估计方法可以对耦合RLC互连线模型的时延进行有效评估。
E. Rohan Jayaratne, Buddhi Pushpawela, Lidia Morawska
《环境科学与工程前沿(英文)》 2016年 第10卷 第5期 doi: 10.1007/s11783-016-0862-x
关键词: Charged particles Cluster ions Secondary particles Environmental pollution
Xiaojing SHEN,Junying SUN,Xiaoye ZHANG,Yangmei ZHANG,Lu ZHANG,Ruxia FAN
《环境科学与工程前沿(英文)》 2016年 第10卷 第5期 doi: 10.1007/s11783-016-0833-2
关键词: New particle formation Regional background Cloud condensation nuclei Growth rate Formation rate
null
《医学前沿(英文)》 2018年 第12卷 第2期 页码 189-195 doi: 10.1007/s11684-017-0533-8
Obstructive sleep apnea syndrome (OSAS) increases the risk of post-surgery complications. This study uses Berlin Questionnaire (BQ) to identify Chinese adult surgical patients who are at a high risk of OSAS and to determine if the BQ could be used to detect potential high risk of adverse respiratory events in the post anesthesia care unit (PACU). Results indicated that only 11.4% of the patients were considered at a high risk of OSAS. Age and body mass index are the key factors for the risk of OSAS prevalence in China and also gender specific. Furthermore, the incidence of adverse respiratory events in the PACU was higher in patients with high risk of OSAS than others (6.8% vs. 0.9%, <0.001). They also stayed longer than others in the PACU (95±28 min vs. 62±19 min, <0.001). Age, high risk for OSAS, and smoking were independent risk factors for the occurrence of adverse respiratory events in the PACU. The BQ may be adopted as a screening tool for anesthesiologists in China to identify patients who are at high risk of OSAS and determine the potential risk of developing postoperative respiratory complications in the PACU.
关键词: obstructive sleep apnea Berlin Questionnaire Chinese surgical patients adverse respiratory event
丁一汇, 吴萍, 柳艳菊, 宋亚芳
《工程(英文)》 2017年 第3卷 第2期 页码 266-271 doi: 10.1016/J.ENG.2017.01.009
本文是近期针对华北地区霾的长期变化特征持续强霾事件发生的环境和动力条件方面研究的个结。华北地区近50 年来霾日呈现明显的上升趋势,尤其是进入21 世纪以来,霾日增加明显同时,持续性霾事件的发生频次也呈现类似的上升趋势华北地区霾污染事件频发可以归因于不利的气象环境条件和人为排放的大量污染物的共同作用。气象环境条件方面主要表现为:在气变暖的大背景下,华北地区冬季气温的持续上升、地面风速的减小以及大气稳定度的加强均对霾日的增加有显著影响。厄尔尼诺(El Nino) 年冬季,东亚大槽偏弱,冷空气活动弱,华北地区盛行异常偏南风,有利于霾天气的形成;而拉尼娜(La Nina) 年冬季,东亚大槽偏强,冷空气活动强,华北地区盛行异常偏北风,不利于霾天气的形成华北地区持续强霾事件主要发生在平直西风型和高压脊型两类环流形势下,对流层中低层为持续深厚的下沉气流,使大气边界层厚度减少污染物扩散能力减弱,有利于霾天气的维持和加剧。
翟盘茂,刘静
《中国工程科学》 2012年 第14卷 第9期 页码 55-63
首先概括极端天气气候事件以及“气候极值”的相关定义,并把极端事件分为单要素的极端事件、与天气现象有关的极端事件、多要素极端事件和极端气候事件。在此基础上,总结上述几类极端事件在气候变暖背景下的变化趋势及影响。指出气候变暖背景下我国长江中下游区域强降水事件更趋频繁,我国东部地区高温热浪天气更为明显;东北华北地区干旱趋势增加,尤其在20世纪末期和21世纪初期最为明显;近10年来西南地区干旱频繁发生。为减轻日益增加的重大气象灾害的损失,我国有必要加强高影响极端事件的监测、预警能力建设,同时还必须根据极端天气气候事件变化规律加强工程性防御措施,以防范和应对强降水引发的洪涝灾害和城市渍涝,以及与降水持续不足有关的重大干旱和高温热浪等气象灾害。
Homayoun EBRAHIMIAN,Bahman TAHERI,Nasser YOUSEFI
《能源前沿(英文)》 2015年 第9卷 第4期 页码 426-432 doi: 10.1007/s11708-015-0376-4
关键词: practical constraints of units pollution function inlet steam valve up-ramp rate of units improved ABC algorithm
Multi-target combinatory strategy to overcome tumor immune escape
《医学前沿(英文)》 2022年 第16卷 第2期 页码 208-215 doi: 10.1007/s11684-022-0922-5
关键词: immune checkpoints multi-target immune escape immune-related adverse events combination therapy
null
《医学前沿(英文)》 2017年 第11卷 第1期 页码 20-31 doi: 10.1007/s11684-016-0493-4
To date, gastric carcinoma (GC) is one of the common and fatal digestive malignancies worldwide. The prognosis of GC is not always satisfactory because of late diagnosis. Scholars are keen on discovering novel accurate and economical biomarkers in body liquids for GC screening to detect and evaluate the lesion before the results of imaging techniques are obtained. While traditional serum assays have limited sensitivity and specificity, gastrointestinal juice may provide relevant specific biomarkers because of its close contact with the tumor. Herein, the current progress in the relationship between gastrointestinal fluid analyses and GC is systematically and comprehensively reviewed. The detection of gastric juice pH, fluorescence spectrum, cytology, Helicobacter pylori-associated markers, nitrosamines, conventional tumor markers, amino acids, proteomics, microRNAs, long noncoding RNAs, protein-coding genes, vitamin C, etc., and combination tests of different category markers could provide important diagnostic and prognostic clues for gastrointestinal diseases. Particularly, early GC may be efficiently screened using gastric juice. Gastrointestinal fluid examination could also predict the adverse effects of postgastrectomy, such as pancreatic leakage, fistula, and abscess. Gastric fluid markers should be further studied to reveal the early predicators of malignancy and complications. The methods for obtaining the samples of gastrointestinal juice with minimum incision should also be comprehensively investigated.
关键词: gastrointestinal fluid gastric carcinoma biomarker diagnosis prognosis gastrectomy adverse events
标题 作者 时间 类型 操作
Smoothing ramp events in wind farm based on dynamic programming in energy internet
Jiang LI, Guodong LIU, Shuo ZHANG
期刊论文
Characterization of bacterial communities during persistent fog and haze events in the Qingdao coastal
期刊论文
Advances on immune-related adverse events associated with immune checkpoint inhibitors
Yong Fan, Yan Geng, Lin Shen, Zhuoli Zhang
期刊论文
Key uncertainty events impacting on the completion time of highway construction projects
Alireza MOGHAYEDI, Abimbola WINDAPO
期刊论文
evolution of charged and neutral nanoparticle concentrations during atmospheric new particle formation events
E. Rohan Jayaratne, Buddhi Pushpawela, Lidia Morawska
期刊论文
Key features of new particle formation events at background sites in China and their influence on cloud
Xiaojing SHEN,Junying SUN,Xiaoye ZHANG,Yangmei ZHANG,Lu ZHANG,Ruxia FAN
期刊论文
high risk of OSAS using the Berlin Questionnaire to detect potential high risk of adverse respiratory events
null
期刊论文
Optimal operation of energy at hydrothermal power plants by simultaneous minimization of pollution and costs using improved ABC algorithm
Homayoun EBRAHIMIAN,Bahman TAHERI,Nasser YOUSEFI
期刊论文