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期刊论文 22

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2023 4

2022 2

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关键词

保序 2

逆序 2

MCDM决策 1

一般秩相关系数;多变量分析;预测指标;斯皮尔曼等级相关系数 1

决策分析 1

剧毒强腐蚀 1

变量选择 1

多元回归方法 1

安全开发 1

富水性 1

广域电磁法 1

抄袭检测;源检索;查询生成;机器学习;排序学习 1

拟流场法 1

排序 1

无关方案独立性 1

模糊 1

气田开发 1

污染事故 1

波束形成;广义秩;低复杂度;正定约束;模型失配 1

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Response of bacterial communities to short-term pyrene exposure in red soil

Jingjing PENG, Hong LI, Jianqiang SU, Qiufang ZHANG, Junpeng RUI, Chao CAI

《环境科学与工程前沿(英文)》 2013年 第7卷 第4期   页码 559-567 doi: 10.1007/s11783-013-0501-8

摘要: Pyrene, a representative polycyclic aromatic hydrocarbon (PAH) compound produced mainly from incomplete combustion of fossil fuels, is hazardous to ecosystem health. However, long-term exposure studies did not detect any significant effects of pyrene on soil microorganism. In this study, short-term microcosm experiments were conducted to identify the immediate effect of pyrene on soil bacterial communities. A freshly-collected pristine red soil was spiked with pyrene at 0, 10, 100, 200, and 500 mg·kg and incubated for one day and seven days. The bacterial communities in the incubated soils were analyzed using 16S rRNA sequencing and terminal restriction fragment length polymorphism (T-RFLP) methods. The results revealed high bacterial diversity in both unspiked and pyrene-spiked soils. Only at the highest pyrene-spiking rate of 500 mg·kg , two minor bacteria groups of the identified 14 most abundant bacteria groups were completely suppressed. Short-term exposure to pyrene resulted in dominance of Proteobacteria in soil, followed by Acidobacteria, Firmutes, and Bacteroidetes. Our findings showed that bacterial community structure did respond to the presence of pyrene but recovered rapidly from the perturbation. The intensity of impact and the rate of recovery showed some pyrene dosage-dependent trends. Our results revealed that different levels of pyrene may affect the bacterial community structure by suppressing or selecting certain groups of bacteria. It was also found that the bacterial community was most susceptible to pyrene within one day of the chemical addition.

关键词: pyrene     bacterial communities     terminal restriction fragment length polymorphism     short-term exposure     rank-abundance plots    

线性分配方法的逆序问题研究

章玲,周德群

《中国工程科学》 2008年 第10卷 第2期   页码 50-53

摘要:

指出了线性分配方法的决策结果可能产生逆序,然后提出排序向量和相对分配比 的 概念,以分析线性分配方法决策结果产生逆序的原因,并在此基础上构建顺序线性分配方法 ,最后通过算例验证顺序线性分配方法决策结果的保序性。

关键词: 决策分析     线性分配方法     逆序     保序    

Using heterogeneous patent network features to rank and discover influential inventors

Yong-ping DU,Chang-qing YAO,Nan LI

《信息与电子工程前沿(英文)》 2015年 第16卷 第7期   页码 568-578 doi: 10.1631/FITEE.1400394

摘要: Most classic network entity sorting algorithms are implemented in a homogeneous network, and they are not applicable to a heterogeneous network. Registered patent history data denotes the innovations and the achievements in different research fields. In this paper, we present an iteration algorithm called inventor-ranking, to sort the influences of patent inventors in heterogeneous networks constructed based on their patent data. This approach is a flexible rule-based method, making full use of the features of network topology. We sort the inventors and patents by a set of rules, and the algorithm iterates continuously until it meets a certain convergence condition. We also give a detailed analysis of influential inventor’s interesting topics using a latent Dirichlet allocation (LDA) model. Compared with the traditional methods such as PageRank, our approach takes full advantage of the information in the heterogeneous network, including the relationship between inventors and the relationship between the inventor and the patent. Experimental results show that our method can effectively identify the inventors with high influence in patent data, and that it converges faster than PageRank.

关键词: Heterogeneous patent network     Influence     Rule-based ranking    

A critical review of ash slagging mechanisms and viscosity measurement for low-rank coal and bio-slags

Md Tanvir ALAM, Baiqian DAI, Xiaojiang WU, Andrew HOADLEY, Lian ZHANG

《能源前沿(英文)》 2021年 第15卷 第1期   页码 46-67 doi: 10.1007/s11708-020-0807-8

摘要: Gasification or combustion of coal and biomass is the most important form of power generation today. However, the use of coal/biomass at high temperatures has an inherent problem related to the ash generated. The formation of ash leads to a problematic phenomenon called slagging. Slagging is the accumulation of molten ash on the walls of the furnace, gasifier, or boiler and is detrimental as it reduces the heat transfer rate, and the combustion/gasification rate of unburnt carbon, causes mechanical failure, high-temperature corrosion and on occasions, superheater explosions. To improve the gasifier/combustor facility, it is very important to understand the key ash properties, slag characteristics, viscosity and critical viscosity temperature. This paper reviews the content, compositions, and melting characteristics of ashes in differently ranked coal and biomass, and discusses the formation mechanism, characteristics, and structure of slag. In particular, this paper focuses on low-rank coal and biomass that have been receiving increased attention recently. Besides, it reviews the available methodologies and formulae for slag viscosity measurement/prediction and summarizes the current limitations and potential applications. Moreover, it discusses the slagging behavior of different ranks of coal and biomass by examining the applicability of the current viscosity measurement methods to these fuels, and the viscosity prediction models and factors that affect the slag viscosity. This review shows that the existing viscosity models and slagging indices can only satisfactorily predict the viscosity and slagging propensity of high-rank coals but cannot predict the slagging propensity and slag viscosity of low-rank coal, and especially biomass ashes, even if they are limited to a particular composition only. Thus, there is a critical need for the development of an index, or a model or even a measurement method, which can predict/measure the slagging propensity and slag viscosity correctly for all low-rank coal and biomass ashes.

关键词: slag     viscosity     biomass     low-rank coal     combustion     gasification    

应用规范化公式的MCDM保序研究

章玲,周德群,李洪伟,朱佩枫

《中国工程科学》 2006年 第8卷 第12期   页码 85-88

摘要:

规范化公式的应用会破坏方案之间的独立性,导致逆序的产生。提出了两种改进规范化公式的方法以消除逆序,并以加权算术平均(WAA)集结算子的多属性决策分析(MCDM)为例验证了所提出方法的合理性和有效性。改进后的规范化公式不仅可以应用于WAA算子,还可以应用到其他类似的决策算子中。改进后规范化公式的应用可以降低和消除规范化公式对无关方案独立性的影响,使得MCDM决策过程更加合理、科学。

关键词: MCDM决策     规范化公式     无关方案独立性     保序     逆序    

The CatMath: an online predictive platform for thermal + electrocatalysis

《化学科学与工程前沿(英文)》 2023年 第17卷 第12期   页码 2156-2160 doi: 10.1007/s11705-023-2371-3

摘要: The catalytic volcano activity models are the quantified and visualized tools of the Sabatier principle for heterogeneous catalysis, which can depict the intrinsic activity optima and trends of a catalytic reaction as a function of the reaction descriptors, i.e., the bonding strengths of key reaction species. These models can be derived by microkinetic modeling and/or free energy changes in combination with the scaling relations among the reaction intermediates. Herein, we introduce the CatMath—an online platform for generating a variety of common and industrially important thermal + electrocatalysis. With the CatMath, users can request the volcano models for available reactions and analyze their materials of interests as potential catalysts. Besides, the CatMath provides the function of the online generation of Surface Pourbaix Diagram for surface state analysis under electrocatalytic conditions, which is an essential step before analyzing the activity of an electrocatalytic surface. All the model generation and analysis processes are realized by cloud computing via a user-friendly interface.

关键词: CatMath     catalysis     volcano activity plots     Surface Pourbaix Diagrams     online platform    

Dihydroartemisinin increased the abundance of by YAP1 depression that sensitizes hepatocellular carcinoma

《医学前沿(英文)》 2023年 第17卷 第4期   页码 729-746 doi: 10.1007/s11684-022-0978-2

摘要: The effect of anti-programmed cell death 1 (anti-PD-1) immunotherapy is limited in patients with hepatocellular carcinoma (HCC). Yes-associated protein 1 (YAP1) expression increased in liver tumor cells in early HCC, and Akkermansia muciniphila abundance decreased in the colon. The response to anti-PD-1 treatment is associated with A. muciniphila abundance in many tumors. However, the interaction between A. muciniphila abundance and YAP1 expression remains unclear in HCC. Here, anti-PD-1 treatment decreased A. muciniphila abundance in the colon, but increased YAP1 expression in the tumor cells by mice with liver tumors in situ. Mechanistically, hepatocyte-specific Yap1 knockout (Yap1LKO) maintained bile acid homeostasis in the liver, resulting in an increased abundance of A. muciniphila in the colon. Yap1 knockout enhanced anti-PD-1 efficacy. Therefore, YAP1 inhibition is a potential target for increasing A. muciniphila abundance to promote anti-PD-1 efficacy in liver tumors. Dihydroartemisinin (DHA), acting as YAP1 inhibitor, increased A. muciniphila abundance to sensitize anti-PD-1 therapy. A. muciniphila by gavage increased the number and activation of CD8+ T cells in liver tumor niches during DHA treatment or combination with anti-PD-1. Our findings suggested that the combination anti-PD-1 with DHA is an effective strategy for liver tumor treatment.

关键词: hepatocellular carcinoma     YAP1     Akkermansia muciniphila     anti-PD-1     dihydroartemisinin     bile acid    

一种直观的一般秩相关系数 Research Articles

Divya PANDOVE, Shivani GOEL, Rinkle RANI

《信息与电子工程前沿(英文)》 2018年 第19卷 第6期   页码 699-711 doi: 10.1631/FITEE.1601549

摘要: 相关分析是研究数据模式和预测的有效机制。在看似无关的数据中建立相关性可得到许多有趣发现。提出一种算法,用于量化相关性理论并得出一个直观且更精确的相关系数。为计算配对值之间相关性,提出一项预测指标,称为一般秩相关系数。其满足预测指标的5个基本标准:样本规模的独立性、数值介于−1与1之间、测量单调性程度、对异常值不敏感性、直观演示。此外,使用实时数据集和随机数模拟实验对该指标进行验证。同时,展示了所提方程的数学推导过程,并与斯皮尔曼等级相关系数比较。结果表明,该指标在所有预测度量标准上均优于现存指标。

关键词: 一般秩相关系数;多变量分析;预测指标;斯皮尔曼等级相关系数    

The abundance, characteristics and diversity of microplastics in the South China Sea: Observation around

Hongzhe Chen , Sumin Wang , Huige Guo , Yunlong Huo , Hui Lin , Yuanbiao Zhang

《环境科学与工程前沿(英文)》 2022年 第16卷 第1期   页码 9-9 doi: 10.1007/s11783-021-1443-1

摘要: Surrounded by emerging markets with considerable plastic consumption, the South China Sea has been a focus area of microplastic research. A survey on the floating microplastics (>0.3 mm) and microplastics ingested by fish and mollusks was conducted around three remote islands here. Compared with the results from several previous studies, a high abundance of floating microplastics (with a median of 1.9 × 105 items/km2 or 0.7 items/m3) was observed, revealing another “hot spot” for microplastics. Polyolefin, especially polypropylene, was the main component. The diversity index and evenness index were calculated and evaluated based on the composition of microplastics. The characteristic peaks of Raman spectra concerning pigmented microplastics were provided. Transparent sheets/films were predominant in the water sample, which was quite different from a similar study in this sea area (8.9% for film), and only 16.4% of floating microplastics (>0.3 mm) were fibers/lines, implying that the main sources of floating microplastics (>0.3 mm) might be household/agricultural consumption activities. The transparent fiber/line was also dominant in organisms. It is suggested that the main sources of microplastics ingested by organisms might be both fabric fibers and fishing/aquaculture.

Abundance, spatial distribution, and physical characteristics of microplastics in stormwater detention

《环境科学与工程前沿(英文)》 2023年 第17卷 第10期 doi: 10.1007/s11783-023-1724-y

摘要: Despite extensive research on microplastics (MP) in marine environments, little is known about MP abundance and transport in terrestrial systems. There is, therefore, still little understanding of the main mechanisms driving the substantial transport of MP across different environmental compartments. Storm events can transport MP beyond boundaries, such as from the land to groundwater or the ocean, as has already been discovered for organic carbon transport. Urban stormwater detention ponds are suitable environments to study the impact of stormwater on the environmental fate and transport of MP. Herein, we investigate the longitudinal and vertical distribution of MP within two detention ponds with different physical characteristics. Soil samples were collected at various locations and from multiple depths (surface and subsurface layers) for measuring MP concentrations using fluorescence microscopy. Our findings show that MP are retained more near the inlet of the ponds, and MP of larger sizes were found more abundantly near inlets than outlets. We also found that MP mass and sizes decrease from surface soil to subsurface soil. In the pond, where vegetation (grass root network) was more considerable, MP were found more evenly distributed along the depth. In terms of shape, the fragments were the most abundant MP shape.

关键词: Microplastic     Environmental transport     Soil pollution     Stormwater     Detention ponds    

重大环境污染事故风险模糊排序方法研究

熊德琪,陈钢,李琼

《中国工程科学》 2001年 第3卷 第8期   页码 46-50

摘要:

根据工厂重大环境污染事故风险评价呈多指标多层次结构,且风险性排序具有相对性和模糊性的特点,运用模糊集理论中的权距离和隶属度概念,并将最小二乘法加以拓展,提出能够有效解决此类多指标多层次排序或优选问题的模糊排序方法。用于对大连市4家重点工厂的事故风险性进行评价和排序,评价结果合理、准确。

关键词: 污染事故     风险     排序     评价     模糊    

A rank-based multiple-choice secretary algorithm for minimising microgrid operating cost under uncertainties

《能源前沿(英文)》 2023年 第17卷 第2期   页码 198-210 doi: 10.1007/s11708-023-0874-8

摘要: The increasing use of distributed energy resources changes the way to manage the electricity system. Unlike the traditional centralized powered utility, many homes and businesses with local electricity generators have established their own microgrids, which increases the use of renewable energy while introducing a new challenge to the management of the microgrid system from the mismatch and unknown of renewable energy generations, load demands, and dynamic electricity prices. To address this challenge, a rank-based multiple-choice secretary algorithm (RMSA) was proposed for microgrid management, to reduce the microgrid operating cost. Rather than relying on the complete information of future dynamic variables or accurate predictive approaches, a lightweight solution was used to make real-time decisions under uncertainties. The RMSA enables a microgrid to reduce the operating cost by determining the best electricity purchase timing for each task under dynamic pricing. Extensive experiments were conducted on real-world data sets to prove the efficacy of our solution in complex and divergent real-world scenarios.

关键词: energy management systems     demand response     scheduling under uncertainty     renewable energy sources     multiple-choice secretary algorithm    

Impacts of n-alkane concentration on soil bacterial community structure and alkane monooxygenase genes abundance

Yueqiao Liu, Aizhong Ding, Yujiao Sun, Xuefeng Xia, Dayi Zhang

《环境科学与工程前沿(英文)》 2018年 第12卷 第5期 doi: 10.1007/s11783-018-1064-5

摘要:

Soil microbial community is not significantly shaped by alkane concentrations

Alkane concentrations alter dominant alkane degraders in soils

Different alkanes are preferentially degraded at different contamination level

Different types of alkane monooxygenase genes responsible for alkane degradation

关键词: Petroleum hydrocarbon contaminated site     n-alkane contamination level     n-alkane biodegradation     Soil bacterial community     Alkane degraders     Alkane-monooxygenase genes    

基于正定约束广义秩信号模型的低复杂度稳健自适应算法 Article

Yu-tang ZHU,Yong-bo ZHAO,Jun LIU,Peng-lang SHUI

《信息与电子工程前沿(英文)》 2016年 第17卷 第11期   页码 1245-1252 doi: 10.1631/FITEE.1601112

摘要: 本文针对广义秩信号模型提出一种低复杂度的稳健自适应波束形成算法,用来抑制期望信号的阵列响应失配和接收信号的协方差矩阵失配。该波束形成算法不仅考虑期望信号以及接收信号协方差矩阵不确定集的范数有界性,还保证期望信号协方差矩阵的正定性。最终,本文在最差性能优化准则下推出一个计算简单的闭式加权矢量。计算机仿真结果验证了所提波束形成算法的有效性和稳健性。

关键词: 波束形成;广义秩;低复杂度;正定约束;模型失配    

Key issues in development of offshore natural gas hydrate

Shouwei ZHOU, Qingping LI, Xin LV, Qiang FU, Junlong ZHU

《能源前沿(英文)》 2020年 第14卷 第3期   页码 433-442 doi: 10.1007/s11708-020-0684-1

摘要: As a new clean energy resource in the 21st century, natural gas hydrate is considered as one of the most promising strategic resources in the future. This paper, based on the research progress in exploitation of natural gas hydrate (NGH) in China and the world, systematically reviewed and discussed the key issues in development of natural gas hydrate. From an exploitation point of view, it is recommended that the concepts of diagenetic hydrate and non-diagenetic hydrate be introduced. The main factors to be considered are whether diagenesis, stability of rock skeleton structure, particle size and cementation mode, thus NGHs are divided into 6 levels and used unused exploitation methods according to different types. The study of the description and quantitative characterization of abundance in hydrate enrichment zone, and looking for gas hydrate dessert areas with commercial exploitation value should be enhanced. The concept of dynamic permeability and characterization of the permeability of NGH by time-varying equations should be established. The ‘Three-gas co-production’ (natural gas hydrate, shallow gas, and conventional gas) may be an effective way to achieve early commercial exploitation. Although great progress has been made in the exploitation of natural gas hydrate, there still exist enormous challenges in basic theory research, production methods, and equipment and operation modes. Only through hard and persistent exploration and innovation can natural gas hydrate be truly commercially developed on a large scale and contribute to sustainable energy supply.

关键词: natural gas hydrate exploitation offshore     diagenetic and non-diagenetic hydrate     solid-state fluidization method     dessert in enrichment area     three-gas combined production on gas hydrate abundance    

标题 作者 时间 类型 操作

Response of bacterial communities to short-term pyrene exposure in red soil

Jingjing PENG, Hong LI, Jianqiang SU, Qiufang ZHANG, Junpeng RUI, Chao CAI

期刊论文

线性分配方法的逆序问题研究

章玲,周德群

期刊论文

Using heterogeneous patent network features to rank and discover influential inventors

Yong-ping DU,Chang-qing YAO,Nan LI

期刊论文

A critical review of ash slagging mechanisms and viscosity measurement for low-rank coal and bio-slags

Md Tanvir ALAM, Baiqian DAI, Xiaojiang WU, Andrew HOADLEY, Lian ZHANG

期刊论文

应用规范化公式的MCDM保序研究

章玲,周德群,李洪伟,朱佩枫

期刊论文

The CatMath: an online predictive platform for thermal + electrocatalysis

期刊论文

Dihydroartemisinin increased the abundance of by YAP1 depression that sensitizes hepatocellular carcinoma

期刊论文

一种直观的一般秩相关系数

Divya PANDOVE, Shivani GOEL, Rinkle RANI

期刊论文

The abundance, characteristics and diversity of microplastics in the South China Sea: Observation around

Hongzhe Chen , Sumin Wang , Huige Guo , Yunlong Huo , Hui Lin , Yuanbiao Zhang

期刊论文

Abundance, spatial distribution, and physical characteristics of microplastics in stormwater detention

期刊论文

重大环境污染事故风险模糊排序方法研究

熊德琪,陈钢,李琼

期刊论文

A rank-based multiple-choice secretary algorithm for minimising microgrid operating cost under uncertainties

期刊论文

Impacts of n-alkane concentration on soil bacterial community structure and alkane monooxygenase genes abundance

Yueqiao Liu, Aizhong Ding, Yujiao Sun, Xuefeng Xia, Dayi Zhang

期刊论文

基于正定约束广义秩信号模型的低复杂度稳健自适应算法

Yu-tang ZHU,Yong-bo ZHAO,Jun LIU,Peng-lang SHUI

期刊论文

Key issues in development of offshore natural gas hydrate

Shouwei ZHOU, Qingping LI, Xin LV, Qiang FU, Junlong ZHU

期刊论文