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Estimation of regional physical imports and exports of EW-MFA in China using monetary input-output tables

Nan LI, Tianzhu ZHANG

《环境科学与工程前沿（英文）》 2013年 第7卷 第2期   页码 242-254 doi: 10.1007/s11783-012-0443-6

摘要： Given the statistical gaps in material flow among provinces in China, a method was introduced to estimate regional physical imports and exports (RPIE), which includes international and interregional imports/exports. This method uses provincial monetary input-output tables (MIOT) and international trade statistics. A coefficient matrix representing correlations between monetary value and physical mass for years 2000–2009 was obtained based on a detailed commodity classification and 22 material production sectors in MIOT. With the coefficient matrix as reference, RPIE was measured. Pilot calculation of both regional physical trade balance and domestic material consumption, as well as a brief analysis of these methods, were conducted using 2002 data.

关键词： economy-wide material flow accounts (EW-MFA)     monetary input-output table (MIOT)     regional physical imports and exports estimation    

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Clustering economic sectors in China on a life cycle basis to achieve environmental sustainability

Sai LIANG, Tianzhu ZHANG, Xiaoping JIA

《环境科学与工程前沿（英文）》 2013年 第7卷 第1期   页码 97-108 doi: 10.1007/s11783-012-0402-2

摘要： To improve material efficiency, industrial structure optimization becomes a focal point in Chinese industrial and environmental policies. It is crucial to cluster economic sectors and determine their priority for industrial and environmental policy implementation. Integrating a set of criteria, a hybrid input-output model and the hierarchical cluster analysis, this study clusters China’s economic sectors and determines their priority on a life cycle basis. China’s economic sectors are clustered into three clusters. Industrial structure changes (industrial policy) should encourage the development of sectors in cluster 1 and limit the development of sectors in cluster 2. Technology development and materials recycling (two environmental policies) should mainly focus on sectors in clusters 1 and 2. Future industrial policies in China should limit the development of two sectors named and . Instead of limiting some industries by command-and-control, the best policy option is to remedy environmental standards and law enforcement. Enterprises belonging to the identified key sectors from the viewpoint of direct production impacts should be concerned to achieve enterprise sustainability. To achieve sustainable production chains, the identified key sectors from the viewpoint of accumulative production impacts should be concerned. For sustainable consumption, the identified key sectors from the viewpoint of consumption impacts should be concerned to transform consumption styles. Most of environmental pressure can be alleviated not only by technical improvements and material recycling, but also by the development of economic sectors in cluster 1.

关键词： cluster analysis     input-output model     life cycle     material flow analysis     sustainable development    

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STRATEGIES FOR A LOW-CARBON FOOD SYSTEM IN CHINA

《农业科学与工程前沿（英文）》 2023年 第10卷 第2期   页码 167-182 doi: 10.15302/J-FASE-2023494

摘要：

● A provincial stage-specific greenhouse gas (GHG) accounting model for the Chinese food system was developed.

关键词： greenhouse gas emissions     food system     life cycle assessment     environmental input-output analysis     mitigation strategies    

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Cutting CO emissions through demand side regulation: Implications from multi-regional input–output linearprogramming model

《工程管理前沿（英文）》   页码 452-461 doi: 10.1007/s42524-022-0209-1

摘要： This study combines multi-regional input–output (MRIO) model with linear programming (LP) model to explore economic structure adjustment strategies for the reduction of carbon dioxide (CO2) emissions. A particular feature of this study is the identification of the optimal regulation sequence of final products in various regions to reduce CO2 emissions with the minimum loss in gross domestic product (GDP). By using China’s MRIO tables 2017 with 28 regions and 42 economic sectors, results show that reduction in final demand leads to simultaneous reductions in GDP and CO2 emissions. Nevertheless, certain demand side regulation strategy can be adopted to lower CO2 emissions at the smallest loss of economic growth. Several key final products, such as metallurgy, nonmetal, metal, and chemical products, should first be regulated to reduce CO2 emissions at the minimum loss in GDP. Most of these key products concentrate in the coastal developed regions in China. The proposed MRIO–LP model considers the inter-relationship among various sectors and regions, and can aid policy makers in designing effective policy for industrial structure adjustment at the regional level to achieve the national environmental and economic targets.

关键词： CO2 emissions     demand side regulation     multi-regional input–output model     linear programming model    

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Impacts of inter-sectoral trade on carbon emissions—a case of China in 2007

Xiuqi FANG, Benyong WEI, Yuan WANG

《环境科学与工程前沿（英文）》 2012年 第6卷 第3期   页码 387-402 doi: 10.1007/s11783-012-0396-9

摘要： With the increase in international trade, more attention has been given to quantifying the impacts of international trade on energy use and carbon emissions. Input-output analysis is a suitable tool for assessing resources or pollutants embodied in trade and it has become a critical tool for performing such analysis. This study estimated the national and sectoral carbon emissions embodied in Chinese international trade using the latest available China input-output table of 2007. The results showed that a significant exporting behavior of embodied carbon emissions existed in China’s trade. Over 1/3 of the emissions in Chinese domestic production processes were generated for exports in 2007. The net balance of emissions embodied in exports and imports accounted for nearly 30% of China’s domestic emissions, which means that any policy made to increase the exports would result in a significant growth of China’s domestic emissions. Since over half of China’s export trade is processing trade, the re-exported emissions could not be overlooked; otherwise, it would hard to capture the actual emissions generated abroad to obtain China’s domestic consumption. The enlargement of export scale is a primary driven factor to the rapid growth of China’s exported emissions. It is necessary for China to adjust its economic and industrial structure to reduce the dependence of economic growth on the export trade. However, when adjusting industry structures or making policies on carbon emission reduction, it will be more reasonable to consider the relationship between production and consumption, rather than just focus on the emission values of sectors’ direct production, as a large part of carbon emissions emitted by the principal direct polluters were generated to obtain the products which were required by other sectors.

关键词： international trade     carbon emissions     input-output analysis     China    

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四川省电信制造业的经济效益分析和评价

韩轶,陈宏

《中国工程科学》 2004年 第6卷 第1期   页码 81-85

摘要：

通过经济效益分析模型和1987—1997年的四川省投入产出表提供的数据，并分析了电信制造业10年来的经济效益状况，综合评价了电信制造业在四川省国民经济中的贡献和作用，四川省电信制造业的作用正在发生较大的变化，从以前的推动型逐渐转变成带动型；论证了四川省电信制造业优先发展的必然性，为四川省国民经济发展提供对策。

关键词： 经济效益     电信制造业     综合评价     投入产出    

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中国与“一带一路”沿线典型国家贸易虚拟水分析

孟凡鑫 ,夏昕鸣 ,胡元超 ,杨志峰

《中国工程科学》 2019年 第21卷 第4期   页码 92-99 doi: 10.15302/J-SSCAE-2019.04.019

摘要：

本文基于多区域投入产出分析方法，建立了全球多尺度嵌套模型及相应的环境卫星矩阵数据库，测算了中国对“一带一路”沿线典型国家商品和服务贸易的虚拟水量。总体来说，中国在与“一带一路”沿线典型国家进行贸易时，国内生产耗水量小于国内消费虚拟水，属于虚拟水的“国内消费、国外承担”模式，是虚拟水净进口国。俄罗斯和韩国是中国虚拟水的主要出口国家，印度和印度尼西亚是中国虚拟水的主要进口国。研究表明，中国沿海、内陆、东北、西北及西南地区的国内外出口贸易虚拟水依次减少，在贸易虚拟水足迹行业结构中，农林牧渔业是最大的虚拟水净出口部门，食品及烟草行业、建筑业、其他服务业是位于前三的虚拟水进口部门。

关键词： 投入产出分析     虚拟水足迹     进出口贸易     “一带一路”    

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动态双输入双输出的倾斜镜系统建模 Article

Hong SONG, Jia-heng ZHANG, Ping YANG, Hao-cai HUANG, Shu-yue ZHAN, Teng-jun LIU, Yi-lu GUO, Hang-zhou WANG, Hui HUANG, Quan-quan MU, Mei-fen FANG, Ming-yuan YANG

《信息与电子工程前沿（英文）》 2017年 第18卷 第10期   页码 1488-1498 doi: 10.1631/FITEE.1601221

摘要： 本文主要探究了在传感器采样频率较高（如高速相机、位置传感器）、倾斜镜动态特性不可忽略的情况下，如何基于实验数据建立开环倾斜镜系统的动态耦合数学模型的问题。分析了系统的动态特性以及输入与输出之间的耦合，提出了基于倾斜镜系统的输入输出数据、采用子空间辨识算法建立倾斜镜系统动态耦合数学模型的方法，并通过实验评估了模型的准确性和建模方法的可行性。实验结果显示，通过该方法所建立的倾斜镜动态耦合模型的VAF（variance-accounted-for）值达到了97%，其准确性相比传统的静态模型有了很大提高，验证了建模方法的可行性。研究成果可用于闭环倾斜镜系统优化反馈控制器的设计，提高系统对于光束偏移矫正的性能。

关键词： 倾斜镜；动态系统；输出输出耦合；物理建模；子空间辨识    

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农业生态工程中人工辅助能产投比的计算分析研究

卞有生,柳英昆,卞晶

《中国工程科学》 2006年 第8卷 第8期   页码 28-32

摘要：

人工辅助能产投比的高低从总体上反映了农业生态系统的功能和生产效率，是系统结构功能的体现，是评价农业生态工程的重要指标。文章以河南新县10户农民为案例，具体介绍了人工辅助能产投比的计算研究方法，并报告了连续3年的研究结果。

关键词： 农业生态工程     能量产投比    

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Investigation on the integral output power model of a large-scale wind farm

BAO Nengsheng, MA Xiuqian, NI Weidou

《能源前沿（英文）》 2007年 第1卷 第1期   页码 67-78 doi: 10.1007/s11708-007-0006-x

摘要： The integral output power model of a large-scale wind farm is needed when estimating the wind farm s output over a period of time in the future. The actual wind speed power model and calculation method of a wind farm made up of many wind turbine units are discussed. After analyzing the incoming wind flow characteristics and their energy distributions, and after considering the multi-effects among the wind turbine units and certain assumptions, the incoming wind flow model of multi-units is built. The calculation algorithms and steps of the integral output power model of a large-scale wind farm are provided. Finally, an actual power output of the wind farm is calculated and analyzed by using the practical measurement wind speed data. The characteristics of a large-scale wind farm are also discussed.

关键词： power model     actual     energy     large-scale     practical measurement    

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Multiple input self-organizing-map ResNet model for optimization of petroleum refinery conversion units

《化学科学与工程前沿（英文）》 2023年 第17卷 第6期   页码 759-771 doi: 10.1007/s11705-022-2269-5

摘要： This work introduces a deep-learning network, i.e., multi-input self-organizing-map ResNet (MISR), for modeling refining units comprised of two reactors and a separation train. The model is comprised of self-organizing-map and the neural network parts. The self-organizing-map part maps the input data into multiple two-dimensional planes and sends them to the neural network part. In the neural network part, residual blocks enhance the convergence and accuracy, ensuring that the structure will not be overfitted easily. Development of the MISR model of hydrocracking unit also benefits from the utilization of prior knowledge of the importance of the input variables for predicting properties of the products. The results show that the proposed MISR structure predicts more accurately the product yields and properties than the previously introduced self-organizing-map convolutional neural network model, thus leading to more accurate optimization of the hydrocracker operation. Moreover, the MISR model has smoother error convergence than the previous model. Optimal operating conditions have been determined via multi-round-particle-swarm and differential evolution algorithms. Numerical experiments show that the MISR model is suitable for modeling nonlinear conversion units which are often encountered in refining and petrochemical plants.

关键词： hydrocracking     convolutional neural networks     self-organizing map     deep learning     data-driven optimization    

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考虑量化输入信号的多智能体系统自适应输出反馈编队跟踪控制 None

Jing-lin HU, Xiu-xia SUN, Lei HE, Ri LIU, Xiong-feng DENG

《信息与电子工程前沿（英文）》 2018年 第19卷 第9期   页码 1086-1097 doi: 10.1631/FITEE.1601801

摘要： 针对带有不确定性和量化输入信号的多智能体系统的编队跟踪控制问题，提出一种自适应输出反馈控制方法。利用非线性模型描述智能体系统，其中包含未知参数和不可测状态。建立一个高增益状态观测器以估测系统不可测状态。在高增益观测器和迟滞量化器基础上，设计自适应输出反馈控制方法，并确定控制系统的参数设置方法。稳定性分析证明该控制方法能使多智能体系统跟踪参考航迹并保持编队队形。同时，闭环系统中的所有信号均能保持有界。最后，仿真实验表明该控制方法的有效性。

关键词： 多智能体系统；自适应输出反馈；编队跟踪；迟滞量化    

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大规模天线多入多出认知无线网络中的多用户传输速率和能量分析 None

Shang LIU, Ishtiaq AHMAD, Ping ZHANG, Zhi ZHANG

《信息与电子工程前沿（英文）》 2018年 第19卷 第5期   页码 674-684 doi: 10.1631/FITEE.1700081

摘要： 讨论了在包含中继和大规模多入多出天线下的认知无线网络传输性能和能量分配问题。首先得到了在不考虑认知情况下的中继辅助大规模天线网络的下行传输性能，运用功率分配准则，第k个用户的渐近信干噪比与快衰落无关，当基站天线数和中继天线数的比值趋于无穷大时，整个传输过程的传输性能只与从中继到用户侧的传输有关，而与另外一侧的传输无关。接着给出了在完美和非完美信道情况下的认知大规模多入多出天线中继网络性能的闭式表达式。当主用户基站、次级用户基站、中继基站的天线数目趋于无穷大时，传输性能与快衰落无关，主、次网络之间的干扰能被完全消除，次级网络传输性能与干扰温度无关，次级网络可用峰值功率进行传输而不对主用户网络产生干扰。定义了主用户网络的效用函数，通过凸优化分析得到最佳中继发射功率。系统仿真验证了该结论。通过仿真，得到了系统传输速率与天线数目、中继功率、天线数目比值的关系。在多用户认知无线网络中，运用大规模多入多出天线的线性预编码方式能够极大减少干扰，提高传输效率，主用户网络和次级用户网络可以独立传输。

关键词： 大规模多入多出；认知无线电；中继网络；传输速率；功率分析    

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Unified cycle model of a class of internal combustion engines and their optimum performance characteristics

Shiyan ZHENG

《能源前沿（英文）》 2011年 第5卷 第4期   页码 367-375 doi: 10.1007/s11708-011-0170-x

摘要： The unified cycle model of a class of internal combustion engines is presented, in which the influence of the multi-irreversibilities mainly resulting from the adiabatic processes, finite-time processes and heat leak loss through the cylinder wall on the performance of the cycle are taken into account. Based on the thermodynamic analysis method, the mathematical expressions of the power output and efficiency of the cycle are calculated and some important characteristic curves are given. The influence of the various design parameters such as the high-low pressure ratio, the high-low temperature ratio, the compression and expansion isentropic efficiencies etc. on the performance of the cycle is analyzed. The optimum criteria of some important parameters such as the power output, efficiency and pressure ratio are derived. The results obtained from this unified cycle model are very general and useful, from which the optimal performance of the Atkinson, Otto, Diesel, Dual and Miller heat engines and some new heat engines can be directly derived.

关键词： internal combustion engine     irreversibility     power output     efficiency     optimization    

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在非对称大规模MIMO系统中基于集成—迁移学习的信道参数预测 Research Article

何遵文1,李悦1,张焱1,张万成1,张恺恩1,郭柳1,王海明2

《信息与电子工程前沿（英文）》 2023年 第24卷 第2期   页码 275-288 doi: 10.1631/FITEE.2200169

摘要： 近年来，多智能体深度强化学习（multi-agent deep 为降低第六代移动网络中的数据处理负担和硬件成本，非对称大规模多入多出（multiple-input multiple-output，MIMO

关键词： 非对称大规模MIMO系统；信道模型；集成学习；实例迁移；参数预测    

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标题 作者 时间 类型 操作

Estimation of regional physical imports and exports of EW-MFA in China using monetary input-output tables

Nan LI, Tianzhu ZHANG

期刊论文

Clustering economic sectors in China on a life cycle basis to achieve environmental sustainability

Sai LIANG, Tianzhu ZHANG, Xiaoping JIA

期刊论文

STRATEGIES FOR A LOW-CARBON FOOD SYSTEM IN CHINA

期刊论文

Cutting CO emissions through demand side regulation: Implications from multi-regional input–output linearprogramming model

期刊论文

Impacts of inter-sectoral trade on carbon emissions—a case of China in 2007

Xiuqi FANG, Benyong WEI, Yuan WANG

期刊论文

四川省电信制造业的经济效益分析和评价

韩轶,陈宏

期刊论文

中国与“一带一路”沿线典型国家贸易虚拟水分析

孟凡鑫 ,夏昕鸣 ,胡元超 ,杨志峰

期刊论文

动态双输入双输出的倾斜镜系统建模

Hong SONG, Jia-heng ZHANG, Ping YANG, Hao-cai HUANG, Shu-yue ZHAN, Teng-jun LIU, Yi-lu GUO, Hang-zhou WANG, Hui HUANG, Quan-quan MU, Mei-fen FANG, Ming-yuan YANG

期刊论文

农业生态工程中人工辅助能产投比的计算分析研究

卞有生,柳英昆,卞晶

期刊论文

Investigation on the integral output power model of a large-scale wind farm

BAO Nengsheng, MA Xiuqian, NI Weidou

期刊论文

Multiple input self-organizing-map ResNet model for optimization of petroleum refinery conversion units

期刊论文

考虑量化输入信号的多智能体系统自适应输出反馈编队跟踪控制

Jing-lin HU, Xiu-xia SUN, Lei HE, Ri LIU, Xiong-feng DENG

期刊论文

大规模天线多入多出认知无线网络中的多用户传输速率和能量分析

Shang LIU, Ishtiaq AHMAD, Ping ZHANG, Zhi ZHANG

期刊论文

Unified cycle model of a class of internal combustion engines and their optimum performance characteristics

Shiyan ZHENG

期刊论文

在非对称大规模MIMO系统中基于集成—迁移学习的信道参数预测

何遵文1,李悦1,张焱1,张万成1,张恺恩1,郭柳1,王海明2

期刊论文