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Light-Based Chips Promise to Slash Energy Use and Increase Speed

Mitch Leslie

Engineering 2021, Volume 7, Issue 9,   Pages 1195-1196 doi: 10.1016/j.eng.2021.07.005

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Low powered blockchain consensus protocols based on consistent hash Research Article

Lei Yu, Xiao-fang Zhao, Yan Jin, Heng-yi Cai, Bo Wei, Bin Hu,yulei@ncic.ac.cn

Frontiers of Information Technology & Electronic Engineering 2019, Volume 20, Issue 10,   Pages 1361-1377 doi: 10.1631/FITEE.1800119

Abstract: Current s have a triangle of contradictions in aspects of decentralization, security, and energy con-sumption, and cannot be synchronously optimized. We describe a design of two new s, called “CHB-consensus” and “CHBD-consensus,” based on a algorithm. Honest miners can fairly gain the opportunity to create blocks. They do not consume any extra computational power resources when creating new blocks, and such blocks can obtain the whole network to confirm consensus with fairness. However, malicious miners have to pay massive computational power resources for attacking the new block creation privilege or double-spending. networks formed by CHB-consensus and CHBD-consensus are based on the same security assumption as that in Bitcoin systems, so they save a huge amount of power without sacrificing decentralization or security. We analyze possible attacks and give a rigorous but adjustable validation strategy. CHB-consensus and CHBD-consensus introduce a certification authority (CA) system, which does not have special management or control rights over networks or data structures, but carries the risk of privacy breaches depending on credibility and reliability of the CA system. Here, we analyze the robustness and energy consumption of CHB-consensus and CHBD-consensus, and demonstrate their advantages through theoretical derivation.

Keywords： 区块链；共识协议；一致性哈希；低能耗；去中心化    

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Artificial Intelligence, Like Cryptocurrency, Eats Energy—Lots of It

Mitch Leslie

Engineering 2024, Volume 32, Issue 1,   Pages 7-9 doi: 10.1016/j.eng.2023.11.006

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Study on steel output per unit GDP and steel production， energy consumption， materials consumption & wastes emission of steel industry

Lu Zhongwu,Yue Qiang,Gao Chengkang

Strategic Study of CAE 2013, Volume 15, Issue 4,   Pages 23-29

Abstract:

Steel output per unit GDP is an important index for controlling steel output,  for energy-saving, materials-decreasing and wastes-reducing of steel industry. This paper first gave the definition of steel output per unit GDP, introduced the concept and calculating formula of "in-use steel", Then two times of transformation for the definition formula of steel output per unit GDP were undertaken to obtain the new definition formulas with analytic function. Steel output and energy consumption,  materials consumption & wastes emission of steel industry were analyzed by using the new definition formulas of steel output per unit GDP, calculating formulas of steel output,  energy consumption,  materials consumption & wastes emission. Finally parameters related to steel industry were categorized and overall view for comprehensive promoting energy-saving, materials-decreasing and wastes-reducing of steel industry were put forward.

Keywords： steel output per unit GDP     steel output     in-use steel     GDP generation per unit in-use steel     energy consumption    

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Key technological research and application of low energy consumption building design in Tibe

Liu Jiaping,Yang Liu,Liu Yanfeng,Tian Guomin

Strategic Study of CAE 2011, Volume 13, Issue 10,   Pages 40-46

Abstract:

According to the poor environment situation of residential building in Tibetan plateau both urban and rural and the shortage of conventional energy sources, this paper presents the basic theories, methods and key technical problems for low energy consumption buildings design appropriate to the local climate natural condition and the social economic background, by the means of large-scale field investigation, detailed testing and calculation on the physical environment and energy consumption and the comprehensive analysis about the basic model of residential buildings. The basic meteorological data for low energy building design are developed. The energy saving building system for city and rural and the new rural ecological residential building model, based on the local culture and social economic development condition, are proposed and designed focusing on the utilization of solar energy. Moreover, exemplary projects are built,which not only meet basic thermal comfort level, but also guarantee the super low energy consumption for heating and cooling. Design standard and atlas reference to low energy building design for Tibetan plateau are compiled, promoting the overall progress of building energy conservation. The results of this study provide an effective reference for the entire Qinghai-Tibet plateau and for other areas of the country.

Keywords： Tibet Plateau     energy conservation     solar energy utilization     residential building     low energy consumption building    

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Research on Features of Energy Utilized in the Field of Consumption

Jiang Yi,Zhu Andong and Guo Siyue

Strategic Study of CAE 2015, Volume 17, Issue 8,   Pages 122-131

Abstract:

According to the features of using process, the energy use could be divided into two categories including the energy use in the field of consumption (EUFC) to provide services and the energy using in the field of production (EUFP) to provide products. The feature of EUFC is different with EUFP, including evaluation methods, energy saving approach and developing strategy, etc. Considering its potential to be the main growing sector in the next period of energy consumption, more attention should be paid to EUFC. In this paper, based on the analysis of its features, the measure of EUFC and the energy saving approach are recommended, as well as the suggestions to the present situation in China.

Keywords： the field of consumption     the field of production     energy consumption     feature    

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Numerical analysis on different lateral inlet cyclone flow field

Chen Qidong and Zuo Zhiquan

Strategic Study of CAE 2014, Volume 16, Issue 2,   Pages 58-67

Abstract:

Numerical simulation and calculation were performed on the gas-phase flow field of the straight tangential cyclone with single entry，straight tangential cyclone with double entries， bias tangential cyclone with single entry，bias tangential cyclone with double entries，bias tangential helicoidal cyclone with single entry，bias tangential helicoidal cyclone with double entries by using RSM model. Results showed that，the pressure field and velocity field of the cyclone with double entries had better symmetry and stability；only changing the inlet angle had a limited influence on the pressure field and velocity field. When the tangential velocity distribution were similar in the six kinds of cyclone studied in this article，compared with other cyclones’， the pressure drop of the bias tangential helicoidal cyclone decreased about 25 %；the inlet total pressure needed was about 17 % lower；the energy consumption dropped about 17 %. Moreover，bias tangential helicoidal cyclone with double entries（XS-L type）had a better energy efficiency ratio，and its performance was the most excellent.

Keywords： cyclone     lateral inlet     pressure drop     inlet total pressure     energy consumption    

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The macro-control on energy consumption， material consumption &waste emission of steel industry

Lu Zhongwu,Cai Jiuju,Du Tao,Yue Qiang,Gao Chengkang and Wang Heming

Strategic Study of CAE 2015, Volume 17, Issue 5,   Pages 126-132

Abstract:

The importance of carrying out deep and thorough study on energy consumption， material consumption and waste emission of steel industry was emphasized. The guideline， way of thinking and theoretical base of the study were illustrated. A network diagram for macro-control on steel industry was conceived， and a group of multi-ratio formulas was derived； both of them are necessary theoretical tools for precise and effective macro-control on steel industry. Looking back， the main reasons for extra huge amount of energy consumption， material consumption and waste emission of China’s steel industry were identified. Looking forward， the principle， direction， and long-term target of the macro-control in the future were put forward. In a word， the theory and methodology of the macro-control on steel industry were initially formulated.

Keywords： steel industry；steel production；energy consumption；material consumption and waste emission；network diagram for macro-control；macro-control formulas    

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China building energy conservation stratagems study

Jiang Yi

Strategic Study of CAE 2011, Volume 13, Issue 6,   Pages 30-38

Abstract:

The state of current China building energy use is presented. It is classified into the energy for space heating in North urban buildings, energy for space heating in Yangtze River area, energy for urban residential buildings, energy for non-residential buildings as well as energy for rural residential buildings. The characters, problems and key points for saving energy for each classification above were discussed in detail. Comparison with real building energy data in developed countries was also made in order to get clear idea on current China building energy state. It shows that current China building energy use is much lower than developed countries whatever in terms of per capita or in terms of building floor area. This is mainly due to the different lifestyles and different modes of building use. It is important to maintain the thrift mode in China in order to achieve the Chinese building energy conservation target. This should be the start point to design Chinese building energy strategy. As different lifestyles and different building use modes do need different technique measures, we should develop our own approach to realize their low building energy use target rather than follow the approaches that what happened in the developed countries.

Keywords： building energy     China energy policy     lifestyle & energy    

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Sustainable Development Model of Production Increase with Energy Conservation in Wuhan Iron and Steel Corp. (WISCO)

Dai Lin,Zhou Huoqing,Tian Zhiyu

Strategic Study of CAE 2006, Volume 8, Issue 12,   Pages 31-38

Abstract:

In March 2006，《The Outline of the 11th Five-Year Plan for National Economic and social Development (Profile)》stated that energy consumption per unit of GDP will be reduced by about 20% in “The 11th Five-year Plan ” period，which indicates the economic growth is transferring from conventional industrialization to new pattern. Due to the economic structure emerging with high energy intensity in “The 10th Five-year Plan”period, the proportion of energy consumption of industrial sector had gradually increased from 68.63% to about 71% of the national energy consumption. Apparently, iron and steel industry had experienced its rapid growth with the steel output increasing from 128.5 million tons to 352.39 million tons and the annual growth rate of 22.36% . Its energy consumption accounted for 21 % of the whole industrial energy consumption. Therefore, how to realize the sustainable development of increasing the output while reducing the energy consumption in those high-energy intensity enterprises would provide the good reference to the industrial sector, even to the whole country. Based on the investigation and analysis on WISCO, some important inspiration and experiences were summarized.

Keywords： Wuhan Iron and steel Corporation     energy consumption per unit of GDP     energy conservation     sustainable development    

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An international comparative study on the scope of China’s energy development

Du Xiangwan,Liu Xiaolong,Yang Bo,Wang Zhenhai,Kang Jincheng

Strategic Study of CAE 2013, Volume 15, Issue 6,   Pages 4-10

Abstract:

An international comparative analysis aimed at perspectives on China's energy development scope is presented in this paper. By comparing the development course of the energy consumption of the United States, Canada, Europe and Japan, we find that although these countries have achieved the same level of development, they have made major differences in per capita energy consumption. Based on this, we propose the concept of "two types of developed countries", which we describe as "America and Canada model" and "Europe and Japan model "(the latter can be further broken into the "Europe model" and the "Japan model"). The reasons for the consumption differences of the different models are analyzed separately in industry, transport, residential, commercial and public services end-use sectors. In conclusion, based on the comparative analysis of those developed countries and China's actual conditions, the paper proposes that China's growth scope of per capita energy consumption is less than her per capita energy consumption in 2010, and several suggestions for the energy development are given.

Keywords： energy     per capita energy consumption     international comparative analysis    

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MEACC: an energy-efficient framework for smart devices using cloud computing systems Research Articles

Khalid Alsubhi, Zuhaib Imtiaz, Ayesha Raana, M. Usman Ashraf, Babur Hayat,usman.ashraf@skt.umt.edu.pk

Frontiers of Information Technology & Electronic Engineering 2020, Volume 21, Issue 6,   Pages 809-962 doi: 10.1631/FITEE.1900198

Abstract: Rapidly increasing capacities, decreasing costs, and improvements in computational power, storage, and communication technologies have led to the development of many applications that carry increasingly large amounts of traffic on the global networking infrastructure. lead to emerging technologies and play a vital role in rapid evolution. have become a primary 24/7 need in today’s information technology world and include a wide range of supporting processing-intensive applications. Extensive use of many applications on results in increasing complexity of mobile software applications and consumption of resources at a massive level, including smart device battery power, processor, and RAM, and hinders their normal operation. Appropriate resource utilization and energy efficiency are fundamental considerations for because limited resources are sporadic and make it more difficult for users to complete their tasks. In this study we propose the model of mobile energy augmentation using (MEACC), a new framework to address the challenges of massive and inefficient resource utilization in . MEACC efficiently filters the applications to be executed on a smart device or offloaded to the cloud. Moreover, MEACC efficiently calculates the total execution cost on both the mobile and cloud sides including communication costs for any application to be offloaded. In addition, resources are monitored before making the decision to offload the application. MEACC is a promising model for load balancing and reduction in emerging environments.

Keywords： 卸载；智能设备；云计算；移动计算；能耗    

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Areliable power management scheme for consistent hashing based distributed key value storage systems Article

Nan-nan ZHAO,Ji-guang WAN,Jun WANG,Chang-sheng XIE

Frontiers of Information Technology & Electronic Engineering 2016, Volume 17, Issue 10,   Pages 994-1007 doi: 10.1631/FITEE.1601162

Abstract: Distributed key value storage systems are among the most important types of distributed storage systems currently deployed in data centers. Nowadays, enterprise data centers are facing growing pressure in reducing their power consumption. In this paper, we propose GreenCHT, a reliable power management scheme for consistent hashing based distributed key value storage systems. It consists of a multi-tier replication scheme, a reliable distributed log store, and a predictive power mode scheduler (PMS). Instead of randomly placing replicas of each object on a number of nodes in the consistent hash ring, we arrange the replicas of objects on nonoverlapping tiers of nodes in the ring. This allows the system to fall in various power modes by powering down subsets of servers while not violating data availability. The predictive PMS predicts workloads and adapts to load fluctuation. It cooperates with the multi-tier replication strategy to provide power proportionality for the system. To ensure that the reliability of the system is maintained when replicas are powered down, we distribute the writes to standby replicas to active servers, which ensures failure tolerance of the system. GreenCHT is implemented based on Sheepdog, a distributed key value storage system that uses consistent hashing as an underlying distributed hash table. By replaying 12 typical real workload traces collected from Microsoft, the evaluation results show that GreenCHT can provide significant power savings while maintaining a desired performance. We observe that GreenCHT can reduce power consumption by up to 35%–61%.

Keywords： Consistent hash table (CHT)     Replication     Power management     Key value storage system     Reliability    

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Development Strategies for China’s Advanced Magnesium Alloy Industry Toward 2035

Li Fang,Guan Renguo,Tie Di 3, Liu Chuming,Le Qichi,Song Jiangfeng,Zeng Xiaoqin,Jiang Bin

Strategic Study of CAE 2020, Volume 22, Issue 5,   Pages 76-83 doi: 10.15302/J-SSCAE-2020.05.014

Abstract:

In this paper, we introduce the development status of China’s magnesium alloy material industry, analyze the main problems faced by its development in China and abroad, and prospect the future market demand in China for magnesium alloy materials such as high-performance rare earth–magnesium alloys with lightweight structures, magnesium alloys with high strength and high thermal conductivity, magnesium alloys with high strength and high electrical conductivity, and ultra-high-strength magnesium alloys.We also present a phased development plan for the industry toward 2030 and 2035 and propose relevant strategies for promoting the sustainable development of this industry in China. These strategies include promotion of independent innovation capabilities, optimization in resource allocation, strengthening of corporate cooperation, establishment of a complete research system for magnesium alloy materials, and improvement in platform construction. To satisfy the demand for the advanced magnesium alloy materials by national economy, national major projects, and social sustainable development, China should optimize its scientific research system, optimize the industrial development pattern, create high-quality and efficient industries, improve relevant policy systems, and build a sophisticatedtalent system.

Keywords： metal material industry     magnesium alloy     rare earth–magnesium alloy     low energy consumption     high efficiency     2035    

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A Geodesign Method of Human-Energy-Water Interactive Systems for Urban Infrastructure Design: 10KM2 Near-Zero District Project in Shanghai Article

Perry Pei-Ju Yang, Cheryl Shu-Fang Chi, Yihan Wu, Steven Jige Quan

Engineering 2018, Volume 4, Issue 2,   Pages 182-189 doi: 10.1016/j.eng.2018.03.014

Abstract:

The grand challenges of climate change demand a new paradigm of urban design that takes the performance of urban systems into account, such as energy and water efficiency. Traditional urban design methods focus on the form-making process and lack performance dimensions. Geodesign is an emerging approach that emphasizes the links between systems thinking, digital technology, and geographic context. This paper presents the research results of the first phase of a larger research collaboration and proposes an extended geodesign method for a district-scale urban design to integrate systems of renewable energy production, energy consumption, and storm water management, as well as a measurement of human experiences in cities. The method incorporates geographic information system (GIS), parametric modeling techniques, and multidisciplinary design optimization (MDO) tools that enable collaborative design decision-making. The method is tested and refined in a test case with the objective of designing a near-zero-energy urban district. Our final method has three characteristics.①Integrated geodesign and parametric design: It uses a parametric design approach to generate focal-scale district prototypes by means of a custom procedural algorithm, and applies geodesign to evaluate the performances of design proposals. ② A focus on design flow: It elaborates how to define problems, what information is selected, and what criteria are used in making design decisions.③Multi-objective optimization: The test case produces indicators from performance modeling and derives principles through a multi-objective computational experiment to inform how the design can be improved. This paper concludes with issues and next steps in modeling urban design and infrastructure systems based on MDO tools.

Keywords： Geodesign     Urban design     Urban infrastructure     Energy performance     Iterative process     Multi-objective optimization    

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Title Author Date Type Operation

Light-Based Chips Promise to Slash Energy Use and Increase Speed

Mitch Leslie

Journal Article

Low powered blockchain consensus protocols based on consistent hash

Lei Yu, Xiao-fang Zhao, Yan Jin, Heng-yi Cai, Bo Wei, Bin Hu,yulei@ncic.ac.cn

Journal Article

Artificial Intelligence, Like Cryptocurrency, Eats Energy—Lots of It

Mitch Leslie

Journal Article

Study on steel output per unit GDP and steel production， energy consumption， materials consumption & wastes emission of steel industry

Lu Zhongwu,Yue Qiang,Gao Chengkang

Journal Article

Key technological research and application of low energy consumption building design in Tibe

Liu Jiaping,Yang Liu,Liu Yanfeng,Tian Guomin

Journal Article

Research on Features of Energy Utilized in the Field of Consumption

Jiang Yi,Zhu Andong and Guo Siyue

Journal Article

Numerical analysis on different lateral inlet cyclone flow field

Chen Qidong and Zuo Zhiquan

Journal Article

The macro-control on energy consumption， material consumption &waste emission of steel industry

Lu Zhongwu,Cai Jiuju,Du Tao,Yue Qiang,Gao Chengkang and Wang Heming

Journal Article

China building energy conservation stratagems study

Jiang Yi

Journal Article

Sustainable Development Model of Production Increase with Energy Conservation in Wuhan Iron and Steel Corp. (WISCO)

Dai Lin,Zhou Huoqing,Tian Zhiyu

Journal Article

An international comparative study on the scope of China’s energy development

Du Xiangwan,Liu Xiaolong,Yang Bo,Wang Zhenhai,Kang Jincheng

Journal Article

MEACC: an energy-efficient framework for smart devices using cloud computing systems

Khalid Alsubhi, Zuhaib Imtiaz, Ayesha Raana, M. Usman Ashraf, Babur Hayat,usman.ashraf@skt.umt.edu.pk

Journal Article

Areliable power management scheme for consistent hashing based distributed key value storage systems

Nan-nan ZHAO,Ji-guang WAN,Jun WANG,Chang-sheng XIE

Journal Article

Development Strategies for China’s Advanced Magnesium Alloy Industry Toward 2035

Li Fang,Guan Renguo,Tie Di 3, Liu Chuming,Le Qichi,Song Jiangfeng,Zeng Xiaoqin,Jiang Bin

Journal Article

A Geodesign Method of Human-Energy-Water Interactive Systems for Urban Infrastructure Design: 10KM2 Near-Zero District Project in Shanghai

Perry Pei-Ju Yang, Cheryl Shu-Fang Chi, Yihan Wu, Steven Jige Quan

Journal Article