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Communication in Underwater Wireless Sensor Networks 水下无线传感器网络中的通信
Pub Date : 2023-06-26 DOI: 10.54097/ije.v3i1.10651
Xi Yang
As is well known, the ocean covers approximately 70% of the Earth's surface area. Currently, human exploration of the ocean remains at less than 5%. Therefore, continuous exploration and development of marine resources are of great significance. In recent years, underwater wireless communication technology has rapidly developed. However, the harsh and constantly changing underwater environment has also posed many technical challenges.
众所周知,海洋覆盖了地球表面大约70%的面积。目前,人类对海洋的探索还不到5%。因此,不断勘探和开发海洋资源具有重要意义。近年来,水下无线通信技术得到了迅速发展。然而,恶劣且不断变化的水下环境也带来了许多技术挑战。
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引用次数: 0
Online Evaluation Method for Carbon Performance of Coal Mines Owned by the Coal Industry Group based on Combination of Subjective and Objective Weights 基于主客观权重相结合的煤炭集团煤矿碳排放绩效在线评价方法
Pub Date : 2023-06-26 DOI: 10.54097/ije.v3i1.10529
Qiang Zeng, Shanshan Zhai, Jinshan Ma, Baiyun Yuan, Ke Lin
An online evaluation method for carbon performance of coal mines owned by the coal industry group based on combination of subjective and objective weights is proposed. Firstly, the evaluation method for carbon performance of coal mines owned by the coal industry group based on combination of subjective and objective weights is proposed: (1) The index system of carbon performance evaluation of coal mines owned by the coal industry group is constructed. (2) The objective weight of each index is obtained by entropy weight method. (3) The subjective weight of each index is obtained by Delphi method. (4) The comprehensive weight of each index is obtained by weighted average method. (5) The score of each index of each coal mine is obtained by linear interpolation method. (6) The comprehensive evaluation score of each coal mine is obtained by weighted average method. Secondly, taking Sql server as the database management system, ASP and C# as the development language, Dreamweaver and Visual Studio as the development platform, the system of carbon performance evaluation of coal mines owned by the coal industry group based on B/S structure is designed, and the system can realize online evaluation for carbon performance of coal mines. Finally, the application analysis results show that the method can ensure the objectivity of carbon performance evaluation of coal mines, greatly improve the efficiency of evaluation, and realize sharing and comparison of the evaluation results.
提出了一种基于主客观权重相结合的煤炭工业集团所属煤矿碳绩效在线评价方法。首先,提出了主客观权重相结合的煤业集团所属煤矿碳绩效评价方法:(1)构建了煤业集团所属煤矿碳绩效评价指标体系。(2)采用熵权法获得各指标的客观权重。(3)采用德尔菲法求得各指标的主观权重。(4)采用加权平均法求得各指标的综合权重。(5)采用线性插值法得到各煤矿各指标的得分。(6)采用加权平均法求得各煤矿的综合评价得分。其次,以Sql server为数据库管理系统,以ASP和c#为开发语言,以Dreamweaver和Visual Studio为开发平台,设计了基于B/S结构的煤业集团所属煤矿碳绩效评价系统,实现了煤矿碳绩效在线评价。最后,应用分析结果表明,该方法保证了煤矿碳绩效评价的客观性,大大提高了评价效率,实现了评价结果的共享和比较。
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引用次数: 0
Classification and Research Progress of Fracturing Fluids 压裂液的分类与研究进展
Pub Date : 2023-06-26 DOI: 10.54097/ije.v3i1.10659
Mengye Zhang
As one of the important technical means to increase production in oil and gas fields, the success or failure of fracturing construction and the effect of increasing production depend largely on the performance of the fracturing fluid used. This paper analyzes the fracturing fluid systems used in different coal seams at home and abroad, and lists the research progress of several fracturing fluid systems, which plays a guiding role in the selection of fracturing fluids in the development of oil seams.
作为油气田增产的重要技术手段之一,压裂施工的成败和增产效果在很大程度上取决于所用压裂液的性能。本文分析了国内外不同煤层使用的压裂液体系,列举了几种压裂液体系的研究进展,对油层开发中压裂液的选择具有指导作用。
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引用次数: 0
Research Progress and Prospect of Thermal Management of Automotive Lithium-ion Batteries 车用锂离子电池热管理研究进展与展望
Pub Date : 2023-06-26 DOI: 10.54097/ije.v3i1.10194
Hao Wu, Hua Ou
As an important energy storage device, lithium-ion batteries are widely used in mobile electronic devices, electric vehicles and other fields. However, lithium-ion batteries generate a lot of heat during the charging and discharging process, and if effective thermal management is not carried out, it will lead to problems such as battery performance, reduced safety and even thermal runaway. Therefore, it is of great significance to study the thermal management strategy of lithium-ion batteries to improve battery performance and safety. This paper reviews the progress of thermal management research on lithium-ion batteries in recent years, analyzes the working principles of active cooling and passive cooling in detail, proposes the application methods of composite cooling, and looks forward to the future research should focus on the research and development of Multiphysics coupling simulation, intelligent thermal management system and new thermal management materials to achieve efficient thermal management of lithium-ion batteries and improve battery performance and safety.
锂离子电池作为一种重要的储能器件,广泛应用于移动电子设备、电动汽车等领域。然而,锂离子电池在充放电过程中会产生大量的热量,如果不进行有效的热管理,就会导致电池性能下降、安全性降低甚至热失控等问题。因此,研究锂离子电池的热管理策略对提高电池性能和安全性具有重要意义。本文综述了近年来锂离子电池热管理研究的进展,详细分析了主动冷却和被动冷却的工作原理,提出了复合冷却的应用方法,并展望了未来研究应重点关注多物理场耦合仿真的研究与开发。智能热管理系统和新型热管理材料,实现锂离子电池的高效热管理,提高电池性能和安全性。
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引用次数: 0
A Review of Research on the Impact of Global Climate Change on Hydrology and Water Resources 全球气候变化对水文水资源影响研究综述
Pub Date : 2023-06-26 DOI: 10.54097/ije.v3i1.10650
Yutong Sun, Liheng Xia
Climate change has become one of the environmental problems that the scientific community, governments and the public pay attention to. Climate change may have a disastrous impact on the ecosystem and social economy. The impacts of climate change are multi-scale, all-round and multi-level, with both positive and negative impacts, but its negative impacts are more concerned. In recent years, with the gradual deterioration of global climate, it has a great impact on people's production and life, especially on hydrology and water resources. This paper introduces the current situation and progress of research on the impact of global climate change on hydrology and water resources at home and abroad, with emphasis on the current situation and progress of research at home.
气候变化已成为科学界、政府和公众关注的环境问题之一。气候变化可能对生态系统和社会经济造成灾难性的影响。气候变化的影响是多尺度、全方位、多层次的,既有正面影响,也有负面影响,但其负面影响更受关注。近年来,随着全球气候的逐渐恶化,对人们的生产和生活产生了很大的影响,特别是对水文和水资源的影响。本文介绍了全球气候变化对水文水资源影响的国内外研究现状和进展,重点介绍了国内的研究现状和进展。
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引用次数: 0
Discussion on Dust Control Technology of Coal Mine Integrated Excavation Face 煤矿综合开挖工作面粉尘控制技术探讨
Pub Date : 2023-06-26 DOI: 10.54097/ije.v3i1.10541
Youfan Deng
Coal is an important energy source in our country, and coal mine dust seriously endangers production safety and occupational health and safety, so it is necessary to take effective technical measures to prevent and control the coal mine. According to the main technical ways of dust prevention and control, the technical measures such as improving dust-proof water, strengthening coal seam water injection, carrying out high-pressure external spray, dust control and dust extraction purification, air flow purification and individual protection are discussed respectively. Finally, the technical measures of dust prevention and control in the future are prospected, and several technologies and equipment should be emphasized to break through.
煤炭是我国重要的能源,煤矿扬尘严重危害生产安全和职业健康安全,有必要采取有效的技术措施对煤矿扬尘进行防治。根据防治粉尘的主要技术途径,分别论述了改善防尘水、加强煤层注水、开展高压外喷、防尘除尘净化、气流净化、单兵防护等技术措施。最后,对今后粉尘防治的技术措施进行了展望,提出了应重点突破的几项技术和设备。
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引用次数: 0
Research on Multi -mode Power Generation Devices based on Wave Energy 基于波浪能的多模发电装置研究
Pub Date : 2023-06-26 DOI: 10.54097/ije.v3i1.10133
Chenxu Zhang, Yunfei Yang, Nan Yang, Song Gao, Ruizhong Wang
This paper mainly studies a multi-mode power generation device based on wave energy, which is mainly composed of power generation device, energy storage device, monitoring device, through the use of electromagnetic machinery, piezoelectric ceramics, hydraulic system in a variety of ways to generate electricity, and then the energy storage device stable output, is a kind of power generation system will be converted into electrical energy device, to achieve high efficiency conversion of wave energy. Each part of the project is innovative and practical, which has high application value in ocean power generation. Compared with some traditional power generation devices, this device uses a new type of energy, ocean wave energy, which is a pollution-free, clean and renewable new energy. Wave energy has high flow density, huge reserves and wide distribution, which is the main direction of the development of ocean energy utilization in the future. It will make positive contributions to Marine construction, economic development and infrastructure construction of countries and regions along the Belt and Road.
本文主要研究一种基于波浪能的多模发电装置,它主要由发电装置、储能装置、监测装置组成,通过利用电磁机械、压电陶瓷、液压系统等多种方式产生电能,然后由储能装置稳定输出,是一种将发电系统转化为电能的装置。实现波浪能的高效转换。项目各部分创新实用,在海洋发电中具有较高的应用价值。与一些传统的发电装置相比,该装置使用的是一种新型能源——海浪能,是一种无污染、清洁、可再生的新能源。波浪能具有流密度高、储量大、分布广等特点,是未来海洋能利用发展的主要方向。将为“一带一路”沿线国家和地区的海洋建设、经济发展和基础设施建设作出积极贡献。
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引用次数: 0
The Interconnection Ideas for Carbon Emissions Trading Market in Guangdong, Hong Kong, Macao and Greater Bay Area 粤港澳及大湾区碳排放权交易市场互联互通构想
Pub Date : 2023-06-26 DOI: 10.54097/ije.v3i1.10569
Xi Chen
Building the interconnection mechanism of carbon emission trading market in the Guangdong-Hong Kong-Macao Greater Bay Area is an innovative exploration to promote regional carbon emission reduction. This paper analyzes the feasibility of interconnecting carbon emission trading markets in the Bay Area from the perspectives of the difference between industrial structure and energy consumption, as well as the compatibility of carbon emission trading systems, by analyzing the operation status of carbon trading markets in Guangdong, Shenzhen, Hong Kong, and Macao, and the experience of Guangdong and Shenzhen as the Chinese carbon trading pilot. Based on the above discussion, this paper puts forward three adjustment ideas for the interconnection of the Bay Area Carbon Market: providing legal support, unifying the access to industry sectors and its quantities, and establishing a complete carbon emission monitoring, reporting and verification institution.
构建粤港澳大湾区碳排放权交易市场互联互通机制,是推动区域碳减排的创新探索。本文通过分析广东、深圳、香港、澳门碳交易市场的运行现状,结合广东、深圳作为中国碳交易试点的经验,从产业结构、能源消费差异、碳排放交易体系兼容性等角度,分析湾区碳排放交易市场互联互通的可行性。在此基础上,本文提出了湾区碳市场互联互通的三个调整思路:提供法律支持、统一行业准入和数量、建立完善的碳排放监测、报告和核查机构。
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引用次数: 0
Experimental Study on the Proportioning of Grouting Materials for Fractured Roadways 裂隙巷道注浆材料配比试验研究
Pub Date : 2023-06-25 DOI: 10.54097/ije.v3i1.10131
Peihao Li, Pan Chi, Jinhai Gao
For broken, low overall strength roadways, anchor cable and anchor mesh support are generally adopted. Sometimes, grouted anchor cable support is both an economical and safe support method. Therefore, the design of grouting materials and ratios plays a stewardship role. Through the proportioning experiments of cement slurry and water glass, a suitable proportioning scheme and the determination of various parameters were identified. According to the analysis of the test results, a slurry mixture of ordinary silicate cement with a water-cement ratio of 0.8 and water glass with a volume ratio of 1:0.5 is more suitable for the site grouting conditions.
对于破碎、综合强度较低的巷道,一般采用锚索和锚网支护。有时,注浆锚索支护是一种既经济又安全的支护方法。因此,注浆材料和配比的设计起着管理作用。通过水泥浆与水玻璃的配合比试验,确定了合适的配合比方案及各参数的确定。根据试验结果分析,水灰比为0.8的普通硅酸盐水泥与体积比为1:0.5的水玻璃浆体混合物更适合现场注浆条件。
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引用次数: 0
Statics Analysis and Modal Analysis of Copper Anode Plate Taking Robot 铜阳极取板机器人静力学分析及模态分析
Pub Date : 2023-06-25 DOI: 10.54097/ije.v3i1.10139
Meng Zhang
Taking the copper anode plate picking robot as the research object, the three-dimensional model of the robot was established by solidworks software, and combined with the actual working characteristics of the robot, the workbench software was used to analyze the static mechanics of the robot arm in the most dangerous working condition and the first six orders of modal analysis in three typical working conditions: picking position, putting position and starting position. The simulation results show that the strength and stiffness of the robot arm and the small arm are within the allowable range and meet the design requirements; it is necessary to avoid the low-order frequencies or to strengthen the rigidity of the overall structure of the robot.
以铜阳极板拾取机器人为研究对象,利用solidworks软件建立机器人的三维模型,结合机器人的实际工作特点,利用workbench软件对机器人手臂在最危险工况下的静态力学进行了分析,并对拾取位置、放放位置和出发位置三种典型工况下的前六阶模态进行了分析。仿真结果表明,机械臂和小臂的强度和刚度均在允许范围内,满足设计要求;必须避免低阶频率或加强机器人整体结构的刚度。
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引用次数: 0
期刊
International journal of energy science
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