bluuebunny/crossref_metadata_2025_split huggingface dataset:
Optimal density for balancing the thermal conductivity and compressive strength of foamed ceramic
Authors: Lei Yue , Zheng Xing , Dou Mei , Zheng Lihong , Tang Mingfang , Feng Chi 
Published: December 2021

Abstract
Foamed ceramic becomes increasingly popular in building engineering due to its thermal, acoustic and other advantages. However, conflicts often exist between its different properties. In this paper, we seek a balance between the thermal conductivity and the compressive strength of foamed ceramic. Experiments are performed on foamed ceramic with different densities. Nonlinear regression is then adopted to quantify the relationship between the thermal conductivity/compressive strength and the bulk density. The results indicate that both the thermal conductivity and the compressive strength increase with the rising density. Based on the requirements in the Chinese national standard, the optimum density range of foamed ceramic is proposed, satisfying a balance between the thermal and mechanical performance.
In-situ measurements of the U-value of a ventilated wall assembly
Authors: Rahiminejad M , Khovalyg D 
Published: December 2021

Abstract
The walls in a building envelope have the largest contact area with the exterior environment, and, therefore, a considerable portion of the thermal energy can be lost through the walls compared to the other parts of the building envelope. For energy-saving purposes, the thermal transmittance of walls is typically limited by building energy performance standards at the national level. However, the presence of a ventilated air-space behind the external cladding, which has variable hydro-dynamic behavior, can differently affect the total thermal transmittance of the entire structure. This paper aims to provide an experimental analysis of the total U-value of a ventilated wall assembly measured in a building prototype following the average and dynamic methods defined by ISO 9869-1. Differences between the calculated theoretical U-value and the measured U-value are compared. The contribution of the thermal resistance of the ventilated air-space in the total thermal transmittance of the wall assembly is also analyzed. The results show that the air movement and the enthalpy change in the ventilated cavity can affect the thermal performance of the wall structure to a certain extent.
Hygrothermal simulation on effective dehumidification methods in a museum storage room
Authors: Ishikawa K , Iba C , Ogura D , Hokoi S , Yokoyama M 
Published: December 2021

Abstract
The hygrothermal environment must be controlled in facilities like museums and galleries to suitably conserve the stored cultural artifacts. The present study proposes a humidity control technique for a museum storage room in Kyoto, Japan. This method requires limited energy and no large-scale equipment or major building renovation. The relative humidity of the room measured during the preliminary field survey exceeded the range for the conservation of metal artifacts (under 45%RH) throughout the year, and dehumidification was experimentally performed. The possible range of humidity control and the energy are quantitatively evaluated in the present study by simulating varied ways of operating a dehumidifier in combination with the improvement of the room’s property of being airtight. The results of the study indicated that simple building modifications and operational improvements could improve the storage environment. For instance, measures to ameliorate airtightness and sensing control along with the addition of small-scale equipment such as a home-use compressor-type dehumidifier can yield long-term low humidity suitable for the conservation of metal cultural artifacts. Such measures are also considered advantageous in terms of energy and labor consumption.
Experiences using EN 17037 in evaluation of daylighting of dwellings in Slovakia
Authors: Curpek J , Hraska J 
Published: December 2021

Abstract
The daylighting of indoor spaces depends particularly on the urban and architectural parameters of the building environment. The new standard EN 17037, Daylight in Buildings, has brought several changes and uncertainties in design process of daylighting for buildings. The submitted paper is focused on analysis of the philosophy of the new standard criteria in relation to the daylighting of dwellings along with the criteria that have been used in Central European countries for decades. EN 17037 does not distinguish between differences in the functional use of indoor spaces in terms of daylight provision. The new European standard requires at the half of subjectively determined reference plane to achieve the same value of illumination for half of daylight hours per year for any occupied room. The EN standard does not sufficiently respect the specifics of daylighting of dwellings.
Preliminary assessment of the building design of a new test house in Nuuk, Greenland
Authors: Møller E B , Lading T 
Published: December 2021

Abstract
DTU has established a single-family three-level test house in Nuuk, Greenland. The main idea of the house was to have a relatively small heated area but a split building envelope, where a ventilated space behind the rain screen in some areas could be used as a sunroom. This paper describes the process of transforming the architectural ideas to a test building. Main issues have been how to design the rain screen and how to ventilate the space behind the rain screen.
Re-making the energy profile of (Irish) market towns: as if science matters
Authors: Murray Martin A , Colclough Shane 
Published: December 2021

Abstract
Reduction of building-related carbon emissions within Ireland is predicated on the implementation of an EU mandated nZEB energy standard which defaults to ‘cost optimality’ generic solutions such as an A3 rating for new builds, and a B2 rating for renovations. It is estimated that 500,000 existing buildings will need to be refurbished in this way, within 10 years and that 60% of these are urban in nature. Despite such extensive resource use, the nZEB standard is not set to significantly reduce operational energy which will, in conjunction with 950,000 new electric cars being operational by 2030, place a significant burden on our increasingly decarbonised electrical power grid. Such challenges present opportunities. One opportunity is to significantly expand the renewable capacity of the grid and strengthen its European interconnectivity, while another is to remake our rural market towns and villages with energy considerations and fabric at the centre of the process. Doing both offers an optimal solution. We can amplify societal benefits, community empowerment with grid resilience and community ownership of utilities, efficient local use of energy and low carbon transport. It so doing we ensure buildings and power grid, capable of effectively serving our 2050 energy needs.
Difference of cooling use during sleep between elderly and young people
Authors: Umemiya N , Terao K , Chen Y 
Published: December 2021

Abstract
In Japan, nearly 80% of heatstroke occurrences in recent years have involved people older than 65 years old. This study surveyed the actual use of cooling by elderly people at sleep time compared to those found for younger people. Results revealed the followings.
1) Ratios of cooling use at sleep time were 30.8% for elderly people and 57.4% for younger people. The respective ratios of natural ventilation use at sleep time were 39.9% and 32.4%.
2) Average wet bulb globe temperatures (WBGTs) of bed rooms during sleep were 26.9°C for elderly people and 26.4°C for younger people. 3) Elderly people feel warmer than younger people but they feel more thermally comfortable. 4) Sleep scores were 49.7 for elderly people and 48.5 for younger people. No difference was found for the frequency of night waking or the Sleep maintenance score, but the Fatigue recovery score showed the greatest difference between elderly and younger people.
Research on Monitoring Technology of Intelligent Computer Information Security
Authors: Liang Ren , Zhang Bangwen 
Published: December 2021

Abstract
At present, the development of science and technology in our country is very fast and quickly occupied the larger economic market, at the same time, it also draws great attention in the communication industry. With the development of science and technology, computer technology has attracted the attention of the majority of people in the society with the major concern that whether it can truly keep customers’ privacy. Network information security, for national enterprises or the government, is crucial, but it is difficult to use information in the process of absolute confidentiality. Therefore, in today’s network research and development, it is necessary to carry out more rigorous processing of information to ensure that the information is not leaked during the use of the network. In the actual application process, the information should also be privatized. We can apply the computer security monitoring information network technology to protect information security, reduce virus invasion in order to ensure the green and healthy network. This paper mainly studies the security of the network based on the monitoring technology research while application and development prospects of the current situation of computer information security monitoring technology are described, which can be a good reference for the future construction of security information network.
Recognition of Blurring Alphabet Character on Timing Pulley Drawing Based on Halcon Image Processing Technology
Authors: Huang Bin , Liu Jun , Chen Mingbin , Fan Qidong 
Published: December 2021

Abstract
In order to solve the problem of Inefficiency in the use of manual detection of the information on the engineering drawings in synchronous belt manufacturers. This paper present a method of image processing based on HALCON. Firstly, the image will be inputted to the software platform, then the image will be processing by the means of Image enhancement, threshold segmentation and so on. Thus, the information on the engineering drawings can be recognized. This experience shows that blurring alphabet character on the engineering drawings can be recognized quickly and accurately based on Halcon. It can effectively reduce the workload, increasing the productivity.
Research on Performance Speed Regulation System of Direct Conversion AC-DC Power Conversion Device
Authors: Jiang Bin , Cao Yongcheng , Wang Chengquan , Wang Qiang , Wu Qiong 
Published: December 2021

Abstract
With the continuous development of social economy, the application market of electric motors has become more and more broad. Based on the principle of modular design, this paper designs the hardware circuit system of the matrix converter, and completes the parameter calculation of the input LC filter. The modulation algorithm needs to determine the sector and position angle of the input three-phase voltage. The DC speed regulation system powered by the conversion AC-DC power conversion technology is compared with the Buck circuit power supply system. Practice shows that the system has good static and dynamic indicators and load robustness.
Design and Implementation of Automatic Control System for Intelligent Water Dispenser
Authors: Li Bing , Ji Jinghong 
Published: December 2021

Abstract
In this paper, an intelligent water dispenser automatic control system is designed by using a microcontroller as the core. Relevant signals are collected through temperature sensor, liquid level sensor and other sensors, then send them to the microcontroller for processing and control, and use the liquid crystal display for display. Temperature, effluent and liquid level can be controlled according to their own needs, so as to realize the intelligent control of the water dispenser. The intelligent water dispenser automatic control system designed in this paper has low hardware cost and easy operation in the use process.
Reliability and Dynamic Performance Simulation Based on Relay Protection Summary
Authors: Li Fei , Zhuyuan Luochen 
Published: December 2021

Abstract
With the development of science and technology, national security and social life can not be separated from electricity every moment, and the safety of power grid is becoming more and more important. At present, the research on relay protection model in dynamic simulation of power system in China is still in the primary stage. Because the research is not deep enough, the control law of relay protection elements can not be well grasped. The failure can not be handled well. Therefore, in order to ensure the safe operation of the power system, we must first strengthen the grid structure of the power system, improve the elasticity coefficient, distribute the reserve capacity reasonably, strengthen the adjustment ability of the tie line between the major power grids, and improve the stable reserve of the power grid. In order to improve the authenticity and reliability of dynamic simulation, it is necessary to establish a set of relay protection models, which should be consistent with the actual relay protection. In this way, the stability problem in power system can be analyzed accurately to improve the reliability of power system. The relay protection model established in this paper reduces the complexity of modeling and can reflect the dynamic characteristics of power system after interference. It is of great significance to the analysis and research of power system.
Safety Supervision Method of Power Work Site Based on Computer Machine Learning and Image Recognition
Authors: Li Jiaxuan , Liu Yiyang , Wang Hao 
Published: December 2021

Abstract
China’s traditional power system has been unable to meet the needs of society and the development of The Times. Under the background of intelligence, it is necessary to reform the power industry and increase the application of mobile application technology in the power system, so as to realize the precise management of the power system. The application of mobile application technology in the field operation of electric power construction, based on computer machine learning and image recognition, is helpful to realize the sustainable development of electric power enterprises, improve the service level of electric power enterprises and promote the on-site safety supervision.
Research on Discrete Data Analysis of Vehicle Retread Tire Performance Based on Radial Stiffness Method
Authors: Qi Peng , Chu Jiangwei 
Published: December 2021

Abstract
The retreaded tires of transportation vehicles often cause delamination and tearing of the tread and carcass due to the temperature rise of the tires. For the failure analysis and rational use of the retreaded tires, a steady-state thermal analysis model of the retreaded radial tires in the rolling state is established and carried out the temperature measurement test. On this basis, the numerical simulation, simulation calculation and experimental analysis of the thermal-structure coupling field are carried out, which truly reflects the thermal stress status of the retreaded tire.
Research on Intelligent Traffic Model Based on Neural Network Algorithm
Authors: Qin Yi 
Published: December 2021

Abstract
For the national economic construction and social development, intelligent traffic safety design has a very important role. In addition, cars have entered thousands of households in recent years, and the flow of intelligent traffic has increased significantly. The transformation and design of intelligent traffic safety facilities is an important work related to people’s life safety. Building with GIS technology as the core, the computer interlocking simulation system and join the safety of the application of computer technology, network communication technology, the grading management mode, the implementation of traffic safety monitoring and management of the whole process of engineering construction in the true sense realize the standardization and systematization of safety information construction process management, so that they can master the traffic engineering construction all aspects of the data and safety information, guarantee the quality of project construction.
Prototype System for Dynamic Elastic Protection and Monitoring
Authors: Wang Rui , Ma Lei , Chang Yingxian , Liu Xin , Chen Jianfei , Liu Donglan , Zhang Hao , Huang Xiaoli , Yu Hao 
Published: December 2021

Abstract
With the continuous development of science and technology, security becomes an important content, both from the personal safety and information security, the most basic protection and monitoring security system already cannot satisfy people demand for security, protection and monitoring technology is relatively simple, function is not fully diversified, so the protection and improvement of the monitoring system should be constantly, so the application of dynamic elastic protection and monitoring, protective monitor the implementation of the new type will help the large-scale application of the design process and the improvement of the system. Based on the above content, this paper proposes the construction of the prototype system of dynamic elastic protection and monitoring, and deeply analyzes the principle of its construction.
Research on Routing Algorithm of Smart Grid Atmospheric Optical Communication Network in Cloud Computing Environment
Authors: Wang Yijia 
Published: December 2021

Abstract
With regard to improving the transmission rate of the smart grid atmospheric optical communication network and reducing the output error code and reality, a calculation method of the smart grid atmospheric optical communication network routing based on the operation and calculation of hybrid particle swarm optimization is studied. The link structure model of the smart grid atmospheric optical communication network is established, and the network routing nodes are explored to achieve the dynamic neighborhood and node location of the optical communication network routing. Through practice, improving the transmission rate of the optical communication network of the smart electrical network and reducing the network output timeliness and error codes can be solved by the routing calculation method.
The Design and Application of the Airborne Real-time Image Reconnaissance Computer System for Police UAV
Authors: Zhang Zhixue 
Published: December 2021

Abstract
The rapid development of UAV technology has greatly improved the degree of automation and intelligence. Aiming at the current situation and problems of insufficient aerial reconnaissance methods, this paper proposes an optimized scheme for real-time fusion of reconnaissance images and three-dimensional terrain. First, the reconnaissance target area is rendered and modeled, and then the reconnaissance image is mapped to the reconnaissance area for target tracking. Experimental results show that the system is intuitive and can effectively improve the reconnaissance efficiency of UAVs.
Application of 3D Dynamic Image Technology in Industrial Products
Authors: Zhu Changyong , Zheng Xiaodong , Zhou Chao 
Published: December 2021

Abstract
Aiming at the problems of manual testing of industrial products, a measurement method of industrial products based on three-dimensional dynamic imaging technology is proposed. The products on the production line are dynamically photographed from different angles and within a certain period of time by using cameras. Then the obtained Image denoising processing and contour tracking based on chain code table and line segment table to obtain boundary information and regional information of each enclosed area of the image. Experimental tests show that the test accuracy of this method is 100%, which is suitable for real-time detection. Fully automated research on product testing provides the foundation.
An Intelligent Shopping System based on UHF RFID
Authors: Zhang Zhankun , Liu Shenghan , Yuan Xiaomei 
Published: December 2021

Abstract
In the context of COVID-19, in order to solve the problems that customers need to spend more energy to find products in the supermarket, long checkout queue time, and cumbersome product management, optimize the shopping route of customers, accelerate the shopping process, and reduce the risk of infection; providers exceed Supplier’s sales of goods, and then timely and purposeful selection of goods, simplifying the supply chain process between supermarkets and suppliers. This article designs a multi-terminal interactive intelligent shopping system based on UHF RFID to construct The shopping cart terminal, mobile phone APP terminal, data management system terminal, and three-terminal interactive system with RFID technology as the core are developed. The design uses the UHF RFID system to identify the information in the electronic tags of the goods, and through the navigation function, helps customers locate the desired goods, and realizes the functions of identification, information display, navigation and positioning, and settlement.
Research on Optimization of E-commerce Supply Chain Management Process Based on Internet of Things Technology
Authors: Huang Bingkai 
Published: December 2021

Abstract
With the development of information network technology, online shopping has become more and more accepted and chosen by people, the demand for logistics and express delivery industry is also increasing. In today’s e-commerce era, the global logistics industry has a new development trend, called modern logistics. In modern logistics, the requirements for the important link of warehouse logistics and distribution are also increasing. The goal of supply chain management is to achieve maximum operational efficiency while minimizing capital investment, which is of great significance for e-logistics distribution. Based on this, this paper explores the application of Internet of Things technology in the supply chain management of e-logistics.
Application of 3D Modeling Technology in Engineering Graphics
Authors: Zhang Yan , Li Qinghua , He Chunshan , Pan Liai 
Published: December 2021

Abstract
With the development of technology and the progress of the times, the application methods and expression methods (including teaching methods) of engineering drawings have undergone tremendous changes. This article analyzes the reasons that restrict the three-dimensional design method can not completely replace the two-dimensional drawing in the short term, and proposes the teaching reform direction that combines the three-dimensional modeling with the traditional graphics content. It clarifies the role of 3D modeling content in graphics courses at this stage, and explains the specific methods of introducing 3D modeling in different stages of graphics courses and the choice of teaching software.