bluuebunny/crossref_metadata_2025_split huggingface dataset:
Development of High Performance Aerogel Concrete (HPAC) and statistical evaluation of compressive strength for practical use in construction
Authors: Fickler S , Welsch T , Schnellenbach-Held M 
Published: December 2021

Abstract
The Institute for Structural Concrete (ISC) at the University of Duisburg-Essen and the Institute of Materials Research of the German Aerospace Center (DLR) developed a new lightweight concrete, called “High Performance Aerogel Concrete” (HPAC). HPAC is made by embedding of silica aerogel granules in a high strength cement matrix. It exhibits a remarkable relation between compressive strength and thermal conductivity. HPAC for the load bearing layer of double-leaf external walls contains approx. 50 vol% aerogel and has a compressive strength in the range of normal concrete (20 MPa – 30 MPa). Up to now, the compressive strength of each mixture was determined on three to six cubes or cylinders. The scattering of the results has not been investigated yet. For this reason, 30 test specimens of a 50 vol%-mixture have been produced in two batches. The results of the compressive strength tests were then statistically evaluated. The underlying statistical distribution was determined by the Anderson-Darling-Test. Subsequently the 5 % fractile values of the mixtures, which represent the characteristic concrete compressive strength, were determined.
Thermal resistance of the ventilated air-spaces behind external claddings; theoretical definition and a parametric study
Authors: Rahiminejad M , Khovalyg D 
Published: December 2021

Abstract
The presence of a ventilated air cavity between the external cladding and the wall core of a wall assembly can have a varying contribution to the thermal performance of the building envelope. In particular, the thermal resistance of a ventilated air-space is a dynamic parameter that is influenced by various thermo-physical parameters. In this study, a theoretical definition of the thermal resistance of a ventilated air-space behind an external cladding is introduced, employing a non-linear network of thermal resistances in the air-space. A numerical code is developed for the steady-state condition and verified with data from hot box tests available in the literature. Thereafter, a parametric analysis is performed based on the air change rate in the cavity (0 to 1000 1/h), type of the external cladding (brick and vinyl siding), seasonal variation (summer and winter conditions), and presence of the reflective insulation. The results are compared with a closed cavity to see the efficiency of the ventilation in the air-space. The results confirm that the theoretical thermal resistance of the ventilated air-space is a function of multiple factors, and its magnitude varies under different conditions.
Thermal performance of roofs suitable for developing countries in tropical climate
Authors: Čanda P , Kopecký P 
Published: December 2021

Abstract
Roof structures have been traditionally built from reed or straw in tropical climate locations. Now, traditional materials are often replaced by pure metal sheets. The roof construction is improved in terms of durability and cost effectiveness, but he roof built from pure metal sheets can cause excessive overheating of interior spaces. The aim of this paper is to compare dynamic thermal performance of different roof assemblies under real boundary conditions. For this purpose, a thermally insulated test box was built on the roof of the university. Six roof samples (0,9 m × 1,1 m) can be mounted on the roof. The roof covering made of pure steel sheet with Zn coating was the reference case. This assembly was then modified step-by-step either by change of colour, or by additional material layers of reed and earth boards, or by 2cm thick ventilated air cavity on the rear side of the sheet. In total, 18 different roof assemblies were tested in three consecutive test runs (approximately three-week periods between 07 – 09-2020). Ventilated air gap and white paint are the best adjustments to reduce heat flux. Dark colours of the metal sheet have the opposite effect. Influence of reed and earth boards was in many cases similar. One roof assembly was selected for use in real project.
An impact of moisture content on the air permeability of the fibrous insulation materials
Authors: Kosiński Piotr , Wójcik Robert , Skoratko Dariusz , Attia Shady 
Published: December 2021

Abstract
Fibrous materials are characterized by good thermal properties, but are susceptible to air filtration. Effective air and wind protection of the building envelope eliminate the problem of air penetration of fibrous materials, but there are still many buildings where this protection has not been applied. Authors investigated the effect of moisture content on the air permeability of chosen loose fibrous materials: mineral wool, wood wool and cellulose fibers. The presented results may be used to simulate and calculate heat loses in existing buildings.
Heat and moisture transfer in wall-to-floor thermal bridges and its influences on the insulation performance
Authors: Xue Yucong , Ge Jian , Fan Yifan 
Published: December 2021

Abstract
The moisture modifies the characteristics of heat transfer in building envelopes. Multiple factors, including the distinct hygric properties of various material, gravity, etc., affect the moisture content, resulting in a non-uniform distribution of water vapour in different parts of the envelope (e.g. column, beam, the main part of exterior walls). Usually, the more water vapour in a material, the higher the thermal conductivity, resulting in more heat transfers here. Moreover, condensation easily occurs where there is wet, marking such parts have risks both on structural safety and mould growth. The wall-to-floor thermal bridge (WFTB) occupies the largest area among all kinds of thermal bridges that formed by frame structures. In this study, we aimed to quantify the influence on heat loss through WFTB when the moisture transfer in envelopes is considered. The average apparent thermal resistance of WFTB (R
TB, ave) was defined to access the insulation performance of WFTB in practical application. The results of transient numerical simulation indicated that when the moisture transfer is considered, the insulation performance of building envelopes decreases significantly, while the adverse effect of WFTB on heat insulation becomes less pronounced. The results indicated that the measures of insulation for WFTB should be reconsidered when the moisture transfer is considered.
Energy use of buildings in relation to occupancy rates
Authors: Davidsson H , Chowdary S K , Gentile N , Berggren B , Kanters J 
Published: December 2021

Abstract
This paper presents basic data of the energy demand for district heating and plug loads logged by a building management system of an energy-efficient academic building located in Lund, Sweden. The data refers to the years 2019 and 2020 when occupancy varied significantly due to the Corona pandemic. The data shows that the building energy demand adapts poorly to fluctuating occupancy rates. With a possible increase of smart working in the future, building codes should account for more fluctuating occupancy rates in the modelling of the energy demand of buildings.
Curing building related illnesses by using an emissions barrier
Authors: Larsson L , Mattsson J , Lehtimaa T 
Published: December 2021

Abstract
A new type of emissions barrier was used in premises with indoor air complaints due to emissions from the buildings in question. The emissions comprised chlorophenols/chloroanisoles and polycyclic aromatic hydrocarbons (PAH) from treated wood, and volatile organic compounds (VOC), mainly 2-ethylhexanol, from PVC flooring and the glue used to paste the flooring onto a concrete slab. Attaching the barrier at the surfaces from where the emissions were spread (floor, walls, ceiling) resulted in a fresh and odour-free indoor air. We conclude that using an emissions barrier in buildings made unhealthy by moisture is an efficient way of restoring a pleasant and healthy indoor air.
Preliminary experimental research of metal-organic frameworks (MOFs) for formaldehyde dynamic adsorption
Authors: Chen Shan , Zu Kan , Fang Lei , Qin Menghao 
Published: December 2021

Abstract
Formaldehyde is a common emission from furniture and indoor decorations. Although the concentration of formaldehyde gas is not too high in the indoor environment, it is highly toxic and carcinogenic. The formaldehyde removal potential of a novel type of green and safe nano-porous materials, Metal-Organic Frameworks (MOFs), with a high surface-to-volume ratio, strong adsorption capacity, and low regeneration temperature was investigated. To date, researchers are mainly focusing on formaldehyde selectivity and detection using MOFs in low moisture circumstances. This study carried out a series of experiments to compare breakthrough curves of formaldehyde dynamic adsorption on MIL-100(Fe), MIL-160(Al), and aluminum fumarate with activated carbon. In experiments, the formaldehyde was evaporated from diluted formalin solution, dried to 30±5 % RH, and driven through different adsorbents by nitrogen. The results indicated that MOFs showed great potential for indoor air formaldehyde removal.
A large field study of relationship between indoor and outdoor climate in residential buildings
Authors: Rupp Ricardo F , Trotta Gianluca , Toftum Jørn , Andersen Rune K 
Published: December 2021

AbstractHigh-quality data on indoor climate and energy collected in buildings is required to deepen our understanding of building performance. The aim of this work was to investigate the relationship between the indoor and outdoor climate in Danish residential buildings. Field data was collected in 45 apartments from April 2019 to November 2020. Internet of things (IoT) devices were installed to record the temperature, relative humidity and CO2concentration in the central corridor of each apartment. High CO2concentration (above 1,000ppm) and overheating were observed in the apartments. The changeover between the heating mode and the free running mode occurred between 11.1 to 13.6°C of outdoor air temperature. The temperature setpoints of the heating systems were around 20.6-22.3°C, which could be useful values to feed building simulations in order to achieve more realistic predictions of indoor climate and energy. The results of this study improve our understanding of indoor environmental quality in residential buildings at a national level.
Research on Large Space Fire Monitoring Based on Image Processing
Authors: Zhang Guanghua , Cui Rongsheng , Qi Kai , Wang Bingqi 
Published: December 2021

Abstract
Fire in large space buildings has the characteristics of rapid spread and easy to ignite, which makes it difficult to extinguish fire. Therefore, the research on fire safety prevention technology of large space buildings has strong practical significance and practical value. Fire image automatic monitoring technology is based on the advantages of image processing and the high-speed operation of computer language. This paper proposes a fire monitoring technology which uses the information of flame image to analyze and judge fire. It combines computer graphics, digital image processing and computer vision technology, and one new image-based fire detection and processing technology is studied from the aspects of flame morphology and flame color.
Application Research of Mechanical Mold Design Based on Computer Aided Technology
Authors: Gu Jiren , Chen Longbo 
Published: December 2021

Abstract
There are many kinds of industrial products. Different industrial products play different roles in life. There is no doubt that they are indispensable in our life. We found that most of the production of industrial products rely on the mold industry[1]. Mold industry is also the foundation of mechanical design industry. However, the traditional mold design concept is very old. Moreover, the disadvantages of traditional mold design are also many. Based on this, the experts put forward the mechanical mold design supported by computer-aided technology. This paper presents the main application of computer aided technology in die design.
Design and Research of New Energy Technology in Electric Power Information Intelligent System
Authors: Huang Chongqian 
Published: December 2021

Abstract
After the Industrial Revolution, with the continuous improvement of people’s living standards and the great changes in science and technology, the traditional energy has been unable to meet people’s new needs of production and life and the concept of sustainable development. As a hot topic in recent years, new energy can become one of the new ways to promote the continuation of resources. The traces of the rapid development of new energy can be found in various fields related to people’s lives. Electric power information system is one of the aspects. It is well known that human beings can not live or work without electricity. Therefore, it is very important to apply new energy technology in electric power information system. This study studies from the overview of new energy technology, the overview of power information intelligent system and the application of new energy technology in power information intelligent system.
Optimal Design and Analysis of Intelligent Vehicle Suspension System Based on ADAMS and Artificial Intelligence Algorithms
Authors: Liu Jianjun 
Published: December 2021

Abstract
A complete suspension model is established, and the suspension system is simulated and optimized. The method of suspension system establishment and simulation is explained in detail, and the influence of suspension parameter changes on vehicle handling and stability is analyzed in detail. The dynamic simulation analysis of wheel parallel runout test was carried out on the system, and the suspension system was optimized by artificial intelligence algorithm. The research results provide a technical basis for the design of automobile suspension.
The UI Design of the Picture Logo of the Terminal Human-Computer Interaction Interface
Authors: Liu Ming 
Published: December 2021

Abstract
With the advancement of the information society and the development of China’s economy, enterprises to digital, information, intelligent production requirements continue to improve, the application of industrial software gradually popularized in the production of enterprises. However, in the Internet era, the research on man-machine interface design is in full rage, but the man-machine interface design of domestic industrial software has not been paid attention to. The level of industrial software interface is seriously backward, disjointed with The Times, and completely contrary to, high technology, high efficiency and other industrial execution concepts. On the one hand, this phenomenon will affect the working efficiency of the staff in the operation of the software and the user experience, reduce manufacturing enterprises related to attract talent, on the other hand can also lead to the software under the same technical level, domestic industry software products to attract customers’ ability is insufficient, in the competition with foreign brand products in bad situation.
Application of Computer Network Data Communication Technology in Production and Life
Authors: Lu Jun 
Published: December 2021

Abstract
With the rapid development of modern economy and science and technology, my country’s computer technology has also been rapidly developed. In daily life, information technology has a great impact on people’s lives, such as the large-scale use of mobile media. Essentially, mobile media is a kind of remote network communication technology. With this technology, real-time sharing of information in society can be realized. This article mainly analyzes the application of computer remote network communication technology from the current situation.
Artificial Intelligence Based Sensor Network Congestion Fuzzy Control Algorithm
Authors: Luo Jing , Xiao Xiaoxu , Wang Rongxia 
Published: December 2021

Abstract
The topology control of sensor sensor network was studied based on fuzzy control algorithm. Aiming at the dynamic changes of the topology of large-scale and heterogeneous artificial intelligence sensor networks and the incomplete information between nodes, a smart network-based congestion control algorithm for sensor networks was proposed and the performance of fuzzy control algorithms was analyzed. Based on this, a fuzzy control algorithm was designed. The algorithm fully considered the residual energy of nodes and the distribution of nodes in the network. Therefore, the reasonable election of the cluster head can be realized through the game between nodes, which effectively avoided energy holes, made the network energy consumption more uniform, prolonged the network life cycle, and optimized the network topology.
The Border Attack Defense System is Software-Based
Authors: Wang Rui , Chang Yingxian , Ma Lei , Zhang Hao , Liu Xin , Chen Jianfei , Liu Donglan , Zhang Yong , Su Bing 
Published: December 2021

Abstract
Now the computer has been completely towards the public, the network in daily life is more and more widely used, but at the same time, the potential network security problems are also more and more serious. Some sophisticated computer people in order to make money, crack other personal users or company information, a variety of network attacks one after another. Cyber attack has become an extremely feared existence for ordinary people because of its wide range of attacks, strong attack force and obvious hiding effect, which seriously threatens the security of personal information network. If attacked by this kind of attack, the loss borne by each person or company is immeasurable. In order to maintain network security, the defense system is also improving day by day, and finally presents software. This paper mainly makes a detailed understanding of the border attack and defense system, and analyzes the main reasons and inevitability of the software of the border attack and defense system.
Design and Research of Firewall System of Communication Department Based on Network Information Technology
Authors: Wang Xing , Zhao Tao 
Published: December 2021

Abstract
In the past, the structure of traditional firewalls was similar to that of checkpoints, and the design structure was relatively simple. At the same time, it is also convenient for subsequent maintenance. As an isolation technology, it can be accessed by people with consistent identity information. But for some relatively high-level data information, using traditional firewalls, foreign intruders can easily obtain relevant information. This article chooses to use the working mechanism of network information technology, and then analyzes the hardware structure of the firewall based on the IPX2400 processor. Finally, a preliminary design of a firewall system for the communications department based on the IPX2400 processor is implemented, and its packet filtering function is realized.
Research on Environmental Art Design Based on Computer 3D Animation Technology
Authors: Yin Ni 
Published: December 2021

Abstract
In order to improve the ability of environmental art design, a method of environmental art design based on computer three-dimensional animation technology is proposed, and a three-dimensional animation imaging model of environmental art design is constructed. Combining the RGB decomposition technology to extract the color components of the environmental art design three-dimensional animation image, use the color template space projection algorithm to perform the block fusion processing of the environmental art design three-dimensional animation image. The simulation results show that the three-dimensional recognition ability of environmental art design using this method is better, and the performance of feature reconstruction is better, which improves the three-dimensional visual presentation ability of environmental art design.
Research on the Application of Interaction Design in the Functional Design of Intelligent-home Products
Authors: Zhang Linjing 
Published: December 2021

Abstract
The networking operation of intelligent-home products can expand more functions and bring consumers more in-depth interactive experience. The effective integration of interaction design, intelligence and info tech in intelligent-home products can effectively solve the shortcomings and problems of home market products. Based on this, this paper first analyses the concept and value of product functional interaction design, then studies the functional design of intelligent-home products based on interaction design, and finally gives the utilization strategy of interactive design in the functional design of intelligent-home products.
Research on the Application of Computer BIM Technology in Geotechnical Engineering
Authors: Shang Haijing , Yang Mingling 
Published: December 2021

Abstract
BIM Tech on account of its three-dimensional, intuitive, visual, reconfigurable and other aspects of the typical characteristics, has gained more and more attention in the field of architecture and civil engineering, and obtained more in-depth research and application. On account of this, this paper first analyses the concept of IM tech and its utilization value, then studies the specific utilization of computer BIM Tech in geotechnical engineering, and finally gives the utilization strategy of computer BIM Tech in geotechnical engineering.
Application of Intelligent Manufacturing Technology in the Field of Ship Design and Manufacturing
Authors: Wang Peiyu 
Published: December 2021

Abstract
With the rapid development of information technology and its gradual penetration into the traditional manufacturing industry, modern industry has entered a period of intelligent manufacturing. In order to firmly grasp this brand-new development opportunity, various industries in our country are accelerating innovation and development, forming a number of brand-new industries and models. At this stage, the global shipping volume is increasing slowly and the endogenous power is lacking. The shipbuilding industry occupies a large proportion of my country’s traditional industries. It not only provides technical equipment for the development of marine resources and national defense construction, but is also an important channel for world trade, driving the development of many key industries, and it is a modern comprehensive industry with a huge industrial chain. Sex industry. The shipbuilding industry can drive the rapid development of the local economy and play an important role in promoting labor employment and ensuring the safety of coastal defense. In recent years, my country’s foreign trade has been growing at an alarming rate, which has provided better development opportunities to a certain extent. The industry has high international competitiveness.
Research on Durability Design of Concrete Structure in Building Engineering Based on Computer Technology
Authors: Yang Guang , Guan Hongjie , Ma Wenna 
Published: December 2021

Abstract
With the continuous progress of The Times and the rapid development of society, great changes have taken place in the way people live, study and work at present. Due to the continuous improvement of people’s living standards, people now have higher and higher requirements for their living environment. People are not only satisfied with the food and clothing they used to have, but also pay more attention to the pursuit of spiritual homes. In our country, the computer technology and the construction industry have always been the focus of our national attention, because they are closely related to the lives of ordinary people. In the construction of the concrete structure is an indispensable building material in the construction process, based on the status of the concrete structure in the construction process, the relevant work technology researchers on the concrete structure of a series of characteristics have been related to the development of the function of the continuous exploration and analysis.