bluuebunny/crossref_metadata_2025_split huggingface dataset:
Research on the Influence of Noise to Laser Ultrasound SAFT for Lead Defect Detection
Authors: Yang Ting , He Wen , He Jianzong , He Haohui , Yuan Jinjing , Zhang Wan , Yuan Ling , Zhang Hongchao 
Published: September 2020

Abstract
Synthetic Aperture Focusing (SAFT) is one of the methods to improve the spatial resolution in the traditional acoustics field. Its basic principle is to combine a series of small-aperture sensors to replace a large-aperture sensor in order to improve the detection lateral resolution. However, the practical detection results will be affected by noise. In this paper, the time-domain B-scan signal is obtained by establishing a physical model of a lead sample containing defects and computing with finite element method. Then, the influence of noise with different signal-tonoise ratio(SNR) on SAFT imaging results is studied. The results show that SAFT algorithm has better anti-noise performance, and can still obtain good results even when the SNR is low.
Preparation and Study of Multi-Arm Azo Chiral Liquid Crystal Macromolecules
Authors: Li Ruoyan , Wang Xue , Liu Wenye , Yao Danshu 
Published: September 2020

Abstract
Utilizing 4-methoxyaniline, aliphatic diacid with different chain length, 4-hydroxybenzoic acid, 3,5-dihydroxybenzoic acid, 3,4,5-trihydroxybenzoic acid and cholesterol as raw materials, nine novel liquid crystal macromolecule were synthesized by diazotization and condensation reaction. We confirmed their molecular structure by IR spectra and observed their mesophase behaviors through differential scanning calorimetry (DSC) and polarizing optical microscopy (POM).We found that all liquid crystal macromolecule had unique texture of cholesteric phase and summarized the conciusions of which liquid crystal properties were influenced by number of liquid crystal arms and strength of flexible chain length.
An Egg-Box Sandwich Structure Static Behavior
Authors: Guo Dongling , Wang Shuai , Zhou Kaifa , Li Zhong , Chen Luning 
Published: September 2020

Abstract
There is a significant theoretical and applied value to study sandwich structures mechanical behavior in the anti-collision device due to their excellent physical and mechanical performance. A new egg-box sandwich structure device was designed. Next, the important factors (cell half-height h, cell thickness t
0 and cell width b) affecting the deformation capability and energy absorption performance of the structure were explored by the finite element method in this paper. The findings show that cell geometric parameters have a remarkable effect on structural deformation capability and energy-absorption performance. In addition, the structural displacement rises significantly with the size of cell half-height h increasing. Besides, the more quickly the cell thickness t
0 rises, the more obviously the displacement and the stress of the structure decrease. Also, with the size of cell width b gradually enlarging, the displacement and the stress increase at first and then decrease. When cell width b is 50mm, the structure has extraoridnary deformability and energy-absorption characteristics. Thus, the study of the parameters of the egg-box sandwich structure can provide some effective inspirations for the design of vehicle anti-collision device.
Application of Self-Healing Intelligent Polymer Materials in Anti-aging Research
Authors: Huo Lianyi , Allman Alan , Chen Siming 
Published: September 2020

Abstract
The self-healing materials come from the bionic research of the self-healing phenomenon of the organism. Self-healing materials can self-repair and restore some mechanical properties when damaged. With the development of material science in recent years, more and more attention has been paid to intellectual materials. Self-healing polymer materials play an important role in the field of intellectual materials because of their unique properties. It is significant for polymer materials in the engineering field to repair micro-cracks in time. This article summarizes the related characteristics of self-healing polymer intellectual materials and the causes and coping modes leading to the aging of polymer materials, as well as the application of self-repairing polymer intelligent materials at home and abroad in anti-aging research, and expounds its broad prospects for development.
Study on Laser Welding Technology and Properties of Ti75 Titanium Alloy
Authors: Cao Shouqi , He Xin , Liu Wanrong , Feng Jiecai 
Published: September 2020

Abstract
For Ti75 titanium alloy with a thickness of 3mm, 10kW continuous fiber laser was used to conduct lap test on the material. By adjusting the reserved gap between two plates, laser power, welding speed and defocusing amount, the macroscopic morphology and microstructure characteristics of the welded joint were analyzed, and the tensile properties and micro-hardness of the welded joint were tested. The results show that, under the appropriate process parameters, the weld of the specimens is beautiful and the degree of oxidation is low, the tensile strength of the welded joint can reach the level of the base material, and the hardness value is higher than the base material. By adjusting laser welding parameters such as laser power, welding speed and defocusing amount, welding joint quality can be effectively controlled.
Evidence of Polarons and Bipolarons in a Chemically Pressurized Nanoparticle Bi2Ba2Tb0.5Cu2O4+y
Authors: M.E. Emetere , C. Ofulue , S.A. Afolalu , R.S. Fono-Tamo 
Published: September 2020

Abstract
Previous researches on underdoped and overdoped Bi-2212 superconductor have shown that its mechanism follows the polarons-bipolarons theory of superconductivity. In this study, a chemically pressurized Bi-2212 compounds was synthesized and characterized. It was observed that phase analysis reveals the unique route of electron flow within the polycrystalline sample. The transmission electron microscopy (TEM) shows the presence of static and dynamic localizations that proves the possibly presence of Bose-Einstein condensation of inter-site bipolarons. This study on chemically pressurized Bi2Ba2Tb0.5Cu2O4+y compound has shown that the generation and dynamics of polarons and bipolarons are associated to the pentavalent post-transition nature of bismuth.
Study on the Development Strategy of Forest Movement from the Perspective of Forest Health
Authors: Shi Yanlei , An Yonggang , Sun Weiwei 
Published: September 2020

Abstract
With the rapid development of economy and the improvement of life quality, people enjoy the achievements of modern civilization, at the same time, some chronic diseases and sub-health problems emerge, which have seriously affected people’s health. As a new tourism industry, forest health is gradually becoming a focus. Based on the perspective of forest rehabilitation, this paper will sort out and classify the forest movement in the rehabilitation project, analyze the development strategy of forest movement and put forward feasible suggestions.
Solder Joint Structure of Sn-58Bi Solder Paste with Epoxy-based Flux
Authors: Li Qingyang , Yang Xiaojun , Li Chengfei 
Published: September 2020

Abstract
Non-clean soldering technology and low temperature bonding will be of great significant for applications in electronic industry. A curable solder paste containing epoxy-based flux and Sn-58Bi solder powder was developed. The solder joint covered by cured epoxy shell can be obtained by soldering process. The thermal-curing process of the curable flux was monitored by DSC to ensure the wetting and metallurgical connection between Sn-58Bi and Cu substrate. The microstructure characteristics of the solder joints were analyzed by metallurgical analysis and SEM observation. The factors influencing the structure of the solder joints were analyzed and discussed.
Design and Application of the Protection Casing in Boiler of Power Plant
Authors: Yang Hongqiang 
Published: September 2020

Abstract
Based on the load characteristics and failure mode of the protective casing in boiler in power plant, its design principle and management strategy were put forward. The protective casing shall be configured in the areas with different temperature medium mixing, such as boiler drum water supply pipe, recycling pipe, balance vessel pipe, superheater and desuperheater header, desuperheater spray pipe, etc. The structure and material of the casing shall be able to avoid the thermal stress directly acting on the component body. In terms of application management, visual inspection and nondestructive surface testing shall be carried out for the casing and its connecting areas in which the key parts of inspection included stress concentration areas, such as welding joints, grooves, hole edges and welding defects during equipment maintenance. Different methods such as grinding and welding and reaming and replacement and others are used to deal with casing defects according to its severity. The feasibility and reliability of the above design principles and application and management strategies were proved by several engineering examples.
Research and Optimization on PID Parameters for Driving System of a Novel Rope-Crossing Robot
Authors: Zhao Yihui , Qin Xuan , Chen Min , Liang Qinghua 
Published: September 2020

Abstract
A novel crossing-rope rescuing robot based on the working mechanism of the cam type ascender is designed in this paper. The mathematical model of the driving unit is established in order to get high driving performances, and self-tuning method of PI or PID parameters are discussed based on genetic algorithms. The case study shows the effectiveness of the model using GA optimization toolbox.
Finite Element Analysis and Optimization of CBY-100 Gear Pump Body
Authors: Guo Fengquan 
Published: September 2020

Abstract
The research of Gear Pump lightweight can save material and reduce weight on the Premise of meeting performance requirements. Use ANSYS14.0 Software finite element analysis CBY-100 gear Pump body, the Stress and Displacement of QT450-10 material Pump body were analyzed to meet the requirements of strength and rigidity. The same method of analysis, the Stress and Displacement of the Pump body are optimized to determine the optimal structure size which meets the requirements of strength and rigidity; the Stress and Displacement of ZL111 cast aluminum Pump body also meet the requirements of strength and rigidity, complete the lightweight design of gear pump. CAD improves research efficiency, reduces research cost and promotes technological innovation.
Research on Crack Classification Method of Cement Concrete Pavement
Authors: Ying Hong , Tian Wenkang , Dong Haoyin , Li Jiaxin 
Published: September 2020

Abstract
Crack classification is always important content of crack detection. Unlike complex method on asphalt concrete, a simple crack classification method based on shap, size and geometry of crack is proposed. Cracks in cement pavement were divided into four types: corner cracks, longitudinal cracks, transverse cracks, broken plates in which there are the parallel-fractured type and the cross-fractured type, and the test show that the correct rate reach to 90%.
The Influence of Sea Water Content on the Shear Strength of Reinforced Concrete Beams
Authors: Elviana  , Saputra A , Sulistyo D 
Published: September 2020

Abstract
Reinforced concrete structure has very sensitive behaviour with the impact of seawater content. This work will describe about the effect of seawater content on the shear strength of reinforced concrete beams. Previous research focused on studying effect of seawater content on compression strength, tensile strength, flexure strength, and bond strength in concrete. A review of shear failures conducted by previous researchers without getting an effect on seawater content attacks. Reinforced concrete beam has measure on 1000×200×400 mm. Seawater content attack is given during the treatment process of reinforced concrete beams. Control testing is carry out by treating on fresh water. Stages of testing include testing the basic materials of concrete, immersion in sea water or fresh water, compression strength testing with cylindrical specimens on concrete age 28 and 90 days, as well as shear strength testing. Therefore, the aggressive nature of seawater which can cause micro crack in concrete pores, so that the shear strength that treated using sea water for 90 days has decreased by 10.70% from treatment using fresh water. The decrease in strength that occurs in the shear strength of reinforced concrete beams is not recommended in planning because it can risk to construction.
The Effect of Beach Sands to Replacement of Fine Aggregate with Addition Filler of Ash Cane on the Asphalt Mixture on Marshall Characteristics
Authors: Pratama G N I P P , Najihan H F 
Published: September 2020

Abstract
The purpose of this research is to know the effect of beach sand as a substitute for river sand in a mixture of concrete asphalt against the characteristic values of the marshall and to determine the effect of adding sugarcane ash filler with the percentage of ash filler 0%, 5%, 10%, 15% on the concrete asphalt mixture against the characteristic values of the marshall. This research is an experimental study using fillers in the form of sugarcane ash filler with varying levels of variation in the amount of 0%, 5%, 10%, 15%. The specimens using AC-BC mixture was then tested using the Marshall method values of stability, density, flow, VIM, VMA, VFA, MQ. The results of this study indicate that the addition of sugarcane ash filler and the use of beach sand as a substitute for river sand affect the value of the characteristics of the marshall. The more filler levels used in the asphalt mixture, the greater the value of stability and MQ. While the flow value, density, VIM, VMA, VFA are getting smaller. Other factors that influence marshall characteristic values are asphalt content used, aggregate gradation, temperature in compaction, mix quality, and the process of mixing asphalt.
Decision Support System for Selecting Type of Moveable Dam Gate to Handle Tidal Flood Issued (A Case Study in The Parid River, Cilacap, Indonesia)
Authors: Adi H P , Wahyudi S I , Ni’am M F 
Published: September 2020

Abstract
Cilacap is one of the regions in Indonesia in the southern coastal region bordering the Indonesian Ocean. In the coastal areas of Cilacap including Kawunganten district, there are frequent floods due to sea level rise. Tidal flood problem in Cilacap can be overcome by constructing a moveable dam. The selection of moveable dam gateis needed so that it can be work optimally. Data in this study were obtained through a questionnaire and distributed to respondents who were experts in the field of water. There are 5 criteria used to select the type of moveable dam gate, namely material, function, operational and maintenance, cost and location. There are 4 alternatives of moveable dam gatenamely flap gate, radial gate, sliding gate and rubber dam. The results of the questionnaire were then processed using Analytical Hierarchy Process. The results showed that the most important criteria to select the type of moveable dam gate is cost (0.273). The best alternative of moveable dam gate based on all criteria is flap gate (0.291). Movable dam with flap gate became the priority because it is easy to operate and low cost. The best location for moveable dam placement is before Ujungmanik Bridge with a score 0.376.
The Utilisation of the Numerical Hydrodynamic Model to Face Rob Floods in Coastal Areas in the Industrial Revolution Era 4.0 at East Java Indonesia
Authors: Hermawan S , Hans O , Gunawan C , Tjandra D , Purnomo J 
Published: September 2020

Abstract
Global warming has impacted the sea-level rise. Then it caused the Rob flooding in coastal areas. The research location is in Rob floods area in Tegalsari Hamlet, Jabon Subdistrict, Sidoarjo that have damaged seaweed cultivation, and estimated losses reached 5 billion rupiahs in early 2018. Therefore, it needs to do research numerical hydrodynamic models to prevent this flood. However, the devices for measurement data are too expensive. This research aims to utilise economical devices measurement based on the industrial revolution 4.0 with numerical hydrodynamic methods models in the field of civil engineering. This model is an approach to estimate the hydrodynamics of coastal waters such as tides, currents and water levels. To simulate the hydrodynamic model, for nearshore bathymetry data are gained from sonar and offshore bathymetry data from GEBCO. The simulations utilise open-source Delft3D software using the Navier-Stock formula. The outcomes prove that hydrodynamic simulation models can be used to estimate sea-level rise for the next few years in coastal areas. Thus, the determination of the type of construction of civil engineering buildings that are strong and environmentally friendly so that publics do not cause huge losses and make coastal communities resilient to disasters.
Kamikatsu Japan’s Ecovillage Conceptual Framework for Environmental Management (Case Study: Lake Ciburuy, West Java, Indonesia)
Authors: Sidjabat F M , Ilmi A 
Published: September 2020

Abstract
Municipal solid waste production is increasing in all conservation destination in Indonesia, as the world’s second biggest plastic waste contributor to the oceans. Thus, the environmental management is needed to evaluate and create the future plan to overcome this problem, one of them is the Eco-village. A successful Eco-village is in Kamikatsu (Japan), where the society is well-educated about the environment and sorting their own waste properly. In this study, Japan’s zero waste village in Kamikatsu will be a role-model for the Eco-village Conceptual Framework. The method in this study are literature review and field survey. Ciburuy village definitely has the potential to achieve sustainable and environmental-friendly society, starting from proper solid waste management. However, the lake is becoming shallower due to the 20 residential settlement waste that has polluted the lake, and the open dumping and burning activities are commonly seen in some region. The result are discussed about the: (1) Ecovillage and Solid Waste Management Aspects Review, (2) Zero-Waste Ecovillage Kamikatsu, Japan Review, (3) Conceptual Framework for Ciburuy Village, and (4) Impact on Society (Environmental Education Plan). This sustainable and environmental-friendly management plan are projected to give positive impacts for society and the conservation nature in Lake Ciburuy.
Protecting Riverbank’s Environment Towards Scour with Combined Reinforcement of Gabion and Tetrapod: a Laboratory Model Study
Authors: Nayono S E , Prabowo Y B , Wibowo D E , Purwantoro D 
Published: September 2020

Abstract
The purpose of combined reinforcement installation is to direct the water flow and to reduce the scour process in order to protect the riverbank. The study was conducted by employing a laboratory model using a trapezoidal flume/channel with dimensions of 0.8 m width and 0.5 m height. The length of river bend model was 5 m. Observation was made with a constant flow rate of 7.07 liters/second. Tetrapod and gabion were installed at the angle of 45° and a distance of 51 cm. The running duration of installation variation was 180 minutes each. The results of the test showed that the river model with tetrapod-gabion-tetrapod reinforcement experienced an average scour of 4.16 cm for the beginning, 1.08 cm for the middle and 3.3 cm for the end. The gabion-tetrapod-gabion reinforcement can be considered as more effective reinforcement combination to reduce scour with an average scour of 4.03 cm in the beginning of the channel, 2.64 cm in the middle of the channel and 1.97 in the end of the channel.
Contribution of Organizational Commitment to Improving Employee Performance in Building Project
Authors: Susilowati F , Azis H 
Published: September 2020

Abstract
Organisational commitment has a significant role in enforcing the employee performance. Since 2014, Infrastructure Project Acceleration was declared by the Central Government. The study was conducted to provide an overview of organizational commitment and employee performance to see the relationship between the two more clearly. Analysis of the data used in this study is processing the results of the questionnaire with descriptive statistics, regression analysis, and correlation using SPSS. The results indicate that organizational commitment is included in both categories with a percentage of 72.63% while employee performance is in the good category with a percentage of 78.94%. A linear regression analysis obtained by the form of a linear line equation Y = 55,453 + 1,209X which states that the relationship between organizational commitment and employee performance is positive. Correlation calculation results show that organizational commitment has a strong relationship to employee performance that is equal to 0.610. While the coefficient of determination, organizational commitment affects the performance of employees by 37.2% the remaining is influenced by other factors. The results of this study can be used to help policymakers in a company to be able to support employee commitment to realize good employee performance to support sustainable infrastructure.
Curriculum Reconstruction for Education and Training of Electrical Engineering For Construction Employment in Indonesia
Authors: Ali M 
Published: September 2020

Abstract
The main objective of this article is to discusses curriculum reconstruction for education and training in the electrical engineering field on building construction work. The curriculum review process is intended to meet the requirements of industrial construction and enhance the employability of students to do the job in electrical engineering field. The method used is Dacum (Developing a Curriculum) by systematically analyzing positions through brainstorming with experts in construction companies and electrical engineering education. The curriculum has been reviewed extensively in order for the program to be more relevant and focused on the needs of the program. The results showed the curriculum that needed to be developed in educational and training institutions in the electrical engineering field on a construction job can be divided into three (3) types of job positions, are 1. Electrical job planners, 2. Electrical job inspectors, and 3. Electrical Job implementers.
Systematizing and upscaling urban climate change mitigation
Authors: Creutzig Felix , Bai Xuemei , Khosla Radhika , Viguie Vincent , Yamagata Yoshiki 
Published: September 2020

Abstract
The question of what cities can contribute to mitigation and adapting to climate change is gaining traction among researchers and policy makers alike. However, while the field is rich with case studies, methods that provide rich data across municipalities and potentially at global scale remain underdeveloped, and comparative insights remain scarce. Here we summarize contributions to the focus issue on ‘Systematizing and Upscaling Urban Climate Solutions’, also drawing from presentations given at an accompanying conference in 2018. We highlight four core areas for systematizing and upscaling urban climate mitigation solutions. First, with more and better (big) data and associated machine learning methods, there is increasing potential to compare types of cities and leverage collective understanding. Second, while urban climate assessments have mostly emphasized urban planning, demand-side action as related to both behavioral change and modified social practices relevant to urban space deserve more academic attention and integration across a diverse set of social sciences. Third, climate mitigation would be intangible as a single objective at the urban scale, and measures and solutions that coordinate mitigation coherently with adaptation and broader sustainable development goals require explicit conceptualization and systematization. Forth, all insights should come together to develop governance frameworks that translate scientific exercises into concrete, realistic and organized action plans on the ground, for all cities.