bluuebunny/crossref_metadata_2025_split huggingface dataset:
Desirable Ecotourism Plan for Pulau Ubin in Singapore, towards sustainable development to support Singapore tourism industry
Authors: Nugrohowati Nunuk 
Published: July 2020

Abstract

Introduction. Over the past 20 years Singapore people’s awareness to the heritage and ecological conservation issues had become more intensive. The people had understood what they should left for the next generation just the biodiversity conservation, so it was a good idea to conserve it from now on. Then on 20th of Desember 2001 the Ministry of National Development had decided to defer the land reclamation works at Pulau Ubin and had retained the rustic island as the nature state. The promoting Pulau Ubin for ecotourism afterwards was the most important step. Some works must be planned in order to succeed the ecotourism, promoting conservation areas as well as of supporting the local communities. Objective. To discuss about desirable ecotourism plan for Pulau Ubin in Singapore. Methods. The research methodology was explorative descriptive qualitative. Data collection methods had used interviewing technique with purposive sampling, observation technique and documentation on various secondary data related. Results. Singapore had some natural resources in Pulau Ubin among others large granite crops, the diversity of habitats on the island which is from sandy and rocky shores to mudflats, from mangrove swamps to ponds. The older regenerated mangroves stand on pulau Ketam while the largest areas spread around Sungei Besar and Sungei Batu Kekek. There is a close relationship between local communities and their rustic island as well as with the wildlife. The first Malay inhabitants being mostly fisherman, lived right on the coasts while the first Chinese inhabitants being mostly quarry workers and shop keepers, lived further inland. Many plans had been arranged in which can be used as an input in order to arrange an ecotourism plan in Pulau Ubin.
Pipeline Corrosion Protection Simulation of Cathodic Protection Method Againts Electrochemical Potential Distribution
Authors: Avianto Egi S. , Prasojo Budi , Sepfriansyah A. Ega , Imron Ali , Wismawati Endah , Moballa Burniadi , Hamzah Faiz , Rossa A.N. Ayu 
Published: July 2020

Abstract
Corrosion protection is very necessary for all steel or other types of metal, especially in buried pipes (underground construction). Direct contact between pipe materials (Carbon steel) can accelerate the corrosion rate. This is the case with the 20 inch pipe project working on the pipe installation. Initially to prevent this type of corrosion was done cathodic protection, but the result of examination was proven that there was a leakage of the potential distribution protection to the ground. Therefore it is necessary to do a distribution protection simulation to get how many anodes (magnesium package) to meet protection needs. The anode distance simulation results on the distribution of potential are carried out with the following variations: distance of every 45 meters, distance of every 30 meters, distance of every 20 meters, and distance of anodes every 15 meters. Based on the simulation results it is found that the anode distance cannot meet the minimum protection (-850milli volt) except at a distance of 15 meters. Installation of anodes at a distance of 15 meters with each pair of distance of 4.9 meters proved that the simulation results have met the minimum potential for corrosion protection. So that it can be used as a reference for installation of anode spacing for pipe corrosion protection.
Design of Coal Handling System for Filling Bungker using PID Method in Coal PLTU
Authors: Sutrisno Imam , Sudibyo Rafidan Maulana , Widodo Hendro Agus , Rifai Moch. , Santoso Agus Dwi , Sri Wahyuni Anak Agung Istri 
Published: July 2020

Abstract
The process of filling bunkers at PT PJB UBJ O&M PLTU 1 east java Pacitan is very dependent on coal handling system. In the existing system is still dependent on human resources as an operator, of course, very influential on human performance. The level of the bunker is a major problem for the continuity of the combustion process in the boiler. To support productivity, the authors make an innovative coal handling system design and monitor the level conditions in the bunker by using the PID (Proportional Integral Derivative) controller method to determine the level in the bunker. After that the condition is sent to the micro controller which then commands the conveyor and coal plough. The conveyor itself is driven by a stepper motor and the coal flow is driven using a servo motor. For combustion protection, there is a temperature sensor and a water pump in the bunker to extinguish. The level in the transmitted bunker serves as input to the PID and then the filling process is carried out by the conveyor to meet the demand for the bunker level. The accuracy rate in this system is 97.8% of the input data level of each bunker through an ultrasonic sensor. To make it more optimal all the information in the visual studio display.
Analysis of PM2.5 Transport Routes and Potential Sources of Qingdao in Winter
Authors: Gao Hang 
Published: July 2020

Abstract
Combined the mass concentration of PM2.5 in Qingdao region, with TrajStat software and the data from global assimilation system, getting the result of airflow backwards trajectory altered every 24-hour in November 2019 in Qingdao. The chief factors influenced the mass concentration of PM2.5 in Qingdao are wind speed and humidity. With the condition of lower wind speed and higher humidity causing heavier pollution. The airflow clusters in Qingdao can be classified into six types by using TrajStat software, and researchers made a series of study over each airflow direction. They also found that the particle concentration in Qingdao was mainly disrupted by the emission emitted within Shandong province, while getting a slight possibility of disruption from remote areas.
Study on Larsen Steel Sheet Pile as the Deep Base Pit Support
Authors: Yang Yang , Liu Wanfeng , Hu Aiping , Yang Zhaoqian , Shen Dilun 
Published: July 2020

Abstract
The steel sheet pile, a material featuring good quality, easy construction, high durability and strong interchangeability, has few restrictions for projects, and is therefore widely used as the deep base pit support. However, the complexity and specificity of base pit supporting demands an appropriate method to install it, which is the prerequisite of project safety. To ensure the safety, the paper studied the deformation by force and stability of Larsen steel sheet pile. It found that both indicators meet the requirements. Larsen steel sheet pile can provide effective protection for the base pit with decent performance. Therefore, Larsen steel sheet pile should be advocated in projects alike.
Seismic performance evaluation of RC frames with uniform infilled walls based on adaptive CMS
Authors: Yanjun LI , Dagang LU , Zhenyu WANG 
Published: July 2020

Abstract
In the development of performance-based seismic engineering, the capacity spectrum method (CMS) has been widely used in seismic performance evaluation because of its merits of clarity in concept and simplicity in computation. The lateral force resistance of nonstructural components and the influence of bidirectional loading are usually neglected in current seismic performance evaluation. Three archetype reinforced concrete (RC) frames were designed according to current Chinese standards and three-dimensional finite element models accounting for infilled walls or not at different modeling fidelity levels were created. Influences of infilled walls and bidirectional loading on seismic performance of RC frames are studied by CMS based on adaptive Pushover analysis. Results show that uniform infilled walls significantly improve seismic performance of RC frames. The bearing capacity under bidirectional loading is less than that under unidirectional loading. And bidirectional loading makes influences of infilled walls become somewhat inefficient.
Testing on loess collapse of expressway subgrade reinforced by lime-soil compaction piles
Authors: Li Jingshuang 
Published: July 2020

Abstract
The engineering constructed on loess ground have been threatened by loess collapse upon water. In Western China a new provincial expressway now has been built on loess ground. The depth of the loess layer is more than 20 meters. The loess ground was improved by five methods to reduce the collapsibility. The reinforcement was then verified by various in-situ tests and further tests were made on laboratory to explore the effect of ground reinforcement by lime-soil compaction piles. The laboratory tests show the dry density has increased by nearly 20% and the main reason for the increase of shear strength is the increase of cohesion index by 27% when the internal friction is basically the same. The collapsibility coefficients at different depths are examined and concluded that the collapsibility has been notably eliminated. Conclusion is drawn that the expressway subgrade shall not be influenced by reinforced loess ground.
Finite element analysis of cold-formed thin-walled steel skeleton wall with rigid diagonal braces
Authors: Jiang Zhonghua , Zhang Zheng , Feng Ruoruo , Chen Duhai , Richard Asante 
Published: July 2020

Abstract
In order to investigate the shear resistance of cold-formed thin-walled steel skeleton wall under monotonic load, the finite element analysis of six walls was carried out to obtain the shear capacity of different walls and reveal the wrecking mode of the wall. The results show that the arrangement of rigid cross brace and rigid diagonal brace in the wall can significantly improve the shear resistance of the wall, the vertical continuous splay layout with two spans has the largest lifting range.
Wind-induced Dynamic Stability analysis of Derrick with Double Flat Arm
Authors: Li Wenbin , Dong Qi , Zhou Fang , Ma Chi , Liao Yun , Ju Yanzhong 
Published: July 2020

Abstract
In order to study the stability of a derrick under fluctuating wind load, the dynamic stability analysis is carried out to get the critical wind speed in dynamic instability. Considering the effect of the fluctuating wind, the mean wind speed in dynamic instability is 39 m/s. When the height of the derrick is greater than 80m, the wind-induced vibration coefficient value of time history analysis is greater than the calculation value of GB 50009-2012 code, the vibration coefficient should be raised for derricks with a height greater than 80m, and the wind-induced vibration coefficient of flat arms should be considered separately.
Research on PC Component Quality Risk Evaluation Based on Intuitionistic Fuzzy Analytic Hierarchy Process
Authors: Deng Haiwang , Liu Jing 
Published: July 2020

Abstract
In order to further promote the development of prefabricated buildings, enrich the theoretical knowledge of the quality risk research of concrete prefabricated components, from the perspective of total quality management, the risk factors are divided into 5 aspects: personnel, equipment, system schemes, environment and raw material factors. With indicators and related descriptions, a set of risk evaluation indicator system is established. Based on the intuitionistic fuzzy analytic hierarchy process, the index weights of various risk factors are calculated, and a comprehensive quality risk evaluation model is established. The effectiveness of the model is proved by an example analysis, and the corresponding quality control points are summarized, with a view to the quality management provides a reference.
Simulation and Experimental Analysis of the Temperature Field of Flow of Airport Snow Thrower Based on CFD Theory
Authors: Chen Zhenglei , Cai Wantong , Cai Liangcai , Cen Guoping 
Published: July 2020

Abstract
It is a hot issue for airport users and researchers to pay attention to the influence of the hot air flow generated by the hot blowing snow thrower on the durability and service life of the pavement. In order to clarify the influence of hot air flow generated by hot blowing snow throwers on the temperature distribution of airport runway, this paper studies the temperature distribution of airport runway under the action of hot air flow generated by hot blowing snow throwers by CFD simulation and design of field measurement experiments. The results show that the maximum temperature of the surface obtained by the simulation method is 554.21K, the limit temperature of the surface is 539.75K and the average temperature difference is 22.64K, which verifies the accuracy of the simulation model. In view of the research results, in order to promote the application of this type of snow thrower in the airport, it is necessary to verify whether the airport roadway can withstand the action of high temperature airflow of 539.75K.
Study on rapid ecological protection of rock slope
Authors: Aocun Yunming , Lv Yapin , Wang Qingan , Xia Tianwei 
Published: July 2020

Abstract
In recent years, with the construction of domestic infrastructure and mining of ore, a large number of bare rock slopes have been produced. Failure to protect these rock slopes in time will cause driver’s visual fatigue, water and soil erosion of rock slopes, and in severe cases, geological disasters such as rockfalls and landslides, which will block roads and affect traffic and pedestrian safety. Based on the above, this article puts forward two types of slope ecological protection methods: assembled rock slope ecological protection and cast-in-place rock slope ecological protection. This method can solve the rapid greening of high and steep slope, the weathering of the slope surface, the effect of the road capacity, and the improvement of the local small environment.
Physical and Mechanical Properties of Pisha Sandstone with Different Corlors in Ordos Plateau
Authors: Zhang Xia , Zhang Hong , Wang Zhonghan , Liu Haiyang 
Published: July 2020

Abstract
Pisha sandstone with different colors is widely distributed in Ordos Plateau, showing different engineering properties. Therefore, basic physical and mechanical properties of two kinds of common Pisha sandstones with different colors (purplish red and yellow) are studied through laboratory tests. Because of the capillary pressure in the soil, the Shear resistance of Pisha sandstone will increase first and then decrease with the increase of water content; when the water content is nearly saturated, the shear strength indexes of two Pisha sandstones are significantly reduced.
Parametric Design and Aesthetics of 3D Appearance of Ancient Buildings
Authors: Jianfeng Shi 
Published: July 2020

Abstract
Ancient architectural design refers to the conservation repair and reconstruction of cultural relics and buildings as well as the design of antique-style architecture. This paper involves using the component-assembly method to perform the architectural design of ancient Chinese wooden buildings by 3D parametric means, including the application of the design method that combines modern industrial serialized group design technology contained in the above means with the trade-off of ancient building modularization. The model can be disassembled and converted into 2D engineering drawings.
Research on the Impact of Population Outflow on the Economic Growth of the Three Northeast Provinces from the Perspective of Educational Dividend
Authors: Fan Xiaonan , Chi Bo , Sun Xiaocheng 
Published: July 2020

Abstract
With the continuous expansion of population outflow, the number of labour factors in the three Northeastern provinces has greatly reduced, which has unavoidably affected the economic growth of the three northeast provinces. Firstly, this paper analyzes the current situation of population outflow and economic growth in the three Northeastern provinces, measures the current education dividend in the three Northeastern provinces on the basis of the definition of the connotation of education dividend, and according to the empirical analysis of population outflow on the economic growth of the three Northeastern provinces, makes countermeasures and suggestions on the impact of population outflow on the economic growth of the three Northeastern provinces from the perspective of education dividend.
Research on the Modeling of Optimal Allocation of Engineering Machinery Groups for Road Emergency Maintenance
Authors: Du Maoqiang , He Xiaohui , Wang Qiang , Wang Shanglong 
Published: July 2020

Abstract
To solve the problem of allocation to various places of engineering machinery groups for road emergency maintenance, the characteristics of emergency maintenance were analyzed and the emergency maintenance process queue network and Petri net model were built to simulate the emergency maintenance process. Then the calculation method of maintenance time was put forward, and the mathematical model of optimal allocation of engineering machinery groups for road emergency maintenance is established, which provides the basis for solving the optimal allocation scheme of the engineering machinery groups.
Development and application of pumping unit monitoring system based on wireless dynamometer sensor node
Authors: Luo Wang Zhinan , sheng Yin , Sujun Yang , Shihai Hua , Demin Chen 
Published: July 2020

Abstract
For the problems of the complicated installation and removal of dynamometer card detection equipment, high cost, not convenient for real-time detection, prone to failure and maintenance workload, a kind of low cost wireless dynamometer is developed. With the implement of wireless transmission gateway, comprehensive monitoring software is programmed. This system consists of a pumping dynamometer, gateway, monitoring software and indicator diagram measuring algorithm. Finally, the wireless dynamometer was installed at RenQiu oil field, and the data shows that the system works well and can be used for the long-term working and operating state of pumping oil field monitoring.
Application of Multi-group Seam Thickness Prediction in CJT Coal Mine
Authors: Rui Shan 
Published: July 2020

Abstract
Accurate prediction of coal thickness is of great significance to guide coal mine safety production. Taking the coal thickness prediction of the CJT coalfield in shaanxi province as an example, this paper selects the conventional wave impedance inversion technology and seismic multi-attribute technology to comprehensively predict the thickness of the target coal seam, and the correlation coefficient of the prediction trend of the coal seam thickness is as high as 98%. The prediction results show that wave impedance inversion combined with multi-attribute quantitative prediction of coal seam thickness is an effective method for complex geological conditions in the study area.
Study on mechanical properties of SMA silk
Authors: Yue Chuanyun , Yang Nan , Feng Yanzhong 
Published: July 2020

Abstract
Bond-slip constitutive relation between shape memory alloy wires and concrete is a comprehensive reflection of the bonding properties and it is relevant to crack width, plastic hinge rotation capacity, shear failure and theory analysis of nonlinear finite element. It has important significance of the numerical model of bond-slip of shape memory alloy concrete structure to the theoretical analysis and actual design. However, it is still in the exploratory stage of the constitutive relation between these two materials at home and abroad. This paper made the following research: Mechanics performance test of SMA. Differential scanning calorimetry test were used to get the heat transfer rate and temperature relationship diagram of the SMA wires, so the phase transition temperature of SMA was determined. On the basis of this, pull-out test was carried on to know the mechanical properties of the SMA wires.
The Hamiltonian Theroy in Viscoelastic Computations
Authors: Zhang WX , Yang LM 
Published: July 2020

Abstract
The Hamiltonian system approach is usually applied to derive the general solutions of the governing equations using the dual variables, by which the orders and dimensions of partial differential equations can be reduced effectively. However, its application is seriously confined to the problems with regular boundaries of a single material due to its analytical property. Due to the existence of energy dissipation, viscoelastic problems belong to non conservative systems, so Hamiltonian system method can not be directly applied. In this paper, the Laplace transformation method is used to transform the basic equations into the form of elasticity, and then the Hamiltonian system method of viscoelasticity is established.
Research on the Planning and Design of Sports Characteristic Town Based on the Integration of “Human Culture in Industry City”
Authors: Zhang Huili 
Published: July 2020

Abstract
With the development of economy, sports towns in China have developed rapidly in recent years, but a series of problems have appeared in the process of development. This paper analyzes the main problems existing in the planning and design of the sports characteristic town, and studies the Countermeasures of the planning and design of the sports town from the perspective of the integration of “human culture in industry city”, in order to promote the sustainable development of the sports town.
Analysis of Climate Comfort for Tourism in Kunming under Background of Healthy Living Destination
Authors: Wang Yanfang , Li Xiaolong , Cheng Xiping 
Published: July 2020

Abstract
Climate comfort is an important index for evaluating the liveability of a region, and it is also the basis for building a healthy living destination. Quantitative analysis of tourism climate comfort index was built in this paper through average temperature, relative humidity, wind speed and other climatic factors in Kunming, using Fuzzy Analytic Hierarchy Process to evaluate the tourism comfort of Kunming. The results show that Kunming has a pleasant perennial climate, a long tourism cycle and a great advantage in tourism climate comfort. The conclusions can provide scientific basis for the related work of healthy living destination.
Application of Diversion Construction Technology in Hydraulic Engineering Construction
Authors: Tao Zhang 
Published: July 2020

Abstract
Since the reform and opening up, China’s various construction undertakings have developed rapidly, especially the water conservancy engineering undertaking. As a basic industry for national economic development, it has achieved leapfrog development. Water conservancy projects play an important role in the development of China’s industry, agriculture and people’s daily life, it can promote the development of production and life, and improve people’s quality of life. Diversion construction technology is a widely used and important construction technology in basic water conservancy projects. It can reduce the impact of water flow during the construction process by using related technical measures, while ensuring the quality of water conservancy projects and improving the construction efficiency of the entire project. And other aspects have played an important role that cannot be replaced. This paper started with a brief description of diversion construction technology, and then studied the application of diversion construction technology in water conservancy projects.