bluuebunny/crossref_metadata_2025_split huggingface dataset:
Study on the Influence of Damping Hole of DCT Complex Valve Body Lubricating Oil on System Dynamic Characteristics
Authors: Wang Li , Qin Yiwei 
Published: June 2020

Abstract
The dual clutch automatic transmission (DCT) technology can realize powerless interruption of the shifting process, and its hydraulic control system is a complex hydraulic valve body. The cooling lubricating oil circuit is very important for the lubrication of the clutch and the adjustment of the transmission oil temperature. This paper mainly analyzed the influence of the damping hole on the dynamic characteristics of the system in the lubricating oil circuit. Based on AMESIM software, the simulation model of the lubrication regulating main valve was established. The influence of the size of the damping hole on the output pressure, the lubrication flow of the output clutch and the lubrication flow of the output gear shaft were analyzed under the flow rate step condition. Combined with the vibration of the system, it was found that the reasonable diameter interval of the damping hole was 1.8∼2.3 mm.
Fire detector based on serial FBG temperature sensors optical cabling
Authors: Junwei Dong , Weiping Liu , Cui Tian , Xida Ye 
Published: June 2020

Abstract

Absrtact. Fiber Bragg Grating (FBG) is directly made into low-cost and high-efficiency cable with temperature detection function without secondary packaging. Using the linear relationship between the reflected wavelength of FBG and temperature in the cable, the temperature is calculated, and the alarm of fixed temperature, differential temperature and consistency is determined by software. This system is realized through the design of optical cable structure and algorithm.
Applied Research of Industrial Robots in Automotive Intelligent Manufacturing Production Line
Authors: Wang Weizheng 
Published: June 2020

Abstract
In recent years, most Chinese car manufacturers have seen the use in industrial robots as the key to intelligent transformation in the car manufacturing industry. Industrial robots consist of several major divisions of labor, with the technical advantages of a small footprint and high availability, which can improve the work efficiency of the automobile manufacturing industry. Therefore, it is fully utilized in various fields of intelligent manufacturing production lines for automobiles, such as material mixing, car body painting, car body welding, and vehicle assembly. This article introduces the application status and characteristics of industrial robots and describes industrial robot applications in the intelligent manufacturing line of automobiles.
Study on Surface Modification of Aluminum Alloy Electron Beam for Surgical Medical Devices
Authors: Li Xinkai , Zhang Chunxiao , Yao Xing , Han Yi , Wei Minsheng , Ji Yumin , Song Qi 
Published: June 2020

Abstract
Surgical and medical devices need excellent lightweight, surface abrasion resistance, corrosion resistance and other characteristics. In this paper, the surface modification of 6061 aluminum alloy commonly used in medicine is studied. The method of electron beam cladding 1Cr13 stainless steel powder is used to improve aluminum. The surface hardness and abrasion resistance were studied. The influence of electron beam process parameters on the cladding effect was studied. This method Provides new ideas for upgrading the industrialization of medical devices.
Research and Design of Field and Office Work Integration System for Historical Buildings Conservation: Case Study on Guangzhou
Authors: Yang Weijun , Li Qixing , Guo Liang , He Huagui 
Published: June 2020

Abstract
In recent years, GIS-based technologies has been applied in multiple fields of study, including historical building conservation. In the field of historic building conservation, GIS technology is mainly used for the spatial information display and spatial analysis of buildings. In terms of traditional methods of historical buildings information collection, GIS technology is mainly applied in the functions of data warehousing and statistical analysis, but barely in the early stage of data acquisition. This article introduces the technology of historical building information acquisition based on mobile GIS device, as well as the integrated data acquisition system, which changes the pattern that separates field and office work. The field collected data is directly imported into the data processing system on the basis of unified data standard, which shortens the intermediate link and integrates the field and office work. As a result of the improved pattern, the efficiency of historical building conservation will be significantly increased.
Application of airborne lidar technology in transmission line survey
Authors: Ren Yu , Chai Linjie , Guo Jiyuan , Ren Yaning , Liu Jian , Shen Xiangliang , Li Guangyi , Xing Lin 
Published: June 2020

Abstract
In the survey of transmission line, the traditional aerial survey method is difficult to get the surface elevation through the vegetation, corn field and other surface attachments, while the manual survey method has the disadvantages of low efficiency and high cost in mountainous and hilly areas. In this paper, the airborne lidar surveying and mapping technology is used, combined with a 110kV transmission line engineering survey example, generating high-precision surface DEM based on the point cloud classification results and extracting the single wood information based on the point cloud to accurately count the amount of tree felling. A panoramic simulation line corridor engineering geographic information system is established, which provides technical support for the route scheme optimization and plane section extraction, and is applied to the project. It is of practical significance to evaluate the effect.
Investment demand forecasting model of power grid based on different development paths
Authors: Yuqing He , Qin Jiang , Shujuan Chen , Yingjie Li , Xing Zhang 
Published: June 2020

Abstract
Under different economic and social conditions, the development of power grid faces different development foundations, development speeds, development forms, and development goals. The development path and development pattern of the power grid have many commonalities in a certain space-time range, and there are also some natural differences. In terms of analysis of the development path of power grids and the study of the quantification system, which considering the spatial and temporal differences, the research on the spatial-temporal matching of the development path characteristics of the provincial, city, county (district) level units and the prediction of the development pattern is insufficient, and it is impossible to predict the provincial, city, county (district) level. According to the development path characteristics and development forms of provincial, city, and county-level units, this paper establishes a quantitative relationship between grid investment and differential indicators of grid development paths. Based on the analysis of Hunan Province, Changsha, and Changsha County, it is proved that the power grid investment demand prediction models based on different development paths can solve the personalized demand for investment due to differences in power grid development paths, improves the analysis dimension and the level of refinement of investment demand forecasting, and it also provides a reference for forming a scientific investment decision system.
The Design of Off-grid Home Photovoltaic Power Generation System Considering Multi-weather Conditions
Authors: Yu Haixin , Liu Dengfeng 
Published: June 2020

Abstract
In the traditional fixed-installed off-grid photovoltaic power generation system, there are disadvantages such as insufficient solar energy collection and low solar energy utilization. In order to be able to effectively develop and utilize solar energy, the method of solar position tracking is generally used. In this paper, a single-chip microcomputer is selected as the main control chip, and a photovoltaic power generation system that combines two methods of photoelectric tracking and computational solar tracking and takes into account various meteorological factors is realized. The latitude and longitude information and time information collected by the single-chip microcomputer are used to calculate the sun position, and the photoelectric position is used to monitor the sun position. The design can automatically change the tracking scheme according to the weather conditions, so that the tracking system can run stably under various weather conditions.
A Low Input Voltage Charge Pump for Energy Harvesting
Authors: Li Yi , Huang Sheng ming , Duan Quanzhen 
Published: June 2020

Abstract
This paper proposes a low input voltage charge pump using 0.18um CMOS process for energy harvesting. There are two main sections in the charge pump system: Low Voltage Charge Pump (LVCP) and High Voltage Charge Pump (HVCP). In the LVCP, a negative charge pump is utilized to improve the efficiency at low input voltage, Dynamic Body Bias (DBB) and switch-conductance enhancement techniques are applied to a unit stage of the two-stage charge pump. In the HVCP, the charge pump circuit utilizes charger transfer switches (CTS) with a complementary banch scheme to significantly reduce undesired charge transfer, and an optimized gate control strategy is applied to further decrease the power loss caused by undesired charge transfer. The simulation result demonstrates that the proposed circuit can achieve 97% voltage conversion and drive 800uA load current at 0.6V input voltage. In the region of 0.4V to 0.6V input voltage, the circuit performs well with the load resistance of 10K ohms.
Methane Monitoring in Kitchen Based on ZigBee Antenna Array
Authors: Wang Zhili , Zhao Shenglei , Cheng Xuezhen 
Published: June 2020

Abstract
With the obvious improvement in people’s quality of life, the use of natural gas is becoming increasingly common. Household natural gas has hidden safety hazards while being hygienic and convenient. There are many gas explosion accidents every year, and life and property are seriously damaged. When the natural gas body leaks a little and the methane concentration in the air is extremely low, the methane sensor may fail to report, and the signal is weak or the early warning signal cannot be processed in time, which brings hidden dangers to the accident of gas explosion. In this paper, an optimized array of antenna arrays is designed based on the ZigBee network. Use multiple MQ-4 sensor arrays to detect the methane concentration in the kitchen, and send the weak signals collected by the four methane sensors to the ZigBee router in the same direction through the four antennas of the ZigBee module. The router timely and accurately transmits to the ZigBee coordinator and uses ZigBee network technology to upload the alarm information to the cell monitoring center through wireless. The simulation test results show that the diamond antenna array can quickly detect the change of methane concentration, and has high sensitivity and reliability.
An evaluation of advanced baseline imager fire radiative power based wildfire emissions using carbon monoxide observed by the Tropospheric Monitoring Instrument across the conterminous United States
Authors: Li Fangjun , Zhang Xiaoyang , Kondragunta Shobha , Lu Xiaoman 
Published: June 2020

Abstract
Biomass-burning emissions (BBE) profoundly affect climate and air quality. BBE have been estimated using various methods, including satellite-based fire radiative power (FRP). However, BBE estimates show very large variability and the accuracy of emissions estimation is poorly understood due to the lack of good reference data. We evaluated fire emissions estimated using FRP from the Advanced Baseline Imager (ABI) on GOES-R (Geostationary Operational Environmental Satellites-R) by comparing with the Sentinel 5 Precursor TROPOspheric Monitoring Instrument (TROPOMI) Carbon Monoxide (CO) over 41 wildfires across the United States during July 2018—October 2019. All the ABI FRP-based CO and TROPOMI CO emissions were significantly correlated and showed a very good agreement with a coefficient of determination of 0.94 and an accuracy of 13–18%. We further reported a CO emission coefficient of 29.92 ± 2.39 g MJ−1 based on ABI FRP and TROPOMI CO, which can be used to directly estimate BBE from FRP observed from satellites. Based on the CO emission coefficient and ABI FRP, we finally estimated a monthly mean CO of 596 Gg across the Conterminous United States for June—September 2018.
Resilient modulus of Advera® warm mixture asphalt incorporating reclaimed asphalt pavement (RAP) materials
Authors: Taher M N M , Aman M Y 
Published: June 2020

Abstract
This paper presents the effects of using reclaimed asphalt pavements (RAP) materials in asphalt mixture as an alternative solution to overcome the cost of construction and rehabilitation works as well as assessing the resilient modulus characteristic of control and modified mixtures respectively. To achieve this aim, four series of mix portions with 4%, 5%, 6% and 7% Advera® were blended into asphalt binder. Then the modified binder were added into mixture with four series of the mixture replacement with 10%, 20%, 30% and 40% RAP. Resilient modulus test was performed at different mixing temperature (135 °C and 125 °C) and test temperature (25 °C and 40 °C) respectively. Consequently the quadratic model for resilient modulus was established. The optimum of Advera® content was found to be 5%. At 5% Advera content, the resilient modulus of the modified RAP mixture was significantly improved.
A conceptual framework for development of safety performance functions for rural roads in Indonesia
Authors: Dermawan W B , Tjahjono T 
Published: June 2020

Abstract
Road safety policies provide important guidance for actions to enhance road safety, but often absence an extensive conceptual framework, system theory, and evidence-based study and practice. One effort to enhance road safety is to decrease the number of road accidents. By knowing the accident data at a location, transportation planners can conduct analysis so that they can provide recommendations for improving road safety. However, the prediction model in Indonesia in some studies is more local purposes. Meanwhile, the prediction model used in various countries needs to be adapted to the conditions of Indonesia. The objective of this paper is to integrate all components that contribute to accidents. The work identifies tools that are most and least widely used for components. This framework also provides guidance for developing safety performance functions, what the model is like, what the variables are and what conditions need to be considered according to Indonesian conditions. It is expected that the developed framework can be applied to improve the development of safety performance functions for rural roads in Indonesia.
Identifying the Environmental Strategies in Construction Site for Malaysian Contractors in Johor
Authors: Abidin N A Z , Ghani A H A , Mohammad H 
Published: June 2020

Abstract
The construction industry needs to make a significant positive impact on the environment. Although there were a number of successful initiatives, nevertheless, those initiatives are deemed inadequate. There is evidence of lacking in self-inventiveness in applying the concept of sustainability among local construction contractors. Part and parcel, this shortfall stems from a scarce availability of practical guideline for sustainable methods that can be applied during the construction phase. Thus, research was mooted grounded from the issues identified, and further discusses the environmental strategies in construction sites for Malaysians contractors. Therefore, rooting for qualitative endeavours within the initial stages of the research, in-depth literature analysis and semi-structured interview were conducted respectively. Subsequently, for both undertakings, manual-type of analysis were selected. The former was utilising systematic literature review with multi-layered thematic analysis; meanwhile the latter was embedding a simple themes’ agreement analysis. The outcomes from the first stage of research have outlined five (5) main environmental strategies, namely; (1) protection of the natural environment, (2) waste management, (3) reuse and recycle of resources, (4) general site management, and (5) resource consumption. These strategies were further strengthened based on the subsequent interview conducted towards G6 and G7 contractors. Nevertheless, the research also recorded several important points from the open- type questions, which may influence the suggested strategies. Finally, the research proposed for succeeding quantitative stage (i.e. questionnaire surveys) in order to generalise the previous outcomes to a large population of contractors.
Tourism, Accommodations, Food Services, and Regional GDP
Authors: Sudapet I Nyoman , Durrotun Nasihien Ronny , Wan Ibrahim Mohd Haziman , Ikhsan Setiawan Muhammad , Lin Cathy , Wiwoho Mudjanarko Sri 
Published: June 2020

Abstract
The development of the airport city makes it the center of national-regional economic growth. The continuous development provides several alternative revenues to the surrounding areas and affects the price of the urban houses. The Bank of Indonesia has analyzed the development of commercial property since 2016. It covers five types of commercial property, which include offices (rent/sale), retail (rent/sale), apartments (rent/sale), hotels, industrial land, convention halls, and warehouse complexes, in Jabodetabek, Banten, Bandung, Makassar, Medan, Semarang, Surabaya, Balikpapan, Denpasar, and Palembang. The research aims to find variables that affect the contribution of accommodations and food services to the Regional GDP. Here, researchers use an approach in quantitative dynamics modeling that is often used in time series analysis, which is is the Autoregressive Exogenous modeling structure input (ARX). In general, AR is the Auto-Regressive nature of a model, while X is an exogenous input. The initial population of the study is 296 airports, which consists of all those managed by PT. Angkasa Pura I, PT. Angkasa Pura II, and the UPT Air Transportation in the Region. Then, the population is filtered further to 151 airports in Indonesia. The study shows that the variable of departing aircraft, departing passengers, arriving passengers, baggage unloading, cargo unloading, and cargo loading, each had a contribution to the GDP variable. The departing passenger variable had a positive impact on the increase of the variable of accommodation and food services of the Regional GDP
Photocatalytic Evaluation of Bi-doped TiO/TiO2 under Solar Irradiation
Authors: Chavez D. , García C. R. , Oliva J. , Godina Cubillo M.G. , Torres-Ramírez R.C. , Lopez-Badillo C.M. 
Published: June 2020

Abstract
The photocatalytic properties of TiO2 have been studied in the last decade due to its a high capacity to degrade organic compounds which dangerous for the human health. In order to increase its degradation efficiency, we propose the doping of TiO2 with Bi dopant using concentrations from 0 to 5 at%. A simple and fast (40 min) combustion method was used to synthesize Bi doped TiO2. According to the X-ray diffraction patterns, we obtained a mixture of TiO/TiO2 phases with Bi dopant concentrations below 0.5 at.%. Above this value, the Bi7.68O12.16Ti0.32 compound was obtained. The morphological studies by Scanning electron microscopy demonstrated that a porous material is obtained for Bi concentrations below 0.5% but highly coalesced particles appeared for higher concentrations. The Bi doped materials were used to degrade Methylene blue dye under solar exposure and found a maximum degradation percentage of 96% for the sample doped with 0.1 at% of Bi.
Evaluation of mechanical properties of coconut shell particle/vinyl ester composite based on the untreated and treated conditions
Authors: Livingston T , Athijayamani A , Alavudeen A 
Published: June 2020

Abstract
The aim of the present communication is to study the effects of the addition of the untreated and treated coconut shell particles on the mechanical properties of vinyl ester composites. Composite plates were prepared by hand lay-up technique with the six different content (5, 15, 25, 35, 45, and 55 wt%) of the coconut shell particles. Mechanical properties such as, tensile, flexural, and impact, of the coconut shell particle/vinyl ester composites were determined and compared at both the untreated and treated conditions based on the content of the coconut shell particles. The results revealed that the mechanical properties of the composites have increased with the addition of the coconut shell particles up to 35 wt% and then dropped at both the conditions. The treated composites show the high level of mechanical property values compared to the untreated composites. The optimum particle content to get the best combination of mechanical properties is 35 wt% in this composite. The fractographic studies were carried out to understand the failure of the composites. To understand the chemical compatibility between the particle and the matrix in the composite at both the untreated and treated conditions, the Pukanszky’s model was used and correlated with the experimental results.
Effect of SiC addition on the mechanical properties and wear behavior of Al-SiC nanocomposites produced by accumulative roll bonding
Authors: Hassanein Wael S , Sadoun A M , Abu-Oqail A 
Published: June 2020

Abstract
In this study, we manufactured Al and Al-SiC nanocomposites (SiC vol.% = 1, 2 and 4) using accumulative roll bonding (ARB) at room temperature. Mechanical and wear characteristic of the manufactured samples was studied. The uniform dispersion of SiC particles was achieved after five ARB cycles. The EDX mapping images reveal that the SiC reinforcement particles were homogeneously distributed into the Al matrix. After five ARB cycles, relatively small amount of nano-grains were observed in Al-SiC nanocomposite, indicating the effectiveness of the ARB process of achieving near nanostructure. It was observed that Vickers microhardness improve with increasing accumulative roll bonding cycles. Furthermore after 5 cycles, Vickers microhardness tests results showed that the highest hardness value of 66 HV is attributed to the sample containing 4 vol.% of SiC, much higher than the hardness value of the ARB-processed aluminum of 51 HV. Experimental results indicated that the wear resistance of this nanocomposite improved by increasing the number of ARB cycles due to SiC particles act as a solid lubricant.
A novel solid state reaction route to the preparation of LiCoO2 using micro porous filter paper as scaffolds
Authors: Ahamed Parbhej , Yousuf Mohammad Abu 
Published: June 2020

Abstract
A novel solid state reaction method has been followed to prepare LiCoO2 (LCO) using micro porous filter paper as scaffolds. FT-IR spectroscopy confirms the vibration spectrum for the identification of CoO6 as well as LCO. XRD diffraction analyses confirmed the formation rhombohedral crystal system of the prepared LCO materials with R-3m space group. The sharp XRD diffractogram of filter paper scaffold LCO demonstrate its crystallinity and purity. The presence of high intensity (003) plane, formation of Co–O–Co linkage with (104) plane and splitting of (006)/(012); (108)/(110) planes confirm layered structure of the prepared LCO. FESEM demonstrate that the presence of micropores in the cellulose backbone of filter played significant role for the solid state reaction and can be used as a scaffold to change the morphology of LCO in the microstructural aspect. UV-visible spectroscopy study reveals that the band gap energy of filter papers assisted LCO are less than the LCO prepared directly from raw materials.