bluuebunny/crossref_metadata_2025_split huggingface dataset:
Analysis on the Relation between Strengthening Internal Management and Economic Benefit of China’s Petrochemical Enterprises under the Restriction of Market Environment
Authors: Zhu Xueyi , Zhu Liangfeng 
Published: September 2020

Abstract
This paper studies the external impact of China’s energy policy and market environment changes on the economic benefits of petrochemical enterprises, and the internal impact of internal control and management of petrochemical enterprises on their economic benefits. In 2010-2017, China’s energy economic policy has been adjusted, the market environment has undergone major changes. This paper quantifies these two factors into indexes and combines them with the internal control index of enterprises to apply them to the economic benefit model of petrochemical enterprises, Regression analysis has been used for positive analysis. The study finds the changes of China’s energy policy have played a guiding, regulating and promoting role in the development of petrochemical enterprises; the more restrictions the market environment imposes on petrochemical enterprises, the worse the economic benefits of petrochemical enterprises are. Strengthening internal control in petrochemical enterprises can offset some unfavorable factors and the economic benefits of downstream petrochemical enterprises are better than those of upstream ones. The paper reveals the effects of energy policy action index, market environment restriction index and internal control index on economic benefits of petrochemical enterprises. The policy recommendations are as follows:The governments should improve the market environment and formulate policiesthat will benefit upstream petrochemical enterprises, especially oil and gas extraction enterprises, in raising product prices and increasing profit margins.
Approach Airspace Utilization Rate Mode of Terminal Area in Blocky Distributed Hazardous Weather
Authors: Gao Zheng , Zhang Zhaoning , Xu Zihang 
Published: September 2020

Abstract
Hazardous weather has a great impact on the airspace operation of the terminal area, which will lead to a reduction in the utilization of the airspace of the arrival operation. Therefore, it is necessary to evaluate the airspace utilization of the terminal area in hazardous weather. This paper analyzed the impact of blocky hazardous weather area on flight path, flight distance and flight time, and established a calculation model for the terminal area arrival airspace utilization rate in the blocky hazardous weather area based on the flow volume ratio based on the time and space constraints of the terminal area airspace operation. We selected a control terminal which was affected by the blocky hazardous weather area, then used the model to calculate the approach airspace utilization rate and compared it with the approach airspace utilization rate under normal weather conditions. The results show that the evaluation results of the established model can reflect the actual operating conditions.
Hysteresis Loops in Diluted Antiferromagnetic Films
Authors: Mao Zhongquan , Zhan Xiaozhi , Zhang Jiang , Chen Xi 
Published: September 2020

Abstract
The hysteresis loops of diluted antiferromagnetic (DAF) thin films are studied by means of Monte Carlo simulations. The major hysteresis loops exhibit rich variety of shapes. A diagram of shape is demonstrated. Loop shift and coercivity enhancement are observed exclusively in field-cooling minor loops, which indicates that the effects are not the intrinsic properties of the DAF thin films. The numerical results may help to understand the stable mechanism of the uncompensated spins in the DAF layer and exchange bias systems.
Study on Establishing of Multilevel and Integrated System of Vocational Education
Authors: Gao Guangling , Niu Lin , Tan Wei , Zhang Peiyun , Pan Xianghua , Jin Shichen , Luo Qiang 
Published: September 2020

Abstract
The establishing of the vocational education system in the era of knowledge economy is an important topic that must be studied and solved in current vocational education. This paper studies and explores multilevel and integrated system of vocational education. This paper puts forward the essential meaning of ‘customization, on-site, internationalization and digitization’ of vocational education, and constructs a multilevel and Integrated vocational education system and training mode, which could train different levels of technical skill talents to meet the lifelong learning.
Synthesis of Fe3O4/Graphene oxide/Pristine graphene Composite and Its Application in Electrochemical Sensor
Authors: Cai Linlin , Shang Yangyang , Jiang Xiaoqing 
Published: September 2020

Abstract
In this work, a Fe3O4/graphene oxide (GO)/pristine graphene (PG) ternary composite was synthesized successfully by a two-step method: first graphite was added into GO dispersion to get the GO/PG composite, followed by loading Fe3O4 nanoparticles via a co-precipitation method. The structure of Fe3O4/GO/PG was characterized by scanning electron microscopy (SEM) and X-ray photoelectron spectroscopy (XPS). Compared with the Fe3O4/GO binary composite, Fe3O4/GO/PG composite shows more excellent properties. An electrochemical sensor fabricated with Fe3O4/GO/PG was used to detect dopamine (DA). The linear detection ranges of DA is 5-50 μM with detection limits of 3.37 μM.
Flow Model Considering the Influence of Low Velocity Non-Darcy Flow and Reservoir Connectivity and its Application
Authors: Li Meifang , Miao Zhiguo , Zheng Xianbao , Li Min , Jia Shihua , Wang Hongwei , Wang Jiankai 
Published: September 2020

Abstract
During the development of low and ultra-low permeability sandstone reservoir, due to the starting pressure gradient of poor reservoir physical properties, it is difficult to establish effective displacement between oil and water wells, and high voidage replacement ratio and low formation pressure are common phenomena. So it is necessary to analyze the influential factor of high voidage replacement ratio of low and ultra-low permeability reservoir. A one source and one sink flow model considering low velocity non-Darcy flow and unconnected reservoirs was established by using the flow theory of unidirectional flow and radial flow, and the model was solved by numerical method. The results show that the unconnected layers of water well will lead to the increase of invalid water injection; the larger the starting pressure gradient is and the larger the volume proportion of unconnected layer is, the smaller the maximum annual liquid production rate is and the higher the cumulative voidage replacement ratio corresponding to maintaining the maximum liquid production rate is. It is theoretically proved that the existence of unconnected layers and starting pressure gradient are the factors leading to the existence of high voidage replacement ratio in low and ultra-low permeability reservoirs. The study provides a theoretical basis for the adjustment of high-efficiency water injection in reservoirs.
Flightcrew Light Alerting Design with Dark Cockpit Philosophy
Authors: Zhang Chen , Li Lei , Xu Shining , Jiang Wentian 
Published: September 2020

Abstract
An effective and reasonable flightcrew light alerting design in civil aircraft flight deck based on dark cockpit philosophy has been proposed. Considering the human factor engineering and airworthiness requirement, the paper analyses flight deck alerting system and defect of bright cockpit philosophy, then the state-of-art light alerting design using dark cockpit philosophy is given. According to operation scenarios and architectures of different aircraft systems, three type of the new design is presented. This approach consists of general light alerting part, standby system light alerting part and special light alerting part. The proposed design ensures that the flight crew not only obtain the aircraft system status intuitively, but also decrease their workload during the whole flight phase.
The Classification and Measurement of Body Size in Jiangxi for the Application of Clothing Industry
Authors: Zhang Huaxia 
Published: September 2020

Abstract
3D body scanner and Martin ruler were applied in this study. Total sampling number is 2000 Ranging from 1 to 75 years old based on the population distribution including north, middle and south area in Jiangxi. Specially, 562 women ranging from 13 to 22 years old were sampled for detailed analysis. 66 items were measured through 20 basic marked points. Descriptive statistic including concentrated trend and dispersive tend were calculated by using SPSS software for various area gender and age. The main body size parameters were obtained by PFA method and further analyzed by descriptive statistic method. The various foreign classification methods were referred and 6 kinds of the latest body size classification standards were built according to height, hipline, hip-bust-gap, bust-waist-gap and hip-waist-gap. An extended estimated sampling number 25, 972 was found based on variation of measured items for overall study to build a Jiangxis body size database.
Soft Clay Improvement Using Bamboo Leaf Ash on CBR Values
Authors: Wijaya W , Ismanti S , Rifa’i A 
Published: September 2020

Abstract
Soft and expansive clay is a soil type mostly found in Indonesia. Cement addition is one of the treatments common applied in soft clay improvement. However, its utilization requires to be controlled considering the effect to environment. Bamboo is a very abundant natural resource. On the other hand, bamboo leaf still requires attention in terms of management and utilization. In the form of ash, bamboo leaf contains high silica that could be used as pozzolan material. This research investigated the effect BLAsh addition in reducing cement utilization to the CBR value parameter of soft clay soil by experimental analysis. The total content of stabilizer material in the soft clay soil is 12% of the dry soil mass. Then, BLAsh content was varied in 0%, 25%, 50%, 75%, and 100% of the total content of stabilizer material. The result depicted that 25% of cement substitution by BLAsh proved the improvement of CBR value both in dry and critical condition. In addition, improvement of expansive soil was proven by the decreasing of swelling percentage in the mixture with 25% of BLAsh content. Also, the longer curing time is important in providing perfect reaction of the chemical contents in the mixture.
The Flexural Capacity Study of High Strength Reinforced Concrete Beams Used Palm Oil Clinkers as Additives
Authors: Yusra A , Triwulan  , Opirina L , Ikhsan M , Safriani M 
Published: September 2020

Abstract
The palm oil clinkers has a high silica content to use in high strength concrete mixtures as additives. In the study to replace silica fume used fly ash which is made from the palm clinkres and mashing then filtered with a No. #200 sieve. The study used a tested beam with 15 × 30 × 220 cm sized with concrete strength design (f’c) 60 MPa and (w/c) is 0.25. The main reinforced used 15.8 mm diameter with yield strength (fy) 446.34 MPa and shear reinforced used 11.9 mm diameter with yield strength (fy) 381.72 MPa. The compressive strength test at 28 days of 3 pieces of control specimens showed average value of 58.77 MPa. The maximum deflection in the middle of reinforced concrete beams is 31,8 mm at the maximum load 260.00 kN. The maximum deflection that happened is bigger than theoretical deflection with with two load points 17,126 mm. While the ductility produced by high quality reinforced concrete blocks with additives of palm oil clinkers is 2.313. Strain that occurs in tensile reinforcement and shear reinforcement under maximum loading conditions is 569,911 μm and 8,967 μm. The palm oil clinkers as a substitute for silica fume in high quality reinforced concrete is effectively used to increase concrete ductility.
Free Feeder/Bus Ticketing Systems Modelling for Students in Surakarta City Based on Android Platform
Authors: Setiono  , Yulianto B , Alfarisi S , Nurfaalih N T 
Published: September 2020

Abstract
High population growth causes an increase in community mobility to meet their travel needs. This has an impact on the use of private vehicles that are not controlled, which is causing transportation problems. The solution to the transportation problem is to use public transportation as a mode of travel. The government is obliged to provide adequate public transportation so that people switch from using private vehicles to using public transport vehicles. In order to meet the needs of public transportation, therefore, the Surakarta City Government provides a free BST bus/feeder fleet specifically for student. In connection with this, a ticketing BST bus/feeder system is needed to monitor and supervise public transportation users. The aim of study is to develop a free ticket system for student to use public transportation in the form of BST bus/feeder using Android smartphone technology. By using this system, students are expected to depart and return from school using public transportation provided by the city government for free without the need to be escorted and picked up by parents or guardians. Study results is an android application called Ride for Free, which is user friendly and helps students to their daily riding activities to school.
The Study Degree of Saturation on Toll Road Access Based on Changes in Urban Settlement Land
Authors: Akbardin J , Permana A Y , Nurahman H 
Published: September 2020

AbstractChanges in land use that are not in harmony with the growth in the number of vehicles cause congestion and decrease in the speed of travel. Toll road access is one of the important ways to decrease traffic jams in cities that require smooth traffic flow. The purpose of this study is to analyze the level of service level of toll road access to land use changes from residential environments to commercial areas. The analytical method was used to use multiple regression analysis to estimate traffic generation from changes in commercial land use. The degree of saturation of road toll access before land use change shows DS values of 0.56 to 0.65 which were analyzed at peak morning hours. This was an indication of the smooth flow of traffic. After there was a change in land use shown from the trip generation from the commercial area with the equation Y = 2.554 + 1.143 X3 + 1.041 X4 + 1.011 X5 +1.256 X6 + 1.2045 X7 with the significance of the model R2 = 0.91. So that due to changes in land use, the toll access point was higher with changes in the degree of saturation 0.6 to 1.2.
BPPT-lock Armor Unit Implementation for Improving Breakwater Sustainability at the Pacitan Power Plant
Authors: Jauzi M Z , Istiyanto D C , Subarkah A , Suranto  
Published: September 2020

Abstract
BPPT-lock was developed by the Agency for The Assessment and Application of Technology (BPPT) and was awarded patent in 2012. The hydraulic stability (KD) of BPPT-lock armor unit was compared to Tetrapod, Dolos and Xbloc armor units. The results indicate that, BPPT-lock performs far better KD in comparison to each of these armor units. A comparative analysis on the economical use of material was also carried out among BPPT-lock, Dolos, Tetrapod and rough stone and rounded stones for similar design condition, the armor unit weight is 4.68ton, 4.97ton, 9.95ton, 19.89ton, and 39.79ton respectively, means that BPPT-lock is more efficient in this comparison. Considering its feasible performance, BPPT-lock is designed as the armor units for the maintenance and reparation of the existing rubble mound breakwater of Pacitan Coal Fired Power Plant port. The 110 m parts of the existing breakwater was hardly damaged and the new structure is designed to stand against a 30 yrs RP waves of Hs = 7m. BPPT-lock armor unit of W = 11 ton on the breakwater slope 1:1,5 is implemented. The first phase construction works was completed in December 2018 and visual observation has shown the great integrity and stability of BPPT-lock armor units.
Design of a Spun Pile Vertical Wall Breakwater for the Improvement of Damaged Cellular-Cofferdam
Authors: Subarkah A , Folmen D , Latief S A , Istiyanto D C , Putera M A , Suranto  , Sujoko S U , Hendriyono W , Aziis S A , Hamid A , Saputra A D , Widagdo A B , Kongko W 
Published: September 2020

Abstract
A new breakwater is on demand to replace the function of an existing steel sheet pile cellular-cofferdam at TPPI Tuban Port of East Java. The existing breakwater has been partially damaged due to severe corrosion and hard attack by monsoon waves. An open frame structure of spun pile vertical-wall breakwater is proposed as an alternative design. The spun pile is a pre-stressed concrete hollow cylinder pile with outer diameter 1800mm and thickness of 200mm. The spun pile lengths vary between minimum 28m to maximum 33m according to the position of hard soil against seabed. The new breakwater is designed to stand against 100yrs RP wave with Hs = 4.7m. Wave height variations around the structure are simulated using Boussinesq Wave module of MIKE21 software, while SAP2000 is used to calculate the strength of superstructure to withstand existing loads and certain load combinations. Plaxis software is used mainly to analyze substructure using existing soil data. This article describes the design process of spun pile vertical wall breakwater, started from loads calculation, then define load combinations, analyze structure in SAP2000, analyze structure in Plaxis, determination of specification and dimension, to design drawings creation.
Implementation Photography as a Media and Supports in Construction Era 4.0 at the Civil Engineering for the Construction Design to Face Tidal Floods Due to Global Warming
Authors: Hermawan S , Leman S 
Published: September 2020

Abstract
Global warming causes climate change with extreme intensity, and other impacts are rising sea levels along with increasing global temperature variability. The research problem located at a remote area in Sidoarjo Regency, East Java Province Indonesia. On December 06, 2017, dozens of houses flooded as high as 60 to 70 cm, resulting in losses of 5 billion rupiahs. Then, it needs to conduct research and design for answering this challenge, but the measurement data was expensive. Thus, the goal of this study, as well as a challenge as Indonesian Engineers, is responsible for taking action through the professionalism of engineers with science and technology by implementing the photography technically. In construction 4.0 era, the new method of aerial photography had introduced. The methodology in this study carried out by making nearshore bathymetry maps with drones along with taking pictures, then it processed and analysed with MenciAPS software and ArcGIS, which was cheaper and safe than using an aeroplane. The outcomes show that the situation nearshore bathymetry map can support measurement data. It can help improve the quality of an engineer, because of the self-development has been done. Thus, the results obtained can be used as a reference for inter-community planning.
Improving uncertainty in forest carbon accounting for REDD+ mitigation efforts
Authors: Yanai R D , Wayson C , Lee D , Espejo A B , Campbell J L , Green M B , Zukswert J M , Yoffe S B , Aukema J E , Lister A J , Kirchner J W , Gamarra J G P 
Published: September 2020

Abstract
Reductions in atmospheric concentrations of greenhouse gases are urgently needed to avoid the most catastrophic consequences of warming. Reducing deforestation and forest degradation presents a climate change mitigation opportunity critical to meeting Paris Agreement goals. One strategy for decreasing carbon emissions from forests is to provide developing countries with results-based financial incentives for reducing deforestation: nearly two billion dollars are currently committed to finance such programs, referred to as REDD+ (Reducing Emissions from Deforestation and forest Degradation, conservation, sustainable management of forests, and enhancement of forest carbon stocks). Countries participating in these programs must document the uncertainty in their estimates of emissions and emission reductions, and payments are reduced if uncertainties are high. Our examination of documentation submitted to date to the United Nations Framework Convention on Climate Change (UNFCCC) and the Forest Carbon Partnership Facility (FCPF) reveals that uncertainties are commonly underestimated, both by omitting important sources of uncertainty and by incorrectly combining uncertainties. Here, we offer recommendations for addressing common problems in estimating uncertainty in emissions and emission reductions. Better uncertainty estimates will enable countries to improve forest carbon accounting, contribute to better informed forest management, and support efforts to track global greenhouse gas emissions. It will also strengthen confidence in markets for climate mitigation efforts. Demand by companies for nature-based carbon credits is growing and if such credits are used for offsets, in exchange for fossil fuel emissions, it is essential that they represent accurately quantified emissions reductions.
Symmetries of Schrödinger equation with scalar and vector potentials
Authors: Nikitin A G 
Published: September 2020

Abstract
Using the algebraic approach Lie symmetries of time dependent Schrödinger equations for charged particles interacting with superpositions of scalar and vector potentials are classified. Namely, all the inequivalent equations admitting symmetry transformations with respect to continuous groups of transformations are presented. This classification is completed and includes the specification of symmetries and admissible equivalence relations for such equations. In particular, a simple mapping between the free Schrödinger equation and the repulsive oscillator is found which has a clear group-theoretical sense.
Mangrove Root Diversity and Structure (cone, pencil, prop) Effectiveness in Accumulating Cu and Zn in Sediments and Water in River Blanakan
Authors: Takarina ND 
Published: September 2020

Abstract
The effectiveness of metal accumulation in mangrove species is related to the root structure and diversity. This study aims to investigate the type of roots belong to Avicennia marina, Rhizophora mucronata, and Sonneratia caseolaris in accumulating Cu and Zn from sediment and water. The samples consist of roots, water and sediment collected from 9 stations in River Blanakan. The heavy metals in samples were analyzed by using AAS. The Zn in A. marina, R. mucronata and S. caseolaris roots were 18.08-54.64 mg/kg, 9.75-54.75 mg/kg, and 19.58-33.33 mg/kg. While, the Cu in A. marina, R. mucronata and S. caseolaris roots were 0.33-0.89 mg/kg, 0.2-54.75 mg/kg and 0.4-0.99 mg/kg. The effectiveness of mangrove roots in accumulating metals is measured by Transfer Factor (TF). The results of this study showed that R. mucronata has the highest TF. The TF of sediment-to-root for Zn in mangrove species is R. mucronata>S. caseolaris>A. marina. While, the TF of sediment-to-root for Cu is R. mucronata>S. caseolaris=A. marina. The TF ranges of R. mucronata for Zn are 0.30-0.38 and for Cu is 0.36-0.46. Hence, the R. mucronata with its unique prop root has significant potential in accumulating metals Cu and Zn from sediment.