bluuebunny/crossref_metadata_2025_split huggingface dataset:
Lightweight design of hub under three working conditions based on Topological optimization
Authors: Zhang TongShuai , Chen XiuSheng , Zhang LiangZheng , Song JiuLing , Sun WenXue 
Published: September 2022

Abstract
SpaceClaim was used to parameterize the main dimensions of 6.50R16 trailer hub model. The sensitivity diagram of hub parameters was obtained based on Central Composite Design (CCD) algorithm, and the stress area of hub was screened out. Using transient mechanical fatigue analysis was carried out on the wheel under the condition of impact load on the S-N fatigue curve obtained hub fatigue failure area, through Admass STEP function wheel movement geometry curve under impact load is determined, according to the result of wheel hub parameter sensitive figure, fatigue analysis and topology wheel movement curve area under impact load, The shape of the hub model was optimized based on topology optimization, and the new hub model was constructed by SpaceClaim geometric post-processing. After topology optimization, the hub quality is reduced to 16%
Improvement of Contact Stress Distribution Between Work Roll and Backup Roll of a Hot Strip Mill
Authors: Dong Qiang , He Yi , Wang Zhongxue , Wen Xiong , Sun Lirong , Li Zhaoyang 
Published: September 2022

Abstract
Contact state between work roll and backup roll has significant influnce on surface fatigue and strip steel shape. In this work, the contact behaviours between work roll and backup roll of a hot strip mill were investigated. The contact stress distributions along the axial and radial direction were calculated. The effect of uneven contact stress distribution on strip steel profile was analysed. The risk of roll fatigue caused by contact stress concentration was pointed out. In order to improve the contact stress distribution, a design method of the backup roll profile was proposed. Both finite element calculation and industrial test have been carried out and showed that the new profile was excellent in reducing the peaks of the contact stress, homogenizing backup roll wear and improving strip profile.
Research on STATCOM control strategy of Cascaded H-bridge considering unbalanced conditions
Authors: Wen Ning , Sun Hui , Zhang Zhi Cheng , Dai Jin Tao 
Published: September 2022

Abstract
STATCOM, a star cascade H bridge, usually uses zero-sequence voltage injection to achieve inter-phase DC voltage balance. Different from negative sequence current injection, the phase-to-phase DC voltage balance control based on zero sequence voltage injection does not generate zero sequence current in three-phase and three-wire systems, which is beneficial to the power quality of the system. In the traditional control algorithm, the zero sequence voltage is calculated by the unbalanced active power and current. The control algorithm contains a large number of complex operations and matrix operations, which need to consume a lot of controller resources and is not conducive to system design and expansion. Moreover, in order to improve the dynamic performance under voltage imbalance, the positive and negative sequence separation is introduced into the feedforward control to increase the complexity of the control algorithm. In order to simplify the control algorithm, a PI regulator is proposed to linearly adjust the DC component of zero sequence voltage in DQ coordinate system. At the same time, through theoretical analysis, it is found that the zero-sequence voltage in feedforward control is equal to the zero-sequence voltage in power grid, so the positive and negative sequence separation can be removed, further simplifying the algorithm.
Modeling and Analysis of Dual Motor Precision Transmission Mechanism
Authors: Zheng Jieji , Tan Ruoyu , Yu Bin , Fan Dapeng , Xie Xin 
Published: September 2022

Abstract
Aiming at the difficulty of fine modeling of dual-motor precision transmission mechanism, the modeling of friction and clearance of the system is studied. Firstly, the structure of the double-motor precision transmission mechanism is introduced, the system is simplified to a three-mass system, and a linear model of the system is established. On this basis, the improved stribeck model is used to describe the friction nonlinearity inside the two-way transmission chain and the large ring gear, and the dead zone model is used to describe the gap nonlinearity between the pinion and the large ring gear, thus forming a complete dual-motor precision transmission mechanism. kinetic model. An experimental device was built, and different excitation signals were used to verify the accuracy of the model. The experimental results show that the Pearson correlation coefficient between the established dynamic model and the actual system is >99% under various excitation signals, which shows the accuracy of the modeling method.
A Fully Geometric Approach for Inverse Kinematics of a Six-Degree-of-Freedom Robot Arm
Authors: Zhang Hongsheng , Xia Qianjin , Sun Jinchao , Zhao Qingjuan 
Published: September 2022

Abstract
This paper presents an analytical solution to inverse kinematics problem of a 6-DOF robot arm based on geometric method. The solution only utilizes relations between vectors in frames attached in the robot arm. Experiments with the solution are conducted to test the approach and results show that the correctness and accuracy of the solution are verified.
Hazardous air pollutants in transmission pipeline natural gas: an analytic assessment
Authors: Nordgaard Curtis L , Jaeger Jessie M , Goldman Jackson S W , Shonkoff Seth B C , Michanowicz Drew R 
Published: September 2022

Abstract
Natural gas production occurs in specific regions of the US, after which it is processed and transported via an interconnected network of high-pressure interstate pipelines. While the presence of hazardous air pollutants (HAPs) in unprocessed, upstream natural gas has been documented, little has been published on their presence in the midstream natural gas supply. We systematically evaluated publicly available, industry-disclosed HAP composition data sourced from Federal Energy Regulatory Commission (FERC) natural gas infrastructure applications submitted between 2017 and 2020. Natural gas composition data from these filings represent approximately 45% of the US onshore natural gas transmission system by pipeline mileage. Given that reporting natural gas HAP composition data is not required by FERC, only 49% of approved expansion projects disclosed natural gas HAP composition data. Of those applications that disclosed composition data, HAP concentrations were typically reported as higher for separator flash gas and condensate tank vapor compared to liquefied natural gas and transmission-grade natural gas, with mean benzene concentrations of 1106, 7050, 77, and 37 ppm respectively. We also identified one pipeline operator that reports real-time HAP concentrations for its natural gas at five pipeline interconnection points. Similar to the FERC applications, this operator reported benzene, toluene, ethylbenzene, xylenes and hydrogen sulfide as present in transmission pipeline natural gas. Notably, mercury was also reported as detectable in 14% of real-time natural gas measurements but was not reported in any FERC applications. Given that transmission infrastructure releases natural gas during uncontrolled leaks and loss of containment events as well as during routine operations (e.g. blowouts and compressor station blowdowns), these gas composition data may serve as a critical component of air quality and health-focused evaluations of natural gas releases.
Groundwater vulnerability assessment in Randublatung groundwater basin using SINTACS-LU model
Authors: Hartono A , Hendrayana H , Akmaluddin  
Published: September 2022

AbstractRandublatung groundwater basin is one of the crucial areas in Central Java that involves agricultural activities, which rely on groundwater sources. Agricultural activities have impacted the declining groundwater excellent of the Randublatung groundwater basin. The groundwater exploration was executed from an unconfined shallow aquifer that is in particular composed of alluvial deposits. Therefore, vulnerability evaluation to delineate regions most vulnerable to contamination from anthropogenic resources has come to be essential for sensible useful resource management and land use planning. This study estimates groundwater vulnerability by applying the SINTACS-LU model, which uses eight parameters to assess groundwater vulnerability and the geographical information system (GIS) in the Randublatung groundwater basin. The final subject level of SINTACS-LU (intrinsic vulnerability index) was created by multiplying the sum of each evaluation parameter by its specific weight. The resultant SINTACS-LU vulnerability map of the study area indicates that the areas most likely to be contaminated are between Kradenan and Keduntuban districts. Elsewhere, Rather high to high SINTACS-LU index values were observed, indicating areas of high vulnerability potential.
Identification of suitable sites for rainwater harvesting using GIS-based multi-criteria approach in Nusa Penida Island, Bali Province, Indonesia
Authors: Setiawan O , Nandini R 
Published: September 2022

Abstract
The critical step in increasing water availability and land productivity in areas with freshwater scarcity, such as arid and semi-arid, is identifying suitable sites for Rain Water Harvesting (RWH). Identifying RWH suitable sites is site-specific due to a wide variety of a region’s characteristics. Biophysical (slope, soil texture, drainage density, land use), hydrological (runoff potential), and socio-economic (distance to road, distance to river, distance to settlement) parameters of the study area were implemented integrating multi-criteria decision analysis (analytical hierarchy processes) and Geographic Information System (GIS) to evaluate RWH suitable sites in Nusa Penida Island, Indonesia. This study’s parameters and hybrid method were effective tools for identifying RWH suitable sites. The result also indicated that approximately 38% of the Nusa Penida Island is highly suited for RWH. These areas are characterized by dryland farming as the dominant land use, gentle slope, high runoff potential, high drainage density, and moderately fine soil texture. The initial identification of RWH potential sites could be valuable information in completing water conservation programs for several purposes. This study’s approach also contributes to developing a suitable RWH identification methodology, especially for dry regions in Indonesia.
Managing fertilizers and water treatments on rice production and N2O emission
Authors: Lina S H , Hesti Y , Ali P 
Published: September 2022

Abstract
Addressing issues about climate change and higher food demand requires improve management practices. Fertilizer and water input are the critical resources to ensure high yield and low impact to environment in paddy field. The aim of this study was to determine whether higher grain yield and lower nitrous oxide (N2O) emission can be achieved by managing fertilizer and water input. A field experiment was conducted during rice paddy season under conventional practice (CP) that comprised of farmer practice and continuous flooded. In contrast to CP, balanced fertilizer application and intermittent irrigation was applied for another treatment that namely technology introduction (TI). Results showed that the average of seasonal N2O in the TI treatment decreased by 54% compared with the CP treatment. Aerobic–anaerobic increased in N2O emissions. Lower N2O emission at higher rate of N fertilization. Those findings indicated that enhancing rice production and mitigating GHG emission under application of balanced fertilizer and proper water management from paddy field can contribute to sustainable agriculture.
Understanding the Connection between Urbanization and Hydrometeorological Disasters: an Experience from Central Java Province, Indonesia
Authors: Dewi R S , Handayani W , Rudiarto I , Artiningsih  
Published: September 2022

Abstract
Climate change is one of the development challenges, both at the global, national, and regional levels. In recent years, the impact of climate change is increasingly affect the world community. Various studies state that the factor that exacerbates climate change comes from massive human activities, causing the production of the increasing of greenhouse gases. The growth in population and rapid urbanization causes urban expansion. Land conversion is unavoidable, escalates pressure on the environment, causing hydrometeorological disasters such as floods to occur more frequently. Some of them even claimed many lives and caused material losses. This study aims to investigate the connection between urbanization and hydrometeorological disasters in Central Java Province, as an effort to understand the characteristics of the region in supporting adaptation to climate change. The method used is overlay analysis through GIS by using data on the rural urban status, building density, and disaster events in Central Java Province in 2020. Based on the results of the analysis, it is known that the existence of massive urbanization correlates to the occurrence of disasters, depicted by several spots in Central Java Province.
The study of greenhouse gas emissions in village level to support the “PROKLIM” program: case Study of Poncosari Village, Yogyakarta - Indonesia
Authors: Sekaranom Andung Bayu , Kusumandari Ambar , Suratman  
Published: September 2022

Abstract
In Indonesia, PROKLIM is one of the major adaptation and mitigation actions that conducted at the local (community) level. The activities that need to be accelerated and capacity building and mainstreamed in various development activities and existing community activities to support the green house gases (GHG) reduction at national level. The general purpose of this activity is to strengthen the program in increasing understanding about climate change and its various impacts and encourage implementation of real actions in the community. To support this goal, an inventory of greenhouse gas emissions was carried out at the village level, one of which was Poncosari Village located in Bantul Regency, Special Region of Yogyakarta, Indonesia. The GHG emissions inventory is carried out for the domestic, transportation, and livestock sectors. The inventory is carried out by surveying each hamlet in the village. The results of the analysis show high emissions from the livestock sector. The contribution of the domestic sector occupies the second position due to the use of firewood.
Community’s reliance on protected forest resources for livelihood: a case of villages in surrounding Sermo Wildlife Sanctuary
Authors: Fadiyah Salsabila Syifa , Marhaento Hero 
Published: September 2022

Abstract
Sermo Wildlife Sanctuary (SWS) is a well-known protected area in Kulon Progo district, Indonesia that has unique plants, animals, and ecosystems. Different from common protected areas which usually have native plants, this area is mostly occupied by commercial trees such as teak (Tectona grandis) and Mahagony (Swietenia mahagony) since historically this area was a production forest. Although it was mostly covered by homogeneous forest, the area has rich biodiversity since it has become the habitat of various native animals such as brontok eagle (Spizaetus cirrhatus) and barking deer (Muntiacus muntjac). Therefore, in 2014 this area is officially appointed as a wildlife sanctuary with a total area of about 188.99 Ha. However, the change of forest status from production forest into the protected area has not been easily adopted by the local communities since they keep utilize forest resources inside the forest area. This research aims to assess the community’s reliance on the SWS resources for livelihood. We interviewed 174 respondents that were selected by the proportional purposive sampling technique to each hamlet in the two villages located near SWS namely Karangsari and Hargowilis villages. The result showed that only 11% of the total respondents have relied on forest resources in SWS with total of 16 respondents (9.2%) were at a low level of reliance and 4 respondents (2.3%) at a medium level of reliance. The main factors that influence the community’s reliance on forest resources in SWS consist of education level, activity frequency, and ages.
Seabed Classification Using Multibeam Echosounder Measurement Data
Authors: Nitriansyah R , Cahyono B K 
Published: September 2022

Abstract
Multibeam Echosounder (MBES) utilizes acoustic waves emitted to the seafloor through a transmitter or transducer and records its reflective. The information obtained by MBES are depth data and the scattering value of the acoustic signal reflected by the object or the seabed, called backscatter. Acoustic backscatter can be used to classify objects or the seabed such as shipwrecks or seabed sediments. This study focuses on seabed classification using an acoustic backscatter obtained from the measurement at Alur Pelayaran Barat Surabaya (APBS). The data used in this research are acoustic backscatter from bathymetry data extraction and ground truth data of sediments. This study found the fine sand sediments with backscatter value −15.56 dB, and clayey silt sediments with backscatter value −24.36 dB. The correlations between backscatter and seabed sediments in study area were classified into four classes, clay class sediments with backscatter intensity range [(−33.81) – (−28)] dB, clayey silt class sediments with backscatter intensity range [(−27.99) – (−23)] dB, sandy silt backscatter intensity range [(−22.9) – (−18)] dB, and sand class sediments with backscatter intensity range [(−17.99) – (−10)] dB. Based on the results data are known in the study area of seabed conditions dominated by sediments type sandy silt.
Delineation of Mrutu Spring Protection Zone: An Attempt to Maintain the Sustainability of Groundwater Resources
Authors: Amirrul H G , Hendrayana H , Putra D P E 
Published: September 2022

Abstract
Lumajang Regency government plans to optimize water resources using Mrutu Spring groundwater as a water source for the Drinking Water Supply System (SPAM). The maintenance of the groundwater quality and quantity sustainability is necessary to delineate the protection zone of Mrutu Spring. Geological, hydrogeological, and land use parameters assessed the spring protection zone. The Mrutu Spring protection zone determination was conducted using manual and analytical solutions and combination hydrogeological methods. This study finds that the protection zone of Mrutu Spring is around Mrutu Spring up to Mrutu Spring groundwater recharge in the northwest. Mrutu Spring protection zone is divided into protection zone I, II, III, and groundwater recharge for the spring protection zone. The geometry of protection zone I is a circle with a radius of 1.64 km and 314 m2. Protection zone II is in the fifth circle with a 1.64 km and 2.87 km2. Protection zone II has an ellipsoidal shape with a radius of 16.74 km and 67.28 km2. The groundwater recharge for the spring protection zone is oval, with a radius of ± 12 km and 57,85 km2.
Modification of Temperature Vegetation Dryness Index (TVDI) Method for Detecting Drought with Multi-Scale Image
Authors: Nugraha A S A , Gunawan T , Kamal M 
Published: September 2022

Abstract
The objective of this research is to assess the accuracy of Temperature Vegetation Dryness Index (TVDI) methods applied to Principal Component Analysis (PCA) and multi-scale images. The TVDI method will revamp with PCA in vegetation and surface temperature variables. Each variable has three algorithms, which are VCI, NDWI, and SAVI, for vegetation, and TCI, CWSI, and LST for surface temperature. The band input used was the PC1 resulted from PCA in each variable. The regression relationship between vegetation and surface temperature with PCA shows an average value of 0.99. The results of the PCA increased drought area throughout the research area and showed a negative relationship on the TVDI concept. Validation uses TRMM data for MODIS images and field surveys for Landsat imagery. Landsat showed an accuracy value of 75% and influenced by climate change. Besides, multi-scale imaging proves very useful in monitoring and mapping droughts.
Application Of Remote Sensing Technology And GIS For Extraction Of Groundwater Potential Zone Parameters In Gesing Watershed, Purworejo
Authors: Sudaryatno  , Rahardjo Noorhadi , Winanda  
Published: September 2022

Abstract
The increase in the number of residents and the long dry season is the cause of the increasing need for clean water in several areas in the Purworejo regency, one of which is the Gesing river basin area. Therefore, information is needed related to the potential of groundwater in the Gesing watershed, Purworejo district. This study has three objectives, namely: assessing the ability of remote sensing imagery (Sentinel 2A and TerraSAR-X) in extracting land parameters that affect groundwater potential, mapping groundwater potential zones using remote sensing data with geographic information systems in the Gesing watershed, and evaluating the results mapping groundwater potential zones to determine the most influential parameters on groundwater availability in the Gesing sub-watershed Purworejo district. The accuracy of the interpretation results is done by using the confusion matrix method. Spatial modeling uses a quantitative approach weighted with weighted parameters. The weight of each physic parameter is obtained from the Analytical Hierarchy Process (AHP) method. The results showed the accuracy of interpretation of lithology and land use respectively by 93% and 87%. The results of the mapping show that there are 4 classifications of groundwater potential in the Gesing sub-watershed, namely less, medium, good, and very good has and accuracy of 87%. The parameter which greatly influences groundwater potential in the Gesing sub-watershed with a weight value of 0.49 is the aquifer characteristic. While the parameter that has the least effect is drainage density which has a weight value of 0.05.
Study of geotourism development in Batumilmil Karst, Langkat, Sumatera Utara
Authors: Haryono E , Reinhart H , Rabbani D I , Putra R D , Sukarno B , Sasongko M H D , Afid N , Hakim L , Ristiawan A W , Susanto A D , Fauzan M , Saputra A 
Published: September 2022

Abstract
Karst of Batumilmil comprises many unique geomorphological features such as caves, rivers, and mountainous ranges. Situated at the outskirt of the Biosphere Reserves of Leuser National Park, this area is wide open for geotourism development. This paper aims to study the potencies from Karst of Batumilmil to be developed into geotourism. Using data obtained from field surveys and visualized by Geographic Information System, we can find and design the recreational resources and formulate the development strategies toward them. Our study finds six caves as the main geotourism sites for activities like cave exploration and combined with the jungle tracking and river tubing as the secondary or supporting tourism attraction. Each cave has its characteristics that determine the geotourism activities and the carrying capacity. We also discover that each cave provides high scientific values, showing how the geological process of uplifting to form three cave levels. We conclude that Karst of Batumilmil has huge potential to be developed as geotourism destination with the strategy for this development consists of satisfying sustainability, serving educational purposes, and also balancing environmental, physical, and mental health.