bluuebunny/crossref_metadata_2025_split huggingface dataset:
Fanaticism Category Generation Using Tree-Based Machine Learning Method
Authors: Aribowo A S , Basiron H , Herman N S , Khomsah S 
Published: May 2020

Abstract
This research has produced categorization of political fanaticism on social media. The results of this study divide political fanaticism into 4 categories: positive, neutral, negative and very negative. The background of the research is that currently social media cannot recognize the elements of fanaticism and does not care about the spread of negative fanaticism. One of the best solutions to prevent the spread of negative fanaticism on social media is to develop a computer system which is able to recognize, categorize fanaticism and reject the entry of negative fanaticism. This research extracts features of sentiment, emotions, and expressions of hatred in opinions on social media. The results of the feature extraction are then processed into knowledge using tree-based machine learning methods, namely Random Forest and ID3. The validation result shows that the knowledge generated by the Random Forest process outperforms other techniques with an accuracy of 91.82%. Knowledge from the Random Forest can be used to categorize fanatical texts based on sentiment, emotion and hatred in further research
Enhancing the reinforcing efficiency of silica on styrenebutadiene rubber through the use of palmitamide
Authors: Surya I , Ginting M 
Published: May 2020

Abstract
In this paper, enhancing the reinforcing efficiency of silica on styrene-butadiene rubber (SBR) compounds through the use of palmitamide was carried-out. The palmitamide was laboratory prepared from palmitic acid and urea and loaded into the silica-filled SBR compounds at 1, 3, 5 and 7 phr. It was found that palmitamide exhibited modulus and tensile strength enhancements; the tensile modulus at 100% and tensile strength were enhanced, especially up to a three phr of palmitamide concentration. It was revealed that the modulus and tensile enhancements were attributed to the enhancing of reinforcing efficiency of silica on the SBR through the use of palmitamide as a curative and plasticizing rubber chemical which increased the degree of silica dispersion, interactions SBR to silica as well as cure state. From scanning electron microscopy (SEM) or morphology test, it was proved that the SEM image of silica-filled vulcanizates with 3 phr of palmitamide exhibited the greatest matrix tearing lines that indicated the greatest degree of filler dispersion and interactions between SBR to silica.
Performance of mini air cooler on parked car under direct sunlight
Authors: Setiyo M , Waluyo B , Widodo N , Rochman M L , Raharja I B 
Published: May 2020

Abstract
Solar radiation causes excessive temperatures in the cabin of a car parked in direct sunlight. Excess temperatures can accelerate damage to interior compartments, increase the evaporation of benzene from interior components, and increase the AC load when the vehicle starts. Therefore, this article presents the results of an investigation on the energy conversion of solar cells mounted on the car roof to activate electric blowers (mini air cooler). Two Nissan Grand Livina with and without mini air cooler is placed in areas exposed under direct sunlight. Then, the temperature data is sent and processed with DAQ master. The results showed the mini air cooler was able to reduce the cabin temperature to 6°C.
Residual velocity and kinetic energy of the ballistic simulations test on hardened medium carbon steel plate
Authors: Purwanto H , Dzulfikar M , Tauviqirrahman M , Syafaat I , Arifin M 
Published: May 2020

Abstract
Ballistics testing is the study of collision phenomena between projectiles and target material. Simulation with finite element is one alternative to ballistic testing that can provide detailed numerical data and specific. Validated simulations can be used as a reference for improving projectile resistant material in addition to the results of experiments test. These papers presents the effect of austenization temperature and quench media in the S45C steel plate on the residual velocity of the projectile and kinetic energy after being fired blunt projectile at a speed of 303.5 m/s with simulation base on finite element. Material data was obtained from the results of an experimental test of S45C steel plate thickness 8 mm which was austenization at 700, 800, 900°C which was quenched in water and oil media. Validation of simulations is carried out with past research. The simulation results show that the steel plate is austenization 900°C with treatment on the quench oil media can withstand the projectile better, with a projectile residual velocity of 234.46 m/s, with projectile kinetic energy of 1346.8 Joule.
Design and simulation of mixer insulators to improve turbulence in intake manifold
Authors: Sunaryo  , Irfan A , Setiyo M , Amin N 
Published: May 2020

Abstract
This article presents an analysis of mixer insulators on the gasoline engine to find the most optimal design. A standard insulator has been redesigned by adding a scrambler of air flow placed in the intake manifold. Simulations are carried out on 10 variations, which include standard insulators, 5, 7, and 9 angled insulators which have slopes of 30°, 45° and 60°, and have a thickness of 5 mm. Each model was analysed using Computing Fluid Dynamic (CFD), with parameters of air velocity 10 m/sec and air pressure 101325 Pa. Simulation results show that mixer insulators with a thickness of 5 mm, 5 blades with a 45° slope angle produce the best turbulence intensity. Meanwhile, another design with a thickness of 5 mm, 9 blades with an angle of 60° slope angle produce the best effect to increase air velocity.
Inertia and slip effect on a single textured hydrodynamic thrust bearing using CFD methods
Authors: Muchammad M , Triandani O , Tauviqirrahman M , Hilmy F , Jamari J 
Published: May 2020

Abstract
Increasing bearing performance in load support can be done by adding texture and artificial slip on one of the bearing surfaces. In this paper, a study is presented on fluid inertia and slip effect on the performance of textured hydrodynamic thrust bearings in load support by considering both cavitation and without cavitation. The results obtained indicate that cavitation needs to be considered in the bearing analysis. Moreover, the greater the fluid inertia force is, the less load support will be produced in a slip condition, but in a no-slip condition, adding artificial slip can increase the load support in thrust bearings at a certain sliding speed.
Fuel control system modeling for LPG fueled engine using Adaptive Neuro-Fuzzy Inference Systems (ANFIS)
Authors: Munahar S , Setiyo M , Purnomo B C , Rifangi Y 
Published: May 2020

Abstract
LPG is an alternative fuel for gasoline engines that have almost all basic properties, such as energy content, octane number, automatic ignition temperature, flame speed, and flammability limits. The CO, CO2, HC, and NOx emissions produced by LPG engines are lower than current gasoline engines. However, LPG vehicles with first generation LPG kits (vaporizer and mixer) generally waste fuel during deceleration. Therefore, this study develops fuel control during deceleration with Adaptive Neuro-Fuzzy Inference Systems (ANFIS). Simulation results show that the controller is able to provide a more realistic picture of the dynamics of AFR during deceleration. In conclusion, ANFIS is very promising to be implemented as an AFR controller in LPG-fueled vehicles.
Improvement of methane composition utilizing activated carbon adsorption column for biogas purification from food waste
Authors: Lestari S , Sriana T , Raharjo M S , Sudiarte I N , Anugrah M N 
Published: May 2020

AbstractOne of the potential candidates to produce biogas is food waste. The main composition in biogas are methane which has calorific value and carbon dioxide which has no calorific value. To increase calorific value of biogas, a purification process needed by removing carbon dioxide content. In this study, coconut shell charcoal is applied as activated carbon. The different flow rates of biogas entered into adsorption column are investigated. It was found that the optimum flow rate is 2 l/min to increase methane from 90.20 to 98.14%.
Design of sustainable production performance systems for MSMEs creative industry sub sector
Authors: Radyanto M R , Hayati E N 
Published: May 2020

Abstract
Business resilience for Micro, Small and Medium Enterprises (MSME) of Indonesia creative industry sub-sector is evident when it was able to survive when the economic crisis hit the world a few decades ago. Currently this sub-sector as one of the largest foreign exchange earners for the country. These, MSMEs have some weaknesses due to the limited ability of Human Resources (HR) in managing their business. From the available data, it is known that around 65% MSMEs in Central Java have several workers around 1 to 3 people, they only focus their work on production aspects so that they are less focus on other aspects such as financial, legality, marketing, and even product quality. This study aims to create a new model to help MSME run their business by involving 6 elements named HexaCyclus Spiral. This Performance Management System-based model would be facilitating business owners in taking action to improve their business on a sustainable basis if a decline in business performance is found. So that the model that consists of seven key performance indicators was expected to increase the performance of business products with a reporting system based on weekly to annual supplemented with a business early warning system.
The characteristic of bio-pellet made from teak wood waste due to the influence of variations in material composition and compaction pressure
Authors: Iskandar N , Sulardjaka S , Munadi M , Nugroho S , Nidhom A S , Fitriyana D F 
Published: May 2020

Abstract
Central Java and East Java are provinces in Indonesia which have the largest area of teak forest where management is in PERHUTANI. Teak trees can be cut down after reaching the age of 10 years or meet the minimum stem diameter required. Utilization of teak wood for the needs of building materials and furniture is very high because the material is of good quality. In processing teak tree trunks, there is waste from cutting that has not been maximized by PERHUTANI. With good quality teak wood, try to learn about the utilization of PERHUTANI teak wood waste powder for use as a bio-pellet that is included in the Renewable Energy (EBT) category so that they can improve their use and economic functions value. The bio-pellet quality reference standard refers to the SNI 8021:2014 standard. To make bio-pellets, flat die mill type machines are used with speeds of 1660 rpm. As an adhesive used cassava starch with a variation of 5%; 10%; 15% and water variations 10%; 15%; 20% by weight teak wood dust. Compaction pressure variations are obtained by adjusting the gap between the roller and die in the 0.5mm, 1mm and 1.5mm die holes. In research conducted content contained in teak wood pellets can meet SNI product standards. The five SNI standards obtained were bio-pellets having calorific values greater than 4000 calories/gram, bound carbon values ≥ 14%. Volatile matter content is less than ≤ 80%, ash content ≤ 1.5% and has a density of ≥ 0.8. This shows that bio-pellets from teak wood waste can be used for rural communities and can be developed for industrial purposes.
Effect of pressure and welding time on physical and mechanical properties of dissimilar metal AISI 316 austenitic stainless steel and AISI 4140 alloy steel joints using friction welding
Authors: Margono B , Haikal  , Atmaja H I , Wibowo J , Alfayed A , Rananto R F 
Published: May 2020

Abstract
Friction welding is one of the solid-state welding processes that is capable of producing high quality joints for dissimilar materials. This study aims to determine the effect of pressure and welding time on the physical and mechanical properties of friction welding joints of AISI 316 and AISI 4140. The physical are microstructure on interface joint and dimension of flash was investigated. The variation of friction pressure used is 50 kg/cm2, 70 kg/cm2 and 90 kg/cm2, while the time variations used are 35 seconds, 50 seconds and 65 seconds. The results of this study indicate that the greater the friction pressure and friction time applied, the greater the tensile strength achieved is 381.50 N/mm2. The effect of increasing friction pressure variations can reduce the value of weld joint hardness, but conversely if the friction time increases, the hardness value in the weld joint area will also increase. It was proven that in the variation of the minimum friction pressure the hardness achieved was 530.5 VHN but the maximum friction pressure variation only reached 352.2 VHN. The microstructure test show that phase transformation occurs which results in different grains from the parent metal area.
Economic valuation of rice agricultural land in Bogor regency
Authors: Sejati L B , Arifien Y , Maad F 
Published: May 2020

Abstract
This study aims to calculate the total economic value of lowland rice farming in Bogor Regency, and identify the factors that influence land conversion from agricultural to non-agricultural uses. By using the productivity method approach, CVM and benefit transfer, it can be seen that the total economic value of lowland rice farming in Bogor Regency, West Java is Rp. 119,480,139 / hectare / year. The new economic value is calculated based on functions as a food producer, as a function of absorbing labor, as a function of food security stability, and as a function of flood mitigation, not yet included as a function of erosion and sedimentation mitigation, as a function of air conditioning and freshener, as a function of carbon retarding, as a function of recycling organic waste, as well as a function of social culture and rural appeal. Then by using descriptive statistical analysis and simple regression, it is known that the conversion of paddy farming land in Bogor Regency, is influenced by internal factors, external factors, and government policies. Internal factors include: the geographical location of agricultural land, the area of agricultural land owned by farmers, the amount of farmers’ income, transformation of farmers’ economic structure, and farmers’ understanding of multifunctional agriculture. External factors include: population growth, urbanization, the macroeconomic situation, the ability of agricultural land, the value of land (land prices), the opportunity to buy land elsewhere which is cheaper, and the influence of the private sector. Government policy is the factor that is considered to have the greatest influence on the occurrence of agricultural land conversion in Bogor Regency, especially the problem of the implementation of government policies relating to rules regarding conversion of agricultural land that have not been implemented optimally.
Unconfined compression strength of soil using silica sand waste and dust sand foundry as a stabilizer
Authors: Gunarti A S S , Nuryati S , Muttaqin P A , Raharja I 
Published: May 2020

Abstract
The need to improve the subgrade of a highway becomes urgent when the vehicle load exceeds the carrying capacity of the soil. Industrial waste, that increase every day, was proposed in this study as an additive or stabilizer to improve the carrying capacity of the subgrade. Testing was done through laboratory experiments of the mixing original soil with Silica Sand waste and Dust Sand Foundry waste in certain compositions. To test the mechanical properties, the Unconfined Compression Strength Test based on ASTM standards was conducted. The unconfined compression strength (qu) value of the original soil was 0.289 kg/cm2. The highest qu value was shown in the composition of the soil mixture with 2.5% SS and 7.5% DSF which was 0.347 kg/cm2. The qu value increased by 20.07% from the qu value of the original soil, and showed a mechanical improvement in stabilizing soil.
Probabilistic stability and sensitivity analysis of rock slope subjected to seismic loading
Authors: Farichah H , Hutama D A 
Published: May 2020

Abstract
Being located on the Pacific Ring of Fire, Indonesia has to cope with the constant risk of earthquakes which often trigger landslides in mountainous area, causing significant and even catastrophic damage. This paper presents probabilistic stability and sensitivity analysis of rock slope subjected to seismic loading based on Generalized Hoek-Brown failure criterion. Two approaches namely Limit Equilibrium Method (LEM) and Finite Element Method (FEM) were utilized using computer programs of Rocscience Slide and Phase2, respectively. The Generalized Hoek-Brown parameters such as, σci, GSI and mi were distributed normally with their coefficients of variation (COV) of 0.25, 0.125 and 0.1, respectively. The different seismic loadings expressed as Kh of 0.1, 0.3, and 0.5 were then subjected to the rock slopes and the probability of failure (Pf) was evaluated for each slope. Eventually, the results of Pf obtaining from LEM and FEM were compared and the most decisive parameter in slope stability were evaluated in sensitivity analysis. Based on the presented results of the analysis, the probability of failure (Pf) of the rock slopes which are subjected to the seismic loading generated by both FEM and LEM will decrease as the mean of GSI, σci, and mi increase. Moreover, the increment of the D value and seismic loading will induce the probability of failure (Pf) of the rock slopes which are generated by both FEM and LEM increase.
Comparative study of the use of FWD and LWD for flexible pavement evaluation
Authors: Siegfried  , Mulyawati F 
Published: May 2020

Abstract
Falling Weight Deflectometer (FWD) is the standard equipment used for the analysis and evaluation of flexible pavement. The number of this equipment is very limited in Indonesia. For a country owned 48,000 kms of road it is quite important to have an alternate equipment of FWD. Institute of Road Engineering (IRE) has performed the Light Weight Deflectometer (LWD) for the use in low to medium traffic roads for both evaluation and design of overlay. The study has done to compare these two equipment focusing on three parameters i.e Effective Structural Number (SNeff), Surface Modulus (Sm) and prediction of Subgrade Modulus (Esg). There are 15 points tested using FWD and LWD nearly in the same time on the IRE campus that is classified as low traffic volume road. Each point is then analysed to calculate SNeff, Sm, and Esg using the deflections derived from both of FWD and LWD tests. The analysis is done by plotting the parameters calculated from deflections derived from each equipment and then plotting each other. It is found that the plotting fall around the line of equality. This finding goes to the conclusion that the use of LWD of IRE version is acceptable to be used for the analysis of the flexible pavement especially for low to medium traffic.
The effect of waste treatment on greenhouse gas reduction and final disposal site (TPA)
Authors: Sunarto  , Sulistyaningsih T , Jainuri  , Salahudin  
Published: May 2020

Abstract
This paper aims to determine the effect of waste management on the reduction of greenhouse gases that relies on end-of-pipe disposal elements. The analysis of this study uses the application of dynamic systems. This study places that the waste management system is not by following the volume of waste generated growth, the availability of resources, environmental conditions in certain social areas, and the increase in gas emissions will continue to increase along the volume of waste. Also, by using a quantitative approach, it was concluded that in general, open-dumping waste does not follow the rules of sanitary landfills. There is no gas collection and processing system so that it pollutes the atmosphere, and the absence of leachate collection and processing systems results in soil pollution and surface water. Greenhouse Gas (GHG) emissions from the waste sector can be reduced by implementing waste treatment by recycling. Waste recycling has been carried out by the community and the City of Sanitation and Landscaping Office (DKP) of Malang City by increasing its capacity, GHG emissions can be reduced by 85.15% of GHG emissions in the initial conditions.
Rock slope stability analysis using Slope Stability Rating (SSR) method
Authors: Botjing M U , Janat N R , Hilmansyah T , Asrafil  , Saing Z 
Published: May 2020

Abstract
Nupabomba village roads frequently undergo landslides, so that detain transportation access flow pattern as a result of rock slope stability problem, which has become the landslides trigger. Furthermore, to find out landslides prone area slope stability level, an analytical study using a scientific approach is required to reveal this question in the study area. The slope elevation in this area is ± 75 meters, with an average slope angle of 60°, where its lithology consists of Schist, Greenschist, Filite, and Granite. Some of these rocks have different weathering levels (e.g., slightly - high weathering), and there are lots of discontinuity. Moreover, its geological strength index (GSI) value showed around 15-75 with the surface shape of blocky and disturbed. Besides, the uniaxial compressive strength (UCS) value was obtained based on the compressive strength carried out in the field, and slope stability rating (SSR) values have gained the range of 9-81.
Optimization formula of fast disintegrating tablets Ketoprofen β-cyclodextrin inclusion complex with sodium starch glycolate and crospovidone as the superdisintegrants
Authors: Hidayati N , Sulaiman T N S , Nurhaini R 
Published: May 2020

Abstract
Ketoprofen has low solubility in water with unpleasant taste. Efforts to improve solubility and taste are by forming inclusion complexes using β-cyclodextrin. In its development to release Ketoprofen quickly, fast disintegrating tablets (FDT) were prepared. The speed of drug release is influenced by the speed of disintegration tablets. The combination of sodium starch glycolate (SSG) and crospovidone (CP) combines swelling and wicking action which speeds up the disintegration of tablets. This study aims to obtain the optimum value of the combination of both in order to obtain FDT with optimum evaluation parameters according to the requirements. The study made 8 run FDT directly with variations in the concentration of SSG 2–8% and CP 2-5%. Evaluations carried out at each run included flow velocity tests, uniformity of preparation, hardness, friability, disintegration time, wetting time and dissolution. Data were analyzed using simplex lattice design method. The optimum formula predicted results are verified by analysis of one sample t-test. The results showed increasing the proportion of SSG increases hardness, disintegration time and wetting time and decreases fragility of FDT. The optimum formula found at combination of 2% SSG and 5% CP with optimum physical properties and percent release and sweet taste.