bluuebunny/crossref_metadata_2025_split huggingface dataset:
The Effectiveness of Incinerator at the Integrated Waste Treatment Plant in the Campus of Engineering Faculty - Hasanuddin University
Authors: Lando A T , Djamaludin I , Arifin A N , Oktorina N , Danah R , Sulistyowati M F 
Published: July 2020

Abstract
Waste is an endless environmental problem. The amount of waste production has increased due to the increasing population. Besides being produced in a city, waste generation is also produced by universities or campuses. One of them is the Gowa campus, the campus of Faculty of Engineering, Hasanuddin University. Current waste management is carried out by holding, collecting and burning in open areas without further management. It can cause environmental pollution and health problems. The objectives of this study were to determine the amount of campus waste generation, to analyze the needs of incinerators in campus, to determine incinerator tools, and to determine the advantages, disadvantages, efficiency and effectiveness of the incinerators in Gowa Campus. The results showed that the amount of waste generated at the Gowa campus was 0.25 liters/person/day and 0.12 kg/person/day. This incinerator requirements analysis uses the geometry method and the efficiency and effectiveness method. From the calculation, it is known that the use of incinerators for the next ten years is one unit. The disadvantage of using an incinerator is that the cost is very high. However, the advantage is that it can reduce waste generation and overcome environmental and health problems. The comparison between Double Chamber and Maxpell incinerator gave the results that the most effective and efficient is the Maxpell incinerator with an effectiveness of 97.5% and efficiency of 17.17%.
Impact Assessment of Traffic Emission on the Respiratory System of Non-Smoking Traffic Policemen in Palestine
Authors: Madhoun W A , Salem E , Eljedi A , Isiyaka H A , Ros F C 
Published: July 2020

Abstract
This study was carried out to investigate the effects of prolonged exposure of non-smoking traffic police men to vehicular emission within the northern Gaza Governorate-Palestine. Samples of atmospheric pollutants such as PM10, CO and CO2 were collected alongside respiratory data involving lung function, chest and respiratory status and direct physical examination. This was done in order to understand the level of association between respiratory status such as effect on breathing, upper respiratory tract irritation, frequent cough and eye irritation. Chi-square statistical techniques and descriptive statistics were applied in the datasets. The result shows that there is a strong association between air pollution and respiratory disease with a p-value 0.027 at significance of alfa 0.05. The statistical result shows that about 20 non-smoking traffic policemen have upper respiratory tract infection, 15 with frequent cough symptom, 6 with shortness of breathing and 25 with eye irritation. This study is an indication that vehicular emission within the study area is a primary source of pollution that possesses a risk in exposing non-smoking policemen to series of respiratory diseases. Government agencies and other stakeholders should provide preventive measures in either reducing the number, concentration and sizes of pollutants emitted or provide protective measures to reduce the level of exposure of traffic policemen and other habitants.
A Study of Assessment and Mapping of Carbon Footprints to Campus Activities in Hasanuddin University Faculty of Engineering
Authors: Zakaria R , Aly S H , Hustim M , Oja A D M 
Published: July 2020

Abstract
The Hasanuddin University Faculty of Engineering in Gowa is the largest engineering campus in South Sulawesi. The lecture activities are very complex which are not only teaching and learning but also households and offices activities. Therefore, it is important to know the mapping of existing carbon footprint on the campus due to the complexity of the campus activities. The purpose of this study is to determine the level and mapping of the carbon footprint on campus. The method used is to halve emissions into primary and secondary carbon footprint emissions. The results of this study indicate that the greatest emissions is generated from the secondary carbon emissions which is electricity consumption amounting to 1,315,429.63 KgCO2/Year, and the lowest emissions is resulted from the use of paper at 49.39 kgCO2/Year. For the buildings the highest CO2 emissions is generated from the Architecture Department building at 289,176.26 KgCO2/year and the lowest CO2 emissions is generated from the Naval B Department building at 20,599.20 KgCO2/year. The mitigation scenario in reducing CO2 emissions effectively is by implementing Earth Hour for 1 hour every month which can reduce electricity consumption by 582,541.78kWh/Year and CO2 emissions at 164,428.70 KgCO2/year. The effective scenario to decrease waste is by implementing 3R with 2% waste reduction which is 167,332.79 Kg/Year and emissions CO2 are 4,772.41 KgCO2/Year.
Partial Discharge Analysis on Crossed-linked Polyethylene (XLPE) Cable 150 KV
Authors: Salama M , Ikhlas K , Wahyu S M 
Published: July 2020

Abstract
Partial discharge is the flashover of sparks that occur in an insulating part. as a result of the high potential difference in the insulation. Partial discharge can occur in solid insulation materials. It is play an important role in the electrical power system to separate two or more conductor of electric voltage. So, between these conductors do not occur flashover. The material was chose as the insulation material for high voltage equipment is polymer material, it is because in addition to having a high breakdown voltage. Polyethylene is one of the materials included in the polymer group, generally better known as plastic because the material is thermoplastic. There are several methodologies before conduct this research, that includes literature studies. Literature Studies is a research method by finding material from various libraries on topics that will be discussed in this research. Do Partial Discharge testing. And then, record the data obtained. From the experiments that have been done, the results show that a good Partial Discharge value is below 10 pC, if the cable has more than doubled from the normal value, the cable have been damaged or have been consumed by the age of the cable.
Interactive Learning Media Based on Android for Computer Programming Course
Authors: Achmad A D , Achmad A , Putra Z M 
Published: July 2020

Abstract
Computer Programming is one of the basic compulsory subjects for the electrical engineering field. This subject needs continuous practice so that it can be mastered well. This study aims to develop an interactive learning media based on Android so that students can practice anywhere. The interactive learning media for computer programming course takes in explanation of operator c++, input-output statement, program structure, data type, condition, repetition, string, and array, complemented with evaluation facility using the cosine similarity method so that the automated essay scoring feature is available. Interactive features provided in this learning media are the auto complete syntax and function in the code editor. For the evaluation used the black box testing method to test the functionally of the android application and the distribution of questionnaire to determine the response of students. The responses of student have proven that the level of practically of this interactive learning media is 87.5%.
Smart City Application: Community Survey System of Urban Comfort Level
Authors: Warni E , Zainuddin Z , Amperiento M F 
Published: July 2020

Abstract
Based on the projected increase in urban population in Indonesia released by the Ministry of PUPR and Bappenas in 2017 that there was a significant increase in urbanization, which is estimated that in 2015-2035 the population in urban areas will exceed the population in rural areas (66.6% of the population urban and 33.4% rural population). Increasing the number of the urban population needs to get proper handling from the government. If not, it will trigger the emergence of various urban problems ranging from the physical city to the problems that will have an impact on the reduced level of comfort in life in the region. Based on this, it is necessary for the participation of city dwellers in playing the role of planners, actors, and supervisors of city development. This research work develops a framework which uses fuzzy Inference System to calculate urban comfort level, starting from a questionnaire-based survey. There are seven input variables used to produce an output of urban comfort level. Based on the stages of using the Mamdani Model Fuzzy Inference Logic System starting from the formation of the fuzzy set, the application of the impulse function, the composition of the rules to the process of affirmation (defuzzification), it can be proven that there is a correlation between the input variables so that it can determine the output of urban comfort level results. The outcomes help the city government in making public policy on city development.
Control Design of Automatic Voltage Regulator to Improve the Voltage Stability at Sengkang Power Plant, South Sulawesi Indonesia
Authors: Gunadin I C , Muslimin Z , Ilyas A M , Siswanto A 
Published: July 2020

Abstract
The change in voltage at the generator terminal is highly correlated with the change in reactive power at the center load. There are several reactive power sources in the power system including those from field amplifiers that are controlled by equipment called Automatic Voltage Regulators (AVR). Changes in reactive power in the system will change the voltage profile including the voltage at the generator terminal. To maintain the voltage level on the generator terminal, the AVR must be adjusted properly. Determination of the value of the amplifier gain on the AVR largely determines the performance of the AVR in stabilizing the voltage. Wind Turbine penetration greatly affects the system voltage. This research is to see the impact of voltage changes due to wind turbine penetration in sulseltrabar interconnection systems. Determination of AVR gain is generated from the Routh-Hurwitz equation. Furthermore, in this study PID control will be applied to increase the AVR output response. Determination of the correct Kp, Ki and Kd constants is obtained with the help of a MATLAB simulation model. The simulation shows that using a PID controller, the overshoot and settling times obtained are better. The maximum exceeded voltage is 1 per unit and the settling time is 10.15 seconds.
Design and Implementation of REST API for Academic Information System
Authors: Prayogi A A , Niswar M , Indrabayu  , Rijal M 
Published: July 2020

Abstract
With the increased number of information systems used in an organization, there is also an increased importance of data exchange between these systems. This research deals with prototype development and performance analysis of Rest API for academic information system. Rest API was developed using two different server technologies, NodeJS and PHP. The prototype was developed on top of a database server using one sample table that represents employee in a higher education institution. For each of the Rest API developed, there were 2 types of endpoint created. Experiment was set with one database containing a single table and utilized Apache Jmeter to simulate up to 1000 concurrent requests. The results of the experiment show NodeJS implementation of REST API consistently has better performance compared to PHP based REST API implementation. NodeJS implementation reached 100% throughput for up to 1000 concurrent requests, while PHP reached 48.70% throughput when serving the same number of concurrent requests.
Stability Analysis and Fault Changes on Wind Turbine Effect in Multi Machine Power System
Authors: Ashad B A , Siswanto A , Gunadin I C , Yusran  
Published: July 2020

Abstract
This study presents stability analysis using a new approach to model the disturbances that occur in multi-machine systems connected with wind turbines. Consideration of stability and operability of conventional electric power systems planning and developing facing problems with the integration of installations in wind power plants (WPP) is needed because the current system is connected with renewable energy. This study highlighting the effects of WPP connected to a multi-engine 9 bus system from the effect of changes in disturbances occurring on several buses when operating. Disruption in multi-machine systems connected with wind turbines can affect system stability. The noise changes from bus to bus in the voltage drop effect on the system bus. The effect of wind turbine when a fault has a small moment of inertia can make the system unstable on the bus. The results of simulations carried out using ETAP to observe system stability have been carried out. The simulation results show that a system disruption that occurs in a multi engine system connected to the wind turbine does not result in a decrease in the bus near the fault then the stability decreases.
Sensitivity Analysis of Net Present Value due to Optimal Pit Limit in PT Ceria Nugraha Indotama, Kolaka Regency, Southeast Sulawesi Province
Authors: Anas A V , Amalia R , Qaidahiyani N F , Djamaluddin  , Herin S R D 
Published: July 2020

Abstract
PT Ceria Nugraha Indotama is planning to open a new mining site in Lapaopao Block area. In order to determine the most profitable pit design on this new area, pit limit optimization is required. Pit limit is optimized by considering economic parameters, geotechnical parameters, and production target. The optimal pit limit generates the highest Net Present Value (NPV) which is affected by economic parameters. The objective of this research is to analyse the NPV sensitivity of pit due to the changes of economic parameters namely mining cost, processing cost, and selling cost by using sensitivity analysis. Data used in this research were drill hole, ore and waste density, slope geometry, production target. The planned production target, ore price, recovery factor, dilution factor, mining cost, processing cost, and selling cost. The analysis results showed when mining costs increased by 20%, NPV decreased from $2,407,032 to $1,683,430 and when mining costs decreased by 20%, NPV increased from $2,407,032 to $3,130,635. When processing cost increased by 20%, NPV decreased from $2,407,032 to $2,133,523 and when processing cost decreased by 20%, NPV increased from $2,407,032 to $2,680,542. When selling cost increased by 20%, NPV decreased from $2,407,032 to $1,995,755 and when selling cost decreased by 20%, NPV increased from $2,407,032 to $2,818,310. It indicated that the economic parameters significantly affect the NPV and most sensitive to the mining cost parameter changes.
Identification of Landslide Disaster Potential based on Weathering Grade of Rock in Parepare City South Sulawesi, Indonesia
Authors: Busthan  , Safruddim  , Pachri H 
Published: July 2020

Abstract
The purpose of this research is to identify the potential of landslide disaster based on weathering grade of rocks from selected areas. There are three aspects of field observation method used in this research, consist of slope geometry, lithology, and weathering grade of rocks aspects. The result shows that the rocks on research area have been slightly to completely weathered, some areas have became residual soil and slope angles of the research area varieties from steep to very steep. With those condition of weathering and slope angle, the research area will be slightly to very susceptible to landslide. The landslide models or types that will occur are debris slide and debris fall.
Characteristic of Variable Compression Ratio Diesel Engine Operating on Diesel and Biodiesel B20
Authors: Amaliyah N , Mire B , Putra A E E , Syam M , Zakariah H 
Published: July 2020

Abstract
The limitation of natural resources especially crude oil employed in automotive engine has made an attention to switch over to biodiesel. Biodiesel is known as carbon neutral and produce no carbon dioxide leads to decrease of pollution and potentially improve the engine performance. In this study, an experimental investigation on variable compression ratio diesel engine is observed based on the engine performance using the VCR Engine test setup 1 cylinder, 4 strokes with EGR (computerized). The effect of compression ratio change on the torque, specific fuel consumption (SFC), indicated power, and brake thermal efficiency has been studied using mineral diesel and biodiesel B20. When increasing the compression ratio from 13 to 18, it was found that torque was significantly increased when using biodiesel B20. As the torque increase resulted in higher indicated power. The decreasing of SFC were about 44% and 11% for mineral diesel and biodiesel B20 respectively. Specific fuel consumption was optimum at 0.21 g/kW.h at a compression ratio of 16 using mineral diesel.
Energy Absorption Analysis of aluminum Filled Foam Tube Under Axial Load using Finite Element Method with Cross Section Variations.
Authors: Renreng I , Djamaluddin F , Furqani F 
Published: July 2020

Abstract
This study aims to determine the effect of the use of aluminum-filled foam tubes on crash boxes and the effect of cross-sectional variations in the use of aluminum-filled foam tubes on crash boxes. There are several parameters to determine crashworthiness performances such as energy absorption and deformation. Test specimens used are single walled (SW), single walled foam filled (SWFF), and double walled foam filled (DWFF), where DWFF is varied into 4 different wall thicknesses. All models have validated with experiment data from relevant reference and it evident that there are good agreement between simulation and experiment results. Tubes are impacted by rigid wall as impactor with velocity 0.4 m/s. From the simulation results, it was concluded that the aluminum crushbox construction added with aluminum foam is able to absorb more energy, where the recommended thickness is neither too thin nor too thick. Tube of DWFF 3 has energy absorption of 11.911 Joule, however the highest of deformation value is 178.66 mm for SWFF.
Potential of Work Related Musculoskeletal Disorder in Traditional Salt Farmers
Authors: Bakri I , Mudiatuti R D , Mulyadi  , Darmawan A , Akmal  
Published: July 2020

AbstractThe purpose of this study was to identify work postures and determine the risk of health problems due to the body postures of traditional salt farmers. The sample used in this study was 37 traditional salt farmers from Pundata Baji, Pangkep Regency - Indonesia. The analysis techniques used were the Rapid Upper Limb Assessment (RULA) and Rapid Entire Body Assessment (REBA) methods. The results show that based on the RULA score, there were two work postures that require investigation and change as soon as possible (urgently) (Level 4). As for the REBA score, there was one posture that is included in the very high-risk category, which needs improvement right now. Subjective complaints data show that the most complaints from traditional salt farmers occur in the back area with a percentage of 72.97%. This is caused by the fact that most work postures are carried out in a bent position for a long time.
Hardness Improvement of Aluminum Reinforced with Carbon Nanotubes through Forging and Friction Surfacing Process
Authors: Arma L H , Arsyad H , Syahid M , Iskandar E , Nurhudaedah  , Asruddin  
Published: July 2020

Abstract
This research deals with the improvement of hardness property on the composite material made from aluminum matrix reinforced with carbon nanotubes (Al-CNTs). There were two experiments conducted to enhance hardness property; forging and friction surfacing process. An axial mechanical force forged the Al-CNTs composite up to 40% of height of a cylindrical aluminum. A thermo-mechanical force was also applied in producing Al-CNTs coating by the friction surfacing process using Al-CNTs composite rod. Then, the hardness property obtained from these two processes was investigated. Results of the experiments showed that the hardness of Al-CNTs after the forging process improved 40–50% due to high amount of dislocation during forging which avoids deformation. This was indicating that 1 wt% CNTs does not decrease the hardenability of aluminum alloys. Meanwhile, the hardness Al-CNTs coating was not altered too much by the process of friction surfacing. This is becaused that the homogenous dispersion of the CNTs have occurred during the stir casting process.
Six Sigma Implementation in Quality Evaluation of Raw Material: A Case Study
Authors: Darmawan A , Bahri S , Putra A T B 
Published: July 2020

Abstract
The study aims to evaluate the quality level of raw material in order to improve its quality. This study is constructed based on the implementation of six sigma methodology. Six Sigma is one powerful tool that used in this study to identify the problem, determine the quality level, and to develop the improvement comprehensively. Five phases of the model has been structured by stages respectively. Six sigma had been implemented in many kinds of industry, particularly in production process phase. However, there is a challenge to implement the methodology in other phase in supply chain in the context of developing country. The implementation was conducted on receiving raw material process part in the industry. The result showed some defects identified dominantly; damage seed, broken seed, insects, and moldy seed. There are 6734.13 possibilities of raw material in experiencing defect per million opportunities (DPMO). Lack of knowledge of the workers about the raw material and lack of supporting equipment are the two main causes of poor quality of receiving raw material process.
Structural Modeling Using 2D Shell Element to Predict the Initial Plastic Condition of Tubular Frame Structures
Authors: Asykur  , Hadiwidodo Y S , Handayanu  
Published: July 2020

Abstract
A Fixed Jacket Platform is usually designed using tubular structures in which every steel pipe has a thickness and diameter. Generally, for the structural analysis of this structure, the tubular members are represented using 1D beam elements. But stress distribution, plastic strain and also ovalization around the tubular member cannot be determined by a beam element. In this research, all tubular structures were modeled using 2D shell elements to identify how the stress distribution around a tubular member is. And the non-linear analysis was carried out to identify the initial plastic condition. This study was focusing on the splash zone where this area was assumed to be exposed to the extreme wave in 8 directions according to the API RP2A-WSD code, in addition to the structure weight and deck load. Due to each direction of the wave loads, the stress distribution and initial plastic condition are studied. The modeling and non-linear static analysis in this study were done using Altair Hyperworks software.