bluuebunny/crossref_metadata_2025_split huggingface dataset:
Effect of welding electrode variation on dissimilar metal weld of 316l stainless steel and steel ST41
Authors: Pahlawan I A , Arifin A A , Marliana E , Irawan H 
Published: January 2021

Abstract
The propeller shaft is part of the ship which transmitting rotation from engine to propeller. The shaft is also used in small-medium size of fisherman boat. In order to reduce the cost of production, dissimilar metal bases are used by joining Steel ST41 and 316L Stainless Steel in process. This research was conducted to analyze effect of welding electrode towards tensile strength, macrostructure, and microstructure of Steel ST41 and 316L Stainless Steel welded metal. Two variations of electrode that used in this paper were E309-L and E6013 with Shielded Metal Arc Welding process (SMAW). The other parameter such as current was set at 80 A and voltage was set at 20 V with 20 mm/min welding travel speed. The results of tensile test show average tensile strength max (σmax) of E309-L and E6013 electrode were 581,42 MPa and 599,24 MPa respectively. These results show that welding process is increasing the maximum tensile strength from base material strength level. The microstructure test interpretation shows E309-L electrode has lower possibility to create delta ferrite in HAZ (Heat Affected Zone) rather than E6013 electrode. This means welding process with E6013 tends to have lower corrosion resistance.
Numerical study of aerodynamics across three models car generation
Authors: Vaziri N , Syamsuri  , Lillahulhaq Z , Arifin A A , Achmad F Z 
Published: January 2021

Abstract
Many automotive companies are adding new devices and features to the latest generation of cars. Some changes such as the addition of an adds-on device and car design lead to changes in the aerodynamic characteristics of the vehicle. this study will be carried out on the changes in the aerodynamic properties of the 3 generations of Model cars: Model 1, Model 2 and Model 3 in 2 D Steady state simulation. The car simulated in various numbers of velocities in 40 km/h, 60 km/h, 80 km/h and 100 km/h. The characteristics of aerodynamic force around the car are discussed in this paper from the qualitative and quantitative data. The quantitative which used as measurable data are Coefficient of drag (CD). Quantitative data has better visual explanation of the stream characteristic. The qualitative data which used in this paper are path line and velocity contours. The validation process is conducted with the previous research and the average error was 5%. The results showed that Model 2 has the most aerodynamic design than the other type due to the drag coefficient was lower than the other type.
Lateral bearing capacity analysis of pile foundation using a spring modelling system
Authors: Propika J , Lestari L L , Puspasari A D 
Published: January 2021

Abstract
Pile foundations are often required to resist lateral loads and moments in addition to their primary use as axially loaded members. The interaction between material strength of axial, moment and shear against load capacity and soil interaction is the most important factors in the pile analysis. This study aims to obtain the lateral bearing capacity of pile foundation using a spring modelling system which will be calculated manually for the Kv spring constant in the vertical direction and the kh coefficient in the horizontal direction using the Nakazawa method and SAP 2000 v14.2.5 program. The result shows that the maximum shear load and the maximum axial tensile load received by the pile is still within the allowable shear load and allowable axial tensile load capacity resulting from the manual calculation. However, the maximum axial compression load and maximum moment is exceeded its each allowable capacity. Hence, it is necessary to re-modelling by adding the depth or number of piles.
Design and integration of portable health sensors
Authors: Rasyid M U H A , Martono He Y , Ariyadi B N D , Nasution I N 
Published: January 2021

Abstract
Body Area Network is a measurement concept using sensors with a pair directly attached to the body to monitor the condition directly. The benefits in the world of health are enormous plus remote monitoring capabilities. Currently the use of medical devices as a means of detecting heart conditions, blood pressure, and so forth is still considered less efficient, because in every health tool required several sensors and different platforms. Thus, the idea for integrating these sensors is to improve service quality and tool efficiency and time, to meet the Body Area Network concept, this research proposes a new approach to direct health monitoring. The purpose of this research is to integrate some medical devices such as Temperature, Electrocardiogram (ECG), Electromyogram (EMG), Galvanic Skin Response (GSR) and SPO2 Pulseoxymeter into one platform portable health sensor equipped with two delivery media for data storage that is by using Bluetooth and network Wi-Fi so that in a health check only use one tool. In the application of the results of the use of GSR, ECG and EMG sensors in the form of graphs that can be seen fluctuations based on measurements in the body, and on the use of temperature sensors and SPO2 Pulseoxymeter results from visualization on the sensor in accordance with the measuring value range in normal body.
Performance analysis of two layer leach algorithm based on area partition (tl-leach-p) for wsn
Authors: Rasyid M U H A , Permatasari D I , Karim D J 
Published: January 2021

Abstract
Currently, much research has been done to develop routing algorithms to improve the lifetime of sensors from Wireless Sensor Network (WSN). Routing protocols based on the network structure can be classified into two categories: flat protocols and hierarchical protocols. One of the most popular hierarchical protocols is the Low Energy Adaptive Clustering Hierarchy (LEACH) algorithm. However, LEACH routing has a high packet loss in a busy network. This research propose Two Layer LEACH based on area Partition (TL-LEACH-P) routing algorithm based on the LEACH routing algorithm where the cave layer is done to prioritize the node that can become Cluster Head to decrease energy consumption. LEACH and TL-LEACH-P algorithms are simulated using MATLAB. The results show that the TL-LEACH-P algorithm has a better performance of 60% reaching LEACH in terms of network lifetime. The TL-LEACH-P algorithm has a 50% increase in the round where 50% of the nodes are dead from LEACH. Best TL-LEACH-P algorithm performance is when the k cluster value = 5. And best performance for LEACH algorithm is when the k cluster value = 15.
Physics and chemical activation to produce activated carbon from empty palm oil bunches waste
Authors: Budianto A , Kusdarini E , Amrullah N H , Ningsih E , Udyani K , Aidawiyah A 
Published: January 2021

Abstract
This research was conducted by laboratory-scale trials to make activated carbon from empty oil palm bunches. Empty bunches were palm oil processing industrial waste. This research was an effort to optimize waste management. Empty palm oil bunches were studied to become carbon active. Activated carbon is needed to meet the needs of the food industry and non-food industries. This research aimed to determine the appropriate method, optimal operating condition, and get the specification of standard carbon active. Making activated carbon was carried out by multiple activations; chemical and physical. The feed carbonation process was conducted at 400° C for 4 hours with N2 gas flow. After the charcoal is formed, chemical activation is carried out using an H3PO4 activator with a concentration of 9-15% wt. Physical activity was conducted by heating the activated carbon method in 700°C for an hour. The result of the study showed that multiple activations produced activated carbon, and the quality filled the standard. H3PO4 concentration of 13% was the most appropriate concentration to provide activated carbon with the best quality. The best quality activated carbon, which has produced of this research has complied with Indonesian National Standards 06-3730-1995 with parameters: 3% moisture content, 3.92% ash content, 0.7% volatile matter, 95.38% bonded carbon, iodine number 945.47 mg / g, and surface area of 272.9 m2/g.
Monitoring of road damage detection systems using image processing methods and Google Map
Authors: Sulistyowati R , Suryowinoto A , Sujono H A , Iswahyudi I 
Published: January 2021

Abstract
In the traffic environment, accidents often occur due to road conditions with holes. This can be fatal for motorcycle riders and car drivers. Therefore, this paper aims to provide a road contour damage information system by detecting potholes on the highway and reporting damage on Google’s maps. So road users, especially vehicle drivers, can be careful when they want to pass that road. The method used in this paper, which uses Werner D. Streidt algorithm threshold values and edge detection in digital image processing to detect holes in the road, as well as mark the coordinates of hole locations and uploads them on Google’s maps, using the Raspberry Pi two embedded devices as a management center data, with a 6M NEO U-box Global Positioning System (GPS) sensor, as geotagging location and CSI camera interface. A A raspberry pi 2 for taking pictures of road surface contours. System testing is carried out in several stages at different times. In daytime conditions, in sunny weather, the system’s success rate in detecting potholes is 83.2%. Whereas with tree barriers, the success rate is 67%, with detection failure 33%. In conclusion, this system succeeded in showing all points of the hole location by giving a mark on the Google Map display application.
Maritime industry - ports and supporting activities: literature review
Authors: Monteiro Juvinal Lucas , Lukmandono  , Santoso Pramudya Imawan , Prabowo Rony 
Published: January 2021

Abstract
Queues are waiting for lines from customers to get service. The queue is caused by the needs of consumers to be served beyond the ability of service facilities, so consumers who come cannot immediately get service. Queue problems at ports often occur every day. Ship loading and unloading services is a queuing phenomenon in daily life. This queue can be caused by damage to the equipment that supports loading and unloading, labor, availability of warehouses, and the limited capacity of berths at berths and others. In maintaining optimal port services, it is necessary to avoid long waiting times and low queuing system utilities. Queues at the mooring service system occur due to mismatch between planning and realization. Waiting time for vessels inside and outside the port area is calculated using the simulation method in queuing theory so that it becomes a queuing model. Until finally, it produces the optimum berthing service system. Based on the simulation results obtained value, and which is much shorter than the conditions on realization. The potential causes of these conditions are divided into three factors, namely, internal factors, external factors, and weather factors.
Study of catamaran fishing vessel based on wind energy
Authors: Santoso P , Utama I 
Published: January 2021

Abstract
Amid the Covid19 Pandemic, the world is currently experiencing a difficult time. The impact of the chain due to soaring crude oil prices on world markets has been felt by all levels of society. Responding to this, austerity movements in various sectors are needed in order to create alternative solutions to the dependence of FO to get through difficult times. In the sea transportation sector, the use of fuel for motorized vessels is not only uneconomical but also environmentally unfriendly. The dependence on fossil fuels energy has led to the development of the concept of energy efficient vessels that use alternative energy sources in moving ships. This is anticipated by the re-use of sails in the form of Sailboats (SB) which are applied as fishing vessels. This paper presents a study of the efficient use of wind energy in SB as a boat mover that does not utilize fuel for the development of environmentally friendly fishing vessels. Technical analysis is done through testing the ship model in the Towing Tank then the results are explored by Naval Architect theories. In conclusion, there is a potential savings in fuel consumption by 100% when compared to ships that have only engine-driven.
The experiment of ambient wind speed and argon flow rate on tig welding process
Authors: Suheni  , Rosidah A A , Lillahulhaq Z , Ridhlo I A , Wardani I P 
Published: January 2021

Abstract
Tungsten inert gas (TIG) welding is one of the most popular welding which has high quality welds. TIG welding can be used for all kinds of welding positions and high efficient. During the welding process, the welding specimen and the heat affected zone (HAZ) affected by a series of thermal cycles where the area warms up to a maximum temperature then followed by cooling process. The thermal cycle affects the microstructure of the welding specimen and HAZ. By controlling these parameters to reach the right heat cycle, the mechanical property of the weld metal can be improved and maintain the microstructure of the weld metal. This study is conducted an experiment to determine the effect of different wind velocity around the TIG welding material. Moreover, this study also discuss the effect of shielding gas flow rate on TIG type welding on JIS G 3131 SPHC steel material. The welding area and HAZ the higher the wind speed the hardness value tends to decrease. Because there is a difference in cooling speed and heat input on weld metal and HAZ.
The improvement of sea highway route by using parallel insertion and exhaustive search
Authors: Subiantoro I , Lukmandono  , Santoso P I , Suroso H C 
Published: January 2021

Abstract
Indonesia contains of island and ocean which perform some problems in logistics delivery such as create a gap between west side and east side of Indonesia. A sea highway program were made by president to send logistics to be more effective and efficient. This program has been implemented for four years recently but still has many adjusment such as creating the best route of sea highway. This research try to create a better route of sea highway by using tour constraction to create an initial route in two steps, clark and wright saving matriks and parallel insertion. The second method is tour improvement aims to generate a new route after initial route by using exhaustive search. Five route of sea highway are generated in tour constraction and two route has been adjusted in the tour improvement because of a better score came up. The improvement of fourth route from Depot-Malahayati-Batam-Telukbayur-Depot becomes Depot-Malahayati-Telukbayur-Batam-Depot and second route still being the same but there also another option of route which has 18 score different from the best route score, those are Depot-Sampit-Samarinda-Balikpapan-Pontianak-Depot.
Wind speed prediction using extreme learning machine and neural network for resolving uncertainty in microgrids
Authors: Seprijanto A , Syai’in M , Putra D F U , Rohiem N H , Putra N P U , Munir M 
Published: January 2021

Abstract
Wind energy is one of the several types of renewable energy that exist today. however, wind energy has a high degree of uncertainty due to weather effects. Wind speed prediction is needed to determine the energy that wind turbines can produce at each unit. For optimizing wind speed schedulling, the accuracy of wind speed prediction is considered. Extreme learning machine (ELM) and neural network (NN) is implemented to predict hourly wind speed for 24 hour and power generation from wind turbines can produce. Wind speed probability data is taken from sidrap wind farms in indonesia. To determine the performance of wind predictions based on the error value between actual and predicted, mean absolute percentage error (MAPE) is applied.
The effect of polyethylene glycol addition on the synthesis of solid acid catalyst and its applications in esterification reaction
Authors: Julaika S , Widiyastuti W , Setyawan H 
Published: January 2021

Abstract
Synthesis of a catalyst by a sol-gel method is commonly conducted using a template to form pores to increase the number of active sites. In this work, mesoporous silica-carbon composites were prepared by sol-gel method using polyethylene glycol (PEG) 6000 as the template. Sodium silicate, commercially known as water glass, a cheap material, was used as the silica source. Here, PEG 6000 served as both the carbon source and the template. The silica-PEG composite was then carbonized at 550°C for 1 h to obtain silica-carbon composite. The sulfonate group was grafted into the composite by sulfonation with sulfuric acid at 100°C for 5 h. The sulfonated silica-carbon catalyst had a surface area of approximately 1490.8 m2/g. The very high surface area was able to hold a large amount of sulfonate group resulting an ion capacity of approximately 2.09. The composite was successfully be used as heterogeneous catalyst for esterification of acetic acid with ethanol with a conversion of 90.27%, higher than that of commercially Flotrol F-007.
Design concept of reinforced concrete beams with large web openings
Authors: Pertiwi D , Komara I , Fristian R 
Published: January 2021

Abstract
This paper presents numerical investigations in studying large web openings. Based on the previous guidelines, the web openings in reinforced concrete beams are being investigated. The simple verification design procedure is followed by ACI-318. In general, web openings have to consider a certain position so that each chord sides imply a sufficient area to expand the ultimate compression in flexure and give the appropriate reinforcement. In this case, two openings are placed nearly to one-half from support on each side. The analysis follows the recommended procedure for elastic bending moments and shear forces while the deflections are evaluated both in the short and long-term periods. It is found that the beam with a large web opening meets the required standard in all aspects, but it is indicative of having a large moment.
Determining the weight of the hammer based on expert experience for estimating load-carrying capacity
Authors: Wardani M K , Aulady M F N , Frido W , Hendri S 
Published: January 2021

Abstract
Inexperience geotechnical engineer has difficulty in specifying the best type of weight of the hammer. Here, this study aims to help inexperience geotechnical engineers to decide the optimum weight of the hammer on the pile driving machine. The Bayes method is applied to decide between drop hammer and diesel hammer pile driving machines. Furthermore, we interviewed the expert by several questions about the criteria of the best pile driving machine using a Likert scale. The result suggests that the best type of pile driving is Drop Hammer. The weight of the hammer required to carry out the piling process is 0.9 ton. Recommendations for allowable bearing use the Meyerhof 1976 method. This condition meets the workload that more 141.14 tons at a depth of 26 m when using a square pile dimension of 35 x 35 and 40 x 40 cm. The dimensions are 45 x 45 cm, the recommended depth of piles is 26 m. the allowable bearing carrying when compared with the dynamic capacity using the Hilley, ENR, and WIKA methods meet the requirement. This is given the result of the allowable load-carrying capacity of 170 tons that less than 280 tons until 390 tons at dynamic capacity.
Household electricity network monitoring based on IoT with of automatic power factors improvement using neural network method
Authors: Nugroho D. C. , Mayaratri Y. , Syai’in M. , Hasin M. K. , Rohiem N. H. , Putra N. P. U. , Soeprijanto A 
Published: January 2021

Abstract
The development of installed capacity in power plants in 2018 was 41.696 MW or increased from the previous year in 2017 amounted to 39.652 MW (PLN Statistics, 2018). This has an impact on the reduced availability of fuel due to overexploitation. The highest energy sold per customer group in 2018 was the household customer group that was 41.7% higher than the industrial sector customer group by 32.8% (PLN Statistics, 2018). At present the use of electronic equipment for household needs is increasingly diverse. Many equipment that is often used in daily life is electronic equipment that is inductive load. Inductive load causes the value of the power factor to fall so that the power usage (Watt) becomes less than optimal. To overcome the problem caused by the large number of inductive loads a reactive power compensator is needed which is to use a capacitor. In this final project, a system designed to be able to measure and correct power factors automatically uses the Neural Network method and can monitor power online based on IoT. The results of testing the power factor improvement system were 97.8% successful in the trained electric load and 94.8% in the untrained electrical load.
Voice Pathology Detection Based on Deep Neural Network Approach
Authors: Raj Jeberson Retna , Jabez J , Senduru Srinivasulu S , Gowri S , Vimali J S 
Published: January 2021

Abstract
The advancement of technology offers solution to the complex problems faced by the society and brings the wellbeing of the individuals. Smart healthcare is prominent nowadays for diagnosis, treatment and constant monitoring which reduces visitation of hospital, transport cost and waiting time. Voice pathology is a decease which affects the person vocal cord so that one who facing difficult in speech. If the decease not identified in time, it leads to permanent loss of voice for an individual. Traditionally, the decease is identified through oral examination or manual procedures. Due to the advent of smart phone, one can record the voice and send it to the cloud server for processing. Our system classifies the voice data and provides the decision to the user. This greatly reduces the transport cost, and waiting time for oral examination at medical center. The mobile phone recorded the patient voice data and it will be stored into the cloud. The voice data is synthesized to signals and with the help of deep Neural network the voice pathology can be identified. The system has been tested with the data set and the test result shows promising.
Various Methods of Link Design for Transferring Data in Wireless Sensor Networks for different Applications
Authors: Tiwari Richa , Kumar Rajesh 
Published: January 2021

ABSTRACT
This paper offers the different type transmission schemes used in wireless sensor networks. The wireless sensor network used in a number of applications such as Agriculture, Military, Medical, Multimedia etc. According to the applications there are different quality of service parameters and designing requirements for different layers in network design. While designing any ad hoc network or sensor network many designing principals and challenges are taken into consideration. For the designing of protocols layering in ad hoc sensor network basically a five layer model is taken into consideration. These layers are application, transport, network, Medium access control and physical layer. In this paper different types of designing constraints associated with physical and medium access layer has been introduced for different applications in sensor networks. In that manner this paper helps us to select the designing of a link for particular application.
Single Dual-X Current Conveyor based BASK/BPSK Modulators
Authors: Nand Deva 
Published: January 2021

Abstract
Two voltage mode digital modulators have been proposed i.e. Binary Amplitude Shift Keying (BASK) modulator and Binary Phase Shift Keying (BPSK) modulator. Both circuits use Dual-X Second Generation Current Conveyor (DXCCII) as the active building block and have the advantages of proper input impedances and use of grounded resistor. Detailed mathematical analysis of both circuits are given. The circuits have been simulated with SPICE using 0.35µm CMOS technology parameters. The supply voltage of ±1.8 V is used. Much satisfactory results have been obtained with the proposed circuits.