bluuebunny/crossref_metadata_2025_split huggingface dataset:
Adaptive Genetic Algorithm for High School Time-Table
Authors: Saptarini N G A P H , Ciptayani P I , Wisswani N W , Suasnawa I W 
Published: July 2020

Abstract
Time-table scheduling in senior high school is complex combinatorial problem. The scheduling process needs much time and susceptible to human error. This human error can lead to the violation of hard constraints. Beside the hard constraints, the good schedule must minimize the violation of soft constraint to ensure the students’ and teachers’ preference can be satisfied. The aim of this study was to build the automated scheduling process using adaptive genetic algorithm (AGA). The AGA implements in this study to flexible the probability of mutation (pm) based on the fitness. The minimum pm was set to 0.01, while the maximum pm was 0.2. The experiment shows that the AGA give the better fitness compared to the original GA. The best fitness reached by AGA was 0.054 with the average of maximum generation was 402. The original GA with fixed pm 0.1 resulted best fitness 0.045 and the average generation was 387.
Proposed Mathematical Modeling of Small Remotely Operated Vehicle (ROV) Movement
Authors: Ayub Wahab Iis Hamsir , Nuryaningsih Rintania Elliyati , Sardju Achmad Pradjudin 
Published: July 2020

Abstract
In designing of Remotely Operated Vehicle (ROV), the most important issue is how to formulate the movements of the vehicle. This paper proposes the mathematical model of ROV movement. Combination of statics disciplines and dynamics of ROV movement are needed to formulate the mathematical model of ROV. Statics refers to the forces and moments that work on the physical system around the equilibrium point, dynamics refers to the effect of force on the movement of the object. Linear mathematical models analyzed can be combined or separated by taking into account the circumstances surrounding environment such as velocity vector of the linear state of the vehicle body (surge, sway and up) and angular (roll, yaw and pitch). Simulation results show that the movement of vehicles, both basic and combined movements have reliable characteristics.
Analysis Of WiFi Network Performance Using FDMI Method
Authors: Darsono Try Adrianto , Wayangkau Izak Habel , Marsujitullah  
Published: July 2020

Abstract
This journal aims to analyze how optimal the performance of WiFI network services, the results can represent the average performance of Internet network services against changes in the value of Quality of Services (QoS) parameters when the highest traffic in the Hotspot Lab IT Laboratory area and Musamus Informatics Engineering Department to support developments in the digitalization era as part of the 4.0 Industrial revolution. Measurement data was got from the results of interviews, observations, and literature studies. Measurement data captured using Wireshark, Fixed Daily Measurement Interval (FDMI) method is the method used in the measurement. The QoS parameters used in the measurement are throughput, delay, and packet loss. Overall, the average value of throughput got is 0.99 MBps. The average value of delay is 124.05 ms is in the very good category according to TIPHON standards. The average value of packet loss is 0.05% with the very good category. The measurement results show that WiFi networks in the Hotspot IT Laboratory area and Musamus Informatics Engineering Department are reliable and meet user needs.
Analysis on Calculation of Vehicle Operating Cost (VOC) Before and After Flyover & Road Widening Operation at Gedangan Intersection in Sidoarjo Regency
Authors: Wibisono R Endro , Mahardi Purwo 
Published: July 2020

Abstract
The main road that connects the city of Sidoarjo to Surabaya is the intersection of Gedangan. By 2018 it has reached saturation by having a poor service level. More severe conditions will occur in the next 10-20 years. One of the government’s efforts to overcome the problem of congestion, damage structure is the construction of flyover or other alternatives by widening the road. The purpose of this study is to determine the characteristics of the traffic and to save vehicle operating costs before and after the construction of a flyover at the Gedangan intersection. The method for predicting Vehicle Operating Costs (BOK) is to use PCI method. This study predicts Vehicle Operating Costs (BOK) to determine cost savings. The scenario for predicting BOK is that 80% of the vehicle volume will pass the Fly Over, and 20% still use the existing road. The results showed that the cost savings of Vehicle Operational Costs (BOK) of existing roads compared to the use of flyover in 2019 was IDR 15 Billion. In 2039 the savings are IDR 77 Billion. Another discussion is that if the road is only widened without flyover, then the BOK cost savings in 2019 will be IDR 4 Billion and in 2039 it will be IDR 27 Billion.
Constructed Wetland with Rice Husk Substrate as Phytotechnology Treatment for Sustainable Batik Industry in Indonesia
Authors: Rahmadyanti Erina , Wiyono Agus 
Published: July 2020

Abstract
This study aims to determine the vegetation efficiency of Canna indica plants and rice husk as a VFCW substrate in the batik wastewater treatment process. The VFCW pilot is made of acrylic with a length, width and height of 0.5 x 0.5 x 0.5 m respectively. Rice husk is filled as substrate to a depth of 0.3 m. Canna indica is cultivated and acclimatized then be planted in VFCW with 6 plants / units. Batik liquid waste is flowed with a hydraulic loading rate of 0.15 m3/d and variations in hydraulic retention time for 3 days, 7 days, 15 days, 21 days, and 30 days using an intermittent system. The results showed Canna indica proved to have a significant effect (p <0.05) on the removal of all parameters consisting of pH, BOD, COD, TSS, ammonia, and heavy metals Cr. Optimal efficiency for all parameters occurred at 21 days HRT which obtained TSS removal values of 91.25%, BOD5 of 91.82%, COD of 89.15%, ammonia of 96.2%, and heavy metals Cr of 81.8%. Effluents produced through the construction of VFCW with rice husks as a substrate and vegetation of Canna indica are able to meet the standards set out in East Java Governor Regulation No. 72/2013.
Study on Non-Engineered Building Vulnerability with Red Brick Masonry Wall through Finite Element Analysis
Authors: Zega Berkat Cipta , Sofianto M. Firmansyah , Prayuda Hakas , Monika Fanny 
Published: July 2020

Abstract
In this study comparing two types of simple house forms that were built without using count analysis. The building uses beams and columns that are usually used in a simple house in Indonesia. The modeled building consists of a square cross section and L cross section, also the modeled wall consists of a full wall, a wall with door openings, walls with door and window openings. Modeling using STERA 3D software to model non-engineered building comprise beams and columns and STERA FEM software for modeling walls. Modeling was carried out to analyze building shear stiffness, earthquake acceleration, and wall deflection when receiving loads. The loading in this study uses dead loads and earthquake loads using the time history method. The results of the modeling are the largest shear stiffness of a simple house building with a square cross-section of 35 kN/cm. The maximum land acceleration resulting is 8.72 m/s2. The largest wall deflection occurs at a load of 20 kN with a deflection value of 58.83 mm on the wall with door and window openings. The high deflection value is caused by the influence of the width openings on the wall and the load go down to the wall.
Experimental Study Additional Brantas Sands Of Clay Density
Authors: Ridwan A , Candra AI , Gardjito E , Suwarno  
Published: July 2020

Abstract
Land functions as a supporting medium for all living activities. The problem that is often encountered is the level of soil stability at each location is different, for this reason the following research is used to determine the parameters of stable soil density when soil structure composed of clay components added 10% of sand from the total weight of the specimen with different diameter variations using proctor testing. The density properties of clay soil after the addition of brantas sand with size variations passed the sieves number 8, 10, 16 and 20 amounting to 10% in perfect solid state the structure of the original soil specimens showed an γd value of 9.61 gr / cm3, in addition of sand 10% with a diameter passing through number 8 shows an γd value of 10.44, at number 10 shows a value of γd 11.77, at number 16 shows the value γd 10.97 and in number 20 shows a value of γd 11.55. the addition of sand to the expansionary structure with low stability can improve the level of stability of the soil structure. Moreover, the addition of sand with a no. 10 sieve diameter shows the value of dry volume density γd of 11.77, the value shows the above average density parameter - average of several other test objects.
Analysis Causes Damage and Prevention of Concrete
Authors: Winarto S , Candra A I , Siswanto E , Ajiono R 
Published: July 2020

Abstract
In the process of construction and post-construction, various problems can often be encountered, with one of them being damage to the concrete which can cause weakening of the concrete structure or damage to the concrete structure. Therefore, the need to prevent such damage by analyzing the causes of damage can be minimized. This research was carried out in collaboration with the contractor, where the first step taken was direct observation and interviews with the implementing contractor. By aiming to get primary data and secondary data so that data conclusions can be made and knowing the causes of damage to concrete structures in the construction phase can then provide advice on preventing damage to concrete structures that can be done. Based on the results of the study, it was found that the potential causes of damaging the concrete structure in the construction phase were problems with the height of the fall of casting, errors in construction, execution, vibrators, and errors in the installation of begisting.
Use-Pole Bamboo Raft Foundation With Full-Scale Model Test Of Deformation Causeway Makassar New Port
Authors: Kakerissa Yance , Akbar Muh. , Utary Chitra 
Published: July 2020

Abstract
The number of buildings or constructions which are at the planning or implementation stage can not be allowed to avoid land base in the form of clay, then, of course, it takes geotechnical engineering to solve the problem by improving the native land so hopefully not happen settlement or deformation. Awareness of the importance of the soil remediation process before building construction on it be an idea to use bamboo as a material provision of soil reinforcement. This research was conducted with the full-scale reinforcement and the raft bamboo poles on the ground with a mounting base plate and observations settlement every day. From the results of modeling on the field at the U-50% condition waiting period ranges from 10-14 days, on the condition of the U-90% the waiting time ranges from 40-55 days, on the condition of the U-95% the waiting time ranges from 53-72 days and the condition of the U-99% the waiting time ranges from 83-115 days. Based on observations in the field, the final drop-readable embankment around 545 mm with a time of consolidation U-90% for 59 days. The results showed that retrofitting with bamboo raft poles can reduce the decline to 60.70%.
Redesign Runway Strip With Evaluate The Geometry, Cut and Fill-In, and CBR at Mopah Airport
Authors: Akbar Muh. , Utary Chitra , M. Rada Yulia Helena 
Published: July 2020

Abstract
Mopah airport has one runway that is supported by an apron which is located at a distance of 472 m from touch down to the size of 18.560 m2. Apron between the runway with two lines connected to the taxiway. One of the airside facilities Mopah Merauke airport is the runway strip that serves as a countermeasure state of emergency when the air out of the runway failure when landing or taking off. the objective of this study is to redesign the runway strip by evaluating geometric, cut and fill and CBR in Merauke Mopah Airportusing KP. 39 in 2015, KP. 93 The year 2015 and KP. 576 in 2011. The data taken is the carrying capacity of the soil and ground elevation using test equipment Theodolite and Dynamic Cone Parameter. Results of testing the design of the runway strip Merauke Mopah Airport with dimensions of the runway with a length of 2500 m and a width of 45 m with the code type “4.C”, obtained the runway strip width of 150 m plan right side and the left side of 150 m. CBR value of research in getting 9.93% which comply with minimum CBR value that is 6%, and a transverse slope of the runway strip elevation plan by 0.8%, to meet the slope of the runway strip elevation plan of each cross-section the importance of the volume of cut and fill with amounting to 174,205.00 m3 to 3008.80 m3 excavation and embankments.
Analysis of Noise Pollution due to Traffic Volume Based on The Types of Automotive Vehicles: A Study of West Surabaya Region
Authors: Kamandang Zetta Rasullia , Wibisana Hendrata , Casita Cintantya Budi 
Published: July 2020

Abstract
Noise pollution often disturbs the people surrounding. The noise levels caused by traffic volume of automotive vehicles is one of the common causes. In order to examine the correlation of automotive vehicles with noise levels, this study implements linear and multiple regression methods into six case study locations in West Surabaya region that has dynamic of both economy and society. This study concludes that based on the obtained R square results, heavy vehicles (HV) has 70,80% of influence contribution with noise levels on the case study locations. It indicates that HV has the largest part in influencing the noise pollution compared to motorcycle (MC) and light vehicles (LV) that has 66,63% and 30,21%. On the other hand, for every 10% of MC, LV and HV volume increasing, the noise levels also increase by 1,726%, 2,032%, and 1,733% respectively. The correlation of MC, LV and HV vehicles with noise levels is represented in dB = 0,0025mc – 0,0056lv + 0,56hv + 49,539 of multiple regression model.
Construction of Collaboration Model of Supply Chain Management on Business Performance and Sustainable Competitive Advantage Using Structural Equation Modeling (SEM) Method
Authors: Waluyo Mohammad Rachman , Nurfajriah  , Swantoro Haris Adi , Filbert Evan , Imanda Pinta 
Published: July 2020

Abstract
Supply chain management strategies can be used to collaborate between members of the supply chain through supply chain collaboration (SCC). Supply chain collaboration can be made using Structural Equation Modeling (SEM). SEM is a statistical modeling technique to test the relationship between complex variables to obtain a comprehensive picture of the overall model. The method in this study is included in the type of causal research, where the population involves all ICON + employees from the group leader level to managers and employees who have and know the process of procurement of goods and services. The size of the sample is based on the maximum likelihood, which is greater than or equal to 100. The results of this study show 6 hypotheses proposed by the researchers. The result is 1 non-significant variable as a factor affecting supply chain collaboration, namely the Trust variable, while Communication, Commitment and Dependency have a significant influence on collaboration supply chain, the results of this study also answer research gaps previously carried out by (Stefany et al., 2014) which state that dependence has no significant effect on supply chain collaboration.
The Use of The Edmodo Application in Blended Learning to Improve Cognitive Abilities of Senior High School Students
Authors: Nurvitasari E , Sumanik N B , Maarebia R Z , Rettob A L 
Published: July 2020

Abstract
This study aims to improve the cognitive abilities of students of High School 3 Merauke through the use of the Edmodo application in blended learning on the learning of hydrocarbon material chemistry. This research is a classroom action research. The object in this study is the students’ cognitive abilities. The research subjects were students of class XI MIPA 7 High School 3 Merauke. The results showed that the use of Edmodo applications in blended learning on the learning of hydrocarbon chemistry material can improve students ‘cognitive abilities with the percentage of classical completeness of students’ cognitive abilities reaching 76.47% in cycle I and 85.29% in cycle II.
Increasing the quality of virgin coconut oil (vco) using activated carbon adsorbent from candlenut shell (Aleurites mollucana)
Authors: Parlindungan J Y , Hitijahubessy H , Pongkendek J J , Sumanik N B , Rettob A L 
Published: July 2020

Abstract
Virgin Coconut Oil (VCO) is one of the product from coconuts. VCO has many benefits in health and industry. One method of making the VCO is often used today is the fermentation. Today many domestic industries produce virgin coconut oil (VCO) but in fact, the industry has not been all good in terms of quality. The use of activated carbon from candlenut shells as an adsorbent to increase the quality of VCO has studied. The parameters tested were water content, free fatty acid, and peroxide. The results showed a decline in water levels from 0.1655% to 0.0597%, peroxide number decrease from 0.1991% to 0.0991%, and the free fatty acid content of 0.4186% to 0.366%.
Moisture Reduction on Essential Oil with Batch Distillation Process from A Polianthes Tuberos
Authors: Sari N K , Ernawati D , Wurjani W 
Published: July 2020

AbstractPolyanthes tuberos mostly used as cut flowers, with limited time, many flowers become rotten and wasted as garbage, sought another alternative to the utilization it is an essential oil, with distillation process to produce essential oils. The results obtained in the distillation process are each adsorbent giving the results of a mixture of vegetable fats and animals with a moisture content of 0.2169%, the amount of water content indicating the level of hardness of adsorbent. The essential oil obtained crystal clear yellow, a very strong distinctive smell of them, did not leave the place on the filter paper and the results obtained 4.279%. The distillation process is a good technique for the acquisition of essential oils from it is with a water content of 0.11%,
Production of Maltodextrin from Cocoyams (Xanthosoma Sagittifolium) Starch Using A-Amylase Enzyme
Authors: Rosida D F , Djajati S , Susanti F S 
Published: July 2020

Abstract
Indonesia has many food crops that can be optimally developed. The developing of cocoyams tuber can be done to improve the economic value. The production of maltodextrin by modifying starch using the α-amylase enzyme. Maltodextrin is used in the food industry as a substitute for food, thickener, and fillers. So far, many starch-modified products was resulted from cassava tubers. The starch of cocoyams (Xanthosoma sagittifolium (L.) Schott) can be developed as maltoodextrin. The cocoyams starch content 50.82% and amylose 18.18%. The aim of study was to produce maltodextrin from cocoyams tuber. In this study using the α-amylase enzyme by treating the volume of the α-amylase and incubation time to hydrolyze the cocoyams starch. This study used a completely randomized design with two factors. The first factor was volume of the α-amylase (0.10 mL, 0.12 mL and 0.14 mL) and the second factor was the incubation time (60, 90, and 120 minute). The best treatment were volume of α-amylase 0.14 ml and incubation time of 120 minutes. The best maltodextrin characteristic of cocoyams was moisture of 4.51%, DE 14.46, solubility 78,90%, reducing sugar 12,50%, starch 4,24%, amylose content 1,95%, swelling power 8,86 (g/g) and yield 96,85%.
Reduction Of Pb And Cr Levels In Paper Industrial Liquid Waste With Ion Exchange Method
Authors: Wahyusi K N , Utami L I , Aprilio S , Fergina N 
Published: July 2020

Abstract
Paper and pulp industry factory is a factory that contributes to national economic development because paper needs per year can reach 100 million tons. But not only the positive impact is given, the negative impact is present because it produces considerable waste. The paper industry’s liquid waste is one of the many wastes containing a lot of metal, for example hexavalent Pb and Cr heavy metals. It is necessary to reduce according to government standards in order to reduce negative impacts on the environment. One way to reduce Pb and Cr levels is ion exchange using cation resin 500 ml paper liquid waste mixed with cation resin at a volume and weight ratio of 10: 0.0017; 10: 0,0034; 10: 0,0068; 10: 0,0136; and 10: 0.0272. Mixing is done with a 190 rpm stirrer motor and the variation of time used is 10, 20, 30, 40, and 50 minutes. The best treatment at a ratio of 10: 0.0272 with a time of 20 minutes. The results obtained by Pb and Cr decreased by 94% from the initial level.
Synthesis of Tricalcium Phosphate From Eggshells with Precipitation Method
Authors: Sani S , Muljani S , Astuti D , Mardayana R , Alfiyani V D 
Published: July 2020

Abstract
Calcium phosphate compounds are one of the biomaterials that are widely used for bone reconstruction because they are biocompatible and have a chemical composition that is close to the inorganic components present in the bone. Two types of calcium phosphate that are widely applied to the bone reconstruction process are hydroxyapatite (Ca10 (PO4) 6 (OH) 2) and β-Tricalcium Phosphate (Ca3 (PO4)2). This research develops the manufacture of β-Tricalcium Phosphate by reacting calcium compounds derived from chicken eggshells and phosphate sources derived from dinatrium phosphate (Na2HPO4) using precipitation method which is carried out with variations in sintering temperature 600 to 1000 °C and sintering time of 1 to 5 h. The results of X-Ray fluorescence (XRF) analysis showed that the Ca / P ratio obtained was 1.74, at the sintering temperature of 1000 °C and the sintering time for 5 h. These results have approached a standard where the ratio of Ca / P on Tricalcium Phosphate is 1.5. While based on the results of X-Ray Diffraction (XRD) analysis that in the sample formed two types of Calcium Phosphate namely β-Tricalcium Phosphate and Hydroxyapatite so that it can be said that the product produced is Biphase Calcium Phosphate. The high percentage of β-Tricalcium Phosphate is 81.9% with the 3 highest peaks, namely at the angle 2θ of 27.83; 31.03; 34.42 is obtained at the sintering temperature of 1000 °C and at the sintering time is 5 h.