bluuebunny/crossref_metadata_2025_split huggingface dataset:
Flow pattern analysis on sticky regime and effectiveness of volume chamber for milk production using CFD method
Authors: Alwan H , Bindar Y 
Published: December 2019

Abstract
The Computational Fluid Dynamics (CFD) method is used to evaluate the performance of the spray dryer operation in various geometry and operating conditions. Through this method, the design information needed in the cylinder-on-cone spray dryer construction can be obtained. Especially related to the milk drying process. The numerical solution solved through the CFD method using FLUENT ANSYS 19.0 with turbulent model RNG-kε. The spray drying chamber in this study is represented in 2-D geometry. Flow patterns that have strong backflow can cause high particle end temperatures. This flow pattern is created in the small size of space and wide spray angle. The problem that is often caused in the presence of particle deposits on the walls and product agglomeration. The result is particle deposition that often occurs in the walls of the cone and near the atomizer. While agglomeration occurs in the product collection area. The design of the spray drying chamber which is considered the best to be built is a spray dryer with 2 m diameter and spray angle of 60° and 100° in order to produce the final product with the low temperature and water content.
Comparison on reinforced concrete bar strengthening using CFRP method, the IWF bar support addition, and bar dimension enlargement
Authors: Darwis Z , Kuncoro H B B , Vega M 
Published: December 2019

Abstract
Structure failures often happen whether caused by bad implementation, especially at reinforced concrete bar. Failures on building structure elements might be caused by several factors such as planned age of use, transformation on function, and even improper construction procedure. Thus, the reinforced concrete bar strengthening is required especially on a 10 m bar. This study focus is about comparison on strengthening the original structure of the building using the CFRP method which overlaying the bar surface, adding the IWF bar as a cantilever from below of the desired structure, and enlarging the bar dimensions. The result of the study shows that using 5 m2 CFRP overlaid on flexible reinforcement and 2.5 m2 CFRP overlaid in shear reinforcement get the results in Mn = 207.82 KNm and Vn = 146.33 Kn. Furthermore, additional 400, 400, 13, 31 IWF bar for the strengthening result is in Mn = 1045,32 KNm and Vn = 809,79 Kn. Dimension enlargement to 650 mm x 350 mm of 4D16 reinforced concrete and P10-250 mm reinforced cross-bar resulting in Mn = 529,23 Knm and Vn = 78,56 Kn. Effectiveness analysis is done to select the most effective method considering its strength gained and the cost that required.
The Influence of the use of horizontal pegs at distance of 15 cm to the shear strength of the laminated bamboo beam based on type of adhesive
Authors: Darwis Z , Kuncoro H B B , Aprilian R 
Published: December 2019

Abstract
Laminated bamboo can be used as an alternative elements of building materials. Laminates techniques can be used to form the building materials used as construction in large sizes. Previous studies have extensively covered the beam strength of laminated bamboo, type and crack. The test of the shear strength with the use of 60 MDGL A (Mutilayer Double Glue Line), resulting in shear fracture between bamboo material and not occur in the adhesive. Comparison between high beam size and the width is 120 mm x 60 mm. Further tested the strength of the beam to the shear capacity with four variations of adhesive. Using bamboo outer skin on the surface of the beam and the use of 50 MDGL adhesive variations. The results showed that there was no significant difference in shear strengths between the variations of each adhesive . Beam strength is highest test object is on 50 MDGL C with a value of 24.4 KN load with a deflection of 41.5 mm. The average shear stress laminated beams obtained is on 5.49-6.66 and 4.58 MPa. This strength is still greater than the strength of the wood beams in general, where the wood shear stress is 1.25 MPa class II.
The effect of mixing peatland burning remains as fly ash and peat soil on its California Bearing Ratio value
Authors: Ramdhiani E , Rahayu W 
Published: December 2019

Abstract
Peat has been known for its high compressibility, low shear strength and high-water content. Moreover, when it comes to dry season, peat can easily be burnt leaving the large amount of carbon into the atmosphere also causes significant damage to peatland ecology. Based on these, peat burning remains are used as fly ash and it is expected to improve the strength of peat soils alongside to be environmentally safe. Laboratory tests were carried out according to that condition. A study on the influence of fly ash addition in peat soils was done by comparing the result from CBR (California Bearing Ratio). Different percentages of fly ash (i.e. 15, 20, and 25%) were added into peat soil at optimum moisture content amidst 5% of Portland cement for each sample with a variety of curing time of 2 hours, 1 day, 3 days, and 7 days. Changes were observed in specific gravity, acidity, and the microscopic structure. The CBR test results show that the peat gained strength due to the addition of fly ash, with the optimum result of 5.36% for unsoaked condition and 6.35% for soaked condition. Furthermore, according to the results, the peat soil can be used as a subgrade.
Bio-asphalt on Asphalt Mixture containing RAP
Authors: Sihombing A V R , Subagio B S , Hariyadi E S , Yamin A 
Published: December 2019

Abstract
This study investigates the use of bio-asphalt, derived from coconut shell (BioCS) and straw (BioST) as an additive to determine its benefits in asphalt mixtures containing reclaimed asphalt pavement (RAP). The study was conducted by determining and comparing the laboratory performance properties of four mixtures and the binders extracted from the mixes. The four mixtures evaluated in this study included 30% RAP mixtures with and without bio-asphalt (BioCS and BioST) and comparable virgin mix. The result showed that bio-asphalt was effective in improving mixture performance of 30% RAP mix close to those of the virgin mix.
Comparison of direct SPT method for calculating axial capacity of piles in Jakarta Area
Authors: Henrina S , Bahsan E , Ilyas T 
Published: December 2019

Abstract
Estimating axial capacity of piles using Direct Method are still considered as challenges these days. Estimation mainly achieved after construction is done and field method such as static load test or PDA are used for calculating axial capacity of piles in real field cosnditions. This paper discussed estimation from 8 building project cases from Jakarta and Depok that have complete standard penetration test data and field calculations (static load test & PDA). The main objectives are to observe and correlate the results between every Direct Methods and field methods and to obtain which Direct Method is the most efficient to use for estimating axial capacity of piles in Jakarta area. Direct Methods that are used are Meyerhoff, Shariatmadari, Decourt, Aoki, and Robert. Calculation results showed that the most efficient standard penetration test method is that proposed by Decourt with average result of comparison between estimated axial capacity of piles and field calculation is roughly 1.03. The most underpredicted between every standard penetration test method is the one proposed by Aoki de Alencar with roughly 92% underprediction ratios and the largest overpredicted method is proposed by Shariatmadari with roughly ratios of 56%.
On the finite element bearing capacity analysis of a rib system to be used as shallow foundation construction
Authors: Soelarso  , Antaluca E , Batoz J.L , Lamarque F 
Published: December 2019

Abstract
The work is related to the Ph.D. subject of the first author on the analysis and design of shallow foundation systems in the context of earthquake resistant constructions in Indonesia. We focus here on a particular system called SNSF (Spider Net System Footing) that has been proposed and successfully used for around 10 years. This paper deals with the analysis of a unit cell of SNSF consisting of an assemblage of concrete vertical ribs and horizontal plate subjected to a central loading. We propose a geometrical 3D model and analyses based on 3D solid and shell elements for a detailed static analysis of the structure under central load or under self-weight. We also report some results considering the soil structure interaction, assuming linear elastic properties of the soil.
Performance of asphalt concrete mixture (AC-WC) using asphalt added with the waste of rice husk ash
Authors: Intari D E , Fathonah W , Saputro B 
Published: December 2019

Abstract
This study aims to determine the effect of the Rice Husk ash as additive into bitumen 60/70 penetration of the bitumen characteristics, and determine the performance of a mix of -Wearing Course Asphalt Concrete (AC-WC) using bitumen with added Rice Husk Ash.This research, using the Marshall method that used in some variation of Rice Husk Ash content and asphalt content. Variations are used for grade Rice Husk Ash is 4%, 6%, and 8% by weight of bitumen and asphalt content 4%, 4.5%, 5%, 5.5%, and 6%.These results indicate that the physical addition of Rice Husk Ash making asphalt becomes brittle and adhesiveness decreases can be seen from the decline in value of 1.17% asphalt penetration at levels of 0% to 8%. Judging from the test results obtained that Marshall Stability value decreased by 28.57% of the value of the highest stability.
Design of Carita Beach Coastline Tourism Area at Pandeglang Banten
Authors: Ujianto R 
Published: December 2019

Abstract
Waterfront area currently has a potential as a face of the city, it should not only being the behind area of the city. Waterfront area can be a tourist destination and a place that create social interaction, so that area can be the center of economic growth for the city especially in the field of tourism activity. Waterfront development experience many problems such as the loss of place quality. In the other side, private investment is not clearly regulated and causing the privatization of land in the shoreline area that should be the public space. Communities that received the impact of the development in the shoreline area are not to get involved in the planning process. This study formulates the design of tourism public space in a seaside area with attention to the image of an area and have the quality of public space. By analyzing design area both regionally and environmental context, in the findings obtained several principles that need to be considered to create a coastal tourist area as public space. In this study, planning and designing is required to involve the growth of coastal resorts can be run as a shared vision that avoids conflicts of interest.
Correlation of reinforcement concrete quality based on variations in UPV testing methods
Authors: Andi M , Baehaki  , Khadafi D A 
Published: December 2019

Abstract
Ultrasonic Pulse Velocity (UPV) test includes a simple Non Destruction Test (NDT) testing method, by utilizing ultrasonic waves. In the implementation of UPV testing with direct, semi-direct, and indirect methods give a quick result of different pulse velocity, with the same quality of concrete. Therefore, this study was conducted to get the correlation and correction value of all three testing methods with PUNDIT Lab+ tool on reinforced concrete. The study used a speciment of concrete beams 15x15x60 cm3 with concrete quality K-275, K-250, K-225 each as much as 3 specimen. The average value of the measurement result with the direct UPV method is 12%, 7% and 5% less than the average value of the semi-direct method of UPV direction vertically, the semi-direct method of the UPV direction horizontally, and the indirect method UPV. Conversion of the measurement results for the direct UPV method of the semi-direct UPV vertical direction, semi-direct UPV direction horizontal and indirect UPV can use the regression equation Vd = 0.2462 Vsd-v + 3192, Vd = 0.1073 Vsd-h + 3923.8 and Vd = 0.0195 Vin + 4341.8.
Capacity and performance evaluation of the drainage system Jati Pinggir - Petamburan Central Jakarta
Authors: Wigati R , Notonegoro H A 
Published: December 2019

Abstract
Flood problems become a crucial problem in the city of Jakarta. Jati Pinggir - Petamburan area is one of the affected floods. The density of the population and the narrower open land for water absorption causes the accumulation of standing water. The increased flow of water inundation affects channel capacity. For this reason, it is necessary to examine the ability to exist flood control buildings such as drainage canals, reservoirs and pump houses to deal with flooding with a 10-year return flood discharge in Jati Pinggir - Petamburan. Analysis of regional rainfall data, 10-year return period flood discharge, existing channel dimensions, the capacity of the pond and pump needs were used in this study.
The driver and barrier of implementation green supply chain management (GSCM) in construction projects
Authors: Handayani N U , Rinawati D I , Wibowo M A , Gabriella T , Ulkhaq M M 
Published: December 2019

Abstract
Climate change due to rising greenhouse gas emissions and resource depletion is one of the major challenges of the twenty-first century. Construction waste is not only associated with energy use and waste of materials in the construction process but also other activities that do not add value such as repair, waiting time and delays. Concepts such as waste and value are not well understood by construction personnel. They often do not realize that many activities they carry out do not add value to the work. These issues contribute to a reduction in the value of construction productivity and could reduce company performance. The aims of this GSCM study on the construction sector are to identify: (i) the drivers of stakeholders to implement green practices and (ii) the barriers faced by stakeholders in the implementation of these practices. The research methods are literature study and fields observation, where the experts were asked about their opinions related to barriers and drivers to implement the Green Supply Chain Management (GSCM) in construction. The results showed that each phase of GSCM has barriers and drivers. The barriers and drivers are involved in Green Initiation, Green Design, Green Material Management, Green Construction and Green Operation and Maintenance.
Development wedding planner using extreme programming method
Authors: Novianti E , Susilawati E A , Sesunan M F , Syamsiyah N , Astuty E Y 
Published: December 2019

Abstract
This research will provide wedding planner with time management and comparison budget with several Indonesian Traditional wedding package. The development of wedding planner will use extreme programming method and implement project management plan to arrange the wedding. The development of this application will use CodeIgniter as a framework which is easier to continue on the next development. The final result of this research is a wedding planner to help bride and groom to easily maintain their schedule with wedding organizer on their pre-wedding. Moreover, Indonesian bride and groom more into traditional ceremony and on the budget with tight schedule, this wedding planner will compare several package and flexibility with schedule and reminder to give alert in order to keep on the timeline.
Development of an android document management
Authors: Dewi L P , Noertjahyana A , Wahono T J 
Published: December 2019

Abstract
Many previous researches shown the percentage of population using mobile technologies was increasing constantly, included in Indonesia. This growth apparently also supported by Android penetration as an Operating System and the easier of internet access. Mobile phone has become the main device in daily life, included in business activities. People increasingly need a mobile phone as gadget for storing various documents. This research is designed to address the document management application in Android. Application help to organize, retrieve and modify document contents. With this Android application, users can use it to store documents and can combine several documents as desired. This application works based on HTML format file. Therefore, the original files are converted to html format. While the conversion process cannot be done directly, but the original file is converted to pdf and then converted to html. All the conversion process is done in the server and application retrieve the result as HTML file for displaying in the mobile phone screen. During the converting process, it is found that the number of concurrent users is not relevant with the server respond time. The server respond time is determined by document size.
Development of guide stick navigation for blind person using digital compass and global positioning system
Authors: Agusutrisno  , Wiryadinata R , Novianto M N R 
Published: December 2019

Abstract
The limited use of navigation technology poses a risk to blind person becoming lost, while in a foreign place and causing them to rarely travel. The purpose of this study is to design guiding sticks for blind person by tracking and homing. The position of coordinates and wind direction is processed into information on sound signals and vibrations. The method used in this research is GPS bearing and inverse angle, using compass and ultrasonic sensors. Afterwards, the data output in this system is directional information in the form of sound, besides information in the form of an obstacle when in front of the sensor. The test results prove that the GPS bearing method can produce a more stable direction. However, GPS accuracy can decrease when it is blocked by trees and buildings. While the inverse angle method, GPS data is stored on the data logger, which does not require GPS accuracy when determining direction. The angle of the direction is more accurate if the average angle when tracking is not too wide.
Comparison of acceleration python library on design and implementation of QRS detection module from ECG heart signal
Authors: Wicaksana C A , Febriani R , Muhammad F 
Published: December 2019

Abstract

Electrocardiogram (ECG) signal is one of importance signal from our body that sourced from heart. There are many benefits that can be obtained from ecg signals, for example can determine whether sleepy/stress or not, and several diseasses like arrhytmia, hypertension, heart failure, etc. In this research, we created sub-module for extraction feature for ecg signal using GPU Acceleration, but in this research only emphasis on QRS detection and peak detection from ecg signal. The input will be ecg Signals and the output will be array of peak in every row. There have been various research trying to extract or detect QRS and peak based on Pan-Tomkins Algorithm, but this research will make use python and will compare the acceleration using some library. The flow comprise five main step, (1) load ecg signal, (2) filtered ecg, (3) derivative from filtered ecg, (4) squaring from derivative ecg, (5) convolution squaring ecg, and (6) peak detection using Fiducial Mark. The overall module has been succesfully implemented and compared in python. The result show that computation using numpy is still better and faster for small array data. The Output of peak of array can be used to the next module.
Monochromatic and rainbow 4-connectivity of moon graphs
Authors: Shulhany M A , Rachim D K N , Rukmayadi Y 
Published: December 2019

Abstract
Monochromatic and rainbow connectivity are known as the concepts that can calculate the minimum number of passwords and security systems. In this paper, a security system is represented by a special mathematics object, namely a graph. The study focuses on the moon graphs or Mon. Moon graphs are chosen because it is one of the 4-connected graphs that has a minimum number of edges. The research method used is mathematical modeling equipped with direct proves and contradictions. The conclusion is that there is an efficiency of 75% when using the monochromatic connected number, and there is an efficiency between 62.5% - 75% when using the rainbow 4-connected number.
Design of direct load control device and its effect on load reduction
Authors: Garniwa I , Wardana N S 
Published: December 2019

Abstract
Demand for air conditioning is rising at an unprecedented level. Sudden increase in air conditioning usage has a potential of destabilizing the power grid and at extreme condition can cause power outages. Ability to control air conditioning is therefore a very significant subject for both the electric power utility and electric power consumer. In some developed countries, this is realized by a program called demand-side management. The progress of information technology and the increasing affordability of the cost of fabricating electronic devices have given rise to new concepts in the implementation of demand-side management programs, namely the direct load control method. Direct load control is a mechanism that allows demand-side management programs to run automatically without interference from consumers. This is done by directly controlling consumer electricity equipment through the internet or other wireless communication networks. This study analyzes a method to design a controlling device to be used in direct load control implementation. Load demand of the system is compared between before and after the installation of direct load control devices. Significant load reduction is noticed after the installation of direct load control devices.
Analysis of implementation UPFC for optimizing power flow & improving power system stability in Z power system
Authors: Nugroho A A , Rahardjo A , Setiawan A , Jufri F H , Husnayain F 
Published: December 2019

Abstract
In electric power systems, it will started from the generation phase until the distribution phase through transmission lines must take place well. The purpose of study is to analyze the implementation in optimizing the power flow and improving stability in Z Power System. Therefore, it is necessary to have sufficient electricity distribution so that the electricity sent can be as efficient as possible. In the Z electric power system, there are many problems in electric power transmission, namely loading on uneven channels and the threat of extinguishing in the event of a disturbance. Uneven load is caused by differences in impedance on the channel. Blackouts occur because the channel on the Z is a generator evacuation route where the area is crucial if a disturbance occurs. Therefore, a tool is needed to prevent it. One solution to this problem is to use a power electronics device called UPFC. The simulation results show an even distribution on the all transmission lines connected to substation of Generators will be decrease up more than 3% of the normal loading. In addition, the UPFC can also improve stability by compensating for the active power and reactive power needed by the system.
Transient stability improvement by FACTS devices: A Comparison between STATCOM and SSSC in an extra high voltage transmission system
Authors: Wibawa B C , Prastiantono A , Aryani D R , Setiabudy R , Husnayain F 
Published: December 2019

Abstract
Loss of 500 kV A–B transmission line causes voltage instability in surrounding subsystem. This condition may cause further disturbance in the whole interconnected system. Improvement of voltage stability can be handled by adding FACTS devices, such as Static Synchronous Series Compensator (SSSC) and Static Synchronous Compensator (STATCOM). SSSC and STATCOM have the capability of dynamically controlling the power flow through a line. This paper aims to compare the performance of both devices to increase system stability. These methods are compared by analyzing the bus voltage, active power in line and rotor angle. As a result, this paper shows that the implementation of STATCOM is more stable in state of SSSC.