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Astonjadro
Published by Universitas Ibn Khaldun Bogor
ISSN : 23024240     EISSN : 26552086     DOI : http://dx.doi.org/10.32832/astonjadro
Core Subject : Engineering,
Civil Engineering, Building, Construction & Architecture
Astonjadro: Jurnal Rekayasa Sipil adalah jurnal ilmiah dibidang teknik sipil p-ISSN : 2302-4240 dan e-ISSN : 2655-2086. Jurnal Rekayasa Sipil Astonjadro diterbitkan untuk mengapresiasi dan memberikan informasi ilmiah bagi peneliti, dosen serta para profesional. termasuk dalamnya pengembangan model dan konsep penelitian yang mengacu secara berkesinambungan. Jurnal Astonjadro diterbitkan oleh Fakultas Teknik dan Sains Universitas Ibn Khaldun Bogor, terbit dua kali dalam satu tahun yaitu bulan Juni dan Desember.
Arjuna Subject : Teknik (semua kategori) - Teknik Sipil dan Struktur
Articles 507 Documents
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Analysis of Drowsiness Detection based on Images Using Convolutional Neural Network Nasihin, Anwar; Akbar, Habibullah; Firmansyah, Gerry; Tjahjono, Budi
ASTONJADRO Vol. 13 No. 2 (2024): ASTONJADRO
Publisher : Universitas Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/astonjadro.v13i2.14888

Abstract

Drowsiness detection is crucial in maintaining the safety and alertness of individuals, especially in high-risk situations such as driving or operating heavy machinery. This research aims to develop a drowsiness detection system based on facial images using Convolutional Neural Network (CNN) with a focus on the AlexNet method and its comparison with ResNet. In this study, facial image data was collected from various conditions of drowsiness and normal conditions. Image preprocessing was performed to standardize the size and ensure consistent image quality. AlexNet and ResNet were implemented and trained using the image dataset to identify distinctive patterns that differentiate drowsy faces from faces in a normal state. The results of the experiments showed that the use of AlexNet and ResNet methods effectively detects drowsiness in facial images with high accuracy. However, there are performance differences between the two methods. ResNet demonstrated superior performance in certain conditions, while AlexNet showed advantages in other cases. This research contributes to the development of facial image-based drowsiness detection technology applicable in various fields, including smart vehicles and security systems. The comparison results between AlexNet and ResNet also provide valuable insights for selecting the most suitable CNN method for drowsiness detection applications based on facial images.
Development of Public Electric Vehicle Charging Stations (SPKLU) in Makassar as an Electric Car Supporting Means Nur, Muhammad Yusuf; Nur, Nur Khaerat; Anugrah, Anugrah
ASTONJADRO Vol. 13 No. 2 (2024): ASTONJADRO
Publisher : Universitas Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/astonjadro.v13i2.14893

Abstract

Electric vehicles are a potential solution for reducing greenhouse gas emissions and dependence on fossil fuels. However, a successful transition to electric vehicles depends on the availability of adequate charging infrastructure. Therefore, this journal aims to describe the development of Public Electric Vehicle Charging Stations (SPKLU) in the city of Makassar, including an analysis of the obstacles, benefits, and steps taken in the development process. This thesis discusses the latest condition of the electric vehicle battery charging infrastructure, especially the electric car General Electric Vehicle Charging Station (SPKLU) located in Makassar. This thesis also discusses the development of electric car sales in Indonesia, especially in the city of Makassar and other cities around it. How to charge electric vehicle batteries either through portable charging, wall charging or charging at SPKLU as one of the supporting infrastructure for electric vehicles. Programs carried out by both the Government and PLN in an effort to encourage people to switch to electric vehicles to reduce air pollution in big cities and also reduce the use of fossil fuels.
Effect of fine modulus of coarse aggregate on the mechanical properties of concrete submerged in sea water Sulkarnain, Sulkarnain; Erniati, Erniati; Gusty, Sri; Ritnawaty, Ritnawaty; Ashraf, Ashraf; Huda, Miftakhul; Putri, Herwina Rahayu
ASTONJADRO Vol. 13 No. 2 (2024): ASTONJADRO
Publisher : Universitas Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/astonjadro.v13i2.14907

Abstract

The durability of concrete can be determined from mixing coarse aggregate, fine aggregate, cement, water, with or without additives. The properties of concrete can be influenced by several things, such as the ratio of the mix, how to mix, how to transport, how to print, and how to compact. To analyze the compressive strength, flexural strength and split tensile strength of concrete submerged in sea water with variations in fineness modulus. The compressive strength results were 35.67Mpa, 31.63Mpa, 29.30Mpa respectively while the compressive strength of concrete with seawater immersion was 36.94Mpa, 36.52Mpa and 30.15Mpa. The split tensile strength results were 2.71Mpa, 2.65Mpa and 1.91MPa respectively, while the split tensile strength of concrete immersing in seawater with the same variations were 3.29MPa, 2.76MPa and 2.12MPa, respectively. The results of flexural strength were 4.22Mpa, 4.21Mpa, and 4.14MPa respectively, while the flexural strength of concrete with seawater immersion with the same variations were 4.27MPa, 4.22MPa, and 4.18MPa, respectively. The effect of fine grain modulus on compressive strength, split tensile strength and resulting flexural strength is very significant, the higher the fineness modulus of the coarse aggregate, the smaller the resulting value.
Identification of the Causes Waste Material in the Railway Bridge Construction Project Malaiholo, David; Prihartanto, Rusman; Puruhita, Hana Wardani
ASTONJADRO Vol. 13 No. 2 (2024): ASTONJADRO
Publisher : Universitas Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/astonjadro.v13i2.14908

Abstract

Material is one of the important components that has a close influence on the cost of a project, so with a large amount of construction material waste, it can be said that there is an overrun in the financing sector. In addition, the remaining construction materials can produce a high percentage of environmental pollution. Residual material or construction waste is something that is never separated from a project development. The existence of leftover materials can have a negative effect on the environment around the construction project. The remaining material can be interpreted as part of the material that has not been used resulting from the process of construction, repair, change or any item produced from the process, or an accident that cannot be directly used in that place without any further treatment. The railway bridge construction project certainly requires various types of materials, when viewed from the concept for the use of large materials, the more the remaining materials that exist or become construction waste. This research aims to determine the quantity of material waste generated from the construction of the railway bridge and analyze the factors that cause material waste in the railway bridge construction project. This research method uses observation and interview techniques and is supported by data obtained from the research location. The results of this study show that the largest percentage of waste cost during the railway bridge construction project came from K300 concrete material for retaining walls in the amount of 16.714% or Rp. 6,283,720.00. The source of the cause of the remaining material where the factors are generated from project actors, design, measurement/calculation, management, implementation and procurement/handling of materials.
Laboratory Tests of the Area of Head Joints and Bed Joints Increase the Diagonal Shear Stress of Brick Walls Marwahyudi, Marwahyudi; Rifai, Muhammad Dian; Ahwan, Ahwan
ASTONJADRO Vol. 13 No. 2 (2024): ASTONJADRO
Publisher : Universitas Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/astonjadro.v13i2.14938

Abstract

The strength of a brick wall is influenced by the failure of the mortar bond and the resistance of the bad joint and head joint when carrying the force. The wider the head joint and bad joint areas result in a wider bonded area which increases the diagonal shear strength of the wall. Residential walls that have increased ability to withstand diagonal shear forces will be more stable when subjected to earthquake lateral forces. This research formulates that the wider the connecting area of the body and head joint, the higher the diagonal shear strength. The test was carried out by making a square test object measuring 60 x 60 cm. then pressure is applied in the diagonal direction. At the time of setting up the test object is done carefully and thoroughly. The test object is positioned perpendicular to the diagonal direction. The test object is placed absolutely perpendicular and is given a load until it is completely damaged. Loading method by providing a force that increases regularly until the structure experiences a complete failure. The bonded area in each brick shape is measured and compared with the results of the diagonal shear strength. This value is analyzed to obtain the effect on the diagonal shear strength. The percentage effect of each brick shape is compared and the results are analyzed. The results of the analysis are to obtain justification whether the area of the bad joint and head joint affects the diagonal shear strength. The novelty of this research is to obtain several brick designs that increase the strength of the diagonal shear stress. Tests show that the greater the area of the head joint, the greater the value of the diagonal shear stress.
Geometric Evaluation of Highways and Railroads on Safety at Crossings (Case Study of JPL 136 and JPL 138 Madiun City) Nurhadi, Muhamad; Widi Astuti, Septiana; Dewi, Puspita
ASTONJADRO Vol. 13 No. 2 (2024): ASTONJADRO
Publisher : Universitas Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/astonjadro.v13i2.14947

Abstract

Railway and road transportation are land transportation that service users widely use because these modes play an important role in community activities, especially people on the island of Java. The train is a mass transportation with many advantages over other transportation, especially as a solution to the congestion problem in the country. Level crossing is a meeting between the railroad and the highway. Level crossings must meet the standard requirements set by the relevant agencies including geometric conditions, free space and wake space, and visibility so that level crossings are comfortable and safe for vehicles to pass through. The purpose of this study is to evaluate the geometric conditions, free space and shape as well as the visibility of level crossings. This study uses field observations and data from DAOP 7 Madiun to compare field conditions with requirements. The research was conducted at level crossings, namely JPL 136 and JPL 138 Kota Madiun.
Analysis of Mode Integration Facilities at Madiun Station Nopriyanto, Windi; Widi Astuti, Septiana; Dewi, Puspita
ASTONJADRO Vol. 13 No. 2 (2024): ASTONJADRO
Publisher : Universitas Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/astonjadro.v13i2.14948

Abstract

One of the problems that occur at Madiun Station is the need for modal integration. Modal integration can be interpreted as a complete integration of the types or forms (transport) used to move people and goods from one place (origin) to another (destination). Some problems related to modal integration at Madiun Station are not optimal pedestrian facilities, no clear drop zone point for public transport passengers, and more information instructions regarding connecting transportation. In this study, data collection methods were used by observing the existing conditions of the modal integration facilities in the Sriwijaya Earth Station area. Furthermore, a survey was conducted on LRT passengers at Madiun Station regarding the characteristics of LRT service users and the public's willingness to access modal integration facilities. This study uses the Modal Interaction Matrix and Trip Segment Analysis Method. The results of this study using the Modal Interaction Matrix analysis show that the modal integration facility in the Madiun Station area has an interaction level of -160 or can be categorized as a bad interaction. By providing a proposal for the location of the modal integration facility, it can be seen that the interaction value of the modal integration facility at the Sriwijaya Earth Station has increased to -80 or has a Good category. Furthermore, through calculations using the Trip Segment Analysis method, the greatest time value is for public transport users when they want to access the station or when they want to leave the station. The value of the time needed to access the station for public transport users is 15.3 minutes. And it takes 14.4 minutes for train service users who get off at Madiun Station and want to continue their journey using public transportation.
Risk Analysis of Waste Management Failure at Al-Hikmah Quran Islamic Boarding School in Bogor Using FMEA and AHP Methods Rizkiya, Ananda Nurul; Rimantho, Dino
ASTONJADRO Vol. 13 No. 2 (2024): ASTONJADRO
Publisher : Universitas Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/astonjadro.v13i2.15004

Abstract

The Bogor Al-Hikmah Qur'an Islamic Boarding School is a male-only Islamic boarding school with 160 active students, producing no less than 50 kg of waste per day. Waste management is still carried out traditionally, that is, collected and then burned. Waste management is an important part that needs attention at the Al-Hikmah Quran Islamic Boarding School, Bogor. Therefore, this final project research aims to analyze the factors that have the potential to pose a risk of failure in waste management at the Bogor Al-Hikmah Qur'an Islamic Boarding School, and provide the best alternative that can be used by the Bogor Al-Hikmah Qur'an Islamic Boarding School in managing rubbish. The data used in this study came from literature studies, interviews, and distributing questionnaires to the boarding school. In this study using the fishbone diagram method to identify risks, Failure Mode and Effect Analysis (FMEA) to determine the factors that can cause failure in waste management, and Analytical Hierarchy Process (AHP) to find the best alternative in waste management at the Qur'an Islamic Boarding School and Al-Hikmah Bogor. From the results of this study, it was obtained that the highest Risk Priority Number (RPN) value was 720 on the human factor with the sub factor that there were still many students who littered, and on the method factor with the sub factor there were no regulations for disposing of waste in its place, and alternative solutions for management waste at the Al-Hikmah Quran Islamic Boarding School in Bogor is to conduct training for boarding school residents with a weight of 0.38. The alternative strategy is one of the solutions to solve the problem of plastic waste from students' rooms with a weight of 0.51. With the training for boarding school residents, it is hoped that the plastic waste produced by the boarding school can be recycled so that it can be reused, and reduce the rate of disposal of plastic waste to landfills.
Analysis of Road Damage Levels Using the Surface Distress Index Method and Handling Cracked Roads Haldiana, Haldiana; Nanang Prayudyanto, Muhamad; Rulhendri, Rulhendri
ASTONJADRO Vol. 13 No. 2 (2024): ASTONJADRO
Publisher : Universitas Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/astonjadro.v13i2.15053

Abstract

Analysis of the Level of Road Damage Using the Surface Distress Index Method and Evaluation and Handling of Cracked Roads (Case Study: Jalan Ciherang Cutak-Jalan Suka Mulya, Ciomas District, Bogor Regency. The existence of roads is very necessary to support the rate of agricultural and other economic growth, considering the important benefits So the road construction and maintenance sector is a priority for research and development in planning, implementation and maintenance. The road sections experienced damage which includes several factors such as road sections that are frequently used, poor drainage channels. The aim of this research is to determine the type of damage, evaluate and handle damage to road sections, as well as obtain damage values on Jalan Ciherang Cutak-Jalan Suka Mulya, Ciomas District, Bogor Regency based on the parameters of the Surface Distress Index (SDI) method. The length of the road used in this research is ± 1000m which is divided into 10 segments with The length of each road is ± 100m. In this research the author used the Surface Distress Index (SDI) method and used data on damage dimensions including length, width and depth of damage. Based on the results obtained, there are 4 types of damage found on the Jalan Ciherang Cutak-Jalan Suka Mulya section, Ciomas District, Bogor Regency, namely: pavement edge defects, potholes, alligator cracks, longitudinal cracks and the results of the percentage of SDI values in the average damage. The average is 34, which states that the Jalan Ciherang Cutak-Jalan Suka Mulya section, Ciomas District, Bogor Regency is in good condition, and there is an evaluation and handling of SDI values on the Ciherang Cutak-Jalan Suka Mulya road, the road is in segments 1-4,8-10 with good condition. while 5 and 7 are in moderate condition, but in segment 7 there is a high damage area value, namely 12.2%, so that widespread cracks do not occur, routine and periodic maintenance is needed along the Ciherang Cutak Suka Mulya road so that the damage does not spread.
Optimizing Time Performance in Implementing Green Building Concepts on High-Rise Residential by using M-Pert Detty Kussumardianadewi, Bernadette; Eddy Husin, Albert; Septia Prawina, Riza
ASTONJADRO Vol. 13 No. 2 (2024): ASTONJADRO
Publisher : Universitas Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/astonjadro.v13i2.15059

Abstract

Climate change is a threat and crisis that is sweeping the world today, therefore the target towards Net Zero Emissions (NZE) by 2060 must be an obligation of all countries. The greenhouse effect, global warming, destruction of the ozone layer, destruction of forests, uncontrolled use of CFCs, and industrial disposal are factors that cause climate change. The consequences of climate change are dire, resulting in droughts, water scarcity, land fires, rising sea levels, flash floods, melting polar ice caps, storms, and biodiversity decline. Green buildings (GB) are important in saving energy, water, and other resources by meeting technical construction standards and applying green building principles with measurable performance. It is expected to reduce carbon emissions or greenhouse gases. From the results of research with the application of M-PERT, it is proven to be able to provide an accuracy of 98.93% implementation time in high-rise residential buildings

Page 34 of 51 | Total Record : 507

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