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Corrigendum to “Behavioral aspects of safety culture: Identification of critical safety-related behaviors of motorcyclists in Indonesia's urban areas via the application of behavioral-based safety programs” [IATSS Research journal 46 (October 2022) 353–369]

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IATSS Research 2022年第4期46卷 623-623页

作者： Andrijanto Makoto Itoh Felix Sandro Sianipar Risk Engineering Department Graduate School of Systems and Information Engineering University of Tsukuba Ibaraki 305-8573 Japan Industrial Engineering Program Study Faculty of Engineering Universitas Kristen Maranatha Bandung 40164 Indonesia Faculty of Engineering Information and Systems University of Tsukuba Ibaraki 305-8573 Japan

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Tsunami evacution building model (TEBM) in Teluk Palu (Palu Bay) area

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IOP Conference Series: Materials Science and engineering 2022年第1期1212卷

作者： M Bakri R Awalia S Mulyati F Zubaidi M Rusydi A A Kasim R Prawita Department of Architecture Faculty of Engineering Tadulako University PaluIndonesia Department of Physics Faculty of Mathematics and Natural Sciences Tadulako University Palu Indonesia Department of Informatics Faculty of Engineering Tadulako University Palu Indonesia Study Program of Architecture Faculty of Engineering Tadulako University Palu Indonesia

The research was conducted in the coastal area of Palu Bay, Lere Village. Data were collected using observation, interviews, and literature study techniques. The data were analyzed using qualitative descriptive methods and focused on the concept of the design of the tsunami evacuation building on the coast of Palu Bay. Data analysis was carried out to obtain an overview of the problems that occurred at the planning location which was analyzed with the concept of architectural design by considering the existing conditions of the site and the surrounding environment, as well as utilizing the potential of the site so that it has the potential for building functions. The conclusion obtained is based on the results of data analysis, it is necessary to have a building that can function as an evacuation container for the community when a disaster occurs in the coastal area of Palu Bay, thereby reducing the number of casualties. The benefit of this research is that it is a solution for local people to save themselves when the tsunami disaster.

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The optimization of ultrasonic-assisted extraction of antioxidant compounds from butterfly pea flower (Clitoria ternatea L.) by using response surface methodology

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IOP Conference Series: Earth and Environmental Science 2021年第1期743卷

作者： N Izza D Tristantini Bioprocess Engineering Study Program Faculty of Agricultural Technology Universitas Brawijaya Department of Chemical Engineering Faculty of Engineering Universitas Indonesia

Butterfly pea flower (Clitoria ternatea L) contains many phytochemical compounds that are beneficial to human health, one of which is incorporated in the group of phenolic compounds. Generally, the extraction process of an organic compound requires heat and takes a relatively long time. Therefore, the application of the ultrasonic method for the extraction of butterfly pea flower is studied. This study aims to obtain the best-operating conditions in the ultrasonic-assisted extraction of the phenolic compound of the butterfly pea flower. The optimization of operating conditions during the extraction process was performed by using Response Surface Methodology (RSM) with the application of Design Expert 10 software. The results of the optimum operating conditions are 62,063 ml/g of solvent and flower ratio, 60% ultrasonic power output, and 15 minutes of extraction time. These operating conditions result in 55.834 ml of extract, 0.874 mg/ml of total phenolic content (TPC), and 10.42 mg/l of total anthocyanins (TA).

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Security measures and intrusion detection systems for preventing and mitigating SSL renegotiation denial of service attacks

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AIP Conference Proceedings 2024年第1期3135卷

作者： Amalia Nurain Teddy Mantoro Rudy A. G. Gultom Richardus E. Indrajit Cyber Defense Engineering Study Program Faculty of Defense Science and Technology The Republic of Indonesia Defense University Bogor Indonesia Media-Tech Lab Departement of Computer Science Sampoerna University Jakarta Indonesia Pradita University Jakarta Indonesia

Inundating a system, network, or application with traffic is the goal of Denial of Service (DoS) attacks, a disruptive form of attack. SSL DoS attacks, particularly those involving renegotiation, are of particular concern. In order to address these types of attacks, the study proposes several security measures, including rate restriction, session caching, SSL acceleration, and integrating Intrusion Detection Systems (IDS) with a systematic technique method to reduce the risks associated with SSL renegotiation DoS attacks. This study investigates the security measures for preventing and mitigating SSL DoS attacks, with a focus on renegotiation attacks. It offers advice and insights for protecting systems to SSL server administrators and network security professionals by doing rate restriction, session caching, and SSL acceleration to avoid SSL DoS attacks.

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Prediction of electricity load growth of tangerang city using SIMPLE-E 2

Prediction of electricity load growth of tangerang city usin...

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2nd IEEE International Conference on Innovative Research and Development, ICIRD 2019

作者： Putra, Andi Aulia Nayusrizal, N. Untari, Indira Wibisono, Gunawan Hudaya, Chairul Department of Electrical Engineering Faculty of Engineering Universitas Indonesia Depok16424 Indonesia Energy System Engineering Master Study Program Faculty of Engineering Universitas Indonesia Depok16424 Indonesia Trunojoyo Block M-I No.135 Jakarta12160 Indonesia

ISBN: (纸本)9781728128252

The electricity load growth should be planned appropriately to meet energy demand in a certain area. Electricity consumption growth is generally proportional with the economic and population growth. Using historical data on Gross Domestic Regional Product (GDRP) and population growth, the electricity load growth in the near future can be statistically predicted. The relationship between economic and population growth trend and total customers as well as the demands of contract electricity energy growth trend could be connected by the linear regression method to predict electricity energy consumptions. Through a Simple Econometric Simulation System (SIMPLE-E) program run in Microsoft Excel application, linear regression trend can be calculated. The purpose of study is to predict the growth of electricity consumption in Tangerang City-Indonesia, for the next ten consecutive years (2019-2028). Customer data that will be analyzed consist of five segments, which are Residential (R), Commercial (B), Industry (I), Public (P), and Social (S). Those can be combined with Gross Regional Domestic Product and human population using Multiples Linear Regression in SIMPLE-E. The correlation between dependent variables (total customers and contract of power) and independent variables (population and GRDP) will be computed in SIMPLE-E through rate value of correlation R, Adjusted R, and Durbin Watson test. The Actual trend data of total customer, contract power from 2012 to 2018, is compared to model equation from linear regression. The calculation of error use Root Mean Square Percentage Error and Mean Percentage Error, shows that the total error is less than 5%, meaning the simulation is scientifically accepted. This study shows that the average growth of electricity consumption in Tangerang city from 2019 to 2028 is 5.63%. It means that every 1% growth of economy in Tangerang will increase electricity load consumption for 0.94%. © 2019 IEEE.

关键词： Errors

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A simple approach for curcumin extraction from turmeric roots

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AIP Conference Proceedings 2022年第1期2537卷 040016页

作者： Siti Fauziyah Rahman Adella Josephin Ridha Alviny Syakirah Grace Priscilla Nadia Wulandari Nurul Intan Yudan Whulanza Biomedical Engineering Study Program Department of Electrical Engineering Faculty of Engineering Universitas Indonesia Kampus UI Depok West Java 16424 Indonesia Research Center for Biomedical Engineering Faculty of Engineering Universitas Indonesia Kampus UI Depok West Java 16424 Indonesia Department of Mechanical Engineering Faculty of Engineering Universitas Indonesia Kampus UI Depok West Java 16424 Indonesia

Turmeric, particularly its most active ingredient, curcumin, has a long list of scientifically documented health advantages, including the ability to boost heart health and protect against a variety of diseases. Curcumin is one of the most important active components in turmeric, with a wide range of bioactivity and medicinal uses. Preparing samples from biological components is a time-consuming and difficult operation. This study aims to understand the process of extracting curcumin from turmeric and to analyze the appropriate solvent for curcumin extraction. The method used is Soxhlet extraction with acetone and ethanol as solvents. The analysis of curcumin content was carried out using a UV-Vis spectrophotometer. The results showed that the curcumin extracted with acetone solvent had a higher concentration than the extraction with ethanol. Therefore, extracting curcumin from turmeric using the Soxhlet method, acetone is a superior solvent than ethanol.

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A Cluster-Based Method for Improving Water Depth Estimation from Satellite Derived Bathymetry

A Cluster-Based Method for Improving Water Depth Estimation ...

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2020 International Conference on Data Science and Its Applications, ICoDSA 2020

作者： Meliala, Litany Juliansah, Tabah Adytia, Didit Sidiq, Teguh Purnama Windupranata, Wiwin Poerbandono Institut Teknologi Bandung Geodesy and Geomatics Engineering Study Program Bandung Indonesia Telkom University School of Computing Bandung Indonesia Institut Teknologi Bandung Geodesy Research Group Faculty of Earth Sciences and Technology Bandung Indonesia Institut Teknologi Bandung Hydrography Research Group Faculty of Earth Sciences and Technology Bandung Indonesia

ISBN: (纸本)9781728182353

In this presented paper, an effort to improve the accuracy of the bathymetric model derived from optical satellite imagery is discussed. According to the previous study, the accuracy approximately measures in 2 m for depth up to 10 m by means of the Global Bathymetric Inversion Methods. Therefore, the improvement is done based on the so-called Cluster-Based Method applied to the analytical and log-ratio methods. The Cluster-Based Method partitions the working area on the by classifying the errors between the known depths and the predicted ones. The data for the known and predicted depths are acquired from the in-situ survey and the Sentinel-2 imagery. Improvement by one-third to the accuracy of the resulting bathymetry is obtained. © 2020 IEEE.

关键词： Bathymetry

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Novel insights into curcumin adsorption: Kinetics and mechanisms of decolorization using Pondoh snake fruit seed biochar

Next Research

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Next Research 2025年第2期2卷

作者： Wilna Iznilillah Mohamad Ali Fulazzaky Arti Hastuti Asep Bayu Dani Nandiyanto Meli Fiandini Khalida Muda Faculty of Halal Food Science Universitas Djuanda Jalan Tol Ciawi No 1 Ciawi Bogor 16720 Indonesia Study Program of Environmental Science Faculty of Engineering and Science Universitas Ibn Khaldun Bogor Jalan Sholeh Iskandar Kedungbadak Bogor 16162 Indonesia Faculty of Mathematics and Natural Science Education Universitas Pendidikan Indonesia Jalan Dr Setiabudhi No 229 Bandung 40154 Indonesia Faculty of Civil Engineering Universiti Teknologi Malaysia 81310 UTM Skudai Johor Bahru Malaysia

Utilizing natural waste materials to decolorize synthetic and natural dyes offers a promising solution for mitigating environmental pollution. The adsorption isotherms and decolorization kinetics of curcumin onto Pondoh snake fruit seed (PSFS) biochar were predicted using ten isotherm models and the Generalized Fulazzaky (GF) equations, respectively, providing insights into the behavioral characteristics of the adsorption process. Simulations using the Harkin-Jura model demonstrated a good fit, with R ² values exceeding 0.6909 across PSFS biochar granular sizes of 13.65, 25.49, and 65.13 μm, indicating capillary condensation and multilayer adsorption, which validates the GF equations’ applicability. Applying the GF equations to adsorption kinetics simulations showed that declining external mass transfer (EMT) rates were offset by increasing internal mass transfer (IMT) rates. The increase in IMT rates ([ k L a ] d < 0.0 min −1 ) was less pronounced than the decrease in EMT rates ([ k L a ] f > 0.0 min −1 ), suggesting IMT governs curcumin adsorption’s rate-limiting step. PSFS biochar with an average granular size of 25.49 μm proved most effective for decolorizing 100 mg L −1 curcumin, exhibiting a global mass transfer rate range of 0.0020 to 0.0079 min −1 . Utilizing PSFS biochar for curcumin removal contributes to sustainable environmental remediation by advancing green technologies and informing dye effluent management strategies.

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Renewable pro-environmental and energy design of environmentally friendly behavior in Central Java

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IOP Conference Series: Materials Science and engineering 2021年第5期1098卷

作者： H Hamiyati N Nadiroh A Neolaka Family Welfare Education Study Program Faculty of Engineering Universitas Negeri Jakarta Jakarta Indonesia Civic education Study Program Faculty of Social Science Universitas Negeri Jakarta Jakarta Indonesia Civil Engineering Study Program Faculty of Engineering Universitas Negeri Jakarta Jakarta Indonesia

Energy in Indonesia is increasing rapidly every year in line with economic involvement, and human growth that is getting more and more energy is not fulfilled every year. Indonesia is among the most energy users because of its population; this is what drives the government to accelerate the use of renewable energy such as solar. This is related to its use, which can help many people who live in cities and remote areas such as; Electricity in households, public facilities, offices, electricity is said to be the most environmentally friendly. This research was conducted in Central Java by using descriptive qualitative methods and using research and development (R&D) methods. The technique used in this study is a qualitative expressive analysis technique. The resultant solution is to be able to meet the increasing electricity needs of the community, the use of renewable energy in the city that does not hurt the environment. This research produces renewable energy that can be used as a solution to solving the electrical energy crisis at an affordable cost and can increase the independence of the community so that it does not depend on government electricity supply and improve environmentally-friendly behavior.

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Sweat sensing in wearable sensor: A review of the future non-invasive technology for real-time health monitoring system

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AIP Conference Proceedings 2022年第1期2537卷

作者： Elly Septia Yulianti Nurul Intan Siti Fauziyah Rahman Basari 1Biomedical Engineering Study Program Department of Electrical Engineering Faculty of Engineering Universitas Indonesia Kampus UI Depok West Java 16424 Indonesia 2Research Center for Biomedical Engineering Faculty of Engineering Universitas Indonesia Kampus UI Depok West Java 16424 Indonesia

Wearable sensors are devices used in the diagnostic process for real-time health monitoring systems. Types of sensors are generally based on physical sensors and chemical sensors. However, the types of wearable sensors that are largely commercialized are limited to physical sensors. Some diagnostic processes generally use the blood collecting method to determine a patient’s condition. However, this method can cause adverse effects such as infection, pain, and bruising for some patients. Chemical-based wearable sensors are capable of detecting metabolic conditions in the body and can be an alternative to the existing method. Based on an approach using alternative analytes, sweat is the most frequently used because it is highly accessible and proceeds good parameters compared to the blood. Several studies related to wearable sensors using sweat have been done to increase convenience during the sampling process. Electrochemical, biosensor, and hybrid with several sampling methods, including microfluidic system, absorbent material, superhydrophobic-super hydrophilic surface, and iontophoresis, can be used for wearable sensor analysis method. Over the past decade, the characteristics of wearable sensors (i.e., selectivity, sensitivity, stability, and response time), textile materials, and biofuel cell technology for self-powered sensor development have also increased. From these classifications, it can be concluded that the method which is highly feasible to be developed is electrochemical wearable sensors that combine microfluidic and iontophoresis systems. The system is also expected to have stretchable material and is equipped with an integrated biofuel cell system that has the potential to be developed in our upcoming research topic.

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