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  • Open Access

    ARTICLE

    Specific Internet-Use Disorders among Indonesian College Students: Psychometric Evaluation of the Assessment of Criteria for Specific Internet-Use Disorders (ACSID-11)

    Siti Rahayu Nadhiroh1,*, Ira Nurmala2, Iqbal Pramukti3, Kamolthip Ruckwongpatr4, Laila Wahyuning Tyas2, Afina Puspita Zari2, Warda Eka Islamiah1, Yan-Li Siaw5, Marc N. Potenza6,7,8,9,10,11, Chung-Ying Lin12,13,14,15,*

    International Journal of Mental Health Promotion, Vol.27, No.12, pp. 1847-1865, 2025, DOI:10.32604/ijmhp.2025.072115 - 31 December 2025

    Abstract Objectives: Problematic use of the internet (PUI) has been increasingly associated with various mental health issues, highlighting the need for accurate assessment tools. The Assessment of Criteria for Specific Internet-use Disorder (ACSID-11) is a validated psychometric instrument designed to measure distinct forms of PUI across multiple online activities. However, its applicability and validity have not yet been established within the Indonesian context. Therefore, this study aimed to translate and validate the ACSID-11 for use among Indonesian populations. Methods: The translation procedure of the ACSID-11 involved forward translation, back translation, and expert panel discussions. This research involved… More >

  • Open Access

    ARTICLE

    Synthesis and Application of Activated Charcoal from Indonesian Sugar Palm Bunches (Arenga longipes) as a Potential Absorbent for Heavy Metals

    Luthfi Hakim1,*, Yunida Syafriani Lubis2, Apri Heri Iswanto1, Harisyah Manurung1, Jayusman2, Widya Fatriasari3, Petar Antov4, Tomasz Rogoziński5, Lee Seng Hua6, Nur Izyan Wan Azelee7

    Journal of Renewable Materials, Vol.13, No.12, pp. 2355-2373, 2025, DOI:10.32604/jrm.2025.02025-0078 - 23 December 2025

    Abstract Activated charcoals were synthesized from sugar palm bunches (SPB) of the native tree of Arenga longipes in Indonesia. The synthesized activated charcoal (AC) was characterized, and utilized as an absorbent for heavy metals (lead/Pb and copper/Cu) through thermal activation. The synthesis of AC was accomplished through furnace activation at temperatures of 500°C, 600°C, 700°C, and 800°C. Acid chlorides were blended with the SPB-AC samples at 5% impregnation level and subsequently subjected to washing for activation, resulting in the elimination of volatile substances and ash content, which facilitates the development of a porous structure in the activated… More >

  • Open Access

    ABSTRACT

    The 5th Asian Associations for Pediatric and Congenital Heart Surgery Annual Meeting, Indonesia (AAPCHS 2025)

    Congenital Heart Disease, Vol.20, Suppl.1, pp. 1-49, 2025

    Abstract This article has no abstract. More >

  • Open Access

    ARTICLE

    Seabed Classification from Multi-Frequency Multibeam Data: A Study from Selorejo, Malang, Indonesia

    Qaisara Yusriena Yusaini1, Muhammad Abdul Hakim Muhamad1,*, Raiz Razali1,*, Rozaimi Che Hasan2, Mohd Shahmy Mohd Said1, Mohd Zainee Mohd Zainal1,2, Ikhsan Nuradi3

    Revue Internationale de Géomatique, Vol.34, pp. 535-552, 2025, DOI:10.32604/rig.2025.065284 - 06 August 2025

    Abstract Sediment mapping is a crucial component of environmental science, particularly in the marine environment, where the analysis of seabed sediments is essential for various purposes, including marine resource management, habitat preservation, and infrastructure development. Sediment refers to the solid particles that are transported and deposited in different areas. Multibeam echosounders have revolutionized the field of seabed sediment mapping by providing unparalleled resolution and accuracy in seafloor surveys. This study aimed to produce sediment maps by implementing multi-frequency, e.g., 200, 400, 550, and 700 kHz multibeam data using a machine learning algorithm, e.g., Support Vector Machine… More >

  • Open Access

    ARTICLE

    Charcoal Briquette Manufactured from Indonesian Sugar Palm Bunches (Arenga longipes Mogea) as Biomass-Based New Renewable Energy

    Luthfi Hakim1,*, Apri Heri Iswanto1,*, Yunida Syafriani Lubis2, Adam Jagwani Wirawan1, Ridwanti Batubara1, Nam Hum Kim3, Petar Antov4, Tomasz Rogoziński5, Lee Seng Hua6, Lum Wei Chen7, Rangabhashiyam Selvasembian8, Jayusman2, Jajang Sutiawan9

    Journal of Renewable Materials, Vol.13, No.3, pp. 637-650, 2025, DOI:10.32604/jrm.2025.056365 - 20 March 2025

    Abstract The utilisation of sugar palm bunches-charcoal briquettes (SPB-CB) represents a significant advancement in biomass energy. This study aimed to analyse the properties of charcoal briquettes produced from SPB (Arenga longipes). The experiment involved categorising the dimensions of charcoal powder into three specific particle sizes: 20–40 mesh, 40–60 mesh, and particles that could pass through a 60-mesh screen. The charcoal powder will be combined with tapioca as a binding agent at three specific concentrations: 11%, 13%, and 15%. The research findings indicate that the samples underwent 60 mesh passes achieved the maximum briquette density, with an average… More >

  • Open Access

    ARTICLE

    Spatial Assessment of Wastewater Requirements for the New Capital City of Indonesia

    Walter Timo de Vries*, Cristina Astudillo, Achmad Ghozali

    Revue Internationale de Géomatique, Vol.34, pp. 125-149, 2025, DOI:10.32604/rig.2025.057970 - 11 March 2025

    Abstract The development of Indonesia’s New Capital City (Ibu Kota Negara (IKN)) does not only offer opportunities but also faces uncertainties. One of these concerns is wastewater management, in terms of volume, location, and treatment facilities. To evaluate how the city might be able to manage this, this study starts with a theoretical evaluation of which wastewater management principles are crucial. Then the empirical study evaluates where and how the current infrastructure of the IKN could manage the wastewater and assesses—based on spatial scenarios—if the current wastewater management plans for the IKN are adequate. A Geographic… More >

  • Open Access

    ARTICLE

    Critical Concentration of Zinc for Increasing Production and Quality of Mangosteen Fruit in West Sumatera, Indonesia

    Martias1, Dewi Fatria2, Adha Fatmah Siregar2, Raden Heru Praptana3,*, Antonius Kasno3, Muhammad Prama Yufdy4, Riska4, Ni Luh Putu Indriyani4, Affandi4, Tri Budiyanti4, Sri Hadiati4, Ellina Mansyah4, Irwan Muas4, Jumjunidang4, Mizu Istianto4, Djoko Mulyono4, Intan Gilang Cempaka4, Triyani Dewi4, Agus Supriyo3, Bambang Nuryanto3

    Phyton-International Journal of Experimental Botany, Vol.93, No.11, pp. 2767-2786, 2024, DOI:10.32604/phyton.2024.055686 - 30 November 2024

    Abstract West Sumatera is one of the largest mangosteen production centers in Indonesia. After the 2019 harvest season, there were variations in fruit production and quality which indicated symptoms of zinc (Zn) deficiency. This study evaluates the status of Zn for increasing the production and quality of mangosteen fruit Ratu Kamang cv. The study was conducting using the observation method in Lima Puluh Kota, West Sumatera from January to December 2020. This study used ten mangosteen trees aged 23 years in three locations selected purposively. Parameters observed included soil properties, leaf nutrients, number of fruits; fruit,… More >

  • Open Access

    ARTICLE

    An Improved Transfer-Learning for Image-Based Species Classification of Protected Indonesians Birds

    Chao-Lung Yang1, Yulius Harjoseputro2,3, Yu-Chen Hu4, Yung-Yao Chen2,*

    CMC-Computers, Materials & Continua, Vol.73, No.3, pp. 4577-4593, 2022, DOI:10.32604/cmc.2022.031305 - 28 July 2022

    Abstract This research proposed an improved transfer-learning bird classification framework to achieve a more precise classification of Protected Indonesia Birds (PIB) which have been identified as the endangered bird species. The framework takes advantage of using the proposed sequence of Batch Normalization Dropout Fully-Connected (BNDFC) layers to enhance the baseline model of transfer learning. The main contribution of this work is the proposed sequence of BNDFC that can be applied to any Convolutional Neural Network (CNN) based model to improve the classification accuracy, especially for image-based species classification problems. The experiment results show that the proposed More >

  • Open Access

    ARTICLE

    Mental Health Disorders of the Indonesian People in the Early Stages of the COVID-19 Pandemic: Who is Vulnerable to Experiencing it?

    Rofingatul Mubasyiroh1,*, Indri Yunita Suryaputri1, Sri Idaiani2, Lely Indrawati1, Tri Wurisastuti1, Siti Isfandari1, Nikson Sitorus1, Enung Nurhotimah3, Felly Philipus Senewe1

    International Journal of Mental Health Promotion, Vol.24, No.5, pp. 725-737, 2022, DOI:10.32604/ijmhp.2022.021452 - 27 July 2022

    Abstract The extraordinary situation related to COVID-19 makes people worry about their health, family health, work, finances, and other daily activities. This condition can lead to social unrest, which has consequences for mental health problems. This study aims to determine the mental health consequences at the beginning of the COVID-19 pandemic in Indonesia. This is a cross-sectional study involving a target population aged 18 years and over who had access to electronic communication devices. An online questionnaire was randomly distributed and snowballed throughout 34 provinces in Indonesia. The study was conducted from 2 to 4 May… More >

  • Open Access

    ARTICLE

    SutteARIMA: A Novel Method for Forecasting the Infant Mortality Rate in Indonesia

    Ansari Saleh Ahmar1,2,*, Eva Boj del Val3, M. A. El Safty4, Samirah AlZahrani4, Hamed El-Khawaga5,6

    CMC-Computers, Materials & Continua, Vol.70, No.3, pp. 6007-6022, 2022, DOI:10.32604/cmc.2022.021382 - 11 October 2021

    Abstract This study focuses on the novel forecasting method (SutteARIMA) and its application in predicting Infant Mortality Rate data in Indonesia. It undertakes a comparison of the most popular and widely used four forecasting methods: ARIMA, Neural Networks Time Series (NNAR), Holt-Winters, and SutteARIMA. The data used were obtained from the website of the World Bank. The data consisted of the annual infant mortality rate (per 1000 live births) from 1991 to 2019. To determine a suitable and best method for predicting Infant Mortality rate, the forecasting results of these four methods were compared based on More >

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