Articles

Access the latest knowledge in applied science, electrical engineering, computer science and information technology, education, and health.

Advanced Search
Filter Icon

Filters article

Years

FAQ Arrow
Single Year
Range Year
0
0

Source Title

FAQ Arrow

Authors

FAQ Arrow

31,377 Article Results

Adaptive notch filter: An alternative synchronizer for effective performance of active power filter under challenging grid conditions

10.11591/ijpeds.v17.i2.pp1221-1230
Yap Hoon , Kuew Wai Chew , Kenny Sau Kang Chu , Siti Zaliha Mohammad Noor
Harmonic distortion issues on modern power systems are becoming highly significant due to the increasing integration of renewable energy sources, electric vehicles, and smart technologies. These distortions, mainly caused by the operation of power electronics devices, potentially degrade overall system quality, increase losses, and shorten equipment lifespan if they are not properly mitigated. Shunt active power filters (SAPFs) are found to be most effective against current harmonics issues, but their performance strictly depends on accurate grid synchronization. In this paper, an alternative method developed based on the adaptive notch filter (ANF) concept is proposed for reliable grid synchronization under challenging conditions. The proposed ANF-based synchronizer is modelled in MATLAB/Simulink and benchmarked against the existing self-tuning filter (STF) method under four cases involving sinusoidal, distorted, noisy, and distortion-with-noise grid conditions. Simulation findings demonstrate that the proposed method enables the connected SAPF to effectively mitigate harmonics by providing low total harmonic distortions (2.71% to 2.82%) and minimal phase deviation (0.2° to 0.5°), while maintaining the accuracy of fundamental current between 94.48% to 97.21%. As a result, the overall power factor of the system is raised to near unity, confirming the ability of the proposed ANF-based method to serve as a better alternative for SAPF synchronization.
Volume: 17
Issue: 2
Page: 1221-1230
Publish at: 2026-06-01

Design simulation and analysis of an MPPT technique using ANNs integral backstepping and SMC for PV systems

10.11591/ijpeds.v17.i2.pp1288-1303
Naoufal Zhani , Hassane Mahmoudi
This paper introduces the design of an innovative hybrid MPPT method called artificial neural networks-integral backstepping sliding mode control (ANN-IBSMC). This approach combines artificial neural networks (ANNs), which output the maximum power point voltage using inputs such as irradiance and temperature, with a robust control strategy. The designed controller aims to track the reference voltage with high accuracy and responsiveness by modifying the pulse width modulation of the DC-DC converter in the photovoltaic system. The IBSMC integrates the advantages of two control methods: the stability and accuracy of integral backstepping, and the robustness and fast response of sliding mode control (SMC). This combination enables improved precision, high convergence speed, enhanced robustness, and strong stability, the latter being ensured by the Lyapunov function. To evaluate the performance of the proposed controller, a comparative study is performed against other hybrid control techniques, such as the ANN-backstepping controller, the ANN-integral sliding mode controller, and the ANN-backstepping sliding mode controller, using MATLAB/ Simulink. A sensitivity and robustness analysis was carried out.
Volume: 17
Issue: 2
Page: 1288-1303
Publish at: 2026-06-01

Numerical Analysis of the Comparison of Mathematical Models of Materials on the Performance of Link Coupling Beams in EBF Structures

10.11591/ijaas.v15.i2.pp861-871
Musbar Ibrahim
This study explores the failure phenomena of Eccentrically Braced Frame (EBF) structures under cyclic loading, focusing on the performance of Link Coupling Beams (LCB). The aim is to compare different modeling approaches to determine the most effective numerical analysis concept for EBF structures. The research divides test specimens into two models: a mathematical material model and a plasticity model, with three test specimens. The mathematical models employed are the Ramberg-Osgood (R-O) model and the Kaufmann cyclic model, while the plasticity models include the multi-linear kinematic hardening model and the multi-linear isotropic hardening model. LCB link specimens are designed according to AISC 341-22 standards for long links. Numerical analysis results indicate that different mathematical material models produce similar behaviors in terms of hysteretic curves, strength, and plastic rotation angle. However, notable differences arise between the plasticity models. The choice of plasticity model has a more significant impact than the choice of material mathematical model.
Volume: 15
Issue: 2
Page: 861-871
Publish at: 2026-06-01

Mobile device application design for ThingSpeak interface using flutter

10.11591/ijict.v15i2.pp850-860
Moehammad Sauqy Ihza Zuliandra , Tigor Hamonangan Nasution , Ainul Hizriadi
The rapid development of internet of things (IoT) is prompting many people to design applications, particularly for monitoring applications based on mobile apps. This includes research designs to monitor electrical parameters from PV and the development of health monitoring applications. Previous research required a separate application to scan each IoT device. In this research, a mobile app-based IoT monitoring system was built using flutter. With this, people no longer need to design separate mobile apps for various IoT devices. This application utilizes the flutter framework, while the cloud component uses ThingSpeak. These research results show that data from multiple IoT devices can be transferred to the user’s mobile app. This application enables the monitoring of various IoT devices through a single mobile app, thereby enhancing the efficiency of IoT device design and management.
Volume: 15
Issue: 2
Page: 850-860
Publish at: 2026-06-01

Validation of Si-HIPO mHealth application for hypertension-obesity education in Surakarta

10.11591/ijphs.v15i2.27018
Sunarsih Rahayu , Ros Endah Happy Patriyani
Hypertension and obesity represent significant global public health challenges requiring innovative educational interventions. The Si-hypertension and obesity information system (HIPO) application was developed as a context-specific digital health education medium targeting Indonesian community health center populations, distinguishing it from existing generic mHealth tools by integrating comorbid hypertension-obesity education within a culturally appropriate single platform. This study aimed to assess the content validity of the Si-HIPO application through expert and respondent validation. A quantitative descriptive cross-sectional design was employed at Sibela Community Health Center, Surakarta, Indonesia. Expert validation involved two assessors using Aiken's V coefficient methodology, while respondent validation included 66 participants with hypertension and overweight/obesity. Respondent characteristics revealed predominantly female participants (60.61%), aged > 40 years (39.39%), with stage 2 hypertension (51.52%) and obesity (59.09%). Respondent evaluation demonstrated 72.73% positive acceptance. Expert validation yielded high validity coefficients for nine of ten items (V = 0.802-0.833), with one item showing moderate validity (V = 0.667). The aggregated validity coefficient was 0.802, indicating high overall content validity. The Si-HIPO application demonstrates strong content validity and user acceptability as an educational medium for hypertension and obesity management. However, further effectiveness testing through experimental or quasi-experimental designs is warranted before implementation in clinical practice.
Volume: 15
Issue: 2
Page: 389-397
Publish at: 2026-06-01

Impact of an empathy-based mental health first aid intervention using the SUFA model on anxiety and depression among adolescents: a quasi-experimental study

10.11591/ijphs.v15i2.26994
Sulastri Sulastri , Siti Fatonah , Yuniastini Yuniastini , Giri Udani , Allan Harris
This study evaluated the effectiveness of an empathy-based mental health first aid (MHFA) intervention through structured SUFA mentoring by peer counselors in reducing symptoms of anxiety and depression in adolescents. The design used was a quasi-experimental, one-group pretest-posttest study conducted over two weeks in middle and high schools. A total of 100 students were trained as peer counselors, and each mentored one adolescent (a 1:1 ratio). Symptoms were measured before and after the intervention using the Mini MINDHEAR Youth Scale V.1. Analysis included descriptive statistics (mean pre–post scores and changes in symptom categories of "mild/none" vs. "moderate") and McNemar test (α = 0.05) to assess changes in categories. Respondents were predominantly female (67%), in late adolescence (58.18%), and high school students (55%). The mean anxiety score decreased from 4.92 to 3.50 (Δ = 1.42), while depression decreased from 5.05 to 3.21 (Δ = 1.84). The proportion of mild/none anxiety increased from 13 to 56, and moderate decreased from 87 to 44 (p = 0.003). A similar pattern occurred for depression: mild/none increased from 13 to 61, while moderate decreased (p = 0.001). SUFA-based peer counseling interventions significantly reduce symptoms of anxiety and depression in adolescents. Schools should integrate structured peer counselor training programs into mental health frameworks, establish systematic early detection protocols, and establish clear referral pathways to professional services within school-based support systems. The limitations of this study were no control group and short duration, which must be addressed in subsequent research.
Volume: 15
Issue: 2
Page: 337-345
Publish at: 2026-06-01

Effectiveness of hypnotherapy as complementary intervention in reducing post-cesarean pain: A PRISMA-based systematic review of literature released during the 2015-2024 period

10.11591/ijphs.v15i2.26893
Annes Rindy Permana , Widigdo Rekso Negoro , Sindu Sintara , Muhammad Rodli , Suryanto Suryanto , Reko Priyonggo
Cesarean section is a common surgical procedure often associated with moderate to severe postoperative pain. Hypnotherapy has been proposed as a complementary, non-pharmacological intervention; however, evidence specific to post-cesarean pain management remains limited. The purpose of this PRISMA-based systematic review was to evaluate hypnotherapy as an intervention for reducing postoperative pain associated with cesarean section. Literature searches were conducted in Google Scholar and PubMed for studies published between 2015 and 2024 using predefined inclusion and exclusion criteria. From 326 identified records, four studies met all eligibility criteria and were included in the qualitative synthesis. Despite heterogeneity in study design and intervention protocols, all included studies consistently reported reductions in postoperative pain intensity among participants receiving hypnotherapy compared with standard postoperative care, with pain outcomes primarily measured using validated scales such as the Numerical Rating Scale. These findings suggest that hypnotherapy may support conventional analgesic strategies as an adjunctive intervention during early postoperative recovery. Nevertheless, the scarcity of existing research and the presence of methodological limitations suggest the need for rigorously designed randomized controlled trials to provide more robust evidence.
Volume: 15
Issue: 2
Page: 474-483
Publish at: 2026-06-01

MLP-DT: a deep learning model for early prediction of diabetes and thyroid disorders

10.11591/ijict.v15i2.pp778-788
Aouatef Chaib , Ouahiba Djama , Sabar Messaoudi
In this paper we present an intelligent and automated system for controlling diabetes and thyroid disorders. This system is designed to self-diagnose autoim mune diseases as early as possible in order to treat them quickly and thus slow down or stop their progression and thus provide a tool for self-control of dis eases. Our system is based on deep neural networks (DNNs), it contains several layers and it is classified as multi-layer perceptron (MLP). The proposed model called MLP model for early prediction of diabetes and thyroid disorders (MLP DT)uses a set of biomedical variables, allowing the system to formulate person alized treatment recommendations. To improve diagnostic accuracy and facili tate early screening, the system also incorporates machine learning techniques. The optimization in MLP-DT is provided by the adam optimizer algorithm, it is always applied to adjust the weights of the three hidden layers and the output layer (Sigmoid or Softmax). Experimental results demonstrate that the proposed MLP-DT model achieves reliable predictive performance and supports effective early screening of diabetes and thyroid disorders. These findings highlight the potential of the proposed approach as an intelligent decision-support tool for personalized healthcare and preventive medicine.
Volume: 15
Issue: 2
Page: 778-788
Publish at: 2026-06-01

Comparative effects of desflurane and sevoflurane on recovery time in patients undergoing modified radical mastectomy: a cross-sectional study

10.11591/ijphs.v15i2.26903
Muhammad Rodli , Suryanto Suryanto , Reko Priyonggo , Sindu Sintara , Annes Rindy Permana , Widigdo Rekso Negoro
Fast and predictable recovery is essential in breast cancer surgery, yet comparative evidence on inhalation anesthetics within Indonesian clinical settings remains limited. This study compared the effectiveness of desflurane and sevoflurane on early recovery time after modified radical mastectomy. A cross-sectional design was applied to 76 ASA I-II female patients who received standardized induction, maintenance, and Aldrete-based recovery assessment. Recovery was categorized as fast (≤10 minutes) or delayed (>10 minutes). Statistical analysis used Chi-square testing, supported by effect size and risk ratio estimation. Desflurane demonstrated significantly faster recovery than sevoflurane (97.4% vs 78.9%, p = 0.014). The association showed a moderate effect size (Cramér’s V = 0.30), and patients receiving sevoflurane were substantially more likely to experience delayed recovery (RR = 8.3). These results align with recent studies highlighting desflurane’s lower blood-gas solubility and faster elimination profile. The homogeneous sample and standardized anesthetic protocol strengthen internal validity. However, the non-randomized design, purposive sampling, and absence of documented adverse events limit generalizability. Desflurane may offer practical benefits in improving post-anesthesia care unit (PACU) efficiency and surgical throughput in high-volume settings. Further multicenter randomized studies are recommended to confirm these findings and explore broader clinical implications.
Volume: 15
Issue: 2
Page: 518-524
Publish at: 2026-06-01

The effect of emotion card games on emotional intelligence among elementary school-aged children: a quasi-experimental study in Mataram, Indonesia

10.11591/ijphs.v15i2.27032
Moh. Arip , Sri Susantini , Martha Meti Kodi , Melati Inayati Albayani , Novi Enis Rosuliana
Emotional intelligence is a key skill influencing adaptation, communication, and personal growth in elementary school-aged children. Emotional card games offer a promising interactive approach to enhance children's emotional competencies. To analyze the effect of emotional card games on the emotional intelligence of elementary school-aged children. A quasi-experimental pretest-posttest control group design was conducted among 77 first-grade students at MI Mambaul Khair NW Bertais Mataram in 2025. The intervention group (n = 39) participated in three sessions of an emotional card game, while the control group (n = 38) received no intervention. Emotional intelligence was measured using a validated 24-item questionnaire. The intervention group demonstrated a significant increase in emotional intelligence scores from pre-test to post-test (p = 0.007), whereas the control group showed no significant change. Between-group comparison confirmed significantly higher post-test scores in the intervention group (p = 0.006). After adjusting for confounding variables and baseline scores, the intervention effect remained statistically significant (p < 0.001). Emotional card games effectively improve emotional intelligence among elementary school-aged children. These findings support the integration of game-based social-emotional learning strategies into elementary school curricula. School health practitioners and educators can utilize this low-cost, engaging intervention to promote children's emotional well-being and support holistic child health development.
Volume: 15
Issue: 2
Page: 398-407
Publish at: 2026-06-01

Ethnomedicinal plants traditionally used in treating measles in the Philippines: a review

10.11591/ijphs.v15i2.25845
Angel Mae Frias Luga , Cesar Guinanao Demayo
Measles, despite the continuous significant advancements in the field of science, still poses a major health threat worldwide. While vaccines have significantly reduced measles-related morbidity and mortality, access to alternative treatments remains critical for populations unable to receive immunization due to medical, cultural, or socioeconomic barriers. With that, looking into some readily available, cost-effective, and safe alternatives for the treatment of measles is necessary. Given the therapeutic potential of medicinal plants, the main objective of this study is to conduct an ethnobotanical review on the medicinal plants that have been traditionally used in the Philippines for measles treatment. In this review, findings reveal a wide array of plant species that have been traditionally used for measles treatment. A total of 45 medicinal plant species belonging to 25 families were found to have been used in the Philippines to traditionally treat measles. Moreover, data show that Poaceae has the highest number of plant species, which constitutes 11.11% of medicinal plant species in the Philippines, with therapeutic potential against measles. This consolidated data highlights potential low-cost alternatives to conventional therapies and underscores the need for further pharmacological validation of these remedies to enhance their integration into public health strategies.
Volume: 15
Issue: 2
Page: 593-604
Publish at: 2026-06-01

Assessing the effectiveness of a semi-annual monitoring model for data analysis and use in routine immunisation in Benin

10.11591/ijphs.v15i2.26936
Lamidhi Salami , Yolaine Glele Ahanhanzo Hessou , Jean Pierre de Lamalle , Alphonse Biaou , Moussiliou Noël Paraïso
Routine immunisation programmes generate large volumes of data, yet their effective analysis and use for decision-making remain limited at the operational level. For over three decades, Benin has institutionalized a semi-annual monitoring system to assess effectiveness, quality, and develop problem resolution plans (PRPs). This study evaluated its effectiveness in fostering data analysis and use within vaccination services. A descriptive cross-sectional study using mixed methods was conducted from January to June 2025 in eleven health centers across four departments. Data collected via direct observation, semi-structured interviews (n = 38), and document review underwent descriptive and qualitative analysis. Input availability and service accessibility remained optimal (100%). Variability persisted in utilisation, continuity, and quality, with recurrent over-coverage rates. During self-monitoring, technical tasks were frequently performed, whereas in-depth analysis and PRP development were limited (9.09%). Although 90.9% of centers had PRPs, their quality was mostly acceptable, with low innovation and weak follow-up mechanisms. Community participation was irregular. Nevertheless, 81.82% of managers perceived PRPs as contributing to improved vaccination performance. Semi-annual monitoring remains functional and relevant; however, strengthening analytical capacity, digital tools, follow-up mechanisms, and community engagement is essential to institutionalise a sustainable culture of data use for decision-making.
Volume: 15
Issue: 2
Page: 583-592
Publish at: 2026-06-01

Hemodynamic stabilization in cesarean section patients administered spinal anesthesia: a quasi-experimental study comparing ephedrine and phenylephrine

10.11591/ijphs.v15i2.26957
Sindu Sintara , Annes Rindy Permana , Widigdo Rekso Negoro , Suryanto Suryanto , Reko Priyonggo , Muhammad Rodli
This quasi-experimental research aimed to compare the effects observed following the administration of ephedrine 10 mg and phenylephrine 50 mg administered as therapeutic bolus doses for the management of intraoperative hypotension due to spinal anesthesia in cesarean section. The study involved 60 parturients who developed intraoperative hypotension during spinal anesthesia, who were divided into two groups treated with either phenylephrine or ephedrine. Maternal blood pressure, including systolic and diastolic values, was assessed pre- and post- vasopressor administration and analyzed using descriptive statistics, normality testing, and independent-samples t-tests. Both vasopressors were associated with increased maternal blood pressure following intervention, with no significant differences observed at baseline. However, between-group comparisons revealed statistically significant differences in post-intervention systolic and diastolic blood pressure (p < 0.05), indicating distinct hemodynamic response profiles. These findings demonstrate the effectiveness of both ephedrine and phenylephrine in treating hypotension associated with spinal anesthesia; vasopressor selection influences maternal blood pressure outcomes. From a practical perspective, this study provides clinically relevant evidence to inform anesthetic decision-making in maternal healthcare services, particularly in settings where therapeutic bolus administration is routinely utilized for the management of hypotension associated with spinal anesthesia.
Volume: 15
Issue: 2
Page: 466-473
Publish at: 2026-06-01

Effectiveness of telerehabilitation versus home exercise in knee osteoarthritis: a quasi-experimental study in Indonesia

10.11591/ijphs.v15i2.26860
Grenda Aprilyawan , Inayah Ageng Izza , Lanendo Raufbar Ramdan Suwanda , Made Mahaguna Putra
In Indonesia, osteoarthritis affects about 7.30% of the population, with its occurrence rising markedly as people age. The condition is found in 11.08% of individuals aged 45-54 years and increases to 18.85% among those older than 75 years. A large proportion of individuals with knee osteoarthritis (KOA) lead inactive lifestyles and often lack adequate encouragement to engage in physical activity. Exercise is known to be beneficial, as it helps regulate cytokine activity in synovial fluid while reducing inflammation and oxidative stress. This research aimed to evaluate the comparative effectiveness of telerehabilitation and home-based exercise interventions for individuals with KOA. A quasi-experimental approach with pre- and post-intervention assessments and a control group was applied. The study involved 120 participants diagnosed with osteoarthritis, who were assigned to either an intervention group receiving an 8-week telerehabilitation program or a control group performing standard exercises independently. Outcome measures: 30-CST, pain intensity, physical activity levels assessed using IPAQ, fear of movement measured by the Tampa Kinesiophobia Scale, and FSS. These variables were assessed before and after the intervention. Additionally, adherence to exercise (EARS) and patient satisfaction were recorded. Statistical analysis was conducted using the Mann-Whitney test and the Wilcoxon signed-rank test.
Volume: 15
Issue: 2
Page: 330-336
Publish at: 2026-06-01

Effectiveness of a breastfeeding self-efficacy intervention on BSES-SF scores and exclusive breastfeeding: a quasi-experimental study in postpartum mothers

10.11591/ijphs.v15i2.27067
Arifarahmi Arifarahmi , Asrial Asrial , Muhammad Rusdi , Solha Elrifda
Despite Indonesia's national breastfeeding promotion efforts, exclusive breastfeeding rates remain below the 80% target, with limited evidence on structured breastfeeding self-efficacy (BSE) interventions in low-resource Indonesian settings. To evaluate the effectiveness of a BSE intervention on BSES-SF scores and exclusive breastfeeding continuation during the first six months postpartum. A quasi-experimental pretest-posttest design with a control group was conducted on 104 postpartum mothers (52 intervention, 52 control). Measurements were conducted longitudinally at baseline, weeks 2, 6, 12, and 24 postpartum. Data were analyzed using independent t-test, Chi-square, Cox proportional hazard regression, and linear mixed model (LMM). The intervention group's BSES-SF score increased significantly from 42.35 to 59.73 compared to the control group (41.88 to 48.06, p < 0.001). Exclusive breastfeeding at 24 weeks was significantly higher in the intervention group (71.2% vs. 40.4%, RR = 1.76, p = 0.001). Cox analysis identified the intervention as the strongest protective factor (HR = 0.41, p = 0.001), followed by husband's support (HR = 0.54, p = 0.039), while employment was a risk factor (HR = 1.72, p = 0.034). The non-randomized design and single-site setting may limit generalizability. The BSE intervention effectively increased self-efficacy scores and exclusive breastfeeding rates, suggesting integration into routine postpartum care as a scalable public health strategy.
Volume: 15
Issue: 2
Page: 449-457
Publish at: 2026-06-01
1 2 3
...
2091 2092
Show 74 of 2092

Discover Our Library

Embark on a journey through our expansive collection of articles and let curiosity lead your path to innovation.

Explore Now
Library 3D Ilustration