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

28,296 Article Results

The road feeling control system on the steer by wire system uses fuzzy logic control based on swarm optimization

10.11591/ijpeds.v16.i3.pp1496-1504
Fachrudin Hunaini , Gigih Priyandoko , Gatot Subiyakto , Purbo Suwandono
This paper presents an optimal control system for enhancing road feel in a steer-by-wire (SbW) system using fuzzy logic control (FLC) optimized with modified quantum particle swarm optimization (MQPSO). The objective is to improve the driver experience by providing realistic torque feedback, thereby replicating the steering sensations typically generated by road conditions. This feedback is essential for conveying information about vehicle dynamics and road surface variations through opposing torque applied to the steering interface. An artificial intelligence-based control system utilizing FLC was developed to manage the road feel feedback within the SbW system. The inputs to the FLC include steering angle, vehicle speed, and steering ratio, as well as key physical factors such as inertia and friction, all of which influence the generation of steering torque. The FLC parameters were optimized using MQPSO to achieve a more accurate and responsive road feel torque output. A Simulink model was constructed to simulate the proposed system. The simulation results demonstrate that the optimized FLC significantly improves the performance of the steering motor torque feedback mechanism. This study contributes to the advancement of steer-by-wire technology by proposing an optimal torque control framework and highlighting the effectiveness of integrating FLC with MQPSO in enhancing road feel dynamics.
Volume: 16
Issue: 3
Page: 1496-1504
Publish at: 2025-09-01

Direct torque control of induction motor using a novel sliding mode control

10.11591/ijpeds.v16.i3.pp1586-1597
Ngoc Thuy Pham , Duc Thuan Le , Phu Diep Nguyen
Direct torque control (DTC) for induction motor (IM) drive systems is recognized as a powerful control method known for its fast response and simple structure. However, this control method often suffers from several limitations, such as significant torque and current ripple, and sensitivity to variations in motor parameters. To address these issues, this paper proposes a novel sliding mode control strategy for the outer speed loop to improve the quality of DTC-based IM drive systems. Unlike previous approaches, we propose a novel adaptive parameter higher-order sliding mode (HOSM) controller for IM speed control. This approach enhances the drive system's performance by reducing torque ripple (a common issue in DTC), improving dynamic response, eliminating overshoot during transients, and increasing overall system stability. To ensure system stability, Lyapunov stability theory is used to design the control signals. The efficiency of the control law proposed in this paper is evaluated based on simulations performed on MATLAB-Simulink. The results obtained demonstrate that: First, the proposed control model for fast torque and speed responses, ensuring the drive system converges to the desired operating point during transients without encountering the phenomenon of exceeding the threshold. Second, the system maintains stable operation, even in the presence of load disturbances. Third, this method significantly reduces torque ripple, a common problem in IM drive systems using DTC techniques.
Volume: 16
Issue: 3
Page: 1586-1597
Publish at: 2025-09-01

Resonant converter for fast-charging applications

10.11591/ijpeds.v16.i3.pp1832-1839
Remala Geshma Kumari , Narahari Krishna Kumari , Kankipati Shravya
Resonant converters (RCs) are gaining attention from the research community due to their significant contributions to the architecture of electric vehicle (EV) charging infrastructure. The primary part of RC is responsible for enabling constant-current (CC) charging, which helps lower inrush current, decrease losses, and improve efficiency. While the load current stays constant during charging using the CC approach, the source current grows linearly with charging time. However, pulling a high source current increases the rating of the inverter switches, which stresses them, raises their temperature, increases heat sink demand, and causes conduction loss—all of which are undesirable. Consequently, the rated CC is provided by the P2 topology of RC, which has a lower peak current source than other topologies and will improve charger performance. However, this assertion must be verified by mathematical modeling, design with theoretical calculations, specifications, and MATLAB simulation before execution. By providing a constant load current of 5 A at a DC source voltage of 200 V, the P2 RC and the conventional LCL RC are designed to compare source current values.
Volume: 16
Issue: 3
Page: 1832-1839
Publish at: 2025-09-01

Modeling and simulation of klystron-modulator for linear accelerators in PRTA

10.11591/ijpeds.v16.i3.pp1822-1831
Wijono Wijono , Dwi Handoko Arthanto , Galih Setiaji , Angga Dwi Saputra , Taufik Taufik , Andang Widi Harto
Approximately 70% of commercial industries worldwide use electron accelerator technology for various irradiation processes. The advantages of irradiation processes compared to thermal and chemical processes are higher output levels, reduced energy consumption, less environmental pollution, and producing superior product quality and having unique characteristics that cannot be imitated by other methods. Research Center for Accelerator Technology (PRTA), BRIN, Indonesia is developing standing wave LINAC (SWL) for food irradiation applications at S-band frequencies (±2856 MHz), electron energy of 6-18 MeV, and an average beam power of 20 kW. This paper aims to model, simulate, and analyze the klystron modulator in the RF linear accelerator (LINAC). The klystron modulator is the main component of the RF LINAC, which functions to supply klystron power with the order of megawatt peak DC, so that the klystron can amplify the low-level RF signal from the RF driver into a high-power RF signal with a power of 2-6 MW peak. The klystron modulator modeling is carried out based on mathematical modeling, then simulated using LTspice to analyze the system performance of the klystron modulator. The results of the klystron modulator modeling simulation show stable system performance and dynamic response. So that it meets the specifications of the 6-18 MeV SWL LINAC being developed by PRTA-BRIN.
Volume: 16
Issue: 3
Page: 1822-1831
Publish at: 2025-09-01

Nutritional status and anxiety levels of adolescent during COVID-19 pandemic

10.11591/ijphs.v14i3.22550
Ratna Indriawati , Bambang Edi Susyanto , Farah Dita Amany , Tunjung Wibowo
The COVID-19 pandemic has had various health impacts, experienced by all age groups. However, many health problems are experienced by adolescents. The nutritional and psychological issues of teenagers during the COVID-19 pandemic require additional investigation. This study seeks to investigate the nutritional status and anxiety levels of teenagers during the COVID-19 pandemic. The cross-sectional research. Boys and girls aged 14-18 years became the research subject, who was chosen by using incidental sampling. The independent variable is nutritional status. The variable is anxiety. The data was collected by distributing a questionnaire, the assessment of nutritional status using body mass index, and self-rating anxiety scale (SAS/SRAS) for psychological status. It reported that there is no influence between nutritional status and anxiety in adolescents (p>0.05). There is no influence between nutritional status and anxiety in adolescents.
Volume: 14
Issue: 3
Page: 1436-1440
Publish at: 2025-09-01

How genetic determinism and essentialism relate to health care

10.11591/ijphs.v14i3.25276
Nindiana Choirunisa' , Siti Zubaidah , Hendra Susanto , Chun-Yen Chang
Genetics has become important in various areas of life, especially in healthcare. People can undergo a range of genetic testing to assess their susceptibility to acquiring diseases. Nevertheless, data derived from genetic testing might indicate bias due to genetic determinism and essentialism. This study aimed to provide a comprehensive analysis of the impact of genetic determinism and essentialism on several aspects of healthcare. This study conducted a systematic review approach using the Scopus database and followed the preferred reporting items for systematic reviews and meta analysis (PRISMA) search framework. We initially received 802 publications, then reduced to 49 articles based on inclusion and exclusion criteria, and then content analysis was conducted. Our research showed that determinist bias and genetic essentialism may reduce patient diagnosis, treatment accuracy, and effectiveness. Moreover, biases related to genetic determinism and essentialism may go against healthcare regulations and cause discrimination and other negative clinical outcomes from ethical, social, and legal aspects. To improve this problem, it is essential for laypeople, particularly medical experts, to understand genetic principles related to the development of variances in traits among individuals in a precise and relatable approach.
Volume: 14
Issue: 3
Page: 1499-1514
Publish at: 2025-09-01

Philippine traditional herbal remedies for hypertension

10.11591/ijphs.v14i3.25625
Meliza Parba , Cesar G. Demayo
Certain areas of the Philippines continue to rely on traditional non-pharmacological approaches, such as herbal medicine, for hypertension treatment, a significant public health problem globally. Therefore, a systematic review of plants used in the Philippines to treat hypertension, based on the PRISMA flow diagram, was carried out. Relevant ethnobotanical studies were retrieved from databases such as Google Scholar, ScienceDirect, and PubMed. Following the eligibility screening, 36 ethnobotanical studies were included. The majority of the studies included in this review came from Region XIII (CARAGA), Region VI (Western Visayas), and Region X (Northern Mindanao). The most prevalent plant family and species were Poaceae (12 species) and Cymbopogon citratus (DC.) Stapf. (16 citations), respectively. Leaves were the most common plant parts utilized while decoction was the most frequently mentioned mode of preparation. Oral administration was the most widely used form of administration. This review highlights medicinal plants with potential antihypertensive properties. It underscores the need to conduct a systematic review of their pharmacological properties to determine which have been scientifically validated and are most effective against hypertension.
Volume: 14
Issue: 3
Page: 1585-1594
Publish at: 2025-09-01

Chronic strains, self-efficacy, and mental health: a cross-sectional study among university students in Bangladesh

10.11591/ijphs.v14i3.26125
Rashed Hossain , Rasheda Irshad Nasir
Chronic strains, arise from daily activities, can affect mental healthcare of individuals across various professions, including students. However, how chronic strains affect mental health of students is poorly understood so far for students. We aim to identify the most prevalent chronic strains and examine the effects of chronic strains on mental health conditions adjusted for socio-demographic variables. A total of 393 students were included in the study. They were interviewed through a structured questionnaire between April 6 and May 28, 2023. The outcome variable considered were mental health measured through 14-item questions. The prime explanatory variable was chronic strains. Multivariable linear regressions were used to the relationships of chronic strains, self-efficacy, and socio-demographic characteristics with mental health conditions. We found that 16.7% of participants reported low levels of chronic strains, 66.4% reported moderate levels and 18.3% reported high levels. ‘Tension for future career’ emerged as the most significant source of stress that led chronic strains. Chronic strains and self-efficacy were found to be significant determinants of different mental health conditions. These findings suggest that institutions should focus on improving students’ psychological well-being to mitigate the impact of chronic strains.
Volume: 14
Issue: 3
Page: 1459-1467
Publish at: 2025-09-01

Relationship between shift work and the risk of colorectal cancer among Moroccan women

10.11591/ijphs.v14i3.25572
Hamza Elbaylek , Soumia Ammor
Colorectal cancer (CRC) is a public health problem worldwide, and also in Morocco, with 7.9% of new cancer cases. Dietary factors have been linked to CRC risk; however, several modifiable risk factors have not been studied in Morocco. This study aimed to explore the association between shift work and the risk of colorectal cancer among Moroccan women. A case-control study was conducted at CHU Mohamed VI Marrakech, involving 165 cases and 165 controls. Data were collected using a self-administered questionnaire. For general characteristics, we used the Chi-square test for categorical variables and student’s t-test or Mann-Whitney U for continuous variables to select confounding factors, we ran logistic regression analysis to estimate odds ratios and 95% confidence intervals. Findings from our study show an increased risk of CRC for rotating shift workers ORb:1.74 (95% CI:1.05-2.91) (p-value = 0.01). When stratified by tumor location, night shift work was correlated with an increased risk of rectal cancer, while stratified by age, rotating shift work was also correlated with an increased risk of CRC among those aged 45 to 65 years ORb: 2.18 (95% CI:1.03-4.79) (p-value = 0.048). Findings from this study may be helpful for future research in Morocco and North African countries.
Volume: 14
Issue: 3
Page: 1109-1118
Publish at: 2025-09-01

Satisfaction with health services received by patients in regional hospitals using SERVQUAL

10.11591/ijphs.v14i3.25961
Aniharyati Aniharyati , Abdul Haris , Sulaiman Lalu , Saimi Saimi , Menap Menap , Sastrawan Sastrawan
The concept of patient satisfaction, which has historically been overlooked and undervalued, is gaining importance. We aimed to investigate patient satisfaction with health services at the hospital. This cross-sectional study was conducted between January and June 2024. The study was conducted at Bima City Regional Hospital, NTB, Indonesia. The sample obtained was 437. The level of satisfaction was measured using 19 questions. Chi-square test and logistic regression were used in this study. The highest opportunity for reliability and responsiveness was found in patients aged 20–29 with OR and CI values of 1.97 (1.65–2.98) and 1.76 (1.03–2.09), respectively. For the tangibles dimension, the highest opportunity was in the age of 40-49 with OR and CI values of 1.98 (2.03–4.37). The highest OR (CI) values for each employed status namely 0.96 (0.77–1.21), 0.89 (0.67–1.18), 0.76 (0.41–1.40), 0.79 (0.51–1.70), and 0.92 (0.72–1.23). Meanwhile, at the level of education, respondents with university education had the highest opportunity value in all dimensions, with OR and Ci values of 0.84 (0.58–1.34), 1.42 (0.78–2.51), 0.51 (0.19–1.56), 0.59 (0.22–1.67), 1.45 (0.82–2.87). In conclusion, patient satisfaction with health services was influenced by age, employment status, and provider friendliness.
Volume: 14
Issue: 3
Page: 1404-1411
Publish at: 2025-09-01

Factor associated with physical activity level among secondary boarding school students in Selangor, Malaysia

10.11591/ijphs.v14i3.25782
Ahmad ‘Afifu’d-din Hisamuddin , Hazizi Abu Saad
This cross-sectional study aimed to assess the prevalence and factors associated with physical activity among secondary boarding school students. Data were collected using a self-administered questionnaire that captured socio-demographic information, physical activity levels, sedentary behavior, social support (from family and peers), and psychological factors (depression, anxiety, and stress). Anthropometric measurements, including height and weight, were obtained using a SECA217 stadiometer and a Tanita weighing scale, with body mass index (BMI)-for-age subsequently calculated. A total of 181 participants were included in the study. The results indicated that the majority of students met the recommended physical activity guidelines. Approximately two-thirds of participants were classified as having a normal BMI, while the majority exhibited high levels of sedentary behavior. Regarding social support, only one-fifth of students reported receiving adequate family support, while half of the students reported adequate peer support. Psychological assessments revealed that one-third of participants exhibited normal depressive symptoms, whereas nearly half exhibited symptoms of anxiety and stress. Significant associations were identified between physical activity levels and several factors, including age, gender, family support, peer support, and stress. In conclusion, while most secondary boarding school students in this study met the recommended daily amount of physical activity, high levels of sedentary behavior and varying levels of social support and psychological distress highlight areas that warrant further intervention.
Volume: 14
Issue: 3
Page: 1428-1435
Publish at: 2025-09-01

Social media and social capital as risk of voluntary counseling and testing for human immunodeficiency virus

10.11591/ijphs.v14i3.25799
Eny Qurniyawati , Jayanti Dian Eka Sari , Farah Fadhillah , Yeshita Alifia Yuvianti , Prima Kartika , Nayla Mohamed Gomaa Nasr
Teenagers are more susceptible to contracting human immunodeficiency virus (HIV). Of the 34 provinces in Indonesia, East Java continues to have the highest rate of new HIV diagnoses. One tactic for HIV prevention and control is voluntary counseling and testing (VCT). The purpose of this study is to examine the risk factors associated with the uptake of VCT for HIV among adolescents in the general population of East Java. A cross-sectional study design, a quantitative technique, and an observational methodology are all used in this research. 329 individuals in total, selected at random, took part in this study. The prevalence ratio (PR) with a 95% confidence interval was examined in order to determine the level of risk. Out of all the parameters that were found, social media access (PR = 10.133; 95%CI 1.293 - 79.422) and social capital (PR = 10.741; 95% 3.240 - 35.601) were found to have a substantial impact on VCT for HIV. Thus, it's critical to enhance social capital and implement educational initiatives on VCT for HIV using social media in order to improve teenagers' favorable perceptions of the treatment.
Volume: 14
Issue: 3
Page: 1171-1178
Publish at: 2025-09-01

Epidemiology of tuberculosis in Morocco: diagnosis, treatment, quality of life, and associated factors

10.11591/ijphs.v14i3.26185
Youssef El Bahi , Soukaina Loulidi , Mohamed Loukid , Samia Rkha
Tuberculosis remains a major public health challenge worldwide, despite significant advances in treatment and prevention. In Morocco, 30,000 cases of tuberculosis are recorded each year. In the Marrakech-Safi region, the incidence reaches 50 cases per 100,000 inhabitants. The aim of this research was to assess the effectiveness of current diagnostic and treatment, and to measure the impact of tuberculosis on patients' quality of life. A cross sectional study was carried out on a sample of 480 tuberculosis patients. The results showed that low education levels (53.86%) and high unemployment (40.8%) were prevalent. More than 51% of patients do not have health insurance. High housing density was correlated with increased prevalence, and diabetes was frequent (40.19%). 27.50% used medicinal plants, and 13.11% interrupted medication due to long treatment duration. Males were more symptom-free (p<0.000). Males had more severe symptoms than females such as sputum (163 vs. 58 cases), weight loss (224 vs. 131 cases), cough (184 vs. 86 cases), and hemoptysis (70 vs. 27 cases). Urban residents showed significant differences in tuberculosis types (p = 0.034). Occupation and prior treatment influenced tuberculosis distribution and extrapulmonary tuberculosis prevalence (p = 0.000). 21.46% were permanently affected in their social life. Higher education level and non-smoking was linked to better health (p = 0.016; p = 0.002). These results contribute to a better management of diagnostic, treatment, and prevention strategies adapted to tuberculosis patients by strengthen health education and promote rapid access to specialist care.
Volume: 14
Issue: 3
Page: 1160-1170
Publish at: 2025-09-01

Depression and cognitive impairment in Malaysian elderly: insights from a nationwide study

10.11591/ijphs.v14i3.25220
Azlina Wati Nikmat , Nor Jannah Nasution Raduan , Nurul Azreen Hashim , Noor Azleen Ahmad Tarmizi , Nor Anita Affandi , Nor Farahdila Hairoman , Muhd Zulfadli Hafiz Ismail , Tengku Mohd Saifuddin Tengku Kamarulbahri
Depression and cognitive impairment are two prevalent mental health conditions among older adults. This study aimed to investigate the factors associated with cognitive impairment among older adults with depression in Malaysia. Data were drawn from the National Health and Morbidity Survey 2018, a nationwide, cross-sectional study using a two-stage stratified cluster sampling. The sample included respondents aged 50 years and above. Cognitive impairment was assessed using the identification and intervention for dementia in the elderly (IDEA) screening tool, while depression was identified using the validated Malay version of the Geriatric Depression Scale (M-GDS-14). Key variables examined included sociodemographic characteristics, physical activity levels, and social support. Bivariate and multiple logistic regression analyses were performed to identify factors significantly associated with cognitive impairment. Results indicated that cognitive impairment was significantly higher among physically inactive individuals (AOR = 2.70, 95% CI: 0.21, 0.65) and those with low to fair social support (AOR = 1.79, 95% CI: 1.12, 2.86). These findings highlight the importance of incorporating physical and social activities into care plans for elderly patients with depression, particularly those with cognitive impairments.
Volume: 14
Issue: 3
Page: 1129-1136
Publish at: 2025-09-01

Knowledge and practices of nurses regarding prevention of hepatitis B and C viral infection: findings from a single center cross-sectional study in Bangladesh

10.11591/ijphs.v14i3.25824
Rahima Parvin , Md. Abdul Jabbar , Hafiza Sultana , Mohammad Meshbahur Rahman , Most Rownak Zahan Rimu , Rafaat Choudhury
The study aimed to evaluate the nurses’ levels of knowledge and practices in preventing hepatitis B and C viral infections in tertiary level hospitals. A cross-sectional study was conducted among 119 nurses in tertiary level hospital by simple random sampling technique. Data were collected by face to-face interview with semi-structured questionnaire and analysis involved the frequency distribution tables, bar diagrams, and proportion (z-tests). The analysis revealed that most of the nurses fell within the 25-34 age groups, and predominantly held a diploma in nursing. Analysis indicated that 95.79% demonstrated good knowledge, whereas 70.59% exposed good practices. Proportion tests revealed significant associations between demographic factors and knowledge/practice levels. Higher educated nurses (poor knowledge, good knowledge: 13.0%, 87.0%; p = 0.021) and those in older age groups (poor practice, good practice: 36.8%, 63.2%; p = 0.002) displayed significantly better knowledge and practices. This study highlights good knowledge among nurses concerning the prevention of hepatitis B and C infections; significant variation exists in the application of preventive practices. Training programs are recommended to bridge the gap between knowledge and practice.
Volume: 14
Issue: 3
Page: 1294-1303
Publish at: 2025-09-01
1 2 3
...
1886 1887
Show 24 of 1887

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