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All Journal TELKOMNIKA (Telecommunication Computing Electronics and Control) Journal of Telenursing (JOTING) Indonesian Journal of Global Health Research
Zulkarnain Zulkarnain
Universitas Sriwijaya
Computer Science & IT Health Professions Nursing

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Evaluasi Penyelenggaraan Surveilans COVID-19 di Puskesmas Linda Zuliana; Haerawati Idris; Zulkarnain Zulkarnain
Journal of Telenursing (JOTING) Vol 4 No 2 (2022): Journal of Telenursing (JOTING)
Publisher : Institut Penelitian Matematika, Komputer, Keperawatan, Pendidikan dan Ekonomi (IPM2KPE)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31539/joting.v4i2.4392

Abstract

This study aims to evaluate the input of the puskesmas, including personnel resources (Head of City Health Office, Head of P2P Dinkes, Head of Health Center, COVID manager of Puskesmas, Puskesmas staff, COVID tracer, Community) facilities, funds and methods. The method used is descriptive qualitative. The results showed that the COVID-19 surveillance staff aspect was not appropriate for educational qualifications; the method used was following the guidebook such as the availability of prevention and evaluation guidelines, the available facilities/infrastructure in terms of quantity or quality, the communication tools were adequate and the equipment was out of stock medical use is also good, but PPE clothes are limited. The method for achieving the target of finding suspected COVID-19 is suitable. Funds used in the implementation of surveillance activities are sourced from APBD funds and the amount of the budget follows the needs, for funds for equipment are dropped from the health office. The implementation of case findings has been carried out according to procedures, and supervision of the increase in cases has also been carried out correctly. In conclusion, indicators of the success of implementing COVID-19 epidemiological surveillance at the Jambi City Health Center can be seen from the achievement of the set targets and the achievement of testing targets for case finding. The reason for not achieving the targets in testing and tracing according to informants' statements is because of many rejections in the Community. Keywords: COVID-19, Evaluation, Surveillance
Performance assessment of an adaptive model predictive control with torque braking for lane changes Zulkarnain Zulkarnain; Irwin Bizzy; Armin Sofijan; Mohd Hatta Mohammed Ariff
TELKOMNIKA (Telecommunication Computing Electronics and Control) Vol 24, No 2: April 2026
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/telkomnika.v24i2.27167

Abstract

The growing demand for autonomous vehicles requires robust control systems that can maintain safety during complex maneuvers like lane changes. However, a significant research gap exists in developing controllers that effectively manage the combined challenges of steering and braking across diverse and unpredictable driving conditions, such as varying speeds and low-friction road surfaces. This research addresses this gap by proposing and evaluating an adaptive model predictive control (MPC) system integrated with a torque braking distribution strategy. The key advantage of our adaptive method is its ability to continuously update its internal model in real-time, allowing it to anticipate and respond to changing road friction and vehicle dynamics more effectively than a static controller. In simulations of a lane change maneuver across speeds of 10-25 m/s and road friction levels from 0.3 (icy) to 1 (dry asphalt), the proposed system demonstrated a substantial performance improvement. The proposed framework demonstrated a 52.8% average reduction in lateral tracking error and enhanced stability by reducing the yaw rate by up to 41.8% on low-friction surfaces, compared to a non-adaptive MPC baseline. These results quantitatively confirm that our framework’s synergistic coordination of steering and braking significantly enhances the safety, precision, and reliability of autonomous lane change maneuvers.
Chlorpyrifos Residues and Water Quality Impairment in Tropical Rice Paddy Ecosystems of South Sumatra, Indonesia Wiwiet Wulandari; Nurhayati Damiri; Zulkarnain Zulkarnain; Rostika Flora; Salni Salni; Elvi Sunarsih
Indonesian Journal of Global Health Research Vol. 8 No. 6 (2026): Indonesian Journal of Global Health Research: December 2026
Publisher : GLOBAL HEALTH SCIENCE GROUP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37287/ijghr.v8i6.2711

Abstract

Organophosphate pesticide use in rice cultivation may leave residues in soil and water and interact with runoff, erosion, water management, and organic-matter decomposition. This descriptive observational study examined chlorpyrifos residues in water and soil and evaluated paddy-water quality in Lalan District, Musi Banyuasin Regency, South Sumatra. Rice-growing sites in Sari Agung, Mulya Jaya, and Sukajadi villages were selected purposively. Six composite soil samples and three water samples were analysed for chlorpyrifos using liquid chromatography-mass spectrometry according to an internal laboratory method, while nine water samples coded 1A-3C were analysed for total suspended solids (TSS), pH, five-day biochemical oxygen demand (BOD₅), and chemical oxygen demand (COD). Data were summarised descriptively and compared with the Class I river-water criteria applied by the laboratory. Chlorpyrifos was detected in all water samples at 0.0023-0.0560 mg/L and in all soil samples at 5.4175-73.7173 mg/kg. TSS ranged from 20 to 410 mg/L, pH from 3.26 to 5.83, BOD₅ from 0.73 to 19.8 mg/L, and COD from 2 to 60 mg/L. Four of nine samples exceeded the TSS criterion, all samples were below the pH range of 6-9, seven exceeded the BOD₅ criterion, and six exceeded the COD criterion. The findings indicate chlorpyrifos contamination and substantial water-quality pressure. TSS was the most relevant parameter for explaining the potential particle-associated transport of chlorpyrifos, whereas pH, BOD₅, and COD characterised general water conditions and were not compound-specific indicators of organophosphate contamination. Because the residue and water-quality datasets were not paired spatially and temporally, causal relationships and quantitative correlations could not be established.
Co-Authors Armin Sofijan Elvi Sunarsih Gusrinety Gusrinety Haerawati Idris Irwin Bizzy Jamal Jamal Linda Zuliana Luci Juniarti Mohd Hatta Mohammed Ariff Novrikasari Novrikasari, Novrikasari Nurhayati Damiri Pierre Ramadha K Rizma Adlia Syakurah Rostika Flora Salni Salni Wiwiet Wulandari