UNISTEK

Research Trends: Dye Sensitized Solar Cell Sebagai Sumber Energi Terbarukan Ramah Lingkungan

Fareka — Mon, 16 Feb 2026 00:00:00 +0700

Currently, petroleum is a main energy source used to meet the world’s needs. However, petroleum is an energy that has the potential to decrease over time. Besides that, sunlight can be used to reduce petroleum energy consumption. Solar energy is a form of renewable energy. Dye Sentisized Solar Cell (DSSC) is a technology for converting light energy into electricity. However, the efficiency value obtained from DSSC is still small. A lot of research related to DSSC has been carried out. In the period 2020-2024, there were 59 articles related to DSSC on Google Scholar which had more than 36 citations. The most articles related to DSSC were published in 2021, namely 22 articles. Meanwhile, the highest number of citations for articles related to DSSC was in 2020, namely 2424 citations. The research topic that has been widely developed is modification of light-sensitizing substances in DSSCs. The review result combination of superior modifications that have been successfully carried out by previous research on each component in the DSSC is expected to increase efficiency value to meet the world's energy needs.

Pengaruh Implementasi TQM Terhadap Penurunan Tingkat Cacat Produk Di PT. Ciptaunggul Karya Abadi

Nadiahun Nasywa, Apid Hapid Maksum, Wahyudin, Billy Nugraha, Seka Pertiwi — Mon, 16 Feb 2026 00:00:00 +0700

Ciptaunggul Karya Abadi is a private company engaged in the Manufacturing of Metal Stamping Parts, Tools and Dies. In the face of fierce industry competition, the consistency of product quality is a determining factor for competitiveness. The high rate of product defects is a major concern for companies as it impacts cost, efficiency, and customer satisfaction. This study aims to analyze the effect of the implementation of Total Quality Management (TQM) on reducing the level of product defects. The method used was a case study with data collection through direct observation, interviews with stakeholders, and document analysis over a period of four months. The results show that the application of TQM elements such as customer focus, obsession with quality, scientific approach, long-term commitment, teamwork, continuous system improvement, education and training, controlled freedom, unity of purpose, and employee involvement and empowerment have a significant effect in reducing product defects. The implementation of TQM is also able to create a better quality culture in the production environment. Based on the results of the analysis, it can be concluded that PT. Ciptaunggul Karya Abadi has implemented all elements of Total Quality Management (TQM) as an effort to improve product quality and reduce the level of defects, but the implementation is not fully optimal. Therefore, it can also be concluded that Total Quality Management (TQM) is an effective strategic approach to improve product quality in a sustainable manner.

Analisis Pengendalian Kualitas Menggunakan Metode Statistical Quality Control(SQC) di PT XYZ

Dhea Carisa Ardelia, Wahyudin Wahyudin — Mon, 16 Feb 2026 00:00:00 +0700

Quality control is a crucial aspect of the manufacturing industry to ensure product conformity with standards and to reduce the defect rate. This study aims to analyze quality control on Weld and Nut products at PT XYZ using the Statistical Quality Control(SQC) method with the Seven Tools approach. This includes the use of tools such as check sheets, histograms, scatter diagrams, control charts, Pareto diagrams, stratification, and fishbone diagrams. The data analyzed covered production from November 2024 to January 2025, with a total of 8,478,678 parts produced and 428 defective products identified. The analysis revealed that the dominant types of defects were kizu, kashiri, burry, and dia out spec. Control chart and Pareto analysis indicated that human and machine factors were the primary causes of product non-conformities. Improvement recommendations include enhanced process supervision, operator training, and machine setting adjustments. The application of the SQC method effectively identified root causes and provided concrete recommendations to improve product quality at PT XYZ.

Evaluasi Penerimaan dan Pengalaman Pengguna Platform SMArt LMS Menggunakan Integrasi Metode TAM dan Analisis Deskriptif Kualitatif

Muhidin, Mahmudin — Mon, 16 Feb 2026 00:00:00 +0700

The SMArt LMS platform is a strategic infrastructure implemented by the Directorate of Senior High Schools to support the digitalization of education in Indonesia. This study aims to evaluate user acceptance and experience of SMArt LMS using an integration of the Technology Acceptance Model (TAM) and qualitative descriptive analysis. Data were collected from 1,718 participants of the Technical Guidance (Bimtek) program across nine regions. Quantitative analysis showed high reliability for the instruments, with Cronbach’s Alpha values exceeding 0.60, specifically 0.966 for the Perceived Ease of Use (PEOU) construct. Qualitative triangulation revealed that discussion features and Follow-up Plan (RTL) instructions significantly assisted material comprehension. However, technical aspects such as access stability across various devices still require optimization. This research provides strategic recommendations for platform managers to develop LMS features that are more adaptive and aligned with the digital ecosystem in high school environments.