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Wiwik Sulistiyowati
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PROZIMA (Productivity, Optimization and Manufacturing System Engineering)
Published by Universitas Muhammadiyah Sidoarjo
ISSN : 25415115     EISSN : 25415115     DOI : https://doi.org/10.21070/prozima
Core Subject : Engineering,
Industrial & Manufacturing Engineering
Aim: to facilitate scholar, researchers, and teachers for publishing the original articles or review articles. Scope: Industrial Engineering included: Supply Chain Management Optimization and industry system Ergonomics Strategic Management Quality Engineering and Management Sustainability Experiment design Statistic Project Management Productivity Technology Management
Arjuna Subject : Teknik (semua kategori) - Tenik Industri dan Manufaktur
Articles 4 Documents
 1 
Search results for , issue "Vol. 9 No. 2 (2025): December" : 4 Documents clear
Effects of Music and Time of Day on Physiological Responses and Fatigue during Indoor Cycling: Pengaruh Musik dan Waktu terhadap Respons Fisiologis dan Kelelahan selama Bersepeda di dalam Ruangan Halim, Stefanny; Sarvia, Elty
PROZIMA (Productivity, Optimization and Manufacturing System Engineering) Vol. 9 No. 2 (2025): December
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/prozima.v9i2.1686

Abstract

Cycling has health benefits, but factors such as timing and music can affect performance and fatigue levels. There is still debate about the optimal time for cycling and the effects of music on endurance and perceived fatigue. In addition, the physiological responses of men and women to cycling have not been studied. This study used four indoor cycling scenarios, namely: (1) morning–without music, (2) morning–with music, (3) afternoon–with music, and (4) afternoon–without music. The objectives of this study were to analyze the effects of time and music on physiological responses, evaluate differences in fatigue between men and women, and assess the correlation between energy (Ecost) and heart rate while cycling. The parameters observed included heart rate, blood pressure, fatigue level (IFRC), and heart rate variability (%CVL). The results showed that the four scenarios did not produce significantdifferences in heart rate, blood pressure, route completion time, or fatigue levels. Blood pressure after activity tended to be higher in men, while heart rate was higher in women. The %CVL classification showed that most respondents were in the “non-urgent improvement” category (women 57.14%; men 78.57%). IFRC scores also showed that most respondents were at a moderate level of fatigue. Spearman's rank test confirmed a very strong correlation between Ecost and heart rate in all scenarios, both in men and women. These findings provide an overview of physiological responses and fatigue in indoor cycling under different time and music conditions.
Developing Strategies for Improving The Performance of Educational Institutions Using The European Excellence Model: Pengembangan Strategi Peningkatan Kinerja Institusi Pendidikan Menggunakan European Excellence Model Nurdiansyah, Rudi; Aufa, Muhammad Izzul; Sholikha, Nikmatus; Kuswardani, Chintia Dwi Wangsa; Widowati, Tamara Rahma
PROZIMA (Productivity, Optimization and Manufacturing System Engineering) Vol. 9 No. 2 (2025): December
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/prozima.v9i2.1693

Abstract

This study aims to develop performance improvement strategies for educational institutions based on theEuropean Excellence Model (EEM). The research is conducted at an upper secondary-level educational institution in Malang City using a self-assessment method and a questionnaire constructed based on seven criteria and 32 subcriteria of the EEM. The analysis involves scoring and examining correlations between the Direction and Execution dimensions with the Results dimension, particularly stakeholder perceptions. The institution scores a total of 360 points, identifying several priority areas for improvement, such as organizational culture and performance transformation. The proposed strategies leverage significant internal strengths to address the identified weaknesses
Analysis of Inventory Management Using The Demand Driven Material Requirements Planning (DDMRP) Approach in The Fast-Food Industry Nur Wakhid Habibullah; Vanany, Iwan
PROZIMA (Productivity, Optimization and Manufacturing System Engineering) Vol. 9 No. 2 (2025): December
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/prozima.v9i2.1740

Abstract

Effective inventory management is a critical element in ensuring smooth operations and business success, particularly in the fast-food industry, which is characterized by highly dynamic demand. CV X, a fast-food company based in East Java, is currently facing challenges related to overstock and stockout conditions that hinder operational efficiency. Additionally, limited cold storage capacity further complicates efforts to maintain inventory balance amidst fluctuating demand. As the industry shifts from a push-based to a pull-based system—prioritizing flexibility and responsiveness in meeting customer demand—an adaptive inventory management approach becomes essential. This study analyzes the inventory management system at CV X using the Demand-Driven Material Requirements Planning (DDMRP) method to address overstock and stockout issues. DDMRP is chosen due to its ability to integrate dynamic buffer stock control and inventory adjustments based on real-time demand signals, enabling a more responsive supply chain while optimizing the use of limited cold storage capacity. This research employs secondary data from CV X for the year 2023, including production, sales, and inventory records, analyzed using descriptive and quantitative methods. The results indicate that the implementation of DDMRP successfully reduced the average inventory level by 6.62%, decreased overstock by 96.29%, and lowered stockout occurrences by 88.51%.
Inventory Control Analysis in Food Retail Using the Demand Driven Material Requirements Planning (DDMRP) Method: Analisis Pengendalian Persediaan pada Retail Pangan Menggunakan Metode Demand Driven Material Requirements Planning (DDMRP) Riyanto, Anisah; Vanany, Iwan
PROZIMA (Productivity, Optimization and Manufacturing System Engineering) Vol. 9 No. 2 (2025): December
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/prozima.v9i2.1757

Abstract

The food supply chain is an integrated system encompassing all stages, from production, processing, distribution, to public consumption. Efficiency in the food supply chain is a crucial aspect to ensure the availability, timeliness, and accessibility of staple food distribution systems such as rice. Rice requires an efficient and equitable distribution system to meet the needs of all levels of society, including Civil Servants (PNS). PT. Food Station Tjipinang Jaya, a regionally-owned enterprise (BUMD), has implemented a rice provision program for civil servants, distributed through a network of partner retail stores. This study aims to determine the optimal buffer stock amount and replenishment time for each distribution point. The case study was conducted in Surabaya City, taking into account the number of civil servants and the distribution of their residential locations. The results of this study are expected to provide strategic recommendations for planning efficient, targeted, and sustainable food logistics distribution to optimally support regional food security programs.

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