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Clean Energy and Smart Technology
Published by CV Nature Creative Innovation
ISSN : -     EISSN : 29642647     DOI : https://doi.org/10.58641/cest
Core Subject : Science, Engineering,
Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Mechanical Engineering
The Clean Energy and Smart Technology (CEST) journal aims to provide a platform for researchers, academicians, and professionals to publish high-quality articles that explore innovative ideas and solutions in the field of energy and technology. It focuses on fostering interdisciplinary research and practical applications that address current challenges and opportunities in energy efficiency, sustainability, and technological advancements. Scope The journal covers a wide range of topics, including but not limited to: Energy and Cost Efficiency: Analysis of cost-saving measures and efficient energy utilization in various sectors. Social Impact of Energy and Technology: Studies on how energy and technological developments affect societal well-being. Sustainable and Smart Architecture: Design and development of energy-efficient and smart buildings. Environmental and Safety Concerns: Investigation of hazardous substances in residential and industrial environments. Structural Innovations: Research on earthquake-resistant technologies and advanced materials. Legal and Policy Frameworks: Examination of laws and regulations governing energy and technology implementation. Renewable Energy Development: Exploration of new and renewable energy sources and technologies. Multidisciplinary Applications: Cross-cutting studies that integrate energy and technology with fields such as informatics, engineering, physics, and chemistry.
Arjuna Subject : Energi (semua kategori) - Energi (Lain-Lain)
Articles 41 Documents
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PLANNING OF ATHLETE'S VILLAGE IN WONOSOBO WITH A GREEN ARCHITECTURE APPROACH Romadhoni, Desika; Muafani; Hendriani, Adinda Septi
Clean Energy and Smart Technology Vol. 4 No. 1 (2025): October
Publisher : Nacreva Publisher

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Abstract

This paper presents the planning of an Athlete’s Village in Wonosobo, Central Java, using a green-architecture approach to deliver high-quality temporary housing and training facilities while minimizing environmental impacts. The study combines literature review, field observation, and comparative analysis of established athlete housing precedents (e.g., Kemayoran and Jakabaring) with site appraisal and space-requirement programming. The proposed scheme organizes the 1-ha site into clear functional precincts—accommodation and training, management and support, utilities and waste, and visitor/public interface—linked by legible, barrier-free circulation. Passive design is prioritized through cross-ventilation, daylighting, strategic orientation, and a robust green/open-space network; active systems are limited to targeted, high-efficiency equipment. Resource strategies include rainwater harvesting, low-impact materials, and waste-to-resource handling (segregation, hygienic collection, and landscape-based polishing). The outcome is a context-responsive layout that improves athlete comfort and performance, strengthens operational safety and maintainability, and positions Wonosobo as a competitive-sports hub that models environmentally responsible development. The work’s contribution is a replicable planning framework for medium-scale athlete housing in Indonesian secondary cities, coupling spatial programming with green-infrastructure tactics that are feasible under local climatic, managerial, and budgetary constraints.
DESIGN OF YASMIN FARM DAIRY CATTLE FARMING AREA IN PURWOREJO Maksum, Rizal; Hermanto, Heri; Hermawan, Hermawan
Clean Energy and Smart Technology Vol. 4 No. 1 (2025): October
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Abstract

This study proposes the design of an integrated dairy farming area at Yasmin Farm, Purworejo, to optimize land use, safeguard animal welfare, and enhance operational efficiency. A mixed qualitative–quantitative design approach was adopted, combining literature review, comparative case observations of reference farms, on-site surveys, and a space-requirement analysis that informed the layout of barns, milking facilities, feed storage, and waste-handling units. The planning embeds green-design strategies—natural ventilation and daylighting, water harvesting, resource-efficient circulation, and staged waste valorization (composting/biogas)—alongside appropriate automation for herd monitoring and milking. The resulting scheme organizes the estate into clear functional zones (production, support, education–tourism, and utilities) to minimize cross-contamination risk, shorten process flows, and improve worker safety. Expected benefits include more stable milk quality and capacity, reduced environmental footprint, and opportunities for education and community engagement. The work’s novelty lies in a context-specific, medium-scale dairy farm blueprint that couples spatial programming with sustainability and edutourism functions, offering a practical model for Central Java and similar tropical settings.
CHALLENGES IN DATA SECURITY: TECHNOLOGICAL AND REGULATORY CHALLENGES IN THE PROTECTION OF PERSONAL DATA IN THE DIGITAL ERA Asnawi, Muhamad Fuat; Muhammad Alif Muwafiq Baihaqy; Saifu Rohman; Nur Hasanah; Dian Asmarajati
Clean Energy and Smart Technology Vol. 4 No. 1 (2025): October
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Abstract

This study examines the challenges of personal data security in the digital era, focusing on encryption technology and the role of artificial intelligence (AI) in protecting personal data in an increasingly complex digital environment. Adopting a Systematic Literature Review (SLR) method, this study examines 91 articles obtained from IEEE Xplore and ScienceDirect to identify trends and challenges in personal data security, particularly in the context of cloud computing and the Internet of Things (IoT). The results show that although encryption technology and AI offer advanced solutions, major challenges remain in the implementation of global regulations such as GDPR and differences in policies and infrastructure across countries. This study also discusses potential solutions such as blockchain and the implementation of adaptive encryption to address weaknesses in personal data security.
REDESIGN AND CREATION OF THE CROCKING MACHINE FABRIC LOCK FOR MORE ACCURATE CROCKING Reza Tripratama Budiono; Basuki, Puji
Clean Energy and Smart Technology Vol. 4 No. 1 (2025): October
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Abstract

This study aims to redesign the fabric locking system on a crocking machine to address the main problem, namely how to create a more stable and accurate locking system in the fabric colorfastness testing process. The research methods include literature study, design, prototype creation, and experiential testing. The results show that the old locking system with 2 bolts requires an average of 28 seconds for installation, testing, and removal, but produces less stable clamping and the fabric tends to wrinkle. Meanwhile, the new locking system with 4 bolts requires 46 seconds, but is able to provide a stronger, more stable, and more accurate clamping without causing wrinkling. Tests on various types of fabrics such as cotton combed 24s, poly span rib, and DTY brush light weight can prove that the new design is more consistent in maintaining fabric stability during testing. Although it requires longer installation and removal times, the new locking system is proven to improve test results, improve fabric clamping quality, and reduce the risk of machine damage. This design is recommended for application in the textile industry to improve the quality of colorfastness testing and product quality consistency.
PERFORMANCE OF VORTEX TURBINES IN ULTRA-LOW-HEAD HYDROELECTRIC POWER PLANTS: A NUMERICAL STUDY Firdaus Asyhar; M. Furkon Hakim; Sunaryo
Clean Energy and Smart Technology Vol. 4 No. 1 (2025): October
Publisher : Nacreva Publisher

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Abstract

The performance of vortex turbines in ultra-low-head hydropower plants is crucial for harnessing energy in irrigation channels and small rivers. Therefore, an optimal design is needed to maximize the conversion of flow energy into electrical power. This study aims to evaluate and determine the best-performing configuration of ultra-low-head vortex turbines. The method used is Computational Fluid Dynamics (CFD) simulations employing the k-ω Standard turbulence model, with variations in the number of blades (3, 5, and 7) and a fixed blade angle of 15°. The results show that the 7-blade configuration with a 15° angle provides superior performance, generating 3.90 W of power, reducing NPSH by 2%, and increasing force by 6%, with a force value of 52.65 N. The implications of these findings suggest that the 7-blade–15° configuration is a suitable design reference for optimizing ultra-low-head vortex turbines in micro-scale hydroelectric power plants, supporting the utilization of renewable energy in irrigation networks and rural areas.
GOLD PRICE PREDICTION SYSTEM USING THE RANDOM FOREST METHOD Kurnia Agung Prastyo; Sibyan, Hidayatus; Nur Hasanah
Clean Energy and Smart Technology Vol. 4 No. 1 (2025): October
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Abstract

Gold is one of the most important commodities, serving as an investment instrument and a hedge against inflation. The high volatility of gold prices demands accurate predictions to support investment decision-making. This study aims to develop a gold price prediction system using the Random Forest method based on machine learning. The dataset used consists of daily gold prices from Yahoo Finance covering the period from 2020 to 2024. The research stages include data collection, preprocessing, model training, evaluation, and implementation into an interactive website. Evaluation results show a MAE of 329.31, MSE of 148,599.40, RMSE of 385.49, and a negative R² value (-1.97), indicating the model is not yet accurate. However, the system can provide a general overview of gold price trends and can be further improved to enhance prediction accuracy.
HOUSING PLANNING WITH A SCANDINAVIAN CONTEMPORARY ARCHITECTURE APPROACH IN WONOSOBO jatmiko; Hendriani, Adinda Septi
Clean Energy and Smart Technology Vol. 4 No. 2 (2026): April
Publisher : Nacreva Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58641/cest.v4i2.203

Abstract

To realize the concept of housing planning and design with a Scandinavian contemporary architectural approach as a clean, healthy, and cool residential area equipped with supporting facilities such as sports facilities, prayer rooms, gardens, which can provide a sense of comfort through processing the site plane layout based on architectural concepts so that it can give an impression to the building by applying appropriate forms. The Design Method is a system or strategy used to collect data in the form of information and ideas that can support the design. By analyzing the results of observation data and literature studies, so that potential and problems can be obtained that will be the basis for design. Analyze site conditions in the form of site utilities, sun orientation, wind direction, noise, achievement/accessibility, location and social conditions of the local community. From the results of comparative studies that have been carried out on four different buildings, students draw conclusions about how the concept of a Scandinavian contemporary house and what components are usually found in Scandinavian contemporary house buildings. From the three buildings, students will take several room criteria that will be used as considerations in planning Housing Planning With a Scandinavian Contemporary Architectural Approach in Wonosobo. The plan will include the construction of several housing clusters of various sizes. Natural lighting will be maximized so that the homes will reflect Scandinavian contemporary values.
OPTIMIZATION OF THE STRUCTURAL DESIGN OF THE CHASSIS OF AN AUTOMATED GUIDE VEHICLE USING EXPERIMENTAL AND NUMERICAL METHODS Danu Prasetyo; Sunaryo; Heru Nugroho; Budi Santoso
Clean Energy and Smart Technology Vol. 4 No. 2 (2026): April
Publisher : Nacreva Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58641/cest.v4i2.204

Abstract

Automated Guided Vehicles (AGVs) are a smart transportation solution that is increasingly being used in industry. The stability and strength of the chassis are critical factors in ensuring AGV performance when carrying loads. This study examines the effects of load variations and material types on the structural performance of AGV chassis through an experimental approach and numerical simulation based on Finite Element Analysis (FEA). The materials used were ASTM A36 and ASTM A500, with loads of 5 kg, 10 kg, and 15 kg. A chassis design with dimensions of 400 × 300 × 80 mm was modeled and analyzed using Computational Fluid Dynamics (CFD) software. Validation was performed through experimental testing using a dial indicator. The results show that at a 15 kg load, ASTM A500 experienced a maximum stress of 60.15 MPa and a deflection of 0.00078 m, lower than ASTM A36, which reached 68.06 MPa and a deflection of 0.00089 m. The difference between the simulation and experimental results was well below 10%. Similarly, regarding the safety factor, ASTM A500 has a value of 2.7145 at maximum load, indicating that this material has a higher safety margin compared to ASTM A36. Based on these results, ASTM A500 is considered more efficient and stable, and is more recommended for AGV chassis applications. This study highlights the importance of integrating numerical and experimental methods to produce optimal structural designs.
IMPLEMENTATION OF THE FORCED ALIGNMENT ALGORITHM FOR AUDIO AND TEXT ALIGNMENT ON THE WEBSITE FOR THE MEANING OF THE JURUMIYAH BOOK Cahyadi, Yoga Ari; Hidayatus Sibyan; Nur Hasanah
Clean Energy and Smart Technology Vol. 4 No. 2 (2026): April
Publisher : Nacreva Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58641/cest.v4i2.206

Abstract

Learning basic nahwu in studying yellow books still faces various challenges, especially in terms of interpreting books objectively and interactively. This study aims to build an automatic book interpretation system using forced alignment based on Wav2Vec2 + CTC Segmentation for audio and text alignment. This system is designed to provide automatic interpretation with audio and text alignment to facilitate the preparation of students in interpreting books and learning nahwu, especially jurumiyah books. The implementation process involves the extraction and pre-processing of audio and text data, audio and text are then aligned using Wav2Vec2 to produce logits output containing the number of samples, frames, and character tokens, then logits are received by CTC to calculate the alignment, manage blank tokens, calculate sequence probabilities and decoding to text to produce a timestamp array. Then the timestamp is validated and normalized and the final result is TextGrid or JSON. Then the results are integrated in an interactive website interface. The results of this study indicate that the forced alignment algorithm using the Wav2Vec2 model is capable of aligning audio and text with a fairly high level of accuracy. This makes it easier for users to understand the contents of the book through segmented audio playback per sentence or chapter. It is hoped that this research can contribute to the development of learning media for Islamic boarding schools' yellow books based on alignment technology.
Design and Application for End of Arm Tooling in Plastic Injection Molding M Lutfi Khanif; Basuki, Puji; Niyar Candra A; Hendar Wirawan; Jotho
Clean Energy and Smart Technology Vol. 4 No. 2 (2026): April
Publisher : Nacreva Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58641/cest.v4i2.208

Abstract

This study discusses the implementation of End of Arm Tooling (EOAT) in the injection molding production process at Toyoda Kakou Co., Ltd. EOAT is a device attached to the end of a robotic arm that functions to automatically remove products from the mold. The research method used is descriptive qualitative with a case study approach. The evaluation results show that the use of EOAT is able to reduce the cycle time from approximately 26,0 seconds to 22.5 seconds, product defect rate decrease from 4% to 1%, and reduce from 1 employee to zero. This study also presents the detailed cost of EOAT components using the Yushin brand, with a total estimated value of IDR 6,350,000. The conclusion of this research is that EOAT has been proven to improve the efficiency and safety of the production process. It is recommended that EOAT be implemented more widely in other production lines.

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