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Background: The global energy transition requires low-carbon solutions that can be integrated into existing thermal systems without drastic infrastructure changes. Hydrogen blending in conventional combustion systems has emerged as a promising pathway to reduce carbon emissions while maintaining operational flexibility. Objective: This study aims to experimentally evaluate the effect of hydrogen blending ratios (0–100% by volume) on thermal efficiency, CO₂ emissions, and NOx emissions, and to determine the optimal blending range based on technical and economic feasibility. Methods: An experimental thermal system prototype was developed and tested under controlled conditions with three repetitions per operating point. Performance parameters included combustion temperature, fuel consumption rate, and thermal efficiency, while emissions of CO₂ and NOx were measured using a calibrated gas analyzer. Data were analyzed using descriptive statistics, one-way ANOVA at a 0.05 significance level, confidence interval estimation, and linear regression to examine the relationship between hydrogen fraction and emission reduction. Results: The findings indicate that increasing hydrogen fraction significantly improves thermal efficiency, reaching 87.5% at 100% hydrogen, while CO₂ emissions decrease linearly to zero. However, NOx emissions increase with higher hydrogen content due to elevated combustion temperatures. Statistical analysis confirms that hydrogen ratio has a significant effect on efficiency and emissions, with a strong linear correlation between hydrogen fraction and CO₂ reduction. A blending range of 40–60% hydrogen provides the most balanced performance in terms of efficiency improvement, emission reduction, and cost feasibility.

This research applies the Lean UX approach in redesigning the Mitra Mapan Mulia website with the purpose of enhancing user experience. The Lean UX method is used as a responsive and efficient approach to designing solutions that are more user-focused. Data was collect using interview, literature study and observation methods. The research subjects were state-owned companies and MSMEs. The results showed that there was an improvement in user experience, with performance parameters including navigation time, information clarity, and engagement level. Evaluation results from users involved in prototype testing showed a positive response to design changes, and the use of Lean UX methods provided advantages in accelerating the design process and increasing user satisfaction. This research contributes to the practical understanding and effectiveness of Lean UX in the context of website redesign to achieve the goal of improving user experience

Successful packaging design is not only a determinant of a product's success in the market, especially in the beauty industry such as hand cream. The role of aesthetically pleasing and functional packaging design is crucial in influencing consumer purchasing decisions. Therefore, a marketing strategy focused on packaging design becomes key to enhancing product appeal and sales. The strategic use of mockups in the design phase allows designers to test and evaluate concepts digitally without the need for physical prototypes. The advantage of mockups lies in their ability to provide a realistic preview, expediting the design and development process. The aspects of packaging design are critical in creating a visually compelling and convincing experience for consumers. This research, employing a descriptive approach and qualitative methods, aims to explore the appropriate approach in designing hand cream packaging. The hope is that this research serves as a significant initial step in the development of hand cream packaging design, ensuring the product not only meets aesthetic standards but also competes effectively in a competitive market.

Jamalsari Village has rich local potentials, including natural tourism, agriculture, and traditional culture. Unfortunately, these potentials have not been optimally managed, and as a result, they have not significantly contributed to the community’s welfare. In response to this issue, a community service program was conducted with the goal of empowering the residents in developing tourism and creative economies based on local potentials. The approach used was participatory, where the community was actively involved in every stage of the activity, from identifying potentials and problems to training, mentoring, and evaluating the outcomes. Key activities in this program included training local tour guides to enhance residents' capacity in welcoming tourists, homestay management training as a form of community-based accommodation, and training on processing local products such as cassava chips and opak (crispy rice cakes). In addition, the community was encouraged to utilize social media as a promotional tool for products and tourist destinations. The results of these activities showed an increase in the community’s capacity and awareness in managing the village’s potential. The establishment of the Tourism Awareness Group (Pokdarwis) became one of the success indicators, where this group actively managed tourism activities independently. Furthermore, several prototypes of creative economy products have been successfully produced and widely recognized through digital promotion. This program successfully encouraged active participation from the community in promoting and managing the village as a local wisdom-based tourist destination. The success of this initiative shows that community empowerment oriented towards local potential can be an effective and sustainable approach, with the potential to serve as a replicable model for other villages with similar characteristics. Additionally, with this program, the community began to have a better understanding of the importance of environmental sustainability and cultural preservation in tourism development. This program also opened new opportunities for improving the residents’ economy, creating jobs, and reducing dependence on less sustainable economic sectors.

A conveyor is a tool with a large rubber band arranged transversely between two pulleys at a constant speed as a transporter of solid material in this case coal with the provisions of the permitted amount. Damage to the conveyor tool has a major impact on the smooth running of a coal loading and unloading process, so a coal monitoring tool was designed using an ESP32 microcontroller-based data logger. The purpose of this study is to find out how to design a coal load monitoring tool based on a data logger using the Research and Development (R&D) method type ADDIE. Using the following types of testing: static and dynamic. The research results show that the load monitoring system based on a load cell and ESP32 microcontroller demonstrates high accuracy, with a reading deviation of less than 2% from the actual weight. The system is also considered effective, as it can detect loads, adjust the hatch door angle, and transmit data to Google Spreadsheet in real-time without disruptions. Its ability to adapt to varying loads indicates that the prototype operates stably, responsively, and in accordance with the design objectives.

This study aims to design a smart home system leveraging the Internet of Things (IoT) concept by utilizing the Wemos D1 microcontroller combined with fuzzy logic to improve home energy management and safety. The hardware development process involves integrating a PIR sensor for motion detection, a DHT11 sensor for measuring temperature and humidity, and actuators including relays for lighting and a solenoid lock for doors. The system is operated remotely using the Blynk platform and supports notification alerts through Telegram. Testing results confirm that the prototype is capable of controlling devices, tracking environmental data in real time, and effectively sending alerts when movement is detected. Overall, the system presents a practical, responsive, and user-friendly smart home solution that enhances user convenience and household security.

The Student Activity Unit (UKM) for Futsal at Multi Data Palembang University often experiences obstacles in tournament management, such as delays in match information updates, difficulty accessing information by participants, data recording errors, and inefficient time for compiling match brackets. This research aims to design a mobile-based futsal tournament management application called TeamKickOff using the Design Thinking method through five stages: empathize, define, ideate, prototype, and test. In the empathize stage, in-depth interviews were conducted with 12 respondents, participatory observation, and document analysis. The define stage produced an empathy map, user persona, point of view, and user journey map. The ideate stage involved brainstorming, card sorting, and wireframe development. Prototypes were developed in three versions (low, mid, and high-fidelity) with features for schedule management, real-time score recording, automatic match brackets, and video documentation. Usability testing with 32 respondents resulted in a SUS score of 78.6 with a task completion rate of 91.3% and a reduction in management time of up to 65% compared to manual methods. The research results show that the TeamKickOff application successfully improved the efficiency of futsal tournament organization and information access for participants, with advantages in video documentation integration and focus on the local campus context in Indonesia.

In line with the development of the digital potential of the creative economy, the demand for quality visual content from photography and videography industry players has also increased. However, access to quality photographers and videographers is still a problem for some people. Likewise, photographers and videographers also experience difficulties in getting clients. Photographers and videographers feel that the use of social media has not been maximized in helping them get clients. In addition to these problems, these photographers and videographers also have difficulty in disseminating the events held. To overcome this problem, researchers developed a digital platform that can accommodate the interests of photography and videography service providers, as well as the community of users of these services. The digital platform developed by researchers is named the “Lensa Buana” marketplace application. The development of the Lensa Buana marketplace application uses the prototype system development method. With this application, it is hoped that photography and videography service providers can reach more consumers, while the community as consumers can easily get photography and videography services according to their needs and desired quality.

Worldwide trade is conducted 80% through maritime routes, including the export and import of coal. Coal is a non-renewable energy source, often used as fuel for power plants. As technology advances, detecting metal contaminants in coal cargo becomes crucial to prevent contamination of coal with metal materials. This study aims to (1) understand the operation of a conveyor in transporting coal, and (2) assess how the Proximity inductive sensor detects metal presence. The methods used in this research include real data analysis and literature review, conducted aboard the ship. The researcher designed and developed a prototype system for this purpose. The Proximity inductive sensor is utilized to detect metal contaminants, such as aluminum, iron, and stainless steel, among the coal cargo. The research was carried out during sea practice (prola) aboard the WHS ISKANDAR 1. The findings indicate that the conveyor is driven by a DC motor, and the Proximity inductive sensor effectively detects metals to separate them from the coal cargo, thus purifying the coal from metal contaminants.

This study aims to design and build a hydraulic system capable of operating hatch opening and closing automatically and manually, with the application of Internet of Things (IoT) technology to monitor and control the system remotely. This system is designed to improve efficiency and ease of hatch operation on ships or other industrial applications, as well as prevent fires in cargo due to several factors such as unintentional negligence of the ship's crew and also weather factors with increasing temperatures. Where the automatic system uses a rain sensor to optimize time and energy, while manual control remains available as a backup option. This design involves the integration of hydraulic actuators, rain drop sensors, microcontrollers, and IoT communication modules that allow users to control and monitor the position of the hatch through a web-based application or mobile device. In compiling this scientific paper, researchers use experimental methods. This study shows the results that testing will be carried out directly by researchers, by testing the performance of the prototype of the automatic and manual hatch opening and closing hydraulic system design tool based on IoT by testing the effectiveness of the control system and sensor performance. In conclusion, this system successfully combines hydraulic and IoT technology to create an efficient, safe, and easy-to-use solution in practical applications.

Introduction: The integration of Digital Twin (DT) technology and the Internet of Things (IoT) into Building Energy Management Systems (BEMS) offers a transformative approach to optimizing energy consumption in buildings. This study explores the development of a Digital Twin based BEMS prototype, which leverages real time data collection, predictive analytics, and machine learning to enhance energy efficiency, reduce costs, and support sustainability goals in modern buildings. The research also addresses key gaps in current energy management systems, including real time adaptive control and integration with smart grid platforms. Literature Review: Previous research highlights the limitations of traditional BEMS, which often rely on static control strategies and lack real time adaptability. Recent advancements, including predictive maintenance and machine learning integration, have improved energy optimization. However, challenges such as data interoperability, scalability, and cybersecurity remain. This review consolidates current approaches and identifies opportunities for enhancing BEMS through the integration of DT technology, IoT, and machine learning. Materials and Method: The methodology employed involves the design of a Digital Twin based BEMS prototype, incorporating IoT sensors for real time data collection on variables such as HVAC load, occupancy, and environmental factors. The system uses time series forecasting and adaptive control strategies to optimize energy consumption. A case study building is used for validation, with performance metrics such as energy savings, CO₂ footprint reduction, and peak load reduction assessed to evaluate the system's effectiveness. Results and Discussion: The results demonstrate a significant reduction in energy consumption (up to 50%) compared to traditional BEMS, along with improved forecasting accuracy and sustainability performance. The prototype achieved a high R² score in predicting energy usage, validated through real world application in the case study building. The economic feasibility analysis showed substantial cost savings and a strong return on investment, making the system a financially viable solution for energy efficient building management.

Wireless communication, in its infrastructure nature, faces many challenges such as fading, data coverage, and interference issues. Therefore, High-Fidelity or (Li-Fi) is utilized due to its ability to naturally provide high-density wireless data coverage in closure’s particularly helpful for application(s) in some areas while the radio interference conditions are concern. This article illustrates an advanced Li-Fi approach performing high-speed data transmission between two Personal Computers (PCs) utilizing the Arduino Nano-based technique. In the experimental phase, data is mainly used to be transmitted over red laser diode (630 nm) through (30 cm) in distance, a distance of 30 cm, achieving a high peak speed reach to about (512Bps). The proposed approach performance is computed by evaluating the most important and related metrics like Signal-to-Noise Ratio (SNR), Bit-Error-Rate (BER), and influence of throughput on input data over various light circumstance. The proposed approach mainly utilizes a keypad as a user input and two related detection models for both a solar cell and a photodetector in order to make a powerful comparison in terms of performance. the results showed that when the photodetector applies a higher-detection efficiency (via BER enhancement which reaches to 20% over solar-cell), the solar-cell clarify outstanding power and cost-activity. The mentioned findings are propped by elaborated statistical-analyses and MATLAB simulation to design, simulate and visualize the validate functionalities of the robustness and scalability properties of the proposed Li-Fi approach.

Technological advancements and digital transformation have significantly impacted business management, including the consulting sector. PQM Consultants faces challenges in managing inquiries, which are still manually handled using Microsoft Excel. This manual process results in fragmented data, delays in accessing information, input errors, and difficulties in real-time monitoring of inquiry statuses. These issues affect operational efficiency, data transparency, and timely decision-making.   This research focuses on developing a web-based inquiry management platform through the Design Thinking methodology, aiming to improve the efficiency and effectiveness of inquiry handling at PQM Consultants. Adopting a qualitative case study approach, the study gathers insights through in-depth interviews, direct observations, and document reviews involving consultants and support team members who are directly engaged in the inquiry process. Research participants consist of consultants and support team members directly involved in inquiry management. The study uses a Design Thinking approach, which focuses on solving problems through repeated refinement and actively involving users throughout the development process. This framework supports the development of creative solutions by deeply understanding user needs, defining key challenges, and continuously refining ideas through prototyping and testing (Costich 2021). The Empathize stage focuses on understanding user needs and challenges. The Define stage formulates the core problems specifically. The Ideate stage generates creative ideas as potential solutions. The Prototype stage develops an initial design of the platform, which is then tested during the Test stage to gather feedback for further refinement. The results indicate that the web-based inquiry management platform effectively addresses various challenges in managing inquiry data, such as access delays, input errors, and data fragmentation. The platform enables consultants to monitor inquiry statuses in real-time, access data transparently, and make faster and more accurate decisions.

Indonesia is predicted to have the threat of demographic bonus while also having the opportunity to take advantage of this threat through the Prakerja program. Since 2020 the Prakerja program has been running and there are still many numerical achievements that need to be realized to avoid the threat of demographic bonus and in line with the vision of Indonesia emas 2025. PT Generasi Anak Muda Berkarya with HiColleagues brand is a startup moving in the field of Education Technology and IT Service in sustainable digital transformation that is committed to realizing the vision of Indonesia emas 2045 through implementation of the Prakerja program. Learning Management System (LMS) platform according to the Prakerja standard is a mandatory requirement that the training institution must have to become the Prakerja partner. This research aims to produce the Learning Management System (LMS) prototype design according to the Prakerja standard, giving a good experience to participants in completing a series of training class mechanisms, support the participant graduation ratio, and increase brand positioning of HiColleagues as the Prakerja partner. Designing a Learning Management System (LMS) prototype applies the Design Thinking method through the 5 phases, namely Empathize, Define, Ideate, Prototype, & Test. As well as using Figma as a design tool and Maze as a Usability Testing. This Learning Management System (LMS) prototype design succeeded in getting good feedback from users with 100% succession rate although there are minor improvisations on the user interface as a form of alignment. 

UMKM or the abbreviation of Micro, Small and Medium Enterprises is a business unit that is currently starting to be widely developed in the community as a major part of the economic program in Indonesia. Currently, the financial recording process on the part of UMKM is still not in accordance with the established standards. The problems faced are the difficulty in recording finances and the lack of knowledge in making financial reports. UMKM transaction data is still recorded manually or by hand, in addition, UMKM often experiences loss of transaction data. In an effort to improve the efficiency and standards of UMKM financial reports, an application is needed that can help UMKM in recording finances and making financial reports. This application aims to facilitate UMKM financial recording. The prototype method is used in designing the application, the use of this method facilitates iteration and initial testing involving input or feedback from users directly. The black box testing method is used to ensure that the functionality of the UMKM accounting application runs well. This study produces an Accounting Application that can facilitate UMKM in recording finances and making reports in accordance with the Financial Accounting Standards for Micro, Small and Medium Entities (SAK EMKM).  

Pollution of hydrocarbons in marine waters was recorded up to 2003 around 6.44 million tons and dominant due to the results of fishery port activities to cause the balance of coastal ecosystems disrupted. The drained state funds for its handling can reach 1000 USD per ton up to 33,000 USD in each region. Various efforts have been made is still not effective enough. The purpose of this program is to get the appropriate technology design in overcoming the problem of hydrocarbon pollution in the fishing port. The method used by literature and field study and a series of testing tools. The solution is called MABOA (Magic Briquette Oil Absorbent) is a technology that is applied aplikatif appropriate to overcome the problem of oil pollution in the port area. This tool is a net with the main components of magic briquettes, auto-spray containing bacteria degradation and microcontroller which as a whole has the ability to absorb and degrade hydrocarbon compounds. The circular MABOA net will prevent the expansion of the oil spill zone by the absorption process by magic briquettes. Pseudomonas puttidae and Bacillus sp. In auto-spray will be automatically sprayed over the surface of the spill zone to perform the decomposition of hydrocarbon compounds. Bacteria will grow and utilize hydrocarbons that have been absorbed and accumulated in the body of magic briquettes so that the cleaning process becomes more effective and faster. Results from a series of trials showed that MABOA with 3meter diameter dimension able to absorb hydrocarbon compound as much as 35.000mL with 3-5min time absorption rate and with density of colonies of bacteria 3,5x109 able to degrade 32% of existing hydrocarbon compound with efficiency time 3-7 days. The data is an accumulation of those component test result data.

This study aims to design and develop a prototype of an Internet of Things (IoT)-based land watering monitoring system using the ESP8266 module and soil moisture sensor. This system is designed to help farmers manage watering automatically based on soil moisture conditions, so that they can save water and labor. The process at this time begins with a literature study, hardware and software design, to prototype testing on two soil conditions, namely dry and wet. Data from the sensor is sent in real-time to the IoT platform, if the soil is detected dry, the system automatically activates the water pump. The results of the test show that the sensor works accurately in distinguishing soil conditions, and the system is able to water automatically according to needs. Furthermore, this system can also be monitored and controlled remotely via the internet. The conclusion of this study shows that the use of IoT technology is very potential to increase efficiency and effectiveness in agricultural land management.

The competitiveness of Micro, Small, and Medium Enterprises (MSMEs) in Indonesia often faces obstacles due to limited product packaging that fails to adequately reflect product quality, uniqueness, and brand identity. Packaging is not merely a protective container but also a strategic communication tool that influences consumer perceptions, shapes brand image, and supports market expansion. This community service program was carried out at the Banana Chips MSME “Bu Tini” in Semarang, which previously relied on simple plastic packaging without graphic design, brand logo, or product information. The main objective of this program was to assist the MSME in developing both the design and functional aspects of packaging as a strategic effort to strengthen branding, enhance product value, and improve competitiveness. The methodology applied was community-based and participatory, consisting of field observation, focus group discussions, collaborative design with the business owner, and prototype testing of new packaging. The results demonstrate that the redesigned packaging highlights a stronger visual identity through logos, colors, and slogans, while also ensuring practicality, durability, and compliance with food safety standards. Furthermore, the new packaging improved information clarity regarding composition, expiration date, and producer details, which significantly increased consumer trust in hygiene and quality. From a broader perspective, the activity fostered social transformation by raising awareness among the owner and workers about the importance of branding and professional packaging, developing new skills, and positioning the MSME as a role model for similar businesses in the community. This program implies that packaging development is not solely a visual improvement but a strategic branding instrument that can support MSMEs in achieving sustainability and greater competitiveness in local, regional, and potentially digital markets.

Automatic Identification System (AIS) is a communication technology that plays an important role in improving operational safety and efficiency in the shipping industry. AIS allows ships to exchange real-time data on identity, position, speed, and direction, which helps prevent collisions and facilitates maritime traffic management by port authorities. In addition, AIS functions in search and rescue operations by providing accurate information on the location of ships in trouble. In terms of security, AIS allows monitoring of suspicious ships, thus helping in preventing illegal activities in the waters. This study aims to design and develop a prototype AIS receiver based on LoRa, Arduino, and LCD HMI. The LoRa module was chosen because of its ability to transmit data over long distances with low power consumption, which is suitable for the maritime environment. Arduino is used as the main microcontroller to control the system, while the LCD HMI serves as the display interface for the received data. After the hardware and software design was completed, the system was tested through functional testing and performance measurements using a spectrum analyzer to evaluate the strength of the LoRa signal at various distances. The test results show that the AIS receiver is able to receive data well up to 15 meters on land and 13 meters at sea, with a delay of 100 milliseconds. System performance degrades at longer distances due to environmental interference and signal attenuation. These findings provide insight into the effective limits of LoRa communication in maritime applications and can be used as a reference for frequency testing and optimization of LoRa-based long-range communication systems.

Reason: The organization's ability to adopt new, innovative behaviors is being restricted by the new, competitive environment that progress and gradual change have created. In light of overall execution factors, SMEs must implement the following digital transformations. SMEs have certain characteristics that set them apart from large corporations. Moreover, having a prototype that is authorized to recognize, impact, and expand its computerized capabilities will help SMEs grow towards more sophisticated development. Idea/procedure/approach: A top to bottom audit of the current writing on advanced Change and hierarchical productivity accomplished inside Scopus and Web of Science to recognize other computerized difficulties confronting PME and the advanced abilities that they truly do vent developer pour y foreface.  We utilized semi-organized apparatuses to safeguard supplements and work with the investigation of metadata specialists. Results: Because Regarding this review, We've got fostered a sophisticated hierarchical skill simulation for proficiency organized that empowers SMEs to distinguish and foster the computerized capacities expected to progress organized change, refined with bits of knowledge from six counseled specialists. We have noticed the significance of authoritative learning and hierarchical information to propel the computerized change of small and medium-sized. Competent modernity /esteem: known as created designs is valuable regarding small and medium-sized administrators in understand what the beginning circumstance is, explain appear computerized holes were, along with have the option by design activities to foster the advanced abilities important to move in the direction of digital maturity coordinated.